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1978fda8 GC |
1 | /* |
2 | * linux/include/linux/mmc/sdhci.h - Secure Digital Host Controller Interface | |
3 | * | |
4 | * Copyright (C) 2005-2008 Pierre Ossman, All Rights Reserved. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or (at | |
9 | * your option) any later version. | |
10 | */ | |
100e9186 RD |
11 | #ifndef LINUX_MMC_SDHCI_H |
12 | #define LINUX_MMC_SDHCI_H | |
1978fda8 GC |
13 | |
14 | #include <linux/scatterlist.h> | |
15 | #include <linux/compiler.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/io.h> | |
18 | #include <linux/mmc/host.h> | |
19 | ||
20 | struct sdhci_host { | |
21 | /* Data set by hardware interface driver */ | |
22 | const char *hw_name; /* Hardware bus name */ | |
23 | ||
24 | unsigned int quirks; /* Deviations from spec. */ | |
25 | ||
26 | /* Controller doesn't honor resets unless we touch the clock register */ | |
27 | #define SDHCI_QUIRK_CLOCK_BEFORE_RESET (1<<0) | |
28 | /* Controller has bad caps bits, but really supports DMA */ | |
29 | #define SDHCI_QUIRK_FORCE_DMA (1<<1) | |
30 | /* Controller doesn't like to be reset when there is no card inserted. */ | |
31 | #define SDHCI_QUIRK_NO_CARD_NO_RESET (1<<2) | |
32 | /* Controller doesn't like clearing the power reg before a change */ | |
33 | #define SDHCI_QUIRK_SINGLE_POWER_WRITE (1<<3) | |
34 | /* Controller has flaky internal state so reset it on each ios change */ | |
35 | #define SDHCI_QUIRK_RESET_CMD_DATA_ON_IOS (1<<4) | |
36 | /* Controller has an unusable DMA engine */ | |
37 | #define SDHCI_QUIRK_BROKEN_DMA (1<<5) | |
38 | /* Controller has an unusable ADMA engine */ | |
39 | #define SDHCI_QUIRK_BROKEN_ADMA (1<<6) | |
40 | /* Controller can only DMA from 32-bit aligned addresses */ | |
41 | #define SDHCI_QUIRK_32BIT_DMA_ADDR (1<<7) | |
42 | /* Controller can only DMA chunk sizes that are a multiple of 32 bits */ | |
43 | #define SDHCI_QUIRK_32BIT_DMA_SIZE (1<<8) | |
44 | /* Controller can only ADMA chunks that are a multiple of 32 bits */ | |
45 | #define SDHCI_QUIRK_32BIT_ADMA_SIZE (1<<9) | |
46 | /* Controller needs to be reset after each request to stay stable */ | |
47 | #define SDHCI_QUIRK_RESET_AFTER_REQUEST (1<<10) | |
48 | /* Controller needs voltage and power writes to happen separately */ | |
49 | #define SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER (1<<11) | |
50 | /* Controller provides an incorrect timeout value for transfers */ | |
51 | #define SDHCI_QUIRK_BROKEN_TIMEOUT_VAL (1<<12) | |
52 | /* Controller has an issue with buffer bits for small transfers */ | |
53 | #define SDHCI_QUIRK_BROKEN_SMALL_PIO (1<<13) | |
54 | /* Controller does not provide transfer-complete interrupt when not busy */ | |
55 | #define SDHCI_QUIRK_NO_BUSY_IRQ (1<<14) | |
56 | /* Controller has unreliable card detection */ | |
57 | #define SDHCI_QUIRK_BROKEN_CARD_DETECTION (1<<15) | |
58 | /* Controller reports inverted write-protect state */ | |
59 | #define SDHCI_QUIRK_INVERTED_WRITE_PROTECT (1<<16) | |
60 | /* Controller has nonstandard clock management */ | |
61 | #define SDHCI_QUIRK_NONSTANDARD_CLOCK (1<<17) | |
62 | /* Controller does not like fast PIO transfers */ | |
63 | #define SDHCI_QUIRK_PIO_NEEDS_DELAY (1<<18) | |
64 | /* Controller losing signal/interrupt enable states after reset */ | |
65 | #define SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET (1<<19) | |
66 | /* Controller has to be forced to use block size of 2048 bytes */ | |
67 | #define SDHCI_QUIRK_FORCE_BLK_SZ_2048 (1<<20) | |
68 | /* Controller cannot do multi-block transfers */ | |
69 | #define SDHCI_QUIRK_NO_MULTIBLOCK (1<<21) | |
70 | /* Controller can only handle 1-bit data transfers */ | |
71 | #define SDHCI_QUIRK_FORCE_1_BIT_DATA (1<<22) | |
72 | /* Controller needs 10ms delay between applying power and clock */ | |
73 | #define SDHCI_QUIRK_DELAY_AFTER_POWER (1<<23) | |
74 | /* Controller uses SDCLK instead of TMCLK for data timeouts */ | |
75 | #define SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK (1<<24) | |
76 | /* Controller reports wrong base clock capability */ | |
77 | #define SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN (1<<25) | |
78 | /* Controller cannot support End Attribute in NOP ADMA descriptor */ | |
79 | #define SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC (1<<26) | |
80 | /* Controller is missing device caps. Use caps provided by host */ | |
81 | #define SDHCI_QUIRK_MISSING_CAPS (1<<27) | |
82 | /* Controller uses Auto CMD12 command to stop the transfer */ | |
83 | #define SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 (1<<28) | |
84 | /* Controller doesn't have HISPD bit field in HI-SPEED SD card */ | |
85 | #define SDHCI_QUIRK_NO_HISPD_BIT (1<<29) | |
30652aa3 OJ |
86 | /* Controller treats ADMA descriptors with length 0000h incorrectly */ |
87 | #define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC (1<<30) | |
82b0e23a TI |
88 | /* The read-only detection via SDHCI_PRESENT_STATE register is unstable */ |
89 | #define SDHCI_QUIRK_UNSTABLE_RO_DETECT (1<<31) | |
1978fda8 GC |
90 | |
91 | int irq; /* Device IRQ */ | |
92 | void __iomem *ioaddr; /* Mapped address */ | |
93 | ||
94 | const struct sdhci_ops *ops; /* Low level hw interface */ | |
95 | ||
96 | struct regulator *vmmc; /* Power regulator */ | |
97 | ||
98 | /* Internal data */ | |
99 | struct mmc_host *mmc; /* MMC structure */ | |
100 | u64 dma_mask; /* custom DMA mask */ | |
101 | ||
102 | #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) | |
103 | struct led_classdev led; /* LED control */ | |
104 | char led_name[32]; | |
105 | #endif | |
106 | ||
107 | spinlock_t lock; /* Mutex */ | |
108 | ||
109 | int flags; /* Host attributes */ | |
110 | #define SDHCI_USE_SDMA (1<<0) /* Host is SDMA capable */ | |
111 | #define SDHCI_USE_ADMA (1<<1) /* Host is ADMA capable */ | |
112 | #define SDHCI_REQ_USE_DMA (1<<2) /* Use DMA for this req. */ | |
113 | #define SDHCI_DEVICE_DEAD (1<<3) /* Device unresponsive */ | |
b513ea25 | 114 | #define SDHCI_SDR50_NEEDS_TUNING (1<<4) /* SDR50 needs tuning */ |
cf2b5eea | 115 | #define SDHCI_NEEDS_RETUNING (1<<5) /* Host needs retuning */ |
e89d456f | 116 | #define SDHCI_AUTO_CMD12 (1<<6) /* Auto CMD12 support */ |
8edf6371 | 117 | #define SDHCI_AUTO_CMD23 (1<<7) /* Auto CMD23 support */ |
1978fda8 GC |
118 | |
119 | unsigned int version; /* SDHCI spec. version */ | |
120 | ||
121 | unsigned int max_clk; /* Max possible freq (MHz) */ | |
122 | unsigned int timeout_clk; /* Timeout freq (KHz) */ | |
c3ed3877 | 123 | unsigned int clk_mul; /* Clock Muliplier value */ |
1978fda8 GC |
124 | |
125 | unsigned int clock; /* Current clock (MHz) */ | |
126 | u8 pwr; /* Current voltage */ | |
127 | ||
128 | struct mmc_request *mrq; /* Current request */ | |
129 | struct mmc_command *cmd; /* Current command */ | |
130 | struct mmc_data *data; /* Current data request */ | |
131 | unsigned int data_early:1; /* Data finished before cmd */ | |
132 | ||
133 | struct sg_mapping_iter sg_miter; /* SG state for PIO */ | |
134 | unsigned int blocks; /* remaining PIO blocks */ | |
135 | ||
136 | int sg_count; /* Mapped sg entries */ | |
137 | ||
138 | u8 *adma_desc; /* ADMA descriptor table */ | |
139 | u8 *align_buffer; /* Bounce buffer */ | |
140 | ||
141 | dma_addr_t adma_addr; /* Mapped ADMA descr. table */ | |
142 | dma_addr_t align_addr; /* Mapped bounce buffer */ | |
143 | ||
144 | struct tasklet_struct card_tasklet; /* Tasklet structures */ | |
145 | struct tasklet_struct finish_tasklet; | |
146 | ||
147 | struct timer_list timer; /* Timer for timeouts */ | |
148 | ||
149 | unsigned int caps; /* Alternative capabilities */ | |
150 | ||
8f230f45 TI |
151 | unsigned int ocr_avail_sdio; /* OCR bit masks */ |
152 | unsigned int ocr_avail_sd; | |
153 | unsigned int ocr_avail_mmc; | |
154 | ||
b513ea25 AN |
155 | wait_queue_head_t buf_ready_int; /* Waitqueue for Buffer Read Ready interrupt */ |
156 | unsigned int tuning_done; /* Condition flag set when CMD19 succeeds */ | |
157 | ||
cf2b5eea AN |
158 | unsigned int tuning_count; /* Timer count for re-tuning */ |
159 | unsigned int tuning_mode; /* Re-tuning mode supported by host */ | |
160 | #define SDHCI_TUNING_MODE_1 0 | |
161 | struct timer_list tuning_timer; /* Timer for tuning */ | |
162 | ||
1978fda8 GC |
163 | unsigned long private[0] ____cacheline_aligned; |
164 | }; | |
100e9186 | 165 | #endif /* LINUX_MMC_SDHCI_H */ |