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