Commit | Line | Data |
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394b701c MP |
1 | /* |
2 | * RapidIO sysfs attributes and support | |
3 | * | |
4 | * Copyright 2005 MontaVista Software, Inc. | |
5 | * Matt Porter <mporter@kernel.crashing.org> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | */ | |
12 | ||
394b701c MP |
13 | #include <linux/kernel.h> |
14 | #include <linux/rio.h> | |
15 | #include <linux/rio_drv.h> | |
16 | #include <linux/stat.h> | |
388b78ad | 17 | #include <linux/capability.h> |
394b701c MP |
18 | |
19 | #include "rio.h" | |
20 | ||
21 | /* Sysfs support */ | |
22 | #define rio_config_attr(field, format_string) \ | |
23 | static ssize_t \ | |
6978bbc0 | 24 | field##_show(struct device *dev, struct device_attribute *attr, char *buf) \ |
394b701c MP |
25 | { \ |
26 | struct rio_dev *rdev = to_rio_dev(dev); \ | |
27 | \ | |
28 | return sprintf(buf, format_string, rdev->field); \ | |
29 | } \ | |
6d39c80b | 30 | static DEVICE_ATTR_RO(field); |
394b701c MP |
31 | |
32 | rio_config_attr(did, "0x%04x\n"); | |
33 | rio_config_attr(vid, "0x%04x\n"); | |
34 | rio_config_attr(device_rev, "0x%08x\n"); | |
35 | rio_config_attr(asm_did, "0x%04x\n"); | |
36 | rio_config_attr(asm_vid, "0x%04x\n"); | |
37 | rio_config_attr(asm_rev, "0x%04x\n"); | |
cd8b974f AB |
38 | rio_config_attr(destid, "0x%04x\n"); |
39 | rio_config_attr(hopcount, "0x%02x\n"); | |
394b701c | 40 | |
6978bbc0 | 41 | static ssize_t routes_show(struct device *dev, struct device_attribute *attr, char *buf) |
394b701c MP |
42 | { |
43 | struct rio_dev *rdev = to_rio_dev(dev); | |
44 | char *str = buf; | |
45 | int i; | |
46 | ||
e0423236 ZW |
47 | for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size); |
48 | i++) { | |
394b701c MP |
49 | if (rdev->rswitch->route_table[i] == RIO_INVALID_ROUTE) |
50 | continue; | |
51 | str += | |
52 | sprintf(str, "%04x %02x\n", i, | |
53 | rdev->rswitch->route_table[i]); | |
54 | } | |
55 | ||
394b701c MP |
56 | return (str - buf); |
57 | } | |
6d39c80b | 58 | static DEVICE_ATTR_RO(routes); |
394b701c | 59 | |
cd8b974f AB |
60 | static ssize_t lprev_show(struct device *dev, |
61 | struct device_attribute *attr, char *buf) | |
62 | { | |
63 | struct rio_dev *rdev = to_rio_dev(dev); | |
64 | ||
65 | return sprintf(buf, "%s\n", | |
66 | (rdev->prev) ? rio_name(rdev->prev) : "root"); | |
67 | } | |
6d39c80b | 68 | static DEVICE_ATTR_RO(lprev); |
cd8b974f AB |
69 | |
70 | static ssize_t lnext_show(struct device *dev, | |
71 | struct device_attribute *attr, char *buf) | |
72 | { | |
73 | struct rio_dev *rdev = to_rio_dev(dev); | |
74 | char *str = buf; | |
75 | int i; | |
76 | ||
77 | if (rdev->pef & RIO_PEF_SWITCH) { | |
78 | for (i = 0; i < RIO_GET_TOTAL_PORTS(rdev->swpinfo); i++) { | |
79 | if (rdev->rswitch->nextdev[i]) | |
80 | str += sprintf(str, "%s\n", | |
81 | rio_name(rdev->rswitch->nextdev[i])); | |
82 | else | |
83 | str += sprintf(str, "null\n"); | |
84 | } | |
85 | } | |
86 | ||
87 | return str - buf; | |
88 | } | |
6d39c80b | 89 | static DEVICE_ATTR_RO(lnext); |
cd8b974f | 90 | |
3bdbb62f AB |
91 | static ssize_t modalias_show(struct device *dev, |
92 | struct device_attribute *attr, char *buf) | |
93 | { | |
94 | struct rio_dev *rdev = to_rio_dev(dev); | |
95 | ||
96 | return sprintf(buf, "rapidio:v%04Xd%04Xav%04Xad%04X\n", | |
97 | rdev->vid, rdev->did, rdev->asm_vid, rdev->asm_did); | |
98 | } | |
6d39c80b GKH |
99 | static DEVICE_ATTR_RO(modalias); |
100 | ||
101 | static struct attribute *rio_dev_attrs[] = { | |
102 | &dev_attr_did.attr, | |
103 | &dev_attr_vid.attr, | |
104 | &dev_attr_device_rev.attr, | |
105 | &dev_attr_asm_did.attr, | |
106 | &dev_attr_asm_vid.attr, | |
107 | &dev_attr_asm_rev.attr, | |
108 | &dev_attr_lprev.attr, | |
109 | &dev_attr_destid.attr, | |
110 | &dev_attr_modalias.attr, | |
111 | NULL, | |
112 | }; | |
3bdbb62f | 113 | |
6d39c80b GKH |
114 | static const struct attribute_group rio_dev_group = { |
115 | .attrs = rio_dev_attrs, | |
394b701c MP |
116 | }; |
117 | ||
6d39c80b GKH |
118 | const struct attribute_group *rio_dev_groups[] = { |
119 | &rio_dev_group, | |
120 | NULL, | |
121 | }; | |
ac38d723 | 122 | |
394b701c | 123 | static ssize_t |
2c3c8bea CW |
124 | rio_read_config(struct file *filp, struct kobject *kobj, |
125 | struct bin_attribute *bin_attr, | |
91a69029 | 126 | char *buf, loff_t off, size_t count) |
394b701c | 127 | { |
a253f1ee | 128 | struct rio_dev *dev = to_rio_dev(kobj_to_dev(kobj)); |
394b701c MP |
129 | unsigned int size = 0x100; |
130 | loff_t init_off = off; | |
131 | u8 *data = (u8 *) buf; | |
132 | ||
133 | /* Several chips lock up trying to read undefined config space */ | |
134 | if (capable(CAP_SYS_ADMIN)) | |
fe41947e | 135 | size = RIO_MAINT_SPACE_SZ; |
394b701c | 136 | |
fe41947e | 137 | if (off >= size) |
394b701c MP |
138 | return 0; |
139 | if (off + count > size) { | |
140 | size -= off; | |
141 | count = size; | |
142 | } else { | |
143 | size = count; | |
144 | } | |
145 | ||
146 | if ((off & 1) && size) { | |
147 | u8 val; | |
148 | rio_read_config_8(dev, off, &val); | |
149 | data[off - init_off] = val; | |
150 | off++; | |
151 | size--; | |
152 | } | |
153 | ||
154 | if ((off & 3) && size > 2) { | |
155 | u16 val; | |
156 | rio_read_config_16(dev, off, &val); | |
157 | data[off - init_off] = (val >> 8) & 0xff; | |
158 | data[off - init_off + 1] = val & 0xff; | |
159 | off += 2; | |
160 | size -= 2; | |
161 | } | |
162 | ||
163 | while (size > 3) { | |
164 | u32 val; | |
165 | rio_read_config_32(dev, off, &val); | |
166 | data[off - init_off] = (val >> 24) & 0xff; | |
167 | data[off - init_off + 1] = (val >> 16) & 0xff; | |
168 | data[off - init_off + 2] = (val >> 8) & 0xff; | |
169 | data[off - init_off + 3] = val & 0xff; | |
170 | off += 4; | |
171 | size -= 4; | |
172 | } | |
173 | ||
174 | if (size >= 2) { | |
175 | u16 val; | |
176 | rio_read_config_16(dev, off, &val); | |
177 | data[off - init_off] = (val >> 8) & 0xff; | |
178 | data[off - init_off + 1] = val & 0xff; | |
179 | off += 2; | |
180 | size -= 2; | |
181 | } | |
182 | ||
183 | if (size > 0) { | |
184 | u8 val; | |
185 | rio_read_config_8(dev, off, &val); | |
186 | data[off - init_off] = val; | |
187 | off++; | |
188 | --size; | |
189 | } | |
190 | ||
191 | return count; | |
192 | } | |
193 | ||
194 | static ssize_t | |
2c3c8bea CW |
195 | rio_write_config(struct file *filp, struct kobject *kobj, |
196 | struct bin_attribute *bin_attr, | |
91a69029 | 197 | char *buf, loff_t off, size_t count) |
394b701c | 198 | { |
a253f1ee | 199 | struct rio_dev *dev = to_rio_dev(kobj_to_dev(kobj)); |
394b701c MP |
200 | unsigned int size = count; |
201 | loff_t init_off = off; | |
202 | u8 *data = (u8 *) buf; | |
203 | ||
fe41947e | 204 | if (off >= RIO_MAINT_SPACE_SZ) |
394b701c | 205 | return 0; |
fe41947e AB |
206 | if (off + count > RIO_MAINT_SPACE_SZ) { |
207 | size = RIO_MAINT_SPACE_SZ - off; | |
394b701c MP |
208 | count = size; |
209 | } | |
210 | ||
211 | if ((off & 1) && size) { | |
212 | rio_write_config_8(dev, off, data[off - init_off]); | |
213 | off++; | |
214 | size--; | |
215 | } | |
216 | ||
217 | if ((off & 3) && (size > 2)) { | |
218 | u16 val = data[off - init_off + 1]; | |
219 | val |= (u16) data[off - init_off] << 8; | |
220 | rio_write_config_16(dev, off, val); | |
221 | off += 2; | |
222 | size -= 2; | |
223 | } | |
224 | ||
225 | while (size > 3) { | |
226 | u32 val = data[off - init_off + 3]; | |
227 | val |= (u32) data[off - init_off + 2] << 8; | |
228 | val |= (u32) data[off - init_off + 1] << 16; | |
229 | val |= (u32) data[off - init_off] << 24; | |
230 | rio_write_config_32(dev, off, val); | |
231 | off += 4; | |
232 | size -= 4; | |
233 | } | |
234 | ||
235 | if (size >= 2) { | |
236 | u16 val = data[off - init_off + 1]; | |
237 | val |= (u16) data[off - init_off] << 8; | |
238 | rio_write_config_16(dev, off, val); | |
239 | off += 2; | |
240 | size -= 2; | |
241 | } | |
242 | ||
243 | if (size) { | |
244 | rio_write_config_8(dev, off, data[off - init_off]); | |
245 | off++; | |
246 | --size; | |
247 | } | |
248 | ||
249 | return count; | |
250 | } | |
251 | ||
252 | static struct bin_attribute rio_config_attr = { | |
253 | .attr = { | |
254 | .name = "config", | |
255 | .mode = S_IRUGO | S_IWUSR, | |
394b701c | 256 | }, |
fe41947e | 257 | .size = RIO_MAINT_SPACE_SZ, |
394b701c MP |
258 | .read = rio_read_config, |
259 | .write = rio_write_config, | |
260 | }; | |
261 | ||
262 | /** | |
263 | * rio_create_sysfs_dev_files - create RIO specific sysfs files | |
264 | * @rdev: device whose entries should be created | |
265 | * | |
266 | * Create files when @rdev is added to sysfs. | |
267 | */ | |
268 | int rio_create_sysfs_dev_files(struct rio_dev *rdev) | |
269 | { | |
5f28c520 | 270 | int err = 0; |
394b701c | 271 | |
ac38d723 AB |
272 | err = device_create_bin_file(&rdev->dev, &rio_config_attr); |
273 | ||
ded05782 | 274 | if (!err && (rdev->pef & RIO_PEF_SWITCH)) { |
cd8b974f AB |
275 | err |= device_create_file(&rdev->dev, &dev_attr_routes); |
276 | err |= device_create_file(&rdev->dev, &dev_attr_lnext); | |
277 | err |= device_create_file(&rdev->dev, &dev_attr_hopcount); | |
ac38d723 AB |
278 | } |
279 | ||
280 | if (err) | |
281 | pr_warning("RIO: Failed to create attribute file(s) for %s\n", | |
282 | rio_name(rdev)); | |
5f28c520 YL |
283 | |
284 | return err; | |
394b701c MP |
285 | } |
286 | ||
287 | /** | |
288 | * rio_remove_sysfs_dev_files - cleanup RIO specific sysfs files | |
289 | * @rdev: device whose entries we should free | |
290 | * | |
291 | * Cleanup when @rdev is removed from sysfs. | |
292 | */ | |
293 | void rio_remove_sysfs_dev_files(struct rio_dev *rdev) | |
294 | { | |
ac38d723 | 295 | device_remove_bin_file(&rdev->dev, &rio_config_attr); |
ded05782 | 296 | if (rdev->pef & RIO_PEF_SWITCH) { |
ac38d723 | 297 | device_remove_file(&rdev->dev, &dev_attr_routes); |
cd8b974f AB |
298 | device_remove_file(&rdev->dev, &dev_attr_lnext); |
299 | device_remove_file(&rdev->dev, &dev_attr_hopcount); | |
ac38d723 | 300 | } |
394b701c | 301 | } |
bc8fcfea AB |
302 | |
303 | static ssize_t bus_scan_store(struct bus_type *bus, const char *buf, | |
304 | size_t count) | |
305 | { | |
306 | long val; | |
bc8fcfea AB |
307 | int rc; |
308 | ||
309 | if (kstrtol(buf, 0, &val) < 0) | |
310 | return -EINVAL; | |
311 | ||
312 | if (val == RIO_MPORT_ANY) { | |
313 | rc = rio_init_mports(); | |
314 | goto exit; | |
315 | } | |
316 | ||
317 | if (val < 0 || val >= RIO_MAX_MPORTS) | |
318 | return -EINVAL; | |
319 | ||
9edbc30b | 320 | rc = rio_mport_scan((int)val); |
bc8fcfea AB |
321 | exit: |
322 | if (!rc) | |
323 | rc = count; | |
324 | ||
325 | return rc; | |
326 | } | |
ed1d2da2 | 327 | static BUS_ATTR(scan, (S_IWUSR|S_IWGRP), NULL, bus_scan_store); |
bc8fcfea | 328 | |
ed1d2da2 GKH |
329 | static struct attribute *rio_bus_attrs[] = { |
330 | &bus_attr_scan.attr, | |
331 | NULL, | |
332 | }; | |
333 | ||
334 | static const struct attribute_group rio_bus_group = { | |
335 | .attrs = rio_bus_attrs, | |
336 | }; | |
337 | ||
338 | const struct attribute_group *rio_bus_groups[] = { | |
339 | &rio_bus_group, | |
340 | NULL, | |
bc8fcfea | 341 | }; |
2aaf308b AB |
342 | |
343 | static ssize_t | |
344 | port_destid_show(struct device *dev, struct device_attribute *attr, | |
345 | char *buf) | |
346 | { | |
347 | struct rio_mport *mport = to_rio_mport(dev); | |
348 | ||
349 | if (mport) | |
350 | return sprintf(buf, "0x%04x\n", mport->host_deviceid); | |
351 | else | |
352 | return -ENODEV; | |
353 | } | |
354 | static DEVICE_ATTR_RO(port_destid); | |
355 | ||
356 | static ssize_t sys_size_show(struct device *dev, struct device_attribute *attr, | |
357 | char *buf) | |
358 | { | |
359 | struct rio_mport *mport = to_rio_mport(dev); | |
360 | ||
361 | if (mport) | |
362 | return sprintf(buf, "%u\n", mport->sys_size); | |
363 | else | |
364 | return -ENODEV; | |
365 | } | |
366 | static DEVICE_ATTR_RO(sys_size); | |
367 | ||
368 | static struct attribute *rio_mport_attrs[] = { | |
369 | &dev_attr_port_destid.attr, | |
370 | &dev_attr_sys_size.attr, | |
371 | NULL, | |
372 | }; | |
373 | ||
374 | static const struct attribute_group rio_mport_group = { | |
375 | .attrs = rio_mport_attrs, | |
376 | }; | |
377 | ||
378 | const struct attribute_group *rio_mport_groups[] = { | |
379 | &rio_mport_group, | |
380 | NULL, | |
381 | }; |