ide: add ide_init_port_hw() helper

* Add ide_init_port_hw() helper.

* rapide.c: convert rapide_locate_hwif() to rapide_setup_ports()
  and use ide_init_port_hw().

* ide_platform.c: convert plat_ide_locate_hwif() to plat_ide_setup_ports()
  and use ide_init_port_hw().

* sgiioc4.c: use ide_init_port_hw().

* pmac.c: add 'hw_regs_t *hw' argument to pmac_ide_setup_device(),
  setup 'hw' in pmac_ide_{macio,pci}_attach() and use ide_init_port_hw()
  in pmac_ide_setup_device().

This patch is a preparation for the future changes in the IDE probing code.

There should be no functionality changes caused by this patch.

Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Jeremy Higdon <jeremy@sgi.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

6 files changed, 81 insertions, 66 deletions

diff --git a/drivers/ide/arm/rapide.c b/drivers/ide/arm/rapide.c
index c709d37ec095..0267467d1796 100644
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -13,26 +13,18 @@
 
 #include <asm/ecard.h>
 
-static ide_hwif_t *
-rapide_locate_hwif(void __iomem *base, void __iomem *ctrl, unsigned int sz, int irq)
+static void rapide_setup_ports(hw_regs_t *hw, void __iomem *base,
+                               void __iomem *ctrl, unsigned int sz, int irq)
 {
         unsigned long port = (unsigned long)base;
-        ide_hwif_t *hwif = ide_find_port(port);
         int i;
 
-        if (hwif == NULL)
-                goto out;
-
         for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
-                hwif->io_ports[i] = port;
+                hw->io_ports[i] = port;
                 port += sz;
         }
-        hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
-        hwif->irq = irq;
-        hwif->mmio = 1;
-        default_hwif_mmiops(hwif);
-out:
-        return hwif;
+        hw->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
+        hw->irq = irq;
 }
 
 static int __devinit
@@ -42,6 +34,7 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
         void __iomem *base;
         int ret;
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+        hw_regs_t hw;
 
         ret = ecard_request_resources(ec);
         if (ret)
@@ -53,12 +46,19 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
                 goto release;
         }
 
-        hwif = rapide_locate_hwif(base, base + 0x818, 1 << 6, ec->irq);
+        hwif = ide_find_port((unsigned long)base);
         if (hwif) {
-                hwif->chipset = ide_generic;
+                memset(&hw, 0, sizeof(hw));
+                rapide_setup_ports(&hw, base, base + 0x818, 1 << 6, ec->irq);
+                hw.chipset = ide_generic;
+                hw.dev = &ec->dev;
+
+                ide_init_port_hw(hwif, &hw);
+
+                hwif->mmio = 1;
+                default_hwif_mmiops(hwif);
+
                 hwif->hwif_data = base;
-                hwif->gendev.parent = &ec->dev;
-                hwif->noprobe = 0;
 
                 idx[0] = hwif->index;
 
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 8ef521f66f87..98bd45e8c175 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -675,6 +675,17 @@ void ide_setup_ports (	hw_regs_t *hw,
  */
 }
 
+void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
+{
+        memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports));
+        hwif->irq = hw->irq;
+        hwif->noprobe = 0;
+        hwif->chipset = hw->chipset;
+        hwif->gendev.parent = hw->dev;
+        hwif->ack_intr = hw->ack_intr;
+}
+EXPORT_SYMBOL_GPL(ide_init_port_hw);
+
 /**
  *      ide_register_hw         -       register IDE interface
  *      @hw: hardware registers
@@ -729,13 +740,9 @@ found:
         }
         if (hwif->present)
                 return -1;
-        memcpy(hwif->io_ports, hw->io_ports, sizeof(hwif->io_ports));
-        hwif->irq = hw->irq;
-        hwif->noprobe = 0;
+
+        ide_init_port_hw(hwif, hw);
         hwif->quirkproc = quirkproc;
-        hwif->chipset = hw->chipset;
-        hwif->gendev.parent = hw->dev;
-        hwif->ack_intr = hw->ack_intr;
 
         if (initializing == 0) {
                 u8 idx[4] = { index, 0xff, 0xff, 0xff };
diff --git a/drivers/ide/legacy/ide_platform.c b/drivers/ide/legacy/ide_platform.c
index 7bb79f53dac8..69a0fb0e564f 100644
--- a/drivers/ide/legacy/ide_platform.c
+++ b/drivers/ide/legacy/ide_platform.c
@@ -28,39 +28,27 @@ static struct {
         int index;
 } hwif_prop;
 
-static ide_hwif_t *__devinit plat_ide_locate_hwif(void __iomem *base,
-            void __iomem *ctrl, struct pata_platform_info *pdata, int irq,
-            int mmio)
+static void __devinit plat_ide_setup_ports(hw_regs_t *hw,
+                                           void __iomem *base,
+                                           void __iomem *ctrl,
+                                           struct pata_platform_info *pdata,
+                                           int irq)
 {
         unsigned long port = (unsigned long)base;
-        ide_hwif_t *hwif = ide_find_port(port);
         int i;
 
-        if (hwif == NULL)
-                goto out;
-
-        hwif->io_ports[IDE_DATA_OFFSET] = port;
+        hw->io_ports[IDE_DATA_OFFSET] = port;
 
         port += (1 << pdata->ioport_shift);
         for (i = IDE_ERROR_OFFSET; i <= IDE_STATUS_OFFSET;
              i++, port += (1 << pdata->ioport_shift))
-                hwif->io_ports[i] = port;
-
-        hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
+                hw->io_ports[i] = port;
 
-        hwif->irq = irq;
+        hw->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
 
-        hwif->chipset = ide_generic;
+        hw->irq = irq;
 
-        if (mmio) {
-                hwif->mmio = 1;
-                default_hwif_mmiops(hwif);
-        }
-
-        hwif_prop.hwif = hwif;
-        hwif_prop.index = hwif->index;
-out:
-        return hwif;
+        hw->chipset = ide_generic;
 }
 
 static int __devinit plat_ide_probe(struct platform_device *pdev)
@@ -71,6 +59,7 @@ static int __devinit plat_ide_probe(struct platform_device *pdev)
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
         int ret = 0;
         int mmio = 0;
+        hw_regs_t hw;
 
         pdata = pdev->dev.platform_data;
 
@@ -106,15 +95,27 @@ static int __devinit plat_ide_probe(struct platform_device *pdev)
                         res_alt->start, res_alt->end - res_alt->start + 1);
         }
 
-        hwif = plat_ide_locate_hwif(hwif_prop.plat_ide_mapbase,
-                 hwif_prop.plat_ide_alt_mapbase, pdata, res_irq->start, mmio);
-
+        hwif = ide_find_port((unsigned long)hwif_prop.plat_ide_mapbase);
         if (!hwif) {
                 ret = -ENODEV;
                 goto out;
         }
-        hwif->gendev.parent = &pdev->dev;
-        hwif->noprobe = 0;
+
+        memset(&hw, 0, sizeof(hw));
+        plat_ide_setup_ports(&hw, hwif_prop.plat_ide_mapbase,
+                             hwif_prop.plat_ide_alt_mapbase,
+                             pdata, res_irq->start);
+        hw.dev = &pdev->dev;
+
+        ide_init_port_hw(hwif, &hw);
+
+        if (mmio) {
+                hwif->mmio = 1;
+                default_hwif_mmiops(hwif);
+        }
+
+        hwif_prop.hwif = hwif;
+        hwif_prop.index = hwif->index;
 
         idx[0] = hwif->index;
 
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index b188efcd3551..9e0be7d54980 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -636,14 +636,13 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
         /* Initialize the IO registers */
         memset(&hw, 0, sizeof(hw));
         sgiioc4_init_hwif_ports(&hw, cmd_base, ctl, irqport);
-        memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
-        hwif->noprobe = 0;
+        hw.irq = dev->irq;
+        hw.chipset = ide_pci;
+        hw.dev = &dev->dev;
+        ide_init_port_hw(hwif, &hw);
 
-        hwif->irq = dev->irq;
-        hwif->chipset = ide_pci;
         hwif->pci_dev = dev;
         hwif->channel = 0;      /* Single Channel chip */
-        hwif->gendev.parent = &dev->dev;/* setup proper ancestral information */
 
         /* The IOC4 uses MMIO rather than Port IO. */
         default_hwif_mmiops(hwif);
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 6a4b0d479897..36e4b9570746 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -1012,12 +1012,11 @@ pmac_ide_do_resume(ide_hwif_t *hwif)
  * rare machines unfortunately, but it's better this way.
  */
 static int
-pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
+pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif, hw_regs_t *hw)
 {
         struct device_node *np = pmif->node;
         const int *bidp;
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-        hw_regs_t hw;
 
         pmif->cable_80 = 0;
         pmif->broken_dma = pmif->broken_dma_warn = 0;
@@ -1103,11 +1102,9 @@ pmac_ide_setup_device(pmac_ide_hwif_t *pmif, ide_hwif_t *hwif)
         /* Tell common code _not_ to mess with resources */
         hwif->mmio = 1;
         hwif->hwif_data = pmif;
-        memset(&hw, 0, sizeof(hw));
-        pmac_ide_init_hwif_ports(&hw, pmif->regbase, 0, &hwif->irq);
-        memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports));
-        hwif->chipset = ide_pmac;
-        hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET] || pmif->mediabay;
+        hw->chipset = ide_pmac;
+        ide_init_port_hw(hwif, hw);
+        hwif->noprobe = pmif->mediabay;
         hwif->hold = pmif->mediabay;
         hwif->cbl = pmif->cable_80 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
         hwif->drives[0].unmask = 1;
@@ -1163,6 +1160,7 @@ pmac_ide_macio_attach(struct macio_dev *mdev, const struct of_device_id *match)
         ide_hwif_t *hwif;
         pmac_ide_hwif_t *pmif;
         int i, rc;
+        hw_regs_t hw;
 
         i = 0;
         while (i < MAX_HWIFS && (ide_hwifs[i].io_ports[IDE_DATA_OFFSET] != 0
@@ -1205,7 +1203,6 @@ pmac_ide_macio_attach(struct macio_dev *mdev, const struct of_device_id *match)
         regbase = (unsigned long) base;
 
         hwif->pci_dev = mdev->bus->pdev;
-        hwif->gendev.parent = &mdev->ofdev.dev;
 
         pmif->mdev = mdev;
         pmif->node = mdev->ofdev.node;
@@ -1223,7 +1220,12 @@ pmac_ide_macio_attach(struct macio_dev *mdev, const struct of_device_id *match)
 #endif /* CONFIG_BLK_DEV_IDEDMA_PMAC */
         dev_set_drvdata(&mdev->ofdev.dev, hwif);
 
-        rc = pmac_ide_setup_device(pmif, hwif);
+        memset(&hw, 0, sizeof(hw));
+        pmac_ide_init_hwif_ports(&hw, pmif->regbase, 0, NULL);
+        hw.irq = irq;
+        hw.dev = &mdev->ofdev.dev;
+
+        rc = pmac_ide_setup_device(pmif, hwif, &hw);
         if (rc != 0) {
                 /* The inteface is released to the common IDE layer */
                 dev_set_drvdata(&mdev->ofdev.dev, NULL);
@@ -1282,6 +1284,7 @@ pmac_ide_pci_attach(struct pci_dev *pdev, const struct pci_device_id *id)
         void __iomem *base;
         unsigned long rbase, rlen;
         int i, rc;
+        hw_regs_t hw;
 
         np = pci_device_to_OF_node(pdev);
         if (np == NULL) {
@@ -1315,7 +1318,6 @@ pmac_ide_pci_attach(struct pci_dev *pdev, const struct pci_device_id *id)
         }
 
         hwif->pci_dev = pdev;
-        hwif->gendev.parent = &pdev->dev;
         pmif->mdev = NULL;
         pmif->node = np;
 
@@ -1332,7 +1334,12 @@ pmac_ide_pci_attach(struct pci_dev *pdev, const struct pci_device_id *id)
 
         pci_set_drvdata(pdev, hwif);
 
-        rc = pmac_ide_setup_device(pmif, hwif);
+        memset(&hw, 0, sizeof(hw));
+        pmac_ide_init_hwif_ports(&hw, pmif->regbase, 0, NULL);
+        hw.irq = pdev->irq;
+        hw.dev = &pdev->dev;
+
+        rc = pmac_ide_setup_device(pmif, hwif, &hw);
         if (rc != 0) {
                 /* The inteface is released to the common IDE layer */
                 pci_set_drvdata(pdev, NULL);
diff --git a/include/linux/ide.h b/include/linux/ide.h
index ce9b16f38c08..de94a526ef9e 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -198,6 +198,7 @@ typedef struct hw_regs_s {
 } hw_regs_t;
 
 struct hwif_s * ide_find_port(unsigned long);
+void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
 
 struct ide_drive_s;
 int ide_register_hw(hw_regs_t *, void (*)(struct ide_drive_s *), int,