===================================================================
@@ -21,6 +21,9 @@
#include <linux/mii.h>
#include <linux/eeprom_93cx6.h>
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
#include <linux/spi/spi.h>
#include "ks8851.h"
@@ -128,6 +131,9 @@ struct ks8851_net {
struct spi_transfer spi_xfer1;
struct spi_transfer spi_xfer2[2];
+ struct dentry *debug_root;
+ struct dentry *debug_file;
+
struct eeprom_93cx6 eeprom;
};
@@ -1374,6 +1380,91 @@ static int ks8851_read_selftest(struct k
return 0;
}
+/* debugfs code */
+static int state_show(struct seq_file *seq, void *v)
+{
+ struct ks8851_net *ks = seq->private;
+ struct net_device *ndev = ks->netdev;
+
+ seq_printf(seq, "Register cache:\n");
+ seq_printf(seq, "IEQ\t 0x%04x\n", ks->rc_ier);
+ seq_printf(seq, "RXQCR\t 0x%04x\n", ks->rc_rxqcr);
+ seq_printf(seq, "CCR\t 0x%04x\n", ks->rc_ccr);
+ seq_printf(seq, "RXCR1\t 0x%04x\n", ks->rxctrl.rxcr1);
+ seq_printf(seq, "RXCR2\t 0x%04x\n", ks->rxctrl.rxcr2);
+ seq_printf(seq, "MCHASH\t 0=0x%04x, 1=%04x, 2=0x%04x, 3=0x%04x\n",
+ ks->rxctrl.mchash[0], ks->rxctrl.mchash[1],
+ ks->rxctrl.mchash[2], ks->rxctrl.mchash[3]);
+
+ seq_printf(seq, "\n");
+
+ seq_printf(seq, "tx_space = 0x%04x\n", ks->tx_space);
+ seq_printf(seq, "tx fid\t= 0x%02x\n", ks->fid);
+
+ seq_printf(seq, "\n");
+
+ if (ndev->flags & IFF_MULTICAST) {
+ struct dev_mc_list *mcptr = ndev->mc_list;
+ int i;
+
+ seq_printf(seq, "MC list is %d entries\n", ndev->mc_count);
+
+ for (i = 0; i < ndev->mc_count; i++) {
+ seq_printf(seq, "\t%d: %pM\n", i, mcptr->dmi_addr);
+ mcptr = mcptr->next;
+ }
+ } else
+ seq_printf(seq, "No multicast list set\n");
+
+ return 0;
+}
+
+static int state_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, state_show, inode->i_private);
+}
+
+static const struct file_operations state_fops = {
+ .owner = THIS_MODULE,
+ .open = state_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+/**
+ * ks8851_create_debugfs - create debugfs directory and files
+ * @ks: The driver state
+ *
+ * Create the debugfs entries for the specific device.
+ */
+static void __devinit ks8851_create_debugfs(struct ks8851_net *ks)
+{
+ struct dentry *root;
+ char root_name[32];
+
+ snprintf(root_name, sizeof(root_name), "ks8851_%s",
+ dev_name(&ks->spidev->dev));
+
+ root = debugfs_create_dir(root_name, NULL);
+ if (IS_ERR(root)) {
+ ks_err(ks, "cannot create debugfs root\n");
+ return;
+ }
+
+ ks->debug_root = root;
+ ks->debug_file = debugfs_create_file("state", 0444, root,
+ ks, &state_fops);
+ if (IS_ERR(ks->debug_file))
+ ks_err(ks, "cannot create debugfs state file\n");
+}
+
+static void __devexit ks8851_delete_debugfs(struct ks8851_net *ks)
+{
+ debugfs_remove(ks->debug_file);
+ debugfs_remove(ks->debug_root);
+}
+
/* driver bus management functions */
static int __devinit ks8851_probe(struct spi_device *spi)
@@ -1482,6 +1573,8 @@ static int __devinit ks8851_probe(struct
ndev->dev_addr, ndev->irq,
ks->rc_ccr & CCR_EEPROM ? "has" : "no");
+ ks8851_create_debugfs(ks);
+
return 0;
@@ -1501,6 +1594,7 @@ static int __devexit ks8851_remove(struc
if (netif_msg_drv(priv))
dev_info(&spi->dev, "remove");
+ ks8851_delete_debugfs(priv);
unregister_netdev(priv->netdev);
free_irq(spi->irq, priv);
free_netdev(priv->netdev);
Add the ability to export the state of each network chip via debugfs to show the cached register state and some of the network device state information. Signed-off-by: Ben Dooks <ben@simtec.co.uk> --- drivers/net/ks8851.c | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html