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 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 (firmware_stat == FIRMWARE_READY_SDIO && !adapter->mfg_mode) { 394 mwifiex_deauthenticate_all(adapter); 395 396 priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY); 397 mwifiex_disable_auto_ds(priv); 398 mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN); 399 } 400 401 mwifiex_remove_card(adapter); 402 } 403 404 /* 405 * SDIO suspend. 406 * 407 * Kernel needs to suspend all functions separately. Therefore all 408 * registered functions must have drivers with suspend and resume 409 * methods. Failing that the kernel simply removes the whole card. 410 * 411 * If already not suspended, this function allocates and sends a host 412 * sleep activate request to the firmware and turns off the traffic. 413 */ 414 static int mwifiex_sdio_suspend(struct device *dev) 415 { 416 struct sdio_func *func = dev_to_sdio_func(dev); 417 struct sdio_mmc_card *card; 418 struct mwifiex_adapter *adapter; 419 mmc_pm_flag_t pm_flag = 0; 420 int ret = 0; 421 422 pm_flag = sdio_get_host_pm_caps(func); 423 pr_debug("cmd: %s: suspend: PM flag = 0x%x\n", 424 sdio_func_id(func), pm_flag); 425 if (!(pm_flag & MMC_PM_KEEP_POWER)) { 426 dev_err(dev, "%s: cannot remain alive while host is" 427 " suspended\n", sdio_func_id(func)); 428 return -ENOSYS; 429 } 430 431 card = sdio_get_drvdata(func); 432 if (!card) { 433 dev_err(dev, "suspend: invalid card\n"); 434 return 0; 435 } 436 437 /* Might still be loading firmware */ 438 wait_for_completion(&card->fw_done); 439 440 adapter = card->adapter; 441 if (!adapter) { 442 dev_err(dev, "adapter is not valid\n"); 443 return 0; 444 } 445 446 mwifiex_enable_wake(adapter); 447 448 /* Enable the Host Sleep */ 449 if (!mwifiex_enable_hs(adapter)) { 450 mwifiex_dbg(adapter, ERROR, 451 "cmd: failed to suspend\n"); 452 adapter->hs_enabling = false; 453 mwifiex_disable_wake(adapter); 454 return -EFAULT; 455 } 456 457 mwifiex_dbg(adapter, INFO, 458 "cmd: suspend with MMC_PM_KEEP_POWER\n"); 459 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 460 461 /* Indicate device suspended */ 462 adapter->is_suspended = true; 463 adapter->hs_enabling = false; 464 465 return ret; 466 } 467 468 /* Device ID for SD8786 */ 469 #define SDIO_DEVICE_ID_MARVELL_8786 (0x9116) 470 /* Device ID for SD8787 */ 471 #define SDIO_DEVICE_ID_MARVELL_8787 (0x9119) 472 /* Device ID for SD8797 */ 473 #define SDIO_DEVICE_ID_MARVELL_8797 (0x9129) 474 /* Device ID for SD8897 */ 475 #define SDIO_DEVICE_ID_MARVELL_8897 (0x912d) 476 /* Device ID for SD8887 */ 477 #define SDIO_DEVICE_ID_MARVELL_8887 (0x9135) 478 /* Device ID for SD8801 */ 479 #define SDIO_DEVICE_ID_MARVELL_8801 (0x9139) 480 /* Device ID for SD8997 */ 481 #define SDIO_DEVICE_ID_MARVELL_8997 (0x9141) 482 483 484 /* WLAN IDs */ 485 static const struct sdio_device_id mwifiex_ids[] = { 486 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8786), 487 .driver_data = (unsigned long) &mwifiex_sdio_sd8786}, 488 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787), 489 .driver_data = (unsigned long) &mwifiex_sdio_sd8787}, 490 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797), 491 .driver_data = (unsigned long) &mwifiex_sdio_sd8797}, 492 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897), 493 .driver_data = (unsigned long) &mwifiex_sdio_sd8897}, 494 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887), 495 .driver_data = (unsigned long)&mwifiex_sdio_sd8887}, 496 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8801), 497 .driver_data = (unsigned long)&mwifiex_sdio_sd8801}, 498 {SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997), 499 .driver_data = (unsigned long)&mwifiex_sdio_sd8997}, 500 {}, 501 }; 502 503 MODULE_DEVICE_TABLE(sdio, mwifiex_ids); 504 505 static const struct dev_pm_ops mwifiex_sdio_pm_ops = { 506 .suspend = mwifiex_sdio_suspend, 507 .resume = mwifiex_sdio_resume, 508 }; 509 510 static struct sdio_driver mwifiex_sdio = { 511 .name = "mwifiex_sdio", 512 .id_table = mwifiex_ids, 513 .probe = mwifiex_sdio_probe, 514 .remove = mwifiex_sdio_remove, 515 .drv = { 516 .owner = THIS_MODULE, 517 .pm = &mwifiex_sdio_pm_ops, 518 } 519 }; 520 521 /* 522 * This function wakes up the card. 523 * 524 * A host power up command is written to the card configuration 525 * register to wake up the card. 526 */ 527 static int mwifiex_pm_wakeup_card(struct mwifiex_adapter *adapter) 528 { 529 mwifiex_dbg(adapter, EVENT, 530 "event: wakeup device...\n"); 531 532 return mwifiex_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); 533 } 534 535 /* 536 * This function is called after the card has woken up. 537 * 538 * The card configuration register is reset. 539 */ 540 static int mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter) 541 { 542 mwifiex_dbg(adapter, EVENT, 543 "cmd: wakeup device completed\n"); 544 545 return mwifiex_write_reg(adapter, CONFIGURATION_REG, 0); 546 } 547 548 static int mwifiex_sdio_dnld_fw(struct mwifiex_adapter *adapter, 549 struct mwifiex_fw_image *fw) 550 { 551 struct sdio_mmc_card *card = adapter->card; 552 int ret; 553 554 sdio_claim_host(card->func); 555 ret = mwifiex_dnld_fw(adapter, fw); 556 sdio_release_host(card->func); 557 558 return ret; 559 } 560 561 /* 562 * This function is used to initialize IO ports for the 563 * chipsets supporting SDIO new mode eg SD8897. 564 */ 565 static int mwifiex_init_sdio_new_mode(struct mwifiex_adapter *adapter) 566 { 567 u8 reg; 568 struct sdio_mmc_card *card = adapter->card; 569 570 adapter->ioport = MEM_PORT; 571 572 /* enable sdio new mode */ 573 if (mwifiex_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®)) 574 return -1; 575 if (mwifiex_write_reg(adapter, card->reg->card_cfg_2_1_reg, 576 reg | CMD53_NEW_MODE)) 577 return -1; 578 579 /* Configure cmd port and enable reading rx length from the register */ 580 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_0, ®)) 581 return -1; 582 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_0, 583 reg | CMD_PORT_RD_LEN_EN)) 584 return -1; 585 586 /* Enable Dnld/Upld ready auto reset for cmd port after cmd53 is 587 * completed 588 */ 589 if (mwifiex_read_reg(adapter, card->reg->cmd_cfg_1, ®)) 590 return -1; 591 if (mwifiex_write_reg(adapter, card->reg->cmd_cfg_1, 592 reg | CMD_PORT_AUTO_EN)) 593 return -1; 594 595 return 0; 596 } 597 598 /* This function initializes the IO ports. 599 * 600 * The following operations are performed - 601 * - Read the IO ports (0, 1 and 2) 602 * - Set host interrupt Reset-To-Read to clear 603 * - Set auto re-enable interrupt 604 */ 605 static int mwifiex_init_sdio_ioport(struct mwifiex_adapter *adapter) 606 { 607 u8 reg; 608 struct sdio_mmc_card *card = adapter->card; 609 610 adapter->ioport = 0; 611 612 if (card->supports_sdio_new_mode) { 613 if (mwifiex_init_sdio_new_mode(adapter)) 614 return -1; 615 goto cont; 616 } 617 618 /* Read the IO port */ 619 if (!mwifiex_read_reg(adapter, card->reg->io_port_0_reg, ®)) 620 adapter->ioport |= (reg & 0xff); 621 else 622 return -1; 623 624 if (!mwifiex_read_reg(adapter, card->reg->io_port_1_reg, ®)) 625 adapter->ioport |= ((reg & 0xff) << 8); 626 else 627 return -1; 628 629 if (!mwifiex_read_reg(adapter, card->reg->io_port_2_reg, ®)) 630 adapter->ioport |= ((reg & 0xff) << 16); 631 else 632 return -1; 633 cont: 634 mwifiex_dbg(adapter, INFO, 635 "info: SDIO FUNC1 IO port: %#x\n", adapter->ioport); 636 637 /* Set Host interrupt reset to read to clear */ 638 if (!mwifiex_read_reg(adapter, card->reg->host_int_rsr_reg, ®)) 639 mwifiex_write_reg(adapter, card->reg->host_int_rsr_reg, 640 reg | card->reg->sdio_int_mask); 641 else 642 return -1; 643 644 /* Dnld/Upld ready set to auto reset */ 645 if (!mwifiex_read_reg(adapter, card->reg->card_misc_cfg_reg, ®)) 646 mwifiex_write_reg(adapter, card->reg->card_misc_cfg_reg, 647 reg | AUTO_RE_ENABLE_INT); 648 else 649 return -1; 650 651 return 0; 652 } 653 654 /* 655 * This function sends data to the card. 656 */ 657 static int mwifiex_write_data_to_card(struct mwifiex_adapter *adapter, 658 u8 *payload, u32 pkt_len, u32 port) 659 { 660 u32 i = 0; 661 int ret; 662 663 do { 664 ret = mwifiex_write_data_sync(adapter, payload, pkt_len, port); 665 if (ret) { 666 i++; 667 mwifiex_dbg(adapter, ERROR, 668 "host_to_card, write iomem\t" 669 "(%d) failed: %d\n", i, ret); 670 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) 671 mwifiex_dbg(adapter, ERROR, 672 "write CFG reg failed\n"); 673 674 ret = -1; 675 if (i > MAX_WRITE_IOMEM_RETRY) 676 return ret; 677 } 678 } while (ret == -1); 679 680 return ret; 681 } 682 683 /* 684 * This function gets the read port. 685 * 686 * If control port bit is set in MP read bitmap, the control port 687 * is returned, otherwise the current read port is returned and 688 * the value is increased (provided it does not reach the maximum 689 * limit, in which case it is reset to 1) 690 */ 691 static int mwifiex_get_rd_port(struct mwifiex_adapter *adapter, u8 *port) 692 { 693 struct sdio_mmc_card *card = adapter->card; 694 const struct mwifiex_sdio_card_reg *reg = card->reg; 695 u32 rd_bitmap = card->mp_rd_bitmap; 696 697 mwifiex_dbg(adapter, DATA, 698 "data: mp_rd_bitmap=0x%08x\n", rd_bitmap); 699 700 if (card->supports_sdio_new_mode) { 701 if (!(rd_bitmap & reg->data_port_mask)) 702 return -1; 703 } else { 704 if (!(rd_bitmap & (CTRL_PORT_MASK | reg->data_port_mask))) 705 return -1; 706 } 707 708 if ((card->has_control_mask) && 709 (card->mp_rd_bitmap & CTRL_PORT_MASK)) { 710 card->mp_rd_bitmap &= (u32) (~CTRL_PORT_MASK); 711 *port = CTRL_PORT; 712 mwifiex_dbg(adapter, DATA, 713 "data: port=%d mp_rd_bitmap=0x%08x\n", 714 *port, card->mp_rd_bitmap); 715 return 0; 716 } 717 718 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port))) 719 return -1; 720 721 /* We are now handling the SDIO data ports */ 722 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port)); 723 *port = card->curr_rd_port; 724 725 if (++card->curr_rd_port == card->max_ports) 726 card->curr_rd_port = reg->start_rd_port; 727 728 mwifiex_dbg(adapter, DATA, 729 "data: port=%d mp_rd_bitmap=0x%08x -> 0x%08x\n", 730 *port, rd_bitmap, card->mp_rd_bitmap); 731 732 return 0; 733 } 734 735 /* 736 * This function gets the write port for data. 737 * 738 * The current write port is returned if available and the value is 739 * increased (provided it does not reach the maximum limit, in which 740 * case it is reset to 1) 741 */ 742 static int mwifiex_get_wr_port_data(struct mwifiex_adapter *adapter, u32 *port) 743 { 744 struct sdio_mmc_card *card = adapter->card; 745 const struct mwifiex_sdio_card_reg *reg = card->reg; 746 u32 wr_bitmap = card->mp_wr_bitmap; 747 748 mwifiex_dbg(adapter, DATA, 749 "data: mp_wr_bitmap=0x%08x\n", wr_bitmap); 750 751 if (!(wr_bitmap & card->mp_data_port_mask)) { 752 adapter->data_sent = true; 753 return -EBUSY; 754 } 755 756 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { 757 card->mp_wr_bitmap &= (u32) (~(1 << card->curr_wr_port)); 758 *port = card->curr_wr_port; 759 if (++card->curr_wr_port == card->mp_end_port) 760 card->curr_wr_port = reg->start_wr_port; 761 } else { 762 adapter->data_sent = true; 763 return -EBUSY; 764 } 765 766 if ((card->has_control_mask) && (*port == CTRL_PORT)) { 767 mwifiex_dbg(adapter, ERROR, 768 "invalid data port=%d cur port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", 769 *port, card->curr_wr_port, wr_bitmap, 770 card->mp_wr_bitmap); 771 return -1; 772 } 773 774 mwifiex_dbg(adapter, DATA, 775 "data: port=%d mp_wr_bitmap=0x%08x -> 0x%08x\n", 776 *port, wr_bitmap, card->mp_wr_bitmap); 777 778 return 0; 779 } 780 781 /* 782 * This function polls the card status. 783 */ 784 static int 785 mwifiex_sdio_poll_card_status(struct mwifiex_adapter *adapter, u8 bits) 786 { 787 struct sdio_mmc_card *card = adapter->card; 788 u32 tries; 789 u8 cs; 790 791 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 792 if (mwifiex_read_reg(adapter, card->reg->poll_reg, &cs)) 793 break; 794 else if ((cs & bits) == bits) 795 return 0; 796 797 usleep_range(10, 20); 798 } 799 800 mwifiex_dbg(adapter, ERROR, 801 "poll card status failed, tries = %d\n", tries); 802 803 return -1; 804 } 805 806 /* 807 * This function disables the host interrupt. 808 * 809 * The host interrupt mask is read, the disable bit is reset and 810 * written back to the card host interrupt mask register. 811 */ 812 static void mwifiex_sdio_disable_host_int(struct mwifiex_adapter *adapter) 813 { 814 struct sdio_mmc_card *card = adapter->card; 815 struct sdio_func *func = card->func; 816 817 sdio_claim_host(func); 818 mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 0); 819 sdio_release_irq(func); 820 sdio_release_host(func); 821 } 822 823 /* 824 * This function reads the interrupt status from card. 825 */ 826 static void mwifiex_interrupt_status(struct mwifiex_adapter *adapter) 827 { 828 struct sdio_mmc_card *card = adapter->card; 829 u8 sdio_ireg; 830 unsigned long flags; 831 832 if (mwifiex_read_data_sync(adapter, card->mp_regs, 833 card->reg->max_mp_regs, 834 REG_PORT | MWIFIEX_SDIO_BYTE_MODE_MASK, 0)) { 835 mwifiex_dbg(adapter, ERROR, "read mp_regs failed\n"); 836 return; 837 } 838 839 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg]; 840 if (sdio_ireg) { 841 /* 842 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS 843 * For SDIO new mode CMD port interrupts 844 * DN_LD_CMD_PORT_HOST_INT_STATUS and/or 845 * UP_LD_CMD_PORT_HOST_INT_STATUS 846 * Clear the interrupt status register 847 */ 848 mwifiex_dbg(adapter, INTR, 849 "int: sdio_ireg = %#x\n", sdio_ireg); 850 spin_lock_irqsave(&adapter->int_lock, flags); 851 adapter->int_status |= sdio_ireg; 852 spin_unlock_irqrestore(&adapter->int_lock, flags); 853 } 854 } 855 856 /* 857 * SDIO interrupt handler. 858 * 859 * This function reads the interrupt status from firmware and handles 860 * the interrupt in current thread (ksdioirqd) right away. 861 */ 862 static void 863 mwifiex_sdio_interrupt(struct sdio_func *func) 864 { 865 struct mwifiex_adapter *adapter; 866 struct sdio_mmc_card *card; 867 868 card = sdio_get_drvdata(func); 869 if (!card || !card->adapter) { 870 pr_err("int: func=%p card=%p adapter=%p\n", 871 func, card, card ? card->adapter : NULL); 872 return; 873 } 874 adapter = card->adapter; 875 876 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) 877 adapter->ps_state = PS_STATE_AWAKE; 878 879 mwifiex_interrupt_status(adapter); 880 mwifiex_main_process(adapter); 881 } 882 883 /* 884 * This function enables the host interrupt. 885 * 886 * The host interrupt enable mask is written to the card 887 * host interrupt mask register. 888 */ 889 static int mwifiex_sdio_enable_host_int(struct mwifiex_adapter *adapter) 890 { 891 struct sdio_mmc_card *card = adapter->card; 892 struct sdio_func *func = card->func; 893 int ret; 894 895 sdio_claim_host(func); 896 897 /* Request the SDIO IRQ */ 898 ret = sdio_claim_irq(func, mwifiex_sdio_interrupt); 899 if (ret) { 900 mwifiex_dbg(adapter, ERROR, 901 "claim irq failed: ret=%d\n", ret); 902 goto out; 903 } 904 905 /* Simply write the mask to the register */ 906 ret = mwifiex_write_reg_locked(func, card->reg->host_int_mask_reg, 907 card->reg->host_int_enable); 908 if (ret) { 909 mwifiex_dbg(adapter, ERROR, 910 "enable host interrupt failed\n"); 911 sdio_release_irq(func); 912 } 913 914 out: 915 sdio_release_host(func); 916 return ret; 917 } 918 919 /* 920 * This function sends a data buffer to the card. 921 */ 922 static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, 923 u32 *type, u8 *buffer, 924 u32 npayload, u32 ioport) 925 { 926 int ret; 927 u32 nb; 928 929 if (!buffer) { 930 mwifiex_dbg(adapter, ERROR, 931 "%s: buffer is NULL\n", __func__); 932 return -1; 933 } 934 935 ret = mwifiex_read_data_sync(adapter, buffer, npayload, ioport, 1); 936 937 if (ret) { 938 mwifiex_dbg(adapter, ERROR, 939 "%s: read iomem failed: %d\n", __func__, 940 ret); 941 return -1; 942 } 943 944 nb = get_unaligned_le16((buffer)); 945 if (nb > npayload) { 946 mwifiex_dbg(adapter, ERROR, 947 "%s: invalid packet, nb=%d npayload=%d\n", 948 __func__, nb, npayload); 949 return -1; 950 } 951 952 *type = get_unaligned_le16((buffer + 2)); 953 954 return ret; 955 } 956 957 /* 958 * This function downloads the firmware to the card. 959 * 960 * Firmware is downloaded to the card in blocks. Every block download 961 * is tested for CRC errors, and retried a number of times before 962 * returning failure. 963 */ 964 static int mwifiex_prog_fw_w_helper(struct mwifiex_adapter *adapter, 965 struct mwifiex_fw_image *fw) 966 { 967 struct sdio_mmc_card *card = adapter->card; 968 const struct mwifiex_sdio_card_reg *reg = card->reg; 969 int ret; 970 u8 *firmware = fw->fw_buf; 971 u32 firmware_len = fw->fw_len; 972 u32 offset = 0; 973 u8 base0, base1; 974 u8 *fwbuf; 975 u16 len = 0; 976 u32 txlen, tx_blocks = 0, tries; 977 u32 i = 0; 978 979 if (!firmware_len) { 980 mwifiex_dbg(adapter, ERROR, 981 "firmware image not found! Terminating download\n"); 982 return -1; 983 } 984 985 mwifiex_dbg(adapter, INFO, 986 "info: downloading FW image (%d bytes)\n", 987 firmware_len); 988 989 /* Assume that the allocated buffer is 8-byte aligned */ 990 fwbuf = kzalloc(MWIFIEX_UPLD_SIZE, GFP_KERNEL); 991 if (!fwbuf) 992 return -ENOMEM; 993 994 sdio_claim_host(card->func); 995 996 /* Perform firmware data transfer */ 997 do { 998 /* The host polls for the DN_LD_CARD_RDY and CARD_IO_READY 999 bits */ 1000 ret = mwifiex_sdio_poll_card_status(adapter, CARD_IO_READY | 1001 DN_LD_CARD_RDY); 1002 if (ret) { 1003 mwifiex_dbg(adapter, ERROR, 1004 "FW download with helper:\t" 1005 "poll status timeout @ %d\n", offset); 1006 goto done; 1007 } 1008 1009 /* More data? */ 1010 if (offset >= firmware_len) 1011 break; 1012 1013 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 1014 ret = mwifiex_read_reg(adapter, reg->base_0_reg, 1015 &base0); 1016 if (ret) { 1017 mwifiex_dbg(adapter, ERROR, 1018 "dev BASE0 register read failed:\t" 1019 "base0=%#04X(%d). Terminating dnld\n", 1020 base0, base0); 1021 goto done; 1022 } 1023 ret = mwifiex_read_reg(adapter, reg->base_1_reg, 1024 &base1); 1025 if (ret) { 1026 mwifiex_dbg(adapter, ERROR, 1027 "dev BASE1 register read failed:\t" 1028 "base1=%#04X(%d). Terminating dnld\n", 1029 base1, base1); 1030 goto done; 1031 } 1032 len = (u16) (((base1 & 0xff) << 8) | (base0 & 0xff)); 1033 1034 if (len) 1035 break; 1036 1037 usleep_range(10, 20); 1038 } 1039 1040 if (!len) { 1041 break; 1042 } else if (len > MWIFIEX_UPLD_SIZE) { 1043 mwifiex_dbg(adapter, ERROR, 1044 "FW dnld failed @ %d, invalid length %d\n", 1045 offset, len); 1046 ret = -1; 1047 goto done; 1048 } 1049 1050 txlen = len; 1051 1052 if (len & BIT(0)) { 1053 i++; 1054 if (i > MAX_WRITE_IOMEM_RETRY) { 1055 mwifiex_dbg(adapter, ERROR, 1056 "FW dnld failed @ %d, over max retry\n", 1057 offset); 1058 ret = -1; 1059 goto done; 1060 } 1061 mwifiex_dbg(adapter, ERROR, 1062 "CRC indicated by the helper:\t" 1063 "len = 0x%04X, txlen = %d\n", len, txlen); 1064 len &= ~BIT(0); 1065 /* Setting this to 0 to resend from same offset */ 1066 txlen = 0; 1067 } else { 1068 i = 0; 1069 1070 /* Set blocksize to transfer - checking for last 1071 block */ 1072 if (firmware_len - offset < txlen) 1073 txlen = firmware_len - offset; 1074 1075 tx_blocks = (txlen + MWIFIEX_SDIO_BLOCK_SIZE - 1) 1076 / MWIFIEX_SDIO_BLOCK_SIZE; 1077 1078 /* Copy payload to buffer */ 1079 memmove(fwbuf, &firmware[offset], txlen); 1080 } 1081 1082 ret = mwifiex_write_data_sync(adapter, fwbuf, tx_blocks * 1083 MWIFIEX_SDIO_BLOCK_SIZE, 1084 adapter->ioport); 1085 if (ret) { 1086 mwifiex_dbg(adapter, ERROR, 1087 "FW download, write iomem (%d) failed @ %d\n", 1088 i, offset); 1089 if (mwifiex_write_reg(adapter, CONFIGURATION_REG, 0x04)) 1090 mwifiex_dbg(adapter, ERROR, 1091 "write CFG reg failed\n"); 1092 1093 ret = -1; 1094 goto done; 1095 } 1096 1097 offset += txlen; 1098 } while (true); 1099 1100 mwifiex_dbg(adapter, MSG, 1101 "info: FW download over, size %d bytes\n", offset); 1102 1103 ret = 0; 1104 done: 1105 sdio_release_host(card->func); 1106 kfree(fwbuf); 1107 return ret; 1108 } 1109 1110 /* 1111 * This function decode sdio aggreation pkt. 1112 * 1113 * Based on the the data block size and pkt_len, 1114 * skb data will be decoded to few packets. 1115 */ 1116 static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter, 1117 struct sk_buff *skb) 1118 { 1119 u32 total_pkt_len, pkt_len; 1120 struct sk_buff *skb_deaggr; 1121 u16 blk_size; 1122 u8 blk_num; 1123 u8 *data; 1124 1125 data = skb->data; 1126 total_pkt_len = skb->len; 1127 1128 while (total_pkt_len >= (SDIO_HEADER_OFFSET + adapter->intf_hdr_len)) { 1129 if (total_pkt_len < adapter->sdio_rx_block_size) 1130 break; 1131 blk_num = *(data + BLOCK_NUMBER_OFFSET); 1132 blk_size = adapter->sdio_rx_block_size * blk_num; 1133 if (blk_size > total_pkt_len) { 1134 mwifiex_dbg(adapter, ERROR, 1135 "%s: error in blk_size,\t" 1136 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n", 1137 __func__, blk_num, blk_size, total_pkt_len); 1138 break; 1139 } 1140 pkt_len = get_unaligned_le16((data + 1141 SDIO_HEADER_OFFSET)); 1142 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) { 1143 mwifiex_dbg(adapter, ERROR, 1144 "%s: error in pkt_len,\t" 1145 "pkt_len=%d, blk_size=%d\n", 1146 __func__, pkt_len, blk_size); 1147 break; 1148 } 1149 1150 skb_deaggr = mwifiex_alloc_dma_align_buf(pkt_len, GFP_KERNEL); 1151 if (!skb_deaggr) 1152 break; 1153 skb_put(skb_deaggr, pkt_len); 1154 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len); 1155 skb_pull(skb_deaggr, adapter->intf_hdr_len); 1156 1157 mwifiex_handle_rx_packet(adapter, skb_deaggr); 1158 data += blk_size; 1159 total_pkt_len -= blk_size; 1160 } 1161 } 1162 1163 /* 1164 * This function decodes a received packet. 1165 * 1166 * Based on the type, the packet is treated as either a data, or 1167 * a command response, or an event, and the correct handler 1168 * function is invoked. 1169 */ 1170 static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, 1171 struct sk_buff *skb, u32 upld_typ) 1172 { 1173 u8 *cmd_buf; 1174 u16 pkt_len; 1175 struct mwifiex_rxinfo *rx_info; 1176 1177 pkt_len = get_unaligned_le16(skb->data); 1178 1179 if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) { 1180 skb_trim(skb, pkt_len); 1181 skb_pull(skb, adapter->intf_hdr_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 = get_unaligned_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 + card->mpa_rx.start_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 = get_unaligned_le16(&curr_ptr[0]); 1396 pkt_type = get_unaligned_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 <= adapter->intf_hdr_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 <= adapter->intf_hdr_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 + card->mpa_tx.start_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 put_unaligned_le16((u16)pkt_len, payload + 0); 1878 put_unaligned_le16((u32)type, payload + 2); 1879 1880 1881 /* 1882 * This is SDIO specific header 1883 * u16 length, 1884 * u16 type (MWIFIEX_TYPE_DATA = 0, MWIFIEX_TYPE_CMD = 1, 1885 * MWIFIEX_TYPE_EVENT = 3) 1886 */ 1887 if (type == MWIFIEX_TYPE_DATA) { 1888 ret = mwifiex_get_wr_port_data(adapter, &port); 1889 if (ret) { 1890 mwifiex_dbg(adapter, ERROR, 1891 "%s: no wr_port available\n", 1892 __func__); 1893 return ret; 1894 } 1895 } else { 1896 adapter->cmd_sent = true; 1897 /* Type must be MWIFIEX_TYPE_CMD */ 1898 1899 if (pkt_len <= adapter->intf_hdr_len || 1900 pkt_len > MWIFIEX_UPLD_SIZE) 1901 mwifiex_dbg(adapter, ERROR, 1902 "%s: payload=%p, nb=%d\n", 1903 __func__, payload, pkt_len); 1904 1905 if (card->supports_sdio_new_mode) 1906 port = CMD_PORT_SLCT; 1907 } 1908 1909 /* Transfer data to card */ 1910 pkt_len = buf_block_len * blk_size; 1911 1912 if (tx_param) 1913 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, 1914 port, tx_param->next_pkt_len 1915 ); 1916 else 1917 ret = mwifiex_host_to_card_mp_aggr(adapter, payload, pkt_len, 1918 port, 0); 1919 1920 if (ret) { 1921 if (type == MWIFIEX_TYPE_CMD) 1922 adapter->cmd_sent = false; 1923 if (type == MWIFIEX_TYPE_DATA) { 1924 adapter->data_sent = false; 1925 /* restore curr_wr_port in error cases */ 1926 card->curr_wr_port = port; 1927 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port); 1928 } 1929 } else { 1930 if (type == MWIFIEX_TYPE_DATA) { 1931 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) 1932 adapter->data_sent = true; 1933 else 1934 adapter->data_sent = false; 1935 } 1936 } 1937 1938 return ret; 1939 } 1940 1941 /* 1942 * This function allocates the MPA Tx and Rx buffers. 1943 */ 1944 static int mwifiex_alloc_sdio_mpa_buffers(struct mwifiex_adapter *adapter, 1945 u32 mpa_tx_buf_size, u32 mpa_rx_buf_size) 1946 { 1947 struct sdio_mmc_card *card = adapter->card; 1948 u32 rx_buf_size; 1949 int ret = 0; 1950 1951 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); 1952 if (!card->mpa_tx.buf) { 1953 ret = -1; 1954 goto error; 1955 } 1956 1957 card->mpa_tx.buf_size = mpa_tx_buf_size; 1958 1959 rx_buf_size = max_t(u32, mpa_rx_buf_size, 1960 (u32)SDIO_MAX_AGGR_BUF_SIZE); 1961 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL); 1962 if (!card->mpa_rx.buf) { 1963 ret = -1; 1964 goto error; 1965 } 1966 1967 card->mpa_rx.buf_size = rx_buf_size; 1968 1969 error: 1970 if (ret) { 1971 kfree(card->mpa_tx.buf); 1972 kfree(card->mpa_rx.buf); 1973 card->mpa_tx.buf_size = 0; 1974 card->mpa_rx.buf_size = 0; 1975 } 1976 1977 return ret; 1978 } 1979 1980 /* 1981 * This function unregisters the SDIO device. 1982 * 1983 * The SDIO IRQ is released, the function is disabled and driver 1984 * data is set to null. 1985 */ 1986 static void 1987 mwifiex_unregister_dev(struct mwifiex_adapter *adapter) 1988 { 1989 struct sdio_mmc_card *card = adapter->card; 1990 1991 if (adapter->card) { 1992 card->adapter = NULL; 1993 sdio_claim_host(card->func); 1994 sdio_disable_func(card->func); 1995 sdio_release_host(card->func); 1996 } 1997 } 1998 1999 /* 2000 * This function registers the SDIO device. 2001 * 2002 * SDIO IRQ is claimed, block size is set and driver data is initialized. 2003 */ 2004 static int mwifiex_register_dev(struct mwifiex_adapter *adapter) 2005 { 2006 int ret; 2007 struct sdio_mmc_card *card = adapter->card; 2008 struct sdio_func *func = card->func; 2009 2010 /* save adapter pointer in card */ 2011 card->adapter = adapter; 2012 adapter->tx_buf_size = card->tx_buf_size; 2013 2014 sdio_claim_host(func); 2015 2016 /* Set block size */ 2017 ret = sdio_set_block_size(card->func, MWIFIEX_SDIO_BLOCK_SIZE); 2018 sdio_release_host(func); 2019 if (ret) { 2020 mwifiex_dbg(adapter, ERROR, 2021 "cannot set SDIO block size\n"); 2022 return ret; 2023 } 2024 2025 strcpy(adapter->fw_name, card->firmware); 2026 if (card->fw_dump_enh) { 2027 adapter->mem_type_mapping_tbl = generic_mem_type_map; 2028 adapter->num_mem_types = 1; 2029 } else { 2030 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl; 2031 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl); 2032 } 2033 2034 return 0; 2035 } 2036 2037 /* 2038 * This function initializes the SDIO driver. 2039 * 2040 * The following initializations steps are followed - 2041 * - Read the Host interrupt status register to acknowledge 2042 * the first interrupt got from bootloader 2043 * - Disable host interrupt mask register 2044 * - Get SDIO port 2045 * - Initialize SDIO variables in card 2046 * - Allocate MP registers 2047 * - Allocate MPA Tx and Rx buffers 2048 */ 2049 static int mwifiex_init_sdio(struct mwifiex_adapter *adapter) 2050 { 2051 struct sdio_mmc_card *card = adapter->card; 2052 const struct mwifiex_sdio_card_reg *reg = card->reg; 2053 int ret; 2054 u8 sdio_ireg; 2055 2056 sdio_set_drvdata(card->func, card); 2057 2058 /* 2059 * Read the host_int_status_reg for ACK the first interrupt got 2060 * from the bootloader. If we don't do this we get a interrupt 2061 * as soon as we register the irq. 2062 */ 2063 mwifiex_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); 2064 2065 /* Get SDIO ioport */ 2066 mwifiex_init_sdio_ioport(adapter); 2067 2068 /* Initialize SDIO variables in card */ 2069 card->mp_rd_bitmap = 0; 2070 card->mp_wr_bitmap = 0; 2071 card->curr_rd_port = reg->start_rd_port; 2072 card->curr_wr_port = reg->start_wr_port; 2073 2074 card->mp_data_port_mask = reg->data_port_mask; 2075 2076 card->mpa_tx.buf_len = 0; 2077 card->mpa_tx.pkt_cnt = 0; 2078 card->mpa_tx.start_port = 0; 2079 2080 card->mpa_tx.enabled = 1; 2081 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit; 2082 2083 card->mpa_rx.buf_len = 0; 2084 card->mpa_rx.pkt_cnt = 0; 2085 card->mpa_rx.start_port = 0; 2086 2087 card->mpa_rx.enabled = 1; 2088 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit; 2089 2090 /* Allocate buffers for SDIO MP-A */ 2091 card->mp_regs = kzalloc(reg->max_mp_regs, GFP_KERNEL); 2092 if (!card->mp_regs) 2093 return -ENOMEM; 2094 2095 /* Allocate skb pointer buffers */ 2096 card->mpa_rx.skb_arr = kzalloc((sizeof(void *)) * 2097 card->mp_agg_pkt_limit, GFP_KERNEL); 2098 if (!card->mpa_rx.skb_arr) { 2099 kfree(card->mp_regs); 2100 return -ENOMEM; 2101 } 2102 2103 card->mpa_rx.len_arr = kzalloc(sizeof(*card->mpa_rx.len_arr) * 2104 card->mp_agg_pkt_limit, GFP_KERNEL); 2105 if (!card->mpa_rx.len_arr) { 2106 kfree(card->mp_regs); 2107 kfree(card->mpa_rx.skb_arr); 2108 return -ENOMEM; 2109 } 2110 2111 ret = mwifiex_alloc_sdio_mpa_buffers(adapter, 2112 card->mp_tx_agg_buf_size, 2113 card->mp_rx_agg_buf_size); 2114 2115 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */ 2116 if (ret && (card->mp_tx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX || 2117 card->mp_rx_agg_buf_size == MWIFIEX_MP_AGGR_BUF_SIZE_MAX)) { 2118 /* Disable rx single port aggregation */ 2119 adapter->host_disable_sdio_rx_aggr = true; 2120 2121 ret = mwifiex_alloc_sdio_mpa_buffers 2122 (adapter, MWIFIEX_MP_AGGR_BUF_SIZE_32K, 2123 MWIFIEX_MP_AGGR_BUF_SIZE_32K); 2124 if (ret) { 2125 /* Disable multi port aggregation */ 2126 card->mpa_tx.enabled = 0; 2127 card->mpa_rx.enabled = 0; 2128 } 2129 } 2130 2131 adapter->auto_tdls = card->can_auto_tdls; 2132 adapter->ext_scan = card->can_ext_scan; 2133 return 0; 2134 } 2135 2136 /* 2137 * This function resets the MPA Tx and Rx buffers. 2138 */ 2139 static void mwifiex_cleanup_mpa_buf(struct mwifiex_adapter *adapter) 2140 { 2141 struct sdio_mmc_card *card = adapter->card; 2142 2143 MP_TX_AGGR_BUF_RESET(card); 2144 MP_RX_AGGR_BUF_RESET(card); 2145 } 2146 2147 /* 2148 * This function cleans up the allocated card buffers. 2149 * 2150 * The following are freed by this function - 2151 * - MP registers 2152 * - MPA Tx buffer 2153 * - MPA Rx buffer 2154 */ 2155 static void mwifiex_cleanup_sdio(struct mwifiex_adapter *adapter) 2156 { 2157 struct sdio_mmc_card *card = adapter->card; 2158 2159 cancel_work_sync(&card->work); 2160 2161 kfree(card->mp_regs); 2162 kfree(card->mpa_rx.skb_arr); 2163 kfree(card->mpa_rx.len_arr); 2164 kfree(card->mpa_tx.buf); 2165 kfree(card->mpa_rx.buf); 2166 } 2167 2168 /* 2169 * This function updates the MP end port in card. 2170 */ 2171 static void 2172 mwifiex_update_mp_end_port(struct mwifiex_adapter *adapter, u16 port) 2173 { 2174 struct sdio_mmc_card *card = adapter->card; 2175 const struct mwifiex_sdio_card_reg *reg = card->reg; 2176 int i; 2177 2178 card->mp_end_port = port; 2179 2180 card->mp_data_port_mask = reg->data_port_mask; 2181 2182 if (reg->start_wr_port) { 2183 for (i = 1; i <= card->max_ports - card->mp_end_port; i++) 2184 card->mp_data_port_mask &= 2185 ~(1 << (card->max_ports - i)); 2186 } 2187 2188 card->curr_wr_port = reg->start_wr_port; 2189 2190 mwifiex_dbg(adapter, CMD, 2191 "cmd: mp_end_port %d, data port mask 0x%x\n", 2192 port, card->mp_data_port_mask); 2193 } 2194 2195 static void mwifiex_sdio_card_reset_work(struct mwifiex_adapter *adapter) 2196 { 2197 struct sdio_mmc_card *card = adapter->card; 2198 struct sdio_func *func = card->func; 2199 int ret; 2200 2201 mwifiex_shutdown_sw(adapter); 2202 2203 /* power cycle the adapter */ 2204 sdio_claim_host(func); 2205 mmc_hw_reset(func->card->host); 2206 sdio_release_host(func); 2207 2208 /* Previous save_adapter won't be valid after this. We will cancel 2209 * pending work requests. 2210 */ 2211 clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, &card->work_flags); 2212 clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags); 2213 2214 ret = mwifiex_reinit_sw(adapter); 2215 if (ret) 2216 dev_err(&func->dev, "reinit failed: %d\n", ret); 2217 } 2218 2219 /* This function read/write firmware */ 2220 static enum 2221 rdwr_status mwifiex_sdio_rdwr_firmware(struct mwifiex_adapter *adapter, 2222 u8 doneflag) 2223 { 2224 struct sdio_mmc_card *card = adapter->card; 2225 int ret, tries; 2226 u8 ctrl_data = 0; 2227 2228 sdio_writeb(card->func, card->reg->fw_dump_host_ready, 2229 card->reg->fw_dump_ctrl, &ret); 2230 if (ret) { 2231 mwifiex_dbg(adapter, ERROR, "SDIO Write ERR\n"); 2232 return RDWR_STATUS_FAILURE; 2233 } 2234 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 2235 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl, 2236 &ret); 2237 if (ret) { 2238 mwifiex_dbg(adapter, ERROR, "SDIO read err\n"); 2239 return RDWR_STATUS_FAILURE; 2240 } 2241 if (ctrl_data == FW_DUMP_DONE) 2242 break; 2243 if (doneflag && ctrl_data == doneflag) 2244 return RDWR_STATUS_DONE; 2245 if (ctrl_data != card->reg->fw_dump_host_ready) { 2246 mwifiex_dbg(adapter, WARN, 2247 "The ctrl reg was changed, re-try again\n"); 2248 sdio_writeb(card->func, card->reg->fw_dump_host_ready, 2249 card->reg->fw_dump_ctrl, &ret); 2250 if (ret) { 2251 mwifiex_dbg(adapter, ERROR, "SDIO write err\n"); 2252 return RDWR_STATUS_FAILURE; 2253 } 2254 } 2255 usleep_range(100, 200); 2256 } 2257 if (ctrl_data == card->reg->fw_dump_host_ready) { 2258 mwifiex_dbg(adapter, ERROR, 2259 "Fail to pull ctrl_data\n"); 2260 return RDWR_STATUS_FAILURE; 2261 } 2262 2263 return RDWR_STATUS_SUCCESS; 2264 } 2265 2266 /* This function dump firmware memory to file */ 2267 static void mwifiex_sdio_fw_dump(struct mwifiex_adapter *adapter) 2268 { 2269 struct sdio_mmc_card *card = adapter->card; 2270 int ret = 0; 2271 unsigned int reg, reg_start, reg_end; 2272 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0; 2273 enum rdwr_status stat; 2274 u32 memory_size; 2275 2276 if (!card->can_dump_fw) 2277 return; 2278 2279 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) { 2280 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 2281 2282 if (entry->mem_ptr) { 2283 vfree(entry->mem_ptr); 2284 entry->mem_ptr = NULL; 2285 } 2286 entry->mem_size = 0; 2287 } 2288 2289 mwifiex_pm_wakeup_card(adapter); 2290 sdio_claim_host(card->func); 2291 2292 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n"); 2293 2294 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); 2295 if (stat == RDWR_STATUS_FAILURE) 2296 goto done; 2297 2298 reg = card->reg->fw_dump_start; 2299 /* Read the number of the memories which will dump */ 2300 dump_num = sdio_readb(card->func, reg, &ret); 2301 if (ret) { 2302 mwifiex_dbg(adapter, ERROR, "SDIO read memory length err\n"); 2303 goto done; 2304 } 2305 2306 /* Read the length of every memory which will dump */ 2307 for (idx = 0; idx < dump_num; idx++) { 2308 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 2309 2310 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); 2311 if (stat == RDWR_STATUS_FAILURE) 2312 goto done; 2313 2314 memory_size = 0; 2315 reg = card->reg->fw_dump_start; 2316 for (i = 0; i < 4; i++) { 2317 read_reg = sdio_readb(card->func, reg, &ret); 2318 if (ret) { 2319 mwifiex_dbg(adapter, ERROR, "SDIO read err\n"); 2320 goto done; 2321 } 2322 memory_size |= (read_reg << i*8); 2323 reg++; 2324 } 2325 2326 if (memory_size == 0) { 2327 mwifiex_dbg(adapter, DUMP, "Firmware dump Finished!\n"); 2328 ret = mwifiex_write_reg(adapter, 2329 card->reg->fw_dump_ctrl, 2330 FW_DUMP_READ_DONE); 2331 if (ret) { 2332 mwifiex_dbg(adapter, ERROR, "SDIO write err\n"); 2333 return; 2334 } 2335 break; 2336 } 2337 2338 mwifiex_dbg(adapter, DUMP, 2339 "%s_SIZE=0x%x\n", entry->mem_name, memory_size); 2340 entry->mem_ptr = vmalloc(memory_size + 1); 2341 entry->mem_size = memory_size; 2342 if (!entry->mem_ptr) { 2343 mwifiex_dbg(adapter, ERROR, "Vmalloc %s failed\n", 2344 entry->mem_name); 2345 goto done; 2346 } 2347 dbg_ptr = entry->mem_ptr; 2348 end_ptr = dbg_ptr + memory_size; 2349 2350 doneflag = entry->done_flag; 2351 mwifiex_dbg(adapter, DUMP, 2352 "Start %s output, please wait...\n", 2353 entry->mem_name); 2354 2355 do { 2356 stat = mwifiex_sdio_rdwr_firmware(adapter, doneflag); 2357 if (stat == RDWR_STATUS_FAILURE) 2358 goto done; 2359 2360 reg_start = card->reg->fw_dump_start; 2361 reg_end = card->reg->fw_dump_end; 2362 for (reg = reg_start; reg <= reg_end; reg++) { 2363 *dbg_ptr = sdio_readb(card->func, reg, &ret); 2364 if (ret) { 2365 mwifiex_dbg(adapter, ERROR, 2366 "SDIO read err\n"); 2367 goto done; 2368 } 2369 if (dbg_ptr < end_ptr) 2370 dbg_ptr++; 2371 else 2372 mwifiex_dbg(adapter, ERROR, 2373 "Allocated buf not enough\n"); 2374 } 2375 2376 if (stat != RDWR_STATUS_DONE) 2377 continue; 2378 2379 mwifiex_dbg(adapter, DUMP, "%s done: size=0x%tx\n", 2380 entry->mem_name, dbg_ptr - entry->mem_ptr); 2381 break; 2382 } while (1); 2383 } 2384 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n"); 2385 2386 done: 2387 sdio_release_host(card->func); 2388 } 2389 2390 static void mwifiex_sdio_generic_fw_dump(struct mwifiex_adapter *adapter) 2391 { 2392 struct sdio_mmc_card *card = adapter->card; 2393 struct memory_type_mapping *entry = &generic_mem_type_map[0]; 2394 unsigned int reg, reg_start, reg_end; 2395 u8 start_flag = 0, done_flag = 0; 2396 u8 *dbg_ptr, *end_ptr; 2397 enum rdwr_status stat; 2398 int ret = -1, tries; 2399 2400 if (!card->fw_dump_enh) 2401 return; 2402 2403 if (entry->mem_ptr) { 2404 vfree(entry->mem_ptr); 2405 entry->mem_ptr = NULL; 2406 } 2407 entry->mem_size = 0; 2408 2409 mwifiex_pm_wakeup_card(adapter); 2410 sdio_claim_host(card->func); 2411 2412 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump start ==\n"); 2413 2414 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag); 2415 if (stat == RDWR_STATUS_FAILURE) 2416 goto done; 2417 2418 reg_start = card->reg->fw_dump_start; 2419 reg_end = card->reg->fw_dump_end; 2420 for (reg = reg_start; reg <= reg_end; reg++) { 2421 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 2422 start_flag = sdio_readb(card->func, reg, &ret); 2423 if (ret) { 2424 mwifiex_dbg(adapter, ERROR, 2425 "SDIO read err\n"); 2426 goto done; 2427 } 2428 if (start_flag == 0) 2429 break; 2430 if (tries == MAX_POLL_TRIES) { 2431 mwifiex_dbg(adapter, ERROR, 2432 "FW not ready to dump\n"); 2433 ret = -1; 2434 goto done; 2435 } 2436 } 2437 usleep_range(100, 200); 2438 } 2439 2440 entry->mem_ptr = vmalloc(0xf0000 + 1); 2441 if (!entry->mem_ptr) { 2442 ret = -1; 2443 goto done; 2444 } 2445 dbg_ptr = entry->mem_ptr; 2446 entry->mem_size = 0xf0000; 2447 end_ptr = dbg_ptr + entry->mem_size; 2448 2449 done_flag = entry->done_flag; 2450 mwifiex_dbg(adapter, DUMP, 2451 "Start %s output, please wait...\n", entry->mem_name); 2452 2453 while (true) { 2454 stat = mwifiex_sdio_rdwr_firmware(adapter, done_flag); 2455 if (stat == RDWR_STATUS_FAILURE) 2456 goto done; 2457 for (reg = reg_start; reg <= reg_end; reg++) { 2458 *dbg_ptr = sdio_readb(card->func, reg, &ret); 2459 if (ret) { 2460 mwifiex_dbg(adapter, ERROR, 2461 "SDIO read err\n"); 2462 goto done; 2463 } 2464 dbg_ptr++; 2465 if (dbg_ptr >= end_ptr) { 2466 u8 *tmp_ptr; 2467 2468 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1); 2469 if (!tmp_ptr) 2470 goto done; 2471 2472 memcpy(tmp_ptr, entry->mem_ptr, 2473 entry->mem_size); 2474 vfree(entry->mem_ptr); 2475 entry->mem_ptr = tmp_ptr; 2476 tmp_ptr = NULL; 2477 dbg_ptr = entry->mem_ptr + entry->mem_size; 2478 entry->mem_size += 0x4000; 2479 end_ptr = entry->mem_ptr + entry->mem_size; 2480 } 2481 } 2482 if (stat == RDWR_STATUS_DONE) { 2483 entry->mem_size = dbg_ptr - entry->mem_ptr; 2484 mwifiex_dbg(adapter, DUMP, "dump %s done size=0x%x\n", 2485 entry->mem_name, entry->mem_size); 2486 ret = 0; 2487 break; 2488 } 2489 } 2490 mwifiex_dbg(adapter, MSG, "== mwifiex firmware dump end ==\n"); 2491 2492 done: 2493 if (ret) { 2494 mwifiex_dbg(adapter, ERROR, "firmware dump failed\n"); 2495 if (entry->mem_ptr) { 2496 vfree(entry->mem_ptr); 2497 entry->mem_ptr = NULL; 2498 } 2499 entry->mem_size = 0; 2500 } 2501 sdio_release_host(card->func); 2502 } 2503 2504 static void mwifiex_sdio_device_dump_work(struct mwifiex_adapter *adapter) 2505 { 2506 struct sdio_mmc_card *card = adapter->card; 2507 int drv_info_size; 2508 void *drv_info; 2509 2510 drv_info_size = mwifiex_drv_info_dump(adapter, &drv_info); 2511 if (card->fw_dump_enh) 2512 mwifiex_sdio_generic_fw_dump(adapter); 2513 else 2514 mwifiex_sdio_fw_dump(adapter); 2515 mwifiex_upload_device_dump(adapter, drv_info, drv_info_size); 2516 } 2517 2518 static void mwifiex_sdio_work(struct work_struct *work) 2519 { 2520 struct sdio_mmc_card *card = 2521 container_of(work, struct sdio_mmc_card, work); 2522 2523 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, 2524 &card->work_flags)) 2525 mwifiex_sdio_device_dump_work(card->adapter); 2526 if (test_and_clear_bit(MWIFIEX_IFACE_WORK_CARD_RESET, 2527 &card->work_flags)) 2528 mwifiex_sdio_card_reset_work(card->adapter); 2529 } 2530 2531 /* This function resets the card */ 2532 static void mwifiex_sdio_card_reset(struct mwifiex_adapter *adapter) 2533 { 2534 struct sdio_mmc_card *card = adapter->card; 2535 2536 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_CARD_RESET, &card->work_flags)) 2537 schedule_work(&card->work); 2538 } 2539 2540 /* This function dumps FW information */ 2541 static void mwifiex_sdio_device_dump(struct mwifiex_adapter *adapter) 2542 { 2543 struct sdio_mmc_card *card = adapter->card; 2544 2545 if (!test_and_set_bit(MWIFIEX_IFACE_WORK_DEVICE_DUMP, 2546 &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