Home Home > GIT Browse > openSUSE-15.1
summaryrefslogtreecommitdiff
blob: 73e4b407f162fa0b5b9184736d17850e1d8c35c0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
/*
 * RapidIO sysfs attributes and support
 *
 * Copyright 2005 MontaVista Software, Inc.
 * Matt Porter <mporter@kernel.crashing.org>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#include <linux/kernel.h>
#include <linux/rio.h>
#include <linux/rio_drv.h>
#include <linux/stat.h>
#include <linux/capability.h>

#include "rio.h"

/* Sysfs support */
#define rio_config_attr(field, format_string)					\
static ssize_t								\
field##_show(struct device *dev, struct device_attribute *attr, char *buf)			\
{									\
	struct rio_dev *rdev = to_rio_dev(dev);				\
									\
	return sprintf(buf, format_string, rdev->field);		\
}									\
static DEVICE_ATTR_RO(field);

rio_config_attr(did, "0x%04x\n");
rio_config_attr(vid, "0x%04x\n");
rio_config_attr(device_rev, "0x%08x\n");
rio_config_attr(asm_did, "0x%04x\n");
rio_config_attr(asm_vid, "0x%04x\n");
rio_config_attr(asm_rev, "0x%04x\n");
rio_config_attr(destid, "0x%04x\n");
rio_config_attr(hopcount, "0x%02x\n");

static ssize_t routes_show(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct rio_dev *rdev = to_rio_dev(dev);
	char *str = buf;
	int i;

	for (i = 0; i < RIO_MAX_ROUTE_ENTRIES(rdev->net->hport->sys_size);
			i++) {
		if (rdev->rswitch->route_table[i] == RIO_INVALID_ROUTE)
			continue;
		str +=
		    sprintf(str, "%04x %02x\n", i,
			    rdev->rswitch->route_table[i]);
	}

	return (str - buf);
}
static DEVICE_ATTR_RO(routes);

static ssize_t lprev_show(struct device *dev,
			  struct device_attribute *attr, char *buf)
{
	struct rio_dev *rdev = to_rio_dev(dev);

	return sprintf(buf, "%s\n",
			(rdev->prev) ? rio_name(rdev->prev) : "root");
}
static DEVICE_ATTR_RO(lprev);

static ssize_t lnext_show(struct device *dev,
			  struct device_attribute *attr, char *buf)
{
	struct rio_dev *rdev = to_rio_dev(dev);
	char *str = buf;
	int i;

	if (rdev->pef & RIO_PEF_SWITCH) {
		for (i = 0; i < RIO_GET_TOTAL_PORTS(rdev->swpinfo); i++) {
			if (rdev->rswitch->nextdev[i])
				str += sprintf(str, "%s\n",
					rio_name(rdev->rswitch->nextdev[i]));
			else
				str += sprintf(str, "null\n");
		}
	}

	return str - buf;
}
static DEVICE_ATTR_RO(lnext);

static ssize_t modalias_show(struct device *dev,
			     struct device_attribute *attr, char *buf)
{
	struct rio_dev *rdev = to_rio_dev(dev);

	return sprintf(buf, "rapidio:v%04Xd%04Xav%04Xad%04X\n",
		       rdev->vid, rdev->did, rdev->asm_vid, rdev->asm_did);
}
static DEVICE_ATTR_RO(modalias);

static struct attribute *rio_dev_attrs[] = {
	&dev_attr_did.attr,
	&dev_attr_vid.attr,
	&dev_attr_device_rev.attr,
	&dev_attr_asm_did.attr,
	&dev_attr_asm_vid.attr,
	&dev_attr_asm_rev.attr,
	&dev_attr_lprev.attr,
	&dev_attr_destid.attr,
	&dev_attr_modalias.attr,

	/* Switch-only attributes */
	&dev_attr_routes.attr,
	&dev_attr_lnext.attr,
	&dev_attr_hopcount.attr,
	NULL,
};

static ssize_t
rio_read_config(struct file *filp, struct kobject *kobj,
		struct bin_attribute *bin_attr,
		char *buf, loff_t off, size_t count)
{
	struct rio_dev *dev = to_rio_dev(kobj_to_dev(kobj));
	unsigned int size = 0x100;
	loff_t init_off = off;
	u8 *data = (u8 *) buf;

	/* Several chips lock up trying to read undefined config space */
	if (capable(CAP_SYS_ADMIN))
		size = RIO_MAINT_SPACE_SZ;

	if (off >= size)
		return 0;
	if (off + count > size) {
		size -= off;
		count = size;
	} else {
		size = count;
	}

	if ((off & 1) && size) {
		u8 val;
		rio_read_config_8(dev, off, &val);
		data[off - init_off] = val;
		off++;
		size--;
	}

	if ((off & 3) && size > 2) {
		u16 val;
		rio_read_config_16(dev, off, &val);
		data[off - init_off] = (val >> 8) & 0xff;
		data[off - init_off + 1] = val & 0xff;
		off += 2;
		size -= 2;
	}

	while (size > 3) {
		u32 val;
		rio_read_config_32(dev, off, &val);
		data[off - init_off] = (val >> 24) & 0xff;
		data[off - init_off + 1] = (val >> 16) & 0xff;
		data[off - init_off + 2] = (val >> 8) & 0xff;
		data[off - init_off + 3] = val & 0xff;
		off += 4;
		size -= 4;
	}

	if (size >= 2) {
		u16 val;
		rio_read_config_16(dev, off, &val);
		data[off - init_off] = (val >> 8) & 0xff;
		data[off - init_off + 1] = val & 0xff;
		off += 2;
		size -= 2;
	}

	if (size > 0) {
		u8 val;
		rio_read_config_8(dev, off, &val);
		data[off - init_off] = val;
		off++;
		--size;
	}

	return count;
}

static ssize_t
rio_write_config(struct file *filp, struct kobject *kobj,
		 struct bin_attribute *bin_attr,
		 char *buf, loff_t off, size_t count)
{
	struct rio_dev *dev = to_rio_dev(kobj_to_dev(kobj));
	unsigned int size = count;
	loff_t init_off = off;
	u8 *data = (u8 *) buf;

	if (off >= RIO_MAINT_SPACE_SZ)
		return 0;
	if (off + count > RIO_MAINT_SPACE_SZ) {
		size = RIO_MAINT_SPACE_SZ - off;
		count = size;
	}

	if ((off & 1) && size) {
		rio_write_config_8(dev, off, data[off - init_off]);
		off++;
		size--;
	}

	if ((off & 3) && (size > 2)) {
		u16 val = data[off - init_off + 1];
		val |= (u16) data[off - init_off] << 8;
		rio_write_config_16(dev, off, val);
		off += 2;
		size -= 2;
	}

	while (size > 3) {
		u32 val = data[off - init_off + 3];
		val |= (u32) data[off - init_off + 2] << 8;
		val |= (u32) data[off - init_off + 1] << 16;
		val |= (u32) data[off - init_off] << 24;
		rio_write_config_32(dev, off, val);
		off += 4;
		size -= 4;
	}

	if (size >= 2) {
		u16 val = data[off - init_off + 1];
		val |= (u16) data[off - init_off] << 8;
		rio_write_config_16(dev, off, val);
		off += 2;
		size -= 2;
	}

	if (size) {
		rio_write_config_8(dev, off, data[off - init_off]);
		off++;
		--size;
	}

	return count;
}

static struct bin_attribute rio_config_attr = {
	.attr = {
		 .name = "config",
		 .mode = S_IRUGO | S_IWUSR,
		 },
	.size = RIO_MAINT_SPACE_SZ,
	.read = rio_read_config,
	.write = rio_write_config,
};

static struct bin_attribute *rio_dev_bin_attrs[] = {
	&rio_config_attr,
	NULL,
};

static umode_t rio_dev_is_attr_visible(struct kobject *kobj,
				       struct attribute *attr, int n)
{
	struct rio_dev *rdev = to_rio_dev(kobj_to_dev(kobj));
	umode_t mode = attr->mode;

	if (!(rdev->pef & RIO_PEF_SWITCH) &&
	    (attr == &dev_attr_routes.attr ||
	     attr == &dev_attr_lnext.attr ||
	     attr == &dev_attr_hopcount.attr)) {
		/*
		 * Hide switch-specific attributes for a non-switch device.
		 */
		mode = 0;
	}

	return mode;
}

static const struct attribute_group rio_dev_group = {
	.attrs		= rio_dev_attrs,
	.is_visible	= rio_dev_is_attr_visible,
	.bin_attrs	= rio_dev_bin_attrs,
};

const struct attribute_group *rio_dev_groups[] = {
	&rio_dev_group,
	NULL,
};

static ssize_t bus_scan_store(struct bus_type *bus, const char *buf,
				size_t count)
{
	long val;
	int rc;

	if (kstrtol(buf, 0, &val) < 0)
		return -EINVAL;

	if (val == RIO_MPORT_ANY) {
		rc = rio_init_mports();
		goto exit;
	}

	if (val < 0 || val >= RIO_MAX_MPORTS)
		return -EINVAL;

	rc = rio_mport_scan((int)val);
exit:
	if (!rc)
		rc = count;

	return rc;
}
static BUS_ATTR(scan, (S_IWUSR|S_IWGRP), NULL, bus_scan_store);

static struct attribute *rio_bus_attrs[] = {
	&bus_attr_scan.attr,
	NULL,
};

static const struct attribute_group rio_bus_group = {
	.attrs = rio_bus_attrs,
};

const struct attribute_group *rio_bus_groups[] = {
	&rio_bus_group,
	NULL,
};

static ssize_t
port_destid_show(struct device *dev, struct device_attribute *attr,
		 char *buf)
{
	struct rio_mport *mport = to_rio_mport(dev);

	if (mport)
		return sprintf(buf, "0x%04x\n", mport->host_deviceid);
	else
		return -ENODEV;
}
static DEVICE_ATTR_RO(port_destid);

static ssize_t sys_size_show(struct device *dev, struct device_attribute *attr,
			   char *buf)
{
	struct rio_mport *mport = to_rio_mport(dev);

	if (mport)
		return sprintf(buf, "%u\n", mport->sys_size);
	else
		return -ENODEV;
}
static DEVICE_ATTR_RO(sys_size);

static struct attribute *rio_mport_attrs[] = {
	&dev_attr_port_destid.attr,
	&dev_attr_sys_size.attr,
	NULL,
};

static const struct attribute_group rio_mport_group = {
	.attrs = rio_mport_attrs,
};

const struct attribute_group *rio_mport_groups[] = {
	&rio_mport_group,
	NULL,
};