Commit | Line | Data |
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fdc50a94 YG |
1 | /* |
2 | * MMCIF eMMC driver. | |
3 | * | |
4 | * Copyright (C) 2010 Renesas Solutions Corp. | |
5 | * Yusuke Goda <yusuke.goda.sx@renesas.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License. | |
10 | * | |
11 | * | |
12 | * TODO | |
13 | * 1. DMA | |
14 | * 2. Power management | |
15 | * 3. Handle MMC errors better | |
16 | * | |
17 | */ | |
18 | ||
aa0787a9 GL |
19 | #include <linux/clk.h> |
20 | #include <linux/completion.h> | |
e47bf32a | 21 | #include <linux/delay.h> |
fdc50a94 | 22 | #include <linux/dma-mapping.h> |
a782d688 | 23 | #include <linux/dmaengine.h> |
fdc50a94 YG |
24 | #include <linux/mmc/card.h> |
25 | #include <linux/mmc/core.h> | |
e47bf32a | 26 | #include <linux/mmc/host.h> |
fdc50a94 YG |
27 | #include <linux/mmc/mmc.h> |
28 | #include <linux/mmc/sdio.h> | |
fdc50a94 | 29 | #include <linux/mmc/sh_mmcif.h> |
a782d688 | 30 | #include <linux/pagemap.h> |
e47bf32a | 31 | #include <linux/platform_device.h> |
fdc50a94 YG |
32 | |
33 | #define DRIVER_NAME "sh_mmcif" | |
34 | #define DRIVER_VERSION "2010-04-28" | |
35 | ||
fdc50a94 YG |
36 | /* CE_CMD_SET */ |
37 | #define CMD_MASK 0x3f000000 | |
38 | #define CMD_SET_RTYP_NO ((0 << 23) | (0 << 22)) | |
39 | #define CMD_SET_RTYP_6B ((0 << 23) | (1 << 22)) /* R1/R1b/R3/R4/R5 */ | |
40 | #define CMD_SET_RTYP_17B ((1 << 23) | (0 << 22)) /* R2 */ | |
41 | #define CMD_SET_RBSY (1 << 21) /* R1b */ | |
42 | #define CMD_SET_CCSEN (1 << 20) | |
43 | #define CMD_SET_WDAT (1 << 19) /* 1: on data, 0: no data */ | |
44 | #define CMD_SET_DWEN (1 << 18) /* 1: write, 0: read */ | |
45 | #define CMD_SET_CMLTE (1 << 17) /* 1: multi block trans, 0: single */ | |
46 | #define CMD_SET_CMD12EN (1 << 16) /* 1: CMD12 auto issue */ | |
47 | #define CMD_SET_RIDXC_INDEX ((0 << 15) | (0 << 14)) /* index check */ | |
48 | #define CMD_SET_RIDXC_BITS ((0 << 15) | (1 << 14)) /* check bits check */ | |
49 | #define CMD_SET_RIDXC_NO ((1 << 15) | (0 << 14)) /* no check */ | |
50 | #define CMD_SET_CRC7C ((0 << 13) | (0 << 12)) /* CRC7 check*/ | |
51 | #define CMD_SET_CRC7C_BITS ((0 << 13) | (1 << 12)) /* check bits check*/ | |
52 | #define CMD_SET_CRC7C_INTERNAL ((1 << 13) | (0 << 12)) /* internal CRC7 check*/ | |
53 | #define CMD_SET_CRC16C (1 << 10) /* 0: CRC16 check*/ | |
54 | #define CMD_SET_CRCSTE (1 << 8) /* 1: not receive CRC status */ | |
55 | #define CMD_SET_TBIT (1 << 7) /* 1: tran mission bit "Low" */ | |
56 | #define CMD_SET_OPDM (1 << 6) /* 1: open/drain */ | |
57 | #define CMD_SET_CCSH (1 << 5) | |
58 | #define CMD_SET_DATW_1 ((0 << 1) | (0 << 0)) /* 1bit */ | |
59 | #define CMD_SET_DATW_4 ((0 << 1) | (1 << 0)) /* 4bit */ | |
60 | #define CMD_SET_DATW_8 ((1 << 1) | (0 << 0)) /* 8bit */ | |
61 | ||
62 | /* CE_CMD_CTRL */ | |
63 | #define CMD_CTRL_BREAK (1 << 0) | |
64 | ||
65 | /* CE_BLOCK_SET */ | |
66 | #define BLOCK_SIZE_MASK 0x0000ffff | |
67 | ||
fdc50a94 YG |
68 | /* CE_INT */ |
69 | #define INT_CCSDE (1 << 29) | |
70 | #define INT_CMD12DRE (1 << 26) | |
71 | #define INT_CMD12RBE (1 << 25) | |
72 | #define INT_CMD12CRE (1 << 24) | |
73 | #define INT_DTRANE (1 << 23) | |
74 | #define INT_BUFRE (1 << 22) | |
75 | #define INT_BUFWEN (1 << 21) | |
76 | #define INT_BUFREN (1 << 20) | |
77 | #define INT_CCSRCV (1 << 19) | |
78 | #define INT_RBSYE (1 << 17) | |
79 | #define INT_CRSPE (1 << 16) | |
80 | #define INT_CMDVIO (1 << 15) | |
81 | #define INT_BUFVIO (1 << 14) | |
82 | #define INT_WDATERR (1 << 11) | |
83 | #define INT_RDATERR (1 << 10) | |
84 | #define INT_RIDXERR (1 << 9) | |
85 | #define INT_RSPERR (1 << 8) | |
86 | #define INT_CCSTO (1 << 5) | |
87 | #define INT_CRCSTO (1 << 4) | |
88 | #define INT_WDATTO (1 << 3) | |
89 | #define INT_RDATTO (1 << 2) | |
90 | #define INT_RBSYTO (1 << 1) | |
91 | #define INT_RSPTO (1 << 0) | |
92 | #define INT_ERR_STS (INT_CMDVIO | INT_BUFVIO | INT_WDATERR | \ | |
93 | INT_RDATERR | INT_RIDXERR | INT_RSPERR | \ | |
94 | INT_CCSTO | INT_CRCSTO | INT_WDATTO | \ | |
95 | INT_RDATTO | INT_RBSYTO | INT_RSPTO) | |
96 | ||
97 | /* CE_INT_MASK */ | |
98 | #define MASK_ALL 0x00000000 | |
99 | #define MASK_MCCSDE (1 << 29) | |
100 | #define MASK_MCMD12DRE (1 << 26) | |
101 | #define MASK_MCMD12RBE (1 << 25) | |
102 | #define MASK_MCMD12CRE (1 << 24) | |
103 | #define MASK_MDTRANE (1 << 23) | |
104 | #define MASK_MBUFRE (1 << 22) | |
105 | #define MASK_MBUFWEN (1 << 21) | |
106 | #define MASK_MBUFREN (1 << 20) | |
107 | #define MASK_MCCSRCV (1 << 19) | |
108 | #define MASK_MRBSYE (1 << 17) | |
109 | #define MASK_MCRSPE (1 << 16) | |
110 | #define MASK_MCMDVIO (1 << 15) | |
111 | #define MASK_MBUFVIO (1 << 14) | |
112 | #define MASK_MWDATERR (1 << 11) | |
113 | #define MASK_MRDATERR (1 << 10) | |
114 | #define MASK_MRIDXERR (1 << 9) | |
115 | #define MASK_MRSPERR (1 << 8) | |
116 | #define MASK_MCCSTO (1 << 5) | |
117 | #define MASK_MCRCSTO (1 << 4) | |
118 | #define MASK_MWDATTO (1 << 3) | |
119 | #define MASK_MRDATTO (1 << 2) | |
120 | #define MASK_MRBSYTO (1 << 1) | |
121 | #define MASK_MRSPTO (1 << 0) | |
122 | ||
123 | /* CE_HOST_STS1 */ | |
124 | #define STS1_CMDSEQ (1 << 31) | |
125 | ||
126 | /* CE_HOST_STS2 */ | |
127 | #define STS2_CRCSTE (1 << 31) | |
128 | #define STS2_CRC16E (1 << 30) | |
129 | #define STS2_AC12CRCE (1 << 29) | |
130 | #define STS2_RSPCRC7E (1 << 28) | |
131 | #define STS2_CRCSTEBE (1 << 27) | |
132 | #define STS2_RDATEBE (1 << 26) | |
133 | #define STS2_AC12REBE (1 << 25) | |
134 | #define STS2_RSPEBE (1 << 24) | |
135 | #define STS2_AC12IDXE (1 << 23) | |
136 | #define STS2_RSPIDXE (1 << 22) | |
137 | #define STS2_CCSTO (1 << 15) | |
138 | #define STS2_RDATTO (1 << 14) | |
139 | #define STS2_DATBSYTO (1 << 13) | |
140 | #define STS2_CRCSTTO (1 << 12) | |
141 | #define STS2_AC12BSYTO (1 << 11) | |
142 | #define STS2_RSPBSYTO (1 << 10) | |
143 | #define STS2_AC12RSPTO (1 << 9) | |
144 | #define STS2_RSPTO (1 << 8) | |
145 | #define STS2_CRC_ERR (STS2_CRCSTE | STS2_CRC16E | \ | |
146 | STS2_AC12CRCE | STS2_RSPCRC7E | STS2_CRCSTEBE) | |
147 | #define STS2_TIMEOUT_ERR (STS2_CCSTO | STS2_RDATTO | \ | |
148 | STS2_DATBSYTO | STS2_CRCSTTO | \ | |
149 | STS2_AC12BSYTO | STS2_RSPBSYTO | \ | |
150 | STS2_AC12RSPTO | STS2_RSPTO) | |
151 | ||
fdc50a94 YG |
152 | #define CLKDEV_EMMC_DATA 52000000 /* 52MHz */ |
153 | #define CLKDEV_MMC_DATA 20000000 /* 20MHz */ | |
154 | #define CLKDEV_INIT 400000 /* 400 KHz */ | |
155 | ||
156 | struct sh_mmcif_host { | |
157 | struct mmc_host *mmc; | |
158 | struct mmc_data *data; | |
fdc50a94 YG |
159 | struct platform_device *pd; |
160 | struct clk *hclk; | |
161 | unsigned int clk; | |
162 | int bus_width; | |
aa0787a9 | 163 | bool sd_error; |
fdc50a94 YG |
164 | long timeout; |
165 | void __iomem *addr; | |
aa0787a9 | 166 | struct completion intr_wait; |
fdc50a94 | 167 | |
a782d688 GL |
168 | /* DMA support */ |
169 | struct dma_chan *chan_rx; | |
170 | struct dma_chan *chan_tx; | |
171 | struct completion dma_complete; | |
f38f94c6 | 172 | bool dma_active; |
a782d688 | 173 | }; |
fdc50a94 YG |
174 | |
175 | static inline void sh_mmcif_bitset(struct sh_mmcif_host *host, | |
176 | unsigned int reg, u32 val) | |
177 | { | |
487d9fc5 | 178 | writel(val | readl(host->addr + reg), host->addr + reg); |
fdc50a94 YG |
179 | } |
180 | ||
181 | static inline void sh_mmcif_bitclr(struct sh_mmcif_host *host, | |
182 | unsigned int reg, u32 val) | |
183 | { | |
487d9fc5 | 184 | writel(~val & readl(host->addr + reg), host->addr + reg); |
fdc50a94 YG |
185 | } |
186 | ||
a782d688 GL |
187 | static void mmcif_dma_complete(void *arg) |
188 | { | |
189 | struct sh_mmcif_host *host = arg; | |
190 | dev_dbg(&host->pd->dev, "Command completed\n"); | |
191 | ||
192 | if (WARN(!host->data, "%s: NULL data in DMA completion!\n", | |
193 | dev_name(&host->pd->dev))) | |
194 | return; | |
195 | ||
196 | if (host->data->flags & MMC_DATA_READ) | |
1ed828db | 197 | dma_unmap_sg(host->chan_rx->device->dev, |
9dc3fb5e | 198 | host->data->sg, host->data->sg_len, |
a782d688 GL |
199 | DMA_FROM_DEVICE); |
200 | else | |
1ed828db | 201 | dma_unmap_sg(host->chan_tx->device->dev, |
9dc3fb5e | 202 | host->data->sg, host->data->sg_len, |
a782d688 GL |
203 | DMA_TO_DEVICE); |
204 | ||
205 | complete(&host->dma_complete); | |
206 | } | |
207 | ||
208 | static void sh_mmcif_start_dma_rx(struct sh_mmcif_host *host) | |
209 | { | |
210 | struct scatterlist *sg = host->data->sg; | |
211 | struct dma_async_tx_descriptor *desc = NULL; | |
212 | struct dma_chan *chan = host->chan_rx; | |
213 | dma_cookie_t cookie = -EINVAL; | |
214 | int ret; | |
215 | ||
1ed828db LW |
216 | ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len, |
217 | DMA_FROM_DEVICE); | |
a782d688 | 218 | if (ret > 0) { |
f38f94c6 | 219 | host->dma_active = true; |
a782d688 GL |
220 | desc = chan->device->device_prep_slave_sg(chan, sg, ret, |
221 | DMA_FROM_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); | |
222 | } | |
223 | ||
224 | if (desc) { | |
225 | desc->callback = mmcif_dma_complete; | |
226 | desc->callback_param = host; | |
a5ece7d2 LW |
227 | cookie = dmaengine_submit(desc); |
228 | sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN); | |
229 | dma_async_issue_pending(chan); | |
a782d688 GL |
230 | } |
231 | dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n", | |
232 | __func__, host->data->sg_len, ret, cookie); | |
233 | ||
234 | if (!desc) { | |
235 | /* DMA failed, fall back to PIO */ | |
236 | if (ret >= 0) | |
237 | ret = -EIO; | |
238 | host->chan_rx = NULL; | |
f38f94c6 | 239 | host->dma_active = false; |
a782d688 GL |
240 | dma_release_channel(chan); |
241 | /* Free the Tx channel too */ | |
242 | chan = host->chan_tx; | |
243 | if (chan) { | |
244 | host->chan_tx = NULL; | |
245 | dma_release_channel(chan); | |
246 | } | |
247 | dev_warn(&host->pd->dev, | |
248 | "DMA failed: %d, falling back to PIO\n", ret); | |
249 | sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN | BUF_ACC_DMAWEN); | |
250 | } | |
251 | ||
252 | dev_dbg(&host->pd->dev, "%s(): desc %p, cookie %d, sg[%d]\n", __func__, | |
253 | desc, cookie, host->data->sg_len); | |
254 | } | |
255 | ||
256 | static void sh_mmcif_start_dma_tx(struct sh_mmcif_host *host) | |
257 | { | |
258 | struct scatterlist *sg = host->data->sg; | |
259 | struct dma_async_tx_descriptor *desc = NULL; | |
260 | struct dma_chan *chan = host->chan_tx; | |
261 | dma_cookie_t cookie = -EINVAL; | |
262 | int ret; | |
263 | ||
1ed828db LW |
264 | ret = dma_map_sg(chan->device->dev, sg, host->data->sg_len, |
265 | DMA_TO_DEVICE); | |
a782d688 | 266 | if (ret > 0) { |
f38f94c6 | 267 | host->dma_active = true; |
a782d688 GL |
268 | desc = chan->device->device_prep_slave_sg(chan, sg, ret, |
269 | DMA_TO_DEVICE, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); | |
270 | } | |
271 | ||
272 | if (desc) { | |
273 | desc->callback = mmcif_dma_complete; | |
274 | desc->callback_param = host; | |
a5ece7d2 LW |
275 | cookie = dmaengine_submit(desc); |
276 | sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAWEN); | |
277 | dma_async_issue_pending(chan); | |
a782d688 GL |
278 | } |
279 | dev_dbg(&host->pd->dev, "%s(): mapped %d -> %d, cookie %d\n", | |
280 | __func__, host->data->sg_len, ret, cookie); | |
281 | ||
282 | if (!desc) { | |
283 | /* DMA failed, fall back to PIO */ | |
284 | if (ret >= 0) | |
285 | ret = -EIO; | |
286 | host->chan_tx = NULL; | |
f38f94c6 | 287 | host->dma_active = false; |
a782d688 GL |
288 | dma_release_channel(chan); |
289 | /* Free the Rx channel too */ | |
290 | chan = host->chan_rx; | |
291 | if (chan) { | |
292 | host->chan_rx = NULL; | |
293 | dma_release_channel(chan); | |
294 | } | |
295 | dev_warn(&host->pd->dev, | |
296 | "DMA failed: %d, falling back to PIO\n", ret); | |
297 | sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN | BUF_ACC_DMAWEN); | |
298 | } | |
299 | ||
300 | dev_dbg(&host->pd->dev, "%s(): desc %p, cookie %d\n", __func__, | |
301 | desc, cookie); | |
302 | } | |
303 | ||
304 | static bool sh_mmcif_filter(struct dma_chan *chan, void *arg) | |
305 | { | |
306 | dev_dbg(chan->device->dev, "%s: slave data %p\n", __func__, arg); | |
307 | chan->private = arg; | |
308 | return true; | |
309 | } | |
310 | ||
311 | static void sh_mmcif_request_dma(struct sh_mmcif_host *host, | |
312 | struct sh_mmcif_plat_data *pdata) | |
313 | { | |
f38f94c6 | 314 | host->dma_active = false; |
a782d688 GL |
315 | |
316 | /* We can only either use DMA for both Tx and Rx or not use it at all */ | |
317 | if (pdata->dma) { | |
318 | dma_cap_mask_t mask; | |
319 | ||
320 | dma_cap_zero(mask); | |
321 | dma_cap_set(DMA_SLAVE, mask); | |
322 | ||
323 | host->chan_tx = dma_request_channel(mask, sh_mmcif_filter, | |
324 | &pdata->dma->chan_priv_tx); | |
325 | dev_dbg(&host->pd->dev, "%s: TX: got channel %p\n", __func__, | |
326 | host->chan_tx); | |
327 | ||
328 | if (!host->chan_tx) | |
329 | return; | |
330 | ||
331 | host->chan_rx = dma_request_channel(mask, sh_mmcif_filter, | |
332 | &pdata->dma->chan_priv_rx); | |
333 | dev_dbg(&host->pd->dev, "%s: RX: got channel %p\n", __func__, | |
334 | host->chan_rx); | |
335 | ||
336 | if (!host->chan_rx) { | |
337 | dma_release_channel(host->chan_tx); | |
338 | host->chan_tx = NULL; | |
339 | return; | |
340 | } | |
341 | ||
342 | init_completion(&host->dma_complete); | |
343 | } | |
344 | } | |
345 | ||
346 | static void sh_mmcif_release_dma(struct sh_mmcif_host *host) | |
347 | { | |
348 | sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, BUF_ACC_DMAREN | BUF_ACC_DMAWEN); | |
349 | /* Descriptors are freed automatically */ | |
350 | if (host->chan_tx) { | |
351 | struct dma_chan *chan = host->chan_tx; | |
352 | host->chan_tx = NULL; | |
353 | dma_release_channel(chan); | |
354 | } | |
355 | if (host->chan_rx) { | |
356 | struct dma_chan *chan = host->chan_rx; | |
357 | host->chan_rx = NULL; | |
358 | dma_release_channel(chan); | |
359 | } | |
360 | ||
f38f94c6 | 361 | host->dma_active = false; |
a782d688 | 362 | } |
fdc50a94 YG |
363 | |
364 | static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk) | |
365 | { | |
366 | struct sh_mmcif_plat_data *p = host->pd->dev.platform_data; | |
367 | ||
368 | sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE); | |
369 | sh_mmcif_bitclr(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR); | |
370 | ||
371 | if (!clk) | |
372 | return; | |
373 | if (p->sup_pclk && clk == host->clk) | |
374 | sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_SUP_PCLK); | |
375 | else | |
376 | sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_CLEAR & | |
377 | (ilog2(__rounddown_pow_of_two(host->clk / clk)) << 16)); | |
378 | ||
379 | sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, CLK_ENABLE); | |
380 | } | |
381 | ||
382 | static void sh_mmcif_sync_reset(struct sh_mmcif_host *host) | |
383 | { | |
384 | u32 tmp; | |
385 | ||
487d9fc5 | 386 | tmp = 0x010f0000 & sh_mmcif_readl(host->addr, MMCIF_CE_CLK_CTRL); |
fdc50a94 | 387 | |
487d9fc5 MD |
388 | sh_mmcif_writel(host->addr, MMCIF_CE_VERSION, SOFT_RST_ON); |
389 | sh_mmcif_writel(host->addr, MMCIF_CE_VERSION, SOFT_RST_OFF); | |
fdc50a94 YG |
390 | sh_mmcif_bitset(host, MMCIF_CE_CLK_CTRL, tmp | |
391 | SRSPTO_256 | SRBSYTO_29 | SRWDTO_29 | SCCSTO_29); | |
392 | /* byte swap on */ | |
393 | sh_mmcif_bitset(host, MMCIF_CE_BUF_ACC, BUF_ACC_ATYP); | |
394 | } | |
395 | ||
396 | static int sh_mmcif_error_manage(struct sh_mmcif_host *host) | |
397 | { | |
398 | u32 state1, state2; | |
399 | int ret, timeout = 10000000; | |
400 | ||
aa0787a9 | 401 | host->sd_error = false; |
fdc50a94 | 402 | |
487d9fc5 MD |
403 | state1 = sh_mmcif_readl(host->addr, MMCIF_CE_HOST_STS1); |
404 | state2 = sh_mmcif_readl(host->addr, MMCIF_CE_HOST_STS2); | |
e47bf32a GL |
405 | dev_dbg(&host->pd->dev, "ERR HOST_STS1 = %08x\n", state1); |
406 | dev_dbg(&host->pd->dev, "ERR HOST_STS2 = %08x\n", state2); | |
fdc50a94 YG |
407 | |
408 | if (state1 & STS1_CMDSEQ) { | |
409 | sh_mmcif_bitset(host, MMCIF_CE_CMD_CTRL, CMD_CTRL_BREAK); | |
410 | sh_mmcif_bitset(host, MMCIF_CE_CMD_CTRL, ~CMD_CTRL_BREAK); | |
411 | while (1) { | |
412 | timeout--; | |
413 | if (timeout < 0) { | |
e47bf32a GL |
414 | dev_err(&host->pd->dev, |
415 | "Forceed end of command sequence timeout err\n"); | |
fdc50a94 YG |
416 | return -EIO; |
417 | } | |
487d9fc5 | 418 | if (!(sh_mmcif_readl(host->addr, MMCIF_CE_HOST_STS1) |
fdc50a94 YG |
419 | & STS1_CMDSEQ)) |
420 | break; | |
421 | mdelay(1); | |
422 | } | |
423 | sh_mmcif_sync_reset(host); | |
e47bf32a | 424 | dev_dbg(&host->pd->dev, "Forced end of command sequence\n"); |
fdc50a94 YG |
425 | return -EIO; |
426 | } | |
427 | ||
428 | if (state2 & STS2_CRC_ERR) { | |
e47bf32a | 429 | dev_dbg(&host->pd->dev, ": Happened CRC error\n"); |
fdc50a94 YG |
430 | ret = -EIO; |
431 | } else if (state2 & STS2_TIMEOUT_ERR) { | |
e47bf32a | 432 | dev_dbg(&host->pd->dev, ": Happened Timeout error\n"); |
fdc50a94 YG |
433 | ret = -ETIMEDOUT; |
434 | } else { | |
e47bf32a | 435 | dev_dbg(&host->pd->dev, ": Happened End/Index error\n"); |
fdc50a94 YG |
436 | ret = -EIO; |
437 | } | |
438 | return ret; | |
439 | } | |
440 | ||
441 | static int sh_mmcif_single_read(struct sh_mmcif_host *host, | |
442 | struct mmc_request *mrq) | |
443 | { | |
444 | struct mmc_data *data = mrq->data; | |
445 | long time; | |
446 | u32 blocksize, i, *p = sg_virt(data->sg); | |
447 | ||
fdc50a94 YG |
448 | /* buf read enable */ |
449 | sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); | |
aa0787a9 GL |
450 | time = wait_for_completion_interruptible_timeout(&host->intr_wait, |
451 | host->timeout); | |
452 | if (time <= 0 || host->sd_error) | |
fdc50a94 YG |
453 | return sh_mmcif_error_manage(host); |
454 | ||
fdc50a94 | 455 | blocksize = (BLOCK_SIZE_MASK & |
487d9fc5 | 456 | sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET)) + 3; |
fdc50a94 | 457 | for (i = 0; i < blocksize / 4; i++) |
487d9fc5 | 458 | *p++ = sh_mmcif_readl(host->addr, MMCIF_CE_DATA); |
fdc50a94 YG |
459 | |
460 | /* buffer read end */ | |
461 | sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFRE); | |
aa0787a9 GL |
462 | time = wait_for_completion_interruptible_timeout(&host->intr_wait, |
463 | host->timeout); | |
464 | if (time <= 0 || host->sd_error) | |
fdc50a94 YG |
465 | return sh_mmcif_error_manage(host); |
466 | ||
fdc50a94 YG |
467 | return 0; |
468 | } | |
469 | ||
470 | static int sh_mmcif_multi_read(struct sh_mmcif_host *host, | |
471 | struct mmc_request *mrq) | |
472 | { | |
473 | struct mmc_data *data = mrq->data; | |
474 | long time; | |
475 | u32 blocksize, i, j, sec, *p; | |
476 | ||
487d9fc5 MD |
477 | blocksize = BLOCK_SIZE_MASK & sh_mmcif_readl(host->addr, |
478 | MMCIF_CE_BLOCK_SET); | |
fdc50a94 YG |
479 | for (j = 0; j < data->sg_len; j++) { |
480 | p = sg_virt(data->sg); | |
fdc50a94 YG |
481 | for (sec = 0; sec < data->sg->length / blocksize; sec++) { |
482 | sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); | |
483 | /* buf read enable */ | |
aa0787a9 GL |
484 | time = wait_for_completion_interruptible_timeout(&host->intr_wait, |
485 | host->timeout); | |
fdc50a94 | 486 | |
aa0787a9 | 487 | if (time <= 0 || host->sd_error) |
fdc50a94 YG |
488 | return sh_mmcif_error_manage(host); |
489 | ||
fdc50a94 | 490 | for (i = 0; i < blocksize / 4; i++) |
487d9fc5 MD |
491 | *p++ = sh_mmcif_readl(host->addr, |
492 | MMCIF_CE_DATA); | |
fdc50a94 YG |
493 | } |
494 | if (j < data->sg_len - 1) | |
495 | data->sg++; | |
496 | } | |
497 | return 0; | |
498 | } | |
499 | ||
500 | static int sh_mmcif_single_write(struct sh_mmcif_host *host, | |
501 | struct mmc_request *mrq) | |
502 | { | |
503 | struct mmc_data *data = mrq->data; | |
504 | long time; | |
505 | u32 blocksize, i, *p = sg_virt(data->sg); | |
506 | ||
fdc50a94 YG |
507 | sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); |
508 | ||
509 | /* buf write enable */ | |
aa0787a9 GL |
510 | time = wait_for_completion_interruptible_timeout(&host->intr_wait, |
511 | host->timeout); | |
512 | if (time <= 0 || host->sd_error) | |
fdc50a94 YG |
513 | return sh_mmcif_error_manage(host); |
514 | ||
fdc50a94 | 515 | blocksize = (BLOCK_SIZE_MASK & |
487d9fc5 | 516 | sh_mmcif_readl(host->addr, MMCIF_CE_BLOCK_SET)) + 3; |
fdc50a94 | 517 | for (i = 0; i < blocksize / 4; i++) |
487d9fc5 | 518 | sh_mmcif_writel(host->addr, MMCIF_CE_DATA, *p++); |
fdc50a94 YG |
519 | |
520 | /* buffer write end */ | |
521 | sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MDTRANE); | |
522 | ||
aa0787a9 GL |
523 | time = wait_for_completion_interruptible_timeout(&host->intr_wait, |
524 | host->timeout); | |
525 | if (time <= 0 || host->sd_error) | |
fdc50a94 YG |
526 | return sh_mmcif_error_manage(host); |
527 | ||
fdc50a94 YG |
528 | return 0; |
529 | } | |
530 | ||
531 | static int sh_mmcif_multi_write(struct sh_mmcif_host *host, | |
532 | struct mmc_request *mrq) | |
533 | { | |
534 | struct mmc_data *data = mrq->data; | |
535 | long time; | |
536 | u32 i, sec, j, blocksize, *p; | |
537 | ||
487d9fc5 MD |
538 | blocksize = BLOCK_SIZE_MASK & sh_mmcif_readl(host->addr, |
539 | MMCIF_CE_BLOCK_SET); | |
fdc50a94 YG |
540 | |
541 | for (j = 0; j < data->sg_len; j++) { | |
542 | p = sg_virt(data->sg); | |
fdc50a94 YG |
543 | for (sec = 0; sec < data->sg->length / blocksize; sec++) { |
544 | sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); | |
545 | /* buf write enable*/ | |
aa0787a9 GL |
546 | time = wait_for_completion_interruptible_timeout(&host->intr_wait, |
547 | host->timeout); | |
fdc50a94 | 548 | |
aa0787a9 | 549 | if (time <= 0 || host->sd_error) |
fdc50a94 YG |
550 | return sh_mmcif_error_manage(host); |
551 | ||
fdc50a94 | 552 | for (i = 0; i < blocksize / 4; i++) |
487d9fc5 MD |
553 | sh_mmcif_writel(host->addr, |
554 | MMCIF_CE_DATA, *p++); | |
fdc50a94 YG |
555 | } |
556 | if (j < data->sg_len - 1) | |
557 | data->sg++; | |
558 | } | |
559 | return 0; | |
560 | } | |
561 | ||
562 | static void sh_mmcif_get_response(struct sh_mmcif_host *host, | |
563 | struct mmc_command *cmd) | |
564 | { | |
565 | if (cmd->flags & MMC_RSP_136) { | |
487d9fc5 MD |
566 | cmd->resp[0] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP3); |
567 | cmd->resp[1] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP2); | |
568 | cmd->resp[2] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP1); | |
569 | cmd->resp[3] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP0); | |
fdc50a94 | 570 | } else |
487d9fc5 | 571 | cmd->resp[0] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP0); |
fdc50a94 YG |
572 | } |
573 | ||
574 | static void sh_mmcif_get_cmd12response(struct sh_mmcif_host *host, | |
575 | struct mmc_command *cmd) | |
576 | { | |
487d9fc5 | 577 | cmd->resp[0] = sh_mmcif_readl(host->addr, MMCIF_CE_RESP_CMD12); |
fdc50a94 YG |
578 | } |
579 | ||
580 | static u32 sh_mmcif_set_cmd(struct sh_mmcif_host *host, | |
581 | struct mmc_request *mrq, struct mmc_command *cmd, u32 opc) | |
582 | { | |
583 | u32 tmp = 0; | |
584 | ||
585 | /* Response Type check */ | |
586 | switch (mmc_resp_type(cmd)) { | |
587 | case MMC_RSP_NONE: | |
588 | tmp |= CMD_SET_RTYP_NO; | |
589 | break; | |
590 | case MMC_RSP_R1: | |
591 | case MMC_RSP_R1B: | |
592 | case MMC_RSP_R3: | |
593 | tmp |= CMD_SET_RTYP_6B; | |
594 | break; | |
595 | case MMC_RSP_R2: | |
596 | tmp |= CMD_SET_RTYP_17B; | |
597 | break; | |
598 | default: | |
e47bf32a | 599 | dev_err(&host->pd->dev, "Unsupported response type.\n"); |
fdc50a94 YG |
600 | break; |
601 | } | |
602 | switch (opc) { | |
603 | /* RBSY */ | |
604 | case MMC_SWITCH: | |
605 | case MMC_STOP_TRANSMISSION: | |
606 | case MMC_SET_WRITE_PROT: | |
607 | case MMC_CLR_WRITE_PROT: | |
608 | case MMC_ERASE: | |
609 | case MMC_GEN_CMD: | |
610 | tmp |= CMD_SET_RBSY; | |
611 | break; | |
612 | } | |
613 | /* WDAT / DATW */ | |
614 | if (host->data) { | |
615 | tmp |= CMD_SET_WDAT; | |
616 | switch (host->bus_width) { | |
617 | case MMC_BUS_WIDTH_1: | |
618 | tmp |= CMD_SET_DATW_1; | |
619 | break; | |
620 | case MMC_BUS_WIDTH_4: | |
621 | tmp |= CMD_SET_DATW_4; | |
622 | break; | |
623 | case MMC_BUS_WIDTH_8: | |
624 | tmp |= CMD_SET_DATW_8; | |
625 | break; | |
626 | default: | |
e47bf32a | 627 | dev_err(&host->pd->dev, "Unsupported bus width.\n"); |
fdc50a94 YG |
628 | break; |
629 | } | |
630 | } | |
631 | /* DWEN */ | |
632 | if (opc == MMC_WRITE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK) | |
633 | tmp |= CMD_SET_DWEN; | |
634 | /* CMLTE/CMD12EN */ | |
635 | if (opc == MMC_READ_MULTIPLE_BLOCK || opc == MMC_WRITE_MULTIPLE_BLOCK) { | |
636 | tmp |= CMD_SET_CMLTE | CMD_SET_CMD12EN; | |
637 | sh_mmcif_bitset(host, MMCIF_CE_BLOCK_SET, | |
638 | mrq->data->blocks << 16); | |
639 | } | |
640 | /* RIDXC[1:0] check bits */ | |
641 | if (opc == MMC_SEND_OP_COND || opc == MMC_ALL_SEND_CID || | |
642 | opc == MMC_SEND_CSD || opc == MMC_SEND_CID) | |
643 | tmp |= CMD_SET_RIDXC_BITS; | |
644 | /* RCRC7C[1:0] check bits */ | |
645 | if (opc == MMC_SEND_OP_COND) | |
646 | tmp |= CMD_SET_CRC7C_BITS; | |
647 | /* RCRC7C[1:0] internal CRC7 */ | |
648 | if (opc == MMC_ALL_SEND_CID || | |
649 | opc == MMC_SEND_CSD || opc == MMC_SEND_CID) | |
650 | tmp |= CMD_SET_CRC7C_INTERNAL; | |
651 | ||
652 | return opc = ((opc << 24) | tmp); | |
653 | } | |
654 | ||
e47bf32a | 655 | static int sh_mmcif_data_trans(struct sh_mmcif_host *host, |
fdc50a94 YG |
656 | struct mmc_request *mrq, u32 opc) |
657 | { | |
e47bf32a | 658 | int ret; |
fdc50a94 YG |
659 | |
660 | switch (opc) { | |
661 | case MMC_READ_MULTIPLE_BLOCK: | |
662 | ret = sh_mmcif_multi_read(host, mrq); | |
663 | break; | |
664 | case MMC_WRITE_MULTIPLE_BLOCK: | |
665 | ret = sh_mmcif_multi_write(host, mrq); | |
666 | break; | |
667 | case MMC_WRITE_BLOCK: | |
668 | ret = sh_mmcif_single_write(host, mrq); | |
669 | break; | |
670 | case MMC_READ_SINGLE_BLOCK: | |
671 | case MMC_SEND_EXT_CSD: | |
672 | ret = sh_mmcif_single_read(host, mrq); | |
673 | break; | |
674 | default: | |
e47bf32a | 675 | dev_err(&host->pd->dev, "UNSUPPORTED CMD = d'%08d\n", opc); |
fdc50a94 YG |
676 | ret = -EINVAL; |
677 | break; | |
678 | } | |
679 | return ret; | |
680 | } | |
681 | ||
682 | static void sh_mmcif_start_cmd(struct sh_mmcif_host *host, | |
683 | struct mmc_request *mrq, struct mmc_command *cmd) | |
684 | { | |
685 | long time; | |
686 | int ret = 0, mask = 0; | |
687 | u32 opc = cmd->opcode; | |
688 | ||
fdc50a94 YG |
689 | switch (opc) { |
690 | /* respons busy check */ | |
691 | case MMC_SWITCH: | |
692 | case MMC_STOP_TRANSMISSION: | |
693 | case MMC_SET_WRITE_PROT: | |
694 | case MMC_CLR_WRITE_PROT: | |
695 | case MMC_ERASE: | |
696 | case MMC_GEN_CMD: | |
697 | mask = MASK_MRBSYE; | |
698 | break; | |
699 | default: | |
700 | mask = MASK_MCRSPE; | |
701 | break; | |
702 | } | |
703 | mask |= MASK_MCMDVIO | MASK_MBUFVIO | MASK_MWDATERR | | |
704 | MASK_MRDATERR | MASK_MRIDXERR | MASK_MRSPERR | | |
705 | MASK_MCCSTO | MASK_MCRCSTO | MASK_MWDATTO | | |
706 | MASK_MRDATTO | MASK_MRBSYTO | MASK_MRSPTO; | |
707 | ||
708 | if (host->data) { | |
487d9fc5 MD |
709 | sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET, 0); |
710 | sh_mmcif_writel(host->addr, MMCIF_CE_BLOCK_SET, | |
711 | mrq->data->blksz); | |
fdc50a94 YG |
712 | } |
713 | opc = sh_mmcif_set_cmd(host, mrq, cmd, opc); | |
714 | ||
487d9fc5 MD |
715 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, 0xD80430C0); |
716 | sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, mask); | |
fdc50a94 | 717 | /* set arg */ |
487d9fc5 | 718 | sh_mmcif_writel(host->addr, MMCIF_CE_ARG, cmd->arg); |
fdc50a94 | 719 | /* set cmd */ |
487d9fc5 | 720 | sh_mmcif_writel(host->addr, MMCIF_CE_CMD_SET, opc); |
fdc50a94 | 721 | |
aa0787a9 GL |
722 | time = wait_for_completion_interruptible_timeout(&host->intr_wait, |
723 | host->timeout); | |
724 | if (time <= 0) { | |
fdc50a94 YG |
725 | cmd->error = sh_mmcif_error_manage(host); |
726 | return; | |
727 | } | |
728 | if (host->sd_error) { | |
729 | switch (cmd->opcode) { | |
730 | case MMC_ALL_SEND_CID: | |
731 | case MMC_SELECT_CARD: | |
732 | case MMC_APP_CMD: | |
733 | cmd->error = -ETIMEDOUT; | |
734 | break; | |
735 | default: | |
e47bf32a GL |
736 | dev_dbg(&host->pd->dev, "Cmd(d'%d) err\n", |
737 | cmd->opcode); | |
fdc50a94 YG |
738 | cmd->error = sh_mmcif_error_manage(host); |
739 | break; | |
740 | } | |
aa0787a9 | 741 | host->sd_error = false; |
fdc50a94 YG |
742 | return; |
743 | } | |
744 | if (!(cmd->flags & MMC_RSP_PRESENT)) { | |
e47bf32a | 745 | cmd->error = 0; |
fdc50a94 YG |
746 | return; |
747 | } | |
aa0787a9 | 748 | sh_mmcif_get_response(host, cmd); |
fdc50a94 | 749 | if (host->data) { |
f38f94c6 | 750 | if (!host->dma_active) { |
a782d688 GL |
751 | ret = sh_mmcif_data_trans(host, mrq, cmd->opcode); |
752 | } else { | |
753 | long time = | |
754 | wait_for_completion_interruptible_timeout(&host->dma_complete, | |
755 | host->timeout); | |
756 | if (!time) | |
757 | ret = -ETIMEDOUT; | |
758 | else if (time < 0) | |
759 | ret = time; | |
760 | sh_mmcif_bitclr(host, MMCIF_CE_BUF_ACC, | |
761 | BUF_ACC_DMAREN | BUF_ACC_DMAWEN); | |
f38f94c6 | 762 | host->dma_active = false; |
a782d688 | 763 | } |
fdc50a94 YG |
764 | if (ret < 0) |
765 | mrq->data->bytes_xfered = 0; | |
766 | else | |
767 | mrq->data->bytes_xfered = | |
768 | mrq->data->blocks * mrq->data->blksz; | |
769 | } | |
770 | cmd->error = ret; | |
771 | } | |
772 | ||
773 | static void sh_mmcif_stop_cmd(struct sh_mmcif_host *host, | |
774 | struct mmc_request *mrq, struct mmc_command *cmd) | |
775 | { | |
776 | long time; | |
777 | ||
778 | if (mrq->cmd->opcode == MMC_READ_MULTIPLE_BLOCK) | |
779 | sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE); | |
780 | else if (mrq->cmd->opcode == MMC_WRITE_MULTIPLE_BLOCK) | |
781 | sh_mmcif_bitset(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE); | |
782 | else { | |
e47bf32a | 783 | dev_err(&host->pd->dev, "unsupported stop cmd\n"); |
fdc50a94 YG |
784 | cmd->error = sh_mmcif_error_manage(host); |
785 | return; | |
786 | } | |
787 | ||
aa0787a9 GL |
788 | time = wait_for_completion_interruptible_timeout(&host->intr_wait, |
789 | host->timeout); | |
790 | if (time <= 0 || host->sd_error) { | |
fdc50a94 YG |
791 | cmd->error = sh_mmcif_error_manage(host); |
792 | return; | |
793 | } | |
794 | sh_mmcif_get_cmd12response(host, cmd); | |
fdc50a94 YG |
795 | cmd->error = 0; |
796 | } | |
797 | ||
798 | static void sh_mmcif_request(struct mmc_host *mmc, struct mmc_request *mrq) | |
799 | { | |
800 | struct sh_mmcif_host *host = mmc_priv(mmc); | |
801 | ||
802 | switch (mrq->cmd->opcode) { | |
803 | /* MMCIF does not support SD/SDIO command */ | |
804 | case SD_IO_SEND_OP_COND: | |
805 | case MMC_APP_CMD: | |
806 | mrq->cmd->error = -ETIMEDOUT; | |
807 | mmc_request_done(mmc, mrq); | |
808 | return; | |
809 | case MMC_SEND_EXT_CSD: /* = SD_SEND_IF_COND (8) */ | |
810 | if (!mrq->data) { | |
811 | /* send_if_cond cmd (not support) */ | |
812 | mrq->cmd->error = -ETIMEDOUT; | |
813 | mmc_request_done(mmc, mrq); | |
814 | return; | |
815 | } | |
816 | break; | |
817 | default: | |
818 | break; | |
819 | } | |
820 | host->data = mrq->data; | |
a782d688 GL |
821 | if (mrq->data) { |
822 | if (mrq->data->flags & MMC_DATA_READ) { | |
823 | if (host->chan_rx) | |
824 | sh_mmcif_start_dma_rx(host); | |
825 | } else { | |
826 | if (host->chan_tx) | |
827 | sh_mmcif_start_dma_tx(host); | |
828 | } | |
829 | } | |
fdc50a94 YG |
830 | sh_mmcif_start_cmd(host, mrq, mrq->cmd); |
831 | host->data = NULL; | |
832 | ||
833 | if (mrq->cmd->error != 0) { | |
834 | mmc_request_done(mmc, mrq); | |
835 | return; | |
836 | } | |
837 | if (mrq->stop) | |
838 | sh_mmcif_stop_cmd(host, mrq, mrq->stop); | |
839 | mmc_request_done(mmc, mrq); | |
840 | } | |
841 | ||
842 | static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) | |
843 | { | |
844 | struct sh_mmcif_host *host = mmc_priv(mmc); | |
845 | struct sh_mmcif_plat_data *p = host->pd->dev.platform_data; | |
846 | ||
f5e0cec4 GL |
847 | if (ios->power_mode == MMC_POWER_UP) { |
848 | if (p->set_pwr) | |
849 | p->set_pwr(host->pd, ios->power_mode); | |
850 | } else if (ios->power_mode == MMC_POWER_OFF || !ios->clock) { | |
fdc50a94 YG |
851 | /* clock stop */ |
852 | sh_mmcif_clock_control(host, 0); | |
f5e0cec4 | 853 | if (ios->power_mode == MMC_POWER_OFF && p->down_pwr) |
fdc50a94 YG |
854 | p->down_pwr(host->pd); |
855 | return; | |
fdc50a94 YG |
856 | } |
857 | ||
858 | if (ios->clock) | |
859 | sh_mmcif_clock_control(host, ios->clock); | |
860 | ||
861 | host->bus_width = ios->bus_width; | |
862 | } | |
863 | ||
777271d0 AH |
864 | static int sh_mmcif_get_cd(struct mmc_host *mmc) |
865 | { | |
866 | struct sh_mmcif_host *host = mmc_priv(mmc); | |
867 | struct sh_mmcif_plat_data *p = host->pd->dev.platform_data; | |
868 | ||
869 | if (!p->get_cd) | |
870 | return -ENOSYS; | |
871 | else | |
872 | return p->get_cd(host->pd); | |
873 | } | |
874 | ||
fdc50a94 YG |
875 | static struct mmc_host_ops sh_mmcif_ops = { |
876 | .request = sh_mmcif_request, | |
877 | .set_ios = sh_mmcif_set_ios, | |
777271d0 | 878 | .get_cd = sh_mmcif_get_cd, |
fdc50a94 YG |
879 | }; |
880 | ||
881 | static void sh_mmcif_detect(struct mmc_host *mmc) | |
882 | { | |
883 | mmc_detect_change(mmc, 0); | |
884 | } | |
885 | ||
886 | static irqreturn_t sh_mmcif_intr(int irq, void *dev_id) | |
887 | { | |
888 | struct sh_mmcif_host *host = dev_id; | |
aa0787a9 | 889 | u32 state; |
fdc50a94 YG |
890 | int err = 0; |
891 | ||
487d9fc5 | 892 | state = sh_mmcif_readl(host->addr, MMCIF_CE_INT); |
fdc50a94 YG |
893 | |
894 | if (state & INT_RBSYE) { | |
487d9fc5 MD |
895 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, |
896 | ~(INT_RBSYE | INT_CRSPE)); | |
fdc50a94 YG |
897 | sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MRBSYE); |
898 | } else if (state & INT_CRSPE) { | |
487d9fc5 | 899 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_CRSPE); |
fdc50a94 YG |
900 | sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCRSPE); |
901 | } else if (state & INT_BUFREN) { | |
487d9fc5 | 902 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFREN); |
fdc50a94 YG |
903 | sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFREN); |
904 | } else if (state & INT_BUFWEN) { | |
487d9fc5 | 905 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFWEN); |
fdc50a94 YG |
906 | sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFWEN); |
907 | } else if (state & INT_CMD12DRE) { | |
487d9fc5 | 908 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, |
fdc50a94 YG |
909 | ~(INT_CMD12DRE | INT_CMD12RBE | |
910 | INT_CMD12CRE | INT_BUFRE)); | |
911 | sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12DRE); | |
912 | } else if (state & INT_BUFRE) { | |
487d9fc5 | 913 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_BUFRE); |
fdc50a94 YG |
914 | sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MBUFRE); |
915 | } else if (state & INT_DTRANE) { | |
487d9fc5 | 916 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~INT_DTRANE); |
fdc50a94 YG |
917 | sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MDTRANE); |
918 | } else if (state & INT_CMD12RBE) { | |
487d9fc5 | 919 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, |
fdc50a94 YG |
920 | ~(INT_CMD12RBE | INT_CMD12CRE)); |
921 | sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, MASK_MCMD12RBE); | |
922 | } else if (state & INT_ERR_STS) { | |
923 | /* err interrupts */ | |
487d9fc5 | 924 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); |
fdc50a94 YG |
925 | sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state); |
926 | err = 1; | |
927 | } else { | |
e47bf32a | 928 | dev_dbg(&host->pd->dev, "Not support int\n"); |
487d9fc5 | 929 | sh_mmcif_writel(host->addr, MMCIF_CE_INT, ~state); |
fdc50a94 YG |
930 | sh_mmcif_bitclr(host, MMCIF_CE_INT_MASK, state); |
931 | err = 1; | |
932 | } | |
933 | if (err) { | |
aa0787a9 | 934 | host->sd_error = true; |
e47bf32a | 935 | dev_dbg(&host->pd->dev, "int err state = %08x\n", state); |
fdc50a94 | 936 | } |
aa0787a9 GL |
937 | if (state & ~(INT_CMD12RBE | INT_CMD12CRE)) |
938 | complete(&host->intr_wait); | |
939 | else | |
940 | dev_dbg(&host->pd->dev, "Unexpected IRQ 0x%x\n", state); | |
fdc50a94 YG |
941 | |
942 | return IRQ_HANDLED; | |
943 | } | |
944 | ||
945 | static int __devinit sh_mmcif_probe(struct platform_device *pdev) | |
946 | { | |
947 | int ret = 0, irq[2]; | |
948 | struct mmc_host *mmc; | |
e47bf32a GL |
949 | struct sh_mmcif_host *host; |
950 | struct sh_mmcif_plat_data *pd; | |
fdc50a94 YG |
951 | struct resource *res; |
952 | void __iomem *reg; | |
953 | char clk_name[8]; | |
954 | ||
955 | irq[0] = platform_get_irq(pdev, 0); | |
956 | irq[1] = platform_get_irq(pdev, 1); | |
957 | if (irq[0] < 0 || irq[1] < 0) { | |
e47bf32a | 958 | dev_err(&pdev->dev, "Get irq error\n"); |
fdc50a94 YG |
959 | return -ENXIO; |
960 | } | |
961 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
962 | if (!res) { | |
963 | dev_err(&pdev->dev, "platform_get_resource error.\n"); | |
964 | return -ENXIO; | |
965 | } | |
966 | reg = ioremap(res->start, resource_size(res)); | |
967 | if (!reg) { | |
968 | dev_err(&pdev->dev, "ioremap error.\n"); | |
969 | return -ENOMEM; | |
970 | } | |
e47bf32a | 971 | pd = pdev->dev.platform_data; |
fdc50a94 YG |
972 | if (!pd) { |
973 | dev_err(&pdev->dev, "sh_mmcif plat data error.\n"); | |
974 | ret = -ENXIO; | |
975 | goto clean_up; | |
976 | } | |
977 | mmc = mmc_alloc_host(sizeof(struct sh_mmcif_host), &pdev->dev); | |
978 | if (!mmc) { | |
979 | ret = -ENOMEM; | |
980 | goto clean_up; | |
981 | } | |
982 | host = mmc_priv(mmc); | |
983 | host->mmc = mmc; | |
984 | host->addr = reg; | |
985 | host->timeout = 1000; | |
986 | ||
987 | snprintf(clk_name, sizeof(clk_name), "mmc%d", pdev->id); | |
988 | host->hclk = clk_get(&pdev->dev, clk_name); | |
989 | if (IS_ERR(host->hclk)) { | |
990 | dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name); | |
991 | ret = PTR_ERR(host->hclk); | |
992 | goto clean_up1; | |
993 | } | |
994 | clk_enable(host->hclk); | |
995 | host->clk = clk_get_rate(host->hclk); | |
996 | host->pd = pdev; | |
997 | ||
aa0787a9 | 998 | init_completion(&host->intr_wait); |
fdc50a94 YG |
999 | |
1000 | mmc->ops = &sh_mmcif_ops; | |
1001 | mmc->f_max = host->clk; | |
1002 | /* close to 400KHz */ | |
1003 | if (mmc->f_max < 51200000) | |
1004 | mmc->f_min = mmc->f_max / 128; | |
1005 | else if (mmc->f_max < 102400000) | |
1006 | mmc->f_min = mmc->f_max / 256; | |
1007 | else | |
1008 | mmc->f_min = mmc->f_max / 512; | |
1009 | if (pd->ocr) | |
1010 | mmc->ocr_avail = pd->ocr; | |
1011 | mmc->caps = MMC_CAP_MMC_HIGHSPEED; | |
1012 | if (pd->caps) | |
1013 | mmc->caps |= pd->caps; | |
a782d688 | 1014 | mmc->max_segs = 32; |
fdc50a94 | 1015 | mmc->max_blk_size = 512; |
a782d688 GL |
1016 | mmc->max_req_size = PAGE_CACHE_SIZE * mmc->max_segs; |
1017 | mmc->max_blk_count = mmc->max_req_size / mmc->max_blk_size; | |
fdc50a94 YG |
1018 | mmc->max_seg_size = mmc->max_req_size; |
1019 | ||
1020 | sh_mmcif_sync_reset(host); | |
1021 | platform_set_drvdata(pdev, host); | |
a782d688 GL |
1022 | |
1023 | /* See if we also get DMA */ | |
1024 | sh_mmcif_request_dma(host, pd); | |
1025 | ||
fdc50a94 YG |
1026 | mmc_add_host(mmc); |
1027 | ||
1028 | ret = request_irq(irq[0], sh_mmcif_intr, 0, "sh_mmc:error", host); | |
1029 | if (ret) { | |
e47bf32a | 1030 | dev_err(&pdev->dev, "request_irq error (sh_mmc:error)\n"); |
fdc50a94 YG |
1031 | goto clean_up2; |
1032 | } | |
1033 | ret = request_irq(irq[1], sh_mmcif_intr, 0, "sh_mmc:int", host); | |
1034 | if (ret) { | |
1035 | free_irq(irq[0], host); | |
e47bf32a | 1036 | dev_err(&pdev->dev, "request_irq error (sh_mmc:int)\n"); |
fdc50a94 YG |
1037 | goto clean_up2; |
1038 | } | |
1039 | ||
487d9fc5 | 1040 | sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL); |
fdc50a94 YG |
1041 | sh_mmcif_detect(host->mmc); |
1042 | ||
e47bf32a GL |
1043 | dev_info(&pdev->dev, "driver version %s\n", DRIVER_VERSION); |
1044 | dev_dbg(&pdev->dev, "chip ver H'%04x\n", | |
487d9fc5 | 1045 | sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0x0000ffff); |
fdc50a94 YG |
1046 | return ret; |
1047 | ||
1048 | clean_up2: | |
1049 | clk_disable(host->hclk); | |
1050 | clean_up1: | |
1051 | mmc_free_host(mmc); | |
1052 | clean_up: | |
1053 | if (reg) | |
1054 | iounmap(reg); | |
1055 | return ret; | |
1056 | } | |
1057 | ||
1058 | static int __devexit sh_mmcif_remove(struct platform_device *pdev) | |
1059 | { | |
1060 | struct sh_mmcif_host *host = platform_get_drvdata(pdev); | |
1061 | int irq[2]; | |
1062 | ||
aa0787a9 | 1063 | mmc_remove_host(host->mmc); |
a782d688 | 1064 | sh_mmcif_release_dma(host); |
fdc50a94 YG |
1065 | |
1066 | if (host->addr) | |
1067 | iounmap(host->addr); | |
1068 | ||
aa0787a9 GL |
1069 | sh_mmcif_writel(host->addr, MMCIF_CE_INT_MASK, MASK_ALL); |
1070 | ||
1071 | irq[0] = platform_get_irq(pdev, 0); | |
1072 | irq[1] = platform_get_irq(pdev, 1); | |
fdc50a94 YG |
1073 | |
1074 | free_irq(irq[0], host); | |
1075 | free_irq(irq[1], host); | |
1076 | ||
aa0787a9 GL |
1077 | platform_set_drvdata(pdev, NULL); |
1078 | ||
fdc50a94 YG |
1079 | clk_disable(host->hclk); |
1080 | mmc_free_host(host->mmc); | |
1081 | ||
1082 | return 0; | |
1083 | } | |
1084 | ||
1085 | static struct platform_driver sh_mmcif_driver = { | |
1086 | .probe = sh_mmcif_probe, | |
1087 | .remove = sh_mmcif_remove, | |
1088 | .driver = { | |
1089 | .name = DRIVER_NAME, | |
1090 | }, | |
1091 | }; | |
1092 | ||
1093 | static int __init sh_mmcif_init(void) | |
1094 | { | |
1095 | return platform_driver_register(&sh_mmcif_driver); | |
1096 | } | |
1097 | ||
1098 | static void __exit sh_mmcif_exit(void) | |
1099 | { | |
1100 | platform_driver_unregister(&sh_mmcif_driver); | |
1101 | } | |
1102 | ||
1103 | module_init(sh_mmcif_init); | |
1104 | module_exit(sh_mmcif_exit); | |
1105 | ||
1106 | ||
1107 | MODULE_DESCRIPTION("SuperH on-chip MMC/eMMC interface driver"); | |
1108 | MODULE_LICENSE("GPL"); | |
aa0787a9 | 1109 | MODULE_ALIAS("platform:" DRIVER_NAME); |
fdc50a94 | 1110 | MODULE_AUTHOR("Yusuke Goda <yusuke.goda.sx@renesas.com>"); |