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Commit cd0c7f06 authored by Kumar Gala's avatar Kumar Gala Committed by Paul Mackerras
Browse files

[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: default avatarKumar Gala <galak@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 31087d7d

arch/ppc/kernel/pci.c

+7 −1
Original line number Diff line number Diff line
@@ -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;

		}