2 * Copyright (c) 2010 Broadcom Corporation
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.
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 ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 /* ****************** SDIO CARD Interface Functions **************************/
18 #include <linux/types.h>
19 #include <linux/netdevice.h>
20 #include <linux/pci.h>
21 #include <linux/pci_ids.h>
22 #include <linux/sched.h>
23 #include <linux/completion.h>
24 #include <linux/mmc/sdio.h>
25 #include <linux/mmc/sdio_func.h>
26 #include <linux/mmc/card.h>
29 #include <brcm_hw_ids.h>
30 #include <brcmu_utils.h>
31 #include <brcmu_wifi.h>
36 #include "sdio_host.h"
38 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
40 #define SDIOH_CMD_TYPE_NORMAL 0 /* Normal command */
41 #define SDIOH_CMD_TYPE_APPEND 1 /* Append command */
42 #define SDIOH_CMD_TYPE_CUTTHRU 2 /* Cut-through command */
44 #define SDIOH_DATA_PIO 0 /* PIO mode */
45 #define SDIOH_DATA_DMA 1 /* DMA mode */
47 /* Module parameters specific to each host-controller driver */
49 module_param(sd_f2_blocksize, int, 0);
59 const struct brcmu_iovar sdioh_iovars[] = {
60 {"sd_devreg", IOV_DEVREG, 0, IOVT_BUFFER, sizeof(struct brcmf_sdreg)}
62 {"sd_rxchain", IOV_RXCHAIN, 0, IOVT_BOOL, 0}
68 brcmf_sdcard_iovar_op(struct brcmf_sdio_dev *sdiodev, const char *name,
69 void *params, int plen, void *arg, int len, bool set)
71 const struct brcmu_iovar *vi = NULL;
78 if (name == NULL || len < 0)
81 /* Set does not take qualifiers */
82 if (set && (params || plen))
85 /* Get must have return space;*/
86 if (!set && !(arg && len))
89 brcmf_dbg(TRACE, "Enter (%s %s)\n", set ? "set" : "get", name);
91 vi = brcmu_iovar_lookup(sdioh_iovars, name);
97 bcmerror = brcmu_iovar_lencheck(vi, arg, len, set);
101 /* Set up params so get and set can share the convenience variables */
102 if (params == NULL) {
107 if (vi->type == IOVT_VOID)
109 else if (vi->type == IOVT_BUFFER)
112 val_size = sizeof(int);
114 if (plen >= (int)sizeof(int_val))
115 memcpy(&int_val, params, sizeof(int_val));
117 bool_val = (int_val != 0) ? true : false;
119 actionid = set ? IOV_SVAL(vi->varid) : IOV_GVAL(vi->varid);
121 case IOV_GVAL(IOV_RXCHAIN):
123 memcpy(arg, &int_val, val_size);
126 case IOV_GVAL(IOV_DEVREG):
128 struct brcmf_sdreg *sd_ptr =
129 (struct brcmf_sdreg *) params;
132 if (brcmf_sdioh_request_byte(sdiodev, SDIOH_READ,
133 sd_ptr->func, sd_ptr->offset, &data)) {
139 memcpy(arg, &int_val, sizeof(int_val));
143 case IOV_SVAL(IOV_DEVREG):
145 struct brcmf_sdreg *sd_ptr =
146 (struct brcmf_sdreg *) params;
147 u8 data = (u8) sd_ptr->value;
149 if (brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE,
150 sd_ptr->func, sd_ptr->offset, &data)) {
158 bcmerror = -ENOTSUPP;
166 static void brcmf_sdioh_irqhandler(struct sdio_func *func)
168 struct brcmf_sdio_dev *sdiodev = dev_get_drvdata(&func->card->dev);
170 brcmf_dbg(TRACE, "***IRQHandler\n");
172 sdio_release_host(func);
174 brcmf_sdbrcm_isr(sdiodev->bus);
176 sdio_claim_host(func);
179 int brcmf_sdcard_intr_reg(struct brcmf_sdio_dev *sdiodev)
181 brcmf_dbg(TRACE, "Entering\n");
183 sdio_claim_host(sdiodev->func[1]);
184 sdio_claim_irq(sdiodev->func[1], brcmf_sdioh_irqhandler);
185 sdio_release_host(sdiodev->func[1]);
190 int brcmf_sdcard_intr_dereg(struct brcmf_sdio_dev *sdiodev)
192 brcmf_dbg(TRACE, "Entering\n");
194 sdio_claim_host(sdiodev->func[1]);
195 sdio_release_irq(sdiodev->func[1]);
196 sdio_release_host(sdiodev->func[1]);
201 u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
209 if (retry) /* wait for 1 ms till bus get settled down */
211 status = brcmf_sdioh_request_byte(sdiodev, SDIOH_READ, fnc_num,
214 && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
218 brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
219 fnc_num, addr, data);
225 brcmf_sdcard_cfg_write(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
232 if (retry) /* wait for 1 ms till bus get settled down */
234 status = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, fnc_num,
237 && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
241 brcmf_dbg(INFO, "fun = %d, addr = 0x%x, u8data = 0x%x\n",
242 fnc_num, addr, data);
245 int brcmf_sdcard_cis_read(struct brcmf_sdio_dev *sdiodev, uint func, u8 * cis,
250 u8 *tmp_buf, *tmp_ptr;
252 bool ascii = func & ~0xf;
255 status = brcmf_sdioh_cis_read(sdiodev, func, cis, length);
258 /* Move binary bits to tmp and format them
259 into the provided buffer. */
260 tmp_buf = kmalloc(length, GFP_ATOMIC);
261 if (tmp_buf == NULL) {
262 brcmf_dbg(ERROR, "out of memory\n");
265 memcpy(tmp_buf, cis, length);
266 for (tmp_ptr = tmp_buf, ptr = cis; ptr < (cis + length - 4);
268 ptr += sprintf((char *)ptr, "%.2x ", *tmp_ptr & 0xff);
269 if ((((tmp_ptr - tmp_buf) + 1) & 0xf) == 0)
270 ptr += sprintf((char *)ptr, "\n");
279 brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
282 brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
283 (address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
285 brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
286 SBSDIO_FUNC1_SBADDRMID,
287 (address >> 16) & SBSDIO_SBADDRMID_MASK,
290 brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
291 SBSDIO_FUNC1_SBADDRHIGH,
292 (address >> 24) & SBSDIO_SBADDRHIGH_MASK,
298 u32 brcmf_sdcard_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size)
302 uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
304 brcmf_dbg(INFO, "fun = 1, addr = 0x%x\n", addr);
306 if (bar0 != sdiodev->sbwad) {
307 if (brcmf_sdcard_set_sbaddr_window(sdiodev, bar0))
310 sdiodev->sbwad = bar0;
313 addr &= SBSDIO_SB_OFT_ADDR_MASK;
315 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
317 status = brcmf_sdioh_request_word(sdiodev, SDIOH_CMD_TYPE_NORMAL,
318 SDIOH_READ, SDIO_FUNC_1, addr, &word, size);
320 sdiodev->regfail = (status != 0);
322 brcmf_dbg(INFO, "u32data = 0x%x\n", word);
324 /* if ok, return appropriately masked word */
330 return word & 0xffff;
334 sdiodev->regfail = true;
339 /* otherwise, bad sdio access or invalid size */
340 brcmf_dbg(ERROR, "error reading addr 0x%04x size %d\n", addr, size);
344 u32 brcmf_sdcard_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size,
348 uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
351 brcmf_dbg(INFO, "fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
352 addr, size * 8, data);
354 if (bar0 != sdiodev->sbwad) {
355 err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
359 sdiodev->sbwad = bar0;
362 addr &= SBSDIO_SB_OFT_ADDR_MASK;
364 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
366 brcmf_sdioh_request_word(sdiodev, SDIOH_CMD_TYPE_NORMAL,
367 SDIOH_WRITE, SDIO_FUNC_1, addr, &data, size);
368 sdiodev->regfail = (status != 0);
373 brcmf_dbg(ERROR, "error writing 0x%08x to addr 0x%04x size %d\n",
378 bool brcmf_sdcard_regfail(struct brcmf_sdio_dev *sdiodev)
380 return sdiodev->regfail;
384 brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
386 u8 *buf, uint nbytes, struct sk_buff *pkt)
391 uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
394 brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n", fn, addr, nbytes);
396 /* Async not implemented yet */
397 if (flags & SDIO_REQ_ASYNC)
400 if (bar0 != sdiodev->sbwad) {
401 err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
405 sdiodev->sbwad = bar0;
408 addr &= SBSDIO_SB_OFT_ADDR_MASK;
410 incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
411 width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
413 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
415 status = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_PIO,
416 incr_fix, SDIOH_READ, fn, addr, width, nbytes, buf, pkt);
422 brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
423 uint flags, u8 *buf, uint nbytes, struct sk_buff *pkt)
427 uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
430 brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n", fn, addr, nbytes);
432 /* Async not implemented yet */
433 if (flags & SDIO_REQ_ASYNC)
436 if (bar0 != sdiodev->sbwad) {
437 err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
441 sdiodev->sbwad = bar0;
444 addr &= SBSDIO_SB_OFT_ADDR_MASK;
446 incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
447 width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
449 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
451 return brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_PIO,
452 incr_fix, SDIOH_WRITE, fn, addr, width, nbytes, buf, pkt);
455 int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
456 u8 *buf, uint nbytes)
458 addr &= SBSDIO_SB_OFT_ADDR_MASK;
459 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
461 return brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_PIO,
462 SDIOH_DATA_INC, (rw ? SDIOH_WRITE : SDIOH_READ), SDIO_FUNC_1,
463 addr, 4, nbytes, buf, NULL);
466 int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
468 char t_func = (char)fn;
469 brcmf_dbg(TRACE, "Enter\n");
471 /* issue abort cmd52 command through F0 */
472 brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0,
473 SDIO_CCCR_ABORT, &t_func);
475 brcmf_dbg(TRACE, "Exit\n");
479 u32 brcmf_sdcard_cur_sbwad(struct brcmf_sdio_dev *sdiodev)
481 return sdiodev->sbwad;
484 int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
489 ret = brcmf_sdioh_attach(sdiodev);
495 /* Report the BAR, to fix if needed */
496 sdiodev->sbwad = SI_ENUM_BASE;
498 /* try to attach to the target device */
499 sdiodev->bus = brcmf_sdbrcm_probe(0, 0, 0, 0, regs, sdiodev);
501 brcmf_dbg(ERROR, "device attach failed\n");
508 brcmf_sdio_remove(sdiodev);
512 EXPORT_SYMBOL(brcmf_sdio_probe);
514 int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
517 brcmf_sdbrcm_disconnect(sdiodev->bus);
521 brcmf_sdioh_detach(sdiodev);
527 EXPORT_SYMBOL(brcmf_sdio_remove);
529 int brcmf_sdio_register(void)
531 return brcmf_sdio_function_init();
534 void brcmf_sdio_unregister(void)
536 brcmf_sdio_function_cleanup();
539 void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
542 brcmf_sdbrcm_wd_timer(sdiodev->bus, brcmf_watchdog_ms);
544 brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);