[libata sata_nv] eliminate duplicate codepaths with iomap
eliminate a bunch of
if (mmio)
writel()
else
outl()
code with the pci_iomap() and io{read,write}{8,16,32}() interface.
diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c
index 834003e..f77bf18 100644
--- a/drivers/scsi/sata_nv.c
+++ b/drivers/scsi/sata_nv.c
@@ -149,8 +149,6 @@
{ 0, } /* terminate list */
};
-#define NV_HOST_FLAGS_SCR_MMIO 0x00000001
-
struct nv_host_desc
{
enum nv_host_type host_type;
@@ -306,36 +304,23 @@
static u32 nv_scr_read (struct ata_port *ap, unsigned int sc_reg)
{
- struct ata_host_set *host_set = ap->host_set;
- struct nv_host *host = host_set->private_data;
-
if (sc_reg > SCR_CONTROL)
return 0xffffffffU;
- if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO)
- return readl((void __iomem *)ap->ioaddr.scr_addr + (sc_reg * 4));
- else
- return inl(ap->ioaddr.scr_addr + (sc_reg * 4));
+ return ioread32((void __iomem *)ap->ioaddr.scr_addr + (sc_reg * 4));
}
static void nv_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
{
- struct ata_host_set *host_set = ap->host_set;
- struct nv_host *host = host_set->private_data;
-
if (sc_reg > SCR_CONTROL)
return;
- if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO)
- writel(val, (void __iomem *)ap->ioaddr.scr_addr + (sc_reg * 4));
- else
- outl(val, ap->ioaddr.scr_addr + (sc_reg * 4));
+ iowrite32(val, (void __iomem *)ap->ioaddr.scr_addr + (sc_reg * 4));
}
static void nv_host_stop (struct ata_host_set *host_set)
{
struct nv_host *host = host_set->private_data;
- struct pci_dev *pdev = to_pci_dev(host_set->dev);
// Disable hotplug event interrupts.
if (host->host_desc->disable_hotplug)
@@ -343,8 +328,7 @@
kfree(host);
- if (host_set->mmio_base)
- pci_iounmap(pdev, host_set->mmio_base);
+ ata_pci_host_stop(host_set);
}
static int nv_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
@@ -356,6 +340,7 @@
int pci_dev_busy = 0;
int rc;
u32 bar;
+ unsigned long base;
// Make sure this is a SATA controller by counting the number of bars
// (NVIDIA SATA controllers will always have six bars). Otherwise,
@@ -400,32 +385,17 @@
probe_ent->private_data = host;
- if (pci_resource_flags(pdev, 5) & IORESOURCE_MEM)
- host->host_flags |= NV_HOST_FLAGS_SCR_MMIO;
-
- if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO) {
- unsigned long base;
-
- probe_ent->mmio_base = pci_iomap(pdev, 5, 0);
- if (probe_ent->mmio_base == NULL) {
- rc = -EIO;
- goto err_out_free_host;
- }
-
- base = (unsigned long)probe_ent->mmio_base;
-
- probe_ent->port[0].scr_addr =
- base + NV_PORT0_SCR_REG_OFFSET;
- probe_ent->port[1].scr_addr =
- base + NV_PORT1_SCR_REG_OFFSET;
- } else {
-
- probe_ent->port[0].scr_addr =
- pci_resource_start(pdev, 5) | NV_PORT0_SCR_REG_OFFSET;
- probe_ent->port[1].scr_addr =
- pci_resource_start(pdev, 5) | NV_PORT1_SCR_REG_OFFSET;
+ probe_ent->mmio_base = pci_iomap(pdev, 5, 0);
+ if (!probe_ent->mmio_base) {
+ rc = -EIO;
+ goto err_out_free_host;
}
+ base = (unsigned long)probe_ent->mmio_base;
+
+ probe_ent->port[0].scr_addr = base + NV_PORT0_SCR_REG_OFFSET;
+ probe_ent->port[1].scr_addr = base + NV_PORT1_SCR_REG_OFFSET;
+
pci_set_master(pdev);
rc = ata_device_add(probe_ent);
@@ -441,8 +411,7 @@
return 0;
err_out_iounmap:
- if (host->host_flags & NV_HOST_FLAGS_SCR_MMIO)
- pci_iounmap(pdev, probe_ent->mmio_base);
+ pci_iounmap(pdev, probe_ent->mmio_base);
err_out_free_host:
kfree(host);
err_out_free_ent: