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[POWERPC] Cell "Spider" MMIO workarounds
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Sat, 11 Nov 2006 06:25:12 +0000 (17:25 +1100)
committerPaul Mackerras <paulus@samba.org>
Mon, 4 Dec 2006 09:38:54 +0000 (20:38 +1100)
commita53788adf1a2049e10ee141446df61354c309c4a
treebc9e7978ce79a2d5475b16d51b33c9419991c5c9tree | snapshot
parentbdc6618f84b66cba5d7fdaf75cf8c047e4000eeecommit | diff
[POWERPC] Cell "Spider" MMIO workarounds

This patch implements a workaround for a Spider PCI host bridge bug
where it doesn't enforce some of the PCI ordering rules unless some
manual manipulation of a special register is done. In order to be
fully compliant with the PCI spec, I do this on every MMIO read
operation.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/Kconfig diff | blob | history
arch/powerpc/platforms/cell/Makefile diff | blob | history
arch/powerpc/platforms/cell/io-workarounds.c [new file with mode: 0644] blob
Linux Kernel Source Tree.