xref: /openbmc/u-boot/include/atmel_mci.h (revision 8d811ca3)
1 /*
2  * Copyright (C) 2005-2006 Atmel Corporation
3  *
4  * See file CREDITS for list of people who contributed to this
5  * project.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License as
9  * published by the Free Software Foundation; either version 2 of
10  * the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20  * MA 02111-1307 USA
21  */
22 #ifndef __ATMEL_MCI_H__
23 #define __ATMEL_MCI_H__
24 
25 int atmel_mci_init(void *regs);
26 
27 #ifndef __ASSEMBLY__
28 
29 /*
30  * Structure for struct SoC access.
31  * Names starting with '_' are fillers.
32  */
33 typedef struct atmel_mci {
34 	/*	reg	Offset */
35 	u32	cr;	/* 0x00 */
36 	u32	mr;	/* 0x04 */
37 	u32	dtor;	/* 0x08 */
38 	u32	sdcr;	/* 0x0c */
39 	u32	argr;	/* 0x10 */
40 	u32	cmdr;	/* 0x14 */
41 	u32	_18;	/* 0x18 */
42 	u32	_1c;	/* 0x1c */
43 	u32	rspr;	/* 0x20 */
44 	u32	rspr1;	/* 0x24 */
45 	u32	rspr2;	/* 0x28 */
46 	u32	rspr3;	/* 0x2c */
47 	u32	rdr;	/* 0x30 */
48 	u32	tdr;	/* 0x34 */
49 	u32	_38;	/* 0x38 */
50 	u32	_3c;	/* 0x3c */
51 	u32	sr;	/* 0x40 */
52 	u32	ier;	/* 0x44 */
53 	u32	idr;	/* 0x48 */
54 	u32	imr;	/* 0x4c */
55 } atmel_mci_t;
56 
57 #endif /* __ASSEMBLY__ */
58 
59 /* Bitfields in CR */
60 #define MMCI_MCIEN_OFFSET			0
61 #define MMCI_MCIEN_SIZE				1
62 #define MMCI_MCIDIS_OFFSET			1
63 #define MMCI_MCIDIS_SIZE			1
64 #define MMCI_PWSEN_OFFSET			2
65 #define MMCI_PWSEN_SIZE				1
66 #define MMCI_PWSDIS_OFFSET			3
67 #define MMCI_PWSDIS_SIZE			1
68 #define MMCI_SWRST_OFFSET			7
69 #define MMCI_SWRST_SIZE				1
70 
71 /* Bitfields in MR */
72 #define MMCI_CLKDIV_OFFSET			0
73 #define MMCI_CLKDIV_SIZE			8
74 #define MMCI_PWSDIV_OFFSET			8
75 #define MMCI_PWSDIV_SIZE			3
76 #define MMCI_RDPROOF_OFFSET			11
77 #define MMCI_RDPROOF_SIZE			1
78 #define MMCI_WRPROOF_OFFSET			12
79 #define MMCI_WRPROOF_SIZE			1
80 #define MMCI_PDCPADV_OFFSET			14
81 #define MMCI_PDCPADV_SIZE			1
82 #define MMCI_PDCMODE_OFFSET			15
83 #define MMCI_PDCMODE_SIZE			1
84 #define MMCI_BLKLEN_OFFSET			16
85 #define MMCI_BLKLEN_SIZE			16
86 
87 /* Bitfields in DTOR */
88 #define MMCI_DTOCYC_OFFSET			0
89 #define MMCI_DTOCYC_SIZE			4
90 #define MMCI_DTOMUL_OFFSET			4
91 #define MMCI_DTOMUL_SIZE			3
92 
93 /* Bitfields in SDCR */
94 #define MMCI_SCDSEL_OFFSET			0
95 #define MMCI_SCDSEL_SIZE			4
96 #define MMCI_SCDBUS_OFFSET			7
97 #define MMCI_SCDBUS_SIZE			1
98 
99 /* Bitfields in ARGR */
100 #define MMCI_ARG_OFFSET				0
101 #define MMCI_ARG_SIZE				32
102 
103 /* Bitfields in CMDR */
104 #define MMCI_CMDNB_OFFSET			0
105 #define MMCI_CMDNB_SIZE				6
106 #define MMCI_RSPTYP_OFFSET			6
107 #define MMCI_RSPTYP_SIZE			2
108 #define MMCI_SPCMD_OFFSET			8
109 #define MMCI_SPCMD_SIZE				3
110 #define MMCI_OPDCMD_OFFSET			11
111 #define MMCI_OPDCMD_SIZE			1
112 #define MMCI_MAXLAT_OFFSET			12
113 #define MMCI_MAXLAT_SIZE			1
114 #define MMCI_TRCMD_OFFSET			16
115 #define MMCI_TRCMD_SIZE				2
116 #define MMCI_TRDIR_OFFSET			18
117 #define MMCI_TRDIR_SIZE				1
118 #define MMCI_TRTYP_OFFSET			19
119 #define MMCI_TRTYP_SIZE				2
120 
121 /* Bitfields in RSPRx */
122 #define MMCI_RSP_OFFSET				0
123 #define MMCI_RSP_SIZE				32
124 
125 /* Bitfields in SR/IER/IDR/IMR */
126 #define MMCI_CMDRDY_OFFSET			0
127 #define MMCI_CMDRDY_SIZE			1
128 #define MMCI_RXRDY_OFFSET			1
129 #define MMCI_RXRDY_SIZE				1
130 #define MMCI_TXRDY_OFFSET			2
131 #define MMCI_TXRDY_SIZE				1
132 #define MMCI_BLKE_OFFSET			3
133 #define MMCI_BLKE_SIZE				1
134 #define MMCI_DTIP_OFFSET			4
135 #define MMCI_DTIP_SIZE				1
136 #define MMCI_NOTBUSY_OFFSET			5
137 #define MMCI_NOTBUSY_SIZE			1
138 #define MMCI_ENDRX_OFFSET			6
139 #define MMCI_ENDRX_SIZE				1
140 #define MMCI_ENDTX_OFFSET			7
141 #define MMCI_ENDTX_SIZE				1
142 #define MMCI_RXBUFF_OFFSET			14
143 #define MMCI_RXBUFF_SIZE			1
144 #define MMCI_TXBUFE_OFFSET			15
145 #define MMCI_TXBUFE_SIZE			1
146 #define MMCI_RINDE_OFFSET			16
147 #define MMCI_RINDE_SIZE				1
148 #define MMCI_RDIRE_OFFSET			17
149 #define MMCI_RDIRE_SIZE				1
150 #define MMCI_RCRCE_OFFSET			18
151 #define MMCI_RCRCE_SIZE				1
152 #define MMCI_RENDE_OFFSET			19
153 #define MMCI_RENDE_SIZE				1
154 #define MMCI_RTOE_OFFSET			20
155 #define MMCI_RTOE_SIZE				1
156 #define MMCI_DCRCE_OFFSET			21
157 #define MMCI_DCRCE_SIZE				1
158 #define MMCI_DTOE_OFFSET			22
159 #define MMCI_DTOE_SIZE				1
160 #define MMCI_OVRE_OFFSET			30
161 #define MMCI_OVRE_SIZE				1
162 #define MMCI_UNRE_OFFSET			31
163 #define MMCI_UNRE_SIZE				1
164 
165 /* Constants for DTOMUL */
166 #define MMCI_DTOMUL_1_CYCLE			0
167 #define MMCI_DTOMUL_16_CYCLES			1
168 #define MMCI_DTOMUL_128_CYCLES			2
169 #define MMCI_DTOMUL_256_CYCLES			3
170 #define MMCI_DTOMUL_1024_CYCLES			4
171 #define MMCI_DTOMUL_4096_CYCLES			5
172 #define MMCI_DTOMUL_65536_CYCLES		6
173 #define MMCI_DTOMUL_1048576_CYCLES		7
174 
175 /* Constants for RSPTYP */
176 #define MMCI_RSPTYP_NO_RESP			0
177 #define MMCI_RSPTYP_48_BIT_RESP			1
178 #define MMCI_RSPTYP_136_BIT_RESP		2
179 
180 /* Constants for SPCMD */
181 #define MMCI_SPCMD_NO_SPEC_CMD			0
182 #define MMCI_SPCMD_INIT_CMD			1
183 #define MMCI_SPCMD_SYNC_CMD			2
184 #define MMCI_SPCMD_INT_CMD			4
185 #define MMCI_SPCMD_INT_RESP			5
186 
187 /* Constants for TRCMD */
188 #define MMCI_TRCMD_NO_TRANS			0
189 #define MMCI_TRCMD_START_TRANS			1
190 #define MMCI_TRCMD_STOP_TRANS			2
191 
192 /* Constants for TRTYP */
193 #define MMCI_TRTYP_BLOCK			0
194 #define MMCI_TRTYP_MULTI_BLOCK			1
195 #define MMCI_TRTYP_STREAM			2
196 
197 /* Bit manipulation macros */
198 #define MMCI_BIT(name)					\
199 	(1 << MMCI_##name##_OFFSET)
200 #define MMCI_BF(name,value)				\
201 	(((value) & ((1 << MMCI_##name##_SIZE) - 1))	\
202 	 << MMCI_##name##_OFFSET)
203 #define MMCI_BFEXT(name,value)				\
204 	(((value) >> MMCI_##name##_OFFSET)\
205 	 & ((1 << MMCI_##name##_SIZE) - 1))
206 #define MMCI_BFINS(name,value,old)			\
207 	(((old) & ~(((1 << MMCI_##name##_SIZE) - 1)	\
208 		    << MMCI_##name##_OFFSET))		\
209 	 | MMCI_BF(name,value))
210 
211 #endif /* __ATMEL_MCI_H__ */
212