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f0bf7f61 HW |
1 | /* |
2 | * drivers/mmc/host/via-sdmmc.c - VIA SD/MMC Card Reader driver | |
3 | * Copyright (c) 2008, VIA Technologies Inc. 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 | ||
11 | #include <linux/pci.h> | |
12 | #include <linux/dma-mapping.h> | |
13 | #include <linux/highmem.h> | |
14 | #include <linux/delay.h> | |
15 | ||
16 | #include <linux/mmc/host.h> | |
17 | ||
18 | #define DRV_NAME "via_sdmmc" | |
19 | ||
20 | #define PCI_DEVICE_ID_VIA_9530 0x9530 | |
21 | ||
22 | #define VIA_CRDR_SDC_OFF 0x200 | |
23 | #define VIA_CRDR_DDMA_OFF 0x400 | |
24 | #define VIA_CRDR_PCICTRL_OFF 0x600 | |
25 | ||
26 | #define VIA_CRDR_MIN_CLOCK 375000 | |
27 | #define VIA_CRDR_MAX_CLOCK 48000000 | |
28 | ||
29 | /* | |
30 | * PCI registers | |
31 | */ | |
32 | ||
33 | #define VIA_CRDR_PCI_WORK_MODE 0x40 | |
34 | #define VIA_CRDR_PCI_DBG_MODE 0x41 | |
35 | ||
36 | /* | |
37 | * SDC MMIO Registers | |
38 | */ | |
39 | ||
40 | #define VIA_CRDR_SDCTRL 0x0 | |
41 | #define VIA_CRDR_SDCTRL_START 0x01 | |
42 | #define VIA_CRDR_SDCTRL_WRITE 0x04 | |
43 | #define VIA_CRDR_SDCTRL_SINGLE_WR 0x10 | |
44 | #define VIA_CRDR_SDCTRL_SINGLE_RD 0x20 | |
45 | #define VIA_CRDR_SDCTRL_MULTI_WR 0x30 | |
46 | #define VIA_CRDR_SDCTRL_MULTI_RD 0x40 | |
47 | #define VIA_CRDR_SDCTRL_STOP 0x70 | |
48 | ||
49 | #define VIA_CRDR_SDCTRL_RSP_NONE 0x0 | |
50 | #define VIA_CRDR_SDCTRL_RSP_R1 0x10000 | |
51 | #define VIA_CRDR_SDCTRL_RSP_R2 0x20000 | |
52 | #define VIA_CRDR_SDCTRL_RSP_R3 0x30000 | |
53 | #define VIA_CRDR_SDCTRL_RSP_R1B 0x90000 | |
54 | ||
55 | #define VIA_CRDR_SDCARG 0x4 | |
56 | ||
57 | #define VIA_CRDR_SDBUSMODE 0x8 | |
58 | #define VIA_CRDR_SDMODE_4BIT 0x02 | |
59 | #define VIA_CRDR_SDMODE_CLK_ON 0x40 | |
60 | ||
61 | #define VIA_CRDR_SDBLKLEN 0xc | |
62 | /* | |
63 | * Bit 0 -Bit 10 : Block length. So, the maximum block length should be 2048. | |
64 | * Bit 11 - Bit 13 : Reserved. | |
65 | * GPIDET : Select GPI pin to detect card, GPI means CR_CD# in top design. | |
66 | * INTEN : Enable SD host interrupt. | |
67 | * Bit 16 - Bit 31 : Block count. So, the maximun block count should be 65536. | |
68 | */ | |
69 | #define VIA_CRDR_SDBLKLEN_GPIDET 0x2000 | |
70 | #define VIA_CRDR_SDBLKLEN_INTEN 0x8000 | |
71 | #define VIA_CRDR_MAX_BLOCK_COUNT 65536 | |
72 | #define VIA_CRDR_MAX_BLOCK_LENGTH 2048 | |
73 | ||
74 | #define VIA_CRDR_SDRESP0 0x10 | |
75 | #define VIA_CRDR_SDRESP1 0x14 | |
76 | #define VIA_CRDR_SDRESP2 0x18 | |
77 | #define VIA_CRDR_SDRESP3 0x1c | |
78 | ||
79 | #define VIA_CRDR_SDCURBLKCNT 0x20 | |
80 | ||
81 | #define VIA_CRDR_SDINTMASK 0x24 | |
82 | /* | |
83 | * MBDIE : Multiple Blocks transfer Done Interrupt Enable | |
84 | * BDDIE : Block Data transfer Done Interrupt Enable | |
85 | * CIRIE : Card Insertion or Removal Interrupt Enable | |
86 | * CRDIE : Command-Response transfer Done Interrupt Enable | |
87 | * CRTOIE : Command-Response response TimeOut Interrupt Enable | |
88 | * ASCRDIE : Auto Stop Command-Response transfer Done Interrupt Enable | |
89 | * DTIE : Data access Timeout Interrupt Enable | |
90 | * SCIE : reSponse CRC error Interrupt Enable | |
91 | * RCIE : Read data CRC error Interrupt Enable | |
92 | * WCIE : Write data CRC error Interrupt Enable | |
93 | */ | |
94 | #define VIA_CRDR_SDINTMASK_MBDIE 0x10 | |
95 | #define VIA_CRDR_SDINTMASK_BDDIE 0x20 | |
96 | #define VIA_CRDR_SDINTMASK_CIRIE 0x80 | |
97 | #define VIA_CRDR_SDINTMASK_CRDIE 0x200 | |
98 | #define VIA_CRDR_SDINTMASK_CRTOIE 0x400 | |
99 | #define VIA_CRDR_SDINTMASK_ASCRDIE 0x800 | |
100 | #define VIA_CRDR_SDINTMASK_DTIE 0x1000 | |
101 | #define VIA_CRDR_SDINTMASK_SCIE 0x2000 | |
102 | #define VIA_CRDR_SDINTMASK_RCIE 0x4000 | |
103 | #define VIA_CRDR_SDINTMASK_WCIE 0x8000 | |
104 | ||
105 | #define VIA_CRDR_SDACTIVE_INTMASK \ | |
106 | (VIA_CRDR_SDINTMASK_MBDIE | VIA_CRDR_SDINTMASK_CIRIE \ | |
107 | | VIA_CRDR_SDINTMASK_CRDIE | VIA_CRDR_SDINTMASK_CRTOIE \ | |
108 | | VIA_CRDR_SDINTMASK_DTIE | VIA_CRDR_SDINTMASK_SCIE \ | |
109 | | VIA_CRDR_SDINTMASK_RCIE | VIA_CRDR_SDINTMASK_WCIE) | |
110 | ||
111 | #define VIA_CRDR_SDSTATUS 0x28 | |
112 | /* | |
113 | * CECC : Reserved | |
114 | * WP : SD card Write Protect status | |
115 | * SLOTD : Reserved | |
116 | * SLOTG : SD SLOT status(Gpi pin status) | |
117 | * MBD : Multiple Blocks transfer Done interrupt status | |
118 | * BDD : Block Data transfer Done interrupt status | |
119 | * CD : Reserved | |
120 | * CIR : Card Insertion or Removal interrupt detected on GPI pin | |
121 | * IO : Reserved | |
122 | * CRD : Command-Response transfer Done interrupt status | |
123 | * CRTO : Command-Response response TimeOut interrupt status | |
124 | * ASCRDIE : Auto Stop Command-Response transfer Done interrupt status | |
125 | * DT : Data access Timeout interrupt status | |
126 | * SC : reSponse CRC error interrupt status | |
127 | * RC : Read data CRC error interrupt status | |
128 | * WC : Write data CRC error interrupt status | |
129 | */ | |
130 | #define VIA_CRDR_SDSTS_CECC 0x01 | |
131 | #define VIA_CRDR_SDSTS_WP 0x02 | |
132 | #define VIA_CRDR_SDSTS_SLOTD 0x04 | |
133 | #define VIA_CRDR_SDSTS_SLOTG 0x08 | |
134 | #define VIA_CRDR_SDSTS_MBD 0x10 | |
135 | #define VIA_CRDR_SDSTS_BDD 0x20 | |
136 | #define VIA_CRDR_SDSTS_CD 0x40 | |
137 | #define VIA_CRDR_SDSTS_CIR 0x80 | |
138 | #define VIA_CRDR_SDSTS_IO 0x100 | |
139 | #define VIA_CRDR_SDSTS_CRD 0x200 | |
140 | #define VIA_CRDR_SDSTS_CRTO 0x400 | |
141 | #define VIA_CRDR_SDSTS_ASCRDIE 0x800 | |
142 | #define VIA_CRDR_SDSTS_DT 0x1000 | |
143 | #define VIA_CRDR_SDSTS_SC 0x2000 | |
144 | #define VIA_CRDR_SDSTS_RC 0x4000 | |
145 | #define VIA_CRDR_SDSTS_WC 0x8000 | |
146 | ||
147 | #define VIA_CRDR_SDSTS_IGN_MASK\ | |
148 | (VIA_CRDR_SDSTS_BDD | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_IO) | |
149 | #define VIA_CRDR_SDSTS_INT_MASK \ | |
150 | (VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_BDD | VIA_CRDR_SDSTS_CD \ | |
151 | | VIA_CRDR_SDSTS_CIR | VIA_CRDR_SDSTS_IO | VIA_CRDR_SDSTS_CRD \ | |
152 | | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_DT \ | |
153 | | VIA_CRDR_SDSTS_SC | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC) | |
154 | #define VIA_CRDR_SDSTS_W1C_MASK \ | |
155 | (VIA_CRDR_SDSTS_CECC | VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_BDD \ | |
156 | | VIA_CRDR_SDSTS_CD | VIA_CRDR_SDSTS_CIR | VIA_CRDR_SDSTS_CRD \ | |
157 | | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_DT \ | |
158 | | VIA_CRDR_SDSTS_SC | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC) | |
159 | #define VIA_CRDR_SDSTS_CMD_MASK \ | |
160 | (VIA_CRDR_SDSTS_CRD | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_SC) | |
161 | #define VIA_CRDR_SDSTS_DATA_MASK\ | |
162 | (VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_DT \ | |
163 | | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC) | |
164 | ||
165 | #define VIA_CRDR_SDSTATUS2 0x2a | |
166 | /* | |
167 | * CFE : Enable SD host automatic Clock FReezing | |
168 | */ | |
169 | #define VIA_CRDR_SDSTS_CFE 0x80 | |
170 | ||
171 | #define VIA_CRDR_SDRSPTMO 0x2C | |
172 | ||
173 | #define VIA_CRDR_SDCLKSEL 0x30 | |
174 | ||
175 | #define VIA_CRDR_SDEXTCTRL 0x34 | |
176 | #define VIS_CRDR_SDEXTCTRL_AUTOSTOP_SD 0x01 | |
177 | #define VIS_CRDR_SDEXTCTRL_SHIFT_9 0x02 | |
178 | #define VIS_CRDR_SDEXTCTRL_MMC_8BIT 0x04 | |
179 | #define VIS_CRDR_SDEXTCTRL_RELD_BLK 0x08 | |
180 | #define VIS_CRDR_SDEXTCTRL_BAD_CMDA 0x10 | |
181 | #define VIS_CRDR_SDEXTCTRL_BAD_DATA 0x20 | |
182 | #define VIS_CRDR_SDEXTCTRL_AUTOSTOP_SPI 0x40 | |
183 | #define VIA_CRDR_SDEXTCTRL_HISPD 0x80 | |
184 | /* 0x38-0xFF reserved */ | |
185 | ||
186 | /* | |
187 | * Data DMA Control Registers | |
188 | */ | |
189 | ||
190 | #define VIA_CRDR_DMABASEADD 0x0 | |
191 | #define VIA_CRDR_DMACOUNTER 0x4 | |
192 | ||
193 | #define VIA_CRDR_DMACTRL 0x8 | |
194 | /* | |
195 | * DIR :Transaction Direction | |
196 | * 0 : From card to memory | |
197 | * 1 : From memory to card | |
198 | */ | |
199 | #define VIA_CRDR_DMACTRL_DIR 0x100 | |
200 | #define VIA_CRDR_DMACTRL_ENIRQ 0x10000 | |
201 | #define VIA_CRDR_DMACTRL_SFTRST 0x1000000 | |
202 | ||
203 | #define VIA_CRDR_DMASTS 0xc | |
204 | ||
205 | #define VIA_CRDR_DMASTART 0x10 | |
206 | /*0x14-0xFF reserved*/ | |
207 | ||
208 | /* | |
209 | * PCI Control Registers | |
210 | */ | |
211 | ||
212 | /*0x0 - 0x1 reserved*/ | |
213 | #define VIA_CRDR_PCICLKGATT 0x2 | |
214 | /* | |
215 | * SFTRST : | |
216 | * 0 : Soft reset all the controller and it will be de-asserted automatically | |
217 | * 1 : Soft reset is de-asserted | |
218 | */ | |
219 | #define VIA_CRDR_PCICLKGATT_SFTRST 0x01 | |
220 | /* | |
221 | * 3V3 : Pad power select | |
222 | * 0 : 1.8V | |
223 | * 1 : 3.3V | |
224 | * NOTE : No mater what the actual value should be, this bit always | |
225 | * read as 0. This is a hardware bug. | |
226 | */ | |
227 | #define VIA_CRDR_PCICLKGATT_3V3 0x10 | |
228 | /* | |
229 | * PAD_PWRON : Pad Power on/off select | |
230 | * 0 : Power off | |
231 | * 1 : Power on | |
232 | * NOTE : No mater what the actual value should be, this bit always | |
233 | * read as 0. This is a hardware bug. | |
234 | */ | |
235 | #define VIA_CRDR_PCICLKGATT_PAD_PWRON 0x20 | |
236 | ||
237 | #define VIA_CRDR_PCISDCCLK 0x5 | |
238 | ||
239 | #define VIA_CRDR_PCIDMACLK 0x7 | |
240 | #define VIA_CRDR_PCIDMACLK_SDC 0x2 | |
241 | ||
242 | #define VIA_CRDR_PCIINTCTRL 0x8 | |
243 | #define VIA_CRDR_PCIINTCTRL_SDCIRQEN 0x04 | |
244 | ||
245 | #define VIA_CRDR_PCIINTSTATUS 0x9 | |
246 | #define VIA_CRDR_PCIINTSTATUS_SDC 0x04 | |
247 | ||
248 | #define VIA_CRDR_PCITMOCTRL 0xa | |
249 | #define VIA_CRDR_PCITMOCTRL_NO 0x0 | |
250 | #define VIA_CRDR_PCITMOCTRL_32US 0x1 | |
251 | #define VIA_CRDR_PCITMOCTRL_256US 0x2 | |
252 | #define VIA_CRDR_PCITMOCTRL_1024US 0x3 | |
253 | #define VIA_CRDR_PCITMOCTRL_256MS 0x4 | |
254 | #define VIA_CRDR_PCITMOCTRL_512MS 0x5 | |
255 | #define VIA_CRDR_PCITMOCTRL_1024MS 0x6 | |
256 | ||
257 | /*0xB-0xFF reserved*/ | |
258 | ||
259 | enum PCI_HOST_CLK_CONTROL { | |
260 | PCI_CLK_375K = 0x03, | |
261 | PCI_CLK_8M = 0x04, | |
262 | PCI_CLK_12M = 0x00, | |
263 | PCI_CLK_16M = 0x05, | |
264 | PCI_CLK_24M = 0x01, | |
265 | PCI_CLK_33M = 0x06, | |
266 | PCI_CLK_48M = 0x02 | |
267 | }; | |
268 | ||
269 | struct sdhcreg { | |
270 | u32 sdcontrol_reg; | |
271 | u32 sdcmdarg_reg; | |
272 | u32 sdbusmode_reg; | |
273 | u32 sdblklen_reg; | |
274 | u32 sdresp_reg[4]; | |
275 | u32 sdcurblkcnt_reg; | |
276 | u32 sdintmask_reg; | |
277 | u32 sdstatus_reg; | |
278 | u32 sdrsptmo_reg; | |
279 | u32 sdclksel_reg; | |
280 | u32 sdextctrl_reg; | |
281 | }; | |
282 | ||
283 | struct pcictrlreg { | |
284 | u8 reserve[2]; | |
285 | u8 pciclkgat_reg; | |
286 | u8 pcinfcclk_reg; | |
287 | u8 pcimscclk_reg; | |
288 | u8 pcisdclk_reg; | |
289 | u8 pcicaclk_reg; | |
290 | u8 pcidmaclk_reg; | |
291 | u8 pciintctrl_reg; | |
292 | u8 pciintstatus_reg; | |
293 | u8 pcitmoctrl_reg; | |
294 | u8 Resv; | |
295 | }; | |
296 | ||
297 | struct via_crdr_mmc_host { | |
298 | struct mmc_host *mmc; | |
299 | struct mmc_request *mrq; | |
300 | struct mmc_command *cmd; | |
301 | struct mmc_data *data; | |
302 | ||
303 | void __iomem *mmiobase; | |
304 | void __iomem *sdhc_mmiobase; | |
305 | void __iomem *ddma_mmiobase; | |
306 | void __iomem *pcictrl_mmiobase; | |
307 | ||
308 | struct pcictrlreg pm_pcictrl_reg; | |
309 | struct sdhcreg pm_sdhc_reg; | |
310 | ||
311 | struct work_struct carddet_work; | |
312 | struct tasklet_struct finish_tasklet; | |
313 | ||
314 | struct timer_list timer; | |
315 | spinlock_t lock; | |
316 | u8 power; | |
317 | int reject; | |
318 | unsigned int quirks; | |
319 | }; | |
320 | ||
321 | /* some devices need a very long delay for power to stabilize */ | |
322 | #define VIA_CRDR_QUIRK_300MS_PWRDELAY 0x0001 | |
323 | ||
324 | static struct pci_device_id via_ids[] = { | |
325 | {PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_9530, | |
326 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0,}, | |
327 | {0,} | |
328 | }; | |
329 | ||
330 | MODULE_DEVICE_TABLE(pci, via_ids); | |
331 | ||
332 | static void via_print_sdchc(struct via_crdr_mmc_host *host) | |
333 | { | |
334 | void __iomem *addrbase = host->sdhc_mmiobase; | |
335 | ||
336 | pr_debug("SDC MMIO Registers:\n"); | |
337 | pr_debug("SDCONTROL=%08x, SDCMDARG=%08x, SDBUSMODE=%08x\n", | |
338 | readl(addrbase + VIA_CRDR_SDCTRL), | |
339 | readl(addrbase + VIA_CRDR_SDCARG), | |
340 | readl(addrbase + VIA_CRDR_SDBUSMODE)); | |
341 | pr_debug("SDBLKLEN=%08x, SDCURBLKCNT=%08x, SDINTMASK=%08x\n", | |
342 | readl(addrbase + VIA_CRDR_SDBLKLEN), | |
343 | readl(addrbase + VIA_CRDR_SDCURBLKCNT), | |
344 | readl(addrbase + VIA_CRDR_SDINTMASK)); | |
345 | pr_debug("SDSTATUS=%08x, SDCLKSEL=%08x, SDEXTCTRL=%08x\n", | |
346 | readl(addrbase + VIA_CRDR_SDSTATUS), | |
347 | readl(addrbase + VIA_CRDR_SDCLKSEL), | |
348 | readl(addrbase + VIA_CRDR_SDEXTCTRL)); | |
349 | } | |
350 | ||
351 | static void via_print_pcictrl(struct via_crdr_mmc_host *host) | |
352 | { | |
353 | void __iomem *addrbase = host->pcictrl_mmiobase; | |
354 | ||
355 | pr_debug("PCI Control Registers:\n"); | |
356 | pr_debug("PCICLKGATT=%02x, PCISDCCLK=%02x, PCIDMACLK=%02x\n", | |
357 | readb(addrbase + VIA_CRDR_PCICLKGATT), | |
358 | readb(addrbase + VIA_CRDR_PCISDCCLK), | |
359 | readb(addrbase + VIA_CRDR_PCIDMACLK)); | |
360 | pr_debug("PCIINTCTRL=%02x, PCIINTSTATUS=%02x\n", | |
361 | readb(addrbase + VIA_CRDR_PCIINTCTRL), | |
362 | readb(addrbase + VIA_CRDR_PCIINTSTATUS)); | |
363 | } | |
364 | ||
365 | static void via_save_pcictrlreg(struct via_crdr_mmc_host *host) | |
366 | { | |
367 | struct pcictrlreg *pm_pcictrl_reg; | |
368 | void __iomem *addrbase; | |
369 | ||
370 | pm_pcictrl_reg = &(host->pm_pcictrl_reg); | |
371 | addrbase = host->pcictrl_mmiobase; | |
372 | ||
373 | pm_pcictrl_reg->pciclkgat_reg = readb(addrbase + VIA_CRDR_PCICLKGATT); | |
374 | pm_pcictrl_reg->pciclkgat_reg |= | |
375 | VIA_CRDR_PCICLKGATT_3V3 | VIA_CRDR_PCICLKGATT_PAD_PWRON; | |
376 | pm_pcictrl_reg->pcisdclk_reg = readb(addrbase + VIA_CRDR_PCISDCCLK); | |
377 | pm_pcictrl_reg->pcidmaclk_reg = readb(addrbase + VIA_CRDR_PCIDMACLK); | |
378 | pm_pcictrl_reg->pciintctrl_reg = readb(addrbase + VIA_CRDR_PCIINTCTRL); | |
379 | pm_pcictrl_reg->pciintstatus_reg = | |
380 | readb(addrbase + VIA_CRDR_PCIINTSTATUS); | |
381 | pm_pcictrl_reg->pcitmoctrl_reg = readb(addrbase + VIA_CRDR_PCITMOCTRL); | |
382 | } | |
383 | ||
384 | static void via_restore_pcictrlreg(struct via_crdr_mmc_host *host) | |
385 | { | |
386 | struct pcictrlreg *pm_pcictrl_reg; | |
387 | void __iomem *addrbase; | |
388 | ||
389 | pm_pcictrl_reg = &(host->pm_pcictrl_reg); | |
390 | addrbase = host->pcictrl_mmiobase; | |
391 | ||
392 | writeb(pm_pcictrl_reg->pciclkgat_reg, addrbase + VIA_CRDR_PCICLKGATT); | |
393 | writeb(pm_pcictrl_reg->pcisdclk_reg, addrbase + VIA_CRDR_PCISDCCLK); | |
394 | writeb(pm_pcictrl_reg->pcidmaclk_reg, addrbase + VIA_CRDR_PCIDMACLK); | |
395 | writeb(pm_pcictrl_reg->pciintctrl_reg, addrbase + VIA_CRDR_PCIINTCTRL); | |
396 | writeb(pm_pcictrl_reg->pciintstatus_reg, | |
397 | addrbase + VIA_CRDR_PCIINTSTATUS); | |
398 | writeb(pm_pcictrl_reg->pcitmoctrl_reg, addrbase + VIA_CRDR_PCITMOCTRL); | |
399 | } | |
400 | ||
401 | static void via_save_sdcreg(struct via_crdr_mmc_host *host) | |
402 | { | |
403 | struct sdhcreg *pm_sdhc_reg; | |
404 | void __iomem *addrbase; | |
405 | ||
406 | pm_sdhc_reg = &(host->pm_sdhc_reg); | |
407 | addrbase = host->sdhc_mmiobase; | |
408 | ||
409 | pm_sdhc_reg->sdcontrol_reg = readl(addrbase + VIA_CRDR_SDCTRL); | |
410 | pm_sdhc_reg->sdcmdarg_reg = readl(addrbase + VIA_CRDR_SDCARG); | |
411 | pm_sdhc_reg->sdbusmode_reg = readl(addrbase + VIA_CRDR_SDBUSMODE); | |
412 | pm_sdhc_reg->sdblklen_reg = readl(addrbase + VIA_CRDR_SDBLKLEN); | |
413 | pm_sdhc_reg->sdcurblkcnt_reg = readl(addrbase + VIA_CRDR_SDCURBLKCNT); | |
414 | pm_sdhc_reg->sdintmask_reg = readl(addrbase + VIA_CRDR_SDINTMASK); | |
415 | pm_sdhc_reg->sdstatus_reg = readl(addrbase + VIA_CRDR_SDSTATUS); | |
416 | pm_sdhc_reg->sdrsptmo_reg = readl(addrbase + VIA_CRDR_SDRSPTMO); | |
417 | pm_sdhc_reg->sdclksel_reg = readl(addrbase + VIA_CRDR_SDCLKSEL); | |
418 | pm_sdhc_reg->sdextctrl_reg = readl(addrbase + VIA_CRDR_SDEXTCTRL); | |
419 | } | |
420 | ||
421 | static void via_restore_sdcreg(struct via_crdr_mmc_host *host) | |
422 | { | |
423 | struct sdhcreg *pm_sdhc_reg; | |
424 | void __iomem *addrbase; | |
425 | ||
426 | pm_sdhc_reg = &(host->pm_sdhc_reg); | |
427 | addrbase = host->sdhc_mmiobase; | |
428 | ||
429 | writel(pm_sdhc_reg->sdcontrol_reg, addrbase + VIA_CRDR_SDCTRL); | |
430 | writel(pm_sdhc_reg->sdcmdarg_reg, addrbase + VIA_CRDR_SDCARG); | |
431 | writel(pm_sdhc_reg->sdbusmode_reg, addrbase + VIA_CRDR_SDBUSMODE); | |
432 | writel(pm_sdhc_reg->sdblklen_reg, addrbase + VIA_CRDR_SDBLKLEN); | |
433 | writel(pm_sdhc_reg->sdcurblkcnt_reg, addrbase + VIA_CRDR_SDCURBLKCNT); | |
434 | writel(pm_sdhc_reg->sdintmask_reg, addrbase + VIA_CRDR_SDINTMASK); | |
435 | writel(pm_sdhc_reg->sdstatus_reg, addrbase + VIA_CRDR_SDSTATUS); | |
436 | writel(pm_sdhc_reg->sdrsptmo_reg, addrbase + VIA_CRDR_SDRSPTMO); | |
437 | writel(pm_sdhc_reg->sdclksel_reg, addrbase + VIA_CRDR_SDCLKSEL); | |
438 | writel(pm_sdhc_reg->sdextctrl_reg, addrbase + VIA_CRDR_SDEXTCTRL); | |
439 | } | |
440 | ||
441 | static void via_pwron_sleep(struct via_crdr_mmc_host *sdhost) | |
442 | { | |
443 | if (sdhost->quirks & VIA_CRDR_QUIRK_300MS_PWRDELAY) | |
444 | msleep(300); | |
445 | else | |
446 | msleep(3); | |
447 | } | |
448 | ||
449 | static void via_set_ddma(struct via_crdr_mmc_host *host, | |
450 | dma_addr_t dmaaddr, u32 count, int dir, int enirq) | |
451 | { | |
452 | void __iomem *addrbase; | |
453 | u32 ctrl_data = 0; | |
454 | ||
455 | if (enirq) | |
456 | ctrl_data |= VIA_CRDR_DMACTRL_ENIRQ; | |
457 | ||
458 | if (dir) | |
459 | ctrl_data |= VIA_CRDR_DMACTRL_DIR; | |
460 | ||
461 | addrbase = host->ddma_mmiobase; | |
462 | ||
463 | writel(dmaaddr, addrbase + VIA_CRDR_DMABASEADD); | |
464 | writel(count, addrbase + VIA_CRDR_DMACOUNTER); | |
465 | writel(ctrl_data, addrbase + VIA_CRDR_DMACTRL); | |
466 | writel(0x01, addrbase + VIA_CRDR_DMASTART); | |
467 | ||
468 | /* It seems that our DMA can not work normally with 375kHz clock */ | |
469 | /* FIXME: don't brute-force 8MHz but use PIO at 375kHz !! */ | |
470 | addrbase = host->pcictrl_mmiobase; | |
471 | if (readb(addrbase + VIA_CRDR_PCISDCCLK) == PCI_CLK_375K) { | |
472 | dev_info(host->mmc->parent, "forcing card speed to 8MHz\n"); | |
473 | writeb(PCI_CLK_8M, addrbase + VIA_CRDR_PCISDCCLK); | |
474 | } | |
475 | } | |
476 | ||
477 | static void via_sdc_preparedata(struct via_crdr_mmc_host *host, | |
478 | struct mmc_data *data) | |
479 | { | |
480 | void __iomem *addrbase; | |
481 | u32 blk_reg; | |
482 | int count; | |
483 | ||
484 | WARN_ON(host->data); | |
485 | ||
486 | /* Sanity checks */ | |
487 | BUG_ON(data->blksz > host->mmc->max_blk_size); | |
488 | BUG_ON(data->blocks > host->mmc->max_blk_count); | |
489 | ||
490 | host->data = data; | |
491 | ||
492 | count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, | |
493 | ((data->flags & MMC_DATA_READ) ? | |
494 | PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE)); | |
495 | BUG_ON(count != 1); | |
496 | ||
497 | via_set_ddma(host, sg_dma_address(data->sg), sg_dma_len(data->sg), | |
498 | (data->flags & MMC_DATA_WRITE) ? 1 : 0, 1); | |
499 | ||
500 | addrbase = host->sdhc_mmiobase; | |
501 | ||
502 | blk_reg = data->blksz - 1; | |
503 | blk_reg |= VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN; | |
504 | blk_reg |= (data->blocks) << 16; | |
505 | ||
506 | writel(blk_reg, addrbase + VIA_CRDR_SDBLKLEN); | |
507 | } | |
508 | ||
509 | static void via_sdc_get_response(struct via_crdr_mmc_host *host, | |
510 | struct mmc_command *cmd) | |
511 | { | |
512 | void __iomem *addrbase = host->sdhc_mmiobase; | |
513 | u32 dwdata0 = readl(addrbase + VIA_CRDR_SDRESP0); | |
514 | u32 dwdata1 = readl(addrbase + VIA_CRDR_SDRESP1); | |
515 | u32 dwdata2 = readl(addrbase + VIA_CRDR_SDRESP2); | |
516 | u32 dwdata3 = readl(addrbase + VIA_CRDR_SDRESP3); | |
517 | ||
518 | if (cmd->flags & MMC_RSP_136) { | |
519 | cmd->resp[0] = ((u8) (dwdata1)) | | |
520 | (((u8) (dwdata0 >> 24)) << 8) | | |
521 | (((u8) (dwdata0 >> 16)) << 16) | | |
522 | (((u8) (dwdata0 >> 8)) << 24); | |
523 | ||
524 | cmd->resp[1] = ((u8) (dwdata2)) | | |
525 | (((u8) (dwdata1 >> 24)) << 8) | | |
526 | (((u8) (dwdata1 >> 16)) << 16) | | |
527 | (((u8) (dwdata1 >> 8)) << 24); | |
528 | ||
529 | cmd->resp[2] = ((u8) (dwdata3)) | | |
530 | (((u8) (dwdata2 >> 24)) << 8) | | |
531 | (((u8) (dwdata2 >> 16)) << 16) | | |
532 | (((u8) (dwdata2 >> 8)) << 24); | |
533 | ||
534 | cmd->resp[3] = 0xff | | |
535 | ((((u8) (dwdata3 >> 24))) << 8) | | |
536 | (((u8) (dwdata3 >> 16)) << 16) | | |
537 | (((u8) (dwdata3 >> 8)) << 24); | |
538 | } else { | |
539 | dwdata0 >>= 8; | |
540 | cmd->resp[0] = ((dwdata0 & 0xff) << 24) | | |
541 | (((dwdata0 >> 8) & 0xff) << 16) | | |
542 | (((dwdata0 >> 16) & 0xff) << 8) | (dwdata1 & 0xff); | |
543 | ||
544 | dwdata1 >>= 8; | |
545 | cmd->resp[1] = ((dwdata1 & 0xff) << 24) | | |
546 | (((dwdata1 >> 8) & 0xff) << 16) | | |
547 | (((dwdata1 >> 16) & 0xff) << 8); | |
548 | } | |
549 | } | |
550 | ||
551 | static void via_sdc_send_command(struct via_crdr_mmc_host *host, | |
552 | struct mmc_command *cmd) | |
553 | { | |
554 | void __iomem *addrbase; | |
555 | struct mmc_data *data; | |
556 | u32 cmdctrl = 0; | |
557 | ||
558 | WARN_ON(host->cmd); | |
559 | ||
560 | data = cmd->data; | |
561 | mod_timer(&host->timer, jiffies + HZ); | |
562 | host->cmd = cmd; | |
563 | ||
564 | /*Command index*/ | |
565 | cmdctrl = cmd->opcode << 8; | |
566 | ||
567 | /*Response type*/ | |
568 | switch (mmc_resp_type(cmd)) { | |
569 | case MMC_RSP_NONE: | |
570 | cmdctrl |= VIA_CRDR_SDCTRL_RSP_NONE; | |
571 | break; | |
572 | case MMC_RSP_R1: | |
573 | cmdctrl |= VIA_CRDR_SDCTRL_RSP_R1; | |
574 | break; | |
575 | case MMC_RSP_R1B: | |
576 | cmdctrl |= VIA_CRDR_SDCTRL_RSP_R1B; | |
577 | break; | |
578 | case MMC_RSP_R2: | |
579 | cmdctrl |= VIA_CRDR_SDCTRL_RSP_R2; | |
580 | break; | |
581 | case MMC_RSP_R3: | |
582 | cmdctrl |= VIA_CRDR_SDCTRL_RSP_R3; | |
583 | break; | |
584 | default: | |
585 | pr_err("%s: cmd->flag is not valid\n", mmc_hostname(host->mmc)); | |
586 | break; | |
587 | } | |
588 | ||
589 | if (!(cmd->data)) | |
590 | goto nodata; | |
591 | ||
592 | via_sdc_preparedata(host, data); | |
593 | ||
594 | /*Command control*/ | |
595 | if (data->blocks > 1) { | |
596 | if (data->flags & MMC_DATA_WRITE) { | |
597 | cmdctrl |= VIA_CRDR_SDCTRL_WRITE; | |
598 | cmdctrl |= VIA_CRDR_SDCTRL_MULTI_WR; | |
599 | } else { | |
600 | cmdctrl |= VIA_CRDR_SDCTRL_MULTI_RD; | |
601 | } | |
602 | } else { | |
603 | if (data->flags & MMC_DATA_WRITE) { | |
604 | cmdctrl |= VIA_CRDR_SDCTRL_WRITE; | |
605 | cmdctrl |= VIA_CRDR_SDCTRL_SINGLE_WR; | |
606 | } else { | |
607 | cmdctrl |= VIA_CRDR_SDCTRL_SINGLE_RD; | |
608 | } | |
609 | } | |
610 | ||
611 | nodata: | |
612 | if (cmd == host->mrq->stop) | |
613 | cmdctrl |= VIA_CRDR_SDCTRL_STOP; | |
614 | ||
615 | cmdctrl |= VIA_CRDR_SDCTRL_START; | |
616 | ||
617 | addrbase = host->sdhc_mmiobase; | |
618 | writel(cmd->arg, addrbase + VIA_CRDR_SDCARG); | |
619 | writel(cmdctrl, addrbase + VIA_CRDR_SDCTRL); | |
620 | } | |
621 | ||
622 | static void via_sdc_finish_data(struct via_crdr_mmc_host *host) | |
623 | { | |
624 | struct mmc_data *data; | |
625 | ||
626 | BUG_ON(!host->data); | |
627 | ||
628 | data = host->data; | |
629 | host->data = NULL; | |
630 | ||
631 | if (data->error) | |
632 | data->bytes_xfered = 0; | |
633 | else | |
634 | data->bytes_xfered = data->blocks * data->blksz; | |
635 | ||
636 | dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, | |
637 | ((data->flags & MMC_DATA_READ) ? | |
638 | PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE)); | |
639 | ||
640 | if (data->stop) | |
641 | via_sdc_send_command(host, data->stop); | |
642 | else | |
643 | tasklet_schedule(&host->finish_tasklet); | |
644 | } | |
645 | ||
646 | static void via_sdc_finish_command(struct via_crdr_mmc_host *host) | |
647 | { | |
648 | via_sdc_get_response(host, host->cmd); | |
649 | ||
650 | host->cmd->error = 0; | |
651 | ||
652 | if (!host->cmd->data) | |
653 | tasklet_schedule(&host->finish_tasklet); | |
654 | ||
655 | host->cmd = NULL; | |
656 | } | |
657 | ||
658 | static void via_sdc_request(struct mmc_host *mmc, struct mmc_request *mrq) | |
659 | { | |
660 | void __iomem *addrbase; | |
661 | struct via_crdr_mmc_host *host; | |
662 | unsigned long flags; | |
663 | u16 status; | |
664 | ||
665 | host = mmc_priv(mmc); | |
666 | ||
667 | spin_lock_irqsave(&host->lock, flags); | |
668 | ||
669 | addrbase = host->pcictrl_mmiobase; | |
670 | writeb(VIA_CRDR_PCIDMACLK_SDC, addrbase + VIA_CRDR_PCIDMACLK); | |
671 | ||
672 | status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS); | |
673 | status &= VIA_CRDR_SDSTS_W1C_MASK; | |
674 | writew(status, host->sdhc_mmiobase + VIA_CRDR_SDSTATUS); | |
675 | ||
676 | WARN_ON(host->mrq != NULL); | |
677 | host->mrq = mrq; | |
678 | ||
679 | status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS); | |
680 | if (!(status & VIA_CRDR_SDSTS_SLOTG) || host->reject) { | |
681 | host->mrq->cmd->error = -ENOMEDIUM; | |
682 | tasklet_schedule(&host->finish_tasklet); | |
683 | } else { | |
684 | via_sdc_send_command(host, mrq->cmd); | |
685 | } | |
686 | ||
687 | mmiowb(); | |
688 | spin_unlock_irqrestore(&host->lock, flags); | |
689 | } | |
690 | ||
691 | static void via_sdc_set_power(struct via_crdr_mmc_host *host, | |
692 | unsigned short power, unsigned int on) | |
693 | { | |
694 | unsigned long flags; | |
695 | u8 gatt; | |
696 | ||
697 | spin_lock_irqsave(&host->lock, flags); | |
698 | ||
699 | host->power = (1 << power); | |
700 | ||
701 | gatt = readb(host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); | |
702 | if (host->power == MMC_VDD_165_195) | |
703 | gatt &= ~VIA_CRDR_PCICLKGATT_3V3; | |
704 | else | |
705 | gatt |= VIA_CRDR_PCICLKGATT_3V3; | |
706 | if (on) | |
707 | gatt |= VIA_CRDR_PCICLKGATT_PAD_PWRON; | |
708 | else | |
709 | gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON; | |
710 | writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); | |
711 | ||
712 | mmiowb(); | |
713 | spin_unlock_irqrestore(&host->lock, flags); | |
714 | ||
715 | via_pwron_sleep(host); | |
716 | } | |
717 | ||
718 | static void via_sdc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) | |
719 | { | |
720 | struct via_crdr_mmc_host *host; | |
721 | unsigned long flags; | |
722 | void __iomem *addrbase; | |
723 | u32 org_data, sdextctrl; | |
724 | u8 clock; | |
725 | ||
726 | host = mmc_priv(mmc); | |
727 | ||
728 | spin_lock_irqsave(&host->lock, flags); | |
729 | ||
730 | addrbase = host->sdhc_mmiobase; | |
731 | org_data = readl(addrbase + VIA_CRDR_SDBUSMODE); | |
732 | sdextctrl = readl(addrbase + VIA_CRDR_SDEXTCTRL); | |
733 | ||
734 | if (ios->bus_width == MMC_BUS_WIDTH_1) | |
735 | org_data &= ~VIA_CRDR_SDMODE_4BIT; | |
736 | else | |
737 | org_data |= VIA_CRDR_SDMODE_4BIT; | |
738 | ||
739 | if (ios->power_mode == MMC_POWER_OFF) | |
740 | org_data &= ~VIA_CRDR_SDMODE_CLK_ON; | |
741 | else | |
742 | org_data |= VIA_CRDR_SDMODE_CLK_ON; | |
743 | ||
744 | if (ios->timing == MMC_TIMING_SD_HS) | |
745 | sdextctrl |= VIA_CRDR_SDEXTCTRL_HISPD; | |
746 | else | |
747 | sdextctrl &= ~VIA_CRDR_SDEXTCTRL_HISPD; | |
748 | ||
749 | writel(org_data, addrbase + VIA_CRDR_SDBUSMODE); | |
750 | writel(sdextctrl, addrbase + VIA_CRDR_SDEXTCTRL); | |
751 | ||
752 | if (ios->clock >= 48000000) | |
753 | clock = PCI_CLK_48M; | |
754 | else if (ios->clock >= 33000000) | |
755 | clock = PCI_CLK_33M; | |
756 | else if (ios->clock >= 24000000) | |
757 | clock = PCI_CLK_24M; | |
758 | else if (ios->clock >= 16000000) | |
759 | clock = PCI_CLK_16M; | |
760 | else if (ios->clock >= 12000000) | |
761 | clock = PCI_CLK_12M; | |
762 | else if (ios->clock >= 8000000) | |
763 | clock = PCI_CLK_8M; | |
764 | else | |
765 | clock = PCI_CLK_375K; | |
766 | ||
767 | addrbase = host->pcictrl_mmiobase; | |
768 | if (readb(addrbase + VIA_CRDR_PCISDCCLK) != clock) | |
769 | writeb(clock, addrbase + VIA_CRDR_PCISDCCLK); | |
770 | ||
771 | mmiowb(); | |
772 | spin_unlock_irqrestore(&host->lock, flags); | |
773 | ||
774 | if (ios->power_mode != MMC_POWER_OFF) | |
775 | via_sdc_set_power(host, ios->vdd, 1); | |
776 | else | |
777 | via_sdc_set_power(host, ios->vdd, 0); | |
778 | } | |
779 | ||
780 | static int via_sdc_get_ro(struct mmc_host *mmc) | |
781 | { | |
782 | struct via_crdr_mmc_host *host; | |
783 | unsigned long flags; | |
784 | u16 status; | |
785 | ||
786 | host = mmc_priv(mmc); | |
787 | ||
788 | spin_lock_irqsave(&host->lock, flags); | |
789 | ||
790 | status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS); | |
791 | ||
792 | spin_unlock_irqrestore(&host->lock, flags); | |
793 | ||
794 | return !(status & VIA_CRDR_SDSTS_WP); | |
795 | } | |
796 | ||
797 | static const struct mmc_host_ops via_sdc_ops = { | |
798 | .request = via_sdc_request, | |
799 | .set_ios = via_sdc_set_ios, | |
800 | .get_ro = via_sdc_get_ro, | |
801 | }; | |
802 | ||
803 | static void via_reset_pcictrl(struct via_crdr_mmc_host *host) | |
804 | { | |
805 | void __iomem *addrbase; | |
806 | unsigned long flags; | |
807 | u8 gatt; | |
808 | ||
809 | addrbase = host->pcictrl_mmiobase; | |
810 | ||
811 | spin_lock_irqsave(&host->lock, flags); | |
812 | ||
813 | via_save_pcictrlreg(host); | |
814 | via_save_sdcreg(host); | |
815 | ||
816 | spin_unlock_irqrestore(&host->lock, flags); | |
817 | ||
818 | gatt = VIA_CRDR_PCICLKGATT_PAD_PWRON; | |
819 | if (host->power == MMC_VDD_165_195) | |
820 | gatt &= VIA_CRDR_PCICLKGATT_3V3; | |
821 | else | |
822 | gatt |= VIA_CRDR_PCICLKGATT_3V3; | |
823 | writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); | |
824 | via_pwron_sleep(host); | |
825 | gatt |= VIA_CRDR_PCICLKGATT_SFTRST; | |
826 | writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); | |
827 | msleep(3); | |
828 | ||
829 | spin_lock_irqsave(&host->lock, flags); | |
830 | ||
831 | via_restore_pcictrlreg(host); | |
832 | via_restore_sdcreg(host); | |
833 | ||
834 | mmiowb(); | |
835 | spin_unlock_irqrestore(&host->lock, flags); | |
836 | } | |
837 | ||
838 | static void via_sdc_cmd_isr(struct via_crdr_mmc_host *host, u16 intmask) | |
839 | { | |
840 | BUG_ON(intmask == 0); | |
841 | ||
842 | if (!host->cmd) { | |
843 | pr_err("%s: Got command interrupt 0x%x even " | |
844 | "though no command operation was in progress.\n", | |
845 | mmc_hostname(host->mmc), intmask); | |
846 | return; | |
847 | } | |
848 | ||
849 | if (intmask & VIA_CRDR_SDSTS_CRTO) | |
850 | host->cmd->error = -ETIMEDOUT; | |
851 | else if (intmask & VIA_CRDR_SDSTS_SC) | |
852 | host->cmd->error = -EILSEQ; | |
853 | ||
854 | if (host->cmd->error) | |
855 | tasklet_schedule(&host->finish_tasklet); | |
856 | else if (intmask & VIA_CRDR_SDSTS_CRD) | |
857 | via_sdc_finish_command(host); | |
858 | } | |
859 | ||
860 | static void via_sdc_data_isr(struct via_crdr_mmc_host *host, u16 intmask) | |
861 | { | |
862 | BUG_ON(intmask == 0); | |
863 | ||
864 | if (intmask & VIA_CRDR_SDSTS_DT) | |
865 | host->data->error = -ETIMEDOUT; | |
866 | else if (intmask & (VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)) | |
867 | host->data->error = -EILSEQ; | |
868 | ||
869 | via_sdc_finish_data(host); | |
870 | } | |
871 | ||
872 | static irqreturn_t via_sdc_isr(int irq, void *dev_id) | |
873 | { | |
874 | struct via_crdr_mmc_host *sdhost = dev_id; | |
875 | void __iomem *addrbase; | |
876 | u8 pci_status; | |
877 | u16 sd_status; | |
878 | irqreturn_t result; | |
879 | ||
880 | if (!sdhost) | |
881 | return IRQ_NONE; | |
882 | ||
883 | spin_lock(&sdhost->lock); | |
884 | ||
885 | addrbase = sdhost->pcictrl_mmiobase; | |
886 | pci_status = readb(addrbase + VIA_CRDR_PCIINTSTATUS); | |
887 | if (!(pci_status & VIA_CRDR_PCIINTSTATUS_SDC)) { | |
888 | result = IRQ_NONE; | |
889 | goto out; | |
890 | } | |
891 | ||
892 | addrbase = sdhost->sdhc_mmiobase; | |
893 | sd_status = readw(addrbase + VIA_CRDR_SDSTATUS); | |
894 | sd_status &= VIA_CRDR_SDSTS_INT_MASK; | |
895 | sd_status &= ~VIA_CRDR_SDSTS_IGN_MASK; | |
896 | if (!sd_status) { | |
897 | result = IRQ_NONE; | |
898 | goto out; | |
899 | } | |
900 | ||
901 | if (sd_status & VIA_CRDR_SDSTS_CIR) { | |
902 | writew(sd_status & VIA_CRDR_SDSTS_CIR, | |
903 | addrbase + VIA_CRDR_SDSTATUS); | |
904 | ||
905 | schedule_work(&sdhost->carddet_work); | |
906 | } | |
907 | ||
908 | sd_status &= ~VIA_CRDR_SDSTS_CIR; | |
909 | if (sd_status & VIA_CRDR_SDSTS_CMD_MASK) { | |
910 | writew(sd_status & VIA_CRDR_SDSTS_CMD_MASK, | |
911 | addrbase + VIA_CRDR_SDSTATUS); | |
912 | via_sdc_cmd_isr(sdhost, sd_status & VIA_CRDR_SDSTS_CMD_MASK); | |
913 | } | |
914 | if (sd_status & VIA_CRDR_SDSTS_DATA_MASK) { | |
915 | writew(sd_status & VIA_CRDR_SDSTS_DATA_MASK, | |
916 | addrbase + VIA_CRDR_SDSTATUS); | |
917 | via_sdc_data_isr(sdhost, sd_status & VIA_CRDR_SDSTS_DATA_MASK); | |
918 | } | |
919 | ||
920 | sd_status &= ~(VIA_CRDR_SDSTS_CMD_MASK | VIA_CRDR_SDSTS_DATA_MASK); | |
921 | if (sd_status) { | |
922 | pr_err("%s: Unexpected interrupt 0x%x\n", | |
923 | mmc_hostname(sdhost->mmc), sd_status); | |
924 | writew(sd_status, addrbase + VIA_CRDR_SDSTATUS); | |
925 | } | |
926 | ||
927 | result = IRQ_HANDLED; | |
928 | ||
929 | mmiowb(); | |
930 | out: | |
931 | spin_unlock(&sdhost->lock); | |
932 | ||
933 | return result; | |
934 | } | |
935 | ||
936 | static void via_sdc_timeout(unsigned long ulongdata) | |
937 | { | |
938 | struct via_crdr_mmc_host *sdhost; | |
939 | unsigned long flags; | |
940 | ||
941 | sdhost = (struct via_crdr_mmc_host *)ulongdata; | |
942 | ||
943 | spin_lock_irqsave(&sdhost->lock, flags); | |
944 | ||
945 | if (sdhost->mrq) { | |
946 | pr_err("%s: Timeout waiting for hardware interrupt." | |
947 | "cmd:0x%x\n", mmc_hostname(sdhost->mmc), | |
948 | sdhost->mrq->cmd->opcode); | |
949 | ||
950 | if (sdhost->data) { | |
951 | writel(VIA_CRDR_DMACTRL_SFTRST, | |
952 | sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL); | |
953 | sdhost->data->error = -ETIMEDOUT; | |
954 | via_sdc_finish_data(sdhost); | |
955 | } else { | |
956 | if (sdhost->cmd) | |
957 | sdhost->cmd->error = -ETIMEDOUT; | |
958 | else | |
959 | sdhost->mrq->cmd->error = -ETIMEDOUT; | |
960 | tasklet_schedule(&sdhost->finish_tasklet); | |
961 | } | |
962 | } | |
963 | ||
964 | mmiowb(); | |
965 | spin_unlock_irqrestore(&sdhost->lock, flags); | |
966 | } | |
967 | ||
968 | static void via_sdc_tasklet_finish(unsigned long param) | |
969 | { | |
970 | struct via_crdr_mmc_host *host; | |
971 | unsigned long flags; | |
972 | struct mmc_request *mrq; | |
973 | ||
974 | host = (struct via_crdr_mmc_host *)param; | |
975 | ||
976 | spin_lock_irqsave(&host->lock, flags); | |
977 | ||
978 | del_timer(&host->timer); | |
979 | mrq = host->mrq; | |
980 | host->mrq = NULL; | |
981 | host->cmd = NULL; | |
982 | host->data = NULL; | |
983 | ||
984 | spin_unlock_irqrestore(&host->lock, flags); | |
985 | ||
986 | mmc_request_done(host->mmc, mrq); | |
987 | } | |
988 | ||
989 | static void via_sdc_card_detect(struct work_struct *work) | |
990 | { | |
991 | struct via_crdr_mmc_host *host; | |
992 | void __iomem *addrbase; | |
993 | unsigned long flags; | |
994 | u16 status; | |
995 | ||
996 | host = container_of(work, struct via_crdr_mmc_host, carddet_work); | |
997 | ||
998 | addrbase = host->ddma_mmiobase; | |
999 | writel(VIA_CRDR_DMACTRL_SFTRST, addrbase + VIA_CRDR_DMACTRL); | |
1000 | ||
1001 | spin_lock_irqsave(&host->lock, flags); | |
1002 | ||
1003 | addrbase = host->pcictrl_mmiobase; | |
1004 | writeb(VIA_CRDR_PCIDMACLK_SDC, addrbase + VIA_CRDR_PCIDMACLK); | |
1005 | ||
1006 | addrbase = host->sdhc_mmiobase; | |
1007 | status = readw(addrbase + VIA_CRDR_SDSTATUS); | |
1008 | if (!(status & VIA_CRDR_SDSTS_SLOTG)) { | |
1009 | if (host->mrq) { | |
1010 | pr_err("%s: Card removed during transfer!\n", | |
1011 | mmc_hostname(host->mmc)); | |
1012 | host->mrq->cmd->error = -ENOMEDIUM; | |
1013 | tasklet_schedule(&host->finish_tasklet); | |
1014 | } | |
1015 | ||
1016 | mmiowb(); | |
1017 | spin_unlock_irqrestore(&host->lock, flags); | |
1018 | ||
1019 | via_reset_pcictrl(host); | |
1020 | ||
1021 | spin_lock_irqsave(&host->lock, flags); | |
1022 | } | |
1023 | ||
1024 | mmiowb(); | |
1025 | spin_unlock_irqrestore(&host->lock, flags); | |
1026 | ||
1027 | via_print_pcictrl(host); | |
1028 | via_print_sdchc(host); | |
1029 | ||
1030 | mmc_detect_change(host->mmc, msecs_to_jiffies(500)); | |
1031 | } | |
1032 | ||
1033 | static void via_init_mmc_host(struct via_crdr_mmc_host *host) | |
1034 | { | |
1035 | struct mmc_host *mmc = host->mmc; | |
1036 | void __iomem *addrbase; | |
1037 | u32 lenreg; | |
1038 | u32 status; | |
1039 | ||
1040 | init_timer(&host->timer); | |
1041 | host->timer.data = (unsigned long)host; | |
1042 | host->timer.function = via_sdc_timeout; | |
1043 | ||
1044 | spin_lock_init(&host->lock); | |
1045 | ||
1046 | mmc->f_min = VIA_CRDR_MIN_CLOCK; | |
1047 | mmc->f_max = VIA_CRDR_MAX_CLOCK; | |
1048 | mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; | |
1049 | mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED; | |
1050 | mmc->ops = &via_sdc_ops; | |
1051 | ||
1052 | /*Hardware cannot do scatter lists*/ | |
1053 | mmc->max_hw_segs = 1; | |
1054 | mmc->max_phys_segs = 1; | |
1055 | ||
1056 | mmc->max_blk_size = VIA_CRDR_MAX_BLOCK_LENGTH; | |
1057 | mmc->max_blk_count = VIA_CRDR_MAX_BLOCK_COUNT; | |
1058 | ||
1059 | mmc->max_seg_size = mmc->max_blk_size * mmc->max_blk_count; | |
1060 | mmc->max_req_size = mmc->max_seg_size; | |
1061 | ||
1062 | INIT_WORK(&host->carddet_work, via_sdc_card_detect); | |
1063 | ||
1064 | tasklet_init(&host->finish_tasklet, via_sdc_tasklet_finish, | |
1065 | (unsigned long)host); | |
1066 | ||
1067 | addrbase = host->sdhc_mmiobase; | |
1068 | writel(0x0, addrbase + VIA_CRDR_SDINTMASK); | |
1069 | msleep(1); | |
1070 | ||
1071 | lenreg = VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN; | |
1072 | writel(lenreg, addrbase + VIA_CRDR_SDBLKLEN); | |
1073 | ||
1074 | status = readw(addrbase + VIA_CRDR_SDSTATUS); | |
1075 | status &= VIA_CRDR_SDSTS_W1C_MASK; | |
1076 | writew(status, addrbase + VIA_CRDR_SDSTATUS); | |
1077 | ||
1078 | status = readw(addrbase + VIA_CRDR_SDSTATUS2); | |
1079 | status |= VIA_CRDR_SDSTS_CFE; | |
1080 | writew(status, addrbase + VIA_CRDR_SDSTATUS2); | |
1081 | ||
1082 | writeb(0x0, addrbase + VIA_CRDR_SDEXTCTRL); | |
1083 | ||
1084 | writel(VIA_CRDR_SDACTIVE_INTMASK, addrbase + VIA_CRDR_SDINTMASK); | |
1085 | msleep(1); | |
1086 | } | |
1087 | ||
1088 | static int __devinit via_sd_probe(struct pci_dev *pcidev, | |
1089 | const struct pci_device_id *id) | |
1090 | { | |
1091 | struct mmc_host *mmc; | |
1092 | struct via_crdr_mmc_host *sdhost; | |
1093 | u32 base, len; | |
1094 | u8 rev, gatt; | |
1095 | int ret; | |
1096 | ||
1097 | pci_read_config_byte(pcidev, PCI_CLASS_REVISION, &rev); | |
1098 | pr_info(DRV_NAME | |
1099 | ": VIA SDMMC controller found at %s [%04x:%04x] (rev %x)\n", | |
1100 | pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device, | |
1101 | (int)rev); | |
1102 | ||
1103 | ret = pci_enable_device(pcidev); | |
1104 | if (ret) | |
1105 | return ret; | |
1106 | ||
1107 | ret = pci_request_regions(pcidev, DRV_NAME); | |
1108 | if (ret) | |
1109 | goto disable; | |
1110 | ||
1111 | pci_write_config_byte(pcidev, VIA_CRDR_PCI_WORK_MODE, 0); | |
1112 | pci_write_config_byte(pcidev, VIA_CRDR_PCI_DBG_MODE, 0); | |
1113 | ||
1114 | mmc = mmc_alloc_host(sizeof(struct via_crdr_mmc_host), &pcidev->dev); | |
1115 | if (!mmc) { | |
1116 | ret = -ENOMEM; | |
1117 | goto release; | |
1118 | } | |
1119 | ||
1120 | sdhost = mmc_priv(mmc); | |
1121 | sdhost->mmc = mmc; | |
1122 | dev_set_drvdata(&pcidev->dev, sdhost); | |
1123 | ||
1124 | len = pci_resource_len(pcidev, 0); | |
1125 | base = pci_resource_start(pcidev, 0); | |
1126 | sdhost->mmiobase = ioremap_nocache(base, len); | |
1127 | if (!sdhost->mmiobase) { | |
1128 | ret = -ENOMEM; | |
1129 | goto free_mmc_host; | |
1130 | } | |
1131 | ||
1132 | sdhost->sdhc_mmiobase = | |
1133 | sdhost->mmiobase + VIA_CRDR_SDC_OFF; | |
1134 | sdhost->ddma_mmiobase = | |
1135 | sdhost->mmiobase + VIA_CRDR_DDMA_OFF; | |
1136 | sdhost->pcictrl_mmiobase = | |
1137 | sdhost->mmiobase + VIA_CRDR_PCICTRL_OFF; | |
1138 | ||
1139 | sdhost->power = MMC_VDD_165_195; | |
1140 | ||
1141 | gatt = VIA_CRDR_PCICLKGATT_3V3 | VIA_CRDR_PCICLKGATT_PAD_PWRON; | |
1142 | writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); | |
1143 | via_pwron_sleep(sdhost); | |
1144 | gatt |= VIA_CRDR_PCICLKGATT_SFTRST; | |
1145 | writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); | |
1146 | msleep(3); | |
1147 | ||
1148 | via_init_mmc_host(sdhost); | |
1149 | ||
1150 | ret = | |
1151 | request_irq(pcidev->irq, via_sdc_isr, IRQF_SHARED, DRV_NAME, | |
1152 | sdhost); | |
1153 | if (ret) | |
1154 | goto unmap; | |
1155 | ||
1156 | writeb(VIA_CRDR_PCIINTCTRL_SDCIRQEN, | |
1157 | sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL); | |
1158 | writeb(VIA_CRDR_PCITMOCTRL_1024MS, | |
1159 | sdhost->pcictrl_mmiobase + VIA_CRDR_PCITMOCTRL); | |
1160 | ||
1161 | /* device-specific quirks */ | |
1162 | if (pcidev->subsystem_vendor == PCI_VENDOR_ID_LENOVO && | |
1163 | pcidev->subsystem_device == 0x3891) | |
1164 | sdhost->quirks = VIA_CRDR_QUIRK_300MS_PWRDELAY; | |
1165 | ||
1166 | mmc_add_host(mmc); | |
1167 | ||
1168 | return 0; | |
1169 | ||
1170 | unmap: | |
1171 | iounmap(sdhost->mmiobase); | |
1172 | free_mmc_host: | |
1173 | dev_set_drvdata(&pcidev->dev, NULL); | |
1174 | mmc_free_host(mmc); | |
1175 | release: | |
1176 | pci_release_regions(pcidev); | |
1177 | disable: | |
1178 | pci_disable_device(pcidev); | |
1179 | ||
1180 | return ret; | |
1181 | } | |
1182 | ||
1183 | static void __devexit via_sd_remove(struct pci_dev *pcidev) | |
1184 | { | |
1185 | struct via_crdr_mmc_host *sdhost = pci_get_drvdata(pcidev); | |
1186 | unsigned long flags; | |
1187 | u8 gatt; | |
1188 | ||
1189 | spin_lock_irqsave(&sdhost->lock, flags); | |
1190 | ||
1191 | /* Ensure we don't accept more commands from mmc layer */ | |
1192 | sdhost->reject = 1; | |
1193 | ||
1194 | /* Disable generating further interrupts */ | |
1195 | writeb(0x0, sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL); | |
1196 | mmiowb(); | |
1197 | ||
1198 | if (sdhost->mrq) { | |
1199 | printk(KERN_ERR "%s: Controller removed during " | |
1200 | "transfer\n", mmc_hostname(sdhost->mmc)); | |
1201 | ||
1202 | /* make sure all DMA is stopped */ | |
1203 | writel(VIA_CRDR_DMACTRL_SFTRST, | |
1204 | sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL); | |
1205 | mmiowb(); | |
1206 | sdhost->mrq->cmd->error = -ENOMEDIUM; | |
1207 | if (sdhost->mrq->stop) | |
1208 | sdhost->mrq->stop->error = -ENOMEDIUM; | |
1209 | tasklet_schedule(&sdhost->finish_tasklet); | |
1210 | } | |
1211 | spin_unlock_irqrestore(&sdhost->lock, flags); | |
1212 | ||
1213 | mmc_remove_host(sdhost->mmc); | |
1214 | ||
1215 | free_irq(pcidev->irq, sdhost); | |
1216 | ||
1217 | del_timer_sync(&sdhost->timer); | |
1218 | ||
1219 | tasklet_kill(&sdhost->finish_tasklet); | |
1220 | ||
1221 | /* switch off power */ | |
1222 | gatt = readb(sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); | |
1223 | gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON; | |
1224 | writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); | |
1225 | ||
1226 | iounmap(sdhost->mmiobase); | |
1227 | dev_set_drvdata(&pcidev->dev, NULL); | |
1228 | mmc_free_host(sdhost->mmc); | |
1229 | pci_release_regions(pcidev); | |
1230 | pci_disable_device(pcidev); | |
1231 | ||
1232 | pr_info(DRV_NAME | |
1233 | ": VIA SDMMC controller at %s [%04x:%04x] has been removed\n", | |
1234 | pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device); | |
1235 | } | |
1236 | ||
1237 | #ifdef CONFIG_PM | |
1238 | ||
1239 | static void via_init_sdc_pm(struct via_crdr_mmc_host *host) | |
1240 | { | |
1241 | struct sdhcreg *pm_sdhcreg; | |
1242 | void __iomem *addrbase; | |
1243 | u32 lenreg; | |
1244 | u16 status; | |
1245 | ||
1246 | pm_sdhcreg = &(host->pm_sdhc_reg); | |
1247 | addrbase = host->sdhc_mmiobase; | |
1248 | ||
1249 | writel(0x0, addrbase + VIA_CRDR_SDINTMASK); | |
1250 | ||
1251 | lenreg = VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN; | |
1252 | writel(lenreg, addrbase + VIA_CRDR_SDBLKLEN); | |
1253 | ||
1254 | status = readw(addrbase + VIA_CRDR_SDSTATUS); | |
1255 | status &= VIA_CRDR_SDSTS_W1C_MASK; | |
1256 | writew(status, addrbase + VIA_CRDR_SDSTATUS); | |
1257 | ||
1258 | status = readw(addrbase + VIA_CRDR_SDSTATUS2); | |
1259 | status |= VIA_CRDR_SDSTS_CFE; | |
1260 | writew(status, addrbase + VIA_CRDR_SDSTATUS2); | |
1261 | ||
1262 | writel(pm_sdhcreg->sdcontrol_reg, addrbase + VIA_CRDR_SDCTRL); | |
1263 | writel(pm_sdhcreg->sdcmdarg_reg, addrbase + VIA_CRDR_SDCARG); | |
1264 | writel(pm_sdhcreg->sdintmask_reg, addrbase + VIA_CRDR_SDINTMASK); | |
1265 | writel(pm_sdhcreg->sdrsptmo_reg, addrbase + VIA_CRDR_SDRSPTMO); | |
1266 | writel(pm_sdhcreg->sdclksel_reg, addrbase + VIA_CRDR_SDCLKSEL); | |
1267 | writel(pm_sdhcreg->sdextctrl_reg, addrbase + VIA_CRDR_SDEXTCTRL); | |
1268 | ||
1269 | via_print_pcictrl(host); | |
1270 | via_print_sdchc(host); | |
1271 | } | |
1272 | ||
1273 | static int via_sd_suspend(struct pci_dev *pcidev, pm_message_t state) | |
1274 | { | |
1275 | struct via_crdr_mmc_host *host; | |
1276 | int ret = 0; | |
1277 | ||
1278 | host = pci_get_drvdata(pcidev); | |
1279 | ||
1280 | via_save_pcictrlreg(host); | |
1281 | via_save_sdcreg(host); | |
1282 | ||
1283 | ret = mmc_suspend_host(host->mmc, state); | |
1284 | ||
1285 | pci_save_state(pcidev); | |
1286 | pci_enable_wake(pcidev, pci_choose_state(pcidev, state), 0); | |
1287 | pci_disable_device(pcidev); | |
1288 | pci_set_power_state(pcidev, pci_choose_state(pcidev, state)); | |
1289 | ||
1290 | return ret; | |
1291 | } | |
1292 | ||
1293 | static int via_sd_resume(struct pci_dev *pcidev) | |
1294 | { | |
1295 | struct via_crdr_mmc_host *sdhost; | |
1296 | int ret = 0; | |
1297 | u8 gatt; | |
1298 | ||
1299 | sdhost = pci_get_drvdata(pcidev); | |
1300 | ||
1301 | gatt = VIA_CRDR_PCICLKGATT_PAD_PWRON; | |
1302 | if (sdhost->power == MMC_VDD_165_195) | |
1303 | gatt &= ~VIA_CRDR_PCICLKGATT_3V3; | |
1304 | else | |
1305 | gatt |= VIA_CRDR_PCICLKGATT_3V3; | |
1306 | writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); | |
1307 | via_pwron_sleep(sdhost); | |
1308 | gatt |= VIA_CRDR_PCICLKGATT_SFTRST; | |
1309 | writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT); | |
1310 | msleep(3); | |
1311 | ||
1312 | msleep(100); | |
1313 | ||
1314 | pci_set_power_state(pcidev, PCI_D0); | |
1315 | pci_restore_state(pcidev); | |
1316 | ret = pci_enable_device(pcidev); | |
1317 | if (ret) | |
1318 | return ret; | |
1319 | ||
1320 | via_restore_pcictrlreg(sdhost); | |
1321 | via_init_sdc_pm(sdhost); | |
1322 | ||
1323 | ret = mmc_resume_host(sdhost->mmc); | |
1324 | ||
1325 | return ret; | |
1326 | } | |
1327 | ||
1328 | #else /* CONFIG_PM */ | |
1329 | ||
1330 | #define via_sd_suspend NULL | |
1331 | #define via_sd_resume NULL | |
1332 | ||
1333 | #endif /* CONFIG_PM */ | |
1334 | ||
1335 | static struct pci_driver via_sd_driver = { | |
1336 | .name = DRV_NAME, | |
1337 | .id_table = via_ids, | |
1338 | .probe = via_sd_probe, | |
1339 | .remove = __devexit_p(via_sd_remove), | |
1340 | .suspend = via_sd_suspend, | |
1341 | .resume = via_sd_resume, | |
1342 | }; | |
1343 | ||
1344 | static int __init via_sd_drv_init(void) | |
1345 | { | |
1346 | pr_info(DRV_NAME ": VIA SD/MMC Card Reader driver " | |
1347 | "(C) 2008 VIA Technologies, Inc.\n"); | |
1348 | ||
1349 | return pci_register_driver(&via_sd_driver); | |
1350 | } | |
1351 | ||
1352 | static void __exit via_sd_drv_exit(void) | |
1353 | { | |
1354 | pci_unregister_driver(&via_sd_driver); | |
1355 | } | |
1356 | ||
1357 | module_init(via_sd_drv_init); | |
1358 | module_exit(via_sd_drv_exit); | |
1359 | ||
1360 | MODULE_LICENSE("GPL"); | |
1361 | MODULE_AUTHOR("VIA Technologies Inc."); | |
1362 | MODULE_DESCRIPTION("VIA SD/MMC Card Interface driver"); |