X-Git-Url: http://git.ozo.com/?p=openwrt-10.03%2F.git;a=blobdiff_plain;f=target%2Flinux%2Far71xx%2Ffiles%2Fdrivers%2Fnet%2Fag71xx%2Fag71xx_debugfs.c;h=90a50dad07296c7981a4eea3b89381aebc38dadc;hp=8111cad3557dd2d4a5e06ed9b4e528db2bfd024d;hb=bd1ff6ccf38da4bc8de14989cdc904dcfdd7e630;hpb=815bac99e41b069194da91df7a4c3745bae75efc diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c index 8111cad35..90a50dad0 100644 --- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c +++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c @@ -99,38 +99,48 @@ static ssize_t read_file_napi_stats(struct file *file, char __user *user_buf, { struct ag71xx *ag = file->private_data; struct ag71xx_napi_stats *stats = &ag->debug.napi_stats; - char buf[2048]; + 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, sizeof(buf) - len, "%3s %10s %10s\n", + 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, sizeof(buf) - len, + len += snprintf(buf + len, buflen - len, "%3d: %10lu %10lu\n", i, stats->rx[i], stats->tx[i]); - len += snprintf(buf + len, sizeof(buf) - len, "\n"); + len += snprintf(buf + len, buflen - len, "\n"); - len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n", + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", "sum", stats->rx_count, stats->tx_count); - len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n", + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", "avg", rx_avg, tx_avg); - len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n", + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", "max", stats->rx_packets_max, stats->tx_packets_max); - len += snprintf(buf + len, sizeof(buf) - len, "%3s: %10lu %10lu\n", + len += snprintf(buf + len, buflen - len, "%3s: %10lu %10lu\n", "pkt", stats->rx_packets, stats->tx_packets); - return simple_read_from_buffer(user_buf, count, ppos, buf, len); + ret = simple_read_from_buffer(user_buf, count, ppos, buf, len); + kfree(buf); + + return ret; } static const struct file_operations ag71xx_fops_napi_stats = { @@ -139,11 +149,98 @@ static const struct file_operations ag71xx_fops_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 ring_size, + 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_TX_RING_SIZE, 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_RX_RING_SIZE, 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(ag->debug.debugfs_napi_stats); - debugfs_remove(ag->debug.debugfs_int_stats); - debugfs_remove(ag->debug.debugfs_dir); + debugfs_remove_recursive(ag->debug.debugfs_dir); } int ag71xx_debugfs_init(struct ag71xx *ag) @@ -151,31 +248,18 @@ 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) - goto err; - - ag->debug.debugfs_int_stats = - debugfs_create_file("int_stats", - S_IRUGO, - ag->debug.debugfs_dir, - ag, - &ag71xx_fops_int_stats); - if (!ag->debug.debugfs_int_stats) - goto err; - - ag->debug.debugfs_napi_stats = - debugfs_create_file("napi_stats", - S_IRUGO, - ag->debug.debugfs_dir, - ag, - &ag71xx_fops_napi_stats); - if (!ag->debug.debugfs_napi_stats) - goto err; + return -ENOMEM; - return 0; + 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); -err: - ag71xx_debugfs_exit(ag); - return -ENOMEM; + return 0; } int ag71xx_debugfs_root_init(void)