[PATCH 1/2] pci-phb: check for the 32-bit overflow
Nikunj A Dadhania
nikunj at linux.vnet.ibm.com
Wed Apr 22 20:57:19 AEST 2015
With the addition of 64-bit BARS and increase in the mmio address
space, the code was hitting this limit. The memory of pci devices
across the bridges were not accessible due to which the drivers
failed.
Signed-off-by: Nikunj A Dadhania <nikunj at linux.vnet.ibm.com>
---
board-qemu/slof/pci-phb.fs | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/board-qemu/slof/pci-phb.fs b/board-qemu/slof/pci-phb.fs
index 529772f..e307d95 100644
--- a/board-qemu/slof/pci-phb.fs
+++ b/board-qemu/slof/pci-phb.fs
@@ -258,7 +258,8 @@ setup-puid
decode-64 2 / dup >r \ Decode and calc size/2
pci-next-mem @ + dup pci-max-mem ! \ and calc max mem address
dup pci-next-mmio ! \ which is the same as MMIO base
- r> + pci-max-mmio ! \ calc max MMIO address
+ r> + FFFFFFFF min pci-max-mmio ! \ calc max MMIO address and
+ \ check the 32-bit boundary
ENDOF
3000000 OF \ 64-bit memory space?
decode-64 pci-next-mem64 !
--
1.8.3.1
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