/* * Copyright (c) 2008-2011 Atheros Communications Inc. * Copyright (c) 2011 Neratec Solutions AG * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <linux/debugfs.h> #include <linux/export.h> #include "ath9k.h" #include "dfs_debug.h" #define ATH9K_DFS_STAT(s, p) \ len += snprintf(buf + len, size - len, "%28s : %10u\n", s, \ sc->debug.stats.dfs_stats.p); static ssize_t read_file_dfs(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ath_softc *sc = file->private_data; struct ath9k_hw_version *hw_ver = &sc->sc_ah->hw_version; char *buf; unsigned int len = 0, size = 8000; ssize_t retval = 0; buf = kzalloc(size, GFP_KERNEL); if (buf == NULL) return -ENOMEM; len += snprintf(buf + len, size - len, "DFS support for " "macVersion = 0x%x, macRev = 0x%x: %s\n", hw_ver->macVersion, hw_ver->macRev, (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_DFS) ? "enabled" : "disabled"); ATH9K_DFS_STAT("DFS pulses detected ", pulses_detected); ATH9K_DFS_STAT("Datalen discards ", datalen_discards); ATH9K_DFS_STAT("RSSI discards ", rssi_discards); ATH9K_DFS_STAT("BW info discards ", bwinfo_discards); ATH9K_DFS_STAT("Primary channel pulses ", pri_phy_errors); ATH9K_DFS_STAT("Secondary channel pulses", ext_phy_errors); ATH9K_DFS_STAT("Dual channel pulses ", dc_phy_errors); if (len > size) len = size; retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); kfree(buf); return retval; } static int ath9k_dfs_debugfs_open(struct inode *inode, struct file *file) { file->private_data = inode->i_private; return 0; } static const struct file_operations fops_dfs_stats = { .read = read_file_dfs, .open = ath9k_dfs_debugfs_open, .owner = THIS_MODULE, .llseek = default_llseek, }; void ath9k_dfs_init_debug(struct ath_softc *sc) { debugfs_create_file("dfs_stats", S_IRUSR, sc->debug.debugfs_phy, sc, &fops_dfs_stats); }