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
13static int
14nfp_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
28static int
29nfp_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
38static int
39nfp_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
63static int
64nfp_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, &eth_port);
74	rtnl_unlock();
75	if (ret)
76		return ret;
77
78	if (eth_port.port_lanes % count) {
79		NL_SET_ERR_MSG_MOD(extack, "invalid count");
80		return -EINVAL;
81	}
82
83	/* Special case the 100G CXP -> 2x40G split */
84	lanes = eth_port.port_lanes / count;
85	if (eth_port.lanes == 10 && count == 2)
86		lanes = 8 / count;
87
88	return nfp_devlink_set_lanes(pf, eth_port.index, lanes);
89}
90
91static int
92nfp_devlink_port_unsplit(struct devlink *devlink, struct devlink_port *port,
93			 struct netlink_ext_ack *extack)
94{
95	struct nfp_pf *pf = devlink_priv(devlink);
96	struct nfp_eth_table_port eth_port;
97	unsigned int lanes;
98	int ret;
99
100	rtnl_lock();
101	ret = nfp_devlink_fill_eth_port_from_id(pf, port, &eth_port);
102	rtnl_unlock();
103	if (ret)
104		return ret;
105
106	if (!eth_port.is_split) {
107		NL_SET_ERR_MSG_MOD(extack, "port is not split");
108		return -EINVAL;
109	}
110
111	/* Special case the 100G CXP -> 2x40G unsplit */
112	lanes = eth_port.port_lanes;
113	if (eth_port.port_lanes == 8)
114		lanes = 10;
115
116	return nfp_devlink_set_lanes(pf, eth_port.index, lanes);
117}
118
119static int
120nfp_devlink_sb_pool_get(struct devlink *devlink, unsigned int sb_index,
121			u16 pool_index, struct devlink_sb_pool_info *pool_info)
122{
123	struct nfp_pf *pf = devlink_priv(devlink);
124
125	return nfp_shared_buf_pool_get(pf, sb_index, pool_index, pool_info);
126}
127
128static int
129nfp_devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
130			u16 pool_index,
131			u32 size, enum devlink_sb_threshold_type threshold_type,
132			struct netlink_ext_ack *extack)
133{
134	struct nfp_pf *pf = devlink_priv(devlink);
135
136	return nfp_shared_buf_pool_set(pf, sb_index, pool_index,
137				       size, threshold_type);
138}
139
140static int nfp_devlink_eswitch_mode_get(struct devlink *devlink, u16 *mode)
141{
142	struct nfp_pf *pf = devlink_priv(devlink);
143
144	return nfp_app_eswitch_mode_get(pf->app, mode);
145}
146
147static int nfp_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
148					struct netlink_ext_ack *extack)
149{
150	struct nfp_pf *pf = devlink_priv(devlink);
151
152	return nfp_app_eswitch_mode_set(pf->app, mode);
153}
154
155static const struct nfp_devlink_versions_simple {
156	const char *key;
157	const char *hwinfo;
158} nfp_devlink_versions_hwinfo[] = {
159	{ DEVLINK_INFO_VERSION_GENERIC_BOARD_ID,	"assembly.partno", },
160	{ DEVLINK_INFO_VERSION_GENERIC_BOARD_REV,	"assembly.revision", },
161	{ DEVLINK_INFO_VERSION_GENERIC_BOARD_MANUFACTURE, "assembly.vendor", },
162	{ "board.model", /* code name */		"assembly.model", },
163};
164
165static int
166nfp_devlink_versions_get_hwinfo(struct nfp_pf *pf, struct devlink_info_req *req)
167{
168	unsigned int i;
169	int err;
170
171	for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_hwinfo); i++) {
172		const struct nfp_devlink_versions_simple *info;
173		const char *val;
174
175		info = &nfp_devlink_versions_hwinfo[i];
176
177		val = nfp_hwinfo_lookup(pf->hwinfo, info->hwinfo);
178		if (!val)
179			continue;
180
181		err = devlink_info_version_fixed_put(req, info->key, val);
182		if (err)
183			return err;
184	}
185
186	return 0;
187}
188
189static const struct nfp_devlink_versions {
190	enum nfp_nsp_versions id;
191	const char *key;
192} nfp_devlink_versions_nsp[] = {
193	{ NFP_VERSIONS_BUNDLE,	DEVLINK_INFO_VERSION_GENERIC_FW_BUNDLE_ID, },
194	{ NFP_VERSIONS_BSP,	DEVLINK_INFO_VERSION_GENERIC_FW_MGMT, },
195	{ NFP_VERSIONS_CPLD,	"fw.cpld", },
196	{ NFP_VERSIONS_APP,	DEVLINK_INFO_VERSION_GENERIC_FW_APP, },
197	{ NFP_VERSIONS_UNDI,	DEVLINK_INFO_VERSION_GENERIC_FW_UNDI, },
198	{ NFP_VERSIONS_NCSI,	DEVLINK_INFO_VERSION_GENERIC_FW_NCSI, },
199	{ NFP_VERSIONS_CFGR,	"chip.init", },
200};
201
202static int
203nfp_devlink_versions_get_nsp(struct devlink_info_req *req, bool flash,
204			     const u8 *buf, unsigned int size)
205{
206	unsigned int i;
207	int err;
208
209	for (i = 0; i < ARRAY_SIZE(nfp_devlink_versions_nsp); i++) {
210		const struct nfp_devlink_versions *info;
211		const char *version;
212
213		info = &nfp_devlink_versions_nsp[i];
214
215		version = nfp_nsp_versions_get(info->id, flash, buf, size);
216		if (IS_ERR(version)) {
217			if (PTR_ERR(version) == -ENOENT)
218				continue;
219			else
220				return PTR_ERR(version);
221		}
222
223		if (flash)
224			err = devlink_info_version_stored_put(req, info->key,
225							      version);
226		else
227			err = devlink_info_version_running_put(req, info->key,
228							       version);
229		if (err)
230			return err;
231	}
232
233	return 0;
234}
235
236static int
237nfp_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
238		     struct netlink_ext_ack *extack)
239{
240	struct nfp_pf *pf = devlink_priv(devlink);
241	const char *sn, *vendor, *part;
242	struct nfp_nsp *nsp;
243	char *buf = NULL;
244	int 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
302err_free_buf:
303	kfree(buf);
304err_close_nsp:
305	nfp_nsp_close(nsp);
306	return err;
307}
308
309static int
310nfp_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
317const struct devlink_ops nfp_devlink_ops = {
318	.sb_pool_get		= nfp_devlink_sb_pool_get,
319	.sb_pool_set		= nfp_devlink_sb_pool_set,
320	.eswitch_mode_get	= nfp_devlink_eswitch_mode_get,
321	.eswitch_mode_set	= nfp_devlink_eswitch_mode_set,
322	.info_get		= nfp_devlink_info_get,
323	.flash_update		= nfp_devlink_flash_update,
324};
325
326static const struct devlink_port_ops nfp_devlink_port_ops = {
327	.port_split		= nfp_devlink_port_split,
328	.port_unsplit		= nfp_devlink_port_unsplit,
329};
330
331int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port)
332{
333	struct devlink_port_attrs attrs = {};
334	struct nfp_eth_table_port eth_port;
335	struct devlink *devlink;
336	const u8 *serial;
337	int serial_len;
338	int ret;
339
340	SET_NETDEV_DEVLINK_PORT(port->netdev, &port->dl_port);
341
342	rtnl_lock();
343	ret = nfp_devlink_fill_eth_port(port, &eth_port);
344	rtnl_unlock();
345	if (ret)
346		return ret;
347
348	attrs.split = eth_port.is_split;
349	attrs.splittable = eth_port.port_lanes > 1 && !attrs.split;
350	attrs.lanes = eth_port.port_lanes;
351	attrs.flavour = DEVLINK_PORT_FLAVOUR_PHYSICAL;
352	attrs.phys.port_number = eth_port.label_port;
353	attrs.phys.split_subport_number = eth_port.label_subport;
354	serial_len = nfp_cpp_serial(port->app->cpp, &serial);
355	memcpy(attrs.switch_id.id, serial, serial_len);
356	attrs.switch_id.id_len = serial_len;
357	devlink_port_attrs_set(&port->dl_port, &attrs);
358
359	devlink = priv_to_devlink(app->pf);
360
361	return devl_port_register_with_ops(devlink, &port->dl_port,
362					   port->eth_id, &nfp_devlink_port_ops);
363}
364
365void nfp_devlink_port_unregister(struct nfp_port *port)
366{
367	devl_port_unregister(&port->dl_port);
368}
369