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/*

 *  linux/drivers/mmc/host/sdhci.h - Secure Digital Host Controller Interface driver

 *

 *  Copyright (C) 2005-2007 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.

 */

/*

 * PCI registers

 */

#define PCI_SDHCI_IFPIO                 0x00

#define PCI_SDHCI_IFDMA                 0x01

#define PCI_SDHCI_IFVENDOR              0x02

#define PCI_SLOT_INFO                   0x40    /* 8 bits */

#define  PCI_SLOT_INFO_SLOTS(x)         ((x >> 4) & 7)

#define  PCI_SLOT_INFO_FIRST_BAR_MASK   0x07

/*

 * Controller registers

 */

#define SDHCI_DMA_ADDRESS       0x00

#define SDHCI_BLOCK_SIZE        0x04

#define  SDHCI_MAKE_BLKSZ(dma, blksz) (((dma & 0x7) << 12) | (blksz & 0xFFF))

#define SDHCI_BLOCK_COUNT       0x06

#define SDHCI_ARGUMENT          0x08

#define SDHCI_TRANSFER_MODE     0x0C

#define  SDHCI_TRNS_DMA         0x01

#define  SDHCI_TRNS_BLK_CNT_EN  0x02

#define  SDHCI_TRNS_ACMD12      0x04

#define  SDHCI_TRNS_READ        0x10

#define  SDHCI_TRNS_MULTI       0x20

#define SDHCI_COMMAND           0x0E

#define  SDHCI_CMD_RESP_MASK    0x03

#define  SDHCI_CMD_CRC          0x08

#define  SDHCI_CMD_INDEX        0x10

#define  SDHCI_CMD_DATA         0x20

#define  SDHCI_CMD_RESP_NONE    0x00

#define  SDHCI_CMD_RESP_LONG    0x01

#define  SDHCI_CMD_RESP_SHORT   0x02

#define  SDHCI_CMD_RESP_SHORT_BUSY 0x03

#define SDHCI_MAKE_CMD(c, f) (((c & 0xff) << 8) | (f & 0xff))

#define SDHCI_RESPONSE          0x10

#define SDHCI_BUFFER            0x20

#define SDHCI_PRESENT_STATE     0x24

#define  SDHCI_CMD_INHIBIT      0x00000001

#define  SDHCI_DATA_INHIBIT     0x00000002

#define  SDHCI_DOING_WRITE      0x00000100

#define  SDHCI_DOING_READ       0x00000200

#define  SDHCI_SPACE_AVAILABLE  0x00000400

#define  SDHCI_DATA_AVAILABLE   0x00000800

#define  SDHCI_CARD_PRESENT     0x00010000

#define  SDHCI_WRITE_PROTECT    0x00080000

#define SDHCI_HOST_CONTROL      0x28

#define  SDHCI_CTRL_LED         0x01

#define  SDHCI_CTRL_4BITBUS     0x02

#define  SDHCI_CTRL_HISPD       0x04

#define SDHCI_POWER_CONTROL     0x29

#define  SDHCI_POWER_ON         0x01

#define  SDHCI_POWER_180        0x0A

#define  SDHCI_POWER_300        0x0C

#define  SDHCI_POWER_330        0x0E

#define SDHCI_BLOCK_GAP_CONTROL 0x2A

#define SDHCI_WAKE_UP_CONTROL   0x2B

#define SDHCI_CLOCK_CONTROL     0x2C

#define  SDHCI_DIVIDER_SHIFT    8

#define  SDHCI_CLOCK_CARD_EN    0x0004

#define  SDHCI_CLOCK_INT_STABLE 0x0002

#define  SDHCI_CLOCK_INT_EN     0x0001

#define SDHCI_TIMEOUT_CONTROL   0x2E

#define SDHCI_SOFTWARE_RESET    0x2F

#define  SDHCI_RESET_ALL        0x01

#define  SDHCI_RESET_CMD        0x02

#define  SDHCI_RESET_DATA       0x04

#define SDHCI_INT_STATUS        0x30

#define SDHCI_INT_ENABLE        0x34

#define SDHCI_SIGNAL_ENABLE     0x38

#define  SDHCI_INT_RESPONSE     0x00000001

#define  SDHCI_INT_DATA_END     0x00000002

#define  SDHCI_INT_DMA_END      0x00000008

#define  SDHCI_INT_SPACE_AVAIL  0x00000010

#define  SDHCI_INT_DATA_AVAIL   0x00000020

#define  SDHCI_INT_CARD_INSERT  0x00000040

#define  SDHCI_INT_CARD_REMOVE  0x00000080

#define  SDHCI_INT_CARD_INT     0x00000100

#define  SDHCI_INT_ERROR        0x00008000

#define  SDHCI_INT_TIMEOUT      0x00010000

#define  SDHCI_INT_CRC          0x00020000

#define  SDHCI_INT_END_BIT      0x00040000

#define  SDHCI_INT_INDEX        0x00080000

#define  SDHCI_INT_DATA_TIMEOUT 0x00100000

#define  SDHCI_INT_DATA_CRC     0x00200000

#define  SDHCI_INT_DATA_END_BIT 0x00400000

#define  SDHCI_INT_BUS_POWER    0x00800000

#define  SDHCI_INT_ACMD12ERR    0x01000000

#define  SDHCI_INT_NORMAL_MASK  0x00007FFF

#define  SDHCI_INT_ERROR_MASK   0xFFFF8000

#define  SDHCI_INT_CMD_MASK     (SDHCI_INT_RESPONSE | SDHCI_INT_TIMEOUT | \

                SDHCI_INT_CRC | SDHCI_INT_END_BIT | SDHCI_INT_INDEX)

#define  SDHCI_INT_DATA_MASK    (SDHCI_INT_DATA_END | SDHCI_INT_DMA_END | \

                SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | \

                SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_DATA_CRC | \

                SDHCI_INT_DATA_END_BIT)

#define SDHCI_ACMD12_ERR        0x3C

/* 3E-3F reserved */

#define SDHCI_CAPABILITIES      0x40

#define  SDHCI_TIMEOUT_CLK_MASK 0x0000003F

#define  SDHCI_TIMEOUT_CLK_SHIFT 0

#define  SDHCI_TIMEOUT_CLK_UNIT 0x00000080

#define  SDHCI_CLOCK_BASE_MASK  0x00003F00

#define  SDHCI_CLOCK_BASE_SHIFT 8

#define  SDHCI_MAX_BLOCK_MASK   0x00030000

#define  SDHCI_MAX_BLOCK_SHIFT  16

#define  SDHCI_CAN_DO_HISPD     0x00200000

#define  SDHCI_CAN_DO_DMA       0x00400000

#define  SDHCI_CAN_VDD_330      0x01000000

#define  SDHCI_CAN_VDD_300      0x02000000

#define  SDHCI_CAN_VDD_180      0x04000000

/* 44-47 reserved for more caps */

#define SDHCI_MAX_CURRENT       0x48

/* 4C-4F reserved for more max current */

/* 50-FB reserved */

#define SDHCI_SLOT_INT_STATUS   0xFC

#define SDHCI_HOST_VERSION      0xFE

#define  SDHCI_VENDOR_VER_MASK  0xFF00

#define  SDHCI_VENDOR_VER_SHIFT 8

#define  SDHCI_SPEC_VER_MASK    0x00FF

#define  SDHCI_SPEC_VER_SHIFT   0

struct sdhci_chip;

struct sdhci_host {

        struct sdhci_chip       *chip;

        struct mmc_host         *mmc;           /* MMC structure */

        spinlock_t              lock;           /* Mutex */

        int                     flags;          /* Host attributes */

#define SDHCI_USE_DMA           (1<<0)          /* Host is DMA capable */

#define SDHCI_REQ_USE_DMA       (1<<1)          /* Use DMA for this req. */

        unsigned int            max_clk;        /* Max possible freq (MHz) */

        unsigned int            timeout_clk;    /* Timeout freq (KHz) */

        unsigned int            clock;          /* Current clock (MHz) */

        unsigned short          power;          /* Current voltage */

        struct mmc_request      *mrq;           /* Current request */

        struct mmc_command      *cmd;           /* Current command */

        struct mmc_data         *data;          /* Current data request */

        int                     data_early:1;   /* Data finished before cmd */

        struct scatterlist      *cur_sg;        /* We're working on this */

        int                     num_sg;         /* Entries left */

        int                     offset;         /* Offset into current sg */

        int                     remain;         /* Bytes left in current */

        char                    slot_descr[20]; /* Name for reservations */

        int                     irq;            /* Device IRQ */

        int                     bar;            /* PCI BAR index */

        unsigned long           addr;           /* Bus address */

        void __iomem *          ioaddr;         /* Mapped address */

        struct tasklet_struct   card_tasklet;   /* Tasklet structures */

        struct tasklet_struct   finish_tasklet;

        struct timer_list       timer;          /* Timer for timeouts */

};

struct sdhci_chip {

        struct pci_dev          *pdev;

        unsigned long           quirks;

        int                     num_slots;      /* Slots on controller */

        struct sdhci_host       *hosts[0];       /* Pointers to hosts */

};