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_func.h>
25 #include <linux/mmc/card.h>
28 #include <brcm_hw_ids.h>
29 #include <brcmu_utils.h>
30 #include <brcmu_wifi.h>
35 #include "sdio_host.h"
37 #define SDIOH_API_ACCESS_RETRY_LIMIT 2
39 #define SDIOH_CMD_TYPE_NORMAL 0 /* Normal command */
40 #define SDIOH_CMD_TYPE_APPEND 1 /* Append command */
41 #define SDIOH_CMD_TYPE_CUTTHRU 2 /* Cut-through command */
43 #define SDIOH_DATA_PIO 0 /* PIO mode */
44 #define SDIOH_DATA_DMA 1 /* DMA mode */
46 /* Module parameters specific to each host-controller driver */
48 module_param(sd_f2_blocksize, int, 0);
58 const struct brcmu_iovar sdioh_iovars[] = {
59 {"sd_devreg", IOV_DEVREG, 0, IOVT_BUFFER, sizeof(struct brcmf_sdreg)}
61 {"sd_rxchain", IOV_RXCHAIN, 0, IOVT_BOOL, 0}
67 brcmf_sdcard_iovar_op(struct brcmf_sdio_dev *sdiodev, const char *name,
68 void *params, int plen, void *arg, int len, bool set)
70 const struct brcmu_iovar *vi = NULL;
77 if (name == NULL || len < 0)
80 /* Set does not take qualifiers */
81 if (set && (params || plen))
84 /* Get must have return space;*/
85 if (!set && !(arg && len))
88 BRCMF_TRACE(("%s: Enter (%s %s)\n", __func__, (set ? "set" : "get"),
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_cfg_read
133 (sdiodev, 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_cfg_write
150 (sdiodev, 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_TRACE(("brcmf: ***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_TRACE(("%s: Entering\n", __func__));
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 return brcmf_sdioh_interrupt_deregister(sdiodev);
195 u8 brcmf_sdcard_cfg_read(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
203 if (retry) /* wait for 1 ms till bus get settled down */
206 brcmf_sdioh_cfg_read(sdiodev, fnc_num, addr,
209 && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
213 BRCMF_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
214 __func__, fnc_num, addr, data));
220 brcmf_sdcard_cfg_write(struct brcmf_sdio_dev *sdiodev, uint fnc_num, u32 addr,
227 if (retry) /* wait for 1 ms till bus get settled down */
230 brcmf_sdioh_cfg_write(sdiodev, fnc_num, addr,
233 && (retry++ < SDIOH_API_ACCESS_RETRY_LIMIT));
237 BRCMF_INFO(("%s:fun = %d, addr = 0x%x, u8data = 0x%x\n",
238 __func__, fnc_num, addr, data));
241 int brcmf_sdcard_cis_read(struct brcmf_sdio_dev *sdiodev, uint func, u8 * cis,
246 u8 *tmp_buf, *tmp_ptr;
248 bool ascii = func & ~0xf;
251 status = brcmf_sdioh_cis_read(sdiodev, func, cis, length);
254 /* Move binary bits to tmp and format them
255 into the provided buffer. */
256 tmp_buf = kmalloc(length, GFP_ATOMIC);
257 if (tmp_buf == NULL) {
258 BRCMF_ERROR(("%s: out of memory\n", __func__));
261 memcpy(tmp_buf, cis, length);
262 for (tmp_ptr = tmp_buf, ptr = cis; ptr < (cis + length - 4);
264 ptr += sprintf((char *)ptr, "%.2x ", *tmp_ptr & 0xff);
265 if ((((tmp_ptr - tmp_buf) + 1) & 0xf) == 0)
266 ptr += sprintf((char *)ptr, "\n");
275 brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
278 brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW,
279 (address >> 8) & SBSDIO_SBADDRLOW_MASK, &err);
281 brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
282 SBSDIO_FUNC1_SBADDRMID,
283 (address >> 16) & SBSDIO_SBADDRMID_MASK,
286 brcmf_sdcard_cfg_write(sdiodev, SDIO_FUNC_1,
287 SBSDIO_FUNC1_SBADDRHIGH,
288 (address >> 24) & SBSDIO_SBADDRHIGH_MASK,
294 u32 brcmf_sdcard_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size)
298 uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
300 BRCMF_INFO(("%s:fun = 1, addr = 0x%x, ", __func__, addr));
302 if (bar0 != sdiodev->sbwad) {
303 if (brcmf_sdcard_set_sbaddr_window(sdiodev, bar0))
306 sdiodev->sbwad = bar0;
309 addr &= SBSDIO_SB_OFT_ADDR_MASK;
311 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
313 status = brcmf_sdioh_request_word(sdiodev, SDIOH_CMD_TYPE_NORMAL,
314 SDIOH_READ, SDIO_FUNC_1, addr, &word, size);
316 sdiodev->regfail = (status != 0);
318 BRCMF_INFO(("u32data = 0x%x\n", word));
320 /* if ok, return appropriately masked word */
326 return word & 0xffff;
330 sdiodev->regfail = true;
335 /* otherwise, bad sdio access or invalid size */
336 BRCMF_ERROR(("%s: error reading addr 0x%04x size %d\n", __func__,
341 u32 brcmf_sdcard_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr, uint size,
345 uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
348 BRCMF_INFO(("%s:fun = 1, addr = 0x%x, uint%ddata = 0x%x\n",
349 __func__, addr, size * 8, data));
351 if (bar0 != sdiodev->sbwad) {
352 err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
356 sdiodev->sbwad = bar0;
359 addr &= SBSDIO_SB_OFT_ADDR_MASK;
361 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
363 brcmf_sdioh_request_word(sdiodev, SDIOH_CMD_TYPE_NORMAL,
364 SDIOH_WRITE, SDIO_FUNC_1, addr, &data, size);
365 sdiodev->regfail = (status != 0);
370 BRCMF_ERROR(("%s: error writing 0x%08x to addr 0x%04x size %d\n",
371 __func__, data, addr, size));
375 bool brcmf_sdcard_regfail(struct brcmf_sdio_dev *sdiodev)
377 return sdiodev->regfail;
381 brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
383 u8 *buf, uint nbytes, struct sk_buff *pkt,
384 void (*complete)(void *handle, int status,
391 uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
394 BRCMF_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
395 __func__, fn, addr, nbytes));
397 /* Async not implemented yet */
398 if (flags & SDIO_REQ_ASYNC)
401 if (bar0 != sdiodev->sbwad) {
402 err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
406 sdiodev->sbwad = bar0;
409 addr &= SBSDIO_SB_OFT_ADDR_MASK;
411 incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
412 width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
414 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
416 status = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_PIO,
417 incr_fix, SDIOH_READ, fn, addr, width, nbytes, buf, pkt);
423 brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn,
424 uint flags, u8 *buf, uint nbytes, void *pkt,
425 void (*complete)(void *handle, int status,
431 uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK;
434 BRCMF_INFO(("%s:fun = %d, addr = 0x%x, size = %d\n",
435 __func__, fn, addr, nbytes));
437 /* Async not implemented yet */
438 if (flags & SDIO_REQ_ASYNC)
441 if (bar0 != sdiodev->sbwad) {
442 err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0);
446 sdiodev->sbwad = bar0;
449 addr &= SBSDIO_SB_OFT_ADDR_MASK;
451 incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC;
452 width = (flags & SDIO_REQ_4BYTE) ? 4 : 2;
454 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
456 return brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_PIO,
457 incr_fix, SDIOH_WRITE, fn, addr, width, nbytes, buf, pkt);
460 int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr,
461 u8 *buf, uint nbytes)
463 addr &= SBSDIO_SB_OFT_ADDR_MASK;
464 addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
466 return brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_PIO,
467 SDIOH_DATA_INC, (rw ? SDIOH_WRITE : SDIOH_READ), SDIO_FUNC_1,
468 addr, 4, nbytes, buf, NULL);
471 int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
473 return brcmf_sdioh_abort(sdiodev, fn);
476 u32 brcmf_sdcard_cur_sbwad(struct brcmf_sdio_dev *sdiodev)
478 return sdiodev->sbwad;
481 int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev)
486 ret = brcmf_sdioh_attach(sdiodev);
492 /* Report the BAR, to fix if needed */
493 sdiodev->sbwad = SI_ENUM_BASE;
495 /* try to attach to the target device */
496 sdiodev->bus = brcmf_sdbrcm_probe(0, 0, 0, 0, regs, sdiodev);
498 BRCMF_ERROR(("%s: device attach failed\n", __func__));
505 brcmf_sdio_remove(sdiodev);
509 EXPORT_SYMBOL(brcmf_sdio_probe);
511 int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev)
514 brcmf_sdbrcm_disconnect(sdiodev->bus);
518 brcmf_sdioh_detach(sdiodev);
524 EXPORT_SYMBOL(brcmf_sdio_remove);
526 int brcmf_sdio_register(void)
528 return brcmf_sdio_function_init();
531 void brcmf_sdio_unregister(void)
533 brcmf_sdio_function_cleanup();
536 void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable)
539 brcmf_sdbrcm_wd_timer(sdiodev->bus, brcmf_watchdog_ms);
541 brcmf_sdbrcm_wd_timer(sdiodev->bus, 0);