1 /* 2 * Copyright (c) 2014 Redpine Signals Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 * 16 */ 17 18 #include <linux/module.h> 19 #include "rsi_sdio.h" 20 #include "rsi_common.h" 21 #include "rsi_coex.h" 22 #include "rsi_hal.h" 23 24 /* Default operating mode is wlan STA + BT */ 25 static u16 dev_oper_mode = DEV_OPMODE_STA_BT_DUAL; 26 module_param(dev_oper_mode, ushort, 0444); 27 MODULE_PARM_DESC(dev_oper_mode, DEV_OPMODE_PARAM_DESC); 28 29 /** 30 * rsi_sdio_set_cmd52_arg() - This function prepares cmd 52 read/write arg. 31 * @rw: Read/write 32 * @func: function number 33 * @raw: indicates whether to perform read after write 34 * @address: address to which to read/write 35 * @writedata: data to write 36 * 37 * Return: argument 38 */ 39 static u32 rsi_sdio_set_cmd52_arg(bool rw, 40 u8 func, 41 u8 raw, 42 u32 address, 43 u8 writedata) 44 { 45 return ((rw & 1) << 31) | ((func & 0x7) << 28) | 46 ((raw & 1) << 27) | (1 << 26) | 47 ((address & 0x1FFFF) << 9) | (1 << 8) | 48 (writedata & 0xFF); 49 } 50 51 /** 52 * rsi_cmd52writebyte() - This function issues cmd52 byte write onto the card. 53 * @card: Pointer to the mmc_card. 54 * @address: Address to write. 55 * @byte: Data to write. 56 * 57 * Return: Write status. 58 */ 59 static int rsi_cmd52writebyte(struct mmc_card *card, 60 u32 address, 61 u8 byte) 62 { 63 struct mmc_command io_cmd; 64 u32 arg; 65 66 memset(&io_cmd, 0, sizeof(io_cmd)); 67 arg = rsi_sdio_set_cmd52_arg(1, 0, 0, address, byte); 68 io_cmd.opcode = SD_IO_RW_DIRECT; 69 io_cmd.arg = arg; 70 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC; 71 72 return mmc_wait_for_cmd(card->host, &io_cmd, 0); 73 } 74 75 /** 76 * rsi_cmd52readbyte() - This function issues cmd52 byte read onto the card. 77 * @card: Pointer to the mmc_card. 78 * @address: Address to read from. 79 * @byte: Variable to store read value. 80 * 81 * Return: Read status. 82 */ 83 static int rsi_cmd52readbyte(struct mmc_card *card, 84 u32 address, 85 u8 *byte) 86 { 87 struct mmc_command io_cmd; 88 u32 arg; 89 int err; 90 91 memset(&io_cmd, 0, sizeof(io_cmd)); 92 arg = rsi_sdio_set_cmd52_arg(0, 0, 0, address, 0); 93 io_cmd.opcode = SD_IO_RW_DIRECT; 94 io_cmd.arg = arg; 95 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC; 96 97 err = mmc_wait_for_cmd(card->host, &io_cmd, 0); 98 if ((!err) && (byte)) 99 *byte = io_cmd.resp[0] & 0xFF; 100 return err; 101 } 102 103 /** 104 * rsi_issue_sdiocommand() - This function issues sdio commands. 105 * @func: Pointer to the sdio_func structure. 106 * @opcode: Opcode value. 107 * @arg: Arguments to pass. 108 * @flags: Flags which are set. 109 * @resp: Pointer to store response. 110 * 111 * Return: err: command status as 0 or -1. 112 */ 113 static int rsi_issue_sdiocommand(struct sdio_func *func, 114 u32 opcode, 115 u32 arg, 116 u32 flags, 117 u32 *resp) 118 { 119 struct mmc_command cmd; 120 struct mmc_host *host; 121 int err; 122 123 host = func->card->host; 124 125 memset(&cmd, 0, sizeof(struct mmc_command)); 126 cmd.opcode = opcode; 127 cmd.arg = arg; 128 cmd.flags = flags; 129 err = mmc_wait_for_cmd(host, &cmd, 3); 130 131 if ((!err) && (resp)) 132 *resp = cmd.resp[0]; 133 134 return err; 135 } 136 137 /** 138 * rsi_handle_interrupt() - This function is called upon the occurrence 139 * of an interrupt. 140 * @function: Pointer to the sdio_func structure. 141 * 142 * Return: None. 143 */ 144 static void rsi_handle_interrupt(struct sdio_func *function) 145 { 146 struct rsi_hw *adapter = sdio_get_drvdata(function); 147 struct rsi_91x_sdiodev *dev = 148 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 149 150 if (adapter->priv->fsm_state == FSM_FW_NOT_LOADED) 151 return; 152 153 rsi_set_event(&dev->rx_thread.event); 154 } 155 156 /** 157 * rsi_reset_card() - This function resets and re-initializes the card. 158 * @pfunction: Pointer to the sdio_func structure. 159 * 160 * Return: None. 161 */ 162 static void rsi_reset_card(struct sdio_func *pfunction) 163 { 164 int ret = 0; 165 int err; 166 struct mmc_card *card = pfunction->card; 167 struct mmc_host *host = card->host; 168 u8 cmd52_resp; 169 u32 clock, resp, i; 170 u16 rca; 171 172 /* Reset 9110 chip */ 173 ret = rsi_cmd52writebyte(pfunction->card, 174 SDIO_CCCR_ABORT, 175 (1 << 3)); 176 177 /* Card will not send any response as it is getting reset immediately 178 * Hence expect a timeout status from host controller 179 */ 180 if (ret != -ETIMEDOUT) 181 rsi_dbg(ERR_ZONE, "%s: Reset failed : %d\n", __func__, ret); 182 183 /* Wait for few milli seconds to get rid of residue charges if any */ 184 msleep(20); 185 186 /* Initialize the SDIO card */ 187 host->ios.chip_select = MMC_CS_DONTCARE; 188 host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN; 189 host->ios.power_mode = MMC_POWER_UP; 190 host->ios.bus_width = MMC_BUS_WIDTH_1; 191 host->ios.timing = MMC_TIMING_LEGACY; 192 host->ops->set_ios(host, &host->ios); 193 194 /* 195 * This delay should be sufficient to allow the power supply 196 * to reach the minimum voltage. 197 */ 198 msleep(20); 199 200 host->ios.clock = host->f_min; 201 host->ios.power_mode = MMC_POWER_ON; 202 host->ops->set_ios(host, &host->ios); 203 204 /* 205 * This delay must be at least 74 clock sizes, or 1 ms, or the 206 * time required to reach a stable voltage. 207 */ 208 msleep(20); 209 210 /* Issue CMD0. Goto idle state */ 211 host->ios.chip_select = MMC_CS_HIGH; 212 host->ops->set_ios(host, &host->ios); 213 msleep(20); 214 err = rsi_issue_sdiocommand(pfunction, 215 MMC_GO_IDLE_STATE, 216 0, 217 (MMC_RSP_NONE | MMC_CMD_BC), 218 NULL); 219 host->ios.chip_select = MMC_CS_DONTCARE; 220 host->ops->set_ios(host, &host->ios); 221 msleep(20); 222 host->use_spi_crc = 0; 223 224 if (err) 225 rsi_dbg(ERR_ZONE, "%s: CMD0 failed : %d\n", __func__, err); 226 227 /* Issue CMD5, arg = 0 */ 228 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND, 0, 229 (MMC_RSP_R4 | MMC_CMD_BCR), &resp); 230 if (err) 231 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n", 232 __func__, err); 233 card->ocr = resp; 234 /* Issue CMD5, arg = ocr. Wait till card is ready */ 235 for (i = 0; i < 100; i++) { 236 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND, 237 card->ocr, 238 (MMC_RSP_R4 | MMC_CMD_BCR), &resp); 239 if (err) { 240 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n", 241 __func__, err); 242 break; 243 } 244 245 if (resp & MMC_CARD_BUSY) 246 break; 247 msleep(20); 248 } 249 250 if ((i == 100) || (err)) { 251 rsi_dbg(ERR_ZONE, "%s: card in not ready : %d %d\n", 252 __func__, i, err); 253 return; 254 } 255 256 /* Issue CMD3, get RCA */ 257 err = rsi_issue_sdiocommand(pfunction, 258 SD_SEND_RELATIVE_ADDR, 259 0, 260 (MMC_RSP_R6 | MMC_CMD_BCR), 261 &resp); 262 if (err) { 263 rsi_dbg(ERR_ZONE, "%s: CMD3 failed : %d\n", __func__, err); 264 return; 265 } 266 rca = resp >> 16; 267 host->ios.bus_mode = MMC_BUSMODE_PUSHPULL; 268 host->ops->set_ios(host, &host->ios); 269 270 /* Issue CMD7, select card */ 271 err = rsi_issue_sdiocommand(pfunction, 272 MMC_SELECT_CARD, 273 (rca << 16), 274 (MMC_RSP_R1 | MMC_CMD_AC), 275 NULL); 276 if (err) { 277 rsi_dbg(ERR_ZONE, "%s: CMD7 failed : %d\n", __func__, err); 278 return; 279 } 280 281 /* Enable high speed */ 282 if (card->host->caps & MMC_CAP_SD_HIGHSPEED) { 283 rsi_dbg(ERR_ZONE, "%s: Set high speed mode\n", __func__); 284 err = rsi_cmd52readbyte(card, SDIO_CCCR_SPEED, &cmd52_resp); 285 if (err) { 286 rsi_dbg(ERR_ZONE, "%s: CCCR speed reg read failed: %d\n", 287 __func__, err); 288 } else { 289 err = rsi_cmd52writebyte(card, 290 SDIO_CCCR_SPEED, 291 (cmd52_resp | SDIO_SPEED_EHS)); 292 if (err) { 293 rsi_dbg(ERR_ZONE, 294 "%s: CCR speed regwrite failed %d\n", 295 __func__, err); 296 return; 297 } 298 host->ios.timing = MMC_TIMING_SD_HS; 299 host->ops->set_ios(host, &host->ios); 300 } 301 } 302 303 /* Set clock */ 304 if (mmc_card_hs(card)) 305 clock = 50000000; 306 else 307 clock = card->cis.max_dtr; 308 309 if (clock > host->f_max) 310 clock = host->f_max; 311 312 host->ios.clock = clock; 313 host->ops->set_ios(host, &host->ios); 314 315 if (card->host->caps & MMC_CAP_4_BIT_DATA) { 316 /* CMD52: Set bus width & disable card detect resistor */ 317 err = rsi_cmd52writebyte(card, 318 SDIO_CCCR_IF, 319 (SDIO_BUS_CD_DISABLE | 320 SDIO_BUS_WIDTH_4BIT)); 321 if (err) { 322 rsi_dbg(ERR_ZONE, "%s: Set bus mode failed : %d\n", 323 __func__, err); 324 return; 325 } 326 host->ios.bus_width = MMC_BUS_WIDTH_4; 327 host->ops->set_ios(host, &host->ios); 328 } 329 } 330 331 /** 332 * rsi_setclock() - This function sets the clock frequency. 333 * @adapter: Pointer to the adapter structure. 334 * @freq: Clock frequency. 335 * 336 * Return: None. 337 */ 338 static void rsi_setclock(struct rsi_hw *adapter, u32 freq) 339 { 340 struct rsi_91x_sdiodev *dev = 341 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 342 struct mmc_host *host = dev->pfunction->card->host; 343 u32 clock; 344 345 clock = freq * 1000; 346 if (clock > host->f_max) 347 clock = host->f_max; 348 host->ios.clock = clock; 349 host->ops->set_ios(host, &host->ios); 350 } 351 352 /** 353 * rsi_setblocklength() - This function sets the host block length. 354 * @adapter: Pointer to the adapter structure. 355 * @length: Block length to be set. 356 * 357 * Return: status: 0 on success, -1 on failure. 358 */ 359 static int rsi_setblocklength(struct rsi_hw *adapter, u32 length) 360 { 361 struct rsi_91x_sdiodev *dev = 362 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 363 int status; 364 rsi_dbg(INIT_ZONE, "%s: Setting the block length\n", __func__); 365 366 status = sdio_set_block_size(dev->pfunction, length); 367 dev->pfunction->max_blksize = 256; 368 adapter->block_size = dev->pfunction->max_blksize; 369 370 rsi_dbg(INFO_ZONE, 371 "%s: Operational blk length is %d\n", __func__, length); 372 return status; 373 } 374 375 /** 376 * rsi_setupcard() - This function queries and sets the card's features. 377 * @adapter: Pointer to the adapter structure. 378 * 379 * Return: status: 0 on success, -1 on failure. 380 */ 381 static int rsi_setupcard(struct rsi_hw *adapter) 382 { 383 struct rsi_91x_sdiodev *dev = 384 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 385 int status = 0; 386 387 rsi_setclock(adapter, 50000); 388 389 dev->tx_blk_size = 256; 390 status = rsi_setblocklength(adapter, dev->tx_blk_size); 391 if (status) 392 rsi_dbg(ERR_ZONE, 393 "%s: Unable to set block length\n", __func__); 394 return status; 395 } 396 397 /** 398 * rsi_sdio_read_register() - This function reads one byte of information 399 * from a register. 400 * @adapter: Pointer to the adapter structure. 401 * @addr: Address of the register. 402 * @data: Pointer to the data that stores the data read. 403 * 404 * Return: 0 on success, -1 on failure. 405 */ 406 int rsi_sdio_read_register(struct rsi_hw *adapter, 407 u32 addr, 408 u8 *data) 409 { 410 struct rsi_91x_sdiodev *dev = 411 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 412 u8 fun_num = 0; 413 int status; 414 415 if (likely(dev->sdio_irq_task != current)) 416 sdio_claim_host(dev->pfunction); 417 418 if (fun_num == 0) 419 *data = sdio_f0_readb(dev->pfunction, addr, &status); 420 else 421 *data = sdio_readb(dev->pfunction, addr, &status); 422 423 if (likely(dev->sdio_irq_task != current)) 424 sdio_release_host(dev->pfunction); 425 426 return status; 427 } 428 429 /** 430 * rsi_sdio_write_register() - This function writes one byte of information 431 * into a register. 432 * @adapter: Pointer to the adapter structure. 433 * @function: Function Number. 434 * @addr: Address of the register. 435 * @data: Pointer to the data tha has to be written. 436 * 437 * Return: 0 on success, -1 on failure. 438 */ 439 int rsi_sdio_write_register(struct rsi_hw *adapter, 440 u8 function, 441 u32 addr, 442 u8 *data) 443 { 444 struct rsi_91x_sdiodev *dev = 445 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 446 int status = 0; 447 448 if (likely(dev->sdio_irq_task != current)) 449 sdio_claim_host(dev->pfunction); 450 451 if (function == 0) 452 sdio_f0_writeb(dev->pfunction, *data, addr, &status); 453 else 454 sdio_writeb(dev->pfunction, *data, addr, &status); 455 456 if (likely(dev->sdio_irq_task != current)) 457 sdio_release_host(dev->pfunction); 458 459 return status; 460 } 461 462 /** 463 * rsi_sdio_ack_intr() - This function acks the interrupt received. 464 * @adapter: Pointer to the adapter structure. 465 * @int_bit: Interrupt bit to write into register. 466 * 467 * Return: None. 468 */ 469 void rsi_sdio_ack_intr(struct rsi_hw *adapter, u8 int_bit) 470 { 471 int status; 472 status = rsi_sdio_write_register(adapter, 473 1, 474 (SDIO_FUN1_INTR_CLR_REG | 475 RSI_SD_REQUEST_MASTER), 476 &int_bit); 477 if (status) 478 rsi_dbg(ERR_ZONE, "%s: unable to send ack\n", __func__); 479 } 480 481 482 483 /** 484 * rsi_sdio_read_register_multiple() - This function read multiple bytes of 485 * information from the SD card. 486 * @adapter: Pointer to the adapter structure. 487 * @addr: Address of the register. 488 * @count: Number of multiple bytes to be read. 489 * @data: Pointer to the read data. 490 * 491 * Return: 0 on success, -1 on failure. 492 */ 493 static int rsi_sdio_read_register_multiple(struct rsi_hw *adapter, 494 u32 addr, 495 u8 *data, 496 u16 count) 497 { 498 struct rsi_91x_sdiodev *dev = 499 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 500 u32 status; 501 502 if (likely(dev->sdio_irq_task != current)) 503 sdio_claim_host(dev->pfunction); 504 505 status = sdio_readsb(dev->pfunction, data, addr, count); 506 507 if (likely(dev->sdio_irq_task != current)) 508 sdio_release_host(dev->pfunction); 509 510 if (status != 0) 511 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 read failed\n", __func__); 512 return status; 513 } 514 515 /** 516 * rsi_sdio_write_register_multiple() - This function writes multiple bytes of 517 * information to the SD card. 518 * @adapter: Pointer to the adapter structure. 519 * @addr: Address of the register. 520 * @data: Pointer to the data that has to be written. 521 * @count: Number of multiple bytes to be written. 522 * 523 * Return: 0 on success, -1 on failure. 524 */ 525 int rsi_sdio_write_register_multiple(struct rsi_hw *adapter, 526 u32 addr, 527 u8 *data, 528 u16 count) 529 { 530 struct rsi_91x_sdiodev *dev = 531 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 532 int status; 533 534 if (dev->write_fail > 1) { 535 rsi_dbg(ERR_ZONE, "%s: Stopping card writes\n", __func__); 536 return 0; 537 } else if (dev->write_fail == 1) { 538 /** 539 * Assuming it is a CRC failure, we want to allow another 540 * card write 541 */ 542 rsi_dbg(ERR_ZONE, "%s: Continue card writes\n", __func__); 543 dev->write_fail++; 544 } 545 546 if (likely(dev->sdio_irq_task != current)) 547 sdio_claim_host(dev->pfunction); 548 549 status = sdio_writesb(dev->pfunction, addr, data, count); 550 551 if (likely(dev->sdio_irq_task != current)) 552 sdio_release_host(dev->pfunction); 553 554 if (status) { 555 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 write failed %d\n", 556 __func__, status); 557 dev->write_fail = 2; 558 } else { 559 memcpy(dev->prev_desc, data, FRAME_DESC_SZ); 560 } 561 return status; 562 } 563 564 static int rsi_sdio_load_data_master_write(struct rsi_hw *adapter, 565 u32 base_address, 566 u32 instructions_sz, 567 u16 block_size, 568 u8 *ta_firmware) 569 { 570 u32 num_blocks, offset, i; 571 u16 msb_address, lsb_address; 572 u8 *temp_buf; 573 int status; 574 575 num_blocks = instructions_sz / block_size; 576 msb_address = base_address >> 16; 577 578 rsi_dbg(INFO_ZONE, "ins_size: %d, num_blocks: %d\n", 579 instructions_sz, num_blocks); 580 581 temp_buf = kmalloc(block_size, GFP_KERNEL); 582 if (!temp_buf) 583 return -ENOMEM; 584 585 /* Loading DM ms word in the sdio slave */ 586 status = rsi_sdio_master_access_msword(adapter, msb_address); 587 if (status < 0) { 588 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__); 589 goto out_free; 590 } 591 592 for (offset = 0, i = 0; i < num_blocks; i++, offset += block_size) { 593 memcpy(temp_buf, ta_firmware + offset, block_size); 594 lsb_address = (u16)base_address; 595 status = rsi_sdio_write_register_multiple 596 (adapter, 597 lsb_address | RSI_SD_REQUEST_MASTER, 598 temp_buf, block_size); 599 if (status < 0) { 600 rsi_dbg(ERR_ZONE, "%s: failed to write\n", __func__); 601 goto out_free; 602 } 603 rsi_dbg(INFO_ZONE, "%s: loading block: %d\n", __func__, i); 604 base_address += block_size; 605 606 if ((base_address >> 16) != msb_address) { 607 msb_address += 1; 608 609 /* Loading DM ms word in the sdio slave */ 610 status = rsi_sdio_master_access_msword(adapter, 611 msb_address); 612 if (status < 0) { 613 rsi_dbg(ERR_ZONE, 614 "%s: Unable to set ms word reg\n", 615 __func__); 616 goto out_free; 617 } 618 } 619 } 620 621 if (instructions_sz % block_size) { 622 memset(temp_buf, 0, block_size); 623 memcpy(temp_buf, ta_firmware + offset, 624 instructions_sz % block_size); 625 lsb_address = (u16)base_address; 626 status = rsi_sdio_write_register_multiple 627 (adapter, 628 lsb_address | RSI_SD_REQUEST_MASTER, 629 temp_buf, 630 instructions_sz % block_size); 631 if (status < 0) 632 goto out_free; 633 rsi_dbg(INFO_ZONE, 634 "Written Last Block in Address 0x%x Successfully\n", 635 offset | RSI_SD_REQUEST_MASTER); 636 } 637 638 status = 0; 639 out_free: 640 kfree(temp_buf); 641 return status; 642 } 643 644 #define FLASH_SIZE_ADDR 0x04000016 645 static int rsi_sdio_master_reg_read(struct rsi_hw *adapter, u32 addr, 646 u32 *read_buf, u16 size) 647 { 648 u32 addr_on_bus, *data; 649 u16 ms_addr; 650 int status; 651 652 data = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL); 653 if (!data) 654 return -ENOMEM; 655 656 ms_addr = (addr >> 16); 657 status = rsi_sdio_master_access_msword(adapter, ms_addr); 658 if (status < 0) { 659 rsi_dbg(ERR_ZONE, 660 "%s: Unable to set ms word to common reg\n", 661 __func__); 662 goto err; 663 } 664 addr &= 0xFFFF; 665 666 addr_on_bus = (addr & 0xFF000000); 667 if ((addr_on_bus == (FLASH_SIZE_ADDR & 0xFF000000)) || 668 (addr_on_bus == 0x0)) 669 addr_on_bus = (addr & ~(0x3)); 670 else 671 addr_on_bus = addr; 672 673 /* Bring TA out of reset */ 674 status = rsi_sdio_read_register_multiple 675 (adapter, 676 (addr_on_bus | RSI_SD_REQUEST_MASTER), 677 (u8 *)data, 4); 678 if (status < 0) { 679 rsi_dbg(ERR_ZONE, "%s: AHB register read failed\n", __func__); 680 goto err; 681 } 682 if (size == 2) { 683 if ((addr & 0x3) == 0) 684 *read_buf = *data; 685 else 686 *read_buf = (*data >> 16); 687 *read_buf = (*read_buf & 0xFFFF); 688 } else if (size == 1) { 689 if ((addr & 0x3) == 0) 690 *read_buf = *data; 691 else if ((addr & 0x3) == 1) 692 *read_buf = (*data >> 8); 693 else if ((addr & 0x3) == 2) 694 *read_buf = (*data >> 16); 695 else 696 *read_buf = (*data >> 24); 697 *read_buf = (*read_buf & 0xFF); 698 } else { 699 *read_buf = *data; 700 } 701 702 err: 703 kfree(data); 704 return status; 705 } 706 707 static int rsi_sdio_master_reg_write(struct rsi_hw *adapter, 708 unsigned long addr, 709 unsigned long data, u16 size) 710 { 711 unsigned long *data_aligned; 712 int status; 713 714 data_aligned = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL); 715 if (!data_aligned) 716 return -ENOMEM; 717 718 if (size == 2) { 719 *data_aligned = ((data << 16) | (data & 0xFFFF)); 720 } else if (size == 1) { 721 u32 temp_data = data & 0xFF; 722 723 *data_aligned = ((temp_data << 24) | (temp_data << 16) | 724 (temp_data << 8) | temp_data); 725 } else { 726 *data_aligned = data; 727 } 728 size = 4; 729 730 status = rsi_sdio_master_access_msword(adapter, (addr >> 16)); 731 if (status < 0) { 732 rsi_dbg(ERR_ZONE, 733 "%s: Unable to set ms word to common reg\n", 734 __func__); 735 kfree(data_aligned); 736 return -EIO; 737 } 738 addr = addr & 0xFFFF; 739 740 /* Bring TA out of reset */ 741 status = rsi_sdio_write_register_multiple 742 (adapter, 743 (addr | RSI_SD_REQUEST_MASTER), 744 (u8 *)data_aligned, size); 745 if (status < 0) 746 rsi_dbg(ERR_ZONE, 747 "%s: Unable to do AHB reg write\n", __func__); 748 749 kfree(data_aligned); 750 return status; 751 } 752 753 /** 754 * rsi_sdio_host_intf_write_pkt() - This function writes the packet to device. 755 * @adapter: Pointer to the adapter structure. 756 * @pkt: Pointer to the data to be written on to the device. 757 * @len: length of the data to be written on to the device. 758 * 759 * Return: 0 on success, -1 on failure. 760 */ 761 static int rsi_sdio_host_intf_write_pkt(struct rsi_hw *adapter, 762 u8 *pkt, 763 u32 len) 764 { 765 struct rsi_91x_sdiodev *dev = 766 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 767 u32 block_size = dev->tx_blk_size; 768 u32 num_blocks, address, length; 769 u32 queueno; 770 int status; 771 772 queueno = ((pkt[1] >> 4) & 0xf); 773 if (queueno == RSI_BT_MGMT_Q || queueno == RSI_BT_DATA_Q) 774 queueno = RSI_BT_Q; 775 776 num_blocks = len / block_size; 777 778 if (len % block_size) 779 num_blocks++; 780 781 address = (num_blocks * block_size | (queueno << 12)); 782 length = num_blocks * block_size; 783 784 status = rsi_sdio_write_register_multiple(adapter, 785 address, 786 (u8 *)pkt, 787 length); 788 if (status) 789 rsi_dbg(ERR_ZONE, "%s: Unable to write onto the card: %d\n", 790 __func__, status); 791 rsi_dbg(DATA_TX_ZONE, "%s: Successfully written onto card\n", __func__); 792 return status; 793 } 794 795 /** 796 * rsi_sdio_host_intf_read_pkt() - This function reads the packet 797 * from the device. 798 * @adapter: Pointer to the adapter data structure. 799 * @pkt: Pointer to the packet data to be read from the the device. 800 * @length: Length of the data to be read from the device. 801 * 802 * Return: 0 on success, -1 on failure. 803 */ 804 int rsi_sdio_host_intf_read_pkt(struct rsi_hw *adapter, 805 u8 *pkt, 806 u32 length) 807 { 808 int status = -EINVAL; 809 810 if (!length) { 811 rsi_dbg(ERR_ZONE, "%s: Pkt size is zero\n", __func__); 812 return status; 813 } 814 815 status = rsi_sdio_read_register_multiple(adapter, 816 length, 817 (u8 *)pkt, 818 length); /*num of bytes*/ 819 820 if (status) 821 rsi_dbg(ERR_ZONE, "%s: Failed to read frame: %d\n", __func__, 822 status); 823 return status; 824 } 825 826 /** 827 * rsi_init_sdio_interface() - This function does init specific to SDIO. 828 * 829 * @adapter: Pointer to the adapter data structure. 830 * @pfunction: Pointer to the sdio_func structure. 831 * 832 * Return: 0 on success, -1 on failure. 833 */ 834 static int rsi_init_sdio_interface(struct rsi_hw *adapter, 835 struct sdio_func *pfunction) 836 { 837 struct rsi_91x_sdiodev *rsi_91x_dev; 838 int status; 839 840 rsi_91x_dev = kzalloc(sizeof(*rsi_91x_dev), GFP_KERNEL); 841 if (!rsi_91x_dev) 842 return -ENOMEM; 843 844 adapter->rsi_dev = rsi_91x_dev; 845 846 sdio_claim_host(pfunction); 847 848 pfunction->enable_timeout = 100; 849 status = sdio_enable_func(pfunction); 850 if (status) { 851 rsi_dbg(ERR_ZONE, "%s: Failed to enable interface\n", __func__); 852 sdio_release_host(pfunction); 853 return status; 854 } 855 856 rsi_dbg(INIT_ZONE, "%s: Enabled the interface\n", __func__); 857 858 rsi_91x_dev->pfunction = pfunction; 859 adapter->device = &pfunction->dev; 860 861 sdio_set_drvdata(pfunction, adapter); 862 863 status = rsi_setupcard(adapter); 864 if (status) { 865 rsi_dbg(ERR_ZONE, "%s: Failed to setup card\n", __func__); 866 goto fail; 867 } 868 869 rsi_dbg(INIT_ZONE, "%s: Setup card successfully\n", __func__); 870 871 status = rsi_init_sdio_slave_regs(adapter); 872 if (status) { 873 rsi_dbg(ERR_ZONE, "%s: Failed to init slave regs\n", __func__); 874 goto fail; 875 } 876 sdio_release_host(pfunction); 877 878 adapter->determine_event_timeout = rsi_sdio_determine_event_timeout; 879 adapter->check_hw_queue_status = rsi_sdio_check_buffer_status; 880 881 #ifdef CONFIG_RSI_DEBUGFS 882 adapter->num_debugfs_entries = MAX_DEBUGFS_ENTRIES; 883 #endif 884 return 0; 885 fail: 886 sdio_disable_func(pfunction); 887 sdio_release_host(pfunction); 888 return status; 889 } 890 891 static int rsi_sdio_reinit_device(struct rsi_hw *adapter) 892 { 893 struct rsi_91x_sdiodev *sdev = adapter->rsi_dev; 894 struct sdio_func *pfunction = sdev->pfunction; 895 int ii; 896 897 for (ii = 0; ii < NUM_SOFT_QUEUES; ii++) 898 skb_queue_purge(&adapter->priv->tx_queue[ii]); 899 900 /* Initialize device again */ 901 sdio_claim_host(pfunction); 902 903 sdio_release_irq(pfunction); 904 rsi_reset_card(pfunction); 905 906 sdio_enable_func(pfunction); 907 rsi_setupcard(adapter); 908 rsi_init_sdio_slave_regs(adapter); 909 sdio_claim_irq(pfunction, rsi_handle_interrupt); 910 rsi_hal_device_init(adapter); 911 912 sdio_release_host(pfunction); 913 914 return 0; 915 } 916 917 static int rsi_sdio_ta_reset(struct rsi_hw *adapter) 918 { 919 int status; 920 u32 addr; 921 u8 *data; 922 923 data = kzalloc(RSI_9116_REG_SIZE, GFP_KERNEL); 924 if (!data) 925 return -ENOMEM; 926 927 status = rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR); 928 if (status < 0) { 929 rsi_dbg(ERR_ZONE, 930 "Unable to set ms word to common reg\n"); 931 goto err; 932 } 933 934 rsi_dbg(INIT_ZONE, "%s: Bring TA out of reset\n", __func__); 935 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data); 936 addr = TA_HOLD_THREAD_REG | RSI_SD_REQUEST_MASTER; 937 status = rsi_sdio_write_register_multiple(adapter, addr, 938 (u8 *)data, 939 RSI_9116_REG_SIZE); 940 if (status < 0) { 941 rsi_dbg(ERR_ZONE, "Unable to hold TA threads\n"); 942 goto err; 943 } 944 945 put_unaligned_le32(TA_SOFT_RST_CLR, data); 946 addr = TA_SOFT_RESET_REG | RSI_SD_REQUEST_MASTER; 947 status = rsi_sdio_write_register_multiple(adapter, addr, 948 (u8 *)data, 949 RSI_9116_REG_SIZE); 950 if (status < 0) { 951 rsi_dbg(ERR_ZONE, "Unable to get TA out of reset\n"); 952 goto err; 953 } 954 955 put_unaligned_le32(TA_PC_ZERO, data); 956 addr = TA_TH0_PC_REG | RSI_SD_REQUEST_MASTER; 957 status = rsi_sdio_write_register_multiple(adapter, addr, 958 (u8 *)data, 959 RSI_9116_REG_SIZE); 960 if (status < 0) { 961 rsi_dbg(ERR_ZONE, "Unable to Reset TA PC value\n"); 962 status = -EINVAL; 963 goto err; 964 } 965 966 put_unaligned_le32(TA_RELEASE_THREAD_VALUE, data); 967 addr = TA_RELEASE_THREAD_REG | RSI_SD_REQUEST_MASTER; 968 status = rsi_sdio_write_register_multiple(adapter, addr, 969 (u8 *)data, 970 RSI_9116_REG_SIZE); 971 if (status < 0) { 972 rsi_dbg(ERR_ZONE, "Unable to release TA threads\n"); 973 goto err; 974 } 975 976 status = rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR); 977 if (status < 0) { 978 rsi_dbg(ERR_ZONE, "Unable to set ms word to common reg\n"); 979 goto err; 980 } 981 rsi_dbg(INIT_ZONE, "***** TA Reset done *****\n"); 982 983 err: 984 kfree(data); 985 return status; 986 } 987 988 static struct rsi_host_intf_ops sdio_host_intf_ops = { 989 .write_pkt = rsi_sdio_host_intf_write_pkt, 990 .read_pkt = rsi_sdio_host_intf_read_pkt, 991 .master_access_msword = rsi_sdio_master_access_msword, 992 .read_reg_multiple = rsi_sdio_read_register_multiple, 993 .write_reg_multiple = rsi_sdio_write_register_multiple, 994 .master_reg_read = rsi_sdio_master_reg_read, 995 .master_reg_write = rsi_sdio_master_reg_write, 996 .load_data_master_write = rsi_sdio_load_data_master_write, 997 .reinit_device = rsi_sdio_reinit_device, 998 .ta_reset = rsi_sdio_ta_reset, 999 }; 1000 1001 /** 1002 * rsi_probe() - This function is called by kernel when the driver provided 1003 * Vendor and device IDs are matched. All the initialization 1004 * work is done here. 1005 * @pfunction: Pointer to the sdio_func structure. 1006 * @id: Pointer to sdio_device_id structure. 1007 * 1008 * Return: 0 on success, 1 on failure. 1009 */ 1010 static int rsi_probe(struct sdio_func *pfunction, 1011 const struct sdio_device_id *id) 1012 { 1013 struct rsi_hw *adapter; 1014 struct rsi_91x_sdiodev *sdev; 1015 int status = -EINVAL; 1016 1017 rsi_dbg(INIT_ZONE, "%s: Init function called\n", __func__); 1018 1019 adapter = rsi_91x_init(dev_oper_mode); 1020 if (!adapter) { 1021 rsi_dbg(ERR_ZONE, "%s: Failed to init os intf ops\n", 1022 __func__); 1023 return -EINVAL; 1024 } 1025 adapter->rsi_host_intf = RSI_HOST_INTF_SDIO; 1026 adapter->host_intf_ops = &sdio_host_intf_ops; 1027 1028 if (rsi_init_sdio_interface(adapter, pfunction)) { 1029 rsi_dbg(ERR_ZONE, "%s: Failed to init sdio interface\n", 1030 __func__); 1031 status = -EIO; 1032 goto fail_free_adapter; 1033 } 1034 1035 if (pfunction->device == SDIO_DEVICE_ID_RSI_9113) { 1036 rsi_dbg(ERR_ZONE, "%s: 9113 module detected\n", __func__); 1037 adapter->device_model = RSI_DEV_9113; 1038 } else if (pfunction->device == SDIO_DEVICE_ID_RSI_9116) { 1039 rsi_dbg(ERR_ZONE, "%s: 9116 module detected\n", __func__); 1040 adapter->device_model = RSI_DEV_9116; 1041 } else { 1042 rsi_dbg(ERR_ZONE, 1043 "%s: Unsupported RSI device id 0x%x\n", __func__, 1044 pfunction->device); 1045 goto fail_free_adapter; 1046 } 1047 1048 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev; 1049 rsi_init_event(&sdev->rx_thread.event); 1050 status = rsi_create_kthread(adapter->priv, &sdev->rx_thread, 1051 rsi_sdio_rx_thread, "SDIO-RX-Thread"); 1052 if (status) { 1053 rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__); 1054 goto fail_kill_thread; 1055 } 1056 1057 sdio_claim_host(pfunction); 1058 if (sdio_claim_irq(pfunction, rsi_handle_interrupt)) { 1059 rsi_dbg(ERR_ZONE, "%s: Failed to request IRQ\n", __func__); 1060 sdio_release_host(pfunction); 1061 status = -EIO; 1062 goto fail_claim_irq; 1063 } 1064 sdio_release_host(pfunction); 1065 rsi_dbg(INIT_ZONE, "%s: Registered Interrupt handler\n", __func__); 1066 1067 if (rsi_hal_device_init(adapter)) { 1068 rsi_dbg(ERR_ZONE, "%s: Failed in device init\n", __func__); 1069 status = -EINVAL; 1070 goto fail_dev_init; 1071 } 1072 rsi_dbg(INFO_ZONE, "===> RSI Device Init Done <===\n"); 1073 1074 if (rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR)) { 1075 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__); 1076 status = -EIO; 1077 goto fail_dev_init; 1078 } 1079 1080 adapter->priv->hibernate_resume = false; 1081 adapter->priv->reinit_hw = false; 1082 return 0; 1083 1084 fail_dev_init: 1085 sdio_claim_host(pfunction); 1086 sdio_release_irq(pfunction); 1087 sdio_release_host(pfunction); 1088 fail_claim_irq: 1089 rsi_kill_thread(&sdev->rx_thread); 1090 fail_kill_thread: 1091 sdio_claim_host(pfunction); 1092 sdio_disable_func(pfunction); 1093 sdio_release_host(pfunction); 1094 fail_free_adapter: 1095 rsi_91x_deinit(adapter); 1096 rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__); 1097 return status; 1098 } 1099 1100 static void ulp_read_write(struct rsi_hw *adapter, u16 addr, u32 data, 1101 u16 len_in_bits) 1102 { 1103 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG1, 1104 ((addr << 6) | ((data >> 16) & 0xffff)), 2); 1105 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG0, 1106 (data & 0xffff), 2); 1107 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG0, 1108 RSI_GSPI_CTRL_REG0_VALUE, 2); 1109 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG1, 1110 ((len_in_bits - 1) | RSI_GSPI_TRIG), 2); 1111 msleep(20); 1112 } 1113 1114 /*This function resets and re-initializes the chip.*/ 1115 static void rsi_reset_chip(struct rsi_hw *adapter) 1116 { 1117 u8 *data; 1118 u8 sdio_interrupt_status = 0; 1119 u8 request = 1; 1120 int ret; 1121 1122 data = kzalloc(sizeof(u32), GFP_KERNEL); 1123 if (!data) 1124 return; 1125 1126 rsi_dbg(INFO_ZONE, "Writing disable to wakeup register\n"); 1127 ret = rsi_sdio_write_register(adapter, 0, SDIO_WAKEUP_REG, &request); 1128 if (ret < 0) { 1129 rsi_dbg(ERR_ZONE, 1130 "%s: Failed to write SDIO wakeup register\n", __func__); 1131 goto err; 1132 } 1133 msleep(20); 1134 ret = rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER, 1135 &sdio_interrupt_status); 1136 if (ret < 0) { 1137 rsi_dbg(ERR_ZONE, "%s: Failed to Read Intr Status Register\n", 1138 __func__); 1139 goto err; 1140 } 1141 rsi_dbg(INFO_ZONE, "%s: Intr Status Register value = %d\n", 1142 __func__, sdio_interrupt_status); 1143 1144 /* Put Thread-Arch processor on hold */ 1145 if (rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR)) { 1146 rsi_dbg(ERR_ZONE, 1147 "%s: Unable to set ms word to common reg\n", 1148 __func__); 1149 goto err; 1150 } 1151 1152 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data); 1153 if (rsi_sdio_write_register_multiple(adapter, TA_HOLD_THREAD_REG | 1154 RSI_SD_REQUEST_MASTER, 1155 data, 4)) { 1156 rsi_dbg(ERR_ZONE, 1157 "%s: Unable to hold Thread-Arch processor threads\n", 1158 __func__); 1159 goto err; 1160 } 1161 1162 /* This msleep will ensure Thread-Arch processor to go to hold 1163 * and any pending dma transfers to rf spi in device to finish. 1164 */ 1165 msleep(100); 1166 if (adapter->device_model != RSI_DEV_9116) { 1167 ulp_read_write(adapter, RSI_ULP_RESET_REG, RSI_ULP_WRITE_0, 32); 1168 ulp_read_write(adapter, 1169 RSI_WATCH_DOG_TIMER_1, RSI_ULP_WRITE_2, 32); 1170 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_2, RSI_ULP_WRITE_0, 1171 32); 1172 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_1, 1173 RSI_ULP_WRITE_50, 32); 1174 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_2, 1175 RSI_ULP_WRITE_0, 32); 1176 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_ENABLE, 1177 RSI_ULP_TIMER_ENABLE, 32); 1178 } else { 1179 if ((rsi_sdio_master_reg_write(adapter, 1180 NWP_WWD_INTERRUPT_TIMER, 1181 NWP_WWD_INT_TIMER_CLKS, 1182 RSI_9116_REG_SIZE)) < 0) { 1183 rsi_dbg(ERR_ZONE, "Failed to write to intr timer\n"); 1184 } 1185 if ((rsi_sdio_master_reg_write(adapter, 1186 NWP_WWD_SYSTEM_RESET_TIMER, 1187 NWP_WWD_SYS_RESET_TIMER_CLKS, 1188 RSI_9116_REG_SIZE)) < 0) { 1189 rsi_dbg(ERR_ZONE, 1190 "Failed to write to system reset timer\n"); 1191 } 1192 if ((rsi_sdio_master_reg_write(adapter, 1193 NWP_WWD_MODE_AND_RSTART, 1194 NWP_WWD_TIMER_DISABLE, 1195 RSI_9116_REG_SIZE)) < 0) { 1196 rsi_dbg(ERR_ZONE, 1197 "Failed to write to mode and restart\n"); 1198 } 1199 rsi_dbg(ERR_ZONE, "***** Watch Dog Reset Successful *****\n"); 1200 } 1201 /* This msleep will be sufficient for the ulp 1202 * read write operations to complete for chip reset. 1203 */ 1204 msleep(500); 1205 err: 1206 kfree(data); 1207 return; 1208 } 1209 1210 /** 1211 * rsi_disconnect() - This function performs the reverse of the probe function. 1212 * @pfunction: Pointer to the sdio_func structure. 1213 * 1214 * Return: void. 1215 */ 1216 static void rsi_disconnect(struct sdio_func *pfunction) 1217 { 1218 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1219 struct rsi_91x_sdiodev *dev; 1220 1221 if (!adapter) 1222 return; 1223 1224 dev = (struct rsi_91x_sdiodev *)adapter->rsi_dev; 1225 1226 rsi_kill_thread(&dev->rx_thread); 1227 sdio_claim_host(pfunction); 1228 sdio_release_irq(pfunction); 1229 sdio_release_host(pfunction); 1230 mdelay(10); 1231 1232 rsi_mac80211_detach(adapter); 1233 mdelay(10); 1234 1235 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 && 1236 adapter->priv->bt_adapter) { 1237 rsi_bt_ops.detach(adapter->priv->bt_adapter); 1238 adapter->priv->bt_adapter = NULL; 1239 } 1240 1241 /* Reset Chip */ 1242 rsi_reset_chip(adapter); 1243 1244 /* Resetting to take care of the case, where-in driver is re-loaded */ 1245 sdio_claim_host(pfunction); 1246 rsi_reset_card(pfunction); 1247 sdio_disable_func(pfunction); 1248 sdio_release_host(pfunction); 1249 dev->write_fail = 2; 1250 rsi_91x_deinit(adapter); 1251 rsi_dbg(ERR_ZONE, "##### RSI SDIO device disconnected #####\n"); 1252 1253 } 1254 1255 #ifdef CONFIG_PM 1256 static int rsi_set_sdio_pm_caps(struct rsi_hw *adapter) 1257 { 1258 struct rsi_91x_sdiodev *dev = 1259 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 1260 struct sdio_func *func = dev->pfunction; 1261 int ret; 1262 1263 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 1264 if (ret) 1265 rsi_dbg(ERR_ZONE, "Set sdio keep pwr flag failed: %d\n", ret); 1266 1267 return ret; 1268 } 1269 1270 static int rsi_sdio_disable_interrupts(struct sdio_func *pfunc) 1271 { 1272 struct rsi_hw *adapter = sdio_get_drvdata(pfunc); 1273 u8 isr_status = 0, data = 0; 1274 int ret; 1275 unsigned long t1; 1276 1277 rsi_dbg(INFO_ZONE, "Waiting for interrupts to be cleared.."); 1278 t1 = jiffies; 1279 do { 1280 rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER, 1281 &isr_status); 1282 rsi_dbg(INFO_ZONE, "."); 1283 } while ((isr_status) && (jiffies_to_msecs(jiffies - t1) < 20)); 1284 rsi_dbg(INFO_ZONE, "Interrupts cleared\n"); 1285 1286 sdio_claim_host(pfunc); 1287 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data); 1288 if (ret < 0) { 1289 rsi_dbg(ERR_ZONE, 1290 "%s: Failed to read int enable register\n", 1291 __func__); 1292 goto done; 1293 } 1294 1295 data &= RSI_INT_ENABLE_MASK; 1296 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data); 1297 if (ret < 0) { 1298 rsi_dbg(ERR_ZONE, 1299 "%s: Failed to write to int enable register\n", 1300 __func__); 1301 goto done; 1302 } 1303 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data); 1304 if (ret < 0) { 1305 rsi_dbg(ERR_ZONE, 1306 "%s: Failed to read int enable register\n", 1307 __func__); 1308 goto done; 1309 } 1310 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data); 1311 1312 done: 1313 sdio_release_host(pfunc); 1314 return ret; 1315 } 1316 1317 static int rsi_sdio_enable_interrupts(struct sdio_func *pfunc) 1318 { 1319 u8 data; 1320 int ret; 1321 struct rsi_hw *adapter = sdio_get_drvdata(pfunc); 1322 struct rsi_common *common = adapter->priv; 1323 1324 sdio_claim_host(pfunc); 1325 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data); 1326 if (ret < 0) { 1327 rsi_dbg(ERR_ZONE, 1328 "%s: Failed to read int enable register\n", __func__); 1329 goto done; 1330 } 1331 1332 data |= ~RSI_INT_ENABLE_MASK & 0xff; 1333 1334 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data); 1335 if (ret < 0) { 1336 rsi_dbg(ERR_ZONE, 1337 "%s: Failed to write to int enable register\n", 1338 __func__); 1339 goto done; 1340 } 1341 1342 if ((common->wow_flags & RSI_WOW_ENABLED) && 1343 (common->wow_flags & RSI_WOW_NO_CONNECTION)) 1344 rsi_dbg(ERR_ZONE, 1345 "##### Device can not wake up through WLAN\n"); 1346 1347 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data); 1348 if (ret < 0) { 1349 rsi_dbg(ERR_ZONE, 1350 "%s: Failed to read int enable register\n", __func__); 1351 goto done; 1352 } 1353 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data); 1354 1355 done: 1356 sdio_release_host(pfunc); 1357 return ret; 1358 } 1359 1360 static int rsi_suspend(struct device *dev) 1361 { 1362 int ret; 1363 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1364 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1365 struct rsi_common *common; 1366 1367 if (!adapter) { 1368 rsi_dbg(ERR_ZONE, "Device is not ready\n"); 1369 return -ENODEV; 1370 } 1371 common = adapter->priv; 1372 rsi_sdio_disable_interrupts(pfunction); 1373 1374 ret = rsi_set_sdio_pm_caps(adapter); 1375 if (ret) 1376 rsi_dbg(INFO_ZONE, 1377 "Setting power management caps failed\n"); 1378 common->fsm_state = FSM_CARD_NOT_READY; 1379 1380 return 0; 1381 } 1382 1383 static int rsi_resume(struct device *dev) 1384 { 1385 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1386 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1387 struct rsi_common *common = adapter->priv; 1388 1389 common->fsm_state = FSM_MAC_INIT_DONE; 1390 rsi_sdio_enable_interrupts(pfunction); 1391 1392 return 0; 1393 } 1394 1395 static int rsi_freeze(struct device *dev) 1396 { 1397 int ret; 1398 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1399 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1400 struct rsi_common *common; 1401 struct rsi_91x_sdiodev *sdev; 1402 1403 rsi_dbg(INFO_ZONE, "SDIO Bus freeze ===>\n"); 1404 1405 if (!adapter) { 1406 rsi_dbg(ERR_ZONE, "Device is not ready\n"); 1407 return -ENODEV; 1408 } 1409 common = adapter->priv; 1410 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev; 1411 1412 if ((common->wow_flags & RSI_WOW_ENABLED) && 1413 (common->wow_flags & RSI_WOW_NO_CONNECTION)) 1414 rsi_dbg(ERR_ZONE, 1415 "##### Device can not wake up through WLAN\n"); 1416 1417 if (IS_ENABLED(CONFIG_RSI_COEX) && common->coex_mode > 1 && 1418 common->bt_adapter) { 1419 rsi_bt_ops.detach(common->bt_adapter); 1420 common->bt_adapter = NULL; 1421 } 1422 1423 ret = rsi_sdio_disable_interrupts(pfunction); 1424 1425 if (sdev->write_fail) 1426 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n"); 1427 1428 ret = rsi_set_sdio_pm_caps(adapter); 1429 if (ret) 1430 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n"); 1431 1432 rsi_dbg(INFO_ZONE, "***** RSI module freezed *****\n"); 1433 1434 return 0; 1435 } 1436 1437 static int rsi_thaw(struct device *dev) 1438 { 1439 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1440 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1441 struct rsi_common *common = adapter->priv; 1442 1443 rsi_dbg(ERR_ZONE, "SDIO Bus thaw =====>\n"); 1444 1445 common->hibernate_resume = true; 1446 common->fsm_state = FSM_CARD_NOT_READY; 1447 common->iface_down = true; 1448 1449 rsi_sdio_enable_interrupts(pfunction); 1450 1451 rsi_dbg(INFO_ZONE, "***** RSI module thaw done *****\n"); 1452 1453 return 0; 1454 } 1455 1456 static void rsi_shutdown(struct device *dev) 1457 { 1458 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1459 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1460 struct rsi_91x_sdiodev *sdev = 1461 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 1462 struct ieee80211_hw *hw = adapter->hw; 1463 1464 rsi_dbg(ERR_ZONE, "SDIO Bus shutdown =====>\n"); 1465 1466 if (hw) { 1467 struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config; 1468 1469 if (rsi_config_wowlan(adapter, wowlan)) 1470 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n"); 1471 } 1472 1473 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 && 1474 adapter->priv->bt_adapter) { 1475 rsi_bt_ops.detach(adapter->priv->bt_adapter); 1476 adapter->priv->bt_adapter = NULL; 1477 } 1478 1479 rsi_sdio_disable_interrupts(sdev->pfunction); 1480 1481 if (sdev->write_fail) 1482 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n"); 1483 1484 if (rsi_set_sdio_pm_caps(adapter)) 1485 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n"); 1486 1487 rsi_dbg(INFO_ZONE, "***** RSI module shut down *****\n"); 1488 } 1489 1490 static int rsi_restore(struct device *dev) 1491 { 1492 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1493 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1494 struct rsi_common *common = adapter->priv; 1495 1496 rsi_dbg(INFO_ZONE, "SDIO Bus restore ======>\n"); 1497 common->hibernate_resume = true; 1498 common->fsm_state = FSM_FW_NOT_LOADED; 1499 common->iface_down = true; 1500 1501 adapter->sc_nvifs = 0; 1502 adapter->ps_state = PS_NONE; 1503 1504 common->wow_flags = 0; 1505 common->iface_down = false; 1506 1507 rsi_dbg(INFO_ZONE, "RSI module restored\n"); 1508 1509 return 0; 1510 } 1511 static const struct dev_pm_ops rsi_pm_ops = { 1512 .suspend = rsi_suspend, 1513 .resume_noirq = rsi_resume, 1514 .freeze = rsi_freeze, 1515 .thaw = rsi_thaw, 1516 .restore = rsi_restore, 1517 }; 1518 #endif 1519 1520 static const struct sdio_device_id rsi_dev_table[] = { 1521 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9113) }, 1522 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9116) }, 1523 { /* Blank */}, 1524 }; 1525 1526 static struct sdio_driver rsi_driver = { 1527 .name = "RSI-SDIO WLAN", 1528 .probe = rsi_probe, 1529 .remove = rsi_disconnect, 1530 .id_table = rsi_dev_table, 1531 #ifdef CONFIG_PM 1532 .drv = { 1533 .pm = &rsi_pm_ops, 1534 .shutdown = rsi_shutdown, 1535 } 1536 #endif 1537 }; 1538 1539 /** 1540 * rsi_module_init() - This function registers the sdio module. 1541 * @void: Void. 1542 * 1543 * Return: 0 on success. 1544 */ 1545 static int rsi_module_init(void) 1546 { 1547 int ret; 1548 1549 ret = sdio_register_driver(&rsi_driver); 1550 rsi_dbg(INIT_ZONE, "%s: Registering driver\n", __func__); 1551 return ret; 1552 } 1553 1554 /** 1555 * rsi_module_exit() - This function unregisters the sdio module. 1556 * @void: Void. 1557 * 1558 * Return: None. 1559 */ 1560 static void rsi_module_exit(void) 1561 { 1562 sdio_unregister_driver(&rsi_driver); 1563 rsi_dbg(INFO_ZONE, "%s: Unregistering driver\n", __func__); 1564 } 1565 1566 module_init(rsi_module_init); 1567 module_exit(rsi_module_exit); 1568 1569 MODULE_AUTHOR("Redpine Signals Inc"); 1570 MODULE_DESCRIPTION("Common SDIO layer for RSI drivers"); 1571 MODULE_DEVICE_TABLE(sdio, rsi_dev_table); 1572 MODULE_FIRMWARE(FIRMWARE_RSI9113); 1573 MODULE_VERSION("0.1"); 1574 MODULE_LICENSE("Dual BSD/GPL"); 1575