diff options
| author | Jing Huang <huangj@brocade.com> | 2010-07-08 20:02:55 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2010-07-27 12:04:32 -0500 |
| commit | ab2a9ba189e889b3e8990e52e90d2cd9606b2aa1 (patch) | |
| tree | 0114a0fcb8caf0daee0fa23a8d9b788ad1eef0f2 /drivers/scsi/bfa/bfad.c | |
| parent | 08a17ced7a78064f4f03de7d68b8cd32581f0510 (diff) | |
[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>
Diffstat (limited to 'drivers/scsi/bfa/bfad.c')
| -rw-r--r-- | drivers/scsi/bfa/bfad.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c index a17800e6277..915a29d6c7a 100644 --- a/drivers/scsi/bfa/bfad.c +++ b/drivers/scsi/bfa/bfad.c @@ -57,6 +57,7 @@ static int ipfc_enable = BFA_FALSE; static int fdmi_enable = BFA_TRUE; int bfa_lun_queue_depth = BFAD_LUN_QUEUE_DEPTH; int bfa_linkup_delay = -1; +int bfa_debugfs_enable = 1; module_param(os_name, charp, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(os_name, "OS name of the hba host machine"); @@ -106,6 +107,9 @@ MODULE_PARM_DESC(bfa_linkup_delay, "Link up delay, default=30 secs for boot" module_param(fdmi_enable, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(fdmi_enable, "Enables fdmi registration, default=1," " Range[false:0|true:1]"); +module_param(bfa_debugfs_enable, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(bfa_debugfs_enable, "Enables debugfs feature, default=1," + " Range[false:0|true:1]"); /* * Stores the module parm num_sgpgs value; @@ -903,6 +907,10 @@ bfad_cfg_pport(struct bfad_s *bfad, enum bfa_port_role role) bfad->pport.roles |= BFA_PORT_ROLE_FCP_IM; } + /* Setup the debugfs node for this scsi_host */ + if (bfa_debugfs_enable) + bfad_debugfs_init(&bfad->pport); + bfad->bfad_flags |= BFAD_CFG_PPORT_DONE; out: @@ -912,6 +920,10 @@ out: void bfad_uncfg_pport(struct bfad_s *bfad) { + /* Remove the debugfs node for this scsi_host */ + kfree(bfad->regdata); + bfad_debugfs_exit(&bfad->pport); + if ((bfad->pport.roles & BFA_PORT_ROLE_FCP_IPFC) && ipfc_enable) { bfad_ipfc_port_delete(bfad, &bfad->pport); bfad->pport.roles &= ~BFA_PORT_ROLE_FCP_IPFC; |