* 2009-Oct-13 Artyom Tarasenko : implemented the block descriptor in the
* MODE SENSE response.
*
- * This code is licenced under the LGPL.
+ * This code is licensed under the LGPL.
*
* Note that this file only handles the SCSI architecture model and device
* commands. Emulation of interface/link layer protocols is handled by
typedef struct SCSIDiskState SCSIDiskState;
-typedef struct SCSISense {
- uint8_t key;
-} SCSISense;
-
typedef struct SCSIDiskReq {
SCSIRequest req;
- /* ??? We should probably keep track of whether the data transfer is
- a read or a write. Currently we rely on the host getting it right. */
/* Both sector and sector_count are in terms of qemu 512 byte blocks. */
uint64_t sector;
uint32_t sector_count;
static int scsi_handle_rw_error(SCSIDiskReq *r, int error, int type);
static int scsi_disk_emulate_command(SCSIDiskReq *r, uint8_t *outbuf);
-static SCSIDiskReq *scsi_new_request(SCSIDiskState *s, uint32_t tag,
- uint32_t lun)
+static SCSIRequest *scsi_new_request(SCSIDevice *d, uint32_t tag,
+ uint32_t lun, void *hba_private)
{
+ SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
SCSIRequest *req;
SCSIDiskReq *r;
- req = scsi_req_alloc(sizeof(SCSIDiskReq), &s->qdev, tag, lun);
+ req = scsi_req_alloc(sizeof(SCSIDiskReq), &s->qdev, tag, lun, hba_private);
r = DO_UPCAST(SCSIDiskReq, req, req);
r->iov.iov_base = qemu_blockalign(s->bs, SCSI_DMA_BUF_SIZE);
- return r;
+ return req;
}
-static void scsi_remove_request(SCSIDiskReq *r)
+static void scsi_free_request(SCSIRequest *req)
{
- qemu_vfree(r->iov.iov_base);
- scsi_req_free(&r->req);
-}
+ SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-static SCSIDiskReq *scsi_find_request(SCSIDiskState *s, uint32_t tag)
-{
- return DO_UPCAST(SCSIDiskReq, req, scsi_req_find(&s->qdev, tag));
+ qemu_vfree(r->iov.iov_base);
}
static void scsi_disk_clear_sense(SCSIDiskState *s)
memset(&s->sense, 0, sizeof(s->sense));
}
-static void scsi_disk_set_sense(SCSIDiskState *s, uint8_t key)
-{
- s->sense.key = key;
-}
-
-static void scsi_req_set_status(SCSIDiskReq *r, int status, int sense_code)
+static void scsi_req_set_status(SCSIDiskReq *r, int status, SCSISense sense)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
r->req.status = status;
- scsi_disk_set_sense(s, sense_code);
+ s->sense = sense;
}
/* Helper function for command completion. */
-static void scsi_command_complete(SCSIDiskReq *r, int status, int sense)
+static void scsi_command_complete(SCSIDiskReq *r, int status, SCSISense sense)
{
- DPRINTF("Command complete tag=0x%x status=%d sense=%d\n",
- r->req.tag, status, sense);
+ DPRINTF("Command complete tag=0x%x status=%d sense=%d/%d/%d\n",
+ r->req.tag, status, sense.key, sense.asc, sense.ascq);
scsi_req_set_status(r, status, sense);
scsi_req_complete(&r->req);
- scsi_remove_request(r);
}
/* Cancel a pending data transfer. */
-static void scsi_cancel_io(SCSIDevice *d, uint32_t tag)
+static void scsi_cancel_io(SCSIRequest *req)
{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
- SCSIDiskReq *r;
- DPRINTF("Cancel tag=0x%x\n", tag);
- r = scsi_find_request(s, tag);
- if (r) {
- if (r->req.aiocb)
- bdrv_aio_cancel(r->req.aiocb);
- r->req.aiocb = NULL;
- scsi_remove_request(r);
+ SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
+
+ DPRINTF("Cancel tag=0x%x\n", req->tag);
+ if (r->req.aiocb) {
+ bdrv_aio_cancel(r->req.aiocb);
}
+ r->req.aiocb = NULL;
}
static void scsi_read_complete(void * opaque, int ret)
n = r->iov.iov_len / 512;
r->sector += n;
r->sector_count -= n;
- r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, r->iov.iov_len);
+ scsi_req_data(&r->req, r->iov.iov_len);
}
-static void scsi_read_request(SCSIDiskReq *r)
+/* Read more data from scsi device into buffer. */
+static void scsi_read_data(SCSIRequest *req)
{
+ SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
uint32_t n;
if (r->sector_count == (uint32_t)-1) {
DPRINTF("Read buf_len=%zd\n", r->iov.iov_len);
r->sector_count = 0;
- r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, r->iov.iov_len);
+ scsi_req_data(&r->req, r->iov.iov_len);
return;
}
DPRINTF("Read sector_count=%d\n", r->sector_count);
if (r->sector_count == 0) {
- scsi_command_complete(r, GOOD, NO_SENSE);
+ scsi_command_complete(r, GOOD, SENSE_CODE(NO_SENSE));
return;
}
/* No data transfer may already be in progress */
assert(r->req.aiocb == NULL);
+ if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
+ DPRINTF("Data transfer direction invalid\n");
+ scsi_read_complete(r, -EINVAL);
+ return;
+ }
+
n = r->sector_count;
if (n > SCSI_DMA_BUF_SIZE / 512)
n = SCSI_DMA_BUF_SIZE / 512;
}
}
-/* Read more data from scsi device into buffer. */
-static void scsi_read_data(SCSIDevice *d, uint32_t tag)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
- SCSIDiskReq *r;
-
- r = scsi_find_request(s, tag);
- if (!r) {
- BADF("Bad read tag 0x%x\n", tag);
- /* ??? This is the wrong error. */
- scsi_command_complete(r, CHECK_CONDITION, HARDWARE_ERROR);
- return;
- }
-
- scsi_read_request(r);
-}
-
static int scsi_handle_rw_error(SCSIDiskReq *r, int error, int type)
{
int is_read = (type == SCSI_REQ_STATUS_RETRY_READ);
vm_stop(VMSTOP_DISKFULL);
} else {
if (type == SCSI_REQ_STATUS_RETRY_READ) {
- r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, 0);
+ scsi_req_data(&r->req, 0);
+ }
+ switch (error) {
+ case ENOMEM:
+ scsi_command_complete(r, CHECK_CONDITION,
+ SENSE_CODE(TARGET_FAILURE));
+ break;
+ case EINVAL:
+ scsi_command_complete(r, CHECK_CONDITION,
+ SENSE_CODE(INVALID_FIELD));
+ break;
+ default:
+ scsi_command_complete(r, CHECK_CONDITION,
+ SENSE_CODE(IO_ERROR));
+ break;
}
- scsi_command_complete(r, CHECK_CONDITION,
- HARDWARE_ERROR);
bdrv_mon_event(s->bs, BDRV_ACTION_REPORT, is_read);
}
-
return 1;
}
r->sector += n;
r->sector_count -= n;
if (r->sector_count == 0) {
- scsi_command_complete(r, GOOD, NO_SENSE);
+ scsi_command_complete(r, GOOD, SENSE_CODE(NO_SENSE));
} else {
len = r->sector_count * 512;
if (len > SCSI_DMA_BUF_SIZE) {
}
r->iov.iov_len = len;
DPRINTF("Write complete tag=0x%x more=%d\n", r->req.tag, len);
- r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, len);
+ scsi_req_data(&r->req, len);
}
}
-static void scsi_write_request(SCSIDiskReq *r)
+static void scsi_write_data(SCSIRequest *req)
{
+ SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
uint32_t n;
/* No data transfer may already be in progress */
assert(r->req.aiocb == NULL);
+ if (r->req.cmd.mode != SCSI_XFER_TO_DEV) {
+ DPRINTF("Data transfer direction invalid\n");
+ scsi_write_complete(r, -EINVAL);
+ return;
+ }
+
n = r->iov.iov_len / 512;
if (n) {
qemu_iovec_init_external(&r->qiov, &r->iov, 1);
r->req.aiocb = bdrv_aio_writev(s->bs, r->sector, &r->qiov, n,
scsi_write_complete, r);
if (r->req.aiocb == NULL) {
- scsi_write_complete(r, -EIO);
+ scsi_write_complete(r, -ENOMEM);
}
} else {
/* Invoke completion routine to fetch data from host. */
}
}
-/* Write data to a scsi device. Returns nonzero on failure.
- The transfer may complete asynchronously. */
-static int scsi_write_data(SCSIDevice *d, uint32_t tag)
-{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
- SCSIDiskReq *r;
-
- DPRINTF("Write data tag=0x%x\n", tag);
- r = scsi_find_request(s, tag);
- if (!r) {
- BADF("Bad write tag 0x%x\n", tag);
- scsi_command_complete(r, CHECK_CONDITION, HARDWARE_ERROR);
- return 1;
- }
-
- scsi_write_request(r);
-
- return 0;
-}
-
static void scsi_dma_restart_bh(void *opaque)
{
SCSIDiskState *s = opaque;
switch (status & SCSI_REQ_STATUS_RETRY_TYPE_MASK) {
case SCSI_REQ_STATUS_RETRY_READ:
- scsi_read_request(r);
+ scsi_read_data(&r->req);
break;
case SCSI_REQ_STATUS_RETRY_WRITE:
- scsi_write_request(r);
+ scsi_write_data(&r->req);
break;
case SCSI_REQ_STATUS_RETRY_FLUSH:
ret = scsi_disk_emulate_command(r, r->iov.iov_base);
if (ret == 0) {
- scsi_command_complete(r, GOOD, NO_SENSE);
+ scsi_command_complete(r, GOOD, SENSE_CODE(NO_SENSE));
}
}
}
}
/* Return a pointer to the data buffer. */
-static uint8_t *scsi_get_buf(SCSIDevice *d, uint32_t tag)
+static uint8_t *scsi_get_buf(SCSIRequest *req)
{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
- SCSIDiskReq *r;
+ SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
- r = scsi_find_request(s, tag);
- if (!r) {
- BADF("Bad buffer tag 0x%x\n", tag);
- return NULL;
- }
return (uint8_t *)r->iov.iov_base;
}
+/* Copy sense information into the provided buffer */
+static int scsi_get_sense(SCSIRequest *req, uint8_t *outbuf, int len)
+{
+ SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
+
+ return scsi_build_sense(s->sense, outbuf, len, len > 14);
+}
+
static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
"buffer size %zd\n", req->cmd.xfer);
pages = buflen++;
outbuf[buflen++] = 0x00; // list of supported pages (this page)
- outbuf[buflen++] = 0x80; // unit serial number
+ if (s->serial)
+ outbuf[buflen++] = 0x80; // unit serial number
outbuf[buflen++] = 0x83; // device identification
if (s->drive_kind == SCSI_HD) {
outbuf[buflen++] = 0xb0; // block limits
}
case 0x80: /* Device serial number, optional */
{
- int l = strlen(s->serial);
+ int l;
+
+ if (!s->serial) {
+ DPRINTF("Inquiry (EVPD[Serial number] not supported\n");
+ return -1;
+ }
+ l = strlen(s->serial);
if (l > req->cmd.xfer)
l = req->cmd.xfer;
if (l > 20)
memset(outbuf, 0, buflen);
- if (req->lun || req->cmd.buf[1] >> 5) {
+ if (req->lun) {
outbuf[0] = 0x7f; /* LUN not supported */
return buflen;
}
case REQUEST_SENSE:
if (req->cmd.xfer < 4)
goto illegal_request;
- memset(outbuf, 0, 4);
- buflen = 4;
- if (s->sense.key == NOT_READY && req->cmd.xfer >= 18) {
- memset(outbuf, 0, 18);
- buflen = 18;
- outbuf[7] = 10;
- /* asc 0x3a, ascq 0: Medium not present */
- outbuf[12] = 0x3a;
- outbuf[13] = 0;
- }
- outbuf[0] = 0xf0;
- outbuf[1] = 0;
- outbuf[2] = s->sense.key;
+ buflen = scsi_build_sense(s->sense, outbuf, req->cmd.xfer,
+ req->cmd.xfer > 13);
scsi_disk_clear_sense(s);
break;
case INQUIRY:
}
break;
default:
- goto illegal_request;
+ scsi_command_complete(r, CHECK_CONDITION, SENSE_CODE(INVALID_OPCODE));
+ return -1;
}
- scsi_req_set_status(r, GOOD, NO_SENSE);
+ scsi_req_set_status(r, GOOD, SENSE_CODE(NO_SENSE));
return buflen;
not_ready:
- scsi_command_complete(r, CHECK_CONDITION, NOT_READY);
+ if (!bdrv_is_inserted(s->bs)) {
+ scsi_command_complete(r, CHECK_CONDITION, SENSE_CODE(NO_MEDIUM));
+ } else {
+ scsi_command_complete(r, CHECK_CONDITION, SENSE_CODE(LUN_NOT_READY));
+ }
return -1;
illegal_request:
- scsi_command_complete(r, CHECK_CONDITION, ILLEGAL_REQUEST);
+ scsi_command_complete(r, CHECK_CONDITION, SENSE_CODE(INVALID_FIELD));
return -1;
}
(eg. disk reads), negative for transfers to the device (eg. disk writes),
and zero if the command does not transfer any data. */
-static int32_t scsi_send_command(SCSIDevice *d, uint32_t tag,
- uint8_t *buf, int lun)
+static int32_t scsi_send_command(SCSIRequest *req, uint8_t *buf)
{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
- uint32_t len;
- int is_write;
+ SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
+ SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
+ int32_t len;
uint8_t command;
uint8_t *outbuf;
- SCSIDiskReq *r;
int rc;
command = buf[0];
- r = scsi_find_request(s, tag);
- if (r) {
- BADF("Tag 0x%x already in use\n", tag);
- scsi_cancel_io(d, tag);
- }
- /* ??? Tags are not unique for different luns. We only implement a
- single lun, so this should not matter. */
- r = scsi_new_request(s, tag, lun);
outbuf = (uint8_t *)r->iov.iov_base;
- is_write = 0;
- DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", lun, tag, buf[0]);
+ DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", req->lun, req->tag, buf[0]);
if (scsi_req_parse(&r->req, buf) != 0) {
BADF("Unsupported command length, command %x\n", command);
- goto fail;
+ scsi_command_complete(r, CHECK_CONDITION, SENSE_CODE(INVALID_OPCODE));
+ return 0;
}
#ifdef DEBUG_SCSI
{
}
#endif
- if (lun || buf[1] >> 5) {
+ if (req->lun) {
/* Only LUN 0 supported. */
- DPRINTF("Unimplemented LUN %d\n", lun ? lun : buf[1] >> 5);
- if (command != REQUEST_SENSE && command != INQUIRY)
- goto fail;
+ DPRINTF("Unimplemented LUN %d\n", req->lun);
+ if (command != REQUEST_SENSE && command != INQUIRY) {
+ scsi_command_complete(r, CHECK_CONDITION,
+ SENSE_CODE(LUN_NOT_SUPPORTED));
+ return 0;
+ }
}
switch (command) {
case TEST_UNIT_READY:
case READ_10:
case READ_12:
case READ_16:
- len = r->req.cmd.xfer / d->blocksize;
+ len = r->req.cmd.xfer / s->qdev.blocksize;
DPRINTF("Read (sector %" PRId64 ", count %d)\n", r->req.cmd.lba, len);
if (r->req.cmd.lba > s->max_lba)
goto illegal_lba;
case WRITE_VERIFY:
case WRITE_VERIFY_12:
case WRITE_VERIFY_16:
- len = r->req.cmd.xfer / d->blocksize;
+ len = r->req.cmd.xfer / s->qdev.blocksize;
DPRINTF("Write %s(sector %" PRId64 ", count %d)\n",
(command & 0xe) == 0xe ? "And Verify " : "",
r->req.cmd.lba, len);
goto illegal_lba;
r->sector = r->req.cmd.lba * s->cluster_size;
r->sector_count = len * s->cluster_size;
- is_write = 1;
break;
case MODE_SELECT:
DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer);
}
break;
case WRITE_SAME_16:
- len = r->req.cmd.xfer / d->blocksize;
+ len = r->req.cmd.xfer / s->qdev.blocksize;
DPRINTF("WRITE SAME(16) (sector %" PRId64 ", count %d)\n",
r->req.cmd.lba, len);
break;
default:
DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]);
+ scsi_command_complete(r, CHECK_CONDITION, SENSE_CODE(INVALID_OPCODE));
+ return 0;
fail:
- scsi_command_complete(r, CHECK_CONDITION, ILLEGAL_REQUEST);
+ scsi_command_complete(r, CHECK_CONDITION, SENSE_CODE(INVALID_FIELD));
return 0;
illegal_lba:
- scsi_command_complete(r, CHECK_CONDITION, HARDWARE_ERROR);
+ scsi_command_complete(r, CHECK_CONDITION, SENSE_CODE(LBA_OUT_OF_RANGE));
return 0;
}
if (r->sector_count == 0 && r->iov.iov_len == 0) {
- scsi_command_complete(r, GOOD, NO_SENSE);
+ scsi_command_complete(r, GOOD, SENSE_CODE(NO_SENSE));
}
len = r->sector_count * 512 + r->iov.iov_len;
- if (is_write) {
+ if (r->req.cmd.mode == SCSI_XFER_TO_DEV) {
return -len;
} else {
if (!r->sector_count)
}
}
-static void scsi_disk_purge_requests(SCSIDiskState *s)
-{
- SCSIDiskReq *r;
-
- while (!QTAILQ_EMPTY(&s->qdev.requests)) {
- r = DO_UPCAST(SCSIDiskReq, req, QTAILQ_FIRST(&s->qdev.requests));
- if (r->req.aiocb) {
- bdrv_aio_cancel(r->req.aiocb);
- }
- scsi_remove_request(r);
- }
-}
-
static void scsi_disk_reset(DeviceState *dev)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev.qdev, dev);
uint64_t nb_sectors;
- scsi_disk_purge_requests(s);
+ scsi_device_purge_requests(&s->qdev);
bdrv_get_geometry(s->bs, &nb_sectors);
nb_sectors /= s->cluster_size;
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
- scsi_disk_purge_requests(s);
+ scsi_device_purge_requests(&s->qdev);
blockdev_mark_auto_del(s->qdev.conf.bs);
}
if (!s->serial) {
/* try to fall back to value set with legacy -drive serial=... */
dinfo = drive_get_by_blockdev(s->bs);
- s->serial = qemu_strdup(*dinfo->serial ? dinfo->serial : "0");
+ if (*dinfo->serial) {
+ s->serial = qemu_strdup(dinfo->serial);
+ }
}
if (!s->version) {
.qdev.reset = scsi_disk_reset,
.init = scsi_hd_initfn,
.destroy = scsi_destroy,
+ .alloc_req = scsi_new_request,
+ .free_req = scsi_free_request,
.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,
+ .get_sense = scsi_get_sense,
.qdev.props = (Property[]) {
DEFINE_SCSI_DISK_PROPERTIES(),
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false),
.qdev.reset = scsi_disk_reset,
.init = scsi_cd_initfn,
.destroy = scsi_destroy,
+ .alloc_req = scsi_new_request,
+ .free_req = scsi_free_request,
.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,
+ .get_sense = scsi_get_sense,
.qdev.props = (Property[]) {
DEFINE_SCSI_DISK_PROPERTIES(),
DEFINE_PROP_END_OF_LIST(),
.qdev.reset = scsi_disk_reset,
.init = scsi_disk_initfn,
.destroy = scsi_destroy,
+ .alloc_req = scsi_new_request,
+ .free_req = scsi_free_request,
.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,
+ .get_sense = scsi_get_sense,
.qdev.props = (Property[]) {
DEFINE_SCSI_DISK_PROPERTIES(),
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false),
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