linux-kernel - [PATCH 2.6.19 2/4] ehca: hcp_phyp.c: correct page mapping in 64k page mode

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Date:	Sun, 5 Nov 2006 21:41:28 +0100
From:	Hoang-Nam Nguyen <hnguyen@...ibm.com>
To:	rolandd@...co.com
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	openib-general@...nib.org, raisch@...ibm.com
Subject: [PATCH 2.6.19 2/4] ehca: hcp_phyp.c: correct page mapping in 64k page mode

Hello Roland!
This is another patch of ehca for 64k page support. It fixes a bug that maps
4k aligned addresses in 64k page mode in a wrong way.
Thanks!
Nam


Signed-off-by: Hoang-Nam Nguyen <hnguyen@...ibm.com>
---


 hcp_phyp.c |    5 +++--0018_64kpage_ioremap.patch  
 1 files changed, 3 insertions(+), 2 deletions(-)


diff --git a/drivers/infiniband/hw/ehca/hcp_phyp.c b/drivers/infiniband/hw/ehca/hcp_phyp.c
index 0b1a477..6237252 100644
--- a/drivers/infiniband/hw/ehca/hcp_phyp.c
+++ b/drivers/infiniband/hw/ehca/hcp_phyp.c
@@ -44,13 +44,14 @@ #include "hipz_hw.h"
 
 int hcall_map_page(u64 physaddr, u64 *mapaddr)
 {
- *mapaddr = (u64)(ioremap(physaddr, EHCA_PAGESIZE));
+ *mapaddr = (u64)ioremap((physaddr & PAGE_MASK), PAGE_SIZE) +
+  (physaddr & (~PAGE_MASK));
  return 0;
 }
 
 int hcall_unmap_page(u64 mapaddr)
 {
- iounmap((volatile void __iomem*)mapaddr);
+ iounmap((void __iomem*)(mapaddr & PAGE_MASK));
  return 0;
 }
 

View attachment "roland_svnehca_0018_64kpage_ioremap.patch" of type "text/x-diff" (616 bytes)