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
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.
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
)
159 if (count
>= sizeof(workarea
))
162 len
= simple_write_to_buffer(workarea
, sizeof(workarea
) - 1, ppos
,
167 workarea
[len
] = '\0';
168 ret
= kstrtouint(workarea
, 0, value
);
175 static ssize_t
xgmac_reg_addr_read(struct file
*filp
, char __user
*buffer
,
176 size_t count
, loff_t
*ppos
)
178 struct xgbe_prv_data
*pdata
= filp
->private_data
;
180 return xgbe_common_read(buffer
, count
, ppos
, pdata
->debugfs_xgmac_reg
);
183 static ssize_t
xgmac_reg_addr_write(struct file
*filp
,
184 const char __user
*buffer
,
185 size_t count
, loff_t
*ppos
)
187 struct xgbe_prv_data
*pdata
= filp
->private_data
;
189 return xgbe_common_write(buffer
, count
, ppos
,
190 &pdata
->debugfs_xgmac_reg
);
193 static ssize_t
xgmac_reg_value_read(struct file
*filp
, char __user
*buffer
,
194 size_t count
, loff_t
*ppos
)
196 struct xgbe_prv_data
*pdata
= filp
->private_data
;
199 value
= XGMAC_IOREAD(pdata
, pdata
->debugfs_xgmac_reg
);
201 return xgbe_common_read(buffer
, count
, ppos
, value
);
204 static ssize_t
xgmac_reg_value_write(struct file
*filp
,
205 const char __user
*buffer
,
206 size_t count
, loff_t
*ppos
)
208 struct xgbe_prv_data
*pdata
= filp
->private_data
;
212 len
= xgbe_common_write(buffer
, count
, ppos
, &value
);
216 XGMAC_IOWRITE(pdata
, pdata
->debugfs_xgmac_reg
, value
);
221 static const struct file_operations xgmac_reg_addr_fops
= {
222 .owner
= THIS_MODULE
,
224 .read
= xgmac_reg_addr_read
,
225 .write
= xgmac_reg_addr_write
,
228 static const struct file_operations xgmac_reg_value_fops
= {
229 .owner
= THIS_MODULE
,
231 .read
= xgmac_reg_value_read
,
232 .write
= xgmac_reg_value_write
,
235 static ssize_t
xpcs_mmd_read(struct file
*filp
, char __user
*buffer
,
236 size_t count
, loff_t
*ppos
)
238 struct xgbe_prv_data
*pdata
= filp
->private_data
;
240 return xgbe_common_read(buffer
, count
, ppos
, pdata
->debugfs_xpcs_mmd
);
243 static ssize_t
xpcs_mmd_write(struct file
*filp
, const char __user
*buffer
,
244 size_t count
, loff_t
*ppos
)
246 struct xgbe_prv_data
*pdata
= filp
->private_data
;
248 return xgbe_common_write(buffer
, count
, ppos
,
249 &pdata
->debugfs_xpcs_mmd
);
252 static ssize_t
xpcs_reg_addr_read(struct file
*filp
, char __user
*buffer
,
253 size_t count
, loff_t
*ppos
)
255 struct xgbe_prv_data
*pdata
= filp
->private_data
;
257 return xgbe_common_read(buffer
, count
, ppos
, pdata
->debugfs_xpcs_reg
);
260 static ssize_t
xpcs_reg_addr_write(struct file
*filp
, const char __user
*buffer
,
261 size_t count
, loff_t
*ppos
)
263 struct xgbe_prv_data
*pdata
= filp
->private_data
;
265 return xgbe_common_write(buffer
, count
, ppos
,
266 &pdata
->debugfs_xpcs_reg
);
269 static ssize_t
xpcs_reg_value_read(struct file
*filp
, char __user
*buffer
,
270 size_t count
, loff_t
*ppos
)
272 struct xgbe_prv_data
*pdata
= filp
->private_data
;
275 value
= pdata
->hw_if
.read_mmd_regs(pdata
, pdata
->debugfs_xpcs_mmd
,
276 pdata
->debugfs_xpcs_reg
);
278 return xgbe_common_read(buffer
, count
, ppos
, value
);
281 static ssize_t
xpcs_reg_value_write(struct file
*filp
,
282 const char __user
*buffer
,
283 size_t count
, loff_t
*ppos
)
285 struct xgbe_prv_data
*pdata
= filp
->private_data
;
289 len
= xgbe_common_write(buffer
, count
, ppos
, &value
);
293 pdata
->hw_if
.write_mmd_regs(pdata
, pdata
->debugfs_xpcs_mmd
,
294 pdata
->debugfs_xpcs_reg
, value
);
299 static const struct file_operations xpcs_mmd_fops
= {
300 .owner
= THIS_MODULE
,
302 .read
= xpcs_mmd_read
,
303 .write
= xpcs_mmd_write
,
306 static const struct file_operations xpcs_reg_addr_fops
= {
307 .owner
= THIS_MODULE
,
309 .read
= xpcs_reg_addr_read
,
310 .write
= xpcs_reg_addr_write
,
313 static const struct file_operations xpcs_reg_value_fops
= {
314 .owner
= THIS_MODULE
,
316 .read
= xpcs_reg_value_read
,
317 .write
= xpcs_reg_value_write
,
320 void xgbe_debugfs_init(struct xgbe_prv_data
*pdata
)
322 struct dentry
*pfile
;
326 pdata
->debugfs_xgmac_reg
= 0;
327 pdata
->debugfs_xpcs_mmd
= 1;
328 pdata
->debugfs_xpcs_reg
= 0;
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");
337 pfile
= debugfs_create_file("xgmac_register", 0600,
338 pdata
->xgbe_debugfs
, pdata
,
339 &xgmac_reg_addr_fops
);
341 netdev_err(pdata
->netdev
, "debugfs_create_file failed\n");
343 pfile
= debugfs_create_file("xgmac_register_value", 0600,
344 pdata
->xgbe_debugfs
, pdata
,
345 &xgmac_reg_value_fops
);
347 netdev_err(pdata
->netdev
, "debugfs_create_file failed\n");
349 pfile
= debugfs_create_file("xpcs_mmd", 0600,
350 pdata
->xgbe_debugfs
, pdata
,
353 netdev_err(pdata
->netdev
, "debugfs_create_file failed\n");
355 pfile
= debugfs_create_file("xpcs_register", 0600,
356 pdata
->xgbe_debugfs
, pdata
,
357 &xpcs_reg_addr_fops
);
359 netdev_err(pdata
->netdev
, "debugfs_create_file failed\n");
361 pfile
= debugfs_create_file("xpcs_register_value", 0600,
362 pdata
->xgbe_debugfs
, pdata
,
363 &xpcs_reg_value_fops
);
365 netdev_err(pdata
->netdev
, "debugfs_create_file failed\n");
370 void xgbe_debugfs_exit(struct xgbe_prv_data
*pdata
)
372 debugfs_remove_recursive(pdata
->xgbe_debugfs
);
373 pdata
->xgbe_debugfs
= NULL
;