#include "block.h"
#include "scsi-disk.h"
-#ifndef __linux__
-
-SCSIDevice *scsi_generic_init(BlockDriverState *bdrv, int tcq,
- scsi_completionfn completion, void *opaque)
-{
- return NULL;
-}
-
-#else /* __linux__ */
+#ifdef __linux__
//#define DEBUG_SCSI
#define MAX_UINT ((unsigned int)-1)
#endif
+typedef struct SCSIGenericState SCSIGenericState;
+
typedef struct SCSIRequest {
BlockDriverAIOCB *aiocb;
struct SCSIRequest *next;
- SCSIDeviceState *dev;
+ SCSIBus *bus;
+ SCSIGenericState *dev;
uint32_t tag;
uint8_t cmd[SCSI_CMD_BUF_SIZE];
int cmdlen;
sg_io_hdr_t io_header;
} SCSIRequest;
-struct SCSIDeviceState
+struct SCSIGenericState
{
+ SCSIDevice qdev;
SCSIRequest *requests;
- BlockDriverState *bdrv;
+ DriveInfo *dinfo;
int type;
int blocksize;
int lun;
- scsi_completionfn completion;
- void *opaque;
int driver_status;
uint8_t sensebuf[SCSI_SENSE_BUF_SIZE];
uint8_t senselen;
/* Global pool of SCSIRequest structures. */
static SCSIRequest *free_requests = NULL;
-static SCSIRequest *scsi_new_request(SCSIDeviceState *s, uint32_t tag)
+static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag)
{
+ SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d);
SCSIRequest *r;
if (free_requests) {
r->buf = NULL;
r->buflen = 0;
}
+ r->bus = scsi_bus_from_device(d);
r->dev = s;
r->tag = tag;
memset(r->cmd, 0, sizeof(r->cmd));
static void scsi_remove_request(SCSIRequest *r)
{
SCSIRequest *last;
- SCSIDeviceState *s = r->dev;
+ SCSIGenericState *s = r->dev;
if (s->requests == r) {
s->requests = r->next;
free_requests = r;
}
-static SCSIRequest *scsi_find_request(SCSIDeviceState *s, uint32_t tag)
+static SCSIRequest *scsi_find_request(SCSIGenericState *s, uint32_t tag)
{
SCSIRequest *r;
static void scsi_command_complete(void *opaque, int ret)
{
SCSIRequest *r = (SCSIRequest *)opaque;
- SCSIDeviceState *s = r->dev;
+ SCSIGenericState *s = r->dev;
uint32_t tag;
int status;
r, r->tag, status);
tag = r->tag;
scsi_remove_request(r);
- s->completion(s->opaque, SCSI_REASON_DONE, tag, status);
+ r->bus->complete(r->bus, SCSI_REASON_DONE, tag, status);
}
/* Cancel a pending data transfer. */
static void scsi_cancel_io(SCSIDevice *d, uint32_t tag)
{
DPRINTF("scsi_cancel_io 0x%x\n", tag);
- SCSIDeviceState *s = d->state;
+ SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d);
SCSIRequest *r;
DPRINTF("Cancel tag=0x%x\n", tag);
r = scsi_find_request(s, tag);
static void scsi_read_complete(void * opaque, int ret)
{
SCSIRequest *r = (SCSIRequest *)opaque;
- SCSIDeviceState *s = r->dev;
int len;
if (ret) {
DPRINTF("Data ready tag=0x%x len=%d\n", r->tag, len);
r->len = -1;
- s->completion(s->opaque, SCSI_REASON_DATA, r->tag, len);
+ r->bus->complete(r->bus, SCSI_REASON_DATA, r->tag, len);
if (len == 0)
scsi_command_complete(r, 0);
}
/* Read more data from scsi device into buffer. */
static void scsi_read_data(SCSIDevice *d, uint32_t tag)
{
- SCSIDeviceState *s = d->state;
+ SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d);
SCSIRequest *r;
int ret;
DPRINTF("Sense: %d %d %d %d %d %d %d %d\n",
r->buf[0], r->buf[1], r->buf[2], r->buf[3],
r->buf[4], r->buf[5], r->buf[6], r->buf[7]);
- s->completion(s->opaque, SCSI_REASON_DATA, r->tag, s->senselen);
+ r->bus->complete(r->bus, SCSI_REASON_DATA, r->tag, s->senselen);
return;
}
- ret = execute_command(s->bdrv, r, SG_DXFER_FROM_DEV, scsi_read_complete);
+ ret = execute_command(s->dinfo->bdrv, r, SG_DXFER_FROM_DEV, scsi_read_complete);
if (ret == -1) {
scsi_command_complete(r, -EINVAL);
return;
The transfer may complete asynchronously. */
static int scsi_write_data(SCSIDevice *d, uint32_t tag)
{
- SCSIDeviceState *s = d->state;
+ SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d);
SCSIRequest *r;
int ret;
if (r->len == 0) {
r->len = r->buflen;
- s->completion(s->opaque, SCSI_REASON_DATA, r->tag, r->len);
+ r->bus->complete(r->bus, SCSI_REASON_DATA, r->tag, r->len);
return 0;
}
- ret = execute_command(s->bdrv, r, SG_DXFER_TO_DEV, scsi_write_complete);
+ ret = execute_command(s->dinfo->bdrv, r, SG_DXFER_TO_DEV, scsi_write_complete);
if (ret == -1) {
scsi_command_complete(r, -EINVAL);
return 1;
/* Return a pointer to the data buffer. */
static uint8_t *scsi_get_buf(SCSIDevice *d, uint32_t tag)
{
- SCSIDeviceState *s = d->state;
+ SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d);
SCSIRequest *r;
r = scsi_find_request(s, tag);
if (!r) {
static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
uint8_t *cmd, int lun)
{
- SCSIDeviceState *s = d->state;
+ SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d);
uint32_t len=0;
int cmdlen=0;
SCSIRequest *r;
+ SCSIBus *bus;
int ret;
if (s->type == TYPE_TAPE) {
s->sensebuf[6] = 0x00;
s->senselen = 7;
s->driver_status = SG_ERR_DRIVER_SENSE;
- s->completion(s->opaque, SCSI_REASON_DONE, tag, CHECK_CONDITION << 1);
+ bus = scsi_bus_from_device(d);
+ bus->complete(bus, SCSI_REASON_DONE, tag, CHECK_CONDITION << 1);
return 0;
}
BADF("Tag 0x%x already in use %p\n", tag, r);
scsi_cancel_io(d, tag);
}
- r = scsi_new_request(s, tag);
+ r = scsi_new_request(d, tag);
memcpy(r->cmd, cmd, cmdlen);
r->cmdlen = cmdlen;
free(r->buf);
r->buflen = 0;
r->buf = NULL;
- ret = execute_command(s->bdrv, r, SG_DXFER_NONE, scsi_command_complete);
+ ret = execute_command(s->dinfo->bdrv, r, SG_DXFER_NONE, scsi_command_complete);
if (ret == -1) {
scsi_command_complete(r, -EINVAL);
return 0;
static void scsi_destroy(SCSIDevice *d)
{
+ SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, d);
SCSIRequest *r, *n;
- r = d->state->requests;
+ r = s->requests;
while (r) {
n = r->next;
qemu_free(r);
r = n;
}
- qemu_free(d->state);
qemu_free(d);
}
-SCSIDevice *scsi_generic_init(BlockDriverState *bdrv, int tcq,
- scsi_completionfn completion, void *opaque)
+static int scsi_generic_initfn(SCSIDevice *dev)
{
+ SCSIGenericState *s = DO_UPCAST(SCSIGenericState, qdev, dev);
int sg_version;
- SCSIDevice *d;
- SCSIDeviceState *s;
struct sg_scsi_id scsiid;
- /* check we are really using a /dev/sg* file */
+ if (!s->dinfo || !s->dinfo->bdrv) {
+ qemu_error("scsi-generic: drive property not set\n");
+ return -1;
+ }
- if (!bdrv_is_sg(bdrv))
- return NULL;
+ /* check we are really using a /dev/sg* file */
+ if (!bdrv_is_sg(s->dinfo->bdrv)) {
+ qemu_error("scsi-generic: not /dev/sg*\n");
+ return -1;
+ }
/* check we are using a driver managing SG_IO (version 3 and after */
-
- if (bdrv_ioctl(bdrv, SG_GET_VERSION_NUM, &sg_version) < 0 ||
- sg_version < 30000)
- return NULL;
+ if (bdrv_ioctl(s->dinfo->bdrv, SG_GET_VERSION_NUM, &sg_version) < 0 ||
+ sg_version < 30000) {
+ qemu_error("scsi-generic: scsi generic interface too old\n");
+ return -1;
+ }
/* get LUN of the /dev/sg? */
-
- if (bdrv_ioctl(bdrv, SG_GET_SCSI_ID, &scsiid))
- return NULL;
+ if (bdrv_ioctl(s->dinfo->bdrv, SG_GET_SCSI_ID, &scsiid)) {
+ qemu_error("scsi-generic: SG_GET_SCSI_ID ioctl failed\n");
+ return -1;
+ }
/* define device state */
-
- s = (SCSIDeviceState *)qemu_mallocz(sizeof(SCSIDeviceState));
- s->bdrv = bdrv;
- s->requests = NULL;
- s->completion = completion;
- s->opaque = opaque;
s->lun = scsiid.lun;
DPRINTF("LUN %d\n", s->lun);
s->type = scsiid.scsi_type;
DPRINTF("device type %d\n", s->type);
if (s->type == TYPE_TAPE) {
- s->blocksize = get_stream_blocksize(s->bdrv);
+ s->blocksize = get_stream_blocksize(s->dinfo->bdrv);
if (s->blocksize == -1)
s->blocksize = 0;
} else {
- s->blocksize = get_blocksize(s->bdrv);
+ s->blocksize = get_blocksize(s->dinfo->bdrv);
/* removable media returns 0 if not present */
if (s->blocksize <= 0) {
if (s->type == TYPE_ROM || s->type == TYPE_WORM)
DPRINTF("block size %d\n", s->blocksize);
s->driver_status = 0;
memset(s->sensebuf, 0, sizeof(s->sensebuf));
+ return 0;
+}
- /* define function to manage device */
-
- d = (SCSIDevice *)qemu_mallocz(sizeof(SCSIDevice));
- d->state = s;
- d->destroy = scsi_destroy;
- d->send_command = scsi_send_command;
- d->read_data = scsi_read_data;
- d->write_data = scsi_write_data;
- d->cancel_io = scsi_cancel_io;
- d->get_buf = scsi_get_buf;
+static SCSIDeviceInfo scsi_generic_info = {
+ .qdev.name = "scsi-generic",
+ .qdev.desc = "pass through generic scsi device (/dev/sg*)",
+ .qdev.size = sizeof(SCSIGenericState),
+ .init = scsi_generic_initfn,
+ .destroy = scsi_destroy,
+ .send_command = scsi_send_command,
+ .read_data = scsi_read_data,
+ .write_data = scsi_write_data,
+ .cancel_io = scsi_cancel_io,
+ .get_buf = scsi_get_buf,
+ .qdev.props = (Property[]) {
+ DEFINE_PROP_DRIVE("drive", SCSIGenericState, dinfo),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+};
- return d;
+static void scsi_generic_register_devices(void)
+{
+ scsi_qdev_register(&scsi_generic_info);
}
+device_init(scsi_generic_register_devices)
+
#endif /* __linux__ */
projects / qemu / blobdiff