drivers/mmc/host/moxart.h

   1 /* MOXART MMC/SD device driver (based on MOXA sources)
   2  * Copyright (C) 2013 Jonas Jensen <jonas.jensen@gmail.com>
   3  * This program is free software; you can redistribute it and/or modify it
   4  * under the terms of the GNU General Public License as published by the
   5  * Free Software Foundation; either version 2 of the License,
   6  * or (at your option) any later version. */
   7
   8 #ifndef _MOXART_H
   9 #define _MOXART_H
  10
  11 #define MSD_CMD_REG             0
  12 #define MSD_ARG_REG             4
  13 #define MSD_RESP0_REG           8
  14 #define MSD_RESP1_REG           0x0c
  15 #define MSD_RESP2_REG           0x10
  16 #define MSD_RESP3_REG           0x14
  17 #define MSD_RESP_CMD_REG        0x18
  18 #define MSD_DATA_CTRL_REG       0x1c
  19 #define MSD_DATA_TIMER_REG      0x20
  20 #define MSD_DATA_LEN_REG        0x24
  21 #define MSD_STATUS_REG          0x28
  22 #define MSD_CLEAR_REG           0x2c
  23 #define MSD_INT_MASK_REG        0x30
  24 #define MSD_POWER_CTRL_REG      0x34
  25 #define MSD_CLOCK_CTRL_REG      0x38
  26 #define MSD_BUS_WIDTH_REG       0x3c
  27 #define MSD_DATA_WIN_REG        0x40
  28 #define MSD_FEATURE_REG         0x44
  29 #define MSD_REVISION_REG        0x48
  30
  31
  32 #define MMC_RSP_SHORT   (1 << 0)
  33 #define MMC_RSP_LONG    (2 << 0)
  34 #define MMC_RSP_MASK    (3 << 0)
  35 #define MMC_ERR_NONE    0
  36 #define MMC_ERR_TIMEOUT 1
  37 #define MMC_MODE_MMC    0
  38 #define MMC_MODE_SD             1
  39 #define MMC_ERR_BADCRC  2
  40 #define MMC_VDD_360     23
  41
  42 #define MSD_RETRY_COUNT         100
  43
  44 #define SD_APP_SET_BUS_WIDTH    6   /* ac   [1:0] bus width    R1  */
  45
  46 struct moxart_reg {
  47         unsigned int    command;
  48 #define MSD_SDC_RST                     (1<<10)
  49 #define MSD_CMD_EN                      (1<<9)
  50 #define MSD_APP_CMD                     (1<<8)
  51 #define MSD_LONG_RSP                    (1<<7)
  52 #define MSD_NEED_RSP                    (1<<6)
  53 #define MSD_CMD_IDX_MASK                0x3f
  54         unsigned int    argument;
  55         unsigned int    response0;
  56         unsigned int    response1;
  57         unsigned int    response2;
  58         unsigned int    response3;
  59         unsigned int    response_command;
  60 #define MSD_RSP_CMD_APP                 (1<<6)
  61 #define MSD_RSP_CMD_IDX_MASK            0x3f
  62         unsigned int    data_control;
  63 #define MSD_DATA_EN                     (1<<6)
  64 #define MSD_DMA_EN                      (1<<5)
  65 #define MSD_DATA_WRITE                  (1<<4)
  66 #define MSD_BLK_SIZE_MASK               0x0f
  67         unsigned int    data_timer;
  68         unsigned int    data_length;
  69 #define MSD_DATA_LEN_MASK               0xffffff
  70         unsigned int    status;
  71 #define MSD_WRITE_PROT                  (1<<12)
  72 #define MSD_CARD_DETECT                 (1<<11)
  73 #define MSD_CARD_CHANGE                 (1<<10)
  74 #define MSD_FIFO_ORUN                   (1<<9)
  75 #define MSD_FIFO_URUN                   (1<<8)
  76 #define MSD_DATA_END                    (1<<7)
  77 #define MSD_CMD_SENT                    (1<<6)
  78 #define MSD_DATA_CRC_OK                 (1<<5)
  79 #define MSD_RSP_CRC_OK                  (1<<4)
  80 #define MSD_DATA_TIMEOUT                (1<<3)
  81 #define MSD_RSP_TIMEOUT                 (1<<2)
  82 #define MSD_DATA_CRC_FAIL               (1<<1)
  83 #define MSD_RSP_CRC_FAIL                (1<<0)
  84         unsigned int    clear;
  85 #define MSD_CLR_CARD_CHANGE             (1<<10)
  86 #define MSD_CLR_FIFO_ORUN               (1<<9)
  87 #define MSD_CLR_FIFO_URUN               (1<<8)
  88 #define MSD_CLR_DATA_END                (1<<7)
  89 #define MSD_CLR_CMD_SENT                (1<<6)
  90 #define MSD_CLR_DATA_CRC_OK             (1<<5)
  91 #define MSD_CLR_RSP_CRC_OK              (1<<4)
  92 #define MSD_CLR_DATA_TIMEOUT            (1<<3)
  93 #define MSD_CLR_RSP_TIMEOUT             (1<<2)
  94 #define MSD_CLR_DATA_CRC_FAIL           (1<<1)
  95 #define MSD_CLR_RSP_CRC_FAIL            (1<<0)
  96         unsigned int    interrupt_mask;
  97 #define MSD_INT_CARD_CHANGE             (1<<10)
  98 #define MSD_INT_FIFO_ORUN               (1<<9)
  99 #define MSD_INT_FIFO_URUN               (1<<8)
 100 #define MSD_INT_DATA_END                (1<<7)
 101 #define MSD_INT_CMD_SENT                (1<<6)
 102 #define MSD_INT_DATA_CRC_OK             (1<<5)
 103 #define MSD_INT_RSP_CRC_OK              (1<<4)
 104 #define MSD_INT_DATA_TIMEOUT            (1<<3)
 105 #define MSD_INT_RSP_TIMEOUT             (1<<2)
 106 #define MSD_INT_DATA_CRC_FAIL           (1<<1)
 107 #define MSD_INT_RSP_CRC_FAIL            (1<<0)
 108         unsigned int    power_control;
 109 #define MSD_SD_POWER_ON                 (1<<4)
 110 #define MSD_SD_POWER_MASK               0x0f
 111         unsigned int    clock_control;
 112 #define MSD_CLK_DIS                     (1<<8)
 113 #define MSD_CLK_SD                      (1<<7)
 114 #define MSD_CLK_DIV_MASK                0x7f
 115         unsigned int    bus_width;
 116 #define MSD_WIDE_BUS_SUPPORT            (1<<3)
 117 #define MSD_WIDE_BUS                    (1<<2)  /* bus width=4 */
 118 #define MSD_SINGLE_BUS                  (1<<0)  /* bus width=1 */
 119         unsigned int    data_window;
 120         unsigned int    feature;
 121 #define MSD_CPRM_FUNCTION               (1<<8)
 122         unsigned int    revision;
 123 };
 124
 125 struct moxart_host {
 126         struct mmc_host *mmc;
 127         spinlock_t lock;
 128         struct moxart_reg *reg;
 129         struct apb_dma_priv *dma;
 130 #ifdef MSD_SUPPORT_GET_CLOCK
 131         unsigned int sysclk;
 132 #endif
 133         struct mmc_request *mrq;
 134         struct mmc_data *data;
 135
 136         struct scatterlist *cur_sg; /* Current SG entry */
 137         unsigned int num_sg;    /* Number of entries left */
 138         void *mapped_sg;                /* vaddr of mapped sg */
 139         unsigned int remain;    /* Data left in curren entry */
 140         int size;                               /* Total size of transfer */
 141
 142         struct tasklet_struct card_change_tasklet;
 143         struct tasklet_struct fifo_run_tasklet;
 144 };
 145
 146 #define MSD_FIFO_LENW   4       /* 4 words, total 4 * 4 = 16 bytes */
 147 #define MSD_FIFO_LENB   16      /* 16 bytes */
 148
 149 #endif  /* _MOXART_H */