Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 1 | /* |
Pierre Ossman | 70f1048 | 2007-07-11 20:04:50 +0200 | [diff] [blame] | 2 | * linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 3 | * |
Pierre Ossman | b69c905 | 2008-03-08 23:44:25 +0100 | [diff] [blame] | 4 | * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [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. |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 10 | */ |
| 11 | |
| 12 | /* |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 13 | * Controller registers |
| 14 | */ |
| 15 | |
| 16 | #define SDHCI_DMA_ADDRESS 0x00 |
| 17 | |
| 18 | #define SDHCI_BLOCK_SIZE 0x04 |
Pierre Ossman | bab7696 | 2006-07-02 16:51:35 +0100 | [diff] [blame] | 19 | #define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF)) |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 20 | |
| 21 | #define SDHCI_BLOCK_COUNT 0x06 |
| 22 | |
| 23 | #define SDHCI_ARGUMENT 0x08 |
| 24 | |
| 25 | #define SDHCI_TRANSFER_MODE 0x0C |
| 26 | #define SDHCI_TRNS_DMA 0x01 |
| 27 | #define SDHCI_TRNS_BLK_CNT_EN 0x02 |
| 28 | #define SDHCI_TRNS_ACMD12 0x04 |
| 29 | #define SDHCI_TRNS_READ 0x10 |
| 30 | #define SDHCI_TRNS_MULTI 0x20 |
| 31 | |
| 32 | #define SDHCI_COMMAND 0x0E |
| 33 | #define SDHCI_CMD_RESP_MASK 0x03 |
| 34 | #define SDHCI_CMD_CRC 0x08 |
| 35 | #define SDHCI_CMD_INDEX 0x10 |
| 36 | #define SDHCI_CMD_DATA 0x20 |
| 37 | |
| 38 | #define SDHCI_CMD_RESP_NONE 0x00 |
| 39 | #define SDHCI_CMD_RESP_LONG 0x01 |
| 40 | #define SDHCI_CMD_RESP_SHORT 0x02 |
| 41 | #define SDHCI_CMD_RESP_SHORT_BUSY 0x03 |
| 42 | |
| 43 | #define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff)) |
| 44 | |
| 45 | #define SDHCI_RESPONSE 0x10 |
| 46 | |
| 47 | #define SDHCI_BUFFER 0x20 |
| 48 | |
| 49 | #define SDHCI_PRESENT_STATE 0x24 |
| 50 | #define SDHCI_CMD_INHIBIT 0x00000001 |
| 51 | #define SDHCI_DATA_INHIBIT 0x00000002 |
| 52 | #define SDHCI_DOING_WRITE 0x00000100 |
| 53 | #define SDHCI_DOING_READ 0x00000200 |
| 54 | #define SDHCI_SPACE_AVAILABLE 0x00000400 |
| 55 | #define SDHCI_DATA_AVAILABLE 0x00000800 |
| 56 | #define SDHCI_CARD_PRESENT 0x00010000 |
| 57 | #define SDHCI_WRITE_PROTECT 0x00080000 |
| 58 | |
| 59 | #define SDHCI_HOST_CONTROL 0x28 |
| 60 | #define SDHCI_CTRL_LED 0x01 |
| 61 | #define SDHCI_CTRL_4BITBUS 0x02 |
Pierre Ossman | 077df88 | 2006-11-08 23:06:35 +0100 | [diff] [blame] | 62 | #define SDHCI_CTRL_HISPD 0x04 |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 63 | |
| 64 | #define SDHCI_POWER_CONTROL 0x29 |
Pierre Ossman | 146ad66 | 2006-06-30 02:22:23 -0700 | [diff] [blame] | 65 | #define SDHCI_POWER_ON 0x01 |
| 66 | #define SDHCI_POWER_180 0x0A |
| 67 | #define SDHCI_POWER_300 0x0C |
| 68 | #define SDHCI_POWER_330 0x0E |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 69 | |
| 70 | #define SDHCI_BLOCK_GAP_CONTROL 0x2A |
| 71 | |
Nicolas Pitre | 2df3b71 | 2007-09-29 10:46:20 -0400 | [diff] [blame] | 72 | #define SDHCI_WAKE_UP_CONTROL 0x2B |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 73 | |
| 74 | #define SDHCI_CLOCK_CONTROL 0x2C |
| 75 | #define SDHCI_DIVIDER_SHIFT 8 |
| 76 | #define SDHCI_CLOCK_CARD_EN 0x0004 |
| 77 | #define SDHCI_CLOCK_INT_STABLE 0x0002 |
| 78 | #define SDHCI_CLOCK_INT_EN 0x0001 |
| 79 | |
| 80 | #define SDHCI_TIMEOUT_CONTROL 0x2E |
| 81 | |
| 82 | #define SDHCI_SOFTWARE_RESET 0x2F |
| 83 | #define SDHCI_RESET_ALL 0x01 |
| 84 | #define SDHCI_RESET_CMD 0x02 |
| 85 | #define SDHCI_RESET_DATA 0x04 |
| 86 | |
| 87 | #define SDHCI_INT_STATUS 0x30 |
| 88 | #define SDHCI_INT_ENABLE 0x34 |
| 89 | #define SDHCI_SIGNAL_ENABLE 0x38 |
| 90 | #define SDHCI_INT_RESPONSE 0x00000001 |
| 91 | #define SDHCI_INT_DATA_END 0x00000002 |
| 92 | #define SDHCI_INT_DMA_END 0x00000008 |
Pierre Ossman | a406f5a | 2006-07-02 16:50:59 +0100 | [diff] [blame] | 93 | #define SDHCI_INT_SPACE_AVAIL 0x00000010 |
| 94 | #define SDHCI_INT_DATA_AVAIL 0x00000020 |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 95 | #define SDHCI_INT_CARD_INSERT 0x00000040 |
| 96 | #define SDHCI_INT_CARD_REMOVE 0x00000080 |
| 97 | #define SDHCI_INT_CARD_INT 0x00000100 |
Pierre Ossman | 964f9ce | 2007-07-20 18:20:36 +0200 | [diff] [blame] | 98 | #define SDHCI_INT_ERROR 0x00008000 |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 99 | #define SDHCI_INT_TIMEOUT 0x00010000 |
| 100 | #define SDHCI_INT_CRC 0x00020000 |
| 101 | #define SDHCI_INT_END_BIT 0x00040000 |
| 102 | #define SDHCI_INT_INDEX 0x00080000 |
| 103 | #define SDHCI_INT_DATA_TIMEOUT 0x00100000 |
| 104 | #define SDHCI_INT_DATA_CRC 0x00200000 |
| 105 | #define SDHCI_INT_DATA_END_BIT 0x00400000 |
| 106 | #define SDHCI_INT_BUS_POWER 0x00800000 |
| 107 | #define SDHCI_INT_ACMD12ERR 0x01000000 |
| 108 | |
| 109 | #define SDHCI_INT_NORMAL_MASK 0x00007FFF |
| 110 | #define SDHCI_INT_ERROR_MASK 0xFFFF8000 |
| 111 | |
| 112 | #define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \ |
| 113 | SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX) |
| 114 | #define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \ |
Pierre Ossman | a406f5a | 2006-07-02 16:50:59 +0100 | [diff] [blame] | 115 | SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \ |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 116 | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \ |
| 117 | SDHCI_INT_DATA_END_BIT) |
| 118 | |
| 119 | #define SDHCI_ACMD12_ERR 0x3C |
| 120 | |
| 121 | /* 3E-3F reserved */ |
| 122 | |
| 123 | #define SDHCI_CAPABILITIES 0x40 |
Pierre Ossman | 1c8cde9 | 2006-06-30 02:22:25 -0700 | [diff] [blame] | 124 | #define SDHCI_TIMEOUT_CLK_MASK 0x0000003F |
| 125 | #define SDHCI_TIMEOUT_CLK_SHIFT 0 |
| 126 | #define SDHCI_TIMEOUT_CLK_UNIT 0x00000080 |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 127 | #define SDHCI_CLOCK_BASE_MASK 0x00003F00 |
| 128 | #define SDHCI_CLOCK_BASE_SHIFT 8 |
Pierre Ossman | 1d676e0 | 2006-07-02 16:52:10 +0100 | [diff] [blame] | 129 | #define SDHCI_MAX_BLOCK_MASK 0x00030000 |
| 130 | #define SDHCI_MAX_BLOCK_SHIFT 16 |
Pierre Ossman | 077df88 | 2006-11-08 23:06:35 +0100 | [diff] [blame] | 131 | #define SDHCI_CAN_DO_HISPD 0x00200000 |
Pierre Ossman | 146ad66 | 2006-06-30 02:22:23 -0700 | [diff] [blame] | 132 | #define SDHCI_CAN_DO_DMA 0x00400000 |
| 133 | #define SDHCI_CAN_VDD_330 0x01000000 |
| 134 | #define SDHCI_CAN_VDD_300 0x02000000 |
| 135 | #define SDHCI_CAN_VDD_180 0x04000000 |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 136 | |
| 137 | /* 44-47 reserved for more caps */ |
| 138 | |
| 139 | #define SDHCI_MAX_CURRENT 0x48 |
| 140 | |
| 141 | /* 4C-4F reserved for more max current */ |
| 142 | |
| 143 | /* 50-FB reserved */ |
| 144 | |
| 145 | #define SDHCI_SLOT_INT_STATUS 0xFC |
| 146 | |
| 147 | #define SDHCI_HOST_VERSION 0xFE |
Pierre Ossman | 4a96550 | 2006-06-30 02:22:29 -0700 | [diff] [blame] | 148 | #define SDHCI_VENDOR_VER_MASK 0xFF00 |
| 149 | #define SDHCI_VENDOR_VER_SHIFT 8 |
| 150 | #define SDHCI_SPEC_VER_MASK 0x00FF |
| 151 | #define SDHCI_SPEC_VER_SHIFT 0 |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 152 | |
Pierre Ossman | b8c86fc | 2008-03-18 17:35:49 +0100 | [diff] [blame^] | 153 | struct sdhci_ops; |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 154 | |
| 155 | struct sdhci_host { |
Pierre Ossman | b8c86fc | 2008-03-18 17:35:49 +0100 | [diff] [blame^] | 156 | /* Data set by hardware interface driver */ |
| 157 | const char *hw_name; /* Hardware bus name */ |
| 158 | |
| 159 | unsigned int quirks; /* Deviations from spec. */ |
| 160 | |
| 161 | /* Controller doesn't honor resets unless we touch the clock register */ |
| 162 | #define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0) |
| 163 | /* Controller has bad caps bits, but really supports DMA */ |
| 164 | #define SDHCI_QUIRK_FORCE_DMA (1<<1) |
| 165 | /* Controller doesn't like to be reset when there is no card inserted. */ |
| 166 | #define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) |
| 167 | /* Controller doesn't like clearing the power reg before a change */ |
| 168 | #define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) |
| 169 | /* Controller has flaky internal state so reset it on each ios change */ |
| 170 | #define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4) |
| 171 | /* Controller has an unusable DMA engine */ |
| 172 | #define SDHCI_QUIRK_BROKEN_DMA (1<<5) |
| 173 | /* Controller can only DMA from 32-bit aligned addresses */ |
| 174 | #define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<6) |
| 175 | /* Controller can only DMA chunk sizes that are a multiple of 32 bits */ |
| 176 | #define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<7) |
| 177 | /* Controller needs to be reset after each request to stay stable */ |
| 178 | #define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<8) |
| 179 | /* Controller needs voltage and power writes to happen separately */ |
| 180 | #define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER (1<<9) |
| 181 | /* Controller has an off-by-one issue with timeout value */ |
| 182 | #define SDHCI_QUIRK_INCR_TIMEOUT_CONTROL (1<<10) |
| 183 | |
| 184 | int irq; /* Device IRQ */ |
| 185 | void __iomem * ioaddr; /* Mapped address */ |
| 186 | |
| 187 | const struct sdhci_ops *ops; /* Low level hw interface */ |
| 188 | |
| 189 | /* Internal data */ |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 190 | struct mmc_host *mmc; /* MMC structure */ |
| 191 | |
Pierre Ossman | 2f730fe | 2008-03-17 10:29:38 +0100 | [diff] [blame] | 192 | #ifdef CONFIG_LEDS_CLASS |
| 193 | struct led_classdev led; /* LED control */ |
| 194 | #endif |
| 195 | |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 196 | spinlock_t lock; /* Mutex */ |
| 197 | |
| 198 | int flags; /* Host attributes */ |
Pierre Ossman | c9fddbc | 2007-12-02 19:52:11 +0100 | [diff] [blame] | 199 | #define SDHCI_USE_DMA (1<<0) /* Host is DMA capable */ |
| 200 | #define SDHCI_REQ_USE_DMA (1<<1) /* Use DMA for this req. */ |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 201 | |
| 202 | unsigned int max_clk; /* Max possible freq (MHz) */ |
Pierre Ossman | 1c8cde9 | 2006-06-30 02:22:25 -0700 | [diff] [blame] | 203 | unsigned int timeout_clk; /* Timeout freq (KHz) */ |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 204 | |
| 205 | unsigned int clock; /* Current clock (MHz) */ |
Pierre Ossman | 146ad66 | 2006-06-30 02:22:23 -0700 | [diff] [blame] | 206 | unsigned short power; /* Current voltage */ |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 207 | |
| 208 | struct mmc_request *mrq; /* Current request */ |
| 209 | struct mmc_command *cmd; /* Current command */ |
| 210 | struct mmc_data *data; /* Current data request */ |
Harvey Harrison | 55654be | 2008-05-12 14:02:08 -0700 | [diff] [blame] | 211 | unsigned int data_early:1; /* Data finished before cmd */ |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 212 | |
| 213 | struct scatterlist *cur_sg; /* We're working on this */ |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 214 | int num_sg; /* Entries left */ |
| 215 | int offset; /* Offset into current sg */ |
| 216 | int remain; /* Bytes left in current */ |
| 217 | |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 218 | struct tasklet_struct card_tasklet; /* Tasklet structures */ |
| 219 | struct tasklet_struct finish_tasklet; |
| 220 | |
| 221 | struct timer_list timer; /* Timer for timeouts */ |
Pierre Ossman | b8c86fc | 2008-03-18 17:35:49 +0100 | [diff] [blame^] | 222 | |
| 223 | unsigned long private[0] ____cacheline_aligned; |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 224 | }; |
| 225 | |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 226 | |
Pierre Ossman | b8c86fc | 2008-03-18 17:35:49 +0100 | [diff] [blame^] | 227 | struct sdhci_ops { |
| 228 | int (*enable_dma)(struct sdhci_host *host); |
Pierre Ossman | d129bce | 2006-03-24 03:18:17 -0800 | [diff] [blame] | 229 | }; |
Pierre Ossman | b8c86fc | 2008-03-18 17:35:49 +0100 | [diff] [blame^] | 230 | |
| 231 | |
| 232 | extern struct sdhci_host *sdhci_alloc_host(struct device *dev, |
| 233 | size_t priv_size); |
| 234 | extern void sdhci_free_host(struct sdhci_host *host); |
| 235 | |
| 236 | static inline void *sdhci_priv(struct sdhci_host *host) |
| 237 | { |
| 238 | return (void *)host->private; |
| 239 | } |
| 240 | |
| 241 | extern int sdhci_add_host(struct sdhci_host *host); |
| 242 | extern void sdhci_remove_host(struct sdhci_host *host); |
| 243 | |
| 244 | #ifdef CONFIG_PM |
| 245 | extern int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state); |
| 246 | extern int sdhci_resume_host(struct sdhci_host *host); |
| 247 | #endif |