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windows cdrom cache flush (Stefano Stabellini)

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Windows only flushes its cache of a CDROM if it gets a
SENSE_UNIT_ATTENTION CHECK_CONDITION response to a REQUEST_SENSE
command.
Make sure it does so after we change the CD.

Tab damage fixed by Anthony Liguori

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Steven Smith <steven.smith@citrix.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5698 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-11-11 20:57:30 +00:00
parent f07b6003b6
commit 9118e7f08f
1 changed files with 27 additions and 1 deletions

28
hw/ide.c

@ -351,6 +351,7 @@
#define ASC_ILLEGAL_OPCODE 0x20
#define ASC_LOGICAL_BLOCK_OOR 0x21
#define ASC_INV_FIELD_IN_CMD_PACKET 0x24
#define ASC_MEDIUM_MAY_HAVE_CHANGED 0x28
#define ASC_INCOMPATIBLE_FORMAT 0x30
#define ASC_MEDIUM_NOT_PRESENT 0x3a
#define ASC_SAVING_PARAMETERS_NOT_SUPPORTED 0x39
@ -1106,6 +1107,17 @@ static void ide_atapi_cmd_error(IDEState *s, int sense_key, int asc)
ide_set_irq(s);
}
static void ide_atapi_cmd_check_status(IDEState *s)
{
#ifdef DEBUG_IDE_ATAPI
printf("atapi_cmd_check_status\n");
#endif
s->error = MC_ERR | (SENSE_UNIT_ATTENTION << 4);
s->status = ERR_STAT;
s->nsector = 0;
ide_set_irq(s);
}
static inline void cpu_to_ube16(uint8_t *buf, int val)
{
buf[0] = val >> 8;
@ -1528,6 +1540,14 @@ static void ide_atapi_cmd(IDEState *s)
printf("\n");
}
#endif
/* If there's a UNIT_ATTENTION condition pending, only
REQUEST_SENSE and INQUIRY commands are allowed to complete. */
if (s->sense_key == SENSE_UNIT_ATTENTION &&
s->io_buffer[0] != GPCMD_REQUEST_SENSE &&
s->io_buffer[0] != GPCMD_INQUIRY) {
ide_atapi_cmd_check_status(s);
return;
}
switch(s->io_buffer[0]) {
case GPCMD_TEST_UNIT_READY:
if (bdrv_is_inserted(s->bs)) {
@ -1623,6 +1643,8 @@ static void ide_atapi_cmd(IDEState *s)
buf[2] = s->sense_key;
buf[7] = 10;
buf[12] = s->asc;
if (s->sense_key == SENSE_UNIT_ATTENTION)
s->sense_key = SENSE_NONE;
ide_atapi_cmd_reply(s, 18, max_len);
break;
case GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
@ -1974,9 +1996,13 @@ static void cdrom_change_cb(void *opaque)
IDEState *s = opaque;
uint64_t nb_sectors;
/* XXX: send interrupt too */
bdrv_get_geometry(s->bs, &nb_sectors);
s->nb_sectors = nb_sectors;
s->sense_key = SENSE_UNIT_ATTENTION;
s->asc = ASC_MEDIUM_MAY_HAVE_CHANGED;
ide_set_irq(s);
}
static void ide_cmd_lba48_transform(IDEState *s, int lba48)