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authorTejun Heo <htejun@gmail.com>2006-11-01 18:39:27 +0900
committerJeff Garzik <jeff@garzik.org>2006-12-01 22:41:31 -0500
commitbaa1e78a834c917984a4659fd282f712c17ee3bf (patch)
tree6c8035d6d49752f7ea81696fa6e61c424b29589c /include/linux/libata.h
parentefdaedc443e935eda82e9e78a6e65d1f993d242f (diff)
[PATCH] libata: implement ATA_EHI_SETMODE and ATA_EHI_POST_SETMODE
libata EH used to perform ata_set_mode() iff the EH session performed reset as indicated by ATA_EHI_DID_RESET. This is incorrect because ->dev_config() called by revalidation is allowed to modify transfer mode which ata_set_mode() should take care of. This patch implements the following two flags. * ATA_EHI_SETMODE: set during EH to schedule ata_set_mode(). Both new device attachment and revalidation set this flag. * ATA_EHI_POST_SETMODE: set while the device is revalidated after ata_set_mode(). Post-setmode revalidation is different from initial configuaration and EH revalidation in that ->dev_config() is not allowed tune transfer mode. LLD can use this flag to determine whether it's allowed to tune transfer mode. Note that POST_SETMODE ->dev_config() is guaranteed to be preceded by non-POST_SETMODE ->dev_config(). Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'include/linux/libata.h')
-rw-r--r--include/linux/libata.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 949484627e67..0d0ddeaee73f 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -284,6 +284,8 @@ enum {
ATA_EHI_DID_RESET = (1 << 16), /* already reset this port */
ATA_EHI_PRINTINFO = (1 << 17), /* print configuration info */
+ ATA_EHI_SETMODE = (1 << 18), /* configure transfer mode */
+ ATA_EHI_POST_SETMODE = (1 << 19), /* revaildating after setmode */
ATA_EHI_RESET_MODIFIER_MASK = ATA_EHI_RESUME_LINK,