From ab2a9ba189e889b3e8990e52e90d2cd9606b2aa1 Mon Sep 17 00:00:00 2001 From: Jing Huang Date: Thu, 8 Jul 2010 20:02:55 -0700 Subject: [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 Signed-off-by: James Bottomley --- drivers/scsi/bfa/bfad.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'drivers/scsi/bfa/bfad.c') diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c index a17800e6277d..915a29d6c7ad 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; -- cgit v1.2.3