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