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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[linux-2.6-block.git] / drivers / net / wireless / brcm80211 / brcmfmac / bcmsdh.c
CommitLineData
5b435de0
AS		 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>
354b75bf 24#include <linux/scatterlist.h>
5b435de0 25#include <linux/mmc/sdio.h>
e2dc9eea 26#include <linux/mmc/core.h>
5b435de0
AS		 27#include <linux/mmc/sdio_func.h>
28#include <linux/mmc/card.h>
e2dc9eea
AS		 29#include <linux/mmc/host.h>
30#include <linux/platform_device.h>
668761ac 31#include <linux/platform_data/brcmfmac-sdio.h>
e2dc9eea
AS		 32#include <linux/suspend.h>
33#include <linux/errno.h>
34#include <linux/module.h>
35#include <net/cfg80211.h>
5b435de0
AS		 36
37#include <defs.h>
38#include <brcm_hw_ids.h>
39#include <brcmu_utils.h>
40#include <brcmu_wifi.h>
568ba389 41#include <chipcommon.h>
5b435de0 42#include <soc.h>
568ba389 43#include "chip.h"
d14f78b9 44#include "bus.h"
a8e8ed34 45#include "debug.h"
888bf76e 46#include "sdio.h"
61f663df 47#include "of.h"
5b435de0
AS		 48
49#define SDIOH_API_ACCESS_RETRY_LIMIT 2
50
e49b06ba
AS		 51#define DMA_ALIGN_MASK 0x03
52
53#define SDIO_FUNC1_BLOCKSIZE 64
54#define SDIO_FUNC2_BLOCKSIZE 512
71370eb8
AS		 55/* Maximum milliseconds to wait for F2 to come up */
56#define SDIO_WAIT_F2RDY 3000
57
af1fa210
AS		 58#define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */
59#define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
60
61static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE;
62module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0);
63MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]");
668761ac 64
a39be27b 65static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
ba89bf19 66{
5b3c1832
HM		 67 struct brcmf_bus *bus_if = dev_get_drvdata(dev_id);
68 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
ba89bf19 69
668761ac 70 brcmf_dbg(INTR, "OOB intr triggered\n");
ba89bf19 71
668761ac 72 /* out-of-band interrupt is level-triggered which won't
ba89bf19
FL		 73 * be cleared until dpc
74 */
75 if (sdiodev->irq_en) {
76 disable_irq_nosync(irq);
77 sdiodev->irq_en = false;
78 }
79
82d7f3c1 80 brcmf_sdio_isr(sdiodev->bus);
ba89bf19
FL		 81
82 return IRQ_HANDLED;
83}
84
a39be27b 85static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func)
5b435de0 86{
5b3c1832
HM		 87 struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev);
88 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
5b435de0 89
668761ac 90 brcmf_dbg(INTR, "IB intr triggered\n");
5b435de0 91
82d7f3c1 92 brcmf_sdio_isr(sdiodev->bus);
5b435de0
AS		 93}
94
fbf59108 95/* dummy handler for SDIO function 2 interrupt */
a39be27b 96static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func)
fbf59108
FL		 97{
98}
99
a39be27b 100int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev)
5b435de0 101{
668761ac
HM		 102 int ret = 0;
103 u8 data;
568ba389 104 u32 addr, gpiocontrol;
668761ac 105 unsigned long flags;
5b435de0 106
668761ac
HM		 107 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
108 brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n",
109 sdiodev->pdata->oob_irq_nr);
110 ret = request_irq(sdiodev->pdata->oob_irq_nr,
a39be27b 111 brcmf_sdiod_oob_irqhandler,
668761ac
HM		 112 sdiodev->pdata->oob_irq_flags,
113 "brcmf_oob_intr",
114 &sdiodev->func[1]->dev);
115 if (ret != 0) {
116 brcmf_err("request_irq failed %d\n", ret);
117 return ret;
118 }
119 sdiodev->oob_irq_requested = true;
120 spin_lock_init(&sdiodev->irq_en_lock);
121 spin_lock_irqsave(&sdiodev->irq_en_lock, flags);
122 sdiodev->irq_en = true;
123 spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags);
124
125 ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr);
126 if (ret != 0) {
127 brcmf_err("enable_irq_wake failed %d\n", ret);
128 return ret;
129 }
130 sdiodev->irq_wake = true;
131
132 sdio_claim_host(sdiodev->func[1]);
133
568ba389
HG		 134 if (sdiodev->bus_if->chip == BRCM_CC_43362_CHIP_ID) {
135 /* assign GPIO to SDIO core */
136 addr = CORE_CC_REG(SI_ENUM_BASE, gpiocontrol);
137 gpiocontrol = brcmf_sdiod_regrl(sdiodev, addr, &ret);
138 gpiocontrol |= 0x2;
139 brcmf_sdiod_regwl(sdiodev, addr, gpiocontrol, &ret);
140
141 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_SELECT, 0xf,
142 &ret);
143 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_OUT, 0, &ret);
144 brcmf_sdiod_regwb(sdiodev, SBSDIO_GPIO_EN, 0x2, &ret);
145 }
146
668761ac 147 /* must configure SDIO_CCCR_IENx to enable irq */
a39be27b 148 data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret);
668761ac 149 data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1;
a39be27b 150 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret);
668761ac
HM		 151
152 /* redirect, configure and enable io for interrupt signal */
153 data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE;
154 if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH)
155 data |= SDIO_SEPINT_ACT_HI;
a39be27b 156 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret);
668761ac
HM		 157
158 sdio_release_host(sdiodev->func[1]);
159 } else {
160 brcmf_dbg(SDIO, "Entering\n");
161 sdio_claim_host(sdiodev->func[1]);
a39be27b
AS		 162 sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler);
163 sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler);
668761ac
HM		 164 sdio_release_host(sdiodev->func[1]);
165 }
5b435de0
AS		 166
167 return 0;
168}
169
a39be27b 170int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev)
5b435de0 171{
c3203374 172 brcmf_dbg(SDIO, "Entering\n");
5b435de0 173
668761ac
HM		 174 if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) {
175 sdio_claim_host(sdiodev->func[1]);
a39be27b
AS		 176 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL);
177 brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL);
668761ac
HM		 178 sdio_release_host(sdiodev->func[1]);
179
180 if (sdiodev->oob_irq_requested) {
181 sdiodev->oob_irq_requested = false;
182 if (sdiodev->irq_wake) {
183 disable_irq_wake(sdiodev->pdata->oob_irq_nr);
184 sdiodev->irq_wake = false;
185 }
186 free_irq(sdiodev->pdata->oob_irq_nr,
187 &sdiodev->func[1]->dev);
188 sdiodev->irq_en = false;
189 }
190 } else {
191 sdio_claim_host(sdiodev->func[1]);
192 sdio_release_irq(sdiodev->func[2]);
193 sdio_release_irq(sdiodev->func[1]);
194 sdio_release_host(sdiodev->func[1]);
195 }
5b435de0
AS		 196
197 return 0;
198}
199
36c4e7e4
AS		 200static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func,
201 uint regaddr, u8 byte)
e49b06ba 202{
e49b06ba
AS		 203 int err_ret;
204
205 /*
206 * Can only directly write to some F0 registers.
36c4e7e4 207 * Handle CCCR_IENx and CCCR_ABORT command
e49b06ba
AS		 208 * as a special case.
209 */
71370eb8 210 if ((regaddr == SDIO_CCCR_ABORT) ||
36c4e7e4
AS		 211 (regaddr == SDIO_CCCR_IENx))
212 sdio_writeb(func, byte, regaddr, &err_ret);
213 else
214 sdio_f0_writeb(func, byte, regaddr, &err_ret);
e49b06ba
AS		 215
216 return err_ret;
217}
218
71c60cf2
AS		 219static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
220 u32 addr, u8 regsz, void *data, bool write)
e49b06ba 221{
71c60cf2
AS		 222 struct sdio_func *func;
223 int ret;
e49b06ba 224
71c60cf2
AS		 225 brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
226 write, fn, addr, regsz);
e49b06ba 227
71c60cf2
AS		 228 /* only allow byte access on F0 */
229 if (WARN_ON(regsz > 1 && !fn))
230 return -EINVAL;
231 func = sdiodev->func[fn];
232
233 switch (regsz) {
234 case sizeof(u8):
235 if (write) {
236 if (fn)
237 sdio_writeb(func, *(u8 *)data, addr, &ret);
238 else
239 ret = brcmf_sdiod_f0_writeb(func, addr,
240 *(u8 *)data);
e49b06ba 241 } else {
71c60cf2
AS		 242 if (fn)
243 *(u8 *)data = sdio_readb(func, addr, &ret);
244 else
245 *(u8 *)data = sdio_f0_readb(func, addr, &ret);
e49b06ba 246 }
71c60cf2
AS		 247 break;
248 case sizeof(u16):
249 if (write)
250 sdio_writew(func, *(u16 *)data, addr, &ret);
251 else
252 *(u16 *)data = sdio_readw(func, addr, &ret);
253 break;
254 case sizeof(u32):
255 if (write)
256 sdio_writel(func, *(u32 *)data, addr, &ret);
257 else
258 *(u32 *)data = sdio_readl(func, addr, &ret);
259 break;
260 default:
261 brcmf_err("invalid size: %d\n", regsz);
262 break;
e49b06ba
AS		 263 }
264
4d1a4f16
AS		 265 if (ret)
266 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
267 write ? "write" : "read", fn, addr, ret);
268
71c60cf2 269 return ret;
e49b06ba
AS		 270}
271
a1cee865
HM		 272static void brcmf_sdiod_nomedium_state(struct brcmf_sdio_dev *sdiodev)
273{
274 sdiodev->state = BRCMF_STATE_NOMEDIUM;
275 brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_DOWN);
276}
277
71c60cf2
AS		 278static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr,
279 u8 regsz, void *data, bool write)
e49b06ba 280{
4d1a4f16 281 u8 func;
71c60cf2
AS		 282 s32 retry = 0;
283 int ret;
e49b06ba 284
a1cee865 285 if (sdiodev->state == BRCMF_STATE_NOMEDIUM)
bb350711
AS		 286 return -ENOMEDIUM;
287
71c60cf2
AS		 288 /*
289 * figure out how to read the register based on address range
290 * 0x00 ~ 0x7FF: function 0 CCCR and FBR
291 * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
292 * The rest: function 1 silicon backplane core registers
293 */
294 if ((addr & ~REG_F0_REG_MASK) == 0)
4d1a4f16 295 func = SDIO_FUNC_0;
71c60cf2 296 else
4d1a4f16 297 func = SDIO_FUNC_1;
e49b06ba 298
71c60cf2
AS		 299 do {
300 if (!write)
301 memset(data, 0, regsz);
302 /* for retry wait for 1 ms till bus get settled down */
303 if (retry)
304 usleep_range(1000, 2000);
4d1a4f16 305 ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz,
71c60cf2 306 data, write);
bb350711
AS		 307 } while (ret != 0 && ret != -ENOMEDIUM &&
308 retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
e49b06ba 309
bb350711 310 if (ret == -ENOMEDIUM)
a1cee865 311 brcmf_sdiod_nomedium_state(sdiodev);
4d1a4f16
AS		 312 else if (ret != 0) {
313 /*
314 * SleepCSR register access can fail when
315 * waking up the device so reduce this noise
316 * in the logs.
317 */
318 if (addr != SBSDIO_FUNC1_SLEEPCSR)
319 brcmf_err("failed to %s data F%d@0x%05x, err: %d\n",
320 write ? "write" : "read", func, addr, ret);
321 else
322 brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
323 write ? "write" : "read", func, addr, ret);
324 }
71c60cf2 325 return ret;
e49b06ba
AS		 326}
327
356bae6f 328static int
a39be27b 329brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
5b435de0 330{
7d9cfc28
FL		 331 int err = 0, i;
332 u8 addr[3];
7d9cfc28 333
a1cee865 334 if (sdiodev->state == BRCMF_STATE_NOMEDIUM)
bb350711
AS		 335 return -ENOMEDIUM;
336
7d9cfc28
FL		 337 addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK;
338 addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK;
339 addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK;
340
341 for (i = 0; i < 3; i++) {
71c60cf2
AS		 342 err = brcmf_sdiod_regrw_helper(sdiodev,
343 SBSDIO_FUNC1_SBADDRLOW + i,
344 sizeof(u8), &addr[i], true);
7d9cfc28 345 if (err) {
71c60cf2 346 brcmf_err("failed at addr: 0x%0x\n",
7d9cfc28
FL		 347 SBSDIO_FUNC1_SBADDRLOW + i);
348 break;
349 }
350 }
5b435de0
AS		 351
352 return err;
353}
354
356bae6f 355static int
a39be27b 356brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr)
356bae6f
FL		 357{
358 uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
359 int err = 0;
360
361 if (bar0 != sdiodev->sbwad) {
a39be27b 362 err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
356bae6f
FL		 363 if (err)
364 return err;
365
366 sdiodev->sbwad = bar0;
367 }
368
369 *addr &= SBSDIO_SB_OFT_ADDR_MASK;
370
371 if (width == 4)
372 *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
373
374 return 0;
375}
376
a39be27b 377u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
e9b8d91d
FL		 378{
379 u8 data;
380 int retval;
381
c3203374 382 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
71c60cf2
AS		 383 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
384 false);
c3203374 385 brcmf_dbg(SDIO, "data:0x%02x\n", data);
e9b8d91d
FL		 386
387 if (ret)
388 *ret = retval;
389
390 return data;
391}
392
a39be27b 393u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
e9b8d91d
FL		 394{
395 u32 data;
396 int retval;
397
c3203374 398 brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
71c60cf2
AS		 399 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
400 if (retval)
401 goto done;
402 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
403 false);
c3203374 404 brcmf_dbg(SDIO, "data:0x%08x\n", data);
e9b8d91d 405
71c60cf2 406done:
e9b8d91d
FL		 407 if (ret)
408 *ret = retval;
409
410 return data;
411}
412
a39be27b 413void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr,
e9b8d91d
FL		 414 u8 data, int *ret)
415{
416 int retval;
417
c3203374 418 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data);
71c60cf2
AS		 419 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
420 true);
e9b8d91d
FL		 421 if (ret)
422 *ret = retval;
423}
424
a39be27b 425void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr,
e9b8d91d
FL		 426 u32 data, int *ret)
427{
428 int retval;
429
c3203374 430 brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
71c60cf2
AS		 431 retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr);
432 if (retval)
433 goto done;
434 retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data,
435 true);
e9b8d91d 436
71c60cf2 437done:
e9b8d91d
FL		 438 if (ret)
439 *ret = retval;
440}
441
a39be27b 442static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn,
4aef267e
AS		 443 bool write, u32 addr, struct sk_buff *pkt)
444{
445 unsigned int req_sz;
bb350711 446 int err;
4aef267e 447
4aef267e
AS		 448 /* Single skb use the standard mmc interface */
449 req_sz = pkt->len + 3;
450 req_sz &= (uint)~3;
451
452 if (write)
bb350711
AS		 453 err = sdio_memcpy_toio(sdiodev->func[fn], addr,
454 ((u8 *)(pkt->data)), req_sz);
4aef267e 455 else if (fn == 1)
bb350711
AS		 456 err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)),
457 addr, req_sz);
4aef267e
AS		 458 else
459 /* function 2 read is FIFO operation */
bb350711
AS		 460 err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr,
461 req_sz);
462 if (err == -ENOMEDIUM)
a1cee865 463 brcmf_sdiod_nomedium_state(sdiodev);
bb350711 464 return err;
4aef267e
AS		 465}
466
78b3f1c5 467/**
a39be27b 468 * brcmf_sdiod_sglist_rw - SDIO interface function for block data access
78b3f1c5
FL		 469 * @sdiodev: brcmfmac sdio device
470 * @fn: SDIO function number
471 * @write: direction flag
472 * @addr: dongle memory address as source/destination
473 * @pkt: skb pointer
474 *
475 * This function takes the respbonsibility as the interface function to MMC
476 * stack for block data access. It assumes that the skb passed down by the
477 * caller has already been padded and aligned.
478 */
a39be27b
AS		 479static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn,
480 bool write, u32 addr,
481 struct sk_buff_head *pktlist)
78b3f1c5 482{
354b75bf 483 unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
71201496 484 unsigned int max_req_sz, orig_offset, dst_offset;
3f782744 485 unsigned short max_seg_cnt, seg_sz;
3b81a680
FL		 486 unsigned char *pkt_data, *orig_data, *dst_data;
487 struct sk_buff *pkt_next = NULL, *local_pkt_next;
488 struct sk_buff_head local_list, *target_list;
354b75bf
FL		 489 struct mmc_request mmc_req;
490 struct mmc_command mmc_cmd;
491 struct mmc_data mmc_dat;
354b75bf 492 struct scatterlist *sgl;
354b75bf
FL		 493 int ret = 0;
494
495 if (!pktlist->qlen)
496 return -EINVAL;
78b3f1c5 497
3b81a680
FL		 498 target_list = pktlist;
499 /* for host with broken sg support, prepare a page aligned list */
500 __skb_queue_head_init(&local_list);
501 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
502 req_sz = 0;
503 skb_queue_walk(pktlist, pkt_next)
504 req_sz += pkt_next->len;
505 req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize);
506 while (req_sz > PAGE_SIZE) {
507 pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE);
508 if (pkt_next == NULL) {
509 ret = -ENOMEM;
510 goto exit;
511 }
512 __skb_queue_tail(&local_list, pkt_next);
513 req_sz -= PAGE_SIZE;
514 }
515 pkt_next = brcmu_pkt_buf_get_skb(req_sz);
516 if (pkt_next == NULL) {
517 ret = -ENOMEM;
518 goto exit;
519 }
520 __skb_queue_tail(&local_list, pkt_next);
521 target_list = &local_list;
522 }
523
354b75bf 524 func_blk_sz = sdiodev->func[fn]->cur_blksize;
71201496
AS		 525 max_req_sz = sdiodev->max_request_size;
526 max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
527 target_list->qlen);
3b81a680 528 seg_sz = target_list->qlen;
354b75bf 529 pkt_offset = 0;
3b81a680 530 pkt_next = target_list->next;
354b75bf 531
7f9a8dc8
AS		 532 memset(&mmc_req, 0, sizeof(struct mmc_request));
533 memset(&mmc_cmd, 0, sizeof(struct mmc_command));
534 memset(&mmc_dat, 0, sizeof(struct mmc_data));
535
af1fa210 536 mmc_dat.sg = sdiodev->sgtable.sgl;
7f9a8dc8
AS		 537 mmc_dat.blksz = func_blk_sz;
538 mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
539 mmc_cmd.opcode = SD_IO_RW_EXTENDED;
540 mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */
541 mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */
542 mmc_cmd.arg |= 1<<27; /* block mode */
543 /* for function 1 the addr will be incremented */
544 mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0;
545 mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
546 mmc_req.cmd = &mmc_cmd;
547 mmc_req.data = &mmc_dat;
548
354b75bf
FL		 549 while (seg_sz) {
550 req_sz = 0;
551 sg_cnt = 0;
af1fa210 552 sgl = sdiodev->sgtable.sgl;
354b75bf 553 /* prep sg table */
3b81a680 554 while (pkt_next != (struct sk_buff *)target_list) {
354b75bf
FL		 555 pkt_data = pkt_next->data + pkt_offset;
556 sg_data_sz = pkt_next->len - pkt_offset;
71201496
AS		 557 if (sg_data_sz > sdiodev->max_segment_size)
558 sg_data_sz = sdiodev->max_segment_size;
354b75bf
FL		 559 if (sg_data_sz > max_req_sz - req_sz)
560 sg_data_sz = max_req_sz - req_sz;
561
562 sg_set_buf(sgl, pkt_data, sg_data_sz);
563
564 sg_cnt++;
565 sgl = sg_next(sgl);
566 req_sz += sg_data_sz;
567 pkt_offset += sg_data_sz;
568 if (pkt_offset == pkt_next->len) {
569 pkt_offset = 0;
570 pkt_next = pkt_next->next;
571 }
572
3f782744 573 if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt)
354b75bf
FL		 574 break;
575 }
576 seg_sz -= sg_cnt;
577
578 if (req_sz % func_blk_sz != 0) {
579 brcmf_err("sg request length %u is not %u aligned\n",
580 req_sz, func_blk_sz);
3b81a680
FL		 581 ret = -ENOTBLK;
582 goto exit;
354b75bf 583 }
7f9a8dc8 584
354b75bf 585 mmc_dat.sg_len = sg_cnt;
354b75bf 586 mmc_dat.blocks = req_sz / func_blk_sz;
354b75bf
FL		 587 mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */
588 mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */
7f9a8dc8 589 /* incrementing addr for function 1 */
354b75bf
FL		 590 if (fn == 1)
591 addr += req_sz;
592
593 mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
71201496 594 mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
354b75bf
FL		 595
596 ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
bb350711 597 if (ret == -ENOMEDIUM) {
a1cee865 598 brcmf_sdiod_nomedium_state(sdiodev);
bb350711
AS		 599 break;
600 } else if (ret != 0) {
354b75bf
FL		 601 brcmf_err("CMD53 sg block %s failed %d\n",
602 write ? "write" : "read", ret);
603 ret = -EIO;
604 break;
605 }
606 }
607
3b81a680
FL		 608 if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) {
609 local_pkt_next = local_list.next;
610 orig_offset = 0;
611 skb_queue_walk(pktlist, pkt_next) {
612 dst_offset = 0;
613 do {
614 req_sz = local_pkt_next->len - orig_offset;
615 req_sz = min_t(uint, pkt_next->len - dst_offset,
616 req_sz);
617 orig_data = local_pkt_next->data + orig_offset;
618 dst_data = pkt_next->data + dst_offset;
619 memcpy(dst_data, orig_data, req_sz);
620 orig_offset += req_sz;
621 dst_offset += req_sz;
622 if (orig_offset == local_pkt_next->len) {
623 orig_offset = 0;
624 local_pkt_next = local_pkt_next->next;
625 }
626 if (dst_offset == pkt_next->len)
627 break;
628 } while (!skb_queue_empty(&local_list));
629 }
630 }
631
632exit:
af1fa210 633 sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
3b81a680
FL		 634 while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
635 brcmu_pkt_buf_free_skb(pkt_next);
354b75bf
FL		 636
637 return ret;
78b3f1c5
FL		 638}
639
a7cdd821 640int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
5adfeb63
AS		 641{
642 struct sk_buff *mypkt;
643 int err;
644
645 mypkt = brcmu_pkt_buf_get_skb(nbytes);
646 if (!mypkt) {
5e8149f5 647 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
5adfeb63
AS		 648 nbytes);
649 return -EIO;
650 }
651
a7cdd821 652 err = brcmf_sdiod_recv_pkt(sdiodev, mypkt);
5adfeb63
AS		 653 if (!err)
654 memcpy(buf, mypkt->data, nbytes);
655
656 brcmu_pkt_buf_free_skb(mypkt);
657 return err;
658}
659
a7cdd821 660int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt)
5adfeb63 661{
a7cdd821 662 u32 addr = sdiodev->sbwad;
5adfeb63
AS		 663 int err = 0;
664
a7cdd821 665 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len);
5adfeb63 666
a7cdd821 667 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
5adfeb63 668 if (err)
7057fd00 669 goto done;
5b435de0 670
a7cdd821 671 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt);
5adfeb63 672
7057fd00 673done:
5adfeb63
AS		 674 return err;
675}
676
a7cdd821
AS		 677int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev,
678 struct sk_buff_head *pktq, uint totlen)
5adfeb63 679{
a413e39a
AS		 680 struct sk_buff *glom_skb;
681 struct sk_buff *skb;
a7cdd821 682 u32 addr = sdiodev->sbwad;
5adfeb63
AS		 683 int err = 0;
684
a7cdd821
AS		 685 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n",
686 addr, pktq->qlen);
5adfeb63 687
a7cdd821 688 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
5adfeb63 689 if (err)
7057fd00 690 goto done;
5b435de0 691
a413e39a 692 if (pktq->qlen == 1)
a7cdd821
AS		 693 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
694 pktq->next);
a413e39a
AS		 695 else if (!sdiodev->sg_support) {
696 glom_skb = brcmu_pkt_buf_get_skb(totlen);
697 if (!glom_skb)
698 return -ENOMEM;
a7cdd821
AS		 699 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr,
700 glom_skb);
a413e39a
AS		 701 if (err)
702 goto done;
703
704 skb_queue_walk(pktq, skb) {
705 memcpy(skb->data, glom_skb->data, skb->len);
706 skb_pull(glom_skb, skb->len);
707 }
708 } else
a7cdd821
AS		 709 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr,
710 pktq);
5b435de0 711
7057fd00 712done:
5adfeb63 713 return err;
5b435de0
AS		 714}
715
a7cdd821 716int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes)
5adfeb63
AS		 717{
718 struct sk_buff *mypkt;
a7cdd821 719 u32 addr = sdiodev->sbwad;
5adfeb63
AS		 720 int err;
721
722 mypkt = brcmu_pkt_buf_get_skb(nbytes);
723 if (!mypkt) {
5e8149f5 724 brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n",
5adfeb63
AS		 725 nbytes);
726 return -EIO;
727 }
728
729 memcpy(mypkt->data, buf, nbytes);
4aef267e 730
a7cdd821 731 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
4aef267e 732
fcaac2b1 733 if (!err)
a7cdd821
AS		 734 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr,
735 mypkt);
5adfeb63
AS		 736
737 brcmu_pkt_buf_free_skb(mypkt);
738 return err;
739
740}
741
a7cdd821
AS		 742int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev,
743 struct sk_buff_head *pktq)
5b435de0 744{
c8cce1f9 745 struct sk_buff *skb;
a7cdd821 746 u32 addr = sdiodev->sbwad;
fcaac2b1 747 int err;
5b435de0 748
a7cdd821 749 brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen);
5b435de0 750
a7cdd821 751 err = brcmf_sdiod_addrprep(sdiodev, 4, &addr);
fcaac2b1
AS		 752 if (err)
753 return err;
5b435de0 754
c8cce1f9
AS		 755 if (pktq->qlen == 1 || !sdiodev->sg_support)
756 skb_queue_walk(pktq, skb) {
a7cdd821
AS		 757 err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true,
758 addr, skb);
c8cce1f9
AS		 759 if (err)
760 break;
761 }
762 else
a7cdd821
AS		 763 err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr,
764 pktq);
c8cce1f9
AS		 765
766 return err;
5b435de0
AS		 767}
768
ba540b01 769int
a39be27b
AS		 770brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address,
771 u8 *data, uint size)
5b435de0 772{
ba540b01
FL		 773 int bcmerror = 0;
774 struct sk_buff *pkt;
775 u32 sdaddr;
776 uint dsize;
777
778 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
779 pkt = dev_alloc_skb(dsize);
780 if (!pkt) {
781 brcmf_err("dev_alloc_skb failed: len %d\n", dsize);
782 return -EIO;
783 }
784 pkt->priority = 0;
4c6e869d 785
ba540b01
FL		 786 /* Determine initial transfer parameters */
787 sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK;
788 if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK)
789 dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr);
790 else
791 dsize = size;
5b435de0 792
ba540b01
FL		 793 sdio_claim_host(sdiodev->func[1]);
794
795 /* Do the transfer(s) */
796 while (size) {
797 /* Set the backplane window to include the start address */
a39be27b 798 bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address);
ba540b01
FL		 799 if (bcmerror)
800 break;
801
802 brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n",
803 write ? "write" : "read", dsize,
804 sdaddr, address & SBSDIO_SBWINDOW_MASK);
805
806 sdaddr &= SBSDIO_SB_OFT_ADDR_MASK;
807 sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
808
809 skb_put(pkt, dsize);
810 if (write)
811 memcpy(pkt->data, data, dsize);
a39be27b
AS		 812 bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write,
813 sdaddr, pkt);
ba540b01
FL		 814 if (bcmerror) {
815 brcmf_err("membytes transfer failed\n");
816 break;
817 }
818 if (!write)
819 memcpy(data, pkt->data, dsize);
79c868e5 820 skb_trim(pkt, 0);
ba540b01
FL		 821
822 /* Adjust for next transfer (if any) */
823 size -= dsize;
824 if (size) {
825 data += dsize;
826 address += dsize;
827 sdaddr = 0;
828 dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size);
829 }
4c6e869d
AS		 830 }
831
ba540b01 832 dev_kfree_skb(pkt);
4c6e869d 833
ba540b01 834 /* Return the window to backplane enumeration space for core access */
a39be27b 835 if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad))
ba540b01
FL		 836 brcmf_err("FAILED to set window back to 0x%x\n",
837 sdiodev->sbwad);
4c6e869d 838
ba540b01 839 sdio_release_host(sdiodev->func[1]);
4c6e869d 840
ba540b01 841 return bcmerror;
5b435de0
AS		 842}
843
a39be27b 844int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
5b435de0
AS		 845{
846 char t_func = (char)fn;
c3203374 847 brcmf_dbg(SDIO, "Enter\n");
5b435de0
AS		 848
849 /* issue abort cmd52 command through F0 */
71c60cf2
AS		 850 brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT,
851 sizeof(t_func), &t_func, true);
5b435de0 852
c3203374 853 brcmf_dbg(SDIO, "Exit\n");
5b435de0
AS		 854 return 0;
855}
856
af1fa210
AS		 857static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
858{
859 uint nents;
860 int err;
861
862 if (!sdiodev->sg_support)
863 return;
864
865 nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, brcmf_sdiod_txglomsz);
866 nents += (nents >> 4) + 1;
867
868 WARN_ON(nents > sdiodev->max_segment_count);
869
870 brcmf_dbg(TRACE, "nents=%d\n", nents);
871 err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
872 if (err < 0) {
873 brcmf_err("allocation failed: disable scatter-gather");
874 sdiodev->sg_support = false;
875 }
876
877 sdiodev->txglomsz = brcmf_sdiod_txglomsz;
878}
879
a39be27b
AS		 880static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
881{
a39be27b 882 if (sdiodev->bus) {
9fbe2a6d 883 brcmf_sdio_remove(sdiodev->bus);
a39be27b
AS		 884 sdiodev->bus = NULL;
885 }
886
887 /* Disable Function 2 */
888 sdio_claim_host(sdiodev->func[2]);
889 sdio_disable_func(sdiodev->func[2]);
890 sdio_release_host(sdiodev->func[2]);
891
892 /* Disable Function 1 */
893 sdio_claim_host(sdiodev->func[1]);
894 sdio_disable_func(sdiodev->func[1]);
895 sdio_release_host(sdiodev->func[1]);
896
af1fa210 897 sg_free_table(&sdiodev->sgtable);
a39be27b
AS		 898 sdiodev->sbwad = 0;
899
900 return 0;
901}
902
903static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev)
e2dc9eea 904{
e2dc9eea 905 struct sdio_func *func;
a39be27b 906 struct mmc_host *host;
e2dc9eea 907 uint max_blocks;
a39be27b 908 int ret = 0;
e2dc9eea
AS		 909
910 sdiodev->num_funcs = 2;
911
912 sdio_claim_host(sdiodev->func[1]);
913
a39be27b
AS		 914 ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE);
915 if (ret) {
e2dc9eea 916 brcmf_err("Failed to set F1 blocksize\n");
a39be27b 917 sdio_release_host(sdiodev->func[1]);
e2dc9eea
AS		 918 goto out;
919 }
a39be27b
AS		 920 ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE);
921 if (ret) {
e2dc9eea 922 brcmf_err("Failed to set F2 blocksize\n");
a39be27b 923 sdio_release_host(sdiodev->func[1]);
e2dc9eea
AS		 924 goto out;
925 }
926
71370eb8
AS		 927 /* increase F2 timeout */
928 sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY;
929
463c30b3 930 /* Enable Function 1 */
a39be27b
AS		 931 ret = sdio_enable_func(sdiodev->func[1]);
932 sdio_release_host(sdiodev->func[1]);
933 if (ret) {
934 brcmf_err("Failed to enable F1: err=%d\n", ret);
463c30b3
AS		 935 goto out;
936 }
e2dc9eea
AS		 937
938 /*
a39be27b 939 * determine host related variables after brcmf_sdiod_probe()
e2dc9eea
AS		 940 * as func->cur_blksize is properly set and F2 init has been
941 * completed successfully.
942 */
943 func = sdiodev->func[2];
944 host = func->card->host;
945 sdiodev->sg_support = host->max_segs > 1;
946 max_blocks = min_t(uint, host->max_blk_count, 511u);
947 sdiodev->max_request_size = min_t(uint, host->max_req_size,
948 max_blocks * func->cur_blksize);
949 sdiodev->max_segment_count = min_t(uint, host->max_segs,
950 SG_MAX_SINGLE_ALLOC);
951 sdiodev->max_segment_size = host->max_seg_size;
e49b06ba 952
af1fa210
AS		 953 /* allocate scatter-gather table. sg support
954 * will be disabled upon allocation failure.
955 */
956 brcmf_sdiod_sgtable_alloc(sdiodev);
957
e49b06ba 958 /* try to attach to the target device */
82d7f3c1 959 sdiodev->bus = brcmf_sdio_probe(sdiodev);
e49b06ba 960 if (!sdiodev->bus) {
e49b06ba
AS		 961 ret = -ENODEV;
962 goto out;
963 }
964
965out:
966 if (ret)
a39be27b 967 brcmf_sdiod_remove(sdiodev);
e49b06ba
AS		 968
969 return ret;
970}
971
5779ae6a 972#define BRCMF_SDIO_DEVICE(dev_id) \
8bd61f8d 973 {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, dev_id)}
5779ae6a 974
e49b06ba
AS		 975/* devices we support, null terminated */
976static const struct sdio_device_id brcmf_sdmmc_ids[] = {
8bd61f8d
AS		 977 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43143),
978 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43241),
979 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4329),
980 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4330),
981 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4334),
982 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43340),
983 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43341),
984 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_43362),
985 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4335_4339),
986 BRCMF_SDIO_DEVICE(SDIO_DEVICE_ID_BROADCOM_4354),
5779ae6a 987 { /* end: all zeroes */ }
e49b06ba
AS		 988};
989MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids);
990
991static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata;
992
993
e2dc9eea
AS		 994static int brcmf_ops_sdio_probe(struct sdio_func *func,
995 const struct sdio_device_id *id)
996{
997 int err;
998 struct brcmf_sdio_dev *sdiodev;
999 struct brcmf_bus *bus_if;
1000
1001 brcmf_dbg(SDIO, "Enter\n");
1002 brcmf_dbg(SDIO, "Class=%x\n", func->class);
1003 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1004 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1005 brcmf_dbg(SDIO, "Function#: %d\n", func->num);
1006
1007 /* Consume func num 1 but dont do anything with it. */
1008 if (func->num == 1)
1009 return 0;
1010
1011 /* Ignore anything but func 2 */
1012 if (func->num != 2)
1013 return -ENODEV;
1014
1015 bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL);
1016 if (!bus_if)
1017 return -ENOMEM;
1018 sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL);
1019 if (!sdiodev) {
1020 kfree(bus_if);
1021 return -ENOMEM;
1022 }
1023
36c4e7e4
AS		 1024 /* store refs to functions used. mmc_card does
1025 * not hold the F0 function pointer.
1026 */
1027 sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL);
1028 sdiodev->func[0]->num = 0;
e2dc9eea
AS		 1029 sdiodev->func[1] = func->card->sdio_func[0];
1030 sdiodev->func[2] = func;
1031
1032 sdiodev->bus_if = bus_if;
1033 bus_if->bus_priv.sdio = sdiodev;
943258b6 1034 bus_if->proto_type = BRCMF_PROTO_BCDC;
e2dc9eea
AS		 1035 dev_set_drvdata(&func->dev, bus_if);
1036 dev_set_drvdata(&sdiodev->func[1]->dev, bus_if);
1037 sdiodev->dev = &sdiodev->func[1]->dev;
1038 sdiodev->pdata = brcmfmac_sdio_pdata;
1039
61f663df
CYT		 1040 if (!sdiodev->pdata)
1041 brcmf_of_probe(sdiodev);
1042
330b4e4b
HM		 1043#ifdef CONFIG_PM_SLEEP
1044 /* wowl can be supported when KEEP_POWER is true and (WAKE_SDIO_IRQ
1045 * is true or when platform data OOB irq is true).
1046 */
1047 if ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_KEEP_POWER) &&
1048 ((sdio_get_host_pm_caps(sdiodev->func[1]) & MMC_PM_WAKE_SDIO_IRQ) ||
8975842b 1049 (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)))
330b4e4b
HM		 1050 bus_if->wowl_supported = true;
1051#endif
1052
8982cd40 1053 sdiodev->sleeping = false;
e2dc9eea 1054 atomic_set(&sdiodev->suspend, false);
8982cd40 1055 init_waitqueue_head(&sdiodev->idle_wait);
e2dc9eea 1056
a39be27b
AS		 1057 brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n");
1058 err = brcmf_sdiod_probe(sdiodev);
e2dc9eea
AS		 1059 if (err) {
1060 brcmf_err("F2 error, probe failed %d...\n", err);
1061 goto fail;
1062 }
1063
1064 brcmf_dbg(SDIO, "F2 init completed...\n");
1065 return 0;
1066
1067fail:
1068 dev_set_drvdata(&func->dev, NULL);
1069 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
36c4e7e4 1070 kfree(sdiodev->func[0]);
e2dc9eea
AS		 1071 kfree(sdiodev);
1072 kfree(bus_if);
1073 return err;
1074}
1075
1076static void brcmf_ops_sdio_remove(struct sdio_func *func)
1077{
1078 struct brcmf_bus *bus_if;
1079 struct brcmf_sdio_dev *sdiodev;
1080
1081 brcmf_dbg(SDIO, "Enter\n");
1082 brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor);
1083 brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device);
1084 brcmf_dbg(SDIO, "Function: %d\n", func->num);
1085
1086 if (func->num != 1 && func->num != 2)
1087 return;
1088
1089 bus_if = dev_get_drvdata(&func->dev);
1090 if (bus_if) {
1091 sdiodev = bus_if->bus_priv.sdio;
a39be27b 1092 brcmf_sdiod_remove(sdiodev);
e2dc9eea
AS		 1093
1094 dev_set_drvdata(&sdiodev->func[1]->dev, NULL);
1095 dev_set_drvdata(&sdiodev->func[2]->dev, NULL);
1096
1097 kfree(bus_if);
36c4e7e4 1098 kfree(sdiodev->func[0]);
e2dc9eea
AS		 1099 kfree(sdiodev);
1100 }
1101
1102 brcmf_dbg(SDIO, "Exit\n");
1103}
1104
330b4e4b
HM		 1105void brcmf_sdio_wowl_config(struct device *dev, bool enabled)
1106{
1107 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1108 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1109
1110 brcmf_dbg(SDIO, "Configuring WOWL, enabled=%d\n", enabled);
1111 sdiodev->wowl_enabled = enabled;
1112}
1113
e2dc9eea 1114#ifdef CONFIG_PM_SLEEP
a39be27b 1115static int brcmf_ops_sdio_suspend(struct device *dev)
e2dc9eea 1116{
8982cd40
AS		 1117 struct brcmf_bus *bus_if;
1118 struct brcmf_sdio_dev *sdiodev;
330b4e4b 1119 mmc_pm_flag_t sdio_flags;
e2dc9eea 1120
3e3831c4 1121 brcmf_dbg(SDIO, "Enter\n");
e2dc9eea 1122
8982cd40
AS		 1123 bus_if = dev_get_drvdata(dev);
1124 sdiodev = bus_if->bus_priv.sdio;
1125
1126 /* wait for watchdog to go idle */
1127 if (wait_event_timeout(sdiodev->idle_wait, sdiodev->sleeping,
1128 msecs_to_jiffies(3 * BRCMF_WD_POLL_MS)) == 0) {
1129 brcmf_err("bus still active\n");
1130 return -EBUSY;
1131 }
1132 /* disable watchdog */
1133 brcmf_sdio_wd_timer(sdiodev->bus, 0);
3e3831c4
AS		 1134 atomic_set(&sdiodev->suspend, true);
1135
330b4e4b
HM		 1136 if (sdiodev->wowl_enabled) {
1137 sdio_flags = MMC_PM_KEEP_POWER;
1138 if (sdiodev->pdata->oob_irq_supported)
1139 enable_irq_wake(sdiodev->pdata->oob_irq_nr);
1140 else
1141 sdio_flags = MMC_PM_WAKE_SDIO_IRQ;
1142 if (sdio_set_host_pm_flags(sdiodev->func[1], sdio_flags))
1143 brcmf_err("Failed to set pm_flags %x\n", sdio_flags);
e2dc9eea 1144 }
330b4e4b 1145 return 0;
e2dc9eea
AS		 1146}
1147
a39be27b 1148static int brcmf_ops_sdio_resume(struct device *dev)
e2dc9eea
AS		 1149{
1150 struct brcmf_bus *bus_if = dev_get_drvdata(dev);
1151 struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio;
1152
3e3831c4 1153 brcmf_dbg(SDIO, "Enter\n");
8975842b 1154 if (sdiodev->pdata && sdiodev->pdata->oob_irq_supported)
330b4e4b 1155 disable_irq_wake(sdiodev->pdata->oob_irq_nr);
82d7f3c1 1156 brcmf_sdio_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS);
e2dc9eea
AS		 1157 atomic_set(&sdiodev->suspend, false);
1158 return 0;
1159}
1160
1161static const struct dev_pm_ops brcmf_sdio_pm_ops = {
a39be27b
AS		 1162 .suspend = brcmf_ops_sdio_suspend,
1163 .resume = brcmf_ops_sdio_resume,
e2dc9eea
AS		 1164};
1165#endif /* CONFIG_PM_SLEEP */
1166
1167static struct sdio_driver brcmf_sdmmc_driver = {
1168 .probe = brcmf_ops_sdio_probe,
1169 .remove = brcmf_ops_sdio_remove,
1170 .name = BRCMFMAC_SDIO_PDATA_NAME,
1171 .id_table = brcmf_sdmmc_ids,
e2dc9eea 1172 .drv = {
0b0acd8c
FL		 1173 .owner = THIS_MODULE,
1174#ifdef CONFIG_PM_SLEEP
e2dc9eea 1175 .pm = &brcmf_sdio_pm_ops,
e2dc9eea 1176#endif /* CONFIG_PM_SLEEP */
0b0acd8c 1177 },
e2dc9eea
AS		 1178};
1179
c2d23c70 1180static int __init brcmf_sdio_pd_probe(struct platform_device *pdev)
e2dc9eea
AS		 1181{
1182 brcmf_dbg(SDIO, "Enter\n");
1183
1184 brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev);
1185
1186 if (brcmfmac_sdio_pdata->power_on)
1187 brcmfmac_sdio_pdata->power_on();
1188
1189 return 0;
1190}
1191
1192static int brcmf_sdio_pd_remove(struct platform_device *pdev)
1193{
1194 brcmf_dbg(SDIO, "Enter\n");
1195
1196 if (brcmfmac_sdio_pdata->power_off)
1197 brcmfmac_sdio_pdata->power_off();
1198
1199 sdio_unregister_driver(&brcmf_sdmmc_driver);
1200
1201 return 0;
1202}
1203
1204static struct platform_driver brcmf_sdio_pd = {
1205 .remove = brcmf_sdio_pd_remove,
1206 .driver = {
1207 .name = BRCMFMAC_SDIO_PDATA_NAME,
e2dc9eea
AS		 1208 }
1209};
1210
1211void brcmf_sdio_register(void)
1212{
1213 int ret;
1214
1215 ret = sdio_register_driver(&brcmf_sdmmc_driver);
1216 if (ret)
1217 brcmf_err("sdio_register_driver failed: %d\n", ret);
1218}
1219
1220void brcmf_sdio_exit(void)
1221{
1222 brcmf_dbg(SDIO, "Enter\n");
1223
1224 if (brcmfmac_sdio_pdata)
1225 platform_driver_unregister(&brcmf_sdio_pd);
1226 else
1227 sdio_unregister_driver(&brcmf_sdmmc_driver);
1228}
1229
1230void __init brcmf_sdio_init(void)
1231{
1232 int ret;
1233
1234 brcmf_dbg(SDIO, "Enter\n");
1235
1236 ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe);
1237 if (ret == -ENODEV)
1238 brcmf_dbg(SDIO, "No platform data available.\n");
1239}
Linux 6.x block layer and io_uring tree(s)