[PATCH] powerpc: Detect prefetchable windows in pci_process_bridge_OF_ranges
DORMANTno replies
From: Kumar Gala <hidden>
Date: 2005-12-13 20:50:45
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> --- commit 6a050a749ac14613057a2adec0e3dbaa7697a824 tree 254dedb89aac5444c6d387bd1b6ef20c954538a5 parent 761e102769add7e86d510f7605c06f4a82575015 author Kumar Gala [off-list ref] Tue, 13 Dec 2005 14:46:34 -0600 committer Kumar Gala [off-list ref] Tue, 13 Dec 2005 14:46:34 -0600 arch/ppc/kernel/pci.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/arch/ppc/kernel/pci.c b/arch/ppc/kernel/pci.c
index df4b11c..8a58fe8 100644
--- a/arch/ppc/kernel/pci.c
+++ b/arch/ppc/kernel/pci.c@@ -941,7 +941,7 @@ pci_process_bridge_OF_ranges(struct pci_ 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_ 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_ 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; }