Version:  2.0.40 2.2.26 2.4.37 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1

Linux/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c

  1 /*
  2  * Copyright (c) 2010 Broadcom Corporation
  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 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.
 15  */
 16 /* ****************** SDIO CARD Interface Functions **************************/
 17 
 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/scatterlist.h>
 25 #include <linux/mmc/sdio.h>
 26 #include <linux/mmc/core.h>
 27 #include <linux/mmc/sdio_func.h>
 28 #include <linux/mmc/card.h>
 29 #include <linux/mmc/host.h>
 30 #include <linux/platform_device.h>
 31 #include <linux/platform_data/brcmfmac-sdio.h>
 32 #include <linux/pm_runtime.h>
 33 #include <linux/suspend.h>
 34 #include <linux/errno.h>
 35 #include <linux/module.h>
 36 #include <net/cfg80211.h>
 37 
 38 #include <defs.h>
 39 #include <brcm_hw_ids.h>
 40 #include <brcmu_utils.h>
 41 #include <brcmu_wifi.h>
 42 #include <chipcommon.h>
 43 #include <soc.h>
 44 #include "chip.h"
 45 #include "bus.h"
 46 #include "debug.h"
 47 #include "sdio.h"
 48 #include "of.h"
 49 
 50 #define SDIOH_API_ACCESS_RETRY_LIMIT    2
 51 
 52 #define DMA_ALIGN_MASK  0x03
 53 
 54 #define SDIO_FUNC1_BLOCKSIZE            64
 55 #define SDIO_FUNC2_BLOCKSIZE            512
 56 /* Maximum milliseconds to wait for F2 to come up */
 57 #define SDIO_WAIT_F2RDY 3000
 58 
 59 #define BRCMF_DEFAULT_TXGLOM_SIZE       32  /* max tx frames in glom chain */
 60 #define BRCMF_DEFAULT_RXGLOM_SIZE       32  /* max rx frames in glom chain */
 61 
 62 struct brcmf_sdiod_freezer {
 63         atomic_t freezing;
 64         atomic_t thread_count;
 65         u32 frozen_count;
 66         wait_queue_head_t thread_freeze;
 67         struct completion resumed;
 68 };
 69 
 70 static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE;
 71 module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0);
 72 MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]");
 73 
 74 static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
 75 {
 76         struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
 77         struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
 78 
 79         brcmf_dbg(INTR, "OOB intr triggered\n");
 80 
 81         /* out-of-band interrupt is level-triggered which won't
 82          * be cleared until dpc
 83          */
 84         if (sdiodev->irq_en) {
 85                 disable_irq_nosync(irq);
 86                 sdiodev->irq_en = false;
 87         }
 88 
 89         brcmf_sdio_isr(sdiodev->bus);
 90 
 91         return IRQ_HANDLED;
 92 }
 93 
 94 static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
 95 {
 96         struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
 97         struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
 98 
 99         brcmf_dbg(INTR, "IB intr triggered\n");
100 
101         brcmf_sdio_isr(sdiodev->bus);
102 }
103 
104 /* dummy handler for SDIO function 2 interrupt */
105 static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
106 {
107 }
108 
109 int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
110 {
111         int ret = 0;
112         u8 data;
113         u32 addr, gpiocontrol;
114         unsigned long flags;
115 
116         if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
117                 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
118                           sdiodev->pdata->oob_irq_nr);
119                 ret = request_irq(sdiodev->pdata->oob_irq_nr,
120                                   brcmf_sdiod_oob_irqhandler,
121                                   sdiodev->pdata->oob_irq_flags,
122                                   "brcmf_oob_intr",
123                                   &sdiodev->func[1]->dev);
124                 if (ret != 0) {
125                         brcmf_err("request_irq failed %d\n", ret);
126                         return ret;
127                 }
128                 sdiodev->oob_irq_requested = true;
129                 spin_lock_init(&sdiodev->irq_en_lock);
130                 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
131                 sdiodev->irq_en = true;
132                 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
133 
134                 ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr);
135                 if (ret != 0) {
136                         brcmf_err("enable_irq_wake failed %d\n", ret);
137                         return ret;
138                 }
139                 sdiodev->irq_wake = true;
140 
141                 sdio_claim_host(sdiodev->func[1]);
142 
143                 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) {
144                         /* assign GPIO to SDIO core */
145                         addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol);
146                         gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret);
147                         gpiocontrol |= 0x2;
148                         brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret);
149 
150                         brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf,
151                                           &ret);
152                         brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret);
153                         brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret);
154                 }
155 
156                 /* must configure SDIO_CCCR_IENx to enable irq */
157                 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
158                 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
159                 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
160 
161                 /* redirect, configure and enable io for interrupt signal */
162                 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
163                 if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
164                         data |= SDIO_SEPINT_ACT_HI;
165                 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
166 
167                 sdio_release_host(sdiodev->func[1]);
168         } else {
169                 brcmf_dbg(SDIO, "Entering\n");
170                 sdio_claim_host(sdiodev->func[1]);
171                 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler);
172                 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler);
173                 sdio_release_host(sdiodev->func[1]);
174         }
175 
176         return 0;
177 }
178 
179 int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
180 {
181         brcmf_dbg(SDIO, "Entering\n");
182 
183         if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
184                 sdio_claim_host(sdiodev->func[1]);
185                 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
186                 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
187                 sdio_release_host(sdiodev->func[1]);
188 
189                 if (sdiodev->oob_irq_requested) {
190                         sdiodev->oob_irq_requested = false;
191                         if (sdiodev->irq_wake) {
192                                 disable_irq_wake(sdiodev->pdata->oob_irq_nr);
193                                 sdiodev->irq_wake = false;
194                         }
195                         free_irq(sdiodev->pdata->oob_irq_nr,
196                                  &sdiodev->func[1]->dev);
197                         sdiodev->irq_en = false;
198                 }
199         } else {
200                 sdio_claim_host(sdiodev->func[1]);
201                 sdio_release_irq(sdiodev->func[2]);
202                 sdio_release_irq(sdiodev->func[1]);
203                 sdio_release_host(sdiodev->func[1]);
204         }
205 
206         return 0;
207 }
208 
209 void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
210                               enum brcmf_sdiod_state state)
211 {
212         if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM ||
213             state == sdiodev->state)
214                 return;
215 
216         brcmf_dbg(TRACE, "%d -> %d\n", sdiodev->state, state);
217         switch (sdiodev->state) {
218         case BRCMF_SDIOD_DATA:
219                 /* any other state means bus interface is down */
220                 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
221                 break;
222         case BRCMF_SDIOD_DOWN:
223                 /* transition from DOWN to DATA means bus interface is up */
224                 if (state == BRCMF_SDIOD_DATA)
225                         brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_UP);
226                 break;
227         default:
228                 break;
229         }
230         sdiodev->state = state;
231 }
232 
233 static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func,
234                                         uint regaddr, u8 byte)
235 {
236         int err_ret;
237 
238         /*
239          * Can only directly write to some F0 registers.
240          * Handle CCCR_IENx and CCCR_ABORT command
241          * as a special case.
242          */
243         if ((regaddr == SDIO_CCCR_ABORT) ||
244             (regaddr == SDIO_CCCR_IENx))
245                 sdio_writeb(func, byte, regaddr, &err_ret);
246         else
247                 sdio_f0_writeb(func, byte, regaddr, &err_ret);
248 
249         return err_ret;
250 }
251 
252 static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
253                                     u32 addr, u8 regsz, void *data, bool write)
254 {
255         struct sdio_func *func;
256         int ret;
257 
258         brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
259                   write, fn, addr, regsz);
260 
261         /* only allow byte access on F0 */
262         if (WARN_ON(regsz > 1 && !fn))
263                 return -EINVAL;
264         func = sdiodev->func[fn];
265 
266         switch (regsz) {
267         case sizeof(u8):
268                 if (write) {
269                         if (fn)
270                                 sdio_writeb(func, *(u8 *)data, addr, &ret);
271                         else
272                                 ret = brcmf_sdiod_f0_writeb(func, addr,
273                                                             *(u8 *)data);
274                 } else {
275                         if (fn)
276                                 *(u8 *)data = sdio_readb(func, addr, &ret);
277                         else
278                                 *(u8 *)data = sdio_f0_readb(func, addr, &ret);
279                 }
280                 break;
281         case sizeof(u16):
282                 if (write)
283                         sdio_writew(func, *(u16 *)data, addr, &ret);
284                 else
285                         *(u16 *)data = sdio_readw(func, addr, &ret);
286                 break;
287         case sizeof(u32):
288                 if (write)
289                         sdio_writel(func, *(u32 *)data, addr, &ret);
290                 else
291                         *(u32 *)data = sdio_readl(func, addr, &ret);
292                 break;
293         default:
294                 brcmf_err("invalid size: %d\n", regsz);
295                 break;
296         }
297 
298         if (ret)
299                 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
300                           write ? "write" : "read", fn, addr, ret);
301 
302         return ret;
303 }
304 
305 static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
306                                    u8 regsz, void *data, bool write)
307 {
308         u8 func;
309         s32 retry = 0;
310         int ret;
311 
312         if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
313                 return -ENOMEDIUM;
314 
315         /*
316          * figure out how to read the register based on address range
317          * 0x00 ~ 0x7FF: function 0 CCCR and FBR
318          * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
319          * The rest: function 1 silicon backplane core registers
320          */
321         if ((addr & ~REG_F0_REG_MASK) == 0)
322                 func = SDIO_FUNC_0;
323         else
324                 func = SDIO_FUNC_1;
325 
326         do {
327                 if (!write)
328                         memset(data, 0, regsz);
329                 /* for retry wait for 1 ms till bus get settled down */
330                 if (retry)
331                         usleep_range(1000, 2000);
332                 ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz,
333                                                data, write);
334         } while (ret != 0 && ret != -ENOMEDIUM &&
335                  retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
336 
337         if (ret == -ENOMEDIUM)
338                 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
339         else if (ret != 0) {
340                 /*
341                  * SleepCSR register access can fail when
342                  * waking up the device so reduce this noise
343                  * in the logs.
344                  */
345                 if (addr != SBSDIO_FUNC1_SLEEPCSR)
346                         brcmf_err("failed to %s data F%d@0x%05x, err: %d\n",
347                                   write ? "write" : "read", func, addr, ret);
348                 else
349                         brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
350                                   write ? "write" : "read", func, addr, ret);
351         }
352         return ret;
353 }
354 
355 static int
356 brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
357 {
358         int err = 0, i;
359         u8 addr[3];
360 
361         if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
362                 return -ENOMEDIUM;
363 
364         addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
365         addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
366         addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
367 
368         for (i = 0; i < 3; i++) {
369                 err = brcmf_sdiod_regrw_helper(sdiodev,
370                                                SBSDIO_FUNC1_SBADDRLOW + i,
371                                                sizeof(u8), &addr[i], true);
372                 if (err) {
373                         brcmf_err("failed at addr: 0x%0x\n",
374                                   SBSDIO_FUNC1_SBADDRLOW + i);
375                         break;
376                 }
377         }
378 
379         return err;
380 }
381 
382 static int
383 brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
384 {
385         uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
386         int err = 0;
387 
388         if (bar0 != sdiodev->sbwad) {
389                 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
390                 if (err)
391                         return err;
392 
393                 sdiodev->sbwad = bar0;
394         }
395 
396         *addr &= SBSDIO_SB_OFT_ADDR_MASK;
397 
398         if (width == 4)
399                 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
400 
401         return 0;
402 }
403 
404 u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
405 {
406         u8 data;
407         int retval;
408 
409         brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
410         retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
411                                           false);
412         brcmf_dbg(SDIO, "data:0x%02x\n", data);
413 
414         if (ret)
415                 *ret = retval;
416 
417         return data;
418 }
419 
420 u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
421 {
422         u32 data;
423         int retval;
424 
425         brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
426         retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
427         if (retval)
428                 goto done;
429         retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
430                                           false);
431         brcmf_dbg(SDIO, "data:0x%08x\n", data);
432 
433 done:
434         if (ret)
435                 *ret = retval;
436 
437         return data;
438 }
439 
440 void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
441                       u8 data, int *ret)
442 {
443         int retval;
444 
445         brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
446         retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
447                                           true);
448         if (ret)
449                 *ret = retval;
450 }
451 
452 void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
453                       u32 data, int *ret)
454 {
455         int retval;
456 
457         brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
458         retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
459         if (retval)
460                 goto done;
461         retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
462                                           true);
463 
464 done:
465         if (ret)
466                 *ret = retval;
467 }
468 
469 static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
470                              bool write, u32 addr, struct sk_buff *pkt)
471 {
472         unsigned int req_sz;
473         int err;
474 
475         /* Single skb use the standard mmc interface */
476         req_sz = pkt->len + 3;
477         req_sz &= (uint)~3;
478 
479         if (write)
480                 err = sdio_memcpy_toio(sdiodev->func[fn], addr,
481                                        ((u8 *)(pkt->data)), req_sz);
482         else if (fn == 1)
483                 err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)),
484                                          addr, req_sz);
485         else
486                 /* function 2 read is FIFO operation */
487                 err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr,
488                                   req_sz);
489         if (err == -ENOMEDIUM)
490                 brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
491         return err;
492 }
493 
494 /**
495  * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
496  * @sdiodev: brcmfmac sdio device
497  * @fn: SDIO function number
498  * @write: direction flag
499  * @addr: dongle memory address as source/destination
500  * @pkt: skb pointer
501  *
502  * This function takes the respbonsibility as the interface function to MMC
503  * stack for block data access. It assumes that the skb passed down by the
504  * caller has already been padded and aligned.
505  */
506 static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
507                                  bool write, u32 addr,
508                                  struct sk_buff_head *pktlist)
509 {
510         unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
511         unsigned int max_req_sz, orig_offset, dst_offset;
512         unsigned short max_seg_cnt, seg_sz;
513         unsigned char *pkt_data, *orig_data, *dst_data;
514         struct sk_buff *pkt_next = NULL, *local_pkt_next;
515         struct sk_buff_head local_list, *target_list;
516         struct mmc_request mmc_req;
517         struct mmc_command mmc_cmd;
518         struct mmc_data mmc_dat;
519         struct scatterlist *sgl;
520         int ret = 0;
521 
522         if (!pktlist->qlen)
523                 return -EINVAL;
524 
525         target_list = pktlist;
526         /* for host with broken sg support, prepare a page aligned list */
527         __skb_queue_head_init(&local_list);
528         if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
529                 req_sz = 0;
530                 skb_queue_walk(pktlist, pkt_next)
531                         req_sz += pkt_next->len;
532                 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
533                 while (req_sz > PAGE_SIZE) {
534                         pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
535                         if (pkt_next == NULL) {
536                                 ret = -ENOMEM;
537                                 goto exit;
538                         }
539                         __skb_queue_tail(&local_list, pkt_next);
540                         req_sz -= PAGE_SIZE;
541                 }
542                 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
543                 if (pkt_next == NULL) {
544                         ret = -ENOMEM;
545                         goto exit;
546                 }
547                 __skb_queue_tail(&local_list, pkt_next);
548                 target_list = &local_list;
549         }
550 
551         func_blk_sz = sdiodev->func[fn]->cur_blksize;
552         max_req_sz = sdiodev->max_request_size;
553         max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
554                             target_list->qlen);
555         seg_sz = target_list->qlen;
556         pkt_offset = 0;
557         pkt_next = target_list->next;
558 
559         memset(&mmc_req, 0, sizeof(struct mmc_request));
560         memset(&mmc_cmd, 0, sizeof(struct mmc_command));
561         memset(&mmc_dat, 0, sizeof(struct mmc_data));
562 
563         mmc_dat.sg = sdiodev->sgtable.sgl;
564         mmc_dat.blksz = func_blk_sz;
565         mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
566         mmc_cmd.opcode = SD_IO_RW_EXTENDED;
567         mmc_cmd.arg = write ? 1<<31 : 0;        /* write flag  */
568         mmc_cmd.arg |= (fn & 0x7) << 28;        /* SDIO func num */
569         mmc_cmd.arg |= 1<<27;                   /* block mode */
570         /* for function 1 the addr will be incremented */
571         mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
572         mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
573         mmc_req.cmd = &mmc_cmd;
574         mmc_req.data = &mmc_dat;
575 
576         while (seg_sz) {
577                 req_sz = 0;
578                 sg_cnt = 0;
579                 sgl = sdiodev->sgtable.sgl;
580                 /* prep sg table */
581                 while (pkt_next != (struct sk_buff *)target_list) {
582                         pkt_data = pkt_next->data + pkt_offset;
583                         sg_data_sz = pkt_next->len - pkt_offset;
584                         if (sg_data_sz > sdiodev->max_segment_size)
585                                 sg_data_sz = sdiodev->max_segment_size;
586                         if (sg_data_sz > max_req_sz - req_sz)
587                                 sg_data_sz = max_req_sz - req_sz;
588 
589                         sg_set_buf(sgl, pkt_data, sg_data_sz);
590 
591                         sg_cnt++;
592                         sgl = sg_next(sgl);
593                         req_sz += sg_data_sz;
594                         pkt_offset += sg_data_sz;
595                         if (pkt_offset == pkt_next->len) {
596                                 pkt_offset = 0;
597                                 pkt_next = pkt_next->next;
598                         }
599 
600                         if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
601                                 break;
602                 }
603                 seg_sz -= sg_cnt;
604 
605                 if (req_sz % func_blk_sz != 0) {
606                         brcmf_err("sg request length %u is not %u aligned\n",
607                                   req_sz, func_blk_sz);
608                         ret = -ENOTBLK;
609                         goto exit;
610                 }
611 
612                 mmc_dat.sg_len = sg_cnt;
613                 mmc_dat.blocks = req_sz / func_blk_sz;
614                 mmc_cmd.arg |= (addr & 0x1FFFF) << 9;   /* address */
615                 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF;  /* block count */
616                 /* incrementing addr for function 1 */
617                 if (fn == 1)
618                         addr += req_sz;
619 
620                 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
621                 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
622 
623                 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
624                 if (ret == -ENOMEDIUM) {
625                         brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
626                         break;
627                 } else if (ret != 0) {
628                         brcmf_err("CMD53 sg block %s failed %d\n",
629                                   write ? "write" : "read", ret);
630                         ret = -EIO;
631                         break;
632                 }
633         }
634 
635         if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
636                 local_pkt_next = local_list.next;
637                 orig_offset = 0;
638                 skb_queue_walk(pktlist, pkt_next) {
639                         dst_offset = 0;
640                         do {
641                                 req_sz = local_pkt_next->len - orig_offset;
642                                 req_sz = min_t(uint, pkt_next->len - dst_offset,
643                                                req_sz);
644                                 orig_data = local_pkt_next->data + orig_offset;
645                                 dst_data = pkt_next->data + dst_offset;
646                                 memcpy(dst_data, orig_data, req_sz);
647                                 orig_offset += req_sz;
648                                 dst_offset += req_sz;
649                                 if (orig_offset == local_pkt_next->len) {
650                                         orig_offset = 0;
651                                         local_pkt_next = local_pkt_next->next;
652                                 }
653                                 if (dst_offset == pkt_next->len)
654                                         break;
655                         } while (!skb_queue_empty(&local_list));
656                 }
657         }
658 
659 exit:
660         sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
661         while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
662                 brcmu_pkt_buf_free_skb(pkt_next);
663 
664         return ret;
665 }
666 
667 int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
668 {
669         struct sk_buff *mypkt;
670         int err;
671 
672         mypkt = brcmu_pkt_buf_get_skb(nbytes);
673         if (!mypkt) {
674                 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
675                           nbytes);
676                 return -EIO;
677         }
678 
679         err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
680         if (!err)
681                 memcpy(buf, mypkt->data, nbytes);
682 
683         brcmu_pkt_buf_free_skb(mypkt);
684         return err;
685 }
686 
687 int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
688 {
689         u32 addr = sdiodev->sbwad;
690         int err = 0;
691 
692         brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
693 
694         err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
695         if (err)
696                 goto done;
697 
698         err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
699 
700 done:
701         return err;
702 }
703 
704 int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
705                            struct sk_buff_head *pktq, uint totlen)
706 {
707         struct sk_buff *glom_skb;
708         struct sk_buff *skb;
709         u32 addr = sdiodev->sbwad;
710         int err = 0;
711 
712         brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
713                   addr, pktq->qlen);
714 
715         err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
716         if (err)
717                 goto done;
718 
719         if (pktq->qlen == 1)
720                 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
721                                          pktq->next);
722         else if (!sdiodev->sg_support) {
723                 glom_skb = brcmu_pkt_buf_get_skb(totlen);
724                 if (!glom_skb)
725                         return -ENOMEM;
726                 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
727                                          glom_skb);
728                 if (err)
729                         goto done;
730 
731                 skb_queue_walk(pktq, skb) {
732                         memcpy(skb->data, glom_skb->data, skb->len);
733                         skb_pull(glom_skb, skb->len);
734                 }
735         } else
736                 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
737                                             pktq);
738 
739 done:
740         return err;
741 }
742 
743 int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
744 {
745         struct sk_buff *mypkt;
746         u32 addr = sdiodev->sbwad;
747         int err;
748 
749         mypkt = brcmu_pkt_buf_get_skb(nbytes);
750         if (!mypkt) {
751                 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
752                           nbytes);
753                 return -EIO;
754         }
755 
756         memcpy(mypkt->data, buf, nbytes);
757 
758         err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
759 
760         if (!err)
761                 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
762                                          mypkt);
763 
764         brcmu_pkt_buf_free_skb(mypkt);
765         return err;
766 
767 }
768 
769 int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
770                          struct sk_buff_head *pktq)
771 {
772         struct sk_buff *skb;
773         u32 addr = sdiodev->sbwad;
774         int err;
775 
776         brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
777 
778         err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
779         if (err)
780                 return err;
781 
782         if (pktq->qlen == 1 || !sdiodev->sg_support)
783                 skb_queue_walk(pktq, skb) {
784                         err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
785                                                  addr, skb);
786                         if (err)
787                                 break;
788                 }
789         else
790                 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
791                                             pktq);
792 
793         return err;
794 }
795 
796 int
797 brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
798                   u8 *data, uint size)
799 {
800         int bcmerror = 0;
801         struct sk_buff *pkt;
802         u32 sdaddr;
803         uint dsize;
804 
805         dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
806         pkt = dev_alloc_skb(dsize);
807         if (!pkt) {
808                 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
809                 return -EIO;
810         }
811         pkt->priority = 0;
812 
813         /* Determine initial transfer parameters */
814         sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
815         if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
816                 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
817         else
818                 dsize = size;
819 
820         sdio_claim_host(sdiodev->func[1]);
821 
822         /* Do the transfer(s) */
823         while (size) {
824                 /* Set the backplane window to include the start address */
825                 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
826                 if (bcmerror)
827                         break;
828 
829                 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
830                           write ? "write" : "read", dsize,
831                           sdaddr, address & SBSDIO_SBWINDOW_MASK);
832 
833                 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
834                 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
835 
836                 skb_put(pkt, dsize);
837                 if (write)
838                         memcpy(pkt->data, data, dsize);
839                 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write,
840                                               sdaddr, pkt);
841                 if (bcmerror) {
842                         brcmf_err("membytes transfer failed\n");
843                         break;
844                 }
845                 if (!write)
846                         memcpy(data, pkt->data, dsize);
847                 skb_trim(pkt, 0);
848 
849                 /* Adjust for next transfer (if any) */
850                 size -= dsize;
851                 if (size) {
852                         data += dsize;
853                         address += dsize;
854                         sdaddr = 0;
855                         dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
856                 }
857         }
858 
859         dev_kfree_skb(pkt);
860 
861         /* Return the window to backplane enumeration space for core access */
862         if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
863                 brcmf_err("FAILED to set window back to 0x%x\n",
864                           sdiodev->sbwad);
865 
866         sdio_release_host(sdiodev->func[1]);
867 
868         return bcmerror;
869 }
870 
871 int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
872 {
873         char t_func = (char)fn;
874         brcmf_dbg(SDIO, "Enter\n");
875 
876         /* issue abort cmd52 command through F0 */
877         brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT,
878                                  sizeof(t_func), &t_func, true);
879 
880         brcmf_dbg(SDIO, "Exit\n");
881         return 0;
882 }
883 
884 static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
885 {
886         uint nents;
887         int err;
888 
889         if (!sdiodev->sg_support)
890                 return;
891 
892         nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, brcmf_sdiod_txglomsz);
893         nents += (nents >> 4) + 1;
894 
895         WARN_ON(nents > sdiodev->max_segment_count);
896 
897         brcmf_dbg(TRACE, "nents=%d\n", nents);
898         err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
899         if (err < 0) {
900                 brcmf_err("allocation failed: disable scatter-gather");
901                 sdiodev->sg_support = false;
902         }
903 
904         sdiodev->txglomsz = brcmf_sdiod_txglomsz;
905 }
906 
907 #ifdef CONFIG_PM_SLEEP
908 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
909 {
910         sdiodev->freezer = kzalloc(sizeof(*sdiodev->freezer), GFP_KERNEL);
911         if (!sdiodev->freezer)
912                 return -ENOMEM;
913         atomic_set(&sdiodev->freezer->thread_count, 0);
914         atomic_set(&sdiodev->freezer->freezing, 0);
915         init_waitqueue_head(&sdiodev->freezer->thread_freeze);
916         init_completion(&sdiodev->freezer->resumed);
917         return 0;
918 }
919 
920 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
921 {
922         if (sdiodev->freezer) {
923                 WARN_ON(atomic_read(&sdiodev->freezer->freezing));
924                 kfree(sdiodev->freezer);
925         }
926 }
927 
928 static int brcmf_sdiod_freezer_on(struct brcmf_sdio_dev *sdiodev)
929 {
930         atomic_t *expect = &sdiodev->freezer->thread_count;
931         int res = 0;
932 
933         sdiodev->freezer->frozen_count = 0;
934         reinit_completion(&sdiodev->freezer->resumed);
935         atomic_set(&sdiodev->freezer->freezing, 1);
936         brcmf_sdio_trigger_dpc(sdiodev->bus);
937         wait_event(sdiodev->freezer->thread_freeze,
938                    atomic_read(expect) == sdiodev->freezer->frozen_count);
939         sdio_claim_host(sdiodev->func[1]);
940         res = brcmf_sdio_sleep(sdiodev->bus, true);
941         sdio_release_host(sdiodev->func[1]);
942         return res;
943 }
944 
945 static void brcmf_sdiod_freezer_off(struct brcmf_sdio_dev *sdiodev)
946 {
947         sdio_claim_host(sdiodev->func[1]);
948         brcmf_sdio_sleep(sdiodev->bus, false);
949         sdio_release_host(sdiodev->func[1]);
950         atomic_set(&sdiodev->freezer->freezing, 0);
951         complete_all(&sdiodev->freezer->resumed);
952 }
953 
954 bool brcmf_sdiod_freezing(struct brcmf_sdio_dev *sdiodev)
955 {
956         return atomic_read(&sdiodev->freezer->freezing);
957 }
958 
959 void brcmf_sdiod_try_freeze(struct brcmf_sdio_dev *sdiodev)
960 {
961         if (!brcmf_sdiod_freezing(sdiodev))
962                 return;
963         sdiodev->freezer->frozen_count++;
964         wake_up(&sdiodev->freezer->thread_freeze);
965         wait_for_completion(&sdiodev->freezer->resumed);
966 }
967 
968 void brcmf_sdiod_freezer_count(struct brcmf_sdio_dev *sdiodev)
969 {
970         atomic_inc(&sdiodev->freezer->thread_count);
971 }
972 
973 void brcmf_sdiod_freezer_uncount(struct brcmf_sdio_dev *sdiodev)
974 {
975         atomic_dec(&sdiodev->freezer->thread_count);
976 }
977 #else
978 static int brcmf_sdiod_freezer_attach(struct brcmf_sdio_dev *sdiodev)
979 {
980         return 0;
981 }
982 
983 static void brcmf_sdiod_freezer_detach(struct brcmf_sdio_dev *sdiodev)
984 {
985 }
986 #endif /* CONFIG_PM_SLEEP */
987 
988 static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
989 {
990         if (sdiodev->bus) {
991                 brcmf_sdio_remove(sdiodev->bus);
992                 sdiodev->bus = NULL;
993         }
994 
995         brcmf_sdiod_freezer_detach(sdiodev);
996 
997         /* Disable Function 2 */
998         sdio_claim_host(sdiodev->func[2]);
999         sdio_disable_func(sdiodev->func[2]);
1000         sdio_release_host(sdiodev->func[2]);
1001 
1002         /* Disable Function 1 */
1003         sdio_claim_host(sdiodev->func[1]);
1004         sdio_disable_func(sdiodev->func[1]);
1005         sdio_release_host(sdiodev->func[1]);
1006 
1007         sg_free_table(&sdiodev->sgtable);
1008         sdiodev->sbwad = 0;
1009 
1010         pm_runtime_allow(sdiodev->func[1]->card->host->parent);
1011         return 0;
1012 }
1013 
1014 static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
1015 {
1016         struct sdio_func *func;
1017         struct mmc_host *host;
1018         uint max_blocks;
1019         int ret = 0;
1020 
1021         sdiodev->num_funcs = 2;
1022 
1023         sdio_claim_host(sdiodev->func[1]);
1024 
1025         ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
1026         if (ret) {
1027                 brcmf_err("Failed to set F1 blocksize\n");
1028                 sdio_release_host(sdiodev->func[1]);
1029                 goto out;
1030         }
1031         ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
1032         if (ret) {
1033                 brcmf_err("Failed to set F2 blocksize\n");
1034                 sdio_release_host(sdiodev->func[1]);
1035                 goto out;
1036         }
1037 
1038         /* increase F2 timeout */
1039         sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY;
1040 
1041         /* Enable Function 1 */
1042         ret = sdio_enable_func(sdiodev->func[1]);
1043         sdio_release_host(sdiodev->func[1]);
1044         if (ret) {
1045                 brcmf_err("Failed to enable F1: err=%d\n", ret);
1046                 goto out;
1047         }
1048 
1049         /*
1050          * determine host related variables after brcmf_sdiod_probe()
1051          * as func->cur_blksize is properly set and F2 init has been
1052          * completed successfully.
1053          */
1054         func = sdiodev->func[2];
1055         host = func->card->host;
1056         sdiodev->sg_support = host->max_segs > 1;
1057         max_blocks = min_t(uint, host->max_blk_count, 511u);
1058         sdiodev->max_request_size = min_t(uint, host->max_req_size,
1059                                           max_blocks * func->cur_blksize);
1060         sdiodev->max_segment_count = min_t(uint, host->max_segs,
1061                                            SG_MAX_SINGLE_ALLOC);
1062         sdiodev->max_segment_size = host->max_seg_size;
1063 
1064         /* allocate scatter-gather table. sg support
1065          * will be disabled upon allocation failure.
1066          */
1067         brcmf_sdiod_sgtable_alloc(sdiodev);
1068 
1069         ret = brcmf_sdiod_freezer_attach(sdiodev);
1070         if (ret)
1071                 goto out;
1072 
1073         /* try to attach to the target device */
1074         sdiodev->bus = brcmf_sdio_probe(sdiodev);
1075         if (!sdiodev->bus) {
1076                 ret = -ENODEV;
1077                 goto out;
1078         }
1079         pm_runtime_forbid(host->parent);
1080 out:
1081         if (ret)
1082                 brcmf_sdiod_remove(sdiodev);
1083 
1084         return ret;
1085 }
1086 
1087 #define BRCMF_SDIO_DEVICE(dev_id)       \
1088         {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
1089 
1090 /* devices we support, null terminated */
1091 static const struct sdio_device_id brcmf_sdmmc_ids[] = {
1092         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143),
1093         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241),
1094         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329),
1095         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330),
1096         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334),
1097         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340),
1098         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341),
1099         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362),
1100         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339),
1101         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43430),
1102         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4345),
1103         BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354),
1104         { /* end: all zeroes */ }
1105 };
1106 MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
1107 
1108 static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
1109 
1110 
1111 static int brcmf_ops_sdio_probe(struct sdio_func *func,
1112                                 const struct sdio_device_id *id)
1113 {
1114         int err;
1115         struct brcmf_sdio_dev *sdiodev;
1116         struct brcmf_bus *bus_if;
1117 
1118         brcmf_dbg(SDIO, "Enter\n");
1119         brcmf_dbg(SDIO, "Class=%x\n", func->class);
1120         brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1121         brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1122         brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1123 
1124         /* Consume func num 1 but dont do anything with it. */
1125         if (func->num == 1)
1126                 return 0;
1127 
1128         /* Ignore anything but func 2 */
1129         if (func->num != 2)
1130                 return -ENODEV;
1131 
1132         bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1133         if (!bus_if)
1134                 return -ENOMEM;
1135         sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1136         if (!sdiodev) {
1137                 kfree(bus_if);
1138                 return -ENOMEM;
1139         }
1140 
1141         /* store refs to functions used. mmc_card does
1142          * not hold the F0 function pointer.
1143          */
1144         sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL);
1145         sdiodev->func[0]->num = 0;
1146         sdiodev->func[1] = func->card->sdio_func[0];
1147         sdiodev->func[2] = func;
1148 
1149         sdiodev->bus_if = bus_if;
1150         bus_if->bus_priv.sdio = sdiodev;
1151         bus_if->proto_type = BRCMF_PROTO_BCDC;
1152         dev_set_drvdata(&func->dev, bus_if);
1153         dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1154         sdiodev->dev = &sdiodev->func[1]->dev;
1155         sdiodev->pdata = brcmfmac_sdio_pdata;
1156 
1157         if (!sdiodev->pdata)
1158                 brcmf_of_probe(sdiodev);
1159 
1160 #ifdef CONFIG_PM_SLEEP
1161         /* wowl can be supported when KEEP_POWER is true and (WAKE_SDIO_IRQ
1162          * is true or when platform data OOB irq is true).
1163          */
1164         if ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_KEEP_POWER) &&
1165             ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_WAKE_SDIO_IRQ) ||
1166              (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)))
1167                 bus_if->wowl_supported = true;
1168 #endif
1169 
1170         brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_DOWN);
1171 
1172         brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1173         err = brcmf_sdiod_probe(sdiodev);
1174         if (err) {
1175                 brcmf_err("F2 error, probe failed %d...\n", err);
1176                 goto fail;
1177         }
1178 
1179         brcmf_dbg(SDIO, "F2 init completed...\n");
1180         return 0;
1181 
1182 fail:
1183         dev_set_drvdata(&func->dev, NULL);
1184         dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1185         kfree(sdiodev->func[0]);
1186         kfree(sdiodev);
1187         kfree(bus_if);
1188         return err;
1189 }
1190 
1191 static void brcmf_ops_sdio_remove(struct sdio_func *func)
1192 {
1193         struct brcmf_bus *bus_if;
1194         struct brcmf_sdio_dev *sdiodev;
1195 
1196         brcmf_dbg(SDIO, "Enter\n");
1197         brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1198         brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1199         brcmf_dbg(SDIO, "Function: %d\n", func->num);
1200 
1201         if (func->num != 1)
1202                 return;
1203 
1204         bus_if = dev_get_drvdata(&func->dev);
1205         if (bus_if) {
1206                 sdiodev = bus_if->bus_priv.sdio;
1207                 brcmf_sdiod_remove(sdiodev);
1208 
1209                 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1210                 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1211 
1212                 kfree(bus_if);
1213                 kfree(sdiodev->func[0]);
1214                 kfree(sdiodev);
1215         }
1216 
1217         brcmf_dbg(SDIO, "Exit\n");
1218 }
1219 
1220 void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1221 {
1222         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1223         struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1224 
1225         brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1226         sdiodev->wowl_enabled = enabled;
1227 }
1228 
1229 #ifdef CONFIG_PM_SLEEP
1230 static int brcmf_ops_sdio_suspend(struct device *dev)
1231 {
1232         struct sdio_func *func;
1233         struct brcmf_bus *bus_if;
1234         struct brcmf_sdio_dev *sdiodev;
1235         mmc_pm_flag_t sdio_flags;
1236 
1237         func = container_of(dev, struct sdio_func, dev);
1238         brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1239         if (func->num != SDIO_FUNC_1)
1240                 return 0;
1241 
1242 
1243         bus_if = dev_get_drvdata(dev);
1244         sdiodev = bus_if->bus_priv.sdio;
1245 
1246         brcmf_sdiod_freezer_on(sdiodev);
1247         brcmf_sdio_wd_timer(sdiodev->bus, 0);
1248 
1249         if (sdiodev->wowl_enabled) {
1250                 sdio_flags = MMC_PM_KEEP_POWER;
1251                 if (sdiodev->pdata->oob_irq_supported)
1252                         enable_irq_wake(sdiodev->pdata->oob_irq_nr);
1253                 else
1254                         sdio_flags = MMC_PM_WAKE_SDIO_IRQ;
1255                 if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags))
1256                         brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
1257         }
1258         return 0;
1259 }
1260 
1261 static int brcmf_ops_sdio_resume(struct device *dev)
1262 {
1263         struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1264         struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1265         struct sdio_func *func = container_of(dev, struct sdio_func, dev);
1266 
1267         brcmf_dbg(SDIO, "Enter: F%d\n", func->num);
1268         if (func->num != SDIO_FUNC_2)
1269                 return 0;
1270 
1271         brcmf_sdiod_freezer_off(sdiodev);
1272         return 0;
1273 }
1274 
1275 static const struct dev_pm_ops brcmf_sdio_pm_ops = {
1276         .suspend        = brcmf_ops_sdio_suspend,
1277         .resume         = brcmf_ops_sdio_resume,
1278 };
1279 #endif  /* CONFIG_PM_SLEEP */
1280 
1281 static struct sdio_driver brcmf_sdmmc_driver = {
1282         .probe = brcmf_ops_sdio_probe,
1283         .remove = brcmf_ops_sdio_remove,
1284         .name = BRCMFMAC_SDIO_PDATA_NAME,
1285         .id_table = brcmf_sdmmc_ids,
1286         .drv = {
1287                 .owner = THIS_MODULE,
1288 #ifdef CONFIG_PM_SLEEP
1289                 .pm = &brcmf_sdio_pm_ops,
1290 #endif  /* CONFIG_PM_SLEEP */
1291         },
1292 };
1293 
1294 static int __init brcmf_sdio_pd_probe(struct platform_device *pdev)
1295 {
1296         brcmf_dbg(SDIO, "Enter\n");
1297 
1298         brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
1299 
1300         if (brcmfmac_sdio_pdata->power_on)
1301                 brcmfmac_sdio_pdata->power_on();
1302 
1303         return 0;
1304 }
1305 
1306 static int brcmf_sdio_pd_remove(struct platform_device *pdev)
1307 {
1308         brcmf_dbg(SDIO, "Enter\n");
1309 
1310         if (brcmfmac_sdio_pdata->power_off)
1311                 brcmfmac_sdio_pdata->power_off();
1312 
1313         sdio_unregister_driver(&brcmf_sdmmc_driver);
1314 
1315         return 0;
1316 }
1317 
1318 static struct platform_driver brcmf_sdio_pd = {
1319         .remove         = brcmf_sdio_pd_remove,
1320         .driver         = {
1321                 .name   = BRCMFMAC_SDIO_PDATA_NAME,
1322         }
1323 };
1324 
1325 void brcmf_sdio_register(void)
1326 {
1327         int ret;
1328 
1329         ret = sdio_register_driver(&brcmf_sdmmc_driver);
1330         if (ret)
1331                 brcmf_err("sdio_register_driver failed: %d\n", ret);
1332 }
1333 
1334 void brcmf_sdio_exit(void)
1335 {
1336         brcmf_dbg(SDIO, "Enter\n");
1337 
1338         if (brcmfmac_sdio_pdata)
1339                 platform_driver_unregister(&brcmf_sdio_pd);
1340         else
1341                 sdio_unregister_driver(&brcmf_sdmmc_driver);
1342 }
1343 
1344 void __init brcmf_sdio_init(void)
1345 {
1346         int ret;
1347 
1348         brcmf_dbg(SDIO, "Enter\n");
1349 
1350         ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
1351         if (ret == -ENODEV)
1352                 brcmf_dbg(SDIO, "No platform data available.\n");
1353 }
1354 

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