1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(C) 2019 Marvell International Ltd.
5 #include "otx2_ethdev.h"
8 otx2_nix_rxchan_bpid_cfg(struct rte_eth_dev *eth_dev, bool enb)
10 struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
11 struct otx2_fc_info *fc = &dev->fc_info;
12 struct otx2_mbox *mbox = dev->mbox;
13 struct nix_bp_cfg_req *req;
14 struct nix_bp_cfg_rsp *rsp;
17 if (otx2_dev_is_sdp(dev))
21 req = otx2_mbox_alloc_msg_nix_bp_enable(mbox);
24 req->bpid_per_chan = 0;
26 rc = otx2_mbox_process_msg(mbox, (void *)&rsp);
27 if (rc || req->chan_cnt != rsp->chan_cnt) {
28 otx2_err("Insufficient BPIDs, alloc=%u < req=%u rc=%d",
29 rsp->chan_cnt, req->chan_cnt, rc);
33 fc->bpid[0] = rsp->chan_bpid[0];
35 req = otx2_mbox_alloc_msg_nix_bp_disable(mbox);
39 rc = otx2_mbox_process(mbox);
41 memset(fc->bpid, 0, sizeof(uint16_t) * NIX_MAX_CHAN);
48 otx2_nix_flow_ctrl_get(struct rte_eth_dev *eth_dev,
49 struct rte_eth_fc_conf *fc_conf)
51 struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
52 struct cgx_pause_frm_cfg *req, *rsp;
53 struct otx2_mbox *mbox = dev->mbox;
56 if (otx2_dev_is_lbk(dev)) {
57 fc_conf->mode = RTE_FC_NONE;
61 req = otx2_mbox_alloc_msg_cgx_cfg_pause_frm(mbox);
64 rc = otx2_mbox_process_msg(mbox, (void *)&rsp);
68 if (rsp->rx_pause && rsp->tx_pause)
69 fc_conf->mode = RTE_FC_FULL;
70 else if (rsp->rx_pause)
71 fc_conf->mode = RTE_FC_RX_PAUSE;
72 else if (rsp->tx_pause)
73 fc_conf->mode = RTE_FC_TX_PAUSE;
75 fc_conf->mode = RTE_FC_NONE;
82 otx2_nix_cq_bp_cfg(struct rte_eth_dev *eth_dev, bool enb)
84 struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
85 struct otx2_fc_info *fc = &dev->fc_info;
86 struct otx2_mbox *mbox = dev->mbox;
87 struct nix_aq_enq_req *aq;
88 struct otx2_eth_rxq *rxq;
91 for (i = 0; i < eth_dev->data->nb_rx_queues; i++) {
92 rxq = eth_dev->data->rx_queues[i];
94 aq = otx2_mbox_alloc_msg_nix_aq_enq(mbox);
96 /* The shared memory buffer can be full.
99 otx2_mbox_msg_send(mbox, 0);
100 rc = otx2_mbox_wait_for_rsp(mbox, 0);
104 aq = otx2_mbox_alloc_msg_nix_aq_enq(mbox);
109 aq->ctype = NIX_AQ_CTYPE_CQ;
110 aq->op = NIX_AQ_INSTOP_WRITE;
113 aq->cq.bpid = fc->bpid[0];
114 aq->cq_mask.bpid = ~(aq->cq_mask.bpid);
115 aq->cq.bp = rxq->cq_drop;
116 aq->cq_mask.bp = ~(aq->cq_mask.bp);
119 aq->cq.bp_ena = !!enb;
120 aq->cq_mask.bp_ena = ~(aq->cq_mask.bp_ena);
123 otx2_mbox_msg_send(mbox, 0);
124 rc = otx2_mbox_wait_for_rsp(mbox, 0);
132 otx2_nix_rx_fc_cfg(struct rte_eth_dev *eth_dev, bool enb)
134 return otx2_nix_cq_bp_cfg(eth_dev, enb);
138 otx2_nix_flow_ctrl_set(struct rte_eth_dev *eth_dev,
139 struct rte_eth_fc_conf *fc_conf)
141 struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
142 struct otx2_fc_info *fc = &dev->fc_info;
143 struct otx2_mbox *mbox = dev->mbox;
144 struct cgx_pause_frm_cfg *req;
145 uint8_t tx_pause, rx_pause;
148 if (otx2_dev_is_lbk(dev)) {
149 otx2_info("No flow control support for LBK bound ethports");
153 if (fc_conf->high_water || fc_conf->low_water || fc_conf->pause_time ||
154 fc_conf->mac_ctrl_frame_fwd || fc_conf->autoneg) {
155 otx2_info("Flowctrl parameter is not supported");
159 if (fc_conf->mode == fc->mode)
162 rx_pause = (fc_conf->mode == RTE_FC_FULL) ||
163 (fc_conf->mode == RTE_FC_RX_PAUSE);
164 tx_pause = (fc_conf->mode == RTE_FC_FULL) ||
165 (fc_conf->mode == RTE_FC_TX_PAUSE);
167 /* Check if TX pause frame is already enabled or not */
168 if (fc->tx_pause ^ tx_pause) {
169 if (otx2_dev_is_Ax(dev) && eth_dev->data->dev_started) {
170 /* on Ax, CQ should be in disabled state
171 * while setting flow control configuration.
173 otx2_info("Stop the port=%d for setting flow control\n",
174 eth_dev->data->port_id);
177 /* TX pause frames, enable/disable flowctrl on RX side. */
178 rc = otx2_nix_rx_fc_cfg(eth_dev, tx_pause);
183 req = otx2_mbox_alloc_msg_cgx_cfg_pause_frm(mbox);
185 req->rx_pause = rx_pause;
186 req->tx_pause = tx_pause;
188 rc = otx2_mbox_process(mbox);
192 fc->tx_pause = tx_pause;
193 fc->rx_pause = rx_pause;
194 fc->mode = fc_conf->mode;
200 otx2_nix_update_flow_ctrl_mode(struct rte_eth_dev *eth_dev)
202 struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
203 struct otx2_fc_info *fc = &dev->fc_info;
204 struct rte_eth_fc_conf fc_conf;
206 if (otx2_dev_is_lbk(dev) || otx2_dev_is_sdp(dev))
209 memset(&fc_conf, 0, sizeof(struct rte_eth_fc_conf));
210 fc_conf.mode = fc->mode;
212 /* To avoid Link credit deadlock on Ax, disable Tx FC if it's enabled */
213 if (otx2_dev_is_Ax(dev) &&
214 (dev->npc_flow.switch_header_type != OTX2_PRIV_FLAGS_HIGIG) &&
215 (fc_conf.mode == RTE_FC_FULL || fc_conf.mode == RTE_FC_RX_PAUSE)) {
217 (fc_conf.mode == RTE_FC_FULL ||
218 fc_conf.mode == RTE_FC_TX_PAUSE) ?
219 RTE_FC_TX_PAUSE : RTE_FC_NONE;
222 return otx2_nix_flow_ctrl_set(eth_dev, &fc_conf);
226 otx2_nix_flow_ctrl_init(struct rte_eth_dev *eth_dev)
228 struct otx2_eth_dev *dev = otx2_eth_pmd_priv(eth_dev);
229 struct otx2_fc_info *fc = &dev->fc_info;
230 struct rte_eth_fc_conf fc_conf;
233 if (otx2_dev_is_lbk(dev) || otx2_dev_is_sdp(dev))
236 memset(&fc_conf, 0, sizeof(struct rte_eth_fc_conf));
237 /* Both Rx & Tx flow ctrl get enabled(RTE_FC_FULL) in HW
238 * by AF driver, update those info in PMD structure.
240 rc = otx2_nix_flow_ctrl_get(eth_dev, &fc_conf);
244 fc->mode = fc_conf.mode;
245 fc->rx_pause = (fc_conf.mode == RTE_FC_FULL) ||
246 (fc_conf.mode == RTE_FC_RX_PAUSE);
247 fc->tx_pause = (fc_conf.mode == RTE_FC_FULL) ||
248 (fc_conf.mode == RTE_FC_TX_PAUSE);