1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 4 Driver for the Marvell 8385 based compact flash WLAN cards. 5 6 (C) 2007 by Holger Schurig <hs4233@mail.mn-solutions.de> 7 8 9*/ 10 11#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 12 13#include <linux/module.h> 14#include <linux/slab.h> 15#include <linux/delay.h> 16#include <linux/moduleparam.h> 17#include <linux/firmware.h> 18#include <linux/netdevice.h> 19 20#include <pcmcia/cistpl.h> 21#include <pcmcia/ds.h> 22 23#include <linux/io.h> 24 25#define DRV_NAME "libertas_cs" 26 27#include "decl.h" 28#include "defs.h" 29#include "dev.h" 30 31 32/********************************************************************/ 33/* Module stuff */ 34/********************************************************************/ 35 36MODULE_AUTHOR("Holger Schurig <hs4233@mail.mn-solutions.de>"); 37MODULE_DESCRIPTION("Driver for Marvell 83xx compact flash WLAN cards"); 38MODULE_LICENSE("GPL"); 39 40 41 42/********************************************************************/ 43/* Data structures */ 44/********************************************************************/ 45 46struct if_cs_card { 47 struct pcmcia_device *p_dev; 48 struct lbs_private *priv; 49 void __iomem *iobase; 50 bool align_regs; 51 u32 model; 52}; 53 54 55enum { 56 MODEL_UNKNOWN = 0x00, 57 MODEL_8305 = 0x01, 58 MODEL_8381 = 0x02, 59 MODEL_8385 = 0x03 60}; 61 62static const struct lbs_fw_table fw_table[] = { 63 { MODEL_8305, "libertas/cf8305.bin", NULL }, 64 { MODEL_8305, "libertas_cs_helper.fw", NULL }, 65 { MODEL_8381, "libertas/cf8381_helper.bin", "libertas/cf8381.bin" }, 66 { MODEL_8381, "libertas_cs_helper.fw", "libertas_cs.fw" }, 67 { MODEL_8385, "libertas/cf8385_helper.bin", "libertas/cf8385.bin" }, 68 { MODEL_8385, "libertas_cs_helper.fw", "libertas_cs.fw" }, 69 { 0, NULL, NULL } 70}; 71MODULE_FIRMWARE("libertas/cf8305.bin"); 72MODULE_FIRMWARE("libertas/cf8381_helper.bin"); 73MODULE_FIRMWARE("libertas/cf8381.bin"); 74MODULE_FIRMWARE("libertas/cf8385_helper.bin"); 75MODULE_FIRMWARE("libertas/cf8385.bin"); 76MODULE_FIRMWARE("libertas_cs_helper.fw"); 77MODULE_FIRMWARE("libertas_cs.fw"); 78 79 80/********************************************************************/ 81/* Hardware access */ 82/********************************************************************/ 83 84/* This define enables wrapper functions which allow you 85 to dump all register accesses. You normally won't this, 86 except for development */ 87/* #define DEBUG_IO */ 88 89#ifdef DEBUG_IO 90static int debug_output = 0; 91#else 92/* This way the compiler optimizes the printk's away */ 93#define debug_output 0 94#endif 95 96static inline unsigned int if_cs_read8(struct if_cs_card *card, uint reg) 97{ 98 unsigned int val = ioread8(card->iobase + reg); 99 if (debug_output) 100 printk(KERN_INFO "inb %08x<%02x\n", reg, val); 101 return val; 102} 103static inline unsigned int if_cs_read16(struct if_cs_card *card, uint reg) 104{ 105 unsigned int val = ioread16(card->iobase + reg); 106 if (debug_output) 107 printk(KERN_INFO "inw %08x<%04x\n", reg, val); 108 return val; 109} 110static inline void if_cs_read16_rep( 111 struct if_cs_card *card, 112 uint reg, 113 void *buf, 114 unsigned long count) 115{ 116 if (debug_output) 117 printk(KERN_INFO "insw %08x<(0x%lx words)\n", 118 reg, count); 119 ioread16_rep(card->iobase + reg, buf, count); 120} 121 122static inline void if_cs_write8(struct if_cs_card *card, uint reg, u8 val) 123{ 124 if (debug_output) 125 printk(KERN_INFO "outb %08x>%02x\n", reg, val); 126 iowrite8(val, card->iobase + reg); 127} 128 129static inline void if_cs_write16(struct if_cs_card *card, uint reg, u16 val) 130{ 131 if (debug_output) 132 printk(KERN_INFO "outw %08x>%04x\n", reg, val); 133 iowrite16(val, card->iobase + reg); 134} 135 136static inline void if_cs_write16_rep( 137 struct if_cs_card *card, 138 uint reg, 139 const void *buf, 140 unsigned long count) 141{ 142 if (debug_output) 143 printk(KERN_INFO "outsw %08x>(0x%lx words)\n", 144 reg, count); 145 iowrite16_rep(card->iobase + reg, buf, count); 146} 147 148 149/* 150 * I know that polling/delaying is frowned upon. However, this procedure 151 * with polling is needed while downloading the firmware. At this stage, 152 * the hardware does unfortunately not create any interrupts. 153 * 154 * Fortunately, this function is never used once the firmware is in 155 * the card. :-) 156 * 157 * As a reference, see the "Firmware Specification v5.1", page 18 158 * and 19. I did not follow their suggested timing to the word, 159 * but this works nice & fast anyway. 160 */ 161static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 reg) 162{ 163 int i; 164 165 for (i = 0; i < 100000; i++) { 166 u8 val = if_cs_read8(card, addr); 167 if (val == reg) 168 return 0; 169 udelay(5); 170 } 171 return -ETIME; 172} 173 174 175 176/* 177 * First the bitmasks for the host/card interrupt/status registers: 178 */ 179#define IF_CS_BIT_TX 0x0001 180#define IF_CS_BIT_RX 0x0002 181#define IF_CS_BIT_COMMAND 0x0004 182#define IF_CS_BIT_RESP 0x0008 183#define IF_CS_BIT_EVENT 0x0010 184#define IF_CS_BIT_MASK 0x001f 185 186 187 188/* 189 * It's not really clear to me what the host status register is for. It 190 * needs to be set almost in union with "host int cause". The following 191 * bits from above are used: 192 * 193 * IF_CS_BIT_TX driver downloaded a data packet 194 * IF_CS_BIT_RX driver got a data packet 195 * IF_CS_BIT_COMMAND driver downloaded a command 196 * IF_CS_BIT_RESP not used (has some meaning with powerdown) 197 * IF_CS_BIT_EVENT driver read a host event 198 */ 199#define IF_CS_HOST_STATUS 0x00000000 200 201/* 202 * With the host int cause register can the host (that is, Linux) cause 203 * an interrupt in the firmware, to tell the firmware about those events: 204 * 205 * IF_CS_BIT_TX a data packet has been downloaded 206 * IF_CS_BIT_RX a received data packet has retrieved 207 * IF_CS_BIT_COMMAND a firmware block or a command has been downloaded 208 * IF_CS_BIT_RESP not used (has some meaning with powerdown) 209 * IF_CS_BIT_EVENT a host event (link lost etc) has been retrieved 210 */ 211#define IF_CS_HOST_INT_CAUSE 0x00000002 212 213/* 214 * The host int mask register is used to enable/disable interrupt. However, 215 * I have the suspicion that disabled interrupts are lost. 216 */ 217#define IF_CS_HOST_INT_MASK 0x00000004 218 219/* 220 * Used to send or receive data packets: 221 */ 222#define IF_CS_WRITE 0x00000016 223#define IF_CS_WRITE_LEN 0x00000014 224#define IF_CS_READ 0x00000010 225#define IF_CS_READ_LEN 0x00000024 226 227/* 228 * Used to send commands (and to send firmware block) and to 229 * receive command responses: 230 */ 231#define IF_CS_CMD 0x0000001A 232#define IF_CS_CMD_LEN 0x00000018 233#define IF_CS_RESP 0x00000012 234#define IF_CS_RESP_LEN 0x00000030 235 236/* 237 * The card status registers shows what the card/firmware actually 238 * accepts: 239 * 240 * IF_CS_BIT_TX you may send a data packet 241 * IF_CS_BIT_RX you may retrieve a data packet 242 * IF_CS_BIT_COMMAND you may send a command 243 * IF_CS_BIT_RESP you may retrieve a command response 244 * IF_CS_BIT_EVENT the card has a event for use (link lost, snr low etc) 245 * 246 * When reading this register several times, you will get back the same 247 * results --- with one exception: the IF_CS_BIT_EVENT clear itself 248 * automatically. 249 * 250 * Not that we don't rely on BIT_RX,_BIT_RESP or BIT_EVENT because 251 * we handle this via the card int cause register. 252 */ 253#define IF_CS_CARD_STATUS 0x00000020 254#define IF_CS_CARD_STATUS_MASK 0x7f00 255 256/* 257 * The card int cause register is used by the card/firmware to notify us 258 * about the following events: 259 * 260 * IF_CS_BIT_TX a data packet has successfully been sentx 261 * IF_CS_BIT_RX a data packet has been received and can be retrieved 262 * IF_CS_BIT_COMMAND not used 263 * IF_CS_BIT_RESP the firmware has a command response for us 264 * IF_CS_BIT_EVENT the card has a event for use (link lost, snr low etc) 265 */ 266#define IF_CS_CARD_INT_CAUSE 0x00000022 267 268/* 269 * This is used to for handshaking with the card's bootloader/helper image 270 * to synchronize downloading of firmware blocks. 271 */ 272#define IF_CS_SQ_READ_LOW 0x00000028 273#define IF_CS_SQ_HELPER_OK 0x10 274 275/* 276 * The scratch register tells us ... 277 * 278 * IF_CS_SCRATCH_BOOT_OK the bootloader runs 279 * IF_CS_SCRATCH_HELPER_OK the helper firmware already runs 280 */ 281#define IF_CS_SCRATCH 0x0000003F 282#define IF_CS_SCRATCH_BOOT_OK 0x00 283#define IF_CS_SCRATCH_HELPER_OK 0x5a 284 285/* 286 * Used to detect ancient chips: 287 */ 288#define IF_CS_PRODUCT_ID 0x0000001C 289#define IF_CS_CF8385_B1_REV 0x12 290#define IF_CS_CF8381_B3_REV 0x04 291#define IF_CS_CF8305_B1_REV 0x03 292 293/* 294 * Used to detect other cards than CF8385 since their revisions of silicon 295 * doesn't match those from CF8385, eg. CF8381 B3 works with this driver. 296 */ 297#define CF8305_MANFID 0x02db 298#define CF8305_CARDID 0x8103 299#define CF8381_MANFID 0x02db 300#define CF8381_CARDID 0x6064 301#define CF8385_MANFID 0x02df 302#define CF8385_CARDID 0x8103 303 304/* 305 * FIXME: just use the 'driver_info' field of 'struct pcmcia_device_id' when 306 * that gets fixed. Currently there's no way to access it from the probe hook. 307 */ 308static inline u32 get_model(u16 manf_id, u16 card_id) 309{ 310 /* NOTE: keep in sync with if_cs_ids */ 311 if (manf_id == CF8305_MANFID && card_id == CF8305_CARDID) 312 return MODEL_8305; 313 else if (manf_id == CF8381_MANFID && card_id == CF8381_CARDID) 314 return MODEL_8381; 315 else if (manf_id == CF8385_MANFID && card_id == CF8385_CARDID) 316 return MODEL_8385; 317 return MODEL_UNKNOWN; 318} 319 320/********************************************************************/ 321/* I/O and interrupt handling */ 322/********************************************************************/ 323 324static inline void if_cs_enable_ints(struct if_cs_card *card) 325{ 326 if_cs_write16(card, IF_CS_HOST_INT_MASK, 0); 327} 328 329static inline void if_cs_disable_ints(struct if_cs_card *card) 330{ 331 if_cs_write16(card, IF_CS_HOST_INT_MASK, IF_CS_BIT_MASK); 332} 333 334/* 335 * Called from if_cs_host_to_card to send a command to the hardware 336 */ 337static int if_cs_send_cmd(struct lbs_private *priv, u8 *buf, u16 nb) 338{ 339 struct if_cs_card *card = (struct if_cs_card *)priv->card; 340 int ret = -1; 341 int loops = 0; 342 343 if_cs_disable_ints(card); 344 345 /* Is hardware ready? */ 346 while (1) { 347 u16 status = if_cs_read16(card, IF_CS_CARD_STATUS); 348 if (status & IF_CS_BIT_COMMAND) 349 break; 350 if (++loops > 100) { 351 netdev_err(priv->dev, "card not ready for commands\n"); 352 goto done; 353 } 354 mdelay(1); 355 } 356 357 if_cs_write16(card, IF_CS_CMD_LEN, nb); 358 359 if_cs_write16_rep(card, IF_CS_CMD, buf, nb / 2); 360 /* Are we supposed to transfer an odd amount of bytes? */ 361 if (nb & 1) 362 if_cs_write8(card, IF_CS_CMD, buf[nb-1]); 363 364 /* "Assert the download over interrupt command in the Host 365 * status register" */ 366 if_cs_write16(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND); 367 368 /* "Assert the download over interrupt command in the Card 369 * interrupt case register" */ 370 if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND); 371 ret = 0; 372 373done: 374 if_cs_enable_ints(card); 375 return ret; 376} 377 378/* 379 * Called from if_cs_host_to_card to send a data to the hardware 380 */ 381static void if_cs_send_data(struct lbs_private *priv, u8 *buf, u16 nb) 382{ 383 struct if_cs_card *card = (struct if_cs_card *)priv->card; 384 u16 status; 385 386 if_cs_disable_ints(card); 387 388 status = if_cs_read16(card, IF_CS_CARD_STATUS); 389 BUG_ON((status & IF_CS_BIT_TX) == 0); 390 391 if_cs_write16(card, IF_CS_WRITE_LEN, nb); 392 393 /* write even number of bytes, then odd byte if necessary */ 394 if_cs_write16_rep(card, IF_CS_WRITE, buf, nb / 2); 395 if (nb & 1) 396 if_cs_write8(card, IF_CS_WRITE, buf[nb-1]); 397 398 if_cs_write16(card, IF_CS_HOST_STATUS, IF_CS_BIT_TX); 399 if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_TX); 400 if_cs_enable_ints(card); 401} 402 403/* 404 * Get the command result out of the card. 405 */ 406static int if_cs_receive_cmdres(struct lbs_private *priv, u8 *data, u32 *len) 407{ 408 unsigned long flags; 409 int ret = -1; 410 u16 status; 411 412 /* is hardware ready? */ 413 status = if_cs_read16(priv->card, IF_CS_CARD_STATUS); 414 if ((status & IF_CS_BIT_RESP) == 0) { 415 netdev_err(priv->dev, "no cmd response in card\n"); 416 *len = 0; 417 goto out; 418 } 419 420 *len = if_cs_read16(priv->card, IF_CS_RESP_LEN); 421 if ((*len == 0) || (*len > LBS_CMD_BUFFER_SIZE)) { 422 netdev_err(priv->dev, 423 "card cmd buffer has invalid # of bytes (%d)\n", 424 *len); 425 goto out; 426 } 427 428 /* read even number of bytes, then odd byte if necessary */ 429 if_cs_read16_rep(priv->card, IF_CS_RESP, data, *len/sizeof(u16)); 430 if (*len & 1) 431 data[*len-1] = if_cs_read8(priv->card, IF_CS_RESP); 432 433 /* This is a workaround for a firmware that reports too much 434 * bytes */ 435 *len -= 8; 436 ret = 0; 437 438 /* Clear this flag again */ 439 spin_lock_irqsave(&priv->driver_lock, flags); 440 priv->dnld_sent = DNLD_RES_RECEIVED; 441 spin_unlock_irqrestore(&priv->driver_lock, flags); 442 443out: 444 return ret; 445} 446 447static struct sk_buff *if_cs_receive_data(struct lbs_private *priv) 448{ 449 struct sk_buff *skb = NULL; 450 u16 len; 451 u8 *data; 452 453 len = if_cs_read16(priv->card, IF_CS_READ_LEN); 454 if (len == 0 || len > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) { 455 netdev_err(priv->dev, 456 "card data buffer has invalid # of bytes (%d)\n", 457 len); 458 priv->dev->stats.rx_dropped++; 459 goto dat_err; 460 } 461 462 skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + 2); 463 if (!skb) 464 goto out; 465 skb_put(skb, len); 466 skb_reserve(skb, 2);/* 16 byte align */ 467 data = skb->data; 468 469 /* read even number of bytes, then odd byte if necessary */ 470 if_cs_read16_rep(priv->card, IF_CS_READ, data, len/sizeof(u16)); 471 if (len & 1) 472 data[len-1] = if_cs_read8(priv->card, IF_CS_READ); 473 474dat_err: 475 if_cs_write16(priv->card, IF_CS_HOST_STATUS, IF_CS_BIT_RX); 476 if_cs_write16(priv->card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_RX); 477 478out: 479 return skb; 480} 481 482static irqreturn_t if_cs_interrupt(int irq, void *data) 483{ 484 struct if_cs_card *card = data; 485 struct lbs_private *priv = card->priv; 486 u16 cause; 487 488 /* Ask card interrupt cause register if there is something for us */ 489 cause = if_cs_read16(card, IF_CS_CARD_INT_CAUSE); 490 lbs_deb_cs("cause 0x%04x\n", cause); 491 492 if (cause == 0) { 493 /* Not for us */ 494 return IRQ_NONE; 495 } 496 497 if (cause == 0xffff) { 498 /* Read in junk, the card has probably been removed */ 499 card->priv->surpriseremoved = 1; 500 return IRQ_HANDLED; 501 } 502 503 if (cause & IF_CS_BIT_RX) { 504 struct sk_buff *skb; 505 lbs_deb_cs("rx packet\n"); 506 skb = if_cs_receive_data(priv); 507 if (skb) 508 lbs_process_rxed_packet(priv, skb); 509 } 510 511 if (cause & IF_CS_BIT_TX) { 512 lbs_deb_cs("tx done\n"); 513 lbs_host_to_card_done(priv); 514 } 515 516 if (cause & IF_CS_BIT_RESP) { 517 unsigned long flags; 518 u8 i; 519 520 lbs_deb_cs("cmd resp\n"); 521 spin_lock_irqsave(&priv->driver_lock, flags); 522 i = (priv->resp_idx == 0) ? 1 : 0; 523 spin_unlock_irqrestore(&priv->driver_lock, flags); 524 525 BUG_ON(priv->resp_len[i]); 526 if_cs_receive_cmdres(priv, priv->resp_buf[i], 527 &priv->resp_len[i]); 528 529 spin_lock_irqsave(&priv->driver_lock, flags); 530 lbs_notify_command_response(priv, i); 531 spin_unlock_irqrestore(&priv->driver_lock, flags); 532 } 533 534 if (cause & IF_CS_BIT_EVENT) { 535 u16 status = if_cs_read16(priv->card, IF_CS_CARD_STATUS); 536 if_cs_write16(priv->card, IF_CS_HOST_INT_CAUSE, 537 IF_CS_BIT_EVENT); 538 lbs_queue_event(priv, (status & IF_CS_CARD_STATUS_MASK) >> 8); 539 } 540 541 /* Clear interrupt cause */ 542 if_cs_write16(card, IF_CS_CARD_INT_CAUSE, cause & IF_CS_BIT_MASK); 543 544 return IRQ_HANDLED; 545} 546 547 548 549 550/********************************************************************/ 551/* Firmware */ 552/********************************************************************/ 553 554/* 555 * Tries to program the helper firmware. 556 * 557 * Return 0 on success 558 */ 559static int if_cs_prog_helper(struct if_cs_card *card, const struct firmware *fw) 560{ 561 int ret = 0; 562 int sent = 0; 563 u8 scratch; 564 565 /* 566 * This is the only place where an unaligned register access happens on 567 * the CF8305 card, therefore for the sake of speed of the driver, we do 568 * the alignment correction here. 569 */ 570 if (card->align_regs) 571 scratch = if_cs_read16(card, IF_CS_SCRATCH) >> 8; 572 else 573 scratch = if_cs_read8(card, IF_CS_SCRATCH); 574 575 /* "If the value is 0x5a, the firmware is already 576 * downloaded successfully" 577 */ 578 if (scratch == IF_CS_SCRATCH_HELPER_OK) 579 goto done; 580 581 /* "If the value is != 00, it is invalid value of register */ 582 if (scratch != IF_CS_SCRATCH_BOOT_OK) { 583 ret = -ENODEV; 584 goto done; 585 } 586 587 lbs_deb_cs("helper size %td\n", fw->size); 588 589 /* "Set the 5 bytes of the helper image to 0" */ 590 /* Not needed, this contains an ARM branch instruction */ 591 592 for (;;) { 593 /* "the number of bytes to send is 256" */ 594 int count = 256; 595 int remain = fw->size - sent; 596 597 if (remain < count) 598 count = remain; 599 600 /* 601 * "write the number of bytes to be sent to the I/O Command 602 * write length register" 603 */ 604 if_cs_write16(card, IF_CS_CMD_LEN, count); 605 606 /* "write this to I/O Command port register as 16 bit writes */ 607 if (count) 608 if_cs_write16_rep(card, IF_CS_CMD, 609 &fw->data[sent], 610 count >> 1); 611 612 /* 613 * "Assert the download over interrupt command in the Host 614 * status register" 615 */ 616 if_cs_write8(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND); 617 618 /* 619 * "Assert the download over interrupt command in the Card 620 * interrupt case register" 621 */ 622 if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND); 623 624 /* 625 * "The host polls the Card Status register ... for 50 ms before 626 * declaring a failure" 627 */ 628 ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_STATUS, 629 IF_CS_BIT_COMMAND); 630 if (ret < 0) { 631 pr_err("can't download helper at 0x%x, ret %d\n", 632 sent, ret); 633 goto done; 634 } 635 636 if (count == 0) 637 break; 638 639 sent += count; 640 } 641 642done: 643 return ret; 644} 645 646 647static int if_cs_prog_real(struct if_cs_card *card, const struct firmware *fw) 648{ 649 int ret = 0; 650 int retry = 0; 651 int len = 0; 652 int sent; 653 654 lbs_deb_cs("fw size %td\n", fw->size); 655 656 ret = if_cs_poll_while_fw_download(card, IF_CS_SQ_READ_LOW, 657 IF_CS_SQ_HELPER_OK); 658 if (ret < 0) { 659 pr_err("helper firmware doesn't answer\n"); 660 goto done; 661 } 662 663 for (sent = 0; sent < fw->size; sent += len) { 664 len = if_cs_read16(card, IF_CS_SQ_READ_LOW); 665 if (len & 1) { 666 retry++; 667 pr_info("odd, need to retry this firmware block\n"); 668 } else { 669 retry = 0; 670 } 671 672 if (retry > 20) { 673 pr_err("could not download firmware\n"); 674 ret = -ENODEV; 675 goto done; 676 } 677 if (retry) { 678 sent -= len; 679 } 680 681 682 if_cs_write16(card, IF_CS_CMD_LEN, len); 683 684 if_cs_write16_rep(card, IF_CS_CMD, 685 &fw->data[sent], 686 (len+1) >> 1); 687 if_cs_write8(card, IF_CS_HOST_STATUS, IF_CS_BIT_COMMAND); 688 if_cs_write16(card, IF_CS_HOST_INT_CAUSE, IF_CS_BIT_COMMAND); 689 690 ret = if_cs_poll_while_fw_download(card, IF_CS_CARD_STATUS, 691 IF_CS_BIT_COMMAND); 692 if (ret < 0) { 693 pr_err("can't download firmware at 0x%x\n", sent); 694 goto done; 695 } 696 } 697 698 ret = if_cs_poll_while_fw_download(card, IF_CS_SCRATCH, 0x5a); 699 if (ret < 0) 700 pr_err("firmware download failed\n"); 701 702done: 703 return ret; 704} 705 706static void if_cs_prog_firmware(struct lbs_private *priv, int ret, 707 const struct firmware *helper, 708 const struct firmware *mainfw) 709{ 710 struct if_cs_card *card = priv->card; 711 712 if (ret) { 713 pr_err("failed to find firmware (%d)\n", ret); 714 return; 715 } 716 717 /* Load the firmware */ 718 ret = if_cs_prog_helper(card, helper); 719 if (ret == 0 && (card->model != MODEL_8305)) 720 ret = if_cs_prog_real(card, mainfw); 721 if (ret) 722 return; 723 724 /* Now actually get the IRQ */ 725 ret = request_irq(card->p_dev->irq, if_cs_interrupt, 726 IRQF_SHARED, DRV_NAME, card); 727 if (ret) { 728 pr_err("error in request_irq\n"); 729 return; 730 } 731 732 /* 733 * Clear any interrupt cause that happened while sending 734 * firmware/initializing card 735 */ 736 if_cs_write16(card, IF_CS_CARD_INT_CAUSE, IF_CS_BIT_MASK); 737 if_cs_enable_ints(card); 738 739 /* And finally bring the card up */ 740 priv->fw_ready = 1; 741 if (lbs_start_card(priv) != 0) { 742 pr_err("could not activate card\n"); 743 free_irq(card->p_dev->irq, card); 744 } 745} 746 747 748/********************************************************************/ 749/* Callback functions for libertas.ko */ 750/********************************************************************/ 751 752/* Send commands or data packets to the card */ 753static int if_cs_host_to_card(struct lbs_private *priv, 754 u8 type, 755 u8 *buf, 756 u16 nb) 757{ 758 int ret = -1; 759 760 switch (type) { 761 case MVMS_DAT: 762 priv->dnld_sent = DNLD_DATA_SENT; 763 if_cs_send_data(priv, buf, nb); 764 ret = 0; 765 break; 766 case MVMS_CMD: 767 priv->dnld_sent = DNLD_CMD_SENT; 768 ret = if_cs_send_cmd(priv, buf, nb); 769 break; 770 default: 771 netdev_err(priv->dev, "%s: unsupported type %d\n", 772 __func__, type); 773 } 774 775 return ret; 776} 777 778 779static void if_cs_release(struct pcmcia_device *p_dev) 780{ 781 struct if_cs_card *card = p_dev->priv; 782 783 free_irq(p_dev->irq, card); 784 pcmcia_disable_device(p_dev); 785 if (card->iobase) 786 ioport_unmap(card->iobase); 787} 788 789 790static int if_cs_ioprobe(struct pcmcia_device *p_dev, void *priv_data) 791{ 792 p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; 793 p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO; 794 795 if (p_dev->resource[1]->end) { 796 pr_err("wrong CIS (check number of IO windows)\n"); 797 return -ENODEV; 798 } 799 800 /* This reserves IO space but doesn't actually enable it */ 801 return pcmcia_request_io(p_dev); 802} 803 804static int if_cs_probe(struct pcmcia_device *p_dev) 805{ 806 int ret = -ENOMEM; 807 unsigned int prod_id; 808 struct lbs_private *priv; 809 struct if_cs_card *card; 810 811 card = kzalloc(sizeof(struct if_cs_card), GFP_KERNEL); 812 if (!card) 813 goto out; 814 815 card->p_dev = p_dev; 816 p_dev->priv = card; 817 818 p_dev->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; 819 820 if (pcmcia_loop_config(p_dev, if_cs_ioprobe, NULL)) { 821 pr_err("error in pcmcia_loop_config\n"); 822 goto out1; 823 } 824 825 /* 826 * Allocate an interrupt line. Note that this does not assign 827 * a handler to the interrupt, unless the 'Handler' member of 828 * the irq structure is initialized. 829 */ 830 if (!p_dev->irq) 831 goto out1; 832 833 /* Initialize io access */ 834 card->iobase = ioport_map(p_dev->resource[0]->start, 835 resource_size(p_dev->resource[0])); 836 if (!card->iobase) { 837 pr_err("error in ioport_map\n"); 838 ret = -EIO; 839 goto out1; 840 } 841 842 ret = pcmcia_enable_device(p_dev); 843 if (ret) { 844 pr_err("error in pcmcia_enable_device\n"); 845 goto out2; 846 } 847 848 /* Finally, report what we've done */ 849 lbs_deb_cs("irq %d, io %pR", p_dev->irq, p_dev->resource[0]); 850 851 /* 852 * Most of the libertas cards can do unaligned register access, but some 853 * weird ones cannot. That's especially true for the CF8305 card. 854 */ 855 card->align_regs = false; 856 857 card->model = get_model(p_dev->manf_id, p_dev->card_id); 858 if (card->model == MODEL_UNKNOWN) { 859 pr_err("unsupported manf_id 0x%04x / card_id 0x%04x\n", 860 p_dev->manf_id, p_dev->card_id); 861 ret = -ENODEV; 862 goto out2; 863 } 864 865 /* Check if we have a current silicon */ 866 prod_id = if_cs_read8(card, IF_CS_PRODUCT_ID); 867 if (card->model == MODEL_8305) { 868 card->align_regs = true; 869 if (prod_id < IF_CS_CF8305_B1_REV) { 870 pr_err("8305 rev B0 and older are not supported\n"); 871 ret = -ENODEV; 872 goto out2; 873 } 874 } 875 876 if ((card->model == MODEL_8381) && prod_id < IF_CS_CF8381_B3_REV) { 877 pr_err("8381 rev B2 and older are not supported\n"); 878 ret = -ENODEV; 879 goto out2; 880 } 881 882 if ((card->model == MODEL_8385) && prod_id < IF_CS_CF8385_B1_REV) { 883 pr_err("8385 rev B0 and older are not supported\n"); 884 ret = -ENODEV; 885 goto out2; 886 } 887 888 /* Make this card known to the libertas driver */ 889 priv = lbs_add_card(card, &p_dev->dev); 890 if (IS_ERR(priv)) { 891 ret = PTR_ERR(priv); 892 goto out2; 893 } 894 895 /* Set up fields in lbs_private */ 896 card->priv = priv; 897 priv->card = card; 898 priv->hw_host_to_card = if_cs_host_to_card; 899 priv->enter_deep_sleep = NULL; 900 priv->exit_deep_sleep = NULL; 901 priv->reset_deep_sleep_wakeup = NULL; 902 903 /* Get firmware */ 904 ret = lbs_get_firmware_async(priv, &p_dev->dev, card->model, fw_table, 905 if_cs_prog_firmware); 906 if (ret) { 907 pr_err("failed to find firmware (%d)\n", ret); 908 goto out3; 909 } 910 911 goto out; 912 913out3: 914 lbs_remove_card(priv); 915out2: 916 ioport_unmap(card->iobase); 917out1: 918 pcmcia_disable_device(p_dev); 919out: 920 return ret; 921} 922 923 924static void if_cs_detach(struct pcmcia_device *p_dev) 925{ 926 struct if_cs_card *card = p_dev->priv; 927 928 lbs_stop_card(card->priv); 929 lbs_remove_card(card->priv); 930 if_cs_disable_ints(card); 931 if_cs_release(p_dev); 932 kfree(card); 933} 934 935 936 937/********************************************************************/ 938/* Module initialization */ 939/********************************************************************/ 940 941static const struct pcmcia_device_id if_cs_ids[] = { 942 PCMCIA_DEVICE_MANF_CARD(CF8305_MANFID, CF8305_CARDID), 943 PCMCIA_DEVICE_MANF_CARD(CF8381_MANFID, CF8381_CARDID), 944 PCMCIA_DEVICE_MANF_CARD(CF8385_MANFID, CF8385_CARDID), 945 /* NOTE: keep in sync with get_model() */ 946 PCMCIA_DEVICE_NULL, 947}; 948MODULE_DEVICE_TABLE(pcmcia, if_cs_ids); 949 950static struct pcmcia_driver lbs_driver = { 951 .owner = THIS_MODULE, 952 .name = DRV_NAME, 953 .probe = if_cs_probe, 954 .remove = if_cs_detach, 955 .id_table = if_cs_ids, 956}; 957module_pcmcia_driver(lbs_driver); 958