/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *  linux/drivers/mmc/host/wbsd.h - Winbond W83L51xD SD/MMC driver
 *
 *  Copyright (C) 2004-2007 Pierre Ossman, All Rights Reserved.
 */

#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 work_struct      card_bh_work;   /* Work structures */
        struct work_struct      fifo_bh_work;
        struct work_struct      crc_bh_work;
        struct work_struct      timeout_bh_work;
        struct work_struct      finish_bh_work;

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