[realview] update to kernel 3.0

[openwrt.git] / target / linux / ar71xx / files / drivers / net / ag71xx / ag71xx_debugfs.c

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 83bd4b0..65f2be1 100644 (file)
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_debugfs.c
@@ -44,8 +44,8 @@ void ag71xx_debugfs_update_int_stats(struct ag71xx *ag, u32 status)
 static ssize_t read_file_int_stats(struct file *file, char __user *user_buf,
                                   size_t count, loff_t *ppos)
 {
 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,                   \
+#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;
                "%20s: %10lu\n", _label, ag->debug.int_stats._field);
 
        struct ag71xx *ag = file->private_data;


@@ -71,10 +71,175 @@ static const struct file_operations ag71xx_fops_int_stats = {
        .owner  = THIS_MODULE
 };
 
        .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)
 {
 void ag71xx_debugfs_exit(struct ag71xx *ag)
 {

-       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)
 }
 
 int ag71xx_debugfs_init(struct ag71xx *ag)


@@ -82,22 +247,18 @@ 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)
        ag->debug.debugfs_dir = debugfs_create_dir(ag->dev->name,
                                                   ag71xx_debugfs_root);
        if (!ag->debug.debugfs_dir)

-               goto err;
+               return -ENOMEM;

 
 

-       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;
+       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;
 
        return 0;

-
- err:
-       ag71xx_debugfs_exit(ag);
-       return -ENOMEM;

 }
 
 int ag71xx_debugfs_root_init(void)
 }
 
 int ag71xx_debugfs_root_init(void)