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authorJing Huang <huangj@brocade.com>2010-03-19 19:07:36 +0100
committerJames Bottomley <James.Bottomley@suse.de>2010-04-11 16:24:23 +0200
commit077424e2e2c97c830d903891dfcd1532068b85b7 (patch)
treed3e37bbbcc8d5f0d45dc39b95db05b6ddcd1a5a9 /drivers/scsi/bfa/bfa_os_inc.h
parent[SCSI] bfa: protect idr using bfad_mutex (diff)
downloadlinux-077424e2e2c97c830d903891dfcd1532068b85b7.tar.xz
linux-077424e2e2c97c830d903891dfcd1532068b85b7.zip
[SCSI] bfa: sg addr big endian fix
sg address in IO request is not set up correctly for big endian platform. add new macros to properly swap the address. Signed-off-by: Jing Huang <huangj@brocade.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/bfa/bfa_os_inc.h')
-rw-r--r--drivers/scsi/bfa/bfa_os_inc.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/scsi/bfa/bfa_os_inc.h b/drivers/scsi/bfa/bfa_os_inc.h
index 10a89f75fa94..4eb1330d5b30 100644
--- a/drivers/scsi/bfa/bfa_os_inc.h
+++ b/drivers/scsi/bfa/bfa_os_inc.h
@@ -50,6 +50,10 @@
#include <scsi/scsi_transport_fc.h>
#include <scsi/scsi_transport.h>
+#ifdef __BIG_ENDIAN
+#define __BIGENDIAN
+#endif
+
#define BFA_ERR KERN_ERR
#define BFA_WARNING KERN_WARNING
#define BFA_NOTICE KERN_NOTICE
@@ -123,6 +127,15 @@ int bfa_os_MWB(void *);
(((_x) & 0x00ff0000) >> 8) | \
(((_x) & 0xff000000) >> 24))
+#define bfa_os_swap_sgaddr(_x) ((u64)( \
+ (((u64)(_x) & (u64)0x00000000000000ffull) << 32) | \
+ (((u64)(_x) & (u64)0x000000000000ff00ull) << 32) | \
+ (((u64)(_x) & (u64)0x0000000000ff0000ull) << 32) | \
+ (((u64)(_x) & (u64)0x00000000ff000000ull) << 32) | \
+ (((u64)(_x) & (u64)0x000000ff00000000ull) >> 32) | \
+ (((u64)(_x) & (u64)0x0000ff0000000000ull) >> 32) | \
+ (((u64)(_x) & (u64)0x00ff000000000000ull) >> 32) | \
+ (((u64)(_x) & (u64)0xff00000000000000ull) >> 32)))
#ifndef __BIGENDIAN
#define bfa_os_htons(_x) ((u16)((((_x) & 0xff00) >> 8) | \
@@ -133,6 +146,7 @@ int bfa_os_MWB(void *);
#define bfa_os_hton3b(_x) bfa_swap_3b(_x)
#define bfa_os_wtole(_x) (_x)
+#define bfa_os_sgaddr(_x) (_x)
#else
@@ -141,6 +155,7 @@ int bfa_os_MWB(void *);
#define bfa_os_hton3b(_x) (_x)
#define bfa_os_htonll(_x) (_x)
#define bfa_os_wtole(_x) bfa_os_swap32(_x)
+#define bfa_os_sgaddr(_x) bfa_os_swap_sgaddr(_x)
#endif