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use_clustering (sht) bit set to 0 in AHCI ? 

ahci: enable sg segment clustering

The specification states that ahci supports segments up to 4MiB in size,
so enable clustering.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Jens Axboe 2007-05-22 09:45:39 +02:00 committed by Jeff Garzik
parent a16abc0b5f
commit be5d82183f
1 changed files with 1 additions and 1 deletions
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2
drivers/ata/ahci.c
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@ -54,7 +54,7 @@ enum {
AHCI_MAX_PORTS = 32,
AHCI_MAX_SG = 168, /* hardware max is 64K */
AHCI_DMA_BOUNDARY = 0xffffffff,
AHCI_USE_CLUSTERING = 0,
AHCI_USE_CLUSTERING = 1,
AHCI_MAX_CMDS = 32,
AHCI_CMD_SZ = 32,
AHCI_CMD_SLOT_SZ = AHCI_MAX_CMDS * AHCI_CMD_SZ,