2 * linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver
4 * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved.
6 * This program is free software; you can redistribute it and/or modify
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.
12 #include <linux/scatterlist.h>
15 * Controller registers
18 #define SDHCI_DMA_ADDRESS 0x00
20 #define SDHCI_BLOCK_SIZE 0x04
21 #define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))
23 #define SDHCI_BLOCK_COUNT 0x06
25 #define SDHCI_ARGUMENT 0x08
27 #define SDHCI_TRANSFER_MODE 0x0C
28 #define SDHCI_TRNS_DMA 0x01
29 #define SDHCI_TRNS_BLK_CNT_EN 0x02
30 #define SDHCI_TRNS_ACMD12 0x04
31 #define SDHCI_TRNS_READ 0x10
32 #define SDHCI_TRNS_MULTI 0x20
34 #define SDHCI_COMMAND 0x0E
35 #define SDHCI_CMD_RESP_MASK 0x03
36 #define SDHCI_CMD_CRC 0x08
37 #define SDHCI_CMD_INDEX 0x10
38 #define SDHCI_CMD_DATA 0x20
40 #define SDHCI_CMD_RESP_NONE 0x00
41 #define SDHCI_CMD_RESP_LONG 0x01
42 #define SDHCI_CMD_RESP_SHORT 0x02
43 #define SDHCI_CMD_RESP_SHORT_BUSY 0x03
45 #define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff))
47 #define SDHCI_RESPONSE 0x10
49 #define SDHCI_BUFFER 0x20
51 #define SDHCI_PRESENT_STATE 0x24
52 #define SDHCI_CMD_INHIBIT 0x00000001
53 #define SDHCI_DATA_INHIBIT 0x00000002
54 #define SDHCI_DOING_WRITE 0x00000100
55 #define SDHCI_DOING_READ 0x00000200
56 #define SDHCI_SPACE_AVAILABLE 0x00000400
57 #define SDHCI_DATA_AVAILABLE 0x00000800
58 #define SDHCI_CARD_PRESENT 0x00010000
59 #define SDHCI_WRITE_PROTECT 0x00080000
61 #define SDHCI_HOST_CONTROL 0x28
62 #define SDHCI_CTRL_LED 0x01
63 #define SDHCI_CTRL_4BITBUS 0x02
64 #define SDHCI_CTRL_HISPD 0x04
65 #define SDHCI_CTRL_DMA_MASK 0x18
66 #define SDHCI_CTRL_SDMA 0x00
67 #define SDHCI_CTRL_ADMA1 0x08
68 #define SDHCI_CTRL_ADMA32 0x10
69 #define SDHCI_CTRL_ADMA64 0x18
71 #define SDHCI_POWER_CONTROL 0x29
72 #define SDHCI_POWER_ON 0x01
73 #define SDHCI_POWER_180 0x0A
74 #define SDHCI_POWER_300 0x0C
75 #define SDHCI_POWER_330 0x0E
77 #define SDHCI_BLOCK_GAP_CONTROL 0x2A
79 #define SDHCI_WAKE_UP_CONTROL 0x2B
81 #define SDHCI_CLOCK_CONTROL 0x2C
82 #define SDHCI_DIVIDER_SHIFT 8
83 #define SDHCI_CLOCK_CARD_EN 0x0004
84 #define SDHCI_CLOCK_INT_STABLE 0x0002
85 #define SDHCI_CLOCK_INT_EN 0x0001
87 #define SDHCI_TIMEOUT_CONTROL 0x2E
89 #define SDHCI_SOFTWARE_RESET 0x2F
90 #define SDHCI_RESET_ALL 0x01
91 #define SDHCI_RESET_CMD 0x02
92 #define SDHCI_RESET_DATA 0x04
94 #define SDHCI_INT_STATUS 0x30
95 #define SDHCI_INT_ENABLE 0x34
96 #define SDHCI_SIGNAL_ENABLE 0x38
97 #define SDHCI_INT_RESPONSE 0x00000001
98 #define SDHCI_INT_DATA_END 0x00000002
99 #define SDHCI_INT_DMA_END 0x00000008
100 #define SDHCI_INT_SPACE_AVAIL 0x00000010
101 #define SDHCI_INT_DATA_AVAIL 0x00000020
102 #define SDHCI_INT_CARD_INSERT 0x00000040
103 #define SDHCI_INT_CARD_REMOVE 0x00000080
104 #define SDHCI_INT_CARD_INT 0x00000100
105 #define SDHCI_INT_ERROR 0x00008000
106 #define SDHCI_INT_TIMEOUT 0x00010000
107 #define SDHCI_INT_CRC 0x00020000
108 #define SDHCI_INT_END_BIT 0x00040000
109 #define SDHCI_INT_INDEX 0x00080000
110 #define SDHCI_INT_DATA_TIMEOUT 0x00100000
111 #define SDHCI_INT_DATA_CRC 0x00200000
112 #define SDHCI_INT_DATA_END_BIT 0x00400000
113 #define SDHCI_INT_BUS_POWER 0x00800000
114 #define SDHCI_INT_ACMD12ERR 0x01000000
115 #define SDHCI_INT_ADMA_ERROR 0x02000000
117 #define SDHCI_INT_NORMAL_MASK 0x00007FFF
118 #define SDHCI_INT_ERROR_MASK 0xFFFF8000
120 #define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \
121 SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)
122 #define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
123 SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
124 SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
125 SDHCI_INT_DATA_END_BIT)
127 #define SDHCI_ACMD12_ERR 0x3C
131 #define SDHCI_CAPABILITIES 0x40
132 #define SDHCI_TIMEOUT_CLK_MASK 0x0000003F
133 #define SDHCI_TIMEOUT_CLK_SHIFT 0
134 #define SDHCI_TIMEOUT_CLK_UNIT 0x00000080
135 #define SDHCI_CLOCK_BASE_MASK 0x00003F00
136 #define SDHCI_CLOCK_BASE_SHIFT 8
137 #define SDHCI_MAX_BLOCK_MASK 0x00030000
138 #define SDHCI_MAX_BLOCK_SHIFT 16
139 #define SDHCI_CAN_DO_ADMA2 0x00080000
140 #define SDHCI_CAN_DO_ADMA1 0x00100000
141 #define SDHCI_CAN_DO_HISPD 0x00200000
142 #define SDHCI_CAN_DO_DMA 0x00400000
143 #define SDHCI_CAN_VDD_330 0x01000000
144 #define SDHCI_CAN_VDD_300 0x02000000
145 #define SDHCI_CAN_VDD_180 0x04000000
146 #define SDHCI_CAN_64BIT 0x10000000
148 /* 44-47 reserved for more caps */
150 #define SDHCI_MAX_CURRENT 0x48
152 /* 4C-4F reserved for more max current */
154 #define SDHCI_SET_ACMD12_ERROR 0x50
155 #define SDHCI_SET_INT_ERROR 0x52
157 #define SDHCI_ADMA_ERROR 0x54
161 #define SDHCI_ADMA_ADDRESS 0x58
165 #define SDHCI_SLOT_INT_STATUS 0xFC
167 #define SDHCI_HOST_VERSION 0xFE
168 #define SDHCI_VENDOR_VER_MASK 0xFF00
169 #define SDHCI_VENDOR_VER_SHIFT 8
170 #define SDHCI_SPEC_VER_MASK 0x00FF
171 #define SDHCI_SPEC_VER_SHIFT 0
172 #define SDHCI_SPEC_100 0
173 #define SDHCI_SPEC_200 1
178 /* Data set by hardware interface driver */
179 const char *hw_name; /* Hardware bus name */
181 unsigned int quirks; /* Deviations from spec. */
183 /* Controller doesn't honor resets unless we touch the clock register */
184 #define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0)
185 /* Controller has bad caps bits, but really supports DMA */
186 #define SDHCI_QUIRK_FORCE_DMA (1<<1)
187 /* Controller doesn't like to be reset when there is no card inserted. */
188 #define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2)
189 /* Controller doesn't like clearing the power reg before a change */
190 #define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3)
191 /* Controller has flaky internal state so reset it on each ios change */
192 #define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4)
193 /* Controller has an unusable DMA engine */
194 #define SDHCI_QUIRK_BROKEN_DMA (1<<5)
195 /* Controller has an unusable ADMA engine */
196 #define SDHCI_QUIRK_BROKEN_ADMA (1<<6)
197 /* Controller can only DMA from 32-bit aligned addresses */
198 #define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<7)
199 /* Controller can only DMA chunk sizes that are a multiple of 32 bits */
200 #define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<8)
201 /* Controller can only ADMA chunks that are a multiple of 32 bits */
202 #define SDHCI_QUIRK_32BIT_ADMA_SIZE (1<<9)
203 /* Controller needs to be reset after each request to stay stable */
204 #define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<10)
205 /* Controller needs voltage and power writes to happen separately */
206 #define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER (1<<11)
207 /* Controller provides an incorrect timeout value for transfers */
208 #define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (1<<12)
209 /* Controller has an issue with buffer bits for small transfers */
210 #define SDHCI_QUIRK_BROKEN_SMALL_PIO (1<<13)
211 /* Controller does not provide transfer-complete interrupt when not busy */
212 #define SDHCI_QUIRK_NO_BUSY_IRQ (1<<14)
214 int irq; /* Device IRQ */
215 void __iomem * ioaddr; /* Mapped address */
217 const struct sdhci_ops *ops; /* Low level hw interface */
220 struct mmc_host *mmc; /* MMC structure */
221 u64 dma_mask; /* custom DMA mask */
223 #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
224 struct led_classdev led; /* LED control */
228 spinlock_t lock; /* Mutex */
230 int flags; /* Host attributes */
231 #define SDHCI_USE_DMA (1<<0) /* Host is DMA capable */
232 #define SDHCI_USE_ADMA (1<<1) /* Host is ADMA capable */
233 #define SDHCI_REQ_USE_DMA (1<<2) /* Use DMA for this req. */
234 #define SDHCI_DEVICE_DEAD (1<<3) /* Device unresponsive */
236 unsigned int version; /* SDHCI spec. version */
238 unsigned int max_clk; /* Max possible freq (MHz) */
239 unsigned int timeout_clk; /* Timeout freq (KHz) */
241 unsigned int clock; /* Current clock (MHz) */
242 unsigned short power; /* Current voltage */
244 struct mmc_request *mrq; /* Current request */
245 struct mmc_command *cmd; /* Current command */
246 struct mmc_data *data; /* Current data request */
247 unsigned int data_early:1; /* Data finished before cmd */
249 struct sg_mapping_iter sg_miter; /* SG state for PIO */
250 unsigned int blocks; /* remaining PIO blocks */
252 int sg_count; /* Mapped sg entries */
254 u8 *adma_desc; /* ADMA descriptor table */
255 u8 *align_buffer; /* Bounce buffer */
257 dma_addr_t adma_addr; /* Mapped ADMA descr. table */
258 dma_addr_t align_addr; /* Mapped bounce buffer */
260 struct tasklet_struct card_tasklet; /* Tasklet structures */
261 struct tasklet_struct finish_tasklet;
263 struct timer_list timer; /* Timer for timeouts */
265 unsigned long private[0] ____cacheline_aligned;
270 int (*enable_dma)(struct sdhci_host *host);
274 extern struct sdhci_host *sdhci_alloc_host(struct device *dev,
276 extern void sdhci_free_host(struct sdhci_host *host);
278 static inline void *sdhci_priv(struct sdhci_host *host)
280 return (void *)host->private;
283 extern int sdhci_add_host(struct sdhci_host *host);
284 extern void sdhci_remove_host(struct sdhci_host *host, int dead);
287 extern int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state);
288 extern int sdhci_resume_host(struct sdhci_host *host);