drivers/net/wireless/wl12xx/boot.c

   1 /*
   2  * This file is part of wl1271
   3  *
   4  * Copyright (C) 2008-2010 Nokia Corporation
   5  *
   6  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * version 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  20  * 02110-1301 USA
  21  *
  22  */
  23
  24 #include <linux/slab.h>
  25 #include <linux/wl12xx.h>
  26
  27 #include "acx.h"
  28 #include "reg.h"
  29 #include "boot.h"
  30 #include "io.h"
  31 #include "event.h"
  32 #include "rx.h"
  33
  34 static struct wl1271_partition_set part_table[PART_TABLE_LEN] = {
  35         [PART_DOWN] = {
  36                 .mem = {
  37                         .start = 0x00000000,
  38                         .size  = 0x000177c0
  39                 },
  40                 .reg = {
  41                         .start = REGISTERS_BASE,
  42                         .size  = 0x00008800
  43                 },
  44                 .mem2 = {
  45                         .start = 0x00000000,
  46                         .size  = 0x00000000
  47                 },
  48                 .mem3 = {
  49                         .start = 0x00000000,
  50                         .size  = 0x00000000
  51                 },
  52         },
  53
  54         [PART_WORK] = {
  55                 .mem = {
  56                         .start = 0x00040000,
  57                         .size  = 0x00014fc0
  58                 },
  59                 .reg = {
  60                         .start = REGISTERS_BASE,
  61                         .size  = 0x0000a000
  62                 },
  63                 .mem2 = {
  64                         .start = 0x003004f8,
  65                         .size  = 0x00000004
  66                 },
  67                 .mem3 = {
  68                         .start = 0x00040404,
  69                         .size  = 0x00000000
  70                 },
  71         },
  72
  73         [PART_DRPW] = {
  74                 .mem = {
  75                         .start = 0x00040000,
  76                         .size  = 0x00014fc0
  77                 },
  78                 .reg = {
  79                         .start = DRPW_BASE,
  80                         .size  = 0x00006000
  81                 },
  82                 .mem2 = {
  83                         .start = 0x00000000,
  84                         .size  = 0x00000000
  85                 },
  86                 .mem3 = {
  87                         .start = 0x00000000,
  88                         .size  = 0x00000000
  89                 }
  90         }
  91 };
  92
  93 static void wl1271_boot_set_ecpu_ctrl(struct wl1271 *wl, u32 flag)
  94 {
  95         u32 cpu_ctrl;
  96
  97         /* 10.5.0 run the firmware (I) */
  98         cpu_ctrl = wl1271_read32(wl, ACX_REG_ECPU_CONTROL);
  99
 100         /* 10.5.1 run the firmware (II) */
 101         cpu_ctrl |= flag;
 102         wl1271_write32(wl, ACX_REG_ECPU_CONTROL, cpu_ctrl);
 103 }
 104
 105 static void wl1271_parse_fw_ver(struct wl1271 *wl)
 106 {
 107         int ret;
 108
 109         ret = sscanf(wl->chip.fw_ver_str + 4, "%u.%u.%u.%u.%u",
 110                      &wl->chip.fw_ver[0], &wl->chip.fw_ver[1],
 111                      &wl->chip.fw_ver[2], &wl->chip.fw_ver[3],
 112                      &wl->chip.fw_ver[4]);
 113
 114         if (ret != 5) {
 115                 wl1271_warning("fw version incorrect value");
 116                 memset(wl->chip.fw_ver, 0, sizeof(wl->chip.fw_ver));
 117                 return;
 118         }
 119 }
 120
 121 static void wl1271_boot_fw_version(struct wl1271 *wl)
 122 {
 123         struct wl1271_static_data static_data;
 124
 125         wl1271_read(wl, wl->cmd_box_addr, &static_data, sizeof(static_data),
 126                     false);
 127
 128         strncpy(wl->chip.fw_ver_str, static_data.fw_version,
 129                 sizeof(wl->chip.fw_ver_str));
 130
 131         /* make sure the string is NULL-terminated */
 132         wl->chip.fw_ver_str[sizeof(wl->chip.fw_ver_str) - 1] = '\0';
 133
 134         wl1271_parse_fw_ver(wl);
 135 }
 136
 137 static int wl1271_boot_upload_firmware_chunk(struct wl1271 *wl, void *buf,
 138                                              size_t fw_data_len, u32 dest)
 139 {
 140         struct wl1271_partition_set partition;
 141         int addr, chunk_num, partition_limit;
 142         u8 *p, *chunk;
 143
 144         /* whal_FwCtrl_LoadFwImageSm() */
 145
 146         wl1271_debug(DEBUG_BOOT, "starting firmware upload");
 147
 148         wl1271_debug(DEBUG_BOOT, "fw_data_len %zd chunk_size %d",
 149                      fw_data_len, CHUNK_SIZE);
 150
 151         if ((fw_data_len % 4) != 0) {
 152                 wl1271_error("firmware length not multiple of four");
 153                 return -EIO;
 154         }
 155
 156         chunk = kmalloc(CHUNK_SIZE, GFP_KERNEL);
 157         if (!chunk) {
 158                 wl1271_error("allocation for firmware upload chunk failed");
 159                 return -ENOMEM;
 160         }
 161
 162         memcpy(&partition, &part_table[PART_DOWN], sizeof(partition));
 163         partition.mem.start = dest;
 164         wl1271_set_partition(wl, &partition);
 165
 166         /* 10.1 set partition limit and chunk num */
 167         chunk_num = 0;
 168         partition_limit = part_table[PART_DOWN].mem.size;
 169
 170         while (chunk_num < fw_data_len / CHUNK_SIZE) {
 171                 /* 10.2 update partition, if needed */
 172                 addr = dest + (chunk_num + 2) * CHUNK_SIZE;
 173                 if (addr > partition_limit) {
 174                         addr = dest + chunk_num * CHUNK_SIZE;
 175                         partition_limit = chunk_num * CHUNK_SIZE +
 176                                 part_table[PART_DOWN].mem.size;
 177                         partition.mem.start = addr;
 178                         wl1271_set_partition(wl, &partition);
 179                 }
 180
 181                 /* 10.3 upload the chunk */
 182                 addr = dest + chunk_num * CHUNK_SIZE;
 183                 p = buf + chunk_num * CHUNK_SIZE;
 184                 memcpy(chunk, p, CHUNK_SIZE);
 185                 wl1271_debug(DEBUG_BOOT, "uploading fw chunk 0x%p to 0x%x",
 186                              p, addr);
 187                 wl1271_write(wl, addr, chunk, CHUNK_SIZE, false);
 188
 189                 chunk_num++;
 190         }
 191
 192         /* 10.4 upload the last chunk */
 193         addr = dest + chunk_num * CHUNK_SIZE;
 194         p = buf + chunk_num * CHUNK_SIZE;
 195         memcpy(chunk, p, fw_data_len % CHUNK_SIZE);
 196         wl1271_debug(DEBUG_BOOT, "uploading fw last chunk (%zd B) 0x%p to 0x%x",
 197                      fw_data_len % CHUNK_SIZE, p, addr);
 198         wl1271_write(wl, addr, chunk, fw_data_len % CHUNK_SIZE, false);
 199
 200         kfree(chunk);
 201         return 0;
 202 }
 203
 204 static int wl1271_boot_upload_firmware(struct wl1271 *wl)
 205 {
 206         u32 chunks, addr, len;
 207         int ret = 0;
 208         u8 *fw;
 209
 210         fw = wl->fw;
 211         chunks = be32_to_cpup((__be32 *) fw);
 212         fw += sizeof(u32);
 213
 214         wl1271_debug(DEBUG_BOOT, "firmware chunks to be uploaded: %u", chunks);
 215
 216         while (chunks--) {
 217                 addr = be32_to_cpup((__be32 *) fw);
 218                 fw += sizeof(u32);
 219                 len = be32_to_cpup((__be32 *) fw);
 220                 fw += sizeof(u32);
 221
 222                 if (len > 300000) {
 223                         wl1271_info("firmware chunk too long: %u", len);
 224                         return -EINVAL;
 225                 }
 226                 wl1271_debug(DEBUG_BOOT, "chunk %d addr 0x%x len %u",
 227                              chunks, addr, len);
 228                 ret = wl1271_boot_upload_firmware_chunk(wl, fw, len, addr);
 229                 if (ret != 0)
 230                         break;
 231                 fw += len;
 232         }
 233
 234         return ret;
 235 }
 236
 237 static int wl1271_boot_upload_nvs(struct wl1271 *wl)
 238 {
 239         size_t nvs_len, burst_len;
 240         int i;
 241         u32 dest_addr, val;
 242         u8 *nvs_ptr, *nvs_aligned;
 243
 244         if (wl->nvs == NULL)
 245                 return -ENODEV;
 246
 247         if (wl->chip.id == CHIP_ID_1283_PG20) {
 248                 struct wl128x_nvs_file *nvs = (struct wl128x_nvs_file *)wl->nvs;
 249
 250                 if (wl->nvs_len == sizeof(struct wl128x_nvs_file)) {
 251                         if (nvs->general_params.dual_mode_select)
 252                                 wl->enable_11a = true;
 253                 } else {
 254                         wl1271_error("nvs size is not as expected: %zu != %zu",
 255                                      wl->nvs_len,
 256                                      sizeof(struct wl128x_nvs_file));
 257                         kfree(wl->nvs);
 258                         wl->nvs = NULL;
 259                         wl->nvs_len = 0;
 260                         return -EILSEQ;
 261                 }
 262
 263                 /* only the first part of the NVS needs to be uploaded */
 264                 nvs_len = sizeof(nvs->nvs);
 265                 nvs_ptr = (u8 *)nvs->nvs;
 266
 267         } else {
 268                 struct wl1271_nvs_file *nvs =
 269                         (struct wl1271_nvs_file *)wl->nvs;
 270                 /*
 271                  * FIXME: the LEGACY NVS image support (NVS's missing the 5GHz
 272                  * band configurations) can be removed when those NVS files stop
 273                  * floating around.
 274                  */
 275                 if (wl->nvs_len == sizeof(struct wl1271_nvs_file) ||
 276                     wl->nvs_len == WL1271_INI_LEGACY_NVS_FILE_SIZE) {
 277                         /* for now 11a is unsupported in AP mode */
 278                         if (wl->bss_type != BSS_TYPE_AP_BSS &&
 279                             nvs->general_params.dual_mode_select)
 280                                 wl->enable_11a = true;
 281                 }
 282
 283                 if (wl->nvs_len != sizeof(struct wl1271_nvs_file) &&
 284                     (wl->nvs_len != WL1271_INI_LEGACY_NVS_FILE_SIZE ||
 285                      wl->enable_11a)) {
 286                         wl1271_error("nvs size is not as expected: %zu != %zu",
 287                                 wl->nvs_len, sizeof(struct wl1271_nvs_file));
 288                         kfree(wl->nvs);
 289                         wl->nvs = NULL;
 290                         wl->nvs_len = 0;
 291                         return -EILSEQ;
 292                 }
 293
 294                 /* only the first part of the NVS needs to be uploaded */
 295                 nvs_len = sizeof(nvs->nvs);
 296                 nvs_ptr = (u8 *) nvs->nvs;
 297         }
 298
 299         /* update current MAC address to NVS */
 300         nvs_ptr[11] = wl->mac_addr[0];
 301         nvs_ptr[10] = wl->mac_addr[1];
 302         nvs_ptr[6] = wl->mac_addr[2];
 303         nvs_ptr[5] = wl->mac_addr[3];
 304         nvs_ptr[4] = wl->mac_addr[4];
 305         nvs_ptr[3] = wl->mac_addr[5];
 306
 307         /*
 308          * Layout before the actual NVS tables:
 309          * 1 byte : burst length.
 310          * 2 bytes: destination address.
 311          * n bytes: data to burst copy.
 312          *
 313          * This is ended by a 0 length, then the NVS tables.
 314          */
 315
 316         /* FIXME: Do we need to check here whether the LSB is 1? */
 317         while (nvs_ptr[0]) {
 318                 burst_len = nvs_ptr[0];
 319                 dest_addr = (nvs_ptr[1] & 0xfe) | ((u32)(nvs_ptr[2] << 8));
 320
 321                 /*
 322                  * Due to our new wl1271_translate_reg_addr function,
 323                  * we need to add the REGISTER_BASE to the destination
 324                  */
 325                 dest_addr += REGISTERS_BASE;
 326
 327                 /* We move our pointer to the data */
 328                 nvs_ptr += 3;
 329
 330                 for (i = 0; i < burst_len; i++) {
 331                         val = (nvs_ptr[0] | (nvs_ptr[1] << 8)
 332                                | (nvs_ptr[2] << 16) | (nvs_ptr[3] << 24));
 333
 334                         wl1271_debug(DEBUG_BOOT,
 335                                      "nvs burst write 0x%x: 0x%x",
 336                                      dest_addr, val);
 337                         wl1271_write32(wl, dest_addr, val);
 338
 339                         nvs_ptr += 4;
 340                         dest_addr += 4;
 341                 }
 342         }
 343
 344         /*
 345          * We've reached the first zero length, the first NVS table
 346          * is located at an aligned offset which is at least 7 bytes further.
 347          * NOTE: The wl->nvs->nvs element must be first, in order to
 348          * simplify the casting, we assume it is at the beginning of
 349          * the wl->nvs structure.
 350          */
 351         nvs_ptr = (u8 *)wl->nvs +
 352                         ALIGN(nvs_ptr - (u8 *)wl->nvs + 7, 4);
 353         nvs_len -= nvs_ptr - (u8 *)wl->nvs;
 354
 355         /* Now we must set the partition correctly */
 356         wl1271_set_partition(wl, &part_table[PART_WORK]);
 357
 358         /* Copy the NVS tables to a new block to ensure alignment */
 359         nvs_aligned = kmemdup(nvs_ptr, nvs_len, GFP_KERNEL);
 360         if (!nvs_aligned)
 361                 return -ENOMEM;
 362
 363         /* And finally we upload the NVS tables */
 364         wl1271_write(wl, CMD_MBOX_ADDRESS, nvs_aligned, nvs_len, false);
 365
 366         kfree(nvs_aligned);
 367         return 0;
 368 }
 369
 370 static void wl1271_boot_enable_interrupts(struct wl1271 *wl)
 371 {
 372         wl1271_enable_interrupts(wl);
 373         wl1271_write32(wl, ACX_REG_INTERRUPT_MASK,
 374                        WL1271_ACX_INTR_ALL & ~(WL1271_INTR_MASK));
 375         wl1271_write32(wl, HI_CFG, HI_CFG_DEF_VAL);
 376 }
 377
 378 static int wl1271_boot_soft_reset(struct wl1271 *wl)
 379 {
 380         unsigned long timeout;
 381         u32 boot_data;
 382
 383         /* perform soft reset */
 384         wl1271_write32(wl, ACX_REG_SLV_SOFT_RESET, ACX_SLV_SOFT_RESET_BIT);
 385
 386         /* SOFT_RESET is self clearing */
 387         timeout = jiffies + usecs_to_jiffies(SOFT_RESET_MAX_TIME);
 388         while (1) {
 389                 boot_data = wl1271_read32(wl, ACX_REG_SLV_SOFT_RESET);
 390                 wl1271_debug(DEBUG_BOOT, "soft reset bootdata 0x%x", boot_data);
 391                 if ((boot_data & ACX_SLV_SOFT_RESET_BIT) == 0)
 392                         break;
 393
 394                 if (time_after(jiffies, timeout)) {
 395                         /* 1.2 check pWhalBus->uSelfClearTime if the
 396                          * timeout was reached */
 397                         wl1271_error("soft reset timeout");
 398                         return -1;
 399                 }
 400
 401                 udelay(SOFT_RESET_STALL_TIME);
 402         }
 403
 404         /* disable Rx/Tx */
 405         wl1271_write32(wl, ENABLE, 0x0);
 406
 407         /* disable auto calibration on start*/
 408         wl1271_write32(wl, SPARE_A2, 0xffff);
 409
 410         return 0;
 411 }
 412
 413 static int wl1271_boot_run_firmware(struct wl1271 *wl)
 414 {
 415         int loop, ret;
 416         u32 chip_id, intr;
 417
 418         wl1271_boot_set_ecpu_ctrl(wl, ECPU_CONTROL_HALT);
 419
 420         chip_id = wl1271_read32(wl, CHIP_ID_B);
 421
 422         wl1271_debug(DEBUG_BOOT, "chip id after firmware boot: 0x%x", chip_id);
 423
 424         if (chip_id != wl->chip.id) {
 425                 wl1271_error("chip id doesn't match after firmware boot");
 426                 return -EIO;
 427         }
 428
 429         /* wait for init to complete */
 430         loop = 0;
 431         while (loop++ < INIT_LOOP) {
 432                 udelay(INIT_LOOP_DELAY);
 433                 intr = wl1271_read32(wl, ACX_REG_INTERRUPT_NO_CLEAR);
 434
 435                 if (intr == 0xffffffff) {
 436                         wl1271_error("error reading hardware complete "
 437                                      "init indication");
 438                         return -EIO;
 439                 }
 440                 /* check that ACX_INTR_INIT_COMPLETE is enabled */
 441                 else if (intr & WL1271_ACX_INTR_INIT_COMPLETE) {
 442                         wl1271_write32(wl, ACX_REG_INTERRUPT_ACK,
 443                                        WL1271_ACX_INTR_INIT_COMPLETE);
 444                         break;
 445                 }
 446         }
 447
 448         if (loop > INIT_LOOP) {
 449                 wl1271_error("timeout waiting for the hardware to "
 450                              "complete initialization");
 451                 return -EIO;
 452         }
 453
 454         /* get hardware config command mail box */
 455         wl->cmd_box_addr = wl1271_read32(wl, REG_COMMAND_MAILBOX_PTR);
 456
 457         /* get hardware config event mail box */
 458         wl->event_box_addr = wl1271_read32(wl, REG_EVENT_MAILBOX_PTR);
 459
 460         /* set the working partition to its "running" mode offset */
 461         wl1271_set_partition(wl, &part_table[PART_WORK]);
 462
 463         wl1271_debug(DEBUG_MAILBOX, "cmd_box_addr 0x%x event_box_addr 0x%x",
 464                      wl->cmd_box_addr, wl->event_box_addr);
 465
 466         wl1271_boot_fw_version(wl);
 467
 468         /*
 469          * in case of full asynchronous mode the firmware event must be
 470          * ready to receive event from the command mailbox
 471          */
 472
 473         /* unmask required mbox events  */
 474         wl->event_mask = BSS_LOSE_EVENT_ID |
 475                 SCAN_COMPLETE_EVENT_ID |
 476                 PS_REPORT_EVENT_ID |
 477                 JOIN_EVENT_COMPLETE_ID |
 478                 DISCONNECT_EVENT_COMPLETE_ID |
 479                 RSSI_SNR_TRIGGER_0_EVENT_ID |
 480                 PSPOLL_DELIVERY_FAILURE_EVENT_ID |
 481                 SOFT_GEMINI_SENSE_EVENT_ID |
 482                 PERIODIC_SCAN_REPORT_EVENT_ID |
 483                 PERIODIC_SCAN_COMPLETE_EVENT_ID;
 484
 485         if (wl->bss_type == BSS_TYPE_AP_BSS)
 486                 wl->event_mask |= STA_REMOVE_COMPLETE_EVENT_ID;
 487         else
 488                 wl->event_mask |= DUMMY_PACKET_EVENT_ID;
 489
 490         ret = wl1271_event_unmask(wl);
 491         if (ret < 0) {
 492                 wl1271_error("EVENT mask setting failed");
 493                 return ret;
 494         }
 495
 496         wl1271_event_mbox_config(wl);
 497
 498         /* firmware startup completed */
 499         return 0;
 500 }
 501
 502 static int wl1271_boot_write_irq_polarity(struct wl1271 *wl)
 503 {
 504         u32 polarity;
 505
 506         polarity = wl1271_top_reg_read(wl, OCP_REG_POLARITY);
 507
 508         /* We use HIGH polarity, so unset the LOW bit */
 509         polarity &= ~POLARITY_LOW;
 510         wl1271_top_reg_write(wl, OCP_REG_POLARITY, polarity);
 511
 512         return 0;
 513 }
 514
 515 static void wl1271_boot_hw_version(struct wl1271 *wl)
 516 {
 517         u32 fuse;
 518
 519         fuse = wl1271_top_reg_read(wl, REG_FUSE_DATA_2_1);
 520         fuse = (fuse & PG_VER_MASK) >> PG_VER_OFFSET;
 521
 522         wl->hw_pg_ver = (s8)fuse;
 523
 524         if (((wl->hw_pg_ver & PG_MAJOR_VER_MASK) >> PG_MAJOR_VER_OFFSET) < 3)
 525                 wl->quirks |= WL12XX_QUIRK_END_OF_TRANSACTION;
 526 }
 527
 528 static int wl128x_switch_tcxo_to_fref(struct wl1271 *wl)
 529 {
 530         u16 spare_reg;
 531
 532         /* Mask bits [2] & [8:4] in the sys_clk_cfg register */
 533         spare_reg = wl1271_top_reg_read(wl, WL_SPARE_REG);
 534         if (spare_reg == 0xFFFF)
 535                 return -EFAULT;
 536         spare_reg |= (BIT(3) | BIT(5) | BIT(6));
 537         wl1271_top_reg_write(wl, WL_SPARE_REG, spare_reg);
 538
 539         /* Enable FREF_CLK_REQ & mux MCS and coex PLLs to FREF */
 540         wl1271_top_reg_write(wl, SYS_CLK_CFG_REG,
 541                              WL_CLK_REQ_TYPE_PG2 | MCS_PLL_CLK_SEL_FREF);
 542
 543         /* Delay execution for 15msec, to let the HW settle */
 544         mdelay(15);
 545
 546         return 0;
 547 }
 548
 549 static bool wl128x_is_tcxo_valid(struct wl1271 *wl)
 550 {
 551         u16 tcxo_detection;
 552
 553         tcxo_detection = wl1271_top_reg_read(wl, TCXO_CLK_DETECT_REG);
 554         if (tcxo_detection & TCXO_DET_FAILED)
 555                 return false;
 556
 557         return true;
 558 }
 559
 560 static bool wl128x_is_fref_valid(struct wl1271 *wl)
 561 {
 562         u16 fref_detection;
 563
 564         fref_detection = wl1271_top_reg_read(wl, FREF_CLK_DETECT_REG);
 565         if (fref_detection & FREF_CLK_DETECT_FAIL)
 566                 return false;
 567
 568         return true;
 569 }
 570
 571 static int wl128x_manually_configure_mcs_pll(struct wl1271 *wl)
 572 {
 573         wl1271_top_reg_write(wl, MCS_PLL_M_REG, MCS_PLL_M_REG_VAL);
 574         wl1271_top_reg_write(wl, MCS_PLL_N_REG, MCS_PLL_N_REG_VAL);
 575         wl1271_top_reg_write(wl, MCS_PLL_CONFIG_REG, MCS_PLL_CONFIG_REG_VAL);
 576
 577         return 0;
 578 }
 579
 580 static int wl128x_configure_mcs_pll(struct wl1271 *wl, int clk)
 581 {
 582         u16 spare_reg;
 583         u16 pll_config;
 584         u8 input_freq;
 585
 586         /* Mask bits [3:1] in the sys_clk_cfg register */
 587         spare_reg = wl1271_top_reg_read(wl, WL_SPARE_REG);
 588         if (spare_reg == 0xFFFF)
 589                 return -EFAULT;
 590         spare_reg |= BIT(2);
 591         wl1271_top_reg_write(wl, WL_SPARE_REG, spare_reg);
 592
 593         /* Handle special cases of the TCXO clock */
 594         if (wl->tcxo_clock == WL12XX_TCXOCLOCK_16_8 ||
 595             wl->tcxo_clock == WL12XX_TCXOCLOCK_33_6)
 596                 return wl128x_manually_configure_mcs_pll(wl);
 597
 598         /* Set the input frequency according to the selected clock source */
 599         input_freq = (clk & 1) + 1;
 600
 601         pll_config = wl1271_top_reg_read(wl, MCS_PLL_CONFIG_REG);
 602         if (pll_config == 0xFFFF)
 603                 return -EFAULT;
 604         pll_config |= (input_freq << MCS_SEL_IN_FREQ_SHIFT);
 605         pll_config |= MCS_PLL_ENABLE_HP;
 606         wl1271_top_reg_write(wl, MCS_PLL_CONFIG_REG, pll_config);
 607
 608         return 0;
 609 }
 610
 611 /*
 612  * WL128x has two clocks input - TCXO and FREF.
 613  * TCXO is the main clock of the device, while FREF is used to sync
 614  * between the GPS and the cellular modem.
 615  * In cases where TCXO is 32.736MHz or 16.368MHz, the FREF will be used
 616  * as the WLAN/BT main clock.
 617  */
 618 static int wl128x_boot_clk(struct wl1271 *wl, int *selected_clock)
 619 {
 620         u16 sys_clk_cfg;
 621
 622         /* For XTAL-only modes, FREF will be used after switching from TCXO */
 623         if (wl->ref_clock == WL12XX_REFCLOCK_26_XTAL ||
 624             wl->ref_clock == WL12XX_REFCLOCK_38_XTAL) {
 625                 if (!wl128x_switch_tcxo_to_fref(wl))
 626                         return -EINVAL;
 627                 goto fref_clk;
 628         }
 629
 630         /* Query the HW, to determine which clock source we should use */
 631         sys_clk_cfg = wl1271_top_reg_read(wl, SYS_CLK_CFG_REG);
 632         if (sys_clk_cfg == 0xFFFF)
 633                 return -EINVAL;
 634         if (sys_clk_cfg & PRCM_CM_EN_MUX_WLAN_FREF)
 635                 goto fref_clk;
 636
 637         /* If TCXO is either 32.736MHz or 16.368MHz, switch to FREF */
 638         if (wl->tcxo_clock == WL12XX_TCXOCLOCK_16_368 ||
 639             wl->tcxo_clock == WL12XX_TCXOCLOCK_32_736) {
 640                 if (!wl128x_switch_tcxo_to_fref(wl))
 641                         return -EINVAL;
 642                 goto fref_clk;
 643         }
 644
 645         /* TCXO clock is selected */
 646         if (!wl128x_is_tcxo_valid(wl))
 647                 return -EINVAL;
 648         *selected_clock = wl->tcxo_clock;
 649         goto config_mcs_pll;
 650
 651 fref_clk:
 652         /* FREF clock is selected */
 653         if (!wl128x_is_fref_valid(wl))
 654                 return -EINVAL;
 655         *selected_clock = wl->ref_clock;
 656
 657 config_mcs_pll:
 658         return wl128x_configure_mcs_pll(wl, *selected_clock);
 659 }
 660
 661 static int wl127x_boot_clk(struct wl1271 *wl)
 662 {
 663         u32 pause;
 664         u32 clk;
 665
 666         wl1271_boot_hw_version(wl);
 667
 668         if (wl->ref_clock == CONF_REF_CLK_19_2_E ||
 669             wl->ref_clock == CONF_REF_CLK_38_4_E ||
 670             wl->ref_clock == CONF_REF_CLK_38_4_M_XTAL)
 671                 /* ref clk: 19.2/38.4/38.4-XTAL */
 672                 clk = 0x3;
 673         else if (wl->ref_clock == CONF_REF_CLK_26_E ||
 674                  wl->ref_clock == CONF_REF_CLK_52_E)
 675                 /* ref clk: 26/52 */
 676                 clk = 0x5;
 677         else
 678                 return -EINVAL;
 679
 680         if (wl->ref_clock != CONF_REF_CLK_19_2_E) {
 681                 u16 val;
 682                 /* Set clock type (open drain) */
 683                 val = wl1271_top_reg_read(wl, OCP_REG_CLK_TYPE);
 684                 val &= FREF_CLK_TYPE_BITS;
 685                 wl1271_top_reg_write(wl, OCP_REG_CLK_TYPE, val);
 686
 687                 /* Set clock pull mode (no pull) */
 688                 val = wl1271_top_reg_read(wl, OCP_REG_CLK_PULL);
 689                 val |= NO_PULL;
 690                 wl1271_top_reg_write(wl, OCP_REG_CLK_PULL, val);
 691         } else {
 692                 u16 val;
 693                 /* Set clock polarity */
 694                 val = wl1271_top_reg_read(wl, OCP_REG_CLK_POLARITY);
 695                 val &= FREF_CLK_POLARITY_BITS;
 696                 val |= CLK_REQ_OUTN_SEL;
 697                 wl1271_top_reg_write(wl, OCP_REG_CLK_POLARITY, val);
 698         }
 699
 700         wl1271_write32(wl, PLL_PARAMETERS, clk);
 701
 702         pause = wl1271_read32(wl, PLL_PARAMETERS);
 703
 704         wl1271_debug(DEBUG_BOOT, "pause1 0x%x", pause);
 705
 706         pause &= ~(WU_COUNTER_PAUSE_VAL);
 707         pause |= WU_COUNTER_PAUSE_VAL;
 708         wl1271_write32(wl, WU_COUNTER_PAUSE, pause);
 709
 710         return 0;
 711 }
 712
 713 /* uploads NVS and firmware */
 714 int wl1271_load_firmware(struct wl1271 *wl)
 715 {
 716         int ret = 0;
 717         u32 tmp, clk;
 718         int selected_clock = -1;
 719
 720         if (wl->chip.id == CHIP_ID_1283_PG20) {
 721                 ret = wl128x_boot_clk(wl, &selected_clock);
 722                 if (ret < 0)
 723                         goto out;
 724         } else {
 725                 ret = wl127x_boot_clk(wl);
 726                 if (ret < 0)
 727                         goto out;
 728         }
 729
 730         /* Continue the ELP wake up sequence */
 731         wl1271_write32(wl, WELP_ARM_COMMAND, WELP_ARM_COMMAND_VAL);
 732         udelay(500);
 733
 734         wl1271_set_partition(wl, &part_table[PART_DRPW]);
 735
 736         /* Read-modify-write DRPW_SCRATCH_START register (see next state)
 737            to be used by DRPw FW. The RTRIM value will be added by the FW
 738            before taking DRPw out of reset */
 739
 740         wl1271_debug(DEBUG_BOOT, "DRPW_SCRATCH_START %08x", DRPW_SCRATCH_START);
 741         clk = wl1271_read32(wl, DRPW_SCRATCH_START);
 742
 743         wl1271_debug(DEBUG_BOOT, "clk2 0x%x", clk);
 744
 745         if (wl->chip.id == CHIP_ID_1283_PG20) {
 746                 clk |= ((selected_clock & 0x3) << 1) << 4;
 747         } else {
 748                 clk |= (wl->ref_clock << 1) << 4;
 749         }
 750
 751         wl1271_write32(wl, DRPW_SCRATCH_START, clk);
 752
 753         wl1271_set_partition(wl, &part_table[PART_WORK]);
 754
 755         /* Disable interrupts */
 756         wl1271_write32(wl, ACX_REG_INTERRUPT_MASK, WL1271_ACX_INTR_ALL);
 757
 758         ret = wl1271_boot_soft_reset(wl);
 759         if (ret < 0)
 760                 goto out;
 761
 762         /* 2. start processing NVS file */
 763         ret = wl1271_boot_upload_nvs(wl);
 764         if (ret < 0)
 765                 goto out;
 766
 767         /* write firmware's last address (ie. it's length) to
 768          * ACX_EEPROMLESS_IND_REG */
 769         wl1271_debug(DEBUG_BOOT, "ACX_EEPROMLESS_IND_REG");
 770
 771         wl1271_write32(wl, ACX_EEPROMLESS_IND_REG, ACX_EEPROMLESS_IND_REG);
 772
 773         tmp = wl1271_read32(wl, CHIP_ID_B);
 774
 775         wl1271_debug(DEBUG_BOOT, "chip id 0x%x", tmp);
 776
 777         /* 6. read the EEPROM parameters */
 778         tmp = wl1271_read32(wl, SCR_PAD2);
 779
 780         /* WL1271: The reference driver skips steps 7 to 10 (jumps directly
 781          * to upload_fw) */
 782
 783         if (wl->chip.id == CHIP_ID_1283_PG20)
 784                 wl1271_top_reg_write(wl, SDIO_IO_DS, wl->conf.hci_io_ds);
 785
 786         ret = wl1271_boot_upload_firmware(wl);
 787         if (ret < 0)
 788                 goto out;
 789
 790 out:
 791         return ret;
 792 }
 793 EXPORT_SYMBOL_GPL(wl1271_load_firmware);
 794
 795 int wl1271_boot(struct wl1271 *wl)
 796 {
 797         int ret;
 798
 799         /* upload NVS and firmware */
 800         ret = wl1271_load_firmware(wl);
 801         if (ret)
 802                 return ret;
 803
 804         /* 10.5 start firmware */
 805         ret = wl1271_boot_run_firmware(wl);
 806         if (ret < 0)
 807                 goto out;
 808
 809         ret = wl1271_boot_write_irq_polarity(wl);
 810         if (ret < 0)
 811                 goto out;
 812
 813         wl1271_write32(wl, ACX_REG_INTERRUPT_MASK,
 814                        WL1271_ACX_ALL_EVENTS_VECTOR);
 815
 816         /* Enable firmware interrupts now */
 817         wl1271_boot_enable_interrupts(wl);
 818
 819         /* set the wl1271 default filters */
 820         wl1271_set_default_filters(wl);
 821
 822         wl1271_event_mbox_config(wl);
 823
 824 out:
 825         return ret;
 826 }