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, 28 "1[Wi-Fi], 4[BT], 8[BT LE], 5[Wi-Fi STA + BT classic]\n" 29 "9[Wi-Fi STA + BT LE], 13[Wi-Fi STA + BT classic + BT LE]\n" 30 "6[AP + BT classic], 14[AP + BT classic + BT LE]"); 31 32 /** 33 * rsi_sdio_set_cmd52_arg() - This function prepares cmd 52 read/write arg. 34 * @rw: Read/write 35 * @func: function number 36 * @raw: indicates whether to perform read after write 37 * @address: address to which to read/write 38 * @writedata: data to write 39 * 40 * Return: argument 41 */ 42 static u32 rsi_sdio_set_cmd52_arg(bool rw, 43 u8 func, 44 u8 raw, 45 u32 address, 46 u8 writedata) 47 { 48 return ((rw & 1) << 31) | ((func & 0x7) << 28) | 49 ((raw & 1) << 27) | (1 << 26) | 50 ((address & 0x1FFFF) << 9) | (1 << 8) | 51 (writedata & 0xFF); 52 } 53 54 /** 55 * rsi_cmd52writebyte() - This function issues cmd52 byte write onto the card. 56 * @card: Pointer to the mmc_card. 57 * @address: Address to write. 58 * @byte: Data to write. 59 * 60 * Return: Write status. 61 */ 62 static int rsi_cmd52writebyte(struct mmc_card *card, 63 u32 address, 64 u8 byte) 65 { 66 struct mmc_command io_cmd; 67 u32 arg; 68 69 memset(&io_cmd, 0, sizeof(io_cmd)); 70 arg = rsi_sdio_set_cmd52_arg(1, 0, 0, address, byte); 71 io_cmd.opcode = SD_IO_RW_DIRECT; 72 io_cmd.arg = arg; 73 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC; 74 75 return mmc_wait_for_cmd(card->host, &io_cmd, 0); 76 } 77 78 /** 79 * rsi_cmd52readbyte() - This function issues cmd52 byte read onto the card. 80 * @card: Pointer to the mmc_card. 81 * @address: Address to read from. 82 * @byte: Variable to store read value. 83 * 84 * Return: Read status. 85 */ 86 static int rsi_cmd52readbyte(struct mmc_card *card, 87 u32 address, 88 u8 *byte) 89 { 90 struct mmc_command io_cmd; 91 u32 arg; 92 int err; 93 94 memset(&io_cmd, 0, sizeof(io_cmd)); 95 arg = rsi_sdio_set_cmd52_arg(0, 0, 0, address, 0); 96 io_cmd.opcode = SD_IO_RW_DIRECT; 97 io_cmd.arg = arg; 98 io_cmd.flags = MMC_RSP_R5 | MMC_CMD_AC; 99 100 err = mmc_wait_for_cmd(card->host, &io_cmd, 0); 101 if ((!err) && (byte)) 102 *byte = io_cmd.resp[0] & 0xFF; 103 return err; 104 } 105 106 /** 107 * rsi_issue_sdiocommand() - This function issues sdio commands. 108 * @func: Pointer to the sdio_func structure. 109 * @opcode: Opcode value. 110 * @arg: Arguments to pass. 111 * @flags: Flags which are set. 112 * @resp: Pointer to store response. 113 * 114 * Return: err: command status as 0 or -1. 115 */ 116 static int rsi_issue_sdiocommand(struct sdio_func *func, 117 u32 opcode, 118 u32 arg, 119 u32 flags, 120 u32 *resp) 121 { 122 struct mmc_command cmd; 123 struct mmc_host *host; 124 int err; 125 126 host = func->card->host; 127 128 memset(&cmd, 0, sizeof(struct mmc_command)); 129 cmd.opcode = opcode; 130 cmd.arg = arg; 131 cmd.flags = flags; 132 err = mmc_wait_for_cmd(host, &cmd, 3); 133 134 if ((!err) && (resp)) 135 *resp = cmd.resp[0]; 136 137 return err; 138 } 139 140 /** 141 * rsi_handle_interrupt() - This function is called upon the occurrence 142 * of an interrupt. 143 * @function: Pointer to the sdio_func structure. 144 * 145 * Return: None. 146 */ 147 static void rsi_handle_interrupt(struct sdio_func *function) 148 { 149 struct rsi_hw *adapter = sdio_get_drvdata(function); 150 struct rsi_91x_sdiodev *dev = 151 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 152 153 if (adapter->priv->fsm_state == FSM_FW_NOT_LOADED) 154 return; 155 156 rsi_set_event(&dev->rx_thread.event); 157 } 158 159 /** 160 * rsi_reset_card() - This function resets and re-initializes the card. 161 * @pfunction: Pointer to the sdio_func structure. 162 * 163 * Return: None. 164 */ 165 static void rsi_reset_card(struct sdio_func *pfunction) 166 { 167 int ret = 0; 168 int err; 169 struct mmc_card *card = pfunction->card; 170 struct mmc_host *host = card->host; 171 u8 cmd52_resp; 172 u32 clock, resp, i; 173 u16 rca; 174 175 /* Reset 9110 chip */ 176 ret = rsi_cmd52writebyte(pfunction->card, 177 SDIO_CCCR_ABORT, 178 (1 << 3)); 179 180 /* Card will not send any response as it is getting reset immediately 181 * Hence expect a timeout status from host controller 182 */ 183 if (ret != -ETIMEDOUT) 184 rsi_dbg(ERR_ZONE, "%s: Reset failed : %d\n", __func__, ret); 185 186 /* Wait for few milli seconds to get rid of residue charges if any */ 187 msleep(20); 188 189 /* Initialize the SDIO card */ 190 host->ios.chip_select = MMC_CS_DONTCARE; 191 host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN; 192 host->ios.power_mode = MMC_POWER_UP; 193 host->ios.bus_width = MMC_BUS_WIDTH_1; 194 host->ios.timing = MMC_TIMING_LEGACY; 195 host->ops->set_ios(host, &host->ios); 196 197 /* 198 * This delay should be sufficient to allow the power supply 199 * to reach the minimum voltage. 200 */ 201 msleep(20); 202 203 host->ios.clock = host->f_min; 204 host->ios.power_mode = MMC_POWER_ON; 205 host->ops->set_ios(host, &host->ios); 206 207 /* 208 * This delay must be at least 74 clock sizes, or 1 ms, or the 209 * time required to reach a stable voltage. 210 */ 211 msleep(20); 212 213 /* Issue CMD0. Goto idle state */ 214 host->ios.chip_select = MMC_CS_HIGH; 215 host->ops->set_ios(host, &host->ios); 216 msleep(20); 217 err = rsi_issue_sdiocommand(pfunction, 218 MMC_GO_IDLE_STATE, 219 0, 220 (MMC_RSP_NONE | MMC_CMD_BC), 221 NULL); 222 host->ios.chip_select = MMC_CS_DONTCARE; 223 host->ops->set_ios(host, &host->ios); 224 msleep(20); 225 host->use_spi_crc = 0; 226 227 if (err) 228 rsi_dbg(ERR_ZONE, "%s: CMD0 failed : %d\n", __func__, err); 229 230 /* Issue CMD5, arg = 0 */ 231 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND, 0, 232 (MMC_RSP_R4 | MMC_CMD_BCR), &resp); 233 if (err) 234 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n", 235 __func__, err); 236 card->ocr = resp; 237 /* Issue CMD5, arg = ocr. Wait till card is ready */ 238 for (i = 0; i < 100; i++) { 239 err = rsi_issue_sdiocommand(pfunction, SD_IO_SEND_OP_COND, 240 card->ocr, 241 (MMC_RSP_R4 | MMC_CMD_BCR), &resp); 242 if (err) { 243 rsi_dbg(ERR_ZONE, "%s: CMD5 failed : %d\n", 244 __func__, err); 245 break; 246 } 247 248 if (resp & MMC_CARD_BUSY) 249 break; 250 msleep(20); 251 } 252 253 if ((i == 100) || (err)) { 254 rsi_dbg(ERR_ZONE, "%s: card in not ready : %d %d\n", 255 __func__, i, err); 256 return; 257 } 258 259 /* Issue CMD3, get RCA */ 260 err = rsi_issue_sdiocommand(pfunction, 261 SD_SEND_RELATIVE_ADDR, 262 0, 263 (MMC_RSP_R6 | MMC_CMD_BCR), 264 &resp); 265 if (err) { 266 rsi_dbg(ERR_ZONE, "%s: CMD3 failed : %d\n", __func__, err); 267 return; 268 } 269 rca = resp >> 16; 270 host->ios.bus_mode = MMC_BUSMODE_PUSHPULL; 271 host->ops->set_ios(host, &host->ios); 272 273 /* Issue CMD7, select card */ 274 err = rsi_issue_sdiocommand(pfunction, 275 MMC_SELECT_CARD, 276 (rca << 16), 277 (MMC_RSP_R1 | MMC_CMD_AC), 278 NULL); 279 if (err) { 280 rsi_dbg(ERR_ZONE, "%s: CMD7 failed : %d\n", __func__, err); 281 return; 282 } 283 284 /* Enable high speed */ 285 if (card->host->caps & MMC_CAP_SD_HIGHSPEED) { 286 rsi_dbg(ERR_ZONE, "%s: Set high speed mode\n", __func__); 287 err = rsi_cmd52readbyte(card, SDIO_CCCR_SPEED, &cmd52_resp); 288 if (err) { 289 rsi_dbg(ERR_ZONE, "%s: CCCR speed reg read failed: %d\n", 290 __func__, err); 291 } else { 292 err = rsi_cmd52writebyte(card, 293 SDIO_CCCR_SPEED, 294 (cmd52_resp | SDIO_SPEED_EHS)); 295 if (err) { 296 rsi_dbg(ERR_ZONE, 297 "%s: CCR speed regwrite failed %d\n", 298 __func__, err); 299 return; 300 } 301 host->ios.timing = MMC_TIMING_SD_HS; 302 host->ops->set_ios(host, &host->ios); 303 } 304 } 305 306 /* Set clock */ 307 if (mmc_card_hs(card)) 308 clock = 50000000; 309 else 310 clock = card->cis.max_dtr; 311 312 if (clock > host->f_max) 313 clock = host->f_max; 314 315 host->ios.clock = clock; 316 host->ops->set_ios(host, &host->ios); 317 318 if (card->host->caps & MMC_CAP_4_BIT_DATA) { 319 /* CMD52: Set bus width & disable card detect resistor */ 320 err = rsi_cmd52writebyte(card, 321 SDIO_CCCR_IF, 322 (SDIO_BUS_CD_DISABLE | 323 SDIO_BUS_WIDTH_4BIT)); 324 if (err) { 325 rsi_dbg(ERR_ZONE, "%s: Set bus mode failed : %d\n", 326 __func__, err); 327 return; 328 } 329 host->ios.bus_width = MMC_BUS_WIDTH_4; 330 host->ops->set_ios(host, &host->ios); 331 } 332 } 333 334 /** 335 * rsi_setclock() - This function sets the clock frequency. 336 * @adapter: Pointer to the adapter structure. 337 * @freq: Clock frequency. 338 * 339 * Return: None. 340 */ 341 static void rsi_setclock(struct rsi_hw *adapter, u32 freq) 342 { 343 struct rsi_91x_sdiodev *dev = 344 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 345 struct mmc_host *host = dev->pfunction->card->host; 346 u32 clock; 347 348 clock = freq * 1000; 349 if (clock > host->f_max) 350 clock = host->f_max; 351 host->ios.clock = clock; 352 host->ops->set_ios(host, &host->ios); 353 } 354 355 /** 356 * rsi_setblocklength() - This function sets the host block length. 357 * @adapter: Pointer to the adapter structure. 358 * @length: Block length to be set. 359 * 360 * Return: status: 0 on success, -1 on failure. 361 */ 362 static int rsi_setblocklength(struct rsi_hw *adapter, u32 length) 363 { 364 struct rsi_91x_sdiodev *dev = 365 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 366 int status; 367 rsi_dbg(INIT_ZONE, "%s: Setting the block length\n", __func__); 368 369 status = sdio_set_block_size(dev->pfunction, length); 370 dev->pfunction->max_blksize = 256; 371 adapter->block_size = dev->pfunction->max_blksize; 372 373 rsi_dbg(INFO_ZONE, 374 "%s: Operational blk length is %d\n", __func__, length); 375 return status; 376 } 377 378 /** 379 * rsi_setupcard() - This function queries and sets the card's features. 380 * @adapter: Pointer to the adapter structure. 381 * 382 * Return: status: 0 on success, -1 on failure. 383 */ 384 static int rsi_setupcard(struct rsi_hw *adapter) 385 { 386 struct rsi_91x_sdiodev *dev = 387 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 388 int status = 0; 389 390 rsi_setclock(adapter, 50000); 391 392 dev->tx_blk_size = 256; 393 status = rsi_setblocklength(adapter, dev->tx_blk_size); 394 if (status) 395 rsi_dbg(ERR_ZONE, 396 "%s: Unable to set block length\n", __func__); 397 return status; 398 } 399 400 /** 401 * rsi_sdio_read_register() - This function reads one byte of information 402 * from a register. 403 * @adapter: Pointer to the adapter structure. 404 * @addr: Address of the register. 405 * @data: Pointer to the data that stores the data read. 406 * 407 * Return: 0 on success, -1 on failure. 408 */ 409 int rsi_sdio_read_register(struct rsi_hw *adapter, 410 u32 addr, 411 u8 *data) 412 { 413 struct rsi_91x_sdiodev *dev = 414 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 415 u8 fun_num = 0; 416 int status; 417 418 if (likely(dev->sdio_irq_task != current)) 419 sdio_claim_host(dev->pfunction); 420 421 if (fun_num == 0) 422 *data = sdio_f0_readb(dev->pfunction, addr, &status); 423 else 424 *data = sdio_readb(dev->pfunction, addr, &status); 425 426 if (likely(dev->sdio_irq_task != current)) 427 sdio_release_host(dev->pfunction); 428 429 return status; 430 } 431 432 /** 433 * rsi_sdio_write_register() - This function writes one byte of information 434 * into a register. 435 * @adapter: Pointer to the adapter structure. 436 * @function: Function Number. 437 * @addr: Address of the register. 438 * @data: Pointer to the data tha has to be written. 439 * 440 * Return: 0 on success, -1 on failure. 441 */ 442 int rsi_sdio_write_register(struct rsi_hw *adapter, 443 u8 function, 444 u32 addr, 445 u8 *data) 446 { 447 struct rsi_91x_sdiodev *dev = 448 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 449 int status = 0; 450 451 if (likely(dev->sdio_irq_task != current)) 452 sdio_claim_host(dev->pfunction); 453 454 if (function == 0) 455 sdio_f0_writeb(dev->pfunction, *data, addr, &status); 456 else 457 sdio_writeb(dev->pfunction, *data, addr, &status); 458 459 if (likely(dev->sdio_irq_task != current)) 460 sdio_release_host(dev->pfunction); 461 462 return status; 463 } 464 465 /** 466 * rsi_sdio_ack_intr() - This function acks the interrupt received. 467 * @adapter: Pointer to the adapter structure. 468 * @int_bit: Interrupt bit to write into register. 469 * 470 * Return: None. 471 */ 472 void rsi_sdio_ack_intr(struct rsi_hw *adapter, u8 int_bit) 473 { 474 int status; 475 status = rsi_sdio_write_register(adapter, 476 1, 477 (SDIO_FUN1_INTR_CLR_REG | 478 RSI_SD_REQUEST_MASTER), 479 &int_bit); 480 if (status) 481 rsi_dbg(ERR_ZONE, "%s: unable to send ack\n", __func__); 482 } 483 484 485 486 /** 487 * rsi_sdio_read_register_multiple() - This function read multiple bytes of 488 * information from the SD card. 489 * @adapter: Pointer to the adapter structure. 490 * @addr: Address of the register. 491 * @count: Number of multiple bytes to be read. 492 * @data: Pointer to the read data. 493 * 494 * Return: 0 on success, -1 on failure. 495 */ 496 static int rsi_sdio_read_register_multiple(struct rsi_hw *adapter, 497 u32 addr, 498 u8 *data, 499 u16 count) 500 { 501 struct rsi_91x_sdiodev *dev = 502 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 503 u32 status; 504 505 if (likely(dev->sdio_irq_task != current)) 506 sdio_claim_host(dev->pfunction); 507 508 status = sdio_readsb(dev->pfunction, data, addr, count); 509 510 if (likely(dev->sdio_irq_task != current)) 511 sdio_release_host(dev->pfunction); 512 513 if (status != 0) 514 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 read failed\n", __func__); 515 return status; 516 } 517 518 /** 519 * rsi_sdio_write_register_multiple() - This function writes multiple bytes of 520 * information to the SD card. 521 * @adapter: Pointer to the adapter structure. 522 * @addr: Address of the register. 523 * @data: Pointer to the data that has to be written. 524 * @count: Number of multiple bytes to be written. 525 * 526 * Return: 0 on success, -1 on failure. 527 */ 528 int rsi_sdio_write_register_multiple(struct rsi_hw *adapter, 529 u32 addr, 530 u8 *data, 531 u16 count) 532 { 533 struct rsi_91x_sdiodev *dev = 534 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 535 int status; 536 537 if (dev->write_fail > 1) { 538 rsi_dbg(ERR_ZONE, "%s: Stopping card writes\n", __func__); 539 return 0; 540 } else if (dev->write_fail == 1) { 541 /** 542 * Assuming it is a CRC failure, we want to allow another 543 * card write 544 */ 545 rsi_dbg(ERR_ZONE, "%s: Continue card writes\n", __func__); 546 dev->write_fail++; 547 } 548 549 if (likely(dev->sdio_irq_task != current)) 550 sdio_claim_host(dev->pfunction); 551 552 status = sdio_writesb(dev->pfunction, addr, data, count); 553 554 if (likely(dev->sdio_irq_task != current)) 555 sdio_release_host(dev->pfunction); 556 557 if (status) { 558 rsi_dbg(ERR_ZONE, "%s: Synch Cmd53 write failed %d\n", 559 __func__, status); 560 dev->write_fail = 2; 561 } else { 562 memcpy(dev->prev_desc, data, FRAME_DESC_SZ); 563 } 564 return status; 565 } 566 567 static int rsi_sdio_load_data_master_write(struct rsi_hw *adapter, 568 u32 base_address, 569 u32 instructions_sz, 570 u16 block_size, 571 u8 *ta_firmware) 572 { 573 u32 num_blocks, offset, i; 574 u16 msb_address, lsb_address; 575 u8 *temp_buf; 576 int status; 577 578 num_blocks = instructions_sz / block_size; 579 msb_address = base_address >> 16; 580 581 rsi_dbg(INFO_ZONE, "ins_size: %d, num_blocks: %d\n", 582 instructions_sz, num_blocks); 583 584 temp_buf = kmalloc(block_size, GFP_KERNEL); 585 if (!temp_buf) 586 return -ENOMEM; 587 588 /* Loading DM ms word in the sdio slave */ 589 status = rsi_sdio_master_access_msword(adapter, msb_address); 590 if (status < 0) { 591 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__); 592 goto out_free; 593 } 594 595 for (offset = 0, i = 0; i < num_blocks; i++, offset += block_size) { 596 memcpy(temp_buf, ta_firmware + offset, block_size); 597 lsb_address = (u16)base_address; 598 status = rsi_sdio_write_register_multiple 599 (adapter, 600 lsb_address | RSI_SD_REQUEST_MASTER, 601 temp_buf, block_size); 602 if (status < 0) { 603 rsi_dbg(ERR_ZONE, "%s: failed to write\n", __func__); 604 goto out_free; 605 } 606 rsi_dbg(INFO_ZONE, "%s: loading block: %d\n", __func__, i); 607 base_address += block_size; 608 609 if ((base_address >> 16) != msb_address) { 610 msb_address += 1; 611 612 /* Loading DM ms word in the sdio slave */ 613 status = rsi_sdio_master_access_msword(adapter, 614 msb_address); 615 if (status < 0) { 616 rsi_dbg(ERR_ZONE, 617 "%s: Unable to set ms word reg\n", 618 __func__); 619 goto out_free; 620 } 621 } 622 } 623 624 if (instructions_sz % block_size) { 625 memset(temp_buf, 0, block_size); 626 memcpy(temp_buf, ta_firmware + offset, 627 instructions_sz % block_size); 628 lsb_address = (u16)base_address; 629 status = rsi_sdio_write_register_multiple 630 (adapter, 631 lsb_address | RSI_SD_REQUEST_MASTER, 632 temp_buf, 633 instructions_sz % block_size); 634 if (status < 0) 635 goto out_free; 636 rsi_dbg(INFO_ZONE, 637 "Written Last Block in Address 0x%x Successfully\n", 638 offset | RSI_SD_REQUEST_MASTER); 639 } 640 641 status = 0; 642 out_free: 643 kfree(temp_buf); 644 return status; 645 } 646 647 #define FLASH_SIZE_ADDR 0x04000016 648 static int rsi_sdio_master_reg_read(struct rsi_hw *adapter, u32 addr, 649 u32 *read_buf, u16 size) 650 { 651 u32 addr_on_bus, *data; 652 u16 ms_addr; 653 int status; 654 655 data = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL); 656 if (!data) 657 return -ENOMEM; 658 659 ms_addr = (addr >> 16); 660 status = rsi_sdio_master_access_msword(adapter, ms_addr); 661 if (status < 0) { 662 rsi_dbg(ERR_ZONE, 663 "%s: Unable to set ms word to common reg\n", 664 __func__); 665 goto err; 666 } 667 addr &= 0xFFFF; 668 669 addr_on_bus = (addr & 0xFF000000); 670 if ((addr_on_bus == (FLASH_SIZE_ADDR & 0xFF000000)) || 671 (addr_on_bus == 0x0)) 672 addr_on_bus = (addr & ~(0x3)); 673 else 674 addr_on_bus = addr; 675 676 /* Bring TA out of reset */ 677 status = rsi_sdio_read_register_multiple 678 (adapter, 679 (addr_on_bus | RSI_SD_REQUEST_MASTER), 680 (u8 *)data, 4); 681 if (status < 0) { 682 rsi_dbg(ERR_ZONE, "%s: AHB register read failed\n", __func__); 683 goto err; 684 } 685 if (size == 2) { 686 if ((addr & 0x3) == 0) 687 *read_buf = *data; 688 else 689 *read_buf = (*data >> 16); 690 *read_buf = (*read_buf & 0xFFFF); 691 } else if (size == 1) { 692 if ((addr & 0x3) == 0) 693 *read_buf = *data; 694 else if ((addr & 0x3) == 1) 695 *read_buf = (*data >> 8); 696 else if ((addr & 0x3) == 2) 697 *read_buf = (*data >> 16); 698 else 699 *read_buf = (*data >> 24); 700 *read_buf = (*read_buf & 0xFF); 701 } else { 702 *read_buf = *data; 703 } 704 705 err: 706 kfree(data); 707 return status; 708 } 709 710 static int rsi_sdio_master_reg_write(struct rsi_hw *adapter, 711 unsigned long addr, 712 unsigned long data, u16 size) 713 { 714 unsigned long *data_aligned; 715 int status; 716 717 data_aligned = kzalloc(RSI_MASTER_REG_BUF_SIZE, GFP_KERNEL); 718 if (!data_aligned) 719 return -ENOMEM; 720 721 if (size == 2) { 722 *data_aligned = ((data << 16) | (data & 0xFFFF)); 723 } else if (size == 1) { 724 u32 temp_data = data & 0xFF; 725 726 *data_aligned = ((temp_data << 24) | (temp_data << 16) | 727 (temp_data << 8) | temp_data); 728 } else { 729 *data_aligned = data; 730 } 731 size = 4; 732 733 status = rsi_sdio_master_access_msword(adapter, (addr >> 16)); 734 if (status < 0) { 735 rsi_dbg(ERR_ZONE, 736 "%s: Unable to set ms word to common reg\n", 737 __func__); 738 kfree(data_aligned); 739 return -EIO; 740 } 741 addr = addr & 0xFFFF; 742 743 /* Bring TA out of reset */ 744 status = rsi_sdio_write_register_multiple 745 (adapter, 746 (addr | RSI_SD_REQUEST_MASTER), 747 (u8 *)data_aligned, size); 748 if (status < 0) 749 rsi_dbg(ERR_ZONE, 750 "%s: Unable to do AHB reg write\n", __func__); 751 752 kfree(data_aligned); 753 return status; 754 } 755 756 /** 757 * rsi_sdio_host_intf_write_pkt() - This function writes the packet to device. 758 * @adapter: Pointer to the adapter structure. 759 * @pkt: Pointer to the data to be written on to the device. 760 * @len: length of the data to be written on to the device. 761 * 762 * Return: 0 on success, -1 on failure. 763 */ 764 static int rsi_sdio_host_intf_write_pkt(struct rsi_hw *adapter, 765 u8 *pkt, 766 u32 len) 767 { 768 struct rsi_91x_sdiodev *dev = 769 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 770 u32 block_size = dev->tx_blk_size; 771 u32 num_blocks, address, length; 772 u32 queueno; 773 int status; 774 775 queueno = ((pkt[1] >> 4) & 0xf); 776 if (queueno == RSI_BT_MGMT_Q || queueno == RSI_BT_DATA_Q) 777 queueno = RSI_BT_Q; 778 779 num_blocks = len / block_size; 780 781 if (len % block_size) 782 num_blocks++; 783 784 address = (num_blocks * block_size | (queueno << 12)); 785 length = num_blocks * block_size; 786 787 status = rsi_sdio_write_register_multiple(adapter, 788 address, 789 (u8 *)pkt, 790 length); 791 if (status) 792 rsi_dbg(ERR_ZONE, "%s: Unable to write onto the card: %d\n", 793 __func__, status); 794 rsi_dbg(DATA_TX_ZONE, "%s: Successfully written onto card\n", __func__); 795 return status; 796 } 797 798 /** 799 * rsi_sdio_host_intf_read_pkt() - This function reads the packet 800 * from the device. 801 * @adapter: Pointer to the adapter data structure. 802 * @pkt: Pointer to the packet data to be read from the the device. 803 * @length: Length of the data to be read from the device. 804 * 805 * Return: 0 on success, -1 on failure. 806 */ 807 int rsi_sdio_host_intf_read_pkt(struct rsi_hw *adapter, 808 u8 *pkt, 809 u32 length) 810 { 811 int status = -EINVAL; 812 813 if (!length) { 814 rsi_dbg(ERR_ZONE, "%s: Pkt size is zero\n", __func__); 815 return status; 816 } 817 818 status = rsi_sdio_read_register_multiple(adapter, 819 length, 820 (u8 *)pkt, 821 length); /*num of bytes*/ 822 823 if (status) 824 rsi_dbg(ERR_ZONE, "%s: Failed to read frame: %d\n", __func__, 825 status); 826 return status; 827 } 828 829 /** 830 * rsi_init_sdio_interface() - This function does init specific to SDIO. 831 * 832 * @adapter: Pointer to the adapter data structure. 833 * @pfunction: Pointer to the sdio_func structure. 834 * 835 * Return: 0 on success, -1 on failure. 836 */ 837 static int rsi_init_sdio_interface(struct rsi_hw *adapter, 838 struct sdio_func *pfunction) 839 { 840 struct rsi_91x_sdiodev *rsi_91x_dev; 841 int status; 842 843 rsi_91x_dev = kzalloc(sizeof(*rsi_91x_dev), GFP_KERNEL); 844 if (!rsi_91x_dev) 845 return -ENOMEM; 846 847 adapter->rsi_dev = rsi_91x_dev; 848 849 sdio_claim_host(pfunction); 850 851 pfunction->enable_timeout = 100; 852 status = sdio_enable_func(pfunction); 853 if (status) { 854 rsi_dbg(ERR_ZONE, "%s: Failed to enable interface\n", __func__); 855 sdio_release_host(pfunction); 856 return status; 857 } 858 859 rsi_dbg(INIT_ZONE, "%s: Enabled the interface\n", __func__); 860 861 rsi_91x_dev->pfunction = pfunction; 862 adapter->device = &pfunction->dev; 863 864 sdio_set_drvdata(pfunction, adapter); 865 866 status = rsi_setupcard(adapter); 867 if (status) { 868 rsi_dbg(ERR_ZONE, "%s: Failed to setup card\n", __func__); 869 goto fail; 870 } 871 872 rsi_dbg(INIT_ZONE, "%s: Setup card successfully\n", __func__); 873 874 status = rsi_init_sdio_slave_regs(adapter); 875 if (status) { 876 rsi_dbg(ERR_ZONE, "%s: Failed to init slave regs\n", __func__); 877 goto fail; 878 } 879 sdio_release_host(pfunction); 880 881 adapter->determine_event_timeout = rsi_sdio_determine_event_timeout; 882 adapter->check_hw_queue_status = rsi_sdio_check_buffer_status; 883 884 #ifdef CONFIG_RSI_DEBUGFS 885 adapter->num_debugfs_entries = MAX_DEBUGFS_ENTRIES; 886 #endif 887 return 0; 888 fail: 889 sdio_disable_func(pfunction); 890 sdio_release_host(pfunction); 891 return status; 892 } 893 894 static int rsi_sdio_reinit_device(struct rsi_hw *adapter) 895 { 896 struct rsi_91x_sdiodev *sdev = adapter->rsi_dev; 897 struct sdio_func *pfunction = sdev->pfunction; 898 int ii; 899 900 for (ii = 0; ii < NUM_SOFT_QUEUES; ii++) 901 skb_queue_purge(&adapter->priv->tx_queue[ii]); 902 903 /* Initialize device again */ 904 sdio_claim_host(pfunction); 905 906 sdio_release_irq(pfunction); 907 rsi_reset_card(pfunction); 908 909 sdio_enable_func(pfunction); 910 rsi_setupcard(adapter); 911 rsi_init_sdio_slave_regs(adapter); 912 sdio_claim_irq(pfunction, rsi_handle_interrupt); 913 rsi_hal_device_init(adapter); 914 915 sdio_release_host(pfunction); 916 917 return 0; 918 } 919 920 static int rsi_sdio_ta_reset(struct rsi_hw *adapter) 921 { 922 int status; 923 u32 addr; 924 u8 *data; 925 926 data = kzalloc(RSI_9116_REG_SIZE, GFP_KERNEL); 927 if (!data) 928 return -ENOMEM; 929 930 status = rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR); 931 if (status < 0) { 932 rsi_dbg(ERR_ZONE, 933 "Unable to set ms word to common reg\n"); 934 goto err; 935 } 936 937 rsi_dbg(INIT_ZONE, "%s: Bring TA out of reset\n", __func__); 938 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data); 939 addr = TA_HOLD_THREAD_REG | RSI_SD_REQUEST_MASTER; 940 status = rsi_sdio_write_register_multiple(adapter, addr, 941 (u8 *)data, 942 RSI_9116_REG_SIZE); 943 if (status < 0) { 944 rsi_dbg(ERR_ZONE, "Unable to hold TA threads\n"); 945 goto err; 946 } 947 948 put_unaligned_le32(TA_SOFT_RST_CLR, data); 949 addr = TA_SOFT_RESET_REG | RSI_SD_REQUEST_MASTER; 950 status = rsi_sdio_write_register_multiple(adapter, addr, 951 (u8 *)data, 952 RSI_9116_REG_SIZE); 953 if (status < 0) { 954 rsi_dbg(ERR_ZONE, "Unable to get TA out of reset\n"); 955 goto err; 956 } 957 958 put_unaligned_le32(TA_PC_ZERO, data); 959 addr = TA_TH0_PC_REG | RSI_SD_REQUEST_MASTER; 960 status = rsi_sdio_write_register_multiple(adapter, addr, 961 (u8 *)data, 962 RSI_9116_REG_SIZE); 963 if (status < 0) { 964 rsi_dbg(ERR_ZONE, "Unable to Reset TA PC value\n"); 965 status = -EINVAL; 966 goto err; 967 } 968 969 put_unaligned_le32(TA_RELEASE_THREAD_VALUE, data); 970 addr = TA_RELEASE_THREAD_REG | RSI_SD_REQUEST_MASTER; 971 status = rsi_sdio_write_register_multiple(adapter, addr, 972 (u8 *)data, 973 RSI_9116_REG_SIZE); 974 if (status < 0) { 975 rsi_dbg(ERR_ZONE, "Unable to release TA threads\n"); 976 goto err; 977 } 978 979 status = rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR); 980 if (status < 0) { 981 rsi_dbg(ERR_ZONE, "Unable to set ms word to common reg\n"); 982 goto err; 983 } 984 rsi_dbg(INIT_ZONE, "***** TA Reset done *****\n"); 985 986 err: 987 kfree(data); 988 return status; 989 } 990 991 static struct rsi_host_intf_ops sdio_host_intf_ops = { 992 .write_pkt = rsi_sdio_host_intf_write_pkt, 993 .read_pkt = rsi_sdio_host_intf_read_pkt, 994 .master_access_msword = rsi_sdio_master_access_msword, 995 .read_reg_multiple = rsi_sdio_read_register_multiple, 996 .write_reg_multiple = rsi_sdio_write_register_multiple, 997 .master_reg_read = rsi_sdio_master_reg_read, 998 .master_reg_write = rsi_sdio_master_reg_write, 999 .load_data_master_write = rsi_sdio_load_data_master_write, 1000 .reinit_device = rsi_sdio_reinit_device, 1001 .ta_reset = rsi_sdio_ta_reset, 1002 }; 1003 1004 /** 1005 * rsi_probe() - This function is called by kernel when the driver provided 1006 * Vendor and device IDs are matched. All the initialization 1007 * work is done here. 1008 * @pfunction: Pointer to the sdio_func structure. 1009 * @id: Pointer to sdio_device_id structure. 1010 * 1011 * Return: 0 on success, 1 on failure. 1012 */ 1013 static int rsi_probe(struct sdio_func *pfunction, 1014 const struct sdio_device_id *id) 1015 { 1016 struct rsi_hw *adapter; 1017 struct rsi_91x_sdiodev *sdev; 1018 int status = -EINVAL; 1019 1020 rsi_dbg(INIT_ZONE, "%s: Init function called\n", __func__); 1021 1022 adapter = rsi_91x_init(dev_oper_mode); 1023 if (!adapter) { 1024 rsi_dbg(ERR_ZONE, "%s: Failed to init os intf ops\n", 1025 __func__); 1026 return -EINVAL; 1027 } 1028 adapter->rsi_host_intf = RSI_HOST_INTF_SDIO; 1029 adapter->host_intf_ops = &sdio_host_intf_ops; 1030 1031 if (rsi_init_sdio_interface(adapter, pfunction)) { 1032 rsi_dbg(ERR_ZONE, "%s: Failed to init sdio interface\n", 1033 __func__); 1034 status = -EIO; 1035 goto fail_free_adapter; 1036 } 1037 1038 if (pfunction->device == SDIO_DEVICE_ID_RSI_9113) { 1039 rsi_dbg(ERR_ZONE, "%s: 9113 module detected\n", __func__); 1040 adapter->device_model = RSI_DEV_9113; 1041 } else if (pfunction->device == SDIO_DEVICE_ID_RSI_9116) { 1042 rsi_dbg(ERR_ZONE, "%s: 9116 module detected\n", __func__); 1043 adapter->device_model = RSI_DEV_9116; 1044 } else { 1045 rsi_dbg(ERR_ZONE, 1046 "%s: Unsupported RSI device id 0x%x\n", __func__, 1047 pfunction->device); 1048 goto fail_free_adapter; 1049 } 1050 1051 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev; 1052 rsi_init_event(&sdev->rx_thread.event); 1053 status = rsi_create_kthread(adapter->priv, &sdev->rx_thread, 1054 rsi_sdio_rx_thread, "SDIO-RX-Thread"); 1055 if (status) { 1056 rsi_dbg(ERR_ZONE, "%s: Unable to init rx thrd\n", __func__); 1057 goto fail_kill_thread; 1058 } 1059 1060 sdio_claim_host(pfunction); 1061 if (sdio_claim_irq(pfunction, rsi_handle_interrupt)) { 1062 rsi_dbg(ERR_ZONE, "%s: Failed to request IRQ\n", __func__); 1063 sdio_release_host(pfunction); 1064 status = -EIO; 1065 goto fail_claim_irq; 1066 } 1067 sdio_release_host(pfunction); 1068 rsi_dbg(INIT_ZONE, "%s: Registered Interrupt handler\n", __func__); 1069 1070 if (rsi_hal_device_init(adapter)) { 1071 rsi_dbg(ERR_ZONE, "%s: Failed in device init\n", __func__); 1072 status = -EINVAL; 1073 goto fail_dev_init; 1074 } 1075 rsi_dbg(INFO_ZONE, "===> RSI Device Init Done <===\n"); 1076 1077 if (rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR)) { 1078 rsi_dbg(ERR_ZONE, "%s: Unable to set ms word reg\n", __func__); 1079 status = -EIO; 1080 goto fail_dev_init; 1081 } 1082 1083 adapter->priv->hibernate_resume = false; 1084 adapter->priv->reinit_hw = false; 1085 return 0; 1086 1087 fail_dev_init: 1088 sdio_claim_host(pfunction); 1089 sdio_release_irq(pfunction); 1090 sdio_release_host(pfunction); 1091 fail_claim_irq: 1092 rsi_kill_thread(&sdev->rx_thread); 1093 fail_kill_thread: 1094 sdio_claim_host(pfunction); 1095 sdio_disable_func(pfunction); 1096 sdio_release_host(pfunction); 1097 fail_free_adapter: 1098 rsi_91x_deinit(adapter); 1099 rsi_dbg(ERR_ZONE, "%s: Failed in probe...Exiting\n", __func__); 1100 return status; 1101 } 1102 1103 static void ulp_read_write(struct rsi_hw *adapter, u16 addr, u32 data, 1104 u16 len_in_bits) 1105 { 1106 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG1, 1107 ((addr << 6) | ((data >> 16) & 0xffff)), 2); 1108 rsi_sdio_master_reg_write(adapter, RSI_GSPI_DATA_REG0, 1109 (data & 0xffff), 2); 1110 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG0, 1111 RSI_GSPI_CTRL_REG0_VALUE, 2); 1112 rsi_sdio_master_reg_write(adapter, RSI_GSPI_CTRL_REG1, 1113 ((len_in_bits - 1) | RSI_GSPI_TRIG), 2); 1114 msleep(20); 1115 } 1116 1117 /*This function resets and re-initializes the chip.*/ 1118 static void rsi_reset_chip(struct rsi_hw *adapter) 1119 { 1120 u8 *data; 1121 u8 sdio_interrupt_status = 0; 1122 u8 request = 1; 1123 int ret; 1124 1125 data = kzalloc(sizeof(u32), GFP_KERNEL); 1126 if (!data) 1127 return; 1128 1129 rsi_dbg(INFO_ZONE, "Writing disable to wakeup register\n"); 1130 ret = rsi_sdio_write_register(adapter, 0, SDIO_WAKEUP_REG, &request); 1131 if (ret < 0) { 1132 rsi_dbg(ERR_ZONE, 1133 "%s: Failed to write SDIO wakeup register\n", __func__); 1134 goto err; 1135 } 1136 msleep(20); 1137 ret = rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER, 1138 &sdio_interrupt_status); 1139 if (ret < 0) { 1140 rsi_dbg(ERR_ZONE, "%s: Failed to Read Intr Status Register\n", 1141 __func__); 1142 goto err; 1143 } 1144 rsi_dbg(INFO_ZONE, "%s: Intr Status Register value = %d\n", 1145 __func__, sdio_interrupt_status); 1146 1147 /* Put Thread-Arch processor on hold */ 1148 if (rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR)) { 1149 rsi_dbg(ERR_ZONE, 1150 "%s: Unable to set ms word to common reg\n", 1151 __func__); 1152 goto err; 1153 } 1154 1155 put_unaligned_le32(TA_HOLD_THREAD_VALUE, data); 1156 if (rsi_sdio_write_register_multiple(adapter, TA_HOLD_THREAD_REG | 1157 RSI_SD_REQUEST_MASTER, 1158 data, 4)) { 1159 rsi_dbg(ERR_ZONE, 1160 "%s: Unable to hold Thread-Arch processor threads\n", 1161 __func__); 1162 goto err; 1163 } 1164 1165 /* This msleep will ensure Thread-Arch processor to go to hold 1166 * and any pending dma transfers to rf spi in device to finish. 1167 */ 1168 msleep(100); 1169 if (adapter->device_model != RSI_DEV_9116) { 1170 ulp_read_write(adapter, RSI_ULP_RESET_REG, RSI_ULP_WRITE_0, 32); 1171 ulp_read_write(adapter, 1172 RSI_WATCH_DOG_TIMER_1, RSI_ULP_WRITE_2, 32); 1173 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_2, RSI_ULP_WRITE_0, 1174 32); 1175 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_1, 1176 RSI_ULP_WRITE_50, 32); 1177 ulp_read_write(adapter, RSI_WATCH_DOG_DELAY_TIMER_2, 1178 RSI_ULP_WRITE_0, 32); 1179 ulp_read_write(adapter, RSI_WATCH_DOG_TIMER_ENABLE, 1180 RSI_ULP_TIMER_ENABLE, 32); 1181 } else { 1182 if ((rsi_sdio_master_reg_write(adapter, 1183 NWP_WWD_INTERRUPT_TIMER, 1184 NWP_WWD_INT_TIMER_CLKS, 1185 RSI_9116_REG_SIZE)) < 0) { 1186 rsi_dbg(ERR_ZONE, "Failed to write to intr timer\n"); 1187 } 1188 if ((rsi_sdio_master_reg_write(adapter, 1189 NWP_WWD_SYSTEM_RESET_TIMER, 1190 NWP_WWD_SYS_RESET_TIMER_CLKS, 1191 RSI_9116_REG_SIZE)) < 0) { 1192 rsi_dbg(ERR_ZONE, 1193 "Failed to write to system reset timer\n"); 1194 } 1195 if ((rsi_sdio_master_reg_write(adapter, 1196 NWP_WWD_MODE_AND_RSTART, 1197 NWP_WWD_TIMER_DISABLE, 1198 RSI_9116_REG_SIZE)) < 0) { 1199 rsi_dbg(ERR_ZONE, 1200 "Failed to write to mode and restart\n"); 1201 } 1202 rsi_dbg(ERR_ZONE, "***** Watch Dog Reset Successful *****\n"); 1203 } 1204 /* This msleep will be sufficient for the ulp 1205 * read write operations to complete for chip reset. 1206 */ 1207 msleep(500); 1208 err: 1209 kfree(data); 1210 return; 1211 } 1212 1213 /** 1214 * rsi_disconnect() - This function performs the reverse of the probe function. 1215 * @pfunction: Pointer to the sdio_func structure. 1216 * 1217 * Return: void. 1218 */ 1219 static void rsi_disconnect(struct sdio_func *pfunction) 1220 { 1221 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1222 struct rsi_91x_sdiodev *dev; 1223 1224 if (!adapter) 1225 return; 1226 1227 dev = (struct rsi_91x_sdiodev *)adapter->rsi_dev; 1228 1229 rsi_kill_thread(&dev->rx_thread); 1230 sdio_claim_host(pfunction); 1231 sdio_release_irq(pfunction); 1232 sdio_release_host(pfunction); 1233 mdelay(10); 1234 1235 rsi_mac80211_detach(adapter); 1236 mdelay(10); 1237 1238 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 && 1239 adapter->priv->bt_adapter) { 1240 rsi_bt_ops.detach(adapter->priv->bt_adapter); 1241 adapter->priv->bt_adapter = NULL; 1242 } 1243 1244 /* Reset Chip */ 1245 rsi_reset_chip(adapter); 1246 1247 /* Resetting to take care of the case, where-in driver is re-loaded */ 1248 sdio_claim_host(pfunction); 1249 rsi_reset_card(pfunction); 1250 sdio_disable_func(pfunction); 1251 sdio_release_host(pfunction); 1252 dev->write_fail = 2; 1253 rsi_91x_deinit(adapter); 1254 rsi_dbg(ERR_ZONE, "##### RSI SDIO device disconnected #####\n"); 1255 1256 } 1257 1258 #ifdef CONFIG_PM 1259 static int rsi_set_sdio_pm_caps(struct rsi_hw *adapter) 1260 { 1261 struct rsi_91x_sdiodev *dev = 1262 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 1263 struct sdio_func *func = dev->pfunction; 1264 int ret; 1265 1266 ret = sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); 1267 if (ret) 1268 rsi_dbg(ERR_ZONE, "Set sdio keep pwr flag failed: %d\n", ret); 1269 1270 return ret; 1271 } 1272 1273 static int rsi_sdio_disable_interrupts(struct sdio_func *pfunc) 1274 { 1275 struct rsi_hw *adapter = sdio_get_drvdata(pfunc); 1276 u8 isr_status = 0, data = 0; 1277 int ret; 1278 unsigned long t1; 1279 1280 rsi_dbg(INFO_ZONE, "Waiting for interrupts to be cleared.."); 1281 t1 = jiffies; 1282 do { 1283 rsi_sdio_read_register(adapter, RSI_FN1_INT_REGISTER, 1284 &isr_status); 1285 rsi_dbg(INFO_ZONE, "."); 1286 } while ((isr_status) && (jiffies_to_msecs(jiffies - t1) < 20)); 1287 rsi_dbg(INFO_ZONE, "Interrupts cleared\n"); 1288 1289 sdio_claim_host(pfunc); 1290 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data); 1291 if (ret < 0) { 1292 rsi_dbg(ERR_ZONE, 1293 "%s: Failed to read int enable register\n", 1294 __func__); 1295 goto done; 1296 } 1297 1298 data &= RSI_INT_ENABLE_MASK; 1299 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data); 1300 if (ret < 0) { 1301 rsi_dbg(ERR_ZONE, 1302 "%s: Failed to write to int enable register\n", 1303 __func__); 1304 goto done; 1305 } 1306 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data); 1307 if (ret < 0) { 1308 rsi_dbg(ERR_ZONE, 1309 "%s: Failed to read int enable register\n", 1310 __func__); 1311 goto done; 1312 } 1313 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data); 1314 1315 done: 1316 sdio_release_host(pfunc); 1317 return ret; 1318 } 1319 1320 static int rsi_sdio_enable_interrupts(struct sdio_func *pfunc) 1321 { 1322 u8 data; 1323 int ret; 1324 struct rsi_hw *adapter = sdio_get_drvdata(pfunc); 1325 struct rsi_common *common = adapter->priv; 1326 1327 sdio_claim_host(pfunc); 1328 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data); 1329 if (ret < 0) { 1330 rsi_dbg(ERR_ZONE, 1331 "%s: Failed to read int enable register\n", __func__); 1332 goto done; 1333 } 1334 1335 data |= ~RSI_INT_ENABLE_MASK & 0xff; 1336 1337 ret = rsi_cmd52writebyte(pfunc->card, RSI_INT_ENABLE_REGISTER, data); 1338 if (ret < 0) { 1339 rsi_dbg(ERR_ZONE, 1340 "%s: Failed to write to int enable register\n", 1341 __func__); 1342 goto done; 1343 } 1344 1345 if ((common->wow_flags & RSI_WOW_ENABLED) && 1346 (common->wow_flags & RSI_WOW_NO_CONNECTION)) 1347 rsi_dbg(ERR_ZONE, 1348 "##### Device can not wake up through WLAN\n"); 1349 1350 ret = rsi_cmd52readbyte(pfunc->card, RSI_INT_ENABLE_REGISTER, &data); 1351 if (ret < 0) { 1352 rsi_dbg(ERR_ZONE, 1353 "%s: Failed to read int enable register\n", __func__); 1354 goto done; 1355 } 1356 rsi_dbg(INFO_ZONE, "int enable reg content = %x\n", data); 1357 1358 done: 1359 sdio_release_host(pfunc); 1360 return ret; 1361 } 1362 1363 static int rsi_suspend(struct device *dev) 1364 { 1365 int ret; 1366 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1367 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1368 struct rsi_common *common; 1369 1370 if (!adapter) { 1371 rsi_dbg(ERR_ZONE, "Device is not ready\n"); 1372 return -ENODEV; 1373 } 1374 common = adapter->priv; 1375 rsi_sdio_disable_interrupts(pfunction); 1376 1377 ret = rsi_set_sdio_pm_caps(adapter); 1378 if (ret) 1379 rsi_dbg(INFO_ZONE, 1380 "Setting power management caps failed\n"); 1381 common->fsm_state = FSM_CARD_NOT_READY; 1382 1383 return 0; 1384 } 1385 1386 static int rsi_resume(struct device *dev) 1387 { 1388 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1389 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1390 struct rsi_common *common = adapter->priv; 1391 1392 common->fsm_state = FSM_MAC_INIT_DONE; 1393 rsi_sdio_enable_interrupts(pfunction); 1394 1395 return 0; 1396 } 1397 1398 static int rsi_freeze(struct device *dev) 1399 { 1400 int ret; 1401 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1402 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1403 struct rsi_common *common; 1404 struct rsi_91x_sdiodev *sdev; 1405 1406 rsi_dbg(INFO_ZONE, "SDIO Bus freeze ===>\n"); 1407 1408 if (!adapter) { 1409 rsi_dbg(ERR_ZONE, "Device is not ready\n"); 1410 return -ENODEV; 1411 } 1412 common = adapter->priv; 1413 sdev = (struct rsi_91x_sdiodev *)adapter->rsi_dev; 1414 1415 if ((common->wow_flags & RSI_WOW_ENABLED) && 1416 (common->wow_flags & RSI_WOW_NO_CONNECTION)) 1417 rsi_dbg(ERR_ZONE, 1418 "##### Device can not wake up through WLAN\n"); 1419 1420 if (IS_ENABLED(CONFIG_RSI_COEX) && common->coex_mode > 1 && 1421 common->bt_adapter) { 1422 rsi_bt_ops.detach(common->bt_adapter); 1423 common->bt_adapter = NULL; 1424 } 1425 1426 ret = rsi_sdio_disable_interrupts(pfunction); 1427 1428 if (sdev->write_fail) 1429 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n"); 1430 1431 ret = rsi_set_sdio_pm_caps(adapter); 1432 if (ret) 1433 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n"); 1434 1435 rsi_dbg(INFO_ZONE, "***** RSI module freezed *****\n"); 1436 1437 return 0; 1438 } 1439 1440 static int rsi_thaw(struct device *dev) 1441 { 1442 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1443 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1444 struct rsi_common *common = adapter->priv; 1445 1446 rsi_dbg(ERR_ZONE, "SDIO Bus thaw =====>\n"); 1447 1448 common->hibernate_resume = true; 1449 common->fsm_state = FSM_CARD_NOT_READY; 1450 common->iface_down = true; 1451 1452 rsi_sdio_enable_interrupts(pfunction); 1453 1454 rsi_dbg(INFO_ZONE, "***** RSI module thaw done *****\n"); 1455 1456 return 0; 1457 } 1458 1459 static void rsi_shutdown(struct device *dev) 1460 { 1461 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1462 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1463 struct rsi_91x_sdiodev *sdev = 1464 (struct rsi_91x_sdiodev *)adapter->rsi_dev; 1465 struct ieee80211_hw *hw = adapter->hw; 1466 1467 rsi_dbg(ERR_ZONE, "SDIO Bus shutdown =====>\n"); 1468 1469 if (hw) { 1470 struct cfg80211_wowlan *wowlan = hw->wiphy->wowlan_config; 1471 1472 if (rsi_config_wowlan(adapter, wowlan)) 1473 rsi_dbg(ERR_ZONE, "Failed to configure WoWLAN\n"); 1474 } 1475 1476 if (IS_ENABLED(CONFIG_RSI_COEX) && adapter->priv->coex_mode > 1 && 1477 adapter->priv->bt_adapter) { 1478 rsi_bt_ops.detach(adapter->priv->bt_adapter); 1479 adapter->priv->bt_adapter = NULL; 1480 } 1481 1482 rsi_sdio_disable_interrupts(sdev->pfunction); 1483 1484 if (sdev->write_fail) 1485 rsi_dbg(INFO_ZONE, "###### Device is not ready #######\n"); 1486 1487 if (rsi_set_sdio_pm_caps(adapter)) 1488 rsi_dbg(INFO_ZONE, "Setting power management caps failed\n"); 1489 1490 rsi_dbg(INFO_ZONE, "***** RSI module shut down *****\n"); 1491 } 1492 1493 static int rsi_restore(struct device *dev) 1494 { 1495 struct sdio_func *pfunction = dev_to_sdio_func(dev); 1496 struct rsi_hw *adapter = sdio_get_drvdata(pfunction); 1497 struct rsi_common *common = adapter->priv; 1498 1499 rsi_dbg(INFO_ZONE, "SDIO Bus restore ======>\n"); 1500 common->hibernate_resume = true; 1501 common->fsm_state = FSM_FW_NOT_LOADED; 1502 common->iface_down = true; 1503 1504 adapter->sc_nvifs = 0; 1505 adapter->ps_state = PS_NONE; 1506 1507 common->wow_flags = 0; 1508 common->iface_down = false; 1509 1510 rsi_dbg(INFO_ZONE, "RSI module restored\n"); 1511 1512 return 0; 1513 } 1514 static const struct dev_pm_ops rsi_pm_ops = { 1515 .suspend = rsi_suspend, 1516 .resume = rsi_resume, 1517 .freeze = rsi_freeze, 1518 .thaw = rsi_thaw, 1519 .restore = rsi_restore, 1520 }; 1521 #endif 1522 1523 static const struct sdio_device_id rsi_dev_table[] = { 1524 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9113) }, 1525 { SDIO_DEVICE(SDIO_VENDOR_ID_RSI, SDIO_DEVICE_ID_RSI_9116) }, 1526 { /* Blank */}, 1527 }; 1528 1529 static struct sdio_driver rsi_driver = { 1530 .name = "RSI-SDIO WLAN", 1531 .probe = rsi_probe, 1532 .remove = rsi_disconnect, 1533 .id_table = rsi_dev_table, 1534 #ifdef CONFIG_PM 1535 .drv = { 1536 .pm = &rsi_pm_ops, 1537 .shutdown = rsi_shutdown, 1538 } 1539 #endif 1540 }; 1541 1542 /** 1543 * rsi_module_init() - This function registers the sdio module. 1544 * @void: Void. 1545 * 1546 * Return: 0 on success. 1547 */ 1548 static int rsi_module_init(void) 1549 { 1550 int ret; 1551 1552 ret = sdio_register_driver(&rsi_driver); 1553 rsi_dbg(INIT_ZONE, "%s: Registering driver\n", __func__); 1554 return ret; 1555 } 1556 1557 /** 1558 * rsi_module_exit() - This function unregisters the sdio module. 1559 * @void: Void. 1560 * 1561 * Return: None. 1562 */ 1563 static void rsi_module_exit(void) 1564 { 1565 sdio_unregister_driver(&rsi_driver); 1566 rsi_dbg(INFO_ZONE, "%s: Unregistering driver\n", __func__); 1567 } 1568 1569 module_init(rsi_module_init); 1570 module_exit(rsi_module_exit); 1571 1572 MODULE_AUTHOR("Redpine Signals Inc"); 1573 MODULE_DESCRIPTION("Common SDIO layer for RSI drivers"); 1574 MODULE_SUPPORTED_DEVICE("RSI-91x"); 1575 MODULE_DEVICE_TABLE(sdio, rsi_dev_table); 1576 MODULE_FIRMWARE(FIRMWARE_RSI9113); 1577 MODULE_VERSION("0.1"); 1578 MODULE_LICENSE("Dual BSD/GPL"); 1579