[PATCH] sata_sil: separate out sil_init_controller()

Separate out controller initialization from sil_init_one() into
sil_init_controller().  This will be used by resume.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 48 insertions, 38 deletions

diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index 70dbfb8a7d51..6033f796397f 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -561,6 +561,52 @@ static void sil_dev_config(struct ata_port *ap, struct ata_device *dev)
         }
 }
 
+static void sil_init_controller(struct pci_dev *pdev,
+                                int n_ports, unsigned long host_flags,
+                                void __iomem *mmio_base)
+{
+        u8 cls;
+        u32 tmp;
+        int i;
+
+        /* Initialize FIFO PCI bus arbitration */
+        cls = sil_get_device_cache_line(pdev);
+        if (cls) {
+                cls >>= 3;
+                cls++;  /* cls = (line_size/8)+1 */
+                for (i = 0; i < n_ports; i++)
+                        writew(cls << 8 | cls,
+                               mmio_base + sil_port[i].fifo_cfg);
+        } else
+                dev_printk(KERN_WARNING, &pdev->dev,
+                           "cache line size not set.  Driver may not function\n");
+
+        /* Apply R_ERR on DMA activate FIS errata workaround */
+        if (host_flags & SIL_FLAG_RERR_ON_DMA_ACT) {
+                int cnt;
+
+                for (i = 0, cnt = 0; i < n_ports; i++) {
+                        tmp = readl(mmio_base + sil_port[i].sfis_cfg);
+                        if ((tmp & 0x3) != 0x01)
+                                continue;
+                        if (!cnt)
+                                dev_printk(KERN_INFO, &pdev->dev,
+                                           "Applying R_ERR on DMA activate "
+                                           "FIS errata fix\n");
+                        writel(tmp & ~0x3, mmio_base + sil_port[i].sfis_cfg);
+                        cnt++;
+                }
+        }
+
+        if (n_ports == 4) {
+                /* flip the magic "make 4 ports work" bit */
+                tmp = readl(mmio_base + sil_port[2].bmdma);
+                if ((tmp & SIL_INTR_STEERING) == 0)
+                        writel(tmp | SIL_INTR_STEERING,
+                               mmio_base + sil_port[2].bmdma);
+        }
+}
+
 static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 {
         static int printed_version;
@@ -570,8 +616,6 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
         int rc;
         unsigned int i;
         int pci_dev_busy = 0;
-        u32 tmp;
-        u8 cls;
 
         if (!printed_version++)
                 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
@@ -630,42 +674,8 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
                 ata_std_ports(&probe_ent->port[i]);
         }
 
-        /* Initialize FIFO PCI bus arbitration */
-        cls = sil_get_device_cache_line(pdev);
-        if (cls) {
-                cls >>= 3;
-                cls++;  /* cls = (line_size/8)+1 */
-                for (i = 0; i < probe_ent->n_ports; i++)
-                        writew(cls << 8 | cls,
-                               mmio_base + sil_port[i].fifo_cfg);
-        } else
-                dev_printk(KERN_WARNING, &pdev->dev,
-                           "cache line size not set.  Driver may not function\n");
-
-        /* Apply R_ERR on DMA activate FIS errata workaround */
-        if (probe_ent->host_flags & SIL_FLAG_RERR_ON_DMA_ACT) {
-                int cnt;
-
-                for (i = 0, cnt = 0; i < probe_ent->n_ports; i++) {
-                        tmp = readl(mmio_base + sil_port[i].sfis_cfg);
-                        if ((tmp & 0x3) != 0x01)
-                                continue;
-                        if (!cnt)
-                                dev_printk(KERN_INFO, &pdev->dev,
-                                           "Applying R_ERR on DMA activate "
-                                           "FIS errata fix\n");
-                        writel(tmp & ~0x3, mmio_base + sil_port[i].sfis_cfg);
-                        cnt++;
-                }
-        }
-
-        if (ent->driver_data == sil_3114) {
-                /* flip the magic "make 4 ports work" bit */
-                tmp = readl(mmio_base + sil_port[2].bmdma);
-                if ((tmp & SIL_INTR_STEERING) == 0)
-                        writel(tmp | SIL_INTR_STEERING,
-                               mmio_base + sil_port[2].bmdma);
-        }
+        sil_init_controller(pdev, probe_ent->n_ports, probe_ent->host_flags,
+                            mmio_base);
 
         pci_set_master(pdev);