drivers/bluetooth/ath3k.c

   1 /*
   2  * Copyright (c) 2008-2009 Atheros Communications Inc.
   3  *
   4  *  This program is free software; you can redistribute it and/or modify
   5  *  it under the terms of the GNU General Public License as published by
   6  *  the Free Software Foundation; either version 2 of the License, or
   7  *  (at your option) any later version.
   8  *
   9  *  This program is distributed in the hope that it will be useful,
  10  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *  GNU General Public License for more details.
  13  *
  14  *  You should have received a copy of the GNU General Public License
  15  *  along with this program; if not, write to the Free Software
  16  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  *
  18  */
  19
  20
  21 #include <linux/module.h>
  22 #include <linux/kernel.h>
  23 #include <linux/init.h>
  24 #include <linux/slab.h>
  25 #include <linux/types.h>
  26 #include <linux/errno.h>
  27 #include <linux/device.h>
  28 #include <linux/firmware.h>
  29 #include <linux/usb.h>
  30 #include <net/bluetooth/bluetooth.h>
  31
  32 #define VERSION "1.0"
  33 #define ATH3K_FIRMWARE  "ath3k-1.fw"
  34
  35 #define ATH3K_DNLOAD                            0x01
  36 #define ATH3K_GETSTATE                          0x05
  37 #define ATH3K_SET_NORMAL_MODE                   0x07
  38 #define ATH3K_GETVERSION                        0x09
  39 #define USB_REG_SWITCH_VID_PID                  0x0a
  40
  41 #define ATH3K_MODE_MASK                         0x3F
  42 #define ATH3K_NORMAL_MODE                       0x0E
  43
  44 #define ATH3K_PATCH_UPDATE                      0x80
  45 #define ATH3K_SYSCFG_UPDATE                     0x40
  46
  47 #define ATH3K_XTAL_FREQ_26M                     0x00
  48 #define ATH3K_XTAL_FREQ_40M                     0x01
  49 #define ATH3K_XTAL_FREQ_19P2                    0x02
  50 #define ATH3K_NAME_LEN                          0xFF
  51
  52 struct ath3k_version {
  53         unsigned int    rom_version;
  54         unsigned int    build_version;
  55         unsigned int    ram_version;
  56         unsigned char   ref_clock;
  57         unsigned char   reserved[0x07];
  58 };
  59
  60 static const struct usb_device_id ath3k_table[] = {
  61         /* Atheros AR3011 */
  62         { USB_DEVICE(0x0CF3, 0x3000) },
  63
  64         /* Atheros AR3011 with sflash firmware*/
  65         { USB_DEVICE(0x0489, 0xE027) },
  66         { USB_DEVICE(0x0489, 0xE03D) },
  67         { USB_DEVICE(0x0930, 0x0215) },
  68         { USB_DEVICE(0x0CF3, 0x3002) },
  69         { USB_DEVICE(0x0CF3, 0xE019) },
  70         { USB_DEVICE(0x13d3, 0x3304) },
  71
  72         /* Atheros AR9285 Malbec with sflash firmware */
  73         { USB_DEVICE(0x03F0, 0x311D) },
  74
  75         /* Atheros AR3012 with sflash firmware*/
  76         { USB_DEVICE(0x0489, 0xe04d) },
  77         { USB_DEVICE(0x0489, 0xe04e) },
  78         { USB_DEVICE(0x0489, 0xe057) },
  79         { USB_DEVICE(0x0489, 0xe056) },
  80         { USB_DEVICE(0x0489, 0xe05f) },
  81         { USB_DEVICE(0x04c5, 0x1330) },
  82         { USB_DEVICE(0x04CA, 0x3004) },
  83         { USB_DEVICE(0x04CA, 0x3005) },
  84         { USB_DEVICE(0x04CA, 0x3006) },
  85         { USB_DEVICE(0x04CA, 0x3008) },
  86         { USB_DEVICE(0x04CA, 0x300b) },
  87         { USB_DEVICE(0x0930, 0x0219) },
  88         { USB_DEVICE(0x0930, 0x0220) },
  89         { USB_DEVICE(0x0b05, 0x17d0) },
  90         { USB_DEVICE(0x0CF3, 0x0036) },
  91         { USB_DEVICE(0x0CF3, 0x3004) },
  92         { USB_DEVICE(0x0CF3, 0x3005) },
  93         { USB_DEVICE(0x0CF3, 0x3008) },
  94         { USB_DEVICE(0x0CF3, 0x311D) },
  95         { USB_DEVICE(0x0CF3, 0x311E) },
  96         { USB_DEVICE(0x0CF3, 0x311F) },
  97         { USB_DEVICE(0x0cf3, 0x3121) },
  98         { USB_DEVICE(0x0CF3, 0x817a) },
  99         { USB_DEVICE(0x0cf3, 0xe003) },
 100         { USB_DEVICE(0x0CF3, 0xE004) },
 101         { USB_DEVICE(0x0CF3, 0xE005) },
 102         { USB_DEVICE(0x13d3, 0x3362) },
 103         { USB_DEVICE(0x13d3, 0x3375) },
 104         { USB_DEVICE(0x13d3, 0x3393) },
 105         { USB_DEVICE(0x13d3, 0x3402) },
 106
 107         /* Atheros AR5BBU12 with sflash firmware */
 108         { USB_DEVICE(0x0489, 0xE02C) },
 109
 110         /* Atheros AR5BBU22 with sflash firmware */
 111         { USB_DEVICE(0x0489, 0xE036) },
 112         { USB_DEVICE(0x0489, 0xE03C) },
 113
 114         { }     /* Terminating entry */
 115 };
 116
 117 MODULE_DEVICE_TABLE(usb, ath3k_table);
 118
 119 #define BTUSB_ATH3012           0x80
 120 /* This table is to load patch and sysconfig files
 121  * for AR3012 */
 122 static const struct usb_device_id ath3k_blist_tbl[] = {
 123
 124         /* Atheros AR3012 with sflash firmware*/
 125         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 126         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 127         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 128         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 129         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 130         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 131         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 132         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 133         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 134         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 135         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 136         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 137         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 138         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 139         { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
 140         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x0cf3, 0x3005), .driver_info = BTUSB_ATH3012 },
 142         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 155
 156         /* Atheros AR5BBU22 with sflash firmware */
 157         { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
 159
 160         { }     /* Terminating entry */
 161 };
 162
 163 #define USB_REQ_DFU_DNLOAD      1
 164 #define BULK_SIZE               4096
 165 #define FW_HDR_SIZE             20
 166
 167 static int ath3k_load_firmware(struct usb_device *udev,
 168                                 const struct firmware *firmware)
 169 {
 170         u8 *send_buf;
 171         int err, pipe, len, size, sent = 0;
 172         int count = firmware->size;
 173
 174         BT_DBG("udev %p", udev);
 175
 176         pipe = usb_sndctrlpipe(udev, 0);
 177
 178         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 179         if (!send_buf) {
 180                 BT_ERR("Can't allocate memory chunk for firmware");
 181                 return -ENOMEM;
 182         }
 183
 184         memcpy(send_buf, firmware->data, 20);
 185         err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
 186                               0, 0, send_buf, 20, USB_CTRL_SET_TIMEOUT);
 187         if (err < 0) {
 188                 BT_ERR("Can't change to loading configuration err");
 189                 goto error;
 190         }
 191         sent += 20;
 192         count -= 20;
 193
 194         while (count) {
 195                 size = min_t(uint, count, BULK_SIZE);
 196                 pipe = usb_sndbulkpipe(udev, 0x02);
 197                 memcpy(send_buf, firmware->data + sent, size);
 198
 199                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 200                                         &len, 3000);
 201
 202                 if (err || (len != size)) {
 203                         BT_ERR("Error in firmware loading err = %d,"
 204                                 "len = %d, size = %d", err, len, size);
 205                         goto error;
 206                 }
 207
 208                 sent  += size;
 209                 count -= size;
 210         }
 211
 212 error:
 213         kfree(send_buf);
 214         return err;
 215 }
 216
 217 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
 218 {
 219         int ret, pipe = 0;
 220         char *buf;
 221
 222         buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 223         if (!buf)
 224                 return -ENOMEM;
 225
 226         pipe = usb_rcvctrlpipe(udev, 0);
 227         ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE,
 228                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 229                               buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT);
 230
 231         *state = *buf;
 232         kfree(buf);
 233
 234         return ret;
 235 }
 236
 237 static int ath3k_get_version(struct usb_device *udev,
 238                         struct ath3k_version *version)
 239 {
 240         int ret, pipe = 0;
 241         struct ath3k_version *buf;
 242         const int size = sizeof(*buf);
 243
 244         buf = kmalloc(size, GFP_KERNEL);
 245         if (!buf)
 246                 return -ENOMEM;
 247
 248         pipe = usb_rcvctrlpipe(udev, 0);
 249         ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION,
 250                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 251                               buf, size, USB_CTRL_SET_TIMEOUT);
 252
 253         memcpy(version, buf, size);
 254         kfree(buf);
 255
 256         return ret;
 257 }
 258
 259 static int ath3k_load_fwfile(struct usb_device *udev,
 260                 const struct firmware *firmware)
 261 {
 262         u8 *send_buf;
 263         int err, pipe, len, size, count, sent = 0;
 264         int ret;
 265
 266         count = firmware->size;
 267
 268         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 269         if (!send_buf) {
 270                 BT_ERR("Can't allocate memory chunk for firmware");
 271                 return -ENOMEM;
 272         }
 273
 274         size = min_t(uint, count, FW_HDR_SIZE);
 275         memcpy(send_buf, firmware->data, size);
 276
 277         pipe = usb_sndctrlpipe(udev, 0);
 278         ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
 279                         USB_TYPE_VENDOR, 0, 0, send_buf,
 280                         size, USB_CTRL_SET_TIMEOUT);
 281         if (ret < 0) {
 282                 BT_ERR("Can't change to loading configuration err");
 283                 kfree(send_buf);
 284                 return ret;
 285         }
 286
 287         sent += size;
 288         count -= size;
 289
 290         while (count) {
 291                 size = min_t(uint, count, BULK_SIZE);
 292                 pipe = usb_sndbulkpipe(udev, 0x02);
 293
 294                 memcpy(send_buf, firmware->data + sent, size);
 295
 296                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 297                                         &len, 3000);
 298                 if (err || (len != size)) {
 299                         BT_ERR("Error in firmware loading err = %d,"
 300                                 "len = %d, size = %d", err, len, size);
 301                         kfree(send_buf);
 302                         return err;
 303                 }
 304                 sent  += size;
 305                 count -= size;
 306         }
 307
 308         kfree(send_buf);
 309         return 0;
 310 }
 311
 312 static int ath3k_switch_pid(struct usb_device *udev)
 313 {
 314         int pipe = 0;
 315
 316         pipe = usb_sndctrlpipe(udev, 0);
 317         return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
 318                         USB_TYPE_VENDOR, 0, 0,
 319                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 320 }
 321
 322 static int ath3k_set_normal_mode(struct usb_device *udev)
 323 {
 324         unsigned char fw_state;
 325         int pipe = 0, ret;
 326
 327         ret = ath3k_get_state(udev, &fw_state);
 328         if (ret < 0) {
 329                 BT_ERR("Can't get state to change to normal mode err");
 330                 return ret;
 331         }
 332
 333         if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
 334                 BT_DBG("firmware was already in normal mode");
 335                 return 0;
 336         }
 337
 338         pipe = usb_sndctrlpipe(udev, 0);
 339         return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
 340                         USB_TYPE_VENDOR, 0, 0,
 341                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 342 }
 343
 344 static int ath3k_load_patch(struct usb_device *udev)
 345 {
 346         unsigned char fw_state;
 347         char filename[ATH3K_NAME_LEN] = {0};
 348         const struct firmware *firmware;
 349         struct ath3k_version fw_version, pt_version;
 350         int ret;
 351
 352         ret = ath3k_get_state(udev, &fw_state);
 353         if (ret < 0) {
 354                 BT_ERR("Can't get state to change to load ram patch err");
 355                 return ret;
 356         }
 357
 358         if (fw_state & ATH3K_PATCH_UPDATE) {
 359                 BT_DBG("Patch was already downloaded");
 360                 return 0;
 361         }
 362
 363         ret = ath3k_get_version(udev, &fw_version);
 364         if (ret < 0) {
 365                 BT_ERR("Can't get version to change to load ram patch err");
 366                 return ret;
 367         }
 368
 369         snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
 370                 le32_to_cpu(fw_version.rom_version));
 371
 372         ret = request_firmware(&firmware, filename, &udev->dev);
 373         if (ret < 0) {
 374                 BT_ERR("Patch file not found %s", filename);
 375                 return ret;
 376         }
 377
 378         pt_version.rom_version = *(int *)(firmware->data + firmware->size - 8);
 379         pt_version.build_version = *(int *)
 380                 (firmware->data + firmware->size - 4);
 381
 382         if ((pt_version.rom_version != fw_version.rom_version) ||
 383                 (pt_version.build_version <= fw_version.build_version)) {
 384                 BT_ERR("Patch file version did not match with firmware");
 385                 release_firmware(firmware);
 386                 return -EINVAL;
 387         }
 388
 389         ret = ath3k_load_fwfile(udev, firmware);
 390         release_firmware(firmware);
 391
 392         return ret;
 393 }
 394
 395 static int ath3k_load_syscfg(struct usb_device *udev)
 396 {
 397         unsigned char fw_state;
 398         char filename[ATH3K_NAME_LEN] = {0};
 399         const struct firmware *firmware;
 400         struct ath3k_version fw_version;
 401         int clk_value, ret;
 402
 403         ret = ath3k_get_state(udev, &fw_state);
 404         if (ret < 0) {
 405                 BT_ERR("Can't get state to change to load configuration err");
 406                 return -EBUSY;
 407         }
 408
 409         ret = ath3k_get_version(udev, &fw_version);
 410         if (ret < 0) {
 411                 BT_ERR("Can't get version to change to load ram patch err");
 412                 return ret;
 413         }
 414
 415         switch (fw_version.ref_clock) {
 416
 417         case ATH3K_XTAL_FREQ_26M:
 418                 clk_value = 26;
 419                 break;
 420         case ATH3K_XTAL_FREQ_40M:
 421                 clk_value = 40;
 422                 break;
 423         case ATH3K_XTAL_FREQ_19P2:
 424                 clk_value = 19;
 425                 break;
 426         default:
 427                 clk_value = 0;
 428                 break;
 429         }
 430
 431         snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
 432                 le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
 433
 434         ret = request_firmware(&firmware, filename, &udev->dev);
 435         if (ret < 0) {
 436                 BT_ERR("Configuration file not found %s", filename);
 437                 return ret;
 438         }
 439
 440         ret = ath3k_load_fwfile(udev, firmware);
 441         release_firmware(firmware);
 442
 443         return ret;
 444 }
 445
 446 static int ath3k_probe(struct usb_interface *intf,
 447                         const struct usb_device_id *id)
 448 {
 449         const struct firmware *firmware;
 450         struct usb_device *udev = interface_to_usbdev(intf);
 451         int ret;
 452
 453         BT_DBG("intf %p id %p", intf, id);
 454
 455         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 456                 return -ENODEV;
 457
 458         /* match device ID in ath3k blacklist table */
 459         if (!id->driver_info) {
 460                 const struct usb_device_id *match;
 461                 match = usb_match_id(intf, ath3k_blist_tbl);
 462                 if (match)
 463                         id = match;
 464         }
 465
 466         /* load patch and sysconfig files for AR3012 */
 467         if (id->driver_info & BTUSB_ATH3012) {
 468
 469                 /* New firmware with patch and sysconfig files already loaded */
 470                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
 471                         return -ENODEV;
 472
 473                 ret = ath3k_load_patch(udev);
 474                 if (ret < 0) {
 475                         BT_ERR("Loading patch file failed");
 476                         return ret;
 477                 }
 478                 ret = ath3k_load_syscfg(udev);
 479                 if (ret < 0) {
 480                         BT_ERR("Loading sysconfig file failed");
 481                         return ret;
 482                 }
 483                 ret = ath3k_set_normal_mode(udev);
 484                 if (ret < 0) {
 485                         BT_ERR("Set normal mode failed");
 486                         return ret;
 487                 }
 488                 ath3k_switch_pid(udev);
 489                 return 0;
 490         }
 491
 492         ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
 493         if (ret < 0) {
 494                 if (ret == -ENOENT)
 495                         BT_ERR("Firmware file \"%s\" not found",
 496                                                         ATH3K_FIRMWARE);
 497                 else
 498                         BT_ERR("Firmware file \"%s\" request failed (err=%d)",
 499                                                         ATH3K_FIRMWARE, ret);
 500                 return ret;
 501         }
 502
 503         ret = ath3k_load_firmware(udev, firmware);
 504         release_firmware(firmware);
 505
 506         return ret;
 507 }
 508
 509 static void ath3k_disconnect(struct usb_interface *intf)
 510 {
 511         BT_DBG("ath3k_disconnect intf %p", intf);
 512 }
 513
 514 static struct usb_driver ath3k_driver = {
 515         .name           = "ath3k",
 516         .probe          = ath3k_probe,
 517         .disconnect     = ath3k_disconnect,
 518         .id_table       = ath3k_table,
 519         .disable_hub_initiated_lpm = 1,
 520 };
 521
 522 module_usb_driver(ath3k_driver);
 523
 524 MODULE_AUTHOR("Atheros Communications");
 525 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
 526 MODULE_VERSION(VERSION);
 527 MODULE_LICENSE("GPL");
 528 MODULE_FIRMWARE(ATH3K_FIRMWARE);