include/atmel_mci.h

   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 /*
  60  * NOTICE: Use of registers offsets is depreciated.
  61  * These defines will be removed once the old driver
  62  * is taken out of commision.
  63  *
  64  * Atmel MultiMedia Card Interface (MCI) registers
  65  */
  66 #define MMCI_CR                                 0x0000
  67 #define MMCI_MR                                 0x0004
  68 #define MMCI_DTOR                               0x0008
  69 #define MMCI_SDCR                               0x000c
  70 #define MMCI_ARGR                               0x0010
  71 #define MMCI_CMDR                               0x0014
  72 #define MMCI_RSPR                               0x0020
  73 #define MMCI_RSPR1                              0x0024
  74 #define MMCI_RSPR2                              0x0028
  75 #define MMCI_RSPR3                              0x002c
  76 #define MMCI_RDR                                0x0030
  77 #define MMCI_TDR                                0x0034
  78 #define MMCI_SR                                 0x0040
  79 #define MMCI_IER                                0x0044
  80 #define MMCI_IDR                                0x0048
  81 #define MMCI_IMR                                0x004c
  82
  83 /* Bitfields in CR */
  84 #define MMCI_MCIEN_OFFSET                       0
  85 #define MMCI_MCIEN_SIZE                         1
  86 #define MMCI_MCIDIS_OFFSET                      1
  87 #define MMCI_MCIDIS_SIZE                        1
  88 #define MMCI_PWSEN_OFFSET                       2
  89 #define MMCI_PWSEN_SIZE                         1
  90 #define MMCI_PWSDIS_OFFSET                      3
  91 #define MMCI_PWSDIS_SIZE                        1
  92 #define MMCI_SWRST_OFFSET                       7
  93 #define MMCI_SWRST_SIZE                         1
  94
  95 /* Bitfields in MR */
  96 #define MMCI_CLKDIV_OFFSET                      0
  97 #define MMCI_CLKDIV_SIZE                        8
  98 #define MMCI_PWSDIV_OFFSET                      8
  99 #define MMCI_PWSDIV_SIZE                        3
 100 #define MMCI_RDPROOF_OFFSET                     11
 101 #define MMCI_RDPROOF_SIZE                       1
 102 #define MMCI_WRPROOF_OFFSET                     12
 103 #define MMCI_WRPROOF_SIZE                       1
 104 #define MMCI_PDCPADV_OFFSET                     14
 105 #define MMCI_PDCPADV_SIZE                       1
 106 #define MMCI_PDCMODE_OFFSET                     15
 107 #define MMCI_PDCMODE_SIZE                       1
 108 #define MMCI_BLKLEN_OFFSET                      16
 109 #define MMCI_BLKLEN_SIZE                        16
 110
 111 /* Bitfields in DTOR */
 112 #define MMCI_DTOCYC_OFFSET                      0
 113 #define MMCI_DTOCYC_SIZE                        4
 114 #define MMCI_DTOMUL_OFFSET                      4
 115 #define MMCI_DTOMUL_SIZE                        3
 116
 117 /* Bitfields in SDCR */
 118 #define MMCI_SCDSEL_OFFSET                      0
 119 #define MMCI_SCDSEL_SIZE                        4
 120 #define MMCI_SCDBUS_OFFSET                      7
 121 #define MMCI_SCDBUS_SIZE                        1
 122
 123 /* Bitfields in ARGR */
 124 #define MMCI_ARG_OFFSET                         0
 125 #define MMCI_ARG_SIZE                           32
 126
 127 /* Bitfields in CMDR */
 128 #define MMCI_CMDNB_OFFSET                       0
 129 #define MMCI_CMDNB_SIZE                         6
 130 #define MMCI_RSPTYP_OFFSET                      6
 131 #define MMCI_RSPTYP_SIZE                        2
 132 #define MMCI_SPCMD_OFFSET                       8
 133 #define MMCI_SPCMD_SIZE                         3
 134 #define MMCI_OPDCMD_OFFSET                      11
 135 #define MMCI_OPDCMD_SIZE                        1
 136 #define MMCI_MAXLAT_OFFSET                      12
 137 #define MMCI_MAXLAT_SIZE                        1
 138 #define MMCI_TRCMD_OFFSET                       16
 139 #define MMCI_TRCMD_SIZE                         2
 140 #define MMCI_TRDIR_OFFSET                       18
 141 #define MMCI_TRDIR_SIZE                         1
 142 #define MMCI_TRTYP_OFFSET                       19
 143 #define MMCI_TRTYP_SIZE                         2
 144
 145 /* Bitfields in RSPRx */
 146 #define MMCI_RSP_OFFSET                         0
 147 #define MMCI_RSP_SIZE                           32
 148
 149 /* Bitfields in SR/IER/IDR/IMR */
 150 #define MMCI_CMDRDY_OFFSET                      0
 151 #define MMCI_CMDRDY_SIZE                        1
 152 #define MMCI_RXRDY_OFFSET                       1
 153 #define MMCI_RXRDY_SIZE                         1
 154 #define MMCI_TXRDY_OFFSET                       2
 155 #define MMCI_TXRDY_SIZE                         1
 156 #define MMCI_BLKE_OFFSET                        3
 157 #define MMCI_BLKE_SIZE                          1
 158 #define MMCI_DTIP_OFFSET                        4
 159 #define MMCI_DTIP_SIZE                          1
 160 #define MMCI_NOTBUSY_OFFSET                     5
 161 #define MMCI_NOTBUSY_SIZE                       1
 162 #define MMCI_ENDRX_OFFSET                       6
 163 #define MMCI_ENDRX_SIZE                         1
 164 #define MMCI_ENDTX_OFFSET                       7
 165 #define MMCI_ENDTX_SIZE                         1
 166 #define MMCI_RXBUFF_OFFSET                      14
 167 #define MMCI_RXBUFF_SIZE                        1
 168 #define MMCI_TXBUFE_OFFSET                      15
 169 #define MMCI_TXBUFE_SIZE                        1
 170 #define MMCI_RINDE_OFFSET                       16
 171 #define MMCI_RINDE_SIZE                         1
 172 #define MMCI_RDIRE_OFFSET                       17
 173 #define MMCI_RDIRE_SIZE                         1
 174 #define MMCI_RCRCE_OFFSET                       18
 175 #define MMCI_RCRCE_SIZE                         1
 176 #define MMCI_RENDE_OFFSET                       19
 177 #define MMCI_RENDE_SIZE                         1
 178 #define MMCI_RTOE_OFFSET                        20
 179 #define MMCI_RTOE_SIZE                          1
 180 #define MMCI_DCRCE_OFFSET                       21
 181 #define MMCI_DCRCE_SIZE                         1
 182 #define MMCI_DTOE_OFFSET                        22
 183 #define MMCI_DTOE_SIZE                          1
 184 #define MMCI_OVRE_OFFSET                        30
 185 #define MMCI_OVRE_SIZE                          1
 186 #define MMCI_UNRE_OFFSET                        31
 187 #define MMCI_UNRE_SIZE                          1
 188
 189 /* Constants for DTOMUL */
 190 #define MMCI_DTOMUL_1_CYCLE                     0
 191 #define MMCI_DTOMUL_16_CYCLES                   1
 192 #define MMCI_DTOMUL_128_CYCLES                  2
 193 #define MMCI_DTOMUL_256_CYCLES                  3
 194 #define MMCI_DTOMUL_1024_CYCLES                 4
 195 #define MMCI_DTOMUL_4096_CYCLES                 5
 196 #define MMCI_DTOMUL_65536_CYCLES                6
 197 #define MMCI_DTOMUL_1048576_CYCLES              7
 198
 199 /* Constants for RSPTYP */
 200 #define MMCI_RSPTYP_NO_RESP                     0
 201 #define MMCI_RSPTYP_48_BIT_RESP                 1
 202 #define MMCI_RSPTYP_136_BIT_RESP                2
 203
 204 /* Constants for SPCMD */
 205 #define MMCI_SPCMD_NO_SPEC_CMD                  0
 206 #define MMCI_SPCMD_INIT_CMD                     1
 207 #define MMCI_SPCMD_SYNC_CMD                     2
 208 #define MMCI_SPCMD_INT_CMD                      4
 209 #define MMCI_SPCMD_INT_RESP                     5
 210
 211 /* Constants for TRCMD */
 212 #define MMCI_TRCMD_NO_TRANS                     0
 213 #define MMCI_TRCMD_START_TRANS                  1
 214 #define MMCI_TRCMD_STOP_TRANS                   2
 215
 216 /* Constants for TRTYP */
 217 #define MMCI_TRTYP_BLOCK                        0
 218 #define MMCI_TRTYP_MULTI_BLOCK                  1
 219 #define MMCI_TRTYP_STREAM                       2
 220
 221 /* Bit manipulation macros */
 222 #define MMCI_BIT(name)                                  \
 223         (1 << MMCI_##name##_OFFSET)
 224 #define MMCI_BF(name,value)                             \
 225         (((value) & ((1 << MMCI_##name##_SIZE) - 1))    \
 226          << MMCI_##name##_OFFSET)
 227 #define MMCI_BFEXT(name,value)                          \
 228         (((value) >> MMCI_##name##_OFFSET)\
 229          & ((1 << MMCI_##name##_SIZE) - 1))
 230 #define MMCI_BFINS(name,value,old)                      \
 231         (((old) & ~(((1 << MMCI_##name##_SIZE) - 1)     \
 232                     << MMCI_##name##_OFFSET))           \
 233          | MMCI_BF(name,value))
 234
 235 /*
 236  * NOTICE: Use of registers offsets is depreciated.
 237  * These defines will be removed once the old driver
 238  * is taken out of commision.
 239  *
 240  * Register access macros
 241  */
 242 #define mmci_readl(reg)                                 \
 243         readl((void *)ATMEL_BASE_MMCI + MMCI_##reg)
 244 #define mmci_writel(reg,value)                          \
 245         writel((value), (void *)ATMEL_BASE_MMCI + MMCI_##reg)
 246
 247 #endif /* __ATMEL_MCI_H__ */