sd.h

xen虚拟机源代码安装包

/*
 * SD Memory Card emulation.  Mostly correct for MMC too.
 *
 * Copyright (c) 2006 Andrzej Zaborowski  <[e-mail]>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
 * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef __hw_sd_h
#define __hw_sd_h		1

#define OUT_OF_RANGE		(1 << 31)
#define ADDRESS_ERROR		(1 << 30)
#define BLOCK_LEN_ERROR		(1 << 29)
#define ERASE_SEQ_ERROR		(1 << 28)
#define ERASE_PARAM		(1 << 27)
#define WP_VIOLATION		(1 << 26)
#define CARD_IS_LOCKED		(1 << 25)
#define LOCK_UNLOCK_FAILED	(1 << 24)
#define COM_CRC_ERROR		(1 << 23)
#define ILLEGAL_COMMAND		(1 << 22)
#define CARD_ECC_FAILED		(1 << 21)
#define CC_ERROR		(1 << 20)
#define SD_ERROR		(1 << 19)
#define CID_CSD_OVERWRITE	(1 << 16)
#define WP_ERASE_SKIP		(1 << 15)
#define CARD_ECC_DISABLED	(1 << 14)
#define ERASE_RESET		(1 << 13)
#define CURRENT_STATE		(7 << 9)
#define READY_FOR_DATA		(1 << 8)
#define APP_CMD			(1 << 5)
#define AKE_SEQ_ERROR		(1 << 3)

typedef enum {
    sd_none = -1,
    sd_bc = 0,	/* broadcast -- no response */
    sd_bcr,	/* broadcast with response */
    sd_ac,	/* addressed -- no data transfer */
    sd_adtc,	/* addressed with data transfer */
} sd_cmd_type_t;

struct sd_request_s {
    uint8_t cmd;
    uint32_t arg;
    uint8_t crc;
};

typedef struct SDState SDState;

SDState *sd_init(BlockDriverState *bs, int is_spi);
int sd_do_command(SDState *sd, struct sd_request_s *req,
                  uint8_t *response);
void sd_write_data(SDState *sd, uint8_t value);
uint8_t sd_read_data(SDState *sd);
void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert);
int sd_data_ready(SDState *sd);
void sd_enable(SDState *sd, int enable);

/* ssi-sd.c */
int ssi_sd_xfer(void *opaque, int val);
void *ssi_sd_init(BlockDriverState *bs);

#endif	/* __hw_sd_h */