[SCSI] megaraid_sas: addded support for big endian architecture
This patch will add big endian architecture support to megaraid_sas
driver. The support added is for LSI MegaRAID all generation controllers-
(3Gb/s, 6Gb/s and 12 Gb/s controllers).
We have done basic sanity test @ppc64 arch and @x86_64. Additional
testing/observations are welcome.
[jejb: fix up rejections]
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h
index 92b4daa..e88d935 100644
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.h
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h
@@ -93,8 +93,13 @@
*/
struct RAID_CONTEXT {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u8 nseg:4;
+ u8 Type:4;
+#else
u8 Type:4;
u8 nseg:4;
+#endif
u8 resvd0;
u16 timeoutValue;
u8 regLockFlags;
@@ -298,8 +303,13 @@
* MPT RAID MFA IO Descriptor.
*/
struct MEGASAS_RAID_MFA_IO_REQUEST_DESCRIPTOR {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u32 MessageAddress1:24; /* bits 31:8*/
+ u32 RequestFlags:8;
+#else
u32 RequestFlags:8;
u32 MessageAddress1:24; /* bits 31:8*/
+#endif
u32 MessageAddress2; /* bits 61:32 */
};
@@ -518,6 +528,19 @@
struct MR_LD_RAID {
struct {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ u32 reserved4:7;
+ u32 fpNonRWCapable:1;
+ u32 fpReadAcrossStripe:1;
+ u32 fpWriteAcrossStripe:1;
+ u32 fpReadCapable:1;
+ u32 fpWriteCapable:1;
+ u32 encryptionType:8;
+ u32 pdPiMode:4;
+ u32 ldPiMode:4;
+ u32 reserved5:3;
+ u32 fpCapable:1;
+#else
u32 fpCapable:1;
u32 reserved5:3;
u32 ldPiMode:4;
@@ -529,6 +552,7 @@
u32 fpReadAcrossStripe:1;
u32 fpNonRWCapable:1;
u32 reserved4:7;
+#endif
} capability;
u32 reserved6;
u64 size;