diff options
Diffstat (limited to 'arch/powerpc/platforms/85xx/mpc85xx_ads.c')
| -rw-r--r-- | arch/powerpc/platforms/85xx/mpc85xx_ads.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c index ba6798d4765423..b7821dbae00d6e 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_ads.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c @@ -67,6 +67,62 @@ static u_char mpc85xx_ads_openpic_initsenses[] __initdata = { 0x0, /* External 11: */ }; +#ifdef CONFIG_PCI +/* + * interrupt routing + */ + +int +mpc85xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) +{ + static char pci_irq_table[][4] = + /* + * This is little evil, but works around the fact + * that revA boards have IDSEL starting at 18 + * and others boards (older) start at 12 + * + * PCI IDSEL/INTPIN->INTLINE + * A B C D + */ + { + {PIRQA, PIRQB, PIRQC, PIRQD}, /* IDSEL 2 */ + {PIRQD, PIRQA, PIRQB, PIRQC}, + {PIRQC, PIRQD, PIRQA, PIRQB}, + {PIRQB, PIRQC, PIRQD, PIRQA}, /* IDSEL 5 */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {PIRQA, PIRQB, PIRQC, PIRQD}, /* IDSEL 12 */ + {PIRQD, PIRQA, PIRQB, PIRQC}, + {PIRQC, PIRQD, PIRQA, PIRQB}, + {PIRQB, PIRQC, PIRQD, PIRQA}, /* IDSEL 15 */ + {0, 0, 0, 0}, /* -- */ + {0, 0, 0, 0}, /* -- */ + {PIRQA, PIRQB, PIRQC, PIRQD}, /* IDSEL 18 */ + {PIRQD, PIRQA, PIRQB, PIRQC}, + {PIRQC, PIRQD, PIRQA, PIRQB}, + {PIRQB, PIRQC, PIRQD, PIRQA}, /* IDSEL 21 */ + }; + + const long min_idsel = 2, max_idsel = 21, irqs_per_slot = 4; + return PCI_IRQ_TABLE_LOOKUP; +} + +int +mpc85xx_exclude_device(u_char bus, u_char devfn) +{ + if (bus == 0 && PCI_SLOT(devfn) == 0) + return PCIBIOS_DEVICE_NOT_FOUND; + else + return PCIBIOS_SUCCESSFUL; +} + +#endif /* CONFIG_PCI */ + + void __init mpc85xx_ads_pic_init(void) { struct mpic *mpic1; @@ -110,6 +166,7 @@ void __init mpc85xx_ads_pic_init(void) static void __init mpc85xx_ads_setup_arch(void) { struct device_node *cpu; + struct device_node *np; if (ppc_md.progress) ppc_md.progress("mpc85xx_ads_setup_arch()", 0); @@ -125,6 +182,16 @@ static void __init mpc85xx_ads_setup_arch(void) loops_per_jiffy = 50000000 / HZ; of_node_put(cpu); } + +#ifdef CONFIG_PCI + for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) + add_bridge(np); + + ppc_md.pci_swizzle = common_swizzle; + ppc_md.pci_map_irq = mpc85xx_map_irq; + ppc_md.pci_exclude_device = mpc85xx_exclude_device; +#endif + #ifdef CONFIG_ROOT_NFS ROOT_DEV = Root_NFS; #else |