1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2013 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
28 #include <linux/debugfs.h>
29 #include <linux/module.h>
33 static struct dentry *ixgbe_dbg_root;
35 static char ixgbe_dbg_reg_ops_buf[256] = "";
38 * ixgbe_dbg_reg_ops_read - read for reg_ops datum
39 * @filp: the opened file
40 * @buffer: where to write the data for the user to read
41 * @count: the size of the user's buffer
42 * @ppos: file position offset
44 static ssize_t ixgbe_dbg_reg_ops_read(struct file *filp, char __user *buffer,
45 size_t count, loff_t *ppos)
47 struct ixgbe_adapter *adapter = filp->private_data;
51 /* don't allow partial reads */
55 buf = kasprintf(GFP_KERNEL, "%s: %s\n",
56 adapter->netdev->name,
57 ixgbe_dbg_reg_ops_buf);
61 if (count < strlen(buf)) {
66 len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
73 * ixgbe_dbg_reg_ops_write - write into reg_ops datum
74 * @filp: the opened file
75 * @buffer: where to find the user's data
76 * @count: the length of the user's data
77 * @ppos: file position offset
79 static ssize_t ixgbe_dbg_reg_ops_write(struct file *filp,
80 const char __user *buffer,
81 size_t count, loff_t *ppos)
83 struct ixgbe_adapter *adapter = filp->private_data;
86 /* don't allow partial writes */
89 if (count >= sizeof(ixgbe_dbg_reg_ops_buf))
92 len = simple_write_to_buffer(ixgbe_dbg_reg_ops_buf,
93 sizeof(ixgbe_dbg_reg_ops_buf)-1,
100 ixgbe_dbg_reg_ops_buf[len] = '\0';
102 if (strncmp(ixgbe_dbg_reg_ops_buf, "write", 5) == 0) {
105 cnt = sscanf(&ixgbe_dbg_reg_ops_buf[5], "%x %x", ®, &value);
107 IXGBE_WRITE_REG(&adapter->hw, reg, value);
108 value = IXGBE_READ_REG(&adapter->hw, reg);
109 e_dev_info("write: 0x%08x = 0x%08x\n", reg, value);
111 e_dev_info("write <reg> <value>\n");
113 } else if (strncmp(ixgbe_dbg_reg_ops_buf, "read", 4) == 0) {
116 cnt = sscanf(&ixgbe_dbg_reg_ops_buf[4], "%x", ®);
118 value = IXGBE_READ_REG(&adapter->hw, reg);
119 e_dev_info("read 0x%08x = 0x%08x\n", reg, value);
121 e_dev_info("read <reg>\n");
124 e_dev_info("Unknown command %s\n", ixgbe_dbg_reg_ops_buf);
125 e_dev_info("Available commands:\n");
126 e_dev_info(" read <reg>\n");
127 e_dev_info(" write <reg> <value>\n");
132 static const struct file_operations ixgbe_dbg_reg_ops_fops = {
133 .owner = THIS_MODULE,
135 .read = ixgbe_dbg_reg_ops_read,
136 .write = ixgbe_dbg_reg_ops_write,
139 static char ixgbe_dbg_netdev_ops_buf[256] = "";
142 * ixgbe_dbg_netdev_ops_read - read for netdev_ops datum
143 * @filp: the opened file
144 * @buffer: where to write the data for the user to read
145 * @count: the size of the user's buffer
146 * @ppos: file position offset
148 static ssize_t ixgbe_dbg_netdev_ops_read(struct file *filp,
150 size_t count, loff_t *ppos)
152 struct ixgbe_adapter *adapter = filp->private_data;
156 /* don't allow partial reads */
160 buf = kasprintf(GFP_KERNEL, "%s: %s\n",
161 adapter->netdev->name,
162 ixgbe_dbg_netdev_ops_buf);
166 if (count < strlen(buf)) {
171 len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
178 * ixgbe_dbg_netdev_ops_write - write into netdev_ops datum
179 * @filp: the opened file
180 * @buffer: where to find the user's data
181 * @count: the length of the user's data
182 * @ppos: file position offset
184 static ssize_t ixgbe_dbg_netdev_ops_write(struct file *filp,
185 const char __user *buffer,
186 size_t count, loff_t *ppos)
188 struct ixgbe_adapter *adapter = filp->private_data;
191 /* don't allow partial writes */
194 if (count >= sizeof(ixgbe_dbg_netdev_ops_buf))
197 len = simple_write_to_buffer(ixgbe_dbg_netdev_ops_buf,
198 sizeof(ixgbe_dbg_netdev_ops_buf)-1,
205 ixgbe_dbg_netdev_ops_buf[len] = '\0';
207 if (strncmp(ixgbe_dbg_netdev_ops_buf, "tx_timeout", 10) == 0) {
208 adapter->netdev->netdev_ops->ndo_tx_timeout(adapter->netdev);
209 e_dev_info("tx_timeout called\n");
211 e_dev_info("Unknown command: %s\n", ixgbe_dbg_netdev_ops_buf);
212 e_dev_info("Available commands:\n");
213 e_dev_info(" tx_timeout\n");
218 static const struct file_operations ixgbe_dbg_netdev_ops_fops = {
219 .owner = THIS_MODULE,
221 .read = ixgbe_dbg_netdev_ops_read,
222 .write = ixgbe_dbg_netdev_ops_write,
226 * ixgbe_dbg_adapter_init - setup the debugfs directory for the adapter
227 * @adapter: the adapter that is starting up
229 void ixgbe_dbg_adapter_init(struct ixgbe_adapter *adapter)
231 const char *name = pci_name(adapter->pdev);
232 struct dentry *pfile;
233 adapter->ixgbe_dbg_adapter = debugfs_create_dir(name, ixgbe_dbg_root);
234 if (adapter->ixgbe_dbg_adapter) {
235 pfile = debugfs_create_file("reg_ops", 0600,
236 adapter->ixgbe_dbg_adapter, adapter,
237 &ixgbe_dbg_reg_ops_fops);
239 e_dev_err("debugfs reg_ops for %s failed\n", name);
240 pfile = debugfs_create_file("netdev_ops", 0600,
241 adapter->ixgbe_dbg_adapter, adapter,
242 &ixgbe_dbg_netdev_ops_fops);
244 e_dev_err("debugfs netdev_ops for %s failed\n", name);
246 e_dev_err("debugfs entry for %s failed\n", name);
251 * ixgbe_dbg_adapter_exit - clear out the adapter's debugfs entries
252 * @adapter: the adapter that is exiting
254 void ixgbe_dbg_adapter_exit(struct ixgbe_adapter *adapter)
256 debugfs_remove_recursive(adapter->ixgbe_dbg_adapter);
257 adapter->ixgbe_dbg_adapter = NULL;
261 * ixgbe_dbg_init - start up debugfs for the driver
263 void ixgbe_dbg_init(void)
265 ixgbe_dbg_root = debugfs_create_dir(ixgbe_driver_name, NULL);
266 if (ixgbe_dbg_root == NULL)
267 pr_err("init of debugfs failed\n");
271 * ixgbe_dbg_exit - clean out the driver's debugfs entries
273 void ixgbe_dbg_exit(void)
275 debugfs_remove_recursive(ixgbe_dbg_root);