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.
17 #include <linux/types.h>
18 #include <linux/netdevice.h>
19 #include <linux/mmc/sdio.h>
20 #include <linux/mmc/core.h>
21 #include <linux/mmc/sdio_func.h>
22 #include <linux/mmc/sdio_ids.h>
23 #include <linux/mmc/card.h>
24 #include <linux/mmc/host.h>
25 #include <linux/suspend.h>
26 #include <linux/errno.h>
27 #include <linux/sched.h> /* request_irq() */
28 #include <linux/module.h>
29 #include <linux/platform_device.h>
30 #include <linux/platform_data/brcmfmac-sdio.h>
31 #include <net/cfg80211.h>
34 #include <brcm_hw_ids.h>
35 #include <brcmu_utils.h>
36 #include <brcmu_wifi.h>
37 #include "sdio_host.h"
38 #include "sdio_chip.h"
42 #define SDIO_VENDOR_ID_BROADCOM 0x02d0
44 #define DMA_ALIGN_MASK 0x03
46 #define SDIO_FUNC1_BLOCKSIZE 64
47 #define SDIO_FUNC2_BLOCKSIZE 512
49 /* devices we support, null terminated */
50 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
51 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)},
52 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)},
53 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)},
54 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)},
55 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)},
56 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM,
57 SDIO_DEVICE_ID_BROADCOM_4335_4339)},
58 { /* end: all zeroes */ },
60 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
62 static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
66 brcmf_pm_resume_error(struct brcmf_sdio_dev *sdiodev)
69 #ifdef CONFIG_PM_SLEEP
70 is_err = atomic_read(&sdiodev->suspend);
76 brcmf_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, wait_queue_head_t *wq)
78 #ifdef CONFIG_PM_SLEEP
80 while (atomic_read(&sdiodev->suspend) && retry++ != 30)
81 wait_event_timeout(*wq, false, HZ/100);
85 static inline int brcmf_sdioh_f0_write_byte(struct brcmf_sdio_dev *sdiodev,
86 uint regaddr, u8 *byte)
88 struct sdio_func *sdfunc = sdiodev->func[0];
92 * Can only directly write to some F0 registers.
93 * Handle F2 enable/disable and Abort command
96 if (regaddr == SDIO_CCCR_IOEx) {
97 sdfunc = sdiodev->func[2];
99 if (*byte & SDIO_FUNC_ENABLE_2) {
100 /* Enable Function 2 */
101 err_ret = sdio_enable_func(sdfunc);
103 brcmf_err("enable F2 failed:%d\n",
106 /* Disable Function 2 */
107 err_ret = sdio_disable_func(sdfunc);
109 brcmf_err("Disable F2 failed:%d\n",
113 } else if ((regaddr == SDIO_CCCR_ABORT) ||
114 (regaddr == SDIO_CCCR_IENx)) {
115 sdfunc = kmemdup(sdiodev->func[0], sizeof(struct sdio_func),
120 sdio_writeb(sdfunc, *byte, regaddr, &err_ret);
122 } else if (regaddr < 0xF0) {
123 brcmf_err("F0 Wr:0x%02x: write disallowed\n", regaddr);
126 sdio_f0_writeb(sdfunc, *byte, regaddr, &err_ret);
132 int brcmf_sdioh_request_byte(struct brcmf_sdio_dev *sdiodev, uint rw, uint func,
133 uint regaddr, u8 *byte)
137 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x\n", rw, func, regaddr);
139 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_byte_wait);
140 if (brcmf_pm_resume_error(sdiodev))
143 if (rw && func == 0) {
144 /* handle F0 separately */
145 err_ret = brcmf_sdioh_f0_write_byte(sdiodev, regaddr, byte);
147 if (rw) /* CMD52 Write */
148 sdio_writeb(sdiodev->func[func], *byte, regaddr,
150 else if (func == 0) {
151 *byte = sdio_f0_readb(sdiodev->func[func], regaddr,
154 *byte = sdio_readb(sdiodev->func[func], regaddr,
161 * SleepCSR register access can fail when
162 * waking up the device so reduce this noise
165 if (regaddr != SBSDIO_FUNC1_SLEEPCSR)
166 brcmf_err("Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
167 rw ? "write" : "read", func, regaddr, *byte,
170 brcmf_dbg(SDIO, "Failed to %s byte F%d:@0x%05x=%02x, Err: %d\n",
171 rw ? "write" : "read", func, regaddr, *byte,
177 int brcmf_sdioh_request_word(struct brcmf_sdio_dev *sdiodev,
178 uint rw, uint func, uint addr, u32 *word,
184 brcmf_err("Only CMD52 allowed to F0\n");
188 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
189 rw, func, addr, nbytes);
191 brcmf_pm_resume_wait(sdiodev, &sdiodev->request_word_wait);
192 if (brcmf_pm_resume_error(sdiodev))
195 if (rw) { /* CMD52 Write */
197 sdio_writel(sdiodev->func[func], *word, addr,
199 else if (nbytes == 2)
200 sdio_writew(sdiodev->func[func], (*word & 0xFFFF),
203 brcmf_err("Invalid nbytes: %d\n", nbytes);
204 } else { /* CMD52 Read */
206 *word = sdio_readl(sdiodev->func[func], addr, &err_ret);
207 else if (nbytes == 2)
208 *word = sdio_readw(sdiodev->func[func], addr,
211 brcmf_err("Invalid nbytes: %d\n", nbytes);
215 brcmf_err("Failed to %s word, Err: 0x%08x\n",
216 rw ? "write" : "read", err_ret);
221 static int brcmf_sdioh_get_cisaddr(struct brcmf_sdio_dev *sdiodev, u32 regaddr)
223 /* read 24 bits and return valid 17 bit addr */
225 u32 scratch, regdata;
227 u8 *ptr = (u8 *)&scratch_le;
229 for (i = 0; i < 3; i++) {
230 regdata = brcmf_sdio_regrl(sdiodev, regaddr, &ret);
232 brcmf_err("Can't read!\n");
234 *ptr++ = (u8) regdata;
238 /* Only the lower 17-bits are valid */
239 scratch = le32_to_cpu(scratch_le);
240 scratch &= 0x0001FFFF;
244 static int brcmf_sdioh_enablefuncs(struct brcmf_sdio_dev *sdiodev)
250 brcmf_dbg(SDIO, "\n");
252 /* Get the Card's common CIS address */
253 sdiodev->func_cis_ptr[0] = brcmf_sdioh_get_cisaddr(sdiodev,
255 brcmf_dbg(SDIO, "Card's Common CIS Ptr = 0x%x\n",
256 sdiodev->func_cis_ptr[0]);
258 /* Get the Card's function CIS (for each function) */
259 for (fbraddr = SDIO_FBR_BASE(1), func = 1;
260 func <= sdiodev->num_funcs; func++, fbraddr += SDIOD_FBR_SIZE) {
261 sdiodev->func_cis_ptr[func] =
262 brcmf_sdioh_get_cisaddr(sdiodev, SDIO_FBR_CIS + fbraddr);
263 brcmf_dbg(SDIO, "Function %d CIS Ptr = 0x%x\n",
264 func, sdiodev->func_cis_ptr[func]);
267 /* Enable Function 1 */
268 err_ret = sdio_enable_func(sdiodev->func[1]);
270 brcmf_err("Failed to enable F1 Err: 0x%08x\n", err_ret);
276 * Public entry points & extern's
278 int brcmf_sdioh_attach(struct brcmf_sdio_dev *sdiodev)
282 brcmf_dbg(SDIO, "\n");
284 sdiodev->num_funcs = 2;
286 sdio_claim_host(sdiodev->func[1]);
288 err_ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
290 brcmf_err("Failed to set F1 blocksize\n");
294 err_ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
296 brcmf_err("Failed to set F2 blocksize\n");
300 brcmf_sdioh_enablefuncs(sdiodev);
303 sdio_release_host(sdiodev->func[1]);
304 brcmf_dbg(SDIO, "Done\n");
308 void brcmf_sdioh_detach(struct brcmf_sdio_dev *sdiodev)
310 brcmf_dbg(SDIO, "\n");
312 /* Disable Function 2 */
313 sdio_claim_host(sdiodev->func[2]);
314 sdio_disable_func(sdiodev->func[2]);
315 sdio_release_host(sdiodev->func[2]);
317 /* Disable Function 1 */
318 sdio_claim_host(sdiodev->func[1]);
319 sdio_disable_func(sdiodev->func[1]);
320 sdio_release_host(sdiodev->func[1]);
324 static int brcmf_ops_sdio_probe(struct sdio_func *func,
325 const struct sdio_device_id *id)
328 struct brcmf_sdio_dev *sdiodev;
329 struct brcmf_bus *bus_if;
330 struct mmc_host *host;
333 brcmf_dbg(SDIO, "Enter\n");
334 brcmf_dbg(SDIO, "Class=%x\n", func->class);
335 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
336 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
337 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
339 /* Consume func num 1 but dont do anything with it. */
343 /* Ignore anything but func 2 */
347 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
350 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
356 sdiodev->func[0] = func->card->sdio_func[0];
357 sdiodev->func[1] = func->card->sdio_func[0];
358 sdiodev->func[2] = func;
360 sdiodev->bus_if = bus_if;
361 bus_if->bus_priv.sdio = sdiodev;
362 dev_set_drvdata(&func->dev, bus_if);
363 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
364 sdiodev->dev = &sdiodev->func[1]->dev;
365 sdiodev->pdata = brcmfmac_sdio_pdata;
367 atomic_set(&sdiodev->suspend, false);
368 init_waitqueue_head(&sdiodev->request_byte_wait);
369 init_waitqueue_head(&sdiodev->request_word_wait);
370 init_waitqueue_head(&sdiodev->request_buffer_wait);
372 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdio_probe...\n");
373 err = brcmf_sdio_probe(sdiodev);
375 brcmf_err("F2 error, probe failed %d...\n", err);
380 * determine host related variables after brcmf_sdio_probe()
381 * as func->cur_blksize is properly set and F2 init has been
382 * completed successfully.
384 host = func->card->host;
385 sdiodev->sg_support = host->max_segs > 1;
386 max_blocks = min_t(uint, host->max_blk_count, 511u);
387 sdiodev->max_request_size = min_t(uint, host->max_req_size,
388 max_blocks * func->cur_blksize);
389 sdiodev->max_segment_count = min_t(uint, host->max_segs,
390 SG_MAX_SINGLE_ALLOC);
391 sdiodev->max_segment_size = host->max_seg_size;
392 brcmf_dbg(SDIO, "F2 init completed...\n");
396 dev_set_drvdata(&func->dev, NULL);
397 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
403 static void brcmf_ops_sdio_remove(struct sdio_func *func)
405 struct brcmf_bus *bus_if;
406 struct brcmf_sdio_dev *sdiodev;
408 brcmf_dbg(SDIO, "Enter\n");
409 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
410 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
411 brcmf_dbg(SDIO, "Function: %d\n", func->num);
413 if (func->num != 1 && func->num != 2)
416 bus_if = dev_get_drvdata(&func->dev);
418 sdiodev = bus_if->bus_priv.sdio;
419 brcmf_sdio_remove(sdiodev);
421 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
422 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
428 brcmf_dbg(SDIO, "Exit\n");
431 #ifdef CONFIG_PM_SLEEP
432 static int brcmf_sdio_suspend(struct device *dev)
434 mmc_pm_flag_t sdio_flags;
435 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
436 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
439 brcmf_dbg(SDIO, "\n");
441 atomic_set(&sdiodev->suspend, true);
443 sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]);
444 if (!(sdio_flags & MMC_PM_KEEP_POWER)) {
445 brcmf_err("Host can't keep power while suspended\n");
449 ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER);
451 brcmf_err("Failed to set pm_flags\n");
455 brcmf_sdio_wdtmr_enable(sdiodev, false);
460 static int brcmf_sdio_resume(struct device *dev)
462 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
463 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
465 brcmf_sdio_wdtmr_enable(sdiodev, true);
466 atomic_set(&sdiodev->suspend, false);
470 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
471 .suspend = brcmf_sdio_suspend,
472 .resume = brcmf_sdio_resume,
474 #endif /* CONFIG_PM_SLEEP */
476 static struct sdio_driver brcmf_sdmmc_driver = {
477 .probe = brcmf_ops_sdio_probe,
478 .remove = brcmf_ops_sdio_remove,
479 .name = BRCMFMAC_SDIO_PDATA_NAME,
480 .id_table = brcmf_sdmmc_ids,
481 #ifdef CONFIG_PM_SLEEP
483 .pm = &brcmf_sdio_pm_ops,
485 #endif /* CONFIG_PM_SLEEP */
488 static int brcmf_sdio_pd_probe(struct platform_device *pdev)
490 brcmf_dbg(SDIO, "Enter\n");
492 brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
494 if (brcmfmac_sdio_pdata->power_on)
495 brcmfmac_sdio_pdata->power_on();
500 static int brcmf_sdio_pd_remove(struct platform_device *pdev)
502 brcmf_dbg(SDIO, "Enter\n");
504 if (brcmfmac_sdio_pdata->power_off)
505 brcmfmac_sdio_pdata->power_off();
507 sdio_unregister_driver(&brcmf_sdmmc_driver);
512 static struct platform_driver brcmf_sdio_pd = {
513 .remove = brcmf_sdio_pd_remove,
515 .name = BRCMFMAC_SDIO_PDATA_NAME,
516 .owner = THIS_MODULE,
520 void brcmf_sdio_register(void)
524 ret = sdio_register_driver(&brcmf_sdmmc_driver);
526 brcmf_err("sdio_register_driver failed: %d\n", ret);
529 void brcmf_sdio_exit(void)
531 brcmf_dbg(SDIO, "Enter\n");
533 if (brcmfmac_sdio_pdata)
534 platform_driver_unregister(&brcmf_sdio_pd);
536 sdio_unregister_driver(&brcmf_sdmmc_driver);
539 void __init brcmf_sdio_init(void)
543 brcmf_dbg(SDIO, "Enter\n");
545 ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
547 brcmf_dbg(SDIO, "No platform data available.\n");