projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 29942bc1 ZK |
1 | /* |
| 2 | * Copyright (c) 2008-2011 Atheros Communications Inc. | |
| 3 | * Copyright (c) 2011 Neratec Solutions AG | |
| 4 | * | |
| 5 | * Permission to use, copy, modify, and/or distribute this software for any | |
| 6 | * purpose with or without fee is hereby granted, provided that the above | |
| 7 | * copyright notice and this permission notice appear in all copies. | |
| 8 | * | |
| 9 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 10 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 11 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 12 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 13 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 14 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 15 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 16 | */ | |
| 17 | ||
| 18 | #include <linux/debugfs.h> | |
| 19 | #include <linux/export.h> | |
| 20 | ||
| 21 | #include "ath9k.h" | |
| 22 | #include "dfs_debug.h" | |
| 23 | ||
| 24 | #define ATH9K_DFS_STAT(s, p) \ | |
| 25 | len += snprintf(buf + len, size - len, "%28s : %10u\n", s, \ | |
| 26 | sc->debug.stats.dfs_stats.p); | |
| 27 | ||
| 28 | static ssize_t read_file_dfs(struct file *file, char __user *user_buf, | |
| 29 | size_t count, loff_t *ppos) | |
| 30 | { | |
| 31 | struct ath_softc *sc = file->private_data; | |
| 32 | struct ath9k_hw_version *hw_ver = &sc->sc_ah->hw_version; | |
| 33 | char *buf; | |
| 34 | unsigned int len = 0, size = 8000; | |
| 35 | ssize_t retval = 0; | |
| 36 | ||
| 37 | buf = kzalloc(size, GFP_KERNEL); | |
| 38 | if (buf == NULL) | |
| 39 | return -ENOMEM; | |
| 40 | ||
| 41 | len += snprintf(buf + len, size - len, "DFS support for " | |
| 42 | "macVersion = 0x%x, macRev = 0x%x: %s\n", | |
| 43 | hw_ver->macVersion, hw_ver->macRev, | |
| 44 | (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_DFS) ? | |
| 45 | "enabled" : "disabled"); | |
| 46 | ATH9K_DFS_STAT("DFS pulses detected ", pulses_detected); | |
| 47 | ATH9K_DFS_STAT("Datalen discards ", datalen_discards); | |
| 48 | ATH9K_DFS_STAT("RSSI discards ", rssi_discards); | |
| 49 | ATH9K_DFS_STAT("BW info discards ", bwinfo_discards); | |
| 50 | ATH9K_DFS_STAT("Primary channel pulses ", pri_phy_errors); | |
| 51 | ATH9K_DFS_STAT("Secondary channel pulses", ext_phy_errors); | |
| 52 | ATH9K_DFS_STAT("Dual channel pulses ", dc_phy_errors); | |
| 53 | ||
| 54 | if (len > size) | |
| 55 | len = size; | |
| 56 | ||
| 57 | retval = simple_read_from_buffer(user_buf, count, ppos, buf, len); | |
| 58 | kfree(buf); | |
| 59 | ||
| 60 | return retval; | |
| 61 | } | |
| 62 | ||
| 63 | static int ath9k_dfs_debugfs_open(struct inode *inode, struct file *file) | |
| 64 | { | |
| 65 | file->private_data = inode->i_private; | |
| 66 | ||
| 67 | return 0; | |
| 68 | } | |
| 69 | ||
| 70 | static const struct file_operations fops_dfs_stats = { | |
| 71 | .read = read_file_dfs, | |
| 72 | .open = ath9k_dfs_debugfs_open, | |
| 73 | .owner = THIS_MODULE, | |
| 74 | .llseek = default_llseek, | |
| 75 | }; | |
| 76 | ||
| 77 | void ath9k_dfs_init_debug(struct ath_softc *sc) | |
| 78 | { | |
| 79 | debugfs_create_file("dfs_stats", S_IRUSR, | |
| 80 | sc->debug.debugfs_phy, sc, &fops_dfs_stats); | |
| 81 | } |