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ata: ahci: Add support for AMD A85 FCH (Hudson D4)

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[ Upstream commit a17ab7aba5df4135ef77d7f6d7105e1ea414936f ]

Add support for the AMD A85 FCH (Hudson D4) AHCI adapter.

Since this adapter does not require the default 200 ms debounce delay
in sata_link_resume(), create a new board board_ahci_no_debounce_delay
with the link flag ATA_LFLAG_NO_DEBOUNCE_DELAY, and, for now, configure
the AMD A85 FCH (Hudson D4) to use it. On the ASUS F2A85-M PRO it
reduces the Linux kernel boot time by the expected 200 ms from 787 ms
to 585 ms.

Signed-off-by: Paul Menzel <pmenzel@molgen.mpg.de>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Stable-dep-of: 2a2df98ec592 ("ata: ahci: Add Elkhart Lake AHCI controller")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Paul Menzel 2022-01-05 16:36:18 +01:00 committed by Greg Kroah-Hartman
parent 0156cce71f
commit 8061c399c8
1 changed files with 9 additions and 0 deletions
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9
drivers/ata/ahci.c
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@ -51,6 +51,7 @@ enum board_ids {
board_ahci,
board_ahci_ign_iferr,
board_ahci_mobile,
board_ahci_no_debounce_delay,
board_ahci_nomsi,
board_ahci_noncq,
board_ahci_nosntf,
@ -142,6 +143,13 @@ static const struct ata_port_info ahci_port_info[] = {
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
[board_ahci_no_debounce_delay] = {
.flags = AHCI_FLAG_COMMON,
.link_flags = ATA_LFLAG_NO_DEBOUNCE_DELAY,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_ops,
},
[board_ahci_nomsi] = {
AHCI_HFLAGS (AHCI_HFLAG_NO_MSI),
.flags = AHCI_FLAG_COMMON,
@ -442,6 +450,7 @@ static const struct pci_device_id ahci_pci_tbl[] = {
board_ahci_al },
/* AMD */
{ PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD Hudson-2 */
{ PCI_VDEVICE(AMD, 0x7801), board_ahci_no_debounce_delay }, /* AMD Hudson-2 (AHCI mode) */
{ PCI_VDEVICE(AMD, 0x7900), board_ahci }, /* AMD CZ */
{ PCI_VDEVICE(AMD, 0x7901), board_ahci_mobile }, /* AMD Green Sardine */
/* AMD is using RAID class only for ahci controllers */