| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Sunil Goutham | 6768 | 67.16% | 18 | 20.93% |
| Geetha Sowjanya | 1220 | 12.11% | 12 | 13.95% |
| Christina Jacob | 500 | 4.96% | 2 | 2.33% |
| Hariprasad Kelam | 438 | 4.35% | 9 | 10.47% |
| Subbaraya Sundeep | 339 | 3.36% | 10 | 11.63% |
| Ratheesh Kannoth | 304 | 3.02% | 6 | 6.98% |
| Suman Ghosh | 114 | 1.13% | 2 | 2.33% |
| Naveen Mamindlapalli | 98 | 0.97% | 5 | 5.81% |
| Kevin Hao | 73 | 0.72% | 5 | 5.81% |
| Tomasz Duszynski | 64 | 0.64% | 2 | 2.33% |
| Zhipeng Lu | 42 | 0.42% | 1 | 1.16% |
| Aleksey Makarov | 41 | 0.41% | 1 | 1.16% |
| Rakesh Babu | 20 | 0.20% | 1 | 1.16% |
| Dan Carpenter | 17 | 0.17% | 2 | 2.33% |
| Linu Cherian | 10 | 0.10% | 1 | 1.16% |
| Yang Yingliang | 9 | 0.09% | 1 | 1.16% |
| George Cherian | 7 | 0.07% | 3 | 3.49% |
| Xu Wang | 5 | 0.05% | 1 | 1.16% |
| Colin Ian King | 3 | 0.03% | 1 | 1.16% |
| Lin Yun Sheng | 3 | 0.03% | 1 | 1.16% |
| Jakub Kiciński | 2 | 0.02% | 2 | 2.33% |
| Total | 10077 | 86 |
// SPDX-License-Identifier: GPL-2.0 /* Marvell RVU Ethernet driver * * Copyright (C) 2020 Marvell. * */ #include <linux/interrupt.h> #include <linux/pci.h> #include <net/page_pool/helpers.h> #include <net/tso.h> #include <linux/bitfield.h> #include "otx2_reg.h" #include "otx2_common.h" #include "otx2_struct.h" #include "cn10k.h" static void otx2_nix_rq_op_stats(struct queue_stats *stats, struct otx2_nic *pfvf, int qidx) { u64 incr = (u64)qidx << 32; u64 *ptr; ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_RQ_OP_OCTS); stats->bytes = otx2_atomic64_add(incr, ptr); ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_RQ_OP_PKTS); stats->pkts = otx2_atomic64_add(incr, ptr); } static void otx2_nix_sq_op_stats(struct queue_stats *stats, struct otx2_nic *pfvf, int qidx) { u64 incr = (u64)qidx << 32; u64 *ptr; ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_SQ_OP_OCTS); stats->bytes = otx2_atomic64_add(incr, ptr); ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_SQ_OP_PKTS); stats->pkts = otx2_atomic64_add(incr, ptr); } void otx2_update_lmac_stats(struct otx2_nic *pfvf) { struct msg_req *req; if (!netif_running(pfvf->netdev)) return; mutex_lock(&pfvf->mbox.lock); req = otx2_mbox_alloc_msg_cgx_stats(&pfvf->mbox); if (!req) { mutex_unlock(&pfvf->mbox.lock); return; } otx2_sync_mbox_msg(&pfvf->mbox); mutex_unlock(&pfvf->mbox.lock); } void otx2_update_lmac_fec_stats(struct otx2_nic *pfvf) { struct msg_req *req; if (!netif_running(pfvf->netdev)) return; mutex_lock(&pfvf->mbox.lock); req = otx2_mbox_alloc_msg_cgx_fec_stats(&pfvf->mbox); if (req) otx2_sync_mbox_msg(&pfvf->mbox); mutex_unlock(&pfvf->mbox.lock); } int otx2_update_rq_stats(struct otx2_nic *pfvf, int qidx) { struct otx2_rcv_queue *rq = &pfvf->qset.rq[qidx]; if (!pfvf->qset.rq) return 0; otx2_nix_rq_op_stats(&rq->stats, pfvf, qidx); return 1; } int otx2_update_sq_stats(struct otx2_nic *pfvf, int qidx) { struct otx2_snd_queue *sq = &pfvf->qset.sq[qidx]; if (!pfvf->qset.sq) return 0; if (qidx >= pfvf->hw.non_qos_queues) { if (!test_bit(qidx - pfvf->hw.non_qos_queues, pfvf->qos.qos_sq_bmap)) return 0; } otx2_nix_sq_op_stats(&sq->stats, pfvf, qidx); return 1; } void otx2_get_dev_stats(struct otx2_nic *pfvf) { struct otx2_dev_stats *dev_stats = &pfvf->hw.dev_stats; dev_stats->rx_bytes = OTX2_GET_RX_STATS(RX_OCTS); dev_stats->rx_drops = OTX2_GET_RX_STATS(RX_DROP); dev_stats->rx_bcast_frames = OTX2_GET_RX_STATS(RX_BCAST); dev_stats->rx_mcast_frames = OTX2_GET_RX_STATS(RX_MCAST); dev_stats->rx_ucast_frames = OTX2_GET_RX_STATS(RX_UCAST); dev_stats->rx_frames = dev_stats->rx_bcast_frames + dev_stats->rx_mcast_frames + dev_stats->rx_ucast_frames; dev_stats->tx_bytes = OTX2_GET_TX_STATS(TX_OCTS); dev_stats->tx_drops = OTX2_GET_TX_STATS(TX_DROP); dev_stats->tx_bcast_frames = OTX2_GET_TX_STATS(TX_BCAST); dev_stats->tx_mcast_frames = OTX2_GET_TX_STATS(TX_MCAST); dev_stats->tx_ucast_frames = OTX2_GET_TX_STATS(TX_UCAST); dev_stats->tx_frames = dev_stats->tx_bcast_frames + dev_stats->tx_mcast_frames + dev_stats->tx_ucast_frames; } void otx2_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) { struct otx2_nic *pfvf = netdev_priv(netdev); struct otx2_dev_stats *dev_stats; otx2_get_dev_stats(pfvf); dev_stats = &pfvf->hw.dev_stats; stats->rx_bytes = dev_stats->rx_bytes; stats->rx_packets = dev_stats->rx_frames; stats->rx_dropped = dev_stats->rx_drops; stats->multicast = dev_stats->rx_mcast_frames; stats->tx_bytes = dev_stats->tx_bytes; stats->tx_packets = dev_stats->tx_frames; stats->tx_dropped = dev_stats->tx_drops; } EXPORT_SYMBOL(otx2_get_stats64); /* Sync MAC address with RVU AF */ static int otx2_hw_set_mac_addr(struct otx2_nic *pfvf, u8 *mac) { struct nix_set_mac_addr *req; int err; mutex_lock(&pfvf->mbox.lock); req = otx2_mbox_alloc_msg_nix_set_mac_addr(&pfvf->mbox); if (!req) { mutex_unlock(&pfvf->mbox.lock); return -ENOMEM; } ether_addr_copy(req->mac_addr, mac); err = otx2_sync_mbox_msg(&pfvf->mbox); mutex_unlock(&pfvf->mbox.lock); return err; } static int otx2_hw_get_mac_addr(struct otx2_nic *pfvf, struct net_device *netdev) { struct nix_get_mac_addr_rsp *rsp; struct mbox_msghdr *msghdr; struct msg_req *req; int err; mutex_lock(&pfvf->mbox.lock); req = otx2_mbox_alloc_msg_nix_get_mac_addr(&pfvf->mbox); if (!req) { mutex_unlock(&pfvf->mbox.lock); return -ENOMEM; } err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) { mutex_unlock(&pfvf->mbox.lock); return err; } msghdr = otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr); if (IS_ERR(msghdr)) { mutex_unlock(&pfvf->mbox.lock); return PTR_ERR(msghdr); } rsp = (struct nix_get_mac_addr_rsp *)msghdr; eth_hw_addr_set(netdev, rsp->mac_addr); mutex_unlock(&pfvf->mbox.lock); return 0; } int otx2_set_mac_address(struct net_device *netdev, void *p) { struct otx2_nic *pfvf = netdev_priv(netdev); struct sockaddr *addr = p; if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL; if (!otx2_hw_set_mac_addr(pfvf, addr->sa_data)) { eth_hw_addr_set(netdev, addr->sa_data); /* update dmac field in vlan offload rule */ if (netif_running(netdev) && pfvf->flags & OTX2_FLAG_RX_VLAN_SUPPORT) otx2_install_rxvlan_offload_flow(pfvf); /* update dmac address in ntuple and DMAC filter list */ if (pfvf->flags & OTX2_FLAG_DMACFLTR_SUPPORT) otx2_dmacflt_update_pfmac_flow(pfvf); } else { return -EPERM; } return 0; } EXPORT_SYMBOL(otx2_set_mac_address); int otx2_hw_set_mtu(struct otx2_nic *pfvf, int mtu) { struct nix_frs_cfg *req; u16 maxlen; int err; maxlen = otx2_get_max_mtu(pfvf) + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN; mutex_lock(&pfvf->mbox.lock); req = otx2_mbox_alloc_msg_nix_set_hw_frs(&pfvf->mbox); if (!req) { mutex_unlock(&pfvf->mbox.lock); return -ENOMEM; } req->maxlen = pfvf->netdev->mtu + OTX2_ETH_HLEN + OTX2_HW_TIMESTAMP_LEN; /* Use max receive length supported by hardware for loopback devices */ if (is_otx2_lbkvf(pfvf->pdev)) req->maxlen = maxlen; err = otx2_sync_mbox_msg(&pfvf->mbox); mutex_unlock(&pfvf->mbox.lock); return err; } int otx2_config_pause_frm(struct otx2_nic *pfvf) { struct cgx_pause_frm_cfg *req; int err; if (is_otx2_lbkvf(pfvf->pdev)) return 0; mutex_lock(&pfvf->mbox.lock); req = otx2_mbox_alloc_msg_cgx_cfg_pause_frm(&pfvf->mbox); if (!req) { err = -ENOMEM; goto unlock; } req->rx_pause = !!(pfvf->flags & OTX2_FLAG_RX_PAUSE_ENABLED); req->tx_pause = !!(pfvf->flags & OTX2_FLAG_TX_PAUSE_ENABLED); req->set = 1; err = otx2_sync_mbox_msg(&pfvf->mbox); unlock: mutex_unlock(&pfvf->mbox.lock); return err; } EXPORT_SYMBOL(otx2_config_pause_frm); int otx2_set_flowkey_cfg(struct otx2_nic *pfvf) { struct otx2_rss_info *rss = &pfvf->hw.rss_info; struct nix_rss_flowkey_cfg_rsp *rsp; struct nix_rss_flowkey_cfg *req; int err; mutex_lock(&pfvf->mbox.lock); req = otx2_mbox_alloc_msg_nix_rss_flowkey_cfg(&pfvf->mbox); if (!req) { mutex_unlock(&pfvf->mbox.lock); return -ENOMEM; } req->mcam_index = -1; /* Default or reserved index */ req->flowkey_cfg = rss->flowkey_cfg; req->group = DEFAULT_RSS_CONTEXT_GROUP; err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) goto fail; rsp = (struct nix_rss_flowkey_cfg_rsp *) otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr); if (IS_ERR(rsp)) { err = PTR_ERR(rsp); goto fail; } pfvf->hw.flowkey_alg_idx = rsp->alg_idx; fail: mutex_unlock(&pfvf->mbox.lock); return err; } int otx2_set_rss_table(struct otx2_nic *pfvf, int ctx_id) { struct otx2_rss_info *rss = &pfvf->hw.rss_info; const int index = rss->rss_size * ctx_id; struct mbox *mbox = &pfvf->mbox; struct otx2_rss_ctx *rss_ctx; struct nix_aq_enq_req *aq; int idx, err; mutex_lock(&mbox->lock); rss_ctx = rss->rss_ctx[ctx_id]; /* Get memory to put this msg */ for (idx = 0; idx < rss->rss_size; idx++) { aq = otx2_mbox_alloc_msg_nix_aq_enq(mbox); if (!aq) { /* The shared memory buffer can be full. * Flush it and retry */ err = otx2_sync_mbox_msg(mbox); if (err) { mutex_unlock(&mbox->lock); return err; } aq = otx2_mbox_alloc_msg_nix_aq_enq(mbox); if (!aq) { mutex_unlock(&mbox->lock); return -ENOMEM; } } aq->rss.rq = rss_ctx->ind_tbl[idx]; /* Fill AQ info */ aq->qidx = index + idx; aq->ctype = NIX_AQ_CTYPE_RSS; aq->op = NIX_AQ_INSTOP_INIT; } err = otx2_sync_mbox_msg(mbox); mutex_unlock(&mbox->lock); return err; } void otx2_set_rss_key(struct otx2_nic *pfvf) { struct otx2_rss_info *rss = &pfvf->hw.rss_info; u64 *key = (u64 *)&rss->key[4]; int idx; /* 352bit or 44byte key needs to be configured as below * NIX_LF_RX_SECRETX0 = key<351:288> * NIX_LF_RX_SECRETX1 = key<287:224> * NIX_LF_RX_SECRETX2 = key<223:160> * NIX_LF_RX_SECRETX3 = key<159:96> * NIX_LF_RX_SECRETX4 = key<95:32> * NIX_LF_RX_SECRETX5<63:32> = key<31:0> */ otx2_write64(pfvf, NIX_LF_RX_SECRETX(5), (u64)(*((u32 *)&rss->key)) << 32); idx = sizeof(rss->key) / sizeof(u64); while (idx > 0) { idx--; otx2_write64(pfvf, NIX_LF_RX_SECRETX(idx), *key++); } } int otx2_rss_init(struct otx2_nic *pfvf) { struct otx2_rss_info *rss = &pfvf->hw.rss_info; struct otx2_rss_ctx *rss_ctx; int idx, ret = 0; rss->rss_size = sizeof(*rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP]); /* Init RSS key if it is not setup already */ if (!rss->enable) netdev_rss_key_fill(rss->key, sizeof(rss->key)); otx2_set_rss_key(pfvf); if (!netif_is_rxfh_configured(pfvf->netdev)) { /* Set RSS group 0 as default indirection table */ rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP] = kzalloc(rss->rss_size, GFP_KERNEL); if (!rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP]) return -ENOMEM; rss_ctx = rss->rss_ctx[DEFAULT_RSS_CONTEXT_GROUP]; for (idx = 0; idx < rss->rss_size; idx++) rss_ctx->ind_tbl[idx] = ethtool_rxfh_indir_default(idx, pfvf->hw.rx_queues); } ret = otx2_set_rss_table(pfvf, DEFAULT_RSS_CONTEXT_GROUP); if (ret) return ret; /* Flowkey or hash config to be used for generating flow tag */ rss->flowkey_cfg = rss->enable ? rss->flowkey_cfg : NIX_FLOW_KEY_TYPE_IPV4 | NIX_FLOW_KEY_TYPE_IPV6 | NIX_FLOW_KEY_TYPE_TCP | NIX_FLOW_KEY_TYPE_UDP | NIX_FLOW_KEY_TYPE_SCTP | NIX_FLOW_KEY_TYPE_VLAN | NIX_FLOW_KEY_TYPE_IPV4_PROTO; ret = otx2_set_flowkey_cfg(pfvf); if (ret) return ret; rss->enable = true; return 0; } /* Setup UDP segmentation algorithm in HW */ static void otx2_setup_udp_segmentation(struct nix_lso_format_cfg *lso, bool v4) { struct nix_lso_format *field; field = (struct nix_lso_format *)&lso->fields[0]; lso->field_mask = GENMASK(18, 0); /* IP's Length field */ field->layer = NIX_TXLAYER_OL3; /* In ipv4, length field is at offset 2 bytes, for ipv6 it's 4 */ field->offset = v4 ? 2 : 4; field->sizem1 = 1; /* i.e 2 bytes */ field->alg = NIX_LSOALG_ADD_PAYLEN; field++; /* No ID field in IPv6 header */ if (v4) { /* Increment IPID */ field->layer = NIX_TXLAYER_OL3; field->offset = 4; field->sizem1 = 1; /* i.e 2 bytes */ field->alg = NIX_LSOALG_ADD_SEGNUM; field++; } /* Update length in UDP header */ field->layer = NIX_TXLAYER_OL4; field->offset = 4; field->sizem1 = 1; field->alg = NIX_LSOALG_ADD_PAYLEN; } /* Setup segmentation algorithms in HW and retrieve algorithm index */ void otx2_setup_segmentation(struct otx2_nic *pfvf) { struct nix_lso_format_cfg_rsp *rsp; struct nix_lso_format_cfg *lso; struct otx2_hw *hw = &pfvf->hw; int err; mutex_lock(&pfvf->mbox.lock); /* UDPv4 segmentation */ lso = otx2_mbox_alloc_msg_nix_lso_format_cfg(&pfvf->mbox); if (!lso) goto fail; /* Setup UDP/IP header fields that HW should update per segment */ otx2_setup_udp_segmentation(lso, true); err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) goto fail; rsp = (struct nix_lso_format_cfg_rsp *) otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &lso->hdr); if (IS_ERR(rsp)) goto fail; hw->lso_udpv4_idx = rsp->lso_format_idx; /* UDPv6 segmentation */ lso = otx2_mbox_alloc_msg_nix_lso_format_cfg(&pfvf->mbox); if (!lso) goto fail; /* Setup UDP/IP header fields that HW should update per segment */ otx2_setup_udp_segmentation(lso, false); err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) goto fail; rsp = (struct nix_lso_format_cfg_rsp *) otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &lso->hdr); if (IS_ERR(rsp)) goto fail; hw->lso_udpv6_idx = rsp->lso_format_idx; mutex_unlock(&pfvf->mbox.lock); return; fail: mutex_unlock(&pfvf->mbox.lock); netdev_info(pfvf->netdev, "Failed to get LSO index for UDP GSO offload, disabling\n"); pfvf->netdev->hw_features &= ~NETIF_F_GSO_UDP_L4; } void otx2_config_irq_coalescing(struct otx2_nic *pfvf, int qidx) { /* Configure CQE interrupt coalescing parameters * * HW triggers an irq when ECOUNT > cq_ecount_wait, hence * set 1 less than cq_ecount_wait. And cq_time_wait is in * usecs, convert that to 100ns count. */ otx2_write64(pfvf, NIX_LF_CINTX_WAIT(qidx), ((u64)(pfvf->hw.cq_time_wait * 10) << 48) | ((u64)pfvf->hw.cq_qcount_wait << 32) | (pfvf->hw.cq_ecount_wait - 1)); } static int otx2_alloc_pool_buf(struct otx2_nic *pfvf, struct otx2_pool *pool, dma_addr_t *dma) { unsigned int offset = 0; struct page *page; size_t sz; sz = SKB_DATA_ALIGN(pool->rbsize); sz = ALIGN(sz, OTX2_ALIGN); page = page_pool_alloc_frag(pool->page_pool, &offset, sz, GFP_ATOMIC); if (unlikely(!page)) return -ENOMEM; *dma = page_pool_get_dma_addr(page) + offset; return 0; } static int __otx2_alloc_rbuf(struct otx2_nic *pfvf, struct otx2_pool *pool, dma_addr_t *dma) { u8 *buf; if (pool->page_pool) return otx2_alloc_pool_buf(pfvf, pool, dma); buf = napi_alloc_frag_align(pool->rbsize, OTX2_ALIGN); if (unlikely(!buf)) return -ENOMEM; *dma = dma_map_single_attrs(pfvf->dev, buf, pool->rbsize, DMA_FROM_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); if (unlikely(dma_mapping_error(pfvf->dev, *dma))) { page_frag_free(buf); return -ENOMEM; } return 0; } int otx2_alloc_rbuf(struct otx2_nic *pfvf, struct otx2_pool *pool, dma_addr_t *dma) { int ret; local_bh_disable(); ret = __otx2_alloc_rbuf(pfvf, pool, dma); local_bh_enable(); return ret; } int otx2_alloc_buffer(struct otx2_nic *pfvf, struct otx2_cq_queue *cq, dma_addr_t *dma) { if (unlikely(__otx2_alloc_rbuf(pfvf, cq->rbpool, dma))) return -ENOMEM; return 0; } void otx2_tx_timeout(struct net_device *netdev, unsigned int txq) { struct otx2_nic *pfvf = netdev_priv(netdev); schedule_work(&pfvf->reset_task); } EXPORT_SYMBOL(otx2_tx_timeout); void otx2_get_mac_from_af(struct net_device *netdev) { struct otx2_nic *pfvf = netdev_priv(netdev); int err; err = otx2_hw_get_mac_addr(pfvf, netdev); if (err) dev_warn(pfvf->dev, "Failed to read mac from hardware\n"); /* If AF doesn't provide a valid MAC, generate a random one */ if (!is_valid_ether_addr(netdev->dev_addr)) eth_hw_addr_random(netdev); } EXPORT_SYMBOL(otx2_get_mac_from_af); int otx2_txschq_config(struct otx2_nic *pfvf, int lvl, int prio, bool txschq_for_pfc) { u16 (*schq_list)[MAX_TXSCHQ_PER_FUNC]; struct otx2_hw *hw = &pfvf->hw; struct nix_txschq_config *req; u64 schq, parent; u64 dwrr_val; dwrr_val = mtu_to_dwrr_weight(pfvf, pfvf->tx_max_pktlen); req = otx2_mbox_alloc_msg_nix_txschq_cfg(&pfvf->mbox); if (!req) return -ENOMEM; req->lvl = lvl; req->num_regs = 1; schq_list = hw->txschq_list; #ifdef CONFIG_DCB if (txschq_for_pfc) schq_list = pfvf->pfc_schq_list; #endif schq = schq_list[lvl][prio]; /* Set topology e.t.c configuration */ if (lvl == NIX_TXSCH_LVL_SMQ) { req->reg[0] = NIX_AF_SMQX_CFG(schq); req->regval[0] = ((u64)pfvf->tx_max_pktlen << 8) | OTX2_MIN_MTU; req->regval[0] |= (0x20ULL << 51) | (0x80ULL << 39) | (0x2ULL << 36); /* Set link type for DWRR MTU selection on CN10K silicons */ if (!is_dev_otx2(pfvf->pdev)) req->regval[0] |= FIELD_PREP(GENMASK_ULL(58, 57), (u64)hw->smq_link_type); req->num_regs++; /* MDQ config */ parent = schq_list[NIX_TXSCH_LVL_TL4][prio]; req->reg[1] = NIX_AF_MDQX_PARENT(schq); req->regval[1] = parent << 16; req->num_regs++; /* Set DWRR quantum */ req->reg[2] = NIX_AF_MDQX_SCHEDULE(schq); req->regval[2] = dwrr_val; } else if (lvl == NIX_TXSCH_LVL_TL4) { parent = schq_list[NIX_TXSCH_LVL_TL3][prio]; req->reg[0] = NIX_AF_TL4X_PARENT(schq); req->regval[0] = (u64)parent << 16; req->num_regs++; req->reg[1] = NIX_AF_TL4X_SCHEDULE(schq); req->regval[1] = dwrr_val; } else if (lvl == NIX_TXSCH_LVL_TL3) { parent = schq_list[NIX_TXSCH_LVL_TL2][prio]; req->reg[0] = NIX_AF_TL3X_PARENT(schq); req->regval[0] = (u64)parent << 16; req->num_regs++; req->reg[1] = NIX_AF_TL3X_SCHEDULE(schq); req->regval[1] = dwrr_val; if (lvl == hw->txschq_link_cfg_lvl) { req->num_regs++; req->reg[2] = NIX_AF_TL3_TL2X_LINKX_CFG(schq, hw->tx_link); /* Enable this queue and backpressure * and set relative channel */ req->regval[2] = BIT_ULL(13) | BIT_ULL(12) | prio; } } else if (lvl == NIX_TXSCH_LVL_TL2) { parent = schq_list[NIX_TXSCH_LVL_TL1][prio]; req->reg[0] = NIX_AF_TL2X_PARENT(schq); req->regval[0] = (u64)parent << 16; req->num_regs++; req->reg[1] = NIX_AF_TL2X_SCHEDULE(schq); req->regval[1] = (u64)hw->txschq_aggr_lvl_rr_prio << 24 | dwrr_val; if (lvl == hw->txschq_link_cfg_lvl) { req->num_regs++; req->reg[2] = NIX_AF_TL3_TL2X_LINKX_CFG(schq, hw->tx_link); /* Enable this queue and backpressure * and set relative channel */ req->regval[2] = BIT_ULL(13) | BIT_ULL(12) | prio; } } else if (lvl == NIX_TXSCH_LVL_TL1) { /* Default config for TL1. * For VF this is always ignored. */ /* On CN10K, if RR_WEIGHT is greater than 16384, HW will * clip it to 16384, so configuring a 24bit max value * will work on both OTx2 and CN10K. */ req->reg[0] = NIX_AF_TL1X_SCHEDULE(schq); req->regval[0] = TXSCH_TL1_DFLT_RR_QTM; req->num_regs++; req->reg[1] = NIX_AF_TL1X_TOPOLOGY(schq); req->regval[1] = hw->txschq_aggr_lvl_rr_prio << 1; req->num_regs++; req->reg[2] = NIX_AF_TL1X_CIR(schq); req->regval[2] = 0; } return otx2_sync_mbox_msg(&pfvf->mbox); } EXPORT_SYMBOL(otx2_txschq_config); int otx2_smq_flush(struct otx2_nic *pfvf, int smq) { struct nix_txschq_config *req; int rc; mutex_lock(&pfvf->mbox.lock); req = otx2_mbox_alloc_msg_nix_txschq_cfg(&pfvf->mbox); if (!req) { mutex_unlock(&pfvf->mbox.lock); return -ENOMEM; } req->lvl = NIX_TXSCH_LVL_SMQ; req->reg[0] = NIX_AF_SMQX_CFG(smq); req->regval[0] |= BIT_ULL(49); req->num_regs++; rc = otx2_sync_mbox_msg(&pfvf->mbox); mutex_unlock(&pfvf->mbox.lock); return rc; } EXPORT_SYMBOL(otx2_smq_flush); int otx2_txsch_alloc(struct otx2_nic *pfvf) { struct nix_txsch_alloc_req *req; struct nix_txsch_alloc_rsp *rsp; int lvl, schq, rc; /* Get memory to put this msg */ req = otx2_mbox_alloc_msg_nix_txsch_alloc(&pfvf->mbox); if (!req) return -ENOMEM; /* Request one schq per level */ for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) req->schq[lvl] = 1; rc = otx2_sync_mbox_msg(&pfvf->mbox); if (rc) return rc; rsp = (struct nix_txsch_alloc_rsp *) otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr); if (IS_ERR(rsp)) return PTR_ERR(rsp); /* Setup transmit scheduler list */ for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) for (schq = 0; schq < rsp->schq[lvl]; schq++) pfvf->hw.txschq_list[lvl][schq] = rsp->schq_list[lvl][schq]; pfvf->hw.txschq_link_cfg_lvl = rsp->link_cfg_lvl; pfvf->hw.txschq_aggr_lvl_rr_prio = rsp->aggr_lvl_rr_prio; return 0; } void otx2_txschq_free_one(struct otx2_nic *pfvf, u16 lvl, u16 schq) { struct nix_txsch_free_req *free_req; int err; mutex_lock(&pfvf->mbox.lock); free_req = otx2_mbox_alloc_msg_nix_txsch_free(&pfvf->mbox); if (!free_req) { mutex_unlock(&pfvf->mbox.lock); netdev_err(pfvf->netdev, "Failed alloc txschq free req\n"); return; } free_req->schq_lvl = lvl; free_req->schq = schq; err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) { netdev_err(pfvf->netdev, "Failed stop txschq %d at level %d\n", schq, lvl); } mutex_unlock(&pfvf->mbox.lock); } EXPORT_SYMBOL(otx2_txschq_free_one); void otx2_txschq_stop(struct otx2_nic *pfvf) { int lvl, schq; /* free non QOS TLx nodes */ for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) otx2_txschq_free_one(pfvf, lvl, pfvf->hw.txschq_list[lvl][0]); /* Clear the txschq list */ for (lvl = 0; lvl < NIX_TXSCH_LVL_CNT; lvl++) { for (schq = 0; schq < MAX_TXSCHQ_PER_FUNC; schq++) pfvf->hw.txschq_list[lvl][schq] = 0; } } void otx2_sqb_flush(struct otx2_nic *pfvf) { int qidx, sqe_tail, sqe_head; struct otx2_snd_queue *sq; u64 incr, *ptr, val; ptr = (u64 *)otx2_get_regaddr(pfvf, NIX_LF_SQ_OP_STATUS); for (qidx = 0; qidx < otx2_get_total_tx_queues(pfvf); qidx++) { sq = &pfvf->qset.sq[qidx]; if (!sq->sqb_ptrs) continue; incr = (u64)qidx << 32; val = otx2_atomic64_add(incr, ptr); sqe_head = (val >> 20) & 0x3F; sqe_tail = (val >> 28) & 0x3F; if (sqe_head != sqe_tail) usleep_range(50, 60); } } /* RED and drop levels of CQ on packet reception. * For CQ level is measure of emptiness ( 0x0 = full, 255 = empty). */ #define RQ_PASS_LVL_CQ(skid, qsize) ((((skid) + 16) * 256) / (qsize)) #define RQ_DROP_LVL_CQ(skid, qsize) (((skid) * 256) / (qsize)) /* RED and drop levels of AURA for packet reception. * For AURA level is measure of fullness (0x0 = empty, 255 = full). * Eg: For RQ length 1K, for pass/drop level 204/230. * RED accepts pkts if free pointers > 102 & <= 205. * Drops pkts if free pointers < 102. */ #define RQ_BP_LVL_AURA (255 - ((85 * 256) / 100)) /* BP when 85% is full */ #define RQ_PASS_LVL_AURA (255 - ((95 * 256) / 100)) /* RED when 95% is full */ #define RQ_DROP_LVL_AURA (255 - ((99 * 256) / 100)) /* Drop when 99% is full */ static int otx2_rq_init(struct otx2_nic *pfvf, u16 qidx, u16 lpb_aura) { struct otx2_qset *qset = &pfvf->qset; struct nix_aq_enq_req *aq; /* Get memory to put this msg */ aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox); if (!aq) return -ENOMEM; aq->rq.cq = qidx; aq->rq.ena = 1; aq->rq.pb_caching = 1; aq->rq.lpb_aura = lpb_aura; /* Use large packet buffer aura */ aq->rq.lpb_sizem1 = (DMA_BUFFER_LEN(pfvf->rbsize) / 8) - 1; aq->rq.xqe_imm_size = 0; /* Copying of packet to CQE not needed */ aq->rq.flow_tagw = 32; /* Copy full 32bit flow_tag to CQE header */ aq->rq.qint_idx = 0; aq->rq.lpb_drop_ena = 1; /* Enable RED dropping for AURA */ aq->rq.xqe_drop_ena = 1; /* Enable RED dropping for CQ/SSO */ aq->rq.xqe_pass = RQ_PASS_LVL_CQ(pfvf->hw.rq_skid, qset->rqe_cnt); aq->rq.xqe_drop = RQ_DROP_LVL_CQ(pfvf->hw.rq_skid, qset->rqe_cnt); aq->rq.lpb_aura_pass = RQ_PASS_LVL_AURA; aq->rq.lpb_aura_drop = RQ_DROP_LVL_AURA; /* Fill AQ info */ aq->qidx = qidx; aq->ctype = NIX_AQ_CTYPE_RQ; aq->op = NIX_AQ_INSTOP_INIT; return otx2_sync_mbox_msg(&pfvf->mbox); } int otx2_sq_aq_init(void *dev, u16 qidx, u16 sqb_aura) { struct otx2_nic *pfvf = dev; struct otx2_snd_queue *sq; struct nix_aq_enq_req *aq; sq = &pfvf->qset.sq[qidx]; sq->lmt_addr = (__force u64 *)(pfvf->reg_base + LMT_LF_LMTLINEX(qidx)); /* Get memory to put this msg */ aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox); if (!aq) return -ENOMEM; aq->sq.cq = pfvf->hw.rx_queues + qidx; aq->sq.max_sqe_size = NIX_MAXSQESZ_W16; /* 128 byte */ aq->sq.cq_ena = 1; aq->sq.ena = 1; aq->sq.smq = otx2_get_smq_idx(pfvf, qidx); aq->sq.smq_rr_quantum = mtu_to_dwrr_weight(pfvf, pfvf->tx_max_pktlen); aq->sq.default_chan = pfvf->hw.tx_chan_base; aq->sq.sqe_stype = NIX_STYPE_STF; /* Cache SQB */ aq->sq.sqb_aura = sqb_aura; aq->sq.sq_int_ena = NIX_SQINT_BITS; aq->sq.qint_idx = 0; /* Due pipelining impact minimum 2000 unused SQ CQE's * need to maintain to avoid CQ overflow. */ aq->sq.cq_limit = ((SEND_CQ_SKID * 256) / (pfvf->qset.sqe_cnt)); /* Fill AQ info */ aq->qidx = qidx; aq->ctype = NIX_AQ_CTYPE_SQ; aq->op = NIX_AQ_INSTOP_INIT; return otx2_sync_mbox_msg(&pfvf->mbox); } int otx2_sq_init(struct otx2_nic *pfvf, u16 qidx, u16 sqb_aura) { struct otx2_qset *qset = &pfvf->qset; struct otx2_snd_queue *sq; struct otx2_pool *pool; int err; pool = &pfvf->qset.pool[sqb_aura]; sq = &qset->sq[qidx]; sq->sqe_size = NIX_SQESZ_W16 ? 64 : 128; sq->sqe_cnt = qset->sqe_cnt; err = qmem_alloc(pfvf->dev, &sq->sqe, 1, sq->sqe_size); if (err) return err; if (qidx < pfvf->hw.tx_queues) { err = qmem_alloc(pfvf->dev, &sq->tso_hdrs, qset->sqe_cnt, TSO_HEADER_SIZE); if (err) return err; } sq->sqe_base = sq->sqe->base; sq->sg = kcalloc(qset->sqe_cnt, sizeof(struct sg_list), GFP_KERNEL); if (!sq->sg) return -ENOMEM; if (pfvf->ptp && qidx < pfvf->hw.tx_queues) { err = qmem_alloc(pfvf->dev, &sq->timestamps, qset->sqe_cnt, sizeof(*sq->timestamps)); if (err) { kfree(sq->sg); sq->sg = NULL; return err; } } sq->head = 0; sq->cons_head = 0; sq->sqe_per_sqb = (pfvf->hw.sqb_size / sq->sqe_size) - 1; sq->num_sqbs = (qset->sqe_cnt + sq->sqe_per_sqb) / sq->sqe_per_sqb; /* Set SQE threshold to 10% of total SQEs */ sq->sqe_thresh = ((sq->num_sqbs * sq->sqe_per_sqb) * 10) / 100; sq->aura_id = sqb_aura; sq->aura_fc_addr = pool->fc_addr->base; sq->io_addr = (__force u64)otx2_get_regaddr(pfvf, NIX_LF_OP_SENDX(0)); sq->stats.bytes = 0; sq->stats.pkts = 0; err = pfvf->hw_ops->sq_aq_init(pfvf, qidx, sqb_aura); if (err) { kfree(sq->sg); sq->sg = NULL; return err; } return 0; } static int otx2_cq_init(struct otx2_nic *pfvf, u16 qidx) { struct otx2_qset *qset = &pfvf->qset; int err, pool_id, non_xdp_queues; struct nix_aq_enq_req *aq; struct otx2_cq_queue *cq; cq = &qset->cq[qidx]; cq->cq_idx = qidx; non_xdp_queues = pfvf->hw.rx_queues + pfvf->hw.tx_queues; if (qidx < pfvf->hw.rx_queues) { cq->cq_type = CQ_RX; cq->cint_idx = qidx; cq->cqe_cnt = qset->rqe_cnt; if (pfvf->xdp_prog) xdp_rxq_info_reg(&cq->xdp_rxq, pfvf->netdev, qidx, 0); } else if (qidx < non_xdp_queues) { cq->cq_type = CQ_TX; cq->cint_idx = qidx - pfvf->hw.rx_queues; cq->cqe_cnt = qset->sqe_cnt; } else { if (pfvf->hw.xdp_queues && qidx < non_xdp_queues + pfvf->hw.xdp_queues) { cq->cq_type = CQ_XDP; cq->cint_idx = qidx - non_xdp_queues; cq->cqe_cnt = qset->sqe_cnt; } else { cq->cq_type = CQ_QOS; cq->cint_idx = qidx - non_xdp_queues - pfvf->hw.xdp_queues; cq->cqe_cnt = qset->sqe_cnt; } } cq->cqe_size = pfvf->qset.xqe_size; /* Allocate memory for CQEs */ err = qmem_alloc(pfvf->dev, &cq->cqe, cq->cqe_cnt, cq->cqe_size); if (err) return err; /* Save CQE CPU base for faster reference */ cq->cqe_base = cq->cqe->base; /* In case where all RQs auras point to single pool, * all CQs receive buffer pool also point to same pool. */ pool_id = ((cq->cq_type == CQ_RX) && (pfvf->hw.rqpool_cnt != pfvf->hw.rx_queues)) ? 0 : qidx; cq->rbpool = &qset->pool[pool_id]; cq->refill_task_sched = false; /* Get memory to put this msg */ aq = otx2_mbox_alloc_msg_nix_aq_enq(&pfvf->mbox); if (!aq) return -ENOMEM; aq->cq.ena = 1; aq->cq.qsize = Q_SIZE(cq->cqe_cnt, 4); aq->cq.caching = 1; aq->cq.base = cq->cqe->iova; aq->cq.cint_idx = cq->cint_idx; aq->cq.cq_err_int_ena = NIX_CQERRINT_BITS; aq->cq.qint_idx = 0; aq->cq.avg_level = 255; if (qidx < pfvf->hw.rx_queues) { aq->cq.drop = RQ_DROP_LVL_CQ(pfvf->hw.rq_skid, cq->cqe_cnt); aq->cq.drop_ena = 1; if (!is_otx2_lbkvf(pfvf->pdev)) { /* Enable receive CQ backpressure */ aq->cq.bp_ena = 1; #ifdef CONFIG_DCB aq->cq.bpid = pfvf->bpid[pfvf->queue_to_pfc_map[qidx]]; #else aq->cq.bpid = pfvf->bpid[0]; #endif /* Set backpressure level is same as cq pass level */ aq->cq.bp = RQ_PASS_LVL_CQ(pfvf->hw.rq_skid, qset->rqe_cnt); } } /* Fill AQ info */ aq->qidx = qidx; aq->ctype = NIX_AQ_CTYPE_CQ; aq->op = NIX_AQ_INSTOP_INIT; return otx2_sync_mbox_msg(&pfvf->mbox); } static void otx2_pool_refill_task(struct work_struct *work) { struct otx2_cq_queue *cq; struct refill_work *wrk; struct otx2_nic *pfvf; int qidx; wrk = container_of(work, struct refill_work, pool_refill_work.work); pfvf = wrk->pf; qidx = wrk - pfvf->refill_wrk; cq = &pfvf->qset.cq[qidx]; cq->refill_task_sched = false; local_bh_disable(); napi_schedule(wrk->napi); local_bh_enable(); } int otx2_config_nix_queues(struct otx2_nic *pfvf) { int qidx, err; /* Initialize RX queues */ for (qidx = 0; qidx < pfvf->hw.rx_queues; qidx++) { u16 lpb_aura = otx2_get_pool_idx(pfvf, AURA_NIX_RQ, qidx); err = otx2_rq_init(pfvf, qidx, lpb_aura); if (err) return err; } /* Initialize TX queues */ for (qidx = 0; qidx < pfvf->hw.non_qos_queues; qidx++) { u16 sqb_aura = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx); err = otx2_sq_init(pfvf, qidx, sqb_aura); if (err) return err; } /* Initialize completion queues */ for (qidx = 0; qidx < pfvf->qset.cq_cnt; qidx++) { err = otx2_cq_init(pfvf, qidx); if (err) return err; } pfvf->cq_op_addr = (__force u64 *)otx2_get_regaddr(pfvf, NIX_LF_CQ_OP_STATUS); /* Initialize work queue for receive buffer refill */ pfvf->refill_wrk = devm_kcalloc(pfvf->dev, pfvf->qset.cq_cnt, sizeof(struct refill_work), GFP_KERNEL); if (!pfvf->refill_wrk) return -ENOMEM; for (qidx = 0; qidx < pfvf->qset.cq_cnt; qidx++) { pfvf->refill_wrk[qidx].pf = pfvf; INIT_DELAYED_WORK(&pfvf->refill_wrk[qidx].pool_refill_work, otx2_pool_refill_task); } return 0; } int otx2_config_nix(struct otx2_nic *pfvf) { struct nix_lf_alloc_req *nixlf; struct nix_lf_alloc_rsp *rsp; int err; pfvf->qset.xqe_size = pfvf->hw.xqe_size; /* Get memory to put this msg */ nixlf = otx2_mbox_alloc_msg_nix_lf_alloc(&pfvf->mbox); if (!nixlf) return -ENOMEM; /* Set RQ/SQ/CQ counts */ nixlf->rq_cnt = pfvf->hw.rx_queues; nixlf->sq_cnt = otx2_get_total_tx_queues(pfvf); nixlf->cq_cnt = pfvf->qset.cq_cnt; nixlf->rss_sz = MAX_RSS_INDIR_TBL_SIZE; nixlf->rss_grps = MAX_RSS_GROUPS; nixlf->xqe_sz = pfvf->hw.xqe_size == 128 ? NIX_XQESZ_W16 : NIX_XQESZ_W64; /* We don't know absolute NPA LF idx attached. * AF will replace 'RVU_DEFAULT_PF_FUNC' with * NPA LF attached to this RVU PF/VF. */ nixlf->npa_func = RVU_DEFAULT_PF_FUNC; /* Disable alignment pad, enable L2 length check, * enable L4 TCP/UDP checksum verification. */ nixlf->rx_cfg = BIT_ULL(33) | BIT_ULL(35) | BIT_ULL(37); err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) return err; rsp = (struct nix_lf_alloc_rsp *)otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &nixlf->hdr); if (IS_ERR(rsp)) return PTR_ERR(rsp); if (rsp->qints < 1) return -ENXIO; return rsp->hdr.rc; } void otx2_sq_free_sqbs(struct otx2_nic *pfvf) { struct otx2_qset *qset = &pfvf->qset; struct otx2_hw *hw = &pfvf->hw; struct otx2_snd_queue *sq; int sqb, qidx; u64 iova, pa; for (qidx = 0; qidx < otx2_get_total_tx_queues(pfvf); qidx++) { sq = &qset->sq[qidx]; if (!sq->sqb_ptrs) continue; for (sqb = 0; sqb < sq->sqb_count; sqb++) { if (!sq->sqb_ptrs[sqb]) continue; iova = sq->sqb_ptrs[sqb]; pa = otx2_iova_to_phys(pfvf->iommu_domain, iova); dma_unmap_page_attrs(pfvf->dev, iova, hw->sqb_size, DMA_FROM_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); put_page(virt_to_page(phys_to_virt(pa))); } sq->sqb_count = 0; } } void otx2_free_bufs(struct otx2_nic *pfvf, struct otx2_pool *pool, u64 iova, int size) { struct page *page; u64 pa; pa = otx2_iova_to_phys(pfvf->iommu_domain, iova); page = virt_to_head_page(phys_to_virt(pa)); if (pool->page_pool) { page_pool_put_full_page(pool->page_pool, page, true); } else { dma_unmap_page_attrs(pfvf->dev, iova, size, DMA_FROM_DEVICE, DMA_ATTR_SKIP_CPU_SYNC); put_page(page); } } void otx2_free_aura_ptr(struct otx2_nic *pfvf, int type) { int pool_id, pool_start = 0, pool_end = 0, size = 0; struct otx2_pool *pool; u64 iova; if (type == AURA_NIX_SQ) { pool_start = otx2_get_pool_idx(pfvf, type, 0); pool_end = pool_start + pfvf->hw.sqpool_cnt; size = pfvf->hw.sqb_size; } if (type == AURA_NIX_RQ) { pool_start = otx2_get_pool_idx(pfvf, type, 0); pool_end = pfvf->hw.rqpool_cnt; size = pfvf->rbsize; } /* Free SQB and RQB pointers from the aura pool */ for (pool_id = pool_start; pool_id < pool_end; pool_id++) { iova = otx2_aura_allocptr(pfvf, pool_id); pool = &pfvf->qset.pool[pool_id]; while (iova) { if (type == AURA_NIX_RQ) iova -= OTX2_HEAD_ROOM; otx2_free_bufs(pfvf, pool, iova, size); iova = otx2_aura_allocptr(pfvf, pool_id); } } } void otx2_aura_pool_free(struct otx2_nic *pfvf) { struct otx2_pool *pool; int pool_id; if (!pfvf->qset.pool) return; for (pool_id = 0; pool_id < pfvf->hw.pool_cnt; pool_id++) { pool = &pfvf->qset.pool[pool_id]; qmem_free(pfvf->dev, pool->stack); qmem_free(pfvf->dev, pool->fc_addr); page_pool_destroy(pool->page_pool); pool->page_pool = NULL; } devm_kfree(pfvf->dev, pfvf->qset.pool); pfvf->qset.pool = NULL; } int otx2_aura_init(struct otx2_nic *pfvf, int aura_id, int pool_id, int numptrs) { struct npa_aq_enq_req *aq; struct otx2_pool *pool; int err; pool = &pfvf->qset.pool[pool_id]; /* Allocate memory for HW to update Aura count. * Alloc one cache line, so that it fits all FC_STYPE modes. */ if (!pool->fc_addr) { err = qmem_alloc(pfvf->dev, &pool->fc_addr, 1, OTX2_ALIGN); if (err) return err; } /* Initialize this aura's context via AF */ aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox); if (!aq) { /* Shared mbox memory buffer is full, flush it and retry */ err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) return err; aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox); if (!aq) return -ENOMEM; } aq->aura_id = aura_id; /* Will be filled by AF with correct pool context address */ aq->aura.pool_addr = pool_id; aq->aura.pool_caching = 1; aq->aura.shift = ilog2(numptrs) - 8; aq->aura.count = numptrs; aq->aura.limit = numptrs; aq->aura.avg_level = 255; aq->aura.ena = 1; aq->aura.fc_ena = 1; aq->aura.fc_addr = pool->fc_addr->iova; aq->aura.fc_hyst_bits = 0; /* Store count on all updates */ /* Enable backpressure for RQ aura */ if (aura_id < pfvf->hw.rqpool_cnt && !is_otx2_lbkvf(pfvf->pdev)) { aq->aura.bp_ena = 0; /* If NIX1 LF is attached then specify NIX1_RX. * * Below NPA_AURA_S[BP_ENA] is set according to the * NPA_BPINTF_E enumeration given as: * 0x0 + a*0x1 where 'a' is 0 for NIX0_RX and 1 for NIX1_RX so * NIX0_RX is 0x0 + 0*0x1 = 0 * NIX1_RX is 0x0 + 1*0x1 = 1 * But in HRM it is given that * "NPA_AURA_S[BP_ENA](w1[33:32]) - Enable aura backpressure to * NIX-RX based on [BP] level. One bit per NIX-RX; index * enumerated by NPA_BPINTF_E." */ if (pfvf->nix_blkaddr == BLKADDR_NIX1) aq->aura.bp_ena = 1; #ifdef CONFIG_DCB aq->aura.nix0_bpid = pfvf->bpid[pfvf->queue_to_pfc_map[aura_id]]; #else aq->aura.nix0_bpid = pfvf->bpid[0]; #endif /* Set backpressure level for RQ's Aura */ aq->aura.bp = RQ_BP_LVL_AURA; } /* Fill AQ info */ aq->ctype = NPA_AQ_CTYPE_AURA; aq->op = NPA_AQ_INSTOP_INIT; return 0; } int otx2_pool_init(struct otx2_nic *pfvf, u16 pool_id, int stack_pages, int numptrs, int buf_size, int type) { struct page_pool_params pp_params = { 0 }; struct npa_aq_enq_req *aq; struct otx2_pool *pool; int err; pool = &pfvf->qset.pool[pool_id]; /* Alloc memory for stack which is used to store buffer pointers */ err = qmem_alloc(pfvf->dev, &pool->stack, stack_pages, pfvf->hw.stack_pg_bytes); if (err) return err; pool->rbsize = buf_size; /* Initialize this pool's context via AF */ aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox); if (!aq) { /* Shared mbox memory buffer is full, flush it and retry */ err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) { qmem_free(pfvf->dev, pool->stack); return err; } aq = otx2_mbox_alloc_msg_npa_aq_enq(&pfvf->mbox); if (!aq) { qmem_free(pfvf->dev, pool->stack); return -ENOMEM; } } aq->aura_id = pool_id; aq->pool.stack_base = pool->stack->iova; aq->pool.stack_caching = 1; aq->pool.ena = 1; aq->pool.buf_size = buf_size / 128; aq->pool.stack_max_pages = stack_pages; aq->pool.shift = ilog2(numptrs) - 8; aq->pool.ptr_start = 0; aq->pool.ptr_end = ~0ULL; /* Fill AQ info */ aq->ctype = NPA_AQ_CTYPE_POOL; aq->op = NPA_AQ_INSTOP_INIT; if (type != AURA_NIX_RQ) { pool->page_pool = NULL; return 0; } pp_params.order = get_order(buf_size); pp_params.flags = PP_FLAG_DMA_MAP; pp_params.pool_size = min(OTX2_PAGE_POOL_SZ, numptrs); pp_params.nid = NUMA_NO_NODE; pp_params.dev = pfvf->dev; pp_params.dma_dir = DMA_FROM_DEVICE; pool->page_pool = page_pool_create(&pp_params); if (IS_ERR(pool->page_pool)) { netdev_err(pfvf->netdev, "Creation of page pool failed\n"); return PTR_ERR(pool->page_pool); } return 0; } int otx2_sq_aura_pool_init(struct otx2_nic *pfvf) { int qidx, pool_id, stack_pages, num_sqbs; struct otx2_qset *qset = &pfvf->qset; struct otx2_hw *hw = &pfvf->hw; struct otx2_snd_queue *sq; struct otx2_pool *pool; dma_addr_t bufptr; int err, ptr; /* Calculate number of SQBs needed. * * For a 128byte SQE, and 4K size SQB, 31 SQEs will fit in one SQB. * Last SQE is used for pointing to next SQB. */ num_sqbs = (hw->sqb_size / 128) - 1; num_sqbs = (qset->sqe_cnt + num_sqbs) / num_sqbs; /* Get no of stack pages needed */ stack_pages = (num_sqbs + hw->stack_pg_ptrs - 1) / hw->stack_pg_ptrs; for (qidx = 0; qidx < hw->non_qos_queues; qidx++) { pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx); /* Initialize aura context */ err = otx2_aura_init(pfvf, pool_id, pool_id, num_sqbs); if (err) goto fail; /* Initialize pool context */ err = otx2_pool_init(pfvf, pool_id, stack_pages, num_sqbs, hw->sqb_size, AURA_NIX_SQ); if (err) goto fail; } /* Flush accumulated messages */ err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) goto fail; /* Allocate pointers and free them to aura/pool */ for (qidx = 0; qidx < hw->non_qos_queues; qidx++) { pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_SQ, qidx); pool = &pfvf->qset.pool[pool_id]; sq = &qset->sq[qidx]; sq->sqb_count = 0; sq->sqb_ptrs = kcalloc(num_sqbs, sizeof(*sq->sqb_ptrs), GFP_KERNEL); if (!sq->sqb_ptrs) { err = -ENOMEM; goto err_mem; } for (ptr = 0; ptr < num_sqbs; ptr++) { err = otx2_alloc_rbuf(pfvf, pool, &bufptr); if (err) goto err_mem; pfvf->hw_ops->aura_freeptr(pfvf, pool_id, bufptr); sq->sqb_ptrs[sq->sqb_count++] = (u64)bufptr; } } err_mem: return err ? -ENOMEM : 0; fail: otx2_mbox_reset(&pfvf->mbox.mbox, 0); otx2_aura_pool_free(pfvf); return err; } int otx2_rq_aura_pool_init(struct otx2_nic *pfvf) { struct otx2_hw *hw = &pfvf->hw; int stack_pages, pool_id, rq; struct otx2_pool *pool; int err, ptr, num_ptrs; dma_addr_t bufptr; num_ptrs = pfvf->qset.rqe_cnt; stack_pages = (num_ptrs + hw->stack_pg_ptrs - 1) / hw->stack_pg_ptrs; for (rq = 0; rq < hw->rx_queues; rq++) { pool_id = otx2_get_pool_idx(pfvf, AURA_NIX_RQ, rq); /* Initialize aura context */ err = otx2_aura_init(pfvf, pool_id, pool_id, num_ptrs); if (err) goto fail; } for (pool_id = 0; pool_id < hw->rqpool_cnt; pool_id++) { err = otx2_pool_init(pfvf, pool_id, stack_pages, num_ptrs, pfvf->rbsize, AURA_NIX_RQ); if (err) goto fail; } /* Flush accumulated messages */ err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) goto fail; /* Allocate pointers and free them to aura/pool */ for (pool_id = 0; pool_id < hw->rqpool_cnt; pool_id++) { pool = &pfvf->qset.pool[pool_id]; for (ptr = 0; ptr < num_ptrs; ptr++) { err = otx2_alloc_rbuf(pfvf, pool, &bufptr); if (err) return -ENOMEM; pfvf->hw_ops->aura_freeptr(pfvf, pool_id, bufptr + OTX2_HEAD_ROOM); } } return 0; fail: otx2_mbox_reset(&pfvf->mbox.mbox, 0); otx2_aura_pool_free(pfvf); return err; } int otx2_config_npa(struct otx2_nic *pfvf) { struct otx2_qset *qset = &pfvf->qset; struct npa_lf_alloc_req *npalf; struct otx2_hw *hw = &pfvf->hw; int aura_cnt; /* Pool - Stack of free buffer pointers * Aura - Alloc/frees pointers from/to pool for NIX DMA. */ if (!hw->pool_cnt) return -EINVAL; qset->pool = devm_kcalloc(pfvf->dev, hw->pool_cnt, sizeof(struct otx2_pool), GFP_KERNEL); if (!qset->pool) return -ENOMEM; /* Get memory to put this msg */ npalf = otx2_mbox_alloc_msg_npa_lf_alloc(&pfvf->mbox); if (!npalf) return -ENOMEM; /* Set aura and pool counts */ npalf->nr_pools = hw->pool_cnt; aura_cnt = ilog2(roundup_pow_of_two(hw->pool_cnt)); npalf->aura_sz = (aura_cnt >= ilog2(128)) ? (aura_cnt - 6) : 1; return otx2_sync_mbox_msg(&pfvf->mbox); } int otx2_detach_resources(struct mbox *mbox) { struct rsrc_detach *detach; mutex_lock(&mbox->lock); detach = otx2_mbox_alloc_msg_detach_resources(mbox); if (!detach) { mutex_unlock(&mbox->lock); return -ENOMEM; } /* detach all */ detach->partial = false; /* Send detach request to AF */ otx2_sync_mbox_msg(mbox); mutex_unlock(&mbox->lock); return 0; } EXPORT_SYMBOL(otx2_detach_resources); int otx2_attach_npa_nix(struct otx2_nic *pfvf) { struct rsrc_attach *attach; struct msg_req *msix; int err; mutex_lock(&pfvf->mbox.lock); /* Get memory to put this msg */ attach = otx2_mbox_alloc_msg_attach_resources(&pfvf->mbox); if (!attach) { mutex_unlock(&pfvf->mbox.lock); return -ENOMEM; } attach->npalf = true; attach->nixlf = true; /* Send attach request to AF */ err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) { mutex_unlock(&pfvf->mbox.lock); return err; } pfvf->nix_blkaddr = BLKADDR_NIX0; /* If the platform has two NIX blocks then LF may be * allocated from NIX1. */ if (otx2_read64(pfvf, RVU_PF_BLOCK_ADDRX_DISC(BLKADDR_NIX1)) & 0x1FFULL) pfvf->nix_blkaddr = BLKADDR_NIX1; /* Get NPA and NIX MSIX vector offsets */ msix = otx2_mbox_alloc_msg_msix_offset(&pfvf->mbox); if (!msix) { mutex_unlock(&pfvf->mbox.lock); return -ENOMEM; } err = otx2_sync_mbox_msg(&pfvf->mbox); if (err) { mutex_unlock(&pfvf->mbox.lock); return err; } mutex_unlock(&pfvf->mbox.lock); if (pfvf->hw.npa_msixoff == MSIX_VECTOR_INVALID || pfvf->hw.nix_msixoff == MSIX_VECTOR_INVALID) { dev_err(pfvf->dev, "RVUPF: Invalid MSIX vector offset for NPA/NIX\n"); return -EINVAL; } return 0; } EXPORT_SYMBOL(otx2_attach_npa_nix); void otx2_ctx_disable(struct mbox *mbox, int type, bool npa) { struct hwctx_disable_req *req; mutex_lock(&mbox->lock); /* Request AQ to disable this context */ if (npa) req = otx2_mbox_alloc_msg_npa_hwctx_disable(mbox); else req = otx2_mbox_alloc_msg_nix_hwctx_disable(mbox); if (!req) { mutex_unlock(&mbox->lock); return; } req->ctype = type; if (otx2_sync_mbox_msg(mbox)) dev_err(mbox->pfvf->dev, "%s failed to disable context\n", __func__); mutex_unlock(&mbox->lock); } int otx2_nix_config_bp(struct otx2_nic *pfvf, bool enable) { struct nix_bp_cfg_req *req; if (enable) req = otx2_mbox_alloc_msg_nix_bp_enable(&pfvf->mbox); else req = otx2_mbox_alloc_msg_nix_bp_disable(&pfvf->mbox); if (!req) return -ENOMEM; req->chan_base = 0; #ifdef CONFIG_DCB req->chan_cnt = pfvf->pfc_en ? IEEE_8021QAZ_MAX_TCS : 1; req->bpid_per_chan = pfvf->pfc_en ? 1 : 0; #else req->chan_cnt = 1; req->bpid_per_chan = 0; #endif return otx2_sync_mbox_msg(&pfvf->mbox); } EXPORT_SYMBOL(otx2_nix_config_bp); /* Mbox message handlers */ void mbox_handler_cgx_stats(struct otx2_nic *pfvf, struct cgx_stats_rsp *rsp) { int id; for (id = 0; id < CGX_RX_STATS_COUNT; id++) pfvf->hw.cgx_rx_stats[id] = rsp->rx_stats[id]; for (id = 0; id < CGX_TX_STATS_COUNT; id++) pfvf->hw.cgx_tx_stats[id] = rsp->tx_stats[id]; } void mbox_handler_cgx_fec_stats(struct otx2_nic *pfvf, struct cgx_fec_stats_rsp *rsp) { pfvf->hw.cgx_fec_corr_blks += rsp->fec_corr_blks; pfvf->hw.cgx_fec_uncorr_blks += rsp->fec_uncorr_blks; } void mbox_handler_npa_lf_alloc(struct otx2_nic *pfvf, struct npa_lf_alloc_rsp *rsp) { pfvf->hw.stack_pg_ptrs = rsp->stack_pg_ptrs; pfvf->hw.stack_pg_bytes = rsp->stack_pg_bytes; } EXPORT_SYMBOL(mbox_handler_npa_lf_alloc); void mbox_handler_nix_lf_alloc(struct otx2_nic *pfvf, struct nix_lf_alloc_rsp *rsp) { pfvf->hw.sqb_size = rsp->sqb_size; pfvf->hw.rx_chan_base = rsp->rx_chan_base; pfvf->hw.tx_chan_base = rsp->tx_chan_base; pfvf->hw.lso_tsov4_idx = rsp->lso_tsov4_idx; pfvf->hw.lso_tsov6_idx = rsp->lso_tsov6_idx; pfvf->hw.cgx_links = rsp->cgx_links; pfvf->hw.lbk_links = rsp->lbk_links; pfvf->hw.tx_link = rsp->tx_link; } EXPORT_SYMBOL(mbox_handler_nix_lf_alloc); void mbox_handler_msix_offset(struct otx2_nic *pfvf, struct msix_offset_rsp *rsp) { pfvf->hw.npa_msixoff = rsp->npa_msixoff; pfvf->hw.nix_msixoff = rsp->nix_msixoff; } EXPORT_SYMBOL(mbox_handler_msix_offset); void mbox_handler_nix_bp_enable(struct otx2_nic *pfvf, struct nix_bp_cfg_rsp *rsp) { int chan, chan_id; for (chan = 0; chan < rsp->chan_cnt; chan++) { chan_id = ((rsp->chan_bpid[chan] >> 10) & 0x7F); pfvf->bpid[chan_id] = rsp->chan_bpid[chan] & 0x3FF; } } EXPORT_SYMBOL(mbox_handler_nix_bp_enable); void otx2_free_cints(struct otx2_nic *pfvf, int n) { struct otx2_qset *qset = &pfvf->qset; struct otx2_hw *hw = &pfvf->hw; int irq, qidx; for (qidx = 0, irq = hw->nix_msixoff + NIX_LF_CINT_VEC_START; qidx < n; qidx++, irq++) { int vector = pci_irq_vector(pfvf->pdev, irq); irq_set_affinity_hint(vector, NULL); free_cpumask_var(hw->affinity_mask[irq]); free_irq(vector, &qset->napi[qidx]); } } void otx2_set_cints_affinity(struct otx2_nic *pfvf) { struct otx2_hw *hw = &pfvf->hw; int vec, cpu, irq, cint; vec = hw->nix_msixoff + NIX_LF_CINT_VEC_START; cpu = cpumask_first(cpu_online_mask); /* CQ interrupts */ for (cint = 0; cint < pfvf->hw.cint_cnt; cint++, vec++) { if (!alloc_cpumask_var(&hw->affinity_mask[vec], GFP_KERNEL)) return; cpumask_set_cpu(cpu, hw->affinity_mask[vec]); irq = pci_irq_vector(pfvf->pdev, vec); irq_set_affinity_hint(irq, hw->affinity_mask[vec]); cpu = cpumask_next(cpu, cpu_online_mask); if (unlikely(cpu >= nr_cpu_ids)) cpu = 0; } } static u32 get_dwrr_mtu(struct otx2_nic *pfvf, struct nix_hw_info *hw) { if (is_otx2_lbkvf(pfvf->pdev)) { pfvf->hw.smq_link_type = SMQ_LINK_TYPE_LBK; return hw->lbk_dwrr_mtu; } pfvf->hw.smq_link_type = SMQ_LINK_TYPE_RPM; return hw->rpm_dwrr_mtu; } u16 otx2_get_max_mtu(struct otx2_nic *pfvf) { struct nix_hw_info *rsp; struct msg_req *req; u16 max_mtu; int rc; mutex_lock(&pfvf->mbox.lock); req = otx2_mbox_alloc_msg_nix_get_hw_info(&pfvf->mbox); if (!req) { rc = -ENOMEM; goto out; } rc = otx2_sync_mbox_msg(&pfvf->mbox); if (!rc) { rsp = (struct nix_hw_info *) otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr); /* HW counts VLAN insertion bytes (8 for double tag) * irrespective of whether SQE is requesting to insert VLAN * in the packet or not. Hence these 8 bytes have to be * discounted from max packet size otherwise HW will throw * SMQ errors */ max_mtu = rsp->max_mtu - 8 - OTX2_ETH_HLEN; /* Also save DWRR MTU, needed for DWRR weight calculation */ pfvf->hw.dwrr_mtu = get_dwrr_mtu(pfvf, rsp); if (!pfvf->hw.dwrr_mtu) pfvf->hw.dwrr_mtu = 1; } out: mutex_unlock(&pfvf->mbox.lock); if (rc) { dev_warn(pfvf->dev, "Failed to get MTU from hardware setting default value(1500)\n"); max_mtu = 1500; } return max_mtu; } EXPORT_SYMBOL(otx2_get_max_mtu); int otx2_handle_ntuple_tc_features(struct net_device *netdev, netdev_features_t features) { netdev_features_t changed = features ^ netdev->features; struct otx2_nic *pfvf = netdev_priv(netdev); bool ntuple = !!(features & NETIF_F_NTUPLE); bool tc = !!(features & NETIF_F_HW_TC); if ((changed & NETIF_F_NTUPLE) && !ntuple) otx2_destroy_ntuple_flows(pfvf); if ((changed & NETIF_F_NTUPLE) && ntuple) { if (!pfvf->flow_cfg->max_flows) { netdev_err(netdev, "Can't enable NTUPLE, MCAM entries not allocated\n"); return -EINVAL; } } if ((changed & NETIF_F_HW_TC) && !tc && otx2_tc_flower_rule_cnt(pfvf)) { netdev_err(netdev, "Can't disable TC hardware offload while flows are active\n"); return -EBUSY; } if ((changed & NETIF_F_NTUPLE) && ntuple && otx2_tc_flower_rule_cnt(pfvf) && !(changed & NETIF_F_HW_TC)) { netdev_err(netdev, "Can't enable NTUPLE when TC flower offload is active, disable TC rules and retry\n"); return -EINVAL; } return 0; } EXPORT_SYMBOL(otx2_handle_ntuple_tc_features); #define M(_name, _id, _fn_name, _req_type, _rsp_type) \ int __weak \ otx2_mbox_up_handler_ ## _fn_name(struct otx2_nic *pfvf, \ struct _req_type *req, \ struct _rsp_type *rsp) \ { \ /* Nothing to do here */ \ return 0; \ } \ EXPORT_SYMBOL(otx2_mbox_up_handler_ ## _fn_name); MBOX_UP_CGX_MESSAGES MBOX_UP_MCS_MESSAGES #undef M
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