Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/mmc/wbsd.c - Winbond W83L51xD SD/MMC driver |
| 3 | * |
| 4 | * Copyright (C) 2004-2005 Pierre Ossman, All Rights Reserved. |
| 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 | * |
| 10 | * |
| 11 | * Warning! |
| 12 | * |
| 13 | * Changes to the FIFO system should be done with extreme care since |
| 14 | * the hardware is full of bugs related to the FIFO. Known issues are: |
| 15 | * |
| 16 | * - FIFO size field in FSR is always zero. |
| 17 | * |
| 18 | * - FIFO interrupts tend not to work as they should. Interrupts are |
| 19 | * triggered only for full/empty events, not for threshold values. |
| 20 | * |
| 21 | * - On APIC systems the FIFO empty interrupt is sometimes lost. |
| 22 | */ |
| 23 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | #include <linux/module.h> |
| 25 | #include <linux/moduleparam.h> |
| 26 | #include <linux/init.h> |
| 27 | #include <linux/ioport.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 28 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/interrupt.h> |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 30 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/delay.h> |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 32 | #include <linux/pnp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/highmem.h> |
| 34 | #include <linux/mmc/host.h> |
| 35 | #include <linux/mmc/protocol.h> |
| 36 | |
| 37 | #include <asm/io.h> |
| 38 | #include <asm/dma.h> |
| 39 | #include <asm/scatterlist.h> |
| 40 | |
| 41 | #include "wbsd.h" |
| 42 | |
| 43 | #define DRIVER_NAME "wbsd" |
Pierre Ossman | 402771c | 2005-11-09 23:22:27 +0000 | [diff] [blame] | 44 | #define DRIVER_VERSION "1.5" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #define DBG(x...) \ |
Russell King | c656317 | 2006-03-29 09:30:20 +0100 | [diff] [blame] | 47 | pr_debug(DRIVER_NAME ": " x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #define DBGF(f, x...) \ |
Russell King | c656317 | 2006-03-29 09:30:20 +0100 | [diff] [blame] | 49 | pr_debug(DRIVER_NAME " [%s()]: " f, __func__ , ##x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 52 | * Device resources |
| 53 | */ |
| 54 | |
| 55 | #ifdef CONFIG_PNP |
| 56 | |
| 57 | static const struct pnp_device_id pnp_dev_table[] = { |
| 58 | { "WEC0517", 0 }, |
| 59 | { "WEC0518", 0 }, |
| 60 | { "", 0 }, |
| 61 | }; |
| 62 | |
| 63 | MODULE_DEVICE_TABLE(pnp, pnp_dev_table); |
| 64 | |
| 65 | #endif /* CONFIG_PNP */ |
| 66 | |
Adrian Bunk | 3eee0d0 | 2005-07-01 13:07:37 +0100 | [diff] [blame] | 67 | static const int config_ports[] = { 0x2E, 0x4E }; |
| 68 | static const int unlock_codes[] = { 0x83, 0x87 }; |
| 69 | |
| 70 | static const int valid_ids[] = { |
| 71 | 0x7112, |
| 72 | }; |
| 73 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 74 | #ifdef CONFIG_PNP |
| 75 | static unsigned int nopnp = 0; |
| 76 | #else |
| 77 | static const unsigned int nopnp = 1; |
| 78 | #endif |
| 79 | static unsigned int io = 0x248; |
| 80 | static unsigned int irq = 6; |
| 81 | static int dma = 2; |
| 82 | |
| 83 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | * Basic functions |
| 85 | */ |
| 86 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 87 | static inline void wbsd_unlock_config(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 89 | BUG_ON(host->config == 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | outb(host->unlock_code, host->config); |
| 92 | outb(host->unlock_code, host->config); |
| 93 | } |
| 94 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 95 | static inline void wbsd_lock_config(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 97 | BUG_ON(host->config == 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 98 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | outb(LOCK_CODE, host->config); |
| 100 | } |
| 101 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 102 | static inline void wbsd_write_config(struct wbsd_host *host, u8 reg, u8 value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 104 | BUG_ON(host->config == 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | outb(reg, host->config); |
| 107 | outb(value, host->config + 1); |
| 108 | } |
| 109 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 110 | static inline u8 wbsd_read_config(struct wbsd_host *host, u8 reg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 112 | BUG_ON(host->config == 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | outb(reg, host->config); |
| 115 | return inb(host->config + 1); |
| 116 | } |
| 117 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 118 | static inline void wbsd_write_index(struct wbsd_host *host, u8 index, u8 value) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 119 | { |
| 120 | outb(index, host->base + WBSD_IDXR); |
| 121 | outb(value, host->base + WBSD_DATAR); |
| 122 | } |
| 123 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 124 | static inline u8 wbsd_read_index(struct wbsd_host *host, u8 index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | { |
| 126 | outb(index, host->base + WBSD_IDXR); |
| 127 | return inb(host->base + WBSD_DATAR); |
| 128 | } |
| 129 | |
| 130 | /* |
| 131 | * Common routines |
| 132 | */ |
| 133 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 134 | static void wbsd_init_device(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | { |
| 136 | u8 setup, ier; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | /* |
| 139 | * Reset chip (SD/MMC part) and fifo. |
| 140 | */ |
| 141 | setup = wbsd_read_index(host, WBSD_IDX_SETUP); |
| 142 | setup |= WBSD_FIFO_RESET | WBSD_SOFT_RESET; |
| 143 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 146 | * Set DAT3 to input |
| 147 | */ |
| 148 | setup &= ~WBSD_DAT3_H; |
| 149 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
| 150 | host->flags &= ~WBSD_FIGNORE_DETECT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 151 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 152 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | * Read back default clock. |
| 154 | */ |
| 155 | host->clk = wbsd_read_index(host, WBSD_IDX_CLK); |
| 156 | |
| 157 | /* |
| 158 | * Power down port. |
| 159 | */ |
| 160 | outb(WBSD_POWER_N, host->base + WBSD_CSR); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 161 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | /* |
| 163 | * Set maximum timeout. |
| 164 | */ |
| 165 | wbsd_write_index(host, WBSD_IDX_TAAC, 0x7F); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 168 | * Test for card presence |
| 169 | */ |
| 170 | if (inb(host->base + WBSD_CSR) & WBSD_CARDPRESENT) |
| 171 | host->flags |= WBSD_FCARD_PRESENT; |
| 172 | else |
| 173 | host->flags &= ~WBSD_FCARD_PRESENT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 174 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 175 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | * Enable interesting interrupts. |
| 177 | */ |
| 178 | ier = 0; |
| 179 | ier |= WBSD_EINT_CARD; |
| 180 | ier |= WBSD_EINT_FIFO_THRE; |
| 181 | ier |= WBSD_EINT_CCRC; |
| 182 | ier |= WBSD_EINT_TIMEOUT; |
| 183 | ier |= WBSD_EINT_CRC; |
| 184 | ier |= WBSD_EINT_TC; |
| 185 | |
| 186 | outb(ier, host->base + WBSD_EIR); |
| 187 | |
| 188 | /* |
| 189 | * Clear interrupts. |
| 190 | */ |
| 191 | inb(host->base + WBSD_ISR); |
| 192 | } |
| 193 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 194 | static void wbsd_reset(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | { |
| 196 | u8 setup; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 197 | |
Pierre Ossman | d191634 | 2005-11-05 10:36:35 +0000 | [diff] [blame] | 198 | printk(KERN_ERR "%s: Resetting chip\n", mmc_hostname(host->mmc)); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 199 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | /* |
| 201 | * Soft reset of chip (SD/MMC part). |
| 202 | */ |
| 203 | setup = wbsd_read_index(host, WBSD_IDX_SETUP); |
| 204 | setup |= WBSD_SOFT_RESET; |
| 205 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
| 206 | } |
| 207 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 208 | static void wbsd_request_end(struct wbsd_host *host, struct mmc_request *mrq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | { |
| 210 | unsigned long dmaflags; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 211 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | DBGF("Ending request, cmd (%x)\n", mrq->cmd->opcode); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 213 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 214 | if (host->dma >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | /* |
| 216 | * Release ISA DMA controller. |
| 217 | */ |
| 218 | dmaflags = claim_dma_lock(); |
| 219 | disable_dma(host->dma); |
| 220 | clear_dma_ff(host->dma); |
| 221 | release_dma_lock(dmaflags); |
| 222 | |
| 223 | /* |
| 224 | * Disable DMA on host. |
| 225 | */ |
| 226 | wbsd_write_index(host, WBSD_IDX_DMA, 0); |
| 227 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 228 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | host->mrq = NULL; |
| 230 | |
| 231 | /* |
| 232 | * MMC layer might call back into the driver so first unlock. |
| 233 | */ |
| 234 | spin_unlock(&host->lock); |
| 235 | mmc_request_done(host->mmc, mrq); |
| 236 | spin_lock(&host->lock); |
| 237 | } |
| 238 | |
| 239 | /* |
| 240 | * Scatter/gather functions |
| 241 | */ |
| 242 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 243 | static inline void wbsd_init_sg(struct wbsd_host *host, struct mmc_data *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | { |
| 245 | /* |
| 246 | * Get info. about SG list from data structure. |
| 247 | */ |
| 248 | host->cur_sg = data->sg; |
| 249 | host->num_sg = data->sg_len; |
| 250 | |
| 251 | host->offset = 0; |
| 252 | host->remain = host->cur_sg->length; |
| 253 | } |
| 254 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 255 | static inline int wbsd_next_sg(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | { |
| 257 | /* |
| 258 | * Skip to next SG entry. |
| 259 | */ |
| 260 | host->cur_sg++; |
| 261 | host->num_sg--; |
| 262 | |
| 263 | /* |
| 264 | * Any entries left? |
| 265 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 266 | if (host->num_sg > 0) { |
| 267 | host->offset = 0; |
| 268 | host->remain = host->cur_sg->length; |
| 269 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | return host->num_sg; |
| 272 | } |
| 273 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 274 | static inline char *wbsd_kmap_sg(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | { |
| 276 | host->mapped_sg = kmap_atomic(host->cur_sg->page, KM_BIO_SRC_IRQ) + |
| 277 | host->cur_sg->offset; |
| 278 | return host->mapped_sg; |
| 279 | } |
| 280 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 281 | static inline void wbsd_kunmap_sg(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | { |
| 283 | kunmap_atomic(host->mapped_sg, KM_BIO_SRC_IRQ); |
| 284 | } |
| 285 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 286 | static inline void wbsd_sg_to_dma(struct wbsd_host *host, struct mmc_data *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | { |
| 288 | unsigned int len, i, size; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 289 | struct scatterlist *sg; |
| 290 | char *dmabuf = host->dma_buffer; |
| 291 | char *sgbuf; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 292 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | size = host->size; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | sg = data->sg; |
| 296 | len = data->sg_len; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | /* |
| 299 | * Just loop through all entries. Size might not |
| 300 | * be the entire list though so make sure that |
| 301 | * we do not transfer too much. |
| 302 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 303 | for (i = 0; i < len; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | sgbuf = kmap_atomic(sg[i].page, KM_BIO_SRC_IRQ) + sg[i].offset; |
| 305 | if (size < sg[i].length) |
| 306 | memcpy(dmabuf, sgbuf, size); |
| 307 | else |
| 308 | memcpy(dmabuf, sgbuf, sg[i].length); |
| 309 | kunmap_atomic(sgbuf, KM_BIO_SRC_IRQ); |
| 310 | dmabuf += sg[i].length; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | if (size < sg[i].length) |
| 313 | size = 0; |
| 314 | else |
| 315 | size -= sg[i].length; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 316 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | if (size == 0) |
| 318 | break; |
| 319 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 320 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | /* |
| 322 | * Check that we didn't get a request to transfer |
| 323 | * more data than can fit into the SG list. |
| 324 | */ |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 325 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | BUG_ON(size != 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 327 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | host->size -= size; |
| 329 | } |
| 330 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 331 | static inline void wbsd_dma_to_sg(struct wbsd_host *host, struct mmc_data *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | { |
| 333 | unsigned int len, i, size; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 334 | struct scatterlist *sg; |
| 335 | char *dmabuf = host->dma_buffer; |
| 336 | char *sgbuf; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 337 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | size = host->size; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 339 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | sg = data->sg; |
| 341 | len = data->sg_len; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 342 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | /* |
| 344 | * Just loop through all entries. Size might not |
| 345 | * be the entire list though so make sure that |
| 346 | * we do not transfer too much. |
| 347 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 348 | for (i = 0; i < len; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | sgbuf = kmap_atomic(sg[i].page, KM_BIO_SRC_IRQ) + sg[i].offset; |
| 350 | if (size < sg[i].length) |
| 351 | memcpy(sgbuf, dmabuf, size); |
| 352 | else |
| 353 | memcpy(sgbuf, dmabuf, sg[i].length); |
| 354 | kunmap_atomic(sgbuf, KM_BIO_SRC_IRQ); |
| 355 | dmabuf += sg[i].length; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | if (size < sg[i].length) |
| 358 | size = 0; |
| 359 | else |
| 360 | size -= sg[i].length; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 361 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | if (size == 0) |
| 363 | break; |
| 364 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 365 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | /* |
| 367 | * Check that we didn't get a request to transfer |
| 368 | * more data than can fit into the SG list. |
| 369 | */ |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 370 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | BUG_ON(size != 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 372 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | host->size -= size; |
| 374 | } |
| 375 | |
| 376 | /* |
| 377 | * Command handling |
| 378 | */ |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 379 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 380 | static inline void wbsd_get_short_reply(struct wbsd_host *host, |
| 381 | struct mmc_command *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | { |
| 383 | /* |
| 384 | * Correct response type? |
| 385 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 386 | if (wbsd_read_index(host, WBSD_IDX_RSPLEN) != WBSD_RSP_SHORT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | cmd->error = MMC_ERR_INVALID; |
| 388 | return; |
| 389 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 390 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 391 | cmd->resp[0] = wbsd_read_index(host, WBSD_IDX_RESP12) << 24; |
| 392 | cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP13) << 16; |
| 393 | cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP14) << 8; |
| 394 | cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP15) << 0; |
| 395 | cmd->resp[1] = wbsd_read_index(host, WBSD_IDX_RESP16) << 24; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | } |
| 397 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 398 | static inline void wbsd_get_long_reply(struct wbsd_host *host, |
| 399 | struct mmc_command *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | { |
| 401 | int i; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 402 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | /* |
| 404 | * Correct response type? |
| 405 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 406 | if (wbsd_read_index(host, WBSD_IDX_RSPLEN) != WBSD_RSP_LONG) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | cmd->error = MMC_ERR_INVALID; |
| 408 | return; |
| 409 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 410 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 411 | for (i = 0; i < 4; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | cmd->resp[i] = |
| 413 | wbsd_read_index(host, WBSD_IDX_RESP1 + i * 4) << 24; |
| 414 | cmd->resp[i] |= |
| 415 | wbsd_read_index(host, WBSD_IDX_RESP2 + i * 4) << 16; |
| 416 | cmd->resp[i] |= |
| 417 | wbsd_read_index(host, WBSD_IDX_RESP3 + i * 4) << 8; |
| 418 | cmd->resp[i] |= |
| 419 | wbsd_read_index(host, WBSD_IDX_RESP4 + i * 4) << 0; |
| 420 | } |
| 421 | } |
| 422 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 423 | static void wbsd_send_command(struct wbsd_host *host, struct mmc_command *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | { |
| 425 | int i; |
| 426 | u8 status, isr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | DBGF("Sending cmd (%x)\n", cmd->opcode); |
| 429 | |
| 430 | /* |
| 431 | * Clear accumulated ISR. The interrupt routine |
| 432 | * will fill this one with events that occur during |
| 433 | * transfer. |
| 434 | */ |
| 435 | host->isr = 0; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 436 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | /* |
| 438 | * Send the command (CRC calculated by host). |
| 439 | */ |
| 440 | outb(cmd->opcode, host->base + WBSD_CMDR); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 441 | for (i = 3; i >= 0; i--) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 442 | outb((cmd->arg >> (i * 8)) & 0xff, host->base + WBSD_CMDR); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 443 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | cmd->error = MMC_ERR_NONE; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 445 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | /* |
| 447 | * Wait for the request to complete. |
| 448 | */ |
| 449 | do { |
| 450 | status = wbsd_read_index(host, WBSD_IDX_STATUS); |
| 451 | } while (status & WBSD_CARDTRAFFIC); |
| 452 | |
| 453 | /* |
| 454 | * Do we expect a reply? |
| 455 | */ |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 456 | if (cmd->flags & MMC_RSP_PRESENT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | /* |
| 458 | * Read back status. |
| 459 | */ |
| 460 | isr = host->isr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 461 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | /* Card removed? */ |
| 463 | if (isr & WBSD_INT_CARD) |
| 464 | cmd->error = MMC_ERR_TIMEOUT; |
| 465 | /* Timeout? */ |
| 466 | else if (isr & WBSD_INT_TIMEOUT) |
| 467 | cmd->error = MMC_ERR_TIMEOUT; |
| 468 | /* CRC? */ |
| 469 | else if ((cmd->flags & MMC_RSP_CRC) && (isr & WBSD_INT_CRC)) |
| 470 | cmd->error = MMC_ERR_BADCRC; |
| 471 | /* All ok */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 472 | else { |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 473 | if (cmd->flags & MMC_RSP_136) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | wbsd_get_long_reply(host, cmd); |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 475 | else |
| 476 | wbsd_get_short_reply(host, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | } |
| 478 | } |
| 479 | |
| 480 | DBGF("Sent cmd (%x), res %d\n", cmd->opcode, cmd->error); |
| 481 | } |
| 482 | |
| 483 | /* |
| 484 | * Data functions |
| 485 | */ |
| 486 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 487 | static void wbsd_empty_fifo(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 489 | struct mmc_data *data = host->mrq->cmd->data; |
| 490 | char *buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | int i, fsr, fifo; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | /* |
| 494 | * Handle excessive data. |
| 495 | */ |
| 496 | if (data->bytes_xfered == host->size) |
| 497 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 498 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | buffer = wbsd_kmap_sg(host) + host->offset; |
| 500 | |
| 501 | /* |
| 502 | * Drain the fifo. This has a tendency to loop longer |
| 503 | * than the FIFO length (usually one block). |
| 504 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 505 | while (!((fsr = inb(host->base + WBSD_FSR)) & WBSD_FIFO_EMPTY)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | /* |
| 507 | * The size field in the FSR is broken so we have to |
| 508 | * do some guessing. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 509 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | if (fsr & WBSD_FIFO_FULL) |
| 511 | fifo = 16; |
| 512 | else if (fsr & WBSD_FIFO_FUTHRE) |
| 513 | fifo = 8; |
| 514 | else |
| 515 | fifo = 1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 516 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 517 | for (i = 0; i < fifo; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | *buffer = inb(host->base + WBSD_DFR); |
| 519 | buffer++; |
| 520 | host->offset++; |
| 521 | host->remain--; |
| 522 | |
| 523 | data->bytes_xfered++; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 524 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | /* |
| 526 | * Transfer done? |
| 527 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 528 | if (data->bytes_xfered == host->size) { |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 529 | wbsd_kunmap_sg(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | return; |
| 531 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 532 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | /* |
| 534 | * End of scatter list entry? |
| 535 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 536 | if (host->remain == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | wbsd_kunmap_sg(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 538 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | /* |
| 540 | * Get next entry. Check if last. |
| 541 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 542 | if (!wbsd_next_sg(host)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | /* |
| 544 | * We should never reach this point. |
| 545 | * It means that we're trying to |
| 546 | * transfer more blocks than can fit |
| 547 | * into the scatter list. |
| 548 | */ |
| 549 | BUG_ON(1); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 550 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | host->size = data->bytes_xfered; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 552 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | return; |
| 554 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 555 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | buffer = wbsd_kmap_sg(host); |
| 557 | } |
| 558 | } |
| 559 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 560 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | wbsd_kunmap_sg(host); |
| 562 | |
| 563 | /* |
| 564 | * This is a very dirty hack to solve a |
| 565 | * hardware problem. The chip doesn't trigger |
| 566 | * FIFO threshold interrupts properly. |
| 567 | */ |
| 568 | if ((host->size - data->bytes_xfered) < 16) |
| 569 | tasklet_schedule(&host->fifo_tasklet); |
| 570 | } |
| 571 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 572 | static void wbsd_fill_fifo(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 574 | struct mmc_data *data = host->mrq->cmd->data; |
| 575 | char *buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | int i, fsr, fifo; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 577 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | /* |
| 579 | * Check that we aren't being called after the |
| 580 | * entire buffer has been transfered. |
| 581 | */ |
| 582 | if (data->bytes_xfered == host->size) |
| 583 | return; |
| 584 | |
| 585 | buffer = wbsd_kmap_sg(host) + host->offset; |
| 586 | |
| 587 | /* |
| 588 | * Fill the fifo. This has a tendency to loop longer |
| 589 | * than the FIFO length (usually one block). |
| 590 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 591 | while (!((fsr = inb(host->base + WBSD_FSR)) & WBSD_FIFO_FULL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 592 | /* |
| 593 | * The size field in the FSR is broken so we have to |
| 594 | * do some guessing. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 595 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | if (fsr & WBSD_FIFO_EMPTY) |
| 597 | fifo = 0; |
| 598 | else if (fsr & WBSD_FIFO_EMTHRE) |
| 599 | fifo = 8; |
| 600 | else |
| 601 | fifo = 15; |
| 602 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 603 | for (i = 16; i > fifo; i--) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | outb(*buffer, host->base + WBSD_DFR); |
| 605 | buffer++; |
| 606 | host->offset++; |
| 607 | host->remain--; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 608 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | data->bytes_xfered++; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 610 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | /* |
| 612 | * Transfer done? |
| 613 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 614 | if (data->bytes_xfered == host->size) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | wbsd_kunmap_sg(host); |
| 616 | return; |
| 617 | } |
| 618 | |
| 619 | /* |
| 620 | * End of scatter list entry? |
| 621 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 622 | if (host->remain == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | wbsd_kunmap_sg(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 624 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | /* |
| 626 | * Get next entry. Check if last. |
| 627 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 628 | if (!wbsd_next_sg(host)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 629 | /* |
| 630 | * We should never reach this point. |
| 631 | * It means that we're trying to |
| 632 | * transfer more blocks than can fit |
| 633 | * into the scatter list. |
| 634 | */ |
| 635 | BUG_ON(1); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 636 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | host->size = data->bytes_xfered; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 638 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | return; |
| 640 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 641 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | buffer = wbsd_kmap_sg(host); |
| 643 | } |
| 644 | } |
| 645 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 646 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | wbsd_kunmap_sg(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 648 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 649 | /* |
| 650 | * The controller stops sending interrupts for |
| 651 | * 'FIFO empty' under certain conditions. So we |
| 652 | * need to be a bit more pro-active. |
| 653 | */ |
| 654 | tasklet_schedule(&host->fifo_tasklet); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | } |
| 656 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 657 | static void wbsd_prepare_data(struct wbsd_host *host, struct mmc_data *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | { |
| 659 | u16 blksize; |
| 660 | u8 setup; |
| 661 | unsigned long dmaflags; |
| 662 | |
| 663 | DBGF("blksz %04x blks %04x flags %08x\n", |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 664 | data->blksz, data->blocks, data->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | DBGF("tsac %d ms nsac %d clk\n", |
| 666 | data->timeout_ns / 1000000, data->timeout_clks); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 667 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | /* |
| 669 | * Calculate size. |
| 670 | */ |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 671 | host->size = data->blocks * data->blksz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | |
| 673 | /* |
| 674 | * Check timeout values for overflow. |
| 675 | * (Yes, some cards cause this value to overflow). |
| 676 | */ |
| 677 | if (data->timeout_ns > 127000000) |
| 678 | wbsd_write_index(host, WBSD_IDX_TAAC, 127); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 679 | else { |
| 680 | wbsd_write_index(host, WBSD_IDX_TAAC, |
| 681 | data->timeout_ns / 1000000); |
| 682 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 683 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | if (data->timeout_clks > 255) |
| 685 | wbsd_write_index(host, WBSD_IDX_NSAC, 255); |
| 686 | else |
| 687 | wbsd_write_index(host, WBSD_IDX_NSAC, data->timeout_clks); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 688 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | /* |
| 690 | * Inform the chip of how large blocks will be |
| 691 | * sent. It needs this to determine when to |
| 692 | * calculate CRC. |
| 693 | * |
| 694 | * Space for CRC must be included in the size. |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 695 | * Two bytes are needed for each data line. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 697 | if (host->bus_width == MMC_BUS_WIDTH_1) { |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 698 | blksize = data->blksz + 2; |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 699 | |
| 700 | wbsd_write_index(host, WBSD_IDX_PBSMSB, (blksize >> 4) & 0xF0); |
| 701 | wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 702 | } else if (host->bus_width == MMC_BUS_WIDTH_4) { |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 703 | blksize = data->blksz + 2 * 4; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 704 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 705 | wbsd_write_index(host, WBSD_IDX_PBSMSB, |
| 706 | ((blksize >> 4) & 0xF0) | WBSD_DATA_WIDTH); |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 707 | wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 708 | } else { |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 709 | data->error = MMC_ERR_INVALID; |
| 710 | return; |
| 711 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | |
| 713 | /* |
| 714 | * Clear the FIFO. This is needed even for DMA |
| 715 | * transfers since the chip still uses the FIFO |
| 716 | * internally. |
| 717 | */ |
| 718 | setup = wbsd_read_index(host, WBSD_IDX_SETUP); |
| 719 | setup |= WBSD_FIFO_RESET; |
| 720 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 721 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | /* |
| 723 | * DMA transfer? |
| 724 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 725 | if (host->dma >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 726 | /* |
| 727 | * The buffer for DMA is only 64 kB. |
| 728 | */ |
| 729 | BUG_ON(host->size > 0x10000); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 730 | if (host->size > 0x10000) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | data->error = MMC_ERR_INVALID; |
| 732 | return; |
| 733 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 734 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | /* |
| 736 | * Transfer data from the SG list to |
| 737 | * the DMA buffer. |
| 738 | */ |
| 739 | if (data->flags & MMC_DATA_WRITE) |
| 740 | wbsd_sg_to_dma(host, data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 741 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | /* |
| 743 | * Initialise the ISA DMA controller. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 744 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | dmaflags = claim_dma_lock(); |
| 746 | disable_dma(host->dma); |
| 747 | clear_dma_ff(host->dma); |
| 748 | if (data->flags & MMC_DATA_READ) |
| 749 | set_dma_mode(host->dma, DMA_MODE_READ & ~0x40); |
| 750 | else |
| 751 | set_dma_mode(host->dma, DMA_MODE_WRITE & ~0x40); |
| 752 | set_dma_addr(host->dma, host->dma_addr); |
| 753 | set_dma_count(host->dma, host->size); |
| 754 | |
| 755 | enable_dma(host->dma); |
| 756 | release_dma_lock(dmaflags); |
| 757 | |
| 758 | /* |
| 759 | * Enable DMA on the host. |
| 760 | */ |
| 761 | wbsd_write_index(host, WBSD_IDX_DMA, WBSD_DMA_ENABLE); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 762 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | /* |
| 764 | * This flag is used to keep printk |
| 765 | * output to a minimum. |
| 766 | */ |
| 767 | host->firsterr = 1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | /* |
| 770 | * Initialise the SG list. |
| 771 | */ |
| 772 | wbsd_init_sg(host, data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 773 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | /* |
| 775 | * Turn off DMA. |
| 776 | */ |
| 777 | wbsd_write_index(host, WBSD_IDX_DMA, 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 778 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | /* |
| 780 | * Set up FIFO threshold levels (and fill |
| 781 | * buffer if doing a write). |
| 782 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 783 | if (data->flags & MMC_DATA_READ) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | wbsd_write_index(host, WBSD_IDX_FIFOEN, |
| 785 | WBSD_FIFOEN_FULL | 8); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 786 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | wbsd_write_index(host, WBSD_IDX_FIFOEN, |
| 788 | WBSD_FIFOEN_EMPTY | 8); |
| 789 | wbsd_fill_fifo(host); |
| 790 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 791 | } |
| 792 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | data->error = MMC_ERR_NONE; |
| 794 | } |
| 795 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 796 | static void wbsd_finish_data(struct wbsd_host *host, struct mmc_data *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | { |
| 798 | unsigned long dmaflags; |
| 799 | int count; |
| 800 | u8 status; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 801 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | WARN_ON(host->mrq == NULL); |
| 803 | |
| 804 | /* |
| 805 | * Send a stop command if needed. |
| 806 | */ |
| 807 | if (data->stop) |
| 808 | wbsd_send_command(host, data->stop); |
| 809 | |
| 810 | /* |
| 811 | * Wait for the controller to leave data |
| 812 | * transfer state. |
| 813 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 814 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | status = wbsd_read_index(host, WBSD_IDX_STATUS); |
| 816 | } while (status & (WBSD_BLOCK_READ | WBSD_BLOCK_WRITE)); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 817 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | /* |
| 819 | * DMA transfer? |
| 820 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 821 | if (host->dma >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | /* |
| 823 | * Disable DMA on the host. |
| 824 | */ |
| 825 | wbsd_write_index(host, WBSD_IDX_DMA, 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 826 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | /* |
| 828 | * Turn of ISA DMA controller. |
| 829 | */ |
| 830 | dmaflags = claim_dma_lock(); |
| 831 | disable_dma(host->dma); |
| 832 | clear_dma_ff(host->dma); |
| 833 | count = get_dma_residue(host->dma); |
| 834 | release_dma_lock(dmaflags); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 835 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | /* |
| 837 | * Any leftover data? |
| 838 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 839 | if (count) { |
Pierre Ossman | d191634 | 2005-11-05 10:36:35 +0000 | [diff] [blame] | 840 | printk(KERN_ERR "%s: Incomplete DMA transfer. " |
| 841 | "%d bytes left.\n", |
| 842 | mmc_hostname(host->mmc), count); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 843 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | data->error = MMC_ERR_FAILED; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 845 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | /* |
| 847 | * Transfer data from DMA buffer to |
| 848 | * SG list. |
| 849 | */ |
| 850 | if (data->flags & MMC_DATA_READ) |
| 851 | wbsd_dma_to_sg(host, data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 852 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | data->bytes_xfered = host->size; |
| 854 | } |
| 855 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 856 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | DBGF("Ending data transfer (%d bytes)\n", data->bytes_xfered); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 858 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | wbsd_request_end(host, host->mrq); |
| 860 | } |
| 861 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 862 | /*****************************************************************************\ |
| 863 | * * |
| 864 | * MMC layer callbacks * |
| 865 | * * |
| 866 | \*****************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 868 | static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 869 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 870 | struct wbsd_host *host = mmc_priv(mmc); |
| 871 | struct mmc_command *cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | |
| 873 | /* |
| 874 | * Disable tasklets to avoid a deadlock. |
| 875 | */ |
| 876 | spin_lock_bh(&host->lock); |
| 877 | |
| 878 | BUG_ON(host->mrq != NULL); |
| 879 | |
| 880 | cmd = mrq->cmd; |
| 881 | |
| 882 | host->mrq = mrq; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 883 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 884 | /* |
| 885 | * If there is no card in the slot then |
| 886 | * timeout immediatly. |
| 887 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 888 | if (!(host->flags & WBSD_FCARD_PRESENT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | cmd->error = MMC_ERR_TIMEOUT; |
| 890 | goto done; |
| 891 | } |
| 892 | |
| 893 | /* |
| 894 | * Does the request include data? |
| 895 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 896 | if (cmd->data) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | wbsd_prepare_data(host, cmd->data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 898 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | if (cmd->data->error != MMC_ERR_NONE) |
| 900 | goto done; |
| 901 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 902 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 903 | wbsd_send_command(host, cmd); |
| 904 | |
| 905 | /* |
| 906 | * If this is a data transfer the request |
| 907 | * will be finished after the data has |
| 908 | * transfered. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 909 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 910 | if (cmd->data && (cmd->error == MMC_ERR_NONE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | /* |
| 912 | * Dirty fix for hardware bug. |
| 913 | */ |
| 914 | if (host->dma == -1) |
| 915 | tasklet_schedule(&host->fifo_tasklet); |
| 916 | |
| 917 | spin_unlock_bh(&host->lock); |
| 918 | |
| 919 | return; |
| 920 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 921 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 922 | done: |
| 923 | wbsd_request_end(host, mrq); |
| 924 | |
| 925 | spin_unlock_bh(&host->lock); |
| 926 | } |
| 927 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 928 | static void wbsd_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 930 | struct wbsd_host *host = mmc_priv(mmc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | u8 clk, setup, pwr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 932 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | spin_lock_bh(&host->lock); |
| 934 | |
| 935 | /* |
| 936 | * Reset the chip on each power off. |
| 937 | * Should clear out any weird states. |
| 938 | */ |
| 939 | if (ios->power_mode == MMC_POWER_OFF) |
| 940 | wbsd_init_device(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 941 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | if (ios->clock >= 24000000) |
| 943 | clk = WBSD_CLK_24M; |
| 944 | else if (ios->clock >= 16000000) |
| 945 | clk = WBSD_CLK_16M; |
| 946 | else if (ios->clock >= 12000000) |
| 947 | clk = WBSD_CLK_12M; |
| 948 | else |
| 949 | clk = WBSD_CLK_375K; |
| 950 | |
| 951 | /* |
| 952 | * Only write to the clock register when |
| 953 | * there is an actual change. |
| 954 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 955 | if (clk != host->clk) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | wbsd_write_index(host, WBSD_IDX_CLK, clk); |
| 957 | host->clk = clk; |
| 958 | } |
| 959 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 960 | /* |
| 961 | * Power up card. |
| 962 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 963 | if (ios->power_mode != MMC_POWER_OFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | pwr = inb(host->base + WBSD_CSR); |
| 965 | pwr &= ~WBSD_POWER_N; |
| 966 | outb(pwr, host->base + WBSD_CSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 967 | } |
| 968 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 969 | /* |
| 970 | * MMC cards need to have pin 1 high during init. |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 971 | * It wreaks havoc with the card detection though so |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 972 | * that needs to be disabled. |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 973 | */ |
| 974 | setup = wbsd_read_index(host, WBSD_IDX_SETUP); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 975 | if (ios->chip_select == MMC_CS_HIGH) { |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 976 | BUG_ON(ios->bus_width != MMC_BUS_WIDTH_1); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 977 | setup |= WBSD_DAT3_H; |
| 978 | host->flags |= WBSD_FIGNORE_DETECT; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 979 | } else { |
| 980 | if (setup & WBSD_DAT3_H) { |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 981 | setup &= ~WBSD_DAT3_H; |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 982 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 983 | /* |
| 984 | * We cannot resume card detection immediatly |
| 985 | * because of capacitance and delays in the chip. |
| 986 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 987 | mod_timer(&host->ignore_timer, jiffies + HZ / 100); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 988 | } |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 989 | } |
| 990 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 991 | |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 992 | /* |
| 993 | * Store bus width for later. Will be used when |
| 994 | * setting up the data transfer. |
| 995 | */ |
| 996 | host->bus_width = ios->bus_width; |
| 997 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | spin_unlock_bh(&host->lock); |
| 999 | } |
| 1000 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1001 | static int wbsd_get_ro(struct mmc_host *mmc) |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 1002 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1003 | struct wbsd_host *host = mmc_priv(mmc); |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 1004 | u8 csr; |
| 1005 | |
| 1006 | spin_lock_bh(&host->lock); |
| 1007 | |
| 1008 | csr = inb(host->base + WBSD_CSR); |
| 1009 | csr |= WBSD_MSLED; |
| 1010 | outb(csr, host->base + WBSD_CSR); |
| 1011 | |
| 1012 | mdelay(1); |
| 1013 | |
| 1014 | csr = inb(host->base + WBSD_CSR); |
| 1015 | csr &= ~WBSD_MSLED; |
| 1016 | outb(csr, host->base + WBSD_CSR); |
| 1017 | |
| 1018 | spin_unlock_bh(&host->lock); |
| 1019 | |
| 1020 | return csr & WBSD_WRPT; |
| 1021 | } |
| 1022 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1023 | static struct mmc_host_ops wbsd_ops = { |
| 1024 | .request = wbsd_request, |
| 1025 | .set_ios = wbsd_set_ios, |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 1026 | .get_ro = wbsd_get_ro, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1027 | }; |
| 1028 | |
| 1029 | /*****************************************************************************\ |
| 1030 | * * |
| 1031 | * Interrupt handling * |
| 1032 | * * |
| 1033 | \*****************************************************************************/ |
| 1034 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | /* |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1036 | * Helper function to reset detection ignore |
| 1037 | */ |
| 1038 | |
| 1039 | static void wbsd_reset_ignore(unsigned long data) |
| 1040 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1041 | struct wbsd_host *host = (struct wbsd_host *)data; |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1042 | |
| 1043 | BUG_ON(host == NULL); |
| 1044 | |
| 1045 | DBG("Resetting card detection ignore\n"); |
| 1046 | |
| 1047 | spin_lock_bh(&host->lock); |
| 1048 | |
| 1049 | host->flags &= ~WBSD_FIGNORE_DETECT; |
| 1050 | |
| 1051 | /* |
| 1052 | * Card status might have changed during the |
| 1053 | * blackout. |
| 1054 | */ |
| 1055 | tasklet_schedule(&host->card_tasklet); |
| 1056 | |
| 1057 | spin_unlock_bh(&host->lock); |
| 1058 | } |
| 1059 | |
| 1060 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1061 | * Tasklets |
| 1062 | */ |
| 1063 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1064 | static inline struct mmc_data *wbsd_get_data(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | { |
| 1066 | WARN_ON(!host->mrq); |
| 1067 | if (!host->mrq) |
| 1068 | return NULL; |
| 1069 | |
| 1070 | WARN_ON(!host->mrq->cmd); |
| 1071 | if (!host->mrq->cmd) |
| 1072 | return NULL; |
| 1073 | |
| 1074 | WARN_ON(!host->mrq->cmd->data); |
| 1075 | if (!host->mrq->cmd->data) |
| 1076 | return NULL; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1077 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1078 | return host->mrq->cmd->data; |
| 1079 | } |
| 1080 | |
| 1081 | static void wbsd_tasklet_card(unsigned long param) |
| 1082 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1083 | struct wbsd_host *host = (struct wbsd_host *)param; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | u8 csr; |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1085 | int delay = -1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1086 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1087 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1088 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1089 | if (host->flags & WBSD_FIGNORE_DETECT) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1090 | spin_unlock(&host->lock); |
| 1091 | return; |
| 1092 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1093 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1094 | csr = inb(host->base + WBSD_CSR); |
| 1095 | WARN_ON(csr == 0xff); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1096 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1097 | if (csr & WBSD_CARDPRESENT) { |
| 1098 | if (!(host->flags & WBSD_FCARD_PRESENT)) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1099 | DBG("Card inserted\n"); |
| 1100 | host->flags |= WBSD_FCARD_PRESENT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1101 | |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1102 | delay = 500; |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1103 | } |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1104 | } else if (host->flags & WBSD_FCARD_PRESENT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | DBG("Card removed\n"); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1106 | host->flags &= ~WBSD_FCARD_PRESENT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1107 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1108 | if (host->mrq) { |
Pierre Ossman | d191634 | 2005-11-05 10:36:35 +0000 | [diff] [blame] | 1109 | printk(KERN_ERR "%s: Card removed during transfer!\n", |
| 1110 | mmc_hostname(host->mmc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | wbsd_reset(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1113 | host->mrq->cmd->error = MMC_ERR_FAILED; |
| 1114 | tasklet_schedule(&host->finish_tasklet); |
| 1115 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1116 | |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1117 | delay = 0; |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1118 | } |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1119 | |
| 1120 | /* |
| 1121 | * Unlock first since we might get a call back. |
| 1122 | */ |
| 1123 | |
| 1124 | spin_unlock(&host->lock); |
| 1125 | |
| 1126 | if (delay != -1) |
| 1127 | mmc_detect_change(host->mmc, msecs_to_jiffies(delay)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | } |
| 1129 | |
| 1130 | static void wbsd_tasklet_fifo(unsigned long param) |
| 1131 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1132 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1133 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1134 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1135 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | if (!host->mrq) |
| 1138 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | data = wbsd_get_data(host); |
| 1141 | if (!data) |
| 1142 | goto end; |
| 1143 | |
| 1144 | if (data->flags & MMC_DATA_WRITE) |
| 1145 | wbsd_fill_fifo(host); |
| 1146 | else |
| 1147 | wbsd_empty_fifo(host); |
| 1148 | |
| 1149 | /* |
| 1150 | * Done? |
| 1151 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1152 | if (host->size == data->bytes_xfered) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | wbsd_write_index(host, WBSD_IDX_FIFOEN, 0); |
| 1154 | tasklet_schedule(&host->finish_tasklet); |
| 1155 | } |
| 1156 | |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1157 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | spin_unlock(&host->lock); |
| 1159 | } |
| 1160 | |
| 1161 | static void wbsd_tasklet_crc(unsigned long param) |
| 1162 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1163 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1164 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1167 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1168 | if (!host->mrq) |
| 1169 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1170 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1171 | data = wbsd_get_data(host); |
| 1172 | if (!data) |
| 1173 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1174 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | DBGF("CRC error\n"); |
| 1176 | |
| 1177 | data->error = MMC_ERR_BADCRC; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1178 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1179 | tasklet_schedule(&host->finish_tasklet); |
| 1180 | |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1181 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | spin_unlock(&host->lock); |
| 1183 | } |
| 1184 | |
| 1185 | static void wbsd_tasklet_timeout(unsigned long param) |
| 1186 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1187 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1188 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1189 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1190 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1192 | if (!host->mrq) |
| 1193 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1194 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1195 | data = wbsd_get_data(host); |
| 1196 | if (!data) |
| 1197 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | DBGF("Timeout\n"); |
| 1200 | |
| 1201 | data->error = MMC_ERR_TIMEOUT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1202 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | tasklet_schedule(&host->finish_tasklet); |
| 1204 | |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1205 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1206 | spin_unlock(&host->lock); |
| 1207 | } |
| 1208 | |
| 1209 | static void wbsd_tasklet_finish(unsigned long param) |
| 1210 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1211 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1212 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1213 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1215 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1216 | WARN_ON(!host->mrq); |
| 1217 | if (!host->mrq) |
| 1218 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1219 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1220 | data = wbsd_get_data(host); |
| 1221 | if (!data) |
| 1222 | goto end; |
| 1223 | |
| 1224 | wbsd_finish_data(host, data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1225 | |
| 1226 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | spin_unlock(&host->lock); |
| 1228 | } |
| 1229 | |
| 1230 | static void wbsd_tasklet_block(unsigned long param) |
| 1231 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1232 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1233 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1234 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | spin_lock(&host->lock); |
| 1236 | |
| 1237 | if ((wbsd_read_index(host, WBSD_IDX_CRCSTATUS) & WBSD_CRC_MASK) != |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1238 | WBSD_CRC_OK) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1239 | data = wbsd_get_data(host); |
| 1240 | if (!data) |
| 1241 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1242 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1243 | DBGF("CRC error\n"); |
| 1244 | |
| 1245 | data->error = MMC_ERR_BADCRC; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1246 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | tasklet_schedule(&host->finish_tasklet); |
| 1248 | } |
| 1249 | |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1250 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1251 | spin_unlock(&host->lock); |
| 1252 | } |
| 1253 | |
| 1254 | /* |
| 1255 | * Interrupt handling |
| 1256 | */ |
| 1257 | |
| 1258 | static irqreturn_t wbsd_irq(int irq, void *dev_id, struct pt_regs *regs) |
| 1259 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1260 | struct wbsd_host *host = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | int isr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1262 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1263 | isr = inb(host->base + WBSD_ISR); |
| 1264 | |
| 1265 | /* |
| 1266 | * Was it actually our hardware that caused the interrupt? |
| 1267 | */ |
| 1268 | if (isr == 0xff || isr == 0x00) |
| 1269 | return IRQ_NONE; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1270 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | host->isr |= isr; |
| 1272 | |
| 1273 | /* |
| 1274 | * Schedule tasklets as needed. |
| 1275 | */ |
| 1276 | if (isr & WBSD_INT_CARD) |
| 1277 | tasklet_schedule(&host->card_tasklet); |
| 1278 | if (isr & WBSD_INT_FIFO_THRE) |
| 1279 | tasklet_schedule(&host->fifo_tasklet); |
| 1280 | if (isr & WBSD_INT_CRC) |
| 1281 | tasklet_hi_schedule(&host->crc_tasklet); |
| 1282 | if (isr & WBSD_INT_TIMEOUT) |
| 1283 | tasklet_hi_schedule(&host->timeout_tasklet); |
| 1284 | if (isr & WBSD_INT_BUSYEND) |
| 1285 | tasklet_hi_schedule(&host->block_tasklet); |
| 1286 | if (isr & WBSD_INT_TC) |
| 1287 | tasklet_schedule(&host->finish_tasklet); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1288 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | return IRQ_HANDLED; |
| 1290 | } |
| 1291 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1292 | /*****************************************************************************\ |
| 1293 | * * |
| 1294 | * Device initialisation and shutdown * |
| 1295 | * * |
| 1296 | \*****************************************************************************/ |
| 1297 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1298 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1299 | * Allocate/free MMC structure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1300 | */ |
| 1301 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1302 | static int __devinit wbsd_alloc_mmc(struct device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1303 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1304 | struct mmc_host *mmc; |
| 1305 | struct wbsd_host *host; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1306 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1307 | /* |
| 1308 | * Allocate MMC structure. |
| 1309 | */ |
| 1310 | mmc = mmc_alloc_host(sizeof(struct wbsd_host), dev); |
| 1311 | if (!mmc) |
| 1312 | return -ENOMEM; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1313 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1314 | host = mmc_priv(mmc); |
| 1315 | host->mmc = mmc; |
| 1316 | |
| 1317 | host->dma = -1; |
| 1318 | |
| 1319 | /* |
| 1320 | * Set host parameters. |
| 1321 | */ |
| 1322 | mmc->ops = &wbsd_ops; |
| 1323 | mmc->f_min = 375000; |
| 1324 | mmc->f_max = 24000000; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1325 | mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 1326 | mmc->caps = MMC_CAP_4_BIT_DATA; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1327 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1328 | spin_lock_init(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1329 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1330 | /* |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1331 | * Set up timers |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1332 | */ |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1333 | init_timer(&host->ignore_timer); |
| 1334 | host->ignore_timer.data = (unsigned long)host; |
| 1335 | host->ignore_timer.function = wbsd_reset_ignore; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1336 | |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1337 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1338 | * Maximum number of segments. Worst case is one sector per segment |
| 1339 | * so this will be 64kB/512. |
| 1340 | */ |
| 1341 | mmc->max_hw_segs = 128; |
| 1342 | mmc->max_phys_segs = 128; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1343 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1344 | /* |
| 1345 | * Maximum number of sectors in one transfer. Also limited by 64kB |
| 1346 | * buffer. |
| 1347 | */ |
| 1348 | mmc->max_sectors = 128; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1349 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1350 | /* |
| 1351 | * Maximum segment size. Could be one segment with the maximum number |
| 1352 | * of segments. |
| 1353 | */ |
| 1354 | mmc->max_seg_size = mmc->max_sectors * 512; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1355 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1356 | dev_set_drvdata(dev, mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1357 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1358 | return 0; |
| 1359 | } |
| 1360 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1361 | static void __devexit wbsd_free_mmc(struct device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1362 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1363 | struct mmc_host *mmc; |
| 1364 | struct wbsd_host *host; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1365 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1366 | mmc = dev_get_drvdata(dev); |
| 1367 | if (!mmc) |
| 1368 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1369 | |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1370 | host = mmc_priv(mmc); |
| 1371 | BUG_ON(host == NULL); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1372 | |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1373 | del_timer_sync(&host->ignore_timer); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1374 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1375 | mmc_free_host(mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1376 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1377 | dev_set_drvdata(dev, NULL); |
| 1378 | } |
| 1379 | |
| 1380 | /* |
| 1381 | * Scan for known chip id:s |
| 1382 | */ |
| 1383 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1384 | static int __devinit wbsd_scan(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | { |
| 1386 | int i, j, k; |
| 1387 | int id; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1388 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | /* |
| 1390 | * Iterate through all ports, all codes to |
| 1391 | * find hardware that is in our known list. |
| 1392 | */ |
Dmitry Torokhov | 63648fb | 2006-01-03 22:56:56 +0000 | [diff] [blame] | 1393 | for (i = 0; i < ARRAY_SIZE(config_ports); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | if (!request_region(config_ports[i], 2, DRIVER_NAME)) |
| 1395 | continue; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1396 | |
Dmitry Torokhov | 63648fb | 2006-01-03 22:56:56 +0000 | [diff] [blame] | 1397 | for (j = 0; j < ARRAY_SIZE(unlock_codes); j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | id = 0xFFFF; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1399 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1400 | host->config = config_ports[i]; |
| 1401 | host->unlock_code = unlock_codes[j]; |
| 1402 | |
| 1403 | wbsd_unlock_config(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1404 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | outb(WBSD_CONF_ID_HI, config_ports[i]); |
| 1406 | id = inb(config_ports[i] + 1) << 8; |
| 1407 | |
| 1408 | outb(WBSD_CONF_ID_LO, config_ports[i]); |
| 1409 | id |= inb(config_ports[i] + 1); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1410 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1411 | wbsd_lock_config(host); |
| 1412 | |
Dmitry Torokhov | 63648fb | 2006-01-03 22:56:56 +0000 | [diff] [blame] | 1413 | for (k = 0; k < ARRAY_SIZE(valid_ids); k++) { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1414 | if (id == valid_ids[k]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | host->chip_id = id; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1416 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1417 | return 0; |
| 1418 | } |
| 1419 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1420 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1421 | if (id != 0xFFFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1422 | DBG("Unknown hardware (id %x) found at %x\n", |
| 1423 | id, config_ports[i]); |
| 1424 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1426 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1427 | release_region(config_ports[i], 2); |
| 1428 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1429 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1430 | host->config = 0; |
| 1431 | host->unlock_code = 0; |
| 1432 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | return -ENODEV; |
| 1434 | } |
| 1435 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1436 | /* |
| 1437 | * Allocate/free io port ranges |
| 1438 | */ |
| 1439 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1440 | static int __devinit wbsd_request_region(struct wbsd_host *host, int base) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | { |
| 1442 | if (io & 0x7) |
| 1443 | return -EINVAL; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1444 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1445 | if (!request_region(base, 8, DRIVER_NAME)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1446 | return -EIO; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1447 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | host->base = io; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1449 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | return 0; |
| 1451 | } |
| 1452 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1453 | static void __devexit wbsd_release_regions(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1454 | { |
| 1455 | if (host->base) |
| 1456 | release_region(host->base, 8); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1457 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1458 | host->base = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | |
| 1460 | if (host->config) |
| 1461 | release_region(host->config, 2); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1462 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1463 | host->config = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | } |
| 1465 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1466 | /* |
| 1467 | * Allocate/free DMA port and buffer |
| 1468 | */ |
| 1469 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1470 | static void __devinit wbsd_request_dma(struct wbsd_host *host, int dma) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | if (dma < 0) |
| 1473 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | if (request_dma(dma, DRIVER_NAME)) |
| 1476 | goto err; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1477 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1478 | /* |
| 1479 | * We need to allocate a special buffer in |
| 1480 | * order for ISA to be able to DMA to it. |
| 1481 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1482 | host->dma_buffer = kmalloc(WBSD_DMA_SIZE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | GFP_NOIO | GFP_DMA | __GFP_REPEAT | __GFP_NOWARN); |
| 1484 | if (!host->dma_buffer) |
| 1485 | goto free; |
| 1486 | |
| 1487 | /* |
| 1488 | * Translate the address to a physical address. |
| 1489 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1490 | host->dma_addr = dma_map_single(host->mmc->dev, host->dma_buffer, |
| 1491 | WBSD_DMA_SIZE, DMA_BIDIRECTIONAL); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1492 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1493 | /* |
| 1494 | * ISA DMA must be aligned on a 64k basis. |
| 1495 | */ |
| 1496 | if ((host->dma_addr & 0xffff) != 0) |
| 1497 | goto kfree; |
| 1498 | /* |
| 1499 | * ISA cannot access memory above 16 MB. |
| 1500 | */ |
| 1501 | else if (host->dma_addr >= 0x1000000) |
| 1502 | goto kfree; |
| 1503 | |
| 1504 | host->dma = dma; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1505 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1506 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1507 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1508 | kfree: |
| 1509 | /* |
| 1510 | * If we've gotten here then there is some kind of alignment bug |
| 1511 | */ |
| 1512 | BUG_ON(1); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1513 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1514 | dma_unmap_single(host->mmc->dev, host->dma_addr, |
| 1515 | WBSD_DMA_SIZE, DMA_BIDIRECTIONAL); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1516 | host->dma_addr = (dma_addr_t)NULL; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1517 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | kfree(host->dma_buffer); |
| 1519 | host->dma_buffer = NULL; |
| 1520 | |
| 1521 | free: |
| 1522 | free_dma(dma); |
| 1523 | |
| 1524 | err: |
| 1525 | printk(KERN_WARNING DRIVER_NAME ": Unable to allocate DMA %d. " |
| 1526 | "Falling back on FIFO.\n", dma); |
| 1527 | } |
| 1528 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1529 | static void __devexit wbsd_release_dma(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1530 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1531 | if (host->dma_addr) { |
| 1532 | dma_unmap_single(host->mmc->dev, host->dma_addr, |
| 1533 | WBSD_DMA_SIZE, DMA_BIDIRECTIONAL); |
| 1534 | } |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1535 | kfree(host->dma_buffer); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1536 | if (host->dma >= 0) |
| 1537 | free_dma(host->dma); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1538 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1539 | host->dma = -1; |
| 1540 | host->dma_buffer = NULL; |
| 1541 | host->dma_addr = (dma_addr_t)NULL; |
| 1542 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1543 | |
| 1544 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1545 | * Allocate/free IRQ. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1546 | */ |
| 1547 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1548 | static int __devinit wbsd_request_irq(struct wbsd_host *host, int irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1550 | int ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1551 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1552 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | * Allocate interrupt. |
| 1554 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1555 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | ret = request_irq(irq, wbsd_irq, SA_SHIRQ, DRIVER_NAME, host); |
| 1557 | if (ret) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1558 | return ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1559 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1560 | host->irq = irq; |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1561 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1562 | /* |
| 1563 | * Set up tasklets. |
| 1564 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1565 | tasklet_init(&host->card_tasklet, wbsd_tasklet_card, |
| 1566 | (unsigned long)host); |
| 1567 | tasklet_init(&host->fifo_tasklet, wbsd_tasklet_fifo, |
| 1568 | (unsigned long)host); |
| 1569 | tasklet_init(&host->crc_tasklet, wbsd_tasklet_crc, |
| 1570 | (unsigned long)host); |
| 1571 | tasklet_init(&host->timeout_tasklet, wbsd_tasklet_timeout, |
| 1572 | (unsigned long)host); |
| 1573 | tasklet_init(&host->finish_tasklet, wbsd_tasklet_finish, |
| 1574 | (unsigned long)host); |
| 1575 | tasklet_init(&host->block_tasklet, wbsd_tasklet_block, |
| 1576 | (unsigned long)host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1577 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1578 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1579 | } |
| 1580 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1581 | static void __devexit wbsd_release_irq(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1582 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1583 | if (!host->irq) |
| 1584 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1585 | |
| 1586 | free_irq(host->irq, host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1587 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1588 | host->irq = 0; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1590 | tasklet_kill(&host->card_tasklet); |
| 1591 | tasklet_kill(&host->fifo_tasklet); |
| 1592 | tasklet_kill(&host->crc_tasklet); |
| 1593 | tasklet_kill(&host->timeout_tasklet); |
| 1594 | tasklet_kill(&host->finish_tasklet); |
| 1595 | tasklet_kill(&host->block_tasklet); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1596 | } |
| 1597 | |
| 1598 | /* |
| 1599 | * Allocate all resources for the host. |
| 1600 | */ |
| 1601 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1602 | static int __devinit wbsd_request_resources(struct wbsd_host *host, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1603 | int base, int irq, int dma) |
| 1604 | { |
| 1605 | int ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1606 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1607 | /* |
| 1608 | * Allocate I/O ports. |
| 1609 | */ |
| 1610 | ret = wbsd_request_region(host, base); |
| 1611 | if (ret) |
| 1612 | return ret; |
| 1613 | |
| 1614 | /* |
| 1615 | * Allocate interrupt. |
| 1616 | */ |
| 1617 | ret = wbsd_request_irq(host, irq); |
| 1618 | if (ret) |
| 1619 | return ret; |
| 1620 | |
| 1621 | /* |
| 1622 | * Allocate DMA. |
| 1623 | */ |
| 1624 | wbsd_request_dma(host, dma); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1625 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1626 | return 0; |
| 1627 | } |
| 1628 | |
| 1629 | /* |
| 1630 | * Release all resources for the host. |
| 1631 | */ |
| 1632 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1633 | static void __devexit wbsd_release_resources(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1634 | { |
| 1635 | wbsd_release_dma(host); |
| 1636 | wbsd_release_irq(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1637 | wbsd_release_regions(host); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1638 | } |
| 1639 | |
| 1640 | /* |
| 1641 | * Configure the resources the chip should use. |
| 1642 | */ |
| 1643 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1644 | static void wbsd_chip_config(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1645 | { |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1646 | wbsd_unlock_config(host); |
| 1647 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1648 | /* |
| 1649 | * Reset the chip. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1650 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1651 | wbsd_write_config(host, WBSD_CONF_SWRST, 1); |
| 1652 | wbsd_write_config(host, WBSD_CONF_SWRST, 0); |
| 1653 | |
| 1654 | /* |
| 1655 | * Select SD/MMC function. |
| 1656 | */ |
| 1657 | wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1658 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1659 | /* |
| 1660 | * Set up card detection. |
| 1661 | */ |
| 1662 | wbsd_write_config(host, WBSD_CONF_PINS, WBSD_PINS_DETECT_GP11); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1663 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1664 | /* |
| 1665 | * Configure chip |
| 1666 | */ |
| 1667 | wbsd_write_config(host, WBSD_CONF_PORT_HI, host->base >> 8); |
| 1668 | wbsd_write_config(host, WBSD_CONF_PORT_LO, host->base & 0xff); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1669 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1670 | wbsd_write_config(host, WBSD_CONF_IRQ, host->irq); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1671 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1672 | if (host->dma >= 0) |
| 1673 | wbsd_write_config(host, WBSD_CONF_DRQ, host->dma); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1674 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1675 | /* |
| 1676 | * Enable and power up chip. |
| 1677 | */ |
| 1678 | wbsd_write_config(host, WBSD_CONF_ENABLE, 1); |
| 1679 | wbsd_write_config(host, WBSD_CONF_POWER, 0x20); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1680 | |
| 1681 | wbsd_lock_config(host); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1682 | } |
| 1683 | |
| 1684 | /* |
| 1685 | * Check that configured resources are correct. |
| 1686 | */ |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1687 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1688 | static int wbsd_chip_validate(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1689 | { |
| 1690 | int base, irq, dma; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1691 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1692 | wbsd_unlock_config(host); |
| 1693 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1694 | /* |
| 1695 | * Select SD/MMC function. |
| 1696 | */ |
| 1697 | wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1698 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1699 | /* |
| 1700 | * Read configuration. |
| 1701 | */ |
| 1702 | base = wbsd_read_config(host, WBSD_CONF_PORT_HI) << 8; |
| 1703 | base |= wbsd_read_config(host, WBSD_CONF_PORT_LO); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1704 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1705 | irq = wbsd_read_config(host, WBSD_CONF_IRQ); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1706 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1707 | dma = wbsd_read_config(host, WBSD_CONF_DRQ); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1708 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1709 | wbsd_lock_config(host); |
| 1710 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1711 | /* |
| 1712 | * Validate against given configuration. |
| 1713 | */ |
| 1714 | if (base != host->base) |
| 1715 | return 0; |
| 1716 | if (irq != host->irq) |
| 1717 | return 0; |
| 1718 | if ((dma != host->dma) && (host->dma != -1)) |
| 1719 | return 0; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1720 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1721 | return 1; |
| 1722 | } |
| 1723 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1724 | /* |
| 1725 | * Powers down the SD function |
| 1726 | */ |
| 1727 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1728 | static void wbsd_chip_poweroff(struct wbsd_host *host) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1729 | { |
| 1730 | wbsd_unlock_config(host); |
| 1731 | |
| 1732 | wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD); |
| 1733 | wbsd_write_config(host, WBSD_CONF_ENABLE, 0); |
| 1734 | |
| 1735 | wbsd_lock_config(host); |
| 1736 | } |
| 1737 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1738 | /*****************************************************************************\ |
| 1739 | * * |
| 1740 | * Devices setup and shutdown * |
| 1741 | * * |
| 1742 | \*****************************************************************************/ |
| 1743 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1744 | static int __devinit wbsd_init(struct device *dev, int base, int irq, int dma, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1745 | int pnp) |
| 1746 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1747 | struct wbsd_host *host = NULL; |
| 1748 | struct mmc_host *mmc = NULL; |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1749 | int ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1750 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1751 | ret = wbsd_alloc_mmc(dev); |
| 1752 | if (ret) |
| 1753 | return ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1754 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1755 | mmc = dev_get_drvdata(dev); |
| 1756 | host = mmc_priv(mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1757 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1758 | /* |
| 1759 | * Scan for hardware. |
| 1760 | */ |
| 1761 | ret = wbsd_scan(host); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1762 | if (ret) { |
| 1763 | if (pnp && (ret == -ENODEV)) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1764 | printk(KERN_WARNING DRIVER_NAME |
| 1765 | ": Unable to confirm device presence. You may " |
| 1766 | "experience lock-ups.\n"); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1767 | } else { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1768 | wbsd_free_mmc(dev); |
| 1769 | return ret; |
| 1770 | } |
| 1771 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1772 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1773 | /* |
| 1774 | * Request resources. |
| 1775 | */ |
| 1776 | ret = wbsd_request_resources(host, io, irq, dma); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1777 | if (ret) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1778 | wbsd_release_resources(host); |
| 1779 | wbsd_free_mmc(dev); |
| 1780 | return ret; |
| 1781 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1782 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1783 | /* |
| 1784 | * See if chip needs to be configured. |
| 1785 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1786 | if (pnp) { |
| 1787 | if ((host->config != 0) && !wbsd_chip_validate(host)) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1788 | printk(KERN_WARNING DRIVER_NAME |
| 1789 | ": PnP active but chip not configured! " |
| 1790 | "You probably have a buggy BIOS. " |
| 1791 | "Configuring chip manually.\n"); |
| 1792 | wbsd_chip_config(host); |
| 1793 | } |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1794 | } else |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1795 | wbsd_chip_config(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1796 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1797 | /* |
| 1798 | * Power Management stuff. No idea how this works. |
| 1799 | * Not tested. |
| 1800 | */ |
| 1801 | #ifdef CONFIG_PM |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1802 | if (host->config) { |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1803 | wbsd_unlock_config(host); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1804 | wbsd_write_config(host, WBSD_CONF_PME, 0xA0); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1805 | wbsd_lock_config(host); |
| 1806 | } |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1807 | #endif |
| 1808 | /* |
| 1809 | * Allow device to initialise itself properly. |
| 1810 | */ |
| 1811 | mdelay(5); |
| 1812 | |
| 1813 | /* |
| 1814 | * Reset the chip into a known state. |
| 1815 | */ |
| 1816 | wbsd_init_device(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1817 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1818 | mmc_add_host(mmc); |
| 1819 | |
Russell King | d366b64 | 2005-08-19 09:40:08 +0100 | [diff] [blame] | 1820 | printk(KERN_INFO "%s: W83L51xD", mmc_hostname(mmc)); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1821 | if (host->chip_id != 0) |
| 1822 | printk(" id %x", (int)host->chip_id); |
| 1823 | printk(" at 0x%x irq %d", (int)host->base, (int)host->irq); |
| 1824 | if (host->dma >= 0) |
| 1825 | printk(" dma %d", (int)host->dma); |
| 1826 | else |
| 1827 | printk(" FIFO"); |
| 1828 | if (pnp) |
| 1829 | printk(" PnP"); |
| 1830 | printk("\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1831 | |
| 1832 | return 0; |
| 1833 | } |
| 1834 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1835 | static void __devexit wbsd_shutdown(struct device *dev, int pnp) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1836 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1837 | struct mmc_host *mmc = dev_get_drvdata(dev); |
| 1838 | struct wbsd_host *host; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1839 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1840 | if (!mmc) |
| 1841 | return; |
| 1842 | |
| 1843 | host = mmc_priv(mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1844 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1845 | mmc_remove_host(mmc); |
| 1846 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1847 | /* |
| 1848 | * Power down the SD/MMC function. |
| 1849 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1850 | if (!pnp) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1851 | wbsd_chip_poweroff(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1852 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1853 | wbsd_release_resources(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1854 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1855 | wbsd_free_mmc(dev); |
| 1856 | } |
| 1857 | |
| 1858 | /* |
| 1859 | * Non-PnP |
| 1860 | */ |
| 1861 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1862 | static int __devinit wbsd_probe(struct platform_device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1863 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1864 | return wbsd_init(&dev->dev, io, irq, dma, 0); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1865 | } |
| 1866 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1867 | static int __devexit wbsd_remove(struct platform_device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1868 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1869 | wbsd_shutdown(&dev->dev, 0); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1870 | |
| 1871 | return 0; |
| 1872 | } |
| 1873 | |
| 1874 | /* |
| 1875 | * PnP |
| 1876 | */ |
| 1877 | |
| 1878 | #ifdef CONFIG_PNP |
| 1879 | |
| 1880 | static int __devinit |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1881 | wbsd_pnp_probe(struct pnp_dev *pnpdev, const struct pnp_device_id *dev_id) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1882 | { |
| 1883 | int io, irq, dma; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1884 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1885 | /* |
| 1886 | * Get resources from PnP layer. |
| 1887 | */ |
| 1888 | io = pnp_port_start(pnpdev, 0); |
| 1889 | irq = pnp_irq(pnpdev, 0); |
| 1890 | if (pnp_dma_valid(pnpdev, 0)) |
| 1891 | dma = pnp_dma(pnpdev, 0); |
| 1892 | else |
| 1893 | dma = -1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1894 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1895 | DBGF("PnP resources: port %3x irq %d dma %d\n", io, irq, dma); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1896 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1897 | return wbsd_init(&pnpdev->dev, io, irq, dma, 1); |
| 1898 | } |
| 1899 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1900 | static void __devexit wbsd_pnp_remove(struct pnp_dev *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1901 | { |
| 1902 | wbsd_shutdown(&dev->dev, 1); |
| 1903 | } |
| 1904 | |
| 1905 | #endif /* CONFIG_PNP */ |
| 1906 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1907 | /* |
| 1908 | * Power management |
| 1909 | */ |
| 1910 | |
| 1911 | #ifdef CONFIG_PM |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1912 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1913 | static int wbsd_suspend(struct wbsd_host *host, pm_message_t state) |
| 1914 | { |
| 1915 | BUG_ON(host == NULL); |
| 1916 | |
| 1917 | return mmc_suspend_host(host->mmc, state); |
| 1918 | } |
| 1919 | |
| 1920 | static int wbsd_resume(struct wbsd_host *host) |
| 1921 | { |
| 1922 | BUG_ON(host == NULL); |
| 1923 | |
| 1924 | wbsd_init_device(host); |
| 1925 | |
| 1926 | return mmc_resume_host(host->mmc); |
| 1927 | } |
| 1928 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1929 | static int wbsd_platform_suspend(struct platform_device *dev, |
| 1930 | pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1931 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1932 | struct mmc_host *mmc = platform_get_drvdata(dev); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1933 | struct wbsd_host *host; |
| 1934 | int ret; |
| 1935 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1936 | if (mmc == NULL) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1937 | return 0; |
| 1938 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1939 | DBGF("Suspending...\n"); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1940 | |
| 1941 | host = mmc_priv(mmc); |
| 1942 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1943 | ret = wbsd_suspend(host, state); |
| 1944 | if (ret) |
| 1945 | return ret; |
| 1946 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1947 | wbsd_chip_poweroff(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1948 | |
| 1949 | return 0; |
| 1950 | } |
| 1951 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1952 | static int wbsd_platform_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1954 | struct mmc_host *mmc = platform_get_drvdata(dev); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1955 | struct wbsd_host *host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1957 | if (mmc == NULL) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1958 | return 0; |
| 1959 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1960 | DBGF("Resuming...\n"); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1961 | |
| 1962 | host = mmc_priv(mmc); |
| 1963 | |
| 1964 | wbsd_chip_config(host); |
| 1965 | |
| 1966 | /* |
| 1967 | * Allow device to initialise itself properly. |
| 1968 | */ |
| 1969 | mdelay(5); |
| 1970 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1971 | return wbsd_resume(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1972 | } |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1973 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1974 | #ifdef CONFIG_PNP |
| 1975 | |
| 1976 | static int wbsd_pnp_suspend(struct pnp_dev *pnp_dev, pm_message_t state) |
| 1977 | { |
| 1978 | struct mmc_host *mmc = dev_get_drvdata(&pnp_dev->dev); |
| 1979 | struct wbsd_host *host; |
| 1980 | |
| 1981 | if (mmc == NULL) |
| 1982 | return 0; |
| 1983 | |
| 1984 | DBGF("Suspending...\n"); |
| 1985 | |
| 1986 | host = mmc_priv(mmc); |
| 1987 | |
| 1988 | return wbsd_suspend(host, state); |
| 1989 | } |
| 1990 | |
| 1991 | static int wbsd_pnp_resume(struct pnp_dev *pnp_dev) |
| 1992 | { |
| 1993 | struct mmc_host *mmc = dev_get_drvdata(&pnp_dev->dev); |
| 1994 | struct wbsd_host *host; |
| 1995 | |
| 1996 | if (mmc == NULL) |
| 1997 | return 0; |
| 1998 | |
| 1999 | DBGF("Resuming...\n"); |
| 2000 | |
| 2001 | host = mmc_priv(mmc); |
| 2002 | |
| 2003 | /* |
| 2004 | * See if chip needs to be configured. |
| 2005 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2006 | if (host->config != 0) { |
| 2007 | if (!wbsd_chip_validate(host)) { |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 2008 | printk(KERN_WARNING DRIVER_NAME |
| 2009 | ": PnP active but chip not configured! " |
| 2010 | "You probably have a buggy BIOS. " |
| 2011 | "Configuring chip manually.\n"); |
| 2012 | wbsd_chip_config(host); |
| 2013 | } |
| 2014 | } |
| 2015 | |
| 2016 | /* |
| 2017 | * Allow device to initialise itself properly. |
| 2018 | */ |
| 2019 | mdelay(5); |
| 2020 | |
| 2021 | return wbsd_resume(host); |
| 2022 | } |
| 2023 | |
| 2024 | #endif /* CONFIG_PNP */ |
| 2025 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 2026 | #else /* CONFIG_PM */ |
| 2027 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 2028 | #define wbsd_platform_suspend NULL |
| 2029 | #define wbsd_platform_resume NULL |
| 2030 | |
| 2031 | #define wbsd_pnp_suspend NULL |
| 2032 | #define wbsd_pnp_resume NULL |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 2033 | |
| 2034 | #endif /* CONFIG_PM */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2035 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2036 | static struct platform_device *wbsd_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2038 | static struct platform_driver wbsd_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | .probe = wbsd_probe, |
Pierre Ossman | 93968d7 | 2005-11-09 23:21:06 +0000 | [diff] [blame] | 2040 | .remove = __devexit_p(wbsd_remove), |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 2041 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 2042 | .suspend = wbsd_platform_suspend, |
| 2043 | .resume = wbsd_platform_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2044 | .driver = { |
| 2045 | .name = DRIVER_NAME, |
| 2046 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2047 | }; |
| 2048 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2049 | #ifdef CONFIG_PNP |
| 2050 | |
| 2051 | static struct pnp_driver wbsd_pnp_driver = { |
| 2052 | .name = DRIVER_NAME, |
| 2053 | .id_table = pnp_dev_table, |
| 2054 | .probe = wbsd_pnp_probe, |
Pierre Ossman | 93968d7 | 2005-11-09 23:21:06 +0000 | [diff] [blame] | 2055 | .remove = __devexit_p(wbsd_pnp_remove), |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 2056 | |
| 2057 | .suspend = wbsd_pnp_suspend, |
| 2058 | .resume = wbsd_pnp_resume, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2059 | }; |
| 2060 | |
| 2061 | #endif /* CONFIG_PNP */ |
| 2062 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2063 | /* |
| 2064 | * Module loading/unloading |
| 2065 | */ |
| 2066 | |
| 2067 | static int __init wbsd_drv_init(void) |
| 2068 | { |
| 2069 | int result; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 2070 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | printk(KERN_INFO DRIVER_NAME |
| 2072 | ": Winbond W83L51xD SD/MMC card interface driver, " |
| 2073 | DRIVER_VERSION "\n"); |
| 2074 | printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2075 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2076 | #ifdef CONFIG_PNP |
| 2077 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2078 | if (!nopnp) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2079 | result = pnp_register_driver(&wbsd_pnp_driver); |
| 2080 | if (result < 0) |
| 2081 | return result; |
| 2082 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 2083 | #endif /* CONFIG_PNP */ |
| 2084 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2085 | if (nopnp) { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2086 | result = platform_driver_register(&wbsd_driver); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2087 | if (result < 0) |
| 2088 | return result; |
| 2089 | |
Dmitry Torokhov | 21500bb | 2006-01-03 22:57:35 +0000 | [diff] [blame] | 2090 | wbsd_device = platform_device_alloc(DRIVER_NAME, -1); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2091 | if (!wbsd_device) { |
Dmitry Torokhov | 21500bb | 2006-01-03 22:57:35 +0000 | [diff] [blame] | 2092 | platform_driver_unregister(&wbsd_driver); |
| 2093 | return -ENOMEM; |
| 2094 | } |
| 2095 | |
| 2096 | result = platform_device_add(wbsd_device); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2097 | if (result) { |
Dmitry Torokhov | 21500bb | 2006-01-03 22:57:35 +0000 | [diff] [blame] | 2098 | platform_device_put(wbsd_device); |
| 2099 | platform_driver_unregister(&wbsd_driver); |
| 2100 | return result; |
| 2101 | } |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2102 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | |
| 2104 | return 0; |
| 2105 | } |
| 2106 | |
| 2107 | static void __exit wbsd_drv_exit(void) |
| 2108 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2109 | #ifdef CONFIG_PNP |
| 2110 | |
| 2111 | if (!nopnp) |
| 2112 | pnp_unregister_driver(&wbsd_pnp_driver); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 2113 | |
| 2114 | #endif /* CONFIG_PNP */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2115 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2116 | if (nopnp) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2117 | platform_device_unregister(wbsd_device); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 2118 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2119 | platform_driver_unregister(&wbsd_driver); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2120 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2121 | |
| 2122 | DBG("unloaded\n"); |
| 2123 | } |
| 2124 | |
| 2125 | module_init(wbsd_drv_init); |
| 2126 | module_exit(wbsd_drv_exit); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2127 | #ifdef CONFIG_PNP |
| 2128 | module_param(nopnp, uint, 0444); |
| 2129 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | module_param(io, uint, 0444); |
| 2131 | module_param(irq, uint, 0444); |
| 2132 | module_param(dma, int, 0444); |
| 2133 | |
| 2134 | MODULE_LICENSE("GPL"); |
Pierre Ossman | de1d09e | 2005-11-09 23:21:49 +0000 | [diff] [blame] | 2135 | MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2136 | MODULE_DESCRIPTION("Winbond W83L51xD SD/MMC card interface driver"); |
| 2137 | MODULE_VERSION(DRIVER_VERSION); |
| 2138 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2139 | #ifdef CONFIG_PNP |
| 2140 | MODULE_PARM_DESC(nopnp, "Scan for device instead of relying on PNP. (default 0)"); |
| 2141 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2142 | MODULE_PARM_DESC(io, "I/O base to allocate. Must be 8 byte aligned. (default 0x248)"); |
| 2143 | MODULE_PARM_DESC(irq, "IRQ to allocate. (default 6)"); |
| 2144 | MODULE_PARM_DESC(dma, "DMA channel to allocate. -1 for no DMA. (default 2)"); |