drivers/net/niu.c

   1 /* niu.c: Neptune ethernet driver.
   2  *
   3  * Copyright (C) 2007, 2008 David S. Miller (davem@davemloft.net)
   4  */
   5
   6 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
   7
   8 #include <linux/module.h>
   9 #include <linux/init.h>
  10 #include <linux/pci.h>
  11 #include <linux/dma-mapping.h>
  12 #include <linux/netdevice.h>
  13 #include <linux/ethtool.h>
  14 #include <linux/etherdevice.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/delay.h>
  17 #include <linux/bitops.h>
  18 #include <linux/mii.h>
  19 #include <linux/if_ether.h>
  20 #include <linux/if_vlan.h>
  21 #include <linux/ip.h>
  22 #include <linux/in.h>
  23 #include <linux/ipv6.h>
  24 #include <linux/log2.h>
  25 #include <linux/jiffies.h>
  26 #include <linux/crc32.h>
  27 #include <linux/list.h>
  28 #include <linux/slab.h>
  29
  30 #include <linux/io.h>
  31 #include <linux/of_device.h>
  32
  33 #include "niu.h"
  34
  35 #define DRV_MODULE_NAME         "niu"
  36 #define DRV_MODULE_VERSION      "1.1"
  37 #define DRV_MODULE_RELDATE      "Apr 22, 2010"
  38
  39 static char version[] __devinitdata =
  40         DRV_MODULE_NAME ".c:v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n";
  41
  42 MODULE_AUTHOR("David S. Miller (davem@davemloft.net)");
  43 MODULE_DESCRIPTION("NIU ethernet driver");
  44 MODULE_LICENSE("GPL");
  45 MODULE_VERSION(DRV_MODULE_VERSION);
  46
  47 #ifndef readq
  48 static u64 readq(void __iomem *reg)
  49 {
  50         return ((u64) readl(reg)) | (((u64) readl(reg + 4UL)) << 32);
  51 }
  52
  53 static void writeq(u64 val, void __iomem *reg)
  54 {
  55         writel(val & 0xffffffff, reg);
  56         writel(val >> 32, reg + 0x4UL);
  57 }
  58 #endif
  59
  60 static DEFINE_PCI_DEVICE_TABLE(niu_pci_tbl) = {
  61         {PCI_DEVICE(PCI_VENDOR_ID_SUN, 0xabcd)},
  62         {}
  63 };
  64
  65 MODULE_DEVICE_TABLE(pci, niu_pci_tbl);
  66
  67 #define NIU_TX_TIMEOUT                  (5 * HZ)
  68
  69 #define nr64(reg)               readq(np->regs + (reg))
  70 #define nw64(reg, val)          writeq((val), np->regs + (reg))
  71
  72 #define nr64_mac(reg)           readq(np->mac_regs + (reg))
  73 #define nw64_mac(reg, val)      writeq((val), np->mac_regs + (reg))
  74
  75 #define nr64_ipp(reg)           readq(np->regs + np->ipp_off + (reg))
  76 #define nw64_ipp(reg, val)      writeq((val), np->regs + np->ipp_off + (reg))
  77
  78 #define nr64_pcs(reg)           readq(np->regs + np->pcs_off + (reg))
  79 #define nw64_pcs(reg, val)      writeq((val), np->regs + np->pcs_off + (reg))
  80
  81 #define nr64_xpcs(reg)          readq(np->regs + np->xpcs_off + (reg))
  82 #define nw64_xpcs(reg, val)     writeq((val), np->regs + np->xpcs_off + (reg))
  83
  84 #define NIU_MSG_DEFAULT (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
  85
  86 static int niu_debug;
  87 static int debug = -1;
  88 module_param(debug, int, 0);
  89 MODULE_PARM_DESC(debug, "NIU debug level");
  90
  91 #define niu_lock_parent(np, flags) \
  92         spin_lock_irqsave(&np->parent->lock, flags)
  93 #define niu_unlock_parent(np, flags) \
  94         spin_unlock_irqrestore(&np->parent->lock, flags)
  95
  96 static int serdes_init_10g_serdes(struct niu *np);
  97
  98 static int __niu_wait_bits_clear_mac(struct niu *np, unsigned long reg,
  99                                      u64 bits, int limit, int delay)
 100 {
 101         while (--limit >= 0) {
 102                 u64 val = nr64_mac(reg);
 103
 104                 if (!(val & bits))
 105                         break;
 106                 udelay(delay);
 107         }
 108         if (limit < 0)
 109                 return -ENODEV;
 110         return 0;
 111 }
 112
 113 static int __niu_set_and_wait_clear_mac(struct niu *np, unsigned long reg,
 114                                         u64 bits, int limit, int delay,
 115                                         const char *reg_name)
 116 {
 117         int err;
 118
 119         nw64_mac(reg, bits);
 120         err = __niu_wait_bits_clear_mac(np, reg, bits, limit, delay);
 121         if (err)
 122                 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
 123                            (unsigned long long)bits, reg_name,
 124                            (unsigned long long)nr64_mac(reg));
 125         return err;
 126 }
 127
 128 #define niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 129 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 130         __niu_set_and_wait_clear_mac(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 131 })
 132
 133 static int __niu_wait_bits_clear_ipp(struct niu *np, unsigned long reg,
 134                                      u64 bits, int limit, int delay)
 135 {
 136         while (--limit >= 0) {
 137                 u64 val = nr64_ipp(reg);
 138
 139                 if (!(val & bits))
 140                         break;
 141                 udelay(delay);
 142         }
 143         if (limit < 0)
 144                 return -ENODEV;
 145         return 0;
 146 }
 147
 148 static int __niu_set_and_wait_clear_ipp(struct niu *np, unsigned long reg,
 149                                         u64 bits, int limit, int delay,
 150                                         const char *reg_name)
 151 {
 152         int err;
 153         u64 val;
 154
 155         val = nr64_ipp(reg);
 156         val |= bits;
 157         nw64_ipp(reg, val);
 158
 159         err = __niu_wait_bits_clear_ipp(np, reg, bits, limit, delay);
 160         if (err)
 161                 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
 162                            (unsigned long long)bits, reg_name,
 163                            (unsigned long long)nr64_ipp(reg));
 164         return err;
 165 }
 166
 167 #define niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 168 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 169         __niu_set_and_wait_clear_ipp(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 170 })
 171
 172 static int __niu_wait_bits_clear(struct niu *np, unsigned long reg,
 173                                  u64 bits, int limit, int delay)
 174 {
 175         while (--limit >= 0) {
 176                 u64 val = nr64(reg);
 177
 178                 if (!(val & bits))
 179                         break;
 180                 udelay(delay);
 181         }
 182         if (limit < 0)
 183                 return -ENODEV;
 184         return 0;
 185 }
 186
 187 #define niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY) \
 188 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 189         __niu_wait_bits_clear(NP, REG, BITS, LIMIT, DELAY); \
 190 })
 191
 192 static int __niu_set_and_wait_clear(struct niu *np, unsigned long reg,
 193                                     u64 bits, int limit, int delay,
 194                                     const char *reg_name)
 195 {
 196         int err;
 197
 198         nw64(reg, bits);
 199         err = __niu_wait_bits_clear(np, reg, bits, limit, delay);
 200         if (err)
 201                 netdev_err(np->dev, "bits (%llx) of register %s would not clear, val[%llx]\n",
 202                            (unsigned long long)bits, reg_name,
 203                            (unsigned long long)nr64(reg));
 204         return err;
 205 }
 206
 207 #define niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME) \
 208 ({      BUILD_BUG_ON(LIMIT <= 0 || DELAY < 0); \
 209         __niu_set_and_wait_clear(NP, REG, BITS, LIMIT, DELAY, REG_NAME); \
 210 })
 211
 212 static void niu_ldg_rearm(struct niu *np, struct niu_ldg *lp, int on)
 213 {
 214         u64 val = (u64) lp->timer;
 215
 216         if (on)
 217                 val |= LDG_IMGMT_ARM;
 218
 219         nw64(LDG_IMGMT(lp->ldg_num), val);
 220 }
 221
 222 static int niu_ldn_irq_enable(struct niu *np, int ldn, int on)
 223 {
 224         unsigned long mask_reg, bits;
 225         u64 val;
 226
 227         if (ldn < 0 || ldn > LDN_MAX)
 228                 return -EINVAL;
 229
 230         if (ldn < 64) {
 231                 mask_reg = LD_IM0(ldn);
 232                 bits = LD_IM0_MASK;
 233         } else {
 234                 mask_reg = LD_IM1(ldn - 64);
 235                 bits = LD_IM1_MASK;
 236         }
 237
 238         val = nr64(mask_reg);
 239         if (on)
 240                 val &= ~bits;
 241         else
 242                 val |= bits;
 243         nw64(mask_reg, val);
 244
 245         return 0;
 246 }
 247
 248 static int niu_enable_ldn_in_ldg(struct niu *np, struct niu_ldg *lp, int on)
 249 {
 250         struct niu_parent *parent = np->parent;
 251         int i;
 252
 253         for (i = 0; i <= LDN_MAX; i++) {
 254                 int err;
 255
 256                 if (parent->ldg_map[i] != lp->ldg_num)
 257                         continue;
 258
 259                 err = niu_ldn_irq_enable(np, i, on);
 260                 if (err)
 261                         return err;
 262         }
 263         return 0;
 264 }
 265
 266 static int niu_enable_interrupts(struct niu *np, int on)
 267 {
 268         int i;
 269
 270         for (i = 0; i < np->num_ldg; i++) {
 271                 struct niu_ldg *lp = &np->ldg[i];
 272                 int err;
 273
 274                 err = niu_enable_ldn_in_ldg(np, lp, on);
 275                 if (err)
 276                         return err;
 277         }
 278         for (i = 0; i < np->num_ldg; i++)
 279                 niu_ldg_rearm(np, &np->ldg[i], on);
 280
 281         return 0;
 282 }
 283
 284 static u32 phy_encode(u32 type, int port)
 285 {
 286         return type << (port * 2);
 287 }
 288
 289 static u32 phy_decode(u32 val, int port)
 290 {
 291         return (val >> (port * 2)) & PORT_TYPE_MASK;
 292 }
 293
 294 static int mdio_wait(struct niu *np)
 295 {
 296         int limit = 1000;
 297         u64 val;
 298
 299         while (--limit > 0) {
 300                 val = nr64(MIF_FRAME_OUTPUT);
 301                 if ((val >> MIF_FRAME_OUTPUT_TA_SHIFT) & 0x1)
 302                         return val & MIF_FRAME_OUTPUT_DATA;
 303
 304                 udelay(10);
 305         }
 306
 307         return -ENODEV;
 308 }
 309
 310 static int mdio_read(struct niu *np, int port, int dev, int reg)
 311 {
 312         int err;
 313
 314         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
 315         err = mdio_wait(np);
 316         if (err < 0)
 317                 return err;
 318
 319         nw64(MIF_FRAME_OUTPUT, MDIO_READ_OP(port, dev));
 320         return mdio_wait(np);
 321 }
 322
 323 static int mdio_write(struct niu *np, int port, int dev, int reg, int data)
 324 {
 325         int err;
 326
 327         nw64(MIF_FRAME_OUTPUT, MDIO_ADDR_OP(port, dev, reg));
 328         err = mdio_wait(np);
 329         if (err < 0)
 330                 return err;
 331
 332         nw64(MIF_FRAME_OUTPUT, MDIO_WRITE_OP(port, dev, data));
 333         err = mdio_wait(np);
 334         if (err < 0)
 335                 return err;
 336
 337         return 0;
 338 }
 339
 340 static int mii_read(struct niu *np, int port, int reg)
 341 {
 342         nw64(MIF_FRAME_OUTPUT, MII_READ_OP(port, reg));
 343         return mdio_wait(np);
 344 }
 345
 346 static int mii_write(struct niu *np, int port, int reg, int data)
 347 {
 348         int err;
 349
 350         nw64(MIF_FRAME_OUTPUT, MII_WRITE_OP(port, reg, data));
 351         err = mdio_wait(np);
 352         if (err < 0)
 353                 return err;
 354
 355         return 0;
 356 }
 357
 358 static int esr2_set_tx_cfg(struct niu *np, unsigned long channel, u32 val)
 359 {
 360         int err;
 361
 362         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 363                          ESR2_TI_PLL_TX_CFG_L(channel),
 364                          val & 0xffff);
 365         if (!err)
 366                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 367                                  ESR2_TI_PLL_TX_CFG_H(channel),
 368                                  val >> 16);
 369         return err;
 370 }
 371
 372 static int esr2_set_rx_cfg(struct niu *np, unsigned long channel, u32 val)
 373 {
 374         int err;
 375
 376         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 377                          ESR2_TI_PLL_RX_CFG_L(channel),
 378                          val & 0xffff);
 379         if (!err)
 380                 err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 381                                  ESR2_TI_PLL_RX_CFG_H(channel),
 382                                  val >> 16);
 383         return err;
 384 }
 385
 386 /* Mode is always 10G fiber.  */
 387 static int serdes_init_niu_10g_fiber(struct niu *np)
 388 {
 389         struct niu_link_config *lp = &np->link_config;
 390         u32 tx_cfg, rx_cfg;
 391         unsigned long i;
 392
 393         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
 394         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 395                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 396                   PLL_RX_CFG_EQ_LP_ADAPTIVE);
 397
 398         if (lp->loopback_mode == LOOPBACK_PHY) {
 399                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 400
 401                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 402                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 403
 404                 tx_cfg |= PLL_TX_CFG_ENTEST;
 405                 rx_cfg |= PLL_RX_CFG_ENTEST;
 406         }
 407
 408         /* Initialize all 4 lanes of the SERDES.  */
 409         for (i = 0; i < 4; i++) {
 410                 int err = esr2_set_tx_cfg(np, i, tx_cfg);
 411                 if (err)
 412                         return err;
 413         }
 414
 415         for (i = 0; i < 4; i++) {
 416                 int err = esr2_set_rx_cfg(np, i, rx_cfg);
 417                 if (err)
 418                         return err;
 419         }
 420
 421         return 0;
 422 }
 423
 424 static int serdes_init_niu_1g_serdes(struct niu *np)
 425 {
 426         struct niu_link_config *lp = &np->link_config;
 427         u16 pll_cfg, pll_sts;
 428         int max_retry = 100;
 429         u64 uninitialized_var(sig), mask, val;
 430         u32 tx_cfg, rx_cfg;
 431         unsigned long i;
 432         int err;
 433
 434         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV |
 435                   PLL_TX_CFG_RATE_HALF);
 436         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 437                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 438                   PLL_RX_CFG_RATE_HALF);
 439
 440         if (np->port == 0)
 441                 rx_cfg |= PLL_RX_CFG_EQ_LP_ADAPTIVE;
 442
 443         if (lp->loopback_mode == LOOPBACK_PHY) {
 444                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 445
 446                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 447                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 448
 449                 tx_cfg |= PLL_TX_CFG_ENTEST;
 450                 rx_cfg |= PLL_RX_CFG_ENTEST;
 451         }
 452
 453         /* Initialize PLL for 1G */
 454         pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_8X);
 455
 456         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 457                          ESR2_TI_PLL_CFG_L, pll_cfg);
 458         if (err) {
 459                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
 460                            np->port, __func__);
 461                 return err;
 462         }
 463
 464         pll_sts = PLL_CFG_ENPLL;
 465
 466         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 467                          ESR2_TI_PLL_STS_L, pll_sts);
 468         if (err) {
 469                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
 470                            np->port, __func__);
 471                 return err;
 472         }
 473
 474         udelay(200);
 475
 476         /* Initialize all 4 lanes of the SERDES.  */
 477         for (i = 0; i < 4; i++) {
 478                 err = esr2_set_tx_cfg(np, i, tx_cfg);
 479                 if (err)
 480                         return err;
 481         }
 482
 483         for (i = 0; i < 4; i++) {
 484                 err = esr2_set_rx_cfg(np, i, rx_cfg);
 485                 if (err)
 486                         return err;
 487         }
 488
 489         switch (np->port) {
 490         case 0:
 491                 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
 492                 mask = val;
 493                 break;
 494
 495         case 1:
 496                 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
 497                 mask = val;
 498                 break;
 499
 500         default:
 501                 return -EINVAL;
 502         }
 503
 504         while (max_retry--) {
 505                 sig = nr64(ESR_INT_SIGNALS);
 506                 if ((sig & mask) == val)
 507                         break;
 508
 509                 mdelay(500);
 510         }
 511
 512         if ((sig & mask) != val) {
 513                 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
 514                            np->port, (int)(sig & mask), (int)val);
 515                 return -ENODEV;
 516         }
 517
 518         return 0;
 519 }
 520
 521 static int serdes_init_niu_10g_serdes(struct niu *np)
 522 {
 523         struct niu_link_config *lp = &np->link_config;
 524         u32 tx_cfg, rx_cfg, pll_cfg, pll_sts;
 525         int max_retry = 100;
 526         u64 uninitialized_var(sig), mask, val;
 527         unsigned long i;
 528         int err;
 529
 530         tx_cfg = (PLL_TX_CFG_ENTX | PLL_TX_CFG_SWING_1375MV);
 531         rx_cfg = (PLL_RX_CFG_ENRX | PLL_RX_CFG_TERM_0P8VDDT |
 532                   PLL_RX_CFG_ALIGN_ENA | PLL_RX_CFG_LOS_LTHRESH |
 533                   PLL_RX_CFG_EQ_LP_ADAPTIVE);
 534
 535         if (lp->loopback_mode == LOOPBACK_PHY) {
 536                 u16 test_cfg = PLL_TEST_CFG_LOOPBACK_CML_DIS;
 537
 538                 mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 539                            ESR2_TI_PLL_TEST_CFG_L, test_cfg);
 540
 541                 tx_cfg |= PLL_TX_CFG_ENTEST;
 542                 rx_cfg |= PLL_RX_CFG_ENTEST;
 543         }
 544
 545         /* Initialize PLL for 10G */
 546         pll_cfg = (PLL_CFG_ENPLL | PLL_CFG_MPY_10X);
 547
 548         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 549                          ESR2_TI_PLL_CFG_L, pll_cfg & 0xffff);
 550         if (err) {
 551                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_CFG_L failed\n",
 552                            np->port, __func__);
 553                 return err;
 554         }
 555
 556         pll_sts = PLL_CFG_ENPLL;
 557
 558         err = mdio_write(np, np->port, NIU_ESR2_DEV_ADDR,
 559                          ESR2_TI_PLL_STS_L, pll_sts & 0xffff);
 560         if (err) {
 561                 netdev_err(np->dev, "NIU Port %d %s() mdio write to ESR2_TI_PLL_STS_L failed\n",
 562                            np->port, __func__);
 563                 return err;
 564         }
 565
 566         udelay(200);
 567
 568         /* Initialize all 4 lanes of the SERDES.  */
 569         for (i = 0; i < 4; i++) {
 570                 err = esr2_set_tx_cfg(np, i, tx_cfg);
 571                 if (err)
 572                         return err;
 573         }
 574
 575         for (i = 0; i < 4; i++) {
 576                 err = esr2_set_rx_cfg(np, i, rx_cfg);
 577                 if (err)
 578                         return err;
 579         }
 580
 581         /* check if serdes is ready */
 582
 583         switch (np->port) {
 584         case 0:
 585                 mask = ESR_INT_SIGNALS_P0_BITS;
 586                 val = (ESR_INT_SRDY0_P0 |
 587                        ESR_INT_DET0_P0 |
 588                        ESR_INT_XSRDY_P0 |
 589                        ESR_INT_XDP_P0_CH3 |
 590                        ESR_INT_XDP_P0_CH2 |
 591                        ESR_INT_XDP_P0_CH1 |
 592                        ESR_INT_XDP_P0_CH0);
 593                 break;
 594
 595         case 1:
 596                 mask = ESR_INT_SIGNALS_P1_BITS;
 597                 val = (ESR_INT_SRDY0_P1 |
 598                        ESR_INT_DET0_P1 |
 599                        ESR_INT_XSRDY_P1 |
 600                        ESR_INT_XDP_P1_CH3 |
 601                        ESR_INT_XDP_P1_CH2 |
 602                        ESR_INT_XDP_P1_CH1 |
 603                        ESR_INT_XDP_P1_CH0);
 604                 break;
 605
 606         default:
 607                 return -EINVAL;
 608         }
 609
 610         while (max_retry--) {
 611                 sig = nr64(ESR_INT_SIGNALS);
 612                 if ((sig & mask) == val)
 613                         break;
 614
 615                 mdelay(500);
 616         }
 617
 618         if ((sig & mask) != val) {
 619                 pr_info("NIU Port %u signal bits [%08x] are not [%08x] for 10G...trying 1G\n",
 620                         np->port, (int)(sig & mask), (int)val);
 621
 622                 /* 10G failed, try initializing at 1G */
 623                 err = serdes_init_niu_1g_serdes(np);
 624                 if (!err) {
 625                         np->flags &= ~NIU_FLAGS_10G;
 626                         np->mac_xcvr = MAC_XCVR_PCS;
 627                 }  else {
 628                         netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
 629                                    np->port);
 630                         return -ENODEV;
 631                 }
 632         }
 633         return 0;
 634 }
 635
 636 static int esr_read_rxtx_ctrl(struct niu *np, unsigned long chan, u32 *val)
 637 {
 638         int err;
 639
 640         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR, ESR_RXTX_CTRL_L(chan));
 641         if (err >= 0) {
 642                 *val = (err & 0xffff);
 643                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 644                                 ESR_RXTX_CTRL_H(chan));
 645                 if (err >= 0)
 646                         *val |= ((err & 0xffff) << 16);
 647                 err = 0;
 648         }
 649         return err;
 650 }
 651
 652 static int esr_read_glue0(struct niu *np, unsigned long chan, u32 *val)
 653 {
 654         int err;
 655
 656         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 657                         ESR_GLUE_CTRL0_L(chan));
 658         if (err >= 0) {
 659                 *val = (err & 0xffff);
 660                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 661                                 ESR_GLUE_CTRL0_H(chan));
 662                 if (err >= 0) {
 663                         *val |= ((err & 0xffff) << 16);
 664                         err = 0;
 665                 }
 666         }
 667         return err;
 668 }
 669
 670 static int esr_read_reset(struct niu *np, u32 *val)
 671 {
 672         int err;
 673
 674         err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 675                         ESR_RXTX_RESET_CTRL_L);
 676         if (err >= 0) {
 677                 *val = (err & 0xffff);
 678                 err = mdio_read(np, np->port, NIU_ESR_DEV_ADDR,
 679                                 ESR_RXTX_RESET_CTRL_H);
 680                 if (err >= 0) {
 681                         *val |= ((err & 0xffff) << 16);
 682                         err = 0;
 683                 }
 684         }
 685         return err;
 686 }
 687
 688 static int esr_write_rxtx_ctrl(struct niu *np, unsigned long chan, u32 val)
 689 {
 690         int err;
 691
 692         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 693                          ESR_RXTX_CTRL_L(chan), val & 0xffff);
 694         if (!err)
 695                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 696                                  ESR_RXTX_CTRL_H(chan), (val >> 16));
 697         return err;
 698 }
 699
 700 static int esr_write_glue0(struct niu *np, unsigned long chan, u32 val)
 701 {
 702         int err;
 703
 704         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 705                         ESR_GLUE_CTRL0_L(chan), val & 0xffff);
 706         if (!err)
 707                 err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 708                                  ESR_GLUE_CTRL0_H(chan), (val >> 16));
 709         return err;
 710 }
 711
 712 static int esr_reset(struct niu *np)
 713 {
 714         u32 uninitialized_var(reset);
 715         int err;
 716
 717         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 718                          ESR_RXTX_RESET_CTRL_L, 0x0000);
 719         if (err)
 720                 return err;
 721         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 722                          ESR_RXTX_RESET_CTRL_H, 0xffff);
 723         if (err)
 724                 return err;
 725         udelay(200);
 726
 727         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 728                          ESR_RXTX_RESET_CTRL_L, 0xffff);
 729         if (err)
 730                 return err;
 731         udelay(200);
 732
 733         err = mdio_write(np, np->port, NIU_ESR_DEV_ADDR,
 734                          ESR_RXTX_RESET_CTRL_H, 0x0000);
 735         if (err)
 736                 return err;
 737         udelay(200);
 738
 739         err = esr_read_reset(np, &reset);
 740         if (err)
 741                 return err;
 742         if (reset != 0) {
 743                 netdev_err(np->dev, "Port %u ESR_RESET did not clear [%08x]\n",
 744                            np->port, reset);
 745                 return -ENODEV;
 746         }
 747
 748         return 0;
 749 }
 750
 751 static int serdes_init_10g(struct niu *np)
 752 {
 753         struct niu_link_config *lp = &np->link_config;
 754         unsigned long ctrl_reg, test_cfg_reg, i;
 755         u64 ctrl_val, test_cfg_val, sig, mask, val;
 756         int err;
 757
 758         switch (np->port) {
 759         case 0:
 760                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
 761                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
 762                 break;
 763         case 1:
 764                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
 765                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
 766                 break;
 767
 768         default:
 769                 return -EINVAL;
 770         }
 771         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
 772                     ENET_SERDES_CTRL_SDET_1 |
 773                     ENET_SERDES_CTRL_SDET_2 |
 774                     ENET_SERDES_CTRL_SDET_3 |
 775                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
 776                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
 777                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
 778                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
 779                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
 780                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
 781                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
 782                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
 783         test_cfg_val = 0;
 784
 785         if (lp->loopback_mode == LOOPBACK_PHY) {
 786                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
 787                                   ENET_SERDES_TEST_MD_0_SHIFT) |
 788                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 789                                   ENET_SERDES_TEST_MD_1_SHIFT) |
 790                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 791                                   ENET_SERDES_TEST_MD_2_SHIFT) |
 792                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 793                                   ENET_SERDES_TEST_MD_3_SHIFT));
 794         }
 795
 796         nw64(ctrl_reg, ctrl_val);
 797         nw64(test_cfg_reg, test_cfg_val);
 798
 799         /* Initialize all 4 lanes of the SERDES.  */
 800         for (i = 0; i < 4; i++) {
 801                 u32 rxtx_ctrl, glue0;
 802
 803                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
 804                 if (err)
 805                         return err;
 806                 err = esr_read_glue0(np, i, &glue0);
 807                 if (err)
 808                         return err;
 809
 810                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
 811                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
 812                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
 813
 814                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
 815                            ESR_GLUE_CTRL0_THCNT |
 816                            ESR_GLUE_CTRL0_BLTIME);
 817                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
 818                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
 819                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
 820                           (BLTIME_300_CYCLES <<
 821                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
 822
 823                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
 824                 if (err)
 825                         return err;
 826                 err = esr_write_glue0(np, i, glue0);
 827                 if (err)
 828                         return err;
 829         }
 830
 831         err = esr_reset(np);
 832         if (err)
 833                 return err;
 834
 835         sig = nr64(ESR_INT_SIGNALS);
 836         switch (np->port) {
 837         case 0:
 838                 mask = ESR_INT_SIGNALS_P0_BITS;
 839                 val = (ESR_INT_SRDY0_P0 |
 840                        ESR_INT_DET0_P0 |
 841                        ESR_INT_XSRDY_P0 |
 842                        ESR_INT_XDP_P0_CH3 |
 843                        ESR_INT_XDP_P0_CH2 |
 844                        ESR_INT_XDP_P0_CH1 |
 845                        ESR_INT_XDP_P0_CH0);
 846                 break;
 847
 848         case 1:
 849                 mask = ESR_INT_SIGNALS_P1_BITS;
 850                 val = (ESR_INT_SRDY0_P1 |
 851                        ESR_INT_DET0_P1 |
 852                        ESR_INT_XSRDY_P1 |
 853                        ESR_INT_XDP_P1_CH3 |
 854                        ESR_INT_XDP_P1_CH2 |
 855                        ESR_INT_XDP_P1_CH1 |
 856                        ESR_INT_XDP_P1_CH0);
 857                 break;
 858
 859         default:
 860                 return -EINVAL;
 861         }
 862
 863         if ((sig & mask) != val) {
 864                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
 865                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
 866                         return 0;
 867                 }
 868                 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
 869                            np->port, (int)(sig & mask), (int)val);
 870                 return -ENODEV;
 871         }
 872         if (np->flags & NIU_FLAGS_HOTPLUG_PHY)
 873                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
 874         return 0;
 875 }
 876
 877 static int serdes_init_1g(struct niu *np)
 878 {
 879         u64 val;
 880
 881         val = nr64(ENET_SERDES_1_PLL_CFG);
 882         val &= ~ENET_SERDES_PLL_FBDIV2;
 883         switch (np->port) {
 884         case 0:
 885                 val |= ENET_SERDES_PLL_HRATE0;
 886                 break;
 887         case 1:
 888                 val |= ENET_SERDES_PLL_HRATE1;
 889                 break;
 890         case 2:
 891                 val |= ENET_SERDES_PLL_HRATE2;
 892                 break;
 893         case 3:
 894                 val |= ENET_SERDES_PLL_HRATE3;
 895                 break;
 896         default:
 897                 return -EINVAL;
 898         }
 899         nw64(ENET_SERDES_1_PLL_CFG, val);
 900
 901         return 0;
 902 }
 903
 904 static int serdes_init_1g_serdes(struct niu *np)
 905 {
 906         struct niu_link_config *lp = &np->link_config;
 907         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
 908         u64 ctrl_val, test_cfg_val, sig, mask, val;
 909         int err;
 910         u64 reset_val, val_rd;
 911
 912         val = ENET_SERDES_PLL_HRATE0 | ENET_SERDES_PLL_HRATE1 |
 913                 ENET_SERDES_PLL_HRATE2 | ENET_SERDES_PLL_HRATE3 |
 914                 ENET_SERDES_PLL_FBDIV0;
 915         switch (np->port) {
 916         case 0:
 917                 reset_val =  ENET_SERDES_RESET_0;
 918                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
 919                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
 920                 pll_cfg = ENET_SERDES_0_PLL_CFG;
 921                 break;
 922         case 1:
 923                 reset_val =  ENET_SERDES_RESET_1;
 924                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
 925                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
 926                 pll_cfg = ENET_SERDES_1_PLL_CFG;
 927                 break;
 928
 929         default:
 930                 return -EINVAL;
 931         }
 932         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
 933                     ENET_SERDES_CTRL_SDET_1 |
 934                     ENET_SERDES_CTRL_SDET_2 |
 935                     ENET_SERDES_CTRL_SDET_3 |
 936                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
 937                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
 938                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
 939                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
 940                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
 941                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
 942                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
 943                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
 944         test_cfg_val = 0;
 945
 946         if (lp->loopback_mode == LOOPBACK_PHY) {
 947                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
 948                                   ENET_SERDES_TEST_MD_0_SHIFT) |
 949                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 950                                   ENET_SERDES_TEST_MD_1_SHIFT) |
 951                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 952                                   ENET_SERDES_TEST_MD_2_SHIFT) |
 953                                  (ENET_TEST_MD_PAD_LOOPBACK <<
 954                                   ENET_SERDES_TEST_MD_3_SHIFT));
 955         }
 956
 957         nw64(ENET_SERDES_RESET, reset_val);
 958         mdelay(20);
 959         val_rd = nr64(ENET_SERDES_RESET);
 960         val_rd &= ~reset_val;
 961         nw64(pll_cfg, val);
 962         nw64(ctrl_reg, ctrl_val);
 963         nw64(test_cfg_reg, test_cfg_val);
 964         nw64(ENET_SERDES_RESET, val_rd);
 965         mdelay(2000);
 966
 967         /* Initialize all 4 lanes of the SERDES.  */
 968         for (i = 0; i < 4; i++) {
 969                 u32 rxtx_ctrl, glue0;
 970
 971                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
 972                 if (err)
 973                         return err;
 974                 err = esr_read_glue0(np, i, &glue0);
 975                 if (err)
 976                         return err;
 977
 978                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
 979                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
 980                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
 981
 982                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
 983                            ESR_GLUE_CTRL0_THCNT |
 984                            ESR_GLUE_CTRL0_BLTIME);
 985                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
 986                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
 987                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
 988                           (BLTIME_300_CYCLES <<
 989                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
 990
 991                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
 992                 if (err)
 993                         return err;
 994                 err = esr_write_glue0(np, i, glue0);
 995                 if (err)
 996                         return err;
 997         }
 998
 999
1000         sig = nr64(ESR_INT_SIGNALS);
1001         switch (np->port) {
1002         case 0:
1003                 val = (ESR_INT_SRDY0_P0 | ESR_INT_DET0_P0);
1004                 mask = val;
1005                 break;
1006
1007         case 1:
1008                 val = (ESR_INT_SRDY0_P1 | ESR_INT_DET0_P1);
1009                 mask = val;
1010                 break;
1011
1012         default:
1013                 return -EINVAL;
1014         }
1015
1016         if ((sig & mask) != val) {
1017                 netdev_err(np->dev, "Port %u signal bits [%08x] are not [%08x]\n",
1018                            np->port, (int)(sig & mask), (int)val);
1019                 return -ENODEV;
1020         }
1021
1022         return 0;
1023 }
1024
1025 static int link_status_1g_serdes(struct niu *np, int *link_up_p)
1026 {
1027         struct niu_link_config *lp = &np->link_config;
1028         int link_up;
1029         u64 val;
1030         u16 current_speed;
1031         unsigned long flags;
1032         u8 current_duplex;
1033
1034         link_up = 0;
1035         current_speed = SPEED_INVALID;
1036         current_duplex = DUPLEX_INVALID;
1037
1038         spin_lock_irqsave(&np->lock, flags);
1039
1040         val = nr64_pcs(PCS_MII_STAT);
1041
1042         if (val & PCS_MII_STAT_LINK_STATUS) {
1043                 link_up = 1;
1044                 current_speed = SPEED_1000;
1045                 current_duplex = DUPLEX_FULL;
1046         }
1047
1048         lp->active_speed = current_speed;
1049         lp->active_duplex = current_duplex;
1050         spin_unlock_irqrestore(&np->lock, flags);
1051
1052         *link_up_p = link_up;
1053         return 0;
1054 }
1055
1056 static int link_status_10g_serdes(struct niu *np, int *link_up_p)
1057 {
1058         unsigned long flags;
1059         struct niu_link_config *lp = &np->link_config;
1060         int link_up = 0;
1061         int link_ok = 1;
1062         u64 val, val2;
1063         u16 current_speed;
1064         u8 current_duplex;
1065
1066         if (!(np->flags & NIU_FLAGS_10G))
1067                 return link_status_1g_serdes(np, link_up_p);
1068
1069         current_speed = SPEED_INVALID;
1070         current_duplex = DUPLEX_INVALID;
1071         spin_lock_irqsave(&np->lock, flags);
1072
1073         val = nr64_xpcs(XPCS_STATUS(0));
1074         val2 = nr64_mac(XMAC_INTER2);
1075         if (val2 & 0x01000000)
1076                 link_ok = 0;
1077
1078         if ((val & 0x1000ULL) && link_ok) {
1079                 link_up = 1;
1080                 current_speed = SPEED_10000;
1081                 current_duplex = DUPLEX_FULL;
1082         }
1083         lp->active_speed = current_speed;
1084         lp->active_duplex = current_duplex;
1085         spin_unlock_irqrestore(&np->lock, flags);
1086         *link_up_p = link_up;
1087         return 0;
1088 }
1089
1090 static int link_status_mii(struct niu *np, int *link_up_p)
1091 {
1092         struct niu_link_config *lp = &np->link_config;
1093         int err;
1094         int bmsr, advert, ctrl1000, stat1000, lpa, bmcr, estatus;
1095         int supported, advertising, active_speed, active_duplex;
1096
1097         err = mii_read(np, np->phy_addr, MII_BMCR);
1098         if (unlikely(err < 0))
1099                 return err;
1100         bmcr = err;
1101
1102         err = mii_read(np, np->phy_addr, MII_BMSR);
1103         if (unlikely(err < 0))
1104                 return err;
1105         bmsr = err;
1106
1107         err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1108         if (unlikely(err < 0))
1109                 return err;
1110         advert = err;
1111
1112         err = mii_read(np, np->phy_addr, MII_LPA);
1113         if (unlikely(err < 0))
1114                 return err;
1115         lpa = err;
1116
1117         if (likely(bmsr & BMSR_ESTATEN)) {
1118                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1119                 if (unlikely(err < 0))
1120                         return err;
1121                 estatus = err;
1122
1123                 err = mii_read(np, np->phy_addr, MII_CTRL1000);
1124                 if (unlikely(err < 0))
1125                         return err;
1126                 ctrl1000 = err;
1127
1128                 err = mii_read(np, np->phy_addr, MII_STAT1000);
1129                 if (unlikely(err < 0))
1130                         return err;
1131                 stat1000 = err;
1132         } else
1133                 estatus = ctrl1000 = stat1000 = 0;
1134
1135         supported = 0;
1136         if (bmsr & BMSR_ANEGCAPABLE)
1137                 supported |= SUPPORTED_Autoneg;
1138         if (bmsr & BMSR_10HALF)
1139                 supported |= SUPPORTED_10baseT_Half;
1140         if (bmsr & BMSR_10FULL)
1141                 supported |= SUPPORTED_10baseT_Full;
1142         if (bmsr & BMSR_100HALF)
1143                 supported |= SUPPORTED_100baseT_Half;
1144         if (bmsr & BMSR_100FULL)
1145                 supported |= SUPPORTED_100baseT_Full;
1146         if (estatus & ESTATUS_1000_THALF)
1147                 supported |= SUPPORTED_1000baseT_Half;
1148         if (estatus & ESTATUS_1000_TFULL)
1149                 supported |= SUPPORTED_1000baseT_Full;
1150         lp->supported = supported;
1151
1152         advertising = 0;
1153         if (advert & ADVERTISE_10HALF)
1154                 advertising |= ADVERTISED_10baseT_Half;
1155         if (advert & ADVERTISE_10FULL)
1156                 advertising |= ADVERTISED_10baseT_Full;
1157         if (advert & ADVERTISE_100HALF)
1158                 advertising |= ADVERTISED_100baseT_Half;
1159         if (advert & ADVERTISE_100FULL)
1160                 advertising |= ADVERTISED_100baseT_Full;
1161         if (ctrl1000 & ADVERTISE_1000HALF)
1162                 advertising |= ADVERTISED_1000baseT_Half;
1163         if (ctrl1000 & ADVERTISE_1000FULL)
1164                 advertising |= ADVERTISED_1000baseT_Full;
1165
1166         if (bmcr & BMCR_ANENABLE) {
1167                 int neg, neg1000;
1168
1169                 lp->active_autoneg = 1;
1170                 advertising |= ADVERTISED_Autoneg;
1171
1172                 neg = advert & lpa;
1173                 neg1000 = (ctrl1000 << 2) & stat1000;
1174
1175                 if (neg1000 & (LPA_1000FULL | LPA_1000HALF))
1176                         active_speed = SPEED_1000;
1177                 else if (neg & LPA_100)
1178                         active_speed = SPEED_100;
1179                 else if (neg & (LPA_10HALF | LPA_10FULL))
1180                         active_speed = SPEED_10;
1181                 else
1182                         active_speed = SPEED_INVALID;
1183
1184                 if ((neg1000 & LPA_1000FULL) || (neg & LPA_DUPLEX))
1185                         active_duplex = DUPLEX_FULL;
1186                 else if (active_speed != SPEED_INVALID)
1187                         active_duplex = DUPLEX_HALF;
1188                 else
1189                         active_duplex = DUPLEX_INVALID;
1190         } else {
1191                 lp->active_autoneg = 0;
1192
1193                 if ((bmcr & BMCR_SPEED1000) && !(bmcr & BMCR_SPEED100))
1194                         active_speed = SPEED_1000;
1195                 else if (bmcr & BMCR_SPEED100)
1196                         active_speed = SPEED_100;
1197                 else
1198                         active_speed = SPEED_10;
1199
1200                 if (bmcr & BMCR_FULLDPLX)
1201                         active_duplex = DUPLEX_FULL;
1202                 else
1203                         active_duplex = DUPLEX_HALF;
1204         }
1205
1206         lp->active_advertising = advertising;
1207         lp->active_speed = active_speed;
1208         lp->active_duplex = active_duplex;
1209         *link_up_p = !!(bmsr & BMSR_LSTATUS);
1210
1211         return 0;
1212 }
1213
1214 static int link_status_1g_rgmii(struct niu *np, int *link_up_p)
1215 {
1216         struct niu_link_config *lp = &np->link_config;
1217         u16 current_speed, bmsr;
1218         unsigned long flags;
1219         u8 current_duplex;
1220         int err, link_up;
1221
1222         link_up = 0;
1223         current_speed = SPEED_INVALID;
1224         current_duplex = DUPLEX_INVALID;
1225
1226         spin_lock_irqsave(&np->lock, flags);
1227
1228         err = -EINVAL;
1229
1230         err = mii_read(np, np->phy_addr, MII_BMSR);
1231         if (err < 0)
1232                 goto out;
1233
1234         bmsr = err;
1235         if (bmsr & BMSR_LSTATUS) {
1236                 u16 adv, lpa, common, estat;
1237
1238                 err = mii_read(np, np->phy_addr, MII_ADVERTISE);
1239                 if (err < 0)
1240                         goto out;
1241                 adv = err;
1242
1243                 err = mii_read(np, np->phy_addr, MII_LPA);
1244                 if (err < 0)
1245                         goto out;
1246                 lpa = err;
1247
1248                 common = adv & lpa;
1249
1250                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1251                 if (err < 0)
1252                         goto out;
1253                 estat = err;
1254                 link_up = 1;
1255                 current_speed = SPEED_1000;
1256                 current_duplex = DUPLEX_FULL;
1257
1258         }
1259         lp->active_speed = current_speed;
1260         lp->active_duplex = current_duplex;
1261         err = 0;
1262
1263 out:
1264         spin_unlock_irqrestore(&np->lock, flags);
1265
1266         *link_up_p = link_up;
1267         return err;
1268 }
1269
1270 static int link_status_1g(struct niu *np, int *link_up_p)
1271 {
1272         struct niu_link_config *lp = &np->link_config;
1273         unsigned long flags;
1274         int err;
1275
1276         spin_lock_irqsave(&np->lock, flags);
1277
1278         err = link_status_mii(np, link_up_p);
1279         lp->supported |= SUPPORTED_TP;
1280         lp->active_advertising |= ADVERTISED_TP;
1281
1282         spin_unlock_irqrestore(&np->lock, flags);
1283         return err;
1284 }
1285
1286 static int bcm8704_reset(struct niu *np)
1287 {
1288         int err, limit;
1289
1290         err = mdio_read(np, np->phy_addr,
1291                         BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1292         if (err < 0 || err == 0xffff)
1293                 return err;
1294         err |= BMCR_RESET;
1295         err = mdio_write(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1296                          MII_BMCR, err);
1297         if (err)
1298                 return err;
1299
1300         limit = 1000;
1301         while (--limit >= 0) {
1302                 err = mdio_read(np, np->phy_addr,
1303                                 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
1304                 if (err < 0)
1305                         return err;
1306                 if (!(err & BMCR_RESET))
1307                         break;
1308         }
1309         if (limit < 0) {
1310                 netdev_err(np->dev, "Port %u PHY will not reset (bmcr=%04x)\n",
1311                            np->port, (err & 0xffff));
1312                 return -ENODEV;
1313         }
1314         return 0;
1315 }
1316
1317 /* When written, certain PHY registers need to be read back twice
1318  * in order for the bits to settle properly.
1319  */
1320 static int bcm8704_user_dev3_readback(struct niu *np, int reg)
1321 {
1322         int err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1323         if (err < 0)
1324                 return err;
1325         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, reg);
1326         if (err < 0)
1327                 return err;
1328         return 0;
1329 }
1330
1331 static int bcm8706_init_user_dev3(struct niu *np)
1332 {
1333         int err;
1334
1335
1336         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1337                         BCM8704_USER_OPT_DIGITAL_CTRL);
1338         if (err < 0)
1339                 return err;
1340         err &= ~USER_ODIG_CTRL_GPIOS;
1341         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1342         err |=  USER_ODIG_CTRL_RESV2;
1343         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1344                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1345         if (err)
1346                 return err;
1347
1348         mdelay(1000);
1349
1350         return 0;
1351 }
1352
1353 static int bcm8704_init_user_dev3(struct niu *np)
1354 {
1355         int err;
1356
1357         err = mdio_write(np, np->phy_addr,
1358                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_CONTROL,
1359                          (USER_CONTROL_OPTXRST_LVL |
1360                           USER_CONTROL_OPBIASFLT_LVL |
1361                           USER_CONTROL_OBTMPFLT_LVL |
1362                           USER_CONTROL_OPPRFLT_LVL |
1363                           USER_CONTROL_OPTXFLT_LVL |
1364                           USER_CONTROL_OPRXLOS_LVL |
1365                           USER_CONTROL_OPRXFLT_LVL |
1366                           USER_CONTROL_OPTXON_LVL |
1367                           (0x3f << USER_CONTROL_RES1_SHIFT)));
1368         if (err)
1369                 return err;
1370
1371         err = mdio_write(np, np->phy_addr,
1372                          BCM8704_USER_DEV3_ADDR, BCM8704_USER_PMD_TX_CONTROL,
1373                          (USER_PMD_TX_CTL_XFP_CLKEN |
1374                           (1 << USER_PMD_TX_CTL_TX_DAC_TXD_SH) |
1375                           (2 << USER_PMD_TX_CTL_TX_DAC_TXCK_SH) |
1376                           USER_PMD_TX_CTL_TSCK_LPWREN));
1377         if (err)
1378                 return err;
1379
1380         err = bcm8704_user_dev3_readback(np, BCM8704_USER_CONTROL);
1381         if (err)
1382                 return err;
1383         err = bcm8704_user_dev3_readback(np, BCM8704_USER_PMD_TX_CONTROL);
1384         if (err)
1385                 return err;
1386
1387         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1388                         BCM8704_USER_OPT_DIGITAL_CTRL);
1389         if (err < 0)
1390                 return err;
1391         err &= ~USER_ODIG_CTRL_GPIOS;
1392         err |= (0x3 << USER_ODIG_CTRL_GPIOS_SHIFT);
1393         err = mdio_write(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1394                          BCM8704_USER_OPT_DIGITAL_CTRL, err);
1395         if (err)
1396                 return err;
1397
1398         mdelay(1000);
1399
1400         return 0;
1401 }
1402
1403 static int mrvl88x2011_act_led(struct niu *np, int val)
1404 {
1405         int     err;
1406
1407         err  = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1408                 MRVL88X2011_LED_8_TO_11_CTL);
1409         if (err < 0)
1410                 return err;
1411
1412         err &= ~MRVL88X2011_LED(MRVL88X2011_LED_ACT,MRVL88X2011_LED_CTL_MASK);
1413         err |=  MRVL88X2011_LED(MRVL88X2011_LED_ACT,val);
1414
1415         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1416                           MRVL88X2011_LED_8_TO_11_CTL, err);
1417 }
1418
1419 static int mrvl88x2011_led_blink_rate(struct niu *np, int rate)
1420 {
1421         int     err;
1422
1423         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1424                         MRVL88X2011_LED_BLINK_CTL);
1425         if (err >= 0) {
1426                 err &= ~MRVL88X2011_LED_BLKRATE_MASK;
1427                 err |= (rate << 4);
1428
1429                 err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV2_ADDR,
1430                                  MRVL88X2011_LED_BLINK_CTL, err);
1431         }
1432
1433         return err;
1434 }
1435
1436 static int xcvr_init_10g_mrvl88x2011(struct niu *np)
1437 {
1438         int     err;
1439
1440         /* Set LED functions */
1441         err = mrvl88x2011_led_blink_rate(np, MRVL88X2011_LED_BLKRATE_134MS);
1442         if (err)
1443                 return err;
1444
1445         /* led activity */
1446         err = mrvl88x2011_act_led(np, MRVL88X2011_LED_CTL_OFF);
1447         if (err)
1448                 return err;
1449
1450         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1451                         MRVL88X2011_GENERAL_CTL);
1452         if (err < 0)
1453                 return err;
1454
1455         err |= MRVL88X2011_ENA_XFPREFCLK;
1456
1457         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1458                          MRVL88X2011_GENERAL_CTL, err);
1459         if (err < 0)
1460                 return err;
1461
1462         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1463                         MRVL88X2011_PMA_PMD_CTL_1);
1464         if (err < 0)
1465                 return err;
1466
1467         if (np->link_config.loopback_mode == LOOPBACK_MAC)
1468                 err |= MRVL88X2011_LOOPBACK;
1469         else
1470                 err &= ~MRVL88X2011_LOOPBACK;
1471
1472         err = mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1473                          MRVL88X2011_PMA_PMD_CTL_1, err);
1474         if (err < 0)
1475                 return err;
1476
1477         /* Enable PMD  */
1478         return mdio_write(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1479                           MRVL88X2011_10G_PMD_TX_DIS, MRVL88X2011_ENA_PMDTX);
1480 }
1481
1482
1483 static int xcvr_diag_bcm870x(struct niu *np)
1484 {
1485         u16 analog_stat0, tx_alarm_status;
1486         int err = 0;
1487
1488 #if 1
1489         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
1490                         MII_STAT1000);
1491         if (err < 0)
1492                 return err;
1493         pr_info("Port %u PMA_PMD(MII_STAT1000) [%04x]\n", np->port, err);
1494
1495         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR, 0x20);
1496         if (err < 0)
1497                 return err;
1498         pr_info("Port %u USER_DEV3(0x20) [%04x]\n", np->port, err);
1499
1500         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
1501                         MII_NWAYTEST);
1502         if (err < 0)
1503                 return err;
1504         pr_info("Port %u PHYXS(MII_NWAYTEST) [%04x]\n", np->port, err);
1505 #endif
1506
1507         /* XXX dig this out it might not be so useful XXX */
1508         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1509                         BCM8704_USER_ANALOG_STATUS0);
1510         if (err < 0)
1511                 return err;
1512         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1513                         BCM8704_USER_ANALOG_STATUS0);
1514         if (err < 0)
1515                 return err;
1516         analog_stat0 = err;
1517
1518         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1519                         BCM8704_USER_TX_ALARM_STATUS);
1520         if (err < 0)
1521                 return err;
1522         err = mdio_read(np, np->phy_addr, BCM8704_USER_DEV3_ADDR,
1523                         BCM8704_USER_TX_ALARM_STATUS);
1524         if (err < 0)
1525                 return err;
1526         tx_alarm_status = err;
1527
1528         if (analog_stat0 != 0x03fc) {
1529                 if ((analog_stat0 == 0x43bc) && (tx_alarm_status != 0)) {
1530                         pr_info("Port %u cable not connected or bad cable\n",
1531                                 np->port);
1532                 } else if (analog_stat0 == 0x639c) {
1533                         pr_info("Port %u optical module is bad or missing\n",
1534                                 np->port);
1535                 }
1536         }
1537
1538         return 0;
1539 }
1540
1541 static int xcvr_10g_set_lb_bcm870x(struct niu *np)
1542 {
1543         struct niu_link_config *lp = &np->link_config;
1544         int err;
1545
1546         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1547                         MII_BMCR);
1548         if (err < 0)
1549                 return err;
1550
1551         err &= ~BMCR_LOOPBACK;
1552
1553         if (lp->loopback_mode == LOOPBACK_MAC)
1554                 err |= BMCR_LOOPBACK;
1555
1556         err = mdio_write(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
1557                          MII_BMCR, err);
1558         if (err)
1559                 return err;
1560
1561         return 0;
1562 }
1563
1564 static int xcvr_init_10g_bcm8706(struct niu *np)
1565 {
1566         int err = 0;
1567         u64 val;
1568
1569         if ((np->flags & NIU_FLAGS_HOTPLUG_PHY) &&
1570             (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) == 0)
1571                         return err;
1572
1573         val = nr64_mac(XMAC_CONFIG);
1574         val &= ~XMAC_CONFIG_LED_POLARITY;
1575         val |= XMAC_CONFIG_FORCE_LED_ON;
1576         nw64_mac(XMAC_CONFIG, val);
1577
1578         val = nr64(MIF_CONFIG);
1579         val |= MIF_CONFIG_INDIRECT_MODE;
1580         nw64(MIF_CONFIG, val);
1581
1582         err = bcm8704_reset(np);
1583         if (err)
1584                 return err;
1585
1586         err = xcvr_10g_set_lb_bcm870x(np);
1587         if (err)
1588                 return err;
1589
1590         err = bcm8706_init_user_dev3(np);
1591         if (err)
1592                 return err;
1593
1594         err = xcvr_diag_bcm870x(np);
1595         if (err)
1596                 return err;
1597
1598         return 0;
1599 }
1600
1601 static int xcvr_init_10g_bcm8704(struct niu *np)
1602 {
1603         int err;
1604
1605         err = bcm8704_reset(np);
1606         if (err)
1607                 return err;
1608
1609         err = bcm8704_init_user_dev3(np);
1610         if (err)
1611                 return err;
1612
1613         err = xcvr_10g_set_lb_bcm870x(np);
1614         if (err)
1615                 return err;
1616
1617         err =  xcvr_diag_bcm870x(np);
1618         if (err)
1619                 return err;
1620
1621         return 0;
1622 }
1623
1624 static int xcvr_init_10g(struct niu *np)
1625 {
1626         int phy_id, err;
1627         u64 val;
1628
1629         val = nr64_mac(XMAC_CONFIG);
1630         val &= ~XMAC_CONFIG_LED_POLARITY;
1631         val |= XMAC_CONFIG_FORCE_LED_ON;
1632         nw64_mac(XMAC_CONFIG, val);
1633
1634         /* XXX shared resource, lock parent XXX */
1635         val = nr64(MIF_CONFIG);
1636         val |= MIF_CONFIG_INDIRECT_MODE;
1637         nw64(MIF_CONFIG, val);
1638
1639         phy_id = phy_decode(np->parent->port_phy, np->port);
1640         phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
1641
1642         /* handle different phy types */
1643         switch (phy_id & NIU_PHY_ID_MASK) {
1644         case NIU_PHY_ID_MRVL88X2011:
1645                 err = xcvr_init_10g_mrvl88x2011(np);
1646                 break;
1647
1648         default: /* bcom 8704 */
1649                 err = xcvr_init_10g_bcm8704(np);
1650                 break;
1651         }
1652
1653         return 0;
1654 }
1655
1656 static int mii_reset(struct niu *np)
1657 {
1658         int limit, err;
1659
1660         err = mii_write(np, np->phy_addr, MII_BMCR, BMCR_RESET);
1661         if (err)
1662                 return err;
1663
1664         limit = 1000;
1665         while (--limit >= 0) {
1666                 udelay(500);
1667                 err = mii_read(np, np->phy_addr, MII_BMCR);
1668                 if (err < 0)
1669                         return err;
1670                 if (!(err & BMCR_RESET))
1671                         break;
1672         }
1673         if (limit < 0) {
1674                 netdev_err(np->dev, "Port %u MII would not reset, bmcr[%04x]\n",
1675                            np->port, err);
1676                 return -ENODEV;
1677         }
1678
1679         return 0;
1680 }
1681
1682 static int xcvr_init_1g_rgmii(struct niu *np)
1683 {
1684         int err;
1685         u64 val;
1686         u16 bmcr, bmsr, estat;
1687
1688         val = nr64(MIF_CONFIG);
1689         val &= ~MIF_CONFIG_INDIRECT_MODE;
1690         nw64(MIF_CONFIG, val);
1691
1692         err = mii_reset(np);
1693         if (err)
1694                 return err;
1695
1696         err = mii_read(np, np->phy_addr, MII_BMSR);
1697         if (err < 0)
1698                 return err;
1699         bmsr = err;
1700
1701         estat = 0;
1702         if (bmsr & BMSR_ESTATEN) {
1703                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1704                 if (err < 0)
1705                         return err;
1706                 estat = err;
1707         }
1708
1709         bmcr = 0;
1710         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1711         if (err)
1712                 return err;
1713
1714         if (bmsr & BMSR_ESTATEN) {
1715                 u16 ctrl1000 = 0;
1716
1717                 if (estat & ESTATUS_1000_TFULL)
1718                         ctrl1000 |= ADVERTISE_1000FULL;
1719                 err = mii_write(np, np->phy_addr, MII_CTRL1000, ctrl1000);
1720                 if (err)
1721                         return err;
1722         }
1723
1724         bmcr = (BMCR_SPEED1000 | BMCR_FULLDPLX);
1725
1726         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1727         if (err)
1728                 return err;
1729
1730         err = mii_read(np, np->phy_addr, MII_BMCR);
1731         if (err < 0)
1732                 return err;
1733         bmcr = mii_read(np, np->phy_addr, MII_BMCR);
1734
1735         err = mii_read(np, np->phy_addr, MII_BMSR);
1736         if (err < 0)
1737                 return err;
1738
1739         return 0;
1740 }
1741
1742 static int mii_init_common(struct niu *np)
1743 {
1744         struct niu_link_config *lp = &np->link_config;
1745         u16 bmcr, bmsr, adv, estat;
1746         int err;
1747
1748         err = mii_reset(np);
1749         if (err)
1750                 return err;
1751
1752         err = mii_read(np, np->phy_addr, MII_BMSR);
1753         if (err < 0)
1754                 return err;
1755         bmsr = err;
1756
1757         estat = 0;
1758         if (bmsr & BMSR_ESTATEN) {
1759                 err = mii_read(np, np->phy_addr, MII_ESTATUS);
1760                 if (err < 0)
1761                         return err;
1762                 estat = err;
1763         }
1764
1765         bmcr = 0;
1766         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1767         if (err)
1768                 return err;
1769
1770         if (lp->loopback_mode == LOOPBACK_MAC) {
1771                 bmcr |= BMCR_LOOPBACK;
1772                 if (lp->active_speed == SPEED_1000)
1773                         bmcr |= BMCR_SPEED1000;
1774                 if (lp->active_duplex == DUPLEX_FULL)
1775                         bmcr |= BMCR_FULLDPLX;
1776         }
1777
1778         if (lp->loopback_mode == LOOPBACK_PHY) {
1779                 u16 aux;
1780
1781                 aux = (BCM5464R_AUX_CTL_EXT_LB |
1782                        BCM5464R_AUX_CTL_WRITE_1);
1783                 err = mii_write(np, np->phy_addr, BCM5464R_AUX_CTL, aux);
1784                 if (err)
1785                         return err;
1786         }
1787
1788         if (lp->autoneg) {
1789                 u16 ctrl1000;
1790
1791                 adv = ADVERTISE_CSMA | ADVERTISE_PAUSE_CAP;
1792                 if ((bmsr & BMSR_10HALF) &&
1793                         (lp->advertising & ADVERTISED_10baseT_Half))
1794                         adv |= ADVERTISE_10HALF;
1795                 if ((bmsr & BMSR_10FULL) &&
1796                         (lp->advertising & ADVERTISED_10baseT_Full))
1797                         adv |= ADVERTISE_10FULL;
1798                 if ((bmsr & BMSR_100HALF) &&
1799                         (lp->advertising & ADVERTISED_100baseT_Half))
1800                         adv |= ADVERTISE_100HALF;
1801                 if ((bmsr & BMSR_100FULL) &&
1802                         (lp->advertising & ADVERTISED_100baseT_Full))
1803                         adv |= ADVERTISE_100FULL;
1804                 err = mii_write(np, np->phy_addr, MII_ADVERTISE, adv);
1805                 if (err)
1806                         return err;
1807
1808                 if (likely(bmsr & BMSR_ESTATEN)) {
1809                         ctrl1000 = 0;
1810                         if ((estat & ESTATUS_1000_THALF) &&
1811                                 (lp->advertising & ADVERTISED_1000baseT_Half))
1812                                 ctrl1000 |= ADVERTISE_1000HALF;
1813                         if ((estat & ESTATUS_1000_TFULL) &&
1814                                 (lp->advertising & ADVERTISED_1000baseT_Full))
1815                                 ctrl1000 |= ADVERTISE_1000FULL;
1816                         err = mii_write(np, np->phy_addr,
1817                                         MII_CTRL1000, ctrl1000);
1818                         if (err)
1819                                 return err;
1820                 }
1821
1822                 bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART);
1823         } else {
1824                 /* !lp->autoneg */
1825                 int fulldpx;
1826
1827                 if (lp->duplex == DUPLEX_FULL) {
1828                         bmcr |= BMCR_FULLDPLX;
1829                         fulldpx = 1;
1830                 } else if (lp->duplex == DUPLEX_HALF)
1831                         fulldpx = 0;
1832                 else
1833                         return -EINVAL;
1834
1835                 if (lp->speed == SPEED_1000) {
1836                         /* if X-full requested while not supported, or
1837                            X-half requested while not supported... */
1838                         if ((fulldpx && !(estat & ESTATUS_1000_TFULL)) ||
1839                                 (!fulldpx && !(estat & ESTATUS_1000_THALF)))
1840                                 return -EINVAL;
1841                         bmcr |= BMCR_SPEED1000;
1842                 } else if (lp->speed == SPEED_100) {
1843                         if ((fulldpx && !(bmsr & BMSR_100FULL)) ||
1844                                 (!fulldpx && !(bmsr & BMSR_100HALF)))
1845                                 return -EINVAL;
1846                         bmcr |= BMCR_SPEED100;
1847                 } else if (lp->speed == SPEED_10) {
1848                         if ((fulldpx && !(bmsr & BMSR_10FULL)) ||
1849                                 (!fulldpx && !(bmsr & BMSR_10HALF)))
1850                                 return -EINVAL;
1851                 } else
1852                         return -EINVAL;
1853         }
1854
1855         err = mii_write(np, np->phy_addr, MII_BMCR, bmcr);
1856         if (err)
1857                 return err;
1858
1859 #if 0
1860         err = mii_read(np, np->phy_addr, MII_BMCR);
1861         if (err < 0)
1862                 return err;
1863         bmcr = err;
1864
1865         err = mii_read(np, np->phy_addr, MII_BMSR);
1866         if (err < 0)
1867                 return err;
1868         bmsr = err;
1869
1870         pr_info("Port %u after MII init bmcr[%04x] bmsr[%04x]\n",
1871                 np->port, bmcr, bmsr);
1872 #endif
1873
1874         return 0;
1875 }
1876
1877 static int xcvr_init_1g(struct niu *np)
1878 {
1879         u64 val;
1880
1881         /* XXX shared resource, lock parent XXX */
1882         val = nr64(MIF_CONFIG);
1883         val &= ~MIF_CONFIG_INDIRECT_MODE;
1884         nw64(MIF_CONFIG, val);
1885
1886         return mii_init_common(np);
1887 }
1888
1889 static int niu_xcvr_init(struct niu *np)
1890 {
1891         const struct niu_phy_ops *ops = np->phy_ops;
1892         int err;
1893
1894         err = 0;
1895         if (ops->xcvr_init)
1896                 err = ops->xcvr_init(np);
1897
1898         return err;
1899 }
1900
1901 static int niu_serdes_init(struct niu *np)
1902 {
1903         const struct niu_phy_ops *ops = np->phy_ops;
1904         int err;
1905
1906         err = 0;
1907         if (ops->serdes_init)
1908                 err = ops->serdes_init(np);
1909
1910         return err;
1911 }
1912
1913 static void niu_init_xif(struct niu *);
1914 static void niu_handle_led(struct niu *, int status);
1915
1916 static int niu_link_status_common(struct niu *np, int link_up)
1917 {
1918         struct niu_link_config *lp = &np->link_config;
1919         struct net_device *dev = np->dev;
1920         unsigned long flags;
1921
1922         if (!netif_carrier_ok(dev) && link_up) {
1923                 netif_info(np, link, dev, "Link is up at %s, %s duplex\n",
1924                            lp->active_speed == SPEED_10000 ? "10Gb/sec" :
1925                            lp->active_speed == SPEED_1000 ? "1Gb/sec" :
1926                            lp->active_speed == SPEED_100 ? "100Mbit/sec" :
1927                            "10Mbit/sec",
1928                            lp->active_duplex == DUPLEX_FULL ? "full" : "half");
1929
1930                 spin_lock_irqsave(&np->lock, flags);
1931                 niu_init_xif(np);
1932                 niu_handle_led(np, 1);
1933                 spin_unlock_irqrestore(&np->lock, flags);
1934
1935                 netif_carrier_on(dev);
1936         } else if (netif_carrier_ok(dev) && !link_up) {
1937                 netif_warn(np, link, dev, "Link is down\n");
1938                 spin_lock_irqsave(&np->lock, flags);
1939                 niu_handle_led(np, 0);
1940                 spin_unlock_irqrestore(&np->lock, flags);
1941                 netif_carrier_off(dev);
1942         }
1943
1944         return 0;
1945 }
1946
1947 static int link_status_10g_mrvl(struct niu *np, int *link_up_p)
1948 {
1949         int err, link_up, pma_status, pcs_status;
1950
1951         link_up = 0;
1952
1953         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1954                         MRVL88X2011_10G_PMD_STATUS_2);
1955         if (err < 0)
1956                 goto out;
1957
1958         /* Check PMA/PMD Register: 1.0001.2 == 1 */
1959         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV1_ADDR,
1960                         MRVL88X2011_PMA_PMD_STATUS_1);
1961         if (err < 0)
1962                 goto out;
1963
1964         pma_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1965
1966         /* Check PMC Register : 3.0001.2 == 1: read twice */
1967         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1968                         MRVL88X2011_PMA_PMD_STATUS_1);
1969         if (err < 0)
1970                 goto out;
1971
1972         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV3_ADDR,
1973                         MRVL88X2011_PMA_PMD_STATUS_1);
1974         if (err < 0)
1975                 goto out;
1976
1977         pcs_status = ((err & MRVL88X2011_LNK_STATUS_OK) ? 1 : 0);
1978
1979         /* Check XGXS Register : 4.0018.[0-3,12] */
1980         err = mdio_read(np, np->phy_addr, MRVL88X2011_USER_DEV4_ADDR,
1981                         MRVL88X2011_10G_XGXS_LANE_STAT);
1982         if (err < 0)
1983                 goto out;
1984
1985         if (err == (PHYXS_XGXS_LANE_STAT_ALINGED | PHYXS_XGXS_LANE_STAT_LANE3 |
1986                     PHYXS_XGXS_LANE_STAT_LANE2 | PHYXS_XGXS_LANE_STAT_LANE1 |
1987                     PHYXS_XGXS_LANE_STAT_LANE0 | PHYXS_XGXS_LANE_STAT_MAGIC |
1988                     0x800))
1989                 link_up = (pma_status && pcs_status) ? 1 : 0;
1990
1991         np->link_config.active_speed = SPEED_10000;
1992         np->link_config.active_duplex = DUPLEX_FULL;
1993         err = 0;
1994 out:
1995         mrvl88x2011_act_led(np, (link_up ?
1996                                  MRVL88X2011_LED_CTL_PCS_ACT :
1997                                  MRVL88X2011_LED_CTL_OFF));
1998
1999         *link_up_p = link_up;
2000         return err;
2001 }
2002
2003 static int link_status_10g_bcm8706(struct niu *np, int *link_up_p)
2004 {
2005         int err, link_up;
2006         link_up = 0;
2007
2008         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2009                         BCM8704_PMD_RCV_SIGDET);
2010         if (err < 0 || err == 0xffff)
2011                 goto out;
2012         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2013                 err = 0;
2014                 goto out;
2015         }
2016
2017         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2018                         BCM8704_PCS_10G_R_STATUS);
2019         if (err < 0)
2020                 goto out;
2021
2022         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2023                 err = 0;
2024                 goto out;
2025         }
2026
2027         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2028                         BCM8704_PHYXS_XGXS_LANE_STAT);
2029         if (err < 0)
2030                 goto out;
2031         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2032                     PHYXS_XGXS_LANE_STAT_MAGIC |
2033                     PHYXS_XGXS_LANE_STAT_PATTEST |
2034                     PHYXS_XGXS_LANE_STAT_LANE3 |
2035                     PHYXS_XGXS_LANE_STAT_LANE2 |
2036                     PHYXS_XGXS_LANE_STAT_LANE1 |
2037                     PHYXS_XGXS_LANE_STAT_LANE0)) {
2038                 err = 0;
2039                 np->link_config.active_speed = SPEED_INVALID;
2040                 np->link_config.active_duplex = DUPLEX_INVALID;
2041                 goto out;
2042         }
2043
2044         link_up = 1;
2045         np->link_config.active_speed = SPEED_10000;
2046         np->link_config.active_duplex = DUPLEX_FULL;
2047         err = 0;
2048
2049 out:
2050         *link_up_p = link_up;
2051         return err;
2052 }
2053
2054 static int link_status_10g_bcom(struct niu *np, int *link_up_p)
2055 {
2056         int err, link_up;
2057
2058         link_up = 0;
2059
2060         err = mdio_read(np, np->phy_addr, BCM8704_PMA_PMD_DEV_ADDR,
2061                         BCM8704_PMD_RCV_SIGDET);
2062         if (err < 0)
2063                 goto out;
2064         if (!(err & PMD_RCV_SIGDET_GLOBAL)) {
2065                 err = 0;
2066                 goto out;
2067         }
2068
2069         err = mdio_read(np, np->phy_addr, BCM8704_PCS_DEV_ADDR,
2070                         BCM8704_PCS_10G_R_STATUS);
2071         if (err < 0)
2072                 goto out;
2073         if (!(err & PCS_10G_R_STATUS_BLK_LOCK)) {
2074                 err = 0;
2075                 goto out;
2076         }
2077
2078         err = mdio_read(np, np->phy_addr, BCM8704_PHYXS_DEV_ADDR,
2079                         BCM8704_PHYXS_XGXS_LANE_STAT);
2080         if (err < 0)
2081                 goto out;
2082
2083         if (err != (PHYXS_XGXS_LANE_STAT_ALINGED |
2084                     PHYXS_XGXS_LANE_STAT_MAGIC |
2085                     PHYXS_XGXS_LANE_STAT_LANE3 |
2086                     PHYXS_XGXS_LANE_STAT_LANE2 |
2087                     PHYXS_XGXS_LANE_STAT_LANE1 |
2088                     PHYXS_XGXS_LANE_STAT_LANE0)) {
2089                 err = 0;
2090                 goto out;
2091         }
2092
2093         link_up = 1;
2094         np->link_config.active_speed = SPEED_10000;
2095         np->link_config.active_duplex = DUPLEX_FULL;
2096         err = 0;
2097
2098 out:
2099         *link_up_p = link_up;
2100         return err;
2101 }
2102
2103 static int link_status_10g(struct niu *np, int *link_up_p)
2104 {
2105         unsigned long flags;
2106         int err = -EINVAL;
2107
2108         spin_lock_irqsave(&np->lock, flags);
2109
2110         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2111                 int phy_id;
2112
2113                 phy_id = phy_decode(np->parent->port_phy, np->port);
2114                 phy_id = np->parent->phy_probe_info.phy_id[phy_id][np->port];
2115
2116                 /* handle different phy types */
2117                 switch (phy_id & NIU_PHY_ID_MASK) {
2118                 case NIU_PHY_ID_MRVL88X2011:
2119                         err = link_status_10g_mrvl(np, link_up_p);
2120                         break;
2121
2122                 default: /* bcom 8704 */
2123                         err = link_status_10g_bcom(np, link_up_p);
2124                         break;
2125                 }
2126         }
2127
2128         spin_unlock_irqrestore(&np->lock, flags);
2129
2130         return err;
2131 }
2132
2133 static int niu_10g_phy_present(struct niu *np)
2134 {
2135         u64 sig, mask, val;
2136
2137         sig = nr64(ESR_INT_SIGNALS);
2138         switch (np->port) {
2139         case 0:
2140                 mask = ESR_INT_SIGNALS_P0_BITS;
2141                 val = (ESR_INT_SRDY0_P0 |
2142                        ESR_INT_DET0_P0 |
2143                        ESR_INT_XSRDY_P0 |
2144                        ESR_INT_XDP_P0_CH3 |
2145                        ESR_INT_XDP_P0_CH2 |
2146                        ESR_INT_XDP_P0_CH1 |
2147                        ESR_INT_XDP_P0_CH0);
2148                 break;
2149
2150         case 1:
2151                 mask = ESR_INT_SIGNALS_P1_BITS;
2152                 val = (ESR_INT_SRDY0_P1 |
2153                        ESR_INT_DET0_P1 |
2154                        ESR_INT_XSRDY_P1 |
2155                        ESR_INT_XDP_P1_CH3 |
2156                        ESR_INT_XDP_P1_CH2 |
2157                        ESR_INT_XDP_P1_CH1 |
2158                        ESR_INT_XDP_P1_CH0);
2159                 break;
2160
2161         default:
2162                 return 0;
2163         }
2164
2165         if ((sig & mask) != val)
2166                 return 0;
2167         return 1;
2168 }
2169
2170 static int link_status_10g_hotplug(struct niu *np, int *link_up_p)
2171 {
2172         unsigned long flags;
2173         int err = 0;
2174         int phy_present;
2175         int phy_present_prev;
2176
2177         spin_lock_irqsave(&np->lock, flags);
2178
2179         if (np->link_config.loopback_mode == LOOPBACK_DISABLED) {
2180                 phy_present_prev = (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) ?
2181                         1 : 0;
2182                 phy_present = niu_10g_phy_present(np);
2183                 if (phy_present != phy_present_prev) {
2184                         /* state change */
2185                         if (phy_present) {
2186                                 /* A NEM was just plugged in */
2187                                 np->flags |= NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2188                                 if (np->phy_ops->xcvr_init)
2189                                         err = np->phy_ops->xcvr_init(np);
2190                                 if (err) {
2191                                         err = mdio_read(np, np->phy_addr,
2192                                                 BCM8704_PHYXS_DEV_ADDR, MII_BMCR);
2193                                         if (err == 0xffff) {
2194                                                 /* No mdio, back-to-back XAUI */
2195                                                 goto out;
2196                                         }
2197                                         /* debounce */
2198                                         np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2199                                 }
2200                         } else {
2201                                 np->flags &= ~NIU_FLAGS_HOTPLUG_PHY_PRESENT;
2202                                 *link_up_p = 0;
2203                                 netif_warn(np, link, np->dev,
2204                                            "Hotplug PHY Removed\n");
2205                         }
2206                 }
2207 out:
2208                 if (np->flags & NIU_FLAGS_HOTPLUG_PHY_PRESENT) {
2209                         err = link_status_10g_bcm8706(np, link_up_p);
2210                         if (err == 0xffff) {
2211                                 /* No mdio, back-to-back XAUI: it is C10NEM */
2212                                 *link_up_p = 1;
2213                                 np->link_config.active_speed = SPEED_10000;
2214                                 np->link_config.active_duplex = DUPLEX_FULL;
2215                         }
2216                 }
2217         }
2218
2219         spin_unlock_irqrestore(&np->lock, flags);
2220
2221         return 0;
2222 }
2223
2224 static int niu_link_status(struct niu *np, int *link_up_p)
2225 {
2226         const struct niu_phy_ops *ops = np->phy_ops;
2227         int err;
2228
2229         err = 0;
2230         if (ops->link_status)
2231                 err = ops->link_status(np, link_up_p);
2232
2233         return err;
2234 }
2235
2236 static void niu_timer(unsigned long __opaque)
2237 {
2238         struct niu *np = (struct niu *) __opaque;
2239         unsigned long off;
2240         int err, link_up;
2241
2242         err = niu_link_status(np, &link_up);
2243         if (!err)
2244                 niu_link_status_common(np, link_up);
2245
2246         if (netif_carrier_ok(np->dev))
2247                 off = 5 * HZ;
2248         else
2249                 off = 1 * HZ;
2250         np->timer.expires = jiffies + off;
2251
2252         add_timer(&np->timer);
2253 }
2254
2255 static const struct niu_phy_ops phy_ops_10g_serdes = {
2256         .serdes_init            = serdes_init_10g_serdes,
2257         .link_status            = link_status_10g_serdes,
2258 };
2259
2260 static const struct niu_phy_ops phy_ops_10g_serdes_niu = {
2261         .serdes_init            = serdes_init_niu_10g_serdes,
2262         .link_status            = link_status_10g_serdes,
2263 };
2264
2265 static const struct niu_phy_ops phy_ops_1g_serdes_niu = {
2266         .serdes_init            = serdes_init_niu_1g_serdes,
2267         .link_status            = link_status_1g_serdes,
2268 };
2269
2270 static const struct niu_phy_ops phy_ops_1g_rgmii = {
2271         .xcvr_init              = xcvr_init_1g_rgmii,
2272         .link_status            = link_status_1g_rgmii,
2273 };
2274
2275 static const struct niu_phy_ops phy_ops_10g_fiber_niu = {
2276         .serdes_init            = serdes_init_niu_10g_fiber,
2277         .xcvr_init              = xcvr_init_10g,
2278         .link_status            = link_status_10g,
2279 };
2280
2281 static const struct niu_phy_ops phy_ops_10g_fiber = {
2282         .serdes_init            = serdes_init_10g,
2283         .xcvr_init              = xcvr_init_10g,
2284         .link_status            = link_status_10g,
2285 };
2286
2287 static const struct niu_phy_ops phy_ops_10g_fiber_hotplug = {
2288         .serdes_init            = serdes_init_10g,
2289         .xcvr_init              = xcvr_init_10g_bcm8706,
2290         .link_status            = link_status_10g_hotplug,
2291 };
2292
2293 static const struct niu_phy_ops phy_ops_niu_10g_hotplug = {
2294         .serdes_init            = serdes_init_niu_10g_fiber,
2295         .xcvr_init              = xcvr_init_10g_bcm8706,
2296         .link_status            = link_status_10g_hotplug,
2297 };
2298
2299 static const struct niu_phy_ops phy_ops_10g_copper = {
2300         .serdes_init            = serdes_init_10g,
2301         .link_status            = link_status_10g, /* XXX */
2302 };
2303
2304 static const struct niu_phy_ops phy_ops_1g_fiber = {
2305         .serdes_init            = serdes_init_1g,
2306         .xcvr_init              = xcvr_init_1g,
2307         .link_status            = link_status_1g,
2308 };
2309
2310 static const struct niu_phy_ops phy_ops_1g_copper = {
2311         .xcvr_init              = xcvr_init_1g,
2312         .link_status            = link_status_1g,
2313 };
2314
2315 struct niu_phy_template {
2316         const struct niu_phy_ops        *ops;
2317         u32                             phy_addr_base;
2318 };
2319
2320 static const struct niu_phy_template phy_template_niu_10g_fiber = {
2321         .ops            = &phy_ops_10g_fiber_niu,
2322         .phy_addr_base  = 16,
2323 };
2324
2325 static const struct niu_phy_template phy_template_niu_10g_serdes = {
2326         .ops            = &phy_ops_10g_serdes_niu,
2327         .phy_addr_base  = 0,
2328 };
2329
2330 static const struct niu_phy_template phy_template_niu_1g_serdes = {
2331         .ops            = &phy_ops_1g_serdes_niu,
2332         .phy_addr_base  = 0,
2333 };
2334
2335 static const struct niu_phy_template phy_template_10g_fiber = {
2336         .ops            = &phy_ops_10g_fiber,
2337         .phy_addr_base  = 8,
2338 };
2339
2340 static const struct niu_phy_template phy_template_10g_fiber_hotplug = {
2341         .ops            = &phy_ops_10g_fiber_hotplug,
2342         .phy_addr_base  = 8,
2343 };
2344
2345 static const struct niu_phy_template phy_template_niu_10g_hotplug = {
2346         .ops            = &phy_ops_niu_10g_hotplug,
2347         .phy_addr_base  = 8,
2348 };
2349
2350 static const struct niu_phy_template phy_template_10g_copper = {
2351         .ops            = &phy_ops_10g_copper,
2352         .phy_addr_base  = 10,
2353 };
2354
2355 static const struct niu_phy_template phy_template_1g_fiber = {
2356         .ops            = &phy_ops_1g_fiber,
2357         .phy_addr_base  = 0,
2358 };
2359
2360 static const struct niu_phy_template phy_template_1g_copper = {
2361         .ops            = &phy_ops_1g_copper,
2362         .phy_addr_base  = 0,
2363 };
2364
2365 static const struct niu_phy_template phy_template_1g_rgmii = {
2366         .ops            = &phy_ops_1g_rgmii,
2367         .phy_addr_base  = 0,
2368 };
2369
2370 static const struct niu_phy_template phy_template_10g_serdes = {
2371         .ops            = &phy_ops_10g_serdes,
2372         .phy_addr_base  = 0,
2373 };
2374
2375 static int niu_atca_port_num[4] = {
2376         0, 0,  11, 10
2377 };
2378
2379 static int serdes_init_10g_serdes(struct niu *np)
2380 {
2381         struct niu_link_config *lp = &np->link_config;
2382         unsigned long ctrl_reg, test_cfg_reg, pll_cfg, i;
2383         u64 ctrl_val, test_cfg_val, sig, mask, val;
2384         u64 reset_val;
2385
2386         switch (np->port) {
2387         case 0:
2388                 reset_val =  ENET_SERDES_RESET_0;
2389                 ctrl_reg = ENET_SERDES_0_CTRL_CFG;
2390                 test_cfg_reg = ENET_SERDES_0_TEST_CFG;
2391                 pll_cfg = ENET_SERDES_0_PLL_CFG;
2392                 break;
2393         case 1:
2394                 reset_val =  ENET_SERDES_RESET_1;
2395                 ctrl_reg = ENET_SERDES_1_CTRL_CFG;
2396                 test_cfg_reg = ENET_SERDES_1_TEST_CFG;
2397                 pll_cfg = ENET_SERDES_1_PLL_CFG;
2398                 break;
2399
2400         default:
2401                 return -EINVAL;
2402         }
2403         ctrl_val = (ENET_SERDES_CTRL_SDET_0 |
2404                     ENET_SERDES_CTRL_SDET_1 |
2405                     ENET_SERDES_CTRL_SDET_2 |
2406                     ENET_SERDES_CTRL_SDET_3 |
2407                     (0x5 << ENET_SERDES_CTRL_EMPH_0_SHIFT) |
2408                     (0x5 << ENET_SERDES_CTRL_EMPH_1_SHIFT) |
2409                     (0x5 << ENET_SERDES_CTRL_EMPH_2_SHIFT) |
2410                     (0x5 << ENET_SERDES_CTRL_EMPH_3_SHIFT) |
2411                     (0x1 << ENET_SERDES_CTRL_LADJ_0_SHIFT) |
2412                     (0x1 << ENET_SERDES_CTRL_LADJ_1_SHIFT) |
2413                     (0x1 << ENET_SERDES_CTRL_LADJ_2_SHIFT) |
2414                     (0x1 << ENET_SERDES_CTRL_LADJ_3_SHIFT));
2415         test_cfg_val = 0;
2416
2417         if (lp->loopback_mode == LOOPBACK_PHY) {
2418                 test_cfg_val |= ((ENET_TEST_MD_PAD_LOOPBACK <<
2419                                   ENET_SERDES_TEST_MD_0_SHIFT) |
2420                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2421                                   ENET_SERDES_TEST_MD_1_SHIFT) |
2422                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2423                                   ENET_SERDES_TEST_MD_2_SHIFT) |
2424                                  (ENET_TEST_MD_PAD_LOOPBACK <<
2425                                   ENET_SERDES_TEST_MD_3_SHIFT));
2426         }
2427
2428         esr_reset(np);
2429         nw64(pll_cfg, ENET_SERDES_PLL_FBDIV2);
2430         nw64(ctrl_reg, ctrl_val);
2431         nw64(test_cfg_reg, test_cfg_val);
2432
2433         /* Initialize all 4 lanes of the SERDES.  */
2434         for (i = 0; i < 4; i++) {
2435                 u32 rxtx_ctrl, glue0;
2436                 int err;
2437
2438                 err = esr_read_rxtx_ctrl(np, i, &rxtx_ctrl);
2439                 if (err)
2440                         return err;
2441                 err = esr_read_glue0(np, i, &glue0);
2442                 if (err)
2443                         return err;
2444
2445                 rxtx_ctrl &= ~(ESR_RXTX_CTRL_VMUXLO);
2446                 rxtx_ctrl |= (ESR_RXTX_CTRL_ENSTRETCH |
2447                               (2 << ESR_RXTX_CTRL_VMUXLO_SHIFT));
2448
2449                 glue0 &= ~(ESR_GLUE_CTRL0_SRATE |
2450                            ESR_GLUE_CTRL0_THCNT |
2451                            ESR_GLUE_CTRL0_BLTIME);
2452                 glue0 |= (ESR_GLUE_CTRL0_RXLOSENAB |
2453                           (0xf << ESR_GLUE_CTRL0_SRATE_SHIFT) |
2454                           (0xff << ESR_GLUE_CTRL0_THCNT_SHIFT) |
2455                           (BLTIME_300_CYCLES <<
2456                            ESR_GLUE_CTRL0_BLTIME_SHIFT));
2457
2458                 err = esr_write_rxtx_ctrl(np, i, rxtx_ctrl);
2459                 if (err)
2460                         return err;
2461                 err = esr_write_glue0(np, i, glue0);
2462                 if (err)
2463                         return err;
2464         }
2465
2466
2467         sig = nr64(ESR_INT_SIGNALS);
2468         switch (np->port) {
2469         case 0:
2470                 mask = ESR_INT_SIGNALS_P0_BITS;
2471                 val = (ESR_INT_SRDY0_P0 |
2472                        ESR_INT_DET0_P0 |
2473                        ESR_INT_XSRDY_P0 |
2474                        ESR_INT_XDP_P0_CH3 |
2475                        ESR_INT_XDP_P0_CH2 |
2476                        ESR_INT_XDP_P0_CH1 |
2477                        ESR_INT_XDP_P0_CH0);
2478                 break;
2479
2480         case 1:
2481                 mask = ESR_INT_SIGNALS_P1_BITS;
2482                 val = (ESR_INT_SRDY0_P1 |
2483                        ESR_INT_DET0_P1 |
2484                        ESR_INT_XSRDY_P1 |
2485                        ESR_INT_XDP_P1_CH3 |
2486                        ESR_INT_XDP_P1_CH2 |
2487                        ESR_INT_XDP_P1_CH1 |
2488                        ESR_INT_XDP_P1_CH0);
2489                 break;
2490
2491         default:
2492                 return -EINVAL;
2493         }
2494
2495         if ((sig & mask) != val) {
2496                 int err;
2497                 err = serdes_init_1g_serdes(np);
2498                 if (!err) {
2499                         np->flags &= ~NIU_FLAGS_10G;
2500                         np->mac_xcvr = MAC_XCVR_PCS;
2501                 }  else {
2502                         netdev_err(np->dev, "Port %u 10G/1G SERDES Link Failed\n",
2503                                    np->port);
2504                         return -ENODEV;
2505                 }
2506         }
2507
2508         return 0;
2509 }
2510
2511 static int niu_determine_phy_disposition(struct niu *np)
2512 {
2513         struct niu_parent *parent = np->parent;
2514         u8 plat_type = parent->plat_type;
2515         const struct niu_phy_template *tp;
2516         u32 phy_addr_off = 0;
2517
2518         if (plat_type == PLAT_TYPE_NIU) {
2519                 switch (np->flags &
2520                         (NIU_FLAGS_10G |
2521                          NIU_FLAGS_FIBER |
2522                          NIU_FLAGS_XCVR_SERDES)) {
2523                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2524                         /* 10G Serdes */
2525                         tp = &phy_template_niu_10g_serdes;
2526                         break;
2527                 case NIU_FLAGS_XCVR_SERDES:
2528                         /* 1G Serdes */
2529                         tp = &phy_template_niu_1g_serdes;
2530                         break;
2531                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2532                         /* 10G Fiber */
2533                 default:
2534                         if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2535                                 tp = &phy_template_niu_10g_hotplug;
2536                                 if (np->port == 0)
2537                                         phy_addr_off = 8;
2538                                 if (np->port == 1)
2539                                         phy_addr_off = 12;
2540                         } else {
2541                                 tp = &phy_template_niu_10g_fiber;
2542                                 phy_addr_off += np->port;
2543                         }
2544                         break;
2545                 }
2546         } else {
2547                 switch (np->flags &
2548                         (NIU_FLAGS_10G |
2549                          NIU_FLAGS_FIBER |
2550                          NIU_FLAGS_XCVR_SERDES)) {
2551                 case 0:
2552                         /* 1G copper */
2553                         tp = &phy_template_1g_copper;
2554                         if (plat_type == PLAT_TYPE_VF_P0)
2555                                 phy_addr_off = 10;
2556                         else if (plat_type == PLAT_TYPE_VF_P1)
2557                                 phy_addr_off = 26;
2558
2559                         phy_addr_off += (np->port ^ 0x3);
2560                         break;
2561
2562                 case NIU_FLAGS_10G:
2563                         /* 10G copper */
2564                         tp = &phy_template_10g_copper;
2565                         break;
2566
2567                 case NIU_FLAGS_FIBER:
2568                         /* 1G fiber */
2569                         tp = &phy_template_1g_fiber;
2570                         break;
2571
2572                 case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
2573                         /* 10G fiber */
2574                         tp = &phy_template_10g_fiber;
2575                         if (plat_type == PLAT_TYPE_VF_P0 ||
2576                             plat_type == PLAT_TYPE_VF_P1)
2577                                 phy_addr_off = 8;
2578                         phy_addr_off += np->port;
2579                         if (np->flags & NIU_FLAGS_HOTPLUG_PHY) {
2580                                 tp = &phy_template_10g_fiber_hotplug;
2581                                 if (np->port == 0)
2582                                         phy_addr_off = 8;
2583                                 if (np->port == 1)
2584                                         phy_addr_off = 12;
2585                         }
2586                         break;
2587
2588                 case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
2589                 case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
2590                 case NIU_FLAGS_XCVR_SERDES:
2591                         switch(np->port) {
2592                         case 0:
2593                         case 1:
2594                                 tp = &phy_template_10g_serdes;
2595                                 break;
2596                         case 2:
2597                         case 3:
2598                                 tp = &phy_template_1g_rgmii;
2599                                 break;
2600                         default:
2601                                 return -EINVAL;
2602                                 break;
2603                         }
2604                         phy_addr_off = niu_atca_port_num[np->port];
2605                         break;
2606
2607                 default:
2608                         return -EINVAL;
2609                 }
2610         }
2611
2612         np->phy_ops = tp->ops;
2613         np->phy_addr = tp->phy_addr_base + phy_addr_off;
2614
2615         return 0;
2616 }
2617
2618 static int niu_init_link(struct niu *np)
2619 {
2620         struct niu_parent *parent = np->parent;
2621         int err, ignore;
2622
2623         if (parent->plat_type == PLAT_TYPE_NIU) {
2624                 err = niu_xcvr_init(np);
2625                 if (err)
2626                         return err;
2627                 msleep(200);
2628         }
2629         err = niu_serdes_init(np);
2630         if (err && !(np->flags & NIU_FLAGS_HOTPLUG_PHY))
2631                 return err;
2632         msleep(200);
2633         err = niu_xcvr_init(np);
2634         if (!err || (np->flags & NIU_FLAGS_HOTPLUG_PHY))
2635                 niu_link_status(np, &ignore);
2636         return 0;
2637 }
2638
2639 static void niu_set_primary_mac(struct niu *np, unsigned char *addr)
2640 {
2641         u16 reg0 = addr[4] << 8 | addr[5];
2642         u16 reg1 = addr[2] << 8 | addr[3];
2643         u16 reg2 = addr[0] << 8 | addr[1];
2644
2645         if (np->flags & NIU_FLAGS_XMAC) {
2646                 nw64_mac(XMAC_ADDR0, reg0);
2647                 nw64_mac(XMAC_ADDR1, reg1);
2648                 nw64_mac(XMAC_ADDR2, reg2);
2649         } else {
2650                 nw64_mac(BMAC_ADDR0, reg0);
2651                 nw64_mac(BMAC_ADDR1, reg1);
2652                 nw64_mac(BMAC_ADDR2, reg2);
2653         }
2654 }
2655
2656 static int niu_num_alt_addr(struct niu *np)
2657 {
2658         if (np->flags & NIU_FLAGS_XMAC)
2659                 return XMAC_NUM_ALT_ADDR;
2660         else
2661                 return BMAC_NUM_ALT_ADDR;
2662 }
2663
2664 static int niu_set_alt_mac(struct niu *np, int index, unsigned char *addr)
2665 {
2666         u16 reg0 = addr[4] << 8 | addr[5];
2667         u16 reg1 = addr[2] << 8 | addr[3];
2668         u16 reg2 = addr[0] << 8 | addr[1];
2669
2670         if (index >= niu_num_alt_addr(np))
2671                 return -EINVAL;
2672
2673         if (np->flags & NIU_FLAGS_XMAC) {
2674                 nw64_mac(XMAC_ALT_ADDR0(index), reg0);
2675                 nw64_mac(XMAC_ALT_ADDR1(index), reg1);
2676                 nw64_mac(XMAC_ALT_ADDR2(index), reg2);
2677         } else {
2678                 nw64_mac(BMAC_ALT_ADDR0(index), reg0);
2679                 nw64_mac(BMAC_ALT_ADDR1(index), reg1);
2680                 nw64_mac(BMAC_ALT_ADDR2(index), reg2);
2681         }
2682
2683         return 0;
2684 }
2685
2686 static int niu_enable_alt_mac(struct niu *np, int index, int on)
2687 {
2688         unsigned long reg;
2689         u64 val, mask;
2690
2691         if (index >= niu_num_alt_addr(np))
2692                 return -EINVAL;
2693
2694         if (np->flags & NIU_FLAGS_XMAC) {
2695                 reg = XMAC_ADDR_CMPEN;
2696                 mask = 1 << index;
2697         } else {
2698                 reg = BMAC_ADDR_CMPEN;
2699                 mask = 1 << (index + 1);
2700         }
2701
2702         val = nr64_mac(reg);
2703         if (on)
2704                 val |= mask;
2705         else
2706                 val &= ~mask;
2707         nw64_mac(reg, val);
2708
2709         return 0;
2710 }
2711
2712 static void __set_rdc_table_num_hw(struct niu *np, unsigned long reg,
2713                                    int num, int mac_pref)
2714 {
2715         u64 val = nr64_mac(reg);
2716         val &= ~(HOST_INFO_MACRDCTBLN | HOST_INFO_MPR);
2717         val |= num;
2718         if (mac_pref)
2719                 val |= HOST_INFO_MPR;
2720         nw64_mac(reg, val);
2721 }
2722
2723 static int __set_rdc_table_num(struct niu *np,
2724                                int xmac_index, int bmac_index,
2725                                int rdc_table_num, int mac_pref)
2726 {
2727         unsigned long reg;
2728
2729         if (rdc_table_num & ~HOST_INFO_MACRDCTBLN)
2730                 return -EINVAL;
2731         if (np->flags & NIU_FLAGS_XMAC)
2732                 reg = XMAC_HOST_INFO(xmac_index);
2733         else
2734                 reg = BMAC_HOST_INFO(bmac_index);
2735         __set_rdc_table_num_hw(np, reg, rdc_table_num, mac_pref);
2736         return 0;
2737 }
2738
2739 static int niu_set_primary_mac_rdc_table(struct niu *np, int table_num,
2740                                          int mac_pref)
2741 {
2742         return __set_rdc_table_num(np, 17, 0, table_num, mac_pref);
2743 }
2744
2745 static int niu_set_multicast_mac_rdc_table(struct niu *np, int table_num,
2746                                            int mac_pref)
2747 {
2748         return __set_rdc_table_num(np, 16, 8, table_num, mac_pref);
2749 }
2750
2751 static int niu_set_alt_mac_rdc_table(struct niu *np, int idx,
2752                                      int table_num, int mac_pref)
2753 {
2754         if (idx >= niu_num_alt_addr(np))
2755                 return -EINVAL;
2756         return __set_rdc_table_num(np, idx, idx + 1, table_num, mac_pref);
2757 }
2758
2759 static u64 vlan_entry_set_parity(u64 reg_val)
2760 {
2761         u64 port01_mask;
2762         u64 port23_mask;
2763
2764         port01_mask = 0x00ff;
2765         port23_mask = 0xff00;
2766
2767         if (hweight64(reg_val & port01_mask) & 1)
2768                 reg_val |= ENET_VLAN_TBL_PARITY0;
2769         else
2770                 reg_val &= ~ENET_VLAN_TBL_PARITY0;
2771
2772         if (hweight64(reg_val & port23_mask) & 1)
2773                 reg_val |= ENET_VLAN_TBL_PARITY1;
2774         else
2775                 reg_val &= ~ENET_VLAN_TBL_PARITY1;
2776
2777         return reg_val;
2778 }
2779
2780 static void vlan_tbl_write(struct niu *np, unsigned long index,
2781                            int port, int vpr, int rdc_table)
2782 {
2783         u64 reg_val = nr64(ENET_VLAN_TBL(index));
2784
2785         reg_val &= ~((ENET_VLAN_TBL_VPR |
2786                       ENET_VLAN_TBL_VLANRDCTBLN) <<
2787                      ENET_VLAN_TBL_SHIFT(port));
2788         if (vpr)
2789                 reg_val |= (ENET_VLAN_TBL_VPR <<
2790                             ENET_VLAN_TBL_SHIFT(port));
2791         reg_val |= (rdc_table << ENET_VLAN_TBL_SHIFT(port));
2792
2793         reg_val = vlan_entry_set_parity(reg_val);
2794
2795         nw64(ENET_VLAN_TBL(index), reg_val);
2796 }
2797
2798 static void vlan_tbl_clear(struct niu *np)
2799 {
2800         int i;
2801
2802         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++)
2803                 nw64(ENET_VLAN_TBL(i), 0);
2804 }
2805
2806 static int tcam_wait_bit(struct niu *np, u64 bit)
2807 {
2808         int limit = 1000;
2809
2810         while (--limit > 0) {
2811                 if (nr64(TCAM_CTL) & bit)
2812                         break;
2813                 udelay(1);
2814         }
2815         if (limit <= 0)
2816                 return -ENODEV;
2817
2818         return 0;
2819 }
2820
2821 static int tcam_flush(struct niu *np, int index)
2822 {
2823         nw64(TCAM_KEY_0, 0x00);
2824         nw64(TCAM_KEY_MASK_0, 0xff);
2825         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2826
2827         return tcam_wait_bit(np, TCAM_CTL_STAT);
2828 }
2829
2830 #if 0
2831 static int tcam_read(struct niu *np, int index,
2832                      u64 *key, u64 *mask)
2833 {
2834         int err;
2835
2836         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_READ | index));
2837         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2838         if (!err) {
2839                 key[0] = nr64(TCAM_KEY_0);
2840                 key[1] = nr64(TCAM_KEY_1);
2841                 key[2] = nr64(TCAM_KEY_2);
2842                 key[3] = nr64(TCAM_KEY_3);
2843                 mask[0] = nr64(TCAM_KEY_MASK_0);
2844                 mask[1] = nr64(TCAM_KEY_MASK_1);
2845                 mask[2] = nr64(TCAM_KEY_MASK_2);
2846                 mask[3] = nr64(TCAM_KEY_MASK_3);
2847         }
2848         return err;
2849 }
2850 #endif
2851
2852 static int tcam_write(struct niu *np, int index,
2853                       u64 *key, u64 *mask)
2854 {
2855         nw64(TCAM_KEY_0, key[0]);
2856         nw64(TCAM_KEY_1, key[1]);
2857         nw64(TCAM_KEY_2, key[2]);
2858         nw64(TCAM_KEY_3, key[3]);
2859         nw64(TCAM_KEY_MASK_0, mask[0]);
2860         nw64(TCAM_KEY_MASK_1, mask[1]);
2861         nw64(TCAM_KEY_MASK_2, mask[2]);
2862         nw64(TCAM_KEY_MASK_3, mask[3]);
2863         nw64(TCAM_CTL, (TCAM_CTL_RWC_TCAM_WRITE | index));
2864
2865         return tcam_wait_bit(np, TCAM_CTL_STAT);
2866 }
2867
2868 #if 0
2869 static int tcam_assoc_read(struct niu *np, int index, u64 *data)
2870 {
2871         int err;
2872
2873         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_READ | index));
2874         err = tcam_wait_bit(np, TCAM_CTL_STAT);
2875         if (!err)
2876                 *data = nr64(TCAM_KEY_1);
2877
2878         return err;
2879 }
2880 #endif
2881
2882 static int tcam_assoc_write(struct niu *np, int index, u64 assoc_data)
2883 {
2884         nw64(TCAM_KEY_1, assoc_data);
2885         nw64(TCAM_CTL, (TCAM_CTL_RWC_RAM_WRITE | index));
2886
2887         return tcam_wait_bit(np, TCAM_CTL_STAT);
2888 }
2889
2890 static void tcam_enable(struct niu *np, int on)
2891 {
2892         u64 val = nr64(FFLP_CFG_1);
2893
2894         if (on)
2895                 val &= ~FFLP_CFG_1_TCAM_DIS;
2896         else
2897                 val |= FFLP_CFG_1_TCAM_DIS;
2898         nw64(FFLP_CFG_1, val);
2899 }
2900
2901 static void tcam_set_lat_and_ratio(struct niu *np, u64 latency, u64 ratio)
2902 {
2903         u64 val = nr64(FFLP_CFG_1);
2904
2905         val &= ~(FFLP_CFG_1_FFLPINITDONE |
2906                  FFLP_CFG_1_CAMLAT |
2907                  FFLP_CFG_1_CAMRATIO);
2908         val |= (latency << FFLP_CFG_1_CAMLAT_SHIFT);
2909         val |= (ratio << FFLP_CFG_1_CAMRATIO_SHIFT);
2910         nw64(FFLP_CFG_1, val);
2911
2912         val = nr64(FFLP_CFG_1);
2913         val |= FFLP_CFG_1_FFLPINITDONE;
2914         nw64(FFLP_CFG_1, val);
2915 }
2916
2917 static int tcam_user_eth_class_enable(struct niu *np, unsigned long class,
2918                                       int on)
2919 {
2920         unsigned long reg;
2921         u64 val;
2922
2923         if (class < CLASS_CODE_ETHERTYPE1 ||
2924             class > CLASS_CODE_ETHERTYPE2)
2925                 return -EINVAL;
2926
2927         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2928         val = nr64(reg);
2929         if (on)
2930                 val |= L2_CLS_VLD;
2931         else
2932                 val &= ~L2_CLS_VLD;
2933         nw64(reg, val);
2934
2935         return 0;
2936 }
2937
2938 #if 0
2939 static int tcam_user_eth_class_set(struct niu *np, unsigned long class,
2940                                    u64 ether_type)
2941 {
2942         unsigned long reg;
2943         u64 val;
2944
2945         if (class < CLASS_CODE_ETHERTYPE1 ||
2946             class > CLASS_CODE_ETHERTYPE2 ||
2947             (ether_type & ~(u64)0xffff) != 0)
2948                 return -EINVAL;
2949
2950         reg = L2_CLS(class - CLASS_CODE_ETHERTYPE1);
2951         val = nr64(reg);
2952         val &= ~L2_CLS_ETYPE;
2953         val |= (ether_type << L2_CLS_ETYPE_SHIFT);
2954         nw64(reg, val);
2955
2956         return 0;
2957 }
2958 #endif
2959
2960 static int tcam_user_ip_class_enable(struct niu *np, unsigned long class,
2961                                      int on)
2962 {
2963         unsigned long reg;
2964         u64 val;
2965
2966         if (class < CLASS_CODE_USER_PROG1 ||
2967             class > CLASS_CODE_USER_PROG4)
2968                 return -EINVAL;
2969
2970         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2971         val = nr64(reg);
2972         if (on)
2973                 val |= L3_CLS_VALID;
2974         else
2975                 val &= ~L3_CLS_VALID;
2976         nw64(reg, val);
2977
2978         return 0;
2979 }
2980
2981 static int tcam_user_ip_class_set(struct niu *np, unsigned long class,
2982                                   int ipv6, u64 protocol_id,
2983                                   u64 tos_mask, u64 tos_val)
2984 {
2985         unsigned long reg;
2986         u64 val;
2987
2988         if (class < CLASS_CODE_USER_PROG1 ||
2989             class > CLASS_CODE_USER_PROG4 ||
2990             (protocol_id & ~(u64)0xff) != 0 ||
2991             (tos_mask & ~(u64)0xff) != 0 ||
2992             (tos_val & ~(u64)0xff) != 0)
2993                 return -EINVAL;
2994
2995         reg = L3_CLS(class - CLASS_CODE_USER_PROG1);
2996         val = nr64(reg);
2997         val &= ~(L3_CLS_IPVER | L3_CLS_PID |
2998                  L3_CLS_TOSMASK | L3_CLS_TOS);
2999         if (ipv6)
3000                 val |= L3_CLS_IPVER;
3001         val |= (protocol_id << L3_CLS_PID_SHIFT);
3002         val |= (tos_mask << L3_CLS_TOSMASK_SHIFT);
3003         val |= (tos_val << L3_CLS_TOS_SHIFT);
3004         nw64(reg, val);
3005
3006         return 0;
3007 }
3008
3009 static int tcam_early_init(struct niu *np)
3010 {
3011         unsigned long i;
3012         int err;
3013
3014         tcam_enable(np, 0);
3015         tcam_set_lat_and_ratio(np,
3016                                DEFAULT_TCAM_LATENCY,
3017                                DEFAULT_TCAM_ACCESS_RATIO);
3018         for (i = CLASS_CODE_ETHERTYPE1; i <= CLASS_CODE_ETHERTYPE2; i++) {
3019                 err = tcam_user_eth_class_enable(np, i, 0);
3020                 if (err)
3021                         return err;
3022         }
3023         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_USER_PROG4; i++) {
3024                 err = tcam_user_ip_class_enable(np, i, 0);
3025                 if (err)
3026                         return err;
3027         }
3028
3029         return 0;
3030 }
3031
3032 static int tcam_flush_all(struct niu *np)
3033 {
3034         unsigned long i;
3035
3036         for (i = 0; i < np->parent->tcam_num_entries; i++) {
3037                 int err = tcam_flush(np, i);
3038                 if (err)
3039                         return err;
3040         }
3041         return 0;
3042 }
3043
3044 static u64 hash_addr_regval(unsigned long index, unsigned long num_entries)
3045 {
3046         return (u64)index | (num_entries == 1 ? HASH_TBL_ADDR_AUTOINC : 0);
3047 }
3048
3049 #if 0
3050 static int hash_read(struct niu *np, unsigned long partition,
3051                      unsigned long index, unsigned long num_entries,
3052                      u64 *data)
3053 {
3054         u64 val = hash_addr_regval(index, num_entries);
3055         unsigned long i;
3056
3057         if (partition >= FCRAM_NUM_PARTITIONS ||
3058             index + num_entries > FCRAM_SIZE)
3059                 return -EINVAL;
3060
3061         nw64(HASH_TBL_ADDR(partition), val);
3062         for (i = 0; i < num_entries; i++)
3063                 data[i] = nr64(HASH_TBL_DATA(partition));
3064
3065         return 0;
3066 }
3067 #endif
3068
3069 static int hash_write(struct niu *np, unsigned long partition,
3070                       unsigned long index, unsigned long num_entries,
3071                       u64 *data)
3072 {
3073         u64 val = hash_addr_regval(index, num_entries);
3074         unsigned long i;
3075
3076         if (partition >= FCRAM_NUM_PARTITIONS ||
3077             index + (num_entries * 8) > FCRAM_SIZE)
3078                 return -EINVAL;
3079
3080         nw64(HASH_TBL_ADDR(partition), val);
3081         for (i = 0; i < num_entries; i++)
3082                 nw64(HASH_TBL_DATA(partition), data[i]);
3083
3084         return 0;
3085 }
3086
3087 static void fflp_reset(struct niu *np)
3088 {
3089         u64 val;
3090
3091         nw64(FFLP_CFG_1, FFLP_CFG_1_PIO_FIO_RST);
3092         udelay(10);
3093         nw64(FFLP_CFG_1, 0);
3094
3095         val = FFLP_CFG_1_FCRAMOUTDR_NORMAL | FFLP_CFG_1_FFLPINITDONE;
3096         nw64(FFLP_CFG_1, val);
3097 }
3098
3099 static void fflp_set_timings(struct niu *np)
3100 {
3101         u64 val = nr64(FFLP_CFG_1);
3102
3103         val &= ~FFLP_CFG_1_FFLPINITDONE;
3104         val |= (DEFAULT_FCRAMRATIO << FFLP_CFG_1_FCRAMRATIO_SHIFT);
3105         nw64(FFLP_CFG_1, val);
3106
3107         val = nr64(FFLP_CFG_1);
3108         val |= FFLP_CFG_1_FFLPINITDONE;
3109         nw64(FFLP_CFG_1, val);
3110
3111         val = nr64(FCRAM_REF_TMR);
3112         val &= ~(FCRAM_REF_TMR_MAX | FCRAM_REF_TMR_MIN);
3113         val |= (DEFAULT_FCRAM_REFRESH_MAX << FCRAM_REF_TMR_MAX_SHIFT);
3114         val |= (DEFAULT_FCRAM_REFRESH_MIN << FCRAM_REF_TMR_MIN_SHIFT);
3115         nw64(FCRAM_REF_TMR, val);
3116 }
3117
3118 static int fflp_set_partition(struct niu *np, u64 partition,
3119                               u64 mask, u64 base, int enable)
3120 {
3121         unsigned long reg;
3122         u64 val;
3123
3124         if (partition >= FCRAM_NUM_PARTITIONS ||
3125             (mask & ~(u64)0x1f) != 0 ||
3126             (base & ~(u64)0x1f) != 0)
3127                 return -EINVAL;
3128
3129         reg = FLW_PRT_SEL(partition);
3130
3131         val = nr64(reg);
3132         val &= ~(FLW_PRT_SEL_EXT | FLW_PRT_SEL_MASK | FLW_PRT_SEL_BASE);
3133         val |= (mask << FLW_PRT_SEL_MASK_SHIFT);
3134         val |= (base << FLW_PRT_SEL_BASE_SHIFT);
3135         if (enable)
3136                 val |= FLW_PRT_SEL_EXT;
3137         nw64(reg, val);
3138
3139         return 0;
3140 }
3141
3142 static int fflp_disable_all_partitions(struct niu *np)
3143 {
3144         unsigned long i;
3145
3146         for (i = 0; i < FCRAM_NUM_PARTITIONS; i++) {
3147                 int err = fflp_set_partition(np, 0, 0, 0, 0);
3148                 if (err)
3149                         return err;
3150         }
3151         return 0;
3152 }
3153
3154 static void fflp_llcsnap_enable(struct niu *np, int on)
3155 {
3156         u64 val = nr64(FFLP_CFG_1);
3157
3158         if (on)
3159                 val |= FFLP_CFG_1_LLCSNAP;
3160         else
3161                 val &= ~FFLP_CFG_1_LLCSNAP;
3162         nw64(FFLP_CFG_1, val);
3163 }
3164
3165 static void fflp_errors_enable(struct niu *np, int on)
3166 {
3167         u64 val = nr64(FFLP_CFG_1);
3168
3169         if (on)
3170                 val &= ~FFLP_CFG_1_ERRORDIS;
3171         else
3172                 val |= FFLP_CFG_1_ERRORDIS;
3173         nw64(FFLP_CFG_1, val);
3174 }
3175
3176 static int fflp_hash_clear(struct niu *np)
3177 {
3178         struct fcram_hash_ipv4 ent;
3179         unsigned long i;
3180
3181         /* IPV4 hash entry with valid bit clear, rest is don't care.  */
3182         memset(&ent, 0, sizeof(ent));
3183         ent.header = HASH_HEADER_EXT;
3184
3185         for (i = 0; i < FCRAM_SIZE; i += sizeof(ent)) {
3186                 int err = hash_write(np, 0, i, 1, (u64 *) &ent);
3187                 if (err)
3188                         return err;
3189         }
3190         return 0;
3191 }
3192
3193 static int fflp_early_init(struct niu *np)
3194 {
3195         struct niu_parent *parent;
3196         unsigned long flags;
3197         int err;
3198
3199         niu_lock_parent(np, flags);
3200
3201         parent = np->parent;
3202         err = 0;
3203         if (!(parent->flags & PARENT_FLGS_CLS_HWINIT)) {
3204                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3205                         fflp_reset(np);
3206                         fflp_set_timings(np);
3207                         err = fflp_disable_all_partitions(np);
3208                         if (err) {
3209                                 netif_printk(np, probe, KERN_DEBUG, np->dev,
3210                                              "fflp_disable_all_partitions failed, err=%d\n",
3211                                              err);
3212                                 goto out;
3213                         }
3214                 }
3215
3216                 err = tcam_early_init(np);
3217                 if (err) {
3218                         netif_printk(np, probe, KERN_DEBUG, np->dev,
3219                                      "tcam_early_init failed, err=%d\n", err);
3220                         goto out;
3221                 }
3222                 fflp_llcsnap_enable(np, 1);
3223                 fflp_errors_enable(np, 0);
3224                 nw64(H1POLY, 0);
3225                 nw64(H2POLY, 0);
3226
3227                 err = tcam_flush_all(np);
3228                 if (err) {
3229                         netif_printk(np, probe, KERN_DEBUG, np->dev,
3230                                      "tcam_flush_all failed, err=%d\n", err);
3231                         goto out;
3232                 }
3233                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
3234                         err = fflp_hash_clear(np);
3235                         if (err) {
3236                                 netif_printk(np, probe, KERN_DEBUG, np->dev,
3237                                              "fflp_hash_clear failed, err=%d\n",
3238                                              err);
3239                                 goto out;
3240                         }
3241                 }
3242
3243                 vlan_tbl_clear(np);
3244
3245                 parent->flags |= PARENT_FLGS_CLS_HWINIT;
3246         }
3247 out:
3248         niu_unlock_parent(np, flags);
3249         return err;
3250 }
3251
3252 static int niu_set_flow_key(struct niu *np, unsigned long class_code, u64 key)
3253 {
3254         if (class_code < CLASS_CODE_USER_PROG1 ||
3255             class_code > CLASS_CODE_SCTP_IPV6)
3256                 return -EINVAL;
3257
3258         nw64(FLOW_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3259         return 0;
3260 }
3261
3262 static int niu_set_tcam_key(struct niu *np, unsigned long class_code, u64 key)
3263 {
3264         if (class_code < CLASS_CODE_USER_PROG1 ||
3265             class_code > CLASS_CODE_SCTP_IPV6)
3266                 return -EINVAL;
3267
3268         nw64(TCAM_KEY(class_code - CLASS_CODE_USER_PROG1), key);
3269         return 0;
3270 }
3271
3272 /* Entries for the ports are interleaved in the TCAM */
3273 static u16 tcam_get_index(struct niu *np, u16 idx)
3274 {
3275         /* One entry reserved for IP fragment rule */
3276         if (idx >= (np->clas.tcam_sz - 1))
3277                 idx = 0;
3278         return np->clas.tcam_top + ((idx+1) * np->parent->num_ports);
3279 }
3280
3281 static u16 tcam_get_size(struct niu *np)
3282 {
3283         /* One entry reserved for IP fragment rule */
3284         return np->clas.tcam_sz - 1;
3285 }
3286
3287 static u16 tcam_get_valid_entry_cnt(struct niu *np)
3288 {
3289         /* One entry reserved for IP fragment rule */
3290         return np->clas.tcam_valid_entries - 1;
3291 }
3292
3293 static void niu_rx_skb_append(struct sk_buff *skb, struct page *page,
3294                               u32 offset, u32 size)
3295 {
3296         int i = skb_shinfo(skb)->nr_frags;
3297         skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
3298
3299         frag->page = page;
3300         frag->page_offset = offset;
3301         frag->size = size;
3302
3303         skb->len += size;
3304         skb->data_len += size;
3305         skb->truesize += size;
3306
3307         skb_shinfo(skb)->nr_frags = i + 1;
3308 }
3309
3310 static unsigned int niu_hash_rxaddr(struct rx_ring_info *rp, u64 a)
3311 {
3312         a >>= PAGE_SHIFT;
3313         a ^= (a >> ilog2(MAX_RBR_RING_SIZE));
3314
3315         return a & (MAX_RBR_RING_SIZE - 1);
3316 }
3317
3318 static struct page *niu_find_rxpage(struct rx_ring_info *rp, u64 addr,
3319                                     struct page ***link)
3320 {
3321         unsigned int h = niu_hash_rxaddr(rp, addr);
3322         struct page *p, **pp;
3323
3324         addr &= PAGE_MASK;
3325         pp = &rp->rxhash[h];
3326         for (; (p = *pp) != NULL; pp = (struct page **) &p->mapping) {
3327                 if (p->index == addr) {
3328                         *link = pp;
3329                         goto found;
3330                 }
3331         }
3332         BUG();
3333
3334 found:
3335         return p;
3336 }
3337
3338 static void niu_hash_page(struct rx_ring_info *rp, struct page *page, u64 base)
3339 {
3340         unsigned int h = niu_hash_rxaddr(rp, base);
3341
3342         page->index = base;
3343         page->mapping = (struct address_space *) rp->rxhash[h];
3344         rp->rxhash[h] = page;
3345 }
3346
3347 static int niu_rbr_add_page(struct niu *np, struct rx_ring_info *rp,
3348                             gfp_t mask, int start_index)
3349 {
3350         struct page *page;
3351         u64 addr;
3352         int i;
3353
3354         page = alloc_page(mask);
3355         if (!page)
3356                 return -ENOMEM;
3357
3358         addr = np->ops->map_page(np->device, page, 0,
3359                                  PAGE_SIZE, DMA_FROM_DEVICE);
3360
3361         niu_hash_page(rp, page, addr);
3362         if (rp->rbr_blocks_per_page > 1)
3363                 atomic_add(rp->rbr_blocks_per_page - 1,
3364                            &compound_head(page)->_count);
3365
3366         for (i = 0; i < rp->rbr_blocks_per_page; i++) {
3367                 __le32 *rbr = &rp->rbr[start_index + i];
3368
3369                 *rbr = cpu_to_le32(addr >> RBR_DESCR_ADDR_SHIFT);
3370                 addr += rp->rbr_block_size;
3371         }
3372
3373         return 0;
3374 }
3375
3376 static void niu_rbr_refill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3377 {
3378         int index = rp->rbr_index;
3379
3380         rp->rbr_pending++;
3381         if ((rp->rbr_pending % rp->rbr_blocks_per_page) == 0) {
3382                 int err = niu_rbr_add_page(np, rp, mask, index);
3383
3384                 if (unlikely(err)) {
3385                         rp->rbr_pending--;
3386                         return;
3387                 }
3388
3389                 rp->rbr_index += rp->rbr_blocks_per_page;
3390                 BUG_ON(rp->rbr_index > rp->rbr_table_size);
3391                 if (rp->rbr_index == rp->rbr_table_size)
3392                         rp->rbr_index = 0;
3393
3394                 if (rp->rbr_pending >= rp->rbr_kick_thresh) {
3395                         nw64(RBR_KICK(rp->rx_channel), rp->rbr_pending);
3396                         rp->rbr_pending = 0;
3397                 }
3398         }
3399 }
3400
3401 static int niu_rx_pkt_ignore(struct niu *np, struct rx_ring_info *rp)
3402 {
3403         unsigned int index = rp->rcr_index;
3404         int num_rcr = 0;
3405
3406         rp->rx_dropped++;
3407         while (1) {
3408                 struct page *page, **link;
3409                 u64 addr, val;
3410                 u32 rcr_size;
3411
3412                 num_rcr++;
3413
3414                 val = le64_to_cpup(&rp->rcr[index]);
3415                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3416                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3417                 page = niu_find_rxpage(rp, addr, &link);
3418
3419                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3420                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3421                 if ((page->index + PAGE_SIZE) - rcr_size == addr) {
3422                         *link = (struct page *) page->mapping;
3423                         np->ops->unmap_page(np->device, page->index,
3424                                             PAGE_SIZE, DMA_FROM_DEVICE);
3425                         page->index = 0;
3426                         page->mapping = NULL;
3427                         __free_page(page);
3428                         rp->rbr_refill_pending++;
3429                 }
3430
3431                 index = NEXT_RCR(rp, index);
3432                 if (!(val & RCR_ENTRY_MULTI))
3433                         break;
3434
3435         }
3436         rp->rcr_index = index;
3437
3438         return num_rcr;
3439 }
3440
3441 static int niu_process_rx_pkt(struct napi_struct *napi, struct niu *np,
3442                               struct rx_ring_info *rp)
3443 {
3444         unsigned int index = rp->rcr_index;
3445         struct rx_pkt_hdr1 *rh;
3446         struct sk_buff *skb;
3447         int len, num_rcr;
3448
3449         skb = netdev_alloc_skb(np->dev, RX_SKB_ALLOC_SIZE);
3450         if (unlikely(!skb))
3451                 return niu_rx_pkt_ignore(np, rp);
3452
3453         num_rcr = 0;
3454         while (1) {
3455                 struct page *page, **link;
3456                 u32 rcr_size, append_size;
3457                 u64 addr, val, off;
3458
3459                 num_rcr++;
3460
3461                 val = le64_to_cpup(&rp->rcr[index]);
3462
3463                 len = (val & RCR_ENTRY_L2_LEN) >>
3464                         RCR_ENTRY_L2_LEN_SHIFT;
3465                 len -= ETH_FCS_LEN;
3466
3467                 addr = (val & RCR_ENTRY_PKT_BUF_ADDR) <<
3468                         RCR_ENTRY_PKT_BUF_ADDR_SHIFT;
3469                 page = niu_find_rxpage(rp, addr, &link);
3470
3471                 rcr_size = rp->rbr_sizes[(val & RCR_ENTRY_PKTBUFSZ) >>
3472                                          RCR_ENTRY_PKTBUFSZ_SHIFT];
3473
3474                 off = addr & ~PAGE_MASK;
3475                 append_size = rcr_size;
3476                 if (num_rcr == 1) {
3477                         int ptype;
3478
3479                         ptype = (val >> RCR_ENTRY_PKT_TYPE_SHIFT);
3480                         if ((ptype == RCR_PKT_TYPE_TCP ||
3481                              ptype == RCR_PKT_TYPE_UDP) &&
3482                             !(val & (RCR_ENTRY_NOPORT |
3483                                      RCR_ENTRY_ERROR)))
3484                                 skb->ip_summed = CHECKSUM_UNNECESSARY;
3485                         else
3486                                 skb_checksum_none_assert(skb);
3487                 } else if (!(val & RCR_ENTRY_MULTI))
3488                         append_size = len - skb->len;
3489
3490                 niu_rx_skb_append(skb, page, off, append_size);
3491                 if ((page->index + rp->rbr_block_size) - rcr_size == addr) {
3492                         *link = (struct page *) page->mapping;
3493                         np->ops->unmap_page(np->device, page->index,
3494                                             PAGE_SIZE, DMA_FROM_DEVICE);
3495                         page->index = 0;
3496                         page->mapping = NULL;
3497                         rp->rbr_refill_pending++;
3498                 } else
3499                         get_page(page);
3500
3501                 index = NEXT_RCR(rp, index);
3502                 if (!(val & RCR_ENTRY_MULTI))
3503                         break;
3504
3505         }
3506         rp->rcr_index = index;
3507
3508         len += sizeof(*rh);
3509         len = min_t(int, len, sizeof(*rh) + VLAN_ETH_HLEN);
3510         __pskb_pull_tail(skb, len);
3511
3512         rh = (struct rx_pkt_hdr1 *) skb->data;
3513         if (np->dev->features & NETIF_F_RXHASH)
3514                 skb->rxhash = ((u32)rh->hashval2_0 << 24 |
3515                                (u32)rh->hashval2_1 << 16 |
3516                                (u32)rh->hashval1_1 << 8 |
3517                                (u32)rh->hashval1_2 << 0);
3518         skb_pull(skb, sizeof(*rh));
3519
3520         rp->rx_packets++;
3521         rp->rx_bytes += skb->len;
3522
3523         skb->protocol = eth_type_trans(skb, np->dev);
3524         skb_record_rx_queue(skb, rp->rx_channel);
3525         napi_gro_receive(napi, skb);
3526
3527         return num_rcr;
3528 }
3529
3530 static int niu_rbr_fill(struct niu *np, struct rx_ring_info *rp, gfp_t mask)
3531 {
3532         int blocks_per_page = rp->rbr_blocks_per_page;
3533         int err, index = rp->rbr_index;
3534
3535         err = 0;
3536         while (index < (rp->rbr_table_size - blocks_per_page)) {
3537                 err = niu_rbr_add_page(np, rp, mask, index);
3538                 if (err)
3539                         break;
3540
3541                 index += blocks_per_page;
3542         }
3543
3544         rp->rbr_index = index;
3545         return err;
3546 }
3547
3548 static void niu_rbr_free(struct niu *np, struct rx_ring_info *rp)
3549 {
3550         int i;
3551
3552         for (i = 0; i < MAX_RBR_RING_SIZE; i++) {
3553                 struct page *page;
3554
3555                 page = rp->rxhash[i];
3556                 while (page) {
3557                         struct page *next = (struct page *) page->mapping;
3558                         u64 base = page->index;
3559
3560                         np->ops->unmap_page(np->device, base, PAGE_SIZE,
3561                                             DMA_FROM_DEVICE);
3562                         page->index = 0;
3563                         page->mapping = NULL;
3564
3565                         __free_page(page);
3566
3567                         page = next;
3568                 }
3569         }
3570
3571         for (i = 0; i < rp->rbr_table_size; i++)
3572                 rp->rbr[i] = cpu_to_le32(0);
3573         rp->rbr_index = 0;
3574 }
3575
3576 static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
3577 {
3578         struct tx_buff_info *tb = &rp->tx_buffs[idx];
3579         struct sk_buff *skb = tb->skb;
3580         struct tx_pkt_hdr *tp;
3581         u64 tx_flags;
3582         int i, len;
3583
3584         tp = (struct tx_pkt_hdr *) skb->data;
3585         tx_flags = le64_to_cpup(&tp->flags);
3586
3587         rp->tx_packets++;
3588         rp->tx_bytes += (((tx_flags & TXHDR_LEN) >> TXHDR_LEN_SHIFT) -
3589                          ((tx_flags & TXHDR_PAD) / 2));
3590
3591         len = skb_headlen(skb);
3592         np->ops->unmap_single(np->device, tb->mapping,
3593                               len, DMA_TO_DEVICE);
3594
3595         if (le64_to_cpu(rp->descr[idx]) & TX_DESC_MARK)
3596                 rp->mark_pending--;
3597
3598         tb->skb = NULL;
3599         do {
3600                 idx = NEXT_TX(rp, idx);
3601                 len -= MAX_TX_DESC_LEN;
3602         } while (len > 0);
3603
3604         for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
3605                 tb = &rp->tx_buffs[idx];
3606                 BUG_ON(tb->skb != NULL);
3607                 np->ops->unmap_page(np->device, tb->mapping,
3608                                     skb_shinfo(skb)->frags[i].size,
3609                                     DMA_TO_DEVICE);
3610                 idx = NEXT_TX(rp, idx);
3611         }
3612
3613         dev_kfree_skb(skb);
3614
3615         return idx;
3616 }
3617
3618 #define NIU_TX_WAKEUP_THRESH(rp)                ((rp)->pending / 4)
3619
3620 static void niu_tx_work(struct niu *np, struct tx_ring_info *rp)
3621 {
3622         struct netdev_queue *txq;
3623         u16 pkt_cnt, tmp;
3624         int cons, index;
3625         u64 cs;
3626
3627         index = (rp - np->tx_rings);
3628         txq = netdev_get_tx_queue(np->dev, index);
3629
3630         cs = rp->tx_cs;
3631         if (unlikely(!(cs & (TX_CS_MK | TX_CS_MMK))))
3632                 goto out;
3633
3634         tmp = pkt_cnt = (cs & TX_CS_PKT_CNT) >> TX_CS_PKT_CNT_SHIFT;
3635         pkt_cnt = (pkt_cnt - rp->last_pkt_cnt) &
3636                 (TX_CS_PKT_CNT >> TX_CS_PKT_CNT_SHIFT);
3637
3638         rp->last_pkt_cnt = tmp;
3639
3640         cons = rp->cons;
3641
3642         netif_printk(np, tx_done, KERN_DEBUG, np->dev,
3643                      "%s() pkt_cnt[%u] cons[%d]\n", __func__, pkt_cnt, cons);
3644
3645         while (pkt_cnt--)
3646                 cons = release_tx_packet(np, rp, cons);
3647
3648         rp->cons = cons;
3649         smp_mb();
3650
3651 out:
3652         if (unlikely(netif_tx_queue_stopped(txq) &&
3653                      (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))) {
3654                 __netif_tx_lock(txq, smp_processor_id());
3655                 if (netif_tx_queue_stopped(txq) &&
3656                     (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp)))
3657                         netif_tx_wake_queue(txq);
3658                 __netif_tx_unlock(txq);
3659         }
3660 }
3661
3662 static inline void niu_sync_rx_discard_stats(struct niu *np,
3663                                              struct rx_ring_info *rp,
3664                                              const int limit)
3665 {
3666         /* This elaborate scheme is needed for reading the RX discard
3667          * counters, as they are only 16-bit and can overflow quickly,
3668          * and because the overflow indication bit is not usable as
3669          * the counter value does not wrap, but remains at max value
3670          * 0xFFFF.
3671          *
3672          * In theory and in practice counters can be lost in between
3673          * reading nr64() and clearing the counter nw64().  For this
3674          * reason, the number of counter clearings nw64() is
3675          * limited/reduced though the limit parameter.
3676          */
3677         int rx_channel = rp->rx_channel;
3678         u32 misc, wred;
3679
3680         /* RXMISC (Receive Miscellaneous Discard Count), covers the
3681          * following discard events: IPP (Input Port Process),
3682          * FFLP/TCAM, Full RCR (Receive Completion Ring) RBR (Receive
3683          * Block Ring) prefetch buffer is empty.
3684          */
3685         misc = nr64(RXMISC(rx_channel));
3686         if (unlikely((misc & RXMISC_COUNT) > limit)) {
3687                 nw64(RXMISC(rx_channel), 0);
3688                 rp->rx_errors += misc & RXMISC_COUNT;
3689
3690                 if (unlikely(misc & RXMISC_OFLOW))
3691                         dev_err(np->device, "rx-%d: Counter overflow RXMISC discard\n",
3692                                 rx_channel);
3693
3694                 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3695                              "rx-%d: MISC drop=%u over=%u\n",
3696                              rx_channel, misc, misc-limit);
3697         }
3698
3699         /* WRED (Weighted Random Early Discard) by hardware */
3700         wred = nr64(RED_DIS_CNT(rx_channel));
3701         if (unlikely((wred & RED_DIS_CNT_COUNT) > limit)) {
3702                 nw64(RED_DIS_CNT(rx_channel), 0);
3703                 rp->rx_dropped += wred & RED_DIS_CNT_COUNT;
3704
3705                 if (unlikely(wred & RED_DIS_CNT_OFLOW))
3706                         dev_err(np->device, "rx-%d: Counter overflow WRED discard\n", rx_channel);
3707
3708                 netif_printk(np, rx_err, KERN_DEBUG, np->dev,
3709                              "rx-%d: WRED drop=%u over=%u\n",
3710                              rx_channel, wred, wred-limit);
3711         }
3712 }
3713
3714 static int niu_rx_work(struct napi_struct *napi, struct niu *np,
3715                        struct rx_ring_info *rp, int budget)
3716 {
3717         int qlen, rcr_done = 0, work_done = 0;
3718         struct rxdma_mailbox *mbox = rp->mbox;
3719         u64 stat;
3720
3721 #if 1
3722         stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3723         qlen = nr64(RCRSTAT_A(rp->rx_channel)) & RCRSTAT_A_QLEN;
3724 #else
3725         stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
3726         qlen = (le64_to_cpup(&mbox->rcrstat_a) & RCRSTAT_A_QLEN);
3727 #endif
3728         mbox->rx_dma_ctl_stat = 0;
3729         mbox->rcrstat_a = 0;
3730
3731         netif_printk(np, rx_status, KERN_DEBUG, np->dev,
3732                      "%s(chan[%d]), stat[%llx] qlen=%d\n",
3733                      __func__, rp->rx_channel, (unsigned long long)stat, qlen);
3734
3735         rcr_done = work_done = 0;
3736         qlen = min(qlen, budget);
3737         while (work_done < qlen) {
3738                 rcr_done += niu_process_rx_pkt(napi, np, rp);
3739                 work_done++;
3740         }
3741
3742         if (rp->rbr_refill_pending >= rp->rbr_kick_thresh) {
3743                 unsigned int i;
3744
3745                 for (i = 0; i < rp->rbr_refill_pending; i++)
3746                         niu_rbr_refill(np, rp, GFP_ATOMIC);
3747                 rp->rbr_refill_pending = 0;
3748         }
3749
3750         stat = (RX_DMA_CTL_STAT_MEX |
3751                 ((u64)work_done << RX_DMA_CTL_STAT_PKTREAD_SHIFT) |
3752                 ((u64)rcr_done << RX_DMA_CTL_STAT_PTRREAD_SHIFT));
3753
3754         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat);
3755
3756         /* Only sync discards stats when qlen indicate potential for drops */
3757         if (qlen > 10)
3758                 niu_sync_rx_discard_stats(np, rp, 0x7FFF);
3759
3760         return work_done;
3761 }
3762
3763 static int niu_poll_core(struct niu *np, struct niu_ldg *lp, int budget)
3764 {
3765         u64 v0 = lp->v0;
3766         u32 tx_vec = (v0 >> 32);
3767         u32 rx_vec = (v0 & 0xffffffff);
3768         int i, work_done = 0;
3769
3770         netif_printk(np, intr, KERN_DEBUG, np->dev,
3771                      "%s() v0[%016llx]\n", __func__, (unsigned long long)v0);
3772
3773         for (i = 0; i < np->num_tx_rings; i++) {
3774                 struct tx_ring_info *rp = &np->tx_rings[i];
3775                 if (tx_vec & (1 << rp->tx_channel))
3776                         niu_tx_work(np, rp);
3777                 nw64(LD_IM0(LDN_TXDMA(rp->tx_channel)), 0);
3778         }
3779
3780         for (i = 0; i < np->num_rx_rings; i++) {
3781                 struct rx_ring_info *rp = &np->rx_rings[i];
3782
3783                 if (rx_vec & (1 << rp->rx_channel)) {
3784                         int this_work_done;
3785
3786                         this_work_done = niu_rx_work(&lp->napi, np, rp,
3787                                                      budget);
3788
3789                         budget -= this_work_done;
3790                         work_done += this_work_done;
3791                 }
3792                 nw64(LD_IM0(LDN_RXDMA(rp->rx_channel)), 0);
3793         }
3794
3795         return work_done;
3796 }
3797
3798 static int niu_poll(struct napi_struct *napi, int budget)
3799 {
3800         struct niu_ldg *lp = container_of(napi, struct niu_ldg, napi);
3801         struct niu *np = lp->np;
3802         int work_done;
3803
3804         work_done = niu_poll_core(np, lp, budget);
3805
3806         if (work_done < budget) {
3807                 napi_complete(napi);
3808                 niu_ldg_rearm(np, lp, 1);
3809         }
3810         return work_done;
3811 }
3812
3813 static void niu_log_rxchan_errors(struct niu *np, struct rx_ring_info *rp,
3814                                   u64 stat)
3815 {
3816         netdev_err(np->dev, "RX channel %u errors ( ", rp->rx_channel);
3817
3818         if (stat & RX_DMA_CTL_STAT_RBR_TMOUT)
3819                 pr_cont("RBR_TMOUT ");
3820         if (stat & RX_DMA_CTL_STAT_RSP_CNT_ERR)
3821                 pr_cont("RSP_CNT ");
3822         if (stat & RX_DMA_CTL_STAT_BYTE_EN_BUS)
3823                 pr_cont("BYTE_EN_BUS ");
3824         if (stat & RX_DMA_CTL_STAT_RSP_DAT_ERR)
3825                 pr_cont("RSP_DAT ");
3826         if (stat & RX_DMA_CTL_STAT_RCR_ACK_ERR)
3827                 pr_cont("RCR_ACK ");
3828         if (stat & RX_DMA_CTL_STAT_RCR_SHA_PAR)
3829                 pr_cont("RCR_SHA_PAR ");
3830         if (stat & RX_DMA_CTL_STAT_RBR_PRE_PAR)
3831                 pr_cont("RBR_PRE_PAR ");
3832         if (stat & RX_DMA_CTL_STAT_CONFIG_ERR)
3833                 pr_cont("CONFIG ");
3834         if (stat & RX_DMA_CTL_STAT_RCRINCON)
3835                 pr_cont("RCRINCON ");
3836         if (stat & RX_DMA_CTL_STAT_RCRFULL)
3837                 pr_cont("RCRFULL ");
3838         if (stat & RX_DMA_CTL_STAT_RBRFULL)
3839                 pr_cont("RBRFULL ");
3840         if (stat & RX_DMA_CTL_STAT_RBRLOGPAGE)
3841                 pr_cont("RBRLOGPAGE ");
3842         if (stat & RX_DMA_CTL_STAT_CFIGLOGPAGE)
3843                 pr_cont("CFIGLOGPAGE ");
3844         if (stat & RX_DMA_CTL_STAT_DC_FIFO_ERR)
3845                 pr_cont("DC_FIDO ");
3846
3847         pr_cont(")\n");
3848 }
3849
3850 static int niu_rx_error(struct niu *np, struct rx_ring_info *rp)
3851 {
3852         u64 stat = nr64(RX_DMA_CTL_STAT(rp->rx_channel));
3853         int err = 0;
3854
3855
3856         if (stat & (RX_DMA_CTL_STAT_CHAN_FATAL |
3857                     RX_DMA_CTL_STAT_PORT_FATAL))
3858                 err = -EINVAL;
3859
3860         if (err) {
3861                 netdev_err(np->dev, "RX channel %u error, stat[%llx]\n",
3862                            rp->rx_channel,
3863                            (unsigned long long) stat);
3864
3865                 niu_log_rxchan_errors(np, rp, stat);
3866         }
3867
3868         nw64(RX_DMA_CTL_STAT(rp->rx_channel),
3869              stat & RX_DMA_CTL_WRITE_CLEAR_ERRS);
3870
3871         return err;
3872 }
3873
3874 static void niu_log_txchan_errors(struct niu *np, struct tx_ring_info *rp,
3875                                   u64 cs)
3876 {
3877         netdev_err(np->dev, "TX channel %u errors ( ", rp->tx_channel);
3878
3879         if (cs & TX_CS_MBOX_ERR)
3880                 pr_cont("MBOX ");
3881         if (cs & TX_CS_PKT_SIZE_ERR)
3882                 pr_cont("PKT_SIZE ");
3883         if (cs & TX_CS_TX_RING_OFLOW)
3884                 pr_cont("TX_RING_OFLOW ");
3885         if (cs & TX_CS_PREF_BUF_PAR_ERR)
3886                 pr_cont("PREF_BUF_PAR ");
3887         if (cs & TX_CS_NACK_PREF)
3888                 pr_cont("NACK_PREF ");
3889         if (cs & TX_CS_NACK_PKT_RD)
3890                 pr_cont("NACK_PKT_RD ");
3891         if (cs & TX_CS_CONF_PART_ERR)
3892                 pr_cont("CONF_PART ");
3893         if (cs & TX_CS_PKT_PRT_ERR)
3894                 pr_cont("PKT_PTR ");
3895
3896         pr_cont(")\n");
3897 }
3898
3899 static int niu_tx_error(struct niu *np, struct tx_ring_info *rp)
3900 {
3901         u64 cs, logh, logl;
3902
3903         cs = nr64(TX_CS(rp->tx_channel));
3904         logh = nr64(TX_RNG_ERR_LOGH(rp->tx_channel));
3905         logl = nr64(TX_RNG_ERR_LOGL(rp->tx_channel));
3906
3907         netdev_err(np->dev, "TX channel %u error, cs[%llx] logh[%llx] logl[%llx]\n",
3908                    rp->tx_channel,
3909                    (unsigned long long)cs,
3910                    (unsigned long long)logh,
3911                    (unsigned long long)logl);
3912
3913         niu_log_txchan_errors(np, rp, cs);
3914
3915         return -ENODEV;
3916 }
3917
3918 static int niu_mif_interrupt(struct niu *np)
3919 {
3920         u64 mif_status = nr64(MIF_STATUS);
3921         int phy_mdint = 0;
3922
3923         if (np->flags & NIU_FLAGS_XMAC) {
3924                 u64 xrxmac_stat = nr64_mac(XRXMAC_STATUS);
3925
3926                 if (xrxmac_stat & XRXMAC_STATUS_PHY_MDINT)
3927                         phy_mdint = 1;
3928         }
3929
3930         netdev_err(np->dev, "MIF interrupt, stat[%llx] phy_mdint(%d)\n",
3931                    (unsigned long long)mif_status, phy_mdint);
3932
3933         return -ENODEV;
3934 }
3935
3936 static void niu_xmac_interrupt(struct niu *np)
3937 {
3938         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
3939         u64 val;
3940
3941         val = nr64_mac(XTXMAC_STATUS);
3942         if (val & XTXMAC_STATUS_FRAME_CNT_EXP)
3943                 mp->tx_frames += TXMAC_FRM_CNT_COUNT;
3944         if (val & XTXMAC_STATUS_BYTE_CNT_EXP)
3945                 mp->tx_bytes += TXMAC_BYTE_CNT_COUNT;
3946         if (val & XTXMAC_STATUS_TXFIFO_XFR_ERR)
3947                 mp->tx_fifo_errors++;
3948         if (val & XTXMAC_STATUS_TXMAC_OFLOW)
3949                 mp->tx_overflow_errors++;
3950         if (val & XTXMAC_STATUS_MAX_PSIZE_ERR)
3951                 mp->tx_max_pkt_size_errors++;
3952         if (val & XTXMAC_STATUS_TXMAC_UFLOW)
3953                 mp->tx_underflow_errors++;
3954
3955         val = nr64_mac(XRXMAC_STATUS);
3956         if (val & XRXMAC_STATUS_LCL_FLT_STATUS)
3957                 mp->rx_local_faults++;
3958         if (val & XRXMAC_STATUS_RFLT_DET)
3959                 mp->rx_remote_faults++;
3960         if (val & XRXMAC_STATUS_LFLT_CNT_EXP)
3961                 mp->rx_link_faults += LINK_FAULT_CNT_COUNT;
3962         if (val & XRXMAC_STATUS_ALIGNERR_CNT_EXP)
3963                 mp->rx_align_errors += RXMAC_ALIGN_ERR_CNT_COUNT;
3964         if (val & XRXMAC_STATUS_RXFRAG_CNT_EXP)
3965                 mp->rx_frags += RXMAC_FRAG_CNT_COUNT;
3966         if (val & XRXMAC_STATUS_RXMULTF_CNT_EXP)
3967                 mp->rx_mcasts += RXMAC_MC_FRM_CNT_COUNT;
3968         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3969                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3970         if (val & XRXMAC_STATUS_RXBCAST_CNT_EXP)
3971                 mp->rx_bcasts += RXMAC_BC_FRM_CNT_COUNT;
3972         if (val & XRXMAC_STATUS_RXHIST1_CNT_EXP)
3973                 mp->rx_hist_cnt1 += RXMAC_HIST_CNT1_COUNT;
3974         if (val & XRXMAC_STATUS_RXHIST2_CNT_EXP)
3975                 mp->rx_hist_cnt2 += RXMAC_HIST_CNT2_COUNT;
3976         if (val & XRXMAC_STATUS_RXHIST3_CNT_EXP)
3977                 mp->rx_hist_cnt3 += RXMAC_HIST_CNT3_COUNT;
3978         if (val & XRXMAC_STATUS_RXHIST4_CNT_EXP)
3979                 mp->rx_hist_cnt4 += RXMAC_HIST_CNT4_COUNT;
3980         if (val & XRXMAC_STATUS_RXHIST5_CNT_EXP)
3981                 mp->rx_hist_cnt5 += RXMAC_HIST_CNT5_COUNT;
3982         if (val & XRXMAC_STATUS_RXHIST6_CNT_EXP)
3983                 mp->rx_hist_cnt6 += RXMAC_HIST_CNT6_COUNT;
3984         if (val & XRXMAC_STATUS_RXHIST7_CNT_EXP)
3985                 mp->rx_hist_cnt7 += RXMAC_HIST_CNT7_COUNT;
3986         if (val & XRXMAC_STATUS_RXOCTET_CNT_EXP)
3987                 mp->rx_octets += RXMAC_BT_CNT_COUNT;
3988         if (val & XRXMAC_STATUS_CVIOLERR_CNT_EXP)
3989                 mp->rx_code_violations += RXMAC_CD_VIO_CNT_COUNT;
3990         if (val & XRXMAC_STATUS_LENERR_CNT_EXP)
3991                 mp->rx_len_errors += RXMAC_MPSZER_CNT_COUNT;
3992         if (val & XRXMAC_STATUS_CRCERR_CNT_EXP)
3993                 mp->rx_crc_errors += RXMAC_CRC_ER_CNT_COUNT;
3994         if (val & XRXMAC_STATUS_RXUFLOW)
3995                 mp->rx_underflows++;
3996         if (val & XRXMAC_STATUS_RXOFLOW)
3997                 mp->rx_overflows++;
3998
3999         val = nr64_mac(XMAC_FC_STAT);
4000         if (val & XMAC_FC_STAT_TX_MAC_NPAUSE)
4001                 mp->pause_off_state++;
4002         if (val & XMAC_FC_STAT_TX_MAC_PAUSE)
4003                 mp->pause_on_state++;
4004         if (val & XMAC_FC_STAT_RX_MAC_RPAUSE)
4005                 mp->pause_received++;
4006 }
4007
4008 static void niu_bmac_interrupt(struct niu *np)
4009 {
4010         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
4011         u64 val;
4012
4013         val = nr64_mac(BTXMAC_STATUS);
4014         if (val & BTXMAC_STATUS_UNDERRUN)
4015                 mp->tx_underflow_errors++;
4016         if (val & BTXMAC_STATUS_MAX_PKT_ERR)
4017                 mp->tx_max_pkt_size_errors++;
4018         if (val & BTXMAC_STATUS_BYTE_CNT_EXP)
4019                 mp->tx_bytes += BTXMAC_BYTE_CNT_COUNT;
4020         if (val & BTXMAC_STATUS_FRAME_CNT_EXP)
4021                 mp->tx_frames += BTXMAC_FRM_CNT_COUNT;
4022
4023         val = nr64_mac(BRXMAC_STATUS);
4024         if (val & BRXMAC_STATUS_OVERFLOW)
4025                 mp->rx_overflows++;
4026         if (val & BRXMAC_STATUS_FRAME_CNT_EXP)
4027                 mp->rx_frames += BRXMAC_FRAME_CNT_COUNT;
4028         if (val & BRXMAC_STATUS_ALIGN_ERR_EXP)
4029                 mp->rx_align_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4030         if (val & BRXMAC_STATUS_CRC_ERR_EXP)
4031                 mp->rx_crc_errors += BRXMAC_ALIGN_ERR_CNT_COUNT;
4032         if (val & BRXMAC_STATUS_LEN_ERR_EXP)
4033                 mp->rx_len_errors += BRXMAC_CODE_VIOL_ERR_CNT_COUNT;
4034
4035         val = nr64_mac(BMAC_CTRL_STATUS);
4036         if (val & BMAC_CTRL_STATUS_NOPAUSE)
4037                 mp->pause_off_state++;
4038         if (val & BMAC_CTRL_STATUS_PAUSE)
4039                 mp->pause_on_state++;
4040         if (val & BMAC_CTRL_STATUS_PAUSE_RECV)
4041                 mp->pause_received++;
4042 }
4043
4044 static int niu_mac_interrupt(struct niu *np)
4045 {
4046         if (np->flags & NIU_FLAGS_XMAC)
4047                 niu_xmac_interrupt(np);
4048         else
4049                 niu_bmac_interrupt(np);
4050
4051         return 0;
4052 }
4053
4054 static void niu_log_device_error(struct niu *np, u64 stat)
4055 {
4056         netdev_err(np->dev, "Core device errors ( ");
4057
4058         if (stat & SYS_ERR_MASK_META2)
4059                 pr_cont("META2 ");
4060         if (stat & SYS_ERR_MASK_META1)
4061                 pr_cont("META1 ");
4062         if (stat & SYS_ERR_MASK_PEU)
4063                 pr_cont("PEU ");
4064         if (stat & SYS_ERR_MASK_TXC)
4065                 pr_cont("TXC ");
4066         if (stat & SYS_ERR_MASK_RDMC)
4067                 pr_cont("RDMC ");
4068         if (stat & SYS_ERR_MASK_TDMC)
4069                 pr_cont("TDMC ");
4070         if (stat & SYS_ERR_MASK_ZCP)
4071                 pr_cont("ZCP ");
4072         if (stat & SYS_ERR_MASK_FFLP)
4073                 pr_cont("FFLP ");
4074         if (stat & SYS_ERR_MASK_IPP)
4075                 pr_cont("IPP ");
4076         if (stat & SYS_ERR_MASK_MAC)
4077                 pr_cont("MAC ");
4078         if (stat & SYS_ERR_MASK_SMX)
4079                 pr_cont("SMX ");
4080
4081         pr_cont(")\n");
4082 }
4083
4084 static int niu_device_error(struct niu *np)
4085 {
4086         u64 stat = nr64(SYS_ERR_STAT);
4087
4088         netdev_err(np->dev, "Core device error, stat[%llx]\n",
4089                    (unsigned long long)stat);
4090
4091         niu_log_device_error(np, stat);
4092
4093         return -ENODEV;
4094 }
4095
4096 static int niu_slowpath_interrupt(struct niu *np, struct niu_ldg *lp,
4097                               u64 v0, u64 v1, u64 v2)
4098 {
4099
4100         int i, err = 0;
4101
4102         lp->v0 = v0;
4103         lp->v1 = v1;
4104         lp->v2 = v2;
4105
4106         if (v1 & 0x00000000ffffffffULL) {
4107                 u32 rx_vec = (v1 & 0xffffffff);
4108
4109                 for (i = 0; i < np->num_rx_rings; i++) {
4110                         struct rx_ring_info *rp = &np->rx_rings[i];
4111
4112                         if (rx_vec & (1 << rp->rx_channel)) {
4113                                 int r = niu_rx_error(np, rp);
4114                                 if (r) {
4115                                         err = r;
4116                                 } else {
4117                                         if (!v0)
4118                                                 nw64(RX_DMA_CTL_STAT(rp->rx_channel),
4119                                                      RX_DMA_CTL_STAT_MEX);
4120                                 }
4121                         }
4122                 }
4123         }
4124         if (v1 & 0x7fffffff00000000ULL) {
4125                 u32 tx_vec = (v1 >> 32) & 0x7fffffff;
4126
4127                 for (i = 0; i < np->num_tx_rings; i++) {
4128                         struct tx_ring_info *rp = &np->tx_rings[i];
4129
4130                         if (tx_vec & (1 << rp->tx_channel)) {
4131                                 int r = niu_tx_error(np, rp);
4132                                 if (r)
4133                                         err = r;
4134                         }
4135                 }
4136         }
4137         if ((v0 | v1) & 0x8000000000000000ULL) {
4138                 int r = niu_mif_interrupt(np);
4139                 if (r)
4140                         err = r;
4141         }
4142         if (v2) {
4143                 if (v2 & 0x01ef) {
4144                         int r = niu_mac_interrupt(np);
4145                         if (r)
4146                                 err = r;
4147                 }
4148                 if (v2 & 0x0210) {
4149                         int r = niu_device_error(np);
4150                         if (r)
4151                                 err = r;
4152                 }
4153         }
4154
4155         if (err)
4156                 niu_enable_interrupts(np, 0);
4157
4158         return err;
4159 }
4160
4161 static void niu_rxchan_intr(struct niu *np, struct rx_ring_info *rp,
4162                             int ldn)
4163 {
4164         struct rxdma_mailbox *mbox = rp->mbox;
4165         u64 stat_write, stat = le64_to_cpup(&mbox->rx_dma_ctl_stat);
4166
4167         stat_write = (RX_DMA_CTL_STAT_RCRTHRES |
4168                       RX_DMA_CTL_STAT_RCRTO);
4169         nw64(RX_DMA_CTL_STAT(rp->rx_channel), stat_write);
4170
4171         netif_printk(np, intr, KERN_DEBUG, np->dev,
4172                      "%s() stat[%llx]\n", __func__, (unsigned long long)stat);
4173 }
4174
4175 static void niu_txchan_intr(struct niu *np, struct tx_ring_info *rp,
4176                             int ldn)
4177 {
4178         rp->tx_cs = nr64(TX_CS(rp->tx_channel));
4179
4180         netif_printk(np, intr, KERN_DEBUG, np->dev,
4181                      "%s() cs[%llx]\n", __func__, (unsigned long long)rp->tx_cs);
4182 }
4183
4184 static void __niu_fastpath_interrupt(struct niu *np, int ldg, u64 v0)
4185 {
4186         struct niu_parent *parent = np->parent;
4187         u32 rx_vec, tx_vec;
4188         int i;
4189
4190         tx_vec = (v0 >> 32);
4191         rx_vec = (v0 & 0xffffffff);
4192
4193         for (i = 0; i < np->num_rx_rings; i++) {
4194                 struct rx_ring_info *rp = &np->rx_rings[i];
4195                 int ldn = LDN_RXDMA(rp->rx_channel);
4196
4197                 if (parent->ldg_map[ldn] != ldg)
4198                         continue;
4199
4200                 nw64(LD_IM0(ldn), LD_IM0_MASK);
4201                 if (rx_vec & (1 << rp->rx_channel))
4202                         niu_rxchan_intr(np, rp, ldn);
4203         }
4204
4205         for (i = 0; i < np->num_tx_rings; i++) {
4206                 struct tx_ring_info *rp = &np->tx_rings[i];
4207                 int ldn = LDN_TXDMA(rp->tx_channel);
4208
4209                 if (parent->ldg_map[ldn] != ldg)
4210                         continue;
4211
4212                 nw64(LD_IM0(ldn), LD_IM0_MASK);
4213                 if (tx_vec & (1 << rp->tx_channel))
4214                         niu_txchan_intr(np, rp, ldn);
4215         }
4216 }
4217
4218 static void niu_schedule_napi(struct niu *np, struct niu_ldg *lp,
4219                               u64 v0, u64 v1, u64 v2)
4220 {
4221         if (likely(napi_schedule_prep(&lp->napi))) {
4222                 lp->v0 = v0;
4223                 lp->v1 = v1;
4224                 lp->v2 = v2;
4225                 __niu_fastpath_interrupt(np, lp->ldg_num, v0);
4226                 __napi_schedule(&lp->napi);
4227         }
4228 }
4229
4230 static irqreturn_t niu_interrupt(int irq, void *dev_id)
4231 {
4232         struct niu_ldg *lp = dev_id;
4233         struct niu *np = lp->np;
4234         int ldg = lp->ldg_num;
4235         unsigned long flags;
4236         u64 v0, v1, v2;
4237
4238         if (netif_msg_intr(np))
4239                 printk(KERN_DEBUG KBUILD_MODNAME ": " "%s() ldg[%p](%d)",
4240                        __func__, lp, ldg);
4241
4242         spin_lock_irqsave(&np->lock, flags);
4243
4244         v0 = nr64(LDSV0(ldg));
4245         v1 = nr64(LDSV1(ldg));
4246         v2 = nr64(LDSV2(ldg));
4247
4248         if (netif_msg_intr(np))
4249                 pr_cont(" v0[%llx] v1[%llx] v2[%llx]\n",
4250                        (unsigned long long) v0,
4251                        (unsigned long long) v1,
4252                        (unsigned long long) v2);
4253
4254         if (unlikely(!v0 && !v1 && !v2)) {
4255                 spin_unlock_irqrestore(&np->lock, flags);
4256                 return IRQ_NONE;
4257         }
4258
4259         if (unlikely((v0 & ((u64)1 << LDN_MIF)) || v1 || v2)) {
4260                 int err = niu_slowpath_interrupt(np, lp, v0, v1, v2);
4261                 if (err)
4262                         goto out;
4263         }
4264         if (likely(v0 & ~((u64)1 << LDN_MIF)))
4265                 niu_schedule_napi(np, lp, v0, v1, v2);
4266         else
4267                 niu_ldg_rearm(np, lp, 1);
4268 out:
4269         spin_unlock_irqrestore(&np->lock, flags);
4270
4271         return IRQ_HANDLED;
4272 }
4273
4274 static void niu_free_rx_ring_info(struct niu *np, struct rx_ring_info *rp)
4275 {
4276         if (rp->mbox) {
4277                 np->ops->free_coherent(np->device,
4278                                        sizeof(struct rxdma_mailbox),
4279                                        rp->mbox, rp->mbox_dma);
4280                 rp->mbox = NULL;
4281         }
4282         if (rp->rcr) {
4283                 np->ops->free_coherent(np->device,
4284                                        MAX_RCR_RING_SIZE * sizeof(__le64),
4285                                        rp->rcr, rp->rcr_dma);
4286                 rp->rcr = NULL;
4287                 rp->rcr_table_size = 0;
4288                 rp->rcr_index = 0;
4289         }
4290         if (rp->rbr) {
4291                 niu_rbr_free(np, rp);
4292
4293                 np->ops->free_coherent(np->device,
4294                                        MAX_RBR_RING_SIZE * sizeof(__le32),
4295                                        rp->rbr, rp->rbr_dma);
4296                 rp->rbr = NULL;
4297                 rp->rbr_table_size = 0;
4298                 rp->rbr_index = 0;
4299         }
4300         kfree(rp->rxhash);
4301         rp->rxhash = NULL;
4302 }
4303
4304 static void niu_free_tx_ring_info(struct niu *np, struct tx_ring_info *rp)
4305 {
4306         if (rp->mbox) {
4307                 np->ops->free_coherent(np->device,
4308                                        sizeof(struct txdma_mailbox),
4309                                        rp->mbox, rp->mbox_dma);
4310                 rp->mbox = NULL;
4311         }
4312         if (rp->descr) {
4313                 int i;
4314
4315                 for (i = 0; i < MAX_TX_RING_SIZE; i++) {
4316                         if (rp->tx_buffs[i].skb)
4317                                 (void) release_tx_packet(np, rp, i);
4318                 }
4319
4320                 np->ops->free_coherent(np->device,
4321                                        MAX_TX_RING_SIZE * sizeof(__le64),
4322                                        rp->descr, rp->descr_dma);
4323                 rp->descr = NULL;
4324                 rp->pending = 0;
4325                 rp->prod = 0;
4326                 rp->cons = 0;
4327                 rp->wrap_bit = 0;
4328         }
4329 }
4330
4331 static void niu_free_channels(struct niu *np)
4332 {
4333         int i;
4334
4335         if (np->rx_rings) {
4336                 for (i = 0; i < np->num_rx_rings; i++) {
4337                         struct rx_ring_info *rp = &np->rx_rings[i];
4338
4339                         niu_free_rx_ring_info(np, rp);
4340                 }
4341                 kfree(np->rx_rings);
4342                 np->rx_rings = NULL;
4343                 np->num_rx_rings = 0;
4344         }
4345
4346         if (np->tx_rings) {
4347                 for (i = 0; i < np->num_tx_rings; i++) {
4348                         struct tx_ring_info *rp = &np->tx_rings[i];
4349
4350                         niu_free_tx_ring_info(np, rp);
4351                 }
4352                 kfree(np->tx_rings);
4353                 np->tx_rings = NULL;
4354                 np->num_tx_rings = 0;
4355         }
4356 }
4357
4358 static int niu_alloc_rx_ring_info(struct niu *np,
4359                                   struct rx_ring_info *rp)
4360 {
4361         BUILD_BUG_ON(sizeof(struct rxdma_mailbox) != 64);
4362
4363         rp->rxhash = kzalloc(MAX_RBR_RING_SIZE * sizeof(struct page *),
4364                              GFP_KERNEL);
4365         if (!rp->rxhash)
4366                 return -ENOMEM;
4367
4368         rp->mbox = np->ops->alloc_coherent(np->device,
4369                                            sizeof(struct rxdma_mailbox),
4370                                            &rp->mbox_dma, GFP_KERNEL);
4371         if (!rp->mbox)
4372                 return -ENOMEM;
4373         if ((unsigned long)rp->mbox & (64UL - 1)) {
4374                 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA mailbox %p\n",
4375                            rp->mbox);
4376                 return -EINVAL;
4377         }
4378
4379         rp->rcr = np->ops->alloc_coherent(np->device,
4380                                           MAX_RCR_RING_SIZE * sizeof(__le64),
4381                                           &rp->rcr_dma, GFP_KERNEL);
4382         if (!rp->rcr)
4383                 return -ENOMEM;
4384         if ((unsigned long)rp->rcr & (64UL - 1)) {
4385                 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RCR table %p\n",
4386                            rp->rcr);
4387                 return -EINVAL;
4388         }
4389         rp->rcr_table_size = MAX_RCR_RING_SIZE;
4390         rp->rcr_index = 0;
4391
4392         rp->rbr = np->ops->alloc_coherent(np->device,
4393                                           MAX_RBR_RING_SIZE * sizeof(__le32),
4394                                           &rp->rbr_dma, GFP_KERNEL);
4395         if (!rp->rbr)
4396                 return -ENOMEM;
4397         if ((unsigned long)rp->rbr & (64UL - 1)) {
4398                 netdev_err(np->dev, "Coherent alloc gives misaligned RXDMA RBR table %p\n",
4399                            rp->rbr);
4400                 return -EINVAL;
4401         }
4402         rp->rbr_table_size = MAX_RBR_RING_SIZE;
4403         rp->rbr_index = 0;
4404         rp->rbr_pending = 0;
4405
4406         return 0;
4407 }
4408
4409 static void niu_set_max_burst(struct niu *np, struct tx_ring_info *rp)
4410 {
4411         int mtu = np->dev->mtu;
4412
4413         /* These values are recommended by the HW designers for fair
4414          * utilization of DRR amongst the rings.
4415          */
4416         rp->max_burst = mtu + 32;
4417         if (rp->max_burst > 4096)
4418                 rp->max_burst = 4096;
4419 }
4420
4421 static int niu_alloc_tx_ring_info(struct niu *np,
4422                                   struct tx_ring_info *rp)
4423 {
4424         BUILD_BUG_ON(sizeof(struct txdma_mailbox) != 64);
4425
4426         rp->mbox = np->ops->alloc_coherent(np->device,
4427                                            sizeof(struct txdma_mailbox),
4428                                            &rp->mbox_dma, GFP_KERNEL);
4429         if (!rp->mbox)
4430                 return -ENOMEM;
4431         if ((unsigned long)rp->mbox & (64UL - 1)) {
4432                 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA mailbox %p\n",
4433                            rp->mbox);
4434                 return -EINVAL;
4435         }
4436
4437         rp->descr = np->ops->alloc_coherent(np->device,
4438                                             MAX_TX_RING_SIZE * sizeof(__le64),
4439                                             &rp->descr_dma, GFP_KERNEL);
4440         if (!rp->descr)
4441                 return -ENOMEM;
4442         if ((unsigned long)rp->descr & (64UL - 1)) {
4443                 netdev_err(np->dev, "Coherent alloc gives misaligned TXDMA descr table %p\n",
4444                            rp->descr);
4445                 return -EINVAL;
4446         }
4447
4448         rp->pending = MAX_TX_RING_SIZE;
4449         rp->prod = 0;
4450         rp->cons = 0;
4451         rp->wrap_bit = 0;
4452
4453         /* XXX make these configurable... XXX */
4454         rp->mark_freq = rp->pending / 4;
4455
4456         niu_set_max_burst(np, rp);
4457
4458         return 0;
4459 }
4460
4461 static void niu_size_rbr(struct niu *np, struct rx_ring_info *rp)
4462 {
4463         u16 bss;
4464
4465         bss = min(PAGE_SHIFT, 15);
4466
4467         rp->rbr_block_size = 1 << bss;
4468         rp->rbr_blocks_per_page = 1 << (PAGE_SHIFT-bss);
4469
4470         rp->rbr_sizes[0] = 256;
4471         rp->rbr_sizes[1] = 1024;
4472         if (np->dev->mtu > ETH_DATA_LEN) {
4473                 switch (PAGE_SIZE) {
4474                 case 4 * 1024:
4475                         rp->rbr_sizes[2] = 4096;
4476                         break;
4477
4478                 default:
4479                         rp->rbr_sizes[2] = 8192;
4480                         break;
4481                 }
4482         } else {
4483                 rp->rbr_sizes[2] = 2048;
4484         }
4485         rp->rbr_sizes[3] = rp->rbr_block_size;
4486 }
4487
4488 static int niu_alloc_channels(struct niu *np)
4489 {
4490         struct niu_parent *parent = np->parent;
4491         int first_rx_channel, first_tx_channel;
4492         int i, port, err;
4493
4494         port = np->port;
4495         first_rx_channel = first_tx_channel = 0;
4496         for (i = 0; i < port; i++) {
4497                 first_rx_channel += parent->rxchan_per_port[i];
4498                 first_tx_channel += parent->txchan_per_port[i];
4499         }
4500
4501         np->num_rx_rings = parent->rxchan_per_port[port];
4502         np->num_tx_rings = parent->txchan_per_port[port];
4503
4504         netif_set_real_num_rx_queues(np->dev, np->num_rx_rings);
4505         netif_set_real_num_tx_queues(np->dev, np->num_tx_rings);
4506
4507         np->rx_rings = kcalloc(np->num_rx_rings, sizeof(struct rx_ring_info),
4508                                GFP_KERNEL);
4509         err = -ENOMEM;
4510         if (!np->rx_rings)
4511                 goto out_err;
4512
4513         for (i = 0; i < np->num_rx_rings; i++) {
4514                 struct rx_ring_info *rp = &np->rx_rings[i];
4515
4516                 rp->np = np;
4517                 rp->rx_channel = first_rx_channel + i;
4518
4519                 err = niu_alloc_rx_ring_info(np, rp);
4520                 if (err)
4521                         goto out_err;
4522
4523                 niu_size_rbr(np, rp);
4524
4525                 /* XXX better defaults, configurable, etc... XXX */
4526                 rp->nonsyn_window = 64;
4527                 rp->nonsyn_threshold = rp->rcr_table_size - 64;
4528                 rp->syn_window = 64;
4529                 rp->syn_threshold = rp->rcr_table_size - 64;
4530                 rp->rcr_pkt_threshold = 16;
4531                 rp->rcr_timeout = 8;
4532                 rp->rbr_kick_thresh = RBR_REFILL_MIN;
4533                 if (rp->rbr_kick_thresh < rp->rbr_blocks_per_page)
4534                         rp->rbr_kick_thresh = rp->rbr_blocks_per_page;
4535
4536                 err = niu_rbr_fill(np, rp, GFP_KERNEL);
4537                 if (err)
4538                         return err;
4539         }
4540
4541         np->tx_rings = kcalloc(np->num_tx_rings, sizeof(struct tx_ring_info),
4542                                GFP_KERNEL);
4543         err = -ENOMEM;
4544         if (!np->tx_rings)
4545                 goto out_err;
4546
4547         for (i = 0; i < np->num_tx_rings; i++) {
4548                 struct tx_ring_info *rp = &np->tx_rings[i];
4549
4550                 rp->np = np;
4551                 rp->tx_channel = first_tx_channel + i;
4552
4553                 err = niu_alloc_tx_ring_info(np, rp);
4554                 if (err)
4555                         goto out_err;
4556         }
4557
4558         return 0;
4559
4560 out_err:
4561         niu_free_channels(np);
4562         return err;
4563 }
4564
4565 static int niu_tx_cs_sng_poll(struct niu *np, int channel)
4566 {
4567         int limit = 1000;
4568
4569         while (--limit > 0) {
4570                 u64 val = nr64(TX_CS(channel));
4571                 if (val & TX_CS_SNG_STATE)
4572                         return 0;
4573         }
4574         return -ENODEV;
4575 }
4576
4577 static int niu_tx_channel_stop(struct niu *np, int channel)
4578 {
4579         u64 val = nr64(TX_CS(channel));
4580
4581         val |= TX_CS_STOP_N_GO;
4582         nw64(TX_CS(channel), val);
4583
4584         return niu_tx_cs_sng_poll(np, channel);
4585 }
4586
4587 static int niu_tx_cs_reset_poll(struct niu *np, int channel)
4588 {
4589         int limit = 1000;
4590
4591         while (--limit > 0) {
4592                 u64 val = nr64(TX_CS(channel));
4593                 if (!(val & TX_CS_RST))
4594                         return 0;
4595         }
4596         return -ENODEV;
4597 }
4598
4599 static int niu_tx_channel_reset(struct niu *np, int channel)
4600 {
4601         u64 val = nr64(TX_CS(channel));
4602         int err;
4603
4604         val |= TX_CS_RST;
4605         nw64(TX_CS(channel), val);
4606
4607         err = niu_tx_cs_reset_poll(np, channel);
4608         if (!err)
4609                 nw64(TX_RING_KICK(channel), 0);
4610
4611         return err;
4612 }
4613
4614 static int niu_tx_channel_lpage_init(struct niu *np, int channel)
4615 {
4616         u64 val;
4617
4618         nw64(TX_LOG_MASK1(channel), 0);
4619         nw64(TX_LOG_VAL1(channel), 0);
4620         nw64(TX_LOG_MASK2(channel), 0);
4621         nw64(TX_LOG_VAL2(channel), 0);
4622         nw64(TX_LOG_PAGE_RELO1(channel), 0);
4623         nw64(TX_LOG_PAGE_RELO2(channel), 0);
4624         nw64(TX_LOG_PAGE_HDL(channel), 0);
4625
4626         val  = (u64)np->port << TX_LOG_PAGE_VLD_FUNC_SHIFT;
4627         val |= (TX_LOG_PAGE_VLD_PAGE0 | TX_LOG_PAGE_VLD_PAGE1);
4628         nw64(TX_LOG_PAGE_VLD(channel), val);
4629
4630         /* XXX TXDMA 32bit mode? XXX */
4631
4632         return 0;
4633 }
4634
4635 static void niu_txc_enable_port(struct niu *np, int on)
4636 {
4637         unsigned long flags;
4638         u64 val, mask;
4639
4640         niu_lock_parent(np, flags);
4641         val = nr64(TXC_CONTROL);
4642         mask = (u64)1 << np->port;
4643         if (on) {
4644                 val |= TXC_CONTROL_ENABLE | mask;
4645         } else {
4646                 val &= ~mask;
4647                 if ((val & ~TXC_CONTROL_ENABLE) == 0)
4648                         val &= ~TXC_CONTROL_ENABLE;
4649         }
4650         nw64(TXC_CONTROL, val);
4651         niu_unlock_parent(np, flags);
4652 }
4653
4654 static void niu_txc_set_imask(struct niu *np, u64 imask)
4655 {
4656         unsigned long flags;
4657         u64 val;
4658
4659         niu_lock_parent(np, flags);
4660         val = nr64(TXC_INT_MASK);
4661         val &= ~TXC_INT_MASK_VAL(np->port);
4662         val |= (imask << TXC_INT_MASK_VAL_SHIFT(np->port));
4663         niu_unlock_parent(np, flags);
4664 }
4665
4666 static void niu_txc_port_dma_enable(struct niu *np, int on)
4667 {
4668         u64 val = 0;
4669
4670         if (on) {
4671                 int i;
4672
4673                 for (i = 0; i < np->num_tx_rings; i++)
4674                         val |= (1 << np->tx_rings[i].tx_channel);
4675         }
4676         nw64(TXC_PORT_DMA(np->port), val);
4677 }
4678
4679 static int niu_init_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
4680 {
4681         int err, channel = rp->tx_channel;
4682         u64 val, ring_len;
4683
4684         err = niu_tx_channel_stop(np, channel);
4685         if (err)
4686                 return err;
4687
4688         err = niu_tx_channel_reset(np, channel);
4689         if (err)
4690                 return err;
4691
4692         err = niu_tx_channel_lpage_init(np, channel);
4693         if (err)
4694                 return err;
4695
4696         nw64(TXC_DMA_MAX(channel), rp->max_burst);
4697         nw64(TX_ENT_MSK(channel), 0);
4698
4699         if (rp->descr_dma & ~(TX_RNG_CFIG_STADDR_BASE |
4700                               TX_RNG_CFIG_STADDR)) {
4701                 netdev_err(np->dev, "TX ring channel %d DMA addr (%llx) is not aligned\n",
4702                            channel, (unsigned long long)rp->descr_dma);
4703                 return -EINVAL;
4704         }
4705
4706         /* The length field in TX_RNG_CFIG is measured in 64-byte
4707          * blocks.  rp->pending is the number of TX descriptors in
4708          * our ring, 8 bytes each, thus we divide by 8 bytes more
4709          * to get the proper value the chip wants.
4710          */
4711         ring_len = (rp->pending / 8);
4712
4713         val = ((ring_len << TX_RNG_CFIG_LEN_SHIFT) |
4714                rp->descr_dma);
4715         nw64(TX_RNG_CFIG(channel), val);
4716
4717         if (((rp->mbox_dma >> 32) & ~TXDMA_MBH_MBADDR) ||
4718             ((u32)rp->mbox_dma & ~TXDMA_MBL_MBADDR)) {
4719                 netdev_err(np->dev, "TX ring channel %d MBOX addr (%llx) has invalid bits\n",
4720                             channel, (unsigned long long)rp->mbox_dma);
4721                 return -EINVAL;
4722         }
4723         nw64(TXDMA_MBH(channel), rp->mbox_dma >> 32);
4724         nw64(TXDMA_MBL(channel), rp->mbox_dma & TXDMA_MBL_MBADDR);
4725
4726         nw64(TX_CS(channel), 0);
4727
4728         rp->last_pkt_cnt = 0;
4729
4730         return 0;
4731 }
4732
4733 static void niu_init_rdc_groups(struct niu *np)
4734 {
4735         struct niu_rdc_tables *tp = &np->parent->rdc_group_cfg[np->port];
4736         int i, first_table_num = tp->first_table_num;
4737
4738         for (i = 0; i < tp->num_tables; i++) {
4739                 struct rdc_table *tbl = &tp->tables[i];
4740                 int this_table = first_table_num + i;
4741                 int slot;
4742
4743                 for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++)
4744                         nw64(RDC_TBL(this_table, slot),
4745                              tbl->rxdma_channel[slot]);
4746         }
4747
4748         nw64(DEF_RDC(np->port), np->parent->rdc_default[np->port]);
4749 }
4750
4751 static void niu_init_drr_weight(struct niu *np)
4752 {
4753         int type = phy_decode(np->parent->port_phy, np->port);
4754         u64 val;
4755
4756         switch (type) {
4757         case PORT_TYPE_10G:
4758                 val = PT_DRR_WEIGHT_DEFAULT_10G;
4759                 break;
4760
4761         case PORT_TYPE_1G:
4762         default:
4763                 val = PT_DRR_WEIGHT_DEFAULT_1G;
4764                 break;
4765         }
4766         nw64(PT_DRR_WT(np->port), val);
4767 }
4768
4769 static int niu_init_hostinfo(struct niu *np)
4770 {
4771         struct niu_parent *parent = np->parent;
4772         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
4773         int i, err, num_alt = niu_num_alt_addr(np);
4774         int first_rdc_table = tp->first_table_num;
4775
4776         err = niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
4777         if (err)
4778                 return err;
4779
4780         err = niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
4781         if (err)
4782                 return err;
4783
4784         for (i = 0; i < num_alt; i++) {
4785                 err = niu_set_alt_mac_rdc_table(np, i, first_rdc_table, 1);
4786                 if (err)
4787                         return err;
4788         }
4789
4790         return 0;
4791 }
4792
4793 static int niu_rx_channel_reset(struct niu *np, int channel)
4794 {
4795         return niu_set_and_wait_clear(np, RXDMA_CFIG1(channel),
4796                                       RXDMA_CFIG1_RST, 1000, 10,
4797                                       "RXDMA_CFIG1");
4798 }
4799
4800 static int niu_rx_channel_lpage_init(struct niu *np, int channel)
4801 {
4802         u64 val;
4803
4804         nw64(RX_LOG_MASK1(channel), 0);
4805         nw64(RX_LOG_VAL1(channel), 0);
4806         nw64(RX_LOG_MASK2(channel), 0);
4807         nw64(RX_LOG_VAL2(channel), 0);
4808         nw64(RX_LOG_PAGE_RELO1(channel), 0);
4809         nw64(RX_LOG_PAGE_RELO2(channel), 0);
4810         nw64(RX_LOG_PAGE_HDL(channel), 0);
4811
4812         val  = (u64)np->port << RX_LOG_PAGE_VLD_FUNC_SHIFT;
4813         val |= (RX_LOG_PAGE_VLD_PAGE0 | RX_LOG_PAGE_VLD_PAGE1);
4814         nw64(RX_LOG_PAGE_VLD(channel), val);
4815
4816         return 0;
4817 }
4818
4819 static void niu_rx_channel_wred_init(struct niu *np, struct rx_ring_info *rp)
4820 {
4821         u64 val;
4822
4823         val = (((u64)rp->nonsyn_window << RDC_RED_PARA_WIN_SHIFT) |
4824                ((u64)rp->nonsyn_threshold << RDC_RED_PARA_THRE_SHIFT) |
4825                ((u64)rp->syn_window << RDC_RED_PARA_WIN_SYN_SHIFT) |
4826                ((u64)rp->syn_threshold << RDC_RED_PARA_THRE_SYN_SHIFT));
4827         nw64(RDC_RED_PARA(rp->rx_channel), val);
4828 }
4829
4830 static int niu_compute_rbr_cfig_b(struct rx_ring_info *rp, u64 *ret)
4831 {
4832         u64 val = 0;
4833
4834         *ret = 0;
4835         switch (rp->rbr_block_size) {
4836         case 4 * 1024:
4837                 val |= (RBR_BLKSIZE_4K << RBR_CFIG_B_BLKSIZE_SHIFT);
4838                 break;
4839         case 8 * 1024:
4840                 val |= (RBR_BLKSIZE_8K << RBR_CFIG_B_BLKSIZE_SHIFT);
4841                 break;
4842         case 16 * 1024:
4843                 val |= (RBR_BLKSIZE_16K << RBR_CFIG_B_BLKSIZE_SHIFT);
4844                 break;
4845         case 32 * 1024:
4846                 val |= (RBR_BLKSIZE_32K << RBR_CFIG_B_BLKSIZE_SHIFT);
4847                 break;
4848         default:
4849                 return -EINVAL;
4850         }
4851         val |= RBR_CFIG_B_VLD2;
4852         switch (rp->rbr_sizes[2]) {
4853         case 2 * 1024:
4854                 val |= (RBR_BUFSZ2_2K << RBR_CFIG_B_BUFSZ2_SHIFT);
4855                 break;
4856         case 4 * 1024:
4857                 val |= (RBR_BUFSZ2_4K << RBR_CFIG_B_BUFSZ2_SHIFT);
4858                 break;
4859         case 8 * 1024:
4860                 val |= (RBR_BUFSZ2_8K << RBR_CFIG_B_BUFSZ2_SHIFT);
4861                 break;
4862         case 16 * 1024:
4863                 val |= (RBR_BUFSZ2_16K << RBR_CFIG_B_BUFSZ2_SHIFT);
4864                 break;
4865
4866         default:
4867                 return -EINVAL;
4868         }
4869         val |= RBR_CFIG_B_VLD1;
4870         switch (rp->rbr_sizes[1]) {
4871         case 1 * 1024:
4872                 val |= (RBR_BUFSZ1_1K << RBR_CFIG_B_BUFSZ1_SHIFT);
4873                 break;
4874         case 2 * 1024:
4875                 val |= (RBR_BUFSZ1_2K << RBR_CFIG_B_BUFSZ1_SHIFT);
4876                 break;
4877         case 4 * 1024:
4878                 val |= (RBR_BUFSZ1_4K << RBR_CFIG_B_BUFSZ1_SHIFT);
4879                 break;
4880         case 8 * 1024:
4881                 val |= (RBR_BUFSZ1_8K << RBR_CFIG_B_BUFSZ1_SHIFT);
4882                 break;
4883
4884         default:
4885                 return -EINVAL;
4886         }
4887         val |= RBR_CFIG_B_VLD0;
4888         switch (rp->rbr_sizes[0]) {
4889         case 256:
4890                 val |= (RBR_BUFSZ0_256 << RBR_CFIG_B_BUFSZ0_SHIFT);
4891                 break;
4892         case 512:
4893                 val |= (RBR_BUFSZ0_512 << RBR_CFIG_B_BUFSZ0_SHIFT);
4894                 break;
4895         case 1 * 1024:
4896                 val |= (RBR_BUFSZ0_1K << RBR_CFIG_B_BUFSZ0_SHIFT);
4897                 break;
4898         case 2 * 1024:
4899                 val |= (RBR_BUFSZ0_2K << RBR_CFIG_B_BUFSZ0_SHIFT);
4900                 break;
4901
4902         default:
4903                 return -EINVAL;
4904         }
4905
4906         *ret = val;
4907         return 0;
4908 }
4909
4910 static int niu_enable_rx_channel(struct niu *np, int channel, int on)
4911 {
4912         u64 val = nr64(RXDMA_CFIG1(channel));
4913         int limit;
4914
4915         if (on)
4916                 val |= RXDMA_CFIG1_EN;
4917         else
4918                 val &= ~RXDMA_CFIG1_EN;
4919         nw64(RXDMA_CFIG1(channel), val);
4920
4921         limit = 1000;
4922         while (--limit > 0) {
4923                 if (nr64(RXDMA_CFIG1(channel)) & RXDMA_CFIG1_QST)
4924                         break;
4925                 udelay(10);
4926         }
4927         if (limit <= 0)
4928                 return -ENODEV;
4929         return 0;
4930 }
4931
4932 static int niu_init_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
4933 {
4934         int err, channel = rp->rx_channel;
4935         u64 val;
4936
4937         err = niu_rx_channel_reset(np, channel);
4938         if (err)
4939                 return err;
4940
4941         err = niu_rx_channel_lpage_init(np, channel);
4942         if (err)
4943                 return err;
4944
4945         niu_rx_channel_wred_init(np, rp);
4946
4947         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_RBR_EMPTY);
4948         nw64(RX_DMA_CTL_STAT(channel),
4949              (RX_DMA_CTL_STAT_MEX |
4950               RX_DMA_CTL_STAT_RCRTHRES |
4951               RX_DMA_CTL_STAT_RCRTO |
4952               RX_DMA_CTL_STAT_RBR_EMPTY));
4953         nw64(RXDMA_CFIG1(channel), rp->mbox_dma >> 32);
4954         nw64(RXDMA_CFIG2(channel),
4955              ((rp->mbox_dma & RXDMA_CFIG2_MBADDR_L) |
4956               RXDMA_CFIG2_FULL_HDR));
4957         nw64(RBR_CFIG_A(channel),
4958              ((u64)rp->rbr_table_size << RBR_CFIG_A_LEN_SHIFT) |
4959              (rp->rbr_dma & (RBR_CFIG_A_STADDR_BASE | RBR_CFIG_A_STADDR)));
4960         err = niu_compute_rbr_cfig_b(rp, &val);
4961         if (err)
4962                 return err;
4963         nw64(RBR_CFIG_B(channel), val);
4964         nw64(RCRCFIG_A(channel),
4965              ((u64)rp->rcr_table_size << RCRCFIG_A_LEN_SHIFT) |
4966              (rp->rcr_dma & (RCRCFIG_A_STADDR_BASE | RCRCFIG_A_STADDR)));
4967         nw64(RCRCFIG_B(channel),
4968              ((u64)rp->rcr_pkt_threshold << RCRCFIG_B_PTHRES_SHIFT) |
4969              RCRCFIG_B_ENTOUT |
4970              ((u64)rp->rcr_timeout << RCRCFIG_B_TIMEOUT_SHIFT));
4971
4972         err = niu_enable_rx_channel(np, channel, 1);
4973         if (err)
4974                 return err;
4975
4976         nw64(RBR_KICK(channel), rp->rbr_index);
4977
4978         val = nr64(RX_DMA_CTL_STAT(channel));
4979         val |= RX_DMA_CTL_STAT_RBR_EMPTY;
4980         nw64(RX_DMA_CTL_STAT(channel), val);
4981
4982         return 0;
4983 }
4984
4985 static int niu_init_rx_channels(struct niu *np)
4986 {
4987         unsigned long flags;
4988         u64 seed = jiffies_64;
4989         int err, i;
4990
4991         niu_lock_parent(np, flags);
4992         nw64(RX_DMA_CK_DIV, np->parent->rxdma_clock_divider);
4993         nw64(RED_RAN_INIT, RED_RAN_INIT_OPMODE | (seed & RED_RAN_INIT_VAL));
4994         niu_unlock_parent(np, flags);
4995
4996         /* XXX RXDMA 32bit mode? XXX */
4997
4998         niu_init_rdc_groups(np);
4999         niu_init_drr_weight(np);
5000
5001         err = niu_init_hostinfo(np);
5002         if (err)
5003                 return err;
5004
5005         for (i = 0; i < np->num_rx_rings; i++) {
5006                 struct rx_ring_info *rp = &np->rx_rings[i];
5007
5008                 err = niu_init_one_rx_channel(np, rp);
5009                 if (err)
5010                         return err;
5011         }
5012
5013         return 0;
5014 }
5015
5016 static int niu_set_ip_frag_rule(struct niu *np)
5017 {
5018         struct niu_parent *parent = np->parent;
5019         struct niu_classifier *cp = &np->clas;
5020         struct niu_tcam_entry *tp;
5021         int index, err;
5022
5023         index = cp->tcam_top;
5024         tp = &parent->tcam[index];
5025
5026         /* Note that the noport bit is the same in both ipv4 and
5027          * ipv6 format TCAM entries.
5028          */
5029         memset(tp, 0, sizeof(*tp));
5030         tp->key[1] = TCAM_V4KEY1_NOPORT;
5031         tp->key_mask[1] = TCAM_V4KEY1_NOPORT;
5032         tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
5033                           ((u64)0 << TCAM_ASSOCDATA_OFFSET_SHIFT));
5034         err = tcam_write(np, index, tp->key, tp->key_mask);
5035         if (err)
5036                 return err;
5037         err = tcam_assoc_write(np, index, tp->assoc_data);
5038         if (err)
5039                 return err;
5040         tp->valid = 1;
5041         cp->tcam_valid_entries++;
5042
5043         return 0;
5044 }
5045
5046 static int niu_init_classifier_hw(struct niu *np)
5047 {
5048         struct niu_parent *parent = np->parent;
5049         struct niu_classifier *cp = &np->clas;
5050         int i, err;
5051
5052         nw64(H1POLY, cp->h1_init);
5053         nw64(H2POLY, cp->h2_init);
5054
5055         err = niu_init_hostinfo(np);
5056         if (err)
5057                 return err;
5058
5059         for (i = 0; i < ENET_VLAN_TBL_NUM_ENTRIES; i++) {
5060                 struct niu_vlan_rdc *vp = &cp->vlan_mappings[i];
5061
5062                 vlan_tbl_write(np, i, np->port,
5063                                vp->vlan_pref, vp->rdc_num);
5064         }
5065
5066         for (i = 0; i < cp->num_alt_mac_mappings; i++) {
5067                 struct niu_altmac_rdc *ap = &cp->alt_mac_mappings[i];
5068
5069                 err = niu_set_alt_mac_rdc_table(np, ap->alt_mac_num,
5070                                                 ap->rdc_num, ap->mac_pref);
5071                 if (err)
5072                         return err;
5073         }
5074
5075         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
5076                 int index = i - CLASS_CODE_USER_PROG1;
5077
5078                 err = niu_set_tcam_key(np, i, parent->tcam_key[index]);
5079                 if (err)
5080                         return err;
5081                 err = niu_set_flow_key(np, i, parent->flow_key[index]);
5082                 if (err)
5083                         return err;
5084         }
5085
5086         err = niu_set_ip_frag_rule(np);
5087         if (err)
5088                 return err;
5089
5090         tcam_enable(np, 1);
5091
5092         return 0;
5093 }
5094
5095 static int niu_zcp_write(struct niu *np, int index, u64 *data)
5096 {
5097         nw64(ZCP_RAM_DATA0, data[0]);
5098         nw64(ZCP_RAM_DATA1, data[1]);
5099         nw64(ZCP_RAM_DATA2, data[2]);
5100         nw64(ZCP_RAM_DATA3, data[3]);
5101         nw64(ZCP_RAM_DATA4, data[4]);
5102         nw64(ZCP_RAM_BE, ZCP_RAM_BE_VAL);
5103         nw64(ZCP_RAM_ACC,
5104              (ZCP_RAM_ACC_WRITE |
5105               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5106               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5107
5108         return niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5109                                    1000, 100);
5110 }
5111
5112 static int niu_zcp_read(struct niu *np, int index, u64 *data)
5113 {
5114         int err;
5115
5116         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5117                                   1000, 100);
5118         if (err) {
5119                 netdev_err(np->dev, "ZCP read busy won't clear, ZCP_RAM_ACC[%llx]\n",
5120                            (unsigned long long)nr64(ZCP_RAM_ACC));
5121                 return err;
5122         }
5123
5124         nw64(ZCP_RAM_ACC,
5125              (ZCP_RAM_ACC_READ |
5126               (0 << ZCP_RAM_ACC_ZFCID_SHIFT) |
5127               (ZCP_RAM_SEL_CFIFO(np->port) << ZCP_RAM_ACC_RAM_SEL_SHIFT)));
5128
5129         err = niu_wait_bits_clear(np, ZCP_RAM_ACC, ZCP_RAM_ACC_BUSY,
5130                                   1000, 100);
5131         if (err) {
5132                 netdev_err(np->dev, "ZCP read busy2 won't clear, ZCP_RAM_ACC[%llx]\n",
5133                            (unsigned long long)nr64(ZCP_RAM_ACC));
5134                 return err;
5135         }
5136
5137         data[0] = nr64(ZCP_RAM_DATA0);
5138         data[1] = nr64(ZCP_RAM_DATA1);
5139         data[2] = nr64(ZCP_RAM_DATA2);
5140         data[3] = nr64(ZCP_RAM_DATA3);
5141         data[4] = nr64(ZCP_RAM_DATA4);
5142
5143         return 0;
5144 }
5145
5146 static void niu_zcp_cfifo_reset(struct niu *np)
5147 {
5148         u64 val = nr64(RESET_CFIFO);
5149
5150         val |= RESET_CFIFO_RST(np->port);
5151         nw64(RESET_CFIFO, val);
5152         udelay(10);
5153
5154         val &= ~RESET_CFIFO_RST(np->port);
5155         nw64(RESET_CFIFO, val);
5156 }
5157
5158 static int niu_init_zcp(struct niu *np)
5159 {
5160         u64 data[5], rbuf[5];
5161         int i, max, err;
5162
5163         if (np->parent->plat_type != PLAT_TYPE_NIU) {
5164                 if (np->port == 0 || np->port == 1)
5165                         max = ATLAS_P0_P1_CFIFO_ENTRIES;
5166                 else
5167                         max = ATLAS_P2_P3_CFIFO_ENTRIES;
5168         } else
5169                 max = NIU_CFIFO_ENTRIES;
5170
5171         data[0] = 0;
5172         data[1] = 0;
5173         data[2] = 0;
5174         data[3] = 0;
5175         data[4] = 0;
5176
5177         for (i = 0; i < max; i++) {
5178                 err = niu_zcp_write(np, i, data);
5179                 if (err)
5180                         return err;
5181                 err = niu_zcp_read(np, i, rbuf);
5182                 if (err)
5183                         return err;
5184         }
5185
5186         niu_zcp_cfifo_reset(np);
5187         nw64(CFIFO_ECC(np->port), 0);
5188         nw64(ZCP_INT_STAT, ZCP_INT_STAT_ALL);
5189         (void) nr64(ZCP_INT_STAT);
5190         nw64(ZCP_INT_MASK, ZCP_INT_MASK_ALL);
5191
5192         return 0;
5193 }
5194
5195 static void niu_ipp_write(struct niu *np, int index, u64 *data)
5196 {
5197         u64 val = nr64_ipp(IPP_CFIG);
5198
5199         nw64_ipp(IPP_CFIG, val | IPP_CFIG_DFIFO_PIO_W);
5200         nw64_ipp(IPP_DFIFO_WR_PTR, index);
5201         nw64_ipp(IPP_DFIFO_WR0, data[0]);
5202         nw64_ipp(IPP_DFIFO_WR1, data[1]);
5203         nw64_ipp(IPP_DFIFO_WR2, data[2]);
5204         nw64_ipp(IPP_DFIFO_WR3, data[3]);
5205         nw64_ipp(IPP_DFIFO_WR4, data[4]);
5206         nw64_ipp(IPP_CFIG, val & ~IPP_CFIG_DFIFO_PIO_W);
5207 }
5208
5209 static void niu_ipp_read(struct niu *np, int index, u64 *data)
5210 {
5211         nw64_ipp(IPP_DFIFO_RD_PTR, index);
5212         data[0] = nr64_ipp(IPP_DFIFO_RD0);
5213         data[1] = nr64_ipp(IPP_DFIFO_RD1);
5214         data[2] = nr64_ipp(IPP_DFIFO_RD2);
5215         data[3] = nr64_ipp(IPP_DFIFO_RD3);
5216         data[4] = nr64_ipp(IPP_DFIFO_RD4);
5217 }
5218
5219 static int niu_ipp_reset(struct niu *np)
5220 {
5221         return niu_set_and_wait_clear_ipp(np, IPP_CFIG, IPP_CFIG_SOFT_RST,
5222                                           1000, 100, "IPP_CFIG");
5223 }
5224
5225 static int niu_init_ipp(struct niu *np)
5226 {
5227         u64 data[5], rbuf[5], val;
5228         int i, max, err;
5229
5230         if (np->parent->plat_type != PLAT_TYPE_NIU) {
5231                 if (np->port == 0 || np->port == 1)
5232                         max = ATLAS_P0_P1_DFIFO_ENTRIES;
5233                 else
5234                         max = ATLAS_P2_P3_DFIFO_ENTRIES;
5235         } else
5236                 max = NIU_DFIFO_ENTRIES;
5237
5238         data[0] = 0;
5239         data[1] = 0;
5240         data[2] = 0;
5241         data[3] = 0;
5242         data[4] = 0;
5243
5244         for (i = 0; i < max; i++) {
5245                 niu_ipp_write(np, i, data);
5246                 niu_ipp_read(np, i, rbuf);
5247         }
5248
5249         (void) nr64_ipp(IPP_INT_STAT);
5250         (void) nr64_ipp(IPP_INT_STAT);
5251
5252         err = niu_ipp_reset(np);
5253         if (err)
5254                 return err;
5255
5256         (void) nr64_ipp(IPP_PKT_DIS);
5257         (void) nr64_ipp(IPP_BAD_CS_CNT);
5258         (void) nr64_ipp(IPP_ECC);
5259
5260         (void) nr64_ipp(IPP_INT_STAT);
5261
5262         nw64_ipp(IPP_MSK, ~IPP_MSK_ALL);
5263
5264         val = nr64_ipp(IPP_CFIG);
5265         val &= ~IPP_CFIG_IP_MAX_PKT;
5266         val |= (IPP_CFIG_IPP_ENABLE |
5267                 IPP_CFIG_DFIFO_ECC_EN |
5268                 IPP_CFIG_DROP_BAD_CRC |
5269                 IPP_CFIG_CKSUM_EN |
5270                 (0x1ffff << IPP_CFIG_IP_MAX_PKT_SHIFT));
5271         nw64_ipp(IPP_CFIG, val);
5272
5273         return 0;
5274 }
5275
5276 static void niu_handle_led(struct niu *np, int status)
5277 {
5278         u64 val;
5279         val = nr64_mac(XMAC_CONFIG);
5280
5281         if ((np->flags & NIU_FLAGS_10G) != 0 &&
5282             (np->flags & NIU_FLAGS_FIBER) != 0) {
5283                 if (status) {
5284                         val |= XMAC_CONFIG_LED_POLARITY;
5285                         val &= ~XMAC_CONFIG_FORCE_LED_ON;
5286                 } else {
5287                         val |= XMAC_CONFIG_FORCE_LED_ON;
5288                         val &= ~XMAC_CONFIG_LED_POLARITY;
5289                 }
5290         }
5291
5292         nw64_mac(XMAC_CONFIG, val);
5293 }
5294
5295 static void niu_init_xif_xmac(struct niu *np)
5296 {
5297         struct niu_link_config *lp = &np->link_config;
5298         u64 val;
5299
5300         if (np->flags & NIU_FLAGS_XCVR_SERDES) {
5301                 val = nr64(MIF_CONFIG);
5302                 val |= MIF_CONFIG_ATCA_GE;
5303                 nw64(MIF_CONFIG, val);
5304         }
5305
5306         val = nr64_mac(XMAC_CONFIG);
5307         val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5308
5309         val |= XMAC_CONFIG_TX_OUTPUT_EN;
5310
5311         if (lp->loopback_mode == LOOPBACK_MAC) {
5312                 val &= ~XMAC_CONFIG_SEL_POR_CLK_SRC;
5313                 val |= XMAC_CONFIG_LOOPBACK;
5314         } else {
5315                 val &= ~XMAC_CONFIG_LOOPBACK;
5316         }
5317
5318         if (np->flags & NIU_FLAGS_10G) {
5319                 val &= ~XMAC_CONFIG_LFS_DISABLE;
5320         } else {
5321                 val |= XMAC_CONFIG_LFS_DISABLE;
5322                 if (!(np->flags & NIU_FLAGS_FIBER) &&
5323                     !(np->flags & NIU_FLAGS_XCVR_SERDES))
5324                         val |= XMAC_CONFIG_1G_PCS_BYPASS;
5325                 else
5326                         val &= ~XMAC_CONFIG_1G_PCS_BYPASS;
5327         }
5328
5329         val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5330
5331         if (lp->active_speed == SPEED_100)
5332                 val |= XMAC_CONFIG_SEL_CLK_25MHZ;
5333         else
5334                 val &= ~XMAC_CONFIG_SEL_CLK_25MHZ;
5335
5336         nw64_mac(XMAC_CONFIG, val);
5337
5338         val = nr64_mac(XMAC_CONFIG);
5339         val &= ~XMAC_CONFIG_MODE_MASK;
5340         if (np->flags & NIU_FLAGS_10G) {
5341                 val |= XMAC_CONFIG_MODE_XGMII;
5342         } else {
5343                 if (lp->active_speed == SPEED_1000)
5344                         val |= XMAC_CONFIG_MODE_GMII;
5345                 else
5346                         val |= XMAC_CONFIG_MODE_MII;
5347         }
5348
5349         nw64_mac(XMAC_CONFIG, val);
5350 }
5351
5352 static void niu_init_xif_bmac(struct niu *np)
5353 {
5354         struct niu_link_config *lp = &np->link_config;
5355         u64 val;
5356
5357         val = BMAC_XIF_CONFIG_TX_OUTPUT_EN;
5358
5359         if (lp->loopback_mode == LOOPBACK_MAC)
5360                 val |= BMAC_XIF_CONFIG_MII_LOOPBACK;
5361         else
5362                 val &= ~BMAC_XIF_CONFIG_MII_LOOPBACK;
5363
5364         if (lp->active_speed == SPEED_1000)
5365                 val |= BMAC_XIF_CONFIG_GMII_MODE;
5366         else
5367                 val &= ~BMAC_XIF_CONFIG_GMII_MODE;
5368
5369         val &= ~(BMAC_XIF_CONFIG_LINK_LED |
5370                  BMAC_XIF_CONFIG_LED_POLARITY);
5371
5372         if (!(np->flags & NIU_FLAGS_10G) &&
5373             !(np->flags & NIU_FLAGS_FIBER) &&
5374             lp->active_speed == SPEED_100)
5375                 val |= BMAC_XIF_CONFIG_25MHZ_CLOCK;
5376         else
5377                 val &= ~BMAC_XIF_CONFIG_25MHZ_CLOCK;
5378
5379         nw64_mac(BMAC_XIF_CONFIG, val);
5380 }
5381
5382 static void niu_init_xif(struct niu *np)
5383 {
5384         if (np->flags & NIU_FLAGS_XMAC)
5385                 niu_init_xif_xmac(np);
5386         else
5387                 niu_init_xif_bmac(np);
5388 }
5389
5390 static void niu_pcs_mii_reset(struct niu *np)
5391 {
5392         int limit = 1000;
5393         u64 val = nr64_pcs(PCS_MII_CTL);
5394         val |= PCS_MII_CTL_RST;
5395         nw64_pcs(PCS_MII_CTL, val);
5396         while ((--limit >= 0) && (val & PCS_MII_CTL_RST)) {
5397                 udelay(100);
5398                 val = nr64_pcs(PCS_MII_CTL);
5399         }
5400 }
5401
5402 static void niu_xpcs_reset(struct niu *np)
5403 {
5404         int limit = 1000;
5405         u64 val = nr64_xpcs(XPCS_CONTROL1);
5406         val |= XPCS_CONTROL1_RESET;
5407         nw64_xpcs(XPCS_CONTROL1, val);
5408         while ((--limit >= 0) && (val & XPCS_CONTROL1_RESET)) {
5409                 udelay(100);
5410                 val = nr64_xpcs(XPCS_CONTROL1);
5411         }
5412 }
5413
5414 static int niu_init_pcs(struct niu *np)
5415 {
5416         struct niu_link_config *lp = &np->link_config;
5417         u64 val;
5418
5419         switch (np->flags & (NIU_FLAGS_10G |
5420                              NIU_FLAGS_FIBER |
5421                              NIU_FLAGS_XCVR_SERDES)) {
5422         case NIU_FLAGS_FIBER:
5423                 /* 1G fiber */
5424                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5425                 nw64_pcs(PCS_DPATH_MODE, 0);
5426                 niu_pcs_mii_reset(np);
5427                 break;
5428
5429         case NIU_FLAGS_10G:
5430         case NIU_FLAGS_10G | NIU_FLAGS_FIBER:
5431         case NIU_FLAGS_10G | NIU_FLAGS_XCVR_SERDES:
5432                 /* 10G SERDES */
5433                 if (!(np->flags & NIU_FLAGS_XMAC))
5434                         return -EINVAL;
5435
5436                 /* 10G copper or fiber */
5437                 val = nr64_mac(XMAC_CONFIG);
5438                 val &= ~XMAC_CONFIG_10G_XPCS_BYPASS;
5439                 nw64_mac(XMAC_CONFIG, val);
5440
5441                 niu_xpcs_reset(np);
5442
5443                 val = nr64_xpcs(XPCS_CONTROL1);
5444                 if (lp->loopback_mode == LOOPBACK_PHY)
5445                         val |= XPCS_CONTROL1_LOOPBACK;
5446                 else
5447                         val &= ~XPCS_CONTROL1_LOOPBACK;
5448                 nw64_xpcs(XPCS_CONTROL1, val);
5449
5450                 nw64_xpcs(XPCS_DESKEW_ERR_CNT, 0);
5451                 (void) nr64_xpcs(XPCS_SYMERR_CNT01);
5452                 (void) nr64_xpcs(XPCS_SYMERR_CNT23);
5453                 break;
5454
5455
5456         case NIU_FLAGS_XCVR_SERDES:
5457                 /* 1G SERDES */
5458                 niu_pcs_mii_reset(np);
5459                 nw64_pcs(PCS_CONF, PCS_CONF_MASK | PCS_CONF_ENABLE);
5460                 nw64_pcs(PCS_DPATH_MODE, 0);
5461                 break;
5462
5463         case 0:
5464                 /* 1G copper */
5465         case NIU_FLAGS_XCVR_SERDES | NIU_FLAGS_FIBER:
5466                 /* 1G RGMII FIBER */
5467                 nw64_pcs(PCS_DPATH_MODE, PCS_DPATH_MODE_MII);
5468                 niu_pcs_mii_reset(np);
5469                 break;
5470
5471         default:
5472                 return -EINVAL;
5473         }
5474
5475         return 0;
5476 }
5477
5478 static int niu_reset_tx_xmac(struct niu *np)
5479 {
5480         return niu_set_and_wait_clear_mac(np, XTXMAC_SW_RST,
5481                                           (XTXMAC_SW_RST_REG_RS |
5482                                            XTXMAC_SW_RST_SOFT_RST),
5483                                           1000, 100, "XTXMAC_SW_RST");
5484 }
5485
5486 static int niu_reset_tx_bmac(struct niu *np)
5487 {
5488         int limit;
5489
5490         nw64_mac(BTXMAC_SW_RST, BTXMAC_SW_RST_RESET);
5491         limit = 1000;
5492         while (--limit >= 0) {
5493                 if (!(nr64_mac(BTXMAC_SW_RST) & BTXMAC_SW_RST_RESET))
5494                         break;
5495                 udelay(100);
5496         }
5497         if (limit < 0) {
5498                 dev_err(np->device, "Port %u TX BMAC would not reset, BTXMAC_SW_RST[%llx]\n",
5499                         np->port,
5500                         (unsigned long long) nr64_mac(BTXMAC_SW_RST));
5501                 return -ENODEV;
5502         }
5503
5504         return 0;
5505 }
5506
5507 static int niu_reset_tx_mac(struct niu *np)
5508 {
5509         if (np->flags & NIU_FLAGS_XMAC)
5510                 return niu_reset_tx_xmac(np);
5511         else
5512                 return niu_reset_tx_bmac(np);
5513 }
5514
5515 static void niu_init_tx_xmac(struct niu *np, u64 min, u64 max)
5516 {
5517         u64 val;
5518
5519         val = nr64_mac(XMAC_MIN);
5520         val &= ~(XMAC_MIN_TX_MIN_PKT_SIZE |
5521                  XMAC_MIN_RX_MIN_PKT_SIZE);
5522         val |= (min << XMAC_MIN_RX_MIN_PKT_SIZE_SHFT);
5523         val |= (min << XMAC_MIN_TX_MIN_PKT_SIZE_SHFT);
5524         nw64_mac(XMAC_MIN, val);
5525
5526         nw64_mac(XMAC_MAX, max);
5527
5528         nw64_mac(XTXMAC_STAT_MSK, ~(u64)0);
5529
5530         val = nr64_mac(XMAC_IPG);
5531         if (np->flags & NIU_FLAGS_10G) {
5532                 val &= ~XMAC_IPG_IPG_XGMII;
5533                 val |= (IPG_12_15_XGMII << XMAC_IPG_IPG_XGMII_SHIFT);
5534         } else {
5535                 val &= ~XMAC_IPG_IPG_MII_GMII;
5536                 val |= (IPG_12_MII_GMII << XMAC_IPG_IPG_MII_GMII_SHIFT);
5537         }
5538         nw64_mac(XMAC_IPG, val);
5539
5540         val = nr64_mac(XMAC_CONFIG);
5541         val &= ~(XMAC_CONFIG_ALWAYS_NO_CRC |
5542                  XMAC_CONFIG_STRETCH_MODE |
5543                  XMAC_CONFIG_VAR_MIN_IPG_EN |
5544                  XMAC_CONFIG_TX_ENABLE);
5545         nw64_mac(XMAC_CONFIG, val);
5546
5547         nw64_mac(TXMAC_FRM_CNT, 0);
5548         nw64_mac(TXMAC_BYTE_CNT, 0);
5549 }
5550
5551 static void niu_init_tx_bmac(struct niu *np, u64 min, u64 max)
5552 {
5553         u64 val;
5554
5555         nw64_mac(BMAC_MIN_FRAME, min);
5556         nw64_mac(BMAC_MAX_FRAME, max);
5557
5558         nw64_mac(BTXMAC_STATUS_MASK, ~(u64)0);
5559         nw64_mac(BMAC_CTRL_TYPE, 0x8808);
5560         nw64_mac(BMAC_PREAMBLE_SIZE, 7);
5561
5562         val = nr64_mac(BTXMAC_CONFIG);
5563         val &= ~(BTXMAC_CONFIG_FCS_DISABLE |
5564                  BTXMAC_CONFIG_ENABLE);
5565         nw64_mac(BTXMAC_CONFIG, val);
5566 }
5567
5568 static void niu_init_tx_mac(struct niu *np)
5569 {
5570         u64 min, max;
5571
5572         min = 64;
5573         if (np->dev->mtu > ETH_DATA_LEN)
5574                 max = 9216;
5575         else
5576                 max = 1522;
5577
5578         /* The XMAC_MIN register only accepts values for TX min which
5579          * have the low 3 bits cleared.
5580          */
5581         BUG_ON(min & 0x7);
5582
5583         if (np->flags & NIU_FLAGS_XMAC)
5584                 niu_init_tx_xmac(np, min, max);
5585         else
5586                 niu_init_tx_bmac(np, min, max);
5587 }
5588
5589 static int niu_reset_rx_xmac(struct niu *np)
5590 {
5591         int limit;
5592
5593         nw64_mac(XRXMAC_SW_RST,
5594                  XRXMAC_SW_RST_REG_RS | XRXMAC_SW_RST_SOFT_RST);
5595         limit = 1000;
5596         while (--limit >= 0) {
5597                 if (!(nr64_mac(XRXMAC_SW_RST) & (XRXMAC_SW_RST_REG_RS |
5598                                                  XRXMAC_SW_RST_SOFT_RST)))
5599                         break;
5600                 udelay(100);
5601         }
5602         if (limit < 0) {
5603                 dev_err(np->device, "Port %u RX XMAC would not reset, XRXMAC_SW_RST[%llx]\n",
5604                         np->port,
5605                         (unsigned long long) nr64_mac(XRXMAC_SW_RST));
5606                 return -ENODEV;
5607         }
5608
5609         return 0;
5610 }
5611
5612 static int niu_reset_rx_bmac(struct niu *np)
5613 {
5614         int limit;
5615
5616         nw64_mac(BRXMAC_SW_RST, BRXMAC_SW_RST_RESET);
5617         limit = 1000;
5618         while (--limit >= 0) {
5619                 if (!(nr64_mac(BRXMAC_SW_RST) & BRXMAC_SW_RST_RESET))
5620                         break;
5621                 udelay(100);
5622         }
5623         if (limit < 0) {
5624                 dev_err(np->device, "Port %u RX BMAC would not reset, BRXMAC_SW_RST[%llx]\n",
5625                         np->port,
5626                         (unsigned long long) nr64_mac(BRXMAC_SW_RST));
5627                 return -ENODEV;
5628         }
5629
5630         return 0;
5631 }
5632
5633 static int niu_reset_rx_mac(struct niu *np)
5634 {
5635         if (np->flags & NIU_FLAGS_XMAC)
5636                 return niu_reset_rx_xmac(np);
5637         else
5638                 return niu_reset_rx_bmac(np);
5639 }
5640
5641 static void niu_init_rx_xmac(struct niu *np)
5642 {
5643         struct niu_parent *parent = np->parent;
5644         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5645         int first_rdc_table = tp->first_table_num;
5646         unsigned long i;
5647         u64 val;
5648
5649         nw64_mac(XMAC_ADD_FILT0, 0);
5650         nw64_mac(XMAC_ADD_FILT1, 0);
5651         nw64_mac(XMAC_ADD_FILT2, 0);
5652         nw64_mac(XMAC_ADD_FILT12_MASK, 0);
5653         nw64_mac(XMAC_ADD_FILT00_MASK, 0);
5654         for (i = 0; i < MAC_NUM_HASH; i++)
5655                 nw64_mac(XMAC_HASH_TBL(i), 0);
5656         nw64_mac(XRXMAC_STAT_MSK, ~(u64)0);
5657         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5658         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5659
5660         val = nr64_mac(XMAC_CONFIG);
5661         val &= ~(XMAC_CONFIG_RX_MAC_ENABLE |
5662                  XMAC_CONFIG_PROMISCUOUS |
5663                  XMAC_CONFIG_PROMISC_GROUP |
5664                  XMAC_CONFIG_ERR_CHK_DIS |
5665                  XMAC_CONFIG_RX_CRC_CHK_DIS |
5666                  XMAC_CONFIG_RESERVED_MULTICAST |
5667                  XMAC_CONFIG_RX_CODEV_CHK_DIS |
5668                  XMAC_CONFIG_ADDR_FILTER_EN |
5669                  XMAC_CONFIG_RCV_PAUSE_ENABLE |
5670                  XMAC_CONFIG_STRIP_CRC |
5671                  XMAC_CONFIG_PASS_FLOW_CTRL |
5672                  XMAC_CONFIG_MAC2IPP_PKT_CNT_EN);
5673         val |= (XMAC_CONFIG_HASH_FILTER_EN);
5674         nw64_mac(XMAC_CONFIG, val);
5675
5676         nw64_mac(RXMAC_BT_CNT, 0);
5677         nw64_mac(RXMAC_BC_FRM_CNT, 0);
5678         nw64_mac(RXMAC_MC_FRM_CNT, 0);
5679         nw64_mac(RXMAC_FRAG_CNT, 0);
5680         nw64_mac(RXMAC_HIST_CNT1, 0);
5681         nw64_mac(RXMAC_HIST_CNT2, 0);
5682         nw64_mac(RXMAC_HIST_CNT3, 0);
5683         nw64_mac(RXMAC_HIST_CNT4, 0);
5684         nw64_mac(RXMAC_HIST_CNT5, 0);
5685         nw64_mac(RXMAC_HIST_CNT6, 0);
5686         nw64_mac(RXMAC_HIST_CNT7, 0);
5687         nw64_mac(RXMAC_MPSZER_CNT, 0);
5688         nw64_mac(RXMAC_CRC_ER_CNT, 0);
5689         nw64_mac(RXMAC_CD_VIO_CNT, 0);
5690         nw64_mac(LINK_FAULT_CNT, 0);
5691 }
5692
5693 static void niu_init_rx_bmac(struct niu *np)
5694 {
5695         struct niu_parent *parent = np->parent;
5696         struct niu_rdc_tables *tp = &parent->rdc_group_cfg[np->port];
5697         int first_rdc_table = tp->first_table_num;
5698         unsigned long i;
5699         u64 val;
5700
5701         nw64_mac(BMAC_ADD_FILT0, 0);
5702         nw64_mac(BMAC_ADD_FILT1, 0);
5703         nw64_mac(BMAC_ADD_FILT2, 0);
5704         nw64_mac(BMAC_ADD_FILT12_MASK, 0);
5705         nw64_mac(BMAC_ADD_FILT00_MASK, 0);
5706         for (i = 0; i < MAC_NUM_HASH; i++)
5707                 nw64_mac(BMAC_HASH_TBL(i), 0);
5708         niu_set_primary_mac_rdc_table(np, first_rdc_table, 1);
5709         niu_set_multicast_mac_rdc_table(np, first_rdc_table, 1);
5710         nw64_mac(BRXMAC_STATUS_MASK, ~(u64)0);
5711
5712         val = nr64_mac(BRXMAC_CONFIG);
5713         val &= ~(BRXMAC_CONFIG_ENABLE |
5714                  BRXMAC_CONFIG_STRIP_PAD |
5715                  BRXMAC_CONFIG_STRIP_FCS |
5716                  BRXMAC_CONFIG_PROMISC |
5717                  BRXMAC_CONFIG_PROMISC_GRP |
5718                  BRXMAC_CONFIG_ADDR_FILT_EN |
5719                  BRXMAC_CONFIG_DISCARD_DIS);
5720         val |= (BRXMAC_CONFIG_HASH_FILT_EN);
5721         nw64_mac(BRXMAC_CONFIG, val);
5722
5723         val = nr64_mac(BMAC_ADDR_CMPEN);
5724         val |= BMAC_ADDR_CMPEN_EN0;
5725         nw64_mac(BMAC_ADDR_CMPEN, val);
5726 }
5727
5728 static void niu_init_rx_mac(struct niu *np)
5729 {
5730         niu_set_primary_mac(np, np->dev->dev_addr);
5731
5732         if (np->flags & NIU_FLAGS_XMAC)
5733                 niu_init_rx_xmac(np);
5734         else
5735                 niu_init_rx_bmac(np);
5736 }
5737
5738 static void niu_enable_tx_xmac(struct niu *np, int on)
5739 {
5740         u64 val = nr64_mac(XMAC_CONFIG);
5741
5742         if (on)
5743                 val |= XMAC_CONFIG_TX_ENABLE;
5744         else
5745                 val &= ~XMAC_CONFIG_TX_ENABLE;
5746         nw64_mac(XMAC_CONFIG, val);
5747 }
5748
5749 static void niu_enable_tx_bmac(struct niu *np, int on)
5750 {
5751         u64 val = nr64_mac(BTXMAC_CONFIG);
5752
5753         if (on)
5754                 val |= BTXMAC_CONFIG_ENABLE;
5755         else
5756                 val &= ~BTXMAC_CONFIG_ENABLE;
5757         nw64_mac(BTXMAC_CONFIG, val);
5758 }
5759
5760 static void niu_enable_tx_mac(struct niu *np, int on)
5761 {
5762         if (np->flags & NIU_FLAGS_XMAC)
5763                 niu_enable_tx_xmac(np, on);
5764         else
5765                 niu_enable_tx_bmac(np, on);
5766 }
5767
5768 static void niu_enable_rx_xmac(struct niu *np, int on)
5769 {
5770         u64 val = nr64_mac(XMAC_CONFIG);
5771
5772         val &= ~(XMAC_CONFIG_HASH_FILTER_EN |
5773                  XMAC_CONFIG_PROMISCUOUS);
5774
5775         if (np->flags & NIU_FLAGS_MCAST)
5776                 val |= XMAC_CONFIG_HASH_FILTER_EN;
5777         if (np->flags & NIU_FLAGS_PROMISC)
5778                 val |= XMAC_CONFIG_PROMISCUOUS;
5779
5780         if (on)
5781                 val |= XMAC_CONFIG_RX_MAC_ENABLE;
5782         else
5783                 val &= ~XMAC_CONFIG_RX_MAC_ENABLE;
5784         nw64_mac(XMAC_CONFIG, val);
5785 }
5786
5787 static void niu_enable_rx_bmac(struct niu *np, int on)
5788 {
5789         u64 val = nr64_mac(BRXMAC_CONFIG);
5790
5791         val &= ~(BRXMAC_CONFIG_HASH_FILT_EN |
5792                  BRXMAC_CONFIG_PROMISC);
5793
5794         if (np->flags & NIU_FLAGS_MCAST)
5795                 val |= BRXMAC_CONFIG_HASH_FILT_EN;
5796         if (np->flags & NIU_FLAGS_PROMISC)
5797                 val |= BRXMAC_CONFIG_PROMISC;
5798
5799         if (on)
5800                 val |= BRXMAC_CONFIG_ENABLE;
5801         else
5802                 val &= ~BRXMAC_CONFIG_ENABLE;
5803         nw64_mac(BRXMAC_CONFIG, val);
5804 }
5805
5806 static void niu_enable_rx_mac(struct niu *np, int on)
5807 {
5808         if (np->flags & NIU_FLAGS_XMAC)
5809                 niu_enable_rx_xmac(np, on);
5810         else
5811                 niu_enable_rx_bmac(np, on);
5812 }
5813
5814 static int niu_init_mac(struct niu *np)
5815 {
5816         int err;
5817
5818         niu_init_xif(np);
5819         err = niu_init_pcs(np);
5820         if (err)
5821                 return err;
5822
5823         err = niu_reset_tx_mac(np);
5824         if (err)
5825                 return err;
5826         niu_init_tx_mac(np);
5827         err = niu_reset_rx_mac(np);
5828         if (err)
5829                 return err;
5830         niu_init_rx_mac(np);
5831
5832         /* This looks hookey but the RX MAC reset we just did will
5833          * undo some of the state we setup in niu_init_tx_mac() so we
5834          * have to call it again.  In particular, the RX MAC reset will
5835          * set the XMAC_MAX register back to it's default value.
5836          */
5837         niu_init_tx_mac(np);
5838         niu_enable_tx_mac(np, 1);
5839
5840         niu_enable_rx_mac(np, 1);
5841
5842         return 0;
5843 }
5844
5845 static void niu_stop_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5846 {
5847         (void) niu_tx_channel_stop(np, rp->tx_channel);
5848 }
5849
5850 static void niu_stop_tx_channels(struct niu *np)
5851 {
5852         int i;
5853
5854         for (i = 0; i < np->num_tx_rings; i++) {
5855                 struct tx_ring_info *rp = &np->tx_rings[i];
5856
5857                 niu_stop_one_tx_channel(np, rp);
5858         }
5859 }
5860
5861 static void niu_reset_one_tx_channel(struct niu *np, struct tx_ring_info *rp)
5862 {
5863         (void) niu_tx_channel_reset(np, rp->tx_channel);
5864 }
5865
5866 static void niu_reset_tx_channels(struct niu *np)
5867 {
5868         int i;
5869
5870         for (i = 0; i < np->num_tx_rings; i++) {
5871                 struct tx_ring_info *rp = &np->tx_rings[i];
5872
5873                 niu_reset_one_tx_channel(np, rp);
5874         }
5875 }
5876
5877 static void niu_stop_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5878 {
5879         (void) niu_enable_rx_channel(np, rp->rx_channel, 0);
5880 }
5881
5882 static void niu_stop_rx_channels(struct niu *np)
5883 {
5884         int i;
5885
5886         for (i = 0; i < np->num_rx_rings; i++) {
5887                 struct rx_ring_info *rp = &np->rx_rings[i];
5888
5889                 niu_stop_one_rx_channel(np, rp);
5890         }
5891 }
5892
5893 static void niu_reset_one_rx_channel(struct niu *np, struct rx_ring_info *rp)
5894 {
5895         int channel = rp->rx_channel;
5896
5897         (void) niu_rx_channel_reset(np, channel);
5898         nw64(RX_DMA_ENT_MSK(channel), RX_DMA_ENT_MSK_ALL);
5899         nw64(RX_DMA_CTL_STAT(channel), 0);
5900         (void) niu_enable_rx_channel(np, channel, 0);
5901 }
5902
5903 static void niu_reset_rx_channels(struct niu *np)
5904 {
5905         int i;
5906
5907         for (i = 0; i < np->num_rx_rings; i++) {
5908                 struct rx_ring_info *rp = &np->rx_rings[i];
5909
5910                 niu_reset_one_rx_channel(np, rp);
5911         }
5912 }
5913
5914 static void niu_disable_ipp(struct niu *np)
5915 {
5916         u64 rd, wr, val;
5917         int limit;
5918
5919         rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5920         wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5921         limit = 100;
5922         while (--limit >= 0 && (rd != wr)) {
5923                 rd = nr64_ipp(IPP_DFIFO_RD_PTR);
5924                 wr = nr64_ipp(IPP_DFIFO_WR_PTR);
5925         }
5926         if (limit < 0 &&
5927             (rd != 0 && wr != 1)) {
5928                 netdev_err(np->dev, "IPP would not quiesce, rd_ptr[%llx] wr_ptr[%llx]\n",
5929                            (unsigned long long)nr64_ipp(IPP_DFIFO_RD_PTR),
5930                            (unsigned long long)nr64_ipp(IPP_DFIFO_WR_PTR));
5931         }
5932
5933         val = nr64_ipp(IPP_CFIG);
5934         val &= ~(IPP_CFIG_IPP_ENABLE |
5935                  IPP_CFIG_DFIFO_ECC_EN |
5936                  IPP_CFIG_DROP_BAD_CRC |
5937                  IPP_CFIG_CKSUM_EN);
5938         nw64_ipp(IPP_CFIG, val);
5939
5940         (void) niu_ipp_reset(np);
5941 }
5942
5943 static int niu_init_hw(struct niu *np)
5944 {
5945         int i, err;
5946
5947         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TXC\n");
5948         niu_txc_enable_port(np, 1);
5949         niu_txc_port_dma_enable(np, 1);
5950         niu_txc_set_imask(np, 0);
5951
5952         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize TX channels\n");
5953         for (i = 0; i < np->num_tx_rings; i++) {
5954                 struct tx_ring_info *rp = &np->tx_rings[i];
5955
5956                 err = niu_init_one_tx_channel(np, rp);
5957                 if (err)
5958                         return err;
5959         }
5960
5961         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize RX channels\n");
5962         err = niu_init_rx_channels(np);
5963         if (err)
5964                 goto out_uninit_tx_channels;
5965
5966         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize classifier\n");
5967         err = niu_init_classifier_hw(np);
5968         if (err)
5969                 goto out_uninit_rx_channels;
5970
5971         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize ZCP\n");
5972         err = niu_init_zcp(np);
5973         if (err)
5974                 goto out_uninit_rx_channels;
5975
5976         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize IPP\n");
5977         err = niu_init_ipp(np);
5978         if (err)
5979                 goto out_uninit_rx_channels;
5980
5981         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Initialize MAC\n");
5982         err = niu_init_mac(np);
5983         if (err)
5984                 goto out_uninit_ipp;
5985
5986         return 0;
5987
5988 out_uninit_ipp:
5989         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit IPP\n");
5990         niu_disable_ipp(np);
5991
5992 out_uninit_rx_channels:
5993         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit RX channels\n");
5994         niu_stop_rx_channels(np);
5995         niu_reset_rx_channels(np);
5996
5997 out_uninit_tx_channels:
5998         netif_printk(np, ifup, KERN_DEBUG, np->dev, "Uninit TX channels\n");
5999         niu_stop_tx_channels(np);
6000         niu_reset_tx_channels(np);
6001
6002         return err;
6003 }
6004
6005 static void niu_stop_hw(struct niu *np)
6006 {
6007         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable interrupts\n");
6008         niu_enable_interrupts(np, 0);
6009
6010         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable RX MAC\n");
6011         niu_enable_rx_mac(np, 0);
6012
6013         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Disable IPP\n");
6014         niu_disable_ipp(np);
6015
6016         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop TX channels\n");
6017         niu_stop_tx_channels(np);
6018
6019         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Stop RX channels\n");
6020         niu_stop_rx_channels(np);
6021
6022         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset TX channels\n");
6023         niu_reset_tx_channels(np);
6024
6025         netif_printk(np, ifdown, KERN_DEBUG, np->dev, "Reset RX channels\n");
6026         niu_reset_rx_channels(np);
6027 }
6028
6029 static void niu_set_irq_name(struct niu *np)
6030 {
6031         int port = np->port;
6032         int i, j = 1;
6033
6034         sprintf(np->irq_name[0], "%s:MAC", np->dev->name);
6035
6036         if (port == 0) {
6037                 sprintf(np->irq_name[1], "%s:MIF", np->dev->name);
6038                 sprintf(np->irq_name[2], "%s:SYSERR", np->dev->name);
6039                 j = 3;
6040         }
6041
6042         for (i = 0; i < np->num_ldg - j; i++) {
6043                 if (i < np->num_rx_rings)
6044                         sprintf(np->irq_name[i+j], "%s-rx-%d",
6045                                 np->dev->name, i);
6046                 else if (i < np->num_tx_rings + np->num_rx_rings)
6047                         sprintf(np->irq_name[i+j], "%s-tx-%d", np->dev->name,
6048                                 i - np->num_rx_rings);
6049         }
6050 }
6051
6052 static int niu_request_irq(struct niu *np)
6053 {
6054         int i, j, err;
6055
6056         niu_set_irq_name(np);
6057
6058         err = 0;
6059         for (i = 0; i < np->num_ldg; i++) {
6060                 struct niu_ldg *lp = &np->ldg[i];
6061
6062                 err = request_irq(lp->irq, niu_interrupt,
6063                                   IRQF_SHARED | IRQF_SAMPLE_RANDOM,
6064                                   np->irq_name[i], lp);
6065                 if (err)
6066                         goto out_free_irqs;
6067
6068         }
6069
6070         return 0;
6071
6072 out_free_irqs:
6073         for (j = 0; j < i; j++) {
6074                 struct niu_ldg *lp = &np->ldg[j];
6075
6076                 free_irq(lp->irq, lp);
6077         }
6078         return err;
6079 }
6080
6081 static void niu_free_irq(struct niu *np)
6082 {
6083         int i;
6084
6085         for (i = 0; i < np->num_ldg; i++) {
6086                 struct niu_ldg *lp = &np->ldg[i];
6087
6088                 free_irq(lp->irq, lp);
6089         }
6090 }
6091
6092 static void niu_enable_napi(struct niu *np)
6093 {
6094         int i;
6095
6096         for (i = 0; i < np->num_ldg; i++)
6097                 napi_enable(&np->ldg[i].napi);
6098 }
6099
6100 static void niu_disable_napi(struct niu *np)
6101 {
6102         int i;
6103
6104         for (i = 0; i < np->num_ldg; i++)
6105                 napi_disable(&np->ldg[i].napi);
6106 }
6107
6108 static int niu_open(struct net_device *dev)
6109 {
6110         struct niu *np = netdev_priv(dev);
6111         int err;
6112
6113         netif_carrier_off(dev);
6114
6115         err = niu_alloc_channels(np);
6116         if (err)
6117                 goto out_err;
6118
6119         err = niu_enable_interrupts(np, 0);
6120         if (err)
6121                 goto out_free_channels;
6122
6123         err = niu_request_irq(np);
6124         if (err)
6125                 goto out_free_channels;
6126
6127         niu_enable_napi(np);
6128
6129         spin_lock_irq(&np->lock);
6130
6131         err = niu_init_hw(np);
6132         if (!err) {
6133                 init_timer(&np->timer);
6134                 np->timer.expires = jiffies + HZ;
6135                 np->timer.data = (unsigned long) np;
6136                 np->timer.function = niu_timer;
6137
6138                 err = niu_enable_interrupts(np, 1);
6139                 if (err)
6140                         niu_stop_hw(np);
6141         }
6142
6143         spin_unlock_irq(&np->lock);
6144
6145         if (err) {
6146                 niu_disable_napi(np);
6147                 goto out_free_irq;
6148         }
6149
6150         netif_tx_start_all_queues(dev);
6151
6152         if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6153                 netif_carrier_on(dev);
6154
6155         add_timer(&np->timer);
6156
6157         return 0;
6158
6159 out_free_irq:
6160         niu_free_irq(np);
6161
6162 out_free_channels:
6163         niu_free_channels(np);
6164
6165 out_err:
6166         return err;
6167 }
6168
6169 static void niu_full_shutdown(struct niu *np, struct net_device *dev)
6170 {
6171         cancel_work_sync(&np->reset_task);
6172
6173         niu_disable_napi(np);
6174         netif_tx_stop_all_queues(dev);
6175
6176         del_timer_sync(&np->timer);
6177
6178         spin_lock_irq(&np->lock);
6179
6180         niu_stop_hw(np);
6181
6182         spin_unlock_irq(&np->lock);
6183 }
6184
6185 static int niu_close(struct net_device *dev)
6186 {
6187         struct niu *np = netdev_priv(dev);
6188
6189         niu_full_shutdown(np, dev);
6190
6191         niu_free_irq(np);
6192
6193         niu_free_channels(np);
6194
6195         niu_handle_led(np, 0);
6196
6197         return 0;
6198 }
6199
6200 static void niu_sync_xmac_stats(struct niu *np)
6201 {
6202         struct niu_xmac_stats *mp = &np->mac_stats.xmac;
6203
6204         mp->tx_frames += nr64_mac(TXMAC_FRM_CNT);
6205         mp->tx_bytes += nr64_mac(TXMAC_BYTE_CNT);
6206
6207         mp->rx_link_faults += nr64_mac(LINK_FAULT_CNT);
6208         mp->rx_align_errors += nr64_mac(RXMAC_ALIGN_ERR_CNT);
6209         mp->rx_frags += nr64_mac(RXMAC_FRAG_CNT);
6210         mp->rx_mcasts += nr64_mac(RXMAC_MC_FRM_CNT);
6211         mp->rx_bcasts += nr64_mac(RXMAC_BC_FRM_CNT);
6212         mp->rx_hist_cnt1 += nr64_mac(RXMAC_HIST_CNT1);
6213         mp->rx_hist_cnt2 += nr64_mac(RXMAC_HIST_CNT2);
6214         mp->rx_hist_cnt3 += nr64_mac(RXMAC_HIST_CNT3);
6215         mp->rx_hist_cnt4 += nr64_mac(RXMAC_HIST_CNT4);
6216         mp->rx_hist_cnt5 += nr64_mac(RXMAC_HIST_CNT5);
6217         mp->rx_hist_cnt6 += nr64_mac(RXMAC_HIST_CNT6);
6218         mp->rx_hist_cnt7 += nr64_mac(RXMAC_HIST_CNT7);
6219         mp->rx_octets += nr64_mac(RXMAC_BT_CNT);
6220         mp->rx_code_violations += nr64_mac(RXMAC_CD_VIO_CNT);
6221         mp->rx_len_errors += nr64_mac(RXMAC_MPSZER_CNT);
6222         mp->rx_crc_errors += nr64_mac(RXMAC_CRC_ER_CNT);
6223 }
6224
6225 static void niu_sync_bmac_stats(struct niu *np)
6226 {
6227         struct niu_bmac_stats *mp = &np->mac_stats.bmac;
6228
6229         mp->tx_bytes += nr64_mac(BTXMAC_BYTE_CNT);
6230         mp->tx_frames += nr64_mac(BTXMAC_FRM_CNT);
6231
6232         mp->rx_frames += nr64_mac(BRXMAC_FRAME_CNT);
6233         mp->rx_align_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6234         mp->rx_crc_errors += nr64_mac(BRXMAC_ALIGN_ERR_CNT);
6235         mp->rx_len_errors += nr64_mac(BRXMAC_CODE_VIOL_ERR_CNT);
6236 }
6237
6238 static void niu_sync_mac_stats(struct niu *np)
6239 {
6240         if (np->flags & NIU_FLAGS_XMAC)
6241                 niu_sync_xmac_stats(np);
6242         else
6243                 niu_sync_bmac_stats(np);
6244 }
6245
6246 static void niu_get_rx_stats(struct niu *np)
6247 {
6248         unsigned long pkts, dropped, errors, bytes;
6249         int i;
6250
6251         pkts = dropped = errors = bytes = 0;
6252         for (i = 0; i < np->num_rx_rings; i++) {
6253                 struct rx_ring_info *rp = &np->rx_rings[i];
6254
6255                 niu_sync_rx_discard_stats(np, rp, 0);
6256
6257                 pkts += rp->rx_packets;
6258                 bytes += rp->rx_bytes;
6259                 dropped += rp->rx_dropped;
6260                 errors += rp->rx_errors;
6261         }
6262         np->dev->stats.rx_packets = pkts;
6263         np->dev->stats.rx_bytes = bytes;
6264         np->dev->stats.rx_dropped = dropped;
6265         np->dev->stats.rx_errors = errors;
6266 }
6267
6268 static void niu_get_tx_stats(struct niu *np)
6269 {
6270         unsigned long pkts, errors, bytes;
6271         int i;
6272
6273         pkts = errors = bytes = 0;
6274         for (i = 0; i < np->num_tx_rings; i++) {
6275                 struct tx_ring_info *rp = &np->tx_rings[i];
6276
6277                 pkts += rp->tx_packets;
6278                 bytes += rp->tx_bytes;
6279                 errors += rp->tx_errors;
6280         }
6281         np->dev->stats.tx_packets = pkts;
6282         np->dev->stats.tx_bytes = bytes;
6283         np->dev->stats.tx_errors = errors;
6284 }
6285
6286 static struct net_device_stats *niu_get_stats(struct net_device *dev)
6287 {
6288         struct niu *np = netdev_priv(dev);
6289
6290         niu_get_rx_stats(np);
6291         niu_get_tx_stats(np);
6292
6293         return &dev->stats;
6294 }
6295
6296 static void niu_load_hash_xmac(struct niu *np, u16 *hash)
6297 {
6298         int i;
6299
6300         for (i = 0; i < 16; i++)
6301                 nw64_mac(XMAC_HASH_TBL(i), hash[i]);
6302 }
6303
6304 static void niu_load_hash_bmac(struct niu *np, u16 *hash)
6305 {
6306         int i;
6307
6308         for (i = 0; i < 16; i++)
6309                 nw64_mac(BMAC_HASH_TBL(i), hash[i]);
6310 }
6311
6312 static void niu_load_hash(struct niu *np, u16 *hash)
6313 {
6314         if (np->flags & NIU_FLAGS_XMAC)
6315                 niu_load_hash_xmac(np, hash);
6316         else
6317                 niu_load_hash_bmac(np, hash);
6318 }
6319
6320 static void niu_set_rx_mode(struct net_device *dev)
6321 {
6322         struct niu *np = netdev_priv(dev);
6323         int i, alt_cnt, err;
6324         struct netdev_hw_addr *ha;
6325         unsigned long flags;
6326         u16 hash[16] = { 0, };
6327
6328         spin_lock_irqsave(&np->lock, flags);
6329         niu_enable_rx_mac(np, 0);
6330
6331         np->flags &= ~(NIU_FLAGS_MCAST | NIU_FLAGS_PROMISC);
6332         if (dev->flags & IFF_PROMISC)
6333                 np->flags |= NIU_FLAGS_PROMISC;
6334         if ((dev->flags & IFF_ALLMULTI) || (!netdev_mc_empty(dev)))
6335                 np->flags |= NIU_FLAGS_MCAST;
6336
6337         alt_cnt = netdev_uc_count(dev);
6338         if (alt_cnt > niu_num_alt_addr(np)) {
6339                 alt_cnt = 0;
6340                 np->flags |= NIU_FLAGS_PROMISC;
6341         }
6342
6343         if (alt_cnt) {
6344                 int index = 0;
6345
6346                 netdev_for_each_uc_addr(ha, dev) {
6347                         err = niu_set_alt_mac(np, index, ha->addr);
6348                         if (err)
6349                                 netdev_warn(dev, "Error %d adding alt mac %d\n",
6350                                             err, index);
6351                         err = niu_enable_alt_mac(np, index, 1);
6352                         if (err)
6353                                 netdev_warn(dev, "Error %d enabling alt mac %d\n",
6354                                             err, index);
6355
6356                         index++;
6357                 }
6358         } else {
6359                 int alt_start;
6360                 if (np->flags & NIU_FLAGS_XMAC)
6361                         alt_start = 0;
6362                 else
6363                         alt_start = 1;
6364                 for (i = alt_start; i < niu_num_alt_addr(np); i++) {
6365                         err = niu_enable_alt_mac(np, i, 0);
6366                         if (err)
6367                                 netdev_warn(dev, "Error %d disabling alt mac %d\n",
6368                                             err, i);
6369                 }
6370         }
6371         if (dev->flags & IFF_ALLMULTI) {
6372                 for (i = 0; i < 16; i++)
6373                         hash[i] = 0xffff;
6374         } else if (!netdev_mc_empty(dev)) {
6375                 netdev_for_each_mc_addr(ha, dev) {
6376                         u32 crc = ether_crc_le(ETH_ALEN, ha->addr);
6377
6378                         crc >>= 24;
6379                         hash[crc >> 4] |= (1 << (15 - (crc & 0xf)));
6380                 }
6381         }
6382
6383         if (np->flags & NIU_FLAGS_MCAST)
6384                 niu_load_hash(np, hash);
6385
6386         niu_enable_rx_mac(np, 1);
6387         spin_unlock_irqrestore(&np->lock, flags);
6388 }
6389
6390 static int niu_set_mac_addr(struct net_device *dev, void *p)
6391 {
6392         struct niu *np = netdev_priv(dev);
6393         struct sockaddr *addr = p;
6394         unsigned long flags;
6395
6396         if (!is_valid_ether_addr(addr->sa_data))
6397                 return -EINVAL;
6398
6399         memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
6400
6401         if (!netif_running(dev))
6402                 return 0;
6403
6404         spin_lock_irqsave(&np->lock, flags);
6405         niu_enable_rx_mac(np, 0);
6406         niu_set_primary_mac(np, dev->dev_addr);
6407         niu_enable_rx_mac(np, 1);
6408         spin_unlock_irqrestore(&np->lock, flags);
6409
6410         return 0;
6411 }
6412
6413 static int niu_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
6414 {
6415         return -EOPNOTSUPP;
6416 }
6417
6418 static void niu_netif_stop(struct niu *np)
6419 {
6420         np->dev->trans_start = jiffies; /* prevent tx timeout */
6421
6422         niu_disable_napi(np);
6423
6424         netif_tx_disable(np->dev);
6425 }
6426
6427 static void niu_netif_start(struct niu *np)
6428 {
6429         /* NOTE: unconditional netif_wake_queue is only appropriate
6430          * so long as all callers are assured to have free tx slots
6431          * (such as after niu_init_hw).
6432          */
6433         netif_tx_wake_all_queues(np->dev);
6434
6435         niu_enable_napi(np);
6436
6437         niu_enable_interrupts(np, 1);
6438 }
6439
6440 static void niu_reset_buffers(struct niu *np)
6441 {
6442         int i, j, k, err;
6443
6444         if (np->rx_rings) {
6445                 for (i = 0; i < np->num_rx_rings; i++) {
6446                         struct rx_ring_info *rp = &np->rx_rings[i];
6447
6448                         for (j = 0, k = 0; j < MAX_RBR_RING_SIZE; j++) {
6449                                 struct page *page;
6450
6451                                 page = rp->rxhash[j];
6452                                 while (page) {
6453                                         struct page *next =
6454                                                 (struct page *) page->mapping;
6455                                         u64 base = page->index;
6456                                         base = base >> RBR_DESCR_ADDR_SHIFT;
6457                                         rp->rbr[k++] = cpu_to_le32(base);
6458                                         page = next;
6459                                 }
6460                         }
6461                         for (; k < MAX_RBR_RING_SIZE; k++) {
6462                                 err = niu_rbr_add_page(np, rp, GFP_ATOMIC, k);
6463                                 if (unlikely(err))
6464                                         break;
6465                         }
6466
6467                         rp->rbr_index = rp->rbr_table_size - 1;
6468                         rp->rcr_index = 0;
6469                         rp->rbr_pending = 0;
6470                         rp->rbr_refill_pending = 0;
6471                 }
6472         }
6473         if (np->tx_rings) {
6474                 for (i = 0; i < np->num_tx_rings; i++) {
6475                         struct tx_ring_info *rp = &np->tx_rings[i];
6476
6477                         for (j = 0; j < MAX_TX_RING_SIZE; j++) {
6478                                 if (rp->tx_buffs[j].skb)
6479                                         (void) release_tx_packet(np, rp, j);
6480                         }
6481
6482                         rp->pending = MAX_TX_RING_SIZE;
6483                         rp->prod = 0;
6484                         rp->cons = 0;
6485                         rp->wrap_bit = 0;
6486                 }
6487         }
6488 }
6489
6490 static void niu_reset_task(struct work_struct *work)
6491 {
6492         struct niu *np = container_of(work, struct niu, reset_task);
6493         unsigned long flags;
6494         int err;
6495
6496         spin_lock_irqsave(&np->lock, flags);
6497         if (!netif_running(np->dev)) {
6498                 spin_unlock_irqrestore(&np->lock, flags);
6499                 return;
6500         }
6501
6502         spin_unlock_irqrestore(&np->lock, flags);
6503
6504         del_timer_sync(&np->timer);
6505
6506         niu_netif_stop(np);
6507
6508         spin_lock_irqsave(&np->lock, flags);
6509
6510         niu_stop_hw(np);
6511
6512         spin_unlock_irqrestore(&np->lock, flags);
6513
6514         niu_reset_buffers(np);
6515
6516         spin_lock_irqsave(&np->lock, flags);
6517
6518         err = niu_init_hw(np);
6519         if (!err) {
6520                 np->timer.expires = jiffies + HZ;
6521                 add_timer(&np->timer);
6522                 niu_netif_start(np);
6523         }
6524
6525         spin_unlock_irqrestore(&np->lock, flags);
6526 }
6527
6528 static void niu_tx_timeout(struct net_device *dev)
6529 {
6530         struct niu *np = netdev_priv(dev);
6531
6532         dev_err(np->device, "%s: Transmit timed out, resetting\n",
6533                 dev->name);
6534
6535         schedule_work(&np->reset_task);
6536 }
6537
6538 static void niu_set_txd(struct tx_ring_info *rp, int index,
6539                         u64 mapping, u64 len, u64 mark,
6540                         u64 n_frags)
6541 {
6542         __le64 *desc = &rp->descr[index];
6543
6544         *desc = cpu_to_le64(mark |
6545                             (n_frags << TX_DESC_NUM_PTR_SHIFT) |
6546                             (len << TX_DESC_TR_LEN_SHIFT) |
6547                             (mapping & TX_DESC_SAD));
6548 }
6549
6550 static u64 niu_compute_tx_flags(struct sk_buff *skb, struct ethhdr *ehdr,
6551                                 u64 pad_bytes, u64 len)
6552 {
6553         u16 eth_proto, eth_proto_inner;
6554         u64 csum_bits, l3off, ihl, ret;
6555         u8 ip_proto;
6556         int ipv6;
6557
6558         eth_proto = be16_to_cpu(ehdr->h_proto);
6559         eth_proto_inner = eth_proto;
6560         if (eth_proto == ETH_P_8021Q) {
6561                 struct vlan_ethhdr *vp = (struct vlan_ethhdr *) ehdr;
6562                 __be16 val = vp->h_vlan_encapsulated_proto;
6563
6564                 eth_proto_inner = be16_to_cpu(val);
6565         }
6566
6567         ipv6 = ihl = 0;
6568         switch (skb->protocol) {
6569         case cpu_to_be16(ETH_P_IP):
6570                 ip_proto = ip_hdr(skb)->protocol;
6571                 ihl = ip_hdr(skb)->ihl;
6572                 break;
6573         case cpu_to_be16(ETH_P_IPV6):
6574                 ip_proto = ipv6_hdr(skb)->nexthdr;
6575                 ihl = (40 >> 2);
6576                 ipv6 = 1;
6577                 break;
6578         default:
6579                 ip_proto = ihl = 0;
6580                 break;
6581         }
6582
6583         csum_bits = TXHDR_CSUM_NONE;
6584         if (skb->ip_summed == CHECKSUM_PARTIAL) {
6585                 u64 start, stuff;
6586
6587                 csum_bits = (ip_proto == IPPROTO_TCP ?
6588                              TXHDR_CSUM_TCP :
6589                              (ip_proto == IPPROTO_UDP ?
6590                               TXHDR_CSUM_UDP : TXHDR_CSUM_SCTP));
6591
6592                 start = skb_transport_offset(skb) -
6593                         (pad_bytes + sizeof(struct tx_pkt_hdr));
6594                 stuff = start + skb->csum_offset;
6595
6596                 csum_bits |= (start / 2) << TXHDR_L4START_SHIFT;
6597                 csum_bits |= (stuff / 2) << TXHDR_L4STUFF_SHIFT;
6598         }
6599
6600         l3off = skb_network_offset(skb) -
6601                 (pad_bytes + sizeof(struct tx_pkt_hdr));
6602
6603         ret = (((pad_bytes / 2) << TXHDR_PAD_SHIFT) |
6604                (len << TXHDR_LEN_SHIFT) |
6605                ((l3off / 2) << TXHDR_L3START_SHIFT) |
6606                (ihl << TXHDR_IHL_SHIFT) |
6607                ((eth_proto_inner < 1536) ? TXHDR_LLC : 0) |
6608                ((eth_proto == ETH_P_8021Q) ? TXHDR_VLAN : 0) |
6609                (ipv6 ? TXHDR_IP_VER : 0) |
6610                csum_bits);
6611
6612         return ret;
6613 }
6614
6615 static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
6616                                   struct net_device *dev)
6617 {
6618         struct niu *np = netdev_priv(dev);
6619         unsigned long align, headroom;
6620         struct netdev_queue *txq;
6621         struct tx_ring_info *rp;
6622         struct tx_pkt_hdr *tp;
6623         unsigned int len, nfg;
6624         struct ethhdr *ehdr;
6625         int prod, i, tlen;
6626         u64 mapping, mrk;
6627
6628         i = skb_get_queue_mapping(skb);
6629         rp = &np->tx_rings[i];
6630         txq = netdev_get_tx_queue(dev, i);
6631
6632         if (niu_tx_avail(rp) <= (skb_shinfo(skb)->nr_frags + 1)) {
6633                 netif_tx_stop_queue(txq);
6634                 dev_err(np->device, "%s: BUG! Tx ring full when queue awake!\n", dev->name);
6635                 rp->tx_errors++;
6636                 return NETDEV_TX_BUSY;
6637         }
6638
6639         if (skb->len < ETH_ZLEN) {
6640                 unsigned int pad_bytes = ETH_ZLEN - skb->len;
6641
6642                 if (skb_pad(skb, pad_bytes))
6643                         goto out;
6644                 skb_put(skb, pad_bytes);
6645         }
6646
6647         len = sizeof(struct tx_pkt_hdr) + 15;
6648         if (skb_headroom(skb) < len) {
6649                 struct sk_buff *skb_new;
6650
6651                 skb_new = skb_realloc_headroom(skb, len);
6652                 if (!skb_new) {
6653                         rp->tx_errors++;
6654                         goto out_drop;
6655                 }
6656                 kfree_skb(skb);
6657                 skb = skb_new;
6658         } else
6659                 skb_orphan(skb);
6660
6661         align = ((unsigned long) skb->data & (16 - 1));
6662         headroom = align + sizeof(struct tx_pkt_hdr);
6663
6664         ehdr = (struct ethhdr *) skb->data;
6665         tp = (struct tx_pkt_hdr *) skb_push(skb, headroom);
6666
6667         len = skb->len - sizeof(struct tx_pkt_hdr);
6668         tp->flags = cpu_to_le64(niu_compute_tx_flags(skb, ehdr, align, len));
6669         tp->resv = 0;
6670
6671         len = skb_headlen(skb);
6672         mapping = np->ops->map_single(np->device, skb->data,
6673                                       len, DMA_TO_DEVICE);
6674
6675         prod = rp->prod;
6676
6677         rp->tx_buffs[prod].skb = skb;
6678         rp->tx_buffs[prod].mapping = mapping;
6679
6680         mrk = TX_DESC_SOP;
6681         if (++rp->mark_counter == rp->mark_freq) {
6682                 rp->mark_counter = 0;
6683                 mrk |= TX_DESC_MARK;
6684                 rp->mark_pending++;
6685         }
6686
6687         tlen = len;
6688         nfg = skb_shinfo(skb)->nr_frags;
6689         while (tlen > 0) {
6690                 tlen -= MAX_TX_DESC_LEN;
6691                 nfg++;
6692         }
6693
6694         while (len > 0) {
6695                 unsigned int this_len = len;
6696
6697                 if (this_len > MAX_TX_DESC_LEN)
6698                         this_len = MAX_TX_DESC_LEN;
6699
6700                 niu_set_txd(rp, prod, mapping, this_len, mrk, nfg);
6701                 mrk = nfg = 0;
6702
6703                 prod = NEXT_TX(rp, prod);
6704                 mapping += this_len;
6705                 len -= this_len;
6706         }
6707
6708         for (i = 0; i <  skb_shinfo(skb)->nr_frags; i++) {
6709                 skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
6710
6711                 len = frag->size;
6712                 mapping = np->ops->map_page(np->device, frag->page,
6713                                             frag->page_offset, len,
6714                                             DMA_TO_DEVICE);
6715
6716                 rp->tx_buffs[prod].skb = NULL;
6717                 rp->tx_buffs[prod].mapping = mapping;
6718
6719                 niu_set_txd(rp, prod, mapping, len, 0, 0);
6720
6721                 prod = NEXT_TX(rp, prod);
6722         }
6723
6724         if (prod < rp->prod)
6725                 rp->wrap_bit ^= TX_RING_KICK_WRAP;
6726         rp->prod = prod;
6727
6728         nw64(TX_RING_KICK(rp->tx_channel), rp->wrap_bit | (prod << 3));
6729
6730         if (unlikely(niu_tx_avail(rp) <= (MAX_SKB_FRAGS + 1))) {
6731                 netif_tx_stop_queue(txq);
6732                 if (niu_tx_avail(rp) > NIU_TX_WAKEUP_THRESH(rp))
6733                         netif_tx_wake_queue(txq);
6734         }
6735
6736 out:
6737         return NETDEV_TX_OK;
6738
6739 out_drop:
6740         rp->tx_errors++;
6741         kfree_skb(skb);
6742         goto out;
6743 }
6744
6745 static int niu_change_mtu(struct net_device *dev, int new_mtu)
6746 {
6747         struct niu *np = netdev_priv(dev);
6748         int err, orig_jumbo, new_jumbo;
6749
6750         if (new_mtu < 68 || new_mtu > NIU_MAX_MTU)
6751                 return -EINVAL;
6752
6753         orig_jumbo = (dev->mtu > ETH_DATA_LEN);
6754         new_jumbo = (new_mtu > ETH_DATA_LEN);
6755
6756         dev->mtu = new_mtu;
6757
6758         if (!netif_running(dev) ||
6759             (orig_jumbo == new_jumbo))
6760                 return 0;
6761
6762         niu_full_shutdown(np, dev);
6763
6764         niu_free_channels(np);
6765
6766         niu_enable_napi(np);
6767
6768         err = niu_alloc_channels(np);
6769         if (err)
6770                 return err;
6771
6772         spin_lock_irq(&np->lock);
6773
6774         err = niu_init_hw(np);
6775         if (!err) {
6776                 init_timer(&np->timer);
6777                 np->timer.expires = jiffies + HZ;
6778                 np->timer.data = (unsigned long) np;
6779                 np->timer.function = niu_timer;
6780
6781                 err = niu_enable_interrupts(np, 1);
6782                 if (err)
6783                         niu_stop_hw(np);
6784         }
6785
6786         spin_unlock_irq(&np->lock);
6787
6788         if (!err) {
6789                 netif_tx_start_all_queues(dev);
6790                 if (np->link_config.loopback_mode != LOOPBACK_DISABLED)
6791                         netif_carrier_on(dev);
6792
6793                 add_timer(&np->timer);
6794         }
6795
6796         return err;
6797 }
6798
6799 static void niu_get_drvinfo(struct net_device *dev,
6800                             struct ethtool_drvinfo *info)
6801 {
6802         struct niu *np = netdev_priv(dev);
6803         struct niu_vpd *vpd = &np->vpd;
6804
6805         strcpy(info->driver, DRV_MODULE_NAME);
6806         strcpy(info->version, DRV_MODULE_VERSION);
6807         sprintf(info->fw_version, "%d.%d",
6808                 vpd->fcode_major, vpd->fcode_minor);
6809         if (np->parent->plat_type != PLAT_TYPE_NIU)
6810                 strcpy(info->bus_info, pci_name(np->pdev));
6811 }
6812
6813 static int niu_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6814 {
6815         struct niu *np = netdev_priv(dev);
6816         struct niu_link_config *lp;
6817
6818         lp = &np->link_config;
6819
6820         memset(cmd, 0, sizeof(*cmd));
6821         cmd->phy_address = np->phy_addr;
6822         cmd->supported = lp->supported;
6823         cmd->advertising = lp->active_advertising;
6824         cmd->autoneg = lp->active_autoneg;
6825         cmd->speed = lp->active_speed;
6826         cmd->duplex = lp->active_duplex;
6827         cmd->port = (np->flags & NIU_FLAGS_FIBER) ? PORT_FIBRE : PORT_TP;
6828         cmd->transceiver = (np->flags & NIU_FLAGS_XCVR_SERDES) ?
6829                 XCVR_EXTERNAL : XCVR_INTERNAL;
6830
6831         return 0;
6832 }
6833
6834 static int niu_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
6835 {
6836         struct niu *np = netdev_priv(dev);
6837         struct niu_link_config *lp = &np->link_config;
6838
6839         lp->advertising = cmd->advertising;
6840         lp->speed = cmd->speed;
6841         lp->duplex = cmd->duplex;
6842         lp->autoneg = cmd->autoneg;
6843         return niu_init_link(np);
6844 }
6845
6846 static u32 niu_get_msglevel(struct net_device *dev)
6847 {
6848         struct niu *np = netdev_priv(dev);
6849         return np->msg_enable;
6850 }
6851
6852 static void niu_set_msglevel(struct net_device *dev, u32 value)
6853 {
6854         struct niu *np = netdev_priv(dev);
6855         np->msg_enable = value;
6856 }
6857
6858 static int niu_nway_reset(struct net_device *dev)
6859 {
6860         struct niu *np = netdev_priv(dev);
6861
6862         if (np->link_config.autoneg)
6863                 return niu_init_link(np);
6864
6865         return 0;
6866 }
6867
6868 static int niu_get_eeprom_len(struct net_device *dev)
6869 {
6870         struct niu *np = netdev_priv(dev);
6871
6872         return np->eeprom_len;
6873 }
6874
6875 static int niu_get_eeprom(struct net_device *dev,
6876                           struct ethtool_eeprom *eeprom, u8 *data)
6877 {
6878         struct niu *np = netdev_priv(dev);
6879         u32 offset, len, val;
6880
6881         offset = eeprom->offset;
6882         len = eeprom->len;
6883
6884         if (offset + len < offset)
6885                 return -EINVAL;
6886         if (offset >= np->eeprom_len)
6887                 return -EINVAL;
6888         if (offset + len > np->eeprom_len)
6889                 len = eeprom->len = np->eeprom_len - offset;
6890
6891         if (offset & 3) {
6892                 u32 b_offset, b_count;
6893
6894                 b_offset = offset & 3;
6895                 b_count = 4 - b_offset;
6896                 if (b_count > len)
6897                         b_count = len;
6898
6899                 val = nr64(ESPC_NCR((offset - b_offset) / 4));
6900                 memcpy(data, ((char *)&val) + b_offset, b_count);
6901                 data += b_count;
6902                 len -= b_count;
6903                 offset += b_count;
6904         }
6905         while (len >= 4) {
6906                 val = nr64(ESPC_NCR(offset / 4));
6907                 memcpy(data, &val, 4);
6908                 data += 4;
6909                 len -= 4;
6910                 offset += 4;
6911         }
6912         if (len) {
6913                 val = nr64(ESPC_NCR(offset / 4));
6914                 memcpy(data, &val, len);
6915         }
6916         return 0;
6917 }
6918
6919 static void niu_ethflow_to_l3proto(int flow_type, u8 *pid)
6920 {
6921         switch (flow_type) {
6922         case TCP_V4_FLOW:
6923         case TCP_V6_FLOW:
6924                 *pid = IPPROTO_TCP;
6925                 break;
6926         case UDP_V4_FLOW:
6927         case UDP_V6_FLOW:
6928                 *pid = IPPROTO_UDP;
6929                 break;
6930         case SCTP_V4_FLOW:
6931         case SCTP_V6_FLOW:
6932                 *pid = IPPROTO_SCTP;
6933                 break;
6934         case AH_V4_FLOW:
6935         case AH_V6_FLOW:
6936                 *pid = IPPROTO_AH;
6937                 break;
6938         case ESP_V4_FLOW:
6939         case ESP_V6_FLOW:
6940                 *pid = IPPROTO_ESP;
6941                 break;
6942         default:
6943                 *pid = 0;
6944                 break;
6945         }
6946 }
6947
6948 static int niu_class_to_ethflow(u64 class, int *flow_type)
6949 {
6950         switch (class) {
6951         case CLASS_CODE_TCP_IPV4:
6952                 *flow_type = TCP_V4_FLOW;
6953                 break;
6954         case CLASS_CODE_UDP_IPV4:
6955                 *flow_type = UDP_V4_FLOW;
6956                 break;
6957         case CLASS_CODE_AH_ESP_IPV4:
6958                 *flow_type = AH_V4_FLOW;
6959                 break;
6960         case CLASS_CODE_SCTP_IPV4:
6961                 *flow_type = SCTP_V4_FLOW;
6962                 break;
6963         case CLASS_CODE_TCP_IPV6:
6964                 *flow_type = TCP_V6_FLOW;
6965                 break;
6966         case CLASS_CODE_UDP_IPV6:
6967                 *flow_type = UDP_V6_FLOW;
6968                 break;
6969         case CLASS_CODE_AH_ESP_IPV6:
6970                 *flow_type = AH_V6_FLOW;
6971                 break;
6972         case CLASS_CODE_SCTP_IPV6:
6973                 *flow_type = SCTP_V6_FLOW;
6974                 break;
6975         case CLASS_CODE_USER_PROG1:
6976         case CLASS_CODE_USER_PROG2:
6977         case CLASS_CODE_USER_PROG3:
6978         case CLASS_CODE_USER_PROG4:
6979                 *flow_type = IP_USER_FLOW;
6980                 break;
6981         default:
6982                 return 0;
6983         }
6984
6985         return 1;
6986 }
6987
6988 static int niu_ethflow_to_class(int flow_type, u64 *class)
6989 {
6990         switch (flow_type) {
6991         case TCP_V4_FLOW:
6992                 *class = CLASS_CODE_TCP_IPV4;
6993                 break;
6994         case UDP_V4_FLOW:
6995                 *class = CLASS_CODE_UDP_IPV4;
6996                 break;
6997         case AH_V4_FLOW:
6998         case ESP_V4_FLOW:
6999                 *class = CLASS_CODE_AH_ESP_IPV4;
7000                 break;
7001         case SCTP_V4_FLOW:
7002                 *class = CLASS_CODE_SCTP_IPV4;
7003                 break;
7004         case TCP_V6_FLOW:
7005                 *class = CLASS_CODE_TCP_IPV6;
7006                 break;
7007         case UDP_V6_FLOW:
7008                 *class = CLASS_CODE_UDP_IPV6;
7009                 break;
7010         case AH_V6_FLOW:
7011         case ESP_V6_FLOW:
7012                 *class = CLASS_CODE_AH_ESP_IPV6;
7013                 break;
7014         case SCTP_V6_FLOW:
7015                 *class = CLASS_CODE_SCTP_IPV6;
7016                 break;
7017         default:
7018                 return 0;
7019         }
7020
7021         return 1;
7022 }
7023
7024 static u64 niu_flowkey_to_ethflow(u64 flow_key)
7025 {
7026         u64 ethflow = 0;
7027
7028         if (flow_key & FLOW_KEY_L2DA)
7029                 ethflow |= RXH_L2DA;
7030         if (flow_key & FLOW_KEY_VLAN)
7031                 ethflow |= RXH_VLAN;
7032         if (flow_key & FLOW_KEY_IPSA)
7033                 ethflow |= RXH_IP_SRC;
7034         if (flow_key & FLOW_KEY_IPDA)
7035                 ethflow |= RXH_IP_DST;
7036         if (flow_key & FLOW_KEY_PROTO)
7037                 ethflow |= RXH_L3_PROTO;
7038         if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT))
7039                 ethflow |= RXH_L4_B_0_1;
7040         if (flow_key & (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT))
7041                 ethflow |= RXH_L4_B_2_3;
7042
7043         return ethflow;
7044
7045 }
7046
7047 static int niu_ethflow_to_flowkey(u64 ethflow, u64 *flow_key)
7048 {
7049         u64 key = 0;
7050
7051         if (ethflow & RXH_L2DA)
7052                 key |= FLOW_KEY_L2DA;
7053         if (ethflow & RXH_VLAN)
7054                 key |= FLOW_KEY_VLAN;
7055         if (ethflow & RXH_IP_SRC)
7056                 key |= FLOW_KEY_IPSA;
7057         if (ethflow & RXH_IP_DST)
7058                 key |= FLOW_KEY_IPDA;
7059         if (ethflow & RXH_L3_PROTO)
7060                 key |= FLOW_KEY_PROTO;
7061         if (ethflow & RXH_L4_B_0_1)
7062                 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_0_SHIFT);
7063         if (ethflow & RXH_L4_B_2_3)
7064                 key |= (FLOW_KEY_L4_BYTE12 << FLOW_KEY_L4_1_SHIFT);
7065
7066         *flow_key = key;
7067
7068         return 1;
7069
7070 }
7071
7072 static int niu_get_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7073 {
7074         u64 class;
7075
7076         nfc->data = 0;
7077
7078         if (!niu_ethflow_to_class(nfc->flow_type, &class))
7079                 return -EINVAL;
7080
7081         if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7082             TCAM_KEY_DISC)
7083                 nfc->data = RXH_DISCARD;
7084         else
7085                 nfc->data = niu_flowkey_to_ethflow(np->parent->flow_key[class -
7086                                                       CLASS_CODE_USER_PROG1]);
7087         return 0;
7088 }
7089
7090 static void niu_get_ip4fs_from_tcam_key(struct niu_tcam_entry *tp,
7091                                         struct ethtool_rx_flow_spec *fsp)
7092 {
7093         u32 tmp;
7094         u16 prt;
7095
7096         tmp = (tp->key[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7097         fsp->h_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7098
7099         tmp = (tp->key[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7100         fsp->h_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7101
7102         tmp = (tp->key_mask[3] & TCAM_V4KEY3_SADDR) >> TCAM_V4KEY3_SADDR_SHIFT;
7103         fsp->m_u.tcp_ip4_spec.ip4src = cpu_to_be32(tmp);
7104
7105         tmp = (tp->key_mask[3] & TCAM_V4KEY3_DADDR) >> TCAM_V4KEY3_DADDR_SHIFT;
7106         fsp->m_u.tcp_ip4_spec.ip4dst = cpu_to_be32(tmp);
7107
7108         fsp->h_u.tcp_ip4_spec.tos = (tp->key[2] & TCAM_V4KEY2_TOS) >>
7109                 TCAM_V4KEY2_TOS_SHIFT;
7110         fsp->m_u.tcp_ip4_spec.tos = (tp->key_mask[2] & TCAM_V4KEY2_TOS) >>
7111                 TCAM_V4KEY2_TOS_SHIFT;
7112
7113         switch (fsp->flow_type) {
7114         case TCP_V4_FLOW:
7115         case UDP_V4_FLOW:
7116         case SCTP_V4_FLOW:
7117                 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7118                         TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7119                 fsp->h_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7120
7121                 prt = ((tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7122                         TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7123                 fsp->h_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7124
7125                 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7126                         TCAM_V4KEY2_PORT_SPI_SHIFT) >> 16;
7127                 fsp->m_u.tcp_ip4_spec.psrc = cpu_to_be16(prt);
7128
7129                 prt = ((tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7130                          TCAM_V4KEY2_PORT_SPI_SHIFT) & 0xffff;
7131                 fsp->m_u.tcp_ip4_spec.pdst = cpu_to_be16(prt);
7132                 break;
7133         case AH_V4_FLOW:
7134         case ESP_V4_FLOW:
7135                 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7136                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7137                 fsp->h_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7138
7139                 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7140                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7141                 fsp->m_u.ah_ip4_spec.spi = cpu_to_be32(tmp);
7142                 break;
7143         case IP_USER_FLOW:
7144                 tmp = (tp->key[2] & TCAM_V4KEY2_PORT_SPI) >>
7145                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7146                 fsp->h_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7147
7148                 tmp = (tp->key_mask[2] & TCAM_V4KEY2_PORT_SPI) >>
7149                         TCAM_V4KEY2_PORT_SPI_SHIFT;
7150                 fsp->m_u.usr_ip4_spec.l4_4_bytes = cpu_to_be32(tmp);
7151
7152                 fsp->h_u.usr_ip4_spec.proto =
7153                         (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7154                         TCAM_V4KEY2_PROTO_SHIFT;
7155                 fsp->m_u.usr_ip4_spec.proto =
7156                         (tp->key_mask[2] & TCAM_V4KEY2_PROTO) >>
7157                         TCAM_V4KEY2_PROTO_SHIFT;
7158
7159                 fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
7160                 break;
7161         default:
7162                 break;
7163         }
7164 }
7165
7166 static int niu_get_ethtool_tcam_entry(struct niu *np,
7167                                       struct ethtool_rxnfc *nfc)
7168 {
7169         struct niu_parent *parent = np->parent;
7170         struct niu_tcam_entry *tp;
7171         struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7172         u16 idx;
7173         u64 class;
7174         int ret = 0;
7175
7176         idx = tcam_get_index(np, (u16)nfc->fs.location);
7177
7178         tp = &parent->tcam[idx];
7179         if (!tp->valid) {
7180                 netdev_info(np->dev, "niu%d: entry [%d] invalid for idx[%d]\n",
7181                             parent->index, (u16)nfc->fs.location, idx);
7182                 return -EINVAL;
7183         }
7184
7185         /* fill the flow spec entry */
7186         class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7187                 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7188         ret = niu_class_to_ethflow(class, &fsp->flow_type);
7189
7190         if (ret < 0) {
7191                 netdev_info(np->dev, "niu%d: niu_class_to_ethflow failed\n",
7192                             parent->index);
7193                 ret = -EINVAL;
7194                 goto out;
7195         }
7196
7197         if (fsp->flow_type == AH_V4_FLOW || fsp->flow_type == AH_V6_FLOW) {
7198                 u32 proto = (tp->key[2] & TCAM_V4KEY2_PROTO) >>
7199                         TCAM_V4KEY2_PROTO_SHIFT;
7200                 if (proto == IPPROTO_ESP) {
7201                         if (fsp->flow_type == AH_V4_FLOW)
7202                                 fsp->flow_type = ESP_V4_FLOW;
7203                         else
7204                                 fsp->flow_type = ESP_V6_FLOW;
7205                 }
7206         }
7207
7208         switch (fsp->flow_type) {
7209         case TCP_V4_FLOW:
7210         case UDP_V4_FLOW:
7211         case SCTP_V4_FLOW:
7212         case AH_V4_FLOW:
7213         case ESP_V4_FLOW:
7214                 niu_get_ip4fs_from_tcam_key(tp, fsp);
7215                 break;
7216         case TCP_V6_FLOW:
7217         case UDP_V6_FLOW:
7218         case SCTP_V6_FLOW:
7219         case AH_V6_FLOW:
7220         case ESP_V6_FLOW:
7221                 /* Not yet implemented */
7222                 ret = -EINVAL;
7223                 break;
7224         case IP_USER_FLOW:
7225                 niu_get_ip4fs_from_tcam_key(tp, fsp);
7226                 break;
7227         default:
7228                 ret = -EINVAL;
7229                 break;
7230         }
7231
7232         if (ret < 0)
7233                 goto out;
7234
7235         if (tp->assoc_data & TCAM_ASSOCDATA_DISC)
7236                 fsp->ring_cookie = RX_CLS_FLOW_DISC;
7237         else
7238                 fsp->ring_cookie = (tp->assoc_data & TCAM_ASSOCDATA_OFFSET) >>
7239                         TCAM_ASSOCDATA_OFFSET_SHIFT;
7240
7241         /* put the tcam size here */
7242         nfc->data = tcam_get_size(np);
7243 out:
7244         return ret;
7245 }
7246
7247 static int niu_get_ethtool_tcam_all(struct niu *np,
7248                                     struct ethtool_rxnfc *nfc,
7249                                     u32 *rule_locs)
7250 {
7251         struct niu_parent *parent = np->parent;
7252         struct niu_tcam_entry *tp;
7253         int i, idx, cnt;
7254         unsigned long flags;
7255         int ret = 0;
7256
7257         /* put the tcam size here */
7258         nfc->data = tcam_get_size(np);
7259
7260         niu_lock_parent(np, flags);
7261         for (cnt = 0, i = 0; i < nfc->data; i++) {
7262                 idx = tcam_get_index(np, i);
7263                 tp = &parent->tcam[idx];
7264                 if (!tp->valid)
7265                         continue;
7266                 if (cnt == nfc->rule_cnt) {
7267                         ret = -EMSGSIZE;
7268                         break;
7269                 }
7270                 rule_locs[cnt] = i;
7271                 cnt++;
7272         }
7273         niu_unlock_parent(np, flags);
7274
7275         return ret;
7276 }
7277
7278 static int niu_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd,
7279                        void *rule_locs)
7280 {
7281         struct niu *np = netdev_priv(dev);
7282         int ret = 0;
7283
7284         switch (cmd->cmd) {
7285         case ETHTOOL_GRXFH:
7286                 ret = niu_get_hash_opts(np, cmd);
7287                 break;
7288         case ETHTOOL_GRXRINGS:
7289                 cmd->data = np->num_rx_rings;
7290                 break;
7291         case ETHTOOL_GRXCLSRLCNT:
7292                 cmd->rule_cnt = tcam_get_valid_entry_cnt(np);
7293                 break;
7294         case ETHTOOL_GRXCLSRULE:
7295                 ret = niu_get_ethtool_tcam_entry(np, cmd);
7296                 break;
7297         case ETHTOOL_GRXCLSRLALL:
7298                 ret = niu_get_ethtool_tcam_all(np, cmd, (u32 *)rule_locs);
7299                 break;
7300         default:
7301                 ret = -EINVAL;
7302                 break;
7303         }
7304
7305         return ret;
7306 }
7307
7308 static int niu_set_hash_opts(struct niu *np, struct ethtool_rxnfc *nfc)
7309 {
7310         u64 class;
7311         u64 flow_key = 0;
7312         unsigned long flags;
7313
7314         if (!niu_ethflow_to_class(nfc->flow_type, &class))
7315                 return -EINVAL;
7316
7317         if (class < CLASS_CODE_USER_PROG1 ||
7318             class > CLASS_CODE_SCTP_IPV6)
7319                 return -EINVAL;
7320
7321         if (nfc->data & RXH_DISCARD) {
7322                 niu_lock_parent(np, flags);
7323                 flow_key = np->parent->tcam_key[class -
7324                                                CLASS_CODE_USER_PROG1];
7325                 flow_key |= TCAM_KEY_DISC;
7326                 nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7327                 np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7328                 niu_unlock_parent(np, flags);
7329                 return 0;
7330         } else {
7331                 /* Discard was set before, but is not set now */
7332                 if (np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] &
7333                     TCAM_KEY_DISC) {
7334                         niu_lock_parent(np, flags);
7335                         flow_key = np->parent->tcam_key[class -
7336                                                CLASS_CODE_USER_PROG1];
7337                         flow_key &= ~TCAM_KEY_DISC;
7338                         nw64(TCAM_KEY(class - CLASS_CODE_USER_PROG1),
7339                              flow_key);
7340                         np->parent->tcam_key[class - CLASS_CODE_USER_PROG1] =
7341                                 flow_key;
7342                         niu_unlock_parent(np, flags);
7343                 }
7344         }
7345
7346         if (!niu_ethflow_to_flowkey(nfc->data, &flow_key))
7347                 return -EINVAL;
7348
7349         niu_lock_parent(np, flags);
7350         nw64(FLOW_KEY(class - CLASS_CODE_USER_PROG1), flow_key);
7351         np->parent->flow_key[class - CLASS_CODE_USER_PROG1] = flow_key;
7352         niu_unlock_parent(np, flags);
7353
7354         return 0;
7355 }
7356
7357 static void niu_get_tcamkey_from_ip4fs(struct ethtool_rx_flow_spec *fsp,
7358                                        struct niu_tcam_entry *tp,
7359                                        int l2_rdc_tab, u64 class)
7360 {
7361         u8 pid = 0;
7362         u32 sip, dip, sipm, dipm, spi, spim;
7363         u16 sport, dport, spm, dpm;
7364
7365         sip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4src);
7366         sipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4src);
7367         dip = be32_to_cpu(fsp->h_u.tcp_ip4_spec.ip4dst);
7368         dipm = be32_to_cpu(fsp->m_u.tcp_ip4_spec.ip4dst);
7369
7370         tp->key[0] = class << TCAM_V4KEY0_CLASS_CODE_SHIFT;
7371         tp->key_mask[0] = TCAM_V4KEY0_CLASS_CODE;
7372         tp->key[1] = (u64)l2_rdc_tab << TCAM_V4KEY1_L2RDCNUM_SHIFT;
7373         tp->key_mask[1] = TCAM_V4KEY1_L2RDCNUM;
7374
7375         tp->key[3] = (u64)sip << TCAM_V4KEY3_SADDR_SHIFT;
7376         tp->key[3] |= dip;
7377
7378         tp->key_mask[3] = (u64)sipm << TCAM_V4KEY3_SADDR_SHIFT;
7379         tp->key_mask[3] |= dipm;
7380
7381         tp->key[2] |= ((u64)fsp->h_u.tcp_ip4_spec.tos <<
7382                        TCAM_V4KEY2_TOS_SHIFT);
7383         tp->key_mask[2] |= ((u64)fsp->m_u.tcp_ip4_spec.tos <<
7384                             TCAM_V4KEY2_TOS_SHIFT);
7385         switch (fsp->flow_type) {
7386         case TCP_V4_FLOW:
7387         case UDP_V4_FLOW:
7388         case SCTP_V4_FLOW:
7389                 sport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.psrc);
7390                 spm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.psrc);
7391                 dport = be16_to_cpu(fsp->h_u.tcp_ip4_spec.pdst);
7392                 dpm = be16_to_cpu(fsp->m_u.tcp_ip4_spec.pdst);
7393
7394                 tp->key[2] |= (((u64)sport << 16) | dport);
7395                 tp->key_mask[2] |= (((u64)spm << 16) | dpm);
7396                 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7397                 break;
7398         case AH_V4_FLOW:
7399         case ESP_V4_FLOW:
7400                 spi = be32_to_cpu(fsp->h_u.ah_ip4_spec.spi);
7401                 spim = be32_to_cpu(fsp->m_u.ah_ip4_spec.spi);
7402
7403                 tp->key[2] |= spi;
7404                 tp->key_mask[2] |= spim;
7405                 niu_ethflow_to_l3proto(fsp->flow_type, &pid);
7406                 break;
7407         case IP_USER_FLOW:
7408                 spi = be32_to_cpu(fsp->h_u.usr_ip4_spec.l4_4_bytes);
7409                 spim = be32_to_cpu(fsp->m_u.usr_ip4_spec.l4_4_bytes);
7410
7411                 tp->key[2] |= spi;
7412                 tp->key_mask[2] |= spim;
7413                 pid = fsp->h_u.usr_ip4_spec.proto;
7414                 break;
7415         default:
7416                 break;
7417         }
7418
7419         tp->key[2] |= ((u64)pid << TCAM_V4KEY2_PROTO_SHIFT);
7420         if (pid) {
7421                 tp->key_mask[2] |= TCAM_V4KEY2_PROTO;
7422         }
7423 }
7424
7425 static int niu_add_ethtool_tcam_entry(struct niu *np,
7426                                       struct ethtool_rxnfc *nfc)
7427 {
7428         struct niu_parent *parent = np->parent;
7429         struct niu_tcam_entry *tp;
7430         struct ethtool_rx_flow_spec *fsp = &nfc->fs;
7431         struct niu_rdc_tables *rdc_table = &parent->rdc_group_cfg[np->port];
7432         int l2_rdc_table = rdc_table->first_table_num;
7433         u16 idx;
7434         u64 class;
7435         unsigned long flags;
7436         int err, ret;
7437
7438         ret = 0;
7439
7440         idx = nfc->fs.location;
7441         if (idx >= tcam_get_size(np))
7442                 return -EINVAL;
7443
7444         if (fsp->flow_type == IP_USER_FLOW) {
7445                 int i;
7446                 int add_usr_cls = 0;
7447                 struct ethtool_usrip4_spec *uspec = &fsp->h_u.usr_ip4_spec;
7448                 struct ethtool_usrip4_spec *umask = &fsp->m_u.usr_ip4_spec;
7449
7450                 if (uspec->ip_ver != ETH_RX_NFC_IP4)
7451                         return -EINVAL;
7452
7453                 niu_lock_parent(np, flags);
7454
7455                 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7456                         if (parent->l3_cls[i]) {
7457                                 if (uspec->proto == parent->l3_cls_pid[i]) {
7458                                         class = parent->l3_cls[i];
7459                                         parent->l3_cls_refcnt[i]++;
7460                                         add_usr_cls = 1;
7461                                         break;
7462                                 }
7463                         } else {
7464                                 /* Program new user IP class */
7465                                 switch (i) {
7466                                 case 0:
7467                                         class = CLASS_CODE_USER_PROG1;
7468                                         break;
7469                                 case 1:
7470                                         class = CLASS_CODE_USER_PROG2;
7471                                         break;
7472                                 case 2:
7473                                         class = CLASS_CODE_USER_PROG3;
7474                                         break;
7475                                 case 3:
7476                                         class = CLASS_CODE_USER_PROG4;
7477                                         break;
7478                                 default:
7479                                         break;
7480                                 }
7481                                 ret = tcam_user_ip_class_set(np, class, 0,
7482                                                              uspec->proto,
7483                                                              uspec->tos,
7484                                                              umask->tos);
7485                                 if (ret)
7486                                         goto out;
7487
7488                                 ret = tcam_user_ip_class_enable(np, class, 1);
7489                                 if (ret)
7490                                         goto out;
7491                                 parent->l3_cls[i] = class;
7492                                 parent->l3_cls_pid[i] = uspec->proto;
7493                                 parent->l3_cls_refcnt[i]++;
7494                                 add_usr_cls = 1;
7495                                 break;
7496                         }
7497                 }
7498                 if (!add_usr_cls) {
7499                         netdev_info(np->dev, "niu%d: %s(): Could not find/insert class for pid %d\n",
7500                                     parent->index, __func__, uspec->proto);
7501                         ret = -EINVAL;
7502                         goto out;
7503                 }
7504                 niu_unlock_parent(np, flags);
7505         } else {
7506                 if (!niu_ethflow_to_class(fsp->flow_type, &class)) {
7507                         return -EINVAL;
7508                 }
7509         }
7510
7511         niu_lock_parent(np, flags);
7512
7513         idx = tcam_get_index(np, idx);
7514         tp = &parent->tcam[idx];
7515
7516         memset(tp, 0, sizeof(*tp));
7517
7518         /* fill in the tcam key and mask */
7519         switch (fsp->flow_type) {
7520         case TCP_V4_FLOW:
7521         case UDP_V4_FLOW:
7522         case SCTP_V4_FLOW:
7523         case AH_V4_FLOW:
7524         case ESP_V4_FLOW:
7525                 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7526                 break;
7527         case TCP_V6_FLOW:
7528         case UDP_V6_FLOW:
7529         case SCTP_V6_FLOW:
7530         case AH_V6_FLOW:
7531         case ESP_V6_FLOW:
7532                 /* Not yet implemented */
7533                 netdev_info(np->dev, "niu%d: In %s(): flow %d for IPv6 not implemented\n",
7534                             parent->index, __func__, fsp->flow_type);
7535                 ret = -EINVAL;
7536                 goto out;
7537         case IP_USER_FLOW:
7538                 niu_get_tcamkey_from_ip4fs(fsp, tp, l2_rdc_table, class);
7539                 break;
7540         default:
7541                 netdev_info(np->dev, "niu%d: In %s(): Unknown flow type %d\n",
7542                             parent->index, __func__, fsp->flow_type);
7543                 ret = -EINVAL;
7544                 goto out;
7545         }
7546
7547         /* fill in the assoc data */
7548         if (fsp->ring_cookie == RX_CLS_FLOW_DISC) {
7549                 tp->assoc_data = TCAM_ASSOCDATA_DISC;
7550         } else {
7551                 if (fsp->ring_cookie >= np->num_rx_rings) {
7552                         netdev_info(np->dev, "niu%d: In %s(): Invalid RX ring %lld\n",
7553                                     parent->index, __func__,
7554                                     (long long)fsp->ring_cookie);
7555                         ret = -EINVAL;
7556                         goto out;
7557                 }
7558                 tp->assoc_data = (TCAM_ASSOCDATA_TRES_USE_OFFSET |
7559                                   (fsp->ring_cookie <<
7560                                    TCAM_ASSOCDATA_OFFSET_SHIFT));
7561         }
7562
7563         err = tcam_write(np, idx, tp->key, tp->key_mask);
7564         if (err) {
7565                 ret = -EINVAL;
7566                 goto out;
7567         }
7568         err = tcam_assoc_write(np, idx, tp->assoc_data);
7569         if (err) {
7570                 ret = -EINVAL;
7571                 goto out;
7572         }
7573
7574         /* validate the entry */
7575         tp->valid = 1;
7576         np->clas.tcam_valid_entries++;
7577 out:
7578         niu_unlock_parent(np, flags);
7579
7580         return ret;
7581 }
7582
7583 static int niu_del_ethtool_tcam_entry(struct niu *np, u32 loc)
7584 {
7585         struct niu_parent *parent = np->parent;
7586         struct niu_tcam_entry *tp;
7587         u16 idx;
7588         unsigned long flags;
7589         u64 class;
7590         int ret = 0;
7591
7592         if (loc >= tcam_get_size(np))
7593                 return -EINVAL;
7594
7595         niu_lock_parent(np, flags);
7596
7597         idx = tcam_get_index(np, loc);
7598         tp = &parent->tcam[idx];
7599
7600         /* if the entry is of a user defined class, then update*/
7601         class = (tp->key[0] & TCAM_V4KEY0_CLASS_CODE) >>
7602                 TCAM_V4KEY0_CLASS_CODE_SHIFT;
7603
7604         if (class >= CLASS_CODE_USER_PROG1 && class <= CLASS_CODE_USER_PROG4) {
7605                 int i;
7606                 for (i = 0; i < NIU_L3_PROG_CLS; i++) {
7607                         if (parent->l3_cls[i] == class) {
7608                                 parent->l3_cls_refcnt[i]--;
7609                                 if (!parent->l3_cls_refcnt[i]) {
7610                                         /* disable class */
7611                                         ret = tcam_user_ip_class_enable(np,
7612                                                                         class,
7613                                                                         0);
7614                                         if (ret)
7615                                                 goto out;
7616                                         parent->l3_cls[i] = 0;
7617                                         parent->l3_cls_pid[i] = 0;
7618                                 }
7619                                 break;
7620                         }
7621                 }
7622                 if (i == NIU_L3_PROG_CLS) {
7623                         netdev_info(np->dev, "niu%d: In %s(): Usr class 0x%llx not found\n",
7624                                     parent->index, __func__,
7625                                     (unsigned long long)class);
7626                         ret = -EINVAL;
7627                         goto out;
7628                 }
7629         }
7630
7631         ret = tcam_flush(np, idx);
7632         if (ret)
7633                 goto out;
7634
7635         /* invalidate the entry */
7636         tp->valid = 0;
7637         np->clas.tcam_valid_entries--;
7638 out:
7639         niu_unlock_parent(np, flags);
7640
7641         return ret;
7642 }
7643
7644 static int niu_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
7645 {
7646         struct niu *np = netdev_priv(dev);
7647         int ret = 0;
7648
7649         switch (cmd->cmd) {
7650         case ETHTOOL_SRXFH:
7651                 ret = niu_set_hash_opts(np, cmd);
7652                 break;
7653         case ETHTOOL_SRXCLSRLINS:
7654                 ret = niu_add_ethtool_tcam_entry(np, cmd);
7655                 break;
7656         case ETHTOOL_SRXCLSRLDEL:
7657                 ret = niu_del_ethtool_tcam_entry(np, cmd->fs.location);
7658                 break;
7659         default:
7660                 ret = -EINVAL;
7661                 break;
7662         }
7663
7664         return ret;
7665 }
7666
7667 static const struct {
7668         const char string[ETH_GSTRING_LEN];
7669 } niu_xmac_stat_keys[] = {
7670         { "tx_frames" },
7671         { "tx_bytes" },
7672         { "tx_fifo_errors" },
7673         { "tx_overflow_errors" },
7674         { "tx_max_pkt_size_errors" },
7675         { "tx_underflow_errors" },
7676         { "rx_local_faults" },
7677         { "rx_remote_faults" },
7678         { "rx_link_faults" },
7679         { "rx_align_errors" },
7680         { "rx_frags" },
7681         { "rx_mcasts" },
7682         { "rx_bcasts" },
7683         { "rx_hist_cnt1" },
7684         { "rx_hist_cnt2" },
7685         { "rx_hist_cnt3" },
7686         { "rx_hist_cnt4" },
7687         { "rx_hist_cnt5" },
7688         { "rx_hist_cnt6" },
7689         { "rx_hist_cnt7" },
7690         { "rx_octets" },
7691         { "rx_code_violations" },
7692         { "rx_len_errors" },
7693         { "rx_crc_errors" },
7694         { "rx_underflows" },
7695         { "rx_overflows" },
7696         { "pause_off_state" },
7697         { "pause_on_state" },
7698         { "pause_received" },
7699 };
7700
7701 #define NUM_XMAC_STAT_KEYS      ARRAY_SIZE(niu_xmac_stat_keys)
7702
7703 static const struct {
7704         const char string[ETH_GSTRING_LEN];
7705 } niu_bmac_stat_keys[] = {
7706         { "tx_underflow_errors" },
7707         { "tx_max_pkt_size_errors" },
7708         { "tx_bytes" },
7709         { "tx_frames" },
7710         { "rx_overflows" },
7711         { "rx_frames" },
7712         { "rx_align_errors" },
7713         { "rx_crc_errors" },
7714         { "rx_len_errors" },
7715         { "pause_off_state" },
7716         { "pause_on_state" },
7717         { "pause_received" },
7718 };
7719
7720 #define NUM_BMAC_STAT_KEYS      ARRAY_SIZE(niu_bmac_stat_keys)
7721
7722 static const struct {
7723         const char string[ETH_GSTRING_LEN];
7724 } niu_rxchan_stat_keys[] = {
7725         { "rx_channel" },
7726         { "rx_packets" },
7727         { "rx_bytes" },
7728         { "rx_dropped" },
7729         { "rx_errors" },
7730 };
7731
7732 #define NUM_RXCHAN_STAT_KEYS    ARRAY_SIZE(niu_rxchan_stat_keys)
7733
7734 static const struct {
7735         const char string[ETH_GSTRING_LEN];
7736 } niu_txchan_stat_keys[] = {
7737         { "tx_channel" },
7738         { "tx_packets" },
7739         { "tx_bytes" },
7740         { "tx_errors" },
7741 };
7742
7743 #define NUM_TXCHAN_STAT_KEYS    ARRAY_SIZE(niu_txchan_stat_keys)
7744
7745 static void niu_get_strings(struct net_device *dev, u32 stringset, u8 *data)
7746 {
7747         struct niu *np = netdev_priv(dev);
7748         int i;
7749
7750         if (stringset != ETH_SS_STATS)
7751                 return;
7752
7753         if (np->flags & NIU_FLAGS_XMAC) {
7754                 memcpy(data, niu_xmac_stat_keys,
7755                        sizeof(niu_xmac_stat_keys));
7756                 data += sizeof(niu_xmac_stat_keys);
7757         } else {
7758                 memcpy(data, niu_bmac_stat_keys,
7759                        sizeof(niu_bmac_stat_keys));
7760                 data += sizeof(niu_bmac_stat_keys);
7761         }
7762         for (i = 0; i < np->num_rx_rings; i++) {
7763                 memcpy(data, niu_rxchan_stat_keys,
7764                        sizeof(niu_rxchan_stat_keys));
7765                 data += sizeof(niu_rxchan_stat_keys);
7766         }
7767         for (i = 0; i < np->num_tx_rings; i++) {
7768                 memcpy(data, niu_txchan_stat_keys,
7769                        sizeof(niu_txchan_stat_keys));
7770                 data += sizeof(niu_txchan_stat_keys);
7771         }
7772 }
7773
7774 static int niu_get_sset_count(struct net_device *dev, int stringset)
7775 {
7776         struct niu *np = netdev_priv(dev);
7777
7778         if (stringset != ETH_SS_STATS)
7779                 return -EINVAL;
7780
7781         return (np->flags & NIU_FLAGS_XMAC ?
7782                  NUM_XMAC_STAT_KEYS :
7783                  NUM_BMAC_STAT_KEYS) +
7784                 (np->num_rx_rings * NUM_RXCHAN_STAT_KEYS) +
7785                 (np->num_tx_rings * NUM_TXCHAN_STAT_KEYS);
7786 }
7787
7788 static void niu_get_ethtool_stats(struct net_device *dev,
7789                                   struct ethtool_stats *stats, u64 *data)
7790 {
7791         struct niu *np = netdev_priv(dev);
7792         int i;
7793
7794         niu_sync_mac_stats(np);
7795         if (np->flags & NIU_FLAGS_XMAC) {
7796                 memcpy(data, &np->mac_stats.xmac,
7797                        sizeof(struct niu_xmac_stats));
7798                 data += (sizeof(struct niu_xmac_stats) / sizeof(u64));
7799         } else {
7800                 memcpy(data, &np->mac_stats.bmac,
7801                        sizeof(struct niu_bmac_stats));
7802                 data += (sizeof(struct niu_bmac_stats) / sizeof(u64));
7803         }
7804         for (i = 0; i < np->num_rx_rings; i++) {
7805                 struct rx_ring_info *rp = &np->rx_rings[i];
7806
7807                 niu_sync_rx_discard_stats(np, rp, 0);
7808
7809                 data[0] = rp->rx_channel;
7810                 data[1] = rp->rx_packets;
7811                 data[2] = rp->rx_bytes;
7812                 data[3] = rp->rx_dropped;
7813                 data[4] = rp->rx_errors;
7814                 data += 5;
7815         }
7816         for (i = 0; i < np->num_tx_rings; i++) {
7817                 struct tx_ring_info *rp = &np->tx_rings[i];
7818
7819                 data[0] = rp->tx_channel;
7820                 data[1] = rp->tx_packets;
7821                 data[2] = rp->tx_bytes;
7822                 data[3] = rp->tx_errors;
7823                 data += 4;
7824         }
7825 }
7826
7827 static u64 niu_led_state_save(struct niu *np)
7828 {
7829         if (np->flags & NIU_FLAGS_XMAC)
7830                 return nr64_mac(XMAC_CONFIG);
7831         else
7832                 return nr64_mac(BMAC_XIF_CONFIG);
7833 }
7834
7835 static void niu_led_state_restore(struct niu *np, u64 val)
7836 {
7837         if (np->flags & NIU_FLAGS_XMAC)
7838                 nw64_mac(XMAC_CONFIG, val);
7839         else
7840                 nw64_mac(BMAC_XIF_CONFIG, val);
7841 }
7842
7843 static void niu_force_led(struct niu *np, int on)
7844 {
7845         u64 val, reg, bit;
7846
7847         if (np->flags & NIU_FLAGS_XMAC) {
7848                 reg = XMAC_CONFIG;
7849                 bit = XMAC_CONFIG_FORCE_LED_ON;
7850         } else {
7851                 reg = BMAC_XIF_CONFIG;
7852                 bit = BMAC_XIF_CONFIG_LINK_LED;
7853         }
7854
7855         val = nr64_mac(reg);
7856         if (on)
7857                 val |= bit;
7858         else
7859                 val &= ~bit;
7860         nw64_mac(reg, val);
7861 }
7862
7863 static int niu_phys_id(struct net_device *dev, u32 data)
7864 {
7865         struct niu *np = netdev_priv(dev);
7866         u64 orig_led_state;
7867         int i;
7868
7869         if (!netif_running(dev))
7870                 return -EAGAIN;
7871
7872         if (data == 0)
7873                 data = 2;
7874
7875         orig_led_state = niu_led_state_save(np);
7876         for (i = 0; i < (data * 2); i++) {
7877                 int on = ((i % 2) == 0);
7878
7879                 niu_force_led(np, on);
7880
7881                 if (msleep_interruptible(500))
7882                         break;
7883         }
7884         niu_led_state_restore(np, orig_led_state);
7885
7886         return 0;
7887 }
7888
7889 static int niu_set_flags(struct net_device *dev, u32 data)
7890 {
7891         return ethtool_op_set_flags(dev, data, ETH_FLAG_RXHASH);
7892 }
7893
7894 static const struct ethtool_ops niu_ethtool_ops = {
7895         .get_drvinfo            = niu_get_drvinfo,
7896         .get_link               = ethtool_op_get_link,
7897         .get_msglevel           = niu_get_msglevel,
7898         .set_msglevel           = niu_set_msglevel,
7899         .nway_reset             = niu_nway_reset,
7900         .get_eeprom_len         = niu_get_eeprom_len,
7901         .get_eeprom             = niu_get_eeprom,
7902         .get_settings           = niu_get_settings,
7903         .set_settings           = niu_set_settings,
7904         .get_strings            = niu_get_strings,
7905         .get_sset_count         = niu_get_sset_count,
7906         .get_ethtool_stats      = niu_get_ethtool_stats,
7907         .phys_id                = niu_phys_id,
7908         .get_rxnfc              = niu_get_nfc,
7909         .set_rxnfc              = niu_set_nfc,
7910         .set_flags              = niu_set_flags,
7911         .get_flags              = ethtool_op_get_flags,
7912 };
7913
7914 static int niu_ldg_assign_ldn(struct niu *np, struct niu_parent *parent,
7915                               int ldg, int ldn)
7916 {
7917         if (ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX)
7918                 return -EINVAL;
7919         if (ldn < 0 || ldn > LDN_MAX)
7920                 return -EINVAL;
7921
7922         parent->ldg_map[ldn] = ldg;
7923
7924         if (np->parent->plat_type == PLAT_TYPE_NIU) {
7925                 /* On N2 NIU, the ldn-->ldg assignments are setup and fixed by
7926                  * the firmware, and we're not supposed to change them.
7927                  * Validate the mapping, because if it's wrong we probably
7928                  * won't get any interrupts and that's painful to debug.
7929                  */
7930                 if (nr64(LDG_NUM(ldn)) != ldg) {
7931                         dev_err(np->device, "Port %u, mis-matched LDG assignment for ldn %d, should be %d is %llu\n",
7932                                 np->port, ldn, ldg,
7933                                 (unsigned long long) nr64(LDG_NUM(ldn)));
7934                         return -EINVAL;
7935                 }
7936         } else
7937                 nw64(LDG_NUM(ldn), ldg);
7938
7939         return 0;
7940 }
7941
7942 static int niu_set_ldg_timer_res(struct niu *np, int res)
7943 {
7944         if (res < 0 || res > LDG_TIMER_RES_VAL)
7945                 return -EINVAL;
7946
7947
7948         nw64(LDG_TIMER_RES, res);
7949
7950         return 0;
7951 }
7952
7953 static int niu_set_ldg_sid(struct niu *np, int ldg, int func, int vector)
7954 {
7955         if ((ldg < NIU_LDG_MIN || ldg > NIU_LDG_MAX) ||
7956             (func < 0 || func > 3) ||
7957             (vector < 0 || vector > 0x1f))
7958                 return -EINVAL;
7959
7960         nw64(SID(ldg), (func << SID_FUNC_SHIFT) | vector);
7961
7962         return 0;
7963 }
7964
7965 static int __devinit niu_pci_eeprom_read(struct niu *np, u32 addr)
7966 {
7967         u64 frame, frame_base = (ESPC_PIO_STAT_READ_START |
7968                                  (addr << ESPC_PIO_STAT_ADDR_SHIFT));
7969         int limit;
7970
7971         if (addr > (ESPC_PIO_STAT_ADDR >> ESPC_PIO_STAT_ADDR_SHIFT))
7972                 return -EINVAL;
7973
7974         frame = frame_base;
7975         nw64(ESPC_PIO_STAT, frame);
7976         limit = 64;
7977         do {
7978                 udelay(5);
7979                 frame = nr64(ESPC_PIO_STAT);
7980                 if (frame & ESPC_PIO_STAT_READ_END)
7981                         break;
7982         } while (limit--);
7983         if (!(frame & ESPC_PIO_STAT_READ_END)) {
7984                 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
7985                         (unsigned long long) frame);
7986                 return -ENODEV;
7987         }
7988
7989         frame = frame_base;
7990         nw64(ESPC_PIO_STAT, frame);
7991         limit = 64;
7992         do {
7993                 udelay(5);
7994                 frame = nr64(ESPC_PIO_STAT);
7995                 if (frame & ESPC_PIO_STAT_READ_END)
7996                         break;
7997         } while (limit--);
7998         if (!(frame & ESPC_PIO_STAT_READ_END)) {
7999                 dev_err(np->device, "EEPROM read timeout frame[%llx]\n",
8000                         (unsigned long long) frame);
8001                 return -ENODEV;
8002         }
8003
8004         frame = nr64(ESPC_PIO_STAT);
8005         return (frame & ESPC_PIO_STAT_DATA) >> ESPC_PIO_STAT_DATA_SHIFT;
8006 }
8007
8008 static int __devinit niu_pci_eeprom_read16(struct niu *np, u32 off)
8009 {
8010         int err = niu_pci_eeprom_read(np, off);
8011         u16 val;
8012
8013         if (err < 0)
8014                 return err;
8015         val = (err << 8);
8016         err = niu_pci_eeprom_read(np, off + 1);
8017         if (err < 0)
8018                 return err;
8019         val |= (err & 0xff);
8020
8021         return val;
8022 }
8023
8024 static int __devinit niu_pci_eeprom_read16_swp(struct niu *np, u32 off)
8025 {
8026         int err = niu_pci_eeprom_read(np, off);
8027         u16 val;
8028
8029         if (err < 0)
8030                 return err;
8031
8032         val = (err & 0xff);
8033         err = niu_pci_eeprom_read(np, off + 1);
8034         if (err < 0)
8035                 return err;
8036
8037         val |= (err & 0xff) << 8;
8038
8039         return val;
8040 }
8041
8042 static int __devinit niu_pci_vpd_get_propname(struct niu *np,
8043                                               u32 off,
8044                                               char *namebuf,
8045                                               int namebuf_len)
8046 {
8047         int i;
8048
8049         for (i = 0; i < namebuf_len; i++) {
8050                 int err = niu_pci_eeprom_read(np, off + i);
8051                 if (err < 0)
8052                         return err;
8053                 *namebuf++ = err;
8054                 if (!err)
8055                         break;
8056         }
8057         if (i >= namebuf_len)
8058                 return -EINVAL;
8059
8060         return i + 1;
8061 }
8062
8063 static void __devinit niu_vpd_parse_version(struct niu *np)
8064 {
8065         struct niu_vpd *vpd = &np->vpd;
8066         int len = strlen(vpd->version) + 1;
8067         const char *s = vpd->version;
8068         int i;
8069
8070         for (i = 0; i < len - 5; i++) {
8071                 if (!strncmp(s + i, "FCode ", 6))
8072                         break;
8073         }
8074         if (i >= len - 5)
8075                 return;
8076
8077         s += i + 5;
8078         sscanf(s, "%d.%d", &vpd->fcode_major, &vpd->fcode_minor);
8079
8080         netif_printk(np, probe, KERN_DEBUG, np->dev,
8081                      "VPD_SCAN: FCODE major(%d) minor(%d)\n",
8082                      vpd->fcode_major, vpd->fcode_minor);
8083         if (vpd->fcode_major > NIU_VPD_MIN_MAJOR ||
8084             (vpd->fcode_major == NIU_VPD_MIN_MAJOR &&
8085              vpd->fcode_minor >= NIU_VPD_MIN_MINOR))
8086                 np->flags |= NIU_FLAGS_VPD_VALID;
8087 }
8088
8089 /* ESPC_PIO_EN_ENABLE must be set */
8090 static int __devinit niu_pci_vpd_scan_props(struct niu *np,
8091                                             u32 start, u32 end)
8092 {
8093         unsigned int found_mask = 0;
8094 #define FOUND_MASK_MODEL        0x00000001
8095 #define FOUND_MASK_BMODEL       0x00000002
8096 #define FOUND_MASK_VERS         0x00000004
8097 #define FOUND_MASK_MAC          0x00000008
8098 #define FOUND_MASK_NMAC         0x00000010
8099 #define FOUND_MASK_PHY          0x00000020
8100 #define FOUND_MASK_ALL          0x0000003f
8101
8102         netif_printk(np, probe, KERN_DEBUG, np->dev,
8103                      "VPD_SCAN: start[%x] end[%x]\n", start, end);
8104         while (start < end) {
8105                 int len, err, instance, type, prop_len;
8106                 char namebuf[64];
8107                 u8 *prop_buf;
8108                 int max_len;
8109
8110                 if (found_mask == FOUND_MASK_ALL) {
8111                         niu_vpd_parse_version(np);
8112                         return 1;
8113                 }
8114
8115                 err = niu_pci_eeprom_read(np, start + 2);
8116                 if (err < 0)
8117                         return err;
8118                 len = err;
8119                 start += 3;
8120
8121                 instance = niu_pci_eeprom_read(np, start);
8122                 type = niu_pci_eeprom_read(np, start + 3);
8123                 prop_len = niu_pci_eeprom_read(np, start + 4);
8124                 err = niu_pci_vpd_get_propname(np, start + 5, namebuf, 64);
8125                 if (err < 0)
8126                         return err;
8127
8128                 prop_buf = NULL;
8129                 max_len = 0;
8130                 if (!strcmp(namebuf, "model")) {
8131                         prop_buf = np->vpd.model;
8132                         max_len = NIU_VPD_MODEL_MAX;
8133                         found_mask |= FOUND_MASK_MODEL;
8134                 } else if (!strcmp(namebuf, "board-model")) {
8135                         prop_buf = np->vpd.board_model;
8136                         max_len = NIU_VPD_BD_MODEL_MAX;
8137                         found_mask |= FOUND_MASK_BMODEL;
8138                 } else if (!strcmp(namebuf, "version")) {
8139                         prop_buf = np->vpd.version;
8140                         max_len = NIU_VPD_VERSION_MAX;
8141                         found_mask |= FOUND_MASK_VERS;
8142                 } else if (!strcmp(namebuf, "local-mac-address")) {
8143                         prop_buf = np->vpd.local_mac;
8144                         max_len = ETH_ALEN;
8145                         found_mask |= FOUND_MASK_MAC;
8146                 } else if (!strcmp(namebuf, "num-mac-addresses")) {
8147                         prop_buf = &np->vpd.mac_num;
8148                         max_len = 1;
8149                         found_mask |= FOUND_MASK_NMAC;
8150                 } else if (!strcmp(namebuf, "phy-type")) {
8151                         prop_buf = np->vpd.phy_type;
8152                         max_len = NIU_VPD_PHY_TYPE_MAX;
8153                         found_mask |= FOUND_MASK_PHY;
8154                 }
8155
8156                 if (max_len && prop_len > max_len) {
8157                         dev_err(np->device, "Property '%s' length (%d) is too long\n", namebuf, prop_len);
8158                         return -EINVAL;
8159                 }
8160
8161                 if (prop_buf) {
8162                         u32 off = start + 5 + err;
8163                         int i;
8164
8165                         netif_printk(np, probe, KERN_DEBUG, np->dev,
8166                                      "VPD_SCAN: Reading in property [%s] len[%d]\n",
8167                                      namebuf, prop_len);
8168                         for (i = 0; i < prop_len; i++)
8169                                 *prop_buf++ = niu_pci_eeprom_read(np, off + i);
8170                 }
8171
8172                 start += len;
8173         }
8174
8175         return 0;
8176 }
8177
8178 /* ESPC_PIO_EN_ENABLE must be set */
8179 static void __devinit niu_pci_vpd_fetch(struct niu *np, u32 start)
8180 {
8181         u32 offset;
8182         int err;
8183
8184         err = niu_pci_eeprom_read16_swp(np, start + 1);
8185         if (err < 0)
8186                 return;
8187
8188         offset = err + 3;
8189
8190         while (start + offset < ESPC_EEPROM_SIZE) {
8191                 u32 here = start + offset;
8192                 u32 end;
8193
8194                 err = niu_pci_eeprom_read(np, here);
8195                 if (err != 0x90)
8196                         return;
8197
8198                 err = niu_pci_eeprom_read16_swp(np, here + 1);
8199                 if (err < 0)
8200                         return;
8201
8202                 here = start + offset + 3;
8203                 end = start + offset + err;
8204
8205                 offset += err;
8206
8207                 err = niu_pci_vpd_scan_props(np, here, end);
8208                 if (err < 0 || err == 1)
8209                         return;
8210         }
8211 }
8212
8213 /* ESPC_PIO_EN_ENABLE must be set */
8214 static u32 __devinit niu_pci_vpd_offset(struct niu *np)
8215 {
8216         u32 start = 0, end = ESPC_EEPROM_SIZE, ret;
8217         int err;
8218
8219         while (start < end) {
8220                 ret = start;
8221
8222                 /* ROM header signature?  */
8223                 err = niu_pci_eeprom_read16(np, start +  0);
8224                 if (err != 0x55aa)
8225                         return 0;
8226
8227                 /* Apply offset to PCI data structure.  */
8228                 err = niu_pci_eeprom_read16(np, start + 23);
8229                 if (err < 0)
8230                         return 0;
8231                 start += err;
8232
8233                 /* Check for "PCIR" signature.  */
8234                 err = niu_pci_eeprom_read16(np, start +  0);
8235                 if (err != 0x5043)
8236                         return 0;
8237                 err = niu_pci_eeprom_read16(np, start +  2);
8238                 if (err != 0x4952)
8239                         return 0;
8240
8241                 /* Check for OBP image type.  */
8242                 err = niu_pci_eeprom_read(np, start + 20);
8243                 if (err < 0)
8244                         return 0;
8245                 if (err != 0x01) {
8246                         err = niu_pci_eeprom_read(np, ret + 2);
8247                         if (err < 0)
8248                                 return 0;
8249
8250                         start = ret + (err * 512);
8251                         continue;
8252                 }
8253
8254                 err = niu_pci_eeprom_read16_swp(np, start + 8);
8255                 if (err < 0)
8256                         return err;
8257                 ret += err;
8258
8259                 err = niu_pci_eeprom_read(np, ret + 0);
8260                 if (err != 0x82)
8261                         return 0;
8262
8263                 return ret;
8264         }
8265
8266         return 0;
8267 }
8268
8269 static int __devinit niu_phy_type_prop_decode(struct niu *np,
8270                                               const char *phy_prop)
8271 {
8272         if (!strcmp(phy_prop, "mif")) {
8273                 /* 1G copper, MII */
8274                 np->flags &= ~(NIU_FLAGS_FIBER |
8275                                NIU_FLAGS_10G);
8276                 np->mac_xcvr = MAC_XCVR_MII;
8277         } else if (!strcmp(phy_prop, "xgf")) {
8278                 /* 10G fiber, XPCS */
8279                 np->flags |= (NIU_FLAGS_10G |
8280                               NIU_FLAGS_FIBER);
8281                 np->mac_xcvr = MAC_XCVR_XPCS;
8282         } else if (!strcmp(phy_prop, "pcs")) {
8283                 /* 1G fiber, PCS */
8284                 np->flags &= ~NIU_FLAGS_10G;
8285                 np->flags |= NIU_FLAGS_FIBER;
8286                 np->mac_xcvr = MAC_XCVR_PCS;
8287         } else if (!strcmp(phy_prop, "xgc")) {
8288                 /* 10G copper, XPCS */
8289                 np->flags |= NIU_FLAGS_10G;
8290                 np->flags &= ~NIU_FLAGS_FIBER;
8291                 np->mac_xcvr = MAC_XCVR_XPCS;
8292         } else if (!strcmp(phy_prop, "xgsd") || !strcmp(phy_prop, "gsd")) {
8293                 /* 10G Serdes or 1G Serdes, default to 10G */
8294                 np->flags |= NIU_FLAGS_10G;
8295                 np->flags &= ~NIU_FLAGS_FIBER;
8296                 np->flags |= NIU_FLAGS_XCVR_SERDES;
8297                 np->mac_xcvr = MAC_XCVR_XPCS;
8298         } else {
8299                 return -EINVAL;
8300         }
8301         return 0;
8302 }
8303
8304 static int niu_pci_vpd_get_nports(struct niu *np)
8305 {
8306         int ports = 0;
8307
8308         if ((!strcmp(np->vpd.model, NIU_QGC_LP_MDL_STR)) ||
8309             (!strcmp(np->vpd.model, NIU_QGC_PEM_MDL_STR)) ||
8310             (!strcmp(np->vpd.model, NIU_MARAMBA_MDL_STR)) ||
8311             (!strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) ||
8312             (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR))) {
8313                 ports = 4;
8314         } else if ((!strcmp(np->vpd.model, NIU_2XGF_LP_MDL_STR)) ||
8315                    (!strcmp(np->vpd.model, NIU_2XGF_PEM_MDL_STR)) ||
8316                    (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) ||
8317                    (!strcmp(np->vpd.model, NIU_2XGF_MRVL_MDL_STR))) {
8318                 ports = 2;
8319         }
8320
8321         return ports;
8322 }
8323
8324 static void __devinit niu_pci_vpd_validate(struct niu *np)
8325 {
8326         struct net_device *dev = np->dev;
8327         struct niu_vpd *vpd = &np->vpd;
8328         u8 val8;
8329
8330         if (!is_valid_ether_addr(&vpd->local_mac[0])) {
8331                 dev_err(np->device, "VPD MAC invalid, falling back to SPROM\n");
8332
8333                 np->flags &= ~NIU_FLAGS_VPD_VALID;
8334                 return;
8335         }
8336
8337         if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8338             !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8339                 np->flags |= NIU_FLAGS_10G;
8340                 np->flags &= ~NIU_FLAGS_FIBER;
8341                 np->flags |= NIU_FLAGS_XCVR_SERDES;
8342                 np->mac_xcvr = MAC_XCVR_PCS;
8343                 if (np->port > 1) {
8344                         np->flags |= NIU_FLAGS_FIBER;
8345                         np->flags &= ~NIU_FLAGS_10G;
8346                 }
8347                 if (np->flags & NIU_FLAGS_10G)
8348                         np->mac_xcvr = MAC_XCVR_XPCS;
8349         } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8350                 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
8351                               NIU_FLAGS_HOTPLUG_PHY);
8352         } else if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
8353                 dev_err(np->device, "Illegal phy string [%s]\n",
8354                         np->vpd.phy_type);
8355                 dev_err(np->device, "Falling back to SPROM\n");
8356                 np->flags &= ~NIU_FLAGS_VPD_VALID;
8357                 return;
8358         }
8359
8360         memcpy(dev->perm_addr, vpd->local_mac, ETH_ALEN);
8361
8362         val8 = dev->perm_addr[5];
8363         dev->perm_addr[5] += np->port;
8364         if (dev->perm_addr[5] < val8)
8365                 dev->perm_addr[4]++;
8366
8367         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8368 }
8369
8370 static int __devinit niu_pci_probe_sprom(struct niu *np)
8371 {
8372         struct net_device *dev = np->dev;
8373         int len, i;
8374         u64 val, sum;
8375         u8 val8;
8376
8377         val = (nr64(ESPC_VER_IMGSZ) & ESPC_VER_IMGSZ_IMGSZ);
8378         val >>= ESPC_VER_IMGSZ_IMGSZ_SHIFT;
8379         len = val / 4;
8380
8381         np->eeprom_len = len;
8382
8383         netif_printk(np, probe, KERN_DEBUG, np->dev,
8384                      "SPROM: Image size %llu\n", (unsigned long long)val);
8385
8386         sum = 0;
8387         for (i = 0; i < len; i++) {
8388                 val = nr64(ESPC_NCR(i));
8389                 sum += (val >>  0) & 0xff;
8390                 sum += (val >>  8) & 0xff;
8391                 sum += (val >> 16) & 0xff;
8392                 sum += (val >> 24) & 0xff;
8393         }
8394         netif_printk(np, probe, KERN_DEBUG, np->dev,
8395                      "SPROM: Checksum %x\n", (int)(sum & 0xff));
8396         if ((sum & 0xff) != 0xab) {
8397                 dev_err(np->device, "Bad SPROM checksum (%x, should be 0xab)\n", (int)(sum & 0xff));
8398                 return -EINVAL;
8399         }
8400
8401         val = nr64(ESPC_PHY_TYPE);
8402         switch (np->port) {
8403         case 0:
8404                 val8 = (val & ESPC_PHY_TYPE_PORT0) >>
8405                         ESPC_PHY_TYPE_PORT0_SHIFT;
8406                 break;
8407         case 1:
8408                 val8 = (val & ESPC_PHY_TYPE_PORT1) >>
8409                         ESPC_PHY_TYPE_PORT1_SHIFT;
8410                 break;
8411         case 2:
8412                 val8 = (val & ESPC_PHY_TYPE_PORT2) >>
8413                         ESPC_PHY_TYPE_PORT2_SHIFT;
8414                 break;
8415         case 3:
8416                 val8 = (val & ESPC_PHY_TYPE_PORT3) >>
8417                         ESPC_PHY_TYPE_PORT3_SHIFT;
8418                 break;
8419         default:
8420                 dev_err(np->device, "Bogus port number %u\n",
8421                         np->port);
8422                 return -EINVAL;
8423         }
8424         netif_printk(np, probe, KERN_DEBUG, np->dev,
8425                      "SPROM: PHY type %x\n", val8);
8426
8427         switch (val8) {
8428         case ESPC_PHY_TYPE_1G_COPPER:
8429                 /* 1G copper, MII */
8430                 np->flags &= ~(NIU_FLAGS_FIBER |
8431                                NIU_FLAGS_10G);
8432                 np->mac_xcvr = MAC_XCVR_MII;
8433                 break;
8434
8435         case ESPC_PHY_TYPE_1G_FIBER:
8436                 /* 1G fiber, PCS */
8437                 np->flags &= ~NIU_FLAGS_10G;
8438                 np->flags |= NIU_FLAGS_FIBER;
8439                 np->mac_xcvr = MAC_XCVR_PCS;
8440                 break;
8441
8442         case ESPC_PHY_TYPE_10G_COPPER:
8443                 /* 10G copper, XPCS */
8444                 np->flags |= NIU_FLAGS_10G;
8445                 np->flags &= ~NIU_FLAGS_FIBER;
8446                 np->mac_xcvr = MAC_XCVR_XPCS;
8447                 break;
8448
8449         case ESPC_PHY_TYPE_10G_FIBER:
8450                 /* 10G fiber, XPCS */
8451                 np->flags |= (NIU_FLAGS_10G |
8452                               NIU_FLAGS_FIBER);
8453                 np->mac_xcvr = MAC_XCVR_XPCS;
8454                 break;
8455
8456         default:
8457                 dev_err(np->device, "Bogus SPROM phy type %u\n", val8);
8458                 return -EINVAL;
8459         }
8460
8461         val = nr64(ESPC_MAC_ADDR0);
8462         netif_printk(np, probe, KERN_DEBUG, np->dev,
8463                      "SPROM: MAC_ADDR0[%08llx]\n", (unsigned long long)val);
8464         dev->perm_addr[0] = (val >>  0) & 0xff;
8465         dev->perm_addr[1] = (val >>  8) & 0xff;
8466         dev->perm_addr[2] = (val >> 16) & 0xff;
8467         dev->perm_addr[3] = (val >> 24) & 0xff;
8468
8469         val = nr64(ESPC_MAC_ADDR1);
8470         netif_printk(np, probe, KERN_DEBUG, np->dev,
8471                      "SPROM: MAC_ADDR1[%08llx]\n", (unsigned long long)val);
8472         dev->perm_addr[4] = (val >>  0) & 0xff;
8473         dev->perm_addr[5] = (val >>  8) & 0xff;
8474
8475         if (!is_valid_ether_addr(&dev->perm_addr[0])) {
8476                 dev_err(np->device, "SPROM MAC address invalid [ %pM ]\n",
8477                         dev->perm_addr);
8478                 return -EINVAL;
8479         }
8480
8481         val8 = dev->perm_addr[5];
8482         dev->perm_addr[5] += np->port;
8483         if (dev->perm_addr[5] < val8)
8484                 dev->perm_addr[4]++;
8485
8486         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
8487
8488         val = nr64(ESPC_MOD_STR_LEN);
8489         netif_printk(np, probe, KERN_DEBUG, np->dev,
8490                      "SPROM: MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8491         if (val >= 8 * 4)
8492                 return -EINVAL;
8493
8494         for (i = 0; i < val; i += 4) {
8495                 u64 tmp = nr64(ESPC_NCR(5 + (i / 4)));
8496
8497                 np->vpd.model[i + 3] = (tmp >>  0) & 0xff;
8498                 np->vpd.model[i + 2] = (tmp >>  8) & 0xff;
8499                 np->vpd.model[i + 1] = (tmp >> 16) & 0xff;
8500                 np->vpd.model[i + 0] = (tmp >> 24) & 0xff;
8501         }
8502         np->vpd.model[val] = '\0';
8503
8504         val = nr64(ESPC_BD_MOD_STR_LEN);
8505         netif_printk(np, probe, KERN_DEBUG, np->dev,
8506                      "SPROM: BD_MOD_STR_LEN[%llu]\n", (unsigned long long)val);
8507         if (val >= 4 * 4)
8508                 return -EINVAL;
8509
8510         for (i = 0; i < val; i += 4) {
8511                 u64 tmp = nr64(ESPC_NCR(14 + (i / 4)));
8512
8513                 np->vpd.board_model[i + 3] = (tmp >>  0) & 0xff;
8514                 np->vpd.board_model[i + 2] = (tmp >>  8) & 0xff;
8515                 np->vpd.board_model[i + 1] = (tmp >> 16) & 0xff;
8516                 np->vpd.board_model[i + 0] = (tmp >> 24) & 0xff;
8517         }
8518         np->vpd.board_model[val] = '\0';
8519
8520         np->vpd.mac_num =
8521                 nr64(ESPC_NUM_PORTS_MACS) & ESPC_NUM_PORTS_MACS_VAL;
8522         netif_printk(np, probe, KERN_DEBUG, np->dev,
8523                      "SPROM: NUM_PORTS_MACS[%d]\n", np->vpd.mac_num);
8524
8525         return 0;
8526 }
8527
8528 static int __devinit niu_get_and_validate_port(struct niu *np)
8529 {
8530         struct niu_parent *parent = np->parent;
8531
8532         if (np->port <= 1)
8533                 np->flags |= NIU_FLAGS_XMAC;
8534
8535         if (!parent->num_ports) {
8536                 if (parent->plat_type == PLAT_TYPE_NIU) {
8537                         parent->num_ports = 2;
8538                 } else {
8539                         parent->num_ports = niu_pci_vpd_get_nports(np);
8540                         if (!parent->num_ports) {
8541                                 /* Fall back to SPROM as last resort.
8542                                  * This will fail on most cards.
8543                                  */
8544                                 parent->num_ports = nr64(ESPC_NUM_PORTS_MACS) &
8545                                         ESPC_NUM_PORTS_MACS_VAL;
8546
8547                                 /* All of the current probing methods fail on
8548                                  * Maramba on-board parts.
8549                                  */
8550                                 if (!parent->num_ports)
8551                                         parent->num_ports = 4;
8552                         }
8553                 }
8554         }
8555
8556         if (np->port >= parent->num_ports)
8557                 return -ENODEV;
8558
8559         return 0;
8560 }
8561
8562 static int __devinit phy_record(struct niu_parent *parent,
8563                                 struct phy_probe_info *p,
8564                                 int dev_id_1, int dev_id_2, u8 phy_port,
8565                                 int type)
8566 {
8567         u32 id = (dev_id_1 << 16) | dev_id_2;
8568         u8 idx;
8569
8570         if (dev_id_1 < 0 || dev_id_2 < 0)
8571                 return 0;
8572         if (type == PHY_TYPE_PMA_PMD || type == PHY_TYPE_PCS) {
8573                 if (((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8704) &&
8574                     ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_MRVL88X2011) &&
8575                     ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM8706))
8576                         return 0;
8577         } else {
8578                 if ((id & NIU_PHY_ID_MASK) != NIU_PHY_ID_BCM5464R)
8579                         return 0;
8580         }
8581
8582         pr_info("niu%d: Found PHY %08x type %s at phy_port %u\n",
8583                 parent->index, id,
8584                 type == PHY_TYPE_PMA_PMD ? "PMA/PMD" :
8585                 type == PHY_TYPE_PCS ? "PCS" : "MII",
8586                 phy_port);
8587
8588         if (p->cur[type] >= NIU_MAX_PORTS) {
8589                 pr_err("Too many PHY ports\n");
8590                 return -EINVAL;
8591         }
8592         idx = p->cur[type];
8593         p->phy_id[type][idx] = id;
8594         p->phy_port[type][idx] = phy_port;
8595         p->cur[type] = idx + 1;
8596         return 0;
8597 }
8598
8599 static int __devinit port_has_10g(struct phy_probe_info *p, int port)
8600 {
8601         int i;
8602
8603         for (i = 0; i < p->cur[PHY_TYPE_PMA_PMD]; i++) {
8604                 if (p->phy_port[PHY_TYPE_PMA_PMD][i] == port)
8605                         return 1;
8606         }
8607         for (i = 0; i < p->cur[PHY_TYPE_PCS]; i++) {
8608                 if (p->phy_port[PHY_TYPE_PCS][i] == port)
8609                         return 1;
8610         }
8611
8612         return 0;
8613 }
8614
8615 static int __devinit count_10g_ports(struct phy_probe_info *p, int *lowest)
8616 {
8617         int port, cnt;
8618
8619         cnt = 0;
8620         *lowest = 32;
8621         for (port = 8; port < 32; port++) {
8622                 if (port_has_10g(p, port)) {
8623                         if (!cnt)
8624                                 *lowest = port;
8625                         cnt++;
8626                 }
8627         }
8628
8629         return cnt;
8630 }
8631
8632 static int __devinit count_1g_ports(struct phy_probe_info *p, int *lowest)
8633 {
8634         *lowest = 32;
8635         if (p->cur[PHY_TYPE_MII])
8636                 *lowest = p->phy_port[PHY_TYPE_MII][0];
8637
8638         return p->cur[PHY_TYPE_MII];
8639 }
8640
8641 static void __devinit niu_n2_divide_channels(struct niu_parent *parent)
8642 {
8643         int num_ports = parent->num_ports;
8644         int i;
8645
8646         for (i = 0; i < num_ports; i++) {
8647                 parent->rxchan_per_port[i] = (16 / num_ports);
8648                 parent->txchan_per_port[i] = (16 / num_ports);
8649
8650                 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8651                         parent->index, i,
8652                         parent->rxchan_per_port[i],
8653                         parent->txchan_per_port[i]);
8654         }
8655 }
8656
8657 static void __devinit niu_divide_channels(struct niu_parent *parent,
8658                                           int num_10g, int num_1g)
8659 {
8660         int num_ports = parent->num_ports;
8661         int rx_chans_per_10g, rx_chans_per_1g;
8662         int tx_chans_per_10g, tx_chans_per_1g;
8663         int i, tot_rx, tot_tx;
8664
8665         if (!num_10g || !num_1g) {
8666                 rx_chans_per_10g = rx_chans_per_1g =
8667                         (NIU_NUM_RXCHAN / num_ports);
8668                 tx_chans_per_10g = tx_chans_per_1g =
8669                         (NIU_NUM_TXCHAN / num_ports);
8670         } else {
8671                 rx_chans_per_1g = NIU_NUM_RXCHAN / 8;
8672                 rx_chans_per_10g = (NIU_NUM_RXCHAN -
8673                                     (rx_chans_per_1g * num_1g)) /
8674                         num_10g;
8675
8676                 tx_chans_per_1g = NIU_NUM_TXCHAN / 6;
8677                 tx_chans_per_10g = (NIU_NUM_TXCHAN -
8678                                     (tx_chans_per_1g * num_1g)) /
8679                         num_10g;
8680         }
8681
8682         tot_rx = tot_tx = 0;
8683         for (i = 0; i < num_ports; i++) {
8684                 int type = phy_decode(parent->port_phy, i);
8685
8686                 if (type == PORT_TYPE_10G) {
8687                         parent->rxchan_per_port[i] = rx_chans_per_10g;
8688                         parent->txchan_per_port[i] = tx_chans_per_10g;
8689                 } else {
8690                         parent->rxchan_per_port[i] = rx_chans_per_1g;
8691                         parent->txchan_per_port[i] = tx_chans_per_1g;
8692                 }
8693                 pr_info("niu%d: Port %u [%u RX chans] [%u TX chans]\n",
8694                         parent->index, i,
8695                         parent->rxchan_per_port[i],
8696                         parent->txchan_per_port[i]);
8697                 tot_rx += parent->rxchan_per_port[i];
8698                 tot_tx += parent->txchan_per_port[i];
8699         }
8700
8701         if (tot_rx > NIU_NUM_RXCHAN) {
8702                 pr_err("niu%d: Too many RX channels (%d), resetting to one per port\n",
8703                        parent->index, tot_rx);
8704                 for (i = 0; i < num_ports; i++)
8705                         parent->rxchan_per_port[i] = 1;
8706         }
8707         if (tot_tx > NIU_NUM_TXCHAN) {
8708                 pr_err("niu%d: Too many TX channels (%d), resetting to one per port\n",
8709                        parent->index, tot_tx);
8710                 for (i = 0; i < num_ports; i++)
8711                         parent->txchan_per_port[i] = 1;
8712         }
8713         if (tot_rx < NIU_NUM_RXCHAN || tot_tx < NIU_NUM_TXCHAN) {
8714                 pr_warning("niu%d: Driver bug, wasted channels, RX[%d] TX[%d]\n",
8715                            parent->index, tot_rx, tot_tx);
8716         }
8717 }
8718
8719 static void __devinit niu_divide_rdc_groups(struct niu_parent *parent,
8720                                             int num_10g, int num_1g)
8721 {
8722         int i, num_ports = parent->num_ports;
8723         int rdc_group, rdc_groups_per_port;
8724         int rdc_channel_base;
8725
8726         rdc_group = 0;
8727         rdc_groups_per_port = NIU_NUM_RDC_TABLES / num_ports;
8728
8729         rdc_channel_base = 0;
8730
8731         for (i = 0; i < num_ports; i++) {
8732                 struct niu_rdc_tables *tp = &parent->rdc_group_cfg[i];
8733                 int grp, num_channels = parent->rxchan_per_port[i];
8734                 int this_channel_offset;
8735
8736                 tp->first_table_num = rdc_group;
8737                 tp->num_tables = rdc_groups_per_port;
8738                 this_channel_offset = 0;
8739                 for (grp = 0; grp < tp->num_tables; grp++) {
8740                         struct rdc_table *rt = &tp->tables[grp];
8741                         int slot;
8742
8743                         pr_info("niu%d: Port %d RDC tbl(%d) [ ",
8744                                 parent->index, i, tp->first_table_num + grp);
8745                         for (slot = 0; slot < NIU_RDC_TABLE_SLOTS; slot++) {
8746                                 rt->rxdma_channel[slot] =
8747                                         rdc_channel_base + this_channel_offset;
8748
8749                                 pr_cont("%d ", rt->rxdma_channel[slot]);
8750
8751                                 if (++this_channel_offset == num_channels)
8752                                         this_channel_offset = 0;
8753                         }
8754                         pr_cont("]\n");
8755                 }
8756
8757                 parent->rdc_default[i] = rdc_channel_base;
8758
8759                 rdc_channel_base += num_channels;
8760                 rdc_group += rdc_groups_per_port;
8761         }
8762 }
8763
8764 static int __devinit fill_phy_probe_info(struct niu *np,
8765                                          struct niu_parent *parent,
8766                                          struct phy_probe_info *info)
8767 {
8768         unsigned long flags;
8769         int port, err;
8770
8771         memset(info, 0, sizeof(*info));
8772
8773         /* Port 0 to 7 are reserved for onboard Serdes, probe the rest.  */
8774         niu_lock_parent(np, flags);
8775         err = 0;
8776         for (port = 8; port < 32; port++) {
8777                 int dev_id_1, dev_id_2;
8778
8779                 dev_id_1 = mdio_read(np, port,
8780                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID1);
8781                 dev_id_2 = mdio_read(np, port,
8782                                      NIU_PMA_PMD_DEV_ADDR, MII_PHYSID2);
8783                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8784                                  PHY_TYPE_PMA_PMD);
8785                 if (err)
8786                         break;
8787                 dev_id_1 = mdio_read(np, port,
8788                                      NIU_PCS_DEV_ADDR, MII_PHYSID1);
8789                 dev_id_2 = mdio_read(np, port,
8790                                      NIU_PCS_DEV_ADDR, MII_PHYSID2);
8791                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8792                                  PHY_TYPE_PCS);
8793                 if (err)
8794                         break;
8795                 dev_id_1 = mii_read(np, port, MII_PHYSID1);
8796                 dev_id_2 = mii_read(np, port, MII_PHYSID2);
8797                 err = phy_record(parent, info, dev_id_1, dev_id_2, port,
8798                                  PHY_TYPE_MII);
8799                 if (err)
8800                         break;
8801         }
8802         niu_unlock_parent(np, flags);
8803
8804         return err;
8805 }
8806
8807 static int __devinit walk_phys(struct niu *np, struct niu_parent *parent)
8808 {
8809         struct phy_probe_info *info = &parent->phy_probe_info;
8810         int lowest_10g, lowest_1g;
8811         int num_10g, num_1g;
8812         u32 val;
8813         int err;
8814
8815         num_10g = num_1g = 0;
8816
8817         if (!strcmp(np->vpd.model, NIU_ALONSO_MDL_STR) ||
8818             !strcmp(np->vpd.model, NIU_KIMI_MDL_STR)) {
8819                 num_10g = 0;
8820                 num_1g = 2;
8821                 parent->plat_type = PLAT_TYPE_ATCA_CP3220;
8822                 parent->num_ports = 4;
8823                 val = (phy_encode(PORT_TYPE_1G, 0) |
8824                        phy_encode(PORT_TYPE_1G, 1) |
8825                        phy_encode(PORT_TYPE_1G, 2) |
8826                        phy_encode(PORT_TYPE_1G, 3));
8827         } else if (!strcmp(np->vpd.model, NIU_FOXXY_MDL_STR)) {
8828                 num_10g = 2;
8829                 num_1g = 0;
8830                 parent->num_ports = 2;
8831                 val = (phy_encode(PORT_TYPE_10G, 0) |
8832                        phy_encode(PORT_TYPE_10G, 1));
8833         } else if ((np->flags & NIU_FLAGS_XCVR_SERDES) &&
8834                    (parent->plat_type == PLAT_TYPE_NIU)) {
8835                 /* this is the Monza case */
8836                 if (np->flags & NIU_FLAGS_10G) {
8837                         val = (phy_encode(PORT_TYPE_10G, 0) |
8838                                phy_encode(PORT_TYPE_10G, 1));
8839                 } else {
8840                         val = (phy_encode(PORT_TYPE_1G, 0) |
8841                                phy_encode(PORT_TYPE_1G, 1));
8842                 }
8843         } else {
8844                 err = fill_phy_probe_info(np, parent, info);
8845                 if (err)
8846                         return err;
8847
8848                 num_10g = count_10g_ports(info, &lowest_10g);
8849                 num_1g = count_1g_ports(info, &lowest_1g);
8850
8851                 switch ((num_10g << 4) | num_1g) {
8852                 case 0x24:
8853                         if (lowest_1g == 10)
8854                                 parent->plat_type = PLAT_TYPE_VF_P0;
8855                         else if (lowest_1g == 26)
8856                                 parent->plat_type = PLAT_TYPE_VF_P1;
8857                         else
8858                                 goto unknown_vg_1g_port;
8859
8860                         /* fallthru */
8861                 case 0x22:
8862                         val = (phy_encode(PORT_TYPE_10G, 0) |
8863                                phy_encode(PORT_TYPE_10G, 1) |
8864                                phy_encode(PORT_TYPE_1G, 2) |
8865                                phy_encode(PORT_TYPE_1G, 3));
8866                         break;
8867
8868                 case 0x20:
8869                         val = (phy_encode(PORT_TYPE_10G, 0) |
8870                                phy_encode(PORT_TYPE_10G, 1));
8871                         break;
8872
8873                 case 0x10:
8874                         val = phy_encode(PORT_TYPE_10G, np->port);
8875                         break;
8876
8877                 case 0x14:
8878                         if (lowest_1g == 10)
8879                                 parent->plat_type = PLAT_TYPE_VF_P0;
8880                         else if (lowest_1g == 26)
8881                                 parent->plat_type = PLAT_TYPE_VF_P1;
8882                         else
8883                                 goto unknown_vg_1g_port;
8884
8885                         /* fallthru */
8886                 case 0x13:
8887                         if ((lowest_10g & 0x7) == 0)
8888                                 val = (phy_encode(PORT_TYPE_10G, 0) |
8889                                        phy_encode(PORT_TYPE_1G, 1) |
8890                                        phy_encode(PORT_TYPE_1G, 2) |
8891                                        phy_encode(PORT_TYPE_1G, 3));
8892                         else
8893                                 val = (phy_encode(PORT_TYPE_1G, 0) |
8894                                        phy_encode(PORT_TYPE_10G, 1) |
8895                                        phy_encode(PORT_TYPE_1G, 2) |
8896                                        phy_encode(PORT_TYPE_1G, 3));
8897                         break;
8898
8899                 case 0x04:
8900                         if (lowest_1g == 10)
8901                                 parent->plat_type = PLAT_TYPE_VF_P0;
8902                         else if (lowest_1g == 26)
8903                                 parent->plat_type = PLAT_TYPE_VF_P1;
8904                         else
8905                                 goto unknown_vg_1g_port;
8906
8907                         val = (phy_encode(PORT_TYPE_1G, 0) |
8908                                phy_encode(PORT_TYPE_1G, 1) |
8909                                phy_encode(PORT_TYPE_1G, 2) |
8910                                phy_encode(PORT_TYPE_1G, 3));
8911                         break;
8912
8913                 default:
8914                         pr_err("Unsupported port config 10G[%d] 1G[%d]\n",
8915                                num_10g, num_1g);
8916                         return -EINVAL;
8917                 }
8918         }
8919
8920         parent->port_phy = val;
8921
8922         if (parent->plat_type == PLAT_TYPE_NIU)
8923                 niu_n2_divide_channels(parent);
8924         else
8925                 niu_divide_channels(parent, num_10g, num_1g);
8926
8927         niu_divide_rdc_groups(parent, num_10g, num_1g);
8928
8929         return 0;
8930
8931 unknown_vg_1g_port:
8932         pr_err("Cannot identify platform type, 1gport=%d\n", lowest_1g);
8933         return -EINVAL;
8934 }
8935
8936 static int __devinit niu_probe_ports(struct niu *np)
8937 {
8938         struct niu_parent *parent = np->parent;
8939         int err, i;
8940
8941         if (parent->port_phy == PORT_PHY_UNKNOWN) {
8942                 err = walk_phys(np, parent);
8943                 if (err)
8944                         return err;
8945
8946                 niu_set_ldg_timer_res(np, 2);
8947                 for (i = 0; i <= LDN_MAX; i++)
8948                         niu_ldn_irq_enable(np, i, 0);
8949         }
8950
8951         if (parent->port_phy == PORT_PHY_INVALID)
8952                 return -EINVAL;
8953
8954         return 0;
8955 }
8956
8957 static int __devinit niu_classifier_swstate_init(struct niu *np)
8958 {
8959         struct niu_classifier *cp = &np->clas;
8960
8961         cp->tcam_top = (u16) np->port;
8962         cp->tcam_sz = np->parent->tcam_num_entries / np->parent->num_ports;
8963         cp->h1_init = 0xffffffff;
8964         cp->h2_init = 0xffff;
8965
8966         return fflp_early_init(np);
8967 }
8968
8969 static void __devinit niu_link_config_init(struct niu *np)
8970 {
8971         struct niu_link_config *lp = &np->link_config;
8972
8973         lp->advertising = (ADVERTISED_10baseT_Half |
8974                            ADVERTISED_10baseT_Full |
8975                            ADVERTISED_100baseT_Half |
8976                            ADVERTISED_100baseT_Full |
8977                            ADVERTISED_1000baseT_Half |
8978                            ADVERTISED_1000baseT_Full |
8979                            ADVERTISED_10000baseT_Full |
8980                            ADVERTISED_Autoneg);
8981         lp->speed = lp->active_speed = SPEED_INVALID;
8982         lp->duplex = DUPLEX_FULL;
8983         lp->active_duplex = DUPLEX_INVALID;
8984         lp->autoneg = 1;
8985 #if 0
8986         lp->loopback_mode = LOOPBACK_MAC;
8987         lp->active_speed = SPEED_10000;
8988         lp->active_duplex = DUPLEX_FULL;
8989 #else
8990         lp->loopback_mode = LOOPBACK_DISABLED;
8991 #endif
8992 }
8993
8994 static int __devinit niu_init_mac_ipp_pcs_base(struct niu *np)
8995 {
8996         switch (np->port) {
8997         case 0:
8998                 np->mac_regs = np->regs + XMAC_PORT0_OFF;
8999                 np->ipp_off  = 0x00000;
9000                 np->pcs_off  = 0x04000;
9001                 np->xpcs_off = 0x02000;
9002                 break;
9003
9004         case 1:
9005                 np->mac_regs = np->regs + XMAC_PORT1_OFF;
9006                 np->ipp_off  = 0x08000;
9007                 np->pcs_off  = 0x0a000;
9008                 np->xpcs_off = 0x08000;
9009                 break;
9010
9011         case 2:
9012                 np->mac_regs = np->regs + BMAC_PORT2_OFF;
9013                 np->ipp_off  = 0x04000;
9014                 np->pcs_off  = 0x0e000;
9015                 np->xpcs_off = ~0UL;
9016                 break;
9017
9018         case 3:
9019                 np->mac_regs = np->regs + BMAC_PORT3_OFF;
9020                 np->ipp_off  = 0x0c000;
9021                 np->pcs_off  = 0x12000;
9022                 np->xpcs_off = ~0UL;
9023                 break;
9024
9025         default:
9026                 dev_err(np->device, "Port %u is invalid, cannot compute MAC block offset\n", np->port);
9027                 return -EINVAL;
9028         }
9029
9030         return 0;
9031 }
9032
9033 static void __devinit niu_try_msix(struct niu *np, u8 *ldg_num_map)
9034 {
9035         struct msix_entry msi_vec[NIU_NUM_LDG];
9036         struct niu_parent *parent = np->parent;
9037         struct pci_dev *pdev = np->pdev;
9038         int i, num_irqs, err;
9039         u8 first_ldg;
9040
9041         first_ldg = (NIU_NUM_LDG / parent->num_ports) * np->port;
9042         for (i = 0; i < (NIU_NUM_LDG / parent->num_ports); i++)
9043                 ldg_num_map[i] = first_ldg + i;
9044
9045         num_irqs = (parent->rxchan_per_port[np->port] +
9046                     parent->txchan_per_port[np->port] +
9047                     (np->port == 0 ? 3 : 1));
9048         BUG_ON(num_irqs > (NIU_NUM_LDG / parent->num_ports));
9049
9050 retry:
9051         for (i = 0; i < num_irqs; i++) {
9052                 msi_vec[i].vector = 0;
9053                 msi_vec[i].entry = i;
9054         }
9055
9056         err = pci_enable_msix(pdev, msi_vec, num_irqs);
9057         if (err < 0) {
9058                 np->flags &= ~NIU_FLAGS_MSIX;
9059                 return;
9060         }
9061         if (err > 0) {
9062                 num_irqs = err;
9063                 goto retry;
9064         }
9065
9066         np->flags |= NIU_FLAGS_MSIX;
9067         for (i = 0; i < num_irqs; i++)
9068                 np->ldg[i].irq = msi_vec[i].vector;
9069         np->num_ldg = num_irqs;
9070 }
9071
9072 static int __devinit niu_n2_irq_init(struct niu *np, u8 *ldg_num_map)
9073 {
9074 #ifdef CONFIG_SPARC64
9075         struct platform_device *op = np->op;
9076         const u32 *int_prop;
9077         int i;
9078
9079         int_prop = of_get_property(op->dev.of_node, "interrupts", NULL);
9080         if (!int_prop)
9081                 return -ENODEV;
9082
9083         for (i = 0; i < op->archdata.num_irqs; i++) {
9084                 ldg_num_map[i] = int_prop[i];
9085                 np->ldg[i].irq = op->archdata.irqs[i];
9086         }
9087
9088         np->num_ldg = op->archdata.num_irqs;
9089
9090         return 0;
9091 #else
9092         return -EINVAL;
9093 #endif
9094 }
9095
9096 static int __devinit niu_ldg_init(struct niu *np)
9097 {
9098         struct niu_parent *parent = np->parent;
9099         u8 ldg_num_map[NIU_NUM_LDG];
9100         int first_chan, num_chan;
9101         int i, err, ldg_rotor;
9102         u8 port;
9103
9104         np->num_ldg = 1;
9105         np->ldg[0].irq = np->dev->irq;
9106         if (parent->plat_type == PLAT_TYPE_NIU) {
9107                 err = niu_n2_irq_init(np, ldg_num_map);
9108                 if (err)
9109                         return err;
9110         } else
9111                 niu_try_msix(np, ldg_num_map);
9112
9113         port = np->port;
9114         for (i = 0; i < np->num_ldg; i++) {
9115                 struct niu_ldg *lp = &np->ldg[i];
9116
9117                 netif_napi_add(np->dev, &lp->napi, niu_poll, 64);
9118
9119                 lp->np = np;
9120                 lp->ldg_num = ldg_num_map[i];
9121                 lp->timer = 2; /* XXX */
9122
9123                 /* On N2 NIU the firmware has setup the SID mappings so they go
9124                  * to the correct values that will route the LDG to the proper
9125                  * interrupt in the NCU interrupt table.
9126                  */
9127                 if (np->parent->plat_type != PLAT_TYPE_NIU) {
9128                         err = niu_set_ldg_sid(np, lp->ldg_num, port, i);
9129                         if (err)
9130                                 return err;
9131                 }
9132         }
9133
9134         /* We adopt the LDG assignment ordering used by the N2 NIU
9135          * 'interrupt' properties because that simplifies a lot of
9136          * things.  This ordering is:
9137          *
9138          *      MAC
9139          *      MIF     (if port zero)
9140          *      SYSERR  (if port zero)
9141          *      RX channels
9142          *      TX channels
9143          */
9144
9145         ldg_rotor = 0;
9146
9147         err = niu_ldg_assign_ldn(np, parent, ldg_num_map[ldg_rotor],
9148                                   LDN_MAC(port));
9149         if (err)
9150                 return err;
9151
9152         ldg_rotor++;
9153         if (ldg_rotor == np->num_ldg)
9154                 ldg_rotor = 0;
9155
9156         if (port == 0) {
9157                 err = niu_ldg_assign_ldn(np, parent,
9158                                          ldg_num_map[ldg_rotor],
9159                                          LDN_MIF);
9160                 if (err)
9161                         return err;
9162
9163                 ldg_rotor++;
9164                 if (ldg_rotor == np->num_ldg)
9165                         ldg_rotor = 0;
9166
9167                 err = niu_ldg_assign_ldn(np, parent,
9168                                          ldg_num_map[ldg_rotor],
9169                                          LDN_DEVICE_ERROR);
9170                 if (err)
9171                         return err;
9172
9173                 ldg_rotor++;
9174                 if (ldg_rotor == np->num_ldg)
9175                         ldg_rotor = 0;
9176
9177         }
9178
9179         first_chan = 0;
9180         for (i = 0; i < port; i++)
9181                 first_chan += parent->rxchan_per_port[port];
9182         num_chan = parent->rxchan_per_port[port];
9183
9184         for (i = first_chan; i < (first_chan + num_chan); i++) {
9185                 err = niu_ldg_assign_ldn(np, parent,
9186                                          ldg_num_map[ldg_rotor],
9187                                          LDN_RXDMA(i));
9188                 if (err)
9189                         return err;
9190                 ldg_rotor++;
9191                 if (ldg_rotor == np->num_ldg)
9192                         ldg_rotor = 0;
9193         }
9194
9195         first_chan = 0;
9196         for (i = 0; i < port; i++)
9197                 first_chan += parent->txchan_per_port[port];
9198         num_chan = parent->txchan_per_port[port];
9199         for (i = first_chan; i < (first_chan + num_chan); i++) {
9200                 err = niu_ldg_assign_ldn(np, parent,
9201                                          ldg_num_map[ldg_rotor],
9202                                          LDN_TXDMA(i));
9203                 if (err)
9204                         return err;
9205                 ldg_rotor++;
9206                 if (ldg_rotor == np->num_ldg)
9207                         ldg_rotor = 0;
9208         }
9209
9210         return 0;
9211 }
9212
9213 static void __devexit niu_ldg_free(struct niu *np)
9214 {
9215         if (np->flags & NIU_FLAGS_MSIX)
9216                 pci_disable_msix(np->pdev);
9217 }
9218
9219 static int __devinit niu_get_of_props(struct niu *np)
9220 {
9221 #ifdef CONFIG_SPARC64
9222         struct net_device *dev = np->dev;
9223         struct device_node *dp;
9224         const char *phy_type;
9225         const u8 *mac_addr;
9226         const char *model;
9227         int prop_len;
9228
9229         if (np->parent->plat_type == PLAT_TYPE_NIU)
9230                 dp = np->op->dev.of_node;
9231         else
9232                 dp = pci_device_to_OF_node(np->pdev);
9233
9234         phy_type = of_get_property(dp, "phy-type", &prop_len);
9235         if (!phy_type) {
9236                 netdev_err(dev, "%s: OF node lacks phy-type property\n",
9237                            dp->full_name);
9238                 return -EINVAL;
9239         }
9240
9241         if (!strcmp(phy_type, "none"))
9242                 return -ENODEV;
9243
9244         strcpy(np->vpd.phy_type, phy_type);
9245
9246         if (niu_phy_type_prop_decode(np, np->vpd.phy_type)) {
9247                 netdev_err(dev, "%s: Illegal phy string [%s]\n",
9248                            dp->full_name, np->vpd.phy_type);
9249                 return -EINVAL;
9250         }
9251
9252         mac_addr = of_get_property(dp, "local-mac-address", &prop_len);
9253         if (!mac_addr) {
9254                 netdev_err(dev, "%s: OF node lacks local-mac-address property\n",
9255                            dp->full_name);
9256                 return -EINVAL;
9257         }
9258         if (prop_len != dev->addr_len) {
9259                 netdev_err(dev, "%s: OF MAC address prop len (%d) is wrong\n",
9260                            dp->full_name, prop_len);
9261         }
9262         memcpy(dev->perm_addr, mac_addr, dev->addr_len);
9263         if (!is_valid_ether_addr(&dev->perm_addr[0])) {
9264                 netdev_err(dev, "%s: OF MAC address is invalid\n",
9265                            dp->full_name);
9266                 netdev_err(dev, "%s: [ %pM ]\n", dp->full_name, dev->perm_addr);
9267                 return -EINVAL;
9268         }
9269
9270         memcpy(dev->dev_addr, dev->perm_addr, dev->addr_len);
9271
9272         model = of_get_property(dp, "model", &prop_len);
9273
9274         if (model)
9275                 strcpy(np->vpd.model, model);
9276
9277         if (of_find_property(dp, "hot-swappable-phy", &prop_len)) {
9278                 np->flags |= (NIU_FLAGS_10G | NIU_FLAGS_FIBER |
9279                         NIU_FLAGS_HOTPLUG_PHY);
9280         }
9281
9282         return 0;
9283 #else
9284         return -EINVAL;
9285 #endif
9286 }
9287
9288 static int __devinit niu_get_invariants(struct niu *np)
9289 {
9290         int err, have_props;
9291         u32 offset;
9292
9293         err = niu_get_of_props(np);
9294         if (err == -ENODEV)
9295                 return err;
9296
9297         have_props = !err;
9298
9299         err = niu_init_mac_ipp_pcs_base(np);
9300         if (err)
9301                 return err;
9302
9303         if (have_props) {
9304                 err = niu_get_and_validate_port(np);
9305                 if (err)
9306                         return err;
9307
9308         } else  {
9309                 if (np->parent->plat_type == PLAT_TYPE_NIU)
9310                         return -EINVAL;
9311
9312                 nw64(ESPC_PIO_EN, ESPC_PIO_EN_ENABLE);
9313                 offset = niu_pci_vpd_offset(np);
9314                 netif_printk(np, probe, KERN_DEBUG, np->dev,
9315                              "%s() VPD offset [%08x]\n", __func__, offset);
9316                 if (offset)
9317                         niu_pci_vpd_fetch(np, offset);
9318                 nw64(ESPC_PIO_EN, 0);
9319
9320                 if (np->flags & NIU_FLAGS_VPD_VALID) {
9321                         niu_pci_vpd_validate(np);
9322                         err = niu_get_and_validate_port(np);
9323                         if (err)
9324                                 return err;
9325                 }
9326
9327                 if (!(np->flags & NIU_FLAGS_VPD_VALID)) {
9328                         err = niu_get_and_validate_port(np);
9329                         if (err)
9330                                 return err;
9331                         err = niu_pci_probe_sprom(np);
9332                         if (err)
9333                                 return err;
9334                 }
9335         }
9336
9337         err = niu_probe_ports(np);
9338         if (err)
9339                 return err;
9340
9341         niu_ldg_init(np);
9342
9343         niu_classifier_swstate_init(np);
9344         niu_link_config_init(np);
9345
9346         err = niu_determine_phy_disposition(np);
9347         if (!err)
9348                 err = niu_init_link(np);
9349
9350         return err;
9351 }
9352
9353 static LIST_HEAD(niu_parent_list);
9354 static DEFINE_MUTEX(niu_parent_lock);
9355 static int niu_parent_index;
9356
9357 static ssize_t show_port_phy(struct device *dev,
9358                              struct device_attribute *attr, char *buf)
9359 {
9360         struct platform_device *plat_dev = to_platform_device(dev);
9361         struct niu_parent *p = plat_dev->dev.platform_data;
9362         u32 port_phy = p->port_phy;
9363         char *orig_buf = buf;
9364         int i;
9365
9366         if (port_phy == PORT_PHY_UNKNOWN ||
9367             port_phy == PORT_PHY_INVALID)
9368                 return 0;
9369
9370         for (i = 0; i < p->num_ports; i++) {
9371                 const char *type_str;
9372                 int type;
9373
9374                 type = phy_decode(port_phy, i);
9375                 if (type == PORT_TYPE_10G)
9376                         type_str = "10G";
9377                 else
9378                         type_str = "1G";
9379                 buf += sprintf(buf,
9380                                (i == 0) ? "%s" : " %s",
9381                                type_str);
9382         }
9383         buf += sprintf(buf, "\n");
9384         return buf - orig_buf;
9385 }
9386
9387 static ssize_t show_plat_type(struct device *dev,
9388                               struct device_attribute *attr, char *buf)
9389 {
9390         struct platform_device *plat_dev = to_platform_device(dev);
9391         struct niu_parent *p = plat_dev->dev.platform_data;
9392         const char *type_str;
9393
9394         switch (p->plat_type) {
9395         case PLAT_TYPE_ATLAS:
9396                 type_str = "atlas";
9397                 break;
9398         case PLAT_TYPE_NIU:
9399                 type_str = "niu";
9400                 break;
9401         case PLAT_TYPE_VF_P0:
9402                 type_str = "vf_p0";
9403                 break;
9404         case PLAT_TYPE_VF_P1:
9405                 type_str = "vf_p1";
9406                 break;
9407         default:
9408                 type_str = "unknown";
9409                 break;
9410         }
9411
9412         return sprintf(buf, "%s\n", type_str);
9413 }
9414
9415 static ssize_t __show_chan_per_port(struct device *dev,
9416                                     struct device_attribute *attr, char *buf,
9417                                     int rx)
9418 {
9419         struct platform_device *plat_dev = to_platform_device(dev);
9420         struct niu_parent *p = plat_dev->dev.platform_data;
9421         char *orig_buf = buf;
9422         u8 *arr;
9423         int i;
9424
9425         arr = (rx ? p->rxchan_per_port : p->txchan_per_port);
9426
9427         for (i = 0; i < p->num_ports; i++) {
9428                 buf += sprintf(buf,
9429                                (i == 0) ? "%d" : " %d",
9430                                arr[i]);
9431         }
9432         buf += sprintf(buf, "\n");
9433
9434         return buf - orig_buf;
9435 }
9436
9437 static ssize_t show_rxchan_per_port(struct device *dev,
9438                                     struct device_attribute *attr, char *buf)
9439 {
9440         return __show_chan_per_port(dev, attr, buf, 1);
9441 }
9442
9443 static ssize_t show_txchan_per_port(struct device *dev,
9444                                     struct device_attribute *attr, char *buf)
9445 {
9446         return __show_chan_per_port(dev, attr, buf, 1);
9447 }
9448
9449 static ssize_t show_num_ports(struct device *dev,
9450                               struct device_attribute *attr, char *buf)
9451 {
9452         struct platform_device *plat_dev = to_platform_device(dev);
9453         struct niu_parent *p = plat_dev->dev.platform_data;
9454
9455         return sprintf(buf, "%d\n", p->num_ports);
9456 }
9457
9458 static struct device_attribute niu_parent_attributes[] = {
9459         __ATTR(port_phy, S_IRUGO, show_port_phy, NULL),
9460         __ATTR(plat_type, S_IRUGO, show_plat_type, NULL),
9461         __ATTR(rxchan_per_port, S_IRUGO, show_rxchan_per_port, NULL),
9462         __ATTR(txchan_per_port, S_IRUGO, show_txchan_per_port, NULL),
9463         __ATTR(num_ports, S_IRUGO, show_num_ports, NULL),
9464         {}
9465 };
9466
9467 static struct niu_parent * __devinit niu_new_parent(struct niu *np,
9468                                                     union niu_parent_id *id,
9469                                                     u8 ptype)
9470 {
9471         struct platform_device *plat_dev;
9472         struct niu_parent *p;
9473         int i;
9474
9475         plat_dev = platform_device_register_simple("niu", niu_parent_index,
9476                                                    NULL, 0);
9477         if (IS_ERR(plat_dev))
9478                 return NULL;
9479
9480         for (i = 0; attr_name(niu_parent_attributes[i]); i++) {
9481                 int err = device_create_file(&plat_dev->dev,
9482                                              &niu_parent_attributes[i]);
9483                 if (err)
9484                         goto fail_unregister;
9485         }
9486
9487         p = kzalloc(sizeof(*p), GFP_KERNEL);
9488         if (!p)
9489                 goto fail_unregister;
9490
9491         p->index = niu_parent_index++;
9492
9493         plat_dev->dev.platform_data = p;
9494         p->plat_dev = plat_dev;
9495
9496         memcpy(&p->id, id, sizeof(*id));
9497         p->plat_type = ptype;
9498         INIT_LIST_HEAD(&p->list);
9499         atomic_set(&p->refcnt, 0);
9500         list_add(&p->list, &niu_parent_list);
9501         spin_lock_init(&p->lock);
9502
9503         p->rxdma_clock_divider = 7500;
9504
9505         p->tcam_num_entries = NIU_PCI_TCAM_ENTRIES;
9506         if (p->plat_type == PLAT_TYPE_NIU)
9507                 p->tcam_num_entries = NIU_NONPCI_TCAM_ENTRIES;
9508
9509         for (i = CLASS_CODE_USER_PROG1; i <= CLASS_CODE_SCTP_IPV6; i++) {
9510                 int index = i - CLASS_CODE_USER_PROG1;
9511
9512                 p->tcam_key[index] = TCAM_KEY_TSEL;
9513                 p->flow_key[index] = (FLOW_KEY_IPSA |
9514                                       FLOW_KEY_IPDA |
9515                                       FLOW_KEY_PROTO |
9516                                       (FLOW_KEY_L4_BYTE12 <<
9517                                        FLOW_KEY_L4_0_SHIFT) |
9518                                       (FLOW_KEY_L4_BYTE12 <<
9519                                        FLOW_KEY_L4_1_SHIFT));
9520         }
9521
9522         for (i = 0; i < LDN_MAX + 1; i++)
9523                 p->ldg_map[i] = LDG_INVALID;
9524
9525         return p;
9526
9527 fail_unregister:
9528         platform_device_unregister(plat_dev);
9529         return NULL;
9530 }
9531
9532 static struct niu_parent * __devinit niu_get_parent(struct niu *np,
9533                                                     union niu_parent_id *id,
9534                                                     u8 ptype)
9535 {
9536         struct niu_parent *p, *tmp;
9537         int port = np->port;
9538
9539         mutex_lock(&niu_parent_lock);
9540         p = NULL;
9541         list_for_each_entry(tmp, &niu_parent_list, list) {
9542                 if (!memcmp(id, &tmp->id, sizeof(*id))) {
9543                         p = tmp;
9544                         break;
9545                 }
9546         }
9547         if (!p)
9548                 p = niu_new_parent(np, id, ptype);
9549
9550         if (p) {
9551                 char port_name[6];
9552                 int err;
9553
9554                 sprintf(port_name, "port%d", port);
9555                 err = sysfs_create_link(&p->plat_dev->dev.kobj,
9556                                         &np->device->kobj,
9557                                         port_name);
9558                 if (!err) {
9559                         p->ports[port] = np;
9560                         atomic_inc(&p->refcnt);
9561                 }
9562         }
9563         mutex_unlock(&niu_parent_lock);
9564
9565         return p;
9566 }
9567
9568 static void niu_put_parent(struct niu *np)
9569 {
9570         struct niu_parent *p = np->parent;
9571         u8 port = np->port;
9572         char port_name[6];
9573
9574         BUG_ON(!p || p->ports[port] != np);
9575
9576         netif_printk(np, probe, KERN_DEBUG, np->dev,
9577                      "%s() port[%u]\n", __func__, port);
9578
9579         sprintf(port_name, "port%d", port);
9580
9581         mutex_lock(&niu_parent_lock);
9582
9583         sysfs_remove_link(&p->plat_dev->dev.kobj, port_name);
9584
9585         p->ports[port] = NULL;
9586         np->parent = NULL;
9587
9588         if (atomic_dec_and_test(&p->refcnt)) {
9589                 list_del(&p->list);
9590                 platform_device_unregister(p->plat_dev);
9591         }
9592
9593         mutex_unlock(&niu_parent_lock);
9594 }
9595
9596 static void *niu_pci_alloc_coherent(struct device *dev, size_t size,
9597                                     u64 *handle, gfp_t flag)
9598 {
9599         dma_addr_t dh;
9600         void *ret;
9601
9602         ret = dma_alloc_coherent(dev, size, &dh, flag);
9603         if (ret)
9604                 *handle = dh;
9605         return ret;
9606 }
9607
9608 static void niu_pci_free_coherent(struct device *dev, size_t size,
9609                                   void *cpu_addr, u64 handle)
9610 {
9611         dma_free_coherent(dev, size, cpu_addr, handle);
9612 }
9613
9614 static u64 niu_pci_map_page(struct device *dev, struct page *page,
9615                             unsigned long offset, size_t size,
9616                             enum dma_data_direction direction)
9617 {
9618         return dma_map_page(dev, page, offset, size, direction);
9619 }
9620
9621 static void niu_pci_unmap_page(struct device *dev, u64 dma_address,
9622                                size_t size, enum dma_data_direction direction)
9623 {
9624         dma_unmap_page(dev, dma_address, size, direction);
9625 }
9626
9627 static u64 niu_pci_map_single(struct device *dev, void *cpu_addr,
9628                               size_t size,
9629                               enum dma_data_direction direction)
9630 {
9631         return dma_map_single(dev, cpu_addr, size, direction);
9632 }
9633
9634 static void niu_pci_unmap_single(struct device *dev, u64 dma_address,
9635                                  size_t size,
9636                                  enum dma_data_direction direction)
9637 {
9638         dma_unmap_single(dev, dma_address, size, direction);
9639 }
9640
9641 static const struct niu_ops niu_pci_ops = {
9642         .alloc_coherent = niu_pci_alloc_coherent,
9643         .free_coherent  = niu_pci_free_coherent,
9644         .map_page       = niu_pci_map_page,
9645         .unmap_page     = niu_pci_unmap_page,
9646         .map_single     = niu_pci_map_single,
9647         .unmap_single   = niu_pci_unmap_single,
9648 };
9649
9650 static void __devinit niu_driver_version(void)
9651 {
9652         static int niu_version_printed;
9653
9654         if (niu_version_printed++ == 0)
9655                 pr_info("%s", version);
9656 }
9657
9658 static struct net_device * __devinit niu_alloc_and_init(
9659         struct device *gen_dev, struct pci_dev *pdev,
9660         struct platform_device *op, const struct niu_ops *ops,
9661         u8 port)
9662 {
9663         struct net_device *dev;
9664         struct niu *np;
9665
9666         dev = alloc_etherdev_mq(sizeof(struct niu), NIU_NUM_TXCHAN);
9667         if (!dev) {
9668                 dev_err(gen_dev, "Etherdev alloc failed, aborting\n");
9669                 return NULL;
9670         }
9671
9672         SET_NETDEV_DEV(dev, gen_dev);
9673
9674         np = netdev_priv(dev);
9675         np->dev = dev;
9676         np->pdev = pdev;
9677         np->op = op;
9678         np->device = gen_dev;
9679         np->ops = ops;
9680
9681         np->msg_enable = niu_debug;
9682
9683         spin_lock_init(&np->lock);
9684         INIT_WORK(&np->reset_task, niu_reset_task);
9685
9686         np->port = port;
9687
9688         return dev;
9689 }
9690
9691 static const struct net_device_ops niu_netdev_ops = {
9692         .ndo_open               = niu_open,
9693         .ndo_stop               = niu_close,
9694         .ndo_start_xmit         = niu_start_xmit,
9695         .ndo_get_stats          = niu_get_stats,
9696         .ndo_set_multicast_list = niu_set_rx_mode,
9697         .ndo_validate_addr      = eth_validate_addr,
9698         .ndo_set_mac_address    = niu_set_mac_addr,
9699         .ndo_do_ioctl           = niu_ioctl,
9700         .ndo_tx_timeout         = niu_tx_timeout,
9701         .ndo_change_mtu         = niu_change_mtu,
9702 };
9703
9704 static void __devinit niu_assign_netdev_ops(struct net_device *dev)
9705 {
9706         dev->netdev_ops = &niu_netdev_ops;
9707         dev->ethtool_ops = &niu_ethtool_ops;
9708         dev->watchdog_timeo = NIU_TX_TIMEOUT;
9709 }
9710
9711 static void __devinit niu_device_announce(struct niu *np)
9712 {
9713         struct net_device *dev = np->dev;
9714
9715         pr_info("%s: NIU Ethernet %pM\n", dev->name, dev->dev_addr);
9716
9717         if (np->parent->plat_type == PLAT_TYPE_ATCA_CP3220) {
9718                 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9719                                 dev->name,
9720                                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9721                                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9722                                 (np->flags & NIU_FLAGS_FIBER ? "RGMII FIBER" : "SERDES"),
9723                                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9724                                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9725                                 np->vpd.phy_type);
9726         } else {
9727                 pr_info("%s: Port type[%s] mode[%s:%s] XCVR[%s] phy[%s]\n",
9728                                 dev->name,
9729                                 (np->flags & NIU_FLAGS_XMAC ? "XMAC" : "BMAC"),
9730                                 (np->flags & NIU_FLAGS_10G ? "10G" : "1G"),
9731                                 (np->flags & NIU_FLAGS_FIBER ? "FIBER" :
9732                                  (np->flags & NIU_FLAGS_XCVR_SERDES ? "SERDES" :
9733                                   "COPPER")),
9734                                 (np->mac_xcvr == MAC_XCVR_MII ? "MII" :
9735                                  (np->mac_xcvr == MAC_XCVR_PCS ? "PCS" : "XPCS")),
9736                                 np->vpd.phy_type);
9737         }
9738 }
9739
9740 static void __devinit niu_set_basic_features(struct net_device *dev)
9741 {
9742         dev->features |= (NETIF_F_SG | NETIF_F_HW_CSUM |
9743                           NETIF_F_GRO | NETIF_F_RXHASH);
9744 }
9745
9746 static int __devinit niu_pci_init_one(struct pci_dev *pdev,
9747                                       const struct pci_device_id *ent)
9748 {
9749         union niu_parent_id parent_id;
9750         struct net_device *dev;
9751         struct niu *np;
9752         int err, pos;
9753         u64 dma_mask;
9754         u16 val16;
9755
9756         niu_driver_version();
9757
9758         err = pci_enable_device(pdev);
9759         if (err) {
9760                 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n");
9761                 return err;
9762         }
9763
9764         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM) ||
9765             !(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) {
9766                 dev_err(&pdev->dev, "Cannot find proper PCI device base addresses, aborting\n");
9767                 err = -ENODEV;
9768                 goto err_out_disable_pdev;
9769         }
9770
9771         err = pci_request_regions(pdev, DRV_MODULE_NAME);
9772         if (err) {
9773                 dev_err(&pdev->dev, "Cannot obtain PCI resources, aborting\n");
9774                 goto err_out_disable_pdev;
9775         }
9776
9777         pos = pci_find_capability(pdev, PCI_CAP_ID_EXP);
9778         if (pos <= 0) {
9779                 dev_err(&pdev->dev, "Cannot find PCI Express capability, aborting\n");
9780                 goto err_out_free_res;
9781         }
9782
9783         dev = niu_alloc_and_init(&pdev->dev, pdev, NULL,
9784                                  &niu_pci_ops, PCI_FUNC(pdev->devfn));
9785         if (!dev) {
9786                 err = -ENOMEM;
9787                 goto err_out_free_res;
9788         }
9789         np = netdev_priv(dev);
9790
9791         memset(&parent_id, 0, sizeof(parent_id));
9792         parent_id.pci.domain = pci_domain_nr(pdev->bus);
9793         parent_id.pci.bus = pdev->bus->number;
9794         parent_id.pci.device = PCI_SLOT(pdev->devfn);
9795
9796         np->parent = niu_get_parent(np, &parent_id,
9797                                     PLAT_TYPE_ATLAS);
9798         if (!np->parent) {
9799                 err = -ENOMEM;
9800                 goto err_out_free_dev;
9801         }
9802
9803         pci_read_config_word(pdev, pos + PCI_EXP_DEVCTL, &val16);
9804         val16 &= ~PCI_EXP_DEVCTL_NOSNOOP_EN;
9805         val16 |= (PCI_EXP_DEVCTL_CERE |
9806                   PCI_EXP_DEVCTL_NFERE |
9807                   PCI_EXP_DEVCTL_FERE |
9808                   PCI_EXP_DEVCTL_URRE |
9809                   PCI_EXP_DEVCTL_RELAX_EN);
9810         pci_write_config_word(pdev, pos + PCI_EXP_DEVCTL, val16);
9811
9812         dma_mask = DMA_BIT_MASK(44);
9813         err = pci_set_dma_mask(pdev, dma_mask);
9814         if (!err) {
9815                 dev->features |= NETIF_F_HIGHDMA;
9816                 err = pci_set_consistent_dma_mask(pdev, dma_mask);
9817                 if (err) {
9818                         dev_err(&pdev->dev, "Unable to obtain 44 bit DMA for consistent allocations, aborting\n");
9819                         goto err_out_release_parent;
9820                 }
9821         }
9822         if (err || dma_mask == DMA_BIT_MASK(32)) {
9823                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9824                 if (err) {
9825                         dev_err(&pdev->dev, "No usable DMA configuration, aborting\n");
9826                         goto err_out_release_parent;
9827                 }
9828         }
9829
9830         niu_set_basic_features(dev);
9831
9832         np->regs = pci_ioremap_bar(pdev, 0);
9833         if (!np->regs) {
9834                 dev_err(&pdev->dev, "Cannot map device registers, aborting\n");
9835                 err = -ENOMEM;
9836                 goto err_out_release_parent;
9837         }
9838
9839         pci_set_master(pdev);
9840         pci_save_state(pdev);
9841
9842         dev->irq = pdev->irq;
9843
9844         niu_assign_netdev_ops(dev);
9845
9846         err = niu_get_invariants(np);
9847         if (err) {
9848                 if (err != -ENODEV)
9849                         dev_err(&pdev->dev, "Problem fetching invariants of chip, aborting\n");
9850                 goto err_out_iounmap;
9851         }
9852
9853         err = register_netdev(dev);
9854         if (err) {
9855                 dev_err(&pdev->dev, "Cannot register net device, aborting\n");
9856                 goto err_out_iounmap;
9857         }
9858
9859         pci_set_drvdata(pdev, dev);
9860
9861         niu_device_announce(np);
9862
9863         return 0;
9864
9865 err_out_iounmap:
9866         if (np->regs) {
9867                 iounmap(np->regs);
9868                 np->regs = NULL;
9869         }
9870
9871 err_out_release_parent:
9872         niu_put_parent(np);
9873
9874 err_out_free_dev:
9875         free_netdev(dev);
9876
9877 err_out_free_res:
9878         pci_release_regions(pdev);
9879
9880 err_out_disable_pdev:
9881         pci_disable_device(pdev);
9882         pci_set_drvdata(pdev, NULL);
9883
9884         return err;
9885 }
9886
9887 static void __devexit niu_pci_remove_one(struct pci_dev *pdev)
9888 {
9889         struct net_device *dev = pci_get_drvdata(pdev);
9890
9891         if (dev) {
9892                 struct niu *np = netdev_priv(dev);
9893
9894                 unregister_netdev(dev);
9895                 if (np->regs) {
9896                         iounmap(np->regs);
9897                         np->regs = NULL;
9898                 }
9899
9900                 niu_ldg_free(np);
9901
9902                 niu_put_parent(np);
9903
9904                 free_netdev(dev);
9905                 pci_release_regions(pdev);
9906                 pci_disable_device(pdev);
9907                 pci_set_drvdata(pdev, NULL);
9908         }
9909 }
9910
9911 static int niu_suspend(struct pci_dev *pdev, pm_message_t state)
9912 {
9913         struct net_device *dev = pci_get_drvdata(pdev);
9914         struct niu *np = netdev_priv(dev);
9915         unsigned long flags;
9916
9917         if (!netif_running(dev))
9918                 return 0;
9919
9920         flush_scheduled_work();
9921         niu_netif_stop(np);
9922
9923         del_timer_sync(&np->timer);
9924
9925         spin_lock_irqsave(&np->lock, flags);
9926         niu_enable_interrupts(np, 0);
9927         spin_unlock_irqrestore(&np->lock, flags);
9928
9929         netif_device_detach(dev);
9930
9931         spin_lock_irqsave(&np->lock, flags);
9932         niu_stop_hw(np);
9933         spin_unlock_irqrestore(&np->lock, flags);
9934
9935         pci_save_state(pdev);
9936
9937         return 0;
9938 }
9939
9940 static int niu_resume(struct pci_dev *pdev)
9941 {
9942         struct net_device *dev = pci_get_drvdata(pdev);
9943         struct niu *np = netdev_priv(dev);
9944         unsigned long flags;
9945         int err;
9946
9947         if (!netif_running(dev))
9948                 return 0;
9949
9950         pci_restore_state(pdev);
9951
9952         netif_device_attach(dev);
9953
9954         spin_lock_irqsave(&np->lock, flags);
9955
9956         err = niu_init_hw(np);
9957         if (!err) {
9958                 np->timer.expires = jiffies + HZ;
9959                 add_timer(&np->timer);
9960                 niu_netif_start(np);
9961         }
9962
9963         spin_unlock_irqrestore(&np->lock, flags);
9964
9965         return err;
9966 }
9967
9968 static struct pci_driver niu_pci_driver = {
9969         .name           = DRV_MODULE_NAME,
9970         .id_table       = niu_pci_tbl,
9971         .probe          = niu_pci_init_one,
9972         .remove         = __devexit_p(niu_pci_remove_one),
9973         .suspend        = niu_suspend,
9974         .resume         = niu_resume,
9975 };
9976
9977 #ifdef CONFIG_SPARC64
9978 static void *niu_phys_alloc_coherent(struct device *dev, size_t size,
9979                                      u64 *dma_addr, gfp_t flag)
9980 {
9981         unsigned long order = get_order(size);
9982         unsigned long page = __get_free_pages(flag, order);
9983
9984         if (page == 0UL)
9985                 return NULL;
9986         memset((char *)page, 0, PAGE_SIZE << order);
9987         *dma_addr = __pa(page);
9988
9989         return (void *) page;
9990 }
9991
9992 static void niu_phys_free_coherent(struct device *dev, size_t size,
9993                                    void *cpu_addr, u64 handle)
9994 {
9995         unsigned long order = get_order(size);
9996
9997         free_pages((unsigned long) cpu_addr, order);
9998 }
9999
10000 static u64 niu_phys_map_page(struct device *dev, struct page *page,
10001                              unsigned long offset, size_t size,
10002                              enum dma_data_direction direction)
10003 {
10004         return page_to_phys(page) + offset;
10005 }
10006
10007 static void niu_phys_unmap_page(struct device *dev, u64 dma_address,
10008                                 size_t size, enum dma_data_direction direction)
10009 {
10010         /* Nothing to do.  */
10011 }
10012
10013 static u64 niu_phys_map_single(struct device *dev, void *cpu_addr,
10014                                size_t size,
10015                                enum dma_data_direction direction)
10016 {
10017         return __pa(cpu_addr);
10018 }
10019
10020 static void niu_phys_unmap_single(struct device *dev, u64 dma_address,
10021                                   size_t size,
10022                                   enum dma_data_direction direction)
10023 {
10024         /* Nothing to do.  */
10025 }
10026
10027 static const struct niu_ops niu_phys_ops = {
10028         .alloc_coherent = niu_phys_alloc_coherent,
10029         .free_coherent  = niu_phys_free_coherent,
10030         .map_page       = niu_phys_map_page,
10031         .unmap_page     = niu_phys_unmap_page,
10032         .map_single     = niu_phys_map_single,
10033         .unmap_single   = niu_phys_unmap_single,
10034 };
10035
10036 static int __devinit niu_of_probe(struct platform_device *op,
10037                                   const struct of_device_id *match)
10038 {
10039         union niu_parent_id parent_id;
10040         struct net_device *dev;
10041         struct niu *np;
10042         const u32 *reg;
10043         int err;
10044
10045         niu_driver_version();
10046
10047         reg = of_get_property(op->dev.of_node, "reg", NULL);
10048         if (!reg) {
10049                 dev_err(&op->dev, "%s: No 'reg' property, aborting\n",
10050                         op->dev.of_node->full_name);
10051                 return -ENODEV;
10052         }
10053
10054         dev = niu_alloc_and_init(&op->dev, NULL, op,
10055                                  &niu_phys_ops, reg[0] & 0x1);
10056         if (!dev) {
10057                 err = -ENOMEM;
10058                 goto err_out;
10059         }
10060         np = netdev_priv(dev);
10061
10062         memset(&parent_id, 0, sizeof(parent_id));
10063         parent_id.of = of_get_parent(op->dev.of_node);
10064
10065         np->parent = niu_get_parent(np, &parent_id,
10066                                     PLAT_TYPE_NIU);
10067         if (!np->parent) {
10068                 err = -ENOMEM;
10069                 goto err_out_free_dev;
10070         }
10071
10072         niu_set_basic_features(dev);
10073
10074         np->regs = of_ioremap(&op->resource[1], 0,
10075                               resource_size(&op->resource[1]),
10076                               "niu regs");
10077         if (!np->regs) {
10078                 dev_err(&op->dev, "Cannot map device registers, aborting\n");
10079                 err = -ENOMEM;
10080                 goto err_out_release_parent;
10081         }
10082
10083         np->vir_regs_1 = of_ioremap(&op->resource[2], 0,
10084                                     resource_size(&op->resource[2]),
10085                                     "niu vregs-1");
10086         if (!np->vir_regs_1) {
10087                 dev_err(&op->dev, "Cannot map device vir registers 1, aborting\n");
10088                 err = -ENOMEM;
10089                 goto err_out_iounmap;
10090         }
10091
10092         np->vir_regs_2 = of_ioremap(&op->resource[3], 0,
10093                                     resource_size(&op->resource[3]),
10094                                     "niu vregs-2");
10095         if (!np->vir_regs_2) {
10096                 dev_err(&op->dev, "Cannot map device vir registers 2, aborting\n");
10097                 err = -ENOMEM;
10098                 goto err_out_iounmap;
10099         }
10100
10101         niu_assign_netdev_ops(dev);
10102
10103         err = niu_get_invariants(np);
10104         if (err) {
10105                 if (err != -ENODEV)
10106                         dev_err(&op->dev, "Problem fetching invariants of chip, aborting\n");
10107                 goto err_out_iounmap;
10108         }
10109
10110         err = register_netdev(dev);
10111         if (err) {
10112                 dev_err(&op->dev, "Cannot register net device, aborting\n");
10113                 goto err_out_iounmap;
10114         }
10115
10116         dev_set_drvdata(&op->dev, dev);
10117
10118         niu_device_announce(np);
10119
10120         return 0;
10121
10122 err_out_iounmap:
10123         if (np->vir_regs_1) {
10124                 of_iounmap(&op->resource[2], np->vir_regs_1,
10125                            resource_size(&op->resource[2]));
10126                 np->vir_regs_1 = NULL;
10127         }
10128
10129         if (np->vir_regs_2) {
10130                 of_iounmap(&op->resource[3], np->vir_regs_2,
10131                            resource_size(&op->resource[3]));
10132                 np->vir_regs_2 = NULL;
10133         }
10134
10135         if (np->regs) {
10136                 of_iounmap(&op->resource[1], np->regs,
10137                            resource_size(&op->resource[1]));
10138                 np->regs = NULL;
10139         }
10140
10141 err_out_release_parent:
10142         niu_put_parent(np);
10143
10144 err_out_free_dev:
10145         free_netdev(dev);
10146
10147 err_out:
10148         return err;
10149 }
10150
10151 static int __devexit niu_of_remove(struct platform_device *op)
10152 {
10153         struct net_device *dev = dev_get_drvdata(&op->dev);
10154
10155         if (dev) {
10156                 struct niu *np = netdev_priv(dev);
10157
10158                 unregister_netdev(dev);
10159
10160                 if (np->vir_regs_1) {
10161                         of_iounmap(&op->resource[2], np->vir_regs_1,
10162                                    resource_size(&op->resource[2]));
10163                         np->vir_regs_1 = NULL;
10164                 }
10165
10166                 if (np->vir_regs_2) {
10167                         of_iounmap(&op->resource[3], np->vir_regs_2,
10168                                    resource_size(&op->resource[3]));
10169                         np->vir_regs_2 = NULL;
10170                 }
10171
10172                 if (np->regs) {
10173                         of_iounmap(&op->resource[1], np->regs,
10174                                    resource_size(&op->resource[1]));
10175                         np->regs = NULL;
10176                 }
10177
10178                 niu_ldg_free(np);
10179
10180                 niu_put_parent(np);
10181
10182                 free_netdev(dev);
10183                 dev_set_drvdata(&op->dev, NULL);
10184         }
10185         return 0;
10186 }
10187
10188 static const struct of_device_id niu_match[] = {
10189         {
10190                 .name = "network",
10191                 .compatible = "SUNW,niusl",
10192         },
10193         {},
10194 };
10195 MODULE_DEVICE_TABLE(of, niu_match);
10196
10197 static struct of_platform_driver niu_of_driver = {
10198         .driver = {
10199                 .name = "niu",
10200                 .owner = THIS_MODULE,
10201                 .of_match_table = niu_match,
10202         },
10203         .probe          = niu_of_probe,
10204         .remove         = __devexit_p(niu_of_remove),
10205 };
10206
10207 #endif /* CONFIG_SPARC64 */
10208
10209 static int __init niu_init(void)
10210 {
10211         int err = 0;
10212
10213         BUILD_BUG_ON(PAGE_SIZE < 4 * 1024);
10214
10215         niu_debug = netif_msg_init(debug, NIU_MSG_DEFAULT);
10216
10217 #ifdef CONFIG_SPARC64
10218         err = of_register_platform_driver(&niu_of_driver);
10219 #endif
10220
10221         if (!err) {
10222                 err = pci_register_driver(&niu_pci_driver);
10223 #ifdef CONFIG_SPARC64
10224                 if (err)
10225                         of_unregister_platform_driver(&niu_of_driver);
10226 #endif
10227         }
10228
10229         return err;
10230 }
10231
10232 static void __exit niu_exit(void)
10233 {
10234         pci_unregister_driver(&niu_pci_driver);
10235 #ifdef CONFIG_SPARC64
10236         of_unregister_platform_driver(&niu_of_driver);
10237 #endif
10238 }
10239
10240 module_init(niu_init);
10241 module_exit(niu_exit);