On 07/26/2011 08:38 AM, Markus Armbruster wrote:
Hannes Reinecke<hare@xxxxxxx> writes:
On 07/25/2011 05:59 PM, Markus Armbruster wrote:
Hannes Reinecke<hare@xxxxxxx> writes:
Instead of using its own definitions scsi-disk should
be using the device type of the parent device.
Signed-off-by: Hannes Reinecke<hare@xxxxxxx>
---
hw/scsi-defs.h | 6 +++++-
hw/scsi-disk.c | 48 ++++++++++++++++++++++++------------------------
2 files changed, 29 insertions(+), 25 deletions(-)
[ .. ]
@@ -1217,44 +1214,47 @@ static int scsi_initfn(SCSIDevice *dev, SCSIDriveKind kind)
return -1;
}
- if (kind == SCSI_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;
Is this a bug fix?
No, proper initialisation.
s->qdev.type is the SCSI type we're told to emulate. So we have to set
it to the correct value otherwise the emulation will return wrong
values.
Well, it changes .type from TYPE_DISK to TYPE_ROM for scsi-cd. I
understand how that is required for your patch to work. I wonder
whether it has an impact beyond that, given that the old value is
plainly wrong.
qemu_add_vm_change_state_handler(scsi_dma_restart_cb, s);
- bdrv_set_removable(s->bs, kind == SCSI_CD);
+ bdrv_set_removable(s->bs, scsi_type == TYPE_ROM);
add_boot_device_path(s->qdev.conf.bootindex,&dev->qdev, ",0");
return 0;
}
static int scsi_hd_initfn(SCSIDevice *dev)
{
- return scsi_initfn(dev, SCSI_HD);
+ return scsi_initfn(dev, TYPE_DISK);
}
static int scsi_cd_initfn(SCSIDevice *dev)
{
- return scsi_initfn(dev, SCSI_CD);
+ return scsi_initfn(dev, TYPE_ROM);
}
static int scsi_disk_initfn(SCSIDevice *dev)
{
- SCSIDriveKind kind;
DriveInfo *dinfo;
+ uint8_t scsi_type = TYPE_DISK;
- if (!dev->conf.bs) {
- kind = SCSI_HD; /* will die in scsi_initfn() */
The comment explains why we don't explicitly fail when !dev->conf.bs,
like all the other block device models. I'd rather keep it.
Ah. The magic of block devices. By all means, keep it.
Like this?
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index f42a5d1..0925944 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -1251,17 +1251,17 @@ static int scsi_cd_initfn(SCSIDevice *dev)
static int scsi_disk_initfn(SCSIDevice *dev)
{
- SCSIDriveKind kind;
+ uint8_t scsi_type;
DriveInfo *dinfo;
if (!dev->conf.bs) {
- kind = SCSI_HD; /* will die in scsi_initfn() */
+ scsi_type = TYPE_DISK; /* will die in scsi_initfn() */
} else {
dinfo = drive_get_by_blockdev(dev->conf.bs);
- kind = dinfo->media_cd ? SCSI_CD : SCSI_HD;
+ scsi_type = dinfo->media_cd ? TYPE_ROM : TYPE_DISK;
}
- return scsi_initfn(dev, kind);
+ return scsi_initfn(dev, scsi_type);
}
#define DEFINE_SCSI_DISK_PROPERTIES() \
By the way, I'm afraid you forgot to remove typedef SCSIDriveKind. Care
to respin this one?
Here you go.
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare@xxxxxxx +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
>From f6e40a484dbcfdd4f8434ae3427c75a56581d659 Mon Sep 17 00:00:00 2001
From: Hannes Reinecke <hare@xxxxxxx>
Date: Fri, 22 Jul 2011 16:44:46 +0200
Subject: [PATCH] scsi-disk: Remove 'drive_kind'
Instead of using its own definitions scsi-disk should
be using the device type of the parent device.
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
diff --git a/hw/scsi-defs.h b/hw/scsi-defs.h
index f644860..27010b7 100644
--- a/hw/scsi-defs.h
+++ b/hw/scsi-defs.h
@@ -164,6 +164,7 @@
#define TYPE_DISK 0x00
#define TYPE_TAPE 0x01
+#define TYPE_PRINTER 0x02
#define TYPE_PROCESSOR 0x03 /* HP scanners use this */
#define TYPE_WORM 0x04 /* Treated as ROM by our system */
#define TYPE_ROM 0x05
@@ -171,6 +172,9 @@
#define TYPE_MOD 0x07 /* Magneto-optical disk -
* - treated as TYPE_DISK */
#define TYPE_MEDIUM_CHANGER 0x08
-#define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */
+#define TYPE_STORAGE_ARRAY 0x0c /* Storage array device */
+#define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */
+#define TYPE_RBC 0x0e /* Simplified Direct-Access Device */
+#define TYPE_OSD 0x11 /* Object-storage Device */
#define TYPE_NO_LUN 0x7f
diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c
index 535fa11..f2511d0 100644
--- a/hw/scsi-disk.c
+++ b/hw/scsi-disk.c
@@ -59,8 +59,6 @@ typedef struct SCSIDiskReq {
uint32_t status;
} SCSIDiskReq;
-typedef enum { SCSI_HD, SCSI_CD } SCSIDriveKind;
-
struct SCSIDiskState
{
SCSIDevice qdev;
@@ -74,7 +72,6 @@ struct SCSIDiskState
char *version;
char *serial;
SCSISense sense;
- SCSIDriveKind drive_kind;
};
static int scsi_handle_rw_error(SCSIDiskReq *r, int error, int type);
@@ -382,7 +379,7 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
return -1;
}
- if (s->drive_kind == SCSI_CD) {
+ if (s->qdev.type == TYPE_ROM) {
outbuf[buflen++] = 5;
} else {
outbuf[buflen++] = 0;
@@ -401,7 +398,7 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
if (s->serial)
outbuf[buflen++] = 0x80; // unit serial number
outbuf[buflen++] = 0x83; // device identification
- if (s->drive_kind == SCSI_HD) {
+ if (s->qdev.type == TYPE_DISK) {
outbuf[buflen++] = 0xb0; // block limits
outbuf[buflen++] = 0xb2; // thin provisioning
}
@@ -460,7 +457,7 @@ 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 (s->drive_kind == SCSI_CD) {
+ if (s->qdev.type == TYPE_ROM) {
DPRINTF("Inquiry (EVPD[%02X] not supported for CDROM\n",
page_code);
return -1;
@@ -530,12 +527,11 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
return buflen;
}
- if (s->drive_kind == SCSI_CD) {
- 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);
}
@@ -661,7 +657,7 @@ 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 (s->drive_kind != SCSI_CD)
+ if (s->qdev.type != TYPE_ROM)
return 0;
p[0] = 0x2a;
p[1] = 0x14;
@@ -877,7 +873,7 @@ static int scsi_disk_emulate_command(SCSIDiskReq *r, uint8_t *outbuf)
goto illegal_request;
break;
case START_STOP:
- if (s->drive_kind == SCSI_CD && (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));
}
@@ -1183,7 +1179,7 @@ static void scsi_destroy(SCSIDevice *dev)
blockdev_mark_auto_del(s->qdev.conf.bs);
}
-static int scsi_initfn(SCSIDevice *dev, SCSIDriveKind kind)
+static int scsi_initfn(SCSIDevice *dev, uint8_t scsi_type)
{
SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
DriveInfo *dinfo;
@@ -1193,9 +1189,8 @@ static int scsi_initfn(SCSIDevice *dev, SCSIDriveKind kind)
return -1;
}
s->bs = s->qdev.conf.bs;
- s->drive_kind = kind;
- if (kind == SCSI_HD && !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;
}
@@ -1217,44 +1212,47 @@ static int scsi_initfn(SCSIDevice *dev, SCSIDriveKind kind)
return -1;
}
- if (kind == SCSI_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, kind == SCSI_CD);
+ bdrv_set_removable(s->bs, scsi_type == TYPE_ROM);
add_boot_device_path(s->qdev.conf.bootindex, &dev->qdev, ",0");
return 0;
}
static int scsi_hd_initfn(SCSIDevice *dev)
{
- return scsi_initfn(dev, SCSI_HD);
+ return scsi_initfn(dev, TYPE_DISK);
}
static int scsi_cd_initfn(SCSIDevice *dev)
{
- return scsi_initfn(dev, SCSI_CD);
+ return scsi_initfn(dev, TYPE_ROM);
}
static int scsi_disk_initfn(SCSIDevice *dev)
{
- SCSIDriveKind kind;
DriveInfo *dinfo;
+ uint8_t scsi_type;
if (!dev->conf.bs) {
- kind = SCSI_HD; /* will die in scsi_initfn() */
+ scsi_type = TYPE_DISK; /* will die in scsi_initfn() */
} else {
dinfo = drive_get_by_blockdev(dev->conf.bs);
- kind = dinfo->media_cd ? SCSI_CD : SCSI_HD;
+ scsi_type = dinfo->media_cd ? TYPE_ROM : TYPE_DISK;
}
- return scsi_initfn(dev, kind);
+ return scsi_initfn(dev, scsi_type);
}
#define DEFINE_SCSI_DISK_PROPERTIES() \
