Hi Stef
Felix Radensky wrote:
Hi Stef,
Stef van Os wrote:
Hello Felix,
I had a problem similar to this on the 440GX, the PCI code was not
sending type 1 transactions when scanning behind bridges. Perhaps you
could try this:
Index: linux/arch/powerpc/sysdev/ppc4xx_pci.c
===================================================================
--- linux/arch/powerpc/sysdev/ppc4xx_pci.c (revision 26)
+++ linux/arch/powerpc/sysdev/ppc4xx_pci.c (revision 27)
@@ -569,7 +569,7 @@
hose->last_busno = bus_range ? bus_range[1] : 0xff;
/* Setup config space */
- setup_indirect_pci(hose, rsrc_cfg.start, rsrc_cfg.start + 0x4,
0);
+ setup_indirect_pci(hose, rsrc_cfg.start, rsrc_cfg.start + 0x4,
PPC_INDIRECT_TYPE_SET_CFG_TYPE);
/* Disable all windows */
writel(0, reg + PCIX0_POM0SA);
With kind regards / Met vriendelijke groet,
Stef van Os
Prodrive B.V.
I think you patch is a valid one, and should be applied, but
unfortunately it doesn't fix by problem.
BTW, in u-boot transaction type bit is set correctly.
It seems I was wrong. I've manually applied the patch at the wrong
place. After patching the correct function
I'm not getting hard resets any more, which is a great improvement !
Thanks a lot, I really appreciate your help !
Unfortunately not all problems are gone. PLX is now identified
correctly, but device behind it is not detected,
although u-boot detects it correctly. See below.
PCI: Probing PCI hardware
pci_bus 0000:00: scanning bus
pci 0000:00:02.0: found [3388:0020] class 000604 header type 01
pci 0000:00:02.0: calling pcibios_fixup_resources+0x0/0xf4
pci 0000:00:02.0: calling fixup_ppc4xx_pci_bridge+0x0/0x154
pci 0000:00:02.0: calling quirk_resource_alignment+0x0/0x200
pci 0000:00:02.0: supports D1 D2
pci 0000:00:02.0: PME# supported from D0 D1 D2 D3hot
pci 0000:00:02.0: PME# disabled
pci_bus 0000:00: fixups for bus
pci 0000:00:02.0: scanning behind bridge, config 010100, pass 0
pci_bus 0000:01: scanning bus
pci 0000:01:02.0: found [3388:0020] class 000604 header type 01
pci 0000:01:02.0: calling pcibios_fixup_resources+0x0/0xf4
pci 0000:01:02.0: calling fixup_ppc4xx_pci_bridge+0x0/0x154
pci 0000:01:02.0: calling quirk_resource_alignment+0x0/0x200
pci 0000:01:02.0: supports D1 D2
pci 0000:01:02.0: PME# supported from D0 D1 D2 D3hot
pci 0000:01:02.0: PME# disabled
pci_bus 0000:01: fixups for bus
pci 0000:00:02.0: PCI bridge to [bus 01-01]
pci 0000:00:02.0: bridge window [mem 0x80000000-0x8c0fffff]
pci 0000:01:02.0: scanning behind bridge, config 010100, pass 0
pci 0000:01:02.0: bus configuration invalid, reconfiguring
pci 0000:01:02.0: scanning behind bridge, config 010100, pass 1
pci_bus 0000:01: bus scan returning with max=01
pci 0000:00:02.0: scanning behind bridge, config 010100, pass 1
pci_bus 0000:00: bus scan returning with max=01
pci 0000:00:02.0: disabling bridge window [mem 0xd80000000-0xd8c0fffff]
to [bus 01-01] (unused)
pci 0000:00:02.0: PCI bridge to [bus 01-01]
pci 0000:00:02.0: bridge window [io disabled]
pci 0000:00:02.0: bridge window [mem disabled]
pci 0000:00:02.0: bridge window [mem pref disabled]
pci_bus 0000:00: resource 0 [io 0x0000-0xffff]
pci_bus 0000:00: resource 1 [mem 0xd80000000-0xdffffffff]
pci_bus 0000:01: resource 1 [??? 57982058496-58184433663 flags 0x0]
Any ideas what could be wrong now ?
Thanks a lot.
Felix.
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