[qemu.git] / hw / sd / ssi-sd.c

/*
 * SSI to SD card adapter.
 *
 * Copyright (c) 2007-2009 CodeSourcery.
 * Written by Paul Brook
 *
 * This code is licensed under the GNU GPL v2.
 *
 * Contributions after 2012-01-13 are licensed under the terms of the
 * GNU GPL, version 2 or (at your option) any later version.
 */

#include "qemu/osdep.h"
#include "sysemu/blockdev.h"
#include "hw/ssi/ssi.h"
#include "hw/sd/sd.h"
#include "qapi/error.h"

//#define DEBUG_SSI_SD 1

#ifdef DEBUG_SSI_SD
#define DPRINTF(fmt, ...) \
do { printf("ssi_sd: " fmt , ## __VA_ARGS__); } while (0)
#define BADF(fmt, ...) \
do { fprintf(stderr, "ssi_sd: error: " fmt , ## __VA_ARGS__); exit(1);} while (0)
#else
#define DPRINTF(fmt, ...) do {} while(0)
#define BADF(fmt, ...) \
do { fprintf(stderr, "ssi_sd: error: " fmt , ## __VA_ARGS__);} while (0)
#endif

typedef enum {
    SSI_SD_CMD = 0,
    SSI_SD_CMDARG,
    SSI_SD_RESPONSE,
    SSI_SD_DATA_START,
    SSI_SD_DATA_READ,
} ssi_sd_mode;

typedef struct {
    SSISlave ssidev;
    uint32_t mode;
    int cmd;
    uint8_t cmdarg[4];
    uint8_t response[5];
    int32_t arglen;
    int32_t response_pos;
    int32_t stopping;
    SDBus sdbus;
} ssi_sd_state;

#define TYPE_SSI_SD "ssi-sd"
#define SSI_SD(obj) OBJECT_CHECK(ssi_sd_state, (obj), TYPE_SSI_SD)

/* State word bits.  */
#define SSI_SDR_LOCKED          0x0001
#define SSI_SDR_WP_ERASE        0x0002
#define SSI_SDR_ERROR           0x0004
#define SSI_SDR_CC_ERROR        0x0008
#define SSI_SDR_ECC_FAILED      0x0010
#define SSI_SDR_WP_VIOLATION    0x0020
#define SSI_SDR_ERASE_PARAM     0x0040
#define SSI_SDR_OUT_OF_RANGE    0x0080
#define SSI_SDR_IDLE            0x0100
#define SSI_SDR_ERASE_RESET     0x0200
#define SSI_SDR_ILLEGAL_COMMAND 0x0400
#define SSI_SDR_COM_CRC_ERROR   0x0800
#define SSI_SDR_ERASE_SEQ_ERROR 0x1000
#define SSI_SDR_ADDRESS_ERROR   0x2000
#define SSI_SDR_PARAMETER_ERROR 0x4000

static uint32_t ssi_sd_transfer(SSISlave *dev, uint32_t val)
{
    ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, dev);

    /* Special case: allow CMD12 (STOP TRANSMISSION) while reading data.  */
    if (s->mode == SSI_SD_DATA_READ && val == 0x4d) {
        s->mode = SSI_SD_CMD;
        /* There must be at least one byte delay before the card responds.  */
        s->stopping = 1;
    }

    switch (s->mode) {
    case SSI_SD_CMD:
        if (val == 0xff) {
            DPRINTF("NULL command\n");
            return 0xff;
        }
        s->cmd = val & 0x3f;
        s->mode = SSI_SD_CMDARG;
        s->arglen = 0;
        return 0xff;
    case SSI_SD_CMDARG:
        if (s->arglen == 4) {
            SDRequest request;
            uint8_t longresp[16];
            /* FIXME: Check CRC.  */
            request.cmd = s->cmd;
            request.arg = ldl_be_p(s->cmdarg);
            DPRINTF("CMD%d arg 0x%08x\n", s->cmd, request.arg);
            s->arglen = sdbus_do_command(&s->sdbus, &request, longresp);
            if (s->arglen <= 0) {
                s->arglen = 1;
                s->response[0] = 4;
                DPRINTF("SD command failed\n");
            } else if (s->cmd == 58) {
                /* CMD58 returns R3 response (OCR)  */
                DPRINTF("Returned OCR\n");
                s->arglen = 5;
                s->response[0] = 1;
                memcpy(&s->response[1], longresp, 4);
            } else if (s->arglen != 4) {
                BADF("Unexpected response to cmd %d\n", s->cmd);
                /* Illegal command is about as near as we can get.  */
                s->arglen = 1;
                s->response[0] = 4;
            } else {
                /* All other commands return status.  */
                uint32_t cardstatus;
                uint16_t status;
                /* CMD13 returns a 2-byte statuse work. Other commands
                   only return the first byte.  */
                s->arglen = (s->cmd == 13) ? 2 : 1;
                cardstatus = ldl_be_p(longresp);
                status = 0;
                if (((cardstatus >> 9) & 0xf) < 4)
                    status |= SSI_SDR_IDLE;
                if (cardstatus & ERASE_RESET)
                    status |= SSI_SDR_ERASE_RESET;
                if (cardstatus & ILLEGAL_COMMAND)
                    status |= SSI_SDR_ILLEGAL_COMMAND;
                if (cardstatus & COM_CRC_ERROR)
                    status |= SSI_SDR_COM_CRC_ERROR;
                if (cardstatus & ERASE_SEQ_ERROR)
                    status |= SSI_SDR_ERASE_SEQ_ERROR;
                if (cardstatus & ADDRESS_ERROR)
                    status |= SSI_SDR_ADDRESS_ERROR;
                if (cardstatus & CARD_IS_LOCKED)
                    status |= SSI_SDR_LOCKED;
                if (cardstatus & (LOCK_UNLOCK_FAILED | WP_ERASE_SKIP))
                    status |= SSI_SDR_WP_ERASE;
                if (cardstatus & SD_ERROR)
                    status |= SSI_SDR_ERROR;
                if (cardstatus & CC_ERROR)
                    status |= SSI_SDR_CC_ERROR;
                if (cardstatus & CARD_ECC_FAILED)
                    status |= SSI_SDR_ECC_FAILED;
                if (cardstatus & WP_VIOLATION)
                    status |= SSI_SDR_WP_VIOLATION;
                if (cardstatus & ERASE_PARAM)
                    status |= SSI_SDR_ERASE_PARAM;
                if (cardstatus & (OUT_OF_RANGE | CID_CSD_OVERWRITE))
                    status |= SSI_SDR_OUT_OF_RANGE;
                /* ??? Don't know what Parameter Error really means, so
                   assume it's set if the second byte is nonzero.  */
                if (status & 0xff)
                    status |= SSI_SDR_PARAMETER_ERROR;
                s->response[0] = status >> 8;
                s->response[1] = status;
                DPRINTF("Card status 0x%02x\n", status);
            }
            s->mode = SSI_SD_RESPONSE;
            s->response_pos = 0;
        } else {
            s->cmdarg[s->arglen++] = val;
        }
        return 0xff;
    case SSI_SD_RESPONSE:
        if (s->stopping) {
            s->stopping = 0;
            return 0xff;
        }
        if (s->response_pos < s->arglen) {
            DPRINTF("Response 0x%02x\n", s->response[s->response_pos]);
            return s->response[s->response_pos++];
        }
        if (sdbus_data_ready(&s->sdbus)) {
            DPRINTF("Data read\n");
            s->mode = SSI_SD_DATA_START;
        } else {
            DPRINTF("End of command\n");
            s->mode = SSI_SD_CMD;
        }
        return 0xff;
    case SSI_SD_DATA_START:
        DPRINTF("Start read block\n");
        s->mode = SSI_SD_DATA_READ;
        return 0xfe;
    case SSI_SD_DATA_READ:
        val = sdbus_read_data(&s->sdbus);
        if (!sdbus_data_ready(&s->sdbus)) {
            DPRINTF("Data read end\n");
            s->mode = SSI_SD_CMD;
        }
        return val;
    }
    /* Should never happen.  */
    return 0xff;
}

static int ssi_sd_post_load(void *opaque, int version_id)
{
    ssi_sd_state *s = (ssi_sd_state *)opaque;

    if (s->mode > SSI_SD_DATA_READ) {
        return -EINVAL;
    }
    if (s->mode == SSI_SD_CMDARG &&
        (s->arglen < 0 || s->arglen >= ARRAY_SIZE(s->cmdarg))) {
        return -EINVAL;
    }
    if (s->mode == SSI_SD_RESPONSE &&
        (s->response_pos < 0 || s->response_pos >= ARRAY_SIZE(s->response) ||
        (!s->stopping && s->arglen > ARRAY_SIZE(s->response)))) {
        return -EINVAL;
    }

    return 0;
}

static const VMStateDescription vmstate_ssi_sd = {
    .name = "ssi_sd",
    .version_id = 2,
    .minimum_version_id = 2,
    .post_load = ssi_sd_post_load,
    .fields = (VMStateField []) {
        VMSTATE_UINT32(mode, ssi_sd_state),
        VMSTATE_INT32(cmd, ssi_sd_state),
        VMSTATE_UINT8_ARRAY(cmdarg, ssi_sd_state, 4),
        VMSTATE_UINT8_ARRAY(response, ssi_sd_state, 5),
        VMSTATE_INT32(arglen, ssi_sd_state),
        VMSTATE_INT32(response_pos, ssi_sd_state),
        VMSTATE_INT32(stopping, ssi_sd_state),
        VMSTATE_SSI_SLAVE(ssidev, ssi_sd_state),
        VMSTATE_END_OF_LIST()
    }
};

static void ssi_sd_realize(SSISlave *d, Error **errp)
{
    ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, d);
    DeviceState *carddev;
    DriveInfo *dinfo;
    Error *err = NULL;

    qbus_create_inplace(&s->sdbus, sizeof(s->sdbus), TYPE_SD_BUS,
                        DEVICE(d), "sd-bus");

    /* Create and plug in the sd card */
    /* FIXME use a qdev drive property instead of drive_get_next() */
    dinfo = drive_get_next(IF_SD);
    carddev = qdev_create(&s->sdbus.qbus, TYPE_SD_CARD);
    if (dinfo) {
        qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo), &err);
    }
    object_property_set_bool(OBJECT(carddev), true, "spi", &err);
    object_property_set_bool(OBJECT(carddev), true, "realized", &err);
    if (err) {
        error_setg(errp, "failed to init SD card: %s", error_get_pretty(err));
        return;
    }
}

static void ssi_sd_reset(DeviceState *dev)
{
    ssi_sd_state *s = SSI_SD(dev);

    s->mode = SSI_SD_CMD;
    s->cmd = 0;
    memset(s->cmdarg, 0, sizeof(s->cmdarg));
    memset(s->response, 0, sizeof(s->response));
    s->arglen = 0;
    s->response_pos = 0;
    s->stopping = 0;
}

static void ssi_sd_class_init(ObjectClass *klass, void *data)
{
    DeviceClass *dc = DEVICE_CLASS(klass);
    SSISlaveClass *k = SSI_SLAVE_CLASS(klass);

    k->realize = ssi_sd_realize;
    k->transfer = ssi_sd_transfer;
    k->cs_polarity = SSI_CS_LOW;
    dc->vmsd = &vmstate_ssi_sd;
    dc->reset = ssi_sd_reset;
}

static const TypeInfo ssi_sd_info = {
    .name          = TYPE_SSI_SD,
    .parent        = TYPE_SSI_SLAVE,
    .instance_size = sizeof(ssi_sd_state),
    .class_init    = ssi_sd_class_init,
};

static void ssi_sd_register_types(void)
{
    type_register_static(&ssi_sd_info);
}

type_init(ssi_sd_register_types)
Commit	Line	Data
775616c3 PB	1	/*
	2	* SSI to SD card adapter.
	3	*
5493e33f	4	* Copyright (c) 2007-2009 CodeSourcery.
775616c3 PB	5	* Written by Paul Brook
775616c3 PB	6	*
8e31bf38	7	* This code is licensed under the GNU GPL v2.
6b620ca3 PB	8	*
	9	* Contributions after 2012-01-13 are licensed under the terms of the
	10	* GNU GPL, version 2 or (at your option) any later version.
775616c3 PB	11	*/
775616c3 PB	12
0430891c	13	#include "qemu/osdep.h"
9c17d615	14	#include "sysemu/blockdev.h"
8fd06719	15	#include "hw/ssi/ssi.h"
e3382ef0	16	#include "hw/sd/sd.h"
7673bb4c	17	#include "qapi/error.h"
775616c3 PB	18
	19	//#define DEBUG_SSI_SD 1
	20
	21	#ifdef DEBUG_SSI_SD
001faf32 BS	22	#define DPRINTF(fmt, ...) \
	23	do { printf("ssi_sd: " fmt , ## __VA_ARGS__); } while (0)
	24	#define BADF(fmt, ...) \
	25	do { fprintf(stderr, "ssi_sd: error: " fmt , ## __VA_ARGS__); exit(1);} while (0)
775616c3	26	#else
001faf32 BS	27	#define DPRINTF(fmt, ...) do {} while(0)
	28	#define BADF(fmt, ...) \
	29	do { fprintf(stderr, "ssi_sd: error: " fmt , ## __VA_ARGS__);} while (0)
775616c3 PB	30	#endif
	31
	32	typedef enum {
2ccfd336	33	SSI_SD_CMD = 0,
775616c3 PB	34	SSI_SD_CMDARG,
	35	SSI_SD_RESPONSE,
	36	SSI_SD_DATA_START,
	37	SSI_SD_DATA_READ,
	38	} ssi_sd_mode;
	39
	40	typedef struct {
5493e33f	41	SSISlave ssidev;
2ccfd336	42	uint32_t mode;
775616c3 PB	43	int cmd;
	44	uint8_t cmdarg[4];
	45	uint8_t response[5];
2ccfd336 DDAG	46	int32_t arglen;
	47	int32_t response_pos;
	48	int32_t stopping;
c3abd913	49	SDBus sdbus;
775616c3 PB	50	} ssi_sd_state;
775616c3 PB	51
8046d44f PM	52	#define TYPE_SSI_SD "ssi-sd"
	53	#define SSI_SD(obj) OBJECT_CHECK(ssi_sd_state, (obj), TYPE_SSI_SD)
	54
775616c3 PB	55	/* State word bits. */
	56	#define SSI_SDR_LOCKED 0x0001
	57	#define SSI_SDR_WP_ERASE 0x0002
	58	#define SSI_SDR_ERROR 0x0004
	59	#define SSI_SDR_CC_ERROR 0x0008
	60	#define SSI_SDR_ECC_FAILED 0x0010
	61	#define SSI_SDR_WP_VIOLATION 0x0020
	62	#define SSI_SDR_ERASE_PARAM 0x0040
	63	#define SSI_SDR_OUT_OF_RANGE 0x0080
	64	#define SSI_SDR_IDLE 0x0100
	65	#define SSI_SDR_ERASE_RESET 0x0200
	66	#define SSI_SDR_ILLEGAL_COMMAND 0x0400
	67	#define SSI_SDR_COM_CRC_ERROR 0x0800
	68	#define SSI_SDR_ERASE_SEQ_ERROR 0x1000
	69	#define SSI_SDR_ADDRESS_ERROR 0x2000
	70	#define SSI_SDR_PARAMETER_ERROR 0x4000
	71
5493e33f	72	static uint32_t ssi_sd_transfer(SSISlave *dev, uint32_t val)
775616c3	73	{
5493e33f	74	ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, dev);
775616c3 PB	75
	76	/* Special case: allow CMD12 (STOP TRANSMISSION) while reading data. */
	77	if (s->mode == SSI_SD_DATA_READ && val == 0x4d) {
	78	s->mode = SSI_SD_CMD;
	79	/* There must be at least one byte delay before the card responds. */
	80	s->stopping = 1;
	81	}
	82
	83	switch (s->mode) {
	84	case SSI_SD_CMD:
	85	if (val == 0xff) {
	86	DPRINTF("NULL command\n");
	87	return 0xff;
	88	}
	89	s->cmd = val & 0x3f;
	90	s->mode = SSI_SD_CMDARG;
	91	s->arglen = 0;
	92	return 0xff;
	93	case SSI_SD_CMDARG:
	94	if (s->arglen == 4) {
bc24a225	95	SDRequest request;
775616c3 PB	96	uint8_t longresp[16];
	97	/* FIXME: Check CRC. */
	98	request.cmd = s->cmd;
b3141c06	99	request.arg = ldl_be_p(s->cmdarg);
775616c3	100	DPRINTF("CMD%d arg 0x%08x\n", s->cmd, request.arg);
c3abd913	101	s->arglen = sdbus_do_command(&s->sdbus, &request, longresp);
775616c3 PB	102	if (s->arglen <= 0) {
	103	s->arglen = 1;
	104	s->response[0] = 4;
	105	DPRINTF("SD command failed\n");
	106	} else if (s->cmd == 58) {
	107	/* CMD58 returns R3 response (OCR) */
	108	DPRINTF("Returned OCR\n");
	109	s->arglen = 5;
	110	s->response[0] = 1;
	111	memcpy(&s->response[1], longresp, 4);
	112	} else if (s->arglen != 4) {
	113	BADF("Unexpected response to cmd %d\n", s->cmd);
	114	/* Illegal command is about as near as we can get. */
	115	s->arglen = 1;
	116	s->response[0] = 4;
	117	} else {
	118	/* All other commands return status. */
	119	uint32_t cardstatus;
	120	uint16_t status;
	121	/* CMD13 returns a 2-byte statuse work. Other commands
	122	only return the first byte. */
	123	s->arglen = (s->cmd == 13) ? 2 : 1;
b3141c06	124	cardstatus = ldl_be_p(longresp);
775616c3 PB	125	status = 0;
	126	if (((cardstatus >> 9) & 0xf) < 4)
	127	status \|= SSI_SDR_IDLE;
	128	if (cardstatus & ERASE_RESET)
	129	status \|= SSI_SDR_ERASE_RESET;
	130	if (cardstatus & ILLEGAL_COMMAND)
	131	status \|= SSI_SDR_ILLEGAL_COMMAND;
	132	if (cardstatus & COM_CRC_ERROR)
	133	status \|= SSI_SDR_COM_CRC_ERROR;
	134	if (cardstatus & ERASE_SEQ_ERROR)
	135	status \|= SSI_SDR_ERASE_SEQ_ERROR;
	136	if (cardstatus & ADDRESS_ERROR)
	137	status \|= SSI_SDR_ADDRESS_ERROR;
	138	if (cardstatus & CARD_IS_LOCKED)
	139	status \|= SSI_SDR_LOCKED;
	140	if (cardstatus & (LOCK_UNLOCK_FAILED \| WP_ERASE_SKIP))
	141	status \|= SSI_SDR_WP_ERASE;
	142	if (cardstatus & SD_ERROR)
	143	status \|= SSI_SDR_ERROR;
	144	if (cardstatus & CC_ERROR)
	145	status \|= SSI_SDR_CC_ERROR;
	146	if (cardstatus & CARD_ECC_FAILED)
	147	status \|= SSI_SDR_ECC_FAILED;
	148	if (cardstatus & WP_VIOLATION)
	149	status \|= SSI_SDR_WP_VIOLATION;
	150	if (cardstatus & ERASE_PARAM)
	151	status \|= SSI_SDR_ERASE_PARAM;
	152	if (cardstatus & (OUT_OF_RANGE \| CID_CSD_OVERWRITE))
	153	status \|= SSI_SDR_OUT_OF_RANGE;
	154	/* ??? Don't know what Parameter Error really means, so
	155	assume it's set if the second byte is nonzero. */
	156	if (status & 0xff)
	157	status \|= SSI_SDR_PARAMETER_ERROR;
	158	s->response[0] = status >> 8;
	159	s->response[1] = status;
	160	DPRINTF("Card status 0x%02x\n", status);
	161	}
	162	s->mode = SSI_SD_RESPONSE;
	163	s->response_pos = 0;
	164	} else {
	165	s->cmdarg[s->arglen++] = val;
	166	}
	167	return 0xff;
	168	case SSI_SD_RESPONSE:
	169	if (s->stopping) {
	170	s->stopping = 0;
	171	return 0xff;
	172	}
	173	if (s->response_pos < s->arglen) {
	174	DPRINTF("Response 0x%02x\n", s->response[s->response_pos]);
	175	return s->response[s->response_pos++];
	176	}
c3abd913	177	if (sdbus_data_ready(&s->sdbus)) {
775616c3 PB	178	DPRINTF("Data read\n");
	179	s->mode = SSI_SD_DATA_START;
	180	} else {
	181	DPRINTF("End of command\n");
	182	s->mode = SSI_SD_CMD;
	183	}
	184	return 0xff;
	185	case SSI_SD_DATA_START:
	186	DPRINTF("Start read block\n");
	187	s->mode = SSI_SD_DATA_READ;
	188	return 0xfe;
	189	case SSI_SD_DATA_READ:
c3abd913 PMD	190	val = sdbus_read_data(&s->sdbus);
c3abd913 PMD	191	if (!sdbus_data_ready(&s->sdbus)) {
775616c3 PB	192	DPRINTF("Data read end\n");
	193	s->mode = SSI_SD_CMD;
	194	}
	195	return val;
	196	}
	197	/* Should never happen. */
	198	return 0xff;
	199	}
	200
2ccfd336	201	static int ssi_sd_post_load(void *opaque, int version_id)
23e39294 PB	202	{
23e39294 PB	203	ssi_sd_state s = (ssi_sd_state )opaque;
23e39294	204
2ccfd336	205	if (s->mode > SSI_SD_DATA_READ) {
23e39294	206	return -EINVAL;
2ccfd336	207	}
a9c380db MT	208	if (s->mode == SSI_SD_CMDARG &&
	209	(s->arglen < 0 \|\| s->arglen >= ARRAY_SIZE(s->cmdarg))) {
	210	return -EINVAL;
	211	}
a9c380db MT	212	if (s->mode == SSI_SD_RESPONSE &&
	213	(s->response_pos < 0 \|\| s->response_pos >= ARRAY_SIZE(s->response) \|\|
	214	(!s->stopping && s->arglen > ARRAY_SIZE(s->response)))) {
	215	return -EINVAL;
	216	}
23e39294 PB	217
	218	return 0;
	219	}
	220
2ccfd336 DDAG	221	static const VMStateDescription vmstate_ssi_sd = {
	222	.name = "ssi_sd",
	223	.version_id = 2,
	224	.minimum_version_id = 2,
	225	.post_load = ssi_sd_post_load,
	226	.fields = (VMStateField []) {
	227	VMSTATE_UINT32(mode, ssi_sd_state),
	228	VMSTATE_INT32(cmd, ssi_sd_state),
	229	VMSTATE_UINT8_ARRAY(cmdarg, ssi_sd_state, 4),
	230	VMSTATE_UINT8_ARRAY(response, ssi_sd_state, 5),
	231	VMSTATE_INT32(arglen, ssi_sd_state),
	232	VMSTATE_INT32(response_pos, ssi_sd_state),
	233	VMSTATE_INT32(stopping, ssi_sd_state),
	234	VMSTATE_SSI_SLAVE(ssidev, ssi_sd_state),
	235	VMSTATE_END_OF_LIST()
	236	}
	237	};
	238
7673bb4c	239	static void ssi_sd_realize(SSISlave d, Error *errp)
775616c3	240	{
1a7d9ee6	241	ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, d);
c3abd913	242	DeviceState *carddev;
13839974	243	DriveInfo *dinfo;
c3abd913	244	Error *err = NULL;
775616c3	245
c3abd913 PMD	246	qbus_create_inplace(&s->sdbus, sizeof(s->sdbus), TYPE_SD_BUS,
	247	DEVICE(d), "sd-bus");
	248
	249	/* Create and plug in the sd card */
af9e40aa	250	/* FIXME use a qdev drive property instead of drive_get_next() */
13839974	251	dinfo = drive_get_next(IF_SD);
c3abd913 PMD	252	carddev = qdev_create(&s->sdbus.qbus, TYPE_SD_CARD);
	253	if (dinfo) {
	254	qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo), &err);
	255	}
	256	object_property_set_bool(OBJECT(carddev), true, "spi", &err);
	257	object_property_set_bool(OBJECT(carddev), true, "realized", &err);
	258	if (err) {
	259	error_setg(errp, "failed to init SD card: %s", error_get_pretty(err));
7673bb4c	260	return;
4f8a066b	261	}
775616c3	262	}
5493e33f	263
8046d44f PM	264	static void ssi_sd_reset(DeviceState *dev)
	265	{
	266	ssi_sd_state *s = SSI_SD(dev);
	267
	268	s->mode = SSI_SD_CMD;
	269	s->cmd = 0;
	270	memset(s->cmdarg, 0, sizeof(s->cmdarg));
	271	memset(s->response, 0, sizeof(s->response));
	272	s->arglen = 0;
	273	s->response_pos = 0;
	274	s->stopping = 0;
8046d44f PM	275	}
8046d44f PM	276
cd6c4cf2 AL	277	static void ssi_sd_class_init(ObjectClass klass, void data)
cd6c4cf2 AL	278	{
2ccfd336	279	DeviceClass *dc = DEVICE_CLASS(klass);
cd6c4cf2 AL	280	SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
cd6c4cf2 AL	281
7673bb4c	282	k->realize = ssi_sd_realize;
cd6c4cf2	283	k->transfer = ssi_sd_transfer;
8120e714	284	k->cs_polarity = SSI_CS_LOW;
2ccfd336	285	dc->vmsd = &vmstate_ssi_sd;
8046d44f	286	dc->reset = ssi_sd_reset;
cd6c4cf2 AL	287	}
cd6c4cf2 AL	288
8c43a6f0	289	static const TypeInfo ssi_sd_info = {
8046d44f	290	.name = TYPE_SSI_SD,
39bffca2 AL	291	.parent = TYPE_SSI_SLAVE,
	292	.instance_size = sizeof(ssi_sd_state),
	293	.class_init = ssi_sd_class_init,
5493e33f PB	294	};
5493e33f PB	295
83f7d43a	296	static void ssi_sd_register_types(void)
5493e33f	297	{
39bffca2	298	type_register_static(&ssi_sd_info);
5493e33f PB	299	}
5493e33f PB	300
83f7d43a	301	type_init(ssi_sd_register_types)