1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * NXP Wireless LAN device driver: SDIO specific handling 4 * 5 * Copyright 2011-2024 NXP 6 */ 7 8 #include <linux/firmware.h> 9 #include <linux/completion.h> 10 #include <linux/mmc/sdio.h> 11 #include <linux/mmc/sdio_ids.h> 12 #include <linux/mmc/sdio_func.h> 13 #include <linux/mmc/card.h> 14 #include <linux/mmc/host.h> 15 #include <linux/iopoll.h> 16 #include "cfg.h" 17 #include "util.h" 18 #include "fw.h" 19 #include "main.h" 20 #include "wmm.h" 21 #include "11n.h" 22 #include "sdio.h" 23 24 #define SDIO_VERSION "1.0" 25 26 /* Process deferred SDIO work items. */ 27 static void nxpwifi_sdio_work(struct work_struct *work); 28 29 static struct nxpwifi_if_ops sdio_ops; 30 31 static const struct nxpwifi_sdio_card_reg nxpwifi_reg_iw61x = { 32 .start_rd_port = 0, 33 .start_wr_port = 0, 34 .base_0_reg = 0xF8, 35 .base_1_reg = 0xF9, 36 .poll_reg = 0x5C, 37 .host_int_enable = UP_LD_HOST_INT_MASK | DN_LD_HOST_INT_MASK | 38 CMD_PORT_UPLD_INT_MASK | CMD_PORT_DNLD_INT_MASK, 39 .host_int_rsr_reg = 0x4, 40 .host_int_status_reg = 0x0C, 41 .host_int_mask_reg = 0x08, 42 .host_strap_reg = 0xF4, 43 .host_strap_mask = 0x01, 44 .host_strap_value = 0x00, 45 .status_reg_0 = 0xE8, 46 .status_reg_1 = 0xE9, 47 .sdio_int_mask = 0xff, 48 .data_port_mask = 0xffffffff, 49 .io_port_0_reg = 0xE4, 50 .io_port_1_reg = 0xE5, 51 .io_port_2_reg = 0xE6, 52 .max_mp_regs = 196, 53 .rd_bitmap_l = 0x10, 54 .rd_bitmap_u = 0x11, 55 .rd_bitmap_1l = 0x12, 56 .rd_bitmap_1u = 0x13, 57 .wr_bitmap_l = 0x14, 58 .wr_bitmap_u = 0x15, 59 .wr_bitmap_1l = 0x16, 60 .wr_bitmap_1u = 0x17, 61 .rd_len_p0_l = 0x18, 62 .rd_len_p0_u = 0x19, 63 .card_misc_cfg_reg = 0xd8, 64 .card_cfg_2_1_reg = 0xd9, 65 .cmd_rd_len_0 = 0xc0, 66 .cmd_rd_len_1 = 0xc1, 67 .cmd_rd_len_2 = 0xc2, 68 .cmd_rd_len_3 = 0xc3, 69 .cmd_cfg_0 = 0xc4, 70 .cmd_cfg_1 = 0xc5, 71 .cmd_cfg_2 = 0xc6, 72 .cmd_cfg_3 = 0xc7, 73 .fw_dump_host_ready = 0xcc, 74 .fw_dump_ctrl = 0xf9, 75 .fw_dump_start = 0xf1, 76 .fw_dump_end = 0xf8, 77 .func1_dump_reg_start = 0x10, 78 .func1_dump_reg_end = 0x17, 79 .func1_scratch_reg = 0xE8, 80 .func1_spec_reg_num = 13, 81 .func1_spec_reg_table = {0x08, 0x58, 0x5C, 0x5D, 0x60, 82 0x61, 0x62, 0x64, 0x65, 0x66, 83 0x68, 0x69, 0x6a}, 84 }; 85 86 static const struct nxpwifi_sdio_device nxpwifi_sdio_iw61x = { 87 .firmware = IW61X_SDIO_FW_NAME, 88 .reg = &nxpwifi_reg_iw61x, 89 .max_ports = 32, 90 .mp_agg_pkt_limit = 16, 91 .tx_buf_size = NXPWIFI_TX_DATA_BUF_SIZE_4K, 92 .mp_tx_agg_buf_size = NXPWIFI_MP_AGGR_BSIZE_MAX, 93 .mp_rx_agg_buf_size = NXPWIFI_MP_AGGR_BSIZE_MAX, 94 .can_dump_fw = true, 95 .fw_dump_enh = true, 96 .can_ext_scan = true, 97 }; 98 99 static struct memory_type_mapping generic_mem_type_map[] = { 100 {"DUMP", NULL, 0, 0xDD}, 101 }; 102 103 static struct memory_type_mapping mem_type_mapping_tbl[] = { 104 {"ITCM", NULL, 0, 0xF0}, 105 {"DTCM", NULL, 0, 0xF1}, 106 {"SQRAM", NULL, 0, 0xF2}, 107 {"APU", NULL, 0, 0xF3}, 108 {"CIU", NULL, 0, 0xF4}, 109 {"ICU", NULL, 0, 0xF5}, 110 {"MAC", NULL, 0, 0xF6}, 111 {"EXT7", NULL, 0, 0xF7}, 112 {"EXT8", NULL, 0, 0xF8}, 113 {"EXT9", NULL, 0, 0xF9}, 114 {"EXT10", NULL, 0, 0xFA}, 115 {"EXT11", NULL, 0, 0xFB}, 116 {"EXT12", NULL, 0, 0xFC}, 117 {"EXT13", NULL, 0, 0xFD}, 118 {"EXTLAST", NULL, 0, 0xFE}, 119 }; 120 121 /* Bind the SDIO function and start device registration. */ 122 static int 123 nxpwifi_sdio_probe(struct sdio_func *func, const struct sdio_device_id *id) 124 { 125 int ret; 126 struct sdio_mmc_card *card = NULL; 127 128 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL); 129 if (!card) 130 return -ENOMEM; 131 132 init_completion(&card->fw_done); 133 134 card->func = func; 135 136 if (id->driver_data) { 137 struct nxpwifi_sdio_device *data = (void *)id->driver_data; 138 139 card->firmware = data->firmware; 140 card->firmware_sdiouart = data->firmware_sdiouart; 141 card->reg = data->reg; 142 card->max_ports = data->max_ports; 143 card->mp_agg_pkt_limit = data->mp_agg_pkt_limit; 144 card->tx_buf_size = data->tx_buf_size; 145 card->mp_tx_agg_buf_size = data->mp_tx_agg_buf_size; 146 card->mp_rx_agg_buf_size = data->mp_rx_agg_buf_size; 147 card->can_dump_fw = data->can_dump_fw; 148 card->fw_dump_enh = data->fw_dump_enh; 149 card->can_ext_scan = data->can_ext_scan; 150 INIT_WORK(&card->work, nxpwifi_sdio_work); 151 } 152 153 sdio_claim_host(func); 154 ret = sdio_enable_func(func); 155 sdio_release_host(func); 156 157 if (ret) { 158 dev_err(&func->dev, "failed to enable function\n"); 159 return ret; 160 } 161 162 ret = nxpwifi_add_card(card, &card->fw_done, &sdio_ops, 163 NXPWIFI_SDIO, &func->dev); 164 if (ret) { 165 dev_err(&func->dev, "add card failed\n"); 166 goto err_disable; 167 } 168 169 return 0; 170 171 err_disable: 172 sdio_claim_host(func); 173 sdio_disable_func(func); 174 sdio_release_host(func); 175 176 return ret; 177 } 178 179 /* Resume the SDIO function and cancel host sleep. */ 180 static int nxpwifi_sdio_resume(struct device *dev) 181 { 182 struct sdio_func *func = dev_to_sdio_func(dev); 183 struct sdio_mmc_card *card; 184 struct nxpwifi_adapter *adapter; 185 186 card = sdio_get_drvdata(func); 187 188 if (unlikely(!card || !card->adapter)) { 189 dev_dbg(dev, "resume: %s not ready\n", !card ? "card" : "adapter"); 190 return -ENODEV; 191 } 192 193 adapter = card->adapter; 194 195 if (!test_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags)) 196 return 0; 197 198 clear_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags); 199 200 /* Disable Host Sleep */ 201 nxpwifi_cancel_hs(nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_STA), 202 NXPWIFI_SYNC_CMD); 203 204 return 0; 205 } 206 207 static int 208 nxpwifi_write_reg_locked(struct sdio_func *func, u32 reg, u8 data) 209 { 210 int ret; 211 212 sdio_writeb(func, data, reg, &ret); 213 return ret; 214 } 215 216 static int 217 nxpwifi_write_reg(struct nxpwifi_adapter *adapter, u32 reg, u8 data) 218 { 219 struct sdio_mmc_card *card = adapter->card; 220 int ret; 221 222 sdio_claim_host(card->func); 223 ret = nxpwifi_write_reg_locked(card->func, reg, data); 224 sdio_release_host(card->func); 225 226 return ret; 227 } 228 229 static int 230 nxpwifi_read_reg(struct nxpwifi_adapter *adapter, u32 reg, u8 *data) 231 { 232 struct sdio_mmc_card *card = adapter->card; 233 int ret; 234 u8 val; 235 236 sdio_claim_host(card->func); 237 val = sdio_readb(card->func, reg, &ret); 238 sdio_release_host(card->func); 239 240 *data = val; 241 242 return ret; 243 } 244 245 static int 246 nxpwifi_write_data_sync(struct nxpwifi_adapter *adapter, 247 u8 *buffer, u32 pkt_len, u32 port) 248 { 249 struct sdio_mmc_card *card = adapter->card; 250 int ret; 251 u8 blk_mode = 252 (port & NXPWIFI_SDIO_BYTE_MODE_MASK) ? BYTE_MODE : BLOCK_MODE; 253 u32 blk_size = (blk_mode == BLOCK_MODE) ? NXPWIFI_SDIO_BLOCK_SIZE : 1; 254 u32 blk_cnt = 255 (blk_mode == 256 BLOCK_MODE) ? (pkt_len / 257 NXPWIFI_SDIO_BLOCK_SIZE) : pkt_len; 258 u32 ioport = (port & NXPWIFI_SDIO_IO_PORT_MASK); 259 260 if (test_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags)) { 261 nxpwifi_dbg(adapter, ERROR, 262 "%s: not allowed while suspended\n", __func__); 263 return -EPERM; 264 } 265 266 sdio_claim_host(card->func); 267 268 ret = sdio_writesb(card->func, ioport, buffer, blk_cnt * blk_size); 269 270 sdio_release_host(card->func); 271 272 return ret; 273 } 274 275 static int nxpwifi_read_data_sync(struct nxpwifi_adapter *adapter, u8 *buffer, 276 u32 len, u32 port, u8 claim) 277 { 278 struct sdio_mmc_card *card = adapter->card; 279 int ret; 280 u8 blk_mode = (port & NXPWIFI_SDIO_BYTE_MODE_MASK) ? BYTE_MODE 281 : BLOCK_MODE; 282 u32 blk_size = (blk_mode == BLOCK_MODE) ? NXPWIFI_SDIO_BLOCK_SIZE : 1; 283 u32 blk_cnt = (blk_mode == BLOCK_MODE) ? (len / NXPWIFI_SDIO_BLOCK_SIZE) 284 : len; 285 u32 ioport = (port & NXPWIFI_SDIO_IO_PORT_MASK); 286 287 if (claim) 288 sdio_claim_host(card->func); 289 290 ret = sdio_readsb(card->func, buffer, ioport, blk_cnt * blk_size); 291 292 if (claim) 293 sdio_release_host(card->func); 294 295 return ret; 296 } 297 298 static int 299 nxpwifi_sdio_read_fw_status(struct nxpwifi_adapter *adapter, u16 *dat) 300 { 301 struct sdio_mmc_card *card = adapter->card; 302 const struct nxpwifi_sdio_card_reg *reg = card->reg; 303 u8 fws0, fws1; 304 int ret; 305 306 ret = nxpwifi_read_reg(adapter, reg->status_reg_0, &fws0); 307 if (ret) 308 return ret; 309 310 ret = nxpwifi_read_reg(adapter, reg->status_reg_1, &fws1); 311 if (ret) 312 return ret; 313 314 *dat = (u16)((fws1 << 8) | fws0); 315 return ret; 316 } 317 318 static int nxpwifi_check_fw_status(struct nxpwifi_adapter *adapter, 319 u32 poll_num) 320 { 321 int ret = 0; 322 u16 firmware_stat = 0; 323 324 unsigned int timeout_us = poll_num * 100000; /* 100 ms * poll_num */ 325 /* 326 * Poll every 100 ms until firmware reports FIRMWARE_READY_SDIO. 327 * On timeout, read_poll_timeout() returns -ETIMEDOUT. 328 */ 329 ret = read_poll_timeout(nxpwifi_sdio_read_fw_status, ret, 330 (!ret && firmware_stat == FIRMWARE_READY_SDIO), 331 100000, timeout_us, true, /* sleep */ 332 adapter, &firmware_stat); 333 334 /* FW may appear ready; wait a bit to avoid early races. */ 335 if (firmware_stat == FIRMWARE_READY_SDIO) 336 msleep(100); 337 338 return ret; 339 } 340 341 static int nxpwifi_check_winner_status(struct nxpwifi_adapter *adapter) 342 { 343 int ret; 344 u8 winner = 0; 345 struct sdio_mmc_card *card = adapter->card; 346 347 ret = nxpwifi_read_reg(adapter, card->reg->status_reg_0, &winner); 348 if (ret) 349 return ret; 350 351 if (winner) 352 adapter->winner = 0; 353 else 354 adapter->winner = 1; 355 356 return ret; 357 } 358 359 /* Remove the SDIO function and tear down the adapter. */ 360 static void 361 nxpwifi_sdio_remove(struct sdio_func *func) 362 { 363 struct sdio_mmc_card *card; 364 struct nxpwifi_adapter *adapter; 365 struct nxpwifi_private *priv; 366 int ret = 0; 367 u16 firmware_stat; 368 369 card = sdio_get_drvdata(func); 370 if (!card) 371 return; 372 373 wait_for_completion(&card->fw_done); 374 375 adapter = card->adapter; 376 if (!adapter || !adapter->priv_num) 377 return; 378 379 ret = nxpwifi_sdio_read_fw_status(adapter, &firmware_stat); 380 if (!ret && firmware_stat == FIRMWARE_READY_SDIO) { 381 nxpwifi_deauthenticate_all(adapter); 382 383 priv = nxpwifi_get_priv(adapter, NXPWIFI_BSS_ROLE_ANY); 384 nxpwifi_disable_auto_ds(priv); 385 nxpwifi_init_shutdown_fw(priv, NXPWIFI_FUNC_SHUTDOWN); 386 } 387 388 nxpwifi_remove_card(adapter); 389 } 390 391 /* Suspend the SDIO function while keeping SDIO power. */ 392 static int nxpwifi_sdio_suspend(struct device *dev) 393 { 394 struct sdio_func *func = dev_to_sdio_func(dev); 395 struct sdio_mmc_card *card; 396 struct nxpwifi_adapter *adapter; 397 mmc_pm_flag_t caps; 398 unsigned long flags = 0; 399 int ret = 0; 400 401 caps = sdio_get_host_pm_caps(func); 402 403 if (!(caps & MMC_PM_KEEP_POWER)) { 404 /* host lacks keep-power capability */ 405 dev_warn(dev, "suspend: host does not support MMC_PM_KEEP_POWER\n"); 406 return -EOPNOTSUPP; 407 } 408 409 card = sdio_get_drvdata(func); 410 411 if (!card) { 412 dev_warn(dev, "suspend: card not ready\n"); 413 return -ENODEV; 414 } 415 416 /* Might still be loading firmware */ 417 wait_for_completion(&card->fw_done); 418 419 adapter = card->adapter; 420 if (!adapter) { 421 dev_warn(dev, "suspend: adapter not ready\n"); 422 return -ENODEV; 423 } 424 425 /* Enable the Host Sleep */ 426 if (!nxpwifi_enable_hs(adapter)) { 427 nxpwifi_dbg(adapter, ERROR, "suspend: enable host sleep failed\n"); 428 clear_bit(NXPWIFI_IS_HS_ENABLING, &adapter->work_flags); 429 return -ETIMEDOUT; 430 } 431 432 flags |= MMC_PM_KEEP_POWER; 433 434 if (adapter->wowlan_enabled && (caps & MMC_PM_WAKE_SDIO_IRQ)) 435 flags |= MMC_PM_WAKE_SDIO_IRQ; 436 437 ret = sdio_set_host_pm_flags(func, flags); 438 439 /* Indicate device suspended */ 440 set_bit(NXPWIFI_IS_SUSPENDED, &adapter->work_flags); 441 clear_bit(NXPWIFI_IS_HS_ENABLING, &adapter->work_flags); 442 443 return ret; 444 } 445 446 static void nxpwifi_sdio_coredump(struct device *dev) 447 { 448 struct sdio_func *func = dev_to_sdio_func(dev); 449 struct sdio_mmc_card *card; 450 451 card = sdio_get_drvdata(func); 452 if (!test_and_set_bit(NXPWIFI_IFACE_WORK_DEVICE_DUMP, 453 &card->work_flags)) 454 nxpwifi_queue_work(card->adapter, &card->work); 455 } 456 457 /* WLAN IDs */ 458 static const struct sdio_device_id nxpwifi_ids[] = { 459 {SDIO_DEVICE(SDIO_VENDOR_ID_NXP, SDIO_DEVICE_ID_NXP_IW61X), 460 .driver_data = (unsigned long)&nxpwifi_sdio_iw61x}, 461 {}, 462 }; 463 464 MODULE_DEVICE_TABLE(sdio, nxpwifi_ids); 465 466 static const struct dev_pm_ops nxpwifi_sdio_pm_ops = { 467 .suspend = nxpwifi_sdio_suspend, 468 .resume = nxpwifi_sdio_resume, 469 }; 470 471 static struct sdio_driver nxpwifi_sdio = { 472 .name = "nxpwifi_sdio", 473 .id_table = nxpwifi_ids, 474 .probe = nxpwifi_sdio_probe, 475 .remove = nxpwifi_sdio_remove, 476 .drv = { 477 .coredump = nxpwifi_sdio_coredump, 478 .pm = &nxpwifi_sdio_pm_ops, 479 } 480 }; 481 482 static int nxpwifi_pm_wakeup_card(struct nxpwifi_adapter *adapter) 483 { 484 nxpwifi_dbg(adapter, EVENT, "event: wakeup device...\n"); 485 486 return nxpwifi_write_reg(adapter, CONFIGURATION_REG, HOST_POWER_UP); 487 } 488 489 static int nxpwifi_pm_wakeup_card_complete(struct nxpwifi_adapter *adapter) 490 { 491 nxpwifi_dbg(adapter, EVENT, "cmd: wakeup device completed\n"); 492 493 return nxpwifi_write_reg(adapter, CONFIGURATION_REG, 0); 494 } 495 496 /* SDIO wrapper for firmware download (claims host). */ 497 static int nxpwifi_sdio_dnld_fw(struct nxpwifi_adapter *adapter, 498 struct nxpwifi_fw_image *fw) 499 { 500 struct sdio_mmc_card *card = adapter->card; 501 int ret; 502 503 sdio_claim_host(card->func); 504 ret = nxpwifi_dnld_fw(adapter, fw); 505 sdio_release_host(card->func); 506 507 return ret; 508 } 509 510 static int nxpwifi_init_sdio_new_mode(struct nxpwifi_adapter *adapter) 511 { 512 u8 reg; 513 struct sdio_mmc_card *card = adapter->card; 514 int ret; 515 516 adapter->ioport = MEM_PORT; 517 518 /* enable sdio new mode */ 519 ret = nxpwifi_read_reg(adapter, card->reg->card_cfg_2_1_reg, ®); 520 if (ret) 521 return ret; 522 ret = nxpwifi_write_reg(adapter, card->reg->card_cfg_2_1_reg, 523 reg | CMD53_NEW_MODE); 524 if (ret) 525 return ret; 526 527 /* Configure cmd port and enable reading rx length from the register */ 528 ret = nxpwifi_read_reg(adapter, card->reg->cmd_cfg_0, ®); 529 if (ret) 530 return ret; 531 ret = nxpwifi_write_reg(adapter, card->reg->cmd_cfg_0, 532 reg | CMD_PORT_RD_LEN_EN); 533 if (ret) 534 return ret; 535 536 /* 537 * Enable Dnld/Upld ready auto reset for cmd port after cmd53 is 538 * completed 539 */ 540 ret = nxpwifi_read_reg(adapter, card->reg->cmd_cfg_1, ®); 541 if (ret) 542 return ret; 543 ret = nxpwifi_write_reg(adapter, card->reg->cmd_cfg_1, 544 reg | CMD_PORT_AUTO_EN); 545 546 return ret; 547 } 548 549 /* Initialize SDIO IO ports and host-int behavior. */ 550 static int nxpwifi_init_sdio_ioport(struct nxpwifi_adapter *adapter) 551 { 552 u8 reg; 553 struct sdio_mmc_card *card = adapter->card; 554 int ret; 555 556 ret = nxpwifi_init_sdio_new_mode(adapter); 557 if (ret) 558 return ret; 559 560 /* Set Host interrupt reset to read to clear */ 561 ret = nxpwifi_read_reg(adapter, card->reg->host_int_rsr_reg, ®); 562 if (ret) 563 return ret; 564 ret = nxpwifi_write_reg(adapter, card->reg->host_int_rsr_reg, 565 reg | card->reg->sdio_int_mask); 566 if (ret) 567 return ret; 568 569 /* Dnld/Upld ready set to auto reset */ 570 ret = nxpwifi_read_reg(adapter, card->reg->card_misc_cfg_reg, ®); 571 if (ret) 572 return ret; 573 ret = nxpwifi_write_reg(adapter, card->reg->card_misc_cfg_reg, 574 reg | AUTO_RE_ENABLE_INT); 575 576 return ret; 577 } 578 579 static int nxpwifi_write_data_to_card(struct nxpwifi_adapter *adapter, 580 u8 *payload, u32 pkt_len, u32 port) 581 { 582 u32 i = 0; 583 int ret; 584 585 do { 586 ret = nxpwifi_write_data_sync(adapter, payload, pkt_len, port); 587 if (ret) { 588 i++; 589 nxpwifi_dbg(adapter, ERROR, "host_to_card, write iomem\t" 590 "(%d) failed: %d\n", i, ret); 591 if (nxpwifi_write_reg(adapter, CONFIGURATION_REG, 0x04)) 592 nxpwifi_dbg(adapter, ERROR, "write CFG reg failed\n"); 593 594 if (i > MAX_WRITE_IOMEM_RETRY) 595 return ret; 596 } 597 } while (ret); 598 599 return ret; 600 } 601 602 static int nxpwifi_get_rd_port(struct nxpwifi_adapter *adapter, u8 *port) 603 { 604 struct sdio_mmc_card *card = adapter->card; 605 const struct nxpwifi_sdio_card_reg *reg = card->reg; 606 u32 rd_bitmap = card->mp_rd_bitmap; 607 608 if (!(rd_bitmap & reg->data_port_mask)) 609 return -EINVAL; 610 611 if (!(card->mp_rd_bitmap & (1 << card->curr_rd_port))) 612 return -EINVAL; 613 614 /* We are now handling the SDIO data ports */ 615 card->mp_rd_bitmap &= (u32)(~(1 << card->curr_rd_port)); 616 *port = card->curr_rd_port; 617 618 if (++card->curr_rd_port == card->max_ports) 619 card->curr_rd_port = reg->start_rd_port; 620 621 return 0; 622 } 623 624 static int nxpwifi_get_wr_port_data(struct nxpwifi_adapter *adapter, u32 *port) 625 { 626 struct sdio_mmc_card *card = adapter->card; 627 const struct nxpwifi_sdio_card_reg *reg = card->reg; 628 u32 wr_bitmap = card->mp_wr_bitmap; 629 630 if (!(wr_bitmap & card->mp_data_port_mask)) { 631 adapter->data_sent = true; 632 return -EBUSY; 633 } 634 635 if (card->mp_wr_bitmap & (1 << card->curr_wr_port)) { 636 card->mp_wr_bitmap &= (u32)(~(1 << card->curr_wr_port)); 637 *port = card->curr_wr_port; 638 if (++card->curr_wr_port == card->mp_end_port) 639 card->curr_wr_port = reg->start_wr_port; 640 } else { 641 adapter->data_sent = true; 642 return -EBUSY; 643 } 644 645 return 0; 646 } 647 648 static int 649 nxpwifi_sdio_poll_card_status(struct nxpwifi_adapter *adapter, u8 bits) 650 { 651 struct sdio_mmc_card *card = adapter->card; 652 u32 tries; 653 u8 cs; 654 int ret; 655 656 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 657 ret = nxpwifi_read_reg(adapter, card->reg->poll_reg, &cs); 658 if (ret) 659 break; 660 else if ((cs & bits) == bits) 661 return 0; 662 663 usleep_range(10, 20); 664 } 665 666 nxpwifi_dbg(adapter, ERROR, "poll card status failed, tries = %d\n", tries); 667 668 return ret; 669 } 670 671 /* Disable SDIO host interrupt and release IRQ. */ 672 static void nxpwifi_sdio_disable_host_int(struct nxpwifi_adapter *adapter) 673 { 674 struct sdio_mmc_card *card = adapter->card; 675 struct sdio_func *func = card->func; 676 677 sdio_claim_host(func); 678 nxpwifi_write_reg_locked(func, card->reg->host_int_mask_reg, 0); 679 sdio_release_irq(func); 680 sdio_release_host(func); 681 } 682 683 static void nxpwifi_interrupt_status(struct nxpwifi_adapter *adapter) 684 { 685 struct sdio_mmc_card *card = adapter->card; 686 u8 sdio_ireg; 687 unsigned long flags; 688 689 if (nxpwifi_read_data_sync(adapter, card->mp_regs, 690 card->reg->max_mp_regs, 691 REG_PORT | NXPWIFI_SDIO_BYTE_MODE_MASK, 0)) { 692 nxpwifi_dbg(adapter, ERROR, "read mp_regs failed\n"); 693 return; 694 } 695 696 sdio_ireg = card->mp_regs[card->reg->host_int_status_reg]; 697 if (sdio_ireg) { 698 nxpwifi_dbg(adapter, INTR, "intr: sdio_ireg = %#x\n", sdio_ireg); 699 spin_lock_irqsave(&adapter->int_lock, flags); 700 adapter->int_status |= sdio_ireg; 701 spin_unlock_irqrestore(&adapter->int_lock, flags); 702 } 703 } 704 705 /* SDIO IRQ handler: snapshot status and schedule main work. */ 706 static void 707 nxpwifi_sdio_interrupt(struct sdio_func *func) 708 { 709 struct nxpwifi_adapter *adapter; 710 struct sdio_mmc_card *card; 711 712 card = sdio_get_drvdata(func); 713 714 if (!card || !card->adapter) { 715 /* device-scoped error logging (rate-limited to avoid flood) */ 716 dev_err_ratelimited(&func->dev, "interrupt: missing card/adapter\n"); 717 return; 718 } 719 720 adapter = card->adapter; 721 722 if (!adapter->pps_uapsd_mode && adapter->ps_state == PS_STATE_SLEEP) 723 adapter->ps_state = PS_STATE_AWAKE; 724 725 nxpwifi_interrupt_status(adapter); 726 nxpwifi_queue_work(adapter, &adapter->main_work); 727 } 728 729 /* Enable SDIO host interrupt and claim IRQ. */ 730 static int nxpwifi_sdio_enable_host_int(struct nxpwifi_adapter *adapter) 731 { 732 struct sdio_mmc_card *card = adapter->card; 733 struct sdio_func *func = card->func; 734 int ret; 735 736 sdio_claim_host(func); 737 738 /* Request the SDIO IRQ */ 739 ret = sdio_claim_irq(func, nxpwifi_sdio_interrupt); 740 if (ret) { 741 nxpwifi_dbg(adapter, ERROR, "claim irq failed: ret=%d\n", ret); 742 goto done; 743 } 744 745 /* Simply write the mask to the register */ 746 ret = nxpwifi_write_reg_locked(func, card->reg->host_int_mask_reg, 747 card->reg->host_int_enable); 748 if (ret) { 749 nxpwifi_dbg(adapter, ERROR, "enable host interrupt failed\n"); 750 sdio_release_irq(func); 751 } 752 753 done: 754 sdio_release_host(func); 755 return ret; 756 } 757 758 static int nxpwifi_sdio_card_to_host(struct nxpwifi_adapter *adapter, 759 u32 *type, u8 *buffer, 760 u32 npayload, u32 ioport) 761 { 762 int ret; 763 u32 nb; 764 765 if (!buffer) 766 return -EINVAL; 767 768 ret = nxpwifi_read_data_sync(adapter, buffer, npayload, ioport, 1); 769 770 if (ret) { 771 nxpwifi_dbg(adapter, ERROR, 772 "read iomem failed (ioport=%#x, len=%u): %d", 773 ioport, npayload, ret); 774 775 return ret; 776 } 777 778 nb = get_unaligned_le16((buffer)); 779 if (nb > npayload) { 780 nxpwifi_dbg(adapter, ERROR, 781 "invalid packet len: nb=%u > npayload=%u (ioport=%#x)", 782 nb, npayload, ioport); 783 return -EINVAL; 784 } 785 786 *type = get_unaligned_le16((buffer + 2)); 787 788 return ret; 789 } 790 791 /* Download firmware using the helper protocol. */ 792 static int nxpwifi_prog_fw_w_helper(struct nxpwifi_adapter *adapter, 793 struct nxpwifi_fw_image *fw) 794 { 795 struct sdio_mmc_card *card = adapter->card; 796 const struct nxpwifi_sdio_card_reg *reg = card->reg; 797 int ret; 798 u8 *firmware = fw->fw_buf; 799 u32 firmware_len = fw->fw_len; 800 u32 offset = 0; 801 u8 base0, base1; 802 u8 *fwbuf; 803 u16 len = 0; 804 u32 txlen, tx_blocks = 0, tries; 805 u32 i = 0; 806 807 if (!firmware_len) { 808 nxpwifi_dbg(adapter, ERROR, 809 "firmware image not found! Terminating download\n"); 810 return -EINVAL; 811 } 812 813 /* Assume that the allocated buffer is 8-byte aligned */ 814 fwbuf = kzalloc(NXPWIFI_UPLD_SIZE, GFP_KERNEL); 815 if (!fwbuf) 816 return -ENOMEM; 817 818 sdio_claim_host(card->func); 819 820 /* Perform firmware data transfer */ 821 do { 822 /* 823 * The host polls for the DN_LD_CARD_RDY and CARD_IO_READY 824 * bits 825 */ 826 ret = nxpwifi_sdio_poll_card_status(adapter, CARD_IO_READY | 827 DN_LD_CARD_RDY); 828 if (ret) { 829 nxpwifi_dbg(adapter, ERROR, 830 "FW download with helper:\t" 831 "poll status timeout @ %d\n", offset); 832 goto done; 833 } 834 835 /* More data? */ 836 if (offset >= firmware_len) 837 break; 838 839 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 840 ret = nxpwifi_read_reg(adapter, reg->base_0_reg, 841 &base0); 842 if (ret) { 843 nxpwifi_dbg(adapter, ERROR, 844 "dev BASE0 register read failed:\t" 845 "base0=%#04X(%d). Terminating dnld\n", 846 base0, base0); 847 goto done; 848 } 849 ret = nxpwifi_read_reg(adapter, reg->base_1_reg, 850 &base1); 851 if (ret) { 852 nxpwifi_dbg(adapter, ERROR, 853 "dev BASE1 register read failed:\t" 854 "base1=%#04X(%d). Terminating dnld\n", 855 base1, base1); 856 goto done; 857 } 858 len = (u16)(((base1 & 0xff) << 8) | (base0 & 0xff)); 859 860 if (len) 861 break; 862 863 usleep_range(10, 20); 864 } 865 866 if (!len) { 867 break; 868 } else if (len > NXPWIFI_UPLD_SIZE) { 869 nxpwifi_dbg(adapter, ERROR, 870 "FW dnld failed @ %d, invalid length %d\n", 871 offset, len); 872 ret = -EINVAL; 873 goto done; 874 } 875 876 txlen = len; 877 878 if (len & BIT(0)) { 879 i++; 880 if (i > MAX_WRITE_IOMEM_RETRY) { 881 nxpwifi_dbg(adapter, ERROR, 882 "FW dnld failed @ %d, over max retry\n", 883 offset); 884 ret = -EIO; 885 goto done; 886 } 887 nxpwifi_dbg(adapter, ERROR, 888 "CRC indicated by the helper:\t" 889 "len = 0x%04X, txlen = %d\n", len, txlen); 890 len &= ~BIT(0); 891 /* Setting this to 0 to resend from same offset */ 892 txlen = 0; 893 } else { 894 i = 0; 895 896 /* 897 * Set blocksize to transfer - checking for last 898 * block 899 */ 900 if (firmware_len - offset < txlen) 901 txlen = firmware_len - offset; 902 903 tx_blocks = (txlen + NXPWIFI_SDIO_BLOCK_SIZE - 1) 904 / NXPWIFI_SDIO_BLOCK_SIZE; 905 906 /* Copy payload to buffer */ 907 memcpy(fwbuf, &firmware[offset], txlen); 908 } 909 910 ret = nxpwifi_write_data_sync(adapter, fwbuf, tx_blocks * 911 NXPWIFI_SDIO_BLOCK_SIZE, 912 adapter->ioport); 913 if (ret) { 914 nxpwifi_dbg(adapter, ERROR, 915 "FW download, write iomem (%d) failed @ %d\n", 916 i, offset); 917 if (nxpwifi_write_reg(adapter, CONFIGURATION_REG, 0x04)) 918 nxpwifi_dbg(adapter, ERROR, "write CFG reg failed\n"); 919 920 goto done; 921 } 922 923 offset += txlen; 924 } while (true); 925 926 nxpwifi_dbg(adapter, MSG, "FW download complete (%u bytes)\n", offset); 927 928 ret = 0; 929 done: 930 sdio_release_host(card->func); 931 kfree(fwbuf); 932 return ret; 933 } 934 935 /* Deaggregate an SDIO RX aggregation packet. */ 936 static void nxpwifi_deaggr_sdio_pkt(struct nxpwifi_adapter *adapter, 937 struct sk_buff *skb) 938 { 939 u32 total_pkt_len, pkt_len; 940 struct sk_buff *skb_deaggr; 941 u16 blk_size; 942 u8 blk_num; 943 u8 *data; 944 945 data = skb->data; 946 total_pkt_len = skb->len; 947 948 while (total_pkt_len >= (SDIO_HEADER_OFFSET + adapter->intf_hdr_len)) { 949 if (total_pkt_len < adapter->sdio_rx_block_size) 950 break; 951 blk_num = *(data + BLOCK_NUMBER_OFFSET); 952 blk_size = adapter->sdio_rx_block_size * blk_num; 953 if (blk_size > total_pkt_len) { 954 nxpwifi_dbg(adapter, ERROR, 955 "%s: error in blk_size,\t" 956 "blk_num=%d, blk_size=%d, total_pkt_len=%d\n", 957 __func__, blk_num, blk_size, total_pkt_len); 958 break; 959 } 960 pkt_len = get_unaligned_le16((data + 961 SDIO_HEADER_OFFSET)); 962 if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) { 963 nxpwifi_dbg(adapter, ERROR, 964 "%s: error in pkt_len,\t" 965 "pkt_len=%d, blk_size=%d\n", 966 __func__, pkt_len, blk_size); 967 break; 968 } 969 970 skb_deaggr = nxpwifi_alloc_dma_align_buf(pkt_len, GFP_KERNEL); 971 if (!skb_deaggr) 972 break; 973 skb_put(skb_deaggr, pkt_len); 974 memcpy(skb_deaggr->data, data + SDIO_HEADER_OFFSET, pkt_len); 975 skb_pull(skb_deaggr, adapter->intf_hdr_len); 976 977 nxpwifi_handle_rx_packet(adapter, skb_deaggr); 978 data += blk_size; 979 total_pkt_len -= blk_size; 980 } 981 } 982 983 static void nxpwifi_decode_rx_packet(struct nxpwifi_adapter *adapter, 984 struct sk_buff *skb, u32 upld_typ) 985 { 986 u8 *cmd_buf; 987 u16 pkt_len; 988 struct nxpwifi_rxinfo *rx_info; 989 990 pkt_len = get_unaligned_le16(skb->data); 991 992 if (upld_typ != NXPWIFI_TYPE_AGGR_DATA) { 993 skb_trim(skb, pkt_len); 994 skb_pull(skb, adapter->intf_hdr_len); 995 } 996 997 switch (upld_typ) { 998 case NXPWIFI_TYPE_AGGR_DATA: 999 nxpwifi_dbg(adapter, DATA, 1000 "Rx Aggr Data packet\n"); 1001 rx_info = NXPWIFI_SKB_RXCB(skb); 1002 rx_info->buf_type = NXPWIFI_TYPE_AGGR_DATA; 1003 if (adapter->rx_work_enabled) { 1004 skb_queue_tail(&adapter->rx_data_q, skb); 1005 atomic_inc(&adapter->rx_pending); 1006 adapter->data_received = true; 1007 } else { 1008 /* Deaggregate an SDIO RX aggregation packet. */ 1009 nxpwifi_deaggr_sdio_pkt(adapter, skb); 1010 dev_kfree_skb_any(skb); 1011 } 1012 break; 1013 1014 case NXPWIFI_TYPE_DATA: 1015 nxpwifi_dbg(adapter, DATA, "Rx Data packet\n"); 1016 if (adapter->rx_work_enabled) { 1017 skb_queue_tail(&adapter->rx_data_q, skb); 1018 adapter->data_received = true; 1019 atomic_inc(&adapter->rx_pending); 1020 } else { 1021 nxpwifi_handle_rx_packet(adapter, skb); 1022 } 1023 break; 1024 1025 case NXPWIFI_TYPE_CMD: 1026 nxpwifi_dbg(adapter, CMD, "Rx Cmd Response\n"); 1027 /* take care of curr_cmd = NULL case */ 1028 if (!adapter->curr_cmd) { 1029 cmd_buf = adapter->upld_buf; 1030 1031 if (adapter->ps_state == PS_STATE_SLEEP_CFM) 1032 nxpwifi_process_sleep_confirm_resp(adapter, 1033 skb->data, 1034 skb->len); 1035 1036 memcpy(cmd_buf, skb->data, 1037 min_t(u32, NXPWIFI_SIZE_OF_CMD_BUFFER, 1038 skb->len)); 1039 1040 dev_kfree_skb_any(skb); 1041 } else { 1042 adapter->cmd_resp_received = true; 1043 adapter->curr_cmd->resp_skb = skb; 1044 } 1045 break; 1046 1047 case NXPWIFI_TYPE_EVENT: 1048 nxpwifi_dbg(adapter, EVENT, "Rx Event\n"); 1049 adapter->event_cause = get_unaligned_le32(skb->data); 1050 1051 if (skb->len > NXPWIFI_EVENT_HEADER_LEN) { 1052 u32 body_len = min_t(u32, skb->len - NXPWIFI_EVENT_HEADER_LEN, 1053 MAX_EVENT_SIZE); 1054 memcpy(adapter->event_body, skb->data + NXPWIFI_EVENT_HEADER_LEN, 1055 body_len); 1056 } 1057 1058 /* event cause has been saved to adapter->event_cause */ 1059 adapter->event_received = true; 1060 adapter->event_skb = skb; 1061 1062 break; 1063 1064 default: 1065 nxpwifi_dbg(adapter, ERROR, "unknown upload type %#x\n", upld_typ); 1066 dev_kfree_skb_any(skb); 1067 break; 1068 } 1069 } 1070 1071 /* Receive path with SDIO multi-port aggregation. */ 1072 static int nxpwifi_sdio_card_to_host_mp_aggr(struct nxpwifi_adapter *adapter, 1073 u16 rx_len, u8 port) 1074 { 1075 struct sdio_mmc_card *card = adapter->card; 1076 s32 f_do_rx_aggr = 0; 1077 s32 f_do_rx_cur = 0; 1078 s32 f_aggr_cur = 0; 1079 s32 f_post_aggr_cur = 0; 1080 struct sk_buff *skb_deaggr; 1081 struct sk_buff *skb = NULL; 1082 u32 pkt_len, pkt_type, mport, pind; 1083 u8 *curr_ptr; 1084 int ret = 0; 1085 1086 if (!card->mpa_rx.enabled) { 1087 nxpwifi_dbg(adapter, WARN, "rx aggregation disabled\n"); 1088 f_do_rx_cur = 1; 1089 goto rx_curr_single; 1090 } 1091 1092 if (card->mp_rd_bitmap & card->reg->data_port_mask) { 1093 /* Some more data RX pending */ 1094 1095 if (MP_RX_AGGR_IN_PROGRESS(card)) { 1096 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) { 1097 f_aggr_cur = 1; 1098 } else { 1099 /* No room in Aggr buf, do rx aggr now */ 1100 f_do_rx_aggr = 1; 1101 f_post_aggr_cur = 1; 1102 } 1103 } else { 1104 /* Rx aggr not in progress */ 1105 f_aggr_cur = 1; 1106 } 1107 1108 } else { 1109 /* No more data RX pending */ 1110 1111 if (MP_RX_AGGR_IN_PROGRESS(card)) { 1112 f_do_rx_aggr = 1; 1113 if (MP_RX_AGGR_BUF_HAS_ROOM(card, rx_len)) 1114 f_aggr_cur = 1; 1115 else 1116 /* No room in Aggr buf, do rx aggr now */ 1117 f_do_rx_cur = 1; 1118 } else { 1119 f_do_rx_cur = 1; 1120 } 1121 } 1122 1123 if (f_aggr_cur) { 1124 /* Curr pkt can be aggregated */ 1125 mp_rx_aggr_setup(card, rx_len, port); 1126 1127 if (MP_RX_AGGR_PKT_LIMIT_REACHED(card) || 1128 mp_rx_aggr_port_limit_reached(card)) { 1129 /* No more pkts allowed in Aggr buf, rx it */ 1130 f_do_rx_aggr = 1; 1131 } 1132 } 1133 1134 if (f_do_rx_aggr) { 1135 u32 port_count; 1136 int i; 1137 1138 /* do aggr RX now */ 1139 for (i = 0, port_count = 0; i < card->max_ports; i++) 1140 if (card->mpa_rx.ports & BIT(i)) 1141 port_count++; 1142 1143 /* 1144 * Reading data from "start_port + 0" to "start_port + 1145 * port_count -1", so decrease the count by 1 1146 */ 1147 port_count--; 1148 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | 1149 (port_count << 8)) + card->mpa_rx.start_port; 1150 1151 if (card->mpa_rx.pkt_cnt == 1) 1152 mport = adapter->ioport + card->mpa_rx.start_port; 1153 1154 ret = nxpwifi_read_data_sync(adapter, card->mpa_rx.buf, 1155 card->mpa_rx.buf_len, mport, 1); 1156 if (ret) 1157 goto error; 1158 1159 curr_ptr = card->mpa_rx.buf; 1160 1161 for (pind = 0; pind < card->mpa_rx.pkt_cnt; pind++) { 1162 u32 *len_arr = card->mpa_rx.len_arr; 1163 1164 /* get curr PKT len & type */ 1165 pkt_len = get_unaligned_le16(&curr_ptr[0]); 1166 pkt_type = get_unaligned_le16(&curr_ptr[2]); 1167 1168 /* copy pkt to deaggr buf */ 1169 skb_deaggr = nxpwifi_alloc_dma_align_buf(len_arr[pind], 1170 GFP_KERNEL); 1171 if (!skb_deaggr) { 1172 nxpwifi_dbg(adapter, ERROR, "skb allocation failure\t" 1173 "drop pkt len=%d type=%d\n", 1174 pkt_len, pkt_type); 1175 curr_ptr += len_arr[pind]; 1176 continue; 1177 } 1178 1179 skb_put(skb_deaggr, len_arr[pind]); 1180 1181 if ((pkt_type == NXPWIFI_TYPE_DATA || 1182 (pkt_type == NXPWIFI_TYPE_AGGR_DATA && 1183 adapter->sdio_rx_aggr_enable)) && 1184 pkt_len <= len_arr[pind]) { 1185 memcpy(skb_deaggr->data, curr_ptr, pkt_len); 1186 1187 skb_trim(skb_deaggr, pkt_len); 1188 1189 nxpwifi_decode_rx_packet(adapter, skb_deaggr, 1190 pkt_type); 1191 } else { 1192 nxpwifi_dbg(adapter, ERROR, 1193 "drop wrong aggr pkt:\t" 1194 "sdio_single_port_rx_aggr=%d\t" 1195 "type=%d len=%d max_len=%d\n", 1196 adapter->sdio_rx_aggr_enable, 1197 pkt_type, pkt_len, len_arr[pind]); 1198 dev_kfree_skb_any(skb_deaggr); 1199 } 1200 curr_ptr += len_arr[pind]; 1201 } 1202 MP_RX_AGGR_BUF_RESET(card); 1203 } 1204 1205 rx_curr_single: 1206 if (f_do_rx_cur) { 1207 skb = nxpwifi_alloc_dma_align_buf(rx_len, GFP_KERNEL); 1208 if (!skb) { 1209 nxpwifi_dbg(adapter, ERROR, 1210 "single skb allocated fail,\t" 1211 "drop pkt port=%d len=%d\n", port, rx_len); 1212 ret = nxpwifi_sdio_card_to_host(adapter, &pkt_type, 1213 card->mpa_rx.buf, 1214 rx_len, 1215 adapter->ioport + port); 1216 if (ret) 1217 goto error; 1218 return 0; 1219 } 1220 1221 skb_put(skb, rx_len); 1222 1223 ret = nxpwifi_sdio_card_to_host(adapter, &pkt_type, 1224 skb->data, skb->len, 1225 adapter->ioport + port); 1226 if (ret) 1227 goto error; 1228 if (!adapter->sdio_rx_aggr_enable && 1229 pkt_type == NXPWIFI_TYPE_AGGR_DATA) { 1230 nxpwifi_dbg(adapter, ERROR, "drop wrong pkt type %d\t" 1231 "current SDIO RX Aggr not enabled\n", 1232 pkt_type); 1233 dev_kfree_skb_any(skb); 1234 return 0; 1235 } 1236 1237 nxpwifi_decode_rx_packet(adapter, skb, pkt_type); 1238 } 1239 if (f_post_aggr_cur) /* Curr pkt can be aggregated */ 1240 mp_rx_aggr_setup(card, rx_len, port); 1241 1242 return 0; 1243 error: 1244 if (MP_RX_AGGR_IN_PROGRESS(card)) 1245 MP_RX_AGGR_BUF_RESET(card); 1246 1247 if (f_do_rx_cur && skb) /* Single transfer pending. Free curr buff also */ 1248 dev_kfree_skb_any(skb); 1249 1250 return ret; 1251 } 1252 1253 static int nxpwifi_process_int_status(struct nxpwifi_adapter *adapter, u8 sdio_ireg) 1254 { 1255 struct sdio_mmc_card *card = adapter->card; 1256 const struct nxpwifi_sdio_card_reg *reg = card->reg; 1257 int ret = 0; 1258 struct sk_buff *skb; 1259 u8 port; 1260 u32 len_reg_l, len_reg_u; 1261 u32 rx_blocks; 1262 u16 rx_len; 1263 u32 bitmap; 1264 u8 cr; 1265 1266 if (!sdio_ireg) 1267 return ret; 1268 1269 if (sdio_ireg & DN_LD_CMD_PORT_HOST_INT_STATUS && adapter->cmd_sent) 1270 adapter->cmd_sent = false; 1271 1272 if (sdio_ireg & UP_LD_CMD_PORT_HOST_INT_STATUS) { 1273 u32 pkt_type; 1274 1275 /* read the len of control packet */ 1276 rx_len = card->mp_regs[reg->cmd_rd_len_1] << 8; 1277 rx_len |= (u16)card->mp_regs[reg->cmd_rd_len_0]; 1278 rx_blocks = DIV_ROUND_UP(rx_len, NXPWIFI_SDIO_BLOCK_SIZE); 1279 if (rx_len <= adapter->intf_hdr_len || 1280 (rx_blocks * NXPWIFI_SDIO_BLOCK_SIZE) > 1281 NXPWIFI_RX_DATA_BUF_SIZE) 1282 return -EINVAL; 1283 rx_len = (u16)(rx_blocks * NXPWIFI_SDIO_BLOCK_SIZE); 1284 1285 skb = nxpwifi_alloc_dma_align_buf(rx_len, GFP_KERNEL); 1286 if (!skb) 1287 return -ENOMEM; 1288 1289 skb_put(skb, rx_len); 1290 1291 ret = nxpwifi_sdio_card_to_host(adapter, &pkt_type, skb->data, 1292 skb->len, adapter->ioport | 1293 CMD_PORT_SLCT); 1294 if (ret) { 1295 nxpwifi_dbg(adapter, ERROR, "failed to card_to_host"); 1296 dev_kfree_skb_any(skb); 1297 goto term_cmd; 1298 } 1299 1300 if (pkt_type != NXPWIFI_TYPE_CMD && 1301 pkt_type != NXPWIFI_TYPE_EVENT) 1302 nxpwifi_dbg(adapter, ERROR, "Received wrong packet on cmd port"); 1303 1304 nxpwifi_decode_rx_packet(adapter, skb, pkt_type); 1305 } 1306 1307 if (sdio_ireg & DN_LD_HOST_INT_STATUS) { 1308 bitmap = (u32)card->mp_regs[reg->wr_bitmap_l]; 1309 bitmap |= ((u32)card->mp_regs[reg->wr_bitmap_u]) << 8; 1310 bitmap |= ((u32)card->mp_regs[reg->wr_bitmap_1l]) << 16; 1311 bitmap |= ((u32)card->mp_regs[reg->wr_bitmap_1u]) << 24; 1312 card->mp_wr_bitmap = bitmap; 1313 1314 nxpwifi_dbg(adapter, INTR, "intr: wr_bitmap=0x%x\n", card->mp_wr_bitmap); 1315 if (adapter->data_sent && 1316 (card->mp_wr_bitmap & card->mp_data_port_mask)) { 1317 nxpwifi_dbg(adapter, INTR, "Tx DONE\n"); 1318 adapter->data_sent = false; 1319 } 1320 } 1321 1322 nxpwifi_dbg(adapter, INTR, "cmd_sent=%d data_sent=%d\n", 1323 adapter->cmd_sent, adapter->data_sent); 1324 if (sdio_ireg & UP_LD_HOST_INT_STATUS) { 1325 bitmap = (u32)card->mp_regs[reg->rd_bitmap_l]; 1326 bitmap |= ((u32)card->mp_regs[reg->rd_bitmap_u]) << 8; 1327 bitmap |= ((u32)card->mp_regs[reg->rd_bitmap_1l]) << 16; 1328 bitmap |= ((u32)card->mp_regs[reg->rd_bitmap_1u]) << 24; 1329 card->mp_rd_bitmap = bitmap; 1330 nxpwifi_dbg(adapter, INTR, "intr: rd_bitmap=0x%x\n", card->mp_rd_bitmap); 1331 1332 while (true) { 1333 ret = nxpwifi_get_rd_port(adapter, &port); 1334 1335 if (ret) 1336 break; 1337 1338 len_reg_l = reg->rd_len_p0_l + (port << 1); 1339 len_reg_u = reg->rd_len_p0_u + (port << 1); 1340 rx_len = ((u16)card->mp_regs[len_reg_u]) << 8; 1341 rx_len |= (u16)card->mp_regs[len_reg_l]; 1342 rx_blocks = 1343 (rx_len + NXPWIFI_SDIO_BLOCK_SIZE - 1344 1) / NXPWIFI_SDIO_BLOCK_SIZE; 1345 if (rx_len <= adapter->intf_hdr_len || 1346 (card->mpa_rx.enabled && 1347 ((rx_blocks * NXPWIFI_SDIO_BLOCK_SIZE) > 1348 card->mpa_rx.buf_size))) { 1349 nxpwifi_dbg(adapter, ERROR, "invalid rx_len=%d\n", rx_len); 1350 ret = -EINVAL; 1351 goto term_cmd; 1352 } 1353 1354 rx_len = (u16)(rx_blocks * NXPWIFI_SDIO_BLOCK_SIZE); 1355 1356 ret = nxpwifi_sdio_card_to_host_mp_aggr(adapter, rx_len, 1357 port); 1358 if (ret) { 1359 nxpwifi_dbg(adapter, ERROR, 1360 "card_to_host_mpa failed: int status=%#x\n", 1361 sdio_ireg); 1362 goto term_cmd; 1363 } 1364 } 1365 } 1366 1367 return 0; 1368 1369 term_cmd: 1370 /* terminate cmd */ 1371 if (nxpwifi_read_reg(adapter, CONFIGURATION_REG, &cr)) 1372 nxpwifi_dbg(adapter, ERROR, "read CFG reg failed\n"); 1373 else 1374 nxpwifi_dbg(adapter, INFO, "info: CFG reg val = %d\n", cr); 1375 1376 if (nxpwifi_write_reg(adapter, CONFIGURATION_REG, (cr | 0x04))) 1377 nxpwifi_dbg(adapter, ERROR, "write CFG reg failed\n"); 1378 else 1379 nxpwifi_dbg(adapter, INFO, "info: write success\n"); 1380 1381 if (nxpwifi_read_reg(adapter, CONFIGURATION_REG, &cr)) 1382 nxpwifi_dbg(adapter, ERROR, "read CFG reg failed\n"); 1383 else 1384 nxpwifi_dbg(adapter, INFO, "info: CFG reg val =%x\n", cr); 1385 1386 return ret; 1387 } 1388 1389 /* Transmit using SDIO multi-port aggregation. */ 1390 static int nxpwifi_host_to_card_mp_aggr(struct nxpwifi_adapter *adapter, 1391 u8 *payload, u32 pkt_len, u32 port, 1392 u32 next_pkt_len) 1393 { 1394 struct sdio_mmc_card *card = adapter->card; 1395 int ret = 0; 1396 s32 f_send_aggr_buf = 0; 1397 s32 f_send_cur_buf = 0; 1398 s32 f_precopy_cur_buf = 0; 1399 s32 f_postcopy_cur_buf = 0; 1400 u32 mport; 1401 int index; 1402 1403 if (!card->mpa_tx.enabled || port == CMD_PORT_SLCT) { 1404 nxpwifi_dbg(adapter, WARN, "tx aggregation disabled\n"); 1405 f_send_cur_buf = 1; 1406 goto tx_curr_single; 1407 } 1408 1409 if (next_pkt_len) { 1410 /* More pkt in TX queue */ 1411 1412 if (MP_TX_AGGR_IN_PROGRESS(card)) { 1413 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) { 1414 f_precopy_cur_buf = 1; 1415 1416 if (!(card->mp_wr_bitmap & 1417 (1 << card->curr_wr_port)) || 1418 !MP_TX_AGGR_BUF_HAS_ROOM 1419 (card, pkt_len + next_pkt_len)) 1420 f_send_aggr_buf = 1; 1421 } else { 1422 /* No room in Aggr buf, send it */ 1423 f_send_aggr_buf = 1; 1424 1425 if (!(card->mp_wr_bitmap & 1426 (1 << card->curr_wr_port))) 1427 f_send_cur_buf = 1; 1428 else 1429 f_postcopy_cur_buf = 1; 1430 } 1431 } else { 1432 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len) && 1433 (card->mp_wr_bitmap & (1 << card->curr_wr_port))) 1434 f_precopy_cur_buf = 1; 1435 else 1436 f_send_cur_buf = 1; 1437 } 1438 } else { 1439 /* Last pkt in TX queue */ 1440 1441 if (MP_TX_AGGR_IN_PROGRESS(card)) { 1442 /* some packs in Aggr buf already */ 1443 f_send_aggr_buf = 1; 1444 1445 if (MP_TX_AGGR_BUF_HAS_ROOM(card, pkt_len)) 1446 f_precopy_cur_buf = 1; 1447 else 1448 /* No room in Aggr buf, send it */ 1449 f_send_cur_buf = 1; 1450 } else { 1451 f_send_cur_buf = 1; 1452 } 1453 } 1454 1455 if (f_precopy_cur_buf) { 1456 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); 1457 1458 if (MP_TX_AGGR_PKT_LIMIT_REACHED(card) || 1459 mp_tx_aggr_port_limit_reached(card)) 1460 /* No more pkts allowed in Aggr buf, send it */ 1461 f_send_aggr_buf = 1; 1462 } 1463 1464 if (f_send_aggr_buf) { 1465 u32 port_count; 1466 int i; 1467 1468 for (i = 0, port_count = 0; i < card->max_ports; i++) 1469 if (card->mpa_tx.ports & BIT(i)) 1470 port_count++; 1471 1472 /* 1473 * Writing data from "start_port + 0" to "start_port + 1474 * port_count -1", so decrease the count by 1 1475 */ 1476 port_count--; 1477 mport = (adapter->ioport | SDIO_MPA_ADDR_BASE | 1478 (port_count << 8)) + card->mpa_tx.start_port; 1479 1480 if (card->mpa_tx.pkt_cnt == 1) 1481 mport = adapter->ioport + card->mpa_tx.start_port; 1482 1483 ret = nxpwifi_write_data_to_card(adapter, card->mpa_tx.buf, 1484 card->mpa_tx.buf_len, mport); 1485 1486 /* Save the last multi port tx aggregation info to debug log */ 1487 index = adapter->dbg.last_sdio_mp_index; 1488 index = (index + 1) % NXPWIFI_DBG_SDIO_MP_NUM; 1489 adapter->dbg.last_sdio_mp_index = index; 1490 adapter->dbg.last_mp_wr_ports[index] = mport; 1491 adapter->dbg.last_mp_wr_bitmap[index] = card->mp_wr_bitmap; 1492 adapter->dbg.last_mp_wr_len[index] = card->mpa_tx.buf_len; 1493 adapter->dbg.last_mp_curr_wr_port[index] = card->curr_wr_port; 1494 1495 MP_TX_AGGR_BUF_RESET(card); 1496 } 1497 1498 tx_curr_single: 1499 if (f_send_cur_buf) 1500 ret = nxpwifi_write_data_to_card(adapter, payload, pkt_len, 1501 adapter->ioport + port); 1502 1503 if (f_postcopy_cur_buf) 1504 MP_TX_AGGR_BUF_PUT(card, payload, pkt_len, port); 1505 1506 return ret; 1507 } 1508 1509 static int nxpwifi_sdio_host_to_card(struct nxpwifi_adapter *adapter, 1510 u8 type, struct sk_buff *skb, 1511 struct nxpwifi_tx_param *tx_param) 1512 { 1513 struct sdio_mmc_card *card = adapter->card; 1514 int ret; 1515 u32 buf_block_len; 1516 u32 blk_size; 1517 u32 port; 1518 u8 *payload = (u8 *)skb->data; 1519 u32 pkt_len = skb->len; 1520 1521 /* Allocate buffer and copy payload */ 1522 blk_size = NXPWIFI_SDIO_BLOCK_SIZE; 1523 buf_block_len = (pkt_len + blk_size - 1) / blk_size; 1524 put_unaligned_le16((u16)pkt_len, payload + 0); 1525 put_unaligned_le16((u16)type, payload + 2); 1526 1527 /* 1528 * This is SDIO specific header 1529 * u16 length, 1530 * u16 type (NXPWIFI_TYPE_DATA = 0, NXPWIFI_TYPE_CMD = 1, 1531 * NXPWIFI_TYPE_EVENT = 3) 1532 */ 1533 if (type == NXPWIFI_TYPE_DATA) { 1534 ret = nxpwifi_get_wr_port_data(adapter, &port); 1535 if (ret) { 1536 nxpwifi_dbg(adapter, ERROR, "no wr_port available\n"); 1537 return ret; 1538 } 1539 } else { 1540 adapter->cmd_sent = true; 1541 1542 if (pkt_len <= adapter->intf_hdr_len || 1543 pkt_len > NXPWIFI_UPLD_SIZE) { 1544 nxpwifi_dbg(adapter, ERROR, 1545 "invalid upld pkt_len=%u (hdr_len=%u, max=%u)\n", 1546 pkt_len, adapter->intf_hdr_len, NXPWIFI_UPLD_SIZE); 1547 return -EINVAL; 1548 } 1549 1550 port = CMD_PORT_SLCT; 1551 } 1552 1553 /* Transfer data to card */ 1554 pkt_len = buf_block_len * blk_size; 1555 1556 if (tx_param) 1557 ret = nxpwifi_host_to_card_mp_aggr(adapter, payload, pkt_len, 1558 port, tx_param->next_pkt_len 1559 ); 1560 else 1561 ret = nxpwifi_host_to_card_mp_aggr(adapter, payload, pkt_len, 1562 port, 0); 1563 1564 if (ret) { 1565 if (type == NXPWIFI_TYPE_CMD || 1566 type == NXPWIFI_TYPE_VDLL) 1567 adapter->cmd_sent = false; 1568 if (type == NXPWIFI_TYPE_DATA) { 1569 adapter->data_sent = false; 1570 /* restore curr_wr_port in error cases */ 1571 card->curr_wr_port = port; 1572 card->mp_wr_bitmap |= (u32)(1 << card->curr_wr_port); 1573 } 1574 } else { 1575 if (type == NXPWIFI_TYPE_DATA) { 1576 if (!(card->mp_wr_bitmap & (1 << card->curr_wr_port))) 1577 adapter->data_sent = true; 1578 else 1579 adapter->data_sent = false; 1580 } 1581 } 1582 1583 return ret; 1584 } 1585 1586 static int nxpwifi_alloc_sdio_mpa_buffers(struct nxpwifi_adapter *adapter, 1587 u32 mpa_tx_buf_size, 1588 u32 mpa_rx_buf_size) 1589 { 1590 struct sdio_mmc_card *card = adapter->card; 1591 u32 rx_buf_size; 1592 int ret = 0; 1593 1594 card->mpa_tx.buf = kzalloc(mpa_tx_buf_size, GFP_KERNEL); 1595 if (!card->mpa_tx.buf) { 1596 ret = -ENOMEM; 1597 goto error; 1598 } 1599 1600 card->mpa_tx.buf_size = mpa_tx_buf_size; 1601 1602 rx_buf_size = max_t(u32, mpa_rx_buf_size, 1603 (u32)SDIO_MAX_AGGR_BUF_SIZE); 1604 card->mpa_rx.buf = kzalloc(rx_buf_size, GFP_KERNEL); 1605 if (!card->mpa_rx.buf) { 1606 ret = -ENOMEM; 1607 goto error; 1608 } 1609 1610 card->mpa_rx.buf_size = rx_buf_size; 1611 1612 error: 1613 if (ret) { 1614 kfree(card->mpa_tx.buf); 1615 kfree(card->mpa_rx.buf); 1616 card->mpa_tx.buf_size = 0; 1617 card->mpa_rx.buf_size = 0; 1618 card->mpa_tx.buf = NULL; 1619 card->mpa_rx.buf = NULL; 1620 } 1621 1622 return ret; 1623 } 1624 1625 static void 1626 nxpwifi_unregister_dev(struct nxpwifi_adapter *adapter) 1627 { 1628 struct sdio_mmc_card *card = adapter->card; 1629 1630 if (adapter->card) { 1631 card->adapter = NULL; 1632 sdio_claim_host(card->func); 1633 sdio_disable_func(card->func); 1634 sdio_release_host(card->func); 1635 } 1636 } 1637 1638 static int nxpwifi_register_dev(struct nxpwifi_adapter *adapter) 1639 { 1640 int ret; 1641 struct sdio_mmc_card *card = adapter->card; 1642 struct sdio_func *func = card->func; 1643 const char *firmware = card->firmware; 1644 1645 /* save adapter pointer in card */ 1646 card->adapter = adapter; 1647 adapter->tx_buf_size = card->tx_buf_size; 1648 1649 sdio_claim_host(func); 1650 1651 /* Set block size */ 1652 ret = sdio_set_block_size(card->func, NXPWIFI_SDIO_BLOCK_SIZE); 1653 sdio_release_host(func); 1654 if (ret) { 1655 nxpwifi_dbg(adapter, ERROR, "cannot set SDIO block size\n"); 1656 return ret; 1657 } 1658 1659 /* 1660 * Select correct firmware (sdsd or sdiouart) firmware based on the strapping 1661 * option 1662 */ 1663 if (card->firmware_sdiouart) { 1664 u8 val; 1665 1666 nxpwifi_read_reg(adapter, card->reg->host_strap_reg, &val); 1667 if ((val & card->reg->host_strap_mask) == card->reg->host_strap_value) 1668 firmware = card->firmware_sdiouart; 1669 } 1670 strscpy(adapter->fw_name, firmware, sizeof(adapter->fw_name)); 1671 1672 if (card->fw_dump_enh) { 1673 adapter->mem_type_mapping_tbl = generic_mem_type_map; 1674 adapter->num_mem_types = 1; 1675 } else { 1676 adapter->mem_type_mapping_tbl = mem_type_mapping_tbl; 1677 adapter->num_mem_types = ARRAY_SIZE(mem_type_mapping_tbl); 1678 } 1679 1680 return 0; 1681 } 1682 1683 static int nxpwifi_init_sdio(struct nxpwifi_adapter *adapter) 1684 { 1685 struct sdio_mmc_card *card = adapter->card; 1686 const struct nxpwifi_sdio_card_reg *reg = card->reg; 1687 int ret; 1688 u8 sdio_ireg; 1689 1690 sdio_set_drvdata(card->func, card); 1691 1692 /* 1693 * Read the host_int_status_reg for ACK the first interrupt got 1694 * from the bootloader. If we don't do this we get a interrupt 1695 * as soon as we register the irq. 1696 */ 1697 nxpwifi_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); 1698 1699 /* Get SDIO ioport */ 1700 if (nxpwifi_init_sdio_ioport(adapter)) 1701 return -EIO; 1702 1703 /* Initialize SDIO variables in card */ 1704 card->mp_rd_bitmap = 0; 1705 card->mp_wr_bitmap = 0; 1706 card->curr_rd_port = reg->start_rd_port; 1707 card->curr_wr_port = reg->start_wr_port; 1708 1709 card->mp_data_port_mask = reg->data_port_mask; 1710 1711 card->mpa_tx.buf_len = 0; 1712 card->mpa_tx.pkt_cnt = 0; 1713 card->mpa_tx.start_port = 0; 1714 1715 card->mpa_tx.enabled = 1; 1716 card->mpa_tx.pkt_aggr_limit = card->mp_agg_pkt_limit; 1717 1718 card->mpa_rx.buf_len = 0; 1719 card->mpa_rx.pkt_cnt = 0; 1720 card->mpa_rx.start_port = 0; 1721 1722 card->mpa_rx.enabled = 1; 1723 card->mpa_rx.pkt_aggr_limit = card->mp_agg_pkt_limit; 1724 1725 /* Allocate buffers for SDIO MP-A */ 1726 card->mp_regs = devm_kzalloc(&card->func->dev, reg->max_mp_regs, GFP_KERNEL); 1727 1728 if (!card->mp_regs) 1729 return -ENOMEM; 1730 1731 card->mpa_rx.len_arr = 1732 devm_kcalloc(&card->func->dev, card->mp_agg_pkt_limit, 1733 sizeof(*card->mpa_rx.len_arr), GFP_KERNEL); 1734 1735 if (!card->mpa_rx.len_arr) 1736 return -ENOMEM; 1737 1738 ret = nxpwifi_alloc_sdio_mpa_buffers(adapter, 1739 card->mp_tx_agg_buf_size, 1740 card->mp_rx_agg_buf_size); 1741 1742 /* Allocate 32k MPA Tx/Rx buffers if 64k memory allocation fails */ 1743 if (ret && (card->mp_tx_agg_buf_size == NXPWIFI_MP_AGGR_BSIZE_MAX || 1744 card->mp_rx_agg_buf_size == NXPWIFI_MP_AGGR_BSIZE_MAX)) { 1745 /* Disable rx single port aggregation */ 1746 adapter->host_disable_sdio_rx_aggr = true; 1747 1748 ret = nxpwifi_alloc_sdio_mpa_buffers(adapter, 1749 NXPWIFI_MP_AGGR_BSIZE_32K, 1750 NXPWIFI_MP_AGGR_BSIZE_32K); 1751 if (ret) { 1752 /* Disable multi port aggregation */ 1753 card->mpa_tx.enabled = 0; 1754 card->mpa_rx.enabled = 0; 1755 } 1756 } 1757 1758 adapter->ext_scan = card->can_ext_scan; 1759 return ret; 1760 } 1761 1762 static void nxpwifi_cleanup_mpa_buf(struct nxpwifi_adapter *adapter) 1763 { 1764 struct sdio_mmc_card *card = adapter->card; 1765 1766 MP_TX_AGGR_BUF_RESET(card); 1767 MP_RX_AGGR_BUF_RESET(card); 1768 } 1769 1770 static void nxpwifi_cleanup_sdio(struct nxpwifi_adapter *adapter) 1771 { 1772 struct sdio_mmc_card *card = adapter->card; 1773 1774 cancel_work_sync(&card->work); 1775 1776 kfree(card->mpa_tx.buf); 1777 kfree(card->mpa_rx.buf); 1778 } 1779 1780 static void 1781 nxpwifi_update_mp_end_port(struct nxpwifi_adapter *adapter, u16 port) 1782 { 1783 struct sdio_mmc_card *card = adapter->card; 1784 const struct nxpwifi_sdio_card_reg *reg = card->reg; 1785 int i; 1786 1787 card->mp_end_port = port; 1788 1789 card->mp_data_port_mask = reg->data_port_mask; 1790 1791 if (reg->start_wr_port) { 1792 for (i = 1; i <= card->max_ports - card->mp_end_port; i++) 1793 card->mp_data_port_mask &= 1794 ~(1 << (card->max_ports - i)); 1795 } 1796 1797 card->curr_wr_port = reg->start_wr_port; 1798 } 1799 1800 /* Perform an SDIO card reset in workqueue context. */ 1801 static void nxpwifi_sdio_card_reset_work(struct nxpwifi_adapter *adapter) 1802 { 1803 struct sdio_mmc_card *card = adapter->card; 1804 struct sdio_func *func = card->func; 1805 int ret; 1806 1807 /* Prepare the adapter for the reset. */ 1808 nxpwifi_shutdown_sw(adapter); 1809 clear_bit(NXPWIFI_IFACE_WORK_DEVICE_DUMP, &card->work_flags); 1810 clear_bit(NXPWIFI_IFACE_WORK_CARD_RESET, &card->work_flags); 1811 1812 /* Run a HW reset of the SDIO interface. */ 1813 sdio_claim_host(func); 1814 ret = mmc_hw_reset(func->card); 1815 sdio_release_host(func); 1816 1817 switch (ret) { 1818 case 1: 1819 nxpwifi_dbg(adapter, MSG, "SDIO HW reset asynchronous\n"); 1820 complete_all(adapter->fw_done); 1821 break; 1822 case 0: 1823 ret = nxpwifi_reinit_sw(adapter); 1824 if (ret) 1825 dev_err(&func->dev, "reinit failed: %d\n", ret); 1826 break; 1827 default: 1828 dev_err(&func->dev, "SDIO HW reset failed: %d\n", ret); 1829 break; 1830 } 1831 } 1832 1833 static enum 1834 rdwr_status nxpwifi_sdio_rdwr_firmware(struct nxpwifi_adapter *adapter, 1835 u8 doneflag) 1836 { 1837 struct sdio_mmc_card *card = adapter->card; 1838 int ret, tries; 1839 u8 ctrl_data = 0; 1840 1841 sdio_writeb(card->func, card->reg->fw_dump_host_ready, 1842 card->reg->fw_dump_ctrl, &ret); 1843 if (ret) { 1844 nxpwifi_dbg(adapter, ERROR, "SDIO Write ERR\n"); 1845 return RDWR_STATUS_FAILURE; 1846 } 1847 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 1848 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl, 1849 &ret); 1850 if (ret) { 1851 nxpwifi_dbg(adapter, ERROR, "SDIO read err\n"); 1852 return RDWR_STATUS_FAILURE; 1853 } 1854 if (ctrl_data == FW_DUMP_DONE) 1855 break; 1856 if (doneflag && ctrl_data == doneflag) 1857 return RDWR_STATUS_DONE; 1858 if (ctrl_data != card->reg->fw_dump_host_ready) { 1859 nxpwifi_dbg(adapter, WARN, 1860 "The ctrl reg was changed, re-try again\n"); 1861 sdio_writeb(card->func, card->reg->fw_dump_host_ready, 1862 card->reg->fw_dump_ctrl, &ret); 1863 if (ret) { 1864 nxpwifi_dbg(adapter, ERROR, "SDIO write err\n"); 1865 return RDWR_STATUS_FAILURE; 1866 } 1867 } 1868 usleep_range(100, 200); 1869 } 1870 if (ctrl_data == card->reg->fw_dump_host_ready) { 1871 nxpwifi_dbg(adapter, ERROR, "Fail to pull ctrl_data\n"); 1872 return RDWR_STATUS_FAILURE; 1873 } 1874 1875 return RDWR_STATUS_SUCCESS; 1876 } 1877 1878 /* Dump firmware memories for post-mortem analysis. */ 1879 static void nxpwifi_sdio_fw_dump(struct nxpwifi_adapter *adapter) 1880 { 1881 struct sdio_mmc_card *card = adapter->card; 1882 int ret = 0; 1883 unsigned int reg, reg_start, reg_end; 1884 u8 *dbg_ptr, *end_ptr, dump_num, idx, i, read_reg, doneflag = 0; 1885 enum rdwr_status stat; 1886 u32 memory_size; 1887 1888 if (!card->can_dump_fw) 1889 return; 1890 1891 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) { 1892 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 1893 1894 if (entry->mem_ptr) { 1895 vfree(entry->mem_ptr); 1896 entry->mem_ptr = NULL; 1897 } 1898 entry->mem_size = 0; 1899 } 1900 1901 nxpwifi_pm_wakeup_card(adapter); 1902 sdio_claim_host(card->func); 1903 1904 nxpwifi_dbg(adapter, MSG, "== nxpwifi firmware dump start ==\n"); 1905 1906 stat = nxpwifi_sdio_rdwr_firmware(adapter, doneflag); 1907 if (stat == RDWR_STATUS_FAILURE) 1908 goto done; 1909 1910 reg = card->reg->fw_dump_start; 1911 /* Read the number of the memories which will dump */ 1912 dump_num = sdio_readb(card->func, reg, &ret); 1913 if (ret) { 1914 nxpwifi_dbg(adapter, ERROR, "SDIO read memory length err\n"); 1915 goto done; 1916 } 1917 1918 /* Read the length of every memory which will dump */ 1919 for (idx = 0; idx < dump_num; idx++) { 1920 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx]; 1921 1922 stat = nxpwifi_sdio_rdwr_firmware(adapter, doneflag); 1923 if (stat == RDWR_STATUS_FAILURE) 1924 goto done; 1925 1926 memory_size = 0; 1927 reg = card->reg->fw_dump_start; 1928 for (i = 0; i < 4; i++) { 1929 read_reg = sdio_readb(card->func, reg, &ret); 1930 if (ret) { 1931 nxpwifi_dbg(adapter, ERROR, "SDIO read err\n"); 1932 goto done; 1933 } 1934 memory_size |= (read_reg << i * 8); 1935 reg++; 1936 } 1937 1938 if (memory_size == 0) { 1939 nxpwifi_dbg(adapter, DUMP, "Firmware dump Finished!\n"); 1940 ret = nxpwifi_write_reg(adapter, 1941 card->reg->fw_dump_ctrl, 1942 FW_DUMP_READ_DONE); 1943 if (ret) { 1944 nxpwifi_dbg(adapter, ERROR, "SDIO write err\n"); 1945 return; 1946 } 1947 break; 1948 } 1949 1950 nxpwifi_dbg(adapter, DUMP, 1951 "%s_SIZE=0x%x\n", entry->mem_name, memory_size); 1952 entry->mem_ptr = vmalloc(memory_size + 1); 1953 entry->mem_size = memory_size; 1954 if (!entry->mem_ptr) 1955 goto done; 1956 dbg_ptr = entry->mem_ptr; 1957 end_ptr = dbg_ptr + memory_size; 1958 1959 doneflag = entry->done_flag; 1960 nxpwifi_dbg(adapter, DUMP, "Start %s output, please wait...\n", 1961 entry->mem_name); 1962 1963 do { 1964 stat = nxpwifi_sdio_rdwr_firmware(adapter, doneflag); 1965 if (stat == RDWR_STATUS_FAILURE) 1966 goto done; 1967 1968 reg_start = card->reg->fw_dump_start; 1969 reg_end = card->reg->fw_dump_end; 1970 for (reg = reg_start; reg <= reg_end; reg++) { 1971 *dbg_ptr = sdio_readb(card->func, reg, &ret); 1972 if (ret) { 1973 nxpwifi_dbg(adapter, ERROR, "SDIO read err\n"); 1974 goto done; 1975 } 1976 if (dbg_ptr < end_ptr) 1977 dbg_ptr++; 1978 else 1979 nxpwifi_dbg(adapter, ERROR, "Allocated buf not enough\n"); 1980 } 1981 1982 if (stat != RDWR_STATUS_DONE) 1983 continue; 1984 1985 nxpwifi_dbg(adapter, DUMP, "%s done: size=0x%tx\n", 1986 entry->mem_name, dbg_ptr - entry->mem_ptr); 1987 break; 1988 } while (1); 1989 } 1990 nxpwifi_dbg(adapter, MSG, "== nxpwifi firmware dump end ==\n"); 1991 1992 done: 1993 sdio_release_host(card->func); 1994 } 1995 1996 /* Generic firmware dump flow for enhanced devices. */ 1997 static void nxpwifi_sdio_generic_fw_dump(struct nxpwifi_adapter *adapter) 1998 { 1999 struct sdio_mmc_card *card = adapter->card; 2000 struct memory_type_mapping *entry = &generic_mem_type_map[0]; 2001 unsigned int reg, reg_start, reg_end; 2002 u8 start_flag = 0, done_flag = 0; 2003 u8 *dbg_ptr, *end_ptr; 2004 enum rdwr_status stat; 2005 int ret = -EPERM, tries; 2006 2007 if (!card->fw_dump_enh) 2008 return; 2009 2010 if (entry->mem_ptr) { 2011 vfree(entry->mem_ptr); 2012 entry->mem_ptr = NULL; 2013 } 2014 entry->mem_size = 0; 2015 2016 nxpwifi_pm_wakeup_card(adapter); 2017 sdio_claim_host(card->func); 2018 2019 nxpwifi_dbg(adapter, MSG, "== nxpwifi firmware dump start ==\n"); 2020 2021 stat = nxpwifi_sdio_rdwr_firmware(adapter, done_flag); 2022 if (stat == RDWR_STATUS_FAILURE) 2023 goto done; 2024 2025 reg_start = card->reg->fw_dump_start; 2026 reg_end = card->reg->fw_dump_end; 2027 for (reg = reg_start; reg <= reg_end; reg++) { 2028 for (tries = 0; tries < MAX_POLL_TRIES; tries++) { 2029 start_flag = sdio_readb(card->func, reg, &ret); 2030 if (ret) { 2031 nxpwifi_dbg(adapter, ERROR, "SDIO read err\n"); 2032 goto done; 2033 } 2034 if (start_flag == 0) 2035 break; 2036 if (tries == MAX_POLL_TRIES) { 2037 nxpwifi_dbg(adapter, ERROR, "FW not ready to dump\n"); 2038 ret = -EPERM; 2039 goto done; 2040 } 2041 } 2042 usleep_range(100, 200); 2043 } 2044 2045 entry->mem_ptr = vmalloc(0xf0000 + 1); 2046 if (!entry->mem_ptr) { 2047 ret = -ENOMEM; 2048 goto done; 2049 } 2050 dbg_ptr = entry->mem_ptr; 2051 entry->mem_size = 0xf0000; 2052 end_ptr = dbg_ptr + entry->mem_size; 2053 2054 done_flag = entry->done_flag; 2055 nxpwifi_dbg(adapter, DUMP, 2056 "Start %s output, please wait...\n", entry->mem_name); 2057 2058 while (true) { 2059 stat = nxpwifi_sdio_rdwr_firmware(adapter, done_flag); 2060 if (stat == RDWR_STATUS_FAILURE) 2061 goto done; 2062 for (reg = reg_start; reg <= reg_end; reg++) { 2063 *dbg_ptr = sdio_readb(card->func, reg, &ret); 2064 if (ret) { 2065 nxpwifi_dbg(adapter, ERROR, "SDIO read err\n"); 2066 goto done; 2067 } 2068 dbg_ptr++; 2069 if (dbg_ptr >= end_ptr) { 2070 u8 *tmp_ptr; 2071 2072 tmp_ptr = vmalloc(entry->mem_size + 0x4000 + 1); 2073 if (!tmp_ptr) 2074 goto done; 2075 2076 memcpy(tmp_ptr, entry->mem_ptr, 2077 entry->mem_size); 2078 vfree(entry->mem_ptr); 2079 entry->mem_ptr = tmp_ptr; 2080 tmp_ptr = NULL; 2081 dbg_ptr = entry->mem_ptr + entry->mem_size; 2082 entry->mem_size += 0x4000; 2083 end_ptr = entry->mem_ptr + entry->mem_size; 2084 } 2085 } 2086 if (stat == RDWR_STATUS_DONE) { 2087 entry->mem_size = dbg_ptr - entry->mem_ptr; 2088 nxpwifi_dbg(adapter, DUMP, "dump %s done size=0x%x\n", 2089 entry->mem_name, entry->mem_size); 2090 ret = 0; 2091 break; 2092 } 2093 } 2094 nxpwifi_dbg(adapter, MSG, "== nxpwifi firmware dump end ==\n"); 2095 2096 done: 2097 if (ret) { 2098 nxpwifi_dbg(adapter, ERROR, "firmware dump failed\n"); 2099 if (entry->mem_ptr) { 2100 vfree(entry->mem_ptr); 2101 entry->mem_ptr = NULL; 2102 } 2103 entry->mem_size = 0; 2104 } 2105 sdio_release_host(card->func); 2106 } 2107 2108 /* Build and upload consolidated device dump. */ 2109 static void nxpwifi_sdio_device_dump_work(struct nxpwifi_adapter *adapter) 2110 { 2111 struct sdio_mmc_card *card = adapter->card; 2112 2113 adapter->devdump_data = vzalloc(NXPWIFI_FW_DUMP_SIZE); 2114 if (!adapter->devdump_data) 2115 return; 2116 2117 nxpwifi_drv_info_dump(adapter); 2118 2119 /* Generic firmware dump flow for enhanced devices. */ 2120 if (card->fw_dump_enh) 2121 nxpwifi_sdio_generic_fw_dump(adapter); 2122 /* Dump firmware memories for post-mortem analysis. */ 2123 else 2124 nxpwifi_sdio_fw_dump(adapter); 2125 2126 nxpwifi_prepare_fw_dump_info(adapter); 2127 nxpwifi_upload_device_dump(adapter); 2128 } 2129 2130 /* Process deferred SDIO work items. */ 2131 static void nxpwifi_sdio_work(struct work_struct *work) 2132 { 2133 struct sdio_mmc_card *card = 2134 container_of(work, struct sdio_mmc_card, work); 2135 2136 /* Build and upload consolidated device dump. */ 2137 if (test_and_clear_bit(NXPWIFI_IFACE_WORK_DEVICE_DUMP, 2138 &card->work_flags)) 2139 nxpwifi_sdio_device_dump_work(card->adapter); 2140 2141 /* Perform an SDIO card reset in workqueue context. */ 2142 if (test_and_clear_bit(NXPWIFI_IFACE_WORK_CARD_RESET, 2143 &card->work_flags)) 2144 nxpwifi_sdio_card_reset_work(card->adapter); 2145 } 2146 2147 /* Schedule SDIO card reset. */ 2148 static void nxpwifi_sdio_card_reset(struct nxpwifi_adapter *adapter) 2149 { 2150 struct sdio_mmc_card *card = adapter->card; 2151 2152 if (!test_and_set_bit(NXPWIFI_IFACE_WORK_CARD_RESET, &card->work_flags)) 2153 nxpwifi_queue_work(adapter, &card->work); 2154 } 2155 2156 static void nxpwifi_sdio_device_dump(struct nxpwifi_adapter *adapter) 2157 { 2158 struct sdio_mmc_card *card = adapter->card; 2159 2160 if (!test_and_set_bit(NXPWIFI_IFACE_WORK_DEVICE_DUMP, 2161 &card->work_flags)) 2162 nxpwifi_queue_work(adapter, &card->work); 2163 } 2164 2165 /* Dump SDIO function and scratch registers into drv_buf. */ 2166 static int 2167 nxpwifi_sdio_reg_dump(struct nxpwifi_adapter *adapter, char *drv_buf) 2168 { 2169 char *p = drv_buf; 2170 struct sdio_mmc_card *cardp = adapter->card; 2171 int ret = 0; 2172 u8 count, func, data, index = 0, size = 0; 2173 u8 reg, reg_start, reg_end; 2174 char buf[256], *ptr; 2175 2176 if (!p) 2177 return 0; 2178 2179 nxpwifi_dbg(adapter, MSG, "SDIO register dump start\n"); 2180 2181 nxpwifi_pm_wakeup_card(adapter); 2182 2183 sdio_claim_host(cardp->func); 2184 2185 for (count = 0; count < 5; count++) { 2186 memset(buf, 0, sizeof(buf)); 2187 ptr = buf; 2188 2189 switch (count) { 2190 case 0: 2191 /* Read the registers of SDIO function0 */ 2192 func = count; 2193 reg_start = 0; 2194 reg_end = 9; 2195 break; 2196 case 1: 2197 /* Read the registers of SDIO function1 */ 2198 func = count; 2199 reg_start = cardp->reg->func1_dump_reg_start; 2200 reg_end = cardp->reg->func1_dump_reg_end; 2201 break; 2202 case 2: 2203 index = 0; 2204 func = 1; 2205 reg_start = cardp->reg->func1_spec_reg_table[index++]; 2206 size = cardp->reg->func1_spec_reg_num; 2207 reg_end = cardp->reg->func1_spec_reg_table[size - 1]; 2208 break; 2209 default: 2210 /* Read the scratch registers of SDIO function1 */ 2211 if (count == 4) 2212 msleep(100); 2213 func = 1; 2214 reg_start = cardp->reg->func1_scratch_reg; 2215 reg_end = reg_start + NXPWIFI_SDIO_SCRATCH_SIZE; 2216 } 2217 2218 if (count != 2) 2219 ptr += scnprintf(ptr, sizeof(buf) - (ptr - buf), 2220 "SDIO Func%d (%#x-%#x): ", func, reg_start, 2221 reg_end); 2222 else 2223 ptr += scnprintf(ptr, sizeof(buf) - (ptr - buf), 2224 "SDIO Func%d: ", func); 2225 2226 for (reg = reg_start; reg <= reg_end;) { 2227 if (func == 0) 2228 data = sdio_f0_readb(cardp->func, reg, &ret); 2229 else 2230 data = sdio_readb(cardp->func, reg, &ret); 2231 2232 if (count == 2) 2233 ptr += scnprintf(ptr, sizeof(buf) - (ptr - buf), "(%#x) ", reg); 2234 if (!ret) { 2235 ptr += scnprintf(ptr, sizeof(buf) - (ptr - buf), "%02x ", data); 2236 } else { 2237 ptr += scnprintf(ptr, sizeof(buf) - (ptr - buf), "ERR"); 2238 break; 2239 } 2240 2241 if (count == 2 && reg < reg_end) 2242 reg = cardp->reg->func1_spec_reg_table[index++]; 2243 else 2244 reg++; 2245 } 2246 2247 nxpwifi_dbg(adapter, MSG, "%s\n", buf); 2248 p += sprintf(p, "%s\n", buf); 2249 } 2250 2251 sdio_release_host(cardp->func); 2252 2253 nxpwifi_dbg(adapter, MSG, "SDIO register dump end\n"); 2254 2255 return p - drv_buf; 2256 } 2257 2258 static void nxpwifi_sdio_up_dev(struct nxpwifi_adapter *adapter) 2259 { 2260 struct sdio_mmc_card *card = adapter->card; 2261 u8 sdio_ireg; 2262 int ret = 0; 2263 2264 sdio_claim_host(card->func); 2265 ret = sdio_enable_func(card->func); 2266 2267 if (ret) 2268 nxpwifi_dbg(adapter, ERROR, "sdio_enable_func failed: %d\n", ret); 2269 2270 ret = sdio_set_block_size(card->func, NXPWIFI_SDIO_BLOCK_SIZE); 2271 2272 if (ret) 2273 nxpwifi_dbg(adapter, ERROR, "sdio_set_block_size failed: %d\n", ret); 2274 2275 sdio_release_host(card->func); 2276 2277 /* 2278 * tx_buf_size might be changed to 3584 by firmware during 2279 * data transfer, we will reset to default size. 2280 */ 2281 adapter->tx_buf_size = card->tx_buf_size; 2282 2283 /* 2284 * Read the host_int_status_reg for ACK the first interrupt got 2285 * from the bootloader. If we don't do this we get a interrupt 2286 * as soon as we register the irq. 2287 */ 2288 nxpwifi_read_reg(adapter, card->reg->host_int_status_reg, &sdio_ireg); 2289 2290 if (nxpwifi_init_sdio_ioport(adapter)) 2291 nxpwifi_dbg(adapter, ERROR, "error enabling SDIO port\n"); 2292 } 2293 2294 static struct nxpwifi_if_ops sdio_ops = { 2295 .init_if = nxpwifi_init_sdio, 2296 .cleanup_if = nxpwifi_cleanup_sdio, 2297 .check_fw_status = nxpwifi_check_fw_status, 2298 .check_winner_status = nxpwifi_check_winner_status, 2299 .prog_fw = nxpwifi_prog_fw_w_helper, 2300 .register_dev = nxpwifi_register_dev, 2301 .unregister_dev = nxpwifi_unregister_dev, 2302 .enable_int = nxpwifi_sdio_enable_host_int, 2303 .disable_int = nxpwifi_sdio_disable_host_int, 2304 .process_int_status = nxpwifi_process_int_status, 2305 .host_to_card = nxpwifi_sdio_host_to_card, 2306 .wakeup = nxpwifi_pm_wakeup_card, 2307 .wakeup_complete = nxpwifi_pm_wakeup_card_complete, 2308 2309 /* SDIO specific */ 2310 .update_mp_end_port = nxpwifi_update_mp_end_port, 2311 .cleanup_mpa_buf = nxpwifi_cleanup_mpa_buf, 2312 .cmdrsp_complete = nxpwifi_sdio_cmdrsp_complete, 2313 .event_complete = nxpwifi_sdio_event_complete, 2314 .dnld_fw = nxpwifi_sdio_dnld_fw, 2315 .card_reset = nxpwifi_sdio_card_reset, 2316 .reg_dump = nxpwifi_sdio_reg_dump, 2317 .device_dump = nxpwifi_sdio_device_dump, 2318 .deaggr_pkt = nxpwifi_deaggr_sdio_pkt, 2319 .up_dev = nxpwifi_sdio_up_dev, 2320 }; 2321 2322 module_sdio_driver(nxpwifi_sdio); 2323 2324 MODULE_AUTHOR("NXP International Ltd."); 2325 MODULE_DESCRIPTION("NXP WiFi SDIO Driver version " SDIO_VERSION); 2326 MODULE_VERSION(SDIO_VERSION); 2327 MODULE_LICENSE("GPL"); 2328 MODULE_FIRMWARE(IW61X_SDIO_FW_NAME); 2329