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Pierre Ossmand129bce2006-03-24 03:18:17 -08001/*
2 * linux/drivers/mmc/sdhci.h - Secure Digital Host Controller Interface driver
3 *
Alex Dubov14d836e2007-04-13 19:04:38 +02004 * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
Pierre Ossmand129bce2006-03-24 03:18:17 -08005 *
6 * This program is free software; you can redistribute it and/or modify
Pierre Ossman643f7202006-09-30 23:27:52 -07007 * 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 Ossmand129bce2006-03-24 03:18:17 -080010 */
11
12/*
13 * PCI registers
14 */
15
Pierre Ossman67435272006-06-30 02:22:31 -070016#define PCI_SDHCI_IFPIO 0x00
17#define PCI_SDHCI_IFDMA 0x01
18#define PCI_SDHCI_IFVENDOR 0x02
19
Pierre Ossmand129bce2006-03-24 03:18:17 -080020#define PCI_SLOT_INFO 0x40 /* 8 bits */
21#define PCI_SLOT_INFO_SLOTS(x) ((x >> 4) & 7)
22#define PCI_SLOT_INFO_FIRST_BAR_MASK 0x07
23
24/*
25 * Controller registers
26 */
27
28#define SDHCI_DMA_ADDRESS 0x00
29
30#define SDHCI_BLOCK_SIZE 0x04
Pierre Ossmanbab76962006-07-02 16:51:35 +010031#define SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))
Pierre Ossmand129bce2006-03-24 03:18:17 -080032
33#define SDHCI_BLOCK_COUNT 0x06
34
35#define SDHCI_ARGUMENT 0x08
36
37#define SDHCI_TRANSFER_MODE 0x0C
38#define SDHCI_TRNS_DMA 0x01
39#define SDHCI_TRNS_BLK_CNT_EN 0x02
40#define SDHCI_TRNS_ACMD12 0x04
41#define SDHCI_TRNS_READ 0x10
42#define SDHCI_TRNS_MULTI 0x20
43
44#define SDHCI_COMMAND 0x0E
45#define SDHCI_CMD_RESP_MASK 0x03
46#define SDHCI_CMD_CRC 0x08
47#define SDHCI_CMD_INDEX 0x10
48#define SDHCI_CMD_DATA 0x20
49
50#define SDHCI_CMD_RESP_NONE 0x00
51#define SDHCI_CMD_RESP_LONG 0x01
52#define SDHCI_CMD_RESP_SHORT 0x02
53#define SDHCI_CMD_RESP_SHORT_BUSY 0x03
54
55#define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff))
56
57#define SDHCI_RESPONSE 0x10
58
59#define SDHCI_BUFFER 0x20
60
61#define SDHCI_PRESENT_STATE 0x24
62#define SDHCI_CMD_INHIBIT 0x00000001
63#define SDHCI_DATA_INHIBIT 0x00000002
64#define SDHCI_DOING_WRITE 0x00000100
65#define SDHCI_DOING_READ 0x00000200
66#define SDHCI_SPACE_AVAILABLE 0x00000400
67#define SDHCI_DATA_AVAILABLE 0x00000800
68#define SDHCI_CARD_PRESENT 0x00010000
69#define SDHCI_WRITE_PROTECT 0x00080000
70
71#define SDHCI_HOST_CONTROL 0x28
72#define SDHCI_CTRL_LED 0x01
73#define SDHCI_CTRL_4BITBUS 0x02
Pierre Ossman077df882006-11-08 23:06:35 +010074#define SDHCI_CTRL_HISPD 0x04
Pierre Ossmand129bce2006-03-24 03:18:17 -080075
76#define SDHCI_POWER_CONTROL 0x29
Pierre Ossman146ad662006-06-30 02:22:23 -070077#define SDHCI_POWER_ON 0x01
78#define SDHCI_POWER_180 0x0A
79#define SDHCI_POWER_300 0x0C
80#define SDHCI_POWER_330 0x0E
Pierre Ossmand129bce2006-03-24 03:18:17 -080081
82#define SDHCI_BLOCK_GAP_CONTROL 0x2A
83
84#define SDHCI_WALK_UP_CONTROL 0x2B
85
86#define SDHCI_CLOCK_CONTROL 0x2C
87#define SDHCI_DIVIDER_SHIFT 8
88#define SDHCI_CLOCK_CARD_EN 0x0004
89#define SDHCI_CLOCK_INT_STABLE 0x0002
90#define SDHCI_CLOCK_INT_EN 0x0001
91
92#define SDHCI_TIMEOUT_CONTROL 0x2E
93
94#define SDHCI_SOFTWARE_RESET 0x2F
95#define SDHCI_RESET_ALL 0x01
96#define SDHCI_RESET_CMD 0x02
97#define SDHCI_RESET_DATA 0x04
98
99#define SDHCI_INT_STATUS 0x30
100#define SDHCI_INT_ENABLE 0x34
101#define SDHCI_SIGNAL_ENABLE 0x38
102#define SDHCI_INT_RESPONSE 0x00000001
103#define SDHCI_INT_DATA_END 0x00000002
104#define SDHCI_INT_DMA_END 0x00000008
Pierre Ossmana406f5a2006-07-02 16:50:59 +0100105#define SDHCI_INT_SPACE_AVAIL 0x00000010
106#define SDHCI_INT_DATA_AVAIL 0x00000020
Pierre Ossmand129bce2006-03-24 03:18:17 -0800107#define SDHCI_INT_CARD_INSERT 0x00000040
108#define SDHCI_INT_CARD_REMOVE 0x00000080
109#define SDHCI_INT_CARD_INT 0x00000100
110#define SDHCI_INT_TIMEOUT 0x00010000
111#define SDHCI_INT_CRC 0x00020000
112#define SDHCI_INT_END_BIT 0x00040000
113#define SDHCI_INT_INDEX 0x00080000
114#define SDHCI_INT_DATA_TIMEOUT 0x00100000
115#define SDHCI_INT_DATA_CRC 0x00200000
116#define SDHCI_INT_DATA_END_BIT 0x00400000
117#define SDHCI_INT_BUS_POWER 0x00800000
118#define SDHCI_INT_ACMD12ERR 0x01000000
119
120#define SDHCI_INT_NORMAL_MASK 0x00007FFF
121#define SDHCI_INT_ERROR_MASK 0xFFFF8000
122
123#define SDHCI_INT_CMD_MASK (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \
124 SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)
125#define SDHCI_INT_DATA_MASK (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \
Pierre Ossmana406f5a2006-07-02 16:50:59 +0100126 SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \
Pierre Ossmand129bce2006-03-24 03:18:17 -0800127 SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \
128 SDHCI_INT_DATA_END_BIT)
129
130#define SDHCI_ACMD12_ERR 0x3C
131
132/* 3E-3F reserved */
133
134#define SDHCI_CAPABILITIES 0x40
Pierre Ossman1c8cde92006-06-30 02:22:25 -0700135#define SDHCI_TIMEOUT_CLK_MASK 0x0000003F
136#define SDHCI_TIMEOUT_CLK_SHIFT 0
137#define SDHCI_TIMEOUT_CLK_UNIT 0x00000080
Pierre Ossmand129bce2006-03-24 03:18:17 -0800138#define SDHCI_CLOCK_BASE_MASK 0x00003F00
139#define SDHCI_CLOCK_BASE_SHIFT 8
Pierre Ossman1d676e02006-07-02 16:52:10 +0100140#define SDHCI_MAX_BLOCK_MASK 0x00030000
141#define SDHCI_MAX_BLOCK_SHIFT 16
Pierre Ossman077df882006-11-08 23:06:35 +0100142#define SDHCI_CAN_DO_HISPD 0x00200000
Pierre Ossman146ad662006-06-30 02:22:23 -0700143#define SDHCI_CAN_DO_DMA 0x00400000
144#define SDHCI_CAN_VDD_330 0x01000000
145#define SDHCI_CAN_VDD_300 0x02000000
146#define SDHCI_CAN_VDD_180 0x04000000
Pierre Ossmand129bce2006-03-24 03:18:17 -0800147
148/* 44-47 reserved for more caps */
149
150#define SDHCI_MAX_CURRENT 0x48
151
152/* 4C-4F reserved for more max current */
153
154/* 50-FB reserved */
155
156#define SDHCI_SLOT_INT_STATUS 0xFC
157
158#define SDHCI_HOST_VERSION 0xFE
Pierre Ossman4a965502006-06-30 02:22:29 -0700159#define SDHCI_VENDOR_VER_MASK 0xFF00
160#define SDHCI_VENDOR_VER_SHIFT 8
161#define SDHCI_SPEC_VER_MASK 0x00FF
162#define SDHCI_SPEC_VER_SHIFT 0
Pierre Ossmand129bce2006-03-24 03:18:17 -0800163
164struct sdhci_chip;
165
166struct sdhci_host {
167 struct sdhci_chip *chip;
168 struct mmc_host *mmc; /* MMC structure */
169
170 spinlock_t lock; /* Mutex */
171
172 int flags; /* Host attributes */
173#define SDHCI_USE_DMA (1<<0)
174
175 unsigned int max_clk; /* Max possible freq (MHz) */
Pierre Ossman1c8cde92006-06-30 02:22:25 -0700176 unsigned int timeout_clk; /* Timeout freq (KHz) */
Pierre Ossmand129bce2006-03-24 03:18:17 -0800177
178 unsigned int clock; /* Current clock (MHz) */
Pierre Ossman146ad662006-06-30 02:22:23 -0700179 unsigned short power; /* Current voltage */
Pierre Ossmand129bce2006-03-24 03:18:17 -0800180
181 struct mmc_request *mrq; /* Current request */
182 struct mmc_command *cmd; /* Current command */
183 struct mmc_data *data; /* Current data request */
184
185 struct scatterlist *cur_sg; /* We're working on this */
Pierre Ossmand129bce2006-03-24 03:18:17 -0800186 int num_sg; /* Entries left */
187 int offset; /* Offset into current sg */
188 int remain; /* Bytes left in current */
189
Pierre Ossmand129bce2006-03-24 03:18:17 -0800190 char slot_descr[20]; /* Name for reservations */
191
192 int irq; /* Device IRQ */
193 int bar; /* PCI BAR index */
194 unsigned long addr; /* Bus address */
195 void __iomem * ioaddr; /* Mapped address */
196
197 struct tasklet_struct card_tasklet; /* Tasklet structures */
198 struct tasklet_struct finish_tasklet;
199
200 struct timer_list timer; /* Timer for timeouts */
201};
202
203struct sdhci_chip {
204 struct pci_dev *pdev;
205
Pierre Ossmandf673b22006-06-30 02:22:31 -0700206 unsigned long quirks;
207
Pierre Ossmand129bce2006-03-24 03:18:17 -0800208 int num_slots; /* Slots on controller */
209 struct sdhci_host *hosts[0]; /* Pointers to hosts */
210};