drivers/net/r8169.c

   1 /*
   2  * r8169.c: RealTek 8169/8168/8101 ethernet driver.
   3  *
   4  * Copyright (c) 2002 ShuChen <shuchen@realtek.com.tw>
   5  * Copyright (c) 2003 - 2007 Francois Romieu <romieu@fr.zoreil.com>
   6  * Copyright (c) a lot of people too. Please respect their work.
   7  *
   8  * See MAINTAINERS file for support contact information.
   9  */
  10
  11 #include <linux/module.h>
  12 #include <linux/moduleparam.h>
  13 #include <linux/pci.h>
  14 #include <linux/netdevice.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/delay.h>
  17 #include <linux/ethtool.h>
  18 #include <linux/mii.h>
  19 #include <linux/if_vlan.h>
  20 #include <linux/crc32.h>
  21 #include <linux/in.h>
  22 #include <linux/ip.h>
  23 #include <linux/tcp.h>
  24 #include <linux/init.h>
  25 #include <linux/dma-mapping.h>
  26
  27 #include <asm/system.h>
  28 #include <asm/io.h>
  29 #include <asm/irq.h>
  30
  31 #ifdef CONFIG_R8169_NAPI
  32 #define NAPI_SUFFIX     "-NAPI"
  33 #else
  34 #define NAPI_SUFFIX     ""
  35 #endif
  36
  37 #define RTL8169_VERSION "2.2LK" NAPI_SUFFIX
  38 #define MODULENAME "r8169"
  39 #define PFX MODULENAME ": "
  40
  41 #ifdef RTL8169_DEBUG
  42 #define assert(expr) \
  43         if (!(expr)) {                                  \
  44                 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
  45                 #expr,__FILE__,__FUNCTION__,__LINE__);          \
  46         }
  47 #define dprintk(fmt, args...)   do { printk(PFX fmt, ## args); } while (0)
  48 #else
  49 #define assert(expr) do {} while (0)
  50 #define dprintk(fmt, args...)   do {} while (0)
  51 #endif /* RTL8169_DEBUG */
  52
  53 #define R8169_MSG_DEFAULT \
  54         (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
  55
  56 #define TX_BUFFS_AVAIL(tp) \
  57         (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)
  58
  59 #ifdef CONFIG_R8169_NAPI
  60 #define rtl8169_rx_skb                  netif_receive_skb
  61 #define rtl8169_rx_hwaccel_skb          vlan_hwaccel_receive_skb
  62 #define rtl8169_rx_quota(count, quota)  min(count, quota)
  63 #else
  64 #define rtl8169_rx_skb                  netif_rx
  65 #define rtl8169_rx_hwaccel_skb          vlan_hwaccel_rx
  66 #define rtl8169_rx_quota(count, quota)  count
  67 #endif
  68
  69 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
  70 static const int max_interrupt_work = 20;
  71
  72 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
  73    The RTL chips use a 64 element hash table based on the Ethernet CRC. */
  74 static const int multicast_filter_limit = 32;
  75
  76 /* MAC address length */
  77 #define MAC_ADDR_LEN    6
  78
  79 #define RX_FIFO_THRESH  7       /* 7 means NO threshold, Rx buffer level before first PCI xfer. */
  80 #define RX_DMA_BURST    6       /* Maximum PCI burst, '6' is 1024 */
  81 #define TX_DMA_BURST    6       /* Maximum PCI burst, '6' is 1024 */
  82 #define EarlyTxThld     0x3F    /* 0x3F means NO early transmit */
  83 #define RxPacketMaxSize 0x3FE8  /* 16K - 1 - ETH_HLEN - VLAN - CRC... */
  84 #define SafeMtu         0x1c20  /* ... actually life sucks beyond ~7k */
  85 #define InterFrameGap   0x03    /* 3 means InterFrameGap = the shortest one */
  86
  87 #define R8169_REGS_SIZE         256
  88 #define R8169_NAPI_WEIGHT       64
  89 #define NUM_TX_DESC     64      /* Number of Tx descriptor registers */
  90 #define NUM_RX_DESC     256     /* Number of Rx descriptor registers */
  91 #define RX_BUF_SIZE     1536    /* Rx Buffer size */
  92 #define R8169_TX_RING_BYTES     (NUM_TX_DESC * sizeof(struct TxDesc))
  93 #define R8169_RX_RING_BYTES     (NUM_RX_DESC * sizeof(struct RxDesc))
  94
  95 #define RTL8169_TX_TIMEOUT      (6*HZ)
  96 #define RTL8169_PHY_TIMEOUT     (10*HZ)
  97
  98 /* write/read MMIO register */
  99 #define RTL_W8(reg, val8)       writeb ((val8), ioaddr + (reg))
 100 #define RTL_W16(reg, val16)     writew ((val16), ioaddr + (reg))
 101 #define RTL_W32(reg, val32)     writel ((val32), ioaddr + (reg))
 102 #define RTL_R8(reg)             readb (ioaddr + (reg))
 103 #define RTL_R16(reg)            readw (ioaddr + (reg))
 104 #define RTL_R32(reg)            ((unsigned long) readl (ioaddr + (reg)))
 105
 106 enum mac_version {
 107         RTL_GIGA_MAC_VER_01 = 0x01, // 8169
 108         RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
 109         RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
 110         RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
 111         RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
 112         RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
 113         RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
 114         RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be 8168Bf
 115         RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb 8101Ec
 116         RTL_GIGA_MAC_VER_14 = 0x0e, // 8101
 117         RTL_GIGA_MAC_VER_15 = 0x0f  // 8101
 118 };
 119
 120 enum phy_version {
 121         RTL_GIGA_PHY_VER_C = 0x03, /* PHY Reg 0x03 bit0-3 == 0x0000 */
 122         RTL_GIGA_PHY_VER_D = 0x04, /* PHY Reg 0x03 bit0-3 == 0x0000 */
 123         RTL_GIGA_PHY_VER_E = 0x05, /* PHY Reg 0x03 bit0-3 == 0x0000 */
 124         RTL_GIGA_PHY_VER_F = 0x06, /* PHY Reg 0x03 bit0-3 == 0x0001 */
 125         RTL_GIGA_PHY_VER_G = 0x07, /* PHY Reg 0x03 bit0-3 == 0x0002 */
 126         RTL_GIGA_PHY_VER_H = 0x08, /* PHY Reg 0x03 bit0-3 == 0x0003 */
 127 };
 128
 129 #define _R(NAME,MAC,MASK) \
 130         { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
 131
 132 static const struct {
 133         const char *name;
 134         u8 mac_version;
 135         u32 RxConfigMask;       /* Clears the bits supported by this chip */
 136 } rtl_chip_info[] = {
 137         _R("RTL8169",           RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
 138         _R("RTL8169s",          RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
 139         _R("RTL8110s",          RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
 140         _R("RTL8169sb/8110sb",  RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
 141         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
 142         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
 143         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
 144         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
 145         _R("RTL8101e",          RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
 146         _R("RTL8100e",          RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
 147         _R("RTL8100e",          RTL_GIGA_MAC_VER_15, 0xff7e1880)  // PCI-E 8139
 148 };
 149 #undef _R
 150
 151 enum cfg_version {
 152         RTL_CFG_0 = 0x00,
 153         RTL_CFG_1,
 154         RTL_CFG_2
 155 };
 156
 157 static void rtl_hw_start_8169(struct net_device *);
 158 static void rtl_hw_start_8168(struct net_device *);
 159 static void rtl_hw_start_8101(struct net_device *);
 160
 161 static struct pci_device_id rtl8169_pci_tbl[] = {
 162         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8129), 0, 0, RTL_CFG_0 },
 163         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8136), 0, 0, RTL_CFG_2 },
 164         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8167), 0, 0, RTL_CFG_0 },
 165         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8168), 0, 0, RTL_CFG_1 },
 166         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8169), 0, 0, RTL_CFG_0 },
 167         { PCI_DEVICE(PCI_VENDOR_ID_DLINK,       0x4300), 0, 0, RTL_CFG_0 },
 168         { PCI_DEVICE(0x1259,                    0xc107), 0, 0, RTL_CFG_0 },
 169         { PCI_DEVICE(0x16ec,                    0x0116), 0, 0, RTL_CFG_0 },
 170         { PCI_VENDOR_ID_LINKSYS,                0x1032,
 171                 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
 172         {0,},
 173 };
 174
 175 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
 176
 177 static int rx_copybreak = 200;
 178 static int use_dac;
 179 static struct {
 180         u32 msg_enable;
 181 } debug = { -1 };
 182
 183 enum rtl_registers {
 184         MAC0            = 0,    /* Ethernet hardware address. */
 185         MAC4            = 4,
 186         MAR0            = 8,    /* Multicast filter. */
 187         CounterAddrLow          = 0x10,
 188         CounterAddrHigh         = 0x14,
 189         TxDescStartAddrLow      = 0x20,
 190         TxDescStartAddrHigh     = 0x24,
 191         TxHDescStartAddrLow     = 0x28,
 192         TxHDescStartAddrHigh    = 0x2c,
 193         FLASH           = 0x30,
 194         ERSR            = 0x36,
 195         ChipCmd         = 0x37,
 196         TxPoll          = 0x38,
 197         IntrMask        = 0x3c,
 198         IntrStatus      = 0x3e,
 199         TxConfig        = 0x40,
 200         RxConfig        = 0x44,
 201         RxMissed        = 0x4c,
 202         Cfg9346         = 0x50,
 203         Config0         = 0x51,
 204         Config1         = 0x52,
 205         Config2         = 0x53,
 206         Config3         = 0x54,
 207         Config4         = 0x55,
 208         Config5         = 0x56,
 209         MultiIntr       = 0x5c,
 210         PHYAR           = 0x60,
 211         TBICSR          = 0x64,
 212         TBI_ANAR        = 0x68,
 213         TBI_LPAR        = 0x6a,
 214         PHYstatus       = 0x6c,
 215         RxMaxSize       = 0xda,
 216         CPlusCmd        = 0xe0,
 217         IntrMitigate    = 0xe2,
 218         RxDescAddrLow   = 0xe4,
 219         RxDescAddrHigh  = 0xe8,
 220         EarlyTxThres    = 0xec,
 221         FuncEvent       = 0xf0,
 222         FuncEventMask   = 0xf4,
 223         FuncPresetState = 0xf8,
 224         FuncForceEvent  = 0xfc,
 225 };
 226
 227 enum rtl_register_content {
 228         /* InterruptStatusBits */
 229         SYSErr          = 0x8000,
 230         PCSTimeout      = 0x4000,
 231         SWInt           = 0x0100,
 232         TxDescUnavail   = 0x0080,
 233         RxFIFOOver      = 0x0040,
 234         LinkChg         = 0x0020,
 235         RxOverflow      = 0x0010,
 236         TxErr           = 0x0008,
 237         TxOK            = 0x0004,
 238         RxErr           = 0x0002,
 239         RxOK            = 0x0001,
 240
 241         /* RxStatusDesc */
 242         RxFOVF  = (1 << 23),
 243         RxRWT   = (1 << 22),
 244         RxRES   = (1 << 21),
 245         RxRUNT  = (1 << 20),
 246         RxCRC   = (1 << 19),
 247
 248         /* ChipCmdBits */
 249         CmdReset        = 0x10,
 250         CmdRxEnb        = 0x08,
 251         CmdTxEnb        = 0x04,
 252         RxBufEmpty      = 0x01,
 253
 254         /* TXPoll register p.5 */
 255         HPQ             = 0x80,         /* Poll cmd on the high prio queue */
 256         NPQ             = 0x40,         /* Poll cmd on the low prio queue */
 257         FSWInt          = 0x01,         /* Forced software interrupt */
 258
 259         /* Cfg9346Bits */
 260         Cfg9346_Lock    = 0x00,
 261         Cfg9346_Unlock  = 0xc0,
 262
 263         /* rx_mode_bits */
 264         AcceptErr       = 0x20,
 265         AcceptRunt      = 0x10,
 266         AcceptBroadcast = 0x08,
 267         AcceptMulticast = 0x04,
 268         AcceptMyPhys    = 0x02,
 269         AcceptAllPhys   = 0x01,
 270
 271         /* RxConfigBits */
 272         RxCfgFIFOShift  = 13,
 273         RxCfgDMAShift   =  8,
 274
 275         /* TxConfigBits */
 276         TxInterFrameGapShift = 24,
 277         TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
 278
 279         /* Config1 register p.24 */
 280         PMEnable        = (1 << 0),     /* Power Management Enable */
 281
 282         /* Config2 register p. 25 */
 283         PCI_Clock_66MHz = 0x01,
 284         PCI_Clock_33MHz = 0x00,
 285
 286         /* Config3 register p.25 */
 287         MagicPacket     = (1 << 5),     /* Wake up when receives a Magic Packet */
 288         LinkUp          = (1 << 4),     /* Wake up when the cable connection is re-established */
 289
 290         /* Config5 register p.27 */
 291         BWF             = (1 << 6),     /* Accept Broadcast wakeup frame */
 292         MWF             = (1 << 5),     /* Accept Multicast wakeup frame */
 293         UWF             = (1 << 4),     /* Accept Unicast wakeup frame */
 294         LanWake         = (1 << 1),     /* LanWake enable/disable */
 295         PMEStatus       = (1 << 0),     /* PME status can be reset by PCI RST# */
 296
 297         /* TBICSR p.28 */
 298         TBIReset        = 0x80000000,
 299         TBILoopback     = 0x40000000,
 300         TBINwEnable     = 0x20000000,
 301         TBINwRestart    = 0x10000000,
 302         TBILinkOk       = 0x02000000,
 303         TBINwComplete   = 0x01000000,
 304
 305         /* CPlusCmd p.31 */
 306         PktCntrDisable  = (1 << 7),     // 8168
 307         RxVlan          = (1 << 6),
 308         RxChkSum        = (1 << 5),
 309         PCIDAC          = (1 << 4),
 310         PCIMulRW        = (1 << 3),
 311         INTT_0          = 0x0000,       // 8168
 312         INTT_1          = 0x0001,       // 8168
 313         INTT_2          = 0x0002,       // 8168
 314         INTT_3          = 0x0003,       // 8168
 315
 316         /* rtl8169_PHYstatus */
 317         TBI_Enable      = 0x80,
 318         TxFlowCtrl      = 0x40,
 319         RxFlowCtrl      = 0x20,
 320         _1000bpsF       = 0x10,
 321         _100bps         = 0x08,
 322         _10bps          = 0x04,
 323         LinkStatus      = 0x02,
 324         FullDup         = 0x01,
 325
 326         /* _TBICSRBit */
 327         TBILinkOK       = 0x02000000,
 328
 329         /* DumpCounterCommand */
 330         CounterDump     = 0x8,
 331 };
 332
 333 enum desc_status_bit {
 334         DescOwn         = (1 << 31), /* Descriptor is owned by NIC */
 335         RingEnd         = (1 << 30), /* End of descriptor ring */
 336         FirstFrag       = (1 << 29), /* First segment of a packet */
 337         LastFrag        = (1 << 28), /* Final segment of a packet */
 338
 339         /* Tx private */
 340         LargeSend       = (1 << 27), /* TCP Large Send Offload (TSO) */
 341         MSSShift        = 16,        /* MSS value position */
 342         MSSMask         = 0xfff,     /* MSS value + LargeSend bit: 12 bits */
 343         IPCS            = (1 << 18), /* Calculate IP checksum */
 344         UDPCS           = (1 << 17), /* Calculate UDP/IP checksum */
 345         TCPCS           = (1 << 16), /* Calculate TCP/IP checksum */
 346         TxVlanTag       = (1 << 17), /* Add VLAN tag */
 347
 348         /* Rx private */
 349         PID1            = (1 << 18), /* Protocol ID bit 1/2 */
 350         PID0            = (1 << 17), /* Protocol ID bit 2/2 */
 351
 352 #define RxProtoUDP      (PID1)
 353 #define RxProtoTCP      (PID0)
 354 #define RxProtoIP       (PID1 | PID0)
 355 #define RxProtoMask     RxProtoIP
 356
 357         IPFail          = (1 << 16), /* IP checksum failed */
 358         UDPFail         = (1 << 15), /* UDP/IP checksum failed */
 359         TCPFail         = (1 << 14), /* TCP/IP checksum failed */
 360         RxVlanTag       = (1 << 16), /* VLAN tag available */
 361 };
 362
 363 #define RsvdMask        0x3fffc000
 364
 365 struct TxDesc {
 366         __le32 opts1;
 367         __le32 opts2;
 368         __le64 addr;
 369 };
 370
 371 struct RxDesc {
 372         __le32 opts1;
 373         __le32 opts2;
 374         __le64 addr;
 375 };
 376
 377 struct ring_info {
 378         struct sk_buff  *skb;
 379         u32             len;
 380         u8              __pad[sizeof(void *) - sizeof(u32)];
 381 };
 382
 383 struct rtl8169_private {
 384         void __iomem *mmio_addr;        /* memory map physical address */
 385         struct pci_dev *pci_dev;        /* Index of PCI device */
 386         struct net_device *dev;
 387         struct net_device_stats stats;  /* statistics of net device */
 388         spinlock_t lock;                /* spin lock flag */
 389         u32 msg_enable;
 390         int chipset;
 391         int mac_version;
 392         int phy_version;
 393         u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
 394         u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
 395         u32 dirty_rx;
 396         u32 dirty_tx;
 397         struct TxDesc *TxDescArray;     /* 256-aligned Tx descriptor ring */
 398         struct RxDesc *RxDescArray;     /* 256-aligned Rx descriptor ring */
 399         dma_addr_t TxPhyAddr;
 400         dma_addr_t RxPhyAddr;
 401         struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
 402         struct ring_info tx_skb[NUM_TX_DESC];   /* Tx data buffers */
 403         unsigned align;
 404         unsigned rx_buf_sz;
 405         struct timer_list timer;
 406         u16 cp_cmd;
 407         u16 intr_event;
 408         u16 napi_event;
 409         u16 intr_mask;
 410         int phy_auto_nego_reg;
 411         int phy_1000_ctrl_reg;
 412 #ifdef CONFIG_R8169_VLAN
 413         struct vlan_group *vlgrp;
 414 #endif
 415         int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
 416         void (*get_settings)(struct net_device *, struct ethtool_cmd *);
 417         void (*phy_reset_enable)(void __iomem *);
 418         void (*hw_start)(struct net_device *);
 419         unsigned int (*phy_reset_pending)(void __iomem *);
 420         unsigned int (*link_ok)(void __iomem *);
 421         struct delayed_work task;
 422         unsigned wol_enabled : 1;
 423 };
 424
 425 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
 426 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
 427 module_param(rx_copybreak, int, 0);
 428 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
 429 module_param(use_dac, int, 0);
 430 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
 431 module_param_named(debug, debug.msg_enable, int, 0);
 432 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
 433 MODULE_LICENSE("GPL");
 434 MODULE_VERSION(RTL8169_VERSION);
 435
 436 static int rtl8169_open(struct net_device *dev);
 437 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
 438 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
 439 static int rtl8169_init_ring(struct net_device *dev);
 440 static void rtl_hw_start(struct net_device *dev);
 441 static int rtl8169_close(struct net_device *dev);
 442 static void rtl_set_rx_mode(struct net_device *dev);
 443 static void rtl8169_tx_timeout(struct net_device *dev);
 444 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
 445 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
 446                                 void __iomem *);
 447 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
 448 static void rtl8169_down(struct net_device *dev);
 449 static void rtl8169_rx_clear(struct rtl8169_private *tp);
 450
 451 #ifdef CONFIG_R8169_NAPI
 452 static int rtl8169_poll(struct net_device *dev, int *budget);
 453 #endif
 454
 455 static const unsigned int rtl8169_rx_config =
 456         (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
 457
 458 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
 459 {
 460         int i;
 461
 462         RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0xFF) << 16 | value);
 463
 464         for (i = 20; i > 0; i--) {
 465                 /*
 466                  * Check if the RTL8169 has completed writing to the specified
 467                  * MII register.
 468                  */
 469                 if (!(RTL_R32(PHYAR) & 0x80000000))
 470                         break;
 471                 udelay(25);
 472         }
 473 }
 474
 475 static int mdio_read(void __iomem *ioaddr, int reg_addr)
 476 {
 477         int i, value = -1;
 478
 479         RTL_W32(PHYAR, 0x0 | (reg_addr & 0xFF) << 16);
 480
 481         for (i = 20; i > 0; i--) {
 482                 /*
 483                  * Check if the RTL8169 has completed retrieving data from
 484                  * the specified MII register.
 485                  */
 486                 if (RTL_R32(PHYAR) & 0x80000000) {
 487                         value = (int) (RTL_R32(PHYAR) & 0xFFFF);
 488                         break;
 489                 }
 490                 udelay(25);
 491         }
 492         return value;
 493 }
 494
 495 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
 496 {
 497         RTL_W16(IntrMask, 0x0000);
 498
 499         RTL_W16(IntrStatus, 0xffff);
 500 }
 501
 502 static void rtl8169_asic_down(void __iomem *ioaddr)
 503 {
 504         RTL_W8(ChipCmd, 0x00);
 505         rtl8169_irq_mask_and_ack(ioaddr);
 506         RTL_R16(CPlusCmd);
 507 }
 508
 509 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
 510 {
 511         return RTL_R32(TBICSR) & TBIReset;
 512 }
 513
 514 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
 515 {
 516         return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
 517 }
 518
 519 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
 520 {
 521         return RTL_R32(TBICSR) & TBILinkOk;
 522 }
 523
 524 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
 525 {
 526         return RTL_R8(PHYstatus) & LinkStatus;
 527 }
 528
 529 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
 530 {
 531         RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
 532 }
 533
 534 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
 535 {
 536         unsigned int val;
 537
 538         val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
 539         mdio_write(ioaddr, MII_BMCR, val & 0xffff);
 540 }
 541
 542 static void rtl8169_check_link_status(struct net_device *dev,
 543                                       struct rtl8169_private *tp,
 544                                       void __iomem *ioaddr)
 545 {
 546         unsigned long flags;
 547
 548         spin_lock_irqsave(&tp->lock, flags);
 549         if (tp->link_ok(ioaddr)) {
 550                 netif_carrier_on(dev);
 551                 if (netif_msg_ifup(tp))
 552                         printk(KERN_INFO PFX "%s: link up\n", dev->name);
 553         } else {
 554                 if (netif_msg_ifdown(tp))
 555                         printk(KERN_INFO PFX "%s: link down\n", dev->name);
 556                 netif_carrier_off(dev);
 557         }
 558         spin_unlock_irqrestore(&tp->lock, flags);
 559 }
 560
 561 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 562 {
 563         struct rtl8169_private *tp = netdev_priv(dev);
 564         void __iomem *ioaddr = tp->mmio_addr;
 565         u8 options;
 566
 567         wol->wolopts = 0;
 568
 569 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
 570         wol->supported = WAKE_ANY;
 571
 572         spin_lock_irq(&tp->lock);
 573
 574         options = RTL_R8(Config1);
 575         if (!(options & PMEnable))
 576                 goto out_unlock;
 577
 578         options = RTL_R8(Config3);
 579         if (options & LinkUp)
 580                 wol->wolopts |= WAKE_PHY;
 581         if (options & MagicPacket)
 582                 wol->wolopts |= WAKE_MAGIC;
 583
 584         options = RTL_R8(Config5);
 585         if (options & UWF)
 586                 wol->wolopts |= WAKE_UCAST;
 587         if (options & BWF)
 588                 wol->wolopts |= WAKE_BCAST;
 589         if (options & MWF)
 590                 wol->wolopts |= WAKE_MCAST;
 591
 592 out_unlock:
 593         spin_unlock_irq(&tp->lock);
 594 }
 595
 596 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 597 {
 598         struct rtl8169_private *tp = netdev_priv(dev);
 599         void __iomem *ioaddr = tp->mmio_addr;
 600         unsigned int i;
 601         static struct {
 602                 u32 opt;
 603                 u16 reg;
 604                 u8  mask;
 605         } cfg[] = {
 606                 { WAKE_ANY,   Config1, PMEnable },
 607                 { WAKE_PHY,   Config3, LinkUp },
 608                 { WAKE_MAGIC, Config3, MagicPacket },
 609                 { WAKE_UCAST, Config5, UWF },
 610                 { WAKE_BCAST, Config5, BWF },
 611                 { WAKE_MCAST, Config5, MWF },
 612                 { WAKE_ANY,   Config5, LanWake }
 613         };
 614
 615         spin_lock_irq(&tp->lock);
 616
 617         RTL_W8(Cfg9346, Cfg9346_Unlock);
 618
 619         for (i = 0; i < ARRAY_SIZE(cfg); i++) {
 620                 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
 621                 if (wol->wolopts & cfg[i].opt)
 622                         options |= cfg[i].mask;
 623                 RTL_W8(cfg[i].reg, options);
 624         }
 625
 626         RTL_W8(Cfg9346, Cfg9346_Lock);
 627
 628         tp->wol_enabled = (wol->wolopts) ? 1 : 0;
 629
 630         spin_unlock_irq(&tp->lock);
 631
 632         return 0;
 633 }
 634
 635 static void rtl8169_get_drvinfo(struct net_device *dev,
 636                                 struct ethtool_drvinfo *info)
 637 {
 638         struct rtl8169_private *tp = netdev_priv(dev);
 639
 640         strcpy(info->driver, MODULENAME);
 641         strcpy(info->version, RTL8169_VERSION);
 642         strcpy(info->bus_info, pci_name(tp->pci_dev));
 643 }
 644
 645 static int rtl8169_get_regs_len(struct net_device *dev)
 646 {
 647         return R8169_REGS_SIZE;
 648 }
 649
 650 static int rtl8169_set_speed_tbi(struct net_device *dev,
 651                                  u8 autoneg, u16 speed, u8 duplex)
 652 {
 653         struct rtl8169_private *tp = netdev_priv(dev);
 654         void __iomem *ioaddr = tp->mmio_addr;
 655         int ret = 0;
 656         u32 reg;
 657
 658         reg = RTL_R32(TBICSR);
 659         if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
 660             (duplex == DUPLEX_FULL)) {
 661                 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
 662         } else if (autoneg == AUTONEG_ENABLE)
 663                 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
 664         else {
 665                 if (netif_msg_link(tp)) {
 666                         printk(KERN_WARNING "%s: "
 667                                "incorrect speed setting refused in TBI mode\n",
 668                                dev->name);
 669                 }
 670                 ret = -EOPNOTSUPP;
 671         }
 672
 673         return ret;
 674 }
 675
 676 static int rtl8169_set_speed_xmii(struct net_device *dev,
 677                                   u8 autoneg, u16 speed, u8 duplex)
 678 {
 679         struct rtl8169_private *tp = netdev_priv(dev);
 680         void __iomem *ioaddr = tp->mmio_addr;
 681         int auto_nego, giga_ctrl;
 682
 683         auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
 684         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
 685                        ADVERTISE_100HALF | ADVERTISE_100FULL);
 686         giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
 687         giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 688
 689         if (autoneg == AUTONEG_ENABLE) {
 690                 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
 691                               ADVERTISE_100HALF | ADVERTISE_100FULL);
 692                 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
 693         } else {
 694                 if (speed == SPEED_10)
 695                         auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
 696                 else if (speed == SPEED_100)
 697                         auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
 698                 else if (speed == SPEED_1000)
 699                         giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
 700
 701                 if (duplex == DUPLEX_HALF)
 702                         auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
 703
 704                 if (duplex == DUPLEX_FULL)
 705                         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
 706
 707                 /* This tweak comes straight from Realtek's driver. */
 708                 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
 709                     (tp->mac_version == RTL_GIGA_MAC_VER_13)) {
 710                         auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
 711                 }
 712         }
 713
 714         /* The 8100e/8101e do Fast Ethernet only. */
 715         if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
 716             (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
 717             (tp->mac_version == RTL_GIGA_MAC_VER_15)) {
 718                 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
 719                     netif_msg_link(tp)) {
 720                         printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
 721                                dev->name);
 722                 }
 723                 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
 724         }
 725
 726         auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
 727
 728         tp->phy_auto_nego_reg = auto_nego;
 729         tp->phy_1000_ctrl_reg = giga_ctrl;
 730
 731         mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
 732         mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
 733         mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
 734         return 0;
 735 }
 736
 737 static int rtl8169_set_speed(struct net_device *dev,
 738                              u8 autoneg, u16 speed, u8 duplex)
 739 {
 740         struct rtl8169_private *tp = netdev_priv(dev);
 741         int ret;
 742
 743         ret = tp->set_speed(dev, autoneg, speed, duplex);
 744
 745         if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
 746                 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
 747
 748         return ret;
 749 }
 750
 751 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 752 {
 753         struct rtl8169_private *tp = netdev_priv(dev);
 754         unsigned long flags;
 755         int ret;
 756
 757         spin_lock_irqsave(&tp->lock, flags);
 758         ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
 759         spin_unlock_irqrestore(&tp->lock, flags);
 760
 761         return ret;
 762 }
 763
 764 static u32 rtl8169_get_rx_csum(struct net_device *dev)
 765 {
 766         struct rtl8169_private *tp = netdev_priv(dev);
 767
 768         return tp->cp_cmd & RxChkSum;
 769 }
 770
 771 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
 772 {
 773         struct rtl8169_private *tp = netdev_priv(dev);
 774         void __iomem *ioaddr = tp->mmio_addr;
 775         unsigned long flags;
 776
 777         spin_lock_irqsave(&tp->lock, flags);
 778
 779         if (data)
 780                 tp->cp_cmd |= RxChkSum;
 781         else
 782                 tp->cp_cmd &= ~RxChkSum;
 783
 784         RTL_W16(CPlusCmd, tp->cp_cmd);
 785         RTL_R16(CPlusCmd);
 786
 787         spin_unlock_irqrestore(&tp->lock, flags);
 788
 789         return 0;
 790 }
 791
 792 #ifdef CONFIG_R8169_VLAN
 793
 794 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
 795                                       struct sk_buff *skb)
 796 {
 797         return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
 798                 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
 799 }
 800
 801 static void rtl8169_vlan_rx_register(struct net_device *dev,
 802                                      struct vlan_group *grp)
 803 {
 804         struct rtl8169_private *tp = netdev_priv(dev);
 805         void __iomem *ioaddr = tp->mmio_addr;
 806         unsigned long flags;
 807
 808         spin_lock_irqsave(&tp->lock, flags);
 809         tp->vlgrp = grp;
 810         if (tp->vlgrp)
 811                 tp->cp_cmd |= RxVlan;
 812         else
 813                 tp->cp_cmd &= ~RxVlan;
 814         RTL_W16(CPlusCmd, tp->cp_cmd);
 815         RTL_R16(CPlusCmd);
 816         spin_unlock_irqrestore(&tp->lock, flags);
 817 }
 818
 819 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
 820                                struct sk_buff *skb)
 821 {
 822         u32 opts2 = le32_to_cpu(desc->opts2);
 823         int ret;
 824
 825         if (tp->vlgrp && (opts2 & RxVlanTag)) {
 826                 rtl8169_rx_hwaccel_skb(skb, tp->vlgrp, swab16(opts2 & 0xffff));
 827                 ret = 0;
 828         } else
 829                 ret = -1;
 830         desc->opts2 = 0;
 831         return ret;
 832 }
 833
 834 #else /* !CONFIG_R8169_VLAN */
 835
 836 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
 837                                       struct sk_buff *skb)
 838 {
 839         return 0;
 840 }
 841
 842 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
 843                                struct sk_buff *skb)
 844 {
 845         return -1;
 846 }
 847
 848 #endif
 849
 850 static void rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
 851 {
 852         struct rtl8169_private *tp = netdev_priv(dev);
 853         void __iomem *ioaddr = tp->mmio_addr;
 854         u32 status;
 855
 856         cmd->supported =
 857                 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
 858         cmd->port = PORT_FIBRE;
 859         cmd->transceiver = XCVR_INTERNAL;
 860
 861         status = RTL_R32(TBICSR);
 862         cmd->advertising = (status & TBINwEnable) ?  ADVERTISED_Autoneg : 0;
 863         cmd->autoneg = !!(status & TBINwEnable);
 864
 865         cmd->speed = SPEED_1000;
 866         cmd->duplex = DUPLEX_FULL; /* Always set */
 867 }
 868
 869 static void rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
 870 {
 871         struct rtl8169_private *tp = netdev_priv(dev);
 872         void __iomem *ioaddr = tp->mmio_addr;
 873         u8 status;
 874
 875         cmd->supported = SUPPORTED_10baseT_Half |
 876                          SUPPORTED_10baseT_Full |
 877                          SUPPORTED_100baseT_Half |
 878                          SUPPORTED_100baseT_Full |
 879                          SUPPORTED_1000baseT_Full |
 880                          SUPPORTED_Autoneg |
 881                          SUPPORTED_TP;
 882
 883         cmd->autoneg = 1;
 884         cmd->advertising = ADVERTISED_TP | ADVERTISED_Autoneg;
 885
 886         if (tp->phy_auto_nego_reg & ADVERTISE_10HALF)
 887                 cmd->advertising |= ADVERTISED_10baseT_Half;
 888         if (tp->phy_auto_nego_reg & ADVERTISE_10FULL)
 889                 cmd->advertising |= ADVERTISED_10baseT_Full;
 890         if (tp->phy_auto_nego_reg & ADVERTISE_100HALF)
 891                 cmd->advertising |= ADVERTISED_100baseT_Half;
 892         if (tp->phy_auto_nego_reg & ADVERTISE_100FULL)
 893                 cmd->advertising |= ADVERTISED_100baseT_Full;
 894         if (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL)
 895                 cmd->advertising |= ADVERTISED_1000baseT_Full;
 896
 897         status = RTL_R8(PHYstatus);
 898
 899         if (status & _1000bpsF)
 900                 cmd->speed = SPEED_1000;
 901         else if (status & _100bps)
 902                 cmd->speed = SPEED_100;
 903         else if (status & _10bps)
 904                 cmd->speed = SPEED_10;
 905
 906         if (status & TxFlowCtrl)
 907                 cmd->advertising |= ADVERTISED_Asym_Pause;
 908         if (status & RxFlowCtrl)
 909                 cmd->advertising |= ADVERTISED_Pause;
 910
 911         cmd->duplex = ((status & _1000bpsF) || (status & FullDup)) ?
 912                       DUPLEX_FULL : DUPLEX_HALF;
 913 }
 914
 915 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
 916 {
 917         struct rtl8169_private *tp = netdev_priv(dev);
 918         unsigned long flags;
 919
 920         spin_lock_irqsave(&tp->lock, flags);
 921
 922         tp->get_settings(dev, cmd);
 923
 924         spin_unlock_irqrestore(&tp->lock, flags);
 925         return 0;
 926 }
 927
 928 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
 929                              void *p)
 930 {
 931         struct rtl8169_private *tp = netdev_priv(dev);
 932         unsigned long flags;
 933
 934         if (regs->len > R8169_REGS_SIZE)
 935                 regs->len = R8169_REGS_SIZE;
 936
 937         spin_lock_irqsave(&tp->lock, flags);
 938         memcpy_fromio(p, tp->mmio_addr, regs->len);
 939         spin_unlock_irqrestore(&tp->lock, flags);
 940 }
 941
 942 static u32 rtl8169_get_msglevel(struct net_device *dev)
 943 {
 944         struct rtl8169_private *tp = netdev_priv(dev);
 945
 946         return tp->msg_enable;
 947 }
 948
 949 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
 950 {
 951         struct rtl8169_private *tp = netdev_priv(dev);
 952
 953         tp->msg_enable = value;
 954 }
 955
 956 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
 957         "tx_packets",
 958         "rx_packets",
 959         "tx_errors",
 960         "rx_errors",
 961         "rx_missed",
 962         "align_errors",
 963         "tx_single_collisions",
 964         "tx_multi_collisions",
 965         "unicast",
 966         "broadcast",
 967         "multicast",
 968         "tx_aborted",
 969         "tx_underrun",
 970 };
 971
 972 struct rtl8169_counters {
 973         u64     tx_packets;
 974         u64     rx_packets;
 975         u64     tx_errors;
 976         u32     rx_errors;
 977         u16     rx_missed;
 978         u16     align_errors;
 979         u32     tx_one_collision;
 980         u32     tx_multi_collision;
 981         u64     rx_unicast;
 982         u64     rx_broadcast;
 983         u32     rx_multicast;
 984         u16     tx_aborted;
 985         u16     tx_underun;
 986 };
 987
 988 static int rtl8169_get_stats_count(struct net_device *dev)
 989 {
 990         return ARRAY_SIZE(rtl8169_gstrings);
 991 }
 992
 993 static void rtl8169_get_ethtool_stats(struct net_device *dev,
 994                                       struct ethtool_stats *stats, u64 *data)
 995 {
 996         struct rtl8169_private *tp = netdev_priv(dev);
 997         void __iomem *ioaddr = tp->mmio_addr;
 998         struct rtl8169_counters *counters;
 999         dma_addr_t paddr;
1000         u32 cmd;
1001
1002         ASSERT_RTNL();
1003
1004         counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1005         if (!counters)
1006                 return;
1007
1008         RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1009         cmd = (u64)paddr & DMA_32BIT_MASK;
1010         RTL_W32(CounterAddrLow, cmd);
1011         RTL_W32(CounterAddrLow, cmd | CounterDump);
1012
1013         while (RTL_R32(CounterAddrLow) & CounterDump) {
1014                 if (msleep_interruptible(1))
1015                         break;
1016         }
1017
1018         RTL_W32(CounterAddrLow, 0);
1019         RTL_W32(CounterAddrHigh, 0);
1020
1021         data[0] = le64_to_cpu(counters->tx_packets);
1022         data[1] = le64_to_cpu(counters->rx_packets);
1023         data[2] = le64_to_cpu(counters->tx_errors);
1024         data[3] = le32_to_cpu(counters->rx_errors);
1025         data[4] = le16_to_cpu(counters->rx_missed);
1026         data[5] = le16_to_cpu(counters->align_errors);
1027         data[6] = le32_to_cpu(counters->tx_one_collision);
1028         data[7] = le32_to_cpu(counters->tx_multi_collision);
1029         data[8] = le64_to_cpu(counters->rx_unicast);
1030         data[9] = le64_to_cpu(counters->rx_broadcast);
1031         data[10] = le32_to_cpu(counters->rx_multicast);
1032         data[11] = le16_to_cpu(counters->tx_aborted);
1033         data[12] = le16_to_cpu(counters->tx_underun);
1034
1035         pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1036 }
1037
1038 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1039 {
1040         switch(stringset) {
1041         case ETH_SS_STATS:
1042                 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1043                 break;
1044         }
1045 }
1046
1047 static const struct ethtool_ops rtl8169_ethtool_ops = {
1048         .get_drvinfo            = rtl8169_get_drvinfo,
1049         .get_regs_len           = rtl8169_get_regs_len,
1050         .get_link               = ethtool_op_get_link,
1051         .get_settings           = rtl8169_get_settings,
1052         .set_settings           = rtl8169_set_settings,
1053         .get_msglevel           = rtl8169_get_msglevel,
1054         .set_msglevel           = rtl8169_set_msglevel,
1055         .get_rx_csum            = rtl8169_get_rx_csum,
1056         .set_rx_csum            = rtl8169_set_rx_csum,
1057         .get_tx_csum            = ethtool_op_get_tx_csum,
1058         .set_tx_csum            = ethtool_op_set_tx_csum,
1059         .get_sg                 = ethtool_op_get_sg,
1060         .set_sg                 = ethtool_op_set_sg,
1061         .get_tso                = ethtool_op_get_tso,
1062         .set_tso                = ethtool_op_set_tso,
1063         .get_regs               = rtl8169_get_regs,
1064         .get_wol                = rtl8169_get_wol,
1065         .set_wol                = rtl8169_set_wol,
1066         .get_strings            = rtl8169_get_strings,
1067         .get_stats_count        = rtl8169_get_stats_count,
1068         .get_ethtool_stats      = rtl8169_get_ethtool_stats,
1069         .get_perm_addr          = ethtool_op_get_perm_addr,
1070 };
1071
1072 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1073                                        int bitnum, int bitval)
1074 {
1075         int val;
1076
1077         val = mdio_read(ioaddr, reg);
1078         val = (bitval == 1) ?
1079                 val | (bitval << bitnum) :  val & ~(0x0001 << bitnum);
1080         mdio_write(ioaddr, reg, val & 0xffff);
1081 }
1082
1083 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1084                                     void __iomem *ioaddr)
1085 {
1086         /*
1087          * The driver currently handles the 8168Bf and the 8168Be identically
1088          * but they can be identified more specifically through the test below
1089          * if needed:
1090          *
1091          * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1092          *
1093          * Same thing for the 8101Eb and the 8101Ec:
1094          *
1095          * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1096          */
1097         const struct {
1098                 u32 mask;
1099                 int mac_version;
1100         } mac_info[] = {
1101                 { 0x38800000,   RTL_GIGA_MAC_VER_15 },
1102                 { 0x38000000,   RTL_GIGA_MAC_VER_12 },
1103                 { 0x34000000,   RTL_GIGA_MAC_VER_13 },
1104                 { 0x30800000,   RTL_GIGA_MAC_VER_14 },
1105                 { 0x30000000,   RTL_GIGA_MAC_VER_11 },
1106                 { 0x98000000,   RTL_GIGA_MAC_VER_06 },
1107                 { 0x18000000,   RTL_GIGA_MAC_VER_05 },
1108                 { 0x10000000,   RTL_GIGA_MAC_VER_04 },
1109                 { 0x04000000,   RTL_GIGA_MAC_VER_03 },
1110                 { 0x00800000,   RTL_GIGA_MAC_VER_02 },
1111                 { 0x00000000,   RTL_GIGA_MAC_VER_01 }   /* Catch-all */
1112         }, *p = mac_info;
1113         u32 reg;
1114
1115         reg = RTL_R32(TxConfig) & 0xfc800000;
1116         while ((reg & p->mask) != p->mask)
1117                 p++;
1118         tp->mac_version = p->mac_version;
1119 }
1120
1121 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1122 {
1123         dprintk("mac_version = 0x%02x\n", tp->mac_version);
1124 }
1125
1126 static void rtl8169_get_phy_version(struct rtl8169_private *tp,
1127                                     void __iomem *ioaddr)
1128 {
1129         const struct {
1130                 u16 mask;
1131                 u16 set;
1132                 int phy_version;
1133         } phy_info[] = {
1134                 { 0x000f, 0x0002, RTL_GIGA_PHY_VER_G },
1135                 { 0x000f, 0x0001, RTL_GIGA_PHY_VER_F },
1136                 { 0x000f, 0x0000, RTL_GIGA_PHY_VER_E },
1137                 { 0x0000, 0x0000, RTL_GIGA_PHY_VER_D } /* Catch-all */
1138         }, *p = phy_info;
1139         u16 reg;
1140
1141         reg = mdio_read(ioaddr, MII_PHYSID2) & 0xffff;
1142         while ((reg & p->mask) != p->set)
1143                 p++;
1144         tp->phy_version = p->phy_version;
1145 }
1146
1147 static void rtl8169_print_phy_version(struct rtl8169_private *tp)
1148 {
1149         struct {
1150                 int version;
1151                 char *msg;
1152                 u32 reg;
1153         } phy_print[] = {
1154                 { RTL_GIGA_PHY_VER_G, "RTL_GIGA_PHY_VER_G", 0x0002 },
1155                 { RTL_GIGA_PHY_VER_F, "RTL_GIGA_PHY_VER_F", 0x0001 },
1156                 { RTL_GIGA_PHY_VER_E, "RTL_GIGA_PHY_VER_E", 0x0000 },
1157                 { RTL_GIGA_PHY_VER_D, "RTL_GIGA_PHY_VER_D", 0x0000 },
1158                 { 0, NULL, 0x0000 }
1159         }, *p;
1160
1161         for (p = phy_print; p->msg; p++) {
1162                 if (tp->phy_version == p->version) {
1163                         dprintk("phy_version == %s (%04x)\n", p->msg, p->reg);
1164                         return;
1165                 }
1166         }
1167         dprintk("phy_version == Unknown\n");
1168 }
1169
1170 static void rtl8169_hw_phy_config(struct net_device *dev)
1171 {
1172         struct rtl8169_private *tp = netdev_priv(dev);
1173         void __iomem *ioaddr = tp->mmio_addr;
1174         struct {
1175                 u16 regs[5]; /* Beware of bit-sign propagation */
1176         } phy_magic[5] = { {
1177                 { 0x0000,       //w 4 15 12 0
1178                   0x00a1,       //w 3 15 0 00a1
1179                   0x0008,       //w 2 15 0 0008
1180                   0x1020,       //w 1 15 0 1020
1181                   0x1000 } },{  //w 0 15 0 1000
1182                 { 0x7000,       //w 4 15 12 7
1183                   0xff41,       //w 3 15 0 ff41
1184                   0xde60,       //w 2 15 0 de60
1185                   0x0140,       //w 1 15 0 0140
1186                   0x0077 } },{  //w 0 15 0 0077
1187                 { 0xa000,       //w 4 15 12 a
1188                   0xdf01,       //w 3 15 0 df01
1189                   0xdf20,       //w 2 15 0 df20
1190                   0xff95,       //w 1 15 0 ff95
1191                   0xfa00 } },{  //w 0 15 0 fa00
1192                 { 0xb000,       //w 4 15 12 b
1193                   0xff41,       //w 3 15 0 ff41
1194                   0xde20,       //w 2 15 0 de20
1195                   0x0140,       //w 1 15 0 0140
1196                   0x00bb } },{  //w 0 15 0 00bb
1197                 { 0xf000,       //w 4 15 12 f
1198                   0xdf01,       //w 3 15 0 df01
1199                   0xdf20,       //w 2 15 0 df20
1200                   0xff95,       //w 1 15 0 ff95
1201                   0xbf00 }      //w 0 15 0 bf00
1202                 }
1203         }, *p = phy_magic;
1204         unsigned int i;
1205
1206         rtl8169_print_mac_version(tp);
1207         rtl8169_print_phy_version(tp);
1208
1209         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1210                 return;
1211         if (tp->phy_version >= RTL_GIGA_PHY_VER_H)
1212                 return;
1213
1214         dprintk("MAC version != 0 && PHY version == 0 or 1\n");
1215         dprintk("Do final_reg2.cfg\n");
1216
1217         /* Shazam ! */
1218
1219         if (tp->mac_version == RTL_GIGA_MAC_VER_04) {
1220                 mdio_write(ioaddr, 31, 0x0002);
1221                 mdio_write(ioaddr,  1, 0x90d0);
1222                 mdio_write(ioaddr, 31, 0x0000);
1223                 return;
1224         }
1225
1226         /* phy config for RTL8169s mac_version C chip */
1227         mdio_write(ioaddr, 31, 0x0001);                 //w 31 2 0 1
1228         mdio_write(ioaddr, 21, 0x1000);                 //w 21 15 0 1000
1229         mdio_write(ioaddr, 24, 0x65c7);                 //w 24 15 0 65c7
1230         rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0);   //w 4 11 11 0
1231
1232         for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1233                 int val, pos = 4;
1234
1235                 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1236                 mdio_write(ioaddr, pos, val);
1237                 while (--pos >= 0)
1238                         mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1239                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1240                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1241         }
1242         mdio_write(ioaddr, 31, 0x0000); //w 31 2 0 0
1243 }
1244
1245 static void rtl8169_phy_timer(unsigned long __opaque)
1246 {
1247         struct net_device *dev = (struct net_device *)__opaque;
1248         struct rtl8169_private *tp = netdev_priv(dev);
1249         struct timer_list *timer = &tp->timer;
1250         void __iomem *ioaddr = tp->mmio_addr;
1251         unsigned long timeout = RTL8169_PHY_TIMEOUT;
1252
1253         assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1254         assert(tp->phy_version < RTL_GIGA_PHY_VER_H);
1255
1256         if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1257                 return;
1258
1259         spin_lock_irq(&tp->lock);
1260
1261         if (tp->phy_reset_pending(ioaddr)) {
1262                 /*
1263                  * A busy loop could burn quite a few cycles on nowadays CPU.
1264                  * Let's delay the execution of the timer for a few ticks.
1265                  */
1266                 timeout = HZ/10;
1267                 goto out_mod_timer;
1268         }
1269
1270         if (tp->link_ok(ioaddr))
1271                 goto out_unlock;
1272
1273         if (netif_msg_link(tp))
1274                 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1275
1276         tp->phy_reset_enable(ioaddr);
1277
1278 out_mod_timer:
1279         mod_timer(timer, jiffies + timeout);
1280 out_unlock:
1281         spin_unlock_irq(&tp->lock);
1282 }
1283
1284 static inline void rtl8169_delete_timer(struct net_device *dev)
1285 {
1286         struct rtl8169_private *tp = netdev_priv(dev);
1287         struct timer_list *timer = &tp->timer;
1288
1289         if ((tp->mac_version <= RTL_GIGA_MAC_VER_01) ||
1290             (tp->phy_version >= RTL_GIGA_PHY_VER_H))
1291                 return;
1292
1293         del_timer_sync(timer);
1294 }
1295
1296 static inline void rtl8169_request_timer(struct net_device *dev)
1297 {
1298         struct rtl8169_private *tp = netdev_priv(dev);
1299         struct timer_list *timer = &tp->timer;
1300
1301         if ((tp->mac_version <= RTL_GIGA_MAC_VER_01) ||
1302             (tp->phy_version >= RTL_GIGA_PHY_VER_H))
1303                 return;
1304
1305         mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1306 }
1307
1308 #ifdef CONFIG_NET_POLL_CONTROLLER
1309 /*
1310  * Polling 'interrupt' - used by things like netconsole to send skbs
1311  * without having to re-enable interrupts. It's not called while
1312  * the interrupt routine is executing.
1313  */
1314 static void rtl8169_netpoll(struct net_device *dev)
1315 {
1316         struct rtl8169_private *tp = netdev_priv(dev);
1317         struct pci_dev *pdev = tp->pci_dev;
1318
1319         disable_irq(pdev->irq);
1320         rtl8169_interrupt(pdev->irq, dev);
1321         enable_irq(pdev->irq);
1322 }
1323 #endif
1324
1325 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1326                                   void __iomem *ioaddr)
1327 {
1328         iounmap(ioaddr);
1329         pci_release_regions(pdev);
1330         pci_disable_device(pdev);
1331         free_netdev(dev);
1332 }
1333
1334 static void rtl8169_phy_reset(struct net_device *dev,
1335                               struct rtl8169_private *tp)
1336 {
1337         void __iomem *ioaddr = tp->mmio_addr;
1338         unsigned int i;
1339
1340         tp->phy_reset_enable(ioaddr);
1341         for (i = 0; i < 100; i++) {
1342                 if (!tp->phy_reset_pending(ioaddr))
1343                         return;
1344                 msleep(1);
1345         }
1346         if (netif_msg_link(tp))
1347                 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1348 }
1349
1350 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1351 {
1352         void __iomem *ioaddr = tp->mmio_addr;
1353
1354         rtl8169_hw_phy_config(dev);
1355
1356         dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1357         RTL_W8(0x82, 0x01);
1358
1359         pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1360
1361         if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1362                 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1363
1364         if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1365                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1366                 RTL_W8(0x82, 0x01);
1367                 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1368                 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1369         }
1370
1371         rtl8169_phy_reset(dev, tp);
1372
1373         /*
1374          * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1375          * only 8101. Don't panic.
1376          */
1377         rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1378
1379         if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1380                 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1381 }
1382
1383 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1384 {
1385         void __iomem *ioaddr = tp->mmio_addr;
1386         u32 high;
1387         u32 low;
1388
1389         low  = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1390         high = addr[4] | (addr[5] << 8);
1391
1392         spin_lock_irq(&tp->lock);
1393
1394         RTL_W8(Cfg9346, Cfg9346_Unlock);
1395         RTL_W32(MAC0, low);
1396         RTL_W32(MAC4, high);
1397         RTL_W8(Cfg9346, Cfg9346_Lock);
1398
1399         spin_unlock_irq(&tp->lock);
1400 }
1401
1402 static int rtl_set_mac_address(struct net_device *dev, void *p)
1403 {
1404         struct rtl8169_private *tp = netdev_priv(dev);
1405         struct sockaddr *addr = p;
1406
1407         if (!is_valid_ether_addr(addr->sa_data))
1408                 return -EADDRNOTAVAIL;
1409
1410         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1411
1412         rtl_rar_set(tp, dev->dev_addr);
1413
1414         return 0;
1415 }
1416
1417 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1418 {
1419         struct rtl8169_private *tp = netdev_priv(dev);
1420         struct mii_ioctl_data *data = if_mii(ifr);
1421
1422         if (!netif_running(dev))
1423                 return -ENODEV;
1424
1425         switch (cmd) {
1426         case SIOCGMIIPHY:
1427                 data->phy_id = 32; /* Internal PHY */
1428                 return 0;
1429
1430         case SIOCGMIIREG:
1431                 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1432                 return 0;
1433
1434         case SIOCSMIIREG:
1435                 if (!capable(CAP_NET_ADMIN))
1436                         return -EPERM;
1437                 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1438                 return 0;
1439         }
1440         return -EOPNOTSUPP;
1441 }
1442
1443 static const struct rtl_cfg_info {
1444         void (*hw_start)(struct net_device *);
1445         unsigned int region;
1446         unsigned int align;
1447         u16 intr_event;
1448         u16 napi_event;
1449 } rtl_cfg_infos [] = {
1450         [RTL_CFG_0] = {
1451                 .hw_start       = rtl_hw_start_8169,
1452                 .region         = 1,
1453                 .align          = 0,
1454                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1455                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1456                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow
1457         },
1458         [RTL_CFG_1] = {
1459                 .hw_start       = rtl_hw_start_8168,
1460                 .region         = 2,
1461                 .align          = 8,
1462                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1463                                   TxErr | TxOK | RxOK | RxErr,
1464                 .napi_event     = TxErr | TxOK | RxOK | RxOverflow
1465         },
1466         [RTL_CFG_2] = {
1467                 .hw_start       = rtl_hw_start_8101,
1468                 .region         = 2,
1469                 .align          = 8,
1470                 .intr_event     = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1471                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1472                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow
1473         }
1474 };
1475
1476 static int __devinit
1477 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1478 {
1479         const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
1480         const unsigned int region = cfg->region;
1481         struct rtl8169_private *tp;
1482         struct net_device *dev;
1483         void __iomem *ioaddr;
1484         unsigned int i;
1485         int rc;
1486
1487         if (netif_msg_drv(&debug)) {
1488                 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
1489                        MODULENAME, RTL8169_VERSION);
1490         }
1491
1492         dev = alloc_etherdev(sizeof (*tp));
1493         if (!dev) {
1494                 if (netif_msg_drv(&debug))
1495                         dev_err(&pdev->dev, "unable to alloc new ethernet\n");
1496                 rc = -ENOMEM;
1497                 goto out;
1498         }
1499
1500         SET_MODULE_OWNER(dev);
1501         SET_NETDEV_DEV(dev, &pdev->dev);
1502         tp = netdev_priv(dev);
1503         tp->dev = dev;
1504         tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
1505
1506         /* enable device (incl. PCI PM wakeup and hotplug setup) */
1507         rc = pci_enable_device(pdev);
1508         if (rc < 0) {
1509                 if (netif_msg_probe(tp))
1510                         dev_err(&pdev->dev, "enable failure\n");
1511                 goto err_out_free_dev_1;
1512         }
1513
1514         rc = pci_set_mwi(pdev);
1515         if (rc < 0)
1516                 goto err_out_disable_2;
1517
1518         /* make sure PCI base addr 1 is MMIO */
1519         if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
1520                 if (netif_msg_probe(tp)) {
1521                         dev_err(&pdev->dev,
1522                                 "region #%d not an MMIO resource, aborting\n",
1523                                 region);
1524                 }
1525                 rc = -ENODEV;
1526                 goto err_out_mwi_3;
1527         }
1528
1529         /* check for weird/broken PCI region reporting */
1530         if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
1531                 if (netif_msg_probe(tp)) {
1532                         dev_err(&pdev->dev,
1533                                 "Invalid PCI region size(s), aborting\n");
1534                 }
1535                 rc = -ENODEV;
1536                 goto err_out_mwi_3;
1537         }
1538
1539         rc = pci_request_regions(pdev, MODULENAME);
1540         if (rc < 0) {
1541                 if (netif_msg_probe(tp))
1542                         dev_err(&pdev->dev, "could not request regions.\n");
1543                 goto err_out_mwi_3;
1544         }
1545
1546         tp->cp_cmd = PCIMulRW | RxChkSum;
1547
1548         if ((sizeof(dma_addr_t) > 4) &&
1549             !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
1550                 tp->cp_cmd |= PCIDAC;
1551                 dev->features |= NETIF_F_HIGHDMA;
1552         } else {
1553                 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1554                 if (rc < 0) {
1555                         if (netif_msg_probe(tp)) {
1556                                 dev_err(&pdev->dev,
1557                                         "DMA configuration failed.\n");
1558                         }
1559                         goto err_out_free_res_4;
1560                 }
1561         }
1562
1563         pci_set_master(pdev);
1564
1565         /* ioremap MMIO region */
1566         ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
1567         if (!ioaddr) {
1568                 if (netif_msg_probe(tp))
1569                         dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
1570                 rc = -EIO;
1571                 goto err_out_free_res_4;
1572         }
1573
1574         /* Unneeded ? Don't mess with Mrs. Murphy. */
1575         rtl8169_irq_mask_and_ack(ioaddr);
1576
1577         /* Soft reset the chip. */
1578         RTL_W8(ChipCmd, CmdReset);
1579
1580         /* Check that the chip has finished the reset. */
1581         for (i = 0; i < 100; i++) {
1582                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1583                         break;
1584                 msleep_interruptible(1);
1585         }
1586
1587         /* Identify chip attached to board */
1588         rtl8169_get_mac_version(tp, ioaddr);
1589         rtl8169_get_phy_version(tp, ioaddr);
1590
1591         rtl8169_print_mac_version(tp);
1592         rtl8169_print_phy_version(tp);
1593
1594         for (i = ARRAY_SIZE(rtl_chip_info) - 1; i >= 0; i--) {
1595                 if (tp->mac_version == rtl_chip_info[i].mac_version)
1596                         break;
1597         }
1598         if (i < 0) {
1599                 /* Unknown chip: assume array element #0, original RTL-8169 */
1600                 if (netif_msg_probe(tp)) {
1601                         dev_printk(KERN_DEBUG, &pdev->dev,
1602                                 "unknown chip version, assuming %s\n",
1603                                 rtl_chip_info[0].name);
1604                 }
1605                 i++;
1606         }
1607         tp->chipset = i;
1608
1609         RTL_W8(Cfg9346, Cfg9346_Unlock);
1610         RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
1611         RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
1612         RTL_W8(Cfg9346, Cfg9346_Lock);
1613
1614         if (RTL_R8(PHYstatus) & TBI_Enable) {
1615                 tp->set_speed = rtl8169_set_speed_tbi;
1616                 tp->get_settings = rtl8169_gset_tbi;
1617                 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
1618                 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
1619                 tp->link_ok = rtl8169_tbi_link_ok;
1620
1621                 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
1622         } else {
1623                 tp->set_speed = rtl8169_set_speed_xmii;
1624                 tp->get_settings = rtl8169_gset_xmii;
1625                 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
1626                 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
1627                 tp->link_ok = rtl8169_xmii_link_ok;
1628
1629                 dev->do_ioctl = rtl8169_ioctl;
1630         }
1631
1632         /* Get MAC address.  FIXME: read EEPROM */
1633         for (i = 0; i < MAC_ADDR_LEN; i++)
1634                 dev->dev_addr[i] = RTL_R8(MAC0 + i);
1635         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
1636
1637         dev->open = rtl8169_open;
1638         dev->hard_start_xmit = rtl8169_start_xmit;
1639         dev->get_stats = rtl8169_get_stats;
1640         SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
1641         dev->stop = rtl8169_close;
1642         dev->tx_timeout = rtl8169_tx_timeout;
1643         dev->set_multicast_list = rtl_set_rx_mode;
1644         dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
1645         dev->irq = pdev->irq;
1646         dev->base_addr = (unsigned long) ioaddr;
1647         dev->change_mtu = rtl8169_change_mtu;
1648         dev->set_mac_address = rtl_set_mac_address;
1649
1650 #ifdef CONFIG_R8169_NAPI
1651         dev->poll = rtl8169_poll;
1652         dev->weight = R8169_NAPI_WEIGHT;
1653 #endif
1654
1655 #ifdef CONFIG_R8169_VLAN
1656         dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1657         dev->vlan_rx_register = rtl8169_vlan_rx_register;
1658 #endif
1659
1660 #ifdef CONFIG_NET_POLL_CONTROLLER
1661         dev->poll_controller = rtl8169_netpoll;
1662 #endif
1663
1664         tp->intr_mask = 0xffff;
1665         tp->pci_dev = pdev;
1666         tp->mmio_addr = ioaddr;
1667         tp->align = cfg->align;
1668         tp->hw_start = cfg->hw_start;
1669         tp->intr_event = cfg->intr_event;
1670         tp->napi_event = cfg->napi_event;
1671
1672         init_timer(&tp->timer);
1673         tp->timer.data = (unsigned long) dev;
1674         tp->timer.function = rtl8169_phy_timer;
1675
1676         spin_lock_init(&tp->lock);
1677
1678         rc = register_netdev(dev);
1679         if (rc < 0)
1680                 goto err_out_unmap_5;
1681
1682         pci_set_drvdata(pdev, dev);
1683
1684         if (netif_msg_probe(tp)) {
1685                 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
1686
1687                 printk(KERN_INFO "%s: %s at 0x%lx, "
1688                        "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
1689                        "XID %08x IRQ %d\n",
1690                        dev->name,
1691                        rtl_chip_info[tp->chipset].name,
1692                        dev->base_addr,
1693                        dev->dev_addr[0], dev->dev_addr[1],
1694                        dev->dev_addr[2], dev->dev_addr[3],
1695                        dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
1696         }
1697
1698         rtl8169_init_phy(dev, tp);
1699
1700 out:
1701         return rc;
1702
1703 err_out_unmap_5:
1704         iounmap(ioaddr);
1705 err_out_free_res_4:
1706         pci_release_regions(pdev);
1707 err_out_mwi_3:
1708         pci_clear_mwi(pdev);
1709 err_out_disable_2:
1710         pci_disable_device(pdev);
1711 err_out_free_dev_1:
1712         free_netdev(dev);
1713         goto out;
1714 }
1715
1716 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
1717 {
1718         struct net_device *dev = pci_get_drvdata(pdev);
1719         struct rtl8169_private *tp = netdev_priv(dev);
1720
1721         flush_scheduled_work();
1722
1723         unregister_netdev(dev);
1724         rtl8169_release_board(pdev, dev, tp->mmio_addr);
1725         pci_set_drvdata(pdev, NULL);
1726 }
1727
1728 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
1729                                   struct net_device *dev)
1730 {
1731         unsigned int mtu = dev->mtu;
1732
1733         tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
1734 }
1735
1736 static int rtl8169_open(struct net_device *dev)
1737 {
1738         struct rtl8169_private *tp = netdev_priv(dev);
1739         struct pci_dev *pdev = tp->pci_dev;
1740         int retval = -ENOMEM;
1741
1742
1743         rtl8169_set_rxbufsize(tp, dev);
1744
1745         /*
1746          * Rx and Tx desscriptors needs 256 bytes alignment.
1747          * pci_alloc_consistent provides more.
1748          */
1749         tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
1750                                                &tp->TxPhyAddr);
1751         if (!tp->TxDescArray)
1752                 goto out;
1753
1754         tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
1755                                                &tp->RxPhyAddr);
1756         if (!tp->RxDescArray)
1757                 goto err_free_tx_0;
1758
1759         retval = rtl8169_init_ring(dev);
1760         if (retval < 0)
1761                 goto err_free_rx_1;
1762
1763         INIT_DELAYED_WORK(&tp->task, NULL);
1764
1765         smp_mb();
1766
1767         retval = request_irq(dev->irq, rtl8169_interrupt, IRQF_SHARED,
1768                              dev->name, dev);
1769         if (retval < 0)
1770                 goto err_release_ring_2;
1771
1772         rtl_hw_start(dev);
1773
1774         rtl8169_request_timer(dev);
1775
1776         rtl8169_check_link_status(dev, tp, tp->mmio_addr);
1777 out:
1778         return retval;
1779
1780 err_release_ring_2:
1781         rtl8169_rx_clear(tp);
1782 err_free_rx_1:
1783         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
1784                             tp->RxPhyAddr);
1785 err_free_tx_0:
1786         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
1787                             tp->TxPhyAddr);
1788         goto out;
1789 }
1790
1791 static void rtl8169_hw_reset(void __iomem *ioaddr)
1792 {
1793         /* Disable interrupts */
1794         rtl8169_irq_mask_and_ack(ioaddr);
1795
1796         /* Reset the chipset */
1797         RTL_W8(ChipCmd, CmdReset);
1798
1799         /* PCI commit */
1800         RTL_R8(ChipCmd);
1801 }
1802
1803 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
1804 {
1805         void __iomem *ioaddr = tp->mmio_addr;
1806         u32 cfg = rtl8169_rx_config;
1807
1808         cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
1809         RTL_W32(RxConfig, cfg);
1810
1811         /* Set DMA burst size and Interframe Gap Time */
1812         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
1813                 (InterFrameGap << TxInterFrameGapShift));
1814 }
1815
1816 static void rtl_hw_start(struct net_device *dev)
1817 {
1818         struct rtl8169_private *tp = netdev_priv(dev);
1819         void __iomem *ioaddr = tp->mmio_addr;
1820         unsigned int i;
1821
1822         /* Soft reset the chip. */
1823         RTL_W8(ChipCmd, CmdReset);
1824
1825         /* Check that the chip has finished the reset. */
1826         for (i = 0; i < 100; i++) {
1827                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
1828                         break;
1829                 msleep_interruptible(1);
1830         }
1831
1832         tp->hw_start(dev);
1833
1834         netif_start_queue(dev);
1835 }
1836
1837
1838 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
1839                                          void __iomem *ioaddr)
1840 {
1841         /*
1842          * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
1843          * register to be written before TxDescAddrLow to work.
1844          * Switching from MMIO to I/O access fixes the issue as well.
1845          */
1846         RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
1847         RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_32BIT_MASK);
1848         RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
1849         RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_32BIT_MASK);
1850 }
1851
1852 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
1853 {
1854         u16 cmd;
1855
1856         cmd = RTL_R16(CPlusCmd);
1857         RTL_W16(CPlusCmd, cmd);
1858         return cmd;
1859 }
1860
1861 static void rtl_set_rx_max_size(void __iomem *ioaddr)
1862 {
1863         /* Low hurts. Let's disable the filtering. */
1864         RTL_W16(RxMaxSize, 16383);
1865 }
1866
1867 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
1868 {
1869         struct {
1870                 u32 mac_version;
1871                 u32 clk;
1872                 u32 val;
1873         } cfg2_info [] = {
1874                 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
1875                 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
1876                 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
1877                 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
1878         }, *p = cfg2_info;
1879         unsigned int i;
1880         u32 clk;
1881
1882         clk = RTL_R8(Config2) & PCI_Clock_66MHz;
1883         for (i = 0; i < ARRAY_SIZE(cfg2_info); i++) {
1884                 if ((p->mac_version == mac_version) && (p->clk == clk)) {
1885                         RTL_W32(0x7c, p->val);
1886                         break;
1887                 }
1888         }
1889 }
1890
1891 static void rtl_hw_start_8169(struct net_device *dev)
1892 {
1893         struct rtl8169_private *tp = netdev_priv(dev);
1894         void __iomem *ioaddr = tp->mmio_addr;
1895         struct pci_dev *pdev = tp->pci_dev;
1896
1897         if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
1898                 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
1899                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
1900         }
1901
1902         RTL_W8(Cfg9346, Cfg9346_Unlock);
1903         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
1904             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
1905             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
1906             (tp->mac_version == RTL_GIGA_MAC_VER_04))
1907                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
1908
1909         RTL_W8(EarlyTxThres, EarlyTxThld);
1910
1911         rtl_set_rx_max_size(ioaddr);
1912
1913         rtl_set_rx_tx_config_registers(tp);
1914
1915         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
1916
1917         if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
1918             (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
1919                 dprintk(KERN_INFO PFX "Set MAC Reg C+CR Offset 0xE0. "
1920                         "Bit-3 and bit-14 MUST be 1\n");
1921                 tp->cp_cmd |= (1 << 14);
1922         }
1923
1924         RTL_W16(CPlusCmd, tp->cp_cmd);
1925
1926         rtl8169_set_magic_reg(ioaddr, tp->mac_version);
1927
1928         /*
1929          * Undocumented corner. Supposedly:
1930          * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
1931          */
1932         RTL_W16(IntrMitigate, 0x0000);
1933
1934         rtl_set_rx_tx_desc_registers(tp, ioaddr);
1935
1936         RTL_W8(Cfg9346, Cfg9346_Lock);
1937
1938         /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
1939         RTL_R8(IntrMask);
1940
1941         RTL_W32(RxMissed, 0);
1942
1943         rtl_set_rx_mode(dev);
1944
1945         /* no early-rx interrupts */
1946         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
1947
1948         /* Enable all known interrupts by setting the interrupt mask. */
1949         RTL_W16(IntrMask, tp->intr_event);
1950
1951         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
1952 }
1953
1954 static void rtl_hw_start_8168(struct net_device *dev)
1955 {
1956         struct rtl8169_private *tp = netdev_priv(dev);
1957         void __iomem *ioaddr = tp->mmio_addr;
1958         struct pci_dev *pdev = tp->pci_dev;
1959         u8 ctl;
1960
1961         RTL_W8(Cfg9346, Cfg9346_Unlock);
1962
1963         RTL_W8(EarlyTxThres, EarlyTxThld);
1964
1965         rtl_set_rx_max_size(ioaddr);
1966
1967         rtl_set_rx_tx_config_registers(tp);
1968
1969         tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
1970
1971         RTL_W16(CPlusCmd, tp->cp_cmd);
1972
1973         /* Tx performance tweak. */
1974         pci_read_config_byte(pdev, 0x69, &ctl);
1975         ctl = (ctl & ~0x70) | 0x50;
1976         pci_write_config_byte(pdev, 0x69, ctl);
1977
1978         RTL_W16(IntrMitigate, 0x5151);
1979
1980         /* Work around for RxFIFO overflow. */
1981         if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
1982                 tp->intr_event |= RxFIFOOver | PCSTimeout;
1983                 tp->intr_event &= ~RxOverflow;
1984         }
1985
1986         rtl_set_rx_tx_desc_registers(tp, ioaddr);
1987
1988         RTL_W8(Cfg9346, Cfg9346_Lock);
1989
1990         RTL_R8(IntrMask);
1991
1992         RTL_W32(RxMissed, 0);
1993
1994         rtl_set_rx_mode(dev);
1995
1996         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
1997
1998         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
1999
2000         RTL_W16(IntrMask, tp->intr_event);
2001 }
2002
2003 static void rtl_hw_start_8101(struct net_device *dev)
2004 {
2005         struct rtl8169_private *tp = netdev_priv(dev);
2006         void __iomem *ioaddr = tp->mmio_addr;
2007         struct pci_dev *pdev = tp->pci_dev;
2008
2009         if (tp->mac_version == RTL_GIGA_MAC_VER_13) {
2010                 pci_write_config_word(pdev, 0x68, 0x00);
2011                 pci_write_config_word(pdev, 0x69, 0x08);
2012         }
2013
2014         RTL_W8(Cfg9346, Cfg9346_Unlock);
2015
2016         RTL_W8(EarlyTxThres, EarlyTxThld);
2017
2018         rtl_set_rx_max_size(ioaddr);
2019
2020         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2021
2022         RTL_W16(CPlusCmd, tp->cp_cmd);
2023
2024         RTL_W16(IntrMitigate, 0x0000);
2025
2026         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2027
2028         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2029         rtl_set_rx_tx_config_registers(tp);
2030
2031         RTL_W8(Cfg9346, Cfg9346_Lock);
2032
2033         RTL_R8(IntrMask);
2034
2035         RTL_W32(RxMissed, 0);
2036
2037         rtl_set_rx_mode(dev);
2038
2039         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2040
2041         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2042
2043         RTL_W16(IntrMask, tp->intr_event);
2044 }
2045
2046 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2047 {
2048         struct rtl8169_private *tp = netdev_priv(dev);
2049         int ret = 0;
2050
2051         if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2052                 return -EINVAL;
2053
2054         dev->mtu = new_mtu;
2055
2056         if (!netif_running(dev))
2057                 goto out;
2058
2059         rtl8169_down(dev);
2060
2061         rtl8169_set_rxbufsize(tp, dev);
2062
2063         ret = rtl8169_init_ring(dev);
2064         if (ret < 0)
2065                 goto out;
2066
2067         netif_poll_enable(dev);
2068
2069         rtl_hw_start(dev);
2070
2071         rtl8169_request_timer(dev);
2072
2073 out:
2074         return ret;
2075 }
2076
2077 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2078 {
2079         desc->addr = 0x0badbadbadbadbadull;
2080         desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2081 }
2082
2083 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2084                                 struct sk_buff **sk_buff, struct RxDesc *desc)
2085 {
2086         struct pci_dev *pdev = tp->pci_dev;
2087
2088         pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2089                          PCI_DMA_FROMDEVICE);
2090         dev_kfree_skb(*sk_buff);
2091         *sk_buff = NULL;
2092         rtl8169_make_unusable_by_asic(desc);
2093 }
2094
2095 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2096 {
2097         u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2098
2099         desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2100 }
2101
2102 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2103                                        u32 rx_buf_sz)
2104 {
2105         desc->addr = cpu_to_le64(mapping);
2106         wmb();
2107         rtl8169_mark_to_asic(desc, rx_buf_sz);
2108 }
2109
2110 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2111                                             struct net_device *dev,
2112                                             struct RxDesc *desc, int rx_buf_sz,
2113                                             unsigned int align)
2114 {
2115         struct sk_buff *skb;
2116         dma_addr_t mapping;
2117         unsigned int pad;
2118
2119         pad = align ? align : NET_IP_ALIGN;
2120
2121         skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
2122         if (!skb)
2123                 goto err_out;
2124
2125         skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
2126
2127         mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
2128                                  PCI_DMA_FROMDEVICE);
2129
2130         rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
2131 out:
2132         return skb;
2133
2134 err_out:
2135         rtl8169_make_unusable_by_asic(desc);
2136         goto out;
2137 }
2138
2139 static void rtl8169_rx_clear(struct rtl8169_private *tp)
2140 {
2141         unsigned int i;
2142
2143         for (i = 0; i < NUM_RX_DESC; i++) {
2144                 if (tp->Rx_skbuff[i]) {
2145                         rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
2146                                             tp->RxDescArray + i);
2147                 }
2148         }
2149 }
2150
2151 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
2152                            u32 start, u32 end)
2153 {
2154         u32 cur;
2155
2156         for (cur = start; end - cur != 0; cur++) {
2157                 struct sk_buff *skb;
2158                 unsigned int i = cur % NUM_RX_DESC;
2159
2160                 WARN_ON((s32)(end - cur) < 0);
2161
2162                 if (tp->Rx_skbuff[i])
2163                         continue;
2164
2165                 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
2166                                            tp->RxDescArray + i,
2167                                            tp->rx_buf_sz, tp->align);
2168                 if (!skb)
2169                         break;
2170
2171                 tp->Rx_skbuff[i] = skb;
2172         }
2173         return cur - start;
2174 }
2175
2176 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
2177 {
2178         desc->opts1 |= cpu_to_le32(RingEnd);
2179 }
2180
2181 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
2182 {
2183         tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
2184 }
2185
2186 static int rtl8169_init_ring(struct net_device *dev)
2187 {
2188         struct rtl8169_private *tp = netdev_priv(dev);
2189
2190         rtl8169_init_ring_indexes(tp);
2191
2192         memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
2193         memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
2194
2195         if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
2196                 goto err_out;
2197
2198         rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
2199
2200         return 0;
2201
2202 err_out:
2203         rtl8169_rx_clear(tp);
2204         return -ENOMEM;
2205 }
2206
2207 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
2208                                  struct TxDesc *desc)
2209 {
2210         unsigned int len = tx_skb->len;
2211
2212         pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
2213         desc->opts1 = 0x00;
2214         desc->opts2 = 0x00;
2215         desc->addr = 0x00;
2216         tx_skb->len = 0;
2217 }
2218
2219 static void rtl8169_tx_clear(struct rtl8169_private *tp)
2220 {
2221         unsigned int i;
2222
2223         for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
2224                 unsigned int entry = i % NUM_TX_DESC;
2225                 struct ring_info *tx_skb = tp->tx_skb + entry;
2226                 unsigned int len = tx_skb->len;
2227
2228                 if (len) {
2229                         struct sk_buff *skb = tx_skb->skb;
2230
2231                         rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
2232                                              tp->TxDescArray + entry);
2233                         if (skb) {
2234                                 dev_kfree_skb(skb);
2235                                 tx_skb->skb = NULL;
2236                         }
2237                         tp->stats.tx_dropped++;
2238                 }
2239         }
2240         tp->cur_tx = tp->dirty_tx = 0;
2241 }
2242
2243 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
2244 {
2245         struct rtl8169_private *tp = netdev_priv(dev);
2246
2247         PREPARE_DELAYED_WORK(&tp->task, task);
2248         schedule_delayed_work(&tp->task, 4);
2249 }
2250
2251 static void rtl8169_wait_for_quiescence(struct net_device *dev)
2252 {
2253         struct rtl8169_private *tp = netdev_priv(dev);
2254         void __iomem *ioaddr = tp->mmio_addr;
2255
2256         synchronize_irq(dev->irq);
2257
2258         /* Wait for any pending NAPI task to complete */
2259         netif_poll_disable(dev);
2260
2261         rtl8169_irq_mask_and_ack(ioaddr);
2262
2263         netif_poll_enable(dev);
2264 }
2265
2266 static void rtl8169_reinit_task(struct work_struct *work)
2267 {
2268         struct rtl8169_private *tp =
2269                 container_of(work, struct rtl8169_private, task.work);
2270         struct net_device *dev = tp->dev;
2271         int ret;
2272
2273         rtnl_lock();
2274
2275         if (!netif_running(dev))
2276                 goto out_unlock;
2277
2278         rtl8169_wait_for_quiescence(dev);
2279         rtl8169_close(dev);
2280
2281         ret = rtl8169_open(dev);
2282         if (unlikely(ret < 0)) {
2283                 if (net_ratelimit() && netif_msg_drv(tp)) {
2284                         printk(PFX KERN_ERR "%s: reinit failure (status = %d)."
2285                                " Rescheduling.\n", dev->name, ret);
2286                 }
2287                 rtl8169_schedule_work(dev, rtl8169_reinit_task);
2288         }
2289
2290 out_unlock:
2291         rtnl_unlock();
2292 }
2293
2294 static void rtl8169_reset_task(struct work_struct *work)
2295 {
2296         struct rtl8169_private *tp =
2297                 container_of(work, struct rtl8169_private, task.work);
2298         struct net_device *dev = tp->dev;
2299
2300         rtnl_lock();
2301
2302         if (!netif_running(dev))
2303                 goto out_unlock;
2304
2305         rtl8169_wait_for_quiescence(dev);
2306
2307         rtl8169_rx_interrupt(dev, tp, tp->mmio_addr);
2308         rtl8169_tx_clear(tp);
2309
2310         if (tp->dirty_rx == tp->cur_rx) {
2311                 rtl8169_init_ring_indexes(tp);
2312                 rtl_hw_start(dev);
2313                 netif_wake_queue(dev);
2314         } else {
2315                 if (net_ratelimit() && netif_msg_intr(tp)) {
2316                         printk(PFX KERN_EMERG "%s: Rx buffers shortage\n",
2317                                dev->name);
2318                 }
2319                 rtl8169_schedule_work(dev, rtl8169_reset_task);
2320         }
2321
2322 out_unlock:
2323         rtnl_unlock();
2324 }
2325
2326 static void rtl8169_tx_timeout(struct net_device *dev)
2327 {
2328         struct rtl8169_private *tp = netdev_priv(dev);
2329
2330         rtl8169_hw_reset(tp->mmio_addr);
2331
2332         /* Let's wait a bit while any (async) irq lands on */
2333         rtl8169_schedule_work(dev, rtl8169_reset_task);
2334 }
2335
2336 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
2337                               u32 opts1)
2338 {
2339         struct skb_shared_info *info = skb_shinfo(skb);
2340         unsigned int cur_frag, entry;
2341         struct TxDesc *txd;
2342
2343         entry = tp->cur_tx;
2344         for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
2345                 skb_frag_t *frag = info->frags + cur_frag;
2346                 dma_addr_t mapping;
2347                 u32 status, len;
2348                 void *addr;
2349
2350                 entry = (entry + 1) % NUM_TX_DESC;
2351
2352                 txd = tp->TxDescArray + entry;
2353                 len = frag->size;
2354                 addr = ((void *) page_address(frag->page)) + frag->page_offset;
2355                 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
2356
2357                 /* anti gcc 2.95.3 bugware (sic) */
2358                 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2359
2360                 txd->opts1 = cpu_to_le32(status);
2361                 txd->addr = cpu_to_le64(mapping);
2362
2363                 tp->tx_skb[entry].len = len;
2364         }
2365
2366         if (cur_frag) {
2367                 tp->tx_skb[entry].skb = skb;
2368                 txd->opts1 |= cpu_to_le32(LastFrag);
2369         }
2370
2371         return cur_frag;
2372 }
2373
2374 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
2375 {
2376         if (dev->features & NETIF_F_TSO) {
2377                 u32 mss = skb_shinfo(skb)->gso_size;
2378
2379                 if (mss)
2380                         return LargeSend | ((mss & MSSMask) << MSSShift);
2381         }
2382         if (skb->ip_summed == CHECKSUM_PARTIAL) {
2383                 const struct iphdr *ip = ip_hdr(skb);
2384
2385                 if (ip->protocol == IPPROTO_TCP)
2386                         return IPCS | TCPCS;
2387                 else if (ip->protocol == IPPROTO_UDP)
2388                         return IPCS | UDPCS;
2389                 WARN_ON(1);     /* we need a WARN() */
2390         }
2391         return 0;
2392 }
2393
2394 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
2395 {
2396         struct rtl8169_private *tp = netdev_priv(dev);
2397         unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
2398         struct TxDesc *txd = tp->TxDescArray + entry;
2399         void __iomem *ioaddr = tp->mmio_addr;
2400         dma_addr_t mapping;
2401         u32 status, len;
2402         u32 opts1;
2403         int ret = NETDEV_TX_OK;
2404
2405         if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
2406                 if (netif_msg_drv(tp)) {
2407                         printk(KERN_ERR
2408                                "%s: BUG! Tx Ring full when queue awake!\n",
2409                                dev->name);
2410                 }
2411                 goto err_stop;
2412         }
2413
2414         if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
2415                 goto err_stop;
2416
2417         opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
2418
2419         frags = rtl8169_xmit_frags(tp, skb, opts1);
2420         if (frags) {
2421                 len = skb_headlen(skb);
2422                 opts1 |= FirstFrag;
2423         } else {
2424                 len = skb->len;
2425
2426                 if (unlikely(len < ETH_ZLEN)) {
2427                         if (skb_padto(skb, ETH_ZLEN))
2428                                 goto err_update_stats;
2429                         len = ETH_ZLEN;
2430                 }
2431
2432                 opts1 |= FirstFrag | LastFrag;
2433                 tp->tx_skb[entry].skb = skb;
2434         }
2435
2436         mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
2437
2438         tp->tx_skb[entry].len = len;
2439         txd->addr = cpu_to_le64(mapping);
2440         txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
2441
2442         wmb();
2443
2444         /* anti gcc 2.95.3 bugware (sic) */
2445         status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
2446         txd->opts1 = cpu_to_le32(status);
2447
2448         dev->trans_start = jiffies;
2449
2450         tp->cur_tx += frags + 1;
2451
2452         smp_wmb();
2453
2454         RTL_W8(TxPoll, NPQ);    /* set polling bit */
2455
2456         if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
2457                 netif_stop_queue(dev);
2458                 smp_rmb();
2459                 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
2460                         netif_wake_queue(dev);
2461         }
2462
2463 out:
2464         return ret;
2465
2466 err_stop:
2467         netif_stop_queue(dev);
2468         ret = NETDEV_TX_BUSY;
2469 err_update_stats:
2470         tp->stats.tx_dropped++;
2471         goto out;
2472 }
2473
2474 static void rtl8169_pcierr_interrupt(struct net_device *dev)
2475 {
2476         struct rtl8169_private *tp = netdev_priv(dev);
2477         struct pci_dev *pdev = tp->pci_dev;
2478         void __iomem *ioaddr = tp->mmio_addr;
2479         u16 pci_status, pci_cmd;
2480
2481         pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
2482         pci_read_config_word(pdev, PCI_STATUS, &pci_status);
2483
2484         if (netif_msg_intr(tp)) {
2485                 printk(KERN_ERR
2486                        "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
2487                        dev->name, pci_cmd, pci_status);
2488         }
2489
2490         /*
2491          * The recovery sequence below admits a very elaborated explanation:
2492          * - it seems to work;
2493          * - I did not see what else could be done;
2494          * - it makes iop3xx happy.
2495          *
2496          * Feel free to adjust to your needs.
2497          */
2498         if (pdev->broken_parity_status)
2499                 pci_cmd &= ~PCI_COMMAND_PARITY;
2500         else
2501                 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
2502
2503         pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
2504
2505         pci_write_config_word(pdev, PCI_STATUS,
2506                 pci_status & (PCI_STATUS_DETECTED_PARITY |
2507                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
2508                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
2509
2510         /* The infamous DAC f*ckup only happens at boot time */
2511         if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
2512                 if (netif_msg_intr(tp))
2513                         printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
2514                 tp->cp_cmd &= ~PCIDAC;
2515                 RTL_W16(CPlusCmd, tp->cp_cmd);
2516                 dev->features &= ~NETIF_F_HIGHDMA;
2517         }
2518
2519         rtl8169_hw_reset(ioaddr);
2520
2521         rtl8169_schedule_work(dev, rtl8169_reinit_task);
2522 }
2523
2524 static void rtl8169_tx_interrupt(struct net_device *dev,
2525                                  struct rtl8169_private *tp,
2526                                  void __iomem *ioaddr)
2527 {
2528         unsigned int dirty_tx, tx_left;
2529
2530         dirty_tx = tp->dirty_tx;
2531         smp_rmb();
2532         tx_left = tp->cur_tx - dirty_tx;
2533
2534         while (tx_left > 0) {
2535                 unsigned int entry = dirty_tx % NUM_TX_DESC;
2536                 struct ring_info *tx_skb = tp->tx_skb + entry;
2537                 u32 len = tx_skb->len;
2538                 u32 status;
2539
2540                 rmb();
2541                 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
2542                 if (status & DescOwn)
2543                         break;
2544
2545                 tp->stats.tx_bytes += len;
2546                 tp->stats.tx_packets++;
2547
2548                 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
2549
2550                 if (status & LastFrag) {
2551                         dev_kfree_skb_irq(tx_skb->skb);
2552                         tx_skb->skb = NULL;
2553                 }
2554                 dirty_tx++;
2555                 tx_left--;
2556         }
2557
2558         if (tp->dirty_tx != dirty_tx) {
2559                 tp->dirty_tx = dirty_tx;
2560                 smp_wmb();
2561                 if (netif_queue_stopped(dev) &&
2562                     (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
2563                         netif_wake_queue(dev);
2564                 }
2565         }
2566 }
2567
2568 static inline int rtl8169_fragmented_frame(u32 status)
2569 {
2570         return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
2571 }
2572
2573 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
2574 {
2575         u32 opts1 = le32_to_cpu(desc->opts1);
2576         u32 status = opts1 & RxProtoMask;
2577
2578         if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
2579             ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
2580             ((status == RxProtoIP) && !(opts1 & IPFail)))
2581                 skb->ip_summed = CHECKSUM_UNNECESSARY;
2582         else
2583                 skb->ip_summed = CHECKSUM_NONE;
2584 }
2585
2586 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
2587                                        struct rtl8169_private *tp, int pkt_size,
2588                                        dma_addr_t addr)
2589 {
2590         struct sk_buff *skb;
2591         bool done = false;
2592
2593         if (pkt_size >= rx_copybreak)
2594                 goto out;
2595
2596         skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
2597         if (!skb)
2598                 goto out;
2599
2600         pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
2601                                     PCI_DMA_FROMDEVICE);
2602         skb_reserve(skb, NET_IP_ALIGN);
2603         skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
2604         *sk_buff = skb;
2605         done = true;
2606 out:
2607         return done;
2608 }
2609
2610 static int rtl8169_rx_interrupt(struct net_device *dev,
2611                                 struct rtl8169_private *tp,
2612                                 void __iomem *ioaddr)
2613 {
2614         unsigned int cur_rx, rx_left;
2615         unsigned int delta, count;
2616
2617         cur_rx = tp->cur_rx;
2618         rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
2619         rx_left = rtl8169_rx_quota(rx_left, (u32) dev->quota);
2620
2621         for (; rx_left > 0; rx_left--, cur_rx++) {
2622                 unsigned int entry = cur_rx % NUM_RX_DESC;
2623                 struct RxDesc *desc = tp->RxDescArray + entry;
2624                 u32 status;
2625
2626                 rmb();
2627                 status = le32_to_cpu(desc->opts1);
2628
2629                 if (status & DescOwn)
2630                         break;
2631                 if (unlikely(status & RxRES)) {
2632                         if (netif_msg_rx_err(tp)) {
2633                                 printk(KERN_INFO
2634                                        "%s: Rx ERROR. status = %08x\n",
2635                                        dev->name, status);
2636                         }
2637                         tp->stats.rx_errors++;
2638                         if (status & (RxRWT | RxRUNT))
2639                                 tp->stats.rx_length_errors++;
2640                         if (status & RxCRC)
2641                                 tp->stats.rx_crc_errors++;
2642                         if (status & RxFOVF) {
2643                                 rtl8169_schedule_work(dev, rtl8169_reset_task);
2644                                 tp->stats.rx_fifo_errors++;
2645                         }
2646                         rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2647                 } else {
2648                         struct sk_buff *skb = tp->Rx_skbuff[entry];
2649                         dma_addr_t addr = le64_to_cpu(desc->addr);
2650                         int pkt_size = (status & 0x00001FFF) - 4;
2651                         struct pci_dev *pdev = tp->pci_dev;
2652
2653                         /*
2654                          * The driver does not support incoming fragmented
2655                          * frames. They are seen as a symptom of over-mtu
2656                          * sized frames.
2657                          */
2658                         if (unlikely(rtl8169_fragmented_frame(status))) {
2659                                 tp->stats.rx_dropped++;
2660                                 tp->stats.rx_length_errors++;
2661                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2662                                 continue;
2663                         }
2664
2665                         rtl8169_rx_csum(skb, desc);
2666
2667                         if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
2668                                 pci_dma_sync_single_for_device(pdev, addr,
2669                                         pkt_size, PCI_DMA_FROMDEVICE);
2670                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
2671                         } else {
2672                                 pci_unmap_single(pdev, addr, pkt_size,
2673                                                  PCI_DMA_FROMDEVICE);
2674                                 tp->Rx_skbuff[entry] = NULL;
2675                         }
2676
2677                         skb_put(skb, pkt_size);
2678                         skb->protocol = eth_type_trans(skb, dev);
2679
2680                         if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
2681                                 rtl8169_rx_skb(skb);
2682
2683                         dev->last_rx = jiffies;
2684                         tp->stats.rx_bytes += pkt_size;
2685                         tp->stats.rx_packets++;
2686                 }
2687
2688                 /* Work around for AMD plateform. */
2689                 if ((desc->opts2 & 0xfffe000) &&
2690                     (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
2691                         desc->opts2 = 0;
2692                         cur_rx++;
2693                 }
2694         }
2695
2696         count = cur_rx - tp->cur_rx;
2697         tp->cur_rx = cur_rx;
2698
2699         delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
2700         if (!delta && count && netif_msg_intr(tp))
2701                 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
2702         tp->dirty_rx += delta;
2703
2704         /*
2705          * FIXME: until there is periodic timer to try and refill the ring,
2706          * a temporary shortage may definitely kill the Rx process.
2707          * - disable the asic to try and avoid an overflow and kick it again
2708          *   after refill ?
2709          * - how do others driver handle this condition (Uh oh...).
2710          */
2711         if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
2712                 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
2713
2714         return count;
2715 }
2716
2717 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
2718 {
2719         struct net_device *dev = dev_instance;
2720         struct rtl8169_private *tp = netdev_priv(dev);
2721         int boguscnt = max_interrupt_work;
2722         void __iomem *ioaddr = tp->mmio_addr;
2723         int status;
2724         int handled = 0;
2725
2726         do {
2727                 status = RTL_R16(IntrStatus);
2728
2729                 /* hotplug/major error/no more work/shared irq */
2730                 if ((status == 0xFFFF) || !status)
2731                         break;
2732
2733                 handled = 1;
2734
2735                 if (unlikely(!netif_running(dev))) {
2736                         rtl8169_asic_down(ioaddr);
2737                         goto out;
2738                 }
2739
2740                 status &= tp->intr_mask;
2741                 RTL_W16(IntrStatus,
2742                         (status & RxFIFOOver) ? (status | RxOverflow) : status);
2743
2744                 if (!(status & tp->intr_event))
2745                         break;
2746
2747                 /* Work around for rx fifo overflow */
2748                 if (unlikely(status & RxFIFOOver) &&
2749                     (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
2750                         netif_stop_queue(dev);
2751                         rtl8169_tx_timeout(dev);
2752                         break;
2753                 }
2754
2755                 if (unlikely(status & SYSErr)) {
2756                         rtl8169_pcierr_interrupt(dev);
2757                         break;
2758                 }
2759
2760                 if (status & LinkChg)
2761                         rtl8169_check_link_status(dev, tp, ioaddr);
2762
2763 #ifdef CONFIG_R8169_NAPI
2764                 RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
2765                 tp->intr_mask = ~tp->napi_event;
2766
2767                 if (likely(netif_rx_schedule_prep(dev)))
2768                         __netif_rx_schedule(dev);
2769                 else if (netif_msg_intr(tp)) {
2770                         printk(KERN_INFO "%s: interrupt %04x taken in poll\n",
2771                                dev->name, status);
2772                 }
2773                 break;
2774 #else
2775                 /* Rx interrupt */
2776                 if (status & (RxOK | RxOverflow | RxFIFOOver))
2777                         rtl8169_rx_interrupt(dev, tp, ioaddr);
2778
2779                 /* Tx interrupt */
2780                 if (status & (TxOK | TxErr))
2781                         rtl8169_tx_interrupt(dev, tp, ioaddr);
2782 #endif
2783
2784                 boguscnt--;
2785         } while (boguscnt > 0);
2786
2787         if (boguscnt <= 0) {
2788                 if (netif_msg_intr(tp) && net_ratelimit() ) {
2789                         printk(KERN_WARNING
2790                                "%s: Too much work at interrupt!\n", dev->name);
2791                 }
2792                 /* Clear all interrupt sources. */
2793                 RTL_W16(IntrStatus, 0xffff);
2794         }
2795 out:
2796         return IRQ_RETVAL(handled);
2797 }
2798
2799 #ifdef CONFIG_R8169_NAPI
2800 static int rtl8169_poll(struct net_device *dev, int *budget)
2801 {
2802         unsigned int work_done, work_to_do = min(*budget, dev->quota);
2803         struct rtl8169_private *tp = netdev_priv(dev);
2804         void __iomem *ioaddr = tp->mmio_addr;
2805
2806         work_done = rtl8169_rx_interrupt(dev, tp, ioaddr);
2807         rtl8169_tx_interrupt(dev, tp, ioaddr);
2808
2809         *budget -= work_done;
2810         dev->quota -= work_done;
2811
2812         if (work_done < work_to_do) {
2813                 netif_rx_complete(dev);
2814                 tp->intr_mask = 0xffff;
2815                 /*
2816                  * 20040426: the barrier is not strictly required but the
2817                  * behavior of the irq handler could be less predictable
2818                  * without it. Btw, the lack of flush for the posted pci
2819                  * write is safe - FR
2820                  */
2821                 smp_wmb();
2822                 RTL_W16(IntrMask, tp->intr_event);
2823         }
2824
2825         return (work_done >= work_to_do);
2826 }
2827 #endif
2828
2829 static void rtl8169_down(struct net_device *dev)
2830 {
2831         struct rtl8169_private *tp = netdev_priv(dev);
2832         void __iomem *ioaddr = tp->mmio_addr;
2833         unsigned int poll_locked = 0;
2834         unsigned int intrmask;
2835
2836         rtl8169_delete_timer(dev);
2837
2838         netif_stop_queue(dev);
2839
2840 core_down:
2841         spin_lock_irq(&tp->lock);
2842
2843         rtl8169_asic_down(ioaddr);
2844
2845         /* Update the error counts. */
2846         tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2847         RTL_W32(RxMissed, 0);
2848
2849         spin_unlock_irq(&tp->lock);
2850
2851         synchronize_irq(dev->irq);
2852
2853         if (!poll_locked) {
2854                 netif_poll_disable(dev);
2855                 poll_locked++;
2856         }
2857
2858         /* Give a racing hard_start_xmit a few cycles to complete. */
2859         synchronize_sched();  /* FIXME: should this be synchronize_irq()? */
2860
2861         /*
2862          * And now for the 50k$ question: are IRQ disabled or not ?
2863          *
2864          * Two paths lead here:
2865          * 1) dev->close
2866          *    -> netif_running() is available to sync the current code and the
2867          *       IRQ handler. See rtl8169_interrupt for details.
2868          * 2) dev->change_mtu
2869          *    -> rtl8169_poll can not be issued again and re-enable the
2870          *       interruptions. Let's simply issue the IRQ down sequence again.
2871          *
2872          * No loop if hotpluged or major error (0xffff).
2873          */
2874         intrmask = RTL_R16(IntrMask);
2875         if (intrmask && (intrmask != 0xffff))
2876                 goto core_down;
2877
2878         rtl8169_tx_clear(tp);
2879
2880         rtl8169_rx_clear(tp);
2881 }
2882
2883 static int rtl8169_close(struct net_device *dev)
2884 {
2885         struct rtl8169_private *tp = netdev_priv(dev);
2886         struct pci_dev *pdev = tp->pci_dev;
2887
2888         rtl8169_down(dev);
2889
2890         free_irq(dev->irq, dev);
2891
2892         netif_poll_enable(dev);
2893
2894         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2895                             tp->RxPhyAddr);
2896         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2897                             tp->TxPhyAddr);
2898         tp->TxDescArray = NULL;
2899         tp->RxDescArray = NULL;
2900
2901         return 0;
2902 }
2903
2904 static void rtl_set_rx_mode(struct net_device *dev)
2905 {
2906         struct rtl8169_private *tp = netdev_priv(dev);
2907         void __iomem *ioaddr = tp->mmio_addr;
2908         unsigned long flags;
2909         u32 mc_filter[2];       /* Multicast hash filter */
2910         int rx_mode;
2911         u32 tmp = 0;
2912
2913         if (dev->flags & IFF_PROMISC) {
2914                 /* Unconditionally log net taps. */
2915                 if (netif_msg_link(tp)) {
2916                         printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
2917                                dev->name);
2918                 }
2919                 rx_mode =
2920                     AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
2921                     AcceptAllPhys;
2922                 mc_filter[1] = mc_filter[0] = 0xffffffff;
2923         } else if ((dev->mc_count > multicast_filter_limit)
2924                    || (dev->flags & IFF_ALLMULTI)) {
2925                 /* Too many to filter perfectly -- accept all multicasts. */
2926                 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
2927                 mc_filter[1] = mc_filter[0] = 0xffffffff;
2928         } else {
2929                 struct dev_mc_list *mclist;
2930                 unsigned int i;
2931
2932                 rx_mode = AcceptBroadcast | AcceptMyPhys;
2933                 mc_filter[1] = mc_filter[0] = 0;
2934                 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
2935                      i++, mclist = mclist->next) {
2936                         int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
2937                         mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
2938                         rx_mode |= AcceptMulticast;
2939                 }
2940         }
2941
2942         spin_lock_irqsave(&tp->lock, flags);
2943
2944         tmp = rtl8169_rx_config | rx_mode |
2945               (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2946
2947         if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
2948             (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
2949             (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2950             (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
2951             (tp->mac_version == RTL_GIGA_MAC_VER_15)) {
2952                 mc_filter[0] = 0xffffffff;
2953                 mc_filter[1] = 0xffffffff;
2954         }
2955
2956         RTL_W32(MAR0 + 0, mc_filter[0]);
2957         RTL_W32(MAR0 + 4, mc_filter[1]);
2958
2959         RTL_W32(RxConfig, tmp);
2960
2961         spin_unlock_irqrestore(&tp->lock, flags);
2962 }
2963
2964 /**
2965  *  rtl8169_get_stats - Get rtl8169 read/write statistics
2966  *  @dev: The Ethernet Device to get statistics for
2967  *
2968  *  Get TX/RX statistics for rtl8169
2969  */
2970 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
2971 {
2972         struct rtl8169_private *tp = netdev_priv(dev);
2973         void __iomem *ioaddr = tp->mmio_addr;
2974         unsigned long flags;
2975
2976         if (netif_running(dev)) {
2977                 spin_lock_irqsave(&tp->lock, flags);
2978                 tp->stats.rx_missed_errors += RTL_R32(RxMissed);
2979                 RTL_W32(RxMissed, 0);
2980                 spin_unlock_irqrestore(&tp->lock, flags);
2981         }
2982
2983         return &tp->stats;
2984 }
2985
2986 #ifdef CONFIG_PM
2987
2988 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
2989 {
2990         struct net_device *dev = pci_get_drvdata(pdev);
2991         struct rtl8169_private *tp = netdev_priv(dev);
2992         void __iomem *ioaddr = tp->mmio_addr;
2993
2994         if (!netif_running(dev))
2995                 goto out_pci_suspend;
2996
2997         netif_device_detach(dev);
2998         netif_stop_queue(dev);
2999
3000         spin_lock_irq(&tp->lock);
3001
3002         rtl8169_asic_down(ioaddr);
3003
3004         tp->stats.rx_missed_errors += RTL_R32(RxMissed);
3005         RTL_W32(RxMissed, 0);
3006
3007         spin_unlock_irq(&tp->lock);
3008
3009 out_pci_suspend:
3010         pci_save_state(pdev);
3011         pci_enable_wake(pdev, pci_choose_state(pdev, state), tp->wol_enabled);
3012         pci_set_power_state(pdev, pci_choose_state(pdev, state));
3013
3014         return 0;
3015 }
3016
3017 static int rtl8169_resume(struct pci_dev *pdev)
3018 {
3019         struct net_device *dev = pci_get_drvdata(pdev);
3020
3021         pci_set_power_state(pdev, PCI_D0);
3022         pci_restore_state(pdev);
3023         pci_enable_wake(pdev, PCI_D0, 0);
3024
3025         if (!netif_running(dev))
3026                 goto out;
3027
3028         netif_device_attach(dev);
3029
3030         rtl8169_schedule_work(dev, rtl8169_reset_task);
3031 out:
3032         return 0;
3033 }
3034
3035 #endif /* CONFIG_PM */
3036
3037 static struct pci_driver rtl8169_pci_driver = {
3038         .name           = MODULENAME,
3039         .id_table       = rtl8169_pci_tbl,
3040         .probe          = rtl8169_init_one,
3041         .remove         = __devexit_p(rtl8169_remove_one),
3042 #ifdef CONFIG_PM
3043         .suspend        = rtl8169_suspend,
3044         .resume         = rtl8169_resume,
3045 #endif
3046 };
3047
3048 static int __init rtl8169_init_module(void)
3049 {
3050         return pci_register_driver(&rtl8169_pci_driver);
3051 }
3052
3053 static void __exit rtl8169_cleanup_module(void)
3054 {
3055         pci_unregister_driver(&rtl8169_pci_driver);
3056 }
3057
3058 module_init(rtl8169_init_module);
3059 module_exit(rtl8169_cleanup_module);