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Subject[PATCH 1/1] - sgiioc4: fixup use of mmio ops
sgiioc4.c had been recently converted to using mmio ops.
There are still a few issues to cleanup.

Signed-off-by: jpk@sgi.com

--- linux-2.6.orig/drivers/ide/pci/sgiioc4.c 2006-07-11 11:34:42.135934603 -0500
+++ linux-2.6/drivers/ide/pci/sgiioc4.c 2006-07-12 09:17:02.316590824 -0500
@@ -372,7 +372,7 @@ ide_dma_sgiioc4(ide_hwif_t * hwif, unsig
printk(KERN_INFO "%s: BM-DMA at 0x%04lx-0x%04lx\n", hwif->name,
dma_base, dma_base + num_ports - 1);

- if (!request_region(dma_base, num_ports, hwif->name)) {
+ if (!request_mem_region(dma_base, num_ports, hwif->name)) {
printk(KERN_ERR
"%s(%s) -- ERROR, Addresses 0x%p to 0x%p "
"ALREADY in use\n",
@@ -381,7 +381,7 @@ ide_dma_sgiioc4(ide_hwif_t * hwif, unsig
goto dma_alloc_failure;
}

- hwif->dma_base = dma_base;
+ hwif->dma_base = (unsigned long) ioremap(dma_base, num_ports);
hwif->dmatable_cpu = pci_alloc_consistent(hwif->pci_dev,
IOC4_PRD_ENTRIES * IOC4_PRD_BYTES,
&hwif->dmatable_dma);
@@ -607,18 +607,14 @@ ide_init_sgiioc4(ide_hwif_t * hwif)
hwif->ide_dma_lostirq = &sgiioc4_ide_dma_lostirq;
hwif->ide_dma_timeout = &__ide_dma_timeout;

- /*
- * The IOC4 uses MMIO rather than Port IO.
- * It also needs special workarounds for INB.
- */
- default_hwif_mmiops(hwif);
hwif->INB = &sgiioc4_INB;
}

static int __devinit
sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
{
- unsigned long base, ctl, dma_base, irqport;
+ unsigned long ctl, dma_base, irqport;
+ unsigned long bar0, cmd_base, cmd_phys_base, virt_base;
ide_hwif_t *hwif;
int h;

@@ -636,23 +632,27 @@ sgiioc4_ide_setup_pci_device(struct pci_
}

/* Get the CmdBlk and CtrlBlk Base Registers */
- base = pci_resource_start(dev, 0) + IOC4_CMD_OFFSET;
- ctl = pci_resource_start(dev, 0) + IOC4_CTRL_OFFSET;
- irqport = pci_resource_start(dev, 0) + IOC4_INTR_OFFSET;
+ bar0 = pci_resource_start(dev, 0);
+ virt_base = (unsigned long) ioremap(bar0, pci_resource_len(dev, 0));
+ cmd_base = virt_base + IOC4_CMD_OFFSET;
+ ctl = virt_base + IOC4_CTRL_OFFSET;
+ irqport = virt_base + IOC4_INTR_OFFSET;
dma_base = pci_resource_start(dev, 0) + IOC4_DMA_OFFSET;

- if (!request_region(base, IOC4_CMD_CTL_BLK_SIZE, hwif->name)) {
+ cmd_phys_base = bar0 + IOC4_CMD_OFFSET;
+ if (!request_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE,
+ hwif->name)) {
printk(KERN_ERR
- "%s : %s -- ERROR, Port Addresses "
+ "%s : %s -- ERROR, Addresses "
"0x%p to 0x%p ALREADY in use\n",
- __FUNCTION__, hwif->name, (void *) base,
- (void *) base + IOC4_CMD_CTL_BLK_SIZE);
+ __FUNCTION__, hwif->name, (void *) cmd_phys_base,
+ (void *) cmd_phys_base + IOC4_CMD_CTL_BLK_SIZE);
return -ENOMEM;
}

- if (hwif->io_ports[IDE_DATA_OFFSET] != base) {
+ if (hwif->io_ports[IDE_DATA_OFFSET] != cmd_base) {
/* Initialize the IO registers */
- sgiioc4_init_hwif_ports(&hwif->hw, base, ctl, irqport);
+ sgiioc4_init_hwif_ports(&hwif->hw, cmd_base, ctl, irqport);
memcpy(hwif->io_ports, hwif->hw.io_ports,
sizeof (hwif->io_ports));
hwif->noprobe = !hwif->io_ports[IDE_DATA_OFFSET];
@@ -665,6 +665,9 @@ sgiioc4_ide_setup_pci_device(struct pci_
hwif->cds = (struct ide_pci_device_s *) d;
hwif->gendev.parent = &dev->dev;/* setup proper ancestral information */

+ /* The IOC4 uses MMIO rather than Port IO. */
+ default_hwif_mmiops(hwif);
+
/* Initializing chipset IRQ Registers */
hwif->OUTL(0x03, irqport + IOC4_INTR_SET * 4);

-
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