1 /* 2 * Marvell Wireless LAN device driver: SDIO specific handling 3 * 4 * Copyright (C) 2011-2014, Marvell International Ltd. 5 * 6 * This software file (the "File") is distributed by Marvell International 7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 17 * this warranty disclaimer. 18 */ 19 20 #include <linux/firmware.h> 21 22 #include "decl.h" 23 #include "ioctl.h" 24 #include "util.h" 25 #include "fw.h" 26 #include "main.h" 27 #include "wmm.h" 28 #include "11n.h" 29 #include "sdio.h" 30 31 32 #define SDIO_VERSION "1.0" 33 34 static void mwifiex_sdio_work(struct work_struct *work); 35 36 static struct mwifiex_if_ops sdio_ops; 37 38 static struct memory_type_mapping generic_mem_type_map[] = { 39 {"DUMP", NULL, 0, 0xDD}, 40 }; 41 42 static struct memory_type_mapping mem_type_mapping_tbl[] = { 43 {"ITCM", NULL, 0, 0xF0}, 44 {"DTCM", NULL, 0, 0xF1}, 45 {"SQRAM", NULL, 0, 0xF2}, 46 {"APU", NULL, 0, 0xF3}, 47 {"CIU", NULL, 0, 0xF4}, 48 {"ICU", NULL, 0, 0xF5}, 49 {"MAC", NULL, 0, 0xF6}, 50 {"EXT7", NULL, 0, 0xF7}, 51 {"EXT8", NULL, 0, 0xF8}, 52 {"EXT9", NULL, 0, 0xF9}, 53 {"EXT10", NULL, 0, 0xFA}, 54 {"EXT11", NULL, 0, 0xFB}, 55 {"EXT12", NULL, 0, 0xFC}, 56 {"EXT13", NULL, 0, 0xFD}, 57 {"EXTLAST", NULL, 0, 0xFE}, 58 }; 59 60 static const struct of_device_id mwifiex_sdio_of_match_table[] = { 61 { .compatible = "marvell,sd8897" }, 62 { .compatible = "marvell,sd8997" }, 63 { } 64 }; 65 66 /* This function parse device tree node using mmc subnode devicetree API. 67 * The device node is saved in card->plt_of_node. 68 * if the device tree node exist and include interrupts attributes, this 69 * function will also request platform specific wakeup interrupt. 70 */ 71 static int mwifiex_sdio_probe_of(struct device *dev) 72 { 73 if (!of_match_node(mwifiex_sdio_of_match_table, dev->of_node)) { 74 dev_err(dev, "required compatible string missing\n"); 75 return -EINVAL; 76 } 77 78 return 0; 79 } 80 81 /* 82 * SDIO probe. 83 * 84 * This function probes an mwifiex device and registers it. It allocates 85 * the card structure, enables SDIO function number and initiates the 86 * device registration and initialization procedure by adding a logical 87 * interface. 88 */ 89 static int 90 mwifiex_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) 91 { 92 int ret; 93 struct sdio_mmc_card *card = NULL; 94 95 pr_debug("info: vendor=0x%4.04X device=0x%4.04X class=%d function=%d\n", 96 func->vendor, func->device, func->class, func->num); 97 98 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL); 99 if (!card) 100 return -ENOMEM; 101 102 init_completion(&card->fw_done); 103 104 card->func = func; 105 106 func->card->quirks |= MMC_QUIRK_BLKSZ_FOR_BYTE_MODE; 107 108 if (id->driver_data) { 109 struct mwifiex_sdio_device *data = (void *)id->driver_data; 110 111 card->firmware = data->firmware; 112 card->reg = data->reg; 113 card->max_ports = data->max_ports; 114 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit; 115 card->supports_sdio_new_mode = data->supports_sdio_new_mode; 116 card->has_control_mask = data->has_control_mask; 117 card->tx_buf_size = data->tx_buf_size; 118 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size; 119 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size; 120 card->can_dump_fw = data->can_dump_fw; 121 card->fw_dump_enh = data->fw_dump_enh; 122 card->can_auto_tdls = data->can_auto_tdls; 123 card->can_ext_scan = data->can_ext_scan; 124 INIT_WORK(&card->work, mwifiex_sdio_work); 125 } 126 127 sdio_claim_host(func); 128 ret = sdio_enable_func(func); 129 sdio_release_host(func); 130 131 if (ret) { 132 dev_err(&func->dev, "failed to enable function\n"); 133 return ret; 134 } 135 136 /* device tree node parsing and platform specific configuration*/ 137 if (func->dev.of_node) { 138 ret = mwifiex_sdio_probe_of(&func->dev); 139 if (ret) 140 goto err_disable; 141 } 142 143 ret = mwifiex_add_card(card, &card->fw_done, &sdio_ops, 144 MWIFIEX_SDIO, &func->dev); 145 if (ret) { 146 dev_err(&func->dev, "add card failed\n"); 147 goto err_disable; 148 } 149 150 return 0; 151 152 err_disable: 153 sdio_claim_host(func); 154 sdio_disable_func(func); 155 sdio_release_host(func); 156 157 return ret; 158 } 159 160 /* 161 * SDIO resume. 162 * 163 * Kernel needs to suspend all functions separately. Therefore all 164 * registered functions must have drivers with suspend and resume 165 * methods. Failing that the kernel simply removes the whole card. 166 * 167 * If already not resumed, this function turns on the traffic and 168 * sends a host sleep cancel request to the firmware. 169 */ 170 static int mwifiex_sdio_resume(struct device *dev) 171 { 172 struct sdio_func *func = dev_to_sdio_func(dev); 173 struct sdio_mmc_card *card; 174 struct mwifiex_adapter *adapter; 175 176 card = sdio_get_drvdata(func); 177 if (!card || !card->adapter) { 178 dev_err(dev, "resume: invalid card or adapter\n"); 179 return 0; 180 } 181 182 adapter = card->adapter; 183 184 if (!test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) { 185 mwifiex_dbg(adapter, WARN, 186 "device already resumed\n"); 187 return 0; 188 } 189 190 clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags); 191 192 /* Disable Host Sleep */ 193 mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA), 194 MWIFIEX_SYNC_CMD); 195 196 mwifiex_disable_wake(adapter); 197 198 return 0; 199 } 200 201 /* Write data into SDIO card register. Caller claims SDIO device. */ 202 static int 203 mwifiex_write_reg_locked(struct sdio_func *func, u32 reg, u8 data) 204 { 205 int ret = -1; 206 207 sdio_writeb(func, data, reg, &ret); 208 return ret; 209 } 210 211 /* This function writes data into SDIO card register. 212 */ 213 static int 214 mwifiex_write_reg(struct mwifiex_adapter *adapter, u32 reg, u8 data) 215 { 216 struct sdio_mmc_card *card = adapter->card; 217 int ret; 218 219 sdio_claim_host(card->func); 220 ret = mwifiex_write_reg_locked(card->func, reg, data); 221 sdio_release_host(card->func); 222 223 return ret; 224 } 225 226 /* This function reads data from SDIO card register. 227 */ 228 static int 229 mwifiex_read_reg(struct mwifiex_adapter *adapter, u32 reg, u8 *data) 230 { 231 struct sdio_mmc_card *card = adapter->card; 232 int ret = -1; 233 u8 val; 234 235 sdio_claim_host(card->func); 236 val = sdio_readb(card->func, reg, &ret); 237 sdio_release_host(card->func); 238 239 *data = val; 240 241 return ret; 242 } 243 244 /* This function writes multiple data into SDIO card memory. 245 * 246 * This does not work in suspended mode. 247 */ 248 static int 249 mwifiex_write_data_sync(struct mwifiex_adapter *adapter, 250 u8 *buffer, u32 pkt_len, u32 port) 251 { 252 struct sdio_mmc_card *card = adapter->card; 253 int ret; 254 u8 blk_mode = 255 (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; 256 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; 257 u32 blk_cnt = 258 (blk_mode == 259 BLOCK_MODE) ? (pkt_len / 260 MWIFIEX_SDIO_BLOCK_SIZE) : pkt_len; 261 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); 262 263 if (test_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags)) { 264 mwifiex_dbg(adapter, ERROR, 265 "%s: not allowed while suspended\n", __func__); 266 return -1; 267 } 268 269 sdio_claim_host(card->func); 270 271 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size); 272 273 sdio_release_host(card->func); 274 275 return ret; 276 } 277 278 /* This function reads multiple data from SDIO card memory. 279 */ 280 static int mwifiex_read_data_sync(struct mwifiex_adapter *adapter, u8 *buffer, 281 u32 len, u32 port, u8 claim) 282 { 283 struct sdio_mmc_card *card = adapter->card; 284 int ret; 285 u8 blk_mode = (port & MWIFIEX_SDIO_BYTE_MODE_MASK) ? BYTE_MODE 286 : BLOCK_MODE; 287 u32 blk_size = (blk_mode == BLOCK_MODE) ? MWIFIEX_SDIO_BLOCK_SIZE : 1; 288 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / MWIFIEX_SDIO_BLOCK_SIZE) 289 : len; 290 u32 ioport = (port & MWIFIEX_SDIO_IO_PORT_MASK); 291 292 if (claim) 293 sdio_claim_host(card->func); 294 295 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size); 296 297 if (claim) 298 sdio_release_host(card->func); 299 300 return ret; 301 } 302 303 /* This function reads the firmware status. 304 */ 305 static int 306 mwifiex_sdio_read_fw_status(struct mwifiex_adapter *adapter, u16 *dat) 307 { 308 struct sdio_mmc_card *card = adapter->card; 309 const struct mwifiex_sdio_card_reg *reg = card->reg; 310 u8 fws0, fws1; 311 312 if (mwifiex_read_reg(adapter, reg->status_reg_0, &fws0)) 313 return -1; 314 315 if (mwifiex_read_reg(adapter, reg->status_reg_1, &fws1)) 316 return -1; 317 318 *dat = (u16)((fws1 << 8) | fws0); 319 return 0; 320 } 321 322 /* This function checks the firmware status in card. 323 */ 324 static int mwifiex_check_fw_status(struct mwifiex_adapter *adapter, 325 u32 poll_num) 326 { 327 int ret = 0; 328 u16 firmware_stat; 329 u32 tries; 330 331 for (tries = 0; tries < poll_num; tries++) { 332 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); 333 if (ret) 334 continue; 335 if (firmware_stat == FIRMWARE_READY_SDIO) { 336 ret = 0; 337 break; 338 } 339 340 msleep(100); 341 ret = -1; 342 } 343 344 return ret; 345 } 346 347 /* This function checks if WLAN is the winner. 348 */ 349 static int mwifiex_check_winner_status(struct mwifiex_adapter *adapter) 350 { 351 int ret = 0; 352 u8 winner = 0; 353 struct sdio_mmc_card *card = adapter->card; 354 355 if (mwifiex_read_reg(adapter, card->reg->status_reg_0, &winner)) 356 return -1; 357 358 if (winner) 359 adapter->winner = 0; 360 else 361 adapter->winner = 1; 362 363 return ret; 364 } 365 366 /* 367 * SDIO remove. 368 * 369 * This function removes the interface and frees up the card structure. 370 */ 371 static void 372 mwifiex_sdio_remove(struct sdio_func *func) 373 { 374 struct sdio_mmc_card *card; 375 struct mwifiex_adapter *adapter; 376 struct mwifiex_private *priv; 377 int ret = 0; 378 u16 firmware_stat; 379 380 card = sdio_get_drvdata(func); 381 if (!card) 382 return; 383 384 wait_for_completion(&card->fw_done); 385 386 adapter = card->adapter; 387 if (!adapter || !adapter->priv_num) 388 return; 389 390 mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num); 391 392 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); 393 if (!ret && firmware_stat == FIRMWARE_READY_SDIO && 394 !adapter->mfg_mode) { 395 mwifiex_deauthenticate_all(adapter); 396 397 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 398 mwifiex_disable_auto_ds(priv); 399 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN); 400 } 401 402 mwifiex_remove_card(adapter); 403 } 404 405 /* 406 * SDIO suspend. 407 * 408 * Kernel needs to suspend all functions separately. Therefore all 409 * registered functions must have drivers with suspend and resume 410 * methods. Failing that the kernel simply removes the whole card. 411 * 412 * If already not suspended, this function allocates and sends a host 413 * sleep activate request to the firmware and turns off the traffic. 414 */ 415 static int mwifiex_sdio_suspend(struct device *dev) 416 { 417 struct sdio_func *func = dev_to_sdio_func(dev); 418 struct sdio_mmc_card *card; 419 struct mwifiex_adapter *adapter; 420 mmc_pm_flag_t pm_flag = 0; 421 int ret = 0; 422 423 pm_flag = sdio_get_host_pm_caps(func); 424 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", 425 sdio_func_id(func), pm_flag); 426 if (!(pm_flag & MMC_PM_KEEP_POWER)) { 427 dev_err(dev, "%s: cannot remain alive while host is" 428 " suspended\n", sdio_func_id(func)); 429 return -ENOSYS; 430 } 431 432 card = sdio_get_drvdata(func); 433 if (!card) { 434 dev_err(dev, "suspend: invalid card\n"); 435 return 0; 436 } 437 438 /* Might still be loading firmware */ 439 wait_for_completion(&card->fw_done); 440 441 adapter = card->adapter; 442 if (!adapter) { 443 dev_err(dev, "adapter is not valid\n"); 444 return 0; 445 } 446 447 if (!adapter->is_up) 448 return -EBUSY; 449 450 mwifiex_enable_wake(adapter); 451 452 /* Enable the Host Sleep */ 453 if (!mwifiex_enable_hs(adapter)) { 454 mwifiex_dbg(adapter, ERROR, 455 "cmd: failed to suspend\n"); 456 clear_bit(MWIFIEX_IS_HS_ENABLING, &adapter->work_flags); 457 mwifiex_disable_wake(adapter); 458 return -EFAULT; 459 } 460 461 mwifiex_dbg(adapter, INFO, 462 "cmd: suspend with MMC_PM_KEEP_POWER\n"); 463 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 464 465 /* Indicate device suspended */ 466 set_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags); 467 clear_bit(MWIFIEX_IS_HS_ENABLING, &adapter->work_flags); 468 469 return ret; 470 } 471 472 static void mwifiex_sdio_coredump(struct device *dev) 473 { 474 struct sdio_func *func = dev_to_sdio_func(dev); 475 struct sdio_mmc_card *card; 476 477 card = sdio_get_drvdata(func); 478 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, 479 &card->work_flags)) 480 schedule_work(&card->work); 481 } 482 483 /* Device ID for SD8786 */ 484 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116) 485 /* Device ID for SD8787 */ 486 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) 487 /* Device ID for SD8797 */ 488 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129) 489 /* Device ID for SD8897 */ 490 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d) 491 /* Device ID for SD8887 */ 492 #define SDIO_DEVICE_ID_MARVELL_8887 (0x9135) 493 /* Device ID for SD8801 */ 494 #define SDIO_DEVICE_ID_MARVELL_8801 (0x9139) 495 /* Device ID for SD8977 */ 496 #define SDIO_DEVICE_ID_MARVELL_8977 (0x9145) 497 /* Device ID for SD8987 */ 498 #define SDIO_DEVICE_ID_MARVELL_8987 (0x9149) 499 /* Device ID for SD8997 */ 500 #define SDIO_DEVICE_ID_MARVELL_8997 (0x9141) 501 502 503 /* WLAN IDs */ 504 static const struct sdio_device_id mwifiex_ids[] = { 505 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786), 506 .driver_data = (unsigned long) &mwifiex_sdio_sd8786}, 507 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787), 508 .driver_data = (unsigned long) &mwifiex_sdio_sd8787}, 509 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797), 510 .driver_data = (unsigned long) &mwifiex_sdio_sd8797}, 511 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897), 512 .driver_data = (unsigned long) &mwifiex_sdio_sd8897}, 513 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887), 514 .driver_data = (unsigned long)&mwifiex_sdio_sd8887}, 515 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801), 516 .driver_data = (unsigned long)&mwifiex_sdio_sd8801}, 517 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8977), 518 .driver_data = (unsigned long)&mwifiex_sdio_sd8977}, 519 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8987), 520 .driver_data = (unsigned long)&mwifiex_sdio_sd8987}, 521 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997), 522 .driver_data = (unsigned long)&mwifiex_sdio_sd8997}, 523 {}, 524 }; 525 526 MODULE_DEVICE_TABLE(sdio, mwifiex_ids); 527 528 static const struct dev_pm_ops mwifiex_sdio_pm_ops = { 529 .suspend = mwifiex_sdio_suspend, 530 .resume = mwifiex_sdio_resume, 531 }; 532 533 static struct sdio_driver mwifiex_sdio = { 534 .name = "mwifiex_sdio", 535 .id_table = mwifiex_ids, 536 .probe = mwifiex_sdio_probe, 537 .remove = mwifiex_sdio_remove, 538 .drv = { 539 .owner = THIS_MODULE, 540 .coredump = mwifiex_sdio_coredump, 541 .pm = &mwifiex_sdio_pm_ops, 542 } 543 }; 544 545 /* 546 * This function wakes up the card. 547 * 548 * A host power up command is written to the card configuration 549 * register to wake up the card. 550 */ 551 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) 552 { 553 mwifiex_dbg(adapter, EVENT, 554 "event: wakeup device...\n"); 555 556 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); 557 } 558 559 /* 560 * This function is called after the card has woken up. 561 * 562 * The card configuration register is reset. 563 */ 564 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) 565 { 566 mwifiex_dbg(adapter, EVENT, 567 "cmd: wakeup device completed\n"); 568 569 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); 570 } 571 572 static int mwifiex_sdio_dnld_fw(struct mwifiex_adapter *adapter, 573 struct mwifiex_fw_image *fw) 574 { 575 struct sdio_mmc_card *card = adapter->card; 576 int ret; 577 578 sdio_claim_host(card->func); 579 ret = mwifiex_dnld_fw(adapter, fw); 580 sdio_release_host(card->func); 581 582 return ret; 583 } 584 585 /* 586 * This function is used to initialize IO ports for the 587 * chipsets supporting SDIO new mode eg SD8897. 588 */ 589 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter) 590 { 591 u8 reg; 592 struct sdio_mmc_card *card = adapter->card; 593 594 adapter->ioport = MEM_PORT; 595 596 /* enable sdio new mode */ 597 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®)) 598 return -1; 599 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg, 600 reg | CMD53_NEW_MODE)) 601 return -1; 602 603 /* Configure cmd port and enable reading rx length from the register */ 604 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, ®)) 605 return -1; 606 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0, 607 reg | CMD_PORT_RD_LEN_EN)) 608 return -1; 609 610 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is 611 * completed 612 */ 613 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, ®)) 614 return -1; 615 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1, 616 reg | CMD_PORT_AUTO_EN)) 617 return -1; 618 619 return 0; 620 } 621 622 /* This function initializes the IO ports. 623 * 624 * The following operations are performed - 625 * - Read the IO ports (0, 1 and 2) 626 * - Set host interrupt Reset-To-Read to clear 627 * - Set auto re-enable interrupt 628 */ 629 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) 630 { 631 u8 reg; 632 struct sdio_mmc_card *card = adapter->card; 633 634 adapter->ioport = 0; 635 636 if (card->supports_sdio_new_mode) { 637 if (mwifiex_init_sdio_new_mode(adapter)) 638 return -1; 639 goto cont; 640 } 641 642 /* Read the IO port */ 643 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, ®)) 644 adapter->ioport |= (reg & 0xff); 645 else 646 return -1; 647 648 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, ®)) 649 adapter->ioport |= ((reg & 0xff) << 8); 650 else 651 return -1; 652 653 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, ®)) 654 adapter->ioport |= ((reg & 0xff) << 16); 655 else 656 return -1; 657 cont: 658 mwifiex_dbg(adapter, INFO, 659 "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); 660 661 /* Set Host interrupt reset to read to clear */ 662 if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®)) 663 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg, 664 reg | card->reg->sdio_int_mask); 665 else 666 return -1; 667 668 /* Dnld/Upld ready set to auto reset */ 669 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®)) 670 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg, 671 reg | AUTO_RE_ENABLE_INT); 672 else 673 return -1; 674 675 return 0; 676 } 677 678 /* 679 * This function sends data to the card. 680 */ 681 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, 682 u8 *payload, u32 pkt_len, u32 port) 683 { 684 u32 i = 0; 685 int ret; 686 687 do { 688 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); 689 if (ret) { 690 i++; 691 mwifiex_dbg(adapter, ERROR, 692 "host_to_card, write iomem\t" 693 "(%d) failed: %d\n", i, ret); 694 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) 695 mwifiex_dbg(adapter, ERROR, 696 "write CFG reg failed\n"); 697 698 ret = -1; 699 if (i > MAX_WRITE_IOMEM_RETRY) 700 return ret; 701 } 702 } while (ret == -1); 703 704 return ret; 705 } 706 707 /* 708 * This function gets the read port. 709 * 710 * If control port bit is set in MP read bitmap, the control port 711 * is returned, otherwise the current read port is returned and 712 * the value is increased (provided it does not reach the maximum 713 * limit, in which case it is reset to 1) 714 */ 715 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) 716 { 717 struct sdio_mmc_card *card = adapter->card; 718 const struct mwifiex_sdio_card_reg *reg = card->reg; 719 u32 rd_bitmap = card->mp_rd_bitmap; 720 721 mwifiex_dbg(adapter, DATA, 722 "data: mp_rd_bitmap=0x%08x\n", rd_bitmap); 723 724 if (card->supports_sdio_new_mode) { 725 if (!(rd_bitmap & reg->data_port_mask)) 726 return -1; 727 } else { 728 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask))) 729 return -1; 730 } 731 732 if ((card->has_control_mask) && 733 (card->mp_rd_bitmap & CTRL_PORT_MASK)) { 734 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK); 735 *port = CTRL_PORT; 736 mwifiex_dbg(adapter, DATA, 737 "data: port=%d mp_rd_bitmap=0x%08x\n", 738 *port, card->mp_rd_bitmap); 739 return 0; 740 } 741 742 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port))) 743 return -1; 744 745 /* We are now handling the SDIO data ports */ 746 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port)); 747 *port = card->curr_rd_port; 748 749 if (++card->curr_rd_port == card->max_ports) 750 card->curr_rd_port = reg->start_rd_port; 751 752 mwifiex_dbg(adapter, DATA, 753 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n", 754 *port, rd_bitmap, card->mp_rd_bitmap); 755 756 return 0; 757 } 758 759 /* 760 * This function gets the write port for data. 761 * 762 * The current write port is returned if available and the value is 763 * increased (provided it does not reach the maximum limit, in which 764 * case it is reset to 1) 765 */ 766 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port) 767 { 768 struct sdio_mmc_card *card = adapter->card; 769 const struct mwifiex_sdio_card_reg *reg = card->reg; 770 u32 wr_bitmap = card->mp_wr_bitmap; 771 772 mwifiex_dbg(adapter, DATA, 773 "data: mp_wr_bitmap=0x%08x\n", wr_bitmap); 774 775 if (!(wr_bitmap & card->mp_data_port_mask)) { 776 adapter->data_sent = true; 777 return -EBUSY; 778 } 779 780 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { 781 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port)); 782 *port = card->curr_wr_port; 783 if (++card->curr_wr_port == card->mp_end_port) 784 card->curr_wr_port = reg->start_wr_port; 785 } else { 786 adapter->data_sent = true; 787 return -EBUSY; 788 } 789 790 if ((card->has_control_mask) && (*port == CTRL_PORT)) { 791 mwifiex_dbg(adapter, ERROR, 792 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", 793 *port, card->curr_wr_port, wr_bitmap, 794 card->mp_wr_bitmap); 795 return -1; 796 } 797 798 mwifiex_dbg(adapter, DATA, 799 "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", 800 *port, wr_bitmap, card->mp_wr_bitmap); 801 802 return 0; 803 } 804 805 /* 806 * This function polls the card status. 807 */ 808 static int 809 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) 810 { 811 struct sdio_mmc_card *card = adapter->card; 812 u32 tries; 813 u8 cs; 814 815 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 816 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs)) 817 break; 818 else if ((cs & bits) == bits) 819 return 0; 820 821 usleep_range(10, 20); 822 } 823 824 mwifiex_dbg(adapter, ERROR, 825 "poll card status failed, tries = %d\n", tries); 826 827 return -1; 828 } 829 830 /* 831 * This function disables the host interrupt. 832 * 833 * The host interrupt mask is read, the disable bit is reset and 834 * written back to the card host interrupt mask register. 835 */ 836 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) 837 { 838 struct sdio_mmc_card *card = adapter->card; 839 struct sdio_func *func = card->func; 840 841 sdio_claim_host(func); 842 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0); 843 sdio_release_irq(func); 844 sdio_release_host(func); 845 } 846 847 /* 848 * This function reads the interrupt status from card. 849 */ 850 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) 851 { 852 struct sdio_mmc_card *card = adapter->card; 853 u8 sdio_ireg; 854 unsigned long flags; 855 856 if (mwifiex_read_data_sync(adapter, card->mp_regs, 857 card->reg->max_mp_regs, 858 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) { 859 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n"); 860 return; 861 } 862 863 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg]; 864 if (sdio_ireg) { 865 /* 866 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS 867 * For SDIO new mode CMD port interrupts 868 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or 869 * UP_LD_CMD_PORT_HOST_INT_STATUS 870 * Clear the interrupt status register 871 */ 872 mwifiex_dbg(adapter, INTR, 873 "int: sdio_ireg = %#x\n", sdio_ireg); 874 spin_lock_irqsave(&adapter->int_lock, flags); 875 adapter->int_status |= sdio_ireg; 876 spin_unlock_irqrestore(&adapter->int_lock, flags); 877 } 878 } 879 880 /* 881 * SDIO interrupt handler. 882 * 883 * This function reads the interrupt status from firmware and handles 884 * the interrupt in current thread (ksdioirqd) right away. 885 */ 886 static void 887 mwifiex_sdio_interrupt(struct sdio_func *func) 888 { 889 struct mwifiex_adapter *adapter; 890 struct sdio_mmc_card *card; 891 892 card = sdio_get_drvdata(func); 893 if (!card || !card->adapter) { 894 pr_err("int: func=%p card=%p adapter=%p\n", 895 func, card, card ? card->adapter : NULL); 896 return; 897 } 898 adapter = card->adapter; 899 900 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) 901 adapter->ps_state = PS_STATE_AWAKE; 902 903 mwifiex_interrupt_status(adapter); 904 mwifiex_main_process(adapter); 905 } 906 907 /* 908 * This function enables the host interrupt. 909 * 910 * The host interrupt enable mask is written to the card 911 * host interrupt mask register. 912 */ 913 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) 914 { 915 struct sdio_mmc_card *card = adapter->card; 916 struct sdio_func *func = card->func; 917 int ret; 918 919 sdio_claim_host(func); 920 921 /* Request the SDIO IRQ */ 922 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); 923 if (ret) { 924 mwifiex_dbg(adapter, ERROR, 925 "claim irq failed: ret=%d\n", ret); 926 goto out; 927 } 928 929 /* Simply write the mask to the register */ 930 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 931 card->reg->host_int_enable); 932 if (ret) { 933 mwifiex_dbg(adapter, ERROR, 934 "enable host interrupt failed\n"); 935 sdio_release_irq(func); 936 } 937 938 out: 939 sdio_release_host(func); 940 return ret; 941 } 942 943 /* 944 * This function sends a data buffer to the card. 945 */ 946 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, 947 u32 *type, u8 *buffer, 948 u32 npayload, u32 ioport) 949 { 950 int ret; 951 u32 nb; 952 953 if (!buffer) { 954 mwifiex_dbg(adapter, ERROR, 955 "%s: buffer is NULL\n", __func__); 956 return -1; 957 } 958 959 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); 960 961 if (ret) { 962 mwifiex_dbg(adapter, ERROR, 963 "%s: read iomem failed: %d\n", __func__, 964 ret); 965 return -1; 966 } 967 968 nb = get_unaligned_le16((buffer)); 969 if (nb > npayload) { 970 mwifiex_dbg(adapter, ERROR, 971 "%s: invalid packet, nb=%d npayload=%d\n", 972 __func__, nb, npayload); 973 return -1; 974 } 975 976 *type = get_unaligned_le16((buffer + 2)); 977 978 return ret; 979 } 980 981 /* 982 * This function downloads the firmware to the card. 983 * 984 * Firmware is downloaded to the card in blocks. Every block download 985 * is tested for CRC errors, and retried a number of times before 986 * returning failure. 987 */ 988 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, 989 struct mwifiex_fw_image *fw) 990 { 991 struct sdio_mmc_card *card = adapter->card; 992 const struct mwifiex_sdio_card_reg *reg = card->reg; 993 int ret; 994 u8 *firmware = fw->fw_buf; 995 u32 firmware_len = fw->fw_len; 996 u32 offset = 0; 997 u8 base0, base1; 998 u8 *fwbuf; 999 u16 len = 0; 1000 u32 txlen, tx_blocks = 0, tries; 1001 u32 i = 0; 1002 1003 if (!firmware_len) { 1004 mwifiex_dbg(adapter, ERROR, 1005 "firmware image not found! Terminating download\n"); 1006 return -1; 1007 } 1008 1009 mwifiex_dbg(adapter, INFO, 1010 "info: downloading FW image (%d bytes)\n", 1011 firmware_len); 1012 1013 /* Assume that the allocated buffer is 8-byte aligned */ 1014 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); 1015 if (!fwbuf) 1016 return -ENOMEM; 1017 1018 sdio_claim_host(card->func); 1019 1020 /* Perform firmware data transfer */ 1021 do { 1022 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY 1023 bits */ 1024 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | 1025 DN_LD_CARD_RDY); 1026 if (ret) { 1027 mwifiex_dbg(adapter, ERROR, 1028 "FW download with helper:\t" 1029 "poll status timeout @ %d\n", offset); 1030 goto done; 1031 } 1032 1033 /* More data? */ 1034 if (offset >= firmware_len) 1035 break; 1036 1037 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 1038 ret = mwifiex_read_reg(adapter, reg->base_0_reg, 1039 &base0); 1040 if (ret) { 1041 mwifiex_dbg(adapter, ERROR, 1042 "dev BASE0 register read failed:\t" 1043 "base0=%#04X(%d). Terminating dnld\n", 1044 base0, base0); 1045 goto done; 1046 } 1047 ret = mwifiex_read_reg(adapter, reg->base_1_reg, 1048 &base1); 1049 if (ret) { 1050 mwifiex_dbg(adapter, ERROR, 1051 "dev BASE1 register read failed:\t" 1052 "base1=%#04X(%d). Terminating dnld\n", 1053 base1, base1); 1054 goto done; 1055 } 1056 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); 1057 1058 if (len) 1059 break; 1060 1061 usleep_range(10, 20); 1062 } 1063 1064 if (!len) { 1065 break; 1066 } else if (len > MWIFIEX_UPLD_SIZE) { 1067 mwifiex_dbg(adapter, ERROR, 1068 "FW dnld failed @ %d, invalid length %d\n", 1069 offset, len); 1070 ret = -1; 1071 goto done; 1072 } 1073 1074 txlen = len; 1075 1076 if (len & BIT(0)) { 1077 i++; 1078 if (i > MAX_WRITE_IOMEM_RETRY) { 1079 mwifiex_dbg(adapter, ERROR, 1080 "FW dnld failed @ %d, over max retry\n", 1081 offset); 1082 ret = -1; 1083 goto done; 1084 } 1085 mwifiex_dbg(adapter, ERROR, 1086 "CRC indicated by the helper:\t" 1087 "len = 0x%04X, txlen = %d\n", len, txlen); 1088 len &= ~BIT(0); 1089 /* Setting this to 0 to resend from same offset */ 1090 txlen = 0; 1091 } else { 1092 i = 0; 1093 1094 /* Set blocksize to transfer - checking for last 1095 block */ 1096 if (firmware_len - offset < txlen) 1097 txlen = firmware_len - offset; 1098 1099 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1) 1100 / MWIFIEX_SDIO_BLOCK_SIZE; 1101 1102 /* Copy payload to buffer */ 1103 memmove(fwbuf, &firmware[offset], txlen); 1104 } 1105 1106 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * 1107 MWIFIEX_SDIO_BLOCK_SIZE, 1108 adapter->ioport); 1109 if (ret) { 1110 mwifiex_dbg(adapter, ERROR, 1111 "FW download, write iomem (%d) failed @ %d\n", 1112 i, offset); 1113 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) 1114 mwifiex_dbg(adapter, ERROR, 1115 "write CFG reg failed\n"); 1116 1117 ret = -1; 1118 goto done; 1119 } 1120 1121 offset += txlen; 1122 } while (true); 1123 1124 mwifiex_dbg(adapter, MSG, 1125 "info: FW download over, size %d bytes\n", offset); 1126 1127 ret = 0; 1128 done: 1129 sdio_release_host(card->func); 1130 kfree(fwbuf); 1131 return ret; 1132 } 1133 1134 /* 1135 * This function decode sdio aggreation pkt. 1136 * 1137 * Based on the the data block size and pkt_len, 1138 * skb data will be decoded to few packets. 1139 */ 1140 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter, 1141 struct sk_buff *skb) 1142 { 1143 u32 total_pkt_len, pkt_len; 1144 struct sk_buff *skb_deaggr; 1145 u16 blk_size; 1146 u8 blk_num; 1147 u8 *data; 1148 1149 data = skb->data; 1150 total_pkt_len = skb->len; 1151 1152 while (total_pkt_len >= (SDIO_HEADER_OFFSET + adapter->intf_hdr_len)) { 1153 if (total_pkt_len < adapter->sdio_rx_block_size) 1154 break; 1155 blk_num = *(data + BLOCK_NUMBER_OFFSET); 1156 blk_size = adapter->sdio_rx_block_size * blk_num; 1157 if (blk_size > total_pkt_len) { 1158 mwifiex_dbg(adapter, ERROR, 1159 "%s: error in blk_size,\t" 1160 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n", 1161 __func__, blk_num, blk_size, total_pkt_len); 1162 break; 1163 } 1164 pkt_len = get_unaligned_le16((data + 1165 SDIO_HEADER_OFFSET)); 1166 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) { 1167 mwifiex_dbg(adapter, ERROR, 1168 "%s: error in pkt_len,\t" 1169 "pkt_len=%d, blk_size=%d\n", 1170 __func__, pkt_len, blk_size); 1171 break; 1172 } 1173 1174 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, GFP_KERNEL); 1175 if (!skb_deaggr) 1176 break; 1177 skb_put(skb_deaggr, pkt_len); 1178 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len); 1179 skb_pull(skb_deaggr, adapter->intf_hdr_len); 1180 1181 mwifiex_handle_rx_packet(adapter, skb_deaggr); 1182 data += blk_size; 1183 total_pkt_len -= blk_size; 1184 } 1185 } 1186 1187 /* 1188 * This function decodes a received packet. 1189 * 1190 * Based on the type, the packet is treated as either a data, or 1191 * a command response, or an event, and the correct handler 1192 * function is invoked. 1193 */ 1194 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, 1195 struct sk_buff *skb, u32 upld_typ) 1196 { 1197 u8 *cmd_buf; 1198 u16 pkt_len; 1199 struct mwifiex_rxinfo *rx_info; 1200 1201 pkt_len = get_unaligned_le16(skb->data); 1202 1203 if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) { 1204 skb_trim(skb, pkt_len); 1205 skb_pull(skb, adapter->intf_hdr_len); 1206 } 1207 1208 switch (upld_typ) { 1209 case MWIFIEX_TYPE_AGGR_DATA: 1210 mwifiex_dbg(adapter, INFO, 1211 "info: --- Rx: Aggr Data packet ---\n"); 1212 rx_info = MWIFIEX_SKB_RXCB(skb); 1213 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA; 1214 if (adapter->rx_work_enabled) { 1215 skb_queue_tail(&adapter->rx_data_q, skb); 1216 atomic_inc(&adapter->rx_pending); 1217 adapter->data_received = true; 1218 } else { 1219 mwifiex_deaggr_sdio_pkt(adapter, skb); 1220 dev_kfree_skb_any(skb); 1221 } 1222 break; 1223 1224 case MWIFIEX_TYPE_DATA: 1225 mwifiex_dbg(adapter, DATA, 1226 "info: --- Rx: Data packet ---\n"); 1227 if (adapter->rx_work_enabled) { 1228 skb_queue_tail(&adapter->rx_data_q, skb); 1229 adapter->data_received = true; 1230 atomic_inc(&adapter->rx_pending); 1231 } else { 1232 mwifiex_handle_rx_packet(adapter, skb); 1233 } 1234 break; 1235 1236 case MWIFIEX_TYPE_CMD: 1237 mwifiex_dbg(adapter, CMD, 1238 "info: --- Rx: Cmd Response ---\n"); 1239 /* take care of curr_cmd = NULL case */ 1240 if (!adapter->curr_cmd) { 1241 cmd_buf = adapter->upld_buf; 1242 1243 if (adapter->ps_state == PS_STATE_SLEEP_CFM) 1244 mwifiex_process_sleep_confirm_resp(adapter, 1245 skb->data, 1246 skb->len); 1247 1248 memcpy(cmd_buf, skb->data, 1249 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, 1250 skb->len)); 1251 1252 dev_kfree_skb_any(skb); 1253 } else { 1254 adapter->cmd_resp_received = true; 1255 adapter->curr_cmd->resp_skb = skb; 1256 } 1257 break; 1258 1259 case MWIFIEX_TYPE_EVENT: 1260 mwifiex_dbg(adapter, EVENT, 1261 "info: --- Rx: Event ---\n"); 1262 adapter->event_cause = get_unaligned_le32(skb->data); 1263 1264 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) 1265 memcpy(adapter->event_body, 1266 skb->data + MWIFIEX_EVENT_HEADER_LEN, 1267 skb->len); 1268 1269 /* event cause has been saved to adapter->event_cause */ 1270 adapter->event_received = true; 1271 adapter->event_skb = skb; 1272 1273 break; 1274 1275 default: 1276 mwifiex_dbg(adapter, ERROR, 1277 "unknown upload type %#x\n", upld_typ); 1278 dev_kfree_skb_any(skb); 1279 break; 1280 } 1281 1282 return 0; 1283 } 1284 1285 /* 1286 * This function transfers received packets from card to driver, performing 1287 * aggregation if required. 1288 * 1289 * For data received on control port, or if aggregation is disabled, the 1290 * received buffers are uploaded as separate packets. However, if aggregation 1291 * is enabled and required, the buffers are copied onto an aggregation buffer, 1292 * provided there is space left, processed and finally uploaded. 1293 */ 1294 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, 1295 u16 rx_len, u8 port) 1296 { 1297 struct sdio_mmc_card *card = adapter->card; 1298 s32 f_do_rx_aggr = 0; 1299 s32 f_do_rx_cur = 0; 1300 s32 f_aggr_cur = 0; 1301 s32 f_post_aggr_cur = 0; 1302 struct sk_buff *skb_deaggr; 1303 struct sk_buff *skb = NULL; 1304 u32 pkt_len, pkt_type, mport, pind; 1305 u8 *curr_ptr; 1306 1307 if ((card->has_control_mask) && (port == CTRL_PORT)) { 1308 /* Read the command Resp without aggr */ 1309 mwifiex_dbg(adapter, CMD, 1310 "info: %s: no aggregation for cmd\t" 1311 "response\n", __func__); 1312 1313 f_do_rx_cur = 1; 1314 goto rx_curr_single; 1315 } 1316 1317 if (!card->mpa_rx.enabled) { 1318 mwifiex_dbg(adapter, WARN, 1319 "info: %s: rx aggregation disabled\n", 1320 __func__); 1321 1322 f_do_rx_cur = 1; 1323 goto rx_curr_single; 1324 } 1325 1326 if ((!card->has_control_mask && (card->mp_rd_bitmap & 1327 card->reg->data_port_mask)) || 1328 (card->has_control_mask && (card->mp_rd_bitmap & 1329 (~((u32) CTRL_PORT_MASK))))) { 1330 /* Some more data RX pending */ 1331 mwifiex_dbg(adapter, INFO, 1332 "info: %s: not last packet\n", __func__); 1333 1334 if (MP_RX_AGGR_IN_PROGRESS(card)) { 1335 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) { 1336 f_aggr_cur = 1; 1337 } else { 1338 /* No room in Aggr buf, do rx aggr now */ 1339 f_do_rx_aggr = 1; 1340 f_post_aggr_cur = 1; 1341 } 1342 } else { 1343 /* Rx aggr not in progress */ 1344 f_aggr_cur = 1; 1345 } 1346 1347 } else { 1348 /* No more data RX pending */ 1349 mwifiex_dbg(adapter, INFO, 1350 "info: %s: last packet\n", __func__); 1351 1352 if (MP_RX_AGGR_IN_PROGRESS(card)) { 1353 f_do_rx_aggr = 1; 1354 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) 1355 f_aggr_cur = 1; 1356 else 1357 /* No room in Aggr buf, do rx aggr now */ 1358 f_do_rx_cur = 1; 1359 } else { 1360 f_do_rx_cur = 1; 1361 } 1362 } 1363 1364 if (f_aggr_cur) { 1365 mwifiex_dbg(adapter, INFO, 1366 "info: current packet aggregation\n"); 1367 /* Curr pkt can be aggregated */ 1368 mp_rx_aggr_setup(card, rx_len, port); 1369 1370 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || 1371 mp_rx_aggr_port_limit_reached(card)) { 1372 mwifiex_dbg(adapter, INFO, 1373 "info: %s: aggregated packet\t" 1374 "limit reached\n", __func__); 1375 /* No more pkts allowed in Aggr buf, rx it */ 1376 f_do_rx_aggr = 1; 1377 } 1378 } 1379 1380 if (f_do_rx_aggr) { 1381 /* do aggr RX now */ 1382 mwifiex_dbg(adapter, DATA, 1383 "info: do_rx_aggr: num of packets: %d\n", 1384 card->mpa_rx.pkt_cnt); 1385 1386 if (card->supports_sdio_new_mode) { 1387 int i; 1388 u32 port_count; 1389 1390 for (i = 0, port_count = 0; i < card->max_ports; i++) 1391 if (card->mpa_rx.ports & BIT(i)) 1392 port_count++; 1393 1394 /* Reading data from "start_port + 0" to "start_port + 1395 * port_count -1", so decrease the count by 1 1396 */ 1397 port_count--; 1398 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | 1399 (port_count << 8)) + card->mpa_rx.start_port; 1400 } else { 1401 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | 1402 (card->mpa_rx.ports << 4)) + 1403 card->mpa_rx.start_port; 1404 } 1405 1406 if (card->mpa_rx.pkt_cnt == 1) 1407 mport = adapter->ioport + card->mpa_rx.start_port; 1408 1409 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, 1410 card->mpa_rx.buf_len, mport, 1)) 1411 goto error; 1412 1413 curr_ptr = card->mpa_rx.buf; 1414 1415 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { 1416 u32 *len_arr = card->mpa_rx.len_arr; 1417 1418 /* get curr PKT len & type */ 1419 pkt_len = get_unaligned_le16(&curr_ptr[0]); 1420 pkt_type = get_unaligned_le16(&curr_ptr[2]); 1421 1422 /* copy pkt to deaggr buf */ 1423 skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind], 1424 GFP_KERNEL); 1425 if (!skb_deaggr) { 1426 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t" 1427 "drop pkt len=%d type=%d\n", 1428 pkt_len, pkt_type); 1429 curr_ptr += len_arr[pind]; 1430 continue; 1431 } 1432 1433 skb_put(skb_deaggr, len_arr[pind]); 1434 1435 if ((pkt_type == MWIFIEX_TYPE_DATA || 1436 (pkt_type == MWIFIEX_TYPE_AGGR_DATA && 1437 adapter->sdio_rx_aggr_enable)) && 1438 (pkt_len <= len_arr[pind])) { 1439 1440 memcpy(skb_deaggr->data, curr_ptr, pkt_len); 1441 1442 skb_trim(skb_deaggr, pkt_len); 1443 1444 /* Process de-aggr packet */ 1445 mwifiex_decode_rx_packet(adapter, skb_deaggr, 1446 pkt_type); 1447 } else { 1448 mwifiex_dbg(adapter, ERROR, 1449 "drop wrong aggr pkt:\t" 1450 "sdio_single_port_rx_aggr=%d\t" 1451 "type=%d len=%d max_len=%d\n", 1452 adapter->sdio_rx_aggr_enable, 1453 pkt_type, pkt_len, len_arr[pind]); 1454 dev_kfree_skb_any(skb_deaggr); 1455 } 1456 curr_ptr += len_arr[pind]; 1457 } 1458 MP_RX_AGGR_BUF_RESET(card); 1459 } 1460 1461 rx_curr_single: 1462 if (f_do_rx_cur) { 1463 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n", 1464 port, rx_len); 1465 1466 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL); 1467 if (!skb) { 1468 mwifiex_dbg(adapter, ERROR, 1469 "single skb allocated fail,\t" 1470 "drop pkt port=%d len=%d\n", port, rx_len); 1471 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, 1472 card->mpa_rx.buf, rx_len, 1473 adapter->ioport + port)) 1474 goto error; 1475 return 0; 1476 } 1477 1478 skb_put(skb, rx_len); 1479 1480 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, 1481 skb->data, skb->len, 1482 adapter->ioport + port)) 1483 goto error; 1484 if (!adapter->sdio_rx_aggr_enable && 1485 pkt_type == MWIFIEX_TYPE_AGGR_DATA) { 1486 mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t" 1487 "current SDIO RX Aggr not enabled\n", 1488 pkt_type); 1489 dev_kfree_skb_any(skb); 1490 return 0; 1491 } 1492 1493 mwifiex_decode_rx_packet(adapter, skb, pkt_type); 1494 } 1495 if (f_post_aggr_cur) { 1496 mwifiex_dbg(adapter, INFO, 1497 "info: current packet aggregation\n"); 1498 /* Curr pkt can be aggregated */ 1499 mp_rx_aggr_setup(card, rx_len, port); 1500 } 1501 1502 return 0; 1503 error: 1504 if (MP_RX_AGGR_IN_PROGRESS(card)) 1505 MP_RX_AGGR_BUF_RESET(card); 1506 1507 if (f_do_rx_cur && skb) 1508 /* Single transfer pending. Free curr buff also */ 1509 dev_kfree_skb_any(skb); 1510 1511 return -1; 1512 } 1513 1514 /* 1515 * This function checks the current interrupt status. 1516 * 1517 * The following interrupts are checked and handled by this function - 1518 * - Data sent 1519 * - Command sent 1520 * - Packets received 1521 * 1522 * Since the firmware does not generate download ready interrupt if the 1523 * port updated is command port only, command sent interrupt checking 1524 * should be done manually, and for every SDIO interrupt. 1525 * 1526 * In case of Rx packets received, the packets are uploaded from card to 1527 * host and processed accordingly. 1528 */ 1529 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) 1530 { 1531 struct sdio_mmc_card *card = adapter->card; 1532 const struct mwifiex_sdio_card_reg *reg = card->reg; 1533 int ret = 0; 1534 u8 sdio_ireg; 1535 struct sk_buff *skb; 1536 u8 port = CTRL_PORT; 1537 u32 len_reg_l, len_reg_u; 1538 u32 rx_blocks; 1539 u16 rx_len; 1540 unsigned long flags; 1541 u32 bitmap; 1542 u8 cr; 1543 1544 spin_lock_irqsave(&adapter->int_lock, flags); 1545 sdio_ireg = adapter->int_status; 1546 adapter->int_status = 0; 1547 spin_unlock_irqrestore(&adapter->int_lock, flags); 1548 1549 if (!sdio_ireg) 1550 return ret; 1551 1552 /* Following interrupt is only for SDIO new mode */ 1553 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent) 1554 adapter->cmd_sent = false; 1555 1556 /* Following interrupt is only for SDIO new mode */ 1557 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) { 1558 u32 pkt_type; 1559 1560 /* read the len of control packet */ 1561 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8; 1562 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0]; 1563 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE); 1564 if (rx_len <= adapter->intf_hdr_len || 1565 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > 1566 MWIFIEX_RX_DATA_BUF_SIZE) 1567 return -1; 1568 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); 1569 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len); 1570 1571 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL); 1572 if (!skb) 1573 return -1; 1574 1575 skb_put(skb, rx_len); 1576 1577 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data, 1578 skb->len, adapter->ioport | 1579 CMD_PORT_SLCT)) { 1580 mwifiex_dbg(adapter, ERROR, 1581 "%s: failed to card_to_host", __func__); 1582 dev_kfree_skb_any(skb); 1583 goto term_cmd; 1584 } 1585 1586 if ((pkt_type != MWIFIEX_TYPE_CMD) && 1587 (pkt_type != MWIFIEX_TYPE_EVENT)) 1588 mwifiex_dbg(adapter, ERROR, 1589 "%s:Received wrong packet on cmd port", 1590 __func__); 1591 1592 mwifiex_decode_rx_packet(adapter, skb, pkt_type); 1593 } 1594 1595 if (sdio_ireg & DN_LD_HOST_INT_STATUS) { 1596 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l]; 1597 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8; 1598 if (card->supports_sdio_new_mode) { 1599 bitmap |= 1600 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16; 1601 bitmap |= 1602 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24; 1603 } 1604 card->mp_wr_bitmap = bitmap; 1605 1606 mwifiex_dbg(adapter, INTR, 1607 "int: DNLD: wr_bitmap=0x%x\n", 1608 card->mp_wr_bitmap); 1609 if (adapter->data_sent && 1610 (card->mp_wr_bitmap & card->mp_data_port_mask)) { 1611 mwifiex_dbg(adapter, INTR, 1612 "info: <--- Tx DONE Interrupt --->\n"); 1613 adapter->data_sent = false; 1614 } 1615 } 1616 1617 /* As firmware will not generate download ready interrupt if the port 1618 updated is command port only, cmd_sent should be done for any SDIO 1619 interrupt. */ 1620 if (card->has_control_mask && adapter->cmd_sent) { 1621 /* Check if firmware has attach buffer at command port and 1622 update just that in wr_bit_map. */ 1623 card->mp_wr_bitmap |= 1624 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK; 1625 if (card->mp_wr_bitmap & CTRL_PORT_MASK) 1626 adapter->cmd_sent = false; 1627 } 1628 1629 mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n", 1630 adapter->cmd_sent, adapter->data_sent); 1631 if (sdio_ireg & UP_LD_HOST_INT_STATUS) { 1632 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l]; 1633 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8; 1634 if (card->supports_sdio_new_mode) { 1635 bitmap |= 1636 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16; 1637 bitmap |= 1638 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24; 1639 } 1640 card->mp_rd_bitmap = bitmap; 1641 mwifiex_dbg(adapter, INTR, 1642 "int: UPLD: rd_bitmap=0x%x\n", 1643 card->mp_rd_bitmap); 1644 1645 while (true) { 1646 ret = mwifiex_get_rd_port(adapter, &port); 1647 if (ret) { 1648 mwifiex_dbg(adapter, INFO, 1649 "info: no more rd_port available\n"); 1650 break; 1651 } 1652 len_reg_l = reg->rd_len_p0_l + (port << 1); 1653 len_reg_u = reg->rd_len_p0_u + (port << 1); 1654 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; 1655 rx_len |= (u16) card->mp_regs[len_reg_l]; 1656 mwifiex_dbg(adapter, INFO, 1657 "info: RX: port=%d rx_len=%u\n", 1658 port, rx_len); 1659 rx_blocks = 1660 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - 1661 1) / MWIFIEX_SDIO_BLOCK_SIZE; 1662 if (rx_len <= adapter->intf_hdr_len || 1663 (card->mpa_rx.enabled && 1664 ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > 1665 card->mpa_rx.buf_size))) { 1666 mwifiex_dbg(adapter, ERROR, 1667 "invalid rx_len=%d\n", 1668 rx_len); 1669 return -1; 1670 } 1671 1672 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); 1673 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", 1674 rx_len); 1675 1676 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len, 1677 port)) { 1678 mwifiex_dbg(adapter, ERROR, 1679 "card_to_host_mpa failed: int status=%#x\n", 1680 sdio_ireg); 1681 goto term_cmd; 1682 } 1683 } 1684 } 1685 1686 return 0; 1687 1688 term_cmd: 1689 /* terminate cmd */ 1690 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) 1691 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n"); 1692 else 1693 mwifiex_dbg(adapter, INFO, 1694 "info: CFG reg val = %d\n", cr); 1695 1696 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04))) 1697 mwifiex_dbg(adapter, ERROR, 1698 "write CFG reg failed\n"); 1699 else 1700 mwifiex_dbg(adapter, INFO, "info: write success\n"); 1701 1702 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) 1703 mwifiex_dbg(adapter, ERROR, 1704 "read CFG reg failed\n"); 1705 else 1706 mwifiex_dbg(adapter, INFO, 1707 "info: CFG reg val =%x\n", cr); 1708 1709 return -1; 1710 } 1711 1712 /* 1713 * This function aggregates transmission buffers in driver and downloads 1714 * the aggregated packet to card. 1715 * 1716 * The individual packets are aggregated by copying into an aggregation 1717 * buffer and then downloaded to the card. Previous unsent packets in the 1718 * aggregation buffer are pre-copied first before new packets are added. 1719 * Aggregation is done till there is space left in the aggregation buffer, 1720 * or till new packets are available. 1721 * 1722 * The function will only download the packet to the card when aggregation 1723 * stops, otherwise it will just aggregate the packet in aggregation buffer 1724 * and return. 1725 */ 1726 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, 1727 u8 *payload, u32 pkt_len, u32 port, 1728 u32 next_pkt_len) 1729 { 1730 struct sdio_mmc_card *card = adapter->card; 1731 int ret = 0; 1732 s32 f_send_aggr_buf = 0; 1733 s32 f_send_cur_buf = 0; 1734 s32 f_precopy_cur_buf = 0; 1735 s32 f_postcopy_cur_buf = 0; 1736 u32 mport; 1737 int index; 1738 1739 if (!card->mpa_tx.enabled || 1740 (card->has_control_mask && (port == CTRL_PORT)) || 1741 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) { 1742 mwifiex_dbg(adapter, WARN, 1743 "info: %s: tx aggregation disabled\n", 1744 __func__); 1745 1746 f_send_cur_buf = 1; 1747 goto tx_curr_single; 1748 } 1749 1750 if (next_pkt_len) { 1751 /* More pkt in TX queue */ 1752 mwifiex_dbg(adapter, INFO, 1753 "info: %s: more packets in queue.\n", 1754 __func__); 1755 1756 if (MP_TX_AGGR_IN_PROGRESS(card)) { 1757 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { 1758 f_precopy_cur_buf = 1; 1759 1760 if (!(card->mp_wr_bitmap & 1761 (1 << card->curr_wr_port)) || 1762 !MP_TX_AGGR_BUF_HAS_ROOM( 1763 card, pkt_len + next_pkt_len)) 1764 f_send_aggr_buf = 1; 1765 } else { 1766 /* No room in Aggr buf, send it */ 1767 f_send_aggr_buf = 1; 1768 1769 if (!(card->mp_wr_bitmap & 1770 (1 << card->curr_wr_port))) 1771 f_send_cur_buf = 1; 1772 else 1773 f_postcopy_cur_buf = 1; 1774 } 1775 } else { 1776 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) && 1777 (card->mp_wr_bitmap & (1 << card->curr_wr_port))) 1778 f_precopy_cur_buf = 1; 1779 else 1780 f_send_cur_buf = 1; 1781 } 1782 } else { 1783 /* Last pkt in TX queue */ 1784 mwifiex_dbg(adapter, INFO, 1785 "info: %s: Last packet in Tx Queue.\n", 1786 __func__); 1787 1788 if (MP_TX_AGGR_IN_PROGRESS(card)) { 1789 /* some packs in Aggr buf already */ 1790 f_send_aggr_buf = 1; 1791 1792 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) 1793 f_precopy_cur_buf = 1; 1794 else 1795 /* No room in Aggr buf, send it */ 1796 f_send_cur_buf = 1; 1797 } else { 1798 f_send_cur_buf = 1; 1799 } 1800 } 1801 1802 if (f_precopy_cur_buf) { 1803 mwifiex_dbg(adapter, DATA, 1804 "data: %s: precopy current buffer\n", 1805 __func__); 1806 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); 1807 1808 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || 1809 mp_tx_aggr_port_limit_reached(card)) 1810 /* No more pkts allowed in Aggr buf, send it */ 1811 f_send_aggr_buf = 1; 1812 } 1813 1814 if (f_send_aggr_buf) { 1815 mwifiex_dbg(adapter, DATA, 1816 "data: %s: send aggr buffer: %d %d\n", 1817 __func__, card->mpa_tx.start_port, 1818 card->mpa_tx.ports); 1819 if (card->supports_sdio_new_mode) { 1820 u32 port_count; 1821 int i; 1822 1823 for (i = 0, port_count = 0; i < card->max_ports; i++) 1824 if (card->mpa_tx.ports & BIT(i)) 1825 port_count++; 1826 1827 /* Writing data from "start_port + 0" to "start_port + 1828 * port_count -1", so decrease the count by 1 1829 */ 1830 port_count--; 1831 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | 1832 (port_count << 8)) + card->mpa_tx.start_port; 1833 } else { 1834 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | 1835 (card->mpa_tx.ports << 4)) + 1836 card->mpa_tx.start_port; 1837 } 1838 1839 if (card->mpa_tx.pkt_cnt == 1) 1840 mport = adapter->ioport + card->mpa_tx.start_port; 1841 1842 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, 1843 card->mpa_tx.buf_len, mport); 1844 1845 /* Save the last multi port tx aggreagation info to debug log */ 1846 index = adapter->dbg.last_sdio_mp_index; 1847 index = (index + 1) % MWIFIEX_DBG_SDIO_MP_NUM; 1848 adapter->dbg.last_sdio_mp_index = index; 1849 adapter->dbg.last_mp_wr_ports[index] = mport; 1850 adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap; 1851 adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len; 1852 adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port; 1853 1854 MP_TX_AGGR_BUF_RESET(card); 1855 } 1856 1857 tx_curr_single: 1858 if (f_send_cur_buf) { 1859 mwifiex_dbg(adapter, DATA, 1860 "data: %s: send current buffer %d\n", 1861 __func__, port); 1862 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, 1863 adapter->ioport + port); 1864 } 1865 1866 if (f_postcopy_cur_buf) { 1867 mwifiex_dbg(adapter, DATA, 1868 "data: %s: postcopy current buffer\n", 1869 __func__); 1870 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); 1871 } 1872 1873 return ret; 1874 } 1875 1876 /* 1877 * This function downloads data from driver to card. 1878 * 1879 * Both commands and data packets are transferred to the card by this 1880 * function. 1881 * 1882 * This function adds the SDIO specific header to the front of the buffer 1883 * before transferring. The header contains the length of the packet and 1884 * the type. The firmware handles the packets based upon this set type. 1885 */ 1886 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, 1887 u8 type, struct sk_buff *skb, 1888 struct mwifiex_tx_param *tx_param) 1889 { 1890 struct sdio_mmc_card *card = adapter->card; 1891 int ret; 1892 u32 buf_block_len; 1893 u32 blk_size; 1894 u32 port = CTRL_PORT; 1895 u8 *payload = (u8 *)skb->data; 1896 u32 pkt_len = skb->len; 1897 1898 /* Allocate buffer and copy payload */ 1899 blk_size = MWIFIEX_SDIO_BLOCK_SIZE; 1900 buf_block_len = (pkt_len + blk_size - 1) / blk_size; 1901 put_unaligned_le16((u16)pkt_len, payload + 0); 1902 put_unaligned_le16((u32)type, payload + 2); 1903 1904 1905 /* 1906 * This is SDIO specific header 1907 * u16 length, 1908 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, 1909 * MWIFIEX_TYPE_EVENT = 3) 1910 */ 1911 if (type == MWIFIEX_TYPE_DATA) { 1912 ret = mwifiex_get_wr_port_data(adapter, &port); 1913 if (ret) { 1914 mwifiex_dbg(adapter, ERROR, 1915 "%s: no wr_port available\n", 1916 __func__); 1917 return ret; 1918 } 1919 } else { 1920 adapter->cmd_sent = true; 1921 /* Type must be MWIFIEX_TYPE_CMD */ 1922 1923 if (pkt_len <= adapter->intf_hdr_len || 1924 pkt_len > MWIFIEX_UPLD_SIZE) 1925 mwifiex_dbg(adapter, ERROR, 1926 "%s: payload=%p, nb=%d\n", 1927 __func__, payload, pkt_len); 1928 1929 if (card->supports_sdio_new_mode) 1930 port = CMD_PORT_SLCT; 1931 } 1932 1933 /* Transfer data to card */ 1934 pkt_len = buf_block_len * blk_size; 1935 1936 if (tx_param) 1937 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, 1938 port, tx_param->next_pkt_len 1939 ); 1940 else 1941 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, 1942 port, 0); 1943 1944 if (ret) { 1945 if (type == MWIFIEX_TYPE_CMD) 1946 adapter->cmd_sent = false; 1947 if (type == MWIFIEX_TYPE_DATA) { 1948 adapter->data_sent = false; 1949 /* restore curr_wr_port in error cases */ 1950 card->curr_wr_port = port; 1951 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port); 1952 } 1953 } else { 1954 if (type == MWIFIEX_TYPE_DATA) { 1955 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) 1956 adapter->data_sent = true; 1957 else 1958 adapter->data_sent = false; 1959 } 1960 } 1961 1962 return ret; 1963 } 1964 1965 /* 1966 * This function allocates the MPA Tx and Rx buffers. 1967 */ 1968 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, 1969 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) 1970 { 1971 struct sdio_mmc_card *card = adapter->card; 1972 u32 rx_buf_size; 1973 int ret = 0; 1974 1975 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); 1976 if (!card->mpa_tx.buf) { 1977 ret = -1; 1978 goto error; 1979 } 1980 1981 card->mpa_tx.buf_size = mpa_tx_buf_size; 1982 1983 rx_buf_size = max_t(u32, mpa_rx_buf_size, 1984 (u32)SDIO_MAX_AGGR_BUF_SIZE); 1985 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL); 1986 if (!card->mpa_rx.buf) { 1987 ret = -1; 1988 goto error; 1989 } 1990 1991 card->mpa_rx.buf_size = rx_buf_size; 1992 1993 error: 1994 if (ret) { 1995 kfree(card->mpa_tx.buf); 1996 kfree(card->mpa_rx.buf); 1997 card->mpa_tx.buf_size = 0; 1998 card->mpa_rx.buf_size = 0; 1999 } 2000 2001 return ret; 2002 } 2003 2004 /* 2005 * This function unregisters the SDIO device. 2006 * 2007 * The SDIO IRQ is released, the function is disabled and driver 2008 * data is set to null. 2009 */ 2010 static void 2011 mwifiex_unregister_dev(struct mwifiex_adapter *adapter) 2012 { 2013 struct sdio_mmc_card *card = adapter->card; 2014 2015 if (adapter->card) { 2016 card->adapter = NULL; 2017 sdio_claim_host(card->func); 2018 sdio_disable_func(card->func); 2019 sdio_release_host(card->func); 2020 } 2021 } 2022 2023 /* 2024 * This function registers the SDIO device. 2025 * 2026 * SDIO IRQ is claimed, block size is set and driver data is initialized. 2027 */ 2028 static int mwifiex_register_dev(struct mwifiex_adapter *adapter) 2029 { 2030 int ret; 2031 struct sdio_mmc_card *card = adapter->card; 2032 struct sdio_func *func = card->func; 2033 2034 /* save adapter pointer in card */ 2035 card->adapter = adapter; 2036 adapter->tx_buf_size = card->tx_buf_size; 2037 2038 sdio_claim_host(func); 2039 2040 /* Set block size */ 2041 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); 2042 sdio_release_host(func); 2043 if (ret) { 2044 mwifiex_dbg(adapter, ERROR, 2045 "cannot set SDIO block size\n"); 2046 return ret; 2047 } 2048 2049 strcpy(adapter->fw_name, card->firmware); 2050 if (card->fw_dump_enh) { 2051 adapter->mem_type_mapping_tbl = generic_mem_type_map; 2052 adapter->num_mem_types = 1; 2053 } else { 2054 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl; 2055 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl); 2056 } 2057 2058 return 0; 2059 } 2060 2061 /* 2062 * This function initializes the SDIO driver. 2063 * 2064 * The following initializations steps are followed - 2065 * - Read the Host interrupt status register to acknowledge 2066 * the first interrupt got from bootloader 2067 * - Disable host interrupt mask register 2068 * - Get SDIO port 2069 * - Initialize SDIO variables in card 2070 * - Allocate MP registers 2071 * - Allocate MPA Tx and Rx buffers 2072 */ 2073 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) 2074 { 2075 struct sdio_mmc_card *card = adapter->card; 2076 const struct mwifiex_sdio_card_reg *reg = card->reg; 2077 int ret; 2078 u8 sdio_ireg; 2079 2080 sdio_set_drvdata(card->func, card); 2081 2082 /* 2083 * Read the host_int_status_reg for ACK the first interrupt got 2084 * from the bootloader. If we don't do this we get a interrupt 2085 * as soon as we register the irq. 2086 */ 2087 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); 2088 2089 /* Get SDIO ioport */ 2090 mwifiex_init_sdio_ioport(adapter); 2091 2092 /* Initialize SDIO variables in card */ 2093 card->mp_rd_bitmap = 0; 2094 card->mp_wr_bitmap = 0; 2095 card->curr_rd_port = reg->start_rd_port; 2096 card->curr_wr_port = reg->start_wr_port; 2097 2098 card->mp_data_port_mask = reg->data_port_mask; 2099 2100 card->mpa_tx.buf_len = 0; 2101 card->mpa_tx.pkt_cnt = 0; 2102 card->mpa_tx.start_port = 0; 2103 2104 card->mpa_tx.enabled = 1; 2105 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit; 2106 2107 card->mpa_rx.buf_len = 0; 2108 card->mpa_rx.pkt_cnt = 0; 2109 card->mpa_rx.start_port = 0; 2110 2111 card->mpa_rx.enabled = 1; 2112 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit; 2113 2114 /* Allocate buffers for SDIO MP-A */ 2115 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL); 2116 if (!card->mp_regs) 2117 return -ENOMEM; 2118 2119 /* Allocate skb pointer buffers */ 2120 card->mpa_rx.skb_arr = kcalloc(card->mp_agg_pkt_limit, sizeof(void *), 2121 GFP_KERNEL); 2122 if (!card->mpa_rx.skb_arr) { 2123 kfree(card->mp_regs); 2124 return -ENOMEM; 2125 } 2126 2127 card->mpa_rx.len_arr = kcalloc(card->mp_agg_pkt_limit, 2128 sizeof(*card->mpa_rx.len_arr), 2129 GFP_KERNEL); 2130 if (!card->mpa_rx.len_arr) { 2131 kfree(card->mp_regs); 2132 kfree(card->mpa_rx.skb_arr); 2133 return -ENOMEM; 2134 } 2135 2136 ret = mwifiex_alloc_sdio_mpa_buffers(adapter, 2137 card->mp_tx_agg_buf_size, 2138 card->mp_rx_agg_buf_size); 2139 2140 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */ 2141 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX || 2142 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) { 2143 /* Disable rx single port aggregation */ 2144 adapter->host_disable_sdio_rx_aggr = true; 2145 2146 ret = mwifiex_alloc_sdio_mpa_buffers 2147 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K, 2148 MWIFIEX_MP_AGGR_BUF_SIZE_32K); 2149 if (ret) { 2150 /* Disable multi port aggregation */ 2151 card->mpa_tx.enabled = 0; 2152 card->mpa_rx.enabled = 0; 2153 } 2154 } 2155 2156 adapter->auto_tdls = card->can_auto_tdls; 2157 adapter->ext_scan = card->can_ext_scan; 2158 return 0; 2159 } 2160 2161 /* 2162 * This function resets the MPA Tx and Rx buffers. 2163 */ 2164 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) 2165 { 2166 struct sdio_mmc_card *card = adapter->card; 2167 2168 MP_TX_AGGR_BUF_RESET(card); 2169 MP_RX_AGGR_BUF_RESET(card); 2170 } 2171 2172 /* 2173 * This function cleans up the allocated card buffers. 2174 * 2175 * The following are freed by this function - 2176 * - MP registers 2177 * - MPA Tx buffer 2178 * - MPA Rx buffer 2179 */ 2180 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) 2181 { 2182 struct sdio_mmc_card *card = adapter->card; 2183 2184 cancel_work_sync(&card->work); 2185 2186 kfree(card->mp_regs); 2187 kfree(card->mpa_rx.skb_arr); 2188 kfree(card->mpa_rx.len_arr); 2189 kfree(card->mpa_tx.buf); 2190 kfree(card->mpa_rx.buf); 2191 } 2192 2193 /* 2194 * This function updates the MP end port in card. 2195 */ 2196 static void 2197 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) 2198 { 2199 struct sdio_mmc_card *card = adapter->card; 2200 const struct mwifiex_sdio_card_reg *reg = card->reg; 2201 int i; 2202 2203 card->mp_end_port = port; 2204 2205 card->mp_data_port_mask = reg->data_port_mask; 2206 2207 if (reg->start_wr_port) { 2208 for (i = 1; i <= card->max_ports - card->mp_end_port; i++) 2209 card->mp_data_port_mask &= 2210 ~(1 << (card->max_ports - i)); 2211 } 2212 2213 card->curr_wr_port = reg->start_wr_port; 2214 2215 mwifiex_dbg(adapter, CMD, 2216 "cmd: mp_end_port %d, data port mask 0x%x\n", 2217 port, card->mp_data_port_mask); 2218 } 2219 2220 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) 2221 { 2222 struct sdio_mmc_card *card = adapter->card; 2223 struct sdio_func *func = card->func; 2224 int ret; 2225 2226 /* Prepare the adapter for the reset. */ 2227 mwifiex_shutdown_sw(adapter); 2228 clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags); 2229 clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags); 2230 2231 /* Run a HW reset of the SDIO interface. */ 2232 sdio_claim_host(func); 2233 ret = mmc_hw_reset(func->card->host); 2234 sdio_release_host(func); 2235 2236 switch (ret) { 2237 case 1: 2238 dev_dbg(&func->dev, "SDIO HW reset asynchronous\n"); 2239 complete_all(adapter->fw_done); 2240 break; 2241 case 0: 2242 ret = mwifiex_reinit_sw(adapter); 2243 if (ret) 2244 dev_err(&func->dev, "reinit failed: %d\n", ret); 2245 break; 2246 default: 2247 dev_err(&func->dev, "SDIO HW reset failed: %d\n", ret); 2248 break; 2249 } 2250 } 2251 2252 /* This function read/write firmware */ 2253 static enum 2254 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter, 2255 u8 doneflag) 2256 { 2257 struct sdio_mmc_card *card = adapter->card; 2258 int ret, tries; 2259 u8 ctrl_data = 0; 2260 2261 sdio_writeb(card->func, card->reg->fw_dump_host_ready, 2262 card->reg->fw_dump_ctrl, &ret); 2263 if (ret) { 2264 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n"); 2265 return RDWR_STATUS_FAILURE; 2266 } 2267 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 2268 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl, 2269 &ret); 2270 if (ret) { 2271 mwifiex_dbg(adapter, ERROR, "SDIO read err\n"); 2272 return RDWR_STATUS_FAILURE; 2273 } 2274 if (ctrl_data == FW_DUMP_DONE) 2275 break; 2276 if (doneflag && ctrl_data == doneflag) 2277 return RDWR_STATUS_DONE; 2278 if (ctrl_data != card->reg->fw_dump_host_ready) { 2279 mwifiex_dbg(adapter, WARN, 2280 "The ctrl reg was changed, re-try again\n"); 2281 sdio_writeb(card->func, card->reg->fw_dump_host_ready, 2282 card->reg->fw_dump_ctrl, &ret); 2283 if (ret) { 2284 mwifiex_dbg(adapter, ERROR, "SDIO write err\n"); 2285 return RDWR_STATUS_FAILURE; 2286 } 2287 } 2288 usleep_range(100, 200); 2289 } 2290 if (ctrl_data == card->reg->fw_dump_host_ready) { 2291 mwifiex_dbg(adapter, ERROR, 2292 "Fail to pull ctrl_data\n"); 2293 return RDWR_STATUS_FAILURE; 2294 } 2295 2296 return RDWR_STATUS_SUCCESS; 2297 } 2298 2299 /* This function dump firmware memory to file */ 2300 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter) 2301 { 2302 struct sdio_mmc_card *card = adapter->card; 2303 int ret = 0; 2304 unsigned int reg, reg_start, reg_end; 2305 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0; 2306 enum rdwr_status stat; 2307 u32 memory_size; 2308 2309 if (!card->can_dump_fw) 2310 return; 2311 2312 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) { 2313 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 2314 2315 if (entry->mem_ptr) { 2316 vfree(entry->mem_ptr); 2317 entry->mem_ptr = NULL; 2318 } 2319 entry->mem_size = 0; 2320 } 2321 2322 mwifiex_pm_wakeup_card(adapter); 2323 sdio_claim_host(card->func); 2324 2325 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n"); 2326 2327 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); 2328 if (stat == RDWR_STATUS_FAILURE) 2329 goto done; 2330 2331 reg = card->reg->fw_dump_start; 2332 /* Read the number of the memories which will dump */ 2333 dump_num = sdio_readb(card->func, reg, &ret); 2334 if (ret) { 2335 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n"); 2336 goto done; 2337 } 2338 2339 /* Read the length of every memory which will dump */ 2340 for (idx = 0; idx < dump_num; idx++) { 2341 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 2342 2343 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); 2344 if (stat == RDWR_STATUS_FAILURE) 2345 goto done; 2346 2347 memory_size = 0; 2348 reg = card->reg->fw_dump_start; 2349 for (i = 0; i < 4; i++) { 2350 read_reg = sdio_readb(card->func, reg, &ret); 2351 if (ret) { 2352 mwifiex_dbg(adapter, ERROR, "SDIO read err\n"); 2353 goto done; 2354 } 2355 memory_size |= (read_reg << i*8); 2356 reg++; 2357 } 2358 2359 if (memory_size == 0) { 2360 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n"); 2361 ret = mwifiex_write_reg(adapter, 2362 card->reg->fw_dump_ctrl, 2363 FW_DUMP_READ_DONE); 2364 if (ret) { 2365 mwifiex_dbg(adapter, ERROR, "SDIO write err\n"); 2366 return; 2367 } 2368 break; 2369 } 2370 2371 mwifiex_dbg(adapter, DUMP, 2372 "%s_SIZE=0x%x\n", entry->mem_name, memory_size); 2373 entry->mem_ptr = vmalloc(memory_size + 1); 2374 entry->mem_size = memory_size; 2375 if (!entry->mem_ptr) { 2376 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n", 2377 entry->mem_name); 2378 goto done; 2379 } 2380 dbg_ptr = entry->mem_ptr; 2381 end_ptr = dbg_ptr + memory_size; 2382 2383 doneflag = entry->done_flag; 2384 mwifiex_dbg(adapter, DUMP, 2385 "Start %s output, please wait...\n", 2386 entry->mem_name); 2387 2388 do { 2389 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); 2390 if (stat == RDWR_STATUS_FAILURE) 2391 goto done; 2392 2393 reg_start = card->reg->fw_dump_start; 2394 reg_end = card->reg->fw_dump_end; 2395 for (reg = reg_start; reg <= reg_end; reg++) { 2396 *dbg_ptr = sdio_readb(card->func, reg, &ret); 2397 if (ret) { 2398 mwifiex_dbg(adapter, ERROR, 2399 "SDIO read err\n"); 2400 goto done; 2401 } 2402 if (dbg_ptr < end_ptr) 2403 dbg_ptr++; 2404 else 2405 mwifiex_dbg(adapter, ERROR, 2406 "Allocated buf not enough\n"); 2407 } 2408 2409 if (stat != RDWR_STATUS_DONE) 2410 continue; 2411 2412 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n", 2413 entry->mem_name, dbg_ptr - entry->mem_ptr); 2414 break; 2415 } while (1); 2416 } 2417 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n"); 2418 2419 done: 2420 sdio_release_host(card->func); 2421 } 2422 2423 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter) 2424 { 2425 struct sdio_mmc_card *card = adapter->card; 2426 struct memory_type_mapping *entry = &generic_mem_type_map[0]; 2427 unsigned int reg, reg_start, reg_end; 2428 u8 start_flag = 0, done_flag = 0; 2429 u8 *dbg_ptr, *end_ptr; 2430 enum rdwr_status stat; 2431 int ret = -1, tries; 2432 2433 if (!card->fw_dump_enh) 2434 return; 2435 2436 if (entry->mem_ptr) { 2437 vfree(entry->mem_ptr); 2438 entry->mem_ptr = NULL; 2439 } 2440 entry->mem_size = 0; 2441 2442 mwifiex_pm_wakeup_card(adapter); 2443 sdio_claim_host(card->func); 2444 2445 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n"); 2446 2447 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag); 2448 if (stat == RDWR_STATUS_FAILURE) 2449 goto done; 2450 2451 reg_start = card->reg->fw_dump_start; 2452 reg_end = card->reg->fw_dump_end; 2453 for (reg = reg_start; reg <= reg_end; reg++) { 2454 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 2455 start_flag = sdio_readb(card->func, reg, &ret); 2456 if (ret) { 2457 mwifiex_dbg(adapter, ERROR, 2458 "SDIO read err\n"); 2459 goto done; 2460 } 2461 if (start_flag == 0) 2462 break; 2463 if (tries == MAX_POLL_TRIES) { 2464 mwifiex_dbg(adapter, ERROR, 2465 "FW not ready to dump\n"); 2466 ret = -1; 2467 goto done; 2468 } 2469 } 2470 usleep_range(100, 200); 2471 } 2472 2473 entry->mem_ptr = vmalloc(0xf0000 + 1); 2474 if (!entry->mem_ptr) { 2475 ret = -1; 2476 goto done; 2477 } 2478 dbg_ptr = entry->mem_ptr; 2479 entry->mem_size = 0xf0000; 2480 end_ptr = dbg_ptr + entry->mem_size; 2481 2482 done_flag = entry->done_flag; 2483 mwifiex_dbg(adapter, DUMP, 2484 "Start %s output, please wait...\n", entry->mem_name); 2485 2486 while (true) { 2487 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag); 2488 if (stat == RDWR_STATUS_FAILURE) 2489 goto done; 2490 for (reg = reg_start; reg <= reg_end; reg++) { 2491 *dbg_ptr = sdio_readb(card->func, reg, &ret); 2492 if (ret) { 2493 mwifiex_dbg(adapter, ERROR, 2494 "SDIO read err\n"); 2495 goto done; 2496 } 2497 dbg_ptr++; 2498 if (dbg_ptr >= end_ptr) { 2499 u8 *tmp_ptr; 2500 2501 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1); 2502 if (!tmp_ptr) 2503 goto done; 2504 2505 memcpy(tmp_ptr, entry->mem_ptr, 2506 entry->mem_size); 2507 vfree(entry->mem_ptr); 2508 entry->mem_ptr = tmp_ptr; 2509 tmp_ptr = NULL; 2510 dbg_ptr = entry->mem_ptr + entry->mem_size; 2511 entry->mem_size += 0x4000; 2512 end_ptr = entry->mem_ptr + entry->mem_size; 2513 } 2514 } 2515 if (stat == RDWR_STATUS_DONE) { 2516 entry->mem_size = dbg_ptr - entry->mem_ptr; 2517 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n", 2518 entry->mem_name, entry->mem_size); 2519 ret = 0; 2520 break; 2521 } 2522 } 2523 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n"); 2524 2525 done: 2526 if (ret) { 2527 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n"); 2528 if (entry->mem_ptr) { 2529 vfree(entry->mem_ptr); 2530 entry->mem_ptr = NULL; 2531 } 2532 entry->mem_size = 0; 2533 } 2534 sdio_release_host(card->func); 2535 } 2536 2537 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter) 2538 { 2539 struct sdio_mmc_card *card = adapter->card; 2540 2541 adapter->devdump_data = vzalloc(MWIFIEX_FW_DUMP_SIZE); 2542 if (!adapter->devdump_data) { 2543 mwifiex_dbg(adapter, ERROR, 2544 "vzalloc devdump data failure!\n"); 2545 return; 2546 } 2547 2548 mwifiex_drv_info_dump(adapter); 2549 if (card->fw_dump_enh) 2550 mwifiex_sdio_generic_fw_dump(adapter); 2551 else 2552 mwifiex_sdio_fw_dump(adapter); 2553 mwifiex_prepare_fw_dump_info(adapter); 2554 mwifiex_upload_device_dump(adapter); 2555 } 2556 2557 static void mwifiex_sdio_work(struct work_struct *work) 2558 { 2559 struct sdio_mmc_card *card = 2560 container_of(work, struct sdio_mmc_card, work); 2561 2562 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, 2563 &card->work_flags)) 2564 mwifiex_sdio_device_dump_work(card->adapter); 2565 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, 2566 &card->work_flags)) 2567 mwifiex_sdio_card_reset_work(card->adapter); 2568 } 2569 2570 /* This function resets the card */ 2571 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter) 2572 { 2573 struct sdio_mmc_card *card = adapter->card; 2574 2575 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags)) 2576 schedule_work(&card->work); 2577 } 2578 2579 /* This function dumps FW information */ 2580 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter) 2581 { 2582 struct sdio_mmc_card *card = adapter->card; 2583 2584 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, 2585 &card->work_flags)) 2586 schedule_work(&card->work); 2587 } 2588 2589 /* Function to dump SDIO function registers and SDIO scratch registers in case 2590 * of FW crash 2591 */ 2592 static int 2593 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf) 2594 { 2595 char *p = drv_buf; 2596 struct sdio_mmc_card *cardp = adapter->card; 2597 int ret = 0; 2598 u8 count, func, data, index = 0, size = 0; 2599 u8 reg, reg_start, reg_end; 2600 char buf[256], *ptr; 2601 2602 if (!p) 2603 return 0; 2604 2605 mwifiex_dbg(adapter, MSG, "SDIO register dump start\n"); 2606 2607 mwifiex_pm_wakeup_card(adapter); 2608 2609 sdio_claim_host(cardp->func); 2610 2611 for (count = 0; count < 5; count++) { 2612 memset(buf, 0, sizeof(buf)); 2613 ptr = buf; 2614 2615 switch (count) { 2616 case 0: 2617 /* Read the registers of SDIO function0 */ 2618 func = count; 2619 reg_start = 0; 2620 reg_end = 9; 2621 break; 2622 case 1: 2623 /* Read the registers of SDIO function1 */ 2624 func = count; 2625 reg_start = cardp->reg->func1_dump_reg_start; 2626 reg_end = cardp->reg->func1_dump_reg_end; 2627 break; 2628 case 2: 2629 index = 0; 2630 func = 1; 2631 reg_start = cardp->reg->func1_spec_reg_table[index++]; 2632 size = cardp->reg->func1_spec_reg_num; 2633 reg_end = cardp->reg->func1_spec_reg_table[size-1]; 2634 break; 2635 default: 2636 /* Read the scratch registers of SDIO function1 */ 2637 if (count == 4) 2638 mdelay(100); 2639 func = 1; 2640 reg_start = cardp->reg->func1_scratch_reg; 2641 reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE; 2642 } 2643 2644 if (count != 2) 2645 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ", 2646 func, reg_start, reg_end); 2647 else 2648 ptr += sprintf(ptr, "SDIO Func%d: ", func); 2649 2650 for (reg = reg_start; reg <= reg_end;) { 2651 if (func == 0) 2652 data = sdio_f0_readb(cardp->func, reg, &ret); 2653 else 2654 data = sdio_readb(cardp->func, reg, &ret); 2655 2656 if (count == 2) 2657 ptr += sprintf(ptr, "(%#x) ", reg); 2658 if (!ret) { 2659 ptr += sprintf(ptr, "%02x ", data); 2660 } else { 2661 ptr += sprintf(ptr, "ERR"); 2662 break; 2663 } 2664 2665 if (count == 2 && reg < reg_end) 2666 reg = cardp->reg->func1_spec_reg_table[index++]; 2667 else 2668 reg++; 2669 } 2670 2671 mwifiex_dbg(adapter, MSG, "%s\n", buf); 2672 p += sprintf(p, "%s\n", buf); 2673 } 2674 2675 sdio_release_host(cardp->func); 2676 2677 mwifiex_dbg(adapter, MSG, "SDIO register dump end\n"); 2678 2679 return p - drv_buf; 2680 } 2681 2682 /* sdio device/function initialization, code is extracted 2683 * from init_if handler and register_dev handler. 2684 */ 2685 static void mwifiex_sdio_up_dev(struct mwifiex_adapter *adapter) 2686 { 2687 struct sdio_mmc_card *card = adapter->card; 2688 u8 sdio_ireg; 2689 2690 sdio_claim_host(card->func); 2691 sdio_enable_func(card->func); 2692 sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); 2693 sdio_release_host(card->func); 2694 2695 /* tx_buf_size might be changed to 3584 by firmware during 2696 * data transfer, we will reset to default size. 2697 */ 2698 adapter->tx_buf_size = card->tx_buf_size; 2699 2700 /* Read the host_int_status_reg for ACK the first interrupt got 2701 * from the bootloader. If we don't do this we get a interrupt 2702 * as soon as we register the irq. 2703 */ 2704 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); 2705 2706 mwifiex_init_sdio_ioport(adapter); 2707 } 2708 2709 static struct mwifiex_if_ops sdio_ops = { 2710 .init_if = mwifiex_init_sdio, 2711 .cleanup_if = mwifiex_cleanup_sdio, 2712 .check_fw_status = mwifiex_check_fw_status, 2713 .check_winner_status = mwifiex_check_winner_status, 2714 .prog_fw = mwifiex_prog_fw_w_helper, 2715 .register_dev = mwifiex_register_dev, 2716 .unregister_dev = mwifiex_unregister_dev, 2717 .enable_int = mwifiex_sdio_enable_host_int, 2718 .disable_int = mwifiex_sdio_disable_host_int, 2719 .process_int_status = mwifiex_process_int_status, 2720 .host_to_card = mwifiex_sdio_host_to_card, 2721 .wakeup = mwifiex_pm_wakeup_card, 2722 .wakeup_complete = mwifiex_pm_wakeup_card_complete, 2723 2724 /* SDIO specific */ 2725 .update_mp_end_port = mwifiex_update_mp_end_port, 2726 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, 2727 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete, 2728 .event_complete = mwifiex_sdio_event_complete, 2729 .dnld_fw = mwifiex_sdio_dnld_fw, 2730 .card_reset = mwifiex_sdio_card_reset, 2731 .reg_dump = mwifiex_sdio_reg_dump, 2732 .device_dump = mwifiex_sdio_device_dump, 2733 .deaggr_pkt = mwifiex_deaggr_sdio_pkt, 2734 .up_dev = mwifiex_sdio_up_dev, 2735 }; 2736 2737 module_driver(mwifiex_sdio, sdio_register_driver, sdio_unregister_driver); 2738 2739 MODULE_AUTHOR("Marvell International Ltd."); 2740 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); 2741 MODULE_VERSION(SDIO_VERSION); 2742 MODULE_LICENSE("GPL v2"); 2743 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME); 2744 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME); 2745 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME); 2746 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME); 2747 MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME); 2748 MODULE_FIRMWARE(SD8977_DEFAULT_FW_NAME); 2749 MODULE_FIRMWARE(SD8987_DEFAULT_FW_NAME); 2750 MODULE_FIRMWARE(SD8997_DEFAULT_FW_NAME); 2751