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