Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/mmc/wbsd.c - Winbond W83L51xD SD/MMC driver |
| 3 | * |
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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | |
| 37 | #include <asm/io.h> |
| 38 | #include <asm/dma.h> |
| 39 | #include <asm/scatterlist.h> |
| 40 | |
| 41 | #include "wbsd.h" |
| 42 | |
| 43 | #define DRIVER_NAME "wbsd" |
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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | DBGF("Ending request, cmd (%x)\n", mrq->cmd->opcode); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 211 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 212 | if (host->dma >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | /* |
| 214 | * Release ISA DMA controller. |
| 215 | */ |
| 216 | dmaflags = claim_dma_lock(); |
| 217 | disable_dma(host->dma); |
| 218 | clear_dma_ff(host->dma); |
| 219 | release_dma_lock(dmaflags); |
| 220 | |
| 221 | /* |
| 222 | * Disable DMA on host. |
| 223 | */ |
| 224 | wbsd_write_index(host, WBSD_IDX_DMA, 0); |
| 225 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 226 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | host->mrq = NULL; |
| 228 | |
| 229 | /* |
| 230 | * MMC layer might call back into the driver so first unlock. |
| 231 | */ |
| 232 | spin_unlock(&host->lock); |
| 233 | mmc_request_done(host->mmc, mrq); |
| 234 | spin_lock(&host->lock); |
| 235 | } |
| 236 | |
| 237 | /* |
| 238 | * Scatter/gather functions |
| 239 | */ |
| 240 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 241 | 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] | 242 | { |
| 243 | /* |
| 244 | * Get info. about SG list from data structure. |
| 245 | */ |
| 246 | host->cur_sg = data->sg; |
| 247 | host->num_sg = data->sg_len; |
| 248 | |
| 249 | host->offset = 0; |
| 250 | host->remain = host->cur_sg->length; |
| 251 | } |
| 252 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 253 | static inline int wbsd_next_sg(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | { |
| 255 | /* |
| 256 | * Skip to next SG entry. |
| 257 | */ |
| 258 | host->cur_sg++; |
| 259 | host->num_sg--; |
| 260 | |
| 261 | /* |
| 262 | * Any entries left? |
| 263 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 264 | if (host->num_sg > 0) { |
| 265 | host->offset = 0; |
| 266 | host->remain = host->cur_sg->length; |
| 267 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 268 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | return host->num_sg; |
| 270 | } |
| 271 | |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 272 | static inline char *wbsd_sg_to_buffer(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | { |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 274 | return page_address(host->cur_sg->page) + host->cur_sg->offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | } |
| 276 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 277 | 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] | 278 | { |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 279 | unsigned int len, i; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 280 | struct scatterlist *sg; |
| 281 | char *dmabuf = host->dma_buffer; |
| 282 | char *sgbuf; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 283 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | sg = data->sg; |
| 285 | len = data->sg_len; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 286 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 287 | for (i = 0; i < len; i++) { |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 288 | sgbuf = page_address(sg[i].page) + sg[i].offset; |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 289 | memcpy(dmabuf, sgbuf, sg[i].length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | dmabuf += sg[i].length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | } |
| 293 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 294 | 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] | 295 | { |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 296 | unsigned int len, i; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 297 | struct scatterlist *sg; |
| 298 | char *dmabuf = host->dma_buffer; |
| 299 | char *sgbuf; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | sg = data->sg; |
| 302 | len = data->sg_len; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 303 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 304 | for (i = 0; i < len; i++) { |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 305 | sgbuf = page_address(sg[i].page) + sg[i].offset; |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 306 | memcpy(sgbuf, dmabuf, sg[i].length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | dmabuf += sg[i].length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | /* |
| 312 | * Command handling |
| 313 | */ |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 314 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 315 | static inline void wbsd_get_short_reply(struct wbsd_host *host, |
| 316 | struct mmc_command *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | { |
| 318 | /* |
| 319 | * Correct response type? |
| 320 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 321 | if (wbsd_read_index(host, WBSD_IDX_RSPLEN) != WBSD_RSP_SHORT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | cmd->error = MMC_ERR_INVALID; |
| 323 | return; |
| 324 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 325 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 326 | cmd->resp[0] = wbsd_read_index(host, WBSD_IDX_RESP12) << 24; |
| 327 | cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP13) << 16; |
| 328 | cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP14) << 8; |
| 329 | cmd->resp[0] |= wbsd_read_index(host, WBSD_IDX_RESP15) << 0; |
| 330 | cmd->resp[1] = wbsd_read_index(host, WBSD_IDX_RESP16) << 24; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | } |
| 332 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 333 | static inline void wbsd_get_long_reply(struct wbsd_host *host, |
| 334 | struct mmc_command *cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | { |
| 336 | int i; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 337 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | /* |
| 339 | * Correct response type? |
| 340 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 341 | if (wbsd_read_index(host, WBSD_IDX_RSPLEN) != WBSD_RSP_LONG) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | cmd->error = MMC_ERR_INVALID; |
| 343 | return; |
| 344 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 345 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 346 | for (i = 0; i < 4; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | cmd->resp[i] = |
| 348 | wbsd_read_index(host, WBSD_IDX_RESP1 + i * 4) << 24; |
| 349 | cmd->resp[i] |= |
| 350 | wbsd_read_index(host, WBSD_IDX_RESP2 + i * 4) << 16; |
| 351 | cmd->resp[i] |= |
| 352 | wbsd_read_index(host, WBSD_IDX_RESP3 + i * 4) << 8; |
| 353 | cmd->resp[i] |= |
| 354 | wbsd_read_index(host, WBSD_IDX_RESP4 + i * 4) << 0; |
| 355 | } |
| 356 | } |
| 357 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 358 | 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] | 359 | { |
| 360 | int i; |
| 361 | u8 status, isr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 362 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | DBGF("Sending cmd (%x)\n", cmd->opcode); |
| 364 | |
| 365 | /* |
| 366 | * Clear accumulated ISR. The interrupt routine |
| 367 | * will fill this one with events that occur during |
| 368 | * transfer. |
| 369 | */ |
| 370 | host->isr = 0; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 371 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | /* |
| 373 | * Send the command (CRC calculated by host). |
| 374 | */ |
| 375 | outb(cmd->opcode, host->base + WBSD_CMDR); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 376 | for (i = 3; i >= 0; i--) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | outb((cmd->arg >> (i * 8)) & 0xff, host->base + WBSD_CMDR); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 378 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | cmd->error = MMC_ERR_NONE; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 380 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | /* |
| 382 | * Wait for the request to complete. |
| 383 | */ |
| 384 | do { |
| 385 | status = wbsd_read_index(host, WBSD_IDX_STATUS); |
| 386 | } while (status & WBSD_CARDTRAFFIC); |
| 387 | |
| 388 | /* |
| 389 | * Do we expect a reply? |
| 390 | */ |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 391 | if (cmd->flags & MMC_RSP_PRESENT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | /* |
| 393 | * Read back status. |
| 394 | */ |
| 395 | isr = host->isr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 396 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | /* Card removed? */ |
| 398 | if (isr & WBSD_INT_CARD) |
| 399 | cmd->error = MMC_ERR_TIMEOUT; |
| 400 | /* Timeout? */ |
| 401 | else if (isr & WBSD_INT_TIMEOUT) |
| 402 | cmd->error = MMC_ERR_TIMEOUT; |
| 403 | /* CRC? */ |
| 404 | else if ((cmd->flags & MMC_RSP_CRC) && (isr & WBSD_INT_CRC)) |
| 405 | cmd->error = MMC_ERR_BADCRC; |
| 406 | /* All ok */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 407 | else { |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 408 | if (cmd->flags & MMC_RSP_136) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | wbsd_get_long_reply(host, cmd); |
Russell King | e922517 | 2006-02-02 12:23:12 +0000 | [diff] [blame] | 410 | else |
| 411 | wbsd_get_short_reply(host, cmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | } |
| 413 | } |
| 414 | |
| 415 | DBGF("Sent cmd (%x), res %d\n", cmd->opcode, cmd->error); |
| 416 | } |
| 417 | |
| 418 | /* |
| 419 | * Data functions |
| 420 | */ |
| 421 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 422 | static void wbsd_empty_fifo(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 424 | struct mmc_data *data = host->mrq->cmd->data; |
| 425 | char *buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | int i, fsr, fifo; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | /* |
| 429 | * Handle excessive data. |
| 430 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 431 | if (host->num_sg == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 433 | |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 434 | buffer = wbsd_sg_to_buffer(host) + host->offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
| 436 | /* |
| 437 | * Drain the fifo. This has a tendency to loop longer |
| 438 | * than the FIFO length (usually one block). |
| 439 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 440 | while (!((fsr = inb(host->base + WBSD_FSR)) & WBSD_FIFO_EMPTY)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | /* |
| 442 | * The size field in the FSR is broken so we have to |
| 443 | * do some guessing. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 444 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | if (fsr & WBSD_FIFO_FULL) |
| 446 | fifo = 16; |
| 447 | else if (fsr & WBSD_FIFO_FUTHRE) |
| 448 | fifo = 8; |
| 449 | else |
| 450 | fifo = 1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 451 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 452 | for (i = 0; i < fifo; i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | *buffer = inb(host->base + WBSD_DFR); |
| 454 | buffer++; |
| 455 | host->offset++; |
| 456 | host->remain--; |
| 457 | |
| 458 | data->bytes_xfered++; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 459 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | * End of scatter list entry? |
| 462 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 463 | if (host->remain == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | /* |
| 465 | * Get next entry. Check if last. |
| 466 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 467 | if (!wbsd_next_sg(host)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 468 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 469 | |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 470 | buffer = wbsd_sg_to_buffer(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | } |
| 472 | } |
| 473 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | /* |
| 476 | * This is a very dirty hack to solve a |
| 477 | * hardware problem. The chip doesn't trigger |
| 478 | * FIFO threshold interrupts properly. |
| 479 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 480 | if ((data->blocks * data->blksz - data->bytes_xfered) < 16) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | tasklet_schedule(&host->fifo_tasklet); |
| 482 | } |
| 483 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 484 | static void wbsd_fill_fifo(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 486 | struct mmc_data *data = host->mrq->cmd->data; |
| 487 | char *buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | int i, fsr, fifo; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | /* |
| 491 | * Check that we aren't being called after the |
| 492 | * entire buffer has been transfered. |
| 493 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 494 | if (host->num_sg == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | return; |
| 496 | |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 497 | buffer = wbsd_sg_to_buffer(host) + host->offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | |
| 499 | /* |
| 500 | * Fill the fifo. This has a tendency to loop longer |
| 501 | * than the FIFO length (usually one block). |
| 502 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 503 | while (!((fsr = inb(host->base + WBSD_FSR)) & WBSD_FIFO_FULL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | /* |
| 505 | * The size field in the FSR is broken so we have to |
| 506 | * do some guessing. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 507 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | if (fsr & WBSD_FIFO_EMPTY) |
| 509 | fifo = 0; |
| 510 | else if (fsr & WBSD_FIFO_EMTHRE) |
| 511 | fifo = 8; |
| 512 | else |
| 513 | fifo = 15; |
| 514 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 515 | for (i = 16; i > fifo; i--) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | outb(*buffer, host->base + WBSD_DFR); |
| 517 | buffer++; |
| 518 | host->offset++; |
| 519 | host->remain--; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 520 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | data->bytes_xfered++; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 522 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | * End of scatter list entry? |
| 525 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 526 | if (host->remain == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | /* |
| 528 | * Get next entry. Check if last. |
| 529 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 530 | if (!wbsd_next_sg(host)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 532 | |
Pierre Ossman | 4a0ddbd | 2007-01-31 18:20:48 +0100 | [diff] [blame] | 533 | buffer = wbsd_sg_to_buffer(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | } |
| 535 | } |
| 536 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 537 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 538 | /* |
| 539 | * The controller stops sending interrupts for |
| 540 | * 'FIFO empty' under certain conditions. So we |
| 541 | * need to be a bit more pro-active. |
| 542 | */ |
| 543 | tasklet_schedule(&host->fifo_tasklet); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | } |
| 545 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 546 | 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] | 547 | { |
| 548 | u16 blksize; |
| 549 | u8 setup; |
| 550 | unsigned long dmaflags; |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 551 | unsigned int size; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | |
| 553 | DBGF("blksz %04x blks %04x flags %08x\n", |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 554 | data->blksz, data->blocks, data->flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | DBGF("tsac %d ms nsac %d clk\n", |
| 556 | data->timeout_ns / 1000000, data->timeout_clks); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 557 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | /* |
| 559 | * Calculate size. |
| 560 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 561 | size = data->blocks * data->blksz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | |
| 563 | /* |
| 564 | * Check timeout values for overflow. |
| 565 | * (Yes, some cards cause this value to overflow). |
| 566 | */ |
| 567 | if (data->timeout_ns > 127000000) |
| 568 | wbsd_write_index(host, WBSD_IDX_TAAC, 127); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 569 | else { |
| 570 | wbsd_write_index(host, WBSD_IDX_TAAC, |
| 571 | data->timeout_ns / 1000000); |
| 572 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | if (data->timeout_clks > 255) |
| 575 | wbsd_write_index(host, WBSD_IDX_NSAC, 255); |
| 576 | else |
| 577 | wbsd_write_index(host, WBSD_IDX_NSAC, data->timeout_clks); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 578 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | /* |
| 580 | * Inform the chip of how large blocks will be |
| 581 | * sent. It needs this to determine when to |
| 582 | * calculate CRC. |
| 583 | * |
| 584 | * Space for CRC must be included in the size. |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 585 | * Two bytes are needed for each data line. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 587 | if (host->bus_width == MMC_BUS_WIDTH_1) { |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 588 | blksize = data->blksz + 2; |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 589 | |
| 590 | wbsd_write_index(host, WBSD_IDX_PBSMSB, (blksize >> 4) & 0xF0); |
| 591 | wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 592 | } else if (host->bus_width == MMC_BUS_WIDTH_4) { |
Pavel Pisa | 2c171bf | 2006-05-19 21:48:03 +0100 | [diff] [blame] | 593 | blksize = data->blksz + 2 * 4; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 594 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 595 | wbsd_write_index(host, WBSD_IDX_PBSMSB, |
| 596 | ((blksize >> 4) & 0xF0) | WBSD_DATA_WIDTH); |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 597 | wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 598 | } else { |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 599 | data->error = MMC_ERR_INVALID; |
| 600 | return; |
| 601 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
| 603 | /* |
| 604 | * Clear the FIFO. This is needed even for DMA |
| 605 | * transfers since the chip still uses the FIFO |
| 606 | * internally. |
| 607 | */ |
| 608 | setup = wbsd_read_index(host, WBSD_IDX_SETUP); |
| 609 | setup |= WBSD_FIFO_RESET; |
| 610 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 611 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | /* |
| 613 | * DMA transfer? |
| 614 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 615 | if (host->dma >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | /* |
| 617 | * The buffer for DMA is only 64 kB. |
| 618 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 619 | BUG_ON(size > 0x10000); |
| 620 | if (size > 0x10000) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | data->error = MMC_ERR_INVALID; |
| 622 | return; |
| 623 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 624 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | /* |
| 626 | * Transfer data from the SG list to |
| 627 | * the DMA buffer. |
| 628 | */ |
| 629 | if (data->flags & MMC_DATA_WRITE) |
| 630 | wbsd_sg_to_dma(host, data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 631 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | /* |
| 633 | * Initialise the ISA DMA controller. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 634 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | dmaflags = claim_dma_lock(); |
| 636 | disable_dma(host->dma); |
| 637 | clear_dma_ff(host->dma); |
| 638 | if (data->flags & MMC_DATA_READ) |
| 639 | set_dma_mode(host->dma, DMA_MODE_READ & ~0x40); |
| 640 | else |
| 641 | set_dma_mode(host->dma, DMA_MODE_WRITE & ~0x40); |
| 642 | set_dma_addr(host->dma, host->dma_addr); |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 643 | set_dma_count(host->dma, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
| 645 | enable_dma(host->dma); |
| 646 | release_dma_lock(dmaflags); |
| 647 | |
| 648 | /* |
| 649 | * Enable DMA on the host. |
| 650 | */ |
| 651 | wbsd_write_index(host, WBSD_IDX_DMA, WBSD_DMA_ENABLE); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 652 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | /* |
| 654 | * This flag is used to keep printk |
| 655 | * output to a minimum. |
| 656 | */ |
| 657 | host->firsterr = 1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 658 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | /* |
| 660 | * Initialise the SG list. |
| 661 | */ |
| 662 | wbsd_init_sg(host, data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 663 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | /* |
| 665 | * Turn off DMA. |
| 666 | */ |
| 667 | wbsd_write_index(host, WBSD_IDX_DMA, 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 668 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | /* |
| 670 | * Set up FIFO threshold levels (and fill |
| 671 | * buffer if doing a write). |
| 672 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 673 | if (data->flags & MMC_DATA_READ) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 674 | wbsd_write_index(host, WBSD_IDX_FIFOEN, |
| 675 | WBSD_FIFOEN_FULL | 8); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 676 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | wbsd_write_index(host, WBSD_IDX_FIFOEN, |
| 678 | WBSD_FIFOEN_EMPTY | 8); |
| 679 | wbsd_fill_fifo(host); |
| 680 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 681 | } |
| 682 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | data->error = MMC_ERR_NONE; |
| 684 | } |
| 685 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 686 | 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] | 687 | { |
| 688 | unsigned long dmaflags; |
| 689 | int count; |
| 690 | u8 status; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 691 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | WARN_ON(host->mrq == NULL); |
| 693 | |
| 694 | /* |
| 695 | * Send a stop command if needed. |
| 696 | */ |
| 697 | if (data->stop) |
| 698 | wbsd_send_command(host, data->stop); |
| 699 | |
| 700 | /* |
| 701 | * Wait for the controller to leave data |
| 702 | * transfer state. |
| 703 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 704 | do { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | status = wbsd_read_index(host, WBSD_IDX_STATUS); |
| 706 | } while (status & (WBSD_BLOCK_READ | WBSD_BLOCK_WRITE)); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 707 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | /* |
| 709 | * DMA transfer? |
| 710 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 711 | if (host->dma >= 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | /* |
| 713 | * Disable DMA on the host. |
| 714 | */ |
| 715 | wbsd_write_index(host, WBSD_IDX_DMA, 0); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 716 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | /* |
| 718 | * Turn of ISA DMA controller. |
| 719 | */ |
| 720 | dmaflags = claim_dma_lock(); |
| 721 | disable_dma(host->dma); |
| 722 | clear_dma_ff(host->dma); |
| 723 | count = get_dma_residue(host->dma); |
| 724 | release_dma_lock(dmaflags); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 725 | |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 726 | data->bytes_xfered = host->mrq->data->blocks * |
| 727 | host->mrq->data->blksz - count; |
| 728 | data->bytes_xfered -= data->bytes_xfered % data->blksz; |
| 729 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | /* |
| 731 | * Any leftover data? |
| 732 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 733 | if (count) { |
Pierre Ossman | d191634 | 2005-11-05 10:36:35 +0000 | [diff] [blame] | 734 | printk(KERN_ERR "%s: Incomplete DMA transfer. " |
| 735 | "%d bytes left.\n", |
| 736 | mmc_hostname(host->mmc), count); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 737 | |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 738 | if (data->error == MMC_ERR_NONE) |
| 739 | data->error = MMC_ERR_FAILED; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 740 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | /* |
| 742 | * Transfer data from DMA buffer to |
| 743 | * SG list. |
| 744 | */ |
| 745 | if (data->flags & MMC_DATA_READ) |
| 746 | wbsd_dma_to_sg(host, data); |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 747 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 748 | |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 749 | if (data->error != MMC_ERR_NONE) { |
| 750 | if (data->bytes_xfered) |
| 751 | data->bytes_xfered -= data->blksz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 752 | } |
| 753 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 754 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | DBGF("Ending data transfer (%d bytes)\n", data->bytes_xfered); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 756 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | wbsd_request_end(host, host->mrq); |
| 758 | } |
| 759 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 760 | /*****************************************************************************\ |
| 761 | * * |
| 762 | * MMC layer callbacks * |
| 763 | * * |
| 764 | \*****************************************************************************/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 766 | static void wbsd_request(struct mmc_host *mmc, struct mmc_request *mrq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 767 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 768 | struct wbsd_host *host = mmc_priv(mmc); |
| 769 | struct mmc_command *cmd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | |
| 771 | /* |
| 772 | * Disable tasklets to avoid a deadlock. |
| 773 | */ |
| 774 | spin_lock_bh(&host->lock); |
| 775 | |
| 776 | BUG_ON(host->mrq != NULL); |
| 777 | |
| 778 | cmd = mrq->cmd; |
| 779 | |
| 780 | host->mrq = mrq; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 781 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 782 | /* |
| 783 | * If there is no card in the slot then |
| 784 | * timeout immediatly. |
| 785 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 786 | if (!(host->flags & WBSD_FCARD_PRESENT)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | cmd->error = MMC_ERR_TIMEOUT; |
| 788 | goto done; |
| 789 | } |
| 790 | |
| 791 | /* |
| 792 | * Does the request include data? |
| 793 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 794 | if (cmd->data) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | wbsd_prepare_data(host, cmd->data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 796 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | if (cmd->data->error != MMC_ERR_NONE) |
| 798 | goto done; |
| 799 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 800 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | wbsd_send_command(host, cmd); |
| 802 | |
| 803 | /* |
| 804 | * If this is a data transfer the request |
| 805 | * will be finished after the data has |
| 806 | * transfered. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 807 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 808 | if (cmd->data && (cmd->error == MMC_ERR_NONE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | /* |
Pierre Ossman | 5ba593a | 2006-11-21 17:45:37 +0100 | [diff] [blame] | 810 | * The hardware is so delightfully stupid that it has a list |
| 811 | * of "data" commands. If a command isn't on this list, it'll |
| 812 | * just go back to the idle state and won't send any data |
| 813 | * interrupts. |
| 814 | */ |
| 815 | switch (cmd->opcode) { |
| 816 | case 11: |
| 817 | case 17: |
| 818 | case 18: |
| 819 | case 20: |
| 820 | case 24: |
| 821 | case 25: |
| 822 | case 26: |
| 823 | case 27: |
| 824 | case 30: |
| 825 | case 42: |
| 826 | case 56: |
| 827 | break; |
| 828 | |
| 829 | /* ACMDs. We don't keep track of state, so we just treat them |
| 830 | * like any other command. */ |
| 831 | case 51: |
| 832 | break; |
| 833 | |
| 834 | default: |
| 835 | #ifdef CONFIG_MMC_DEBUG |
| 836 | printk(KERN_WARNING "%s: Data command %d is not " |
| 837 | "supported by this controller.\n", |
| 838 | mmc_hostname(host->mmc), cmd->opcode); |
| 839 | #endif |
| 840 | cmd->data->error = MMC_ERR_INVALID; |
| 841 | |
| 842 | if (cmd->data->stop) |
| 843 | wbsd_send_command(host, cmd->data->stop); |
| 844 | |
| 845 | goto done; |
| 846 | }; |
| 847 | |
| 848 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | * Dirty fix for hardware bug. |
| 850 | */ |
| 851 | if (host->dma == -1) |
| 852 | tasklet_schedule(&host->fifo_tasklet); |
| 853 | |
| 854 | spin_unlock_bh(&host->lock); |
| 855 | |
| 856 | return; |
| 857 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 858 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | done: |
| 860 | wbsd_request_end(host, mrq); |
| 861 | |
| 862 | spin_unlock_bh(&host->lock); |
| 863 | } |
| 864 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 865 | 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] | 866 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 867 | struct wbsd_host *host = mmc_priv(mmc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | u8 clk, setup, pwr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 869 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | spin_lock_bh(&host->lock); |
| 871 | |
| 872 | /* |
| 873 | * Reset the chip on each power off. |
| 874 | * Should clear out any weird states. |
| 875 | */ |
| 876 | if (ios->power_mode == MMC_POWER_OFF) |
| 877 | wbsd_init_device(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 878 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | if (ios->clock >= 24000000) |
| 880 | clk = WBSD_CLK_24M; |
| 881 | else if (ios->clock >= 16000000) |
| 882 | clk = WBSD_CLK_16M; |
| 883 | else if (ios->clock >= 12000000) |
| 884 | clk = WBSD_CLK_12M; |
| 885 | else |
| 886 | clk = WBSD_CLK_375K; |
| 887 | |
| 888 | /* |
| 889 | * Only write to the clock register when |
| 890 | * there is an actual change. |
| 891 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 892 | if (clk != host->clk) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | wbsd_write_index(host, WBSD_IDX_CLK, clk); |
| 894 | host->clk = clk; |
| 895 | } |
| 896 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 897 | /* |
| 898 | * Power up card. |
| 899 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 900 | if (ios->power_mode != MMC_POWER_OFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | pwr = inb(host->base + WBSD_CSR); |
| 902 | pwr &= ~WBSD_POWER_N; |
| 903 | outb(pwr, host->base + WBSD_CSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | } |
| 905 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 906 | /* |
| 907 | * MMC cards need to have pin 1 high during init. |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 908 | * It wreaks havoc with the card detection though so |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 909 | * that needs to be disabled. |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 910 | */ |
| 911 | setup = wbsd_read_index(host, WBSD_IDX_SETUP); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 912 | if (ios->chip_select == MMC_CS_HIGH) { |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 913 | BUG_ON(ios->bus_width != MMC_BUS_WIDTH_1); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 914 | setup |= WBSD_DAT3_H; |
| 915 | host->flags |= WBSD_FIGNORE_DETECT; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 916 | } else { |
| 917 | if (setup & WBSD_DAT3_H) { |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 918 | setup &= ~WBSD_DAT3_H; |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 919 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 920 | /* |
| 921 | * We cannot resume card detection immediatly |
| 922 | * because of capacitance and delays in the chip. |
| 923 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 924 | mod_timer(&host->ignore_timer, jiffies + HZ / 100); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 925 | } |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 926 | } |
| 927 | wbsd_write_index(host, WBSD_IDX_SETUP, setup); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 928 | |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 929 | /* |
| 930 | * Store bus width for later. Will be used when |
| 931 | * setting up the data transfer. |
| 932 | */ |
| 933 | host->bus_width = ios->bus_width; |
| 934 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | spin_unlock_bh(&host->lock); |
| 936 | } |
| 937 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 938 | static int wbsd_get_ro(struct mmc_host *mmc) |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 939 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 940 | struct wbsd_host *host = mmc_priv(mmc); |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 941 | u8 csr; |
| 942 | |
| 943 | spin_lock_bh(&host->lock); |
| 944 | |
| 945 | csr = inb(host->base + WBSD_CSR); |
| 946 | csr |= WBSD_MSLED; |
| 947 | outb(csr, host->base + WBSD_CSR); |
| 948 | |
| 949 | mdelay(1); |
| 950 | |
| 951 | csr = inb(host->base + WBSD_CSR); |
| 952 | csr &= ~WBSD_MSLED; |
| 953 | outb(csr, host->base + WBSD_CSR); |
| 954 | |
| 955 | spin_unlock_bh(&host->lock); |
| 956 | |
| 957 | return csr & WBSD_WRPT; |
| 958 | } |
| 959 | |
David Brownell | ab7aefd | 2006-11-12 17:55:30 -0800 | [diff] [blame] | 960 | static const struct mmc_host_ops wbsd_ops = { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 961 | .request = wbsd_request, |
| 962 | .set_ios = wbsd_set_ios, |
Pierre Ossman | 65ae211 | 2005-09-06 15:18:57 -0700 | [diff] [blame] | 963 | .get_ro = wbsd_get_ro, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 964 | }; |
| 965 | |
| 966 | /*****************************************************************************\ |
| 967 | * * |
| 968 | * Interrupt handling * |
| 969 | * * |
| 970 | \*****************************************************************************/ |
| 971 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | /* |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 973 | * Helper function to reset detection ignore |
| 974 | */ |
| 975 | |
| 976 | static void wbsd_reset_ignore(unsigned long data) |
| 977 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 978 | struct wbsd_host *host = (struct wbsd_host *)data; |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 979 | |
| 980 | BUG_ON(host == NULL); |
| 981 | |
| 982 | DBG("Resetting card detection ignore\n"); |
| 983 | |
| 984 | spin_lock_bh(&host->lock); |
| 985 | |
| 986 | host->flags &= ~WBSD_FIGNORE_DETECT; |
| 987 | |
| 988 | /* |
| 989 | * Card status might have changed during the |
| 990 | * blackout. |
| 991 | */ |
| 992 | tasklet_schedule(&host->card_tasklet); |
| 993 | |
| 994 | spin_unlock_bh(&host->lock); |
| 995 | } |
| 996 | |
| 997 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | * Tasklets |
| 999 | */ |
| 1000 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1001 | static inline struct mmc_data *wbsd_get_data(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1002 | { |
| 1003 | WARN_ON(!host->mrq); |
| 1004 | if (!host->mrq) |
| 1005 | return NULL; |
| 1006 | |
| 1007 | WARN_ON(!host->mrq->cmd); |
| 1008 | if (!host->mrq->cmd) |
| 1009 | return NULL; |
| 1010 | |
| 1011 | WARN_ON(!host->mrq->cmd->data); |
| 1012 | if (!host->mrq->cmd->data) |
| 1013 | return NULL; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1014 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | return host->mrq->cmd->data; |
| 1016 | } |
| 1017 | |
| 1018 | static void wbsd_tasklet_card(unsigned long param) |
| 1019 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1020 | struct wbsd_host *host = (struct wbsd_host *)param; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1021 | u8 csr; |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1022 | int delay = -1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1023 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1024 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1025 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1026 | if (host->flags & WBSD_FIGNORE_DETECT) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1027 | spin_unlock(&host->lock); |
| 1028 | return; |
| 1029 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1030 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1031 | csr = inb(host->base + WBSD_CSR); |
| 1032 | WARN_ON(csr == 0xff); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1033 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1034 | if (csr & WBSD_CARDPRESENT) { |
| 1035 | if (!(host->flags & WBSD_FCARD_PRESENT)) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1036 | DBG("Card inserted\n"); |
| 1037 | host->flags |= WBSD_FCARD_PRESENT; |
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 = 500; |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1040 | } |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1041 | } else if (host->flags & WBSD_FCARD_PRESENT) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | DBG("Card removed\n"); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1043 | host->flags &= ~WBSD_FCARD_PRESENT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1044 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1045 | if (host->mrq) { |
Pierre Ossman | d191634 | 2005-11-05 10:36:35 +0000 | [diff] [blame] | 1046 | printk(KERN_ERR "%s: Card removed during transfer!\n", |
| 1047 | mmc_hostname(host->mmc)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1048 | wbsd_reset(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1049 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1050 | host->mrq->cmd->error = MMC_ERR_FAILED; |
| 1051 | tasklet_schedule(&host->finish_tasklet); |
| 1052 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1053 | |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1054 | delay = 0; |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1055 | } |
Pierre Ossman | 210ce2a | 2005-09-12 20:36:19 +0100 | [diff] [blame] | 1056 | |
| 1057 | /* |
| 1058 | * Unlock first since we might get a call back. |
| 1059 | */ |
| 1060 | |
| 1061 | spin_unlock(&host->lock); |
| 1062 | |
| 1063 | if (delay != -1) |
| 1064 | mmc_detect_change(host->mmc, msecs_to_jiffies(delay)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | } |
| 1066 | |
| 1067 | static void wbsd_tasklet_fifo(unsigned long param) |
| 1068 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1069 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1070 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1071 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1073 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1074 | if (!host->mrq) |
| 1075 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1076 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1077 | data = wbsd_get_data(host); |
| 1078 | if (!data) |
| 1079 | goto end; |
| 1080 | |
| 1081 | if (data->flags & MMC_DATA_WRITE) |
| 1082 | wbsd_fill_fifo(host); |
| 1083 | else |
| 1084 | wbsd_empty_fifo(host); |
| 1085 | |
| 1086 | /* |
| 1087 | * Done? |
| 1088 | */ |
Alex Dubov | 14d836e | 2007-04-13 19:04:38 +0200 | [diff] [blame] | 1089 | if (host->num_sg == 0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | wbsd_write_index(host, WBSD_IDX_FIFOEN, 0); |
| 1091 | tasklet_schedule(&host->finish_tasklet); |
| 1092 | } |
| 1093 | |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1094 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1095 | spin_unlock(&host->lock); |
| 1096 | } |
| 1097 | |
| 1098 | static void wbsd_tasklet_crc(unsigned long param) |
| 1099 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1100 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1101 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1102 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1104 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | if (!host->mrq) |
| 1106 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1107 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1108 | data = wbsd_get_data(host); |
| 1109 | if (!data) |
| 1110 | goto end; |
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 | DBGF("CRC error\n"); |
| 1113 | |
| 1114 | data->error = MMC_ERR_BADCRC; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | tasklet_schedule(&host->finish_tasklet); |
| 1117 | |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1118 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1119 | spin_unlock(&host->lock); |
| 1120 | } |
| 1121 | |
| 1122 | static void wbsd_tasklet_timeout(unsigned long param) |
| 1123 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1124 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1125 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1128 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | if (!host->mrq) |
| 1130 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1131 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1132 | data = wbsd_get_data(host); |
| 1133 | if (!data) |
| 1134 | goto end; |
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 | DBGF("Timeout\n"); |
| 1137 | |
| 1138 | data->error = MMC_ERR_TIMEOUT; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1139 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | tasklet_schedule(&host->finish_tasklet); |
| 1141 | |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1142 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | spin_unlock(&host->lock); |
| 1144 | } |
| 1145 | |
| 1146 | static void wbsd_tasklet_finish(unsigned long param) |
| 1147 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1148 | struct wbsd_host *host = (struct wbsd_host *)param; |
| 1149 | struct mmc_data *data; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1151 | spin_lock(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1152 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | WARN_ON(!host->mrq); |
| 1154 | if (!host->mrq) |
| 1155 | goto end; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1157 | data = wbsd_get_data(host); |
| 1158 | if (!data) |
| 1159 | goto end; |
| 1160 | |
| 1161 | wbsd_finish_data(host, data); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1162 | |
| 1163 | end: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1164 | spin_unlock(&host->lock); |
| 1165 | } |
| 1166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1167 | /* |
| 1168 | * Interrupt handling |
| 1169 | */ |
| 1170 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1171 | static irqreturn_t wbsd_irq(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1173 | struct wbsd_host *host = dev_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1174 | int isr; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1176 | isr = inb(host->base + WBSD_ISR); |
| 1177 | |
| 1178 | /* |
| 1179 | * Was it actually our hardware that caused the interrupt? |
| 1180 | */ |
| 1181 | if (isr == 0xff || isr == 0x00) |
| 1182 | return IRQ_NONE; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1183 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1184 | host->isr |= isr; |
| 1185 | |
| 1186 | /* |
| 1187 | * Schedule tasklets as needed. |
| 1188 | */ |
| 1189 | if (isr & WBSD_INT_CARD) |
| 1190 | tasklet_schedule(&host->card_tasklet); |
| 1191 | if (isr & WBSD_INT_FIFO_THRE) |
| 1192 | tasklet_schedule(&host->fifo_tasklet); |
| 1193 | if (isr & WBSD_INT_CRC) |
| 1194 | tasklet_hi_schedule(&host->crc_tasklet); |
| 1195 | if (isr & WBSD_INT_TIMEOUT) |
| 1196 | tasklet_hi_schedule(&host->timeout_tasklet); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1197 | if (isr & WBSD_INT_TC) |
| 1198 | tasklet_schedule(&host->finish_tasklet); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1199 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1200 | return IRQ_HANDLED; |
| 1201 | } |
| 1202 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1203 | /*****************************************************************************\ |
| 1204 | * * |
| 1205 | * Device initialisation and shutdown * |
| 1206 | * * |
| 1207 | \*****************************************************************************/ |
| 1208 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1210 | * Allocate/free MMC structure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | */ |
| 1212 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1213 | static int __devinit wbsd_alloc_mmc(struct device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1214 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1215 | struct mmc_host *mmc; |
| 1216 | struct wbsd_host *host; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1217 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1218 | /* |
| 1219 | * Allocate MMC structure. |
| 1220 | */ |
| 1221 | mmc = mmc_alloc_host(sizeof(struct wbsd_host), dev); |
| 1222 | if (!mmc) |
| 1223 | return -ENOMEM; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1224 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1225 | host = mmc_priv(mmc); |
| 1226 | host->mmc = mmc; |
| 1227 | |
| 1228 | host->dma = -1; |
| 1229 | |
| 1230 | /* |
| 1231 | * Set host parameters. |
| 1232 | */ |
| 1233 | mmc->ops = &wbsd_ops; |
| 1234 | mmc->f_min = 375000; |
| 1235 | mmc->f_max = 24000000; |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1236 | mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34; |
Russell King | 42431ac | 2006-09-24 10:44:09 +0100 | [diff] [blame] | 1237 | mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE | MMC_CAP_BYTEBLOCK; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1238 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1239 | spin_lock_init(&host->lock); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1240 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1241 | /* |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1242 | * Set up timers |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1243 | */ |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1244 | init_timer(&host->ignore_timer); |
| 1245 | host->ignore_timer.data = (unsigned long)host; |
| 1246 | host->ignore_timer.function = wbsd_reset_ignore; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1247 | |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1248 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1249 | * Maximum number of segments. Worst case is one sector per segment |
| 1250 | * so this will be 64kB/512. |
| 1251 | */ |
| 1252 | mmc->max_hw_segs = 128; |
| 1253 | mmc->max_phys_segs = 128; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1254 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1255 | /* |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 1256 | * Maximum request size. Also limited by 64KiB buffer. |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1257 | */ |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 1258 | mmc->max_req_size = 65536; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1259 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1260 | /* |
| 1261 | * Maximum segment size. Could be one segment with the maximum number |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 1262 | * of bytes. |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1263 | */ |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 1264 | mmc->max_seg_size = mmc->max_req_size; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1265 | |
Pierre Ossman | fe4a3c7 | 2006-11-21 17:54:23 +0100 | [diff] [blame] | 1266 | /* |
| 1267 | * Maximum block size. We have 12 bits (= 4095) but have to subtract |
| 1268 | * space for CRC. So the maximum is 4095 - 4*2 = 4087. |
| 1269 | */ |
| 1270 | mmc->max_blk_size = 4087; |
| 1271 | |
Pierre Ossman | 55db890 | 2006-11-21 17:55:45 +0100 | [diff] [blame] | 1272 | /* |
| 1273 | * Maximum block count. There is no real limit so the maximum |
| 1274 | * request size will be the only restriction. |
| 1275 | */ |
| 1276 | mmc->max_blk_count = mmc->max_req_size; |
| 1277 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1278 | dev_set_drvdata(dev, mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1279 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1280 | return 0; |
| 1281 | } |
| 1282 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1283 | static void __devexit wbsd_free_mmc(struct device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1284 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1285 | struct mmc_host *mmc; |
| 1286 | struct wbsd_host *host; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1287 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1288 | mmc = dev_get_drvdata(dev); |
| 1289 | if (!mmc) |
| 1290 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1291 | |
Pierre Ossman | 6e6293d | 2005-07-01 12:13:55 +0100 | [diff] [blame] | 1292 | host = mmc_priv(mmc); |
| 1293 | BUG_ON(host == NULL); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1294 | |
Pierre Ossman | 1656fa5 | 2005-09-03 16:45:49 +0100 | [diff] [blame] | 1295 | del_timer_sync(&host->ignore_timer); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1296 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1297 | mmc_free_host(mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1298 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1299 | dev_set_drvdata(dev, NULL); |
| 1300 | } |
| 1301 | |
| 1302 | /* |
| 1303 | * Scan for known chip id:s |
| 1304 | */ |
| 1305 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1306 | static int __devinit wbsd_scan(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1307 | { |
| 1308 | int i, j, k; |
| 1309 | int id; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1310 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1311 | /* |
| 1312 | * Iterate through all ports, all codes to |
| 1313 | * find hardware that is in our known list. |
| 1314 | */ |
Dmitry Torokhov | 63648fb | 2006-01-03 22:56:56 +0000 | [diff] [blame] | 1315 | for (i = 0; i < ARRAY_SIZE(config_ports); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | if (!request_region(config_ports[i], 2, DRIVER_NAME)) |
| 1317 | continue; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1318 | |
Dmitry Torokhov | 63648fb | 2006-01-03 22:56:56 +0000 | [diff] [blame] | 1319 | for (j = 0; j < ARRAY_SIZE(unlock_codes); j++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1320 | id = 0xFFFF; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1321 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1322 | host->config = config_ports[i]; |
| 1323 | host->unlock_code = unlock_codes[j]; |
| 1324 | |
| 1325 | wbsd_unlock_config(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1326 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1327 | outb(WBSD_CONF_ID_HI, config_ports[i]); |
| 1328 | id = inb(config_ports[i] + 1) << 8; |
| 1329 | |
| 1330 | outb(WBSD_CONF_ID_LO, config_ports[i]); |
| 1331 | id |= inb(config_ports[i] + 1); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1332 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1333 | wbsd_lock_config(host); |
| 1334 | |
Dmitry Torokhov | 63648fb | 2006-01-03 22:56:56 +0000 | [diff] [blame] | 1335 | for (k = 0; k < ARRAY_SIZE(valid_ids); k++) { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1336 | if (id == valid_ids[k]) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1337 | host->chip_id = id; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1338 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1339 | return 0; |
| 1340 | } |
| 1341 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1342 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1343 | if (id != 0xFFFF) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1344 | DBG("Unknown hardware (id %x) found at %x\n", |
| 1345 | id, config_ports[i]); |
| 1346 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1348 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1349 | release_region(config_ports[i], 2); |
| 1350 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1351 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1352 | host->config = 0; |
| 1353 | host->unlock_code = 0; |
| 1354 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | return -ENODEV; |
| 1356 | } |
| 1357 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1358 | /* |
| 1359 | * Allocate/free io port ranges |
| 1360 | */ |
| 1361 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1362 | static int __devinit wbsd_request_region(struct wbsd_host *host, int base) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | { |
Pierre Ossman | 916f3ac | 2006-08-06 22:22:23 +0200 | [diff] [blame] | 1364 | if (base & 0x7) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1365 | return -EINVAL; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1366 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1367 | if (!request_region(base, 8, DRIVER_NAME)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | return -EIO; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1369 | |
Pierre Ossman | 916f3ac | 2006-08-06 22:22:23 +0200 | [diff] [blame] | 1370 | host->base = base; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1371 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | return 0; |
| 1373 | } |
| 1374 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1375 | static void __devexit wbsd_release_regions(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1376 | { |
| 1377 | if (host->base) |
| 1378 | release_region(host->base, 8); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1379 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1380 | host->base = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1381 | |
| 1382 | if (host->config) |
| 1383 | release_region(host->config, 2); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1384 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1385 | host->config = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | } |
| 1387 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1388 | /* |
| 1389 | * Allocate/free DMA port and buffer |
| 1390 | */ |
| 1391 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1392 | static void __devinit wbsd_request_dma(struct wbsd_host *host, int dma) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1393 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1394 | if (dma < 0) |
| 1395 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1396 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1397 | if (request_dma(dma, DRIVER_NAME)) |
| 1398 | goto err; |
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 | * We need to allocate a special buffer in |
| 1402 | * order for ISA to be able to DMA to it. |
| 1403 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1404 | host->dma_buffer = kmalloc(WBSD_DMA_SIZE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | GFP_NOIO | GFP_DMA | __GFP_REPEAT | __GFP_NOWARN); |
| 1406 | if (!host->dma_buffer) |
| 1407 | goto free; |
| 1408 | |
| 1409 | /* |
| 1410 | * Translate the address to a physical address. |
| 1411 | */ |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 1412 | 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] | 1413 | WBSD_DMA_SIZE, DMA_BIDIRECTIONAL); |
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 | /* |
| 1416 | * ISA DMA must be aligned on a 64k basis. |
| 1417 | */ |
| 1418 | if ((host->dma_addr & 0xffff) != 0) |
| 1419 | goto kfree; |
| 1420 | /* |
| 1421 | * ISA cannot access memory above 16 MB. |
| 1422 | */ |
| 1423 | else if (host->dma_addr >= 0x1000000) |
| 1424 | goto kfree; |
| 1425 | |
| 1426 | host->dma = dma; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1427 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1428 | return; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1429 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1430 | kfree: |
| 1431 | /* |
| 1432 | * If we've gotten here then there is some kind of alignment bug |
| 1433 | */ |
| 1434 | BUG_ON(1); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1435 | |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 1436 | dma_unmap_single(mmc_dev(host->mmc), host->dma_addr, |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1437 | WBSD_DMA_SIZE, DMA_BIDIRECTIONAL); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1438 | host->dma_addr = (dma_addr_t)NULL; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1439 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | kfree(host->dma_buffer); |
| 1441 | host->dma_buffer = NULL; |
| 1442 | |
| 1443 | free: |
| 1444 | free_dma(dma); |
| 1445 | |
| 1446 | err: |
| 1447 | printk(KERN_WARNING DRIVER_NAME ": Unable to allocate DMA %d. " |
| 1448 | "Falling back on FIFO.\n", dma); |
| 1449 | } |
| 1450 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1451 | static void __devexit wbsd_release_dma(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1452 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1453 | if (host->dma_addr) { |
Greg Kroah-Hartman | fcaf71f | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 1454 | dma_unmap_single(mmc_dev(host->mmc), host->dma_addr, |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1455 | WBSD_DMA_SIZE, DMA_BIDIRECTIONAL); |
| 1456 | } |
Jesper Juhl | 6044ec8 | 2005-11-07 01:01:32 -0800 | [diff] [blame] | 1457 | kfree(host->dma_buffer); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1458 | if (host->dma >= 0) |
| 1459 | free_dma(host->dma); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1460 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1461 | host->dma = -1; |
| 1462 | host->dma_buffer = NULL; |
| 1463 | host->dma_addr = (dma_addr_t)NULL; |
| 1464 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1465 | |
| 1466 | /* |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1467 | * Allocate/free IRQ. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1468 | */ |
| 1469 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1470 | static int __devinit wbsd_request_irq(struct wbsd_host *host, int irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1471 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | int ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1474 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | * Allocate interrupt. |
| 1476 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1477 | |
Thomas Gleixner | dace145 | 2006-07-01 19:29:38 -0700 | [diff] [blame] | 1478 | ret = request_irq(irq, wbsd_irq, IRQF_SHARED, DRIVER_NAME, host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1479 | if (ret) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1480 | return ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1481 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1482 | host->irq = irq; |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1483 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1484 | /* |
| 1485 | * Set up tasklets. |
| 1486 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1487 | tasklet_init(&host->card_tasklet, wbsd_tasklet_card, |
| 1488 | (unsigned long)host); |
| 1489 | tasklet_init(&host->fifo_tasklet, wbsd_tasklet_fifo, |
| 1490 | (unsigned long)host); |
| 1491 | tasklet_init(&host->crc_tasklet, wbsd_tasklet_crc, |
| 1492 | (unsigned long)host); |
| 1493 | tasklet_init(&host->timeout_tasklet, wbsd_tasklet_timeout, |
| 1494 | (unsigned long)host); |
| 1495 | tasklet_init(&host->finish_tasklet, wbsd_tasklet_finish, |
| 1496 | (unsigned long)host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1497 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1498 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1499 | } |
| 1500 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1501 | static void __devexit wbsd_release_irq(struct wbsd_host *host) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1503 | if (!host->irq) |
| 1504 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | |
| 1506 | free_irq(host->irq, host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1507 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1508 | host->irq = 0; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1509 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1510 | tasklet_kill(&host->card_tasklet); |
| 1511 | tasklet_kill(&host->fifo_tasklet); |
| 1512 | tasklet_kill(&host->crc_tasklet); |
| 1513 | tasklet_kill(&host->timeout_tasklet); |
| 1514 | tasklet_kill(&host->finish_tasklet); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1515 | } |
| 1516 | |
| 1517 | /* |
| 1518 | * Allocate all resources for the host. |
| 1519 | */ |
| 1520 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1521 | static int __devinit wbsd_request_resources(struct wbsd_host *host, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1522 | int base, int irq, int dma) |
| 1523 | { |
| 1524 | int ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1525 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1526 | /* |
| 1527 | * Allocate I/O ports. |
| 1528 | */ |
| 1529 | ret = wbsd_request_region(host, base); |
| 1530 | if (ret) |
| 1531 | return ret; |
| 1532 | |
| 1533 | /* |
| 1534 | * Allocate interrupt. |
| 1535 | */ |
| 1536 | ret = wbsd_request_irq(host, irq); |
| 1537 | if (ret) |
| 1538 | return ret; |
| 1539 | |
| 1540 | /* |
| 1541 | * Allocate DMA. |
| 1542 | */ |
| 1543 | wbsd_request_dma(host, dma); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1544 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1545 | return 0; |
| 1546 | } |
| 1547 | |
| 1548 | /* |
| 1549 | * Release all resources for the host. |
| 1550 | */ |
| 1551 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1552 | static void __devexit wbsd_release_resources(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1553 | { |
| 1554 | wbsd_release_dma(host); |
| 1555 | wbsd_release_irq(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1556 | wbsd_release_regions(host); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1557 | } |
| 1558 | |
| 1559 | /* |
| 1560 | * Configure the resources the chip should use. |
| 1561 | */ |
| 1562 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1563 | static void wbsd_chip_config(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1564 | { |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1565 | wbsd_unlock_config(host); |
| 1566 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1567 | /* |
| 1568 | * Reset the chip. |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1569 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1570 | wbsd_write_config(host, WBSD_CONF_SWRST, 1); |
| 1571 | wbsd_write_config(host, WBSD_CONF_SWRST, 0); |
| 1572 | |
| 1573 | /* |
| 1574 | * Select SD/MMC function. |
| 1575 | */ |
| 1576 | wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1577 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1578 | /* |
| 1579 | * Set up card detection. |
| 1580 | */ |
| 1581 | wbsd_write_config(host, WBSD_CONF_PINS, WBSD_PINS_DETECT_GP11); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1582 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1583 | /* |
| 1584 | * Configure chip |
| 1585 | */ |
| 1586 | wbsd_write_config(host, WBSD_CONF_PORT_HI, host->base >> 8); |
| 1587 | wbsd_write_config(host, WBSD_CONF_PORT_LO, host->base & 0xff); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1588 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1589 | wbsd_write_config(host, WBSD_CONF_IRQ, host->irq); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1590 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1591 | if (host->dma >= 0) |
| 1592 | wbsd_write_config(host, WBSD_CONF_DRQ, host->dma); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1593 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1594 | /* |
| 1595 | * Enable and power up chip. |
| 1596 | */ |
| 1597 | wbsd_write_config(host, WBSD_CONF_ENABLE, 1); |
| 1598 | wbsd_write_config(host, WBSD_CONF_POWER, 0x20); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1599 | |
| 1600 | wbsd_lock_config(host); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1601 | } |
| 1602 | |
| 1603 | /* |
| 1604 | * Check that configured resources are correct. |
| 1605 | */ |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1606 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1607 | static int wbsd_chip_validate(struct wbsd_host *host) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1608 | { |
| 1609 | int base, irq, dma; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1610 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1611 | wbsd_unlock_config(host); |
| 1612 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1613 | /* |
| 1614 | * Select SD/MMC function. |
| 1615 | */ |
| 1616 | wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1617 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1618 | /* |
| 1619 | * Read configuration. |
| 1620 | */ |
| 1621 | base = wbsd_read_config(host, WBSD_CONF_PORT_HI) << 8; |
| 1622 | base |= wbsd_read_config(host, WBSD_CONF_PORT_LO); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1623 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1624 | irq = wbsd_read_config(host, WBSD_CONF_IRQ); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1625 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1626 | dma = wbsd_read_config(host, WBSD_CONF_DRQ); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1627 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1628 | wbsd_lock_config(host); |
| 1629 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1630 | /* |
| 1631 | * Validate against given configuration. |
| 1632 | */ |
| 1633 | if (base != host->base) |
| 1634 | return 0; |
| 1635 | if (irq != host->irq) |
| 1636 | return 0; |
| 1637 | if ((dma != host->dma) && (host->dma != -1)) |
| 1638 | return 0; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1639 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1640 | return 1; |
| 1641 | } |
| 1642 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1643 | /* |
| 1644 | * Powers down the SD function |
| 1645 | */ |
| 1646 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1647 | static void wbsd_chip_poweroff(struct wbsd_host *host) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1648 | { |
| 1649 | wbsd_unlock_config(host); |
| 1650 | |
| 1651 | wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD); |
| 1652 | wbsd_write_config(host, WBSD_CONF_ENABLE, 0); |
| 1653 | |
| 1654 | wbsd_lock_config(host); |
| 1655 | } |
| 1656 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1657 | /*****************************************************************************\ |
| 1658 | * * |
| 1659 | * Devices setup and shutdown * |
| 1660 | * * |
| 1661 | \*****************************************************************************/ |
| 1662 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1663 | 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] | 1664 | int pnp) |
| 1665 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1666 | struct wbsd_host *host = NULL; |
| 1667 | struct mmc_host *mmc = NULL; |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1668 | int ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1669 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1670 | ret = wbsd_alloc_mmc(dev); |
| 1671 | if (ret) |
| 1672 | return ret; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1673 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1674 | mmc = dev_get_drvdata(dev); |
| 1675 | host = mmc_priv(mmc); |
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 | * Scan for hardware. |
| 1679 | */ |
| 1680 | ret = wbsd_scan(host); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1681 | if (ret) { |
| 1682 | if (pnp && (ret == -ENODEV)) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1683 | printk(KERN_WARNING DRIVER_NAME |
| 1684 | ": Unable to confirm device presence. You may " |
| 1685 | "experience lock-ups.\n"); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1686 | } else { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1687 | wbsd_free_mmc(dev); |
| 1688 | return ret; |
| 1689 | } |
| 1690 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1691 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1692 | /* |
| 1693 | * Request resources. |
| 1694 | */ |
Pierre Ossman | dd2c609 | 2006-08-07 01:40:04 +0200 | [diff] [blame] | 1695 | ret = wbsd_request_resources(host, base, irq, dma); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1696 | if (ret) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1697 | wbsd_release_resources(host); |
| 1698 | wbsd_free_mmc(dev); |
| 1699 | return ret; |
| 1700 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1701 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1702 | /* |
| 1703 | * See if chip needs to be configured. |
| 1704 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1705 | if (pnp) { |
| 1706 | if ((host->config != 0) && !wbsd_chip_validate(host)) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1707 | printk(KERN_WARNING DRIVER_NAME |
| 1708 | ": PnP active but chip not configured! " |
| 1709 | "You probably have a buggy BIOS. " |
| 1710 | "Configuring chip manually.\n"); |
| 1711 | wbsd_chip_config(host); |
| 1712 | } |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1713 | } else |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1714 | wbsd_chip_config(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1715 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1716 | /* |
| 1717 | * Power Management stuff. No idea how this works. |
| 1718 | * Not tested. |
| 1719 | */ |
| 1720 | #ifdef CONFIG_PM |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1721 | if (host->config) { |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1722 | wbsd_unlock_config(host); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1723 | wbsd_write_config(host, WBSD_CONF_PME, 0xA0); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1724 | wbsd_lock_config(host); |
| 1725 | } |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1726 | #endif |
| 1727 | /* |
| 1728 | * Allow device to initialise itself properly. |
| 1729 | */ |
| 1730 | mdelay(5); |
| 1731 | |
| 1732 | /* |
| 1733 | * Reset the chip into a known state. |
| 1734 | */ |
| 1735 | wbsd_init_device(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1736 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1737 | mmc_add_host(mmc); |
| 1738 | |
Russell King | d366b64 | 2005-08-19 09:40:08 +0100 | [diff] [blame] | 1739 | printk(KERN_INFO "%s: W83L51xD", mmc_hostname(mmc)); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1740 | if (host->chip_id != 0) |
| 1741 | printk(" id %x", (int)host->chip_id); |
| 1742 | printk(" at 0x%x irq %d", (int)host->base, (int)host->irq); |
| 1743 | if (host->dma >= 0) |
| 1744 | printk(" dma %d", (int)host->dma); |
| 1745 | else |
| 1746 | printk(" FIFO"); |
| 1747 | if (pnp) |
| 1748 | printk(" PnP"); |
| 1749 | printk("\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1750 | |
| 1751 | return 0; |
| 1752 | } |
| 1753 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1754 | static void __devexit wbsd_shutdown(struct device *dev, int pnp) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1755 | { |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1756 | struct mmc_host *mmc = dev_get_drvdata(dev); |
| 1757 | struct wbsd_host *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 | if (!mmc) |
| 1760 | return; |
| 1761 | |
| 1762 | host = mmc_priv(mmc); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1763 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1764 | mmc_remove_host(mmc); |
| 1765 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1766 | /* |
| 1767 | * Power down the SD/MMC function. |
| 1768 | */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1769 | if (!pnp) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1770 | wbsd_chip_poweroff(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1771 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1772 | wbsd_release_resources(host); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1773 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1774 | wbsd_free_mmc(dev); |
| 1775 | } |
| 1776 | |
| 1777 | /* |
| 1778 | * Non-PnP |
| 1779 | */ |
| 1780 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1781 | static int __devinit wbsd_probe(struct platform_device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1782 | { |
Pierre Ossman | dd2c609 | 2006-08-07 01:40:04 +0200 | [diff] [blame] | 1783 | /* Use the module parameters for resources */ |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1784 | return wbsd_init(&dev->dev, io, irq, dma, 0); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1785 | } |
| 1786 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1787 | static int __devexit wbsd_remove(struct platform_device *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1788 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1789 | wbsd_shutdown(&dev->dev, 0); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1790 | |
| 1791 | return 0; |
| 1792 | } |
| 1793 | |
| 1794 | /* |
| 1795 | * PnP |
| 1796 | */ |
| 1797 | |
| 1798 | #ifdef CONFIG_PNP |
| 1799 | |
| 1800 | static int __devinit |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1801 | 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] | 1802 | { |
| 1803 | int io, irq, dma; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1804 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1805 | /* |
| 1806 | * Get resources from PnP layer. |
| 1807 | */ |
| 1808 | io = pnp_port_start(pnpdev, 0); |
| 1809 | irq = pnp_irq(pnpdev, 0); |
| 1810 | if (pnp_dma_valid(pnpdev, 0)) |
| 1811 | dma = pnp_dma(pnpdev, 0); |
| 1812 | else |
| 1813 | dma = -1; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1814 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1815 | 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] | 1816 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1817 | return wbsd_init(&pnpdev->dev, io, irq, dma, 1); |
| 1818 | } |
| 1819 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1820 | static void __devexit wbsd_pnp_remove(struct pnp_dev *dev) |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1821 | { |
| 1822 | wbsd_shutdown(&dev->dev, 1); |
| 1823 | } |
| 1824 | |
| 1825 | #endif /* CONFIG_PNP */ |
| 1826 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | /* |
| 1828 | * Power management |
| 1829 | */ |
| 1830 | |
| 1831 | #ifdef CONFIG_PM |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1832 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1833 | static int wbsd_suspend(struct wbsd_host *host, pm_message_t state) |
| 1834 | { |
| 1835 | BUG_ON(host == NULL); |
| 1836 | |
| 1837 | return mmc_suspend_host(host->mmc, state); |
| 1838 | } |
| 1839 | |
| 1840 | static int wbsd_resume(struct wbsd_host *host) |
| 1841 | { |
| 1842 | BUG_ON(host == NULL); |
| 1843 | |
| 1844 | wbsd_init_device(host); |
| 1845 | |
| 1846 | return mmc_resume_host(host->mmc); |
| 1847 | } |
| 1848 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1849 | static int wbsd_platform_suspend(struct platform_device *dev, |
| 1850 | pm_message_t state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1851 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1852 | struct mmc_host *mmc = platform_get_drvdata(dev); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1853 | struct wbsd_host *host; |
| 1854 | int ret; |
| 1855 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1856 | if (mmc == NULL) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1857 | return 0; |
| 1858 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1859 | DBGF("Suspending...\n"); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1860 | |
| 1861 | host = mmc_priv(mmc); |
| 1862 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1863 | ret = wbsd_suspend(host, state); |
| 1864 | if (ret) |
| 1865 | return ret; |
| 1866 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1867 | wbsd_chip_poweroff(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1868 | |
| 1869 | return 0; |
| 1870 | } |
| 1871 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1872 | static int wbsd_platform_resume(struct platform_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1873 | { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1874 | struct mmc_host *mmc = platform_get_drvdata(dev); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1875 | struct wbsd_host *host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1876 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1877 | if (mmc == NULL) |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1878 | return 0; |
| 1879 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1880 | DBGF("Resuming...\n"); |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1881 | |
| 1882 | host = mmc_priv(mmc); |
| 1883 | |
| 1884 | wbsd_chip_config(host); |
| 1885 | |
| 1886 | /* |
| 1887 | * Allow device to initialise itself properly. |
| 1888 | */ |
| 1889 | mdelay(5); |
| 1890 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1891 | return wbsd_resume(host); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1892 | } |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1893 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1894 | #ifdef CONFIG_PNP |
| 1895 | |
| 1896 | static int wbsd_pnp_suspend(struct pnp_dev *pnp_dev, pm_message_t state) |
| 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("Suspending...\n"); |
| 1905 | |
| 1906 | host = mmc_priv(mmc); |
| 1907 | |
| 1908 | return wbsd_suspend(host, state); |
| 1909 | } |
| 1910 | |
| 1911 | static int wbsd_pnp_resume(struct pnp_dev *pnp_dev) |
| 1912 | { |
| 1913 | struct mmc_host *mmc = dev_get_drvdata(&pnp_dev->dev); |
| 1914 | struct wbsd_host *host; |
| 1915 | |
| 1916 | if (mmc == NULL) |
| 1917 | return 0; |
| 1918 | |
| 1919 | DBGF("Resuming...\n"); |
| 1920 | |
| 1921 | host = mmc_priv(mmc); |
| 1922 | |
| 1923 | /* |
| 1924 | * See if chip needs to be configured. |
| 1925 | */ |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1926 | if (host->config != 0) { |
| 1927 | if (!wbsd_chip_validate(host)) { |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1928 | printk(KERN_WARNING DRIVER_NAME |
| 1929 | ": PnP active but chip not configured! " |
| 1930 | "You probably have a buggy BIOS. " |
| 1931 | "Configuring chip manually.\n"); |
| 1932 | wbsd_chip_config(host); |
| 1933 | } |
| 1934 | } |
| 1935 | |
| 1936 | /* |
| 1937 | * Allow device to initialise itself properly. |
| 1938 | */ |
| 1939 | mdelay(5); |
| 1940 | |
| 1941 | return wbsd_resume(host); |
| 1942 | } |
| 1943 | |
| 1944 | #endif /* CONFIG_PNP */ |
| 1945 | |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1946 | #else /* CONFIG_PM */ |
| 1947 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1948 | #define wbsd_platform_suspend NULL |
| 1949 | #define wbsd_platform_resume NULL |
| 1950 | |
| 1951 | #define wbsd_pnp_suspend NULL |
| 1952 | #define wbsd_pnp_resume NULL |
Pierre Ossman | 19c1f3c | 2005-10-28 21:37:29 +0100 | [diff] [blame] | 1953 | |
| 1954 | #endif /* CONFIG_PM */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1955 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1956 | static struct platform_device *wbsd_device; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1957 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1958 | static struct platform_driver wbsd_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1959 | .probe = wbsd_probe, |
Pierre Ossman | 93968d7 | 2005-11-09 23:21:06 +0000 | [diff] [blame] | 1960 | .remove = __devexit_p(wbsd_remove), |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1961 | |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1962 | .suspend = wbsd_platform_suspend, |
| 1963 | .resume = wbsd_platform_resume, |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 1964 | .driver = { |
| 1965 | .name = DRIVER_NAME, |
| 1966 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | }; |
| 1968 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1969 | #ifdef CONFIG_PNP |
| 1970 | |
| 1971 | static struct pnp_driver wbsd_pnp_driver = { |
| 1972 | .name = DRIVER_NAME, |
| 1973 | .id_table = pnp_dev_table, |
| 1974 | .probe = wbsd_pnp_probe, |
Pierre Ossman | 93968d7 | 2005-11-09 23:21:06 +0000 | [diff] [blame] | 1975 | .remove = __devexit_p(wbsd_pnp_remove), |
Pierre Ossman | 5e68d95 | 2006-01-08 14:21:52 +0000 | [diff] [blame] | 1976 | |
| 1977 | .suspend = wbsd_pnp_suspend, |
| 1978 | .resume = wbsd_pnp_resume, |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1979 | }; |
| 1980 | |
| 1981 | #endif /* CONFIG_PNP */ |
| 1982 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1983 | /* |
| 1984 | * Module loading/unloading |
| 1985 | */ |
| 1986 | |
| 1987 | static int __init wbsd_drv_init(void) |
| 1988 | { |
| 1989 | int result; |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 1990 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1991 | printk(KERN_INFO DRIVER_NAME |
Pierre Ossman | 1615cc2 | 2007-02-09 08:19:07 +0100 | [diff] [blame] | 1992 | ": Winbond W83L51xD SD/MMC card interface driver\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1993 | printk(KERN_INFO DRIVER_NAME ": Copyright(c) Pierre Ossman\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1994 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1995 | #ifdef CONFIG_PNP |
| 1996 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 1997 | if (!nopnp) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 1998 | result = pnp_register_driver(&wbsd_pnp_driver); |
| 1999 | if (result < 0) |
| 2000 | return result; |
| 2001 | } |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 2002 | #endif /* CONFIG_PNP */ |
| 2003 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2004 | if (nopnp) { |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2005 | result = platform_driver_register(&wbsd_driver); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2006 | if (result < 0) |
| 2007 | return result; |
| 2008 | |
Dmitry Torokhov | 21500bb | 2006-01-03 22:57:35 +0000 | [diff] [blame] | 2009 | wbsd_device = platform_device_alloc(DRIVER_NAME, -1); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2010 | if (!wbsd_device) { |
Dmitry Torokhov | 21500bb | 2006-01-03 22:57:35 +0000 | [diff] [blame] | 2011 | platform_driver_unregister(&wbsd_driver); |
| 2012 | return -ENOMEM; |
| 2013 | } |
| 2014 | |
| 2015 | result = platform_device_add(wbsd_device); |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2016 | if (result) { |
Dmitry Torokhov | 21500bb | 2006-01-03 22:57:35 +0000 | [diff] [blame] | 2017 | platform_device_put(wbsd_device); |
| 2018 | platform_driver_unregister(&wbsd_driver); |
| 2019 | return result; |
| 2020 | } |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2021 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2022 | |
| 2023 | return 0; |
| 2024 | } |
| 2025 | |
| 2026 | static void __exit wbsd_drv_exit(void) |
| 2027 | { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2028 | #ifdef CONFIG_PNP |
| 2029 | |
| 2030 | if (!nopnp) |
| 2031 | pnp_unregister_driver(&wbsd_pnp_driver); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 2032 | |
| 2033 | #endif /* CONFIG_PNP */ |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2034 | |
Pierre Ossman | cfa7f52 | 2006-01-08 18:17:55 +0000 | [diff] [blame] | 2035 | if (nopnp) { |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2036 | platform_device_unregister(wbsd_device); |
Pierre Ossman | fecf92b | 2005-09-12 12:09:25 +0100 | [diff] [blame] | 2037 | |
Russell King | 3ae5eae | 2005-11-09 22:32:44 +0000 | [diff] [blame] | 2038 | platform_driver_unregister(&wbsd_driver); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2039 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | |
| 2041 | DBG("unloaded\n"); |
| 2042 | } |
| 2043 | |
| 2044 | module_init(wbsd_drv_init); |
| 2045 | module_exit(wbsd_drv_exit); |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2046 | #ifdef CONFIG_PNP |
| 2047 | module_param(nopnp, uint, 0444); |
| 2048 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2049 | module_param(io, uint, 0444); |
| 2050 | module_param(irq, uint, 0444); |
| 2051 | module_param(dma, int, 0444); |
| 2052 | |
| 2053 | MODULE_LICENSE("GPL"); |
Pierre Ossman | de1d09e | 2005-11-09 23:21:49 +0000 | [diff] [blame] | 2054 | MODULE_AUTHOR("Pierre Ossman <drzeus@drzeus.cx>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | MODULE_DESCRIPTION("Winbond W83L51xD SD/MMC card interface driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2056 | |
Pierre Ossman | 85bcc13 | 2005-05-08 19:35:27 +0100 | [diff] [blame] | 2057 | #ifdef CONFIG_PNP |
| 2058 | MODULE_PARM_DESC(nopnp, "Scan for device instead of relying on PNP. (default 0)"); |
| 2059 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2060 | MODULE_PARM_DESC(io, "I/O base to allocate. Must be 8 byte aligned. (default 0x248)"); |
| 2061 | MODULE_PARM_DESC(irq, "IRQ to allocate. (default 6)"); |
| 2062 | MODULE_PARM_DESC(dma, "DMA channel to allocate. -1 for no DMA. (default 2)"); |