[libata sata_via] add support for VT6421 SATA

ChangeSet 1.1537.6.2, 2005/02/13 13:27:08-05:00, [email protected]

	[libata sata_via] add support for VT6421 SATA



 sata_via.c |   94 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-------
 1 files changed, 84 insertions(+), 10 deletions(-)


diff -Nru a/drivers/scsi/sata_via.c b/drivers/scsi/sata_via.c
--- a/drivers/scsi/sata_via.c	2005-03-04 12:02:07 -08:00
+++ b/drivers/scsi/sata_via.c	2005-03-04 12:02:07 -08:00
@@ -24,6 +24,11 @@
    If you do not delete the provisions above, a recipient may use your
    version of this file under either the OSL or the GPL.
 
+   ----------------------------------------------------------------------
+
+   To-do list:
+   * VT6421 PATA support
+
  */
 
 #include <linux/kernel.h>
@@ -38,10 +43,11 @@
 #include <asm/io.h>
 
 #define DRV_NAME	"sata_via"
-#define DRV_VERSION	"1.0"
+#define DRV_VERSION	"1.1"
 
 enum board_ids_enum {
 	vt6420,
+	vt6421,
 };
 
 enum {
@@ -67,6 +73,7 @@
 
 static struct pci_device_id svia_pci_tbl[] = {
 	{ 0x1106, 0x3149, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6420 },
+	{ 0x1106, 0x3249, PCI_ANY_ID, PCI_ANY_ID, 0, 0, vt6421 },
 
 	{ }	/* terminate list */
 };
@@ -159,11 +166,39 @@
 	8, 4, 8, 4, 16, 256
 };
 
+static const unsigned int vt6421_bar_sizes[] = {
+	16, 16, 16, 16, 32, 128
+};
+
 static unsigned long svia_scr_addr(unsigned long addr, unsigned int port)
 {
 	return addr + (port * 128);
 }
 
+static unsigned long vt6421_scr_addr(unsigned long addr, unsigned int port)
+{
+	return addr + (port * 64);
+}
+
+static void vt6421_init_addrs(struct ata_probe_ent *probe_ent,
+			      struct pci_dev *pdev,
+			      unsigned int port)
+{
+	unsigned long reg_addr = pci_resource_start(pdev, port);
+	unsigned long bmdma_addr = pci_resource_start(pdev, 4) + (port * 8);
+	unsigned long scr_addr;
+
+	probe_ent->port[port].cmd_addr = reg_addr;
+	probe_ent->port[port].altstatus_addr =
+	probe_ent->port[port].ctl_addr = (reg_addr + 8) | ATA_PCI_CTL_OFS;
+	probe_ent->port[port].bmdma_addr = bmdma_addr;
+
+	scr_addr = vt6421_scr_addr(pci_resource_start(pdev, 5), port);
+	probe_ent->port[port].scr_addr = scr_addr;
+
+	ata_std_ports(&probe_ent->port[port]);
+}
+
 static struct ata_probe_ent *vt6420_init_probe_ent(struct pci_dev *pdev)
 {
 	struct ata_probe_ent *probe_ent;
@@ -181,6 +216,36 @@
 	return probe_ent;
 }
 
+static struct ata_probe_ent *vt6421_init_probe_ent(struct pci_dev *pdev)
+{
+	struct ata_probe_ent *probe_ent;
+	unsigned int i;
+
+	probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
+	if (!probe_ent)
+		return NULL;
+
+	memset(probe_ent, 0, sizeof(*probe_ent));
+	probe_ent->dev = pci_dev_to_dev(pdev);
+	INIT_LIST_HEAD(&probe_ent->node);
+
+	probe_ent->sht		= &svia_sht;
+	probe_ent->host_flags	= ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
+				  ATA_FLAG_NO_LEGACY;
+	probe_ent->port_ops	= &svia_sata_ops;
+	probe_ent->n_ports	= N_PORTS;
+	probe_ent->irq		= pdev->irq;
+	probe_ent->irq_flags	= SA_SHIRQ;
+	probe_ent->pio_mask	= 0x1f;
+	probe_ent->mwdma_mask	= 0x07;
+	probe_ent->udma_mask	= 0x7f;
+
+	for (i = 0; i < N_PORTS; i++)
+		vt6421_init_addrs(probe_ent, pdev, i);
+
+	return probe_ent;
+}
+
 static void svia_configure(struct pci_dev *pdev)
 {
 	u8 tmp8;
@@ -224,6 +289,7 @@
 	unsigned int i;
 	int rc;
 	struct ata_probe_ent *probe_ent;
+	int board_id = (int) ent->driver_data;
 	const int *bar_sizes;
 	u8 tmp8;
 
@@ -238,15 +304,19 @@
 	if (rc)
 		goto err_out;
 
-	pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
-	if (tmp8 & SATA_2DEV) {
-		printk(KERN_ERR DRV_NAME "(%s): SATA master/slave not supported (0x%x)\n",
-		       pci_name(pdev), (int) tmp8);
-		rc = -EIO;
-		goto err_out_regions;
-	}
+	if (board_id == vt6420) {
+		pci_read_config_byte(pdev, SATA_PATA_SHARING, &tmp8);
+		if (tmp8 & SATA_2DEV) {
+			printk(KERN_ERR DRV_NAME "(%s): SATA master/slave not supported (0x%x)\n",
+		       	pci_name(pdev), (int) tmp8);
+			rc = -EIO;
+			goto err_out_regions;
+		}
 
-	bar_sizes = &svia_bar_sizes[0];
+		bar_sizes = &svia_bar_sizes[0];
+	} else {
+		bar_sizes = &vt6421_bar_sizes[0];
+	}
 
 	for (i = 0; i < ARRAY_SIZE(svia_bar_sizes); i++)
 		if ((pci_resource_start(pdev, i) == 0) ||
@@ -263,7 +333,11 @@
 	if (rc)
 		goto err_out_regions;
 
-	probe_ent = vt6420_init_probe_ent(pdev);
+	if (board_id == vt6420)
+		probe_ent = vt6420_init_probe_ent(pdev);
+	else
+		probe_ent = vt6421_init_probe_ent(pdev);
+	
 	if (!probe_ent) {
 		printk(KERN_ERR DRV_NAME "(%s): out of memory\n",
 		       pci_name(pdev));