1 /* Broadcom NetXtreme-C/E network driver.
3 * Copyright (c) 2014-2016 Broadcom Corporation
4 * Copyright (c) 2016-2017 Broadcom Limited
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation.
11 #include <linux/netdevice.h>
12 #include <linux/types.h>
13 #include <linux/errno.h>
14 #include <linux/rtnetlink.h>
15 #include <linux/interrupt.h>
16 #include <linux/pci.h>
17 #include <linux/etherdevice.h>
18 #include <rdma/ib_verbs.h>
23 #ifdef CONFIG_BNXT_DCB
24 static int bnxt_hwrm_queue_pri2cos_cfg(struct bnxt *bp, struct ieee_ets *ets)
26 struct hwrm_queue_pri2cos_cfg_input req = {0};
30 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_PRI2COS_CFG, -1, -1);
31 req.flags = cpu_to_le32(QUEUE_PRI2COS_CFG_REQ_FLAGS_PATH_BIDIR |
32 QUEUE_PRI2COS_CFG_REQ_FLAGS_IVLAN);
34 pri2cos = &req.pri0_cos_queue_id;
35 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
36 req.enables |= cpu_to_le32(
37 QUEUE_PRI2COS_CFG_REQ_ENABLES_PRI0_COS_QUEUE_ID << i);
39 pri2cos[i] = bp->q_info[ets->prio_tc[i]].queue_id;
41 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
45 static int bnxt_hwrm_queue_pri2cos_qcfg(struct bnxt *bp, struct ieee_ets *ets)
47 struct hwrm_queue_pri2cos_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
48 struct hwrm_queue_pri2cos_qcfg_input req = {0};
51 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_PRI2COS_QCFG, -1, -1);
52 req.flags = cpu_to_le32(QUEUE_PRI2COS_QCFG_REQ_FLAGS_IVLAN);
53 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
55 u8 *pri2cos = &resp->pri0_cos_queue_id;
58 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
59 u8 queue_id = pri2cos[i];
61 for (j = 0; j < bp->max_tc; j++) {
62 if (bp->q_info[j].queue_id == queue_id) {
72 static int bnxt_hwrm_queue_cos2bw_cfg(struct bnxt *bp, struct ieee_ets *ets,
75 struct hwrm_queue_cos2bw_cfg_input req = {0};
76 struct bnxt_cos2bw_cfg cos2bw;
80 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_COS2BW_CFG, -1, -1);
82 for (i = 0; i < max_tc; i++, data += sizeof(cos2bw) - 4) {
83 req.enables |= cpu_to_le32(
84 QUEUE_COS2BW_CFG_REQ_ENABLES_COS_QUEUE_ID0_VALID << i);
86 memset(&cos2bw, 0, sizeof(cos2bw));
87 cos2bw.queue_id = bp->q_info[i].queue_id;
88 if (ets->tc_tsa[i] == IEEE_8021QAZ_TSA_STRICT) {
90 QUEUE_COS2BW_QCFG_RESP_QUEUE_ID0_TSA_ASSIGN_SP;
94 QUEUE_COS2BW_QCFG_RESP_QUEUE_ID0_TSA_ASSIGN_ETS;
95 cos2bw.bw_weight = ets->tc_tx_bw[i];
97 memcpy(data, &cos2bw.queue_id, sizeof(cos2bw) - 4);
99 req.queue_id0 = cos2bw.queue_id;
103 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
107 static int bnxt_hwrm_queue_cos2bw_qcfg(struct bnxt *bp, struct ieee_ets *ets)
109 struct hwrm_queue_cos2bw_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
110 struct hwrm_queue_cos2bw_qcfg_input req = {0};
111 struct bnxt_cos2bw_cfg cos2bw;
115 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_COS2BW_QCFG, -1, -1);
116 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
120 data = &resp->queue_id0 + offsetof(struct bnxt_cos2bw_cfg, queue_id);
121 for (i = 0; i < bp->max_tc; i++, data += sizeof(cos2bw) - 4) {
124 memcpy(&cos2bw.queue_id, data, sizeof(cos2bw) - 4);
126 cos2bw.queue_id = resp->queue_id0;
128 for (j = 0; j < bp->max_tc; j++) {
129 if (bp->q_info[j].queue_id != cos2bw.queue_id)
132 QUEUE_COS2BW_QCFG_RESP_QUEUE_ID0_TSA_ASSIGN_SP) {
133 ets->tc_tsa[j] = IEEE_8021QAZ_TSA_STRICT;
135 ets->tc_tsa[j] = IEEE_8021QAZ_TSA_ETS;
136 ets->tc_tx_bw[j] = cos2bw.bw_weight;
143 static int bnxt_hwrm_queue_cfg(struct bnxt *bp, unsigned int lltc_mask)
145 struct hwrm_queue_cfg_input req = {0};
148 if (netif_running(bp->dev))
151 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_CFG, -1, -1);
152 req.flags = cpu_to_le32(QUEUE_CFG_REQ_FLAGS_PATH_BIDIR);
153 req.enables = cpu_to_le32(QUEUE_CFG_REQ_ENABLES_SERVICE_PROFILE);
155 /* Configure lossless queues to lossy first */
156 req.service_profile = QUEUE_CFG_REQ_SERVICE_PROFILE_LOSSY;
157 for (i = 0; i < bp->max_tc; i++) {
158 if (BNXT_LLQ(bp->q_info[i].queue_profile)) {
159 req.queue_id = cpu_to_le32(bp->q_info[i].queue_id);
160 hwrm_send_message(bp, &req, sizeof(req),
162 bp->q_info[i].queue_profile =
163 QUEUE_CFG_REQ_SERVICE_PROFILE_LOSSY;
167 /* Now configure desired queues to lossless */
168 req.service_profile = QUEUE_CFG_REQ_SERVICE_PROFILE_LOSSLESS;
169 for (i = 0; i < bp->max_tc; i++) {
170 if (lltc_mask & (1 << i)) {
171 req.queue_id = cpu_to_le32(bp->q_info[i].queue_id);
172 hwrm_send_message(bp, &req, sizeof(req),
174 bp->q_info[i].queue_profile =
175 QUEUE_CFG_REQ_SERVICE_PROFILE_LOSSLESS;
178 if (netif_running(bp->dev))
184 static int bnxt_hwrm_queue_pfc_cfg(struct bnxt *bp, struct ieee_pfc *pfc)
186 struct hwrm_queue_pfcenable_cfg_input req = {0};
187 struct ieee_ets *my_ets = bp->ieee_ets;
188 unsigned int tc_mask = 0, pri_mask = 0;
189 u8 i, pri, lltc_count = 0;
190 bool need_q_recfg = false;
196 for (i = 0; i < bp->max_tc; i++) {
197 for (pri = 0; pri < IEEE_8021QAZ_MAX_TCS; pri++) {
198 if ((pfc->pfc_en & (1 << pri)) &&
199 (my_ets->prio_tc[pri] == i)) {
200 pri_mask |= 1 << pri;
204 if (tc_mask & (1 << i))
207 if (lltc_count > bp->max_lltc)
210 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_PFCENABLE_CFG, -1, -1);
211 req.flags = cpu_to_le32(pri_mask);
212 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
216 for (i = 0; i < bp->max_tc; i++) {
217 if (tc_mask & (1 << i)) {
218 if (!BNXT_LLQ(bp->q_info[i].queue_profile))
224 rc = bnxt_hwrm_queue_cfg(bp, tc_mask);
229 static int bnxt_hwrm_queue_pfc_qcfg(struct bnxt *bp, struct ieee_pfc *pfc)
231 struct hwrm_queue_pfcenable_qcfg_output *resp = bp->hwrm_cmd_resp_addr;
232 struct hwrm_queue_pfcenable_qcfg_input req = {0};
236 bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_QUEUE_PFCENABLE_QCFG, -1, -1);
237 rc = hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
241 pri_mask = le32_to_cpu(resp->flags);
242 pfc->pfc_en = pri_mask;
246 static int bnxt_hwrm_set_dcbx_app(struct bnxt *bp, struct dcb_app *app,
249 struct hwrm_fw_set_structured_data_input set = {0};
250 struct hwrm_fw_get_structured_data_input get = {0};
251 struct hwrm_struct_data_dcbx_app *fw_app;
252 struct hwrm_struct_hdr *data;
257 if (bp->hwrm_spec_code < 0x10601)
260 n = IEEE_8021QAZ_MAX_TCS;
261 data_len = sizeof(*data) + sizeof(*fw_app) * n;
262 data = dma_alloc_coherent(&bp->pdev->dev, data_len, &mapping,
267 memset(data, 0, data_len);
268 bnxt_hwrm_cmd_hdr_init(bp, &get, HWRM_FW_GET_STRUCTURED_DATA, -1, -1);
269 get.dest_data_addr = cpu_to_le64(mapping);
270 get.structure_id = cpu_to_le16(STRUCT_HDR_STRUCT_ID_DCBX_APP);
271 get.subtype = cpu_to_le16(HWRM_STRUCT_DATA_SUBTYPE_HOST_OPERATIONAL);
273 rc = hwrm_send_message(bp, &get, sizeof(get), HWRM_CMD_TIMEOUT);
277 fw_app = (struct hwrm_struct_data_dcbx_app *)(data + 1);
279 if (data->struct_id != cpu_to_le16(STRUCT_HDR_STRUCT_ID_DCBX_APP)) {
285 for (i = 0; i < n; i++, fw_app++) {
286 if (fw_app->protocol_id == cpu_to_be16(app->protocol) &&
287 fw_app->protocol_selector == app->selector &&
288 fw_app->priority == app->priority) {
298 fw_app->protocol_id = cpu_to_be16(app->protocol);
299 fw_app->protocol_selector = app->selector;
300 fw_app->priority = app->priority;
305 /* not found, nothing to delete */
309 len = (n - 1 - i) * sizeof(*fw_app);
311 memmove(fw_app, fw_app + 1, len);
313 memset(fw_app + n, 0, sizeof(*fw_app));
316 data->len = cpu_to_le16(sizeof(*fw_app) * n);
317 data->subtype = cpu_to_le16(HWRM_STRUCT_DATA_SUBTYPE_HOST_OPERATIONAL);
319 bnxt_hwrm_cmd_hdr_init(bp, &set, HWRM_FW_SET_STRUCTURED_DATA, -1, -1);
320 set.src_data_addr = cpu_to_le64(mapping);
321 set.data_len = cpu_to_le16(sizeof(*data) + sizeof(*fw_app) * n);
323 rc = hwrm_send_message(bp, &set, sizeof(set), HWRM_CMD_TIMEOUT);
328 dma_free_coherent(&bp->pdev->dev, data_len, data, mapping);
332 static int bnxt_ets_validate(struct bnxt *bp, struct ieee_ets *ets, u8 *tc)
334 int total_ets_bw = 0;
338 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) {
339 if (ets->prio_tc[i] > bp->max_tc) {
340 netdev_err(bp->dev, "priority to TC mapping exceeds TC count %d\n",
344 if (ets->prio_tc[i] > max_tc)
345 max_tc = ets->prio_tc[i];
347 if ((ets->tc_tx_bw[i] || ets->tc_tsa[i]) && i > bp->max_tc)
350 switch (ets->tc_tsa[i]) {
351 case IEEE_8021QAZ_TSA_STRICT:
353 case IEEE_8021QAZ_TSA_ETS:
354 total_ets_bw += ets->tc_tx_bw[i];
360 if (total_ets_bw > 100)
367 static int bnxt_dcbnl_ieee_getets(struct net_device *dev, struct ieee_ets *ets)
369 struct bnxt *bp = netdev_priv(dev);
370 struct ieee_ets *my_ets = bp->ieee_ets;
372 ets->ets_cap = bp->max_tc;
377 if (bp->dcbx_cap & DCB_CAP_DCBX_HOST)
380 my_ets = kzalloc(sizeof(*my_ets), GFP_KERNEL);
383 rc = bnxt_hwrm_queue_cos2bw_qcfg(bp, my_ets);
386 rc = bnxt_hwrm_queue_pri2cos_qcfg(bp, my_ets);
391 ets->cbs = my_ets->cbs;
392 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw));
393 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw));
394 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa));
395 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc));
399 static int bnxt_dcbnl_ieee_setets(struct net_device *dev, struct ieee_ets *ets)
401 struct bnxt *bp = netdev_priv(dev);
402 struct ieee_ets *my_ets = bp->ieee_ets;
406 if (!(bp->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
407 !(bp->dcbx_cap & DCB_CAP_DCBX_HOST))
410 rc = bnxt_ets_validate(bp, ets, &max_tc);
413 my_ets = kzalloc(sizeof(*my_ets), GFP_KERNEL);
416 /* initialize PRI2TC mappings to invalid value */
417 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++)
418 my_ets->prio_tc[i] = IEEE_8021QAZ_MAX_TCS;
419 bp->ieee_ets = my_ets;
421 rc = bnxt_setup_mq_tc(dev, max_tc);
424 rc = bnxt_hwrm_queue_cos2bw_cfg(bp, ets, max_tc);
427 rc = bnxt_hwrm_queue_pri2cos_cfg(bp, ets);
430 memcpy(my_ets, ets, sizeof(*my_ets));
435 static int bnxt_dcbnl_ieee_getpfc(struct net_device *dev, struct ieee_pfc *pfc)
437 struct bnxt *bp = netdev_priv(dev);
438 __le64 *stats = (__le64 *)bp->hw_rx_port_stats;
439 struct ieee_pfc *my_pfc = bp->ieee_pfc;
443 pfc->pfc_cap = bp->max_lltc;
446 if (bp->dcbx_cap & DCB_CAP_DCBX_HOST)
449 my_pfc = kzalloc(sizeof(*my_pfc), GFP_KERNEL);
452 bp->ieee_pfc = my_pfc;
453 rc = bnxt_hwrm_queue_pfc_qcfg(bp, my_pfc);
458 pfc->pfc_en = my_pfc->pfc_en;
459 pfc->mbc = my_pfc->mbc;
460 pfc->delay = my_pfc->delay;
465 rx_off = BNXT_RX_STATS_OFFSET(rx_pfc_ena_frames_pri0);
466 tx_off = BNXT_TX_STATS_OFFSET(tx_pfc_ena_frames_pri0);
467 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++, rx_off++, tx_off++) {
468 pfc->requests[i] = le64_to_cpu(*(stats + tx_off));
469 pfc->indications[i] = le64_to_cpu(*(stats + rx_off));
475 static int bnxt_dcbnl_ieee_setpfc(struct net_device *dev, struct ieee_pfc *pfc)
477 struct bnxt *bp = netdev_priv(dev);
478 struct ieee_pfc *my_pfc = bp->ieee_pfc;
481 if (!(bp->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
482 !(bp->dcbx_cap & DCB_CAP_DCBX_HOST))
486 my_pfc = kzalloc(sizeof(*my_pfc), GFP_KERNEL);
489 bp->ieee_pfc = my_pfc;
491 rc = bnxt_hwrm_queue_pfc_cfg(bp, pfc);
493 memcpy(my_pfc, pfc, sizeof(*my_pfc));
498 static int bnxt_dcbnl_ieee_setapp(struct net_device *dev, struct dcb_app *app)
500 struct bnxt *bp = netdev_priv(dev);
503 if (!(bp->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
504 !(bp->dcbx_cap & DCB_CAP_DCBX_HOST))
507 rc = dcb_ieee_setapp(dev, app);
511 if ((app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
512 app->protocol == ETH_P_IBOE) ||
513 (app->selector == IEEE_8021QAZ_APP_SEL_DGRAM &&
514 app->protocol == ROCE_V2_UDP_DPORT))
515 rc = bnxt_hwrm_set_dcbx_app(bp, app, true);
520 static int bnxt_dcbnl_ieee_delapp(struct net_device *dev, struct dcb_app *app)
522 struct bnxt *bp = netdev_priv(dev);
525 if (!(bp->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) ||
526 !(bp->dcbx_cap & DCB_CAP_DCBX_HOST))
529 rc = dcb_ieee_delapp(dev, app);
532 if ((app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE &&
533 app->protocol == ETH_P_IBOE) ||
534 (app->selector == IEEE_8021QAZ_APP_SEL_DGRAM &&
535 app->protocol == ROCE_V2_UDP_DPORT))
536 rc = bnxt_hwrm_set_dcbx_app(bp, app, false);
541 static u8 bnxt_dcbnl_getdcbx(struct net_device *dev)
543 struct bnxt *bp = netdev_priv(dev);
548 static u8 bnxt_dcbnl_setdcbx(struct net_device *dev, u8 mode)
550 struct bnxt *bp = netdev_priv(dev);
552 /* only support IEEE */
553 if ((mode & DCB_CAP_DCBX_VER_CEE) || !(mode & DCB_CAP_DCBX_VER_IEEE))
556 if ((mode & DCB_CAP_DCBX_HOST) && BNXT_VF(bp))
559 if (mode == bp->dcbx_cap)
566 static const struct dcbnl_rtnl_ops dcbnl_ops = {
567 .ieee_getets = bnxt_dcbnl_ieee_getets,
568 .ieee_setets = bnxt_dcbnl_ieee_setets,
569 .ieee_getpfc = bnxt_dcbnl_ieee_getpfc,
570 .ieee_setpfc = bnxt_dcbnl_ieee_setpfc,
571 .ieee_setapp = bnxt_dcbnl_ieee_setapp,
572 .ieee_delapp = bnxt_dcbnl_ieee_delapp,
573 .getdcbx = bnxt_dcbnl_getdcbx,
574 .setdcbx = bnxt_dcbnl_setdcbx,
577 void bnxt_dcb_init(struct bnxt *bp)
579 if (bp->hwrm_spec_code < 0x10501)
582 bp->dcbx_cap = DCB_CAP_DCBX_VER_IEEE;
583 if (BNXT_PF(bp) && !(bp->flags & BNXT_FLAG_FW_LLDP_AGENT))
584 bp->dcbx_cap |= DCB_CAP_DCBX_HOST;
586 bp->dcbx_cap |= DCB_CAP_DCBX_LLD_MANAGED;
587 bp->dev->dcbnl_ops = &dcbnl_ops;
590 void bnxt_dcb_free(struct bnxt *bp)
600 void bnxt_dcb_init(struct bnxt *bp)
604 void bnxt_dcb_free(struct bnxt *bp)