diff options
Diffstat (limited to 'drivers/scsi/bfa/bfa_log.c')
| -rw-r--r-- | drivers/scsi/bfa/bfa_log.c | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/drivers/scsi/bfa/bfa_log.c b/drivers/scsi/bfa/bfa_log.c new file mode 100644 index 000000000000..c2735e55cf03 --- /dev/null +++ b/drivers/scsi/bfa/bfa_log.c @@ -0,0 +1,346 @@ +/* + * Copyright (c) 2005-2009 Brocade Communications Systems, Inc. + * All rights reserved + * www.brocade.com + * + * Linux driver for Brocade Fibre Channel Host Bus Adapter. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License (GPL) Version 2 as + * published by the Free Software Foundation + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +/** + * bfa_log.c BFA log library + */ + +#include <bfa_os_inc.h> +#include <cs/bfa_log.h> + +/* + * global log info structure + */ +struct bfa_log_info_s { + u32 start_idx; /* start index for a module */ + u32 total_count; /* total count for a module */ + enum bfa_log_severity level; /* global log level */ + bfa_log_cb_t cbfn; /* callback function */ +}; + +static struct bfa_log_info_s bfa_log_info[BFA_LOG_MODULE_ID_MAX + 1]; +static u32 bfa_log_msg_total_count; +static int bfa_log_initialized; + +static char *bfa_log_severity[] = + { "[none]", "[critical]", "[error]", "[warn]", "[info]", "" }; + +/** + * BFA log library initialization + * + * The log library initialization includes the following, + * - set log instance name and callback function + * - read the message array generated from xml files + * - calculate start index for each module + * - calculate message count for each module + * - perform error checking + * + * @param[in] log_mod - log module info + * @param[in] instance_name - instance name + * @param[in] cbfn - callback function + * + * It return 0 on success, or -1 on failure + */ +int +bfa_log_init(struct bfa_log_mod_s *log_mod, char *instance_name, + bfa_log_cb_t cbfn) +{ + struct bfa_log_msgdef_s *msg; + u32 pre_mod_id = 0; + u32 cur_mod_id = 0; + u32 i, pre_idx, idx, msg_id; + + /* + * set instance name + */ + if (log_mod) { + strncpy(log_mod->instance_info, instance_name, + sizeof(log_mod->instance_info)); + log_mod->cbfn = cbfn; + for (i = 0; i <= BFA_LOG_MODULE_ID_MAX; i++) + log_mod->log_level[i] = BFA_LOG_WARNING; + } + + if (bfa_log_initialized) + return 0; + + for (i = 0; i <= BFA_LOG_MODULE_ID_MAX; i++) { + bfa_log_info[i].start_idx = 0; + bfa_log_info[i].total_count = 0; + bfa_log_info[i].level = BFA_LOG_WARNING; + bfa_log_info[i].cbfn = cbfn; + } + + pre_idx = 0; + idx = 0; + msg = bfa_log_msg_array; + msg_id = BFA_LOG_GET_MSG_ID(msg); + pre_mod_id = BFA_LOG_GET_MOD_ID(msg_id); + while (msg_id != 0) { + cur_mod_id = BFA_LOG_GET_MOD_ID(msg_id); + + if (cur_mod_id > BFA_LOG_MODULE_ID_MAX) { + cbfn(log_mod, msg_id, + "%s%s log: module id %u out of range\n", + BFA_LOG_CAT_NAME, + bfa_log_severity[BFA_LOG_ERROR], + cur_mod_id); + return -1; + } + + if (pre_mod_id > BFA_LOG_MODULE_ID_MAX) { + cbfn(log_mod, msg_id, + "%s%s log: module id %u out of range\n", + BFA_LOG_CAT_NAME, + bfa_log_severity[BFA_LOG_ERROR], + pre_mod_id); + return -1; + } + + if (cur_mod_id != pre_mod_id) { + bfa_log_info[pre_mod_id].start_idx = pre_idx; + bfa_log_info[pre_mod_id].total_count = idx - pre_idx; + pre_mod_id = cur_mod_id; + pre_idx = idx; + } + + idx++; + msg++; + msg_id = BFA_LOG_GET_MSG_ID(msg); + } + + bfa_log_info[cur_mod_id].start_idx = pre_idx; + bfa_log_info[cur_mod_id].total_count = idx - pre_idx; + bfa_log_msg_total_count = idx; + + cbfn(log_mod, msg_id, "%s%s log: init OK, msg total count %u\n", + BFA_LOG_CAT_NAME, + bfa_log_severity[BFA_LOG_INFO], bfa_log_msg_total_count); + + bfa_log_initialized = 1; + + return 0; +} + +/** + * BFA log set log level for a module + * + * @param[in] log_mod - log module info + * @param[in] mod_id - module id + * @param[in] log_level - log severity level + * + * It return BFA_STATUS_OK on success, or > 0 on failure + */ +bfa_status_t +bfa_log_set_level(struct bfa_log_mod_s *log_mod, int mod_id, + enum bfa_log_severity log_level) +{ + if (mod_id <= BFA_LOG_UNUSED_ID || mod_id > BFA_LOG_MODULE_ID_MAX) + return BFA_STATUS_EINVAL; + + if (log_level <= BFA_LOG_INVALID || log_level > BFA_LOG_LEVEL_MAX) + return BFA_STATUS_EINVAL; + + if (log_mod) + log_mod->log_level[mod_id] = log_level; + else + bfa_log_info[mod_id].level = log_level; + + return BFA_STATUS_OK; +} + +/** + * BFA log set log level for all modules + * + * @param[in] log_mod - log module info + * @param[in] log_level - log severity level + * + * It return BFA_STATUS_OK on success, or > 0 on failure + */ +bfa_status_t +bfa_log_set_level_all(struct bfa_log_mod_s *log_mod, + enum bfa_log_severity log_level) +{ + int mod_id = BFA_LOG_UNUSED_ID + 1; + + if (log_level <= BFA_LOG_INVALID || log_level > BFA_LOG_LEVEL_MAX) + return BFA_STATUS_EINVAL; + + if (log_mod) { + for (; mod_id <= BFA_LOG_MODULE_ID_MAX; mod_id++) + log_mod->log_level[mod_id] = log_level; + } else { + for (; mod_id <= BFA_LOG_MODULE_ID_MAX; mod_id++) + bfa_log_info[mod_id].level = log_level; + } + + return BFA_STATUS_OK; +} + +/** + * BFA log set log level for all aen sub-modules + * + * @param[in] log_mod - log module info + * @param[in] log_level - log severity level + * + * It return BFA_STATUS_OK on success, or > 0 on failure + */ +bfa_status_t +bfa_log_set_level_aen(struct bfa_log_mod_s *log_mod, + enum bfa_log_severity log_level) +{ + int mod_id = BFA_LOG_AEN_MIN + 1; + + if (log_mod) { + for (; mod_id <= BFA_LOG_AEN_MAX; mod_id++) + log_mod->log_level[mod_id] = log_level; + } else { + for (; mod_id <= BFA_LOG_AEN_MAX; mod_id++) + bfa_log_info[mod_id].level = log_level; + } + + return BFA_STATUS_OK; +} + +/** + * BFA log get log level for a module + * + * @param[in] log_mod - log module info + * @param[in] mod_id - module id + * + * It returns log level or -1 on error + */ +enum bfa_log_severity +bfa_log_get_level(struct bfa_log_mod_s *log_mod, int mod_id) +{ + if (mod_id <= BFA_LOG_UNUSED_ID || mod_id > BFA_LOG_MODULE_ID_MAX) + return BFA_LOG_INVALID; + + if (log_mod) + return (log_mod->log_level[mod_id]); + else + return (bfa_log_info[mod_id].level); +} + +enum bfa_log_severity +bfa_log_get_msg_level(struct bfa_log_mod_s *log_mod, u32 msg_id) +{ + struct bfa_log_msgdef_s *msg; + u32 mod = BFA_LOG_GET_MOD_ID(msg_id); + u32 idx = BFA_LOG_GET_MSG_IDX(msg_id) - 1; + + if (!bfa_log_initialized) + return BFA_LOG_INVALID; + + if (mod > BFA_LOG_MODULE_ID_MAX) + return BFA_LOG_INVALID; + + if (idx >= bfa_log_info[mod].total_count) { + bfa_log_info[mod].cbfn(log_mod, msg_id, + "%s%s log: inconsistent idx %u vs. total count %u\n", + BFA_LOG_CAT_NAME, bfa_log_severity[BFA_LOG_ERROR], idx, + bfa_log_info[mod].total_count); + return BFA_LOG_INVALID; + } + + msg = bfa_log_msg_array + bfa_log_info[mod].start_idx + idx; + if (msg_id != BFA_LOG_GET_MSG_ID(msg)) { + bfa_log_info[mod].cbfn(log_mod, msg_id, + "%s%s log: inconsistent msg id %u array msg id %u\n", + BFA_LOG_CAT_NAME, bfa_log_severity[BFA_LOG_ERROR], + msg_id, BFA_LOG_GET_MSG_ID(msg)); + return BFA_LOG_INVALID; + } + + return BFA_LOG_GET_SEVERITY(msg); +} + +/** + * BFA log message handling + * + * BFA log message handling finds the message based on message id and prints + * out the message based on its format and arguments. It also does prefix + * the severity etc. + * + * @param[in] log_mod - log module info + * @param[in] msg_id - message id + * @param[in] ... - message arguments + * + * It return 0 on success, or -1 on errors + */ +int +bfa_log(struct bfa_log_mod_s *log_mod, u32 msg_id, ...) +{ + va_list ap; + char buf[256]; + struct bfa_log_msgdef_s *msg; + int log_level; + u32 mod = BFA_LOG_GET_MOD_ID(msg_id); + u32 idx = BFA_LOG_GET_MSG_IDX(msg_id) - 1; + + if (!bfa_log_initialized) + return -1; + + if (mod > BFA_LOG_MODULE_ID_MAX) + return -1; + + if (idx >= bfa_log_info[mod].total_count) { + bfa_log_info[mod]. + cbfn + (log_mod, msg_id, + "%s%s log: inconsistent idx %u vs. total count %u\n", + BFA_LOG_CAT_NAME, bfa_log_severity[BFA_LOG_ERROR], idx, + bfa_log_info[mod].total_count); + return -1; + } + + msg = bfa_log_msg_array + bfa_log_info[mod].start_idx + idx; + if (msg_id != BFA_LOG_GET_MSG_ID(msg)) { + bfa_log_info[mod]. + cbfn + (log_mod, msg_id, + "%s%s log: inconsistent msg id %u array msg id %u\n", + BFA_LOG_CAT_NAME, bfa_log_severity[BFA_LOG_ERROR], + msg_id, BFA_LOG_GET_MSG_ID(msg)); + return -1; + } + + log_level = log_mod ? log_mod->log_level[mod] : bfa_log_info[mod].level; + if ((BFA_LOG_GET_SEVERITY(msg) > log_level) && + (msg->attributes != BFA_LOG_ATTR_NONE)) + return 0; + + va_start(ap, msg_id); + bfa_os_vsprintf(buf, BFA_LOG_GET_MSG_FMT_STRING(msg), ap); + va_end(ap); + + if (log_mod) + log_mod->cbfn(log_mod, msg_id, "%s[%s]%s%s %s: %s\n", + BFA_LOG_CAT_NAME, log_mod->instance_info, + bfa_log_severity[BFA_LOG_GET_SEVERITY(msg)], + (msg->attributes & BFA_LOG_ATTR_AUDIT) + ? " (audit) " : "", msg->msg_value, buf); + else + bfa_log_info[mod].cbfn(log_mod, msg_id, "%s%s%s %s: %s\n", + BFA_LOG_CAT_NAME, + bfa_log_severity[BFA_LOG_GET_SEVERITY(msg)], + (msg->attributes & BFA_LOG_ATTR_AUDIT) ? + " (audit) " : "", msg->msg_value, buf); + + return 0; +} + |