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Yoshihiro Shimodaafb35662011-07-04 22:21:22 +00001/*
2 * MMCIF driver.
3 *
4 * Copyright (C) 2011 Renesas Solutions Corp.
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.
9 *
10 */
11
12#ifndef _SH_MMCIF_H_
13#define _SH_MMCIF_H_
14
15struct sh_mmcif_regs {
16 unsigned long ce_cmd_set;
17 unsigned long reserved;
18 unsigned long ce_arg;
19 unsigned long ce_arg_cmd12;
20 unsigned long ce_cmd_ctrl;
21 unsigned long ce_block_set;
22 unsigned long ce_clk_ctrl;
23 unsigned long ce_buf_acc;
24 unsigned long ce_resp3;
25 unsigned long ce_resp2;
26 unsigned long ce_resp1;
27 unsigned long ce_resp0;
28 unsigned long ce_resp_cmd12;
29 unsigned long ce_data;
30 unsigned long reserved2[2];
31 unsigned long ce_int;
32 unsigned long ce_int_mask;
33 unsigned long ce_host_sts1;
34 unsigned long ce_host_sts2;
35 unsigned long reserved3[11];
36 unsigned long ce_version;
37};
38
39/* CE_CMD_SET */
40#define CMD_MASK 0x3f000000
41#define CMD_SET_RTYP_NO ((0 << 23) | (0 << 22))
42/* R1/R1b/R3/R4/R5 */
43#define CMD_SET_RTYP_6B ((0 << 23) | (1 << 22))
44/* R2 */
45#define CMD_SET_RTYP_17B ((1 << 23) | (0 << 22))
46/* R1b */
47#define CMD_SET_RBSY (1 << 21)
48#define CMD_SET_CCSEN (1 << 20)
49/* 1: on data, 0: no data */
50#define CMD_SET_WDAT (1 << 19)
51/* 1: write to card, 0: read from card */
52#define CMD_SET_DWEN (1 << 18)
53/* 1: multi block trans, 0: single */
54#define CMD_SET_CMLTE (1 << 17)
55/* 1: CMD12 auto issue */
56#define CMD_SET_CMD12EN (1 << 16)
57/* index check */
58#define CMD_SET_RIDXC_INDEX ((0 << 15) | (0 << 14))
59/* check bits check */
60#define CMD_SET_RIDXC_BITS ((0 << 15) | (1 << 14))
61/* no check */
62#define CMD_SET_RIDXC_NO ((1 << 15) | (0 << 14))
63/* 1: CRC7 check*/
64#define CMD_SET_CRC7C ((0 << 13) | (0 << 12))
65/* 1: check bits check*/
66#define CMD_SET_CRC7C_BITS ((0 << 13) | (1 << 12))
67/* 1: internal CRC7 check*/
68#define CMD_SET_CRC7C_INTERNAL ((1 << 13) | (0 << 12))
69/* 1: CRC16 check*/
70#define CMD_SET_CRC16C (1 << 10)
71/* 1: not receive CRC status */
72#define CMD_SET_CRCSTE (1 << 8)
73/* 1: tran mission bit "Low" */
74#define CMD_SET_TBIT (1 << 7)
75/* 1: open/drain */
76#define CMD_SET_OPDM (1 << 6)
77#define CMD_SET_CCSH (1 << 5)
78/* 1bit */
79#define CMD_SET_DATW_1 ((0 << 1) | (0 << 0))
80/* 4bit */
81#define CMD_SET_DATW_4 ((0 << 1) | (1 << 0))
82/* 8bit */
83#define CMD_SET_DATW_8 ((1 << 1) | (0 << 0))
84
85/* CE_CMD_CTRL */
86#define CMD_CTRL_BREAK (1 << 0)
87
88/* CE_BLOCK_SET */
89#define BLOCK_SIZE_MASK 0x0000ffff
90
91/* CE_CLK_CTRL */
92#define CLK_ENABLE (1 << 24)
93#define CLK_CLEAR ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16))
94#define CLK_PCLK ((1 << 19) | (1 << 18) | (1 << 17) | (1 << 16))
95/* respons timeout */
96#define SRSPTO_256 ((1 << 13) | (0 << 12))
97/* respons busy timeout */
98#define SRBSYTO_29 ((1 << 11) | (1 << 10) | (1 << 9) | (1 << 8))
99/* read/write timeout */
100#define SRWDTO_29 ((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4))
101/* ccs timeout */
102#define SCCSTO_29 ((1 << 3) | (1 << 2) | (1 << 1) | (1 << 0))
103
104/* CE_BUF_ACC */
105#define BUF_ACC_DMAWEN (1 << 25)
106#define BUF_ACC_DMAREN (1 << 24)
107#define BUF_ACC_BUSW_32 (0 << 17)
108#define BUF_ACC_BUSW_16 (1 << 17)
109#define BUF_ACC_ATYP (1 << 16)
110
111/* CE_INT */
112#define INT_CCSDE (1 << 29)
113#define INT_CMD12DRE (1 << 26)
114#define INT_CMD12RBE (1 << 25)
115#define INT_CMD12CRE (1 << 24)
116#define INT_DTRANE (1 << 23)
117#define INT_BUFRE (1 << 22)
118#define INT_BUFWEN (1 << 21)
119#define INT_BUFREN (1 << 20)
120#define INT_CCSRCV (1 << 19)
121#define INT_RBSYE (1 << 17)
122#define INT_CRSPE (1 << 16)
123#define INT_CMDVIO (1 << 15)
124#define INT_BUFVIO (1 << 14)
125#define INT_WDATERR (1 << 11)
126#define INT_RDATERR (1 << 10)
127#define INT_RIDXERR (1 << 9)
128#define INT_RSPERR (1 << 8)
129#define INT_CCSTO (1 << 5)
130#define INT_CRCSTO (1 << 4)
131#define INT_WDATTO (1 << 3)
132#define INT_RDATTO (1 << 2)
133#define INT_RBSYTO (1 << 1)
134#define INT_RSPTO (1 << 0)
135#define INT_ERR_STS (INT_CMDVIO | INT_BUFVIO | INT_WDATERR | \
136 INT_RDATERR | INT_RIDXERR | INT_RSPERR | \
137 INT_CCSTO | INT_CRCSTO | INT_WDATTO | \
138 INT_RDATTO | INT_RBSYTO | INT_RSPTO)
139#define INT_START_MAGIC 0xD80430C0
140
141/* CE_INT_MASK */
142#define MASK_ALL 0x00000000
143#define MASK_MCCSDE (1 << 29)
144#define MASK_MCMD12DRE (1 << 26)
145#define MASK_MCMD12RBE (1 << 25)
146#define MASK_MCMD12CRE (1 << 24)
147#define MASK_MDTRANE (1 << 23)
148#define MASK_MBUFRE (1 << 22)
149#define MASK_MBUFWEN (1 << 21)
150#define MASK_MBUFREN (1 << 20)
151#define MASK_MCCSRCV (1 << 19)
152#define MASK_MRBSYE (1 << 17)
153#define MASK_MCRSPE (1 << 16)
154#define MASK_MCMDVIO (1 << 15)
155#define MASK_MBUFVIO (1 << 14)
156#define MASK_MWDATERR (1 << 11)
157#define MASK_MRDATERR (1 << 10)
158#define MASK_MRIDXERR (1 << 9)
159#define MASK_MRSPERR (1 << 8)
160#define MASK_MCCSTO (1 << 5)
161#define MASK_MCRCSTO (1 << 4)
162#define MASK_MWDATTO (1 << 3)
163#define MASK_MRDATTO (1 << 2)
164#define MASK_MRBSYTO (1 << 1)
165#define MASK_MRSPTO (1 << 0)
166
167/* CE_HOST_STS1 */
168#define STS1_CMDSEQ (1 << 31)
169
170/* CE_HOST_STS2 */
171#define STS2_CRCSTE (1 << 31)
172#define STS2_CRC16E (1 << 30)
173#define STS2_AC12CRCE (1 << 29)
174#define STS2_RSPCRC7E (1 << 28)
175#define STS2_CRCSTEBE (1 << 27)
176#define STS2_RDATEBE (1 << 26)
177#define STS2_AC12REBE (1 << 25)
178#define STS2_RSPEBE (1 << 24)
179#define STS2_AC12IDXE (1 << 23)
180#define STS2_RSPIDXE (1 << 22)
181#define STS2_CCSTO (1 << 15)
182#define STS2_RDATTO (1 << 14)
183#define STS2_DATBSYTO (1 << 13)
184#define STS2_CRCSTTO (1 << 12)
185#define STS2_AC12BSYTO (1 << 11)
186#define STS2_RSPBSYTO (1 << 10)
187#define STS2_AC12RSPTO (1 << 9)
188#define STS2_RSPTO (1 << 8)
189
190#define STS2_CRC_ERR (STS2_CRCSTE | STS2_CRC16E | \
191 STS2_AC12CRCE | STS2_RSPCRC7E | STS2_CRCSTEBE)
192#define STS2_TIMEOUT_ERR (STS2_CCSTO | STS2_RDATTO | \
193 STS2_DATBSYTO | STS2_CRCSTTO | \
194 STS2_AC12BSYTO | STS2_RSPBSYTO | \
195 STS2_AC12RSPTO | STS2_RSPTO)
196
197/* CE_VERSION */
198#define SOFT_RST_ON (1 << 31)
199#define SOFT_RST_OFF (0 << 31)
200
201#define CLKDEV_EMMC_DATA 52000000 /* 52MHz */
202#define CLKDEV_MMC_INIT 400000 /* 100 - 400 KHz */
203
204#define MMC_BUS_WIDTH_1 0
205#define MMC_BUS_WIDTH_4 2
206#define MMC_BUS_WIDTH_8 3
207
208struct sh_mmcif_host {
209 struct mmc_data *data;
210 struct sh_mmcif_regs *regs;
211 unsigned int clk;
212 int bus_width;
213 u16 wait_int;
214 u16 sd_error;
215 u8 last_cmd;
216};
217
218static inline u32 sh_mmcif_read(unsigned long *reg)
219{
220 return readl(reg);
221}
222
223static inline void sh_mmcif_write(u32 val, unsigned long *reg)
224{
225 writel(val, reg);
226}
227
228static inline void sh_mmcif_bitset(u32 val, unsigned long *reg)
229{
230 sh_mmcif_write(val | sh_mmcif_read(reg), reg);
231}
232
233static inline void sh_mmcif_bitclr(u32 val, unsigned long *reg)
234{
235 sh_mmcif_write(~val & sh_mmcif_read(reg), reg);
236}
237
238#endif /* _SH_MMCIF_H_ */