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b8c86fc5 PO |
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/pci.h> | |
18 | #include <linux/dma-mapping.h> | |
19 | ||
20 | #include <linux/mmc/host.h> | |
21 | ||
22 | #include <asm/scatterlist.h> | |
23 | #include <asm/io.h> | |
24 | ||
25 | #include "sdhci.h" | |
26 | ||
27 | /* | |
28 | * PCI registers | |
29 | */ | |
30 | ||
31 | #define PCI_SDHCI_IFPIO 0x00 | |
32 | #define PCI_SDHCI_IFDMA 0x01 | |
33 | #define PCI_SDHCI_IFVENDOR 0x02 | |
34 | ||
35 | #define PCI_SLOT_INFO 0x40 /* 8 bits */ | |
36 | #define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7) | |
37 | #define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07 | |
38 | ||
39 | #define MAX_SLOTS 8 | |
40 | ||
22606405 | 41 | struct sdhci_pci_chip; |
4489428a | 42 | struct sdhci_pci_slot; |
22606405 PO |
43 | |
44 | struct sdhci_pci_fixes { | |
45 | unsigned int quirks; | |
46 | ||
47 | int (*probe)(struct sdhci_pci_chip*); | |
45211e21 | 48 | |
4489428a | 49 | int (*probe_slot)(struct sdhci_pci_slot*); |
1e72859e | 50 | void (*remove_slot)(struct sdhci_pci_slot*, int); |
4489428a PO |
51 | |
52 | int (*suspend)(struct sdhci_pci_chip*, | |
53 | pm_message_t); | |
45211e21 | 54 | int (*resume)(struct sdhci_pci_chip*); |
22606405 PO |
55 | }; |
56 | ||
57 | struct sdhci_pci_slot { | |
58 | struct sdhci_pci_chip *chip; | |
59 | struct sdhci_host *host; | |
b8c86fc5 | 60 | |
22606405 PO |
61 | int pci_bar; |
62 | }; | |
63 | ||
64 | struct sdhci_pci_chip { | |
65 | struct pci_dev *pdev; | |
66 | ||
67 | unsigned int quirks; | |
68 | const struct sdhci_pci_fixes *fixes; | |
69 | ||
70 | int num_slots; /* Slots on controller */ | |
71 | struct sdhci_pci_slot *slots[MAX_SLOTS]; /* Pointers to host slots */ | |
72 | }; | |
73 | ||
74 | ||
75 | /*****************************************************************************\ | |
76 | * * | |
77 | * Hardware specific quirk handling * | |
78 | * * | |
79 | \*****************************************************************************/ | |
80 | ||
81 | static int ricoh_probe(struct sdhci_pci_chip *chip) | |
82 | { | |
83 | if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_IBM) | |
84 | chip->quirks |= SDHCI_QUIRK_CLOCK_BEFORE_RESET; | |
85 | ||
c99436fb CB |
86 | if (chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG || |
87 | chip->pdev->subsystem_vendor == PCI_VENDOR_ID_SONY) | |
22606405 PO |
88 | chip->quirks |= SDHCI_QUIRK_NO_CARD_NO_RESET; |
89 | ||
90 | return 0; | |
91 | } | |
92 | ||
93 | static const struct sdhci_pci_fixes sdhci_ricoh = { | |
94 | .probe = ricoh_probe, | |
309d9736 | 95 | .quirks = SDHCI_QUIRK_32BIT_DMA_ADDR, |
22606405 PO |
96 | }; |
97 | ||
98 | static const struct sdhci_pci_fixes sdhci_ene_712 = { | |
99 | .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | | |
100 | SDHCI_QUIRK_BROKEN_DMA, | |
101 | }; | |
102 | ||
103 | static const struct sdhci_pci_fixes sdhci_ene_714 = { | |
104 | .quirks = SDHCI_QUIRK_SINGLE_POWER_WRITE | | |
105 | SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS | | |
106 | SDHCI_QUIRK_BROKEN_DMA, | |
107 | }; | |
108 | ||
109 | static const struct sdhci_pci_fixes sdhci_cafe = { | |
110 | .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER | | |
a0874897 | 111 | SDHCI_QUIRK_NO_BUSY_IRQ | |
ee53ab5d | 112 | SDHCI_QUIRK_BROKEN_TIMEOUT_VAL, |
22606405 PO |
113 | }; |
114 | ||
45211e21 PO |
115 | static int jmicron_pmos(struct sdhci_pci_chip *chip, int on) |
116 | { | |
117 | u8 scratch; | |
118 | int ret; | |
119 | ||
120 | ret = pci_read_config_byte(chip->pdev, 0xAE, &scratch); | |
121 | if (ret) | |
122 | return ret; | |
123 | ||
124 | /* | |
125 | * Turn PMOS on [bit 0], set over current detection to 2.4 V | |
126 | * [bit 1:2] and enable over current debouncing [bit 6]. | |
127 | */ | |
128 | if (on) | |
129 | scratch |= 0x47; | |
130 | else | |
131 | scratch &= ~0x47; | |
132 | ||
133 | ret = pci_write_config_byte(chip->pdev, 0xAE, scratch); | |
134 | if (ret) | |
135 | return ret; | |
136 | ||
137 | return 0; | |
138 | } | |
139 | ||
140 | static int jmicron_probe(struct sdhci_pci_chip *chip) | |
141 | { | |
142 | int ret; | |
143 | ||
93fc48c7 PO |
144 | if (chip->pdev->revision == 0) { |
145 | chip->quirks |= SDHCI_QUIRK_32BIT_DMA_ADDR | | |
146 | SDHCI_QUIRK_32BIT_DMA_SIZE | | |
2134a922 | 147 | SDHCI_QUIRK_32BIT_ADMA_SIZE | |
4a3cba32 | 148 | SDHCI_QUIRK_RESET_AFTER_REQUEST | |
86a6a874 | 149 | SDHCI_QUIRK_BROKEN_SMALL_PIO; |
93fc48c7 PO |
150 | } |
151 | ||
4489428a PO |
152 | /* |
153 | * JMicron chips can have two interfaces to the same hardware | |
154 | * in order to work around limitations in Microsoft's driver. | |
155 | * We need to make sure we only bind to one of them. | |
156 | * | |
157 | * This code assumes two things: | |
158 | * | |
159 | * 1. The PCI code adds subfunctions in order. | |
160 | * | |
161 | * 2. The MMC interface has a lower subfunction number | |
162 | * than the SD interface. | |
163 | */ | |
164 | if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_SD) { | |
165 | struct pci_dev *sd_dev; | |
166 | ||
167 | sd_dev = NULL; | |
168 | while ((sd_dev = pci_get_device(PCI_VENDOR_ID_JMICRON, | |
169 | PCI_DEVICE_ID_JMICRON_JMB38X_MMC, sd_dev)) != NULL) { | |
170 | if ((PCI_SLOT(chip->pdev->devfn) == | |
171 | PCI_SLOT(sd_dev->devfn)) && | |
172 | (chip->pdev->bus == sd_dev->bus)) | |
173 | break; | |
174 | } | |
175 | ||
176 | if (sd_dev) { | |
177 | pci_dev_put(sd_dev); | |
178 | dev_info(&chip->pdev->dev, "Refusing to bind to " | |
179 | "secondary interface.\n"); | |
180 | return -ENODEV; | |
181 | } | |
182 | } | |
183 | ||
45211e21 PO |
184 | /* |
185 | * JMicron chips need a bit of a nudge to enable the power | |
186 | * output pins. | |
187 | */ | |
188 | ret = jmicron_pmos(chip, 1); | |
189 | if (ret) { | |
190 | dev_err(&chip->pdev->dev, "Failure enabling card power\n"); | |
191 | return ret; | |
192 | } | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
4489428a PO |
197 | static void jmicron_enable_mmc(struct sdhci_host *host, int on) |
198 | { | |
199 | u8 scratch; | |
200 | ||
201 | scratch = readb(host->ioaddr + 0xC0); | |
202 | ||
203 | if (on) | |
204 | scratch |= 0x01; | |
205 | else | |
206 | scratch &= ~0x01; | |
207 | ||
208 | writeb(scratch, host->ioaddr + 0xC0); | |
209 | } | |
210 | ||
211 | static int jmicron_probe_slot(struct sdhci_pci_slot *slot) | |
212 | { | |
2134a922 PO |
213 | if (slot->chip->pdev->revision == 0) { |
214 | u16 version; | |
215 | ||
216 | version = readl(slot->host->ioaddr + SDHCI_HOST_VERSION); | |
217 | version = (version & SDHCI_VENDOR_VER_MASK) >> | |
218 | SDHCI_VENDOR_VER_SHIFT; | |
219 | ||
220 | /* | |
221 | * Older versions of the chip have lots of nasty glitches | |
222 | * in the ADMA engine. It's best just to avoid it | |
223 | * completely. | |
224 | */ | |
225 | if (version < 0xAC) | |
226 | slot->host->quirks |= SDHCI_QUIRK_BROKEN_ADMA; | |
227 | } | |
228 | ||
4489428a PO |
229 | /* |
230 | * The secondary interface requires a bit set to get the | |
231 | * interrupts. | |
232 | */ | |
233 | if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) | |
234 | jmicron_enable_mmc(slot->host, 1); | |
235 | ||
236 | return 0; | |
237 | } | |
238 | ||
1e72859e | 239 | static void jmicron_remove_slot(struct sdhci_pci_slot *slot, int dead) |
4489428a | 240 | { |
1e72859e PO |
241 | if (dead) |
242 | return; | |
243 | ||
4489428a PO |
244 | if (slot->chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) |
245 | jmicron_enable_mmc(slot->host, 0); | |
246 | } | |
247 | ||
248 | static int jmicron_suspend(struct sdhci_pci_chip *chip, pm_message_t state) | |
249 | { | |
250 | int i; | |
251 | ||
252 | if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) { | |
253 | for (i = 0;i < chip->num_slots;i++) | |
254 | jmicron_enable_mmc(chip->slots[i]->host, 0); | |
255 | } | |
256 | ||
257 | return 0; | |
258 | } | |
259 | ||
45211e21 PO |
260 | static int jmicron_resume(struct sdhci_pci_chip *chip) |
261 | { | |
4489428a PO |
262 | int ret, i; |
263 | ||
264 | if (chip->pdev->device == PCI_DEVICE_ID_JMICRON_JMB38X_MMC) { | |
265 | for (i = 0;i < chip->num_slots;i++) | |
266 | jmicron_enable_mmc(chip->slots[i]->host, 1); | |
267 | } | |
45211e21 PO |
268 | |
269 | ret = jmicron_pmos(chip, 1); | |
270 | if (ret) { | |
271 | dev_err(&chip->pdev->dev, "Failure enabling card power\n"); | |
272 | return ret; | |
273 | } | |
274 | ||
275 | return 0; | |
276 | } | |
277 | ||
22606405 | 278 | static const struct sdhci_pci_fixes sdhci_jmicron = { |
45211e21 PO |
279 | .probe = jmicron_probe, |
280 | ||
4489428a PO |
281 | .probe_slot = jmicron_probe_slot, |
282 | .remove_slot = jmicron_remove_slot, | |
283 | ||
284 | .suspend = jmicron_suspend, | |
45211e21 | 285 | .resume = jmicron_resume, |
22606405 PO |
286 | }; |
287 | ||
a7a6186c NP |
288 | /* SysKonnect CardBus2SDIO extra registers */ |
289 | #define SYSKT_CTRL 0x200 | |
290 | #define SYSKT_RDFIFO_STAT 0x204 | |
291 | #define SYSKT_WRFIFO_STAT 0x208 | |
292 | #define SYSKT_POWER_DATA 0x20c | |
293 | #define SYSKT_POWER_330 0xef | |
294 | #define SYSKT_POWER_300 0xf8 | |
295 | #define SYSKT_POWER_184 0xcc | |
296 | #define SYSKT_POWER_CMD 0x20d | |
297 | #define SYSKT_POWER_START (1 << 7) | |
298 | #define SYSKT_POWER_STATUS 0x20e | |
299 | #define SYSKT_POWER_STATUS_OK (1 << 0) | |
300 | #define SYSKT_BOARD_REV 0x210 | |
301 | #define SYSKT_CHIP_REV 0x211 | |
302 | #define SYSKT_CONF_DATA 0x212 | |
303 | #define SYSKT_CONF_DATA_1V8 (1 << 2) | |
304 | #define SYSKT_CONF_DATA_2V5 (1 << 1) | |
305 | #define SYSKT_CONF_DATA_3V3 (1 << 0) | |
306 | ||
307 | static int syskt_probe(struct sdhci_pci_chip *chip) | |
308 | { | |
309 | if ((chip->pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { | |
310 | chip->pdev->class &= ~0x0000FF; | |
311 | chip->pdev->class |= PCI_SDHCI_IFDMA; | |
312 | } | |
313 | return 0; | |
314 | } | |
315 | ||
316 | static int syskt_probe_slot(struct sdhci_pci_slot *slot) | |
317 | { | |
318 | int tm, ps; | |
319 | ||
320 | u8 board_rev = readb(slot->host->ioaddr + SYSKT_BOARD_REV); | |
321 | u8 chip_rev = readb(slot->host->ioaddr + SYSKT_CHIP_REV); | |
322 | dev_info(&slot->chip->pdev->dev, "SysKonnect CardBus2SDIO, " | |
323 | "board rev %d.%d, chip rev %d.%d\n", | |
324 | board_rev >> 4, board_rev & 0xf, | |
325 | chip_rev >> 4, chip_rev & 0xf); | |
326 | if (chip_rev >= 0x20) | |
327 | slot->host->quirks |= SDHCI_QUIRK_FORCE_DMA; | |
328 | ||
329 | writeb(SYSKT_POWER_330, slot->host->ioaddr + SYSKT_POWER_DATA); | |
330 | writeb(SYSKT_POWER_START, slot->host->ioaddr + SYSKT_POWER_CMD); | |
331 | udelay(50); | |
332 | tm = 10; /* Wait max 1 ms */ | |
333 | do { | |
334 | ps = readw(slot->host->ioaddr + SYSKT_POWER_STATUS); | |
335 | if (ps & SYSKT_POWER_STATUS_OK) | |
336 | break; | |
337 | udelay(100); | |
338 | } while (--tm); | |
339 | if (!tm) { | |
340 | dev_err(&slot->chip->pdev->dev, | |
341 | "power regulator never stabilized"); | |
342 | writeb(0, slot->host->ioaddr + SYSKT_POWER_CMD); | |
343 | return -ENODEV; | |
344 | } | |
345 | ||
346 | return 0; | |
347 | } | |
348 | ||
349 | static const struct sdhci_pci_fixes sdhci_syskt = { | |
350 | .quirks = SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER, | |
351 | .probe = syskt_probe, | |
352 | .probe_slot = syskt_probe_slot, | |
353 | }; | |
354 | ||
557b0697 HW |
355 | static int via_probe(struct sdhci_pci_chip *chip) |
356 | { | |
357 | if (chip->pdev->revision == 0x10) | |
358 | chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER; | |
359 | ||
360 | return 0; | |
361 | } | |
362 | ||
363 | static const struct sdhci_pci_fixes sdhci_via = { | |
364 | .probe = via_probe, | |
365 | }; | |
366 | ||
22606405 | 367 | static const struct pci_device_id pci_ids[] __devinitdata = { |
b8c86fc5 PO |
368 | { |
369 | .vendor = PCI_VENDOR_ID_RICOH, | |
370 | .device = PCI_DEVICE_ID_RICOH_R5C822, | |
22606405 | 371 | .subvendor = PCI_ANY_ID, |
b8c86fc5 | 372 | .subdevice = PCI_ANY_ID, |
22606405 | 373 | .driver_data = (kernel_ulong_t)&sdhci_ricoh, |
b8c86fc5 PO |
374 | }, |
375 | ||
376 | { | |
377 | .vendor = PCI_VENDOR_ID_ENE, | |
378 | .device = PCI_DEVICE_ID_ENE_CB712_SD, | |
379 | .subvendor = PCI_ANY_ID, | |
380 | .subdevice = PCI_ANY_ID, | |
22606405 | 381 | .driver_data = (kernel_ulong_t)&sdhci_ene_712, |
b8c86fc5 PO |
382 | }, |
383 | ||
384 | { | |
385 | .vendor = PCI_VENDOR_ID_ENE, | |
386 | .device = PCI_DEVICE_ID_ENE_CB712_SD_2, | |
387 | .subvendor = PCI_ANY_ID, | |
388 | .subdevice = PCI_ANY_ID, | |
22606405 | 389 | .driver_data = (kernel_ulong_t)&sdhci_ene_712, |
b8c86fc5 PO |
390 | }, |
391 | ||
392 | { | |
393 | .vendor = PCI_VENDOR_ID_ENE, | |
394 | .device = PCI_DEVICE_ID_ENE_CB714_SD, | |
395 | .subvendor = PCI_ANY_ID, | |
396 | .subdevice = PCI_ANY_ID, | |
22606405 | 397 | .driver_data = (kernel_ulong_t)&sdhci_ene_714, |
b8c86fc5 PO |
398 | }, |
399 | ||
400 | { | |
401 | .vendor = PCI_VENDOR_ID_ENE, | |
402 | .device = PCI_DEVICE_ID_ENE_CB714_SD_2, | |
403 | .subvendor = PCI_ANY_ID, | |
404 | .subdevice = PCI_ANY_ID, | |
22606405 | 405 | .driver_data = (kernel_ulong_t)&sdhci_ene_714, |
b8c86fc5 PO |
406 | }, |
407 | ||
408 | { | |
409 | .vendor = PCI_VENDOR_ID_MARVELL, | |
8c5eb880 | 410 | .device = PCI_DEVICE_ID_MARVELL_88ALP01_SD, |
b8c86fc5 PO |
411 | .subvendor = PCI_ANY_ID, |
412 | .subdevice = PCI_ANY_ID, | |
22606405 | 413 | .driver_data = (kernel_ulong_t)&sdhci_cafe, |
b8c86fc5 PO |
414 | }, |
415 | ||
416 | { | |
417 | .vendor = PCI_VENDOR_ID_JMICRON, | |
418 | .device = PCI_DEVICE_ID_JMICRON_JMB38X_SD, | |
419 | .subvendor = PCI_ANY_ID, | |
420 | .subdevice = PCI_ANY_ID, | |
22606405 | 421 | .driver_data = (kernel_ulong_t)&sdhci_jmicron, |
b8c86fc5 PO |
422 | }, |
423 | ||
4489428a PO |
424 | { |
425 | .vendor = PCI_VENDOR_ID_JMICRON, | |
426 | .device = PCI_DEVICE_ID_JMICRON_JMB38X_MMC, | |
427 | .subvendor = PCI_ANY_ID, | |
428 | .subdevice = PCI_ANY_ID, | |
429 | .driver_data = (kernel_ulong_t)&sdhci_jmicron, | |
430 | }, | |
431 | ||
a7a6186c NP |
432 | { |
433 | .vendor = PCI_VENDOR_ID_SYSKONNECT, | |
434 | .device = 0x8000, | |
435 | .subvendor = PCI_ANY_ID, | |
436 | .subdevice = PCI_ANY_ID, | |
437 | .driver_data = (kernel_ulong_t)&sdhci_syskt, | |
438 | }, | |
439 | ||
557b0697 HW |
440 | { |
441 | .vendor = PCI_VENDOR_ID_VIA, | |
442 | .device = 0x95d0, | |
443 | .subvendor = PCI_ANY_ID, | |
444 | .subdevice = PCI_ANY_ID, | |
445 | .driver_data = (kernel_ulong_t)&sdhci_via, | |
446 | }, | |
447 | ||
b8c86fc5 PO |
448 | { /* Generic SD host controller */ |
449 | PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00) | |
450 | }, | |
451 | ||
452 | { /* end: all zeroes */ }, | |
453 | }; | |
454 | ||
455 | MODULE_DEVICE_TABLE(pci, pci_ids); | |
456 | ||
b8c86fc5 PO |
457 | /*****************************************************************************\ |
458 | * * | |
459 | * SDHCI core callbacks * | |
460 | * * | |
461 | \*****************************************************************************/ | |
462 | ||
463 | static int sdhci_pci_enable_dma(struct sdhci_host *host) | |
464 | { | |
465 | struct sdhci_pci_slot *slot; | |
466 | struct pci_dev *pdev; | |
467 | int ret; | |
468 | ||
469 | slot = sdhci_priv(host); | |
470 | pdev = slot->chip->pdev; | |
471 | ||
472 | if (((pdev->class & 0xFFFF00) == (PCI_CLASS_SYSTEM_SDHCI << 8)) && | |
473 | ((pdev->class & 0x0000FF) != PCI_SDHCI_IFDMA) && | |
a13abc7b | 474 | (host->flags & SDHCI_USE_SDMA)) { |
b8c86fc5 PO |
475 | dev_warn(&pdev->dev, "Will use DMA mode even though HW " |
476 | "doesn't fully claim to support it.\n"); | |
477 | } | |
478 | ||
284901a9 | 479 | ret = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
b8c86fc5 PO |
480 | if (ret) |
481 | return ret; | |
482 | ||
483 | pci_set_master(pdev); | |
484 | ||
485 | return 0; | |
486 | } | |
487 | ||
488 | static struct sdhci_ops sdhci_pci_ops = { | |
489 | .enable_dma = sdhci_pci_enable_dma, | |
490 | }; | |
491 | ||
492 | /*****************************************************************************\ | |
493 | * * | |
494 | * Suspend/resume * | |
495 | * * | |
496 | \*****************************************************************************/ | |
497 | ||
498 | #ifdef CONFIG_PM | |
499 | ||
500 | static int sdhci_pci_suspend (struct pci_dev *pdev, pm_message_t state) | |
501 | { | |
502 | struct sdhci_pci_chip *chip; | |
503 | struct sdhci_pci_slot *slot; | |
504 | int i, ret; | |
505 | ||
506 | chip = pci_get_drvdata(pdev); | |
507 | if (!chip) | |
508 | return 0; | |
509 | ||
510 | for (i = 0;i < chip->num_slots;i++) { | |
511 | slot = chip->slots[i]; | |
512 | if (!slot) | |
513 | continue; | |
514 | ||
515 | ret = sdhci_suspend_host(slot->host, state); | |
516 | ||
517 | if (ret) { | |
518 | for (i--;i >= 0;i--) | |
519 | sdhci_resume_host(chip->slots[i]->host); | |
520 | return ret; | |
521 | } | |
522 | } | |
523 | ||
4489428a PO |
524 | if (chip->fixes && chip->fixes->suspend) { |
525 | ret = chip->fixes->suspend(chip, state); | |
526 | if (ret) { | |
527 | for (i = chip->num_slots - 1;i >= 0;i--) | |
528 | sdhci_resume_host(chip->slots[i]->host); | |
529 | return ret; | |
530 | } | |
531 | } | |
532 | ||
b8c86fc5 PO |
533 | pci_save_state(pdev); |
534 | pci_enable_wake(pdev, pci_choose_state(pdev, state), 0); | |
535 | pci_disable_device(pdev); | |
536 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
541 | static int sdhci_pci_resume (struct pci_dev *pdev) | |
542 | { | |
543 | struct sdhci_pci_chip *chip; | |
544 | struct sdhci_pci_slot *slot; | |
545 | int i, ret; | |
546 | ||
547 | chip = pci_get_drvdata(pdev); | |
548 | if (!chip) | |
549 | return 0; | |
550 | ||
551 | pci_set_power_state(pdev, PCI_D0); | |
552 | pci_restore_state(pdev); | |
553 | ret = pci_enable_device(pdev); | |
554 | if (ret) | |
555 | return ret; | |
556 | ||
45211e21 PO |
557 | if (chip->fixes && chip->fixes->resume) { |
558 | ret = chip->fixes->resume(chip); | |
559 | if (ret) | |
560 | return ret; | |
561 | } | |
562 | ||
b8c86fc5 PO |
563 | for (i = 0;i < chip->num_slots;i++) { |
564 | slot = chip->slots[i]; | |
565 | if (!slot) | |
566 | continue; | |
567 | ||
568 | ret = sdhci_resume_host(slot->host); | |
569 | if (ret) | |
570 | return ret; | |
571 | } | |
572 | ||
573 | return 0; | |
574 | } | |
575 | ||
576 | #else /* CONFIG_PM */ | |
577 | ||
578 | #define sdhci_pci_suspend NULL | |
579 | #define sdhci_pci_resume NULL | |
580 | ||
581 | #endif /* CONFIG_PM */ | |
582 | ||
583 | /*****************************************************************************\ | |
584 | * * | |
585 | * Device probing/removal * | |
586 | * * | |
587 | \*****************************************************************************/ | |
588 | ||
589 | static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot( | |
590 | struct pci_dev *pdev, struct sdhci_pci_chip *chip, int bar) | |
591 | { | |
592 | struct sdhci_pci_slot *slot; | |
593 | struct sdhci_host *host; | |
594 | ||
595 | resource_size_t addr; | |
596 | ||
597 | int ret; | |
598 | ||
599 | if (!(pci_resource_flags(pdev, bar) & IORESOURCE_MEM)) { | |
600 | dev_err(&pdev->dev, "BAR %d is not iomem. Aborting.\n", bar); | |
601 | return ERR_PTR(-ENODEV); | |
602 | } | |
603 | ||
604 | if (pci_resource_len(pdev, bar) != 0x100) { | |
605 | dev_err(&pdev->dev, "Invalid iomem size. You may " | |
606 | "experience problems.\n"); | |
607 | } | |
608 | ||
609 | if ((pdev->class & 0x0000FF) == PCI_SDHCI_IFVENDOR) { | |
610 | dev_err(&pdev->dev, "Vendor specific interface. Aborting.\n"); | |
611 | return ERR_PTR(-ENODEV); | |
612 | } | |
613 | ||
614 | if ((pdev->class & 0x0000FF) > PCI_SDHCI_IFVENDOR) { | |
615 | dev_err(&pdev->dev, "Unknown interface. Aborting.\n"); | |
616 | return ERR_PTR(-ENODEV); | |
617 | } | |
618 | ||
619 | host = sdhci_alloc_host(&pdev->dev, sizeof(struct sdhci_pci_slot)); | |
620 | if (IS_ERR(host)) { | |
c60a32cd DC |
621 | dev_err(&pdev->dev, "cannot allocate host\n"); |
622 | return ERR_PTR(PTR_ERR(host)); | |
b8c86fc5 PO |
623 | } |
624 | ||
625 | slot = sdhci_priv(host); | |
626 | ||
627 | slot->chip = chip; | |
628 | slot->host = host; | |
629 | slot->pci_bar = bar; | |
630 | ||
631 | host->hw_name = "PCI"; | |
632 | host->ops = &sdhci_pci_ops; | |
633 | host->quirks = chip->quirks; | |
634 | ||
635 | host->irq = pdev->irq; | |
636 | ||
637 | ret = pci_request_region(pdev, bar, mmc_hostname(host->mmc)); | |
638 | if (ret) { | |
639 | dev_err(&pdev->dev, "cannot request region\n"); | |
c60a32cd | 640 | goto free; |
b8c86fc5 PO |
641 | } |
642 | ||
643 | addr = pci_resource_start(pdev, bar); | |
092f82ed | 644 | host->ioaddr = pci_ioremap_bar(pdev, bar); |
b8c86fc5 PO |
645 | if (!host->ioaddr) { |
646 | dev_err(&pdev->dev, "failed to remap registers\n"); | |
647 | goto release; | |
648 | } | |
649 | ||
4489428a PO |
650 | if (chip->fixes && chip->fixes->probe_slot) { |
651 | ret = chip->fixes->probe_slot(slot); | |
652 | if (ret) | |
653 | goto unmap; | |
654 | } | |
655 | ||
b8c86fc5 PO |
656 | ret = sdhci_add_host(host); |
657 | if (ret) | |
4489428a | 658 | goto remove; |
b8c86fc5 PO |
659 | |
660 | return slot; | |
661 | ||
4489428a PO |
662 | remove: |
663 | if (chip->fixes && chip->fixes->remove_slot) | |
1e72859e | 664 | chip->fixes->remove_slot(slot, 0); |
4489428a | 665 | |
b8c86fc5 PO |
666 | unmap: |
667 | iounmap(host->ioaddr); | |
668 | ||
669 | release: | |
670 | pci_release_region(pdev, bar); | |
c60a32cd DC |
671 | |
672 | free: | |
b8c86fc5 PO |
673 | sdhci_free_host(host); |
674 | ||
675 | return ERR_PTR(ret); | |
676 | } | |
677 | ||
678 | static void sdhci_pci_remove_slot(struct sdhci_pci_slot *slot) | |
679 | { | |
1e72859e PO |
680 | int dead; |
681 | u32 scratch; | |
682 | ||
683 | dead = 0; | |
684 | scratch = readl(slot->host->ioaddr + SDHCI_INT_STATUS); | |
685 | if (scratch == (u32)-1) | |
686 | dead = 1; | |
687 | ||
688 | sdhci_remove_host(slot->host, dead); | |
4489428a PO |
689 | |
690 | if (slot->chip->fixes && slot->chip->fixes->remove_slot) | |
1e72859e | 691 | slot->chip->fixes->remove_slot(slot, dead); |
4489428a | 692 | |
b8c86fc5 | 693 | pci_release_region(slot->chip->pdev, slot->pci_bar); |
4489428a | 694 | |
b8c86fc5 PO |
695 | sdhci_free_host(slot->host); |
696 | } | |
697 | ||
698 | static int __devinit sdhci_pci_probe(struct pci_dev *pdev, | |
699 | const struct pci_device_id *ent) | |
700 | { | |
701 | struct sdhci_pci_chip *chip; | |
702 | struct sdhci_pci_slot *slot; | |
703 | ||
704 | u8 slots, rev, first_bar; | |
705 | int ret, i; | |
706 | ||
707 | BUG_ON(pdev == NULL); | |
708 | BUG_ON(ent == NULL); | |
709 | ||
710 | pci_read_config_byte(pdev, PCI_CLASS_REVISION, &rev); | |
711 | ||
712 | dev_info(&pdev->dev, "SDHCI controller found [%04x:%04x] (rev %x)\n", | |
713 | (int)pdev->vendor, (int)pdev->device, (int)rev); | |
714 | ||
715 | ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &slots); | |
716 | if (ret) | |
717 | return ret; | |
718 | ||
719 | slots = PCI_SLOT_INFO_SLOTS(slots) + 1; | |
720 | dev_dbg(&pdev->dev, "found %d slot(s)\n", slots); | |
721 | if (slots == 0) | |
722 | return -ENODEV; | |
723 | ||
724 | BUG_ON(slots > MAX_SLOTS); | |
725 | ||
726 | ret = pci_read_config_byte(pdev, PCI_SLOT_INFO, &first_bar); | |
727 | if (ret) | |
728 | return ret; | |
729 | ||
730 | first_bar &= PCI_SLOT_INFO_FIRST_BAR_MASK; | |
731 | ||
732 | if (first_bar > 5) { | |
733 | dev_err(&pdev->dev, "Invalid first BAR. Aborting.\n"); | |
734 | return -ENODEV; | |
735 | } | |
736 | ||
737 | ret = pci_enable_device(pdev); | |
738 | if (ret) | |
739 | return ret; | |
740 | ||
741 | chip = kzalloc(sizeof(struct sdhci_pci_chip), GFP_KERNEL); | |
742 | if (!chip) { | |
743 | ret = -ENOMEM; | |
744 | goto err; | |
745 | } | |
746 | ||
747 | chip->pdev = pdev; | |
22606405 PO |
748 | chip->fixes = (const struct sdhci_pci_fixes*)ent->driver_data; |
749 | if (chip->fixes) | |
750 | chip->quirks = chip->fixes->quirks; | |
b8c86fc5 PO |
751 | chip->num_slots = slots; |
752 | ||
753 | pci_set_drvdata(pdev, chip); | |
754 | ||
22606405 PO |
755 | if (chip->fixes && chip->fixes->probe) { |
756 | ret = chip->fixes->probe(chip); | |
757 | if (ret) | |
758 | goto free; | |
759 | } | |
760 | ||
b8c86fc5 PO |
761 | for (i = 0;i < slots;i++) { |
762 | slot = sdhci_pci_probe_slot(pdev, chip, first_bar + i); | |
763 | if (IS_ERR(slot)) { | |
764 | for (i--;i >= 0;i--) | |
765 | sdhci_pci_remove_slot(chip->slots[i]); | |
766 | ret = PTR_ERR(slot); | |
767 | goto free; | |
768 | } | |
769 | ||
770 | chip->slots[i] = slot; | |
771 | } | |
772 | ||
773 | return 0; | |
774 | ||
775 | free: | |
776 | pci_set_drvdata(pdev, NULL); | |
777 | kfree(chip); | |
778 | ||
779 | err: | |
780 | pci_disable_device(pdev); | |
781 | return ret; | |
782 | } | |
783 | ||
784 | static void __devexit sdhci_pci_remove(struct pci_dev *pdev) | |
785 | { | |
786 | int i; | |
787 | struct sdhci_pci_chip *chip; | |
788 | ||
789 | chip = pci_get_drvdata(pdev); | |
790 | ||
791 | if (chip) { | |
792 | for (i = 0;i < chip->num_slots; i++) | |
793 | sdhci_pci_remove_slot(chip->slots[i]); | |
794 | ||
795 | pci_set_drvdata(pdev, NULL); | |
796 | kfree(chip); | |
797 | } | |
798 | ||
799 | pci_disable_device(pdev); | |
800 | } | |
801 | ||
802 | static struct pci_driver sdhci_driver = { | |
803 | .name = "sdhci-pci", | |
804 | .id_table = pci_ids, | |
805 | .probe = sdhci_pci_probe, | |
806 | .remove = __devexit_p(sdhci_pci_remove), | |
807 | .suspend = sdhci_pci_suspend, | |
808 | .resume = sdhci_pci_resume, | |
809 | }; | |
810 | ||
811 | /*****************************************************************************\ | |
812 | * * | |
813 | * Driver init/exit * | |
814 | * * | |
815 | \*****************************************************************************/ | |
816 | ||
817 | static int __init sdhci_drv_init(void) | |
818 | { | |
819 | return pci_register_driver(&sdhci_driver); | |
820 | } | |
821 | ||
822 | static void __exit sdhci_drv_exit(void) | |
823 | { | |
824 | pci_unregister_driver(&sdhci_driver); | |
825 | } | |
826 | ||
827 | module_init(sdhci_drv_init); | |
828 | module_exit(sdhci_drv_exit); | |
829 | ||
32710e8f | 830 | MODULE_AUTHOR("Pierre Ossman <pierre@ossman.eu>"); |
b8c86fc5 PO |
831 | MODULE_DESCRIPTION("Secure Digital Host Controller Interface PCI driver"); |
832 | MODULE_LICENSE("GPL"); |