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76bcb31e AB |
1 | /* |
2 | * Copyright (C) 2013-2014 Chelsio Communications. All rights reserved. | |
3 | * | |
4 | * Written by Anish Bhatt (anish@chelsio.com) | |
5 | * Casey Leedom (leedom@chelsio.com) | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms and conditions of the GNU General Public License, | |
9 | * version 2, as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | * The full GNU General Public License is included in this distribution in | |
17 | * the file called "COPYING". | |
18 | * | |
19 | */ | |
20 | ||
21 | #include "cxgb4.h" | |
22 | ||
10b00466 AB |
23 | /* DCBx version control |
24 | */ | |
4a95b6d0 | 25 | static const char * const dcb_ver_array[] = { |
10b00466 AB |
26 | "Unknown", |
27 | "DCBx-CIN", | |
28 | "DCBx-CEE 1.01", | |
29 | "DCBx-IEEE", | |
30 | "", "", "", | |
31 | "Auto Negotiated" | |
32 | }; | |
33 | ||
a85c2eb3 AB |
34 | static inline bool cxgb4_dcb_state_synced(enum cxgb4_dcb_state state) |
35 | { | |
36 | if (state == CXGB4_DCB_STATE_FW_ALLSYNCED || | |
37 | state == CXGB4_DCB_STATE_HOST) | |
38 | return true; | |
39 | else | |
40 | return false; | |
41 | } | |
42 | ||
76bcb31e AB |
43 | /* Initialize a port's Data Center Bridging state. Typically used after a |
44 | * Link Down event. | |
45 | */ | |
46 | void cxgb4_dcb_state_init(struct net_device *dev) | |
47 | { | |
48 | struct port_info *pi = netdev2pinfo(dev); | |
49 | struct port_dcb_info *dcb = &pi->dcb; | |
10b00466 | 50 | int version_temp = dcb->dcb_version; |
76bcb31e AB |
51 | |
52 | memset(dcb, 0, sizeof(struct port_dcb_info)); | |
53 | dcb->state = CXGB4_DCB_STATE_START; | |
10b00466 AB |
54 | if (version_temp) |
55 | dcb->dcb_version = version_temp; | |
56 | ||
57 | netdev_dbg(dev, "%s: Initializing DCB state for port[%d]\n", | |
58 | __func__, pi->port_id); | |
59 | } | |
60 | ||
61 | void cxgb4_dcb_version_init(struct net_device *dev) | |
62 | { | |
63 | struct port_info *pi = netdev2pinfo(dev); | |
64 | struct port_dcb_info *dcb = &pi->dcb; | |
65 | ||
66 | /* Any writes here are only done on kernels that exlicitly need | |
67 | * a specific version, say < 2.6.38 which only support CEE | |
68 | */ | |
69 | dcb->dcb_version = FW_PORT_DCB_VER_AUTO; | |
76bcb31e AB |
70 | } |
71 | ||
2376c879 AB |
72 | static void cxgb4_dcb_cleanup_apps(struct net_device *dev) |
73 | { | |
74 | struct port_info *pi = netdev2pinfo(dev); | |
75 | struct adapter *adap = pi->adapter; | |
76 | struct port_dcb_info *dcb = &pi->dcb; | |
77 | struct dcb_app app; | |
78 | int i, err; | |
79 | ||
80 | /* zero priority implies remove */ | |
81 | app.priority = 0; | |
82 | ||
83 | for (i = 0; i < CXGB4_MAX_DCBX_APP_SUPPORTED; i++) { | |
84 | /* Check if app list is exhausted */ | |
85 | if (!dcb->app_priority[i].protocolid) | |
86 | break; | |
87 | ||
88 | app.protocol = dcb->app_priority[i].protocolid; | |
89 | ||
90 | if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) { | |
a815286b | 91 | app.priority = dcb->app_priority[i].user_prio_map; |
2376c879 | 92 | app.selector = dcb->app_priority[i].sel_field + 1; |
a815286b | 93 | err = dcb_ieee_delapp(dev, &app); |
2376c879 AB |
94 | } else { |
95 | app.selector = !!(dcb->app_priority[i].sel_field); | |
96 | err = dcb_setapp(dev, &app); | |
97 | } | |
98 | ||
99 | if (err) { | |
100 | dev_err(adap->pdev_dev, | |
101 | "Failed DCB Clear %s Application Priority: sel=%d, prot=%d, , err=%d\n", | |
102 | dcb_ver_array[dcb->dcb_version], app.selector, | |
103 | app.protocol, -err); | |
104 | break; | |
105 | } | |
106 | } | |
107 | } | |
108 | ||
76bcb31e AB |
109 | /* Finite State machine for Data Center Bridging. |
110 | */ | |
111 | void cxgb4_dcb_state_fsm(struct net_device *dev, | |
10b00466 | 112 | enum cxgb4_dcb_state_input transition_to) |
76bcb31e AB |
113 | { |
114 | struct port_info *pi = netdev2pinfo(dev); | |
115 | struct port_dcb_info *dcb = &pi->dcb; | |
116 | struct adapter *adap = pi->adapter; | |
10b00466 AB |
117 | enum cxgb4_dcb_state current_state = dcb->state; |
118 | ||
119 | netdev_dbg(dev, "%s: State change from %d to %d for %s\n", | |
120 | __func__, dcb->state, transition_to, dev->name); | |
76bcb31e | 121 | |
10b00466 AB |
122 | switch (current_state) { |
123 | case CXGB4_DCB_STATE_START: { | |
124 | switch (transition_to) { | |
125 | case CXGB4_DCB_INPUT_FW_DISABLED: { | |
76bcb31e AB |
126 | /* we're going to use Host DCB */ |
127 | dcb->state = CXGB4_DCB_STATE_HOST; | |
128 | dcb->supported = CXGB4_DCBX_HOST_SUPPORT; | |
76bcb31e AB |
129 | break; |
130 | } | |
131 | ||
10b00466 AB |
132 | case CXGB4_DCB_INPUT_FW_ENABLED: { |
133 | /* we're going to use Firmware DCB */ | |
134 | dcb->state = CXGB4_DCB_STATE_FW_INCOMPLETE; | |
ee7bc3cd AB |
135 | dcb->supported = DCB_CAP_DCBX_LLD_MANAGED; |
136 | if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) | |
137 | dcb->supported |= DCB_CAP_DCBX_VER_IEEE; | |
138 | else | |
139 | dcb->supported |= DCB_CAP_DCBX_VER_CEE; | |
10b00466 AB |
140 | break; |
141 | } | |
142 | ||
143 | case CXGB4_DCB_INPUT_FW_INCOMPLETE: { | |
144 | /* expected transition */ | |
145 | break; | |
146 | } | |
147 | ||
148 | case CXGB4_DCB_INPUT_FW_ALLSYNCED: { | |
149 | dcb->state = CXGB4_DCB_STATE_FW_ALLSYNCED; | |
76bcb31e AB |
150 | break; |
151 | } | |
152 | ||
153 | default: | |
10b00466 | 154 | goto bad_state_input; |
76bcb31e AB |
155 | } |
156 | break; | |
157 | } | |
158 | ||
10b00466 AB |
159 | case CXGB4_DCB_STATE_FW_INCOMPLETE: { |
160 | switch (transition_to) { | |
161 | case CXGB4_DCB_INPUT_FW_ENABLED: { | |
162 | /* we're alreaady in firmware DCB mode */ | |
76bcb31e AB |
163 | break; |
164 | } | |
165 | ||
10b00466 AB |
166 | case CXGB4_DCB_INPUT_FW_INCOMPLETE: { |
167 | /* we're already incomplete */ | |
168 | break; | |
169 | } | |
170 | ||
171 | case CXGB4_DCB_INPUT_FW_ALLSYNCED: { | |
172 | dcb->state = CXGB4_DCB_STATE_FW_ALLSYNCED; | |
173 | dcb->enabled = 1; | |
174 | linkwatch_fire_event(dev); | |
76bcb31e AB |
175 | break; |
176 | } | |
177 | ||
178 | default: | |
10b00466 | 179 | goto bad_state_input; |
76bcb31e AB |
180 | } |
181 | break; | |
182 | } | |
183 | ||
10b00466 AB |
184 | case CXGB4_DCB_STATE_FW_ALLSYNCED: { |
185 | switch (transition_to) { | |
186 | case CXGB4_DCB_INPUT_FW_ENABLED: { | |
187 | /* we're alreaady in firmware DCB mode */ | |
76bcb31e AB |
188 | break; |
189 | } | |
190 | ||
10b00466 | 191 | case CXGB4_DCB_INPUT_FW_INCOMPLETE: { |
76bcb31e AB |
192 | /* We were successfully running with firmware DCB but |
193 | * now it's telling us that it's in an "incomplete | |
194 | * state. We need to reset back to a ground state | |
195 | * of incomplete. | |
196 | */ | |
2376c879 | 197 | cxgb4_dcb_cleanup_apps(dev); |
76bcb31e AB |
198 | cxgb4_dcb_state_init(dev); |
199 | dcb->state = CXGB4_DCB_STATE_FW_INCOMPLETE; | |
200 | dcb->supported = CXGB4_DCBX_FW_SUPPORT; | |
201 | linkwatch_fire_event(dev); | |
202 | break; | |
203 | } | |
204 | ||
10b00466 AB |
205 | case CXGB4_DCB_INPUT_FW_ALLSYNCED: { |
206 | /* we're already all sync'ed | |
207 | * this is only applicable for IEEE or | |
208 | * when another VI already completed negotiaton | |
209 | */ | |
76bcb31e AB |
210 | dcb->enabled = 1; |
211 | linkwatch_fire_event(dev); | |
212 | break; | |
213 | } | |
214 | ||
10b00466 AB |
215 | default: |
216 | goto bad_state_input; | |
217 | } | |
218 | break; | |
219 | } | |
220 | ||
221 | case CXGB4_DCB_STATE_HOST: { | |
222 | switch (transition_to) { | |
223 | case CXGB4_DCB_INPUT_FW_DISABLED: { | |
224 | /* we're alreaady in Host DCB mode */ | |
76bcb31e AB |
225 | break; |
226 | } | |
227 | ||
228 | default: | |
10b00466 | 229 | goto bad_state_input; |
76bcb31e AB |
230 | } |
231 | break; | |
232 | } | |
233 | ||
234 | default: | |
10b00466 | 235 | goto bad_state_transition; |
76bcb31e AB |
236 | } |
237 | return; | |
238 | ||
239 | bad_state_input: | |
240 | dev_err(adap->pdev_dev, "cxgb4_dcb_state_fsm: illegal input symbol %d\n", | |
10b00466 | 241 | transition_to); |
76bcb31e AB |
242 | return; |
243 | ||
244 | bad_state_transition: | |
245 | dev_err(adap->pdev_dev, "cxgb4_dcb_state_fsm: bad state transition, state = %d, input = %d\n", | |
10b00466 | 246 | current_state, transition_to); |
76bcb31e AB |
247 | } |
248 | ||
249 | /* Handle a DCB/DCBX update message from the firmware. | |
250 | */ | |
251 | void cxgb4_dcb_handle_fw_update(struct adapter *adap, | |
252 | const struct fw_port_cmd *pcmd) | |
253 | { | |
254 | const union fw_port_dcb *fwdcb = &pcmd->u.dcb; | |
2b5fb1f2 | 255 | int port = FW_PORT_CMD_PORTID_G(be32_to_cpu(pcmd->op_to_portid)); |
134491fd | 256 | struct net_device *dev = adap->port[adap->chan_map[port]]; |
76bcb31e AB |
257 | struct port_info *pi = netdev_priv(dev); |
258 | struct port_dcb_info *dcb = &pi->dcb; | |
259 | int dcb_type = pcmd->u.dcb.pgid.type; | |
10b00466 | 260 | int dcb_running_version; |
76bcb31e AB |
261 | |
262 | /* Handle Firmware DCB Control messages separately since they drive | |
263 | * our state machine. | |
264 | */ | |
265 | if (dcb_type == FW_PORT_DCB_TYPE_CONTROL) { | |
266 | enum cxgb4_dcb_state_input input = | |
267 | ((pcmd->u.dcb.control.all_syncd_pkd & | |
2b5fb1f2 | 268 | FW_PORT_CMD_ALL_SYNCD_F) |
76bcb31e AB |
269 | ? CXGB4_DCB_STATE_FW_ALLSYNCED |
270 | : CXGB4_DCB_STATE_FW_INCOMPLETE); | |
271 | ||
10b00466 | 272 | if (dcb->dcb_version != FW_PORT_DCB_VER_UNKNOWN) { |
2b5fb1f2 | 273 | dcb_running_version = FW_PORT_CMD_DCB_VERSION_G( |
10b00466 AB |
274 | be16_to_cpu( |
275 | pcmd->u.dcb.control.dcb_version_to_app_state)); | |
276 | if (dcb_running_version == FW_PORT_DCB_VER_CEE1D01 || | |
277 | dcb_running_version == FW_PORT_DCB_VER_IEEE) { | |
278 | dcb->dcb_version = dcb_running_version; | |
279 | dev_warn(adap->pdev_dev, "Interface %s is running %s\n", | |
280 | dev->name, | |
281 | dcb_ver_array[dcb->dcb_version]); | |
282 | } else { | |
283 | dev_warn(adap->pdev_dev, | |
284 | "Something screwed up, requested firmware for %s, but firmware returned %s instead\n", | |
285 | dcb_ver_array[dcb->dcb_version], | |
286 | dcb_ver_array[dcb_running_version]); | |
287 | dcb->dcb_version = FW_PORT_DCB_VER_UNKNOWN; | |
288 | } | |
289 | } | |
290 | ||
76bcb31e AB |
291 | cxgb4_dcb_state_fsm(dev, input); |
292 | return; | |
293 | } | |
294 | ||
295 | /* It's weird, and almost certainly an error, to get Firmware DCB | |
296 | * messages when we either haven't been told whether we're going to be | |
297 | * doing Host or Firmware DCB; and even worse when we've been told | |
298 | * that we're doing Host DCB! | |
299 | */ | |
300 | if (dcb->state == CXGB4_DCB_STATE_START || | |
301 | dcb->state == CXGB4_DCB_STATE_HOST) { | |
302 | dev_err(adap->pdev_dev, "Receiving Firmware DCB messages in State %d\n", | |
303 | dcb->state); | |
304 | return; | |
305 | } | |
306 | ||
307 | /* Now handle the general Firmware DCB update messages ... | |
308 | */ | |
309 | switch (dcb_type) { | |
310 | case FW_PORT_DCB_TYPE_PGID: | |
311 | dcb->pgid = be32_to_cpu(fwdcb->pgid.pgid); | |
312 | dcb->msgs |= CXGB4_DCB_FW_PGID; | |
313 | break; | |
314 | ||
315 | case FW_PORT_DCB_TYPE_PGRATE: | |
316 | dcb->pg_num_tcs_supported = fwdcb->pgrate.num_tcs_supported; | |
317 | memcpy(dcb->pgrate, &fwdcb->pgrate.pgrate, | |
318 | sizeof(dcb->pgrate)); | |
10b00466 AB |
319 | memcpy(dcb->tsa, &fwdcb->pgrate.tsa, |
320 | sizeof(dcb->tsa)); | |
76bcb31e | 321 | dcb->msgs |= CXGB4_DCB_FW_PGRATE; |
10b00466 AB |
322 | if (dcb->msgs & CXGB4_DCB_FW_PGID) |
323 | IEEE_FAUX_SYNC(dev, dcb); | |
76bcb31e AB |
324 | break; |
325 | ||
326 | case FW_PORT_DCB_TYPE_PRIORATE: | |
327 | memcpy(dcb->priorate, &fwdcb->priorate.strict_priorate, | |
328 | sizeof(dcb->priorate)); | |
329 | dcb->msgs |= CXGB4_DCB_FW_PRIORATE; | |
330 | break; | |
331 | ||
332 | case FW_PORT_DCB_TYPE_PFC: | |
333 | dcb->pfcen = fwdcb->pfc.pfcen; | |
334 | dcb->pfc_num_tcs_supported = fwdcb->pfc.max_pfc_tcs; | |
335 | dcb->msgs |= CXGB4_DCB_FW_PFC; | |
10b00466 | 336 | IEEE_FAUX_SYNC(dev, dcb); |
76bcb31e AB |
337 | break; |
338 | ||
339 | case FW_PORT_DCB_TYPE_APP_ID: { | |
340 | const struct fw_port_app_priority *fwap = &fwdcb->app_priority; | |
341 | int idx = fwap->idx; | |
342 | struct app_priority *ap = &dcb->app_priority[idx]; | |
343 | ||
344 | struct dcb_app app = { | |
76bcb31e | 345 | .protocol = be16_to_cpu(fwap->protocolid), |
76bcb31e AB |
346 | }; |
347 | int err; | |
348 | ||
10b00466 AB |
349 | /* Convert from firmware format to relevant format |
350 | * when using app selector | |
351 | */ | |
352 | if (dcb->dcb_version == FW_PORT_DCB_VER_IEEE) { | |
353 | app.selector = (fwap->sel_field + 1); | |
354 | app.priority = ffs(fwap->user_prio_map) - 1; | |
355 | err = dcb_ieee_setapp(dev, &app); | |
356 | IEEE_FAUX_SYNC(dev, dcb); | |
357 | } else { | |
358 | /* Default is CEE */ | |
359 | app.selector = !!(fwap->sel_field); | |
360 | app.priority = fwap->user_prio_map; | |
361 | err = dcb_setapp(dev, &app); | |
362 | } | |
363 | ||
76bcb31e AB |
364 | if (err) |
365 | dev_err(adap->pdev_dev, | |
366 | "Failed DCB Set Application Priority: sel=%d, prot=%d, prio=%d, err=%d\n", | |
367 | app.selector, app.protocol, app.priority, -err); | |
368 | ||
369 | ap->user_prio_map = fwap->user_prio_map; | |
370 | ap->sel_field = fwap->sel_field; | |
371 | ap->protocolid = be16_to_cpu(fwap->protocolid); | |
372 | dcb->msgs |= CXGB4_DCB_FW_APP_ID; | |
373 | break; | |
374 | } | |
375 | ||
376 | default: | |
377 | dev_err(adap->pdev_dev, "Unknown DCB update type received %x\n", | |
378 | dcb_type); | |
379 | break; | |
380 | } | |
381 | } | |
382 | ||
383 | /* Data Center Bridging netlink operations. | |
384 | */ | |
385 | ||
386 | ||
387 | /* Get current DCB enabled/disabled state. | |
388 | */ | |
389 | static u8 cxgb4_getstate(struct net_device *dev) | |
390 | { | |
391 | struct port_info *pi = netdev2pinfo(dev); | |
392 | ||
393 | return pi->dcb.enabled; | |
394 | } | |
395 | ||
396 | /* Set DCB enabled/disabled. | |
397 | */ | |
398 | static u8 cxgb4_setstate(struct net_device *dev, u8 enabled) | |
399 | { | |
400 | struct port_info *pi = netdev2pinfo(dev); | |
401 | ||
3bb06261 AB |
402 | /* If DCBx is host-managed, dcb is enabled by outside lldp agents */ |
403 | if (pi->dcb.state == CXGB4_DCB_STATE_HOST) { | |
404 | pi->dcb.enabled = enabled; | |
405 | return 0; | |
406 | } | |
407 | ||
76bcb31e AB |
408 | /* Firmware doesn't provide any mechanism to control the DCB state. |
409 | */ | |
410 | if (enabled != (pi->dcb.state == CXGB4_DCB_STATE_FW_ALLSYNCED)) | |
411 | return 1; | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
416 | static void cxgb4_getpgtccfg(struct net_device *dev, int tc, | |
417 | u8 *prio_type, u8 *pgid, u8 *bw_per, | |
418 | u8 *up_tc_map, int local) | |
419 | { | |
420 | struct fw_port_cmd pcmd; | |
421 | struct port_info *pi = netdev2pinfo(dev); | |
422 | struct adapter *adap = pi->adapter; | |
423 | int err; | |
424 | ||
425 | *prio_type = *pgid = *bw_per = *up_tc_map = 0; | |
426 | ||
427 | if (local) | |
428 | INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id); | |
429 | else | |
430 | INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id); | |
431 | ||
432 | pcmd.u.dcb.pgid.type = FW_PORT_DCB_TYPE_PGID; | |
433 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
434 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
435 | dev_err(adap->pdev_dev, "DCB read PGID failed with %d\n", -err); | |
436 | return; | |
437 | } | |
438 | *pgid = (be32_to_cpu(pcmd.u.dcb.pgid.pgid) >> (tc * 4)) & 0xf; | |
439 | ||
ba0c39cb AB |
440 | if (local) |
441 | INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id); | |
442 | else | |
443 | INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id); | |
76bcb31e AB |
444 | pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE; |
445 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
446 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
447 | dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n", | |
448 | -err); | |
449 | return; | |
450 | } | |
451 | ||
452 | *bw_per = pcmd.u.dcb.pgrate.pgrate[*pgid]; | |
453 | *up_tc_map = (1 << tc); | |
454 | ||
455 | /* prio_type is link strict */ | |
ee7bc3cd AB |
456 | if (*pgid != 0xF) |
457 | *prio_type = 0x2; | |
76bcb31e AB |
458 | } |
459 | ||
460 | static void cxgb4_getpgtccfg_tx(struct net_device *dev, int tc, | |
461 | u8 *prio_type, u8 *pgid, u8 *bw_per, | |
462 | u8 *up_tc_map) | |
463 | { | |
ee7bc3cd AB |
464 | /* tc 0 is written at MSB position */ |
465 | return cxgb4_getpgtccfg(dev, (7 - tc), prio_type, pgid, bw_per, | |
466 | up_tc_map, 1); | |
76bcb31e AB |
467 | } |
468 | ||
469 | ||
470 | static void cxgb4_getpgtccfg_rx(struct net_device *dev, int tc, | |
471 | u8 *prio_type, u8 *pgid, u8 *bw_per, | |
472 | u8 *up_tc_map) | |
473 | { | |
ee7bc3cd AB |
474 | /* tc 0 is written at MSB position */ |
475 | return cxgb4_getpgtccfg(dev, (7 - tc), prio_type, pgid, bw_per, | |
476 | up_tc_map, 0); | |
76bcb31e AB |
477 | } |
478 | ||
479 | static void cxgb4_setpgtccfg_tx(struct net_device *dev, int tc, | |
480 | u8 prio_type, u8 pgid, u8 bw_per, | |
481 | u8 up_tc_map) | |
482 | { | |
483 | struct fw_port_cmd pcmd; | |
484 | struct port_info *pi = netdev2pinfo(dev); | |
485 | struct adapter *adap = pi->adapter; | |
ee7bc3cd | 486 | int fw_tc = 7 - tc; |
76bcb31e AB |
487 | u32 _pgid; |
488 | int err; | |
489 | ||
490 | if (pgid == DCB_ATTR_VALUE_UNDEFINED) | |
491 | return; | |
492 | if (bw_per == DCB_ATTR_VALUE_UNDEFINED) | |
493 | return; | |
494 | ||
495 | INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id); | |
496 | pcmd.u.dcb.pgid.type = FW_PORT_DCB_TYPE_PGID; | |
497 | ||
498 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
499 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
500 | dev_err(adap->pdev_dev, "DCB read PGID failed with %d\n", -err); | |
501 | return; | |
502 | } | |
503 | ||
504 | _pgid = be32_to_cpu(pcmd.u.dcb.pgid.pgid); | |
ee7bc3cd AB |
505 | _pgid &= ~(0xF << (fw_tc * 4)); |
506 | _pgid |= pgid << (fw_tc * 4); | |
76bcb31e AB |
507 | pcmd.u.dcb.pgid.pgid = cpu_to_be32(_pgid); |
508 | ||
509 | INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id); | |
510 | ||
511 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
512 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
513 | dev_err(adap->pdev_dev, "DCB write PGID failed with %d\n", | |
514 | -err); | |
515 | return; | |
516 | } | |
517 | ||
518 | memset(&pcmd, 0, sizeof(struct fw_port_cmd)); | |
519 | ||
520 | INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id); | |
521 | pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE; | |
522 | ||
523 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
524 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
525 | dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n", | |
526 | -err); | |
527 | return; | |
528 | } | |
529 | ||
530 | pcmd.u.dcb.pgrate.pgrate[pgid] = bw_per; | |
531 | ||
532 | INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id); | |
533 | if (pi->dcb.state == CXGB4_DCB_STATE_HOST) | |
2b5fb1f2 | 534 | pcmd.op_to_portid |= cpu_to_be32(FW_PORT_CMD_APPLY_F); |
76bcb31e AB |
535 | |
536 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
537 | if (err != FW_PORT_DCB_CFG_SUCCESS) | |
538 | dev_err(adap->pdev_dev, "DCB write PGRATE failed with %d\n", | |
539 | -err); | |
540 | } | |
541 | ||
542 | static void cxgb4_getpgbwgcfg(struct net_device *dev, int pgid, u8 *bw_per, | |
543 | int local) | |
544 | { | |
545 | struct fw_port_cmd pcmd; | |
546 | struct port_info *pi = netdev2pinfo(dev); | |
547 | struct adapter *adap = pi->adapter; | |
548 | int err; | |
549 | ||
550 | if (local) | |
551 | INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id); | |
552 | else | |
553 | INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id); | |
554 | ||
555 | pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE; | |
556 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
557 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
558 | dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n", | |
559 | -err); | |
10b00466 | 560 | return; |
76bcb31e | 561 | } |
10b00466 AB |
562 | |
563 | *bw_per = pcmd.u.dcb.pgrate.pgrate[pgid]; | |
76bcb31e AB |
564 | } |
565 | ||
566 | static void cxgb4_getpgbwgcfg_tx(struct net_device *dev, int pgid, u8 *bw_per) | |
567 | { | |
568 | return cxgb4_getpgbwgcfg(dev, pgid, bw_per, 1); | |
569 | } | |
570 | ||
571 | static void cxgb4_getpgbwgcfg_rx(struct net_device *dev, int pgid, u8 *bw_per) | |
572 | { | |
573 | return cxgb4_getpgbwgcfg(dev, pgid, bw_per, 0); | |
574 | } | |
575 | ||
576 | static void cxgb4_setpgbwgcfg_tx(struct net_device *dev, int pgid, | |
577 | u8 bw_per) | |
578 | { | |
579 | struct fw_port_cmd pcmd; | |
580 | struct port_info *pi = netdev2pinfo(dev); | |
581 | struct adapter *adap = pi->adapter; | |
582 | int err; | |
583 | ||
584 | INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id); | |
585 | pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE; | |
586 | ||
587 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
588 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
589 | dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n", | |
590 | -err); | |
591 | return; | |
592 | } | |
593 | ||
594 | pcmd.u.dcb.pgrate.pgrate[pgid] = bw_per; | |
595 | ||
596 | INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id); | |
597 | if (pi->dcb.state == CXGB4_DCB_STATE_HOST) | |
2b5fb1f2 | 598 | pcmd.op_to_portid |= cpu_to_be32(FW_PORT_CMD_APPLY_F); |
76bcb31e AB |
599 | |
600 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
601 | ||
602 | if (err != FW_PORT_DCB_CFG_SUCCESS) | |
603 | dev_err(adap->pdev_dev, "DCB write PGRATE failed with %d\n", | |
604 | -err); | |
605 | } | |
606 | ||
607 | /* Return whether the specified Traffic Class Priority has Priority Pause | |
608 | * Frames enabled. | |
609 | */ | |
610 | static void cxgb4_getpfccfg(struct net_device *dev, int priority, u8 *pfccfg) | |
611 | { | |
612 | struct port_info *pi = netdev2pinfo(dev); | |
613 | struct port_dcb_info *dcb = &pi->dcb; | |
614 | ||
a85c2eb3 | 615 | if (!cxgb4_dcb_state_synced(dcb->state) || |
76bcb31e AB |
616 | priority >= CXGB4_MAX_PRIORITY) |
617 | *pfccfg = 0; | |
618 | else | |
ee7bc3cd | 619 | *pfccfg = (pi->dcb.pfcen >> (7 - priority)) & 1; |
76bcb31e AB |
620 | } |
621 | ||
622 | /* Enable/disable Priority Pause Frames for the specified Traffic Class | |
623 | * Priority. | |
624 | */ | |
625 | static void cxgb4_setpfccfg(struct net_device *dev, int priority, u8 pfccfg) | |
626 | { | |
627 | struct fw_port_cmd pcmd; | |
628 | struct port_info *pi = netdev2pinfo(dev); | |
629 | struct adapter *adap = pi->adapter; | |
630 | int err; | |
631 | ||
a85c2eb3 | 632 | if (!cxgb4_dcb_state_synced(pi->dcb.state) || |
76bcb31e AB |
633 | priority >= CXGB4_MAX_PRIORITY) |
634 | return; | |
635 | ||
636 | INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id); | |
637 | if (pi->dcb.state == CXGB4_DCB_STATE_HOST) | |
2b5fb1f2 | 638 | pcmd.op_to_portid |= cpu_to_be32(FW_PORT_CMD_APPLY_F); |
76bcb31e AB |
639 | |
640 | pcmd.u.dcb.pfc.type = FW_PORT_DCB_TYPE_PFC; | |
5433ba36 | 641 | pcmd.u.dcb.pfc.pfcen = pi->dcb.pfcen; |
76bcb31e AB |
642 | |
643 | if (pfccfg) | |
ee7bc3cd | 644 | pcmd.u.dcb.pfc.pfcen |= (1 << (7 - priority)); |
76bcb31e | 645 | else |
ee7bc3cd | 646 | pcmd.u.dcb.pfc.pfcen &= (~(1 << (7 - priority))); |
76bcb31e AB |
647 | |
648 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
649 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
650 | dev_err(adap->pdev_dev, "DCB PFC write failed with %d\n", -err); | |
651 | return; | |
652 | } | |
653 | ||
5433ba36 | 654 | pi->dcb.pfcen = pcmd.u.dcb.pfc.pfcen; |
76bcb31e AB |
655 | } |
656 | ||
657 | static u8 cxgb4_setall(struct net_device *dev) | |
658 | { | |
659 | return 0; | |
660 | } | |
661 | ||
662 | /* Return DCB capabilities. | |
663 | */ | |
664 | static u8 cxgb4_getcap(struct net_device *dev, int cap_id, u8 *caps) | |
665 | { | |
666 | struct port_info *pi = netdev2pinfo(dev); | |
667 | ||
668 | switch (cap_id) { | |
669 | case DCB_CAP_ATTR_PG: | |
670 | case DCB_CAP_ATTR_PFC: | |
671 | *caps = true; | |
672 | break; | |
673 | ||
674 | case DCB_CAP_ATTR_PG_TCS: | |
675 | /* 8 priorities for PG represented by bitmap */ | |
676 | *caps = 0x80; | |
677 | break; | |
678 | ||
679 | case DCB_CAP_ATTR_PFC_TCS: | |
680 | /* 8 priorities for PFC represented by bitmap */ | |
681 | *caps = 0x80; | |
682 | break; | |
683 | ||
684 | case DCB_CAP_ATTR_GSP: | |
685 | *caps = true; | |
686 | break; | |
687 | ||
688 | case DCB_CAP_ATTR_UP2TC: | |
689 | case DCB_CAP_ATTR_BCN: | |
690 | *caps = false; | |
691 | break; | |
692 | ||
693 | case DCB_CAP_ATTR_DCBX: | |
694 | *caps = pi->dcb.supported; | |
695 | break; | |
696 | ||
697 | default: | |
698 | *caps = false; | |
699 | } | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
704 | /* Return the number of Traffic Classes for the indicated Traffic Class ID. | |
705 | */ | |
706 | static int cxgb4_getnumtcs(struct net_device *dev, int tcs_id, u8 *num) | |
707 | { | |
708 | struct port_info *pi = netdev2pinfo(dev); | |
709 | ||
710 | switch (tcs_id) { | |
711 | case DCB_NUMTCS_ATTR_PG: | |
712 | if (pi->dcb.msgs & CXGB4_DCB_FW_PGRATE) | |
713 | *num = pi->dcb.pg_num_tcs_supported; | |
714 | else | |
715 | *num = 0x8; | |
716 | break; | |
717 | ||
718 | case DCB_NUMTCS_ATTR_PFC: | |
719 | *num = 0x8; | |
720 | break; | |
721 | ||
722 | default: | |
723 | return -EINVAL; | |
724 | } | |
725 | ||
726 | return 0; | |
727 | } | |
728 | ||
729 | /* Set the number of Traffic Classes supported for the indicated Traffic Class | |
730 | * ID. | |
731 | */ | |
732 | static int cxgb4_setnumtcs(struct net_device *dev, int tcs_id, u8 num) | |
733 | { | |
734 | /* Setting the number of Traffic Classes isn't supported. | |
735 | */ | |
736 | return -ENOSYS; | |
737 | } | |
738 | ||
739 | /* Return whether Priority Flow Control is enabled. */ | |
740 | static u8 cxgb4_getpfcstate(struct net_device *dev) | |
741 | { | |
742 | struct port_info *pi = netdev2pinfo(dev); | |
743 | ||
a85c2eb3 | 744 | if (!cxgb4_dcb_state_synced(pi->dcb.state)) |
76bcb31e AB |
745 | return false; |
746 | ||
747 | return pi->dcb.pfcen != 0; | |
748 | } | |
749 | ||
750 | /* Enable/disable Priority Flow Control. */ | |
751 | static void cxgb4_setpfcstate(struct net_device *dev, u8 state) | |
752 | { | |
753 | /* We can't enable/disable Priority Flow Control but we also can't | |
754 | * return an error ... | |
755 | */ | |
756 | } | |
757 | ||
758 | /* Return the Application User Priority Map associated with the specified | |
759 | * Application ID. | |
760 | */ | |
761 | static int __cxgb4_getapp(struct net_device *dev, u8 app_idtype, u16 app_id, | |
762 | int peer) | |
763 | { | |
764 | struct port_info *pi = netdev2pinfo(dev); | |
765 | struct adapter *adap = pi->adapter; | |
766 | int i; | |
767 | ||
a85c2eb3 | 768 | if (!cxgb4_dcb_state_synced(pi->dcb.state)) |
76bcb31e AB |
769 | return 0; |
770 | ||
771 | for (i = 0; i < CXGB4_MAX_DCBX_APP_SUPPORTED; i++) { | |
772 | struct fw_port_cmd pcmd; | |
773 | int err; | |
774 | ||
775 | if (peer) | |
776 | INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id); | |
777 | else | |
778 | INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id); | |
779 | ||
780 | pcmd.u.dcb.app_priority.type = FW_PORT_DCB_TYPE_APP_ID; | |
781 | pcmd.u.dcb.app_priority.idx = i; | |
782 | ||
783 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
784 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
785 | dev_err(adap->pdev_dev, "DCB APP read failed with %d\n", | |
786 | -err); | |
787 | return err; | |
788 | } | |
789 | if (be16_to_cpu(pcmd.u.dcb.app_priority.protocolid) == app_id) | |
10b00466 AB |
790 | if (pcmd.u.dcb.app_priority.sel_field == app_idtype) |
791 | return pcmd.u.dcb.app_priority.user_prio_map; | |
76bcb31e AB |
792 | |
793 | /* exhausted app list */ | |
794 | if (!pcmd.u.dcb.app_priority.protocolid) | |
795 | break; | |
796 | } | |
797 | ||
798 | return -EEXIST; | |
799 | } | |
800 | ||
801 | /* Return the Application User Priority Map associated with the specified | |
c2659479 | 802 | * Application ID. |
76bcb31e | 803 | */ |
c2659479 | 804 | static int cxgb4_getapp(struct net_device *dev, u8 app_idtype, u16 app_id) |
76bcb31e | 805 | { |
a44e7b73 AB |
806 | /* Convert app_idtype to firmware format before querying */ |
807 | return __cxgb4_getapp(dev, app_idtype == DCB_APP_IDTYPE_ETHTYPE ? | |
808 | app_idtype : 3, app_id, 0); | |
76bcb31e AB |
809 | } |
810 | ||
c2659479 | 811 | /* Write a new Application User Priority Map for the specified Application ID |
76bcb31e | 812 | */ |
10b00466 AB |
813 | static int __cxgb4_setapp(struct net_device *dev, u8 app_idtype, u16 app_id, |
814 | u8 app_prio) | |
76bcb31e AB |
815 | { |
816 | struct fw_port_cmd pcmd; | |
817 | struct port_info *pi = netdev2pinfo(dev); | |
818 | struct adapter *adap = pi->adapter; | |
819 | int i, err; | |
820 | ||
821 | ||
a85c2eb3 | 822 | if (!cxgb4_dcb_state_synced(pi->dcb.state)) |
76bcb31e AB |
823 | return -EINVAL; |
824 | ||
825 | /* DCB info gets thrown away on link up */ | |
826 | if (!netif_carrier_ok(dev)) | |
827 | return -ENOLINK; | |
828 | ||
76bcb31e AB |
829 | for (i = 0; i < CXGB4_MAX_DCBX_APP_SUPPORTED; i++) { |
830 | INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id); | |
831 | pcmd.u.dcb.app_priority.type = FW_PORT_DCB_TYPE_APP_ID; | |
832 | pcmd.u.dcb.app_priority.idx = i; | |
833 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
834 | ||
835 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
836 | dev_err(adap->pdev_dev, "DCB app table read failed with %d\n", | |
837 | -err); | |
838 | return err; | |
839 | } | |
840 | if (be16_to_cpu(pcmd.u.dcb.app_priority.protocolid) == app_id) { | |
841 | /* overwrite existing app table */ | |
842 | pcmd.u.dcb.app_priority.protocolid = 0; | |
843 | break; | |
844 | } | |
845 | /* find first empty slot */ | |
846 | if (!pcmd.u.dcb.app_priority.protocolid) | |
847 | break; | |
848 | } | |
849 | ||
850 | if (i == CXGB4_MAX_DCBX_APP_SUPPORTED) { | |
851 | /* no empty slots available */ | |
852 | dev_err(adap->pdev_dev, "DCB app table full\n"); | |
853 | return -EBUSY; | |
854 | } | |
855 | ||
856 | /* write out new app table entry */ | |
857 | INIT_PORT_DCB_WRITE_CMD(pcmd, pi->port_id); | |
858 | if (pi->dcb.state == CXGB4_DCB_STATE_HOST) | |
2b5fb1f2 | 859 | pcmd.op_to_portid |= cpu_to_be32(FW_PORT_CMD_APPLY_F); |
76bcb31e AB |
860 | |
861 | pcmd.u.dcb.app_priority.type = FW_PORT_DCB_TYPE_APP_ID; | |
862 | pcmd.u.dcb.app_priority.protocolid = cpu_to_be16(app_id); | |
863 | pcmd.u.dcb.app_priority.sel_field = app_idtype; | |
864 | pcmd.u.dcb.app_priority.user_prio_map = app_prio; | |
865 | pcmd.u.dcb.app_priority.idx = i; | |
866 | ||
867 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
868 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
869 | dev_err(adap->pdev_dev, "DCB app table write failed with %d\n", | |
870 | -err); | |
871 | return err; | |
872 | } | |
873 | ||
874 | return 0; | |
875 | } | |
876 | ||
10b00466 AB |
877 | /* Priority for CEE inside dcb_app is bitmask, with 0 being an invalid value */ |
878 | static int cxgb4_setapp(struct net_device *dev, u8 app_idtype, u16 app_id, | |
879 | u8 app_prio) | |
880 | { | |
881 | int ret; | |
882 | struct dcb_app app = { | |
883 | .selector = app_idtype, | |
884 | .protocol = app_id, | |
885 | .priority = app_prio, | |
886 | }; | |
887 | ||
888 | if (app_idtype != DCB_APP_IDTYPE_ETHTYPE && | |
889 | app_idtype != DCB_APP_IDTYPE_PORTNUM) | |
890 | return -EINVAL; | |
891 | ||
892 | /* Convert app_idtype to a format that firmware understands */ | |
893 | ret = __cxgb4_setapp(dev, app_idtype == DCB_APP_IDTYPE_ETHTYPE ? | |
894 | app_idtype : 3, app_id, app_prio); | |
895 | if (ret) | |
896 | return ret; | |
897 | ||
898 | return dcb_setapp(dev, &app); | |
899 | } | |
900 | ||
76bcb31e AB |
901 | /* Return whether IEEE Data Center Bridging has been negotiated. |
902 | */ | |
2376c879 AB |
903 | static inline int |
904 | cxgb4_ieee_negotiation_complete(struct net_device *dev, | |
905 | enum cxgb4_dcb_fw_msgs dcb_subtype) | |
76bcb31e AB |
906 | { |
907 | struct port_info *pi = netdev2pinfo(dev); | |
908 | struct port_dcb_info *dcb = &pi->dcb; | |
909 | ||
a85c2eb3 AB |
910 | if (dcb->state == CXGB4_DCB_STATE_FW_ALLSYNCED) |
911 | if (dcb_subtype && !(dcb->msgs & dcb_subtype)) | |
912 | return 0; | |
2376c879 | 913 | |
a85c2eb3 | 914 | return (cxgb4_dcb_state_synced(dcb->state) && |
76bcb31e AB |
915 | (dcb->supported & DCB_CAP_DCBX_VER_IEEE)); |
916 | } | |
917 | ||
ba0c39cb AB |
918 | static int cxgb4_ieee_read_ets(struct net_device *dev, struct ieee_ets *ets, |
919 | int local) | |
920 | { | |
921 | struct port_info *pi = netdev2pinfo(dev); | |
922 | struct port_dcb_info *dcb = &pi->dcb; | |
923 | struct adapter *adap = pi->adapter; | |
924 | uint32_t tc_info; | |
925 | struct fw_port_cmd pcmd; | |
926 | int i, bwg, err; | |
927 | ||
928 | if (!(dcb->msgs & (CXGB4_DCB_FW_PGID | CXGB4_DCB_FW_PGRATE))) | |
929 | return 0; | |
930 | ||
931 | ets->ets_cap = dcb->pg_num_tcs_supported; | |
932 | ||
933 | if (local) { | |
934 | ets->willing = 1; | |
935 | INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id); | |
936 | } else { | |
937 | INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id); | |
938 | } | |
939 | ||
940 | pcmd.u.dcb.pgid.type = FW_PORT_DCB_TYPE_PGID; | |
941 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
942 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
943 | dev_err(adap->pdev_dev, "DCB read PGID failed with %d\n", -err); | |
944 | return err; | |
945 | } | |
946 | ||
947 | tc_info = be32_to_cpu(pcmd.u.dcb.pgid.pgid); | |
948 | ||
949 | if (local) | |
950 | INIT_PORT_DCB_READ_LOCAL_CMD(pcmd, pi->port_id); | |
951 | else | |
952 | INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id); | |
953 | ||
954 | pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE; | |
955 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
956 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
957 | dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n", | |
958 | -err); | |
959 | return err; | |
960 | } | |
961 | ||
962 | for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { | |
963 | bwg = (tc_info >> ((7 - i) * 4)) & 0xF; | |
964 | ets->prio_tc[i] = bwg; | |
965 | ets->tc_tx_bw[i] = pcmd.u.dcb.pgrate.pgrate[i]; | |
966 | ets->tc_rx_bw[i] = ets->tc_tx_bw[i]; | |
967 | ets->tc_tsa[i] = pcmd.u.dcb.pgrate.tsa[i]; | |
968 | } | |
969 | ||
970 | return 0; | |
971 | } | |
972 | ||
973 | static int cxgb4_ieee_get_ets(struct net_device *dev, struct ieee_ets *ets) | |
974 | { | |
975 | return cxgb4_ieee_read_ets(dev, ets, 1); | |
976 | } | |
977 | ||
978 | /* We reuse this for peer PFC as well, as we can't have it enabled one way */ | |
979 | static int cxgb4_ieee_get_pfc(struct net_device *dev, struct ieee_pfc *pfc) | |
980 | { | |
981 | struct port_info *pi = netdev2pinfo(dev); | |
982 | struct port_dcb_info *dcb = &pi->dcb; | |
983 | ||
984 | memset(pfc, 0, sizeof(struct ieee_pfc)); | |
985 | ||
986 | if (!(dcb->msgs & CXGB4_DCB_FW_PFC)) | |
987 | return 0; | |
988 | ||
989 | pfc->pfc_cap = dcb->pfc_num_tcs_supported; | |
990 | pfc->pfc_en = bitswap_1(dcb->pfcen); | |
991 | ||
992 | return 0; | |
993 | } | |
994 | ||
995 | static int cxgb4_ieee_peer_ets(struct net_device *dev, struct ieee_ets *ets) | |
996 | { | |
997 | return cxgb4_ieee_read_ets(dev, ets, 0); | |
998 | } | |
999 | ||
76bcb31e AB |
1000 | /* Fill in the Application User Priority Map associated with the |
1001 | * specified Application. | |
10b00466 | 1002 | * Priority for IEEE dcb_app is an integer, with 0 being a valid value |
76bcb31e AB |
1003 | */ |
1004 | static int cxgb4_ieee_getapp(struct net_device *dev, struct dcb_app *app) | |
1005 | { | |
1006 | int prio; | |
1007 | ||
2376c879 | 1008 | if (!cxgb4_ieee_negotiation_complete(dev, CXGB4_DCB_FW_APP_ID)) |
76bcb31e AB |
1009 | return -EINVAL; |
1010 | if (!(app->selector && app->protocol)) | |
1011 | return -EINVAL; | |
1012 | ||
10b00466 AB |
1013 | /* Try querying firmware first, use firmware format */ |
1014 | prio = __cxgb4_getapp(dev, app->selector - 1, app->protocol, 0); | |
1015 | ||
1016 | if (prio < 0) | |
1017 | prio = dcb_ieee_getapp_mask(dev, app); | |
76bcb31e | 1018 | |
10b00466 | 1019 | app->priority = ffs(prio) - 1; |
76bcb31e AB |
1020 | return 0; |
1021 | } | |
1022 | ||
10b00466 AB |
1023 | /* Write a new Application User Priority Map for the specified Application ID. |
1024 | * Priority for IEEE dcb_app is an integer, with 0 being a valid value | |
1025 | */ | |
76bcb31e AB |
1026 | static int cxgb4_ieee_setapp(struct net_device *dev, struct dcb_app *app) |
1027 | { | |
10b00466 AB |
1028 | int ret; |
1029 | ||
2376c879 | 1030 | if (!cxgb4_ieee_negotiation_complete(dev, CXGB4_DCB_FW_APP_ID)) |
76bcb31e | 1031 | return -EINVAL; |
10b00466 AB |
1032 | if (!(app->selector && app->protocol)) |
1033 | return -EINVAL; | |
1034 | ||
1035 | if (!(app->selector > IEEE_8021QAZ_APP_SEL_ETHERTYPE && | |
1036 | app->selector < IEEE_8021QAZ_APP_SEL_ANY)) | |
76bcb31e AB |
1037 | return -EINVAL; |
1038 | ||
10b00466 AB |
1039 | /* change selector to a format that firmware understands */ |
1040 | ret = __cxgb4_setapp(dev, app->selector - 1, app->protocol, | |
1041 | (1 << app->priority)); | |
1042 | if (ret) | |
1043 | return ret; | |
1044 | ||
1045 | return dcb_ieee_setapp(dev, app); | |
76bcb31e AB |
1046 | } |
1047 | ||
1048 | /* Return our DCBX parameters. | |
1049 | */ | |
1050 | static u8 cxgb4_getdcbx(struct net_device *dev) | |
1051 | { | |
1052 | struct port_info *pi = netdev2pinfo(dev); | |
1053 | ||
1054 | /* This is already set by cxgb4_set_dcb_caps, so just return it */ | |
1055 | return pi->dcb.supported; | |
1056 | } | |
1057 | ||
1058 | /* Set our DCBX parameters. | |
1059 | */ | |
1060 | static u8 cxgb4_setdcbx(struct net_device *dev, u8 dcb_request) | |
1061 | { | |
1062 | struct port_info *pi = netdev2pinfo(dev); | |
1063 | ||
1064 | /* Filter out requests which exceed our capabilities. | |
1065 | */ | |
1066 | if ((dcb_request & (CXGB4_DCBX_FW_SUPPORT | CXGB4_DCBX_HOST_SUPPORT)) | |
1067 | != dcb_request) | |
1068 | return 1; | |
1069 | ||
10b00466 AB |
1070 | /* Can't enable DCB if we haven't successfully negotiated it. |
1071 | */ | |
a85c2eb3 | 1072 | if (!cxgb4_dcb_state_synced(pi->dcb.state)) |
76bcb31e AB |
1073 | return 1; |
1074 | ||
1075 | /* There's currently no mechanism to allow for the firmware DCBX | |
1076 | * negotiation to be changed from the Host Driver. If the caller | |
1077 | * requests exactly the same parameters that we already have then | |
1078 | * we'll allow them to be successfully "set" ... | |
1079 | */ | |
1080 | if (dcb_request != pi->dcb.supported) | |
1081 | return 1; | |
1082 | ||
1083 | pi->dcb.supported = dcb_request; | |
1084 | return 0; | |
1085 | } | |
1086 | ||
1087 | static int cxgb4_getpeer_app(struct net_device *dev, | |
1088 | struct dcb_peer_app_info *info, u16 *app_count) | |
1089 | { | |
1090 | struct fw_port_cmd pcmd; | |
1091 | struct port_info *pi = netdev2pinfo(dev); | |
1092 | struct adapter *adap = pi->adapter; | |
1093 | int i, err = 0; | |
1094 | ||
a85c2eb3 | 1095 | if (!cxgb4_dcb_state_synced(pi->dcb.state)) |
76bcb31e AB |
1096 | return 1; |
1097 | ||
1098 | info->willing = 0; | |
1099 | info->error = 0; | |
1100 | ||
1101 | *app_count = 0; | |
1102 | for (i = 0; i < CXGB4_MAX_DCBX_APP_SUPPORTED; i++) { | |
1103 | INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id); | |
1104 | pcmd.u.dcb.app_priority.type = FW_PORT_DCB_TYPE_APP_ID; | |
1105 | pcmd.u.dcb.app_priority.idx = *app_count; | |
1106 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
1107 | ||
1108 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
1109 | dev_err(adap->pdev_dev, "DCB app table read failed with %d\n", | |
1110 | -err); | |
1111 | return err; | |
1112 | } | |
1113 | ||
1114 | /* find first empty slot */ | |
1115 | if (!pcmd.u.dcb.app_priority.protocolid) | |
1116 | break; | |
1117 | } | |
1118 | *app_count = i; | |
1119 | return err; | |
1120 | } | |
1121 | ||
1122 | static int cxgb4_getpeerapp_tbl(struct net_device *dev, struct dcb_app *table) | |
1123 | { | |
1124 | struct fw_port_cmd pcmd; | |
1125 | struct port_info *pi = netdev2pinfo(dev); | |
1126 | struct adapter *adap = pi->adapter; | |
1127 | int i, err = 0; | |
1128 | ||
a85c2eb3 | 1129 | if (!cxgb4_dcb_state_synced(pi->dcb.state)) |
76bcb31e AB |
1130 | return 1; |
1131 | ||
1132 | for (i = 0; i < CXGB4_MAX_DCBX_APP_SUPPORTED; i++) { | |
1133 | INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id); | |
1134 | pcmd.u.dcb.app_priority.type = FW_PORT_DCB_TYPE_APP_ID; | |
1135 | pcmd.u.dcb.app_priority.idx = i; | |
1136 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
1137 | ||
1138 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
1139 | dev_err(adap->pdev_dev, "DCB app table read failed with %d\n", | |
1140 | -err); | |
1141 | return err; | |
1142 | } | |
1143 | ||
1144 | /* find first empty slot */ | |
1145 | if (!pcmd.u.dcb.app_priority.protocolid) | |
1146 | break; | |
1147 | ||
a44e7b73 | 1148 | table[i].selector = (pcmd.u.dcb.app_priority.sel_field + 1); |
76bcb31e AB |
1149 | table[i].protocol = |
1150 | be16_to_cpu(pcmd.u.dcb.app_priority.protocolid); | |
10b00466 AB |
1151 | table[i].priority = |
1152 | ffs(pcmd.u.dcb.app_priority.user_prio_map) - 1; | |
76bcb31e AB |
1153 | } |
1154 | return err; | |
1155 | } | |
1156 | ||
1157 | /* Return Priority Group information. | |
1158 | */ | |
1159 | static int cxgb4_cee_peer_getpg(struct net_device *dev, struct cee_pg *pg) | |
1160 | { | |
1161 | struct fw_port_cmd pcmd; | |
1162 | struct port_info *pi = netdev2pinfo(dev); | |
1163 | struct adapter *adap = pi->adapter; | |
1164 | u32 pgid; | |
1165 | int i, err; | |
1166 | ||
1167 | /* We're always "willing" -- the Switch Fabric always dictates the | |
1168 | * DCBX parameters to us. | |
1169 | */ | |
1170 | pg->willing = true; | |
1171 | ||
1172 | INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id); | |
1173 | pcmd.u.dcb.pgid.type = FW_PORT_DCB_TYPE_PGID; | |
1174 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
1175 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
1176 | dev_err(adap->pdev_dev, "DCB read PGID failed with %d\n", -err); | |
1177 | return err; | |
1178 | } | |
1179 | pgid = be32_to_cpu(pcmd.u.dcb.pgid.pgid); | |
1180 | ||
1181 | for (i = 0; i < CXGB4_MAX_PRIORITY; i++) | |
17544e2a | 1182 | pg->prio_pg[7 - i] = (pgid >> (i * 4)) & 0xF; |
76bcb31e AB |
1183 | |
1184 | INIT_PORT_DCB_READ_PEER_CMD(pcmd, pi->port_id); | |
1185 | pcmd.u.dcb.pgrate.type = FW_PORT_DCB_TYPE_PGRATE; | |
1186 | err = t4_wr_mbox(adap, adap->mbox, &pcmd, sizeof(pcmd), &pcmd); | |
1187 | if (err != FW_PORT_DCB_CFG_SUCCESS) { | |
1188 | dev_err(adap->pdev_dev, "DCB read PGRATE failed with %d\n", | |
1189 | -err); | |
1190 | return err; | |
1191 | } | |
1192 | ||
1193 | for (i = 0; i < CXGB4_MAX_PRIORITY; i++) | |
1194 | pg->pg_bw[i] = pcmd.u.dcb.pgrate.pgrate[i]; | |
1195 | ||
8d6541b7 AB |
1196 | pg->tcs_supported = pcmd.u.dcb.pgrate.num_tcs_supported; |
1197 | ||
76bcb31e AB |
1198 | return 0; |
1199 | } | |
1200 | ||
1201 | /* Return Priority Flow Control information. | |
1202 | */ | |
1203 | static int cxgb4_cee_peer_getpfc(struct net_device *dev, struct cee_pfc *pfc) | |
1204 | { | |
1205 | struct port_info *pi = netdev2pinfo(dev); | |
1206 | ||
1207 | cxgb4_getnumtcs(dev, DCB_NUMTCS_ATTR_PFC, &(pfc->tcs_supported)); | |
ba0c39cb AB |
1208 | |
1209 | /* Firmware sends this to us in a formwat that is a bit flipped version | |
1210 | * of spec, correct it before we send it to host. This is taken care of | |
1211 | * by bit shifting in other uses of pfcen | |
1212 | */ | |
1213 | pfc->pfc_en = bitswap_1(pi->dcb.pfcen); | |
76bcb31e | 1214 | |
8d6541b7 AB |
1215 | pfc->tcs_supported = pi->dcb.pfc_num_tcs_supported; |
1216 | ||
76bcb31e AB |
1217 | return 0; |
1218 | } | |
1219 | ||
1220 | const struct dcbnl_rtnl_ops cxgb4_dcb_ops = { | |
ba0c39cb AB |
1221 | .ieee_getets = cxgb4_ieee_get_ets, |
1222 | .ieee_getpfc = cxgb4_ieee_get_pfc, | |
76bcb31e AB |
1223 | .ieee_getapp = cxgb4_ieee_getapp, |
1224 | .ieee_setapp = cxgb4_ieee_setapp, | |
ba0c39cb AB |
1225 | .ieee_peer_getets = cxgb4_ieee_peer_ets, |
1226 | .ieee_peer_getpfc = cxgb4_ieee_get_pfc, | |
76bcb31e AB |
1227 | |
1228 | /* CEE std */ | |
1229 | .getstate = cxgb4_getstate, | |
1230 | .setstate = cxgb4_setstate, | |
1231 | .getpgtccfgtx = cxgb4_getpgtccfg_tx, | |
1232 | .getpgbwgcfgtx = cxgb4_getpgbwgcfg_tx, | |
1233 | .getpgtccfgrx = cxgb4_getpgtccfg_rx, | |
1234 | .getpgbwgcfgrx = cxgb4_getpgbwgcfg_rx, | |
1235 | .setpgtccfgtx = cxgb4_setpgtccfg_tx, | |
1236 | .setpgbwgcfgtx = cxgb4_setpgbwgcfg_tx, | |
1237 | .setpfccfg = cxgb4_setpfccfg, | |
1238 | .getpfccfg = cxgb4_getpfccfg, | |
1239 | .setall = cxgb4_setall, | |
1240 | .getcap = cxgb4_getcap, | |
1241 | .getnumtcs = cxgb4_getnumtcs, | |
1242 | .setnumtcs = cxgb4_setnumtcs, | |
1243 | .getpfcstate = cxgb4_getpfcstate, | |
1244 | .setpfcstate = cxgb4_setpfcstate, | |
1245 | .getapp = cxgb4_getapp, | |
1246 | .setapp = cxgb4_setapp, | |
1247 | ||
1248 | /* DCBX configuration */ | |
1249 | .getdcbx = cxgb4_getdcbx, | |
1250 | .setdcbx = cxgb4_setdcbx, | |
1251 | ||
1252 | /* peer apps */ | |
1253 | .peer_getappinfo = cxgb4_getpeer_app, | |
1254 | .peer_getapptable = cxgb4_getpeerapp_tbl, | |
1255 | ||
1256 | /* CEE peer */ | |
1257 | .cee_peer_getpg = cxgb4_cee_peer_getpg, | |
1258 | .cee_peer_getpfc = cxgb4_cee_peer_getpfc, | |
1259 | }; |