megaraid_sas: add support for secure JBOD

This patch adds support for Secure Encrypting Drives (SED) in JBOD mode:

1) If the firmware supports SED JBOD, all non read/write commands to JBODs
   will be sent via firmware path, and read/write commands to JBODs will
   be sent via fastpath.
2) If the firmware does not support SED JBOD, driver will fall back to the
   old design, i.e. send all JBOD I/O via fastpath.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Chaitra Basappa <chaitra.basappa@avagotech.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

drivers/scsi/megaraid/megaraid_sas.h

@@ -969,7 +969,20 @@ struct megasas_ctrl_info {
 
 	struct {
 #if defined(__BIG_ENDIAN_BITFIELD)
-		u32     reserved:25;
+		u32     reserved:12;
+		u32     discardCacheDuringLDDelete:1;
+		u32     supportSecurityonJBOD:1;
+		u32     supportCacheBypassModes:1;
+		u32     supportDisableSESMonitoring:1;
+		u32     supportForceFlash:1;
+		u32     supportNVDRAM:1;
+		u32     supportDrvActivityLEDSetting:1;
+		u32     supportAllowedOpsforDrvRemoval:1;
+		u32     supportHOQRebuild:1;
+		u32     supportForceTo512e:1;
+		u32     supportNVCacheErase:1;
+		u32     supportDebugQueue:1;
+		u32     supportSwZone:1;
 		u32     supportCrashDump:1;
 		u32     supportMaxExtLDs:1;
 		u32     supportT10RebuildAssist:1;
@@ -981,9 +994,22 @@ struct megasas_ctrl_info {
 		u32     supportThermalPollInterval:1;
 		u32     supportDisableImmediateIO:1;
 		u32     supportT10RebuildAssist:1;
-		u32     supportMaxExtLDs:1;
-		u32     supportCrashDump:1;
-		u32     reserved:25;
+		u32	supportMaxExtLDs:1;
+		u32	supportCrashDump:1;
+		u32     supportSwZone:1;
+		u32     supportDebugQueue:1;
+		u32     supportNVCacheErase:1;
+		u32     supportForceTo512e:1;
+		u32     supportHOQRebuild:1;
+		u32     supportAllowedOpsforDrvRemoval:1;
+		u32     supportDrvActivityLEDSetting:1;
+		u32     supportNVDRAM:1;
+		u32     supportForceFlash:1;
+		u32     supportDisableSESMonitoring:1;
+		u32     supportCacheBypassModes:1;
+		u32     supportSecurityonJBOD:1;
+		u32     discardCacheDuringLDDelete:1;
+		u32     reserved:12;
 #endif
 	} adapterOperations3;
 
@@ -1022,6 +1048,13 @@ enum MR_MFI_MPT_PTHR_FLAGS {
 	MFI_MPT_ATTACHED = 2,
 };
 
+enum MR_SCSI_CMD_TYPE {
+	READ_WRITE_LDIO = 0,
+	NON_READ_WRITE_LDIO = 1,
+	READ_WRITE_SYSPDIO = 2,
+	NON_READ_WRITE_SYSPDIO = 3,
+};
+
 /* Frame Type */
 #define IO_FRAME				0
 #define PTHRU_FRAME				1
@@ -1194,19 +1227,23 @@ union megasas_sgl_frame {
 typedef union _MFI_CAPABILITIES {
 	struct {
 #if   defined(__BIG_ENDIAN_BITFIELD)
-		u32     reserved:27;
+		u32     reserved:25;
+		u32     security_protocol_cmds_fw:1;
+		u32     support_core_affinity:1;
 		u32     support_ndrive_r1_lb:1;
 		u32	support_max_255lds:1;
-		u32	reserved1:1;
+		u32	support_fastpath_wb:1;
 		u32     support_additional_msix:1;
 		u32     support_fp_remote_lun:1;
 #else
 		u32     support_fp_remote_lun:1;
 		u32     support_additional_msix:1;
-		u32	reserved1:1;
+		u32	support_fastpath_wb:1;
 		u32	support_max_255lds:1;
 		u32     support_ndrive_r1_lb:1;
-		u32     reserved:27;
+		u32     support_core_affinity:1;
+		u32     security_protocol_cmds_fw:1;
+		u32     reserved:25;
 #endif
 	} mfi_capabilities;
 	u32     reg;
@@ -1638,13 +1675,14 @@ struct megasas_instance {
 	u32 crash_dump_fw_support;
 	u32 crash_dump_drv_support;
 	u32 crash_dump_app_support;
+	u32 secure_jbod_support;
 	spinlock_t crashdump_lock;
 
 	struct megasas_register_set __iomem *reg_set;
 	u32 *reply_post_host_index_addr[MR_MAX_MSIX_REG_ARRAY];
 	struct megasas_pd_list          pd_list[MEGASAS_MAX_PD];
 	struct megasas_pd_list          local_pd_list[MEGASAS_MAX_PD];
-	u8     ld_ids[MEGASAS_MAX_LD_IDS];
+	u8 ld_ids[MEGASAS_MAX_LD_IDS];
 	s8 init_id;
 
 	u16 max_num_sge;
@@ -1946,5 +1984,6 @@ void __megasas_return_cmd(struct megasas_instance *instance,
 
 void megasas_return_mfi_mpt_pthr(struct megasas_instance *instance,
 	struct megasas_cmd *cmd_mfi, struct megasas_cmd_fusion *cmd_fusion);
+int megasas_cmd_type(struct scsi_cmnd *cmd);
 
 #endif				/*LSI_MEGARAID_SAS_H */