Commit | Line | Data |
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c5aa9e3b LT |
1 | /* |
2 | * AMD 10Gb Ethernet driver | |
3 | * | |
4 | * This file is available to you under your choice of the following two | |
5 | * licenses: | |
6 | * | |
7 | * License 1: GPLv2 | |
8 | * | |
9 | * Copyright (c) 2014 Advanced Micro Devices, Inc. | |
10 | * | |
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. | |
15 | * | |
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. | |
20 | * | |
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/>. | |
23 | * | |
24 | * This file incorporates work covered by the following copyright and | |
25 | * permission notice: | |
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 | |
29 | * and you. | |
30 | * | |
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: | |
40 | * | |
41 | * The above copyright notice and this permission notice shall be included | |
42 | * in all copies or substantial portions of the Software. | |
43 | * | |
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. | |
55 | * | |
56 | * | |
57 | * License 2: Modified BSD | |
58 | * | |
59 | * Copyright (c) 2014 Advanced Micro Devices, Inc. | |
60 | * All rights reserved. | |
61 | * | |
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 | |
67 | * notice, this list of conditions and the following disclaimer in the | |
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. | |
72 | * | |
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. | |
83 | * | |
84 | * This file incorporates work covered by the following copyright and | |
85 | * permission notice: | |
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 | |
89 | * and you. | |
90 | * | |
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: | |
100 | * | |
101 | * The above copyright notice and this permission notice shall be included | |
102 | * in all copies or substantial portions of the Software. | |
103 | * | |
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. | |
115 | */ | |
116 | ||
117 | #include <linux/debugfs.h> | |
118 | #include <linux/module.h> | |
119 | #include <linux/slab.h> | |
120 | ||
121 | #include "xgbe.h" | |
122 | #include "xgbe-common.h" | |
123 | ||
124 | ||
125 | static ssize_t xgbe_common_read(char __user *buffer, size_t count, | |
126 | loff_t *ppos, unsigned int value) | |
127 | { | |
128 | char *buf; | |
129 | ssize_t len; | |
130 | ||
131 | if (*ppos != 0) | |
132 | return 0; | |
133 | ||
134 | buf = kasprintf(GFP_KERNEL, "0x%08x\n", value); | |
135 | if (!buf) | |
136 | return -ENOMEM; | |
137 | ||
138 | if (count < strlen(buf)) { | |
139 | kfree(buf); | |
140 | return -ENOSPC; | |
141 | } | |
142 | ||
143 | len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf)); | |
144 | kfree(buf); | |
145 | ||
146 | return len; | |
147 | } | |
148 | ||
149 | static ssize_t xgbe_common_write(const char __user *buffer, size_t count, | |
150 | loff_t *ppos, unsigned int *value) | |
151 | { | |
152 | char workarea[32]; | |
153 | ssize_t len; | |
66f95c35 | 154 | int ret; |
c5aa9e3b LT |
155 | |
156 | if (*ppos != 0) | |
157 | return 0; | |
158 | ||
159 | if (count >= sizeof(workarea)) | |
160 | return -ENOSPC; | |
161 | ||
162 | len = simple_write_to_buffer(workarea, sizeof(workarea) - 1, ppos, | |
163 | buffer, count); | |
164 | if (len < 0) | |
165 | return len; | |
166 | ||
167 | workarea[len] = '\0'; | |
66f95c35 LT |
168 | ret = kstrtouint(workarea, 0, value); |
169 | if (ret) | |
170 | return ret; | |
c5aa9e3b LT |
171 | |
172 | return len; | |
173 | } | |
174 | ||
175 | static ssize_t xgmac_reg_addr_read(struct file *filp, char __user *buffer, | |
176 | size_t count, loff_t *ppos) | |
177 | { | |
178 | struct xgbe_prv_data *pdata = filp->private_data; | |
179 | ||
180 | return xgbe_common_read(buffer, count, ppos, pdata->debugfs_xgmac_reg); | |
181 | } | |
182 | ||
183 | static ssize_t xgmac_reg_addr_write(struct file *filp, | |
184 | const char __user *buffer, | |
185 | size_t count, loff_t *ppos) | |
186 | { | |
187 | struct xgbe_prv_data *pdata = filp->private_data; | |
188 | ||
189 | return xgbe_common_write(buffer, count, ppos, | |
190 | &pdata->debugfs_xgmac_reg); | |
191 | } | |
192 | ||
193 | static ssize_t xgmac_reg_value_read(struct file *filp, char __user *buffer, | |
194 | size_t count, loff_t *ppos) | |
195 | { | |
196 | struct xgbe_prv_data *pdata = filp->private_data; | |
197 | unsigned int value; | |
198 | ||
199 | value = XGMAC_IOREAD(pdata, pdata->debugfs_xgmac_reg); | |
200 | ||
201 | return xgbe_common_read(buffer, count, ppos, value); | |
202 | } | |
203 | ||
204 | static ssize_t xgmac_reg_value_write(struct file *filp, | |
205 | const char __user *buffer, | |
206 | size_t count, loff_t *ppos) | |
207 | { | |
208 | struct xgbe_prv_data *pdata = filp->private_data; | |
209 | unsigned int value; | |
210 | ssize_t len; | |
211 | ||
212 | len = xgbe_common_write(buffer, count, ppos, &value); | |
213 | if (len < 0) | |
214 | return len; | |
215 | ||
216 | XGMAC_IOWRITE(pdata, pdata->debugfs_xgmac_reg, value); | |
217 | ||
218 | return len; | |
219 | } | |
220 | ||
221 | static const struct file_operations xgmac_reg_addr_fops = { | |
222 | .owner = THIS_MODULE, | |
223 | .open = simple_open, | |
224 | .read = xgmac_reg_addr_read, | |
225 | .write = xgmac_reg_addr_write, | |
226 | }; | |
227 | ||
228 | static const struct file_operations xgmac_reg_value_fops = { | |
229 | .owner = THIS_MODULE, | |
230 | .open = simple_open, | |
231 | .read = xgmac_reg_value_read, | |
232 | .write = xgmac_reg_value_write, | |
233 | }; | |
234 | ||
235 | static ssize_t xpcs_mmd_read(struct file *filp, char __user *buffer, | |
236 | size_t count, loff_t *ppos) | |
237 | { | |
238 | struct xgbe_prv_data *pdata = filp->private_data; | |
239 | ||
240 | return xgbe_common_read(buffer, count, ppos, pdata->debugfs_xpcs_mmd); | |
241 | } | |
242 | ||
243 | static ssize_t xpcs_mmd_write(struct file *filp, const char __user *buffer, | |
244 | size_t count, loff_t *ppos) | |
245 | { | |
246 | struct xgbe_prv_data *pdata = filp->private_data; | |
247 | ||
248 | return xgbe_common_write(buffer, count, ppos, | |
249 | &pdata->debugfs_xpcs_mmd); | |
250 | } | |
251 | ||
252 | static ssize_t xpcs_reg_addr_read(struct file *filp, char __user *buffer, | |
253 | size_t count, loff_t *ppos) | |
254 | { | |
255 | struct xgbe_prv_data *pdata = filp->private_data; | |
256 | ||
257 | return xgbe_common_read(buffer, count, ppos, pdata->debugfs_xpcs_reg); | |
258 | } | |
259 | ||
260 | static ssize_t xpcs_reg_addr_write(struct file *filp, const char __user *buffer, | |
261 | size_t count, loff_t *ppos) | |
262 | { | |
263 | struct xgbe_prv_data *pdata = filp->private_data; | |
264 | ||
265 | return xgbe_common_write(buffer, count, ppos, | |
266 | &pdata->debugfs_xpcs_reg); | |
267 | } | |
268 | ||
269 | static ssize_t xpcs_reg_value_read(struct file *filp, char __user *buffer, | |
270 | size_t count, loff_t *ppos) | |
271 | { | |
272 | struct xgbe_prv_data *pdata = filp->private_data; | |
273 | unsigned int value; | |
274 | ||
275 | value = pdata->hw_if.read_mmd_regs(pdata, pdata->debugfs_xpcs_mmd, | |
276 | pdata->debugfs_xpcs_reg); | |
277 | ||
278 | return xgbe_common_read(buffer, count, ppos, value); | |
279 | } | |
280 | ||
281 | static ssize_t xpcs_reg_value_write(struct file *filp, | |
282 | const char __user *buffer, | |
283 | size_t count, loff_t *ppos) | |
284 | { | |
285 | struct xgbe_prv_data *pdata = filp->private_data; | |
286 | unsigned int value; | |
287 | ssize_t len; | |
288 | ||
289 | len = xgbe_common_write(buffer, count, ppos, &value); | |
290 | if (len < 0) | |
291 | return len; | |
292 | ||
293 | pdata->hw_if.write_mmd_regs(pdata, pdata->debugfs_xpcs_mmd, | |
294 | pdata->debugfs_xpcs_reg, value); | |
295 | ||
296 | return len; | |
297 | } | |
298 | ||
299 | static const struct file_operations xpcs_mmd_fops = { | |
300 | .owner = THIS_MODULE, | |
301 | .open = simple_open, | |
302 | .read = xpcs_mmd_read, | |
303 | .write = xpcs_mmd_write, | |
304 | }; | |
305 | ||
306 | static const struct file_operations xpcs_reg_addr_fops = { | |
307 | .owner = THIS_MODULE, | |
308 | .open = simple_open, | |
309 | .read = xpcs_reg_addr_read, | |
310 | .write = xpcs_reg_addr_write, | |
311 | }; | |
312 | ||
313 | static const struct file_operations xpcs_reg_value_fops = { | |
314 | .owner = THIS_MODULE, | |
315 | .open = simple_open, | |
316 | .read = xpcs_reg_value_read, | |
317 | .write = xpcs_reg_value_write, | |
318 | }; | |
319 | ||
320 | void xgbe_debugfs_init(struct xgbe_prv_data *pdata) | |
321 | { | |
322 | struct dentry *pfile; | |
323 | char *buf; | |
324 | ||
325 | /* Set defaults */ | |
326 | pdata->debugfs_xgmac_reg = 0; | |
327 | pdata->debugfs_xpcs_mmd = 1; | |
328 | pdata->debugfs_xpcs_reg = 0; | |
329 | ||
330 | buf = kasprintf(GFP_KERNEL, "amd-xgbe-%s", pdata->netdev->name); | |
331 | pdata->xgbe_debugfs = debugfs_create_dir(buf, NULL); | |
332 | if (pdata->xgbe_debugfs == NULL) { | |
333 | netdev_err(pdata->netdev, "debugfs_create_dir failed\n"); | |
334 | return; | |
335 | } | |
336 | ||
337 | pfile = debugfs_create_file("xgmac_register", 0600, | |
338 | pdata->xgbe_debugfs, pdata, | |
339 | &xgmac_reg_addr_fops); | |
340 | if (!pfile) | |
341 | netdev_err(pdata->netdev, "debugfs_create_file failed\n"); | |
342 | ||
343 | pfile = debugfs_create_file("xgmac_register_value", 0600, | |
344 | pdata->xgbe_debugfs, pdata, | |
345 | &xgmac_reg_value_fops); | |
346 | if (!pfile) | |
347 | netdev_err(pdata->netdev, "debugfs_create_file failed\n"); | |
348 | ||
349 | pfile = debugfs_create_file("xpcs_mmd", 0600, | |
350 | pdata->xgbe_debugfs, pdata, | |
351 | &xpcs_mmd_fops); | |
352 | if (!pfile) | |
353 | netdev_err(pdata->netdev, "debugfs_create_file failed\n"); | |
354 | ||
355 | pfile = debugfs_create_file("xpcs_register", 0600, | |
356 | pdata->xgbe_debugfs, pdata, | |
357 | &xpcs_reg_addr_fops); | |
358 | if (!pfile) | |
359 | netdev_err(pdata->netdev, "debugfs_create_file failed\n"); | |
360 | ||
361 | pfile = debugfs_create_file("xpcs_register_value", 0600, | |
362 | pdata->xgbe_debugfs, pdata, | |
363 | &xpcs_reg_value_fops); | |
364 | if (!pfile) | |
365 | netdev_err(pdata->netdev, "debugfs_create_file failed\n"); | |
366 | ||
367 | kfree(buf); | |
368 | } | |
369 | ||
370 | void xgbe_debugfs_exit(struct xgbe_prv_data *pdata) | |
371 | { | |
372 | debugfs_remove_recursive(pdata->xgbe_debugfs); | |
373 | pdata->xgbe_debugfs = NULL; | |
374 | } |