diff options
Diffstat (limited to 'drivers/net/wireless/mwifiex/debugfs.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/debugfs.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/drivers/net/wireless/mwifiex/debugfs.c b/drivers/net/wireless/mwifiex/debugfs.c index 3d2fb9af2069..fe1eb74d6703 100644 --- a/drivers/net/wireless/mwifiex/debugfs.c +++ b/drivers/net/wireless/mwifiex/debugfs.c @@ -366,6 +366,103 @@ free_and_exit: return ret; } +/* Sysfs histogram file read handler. + * + * This function is called when the 'histogram' file is opened for reading + * It prints the following histogram information - + * - Number of histogram samples + * - Receive packet number of each rx_rate + * - Receive packet number of each snr + * - Receive packet number of each nosie_flr + * - Receive packet number of each signal streath + */ +static ssize_t +mwifiex_histogram_read(struct file *file, char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct mwifiex_private *priv = + (struct mwifiex_private *)file->private_data; + ssize_t ret; + struct mwifiex_histogram_data *phist_data; + int i, value; + unsigned long page = get_zeroed_page(GFP_KERNEL); + char *p = (char *)page; + + if (!p) + return -ENOMEM; + + if (!priv || !priv->hist_data) + return -EFAULT; + phist_data = priv->hist_data; + + p += sprintf(p, "\n" + "total samples = %d\n", + atomic_read(&phist_data->num_samples)); + + p += sprintf(p, "rx rates (in Mbps): 0=1M 1=2M"); + p += sprintf(p, "2=5.5M 3=11M 4=6M 5=9M 6=12M\n"); + p += sprintf(p, "7=18M 8=24M 9=36M 10=48M 11=54M"); + p += sprintf(p, "12-27=MCS0-15(BW20) 28-43=MCS0-15(BW40)\n"); + + if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) { + p += sprintf(p, "44-53=MCS0-9(VHT:BW20)"); + p += sprintf(p, "54-63=MCS0-9(VHT:BW40)"); + p += sprintf(p, "64-73=MCS0-9(VHT:BW80)\n\n"); + } else { + p += sprintf(p, "\n"); + } + + for (i = 0; i < MWIFIEX_MAX_RX_RATES; i++) { + value = atomic_read(&phist_data->rx_rate[i]); + if (value) + p += sprintf(p, "rx_rate[%02d] = %d\n", i, value); + } + + if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) { + for (i = MWIFIEX_MAX_RX_RATES; i < MWIFIEX_MAX_AC_RX_RATES; + i++) { + value = atomic_read(&phist_data->rx_rate[i]); + if (value) + p += sprintf(p, "rx_rate[%02d] = %d\n", + i, value); + } + } + + for (i = 0; i < MWIFIEX_MAX_SNR; i++) { + value = atomic_read(&phist_data->snr[i]); + if (value) + p += sprintf(p, "snr[%02ddB] = %d\n", i, value); + } + for (i = 0; i < MWIFIEX_MAX_NOISE_FLR; i++) { + value = atomic_read(&phist_data->noise_flr[i]); + if (value) + p += sprintf(p, "noise_flr[-%02ddBm] = %d\n", + (int)(i-128), value); + } + for (i = 0; i < MWIFIEX_MAX_SIG_STRENGTH; i++) { + value = atomic_read(&phist_data->sig_str[i]); + if (value) + p += sprintf(p, "sig_strength[-%02ddBm] = %d\n", + i, value); + } + + ret = simple_read_from_buffer(ubuf, count, ppos, (char *)page, + (unsigned long)p - page); + + return ret; +} + +static ssize_t +mwifiex_histogram_write(struct file *file, const char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct mwifiex_private *priv = (void *)file->private_data; + + if (priv && priv->hist_data) + mwifiex_hist_data_reset(priv); + return 0; +} + static struct mwifiex_debug_info info; /* @@ -832,6 +929,7 @@ MWIFIEX_DFS_FILE_READ_OPS(fw_dump); MWIFIEX_DFS_FILE_OPS(regrdwr); MWIFIEX_DFS_FILE_OPS(rdeeprom); MWIFIEX_DFS_FILE_OPS(hscfg); +MWIFIEX_DFS_FILE_OPS(histogram); /* * This function creates the debug FS directory structure and the files. @@ -855,6 +953,7 @@ mwifiex_dev_debugfs_init(struct mwifiex_private *priv) MWIFIEX_DFS_ADD_FILE(rdeeprom); MWIFIEX_DFS_ADD_FILE(fw_dump); MWIFIEX_DFS_ADD_FILE(hscfg); + MWIFIEX_DFS_ADD_FILE(histogram); } /* |