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 <asm/unaligned.h>
  31 #include <net/bluetooth/bluetooth.h>
  32
  33 #define VERSION "1.0"
  34 #define ATH3K_FIRMWARE  "ath3k-1.fw"
  35
  36 #define ATH3K_DNLOAD                            0x01
  37 #define ATH3K_GETSTATE                          0x05
  38 #define ATH3K_SET_NORMAL_MODE                   0x07
  39 #define ATH3K_GETVERSION                        0x09
  40 #define USB_REG_SWITCH_VID_PID                  0x0a
  41
  42 #define ATH3K_MODE_MASK                         0x3F
  43 #define ATH3K_NORMAL_MODE                       0x0E
  44
  45 #define ATH3K_PATCH_UPDATE                      0x80
  46 #define ATH3K_SYSCFG_UPDATE                     0x40
  47
  48 #define ATH3K_XTAL_FREQ_26M                     0x00
  49 #define ATH3K_XTAL_FREQ_40M                     0x01
  50 #define ATH3K_XTAL_FREQ_19P2                    0x02
  51 #define ATH3K_NAME_LEN                          0xFF
  52
  53 struct ath3k_version {
  54         __le32  rom_version;
  55         __le32  build_version;
  56         __le32  ram_version;
  57         __u8    ref_clock;
  58         __u8    reserved[7];
  59 } __packed;
  60
  61 static const struct usb_device_id ath3k_table[] = {
  62         /* Atheros AR3011 */
  63         { USB_DEVICE(0x0CF3, 0x3000) },
  64
  65         /* Atheros AR3011 with sflash firmware*/
  66         { USB_DEVICE(0x0489, 0xE027) },
  67         { USB_DEVICE(0x0489, 0xE03D) },
  68         { USB_DEVICE(0x0930, 0x0215) },
  69         { USB_DEVICE(0x0CF3, 0x3002) },
  70         { USB_DEVICE(0x0CF3, 0xE019) },
  71         { USB_DEVICE(0x13d3, 0x3304) },
  72
  73         /* Atheros AR9285 Malbec with sflash firmware */
  74         { USB_DEVICE(0x03F0, 0x311D) },
  75
  76         /* Atheros AR3012 with sflash firmware*/
  77         { USB_DEVICE(0x0489, 0xe04d) },
  78         { USB_DEVICE(0x0489, 0xe04e) },
  79         { USB_DEVICE(0x0489, 0xe057) },
  80         { USB_DEVICE(0x0489, 0xe056) },
  81         { USB_DEVICE(0x0489, 0xe05f) },
  82         { USB_DEVICE(0x0489, 0xe078) },
  83         { USB_DEVICE(0x04c5, 0x1330) },
  84         { USB_DEVICE(0x04CA, 0x3004) },
  85         { USB_DEVICE(0x04CA, 0x3005) },
  86         { USB_DEVICE(0x04CA, 0x3006) },
  87         { USB_DEVICE(0x04CA, 0x3007) },
  88         { USB_DEVICE(0x04CA, 0x3008) },
  89         { USB_DEVICE(0x04CA, 0x300b) },
  90         { USB_DEVICE(0x04CA, 0x3010) },
  91         { USB_DEVICE(0x0930, 0x0219) },
  92         { USB_DEVICE(0x0930, 0x0220) },
  93         { USB_DEVICE(0x0930, 0x0227) },
  94         { USB_DEVICE(0x0b05, 0x17d0) },
  95         { USB_DEVICE(0x0CF3, 0x0036) },
  96         { USB_DEVICE(0x0CF3, 0x3004) },
  97         { USB_DEVICE(0x0CF3, 0x3008) },
  98         { USB_DEVICE(0x0CF3, 0x311D) },
  99         { USB_DEVICE(0x0CF3, 0x311E) },
 100         { USB_DEVICE(0x0CF3, 0x311F) },
 101         { USB_DEVICE(0x0cf3, 0x3121) },
 102         { USB_DEVICE(0x0CF3, 0x817a) },
 103         { USB_DEVICE(0x0cf3, 0xe003) },
 104         { USB_DEVICE(0x0CF3, 0xE004) },
 105         { USB_DEVICE(0x0CF3, 0xE005) },
 106         { USB_DEVICE(0x13d3, 0x3362) },
 107         { USB_DEVICE(0x13d3, 0x3375) },
 108         { USB_DEVICE(0x13d3, 0x3393) },
 109         { USB_DEVICE(0x13d3, 0x3402) },
 110         { USB_DEVICE(0x13d3, 0x3408) },
 111         { USB_DEVICE(0x13d3, 0x3432) },
 112
 113         /* Atheros AR5BBU12 with sflash firmware */
 114         { USB_DEVICE(0x0489, 0xE02C) },
 115
 116         /* Atheros AR5BBU22 with sflash firmware */
 117         { USB_DEVICE(0x0489, 0xE036) },
 118         { USB_DEVICE(0x0489, 0xE03C) },
 119
 120         { }     /* Terminating entry */
 121 };
 122
 123 MODULE_DEVICE_TABLE(usb, ath3k_table);
 124
 125 #define BTUSB_ATH3012           0x80
 126 /* This table is to load patch and sysconfig files
 127  * for AR3012 */
 128 static const struct usb_device_id ath3k_blist_tbl[] = {
 129
 130         /* Atheros AR3012 with sflash firmware*/
 131         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 132         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 133         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 134         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 135         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 136         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 137         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 138         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 139         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 140         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 141         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 142         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 143         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 144         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 145         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 146         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 147         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 148         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 149         { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
 150         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 151         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 152         { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
 153         { USB_DEVICE(0x0cf3, 0x311E), .driver_info = BTUSB_ATH3012 },
 154         { USB_DEVICE(0x0cf3, 0x311F), .driver_info = BTUSB_ATH3012 },
 155         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 156         { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
 157         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 158         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 159         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 160         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 161         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 166
 167         /* Atheros AR5BBU22 with sflash firmware */
 168         { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
 170
 171         { }     /* Terminating entry */
 172 };
 173
 174 #define USB_REQ_DFU_DNLOAD      1
 175 #define BULK_SIZE               4096
 176 #define FW_HDR_SIZE             20
 177
 178 static int ath3k_load_firmware(struct usb_device *udev,
 179                                 const struct firmware *firmware)
 180 {
 181         u8 *send_buf;
 182         int err, pipe, len, size, sent = 0;
 183         int count = firmware->size;
 184
 185         BT_DBG("udev %p", udev);
 186
 187         pipe = usb_sndctrlpipe(udev, 0);
 188
 189         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 190         if (!send_buf) {
 191                 BT_ERR("Can't allocate memory chunk for firmware");
 192                 return -ENOMEM;
 193         }
 194
 195         memcpy(send_buf, firmware->data, 20);
 196         err = usb_control_msg(udev, pipe, USB_REQ_DFU_DNLOAD, USB_TYPE_VENDOR,
 197                               0, 0, send_buf, 20, USB_CTRL_SET_TIMEOUT);
 198         if (err < 0) {
 199                 BT_ERR("Can't change to loading configuration err");
 200                 goto error;
 201         }
 202         sent += 20;
 203         count -= 20;
 204
 205         pipe = usb_sndbulkpipe(udev, 0x02);
 206
 207         while (count) {
 208                 size = min_t(uint, count, BULK_SIZE);
 209                 memcpy(send_buf, firmware->data + sent, size);
 210
 211                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 212                                         &len, 3000);
 213
 214                 if (err || (len != size)) {
 215                         BT_ERR("Error in firmware loading err = %d,"
 216                                 "len = %d, size = %d", err, len, size);
 217                         goto error;
 218                 }
 219
 220                 sent  += size;
 221                 count -= size;
 222         }
 223
 224 error:
 225         kfree(send_buf);
 226         return err;
 227 }
 228
 229 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
 230 {
 231         int ret, pipe = 0;
 232         char *buf;
 233
 234         buf = kmalloc(sizeof(*buf), GFP_KERNEL);
 235         if (!buf)
 236                 return -ENOMEM;
 237
 238         pipe = usb_rcvctrlpipe(udev, 0);
 239         ret = usb_control_msg(udev, pipe, ATH3K_GETSTATE,
 240                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 241                               buf, sizeof(*buf), USB_CTRL_SET_TIMEOUT);
 242
 243         *state = *buf;
 244         kfree(buf);
 245
 246         return ret;
 247 }
 248
 249 static int ath3k_get_version(struct usb_device *udev,
 250                         struct ath3k_version *version)
 251 {
 252         int ret, pipe = 0;
 253         struct ath3k_version *buf;
 254         const int size = sizeof(*buf);
 255
 256         buf = kmalloc(size, GFP_KERNEL);
 257         if (!buf)
 258                 return -ENOMEM;
 259
 260         pipe = usb_rcvctrlpipe(udev, 0);
 261         ret = usb_control_msg(udev, pipe, ATH3K_GETVERSION,
 262                               USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 263                               buf, size, USB_CTRL_SET_TIMEOUT);
 264
 265         memcpy(version, buf, size);
 266         kfree(buf);
 267
 268         return ret;
 269 }
 270
 271 static int ath3k_load_fwfile(struct usb_device *udev,
 272                 const struct firmware *firmware)
 273 {
 274         u8 *send_buf;
 275         int err, pipe, len, size, count, sent = 0;
 276         int ret;
 277
 278         count = firmware->size;
 279
 280         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 281         if (!send_buf) {
 282                 BT_ERR("Can't allocate memory chunk for firmware");
 283                 return -ENOMEM;
 284         }
 285
 286         size = min_t(uint, count, FW_HDR_SIZE);
 287         memcpy(send_buf, firmware->data, size);
 288
 289         pipe = usb_sndctrlpipe(udev, 0);
 290         ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
 291                         USB_TYPE_VENDOR, 0, 0, send_buf,
 292                         size, USB_CTRL_SET_TIMEOUT);
 293         if (ret < 0) {
 294                 BT_ERR("Can't change to loading configuration err");
 295                 kfree(send_buf);
 296                 return ret;
 297         }
 298
 299         sent += size;
 300         count -= size;
 301
 302         pipe = usb_sndbulkpipe(udev, 0x02);
 303
 304         while (count) {
 305                 size = min_t(uint, count, BULK_SIZE);
 306                 memcpy(send_buf, firmware->data + sent, size);
 307
 308                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 309                                         &len, 3000);
 310                 if (err || (len != size)) {
 311                         BT_ERR("Error in firmware loading err = %d,"
 312                                 "len = %d, size = %d", err, len, size);
 313                         kfree(send_buf);
 314                         return err;
 315                 }
 316                 sent  += size;
 317                 count -= size;
 318         }
 319
 320         kfree(send_buf);
 321         return 0;
 322 }
 323
 324 static int ath3k_switch_pid(struct usb_device *udev)
 325 {
 326         int pipe = 0;
 327
 328         pipe = usb_sndctrlpipe(udev, 0);
 329         return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
 330                         USB_TYPE_VENDOR, 0, 0,
 331                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 332 }
 333
 334 static int ath3k_set_normal_mode(struct usb_device *udev)
 335 {
 336         unsigned char fw_state;
 337         int pipe = 0, ret;
 338
 339         ret = ath3k_get_state(udev, &fw_state);
 340         if (ret < 0) {
 341                 BT_ERR("Can't get state to change to normal mode err");
 342                 return ret;
 343         }
 344
 345         if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
 346                 BT_DBG("firmware was already in normal mode");
 347                 return 0;
 348         }
 349
 350         pipe = usb_sndctrlpipe(udev, 0);
 351         return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
 352                         USB_TYPE_VENDOR, 0, 0,
 353                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 354 }
 355
 356 static int ath3k_load_patch(struct usb_device *udev)
 357 {
 358         unsigned char fw_state;
 359         char filename[ATH3K_NAME_LEN] = {0};
 360         const struct firmware *firmware;
 361         struct ath3k_version fw_version;
 362         __u32 pt_rom_version, pt_build_version;
 363         int ret;
 364
 365         ret = ath3k_get_state(udev, &fw_state);
 366         if (ret < 0) {
 367                 BT_ERR("Can't get state to change to load ram patch err");
 368                 return ret;
 369         }
 370
 371         if (fw_state & ATH3K_PATCH_UPDATE) {
 372                 BT_DBG("Patch was already downloaded");
 373                 return 0;
 374         }
 375
 376         ret = ath3k_get_version(udev, &fw_version);
 377         if (ret < 0) {
 378                 BT_ERR("Can't get version to change to load ram patch err");
 379                 return ret;
 380         }
 381
 382         snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
 383                  le32_to_cpu(fw_version.rom_version));
 384
 385         ret = request_firmware(&firmware, filename, &udev->dev);
 386         if (ret < 0) {
 387                 BT_ERR("Patch file not found %s", filename);
 388                 return ret;
 389         }
 390
 391         pt_rom_version = get_unaligned_le32(firmware->data +
 392                                             firmware->size - 8);
 393         pt_build_version = get_unaligned_le32(firmware->data +
 394                                               firmware->size - 4);
 395
 396         if (pt_rom_version != le32_to_cpu(fw_version.rom_version) ||
 397             pt_build_version <= le32_to_cpu(fw_version.build_version)) {
 398                 BT_ERR("Patch file version did not match with firmware");
 399                 release_firmware(firmware);
 400                 return -EINVAL;
 401         }
 402
 403         ret = ath3k_load_fwfile(udev, firmware);
 404         release_firmware(firmware);
 405
 406         return ret;
 407 }
 408
 409 static int ath3k_load_syscfg(struct usb_device *udev)
 410 {
 411         unsigned char fw_state;
 412         char filename[ATH3K_NAME_LEN] = {0};
 413         const struct firmware *firmware;
 414         struct ath3k_version fw_version;
 415         int clk_value, ret;
 416
 417         ret = ath3k_get_state(udev, &fw_state);
 418         if (ret < 0) {
 419                 BT_ERR("Can't get state to change to load configuration err");
 420                 return -EBUSY;
 421         }
 422
 423         ret = ath3k_get_version(udev, &fw_version);
 424         if (ret < 0) {
 425                 BT_ERR("Can't get version to change to load ram patch err");
 426                 return ret;
 427         }
 428
 429         switch (fw_version.ref_clock) {
 430
 431         case ATH3K_XTAL_FREQ_26M:
 432                 clk_value = 26;
 433                 break;
 434         case ATH3K_XTAL_FREQ_40M:
 435                 clk_value = 40;
 436                 break;
 437         case ATH3K_XTAL_FREQ_19P2:
 438                 clk_value = 19;
 439                 break;
 440         default:
 441                 clk_value = 0;
 442                 break;
 443         }
 444
 445         snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
 446                 le32_to_cpu(fw_version.rom_version), clk_value, ".dfu");
 447
 448         ret = request_firmware(&firmware, filename, &udev->dev);
 449         if (ret < 0) {
 450                 BT_ERR("Configuration file not found %s", filename);
 451                 return ret;
 452         }
 453
 454         ret = ath3k_load_fwfile(udev, firmware);
 455         release_firmware(firmware);
 456
 457         return ret;
 458 }
 459
 460 static int ath3k_probe(struct usb_interface *intf,
 461                         const struct usb_device_id *id)
 462 {
 463         const struct firmware *firmware;
 464         struct usb_device *udev = interface_to_usbdev(intf);
 465         int ret;
 466
 467         BT_DBG("intf %p id %p", intf, id);
 468
 469         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 470                 return -ENODEV;
 471
 472         /* match device ID in ath3k blacklist table */
 473         if (!id->driver_info) {
 474                 const struct usb_device_id *match;
 475                 match = usb_match_id(intf, ath3k_blist_tbl);
 476                 if (match)
 477                         id = match;
 478         }
 479
 480         /* load patch and sysconfig files for AR3012 */
 481         if (id->driver_info & BTUSB_ATH3012) {
 482
 483                 /* New firmware with patch and sysconfig files already loaded */
 484                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
 485                         return -ENODEV;
 486
 487                 ret = ath3k_load_patch(udev);
 488                 if (ret < 0) {
 489                         BT_ERR("Loading patch file failed");
 490                         return ret;
 491                 }
 492                 ret = ath3k_load_syscfg(udev);
 493                 if (ret < 0) {
 494                         BT_ERR("Loading sysconfig file failed");
 495                         return ret;
 496                 }
 497                 ret = ath3k_set_normal_mode(udev);
 498                 if (ret < 0) {
 499                         BT_ERR("Set normal mode failed");
 500                         return ret;
 501                 }
 502                 ath3k_switch_pid(udev);
 503                 return 0;
 504         }
 505
 506         ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
 507         if (ret < 0) {
 508                 if (ret == -ENOENT)
 509                         BT_ERR("Firmware file \"%s\" not found",
 510                                                         ATH3K_FIRMWARE);
 511                 else
 512                         BT_ERR("Firmware file \"%s\" request failed (err=%d)",
 513                                                         ATH3K_FIRMWARE, ret);
 514                 return ret;
 515         }
 516
 517         ret = ath3k_load_firmware(udev, firmware);
 518         release_firmware(firmware);
 519
 520         return ret;
 521 }
 522
 523 static void ath3k_disconnect(struct usb_interface *intf)
 524 {
 525         BT_DBG("ath3k_disconnect intf %p", intf);
 526 }
 527
 528 static struct usb_driver ath3k_driver = {
 529         .name           = "ath3k",
 530         .probe          = ath3k_probe,
 531         .disconnect     = ath3k_disconnect,
 532         .id_table       = ath3k_table,
 533         .disable_hub_initiated_lpm = 1,
 534 };
 535
 536 module_usb_driver(ath3k_driver);
 537
 538 MODULE_AUTHOR("Atheros Communications");
 539 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
 540 MODULE_VERSION(VERSION);
 541 MODULE_LICENSE("GPL");
 542 MODULE_FIRMWARE(ATH3K_FIRMWARE);