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| 1 | +/* |
| 2 | + * Copyright (c) 2013 Eugene Krasnikov <[email protected]> |
| 3 | + * |
| 4 | + * Permission to use, copy, modify, and/or distribute this software for any |
| 5 | + * purpose with or without fee is hereby granted, provided that the above |
| 6 | + * copyright notice and this permission notice appear in all copies. |
| 7 | + * |
| 8 | + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 9 | + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 10 | + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 11 | + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 12 | + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| 13 | + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| 14 | + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 15 | + */ |
| 16 | + |
| 17 | +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 18 | + |
| 19 | +#include <linux/debugfs.h> |
| 20 | +#include <linux/uaccess.h> |
| 21 | +#include "wcn36xx.h" |
| 22 | +#include "debug.h" |
| 23 | +#include "pmc.h" |
| 24 | + |
| 25 | +#ifdef CONFIG_WCN36XX_DEBUGFS |
| 26 | + |
| 27 | +static int wcn36xx_debugfs_open(struct inode *inode, struct file *file) |
| 28 | +{ |
| 29 | + file->private_data = inode->i_private; |
| 30 | + |
| 31 | + return 0; |
| 32 | +} |
| 33 | + |
| 34 | +static ssize_t read_file_bool_bmps(struct file *file, char __user *user_buf, |
| 35 | + size_t count, loff_t *ppos) |
| 36 | +{ |
| 37 | + struct wcn36xx *wcn = file->private_data; |
| 38 | + struct wcn36xx_vif *vif_priv = NULL; |
| 39 | + struct ieee80211_vif *vif = NULL; |
| 40 | + char buf[3]; |
| 41 | + |
| 42 | + list_for_each_entry(vif_priv, &wcn->vif_list, list) { |
| 43 | + vif = container_of((void *)vif_priv, |
| 44 | + struct ieee80211_vif, |
| 45 | + drv_priv); |
| 46 | + if (NL80211_IFTYPE_STATION == vif->type) { |
| 47 | + if (vif_priv->pw_state == WCN36XX_BMPS) |
| 48 | + buf[0] = '1'; |
| 49 | + else |
| 50 | + buf[0] = '0'; |
| 51 | + break; |
| 52 | + } |
| 53 | + } |
| 54 | + buf[1] = '\n'; |
| 55 | + buf[2] = 0x00; |
| 56 | + |
| 57 | + return simple_read_from_buffer(user_buf, count, ppos, buf, 2); |
| 58 | +} |
| 59 | + |
| 60 | +static ssize_t write_file_bool_bmps(struct file *file, |
| 61 | + const char __user *user_buf, |
| 62 | + size_t count, loff_t *ppos) |
| 63 | +{ |
| 64 | + struct wcn36xx *wcn = file->private_data; |
| 65 | + struct wcn36xx_vif *vif_priv = NULL; |
| 66 | + struct ieee80211_vif *vif = NULL; |
| 67 | + |
| 68 | + char buf[32]; |
| 69 | + int buf_size; |
| 70 | + |
| 71 | + buf_size = min(count, (sizeof(buf)-1)); |
| 72 | + if (copy_from_user(buf, user_buf, buf_size)) |
| 73 | + return -EFAULT; |
| 74 | + |
| 75 | + switch (buf[0]) { |
| 76 | + case 'y': |
| 77 | + case 'Y': |
| 78 | + case '1': |
| 79 | + list_for_each_entry(vif_priv, &wcn->vif_list, list) { |
| 80 | + vif = container_of((void *)vif_priv, |
| 81 | + struct ieee80211_vif, |
| 82 | + drv_priv); |
| 83 | + if (NL80211_IFTYPE_STATION == vif->type) { |
| 84 | + wcn36xx_enable_keep_alive_null_packet(wcn, vif); |
| 85 | + wcn36xx_pmc_enter_bmps_state(wcn, vif); |
| 86 | + } |
| 87 | + } |
| 88 | + break; |
| 89 | + case 'n': |
| 90 | + case 'N': |
| 91 | + case '0': |
| 92 | + list_for_each_entry(vif_priv, &wcn->vif_list, list) { |
| 93 | + vif = container_of((void *)vif_priv, |
| 94 | + struct ieee80211_vif, |
| 95 | + drv_priv); |
| 96 | + if (NL80211_IFTYPE_STATION == vif->type) |
| 97 | + wcn36xx_pmc_exit_bmps_state(wcn, vif); |
| 98 | + } |
| 99 | + break; |
| 100 | + } |
| 101 | + |
| 102 | + return count; |
| 103 | +} |
| 104 | + |
| 105 | +static const struct file_operations fops_wcn36xx_bmps = { |
| 106 | + .open = wcn36xx_debugfs_open, |
| 107 | + .read = read_file_bool_bmps, |
| 108 | + .write = write_file_bool_bmps, |
| 109 | +}; |
| 110 | + |
| 111 | +static ssize_t write_file_dump(struct file *file, |
| 112 | + const char __user *user_buf, |
| 113 | + size_t count, loff_t *ppos) |
| 114 | +{ |
| 115 | + struct wcn36xx *wcn = file->private_data; |
| 116 | + char buf[255], *tmp; |
| 117 | + int buf_size; |
| 118 | + u32 arg[WCN36xx_MAX_DUMP_ARGS]; |
| 119 | + int i; |
| 120 | + |
| 121 | + memset(buf, 0, sizeof(buf)); |
| 122 | + memset(arg, 0, sizeof(arg)); |
| 123 | + |
| 124 | + buf_size = min(count, (sizeof(buf) - 1)); |
| 125 | + if (copy_from_user(buf, user_buf, buf_size)) |
| 126 | + return -EFAULT; |
| 127 | + |
| 128 | + tmp = buf; |
| 129 | + |
| 130 | + for (i = 0; i < WCN36xx_MAX_DUMP_ARGS; i++) { |
| 131 | + char *begin; |
| 132 | + begin = strsep(&tmp, " "); |
| 133 | + if (begin == NULL) |
| 134 | + break; |
| 135 | + |
| 136 | + if (kstrtoul(begin, 0, (unsigned long *)(arg + i)) != 0) |
| 137 | + break; |
| 138 | + } |
| 139 | + |
| 140 | + wcn36xx_info("DUMP args is %d %d %d %d %d\n", arg[0], arg[1], arg[2], |
| 141 | + arg[3], arg[4]); |
| 142 | + wcn36xx_smd_dump_cmd_req(wcn, arg[0], arg[1], arg[2], arg[3], arg[4]); |
| 143 | + |
| 144 | + return count; |
| 145 | +} |
| 146 | + |
| 147 | +static const struct file_operations fops_wcn36xx_dump = { |
| 148 | + .open = wcn36xx_debugfs_open, |
| 149 | + .write = write_file_dump, |
| 150 | +}; |
| 151 | + |
| 152 | +#define ADD_FILE(name, mode, fop, priv_data) \ |
| 153 | + do { \ |
| 154 | + struct dentry *d; \ |
| 155 | + d = debugfs_create_file(__stringify(name), \ |
| 156 | + mode, dfs->rootdir, \ |
| 157 | + priv_data, fop); \ |
| 158 | + dfs->file_##name.dentry = d; \ |
| 159 | + if (IS_ERR(d)) { \ |
| 160 | + wcn36xx_warn("Create the debugfs entry failed");\ |
| 161 | + dfs->file_##name.dentry = NULL; \ |
| 162 | + } \ |
| 163 | + } while (0) |
| 164 | + |
| 165 | + |
| 166 | +void wcn36xx_debugfs_init(struct wcn36xx *wcn) |
| 167 | +{ |
| 168 | + struct wcn36xx_dfs_entry *dfs = &wcn->dfs; |
| 169 | + |
| 170 | + dfs->rootdir = debugfs_create_dir(KBUILD_MODNAME, |
| 171 | + wcn->hw->wiphy->debugfsdir); |
| 172 | + if (IS_ERR(dfs->rootdir)) { |
| 173 | + wcn36xx_warn("Create the debugfs failed\n"); |
| 174 | + dfs->rootdir = NULL; |
| 175 | + } |
| 176 | + |
| 177 | + ADD_FILE(bmps_switcher, S_IRUSR | S_IWUSR, |
| 178 | + &fops_wcn36xx_bmps, wcn); |
| 179 | + ADD_FILE(dump, S_IWUSR, &fops_wcn36xx_dump, wcn); |
| 180 | +} |
| 181 | + |
| 182 | +void wcn36xx_debugfs_exit(struct wcn36xx *wcn) |
| 183 | +{ |
| 184 | + struct wcn36xx_dfs_entry *dfs = &wcn->dfs; |
| 185 | + debugfs_remove_recursive(dfs->rootdir); |
| 186 | +} |
| 187 | + |
| 188 | +#endif /* CONFIG_WCN36XX_DEBUGFS */ |
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