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 (!adapter->is_suspended) { 185 mwifiex_dbg(adapter, WARN, 186 "device already resumed\n"); 187 return 0; 188 } 189 190 adapter->is_suspended = false; 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 (adapter->is_suspended) { 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 cancel_work_sync(&card->work); 391 392 mwifiex_dbg(adapter, INFO, "info: SDIO func num=%d\n", func->num); 393 394 ret = mwifiex_sdio_read_fw_status(adapter, &firmware_stat); 395 if (firmware_stat == FIRMWARE_READY_SDIO && !adapter->mfg_mode) { 396 mwifiex_deauthenticate_all(adapter); 397 398 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 399 mwifiex_disable_auto_ds(priv); 400 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN); 401 } 402 403 mwifiex_remove_card(adapter); 404 } 405 406 /* 407 * SDIO suspend. 408 * 409 * Kernel needs to suspend all functions separately. Therefore all 410 * registered functions must have drivers with suspend and resume 411 * methods. Failing that the kernel simply removes the whole card. 412 * 413 * If already not suspended, this function allocates and sends a host 414 * sleep activate request to the firmware and turns off the traffic. 415 */ 416 static int mwifiex_sdio_suspend(struct device *dev) 417 { 418 struct sdio_func *func = dev_to_sdio_func(dev); 419 struct sdio_mmc_card *card; 420 struct mwifiex_adapter *adapter; 421 mmc_pm_flag_t pm_flag = 0; 422 int ret = 0; 423 424 pm_flag = sdio_get_host_pm_caps(func); 425 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", 426 sdio_func_id(func), pm_flag); 427 if (!(pm_flag & MMC_PM_KEEP_POWER)) { 428 dev_err(dev, "%s: cannot remain alive while host is" 429 " suspended\n", sdio_func_id(func)); 430 return -ENOSYS; 431 } 432 433 card = sdio_get_drvdata(func); 434 if (!card) { 435 dev_err(dev, "suspend: invalid card\n"); 436 return 0; 437 } 438 439 /* Might still be loading firmware */ 440 wait_for_completion(&card->fw_done); 441 442 adapter = card->adapter; 443 if (!adapter) { 444 dev_err(dev, "adapter is not valid\n"); 445 return 0; 446 } 447 448 mwifiex_enable_wake(adapter); 449 450 /* Enable the Host Sleep */ 451 if (!mwifiex_enable_hs(adapter)) { 452 mwifiex_dbg(adapter, ERROR, 453 "cmd: failed to suspend\n"); 454 adapter->hs_enabling = false; 455 mwifiex_disable_wake(adapter); 456 return -EFAULT; 457 } 458 459 mwifiex_dbg(adapter, INFO, 460 "cmd: suspend with MMC_PM_KEEP_POWER\n"); 461 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 462 463 /* Indicate device suspended */ 464 adapter->is_suspended = true; 465 adapter->hs_enabling = false; 466 467 return ret; 468 } 469 470 /* Device ID for SD8786 */ 471 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116) 472 /* Device ID for SD8787 */ 473 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) 474 /* Device ID for SD8797 */ 475 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129) 476 /* Device ID for SD8897 */ 477 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d) 478 /* Device ID for SD8887 */ 479 #define SDIO_DEVICE_ID_MARVELL_8887 (0x9135) 480 /* Device ID for SD8801 */ 481 #define SDIO_DEVICE_ID_MARVELL_8801 (0x9139) 482 /* Device ID for SD8997 */ 483 #define SDIO_DEVICE_ID_MARVELL_8997 (0x9141) 484 485 486 /* WLAN IDs */ 487 static const struct sdio_device_id mwifiex_ids[] = { 488 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786), 489 .driver_data = (unsigned long) &mwifiex_sdio_sd8786}, 490 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787), 491 .driver_data = (unsigned long) &mwifiex_sdio_sd8787}, 492 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797), 493 .driver_data = (unsigned long) &mwifiex_sdio_sd8797}, 494 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897), 495 .driver_data = (unsigned long) &mwifiex_sdio_sd8897}, 496 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887), 497 .driver_data = (unsigned long)&mwifiex_sdio_sd8887}, 498 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801), 499 .driver_data = (unsigned long)&mwifiex_sdio_sd8801}, 500 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997), 501 .driver_data = (unsigned long)&mwifiex_sdio_sd8997}, 502 {}, 503 }; 504 505 MODULE_DEVICE_TABLE(sdio, mwifiex_ids); 506 507 static const struct dev_pm_ops mwifiex_sdio_pm_ops = { 508 .suspend = mwifiex_sdio_suspend, 509 .resume = mwifiex_sdio_resume, 510 }; 511 512 static struct sdio_driver mwifiex_sdio = { 513 .name = "mwifiex_sdio", 514 .id_table = mwifiex_ids, 515 .probe = mwifiex_sdio_probe, 516 .remove = mwifiex_sdio_remove, 517 .drv = { 518 .owner = THIS_MODULE, 519 .pm = &mwifiex_sdio_pm_ops, 520 } 521 }; 522 523 /* 524 * This function wakes up the card. 525 * 526 * A host power up command is written to the card configuration 527 * register to wake up the card. 528 */ 529 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) 530 { 531 mwifiex_dbg(adapter, EVENT, 532 "event: wakeup device...\n"); 533 534 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); 535 } 536 537 /* 538 * This function is called after the card has woken up. 539 * 540 * The card configuration register is reset. 541 */ 542 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) 543 { 544 mwifiex_dbg(adapter, EVENT, 545 "cmd: wakeup device completed\n"); 546 547 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); 548 } 549 550 static int mwifiex_sdio_dnld_fw(struct mwifiex_adapter *adapter, 551 struct mwifiex_fw_image *fw) 552 { 553 struct sdio_mmc_card *card = adapter->card; 554 int ret; 555 556 sdio_claim_host(card->func); 557 ret = mwifiex_dnld_fw(adapter, fw); 558 sdio_release_host(card->func); 559 560 return ret; 561 } 562 563 /* 564 * This function is used to initialize IO ports for the 565 * chipsets supporting SDIO new mode eg SD8897. 566 */ 567 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter) 568 { 569 u8 reg; 570 struct sdio_mmc_card *card = adapter->card; 571 572 adapter->ioport = MEM_PORT; 573 574 /* enable sdio new mode */ 575 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®)) 576 return -1; 577 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg, 578 reg | CMD53_NEW_MODE)) 579 return -1; 580 581 /* Configure cmd port and enable reading rx length from the register */ 582 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, ®)) 583 return -1; 584 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0, 585 reg | CMD_PORT_RD_LEN_EN)) 586 return -1; 587 588 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is 589 * completed 590 */ 591 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, ®)) 592 return -1; 593 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1, 594 reg | CMD_PORT_AUTO_EN)) 595 return -1; 596 597 return 0; 598 } 599 600 /* This function initializes the IO ports. 601 * 602 * The following operations are performed - 603 * - Read the IO ports (0, 1 and 2) 604 * - Set host interrupt Reset-To-Read to clear 605 * - Set auto re-enable interrupt 606 */ 607 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) 608 { 609 u8 reg; 610 struct sdio_mmc_card *card = adapter->card; 611 612 adapter->ioport = 0; 613 614 if (card->supports_sdio_new_mode) { 615 if (mwifiex_init_sdio_new_mode(adapter)) 616 return -1; 617 goto cont; 618 } 619 620 /* Read the IO port */ 621 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, ®)) 622 adapter->ioport |= (reg & 0xff); 623 else 624 return -1; 625 626 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, ®)) 627 adapter->ioport |= ((reg & 0xff) << 8); 628 else 629 return -1; 630 631 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, ®)) 632 adapter->ioport |= ((reg & 0xff) << 16); 633 else 634 return -1; 635 cont: 636 mwifiex_dbg(adapter, INFO, 637 "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); 638 639 /* Set Host interrupt reset to read to clear */ 640 if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®)) 641 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg, 642 reg | card->reg->sdio_int_mask); 643 else 644 return -1; 645 646 /* Dnld/Upld ready set to auto reset */ 647 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®)) 648 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg, 649 reg | AUTO_RE_ENABLE_INT); 650 else 651 return -1; 652 653 return 0; 654 } 655 656 /* 657 * This function sends data to the card. 658 */ 659 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, 660 u8 *payload, u32 pkt_len, u32 port) 661 { 662 u32 i = 0; 663 int ret; 664 665 do { 666 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); 667 if (ret) { 668 i++; 669 mwifiex_dbg(adapter, ERROR, 670 "host_to_card, write iomem\t" 671 "(%d) failed: %d\n", i, ret); 672 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) 673 mwifiex_dbg(adapter, ERROR, 674 "write CFG reg failed\n"); 675 676 ret = -1; 677 if (i > MAX_WRITE_IOMEM_RETRY) 678 return ret; 679 } 680 } while (ret == -1); 681 682 return ret; 683 } 684 685 /* 686 * This function gets the read port. 687 * 688 * If control port bit is set in MP read bitmap, the control port 689 * is returned, otherwise the current read port is returned and 690 * the value is increased (provided it does not reach the maximum 691 * limit, in which case it is reset to 1) 692 */ 693 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) 694 { 695 struct sdio_mmc_card *card = adapter->card; 696 const struct mwifiex_sdio_card_reg *reg = card->reg; 697 u32 rd_bitmap = card->mp_rd_bitmap; 698 699 mwifiex_dbg(adapter, DATA, 700 "data: mp_rd_bitmap=0x%08x\n", rd_bitmap); 701 702 if (card->supports_sdio_new_mode) { 703 if (!(rd_bitmap & reg->data_port_mask)) 704 return -1; 705 } else { 706 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask))) 707 return -1; 708 } 709 710 if ((card->has_control_mask) && 711 (card->mp_rd_bitmap & CTRL_PORT_MASK)) { 712 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK); 713 *port = CTRL_PORT; 714 mwifiex_dbg(adapter, DATA, 715 "data: port=%d mp_rd_bitmap=0x%08x\n", 716 *port, card->mp_rd_bitmap); 717 return 0; 718 } 719 720 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port))) 721 return -1; 722 723 /* We are now handling the SDIO data ports */ 724 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port)); 725 *port = card->curr_rd_port; 726 727 if (++card->curr_rd_port == card->max_ports) 728 card->curr_rd_port = reg->start_rd_port; 729 730 mwifiex_dbg(adapter, DATA, 731 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n", 732 *port, rd_bitmap, card->mp_rd_bitmap); 733 734 return 0; 735 } 736 737 /* 738 * This function gets the write port for data. 739 * 740 * The current write port is returned if available and the value is 741 * increased (provided it does not reach the maximum limit, in which 742 * case it is reset to 1) 743 */ 744 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port) 745 { 746 struct sdio_mmc_card *card = adapter->card; 747 const struct mwifiex_sdio_card_reg *reg = card->reg; 748 u32 wr_bitmap = card->mp_wr_bitmap; 749 750 mwifiex_dbg(adapter, DATA, 751 "data: mp_wr_bitmap=0x%08x\n", wr_bitmap); 752 753 if (!(wr_bitmap & card->mp_data_port_mask)) { 754 adapter->data_sent = true; 755 return -EBUSY; 756 } 757 758 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { 759 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port)); 760 *port = card->curr_wr_port; 761 if (++card->curr_wr_port == card->mp_end_port) 762 card->curr_wr_port = reg->start_wr_port; 763 } else { 764 adapter->data_sent = true; 765 return -EBUSY; 766 } 767 768 if ((card->has_control_mask) && (*port == CTRL_PORT)) { 769 mwifiex_dbg(adapter, ERROR, 770 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", 771 *port, card->curr_wr_port, wr_bitmap, 772 card->mp_wr_bitmap); 773 return -1; 774 } 775 776 mwifiex_dbg(adapter, DATA, 777 "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", 778 *port, wr_bitmap, card->mp_wr_bitmap); 779 780 return 0; 781 } 782 783 /* 784 * This function polls the card status. 785 */ 786 static int 787 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) 788 { 789 struct sdio_mmc_card *card = adapter->card; 790 u32 tries; 791 u8 cs; 792 793 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 794 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs)) 795 break; 796 else if ((cs & bits) == bits) 797 return 0; 798 799 usleep_range(10, 20); 800 } 801 802 mwifiex_dbg(adapter, ERROR, 803 "poll card status failed, tries = %d\n", tries); 804 805 return -1; 806 } 807 808 /* 809 * This function disables the host interrupt. 810 * 811 * The host interrupt mask is read, the disable bit is reset and 812 * written back to the card host interrupt mask register. 813 */ 814 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) 815 { 816 struct sdio_mmc_card *card = adapter->card; 817 struct sdio_func *func = card->func; 818 819 sdio_claim_host(func); 820 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0); 821 sdio_release_irq(func); 822 sdio_release_host(func); 823 } 824 825 /* 826 * This function reads the interrupt status from card. 827 */ 828 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) 829 { 830 struct sdio_mmc_card *card = adapter->card; 831 u8 sdio_ireg; 832 unsigned long flags; 833 834 if (mwifiex_read_data_sync(adapter, card->mp_regs, 835 card->reg->max_mp_regs, 836 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) { 837 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n"); 838 return; 839 } 840 841 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg]; 842 if (sdio_ireg) { 843 /* 844 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS 845 * For SDIO new mode CMD port interrupts 846 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or 847 * UP_LD_CMD_PORT_HOST_INT_STATUS 848 * Clear the interrupt status register 849 */ 850 mwifiex_dbg(adapter, INTR, 851 "int: sdio_ireg = %#x\n", sdio_ireg); 852 spin_lock_irqsave(&adapter->int_lock, flags); 853 adapter->int_status |= sdio_ireg; 854 spin_unlock_irqrestore(&adapter->int_lock, flags); 855 } 856 } 857 858 /* 859 * SDIO interrupt handler. 860 * 861 * This function reads the interrupt status from firmware and handles 862 * the interrupt in current thread (ksdioirqd) right away. 863 */ 864 static void 865 mwifiex_sdio_interrupt(struct sdio_func *func) 866 { 867 struct mwifiex_adapter *adapter; 868 struct sdio_mmc_card *card; 869 870 card = sdio_get_drvdata(func); 871 if (!card || !card->adapter) { 872 pr_err("int: func=%p card=%p adapter=%p\n", 873 func, card, card ? card->adapter : NULL); 874 return; 875 } 876 adapter = card->adapter; 877 878 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) 879 adapter->ps_state = PS_STATE_AWAKE; 880 881 mwifiex_interrupt_status(adapter); 882 mwifiex_main_process(adapter); 883 } 884 885 /* 886 * This function enables the host interrupt. 887 * 888 * The host interrupt enable mask is written to the card 889 * host interrupt mask register. 890 */ 891 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) 892 { 893 struct sdio_mmc_card *card = adapter->card; 894 struct sdio_func *func = card->func; 895 int ret; 896 897 sdio_claim_host(func); 898 899 /* Request the SDIO IRQ */ 900 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); 901 if (ret) { 902 mwifiex_dbg(adapter, ERROR, 903 "claim irq failed: ret=%d\n", ret); 904 goto out; 905 } 906 907 /* Simply write the mask to the register */ 908 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 909 card->reg->host_int_enable); 910 if (ret) { 911 mwifiex_dbg(adapter, ERROR, 912 "enable host interrupt failed\n"); 913 sdio_release_irq(func); 914 } 915 916 out: 917 sdio_release_host(func); 918 return ret; 919 } 920 921 /* 922 * This function sends a data buffer to the card. 923 */ 924 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, 925 u32 *type, u8 *buffer, 926 u32 npayload, u32 ioport) 927 { 928 int ret; 929 u32 nb; 930 931 if (!buffer) { 932 mwifiex_dbg(adapter, ERROR, 933 "%s: buffer is NULL\n", __func__); 934 return -1; 935 } 936 937 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); 938 939 if (ret) { 940 mwifiex_dbg(adapter, ERROR, 941 "%s: read iomem failed: %d\n", __func__, 942 ret); 943 return -1; 944 } 945 946 nb = le16_to_cpu(*(__le16 *) (buffer)); 947 if (nb > npayload) { 948 mwifiex_dbg(adapter, ERROR, 949 "%s: invalid packet, nb=%d npayload=%d\n", 950 __func__, nb, npayload); 951 return -1; 952 } 953 954 *type = le16_to_cpu(*(__le16 *) (buffer + 2)); 955 956 return ret; 957 } 958 959 /* 960 * This function downloads the firmware to the card. 961 * 962 * Firmware is downloaded to the card in blocks. Every block download 963 * is tested for CRC errors, and retried a number of times before 964 * returning failure. 965 */ 966 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, 967 struct mwifiex_fw_image *fw) 968 { 969 struct sdio_mmc_card *card = adapter->card; 970 const struct mwifiex_sdio_card_reg *reg = card->reg; 971 int ret; 972 u8 *firmware = fw->fw_buf; 973 u32 firmware_len = fw->fw_len; 974 u32 offset = 0; 975 u8 base0, base1; 976 u8 *fwbuf; 977 u16 len = 0; 978 u32 txlen, tx_blocks = 0, tries; 979 u32 i = 0; 980 981 if (!firmware_len) { 982 mwifiex_dbg(adapter, ERROR, 983 "firmware image not found! Terminating download\n"); 984 return -1; 985 } 986 987 mwifiex_dbg(adapter, INFO, 988 "info: downloading FW image (%d bytes)\n", 989 firmware_len); 990 991 /* Assume that the allocated buffer is 8-byte aligned */ 992 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); 993 if (!fwbuf) 994 return -ENOMEM; 995 996 sdio_claim_host(card->func); 997 998 /* Perform firmware data transfer */ 999 do { 1000 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY 1001 bits */ 1002 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | 1003 DN_LD_CARD_RDY); 1004 if (ret) { 1005 mwifiex_dbg(adapter, ERROR, 1006 "FW download with helper:\t" 1007 "poll status timeout @ %d\n", offset); 1008 goto done; 1009 } 1010 1011 /* More data? */ 1012 if (offset >= firmware_len) 1013 break; 1014 1015 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 1016 ret = mwifiex_read_reg(adapter, reg->base_0_reg, 1017 &base0); 1018 if (ret) { 1019 mwifiex_dbg(adapter, ERROR, 1020 "dev BASE0 register read failed:\t" 1021 "base0=%#04X(%d). Terminating dnld\n", 1022 base0, base0); 1023 goto done; 1024 } 1025 ret = mwifiex_read_reg(adapter, reg->base_1_reg, 1026 &base1); 1027 if (ret) { 1028 mwifiex_dbg(adapter, ERROR, 1029 "dev BASE1 register read failed:\t" 1030 "base1=%#04X(%d). Terminating dnld\n", 1031 base1, base1); 1032 goto done; 1033 } 1034 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); 1035 1036 if (len) 1037 break; 1038 1039 usleep_range(10, 20); 1040 } 1041 1042 if (!len) { 1043 break; 1044 } else if (len > MWIFIEX_UPLD_SIZE) { 1045 mwifiex_dbg(adapter, ERROR, 1046 "FW dnld failed @ %d, invalid length %d\n", 1047 offset, len); 1048 ret = -1; 1049 goto done; 1050 } 1051 1052 txlen = len; 1053 1054 if (len & BIT(0)) { 1055 i++; 1056 if (i > MAX_WRITE_IOMEM_RETRY) { 1057 mwifiex_dbg(adapter, ERROR, 1058 "FW dnld failed @ %d, over max retry\n", 1059 offset); 1060 ret = -1; 1061 goto done; 1062 } 1063 mwifiex_dbg(adapter, ERROR, 1064 "CRC indicated by the helper:\t" 1065 "len = 0x%04X, txlen = %d\n", len, txlen); 1066 len &= ~BIT(0); 1067 /* Setting this to 0 to resend from same offset */ 1068 txlen = 0; 1069 } else { 1070 i = 0; 1071 1072 /* Set blocksize to transfer - checking for last 1073 block */ 1074 if (firmware_len - offset < txlen) 1075 txlen = firmware_len - offset; 1076 1077 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1) 1078 / MWIFIEX_SDIO_BLOCK_SIZE; 1079 1080 /* Copy payload to buffer */ 1081 memmove(fwbuf, &firmware[offset], txlen); 1082 } 1083 1084 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * 1085 MWIFIEX_SDIO_BLOCK_SIZE, 1086 adapter->ioport); 1087 if (ret) { 1088 mwifiex_dbg(adapter, ERROR, 1089 "FW download, write iomem (%d) failed @ %d\n", 1090 i, offset); 1091 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) 1092 mwifiex_dbg(adapter, ERROR, 1093 "write CFG reg failed\n"); 1094 1095 ret = -1; 1096 goto done; 1097 } 1098 1099 offset += txlen; 1100 } while (true); 1101 1102 mwifiex_dbg(adapter, MSG, 1103 "info: FW download over, size %d bytes\n", offset); 1104 1105 ret = 0; 1106 done: 1107 sdio_release_host(card->func); 1108 kfree(fwbuf); 1109 return ret; 1110 } 1111 1112 /* 1113 * This function decode sdio aggreation pkt. 1114 * 1115 * Based on the the data block size and pkt_len, 1116 * skb data will be decoded to few packets. 1117 */ 1118 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter, 1119 struct sk_buff *skb) 1120 { 1121 u32 total_pkt_len, pkt_len; 1122 struct sk_buff *skb_deaggr; 1123 u16 blk_size; 1124 u8 blk_num; 1125 u8 *data; 1126 1127 data = skb->data; 1128 total_pkt_len = skb->len; 1129 1130 while (total_pkt_len >= (SDIO_HEADER_OFFSET + INTF_HEADER_LEN)) { 1131 if (total_pkt_len < adapter->sdio_rx_block_size) 1132 break; 1133 blk_num = *(data + BLOCK_NUMBER_OFFSET); 1134 blk_size = adapter->sdio_rx_block_size * blk_num; 1135 if (blk_size > total_pkt_len) { 1136 mwifiex_dbg(adapter, ERROR, 1137 "%s: error in blk_size,\t" 1138 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n", 1139 __func__, blk_num, blk_size, total_pkt_len); 1140 break; 1141 } 1142 pkt_len = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET)); 1143 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) { 1144 mwifiex_dbg(adapter, ERROR, 1145 "%s: error in pkt_len,\t" 1146 "pkt_len=%d, blk_size=%d\n", 1147 __func__, pkt_len, blk_size); 1148 break; 1149 } 1150 1151 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, GFP_KERNEL); 1152 if (!skb_deaggr) 1153 break; 1154 skb_put(skb_deaggr, pkt_len); 1155 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len); 1156 skb_pull(skb_deaggr, INTF_HEADER_LEN); 1157 1158 mwifiex_handle_rx_packet(adapter, skb_deaggr); 1159 data += blk_size; 1160 total_pkt_len -= blk_size; 1161 } 1162 } 1163 1164 /* 1165 * This function decodes a received packet. 1166 * 1167 * Based on the type, the packet is treated as either a data, or 1168 * a command response, or an event, and the correct handler 1169 * function is invoked. 1170 */ 1171 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, 1172 struct sk_buff *skb, u32 upld_typ) 1173 { 1174 u8 *cmd_buf; 1175 __le16 *curr_ptr = (__le16 *)skb->data; 1176 u16 pkt_len = le16_to_cpu(*curr_ptr); 1177 struct mwifiex_rxinfo *rx_info; 1178 1179 if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) { 1180 skb_trim(skb, pkt_len); 1181 skb_pull(skb, INTF_HEADER_LEN); 1182 } 1183 1184 switch (upld_typ) { 1185 case MWIFIEX_TYPE_AGGR_DATA: 1186 mwifiex_dbg(adapter, INFO, 1187 "info: --- Rx: Aggr Data packet ---\n"); 1188 rx_info = MWIFIEX_SKB_RXCB(skb); 1189 rx_info->buf_type = MWIFIEX_TYPE_AGGR_DATA; 1190 if (adapter->rx_work_enabled) { 1191 skb_queue_tail(&adapter->rx_data_q, skb); 1192 atomic_inc(&adapter->rx_pending); 1193 adapter->data_received = true; 1194 } else { 1195 mwifiex_deaggr_sdio_pkt(adapter, skb); 1196 dev_kfree_skb_any(skb); 1197 } 1198 break; 1199 1200 case MWIFIEX_TYPE_DATA: 1201 mwifiex_dbg(adapter, DATA, 1202 "info: --- Rx: Data packet ---\n"); 1203 if (adapter->rx_work_enabled) { 1204 skb_queue_tail(&adapter->rx_data_q, skb); 1205 adapter->data_received = true; 1206 atomic_inc(&adapter->rx_pending); 1207 } else { 1208 mwifiex_handle_rx_packet(adapter, skb); 1209 } 1210 break; 1211 1212 case MWIFIEX_TYPE_CMD: 1213 mwifiex_dbg(adapter, CMD, 1214 "info: --- Rx: Cmd Response ---\n"); 1215 /* take care of curr_cmd = NULL case */ 1216 if (!adapter->curr_cmd) { 1217 cmd_buf = adapter->upld_buf; 1218 1219 if (adapter->ps_state == PS_STATE_SLEEP_CFM) 1220 mwifiex_process_sleep_confirm_resp(adapter, 1221 skb->data, 1222 skb->len); 1223 1224 memcpy(cmd_buf, skb->data, 1225 min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, 1226 skb->len)); 1227 1228 dev_kfree_skb_any(skb); 1229 } else { 1230 adapter->cmd_resp_received = true; 1231 adapter->curr_cmd->resp_skb = skb; 1232 } 1233 break; 1234 1235 case MWIFIEX_TYPE_EVENT: 1236 mwifiex_dbg(adapter, EVENT, 1237 "info: --- Rx: Event ---\n"); 1238 adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data); 1239 1240 if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) 1241 memcpy(adapter->event_body, 1242 skb->data + MWIFIEX_EVENT_HEADER_LEN, 1243 skb->len); 1244 1245 /* event cause has been saved to adapter->event_cause */ 1246 adapter->event_received = true; 1247 adapter->event_skb = skb; 1248 1249 break; 1250 1251 default: 1252 mwifiex_dbg(adapter, ERROR, 1253 "unknown upload type %#x\n", upld_typ); 1254 dev_kfree_skb_any(skb); 1255 break; 1256 } 1257 1258 return 0; 1259 } 1260 1261 /* 1262 * This function transfers received packets from card to driver, performing 1263 * aggregation if required. 1264 * 1265 * For data received on control port, or if aggregation is disabled, the 1266 * received buffers are uploaded as separate packets. However, if aggregation 1267 * is enabled and required, the buffers are copied onto an aggregation buffer, 1268 * provided there is space left, processed and finally uploaded. 1269 */ 1270 static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, 1271 u16 rx_len, u8 port) 1272 { 1273 struct sdio_mmc_card *card = adapter->card; 1274 s32 f_do_rx_aggr = 0; 1275 s32 f_do_rx_cur = 0; 1276 s32 f_aggr_cur = 0; 1277 s32 f_post_aggr_cur = 0; 1278 struct sk_buff *skb_deaggr; 1279 struct sk_buff *skb = NULL; 1280 u32 pkt_len, pkt_type, mport, pind; 1281 u8 *curr_ptr; 1282 1283 if ((card->has_control_mask) && (port == CTRL_PORT)) { 1284 /* Read the command Resp without aggr */ 1285 mwifiex_dbg(adapter, CMD, 1286 "info: %s: no aggregation for cmd\t" 1287 "response\n", __func__); 1288 1289 f_do_rx_cur = 1; 1290 goto rx_curr_single; 1291 } 1292 1293 if (!card->mpa_rx.enabled) { 1294 mwifiex_dbg(adapter, WARN, 1295 "info: %s: rx aggregation disabled\n", 1296 __func__); 1297 1298 f_do_rx_cur = 1; 1299 goto rx_curr_single; 1300 } 1301 1302 if ((!card->has_control_mask && (card->mp_rd_bitmap & 1303 card->reg->data_port_mask)) || 1304 (card->has_control_mask && (card->mp_rd_bitmap & 1305 (~((u32) CTRL_PORT_MASK))))) { 1306 /* Some more data RX pending */ 1307 mwifiex_dbg(adapter, INFO, 1308 "info: %s: not last packet\n", __func__); 1309 1310 if (MP_RX_AGGR_IN_PROGRESS(card)) { 1311 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) { 1312 f_aggr_cur = 1; 1313 } else { 1314 /* No room in Aggr buf, do rx aggr now */ 1315 f_do_rx_aggr = 1; 1316 f_post_aggr_cur = 1; 1317 } 1318 } else { 1319 /* Rx aggr not in progress */ 1320 f_aggr_cur = 1; 1321 } 1322 1323 } else { 1324 /* No more data RX pending */ 1325 mwifiex_dbg(adapter, INFO, 1326 "info: %s: last packet\n", __func__); 1327 1328 if (MP_RX_AGGR_IN_PROGRESS(card)) { 1329 f_do_rx_aggr = 1; 1330 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) 1331 f_aggr_cur = 1; 1332 else 1333 /* No room in Aggr buf, do rx aggr now */ 1334 f_do_rx_cur = 1; 1335 } else { 1336 f_do_rx_cur = 1; 1337 } 1338 } 1339 1340 if (f_aggr_cur) { 1341 mwifiex_dbg(adapter, INFO, 1342 "info: current packet aggregation\n"); 1343 /* Curr pkt can be aggregated */ 1344 mp_rx_aggr_setup(card, rx_len, port); 1345 1346 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || 1347 mp_rx_aggr_port_limit_reached(card)) { 1348 mwifiex_dbg(adapter, INFO, 1349 "info: %s: aggregated packet\t" 1350 "limit reached\n", __func__); 1351 /* No more pkts allowed in Aggr buf, rx it */ 1352 f_do_rx_aggr = 1; 1353 } 1354 } 1355 1356 if (f_do_rx_aggr) { 1357 /* do aggr RX now */ 1358 mwifiex_dbg(adapter, DATA, 1359 "info: do_rx_aggr: num of packets: %d\n", 1360 card->mpa_rx.pkt_cnt); 1361 1362 if (card->supports_sdio_new_mode) { 1363 int i; 1364 u32 port_count; 1365 1366 for (i = 0, port_count = 0; i < card->max_ports; i++) 1367 if (card->mpa_rx.ports & BIT(i)) 1368 port_count++; 1369 1370 /* Reading data from "start_port + 0" to "start_port + 1371 * port_count -1", so decrease the count by 1 1372 */ 1373 port_count--; 1374 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | 1375 (port_count << 8)) + card->mpa_rx.start_port; 1376 } else { 1377 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | 1378 (card->mpa_rx.ports << 4)) + 1379 card->mpa_rx.start_port; 1380 } 1381 1382 if (card->mpa_rx.pkt_cnt == 1) 1383 mport = adapter->ioport + port; 1384 1385 if (mwifiex_read_data_sync(adapter, card->mpa_rx.buf, 1386 card->mpa_rx.buf_len, mport, 1)) 1387 goto error; 1388 1389 curr_ptr = card->mpa_rx.buf; 1390 1391 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { 1392 u32 *len_arr = card->mpa_rx.len_arr; 1393 1394 /* get curr PKT len & type */ 1395 pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]); 1396 pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]); 1397 1398 /* copy pkt to deaggr buf */ 1399 skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind], 1400 GFP_KERNEL); 1401 if (!skb_deaggr) { 1402 mwifiex_dbg(adapter, ERROR, "skb allocation failure\t" 1403 "drop pkt len=%d type=%d\n", 1404 pkt_len, pkt_type); 1405 curr_ptr += len_arr[pind]; 1406 continue; 1407 } 1408 1409 skb_put(skb_deaggr, len_arr[pind]); 1410 1411 if ((pkt_type == MWIFIEX_TYPE_DATA || 1412 (pkt_type == MWIFIEX_TYPE_AGGR_DATA && 1413 adapter->sdio_rx_aggr_enable)) && 1414 (pkt_len <= len_arr[pind])) { 1415 1416 memcpy(skb_deaggr->data, curr_ptr, pkt_len); 1417 1418 skb_trim(skb_deaggr, pkt_len); 1419 1420 /* Process de-aggr packet */ 1421 mwifiex_decode_rx_packet(adapter, skb_deaggr, 1422 pkt_type); 1423 } else { 1424 mwifiex_dbg(adapter, ERROR, 1425 "drop wrong aggr pkt:\t" 1426 "sdio_single_port_rx_aggr=%d\t" 1427 "type=%d len=%d max_len=%d\n", 1428 adapter->sdio_rx_aggr_enable, 1429 pkt_type, pkt_len, len_arr[pind]); 1430 dev_kfree_skb_any(skb_deaggr); 1431 } 1432 curr_ptr += len_arr[pind]; 1433 } 1434 MP_RX_AGGR_BUF_RESET(card); 1435 } 1436 1437 rx_curr_single: 1438 if (f_do_rx_cur) { 1439 mwifiex_dbg(adapter, INFO, "info: RX: port: %d, rx_len: %d\n", 1440 port, rx_len); 1441 1442 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL); 1443 if (!skb) { 1444 mwifiex_dbg(adapter, ERROR, 1445 "single skb allocated fail,\t" 1446 "drop pkt port=%d len=%d\n", port, rx_len); 1447 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, 1448 card->mpa_rx.buf, rx_len, 1449 adapter->ioport + port)) 1450 goto error; 1451 return 0; 1452 } 1453 1454 skb_put(skb, rx_len); 1455 1456 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, 1457 skb->data, skb->len, 1458 adapter->ioport + port)) 1459 goto error; 1460 if (!adapter->sdio_rx_aggr_enable && 1461 pkt_type == MWIFIEX_TYPE_AGGR_DATA) { 1462 mwifiex_dbg(adapter, ERROR, "drop wrong pkt type %d\t" 1463 "current SDIO RX Aggr not enabled\n", 1464 pkt_type); 1465 dev_kfree_skb_any(skb); 1466 return 0; 1467 } 1468 1469 mwifiex_decode_rx_packet(adapter, skb, pkt_type); 1470 } 1471 if (f_post_aggr_cur) { 1472 mwifiex_dbg(adapter, INFO, 1473 "info: current packet aggregation\n"); 1474 /* Curr pkt can be aggregated */ 1475 mp_rx_aggr_setup(card, rx_len, port); 1476 } 1477 1478 return 0; 1479 error: 1480 if (MP_RX_AGGR_IN_PROGRESS(card)) 1481 MP_RX_AGGR_BUF_RESET(card); 1482 1483 if (f_do_rx_cur && skb) 1484 /* Single transfer pending. Free curr buff also */ 1485 dev_kfree_skb_any(skb); 1486 1487 return -1; 1488 } 1489 1490 /* 1491 * This function checks the current interrupt status. 1492 * 1493 * The following interrupts are checked and handled by this function - 1494 * - Data sent 1495 * - Command sent 1496 * - Packets received 1497 * 1498 * Since the firmware does not generate download ready interrupt if the 1499 * port updated is command port only, command sent interrupt checking 1500 * should be done manually, and for every SDIO interrupt. 1501 * 1502 * In case of Rx packets received, the packets are uploaded from card to 1503 * host and processed accordingly. 1504 */ 1505 static int mwifiex_process_int_status(struct mwifiex_adapter *adapter) 1506 { 1507 struct sdio_mmc_card *card = adapter->card; 1508 const struct mwifiex_sdio_card_reg *reg = card->reg; 1509 int ret = 0; 1510 u8 sdio_ireg; 1511 struct sk_buff *skb; 1512 u8 port = CTRL_PORT; 1513 u32 len_reg_l, len_reg_u; 1514 u32 rx_blocks; 1515 u16 rx_len; 1516 unsigned long flags; 1517 u32 bitmap; 1518 u8 cr; 1519 1520 spin_lock_irqsave(&adapter->int_lock, flags); 1521 sdio_ireg = adapter->int_status; 1522 adapter->int_status = 0; 1523 spin_unlock_irqrestore(&adapter->int_lock, flags); 1524 1525 if (!sdio_ireg) 1526 return ret; 1527 1528 /* Following interrupt is only for SDIO new mode */ 1529 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent) 1530 adapter->cmd_sent = false; 1531 1532 /* Following interrupt is only for SDIO new mode */ 1533 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) { 1534 u32 pkt_type; 1535 1536 /* read the len of control packet */ 1537 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8; 1538 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0]; 1539 rx_blocks = DIV_ROUND_UP(rx_len, MWIFIEX_SDIO_BLOCK_SIZE); 1540 if (rx_len <= INTF_HEADER_LEN || 1541 (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > 1542 MWIFIEX_RX_DATA_BUF_SIZE) 1543 return -1; 1544 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); 1545 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", rx_len); 1546 1547 skb = mwifiex_alloc_dma_align_buf(rx_len, GFP_KERNEL); 1548 if (!skb) 1549 return -1; 1550 1551 skb_put(skb, rx_len); 1552 1553 if (mwifiex_sdio_card_to_host(adapter, &pkt_type, skb->data, 1554 skb->len, adapter->ioport | 1555 CMD_PORT_SLCT)) { 1556 mwifiex_dbg(adapter, ERROR, 1557 "%s: failed to card_to_host", __func__); 1558 dev_kfree_skb_any(skb); 1559 goto term_cmd; 1560 } 1561 1562 if ((pkt_type != MWIFIEX_TYPE_CMD) && 1563 (pkt_type != MWIFIEX_TYPE_EVENT)) 1564 mwifiex_dbg(adapter, ERROR, 1565 "%s:Received wrong packet on cmd port", 1566 __func__); 1567 1568 mwifiex_decode_rx_packet(adapter, skb, pkt_type); 1569 } 1570 1571 if (sdio_ireg & DN_LD_HOST_INT_STATUS) { 1572 bitmap = (u32) card->mp_regs[reg->wr_bitmap_l]; 1573 bitmap |= ((u32) card->mp_regs[reg->wr_bitmap_u]) << 8; 1574 if (card->supports_sdio_new_mode) { 1575 bitmap |= 1576 ((u32) card->mp_regs[reg->wr_bitmap_1l]) << 16; 1577 bitmap |= 1578 ((u32) card->mp_regs[reg->wr_bitmap_1u]) << 24; 1579 } 1580 card->mp_wr_bitmap = bitmap; 1581 1582 mwifiex_dbg(adapter, INTR, 1583 "int: DNLD: wr_bitmap=0x%x\n", 1584 card->mp_wr_bitmap); 1585 if (adapter->data_sent && 1586 (card->mp_wr_bitmap & card->mp_data_port_mask)) { 1587 mwifiex_dbg(adapter, INTR, 1588 "info: <--- Tx DONE Interrupt --->\n"); 1589 adapter->data_sent = false; 1590 } 1591 } 1592 1593 /* As firmware will not generate download ready interrupt if the port 1594 updated is command port only, cmd_sent should be done for any SDIO 1595 interrupt. */ 1596 if (card->has_control_mask && adapter->cmd_sent) { 1597 /* Check if firmware has attach buffer at command port and 1598 update just that in wr_bit_map. */ 1599 card->mp_wr_bitmap |= 1600 (u32) card->mp_regs[reg->wr_bitmap_l] & CTRL_PORT_MASK; 1601 if (card->mp_wr_bitmap & CTRL_PORT_MASK) 1602 adapter->cmd_sent = false; 1603 } 1604 1605 mwifiex_dbg(adapter, INTR, "info: cmd_sent=%d data_sent=%d\n", 1606 adapter->cmd_sent, adapter->data_sent); 1607 if (sdio_ireg & UP_LD_HOST_INT_STATUS) { 1608 bitmap = (u32) card->mp_regs[reg->rd_bitmap_l]; 1609 bitmap |= ((u32) card->mp_regs[reg->rd_bitmap_u]) << 8; 1610 if (card->supports_sdio_new_mode) { 1611 bitmap |= 1612 ((u32) card->mp_regs[reg->rd_bitmap_1l]) << 16; 1613 bitmap |= 1614 ((u32) card->mp_regs[reg->rd_bitmap_1u]) << 24; 1615 } 1616 card->mp_rd_bitmap = bitmap; 1617 mwifiex_dbg(adapter, INTR, 1618 "int: UPLD: rd_bitmap=0x%x\n", 1619 card->mp_rd_bitmap); 1620 1621 while (true) { 1622 ret = mwifiex_get_rd_port(adapter, &port); 1623 if (ret) { 1624 mwifiex_dbg(adapter, INFO, 1625 "info: no more rd_port available\n"); 1626 break; 1627 } 1628 len_reg_l = reg->rd_len_p0_l + (port << 1); 1629 len_reg_u = reg->rd_len_p0_u + (port << 1); 1630 rx_len = ((u16) card->mp_regs[len_reg_u]) << 8; 1631 rx_len |= (u16) card->mp_regs[len_reg_l]; 1632 mwifiex_dbg(adapter, INFO, 1633 "info: RX: port=%d rx_len=%u\n", 1634 port, rx_len); 1635 rx_blocks = 1636 (rx_len + MWIFIEX_SDIO_BLOCK_SIZE - 1637 1) / MWIFIEX_SDIO_BLOCK_SIZE; 1638 if (rx_len <= INTF_HEADER_LEN || 1639 (card->mpa_rx.enabled && 1640 ((rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE) > 1641 card->mpa_rx.buf_size))) { 1642 mwifiex_dbg(adapter, ERROR, 1643 "invalid rx_len=%d\n", 1644 rx_len); 1645 return -1; 1646 } 1647 1648 rx_len = (u16) (rx_blocks * MWIFIEX_SDIO_BLOCK_SIZE); 1649 mwifiex_dbg(adapter, INFO, "info: rx_len = %d\n", 1650 rx_len); 1651 1652 if (mwifiex_sdio_card_to_host_mp_aggr(adapter, rx_len, 1653 port)) { 1654 mwifiex_dbg(adapter, ERROR, 1655 "card_to_host_mpa failed: int status=%#x\n", 1656 sdio_ireg); 1657 goto term_cmd; 1658 } 1659 } 1660 } 1661 1662 return 0; 1663 1664 term_cmd: 1665 /* terminate cmd */ 1666 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) 1667 mwifiex_dbg(adapter, ERROR, "read CFG reg failed\n"); 1668 else 1669 mwifiex_dbg(adapter, INFO, 1670 "info: CFG reg val = %d\n", cr); 1671 1672 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04))) 1673 mwifiex_dbg(adapter, ERROR, 1674 "write CFG reg failed\n"); 1675 else 1676 mwifiex_dbg(adapter, INFO, "info: write success\n"); 1677 1678 if (mwifiex_read_reg(adapter, CONFIGURATION_REG, &cr)) 1679 mwifiex_dbg(adapter, ERROR, 1680 "read CFG reg failed\n"); 1681 else 1682 mwifiex_dbg(adapter, INFO, 1683 "info: CFG reg val =%x\n", cr); 1684 1685 return -1; 1686 } 1687 1688 /* 1689 * This function aggregates transmission buffers in driver and downloads 1690 * the aggregated packet to card. 1691 * 1692 * The individual packets are aggregated by copying into an aggregation 1693 * buffer and then downloaded to the card. Previous unsent packets in the 1694 * aggregation buffer are pre-copied first before new packets are added. 1695 * Aggregation is done till there is space left in the aggregation buffer, 1696 * or till new packets are available. 1697 * 1698 * The function will only download the packet to the card when aggregation 1699 * stops, otherwise it will just aggregate the packet in aggregation buffer 1700 * and return. 1701 */ 1702 static int mwifiex_host_to_card_mp_aggr(struct mwifiex_adapter *adapter, 1703 u8 *payload, u32 pkt_len, u32 port, 1704 u32 next_pkt_len) 1705 { 1706 struct sdio_mmc_card *card = adapter->card; 1707 int ret = 0; 1708 s32 f_send_aggr_buf = 0; 1709 s32 f_send_cur_buf = 0; 1710 s32 f_precopy_cur_buf = 0; 1711 s32 f_postcopy_cur_buf = 0; 1712 u32 mport; 1713 int index; 1714 1715 if (!card->mpa_tx.enabled || 1716 (card->has_control_mask && (port == CTRL_PORT)) || 1717 (card->supports_sdio_new_mode && (port == CMD_PORT_SLCT))) { 1718 mwifiex_dbg(adapter, WARN, 1719 "info: %s: tx aggregation disabled\n", 1720 __func__); 1721 1722 f_send_cur_buf = 1; 1723 goto tx_curr_single; 1724 } 1725 1726 if (next_pkt_len) { 1727 /* More pkt in TX queue */ 1728 mwifiex_dbg(adapter, INFO, 1729 "info: %s: more packets in queue.\n", 1730 __func__); 1731 1732 if (MP_TX_AGGR_IN_PROGRESS(card)) { 1733 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { 1734 f_precopy_cur_buf = 1; 1735 1736 if (!(card->mp_wr_bitmap & 1737 (1 << card->curr_wr_port)) || 1738 !MP_TX_AGGR_BUF_HAS_ROOM( 1739 card, pkt_len + next_pkt_len)) 1740 f_send_aggr_buf = 1; 1741 } else { 1742 /* No room in Aggr buf, send it */ 1743 f_send_aggr_buf = 1; 1744 1745 if (!(card->mp_wr_bitmap & 1746 (1 << card->curr_wr_port))) 1747 f_send_cur_buf = 1; 1748 else 1749 f_postcopy_cur_buf = 1; 1750 } 1751 } else { 1752 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) && 1753 (card->mp_wr_bitmap & (1 << card->curr_wr_port))) 1754 f_precopy_cur_buf = 1; 1755 else 1756 f_send_cur_buf = 1; 1757 } 1758 } else { 1759 /* Last pkt in TX queue */ 1760 mwifiex_dbg(adapter, INFO, 1761 "info: %s: Last packet in Tx Queue.\n", 1762 __func__); 1763 1764 if (MP_TX_AGGR_IN_PROGRESS(card)) { 1765 /* some packs in Aggr buf already */ 1766 f_send_aggr_buf = 1; 1767 1768 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) 1769 f_precopy_cur_buf = 1; 1770 else 1771 /* No room in Aggr buf, send it */ 1772 f_send_cur_buf = 1; 1773 } else { 1774 f_send_cur_buf = 1; 1775 } 1776 } 1777 1778 if (f_precopy_cur_buf) { 1779 mwifiex_dbg(adapter, DATA, 1780 "data: %s: precopy current buffer\n", 1781 __func__); 1782 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); 1783 1784 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || 1785 mp_tx_aggr_port_limit_reached(card)) 1786 /* No more pkts allowed in Aggr buf, send it */ 1787 f_send_aggr_buf = 1; 1788 } 1789 1790 if (f_send_aggr_buf) { 1791 mwifiex_dbg(adapter, DATA, 1792 "data: %s: send aggr buffer: %d %d\n", 1793 __func__, card->mpa_tx.start_port, 1794 card->mpa_tx.ports); 1795 if (card->supports_sdio_new_mode) { 1796 u32 port_count; 1797 int i; 1798 1799 for (i = 0, port_count = 0; i < card->max_ports; i++) 1800 if (card->mpa_tx.ports & BIT(i)) 1801 port_count++; 1802 1803 /* Writing data from "start_port + 0" to "start_port + 1804 * port_count -1", so decrease the count by 1 1805 */ 1806 port_count--; 1807 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | 1808 (port_count << 8)) + card->mpa_tx.start_port; 1809 } else { 1810 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | 1811 (card->mpa_tx.ports << 4)) + 1812 card->mpa_tx.start_port; 1813 } 1814 1815 if (card->mpa_tx.pkt_cnt == 1) 1816 mport = adapter->ioport + port; 1817 1818 ret = mwifiex_write_data_to_card(adapter, card->mpa_tx.buf, 1819 card->mpa_tx.buf_len, mport); 1820 1821 /* Save the last multi port tx aggreagation info to debug log */ 1822 index = adapter->dbg.last_sdio_mp_index; 1823 index = (index + 1) % MWIFIEX_DBG_SDIO_MP_NUM; 1824 adapter->dbg.last_sdio_mp_index = index; 1825 adapter->dbg.last_mp_wr_ports[index] = mport; 1826 adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap; 1827 adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len; 1828 adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port; 1829 1830 MP_TX_AGGR_BUF_RESET(card); 1831 } 1832 1833 tx_curr_single: 1834 if (f_send_cur_buf) { 1835 mwifiex_dbg(adapter, DATA, 1836 "data: %s: send current buffer %d\n", 1837 __func__, port); 1838 ret = mwifiex_write_data_to_card(adapter, payload, pkt_len, 1839 adapter->ioport + port); 1840 } 1841 1842 if (f_postcopy_cur_buf) { 1843 mwifiex_dbg(adapter, DATA, 1844 "data: %s: postcopy current buffer\n", 1845 __func__); 1846 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); 1847 } 1848 1849 return ret; 1850 } 1851 1852 /* 1853 * This function downloads data from driver to card. 1854 * 1855 * Both commands and data packets are transferred to the card by this 1856 * function. 1857 * 1858 * This function adds the SDIO specific header to the front of the buffer 1859 * before transferring. The header contains the length of the packet and 1860 * the type. The firmware handles the packets based upon this set type. 1861 */ 1862 static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, 1863 u8 type, struct sk_buff *skb, 1864 struct mwifiex_tx_param *tx_param) 1865 { 1866 struct sdio_mmc_card *card = adapter->card; 1867 int ret; 1868 u32 buf_block_len; 1869 u32 blk_size; 1870 u32 port = CTRL_PORT; 1871 u8 *payload = (u8 *)skb->data; 1872 u32 pkt_len = skb->len; 1873 1874 /* Allocate buffer and copy payload */ 1875 blk_size = MWIFIEX_SDIO_BLOCK_SIZE; 1876 buf_block_len = (pkt_len + blk_size - 1) / blk_size; 1877 *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len); 1878 *(__le16 *)&payload[2] = cpu_to_le16(type); 1879 1880 /* 1881 * This is SDIO specific header 1882 * u16 length, 1883 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, 1884 * MWIFIEX_TYPE_EVENT = 3) 1885 */ 1886 if (type == MWIFIEX_TYPE_DATA) { 1887 ret = mwifiex_get_wr_port_data(adapter, &port); 1888 if (ret) { 1889 mwifiex_dbg(adapter, ERROR, 1890 "%s: no wr_port available\n", 1891 __func__); 1892 return ret; 1893 } 1894 } else { 1895 adapter->cmd_sent = true; 1896 /* Type must be MWIFIEX_TYPE_CMD */ 1897 1898 if (pkt_len <= INTF_HEADER_LEN || 1899 pkt_len > MWIFIEX_UPLD_SIZE) 1900 mwifiex_dbg(adapter, ERROR, 1901 "%s: payload=%p, nb=%d\n", 1902 __func__, payload, pkt_len); 1903 1904 if (card->supports_sdio_new_mode) 1905 port = CMD_PORT_SLCT; 1906 } 1907 1908 /* Transfer data to card */ 1909 pkt_len = buf_block_len * blk_size; 1910 1911 if (tx_param) 1912 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, 1913 port, tx_param->next_pkt_len 1914 ); 1915 else 1916 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, 1917 port, 0); 1918 1919 if (ret) { 1920 if (type == MWIFIEX_TYPE_CMD) 1921 adapter->cmd_sent = false; 1922 if (type == MWIFIEX_TYPE_DATA) { 1923 adapter->data_sent = false; 1924 /* restore curr_wr_port in error cases */ 1925 card->curr_wr_port = port; 1926 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port); 1927 } 1928 } else { 1929 if (type == MWIFIEX_TYPE_DATA) { 1930 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) 1931 adapter->data_sent = true; 1932 else 1933 adapter->data_sent = false; 1934 } 1935 } 1936 1937 return ret; 1938 } 1939 1940 /* 1941 * This function allocates the MPA Tx and Rx buffers. 1942 */ 1943 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, 1944 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) 1945 { 1946 struct sdio_mmc_card *card = adapter->card; 1947 u32 rx_buf_size; 1948 int ret = 0; 1949 1950 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); 1951 if (!card->mpa_tx.buf) { 1952 ret = -1; 1953 goto error; 1954 } 1955 1956 card->mpa_tx.buf_size = mpa_tx_buf_size; 1957 1958 rx_buf_size = max_t(u32, mpa_rx_buf_size, 1959 (u32)SDIO_MAX_AGGR_BUF_SIZE); 1960 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL); 1961 if (!card->mpa_rx.buf) { 1962 ret = -1; 1963 goto error; 1964 } 1965 1966 card->mpa_rx.buf_size = rx_buf_size; 1967 1968 error: 1969 if (ret) { 1970 kfree(card->mpa_tx.buf); 1971 kfree(card->mpa_rx.buf); 1972 card->mpa_tx.buf_size = 0; 1973 card->mpa_rx.buf_size = 0; 1974 } 1975 1976 return ret; 1977 } 1978 1979 /* 1980 * This function unregisters the SDIO device. 1981 * 1982 * The SDIO IRQ is released, the function is disabled and driver 1983 * data is set to null. 1984 */ 1985 static void 1986 mwifiex_unregister_dev(struct mwifiex_adapter *adapter) 1987 { 1988 struct sdio_mmc_card *card = adapter->card; 1989 1990 if (adapter->card) { 1991 card->adapter = NULL; 1992 sdio_claim_host(card->func); 1993 sdio_disable_func(card->func); 1994 sdio_release_host(card->func); 1995 } 1996 } 1997 1998 /* 1999 * This function registers the SDIO device. 2000 * 2001 * SDIO IRQ is claimed, block size is set and driver data is initialized. 2002 */ 2003 static int mwifiex_register_dev(struct mwifiex_adapter *adapter) 2004 { 2005 int ret; 2006 struct sdio_mmc_card *card = adapter->card; 2007 struct sdio_func *func = card->func; 2008 2009 /* save adapter pointer in card */ 2010 card->adapter = adapter; 2011 adapter->tx_buf_size = card->tx_buf_size; 2012 2013 sdio_claim_host(func); 2014 2015 /* Set block size */ 2016 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); 2017 sdio_release_host(func); 2018 if (ret) { 2019 mwifiex_dbg(adapter, ERROR, 2020 "cannot set SDIO block size\n"); 2021 return ret; 2022 } 2023 2024 strcpy(adapter->fw_name, card->firmware); 2025 if (card->fw_dump_enh) { 2026 adapter->mem_type_mapping_tbl = generic_mem_type_map; 2027 adapter->num_mem_types = 1; 2028 } else { 2029 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl; 2030 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl); 2031 } 2032 2033 return 0; 2034 } 2035 2036 /* 2037 * This function initializes the SDIO driver. 2038 * 2039 * The following initializations steps are followed - 2040 * - Read the Host interrupt status register to acknowledge 2041 * the first interrupt got from bootloader 2042 * - Disable host interrupt mask register 2043 * - Get SDIO port 2044 * - Initialize SDIO variables in card 2045 * - Allocate MP registers 2046 * - Allocate MPA Tx and Rx buffers 2047 */ 2048 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) 2049 { 2050 struct sdio_mmc_card *card = adapter->card; 2051 const struct mwifiex_sdio_card_reg *reg = card->reg; 2052 int ret; 2053 u8 sdio_ireg; 2054 2055 sdio_set_drvdata(card->func, card); 2056 2057 /* 2058 * Read the host_int_status_reg for ACK the first interrupt got 2059 * from the bootloader. If we don't do this we get a interrupt 2060 * as soon as we register the irq. 2061 */ 2062 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); 2063 2064 /* Get SDIO ioport */ 2065 mwifiex_init_sdio_ioport(adapter); 2066 2067 /* Initialize SDIO variables in card */ 2068 card->mp_rd_bitmap = 0; 2069 card->mp_wr_bitmap = 0; 2070 card->curr_rd_port = reg->start_rd_port; 2071 card->curr_wr_port = reg->start_wr_port; 2072 2073 card->mp_data_port_mask = reg->data_port_mask; 2074 2075 card->mpa_tx.buf_len = 0; 2076 card->mpa_tx.pkt_cnt = 0; 2077 card->mpa_tx.start_port = 0; 2078 2079 card->mpa_tx.enabled = 1; 2080 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit; 2081 2082 card->mpa_rx.buf_len = 0; 2083 card->mpa_rx.pkt_cnt = 0; 2084 card->mpa_rx.start_port = 0; 2085 2086 card->mpa_rx.enabled = 1; 2087 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit; 2088 2089 /* Allocate buffers for SDIO MP-A */ 2090 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL); 2091 if (!card->mp_regs) 2092 return -ENOMEM; 2093 2094 /* Allocate skb pointer buffers */ 2095 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) * 2096 card->mp_agg_pkt_limit, GFP_KERNEL); 2097 if (!card->mpa_rx.skb_arr) { 2098 kfree(card->mp_regs); 2099 return -ENOMEM; 2100 } 2101 2102 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) * 2103 card->mp_agg_pkt_limit, GFP_KERNEL); 2104 if (!card->mpa_rx.len_arr) { 2105 kfree(card->mp_regs); 2106 kfree(card->mpa_rx.skb_arr); 2107 return -ENOMEM; 2108 } 2109 2110 ret = mwifiex_alloc_sdio_mpa_buffers(adapter, 2111 card->mp_tx_agg_buf_size, 2112 card->mp_rx_agg_buf_size); 2113 2114 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */ 2115 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX || 2116 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) { 2117 /* Disable rx single port aggregation */ 2118 adapter->host_disable_sdio_rx_aggr = true; 2119 2120 ret = mwifiex_alloc_sdio_mpa_buffers 2121 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K, 2122 MWIFIEX_MP_AGGR_BUF_SIZE_32K); 2123 if (ret) { 2124 /* Disable multi port aggregation */ 2125 card->mpa_tx.enabled = 0; 2126 card->mpa_rx.enabled = 0; 2127 } 2128 } 2129 2130 adapter->auto_tdls = card->can_auto_tdls; 2131 adapter->ext_scan = card->can_ext_scan; 2132 return 0; 2133 } 2134 2135 /* 2136 * This function resets the MPA Tx and Rx buffers. 2137 */ 2138 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) 2139 { 2140 struct sdio_mmc_card *card = adapter->card; 2141 2142 MP_TX_AGGR_BUF_RESET(card); 2143 MP_RX_AGGR_BUF_RESET(card); 2144 } 2145 2146 /* 2147 * This function cleans up the allocated card buffers. 2148 * 2149 * The following are freed by this function - 2150 * - MP registers 2151 * - MPA Tx buffer 2152 * - MPA Rx buffer 2153 */ 2154 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) 2155 { 2156 struct sdio_mmc_card *card = adapter->card; 2157 2158 kfree(card->mp_regs); 2159 kfree(card->mpa_rx.skb_arr); 2160 kfree(card->mpa_rx.len_arr); 2161 kfree(card->mpa_tx.buf); 2162 kfree(card->mpa_rx.buf); 2163 } 2164 2165 /* 2166 * This function updates the MP end port in card. 2167 */ 2168 static void 2169 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) 2170 { 2171 struct sdio_mmc_card *card = adapter->card; 2172 const struct mwifiex_sdio_card_reg *reg = card->reg; 2173 int i; 2174 2175 card->mp_end_port = port; 2176 2177 card->mp_data_port_mask = reg->data_port_mask; 2178 2179 if (reg->start_wr_port) { 2180 for (i = 1; i <= card->max_ports - card->mp_end_port; i++) 2181 card->mp_data_port_mask &= 2182 ~(1 << (card->max_ports - i)); 2183 } 2184 2185 card->curr_wr_port = reg->start_wr_port; 2186 2187 mwifiex_dbg(adapter, CMD, 2188 "cmd: mp_end_port %d, data port mask 0x%x\n", 2189 port, card->mp_data_port_mask); 2190 } 2191 2192 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) 2193 { 2194 struct sdio_mmc_card *card = adapter->card; 2195 struct sdio_func *func = card->func; 2196 2197 mwifiex_shutdown_sw(adapter); 2198 2199 /* power cycle the adapter */ 2200 sdio_claim_host(func); 2201 mmc_hw_reset(func->card->host); 2202 sdio_release_host(func); 2203 2204 /* Previous save_adapter won't be valid after this. We will cancel 2205 * pending work requests. 2206 */ 2207 clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags); 2208 clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags); 2209 2210 mwifiex_reinit_sw(adapter); 2211 } 2212 2213 /* This function read/write firmware */ 2214 static enum 2215 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter, 2216 u8 doneflag) 2217 { 2218 struct sdio_mmc_card *card = adapter->card; 2219 int ret, tries; 2220 u8 ctrl_data = 0; 2221 2222 sdio_writeb(card->func, card->reg->fw_dump_host_ready, 2223 card->reg->fw_dump_ctrl, &ret); 2224 if (ret) { 2225 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n"); 2226 return RDWR_STATUS_FAILURE; 2227 } 2228 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 2229 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl, 2230 &ret); 2231 if (ret) { 2232 mwifiex_dbg(adapter, ERROR, "SDIO read err\n"); 2233 return RDWR_STATUS_FAILURE; 2234 } 2235 if (ctrl_data == FW_DUMP_DONE) 2236 break; 2237 if (doneflag && ctrl_data == doneflag) 2238 return RDWR_STATUS_DONE; 2239 if (ctrl_data != card->reg->fw_dump_host_ready) { 2240 mwifiex_dbg(adapter, WARN, 2241 "The ctrl reg was changed, re-try again\n"); 2242 sdio_writeb(card->func, card->reg->fw_dump_host_ready, 2243 card->reg->fw_dump_ctrl, &ret); 2244 if (ret) { 2245 mwifiex_dbg(adapter, ERROR, "SDIO write err\n"); 2246 return RDWR_STATUS_FAILURE; 2247 } 2248 } 2249 usleep_range(100, 200); 2250 } 2251 if (ctrl_data == card->reg->fw_dump_host_ready) { 2252 mwifiex_dbg(adapter, ERROR, 2253 "Fail to pull ctrl_data\n"); 2254 return RDWR_STATUS_FAILURE; 2255 } 2256 2257 return RDWR_STATUS_SUCCESS; 2258 } 2259 2260 /* This function dump firmware memory to file */ 2261 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter) 2262 { 2263 struct sdio_mmc_card *card = adapter->card; 2264 int ret = 0; 2265 unsigned int reg, reg_start, reg_end; 2266 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0; 2267 enum rdwr_status stat; 2268 u32 memory_size; 2269 2270 if (!card->can_dump_fw) 2271 return; 2272 2273 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) { 2274 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 2275 2276 if (entry->mem_ptr) { 2277 vfree(entry->mem_ptr); 2278 entry->mem_ptr = NULL; 2279 } 2280 entry->mem_size = 0; 2281 } 2282 2283 mwifiex_pm_wakeup_card(adapter); 2284 sdio_claim_host(card->func); 2285 2286 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n"); 2287 2288 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); 2289 if (stat == RDWR_STATUS_FAILURE) 2290 goto done; 2291 2292 reg = card->reg->fw_dump_start; 2293 /* Read the number of the memories which will dump */ 2294 dump_num = sdio_readb(card->func, reg, &ret); 2295 if (ret) { 2296 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n"); 2297 goto done; 2298 } 2299 2300 /* Read the length of every memory which will dump */ 2301 for (idx = 0; idx < dump_num; idx++) { 2302 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 2303 2304 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); 2305 if (stat == RDWR_STATUS_FAILURE) 2306 goto done; 2307 2308 memory_size = 0; 2309 reg = card->reg->fw_dump_start; 2310 for (i = 0; i < 4; i++) { 2311 read_reg = sdio_readb(card->func, reg, &ret); 2312 if (ret) { 2313 mwifiex_dbg(adapter, ERROR, "SDIO read err\n"); 2314 goto done; 2315 } 2316 memory_size |= (read_reg << i*8); 2317 reg++; 2318 } 2319 2320 if (memory_size == 0) { 2321 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n"); 2322 ret = mwifiex_write_reg(adapter, 2323 card->reg->fw_dump_ctrl, 2324 FW_DUMP_READ_DONE); 2325 if (ret) { 2326 mwifiex_dbg(adapter, ERROR, "SDIO write err\n"); 2327 return; 2328 } 2329 break; 2330 } 2331 2332 mwifiex_dbg(adapter, DUMP, 2333 "%s_SIZE=0x%x\n", entry->mem_name, memory_size); 2334 entry->mem_ptr = vmalloc(memory_size + 1); 2335 entry->mem_size = memory_size; 2336 if (!entry->mem_ptr) { 2337 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n", 2338 entry->mem_name); 2339 goto done; 2340 } 2341 dbg_ptr = entry->mem_ptr; 2342 end_ptr = dbg_ptr + memory_size; 2343 2344 doneflag = entry->done_flag; 2345 mwifiex_dbg(adapter, DUMP, 2346 "Start %s output, please wait...\n", 2347 entry->mem_name); 2348 2349 do { 2350 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); 2351 if (stat == RDWR_STATUS_FAILURE) 2352 goto done; 2353 2354 reg_start = card->reg->fw_dump_start; 2355 reg_end = card->reg->fw_dump_end; 2356 for (reg = reg_start; reg <= reg_end; reg++) { 2357 *dbg_ptr = sdio_readb(card->func, reg, &ret); 2358 if (ret) { 2359 mwifiex_dbg(adapter, ERROR, 2360 "SDIO read err\n"); 2361 goto done; 2362 } 2363 if (dbg_ptr < end_ptr) 2364 dbg_ptr++; 2365 else 2366 mwifiex_dbg(adapter, ERROR, 2367 "Allocated buf not enough\n"); 2368 } 2369 2370 if (stat != RDWR_STATUS_DONE) 2371 continue; 2372 2373 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n", 2374 entry->mem_name, dbg_ptr - entry->mem_ptr); 2375 break; 2376 } while (1); 2377 } 2378 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n"); 2379 2380 done: 2381 sdio_release_host(card->func); 2382 } 2383 2384 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter) 2385 { 2386 struct sdio_mmc_card *card = adapter->card; 2387 struct memory_type_mapping *entry = &generic_mem_type_map[0]; 2388 unsigned int reg, reg_start, reg_end; 2389 u8 start_flag = 0, done_flag = 0; 2390 u8 *dbg_ptr, *end_ptr; 2391 enum rdwr_status stat; 2392 int ret = -1, tries; 2393 2394 if (!card->fw_dump_enh) 2395 return; 2396 2397 if (entry->mem_ptr) { 2398 vfree(entry->mem_ptr); 2399 entry->mem_ptr = NULL; 2400 } 2401 entry->mem_size = 0; 2402 2403 mwifiex_pm_wakeup_card(adapter); 2404 sdio_claim_host(card->func); 2405 2406 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n"); 2407 2408 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag); 2409 if (stat == RDWR_STATUS_FAILURE) 2410 goto done; 2411 2412 reg_start = card->reg->fw_dump_start; 2413 reg_end = card->reg->fw_dump_end; 2414 for (reg = reg_start; reg <= reg_end; reg++) { 2415 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 2416 start_flag = sdio_readb(card->func, reg, &ret); 2417 if (ret) { 2418 mwifiex_dbg(adapter, ERROR, 2419 "SDIO read err\n"); 2420 goto done; 2421 } 2422 if (start_flag == 0) 2423 break; 2424 if (tries == MAX_POLL_TRIES) { 2425 mwifiex_dbg(adapter, ERROR, 2426 "FW not ready to dump\n"); 2427 ret = -1; 2428 goto done; 2429 } 2430 } 2431 usleep_range(100, 200); 2432 } 2433 2434 entry->mem_ptr = vmalloc(0xf0000 + 1); 2435 if (!entry->mem_ptr) { 2436 ret = -1; 2437 goto done; 2438 } 2439 dbg_ptr = entry->mem_ptr; 2440 entry->mem_size = 0xf0000; 2441 end_ptr = dbg_ptr + entry->mem_size; 2442 2443 done_flag = entry->done_flag; 2444 mwifiex_dbg(adapter, DUMP, 2445 "Start %s output, please wait...\n", entry->mem_name); 2446 2447 while (true) { 2448 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag); 2449 if (stat == RDWR_STATUS_FAILURE) 2450 goto done; 2451 for (reg = reg_start; reg <= reg_end; reg++) { 2452 *dbg_ptr = sdio_readb(card->func, reg, &ret); 2453 if (ret) { 2454 mwifiex_dbg(adapter, ERROR, 2455 "SDIO read err\n"); 2456 goto done; 2457 } 2458 dbg_ptr++; 2459 if (dbg_ptr >= end_ptr) { 2460 u8 *tmp_ptr; 2461 2462 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1); 2463 if (!tmp_ptr) 2464 goto done; 2465 2466 memcpy(tmp_ptr, entry->mem_ptr, 2467 entry->mem_size); 2468 vfree(entry->mem_ptr); 2469 entry->mem_ptr = tmp_ptr; 2470 tmp_ptr = NULL; 2471 dbg_ptr = entry->mem_ptr + entry->mem_size; 2472 entry->mem_size += 0x4000; 2473 end_ptr = entry->mem_ptr + entry->mem_size; 2474 } 2475 } 2476 if (stat == RDWR_STATUS_DONE) { 2477 entry->mem_size = dbg_ptr - entry->mem_ptr; 2478 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n", 2479 entry->mem_name, entry->mem_size); 2480 ret = 0; 2481 break; 2482 } 2483 } 2484 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n"); 2485 2486 done: 2487 if (ret) { 2488 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n"); 2489 if (entry->mem_ptr) { 2490 vfree(entry->mem_ptr); 2491 entry->mem_ptr = NULL; 2492 } 2493 entry->mem_size = 0; 2494 } 2495 sdio_release_host(card->func); 2496 } 2497 2498 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter) 2499 { 2500 struct sdio_mmc_card *card = adapter->card; 2501 int drv_info_size; 2502 void *drv_info; 2503 2504 drv_info_size = mwifiex_drv_info_dump(adapter, &drv_info); 2505 if (card->fw_dump_enh) 2506 mwifiex_sdio_generic_fw_dump(adapter); 2507 else 2508 mwifiex_sdio_fw_dump(adapter); 2509 mwifiex_upload_device_dump(adapter, drv_info, drv_info_size); 2510 } 2511 2512 static void mwifiex_sdio_work(struct work_struct *work) 2513 { 2514 struct sdio_mmc_card *card = 2515 container_of(work, struct sdio_mmc_card, work); 2516 2517 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, 2518 &card->work_flags)) 2519 mwifiex_sdio_device_dump_work(card->adapter); 2520 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, 2521 &card->work_flags)) 2522 mwifiex_sdio_card_reset_work(card->adapter); 2523 } 2524 2525 /* This function resets the card */ 2526 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter) 2527 { 2528 struct sdio_mmc_card *card = adapter->card; 2529 2530 if (test_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags)) 2531 return; 2532 2533 set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags); 2534 2535 schedule_work(&card->work); 2536 } 2537 2538 /* This function dumps FW information */ 2539 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter) 2540 { 2541 struct sdio_mmc_card *card = adapter->card; 2542 2543 if (test_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags)) 2544 return; 2545 2546 set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags); 2547 schedule_work(&card->work); 2548 } 2549 2550 /* Function to dump SDIO function registers and SDIO scratch registers in case 2551 * of FW crash 2552 */ 2553 static int 2554 mwifiex_sdio_reg_dump(struct mwifiex_adapter *adapter, char *drv_buf) 2555 { 2556 char *p = drv_buf; 2557 struct sdio_mmc_card *cardp = adapter->card; 2558 int ret = 0; 2559 u8 count, func, data, index = 0, size = 0; 2560 u8 reg, reg_start, reg_end; 2561 char buf[256], *ptr; 2562 2563 if (!p) 2564 return 0; 2565 2566 mwifiex_dbg(adapter, MSG, "SDIO register dump start\n"); 2567 2568 mwifiex_pm_wakeup_card(adapter); 2569 2570 sdio_claim_host(cardp->func); 2571 2572 for (count = 0; count < 5; count++) { 2573 memset(buf, 0, sizeof(buf)); 2574 ptr = buf; 2575 2576 switch (count) { 2577 case 0: 2578 /* Read the registers of SDIO function0 */ 2579 func = count; 2580 reg_start = 0; 2581 reg_end = 9; 2582 break; 2583 case 1: 2584 /* Read the registers of SDIO function1 */ 2585 func = count; 2586 reg_start = cardp->reg->func1_dump_reg_start; 2587 reg_end = cardp->reg->func1_dump_reg_end; 2588 break; 2589 case 2: 2590 index = 0; 2591 func = 1; 2592 reg_start = cardp->reg->func1_spec_reg_table[index++]; 2593 size = cardp->reg->func1_spec_reg_num; 2594 reg_end = cardp->reg->func1_spec_reg_table[size-1]; 2595 break; 2596 default: 2597 /* Read the scratch registers of SDIO function1 */ 2598 if (count == 4) 2599 mdelay(100); 2600 func = 1; 2601 reg_start = cardp->reg->func1_scratch_reg; 2602 reg_end = reg_start + MWIFIEX_SDIO_SCRATCH_SIZE; 2603 } 2604 2605 if (count != 2) 2606 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ", 2607 func, reg_start, reg_end); 2608 else 2609 ptr += sprintf(ptr, "SDIO Func%d: ", func); 2610 2611 for (reg = reg_start; reg <= reg_end;) { 2612 if (func == 0) 2613 data = sdio_f0_readb(cardp->func, reg, &ret); 2614 else 2615 data = sdio_readb(cardp->func, reg, &ret); 2616 2617 if (count == 2) 2618 ptr += sprintf(ptr, "(%#x) ", reg); 2619 if (!ret) { 2620 ptr += sprintf(ptr, "%02x ", data); 2621 } else { 2622 ptr += sprintf(ptr, "ERR"); 2623 break; 2624 } 2625 2626 if (count == 2 && reg < reg_end) 2627 reg = cardp->reg->func1_spec_reg_table[index++]; 2628 else 2629 reg++; 2630 } 2631 2632 mwifiex_dbg(adapter, MSG, "%s\n", buf); 2633 p += sprintf(p, "%s\n", buf); 2634 } 2635 2636 sdio_release_host(cardp->func); 2637 2638 mwifiex_dbg(adapter, MSG, "SDIO register dump end\n"); 2639 2640 return p - drv_buf; 2641 } 2642 2643 /* sdio device/function initialization, code is extracted 2644 * from init_if handler and register_dev handler. 2645 */ 2646 static void mwifiex_sdio_up_dev(struct mwifiex_adapter *adapter) 2647 { 2648 struct sdio_mmc_card *card = adapter->card; 2649 u8 sdio_ireg; 2650 2651 sdio_claim_host(card->func); 2652 sdio_enable_func(card->func); 2653 sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); 2654 sdio_release_host(card->func); 2655 2656 /* tx_buf_size might be changed to 3584 by firmware during 2657 * data transfer, we will reset to default size. 2658 */ 2659 adapter->tx_buf_size = card->tx_buf_size; 2660 2661 /* Read the host_int_status_reg for ACK the first interrupt got 2662 * from the bootloader. If we don't do this we get a interrupt 2663 * as soon as we register the irq. 2664 */ 2665 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); 2666 2667 mwifiex_init_sdio_ioport(adapter); 2668 } 2669 2670 static struct mwifiex_if_ops sdio_ops = { 2671 .init_if = mwifiex_init_sdio, 2672 .cleanup_if = mwifiex_cleanup_sdio, 2673 .check_fw_status = mwifiex_check_fw_status, 2674 .check_winner_status = mwifiex_check_winner_status, 2675 .prog_fw = mwifiex_prog_fw_w_helper, 2676 .register_dev = mwifiex_register_dev, 2677 .unregister_dev = mwifiex_unregister_dev, 2678 .enable_int = mwifiex_sdio_enable_host_int, 2679 .disable_int = mwifiex_sdio_disable_host_int, 2680 .process_int_status = mwifiex_process_int_status, 2681 .host_to_card = mwifiex_sdio_host_to_card, 2682 .wakeup = mwifiex_pm_wakeup_card, 2683 .wakeup_complete = mwifiex_pm_wakeup_card_complete, 2684 2685 /* SDIO specific */ 2686 .update_mp_end_port = mwifiex_update_mp_end_port, 2687 .cleanup_mpa_buf = mwifiex_cleanup_mpa_buf, 2688 .cmdrsp_complete = mwifiex_sdio_cmdrsp_complete, 2689 .event_complete = mwifiex_sdio_event_complete, 2690 .dnld_fw = mwifiex_sdio_dnld_fw, 2691 .card_reset = mwifiex_sdio_card_reset, 2692 .reg_dump = mwifiex_sdio_reg_dump, 2693 .device_dump = mwifiex_sdio_device_dump, 2694 .deaggr_pkt = mwifiex_deaggr_sdio_pkt, 2695 .up_dev = mwifiex_sdio_up_dev, 2696 }; 2697 2698 module_driver(mwifiex_sdio, sdio_register_driver, sdio_unregister_driver); 2699 2700 MODULE_AUTHOR("Marvell International Ltd."); 2701 MODULE_DESCRIPTION("Marvell WiFi-Ex SDIO Driver version " SDIO_VERSION); 2702 MODULE_VERSION(SDIO_VERSION); 2703 MODULE_LICENSE("GPL v2"); 2704 MODULE_FIRMWARE(SD8786_DEFAULT_FW_NAME); 2705 MODULE_FIRMWARE(SD8787_DEFAULT_FW_NAME); 2706 MODULE_FIRMWARE(SD8797_DEFAULT_FW_NAME); 2707 MODULE_FIRMWARE(SD8897_DEFAULT_FW_NAME); 2708 MODULE_FIRMWARE(SD8887_DEFAULT_FW_NAME); 2709 MODULE_FIRMWARE(SD8997_DEFAULT_FW_NAME); 2710