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Diffstat (limited to 'arch/mips/pci/fixup-rbtx4927.c')
-rw-r--r--arch/mips/pci/fixup-rbtx4927.c112
1 files changed, 26 insertions, 86 deletions
diff --git a/arch/mips/pci/fixup-rbtx4927.c b/arch/mips/pci/fixup-rbtx4927.c
index 26013badfe1..abab4852d15 100644
--- a/arch/mips/pci/fixup-rbtx4927.c
+++ b/arch/mips/pci/fixup-rbtx4927.c
@@ -33,102 +33,42 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/types.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
+#include <asm/txx9/pci.h>
+#include <asm/txx9/rbtx4927.h>
-#include <asm/txx9/tx4927.h>
-
-#undef DEBUG
-#ifdef DEBUG
-#define DBG(x...) printk(x)
-#else
-#define DBG(x...)
-#endif
-
-/* look up table for backplane pci irq for slots 17-20 by pin # */
-static unsigned char backplane_pci_irq[4][4] = {
- /* PJ6 SLOT: 17, PIN: 1 */ {TX4927_IRQ_IOC_PCIA,
- /* PJ6 SLOT: 17, PIN: 2 */
- TX4927_IRQ_IOC_PCIB,
- /* PJ6 SLOT: 17, PIN: 3 */
- TX4927_IRQ_IOC_PCIC,
- /* PJ6 SLOT: 17, PIN: 4 */
- TX4927_IRQ_IOC_PCID},
- /* SB SLOT: 18, PIN: 1 */ {TX4927_IRQ_IOC_PCIB,
- /* SB SLOT: 18, PIN: 2 */
- TX4927_IRQ_IOC_PCIC,
- /* SB SLOT: 18, PIN: 3 */
- TX4927_IRQ_IOC_PCID,
- /* SB SLOT: 18, PIN: 4 */
- TX4927_IRQ_IOC_PCIA},
- /* PJ5 SLOT: 19, PIN: 1 */ {TX4927_IRQ_IOC_PCIC,
- /* PJ5 SLOT: 19, PIN: 2 */
- TX4927_IRQ_IOC_PCID,
- /* PJ5 SLOT: 19, PIN: 3 */
- TX4927_IRQ_IOC_PCIA,
- /* PJ5 SLOT: 19, PIN: 4 */
- TX4927_IRQ_IOC_PCIB},
- /* PJ4 SLOT: 20, PIN: 1 */ {TX4927_IRQ_IOC_PCID,
- /* PJ4 SLOT: 20, PIN: 2 */
- TX4927_IRQ_IOC_PCIA,
- /* PJ4 SLOT: 20, PIN: 3 */
- TX4927_IRQ_IOC_PCIB,
- /* PJ4 SLOT: 20, PIN: 4 */
- TX4927_IRQ_IOC_PCIC}
-};
-
-static int pci_get_irq(const struct pci_dev *dev, int pin)
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
unsigned char irq = pin;
- DBG("pci_get_irq: pin is %d\n", pin);
/* IRQ rotation */
irq--; /* 0-3 */
- if (dev->bus->parent == NULL &&
- PCI_SLOT(dev->devfn) == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
- printk("Onboard PCI_SLOT(dev->devfn) is %d\n",
- PCI_SLOT(dev->devfn));
- /* IDSEL=A23 is tx4927 onboard pci slot */
- irq = (irq + PCI_SLOT(dev->devfn)) % 4;
- irq++; /* 1-4 */
- DBG("irq is now %d\n", irq);
-
- switch (irq) {
- case 1:
- irq = TX4927_IRQ_IOC_PCIA;
- break;
- case 2:
- irq = TX4927_IRQ_IOC_PCIB;
- break;
- case 3:
- irq = TX4927_IRQ_IOC_PCIC;
- break;
- case 4:
- irq = TX4927_IRQ_IOC_PCID;
- break;
- }
+ if (slot == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) {
+ /* PCI CardSlot (IDSEL=A23) */
+ /* PCIA => PCIA */
+ irq = (irq + 0 + slot) % 4;
} else {
/* PCI Backplane */
- DBG("PCI Backplane PCI_SLOT(dev->devfn) is %d\n",
- PCI_SLOT(dev->devfn));
- irq = backplane_pci_irq[PCI_SLOT(dev->devfn) - 17][irq];
+ if (txx9_pci_option & TXX9_PCI_OPT_PICMG)
+ irq = (irq + 33 - slot) % 4;
+ else
+ irq = (irq + 3 + slot) % 4;
}
- DBG("assigned irq %d\n", irq);
- return irq;
-}
-
-int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
-{
- unsigned char irq;
-
- printk("PCI Setup for pin %d \n", pin);
-
- if (dev->device == 0x9130) /* IDE */
- irq = 14;
- else
- irq = pci_get_irq(dev, pin);
+ irq++; /* 1-4 */
+ switch (irq) {
+ case 1:
+ irq = RBTX4927_IRQ_IOC_PCIA;
+ break;
+ case 2:
+ irq = RBTX4927_IRQ_IOC_PCIB;
+ break;
+ case 3:
+ irq = RBTX4927_IRQ_IOC_PCIC;
+ break;
+ case 4:
+ irq = RBTX4927_IRQ_IOC_PCID;
+ break;
+ }
return irq;
}