2 * AMD 10Gb Ethernet driver
4 * This file is available to you under your choice of the following two
9 * Copyright (c) 2014 Advanced Micro Devices, Inc.
11 * This file is free software; you may copy, redistribute and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 2 of the License, or (at
14 * your option) any later version.
16 * This file is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * This file incorporates work covered by the following copyright and
26 * The Synopsys DWC ETHER XGMAC Software Driver and documentation
27 * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
28 * Inc. unless otherwise expressly agreed to in writing between Synopsys
31 * The Software IS NOT an item of Licensed Software or Licensed Product
32 * under any End User Software License Agreement or Agreement for Licensed
33 * Product with Synopsys or any supplement thereto. Permission is hereby
34 * granted, free of charge, to any person obtaining a copy of this software
35 * annotated with this license and the Software, to deal in the Software
36 * without restriction, including without limitation the rights to use,
37 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
38 * of the Software, and to permit persons to whom the Software is furnished
39 * to do so, subject to the following conditions:
41 * The above copyright notice and this permission notice shall be included
42 * in all copies or substantial portions of the Software.
44 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
45 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
46 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
47 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
48 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
49 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
50 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
51 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
52 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
53 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
54 * THE POSSIBILITY OF SUCH DAMAGE.
57 * License 2: Modified BSD
59 * Copyright (c) 2014 Advanced Micro Devices, Inc.
60 * All rights reserved.
62 * Redistribution and use in source and binary forms, with or without
63 * modification, are permitted provided that the following conditions are met:
64 * * Redistributions of source code must retain the above copyright
65 * notice, this list of conditions and the following disclaimer.
66 * * Redistributions in binary form must reproduce the above copyright
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68 * documentation and/or other materials provided with the distribution.
69 * * Neither the name of Advanced Micro Devices, Inc. nor the
70 * names of its contributors may be used to endorse or promote products
71 * derived from this software without specific prior written permission.
73 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
74 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
75 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
76 * ARE DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
77 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
78 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
79 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
80 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
81 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
82 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
84 * This file incorporates work covered by the following copyright and
86 * The Synopsys DWC ETHER XGMAC Software Driver and documentation
87 * (hereinafter "Software") is an unsupported proprietary work of Synopsys,
88 * Inc. unless otherwise expressly agreed to in writing between Synopsys
91 * The Software IS NOT an item of Licensed Software or Licensed Product
92 * under any End User Software License Agreement or Agreement for Licensed
93 * Product with Synopsys or any supplement thereto. Permission is hereby
94 * granted, free of charge, to any person obtaining a copy of this software
95 * annotated with this license and the Software, to deal in the Software
96 * without restriction, including without limitation the rights to use,
97 * copy, modify, merge, publish, distribute, sublicense, and/or sell copies
98 * of the Software, and to permit persons to whom the Software is furnished
99 * to do so, subject to the following conditions:
101 * The above copyright notice and this permission notice shall be included
102 * in all copies or substantial portions of the Software.
104 * THIS SOFTWARE IS BEING DISTRIBUTED BY SYNOPSYS SOLELY ON AN "AS IS"
105 * BASIS AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
106 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
107 * PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. IN NO EVENT SHALL SYNOPSYS
108 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
109 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
110 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
111 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
112 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
113 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
114 * THE POSSIBILITY OF SUCH DAMAGE.
117 #include <linux/debugfs.h>
118 #include <linux/module.h>
119 #include <linux/slab.h>
122 #include "xgbe-common.h"
125 static ssize_t xgbe_common_read(char __user *buffer, size_t count,
126 loff_t *ppos, unsigned int value)
134 buf = kasprintf(GFP_KERNEL, "0x%08x\n", value);
138 if (count < strlen(buf)) {
143 len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
149 static ssize_t xgbe_common_write(const char __user *buffer, size_t count,
150 loff_t *ppos, unsigned int *value)
154 unsigned int scan_value;
159 if (count >= sizeof(workarea))
162 len = simple_write_to_buffer(workarea, sizeof(workarea) - 1, ppos,
167 workarea[len] = '\0';
168 if (sscanf(workarea, "%x", &scan_value) == 1)
176 static ssize_t xgmac_reg_addr_read(struct file *filp, char __user *buffer,
177 size_t count, loff_t *ppos)
179 struct xgbe_prv_data *pdata = filp->private_data;
181 return xgbe_common_read(buffer, count, ppos, pdata->debugfs_xgmac_reg);
184 static ssize_t xgmac_reg_addr_write(struct file *filp,
185 const char __user *buffer,
186 size_t count, loff_t *ppos)
188 struct xgbe_prv_data *pdata = filp->private_data;
190 return xgbe_common_write(buffer, count, ppos,
191 &pdata->debugfs_xgmac_reg);
194 static ssize_t xgmac_reg_value_read(struct file *filp, char __user *buffer,
195 size_t count, loff_t *ppos)
197 struct xgbe_prv_data *pdata = filp->private_data;
200 value = XGMAC_IOREAD(pdata, pdata->debugfs_xgmac_reg);
202 return xgbe_common_read(buffer, count, ppos, value);
205 static ssize_t xgmac_reg_value_write(struct file *filp,
206 const char __user *buffer,
207 size_t count, loff_t *ppos)
209 struct xgbe_prv_data *pdata = filp->private_data;
213 len = xgbe_common_write(buffer, count, ppos, &value);
217 XGMAC_IOWRITE(pdata, pdata->debugfs_xgmac_reg, value);
222 static const struct file_operations xgmac_reg_addr_fops = {
223 .owner = THIS_MODULE,
225 .read = xgmac_reg_addr_read,
226 .write = xgmac_reg_addr_write,
229 static const struct file_operations xgmac_reg_value_fops = {
230 .owner = THIS_MODULE,
232 .read = xgmac_reg_value_read,
233 .write = xgmac_reg_value_write,
236 static ssize_t xpcs_mmd_read(struct file *filp, char __user *buffer,
237 size_t count, loff_t *ppos)
239 struct xgbe_prv_data *pdata = filp->private_data;
241 return xgbe_common_read(buffer, count, ppos, pdata->debugfs_xpcs_mmd);
244 static ssize_t xpcs_mmd_write(struct file *filp, const char __user *buffer,
245 size_t count, loff_t *ppos)
247 struct xgbe_prv_data *pdata = filp->private_data;
249 return xgbe_common_write(buffer, count, ppos,
250 &pdata->debugfs_xpcs_mmd);
253 static ssize_t xpcs_reg_addr_read(struct file *filp, char __user *buffer,
254 size_t count, loff_t *ppos)
256 struct xgbe_prv_data *pdata = filp->private_data;
258 return xgbe_common_read(buffer, count, ppos, pdata->debugfs_xpcs_reg);
261 static ssize_t xpcs_reg_addr_write(struct file *filp, const char __user *buffer,
262 size_t count, loff_t *ppos)
264 struct xgbe_prv_data *pdata = filp->private_data;
266 return xgbe_common_write(buffer, count, ppos,
267 &pdata->debugfs_xpcs_reg);
270 static ssize_t xpcs_reg_value_read(struct file *filp, char __user *buffer,
271 size_t count, loff_t *ppos)
273 struct xgbe_prv_data *pdata = filp->private_data;
276 value = pdata->hw_if.read_mmd_regs(pdata, pdata->debugfs_xpcs_mmd,
277 pdata->debugfs_xpcs_reg);
279 return xgbe_common_read(buffer, count, ppos, value);
282 static ssize_t xpcs_reg_value_write(struct file *filp,
283 const char __user *buffer,
284 size_t count, loff_t *ppos)
286 struct xgbe_prv_data *pdata = filp->private_data;
290 len = xgbe_common_write(buffer, count, ppos, &value);
294 pdata->hw_if.write_mmd_regs(pdata, pdata->debugfs_xpcs_mmd,
295 pdata->debugfs_xpcs_reg, value);
300 static const struct file_operations xpcs_mmd_fops = {
301 .owner = THIS_MODULE,
303 .read = xpcs_mmd_read,
304 .write = xpcs_mmd_write,
307 static const struct file_operations xpcs_reg_addr_fops = {
308 .owner = THIS_MODULE,
310 .read = xpcs_reg_addr_read,
311 .write = xpcs_reg_addr_write,
314 static const struct file_operations xpcs_reg_value_fops = {
315 .owner = THIS_MODULE,
317 .read = xpcs_reg_value_read,
318 .write = xpcs_reg_value_write,
321 void xgbe_debugfs_init(struct xgbe_prv_data *pdata)
323 struct dentry *pfile;
327 pdata->debugfs_xgmac_reg = 0;
328 pdata->debugfs_xpcs_mmd = 1;
329 pdata->debugfs_xpcs_reg = 0;
331 buf = kasprintf(GFP_KERNEL, "amd-xgbe-%s", pdata->netdev->name);
332 pdata->xgbe_debugfs = debugfs_create_dir(buf, NULL);
333 if (pdata->xgbe_debugfs == NULL) {
334 netdev_err(pdata->netdev, "debugfs_create_dir failed\n");
338 pfile = debugfs_create_file("xgmac_register", 0600,
339 pdata->xgbe_debugfs, pdata,
340 &xgmac_reg_addr_fops);
342 netdev_err(pdata->netdev, "debugfs_create_file failed\n");
344 pfile = debugfs_create_file("xgmac_register_value", 0600,
345 pdata->xgbe_debugfs, pdata,
346 &xgmac_reg_value_fops);
348 netdev_err(pdata->netdev, "debugfs_create_file failed\n");
350 pfile = debugfs_create_file("xpcs_mmd", 0600,
351 pdata->xgbe_debugfs, pdata,
354 netdev_err(pdata->netdev, "debugfs_create_file failed\n");
356 pfile = debugfs_create_file("xpcs_register", 0600,
357 pdata->xgbe_debugfs, pdata,
358 &xpcs_reg_addr_fops);
360 netdev_err(pdata->netdev, "debugfs_create_file failed\n");
362 pfile = debugfs_create_file("xpcs_register_value", 0600,
363 pdata->xgbe_debugfs, pdata,
364 &xpcs_reg_value_fops);
366 netdev_err(pdata->netdev, "debugfs_create_file failed\n");
371 void xgbe_debugfs_exit(struct xgbe_prv_data *pdata)
373 debugfs_remove_recursive(pdata->xgbe_debugfs);
374 pdata->xgbe_debugfs = NULL;