[SCSI] megaraid_sas: add the IEEE SGE support to SAS2 controller

To increase the performance, megaraid sas driver added the IEEE SGE
support to support SAS2 controller.

Signed-off-by Bo Yang<bo.yang@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 4c78cd32e757..a1fd44bc1817 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -96,6 +96,7 @@
 #define MFI_FRAME_DIR_WRITE                     0x0008
 #define MFI_FRAME_DIR_READ                      0x0010
 #define MFI_FRAME_DIR_BOTH                      0x0018
+#define MFI_FRAME_IEEE                          0x0020
 
 /*
  * Definition for cmd_status
@@ -732,10 +733,17 @@ struct megasas_sge64 {
 
 } __attribute__ ((packed));
 
+struct megasas_sge_skinny {
+        u64 phys_addr;
+        u32 length;
+        u32 flag;
+} __packed;
+
 union megasas_sgl {
 
         struct megasas_sge32 sge32[1];
         struct megasas_sge64 sge64[1];
+        struct megasas_sge_skinny sge_skinny[1];
 
 } __attribute__ ((packed));
 
@@ -1210,6 +1218,7 @@ struct megasas_instance {
 
         u8 flag;
         u8 unload;
+        u8 flag_ieee;
         unsigned long last_time;
 
         struct timer_list io_completion_timer;