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author | Gabor Juhos <juhosg@openwrt.org> | 2012-01-22 22:38:19 +0000 |
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committer | Gabor Juhos <juhosg@openwrt.org> | 2012-01-22 22:38:19 +0000 |
commit | fa34189a176636de92c5ed7e3cca5bd50a3e35cd (patch) | |
tree | dccbb34ba7bd86e0b13abd8226004f09f5766847 /target/linux/ar71xx/files-3.2/drivers/net/ethernet/atheros/ag71xx/ag71xx_debugfs.c | |
parent | 2899e54bd7c81bb820e15e6afb8f78305ff637fb (diff) | |
download | upstream-fa34189a176636de92c5ed7e3cca5bd50a3e35cd.tar.gz upstream-fa34189a176636de92c5ed7e3cca5bd50a3e35cd.tar.bz2 upstream-fa34189a176636de92c5ed7e3cca5bd50a3e35cd.zip |
ar71xx: add initial support for 3.2
Tested on the following boards:
ALFA AP96
TL-MR3220 v1
TL-WR1043ND v1
TL-WR2543ND v1
TL-WR703N v1
TL-WR741ND v1
TL-WR741ND v4
WNDR3700 v1
WZR-HP-G300NH
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29868 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar71xx/files-3.2/drivers/net/ethernet/atheros/ag71xx/ag71xx_debugfs.c')
-rw-r--r-- | target/linux/ar71xx/files-3.2/drivers/net/ethernet/atheros/ag71xx/ag71xx_debugfs.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/target/linux/ar71xx/files-3.2/drivers/net/ethernet/atheros/ag71xx/ag71xx_debugfs.c b/target/linux/ar71xx/files-3.2/drivers/net/ethernet/atheros/ag71xx/ag71xx_debugfs.c new file mode 100644 index 0000000000..65f2be198f --- /dev/null +++ b/target/linux/ar71xx/files-3.2/drivers/net/ethernet/atheros/ag71xx/ag71xx_debugfs.c @@ -0,0 +1,280 @@ +/* + * Atheros AR71xx built-in ethernet mac driver + * + * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * + * Based on Atheros' AG7100 driver + * + * 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. + */ + +#include <linux/debugfs.h> + +#include "ag71xx.h" + +static struct dentry *ag71xx_debugfs_root; + +static int ag71xx_debugfs_generic_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status) +{ + if (status) + ag->debug.int_stats.total++; + if (status & AG71XX_INT_TX_PS) + ag->debug.int_stats.tx_ps++; + if (status & AG71XX_INT_TX_UR) + ag->debug.int_stats.tx_ur++; + if (status & AG71XX_INT_TX_BE) + ag->debug.int_stats.tx_be++; + if (status & AG71XX_INT_RX_PR) + ag->debug.int_stats.rx_pr++; + if (status & AG71XX_INT_RX_OF) + ag->debug.int_stats.rx_of++; + if (status & AG71XX_INT_RX_BE) + ag->debug.int_stats.rx_be++; +} + +static ssize_t read_file_int_stats(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ +#define PR_INT_STAT(_label, _field) \ + len += snprintf(buf + len, sizeof(buf) - len, \ + "%20s: %10lu\n", _label, ag->debug.int_stats._field); + + struct ag71xx *ag = file->private_data; + char buf[256]; + unsigned int len = 0; + + PR_INT_STAT("TX Packet Sent", tx_ps); + PR_INT_STAT("TX Underrun", tx_ur); + PR_INT_STAT("TX Bus Error", tx_be); + PR_INT_STAT("RX Packet Received", rx_pr); + PR_INT_STAT("RX Overflow", rx_of); + PR_INT_STAT("RX Bus Error", rx_be); + len += snprintf(buf + len, sizeof(buf) - len, "\n"); + PR_INT_STAT("Total", total); + + return simple_read_from_buffer(user_buf, count, ppos, buf, len); +#undef PR_INT_STAT +} + +static const struct file_operations ag71xx_fops_int_stats = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_int_stats, + .owner = THIS_MODULE +}; + +void ag71xx_debugfs_update_napi_stats(struct ag71xx *ag, int rx, int tx) +{ + struct ag71xx_napi_stats *stats = &ag->debug.napi_stats; + + if (rx) { + stats->rx_count++; + stats->rx_packets += rx; + if (rx <= AG71XX_NAPI_WEIGHT) + stats->rx[rx]++; + if (rx > stats->rx_packets_max) + stats->rx_packets_max = rx; + } + + if (tx) { + stats->tx_count++; + stats->tx_packets += tx; + if (tx <= AG71XX_NAPI_WEIGHT) + stats->tx[tx]++; + if (tx > stats->tx_packets_max) + stats->tx_packets_max = tx; + } +} + +static ssize_t read_file_napi_stats(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ag71xx *ag = file->private_data; + struct ag71xx_napi_stats *stats = &ag->debug.napi_stats; + char *buf; + unsigned int buflen; + unsigned int len = 0; + unsigned long rx_avg = 0; + unsigned long tx_avg = 0; + int ret; + int i; + + buflen = 2048; + buf = kmalloc(buflen, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + if (stats->rx_count) + rx_avg = stats->rx_packets / stats->rx_count; + + if (stats->tx_count) + tx_avg = stats->tx_packets / stats->tx_count; + + len += snprintf(buf + len, buflen - len, "%3s %10s %10s\n", + "len", "rx", "tx"); + + for (i = 1; i <= AG71XX_NAPI_WEIGHT; i++) + len += snprintf(buf + len, buflen - len, + "%3d: %10lu %10lu\n", + i, stats->rx[i], stats->tx[i]); + + len += snprintf(buf + len, buflen - len, "\n"); + + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "sum", stats->rx_count, stats->tx_count); + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "avg", rx_avg, tx_avg); + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "max", stats->rx_packets_max, stats->tx_packets_max); + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", + "pkt", stats->rx_packets, stats->tx_packets); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return ret; +} + +static const struct file_operations ag71xx_fops_napi_stats = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_napi_stats, + .owner = THIS_MODULE +}; + +#define DESC_PRINT_LEN 64 + +static ssize_t read_file_ring(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos, + struct ag71xx *ag, + struct ag71xx_ring *ring, + unsigned desc_reg) +{ + char *buf; + unsigned int buflen; + unsigned int len = 0; + unsigned long flags; + ssize_t ret; + int curr; + int dirty; + u32 desc_hw; + int i; + + buflen = (ring->size * DESC_PRINT_LEN); + buf = kmalloc(buflen, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + len += snprintf(buf + len, buflen - len, + "Idx ... %-8s %-8s %-8s %-8s . %-10s\n", + "desc", "next", "data", "ctrl", "timestamp"); + + spin_lock_irqsave(&ag->lock, flags); + + curr = (ring->curr % ring->size); + dirty = (ring->dirty % ring->size); + desc_hw = ag71xx_rr(ag, desc_reg); + for (i = 0; i < ring->size; i++) { + struct ag71xx_buf *ab = &ring->buf[i]; + u32 desc_dma = ((u32) ring->descs_dma) + i * ring->desc_size; + + len += snprintf(buf + len, buflen - len, + "%3d %c%c%c %08x %08x %08x %08x %c %10lu\n", + i, + (i == curr) ? 'C' : ' ', + (i == dirty) ? 'D' : ' ', + (desc_hw == desc_dma) ? 'H' : ' ', + desc_dma, + ab->desc->next, + ab->desc->data, + ab->desc->ctrl, + (ab->desc->ctrl & DESC_EMPTY) ? 'E' : '*', + ab->timestamp); + } + + spin_unlock_irqrestore(&ag->lock, flags); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return ret; +} + +static ssize_t read_file_tx_ring(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ag71xx *ag = file->private_data; + + return read_file_ring(file, user_buf, count, ppos, ag, &ag->tx_ring, + AG71XX_REG_TX_DESC); +} + +static const struct file_operations ag71xx_fops_tx_ring = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_tx_ring, + .owner = THIS_MODULE +}; + +static ssize_t read_file_rx_ring(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ag71xx *ag = file->private_data; + + return read_file_ring(file, user_buf, count, ppos, ag, &ag->rx_ring, + AG71XX_REG_RX_DESC); +} + +static const struct file_operations ag71xx_fops_rx_ring = { + .open = ag71xx_debugfs_generic_open, + .read = read_file_rx_ring, + .owner = THIS_MODULE +}; + +void ag71xx_debugfs_exit(struct ag71xx *ag) +{ + debugfs_remove_recursive(ag->debug.debugfs_dir); +} + +int ag71xx_debugfs_init(struct ag71xx *ag) +{ + ag->debug.debugfs_dir = debugfs_create_dir(ag->dev->name, + ag71xx_debugfs_root); + if (!ag->debug.debugfs_dir) + return -ENOMEM; + + debugfs_create_file("int_stats", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_int_stats); + debugfs_create_file("napi_stats", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_napi_stats); + debugfs_create_file("tx_ring", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_tx_ring); + debugfs_create_file("rx_ring", S_IRUGO, ag->debug.debugfs_dir, + ag, &ag71xx_fops_rx_ring); + + return 0; +} + +int ag71xx_debugfs_root_init(void) +{ + if (ag71xx_debugfs_root) + return -EBUSY; + + ag71xx_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); + if (!ag71xx_debugfs_root) + return -ENOENT; + + return 0; +} + +void ag71xx_debugfs_root_exit(void) +{ + debugfs_remove(ag71xx_debugfs_root); + ag71xx_debugfs_root = NULL; +} |