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