1 // SPDX-License-Identifier: GPL-2.0+
2 /* Microchip Sparx5 Switch driver
3 *
4 * Copyright (c) 2021 Microchip Technology Inc. and its subsidiaries.
5 */
6
7 #include <linux/module.h>
8 #include <linux/phy/phy.h>
9 #include <net/dcbnl.h>
10
11 #include "sparx5_main_regs.h"
12 #include "sparx5_main.h"
13 #include "sparx5_port.h"
14
15 #define SPX5_ETYPE_TAG_C 0x8100
16 #define SPX5_ETYPE_TAG_S 0x88a8
17
18 #define SPX5_WAIT_US 1000
19 #define SPX5_WAIT_MAX_US 2000
20
21 enum port_error {
22 SPX5_PERR_SPEED,
23 SPX5_PERR_IFTYPE,
24 };
25
26 #define PAUSE_DISCARD 0xC
27 #define ETH_MAXLEN (ETH_DATA_LEN + ETH_HLEN + ETH_FCS_LEN)
28
decode_sgmii_word(u16 lp_abil,struct sparx5_port_status * status)29 static void decode_sgmii_word(u16 lp_abil, struct sparx5_port_status *status)
30 {
31 status->an_complete = true;
32 if (!(lp_abil & LPA_SGMII_LINK)) {
33 status->link = false;
34 return;
35 }
36
37 switch (lp_abil & LPA_SGMII_SPD_MASK) {
38 case LPA_SGMII_10:
39 status->speed = SPEED_10;
40 break;
41 case LPA_SGMII_100:
42 status->speed = SPEED_100;
43 break;
44 case LPA_SGMII_1000:
45 status->speed = SPEED_1000;
46 break;
47 default:
48 status->link = false;
49 return;
50 }
51 if (lp_abil & LPA_SGMII_FULL_DUPLEX)
52 status->duplex = DUPLEX_FULL;
53 else
54 status->duplex = DUPLEX_HALF;
55 }
56
decode_cl37_word(u16 lp_abil,uint16_t ld_abil,struct sparx5_port_status * status)57 static void decode_cl37_word(u16 lp_abil, uint16_t ld_abil, struct sparx5_port_status *status)
58 {
59 status->link = !(lp_abil & ADVERTISE_RFAULT) && status->link;
60 status->an_complete = true;
61 status->duplex = (ADVERTISE_1000XFULL & lp_abil) ?
62 DUPLEX_FULL : DUPLEX_UNKNOWN; // 1G HDX not supported
63
64 if ((ld_abil & ADVERTISE_1000XPAUSE) &&
65 (lp_abil & ADVERTISE_1000XPAUSE)) {
66 status->pause = MLO_PAUSE_RX | MLO_PAUSE_TX;
67 } else if ((ld_abil & ADVERTISE_1000XPSE_ASYM) &&
68 (lp_abil & ADVERTISE_1000XPSE_ASYM)) {
69 status->pause |= (lp_abil & ADVERTISE_1000XPAUSE) ?
70 MLO_PAUSE_TX : 0;
71 status->pause |= (ld_abil & ADVERTISE_1000XPAUSE) ?
72 MLO_PAUSE_RX : 0;
73 } else {
74 status->pause = MLO_PAUSE_NONE;
75 }
76 }
77
sparx5_get_dev2g5_status(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_status * status)78 static int sparx5_get_dev2g5_status(struct sparx5 *sparx5,
79 struct sparx5_port *port,
80 struct sparx5_port_status *status)
81 {
82 u32 portno = port->portno;
83 u16 lp_adv, ld_adv;
84 u32 value;
85
86 /* Get PCS Link down sticky */
87 value = spx5_rd(sparx5, DEV2G5_PCS1G_STICKY(portno));
88 status->link_down = DEV2G5_PCS1G_STICKY_LINK_DOWN_STICKY_GET(value);
89 if (status->link_down) /* Clear the sticky */
90 spx5_wr(value, sparx5, DEV2G5_PCS1G_STICKY(portno));
91
92 /* Get both current Link and Sync status */
93 value = spx5_rd(sparx5, DEV2G5_PCS1G_LINK_STATUS(portno));
94 status->link = DEV2G5_PCS1G_LINK_STATUS_LINK_STATUS_GET(value) &&
95 DEV2G5_PCS1G_LINK_STATUS_SYNC_STATUS_GET(value);
96
97 if (port->conf.portmode == PHY_INTERFACE_MODE_1000BASEX)
98 status->speed = SPEED_1000;
99 else if (port->conf.portmode == PHY_INTERFACE_MODE_2500BASEX)
100 status->speed = SPEED_2500;
101
102 status->duplex = DUPLEX_FULL;
103
104 /* Get PCS ANEG status register */
105 value = spx5_rd(sparx5, DEV2G5_PCS1G_ANEG_STATUS(portno));
106
107 /* Aneg complete provides more information */
108 if (DEV2G5_PCS1G_ANEG_STATUS_ANEG_COMPLETE_GET(value)) {
109 lp_adv = DEV2G5_PCS1G_ANEG_STATUS_LP_ADV_ABILITY_GET(value);
110 if (port->conf.portmode == PHY_INTERFACE_MODE_SGMII) {
111 decode_sgmii_word(lp_adv, status);
112 } else {
113 value = spx5_rd(sparx5, DEV2G5_PCS1G_ANEG_CFG(portno));
114 ld_adv = DEV2G5_PCS1G_ANEG_CFG_ADV_ABILITY_GET(value);
115 decode_cl37_word(lp_adv, ld_adv, status);
116 }
117 }
118 return 0;
119 }
120
sparx5_get_sfi_status(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_status * status)121 static int sparx5_get_sfi_status(struct sparx5 *sparx5,
122 struct sparx5_port *port,
123 struct sparx5_port_status *status)
124 {
125 bool high_speed_dev = sparx5_is_baser(port->conf.portmode);
126 u32 portno = port->portno;
127 u32 value, dev, tinst;
128 void __iomem *inst;
129
130 if (!high_speed_dev) {
131 netdev_err(port->ndev, "error: low speed and SFI mode\n");
132 return -EINVAL;
133 }
134
135 dev = sparx5_to_high_dev(sparx5, portno);
136 tinst = sparx5_port_dev_index(sparx5, portno);
137 inst = spx5_inst_get(sparx5, dev, tinst);
138
139 value = spx5_inst_rd(inst, DEV10G_MAC_TX_MONITOR_STICKY(0));
140 if (value != DEV10G_MAC_TX_MONITOR_STICKY_IDLE_STATE_STICKY) {
141 /* The link is or has been down. Clear the sticky bit */
142 status->link_down = 1;
143 spx5_inst_wr(0xffffffff, inst, DEV10G_MAC_TX_MONITOR_STICKY(0));
144 value = spx5_inst_rd(inst, DEV10G_MAC_TX_MONITOR_STICKY(0));
145 }
146 status->link = (value == DEV10G_MAC_TX_MONITOR_STICKY_IDLE_STATE_STICKY);
147 status->duplex = DUPLEX_FULL;
148 if (port->conf.portmode == PHY_INTERFACE_MODE_5GBASER)
149 status->speed = SPEED_5000;
150 else if (port->conf.portmode == PHY_INTERFACE_MODE_10GBASER)
151 status->speed = SPEED_10000;
152 else
153 status->speed = SPEED_25000;
154
155 return 0;
156 }
157
158 /* Get link status of 1000Base-X/in-band and SFI ports.
159 */
sparx5_get_port_status(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_status * status)160 int sparx5_get_port_status(struct sparx5 *sparx5,
161 struct sparx5_port *port,
162 struct sparx5_port_status *status)
163 {
164 memset(status, 0, sizeof(*status));
165 status->speed = port->conf.speed;
166 if (port->conf.power_down) {
167 status->link = false;
168 return 0;
169 }
170 switch (port->conf.portmode) {
171 case PHY_INTERFACE_MODE_SGMII:
172 case PHY_INTERFACE_MODE_QSGMII:
173 case PHY_INTERFACE_MODE_1000BASEX:
174 case PHY_INTERFACE_MODE_2500BASEX:
175 return sparx5_get_dev2g5_status(sparx5, port, status);
176 case PHY_INTERFACE_MODE_5GBASER:
177 case PHY_INTERFACE_MODE_10GBASER:
178 case PHY_INTERFACE_MODE_25GBASER:
179 return sparx5_get_sfi_status(sparx5, port, status);
180 case PHY_INTERFACE_MODE_NA:
181 return 0;
182 default:
183 netdev_err(port->ndev, "Status not supported");
184 return -ENODEV;
185 }
186 return 0;
187 }
188
sparx5_port_error(struct sparx5_port * port,struct sparx5_port_config * conf,enum port_error errtype)189 static int sparx5_port_error(struct sparx5_port *port,
190 struct sparx5_port_config *conf,
191 enum port_error errtype)
192 {
193 switch (errtype) {
194 case SPX5_PERR_SPEED:
195 netdev_err(port->ndev,
196 "Interface does not support speed: %u: for %s\n",
197 conf->speed, phy_modes(conf->portmode));
198 break;
199 case SPX5_PERR_IFTYPE:
200 netdev_err(port->ndev,
201 "Switch port does not support interface type: %s\n",
202 phy_modes(conf->portmode));
203 break;
204 default:
205 netdev_err(port->ndev,
206 "Interface configuration error\n");
207 }
208
209 return -EINVAL;
210 }
211
sparx5_port_verify_speed(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)212 static int sparx5_port_verify_speed(struct sparx5 *sparx5,
213 struct sparx5_port *port,
214 struct sparx5_port_config *conf)
215 {
216 const struct sparx5_ops *ops = sparx5->data->ops;
217
218 if ((ops->is_port_2g5(port->portno) &&
219 conf->speed > SPEED_2500) ||
220 (ops->is_port_5g(port->portno) &&
221 conf->speed > SPEED_5000) ||
222 (ops->is_port_10g(port->portno) &&
223 conf->speed > SPEED_10000))
224 return sparx5_port_error(port, conf, SPX5_PERR_SPEED);
225
226 switch (conf->portmode) {
227 case PHY_INTERFACE_MODE_NA:
228 return -EINVAL;
229 case PHY_INTERFACE_MODE_1000BASEX:
230 if (conf->speed != SPEED_1000 ||
231 ops->is_port_2g5(port->portno))
232 return sparx5_port_error(port, conf, SPX5_PERR_SPEED);
233 if (ops->is_port_2g5(port->portno))
234 return sparx5_port_error(port, conf, SPX5_PERR_IFTYPE);
235 break;
236 case PHY_INTERFACE_MODE_2500BASEX:
237 if (conf->speed != SPEED_2500 ||
238 ops->is_port_2g5(port->portno))
239 return sparx5_port_error(port, conf, SPX5_PERR_SPEED);
240 break;
241 case PHY_INTERFACE_MODE_QSGMII:
242 if (port->portno > 47)
243 return sparx5_port_error(port, conf, SPX5_PERR_IFTYPE);
244 fallthrough;
245 case PHY_INTERFACE_MODE_SGMII:
246 if (conf->speed != SPEED_1000 &&
247 conf->speed != SPEED_100 &&
248 conf->speed != SPEED_10 &&
249 conf->speed != SPEED_2500)
250 return sparx5_port_error(port, conf, SPX5_PERR_SPEED);
251 break;
252 case PHY_INTERFACE_MODE_5GBASER:
253 case PHY_INTERFACE_MODE_10GBASER:
254 case PHY_INTERFACE_MODE_25GBASER:
255 if ((conf->speed != SPEED_5000 &&
256 conf->speed != SPEED_10000 &&
257 conf->speed != SPEED_25000))
258 return sparx5_port_error(port, conf, SPX5_PERR_SPEED);
259 break;
260 default:
261 return sparx5_port_error(port, conf, SPX5_PERR_IFTYPE);
262 }
263 return 0;
264 }
265
sparx5_dev_change(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)266 static bool sparx5_dev_change(struct sparx5 *sparx5,
267 struct sparx5_port *port,
268 struct sparx5_port_config *conf)
269 {
270 return sparx5_is_baser(port->conf.portmode) ^
271 sparx5_is_baser(conf->portmode);
272 }
273
sparx5_port_flush_poll(struct sparx5 * sparx5,u32 portno)274 static int sparx5_port_flush_poll(struct sparx5 *sparx5, u32 portno)
275 {
276 u32 value, resource, prio, delay_cnt = 0;
277 bool poll_src = true;
278 char *mem = "";
279
280 /* Resource == 0: Memory tracked per source (SRC-MEM)
281 * Resource == 1: Frame references tracked per source (SRC-REF)
282 * Resource == 2: Memory tracked per destination (DST-MEM)
283 * Resource == 3: Frame references tracked per destination. (DST-REF)
284 */
285 while (1) {
286 bool empty = true;
287
288 for (resource = 0; resource < (poll_src ? 2 : 1); resource++) {
289 u32 base;
290
291 base = (resource == 0 ? 2048 : 0) + SPX5_PRIOS * portno;
292 for (prio = 0; prio < SPX5_PRIOS; prio++) {
293 value = spx5_rd(sparx5,
294 QRES_RES_STAT(base + prio));
295 if (value) {
296 mem = resource == 0 ?
297 "DST-MEM" : "SRC-MEM";
298 empty = false;
299 }
300 }
301 }
302
303 if (empty)
304 break;
305
306 if (delay_cnt++ == 2000) {
307 dev_err(sparx5->dev,
308 "Flush timeout port %u. %s queue not empty\n",
309 portno, mem);
310 return -EINVAL;
311 }
312
313 usleep_range(SPX5_WAIT_US, SPX5_WAIT_MAX_US);
314 }
315 return 0;
316 }
317
sparx5_port_disable(struct sparx5 * sparx5,struct sparx5_port * port,bool high_spd_dev)318 static int sparx5_port_disable(struct sparx5 *sparx5, struct sparx5_port *port, bool high_spd_dev)
319 {
320 u32 tinst = high_spd_dev ?
321 sparx5_port_dev_index(sparx5, port->portno) : port->portno;
322 u32 dev = high_spd_dev ?
323 sparx5_to_high_dev(sparx5, port->portno) : TARGET_DEV2G5;
324 void __iomem *devinst = spx5_inst_get(sparx5, dev, tinst);
325 const struct sparx5_ops *ops = sparx5->data->ops;
326 u32 spd = port->conf.speed;
327 u32 spd_prm;
328 int err;
329
330 if (high_spd_dev) {
331 /* 1: Reset the PCS Rx clock domain */
332 spx5_inst_rmw(DEV10G_DEV_RST_CTRL_PCS_RX_RST,
333 DEV10G_DEV_RST_CTRL_PCS_RX_RST,
334 devinst,
335 DEV10G_DEV_RST_CTRL(0));
336
337 /* 2: Disable MAC frame reception */
338 spx5_inst_rmw(0,
339 DEV10G_MAC_ENA_CFG_RX_ENA,
340 devinst,
341 DEV10G_MAC_ENA_CFG(0));
342 } else {
343 /* 1: Reset the PCS Rx clock domain */
344 spx5_inst_rmw(DEV2G5_DEV_RST_CTRL_PCS_RX_RST,
345 DEV2G5_DEV_RST_CTRL_PCS_RX_RST,
346 devinst,
347 DEV2G5_DEV_RST_CTRL(0));
348 /* 2: Disable MAC frame reception */
349 spx5_inst_rmw(0,
350 DEV2G5_MAC_ENA_CFG_RX_ENA,
351 devinst,
352 DEV2G5_MAC_ENA_CFG(0));
353 }
354 /* 3: Disable traffic being sent to or from switch port->portno */
355 spx5_rmw(0,
356 QFWD_SWITCH_PORT_MODE_PORT_ENA,
357 sparx5,
358 QFWD_SWITCH_PORT_MODE(port->portno));
359
360 /* 4: Disable dequeuing from the egress queues */
361 spx5_rmw(HSCH_PORT_MODE_DEQUEUE_DIS,
362 HSCH_PORT_MODE_DEQUEUE_DIS,
363 sparx5,
364 HSCH_PORT_MODE(port->portno));
365
366 /* 5: Disable Flowcontrol */
367 spx5_rmw(QSYS_PAUSE_CFG_PAUSE_STOP_SET(0xFFF - 1),
368 QSYS_PAUSE_CFG_PAUSE_STOP,
369 sparx5,
370 QSYS_PAUSE_CFG(port->portno));
371
372 spd_prm = spd == SPEED_10 ? 1000 : spd == SPEED_100 ? 100 : 10;
373 /* 6: Wait while the last frame is exiting the queues */
374 usleep_range(8 * spd_prm, 10 * spd_prm);
375
376 /* 7: Flush the queues associated with the port->portno */
377 spx5_rmw(HSCH_FLUSH_CTRL_FLUSH_PORT_SET(port->portno) |
378 HSCH_FLUSH_CTRL_FLUSH_DST_SET(1) |
379 HSCH_FLUSH_CTRL_FLUSH_SRC_SET(1) |
380 HSCH_FLUSH_CTRL_FLUSH_ENA_SET(1),
381 HSCH_FLUSH_CTRL_FLUSH_PORT |
382 HSCH_FLUSH_CTRL_FLUSH_DST |
383 HSCH_FLUSH_CTRL_FLUSH_SRC |
384 HSCH_FLUSH_CTRL_FLUSH_ENA,
385 sparx5,
386 HSCH_FLUSH_CTRL);
387
388 /* 8: Enable dequeuing from the egress queues */
389 spx5_rmw(0,
390 HSCH_PORT_MODE_DEQUEUE_DIS,
391 sparx5,
392 HSCH_PORT_MODE(port->portno));
393
394 /* 9: Wait until flushing is complete */
395 err = sparx5_port_flush_poll(sparx5, port->portno);
396 if (err)
397 return err;
398
399 /* 10: Reset the MAC clock domain */
400 if (high_spd_dev) {
401 spx5_inst_rmw(DEV10G_DEV_RST_CTRL_PCS_TX_RST_SET(1) |
402 DEV10G_DEV_RST_CTRL_MAC_RX_RST_SET(1) |
403 DEV10G_DEV_RST_CTRL_MAC_TX_RST_SET(1),
404 DEV10G_DEV_RST_CTRL_PCS_TX_RST |
405 DEV10G_DEV_RST_CTRL_MAC_RX_RST |
406 DEV10G_DEV_RST_CTRL_MAC_TX_RST,
407 devinst,
408 DEV10G_DEV_RST_CTRL(0));
409
410 } else {
411 spx5_inst_rmw(DEV2G5_DEV_RST_CTRL_SPEED_SEL_SET(3) |
412 DEV2G5_DEV_RST_CTRL_PCS_TX_RST_SET(1) |
413 DEV2G5_DEV_RST_CTRL_PCS_RX_RST_SET(1) |
414 DEV2G5_DEV_RST_CTRL_MAC_TX_RST_SET(1) |
415 DEV2G5_DEV_RST_CTRL_MAC_RX_RST_SET(1),
416 DEV2G5_DEV_RST_CTRL_SPEED_SEL |
417 DEV2G5_DEV_RST_CTRL_PCS_TX_RST |
418 DEV2G5_DEV_RST_CTRL_PCS_RX_RST |
419 DEV2G5_DEV_RST_CTRL_MAC_TX_RST |
420 DEV2G5_DEV_RST_CTRL_MAC_RX_RST,
421 devinst,
422 DEV2G5_DEV_RST_CTRL(0));
423 }
424 /* 11: Clear flushing */
425 spx5_rmw(HSCH_FLUSH_CTRL_FLUSH_PORT_SET(port->portno) |
426 HSCH_FLUSH_CTRL_FLUSH_ENA_SET(0),
427 HSCH_FLUSH_CTRL_FLUSH_PORT |
428 HSCH_FLUSH_CTRL_FLUSH_ENA,
429 sparx5,
430 HSCH_FLUSH_CTRL);
431
432 if (high_spd_dev) {
433 u32 pcs = sparx5_to_pcs_dev(sparx5, port->portno);
434 void __iomem *pcsinst = spx5_inst_get(sparx5, pcs, tinst);
435
436 /* 12: Disable 5G/10G/25 BaseR PCS */
437 spx5_inst_rmw(PCS10G_BR_PCS_CFG_PCS_ENA_SET(0),
438 PCS10G_BR_PCS_CFG_PCS_ENA,
439 pcsinst,
440 PCS10G_BR_PCS_CFG(0));
441
442 if (ops->is_port_25g(port->portno))
443 /* Disable 25G PCS */
444 spx5_rmw(DEV25G_PCS25G_CFG_PCS25G_ENA_SET(0),
445 DEV25G_PCS25G_CFG_PCS25G_ENA,
446 sparx5,
447 DEV25G_PCS25G_CFG(tinst));
448 } else {
449 /* 12: Disable 1G PCS */
450 spx5_rmw(DEV2G5_PCS1G_CFG_PCS_ENA_SET(0),
451 DEV2G5_PCS1G_CFG_PCS_ENA,
452 sparx5,
453 DEV2G5_PCS1G_CFG(port->portno));
454 }
455
456 /* The port is now flushed and disabled */
457 return 0;
458 }
459
sparx5_port_fifo_sz(struct sparx5 * sparx5,u32 portno,u32 speed)460 static int sparx5_port_fifo_sz(struct sparx5 *sparx5,
461 u32 portno, u32 speed)
462 {
463 u32 sys_clk = sparx5_clk_period(sparx5->coreclock);
464 const u32 taxi_dist[SPX5_PORTS_ALL] = {
465 6, 8, 10, 6, 8, 10, 6, 8, 10, 6, 8, 10,
466 4, 4, 4, 4,
467 11, 12, 13, 14, 15, 16, 17, 18,
468 11, 12, 13, 14, 15, 16, 17, 18,
469 11, 12, 13, 14, 15, 16, 17, 18,
470 11, 12, 13, 14, 15, 16, 17, 18,
471 4, 6, 8, 4, 6, 8, 6, 8,
472 2, 2, 2, 2, 2, 2, 2, 4, 2
473 };
474 u32 mac_per = 6400, tmp1, tmp2, tmp3;
475 u32 fifo_width = 16;
476 u32 mac_width = 8;
477 u32 addition = 0;
478
479 if (!is_sparx5(sparx5))
480 return 0;
481
482 switch (speed) {
483 case SPEED_25000:
484 return 0;
485 case SPEED_10000:
486 mac_per = 6400;
487 mac_width = 8;
488 addition = 1;
489 break;
490 case SPEED_5000:
491 mac_per = 12800;
492 mac_width = 8;
493 addition = 0;
494 break;
495 case SPEED_2500:
496 mac_per = 3200;
497 mac_width = 1;
498 addition = 0;
499 break;
500 case SPEED_1000:
501 mac_per = 8000;
502 mac_width = 1;
503 addition = 0;
504 break;
505 case SPEED_100:
506 case SPEED_10:
507 return 1;
508 default:
509 break;
510 }
511
512 tmp1 = 1000 * mac_width / fifo_width;
513 tmp2 = 3000 + ((12000 + 2 * taxi_dist[portno] * 1000)
514 * sys_clk / mac_per);
515 tmp3 = tmp1 * tmp2 / 1000;
516 return (tmp3 + 2000 + 999) / 1000 + addition;
517 }
518
519 /* Configure port muxing:
520 * QSGMII: 4x2G5 devices
521 */
sparx5_port_mux_set(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)522 int sparx5_port_mux_set(struct sparx5 *sparx5, struct sparx5_port *port,
523 struct sparx5_port_config *conf)
524 {
525 u32 portno = port->portno;
526 u32 inst;
527
528 if (port->conf.portmode == conf->portmode)
529 return 0; /* Nothing to do */
530
531 switch (conf->portmode) {
532 case PHY_INTERFACE_MODE_QSGMII: /* QSGMII: 4x2G5 devices. Mode Q' */
533 inst = (portno - portno % 4) / 4;
534 spx5_rmw(BIT(inst),
535 BIT(inst),
536 sparx5,
537 PORT_CONF_QSGMII_ENA);
538
539 if ((portno / 4 % 2) == 0) {
540 /* Affects d0-d3,d8-d11..d40-d43 */
541 spx5_rmw(PORT_CONF_USGMII_CFG_BYPASS_SCRAM_SET(1) |
542 PORT_CONF_USGMII_CFG_BYPASS_DESCRAM_SET(1) |
543 PORT_CONF_USGMII_CFG_QUAD_MODE_SET(1),
544 PORT_CONF_USGMII_CFG_BYPASS_SCRAM |
545 PORT_CONF_USGMII_CFG_BYPASS_DESCRAM |
546 PORT_CONF_USGMII_CFG_QUAD_MODE,
547 sparx5,
548 PORT_CONF_USGMII_CFG((portno / 8)));
549 }
550 break;
551 default:
552 break;
553 }
554 return 0;
555 }
556
sparx5_port_max_tags_set(struct sparx5 * sparx5,struct sparx5_port * port)557 static int sparx5_port_max_tags_set(struct sparx5 *sparx5,
558 struct sparx5_port *port)
559 {
560 enum sparx5_port_max_tags max_tags = port->max_vlan_tags;
561 int tag_ct = max_tags == SPX5_PORT_MAX_TAGS_ONE ? 1 :
562 max_tags == SPX5_PORT_MAX_TAGS_TWO ? 2 : 0;
563 bool dtag = max_tags == SPX5_PORT_MAX_TAGS_TWO;
564 enum sparx5_vlan_port_type vlan_type = port->vlan_type;
565 bool dotag = max_tags != SPX5_PORT_MAX_TAGS_NONE;
566 u32 dev = sparx5_to_high_dev(sparx5, port->portno);
567 u32 tinst = sparx5_port_dev_index(sparx5, port->portno);
568 void __iomem *inst = spx5_inst_get(sparx5, dev, tinst);
569 const struct sparx5_ops *ops = sparx5->data->ops;
570 u32 etype;
571
572 etype = (vlan_type == SPX5_VLAN_PORT_TYPE_S_CUSTOM ?
573 port->custom_etype :
574 vlan_type == SPX5_VLAN_PORT_TYPE_C ?
575 SPX5_ETYPE_TAG_C : SPX5_ETYPE_TAG_S);
576
577 spx5_wr(DEV2G5_MAC_TAGS_CFG_TAG_ID_SET(etype) |
578 DEV2G5_MAC_TAGS_CFG_PB_ENA_SET(dtag) |
579 DEV2G5_MAC_TAGS_CFG_VLAN_AWR_ENA_SET(dotag) |
580 DEV2G5_MAC_TAGS_CFG_VLAN_LEN_AWR_ENA_SET(dotag),
581 sparx5,
582 DEV2G5_MAC_TAGS_CFG(port->portno));
583
584 if (ops->is_port_2g5(port->portno))
585 return 0;
586
587 spx5_inst_rmw(DEV10G_MAC_TAGS_CFG_TAG_ID_SET(etype) |
588 DEV10G_MAC_TAGS_CFG_TAG_ENA_SET(dotag),
589 DEV10G_MAC_TAGS_CFG_TAG_ID |
590 DEV10G_MAC_TAGS_CFG_TAG_ENA,
591 inst,
592 DEV10G_MAC_TAGS_CFG(0, 0));
593
594 spx5_inst_rmw(DEV10G_MAC_NUM_TAGS_CFG_NUM_TAGS_SET(tag_ct),
595 DEV10G_MAC_NUM_TAGS_CFG_NUM_TAGS,
596 inst,
597 DEV10G_MAC_NUM_TAGS_CFG(0));
598
599 spx5_inst_rmw(DEV10G_MAC_MAXLEN_CFG_MAX_LEN_TAG_CHK_SET(dotag),
600 DEV10G_MAC_MAXLEN_CFG_MAX_LEN_TAG_CHK,
601 inst,
602 DEV10G_MAC_MAXLEN_CFG(0));
603 return 0;
604 }
605
sparx5_port_fwd_urg(struct sparx5 * sparx5,u32 speed)606 int sparx5_port_fwd_urg(struct sparx5 *sparx5, u32 speed)
607 {
608 u32 clk_period_ps = 1600; /* 625Mhz for now */
609 u32 urg = 672000;
610
611 switch (speed) {
612 case SPEED_10:
613 case SPEED_100:
614 case SPEED_1000:
615 urg = 672000;
616 break;
617 case SPEED_2500:
618 urg = 270000;
619 break;
620 case SPEED_5000:
621 urg = 135000;
622 break;
623 case SPEED_10000:
624 urg = 67200;
625 break;
626 case SPEED_25000:
627 urg = 27000;
628 break;
629 }
630 return urg / clk_period_ps - 1;
631 }
632
sparx5_wm_enc(u16 value)633 static u16 sparx5_wm_enc(u16 value)
634 {
635 if (value >= 2048)
636 return 2048 + value / 16;
637
638 return value;
639 }
640
sparx5_port_fc_setup(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)641 static int sparx5_port_fc_setup(struct sparx5 *sparx5,
642 struct sparx5_port *port,
643 struct sparx5_port_config *conf)
644 {
645 bool fc_obey = conf->pause & MLO_PAUSE_RX ? 1 : 0;
646 u32 pause_stop = 0xFFF - 1; /* FC gen disabled */
647
648 if (conf->pause & MLO_PAUSE_TX)
649 pause_stop = sparx5_wm_enc(4 * (ETH_MAXLEN /
650 SPX5_BUFFER_CELL_SZ));
651
652 /* Set HDX flowcontrol */
653 spx5_rmw(DSM_MAC_CFG_HDX_BACKPREASSURE_SET(conf->duplex == DUPLEX_HALF),
654 DSM_MAC_CFG_HDX_BACKPREASSURE,
655 sparx5,
656 DSM_MAC_CFG(port->portno));
657
658 /* Obey flowcontrol */
659 spx5_rmw(DSM_RX_PAUSE_CFG_RX_PAUSE_EN_SET(fc_obey),
660 DSM_RX_PAUSE_CFG_RX_PAUSE_EN,
661 sparx5,
662 DSM_RX_PAUSE_CFG(port->portno));
663
664 /* Disable forward pressure */
665 spx5_rmw(QSYS_FWD_PRESSURE_FWD_PRESSURE_DIS_SET(fc_obey),
666 QSYS_FWD_PRESSURE_FWD_PRESSURE_DIS,
667 sparx5,
668 QSYS_FWD_PRESSURE(port->portno));
669
670 /* Generate pause frames */
671 spx5_rmw(QSYS_PAUSE_CFG_PAUSE_STOP_SET(pause_stop),
672 QSYS_PAUSE_CFG_PAUSE_STOP,
673 sparx5,
674 QSYS_PAUSE_CFG(port->portno));
675
676 return 0;
677 }
678
sparx5_get_aneg_word(struct sparx5_port_config * conf)679 static u16 sparx5_get_aneg_word(struct sparx5_port_config *conf)
680 {
681 if (conf->portmode == PHY_INTERFACE_MODE_1000BASEX) /* cl-37 aneg */
682 return (conf->pause_adv | ADVERTISE_LPACK | ADVERTISE_1000XFULL);
683 else
684 return 1; /* Enable SGMII Aneg */
685 }
686
sparx5_serdes_set(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)687 int sparx5_serdes_set(struct sparx5 *sparx5,
688 struct sparx5_port *port,
689 struct sparx5_port_config *conf)
690 {
691 int portmode, err, speed = conf->speed;
692
693 if (conf->portmode == PHY_INTERFACE_MODE_QSGMII &&
694 ((port->portno % 4) != 0)) {
695 return 0;
696 }
697 if (sparx5_is_baser(conf->portmode)) {
698 if (conf->portmode == PHY_INTERFACE_MODE_25GBASER)
699 speed = SPEED_25000;
700 else if (conf->portmode == PHY_INTERFACE_MODE_10GBASER)
701 speed = SPEED_10000;
702 else
703 speed = SPEED_5000;
704 }
705
706 err = phy_set_media(port->serdes, conf->media);
707 if (err)
708 return err;
709 if (speed > 0) {
710 err = phy_set_speed(port->serdes, speed);
711 if (err)
712 return err;
713 }
714 if (conf->serdes_reset) {
715 err = phy_reset(port->serdes);
716 if (err)
717 return err;
718 }
719
720 /* Configure SerDes with port parameters
721 * For BaseR, the serdes driver supports 10GGBASE-R and speed 5G/10G/25G
722 */
723 portmode = conf->portmode;
724 if (sparx5_is_baser(conf->portmode))
725 portmode = PHY_INTERFACE_MODE_10GBASER;
726 err = phy_set_mode_ext(port->serdes, PHY_MODE_ETHERNET, portmode);
727 if (err)
728 return err;
729 conf->serdes_reset = false;
730 return err;
731 }
732
sparx5_port_pcs_low_set(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)733 static int sparx5_port_pcs_low_set(struct sparx5 *sparx5,
734 struct sparx5_port *port,
735 struct sparx5_port_config *conf)
736 {
737 bool sgmii = false, inband_aneg = false;
738 int err;
739
740 if (conf->inband) {
741 if (conf->portmode == PHY_INTERFACE_MODE_SGMII ||
742 conf->portmode == PHY_INTERFACE_MODE_QSGMII)
743 inband_aneg = true; /* Cisco-SGMII in-band-aneg */
744 else if (conf->portmode == PHY_INTERFACE_MODE_1000BASEX &&
745 conf->autoneg)
746 inband_aneg = true; /* Clause-37 in-band-aneg */
747
748 err = sparx5_serdes_set(sparx5, port, conf);
749 if (err)
750 return -EINVAL;
751 } else {
752 sgmii = true; /* Phy is connected to the MAC */
753 }
754
755 /* Choose SGMII or 1000BaseX/2500BaseX PCS mode */
756 spx5_rmw(DEV2G5_PCS1G_MODE_CFG_SGMII_MODE_ENA_SET(sgmii),
757 DEV2G5_PCS1G_MODE_CFG_SGMII_MODE_ENA,
758 sparx5,
759 DEV2G5_PCS1G_MODE_CFG(port->portno));
760
761 /* Enable PCS */
762 spx5_wr(DEV2G5_PCS1G_CFG_PCS_ENA_SET(1),
763 sparx5,
764 DEV2G5_PCS1G_CFG(port->portno));
765
766 if (inband_aneg) {
767 u16 abil = sparx5_get_aneg_word(conf);
768
769 /* Enable in-band aneg */
770 spx5_wr(DEV2G5_PCS1G_ANEG_CFG_ADV_ABILITY_SET(abil) |
771 DEV2G5_PCS1G_ANEG_CFG_SW_RESOLVE_ENA_SET(1) |
772 DEV2G5_PCS1G_ANEG_CFG_ANEG_ENA_SET(1) |
773 DEV2G5_PCS1G_ANEG_CFG_ANEG_RESTART_ONE_SHOT_SET(1),
774 sparx5,
775 DEV2G5_PCS1G_ANEG_CFG(port->portno));
776 } else {
777 spx5_wr(0, sparx5, DEV2G5_PCS1G_ANEG_CFG(port->portno));
778 }
779
780 /* Take PCS out of reset */
781 spx5_rmw(DEV2G5_DEV_RST_CTRL_SPEED_SEL_SET(2) |
782 DEV2G5_DEV_RST_CTRL_PCS_TX_RST_SET(0) |
783 DEV2G5_DEV_RST_CTRL_PCS_RX_RST_SET(0),
784 DEV2G5_DEV_RST_CTRL_SPEED_SEL |
785 DEV2G5_DEV_RST_CTRL_PCS_TX_RST |
786 DEV2G5_DEV_RST_CTRL_PCS_RX_RST,
787 sparx5,
788 DEV2G5_DEV_RST_CTRL(port->portno));
789
790 return 0;
791 }
792
sparx5_port_pcs_high_set(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)793 static int sparx5_port_pcs_high_set(struct sparx5 *sparx5,
794 struct sparx5_port *port,
795 struct sparx5_port_config *conf)
796 {
797 u32 clk_spd = conf->portmode == PHY_INTERFACE_MODE_5GBASER ? 1 : 0;
798 u32 pix = sparx5_port_dev_index(sparx5, port->portno);
799 u32 dev = sparx5_to_high_dev(sparx5, port->portno);
800 u32 pcs = sparx5_to_pcs_dev(sparx5, port->portno);
801 void __iomem *devinst;
802 void __iomem *pcsinst;
803 int err;
804
805 devinst = spx5_inst_get(sparx5, dev, pix);
806 pcsinst = spx5_inst_get(sparx5, pcs, pix);
807
808 /* SFI : No in-band-aneg. Speeds 5G/10G/25G */
809 err = sparx5_serdes_set(sparx5, port, conf);
810 if (err)
811 return -EINVAL;
812 if (conf->portmode == PHY_INTERFACE_MODE_25GBASER) {
813 /* Enable PCS for 25G device, speed 25G */
814 spx5_rmw(DEV25G_PCS25G_CFG_PCS25G_ENA_SET(1),
815 DEV25G_PCS25G_CFG_PCS25G_ENA,
816 sparx5,
817 DEV25G_PCS25G_CFG(pix));
818 } else {
819 /* Enable PCS for 5G/10G/25G devices, speed 5G/10G */
820 spx5_inst_rmw(PCS10G_BR_PCS_CFG_PCS_ENA_SET(1),
821 PCS10G_BR_PCS_CFG_PCS_ENA,
822 pcsinst,
823 PCS10G_BR_PCS_CFG(0));
824 }
825
826 /* Enable 5G/10G/25G MAC module */
827 spx5_inst_wr(DEV10G_MAC_ENA_CFG_RX_ENA_SET(1) |
828 DEV10G_MAC_ENA_CFG_TX_ENA_SET(1),
829 devinst,
830 DEV10G_MAC_ENA_CFG(0));
831
832 /* Take the device out of reset */
833 spx5_inst_rmw(DEV10G_DEV_RST_CTRL_PCS_RX_RST_SET(0) |
834 DEV10G_DEV_RST_CTRL_PCS_TX_RST_SET(0) |
835 DEV10G_DEV_RST_CTRL_MAC_RX_RST_SET(0) |
836 DEV10G_DEV_RST_CTRL_MAC_TX_RST_SET(0) |
837 DEV10G_DEV_RST_CTRL_SPEED_SEL_SET(clk_spd),
838 DEV10G_DEV_RST_CTRL_PCS_RX_RST |
839 DEV10G_DEV_RST_CTRL_PCS_TX_RST |
840 DEV10G_DEV_RST_CTRL_MAC_RX_RST |
841 DEV10G_DEV_RST_CTRL_MAC_TX_RST |
842 DEV10G_DEV_RST_CTRL_SPEED_SEL,
843 devinst,
844 DEV10G_DEV_RST_CTRL(0));
845
846 return 0;
847 }
848
849 /* Switch between 1G/2500 and 5G/10G/25G devices */
sparx5_dev_switch(struct sparx5 * sparx5,int port,bool hsd)850 static void sparx5_dev_switch(struct sparx5 *sparx5, int port, bool hsd)
851 {
852 const struct sparx5_ops *ops = sparx5->data->ops;
853 int bt_indx;
854
855 bt_indx = BIT(ops->get_port_dev_bit(sparx5, port));
856
857 if (ops->is_port_5g(port)) {
858 spx5_rmw(hsd ? 0 : bt_indx,
859 bt_indx,
860 sparx5,
861 PORT_CONF_DEV5G_MODES);
862 } else if (ops->is_port_10g(port)) {
863 spx5_rmw(hsd ? 0 : bt_indx,
864 bt_indx,
865 sparx5,
866 PORT_CONF_DEV10G_MODES);
867 } else if (ops->is_port_25g(port)) {
868 spx5_rmw(hsd ? 0 : bt_indx,
869 bt_indx,
870 sparx5,
871 PORT_CONF_DEV25G_MODES);
872 }
873 }
874
875 /* Configure speed/duplex dependent registers */
sparx5_port_config_low_set(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)876 static int sparx5_port_config_low_set(struct sparx5 *sparx5,
877 struct sparx5_port *port,
878 struct sparx5_port_config *conf)
879 {
880 u32 clk_spd, gig_mode, tx_gap, hdx_gap_1, hdx_gap_2;
881 bool fdx = conf->duplex == DUPLEX_FULL;
882 int spd = conf->speed;
883
884 clk_spd = spd == SPEED_10 ? 0 : spd == SPEED_100 ? 1 : 2;
885 gig_mode = spd == SPEED_1000 || spd == SPEED_2500;
886 tx_gap = spd == SPEED_1000 ? 4 : fdx ? 6 : 5;
887 hdx_gap_1 = spd == SPEED_1000 ? 0 : spd == SPEED_100 ? 1 : 2;
888 hdx_gap_2 = spd == SPEED_1000 ? 0 : spd == SPEED_100 ? 4 : 1;
889
890 /* GIG/FDX mode */
891 spx5_rmw(DEV2G5_MAC_MODE_CFG_GIGA_MODE_ENA_SET(gig_mode) |
892 DEV2G5_MAC_MODE_CFG_FDX_ENA_SET(fdx),
893 DEV2G5_MAC_MODE_CFG_GIGA_MODE_ENA |
894 DEV2G5_MAC_MODE_CFG_FDX_ENA,
895 sparx5,
896 DEV2G5_MAC_MODE_CFG(port->portno));
897
898 /* Set MAC IFG Gaps */
899 spx5_wr(DEV2G5_MAC_IFG_CFG_TX_IFG_SET(tx_gap) |
900 DEV2G5_MAC_IFG_CFG_RX_IFG1_SET(hdx_gap_1) |
901 DEV2G5_MAC_IFG_CFG_RX_IFG2_SET(hdx_gap_2),
902 sparx5,
903 DEV2G5_MAC_IFG_CFG(port->portno));
904
905 /* Disabling frame aging when in HDX (due to HDX issue) */
906 spx5_rmw(HSCH_PORT_MODE_AGE_DIS_SET(fdx == 0),
907 HSCH_PORT_MODE_AGE_DIS,
908 sparx5,
909 HSCH_PORT_MODE(port->portno));
910
911 /* Enable MAC module */
912 spx5_wr(DEV2G5_MAC_ENA_CFG_RX_ENA |
913 DEV2G5_MAC_ENA_CFG_TX_ENA,
914 sparx5,
915 DEV2G5_MAC_ENA_CFG(port->portno));
916
917 /* Select speed and take MAC out of reset */
918 spx5_rmw(DEV2G5_DEV_RST_CTRL_SPEED_SEL_SET(clk_spd) |
919 DEV2G5_DEV_RST_CTRL_MAC_TX_RST_SET(0) |
920 DEV2G5_DEV_RST_CTRL_MAC_RX_RST_SET(0),
921 DEV2G5_DEV_RST_CTRL_SPEED_SEL |
922 DEV2G5_DEV_RST_CTRL_MAC_TX_RST |
923 DEV2G5_DEV_RST_CTRL_MAC_RX_RST,
924 sparx5,
925 DEV2G5_DEV_RST_CTRL(port->portno));
926
927 /* Enable PHAD_CTRL for better timestamping */
928 if (!is_sparx5(sparx5)) {
929 for (int i = 0; i < 2; ++i) {
930 /* Divide the port clock by three for the two
931 * phase detection registers.
932 */
933 spx5_rmw(DEV2G5_PHAD_CTRL_DIV_CFG_SET(3) |
934 DEV2G5_PHAD_CTRL_PHAD_ENA_SET(1),
935 DEV2G5_PHAD_CTRL_DIV_CFG |
936 DEV2G5_PHAD_CTRL_PHAD_ENA,
937 sparx5, DEV2G5_PHAD_CTRL(port->portno, i));
938 }
939 }
940
941 return 0;
942 }
943
sparx5_port_pcs_set(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)944 int sparx5_port_pcs_set(struct sparx5 *sparx5,
945 struct sparx5_port *port,
946 struct sparx5_port_config *conf)
947
948 {
949 bool high_speed_dev = sparx5_is_baser(conf->portmode);
950 int err;
951
952 if (sparx5_dev_change(sparx5, port, conf)) {
953 /* switch device */
954 sparx5_dev_switch(sparx5, port->portno, high_speed_dev);
955
956 /* Disable the not-in-use device */
957 err = sparx5_port_disable(sparx5, port, !high_speed_dev);
958 if (err)
959 return err;
960 }
961 /* Disable the port before re-configuring */
962 err = sparx5_port_disable(sparx5, port, high_speed_dev);
963 if (err)
964 return -EINVAL;
965
966 if (high_speed_dev)
967 err = sparx5_port_pcs_high_set(sparx5, port, conf);
968 else
969 err = sparx5_port_pcs_low_set(sparx5, port, conf);
970
971 if (err)
972 return -EINVAL;
973
974 if (conf->inband) {
975 /* Enable/disable 1G counters in ASM */
976 spx5_rmw(ASM_PORT_CFG_CSC_STAT_DIS_SET(high_speed_dev),
977 ASM_PORT_CFG_CSC_STAT_DIS,
978 sparx5,
979 ASM_PORT_CFG(port->portno));
980
981 /* Enable/disable 1G counters in DSM */
982 spx5_rmw(DSM_BUF_CFG_CSC_STAT_DIS_SET(high_speed_dev),
983 DSM_BUF_CFG_CSC_STAT_DIS,
984 sparx5,
985 DSM_BUF_CFG(port->portno));
986 }
987
988 port->conf = *conf;
989
990 return 0;
991 }
992
sparx5_port_config(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)993 int sparx5_port_config(struct sparx5 *sparx5,
994 struct sparx5_port *port,
995 struct sparx5_port_config *conf)
996 {
997 bool high_speed_dev = sparx5_is_baser(conf->portmode);
998 const struct sparx5_ops *ops = sparx5->data->ops;
999 int err, urgency, stop_wm;
1000
1001 err = sparx5_port_verify_speed(sparx5, port, conf);
1002 if (err)
1003 return err;
1004
1005 /* high speed device is already configured */
1006 if (!high_speed_dev)
1007 sparx5_port_config_low_set(sparx5, port, conf);
1008
1009 /* Configure flow control */
1010 err = sparx5_port_fc_setup(sparx5, port, conf);
1011 if (err)
1012 return err;
1013
1014 if (!is_sparx5(sparx5) && ops->is_port_10g(port->portno) &&
1015 conf->speed < SPEED_10000)
1016 spx5_rmw(DSM_DEV_TX_STOP_WM_CFG_DEV10G_SHADOW_ENA_SET(1),
1017 DSM_DEV_TX_STOP_WM_CFG_DEV10G_SHADOW_ENA,
1018 sparx5,
1019 DSM_DEV_TX_STOP_WM_CFG(port->portno));
1020
1021 /* Set the DSM stop watermark */
1022 stop_wm = sparx5_port_fifo_sz(sparx5, port->portno, conf->speed);
1023 spx5_rmw(DSM_DEV_TX_STOP_WM_CFG_DEV_TX_STOP_WM_SET(stop_wm),
1024 DSM_DEV_TX_STOP_WM_CFG_DEV_TX_STOP_WM,
1025 sparx5,
1026 DSM_DEV_TX_STOP_WM_CFG(port->portno));
1027
1028 /* Enable port in queue system */
1029 urgency = sparx5_port_fwd_urg(sparx5, conf->speed);
1030 spx5_rmw(QFWD_SWITCH_PORT_MODE_PORT_ENA_SET(1) |
1031 QFWD_SWITCH_PORT_MODE_FWD_URGENCY_SET(urgency),
1032 QFWD_SWITCH_PORT_MODE_PORT_ENA |
1033 QFWD_SWITCH_PORT_MODE_FWD_URGENCY,
1034 sparx5,
1035 QFWD_SWITCH_PORT_MODE(port->portno));
1036
1037 /* Save the new values */
1038 port->conf = *conf;
1039
1040 return 0;
1041 }
1042
1043 /* Initialize port config to default */
sparx5_port_init(struct sparx5 * sparx5,struct sparx5_port * port,struct sparx5_port_config * conf)1044 int sparx5_port_init(struct sparx5 *sparx5,
1045 struct sparx5_port *port,
1046 struct sparx5_port_config *conf)
1047 {
1048 u32 pause_start = sparx5_wm_enc(6 * (ETH_MAXLEN / SPX5_BUFFER_CELL_SZ));
1049 u32 atop = sparx5_wm_enc(20 * (ETH_MAXLEN / SPX5_BUFFER_CELL_SZ));
1050 const struct sparx5_ops *ops = sparx5->data->ops;
1051 u32 devhigh = sparx5_to_high_dev(sparx5, port->portno);
1052 u32 pix = sparx5_port_dev_index(sparx5, port->portno);
1053 u32 pcs = sparx5_to_pcs_dev(sparx5, port->portno);
1054 bool sd_pol = port->signd_active_high;
1055 bool sd_sel = !port->signd_internal;
1056 bool sd_ena = port->signd_enable;
1057 u32 pause_stop = 0xFFF - 1; /* FC generate disabled */
1058 void __iomem *devinst;
1059 void __iomem *pcsinst;
1060 int err;
1061
1062 devinst = spx5_inst_get(sparx5, devhigh, pix);
1063 pcsinst = spx5_inst_get(sparx5, pcs, pix);
1064
1065 /* Set the mux port mode */
1066 err = ops->set_port_mux(sparx5, port, conf);
1067 if (err)
1068 return err;
1069
1070 /* Configure MAC vlan awareness */
1071 err = sparx5_port_max_tags_set(sparx5, port);
1072 if (err)
1073 return err;
1074
1075 /* Set Max Length */
1076 spx5_rmw(DEV2G5_MAC_MAXLEN_CFG_MAX_LEN_SET(ETH_MAXLEN),
1077 DEV2G5_MAC_MAXLEN_CFG_MAX_LEN,
1078 sparx5,
1079 DEV2G5_MAC_MAXLEN_CFG(port->portno));
1080
1081 /* 1G/2G5: Signal Detect configuration */
1082 spx5_wr(DEV2G5_PCS1G_SD_CFG_SD_POL_SET(sd_pol) |
1083 DEV2G5_PCS1G_SD_CFG_SD_SEL_SET(sd_sel) |
1084 DEV2G5_PCS1G_SD_CFG_SD_ENA_SET(sd_ena),
1085 sparx5,
1086 DEV2G5_PCS1G_SD_CFG(port->portno));
1087
1088 /* Set Pause WM hysteresis */
1089 spx5_rmw(QSYS_PAUSE_CFG_PAUSE_START_SET(pause_start) |
1090 QSYS_PAUSE_CFG_PAUSE_STOP_SET(pause_stop) |
1091 QSYS_PAUSE_CFG_PAUSE_ENA_SET(1),
1092 QSYS_PAUSE_CFG_PAUSE_START |
1093 QSYS_PAUSE_CFG_PAUSE_STOP |
1094 QSYS_PAUSE_CFG_PAUSE_ENA,
1095 sparx5,
1096 QSYS_PAUSE_CFG(port->portno));
1097
1098 /* Port ATOP. Frames are tail dropped when this WM is hit */
1099 spx5_wr(QSYS_ATOP_ATOP_SET(atop),
1100 sparx5,
1101 QSYS_ATOP(port->portno));
1102
1103 /* Discard pause frame 01-80-C2-00-00-01 */
1104 spx5_wr(PAUSE_DISCARD, sparx5, ANA_CL_CAPTURE_BPDU_CFG(port->portno));
1105
1106 /* Discard SMAC multicast */
1107 spx5_rmw(ANA_CL_FILTER_CTRL_FILTER_SMAC_MC_DIS_SET(0),
1108 ANA_CL_FILTER_CTRL_FILTER_SMAC_MC_DIS,
1109 sparx5, ANA_CL_FILTER_CTRL(port->portno));
1110
1111 if (conf->portmode == PHY_INTERFACE_MODE_QSGMII ||
1112 conf->portmode == PHY_INTERFACE_MODE_SGMII) {
1113 err = sparx5_serdes_set(sparx5, port, conf);
1114 if (err)
1115 return err;
1116
1117 if (!ops->is_port_2g5(port->portno))
1118 /* Enable shadow device */
1119 spx5_rmw(DSM_DEV_TX_STOP_WM_CFG_DEV10G_SHADOW_ENA_SET(1),
1120 DSM_DEV_TX_STOP_WM_CFG_DEV10G_SHADOW_ENA,
1121 sparx5,
1122 DSM_DEV_TX_STOP_WM_CFG(port->portno));
1123
1124 sparx5_dev_switch(sparx5, port->portno, false);
1125 }
1126 if (conf->portmode == PHY_INTERFACE_MODE_QSGMII) {
1127 // All ports must be PCS enabled in QSGMII mode
1128 spx5_rmw(DEV2G5_DEV_RST_CTRL_PCS_TX_RST_SET(0),
1129 DEV2G5_DEV_RST_CTRL_PCS_TX_RST,
1130 sparx5,
1131 DEV2G5_DEV_RST_CTRL(port->portno));
1132 }
1133 /* Default IFGs for 1G */
1134 spx5_wr(DEV2G5_MAC_IFG_CFG_TX_IFG_SET(6) |
1135 DEV2G5_MAC_IFG_CFG_RX_IFG1_SET(0) |
1136 DEV2G5_MAC_IFG_CFG_RX_IFG2_SET(0),
1137 sparx5,
1138 DEV2G5_MAC_IFG_CFG(port->portno));
1139
1140 if (ops->is_port_2g5(port->portno))
1141 return 0; /* Low speed device only - return */
1142
1143 /* Now setup the high speed device */
1144 if (conf->portmode == PHY_INTERFACE_MODE_NA)
1145 conf->portmode = PHY_INTERFACE_MODE_10GBASER;
1146
1147 if (sparx5_is_baser(conf->portmode))
1148 sparx5_dev_switch(sparx5, port->portno, true);
1149
1150 /* Set Max Length */
1151 spx5_inst_rmw(DEV10G_MAC_MAXLEN_CFG_MAX_LEN_SET(ETH_MAXLEN),
1152 DEV10G_MAC_MAXLEN_CFG_MAX_LEN,
1153 devinst,
1154 DEV10G_MAC_MAXLEN_CFG(0));
1155
1156 /* Handle Signal Detect in 10G PCS */
1157 spx5_inst_wr(PCS10G_BR_PCS_SD_CFG_SD_POL_SET(sd_pol) |
1158 PCS10G_BR_PCS_SD_CFG_SD_SEL_SET(sd_sel) |
1159 PCS10G_BR_PCS_SD_CFG_SD_ENA_SET(sd_ena),
1160 pcsinst,
1161 PCS10G_BR_PCS_SD_CFG(0));
1162
1163 if (ops->is_port_25g(port->portno)) {
1164 /* Handle Signal Detect in 25G PCS */
1165 spx5_wr(DEV25G_PCS25G_SD_CFG_SD_POL_SET(sd_pol) |
1166 DEV25G_PCS25G_SD_CFG_SD_SEL_SET(sd_sel) |
1167 DEV25G_PCS25G_SD_CFG_SD_ENA_SET(sd_ena),
1168 sparx5,
1169 DEV25G_PCS25G_SD_CFG(pix));
1170 }
1171
1172 if (!is_sparx5(sparx5)) {
1173 void __iomem *inst;
1174 u32 dev, tinst;
1175
1176 if (ops->is_port_10g(port->portno)) {
1177 dev = sparx5_to_high_dev(sparx5, port->portno);
1178 tinst = sparx5_port_dev_index(sparx5, port->portno);
1179 inst = spx5_inst_get(sparx5, dev, tinst);
1180
1181 spx5_inst_wr(5, inst,
1182 DEV10G_PTP_STAMPER_CFG(port->portno));
1183 } else if (ops->is_port_5g(port->portno)) {
1184 dev = sparx5_to_high_dev(sparx5, port->portno);
1185 tinst = sparx5_port_dev_index(sparx5, port->portno);
1186 inst = spx5_inst_get(sparx5, dev, tinst);
1187
1188 spx5_inst_wr(5, inst,
1189 DEV5G_PTP_STAMPER_CFG(port->portno));
1190 }
1191 }
1192
1193 return 0;
1194 }
1195
sparx5_port_enable(struct sparx5_port * port,bool enable)1196 void sparx5_port_enable(struct sparx5_port *port, bool enable)
1197 {
1198 struct sparx5 *sparx5 = port->sparx5;
1199
1200 /* Enable port for frame transfer? */
1201 spx5_rmw(QFWD_SWITCH_PORT_MODE_PORT_ENA_SET(enable),
1202 QFWD_SWITCH_PORT_MODE_PORT_ENA,
1203 sparx5,
1204 QFWD_SWITCH_PORT_MODE(port->portno));
1205 }
1206
sparx5_port_qos_set(struct sparx5_port * port,struct sparx5_port_qos * qos)1207 int sparx5_port_qos_set(struct sparx5_port *port,
1208 struct sparx5_port_qos *qos)
1209 {
1210 sparx5_port_qos_dscp_set(port, &qos->dscp);
1211 sparx5_port_qos_pcp_set(port, &qos->pcp);
1212 sparx5_port_qos_pcp_rewr_set(port, &qos->pcp_rewr);
1213 sparx5_port_qos_dscp_rewr_set(port, &qos->dscp_rewr);
1214 sparx5_port_qos_default_set(port, qos);
1215
1216 return 0;
1217 }
1218
sparx5_port_qos_pcp_rewr_set(const struct sparx5_port * port,struct sparx5_port_qos_pcp_rewr * qos)1219 int sparx5_port_qos_pcp_rewr_set(const struct sparx5_port *port,
1220 struct sparx5_port_qos_pcp_rewr *qos)
1221 {
1222 int i, mode = SPARX5_PORT_REW_TAG_CTRL_CLASSIFIED;
1223 struct sparx5 *sparx5 = port->sparx5;
1224 u8 pcp, dei;
1225
1226 /* Use mapping table, with classified QoS as index, to map QoS and DP
1227 * to tagged PCP and DEI, if PCP is trusted. Otherwise use classified
1228 * PCP. Classified PCP equals frame PCP.
1229 */
1230 if (qos->enable)
1231 mode = SPARX5_PORT_REW_TAG_CTRL_MAPPED;
1232
1233 spx5_rmw(REW_TAG_CTRL_TAG_PCP_CFG_SET(mode) |
1234 REW_TAG_CTRL_TAG_DEI_CFG_SET(mode),
1235 REW_TAG_CTRL_TAG_PCP_CFG | REW_TAG_CTRL_TAG_DEI_CFG,
1236 port->sparx5, REW_TAG_CTRL(port->portno));
1237
1238 for (i = 0; i < ARRAY_SIZE(qos->map.map); i++) {
1239 /* Extract PCP and DEI */
1240 pcp = qos->map.map[i];
1241 if (pcp > SPARX5_PORT_QOS_PCP_COUNT)
1242 dei = 1;
1243 else
1244 dei = 0;
1245
1246 /* Rewrite PCP and DEI, for each classified QoS class and DP
1247 * level. This table is only used if tag ctrl mode is set to
1248 * 'mapped'.
1249 *
1250 * 0:0nd - prio=0 and dp:0 => pcp=0 and dei=0
1251 * 0:0de - prio=0 and dp:1 => pcp=0 and dei=1
1252 */
1253 if (dei) {
1254 spx5_rmw(REW_PCP_MAP_DE1_PCP_DE1_SET(pcp),
1255 REW_PCP_MAP_DE1_PCP_DE1, sparx5,
1256 REW_PCP_MAP_DE1(port->portno, i));
1257
1258 spx5_rmw(REW_DEI_MAP_DE1_DEI_DE1_SET(dei),
1259 REW_DEI_MAP_DE1_DEI_DE1, port->sparx5,
1260 REW_DEI_MAP_DE1(port->portno, i));
1261 } else {
1262 spx5_rmw(REW_PCP_MAP_DE0_PCP_DE0_SET(pcp),
1263 REW_PCP_MAP_DE0_PCP_DE0, sparx5,
1264 REW_PCP_MAP_DE0(port->portno, i));
1265
1266 spx5_rmw(REW_DEI_MAP_DE0_DEI_DE0_SET(dei),
1267 REW_DEI_MAP_DE0_DEI_DE0, port->sparx5,
1268 REW_DEI_MAP_DE0(port->portno, i));
1269 }
1270 }
1271
1272 return 0;
1273 }
1274
sparx5_port_qos_pcp_set(const struct sparx5_port * port,struct sparx5_port_qos_pcp * qos)1275 int sparx5_port_qos_pcp_set(const struct sparx5_port *port,
1276 struct sparx5_port_qos_pcp *qos)
1277 {
1278 struct sparx5 *sparx5 = port->sparx5;
1279 u8 *pcp_itr = qos->map.map;
1280 u8 pcp, dp;
1281 int i;
1282
1283 /* Enable/disable pcp and dp for qos classification. */
1284 spx5_rmw(ANA_CL_QOS_CFG_PCP_DEI_QOS_ENA_SET(qos->qos_enable) |
1285 ANA_CL_QOS_CFG_PCP_DEI_DP_ENA_SET(qos->dp_enable),
1286 ANA_CL_QOS_CFG_PCP_DEI_QOS_ENA | ANA_CL_QOS_CFG_PCP_DEI_DP_ENA,
1287 sparx5, ANA_CL_QOS_CFG(port->portno));
1288
1289 /* Map each pcp and dei value to priority and dp */
1290 for (i = 0; i < ARRAY_SIZE(qos->map.map); i++) {
1291 pcp = *(pcp_itr + i);
1292 dp = (i < SPARX5_PORT_QOS_PCP_COUNT) ? 0 : 1;
1293 spx5_rmw(ANA_CL_PCP_DEI_MAP_CFG_PCP_DEI_QOS_VAL_SET(pcp) |
1294 ANA_CL_PCP_DEI_MAP_CFG_PCP_DEI_DP_VAL_SET(dp),
1295 ANA_CL_PCP_DEI_MAP_CFG_PCP_DEI_QOS_VAL |
1296 ANA_CL_PCP_DEI_MAP_CFG_PCP_DEI_DP_VAL, sparx5,
1297 ANA_CL_PCP_DEI_MAP_CFG(port->portno, i));
1298 }
1299
1300 return 0;
1301 }
1302
sparx5_port_qos_dscp_rewr_mode_set(const struct sparx5_port * port,int mode)1303 void sparx5_port_qos_dscp_rewr_mode_set(const struct sparx5_port *port,
1304 int mode)
1305 {
1306 spx5_rmw(ANA_CL_QOS_CFG_DSCP_REWR_MODE_SEL_SET(mode),
1307 ANA_CL_QOS_CFG_DSCP_REWR_MODE_SEL, port->sparx5,
1308 ANA_CL_QOS_CFG(port->portno));
1309 }
1310
sparx5_port_qos_dscp_rewr_set(const struct sparx5_port * port,struct sparx5_port_qos_dscp_rewr * qos)1311 int sparx5_port_qos_dscp_rewr_set(const struct sparx5_port *port,
1312 struct sparx5_port_qos_dscp_rewr *qos)
1313 {
1314 struct sparx5 *sparx5 = port->sparx5;
1315 bool rewr = false;
1316 u16 dscp;
1317 int i;
1318
1319 /* On egress, rewrite DSCP value to either classified DSCP or frame
1320 * DSCP. If enabled; classified DSCP, if disabled; frame DSCP.
1321 */
1322 if (qos->enable)
1323 rewr = true;
1324
1325 spx5_rmw(REW_DSCP_MAP_DSCP_UPDATE_ENA_SET(rewr),
1326 REW_DSCP_MAP_DSCP_UPDATE_ENA, sparx5,
1327 REW_DSCP_MAP(port->portno));
1328
1329 /* On ingress, map each classified QoS class and DP to classified DSCP
1330 * value. This mapping table is global for all ports.
1331 */
1332 for (i = 0; i < ARRAY_SIZE(qos->map.map); i++) {
1333 dscp = qos->map.map[i];
1334 spx5_rmw(ANA_CL_QOS_MAP_CFG_DSCP_REWR_VAL_SET(dscp),
1335 ANA_CL_QOS_MAP_CFG_DSCP_REWR_VAL, sparx5,
1336 ANA_CL_QOS_MAP_CFG(i));
1337 }
1338
1339 return 0;
1340 }
1341
sparx5_port_qos_dscp_set(const struct sparx5_port * port,struct sparx5_port_qos_dscp * qos)1342 int sparx5_port_qos_dscp_set(const struct sparx5_port *port,
1343 struct sparx5_port_qos_dscp *qos)
1344 {
1345 struct sparx5 *sparx5 = port->sparx5;
1346 u8 *dscp = qos->map.map;
1347 int i;
1348
1349 /* Enable/disable dscp and dp for qos classification.
1350 * Disable rewrite of dscp values for now.
1351 */
1352 spx5_rmw(ANA_CL_QOS_CFG_DSCP_QOS_ENA_SET(qos->qos_enable) |
1353 ANA_CL_QOS_CFG_DSCP_DP_ENA_SET(qos->dp_enable) |
1354 ANA_CL_QOS_CFG_DSCP_KEEP_ENA_SET(1),
1355 ANA_CL_QOS_CFG_DSCP_QOS_ENA | ANA_CL_QOS_CFG_DSCP_DP_ENA |
1356 ANA_CL_QOS_CFG_DSCP_KEEP_ENA, sparx5,
1357 ANA_CL_QOS_CFG(port->portno));
1358
1359 /* Map each dscp value to priority and dp */
1360 for (i = 0; i < ARRAY_SIZE(qos->map.map); i++) {
1361 spx5_rmw(ANA_CL_DSCP_CFG_DSCP_QOS_VAL_SET(*(dscp + i)) |
1362 ANA_CL_DSCP_CFG_DSCP_DP_VAL_SET(0),
1363 ANA_CL_DSCP_CFG_DSCP_QOS_VAL |
1364 ANA_CL_DSCP_CFG_DSCP_DP_VAL, sparx5,
1365 ANA_CL_DSCP_CFG(i));
1366 }
1367
1368 /* Set per-dscp trust */
1369 for (i = 0; i < ARRAY_SIZE(qos->map.map); i++) {
1370 if (qos->qos_enable) {
1371 spx5_rmw(ANA_CL_DSCP_CFG_DSCP_TRUST_ENA_SET(1),
1372 ANA_CL_DSCP_CFG_DSCP_TRUST_ENA, sparx5,
1373 ANA_CL_DSCP_CFG(i));
1374 }
1375 }
1376
1377 return 0;
1378 }
1379
sparx5_port_qos_default_set(const struct sparx5_port * port,const struct sparx5_port_qos * qos)1380 int sparx5_port_qos_default_set(const struct sparx5_port *port,
1381 const struct sparx5_port_qos *qos)
1382 {
1383 struct sparx5 *sparx5 = port->sparx5;
1384
1385 /* Set default prio and dp level */
1386 spx5_rmw(ANA_CL_QOS_CFG_DEFAULT_QOS_VAL_SET(qos->default_prio) |
1387 ANA_CL_QOS_CFG_DEFAULT_DP_VAL_SET(0),
1388 ANA_CL_QOS_CFG_DEFAULT_QOS_VAL |
1389 ANA_CL_QOS_CFG_DEFAULT_DP_VAL,
1390 sparx5, ANA_CL_QOS_CFG(port->portno));
1391
1392 /* Set default pcp and dei for untagged frames */
1393 spx5_rmw(ANA_CL_VLAN_CTRL_PORT_PCP_SET(0) |
1394 ANA_CL_VLAN_CTRL_PORT_DEI_SET(0),
1395 ANA_CL_VLAN_CTRL_PORT_PCP |
1396 ANA_CL_VLAN_CTRL_PORT_DEI,
1397 sparx5, ANA_CL_VLAN_CTRL(port->portno));
1398
1399 return 0;
1400 }
1401
sparx5_get_internal_port(struct sparx5 * sparx5,int port)1402 int sparx5_get_internal_port(struct sparx5 *sparx5, int port)
1403 {
1404 return sparx5->data->consts->n_ports + port;
1405 }
1406