Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Pierre Ossman | 70f1048 | 2007-07-11 20:04:50 +0200 | [diff] [blame] | 2 | * linux/drivers/mmc/host/wbsd.c - Winbond W83L51xD SD/MMC driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 4 | * Copyright (C) 2004-2007 Pierre Ossman, All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
Pierre Ossman | 643f720 | 2006-09-30 23:27:52 -0700 | [diff] [blame] | 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or (at |
| 9 | * your option) any later version. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
| 11 | * |
| 12 | * Warning! |
| 13 | * |
| 14 | * Changes to the FIFO system should be done with extreme care since |
| 15 | * the hardware is full of bugs related to the FIFO. Known issues are: |
| 16 | * |
| 17 | * - FIFO size field in FSR is always zero. |
| 18 | * |
| 19 | * - FIFO interrupts tend not to work as they should. Interrupts are |
| 20 | * triggered only for full/empty events, not for threshold values. |
| 21 | * |
| 22 | * - On APIC systems the FIFO empty interrupt is sometimes lost. |
| 23 | */ |
| 24 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/module.h> |
| 26 | #include <linux/moduleparam.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/ioport.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 29 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <linux/interrupt.h> |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 31 | #include <linux/dma-mapping.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/delay.h> |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 33 | #include <linux/pnp.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/highmem.h> |
| 35 | #include <linux/mmc/host.h> |
Jens Axboe | bd6dee6 | 2007-10-24 09:01:09 +0200 | [diff] [blame] | 36 | #include <linux/scatterlist.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | |
| 38 | #include <asm/io.h> |
| 39 | #include <asm/dma.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | |
| 41 | #include "wbsd.h" |
| 42 | |
| 43 | #define DRIVER_NAME "wbsd" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #define DBG(x...) \ |
Russell King | c656317 | 2006-03-29 09:30:20 +0100 | [diff] [blame] | 46 | pr_debug(DRIVER_NAME ": " x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #define DBGF(f, x...) \ |
Russell King | c656317 | 2006-03-29 09:30:20 +0100 | [diff] [blame] | 48 | pr_debug(DRIVER_NAME " [%s()]: " f, __func__ , ##x) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 51 | * Device resources |
| 52 | */ |
| 53 | |
| 54 | #ifdef CONFIG_PNP |
| 55 | |
| 56 | static const struct pnp_device_id pnp_dev_table[] = { |
| 57 | { "WEC0517", 0 }, |
| 58 | { "WEC0518", 0 }, |
| 59 | { "", 0 }, |
| 60 | }; |
| 61 | |
| 62 | MODULE_DEVICE_TABLE(pnp, pnp_dev_table); |
| 63 | |
| 64 | #endif /* CONFIG_PNP */ |
| 65 | |
Adrian Bunk | 3eee0d0 | 2005-07-01 13:07:37 +0100 | [diff] [blame] | 66 | static const int config_ports[] = { 0x2E, 0x4E }; |
| 67 | static const int unlock_codes[] = { 0x83, 0x87 }; |
| 68 | |
| 69 | static const int valid_ids[] = { |
| 70 | 0x7112, |
| 71 | }; |
| 72 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 73 | #ifdef CONFIG_PNP |
| 74 | static unsigned int nopnp = 0; |
| 75 | #else |
| 76 | static const unsigned int nopnp = 1; |
| 77 | #endif |
| 78 | static unsigned int io = 0x248; |
| 79 | static unsigned int irq = 6; |
| 80 | static int dma = 2; |
| 81 | |
| 82 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | * Basic functions |
| 84 | */ |
| 85 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 86 | static inline void wbsd_unlock_config(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 88 | BUG_ON(host->config == 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 89 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | outb(host->unlock_code, host->config); |
| 91 | outb(host->unlock_code, host->config); |
| 92 | } |
| 93 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 94 | static inline void wbsd_lock_config(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 96 | BUG_ON(host->config == 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 97 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | outb(LOCK_CODE, host->config); |
| 99 | } |
| 100 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 101 | 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] | 102 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 103 | BUG_ON(host->config == 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | outb(reg, host->config); |
| 106 | outb(value, host->config + 1); |
| 107 | } |
| 108 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 109 | static inline u8 wbsd_read_config(struct wbsd_host *host, u8 reg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 111 | BUG_ON(host->config == 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | outb(reg, host->config); |
| 114 | return inb(host->config + 1); |
| 115 | } |
| 116 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 117 | 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] | 118 | { |
| 119 | outb(index, host->base + WBSD_IDXR); |
| 120 | outb(value, host->base + WBSD_DATAR); |
| 121 | } |
| 122 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 123 | static inline u8 wbsd_read_index(struct wbsd_host *host, u8 index) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | { |
| 125 | outb(index, host->base + WBSD_IDXR); |
| 126 | return inb(host->base + WBSD_DATAR); |
| 127 | } |
| 128 | |
| 129 | /* |
| 130 | * Common routines |
| 131 | */ |
| 132 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 133 | static void wbsd_init_device(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | { |
| 135 | u8 setup, ier; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 136 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | /* |
| 138 | * Reset chip (SD/MMC part) and fifo. |
| 139 | */ |
| 140 | setup = wbsd_read_index(host, WBSD_IDX_SETUP); |
| 141 | setup |= WBSD_FIFO_RESET | WBSD_SOFT_RESET; |
| 142 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 145 | * Set DAT3 to input |
| 146 | */ |
| 147 | setup &= ~WBSD_DAT3_H; |
| 148 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
| 149 | host->flags &= ~WBSD_FIGNORE_DETECT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 150 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 151 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | * Read back default clock. |
| 153 | */ |
| 154 | host->clk = wbsd_read_index(host, WBSD_IDX_CLK); |
| 155 | |
| 156 | /* |
| 157 | * Power down port. |
| 158 | */ |
| 159 | outb(WBSD_POWER_N, host->base + WBSD_CSR); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | /* |
| 162 | * Set maximum timeout. |
| 163 | */ |
| 164 | wbsd_write_index(host, WBSD_IDX_TAAC, 0x7F); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 167 | * Test for card presence |
| 168 | */ |
| 169 | if (inb(host->base + WBSD_CSR) & WBSD_CARDPRESENT) |
| 170 | host->flags |= WBSD_FCARD_PRESENT; |
| 171 | else |
| 172 | host->flags &= ~WBSD_FCARD_PRESENT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 173 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 174 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | * Enable interesting interrupts. |
| 176 | */ |
| 177 | ier = 0; |
| 178 | ier |= WBSD_EINT_CARD; |
| 179 | ier |= WBSD_EINT_FIFO_THRE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | ier |= WBSD_EINT_CRC; |
Pierre Ossman | 5721dbf | 2007-04-13 23:25:59 +0200 | [diff] [blame] | 181 | ier |= WBSD_EINT_TIMEOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | ier |= WBSD_EINT_TC; |
| 183 | |
| 184 | outb(ier, host->base + WBSD_EIR); |
| 185 | |
| 186 | /* |
| 187 | * Clear interrupts. |
| 188 | */ |
| 189 | inb(host->base + WBSD_ISR); |
| 190 | } |
| 191 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 192 | static void wbsd_reset(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | { |
| 194 | u8 setup; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 195 | |
Pierre Ossman | d191634 | 2005-11-05 10:36:35 +0000 | [diff] [blame] | 196 | printk(KERN_ERR "%s: Resetting chip\n", mmc_hostname(host->mmc)); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 197 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | /* |
| 199 | * Soft reset of chip (SD/MMC part). |
| 200 | */ |
| 201 | setup = wbsd_read_index(host, WBSD_IDX_SETUP); |
| 202 | setup |= WBSD_SOFT_RESET; |
| 203 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
| 204 | } |
| 205 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 206 | 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] | 207 | { |
| 208 | unsigned long dmaflags; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 209 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 210 | if (host->dma >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | /* |
| 212 | * Release ISA DMA controller. |
| 213 | */ |
| 214 | dmaflags = claim_dma_lock(); |
| 215 | disable_dma(host->dma); |
| 216 | clear_dma_ff(host->dma); |
| 217 | release_dma_lock(dmaflags); |
| 218 | |
| 219 | /* |
| 220 | * Disable DMA on host. |
| 221 | */ |
| 222 | wbsd_write_index(host, WBSD_IDX_DMA, 0); |
| 223 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 224 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | host->mrq = NULL; |
| 226 | |
| 227 | /* |
| 228 | * MMC layer might call back into the driver so first unlock. |
| 229 | */ |
| 230 | spin_unlock(&host->lock); |
| 231 | mmc_request_done(host->mmc, mrq); |
| 232 | spin_lock(&host->lock); |
| 233 | } |
| 234 | |
| 235 | /* |
| 236 | * Scatter/gather functions |
| 237 | */ |
| 238 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 239 | 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] | 240 | { |
| 241 | /* |
| 242 | * Get info. about SG list from data structure. |
| 243 | */ |
| 244 | host->cur_sg = data->sg; |
| 245 | host->num_sg = data->sg_len; |
| 246 | |
| 247 | host->offset = 0; |
| 248 | host->remain = host->cur_sg->length; |
| 249 | } |
| 250 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 251 | static inline int wbsd_next_sg(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | { |
| 253 | /* |
| 254 | * Skip to next SG entry. |
| 255 | */ |
| 256 | host->cur_sg++; |
| 257 | host->num_sg--; |
| 258 | |
| 259 | /* |
| 260 | * Any entries left? |
| 261 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 262 | if (host->num_sg > 0) { |
| 263 | host->offset = 0; |
| 264 | host->remain = host->cur_sg->length; |
| 265 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 266 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | return host->num_sg; |
| 268 | } |
| 269 | |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 270 | static inline char *wbsd_sg_to_buffer(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | { |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 272 | return sg_virt(host->cur_sg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | } |
| 274 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 275 | 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] | 276 | { |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 277 | unsigned int len, i; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 278 | struct scatterlist *sg; |
| 279 | char *dmabuf = host->dma_buffer; |
| 280 | char *sgbuf; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 281 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | sg = data->sg; |
| 283 | len = data->sg_len; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 284 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 285 | for (i = 0; i < len; i++) { |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 286 | sgbuf = sg_virt(&sg[i]); |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 287 | memcpy(dmabuf, sgbuf, sg[i].length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | dmabuf += sg[i].length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | } |
| 291 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 292 | 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] | 293 | { |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 294 | unsigned int len, i; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 295 | struct scatterlist *sg; |
| 296 | char *dmabuf = host->dma_buffer; |
| 297 | char *sgbuf; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 298 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | sg = data->sg; |
| 300 | len = data->sg_len; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 301 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 302 | for (i = 0; i < len; i++) { |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame] | 303 | sgbuf = sg_virt(&sg[i]); |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 304 | memcpy(sgbuf, dmabuf, sg[i].length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | dmabuf += sg[i].length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | } |
| 308 | |
| 309 | /* |
| 310 | * Command handling |
| 311 | */ |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 312 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 313 | static inline void wbsd_get_short_reply(struct wbsd_host *host, |
| 314 | struct mmc_command *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | { |
| 316 | /* |
| 317 | * Correct response type? |
| 318 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 319 | if (wbsd_read_index(host, WBSD_IDX_RSPLEN) != WBSD_RSP_SHORT) { |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 320 | cmd->error = -EILSEQ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | return; |
| 322 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 323 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 324 | cmd->resp[0] = wbsd_read_index(host, WBSD_IDX_RESP12) << 24; |
| 325 | cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP13) << 16; |
| 326 | cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP14) << 8; |
| 327 | cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP15) << 0; |
| 328 | cmd->resp[1] = wbsd_read_index(host, WBSD_IDX_RESP16) << 24; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 329 | } |
| 330 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 331 | static inline void wbsd_get_long_reply(struct wbsd_host *host, |
| 332 | struct mmc_command *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | { |
| 334 | int i; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 335 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | /* |
| 337 | * Correct response type? |
| 338 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 339 | if (wbsd_read_index(host, WBSD_IDX_RSPLEN) != WBSD_RSP_LONG) { |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 340 | cmd->error = -EILSEQ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | return; |
| 342 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 343 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 344 | for (i = 0; i < 4; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | cmd->resp[i] = |
| 346 | wbsd_read_index(host, WBSD_IDX_RESP1 + i * 4) << 24; |
| 347 | cmd->resp[i] |= |
| 348 | wbsd_read_index(host, WBSD_IDX_RESP2 + i * 4) << 16; |
| 349 | cmd->resp[i] |= |
| 350 | wbsd_read_index(host, WBSD_IDX_RESP3 + i * 4) << 8; |
| 351 | cmd->resp[i] |= |
| 352 | wbsd_read_index(host, WBSD_IDX_RESP4 + i * 4) << 0; |
| 353 | } |
| 354 | } |
| 355 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 356 | 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] | 357 | { |
| 358 | int i; |
| 359 | u8 status, isr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 360 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | /* |
| 362 | * Clear accumulated ISR. The interrupt routine |
| 363 | * will fill this one with events that occur during |
| 364 | * transfer. |
| 365 | */ |
| 366 | host->isr = 0; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 367 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | /* |
| 369 | * Send the command (CRC calculated by host). |
| 370 | */ |
| 371 | outb(cmd->opcode, host->base + WBSD_CMDR); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 372 | for (i = 3; i >= 0; i--) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | outb((cmd->arg >> (i * 8)) & 0xff, host->base + WBSD_CMDR); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 374 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 375 | cmd->error = 0; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 376 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | /* |
| 378 | * Wait for the request to complete. |
| 379 | */ |
| 380 | do { |
| 381 | status = wbsd_read_index(host, WBSD_IDX_STATUS); |
| 382 | } while (status & WBSD_CARDTRAFFIC); |
| 383 | |
| 384 | /* |
| 385 | * Do we expect a reply? |
| 386 | */ |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 387 | if (cmd->flags & MMC_RSP_PRESENT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | /* |
| 389 | * Read back status. |
| 390 | */ |
| 391 | isr = host->isr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 392 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | /* Card removed? */ |
| 394 | if (isr & WBSD_INT_CARD) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 395 | cmd->error = -ENOMEDIUM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | /* Timeout? */ |
| 397 | else if (isr & WBSD_INT_TIMEOUT) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 398 | cmd->error = -ETIMEDOUT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | /* CRC? */ |
| 400 | else if ((cmd->flags & MMC_RSP_CRC) && (isr & WBSD_INT_CRC)) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 401 | cmd->error = -EILSEQ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | /* All ok */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 403 | else { |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 404 | if (cmd->flags & MMC_RSP_136) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | wbsd_get_long_reply(host, cmd); |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 406 | else |
| 407 | wbsd_get_short_reply(host, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | } |
| 409 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Data functions |
| 414 | */ |
| 415 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 416 | static void wbsd_empty_fifo(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 418 | struct mmc_data *data = host->mrq->cmd->data; |
| 419 | char *buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | int i, fsr, fifo; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 421 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | /* |
| 423 | * Handle excessive data. |
| 424 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 425 | if (host->num_sg == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 427 | |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 428 | buffer = wbsd_sg_to_buffer(host) + host->offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | |
| 430 | /* |
| 431 | * Drain the fifo. This has a tendency to loop longer |
| 432 | * than the FIFO length (usually one block). |
| 433 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 434 | while (!((fsr = inb(host->base + WBSD_FSR)) & WBSD_FIFO_EMPTY)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | /* |
| 436 | * The size field in the FSR is broken so we have to |
| 437 | * do some guessing. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 438 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | if (fsr & WBSD_FIFO_FULL) |
| 440 | fifo = 16; |
| 441 | else if (fsr & WBSD_FIFO_FUTHRE) |
| 442 | fifo = 8; |
| 443 | else |
| 444 | fifo = 1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 445 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 446 | for (i = 0; i < fifo; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | *buffer = inb(host->base + WBSD_DFR); |
| 448 | buffer++; |
| 449 | host->offset++; |
| 450 | host->remain--; |
| 451 | |
| 452 | data->bytes_xfered++; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 453 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 455 | * End of scatter list entry? |
| 456 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 457 | if (host->remain == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | /* |
| 459 | * Get next entry. Check if last. |
| 460 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 461 | if (!wbsd_next_sg(host)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 463 | |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 464 | buffer = wbsd_sg_to_buffer(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | } |
| 466 | } |
| 467 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | /* |
| 470 | * This is a very dirty hack to solve a |
| 471 | * hardware problem. The chip doesn't trigger |
| 472 | * FIFO threshold interrupts properly. |
| 473 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 474 | if ((data->blocks * data->blksz - data->bytes_xfered) < 16) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | tasklet_schedule(&host->fifo_tasklet); |
| 476 | } |
| 477 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 478 | static void wbsd_fill_fifo(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 480 | struct mmc_data *data = host->mrq->cmd->data; |
| 481 | char *buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | int i, fsr, fifo; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 483 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | /* |
| 485 | * Check that we aren't being called after the |
| 486 | * entire buffer has been transfered. |
| 487 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 488 | if (host->num_sg == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | return; |
| 490 | |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 491 | buffer = wbsd_sg_to_buffer(host) + host->offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | |
| 493 | /* |
| 494 | * Fill the fifo. This has a tendency to loop longer |
| 495 | * than the FIFO length (usually one block). |
| 496 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 497 | while (!((fsr = inb(host->base + WBSD_FSR)) & WBSD_FIFO_FULL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | /* |
| 499 | * The size field in the FSR is broken so we have to |
| 500 | * do some guessing. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 501 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | if (fsr & WBSD_FIFO_EMPTY) |
| 503 | fifo = 0; |
| 504 | else if (fsr & WBSD_FIFO_EMTHRE) |
| 505 | fifo = 8; |
| 506 | else |
| 507 | fifo = 15; |
| 508 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 509 | for (i = 16; i > fifo; i--) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | outb(*buffer, host->base + WBSD_DFR); |
| 511 | buffer++; |
| 512 | host->offset++; |
| 513 | host->remain--; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 514 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | data->bytes_xfered++; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 516 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | * End of scatter list entry? |
| 519 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 520 | if (host->remain == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | /* |
| 522 | * Get next entry. Check if last. |
| 523 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 524 | if (!wbsd_next_sg(host)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 526 | |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 527 | buffer = wbsd_sg_to_buffer(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | } |
| 529 | } |
| 530 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 531 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 532 | /* |
| 533 | * The controller stops sending interrupts for |
| 534 | * 'FIFO empty' under certain conditions. So we |
| 535 | * need to be a bit more pro-active. |
| 536 | */ |
| 537 | tasklet_schedule(&host->fifo_tasklet); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | } |
| 539 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 540 | 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] | 541 | { |
| 542 | u16 blksize; |
| 543 | u8 setup; |
| 544 | unsigned long dmaflags; |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 545 | unsigned int size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | /* |
| 548 | * Calculate size. |
| 549 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 550 | size = data->blocks * data->blksz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | |
| 552 | /* |
| 553 | * Check timeout values for overflow. |
| 554 | * (Yes, some cards cause this value to overflow). |
| 555 | */ |
| 556 | if (data->timeout_ns > 127000000) |
| 557 | wbsd_write_index(host, WBSD_IDX_TAAC, 127); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 558 | else { |
| 559 | wbsd_write_index(host, WBSD_IDX_TAAC, |
| 560 | data->timeout_ns / 1000000); |
| 561 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 562 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | if (data->timeout_clks > 255) |
| 564 | wbsd_write_index(host, WBSD_IDX_NSAC, 255); |
| 565 | else |
| 566 | wbsd_write_index(host, WBSD_IDX_NSAC, data->timeout_clks); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 567 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | /* |
| 569 | * Inform the chip of how large blocks will be |
| 570 | * sent. It needs this to determine when to |
| 571 | * calculate CRC. |
| 572 | * |
| 573 | * Space for CRC must be included in the size. |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 574 | * Two bytes are needed for each data line. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 576 | if (host->bus_width == MMC_BUS_WIDTH_1) { |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 577 | blksize = data->blksz + 2; |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 578 | |
| 579 | wbsd_write_index(host, WBSD_IDX_PBSMSB, (blksize >> 4) & 0xF0); |
| 580 | wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 581 | } else if (host->bus_width == MMC_BUS_WIDTH_4) { |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 582 | blksize = data->blksz + 2 * 4; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 583 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 584 | wbsd_write_index(host, WBSD_IDX_PBSMSB, |
| 585 | ((blksize >> 4) & 0xF0) | WBSD_DATA_WIDTH); |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 586 | wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 587 | } else { |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 588 | data->error = -EINVAL; |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 589 | return; |
| 590 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | |
| 592 | /* |
| 593 | * Clear the FIFO. This is needed even for DMA |
| 594 | * transfers since the chip still uses the FIFO |
| 595 | * internally. |
| 596 | */ |
| 597 | setup = wbsd_read_index(host, WBSD_IDX_SETUP); |
| 598 | setup |= WBSD_FIFO_RESET; |
| 599 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 600 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | /* |
| 602 | * DMA transfer? |
| 603 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 604 | if (host->dma >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | /* |
| 606 | * The buffer for DMA is only 64 kB. |
| 607 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 608 | BUG_ON(size > 0x10000); |
| 609 | if (size > 0x10000) { |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 610 | data->error = -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | return; |
| 612 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 613 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | /* |
| 615 | * Transfer data from the SG list to |
| 616 | * the DMA buffer. |
| 617 | */ |
| 618 | if (data->flags & MMC_DATA_WRITE) |
| 619 | wbsd_sg_to_dma(host, data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 620 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | /* |
| 622 | * Initialise the ISA DMA controller. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 623 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | dmaflags = claim_dma_lock(); |
| 625 | disable_dma(host->dma); |
| 626 | clear_dma_ff(host->dma); |
| 627 | if (data->flags & MMC_DATA_READ) |
| 628 | set_dma_mode(host->dma, DMA_MODE_READ & ~0x40); |
| 629 | else |
| 630 | set_dma_mode(host->dma, DMA_MODE_WRITE & ~0x40); |
| 631 | set_dma_addr(host->dma, host->dma_addr); |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 632 | set_dma_count(host->dma, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | |
| 634 | enable_dma(host->dma); |
| 635 | release_dma_lock(dmaflags); |
| 636 | |
| 637 | /* |
| 638 | * Enable DMA on the host. |
| 639 | */ |
| 640 | wbsd_write_index(host, WBSD_IDX_DMA, WBSD_DMA_ENABLE); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 641 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | /* |
| 643 | * This flag is used to keep printk |
| 644 | * output to a minimum. |
| 645 | */ |
| 646 | host->firsterr = 1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 647 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | /* |
| 649 | * Initialise the SG list. |
| 650 | */ |
| 651 | wbsd_init_sg(host, data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 652 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | /* |
| 654 | * Turn off DMA. |
| 655 | */ |
| 656 | wbsd_write_index(host, WBSD_IDX_DMA, 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 657 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | /* |
| 659 | * Set up FIFO threshold levels (and fill |
| 660 | * buffer if doing a write). |
| 661 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 662 | if (data->flags & MMC_DATA_READ) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | wbsd_write_index(host, WBSD_IDX_FIFOEN, |
| 664 | WBSD_FIFOEN_FULL | 8); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 665 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | wbsd_write_index(host, WBSD_IDX_FIFOEN, |
| 667 | WBSD_FIFOEN_EMPTY | 8); |
| 668 | wbsd_fill_fifo(host); |
| 669 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 670 | } |
| 671 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 672 | data->error = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | } |
| 674 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 675 | 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] | 676 | { |
| 677 | unsigned long dmaflags; |
| 678 | int count; |
| 679 | u8 status; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 680 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | WARN_ON(host->mrq == NULL); |
| 682 | |
| 683 | /* |
| 684 | * Send a stop command if needed. |
| 685 | */ |
| 686 | if (data->stop) |
| 687 | wbsd_send_command(host, data->stop); |
| 688 | |
| 689 | /* |
| 690 | * Wait for the controller to leave data |
| 691 | * transfer state. |
| 692 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 693 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | status = wbsd_read_index(host, WBSD_IDX_STATUS); |
| 695 | } while (status & (WBSD_BLOCK_READ | WBSD_BLOCK_WRITE)); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 696 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | /* |
| 698 | * DMA transfer? |
| 699 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 700 | if (host->dma >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | /* |
| 702 | * Disable DMA on the host. |
| 703 | */ |
| 704 | wbsd_write_index(host, WBSD_IDX_DMA, 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 705 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | /* |
| 707 | * Turn of ISA DMA controller. |
| 708 | */ |
| 709 | dmaflags = claim_dma_lock(); |
| 710 | disable_dma(host->dma); |
| 711 | clear_dma_ff(host->dma); |
| 712 | count = get_dma_residue(host->dma); |
| 713 | release_dma_lock(dmaflags); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 714 | |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 715 | data->bytes_xfered = host->mrq->data->blocks * |
| 716 | host->mrq->data->blksz - count; |
| 717 | data->bytes_xfered -= data->bytes_xfered % data->blksz; |
| 718 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | /* |
| 720 | * Any leftover data? |
| 721 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 722 | if (count) { |
Pierre Ossman | d191634 | 2005-11-05 10:36:35 +0000 | [diff] [blame] | 723 | printk(KERN_ERR "%s: Incomplete DMA transfer. " |
| 724 | "%d bytes left.\n", |
| 725 | mmc_hostname(host->mmc), count); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 726 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 727 | if (!data->error) |
| 728 | data->error = -EIO; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 729 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | /* |
| 731 | * Transfer data from DMA buffer to |
| 732 | * SG list. |
| 733 | */ |
| 734 | if (data->flags & MMC_DATA_READ) |
| 735 | wbsd_dma_to_sg(host, data); |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 736 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 737 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 738 | if (data->error) { |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 739 | if (data->bytes_xfered) |
| 740 | data->bytes_xfered -= data->blksz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | } |
| 742 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 743 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | wbsd_request_end(host, host->mrq); |
| 745 | } |
| 746 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 747 | /*****************************************************************************\ |
| 748 | * * |
| 749 | * MMC layer callbacks * |
| 750 | * * |
| 751 | \*****************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 753 | static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 755 | struct wbsd_host *host = mmc_priv(mmc); |
| 756 | struct mmc_command *cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | |
| 758 | /* |
| 759 | * Disable tasklets to avoid a deadlock. |
| 760 | */ |
| 761 | spin_lock_bh(&host->lock); |
| 762 | |
| 763 | BUG_ON(host->mrq != NULL); |
| 764 | |
| 765 | cmd = mrq->cmd; |
| 766 | |
| 767 | host->mrq = mrq; |
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 | /* |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 770 | * Check that there is actually a card in the slot. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 772 | if (!(host->flags & WBSD_FCARD_PRESENT)) { |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 773 | cmd->error = -ENOMEDIUM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | goto done; |
| 775 | } |
| 776 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 777 | if (cmd->data) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | /* |
Pierre Ossman | 5ba593a | 2006-11-21 17:45:37 +0100 | [diff] [blame] | 779 | * The hardware is so delightfully stupid that it has a list |
| 780 | * of "data" commands. If a command isn't on this list, it'll |
| 781 | * just go back to the idle state and won't send any data |
| 782 | * interrupts. |
| 783 | */ |
| 784 | switch (cmd->opcode) { |
| 785 | case 11: |
| 786 | case 17: |
| 787 | case 18: |
| 788 | case 20: |
| 789 | case 24: |
| 790 | case 25: |
| 791 | case 26: |
| 792 | case 27: |
| 793 | case 30: |
| 794 | case 42: |
| 795 | case 56: |
| 796 | break; |
| 797 | |
| 798 | /* ACMDs. We don't keep track of state, so we just treat them |
| 799 | * like any other command. */ |
| 800 | case 51: |
| 801 | break; |
| 802 | |
| 803 | default: |
| 804 | #ifdef CONFIG_MMC_DEBUG |
| 805 | printk(KERN_WARNING "%s: Data command %d is not " |
| 806 | "supported by this controller.\n", |
| 807 | mmc_hostname(host->mmc), cmd->opcode); |
| 808 | #endif |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 809 | cmd->error = -EINVAL; |
Pierre Ossman | 5ba593a | 2006-11-21 17:45:37 +0100 | [diff] [blame] | 810 | |
| 811 | goto done; |
| 812 | }; |
Pierre Ossman | b2670b1 | 2007-05-01 13:35:19 +0200 | [diff] [blame] | 813 | } |
Pierre Ossman | 5ba593a | 2006-11-21 17:45:37 +0100 | [diff] [blame] | 814 | |
Pierre Ossman | b2670b1 | 2007-05-01 13:35:19 +0200 | [diff] [blame] | 815 | /* |
| 816 | * Does the request include data? |
| 817 | */ |
| 818 | if (cmd->data) { |
| 819 | wbsd_prepare_data(host, cmd->data); |
| 820 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 821 | if (cmd->data->error) |
Pierre Ossman | b2670b1 | 2007-05-01 13:35:19 +0200 | [diff] [blame] | 822 | goto done; |
| 823 | } |
| 824 | |
| 825 | wbsd_send_command(host, cmd); |
| 826 | |
| 827 | /* |
| 828 | * If this is a data transfer the request |
| 829 | * will be finished after the data has |
| 830 | * transfered. |
| 831 | */ |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 832 | if (cmd->data && !cmd->error) { |
Pierre Ossman | 5ba593a | 2006-11-21 17:45:37 +0100 | [diff] [blame] | 833 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | * Dirty fix for hardware bug. |
| 835 | */ |
| 836 | if (host->dma == -1) |
| 837 | tasklet_schedule(&host->fifo_tasklet); |
| 838 | |
| 839 | spin_unlock_bh(&host->lock); |
| 840 | |
| 841 | return; |
| 842 | } |
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 | done: |
| 845 | wbsd_request_end(host, mrq); |
| 846 | |
| 847 | spin_unlock_bh(&host->lock); |
| 848 | } |
| 849 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 850 | 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] | 851 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 852 | struct wbsd_host *host = mmc_priv(mmc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | u8 clk, setup, pwr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 854 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | spin_lock_bh(&host->lock); |
| 856 | |
| 857 | /* |
| 858 | * Reset the chip on each power off. |
| 859 | * Should clear out any weird states. |
| 860 | */ |
| 861 | if (ios->power_mode == MMC_POWER_OFF) |
| 862 | wbsd_init_device(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 863 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | if (ios->clock >= 24000000) |
| 865 | clk = WBSD_CLK_24M; |
| 866 | else if (ios->clock >= 16000000) |
| 867 | clk = WBSD_CLK_16M; |
| 868 | else if (ios->clock >= 12000000) |
| 869 | clk = WBSD_CLK_12M; |
| 870 | else |
| 871 | clk = WBSD_CLK_375K; |
| 872 | |
| 873 | /* |
| 874 | * Only write to the clock register when |
| 875 | * there is an actual change. |
| 876 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 877 | if (clk != host->clk) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | wbsd_write_index(host, WBSD_IDX_CLK, clk); |
| 879 | host->clk = clk; |
| 880 | } |
| 881 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 882 | /* |
| 883 | * Power up card. |
| 884 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 885 | if (ios->power_mode != MMC_POWER_OFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | pwr = inb(host->base + WBSD_CSR); |
| 887 | pwr &= ~WBSD_POWER_N; |
| 888 | outb(pwr, host->base + WBSD_CSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | } |
| 890 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 891 | /* |
| 892 | * MMC cards need to have pin 1 high during init. |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 893 | * It wreaks havoc with the card detection though so |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 894 | * that needs to be disabled. |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 895 | */ |
| 896 | setup = wbsd_read_index(host, WBSD_IDX_SETUP); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 897 | if (ios->chip_select == MMC_CS_HIGH) { |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 898 | BUG_ON(ios->bus_width != MMC_BUS_WIDTH_1); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 899 | setup |= WBSD_DAT3_H; |
| 900 | host->flags |= WBSD_FIGNORE_DETECT; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 901 | } else { |
| 902 | if (setup & WBSD_DAT3_H) { |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 903 | setup &= ~WBSD_DAT3_H; |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 904 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 905 | /* |
| 906 | * We cannot resume card detection immediatly |
| 907 | * because of capacitance and delays in the chip. |
| 908 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 909 | mod_timer(&host->ignore_timer, jiffies + HZ / 100); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 910 | } |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 911 | } |
| 912 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 913 | |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 914 | /* |
| 915 | * Store bus width for later. Will be used when |
| 916 | * setting up the data transfer. |
| 917 | */ |
| 918 | host->bus_width = ios->bus_width; |
| 919 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | spin_unlock_bh(&host->lock); |
| 921 | } |
| 922 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 923 | static int wbsd_get_ro(struct mmc_host *mmc) |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 924 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 925 | struct wbsd_host *host = mmc_priv(mmc); |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 926 | u8 csr; |
| 927 | |
| 928 | spin_lock_bh(&host->lock); |
| 929 | |
| 930 | csr = inb(host->base + WBSD_CSR); |
| 931 | csr |= WBSD_MSLED; |
| 932 | outb(csr, host->base + WBSD_CSR); |
| 933 | |
| 934 | mdelay(1); |
| 935 | |
| 936 | csr = inb(host->base + WBSD_CSR); |
| 937 | csr &= ~WBSD_MSLED; |
| 938 | outb(csr, host->base + WBSD_CSR); |
| 939 | |
| 940 | spin_unlock_bh(&host->lock); |
| 941 | |
| 942 | return csr & WBSD_WRPT; |
| 943 | } |
| 944 | |
David Brownell | ab7aefd | 2006-11-12 17:55:30 -0800 | [diff] [blame] | 945 | static const struct mmc_host_ops wbsd_ops = { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 946 | .request = wbsd_request, |
| 947 | .set_ios = wbsd_set_ios, |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 948 | .get_ro = wbsd_get_ro, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 949 | }; |
| 950 | |
| 951 | /*****************************************************************************\ |
| 952 | * * |
| 953 | * Interrupt handling * |
| 954 | * * |
| 955 | \*****************************************************************************/ |
| 956 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | /* |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 958 | * Helper function to reset detection ignore |
| 959 | */ |
| 960 | |
| 961 | static void wbsd_reset_ignore(unsigned long data) |
| 962 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 963 | struct wbsd_host *host = (struct wbsd_host *)data; |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 964 | |
| 965 | BUG_ON(host == NULL); |
| 966 | |
| 967 | DBG("Resetting card detection ignore\n"); |
| 968 | |
| 969 | spin_lock_bh(&host->lock); |
| 970 | |
| 971 | host->flags &= ~WBSD_FIGNORE_DETECT; |
| 972 | |
| 973 | /* |
| 974 | * Card status might have changed during the |
| 975 | * blackout. |
| 976 | */ |
| 977 | tasklet_schedule(&host->card_tasklet); |
| 978 | |
| 979 | spin_unlock_bh(&host->lock); |
| 980 | } |
| 981 | |
| 982 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | * Tasklets |
| 984 | */ |
| 985 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 986 | static inline struct mmc_data *wbsd_get_data(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | { |
| 988 | WARN_ON(!host->mrq); |
| 989 | if (!host->mrq) |
| 990 | return NULL; |
| 991 | |
| 992 | WARN_ON(!host->mrq->cmd); |
| 993 | if (!host->mrq->cmd) |
| 994 | return NULL; |
| 995 | |
| 996 | WARN_ON(!host->mrq->cmd->data); |
| 997 | if (!host->mrq->cmd->data) |
| 998 | return NULL; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 999 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | return host->mrq->cmd->data; |
| 1001 | } |
| 1002 | |
| 1003 | static void wbsd_tasklet_card(unsigned long param) |
| 1004 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1005 | struct wbsd_host *host = (struct wbsd_host *)param; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | u8 csr; |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1007 | int delay = -1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1008 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1009 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1010 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1011 | if (host->flags & WBSD_FIGNORE_DETECT) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1012 | spin_unlock(&host->lock); |
| 1013 | return; |
| 1014 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1015 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | csr = inb(host->base + WBSD_CSR); |
| 1017 | WARN_ON(csr == 0xff); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1018 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1019 | if (csr & WBSD_CARDPRESENT) { |
| 1020 | if (!(host->flags & WBSD_FCARD_PRESENT)) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1021 | DBG("Card inserted\n"); |
| 1022 | host->flags |= WBSD_FCARD_PRESENT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1023 | |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1024 | delay = 500; |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1025 | } |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1026 | } else if (host->flags & WBSD_FCARD_PRESENT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | DBG("Card removed\n"); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1028 | host->flags &= ~WBSD_FCARD_PRESENT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1029 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1030 | if (host->mrq) { |
Pierre Ossman | d191634 | 2005-11-05 10:36:35 +0000 | [diff] [blame] | 1031 | printk(KERN_ERR "%s: Card removed during transfer!\n", |
| 1032 | mmc_hostname(host->mmc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1033 | wbsd_reset(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1034 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1035 | host->mrq->cmd->error = -ENOMEDIUM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | tasklet_schedule(&host->finish_tasklet); |
| 1037 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1038 | |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1039 | delay = 0; |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1040 | } |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1041 | |
| 1042 | /* |
| 1043 | * Unlock first since we might get a call back. |
| 1044 | */ |
| 1045 | |
| 1046 | spin_unlock(&host->lock); |
| 1047 | |
| 1048 | if (delay != -1) |
| 1049 | mmc_detect_change(host->mmc, msecs_to_jiffies(delay)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | } |
| 1051 | |
| 1052 | static void wbsd_tasklet_fifo(unsigned long param) |
| 1053 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1054 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1055 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1056 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1057 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1058 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1059 | if (!host->mrq) |
| 1060 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1061 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1062 | data = wbsd_get_data(host); |
| 1063 | if (!data) |
| 1064 | goto end; |
| 1065 | |
| 1066 | if (data->flags & MMC_DATA_WRITE) |
| 1067 | wbsd_fill_fifo(host); |
| 1068 | else |
| 1069 | wbsd_empty_fifo(host); |
| 1070 | |
| 1071 | /* |
| 1072 | * Done? |
| 1073 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 1074 | if (host->num_sg == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | wbsd_write_index(host, WBSD_IDX_FIFOEN, 0); |
| 1076 | tasklet_schedule(&host->finish_tasklet); |
| 1077 | } |
| 1078 | |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1079 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1080 | spin_unlock(&host->lock); |
| 1081 | } |
| 1082 | |
| 1083 | static void wbsd_tasklet_crc(unsigned long param) |
| 1084 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1085 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1086 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1087 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1088 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1089 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | if (!host->mrq) |
| 1091 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1092 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1093 | data = wbsd_get_data(host); |
| 1094 | if (!data) |
| 1095 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1096 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1097 | DBGF("CRC error\n"); |
| 1098 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1099 | data->error = -EILSEQ; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | tasklet_schedule(&host->finish_tasklet); |
| 1102 | |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1103 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1104 | spin_unlock(&host->lock); |
| 1105 | } |
| 1106 | |
| 1107 | static void wbsd_tasklet_timeout(unsigned long param) |
| 1108 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1109 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1110 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1111 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | if (!host->mrq) |
| 1115 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1116 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1117 | data = wbsd_get_data(host); |
| 1118 | if (!data) |
| 1119 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | DBGF("Timeout\n"); |
| 1122 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1123 | data->error = -ETIMEDOUT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1124 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | tasklet_schedule(&host->finish_tasklet); |
| 1126 | |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1127 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | spin_unlock(&host->lock); |
| 1129 | } |
| 1130 | |
| 1131 | static void wbsd_tasklet_finish(unsigned long param) |
| 1132 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1133 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1134 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1135 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | WARN_ON(!host->mrq); |
| 1139 | if (!host->mrq) |
| 1140 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1141 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | data = wbsd_get_data(host); |
| 1143 | if (!data) |
| 1144 | goto end; |
| 1145 | |
| 1146 | wbsd_finish_data(host, data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1147 | |
| 1148 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1149 | spin_unlock(&host->lock); |
| 1150 | } |
| 1151 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1152 | /* |
| 1153 | * Interrupt handling |
| 1154 | */ |
| 1155 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1156 | static irqreturn_t wbsd_irq(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1158 | struct wbsd_host *host = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | int isr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1160 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | isr = inb(host->base + WBSD_ISR); |
| 1162 | |
| 1163 | /* |
| 1164 | * Was it actually our hardware that caused the interrupt? |
| 1165 | */ |
| 1166 | if (isr == 0xff || isr == 0x00) |
| 1167 | return IRQ_NONE; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | host->isr |= isr; |
| 1170 | |
| 1171 | /* |
| 1172 | * Schedule tasklets as needed. |
| 1173 | */ |
| 1174 | if (isr & WBSD_INT_CARD) |
| 1175 | tasklet_schedule(&host->card_tasklet); |
| 1176 | if (isr & WBSD_INT_FIFO_THRE) |
| 1177 | tasklet_schedule(&host->fifo_tasklet); |
| 1178 | if (isr & WBSD_INT_CRC) |
| 1179 | tasklet_hi_schedule(&host->crc_tasklet); |
| 1180 | if (isr & WBSD_INT_TIMEOUT) |
| 1181 | tasklet_hi_schedule(&host->timeout_tasklet); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | if (isr & WBSD_INT_TC) |
| 1183 | tasklet_schedule(&host->finish_tasklet); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1184 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | return IRQ_HANDLED; |
| 1186 | } |
| 1187 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1188 | /*****************************************************************************\ |
| 1189 | * * |
| 1190 | * Device initialisation and shutdown * |
| 1191 | * * |
| 1192 | \*****************************************************************************/ |
| 1193 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1194 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1195 | * Allocate/free MMC structure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1196 | */ |
| 1197 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1198 | static int __devinit wbsd_alloc_mmc(struct device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1199 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1200 | struct mmc_host *mmc; |
| 1201 | struct wbsd_host *host; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1202 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1203 | /* |
| 1204 | * Allocate MMC structure. |
| 1205 | */ |
| 1206 | mmc = mmc_alloc_host(sizeof(struct wbsd_host), dev); |
| 1207 | if (!mmc) |
| 1208 | return -ENOMEM; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1209 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1210 | host = mmc_priv(mmc); |
| 1211 | host->mmc = mmc; |
| 1212 | |
| 1213 | host->dma = -1; |
| 1214 | |
| 1215 | /* |
| 1216 | * Set host parameters. |
| 1217 | */ |
| 1218 | mmc->ops = &wbsd_ops; |
| 1219 | mmc->f_min = 375000; |
| 1220 | mmc->f_max = 24000000; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1221 | mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; |
Pierre Ossman | 255d01a | 2007-07-24 20:38:53 +0200 | [diff] [blame] | 1222 | mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1223 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1224 | spin_lock_init(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1225 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1226 | /* |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1227 | * Set up timers |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1228 | */ |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1229 | init_timer(&host->ignore_timer); |
| 1230 | host->ignore_timer.data = (unsigned long)host; |
| 1231 | host->ignore_timer.function = wbsd_reset_ignore; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1232 | |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1233 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1234 | * Maximum number of segments. Worst case is one sector per segment |
| 1235 | * so this will be 64kB/512. |
| 1236 | */ |
| 1237 | mmc->max_hw_segs = 128; |
| 1238 | mmc->max_phys_segs = 128; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1239 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1240 | /* |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 1241 | * Maximum request size. Also limited by 64KiB buffer. |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1242 | */ |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 1243 | mmc->max_req_size = 65536; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1244 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1245 | /* |
| 1246 | * Maximum segment size. Could be one segment with the maximum number |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 1247 | * of bytes. |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1248 | */ |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 1249 | mmc->max_seg_size = mmc->max_req_size; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1250 | |
Pierre Ossman | fe4a3c7 | 2006-11-21 17:54:23 +0100 | [diff] [blame] | 1251 | /* |
| 1252 | * Maximum block size. We have 12 bits (= 4095) but have to subtract |
| 1253 | * space for CRC. So the maximum is 4095 - 4*2 = 4087. |
| 1254 | */ |
| 1255 | mmc->max_blk_size = 4087; |
| 1256 | |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 1257 | /* |
| 1258 | * Maximum block count. There is no real limit so the maximum |
| 1259 | * request size will be the only restriction. |
| 1260 | */ |
| 1261 | mmc->max_blk_count = mmc->max_req_size; |
| 1262 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1263 | dev_set_drvdata(dev, mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1264 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1265 | return 0; |
| 1266 | } |
| 1267 | |
Gabriel C | b3627bb | 2007-08-02 20:20:44 +0200 | [diff] [blame] | 1268 | static void wbsd_free_mmc(struct device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1269 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1270 | struct mmc_host *mmc; |
| 1271 | struct wbsd_host *host; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1272 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1273 | mmc = dev_get_drvdata(dev); |
| 1274 | if (!mmc) |
| 1275 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1276 | |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1277 | host = mmc_priv(mmc); |
| 1278 | BUG_ON(host == NULL); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1279 | |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1280 | del_timer_sync(&host->ignore_timer); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1281 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1282 | mmc_free_host(mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1283 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1284 | dev_set_drvdata(dev, NULL); |
| 1285 | } |
| 1286 | |
| 1287 | /* |
| 1288 | * Scan for known chip id:s |
| 1289 | */ |
| 1290 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1291 | static int __devinit wbsd_scan(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1292 | { |
| 1293 | int i, j, k; |
| 1294 | int id; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1295 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | /* |
| 1297 | * Iterate through all ports, all codes to |
| 1298 | * find hardware that is in our known list. |
| 1299 | */ |
Dmitry Torokhov | 63648fb | 2006-01-03 22:56:56 +0000 | [diff] [blame] | 1300 | for (i = 0; i < ARRAY_SIZE(config_ports); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1301 | if (!request_region(config_ports[i], 2, DRIVER_NAME)) |
| 1302 | continue; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1303 | |
Dmitry Torokhov | 63648fb | 2006-01-03 22:56:56 +0000 | [diff] [blame] | 1304 | for (j = 0; j < ARRAY_SIZE(unlock_codes); j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1305 | id = 0xFFFF; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1306 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1307 | host->config = config_ports[i]; |
| 1308 | host->unlock_code = unlock_codes[j]; |
| 1309 | |
| 1310 | wbsd_unlock_config(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1311 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1312 | outb(WBSD_CONF_ID_HI, config_ports[i]); |
| 1313 | id = inb(config_ports[i] + 1) << 8; |
| 1314 | |
| 1315 | outb(WBSD_CONF_ID_LO, config_ports[i]); |
| 1316 | id |= inb(config_ports[i] + 1); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1317 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1318 | wbsd_lock_config(host); |
| 1319 | |
Dmitry Torokhov | 63648fb | 2006-01-03 22:56:56 +0000 | [diff] [blame] | 1320 | for (k = 0; k < ARRAY_SIZE(valid_ids); k++) { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1321 | if (id == valid_ids[k]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | host->chip_id = id; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1323 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | return 0; |
| 1325 | } |
| 1326 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1327 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1328 | if (id != 0xFFFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | DBG("Unknown hardware (id %x) found at %x\n", |
| 1330 | id, config_ports[i]); |
| 1331 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1333 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1334 | release_region(config_ports[i], 2); |
| 1335 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1336 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1337 | host->config = 0; |
| 1338 | host->unlock_code = 0; |
| 1339 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1340 | return -ENODEV; |
| 1341 | } |
| 1342 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1343 | /* |
| 1344 | * Allocate/free io port ranges |
| 1345 | */ |
| 1346 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1347 | static int __devinit wbsd_request_region(struct wbsd_host *host, int base) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1348 | { |
Pierre Ossman | 916f3ac | 2006-08-06 22:22:23 +0200 | [diff] [blame] | 1349 | if (base & 0x7) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1350 | return -EINVAL; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1351 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1352 | if (!request_region(base, 8, DRIVER_NAME)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1353 | return -EIO; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1354 | |
Pierre Ossman | 916f3ac | 2006-08-06 22:22:23 +0200 | [diff] [blame] | 1355 | host->base = base; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1356 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1357 | return 0; |
| 1358 | } |
| 1359 | |
Gabriel C | b3627bb | 2007-08-02 20:20:44 +0200 | [diff] [blame] | 1360 | static void wbsd_release_regions(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | { |
| 1362 | if (host->base) |
| 1363 | release_region(host->base, 8); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1364 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1365 | host->base = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1366 | |
| 1367 | if (host->config) |
| 1368 | release_region(host->config, 2); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1369 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1370 | host->config = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1371 | } |
| 1372 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1373 | /* |
| 1374 | * Allocate/free DMA port and buffer |
| 1375 | */ |
| 1376 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1377 | static void __devinit wbsd_request_dma(struct wbsd_host *host, int dma) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | if (dma < 0) |
| 1380 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1382 | if (request_dma(dma, DRIVER_NAME)) |
| 1383 | goto err; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1385 | /* |
| 1386 | * We need to allocate a special buffer in |
| 1387 | * order for ISA to be able to DMA to it. |
| 1388 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1389 | host->dma_buffer = kmalloc(WBSD_DMA_SIZE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1390 | GFP_NOIO | GFP_DMA | __GFP_REPEAT | __GFP_NOWARN); |
| 1391 | if (!host->dma_buffer) |
| 1392 | goto free; |
| 1393 | |
| 1394 | /* |
| 1395 | * Translate the address to a physical address. |
| 1396 | */ |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 1397 | host->dma_addr = dma_map_single(mmc_dev(host->mmc), host->dma_buffer, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1398 | WBSD_DMA_SIZE, DMA_BIDIRECTIONAL); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1399 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1400 | /* |
| 1401 | * ISA DMA must be aligned on a 64k basis. |
| 1402 | */ |
| 1403 | if ((host->dma_addr & 0xffff) != 0) |
| 1404 | goto kfree; |
| 1405 | /* |
| 1406 | * ISA cannot access memory above 16 MB. |
| 1407 | */ |
| 1408 | else if (host->dma_addr >= 0x1000000) |
| 1409 | goto kfree; |
| 1410 | |
| 1411 | host->dma = dma; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1412 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1413 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1414 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1415 | kfree: |
| 1416 | /* |
| 1417 | * If we've gotten here then there is some kind of alignment bug |
| 1418 | */ |
| 1419 | BUG_ON(1); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1420 | |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 1421 | dma_unmap_single(mmc_dev(host->mmc), host->dma_addr, |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1422 | WBSD_DMA_SIZE, DMA_BIDIRECTIONAL); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1423 | host->dma_addr = (dma_addr_t)NULL; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1424 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1425 | kfree(host->dma_buffer); |
| 1426 | host->dma_buffer = NULL; |
| 1427 | |
| 1428 | free: |
| 1429 | free_dma(dma); |
| 1430 | |
| 1431 | err: |
| 1432 | printk(KERN_WARNING DRIVER_NAME ": Unable to allocate DMA %d. " |
| 1433 | "Falling back on FIFO.\n", dma); |
| 1434 | } |
| 1435 | |
Gabriel C | b3627bb | 2007-08-02 20:20:44 +0200 | [diff] [blame] | 1436 | static void wbsd_release_dma(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1437 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1438 | if (host->dma_addr) { |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 1439 | dma_unmap_single(mmc_dev(host->mmc), host->dma_addr, |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1440 | WBSD_DMA_SIZE, DMA_BIDIRECTIONAL); |
| 1441 | } |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1442 | kfree(host->dma_buffer); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1443 | if (host->dma >= 0) |
| 1444 | free_dma(host->dma); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1445 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1446 | host->dma = -1; |
| 1447 | host->dma_buffer = NULL; |
| 1448 | host->dma_addr = (dma_addr_t)NULL; |
| 1449 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1450 | |
| 1451 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1452 | * Allocate/free IRQ. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | */ |
| 1454 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1455 | static int __devinit wbsd_request_irq(struct wbsd_host *host, int irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1456 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | int ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1458 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1459 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1460 | * Allocate interrupt. |
| 1461 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1462 | |
Thomas Gleixner | dace145 | 2006-07-01 19:29:38 -0700 | [diff] [blame] | 1463 | ret = request_irq(irq, wbsd_irq, IRQF_SHARED, DRIVER_NAME, host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | if (ret) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1465 | return ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1466 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1467 | host->irq = irq; |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1468 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1469 | /* |
| 1470 | * Set up tasklets. |
| 1471 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1472 | tasklet_init(&host->card_tasklet, wbsd_tasklet_card, |
| 1473 | (unsigned long)host); |
| 1474 | tasklet_init(&host->fifo_tasklet, wbsd_tasklet_fifo, |
| 1475 | (unsigned long)host); |
| 1476 | tasklet_init(&host->crc_tasklet, wbsd_tasklet_crc, |
| 1477 | (unsigned long)host); |
| 1478 | tasklet_init(&host->timeout_tasklet, wbsd_tasklet_timeout, |
| 1479 | (unsigned long)host); |
| 1480 | tasklet_init(&host->finish_tasklet, wbsd_tasklet_finish, |
| 1481 | (unsigned long)host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1482 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | } |
| 1485 | |
Gabriel C | b3627bb | 2007-08-02 20:20:44 +0200 | [diff] [blame] | 1486 | static void wbsd_release_irq(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1487 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1488 | if (!host->irq) |
| 1489 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | |
| 1491 | free_irq(host->irq, host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1492 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1493 | host->irq = 0; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1494 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | tasklet_kill(&host->card_tasklet); |
| 1496 | tasklet_kill(&host->fifo_tasklet); |
| 1497 | tasklet_kill(&host->crc_tasklet); |
| 1498 | tasklet_kill(&host->timeout_tasklet); |
| 1499 | tasklet_kill(&host->finish_tasklet); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1500 | } |
| 1501 | |
| 1502 | /* |
| 1503 | * Allocate all resources for the host. |
| 1504 | */ |
| 1505 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1506 | static int __devinit wbsd_request_resources(struct wbsd_host *host, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1507 | int base, int irq, int dma) |
| 1508 | { |
| 1509 | int ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1510 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1511 | /* |
| 1512 | * Allocate I/O ports. |
| 1513 | */ |
| 1514 | ret = wbsd_request_region(host, base); |
| 1515 | if (ret) |
| 1516 | return ret; |
| 1517 | |
| 1518 | /* |
| 1519 | * Allocate interrupt. |
| 1520 | */ |
| 1521 | ret = wbsd_request_irq(host, irq); |
| 1522 | if (ret) |
| 1523 | return ret; |
| 1524 | |
| 1525 | /* |
| 1526 | * Allocate DMA. |
| 1527 | */ |
| 1528 | wbsd_request_dma(host, dma); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1529 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1530 | return 0; |
| 1531 | } |
| 1532 | |
| 1533 | /* |
| 1534 | * Release all resources for the host. |
| 1535 | */ |
| 1536 | |
Gabriel C | b3627bb | 2007-08-02 20:20:44 +0200 | [diff] [blame] | 1537 | static void wbsd_release_resources(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1538 | { |
| 1539 | wbsd_release_dma(host); |
| 1540 | wbsd_release_irq(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | wbsd_release_regions(host); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1542 | } |
| 1543 | |
| 1544 | /* |
| 1545 | * Configure the resources the chip should use. |
| 1546 | */ |
| 1547 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1548 | static void wbsd_chip_config(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1549 | { |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1550 | wbsd_unlock_config(host); |
| 1551 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1552 | /* |
| 1553 | * Reset the chip. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1554 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1555 | wbsd_write_config(host, WBSD_CONF_SWRST, 1); |
| 1556 | wbsd_write_config(host, WBSD_CONF_SWRST, 0); |
| 1557 | |
| 1558 | /* |
| 1559 | * Select SD/MMC function. |
| 1560 | */ |
| 1561 | wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1562 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1563 | /* |
| 1564 | * Set up card detection. |
| 1565 | */ |
| 1566 | wbsd_write_config(host, WBSD_CONF_PINS, WBSD_PINS_DETECT_GP11); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1567 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1568 | /* |
| 1569 | * Configure chip |
| 1570 | */ |
| 1571 | wbsd_write_config(host, WBSD_CONF_PORT_HI, host->base >> 8); |
| 1572 | wbsd_write_config(host, WBSD_CONF_PORT_LO, host->base & 0xff); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1573 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1574 | wbsd_write_config(host, WBSD_CONF_IRQ, host->irq); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1575 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1576 | if (host->dma >= 0) |
| 1577 | wbsd_write_config(host, WBSD_CONF_DRQ, host->dma); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1578 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1579 | /* |
| 1580 | * Enable and power up chip. |
| 1581 | */ |
| 1582 | wbsd_write_config(host, WBSD_CONF_ENABLE, 1); |
| 1583 | wbsd_write_config(host, WBSD_CONF_POWER, 0x20); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1584 | |
| 1585 | wbsd_lock_config(host); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1586 | } |
| 1587 | |
| 1588 | /* |
| 1589 | * Check that configured resources are correct. |
| 1590 | */ |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1591 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1592 | static int wbsd_chip_validate(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1593 | { |
| 1594 | int base, irq, dma; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1595 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1596 | wbsd_unlock_config(host); |
| 1597 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1598 | /* |
| 1599 | * Select SD/MMC function. |
| 1600 | */ |
| 1601 | wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1602 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1603 | /* |
| 1604 | * Read configuration. |
| 1605 | */ |
| 1606 | base = wbsd_read_config(host, WBSD_CONF_PORT_HI) << 8; |
| 1607 | base |= wbsd_read_config(host, WBSD_CONF_PORT_LO); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1608 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1609 | irq = wbsd_read_config(host, WBSD_CONF_IRQ); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1610 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1611 | dma = wbsd_read_config(host, WBSD_CONF_DRQ); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1612 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1613 | wbsd_lock_config(host); |
| 1614 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1615 | /* |
| 1616 | * Validate against given configuration. |
| 1617 | */ |
| 1618 | if (base != host->base) |
| 1619 | return 0; |
| 1620 | if (irq != host->irq) |
| 1621 | return 0; |
| 1622 | if ((dma != host->dma) && (host->dma != -1)) |
| 1623 | return 0; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1624 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1625 | return 1; |
| 1626 | } |
| 1627 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1628 | /* |
| 1629 | * Powers down the SD function |
| 1630 | */ |
| 1631 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1632 | static void wbsd_chip_poweroff(struct wbsd_host *host) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1633 | { |
| 1634 | wbsd_unlock_config(host); |
| 1635 | |
| 1636 | wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD); |
| 1637 | wbsd_write_config(host, WBSD_CONF_ENABLE, 0); |
| 1638 | |
| 1639 | wbsd_lock_config(host); |
| 1640 | } |
| 1641 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1642 | /*****************************************************************************\ |
| 1643 | * * |
| 1644 | * Devices setup and shutdown * |
| 1645 | * * |
| 1646 | \*****************************************************************************/ |
| 1647 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1648 | 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] | 1649 | int pnp) |
| 1650 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1651 | struct wbsd_host *host = NULL; |
| 1652 | struct mmc_host *mmc = NULL; |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1653 | int ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1654 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1655 | ret = wbsd_alloc_mmc(dev); |
| 1656 | if (ret) |
| 1657 | return ret; |
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 | mmc = dev_get_drvdata(dev); |
| 1660 | host = mmc_priv(mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1661 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1662 | /* |
| 1663 | * Scan for hardware. |
| 1664 | */ |
| 1665 | ret = wbsd_scan(host); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1666 | if (ret) { |
| 1667 | if (pnp && (ret == -ENODEV)) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1668 | printk(KERN_WARNING DRIVER_NAME |
| 1669 | ": Unable to confirm device presence. You may " |
| 1670 | "experience lock-ups.\n"); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1671 | } else { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1672 | wbsd_free_mmc(dev); |
| 1673 | return ret; |
| 1674 | } |
| 1675 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1676 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1677 | /* |
| 1678 | * Request resources. |
| 1679 | */ |
Pierre Ossman | dd2c609 | 2006-08-07 01:40:04 +0200 | [diff] [blame] | 1680 | ret = wbsd_request_resources(host, base, irq, dma); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1681 | if (ret) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1682 | wbsd_release_resources(host); |
| 1683 | wbsd_free_mmc(dev); |
| 1684 | return ret; |
| 1685 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1686 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1687 | /* |
| 1688 | * See if chip needs to be configured. |
| 1689 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1690 | if (pnp) { |
| 1691 | if ((host->config != 0) && !wbsd_chip_validate(host)) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1692 | printk(KERN_WARNING DRIVER_NAME |
| 1693 | ": PnP active but chip not configured! " |
| 1694 | "You probably have a buggy BIOS. " |
| 1695 | "Configuring chip manually.\n"); |
| 1696 | wbsd_chip_config(host); |
| 1697 | } |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1698 | } else |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1699 | wbsd_chip_config(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1700 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1701 | /* |
| 1702 | * Power Management stuff. No idea how this works. |
| 1703 | * Not tested. |
| 1704 | */ |
| 1705 | #ifdef CONFIG_PM |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1706 | if (host->config) { |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1707 | wbsd_unlock_config(host); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1708 | wbsd_write_config(host, WBSD_CONF_PME, 0xA0); |
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 | #endif |
| 1712 | /* |
| 1713 | * Allow device to initialise itself properly. |
| 1714 | */ |
| 1715 | mdelay(5); |
| 1716 | |
| 1717 | /* |
| 1718 | * Reset the chip into a known state. |
| 1719 | */ |
| 1720 | wbsd_init_device(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1721 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1722 | mmc_add_host(mmc); |
| 1723 | |
Russell King | d366b64 | 2005-08-19 09:40:08 +0100 | [diff] [blame] | 1724 | printk(KERN_INFO "%s: W83L51xD", mmc_hostname(mmc)); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1725 | if (host->chip_id != 0) |
| 1726 | printk(" id %x", (int)host->chip_id); |
| 1727 | printk(" at 0x%x irq %d", (int)host->base, (int)host->irq); |
| 1728 | if (host->dma >= 0) |
| 1729 | printk(" dma %d", (int)host->dma); |
| 1730 | else |
| 1731 | printk(" FIFO"); |
| 1732 | if (pnp) |
| 1733 | printk(" PnP"); |
| 1734 | printk("\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | |
| 1736 | return 0; |
| 1737 | } |
| 1738 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1739 | static void __devexit wbsd_shutdown(struct device *dev, int pnp) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1740 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1741 | struct mmc_host *mmc = dev_get_drvdata(dev); |
| 1742 | struct wbsd_host *host; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1743 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1744 | if (!mmc) |
| 1745 | return; |
| 1746 | |
| 1747 | host = mmc_priv(mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1748 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1749 | mmc_remove_host(mmc); |
| 1750 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1751 | /* |
| 1752 | * Power down the SD/MMC function. |
| 1753 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1754 | if (!pnp) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1755 | wbsd_chip_poweroff(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1756 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1757 | wbsd_release_resources(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1758 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1759 | wbsd_free_mmc(dev); |
| 1760 | } |
| 1761 | |
| 1762 | /* |
| 1763 | * Non-PnP |
| 1764 | */ |
| 1765 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1766 | static int __devinit wbsd_probe(struct platform_device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1767 | { |
Pierre Ossman | dd2c609 | 2006-08-07 01:40:04 +0200 | [diff] [blame] | 1768 | /* Use the module parameters for resources */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1769 | return wbsd_init(&dev->dev, io, irq, dma, 0); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1770 | } |
| 1771 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1772 | static int __devexit wbsd_remove(struct platform_device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1773 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1774 | wbsd_shutdown(&dev->dev, 0); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1775 | |
| 1776 | return 0; |
| 1777 | } |
| 1778 | |
| 1779 | /* |
| 1780 | * PnP |
| 1781 | */ |
| 1782 | |
| 1783 | #ifdef CONFIG_PNP |
| 1784 | |
| 1785 | static int __devinit |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1786 | 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] | 1787 | { |
| 1788 | int io, irq, dma; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1789 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1790 | /* |
| 1791 | * Get resources from PnP layer. |
| 1792 | */ |
| 1793 | io = pnp_port_start(pnpdev, 0); |
| 1794 | irq = pnp_irq(pnpdev, 0); |
| 1795 | if (pnp_dma_valid(pnpdev, 0)) |
| 1796 | dma = pnp_dma(pnpdev, 0); |
| 1797 | else |
| 1798 | dma = -1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1799 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1800 | 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] | 1801 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1802 | return wbsd_init(&pnpdev->dev, io, irq, dma, 1); |
| 1803 | } |
| 1804 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1805 | static void __devexit wbsd_pnp_remove(struct pnp_dev *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1806 | { |
| 1807 | wbsd_shutdown(&dev->dev, 1); |
| 1808 | } |
| 1809 | |
| 1810 | #endif /* CONFIG_PNP */ |
| 1811 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1812 | /* |
| 1813 | * Power management |
| 1814 | */ |
| 1815 | |
| 1816 | #ifdef CONFIG_PM |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1817 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1818 | static int wbsd_suspend(struct wbsd_host *host, pm_message_t state) |
| 1819 | { |
| 1820 | BUG_ON(host == NULL); |
| 1821 | |
| 1822 | return mmc_suspend_host(host->mmc, state); |
| 1823 | } |
| 1824 | |
| 1825 | static int wbsd_resume(struct wbsd_host *host) |
| 1826 | { |
| 1827 | BUG_ON(host == NULL); |
| 1828 | |
| 1829 | wbsd_init_device(host); |
| 1830 | |
| 1831 | return mmc_resume_host(host->mmc); |
| 1832 | } |
| 1833 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1834 | static int wbsd_platform_suspend(struct platform_device *dev, |
| 1835 | pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1836 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1837 | struct mmc_host *mmc = platform_get_drvdata(dev); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1838 | struct wbsd_host *host; |
| 1839 | int ret; |
| 1840 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1841 | if (mmc == NULL) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1842 | return 0; |
| 1843 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1844 | DBGF("Suspending...\n"); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1845 | |
| 1846 | host = mmc_priv(mmc); |
| 1847 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1848 | ret = wbsd_suspend(host, state); |
| 1849 | if (ret) |
| 1850 | return ret; |
| 1851 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1852 | wbsd_chip_poweroff(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1853 | |
| 1854 | return 0; |
| 1855 | } |
| 1856 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1857 | static int wbsd_platform_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1858 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1859 | struct mmc_host *mmc = platform_get_drvdata(dev); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1860 | struct wbsd_host *host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1861 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1862 | if (mmc == NULL) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1863 | return 0; |
| 1864 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1865 | DBGF("Resuming...\n"); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1866 | |
| 1867 | host = mmc_priv(mmc); |
| 1868 | |
| 1869 | wbsd_chip_config(host); |
| 1870 | |
| 1871 | /* |
| 1872 | * Allow device to initialise itself properly. |
| 1873 | */ |
| 1874 | mdelay(5); |
| 1875 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1876 | return wbsd_resume(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1877 | } |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1878 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1879 | #ifdef CONFIG_PNP |
| 1880 | |
| 1881 | static int wbsd_pnp_suspend(struct pnp_dev *pnp_dev, pm_message_t state) |
| 1882 | { |
| 1883 | struct mmc_host *mmc = dev_get_drvdata(&pnp_dev->dev); |
| 1884 | struct wbsd_host *host; |
| 1885 | |
| 1886 | if (mmc == NULL) |
| 1887 | return 0; |
| 1888 | |
| 1889 | DBGF("Suspending...\n"); |
| 1890 | |
| 1891 | host = mmc_priv(mmc); |
| 1892 | |
| 1893 | return wbsd_suspend(host, state); |
| 1894 | } |
| 1895 | |
| 1896 | static int wbsd_pnp_resume(struct pnp_dev *pnp_dev) |
| 1897 | { |
| 1898 | struct mmc_host *mmc = dev_get_drvdata(&pnp_dev->dev); |
| 1899 | struct wbsd_host *host; |
| 1900 | |
| 1901 | if (mmc == NULL) |
| 1902 | return 0; |
| 1903 | |
| 1904 | DBGF("Resuming...\n"); |
| 1905 | |
| 1906 | host = mmc_priv(mmc); |
| 1907 | |
| 1908 | /* |
| 1909 | * See if chip needs to be configured. |
| 1910 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1911 | if (host->config != 0) { |
| 1912 | if (!wbsd_chip_validate(host)) { |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1913 | printk(KERN_WARNING DRIVER_NAME |
| 1914 | ": PnP active but chip not configured! " |
| 1915 | "You probably have a buggy BIOS. " |
| 1916 | "Configuring chip manually.\n"); |
| 1917 | wbsd_chip_config(host); |
| 1918 | } |
| 1919 | } |
| 1920 | |
| 1921 | /* |
| 1922 | * Allow device to initialise itself properly. |
| 1923 | */ |
| 1924 | mdelay(5); |
| 1925 | |
| 1926 | return wbsd_resume(host); |
| 1927 | } |
| 1928 | |
| 1929 | #endif /* CONFIG_PNP */ |
| 1930 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1931 | #else /* CONFIG_PM */ |
| 1932 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1933 | #define wbsd_platform_suspend NULL |
| 1934 | #define wbsd_platform_resume NULL |
| 1935 | |
| 1936 | #define wbsd_pnp_suspend NULL |
| 1937 | #define wbsd_pnp_resume NULL |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1938 | |
| 1939 | #endif /* CONFIG_PM */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1940 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1941 | static struct platform_device *wbsd_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1942 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1943 | static struct platform_driver wbsd_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | .probe = wbsd_probe, |
Pierre Ossman | 93968d7 | 2005-11-09 23:21:06 +0000 | [diff] [blame] | 1945 | .remove = __devexit_p(wbsd_remove), |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1946 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1947 | .suspend = wbsd_platform_suspend, |
| 1948 | .resume = wbsd_platform_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1949 | .driver = { |
| 1950 | .name = DRIVER_NAME, |
| 1951 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1952 | }; |
| 1953 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1954 | #ifdef CONFIG_PNP |
| 1955 | |
| 1956 | static struct pnp_driver wbsd_pnp_driver = { |
| 1957 | .name = DRIVER_NAME, |
| 1958 | .id_table = pnp_dev_table, |
| 1959 | .probe = wbsd_pnp_probe, |
Pierre Ossman | 93968d7 | 2005-11-09 23:21:06 +0000 | [diff] [blame] | 1960 | .remove = __devexit_p(wbsd_pnp_remove), |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1961 | |
| 1962 | .suspend = wbsd_pnp_suspend, |
| 1963 | .resume = wbsd_pnp_resume, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1964 | }; |
| 1965 | |
| 1966 | #endif /* CONFIG_PNP */ |
| 1967 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1968 | /* |
| 1969 | * Module loading/unloading |
| 1970 | */ |
| 1971 | |
| 1972 | static int __init wbsd_drv_init(void) |
| 1973 | { |
| 1974 | int result; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1975 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1976 | printk(KERN_INFO DRIVER_NAME |
Pierre Ossman | 1615cc2 | 2007-02-09 08:19:07 +0100 | [diff] [blame] | 1977 | ": Winbond W83L51xD SD/MMC card interface driver\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1978 | printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1979 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1980 | #ifdef CONFIG_PNP |
| 1981 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1982 | if (!nopnp) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1983 | result = pnp_register_driver(&wbsd_pnp_driver); |
| 1984 | if (result < 0) |
| 1985 | return result; |
| 1986 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1987 | #endif /* CONFIG_PNP */ |
| 1988 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1989 | if (nopnp) { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1990 | result = platform_driver_register(&wbsd_driver); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1991 | if (result < 0) |
| 1992 | return result; |
| 1993 | |
Dmitry Torokhov | 21500bb | 2006-01-03 22:57:35 +0000 | [diff] [blame] | 1994 | wbsd_device = platform_device_alloc(DRIVER_NAME, -1); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1995 | if (!wbsd_device) { |
Dmitry Torokhov | 21500bb | 2006-01-03 22:57:35 +0000 | [diff] [blame] | 1996 | platform_driver_unregister(&wbsd_driver); |
| 1997 | return -ENOMEM; |
| 1998 | } |
| 1999 | |
| 2000 | result = platform_device_add(wbsd_device); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2001 | if (result) { |
Dmitry Torokhov | 21500bb | 2006-01-03 22:57:35 +0000 | [diff] [blame] | 2002 | platform_device_put(wbsd_device); |
| 2003 | platform_driver_unregister(&wbsd_driver); |
| 2004 | return result; |
| 2005 | } |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2006 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2007 | |
| 2008 | return 0; |
| 2009 | } |
| 2010 | |
| 2011 | static void __exit wbsd_drv_exit(void) |
| 2012 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2013 | #ifdef CONFIG_PNP |
| 2014 | |
| 2015 | if (!nopnp) |
| 2016 | pnp_unregister_driver(&wbsd_pnp_driver); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 2017 | |
| 2018 | #endif /* CONFIG_PNP */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2019 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2020 | if (nopnp) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2021 | platform_device_unregister(wbsd_device); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 2022 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2023 | platform_driver_unregister(&wbsd_driver); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2024 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2025 | |
| 2026 | DBG("unloaded\n"); |
| 2027 | } |
| 2028 | |
| 2029 | module_init(wbsd_drv_init); |
| 2030 | module_exit(wbsd_drv_exit); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2031 | #ifdef CONFIG_PNP |
| 2032 | module_param(nopnp, uint, 0444); |
| 2033 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | module_param(io, uint, 0444); |
| 2035 | module_param(irq, uint, 0444); |
| 2036 | module_param(dma, int, 0444); |
| 2037 | |
| 2038 | MODULE_LICENSE("GPL"); |
Pierre Ossman | de1d09e | 2005-11-09 23:21:49 +0000 | [diff] [blame] | 2039 | MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | MODULE_DESCRIPTION("Winbond W83L51xD SD/MMC card interface driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2041 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2042 | #ifdef CONFIG_PNP |
| 2043 | MODULE_PARM_DESC(nopnp, "Scan for device instead of relying on PNP. (default 0)"); |
| 2044 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2045 | MODULE_PARM_DESC(io, "I/O base to allocate. Must be 8 byte aligned. (default 0x248)"); |
| 2046 | MODULE_PARM_DESC(irq, "IRQ to allocate. (default 6)"); |
| 2047 | MODULE_PARM_DESC(dma, "DMA channel to allocate. -1 for no DMA. (default 2)"); |