* 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
#define SCSI_DMA_BUF_SIZE 131072
#define SCSI_MAX_INQUIRY_LEN 256
-#define SCSI_REQ_STATUS_RETRY 0x01
+#define SCSI_REQ_STATUS_RETRY 0x01
+#define SCSI_REQ_STATUS_RETRY_TYPE_MASK 0x06
+#define SCSI_REQ_STATUS_RETRY_READ 0x00
+#define SCSI_REQ_STATUS_RETRY_WRITE 0x02
+#define SCSI_REQ_STATUS_RETRY_FLUSH 0x04
typedef struct SCSIDiskState SCSIDiskState;
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;
/* The qemu block layer uses a fixed 512 byte sector size.
This is the number of 512 byte blocks in a single scsi sector. */
int cluster_size;
+ uint32_t removable;
uint64_t max_lba;
QEMUBH *bh;
char *version;
char *serial;
};
-static SCSIDiskReq *scsi_new_request(SCSIDiskState *s, uint32_t tag,
- uint32_t lun)
-{
- SCSIRequest *req;
- SCSIDiskReq *r;
-
- req = scsi_req_alloc(sizeof(SCSIDiskReq), &s->qdev, tag, lun);
- r = DO_UPCAST(SCSIDiskReq, req, req);
- r->iov.iov_base = qemu_blockalign(s->bs, SCSI_DMA_BUF_SIZE);
- return r;
-}
-
-static void scsi_remove_request(SCSIDiskReq *r)
-{
- qemu_vfree(r->iov.iov_base);
- scsi_req_free(&r->req);
-}
+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_find_request(SCSIDiskState *s, uint32_t tag)
+static void scsi_free_request(SCSIRequest *req)
{
- return DO_UPCAST(SCSIDiskReq, req, scsi_req_find(&s->qdev, tag));
-}
+ SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
-static void scsi_req_set_status(SCSIRequest *req, int status, int sense_code)
-{
- req->status = status;
- scsi_dev_set_sense(req->dev, sense_code);
+ qemu_vfree(r->iov.iov_base);
}
-/* Helper function for command completion. */
-static void scsi_command_complete(SCSIDiskReq *r, int status, int sense)
+/* Helper function for command completion with sense. */
+static void scsi_check_condition(SCSIDiskReq *r, SCSISense sense)
{
- DPRINTF("Command complete tag=0x%x status=%d sense=%d\n",
- r->req.tag, status, sense);
- scsi_req_set_status(&r->req, status, sense);
- scsi_req_complete(&r->req);
- scsi_remove_request(r);
+ DPRINTF("Command complete tag=0x%x sense=%d/%d/%d\n",
+ r->req.tag, sense.key, sense.asc, sense.ascq);
+ scsi_req_build_sense(&r->req, sense);
+ scsi_req_complete(&r->req, CHECK_CONDITION);
}
/* 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)
{
SCSIDiskReq *r = (SCSIDiskReq *)opaque;
+ int n;
r->req.aiocb = NULL;
if (ret) {
- DPRINTF("IO error\n");
- r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, 0);
- scsi_command_complete(r, CHECK_CONDITION, NO_SENSE);
- return;
+ if (scsi_handle_rw_error(r, -ret, SCSI_REQ_STATUS_RETRY_READ)) {
+ return;
+ }
}
+
DPRINTF("Data ready tag=0x%x len=%zd\n", r->req.tag, r->iov.iov_len);
- r->req.bus->complete(r->req.bus, SCSI_REASON_DATA, r->req.tag, r->iov.iov_len);
+ n = r->iov.iov_len / 512;
+ r->sector += n;
+ r->sector_count -= n;
+ scsi_req_data(&r->req, r->iov.iov_len);
}
+
/* Read more data from scsi device into buffer. */
-static void scsi_read_data(SCSIDevice *d, uint32_t tag)
+static void scsi_read_data(SCSIRequest *req)
{
- SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, d);
- SCSIDiskReq *r;
+ SCSIDiskReq *r = DO_UPCAST(SCSIDiskReq, req, req);
+ SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
uint32_t n;
- 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;
- }
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);
+ /* This also clears the sense buffer for REQUEST SENSE. */
+ scsi_req_complete(&r->req, GOOD);
+ 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;
}
qemu_iovec_init_external(&r->qiov, &r->iov, 1);
r->req.aiocb = bdrv_aio_readv(s->bs, r->sector, &r->qiov, n,
scsi_read_complete, r);
- if (r->req.aiocb == NULL)
- scsi_command_complete(r, CHECK_CONDITION, HARDWARE_ERROR);
- r->sector += n;
- r->sector_count -= n;
+ if (r->req.aiocb == NULL) {
+ scsi_read_complete(r, -EIO);
+ }
}
-static int scsi_handle_write_error(SCSIDiskReq *r, int error)
+static int scsi_handle_rw_error(SCSIDiskReq *r, int error, int type)
{
+ int is_read = (type == SCSI_REQ_STATUS_RETRY_READ);
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev);
- BlockErrorAction action = bdrv_get_on_error(s->bs, 0);
+ BlockErrorAction action = bdrv_get_on_error(s->bs, is_read);
if (action == BLOCK_ERR_IGNORE) {
- bdrv_mon_event(s->bs, BDRV_ACTION_IGNORE, 0);
+ bdrv_mon_event(s->bs, BDRV_ACTION_IGNORE, is_read);
return 0;
}
if ((error == ENOSPC && action == BLOCK_ERR_STOP_ENOSPC)
|| action == BLOCK_ERR_STOP_ANY) {
- r->status |= SCSI_REQ_STATUS_RETRY;
- bdrv_mon_event(s->bs, BDRV_ACTION_STOP, 0);
- vm_stop(0);
+
+ type &= SCSI_REQ_STATUS_RETRY_TYPE_MASK;
+ r->status |= SCSI_REQ_STATUS_RETRY | type;
+
+ bdrv_mon_event(s->bs, BDRV_ACTION_STOP, is_read);
+ vm_stop(VMSTOP_DISKFULL);
} else {
- scsi_command_complete(r, CHECK_CONDITION,
- HARDWARE_ERROR);
- bdrv_mon_event(s->bs, BDRV_ACTION_REPORT, 0);
+ switch (error) {
+ case ENOMEM:
+ scsi_check_condition(r, SENSE_CODE(TARGET_FAILURE));
+ break;
+ case EINVAL:
+ scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
+ break;
+ default:
+ scsi_check_condition(r, SENSE_CODE(IO_ERROR));
+ break;
+ }
+ bdrv_mon_event(s->bs, BDRV_ACTION_REPORT, is_read);
}
-
return 1;
}
r->req.aiocb = NULL;
if (ret) {
- if (scsi_handle_write_error(r, -ret))
+ if (scsi_handle_rw_error(r, -ret, SCSI_REQ_STATUS_RETRY_WRITE)) {
return;
+ }
}
n = r->iov.iov_len / 512;
r->sector += n;
r->sector_count -= n;
if (r->sector_count == 0) {
- scsi_command_complete(r, GOOD, NO_SENSE);
+ scsi_req_complete(&r->req, GOOD);
} 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_command_complete(r, CHECK_CONDITION,
- HARDWARE_ERROR);
+ if (r->req.aiocb == NULL) {
+ scsi_write_complete(r, -ENOMEM);
+ }
} else {
/* Invoke completion routine to fetch data from host. */
scsi_write_complete(r, 0);
}
}
-/* 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;
- }
-
- if (r->req.aiocb)
- BADF("Data transfer already in progress\n");
-
- scsi_write_request(r);
-
- return 0;
-}
-
static void scsi_dma_restart_bh(void *opaque)
{
SCSIDiskState *s = opaque;
QTAILQ_FOREACH(req, &s->qdev.requests, next) {
r = DO_UPCAST(SCSIDiskReq, req, req);
if (r->status & SCSI_REQ_STATUS_RETRY) {
- r->status &= ~SCSI_REQ_STATUS_RETRY;
- scsi_write_request(r);
+ int status = r->status;
+ int ret;
+
+ r->status &=
+ ~(SCSI_REQ_STATUS_RETRY | SCSI_REQ_STATUS_RETRY_TYPE_MASK);
+
+ switch (status & SCSI_REQ_STATUS_RETRY_TYPE_MASK) {
+ case SCSI_REQ_STATUS_RETRY_READ:
+ scsi_read_data(&r->req);
+ break;
+ case SCSI_REQ_STATUS_RETRY_WRITE:
+ 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_req_complete(&r->req, GOOD);
+ }
+ }
}
}
}
}
/* 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;
}
return -1;
}
- if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
+ if (s->qdev.type == TYPE_ROM) {
outbuf[buflen++] = 5;
} else {
outbuf[buflen++] = 0;
switch (page_code) {
case 0x00: /* Supported page codes, mandatory */
+ {
+ int pages;
DPRINTF("Inquiry EVPD[Supported pages] "
"buffer size %zd\n", req->cmd.xfer);
- outbuf[buflen++] = 4; // number of pages
+ 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
- outbuf[buflen++] = 0xb0; // block device characteristics
+ if (s->qdev.type == TYPE_DISK) {
+ outbuf[buflen++] = 0xb0; // block limits
+ outbuf[buflen++] = 0xb2; // thin provisioning
+ }
+ outbuf[pages] = buflen - pages - 1; // number of pages
break;
-
+ }
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)
DPRINTF("Inquiry EVPD[Device identification] "
"buffer size %zd\n", req->cmd.xfer);
- outbuf[buflen++] = 3 + id_len;
+ outbuf[buflen++] = 4 + id_len;
outbuf[buflen++] = 0x2; // ASCII
outbuf[buflen++] = 0; // not officially assigned
outbuf[buflen++] = 0; // reserved
buflen += id_len;
break;
}
- case 0xb0: /* block device characteristics */
+ case 0xb0: /* block limits */
{
+ unsigned int unmap_sectors =
+ s->qdev.conf.discard_granularity / s->qdev.blocksize;
unsigned int min_io_size =
s->qdev.conf.min_io_size / s->qdev.blocksize;
unsigned int opt_io_size =
s->qdev.conf.opt_io_size / s->qdev.blocksize;
+ if (s->qdev.type == TYPE_ROM) {
+ DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
+ page_code);
+ return -1;
+ }
/* required VPD size with unmap support */
outbuf[3] = buflen = 0x3c;
outbuf[13] = (opt_io_size >> 16) & 0xff;
outbuf[14] = (opt_io_size >> 8) & 0xff;
outbuf[15] = opt_io_size & 0xff;
+
+ /* optimal unmap granularity */
+ outbuf[28] = (unmap_sectors >> 24) & 0xff;
+ outbuf[29] = (unmap_sectors >> 16) & 0xff;
+ outbuf[30] = (unmap_sectors >> 8) & 0xff;
+ outbuf[31] = unmap_sectors & 0xff;
+ break;
+ }
+ case 0xb2: /* thin provisioning */
+ {
+ outbuf[3] = buflen = 8;
+ outbuf[4] = 0;
+ outbuf[5] = 0x40; /* write same with unmap supported */
+ outbuf[6] = 0;
+ outbuf[7] = 0;
break;
}
default:
memset(outbuf, 0, buflen);
- if (req->lun || req->cmd.buf[1] >> 5) {
- outbuf[0] = 0x7f; /* LUN not supported */
- return buflen;
- }
-
- if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
- outbuf[0] = 5;
+ outbuf[0] = s->qdev.type & 0x1f;
+ if (s->qdev.type == TYPE_ROM) {
outbuf[1] = 0x80;
memcpy(&outbuf[16], "QEMU CD-ROM ", 16);
} else {
- outbuf[0] = 0;
+ outbuf[1] = s->removable ? 0x80 : 0;
memcpy(&outbuf[16], "QEMU HARDDISK ", 16);
}
memcpy(&outbuf[8], "QEMU ", 8);
return p[1] + 2;
case 0x2a: /* CD Capabilities and Mechanical Status page. */
- if (bdrv_get_type_hint(bdrv) != BDRV_TYPE_CDROM)
+ if (s->qdev.type != TYPE_ROM)
return 0;
p[0] = 0x2a;
p[1] = 0x14;
return toclen;
}
-static int scsi_disk_emulate_command(SCSIRequest *req, uint8_t *outbuf)
+static int scsi_disk_emulate_command(SCSIDiskReq *r, uint8_t *outbuf)
{
+ SCSIRequest *req = &r->req;
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, req->dev);
uint64_t nb_sectors;
int buflen = 0;
+ int ret;
switch (req->cmd.buf[0]) {
case TEST_UNIT_READY:
if (!bdrv_is_inserted(s->bs))
goto not_ready;
- break;
- case REQUEST_SENSE:
- if (req->cmd.xfer < 4)
- goto illegal_request;
- memset(outbuf, 0, 4);
- buflen = 4;
- if (req->dev->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] = req->dev->sense.key;
- scsi_dev_clear_sense(req->dev);
break;
case INQUIRY:
buflen = scsi_disk_emulate_inquiry(req, outbuf);
if (buflen < 0)
goto illegal_request;
- break;
+ break;
case MODE_SENSE:
case MODE_SENSE_10:
buflen = scsi_disk_emulate_mode_sense(req, outbuf);
goto illegal_request;
break;
case START_STOP:
- if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM && (req->cmd.buf[4] & 2)) {
+ if (s->qdev.type == TYPE_ROM && (req->cmd.buf[4] & 2)) {
/* load/eject medium */
bdrv_eject(s->bs, !(req->cmd.buf[4] & 1));
}
- break;
+ break;
case ALLOW_MEDIUM_REMOVAL:
bdrv_set_locked(s->bs, req->cmd.buf[4] & 1);
- break;
- case READ_CAPACITY:
+ break;
+ case READ_CAPACITY_10:
/* The normal LEN field for this command is zero. */
- memset(outbuf, 0, 8);
- bdrv_get_geometry(s->bs, &nb_sectors);
+ memset(outbuf, 0, 8);
+ bdrv_get_geometry(s->bs, &nb_sectors);
if (!nb_sectors)
goto not_ready;
nb_sectors /= s->cluster_size;
outbuf[6] = s->cluster_size * 2;
outbuf[7] = 0;
buflen = 8;
- break;
+ break;
case SYNCHRONIZE_CACHE:
- bdrv_flush(s->bs);
+ ret = bdrv_flush(s->bs);
+ if (ret < 0) {
+ if (scsi_handle_rw_error(r, -ret, SCSI_REQ_STATUS_RETRY_FLUSH)) {
+ return -1;
+ }
+ }
break;
case GET_CONFIGURATION:
memset(outbuf, 0, 8);
outbuf[11] = 0;
outbuf[12] = 0;
outbuf[13] = get_physical_block_exp(&s->qdev.conf);
+
+ /* set TPE bit if the format supports discard */
+ if (s->qdev.conf.discard_granularity) {
+ outbuf[14] = 0x80;
+ }
+
/* Protection, exponent and lowest lba field left blank. */
buflen = req->cmd.xfer;
break;
}
DPRINTF("Unsupported Service Action In\n");
goto illegal_request;
- case REPORT_LUNS:
- if (req->cmd.xfer < 16)
- goto illegal_request;
- memset(outbuf, 0, 16);
- outbuf[3] = 8;
- buflen = 16;
- break;
- case VERIFY:
- break;
- case REZERO_UNIT:
- DPRINTF("Rezero Unit\n");
- if (!bdrv_is_inserted(s->bs)) {
- goto not_ready;
- }
+ case VERIFY_10:
break;
default:
- goto illegal_request;
+ scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE));
+ return -1;
}
- scsi_req_set_status(req, GOOD, NO_SENSE);
return buflen;
not_ready:
- scsi_req_set_status(req, CHECK_CONDITION, NOT_READY);
- return 0;
+ if (!bdrv_is_inserted(s->bs)) {
+ scsi_check_condition(r, SENSE_CODE(NO_MEDIUM));
+ } else {
+ scsi_check_condition(r, SENSE_CODE(LUN_NOT_READY));
+ }
+ return -1;
illegal_request:
- scsi_req_set_status(req, CHECK_CONDITION, ILLEGAL_REQUEST);
- return 0;
+ scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
+ return -1;
}
/* Execute a scsi command. Returns the length of the data expected by the
(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);
- uint64_t lba;
- uint32_t len;
- int cmdlen;
- 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]);
- switch (command >> 5) {
- case 0:
- lba = (uint64_t) buf[3] | ((uint64_t) buf[2] << 8) |
- (((uint64_t) buf[1] & 0x1f) << 16);
- len = buf[4];
- cmdlen = 6;
- break;
- case 1:
- case 2:
- lba = (uint64_t) buf[5] | ((uint64_t) buf[4] << 8) |
- ((uint64_t) buf[3] << 16) | ((uint64_t) buf[2] << 24);
- len = buf[8] | (buf[7] << 8);
- cmdlen = 10;
- break;
- case 4:
- lba = (uint64_t) buf[9] | ((uint64_t) buf[8] << 8) |
- ((uint64_t) buf[7] << 16) | ((uint64_t) buf[6] << 24) |
- ((uint64_t) buf[5] << 32) | ((uint64_t) buf[4] << 40) |
- ((uint64_t) buf[3] << 48) | ((uint64_t) buf[2] << 56);
- len = buf[13] | (buf[12] << 8) | (buf[11] << 16) | (buf[10] << 24);
- cmdlen = 16;
- break;
- case 5:
- lba = (uint64_t) buf[5] | ((uint64_t) buf[4] << 8) |
- ((uint64_t) buf[3] << 16) | ((uint64_t) buf[2] << 24);
- len = buf[9] | (buf[8] << 8) | (buf[7] << 16) | (buf[6] << 24);
- cmdlen = 12;
- break;
- default:
- BADF("Unsupported command length, command %x\n", command);
- goto fail;
- }
+ DPRINTF("Command: lun=%d tag=0x%x data=0x%02x", req->lun, req->tag, buf[0]);
+
#ifdef DEBUG_SCSI
{
int i;
- for (i = 1; i < cmdlen; i++) {
+ for (i = 1; i < r->req.cmd.len; i++) {
printf(" 0x%02x", buf[i]);
}
printf("\n");
}
#endif
- if (scsi_req_parse(&r->req, buf) != 0) {
- BADF("Unsupported command length, command %x\n", command);
- goto fail;
- }
- assert(r->req.cmd.len == cmdlen);
- assert(r->req.cmd.lba == lba);
-
- if (lun || buf[1] >> 5) {
- /* Only LUN 0 supported. */
- DPRINTF("Unimplemented LUN %d\n", lun ? lun : buf[1] >> 5);
- if (command != REQUEST_SENSE && command != INQUIRY)
- goto fail;
- }
switch (command) {
case TEST_UNIT_READY:
- case REQUEST_SENSE:
case INQUIRY:
case MODE_SENSE:
case MODE_SENSE_10:
case RELEASE_10:
case START_STOP:
case ALLOW_MEDIUM_REMOVAL:
- case READ_CAPACITY:
+ case READ_CAPACITY_10:
case SYNCHRONIZE_CACHE:
case READ_TOC:
case GET_CONFIGURATION:
case SERVICE_ACTION_IN:
- case REPORT_LUNS:
- case VERIFY:
- case REZERO_UNIT:
- rc = scsi_disk_emulate_command(&r->req, outbuf);
- if (rc > 0) {
- r->iov.iov_len = rc;
- } else {
- scsi_req_complete(&r->req);
- scsi_remove_request(r);
+ case VERIFY_10:
+ rc = scsi_disk_emulate_command(r, outbuf);
+ if (rc < 0) {
return 0;
}
+
+ r->iov.iov_len = rc;
break;
case READ_6:
case READ_10:
case READ_12:
case READ_16:
- DPRINTF("Read (sector %" PRId64 ", count %d)\n", lba, len);
- if (lba > s->max_lba)
+ 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;
- r->sector = lba * s->cluster_size;
+ r->sector = r->req.cmd.lba * s->cluster_size;
r->sector_count = len * s->cluster_size;
break;
case WRITE_6:
case WRITE_10:
case WRITE_12:
case WRITE_16:
- case WRITE_VERIFY:
+ case WRITE_VERIFY_10:
case WRITE_VERIFY_12:
case WRITE_VERIFY_16:
+ len = r->req.cmd.xfer / s->qdev.blocksize;
DPRINTF("Write %s(sector %" PRId64 ", count %d)\n",
- (command & 0xe) == 0xe ? "And Verify " : "", lba, len);
- if (lba > s->max_lba)
+ (command & 0xe) == 0xe ? "And Verify " : "",
+ r->req.cmd.lba, len);
+ if (r->req.cmd.lba > s->max_lba)
goto illegal_lba;
- r->sector = lba * s->cluster_size;
+ 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 %d)\n", len);
+ DPRINTF("Mode Select(6) (len %lu)\n", (long)r->req.cmd.xfer);
/* We don't support mode parameter changes.
Allow the mode parameter header + block descriptors only. */
- if (len > 12) {
+ if (r->req.cmd.xfer > 12) {
goto fail;
}
break;
case MODE_SELECT_10:
- DPRINTF("Mode Select(10) (len %d)\n", len);
+ DPRINTF("Mode Select(10) (len %lu)\n", (long)r->req.cmd.xfer);
/* We don't support mode parameter changes.
Allow the mode parameter header + block descriptors only. */
- if (len > 16) {
+ if (r->req.cmd.xfer > 16) {
goto fail;
}
break;
case SEEK_6:
case SEEK_10:
- DPRINTF("Seek(%d) (sector %" PRId64 ")\n", command == SEEK_6 ? 6 : 10, lba);
- if (lba > s->max_lba) {
+ DPRINTF("Seek(%d) (sector %" PRId64 ")\n", command == SEEK_6 ? 6 : 10,
+ r->req.cmd.lba);
+ if (r->req.cmd.lba > s->max_lba) {
goto illegal_lba;
}
break;
+ case WRITE_SAME_16:
+ len = r->req.cmd.xfer / s->qdev.blocksize;
+
+ DPRINTF("WRITE SAME(16) (sector %" PRId64 ", count %d)\n",
+ r->req.cmd.lba, len);
+
+ if (r->req.cmd.lba > s->max_lba) {
+ goto illegal_lba;
+ }
+
+ /*
+ * We only support WRITE SAME with the unmap bit set for now.
+ */
+ if (!(buf[1] & 0x8)) {
+ goto fail;
+ }
+
+ rc = bdrv_discard(s->bs, r->req.cmd.lba * s->cluster_size,
+ len * s->cluster_size);
+ if (rc < 0) {
+ /* XXX: better error code ?*/
+ goto fail;
+ }
+
+ break;
+ case REQUEST_SENSE:
+ abort();
default:
- DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]);
+ DPRINTF("Unknown SCSI command (%2.2x)\n", buf[0]);
+ scsi_check_condition(r, SENSE_CODE(INVALID_OPCODE));
+ return 0;
fail:
- scsi_command_complete(r, CHECK_CONDITION, ILLEGAL_REQUEST);
- return 0;
+ scsi_check_condition(r, SENSE_CODE(INVALID_FIELD));
+ return 0;
illegal_lba:
- scsi_command_complete(r, CHECK_CONDITION, HARDWARE_ERROR);
+ scsi_check_condition(r, 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_req_complete(&r->req, GOOD);
}
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, SENSE_CODE(RESET));
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, SENSE_CODE(NO_SENSE));
blockdev_mark_auto_del(s->qdev.conf.bs);
}
-static int scsi_disk_initfn(SCSIDevice *dev)
+static int scsi_initfn(SCSIDevice *dev, uint8_t scsi_type)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
- int is_cd;
DriveInfo *dinfo;
if (!s->qdev.conf.bs) {
return -1;
}
s->bs = s->qdev.conf.bs;
- is_cd = bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM;
- if (!is_cd && !bdrv_is_inserted(s->bs)) {
+ if (scsi_type == TYPE_DISK && !bdrv_is_inserted(s->bs)) {
error_report("Device needs media, but drive is empty");
return -1;
}
- if (bdrv_get_on_error(s->bs, 1) != BLOCK_ERR_REPORT) {
- error_report("Device doesn't support drive option rerror");
- return -1;
- }
-
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 = g_strdup(dinfo->serial);
+ }
}
if (!s->version) {
- s->version = qemu_strdup(QEMU_VERSION);
+ s->version = g_strdup(QEMU_VERSION);
}
if (bdrv_is_sg(s->bs)) {
return -1;
}
- if (is_cd) {
+ if (scsi_type == TYPE_ROM) {
s->qdev.blocksize = 2048;
- } else {
+ } else if (scsi_type == TYPE_DISK) {
s->qdev.blocksize = s->qdev.conf.logical_block_size;
+ } else {
+ error_report("scsi-disk: Unhandled SCSI type %02x", scsi_type);
+ return -1;
}
s->cluster_size = s->qdev.blocksize / 512;
s->bs->buffer_alignment = s->qdev.blocksize;
- s->qdev.type = TYPE_DISK;
+ s->qdev.type = scsi_type;
qemu_add_vm_change_state_handler(scsi_dma_restart_cb, s);
- bdrv_set_removable(s->bs, is_cd);
+ bdrv_set_removable(s->bs, scsi_type == TYPE_ROM);
+ add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, ",0");
return 0;
}
-static SCSIDeviceInfo scsi_disk_info = {
- .qdev.name = "scsi-disk",
- .qdev.desc = "virtual scsi disk or cdrom",
- .qdev.size = sizeof(SCSIDiskState),
- .qdev.reset = scsi_disk_reset,
- .init = scsi_disk_initfn,
- .destroy = scsi_destroy,
+static int scsi_hd_initfn(SCSIDevice *dev)
+{
+ return scsi_initfn(dev, TYPE_DISK);
+}
+
+static int scsi_cd_initfn(SCSIDevice *dev)
+{
+ return scsi_initfn(dev, TYPE_ROM);
+}
+
+static int scsi_disk_initfn(SCSIDevice *dev)
+{
+ DriveInfo *dinfo;
+ uint8_t scsi_type;
+
+ if (!dev->conf.bs) {
+ scsi_type = TYPE_DISK; /* will die in scsi_initfn() */
+ } else {
+ dinfo = drive_get_by_blockdev(dev->conf.bs);
+ scsi_type = dinfo->media_cd ? TYPE_ROM : TYPE_DISK;
+ }
+
+ return scsi_initfn(dev, scsi_type);
+}
+
+static SCSIReqOps scsi_disk_reqops = {
+ .size = sizeof(SCSIDiskReq),
+ .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,
- .qdev.props = (Property[]) {
- DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf),
- DEFINE_PROP_STRING("ver", SCSIDiskState, version),
- DEFINE_PROP_STRING("serial", SCSIDiskState, serial),
- DEFINE_PROP_END_OF_LIST(),
- },
+};
+
+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(&scsi_disk_reqops, &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 req;
+}
+
+#define DEFINE_SCSI_DISK_PROPERTIES() \
+ DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf), \
+ DEFINE_PROP_STRING("ver", SCSIDiskState, version), \
+ DEFINE_PROP_STRING("serial", SCSIDiskState, serial)
+
+static SCSIDeviceInfo scsi_disk_info[] = {
+ {
+ .qdev.name = "scsi-hd",
+ .qdev.fw_name = "disk",
+ .qdev.desc = "virtual SCSI disk",
+ .qdev.size = sizeof(SCSIDiskState),
+ .qdev.reset = scsi_disk_reset,
+ .init = scsi_hd_initfn,
+ .destroy = scsi_destroy,
+ .alloc_req = scsi_new_request,
+ .qdev.props = (Property[]) {
+ DEFINE_SCSI_DISK_PROPERTIES(),
+ DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false),
+ DEFINE_PROP_END_OF_LIST(),
+ }
+ },{
+ .qdev.name = "scsi-cd",
+ .qdev.fw_name = "disk",
+ .qdev.desc = "virtual SCSI CD-ROM",
+ .qdev.size = sizeof(SCSIDiskState),
+ .qdev.reset = scsi_disk_reset,
+ .init = scsi_cd_initfn,
+ .destroy = scsi_destroy,
+ .alloc_req = scsi_new_request,
+ .qdev.props = (Property[]) {
+ DEFINE_SCSI_DISK_PROPERTIES(),
+ DEFINE_PROP_END_OF_LIST(),
+ },
+ },{
+ .qdev.name = "scsi-disk", /* legacy -device scsi-disk */
+ .qdev.fw_name = "disk",
+ .qdev.desc = "virtual SCSI disk or CD-ROM (legacy)",
+ .qdev.size = sizeof(SCSIDiskState),
+ .qdev.reset = scsi_disk_reset,
+ .init = scsi_disk_initfn,
+ .destroy = scsi_destroy,
+ .alloc_req = scsi_new_request,
+ .qdev.props = (Property[]) {
+ DEFINE_SCSI_DISK_PROPERTIES(),
+ DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false),
+ DEFINE_PROP_END_OF_LIST(),
+ }
+ }
};
static void scsi_disk_register_devices(void)
{
- scsi_qdev_register(&scsi_disk_info);
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(scsi_disk_info); i++) {
+ scsi_qdev_register(&scsi_disk_info[i]);
+ }
}
device_init(scsi_disk_register_devices)
projects / qemu.git / blobdiff