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, 0x3008) },
  86         { USB_DEVICE(0x13d3, 0x3362) },
  87         { USB_DEVICE(0x0CF3, 0xE004) },
  88         { USB_DEVICE(0x0930, 0x0219) },
  89         { USB_DEVICE(0x0489, 0xe057) },
  90         { USB_DEVICE(0x13d3, 0x3393) },
  91         { USB_DEVICE(0x0489, 0xe04e) },
  92         { USB_DEVICE(0x0489, 0xe056) },
  93         { USB_DEVICE(0x0489, 0xe04d) },
  94
  95         /* Atheros AR5BBU12 with sflash firmware */
  96         { USB_DEVICE(0x0489, 0xE02C) },
  97
  98         /* Atheros AR5BBU22 with sflash firmware */
  99         { USB_DEVICE(0x0489, 0xE03C) },
 100         { USB_DEVICE(0x0489, 0xE036) },
 101
 102         { }     /* Terminating entry */
 103 };
 104
 105 MODULE_DEVICE_TABLE(usb, ath3k_table);
 106
 107 #define BTUSB_ATH3012           0x80
 108 /* This table is to load patch and sysconfig files
 109  * for AR3012 */
 110 static struct usb_device_id ath3k_blist_tbl[] = {
 111
 112         /* Atheros AR3012 with sflash firmware*/
 113         { USB_DEVICE(0x0CF3, 0x0036), .driver_info = BTUSB_ATH3012 },
 114         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 115         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 116         { USB_DEVICE(0x0cf3, 0x311D), .driver_info = BTUSB_ATH3012 },
 117         { USB_DEVICE(0x0CF3, 0x817a), .driver_info = BTUSB_ATH3012 },
 118         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 119         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 120         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 121         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 122         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 123         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 124         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 125         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 126         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 127         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 128         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 129         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 130         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 131
 132         /* Atheros AR5BBU22 with sflash firmware */
 133         { USB_DEVICE(0x0489, 0xE03C), .driver_info = BTUSB_ATH3012 },
 134         { USB_DEVICE(0x0489, 0xE036), .driver_info = BTUSB_ATH3012 },
 135
 136         { }     /* Terminating entry */
 137 };
 138
 139 #define USB_REQ_DFU_DNLOAD      1
 140 #define BULK_SIZE               4096
 141 #define FW_HDR_SIZE             20
 142
 143 static int ath3k_load_firmware(struct usb_device *udev,
 144                                 const struct firmware *firmware)
 145 {
 146         u8 *send_buf;
 147         int err, pipe, len, size, sent = 0;
 148         int count = firmware->size;
 149
 150         BT_DBG("udev %p", udev);
 151
 152         pipe = usb_sndctrlpipe(udev, 0);
 153
 154         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 155         if (!send_buf) {
 156                 BT_ERR("Can't allocate memory chunk for firmware");
 157                 return -ENOMEM;
 158         }
 159
 160         memcpy(send_buf, firmware->data, 20);
 161         if ((err = usb_control_msg(udev, pipe,
 162                                 USB_REQ_DFU_DNLOAD,
 163                                 USB_TYPE_VENDOR, 0, 0,
 164                                 send_buf, 20, USB_CTRL_SET_TIMEOUT)) < 0) {
 165                 BT_ERR("Can't change to loading configuration err");
 166                 goto error;
 167         }
 168         sent += 20;
 169         count -= 20;
 170
 171         while (count) {
 172                 size = min_t(uint, count, BULK_SIZE);
 173                 pipe = usb_sndbulkpipe(udev, 0x02);
 174                 memcpy(send_buf, firmware->data + sent, size);
 175
 176                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 177                                         &len, 3000);
 178
 179                 if (err || (len != size)) {
 180                         BT_ERR("Error in firmware loading err = %d,"
 181                                 "len = %d, size = %d", err, len, size);
 182                         goto error;
 183                 }
 184
 185                 sent  += size;
 186                 count -= size;
 187         }
 188
 189 error:
 190         kfree(send_buf);
 191         return err;
 192 }
 193
 194 static int ath3k_get_state(struct usb_device *udev, unsigned char *state)
 195 {
 196         int pipe = 0;
 197
 198         pipe = usb_rcvctrlpipe(udev, 0);
 199         return usb_control_msg(udev, pipe, ATH3K_GETSTATE,
 200                         USB_TYPE_VENDOR | USB_DIR_IN, 0, 0,
 201                         state, 0x01, USB_CTRL_SET_TIMEOUT);
 202 }
 203
 204 static int ath3k_get_version(struct usb_device *udev,
 205                         struct ath3k_version *version)
 206 {
 207         int pipe = 0;
 208
 209         pipe = usb_rcvctrlpipe(udev, 0);
 210         return usb_control_msg(udev, pipe, ATH3K_GETVERSION,
 211                         USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, version,
 212                         sizeof(struct ath3k_version),
 213                         USB_CTRL_SET_TIMEOUT);
 214 }
 215
 216 static int ath3k_load_fwfile(struct usb_device *udev,
 217                 const struct firmware *firmware)
 218 {
 219         u8 *send_buf;
 220         int err, pipe, len, size, count, sent = 0;
 221         int ret;
 222
 223         count = firmware->size;
 224
 225         send_buf = kmalloc(BULK_SIZE, GFP_KERNEL);
 226         if (!send_buf) {
 227                 BT_ERR("Can't allocate memory chunk for firmware");
 228                 return -ENOMEM;
 229         }
 230
 231         size = min_t(uint, count, FW_HDR_SIZE);
 232         memcpy(send_buf, firmware->data, size);
 233
 234         pipe = usb_sndctrlpipe(udev, 0);
 235         ret = usb_control_msg(udev, pipe, ATH3K_DNLOAD,
 236                         USB_TYPE_VENDOR, 0, 0, send_buf,
 237                         size, USB_CTRL_SET_TIMEOUT);
 238         if (ret < 0) {
 239                 BT_ERR("Can't change to loading configuration err");
 240                 kfree(send_buf);
 241                 return ret;
 242         }
 243
 244         sent += size;
 245         count -= size;
 246
 247         while (count) {
 248                 size = min_t(uint, count, BULK_SIZE);
 249                 pipe = usb_sndbulkpipe(udev, 0x02);
 250
 251                 memcpy(send_buf, firmware->data + sent, size);
 252
 253                 err = usb_bulk_msg(udev, pipe, send_buf, size,
 254                                         &len, 3000);
 255                 if (err || (len != size)) {
 256                         BT_ERR("Error in firmware loading err = %d,"
 257                                 "len = %d, size = %d", err, len, size);
 258                         kfree(send_buf);
 259                         return err;
 260                 }
 261                 sent  += size;
 262                 count -= size;
 263         }
 264
 265         kfree(send_buf);
 266         return 0;
 267 }
 268
 269 static int ath3k_switch_pid(struct usb_device *udev)
 270 {
 271         int pipe = 0;
 272
 273         pipe = usb_sndctrlpipe(udev, 0);
 274         return usb_control_msg(udev, pipe, USB_REG_SWITCH_VID_PID,
 275                         USB_TYPE_VENDOR, 0, 0,
 276                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 277 }
 278
 279 static int ath3k_set_normal_mode(struct usb_device *udev)
 280 {
 281         unsigned char fw_state;
 282         int pipe = 0, ret;
 283
 284         ret = ath3k_get_state(udev, &fw_state);
 285         if (ret < 0) {
 286                 BT_ERR("Can't get state to change to normal mode err");
 287                 return ret;
 288         }
 289
 290         if ((fw_state & ATH3K_MODE_MASK) == ATH3K_NORMAL_MODE) {
 291                 BT_DBG("firmware was already in normal mode");
 292                 return 0;
 293         }
 294
 295         pipe = usb_sndctrlpipe(udev, 0);
 296         return usb_control_msg(udev, pipe, ATH3K_SET_NORMAL_MODE,
 297                         USB_TYPE_VENDOR, 0, 0,
 298                         NULL, 0, USB_CTRL_SET_TIMEOUT);
 299 }
 300
 301 static int ath3k_load_patch(struct usb_device *udev)
 302 {
 303         unsigned char fw_state;
 304         char filename[ATH3K_NAME_LEN] = {0};
 305         const struct firmware *firmware;
 306         struct ath3k_version fw_version, pt_version;
 307         int ret;
 308
 309         ret = ath3k_get_state(udev, &fw_state);
 310         if (ret < 0) {
 311                 BT_ERR("Can't get state to change to load ram patch err");
 312                 return ret;
 313         }
 314
 315         if (fw_state & ATH3K_PATCH_UPDATE) {
 316                 BT_DBG("Patch was already downloaded");
 317                 return 0;
 318         }
 319
 320         ret = ath3k_get_version(udev, &fw_version);
 321         if (ret < 0) {
 322                 BT_ERR("Can't get version to change to load ram patch err");
 323                 return ret;
 324         }
 325
 326         snprintf(filename, ATH3K_NAME_LEN, "ar3k/AthrBT_0x%08x.dfu",
 327                 fw_version.rom_version);
 328
 329         ret = request_firmware(&firmware, filename, &udev->dev);
 330         if (ret < 0) {
 331                 BT_ERR("Patch file not found %s", filename);
 332                 return ret;
 333         }
 334
 335         pt_version.rom_version = *(int *)(firmware->data + firmware->size - 8);
 336         pt_version.build_version = *(int *)
 337                 (firmware->data + firmware->size - 4);
 338
 339         if ((pt_version.rom_version != fw_version.rom_version) ||
 340                 (pt_version.build_version <= fw_version.build_version)) {
 341                 BT_ERR("Patch file version did not match with firmware");
 342                 release_firmware(firmware);
 343                 return -EINVAL;
 344         }
 345
 346         ret = ath3k_load_fwfile(udev, firmware);
 347         release_firmware(firmware);
 348
 349         return ret;
 350 }
 351
 352 static int ath3k_load_syscfg(struct usb_device *udev)
 353 {
 354         unsigned char fw_state;
 355         char filename[ATH3K_NAME_LEN] = {0};
 356         const struct firmware *firmware;
 357         struct ath3k_version fw_version;
 358         int clk_value, ret;
 359
 360         ret = ath3k_get_state(udev, &fw_state);
 361         if (ret < 0) {
 362                 BT_ERR("Can't get state to change to load configuration err");
 363                 return -EBUSY;
 364         }
 365
 366         ret = ath3k_get_version(udev, &fw_version);
 367         if (ret < 0) {
 368                 BT_ERR("Can't get version to change to load ram patch err");
 369                 return ret;
 370         }
 371
 372         switch (fw_version.ref_clock) {
 373
 374         case ATH3K_XTAL_FREQ_26M:
 375                 clk_value = 26;
 376                 break;
 377         case ATH3K_XTAL_FREQ_40M:
 378                 clk_value = 40;
 379                 break;
 380         case ATH3K_XTAL_FREQ_19P2:
 381                 clk_value = 19;
 382                 break;
 383         default:
 384                 clk_value = 0;
 385                 break;
 386         }
 387
 388         snprintf(filename, ATH3K_NAME_LEN, "ar3k/ramps_0x%08x_%d%s",
 389                 fw_version.rom_version, clk_value, ".dfu");
 390
 391         ret = request_firmware(&firmware, filename, &udev->dev);
 392         if (ret < 0) {
 393                 BT_ERR("Configuration file not found %s", filename);
 394                 return ret;
 395         }
 396
 397         ret = ath3k_load_fwfile(udev, firmware);
 398         release_firmware(firmware);
 399
 400         return ret;
 401 }
 402
 403 static int ath3k_probe(struct usb_interface *intf,
 404                         const struct usb_device_id *id)
 405 {
 406         const struct firmware *firmware;
 407         struct usb_device *udev = interface_to_usbdev(intf);
 408         int ret;
 409
 410         BT_DBG("intf %p id %p", intf, id);
 411
 412         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 413                 return -ENODEV;
 414
 415         /* match device ID in ath3k blacklist table */
 416         if (!id->driver_info) {
 417                 const struct usb_device_id *match;
 418                 match = usb_match_id(intf, ath3k_blist_tbl);
 419                 if (match)
 420                         id = match;
 421         }
 422
 423         /* load patch and sysconfig files for AR3012 */
 424         if (id->driver_info & BTUSB_ATH3012) {
 425
 426                 /* New firmware with patch and sysconfig files already loaded */
 427                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x0001)
 428                         return -ENODEV;
 429
 430                 ret = ath3k_load_patch(udev);
 431                 if (ret < 0) {
 432                         BT_ERR("Loading patch file failed");
 433                         return ret;
 434                 }
 435                 ret = ath3k_load_syscfg(udev);
 436                 if (ret < 0) {
 437                         BT_ERR("Loading sysconfig file failed");
 438                         return ret;
 439                 }
 440                 ret = ath3k_set_normal_mode(udev);
 441                 if (ret < 0) {
 442                         BT_ERR("Set normal mode failed");
 443                         return ret;
 444                 }
 445                 ath3k_switch_pid(udev);
 446                 return 0;
 447         }
 448
 449         ret = request_firmware(&firmware, ATH3K_FIRMWARE, &udev->dev);
 450         if (ret < 0) {
 451                 if (ret == -ENOENT)
 452                         BT_ERR("Firmware file \"%s\" not found",
 453                                                         ATH3K_FIRMWARE);
 454                 else
 455                         BT_ERR("Firmware file \"%s\" request failed (err=%d)",
 456                                                         ATH3K_FIRMWARE, ret);
 457                 return ret;
 458         }
 459
 460         ret = ath3k_load_firmware(udev, firmware);
 461         release_firmware(firmware);
 462
 463         return ret;
 464 }
 465
 466 static void ath3k_disconnect(struct usb_interface *intf)
 467 {
 468         BT_DBG("ath3k_disconnect intf %p", intf);
 469 }
 470
 471 static struct usb_driver ath3k_driver = {
 472         .name           = "ath3k",
 473         .probe          = ath3k_probe,
 474         .disconnect     = ath3k_disconnect,
 475         .id_table       = ath3k_table,
 476         .disable_hub_initiated_lpm = 1,
 477 };
 478
 479 module_usb_driver(ath3k_driver);
 480
 481 MODULE_AUTHOR("Atheros Communications");
 482 MODULE_DESCRIPTION("Atheros AR30xx firmware driver");
 483 MODULE_VERSION(VERSION);
 484 MODULE_LICENSE("GPL");
 485 MODULE_FIRMWARE(ATH3K_FIRMWARE);