diff options
Diffstat (limited to 'drivers/misc/iwmc3200top/log.c')
| -rw-r--r-- | drivers/misc/iwmc3200top/log.c | 347 |
1 files changed, 347 insertions, 0 deletions
diff --git a/drivers/misc/iwmc3200top/log.c b/drivers/misc/iwmc3200top/log.c new file mode 100644 index 000000000000..d569279698f6 --- /dev/null +++ b/drivers/misc/iwmc3200top/log.c @@ -0,0 +1,347 @@ +/* + * iwmc3200top - Intel Wireless MultiCom 3200 Top Driver + * drivers/misc/iwmc3200top/log.c + * + * Copyright (C) 2009 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + * + * Author Name: Maxim Grabarnik <maxim.grabarnink@intel.com> + * - + * + */ + +#include <linux/kernel.h> +#include <linux/mmc/sdio_func.h> +#include <linux/ctype.h> +#include "fw-msg.h" +#include "iwmc3200top.h" +#include "log.h" + +/* Maximal hexadecimal string size of the FW memdump message */ +#define LOG_MSG_SIZE_MAX 12400 + +/* iwmct_logdefs is a global used by log macros */ +u8 iwmct_logdefs[LOG_SRC_MAX]; +static u8 iwmct_fw_logdefs[FW_LOG_SRC_MAX]; + + +static int _log_set_log_filter(u8 *logdefs, int size, u8 src, u8 logmask) +{ + int i; + + if (src < size) + logdefs[src] = logmask; + else if (src == LOG_SRC_ALL) + for (i = 0; i < size; i++) + logdefs[i] = logmask; + else + return -1; + + return 0; +} + + +int iwmct_log_set_filter(u8 src, u8 logmask) +{ + return _log_set_log_filter(iwmct_logdefs, LOG_SRC_MAX, src, logmask); +} + + +int iwmct_log_set_fw_filter(u8 src, u8 logmask) +{ + return _log_set_log_filter(iwmct_fw_logdefs, + FW_LOG_SRC_MAX, src, logmask); +} + + +static int log_msg_format_hex(char *str, int slen, u8 *ibuf, + int ilen, char *pref) +{ + int pos = 0; + int i; + int len; + + for (pos = 0, i = 0; pos < slen - 2 && pref[i] != '\0'; i++, pos++) + str[pos] = pref[i]; + + for (i = 0; pos < slen - 2 && i < ilen; pos += len, i++) + len = snprintf(&str[pos], slen - pos - 1, " %2.2X", ibuf[i]); + + if (i < ilen) + return -1; + + return 0; +} + +/* NOTE: This function is not thread safe. + Currently it's called only from sdio rx worker - no race there +*/ +void iwmct_log_top_message(struct iwmct_priv *priv, u8 *buf, int len) +{ + struct top_msg *msg; + static char logbuf[LOG_MSG_SIZE_MAX]; + + msg = (struct top_msg *)buf; + + if (len < sizeof(msg->hdr) + sizeof(msg->u.log.log_hdr)) { + LOG_ERROR(priv, FW_MSG, "Log message from TOP " + "is too short %d (expected %zd)\n", + len, sizeof(msg->hdr) + sizeof(msg->u.log.log_hdr)); + return; + } + + if (!(iwmct_fw_logdefs[msg->u.log.log_hdr.logsource] & + BIT(msg->u.log.log_hdr.severity)) || + !(iwmct_logdefs[LOG_SRC_FW_MSG] & BIT(msg->u.log.log_hdr.severity))) + return; + + switch (msg->hdr.category) { + case COMM_CATEGORY_TESTABILITY: + if (!(iwmct_logdefs[LOG_SRC_TST] & + BIT(msg->u.log.log_hdr.severity))) + return; + if (log_msg_format_hex(logbuf, LOG_MSG_SIZE_MAX, buf, + le16_to_cpu(msg->hdr.length) + + sizeof(msg->hdr), "<TST>")) + LOG_WARNING(priv, TST, + "TOP TST message is too long, truncating..."); + LOG_WARNING(priv, TST, "%s\n", logbuf); + break; + case COMM_CATEGORY_DEBUG: + if (msg->hdr.opcode == OP_DBG_ZSTR_MSG) + LOG_INFO(priv, FW_MSG, "%s %s", "<DBG>", + ((u8 *)msg) + sizeof(msg->hdr) + + sizeof(msg->u.log.log_hdr)); + else { + if (log_msg_format_hex(logbuf, LOG_MSG_SIZE_MAX, buf, + le16_to_cpu(msg->hdr.length) + + sizeof(msg->hdr), + "<DBG>")) + LOG_WARNING(priv, FW_MSG, + "TOP DBG message is too long," + "truncating..."); + LOG_WARNING(priv, FW_MSG, "%s\n", logbuf); + } + break; + default: + break; + } +} + +static int _log_get_filter_str(u8 *logdefs, int logdefsz, char *buf, int size) +{ + int i, pos, len; + for (i = 0, pos = 0; (pos < size-1) && (i < logdefsz); i++) { + len = snprintf(&buf[pos], size - pos - 1, "0x%02X%02X,", + i, logdefs[i]); + pos += len; + } + buf[pos-1] = '\n'; + buf[pos] = '\0'; + + if (i < logdefsz) + return -1; + return 0; +} + +int log_get_filter_str(char *buf, int size) +{ + return _log_get_filter_str(iwmct_logdefs, LOG_SRC_MAX, buf, size); +} + +int log_get_fw_filter_str(char *buf, int size) +{ + return _log_get_filter_str(iwmct_fw_logdefs, FW_LOG_SRC_MAX, buf, size); +} + +#define HEXADECIMAL_RADIX 16 +#define LOG_SRC_FORMAT 7 /* log level is in format of "0xXXXX," */ + +ssize_t show_iwmct_log_level(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwmct_priv *priv = dev_get_drvdata(d); + char *str_buf; + int buf_size; + ssize_t ret; + + buf_size = (LOG_SRC_FORMAT * LOG_SRC_MAX) + 1; + str_buf = kzalloc(buf_size, GFP_KERNEL); + if (!str_buf) { + LOG_ERROR(priv, DEBUGFS, + "failed to allocate %d bytes\n", buf_size); + ret = -ENOMEM; + goto exit; + } + + if (log_get_filter_str(str_buf, buf_size) < 0) { + ret = -EINVAL; + goto exit; + } + + ret = sprintf(buf, "%s", str_buf); + +exit: + kfree(str_buf); + return ret; +} + +ssize_t store_iwmct_log_level(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iwmct_priv *priv = dev_get_drvdata(d); + char *token, *str_buf = NULL; + long val; + ssize_t ret = count; + u8 src, mask; + + if (!count) + goto exit; + + str_buf = kzalloc(count, GFP_KERNEL); + if (!str_buf) { + LOG_ERROR(priv, DEBUGFS, + "failed to allocate %zd bytes\n", count); + ret = -ENOMEM; + goto exit; + } + + memcpy(str_buf, buf, count); + + while ((token = strsep(&str_buf, ",")) != NULL) { + while (isspace(*token)) + ++token; + if (strict_strtol(token, HEXADECIMAL_RADIX, &val)) { + LOG_ERROR(priv, DEBUGFS, + "failed to convert string to long %s\n", + token); + ret = -EINVAL; + goto exit; + } + + mask = val & 0xFF; + src = (val & 0XFF00) >> 8; + iwmct_log_set_filter(src, mask); + } + +exit: + kfree(str_buf); + return ret; +} + +ssize_t show_iwmct_log_level_fw(struct device *d, + struct device_attribute *attr, char *buf) +{ + struct iwmct_priv *priv = dev_get_drvdata(d); + char *str_buf; + int buf_size; + ssize_t ret; + + buf_size = (LOG_SRC_FORMAT * FW_LOG_SRC_MAX) + 2; + + str_buf = kzalloc(buf_size, GFP_KERNEL); + if (!str_buf) { + LOG_ERROR(priv, DEBUGFS, + "failed to allocate %d bytes\n", buf_size); + ret = -ENOMEM; + goto exit; + } + + if (log_get_fw_filter_str(str_buf, buf_size) < 0) { + ret = -EINVAL; + goto exit; + } + + ret = sprintf(buf, "%s", str_buf); + +exit: + kfree(str_buf); + return ret; +} + +ssize_t store_iwmct_log_level_fw(struct device *d, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iwmct_priv *priv = dev_get_drvdata(d); + struct top_msg cmd; + char *token, *str_buf = NULL; + ssize_t ret = count; + u16 cmdlen = 0; + int i; + long val; + u8 src, mask; + + if (!count) + goto exit; + + str_buf = kzalloc(count, GFP_KERNEL); + if (!str_buf) { + LOG_ERROR(priv, DEBUGFS, + "failed to allocate %zd bytes\n", count); + ret = -ENOMEM; + goto exit; + } + + memcpy(str_buf, buf, count); + + cmd.hdr.type = COMM_TYPE_H2D; + cmd.hdr.category = COMM_CATEGORY_DEBUG; + cmd.hdr.opcode = CMD_DBG_LOG_LEVEL; + + for (i = 0; ((token = strsep(&str_buf, ",")) != NULL) && + (i < FW_LOG_SRC_MAX); i++) { + + while (isspace(*token)) + ++token; + + if (strict_strtol(token, HEXADECIMAL_RADIX, &val)) { + LOG_ERROR(priv, DEBUGFS, + "failed to convert string to long %s\n", + token); + ret = -EINVAL; + goto exit; + } + + mask = val & 0xFF; /* LSB */ + src = (val & 0XFF00) >> 8; /* 2nd least significant byte. */ + iwmct_log_set_fw_filter(src, mask); + + cmd.u.logdefs[i].logsource = src; + cmd.u.logdefs[i].sevmask = mask; + } + + cmd.hdr.length = cpu_to_le16(i * sizeof(cmd.u.logdefs[0])); + cmdlen = (i * sizeof(cmd.u.logdefs[0]) + sizeof(cmd.hdr)); + + ret = iwmct_send_hcmd(priv, (u8 *)&cmd, cmdlen); + if (ret) { + LOG_ERROR(priv, DEBUGFS, + "Failed to send %d bytes of fwcmd, ret=%zd\n", + cmdlen, ret); + goto exit; + } else + LOG_INFO(priv, DEBUGFS, "fwcmd sent (%d bytes)\n", cmdlen); + + ret = count; + +exit: + kfree(str_buf); + return ret; +} + |