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libata: Add H2D FIS "auxiliary" port flag

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Add a new port flag, ATA_FLAG_FPDMA_AUX, used to indicate
support for transmission of the H2D FIS 'auxiliary' field.

Signed-off-by: Marc Carino <marc.ceeeee@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Marc Carino 2013-08-24 23:22:49 -07:00 committed by Tejun Heo
parent 8be5ad9acb
commit 40fb59e75a
2 changed files with 9 additions and 0 deletions
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8
drivers/ata/ahci.c
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@ -1288,6 +1288,14 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
*/
if (!(hpriv->flags & AHCI_HFLAG_NO_FPDMA_AA))
pi.flags |= ATA_FLAG_FPDMA_AA;
/*
* All AHCI controllers should be forward-compatible
* with the new auxiliary field. This code should be
* conditionalized if any buggy AHCI controllers are
* encountered.
*/
pi.flags |= ATA_FLAG_FPDMA_AUX;
}
if (hpriv->cap & HOST_CAP_PMP)

1
include/linux/libata.h
View File

@ -223,6 +223,7 @@ enum {
ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */
ATA_FLAG_AN = (1 << 18), /* controller supports AN */
ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */
ATA_FLAG_FPDMA_AUX = (1 << 20), /* controller supports H2DFIS aux field */
ATA_FLAG_EM = (1 << 21), /* driver supports enclosure
* management */
ATA_FLAG_SW_ACTIVITY = (1 << 22), /* driver supports sw activity