sata_inic162x: add cardbus support

When attached to cardbus, mmio region is at BAR 1.  Other than that,
everything else is the same.  Add support for it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 24 insertions, 12 deletions

diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c
index 55f8e93ac48e..8c1f06a3c8fd 100644
--- a/drivers/ata/sata_inic162x.c
+++ b/drivers/ata/sata_inic162x.c
@@ -31,7 +31,8 @@
 #define DRV_VERSION     "0.3"
 
 enum {
-        MMIO_BAR                = 5,
+        MMIO_BAR_PCI            = 5,
+        MMIO_BAR_CARDBUS        = 1,
 
         NR_PORTS                = 2,
 
@@ -197,6 +198,7 @@ struct inic_pkt {
 } __packed;
 
 struct inic_host_priv {
+        void __iomem    *mmio_base;
         u16             cached_hctl;
 };
 
@@ -221,7 +223,9 @@ static const int scr_map[] = {
 
 static void __iomem *inic_port_base(struct ata_port *ap)
 {
-        return ap->host->iomap[MMIO_BAR] + ap->port_no * PORT_SIZE;
+        struct inic_host_priv *hpriv = ap->host->private_data;
+
+        return hpriv->mmio_base + ap->port_no * PORT_SIZE;
 }
 
 static void inic_reset_port(void __iomem *port_base)
@@ -378,11 +382,11 @@ static void inic_host_intr(struct ata_port *ap)
 static irqreturn_t inic_interrupt(int irq, void *dev_instance)
 {
         struct ata_host *host = dev_instance;
-        void __iomem *mmio_base = host->iomap[MMIO_BAR];
+        struct inic_host_priv *hpriv = host->private_data;
         u16 host_irq_stat;
         int i, handled = 0;;
 
-        host_irq_stat = readw(mmio_base + HOST_IRQ_STAT);
+        host_irq_stat = readw(hpriv->mmio_base + HOST_IRQ_STAT);
 
         if (unlikely(!(host_irq_stat & HIRQ_GLOBAL)))
                 goto out;
@@ -770,7 +774,6 @@ static int inic_pci_device_resume(struct pci_dev *pdev)
 {
         struct ata_host *host = dev_get_drvdata(&pdev->dev);
         struct inic_host_priv *hpriv = host->private_data;
-        void __iomem *mmio_base = host->iomap[MMIO_BAR];
         int rc;
 
         rc = ata_pci_device_do_resume(pdev);
@@ -778,7 +781,7 @@ static int inic_pci_device_resume(struct pci_dev *pdev)
                 return rc;
 
         if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) {
-                rc = init_controller(mmio_base, hpriv->cached_hctl);
+                rc = init_controller(hpriv->mmio_base, hpriv->cached_hctl);
                 if (rc)
                         return rc;
         }
@@ -796,6 +799,7 @@ static int inic_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
         struct ata_host *host;
         struct inic_host_priv *hpriv;
         void __iomem * const *iomap;
+        int mmio_bar;
         int i, rc;
 
         if (!printed_version++)
@@ -809,22 +813,30 @@ static int inic_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
         host->private_data = hpriv;
 
-        /* acquire resources and fill host */
+        /* Acquire resources and fill host.  Note that PCI and cardbus
+         * use different BARs.
+         */
         rc = pcim_enable_device(pdev);
         if (rc)
                 return rc;
 
-        rc = pcim_iomap_regions(pdev, 1 << MMIO_BAR, DRV_NAME);
+        if (pci_resource_flags(pdev, MMIO_BAR_PCI) & IORESOURCE_MEM)
+                mmio_bar = MMIO_BAR_PCI;
+        else
+                mmio_bar = MMIO_BAR_CARDBUS;
+
+        rc = pcim_iomap_regions(pdev, 1 << mmio_bar, DRV_NAME);
         if (rc)
                 return rc;
         host->iomap = iomap = pcim_iomap_table(pdev);
-        hpriv->cached_hctl = readw(iomap[MMIO_BAR] + HOST_CTL);
+        hpriv->mmio_base = iomap[mmio_bar];
+        hpriv->cached_hctl = readw(hpriv->mmio_base + HOST_CTL);
 
         for (i = 0; i < NR_PORTS; i++) {
                 struct ata_port *ap = host->ports[i];
 
-                ata_port_pbar_desc(ap, MMIO_BAR, -1, "mmio");
-                ata_port_pbar_desc(ap, MMIO_BAR, i * PORT_SIZE, "port");
+                ata_port_pbar_desc(ap, mmio_bar, -1, "mmio");
+                ata_port_pbar_desc(ap, mmio_bar, i * PORT_SIZE, "port");
         }
 
         /* Set dma_mask.  This devices doesn't support 64bit addressing. */
@@ -854,7 +866,7 @@ static int inic_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                 return rc;
         }
 
-        rc = init_controller(iomap[MMIO_BAR], hpriv->cached_hctl);
+        rc = init_controller(hpriv->mmio_base, hpriv->cached_hctl);
         if (rc) {
                 dev_printk(KERN_ERR, &pdev->dev,
                            "failed to initialize controller\n");