gwj / at91sam9263 · Commits

Commit 9118e7f08f39001c92d595090b41305ef45c200a

Authored by aliguori
1 parent f07b6003

windows cdrom cache flush (Stefano Stabellini) 

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
Inline Side-by-side
Showing 1 changed file with 27 additions and 1 deletions
hw/ide.c
  View file @9118e7f
... ... @@ -351,6 +351,7 @@
351 351 #define ASC_ILLEGAL_OPCODE 0x20
352 352 #define ASC_LOGICAL_BLOCK_OOR 0x21
353 353 #define ASC_INV_FIELD_IN_CMD_PACKET 0x24
  354 +#define ASC_MEDIUM_MAY_HAVE_CHANGED 0x28
354 355 #define ASC_INCOMPATIBLE_FORMAT 0x30
355 356 #define ASC_MEDIUM_NOT_PRESENT 0x3a
356 357 #define ASC_SAVING_PARAMETERS_NOT_SUPPORTED 0x39
... ... @@ -1106,6 +1107,17 @@ static void ide_atapi_cmd_error(IDEState *s, int sense_key, int asc)
1106 1107 ide_set_irq(s);
1107 1108 }
1108 1109  
  1110 +static void ide_atapi_cmd_check_status(IDEState *s)
  1111 +{
  1112 +#ifdef DEBUG_IDE_ATAPI
  1113 + printf("atapi_cmd_check_status\n");
  1114 +#endif
  1115 + s->error = MC_ERR | (SENSE_UNIT_ATTENTION << 4);
  1116 + s->status = ERR_STAT;
  1117 + s->nsector = 0;
  1118 + ide_set_irq(s);
  1119 +}
  1120 +
1109 1121 static inline void cpu_to_ube16(uint8_t *buf, int val)
1110 1122 {
1111 1123 buf[0] = val >> 8;
... ... @@ -1528,6 +1540,14 @@ static void ide_atapi_cmd(IDEState *s)
1528 1540 printf("\n");
1529 1541 }
1530 1542 #endif
  1543 + /* If there's a UNIT_ATTENTION condition pending, only
  1544 + REQUEST_SENSE and INQUIRY commands are allowed to complete. */
  1545 + if (s->sense_key == SENSE_UNIT_ATTENTION &&
  1546 + s->io_buffer[0] != GPCMD_REQUEST_SENSE &&
  1547 + s->io_buffer[0] != GPCMD_INQUIRY) {
  1548 + ide_atapi_cmd_check_status(s);
  1549 + return;
  1550 + }
1531 1551 switch(s->io_buffer[0]) {
1532 1552 case GPCMD_TEST_UNIT_READY:
1533 1553 if (bdrv_is_inserted(s->bs)) {
... ... @@ -1623,6 +1643,8 @@ static void ide_atapi_cmd(IDEState *s)
1623 1643 buf[2] = s->sense_key;
1624 1644 buf[7] = 10;
1625 1645 buf[12] = s->asc;
  1646 + if (s->sense_key == SENSE_UNIT_ATTENTION)
  1647 + s->sense_key = SENSE_NONE;
1626 1648 ide_atapi_cmd_reply(s, 18, max_len);
1627 1649 break;
1628 1650 case GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL:
... ... @@ -1974,9 +1996,13 @@ static void cdrom_change_cb(void *opaque)
1974 1996 IDEState *s = opaque;
1975 1997 uint64_t nb_sectors;
1976 1998  
1977   - /* XXX: send interrupt too */
1978 1999 bdrv_get_geometry(s->bs, &nb_sectors);
1979 2000 s->nb_sectors = nb_sectors;
  2001 +
  2002 + s->sense_key = SENSE_UNIT_ATTENTION;
  2003 + s->asc = ASC_MEDIUM_MAY_HAVE_CHANGED;
  2004 +
  2005 + ide_set_irq(s);
1980 2006 }
1981 2007  
1982 2008 static void ide_cmd_lba48_transform(IDEState *s, int lba48)
... ...