wbsd.h

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/*
 *  linux/drivers/mmc/host/wbsd.h - Winbond W83L51xD SD/MMC driver
 *
 *  Copyright (C) 2004-2007 Pierre Ossman, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 */

#define LOCK_CODE       0xAA

#define WBSD_CONF_SWRST     0x02
#define WBSD_CONF_DEVICE    0x07
#define WBSD_CONF_ID_HI     0x20
#define WBSD_CONF_ID_LO     0x21
#define WBSD_CONF_POWER     0x22
#define WBSD_CONF_PME       0x23
#define WBSD_CONF_PMES      0x24

#define WBSD_CONF_ENABLE    0x30
#define WBSD_CONF_PORT_HI   0x60
#define WBSD_CONF_PORT_LO   0x61
#define WBSD_CONF_IRQ       0x70
#define WBSD_CONF_DRQ       0x74

#define WBSD_CONF_PINS      0xF0

#define DEVICE_SD       0x03

#define WBSD_PINS_DAT3_HI   0x20
#define WBSD_PINS_DAT3_OUT  0x10
#define WBSD_PINS_GP11_HI   0x04
#define WBSD_PINS_DETECT_GP11   0x02
#define WBSD_PINS_DETECT_DAT3   0x01

#define WBSD_CMDR       0x00
#define WBSD_DFR        0x01
#define WBSD_EIR        0x02
#define WBSD_ISR        0x03
#define WBSD_FSR        0x04
#define WBSD_IDXR       0x05
#define WBSD_DATAR      0x06
#define WBSD_CSR        0x07

#define WBSD_EINT_CARD      0x40
#define WBSD_EINT_FIFO_THRE 0x20
#define WBSD_EINT_CRC       0x10
#define WBSD_EINT_TIMEOUT   0x08
#define WBSD_EINT_PROGEND   0x04
#define WBSD_EINT_BUSYEND   0x02
#define WBSD_EINT_TC        0x01

#define WBSD_INT_PENDING    0x80
#define WBSD_INT_CARD       0x40
#define WBSD_INT_FIFO_THRE  0x20
#define WBSD_INT_CRC        0x10
#define WBSD_INT_TIMEOUT    0x08
#define WBSD_INT_PROGEND    0x04
#define WBSD_INT_BUSYEND    0x02
#define WBSD_INT_TC     0x01

#define WBSD_FIFO_EMPTY     0x80
#define WBSD_FIFO_FULL      0x40
#define WBSD_FIFO_EMTHRE    0x20
#define WBSD_FIFO_FUTHRE    0x10
#define WBSD_FIFO_SZMASK    0x0F

#define WBSD_MSLED      0x20
#define WBSD_POWER_N        0x10
#define WBSD_WRPT       0x04
#define WBSD_CARDPRESENT    0x01

#define WBSD_IDX_CLK        0x01
#define WBSD_IDX_PBSMSB     0x02
#define WBSD_IDX_TAAC       0x03
#define WBSD_IDX_NSAC       0x04
#define WBSD_IDX_PBSLSB     0x05
#define WBSD_IDX_SETUP      0x06
#define WBSD_IDX_DMA        0x07
#define WBSD_IDX_FIFOEN     0x08
#define WBSD_IDX_STATUS     0x10
#define WBSD_IDX_RSPLEN     0x1E
#define WBSD_IDX_RESP0      0x1F
#define WBSD_IDX_RESP1      0x20
#define WBSD_IDX_RESP2      0x21
#define WBSD_IDX_RESP3      0x22
#define WBSD_IDX_RESP4      0x23
#define WBSD_IDX_RESP5      0x24
#define WBSD_IDX_RESP6      0x25
#define WBSD_IDX_RESP7      0x26
#define WBSD_IDX_RESP8      0x27
#define WBSD_IDX_RESP9      0x28
#define WBSD_IDX_RESP10     0x29
#define WBSD_IDX_RESP11     0x2A
#define WBSD_IDX_RESP12     0x2B
#define WBSD_IDX_RESP13     0x2C
#define WBSD_IDX_RESP14     0x2D
#define WBSD_IDX_RESP15     0x2E
#define WBSD_IDX_RESP16     0x2F
#define WBSD_IDX_CRCSTATUS  0x30
#define WBSD_IDX_ISR        0x3F

#define WBSD_CLK_375K       0x00
#define WBSD_CLK_12M        0x01
#define WBSD_CLK_16M        0x02
#define WBSD_CLK_24M        0x03

#define WBSD_DATA_WIDTH     0x01

#define WBSD_DAT3_H     0x08
#define WBSD_FIFO_RESET     0x04
#define WBSD_SOFT_RESET     0x02
#define WBSD_INC_INDEX      0x01

#define WBSD_DMA_SINGLE     0x02
#define WBSD_DMA_ENABLE     0x01

#define WBSD_FIFOEN_EMPTY   0x20
#define WBSD_FIFOEN_FULL    0x10
#define WBSD_FIFO_THREMASK  0x0F

#define WBSD_BLOCK_READ     0x80
#define WBSD_BLOCK_WRITE    0x40
#define WBSD_BUSY       0x20
#define WBSD_CARDTRAFFIC    0x04
#define WBSD_SENDCMD        0x02
#define WBSD_RECVRES        0x01

#define WBSD_RSP_SHORT      0x00
#define WBSD_RSP_LONG       0x01

#define WBSD_CRC_MASK       0x1F
#define WBSD_CRC_OK     0x05 /* S010E (00101) */
#define WBSD_CRC_FAIL       0x0B /* S101E (01011) */

#define WBSD_DMA_SIZE       65536

struct wbsd_host
{
    struct mmc_host*    mmc;        /* MMC structure */

    spinlock_t      lock;       /* Mutex */

    int         flags;      /* Driver states */

#define WBSD_FCARD_PRESENT  (1<<0)      /* Card is present */
#define WBSD_FIGNORE_DETECT (1<<1)      /* Ignore card detection */

    struct mmc_request* mrq;        /* Current request */

    u8          isr;        /* Accumulated ISR */

    struct scatterlist* cur_sg;     /* Current SG entry */
    unsigned int        num_sg;     /* Number of entries left */

    unsigned int        offset;     /* Offset into current entry */
    unsigned int        remain;     /* Data left in curren entry */

    char*           dma_buffer; /* ISA DMA buffer */
    dma_addr_t      dma_addr;   /* Physical address for same */

    int         firsterr;   /* See fifo functions */

    u8          clk;        /* Current clock speed */
    unsigned char       bus_width;  /* Current bus width */

    int         config;     /* Config port */
    u8          unlock_code;    /* Code to unlock config */

    int         chip_id;    /* ID of controller */

    int         base;       /* I/O port base */
    int         irq;        /* Interrupt */
    int         dma;        /* DMA channel */

    struct tasklet_struct   card_tasklet;   /* Tasklet structures */
    struct tasklet_struct   fifo_tasklet;
    struct tasklet_struct   crc_tasklet;
    struct tasklet_struct   timeout_tasklet;
    struct tasklet_struct   finish_tasklet;

    struct timer_list   ignore_timer;   /* Ignore detection timer */
};