xref: /illumos-gate/usr/src/uts/common/io/cxgbe/t4nex/t4_mac.c (revision 5f82aa32fbc5dc2c59bca6ff315f44a4c4c9ea86)
1 /*
2  * This file and its contents are supplied under the terms of the
3  * Common Development and Distribution License ("CDDL"), version 1.0.
4  * You may only use this file in accordance with the terms of version
5  * 1.0 of the CDDL.
6  *
7  * A full copy of the text of the CDDL should have accompanied this
8  * source. A copy of the CDDL is also available via the Internet at
9  * http://www.illumos.org/license/CDDL.
10  */
11 
12 /*
13  * This file is part of the Chelsio T4 support code.
14  *
15  * Copyright (C) 2010-2013 Chelsio Communications.  All rights reserved.
16  *
17  * This program is distributed in the hope that it will be useful, but WITHOUT
18  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19  * FITNESS FOR A PARTICULAR PURPOSE.  See the LICENSE file included in this
20  * release for licensing terms and conditions.
21  */
22 
23 #include <sys/ddi.h>
24 #include <sys/sunddi.h>
25 #include <sys/dlpi.h>
26 #include <sys/mac_provider.h>
27 #include <sys/mac_ether.h>
28 #include <sys/strsubr.h>
29 #include <sys/queue.h>
30 
31 #include "common/common.h"
32 #include "common/t4_regs.h"
33 
34 static int t4_mc_getstat(void *arg, uint_t stat, uint64_t *val);
35 static int t4_mc_start(void *arg);
36 static void t4_mc_stop(void *arg);
37 static int t4_mc_setpromisc(void *arg, boolean_t on);
38 static int t4_mc_multicst(void *arg, boolean_t add, const uint8_t *mcaddr);
39 static int t4_mc_unicst(void *arg, const uint8_t *ucaddr);
40 static boolean_t t4_mc_getcapab(void *arg, mac_capab_t cap, void *data);
41 static int t4_mc_setprop(void *arg, const char *name, mac_prop_id_t id,
42     uint_t size, const void *val);
43 static int t4_mc_getprop(void *arg, const char *name, mac_prop_id_t id,
44     uint_t size, void *val);
45 static void t4_mc_propinfo(void *arg, const char *name, mac_prop_id_t id,
46     mac_prop_info_handle_t ph);
47 
48 static int begin_synchronized_op(struct port_info *pi, int hold, int waitok);
49 static void end_synchronized_op(struct port_info *pi, int held);
50 static int t4_init_synchronized(struct port_info *pi);
51 static int t4_uninit_synchronized(struct port_info *pi);
52 static void propinfo(struct port_info *pi, const char *name,
53     mac_prop_info_handle_t ph);
54 static int getprop(struct port_info *pi, const char *name, uint_t size,
55     void *val);
56 static int setprop(struct port_info *pi, const char *name, const void *val);
57 
58 mac_callbacks_t t4_m_callbacks = {
59 	.mc_callbacks	= MC_GETCAPAB | MC_PROPERTIES,
60 	.mc_getstat	= t4_mc_getstat,
61 	.mc_start	= t4_mc_start,
62 	.mc_stop	= t4_mc_stop,
63 	.mc_setpromisc	= t4_mc_setpromisc,
64 	.mc_multicst	= t4_mc_multicst,
65 	.mc_unicst =    t4_mc_unicst,
66 	.mc_tx =        t4_mc_tx,
67 	.mc_getcapab =	t4_mc_getcapab,
68 	.mc_setprop =	t4_mc_setprop,
69 	.mc_getprop =	t4_mc_getprop,
70 	.mc_propinfo =	t4_mc_propinfo,
71 };
72 
73 /* I couldn't comeup with a better idea of not redefine
74  * another strcture and instead somehow reuse the earlier
75  * above structure and modify its members.
76  */
77 mac_callbacks_t t4_m_ring_callbacks = {
78 	.mc_callbacks =	MC_GETCAPAB | MC_PROPERTIES,
79 	.mc_getstat =	t4_mc_getstat,
80 	.mc_start =	t4_mc_start,
81 	.mc_stop =	t4_mc_stop,
82 	.mc_setpromisc =t4_mc_setpromisc,
83 	.mc_multicst =	t4_mc_multicst,
84 	.mc_unicst =    NULL, /* t4_addmac */
85 	.mc_tx =        NULL, /* t4_eth_tx */
86 	.mc_getcapab	= t4_mc_getcapab,
87 	.mc_setprop	= t4_mc_setprop,
88 	.mc_getprop	= t4_mc_getprop,
89 	.mc_propinfo	= t4_mc_propinfo,
90 };
91 
92 #define	T4PROP_TMR_IDX "_holdoff_timer_idx"
93 #define	T4PROP_PKTC_IDX "_holdoff_pktc_idx"
94 #define	T4PROP_MTU "_mtu"
95 #define	T4PROP_HW_CSUM	"_hw_csum"
96 #define	T4PROP_HW_LSO	"_hw_lso"
97 #define	T4PROP_TX_PAUSE	"_tx_pause"
98 #define	T4PROP_RX_PAUSE	"_rx_pause"
99 
100 char *t4_priv_props[] = {
101 	T4PROP_TMR_IDX,
102 	T4PROP_PKTC_IDX,
103 #if MAC_VERSION == 1
104 	/* MAC_VERSION 1 doesn't seem to use MAC_PROP_MTU, hmmmm */
105 	T4PROP_MTU,
106 #endif
107 	T4PROP_HW_CSUM,
108 	T4PROP_HW_LSO,
109 	T4PROP_TX_PAUSE,
110 	T4PROP_RX_PAUSE,
111 	NULL
112 };
113 
114 static int
115 t4_mc_getstat(void *arg, uint_t stat, uint64_t *val)
116 {
117 	struct port_info *pi = arg;
118 	struct adapter *sc = pi->adapter;
119 	struct link_config *lc = &pi->link_cfg;
120 
121 #define	GET_STAT(name) \
122 	t4_read_reg64(sc, PORT_REG(pi->tx_chan, A_MPS_PORT_STAT_##name##_L))
123 
124 	switch (stat) {
125 	case MAC_STAT_IFSPEED:
126 		if (lc->link_ok != 0) {
127 			*val = lc->speed;
128 			*val *= 1000000;
129 		} else
130 			*val = 0;
131 		break;
132 
133 	case MAC_STAT_MULTIRCV:
134 		*val = GET_STAT(RX_PORT_MCAST);
135 		break;
136 
137 	case MAC_STAT_BRDCSTRCV:
138 		*val = GET_STAT(RX_PORT_BCAST);
139 		break;
140 
141 	case MAC_STAT_MULTIXMT:
142 		*val = GET_STAT(TX_PORT_MCAST);
143 		break;
144 
145 	case MAC_STAT_BRDCSTXMT:
146 		*val = GET_STAT(TX_PORT_BCAST);
147 		break;
148 
149 	case MAC_STAT_NORCVBUF:
150 		*val = 0;	/* TODO should come from rxq->nomem */
151 		break;
152 
153 	case MAC_STAT_IERRORS:
154 		*val = GET_STAT(RX_PORT_MTU_ERROR) +
155 		    GET_STAT(RX_PORT_MTU_CRC_ERROR) +
156 		    GET_STAT(RX_PORT_CRC_ERROR) +
157 		    GET_STAT(RX_PORT_LEN_ERROR) +
158 		    GET_STAT(RX_PORT_SYM_ERROR) +
159 		    GET_STAT(RX_PORT_LESS_64B);
160 		break;
161 
162 	case MAC_STAT_UNKNOWNS:
163 		return (ENOTSUP);
164 
165 	case MAC_STAT_NOXMTBUF:
166 		*val = GET_STAT(TX_PORT_DROP);
167 		break;
168 
169 	case MAC_STAT_OERRORS:
170 		*val = GET_STAT(TX_PORT_ERROR);
171 		break;
172 
173 	case MAC_STAT_COLLISIONS:
174 		return (ENOTSUP);
175 
176 	case MAC_STAT_RBYTES:
177 		*val = GET_STAT(RX_PORT_BYTES);
178 		break;
179 
180 	case MAC_STAT_IPACKETS:
181 		*val = GET_STAT(RX_PORT_FRAMES);
182 		break;
183 
184 	case MAC_STAT_OBYTES:
185 		*val = GET_STAT(TX_PORT_BYTES);
186 		break;
187 
188 	case MAC_STAT_OPACKETS:
189 		*val = GET_STAT(TX_PORT_FRAMES);
190 		break;
191 
192 	case ETHER_STAT_ALIGN_ERRORS:
193 		return (ENOTSUP);
194 
195 	case ETHER_STAT_FCS_ERRORS:
196 		*val = GET_STAT(RX_PORT_CRC_ERROR);
197 		break;
198 
199 	case ETHER_STAT_FIRST_COLLISIONS:
200 	case ETHER_STAT_MULTI_COLLISIONS:
201 	case ETHER_STAT_SQE_ERRORS:
202 	case ETHER_STAT_DEFER_XMTS:
203 	case ETHER_STAT_TX_LATE_COLLISIONS:
204 	case ETHER_STAT_EX_COLLISIONS:
205 		return (ENOTSUP);
206 
207 	case ETHER_STAT_MACXMT_ERRORS:
208 		*val = GET_STAT(TX_PORT_ERROR);
209 		break;
210 
211 	case ETHER_STAT_CARRIER_ERRORS:
212 		return (ENOTSUP);
213 
214 	case ETHER_STAT_TOOLONG_ERRORS:
215 		*val = GET_STAT(RX_PORT_MTU_ERROR);
216 		break;
217 
218 	case ETHER_STAT_MACRCV_ERRORS:
219 		*val = GET_STAT(RX_PORT_MTU_ERROR) +
220 		    GET_STAT(RX_PORT_MTU_CRC_ERROR) +
221 		    GET_STAT(RX_PORT_CRC_ERROR) +
222 		    GET_STAT(RX_PORT_LEN_ERROR) +
223 		    GET_STAT(RX_PORT_SYM_ERROR) +
224 		    GET_STAT(RX_PORT_LESS_64B);
225 		break;
226 
227 	case ETHER_STAT_XCVR_ADDR:
228 	case ETHER_STAT_XCVR_ID:
229 	case ETHER_STAT_XCVR_INUSE:
230 		return (ENOTSUP);
231 
232 	case ETHER_STAT_CAP_100GFDX:
233 		*val = !!(lc->supported & FW_PORT_CAP_SPEED_100G);
234 		break;
235 
236 	case ETHER_STAT_CAP_40GFDX:
237 		*val = !!(lc->supported & FW_PORT_CAP_SPEED_40G);
238 		break;
239 
240 	case ETHER_STAT_CAP_25GFDX:
241 		*val = !!(lc->supported & FW_PORT_CAP_SPEED_25G);
242 		break;
243 
244 	case ETHER_STAT_CAP_10GFDX:
245 		*val = !!(lc->supported & FW_PORT_CAP_SPEED_10G);
246 		break;
247 
248 	case ETHER_STAT_CAP_1000FDX:
249 		*val = !!(lc->supported & FW_PORT_CAP_SPEED_1G);
250 		break;
251 
252 	case ETHER_STAT_CAP_1000HDX:
253 		return (ENOTSUP);
254 
255 	case ETHER_STAT_CAP_100FDX:
256 		*val = !!(lc->supported & FW_PORT_CAP_SPEED_100M);
257 		break;
258 
259 	case ETHER_STAT_CAP_100HDX:
260 		return (ENOTSUP);
261 
262 	case ETHER_STAT_CAP_10FDX:
263 	case ETHER_STAT_CAP_10HDX:
264 		return (ENOTSUP);
265 
266 	case ETHER_STAT_CAP_ASMPAUSE:
267 		*val = 0;
268 		break;
269 
270 	case ETHER_STAT_CAP_PAUSE:
271 		*val = 1;
272 		break;
273 
274 	case ETHER_STAT_CAP_AUTONEG:
275 		*val = !!(lc->supported & FW_PORT_CAP_ANEG);
276 		break;
277 
278 	/*
279 	 * We have set flow control configuration based on tx_pause and rx_pause
280 	 * values supported through ndd. Now, we need to translate the settings
281 	 * we have in link_config structure to adv_cap_asmpause and
282 	 * adv_cap_pause.
283 	 *
284 	 * There are 4 combinations possible and the translation is as below:
285 	 * tx_pause = 0 => We don't send pause frames during Rx congestion
286 	 * tx_pause = 1 => We send pause frames during Rx congestion
287 	 * rx_pause = 0 => We ignore received pause frames
288 	 * rx_pause = 1 => We pause transmission when we receive pause frames
289 	 *
290 	 * +----------------------------+----------------------------------+
291 	 * |  tx_pause	|    rx_pause	| adv_cap_asmpause | adv_cap_pause |
292 	 * +-------------------------+-------------------------------------+
293 	 * |	0	|	0	|	0	   |	0	   |
294 	 * |	0	|	1	|	1	   |	0	   |
295 	 * |	1	|	0	|	1	   |	1	   |
296 	 * |	1	|	1	|	0	   |	1	   |
297 	 * +----------------------------+----------------------------------+
298 	 */
299 
300 	/* Advertised asymmetric pause capability */
301 	case ETHER_STAT_ADV_CAP_ASMPAUSE:
302 		*val = (((lc->requested_fc & PAUSE_TX) ? 1 : 0) ^
303 		    (lc->requested_fc & PAUSE_RX));
304 		break;
305 
306 	/* Advertised pause capability */
307 	case ETHER_STAT_ADV_CAP_PAUSE:
308 		*val = (lc->requested_fc & PAUSE_TX) ? 1 : 0;
309 		break;
310 
311 	case ETHER_STAT_ADV_CAP_100GFDX:
312 		*val = !!(lc->advertising & FW_PORT_CAP_SPEED_100G);
313 		break;
314 
315 	case ETHER_STAT_ADV_CAP_40GFDX:
316 		*val = !!(lc->advertising & FW_PORT_CAP_SPEED_40G);
317 		break;
318 
319 	case ETHER_STAT_ADV_CAP_25GFDX:
320 		*val = !!(lc->advertising & FW_PORT_CAP_SPEED_25G);
321 		break;
322 
323 	case ETHER_STAT_ADV_CAP_10GFDX:
324 		*val = !!(lc->advertising & FW_PORT_CAP_SPEED_10G);
325 		break;
326 
327 	case ETHER_STAT_ADV_CAP_1000FDX:
328 		*val = !!(lc->advertising & FW_PORT_CAP_SPEED_1G);
329 		break;
330 
331 	case ETHER_STAT_ADV_CAP_AUTONEG:
332 		*val = !!(lc->advertising & FW_PORT_CAP_ANEG);
333 		break;
334 
335 	case ETHER_STAT_ADV_CAP_1000HDX:
336 	case ETHER_STAT_ADV_CAP_100FDX:
337 	case ETHER_STAT_ADV_CAP_100HDX:
338 	case ETHER_STAT_ADV_CAP_10FDX:
339 	case ETHER_STAT_ADV_CAP_10HDX:
340 		return (ENOTSUP);	/* TODO */
341 
342 
343 	case ETHER_STAT_LP_CAP_100GFDX:
344 		*val = !!(lc->lp_advertising & FW_PORT_CAP_SPEED_100G);
345 		break;
346 
347 	case ETHER_STAT_LP_CAP_40GFDX:
348 		*val = !!(lc->lp_advertising & FW_PORT_CAP_SPEED_40G);
349 		break;
350 
351 	case ETHER_STAT_LP_CAP_25GFDX:
352 		*val = !!(lc->lp_advertising & FW_PORT_CAP_SPEED_25G);
353 		break;
354 
355 	case ETHER_STAT_LP_CAP_10GFDX:
356 		*val = !!(lc->lp_advertising & FW_PORT_CAP_SPEED_10G);
357 		break;
358 
359 	case ETHER_STAT_LP_CAP_1000FDX:
360 		*val = !!(lc->lp_advertising & FW_PORT_CAP_SPEED_1G);
361 		break;
362 
363 	case ETHER_STAT_LP_CAP_AUTONEG:
364 		*val = !!(lc->lp_advertising & FW_PORT_CAP_ANEG);
365 		break;
366 
367 	case ETHER_STAT_LP_CAP_1000HDX:
368 	case ETHER_STAT_LP_CAP_100FDX:
369 	case ETHER_STAT_LP_CAP_100HDX:
370 	case ETHER_STAT_LP_CAP_10FDX:
371 	case ETHER_STAT_LP_CAP_10HDX:
372 	case ETHER_STAT_LP_CAP_ASMPAUSE:
373 	case ETHER_STAT_LP_CAP_PAUSE:
374 		return (ENOTSUP);
375 
376 	case ETHER_STAT_LINK_ASMPAUSE:
377 		*val = 0;
378 		break;
379 
380 	case ETHER_STAT_LINK_PAUSE:
381 		*val = 1;
382 		break;
383 
384 	case ETHER_STAT_LINK_AUTONEG:
385 		*val = lc->autoneg == AUTONEG_ENABLE;
386 		break;
387 
388 	case ETHER_STAT_LINK_DUPLEX:
389 		if (lc->link_ok != 0)
390 			*val = LINK_DUPLEX_FULL;
391 		else
392 			*val = LINK_DUPLEX_UNKNOWN;
393 		break;
394 
395 	default:
396 #ifdef DEBUG
397 		cxgb_printf(pi->dip, CE_NOTE, "stat %d not implemented.", stat);
398 #endif
399 		return (ENOTSUP);
400 	}
401 #undef GET_STAT
402 
403 	return (0);
404 }
405 
406 static int
407 t4_mc_start(void *arg)
408 {
409 	struct port_info *pi = arg;
410 	int rc;
411 
412 	rc = begin_synchronized_op(pi, 0, 1);
413 	if (rc != 0)
414 		return (rc);
415 	rc = t4_init_synchronized(pi);
416 	end_synchronized_op(pi, 0);
417 
418 	return (rc);
419 }
420 
421 static void
422 t4_mc_stop(void *arg)
423 {
424 	struct port_info *pi = arg;
425 
426 	while (begin_synchronized_op(pi, 0, 1) != 0)
427 		continue;
428 	(void) t4_uninit_synchronized(pi);
429 	end_synchronized_op(pi, 0);
430 }
431 
432 static int
433 t4_mc_setpromisc(void *arg, boolean_t on)
434 {
435 	struct port_info *pi = arg;
436 	struct adapter *sc = pi->adapter;
437 	int rc;
438 
439 	rc = begin_synchronized_op(pi, 1, 1);
440 	if (rc != 0)
441 		return (rc);
442 	rc = -t4_set_rxmode(sc, sc->mbox, pi->viid, -1, on ? 1 : 0, -1, -1, -1,
443 	    false);
444 	end_synchronized_op(pi, 1);
445 
446 	return (rc);
447 }
448 
449 /*
450  * TODO: Starts failing as soon as the 336 entry table fills up.  Need to use
451  * hash in that case.
452  */
453 static int
454 t4_mc_multicst(void *arg, boolean_t add, const uint8_t *mcaddr)
455 {
456 	struct port_info *pi = arg;
457 	struct adapter *sc = pi->adapter;
458 	struct fw_vi_mac_cmd c;
459 	int len16, rc;
460 
461 	len16 = howmany(sizeof (c.op_to_viid) + sizeof (c.freemacs_to_len16) +
462 	    sizeof (c.u.exact[0]), 16);
463 	c.op_to_viid = htonl(V_FW_CMD_OP(FW_VI_MAC_CMD) | F_FW_CMD_REQUEST |
464 	    F_FW_CMD_WRITE | V_FW_VI_MAC_CMD_VIID(pi->viid));
465 	c.freemacs_to_len16 = htonl(V_FW_CMD_LEN16(len16));
466 	c.u.exact[0].valid_to_idx = htons(F_FW_VI_MAC_CMD_VALID |
467 	    V_FW_VI_MAC_CMD_IDX(add ? FW_VI_MAC_ADD_MAC :
468 	    FW_VI_MAC_MAC_BASED_FREE));
469 	bcopy(mcaddr, &c.u.exact[0].macaddr, ETHERADDRL);
470 
471 	rc = begin_synchronized_op(pi, 1, 1);
472 	if (rc != 0)
473 		return (rc);
474 	rc = -t4_wr_mbox_meat(sc, sc->mbox, &c, len16 * 16, &c, true);
475 	end_synchronized_op(pi, 1);
476 	if (rc != 0)
477 		return (rc);
478 #ifdef DEBUG
479 	/*
480 	 * TODO: Firmware doesn't seem to return the correct index on removal
481 	 * (it gives back 0x3fd FW_VI_MAC_MAC_BASED_FREE unchanged. Remove this
482 	 * code once it is fixed.
483 	 */
484 	else {
485 		uint16_t idx;
486 
487 		idx = G_FW_VI_MAC_CMD_IDX(ntohs(c.u.exact[0].valid_to_idx));
488 		cxgb_printf(pi->dip, CE_NOTE,
489 		    "%02x:%02x:%02x:%02x:%02x:%02x %s %d", mcaddr[0],
490 		    mcaddr[1], mcaddr[2], mcaddr[3], mcaddr[4], mcaddr[5],
491 		    add ? "added at index" : "removed from index", idx);
492 	}
493 #endif
494 
495 	return (0);
496 }
497 
498 int
499 t4_mc_unicst(void *arg, const uint8_t *ucaddr)
500 {
501 	struct port_info *pi = arg;
502 	struct adapter *sc = pi->adapter;
503 	int rc;
504 
505 	if (ucaddr == NULL)
506 		return (EINVAL);
507 
508 	rc = begin_synchronized_op(pi, 1, 1);
509 	if (rc != 0)
510 		return (rc);
511 
512 	/* We will support adding only one mac address */
513 	if (pi->adapter->props.multi_rings && pi->macaddr_cnt) {
514 		end_synchronized_op(pi, 1);
515 		return (ENOSPC);
516 	}
517 	rc = t4_change_mac(sc, sc->mbox, pi->viid, pi->xact_addr_filt, ucaddr,
518 			   true, true);
519 	if (rc < 0)
520 		rc = -rc;
521 	else {
522 		pi->macaddr_cnt++;
523 		pi->xact_addr_filt = rc;
524 		rc = 0;
525 	}
526 	end_synchronized_op(pi, 1);
527 
528 	return (rc);
529 }
530 
531 int
532 t4_addmac(void *arg, const uint8_t *ucaddr)
533 {
534 	return (t4_mc_unicst(arg, ucaddr));
535 }
536 
537 static int
538 t4_remmac(void *arg, const uint8_t *mac_addr)
539 {
540 	struct port_info *pi = arg;
541 	int rc;
542 
543 	rc = begin_synchronized_op(pi, 1, 1);
544 	if (rc != 0)
545 		return (rc);
546 
547 	pi->macaddr_cnt--;
548 	end_synchronized_op(pi, 1);
549 
550 	return (0);
551 }
552 
553 /*
554  * Callback funtion for MAC layer to register all groups.
555  */
556 void
557 t4_fill_group(void *arg, mac_ring_type_t rtype, const int rg_index,
558 	      mac_group_info_t *infop, mac_group_handle_t gh)
559 {
560 	struct port_info *pi = arg;
561 
562 	switch (rtype) {
563 	case MAC_RING_TYPE_RX: {
564 		infop->mgi_driver = (mac_group_driver_t)arg;
565 		infop->mgi_start = NULL;
566 		infop->mgi_stop = NULL;
567 		infop->mgi_addmac = t4_addmac;
568 		infop->mgi_remmac = t4_remmac;
569 		infop->mgi_count = pi->nrxq;
570 		break;
571 	}
572 	case MAC_RING_TYPE_TX:
573 	default:
574 		ASSERT(0);
575 		break;
576 	}
577 }
578 
579 static int
580 t4_ring_start(mac_ring_driver_t rh, uint64_t mr_gen_num)
581 {
582 	struct sge_rxq *rxq = (struct sge_rxq *)rh;
583 
584 	RXQ_LOCK(rxq);
585 	rxq->ring_gen_num = mr_gen_num;
586 	RXQ_UNLOCK(rxq);
587 	return (0);
588 }
589 
590 /*
591  * Enable interrupt on the specificed rx ring.
592  */
593 int
594 t4_ring_intr_enable(mac_intr_handle_t intrh)
595 {
596 	struct sge_rxq *rxq = (struct sge_rxq *)intrh;
597 	struct adapter *sc = rxq->port->adapter;
598 	struct sge_iq *iq;
599 
600 	iq = &rxq->iq;
601 	RXQ_LOCK(rxq);
602 	iq->polling = 0;
603 	iq->state = IQS_IDLE;
604 	t4_write_reg(sc, MYPF_REG(A_SGE_PF_GTS),
605 		     V_SEINTARM(iq->intr_params) | V_INGRESSQID(iq->cntxt_id));
606 	RXQ_UNLOCK(rxq);
607 	return (0);
608 }
609 
610 /*
611  * Disable interrupt on the specificed rx ring.
612  */
613 int
614 t4_ring_intr_disable(mac_intr_handle_t intrh)
615 {
616 	struct sge_rxq *rxq = (struct sge_rxq *)intrh;
617 	struct sge_iq *iq;
618 
619 	/* Nothing to be done here wrt interrupt, as it
620 	 * will not fire, until we write back to
621 	 * A_SGE_PF_GTS.SEIntArm in t4_ring_intr_enable.
622 	 */
623 
624 	iq = &rxq->iq;
625 	RXQ_LOCK(rxq);
626 	iq->polling = 1;
627 	iq->state = IQS_BUSY;
628 	RXQ_UNLOCK(rxq);
629 	return (0);
630 }
631 
632 mblk_t *
633 t4_poll_ring(void *arg, int n_bytes)
634 {
635 	struct sge_rxq *rxq = (struct sge_rxq *)arg;
636 	mblk_t *mp = NULL;
637 
638 	ASSERT(n_bytes >= 0);
639 	if (n_bytes == 0)
640 		return (NULL);
641 
642 	RXQ_LOCK(rxq);
643 	mp = t4_ring_rx(rxq, n_bytes);
644 	RXQ_UNLOCK(rxq);
645 
646 	return (mp);
647 }
648 
649 /*
650  * Retrieve a value for one of the statistics for a particular rx ring
651  */
652 int
653 t4_rx_stat(mac_ring_driver_t rh, uint_t stat, uint64_t *val)
654 {
655 	struct sge_rxq *rxq = (struct sge_rxq *)rh;
656 
657 	switch (stat) {
658 	case MAC_STAT_RBYTES:
659 		*val = rxq->rxbytes;
660 		break;
661 
662 	case MAC_STAT_IPACKETS:
663 		*val = rxq->rxpkts;
664 		break;
665 
666 	default:
667 		*val = 0;
668 		return (ENOTSUP);
669 	}
670 
671 	return (0);
672 }
673 
674 /*
675  * Retrieve a value for one of the statistics for a particular tx ring
676  */
677 int
678 t4_tx_stat(mac_ring_driver_t rh, uint_t stat, uint64_t *val)
679 {
680 	struct sge_txq *txq = (struct sge_txq *)rh;
681 
682 	switch (stat) {
683 	case MAC_STAT_RBYTES:
684 		*val = txq->txbytes;
685 		break;
686 
687 	case MAC_STAT_IPACKETS:
688 		*val = txq->txpkts;
689 		break;
690 
691 	default:
692 		*val = 0;
693 		return (ENOTSUP);
694 	}
695 
696 	return (0);
697 }
698 
699 /*
700  * Callback funtion for MAC layer to register all rings
701  * for given ring_group, noted by group_index.
702  * Since we have only one group, ring index becomes
703  * absolute index.
704  */
705 void
706 t4_fill_ring(void *arg, mac_ring_type_t rtype, const int group_index,
707 	     const int ring_index, mac_ring_info_t *infop, mac_ring_handle_t rh)
708 {
709 	struct port_info *pi = arg;
710 	mac_intr_t *mintr;
711 
712 	switch (rtype) {
713 	case MAC_RING_TYPE_RX: {
714 		struct sge_rxq *rxq;
715 
716 		rxq = &pi->adapter->sge.rxq[pi->first_rxq + ring_index];
717 		rxq->ring_handle = rh;
718 
719 		infop->mri_driver = (mac_ring_driver_t)rxq;
720 		infop->mri_start = t4_ring_start;
721 		infop->mri_stop = NULL;
722 		infop->mri_poll = t4_poll_ring;
723 		infop->mri_stat = t4_rx_stat;
724 
725 		mintr = &infop->mri_intr;
726 		mintr->mi_handle = (mac_intr_handle_t)rxq;
727 		mintr->mi_enable = t4_ring_intr_enable;
728 		mintr->mi_disable = t4_ring_intr_disable;
729 
730 		break;
731 	}
732 	case MAC_RING_TYPE_TX: {
733 		struct sge_txq *txq = &pi->adapter->sge.txq[pi->first_txq + ring_index];
734 		txq->ring_handle = rh;
735 		infop->mri_driver = (mac_ring_driver_t)txq;
736 		infop->mri_start = NULL;
737 		infop->mri_stop = NULL;
738 		infop->mri_tx = t4_eth_tx;
739 		infop->mri_stat = t4_tx_stat;
740 		break;
741 	}
742 	default:
743 		ASSERT(0);
744 		break;
745 	}
746 }
747 
748 mblk_t *
749 t4_mc_tx(void *arg, mblk_t *m)
750 {
751 	struct port_info *pi = arg;
752 	struct adapter *sc = pi->adapter;
753 	struct sge_txq *txq = &sc->sge.txq[pi->first_txq];
754 
755 	return (t4_eth_tx(txq, m));
756 }
757 
758 static boolean_t
759 t4_mc_getcapab(void *arg, mac_capab_t cap, void *data)
760 {
761 	struct port_info *pi = arg;
762 	boolean_t status = B_TRUE;
763 
764 	switch (cap) {
765 	case MAC_CAPAB_HCKSUM:
766 		if (pi->features & CXGBE_HW_CSUM) {
767 			uint32_t *d = data;
768 			*d = HCKSUM_INET_FULL_V4 | HCKSUM_IPHDRCKSUM;
769 		} else
770 			status = B_FALSE;
771 		break;
772 
773 	case MAC_CAPAB_LSO:
774 		/* Enabling LSO requires Checksum offloading */
775 		if (pi->features & CXGBE_HW_LSO &&
776 		    pi->features & CXGBE_HW_CSUM) {
777 			mac_capab_lso_t *d = data;
778 
779 			d->lso_flags = LSO_TX_BASIC_TCP_IPV4;
780 			d->lso_basic_tcp_ipv4.lso_max = 65535;
781 		} else
782 			status = B_FALSE;
783 		break;
784 
785 	case MAC_CAPAB_RINGS: {
786 		mac_capab_rings_t *cap_rings = data;
787 
788 		if (!pi->adapter->props.multi_rings) {
789 			status = B_FALSE;
790 			break;
791 		}
792 		switch (cap_rings->mr_type) {
793 		case MAC_RING_TYPE_RX:
794 			cap_rings->mr_group_type = MAC_GROUP_TYPE_STATIC;
795 			cap_rings->mr_rnum = pi->nrxq;
796 			cap_rings->mr_gnum = 1;
797 			cap_rings->mr_rget = t4_fill_ring;
798 			cap_rings->mr_gget = t4_fill_group;
799 			cap_rings->mr_gaddring = NULL;
800 			cap_rings->mr_gremring = NULL;
801 			break;
802 		case MAC_RING_TYPE_TX:
803 			cap_rings->mr_group_type = MAC_GROUP_TYPE_STATIC;
804 			cap_rings->mr_rnum = pi->ntxq;
805 			cap_rings->mr_gnum = 0;
806 			cap_rings->mr_rget = t4_fill_ring;
807 			cap_rings->mr_gget = NULL;
808 			break;
809 		}
810 		break;
811 	}
812 	default:
813 		status = B_FALSE; /* cap not supported */
814 	}
815 
816 	return (status);
817 }
818 
819 /* ARGSUSED */
820 static int
821 t4_mc_setprop(void *arg, const char *name, mac_prop_id_t id, uint_t size,
822     const void *val)
823 {
824 	struct port_info *pi = arg;
825 	struct adapter *sc = pi->adapter;
826 	struct link_config lc_copy, *lc = &pi->link_cfg;
827 	uint8_t v8 = *(uint8_t *)val;
828 	uint32_t v32 = *(uint32_t *)val;
829 	int old, new = 0, relink = 0, rx_mode = 0, rc = 0;
830 	link_flowctrl_t fc;
831 
832 	/*
833 	 * Save a copy of link_config. This can be used to restore link_config
834 	 * if t4_link_l1cfg() fails.
835 	 */
836 	bcopy(lc, &lc_copy, sizeof (struct link_config));
837 
838 	switch (id) {
839 	case MAC_PROP_AUTONEG:
840 		if (lc->supported & FW_PORT_CAP_ANEG) {
841 			old = lc->autoneg;
842 			new = v8 ? AUTONEG_ENABLE : AUTONEG_DISABLE;
843 			if (old != new) {
844 				/* LINTED: E_CONSTANT_CONDITION */
845 				lc->autoneg = new;
846 				relink = 1;
847 				if (new == AUTONEG_DISABLE) {
848 					/* Only 100M is available */
849 					lc->requested_speed =
850 					    FW_PORT_CAP_SPEED_100M;
851 					lc->advertising =
852 					    FW_PORT_CAP_SPEED_100M;
853 				} else {
854 					/*
855 					 * Advertise autonegotiation capability
856 					 * along with supported speeds
857 					 */
858 					lc->advertising |= (FW_PORT_CAP_ANEG |
859 					    (lc->supported &
860 					    (FW_PORT_CAP_SPEED_100M |
861 					    FW_PORT_CAP_SPEED_1G)));
862 					lc->requested_speed = 0;
863 				}
864 			}
865 		} else
866 			rc = ENOTSUP;
867 		break;
868 
869 	case MAC_PROP_MTU:
870 		if (v32 < 46 || v32 > MAX_MTU) {
871 			rc = EINVAL;
872 		} else if (v32 != pi->mtu) {
873 			pi->mtu = v32;
874 			(void) mac_maxsdu_update(pi->mh, v32);
875 			rx_mode = 1;
876 		}
877 
878 		break;
879 
880 	case MAC_PROP_FLOWCTRL:
881 		fc = *(link_flowctrl_t *)val;
882 		old = lc->requested_fc & (PAUSE_TX | PAUSE_RX);
883 
884 		if (fc == LINK_FLOWCTRL_BI)
885 			new = (PAUSE_TX | PAUSE_RX);
886 		else if (fc == LINK_FLOWCTRL_TX)
887 			new = PAUSE_TX;
888 		else if (fc == LINK_FLOWCTRL_RX)
889 			new = PAUSE_RX;
890 
891 		if (new != old) {
892 			lc->requested_fc &= ~(PAUSE_TX | PAUSE_RX);
893 			lc->requested_fc |= new;
894 			relink = 1;
895 		}
896 		break;
897 
898 	case MAC_PROP_EN_10GFDX_CAP:
899 		if (lc->supported & FW_PORT_CAP_ANEG && is_10G_port(pi)) {
900 			old = lc->advertising & FW_PORT_CAP_SPEED_10G;
901 			new = v8 ? FW_PORT_CAP_SPEED_10G : 0;
902 			if (new != old) {
903 				lc->advertising &= ~FW_PORT_CAP_SPEED_10G;
904 				lc->advertising |= new;
905 				relink = 1;
906 			}
907 		} else
908 			rc = ENOTSUP;
909 
910 		break;
911 
912 	case MAC_PROP_EN_1000FDX_CAP:
913 		/* Forced 1G */
914 		if (lc->autoneg == AUTONEG_ENABLE) {
915 			old = lc->advertising & FW_PORT_CAP_SPEED_1G;
916 			new = v8 ? FW_PORT_CAP_SPEED_1G : 0;
917 
918 			if (old != new) {
919 				lc->advertising &= ~FW_PORT_CAP_SPEED_1G;
920 				lc->advertising |= new;
921 				relink = 1;
922 			}
923 		} else
924 			rc = ENOTSUP;
925 		break;
926 
927 	case MAC_PROP_EN_100FDX_CAP:
928 		/* Forced 100M */
929 		if (lc->autoneg == AUTONEG_ENABLE) {
930 			old = lc->advertising & FW_PORT_CAP_SPEED_100M;
931 			new = v8 ? FW_PORT_CAP_SPEED_100M : 0;
932 			if (old != new) {
933 				lc->advertising &= ~FW_PORT_CAP_SPEED_100M;
934 				lc->advertising |= new;
935 				relink = 1;
936 			}
937 		} else
938 			rc = ENOTSUP;
939 		break;
940 
941 	case MAC_PROP_PRIVATE:
942 		rc = setprop(pi, name, val);
943 		break;
944 
945 	default:
946 		rc = ENOTSUP;
947 	}
948 
949 	if (isset(&sc->open_device_map, pi->port_id) != 0) {
950 		if (relink != 0) {
951 			t4_os_link_changed(pi->adapter, pi->port_id, 0);
952 			rc = begin_synchronized_op(pi, 1, 1);
953 			if (rc != 0)
954 				return (rc);
955 			rc = -t4_link_l1cfg(sc, sc->mbox, pi->tx_chan,
956 			    &pi->link_cfg);
957 			end_synchronized_op(pi, 1);
958 			if (rc != 0) {
959 				cxgb_printf(pi->dip, CE_WARN,
960 				    "start_link failed:%d", rc);
961 
962 				/* Restore link_config */
963 				bcopy(&lc_copy, lc,
964 				    sizeof (struct link_config));
965 			}
966 		}
967 
968 		if (rx_mode != 0) {
969 			rc = begin_synchronized_op(pi, 1, 1);
970 			if (rc != 0)
971 				return (rc);
972 			rc = -t4_set_rxmode(sc, sc->mbox, pi->viid, v32, -1,
973 			    -1, -1, -1, false);
974 			end_synchronized_op(pi, 1);
975 			if (rc != 0) {
976 				cxgb_printf(pi->dip, CE_WARN,
977 				    "set_rxmode failed: %d", rc);
978 			}
979 		}
980 	}
981 
982 	return (rc);
983 }
984 
985 static int
986 t4_mc_getprop(void *arg, const char *name, mac_prop_id_t id, uint_t size,
987     void *val)
988 {
989 	struct port_info *pi = arg;
990 	struct link_config *lc = &pi->link_cfg;
991 	uint8_t *u = val;
992 
993 	switch (id) {
994 	case MAC_PROP_DUPLEX:
995 		*(link_duplex_t *)val = lc->link_ok ? LINK_DUPLEX_FULL :
996 		    LINK_DUPLEX_UNKNOWN;
997 		break;
998 
999 	case MAC_PROP_SPEED:
1000 		if (lc->link_ok != 0) {
1001 			*(uint64_t *)val = lc->speed;
1002 			*(uint64_t *)val *= 1000000;
1003 		} else
1004 			*(uint64_t *)val = 0;
1005 		break;
1006 
1007 	case MAC_PROP_STATUS:
1008 		*(link_state_t *)val = lc->link_ok ? LINK_STATE_UP :
1009 		    LINK_STATE_DOWN;
1010 		break;
1011 
1012 	case MAC_PROP_AUTONEG:
1013 		*u = lc->autoneg == AUTONEG_ENABLE;
1014 		break;
1015 
1016 	case MAC_PROP_MTU:
1017 		*(uint32_t *)val = pi->mtu;
1018 		break;
1019 
1020 	case MAC_PROP_FLOWCTRL:
1021 		if ((lc->requested_fc & (PAUSE_TX | PAUSE_RX)) ==
1022 		    (PAUSE_TX | PAUSE_RX))
1023 			*(link_flowctrl_t *)val = LINK_FLOWCTRL_BI;
1024 		else if (lc->requested_fc & PAUSE_TX)
1025 			*(link_flowctrl_t *)val = LINK_FLOWCTRL_TX;
1026 		else if (lc->requested_fc & PAUSE_RX)
1027 			*(link_flowctrl_t *)val = LINK_FLOWCTRL_RX;
1028 		else
1029 			*(link_flowctrl_t *)val = LINK_FLOWCTRL_NONE;
1030 		break;
1031 
1032 	case MAC_PROP_ADV_100GFDX_CAP:
1033 	case MAC_PROP_EN_100GFDX_CAP:
1034 		*u = !!(lc->advertising & FW_PORT_CAP_SPEED_100G);
1035 		break;
1036 
1037 	case MAC_PROP_ADV_40GFDX_CAP:
1038 	case MAC_PROP_EN_40GFDX_CAP:
1039 		*u = !!(lc->advertising & FW_PORT_CAP_SPEED_40G);
1040 		break;
1041 
1042 	case MAC_PROP_ADV_25GFDX_CAP:
1043 	case MAC_PROP_EN_25GFDX_CAP:
1044 		*u = !!(lc->advertising & FW_PORT_CAP_SPEED_25G);
1045 		break;
1046 
1047 	case MAC_PROP_ADV_10GFDX_CAP:
1048 	case MAC_PROP_EN_10GFDX_CAP:
1049 		*u = !!(lc->advertising & FW_PORT_CAP_SPEED_10G);
1050 		break;
1051 
1052 	case MAC_PROP_ADV_1000FDX_CAP:
1053 	case MAC_PROP_EN_1000FDX_CAP:
1054 		*u = !!(lc->advertising & FW_PORT_CAP_SPEED_1G);
1055 		break;
1056 
1057 	case MAC_PROP_ADV_100FDX_CAP:
1058 	case MAC_PROP_EN_100FDX_CAP:
1059 		*u = !!(lc->advertising & FW_PORT_CAP_SPEED_100M);
1060 		break;
1061 
1062 	case MAC_PROP_PRIVATE:
1063 		return (getprop(pi, name, size, val));
1064 
1065 	default:
1066 		return (ENOTSUP);
1067 	}
1068 
1069 	return (0);
1070 }
1071 
1072 static void
1073 t4_mc_propinfo(void *arg, const char *name, mac_prop_id_t id,
1074     mac_prop_info_handle_t ph)
1075 {
1076 	struct port_info *pi = arg;
1077 	struct link_config *lc = &pi->link_cfg;
1078 
1079 	switch (id) {
1080 	case MAC_PROP_DUPLEX:
1081 	case MAC_PROP_SPEED:
1082 	case MAC_PROP_STATUS:
1083 		mac_prop_info_set_perm(ph, MAC_PROP_PERM_READ);
1084 		break;
1085 
1086 	case MAC_PROP_AUTONEG:
1087 		if (lc->supported & FW_PORT_CAP_ANEG)
1088 			mac_prop_info_set_default_uint8(ph, 1);
1089 		else
1090 			mac_prop_info_set_perm(ph, MAC_PROP_PERM_READ);
1091 		break;
1092 
1093 	case MAC_PROP_MTU:
1094 		mac_prop_info_set_range_uint32(ph, 46, MAX_MTU);
1095 		break;
1096 
1097 	case MAC_PROP_FLOWCTRL:
1098 		mac_prop_info_set_default_link_flowctrl(ph, LINK_FLOWCTRL_BI);
1099 		break;
1100 
1101 	case MAC_PROP_EN_10GFDX_CAP:
1102 		if (lc->supported & FW_PORT_CAP_ANEG &&
1103 		    lc->supported & FW_PORT_CAP_SPEED_10G)
1104 			mac_prop_info_set_default_uint8(ph, 1);
1105 		else
1106 			mac_prop_info_set_perm(ph, MAC_PROP_PERM_READ);
1107 		break;
1108 
1109 	case MAC_PROP_EN_1000FDX_CAP:
1110 		if (lc->supported & FW_PORT_CAP_ANEG &&
1111 		    lc->supported & FW_PORT_CAP_SPEED_1G)
1112 			mac_prop_info_set_default_uint8(ph, 1);
1113 		else
1114 			mac_prop_info_set_perm(ph, MAC_PROP_PERM_READ);
1115 		break;
1116 
1117 	case MAC_PROP_EN_100FDX_CAP:
1118 		if (lc->supported & FW_PORT_CAP_ANEG &&
1119 		    lc->supported & FW_PORT_CAP_SPEED_100M)
1120 			mac_prop_info_set_default_uint8(ph, 1);
1121 		else
1122 			mac_prop_info_set_perm(ph, MAC_PROP_PERM_READ);
1123 		break;
1124 
1125 	case MAC_PROP_ADV_10GFDX_CAP:
1126 	case MAC_PROP_ADV_1000FDX_CAP:
1127 	case MAC_PROP_ADV_100FDX_CAP:
1128 		mac_prop_info_set_perm(ph, MAC_PROP_PERM_READ);
1129 		break;
1130 
1131 	case MAC_PROP_PRIVATE:
1132 		propinfo(pi, name, ph);
1133 		break;
1134 
1135 	default:
1136 		break;
1137 	}
1138 }
1139 
1140 static int
1141 begin_synchronized_op(struct port_info *pi, int hold, int waitok)
1142 {
1143 	struct adapter *sc = pi->adapter;
1144 	int rc = 0;
1145 
1146 	ADAPTER_LOCK(sc);
1147 	while (!IS_DOOMED(pi) && IS_BUSY(sc)) {
1148 		if (!waitok) {
1149 			rc = EBUSY;
1150 			goto failed;
1151 		} else if (cv_wait_sig(&sc->cv, &sc->lock) == 0) {
1152 			rc = EINTR;
1153 			goto failed;
1154 		}
1155 	}
1156 	if (IS_DOOMED(pi) != 0) {	/* shouldn't happen on Solaris */
1157 		rc = ENXIO;
1158 		goto failed;
1159 	}
1160 	ASSERT(!IS_BUSY(sc));
1161 	/* LINTED: E_CONSTANT_CONDITION */
1162 	SET_BUSY(sc);
1163 
1164 	if (!hold)
1165 		ADAPTER_UNLOCK(sc);
1166 
1167 	return (0);
1168 failed:
1169 	ADAPTER_UNLOCK(sc);
1170 	return (rc);
1171 }
1172 
1173 static void
1174 end_synchronized_op(struct port_info *pi, int held)
1175 {
1176 	struct adapter *sc = pi->adapter;
1177 
1178 	if (!held)
1179 		ADAPTER_LOCK(sc);
1180 
1181 	ADAPTER_LOCK_ASSERT_OWNED(sc);
1182 	ASSERT(IS_BUSY(sc));
1183 	/* LINTED: E_CONSTANT_CONDITION */
1184 	CLR_BUSY(sc);
1185 	cv_signal(&sc->cv);
1186 	ADAPTER_UNLOCK(sc);
1187 }
1188 
1189 static int
1190 t4_init_synchronized(struct port_info *pi)
1191 {
1192 	struct adapter *sc = pi->adapter;
1193 	int rc = 0;
1194 
1195 	ADAPTER_LOCK_ASSERT_NOTOWNED(sc);
1196 
1197 	if (isset(&sc->open_device_map, pi->port_id) != 0)
1198 		return (0);	/* already running */
1199 
1200 	if (!(sc->flags & FULL_INIT_DONE) &&
1201 	    ((rc = adapter_full_init(sc)) != 0))
1202 		return (rc);	/* error message displayed already */
1203 
1204 	if (!(pi->flags & PORT_INIT_DONE)) {
1205 		rc = port_full_init(pi);
1206 		if (rc != 0)
1207 			return (rc); /* error message displayed already */
1208 	} else
1209 		enable_port_queues(pi);
1210 
1211 	rc = -t4_set_rxmode(sc, sc->mbox, pi->viid, pi->mtu, 0, 0, 1, 0, false);
1212 	if (rc != 0) {
1213 		cxgb_printf(pi->dip, CE_WARN, "set_rxmode failed: %d", rc);
1214 		goto done;
1215 	}
1216 	rc = t4_change_mac(sc, sc->mbox, pi->viid, pi->xact_addr_filt,
1217 	    pi->hw_addr, true, true);
1218 	if (rc < 0) {
1219 		cxgb_printf(pi->dip, CE_WARN, "change_mac failed: %d", rc);
1220 		rc = -rc;
1221 		goto done;
1222 	} else
1223 		/* LINTED: E_ASSIGN_NARROW_CONV */
1224 		pi->xact_addr_filt = rc;
1225 
1226 	rc = -t4_link_l1cfg(sc, sc->mbox, pi->tx_chan, &pi->link_cfg);
1227 	if (rc != 0) {
1228 		cxgb_printf(pi->dip, CE_WARN, "start_link failed: %d", rc);
1229 		goto done;
1230 	}
1231 
1232 	rc = -t4_enable_vi(sc, sc->mbox, pi->viid, true, true);
1233 	if (rc != 0) {
1234 		cxgb_printf(pi->dip, CE_WARN, "enable_vi failed: %d", rc);
1235 		goto done;
1236 	}
1237 
1238 	/* all ok */
1239 	setbit(&sc->open_device_map, pi->port_id);
1240 done:
1241 	if (rc != 0)
1242 		(void) t4_uninit_synchronized(pi);
1243 
1244 	return (rc);
1245 }
1246 
1247 /*
1248  * Idempotent.
1249  */
1250 static int
1251 t4_uninit_synchronized(struct port_info *pi)
1252 {
1253 	struct adapter *sc = pi->adapter;
1254 	int rc;
1255 
1256 	ADAPTER_LOCK_ASSERT_NOTOWNED(sc);
1257 
1258 	/*
1259 	 * Disable the VI so that all its data in either direction is discarded
1260 	 * by the MPS.  Leave everything else (the queues, interrupts, and 1Hz
1261 	 * tick) intact as the TP can deliver negative advice or data that it's
1262 	 * holding in its RAM (for an offloaded connection) even after the VI is
1263 	 * disabled.
1264 	 */
1265 	rc = -t4_enable_vi(sc, sc->mbox, pi->viid, false, false);
1266 	if (rc != 0) {
1267 		cxgb_printf(pi->dip, CE_WARN, "disable_vi failed: %d", rc);
1268 		return (rc);
1269 	}
1270 
1271 	disable_port_queues(pi);
1272 
1273 	clrbit(&sc->open_device_map, pi->port_id);
1274 
1275 	pi->link_cfg.link_ok = 0;
1276 	pi->link_cfg.speed = 0;
1277 	mac_link_update(pi->mh, LINK_STATE_UNKNOWN);
1278 
1279 	return (0);
1280 }
1281 
1282 static void
1283 propinfo(struct port_info *pi, const char *name, mac_prop_info_handle_t ph)
1284 {
1285 	struct adapter *sc = pi->adapter;
1286 	struct driver_properties *p = &sc->props;
1287 	struct link_config *lc = &pi->link_cfg;
1288 	int v;
1289 	char str[16];
1290 
1291 	if (strcmp(name, T4PROP_TMR_IDX) == 0)
1292 		v = is_10G_port(pi) ? p->tmr_idx_10g : p->tmr_idx_1g;
1293 	else if (strcmp(name, T4PROP_PKTC_IDX) == 0)
1294 		v = is_10G_port(pi) ? p->pktc_idx_10g : p->pktc_idx_1g;
1295 	else if (strcmp(name, T4PROP_HW_CSUM) == 0)
1296 		v = (pi->features & CXGBE_HW_CSUM) ? 1 : 0;
1297 	else if (strcmp(name, T4PROP_HW_LSO) == 0)
1298 		v = (pi->features & CXGBE_HW_LSO) ? 1 : 0;
1299 	else if (strcmp(name, T4PROP_TX_PAUSE) == 0)
1300 		v = (lc->fc & PAUSE_TX) ? 1 : 0;
1301 	else if (strcmp(name, T4PROP_RX_PAUSE) == 0)
1302 		v = (lc->fc & PAUSE_RX) ? 1 : 0;
1303 #if MAC_VERSION == 1
1304 	else if (strcmp(name, T4PROP_MTU) == 0)
1305 		v = ETHERMTU;
1306 #endif
1307 	else
1308 		return;
1309 
1310 	(void) snprintf(str, sizeof (str), "%d", v);
1311 	mac_prop_info_set_default_str(ph, str);
1312 }
1313 
1314 static int
1315 getprop(struct port_info *pi, const char *name, uint_t size, void *val)
1316 {
1317 	struct link_config *lc = &pi->link_cfg;
1318 	int v;
1319 
1320 	if (strcmp(name, T4PROP_TMR_IDX) == 0)
1321 		v = pi->tmr_idx;
1322 	else if (strcmp(name, T4PROP_PKTC_IDX) == 0)
1323 		v = pi->pktc_idx;
1324 	else if (strcmp(name, T4PROP_HW_CSUM) == 0)
1325 		v = (pi->features & CXGBE_HW_CSUM) ? 1 : 0;
1326 	else if (strcmp(name, T4PROP_HW_LSO) == 0)
1327 		v = (pi->features & CXGBE_HW_LSO) ? 1 : 0;
1328 	else if (strcmp(name, T4PROP_TX_PAUSE) == 0)
1329 		v = (lc->fc & PAUSE_TX) ? 1 : 0;
1330 	else if (strcmp(name, T4PROP_RX_PAUSE) == 0)
1331 		v = (lc->fc & PAUSE_RX) ? 1 : 0;
1332 #if MAC_VERSION == 1
1333 	else if (strcmp(name, T4PROP_MTU) == 0)
1334 		v = pi->mtu;
1335 #endif
1336 	else
1337 		return (ENOTSUP);
1338 
1339 	(void) snprintf(val, size, "%d", v);
1340 	return (0);
1341 }
1342 
1343 static int
1344 setprop(struct port_info *pi, const char *name, const void *val)
1345 {
1346 	struct adapter *sc = pi->adapter;
1347 	long v;
1348 	int i, rc = 0, relink = 0, rx_mode = 0;
1349 	struct sge_rxq *rxq;
1350 	struct link_config lc_old, *lc = &pi->link_cfg;
1351 
1352 	/*
1353 	 * Save a copy of link_config. This can be used to restore link_config
1354 	 * if t4_link_l1cfg() fails.
1355 	 */
1356 	bcopy(lc, &lc_old, sizeof (struct link_config));
1357 
1358 	(void) ddi_strtol(val, NULL, 0, &v);
1359 
1360 	if (strcmp(name, T4PROP_TMR_IDX) == 0) {
1361 		if (v < 0 || v >= SGE_NTIMERS)
1362 			return (EINVAL);
1363 		if (v == pi->tmr_idx)
1364 			return (0);
1365 
1366 		/* LINTED: E_ASSIGN_NARROW_CONV */
1367 		pi->tmr_idx = v;
1368 		for_each_rxq(pi, i, rxq) {
1369 			rxq->iq.intr_params = V_QINTR_TIMER_IDX(v) |
1370 			    V_QINTR_CNT_EN(pi->pktc_idx >= 0);
1371 		}
1372 
1373 	} else if (strcmp(name, T4PROP_PKTC_IDX) == 0) {
1374 		if (v >= SGE_NCOUNTERS)
1375 			return (EINVAL);
1376 		if (v == pi->pktc_idx || (v < 0 && pi->pktc_idx == -1))
1377 			return (0);
1378 
1379 		/* LINTED: E_ASSIGN_NARROW_CONV */
1380 		pi->pktc_idx = v < 0 ? -1 : v;
1381 		for_each_rxq(pi, i, rxq) {
1382 			rxq->iq.intr_params = V_QINTR_TIMER_IDX(pi->tmr_idx) |
1383 			    /* takes effect right away */
1384 			    V_QINTR_CNT_EN(v >= 0);
1385 			/* LINTED: E_ASSIGN_NARROW_CONV */
1386 			rxq->iq.intr_pktc_idx = v; /* this needs fresh plumb */
1387 		}
1388 	} else if (strcmp(name, T4PROP_HW_CSUM) == 0) {
1389 		if (v != 0 && v != 1)
1390 			return (EINVAL);
1391 		if (v == 1)
1392 			pi->features |= CXGBE_HW_CSUM;
1393 		else
1394 			pi->features &= ~CXGBE_HW_CSUM;
1395 	} else if (strcmp(name, T4PROP_HW_LSO) == 0) {
1396 		if (v != 0 && v != 1)
1397 			return (EINVAL);
1398 		if (v == 1)
1399 			pi->features |= CXGBE_HW_LSO;
1400 		else
1401 			pi->features &= ~CXGBE_HW_LSO;
1402 	} else if (strcmp(name, T4PROP_TX_PAUSE) == 0) {
1403 		if (v != 0 && v != 1)
1404 			return (EINVAL);
1405 
1406 		if (v != 0)
1407 			lc->requested_fc |= PAUSE_TX;
1408 		else
1409 			lc->requested_fc &= ~PAUSE_TX;
1410 
1411 		relink = 1;
1412 
1413 	} else if (strcmp(name, T4PROP_RX_PAUSE) == 0) {
1414 		if (v != 0 && v != 1)
1415 			return (EINVAL);
1416 
1417 		if (v != 0)
1418 			lc->requested_fc |= PAUSE_RX;
1419 		else
1420 			lc->requested_fc &= ~PAUSE_RX;
1421 
1422 		relink = 1;
1423 	}
1424 #if MAC_VERSION == 1
1425 	else if (strcmp(name, T4PROP_MTU) == 0) {
1426 		if (v < 46 || v > MAX_MTU)
1427 			return (EINVAL);
1428 		if (v == pi->mtu)
1429 			return (0);
1430 
1431 		pi->mtu = (int)v;
1432 		(void) mac_maxsdu_update(pi->mh, v);
1433 		rx_mode = 1;
1434 	}
1435 #endif
1436 	else
1437 		return (ENOTSUP);
1438 
1439 	if (!(relink || rx_mode))
1440 		return (0);
1441 
1442 	/* If we are here, either relink or rx_mode is 1 */
1443 	if (isset(&sc->open_device_map, pi->port_id) != 0) {
1444 		if (relink != 0) {
1445 			rc = begin_synchronized_op(pi, 1, 1);
1446 			if (rc != 0)
1447 				return (rc);
1448 			rc = -t4_link_l1cfg(sc, sc->mbox, pi->tx_chan, lc);
1449 			end_synchronized_op(pi, 1);
1450 			if (rc != 0) {
1451 				cxgb_printf(pi->dip, CE_WARN,
1452 				    "start_link failed:%d", rc);
1453 				/* Restore link_config */
1454 				bcopy(&lc_old, lc, sizeof (struct link_config));
1455 			}
1456 		} else if (rx_mode != 0) {
1457 			rc = begin_synchronized_op(pi, 1, 1);
1458 			if (rc != 0)
1459 				return (rc);
1460 			rc = -t4_set_rxmode(sc, sc->mbox, pi->viid, v, -1, -1,
1461 			    -1, -1, false);
1462 			end_synchronized_op(pi, 1);
1463 			if (rc != 0)  {
1464 				cxgb_printf(pi->dip, CE_WARN,
1465 				    "set_rxmode failed: %d", rc);
1466 			}
1467 		}
1468 		return (rc);
1469 	}
1470 
1471 	return (0);
1472 }
1473 
1474 void
1475 t4_mc_init(struct port_info *pi)
1476 {
1477 	pi->props = t4_priv_props;
1478 }
1479 
1480 void
1481 t4_mc_cb_init(struct port_info *pi)
1482 {
1483 	if (pi->adapter->props.multi_rings)
1484 		pi->mc = &t4_m_ring_callbacks;
1485 	else
1486 		pi->mc = &t4_m_callbacks;
1487 }
1488 
1489 void
1490 t4_os_link_changed(struct adapter *sc, int idx, int link_stat)
1491 {
1492 	struct port_info *pi = sc->port[idx];
1493 
1494 	mac_link_update(pi->mh, link_stat ? LINK_STATE_UP : LINK_STATE_DOWN);
1495 }
1496 
1497 /* ARGSUSED */
1498 void
1499 t4_mac_rx(struct port_info *pi, struct sge_rxq *rxq, mblk_t *m)
1500 {
1501 	mac_rx(pi->mh, NULL, m);
1502 }
1503 
1504 void
1505 t4_mac_tx_update(struct port_info *pi, struct sge_txq *txq)
1506 {
1507 	if (pi->adapter->props.multi_rings)
1508 		mac_tx_ring_update(pi->mh, txq->ring_handle);
1509 	else
1510 		mac_tx_update(pi->mh);
1511 }
1512