ahci: Add support for Amazon's Annapurna Labs SATA controller

This patch adds basic support for Amazon's Annapurna Labs SATA
controller.
Signed-off-by: Hanna Hawa <hhhawa@amazon.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/ata/ahci.c

@@ -56,6 +56,7 @@ enum board_ids {
 	board_ahci_yes_fbs,
 
 	/* board IDs for specific chipsets in alphabetical order */
+	board_ahci_al,
 	board_ahci_avn,
 	board_ahci_mcp65,
 	board_ahci_mcp77,
@@ -167,6 +168,13 @@ static const struct ata_port_info ahci_port_info[] = {
 		.port_ops	= &ahci_ops,
 	},
 	/* by chipsets */
+	[board_ahci_al] = {
+		AHCI_HFLAGS	(AHCI_HFLAG_NO_PMP | AHCI_HFLAG_NO_MSI),
+		.flags		= AHCI_FLAG_COMMON,
+		.pio_mask	= ATA_PIO4,
+		.udma_mask	= ATA_UDMA6,
+		.port_ops	= &ahci_ops,
+	},
 	[board_ahci_avn] = {
 		.flags		= AHCI_FLAG_COMMON,
 		.pio_mask	= ATA_PIO4,
@@ -415,6 +423,11 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 	{ PCI_VDEVICE(ATI, 0x4394), board_ahci_sb700 }, /* ATI SB700/800 */
 	{ PCI_VDEVICE(ATI, 0x4395), board_ahci_sb700 }, /* ATI SB700/800 */
 
+	/* Amazon's Annapurna Labs support */
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031),
+		.class = PCI_CLASS_STORAGE_SATA_AHCI,
+		.class_mask = 0xffffff,
+		board_ahci_al },
 	/* AMD */
 	{ PCI_VDEVICE(AMD, 0x7800), board_ahci }, /* AMD Hudson-2 */
 	{ PCI_VDEVICE(AMD, 0x7900), board_ahci }, /* AMD CZ */