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Diffstat (limited to 'drivers/ata/pata_marvell.c')
-rw-r--r--drivers/ata/pata_marvell.c51
1 files changed, 38 insertions, 13 deletions
diff --git a/drivers/ata/pata_marvell.c b/drivers/ata/pata_marvell.c
index 24a011b25024..0d87eec84966 100644
--- a/drivers/ata/pata_marvell.c
+++ b/drivers/ata/pata_marvell.c
@@ -20,29 +20,30 @@
#include <linux/ata.h>
#define DRV_NAME "pata_marvell"
-#define DRV_VERSION "0.1.4"
+#define DRV_VERSION "0.1.6"
/**
- * marvell_pre_reset - check for 40/80 pin
- * @link: link
- * @deadline: deadline jiffies for the operation
+ * marvell_pata_active - check if PATA is active
+ * @pdev: PCI device
*
- * Perform the PATA port setup we need.
+ * Returns 1 if the PATA port may be active. We know how to check this
+ * for the 6145 but not the other devices
*/
-static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
+static int marvell_pata_active(struct pci_dev *pdev)
{
- struct ata_port *ap = link->ap;
- struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+ int i;
u32 devices;
void __iomem *barp;
- int i;
- /* Check if our port is enabled */
+ /* We don't yet know how to do this for other devices */
+ if (pdev->device != 0x6145)
+ return 1;
barp = pci_iomap(pdev, 5, 0x10);
if (barp == NULL)
return -ENOMEM;
+
printk("BAR5:");
for(i = 0; i <= 0x0F; i++)
printk("%02X:%02X ", i, ioread8(barp + i));
@@ -51,9 +52,27 @@ static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
devices = ioread32(barp + 0x0C);
pci_iounmap(pdev, barp);
- if ((pdev->device == 0x6145) && (ap->port_no == 0) &&
- (!(devices & 0x10))) /* PATA enable ? */
- return -ENOENT;
+ if (devices & 0x10)
+ return 1;
+ return 0;
+}
+
+/**
+ * marvell_pre_reset - check for 40/80 pin
+ * @link: link
+ * @deadline: deadline jiffies for the operation
+ *
+ * Perform the PATA port setup we need.
+ */
+
+static int marvell_pre_reset(struct ata_link *link, unsigned long deadline)
+{
+ struct ata_port *ap = link->ap;
+ struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+
+ if (pdev->device == 0x6145 && ap->port_no == 0 &&
+ !marvell_pata_active(pdev)) /* PATA enable ? */
+ return -ENOENT;
return ata_sff_prereset(link, deadline);
}
@@ -128,6 +147,12 @@ static int marvell_init_one (struct pci_dev *pdev, const struct pci_device_id *i
if (pdev->device == 0x6101)
ppi[1] = &ata_dummy_port_info;
+#if defined(CONFIG_AHCI) || defined(CONFIG_AHCI_MODULE)
+ if (!marvell_pata_active(pdev)) {
+ printk(KERN_INFO DRV_NAME ": PATA port not active, deferring to AHCI driver.\n");
+ return -ENODEV;
+ }
+#endif
return ata_pci_sff_init_one(pdev, ppi, &marvell_sht, NULL);
}

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