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 vendor = nfp_hwinfo_lookup(pf->hwinfo, "assembly.vendor");
243 part = nfp_hwinfo_lookup(pf->hwinfo, "assembly.partno");
244 sn = nfp_hwinfo_lookup(pf->hwinfo, "assembly.serial");
245 if (vendor && part && sn) {
246 char *buf;
247
248 buf = kmalloc(strlen(vendor) + strlen(part) + strlen(sn) + 1,
249 GFP_KERNEL);
250 if (!buf)
251 return -ENOMEM;
252
253 buf[0] = '\0';
254 strcat(buf, vendor);
255 strcat(buf, part);
256 strcat(buf, sn);
257
258 err = devlink_info_serial_number_put(req, buf);
259 kfree(buf);
260 if (err)
261 return err;
262 }
263
264 nsp = nfp_nsp_open(pf->cpp);
265 if (IS_ERR(nsp)) {
266 NL_SET_ERR_MSG_MOD(extack, "can't access NSP");
267 return PTR_ERR(nsp);
268 }
269
270 if (nfp_nsp_has_versions(nsp)) {
271 buf = kzalloc(NFP_NSP_VERSION_BUFSZ, GFP_KERNEL);
272 if (!buf) {
273 err = -ENOMEM;
274 goto err_close_nsp;
275 }
276
277 err = nfp_nsp_versions(nsp, buf, NFP_NSP_VERSION_BUFSZ);
278 if (err)
279 goto err_free_buf;
280
281 err = nfp_devlink_versions_get_nsp(req, false,
282 buf, NFP_NSP_VERSION_BUFSZ);
283 if (err)
284 goto err_free_buf;
285
286 err = nfp_devlink_versions_get_nsp(req, true,
287 buf, NFP_NSP_VERSION_BUFSZ);
288 if (err)
289 goto err_free_buf;
290
291 kfree(buf);
292 }
293
294 nfp_nsp_close(nsp);
295
296 return nfp_devlink_versions_get_hwinfo(pf, req);
297
298 err_free_buf:
299 kfree(buf);
300 err_close_nsp:
301 nfp_nsp_close(nsp);
302 return err;
303 }
304
305 static int
nfp_devlink_flash_update(struct devlink * devlink,struct devlink_flash_update_params * params,struct netlink_ext_ack * extack)306 nfp_devlink_flash_update(struct devlink *devlink,
307 struct devlink_flash_update_params *params,
308 struct netlink_ext_ack *extack)
309 {
310 return nfp_flash_update_common(devlink_priv(devlink), params->fw, extack);
311 }
312
313 const struct devlink_ops nfp_devlink_ops = {
314 .sb_pool_get = nfp_devlink_sb_pool_get,
315 .sb_pool_set = nfp_devlink_sb_pool_set,
316 .eswitch_mode_get = nfp_devlink_eswitch_mode_get,
317 .eswitch_mode_set = nfp_devlink_eswitch_mode_set,
318 .info_get = nfp_devlink_info_get,
319 .flash_update = nfp_devlink_flash_update,
320 };
321
322 static const struct devlink_port_ops nfp_devlink_port_ops = {
323 .port_split = nfp_devlink_port_split,
324 .port_unsplit = nfp_devlink_port_unsplit,
325 };
326
nfp_devlink_port_register(struct nfp_app * app,struct nfp_port * port)327 int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port)
328 {
329 struct devlink_port_attrs attrs = {};
330 struct nfp_eth_table_port eth_port;
331 struct devlink *devlink;
332 const u8 *serial;
333 int serial_len;
334 int ret;
335
336 SET_NETDEV_DEVLINK_PORT(port->netdev, &port->dl_port);
337
338 rtnl_lock();
339 ret = nfp_devlink_fill_eth_port(port, ð_port);
340 rtnl_unlock();
341 if (ret)
342 return ret;
343
344 attrs.split = eth_port.is_split;
345 attrs.splittable = eth_port.port_lanes > 1 && !attrs.split;
346 attrs.lanes = eth_port.port_lanes;
347 attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
348 attrs.phys.port_number = eth_port.label_port;
349 attrs.phys.split_subport_number = eth_port.label_subport;
350 serial_len = nfp_cpp_serial(port->app->cpp, &serial);
351 memcpy(attrs.switch_id.id, serial, serial_len);
352 attrs.switch_id.id_len = serial_len;
353 devlink_port_attrs_set(&port->dl_port, &attrs);
354
355 devlink = priv_to_devlink(app->pf);
356
357 return devl_port_register_with_ops(devlink, &port->dl_port,
358 port->eth_id, &nfp_devlink_port_ops);
359 }
360
nfp_devlink_port_unregister(struct nfp_port * port)361 void nfp_devlink_port_unregister(struct nfp_port *port)
362 {
363 devl_port_unregister(&port->dl_port);
364 }
365