summaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/netronome/nfp/nfp_devlink.c
blob: e9eca99cf4937c6e0abbe18791ef772a6f40f31f (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
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
/* Copyright (C) 2017-2018 Netronome Systems, Inc. */

#include <linux/rtnetlink.h>
#include <net/devlink.h>

#include "nfpcore/nfp.h"
#include "nfpcore/nfp_nsp.h"
#include "nfp_app.h"
#include "nfp_main.h"
#include "nfp_port.h"

static int
nfp_devlink_fill_eth_port(struct nfp_port *port,
			  struct nfp_eth_table_port *copy)
{
	struct nfp_eth_table_port *eth_port;

	eth_port = __nfp_port_get_eth_port(port);
	if (!eth_port)
		return -EINVAL;

	memcpy(copy, eth_port, sizeof(*eth_port));

	return 0;
}

static int
nfp_devlink_fill_eth_port_from_id(struct nfp_pf *pf, unsigned int port_index,
				  struct nfp_eth_table_port *copy)
{
	struct nfp_port *port;

	port = nfp_port_from_id(pf, NFP_PORT_PHYS_PORT, port_index);

	return nfp_devlink_fill_eth_port(port, copy);
}

static int
nfp_devlink_set_lanes(struct nfp_pf *pf, unsigned int idx, unsigned int lanes)
{
	struct nfp_nsp *nsp;
	int ret;

	nsp = nfp_eth_config_start(pf->cpp, idx);
	if (IS_ERR(nsp))
		return PTR_ERR(nsp);

	ret = __nfp_eth_set_split(nsp, lanes);
	if (ret) {
		nfp_eth_config_cleanup_end(nsp);
		return ret;
	}

	ret = nfp_eth_config_commit_end(nsp);
	if (ret < 0)
		return ret;
	if (ret) /* no change */
		return 0;

	return nfp_net_refresh_port_table_sync(pf);
}

static int
nfp_devlink_port_split(struct devlink *devlink, unsigned int port_index,
		       unsigned int count, struct netlink_ext_ack *extack)
{
	struct nfp_pf *pf = devlink_priv(devlink);
	struct nfp_eth_table_port eth_port;
	unsigned int lanes;
	int ret;

	if (count < 2)
		return -EINVAL;

	mutex_lock(&pf->lock);

	rtnl_lock();
	ret = nfp_devlink_fill_eth_port_from_id(pf, port_index, &eth_port);
	rtnl_unlock();
	if (ret)
		goto out;

	if (eth_port.is_split || eth_port.port_lanes % count) {
		ret = -EINVAL;
		goto out;
	}

	/* Special case the 100G CXP -> 2x40G split */
	lanes = eth_port.port_lanes / count;
	if (eth_port.lanes == 10 && count == 2)
		lanes = 8 / count;

	ret = nfp_devlink_set_lanes(pf, eth_port.index, lanes);
out:
	mutex_unlock(&pf->lock);

	return ret;
}

static int
nfp_devlink_port_unsplit(struct devlink *devlink, unsigned int port_index,
			 struct netlink_ext_ack *extack)
{
	struct nfp_pf *pf = devlink_priv(devlink);
	struct nfp_eth_table_port eth_port;
	unsigned int lanes;
	int ret;

	mutex_lock(&pf->lock);

	rtnl_lock();
	ret = nfp_devlink_fill_eth_port_from_id(pf, port_index, &eth_port);
	rtnl_unlock();
	if (ret)
		goto out;

	if (!eth_port.is_split) {
		ret = -EINVAL;
		goto out;
	}

	/* Special case the 100G CXP -> 2x40G unsplit */
	lanes = eth_port.port_lanes;
	if (eth_port.port_lanes == 8)
		lanes = 10;

	ret = nfp_devlink_set_lanes(pf, eth_port.index, lanes);
out:
	mutex_unlock(&pf->lock);

	return ret;
}

static int
nfp_devlink_sb_pool_get(struct devlink *devlink, unsigned int sb_index,
			u16 pool_index, struct devlink_sb_pool_info *pool_info)
{
	struct nfp_pf *pf = devlink_priv(devlink);

	return nfp_shared_buf_pool_get(pf, sb_index, pool_index, pool_info);
}

static int
nfp_devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
			u16 pool_index,
			u32 size, enum devlink_sb_threshold_type threshold_type)
{
	struct nfp_pf *pf = devlink_priv(devlink);

	return nfp_shared_buf_pool_set(pf, sb_index, pool_index,
				       size, threshold_type);
}

static int nfp_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
{
	struct nfp_pf *pf = devlink_priv(devlink);

	return nfp_app_eswitch_mode_get(pf->app, mode);
}

static int nfp_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
					struct netlink_ext_ack *extack)
{
	struct nfp_pf *pf = devlink_priv(devlink);
	int ret;

	mutex_lock(&pf->lock);
	ret = nfp_app_eswitch_mode_set(pf->app, mode);
	mutex_unlock(&pf->lock);

	return ret;
}

static const struct nfp_devlink_versions_simple {
	const char *key;
	const char *hwinfo;
} nfp_devlink_versions_hwinfo[] = {
	{ DEVLINK_INFO_VERSION_GENERIC_BOARD_ID,	"assembly.partno", },
	{ DEVLINK_INFO_VERSION_GENERIC_BOARD_REV,	"assembly.revision", },
	{ DEVLINK_INFO_VERSION_GENERIC_BOARD_MANUFACTURE, "assembly.vendor", },
	{ "board.model", /* code name */		"assembly.model", },
};

static int
nfp_devlink_versions_get_hwinfo(struct nfp_pf *pf, struct devlink_info_req *req)
{
	unsigned int i;
	int err;

	for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_hwinfo); i++) {
		const struct nfp_devlink_versions_simple *info;
		const char *val;

		info = &nfp_devlink_versions_hwinfo[i];

		val = nfp_hwinfo_lookup(pf->hwinfo, info->hwinfo);
		if (!val)
			continue;

		err = devlink_info_version_fixed_put(req, info->key, val);
		if (err)
			return err;
	}

	return 0;
}

static const struct nfp_devlink_versions {
	enum nfp_nsp_versions id;
	const char *key;
} nfp_devlink_versions_nsp[] = {
	{ NFP_VERSIONS_BUNDLE,	"fw.bundle_id", },
	{ NFP_VERSIONS_BSP,	DEVLINK_INFO_VERSION_GENERIC_FW_MGMT, },
	{ NFP_VERSIONS_CPLD,	"fw.cpld", },
	{ NFP_VERSIONS_APP,	DEVLINK_INFO_VERSION_GENERIC_FW_APP, },
	{ NFP_VERSIONS_UNDI,	DEVLINK_INFO_VERSION_GENERIC_FW_UNDI, },
	{ NFP_VERSIONS_NCSI,	DEVLINK_INFO_VERSION_GENERIC_FW_NCSI, },
	{ NFP_VERSIONS_CFGR,	"chip.init", },
};

static int
nfp_devlink_versions_get_nsp(struct devlink_info_req *req, bool flash,
			     const u8 *buf, unsigned int size)
{
	unsigned int i;
	int err;

	for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_nsp); i++) {
		const struct nfp_devlink_versions *info;
		const char *version;

		info = &nfp_devlink_versions_nsp[i];

		version = nfp_nsp_versions_get(info->id, flash, buf, size);
		if (IS_ERR(version)) {
			if (PTR_ERR(version) == -ENOENT)
				continue;
			else
				return PTR_ERR(version);
		}

		if (flash)
			err = devlink_info_version_stored_put(req, info->key,
							      version);
		else
			err = devlink_info_version_running_put(req, info->key,
							       version);
		if (err)
			return err;
	}

	return 0;
}

static int
nfp_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
		     struct netlink_ext_ack *extack)
{
	struct nfp_pf *pf = devlink_priv(devlink);
	const char *sn, *vendor, *part;
	struct nfp_nsp *nsp;
	char *buf = NULL;
	int err;

	err = devlink_info_driver_name_put(req, "nfp");
	if (err)
		return err;

	vendor = nfp_hwinfo_lookup(pf->hwinfo, "assembly.vendor");
	part = nfp_hwinfo_lookup(pf->hwinfo, "assembly.partno");
	sn = nfp_hwinfo_lookup(pf->hwinfo, "assembly.serial");
	if (vendor && part && sn) {
		char *buf;

		buf = kmalloc(strlen(vendor) + strlen(part) + strlen(sn) + 1,
			      GFP_KERNEL);
		if (!buf)
			return -ENOMEM;

		buf[0] = '\0';
		strcat(buf, vendor);
		strcat(buf, part);
		strcat(buf, sn);

		err = devlink_info_serial_number_put(req, buf);
		kfree(buf);
		if (err)
			return err;
	}

	nsp = nfp_nsp_open(pf->cpp);
	if (IS_ERR(nsp)) {
		NL_SET_ERR_MSG_MOD(extack, "can't access NSP");
		return PTR_ERR(nsp);
	}

	if (nfp_nsp_has_versions(nsp)) {
		buf = kzalloc(NFP_NSP_VERSION_BUFSZ, GFP_KERNEL);
		if (!buf) {
			err = -ENOMEM;
			goto err_close_nsp;
		}

		err = nfp_nsp_versions(nsp, buf, NFP_NSP_VERSION_BUFSZ);
		if (err)
			goto err_free_buf;

		err = nfp_devlink_versions_get_nsp(req, false,
						   buf, NFP_NSP_VERSION_BUFSZ);
		if (err)
			goto err_free_buf;

		err = nfp_devlink_versions_get_nsp(req, true,
						   buf, NFP_NSP_VERSION_BUFSZ);
		if (err)
			goto err_free_buf;

		kfree(buf);
	}

	nfp_nsp_close(nsp);

	return nfp_devlink_versions_get_hwinfo(pf, req);

err_free_buf:
	kfree(buf);
err_close_nsp:
	nfp_nsp_close(nsp);
	return err;
}

static int
nfp_devlink_flash_update(struct devlink *devlink, const char *path,
			 const char *component, struct netlink_ext_ack *extack)
{
	if (component)
		return -EOPNOTSUPP;
	return nfp_flash_update_common(devlink_priv(devlink), path, extack);
}

const struct devlink_ops nfp_devlink_ops = {
	.port_split		= nfp_devlink_port_split,
	.port_unsplit		= nfp_devlink_port_unsplit,
	.sb_pool_get		= nfp_devlink_sb_pool_get,
	.sb_pool_set		= nfp_devlink_sb_pool_set,
	.eswitch_mode_get	= nfp_devlink_eswitch_mode_get,
	.eswitch_mode_set	= nfp_devlink_eswitch_mode_set,
	.info_get		= nfp_devlink_info_get,
	.flash_update		= nfp_devlink_flash_update,
};

int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port)
{
	struct nfp_eth_table_port eth_port;
	struct devlink *devlink;
	int ret;

	rtnl_lock();
	ret = nfp_devlink_fill_eth_port(port, &eth_port);
	rtnl_unlock();
	if (ret)
		return ret;

	devlink_port_type_eth_set(&port->dl_port, port->netdev);
	devlink_port_attrs_set(&port->dl_port, DEVLINK_PORT_FLAVOUR_PHYSICAL,
			       eth_port.label_port, eth_port.is_split,
			       eth_port.label_subport);

	devlink = priv_to_devlink(app->pf);

	return devlink_port_register(devlink, &port->dl_port, port->eth_id);
}

void nfp_devlink_port_unregister(struct nfp_port *port)
{
	devlink_port_unregister(&port->dl_port);
}

struct devlink *nfp_devlink_get_devlink(struct net_device *netdev)
{
	struct nfp_app *app;

	app = nfp_app_from_netdev(netdev);
	if (!app)
		return NULL;

	return priv_to_devlink(app->pf);
}