[SCSI] pmcraid: MSI-X support and other changes

1. MSI-X interrupt support
2. Driver changes to support new maxRAID controller FW version. The
   changes are mainly done to handle async notification changes done in
   newer controller FW version.
3. Added state change notifications to notify applications of controller
   states.

Signed-off-by: Anil Ravindranath <anil_ravindranath@pmc-sierra.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 179 insertions, 126 deletions

diff --git a/drivers/scsi/pmcraid.h b/drivers/scsi/pmcraid.h
index b8ad07c3449..6cfa0145a1d 100644
--- a/drivers/scsi/pmcraid.h
+++ b/drivers/scsi/pmcraid.h
@@ -40,10 +40,12 @@
  * Driver version: version string in major_version.minor_version.patch format
  * Driver date   : date information in "Mon dd yyyy" format
  */
-#define PMCRAID_DRIVER_NAME       	"PMC MaxRAID"
+#define PMCRAID_DRIVER_NAME		"PMC MaxRAID"
 #define PMCRAID_DEVFILE			"pmcsas"
-#define PMCRAID_DRIVER_VERSION    	"1.0.2"
-#define PMCRAID_DRIVER_DATE       	__DATE__
+#define PMCRAID_DRIVER_VERSION		"2.0.2"
+#define PMCRAID_DRIVER_DATE		__DATE__
+
+#define PMCRAID_FW_VERSION_1		0x002
 
 /* Maximum number of adapters supported by current version of the driver */
 #define PMCRAID_MAX_ADAPTERS		1024
@@ -85,17 +87,17 @@
 #define PMCRAID_IOARCB_ALIGNMENT                 32
 #define PMCRAID_IOADL_ALIGNMENT                  16
 #define PMCRAID_IOASA_ALIGNMENT                  4
-#define PMCRAID_NUM_MSIX_VECTORS                 1
+#define PMCRAID_NUM_MSIX_VECTORS                 16
 
 /* various other limits */
-#define PMCRAID_VENDOR_ID_LEN           	 8
-#define PMCRAID_PRODUCT_ID_LEN            	 16
-#define PMCRAID_SERIAL_NUM_LEN          	 8
-#define PMCRAID_LUN_LEN			         8
-#define PMCRAID_MAX_CDB_LEN                      16
-#define PMCRAID_DEVICE_ID_LEN			 8
-#define PMCRAID_SENSE_DATA_LEN			 256
-#define PMCRAID_ADD_CMD_PARAM_LEN		 48
+#define PMCRAID_VENDOR_ID_LEN			8
+#define PMCRAID_PRODUCT_ID_LEN			16
+#define PMCRAID_SERIAL_NUM_LEN			8
+#define PMCRAID_LUN_LEN				8
+#define PMCRAID_MAX_CDB_LEN			16
+#define PMCRAID_DEVICE_ID_LEN			8
+#define PMCRAID_SENSE_DATA_LEN			256
+#define PMCRAID_ADD_CMD_PARAM_LEN		48
 
 #define PMCRAID_MAX_BUS_TO_SCAN                  1
 #define PMCRAID_MAX_NUM_TARGETS_PER_BUS          256
@@ -116,17 +118,10 @@
 #define PMCRAID_VSET_MAX_SECTORS                 512
 #define PMCRAID_MAX_CMD_PER_LUN                  254
 
-/* Number of configuration table entries (resources) */
-#define PMCRAID_MAX_NUM_OF_VSETS                 240
-
-/* Todo : Check max limit for Phase 1 */
-#define PMCRAID_MAX_NUM_OF_PHY_DEVS              256
-
-/* MAX_NUM_OF_DEVS includes 1 FP, 1 Dummy Enclosure device */
-#define PMCRAID_MAX_NUM_OF_DEVS                        \
-    (PMCRAID_MAX_NUM_OF_VSETS + PMCRAID_MAX_NUM_OF_PHY_DEVS + 2)
-
-#define PMCRAID_MAX_RESOURCES                    PMCRAID_MAX_NUM_OF_DEVS
+/* Number of configuration table entries (resources), includes 1 FP,
+ * 1 Enclosure device
+ */
+#define PMCRAID_MAX_RESOURCES                    256
 
 /* Adapter Commands used by driver */
 #define PMCRAID_QUERY_RESOURCE_STATE             0xC2
@@ -177,6 +172,7 @@
 #define PMCRAID_IOASC_SENSE_STATUS(ioasc)        ((ioasc) & 0x000000ff)
 
 #define PMCRAID_IOASC_GOOD_COMPLETION			0x00000000
+#define PMCRAID_IOASC_GC_IOARCB_NOTFOUND		0x005A0000
 #define PMCRAID_IOASC_NR_INIT_CMD_REQUIRED		0x02040200
 #define PMCRAID_IOASC_NR_IOA_RESET_REQUIRED		0x02048000
 #define PMCRAID_IOASC_NR_SYNC_REQUIRED			0x023F0000
@@ -187,12 +183,12 @@
 #define PMCRAID_IOASC_HW_IOA_RESET_REQUIRED		0x04448600
 #define PMCRAID_IOASC_IR_INVALID_RESOURCE_HANDLE        0x05250000
 #define PMCRAID_IOASC_AC_TERMINATED_BY_HOST		0x0B5A0000
-#define PMCRAID_IOASC_UA_BUS_WAS_RESET           	0x06290000
-#define PMCRAID_IOASC_UA_BUS_WAS_RESET_BY_OTHER  	0x06298000
+#define PMCRAID_IOASC_UA_BUS_WAS_RESET			0x06290000
+#define PMCRAID_IOASC_UA_BUS_WAS_RESET_BY_OTHER		0x06298000
 
 /* Driver defined IOASCs */
-#define PMCRAID_IOASC_IOA_WAS_RESET              	0x10000001
-#define PMCRAID_IOASC_PCI_ACCESS_ERROR           	0x10000002
+#define PMCRAID_IOASC_IOA_WAS_RESET			0x10000001
+#define PMCRAID_IOASC_PCI_ACCESS_ERROR			0x10000002
 
 /* Various timeout values (in milliseconds) used. If any of these are chip
  * specific, move them to pmcraid_chip_details structure.
@@ -336,6 +332,13 @@ struct pmcraid_config_table_entry {
 	__u8  lun[PMCRAID_LUN_LEN];
 } __attribute__((packed, aligned(4)));
 
+/* extended configuration table sizes are of 64 bytes in size */
+#define PMCRAID_CFGTE_EXT_SIZE	32
+struct pmcraid_config_table_entry_ext {
+	struct pmcraid_config_table_entry cfgte;
+	__u8  cfgte_ext[PMCRAID_CFGTE_EXT_SIZE];
+};
+
 /* resource types (config_table_entry.resource_type values) */
 #define RES_TYPE_AF_DASD     0x00
 #define RES_TYPE_GSCSI       0x01
@@ -376,7 +379,12 @@ struct pmcraid_config_table {
 	__u8  reserved1;
 	__u8  flags;
 	__u8  reserved2[11];
-	struct pmcraid_config_table_entry entries[PMCRAID_MAX_RESOURCES];
+	union {
+		struct pmcraid_config_table_entry
+				entries[PMCRAID_MAX_RESOURCES];
+		struct pmcraid_config_table_entry_ext
+				entries_ext[PMCRAID_MAX_RESOURCES];
+	};
 } __attribute__((packed, aligned(4)));
 
 /* config_table.flags value */
@@ -385,7 +393,7 @@ struct pmcraid_config_table {
 /*
  * HCAM format
  */
-#define PMCRAID_HOSTRCB_LDNSIZE 		4056
+#define PMCRAID_HOSTRCB_LDNSIZE			4056
 
 /* Error log notification format */
 struct pmcraid_hostrcb_error {
@@ -416,6 +424,15 @@ struct pmcraid_hcam_hdr {
 struct pmcraid_hcam_ccn {
 	struct pmcraid_hcam_hdr header;
 	struct pmcraid_config_table_entry cfg_entry;
+	struct pmcraid_config_table_entry cfg_entry_old;
+} __attribute__((packed, aligned(4)));
+
+#define PMCRAID_CCN_EXT_SIZE	3944
+struct pmcraid_hcam_ccn_ext {
+	struct pmcraid_hcam_hdr header;
+	struct pmcraid_config_table_entry_ext cfg_entry;
+	struct pmcraid_config_table_entry_ext cfg_entry_old;
+	__u8   reserved[PMCRAID_CCN_EXT_SIZE];
 } __attribute__((packed, aligned(4)));
 
 struct pmcraid_hcam_ldn {
@@ -431,6 +448,8 @@ struct pmcraid_hcam_ldn {
 #define NOTIFICATION_TYPE_ENTRY_CHANGED		0x0
 #define NOTIFICATION_TYPE_ENTRY_NEW		0x1
 #define NOTIFICATION_TYPE_ENTRY_DELETED		0x2
+#define NOTIFICATION_TYPE_STATE_CHANGE		0x3
+#define NOTIFICATION_TYPE_ENTRY_STATECHANGED	0x4
 #define NOTIFICATION_TYPE_ERROR_LOG		0x10
 #define NOTIFICATION_TYPE_INFORMATION_LOG	0x11
 
@@ -460,6 +479,7 @@ struct pmcraid_chip_details {
 	unsigned long  mailbox;
 	unsigned long  global_intr_mask;
 	unsigned long  ioa_host_intr;
+	unsigned long  ioa_host_msix_intr;
 	unsigned long  ioa_host_intr_clr;
 	unsigned long  ioa_host_mask;
 	unsigned long  ioa_host_mask_clr;
@@ -482,6 +502,7 @@ struct pmcraid_chip_details {
 #define INTRS_IOA_PROCESSOR_ERROR		PMC_BIT32(29)
 #define INTRS_HRRQ_VALID			PMC_BIT32(30)
 #define INTRS_OPERATIONAL_STATUS		PMC_BIT32(0)
+#define INTRS_ALLOW_MSIX_VECTOR0		PMC_BIT32(31)
 
 /* Host to IOA Doorbells */
 #define DOORBELL_RUNTIME_RESET			PMC_BIT32(1)
@@ -489,10 +510,12 @@ struct pmcraid_chip_details {
 #define DOORBELL_IOA_DEBUG_ALERT		PMC_BIT32(9)
 #define DOORBELL_ENABLE_DESTRUCTIVE_DIAGS	PMC_BIT32(8)
 #define DOORBELL_IOA_START_BIST			PMC_BIT32(23)
+#define DOORBELL_INTR_MODE_MSIX			PMC_BIT32(25)
+#define DOORBELL_INTR_MSIX_CLR			PMC_BIT32(26)
 #define DOORBELL_RESET_IOA			PMC_BIT32(31)
 
 /* Global interrupt mask register value */
-#define GLOBAL_INTERRUPT_MASK			0x4ULL
+#define GLOBAL_INTERRUPT_MASK			0x5ULL
 
 #define PMCRAID_ERROR_INTERRUPTS	(INTRS_IOARCB_TRANSFER_FAILED | \
 					 INTRS_IOA_UNIT_CHECK | \
@@ -503,8 +526,8 @@ struct pmcraid_chip_details {
 
 #define PMCRAID_PCI_INTERRUPTS		(PMCRAID_ERROR_INTERRUPTS | \
 					 INTRS_HRRQ_VALID | \
-					 INTRS_CRITICAL_OP_IN_PROGRESS |\
-					 INTRS_TRANSITION_TO_OPERATIONAL)
+					 INTRS_TRANSITION_TO_OPERATIONAL |\
+					 INTRS_ALLOW_MSIX_VECTOR0)
 
 /* control_block, associated with each of the commands contains IOARCB, IOADLs
  * memory for IOASA. Additional 3 * 16 bytes are allocated in order to support
@@ -526,17 +549,24 @@ struct pmcraid_sglist {
 	struct scatterlist scatterlist[1];
 };
 
+/* page D0 inquiry data of focal point resource */
+struct pmcraid_inquiry_data {
+	__u8	ph_dev_type;
+	__u8	page_code;
+	__u8	reserved1;
+	__u8	add_page_len;
+	__u8	length;
+	__u8	reserved2;
+	__le16	fw_version;
+	__u8	reserved3[16];
+};
+
 /* pmcraid_cmd - LLD representation of SCSI command */
 struct pmcraid_cmd {
 
 	/* Ptr and bus address of DMA.able control block for this command */
 	struct pmcraid_control_block *ioa_cb;
 	dma_addr_t ioa_cb_bus_addr;
-
-	/* sense buffer for REQUEST SENSE command if firmware is not sending
-	 * auto sense data
-	 */
-	dma_addr_t sense_buffer_dma;
 	dma_addr_t dma_handle;
 	u8 *sense_buffer;
 
@@ -556,11 +586,22 @@ struct pmcraid_cmd {
 
 	struct pmcraid_sglist *sglist; /* used for passthrough IOCTLs */
 
-	/* scratch used during reset sequence */
+	/* scratch used */
 	union {
+		/* during reset sequence */
 		unsigned long time_left;
 		struct pmcraid_resource_entry *res;
-	} u;
+		int hrrq_index;
+
+		/* used during IO command error handling. Sense buffer
+		 * for REQUEST SENSE command if firmware is not sending
+		 * auto sense data
+		 */
+		struct  {
+			u8 *sense_buffer;
+			dma_addr_t sense_buffer_dma;
+		};
+	};
 };
 
 /*
@@ -568,6 +609,7 @@ struct pmcraid_cmd {
  */
 struct pmcraid_interrupts {
 	void __iomem *ioa_host_interrupt_reg;
+	void __iomem *ioa_host_msix_interrupt_reg;
 	void __iomem *ioa_host_interrupt_clr_reg;
 	void __iomem *ioa_host_interrupt_mask_reg;
 	void __iomem *ioa_host_interrupt_mask_clr_reg;
@@ -578,11 +620,12 @@ struct pmcraid_interrupts {
 
 /* ISR parameters LLD allocates (one for each MSI-X if enabled) vectors */
 struct pmcraid_isr_param {
-	u8 hrrq_id;			/* hrrq entry index */
-	u16 vector;			/* allocated msi-x vector */
 	struct pmcraid_instance *drv_inst;
+	u16 vector;			/* allocated msi-x vector */
+	u8 hrrq_id;			/* hrrq entry index */
 };
 
+
 /* AEN message header sent as part of event data to applications */
 struct pmcraid_aen_msg {
 	u32 hostno;
@@ -591,6 +634,19 @@ struct pmcraid_aen_msg {
 	u8  data[0];
 };
 
+/* Controller state event message type */
+struct pmcraid_state_msg {
+	struct pmcraid_aen_msg msg;
+	u32 ioa_state;
+};
+
+#define PMC_DEVICE_EVENT_RESET_START		0x11000000
+#define PMC_DEVICE_EVENT_RESET_SUCCESS		0x11000001
+#define PMC_DEVICE_EVENT_RESET_FAILED		0x11000002
+#define PMC_DEVICE_EVENT_SHUTDOWN_START		0x11000003
+#define PMC_DEVICE_EVENT_SHUTDOWN_SUCCESS	0x11000004
+#define PMC_DEVICE_EVENT_SHUTDOWN_FAILED	0x11000005
+
 struct pmcraid_hostrcb {
 	struct pmcraid_instance *drv_inst;
 	struct pmcraid_aen_msg *msg;
@@ -628,6 +684,7 @@ struct pmcraid_instance {
 	/* HostRCBs needed for HCAM */
 	struct pmcraid_hostrcb ldn;
 	struct pmcraid_hostrcb ccn;
+	struct pmcraid_state_msg scn;	/* controller state change msg */
 
 
 	/* Bus address of start of HRRQ */
@@ -645,12 +702,15 @@ struct pmcraid_instance {
 	/* Lock for HRRQ access */
 	spinlock_t hrrq_lock[PMCRAID_NUM_MSIX_VECTORS];
 
+	struct pmcraid_inquiry_data *inq_data;
+	dma_addr_t  inq_data_baddr;
+
+	/* size of configuration table entry, varies based on the firmware */
+	u32	config_table_entry_size;
+
 	/* Expected toggle bit at host */
 	u8 host_toggle_bit[PMCRAID_NUM_MSIX_VECTORS];
 
-	/* No of Reset IOA retries . IOA marked dead if threshold exceeds */
-	u8 ioa_reset_attempts;
-#define PMCRAID_RESET_ATTEMPTS 3
 
 	/* Wait Q for  threads to wait for Reset IOA completion */
 	wait_queue_head_t reset_wait_q;
@@ -664,14 +724,22 @@ struct pmcraid_instance {
 	struct Scsi_Host *host;	/* mid layer interface structure handle */
 	struct pci_dev *pdev;	/* PCI device structure handle */
 
+	/* No of Reset IOA retries . IOA marked dead if threshold exceeds */
+	u8 ioa_reset_attempts;
+#define PMCRAID_RESET_ATTEMPTS 3
+
 	u8  current_log_level;	/* default level for logging IOASC errors */
 
 	u8  num_hrrq;		/* Number of interrupt vectors allocated */
+	u8  interrupt_mode;	/* current interrupt mode legacy or msix */
 	dev_t dev;		/* Major-Minor numbers for Char device */
 
 	/* Used as ISR handler argument */
 	struct pmcraid_isr_param hrrq_vector[PMCRAID_NUM_MSIX_VECTORS];
 
+	/* Message id as filled in last fired IOARCB, used to identify HRRQ */
+	atomic_t last_message_id;
+
 	/* configuration table */
 	struct pmcraid_config_table *cfg_table;
 	dma_addr_t cfg_table_bus_addr;
@@ -686,8 +754,14 @@ struct pmcraid_instance {
 
 	struct list_head free_cmd_pool;
 	struct list_head pending_cmd_pool;
-	spinlock_t free_pool_lock;	 	/* free pool lock */
-	spinlock_t pending_pool_lock;	 	/* pending pool lock */
+	spinlock_t free_pool_lock;		/* free pool lock */
+	spinlock_t pending_pool_lock;		/* pending pool lock */
+
+	/* Tasklet to handle deferred processing */
+	struct tasklet_struct isr_tasklet[PMCRAID_NUM_MSIX_VECTORS];
+
+	/* Work-queue (Shared) for deferred reset processing */
+	struct work_struct worker_q;
 
 	/* No of IO commands pending with FW */
 	atomic_t outstanding_cmds;
@@ -695,11 +769,6 @@ struct pmcraid_instance {
 	/* should add/delete resources to mid-layer now ?*/
 	atomic_t expose_resources;
 
-	/* Tasklet to handle deferred processing */
-	struct tasklet_struct isr_tasklet[PMCRAID_NUM_MSIX_VECTORS];
-
-	/* Work-queue (Shared) for deferred reset processing */
-	struct work_struct worker_q;
 
 
 	u32 ioa_state:4;	/* For IOA Reset sequence FSM */
@@ -728,7 +797,10 @@ struct pmcraid_instance {
 /* LLD maintained resource entry structure */
 struct pmcraid_resource_entry {
 	struct list_head queue;	/* link to "to be exposed" resources */
-	struct pmcraid_config_table_entry cfg_entry;
+	union {
+		struct pmcraid_config_table_entry cfg_entry;
+		struct pmcraid_config_table_entry_ext cfg_entry_ext;
+	};
 	struct scsi_device *scsi_dev;	/* Link scsi_device structure */
 	atomic_t read_failures;		/* count of failed READ commands */
 	atomic_t write_failures;	/* count of failed WRITE commands */
@@ -771,73 +843,75 @@ struct pmcraid_ioasc_error {
  * statically.
  */
 static struct pmcraid_ioasc_error pmcraid_ioasc_error_table[] = {
-	{0x01180600, IOASC_LOG_LEVEL_MUST,
+	{0x01180600, IOASC_LOG_LEVEL_HARD,
 	 "Recovered Error, soft media error, sector reassignment suggested"},
-	{0x015D0000, IOASC_LOG_LEVEL_MUST,
-	 "Recovered Error, failure prediction threshold exceeded"},
-	{0x015D9200, IOASC_LOG_LEVEL_MUST,
-	 "Recovered Error, soft Cache Card Battery error threshold"},
-	{0x015D9200, IOASC_LOG_LEVEL_MUST,
-	 "Recovered Error, soft Cache Card Battery error threshold"},
-	{0x02048000, IOASC_LOG_LEVEL_MUST,
+	{0x015D0000, IOASC_LOG_LEVEL_HARD,
+	 "Recovered Error, failure prediction thresold exceeded"},
+	{0x015D9200, IOASC_LOG_LEVEL_HARD,
+	 "Recovered Error, soft Cache Card Battery error thresold"},
+	{0x015D9200, IOASC_LOG_LEVEL_HARD,
+	 "Recovered Error, soft Cache Card Battery error thresold"},
+	{0x02048000, IOASC_LOG_LEVEL_HARD,
 	 "Not Ready, IOA Reset Required"},
-	{0x02408500, IOASC_LOG_LEVEL_MUST,
+	{0x02408500, IOASC_LOG_LEVEL_HARD,
 	 "Not Ready, IOA microcode download required"},
-	{0x03110B00, IOASC_LOG_LEVEL_MUST,
+	{0x03110B00, IOASC_LOG_LEVEL_HARD,
 	 "Medium Error, data unreadable, reassignment suggested"},
 	{0x03110C00, IOASC_LOG_LEVEL_MUST,
 	 "Medium Error, data unreadable do not reassign"},
-	{0x03310000, IOASC_LOG_LEVEL_MUST,
+	{0x03310000, IOASC_LOG_LEVEL_HARD,
 	 "Medium Error, media corrupted"},
-	{0x04050000, IOASC_LOG_LEVEL_MUST,
+	{0x04050000, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, IOA can't communicate with device"},
 	{0x04080000, IOASC_LOG_LEVEL_MUST,
 	 "Hardware Error, device bus error"},
-	{0x04080000, IOASC_LOG_LEVEL_MUST,
+	{0x04088000, IOASC_LOG_LEVEL_MUST,
 	 "Hardware Error, device bus is not functioning"},
-	{0x04118000, IOASC_LOG_LEVEL_MUST,
+	{0x04118000, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, IOA reserved area data check"},
-	{0x04118100, IOASC_LOG_LEVEL_MUST,
+	{0x04118100, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, IOA reserved area invalid data pattern"},
-	{0x04118200, IOASC_LOG_LEVEL_MUST,
+	{0x04118200, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, IOA reserved area LRC error"},
-	{0x04320000, IOASC_LOG_LEVEL_MUST,
+	{0x04320000, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, reassignment space exhausted"},
-	{0x04330000, IOASC_LOG_LEVEL_MUST,
+	{0x04330000, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, data transfer underlength error"},
-	{0x04330000, IOASC_LOG_LEVEL_MUST,
+	{0x04330000, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, data transfer overlength error"},
 	{0x04418000, IOASC_LOG_LEVEL_MUST,
 	 "Hardware Error, PCI bus error"},
-	{0x04440000, IOASC_LOG_LEVEL_MUST,
+	{0x04440000, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, device error"},
-	{0x04448300, IOASC_LOG_LEVEL_MUST,
+	{0x04448200, IOASC_LOG_LEVEL_MUST,
+	 "Hardware Error, IOA error"},
+	{0x04448300, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, undefined device response"},
-	{0x04448400, IOASC_LOG_LEVEL_MUST,
+	{0x04448400, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, IOA microcode error"},
-	{0x04448600, IOASC_LOG_LEVEL_MUST,
+	{0x04448600, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, IOA reset required"},
-	{0x04449200, IOASC_LOG_LEVEL_MUST,
+	{0x04449200, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, hard Cache Fearuee Card Battery error"},
-	{0x0444A000, IOASC_LOG_LEVEL_MUST,
+	{0x0444A000, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, failed device altered"},
-	{0x0444A200, IOASC_LOG_LEVEL_MUST,
+	{0x0444A200, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, data check after reassignment"},
-	{0x0444A300, IOASC_LOG_LEVEL_MUST,
+	{0x0444A300, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, LRC error after reassignment"},
-	{0x044A0000, IOASC_LOG_LEVEL_MUST,
+	{0x044A0000, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, device bus error (msg/cmd phase)"},
-	{0x04670400, IOASC_LOG_LEVEL_MUST,
+	{0x04670400, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, new device can't be used"},
-	{0x04678000, IOASC_LOG_LEVEL_MUST,
+	{0x04678000, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, invalid multiadapter configuration"},
-	{0x04678100, IOASC_LOG_LEVEL_MUST,
+	{0x04678100, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, incorrect connection between enclosures"},
-	{0x04678200, IOASC_LOG_LEVEL_MUST,
+	{0x04678200, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, connections exceed IOA design limits"},
-	{0x04678300, IOASC_LOG_LEVEL_MUST,
+	{0x04678300, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, incorrect multipath connection"},
-	{0x04679000, IOASC_LOG_LEVEL_MUST,
+	{0x04679000, IOASC_LOG_LEVEL_HARD,
 	 "Hardware Error, command to LUN failed"},
 	{0x064C8000, IOASC_LOG_LEVEL_HARD,
 	 "Unit Attention, cache exists for missing/failed device"},
@@ -845,15 +919,15 @@ static struct pmcraid_ioasc_error pmcraid_ioasc_error_table[] = {
 	 "Unit Attention, incompatible exposed mode device"},
 	{0x06670600, IOASC_LOG_LEVEL_HARD,
 	 "Unit Attention, attachment of logical unit failed"},
-	{0x06678000, IOASC_LOG_LEVEL_MUST,
+	{0x06678000, IOASC_LOG_LEVEL_HARD,
 	 "Unit Attention, cables exceed connective design limit"},
-	{0x06678300, IOASC_LOG_LEVEL_MUST,
+	{0x06678300, IOASC_LOG_LEVEL_HARD,
 	 "Unit Attention, incomplete multipath connection between" \
 	 "IOA and enclosure"},
-	{0x06678400, IOASC_LOG_LEVEL_MUST,
+	{0x06678400, IOASC_LOG_LEVEL_HARD,
 	 "Unit Attention, incomplete multipath connection between" \
 	 "device and enclosure"},
-	{0x06678500, IOASC_LOG_LEVEL_MUST,
+	{0x06678500, IOASC_LOG_LEVEL_HARD,
 	 "Unit Attention, incomplete multipath connection between" \
 	 "IOA and remote IOA"},
 	{0x06678600, IOASC_LOG_LEVEL_HARD,
@@ -863,11 +937,11 @@ static struct pmcraid_ioasc_error pmcraid_ioasc_error_table[] = {
 	 "function"},
 	{0x06698200, IOASC_LOG_LEVEL_HARD,
 	 "Unit Attention, corrupt array parity detected on device"},
-	{0x066B0200, IOASC_LOG_LEVEL_MUST,
+	{0x066B0200, IOASC_LOG_LEVEL_HARD,
 	 "Unit Attention, array exposed"},
 	{0x066B8200, IOASC_LOG_LEVEL_HARD,
 	 "Unit Attention, exposed array is still protected"},
-	{0x066B9200, IOASC_LOG_LEVEL_MUST,
+	{0x066B9200, IOASC_LOG_LEVEL_HARD,
 	 "Unit Attention, Multipath redundancy level got worse"},
 	{0x07270000, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, device is read/write protected by IOA"},
@@ -875,37 +949,37 @@ static struct pmcraid_ioasc_error pmcraid_ioasc_error_table[] = {
 	 "Data Protect, IOA doesn't support device attribute"},
 	{0x07278100, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, NVRAM mirroring prohibited"},
-	{0x07278400, IOASC_LOG_LEVEL_MUST,
+	{0x07278400, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, array is short 2 or more devices"},
-	{0x07278600, IOASC_LOG_LEVEL_MUST,
+	{0x07278600, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, exposed array is short a required device"},
-	{0x07278700, IOASC_LOG_LEVEL_MUST,
+	{0x07278700, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, array members not at required addresses"},
-	{0x07278800, IOASC_LOG_LEVEL_MUST,
+	{0x07278800, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, exposed mode device resource address conflict"},
-	{0x07278900, IOASC_LOG_LEVEL_MUST,
+	{0x07278900, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, incorrect resource address of exposed mode device"},
-	{0x07278A00, IOASC_LOG_LEVEL_MUST,
+	{0x07278A00, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, Array is missing a device and parity is out of sync"},
-	{0x07278B00, IOASC_LOG_LEVEL_MUST,
+	{0x07278B00, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, maximum number of arrays already exist"},
 	{0x07278C00, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, cannot locate cache data for device"},
 	{0x07278D00, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, cache data exits for a changed device"},
-	{0x07279100, IOASC_LOG_LEVEL_MUST,
+	{0x07279100, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, detection of a device requiring format"},
-	{0x07279200, IOASC_LOG_LEVEL_MUST,
+	{0x07279200, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, IOA exceeds maximum number of devices"},
-	{0x07279600, IOASC_LOG_LEVEL_MUST,
+	{0x07279600, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, missing array, volume set is not functional"},
-	{0x07279700, IOASC_LOG_LEVEL_MUST,
+	{0x07279700, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, single device for a volume set"},
-	{0x07279800, IOASC_LOG_LEVEL_MUST,
+	{0x07279800, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, missing multiple devices for a volume set"},
 	{0x07279900, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, maximum number of volument sets already exists"},
-	{0x07279A00, IOASC_LOG_LEVEL_MUST,
+	{0x07279A00, IOASC_LOG_LEVEL_HARD,
 	 "Data Protect, other volume set problem"},
 };
 
@@ -952,27 +1026,6 @@ struct pmcraid_ioctl_header {
 
 #define PMCRAID_IOCTL_SIGNATURE      "PMCRAID"
 
-
-/*
- * pmcraid_event_details - defines AEN details that apps can retrieve from LLD
- *
- * .rcb_ccn - complete RCB of CCN
- * .rcb_ldn - complete RCB of CCN
- */
-struct pmcraid_event_details {
-	struct pmcraid_hcam_ccn rcb_ccn;
-	struct pmcraid_hcam_ldn rcb_ldn;
-};
-
-/*
- * pmcraid_driver_ioctl_buffer - structure passed as argument to most of the
- * PMC driver handled ioctls.
- */
-struct pmcraid_driver_ioctl_buffer {
-	struct pmcraid_ioctl_header ioctl_header;
-	struct pmcraid_event_details event_details;
-};
-
 /*
  * pmcraid_passthrough_ioctl_buffer - structure given as argument to
  * passthrough(or firmware handled) IOCTL commands. Note that ioarcb requires