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[PATCH] Snoop SET FEATURES - WRITE CACHE ENABLE/DISABLE command(v5)

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This patch makes libata snoop 'SET FEATURES - WRITE CACHE
ENABLE/DISABLE' command, executing requisite revalidation processes
to update cached data.

Signed-off-by: Forrest Zhao <forrest.zhao@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
zhao, forrest
2006-06-12 12:01:34 +08:00
committed by Jeff Garzik
parent 39b07ce6d9
commit 3057ac3c1a
5 changed files with 44 additions and 0 deletions
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include/linux/ata.h
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@@ -181,6 +181,9 @@ enum {
XFER_PIO_0 = 0x08,
XFER_PIO_SLOW = 0x00,
SETFEATURES_WC_ON = 0x02, /* Enable write cache */
SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
/* ATAPI stuff */
ATAPI_PKT_DMA = (1 << 0),
ATAPI_DMADIR = (1 << 2), /* ATAPI data dir: