drivers/mmc/host/msm_sdcc.h

   1 /*
   2  *  linux/drivers/mmc/host/msmsdcc.h - QCT MSM7K SDC Controller
   3  *
   4  *  Copyright (C) 2008 Google, All Rights Reserved.
   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 version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * - Based on mmci.h
  11  */
  12
  13 #ifndef _MSM_SDCC_H
  14 #define _MSM_SDCC_H
  15
  16 #define MSMSDCC_CRCI_SDC1       6
  17 #define MSMSDCC_CRCI_SDC2       7
  18 #define MSMSDCC_CRCI_SDC3       12
  19 #define MSMSDCC_CRCI_SDC4       13
  20
  21 #define MMCIPOWER               0x000
  22 #define MCI_PWR_OFF             0x00
  23 #define MCI_PWR_UP              0x02
  24 #define MCI_PWR_ON              0x03
  25 #define MCI_OD                  (1 << 6)
  26
  27 #define MMCICLOCK               0x004
  28 #define MCI_CLK_ENABLE          (1 << 8)
  29 #define MCI_CLK_PWRSAVE         (1 << 9)
  30 #define MCI_CLK_WIDEBUS         (1 << 10)
  31 #define MCI_CLK_FLOWENA         (1 << 12)
  32 #define MCI_CLK_INVERTOUT       (1 << 13)
  33 #define MCI_CLK_SELECTIN        (1 << 14)
  34
  35 #define MMCIARGUMENT            0x008
  36 #define MMCICOMMAND             0x00c
  37 #define MCI_CPSM_RESPONSE       (1 << 6)
  38 #define MCI_CPSM_LONGRSP        (1 << 7)
  39 #define MCI_CPSM_INTERRUPT      (1 << 8)
  40 #define MCI_CPSM_PENDING        (1 << 9)
  41 #define MCI_CPSM_ENABLE         (1 << 10)
  42 #define MCI_CPSM_PROGENA        (1 << 11)
  43 #define MCI_CSPM_DATCMD         (1 << 12)
  44 #define MCI_CSPM_MCIABORT       (1 << 13)
  45 #define MCI_CSPM_CCSENABLE      (1 << 14)
  46 #define MCI_CSPM_CCSDISABLE     (1 << 15)
  47
  48
  49 #define MMCIRESPCMD             0x010
  50 #define MMCIRESPONSE0           0x014
  51 #define MMCIRESPONSE1           0x018
  52 #define MMCIRESPONSE2           0x01c
  53 #define MMCIRESPONSE3           0x020
  54 #define MMCIDATATIMER           0x024
  55 #define MMCIDATALENGTH          0x028
  56
  57 #define MMCIDATACTRL            0x02c
  58 #define MCI_DPSM_ENABLE         (1 << 0)
  59 #define MCI_DPSM_DIRECTION      (1 << 1)
  60 #define MCI_DPSM_MODE           (1 << 2)
  61 #define MCI_DPSM_DMAENABLE      (1 << 3)
  62
  63 #define MMCIDATACNT             0x030
  64 #define MMCISTATUS              0x034
  65 #define MCI_CMDCRCFAIL          (1 << 0)
  66 #define MCI_DATACRCFAIL         (1 << 1)
  67 #define MCI_CMDTIMEOUT          (1 << 2)
  68 #define MCI_DATATIMEOUT         (1 << 3)
  69 #define MCI_TXUNDERRUN          (1 << 4)
  70 #define MCI_RXOVERRUN           (1 << 5)
  71 #define MCI_CMDRESPEND          (1 << 6)
  72 #define MCI_CMDSENT             (1 << 7)
  73 #define MCI_DATAEND             (1 << 8)
  74 #define MCI_DATABLOCKEND        (1 << 10)
  75 #define MCI_CMDACTIVE           (1 << 11)
  76 #define MCI_TXACTIVE            (1 << 12)
  77 #define MCI_RXACTIVE            (1 << 13)
  78 #define MCI_TXFIFOHALFEMPTY     (1 << 14)
  79 #define MCI_RXFIFOHALFFULL      (1 << 15)
  80 #define MCI_TXFIFOFULL          (1 << 16)
  81 #define MCI_RXFIFOFULL          (1 << 17)
  82 #define MCI_TXFIFOEMPTY         (1 << 18)
  83 #define MCI_RXFIFOEMPTY         (1 << 19)
  84 #define MCI_TXDATAAVLBL         (1 << 20)
  85 #define MCI_RXDATAAVLBL         (1 << 21)
  86 #define MCI_SDIOINTR            (1 << 22)
  87 #define MCI_PROGDONE            (1 << 23)
  88 #define MCI_ATACMDCOMPL         (1 << 24)
  89 #define MCI_SDIOINTOPER         (1 << 25)
  90 #define MCI_CCSTIMEOUT          (1 << 26)
  91
  92 #define MMCICLEAR               0x038
  93 #define MCI_CMDCRCFAILCLR       (1 << 0)
  94 #define MCI_DATACRCFAILCLR      (1 << 1)
  95 #define MCI_CMDTIMEOUTCLR       (1 << 2)
  96 #define MCI_DATATIMEOUTCLR      (1 << 3)
  97 #define MCI_TXUNDERRUNCLR       (1 << 4)
  98 #define MCI_RXOVERRUNCLR        (1 << 5)
  99 #define MCI_CMDRESPENDCLR       (1 << 6)
 100 #define MCI_CMDSENTCLR          (1 << 7)
 101 #define MCI_DATAENDCLR          (1 << 8)
 102 #define MCI_DATABLOCKENDCLR     (1 << 10)
 103
 104 #define MMCIMASK0               0x03c
 105 #define MCI_CMDCRCFAILMASK      (1 << 0)
 106 #define MCI_DATACRCFAILMASK     (1 << 1)
 107 #define MCI_CMDTIMEOUTMASK      (1 << 2)
 108 #define MCI_DATATIMEOUTMASK     (1 << 3)
 109 #define MCI_TXUNDERRUNMASK      (1 << 4)
 110 #define MCI_RXOVERRUNMASK       (1 << 5)
 111 #define MCI_CMDRESPENDMASK      (1 << 6)
 112 #define MCI_CMDSENTMASK         (1 << 7)
 113 #define MCI_DATAENDMASK         (1 << 8)
 114 #define MCI_DATABLOCKENDMASK    (1 << 10)
 115 #define MCI_CMDACTIVEMASK       (1 << 11)
 116 #define MCI_TXACTIVEMASK        (1 << 12)
 117 #define MCI_RXACTIVEMASK        (1 << 13)
 118 #define MCI_TXFIFOHALFEMPTYMASK (1 << 14)
 119 #define MCI_RXFIFOHALFFULLMASK  (1 << 15)
 120 #define MCI_TXFIFOFULLMASK      (1 << 16)
 121 #define MCI_RXFIFOFULLMASK      (1 << 17)
 122 #define MCI_TXFIFOEMPTYMASK     (1 << 18)
 123 #define MCI_RXFIFOEMPTYMASK     (1 << 19)
 124 #define MCI_TXDATAAVLBLMASK     (1 << 20)
 125 #define MCI_RXDATAAVLBLMASK     (1 << 21)
 126 #define MCI_SDIOINTMASK         (1 << 22)
 127 #define MCI_PROGDONEMASK        (1 << 23)
 128 #define MCI_ATACMDCOMPLMASK     (1 << 24)
 129 #define MCI_SDIOINTOPERMASK     (1 << 25)
 130 #define MCI_CCSTIMEOUTMASK      (1 << 26)
 131
 132 #define MMCIMASK1               0x040
 133 #define MMCIFIFOCNT             0x044
 134 #define MCICCSTIMER             0x058
 135
 136 #define MMCIFIFO                0x080 /* to 0x0bc */
 137
 138 #define MCI_IRQENABLE   \
 139         (MCI_CMDCRCFAILMASK|MCI_DATACRCFAILMASK|MCI_CMDTIMEOUTMASK|     \
 140         MCI_DATATIMEOUTMASK|MCI_TXUNDERRUNMASK|MCI_RXOVERRUNMASK|       \
 141         MCI_CMDRESPENDMASK|MCI_CMDSENTMASK|MCI_DATAENDMASK)
 142
 143 /*
 144  * The size of the FIFO in bytes.
 145  */
 146 #define MCI_FIFOSIZE    (16*4)
 147
 148 #define MCI_FIFOHALFSIZE (MCI_FIFOSIZE / 2)
 149
 150 #define NR_SG           32
 151
 152 struct clk;
 153
 154 struct msmsdcc_nc_dmadata {
 155         dmov_box        cmd[NR_SG];
 156         uint32_t        cmdptr;
 157 };
 158
 159 struct msmsdcc_dma_data {
 160         struct msmsdcc_nc_dmadata       *nc;
 161         dma_addr_t                      nc_busaddr;
 162         dma_addr_t                      cmd_busaddr;
 163         dma_addr_t                      cmdptr_busaddr;
 164
 165         struct msm_dmov_cmd             hdr;
 166         enum dma_data_direction         dir;
 167
 168         struct scatterlist              *sg;
 169         int                             num_ents;
 170
 171         int                             channel;
 172         struct msmsdcc_host             *host;
 173         int                             busy; /* Set if DM is busy */
 174 };
 175
 176 struct msmsdcc_pio_data {
 177         struct scatterlist      *sg;
 178         unsigned int            sg_len;
 179         unsigned int            sg_off;
 180 };
 181
 182 struct msmsdcc_curr_req {
 183         struct mmc_request      *mrq;
 184         struct mmc_command      *cmd;
 185         struct mmc_data         *data;
 186         unsigned int            xfer_size;      /* Total data size */
 187         unsigned int            xfer_remain;    /* Bytes remaining to send */
 188         unsigned int            data_xfered;    /* Bytes acked by BLKEND irq */
 189         int                     got_dataend;
 190         int                     got_datablkend;
 191         int                     user_pages;
 192 };
 193
 194 struct msmsdcc_stats {
 195         unsigned int reqs;
 196         unsigned int cmds;
 197         unsigned int cmdpoll_hits;
 198         unsigned int cmdpoll_misses;
 199 };
 200
 201 struct msmsdcc_host {
 202         struct resource         *cmd_irqres;
 203         struct resource         *pio_irqres;
 204         struct resource         *memres;
 205         struct resource         *dmares;
 206         void __iomem            *base;
 207         int                     pdev_id;
 208         unsigned int            stat_irq;
 209
 210         struct msmsdcc_curr_req curr;
 211
 212         struct mmc_host         *mmc;
 213         struct clk              *clk;           /* main MMC bus clock */
 214         struct clk              *pclk;          /* SDCC peripheral bus clock */
 215         unsigned int            clks_on;        /* set if clocks are enabled */
 216         struct timer_list       command_timer;
 217
 218         unsigned int            eject;          /* eject state */
 219
 220         spinlock_t              lock;
 221
 222         unsigned int            clk_rate;       /* Current clock rate */
 223         unsigned int            pclk_rate;
 224
 225         u32                     pwr;
 226         u32                     saved_irq0mask; /* MMCIMASK0 reg value */
 227         struct mmc_platform_data *plat;
 228
 229         struct timer_list       timer;
 230         unsigned int            oldstat;
 231
 232         struct msmsdcc_dma_data dma;
 233         struct msmsdcc_pio_data pio;
 234         int                     cmdpoll;
 235         struct msmsdcc_stats    stats;
 236 };
 237
 238 #endif