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

[Hoang-Nam Nguyen]

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 at de.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;
 }
 
-------------- next part --------------
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;
 }