drivers/mmc/host/toshsd.h

root/drivers/mmc/host/toshsd.h
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 *  Toshiba PCI Secure Digital Host Controller Interface driver
 *
 *  Copyright (C) 2014 Ondrej Zary
 *  Copyright (C) 2007 Richard Betts, All Rights Reserved.
 *
 *      Based on asic3_mmc.c Copyright (c) 2005 SDG Systems, LLC
 */

#define HCLK    33000000        /* 33 MHz (PCI clock) */

#define SD_PCICFG_CLKSTOP       0x40    /* 0x1f = clock controller, 0 = stop */
#define SD_PCICFG_GATEDCLK      0x41    /* Gated clock */
#define SD_PCICFG_CLKMODE       0x42    /* Control clock of SD controller */
#define SD_PCICFG_PINSTATUS     0x44    /* R/O: read status of SD pins */
#define SD_PCICFG_POWER1        0x48
#define SD_PCICFG_POWER2        0x49
#define SD_PCICFG_POWER3        0x4a
#define SD_PCICFG_CARDDETECT    0x4c
#define SD_PCICFG_SLOTS         0x50    /* R/O: define support slot number */
#define SD_PCICFG_EXTGATECLK1   0xf0    /* Could be used for gated clock */
#define SD_PCICFG_EXTGATECLK2   0xf1    /* Could be used for gated clock */
#define SD_PCICFG_EXTGATECLK3   0xf9    /* Bit 1: double buffer/single buffer */
#define SD_PCICFG_SDLED_ENABLE1 0xfa
#define SD_PCICFG_SDLED_ENABLE2 0xfe

#define SD_PCICFG_CLKMODE_DIV_DISABLE   BIT(0)
#define SD_PCICFG_CLKSTOP_ENABLE_ALL    0x1f
#define SD_PCICFG_LED_ENABLE1_START     0x12
#define SD_PCICFG_LED_ENABLE2_START     0x80

#define SD_PCICFG_PWR1_33V      0x08    /* Set for 3.3 volts */
#define SD_PCICFG_PWR1_OFF      0x00    /* Turn off power */
#define SD_PCICFG_PWR2_AUTO     0x02

#define SD_CMD                  0x00    /* also for SDIO */
#define SD_ARG0                 0x04    /* also for SDIO */
#define SD_ARG1                 0x06    /* also for SDIO */
#define SD_STOPINTERNAL         0x08
#define SD_BLOCKCOUNT           0x0a    /* also for SDIO */
#define SD_RESPONSE0            0x0c    /* also for SDIO */
#define SD_RESPONSE1            0x0e    /* also for SDIO */
#define SD_RESPONSE2            0x10    /* also for SDIO */
#define SD_RESPONSE3            0x12    /* also for SDIO */
#define SD_RESPONSE4            0x14    /* also for SDIO */
#define SD_RESPONSE5            0x16    /* also for SDIO */
#define SD_RESPONSE6            0x18    /* also for SDIO */
#define SD_RESPONSE7            0x1a    /* also for SDIO */
#define SD_CARDSTATUS           0x1c    /* also for SDIO */
#define SD_BUFFERCTRL           0x1e    /* also for SDIO */
#define SD_INTMASKCARD          0x20    /* also for SDIO */
#define SD_INTMASKBUFFER        0x22    /* also for SDIO */
#define SD_CARDCLOCKCTRL        0x24
#define SD_CARDXFERDATALEN      0x26    /* also for SDIO */
#define SD_CARDOPTIONSETUP      0x28    /* also for SDIO */
#define SD_ERRORSTATUS0         0x2c    /* also for SDIO */
#define SD_ERRORSTATUS1         0x2e    /* also for SDIO */
#define SD_DATAPORT             0x30    /* also for SDIO */
#define SD_TRANSACTIONCTRL      0x34    /* also for SDIO */
#define SD_SOFTWARERESET        0xe0    /* also for SDIO */

/* registers above marked "also for SDIO" and all SDIO registers below can be
 * accessed at SDIO_BASE + reg address */
#define SDIO_BASE        0x100

#define SDIO_CARDPORTSEL        0x02
#define SDIO_CARDINTCTRL        0x36
#define SDIO_CLOCKNWAITCTRL     0x38
#define SDIO_HOSTINFORMATION    0x3a
#define SDIO_ERRORCTRL          0x3c
#define SDIO_LEDCTRL            0x3e

#define SD_TRANSCTL_SET         BIT(8)

#define SD_CARDCLK_DIV_DISABLE  BIT(15)
#define SD_CARDCLK_ENABLE_CLOCK BIT(8)
#define SD_CARDCLK_CLK_DIV_512  BIT(7)
#define SD_CARDCLK_CLK_DIV_256  BIT(6)
#define SD_CARDCLK_CLK_DIV_128  BIT(5)
#define SD_CARDCLK_CLK_DIV_64   BIT(4)
#define SD_CARDCLK_CLK_DIV_32   BIT(3)
#define SD_CARDCLK_CLK_DIV_16   BIT(2)
#define SD_CARDCLK_CLK_DIV_8    BIT(1)
#define SD_CARDCLK_CLK_DIV_4    BIT(0)
#define SD_CARDCLK_CLK_DIV_2    0

#define SD_CARDOPT_REQUIRED             0x000e
#define SD_CARDOPT_DATA_RESP_TIMEOUT(x) (((x) & 0x0f) << 4) /* 4 bits */
#define SD_CARDOPT_C2_MODULE_ABSENT     BIT(14)
#define SD_CARDOPT_DATA_XFR_WIDTH_1     (1 << 15)
#define SD_CARDOPT_DATA_XFR_WIDTH_4     (0 << 15)

#define SD_CMD_TYPE_CMD                 (0 << 6)
#define SD_CMD_TYPE_ACMD                (1 << 6)
#define SD_CMD_TYPE_AUTHEN              (2 << 6)
#define SD_CMD_RESP_TYPE_NONE           (3 << 8)
#define SD_CMD_RESP_TYPE_EXT_R1         (4 << 8)
#define SD_CMD_RESP_TYPE_EXT_R1B        (5 << 8)
#define SD_CMD_RESP_TYPE_EXT_R2         (6 << 8)
#define SD_CMD_RESP_TYPE_EXT_R3         (7 << 8)
#define SD_CMD_RESP_TYPE_EXT_R6         (4 << 8)
#define SD_CMD_RESP_TYPE_EXT_R7         (4 << 8)
#define SD_CMD_DATA_PRESENT             BIT(11)
#define SD_CMD_TRANSFER_READ            BIT(12)
#define SD_CMD_MULTI_BLOCK              BIT(13)
#define SD_CMD_SECURITY_CMD             BIT(14)

#define SD_STOPINT_ISSUE_CMD12          BIT(0)
#define SD_STOPINT_AUTO_ISSUE_CMD12     BIT(8)

#define SD_CARD_RESP_END        BIT(0)
#define SD_CARD_RW_END          BIT(2)
#define SD_CARD_CARD_REMOVED_0  BIT(3)
#define SD_CARD_CARD_INSERTED_0 BIT(4)
#define SD_CARD_PRESENT_0       BIT(5)
#define SD_CARD_UNK6            BIT(6)
#define SD_CARD_WRITE_PROTECT   BIT(7)
#define SD_CARD_CARD_REMOVED_3  BIT(8)
#define SD_CARD_CARD_INSERTED_3 BIT(9)
#define SD_CARD_PRESENT_3       BIT(10)

#define SD_BUF_CMD_INDEX_ERR    BIT(16)
#define SD_BUF_CRC_ERR          BIT(17)
#define SD_BUF_STOP_BIT_END_ERR BIT(18)
#define SD_BUF_DATA_TIMEOUT     BIT(19)
#define SD_BUF_OVERFLOW         BIT(20)
#define SD_BUF_UNDERFLOW        BIT(21)
#define SD_BUF_CMD_TIMEOUT      BIT(22)
#define SD_BUF_UNK7             BIT(23)
#define SD_BUF_READ_ENABLE      BIT(24)
#define SD_BUF_WRITE_ENABLE     BIT(25)
#define SD_BUF_ILLEGAL_FUNCTION BIT(29)
#define SD_BUF_CMD_BUSY         BIT(30)
#define SD_BUF_ILLEGAL_ACCESS   BIT(31)

#define SD_ERR0_RESP_CMD_ERR                    BIT(0)
#define SD_ERR0_RESP_NON_CMD12_END_BIT_ERR      BIT(2)
#define SD_ERR0_RESP_CMD12_END_BIT_ERR          BIT(3)
#define SD_ERR0_READ_DATA_END_BIT_ERR           BIT(4)
#define SD_ERR0_WRITE_CRC_STATUS_END_BIT_ERR    BIT(5)
#define SD_ERR0_RESP_NON_CMD12_CRC_ERR          BIT(8)
#define SD_ERR0_RESP_CMD12_CRC_ERR              BIT(9)
#define SD_ERR0_READ_DATA_CRC_ERR               BIT(10)
#define SD_ERR0_WRITE_CMD_CRC_ERR               BIT(11)

#define SD_ERR1_NO_CMD_RESP             BIT(16)
#define SD_ERR1_TIMEOUT_READ_DATA       BIT(20)
#define SD_ERR1_TIMEOUT_CRS_STATUS      BIT(21)
#define SD_ERR1_TIMEOUT_CRC_BUSY        BIT(22)

#define IRQ_DONT_CARE_BITS (SD_CARD_PRESENT_3 \
        | SD_CARD_WRITE_PROTECT \
        | SD_CARD_UNK6 \
        | SD_CARD_PRESENT_0 \
        | SD_BUF_UNK7 \
        | SD_BUF_CMD_BUSY)

struct toshsd_host {
        struct pci_dev *pdev;
        struct mmc_host *mmc;

        spinlock_t lock;

        struct mmc_request *mrq;/* Current request */
        struct mmc_command *cmd;/* Current command */
        struct mmc_data *data;  /* Current data request */

        struct sg_mapping_iter sg_miter; /* for PIO */

        void __iomem *ioaddr; /* mapped address */
};
Linux
