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scsi: Split qdev "scsi-disk" into "scsi-hd" and "scsi-cd" 

A "scsi-disk" is either a hard disk or a CD-ROM, depending on the
associated BlockDriverState's type hint.  Unclean; disk vs. CD belongs
to the guest part, not the host part.

Have separate qdevs "scsi-hd" and "scsi-cd" to model disk vs. CD in
the guest part.

Keep scsi-disk for backward compatibility.

Don't copy scsi-disk property removable to scsi-cd.  It's not used and
always zero(!) there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Markus Armbruster 2011-05-16 15:04:53 +02:00 committed by Kevin Wolf
parent 1f56e32a7f
commit b443ae6713
1 changed files with 103 additions and 33 deletions
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136
hw/scsi-disk.c
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@ -65,6 +65,8 @@ typedef struct SCSIDiskReq {
uint32_t status;
} SCSIDiskReq;
typedef enum { SCSI_HD, SCSI_CD } SCSIDriveKind;
struct SCSIDiskState
{
SCSIDevice qdev;
@ -78,6 +80,7 @@ struct SCSIDiskState
char *version;
char *serial;
SCSISense sense;
SCSIDriveKind drive_kind;
};
static int scsi_handle_rw_error(SCSIDiskReq *r, int error, int type);
@ -406,7 +409,7 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
return -1;
}
if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
if (s->drive_kind == SCSI_CD) {
outbuf[buflen++] = 5;
} else {
outbuf[buflen++] = 0;
@ -424,7 +427,7 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
outbuf[buflen++] = 0x00; // list of supported pages (this page)
outbuf[buflen++] = 0x80; // unit serial number
outbuf[buflen++] = 0x83; // device identification
if (bdrv_get_type_hint(s->bs) != BDRV_TYPE_CDROM) {
if (s->drive_kind == SCSI_HD) {
outbuf[buflen++] = 0xb0; // block limits
outbuf[buflen++] = 0xb2; // thin provisioning
}
@ -477,7 +480,7 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
unsigned int opt_io_size =
s->qdev.conf.opt_io_size / s->qdev.blocksize;
if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
if (s->drive_kind == SCSI_CD) {
DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
page_code);
return -1;
@ -547,7 +550,7 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
return buflen;
}
if (bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM) {
if (s->drive_kind == SCSI_CD) {
outbuf[0] = 5;
outbuf[1] = 0x80;
memcpy(&outbuf[16], "QEMU CD-ROM ", 16);
@ -678,7 +681,7 @@ static int mode_sense_page(SCSIRequest *req, int page, uint8_t *p,
return p[1] + 2;
case 0x2a: /* CD Capabilities and Mechanical Status page. */
if (bdrv_get_type_hint(bdrv) != BDRV_TYPE_CDROM)
if (s->drive_kind != SCSI_CD)
return 0;
p[0] = 0x2a;
p[1] = 0x14;
@ -905,7 +908,7 @@ static int scsi_disk_emulate_command(SCSIDiskReq *r, uint8_t *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->drive_kind == SCSI_CD && (req->cmd.buf[4] & 2)) {
/* load/eject medium */
bdrv_eject(s->bs, !(req->cmd.buf[4] & 1));
}
@ -1232,10 +1235,9 @@ static void scsi_destroy(SCSIDevice *dev)
blockdev_mark_auto_del(s->qdev.conf.bs);
}
static int scsi_disk_initfn(SCSIDevice *dev)
static int scsi_initfn(SCSIDevice *dev, SCSIDriveKind kind)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
int is_cd;
DriveInfo *dinfo;
if (!s->qdev.conf.bs) {
@ -1243,9 +1245,9 @@ static int scsi_disk_initfn(SCSIDevice *dev)
return -1;
}
s->bs = s->qdev.conf.bs;
is_cd = bdrv_get_type_hint(s->bs) == BDRV_TYPE_CDROM;
s->drive_kind = kind;
if (!is_cd && !bdrv_is_inserted(s->bs)) {
if (kind == SCSI_HD && !bdrv_is_inserted(s->bs)) {
error_report("Device needs media, but drive is empty");
return -1;
}
@ -1265,7 +1267,7 @@ static int scsi_disk_initfn(SCSIDevice *dev)
return -1;
}
if (is_cd) {
if (kind == SCSI_CD) {
s->qdev.blocksize = 2048;
} else {
s->qdev.blocksize = s->qdev.conf.logical_block_size;
@ -1275,35 +1277,103 @@ static int scsi_disk_initfn(SCSIDevice *dev)
s->qdev.type = TYPE_DISK;
qemu_add_vm_change_state_handler(scsi_dma_restart_cb, s);
bdrv_set_removable(s->bs, is_cd);
bdrv_set_removable(s->bs, kind == SCSI_CD);
add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, ",0");
return 0;
}
static SCSIDeviceInfo scsi_disk_info = {
.qdev.name = "scsi-disk",
.qdev.fw_name = "disk",
.qdev.desc = "virtual scsi disk or cdrom",
.qdev.size = sizeof(SCSIDiskState),
.qdev.reset = scsi_disk_reset,
.init = scsi_disk_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_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf),
DEFINE_PROP_STRING("ver", SCSIDiskState, version),
DEFINE_PROP_STRING("serial", SCSIDiskState, serial),
DEFINE_PROP_BIT("removable", SCSIDiskState, removable, 0, false),
DEFINE_PROP_END_OF_LIST(),
},
static int scsi_hd_initfn(SCSIDevice *dev)
{
return scsi_initfn(dev, SCSI_HD);
}
static int scsi_cd_initfn(SCSIDevice *dev)
{
return scsi_initfn(dev, SCSI_CD);
}
static int scsi_disk_initfn(SCSIDevice *dev)
{
SCSIDriveKind kind;
if (!dev->conf.bs) {
kind = SCSI_HD; /* will die in scsi_initfn() */
} else {
kind = bdrv_get_type_hint(dev->conf.bs) == BDRV_TYPE_CDROM
? SCSI_CD : SCSI_HD;
}
return scsi_initfn(dev, kind);
}
#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,
.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_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,
.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_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,
.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_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)