[PATCH] sata_svw: Add support for new device IDs

BCM5785 (HT1000) is a new southbridge from Serverworks/Broadcom that
incorporates 4 SATA ports in a single PCIX function. Functionally these
ports are similar to that in older devices like the Apple K2 and the
Frodo4/8. This patch adds support for the new PCI device ID along with a
blurb on what the various device IDs mean. Additionally in all devices
based on this SATA controller, the SATA ports appear as a single PCI
function. This is true for older Frodo8 devices as well. Hence the init
function should init all the ports present in the detected controller
(which could be 4 or 8).
Signed-off-by: Narendra Sankar <nsankar@broadcom.com>

drivers/scsi/sata_svw.c

@@ -343,6 +343,7 @@ static int k2_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 	void *mmio_base;
 	int pci_dev_busy = 0;
 	int rc;
+	int i;
 
 	if (!printed_version++)
 		printk(KERN_DEBUG DRV_NAME " version " DRV_VERSION "\n");
@@ -420,11 +421,11 @@ static int k2_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 	probe_ent->mwdma_mask = 0x7;
 	probe_ent->udma_mask = 0x7f;
 
-	/* We have 4 ports per PCI function */
-	k2_sata_setup_port(&probe_ent->port[0], base + 0 * K2_SATA_PORT_OFFSET);
-	k2_sata_setup_port(&probe_ent->port[1], base + 1 * K2_SATA_PORT_OFFSET);
-	k2_sata_setup_port(&probe_ent->port[2], base + 2 * K2_SATA_PORT_OFFSET);
-	k2_sata_setup_port(&probe_ent->port[3], base + 3 * K2_SATA_PORT_OFFSET);
+	/* different controllers have different number of ports - currently 4 or 8 */
+	/* All ports are on the same function. Multi-function device is no
+	 * longer available. This should not be seen in any system. */
+	for (i = 0; i < ent->driver_data; i++)
+		k2_sata_setup_port(&probe_ent->port[i], base + i * K2_SATA_PORT_OFFSET);
 
 	pci_set_master(pdev);
 
@@ -444,11 +445,17 @@ static int k2_sata_init_one (struct pci_dev *pdev, const struct pci_device_id *e
 	return rc;
 }
 
-
+/* 0x240 is device ID for Apple K2 device
+ * 0x241 is device ID for Serverworks Frodo4
+ * 0x242 is device ID for Serverworks Frodo8
+ * 0x24a is device ID for BCM5785 (aka HT1000) HT southbridge integrated SATA
+ * controller
+ * */
 static struct pci_device_id k2_sata_pci_tbl[] = {
-	{ 0x1166, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
-	{ 0x1166, 0x0241, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
-	{ 0x1166, 0x0242, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+	{ 0x1166, 0x0240, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
+	{ 0x1166, 0x0241, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
+	{ 0x1166, 0x0242, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
+	{ 0x1166, 0x024a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
 	{ }
 };