libata: convert to iomap

Convert libata core layer and LLDs to use iomap.

* managed iomap is used.  Pointer to pcim_iomap_table() is cached at
  host->iomap and used through out LLDs.  This basically replaces
  host->mmio_base.

* if possible, pcim_iomap_regions() is used

Most iomap operation conversions are taken from Jeff Garzik
<jgarzik@pobox.com>'s iomap branch.

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

1 files changed, 15 insertions, 35 deletions

diff --git a/drivers/ata/pata_platform.c b/drivers/ata/pata_platform.c
index 8a261a3daeda..b35fc29f4db5 100644
--- a/drivers/ata/pata_platform.c
+++ b/drivers/ata/pata_platform.c
@@ -83,7 +83,7 @@ static struct ata_port_operations pata_platform_port_ops = {
         .qc_prep                = ata_qc_prep,
         .qc_issue               = ata_qc_issue_prot,
 
-        .data_xfer              = ata_pio_data_xfer_noirq,
+        .data_xfer              = ata_data_xfer_noirq,
 
         .irq_handler            = ata_interrupt,
         .irq_clear              = ata_bmdma_irq_clear,
@@ -134,7 +134,6 @@ static int __devinit pata_platform_probe(struct platform_device *pdev)
         struct resource *io_res, *ctl_res;
         struct ata_probe_ent ae;
         unsigned int mmio;
-        int ret;
 
         /*
          * Simple resource validation ..
@@ -188,48 +187,29 @@ static int __devinit pata_platform_probe(struct platform_device *pdev)
          * Handle the MMIO case
          */
         if (mmio) {
-                ae.port_flags |= ATA_FLAG_MMIO;
-
-                ae.port[0].cmd_addr = (unsigned long)
-                        devm_ioremap(&pdev->dev, io_res->start,
-                                     io_res->end - io_res->start + 1);
-                if (unlikely(!ae.port[0].cmd_addr)) {
-                        dev_err(&pdev->dev, "failed to remap IO base\n");
-                        return -ENXIO;
-                }
-
-                ae.port[0].ctl_addr = (unsigned long)
-                        devm_ioremap(&pdev->dev, ctl_res->start,
-                                     ctl_res->end - ctl_res->start + 1);
-                if (unlikely(!ae.port[0].ctl_addr)) {
-                        dev_err(&pdev->dev, "failed to remap CTL base\n");
-                        ret = -ENXIO;
-                        goto bad_remap;
-                }
+                ae.port[0].cmd_addr = devm_ioremap(&pdev->dev, io_res->start,
+                                io_res->end - io_res->start + 1);
+                ae.port[0].ctl_addr = devm_ioremap(&pdev->dev, ctl_res->start,
+                                ctl_res->end - ctl_res->start + 1);
         } else {
-                ae.port[0].cmd_addr = io_res->start;
-                ae.port[0].ctl_addr = ctl_res->start;
+                ae.port[0].cmd_addr = devm_ioport_map(&pdev->dev, io_res->start,
+                                io_res->end - io_res->start + 1);
+                ae.port[0].ctl_addr = devm_ioport_map(&pdev->dev, ctl_res->start,
+                                ctl_res->end - ctl_res->start + 1);
+        }
+        if (!ae.port[0].cmd_addr || !ae.port[0].ctl_addr) {
+                dev_err(&pdev->dev, "failed to map IO/CTL base\n");
+                return -ENOMEM;
         }
 
         ae.port[0].altstatus_addr = ae.port[0].ctl_addr;
 
         pata_platform_setup_port(&ae.port[0], pdev->dev.platform_data);
 
-        if (unlikely(ata_device_add(&ae) == 0)) {
-                ret = -ENODEV;
-                goto add_failed;
-        }
+        if (unlikely(ata_device_add(&ae) == 0))
+                return -ENODEV;
 
         return 0;
-
-add_failed:
-        if (ae.port[0].ctl_addr && mmio)
-                iounmap((void __iomem *)ae.port[0].ctl_addr);
-bad_remap:
-        if (ae.port[0].cmd_addr && mmio)
-                iounmap((void __iomem *)ae.port[0].cmd_addr);
-
-        return ret;
 }
 
 /**