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