diff options
Diffstat (limited to 'arch/mips/pci/fixup-rbtx4927.c')
| -rw-r--r-- | arch/mips/pci/fixup-rbtx4927.c | 112 |
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; } |