path: root/lib
diff options
authorAlbert Herranz <albert_herranz@yahoo.es>2009-12-12 06:31:54 +0000
committerGrant Likely <grant.likely@secretlab.ca>2009-12-12 22:24:32 -0700
commitc5df7f775148723de39274537a886e9502eef336 (patch)
tree548acbcef58b1d60308f7e7cd894d514583895a2 /lib
parentde32400dd26e743c5d500aa42d8d6818b79edb73 (diff)
powerpc: allow ioremap within reserved memory regions
Add a flag to let a platform ioremap memory regions marked as reserved. This flag will be used later by the Nintendo Wii support code to allow ioremapping the I/O region sitting between MEM1 and MEM2 and marked as reserved RAM in the patch "wii: use both mem1 and mem2 as ram". This will no longer be needed when proper discontig memory support for 32-bit PowerPC is added to the kernel. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'lib')
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/lmb.c b/lib/lmb.c
index 0343c05609f..9cee17142b2 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -263,7 +263,7 @@ long __init lmb_reserve(u64 base, u64 size)
return lmb_add_region(_rgn, base, size);
-long __init lmb_overlaps_region(struct lmb_region *rgn, u64 base, u64 size)
+long lmb_overlaps_region(struct lmb_region *rgn, u64 base, u64 size)
unsigned long i;
@@ -493,6 +493,11 @@ int __init lmb_is_reserved(u64 addr)
return 0;
+int lmb_is_region_reserved(u64 base, u64 size)
+ return lmb_overlaps_region(&lmb.reserved, base, size);
* Given a <base, len>, find which memory regions belong to this range.
* Adjust the request and return a contiguous chunk.