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1da177e4 | 1 | /* |
70f10482 | 2 | * linux/drivers/mmc/host/mmci.h - ARM PrimeCell MMCI PL180/1 driver |
1da177e4 LT |
3 | * |
4 | * Copyright (C) 2003 Deep Blue Solutions, Ltd, 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 version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | #define MMCIPOWER 0x000 | |
11 | #define MCI_PWR_OFF 0x00 | |
12 | #define MCI_PWR_UP 0x02 | |
13 | #define MCI_PWR_ON 0x03 | |
14 | #define MCI_OD (1 << 6) | |
15 | #define MCI_ROD (1 << 7) | |
16 | ||
17 | #define MMCICLOCK 0x004 | |
18 | #define MCI_CLK_ENABLE (1 << 8) | |
19 | #define MCI_CLK_PWRSAVE (1 << 9) | |
20 | #define MCI_CLK_BYPASS (1 << 10) | |
21 | ||
22 | #define MMCIARGUMENT 0x008 | |
23 | #define MMCICOMMAND 0x00c | |
24 | #define MCI_CPSM_RESPONSE (1 << 6) | |
25 | #define MCI_CPSM_LONGRSP (1 << 7) | |
26 | #define MCI_CPSM_INTERRUPT (1 << 8) | |
27 | #define MCI_CPSM_PENDING (1 << 9) | |
28 | #define MCI_CPSM_ENABLE (1 << 10) | |
29 | ||
30 | #define MMCIRESPCMD 0x010 | |
31 | #define MMCIRESPONSE0 0x014 | |
32 | #define MMCIRESPONSE1 0x018 | |
33 | #define MMCIRESPONSE2 0x01c | |
34 | #define MMCIRESPONSE3 0x020 | |
35 | #define MMCIDATATIMER 0x024 | |
36 | #define MMCIDATALENGTH 0x028 | |
37 | #define MMCIDATACTRL 0x02c | |
38 | #define MCI_DPSM_ENABLE (1 << 0) | |
39 | #define MCI_DPSM_DIRECTION (1 << 1) | |
40 | #define MCI_DPSM_MODE (1 << 2) | |
41 | #define MCI_DPSM_DMAENABLE (1 << 3) | |
42 | ||
43 | #define MMCIDATACNT 0x030 | |
44 | #define MMCISTATUS 0x034 | |
45 | #define MCI_CMDCRCFAIL (1 << 0) | |
46 | #define MCI_DATACRCFAIL (1 << 1) | |
47 | #define MCI_CMDTIMEOUT (1 << 2) | |
48 | #define MCI_DATATIMEOUT (1 << 3) | |
49 | #define MCI_TXUNDERRUN (1 << 4) | |
50 | #define MCI_RXOVERRUN (1 << 5) | |
51 | #define MCI_CMDRESPEND (1 << 6) | |
52 | #define MCI_CMDSENT (1 << 7) | |
53 | #define MCI_DATAEND (1 << 8) | |
54 | #define MCI_DATABLOCKEND (1 << 10) | |
55 | #define MCI_CMDACTIVE (1 << 11) | |
56 | #define MCI_TXACTIVE (1 << 12) | |
57 | #define MCI_RXACTIVE (1 << 13) | |
58 | #define MCI_TXFIFOHALFEMPTY (1 << 14) | |
59 | #define MCI_RXFIFOHALFFULL (1 << 15) | |
60 | #define MCI_TXFIFOFULL (1 << 16) | |
61 | #define MCI_RXFIFOFULL (1 << 17) | |
62 | #define MCI_TXFIFOEMPTY (1 << 18) | |
63 | #define MCI_RXFIFOEMPTY (1 << 19) | |
64 | #define MCI_TXDATAAVLBL (1 << 20) | |
65 | #define MCI_RXDATAAVLBL (1 << 21) | |
66 | ||
67 | #define MMCICLEAR 0x038 | |
68 | #define MCI_CMDCRCFAILCLR (1 << 0) | |
69 | #define MCI_DATACRCFAILCLR (1 << 1) | |
70 | #define MCI_CMDTIMEOUTCLR (1 << 2) | |
71 | #define MCI_DATATIMEOUTCLR (1 << 3) | |
72 | #define MCI_TXUNDERRUNCLR (1 << 4) | |
73 | #define MCI_RXOVERRUNCLR (1 << 5) | |
74 | #define MCI_CMDRESPENDCLR (1 << 6) | |
75 | #define MCI_CMDSENTCLR (1 << 7) | |
76 | #define MCI_DATAENDCLR (1 << 8) | |
77 | #define MCI_DATABLOCKENDCLR (1 << 10) | |
78 | ||
79 | #define MMCIMASK0 0x03c | |
80 | #define MCI_CMDCRCFAILMASK (1 << 0) | |
81 | #define MCI_DATACRCFAILMASK (1 << 1) | |
82 | #define MCI_CMDTIMEOUTMASK (1 << 2) | |
83 | #define MCI_DATATIMEOUTMASK (1 << 3) | |
84 | #define MCI_TXUNDERRUNMASK (1 << 4) | |
85 | #define MCI_RXOVERRUNMASK (1 << 5) | |
86 | #define MCI_CMDRESPENDMASK (1 << 6) | |
87 | #define MCI_CMDSENTMASK (1 << 7) | |
88 | #define MCI_DATAENDMASK (1 << 8) | |
89 | #define MCI_DATABLOCKENDMASK (1 << 10) | |
90 | #define MCI_CMDACTIVEMASK (1 << 11) | |
91 | #define MCI_TXACTIVEMASK (1 << 12) | |
92 | #define MCI_RXACTIVEMASK (1 << 13) | |
93 | #define MCI_TXFIFOHALFEMPTYMASK (1 << 14) | |
94 | #define MCI_RXFIFOHALFFULLMASK (1 << 15) | |
95 | #define MCI_TXFIFOFULLMASK (1 << 16) | |
96 | #define MCI_RXFIFOFULLMASK (1 << 17) | |
97 | #define MCI_TXFIFOEMPTYMASK (1 << 18) | |
98 | #define MCI_RXFIFOEMPTYMASK (1 << 19) | |
99 | #define MCI_TXDATAAVLBLMASK (1 << 20) | |
100 | #define MCI_RXDATAAVLBLMASK (1 << 21) | |
101 | ||
102 | #define MMCIMASK1 0x040 | |
103 | #define MMCIFIFOCNT 0x048 | |
104 | #define MMCIFIFO 0x080 /* to 0x0bc */ | |
105 | ||
106 | #define MCI_IRQENABLE \ | |
107 | (MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK| \ | |
108 | MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK| \ | |
109 | MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATABLOCKENDMASK) | |
110 | ||
111 | /* | |
112 | * The size of the FIFO in bytes. | |
113 | */ | |
114 | #define MCI_FIFOSIZE (16*4) | |
115 | ||
116 | #define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2) | |
117 | ||
118 | #define NR_SG 16 | |
119 | ||
120 | struct clk; | |
121 | ||
122 | struct mmci_host { | |
123 | void __iomem *base; | |
124 | struct mmc_request *mrq; | |
125 | struct mmc_command *cmd; | |
126 | struct mmc_data *data; | |
127 | struct mmc_host *mmc; | |
128 | struct clk *clk; | |
129 | ||
130 | unsigned int data_xfered; | |
131 | ||
132 | spinlock_t lock; | |
133 | ||
134 | unsigned int mclk; | |
135 | unsigned int cclk; | |
136 | u32 pwr; | |
137 | struct mmc_platform_data *plat; | |
138 | ||
139 | struct timer_list timer; | |
140 | unsigned int oldstat; | |
141 | ||
142 | unsigned int sg_len; | |
143 | ||
144 | /* pio stuff */ | |
145 | struct scatterlist *sg_ptr; | |
146 | unsigned int sg_off; | |
147 | unsigned int size; | |
148 | }; | |
149 | ||
150 | static inline void mmci_init_sg(struct mmci_host *host, struct mmc_data *data) | |
151 | { | |
152 | /* | |
153 | * Ideally, we want the higher levels to pass us a scatter list. | |
154 | */ | |
155 | host->sg_len = data->sg_len; | |
156 | host->sg_ptr = data->sg; | |
157 | host->sg_off = 0; | |
158 | } | |
159 | ||
160 | static inline int mmci_next_sg(struct mmci_host *host) | |
161 | { | |
162 | host->sg_ptr++; | |
163 | host->sg_off = 0; | |
164 | return --host->sg_len; | |
165 | } | |
166 | ||
167 | static inline char *mmci_kmap_atomic(struct mmci_host *host, unsigned long *flags) | |
168 | { | |
169 | struct scatterlist *sg = host->sg_ptr; | |
170 | ||
171 | local_irq_save(*flags); | |
172 | return kmap_atomic(sg->page, KM_BIO_SRC_IRQ) + sg->offset; | |
173 | } | |
174 | ||
f3e2628b | 175 | static inline void mmci_kunmap_atomic(struct mmci_host *host, void *buffer, unsigned long *flags) |
1da177e4 | 176 | { |
f3e2628b | 177 | kunmap_atomic(buffer, KM_BIO_SRC_IRQ); |
1da177e4 LT |
178 | local_irq_restore(*flags); |
179 | } |