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| author |   Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2007-11-08 22:09:11 +0100 |
|---|---|---|
| committer |   Ralf Baechle <ralf@linux-mips.org> | 2007-11-15 23:21:50 +0000 |
| commit | fcee3faf8339bb65660c9a22123f71aa0cc30514 (patch) | |
| tree | cd0f28ed904d6b52f613e6ef117838e8820215dc | |
| parent | [MIPS] Fix shadow register support. (diff) | |
| download | linux-dev-fcee3faf8339bb65660c9a22123f71aa0cc30514.tar.xz linux-dev-fcee3faf8339bb65660c9a22123f71aa0cc30514.zip | |
[MIPS] SNI PCIT CPLUS: workaround for b0rked irq wiring of onboard PCI bus 1
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/pci/fixup-sni.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/arch/mips/pci/fixup-sni.c b/arch/mips/pci/fixup-sni.c index a45bedd17233..5c8a79bb2661 100644 --- a/arch/mips/pci/fixup-sni.c +++ b/arch/mips/pci/fixup-sni.c @@ -113,6 +113,16 @@ static char irq_tab_pcit[13][5] __initdata = { { 0, INTA, INTB, INTC, INTD }, /* Slot 5 */ }; +static char irq_tab_pcit_cplus[13][5] __initdata = { + /* INTA INTB INTC INTD */ + { 0, 0, 0, 0, 0 }, /* HOST bridge */ + { 0, INTB, INTC, INTD, INTA }, /* PCI Slot 9 */ + { 0, 0, 0, 0, 0 }, /* PCI-EISA */ + { 0, 0, 0, 0, 0 }, /* Unused */ + { 0, INTA, INTB, INTC, INTD }, /* PCI-PCI bridge */ + { 0, INTB, INTC, INTD, INTA }, /* fixup */ +}; + static inline int is_rm300_revd(void) { unsigned char csmsr = *(volatile unsigned char *)PCIMT_CSMSR; @@ -123,8 +133,19 @@ static inline int is_rm300_revd(void) int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) { switch (sni_brd_type) { - case SNI_BRD_PCI_TOWER: case SNI_BRD_PCI_TOWER_CPLUS: + if (slot == 4) { + /* + * SNI messed up interrupt wiring for onboard + * PCI bus 1; we need to fix this up here + */ + while (dev && dev->bus->number != 1) + dev = dev->bus->self; + if (dev && dev->devfn >= PCI_DEVFN(4, 0)) + slot = 5; + } + return irq_tab_pcit_cplus[slot][pin]; + case SNI_BRD_PCI_TOWER: return irq_tab_pcit[slot][pin]; case SNI_BRD_PCI_MTOWER: |