[mirror_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"
#include "qemu/module.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(BUS(&s->sdbus), 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;
    /* Reason: init() method uses drive_get_next() */
    dc->user_creatable = false;
}

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"
0b8fa32f	18	#include "qemu/module.h"
775616c3 PB	19
	20	//#define DEBUG_SSI_SD 1
	21
	22	#ifdef DEBUG_SSI_SD
001faf32 BS	23	#define DPRINTF(fmt, ...) \
	24	do { printf("ssi_sd: " fmt , ## __VA_ARGS__); } while (0)
	25	#define BADF(fmt, ...) \
	26	do { fprintf(stderr, "ssi_sd: error: " fmt , ## __VA_ARGS__); exit(1);} while (0)
775616c3	27	#else
001faf32 BS	28	#define DPRINTF(fmt, ...) do {} while(0)
	29	#define BADF(fmt, ...) \
	30	do { fprintf(stderr, "ssi_sd: error: " fmt , ## __VA_ARGS__);} while (0)
775616c3 PB	31	#endif
	32
	33	typedef enum {
2ccfd336	34	SSI_SD_CMD = 0,
775616c3 PB	35	SSI_SD_CMDARG,
	36	SSI_SD_RESPONSE,
	37	SSI_SD_DATA_START,
	38	SSI_SD_DATA_READ,
	39	} ssi_sd_mode;
	40
	41	typedef struct {
5493e33f	42	SSISlave ssidev;
2ccfd336	43	uint32_t mode;
775616c3 PB	44	int cmd;
	45	uint8_t cmdarg[4];
	46	uint8_t response[5];
2ccfd336 DDAG	47	int32_t arglen;
	48	int32_t response_pos;
	49	int32_t stopping;
c3abd913	50	SDBus sdbus;
775616c3 PB	51	} ssi_sd_state;
775616c3 PB	52
8046d44f PM	53	#define TYPE_SSI_SD "ssi-sd"
	54	#define SSI_SD(obj) OBJECT_CHECK(ssi_sd_state, (obj), TYPE_SSI_SD)
	55
775616c3 PB	56	/* State word bits. */
	57	#define SSI_SDR_LOCKED 0x0001
	58	#define SSI_SDR_WP_ERASE 0x0002
	59	#define SSI_SDR_ERROR 0x0004
	60	#define SSI_SDR_CC_ERROR 0x0008
	61	#define SSI_SDR_ECC_FAILED 0x0010
	62	#define SSI_SDR_WP_VIOLATION 0x0020
	63	#define SSI_SDR_ERASE_PARAM 0x0040
	64	#define SSI_SDR_OUT_OF_RANGE 0x0080
	65	#define SSI_SDR_IDLE 0x0100
	66	#define SSI_SDR_ERASE_RESET 0x0200
	67	#define SSI_SDR_ILLEGAL_COMMAND 0x0400
	68	#define SSI_SDR_COM_CRC_ERROR 0x0800
	69	#define SSI_SDR_ERASE_SEQ_ERROR 0x1000
	70	#define SSI_SDR_ADDRESS_ERROR 0x2000
	71	#define SSI_SDR_PARAMETER_ERROR 0x4000
	72
5493e33f	73	static uint32_t ssi_sd_transfer(SSISlave *dev, uint32_t val)
775616c3	74	{
5493e33f	75	ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, dev);
775616c3 PB	76
	77	/* Special case: allow CMD12 (STOP TRANSMISSION) while reading data. */
	78	if (s->mode == SSI_SD_DATA_READ && val == 0x4d) {
	79	s->mode = SSI_SD_CMD;
	80	/* There must be at least one byte delay before the card responds. */
	81	s->stopping = 1;
	82	}
	83
	84	switch (s->mode) {
	85	case SSI_SD_CMD:
	86	if (val == 0xff) {
	87	DPRINTF("NULL command\n");
	88	return 0xff;
	89	}
	90	s->cmd = val & 0x3f;
	91	s->mode = SSI_SD_CMDARG;
	92	s->arglen = 0;
	93	return 0xff;
	94	case SSI_SD_CMDARG:
	95	if (s->arglen == 4) {
bc24a225	96	SDRequest request;
775616c3 PB	97	uint8_t longresp[16];
	98	/* FIXME: Check CRC. */
	99	request.cmd = s->cmd;
b3141c06	100	request.arg = ldl_be_p(s->cmdarg);
775616c3	101	DPRINTF("CMD%d arg 0x%08x\n", s->cmd, request.arg);
c3abd913	102	s->arglen = sdbus_do_command(&s->sdbus, &request, longresp);
775616c3 PB	103	if (s->arglen <= 0) {
	104	s->arglen = 1;
	105	s->response[0] = 4;
	106	DPRINTF("SD command failed\n");
	107	} else if (s->cmd == 58) {
	108	/* CMD58 returns R3 response (OCR) */
	109	DPRINTF("Returned OCR\n");
	110	s->arglen = 5;
	111	s->response[0] = 1;
	112	memcpy(&s->response[1], longresp, 4);
	113	} else if (s->arglen != 4) {
	114	BADF("Unexpected response to cmd %d\n", s->cmd);
	115	/* Illegal command is about as near as we can get. */
	116	s->arglen = 1;
	117	s->response[0] = 4;
	118	} else {
	119	/* All other commands return status. */
	120	uint32_t cardstatus;
	121	uint16_t status;
	122	/* CMD13 returns a 2-byte statuse work. Other commands
	123	only return the first byte. */
	124	s->arglen = (s->cmd == 13) ? 2 : 1;
b3141c06	125	cardstatus = ldl_be_p(longresp);
775616c3 PB	126	status = 0;
	127	if (((cardstatus >> 9) & 0xf) < 4)
	128	status \|= SSI_SDR_IDLE;
	129	if (cardstatus & ERASE_RESET)
	130	status \|= SSI_SDR_ERASE_RESET;
	131	if (cardstatus & ILLEGAL_COMMAND)
	132	status \|= SSI_SDR_ILLEGAL_COMMAND;
	133	if (cardstatus & COM_CRC_ERROR)
	134	status \|= SSI_SDR_COM_CRC_ERROR;
	135	if (cardstatus & ERASE_SEQ_ERROR)
	136	status \|= SSI_SDR_ERASE_SEQ_ERROR;
	137	if (cardstatus & ADDRESS_ERROR)
	138	status \|= SSI_SDR_ADDRESS_ERROR;
	139	if (cardstatus & CARD_IS_LOCKED)
	140	status \|= SSI_SDR_LOCKED;
	141	if (cardstatus & (LOCK_UNLOCK_FAILED \| WP_ERASE_SKIP))
	142	status \|= SSI_SDR_WP_ERASE;
	143	if (cardstatus & SD_ERROR)
	144	status \|= SSI_SDR_ERROR;
	145	if (cardstatus & CC_ERROR)
	146	status \|= SSI_SDR_CC_ERROR;
	147	if (cardstatus & CARD_ECC_FAILED)
	148	status \|= SSI_SDR_ECC_FAILED;
	149	if (cardstatus & WP_VIOLATION)
	150	status \|= SSI_SDR_WP_VIOLATION;
	151	if (cardstatus & ERASE_PARAM)
	152	status \|= SSI_SDR_ERASE_PARAM;
	153	if (cardstatus & (OUT_OF_RANGE \| CID_CSD_OVERWRITE))
	154	status \|= SSI_SDR_OUT_OF_RANGE;
	155	/* ??? Don't know what Parameter Error really means, so
	156	assume it's set if the second byte is nonzero. */
	157	if (status & 0xff)
	158	status \|= SSI_SDR_PARAMETER_ERROR;
	159	s->response[0] = status >> 8;
	160	s->response[1] = status;
	161	DPRINTF("Card status 0x%02x\n", status);
	162	}
	163	s->mode = SSI_SD_RESPONSE;
	164	s->response_pos = 0;
	165	} else {
	166	s->cmdarg[s->arglen++] = val;
	167	}
	168	return 0xff;
	169	case SSI_SD_RESPONSE:
	170	if (s->stopping) {
	171	s->stopping = 0;
	172	return 0xff;
	173	}
	174	if (s->response_pos < s->arglen) {
	175	DPRINTF("Response 0x%02x\n", s->response[s->response_pos]);
	176	return s->response[s->response_pos++];
	177	}
c3abd913	178	if (sdbus_data_ready(&s->sdbus)) {
775616c3 PB	179	DPRINTF("Data read\n");
	180	s->mode = SSI_SD_DATA_START;
	181	} else {
	182	DPRINTF("End of command\n");
	183	s->mode = SSI_SD_CMD;
	184	}
	185	return 0xff;
	186	case SSI_SD_DATA_START:
	187	DPRINTF("Start read block\n");
	188	s->mode = SSI_SD_DATA_READ;
	189	return 0xfe;
	190	case SSI_SD_DATA_READ:
c3abd913 PMD	191	val = sdbus_read_data(&s->sdbus);
c3abd913 PMD	192	if (!sdbus_data_ready(&s->sdbus)) {
775616c3 PB	193	DPRINTF("Data read end\n");
	194	s->mode = SSI_SD_CMD;
	195	}
	196	return val;
	197	}
	198	/* Should never happen. */
	199	return 0xff;
	200	}
	201
2ccfd336	202	static int ssi_sd_post_load(void *opaque, int version_id)
23e39294 PB	203	{
23e39294 PB	204	ssi_sd_state s = (ssi_sd_state )opaque;
23e39294	205
2ccfd336	206	if (s->mode > SSI_SD_DATA_READ) {
23e39294	207	return -EINVAL;
2ccfd336	208	}
a9c380db MT	209	if (s->mode == SSI_SD_CMDARG &&
	210	(s->arglen < 0 \|\| s->arglen >= ARRAY_SIZE(s->cmdarg))) {
	211	return -EINVAL;
	212	}
a9c380db MT	213	if (s->mode == SSI_SD_RESPONSE &&
	214	(s->response_pos < 0 \|\| s->response_pos >= ARRAY_SIZE(s->response) \|\|
	215	(!s->stopping && s->arglen > ARRAY_SIZE(s->response)))) {
	216	return -EINVAL;
	217	}
23e39294 PB	218
	219	return 0;
	220	}
	221
2ccfd336 DDAG	222	static const VMStateDescription vmstate_ssi_sd = {
	223	.name = "ssi_sd",
	224	.version_id = 2,
	225	.minimum_version_id = 2,
	226	.post_load = ssi_sd_post_load,
	227	.fields = (VMStateField []) {
	228	VMSTATE_UINT32(mode, ssi_sd_state),
	229	VMSTATE_INT32(cmd, ssi_sd_state),
	230	VMSTATE_UINT8_ARRAY(cmdarg, ssi_sd_state, 4),
	231	VMSTATE_UINT8_ARRAY(response, ssi_sd_state, 5),
	232	VMSTATE_INT32(arglen, ssi_sd_state),
	233	VMSTATE_INT32(response_pos, ssi_sd_state),
	234	VMSTATE_INT32(stopping, ssi_sd_state),
	235	VMSTATE_SSI_SLAVE(ssidev, ssi_sd_state),
	236	VMSTATE_END_OF_LIST()
	237	}
	238	};
	239
7673bb4c	240	static void ssi_sd_realize(SSISlave d, Error *errp)
775616c3	241	{
1a7d9ee6	242	ssi_sd_state *s = FROM_SSI_SLAVE(ssi_sd_state, d);
c3abd913	243	DeviceState *carddev;
13839974	244	DriveInfo *dinfo;
c3abd913	245	Error *err = NULL;
775616c3	246
c3abd913 PMD	247	qbus_create_inplace(&s->sdbus, sizeof(s->sdbus), TYPE_SD_BUS,
	248	DEVICE(d), "sd-bus");
	249
	250	/* Create and plug in the sd card */
af9e40aa	251	/* FIXME use a qdev drive property instead of drive_get_next() */
13839974	252	dinfo = drive_get_next(IF_SD);
6afa968a	253	carddev = qdev_create(BUS(&s->sdbus), TYPE_SD_CARD);
c3abd913 PMD	254	if (dinfo) {
	255	qdev_prop_set_drive(carddev, "drive", blk_by_legacy_dinfo(dinfo), &err);
	256	}
	257	object_property_set_bool(OBJECT(carddev), true, "spi", &err);
	258	object_property_set_bool(OBJECT(carddev), true, "realized", &err);
	259	if (err) {
	260	error_setg(errp, "failed to init SD card: %s", error_get_pretty(err));
7673bb4c	261	return;
4f8a066b	262	}
775616c3	263	}
5493e33f	264
8046d44f PM	265	static void ssi_sd_reset(DeviceState *dev)
	266	{
	267	ssi_sd_state *s = SSI_SD(dev);
	268
	269	s->mode = SSI_SD_CMD;
	270	s->cmd = 0;
	271	memset(s->cmdarg, 0, sizeof(s->cmdarg));
	272	memset(s->response, 0, sizeof(s->response));
	273	s->arglen = 0;
	274	s->response_pos = 0;
	275	s->stopping = 0;
8046d44f PM	276	}
8046d44f PM	277
cd6c4cf2 AL	278	static void ssi_sd_class_init(ObjectClass klass, void data)
cd6c4cf2 AL	279	{
2ccfd336	280	DeviceClass *dc = DEVICE_CLASS(klass);
cd6c4cf2 AL	281	SSISlaveClass *k = SSI_SLAVE_CLASS(klass);
cd6c4cf2 AL	282
7673bb4c	283	k->realize = ssi_sd_realize;
cd6c4cf2	284	k->transfer = ssi_sd_transfer;
8120e714	285	k->cs_polarity = SSI_CS_LOW;
2ccfd336	286	dc->vmsd = &vmstate_ssi_sd;
8046d44f	287	dc->reset = ssi_sd_reset;
61e9e3cb MA	288	/* Reason: init() method uses drive_get_next() */
61e9e3cb MA	289	dc->user_creatable = false;
cd6c4cf2 AL	290	}
cd6c4cf2 AL	291
8c43a6f0	292	static const TypeInfo ssi_sd_info = {
8046d44f	293	.name = TYPE_SSI_SD,
39bffca2 AL	294	.parent = TYPE_SSI_SLAVE,
	295	.instance_size = sizeof(ssi_sd_state),
	296	.class_init = ssi_sd_class_init,
5493e33f PB	297	};
5493e33f PB	298
83f7d43a	299	static void ssi_sd_register_types(void)
5493e33f	300	{
39bffca2	301	type_register_static(&ssi_sd_info);
5493e33f PB	302	}
5493e33f PB	303
83f7d43a	304	type_init(ssi_sd_register_types)