[SCSI] bfa: add debugfs support
- Add debugfs support to obtain firmware trace, driver trace
and read/write to registers.
- debugfs hierarchy:
/sys/kernel/debug/bfa/host#
where the host number corresponds to the one under /sys/class/scsi_host/host#
- Following are the new debugfs entries added:
drvtrc: collect current driver trace
fwtrc: collect current firmware trace.
fwsave: collect last saved fw trace as a result of firmware crash.
regwr: write one word to chip register
regrd: read one or more words from chip register.
Signed-off-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/bfa/bfad_drv.h b/drivers/scsi/bfa/bfad_drv.h
index fb6ac1d..465b8b8 100644
--- a/drivers/scsi/bfa/bfad_drv.h
+++ b/drivers/scsi/bfa/bfad_drv.h
@@ -111,6 +111,9 @@
struct bfad_im_port_s *im_port; /* IM specific data */
struct bfad_tm_port_s *tm_port; /* TM specific data */
struct bfad_ipfc_port_s *ipfc_port; /* IPFC specific data */
+
+ /* port debugfs specific data */
+ struct dentry *port_debugfs_root;
};
/*
@@ -186,6 +189,10 @@
struct fc_host_statistics link_stats;
struct list_head pbc_pcfg_list;
atomic_t wq_reqcnt;
+ /* debugfs specific data */
+ char *regdata;
+ u32 reglen;
+ struct dentry *bfad_dentry_files[5];
};
struct bfad_pcfg_s {
@@ -276,7 +283,9 @@
void bfad_drv_log_level_set(struct bfad_s *bfad);
bfa_status_t bfad_fc4_module_init(void);
void bfad_fc4_module_exit(void);
-int bfad_worker (void *ptr);
+int bfad_worker(void *ptr);
+void bfad_debugfs_init(struct bfad_port_s *port);
+void bfad_debugfs_exit(struct bfad_port_s *port);
void bfad_pci_remove(struct pci_dev *pdev);
int bfad_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid);
@@ -289,6 +298,7 @@
extern int bfa_lun_queue_depth;
extern int bfad_supported_fc4s;
extern int bfa_linkup_delay;
+extern int bfa_debugfs_enable;
extern struct mutex bfad_mutex;
#endif /* __BFAD_DRV_H__ */