scsi: mpi3mr: Trigger support

Add functions to process automatic diag triggers. If a condition defined in
the triggers is met, the driver will call appropriate controller functions
to save the diagnostic information.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202405151955.BiAWI1SY-lkp@intel.com/
Co-developed-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Ranjan Kumar <ranjan.kumar@broadcom.com>
Link: https://lore.kernel.org/r/20240626102646.14298-3-ranjan.kumar@broadcom.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/mpi3mr/mpi3mr.h

@@ -193,7 +193,12 @@ extern atomic64_t event_counter;
 #define MPI3MR_DEFAULT_HDB_MIN_SZ       (2 * 1024 * 1024)
 #define MPI3MR_MAX_NUM_HDB      2
 
+#define MPI3MR_HDB_TRIGGER_TYPE_UNKNOWN		0
+#define MPI3MR_HDB_TRIGGER_TYPE_FAULT		1
+#define MPI3MR_HDB_TRIGGER_TYPE_ELEMENT		2
 #define MPI3MR_HDB_TRIGGER_TYPE_GLOBAL          3
+#define MPI3MR_HDB_TRIGGER_TYPE_SOFT_RESET	4
+#define MPI3MR_HDB_TRIGGER_TYPE_FW_RELEASED	5
 
 /* SGE Flag definition */
 #define MPI3MR_SGEFLAGS_SYSTEM_SIMPLE_END_OF_LIST \
@@ -218,6 +223,7 @@ extern atomic64_t event_counter;
 #define MPI3MR_WRITE_SAME_MAX_LEN_256_BLKS 256
 #define MPI3MR_WRITE_SAME_MAX_LEN_2048_BLKS 2048
 
+#define MPI3MR_DRIVER_EVENT_PROCESS_TRIGGER    (0xFFFD)
 
 /**
  * struct mpi3mr_nvme_pt_sge -  Structure to store SGEs for NVMe
@@ -303,6 +309,7 @@ enum mpi3mr_reset_reason {
 	MPI3MR_RESET_FROM_FIRMWARE = 27,
 	MPI3MR_RESET_FROM_CFG_REQ_TIMEOUT = 29,
 	MPI3MR_RESET_FROM_SAS_TRANSPORT_TIMEOUT = 30,
+	MPI3MR_RESET_FROM_TRIGGER = 31,
 };
 
 #define MPI3MR_RESET_REASON_OSTYPE_LINUX	1
@@ -878,6 +885,24 @@ union mpi3mr_trigger_data {
 	union mpi3_driver2_trigger_element element;
 };
 
+/**
+ * struct trigger_event_data - store trigger related
+ * information.
+ *
+ * @trace_hdb: Trace diag buffer descriptor reference
+ * @fw_hdb: FW diag buffer descriptor reference
+ * @trigger_type: Trigger type
+ * @trigger_specific_data: Trigger specific data
+ * @snapdump: Snapdump enable or disable flag
+ */
+struct trigger_event_data {
+	struct diag_buffer_desc *trace_hdb;
+	struct diag_buffer_desc *fw_hdb;
+	u8 trigger_type;
+	union mpi3mr_trigger_data trigger_specific_data;
+	bool snapdump;
+};
+
 /**
  * struct diag_buffer_desc - memory descriptor structure to
  * store virtual, dma addresses, size, buffer status for host
@@ -1113,6 +1138,9 @@ struct scmd_priv {
  * @ioctl_chain_sge: DMA buffer descriptor for IOCTL chain
  * @ioctl_resp_sge: DMA buffer descriptor for Mgmt cmd response
  * @ioctl_sges_allocated: Flag for IOCTL SGEs allocated or not
+ * @trace_release_trigger_active: Trace trigger active flag
+ * @fw_release_trigger_active: Fw release trigger active flag
+ * @snapdump_trigger_active: Snapdump trigger active flag
  */
 struct mpi3mr_ioc {
 	struct list_head list;
@@ -1310,6 +1338,9 @@ struct mpi3mr_ioc {
 	struct diag_buffer_desc diag_buffers[MPI3MR_MAX_NUM_HDB];
 	struct mpi3_driver_page2 *driver_pg2;
 	spinlock_t trigger_lock;
+	bool snapdump_trigger_active;
+	bool trace_release_trigger_active;
+	bool fw_release_trigger_active;
 };
 
 /**
@@ -1513,4 +1544,16 @@ struct diag_buffer_desc *mpi3mr_diag_buffer_for_type(struct mpi3mr_ioc *mrioc,
 	u8 buf_type);
 int mpi3mr_issue_diag_buf_post(struct mpi3mr_ioc *mrioc,
 	struct diag_buffer_desc *diag_buffer);
+void mpi3mr_set_trigger_data_in_all_hdb(struct mpi3mr_ioc *mrioc,
+	u8 type, union mpi3mr_trigger_data *trigger_data, bool force);
+void mpi3mr_reply_trigger(struct mpi3mr_ioc *mrioc, u16 iocstatus,
+	u32 iocloginfo);
+void mpi3mr_hdb_trigger_data_event(struct mpi3mr_ioc *mrioc,
+	struct trigger_event_data *event_data);
+void mpi3mr_scsisense_trigger(struct mpi3mr_ioc *mrioc, u8 senseky, u8 asc,
+	u8 ascq);
+void mpi3mr_event_trigger(struct mpi3mr_ioc *mrioc, u8 event);
+void mpi3mr_global_trigger(struct mpi3mr_ioc *mrioc, u64 trigger_data);
+void mpi3mr_hdbstatuschg_evt_th(struct mpi3mr_ioc *mrioc,
+	struct mpi3_event_notification_reply *event_reply);
 #endif /*MPI3MR_H_INCLUDED*/