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Re: [Qemu-devel] [PATCH] ATAPI: Add support for ASCQ in sense codes
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH] ATAPI: Add support for ASCQ in sense codes |
Date: |
Tue, 31 Jul 2012 09:14:56 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120615 Thunderbird/13.0.1 |
Il 31/07/2012 04:07, Ronnie Sahlberg ha scritto:
> Add support for setting the ASCQ for SCSI sense codes in the ATAPI driver.
> Use this to set ASCQ==2 for the medium removal prevention that is recommended
> in MMC for this condition.
>
> asc:0x53 ascq:0x02 is the recommended error for MEDIUM_REMOVAL_PREVENTED and
> is listed in Annex F in MMC
You also need to cover migration.
You could either add a subsection, or something like this:
diff --git a/hw/ide/atapi.c b/hw/ide/atapi.c
index f7f714c..89c0157 100644
--- a/hw/ide/atapi.c
+++ b/hw/ide/atapi.c
@@ -1143,3 +1143,20 @@ void ide_atapi_cmd(IDEState *s)
ide_atapi_cmd_error(s, ILLEGAL_REQUEST, ASC_ILLEGAL_OPCODE);
}
+
+void ide_atapi_post_load(IDEState *s, int version_id)
+{
+ if (version_id < 3) {
+ if (s->sense_key == UNIT_ATTENTION &&
+ s->asc == ASC_MEDIUM_MAY_HAVE_CHANGED) {
+ s->cdrom_changed = 1;
+ }
+ }
+
+ /* This is simpler than adding a subsection just for the ascq. */
+ if (s->asc == ASC_MEDIA_REMOVAL_PREVENTED) {
+ s->ascq = 2;
+ } else {
+ s->ascq = 0;
+ }
+}
diff --git a/hw/ide/core.c b/hw/ide/core.c
index cb5ca4b..959ac48 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -2154,12 +2154,7 @@ static int ide_drive_post_load(void *opaque, int
version_id)
{
IDEState *s = opaque;
- if (version_id < 3) {
- if (s->sense_key == UNIT_ATTENTION &&
- s->asc == ASC_MEDIUM_MAY_HAVE_CHANGED) {
- s->cdrom_changed = 1;
- }
- }
+ ide_atapi_post_load(s, version_id);
if (s->identify_set) {
bdrv_set_enable_write_cache(s->bs, !!(s->identify_data[85] & (1 <<
5)));
}
diff --git a/hw/ide/internal.h b/hw/ide/internal.h
index 7170bd9..2572461 100644
--- a/hw/ide/internal.h
+++ b/hw/ide/internal.h
@@ -572,6 +572,7 @@ BlockDriverAIOCB *ide_issue_trim(BlockDriverState *bs,
/* hw/ide/atapi.c */
void ide_atapi_cmd(IDEState *s);
void ide_atapi_cmd_reply_end(IDEState *s);
+void ide_atapi_post_load(IDEState *s, int version_id);
/* hw/ide/qdev.c */
void ide_bus_new(IDEBus *idebus, DeviceState *dev, int bus_id);
In fact, I wonder if it is simpler to "make up" the ascq directly in
cmd_request_sense, instead of changing all invocations of
ide_atapi_cmd_error. Kevin, any preferences?
Paolo