Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 1 | /* |
| 2 | * tifm_sd.c - TI FlashMedia driver |
| 3 | * |
| 4 | * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License version 2 as |
| 8 | * published by the Free Software Foundation. |
| 9 | * |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 10 | * Special thanks to Brad Campbell for extensive testing of this driver. |
| 11 | * |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 12 | */ |
| 13 | |
| 14 | |
| 15 | #include <linux/tifm.h> |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 16 | #include <linux/mmc/host.h> |
| 17 | #include <linux/highmem.h> |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 18 | #include <linux/scatterlist.h> |
Al Viro | 2099c99 | 2006-10-24 11:17:06 +0100 | [diff] [blame] | 19 | #include <asm/io.h> |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 20 | |
| 21 | #define DRIVER_NAME "tifm_sd" |
Alex Dubov | 4552f0c | 2007-04-12 16:59:12 +1000 | [diff] [blame] | 22 | #define DRIVER_VERSION "0.8" |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 23 | |
| 24 | static int no_dma = 0; |
| 25 | static int fixed_timeout = 0; |
| 26 | module_param(no_dma, bool, 0644); |
| 27 | module_param(fixed_timeout, bool, 0644); |
| 28 | |
| 29 | /* Constants here are mostly from OMAP5912 datasheet */ |
| 30 | #define TIFM_MMCSD_RESET 0x0002 |
| 31 | #define TIFM_MMCSD_CLKMASK 0x03ff |
| 32 | #define TIFM_MMCSD_POWER 0x0800 |
| 33 | #define TIFM_MMCSD_4BBUS 0x8000 |
| 34 | #define TIFM_MMCSD_RXDE 0x8000 /* rx dma enable */ |
| 35 | #define TIFM_MMCSD_TXDE 0x0080 /* tx dma enable */ |
| 36 | #define TIFM_MMCSD_BUFINT 0x0c00 /* set bits: AE, AF */ |
| 37 | #define TIFM_MMCSD_DPE 0x0020 /* data timeout counted in kilocycles */ |
| 38 | #define TIFM_MMCSD_INAB 0x0080 /* abort / initialize command */ |
| 39 | #define TIFM_MMCSD_READ 0x8000 |
| 40 | |
Alex Dubov | 12c8345 | 2007-02-10 21:16:40 -0800 | [diff] [blame] | 41 | #define TIFM_MMCSD_ERRMASK 0x01e0 /* set bits: CCRC, CTO, DCRC, DTO */ |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 42 | #define TIFM_MMCSD_EOC 0x0001 /* end of command phase */ |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 43 | #define TIFM_MMCSD_CD 0x0002 /* card detect */ |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 44 | #define TIFM_MMCSD_CB 0x0004 /* card enter busy state */ |
| 45 | #define TIFM_MMCSD_BRS 0x0008 /* block received/sent */ |
| 46 | #define TIFM_MMCSD_EOFB 0x0010 /* card exit busy state */ |
| 47 | #define TIFM_MMCSD_DTO 0x0020 /* data time-out */ |
| 48 | #define TIFM_MMCSD_DCRC 0x0040 /* data crc error */ |
| 49 | #define TIFM_MMCSD_CTO 0x0080 /* command time-out */ |
| 50 | #define TIFM_MMCSD_CCRC 0x0100 /* command crc error */ |
| 51 | #define TIFM_MMCSD_AF 0x0400 /* fifo almost full */ |
| 52 | #define TIFM_MMCSD_AE 0x0800 /* fifo almost empty */ |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 53 | #define TIFM_MMCSD_OCRB 0x1000 /* OCR busy */ |
| 54 | #define TIFM_MMCSD_CIRQ 0x2000 /* card irq (cmd40/sdio) */ |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 55 | #define TIFM_MMCSD_CERR 0x4000 /* card status error */ |
| 56 | |
Alex Dubov | 0007d48 | 2007-04-12 16:59:23 +1000 | [diff] [blame] | 57 | #define TIFM_MMCSD_ODTO 0x0040 /* open drain / extended timeout */ |
| 58 | #define TIFM_MMCSD_CARD_RO 0x0200 /* card is read-only */ |
| 59 | |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 60 | #define TIFM_MMCSD_FIFO_SIZE 0x0020 |
| 61 | |
| 62 | #define TIFM_MMCSD_RSP_R0 0x0000 |
| 63 | #define TIFM_MMCSD_RSP_R1 0x0100 |
| 64 | #define TIFM_MMCSD_RSP_R2 0x0200 |
| 65 | #define TIFM_MMCSD_RSP_R3 0x0300 |
| 66 | #define TIFM_MMCSD_RSP_R4 0x0400 |
| 67 | #define TIFM_MMCSD_RSP_R5 0x0500 |
| 68 | #define TIFM_MMCSD_RSP_R6 0x0600 |
| 69 | |
| 70 | #define TIFM_MMCSD_RSP_BUSY 0x0800 |
| 71 | |
| 72 | #define TIFM_MMCSD_CMD_BC 0x0000 |
| 73 | #define TIFM_MMCSD_CMD_BCR 0x1000 |
| 74 | #define TIFM_MMCSD_CMD_AC 0x2000 |
| 75 | #define TIFM_MMCSD_CMD_ADTC 0x3000 |
| 76 | |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 77 | #define TIFM_MMCSD_MAX_BLOCK_SIZE 0x0800UL |
| 78 | |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 79 | enum { |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 80 | CMD_READY = 0x0001, |
| 81 | FIFO_READY = 0x0002, |
| 82 | BRS_READY = 0x0004, |
| 83 | SCMD_ACTIVE = 0x0008, |
| 84 | SCMD_READY = 0x0010, |
| 85 | CARD_BUSY = 0x0020, |
| 86 | DATA_CARRY = 0x0040 |
Alex Dubov | 0007d48 | 2007-04-12 16:59:23 +1000 | [diff] [blame] | 87 | }; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 88 | |
| 89 | struct tifm_sd { |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 90 | struct tifm_dev *dev; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 91 | |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 92 | unsigned short eject:1, |
| 93 | open_drain:1, |
| 94 | no_dma:1; |
| 95 | unsigned short cmd_flags; |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 96 | |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 97 | unsigned int clk_freq; |
| 98 | unsigned int clk_div; |
| 99 | unsigned long timeout_jiffies; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 100 | |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 101 | struct tasklet_struct finish_tasklet; |
Alex Dubov | 0803dd0 | 2006-12-08 16:50:49 +1100 | [diff] [blame] | 102 | struct timer_list timer; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 103 | struct mmc_request *req; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 104 | |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 105 | int sg_len; |
| 106 | int sg_pos; |
| 107 | unsigned int block_pos; |
| 108 | struct scatterlist bounce_buf; |
| 109 | unsigned char bounce_buf_data[TIFM_MMCSD_MAX_BLOCK_SIZE]; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 110 | }; |
| 111 | |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 112 | /* for some reason, host won't respond correctly to readw/writew */ |
| 113 | static void tifm_sd_read_fifo(struct tifm_sd *host, struct page *pg, |
| 114 | unsigned int off, unsigned int cnt) |
Alex Dubov | 255ef22 | 2006-12-08 16:50:48 +1100 | [diff] [blame] | 115 | { |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 116 | struct tifm_dev *sock = host->dev; |
| 117 | unsigned char *buf; |
| 118 | unsigned int pos = 0, val; |
| 119 | |
| 120 | buf = kmap_atomic(pg, KM_BIO_DST_IRQ) + off; |
| 121 | if (host->cmd_flags & DATA_CARRY) { |
| 122 | buf[pos++] = host->bounce_buf_data[0]; |
| 123 | host->cmd_flags &= ~DATA_CARRY; |
| 124 | } |
| 125 | |
| 126 | while (pos < cnt) { |
| 127 | val = readl(sock->addr + SOCK_MMCSD_DATA); |
| 128 | buf[pos++] = val & 0xff; |
| 129 | if (pos == cnt) { |
| 130 | host->bounce_buf_data[0] = (val >> 8) & 0xff; |
| 131 | host->cmd_flags |= DATA_CARRY; |
| 132 | break; |
| 133 | } |
| 134 | buf[pos++] = (val >> 8) & 0xff; |
| 135 | } |
| 136 | kunmap_atomic(buf - off, KM_BIO_DST_IRQ); |
Alex Dubov | 255ef22 | 2006-12-08 16:50:48 +1100 | [diff] [blame] | 137 | } |
| 138 | |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 139 | static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg, |
| 140 | unsigned int off, unsigned int cnt) |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 141 | { |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 142 | struct tifm_dev *sock = host->dev; |
| 143 | unsigned char *buf; |
| 144 | unsigned int pos = 0, val; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 145 | |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 146 | buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + off; |
| 147 | if (host->cmd_flags & DATA_CARRY) { |
| 148 | val = host->bounce_buf_data[0] | ((buf[pos++] << 8) & 0xff00); |
| 149 | writel(val, sock->addr + SOCK_MMCSD_DATA); |
| 150 | host->cmd_flags &= ~DATA_CARRY; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 151 | } |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 152 | |
| 153 | while (pos < cnt) { |
| 154 | val = buf[pos++]; |
| 155 | if (pos == cnt) { |
| 156 | host->bounce_buf_data[0] = val & 0xff; |
| 157 | host->cmd_flags |= DATA_CARRY; |
| 158 | break; |
| 159 | } |
| 160 | val |= (buf[pos++] << 8) & 0xff00; |
| 161 | writel(val, sock->addr + SOCK_MMCSD_DATA); |
| 162 | } |
| 163 | kunmap_atomic(buf - off, KM_BIO_SRC_IRQ); |
| 164 | } |
| 165 | |
| 166 | static void tifm_sd_transfer_data(struct tifm_sd *host) |
| 167 | { |
| 168 | struct mmc_data *r_data = host->req->cmd->data; |
| 169 | struct scatterlist *sg = r_data->sg; |
| 170 | unsigned int off, cnt, t_size = TIFM_MMCSD_FIFO_SIZE * 2; |
| 171 | unsigned int p_off, p_cnt; |
| 172 | struct page *pg; |
| 173 | |
| 174 | if (host->sg_pos == host->sg_len) |
| 175 | return; |
| 176 | while (t_size) { |
| 177 | cnt = sg[host->sg_pos].length - host->block_pos; |
| 178 | if (!cnt) { |
| 179 | host->block_pos = 0; |
| 180 | host->sg_pos++; |
| 181 | if (host->sg_pos == host->sg_len) { |
| 182 | if ((r_data->flags & MMC_DATA_WRITE) |
| 183 | && DATA_CARRY) |
| 184 | writel(host->bounce_buf_data[0], |
| 185 | host->dev->addr |
| 186 | + SOCK_MMCSD_DATA); |
| 187 | |
| 188 | return; |
| 189 | } |
| 190 | cnt = sg[host->sg_pos].length; |
| 191 | } |
| 192 | off = sg[host->sg_pos].offset + host->block_pos; |
| 193 | |
| 194 | pg = nth_page(sg[host->sg_pos].page, off >> PAGE_SHIFT); |
| 195 | p_off = offset_in_page(off); |
| 196 | p_cnt = PAGE_SIZE - p_off; |
| 197 | p_cnt = min(p_cnt, cnt); |
| 198 | p_cnt = min(p_cnt, t_size); |
| 199 | |
| 200 | if (r_data->flags & MMC_DATA_READ) |
| 201 | tifm_sd_read_fifo(host, pg, p_off, p_cnt); |
| 202 | else if (r_data->flags & MMC_DATA_WRITE) |
| 203 | tifm_sd_write_fifo(host, pg, p_off, p_cnt); |
| 204 | |
| 205 | t_size -= p_cnt; |
| 206 | host->block_pos += p_cnt; |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | static void tifm_sd_copy_page(struct page *dst, unsigned int dst_off, |
| 211 | struct page *src, unsigned int src_off, |
| 212 | unsigned int count) |
| 213 | { |
| 214 | unsigned char *src_buf = kmap_atomic(src, KM_BIO_SRC_IRQ) + src_off; |
| 215 | unsigned char *dst_buf = kmap_atomic(dst, KM_BIO_DST_IRQ) + dst_off; |
| 216 | |
| 217 | memcpy(dst_buf, src_buf, count); |
| 218 | |
| 219 | kunmap_atomic(dst_buf - dst_off, KM_BIO_DST_IRQ); |
| 220 | kunmap_atomic(src_buf - src_off, KM_BIO_SRC_IRQ); |
| 221 | } |
| 222 | |
| 223 | static void tifm_sd_bounce_block(struct tifm_sd *host, struct mmc_data *r_data) |
| 224 | { |
| 225 | struct scatterlist *sg = r_data->sg; |
| 226 | unsigned int t_size = r_data->blksz; |
| 227 | unsigned int off, cnt; |
| 228 | unsigned int p_off, p_cnt; |
| 229 | struct page *pg; |
| 230 | |
| 231 | dev_dbg(&host->dev->dev, "bouncing block\n"); |
| 232 | while (t_size) { |
| 233 | cnt = sg[host->sg_pos].length - host->block_pos; |
| 234 | if (!cnt) { |
| 235 | host->block_pos = 0; |
| 236 | host->sg_pos++; |
| 237 | if (host->sg_pos == host->sg_len) |
| 238 | return; |
| 239 | cnt = sg[host->sg_pos].length; |
| 240 | } |
| 241 | off = sg[host->sg_pos].offset + host->block_pos; |
| 242 | |
| 243 | pg = nth_page(sg[host->sg_pos].page, off >> PAGE_SHIFT); |
| 244 | p_off = offset_in_page(off); |
| 245 | p_cnt = PAGE_SIZE - p_off; |
| 246 | p_cnt = min(p_cnt, cnt); |
| 247 | p_cnt = min(p_cnt, t_size); |
| 248 | |
| 249 | if (r_data->flags & MMC_DATA_WRITE) |
| 250 | tifm_sd_copy_page(host->bounce_buf.page, |
| 251 | r_data->blksz - t_size, |
| 252 | pg, p_off, p_cnt); |
| 253 | else if (r_data->flags & MMC_DATA_READ) |
| 254 | tifm_sd_copy_page(pg, p_off, host->bounce_buf.page, |
| 255 | r_data->blksz - t_size, p_cnt); |
| 256 | |
| 257 | t_size -= p_cnt; |
| 258 | host->block_pos += p_cnt; |
| 259 | } |
| 260 | } |
| 261 | |
| 262 | int tifm_sd_set_dma_data(struct tifm_sd *host, struct mmc_data *r_data) |
| 263 | { |
| 264 | struct tifm_dev *sock = host->dev; |
| 265 | unsigned int t_size = TIFM_DMA_TSIZE * r_data->blksz; |
| 266 | unsigned int dma_len, dma_blk_cnt, dma_off; |
| 267 | struct scatterlist *sg = NULL; |
| 268 | unsigned long flags; |
| 269 | |
| 270 | if (host->sg_pos == host->sg_len) |
| 271 | return 1; |
| 272 | |
| 273 | if (host->cmd_flags & DATA_CARRY) { |
| 274 | host->cmd_flags &= ~DATA_CARRY; |
| 275 | local_irq_save(flags); |
| 276 | tifm_sd_bounce_block(host, r_data); |
| 277 | local_irq_restore(flags); |
| 278 | if (host->sg_pos == host->sg_len) |
| 279 | return 1; |
| 280 | } |
| 281 | |
| 282 | dma_len = sg_dma_len(&r_data->sg[host->sg_pos]) - host->block_pos; |
| 283 | if (!dma_len) { |
| 284 | host->block_pos = 0; |
| 285 | host->sg_pos++; |
| 286 | if (host->sg_pos == host->sg_len) |
| 287 | return 1; |
| 288 | dma_len = sg_dma_len(&r_data->sg[host->sg_pos]); |
| 289 | } |
| 290 | |
| 291 | if (dma_len < t_size) { |
| 292 | dma_blk_cnt = dma_len / r_data->blksz; |
| 293 | dma_off = host->block_pos; |
| 294 | host->block_pos += dma_blk_cnt * r_data->blksz; |
| 295 | } else { |
| 296 | dma_blk_cnt = TIFM_DMA_TSIZE; |
| 297 | dma_off = host->block_pos; |
| 298 | host->block_pos += t_size; |
| 299 | } |
| 300 | |
| 301 | if (dma_blk_cnt) |
| 302 | sg = &r_data->sg[host->sg_pos]; |
| 303 | else if (dma_len) { |
| 304 | if (r_data->flags & MMC_DATA_WRITE) { |
| 305 | local_irq_save(flags); |
| 306 | tifm_sd_bounce_block(host, r_data); |
| 307 | local_irq_restore(flags); |
| 308 | } else |
| 309 | host->cmd_flags |= DATA_CARRY; |
| 310 | |
| 311 | sg = &host->bounce_buf; |
| 312 | dma_off = 0; |
| 313 | dma_blk_cnt = 1; |
| 314 | } else |
| 315 | return 1; |
| 316 | |
| 317 | dev_dbg(&sock->dev, "setting dma for %d blocks\n", dma_blk_cnt); |
| 318 | writel(sg_dma_address(sg) + dma_off, sock->addr + SOCK_DMA_ADDRESS); |
| 319 | if (r_data->flags & MMC_DATA_WRITE) |
| 320 | writel((dma_blk_cnt << 8) | TIFM_DMA_TX | TIFM_DMA_EN, |
| 321 | sock->addr + SOCK_DMA_CONTROL); |
| 322 | else |
| 323 | writel((dma_blk_cnt << 8) | TIFM_DMA_EN, |
| 324 | sock->addr + SOCK_DMA_CONTROL); |
| 325 | |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | static unsigned int tifm_sd_op_flags(struct mmc_command *cmd) |
| 330 | { |
| 331 | unsigned int rc = 0; |
| 332 | |
| 333 | switch (mmc_resp_type(cmd)) { |
| 334 | case MMC_RSP_NONE: |
| 335 | rc |= TIFM_MMCSD_RSP_R0; |
| 336 | break; |
| 337 | case MMC_RSP_R1B: |
| 338 | rc |= TIFM_MMCSD_RSP_BUSY; // deliberate fall-through |
| 339 | case MMC_RSP_R1: |
| 340 | rc |= TIFM_MMCSD_RSP_R1; |
| 341 | break; |
| 342 | case MMC_RSP_R2: |
| 343 | rc |= TIFM_MMCSD_RSP_R2; |
| 344 | break; |
| 345 | case MMC_RSP_R3: |
| 346 | rc |= TIFM_MMCSD_RSP_R3; |
| 347 | break; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 348 | default: |
| 349 | BUG(); |
| 350 | } |
| 351 | |
| 352 | switch (mmc_cmd_type(cmd)) { |
| 353 | case MMC_CMD_BC: |
| 354 | rc |= TIFM_MMCSD_CMD_BC; |
| 355 | break; |
| 356 | case MMC_CMD_BCR: |
| 357 | rc |= TIFM_MMCSD_CMD_BCR; |
| 358 | break; |
| 359 | case MMC_CMD_AC: |
| 360 | rc |= TIFM_MMCSD_CMD_AC; |
| 361 | break; |
| 362 | case MMC_CMD_ADTC: |
| 363 | rc |= TIFM_MMCSD_CMD_ADTC; |
| 364 | break; |
| 365 | default: |
| 366 | BUG(); |
| 367 | } |
| 368 | return rc; |
| 369 | } |
| 370 | |
| 371 | static void tifm_sd_exec(struct tifm_sd *host, struct mmc_command *cmd) |
| 372 | { |
| 373 | struct tifm_dev *sock = host->dev; |
Alex Dubov | 0007d48 | 2007-04-12 16:59:23 +1000 | [diff] [blame] | 374 | unsigned int cmd_mask = tifm_sd_op_flags(cmd); |
| 375 | |
| 376 | if (host->open_drain) |
| 377 | cmd_mask |= TIFM_MMCSD_ODTO; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 378 | |
| 379 | if (cmd->data && (cmd->data->flags & MMC_DATA_READ)) |
| 380 | cmd_mask |= TIFM_MMCSD_READ; |
| 381 | |
| 382 | dev_dbg(&sock->dev, "executing opcode 0x%x, arg: 0x%x, mask: 0x%x\n", |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 383 | cmd->opcode, cmd->arg, cmd_mask); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 384 | |
| 385 | writel((cmd->arg >> 16) & 0xffff, sock->addr + SOCK_MMCSD_ARG_HIGH); |
| 386 | writel(cmd->arg & 0xffff, sock->addr + SOCK_MMCSD_ARG_LOW); |
| 387 | writel(cmd->opcode | cmd_mask, sock->addr + SOCK_MMCSD_COMMAND); |
| 388 | } |
| 389 | |
| 390 | static void tifm_sd_fetch_resp(struct mmc_command *cmd, struct tifm_dev *sock) |
| 391 | { |
| 392 | cmd->resp[0] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x1c) << 16) |
| 393 | | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x18); |
| 394 | cmd->resp[1] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x14) << 16) |
| 395 | | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x10); |
| 396 | cmd->resp[2] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x0c) << 16) |
| 397 | | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x08); |
| 398 | cmd->resp[3] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x04) << 16) |
| 399 | | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x00); |
| 400 | } |
| 401 | |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 402 | static void tifm_sd_check_status(struct tifm_sd *host) |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 403 | { |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 404 | struct tifm_dev *sock = host->dev; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 405 | struct mmc_command *cmd = host->req->cmd; |
| 406 | |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 407 | if (cmd->error != MMC_ERR_NONE) |
| 408 | goto finish_request; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 409 | |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 410 | if (!(host->cmd_flags & CMD_READY)) |
| 411 | return; |
| 412 | |
| 413 | if (cmd->data) { |
| 414 | if (cmd->data->error != MMC_ERR_NONE) { |
| 415 | if ((host->cmd_flags & SCMD_ACTIVE) |
| 416 | && !(host->cmd_flags & SCMD_READY)) |
| 417 | return; |
| 418 | |
| 419 | goto finish_request; |
| 420 | } |
| 421 | |
| 422 | if (!(host->cmd_flags & BRS_READY)) |
| 423 | return; |
| 424 | |
| 425 | if (!(host->no_dma || (host->cmd_flags & FIFO_READY))) |
| 426 | return; |
| 427 | |
| 428 | if (cmd->data->flags & MMC_DATA_WRITE) { |
| 429 | if (host->req->stop) { |
| 430 | if (!(host->cmd_flags & SCMD_ACTIVE)) { |
| 431 | host->cmd_flags |= SCMD_ACTIVE; |
| 432 | writel(TIFM_MMCSD_EOFB |
| 433 | | readl(sock->addr |
| 434 | + SOCK_MMCSD_INT_ENABLE), |
| 435 | sock->addr |
| 436 | + SOCK_MMCSD_INT_ENABLE); |
| 437 | tifm_sd_exec(host, host->req->stop); |
| 438 | return; |
| 439 | } else { |
| 440 | if (!(host->cmd_flags & SCMD_READY) |
| 441 | || (host->cmd_flags & CARD_BUSY)) |
| 442 | return; |
| 443 | writel((~TIFM_MMCSD_EOFB) |
| 444 | & readl(sock->addr |
| 445 | + SOCK_MMCSD_INT_ENABLE), |
| 446 | sock->addr |
| 447 | + SOCK_MMCSD_INT_ENABLE); |
| 448 | } |
| 449 | } else { |
| 450 | if (host->cmd_flags & CARD_BUSY) |
| 451 | return; |
| 452 | writel((~TIFM_MMCSD_EOFB) |
| 453 | & readl(sock->addr |
| 454 | + SOCK_MMCSD_INT_ENABLE), |
| 455 | sock->addr + SOCK_MMCSD_INT_ENABLE); |
| 456 | } |
| 457 | } else { |
| 458 | if (host->req->stop) { |
| 459 | if (!(host->cmd_flags & SCMD_ACTIVE)) { |
| 460 | host->cmd_flags |= SCMD_ACTIVE; |
| 461 | tifm_sd_exec(host, host->req->stop); |
| 462 | return; |
| 463 | } else { |
| 464 | if (!(host->cmd_flags & SCMD_READY)) |
| 465 | return; |
| 466 | } |
| 467 | } |
| 468 | } |
| 469 | } |
| 470 | finish_request: |
| 471 | tasklet_schedule(&host->finish_tasklet); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 472 | } |
| 473 | |
| 474 | /* Called from interrupt handler */ |
Alex Dubov | 4552f0c | 2007-04-12 16:59:12 +1000 | [diff] [blame] | 475 | static void tifm_sd_data_event(struct tifm_dev *sock) |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 476 | { |
| 477 | struct tifm_sd *host; |
Alex Dubov | 4552f0c | 2007-04-12 16:59:12 +1000 | [diff] [blame] | 478 | unsigned int fifo_status = 0; |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 479 | struct mmc_data *r_data = NULL; |
Alex Dubov | 4552f0c | 2007-04-12 16:59:12 +1000 | [diff] [blame] | 480 | |
| 481 | spin_lock(&sock->lock); |
| 482 | host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock)); |
Alex Dubov | 4552f0c | 2007-04-12 16:59:12 +1000 | [diff] [blame] | 483 | fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS); |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 484 | dev_dbg(&sock->dev, "data event: fifo_status %x, flags %x\n", |
| 485 | fifo_status, host->cmd_flags); |
| 486 | |
| 487 | if (host->req) { |
| 488 | r_data = host->req->cmd->data; |
| 489 | |
| 490 | if (r_data && (fifo_status & TIFM_FIFO_READY)) { |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 491 | if (tifm_sd_set_dma_data(host, r_data)) { |
| 492 | host->cmd_flags |= FIFO_READY; |
| 493 | tifm_sd_check_status(host); |
| 494 | } |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 495 | } |
| 496 | } |
| 497 | |
Alex Dubov | 4552f0c | 2007-04-12 16:59:12 +1000 | [diff] [blame] | 498 | writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS); |
Alex Dubov | 4552f0c | 2007-04-12 16:59:12 +1000 | [diff] [blame] | 499 | spin_unlock(&sock->lock); |
Alex Dubov | 4552f0c | 2007-04-12 16:59:12 +1000 | [diff] [blame] | 500 | } |
| 501 | |
| 502 | /* Called from interrupt handler */ |
| 503 | static void tifm_sd_card_event(struct tifm_dev *sock) |
| 504 | { |
| 505 | struct tifm_sd *host; |
| 506 | unsigned int host_status = 0; |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 507 | int cmd_error = MMC_ERR_NONE; |
| 508 | struct mmc_command *cmd = NULL; |
| 509 | unsigned long flags; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 510 | |
| 511 | spin_lock(&sock->lock); |
| 512 | host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock)); |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 513 | host_status = readl(sock->addr + SOCK_MMCSD_STATUS); |
| 514 | dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n", |
| 515 | host_status, host->cmd_flags); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 516 | |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 517 | if (host->req) { |
| 518 | cmd = host->req->cmd; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 519 | |
| 520 | if (host_status & TIFM_MMCSD_ERRMASK) { |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 521 | writel(host_status & TIFM_MMCSD_ERRMASK, |
| 522 | sock->addr + SOCK_MMCSD_STATUS); |
| 523 | if (host_status & TIFM_MMCSD_CTO) |
| 524 | cmd_error = MMC_ERR_TIMEOUT; |
| 525 | else if (host_status & TIFM_MMCSD_CCRC) |
| 526 | cmd_error = MMC_ERR_BADCRC; |
| 527 | |
| 528 | if (cmd->data) { |
| 529 | if (host_status & TIFM_MMCSD_DTO) |
| 530 | cmd->data->error = MMC_ERR_TIMEOUT; |
| 531 | else if (host_status & TIFM_MMCSD_DCRC) |
| 532 | cmd->data->error = MMC_ERR_BADCRC; |
| 533 | } |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 534 | |
| 535 | writel(TIFM_FIFO_INT_SETALL, |
| 536 | sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); |
| 537 | writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL); |
| 538 | |
| 539 | if (host->req->stop) { |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 540 | if (host->cmd_flags & SCMD_ACTIVE) { |
| 541 | host->req->stop->error = cmd_error; |
| 542 | host->cmd_flags |= SCMD_READY; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 543 | } else { |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 544 | cmd->error = cmd_error; |
| 545 | host->cmd_flags |= SCMD_ACTIVE; |
| 546 | tifm_sd_exec(host, host->req->stop); |
| 547 | goto done; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 548 | } |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 549 | } else |
| 550 | cmd->error = cmd_error; |
| 551 | } else { |
| 552 | if (host_status & (TIFM_MMCSD_EOC | TIFM_MMCSD_CERR)) { |
| 553 | if (!(host->cmd_flags & CMD_READY)) { |
| 554 | host->cmd_flags |= CMD_READY; |
| 555 | tifm_sd_fetch_resp(cmd, sock); |
| 556 | } else if (host->cmd_flags & SCMD_ACTIVE) { |
| 557 | host->cmd_flags |= SCMD_READY; |
| 558 | tifm_sd_fetch_resp(host->req->stop, |
| 559 | sock); |
| 560 | } |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 561 | } |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 562 | if (host_status & TIFM_MMCSD_BRS) |
| 563 | host->cmd_flags |= BRS_READY; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 564 | } |
| 565 | |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 566 | if (host->no_dma && cmd->data) { |
| 567 | if (host_status & TIFM_MMCSD_AE) |
| 568 | writel(host_status & TIFM_MMCSD_AE, |
| 569 | sock->addr + SOCK_MMCSD_STATUS); |
| 570 | |
| 571 | if (host_status & (TIFM_MMCSD_AE | TIFM_MMCSD_AF |
| 572 | | TIFM_MMCSD_BRS)) { |
| 573 | local_irq_save(flags); |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 574 | tifm_sd_transfer_data(host); |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 575 | local_irq_restore(flags); |
| 576 | host_status &= ~TIFM_MMCSD_AE; |
| 577 | } |
| 578 | } |
| 579 | |
| 580 | if (host_status & TIFM_MMCSD_EOFB) |
Alex Dubov | 0007d48 | 2007-04-12 16:59:23 +1000 | [diff] [blame] | 581 | host->cmd_flags &= ~CARD_BUSY; |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 582 | else if (host_status & TIFM_MMCSD_CB) |
| 583 | host->cmd_flags |= CARD_BUSY; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 584 | |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 585 | tifm_sd_check_status(host); |
| 586 | } |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 587 | done: |
Alex Dubov | 72dc9d9 | 2007-04-12 17:05:23 +1000 | [diff] [blame] | 588 | writel(host_status, sock->addr + SOCK_MMCSD_STATUS); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 589 | spin_unlock(&sock->lock); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 590 | } |
| 591 | |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 592 | static void tifm_sd_set_data_timeout(struct tifm_sd *host, |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 593 | struct mmc_data *data) |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 594 | { |
| 595 | struct tifm_dev *sock = host->dev; |
| 596 | unsigned int data_timeout = data->timeout_clks; |
| 597 | |
| 598 | if (fixed_timeout) |
| 599 | return; |
| 600 | |
| 601 | data_timeout += data->timeout_ns / |
Alex Dubov | 83d420b | 2006-12-08 16:50:50 +1100 | [diff] [blame] | 602 | ((1000000000UL / host->clk_freq) * host->clk_div); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 603 | |
| 604 | if (data_timeout < 0xffff) { |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 605 | writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO); |
Alex Dubov | 83d420b | 2006-12-08 16:50:50 +1100 | [diff] [blame] | 606 | writel((~TIFM_MMCSD_DPE) |
| 607 | & readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG), |
| 608 | sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 609 | } else { |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 610 | data_timeout = (data_timeout >> 10) + 1; |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 611 | if (data_timeout > 0xffff) |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 612 | data_timeout = 0; /* set to unlimited */ |
| 613 | writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO); |
Alex Dubov | 83d420b | 2006-12-08 16:50:50 +1100 | [diff] [blame] | 614 | writel(TIFM_MMCSD_DPE |
| 615 | | readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG), |
| 616 | sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 617 | } |
| 618 | } |
| 619 | |
| 620 | static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq) |
| 621 | { |
| 622 | struct tifm_sd *host = mmc_priv(mmc); |
| 623 | struct tifm_dev *sock = host->dev; |
| 624 | unsigned long flags; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 625 | struct mmc_data *r_data = mrq->cmd->data; |
| 626 | |
| 627 | spin_lock_irqsave(&sock->lock, flags); |
Alex Dubov | 0007d48 | 2007-04-12 16:59:23 +1000 | [diff] [blame] | 628 | if (host->eject) { |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 629 | spin_unlock_irqrestore(&sock->lock, flags); |
| 630 | goto err_out; |
| 631 | } |
| 632 | |
| 633 | if (host->req) { |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 634 | printk(KERN_ERR "%s : unfinished request detected\n", |
| 635 | sock->dev.bus_id); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 636 | spin_unlock_irqrestore(&sock->lock, flags); |
| 637 | goto err_out; |
| 638 | } |
| 639 | |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 640 | host->cmd_flags = 0; |
| 641 | host->block_pos = 0; |
| 642 | host->sg_pos = 0; |
| 643 | |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 644 | if (r_data) { |
| 645 | tifm_sd_set_data_timeout(host, r_data); |
| 646 | |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 647 | if ((r_data->flags & MMC_DATA_WRITE) && !mrq->stop) |
| 648 | writel(TIFM_MMCSD_EOFB |
| 649 | | readl(sock->addr + SOCK_MMCSD_INT_ENABLE), |
| 650 | sock->addr + SOCK_MMCSD_INT_ENABLE); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 651 | |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 652 | if (host->no_dma) { |
Alex Dubov | dfef26d | 2007-04-12 16:59:24 +1000 | [diff] [blame] | 653 | writel(TIFM_MMCSD_BUFINT |
| 654 | | readl(sock->addr + SOCK_MMCSD_INT_ENABLE), |
| 655 | sock->addr + SOCK_MMCSD_INT_ENABLE); |
| 656 | writel(((TIFM_MMCSD_FIFO_SIZE - 1) << 8) |
| 657 | | (TIFM_MMCSD_FIFO_SIZE - 1), |
| 658 | sock->addr + SOCK_MMCSD_BUFFER_CONFIG); |
| 659 | |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 660 | host->sg_len = r_data->sg_len; |
Alex Dubov | dfef26d | 2007-04-12 16:59:24 +1000 | [diff] [blame] | 661 | } else { |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 662 | sg_init_one(&host->bounce_buf, host->bounce_buf_data, |
| 663 | r_data->blksz); |
| 664 | |
| 665 | if(1 != tifm_map_sg(sock, &host->bounce_buf, 1, |
| 666 | r_data->flags & MMC_DATA_WRITE |
| 667 | ? PCI_DMA_TODEVICE |
| 668 | : PCI_DMA_FROMDEVICE)) { |
| 669 | printk(KERN_ERR "%s : scatterlist map failed\n", |
| 670 | sock->dev.bus_id); |
| 671 | spin_unlock_irqrestore(&sock->lock, flags); |
| 672 | goto err_out; |
| 673 | } |
| 674 | host->sg_len = tifm_map_sg(sock, r_data->sg, |
| 675 | r_data->sg_len, |
| 676 | r_data->flags |
| 677 | & MMC_DATA_WRITE |
| 678 | ? PCI_DMA_TODEVICE |
| 679 | : PCI_DMA_FROMDEVICE); |
| 680 | if (host->sg_len < 1) { |
| 681 | printk(KERN_ERR "%s : scatterlist map failed\n", |
| 682 | sock->dev.bus_id); |
| 683 | tifm_unmap_sg(sock, &host->bounce_buf, 1, |
| 684 | r_data->flags & MMC_DATA_WRITE |
| 685 | ? PCI_DMA_TODEVICE |
| 686 | : PCI_DMA_FROMDEVICE); |
Alex Dubov | dfef26d | 2007-04-12 16:59:24 +1000 | [diff] [blame] | 687 | spin_unlock_irqrestore(&sock->lock, flags); |
| 688 | goto err_out; |
| 689 | } |
| 690 | |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 691 | writel(TIFM_FIFO_INT_SETALL, |
| 692 | sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); |
| 693 | writel(ilog2(r_data->blksz) - 2, |
| 694 | sock->addr + SOCK_FIFO_PAGE_SIZE); |
| 695 | writel(TIFM_FIFO_ENABLE, |
| 696 | sock->addr + SOCK_FIFO_CONTROL); |
| 697 | writel(TIFM_FIFO_INTMASK, |
| 698 | sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); |
| 699 | |
| 700 | if (r_data->flags & MMC_DATA_WRITE) |
| 701 | writel(TIFM_MMCSD_TXDE, |
| 702 | sock->addr + SOCK_MMCSD_BUFFER_CONFIG); |
| 703 | else |
| 704 | writel(TIFM_MMCSD_RXDE, |
| 705 | sock->addr + SOCK_MMCSD_BUFFER_CONFIG); |
| 706 | |
| 707 | tifm_sd_set_dma_data(host, r_data); |
Alex Dubov | dfef26d | 2007-04-12 16:59:24 +1000 | [diff] [blame] | 708 | } |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 709 | |
| 710 | writel(r_data->blocks - 1, |
| 711 | sock->addr + SOCK_MMCSD_NUM_BLOCKS); |
| 712 | writel(r_data->blksz - 1, |
| 713 | sock->addr + SOCK_MMCSD_BLOCK_LEN); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | host->req = mrq; |
Alex Dubov | 0803dd0 | 2006-12-08 16:50:49 +1100 | [diff] [blame] | 717 | mod_timer(&host->timer, jiffies + host->timeout_jiffies); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 718 | writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL), |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 719 | sock->addr + SOCK_CONTROL); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 720 | tifm_sd_exec(host, mrq->cmd); |
| 721 | spin_unlock_irqrestore(&sock->lock, flags); |
| 722 | return; |
| 723 | |
| 724 | err_out: |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 725 | mrq->cmd->error = MMC_ERR_TIMEOUT; |
| 726 | mmc_request_done(mmc, mrq); |
| 727 | } |
| 728 | |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 729 | static void tifm_sd_end_cmd(unsigned long data) |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 730 | { |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 731 | struct tifm_sd *host = (struct tifm_sd*)data; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 732 | struct tifm_dev *sock = host->dev; |
| 733 | struct mmc_host *mmc = tifm_get_drvdata(sock); |
| 734 | struct mmc_request *mrq; |
Al Viro | e069d79 | 2006-10-09 20:29:43 +0100 | [diff] [blame] | 735 | struct mmc_data *r_data = NULL; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 736 | unsigned long flags; |
| 737 | |
| 738 | spin_lock_irqsave(&sock->lock, flags); |
| 739 | |
Alex Dubov | 0803dd0 | 2006-12-08 16:50:49 +1100 | [diff] [blame] | 740 | del_timer(&host->timer); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 741 | mrq = host->req; |
Al Viro | e069d79 | 2006-10-09 20:29:43 +0100 | [diff] [blame] | 742 | host->req = NULL; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 743 | |
| 744 | if (!mrq) { |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 745 | printk(KERN_ERR " %s : no request to complete?\n", |
| 746 | sock->dev.bus_id); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 747 | spin_unlock_irqrestore(&sock->lock, flags); |
| 748 | return; |
| 749 | } |
| 750 | |
| 751 | r_data = mrq->cmd->data; |
| 752 | if (r_data) { |
Alex Dubov | dfef26d | 2007-04-12 16:59:24 +1000 | [diff] [blame] | 753 | if (host->no_dma) { |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 754 | writel((~TIFM_MMCSD_BUFINT) |
| 755 | & readl(sock->addr + SOCK_MMCSD_INT_ENABLE), |
| 756 | sock->addr + SOCK_MMCSD_INT_ENABLE); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 757 | } else { |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 758 | tifm_unmap_sg(sock, &host->bounce_buf, 1, |
| 759 | (r_data->flags & MMC_DATA_WRITE) |
| 760 | ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); |
Alex Dubov | dfef26d | 2007-04-12 16:59:24 +1000 | [diff] [blame] | 761 | tifm_unmap_sg(sock, r_data->sg, r_data->sg_len, |
| 762 | (r_data->flags & MMC_DATA_WRITE) |
| 763 | ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 764 | } |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 765 | |
| 766 | r_data->bytes_xfered = r_data->blocks |
| 767 | - readl(sock->addr + SOCK_MMCSD_NUM_BLOCKS) - 1; |
| 768 | r_data->bytes_xfered *= r_data->blksz; |
| 769 | r_data->bytes_xfered += r_data->blksz |
| 770 | - readl(sock->addr + SOCK_MMCSD_BLOCK_LEN) + 1; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 771 | } |
| 772 | |
| 773 | writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL), |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 774 | sock->addr + SOCK_CONTROL); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 775 | |
| 776 | spin_unlock_irqrestore(&sock->lock, flags); |
| 777 | mmc_request_done(mmc, mrq); |
| 778 | } |
| 779 | |
Alex Dubov | 0803dd0 | 2006-12-08 16:50:49 +1100 | [diff] [blame] | 780 | static void tifm_sd_abort(unsigned long data) |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 781 | { |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 782 | struct tifm_sd *host = (struct tifm_sd*)data; |
| 783 | |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 784 | printk(KERN_ERR |
| 785 | "%s : card failed to respond for a long period of time " |
| 786 | "(%x, %x)\n", |
| 787 | host->dev->dev.bus_id, host->req->cmd->opcode, host->cmd_flags); |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 788 | |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 789 | tifm_eject(host->dev); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 790 | } |
| 791 | |
| 792 | static void tifm_sd_ios(struct mmc_host *mmc, struct mmc_ios *ios) |
| 793 | { |
| 794 | struct tifm_sd *host = mmc_priv(mmc); |
| 795 | struct tifm_dev *sock = host->dev; |
| 796 | unsigned int clk_div1, clk_div2; |
| 797 | unsigned long flags; |
| 798 | |
| 799 | spin_lock_irqsave(&sock->lock, flags); |
| 800 | |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 801 | dev_dbg(&sock->dev, "ios: clock = %u, vdd = %x, bus_mode = %x, " |
| 802 | "chip_select = %x, power_mode = %x, bus_width = %x\n", |
| 803 | ios->clock, ios->vdd, ios->bus_mode, ios->chip_select, |
| 804 | ios->power_mode, ios->bus_width); |
| 805 | |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 806 | if (ios->bus_width == MMC_BUS_WIDTH_4) { |
| 807 | writel(TIFM_MMCSD_4BBUS | readl(sock->addr + SOCK_MMCSD_CONFIG), |
| 808 | sock->addr + SOCK_MMCSD_CONFIG); |
| 809 | } else { |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 810 | writel((~TIFM_MMCSD_4BBUS) |
| 811 | & readl(sock->addr + SOCK_MMCSD_CONFIG), |
| 812 | sock->addr + SOCK_MMCSD_CONFIG); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 813 | } |
| 814 | |
| 815 | if (ios->clock) { |
| 816 | clk_div1 = 20000000 / ios->clock; |
| 817 | if (!clk_div1) |
| 818 | clk_div1 = 1; |
| 819 | |
| 820 | clk_div2 = 24000000 / ios->clock; |
| 821 | if (!clk_div2) |
| 822 | clk_div2 = 1; |
| 823 | |
| 824 | if ((20000000 / clk_div1) > ios->clock) |
| 825 | clk_div1++; |
| 826 | if ((24000000 / clk_div2) > ios->clock) |
| 827 | clk_div2++; |
| 828 | if ((20000000 / clk_div1) > (24000000 / clk_div2)) { |
| 829 | host->clk_freq = 20000000; |
| 830 | host->clk_div = clk_div1; |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 831 | writel((~TIFM_CTRL_FAST_CLK) |
| 832 | & readl(sock->addr + SOCK_CONTROL), |
| 833 | sock->addr + SOCK_CONTROL); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 834 | } else { |
| 835 | host->clk_freq = 24000000; |
| 836 | host->clk_div = clk_div2; |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 837 | writel(TIFM_CTRL_FAST_CLK |
| 838 | | readl(sock->addr + SOCK_CONTROL), |
| 839 | sock->addr + SOCK_CONTROL); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 840 | } |
| 841 | } else { |
| 842 | host->clk_div = 0; |
| 843 | } |
| 844 | host->clk_div &= TIFM_MMCSD_CLKMASK; |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 845 | writel(host->clk_div |
| 846 | | ((~TIFM_MMCSD_CLKMASK) |
| 847 | & readl(sock->addr + SOCK_MMCSD_CONFIG)), |
| 848 | sock->addr + SOCK_MMCSD_CONFIG); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 849 | |
Alex Dubov | 0007d48 | 2007-04-12 16:59:23 +1000 | [diff] [blame] | 850 | host->open_drain = (ios->bus_mode == MMC_BUSMODE_OPENDRAIN); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 851 | |
| 852 | /* chip_select : maybe later */ |
| 853 | //vdd |
| 854 | //power is set before probe / after remove |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 855 | |
| 856 | spin_unlock_irqrestore(&sock->lock, flags); |
| 857 | } |
| 858 | |
| 859 | static int tifm_sd_ro(struct mmc_host *mmc) |
| 860 | { |
Alex Dubov | 0007d48 | 2007-04-12 16:59:23 +1000 | [diff] [blame] | 861 | int rc = 0; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 862 | struct tifm_sd *host = mmc_priv(mmc); |
| 863 | struct tifm_dev *sock = host->dev; |
| 864 | unsigned long flags; |
| 865 | |
| 866 | spin_lock_irqsave(&sock->lock, flags); |
Alex Dubov | 0007d48 | 2007-04-12 16:59:23 +1000 | [diff] [blame] | 867 | if (TIFM_MMCSD_CARD_RO & readl(sock->addr + SOCK_PRESENT_STATE)) |
| 868 | rc = 1; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 869 | spin_unlock_irqrestore(&sock->lock, flags); |
| 870 | return rc; |
| 871 | } |
| 872 | |
Alex Dubov | dfef26d | 2007-04-12 16:59:24 +1000 | [diff] [blame] | 873 | static const struct mmc_host_ops tifm_sd_ops = { |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 874 | .request = tifm_sd_request, |
| 875 | .set_ios = tifm_sd_ios, |
| 876 | .get_ro = tifm_sd_ro |
| 877 | }; |
| 878 | |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 879 | static int tifm_sd_initialize_host(struct tifm_sd *host) |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 880 | { |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 881 | int rc; |
| 882 | unsigned int host_status = 0; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 883 | struct tifm_dev *sock = host->dev; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 884 | |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 885 | writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE); |
| 886 | mmiowb(); |
| 887 | host->clk_div = 61; |
| 888 | host->clk_freq = 20000000; |
| 889 | writel(TIFM_MMCSD_RESET, sock->addr + SOCK_MMCSD_SYSTEM_CONTROL); |
| 890 | writel(host->clk_div | TIFM_MMCSD_POWER, |
| 891 | sock->addr + SOCK_MMCSD_CONFIG); |
| 892 | |
| 893 | /* wait up to 0.51 sec for reset */ |
Alex Dubov | 5897d65 | 2007-04-12 17:05:24 +1000 | [diff] [blame] | 894 | for (rc = 32; rc <= 256; rc <<= 1) { |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 895 | if (1 & readl(sock->addr + SOCK_MMCSD_SYSTEM_STATUS)) { |
| 896 | rc = 0; |
| 897 | break; |
| 898 | } |
| 899 | msleep(rc); |
| 900 | } |
| 901 | |
| 902 | if (rc) { |
Alex Dubov | 5897d65 | 2007-04-12 17:05:24 +1000 | [diff] [blame] | 903 | printk(KERN_ERR "%s : controller failed to reset\n", |
| 904 | sock->dev.bus_id); |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 905 | return -ENODEV; |
| 906 | } |
| 907 | |
| 908 | writel(0, sock->addr + SOCK_MMCSD_NUM_BLOCKS); |
| 909 | writel(host->clk_div | TIFM_MMCSD_POWER, |
| 910 | sock->addr + SOCK_MMCSD_CONFIG); |
| 911 | writel(TIFM_MMCSD_RXDE, sock->addr + SOCK_MMCSD_BUFFER_CONFIG); |
| 912 | |
| 913 | // command timeout fixed to 64 clocks for now |
| 914 | writel(64, sock->addr + SOCK_MMCSD_COMMAND_TO); |
| 915 | writel(TIFM_MMCSD_INAB, sock->addr + SOCK_MMCSD_COMMAND); |
| 916 | |
Alex Dubov | 5897d65 | 2007-04-12 17:05:24 +1000 | [diff] [blame] | 917 | for (rc = 16; rc <= 64; rc <<= 1) { |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 918 | host_status = readl(sock->addr + SOCK_MMCSD_STATUS); |
| 919 | writel(host_status, sock->addr + SOCK_MMCSD_STATUS); |
| 920 | if (!(host_status & TIFM_MMCSD_ERRMASK) |
| 921 | && (host_status & TIFM_MMCSD_EOC)) { |
| 922 | rc = 0; |
| 923 | break; |
| 924 | } |
| 925 | msleep(rc); |
| 926 | } |
| 927 | |
| 928 | if (rc) { |
Alex Dubov | 5897d65 | 2007-04-12 17:05:24 +1000 | [diff] [blame] | 929 | printk(KERN_ERR |
| 930 | "%s : card not ready - probe failed on initialization\n", |
| 931 | sock->dev.bus_id); |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 932 | return -ENODEV; |
| 933 | } |
| 934 | |
Alex Dubov | 5897d65 | 2007-04-12 17:05:24 +1000 | [diff] [blame] | 935 | writel(TIFM_MMCSD_CERR | TIFM_MMCSD_BRS | TIFM_MMCSD_EOC |
| 936 | | TIFM_MMCSD_ERRMASK, |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 937 | sock->addr + SOCK_MMCSD_INT_ENABLE); |
| 938 | mmiowb(); |
| 939 | |
| 940 | return 0; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 941 | } |
| 942 | |
| 943 | static int tifm_sd_probe(struct tifm_dev *sock) |
| 944 | { |
| 945 | struct mmc_host *mmc; |
| 946 | struct tifm_sd *host; |
| 947 | int rc = -EIO; |
| 948 | |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 949 | if (!(TIFM_SOCK_STATE_OCCUPIED |
| 950 | & readl(sock->addr + SOCK_PRESENT_STATE))) { |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 951 | printk(KERN_WARNING "%s : card gone, unexpectedly\n", |
| 952 | sock->dev.bus_id); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 953 | return rc; |
| 954 | } |
| 955 | |
| 956 | mmc = mmc_alloc_host(sizeof(struct tifm_sd), &sock->dev); |
| 957 | if (!mmc) |
| 958 | return -ENOMEM; |
| 959 | |
| 960 | host = mmc_priv(mmc); |
Alex Dubov | 0007d48 | 2007-04-12 16:59:23 +1000 | [diff] [blame] | 961 | host->no_dma = no_dma; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 962 | tifm_set_drvdata(sock, mmc); |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 963 | host->dev = sock; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 964 | host->timeout_jiffies = msecs_to_jiffies(1000); |
| 965 | |
Alex Dubov | dfef26d | 2007-04-12 16:59:24 +1000 | [diff] [blame] | 966 | tasklet_init(&host->finish_tasklet, tifm_sd_end_cmd, |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 967 | (unsigned long)host); |
| 968 | setup_timer(&host->timer, tifm_sd_abort, (unsigned long)host); |
| 969 | |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 970 | mmc->ops = &tifm_sd_ops; |
| 971 | mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 972 | mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 973 | mmc->f_min = 20000000 / 60; |
| 974 | mmc->f_max = 24000000; |
Alex Dubov | 13cdf48 | 2007-04-12 17:05:25 +1000 | [diff] [blame] | 975 | |
| 976 | mmc->max_blk_count = 2048; |
| 977 | mmc->max_hw_segs = mmc->max_blk_count; |
| 978 | mmc->max_blk_size = min(TIFM_MMCSD_MAX_BLOCK_SIZE, PAGE_SIZE); |
| 979 | mmc->max_seg_size = mmc->max_blk_count * mmc->max_blk_size; |
| 980 | mmc->max_req_size = mmc->max_seg_size; |
| 981 | mmc->max_phys_segs = mmc->max_hw_segs; |
| 982 | |
Alex Dubov | 4552f0c | 2007-04-12 16:59:12 +1000 | [diff] [blame] | 983 | sock->card_event = tifm_sd_card_event; |
| 984 | sock->data_event = tifm_sd_data_event; |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 985 | rc = tifm_sd_initialize_host(host); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 986 | |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 987 | if (!rc) |
| 988 | rc = mmc_add_host(mmc); |
Alex Dubov | 91f8d01 | 2007-04-12 17:05:26 +1000 | [diff] [blame] | 989 | if (!rc) |
| 990 | return 0; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 991 | |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 992 | mmc_free_host(mmc); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 993 | return rc; |
| 994 | } |
| 995 | |
| 996 | static void tifm_sd_remove(struct tifm_dev *sock) |
| 997 | { |
| 998 | struct mmc_host *mmc = tifm_get_drvdata(sock); |
| 999 | struct tifm_sd *host = mmc_priv(mmc); |
Alex Dubov | b039d4a | 2007-04-12 16:59:21 +1000 | [diff] [blame] | 1000 | unsigned long flags; |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 1001 | |
Alex Dubov | b039d4a | 2007-04-12 16:59:21 +1000 | [diff] [blame] | 1002 | spin_lock_irqsave(&sock->lock, flags); |
Alex Dubov | 0007d48 | 2007-04-12 16:59:23 +1000 | [diff] [blame] | 1003 | host->eject = 1; |
Alex Dubov | 592d372 | 2007-04-12 16:59:22 +1000 | [diff] [blame] | 1004 | writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE); |
| 1005 | mmiowb(); |
| 1006 | spin_unlock_irqrestore(&sock->lock, flags); |
| 1007 | |
| 1008 | tasklet_kill(&host->finish_tasklet); |
| 1009 | |
| 1010 | spin_lock_irqsave(&sock->lock, flags); |
Alex Dubov | b039d4a | 2007-04-12 16:59:21 +1000 | [diff] [blame] | 1011 | if (host->req) { |
| 1012 | writel(TIFM_FIFO_INT_SETALL, |
| 1013 | sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR); |
| 1014 | writel(0, sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET); |
Alex Dubov | 592d372 | 2007-04-12 16:59:22 +1000 | [diff] [blame] | 1015 | host->req->cmd->error = MMC_ERR_TIMEOUT; |
| 1016 | if (host->req->stop) |
| 1017 | host->req->stop->error = MMC_ERR_TIMEOUT; |
Alex Dubov | b039d4a | 2007-04-12 16:59:21 +1000 | [diff] [blame] | 1018 | tasklet_schedule(&host->finish_tasklet); |
| 1019 | } |
| 1020 | spin_unlock_irqrestore(&sock->lock, flags); |
Alex Dubov | 8e02f85 | 2006-12-08 16:50:51 +1100 | [diff] [blame] | 1021 | mmc_remove_host(mmc); |
Alex Dubov | 592d372 | 2007-04-12 16:59:22 +1000 | [diff] [blame] | 1022 | dev_dbg(&sock->dev, "after remove\n"); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 1023 | |
| 1024 | /* The meaning of the bit majority in this constant is unknown. */ |
| 1025 | writel(0xfff8 & readl(sock->addr + SOCK_CONTROL), |
Alex Dubov | 2e8ce5e | 2006-12-08 16:50:52 +1100 | [diff] [blame] | 1026 | sock->addr + SOCK_CONTROL); |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 1027 | |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 1028 | mmc_free_host(mmc); |
| 1029 | } |
| 1030 | |
Alex Dubov | dba4acc | 2006-12-11 01:55:38 +1100 | [diff] [blame] | 1031 | #ifdef CONFIG_PM |
| 1032 | |
| 1033 | static int tifm_sd_suspend(struct tifm_dev *sock, pm_message_t state) |
| 1034 | { |
| 1035 | struct mmc_host *mmc = tifm_get_drvdata(sock); |
| 1036 | int rc; |
| 1037 | |
| 1038 | rc = mmc_suspend_host(mmc, state); |
| 1039 | /* The meaning of the bit majority in this constant is unknown. */ |
| 1040 | writel(0xfff8 & readl(sock->addr + SOCK_CONTROL), |
| 1041 | sock->addr + SOCK_CONTROL); |
| 1042 | return rc; |
| 1043 | } |
| 1044 | |
| 1045 | static int tifm_sd_resume(struct tifm_dev *sock) |
| 1046 | { |
| 1047 | struct mmc_host *mmc = tifm_get_drvdata(sock); |
| 1048 | struct tifm_sd *host = mmc_priv(mmc); |
Alex Dubov | 5897d65 | 2007-04-12 17:05:24 +1000 | [diff] [blame] | 1049 | int rc; |
Alex Dubov | dba4acc | 2006-12-11 01:55:38 +1100 | [diff] [blame] | 1050 | |
Alex Dubov | 5897d65 | 2007-04-12 17:05:24 +1000 | [diff] [blame] | 1051 | rc = tifm_sd_initialize_host(host); |
| 1052 | dev_dbg(&sock->dev, "resume initialize %d\n", rc); |
| 1053 | |
| 1054 | if (rc) |
| 1055 | host->eject = 1; |
| 1056 | else |
| 1057 | rc = mmc_resume_host(mmc); |
| 1058 | |
| 1059 | return rc; |
Alex Dubov | dba4acc | 2006-12-11 01:55:38 +1100 | [diff] [blame] | 1060 | } |
| 1061 | |
| 1062 | #else |
| 1063 | |
| 1064 | #define tifm_sd_suspend NULL |
| 1065 | #define tifm_sd_resume NULL |
| 1066 | |
| 1067 | #endif /* CONFIG_PM */ |
| 1068 | |
Alex Dubov | e23f2b8 | 2007-04-12 16:59:14 +1000 | [diff] [blame] | 1069 | static struct tifm_device_id tifm_sd_id_tbl[] = { |
| 1070 | { TIFM_TYPE_SD }, { } |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 1071 | }; |
| 1072 | |
| 1073 | static struct tifm_driver tifm_sd_driver = { |
| 1074 | .driver = { |
| 1075 | .name = DRIVER_NAME, |
| 1076 | .owner = THIS_MODULE |
| 1077 | }, |
| 1078 | .id_table = tifm_sd_id_tbl, |
| 1079 | .probe = tifm_sd_probe, |
Alex Dubov | dba4acc | 2006-12-11 01:55:38 +1100 | [diff] [blame] | 1080 | .remove = tifm_sd_remove, |
| 1081 | .suspend = tifm_sd_suspend, |
| 1082 | .resume = tifm_sd_resume |
Alex Dubov | 4020f2d | 2006-10-04 02:15:37 -0700 | [diff] [blame] | 1083 | }; |
| 1084 | |
| 1085 | static int __init tifm_sd_init(void) |
| 1086 | { |
| 1087 | return tifm_register_driver(&tifm_sd_driver); |
| 1088 | } |
| 1089 | |
| 1090 | static void __exit tifm_sd_exit(void) |
| 1091 | { |
| 1092 | tifm_unregister_driver(&tifm_sd_driver); |
| 1093 | } |
| 1094 | |
| 1095 | MODULE_AUTHOR("Alex Dubov"); |
| 1096 | MODULE_DESCRIPTION("TI FlashMedia SD driver"); |
| 1097 | MODULE_LICENSE("GPL"); |
| 1098 | MODULE_DEVICE_TABLE(tifm, tifm_sd_id_tbl); |
| 1099 | MODULE_VERSION(DRIVER_VERSION); |
| 1100 | |
| 1101 | module_init(tifm_sd_init); |
| 1102 | module_exit(tifm_sd_exit); |