Messages in this thread Patch in this message | | | Subject | [PATCH] Fix PCI<->OF matching on G5 AGP bus | From | Benjamin Herrenschmidt <> | Date | Tue, 09 Mar 2004 20:26:20 +1100 |
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Strangely, I though I fixed that a long time ago, but it was still broken in the current tree... So drivers like radeonfb fail to find the OF device matching a given PCI device on the G5 AGP bus because of some bus renumbering tricks. This patch fixes the problem by fixing the bus numbers in the OF node. This corrects radeonfb and other drivers looking for EDID / PLL datas in the OF node.
===== arch/ppc64/kernel/pmac_pci.c 1.3 vs edited ===== --- 1.3/arch/ppc64/kernel/pmac_pci.c Mon Mar 1 11:50:37 2004 +++ edited/arch/ppc64/kernel/pmac_pci.c Tue Mar 9 20:20:53 2004 @@ -719,6 +719,17 @@ /* Setup the linkage between OF nodes and PHBs */ pci_devs_phb_init(); + /* Fixup the PCI<->OF mapping for U3 AGP due to bus renumbering. We + * assume there is no P2P bridge on the AGP bus, which should be a + * safe assumptions hopefully. + */ + if (u3_agp) { + struct device_node *np = u3_agp->arch_data; + np->busno = 0xf0; + for (np = np->child; np; np = np->sibling) + np->busno = 0xf0; + } + pmac_check_ht_link(); /* Tell pci.c to use the common resource allocation mecanism */
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