ahci: Add support for Dell S140 and later controllers

This patch enables support for Dell S140 and later controllers
that use Intel's PCHs configured as PCI_CLASS_STORAGE_RAID.

Reviewed-by: Mika Westerberg <mika.westerberg@intel.com>
Signed-off-by: Charles Rose <charles.rose@dell.com>
Link: https://lore.kernel.org/r/20210615190801.1744466-1-charles.rose@dell.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/ata/ahci.c

@@ -446,6 +446,10 @@ static const struct pci_device_id ahci_pci_tbl[] = {
 	{ PCI_VENDOR_ID_AMD, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
 	  PCI_CLASS_STORAGE_RAID << 8, 0xffffff, board_ahci },
 
+	/* Dell S140/S150 */
+	{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID, PCI_SUBVENDOR_ID_DELL, PCI_ANY_ID,
+	  PCI_CLASS_STORAGE_RAID << 8, 0xffffff, board_ahci },
+
 	/* VIA */
 	{ PCI_VDEVICE(VIA, 0x3349), board_ahci_vt8251 }, /* VIA VT8251 */
 	{ PCI_VDEVICE(VIA, 0x6287), board_ahci_vt8251 }, /* VIA VT8251 */

include/linux/pci_ids.h

@@ -631,6 +631,8 @@
 #define PCI_DEVICE_ID_DELL_RAC4		0x0012
 #define PCI_DEVICE_ID_DELL_PERC5	0x0015
 
+#define PCI_SUBVENDOR_ID_DELL		0x1028
+
 #define PCI_VENDOR_ID_MATROX		0x102B
 #define PCI_DEVICE_ID_MATROX_MGA_2	0x0518
 #define PCI_DEVICE_ID_MATROX_MIL	0x0519