1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */
3
4 #include <linux/rtnetlink.h>
5 #include <net/devlink.h>
6
7 #include "nfpcore/nfp.h"
8 #include "nfpcore/nfp_nsp.h"
9 #include "nfp_app.h"
10 #include "nfp_main.h"
11 #include "nfp_port.h"
12
13 static int
nfp_devlink_fill_eth_port(struct nfp_port * port,struct nfp_eth_table_port * copy)14 nfp_devlink_fill_eth_port(struct nfp_port *port,
15 struct nfp_eth_table_port *copy)
16 {
17 struct nfp_eth_table_port *eth_port;
18
19 eth_port = __nfp_port_get_eth_port(port);
20 if (!eth_port)
21 return -EINVAL;
22
23 memcpy(copy, eth_port, sizeof(*eth_port));
24
25 return 0;
26 }
27
28 static int
nfp_devlink_fill_eth_port_from_id(struct nfp_pf * pf,struct devlink_port * dl_port,struct nfp_eth_table_port * copy)29 nfp_devlink_fill_eth_port_from_id(struct nfp_pf *pf,
30 struct devlink_port *dl_port,
31 struct nfp_eth_table_port *copy)
32 {
33 struct nfp_port *port = container_of(dl_port, struct nfp_port, dl_port);
34
35 return nfp_devlink_fill_eth_port(port, copy);
36 }
37
38 static int
nfp_devlink_set_lanes(struct nfp_pf * pf,unsigned int idx,unsigned int lanes)39 nfp_devlink_set_lanes(struct nfp_pf *pf, unsigned int idx, unsigned int lanes)
40 {
41 struct nfp_nsp *nsp;
42 int ret;
43
44 nsp = nfp_eth_config_start(pf->cpp, idx);
45 if (IS_ERR(nsp))
46 return PTR_ERR(nsp);
47
48 ret = __nfp_eth_set_split(nsp, lanes);
49 if (ret) {
50 nfp_eth_config_cleanup_end(nsp);
51 return ret;
52 }
53
54 ret = nfp_eth_config_commit_end(nsp);
55 if (ret < 0)
56 return ret;
57 if (ret) /* no change */
58 return 0;
59
60 return nfp_net_refresh_port_table_sync(pf);
61 }
62
63 static int
nfp_devlink_port_split(struct devlink * devlink,struct devlink_port * port,unsigned int count,struct netlink_ext_ack * extack)64 nfp_devlink_port_split(struct devlink *devlink, struct devlink_port *port,
65 unsigned int count, struct netlink_ext_ack *extack)
66 {
67 struct nfp_pf *pf = devlink_priv(devlink);
68 struct nfp_eth_table_port eth_port;
69 unsigned int lanes;
70 int ret;
71
72 rtnl_lock();
73 ret = nfp_devlink_fill_eth_port_from_id(pf, port, ð_port);
74 rtnl_unlock();
75 if (ret)
76 return ret;
77
78 if (eth_port.port_lanes % count)
79 return -EINVAL;
80
81 /* Special case the 100G CXP -> 2x40G split */
82 lanes = eth_port.port_lanes / count;
83 if (eth_port.lanes == 10 && count == 2)
84 lanes = 8 / count;
85
86 return nfp_devlink_set_lanes(pf, eth_port.index, lanes);
87 }
88
89 static int
nfp_devlink_port_unsplit(struct devlink * devlink,struct devlink_port * port,struct netlink_ext_ack * extack)90 nfp_devlink_port_unsplit(struct devlink *devlink, struct devlink_port *port,
91 struct netlink_ext_ack *extack)
92 {
93 struct nfp_pf *pf = devlink_priv(devlink);
94 struct nfp_eth_table_port eth_port;
95 unsigned int lanes;
96 int ret;
97
98 rtnl_lock();
99 ret = nfp_devlink_fill_eth_port_from_id(pf, port, ð_port);
100 rtnl_unlock();
101 if (ret)
102 return ret;
103
104 if (!eth_port.is_split)
105 return -EINVAL;
106
107 /* Special case the 100G CXP -> 2x40G unsplit */
108 lanes = eth_port.port_lanes;
109 if (eth_port.port_lanes == 8)
110 lanes = 10;
111
112 return nfp_devlink_set_lanes(pf, eth_port.index, lanes);
113 }
114
115 static int
nfp_devlink_sb_pool_get(struct devlink * devlink,unsigned int sb_index,u16 pool_index,struct devlink_sb_pool_info * pool_info)116 nfp_devlink_sb_pool_get(struct devlink *devlink, unsigned int sb_index,
117 u16 pool_index, struct devlink_sb_pool_info *pool_info)
118 {
119 struct nfp_pf *pf = devlink_priv(devlink);
120
121 return nfp_shared_buf_pool_get(pf, sb_index, pool_index, pool_info);
122 }
123
124 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 netlink_ext_ack * extack)125 nfp_devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
126 u16 pool_index,
127 u32 size, enum devlink_sb_threshold_type threshold_type,
128 struct netlink_ext_ack *extack)
129 {
130 struct nfp_pf *pf = devlink_priv(devlink);
131
132 return nfp_shared_buf_pool_set(pf, sb_index, pool_index,
133 size, threshold_type);
134 }
135
nfp_devlink_eswitch_mode_get(struct devlink * devlink,u16 * mode)136 static int nfp_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
137 {
138 struct nfp_pf *pf = devlink_priv(devlink);
139
140 return nfp_app_eswitch_mode_get(pf->app, mode);
141 }
142
nfp_devlink_eswitch_mode_set(struct devlink * devlink,u16 mode,struct netlink_ext_ack * extack)143 static int nfp_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
144 struct netlink_ext_ack *extack)
145 {
146 struct nfp_pf *pf = devlink_priv(devlink);
147
148 return nfp_app_eswitch_mode_set(pf->app, mode);
149 }
150
151 static const struct nfp_devlink_versions_simple {
152 const char *key;
153 const char *hwinfo;
154 } nfp_devlink_versions_hwinfo[] = {
155 { DEVLINK_INFO_VERSION_GENERIC_BOARD_ID, "assembly.partno", },
156 { DEVLINK_INFO_VERSION_GENERIC_BOARD_REV, "assembly.revision", },
157 { DEVLINK_INFO_VERSION_GENERIC_BOARD_MANUFACTURE, "assembly.vendor", },
158 { "board.model", /* code name */ "assembly.model", },
159 };
160
161 static int
nfp_devlink_versions_get_hwinfo(struct nfp_pf * pf,struct devlink_info_req * req)162 nfp_devlink_versions_get_hwinfo(struct nfp_pf *pf, struct devlink_info_req *req)
163 {
164 unsigned int i;
165 int err;
166
167 for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_hwinfo); i++) {
168 const struct nfp_devlink_versions_simple *info;
169 const char *val;
170
171 info = &nfp_devlink_versions_hwinfo[i];
172
173 val = nfp_hwinfo_lookup(pf->hwinfo, info->hwinfo);
174 if (!val)
175 continue;
176
177 err = devlink_info_version_fixed_put(req, info->key, val);
178 if (err)
179 return err;
180 }
181
182 return 0;
183 }
184
185 static const struct nfp_devlink_versions {
186 enum nfp_nsp_versions id;
187 const char *key;
188 } nfp_devlink_versions_nsp[] = {
189 { NFP_VERSIONS_BUNDLE, DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID, },
190 { NFP_VERSIONS_BSP, DEVLINK_INFO_VERSION_GENERIC_FW_MGMT, },
191 { NFP_VERSIONS_CPLD, "fw.cpld", },
192 { NFP_VERSIONS_APP, DEVLINK_INFO_VERSION_GENERIC_FW_APP, },
193 { NFP_VERSIONS_UNDI, DEVLINK_INFO_VERSION_GENERIC_FW_UNDI, },
194 { NFP_VERSIONS_NCSI, DEVLINK_INFO_VERSION_GENERIC_FW_NCSI, },
195 { NFP_VERSIONS_CFGR, "chip.init", },
196 };
197
198 static int
nfp_devlink_versions_get_nsp(struct devlink_info_req * req,bool flash,const u8 * buf,unsigned int size)199 nfp_devlink_versions_get_nsp(struct devlink_info_req *req, bool flash,
200 const u8 *buf, unsigned int size)
201 {
202 unsigned int i;
203 int err;
204
205 for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_nsp); i++) {
206 const struct nfp_devlink_versions *info;
207 const char *version;
208
209 info = &nfp_devlink_versions_nsp[i];
210
211 version = nfp_nsp_versions_get(info->id, flash, buf, size);
212 if (IS_ERR(version)) {
213 if (PTR_ERR(version) == -ENOENT)
214 continue;
215 else
216 return PTR_ERR(version);
217 }
218
219 if (flash)
220 err = devlink_info_version_stored_put(req, info->key,
221 version);
222 else
223 err = devlink_info_version_running_put(req, info->key,
224 version);
225 if (err)
226 return err;
227 }
228
229 return 0;
230 }
231
232 static int
nfp_devlink_info_get(struct devlink * devlink,struct devlink_info_req * req,struct netlink_ext_ack * extack)233 nfp_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
234 struct netlink_ext_ack *extack)
235 {
236 struct nfp_pf *pf = devlink_priv(devlink);
237 const char *sn, *vendor, *part;
238 struct nfp_nsp *nsp;
239 char *buf = NULL;
240 int err;
241
242 err = devlink_info_driver_name_put(req, "nfp");
243 if (err)
244 return err;
245
246 vendor = nfp_hwinfo_lookup(pf->hwinfo, "assembly.vendor");
247 part = nfp_hwinfo_lookup(pf->hwinfo, "assembly.partno");
248 sn = nfp_hwinfo_lookup(pf->hwinfo, "assembly.serial");
249 if (vendor && part && sn) {
250 char *buf;
251
252 buf = kmalloc(strlen(vendor) + strlen(part) + strlen(sn) + 1,
253 GFP_KERNEL);
254 if (!buf)
255 return -ENOMEM;
256
257 buf[0] = '\0';
258 strcat(buf, vendor);
259 strcat(buf, part);
260 strcat(buf, sn);
261
262 err = devlink_info_serial_number_put(req, buf);
263 kfree(buf);
264 if (err)
265 return err;
266 }
267
268 nsp = nfp_nsp_open(pf->cpp);
269 if (IS_ERR(nsp)) {
270 NL_SET_ERR_MSG_MOD(extack, "can't access NSP");
271 return PTR_ERR(nsp);
272 }
273
274 if (nfp_nsp_has_versions(nsp)) {
275 buf = kzalloc(NFP_NSP_VERSION_BUFSZ, GFP_KERNEL);
276 if (!buf) {
277 err = -ENOMEM;
278 goto err_close_nsp;
279 }
280
281 err = nfp_nsp_versions(nsp, buf, NFP_NSP_VERSION_BUFSZ);
282 if (err)
283 goto err_free_buf;
284
285 err = nfp_devlink_versions_get_nsp(req, false,
286 buf, NFP_NSP_VERSION_BUFSZ);
287 if (err)
288 goto err_free_buf;
289
290 err = nfp_devlink_versions_get_nsp(req, true,
291 buf, NFP_NSP_VERSION_BUFSZ);
292 if (err)
293 goto err_free_buf;
294
295 kfree(buf);
296 }
297
298 nfp_nsp_close(nsp);
299
300 return nfp_devlink_versions_get_hwinfo(pf, req);
301
302 err_free_buf:
303 kfree(buf);
304 err_close_nsp:
305 nfp_nsp_close(nsp);
306 return err;
307 }
308
309 static int
nfp_devlink_flash_update(struct devlink * devlink,struct devlink_flash_update_params * params,struct netlink_ext_ack * extack)310 nfp_devlink_flash_update(struct devlink *devlink,
311 struct devlink_flash_update_params *params,
312 struct netlink_ext_ack *extack)
313 {
314 return nfp_flash_update_common(devlink_priv(devlink), params->fw, extack);
315 }
316
317 const struct devlink_ops nfp_devlink_ops = {
318 .port_split = nfp_devlink_port_split,
319 .port_unsplit = nfp_devlink_port_unsplit,
320 .sb_pool_get = nfp_devlink_sb_pool_get,
321 .sb_pool_set = nfp_devlink_sb_pool_set,
322 .eswitch_mode_get = nfp_devlink_eswitch_mode_get,
323 .eswitch_mode_set = nfp_devlink_eswitch_mode_set,
324 .info_get = nfp_devlink_info_get,
325 .flash_update = nfp_devlink_flash_update,
326 };
327
nfp_devlink_port_register(struct nfp_app * app,struct nfp_port * port)328 int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port)
329 {
330 struct devlink_port_attrs attrs = {};
331 struct nfp_eth_table_port eth_port;
332 struct devlink *devlink;
333 const u8 *serial;
334 int serial_len;
335 int ret;
336
337 rtnl_lock();
338 ret = nfp_devlink_fill_eth_port(port, ð_port);
339 rtnl_unlock();
340 if (ret)
341 return ret;
342
343 attrs.split = eth_port.is_split;
344 attrs.splittable = !attrs.split;
345 attrs.lanes = eth_port.port_lanes;
346 attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
347 attrs.phys.port_number = eth_port.label_port;
348 attrs.phys.split_subport_number = eth_port.label_subport;
349 serial_len = nfp_cpp_serial(port->app->cpp, &serial);
350 memcpy(attrs.switch_id.id, serial, serial_len);
351 attrs.switch_id.id_len = serial_len;
352 devlink_port_attrs_set(&port->dl_port, &attrs);
353
354 devlink = priv_to_devlink(app->pf);
355
356 return devl_port_register(devlink, &port->dl_port, port->eth_id);
357 }
358
nfp_devlink_port_unregister(struct nfp_port * port)359 void nfp_devlink_port_unregister(struct nfp_port *port)
360 {
361 devl_port_unregister(&port->dl_port);
362 }
363
nfp_devlink_port_type_eth_set(struct nfp_port * port)364 void nfp_devlink_port_type_eth_set(struct nfp_port *port)
365 {
366 devlink_port_type_eth_set(&port->dl_port, port->netdev);
367 }
368
nfp_devlink_port_type_clear(struct nfp_port * port)369 void nfp_devlink_port_type_clear(struct nfp_port *port)
370 {
371 devlink_port_type_clear(&port->dl_port);
372 }
373
nfp_devlink_get_devlink_port(struct net_device * netdev)374 struct devlink_port *nfp_devlink_get_devlink_port(struct net_device *netdev)
375 {
376 struct nfp_port *port;
377
378 port = nfp_port_from_netdev(netdev);
379 if (!port)
380 return NULL;
381
382 return &port->dl_port;
383 }
384