1 /* linux/drivers/mmc/host/sdhci-pci.c - SDHCI on PCI bus interface
2 *
3 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or (at
8 * your option) any later version.
9 *
10 * Thanks to the following companies for their support:
11 *
12 * - JMicron (hardware and technical support)
13 */
14
15 #include <linux/delay.h>
16 #include <linux/highmem.h>
17 #include <linux/module.h>
18 #include <linux/pci.h>
19 #include <linux/dma-mapping.h>
20 #include <linux/slab.h>
21 #include <linux/device.h>
22 #include <linux/mmc/host.h>
23 #include <linux/mmc/mmc.h>
24 #include <linux/scatterlist.h>
25 #include <linux/io.h>
26 #include <linux/gpio.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/mmc/slot-gpio.h>
29 #include <linux/mmc/sdhci-pci-data.h>
30
31 #include "sdhci.h"
32 #include "sdhci-pci.h"
33 #include "sdhci-pci-o2micro.h"
34
35 /*****************************************************************************\
36 * *
37 * Hardware specific quirk handling *
38 * *
39 \*****************************************************************************/
40
ricoh_probe(struct sdhci_pci_chip * chip)41 static int ricoh_probe(struct sdhci_pci_chip *chip)
42 {
43 if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG ||
44 chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY)
45 chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET;
46 return 0;
47 }
48
ricoh_mmc_probe_slot(struct sdhci_pci_slot * slot)49 static int ricoh_mmc_probe_slot(struct sdhci_pci_slot *slot)
50 {
51 slot->host->caps =
52 ((0x21 << SDHCI_TIMEOUT_CLK_SHIFT)
53 & SDHCI_TIMEOUT_CLK_MASK) |
54
55 ((0x21 << SDHCI_CLOCK_BASE_SHIFT)
56 & SDHCI_CLOCK_BASE_MASK) |
57
58 SDHCI_TIMEOUT_CLK_UNIT |
59 SDHCI_CAN_VDD_330 |
60 SDHCI_CAN_DO_HISPD |
61 SDHCI_CAN_DO_SDMA;
62 return 0;
63 }
64
ricoh_mmc_resume(struct sdhci_pci_chip * chip)65 static int ricoh_mmc_resume(struct sdhci_pci_chip *chip)
66 {
67 /* Apply a delay to allow controller to settle */
68 /* Otherwise it becomes confused if card state changed
69 during suspend */
70 msleep(500);
71 return 0;
72 }
73
74 static const struct sdhci_pci_fixes sdhci_ricoh = {
75 .probe = ricoh_probe,
76 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
77 SDHCI_QUIRK_FORCE_DMA |
78 SDHCI_QUIRK_CLOCK_BEFORE_RESET,
79 };
80
81 static const struct sdhci_pci_fixes sdhci_ricoh_mmc = {
82 .probe_slot = ricoh_mmc_probe_slot,
83 .resume = ricoh_mmc_resume,
84 .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR |
85 SDHCI_QUIRK_CLOCK_BEFORE_RESET |
86 SDHCI_QUIRK_NO_CARD_NO_RESET |
87 SDHCI_QUIRK_MISSING_CAPS
88 };
89
90 static const struct sdhci_pci_fixes sdhci_ene_712 = {
91 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
92 SDHCI_QUIRK_BROKEN_DMA,
93 };
94
95 static const struct sdhci_pci_fixes sdhci_ene_714 = {
96 .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE |
97 SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS |
98 SDHCI_QUIRK_BROKEN_DMA,
99 };
100
101 static const struct sdhci_pci_fixes sdhci_cafe = {
102 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER |
103 SDHCI_QUIRK_NO_BUSY_IRQ |
104 SDHCI_QUIRK_BROKEN_CARD_DETECTION |
105 SDHCI_QUIRK_BROKEN_TIMEOUT_VAL,
106 };
107
108 static const struct sdhci_pci_fixes sdhci_intel_qrk = {
109 .quirks = SDHCI_QUIRK_NO_HISPD_BIT,
110 };
111
mrst_hc_probe_slot(struct sdhci_pci_slot * slot)112 static int mrst_hc_probe_slot(struct sdhci_pci_slot *slot)
113 {
114 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
115 return 0;
116 }
117
118 /*
119 * ADMA operation is disabled for Moorestown platform due to
120 * hardware bugs.
121 */
mrst_hc_probe(struct sdhci_pci_chip * chip)122 static int mrst_hc_probe(struct sdhci_pci_chip *chip)
123 {
124 /*
125 * slots number is fixed here for MRST as SDIO3/5 are never used and
126 * have hardware bugs.
127 */
128 chip->num_slots = 1;
129 return 0;
130 }
131
pch_hc_probe_slot(struct sdhci_pci_slot * slot)132 static int pch_hc_probe_slot(struct sdhci_pci_slot *slot)
133 {
134 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
135 return 0;
136 }
137
138 #ifdef CONFIG_PM
139
sdhci_pci_sd_cd(int irq,void * dev_id)140 static irqreturn_t sdhci_pci_sd_cd(int irq, void *dev_id)
141 {
142 struct sdhci_pci_slot *slot = dev_id;
143 struct sdhci_host *host = slot->host;
144
145 mmc_detect_change(host->mmc, msecs_to_jiffies(200));
146 return IRQ_HANDLED;
147 }
148
sdhci_pci_add_own_cd(struct sdhci_pci_slot * slot)149 static void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
150 {
151 int err, irq, gpio = slot->cd_gpio;
152
153 slot->cd_gpio = -EINVAL;
154 slot->cd_irq = -EINVAL;
155
156 if (!gpio_is_valid(gpio))
157 return;
158
159 err = gpio_request(gpio, "sd_cd");
160 if (err < 0)
161 goto out;
162
163 err = gpio_direction_input(gpio);
164 if (err < 0)
165 goto out_free;
166
167 irq = gpio_to_irq(gpio);
168 if (irq < 0)
169 goto out_free;
170
171 err = request_irq(irq, sdhci_pci_sd_cd, IRQF_TRIGGER_RISING |
172 IRQF_TRIGGER_FALLING, "sd_cd", slot);
173 if (err)
174 goto out_free;
175
176 slot->cd_gpio = gpio;
177 slot->cd_irq = irq;
178
179 return;
180
181 out_free:
182 gpio_free(gpio);
183 out:
184 dev_warn(&slot->chip->pdev->dev, "failed to setup card detect wake up\n");
185 }
186
sdhci_pci_remove_own_cd(struct sdhci_pci_slot * slot)187 static void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
188 {
189 if (slot->cd_irq >= 0)
190 free_irq(slot->cd_irq, slot);
191 if (gpio_is_valid(slot->cd_gpio))
192 gpio_free(slot->cd_gpio);
193 }
194
195 #else
196
sdhci_pci_add_own_cd(struct sdhci_pci_slot * slot)197 static inline void sdhci_pci_add_own_cd(struct sdhci_pci_slot *slot)
198 {
199 }
200
sdhci_pci_remove_own_cd(struct sdhci_pci_slot * slot)201 static inline void sdhci_pci_remove_own_cd(struct sdhci_pci_slot *slot)
202 {
203 }
204
205 #endif
206
mfd_emmc_probe_slot(struct sdhci_pci_slot * slot)207 static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
208 {
209 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE;
210 slot->host->mmc->caps2 |= MMC_CAP2_BOOTPART_NOACC |
211 MMC_CAP2_HC_ERASE_SZ;
212 return 0;
213 }
214
mfd_sdio_probe_slot(struct sdhci_pci_slot * slot)215 static int mfd_sdio_probe_slot(struct sdhci_pci_slot *slot)
216 {
217 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE;
218 return 0;
219 }
220
221 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc0 = {
222 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
223 .probe_slot = mrst_hc_probe_slot,
224 };
225
226 static const struct sdhci_pci_fixes sdhci_intel_mrst_hc1_hc2 = {
227 .quirks = SDHCI_QUIRK_BROKEN_ADMA | SDHCI_QUIRK_NO_HISPD_BIT,
228 .probe = mrst_hc_probe,
229 };
230
231 static const struct sdhci_pci_fixes sdhci_intel_mfd_sd = {
232 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
233 .allow_runtime_pm = true,
234 .own_cd_for_runtime_pm = true,
235 };
236
237 static const struct sdhci_pci_fixes sdhci_intel_mfd_sdio = {
238 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
239 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON,
240 .allow_runtime_pm = true,
241 .probe_slot = mfd_sdio_probe_slot,
242 };
243
244 static const struct sdhci_pci_fixes sdhci_intel_mfd_emmc = {
245 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
246 .allow_runtime_pm = true,
247 .probe_slot = mfd_emmc_probe_slot,
248 };
249
250 static const struct sdhci_pci_fixes sdhci_intel_pch_sdio = {
251 .quirks = SDHCI_QUIRK_BROKEN_ADMA,
252 .probe_slot = pch_hc_probe_slot,
253 };
254
sdhci_pci_int_hw_reset(struct sdhci_host * host)255 static void sdhci_pci_int_hw_reset(struct sdhci_host *host)
256 {
257 u8 reg;
258
259 reg = sdhci_readb(host, SDHCI_POWER_CONTROL);
260 reg |= 0x10;
261 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
262 /* For eMMC, minimum is 1us but give it 9us for good measure */
263 udelay(9);
264 reg &= ~0x10;
265 sdhci_writeb(host, reg, SDHCI_POWER_CONTROL);
266 /* For eMMC, minimum is 200us but give it 300us for good measure */
267 usleep_range(300, 1000);
268 }
269
spt_select_drive_strength(struct sdhci_host * host,struct mmc_card * card,unsigned int max_dtr,int host_drv,int card_drv,int * drv_type)270 static int spt_select_drive_strength(struct sdhci_host *host,
271 struct mmc_card *card,
272 unsigned int max_dtr,
273 int host_drv, int card_drv, int *drv_type)
274 {
275 int drive_strength;
276
277 if (sdhci_pci_spt_drive_strength > 0)
278 drive_strength = sdhci_pci_spt_drive_strength & 0xf;
279 else
280 drive_strength = 0; /* Default 50-ohm */
281
282 if ((mmc_driver_type_mask(drive_strength) & card_drv) == 0)
283 drive_strength = 0; /* Default 50-ohm */
284
285 return drive_strength;
286 }
287
288 /* Try to read the drive strength from the card */
spt_read_drive_strength(struct sdhci_host * host)289 static void spt_read_drive_strength(struct sdhci_host *host)
290 {
291 u32 val, i, t;
292 u16 m;
293
294 if (sdhci_pci_spt_drive_strength)
295 return;
296
297 sdhci_pci_spt_drive_strength = -1;
298
299 m = sdhci_readw(host, SDHCI_HOST_CONTROL2) & 0x7;
300 if (m != 3 && m != 5)
301 return;
302 val = sdhci_readl(host, SDHCI_PRESENT_STATE);
303 if (val & 0x3)
304 return;
305 sdhci_writel(host, 0x007f0023, SDHCI_INT_ENABLE);
306 sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
307 sdhci_writew(host, 0x10, SDHCI_TRANSFER_MODE);
308 sdhci_writeb(host, 0xe, SDHCI_TIMEOUT_CONTROL);
309 sdhci_writew(host, 512, SDHCI_BLOCK_SIZE);
310 sdhci_writew(host, 1, SDHCI_BLOCK_COUNT);
311 sdhci_writel(host, 0, SDHCI_ARGUMENT);
312 sdhci_writew(host, 0x83b, SDHCI_COMMAND);
313 for (i = 0; i < 1000; i++) {
314 val = sdhci_readl(host, SDHCI_INT_STATUS);
315 if (val & 0xffff8000)
316 return;
317 if (val & 0x20)
318 break;
319 udelay(1);
320 }
321 val = sdhci_readl(host, SDHCI_PRESENT_STATE);
322 if (!(val & 0x800))
323 return;
324 for (i = 0; i < 47; i++)
325 val = sdhci_readl(host, SDHCI_BUFFER);
326 t = val & 0xf00;
327 if (t != 0x200 && t != 0x300)
328 return;
329
330 sdhci_pci_spt_drive_strength = 0x10 | ((val >> 12) & 0xf);
331 }
332
bxt_get_cd(struct mmc_host * mmc)333 static int bxt_get_cd(struct mmc_host *mmc)
334 {
335 int gpio_cd = mmc_gpio_get_cd(mmc);
336 struct sdhci_host *host = mmc_priv(mmc);
337 unsigned long flags;
338 int ret = 0;
339
340 if (!gpio_cd)
341 return 0;
342
343 pm_runtime_get_sync(mmc->parent);
344
345 spin_lock_irqsave(&host->lock, flags);
346
347 if (host->flags & SDHCI_DEVICE_DEAD)
348 goto out;
349
350 ret = !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
351 out:
352 spin_unlock_irqrestore(&host->lock, flags);
353
354 pm_runtime_mark_last_busy(mmc->parent);
355 pm_runtime_put_autosuspend(mmc->parent);
356
357 return ret;
358 }
359
byt_emmc_probe_slot(struct sdhci_pci_slot * slot)360 static int byt_emmc_probe_slot(struct sdhci_pci_slot *slot)
361 {
362 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
363 MMC_CAP_HW_RESET | MMC_CAP_1_8V_DDR |
364 MMC_CAP_WAIT_WHILE_BUSY;
365 slot->host->mmc->caps2 |= MMC_CAP2_HC_ERASE_SZ;
366 slot->hw_reset = sdhci_pci_int_hw_reset;
367 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BSW_EMMC)
368 slot->host->timeout_clk = 1000; /* 1000 kHz i.e. 1 MHz */
369 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_SPT_EMMC) {
370 spt_read_drive_strength(slot->host);
371 slot->select_drive_strength = spt_select_drive_strength;
372 }
373 return 0;
374 }
375
byt_sdio_probe_slot(struct sdhci_pci_slot * slot)376 static int byt_sdio_probe_slot(struct sdhci_pci_slot *slot)
377 {
378 slot->host->mmc->caps |= MMC_CAP_POWER_OFF_CARD | MMC_CAP_NONREMOVABLE |
379 MMC_CAP_WAIT_WHILE_BUSY;
380 return 0;
381 }
382
byt_sd_probe_slot(struct sdhci_pci_slot * slot)383 static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
384 {
385 slot->host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
386 slot->cd_con_id = NULL;
387 slot->cd_idx = 0;
388 slot->cd_override_level = true;
389 if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
390 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
391 slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD)
392 slot->host->mmc_host_ops.get_cd = bxt_get_cd;
393
394 return 0;
395 }
396
397 static const struct sdhci_pci_fixes sdhci_intel_byt_emmc = {
398 .allow_runtime_pm = true,
399 .probe_slot = byt_emmc_probe_slot,
400 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
401 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
402 SDHCI_QUIRK2_CAPS_BIT63_FOR_HS400 |
403 SDHCI_QUIRK2_STOP_WITH_TC,
404 };
405
406 static const struct sdhci_pci_fixes sdhci_intel_byt_sdio = {
407 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
408 .quirks2 = SDHCI_QUIRK2_HOST_OFF_CARD_ON |
409 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
410 .allow_runtime_pm = true,
411 .probe_slot = byt_sdio_probe_slot,
412 };
413
414 static const struct sdhci_pci_fixes sdhci_intel_byt_sd = {
415 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
416 .quirks2 = SDHCI_QUIRK2_CARD_ON_NEEDS_BUS_ON |
417 SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
418 SDHCI_QUIRK2_STOP_WITH_TC,
419 .allow_runtime_pm = true,
420 .own_cd_for_runtime_pm = true,
421 .probe_slot = byt_sd_probe_slot,
422 };
423
424 /* Define Host controllers for Intel Merrifield platform */
425 #define INTEL_MRFL_EMMC_0 0
426 #define INTEL_MRFL_EMMC_1 1
427
intel_mrfl_mmc_probe_slot(struct sdhci_pci_slot * slot)428 static int intel_mrfl_mmc_probe_slot(struct sdhci_pci_slot *slot)
429 {
430 if ((PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_0) &&
431 (PCI_FUNC(slot->chip->pdev->devfn) != INTEL_MRFL_EMMC_1))
432 /* SD support is not ready yet */
433 return -ENODEV;
434
435 slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA | MMC_CAP_NONREMOVABLE |
436 MMC_CAP_1_8V_DDR;
437
438 return 0;
439 }
440
441 static const struct sdhci_pci_fixes sdhci_intel_mrfl_mmc = {
442 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
443 .quirks2 = SDHCI_QUIRK2_BROKEN_HS200 |
444 SDHCI_QUIRK2_PRESET_VALUE_BROKEN,
445 .allow_runtime_pm = true,
446 .probe_slot = intel_mrfl_mmc_probe_slot,
447 };
448
449 /* O2Micro extra registers */
450 #define O2_SD_LOCK_WP 0xD3
451 #define O2_SD_MULTI_VCC3V 0xEE
452 #define O2_SD_CLKREQ 0xEC
453 #define O2_SD_CAPS 0xE0
454 #define O2_SD_ADMA1 0xE2
455 #define O2_SD_ADMA2 0xE7
456 #define O2_SD_INF_MOD 0xF1
457
jmicron_pmos(struct sdhci_pci_chip * chip,int on)458 static int jmicron_pmos(struct sdhci_pci_chip *chip, int on)
459 {
460 u8 scratch;
461 int ret;
462
463 ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch);
464 if (ret)
465 return ret;
466
467 /*
468 * Turn PMOS on [bit 0], set over current detection to 2.4 V
469 * [bit 1:2] and enable over current debouncing [bit 6].
470 */
471 if (on)
472 scratch |= 0x47;
473 else
474 scratch &= ~0x47;
475
476 return pci_write_config_byte(chip->pdev, 0xAE, scratch);
477 }
478
jmicron_probe(struct sdhci_pci_chip * chip)479 static int jmicron_probe(struct sdhci_pci_chip *chip)
480 {
481 int ret;
482 u16 mmcdev = 0;
483
484 if (chip->pdev->revision == 0) {
485 chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR |
486 SDHCI_QUIRK_32BIT_DMA_SIZE |
487 SDHCI_QUIRK_32BIT_ADMA_SIZE |
488 SDHCI_QUIRK_RESET_AFTER_REQUEST |
489 SDHCI_QUIRK_BROKEN_SMALL_PIO;
490 }
491
492 /*
493 * JMicron chips can have two interfaces to the same hardware
494 * in order to work around limitations in Microsoft's driver.
495 * We need to make sure we only bind to one of them.
496 *
497 * This code assumes two things:
498 *
499 * 1. The PCI code adds subfunctions in order.
500 *
501 * 2. The MMC interface has a lower subfunction number
502 * than the SD interface.
503 */
504 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD)
505 mmcdev = PCI_DEVICE_ID_JMICRON_JMB38X_MMC;
506 else if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD)
507 mmcdev = PCI_DEVICE_ID_JMICRON_JMB388_ESD;
508
509 if (mmcdev) {
510 struct pci_dev *sd_dev;
511
512 sd_dev = NULL;
513 while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON,
514 mmcdev, sd_dev)) != NULL) {
515 if ((PCI_SLOT(chip->pdev->devfn) ==
516 PCI_SLOT(sd_dev->devfn)) &&
517 (chip->pdev->bus == sd_dev->bus))
518 break;
519 }
520
521 if (sd_dev) {
522 pci_dev_put(sd_dev);
523 dev_info(&chip->pdev->dev, "Refusing to bind to "
524 "secondary interface.\n");
525 return -ENODEV;
526 }
527 }
528
529 /*
530 * JMicron chips need a bit of a nudge to enable the power
531 * output pins.
532 */
533 ret = jmicron_pmos(chip, 1);
534 if (ret) {
535 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
536 return ret;
537 }
538
539 /* quirk for unsable RO-detection on JM388 chips */
540 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_SD ||
541 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
542 chip->quirks |= SDHCI_QUIRK_UNSTABLE_RO_DETECT;
543
544 return 0;
545 }
546
jmicron_enable_mmc(struct sdhci_host * host,int on)547 static void jmicron_enable_mmc(struct sdhci_host *host, int on)
548 {
549 u8 scratch;
550
551 scratch = readb(host->ioaddr + 0xC0);
552
553 if (on)
554 scratch |= 0x01;
555 else
556 scratch &= ~0x01;
557
558 writeb(scratch, host->ioaddr + 0xC0);
559 }
560
jmicron_probe_slot(struct sdhci_pci_slot * slot)561 static int jmicron_probe_slot(struct sdhci_pci_slot *slot)
562 {
563 if (slot->chip->pdev->revision == 0) {
564 u16 version;
565
566 version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION);
567 version = (version & SDHCI_VENDOR_VER_MASK) >>
568 SDHCI_VENDOR_VER_SHIFT;
569
570 /*
571 * Older versions of the chip have lots of nasty glitches
572 * in the ADMA engine. It's best just to avoid it
573 * completely.
574 */
575 if (version < 0xAC)
576 slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
577 }
578
579 /* JM388 MMC doesn't support 1.8V while SD supports it */
580 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
581 slot->host->ocr_avail_sd = MMC_VDD_32_33 | MMC_VDD_33_34 |
582 MMC_VDD_29_30 | MMC_VDD_30_31 |
583 MMC_VDD_165_195; /* allow 1.8V */
584 slot->host->ocr_avail_mmc = MMC_VDD_32_33 | MMC_VDD_33_34 |
585 MMC_VDD_29_30 | MMC_VDD_30_31; /* no 1.8V for MMC */
586 }
587
588 /*
589 * The secondary interface requires a bit set to get the
590 * interrupts.
591 */
592 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
593 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
594 jmicron_enable_mmc(slot->host, 1);
595
596 slot->host->mmc->caps |= MMC_CAP_BUS_WIDTH_TEST;
597
598 return 0;
599 }
600
jmicron_remove_slot(struct sdhci_pci_slot * slot,int dead)601 static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead)
602 {
603 if (dead)
604 return;
605
606 if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
607 slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD)
608 jmicron_enable_mmc(slot->host, 0);
609 }
610
jmicron_suspend(struct sdhci_pci_chip * chip)611 static int jmicron_suspend(struct sdhci_pci_chip *chip)
612 {
613 int i;
614
615 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
616 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
617 for (i = 0; i < chip->num_slots; i++)
618 jmicron_enable_mmc(chip->slots[i]->host, 0);
619 }
620
621 return 0;
622 }
623
jmicron_resume(struct sdhci_pci_chip * chip)624 static int jmicron_resume(struct sdhci_pci_chip *chip)
625 {
626 int ret, i;
627
628 if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC ||
629 chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB388_ESD) {
630 for (i = 0; i < chip->num_slots; i++)
631 jmicron_enable_mmc(chip->slots[i]->host, 1);
632 }
633
634 ret = jmicron_pmos(chip, 1);
635 if (ret) {
636 dev_err(&chip->pdev->dev, "Failure enabling card power\n");
637 return ret;
638 }
639
640 return 0;
641 }
642
643 static const struct sdhci_pci_fixes sdhci_o2 = {
644 .probe = sdhci_pci_o2_probe,
645 .quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
646 .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
647 .probe_slot = sdhci_pci_o2_probe_slot,
648 .resume = sdhci_pci_o2_resume,
649 };
650
651 static const struct sdhci_pci_fixes sdhci_jmicron = {
652 .probe = jmicron_probe,
653
654 .probe_slot = jmicron_probe_slot,
655 .remove_slot = jmicron_remove_slot,
656
657 .suspend = jmicron_suspend,
658 .resume = jmicron_resume,
659 };
660
661 /* SysKonnect CardBus2SDIO extra registers */
662 #define SYSKT_CTRL 0x200
663 #define SYSKT_RDFIFO_STAT 0x204
664 #define SYSKT_WRFIFO_STAT 0x208
665 #define SYSKT_POWER_DATA 0x20c
666 #define SYSKT_POWER_330 0xef
667 #define SYSKT_POWER_300 0xf8
668 #define SYSKT_POWER_184 0xcc
669 #define SYSKT_POWER_CMD 0x20d
670 #define SYSKT_POWER_START (1 << 7)
671 #define SYSKT_POWER_STATUS 0x20e
672 #define SYSKT_POWER_STATUS_OK (1 << 0)
673 #define SYSKT_BOARD_REV 0x210
674 #define SYSKT_CHIP_REV 0x211
675 #define SYSKT_CONF_DATA 0x212
676 #define SYSKT_CONF_DATA_1V8 (1 << 2)
677 #define SYSKT_CONF_DATA_2V5 (1 << 1)
678 #define SYSKT_CONF_DATA_3V3 (1 << 0)
679
syskt_probe(struct sdhci_pci_chip * chip)680 static int syskt_probe(struct sdhci_pci_chip *chip)
681 {
682 if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
683 chip->pdev->class &= ~0x0000FF;
684 chip->pdev->class |= PCI_SDHCI_IFDMA;
685 }
686 return 0;
687 }
688
syskt_probe_slot(struct sdhci_pci_slot * slot)689 static int syskt_probe_slot(struct sdhci_pci_slot *slot)
690 {
691 int tm, ps;
692
693 u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV);
694 u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV);
695 dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, "
696 "board rev %d.%d, chip rev %d.%d\n",
697 board_rev >> 4, board_rev & 0xf,
698 chip_rev >> 4, chip_rev & 0xf);
699 if (chip_rev >= 0x20)
700 slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA;
701
702 writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA);
703 writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD);
704 udelay(50);
705 tm = 10; /* Wait max 1 ms */
706 do {
707 ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS);
708 if (ps & SYSKT_POWER_STATUS_OK)
709 break;
710 udelay(100);
711 } while (--tm);
712 if (!tm) {
713 dev_err(&slot->chip->pdev->dev,
714 "power regulator never stabilized");
715 writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD);
716 return -ENODEV;
717 }
718
719 return 0;
720 }
721
722 static const struct sdhci_pci_fixes sdhci_syskt = {
723 .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER,
724 .probe = syskt_probe,
725 .probe_slot = syskt_probe_slot,
726 };
727
via_probe(struct sdhci_pci_chip * chip)728 static int via_probe(struct sdhci_pci_chip *chip)
729 {
730 if (chip->pdev->revision == 0x10)
731 chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
732
733 return 0;
734 }
735
736 static const struct sdhci_pci_fixes sdhci_via = {
737 .probe = via_probe,
738 };
739
rtsx_probe_slot(struct sdhci_pci_slot * slot)740 static int rtsx_probe_slot(struct sdhci_pci_slot *slot)
741 {
742 slot->host->mmc->caps2 |= MMC_CAP2_HS200;
743 return 0;
744 }
745
746 static const struct sdhci_pci_fixes sdhci_rtsx = {
747 .quirks2 = SDHCI_QUIRK2_PRESET_VALUE_BROKEN |
748 SDHCI_QUIRK2_BROKEN_64_BIT_DMA |
749 SDHCI_QUIRK2_BROKEN_DDR50,
750 .probe_slot = rtsx_probe_slot,
751 };
752
753 /*AMD chipset generation*/
754 enum amd_chipset_gen {
755 AMD_CHIPSET_BEFORE_ML,
756 AMD_CHIPSET_CZ,
757 AMD_CHIPSET_NL,
758 AMD_CHIPSET_UNKNOWN,
759 };
760
amd_probe(struct sdhci_pci_chip * chip)761 static int amd_probe(struct sdhci_pci_chip *chip)
762 {
763 struct pci_dev *smbus_dev;
764 enum amd_chipset_gen gen;
765
766 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
767 PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
768 if (smbus_dev) {
769 gen = AMD_CHIPSET_BEFORE_ML;
770 } else {
771 smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
772 PCI_DEVICE_ID_AMD_KERNCZ_SMBUS, NULL);
773 if (smbus_dev) {
774 if (smbus_dev->revision < 0x51)
775 gen = AMD_CHIPSET_CZ;
776 else
777 gen = AMD_CHIPSET_NL;
778 } else {
779 gen = AMD_CHIPSET_UNKNOWN;
780 }
781 }
782
783 if ((gen == AMD_CHIPSET_BEFORE_ML) || (gen == AMD_CHIPSET_CZ)) {
784 chip->quirks2 |= SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD;
785 chip->quirks2 |= SDHCI_QUIRK2_BROKEN_HS200;
786 }
787
788 return 0;
789 }
790
791 static const struct sdhci_pci_fixes sdhci_amd = {
792 .probe = amd_probe,
793 };
794
795 static const struct pci_device_id pci_ids[] = {
796 {
797 .vendor = PCI_VENDOR_ID_RICOH,
798 .device = PCI_DEVICE_ID_RICOH_R5C822,
799 .subvendor = PCI_ANY_ID,
800 .subdevice = PCI_ANY_ID,
801 .driver_data = (kernel_ulong_t)&sdhci_ricoh,
802 },
803
804 {
805 .vendor = PCI_VENDOR_ID_RICOH,
806 .device = 0x843,
807 .subvendor = PCI_ANY_ID,
808 .subdevice = PCI_ANY_ID,
809 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
810 },
811
812 {
813 .vendor = PCI_VENDOR_ID_RICOH,
814 .device = 0xe822,
815 .subvendor = PCI_ANY_ID,
816 .subdevice = PCI_ANY_ID,
817 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
818 },
819
820 {
821 .vendor = PCI_VENDOR_ID_RICOH,
822 .device = 0xe823,
823 .subvendor = PCI_ANY_ID,
824 .subdevice = PCI_ANY_ID,
825 .driver_data = (kernel_ulong_t)&sdhci_ricoh_mmc,
826 },
827
828 {
829 .vendor = PCI_VENDOR_ID_ENE,
830 .device = PCI_DEVICE_ID_ENE_CB712_SD,
831 .subvendor = PCI_ANY_ID,
832 .subdevice = PCI_ANY_ID,
833 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
834 },
835
836 {
837 .vendor = PCI_VENDOR_ID_ENE,
838 .device = PCI_DEVICE_ID_ENE_CB712_SD_2,
839 .subvendor = PCI_ANY_ID,
840 .subdevice = PCI_ANY_ID,
841 .driver_data = (kernel_ulong_t)&sdhci_ene_712,
842 },
843
844 {
845 .vendor = PCI_VENDOR_ID_ENE,
846 .device = PCI_DEVICE_ID_ENE_CB714_SD,
847 .subvendor = PCI_ANY_ID,
848 .subdevice = PCI_ANY_ID,
849 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
850 },
851
852 {
853 .vendor = PCI_VENDOR_ID_ENE,
854 .device = PCI_DEVICE_ID_ENE_CB714_SD_2,
855 .subvendor = PCI_ANY_ID,
856 .subdevice = PCI_ANY_ID,
857 .driver_data = (kernel_ulong_t)&sdhci_ene_714,
858 },
859
860 {
861 .vendor = PCI_VENDOR_ID_MARVELL,
862 .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD,
863 .subvendor = PCI_ANY_ID,
864 .subdevice = PCI_ANY_ID,
865 .driver_data = (kernel_ulong_t)&sdhci_cafe,
866 },
867
868 {
869 .vendor = PCI_VENDOR_ID_JMICRON,
870 .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD,
871 .subvendor = PCI_ANY_ID,
872 .subdevice = PCI_ANY_ID,
873 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
874 },
875
876 {
877 .vendor = PCI_VENDOR_ID_JMICRON,
878 .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC,
879 .subvendor = PCI_ANY_ID,
880 .subdevice = PCI_ANY_ID,
881 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
882 },
883
884 {
885 .vendor = PCI_VENDOR_ID_JMICRON,
886 .device = PCI_DEVICE_ID_JMICRON_JMB388_SD,
887 .subvendor = PCI_ANY_ID,
888 .subdevice = PCI_ANY_ID,
889 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
890 },
891
892 {
893 .vendor = PCI_VENDOR_ID_JMICRON,
894 .device = PCI_DEVICE_ID_JMICRON_JMB388_ESD,
895 .subvendor = PCI_ANY_ID,
896 .subdevice = PCI_ANY_ID,
897 .driver_data = (kernel_ulong_t)&sdhci_jmicron,
898 },
899
900 {
901 .vendor = PCI_VENDOR_ID_SYSKONNECT,
902 .device = 0x8000,
903 .subvendor = PCI_ANY_ID,
904 .subdevice = PCI_ANY_ID,
905 .driver_data = (kernel_ulong_t)&sdhci_syskt,
906 },
907
908 {
909 .vendor = PCI_VENDOR_ID_VIA,
910 .device = 0x95d0,
911 .subvendor = PCI_ANY_ID,
912 .subdevice = PCI_ANY_ID,
913 .driver_data = (kernel_ulong_t)&sdhci_via,
914 },
915
916 {
917 .vendor = PCI_VENDOR_ID_REALTEK,
918 .device = 0x5250,
919 .subvendor = PCI_ANY_ID,
920 .subdevice = PCI_ANY_ID,
921 .driver_data = (kernel_ulong_t)&sdhci_rtsx,
922 },
923
924 {
925 .vendor = PCI_VENDOR_ID_INTEL,
926 .device = PCI_DEVICE_ID_INTEL_QRK_SD,
927 .subvendor = PCI_ANY_ID,
928 .subdevice = PCI_ANY_ID,
929 .driver_data = (kernel_ulong_t)&sdhci_intel_qrk,
930 },
931
932 {
933 .vendor = PCI_VENDOR_ID_INTEL,
934 .device = PCI_DEVICE_ID_INTEL_MRST_SD0,
935 .subvendor = PCI_ANY_ID,
936 .subdevice = PCI_ANY_ID,
937 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc0,
938 },
939
940 {
941 .vendor = PCI_VENDOR_ID_INTEL,
942 .device = PCI_DEVICE_ID_INTEL_MRST_SD1,
943 .subvendor = PCI_ANY_ID,
944 .subdevice = PCI_ANY_ID,
945 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
946 },
947
948 {
949 .vendor = PCI_VENDOR_ID_INTEL,
950 .device = PCI_DEVICE_ID_INTEL_MRST_SD2,
951 .subvendor = PCI_ANY_ID,
952 .subdevice = PCI_ANY_ID,
953 .driver_data = (kernel_ulong_t)&sdhci_intel_mrst_hc1_hc2,
954 },
955
956 {
957 .vendor = PCI_VENDOR_ID_INTEL,
958 .device = PCI_DEVICE_ID_INTEL_MFD_SD,
959 .subvendor = PCI_ANY_ID,
960 .subdevice = PCI_ANY_ID,
961 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
962 },
963
964 {
965 .vendor = PCI_VENDOR_ID_INTEL,
966 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO1,
967 .subvendor = PCI_ANY_ID,
968 .subdevice = PCI_ANY_ID,
969 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
970 },
971
972 {
973 .vendor = PCI_VENDOR_ID_INTEL,
974 .device = PCI_DEVICE_ID_INTEL_MFD_SDIO2,
975 .subvendor = PCI_ANY_ID,
976 .subdevice = PCI_ANY_ID,
977 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
978 },
979
980 {
981 .vendor = PCI_VENDOR_ID_INTEL,
982 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC0,
983 .subvendor = PCI_ANY_ID,
984 .subdevice = PCI_ANY_ID,
985 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
986 },
987
988 {
989 .vendor = PCI_VENDOR_ID_INTEL,
990 .device = PCI_DEVICE_ID_INTEL_MFD_EMMC1,
991 .subvendor = PCI_ANY_ID,
992 .subdevice = PCI_ANY_ID,
993 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
994 },
995
996 {
997 .vendor = PCI_VENDOR_ID_INTEL,
998 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO0,
999 .subvendor = PCI_ANY_ID,
1000 .subdevice = PCI_ANY_ID,
1001 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
1002 },
1003
1004 {
1005 .vendor = PCI_VENDOR_ID_INTEL,
1006 .device = PCI_DEVICE_ID_INTEL_PCH_SDIO1,
1007 .subvendor = PCI_ANY_ID,
1008 .subdevice = PCI_ANY_ID,
1009 .driver_data = (kernel_ulong_t)&sdhci_intel_pch_sdio,
1010 },
1011
1012 {
1013 .vendor = PCI_VENDOR_ID_INTEL,
1014 .device = PCI_DEVICE_ID_INTEL_BYT_EMMC,
1015 .subvendor = PCI_ANY_ID,
1016 .subdevice = PCI_ANY_ID,
1017 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1018 },
1019
1020 {
1021 .vendor = PCI_VENDOR_ID_INTEL,
1022 .device = PCI_DEVICE_ID_INTEL_BYT_SDIO,
1023 .subvendor = PCI_ANY_ID,
1024 .subdevice = PCI_ANY_ID,
1025 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1026 },
1027
1028 {
1029 .vendor = PCI_VENDOR_ID_INTEL,
1030 .device = PCI_DEVICE_ID_INTEL_BYT_SD,
1031 .subvendor = PCI_ANY_ID,
1032 .subdevice = PCI_ANY_ID,
1033 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1034 },
1035
1036 {
1037 .vendor = PCI_VENDOR_ID_INTEL,
1038 .device = PCI_DEVICE_ID_INTEL_BYT_EMMC2,
1039 .subvendor = PCI_ANY_ID,
1040 .subdevice = PCI_ANY_ID,
1041 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1042 },
1043
1044 {
1045 .vendor = PCI_VENDOR_ID_INTEL,
1046 .device = PCI_DEVICE_ID_INTEL_BSW_EMMC,
1047 .subvendor = PCI_ANY_ID,
1048 .subdevice = PCI_ANY_ID,
1049 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1050 },
1051
1052 {
1053 .vendor = PCI_VENDOR_ID_INTEL,
1054 .device = PCI_DEVICE_ID_INTEL_BSW_SDIO,
1055 .subvendor = PCI_ANY_ID,
1056 .subdevice = PCI_ANY_ID,
1057 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1058 },
1059
1060 {
1061 .vendor = PCI_VENDOR_ID_INTEL,
1062 .device = PCI_DEVICE_ID_INTEL_BSW_SD,
1063 .subvendor = PCI_ANY_ID,
1064 .subdevice = PCI_ANY_ID,
1065 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1066 },
1067
1068 {
1069 .vendor = PCI_VENDOR_ID_INTEL,
1070 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO0,
1071 .subvendor = PCI_ANY_ID,
1072 .subdevice = PCI_ANY_ID,
1073 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sd,
1074 },
1075
1076 {
1077 .vendor = PCI_VENDOR_ID_INTEL,
1078 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO1,
1079 .subvendor = PCI_ANY_ID,
1080 .subdevice = PCI_ANY_ID,
1081 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
1082 },
1083
1084 {
1085 .vendor = PCI_VENDOR_ID_INTEL,
1086 .device = PCI_DEVICE_ID_INTEL_CLV_SDIO2,
1087 .subvendor = PCI_ANY_ID,
1088 .subdevice = PCI_ANY_ID,
1089 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_sdio,
1090 },
1091
1092 {
1093 .vendor = PCI_VENDOR_ID_INTEL,
1094 .device = PCI_DEVICE_ID_INTEL_CLV_EMMC0,
1095 .subvendor = PCI_ANY_ID,
1096 .subdevice = PCI_ANY_ID,
1097 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1098 },
1099
1100 {
1101 .vendor = PCI_VENDOR_ID_INTEL,
1102 .device = PCI_DEVICE_ID_INTEL_CLV_EMMC1,
1103 .subvendor = PCI_ANY_ID,
1104 .subdevice = PCI_ANY_ID,
1105 .driver_data = (kernel_ulong_t)&sdhci_intel_mfd_emmc,
1106 },
1107
1108 {
1109 .vendor = PCI_VENDOR_ID_INTEL,
1110 .device = PCI_DEVICE_ID_INTEL_MRFL_MMC,
1111 .subvendor = PCI_ANY_ID,
1112 .subdevice = PCI_ANY_ID,
1113 .driver_data = (kernel_ulong_t)&sdhci_intel_mrfl_mmc,
1114 },
1115
1116 {
1117 .vendor = PCI_VENDOR_ID_INTEL,
1118 .device = PCI_DEVICE_ID_INTEL_SPT_EMMC,
1119 .subvendor = PCI_ANY_ID,
1120 .subdevice = PCI_ANY_ID,
1121 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1122 },
1123
1124 {
1125 .vendor = PCI_VENDOR_ID_INTEL,
1126 .device = PCI_DEVICE_ID_INTEL_SPT_SDIO,
1127 .subvendor = PCI_ANY_ID,
1128 .subdevice = PCI_ANY_ID,
1129 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1130 },
1131
1132 {
1133 .vendor = PCI_VENDOR_ID_INTEL,
1134 .device = PCI_DEVICE_ID_INTEL_SPT_SD,
1135 .subvendor = PCI_ANY_ID,
1136 .subdevice = PCI_ANY_ID,
1137 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1138 },
1139
1140 {
1141 .vendor = PCI_VENDOR_ID_INTEL,
1142 .device = PCI_DEVICE_ID_INTEL_DNV_EMMC,
1143 .subvendor = PCI_ANY_ID,
1144 .subdevice = PCI_ANY_ID,
1145 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1146 },
1147
1148 {
1149 .vendor = PCI_VENDOR_ID_INTEL,
1150 .device = PCI_DEVICE_ID_INTEL_BXT_EMMC,
1151 .subvendor = PCI_ANY_ID,
1152 .subdevice = PCI_ANY_ID,
1153 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1154 },
1155
1156 {
1157 .vendor = PCI_VENDOR_ID_INTEL,
1158 .device = PCI_DEVICE_ID_INTEL_BXT_SDIO,
1159 .subvendor = PCI_ANY_ID,
1160 .subdevice = PCI_ANY_ID,
1161 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1162 },
1163
1164 {
1165 .vendor = PCI_VENDOR_ID_INTEL,
1166 .device = PCI_DEVICE_ID_INTEL_BXT_SD,
1167 .subvendor = PCI_ANY_ID,
1168 .subdevice = PCI_ANY_ID,
1169 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1170 },
1171
1172 {
1173 .vendor = PCI_VENDOR_ID_INTEL,
1174 .device = PCI_DEVICE_ID_INTEL_BXTM_EMMC,
1175 .subvendor = PCI_ANY_ID,
1176 .subdevice = PCI_ANY_ID,
1177 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1178 },
1179
1180 {
1181 .vendor = PCI_VENDOR_ID_INTEL,
1182 .device = PCI_DEVICE_ID_INTEL_BXTM_SDIO,
1183 .subvendor = PCI_ANY_ID,
1184 .subdevice = PCI_ANY_ID,
1185 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1186 },
1187
1188 {
1189 .vendor = PCI_VENDOR_ID_INTEL,
1190 .device = PCI_DEVICE_ID_INTEL_BXTM_SD,
1191 .subvendor = PCI_ANY_ID,
1192 .subdevice = PCI_ANY_ID,
1193 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1194 },
1195
1196 {
1197 .vendor = PCI_VENDOR_ID_INTEL,
1198 .device = PCI_DEVICE_ID_INTEL_APL_EMMC,
1199 .subvendor = PCI_ANY_ID,
1200 .subdevice = PCI_ANY_ID,
1201 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_emmc,
1202 },
1203
1204 {
1205 .vendor = PCI_VENDOR_ID_INTEL,
1206 .device = PCI_DEVICE_ID_INTEL_APL_SDIO,
1207 .subvendor = PCI_ANY_ID,
1208 .subdevice = PCI_ANY_ID,
1209 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sdio,
1210 },
1211
1212 {
1213 .vendor = PCI_VENDOR_ID_INTEL,
1214 .device = PCI_DEVICE_ID_INTEL_APL_SD,
1215 .subvendor = PCI_ANY_ID,
1216 .subdevice = PCI_ANY_ID,
1217 .driver_data = (kernel_ulong_t)&sdhci_intel_byt_sd,
1218 },
1219
1220 {
1221 .vendor = PCI_VENDOR_ID_O2,
1222 .device = PCI_DEVICE_ID_O2_8120,
1223 .subvendor = PCI_ANY_ID,
1224 .subdevice = PCI_ANY_ID,
1225 .driver_data = (kernel_ulong_t)&sdhci_o2,
1226 },
1227
1228 {
1229 .vendor = PCI_VENDOR_ID_O2,
1230 .device = PCI_DEVICE_ID_O2_8220,
1231 .subvendor = PCI_ANY_ID,
1232 .subdevice = PCI_ANY_ID,
1233 .driver_data = (kernel_ulong_t)&sdhci_o2,
1234 },
1235
1236 {
1237 .vendor = PCI_VENDOR_ID_O2,
1238 .device = PCI_DEVICE_ID_O2_8221,
1239 .subvendor = PCI_ANY_ID,
1240 .subdevice = PCI_ANY_ID,
1241 .driver_data = (kernel_ulong_t)&sdhci_o2,
1242 },
1243
1244 {
1245 .vendor = PCI_VENDOR_ID_O2,
1246 .device = PCI_DEVICE_ID_O2_8320,
1247 .subvendor = PCI_ANY_ID,
1248 .subdevice = PCI_ANY_ID,
1249 .driver_data = (kernel_ulong_t)&sdhci_o2,
1250 },
1251
1252 {
1253 .vendor = PCI_VENDOR_ID_O2,
1254 .device = PCI_DEVICE_ID_O2_8321,
1255 .subvendor = PCI_ANY_ID,
1256 .subdevice = PCI_ANY_ID,
1257 .driver_data = (kernel_ulong_t)&sdhci_o2,
1258 },
1259
1260 {
1261 .vendor = PCI_VENDOR_ID_O2,
1262 .device = PCI_DEVICE_ID_O2_FUJIN2,
1263 .subvendor = PCI_ANY_ID,
1264 .subdevice = PCI_ANY_ID,
1265 .driver_data = (kernel_ulong_t)&sdhci_o2,
1266 },
1267
1268 {
1269 .vendor = PCI_VENDOR_ID_O2,
1270 .device = PCI_DEVICE_ID_O2_SDS0,
1271 .subvendor = PCI_ANY_ID,
1272 .subdevice = PCI_ANY_ID,
1273 .driver_data = (kernel_ulong_t)&sdhci_o2,
1274 },
1275
1276 {
1277 .vendor = PCI_VENDOR_ID_O2,
1278 .device = PCI_DEVICE_ID_O2_SDS1,
1279 .subvendor = PCI_ANY_ID,
1280 .subdevice = PCI_ANY_ID,
1281 .driver_data = (kernel_ulong_t)&sdhci_o2,
1282 },
1283
1284 {
1285 .vendor = PCI_VENDOR_ID_O2,
1286 .device = PCI_DEVICE_ID_O2_SEABIRD0,
1287 .subvendor = PCI_ANY_ID,
1288 .subdevice = PCI_ANY_ID,
1289 .driver_data = (kernel_ulong_t)&sdhci_o2,
1290 },
1291
1292 {
1293 .vendor = PCI_VENDOR_ID_O2,
1294 .device = PCI_DEVICE_ID_O2_SEABIRD1,
1295 .subvendor = PCI_ANY_ID,
1296 .subdevice = PCI_ANY_ID,
1297 .driver_data = (kernel_ulong_t)&sdhci_o2,
1298 },
1299 {
1300 .vendor = PCI_VENDOR_ID_AMD,
1301 .device = PCI_ANY_ID,
1302 .class = PCI_CLASS_SYSTEM_SDHCI << 8,
1303 .class_mask = 0xFFFF00,
1304 .subvendor = PCI_ANY_ID,
1305 .subdevice = PCI_ANY_ID,
1306 .driver_data = (kernel_ulong_t)&sdhci_amd,
1307 },
1308 { /* Generic SD host controller */
1309 PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
1310 },
1311
1312 { /* end: all zeroes */ },
1313 };
1314
1315 MODULE_DEVICE_TABLE(pci, pci_ids);
1316
1317 /*****************************************************************************\
1318 * *
1319 * SDHCI core callbacks *
1320 * *
1321 \*****************************************************************************/
1322
sdhci_pci_enable_dma(struct sdhci_host * host)1323 static int sdhci_pci_enable_dma(struct sdhci_host *host)
1324 {
1325 struct sdhci_pci_slot *slot;
1326 struct pci_dev *pdev;
1327 int ret = -1;
1328
1329 slot = sdhci_priv(host);
1330 pdev = slot->chip->pdev;
1331
1332 if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) &&
1333 ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) &&
1334 (host->flags & SDHCI_USE_SDMA)) {
1335 dev_warn(&pdev->dev, "Will use DMA mode even though HW "
1336 "doesn't fully claim to support it.\n");
1337 }
1338
1339 if (host->flags & SDHCI_USE_64_BIT_DMA) {
1340 if (host->quirks2 & SDHCI_QUIRK2_BROKEN_64_BIT_DMA) {
1341 host->flags &= ~SDHCI_USE_64_BIT_DMA;
1342 } else {
1343 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
1344 if (ret)
1345 dev_warn(&pdev->dev, "Failed to set 64-bit DMA mask\n");
1346 }
1347 }
1348 if (ret)
1349 ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1350 if (ret)
1351 return ret;
1352
1353 pci_set_master(pdev);
1354
1355 return 0;
1356 }
1357
sdhci_pci_set_bus_width(struct sdhci_host * host,int width)1358 static void sdhci_pci_set_bus_width(struct sdhci_host *host, int width)
1359 {
1360 u8 ctrl;
1361
1362 ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
1363
1364 switch (width) {
1365 case MMC_BUS_WIDTH_8:
1366 ctrl |= SDHCI_CTRL_8BITBUS;
1367 ctrl &= ~SDHCI_CTRL_4BITBUS;
1368 break;
1369 case MMC_BUS_WIDTH_4:
1370 ctrl |= SDHCI_CTRL_4BITBUS;
1371 ctrl &= ~SDHCI_CTRL_8BITBUS;
1372 break;
1373 default:
1374 ctrl &= ~(SDHCI_CTRL_8BITBUS | SDHCI_CTRL_4BITBUS);
1375 break;
1376 }
1377
1378 sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
1379 }
1380
sdhci_pci_gpio_hw_reset(struct sdhci_host * host)1381 static void sdhci_pci_gpio_hw_reset(struct sdhci_host *host)
1382 {
1383 struct sdhci_pci_slot *slot = sdhci_priv(host);
1384 int rst_n_gpio = slot->rst_n_gpio;
1385
1386 if (!gpio_is_valid(rst_n_gpio))
1387 return;
1388 gpio_set_value_cansleep(rst_n_gpio, 0);
1389 /* For eMMC, minimum is 1us but give it 10us for good measure */
1390 udelay(10);
1391 gpio_set_value_cansleep(rst_n_gpio, 1);
1392 /* For eMMC, minimum is 200us but give it 300us for good measure */
1393 usleep_range(300, 1000);
1394 }
1395
sdhci_pci_hw_reset(struct sdhci_host * host)1396 static void sdhci_pci_hw_reset(struct sdhci_host *host)
1397 {
1398 struct sdhci_pci_slot *slot = sdhci_priv(host);
1399
1400 if (slot->hw_reset)
1401 slot->hw_reset(host);
1402 }
1403
sdhci_pci_select_drive_strength(struct sdhci_host * host,struct mmc_card * card,unsigned int max_dtr,int host_drv,int card_drv,int * drv_type)1404 static int sdhci_pci_select_drive_strength(struct sdhci_host *host,
1405 struct mmc_card *card,
1406 unsigned int max_dtr, int host_drv,
1407 int card_drv, int *drv_type)
1408 {
1409 struct sdhci_pci_slot *slot = sdhci_priv(host);
1410
1411 if (!slot->select_drive_strength)
1412 return 0;
1413
1414 return slot->select_drive_strength(host, card, max_dtr, host_drv,
1415 card_drv, drv_type);
1416 }
1417
1418 static const struct sdhci_ops sdhci_pci_ops = {
1419 .set_clock = sdhci_set_clock,
1420 .enable_dma = sdhci_pci_enable_dma,
1421 .set_bus_width = sdhci_pci_set_bus_width,
1422 .reset = sdhci_reset,
1423 .set_uhs_signaling = sdhci_set_uhs_signaling,
1424 .hw_reset = sdhci_pci_hw_reset,
1425 .select_drive_strength = sdhci_pci_select_drive_strength,
1426 };
1427
1428 /*****************************************************************************\
1429 * *
1430 * Suspend/resume *
1431 * *
1432 \*****************************************************************************/
1433
1434 #ifdef CONFIG_PM
1435
sdhci_pci_suspend(struct device * dev)1436 static int sdhci_pci_suspend(struct device *dev)
1437 {
1438 struct pci_dev *pdev = to_pci_dev(dev);
1439 struct sdhci_pci_chip *chip;
1440 struct sdhci_pci_slot *slot;
1441 mmc_pm_flag_t slot_pm_flags;
1442 mmc_pm_flag_t pm_flags = 0;
1443 int i, ret;
1444
1445 chip = pci_get_drvdata(pdev);
1446 if (!chip)
1447 return 0;
1448
1449 for (i = 0; i < chip->num_slots; i++) {
1450 slot = chip->slots[i];
1451 if (!slot)
1452 continue;
1453
1454 ret = sdhci_suspend_host(slot->host);
1455
1456 if (ret)
1457 goto err_pci_suspend;
1458
1459 slot_pm_flags = slot->host->mmc->pm_flags;
1460 if (slot_pm_flags & MMC_PM_WAKE_SDIO_IRQ)
1461 sdhci_enable_irq_wakeups(slot->host);
1462
1463 pm_flags |= slot_pm_flags;
1464 }
1465
1466 if (chip->fixes && chip->fixes->suspend) {
1467 ret = chip->fixes->suspend(chip);
1468 if (ret)
1469 goto err_pci_suspend;
1470 }
1471
1472 if (pm_flags & MMC_PM_KEEP_POWER) {
1473 if (pm_flags & MMC_PM_WAKE_SDIO_IRQ)
1474 device_init_wakeup(dev, true);
1475 else
1476 device_init_wakeup(dev, false);
1477 } else
1478 device_init_wakeup(dev, false);
1479
1480 return 0;
1481
1482 err_pci_suspend:
1483 while (--i >= 0)
1484 sdhci_resume_host(chip->slots[i]->host);
1485 return ret;
1486 }
1487
sdhci_pci_resume(struct device * dev)1488 static int sdhci_pci_resume(struct device *dev)
1489 {
1490 struct pci_dev *pdev = to_pci_dev(dev);
1491 struct sdhci_pci_chip *chip;
1492 struct sdhci_pci_slot *slot;
1493 int i, ret;
1494
1495 chip = pci_get_drvdata(pdev);
1496 if (!chip)
1497 return 0;
1498
1499 if (chip->fixes && chip->fixes->resume) {
1500 ret = chip->fixes->resume(chip);
1501 if (ret)
1502 return ret;
1503 }
1504
1505 for (i = 0; i < chip->num_slots; i++) {
1506 slot = chip->slots[i];
1507 if (!slot)
1508 continue;
1509
1510 ret = sdhci_resume_host(slot->host);
1511 if (ret)
1512 return ret;
1513 }
1514
1515 return 0;
1516 }
1517
sdhci_pci_runtime_suspend(struct device * dev)1518 static int sdhci_pci_runtime_suspend(struct device *dev)
1519 {
1520 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
1521 struct sdhci_pci_chip *chip;
1522 struct sdhci_pci_slot *slot;
1523 int i, ret;
1524
1525 chip = pci_get_drvdata(pdev);
1526 if (!chip)
1527 return 0;
1528
1529 for (i = 0; i < chip->num_slots; i++) {
1530 slot = chip->slots[i];
1531 if (!slot)
1532 continue;
1533
1534 ret = sdhci_runtime_suspend_host(slot->host);
1535
1536 if (ret)
1537 goto err_pci_runtime_suspend;
1538 }
1539
1540 if (chip->fixes && chip->fixes->suspend) {
1541 ret = chip->fixes->suspend(chip);
1542 if (ret)
1543 goto err_pci_runtime_suspend;
1544 }
1545
1546 return 0;
1547
1548 err_pci_runtime_suspend:
1549 while (--i >= 0)
1550 sdhci_runtime_resume_host(chip->slots[i]->host);
1551 return ret;
1552 }
1553
sdhci_pci_runtime_resume(struct device * dev)1554 static int sdhci_pci_runtime_resume(struct device *dev)
1555 {
1556 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
1557 struct sdhci_pci_chip *chip;
1558 struct sdhci_pci_slot *slot;
1559 int i, ret;
1560
1561 chip = pci_get_drvdata(pdev);
1562 if (!chip)
1563 return 0;
1564
1565 if (chip->fixes && chip->fixes->resume) {
1566 ret = chip->fixes->resume(chip);
1567 if (ret)
1568 return ret;
1569 }
1570
1571 for (i = 0; i < chip->num_slots; i++) {
1572 slot = chip->slots[i];
1573 if (!slot)
1574 continue;
1575
1576 ret = sdhci_runtime_resume_host(slot->host);
1577 if (ret)
1578 return ret;
1579 }
1580
1581 return 0;
1582 }
1583
1584 #else /* CONFIG_PM */
1585
1586 #define sdhci_pci_suspend NULL
1587 #define sdhci_pci_resume NULL
1588
1589 #endif /* CONFIG_PM */
1590
1591 static const struct dev_pm_ops sdhci_pci_pm_ops = {
1592 .suspend = sdhci_pci_suspend,
1593 .resume = sdhci_pci_resume,
1594 SET_RUNTIME_PM_OPS(sdhci_pci_runtime_suspend,
1595 sdhci_pci_runtime_resume, NULL)
1596 };
1597
1598 /*****************************************************************************\
1599 * *
1600 * Device probing/removal *
1601 * *
1602 \*****************************************************************************/
1603
sdhci_pci_probe_slot(struct pci_dev * pdev,struct sdhci_pci_chip * chip,int first_bar,int slotno)1604 static struct sdhci_pci_slot *sdhci_pci_probe_slot(
1605 struct pci_dev *pdev, struct sdhci_pci_chip *chip, int first_bar,
1606 int slotno)
1607 {
1608 struct sdhci_pci_slot *slot;
1609 struct sdhci_host *host;
1610 int ret, bar = first_bar + slotno;
1611
1612 if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) {
1613 dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar);
1614 return ERR_PTR(-ENODEV);
1615 }
1616
1617 if (pci_resource_len(pdev, bar) < 0x100) {
1618 dev_err(&pdev->dev, "Invalid iomem size. You may "
1619 "experience problems.\n");
1620 }
1621
1622 if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) {
1623 dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n");
1624 return ERR_PTR(-ENODEV);
1625 }
1626
1627 if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) {
1628 dev_err(&pdev->dev, "Unknown interface. Aborting.\n");
1629 return ERR_PTR(-ENODEV);
1630 }
1631
1632 host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot));
1633 if (IS_ERR(host)) {
1634 dev_err(&pdev->dev, "cannot allocate host\n");
1635 return ERR_CAST(host);
1636 }
1637
1638 slot = sdhci_priv(host);
1639
1640 slot->chip = chip;
1641 slot->host = host;
1642 slot->pci_bar = bar;
1643 slot->rst_n_gpio = -EINVAL;
1644 slot->cd_gpio = -EINVAL;
1645 slot->cd_idx = -1;
1646
1647 /* Retrieve platform data if there is any */
1648 if (*sdhci_pci_get_data)
1649 slot->data = sdhci_pci_get_data(pdev, slotno);
1650
1651 if (slot->data) {
1652 if (slot->data->setup) {
1653 ret = slot->data->setup(slot->data);
1654 if (ret) {
1655 dev_err(&pdev->dev, "platform setup failed\n");
1656 goto free;
1657 }
1658 }
1659 slot->rst_n_gpio = slot->data->rst_n_gpio;
1660 slot->cd_gpio = slot->data->cd_gpio;
1661 }
1662
1663 host->hw_name = "PCI";
1664 host->ops = &sdhci_pci_ops;
1665 host->quirks = chip->quirks;
1666 host->quirks2 = chip->quirks2;
1667
1668 host->irq = pdev->irq;
1669
1670 ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc));
1671 if (ret) {
1672 dev_err(&pdev->dev, "cannot request region\n");
1673 goto cleanup;
1674 }
1675
1676 host->ioaddr = pci_ioremap_bar(pdev, bar);
1677 if (!host->ioaddr) {
1678 dev_err(&pdev->dev, "failed to remap registers\n");
1679 ret = -ENOMEM;
1680 goto release;
1681 }
1682
1683 if (chip->fixes && chip->fixes->probe_slot) {
1684 ret = chip->fixes->probe_slot(slot);
1685 if (ret)
1686 goto unmap;
1687 }
1688
1689 if (gpio_is_valid(slot->rst_n_gpio)) {
1690 if (!gpio_request(slot->rst_n_gpio, "eMMC_reset")) {
1691 gpio_direction_output(slot->rst_n_gpio, 1);
1692 slot->host->mmc->caps |= MMC_CAP_HW_RESET;
1693 slot->hw_reset = sdhci_pci_gpio_hw_reset;
1694 } else {
1695 dev_warn(&pdev->dev, "failed to request rst_n_gpio\n");
1696 slot->rst_n_gpio = -EINVAL;
1697 }
1698 }
1699
1700 host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
1701 host->mmc->slotno = slotno;
1702 host->mmc->caps2 |= MMC_CAP2_NO_PRESCAN_POWERUP;
1703
1704 if (slot->cd_idx >= 0 &&
1705 mmc_gpiod_request_cd(host->mmc, slot->cd_con_id, slot->cd_idx,
1706 slot->cd_override_level, 0, NULL)) {
1707 dev_warn(&pdev->dev, "failed to setup card detect gpio\n");
1708 slot->cd_idx = -1;
1709 }
1710
1711 ret = sdhci_add_host(host);
1712 if (ret)
1713 goto remove;
1714
1715 sdhci_pci_add_own_cd(slot);
1716
1717 /*
1718 * Check if the chip needs a separate GPIO for card detect to wake up
1719 * from runtime suspend. If it is not there, don't allow runtime PM.
1720 * Note sdhci_pci_add_own_cd() sets slot->cd_gpio to -EINVAL on failure.
1721 */
1722 if (chip->fixes && chip->fixes->own_cd_for_runtime_pm &&
1723 !gpio_is_valid(slot->cd_gpio) && slot->cd_idx < 0)
1724 chip->allow_runtime_pm = false;
1725
1726 return slot;
1727
1728 remove:
1729 if (gpio_is_valid(slot->rst_n_gpio))
1730 gpio_free(slot->rst_n_gpio);
1731
1732 if (chip->fixes && chip->fixes->remove_slot)
1733 chip->fixes->remove_slot(slot, 0);
1734
1735 unmap:
1736 iounmap(host->ioaddr);
1737
1738 release:
1739 pci_release_region(pdev, bar);
1740
1741 cleanup:
1742 if (slot->data && slot->data->cleanup)
1743 slot->data->cleanup(slot->data);
1744
1745 free:
1746 sdhci_free_host(host);
1747
1748 return ERR_PTR(ret);
1749 }
1750
sdhci_pci_remove_slot(struct sdhci_pci_slot * slot)1751 static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot)
1752 {
1753 int dead;
1754 u32 scratch;
1755
1756 sdhci_pci_remove_own_cd(slot);
1757
1758 dead = 0;
1759 scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS);
1760 if (scratch == (u32)-1)
1761 dead = 1;
1762
1763 sdhci_remove_host(slot->host, dead);
1764
1765 if (gpio_is_valid(slot->rst_n_gpio))
1766 gpio_free(slot->rst_n_gpio);
1767
1768 if (slot->chip->fixes && slot->chip->fixes->remove_slot)
1769 slot->chip->fixes->remove_slot(slot, dead);
1770
1771 if (slot->data && slot->data->cleanup)
1772 slot->data->cleanup(slot->data);
1773
1774 pci_release_region(slot->chip->pdev, slot->pci_bar);
1775
1776 sdhci_free_host(slot->host);
1777 }
1778
sdhci_pci_runtime_pm_allow(struct device * dev)1779 static void sdhci_pci_runtime_pm_allow(struct device *dev)
1780 {
1781 pm_runtime_put_noidle(dev);
1782 pm_runtime_allow(dev);
1783 pm_runtime_set_autosuspend_delay(dev, 50);
1784 pm_runtime_use_autosuspend(dev);
1785 pm_suspend_ignore_children(dev, 1);
1786 }
1787
sdhci_pci_runtime_pm_forbid(struct device * dev)1788 static void sdhci_pci_runtime_pm_forbid(struct device *dev)
1789 {
1790 pm_runtime_forbid(dev);
1791 pm_runtime_get_noresume(dev);
1792 }
1793
sdhci_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)1794 static int sdhci_pci_probe(struct pci_dev *pdev,
1795 const struct pci_device_id *ent)
1796 {
1797 struct sdhci_pci_chip *chip;
1798 struct sdhci_pci_slot *slot;
1799
1800 u8 slots, first_bar;
1801 int ret, i;
1802
1803 BUG_ON(pdev == NULL);
1804 BUG_ON(ent == NULL);
1805
1806 dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n",
1807 (int)pdev->vendor, (int)pdev->device, (int)pdev->revision);
1808
1809 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots);
1810 if (ret)
1811 return ret;
1812
1813 slots = PCI_SLOT_INFO_SLOTS(slots) + 1;
1814 dev_dbg(&pdev->dev, "found %d slot(s)\n", slots);
1815 if (slots == 0)
1816 return -ENODEV;
1817
1818 BUG_ON(slots > MAX_SLOTS);
1819
1820 ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar);
1821 if (ret)
1822 return ret;
1823
1824 first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK;
1825
1826 if (first_bar > 5) {
1827 dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n");
1828 return -ENODEV;
1829 }
1830
1831 ret = pci_enable_device(pdev);
1832 if (ret)
1833 return ret;
1834
1835 chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL);
1836 if (!chip) {
1837 ret = -ENOMEM;
1838 goto err;
1839 }
1840
1841 chip->pdev = pdev;
1842 chip->fixes = (const struct sdhci_pci_fixes *)ent->driver_data;
1843 if (chip->fixes) {
1844 chip->quirks = chip->fixes->quirks;
1845 chip->quirks2 = chip->fixes->quirks2;
1846 chip->allow_runtime_pm = chip->fixes->allow_runtime_pm;
1847 }
1848 chip->num_slots = slots;
1849
1850 pci_set_drvdata(pdev, chip);
1851
1852 if (chip->fixes && chip->fixes->probe) {
1853 ret = chip->fixes->probe(chip);
1854 if (ret)
1855 goto free;
1856 }
1857
1858 slots = chip->num_slots; /* Quirk may have changed this */
1859
1860 for (i = 0; i < slots; i++) {
1861 slot = sdhci_pci_probe_slot(pdev, chip, first_bar, i);
1862 if (IS_ERR(slot)) {
1863 for (i--; i >= 0; i--)
1864 sdhci_pci_remove_slot(chip->slots[i]);
1865 ret = PTR_ERR(slot);
1866 goto free;
1867 }
1868
1869 chip->slots[i] = slot;
1870 }
1871
1872 if (chip->allow_runtime_pm)
1873 sdhci_pci_runtime_pm_allow(&pdev->dev);
1874
1875 return 0;
1876
1877 free:
1878 pci_set_drvdata(pdev, NULL);
1879 kfree(chip);
1880
1881 err:
1882 pci_disable_device(pdev);
1883 return ret;
1884 }
1885
sdhci_pci_remove(struct pci_dev * pdev)1886 static void sdhci_pci_remove(struct pci_dev *pdev)
1887 {
1888 int i;
1889 struct sdhci_pci_chip *chip;
1890
1891 chip = pci_get_drvdata(pdev);
1892
1893 if (chip) {
1894 if (chip->allow_runtime_pm)
1895 sdhci_pci_runtime_pm_forbid(&pdev->dev);
1896
1897 for (i = 0; i < chip->num_slots; i++)
1898 sdhci_pci_remove_slot(chip->slots[i]);
1899
1900 pci_set_drvdata(pdev, NULL);
1901 kfree(chip);
1902 }
1903
1904 pci_disable_device(pdev);
1905 }
1906
1907 static struct pci_driver sdhci_driver = {
1908 .name = "sdhci-pci",
1909 .id_table = pci_ids,
1910 .probe = sdhci_pci_probe,
1911 .remove = sdhci_pci_remove,
1912 .driver = {
1913 .pm = &sdhci_pci_pm_ops
1914 },
1915 };
1916
1917 module_pci_driver(sdhci_driver);
1918
1919 MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>");
1920 MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver");
1921 MODULE_LICENSE("GPL");
1922