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, 22 insertions, 24 deletions

diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c
index 00f2465dcdce..4a25093b2dda 100644
--- a/drivers/ata/sata_sil.c
+++ b/drivers/ata/sata_sil.c
@@ -49,6 +49,8 @@
 #define DRV_VERSION     "2.0"
 
 enum {
+        SIL_MMIO_BAR            = 5,
+
         /*
          * host flags
          */
@@ -200,7 +202,7 @@ static const struct ata_port_operations sil_ops = {
         .bmdma_status           = ata_bmdma_status,
         .qc_prep                = ata_qc_prep,
         .qc_issue               = ata_qc_issue_prot,
-        .data_xfer              = ata_mmio_data_xfer,
+        .data_xfer              = ata_data_xfer,
         .freeze                 = sil_freeze,
         .thaw                   = sil_thaw,
         .error_handler          = ata_bmdma_error_handler,
@@ -295,7 +297,8 @@ static void sil_post_set_mode (struct ata_port *ap)
 {
         struct ata_host *host = ap->host;
         struct ata_device *dev;
-        void __iomem *addr = host->mmio_base + sil_port[ap->port_no].xfer_mode;
+        void __iomem *mmio_base = host->iomap[SIL_MMIO_BAR];
+        void __iomem *addr = mmio_base + sil_port[ap->port_no].xfer_mode;
         u32 tmp, dev_mode[2];
         unsigned int i;
 
@@ -318,9 +321,9 @@ static void sil_post_set_mode (struct ata_port *ap)
         readl(addr);    /* flush */
 }
 
-static inline unsigned long sil_scr_addr(struct ata_port *ap, unsigned int sc_reg)
+static inline void __iomem *sil_scr_addr(struct ata_port *ap, unsigned int sc_reg)
 {
-        unsigned long offset = ap->ioaddr.scr_addr;
+        void __iomem *offset = ap->ioaddr.scr_addr;
 
         switch (sc_reg) {
         case SCR_STATUS:
@@ -339,7 +342,7 @@ static inline unsigned long sil_scr_addr(struct ata_port *ap, unsigned int sc_re
 
 static u32 sil_scr_read (struct ata_port *ap, unsigned int sc_reg)
 {
-        void __iomem *mmio = (void __iomem *) sil_scr_addr(ap, sc_reg);
+        void __iomem *mmio = sil_scr_addr(ap, sc_reg);
         if (mmio)
                 return readl(mmio);
         return 0xffffffffU;
@@ -347,7 +350,7 @@ static u32 sil_scr_read (struct ata_port *ap, unsigned int sc_reg)
 
 static void sil_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
 {
-        void __iomem *mmio = (void __iomem *) sil_scr_addr(ap, sc_reg);
+        void __iomem *mmio = sil_scr_addr(ap, sc_reg);
         if (mmio)
                 writel(val, mmio);
 }
@@ -442,7 +445,7 @@ static void sil_host_intr(struct ata_port *ap, u32 bmdma2)
 static irqreturn_t sil_interrupt(int irq, void *dev_instance)
 {
         struct ata_host *host = dev_instance;
-        void __iomem *mmio_base = host->mmio_base;
+        void __iomem *mmio_base = host->iomap[SIL_MMIO_BAR];
         int handled = 0;
         int i;
 
@@ -474,7 +477,7 @@ static irqreturn_t sil_interrupt(int irq, void *dev_instance)
 
 static void sil_freeze(struct ata_port *ap)
 {
-        void __iomem *mmio_base = ap->host->mmio_base;
+        void __iomem *mmio_base = ap->host->iomap[SIL_MMIO_BAR];
         u32 tmp;
 
         /* global IRQ mask doesn't block SATA IRQ, turn off explicitly */
@@ -489,7 +492,7 @@ static void sil_freeze(struct ata_port *ap)
 
 static void sil_thaw(struct ata_port *ap)
 {
-        void __iomem *mmio_base = ap->host->mmio_base;
+        void __iomem *mmio_base = ap->host->iomap[SIL_MMIO_BAR];
         u32 tmp;
 
         /* clear IRQ */
@@ -621,7 +624,6 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
         static int printed_version;
         struct device *dev = &pdev->dev;
         struct ata_probe_ent *probe_ent;
-        unsigned long base;
         void __iomem *mmio_base;
         int rc;
         unsigned int i;
@@ -633,11 +635,11 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
         if (rc)
                 return rc;
 
-        rc = pci_request_regions(pdev, DRV_NAME);
-        if (rc) {
+        rc = pcim_iomap_regions(pdev, 1 << SIL_MMIO_BAR, DRV_NAME);
+        if (rc == -EBUSY)
                 pcim_pin_device(pdev);
+        if (rc)
                 return rc;
-        }
 
         rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
         if (rc)
@@ -662,20 +664,16 @@ static int sil_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
         probe_ent->irq_flags = IRQF_SHARED;
         probe_ent->port_flags = sil_port_info[ent->driver_data].flags;
 
-        mmio_base = pcim_iomap(pdev, 5, 0);
-        if (mmio_base == NULL)
-                return -ENOMEM;
-
-        probe_ent->mmio_base = mmio_base;
+        probe_ent->iomap = pcim_iomap_table(pdev);
 
-        base = (unsigned long) mmio_base;
+        mmio_base = probe_ent->iomap[SIL_MMIO_BAR];
 
         for (i = 0; i < probe_ent->n_ports; i++) {
-                probe_ent->port[i].cmd_addr = base + sil_port[i].tf;
+                probe_ent->port[i].cmd_addr = mmio_base + sil_port[i].tf;
                 probe_ent->port[i].altstatus_addr =
-                probe_ent->port[i].ctl_addr = base + sil_port[i].ctl;
-                probe_ent->port[i].bmdma_addr = base + sil_port[i].bmdma;
-                probe_ent->port[i].scr_addr = base + sil_port[i].scr;
+                probe_ent->port[i].ctl_addr = mmio_base + sil_port[i].ctl;
+                probe_ent->port[i].bmdma_addr = mmio_base + sil_port[i].bmdma;
+                probe_ent->port[i].scr_addr = mmio_base + sil_port[i].scr;
                 ata_std_ports(&probe_ent->port[i]);
         }
 
@@ -702,7 +700,7 @@ static int sil_pci_device_resume(struct pci_dev *pdev)
                 return rc;
 
         sil_init_controller(pdev, host->n_ports, host->ports[0]->flags,
-                            host->mmio_base);
+                            host->iomap[SIL_MMIO_BAR]);
         ata_host_resume(host);
 
         return 0;