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, 31 insertions, 30 deletions

diff --git a/drivers/ata/pata_mpiix.c b/drivers/ata/pata_mpiix.c
index c4a1b10f3bca..9837faf0f620 100644
--- a/drivers/ata/pata_mpiix.c
+++ b/drivers/ata/pata_mpiix.c
@@ -188,7 +188,7 @@ static struct ata_port_operations mpiix_port_ops = {
 
         .qc_prep        = ata_qc_prep,
         .qc_issue       = mpiix_qc_issue_prot,
-        .data_xfer      = ata_pio_data_xfer,
+        .data_xfer      = ata_data_xfer,
 
         .irq_handler    = ata_interrupt,
         .irq_clear      = ata_bmdma_irq_clear,
@@ -199,10 +199,11 @@ static struct ata_port_operations mpiix_port_ops = {
 static int mpiix_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
         /* Single threaded by the PCI probe logic */
-        static struct ata_probe_ent probe[2];
+        static struct ata_probe_ent probe;
         static int printed_version;
+        void __iomem *cmd_addr, *ctl_addr;
         u16 idetim;
-        int enabled;
+        int irq;
 
         if (!printed_version++)
                 dev_printk(KERN_DEBUG, &dev->dev, "version " DRV_VERSION "\n");
@@ -215,43 +216,43 @@ static int mpiix_init_one(struct pci_dev *dev, const struct pci_device_id *id)
         if (!(idetim & ENABLED))
                 return -ENODEV;
 
+        if (!(idetim & SECONDARY)) {
+                irq = 14;
+                cmd_addr = devm_ioport_map(&dev->dev, 0x1F0, 8);
+                ctl_addr = devm_ioport_map(&dev->dev, 0x3F6, 1);
+        } else {
+                irq = 15;
+                cmd_addr = devm_ioport_map(&dev->dev, 0x170, 8);
+                ctl_addr = devm_ioport_map(&dev->dev, 0x376, 1);
+        }
+
+        if (!cmd_addr || !ctl_addr)
+                return -ENOMEM;
+
         /* We do our own plumbing to avoid leaking special cases for whacko
            ancient hardware into the core code. There are two issues to
            worry about.  #1 The chip is a bridge so if in legacy mode and
            without BARs set fools the setup.  #2 If you pci_disable_device
            the MPIIX your box goes castors up */
 
-        INIT_LIST_HEAD(&probe[0].node);
-        probe[0].dev = pci_dev_to_dev(dev);
-        probe[0].port_ops = &mpiix_port_ops;
-        probe[0].sht = &mpiix_sht;
-        probe[0].pio_mask = 0x1F;
-        probe[0].irq = 14;
-        probe[0].irq_flags = SA_SHIRQ;
-        probe[0].port_flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST;
-        probe[0].n_ports = 1;
-        probe[0].port[0].cmd_addr = 0x1F0;
-        probe[0].port[0].ctl_addr = 0x3F6;
-        probe[0].port[0].altstatus_addr = 0x3F6;
-
-        /* The secondary lurks at different addresses but is otherwise
-           the same beastie */
-
-        INIT_LIST_HEAD(&probe[1].node);
-        probe[1] = probe[0];
-        probe[1].irq = 15;
-        probe[1].port[0].cmd_addr = 0x170;
-        probe[1].port[0].ctl_addr = 0x376;
-        probe[1].port[0].altstatus_addr = 0x376;
+        INIT_LIST_HEAD(&probe.node);
+        probe.dev = pci_dev_to_dev(dev);
+        probe.port_ops = &mpiix_port_ops;
+        probe.sht = &mpiix_sht;
+        probe.pio_mask = 0x1F;
+        probe.irq = irq;
+        probe.irq_flags = SA_SHIRQ;
+        probe.port_flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST;
+        probe.n_ports = 1;
+        probe.port[0].cmd_addr = cmd_addr;
+        probe.port[0].ctl_addr = ctl_addr;
+        probe.port[0].altstatus_addr = ctl_addr;
 
         /* Let libata fill in the port details */
-        ata_std_ports(&probe[0].port[0]);
-        ata_std_ports(&probe[1].port[0]);
+        ata_std_ports(&probe.port[0]);
 
         /* Now add the port that is active */
-        enabled = (idetim & SECONDARY) ? 1 : 0;
-
-        if (ata_device_add(&probe[enabled]))
+        if (ata_device_add(&probe))
                 return 0;
         return -ENODEV;
 }