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[PATCH] powerpc: Detect prefetchable windows in pci_process_bridge_OF_ranges

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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>
This commit is contained in:
Kumar Gala 2005-12-13 14:46:29 -06:00 committed by Paul Mackerras
parent 31087d7d49
commit cd0c7f0680
1 changed files with 7 additions and 1 deletions
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8
arch/ppc/kernel/pci.c
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@ -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;
}