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[POWERPC] 4xx: PCI-E Link setup improvements

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This improves the way the 4xx PCI-E code handles checking for a link
and adds explicit testing of CRS result codes on config space accesses.

This should make it more reliable.

Also, bridges with no link are now still created, though config space
accesses beyond the root complex are filtered. This is one step toward
eventually supporting hotplug.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
This commit is contained in:
Benjamin Herrenschmidt
2007-12-21 15:39:36 +11:00
committed by Josh Boyer
parent 5be9419ac6
commit 035ee4282d
2 changed files with 134 additions and 90 deletions
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2
arch/powerpc/sysdev/ppc4xx_pci.h
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@@ -330,6 +330,8 @@
/*
* Config space register offsets
*/
#define PECFG_ECRTCTL 0x074
#define PECFG_BAR0LMPA 0x210
#define PECFG_BAR0HMPA 0x214
#define PECFG_BAR1MPA 0x218