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| author | Christoph Hellwig <hch@lst.de> | 2010-10-04 15:29:41 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2010-10-22 14:49:35 +0200 |
| commit | a58b8d5401b6064d52113f243456115d046bdd12 (patch) | |
| tree | e325b5f7818062aadec21ef035140d169205bbc4 /hw | |
| parent | 9b036055ef65d0ab3236dfdb0d07828cea961133 (diff) | |
| download | qemu-a58b8d5401b6064d52113f243456115d046bdd12.tar.gz qemu-a58b8d5401b6064d52113f243456115d046bdd12.tar.bz2 qemu-a58b8d5401b6064d52113f243456115d046bdd12.zip | |
ide: set WCACHE supported in IDENTIFY data
ATA does not only have the WCACHE enabled bit in identify word 85, but also
a WCACHE supported bit in word 82. While the Linux kernel is fine with the
latter at least hdparm also needs the former before correctly displaying
the cache settings. There's also a non-zero chance other operating systems
are more picky in their volatile write cache detection.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/ide/core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/hw/ide/core.c b/hw/ide/core.c index 06b6e14e56..5ccb09cfbc 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -146,8 +146,8 @@ static void ide_identify(IDEState *s) put_le16(p + 68, 120); put_le16(p + 80, 0xf0); /* ata3 -> ata6 supported */ put_le16(p + 81, 0x16); /* conforms to ata5 */ - /* 14=NOP supported, 0=SMART supported */ - put_le16(p + 82, (1 << 14) | 1); + /* 14=NOP supported, 5=WCACHE supported, 0=SMART supported */ + put_le16(p + 82, (1 << 14) | (1 << 5) | 1); /* 13=flush_cache_ext,12=flush_cache,10=lba48 */ put_le16(p + 83, (1 << 14) | (1 << 13) | (1 <<12) | (1 << 10)); /* 14=set to 1, 1=SMART self test, 0=SMART error logging */ |