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authorKumar Gala <galak@gate.crashing.org>2005-12-13 14:46:29 -0600
committerPaul Mackerras <paulus@samba.org>2006-01-09 14:54:06 +1100
commitcd0c7f06803be06a5cf4564aa5a900f4b6aea603 (patch)
tree23c89e6dde3b316aea54890e7c605ec8a5574716
parent31087d7d49bf5fc9cbc2c4852a079213755e8733 (diff)
downloadop-kernel-dev-cd0c7f06803be06a5cf4564aa5a900f4b6aea603.zip
op-kernel-dev-cd0c7f06803be06a5cf4564aa5a900f4b6aea603.tar.gz
[PATCH] powerpc: Detect prefetchable windows in pci_process_bridge_OF_ranges
Added the ability to determine if an outbound window in the PCI host controller is for prefetchable memory and report it as such. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/ppc/kernel/pci.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/ppc/kernel/pci.c b/arch/ppc/kernel/pci.c
index af36400..8de3203 100644
--- a/arch/ppc/kernel/pci.c
+++ b/arch/ppc/kernel/pci.c
@@ -941,7 +941,7 @@ pci_process_bridge_OF_ranges(struct pci_controller *hose,
while (ranges && (rlen -= np * sizeof(unsigned int)) >= 0) {
res = NULL;
size = ranges[na+4];
- switch (ranges[0] >> 24) {
+ switch ((ranges[0] >> 24) & 0x3) {
case 1: /* I/O space */
if (ranges[2] != 0)
break;
@@ -955,6 +955,8 @@ pci_process_bridge_OF_ranges(struct pci_controller *hose,
res = &hose->io_resource;
res->flags = IORESOURCE_IO;
res->start = ranges[2];
+ DBG("PCI: IO 0x%lx -> 0x%lx\n",
+ res->start, res->start + size - 1);
break;
case 2: /* memory space */
memno = 0;
@@ -972,7 +974,11 @@ pci_process_bridge_OF_ranges(struct pci_controller *hose,
if (memno < 3) {
res = &hose->mem_resources[memno];
res->flags = IORESOURCE_MEM;
+ if(ranges[0] & 0x40000000)
+ res->flags |= IORESOURCE_PREFETCH;
res->start = ranges[na+2];
+ DBG("PCI: MEM[%d] 0x%lx -> 0x%lx\n", memno,
+ res->start, res->start + size - 1);
}
break;
}
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