hw/sd/sdhci-internal.h

   1 /*
   2  * SD Association Host Standard Specification v2.0 controller emulation
   3  *
   4  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   5  * Mitsyanko Igor <i.mitsyanko@samsung.com>
   6  * Peter A.G. Crosthwaite <peter.crosthwaite@petalogix.com>
   7  *
   8  * Based on MMC controller for Samsung S5PC1xx-based board emulation
   9  * by Alexey Merkulov and Vladimir Monakhov.
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the
  13  * Free Software Foundation; either version 2 of the License, or (at your
  14  * option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  19  * See the GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24 #ifndef SDHCI_INTERNAL_H
  25 #define SDHCI_INTERNAL_H
  26
  27 /* R/W SDMA System Address register 0x0 */
  28 #define SDHC_SYSAD                     0x00
  29
  30 /* R/W Host DMA Buffer Boundary and Transfer Block Size Register 0x0 */
  31 #define SDHC_BLKSIZE                   0x04
  32
  33 /* R/W Blocks count for current transfer 0x0 */
  34 #define SDHC_BLKCNT                    0x06
  35
  36 /* R/W Command Argument Register 0x0 */
  37 #define SDHC_ARGUMENT                  0x08
  38
  39 /* R/W Transfer Mode Setting Register 0x0 */
  40 #define SDHC_TRNMOD                    0x0C
  41 #define SDHC_TRNS_DMA                  0x0001
  42 #define SDHC_TRNS_BLK_CNT_EN           0x0002
  43 #define SDHC_TRNS_ACMD12               0x0004
  44 #define SDHC_TRNS_READ                 0x0010
  45 #define SDHC_TRNS_MULTI                0x0020
  46 #define SDHC_TRNMOD_MASK               0x0037
  47
  48 /* R/W Command Register 0x0 */
  49 #define SDHC_CMDREG                    0x0E
  50 #define SDHC_CMD_RSP_WITH_BUSY         (3 << 0)
  51 #define SDHC_CMD_DATA_PRESENT          (1 << 5)
  52 #define SDHC_CMD_SUSPEND               (1 << 6)
  53 #define SDHC_CMD_RESUME                (1 << 7)
  54 #define SDHC_CMD_ABORT                 ((1 << 6)|(1 << 7))
  55 #define SDHC_CMD_TYPE_MASK             ((1 << 6)|(1 << 7))
  56 #define SDHC_COMMAND_TYPE(x)           ((x) & SDHC_CMD_TYPE_MASK)
  57
  58 /* ROC Response Register 0 0x0 */
  59 #define SDHC_RSPREG0                   0x10
  60 /* ROC Response Register 1 0x0 */
  61 #define SDHC_RSPREG1                   0x14
  62 /* ROC Response Register 2 0x0 */
  63 #define SDHC_RSPREG2                   0x18
  64 /* ROC Response Register 3 0x0 */
  65 #define SDHC_RSPREG3                   0x1C
  66
  67 /* R/W Buffer Data Register 0x0 */
  68 #define SDHC_BDATA                     0x20
  69
  70 /* R/ROC Present State Register 0x000A0000 */
  71 #define SDHC_PRNSTS                    0x24
  72 #define SDHC_CMD_INHIBIT               0x00000001
  73 #define SDHC_DATA_INHIBIT              0x00000002
  74 #define SDHC_DAT_LINE_ACTIVE           0x00000004
  75 #define SDHC_DOING_WRITE               0x00000100
  76 #define SDHC_DOING_READ                0x00000200
  77 #define SDHC_SPACE_AVAILABLE           0x00000400
  78 #define SDHC_DATA_AVAILABLE            0x00000800
  79 #define SDHC_CARD_PRESENT              0x00010000
  80 #define SDHC_CARD_DETECT               0x00040000
  81 #define SDHC_WRITE_PROTECT             0x00080000
  82 #define TRANSFERRING_DATA(x)           \
  83     ((x) & (SDHC_DOING_READ | SDHC_DOING_WRITE))
  84
  85 /* R/W Host control Register 0x0 */
  86 #define SDHC_HOSTCTL                   0x28
  87 #define SDHC_CTRL_DMA_CHECK_MASK       0x18
  88 #define SDHC_CTRL_SDMA                 0x00
  89 #define SDHC_CTRL_ADMA1_32             0x08
  90 #define SDHC_CTRL_ADMA2_32             0x10
  91 #define SDHC_CTRL_ADMA2_64             0x18
  92 #define SDHC_DMA_TYPE(x)               ((x) & SDHC_CTRL_DMA_CHECK_MASK)
  93
  94 /* R/W Power Control Register 0x0 */
  95 #define SDHC_PWRCON                    0x29
  96 #define SDHC_POWER_ON                  (1 << 0)
  97
  98 /* R/W Block Gap Control Register 0x0 */
  99 #define SDHC_BLKGAP                    0x2A
 100 #define SDHC_STOP_AT_GAP_REQ           0x01
 101 #define SDHC_CONTINUE_REQ              0x02
 102
 103 /* R/W WakeUp Control Register 0x0 */
 104 #define SDHC_WAKCON                    0x2B
 105 #define SDHC_WKUP_ON_INS               (1 << 1)
 106 #define SDHC_WKUP_ON_RMV               (1 << 2)
 107
 108 /* CLKCON */
 109 #define SDHC_CLKCON                    0x2C
 110 #define SDHC_CLOCK_INT_STABLE          0x0002
 111 #define SDHC_CLOCK_INT_EN              0x0001
 112 #define SDHC_CLOCK_SDCLK_EN            (1 << 2)
 113 #define SDHC_CLOCK_CHK_MASK            0x0007
 114 #define SDHC_CLOCK_IS_ON(x)            \
 115     (((x) & SDHC_CLOCK_CHK_MASK) == SDHC_CLOCK_CHK_MASK)
 116
 117 /* R/W Timeout Control Register 0x0 */
 118 #define SDHC_TIMEOUTCON                0x2E
 119
 120 /* R/W Software Reset Register 0x0 */
 121 #define SDHC_SWRST                     0x2F
 122 #define SDHC_RESET_ALL                 0x01
 123 #define SDHC_RESET_CMD                 0x02
 124 #define SDHC_RESET_DATA                0x04
 125
 126 /* ROC/RW1C Normal Interrupt Status Register 0x0 */
 127 #define SDHC_NORINTSTS                 0x30
 128 #define SDHC_NIS_ERR                   0x8000
 129 #define SDHC_NIS_CMDCMP                0x0001
 130 #define SDHC_NIS_TRSCMP                0x0002
 131 #define SDHC_NIS_BLKGAP                0x0004
 132 #define SDHC_NIS_DMA                   0x0008
 133 #define SDHC_NIS_WBUFRDY               0x0010
 134 #define SDHC_NIS_RBUFRDY               0x0020
 135 #define SDHC_NIS_INSERT                0x0040
 136 #define SDHC_NIS_REMOVE                0x0080
 137 #define SDHC_NIS_CARDINT               0x0100
 138
 139 /* ROC/RW1C Error Interrupt Status Register 0x0 */
 140 #define SDHC_ERRINTSTS                 0x32
 141 #define SDHC_EIS_CMDTIMEOUT            0x0001
 142 #define SDHC_EIS_BLKGAP                0x0004
 143 #define SDHC_EIS_CMDIDX                0x0008
 144 #define SDHC_EIS_CMD12ERR              0x0100
 145 #define SDHC_EIS_ADMAERR               0x0200
 146
 147 /* R/W Normal Interrupt Status Enable Register 0x0 */
 148 #define SDHC_NORINTSTSEN               0x34
 149 #define SDHC_NISEN_CMDCMP              0x0001
 150 #define SDHC_NISEN_TRSCMP              0x0002
 151 #define SDHC_NISEN_DMA                 0x0008
 152 #define SDHC_NISEN_WBUFRDY             0x0010
 153 #define SDHC_NISEN_RBUFRDY             0x0020
 154 #define SDHC_NISEN_INSERT              0x0040
 155 #define SDHC_NISEN_REMOVE              0x0080
 156 #define SDHC_NISEN_CARDINT             0x0100
 157
 158 /* R/W Error Interrupt Status Enable Register 0x0 */
 159 #define SDHC_ERRINTSTSEN               0x36
 160 #define SDHC_EISEN_CMDTIMEOUT          0x0001
 161 #define SDHC_EISEN_BLKGAP              0x0004
 162 #define SDHC_EISEN_CMDIDX              0x0008
 163 #define SDHC_EISEN_ADMAERR             0x0200
 164
 165 /* R/W Normal Interrupt Signal Enable Register 0x0 */
 166 #define SDHC_NORINTSIGEN               0x38
 167 #define SDHC_NORINTSIG_INSERT          (1 << 6)
 168 #define SDHC_NORINTSIG_REMOVE          (1 << 7)
 169
 170 /* R/W Error Interrupt Signal Enable Register 0x0 */
 171 #define SDHC_ERRINTSIGEN               0x3A
 172
 173 /* ROC Auto CMD12 error status register 0x0 */
 174 #define SDHC_ACMD12ERRSTS              0x3C
 175
 176 /* HWInit Capabilities Register 0x05E80080 */
 177 #define SDHC_CAPAREG                   0x40
 178 #define SDHC_CAN_DO_DMA                0x00400000
 179 #define SDHC_CAN_DO_ADMA2              0x00080000
 180 #define SDHC_CAN_DO_ADMA1              0x00100000
 181 #define SDHC_64_BIT_BUS_SUPPORT        (1 << 28)
 182 #define SDHC_CAPAB_BLOCKSIZE(x)        (((x) >> 16) & 0x3)
 183
 184 /* HWInit Maximum Current Capabilities Register 0x0 */
 185 #define SDHC_MAXCURR                   0x48
 186
 187 /* W Force Event Auto CMD12 Error Interrupt Register 0x0000 */
 188 #define SDHC_FEAER                     0x50
 189 /* W Force Event Error Interrupt Register Error Interrupt 0x0000 */
 190 #define SDHC_FEERR                     0x52
 191
 192 /* R/W ADMA Error Status Register 0x00 */
 193 #define SDHC_ADMAERR                   0x54
 194 #define SDHC_ADMAERR_LENGTH_MISMATCH   (1 << 2)
 195 #define SDHC_ADMAERR_STATE_ST_STOP     (0 << 0)
 196 #define SDHC_ADMAERR_STATE_ST_FDS      (1 << 0)
 197 #define SDHC_ADMAERR_STATE_ST_TFR      (3 << 0)
 198 #define SDHC_ADMAERR_STATE_MASK        (3 << 0)
 199
 200 /* R/W ADMA System Address Register 0x00 */
 201 #define SDHC_ADMASYSADDR               0x58
 202 #define SDHC_ADMA_ATTR_SET_LEN         (1 << 4)
 203 #define SDHC_ADMA_ATTR_ACT_TRAN        (1 << 5)
 204 #define SDHC_ADMA_ATTR_ACT_LINK        (3 << 4)
 205 #define SDHC_ADMA_ATTR_INT             (1 << 2)
 206 #define SDHC_ADMA_ATTR_END             (1 << 1)
 207 #define SDHC_ADMA_ATTR_VALID           (1 << 0)
 208 #define SDHC_ADMA_ATTR_ACT_MASK        ((1 << 4)|(1 << 5))
 209
 210 /* Slot interrupt status */
 211 #define SDHC_SLOT_INT_STATUS            0xFC
 212
 213 /* HWInit Host Controller Version Register 0x0401 */
 214 #define SDHC_HCVER                      0xFE
 215 #define SD_HOST_SPECv2_VERS             0x2401
 216
 217 #define SDHC_REGISTERS_MAP_SIZE         0x100
 218 #define SDHC_INSERTION_DELAY            (NANOSECONDS_PER_SECOND)
 219 #define SDHC_TRANSFER_DELAY             100
 220 #define SDHC_ADMA_DESCS_PER_DELAY       5
 221 #define SDHC_CMD_RESPONSE               (3 << 0)
 222
 223 enum {
 224     sdhc_not_stopped = 0, /* normal SDHC state */
 225     sdhc_gap_read   = 1,  /* SDHC stopped at block gap during read operation */
 226     sdhc_gap_write  = 2   /* SDHC stopped at block gap during write operation */
 227 };
 228
 229 #endif