/* *------------------------------------------------------------------ * Copyright (c) 2018 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------ */ #include #include #include #include #include #define AVF_MBOX_LEN 64 #define AVF_MBOX_BUF_SZ 512 #define AVF_RXQ_SZ 512 #define AVF_TXQ_SZ 512 #define AVF_ITR_INT 8160 #define PCI_VENDOR_ID_INTEL 0x8086 #define PCI_DEVICE_ID_INTEL_AVF 0x1889 #define PCI_DEVICE_ID_INTEL_X710_VF 0x154c #define PCI_DEVICE_ID_INTEL_X722_VF 0x37cd avf_main_t avf_main; static pci_device_id_t avf_pci_device_ids[] = { {.vendor_id = PCI_VENDOR_ID_INTEL,.device_id = PCI_DEVICE_ID_INTEL_AVF}, {.vendor_id = PCI_VENDOR_ID_INTEL,.device_id = PCI_DEVICE_ID_INTEL_X710_VF}, {.vendor_id = PCI_VENDOR_ID_INTEL,.device_id = PCI_DEVICE_ID_INTEL_X722_VF}, {0}, }; static inline void avf_irq_0_disable (avf_device_t * ad) { u32 dyn_ctl0 = 0, icr0_ena = 0; dyn_ctl0 |= (3 << 3); /* 11b = No ITR update */ avf_reg_write (ad, AVFINT_ICR0_ENA1, icr0_ena); avf_reg_write (ad, AVFINT_DYN_CTL0, dyn_ctl0); avf_reg_flush (ad); } static inline void avf_irq_0_enable (avf_device_t * ad) { u32 dyn_ctl0 = 0, icr0_ena = 0; icr0_ena |= (1 << 30); /* [30] Admin Queue Enable */ dyn_ctl0 |= (1 << 0); /* [0] Interrupt Enable */ dyn_ctl0 |= (1 << 1); /* [1] Clear PBA */ //dyn_ctl0 |= (3 << 3); /* [4:3] ITR Index, 11b = No ITR update */ dyn_ctl0 |= ((AVF_ITR_INT / 2) << 5); /* [16:5] ITR Interval in 2us steps */ avf_irq_0_disable (ad); avf_reg_write (ad, AVFINT_ICR0_ENA1, icr0_ena); avf_reg_write (ad, AVFINT_DYN_CTL0, dyn_ctl0); avf_reg_flush (ad); } static inline void avf_irq_n_disable (avf_device_t * ad, u8 line) { u32 dyn_ctln = 0; avf_reg_write (ad, AVFINT_DYN_CTLN (line), dyn_ctln); avf_reg_flush (ad); } static inline void avf_irq_n_enable (avf_device_t * ad, u8 line) { u32 dyn_ctln = 0; dyn_ctln |= (1 << 0); /* [0] Interrupt Enable */ dyn_ctln |= (1 << 1); /* [1] Clear PBA */ dyn_ctln |= ((AVF_ITR_INT / 2) << 5); /* [16:5] ITR Interval in 2us steps */ avf_irq_n_disable (ad, line); avf_reg_write (ad, AVFINT_DYN_CTLN (line), dyn_ctln); avf_reg_flush (ad); } clib_error_t * avf_aq_desc_enq (vlib_main_t * vm, avf_device_t * ad, avf_aq_desc_t * dt, void *data, int len) { avf_main_t *am = &avf_main; clib_error_t *err = 0; avf_aq_desc_t *d, dc; int n_retry = 5; d = &ad->atq[ad->atq_next_slot]; clib_memcpy (d, dt, sizeof (avf_aq_desc_t)); d->flags |= AVF_AQ_F_RD | AVF_AQ_F_SI; if (len) d->datalen = len; if (len) { u64 pa; pa = ad->atq_bufs_pa + ad->atq_next_slot * AVF_MBOX_BUF_SZ; d->addr_hi = (u32) (pa >> 32); d->addr_lo = (u32) pa; clib_memcpy (ad->atq_bufs + ad->atq_next_slot * AVF_MBOX_BUF_SZ, data, len); d->flags |= AVF_AQ_F_BUF; } if (ad->flags & AVF_DEVICE_F_ELOG) clib_memcpy (&dc, d, sizeof (avf_aq_desc_t)); CLIB_MEMORY_BARRIER (); vlib_log_debug (am->log_class, "%U", format_hexdump, data, len); ad->atq_next_slot = (ad->atq_next_slot + 1) % AVF_MBOX_LEN; avf_reg_write (ad, AVF_ATQT, ad->atq_next_slot); avf_reg_flush (ad); retry: vlib_process_suspend (vm, 10e-6); if (((d->flags & AVF_AQ_F_DD) == 0) || ((d->flags & AVF_AQ_F_CMP) == 0)) { if (--n_retry == 0) { err = clib_error_return (0, "adminq enqueue timeout [opcode 0x%x]", d->opcode); goto done; } goto retry; } clib_memcpy (dt, d, sizeof (avf_aq_desc_t)); if (d->flags & AVF_AQ_F_ERR) return clib_error_return (0, "adminq enqueue error [opcode 0x%x, retval " "%d]", d->opcode, d->retval); done: if (ad->flags & AVF_DEVICE_F_ELOG) { /* *INDENT-OFF* */ ELOG_TYPE_DECLARE (el) = { .format = "avf[%d] aq enq: s_flags 0x%x r_flags 0x%x opcode 0x%x " "datalen %d retval %d", .format_args = "i4i2i2i2i2i2", }; struct { u32 dev_instance; u16 s_flags; u16 r_flags; u16 opcode; u16 datalen; u16 retval; } *ed; ed = ELOG_DATA (&vm->elog_main, el); ed->dev_instance = ad->dev_instance; ed->s_flags = dc.flags; ed->r_flags = d->flags; ed->opcode = dc.opcode; ed->datalen = dc.datalen; ed->retval = d->retval; /* *INDENT-ON* */ } return err; } clib_error_t * avf_cmd_rx_ctl_reg_write (vlib_main_t * vm, avf_device_t * ad, u32 reg, u32 val) { clib_error_t *err; avf_aq_desc_t d = {.opcode = 0x207,.param1 = reg,.param3 = val }; err = avf_aq_desc_enq (vm, ad, &d, 0, 0); if (ad->flags & AVF_DEVICE_F_ELOG) { /* *INDENT-OFF* */ ELOG_TYPE_DECLARE (el) = { .format = "avf[%d] rx ctl reg write: reg 0x%x val 0x%x ", .format_args = "i4i4i4", }; struct { u32 dev_instance; u32 reg; u32 val; } *ed; ed = ELOG_DATA (&vm->elog_main, el); ed->dev_instance = ad->dev_instance; ed->reg = reg; ed->val = val; /* *INDENT-ON* */ } return err; } clib_error_t * avf_rxq_init (vlib_main_t * vm, avf_device_t * ad, u16 qid, u16 rxq_size) { clib_error_t *err; avf_rxq_t *rxq; u32 n_alloc, i; vec_validate_aligned (ad->rxqs, qid, CLIB_CACHE_LINE_BYTES); rxq = vec_elt_at_index (ad->rxqs, qid); rxq->size = rxq_size; rxq->next = 0; rxq->descs = vlib_physmem_alloc_aligned (vm, rxq->size * sizeof (avf_rx_desc_t), 2 * CLIB_CACHE_LINE_BYTES); if (rxq->descs == 0) return vlib_physmem_last_error (vm); if ((err = vlib_pci_map_dma (vm, ad->pci_dev_handle, (void *) rxq->descs))) return err; clib_memset ((void *) rxq->descs, 0, rxq->size * sizeof (avf_rx_desc_t)); vec_validate_aligned (rxq->bufs, rxq->size, CLIB_CACHE_LINE_BYTES); rxq->qrx_tail = ad->bar0 + AVF_QRX_TAIL (qid); n_alloc = vlib_buffer_alloc (vm, rxq->bufs, rxq->size - 8); if (n_alloc == 0) return clib_error_return (0, "buffer allocation error"); rxq->n_enqueued = n_alloc; avf_rx_desc_t *d = rxq->descs; for (i = 0; i < n_alloc; i++) { vlib_buffer_t *b = vlib_get_buffer (vm, rxq->bufs[i]); if (ad->flags & AVF_DEVICE_F_VA_DMA) d->qword[0] = vlib_buffer_get_va (b); else d->qword[0] = vlib_buffer_get_pa (vm, b); d++; } ad->n_rx_queues = clib_min (ad->num_queue_pairs, qid + 1); return 0; } clib_error_t * avf_txq_init (vlib_main_t * vm, avf_device_t * ad, u16 qid, u16 txq_size) { clib_error_t *err; avf_txq_t *txq; if (qid >= ad->num_queue_pairs) { qid = qid % ad->num_queue_pairs; txq = vec_elt_at_index (ad->txqs, qid); if (txq->lock == 0) clib_spinlock_init (&txq->lock); ad->flags |= AVF_DEVICE_F_SHARED_TXQ_LOCK; return 0; } vec_validate_aligned (ad->txqs, qid, CLIB_CACHE_LINE_BYTES); txq = vec_elt_at_index (ad->txqs, qid); txq->size = txq_size; txq->next = 0; txq->descs = vlib_physmem_alloc_aligned (vm, txq->size * sizeof (avf_tx_desc_t), 2 * CLIB_CACHE_LINE_BYTES); if (txq->descs == 0) return vlib_physmem_last_error (vm); if ((err = vlib_pci_map_dma (vm, ad->pci_dev_handle, (void *) txq->descs))) return err; vec_validate_aligned (txq->bufs, txq->size, CLIB_CACHE_LINE_BYTES); txq->qtx_tail = ad->bar0 + AVF_QTX_TAIL (qid); ad->n_tx_queues = clib_min (ad->num_queue_pairs, qid + 1); return 0; } typedef struct { u16 vsi_id; u16 flags; } virtchnl_promisc_info_t; void avf_arq_slot_init (avf_device_t * ad, u16 slot) { avf_aq_desc_t *d; u64 pa = ad->arq_bufs_pa + slot * AVF_MBOX_BUF_SZ; d = &ad->arq[slot]; clib_memset (d, 0, sizeof (avf_aq_desc_t)); d->flags = AVF_AQ_F_BUF; d->datalen = AVF_MBOX_BUF_SZ; d->addr_hi = (u32) (pa >> 32); d->addr_lo = (u32) pa; } static inline uword avf_dma_addr (vlib_main_t * vm, avf_device_t * ad, void *p) { return (ad->flags & AVF_DEVICE_F_VA_DMA) ? pointer_to_uword (p) : vlib_physmem_get_pa (vm, p); } static void avf_adminq_init (vlib_main_t * vm, avf_device_t * ad) { u64 pa; int i; /* VF MailBox Transmit */ clib_memset (ad->atq, 0, sizeof (avf_aq_desc_t) * AVF_MBOX_LEN); ad->atq_bufs_pa = avf_dma_addr (vm, ad, ad->atq_bufs); pa = avf_dma_addr (vm, ad, ad->atq); avf_reg_write (ad, AVF_ATQT, 0); /* Tail */ avf_reg_write (ad, AVF_ATQH, 0); /* Head */ avf_reg_write (ad, AVF_ATQLEN, AVF_MBOX_LEN | (1ULL << 31)); /* len & ena */ avf_reg_write (ad, AVF_ATQBAL, (u32) pa); /* Base Address Low */ avf_reg_write (ad, AVF_ATQBAH, (u32) (pa >> 32)); /* Base Address High */ /* VF MailBox Receive */ clib_memset (ad->arq, 0, sizeof (avf_aq_desc_t) * AVF_MBOX_LEN); ad->arq_bufs_pa = avf_dma_addr (vm, ad, ad->arq_bufs); for (i = 0; i < AVF_MBOX_LEN; i++) avf_arq_slot_init (ad, i); pa = avf_dma_addr (vm, ad, ad->arq); avf_reg_write (ad, AVF_ARQH, 0); /* Head */ avf_reg_write (ad, AVF_ARQT, 0); /* Head */ avf_reg_write (ad, AVF_ARQLEN, AVF_MBOX_LEN | (1ULL << 31)); /* len & ena */ avf_reg_write (ad, AVF_ARQBAL, (u32) pa); /* Base Address Low */ avf_reg_write (ad, AVF_ARQBAH, (u32) (pa >> 32)); /* Base Address High */ avf_reg_write (ad, AVF_ARQT, AVF_MBOX_LEN - 1); /* Tail */ ad->atq_next_slot = 0; ad->arq_next_slot = 0; } clib_error_t * avf_send_to_pf (vlib_main_t * vm, avf_device_t * ad, virtchnl_ops_t op, void *in, int in_len, void *out, int out_len) { clib_error_t *err; avf_aq_desc_t *d, dt = {.opcode = 0x801,.v_opcode = op }; u32 head; int n_retry = 5; /* supppres interrupt in the next adminq receive slot as we are going to wait for response we only need interrupts when event is received */ d = &ad->arq[ad->arq_next_slot]; d->flags |= AVF_AQ_F_SI; if ((err = avf_aq_desc_enq (vm, ad, &dt, in, in_len))) return err; retry: head = avf_get_u32 (ad->bar0, AVF_ARQH); if (ad->arq_next_slot == head) { if (--n_retry == 0) return clib_error_return (0, "timeout"); vlib_process_suspend (vm, 10e-3); goto retry; } d = &ad->arq[ad->arq_next_slot]; if (d->v_opcode == VIRTCHNL_OP_EVENT) { void *buf = ad->arq_bufs + ad->arq_next_slot * AVF_MBOX_BUF_SZ; virtchnl_pf_event_t *e; if ((d->datalen != sizeof (virtchnl_pf_event_t)) || ((d->flags & AVF_AQ_F_BUF) == 0)) return clib_error_return (0, "event message error"); vec_add2 (ad->events, e, 1); clib_memcpy (e, buf, sizeof (virtchnl_pf_event_t)); avf_arq_slot_init (ad, ad->arq_next_slot); ad->arq_next_slot++; n_retry = 5; goto retry; } if (d->v_opcode != op) { err = clib_error_return (0, "unexpected message receiver [v_opcode = %u, " "expected %u, v_retval %d]", d->v_opcode, op, d->v_retval); goto done; } if (d->v_retval) { err = clib_error_return (0, "error [v_opcode = %u, v_retval %d]", d->v_opcode, d->v_retval); goto done; } if (d->flags & AVF_AQ_F_BUF) { void *buf = ad->arq_bufs + ad->arq_next_slot * AVF_MBOX_BUF_SZ; clib_memcpy (out, buf, out_len); } avf_arq_slot_init (ad, ad->arq_next_slot); avf_reg_write (ad, AVF_ARQT, ad->arq_next_slot); avf_reg_flush (ad); ad->arq_next_slot = (ad->arq_next_slot + 1) % AVF_MBOX_LEN; done: if (ad->flags & AVF_DEVICE_F_ELOG) { /* *INDENT-OFF* */ ELOG_TYPE_DECLARE (el) = { .format = "avf[%d] send to pf: v_opcode %s (%d) v_retval 0x%x", .format_args = "i4t4i4i4", .n_enum_strings = VIRTCHNL_N_OPS, .enum_strings = { #define _(v, n) [v] = #n, foreach_virtchnl_op #undef _ }, }; struct { u32 dev_instance; u32 v_opcode; u32 v_opcode_val; u32 v_retval; } *ed; ed = ELOG_DATA (&vm->elog_main, el); ed->dev_instance = ad->dev_instance; ed->v_opcode = op; ed->v_opcode_val = op; ed->v_retval = d->v_retval; /* *INDENT-ON* */ } return err; } clib_error_t * avf_op_version (vlib_main_t * vm, avf_device_t * ad, virtchnl_version_info_t * ver) { clib_error_t *err = 0; virtchnl_version_info_t myver = { .major = VIRTCHNL_VERSION_MAJOR, .minor = VIRTCHNL_VERSION_MINOR, }; err = avf_send_to_pf (vm, ad, VIRTCHNL_OP_VERSION, &myver, sizeof (virtchnl_version_info_t), ver, sizeof (virtchnl_version_info_t)); if (err) return err; return err; } clib_error_t * avf_op_get_vf_resources (vlib_main_t * vm, avf_device_t * ad, virtchnl_vf_resource_t * res) { u32 bitmap = (VIRTCHNL_VF_OFFLOAD_L2 | VIRTCHNL_VF_OFFLOAD_RSS_PF | VIRTCHNL_VF_OFFLOAD_WB_ON_ITR | VIRTCHNL_VF_OFFLOAD_VLAN | VIRTCHNL_VF_OFFLOAD_RX_POLLING); return avf_send_to_pf (vm, ad, VIRTCHNL_OP_GET_VF_RESOURCES, &bitmap, sizeof (u32), res, sizeof (virtchnl_vf_resource_t)); } clib_error_t * avf_op_config_rss_lut (vlib_main_t * vm, avf_device_t * ad) { int msg_len = sizeof (virtchnl_rss_lut_t) + ad->rss_lut_size - 1; int i; u8 msg[msg_len]; virtchnl_rss_lut_t *rl; clib_memset (msg, 0, msg_len); rl = (virtchnl_rss_lut_t *) msg; rl->vsi_id = ad->vsi_id; rl->lut_entries = ad->rss_lut_size; for (i = 0; i < ad->rss_lut_size; i++) rl->lut[i] = i % ad->n_rx_queues; return avf_send_to_pf (vm, ad, VIRTCHNL_OP_CONFIG_RSS_LUT, msg, msg_len, 0, 0); } clib_error_t * avf_op_config_rss_key (vlib_main_t * vm, avf_device_t * ad) { int msg_len = sizeof (virtchnl_rss_key_t) + ad->rss_key_size - 1; int i; u8 msg[msg_len]; virtchnl_rss_key_t *rk; clib_memset (msg, 0, msg_len); rk = (virtchnl_rss_key_t *) msg; rk->vsi_id = ad->vsi_id; rk->key_len = ad->rss_key_size; u32 seed = random_default_seed (); for (i = 0; i < ad->rss_key_size; i++) rk->key[i] = (u8) random_u32 (&seed); return avf_send_to_pf (vm, ad, VIRTCHNL_OP_CONFIG_RSS_KEY, msg, msg_len, 0, 0); } clib_error_t * avf_op_disable_vlan_stripping (vlib_main_t * vm, avf_device_t * ad) { return avf_send_to_pf (vm, ad, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING, 0, 0, 0, 0); } clib_error_t * avf_config_promisc_mode (vlib_main_t * vm, avf_device_t * ad) { virtchnl_promisc_info_t pi = { 0 }; pi.vsi_id = ad->vsi_id; pi.flags = 1; return avf_send_to_pf (vm, ad, VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE, &pi, sizeof (virtchnl_promisc_info_t), 0, 0); } clib_error_t * avf_op_config_vsi_queues (vlib_main_t * vm, avf_device_t * ad) { int i; int n_qp = clib_max (vec_len (ad->rxqs), vec_len (ad->txqs)); int msg_len = sizeof (virtchnl_vsi_queue_config_info_t) + n_qp * sizeof (virtchnl_queue_pair_info_t); u8 msg[msg_len]; virtchnl_vsi_queue_config_info_t *ci; clib_memset (msg, 0, msg_len); ci = (virtchnl_vsi_queue_config_info_t *) msg; ci->vsi_id = ad->vsi_id; ci->num_queue_pairs = n_qp; for (i = 0; i < n_qp; i++) { virtchnl_txq_info_t *txq = &ci->qpair[i].txq; virtchnl_rxq_info_t *rxq = &ci->qpair[i].rxq; rxq->vsi_id = ad->vsi_id; rxq->queue_id = i; rxq->max_pkt_size = 1518; if (i < vec_len (ad->rxqs)) { avf_rxq_t *q = vec_elt_at_index (ad->rxqs, i); rxq->ring_len = q->size; rxq->databuffer_size = VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES; rxq->dma_ring_addr = avf_dma_addr (vm, ad, (void *) q->descs); avf_reg_write (ad, AVF_QRX_TAIL (i), q->size - 1); } avf_txq_t *q = vec_elt_at_index (ad->txqs, i); txq->vsi_id = ad->vsi_id; if (i < vec_len (ad->txqs)) { txq->queue_id = i; txq->ring_len = q->size; txq->dma_ring_addr = avf_dma_addr (vm, ad, (void *) q->descs); } } return avf_send_to_pf (vm, ad, VIRTCHNL_OP_CONFIG_VSI_QUEUES, msg, msg_len, 0, 0); } clib_error_t * avf_op_config_irq_map (vlib_main_t * vm, avf_device_t * ad) { int count = 1; int msg_len = sizeof (virtchnl_irq_map_info_t) + count * sizeof (virtchnl_vector_map_t); u8 msg[msg_len]; virtchnl_irq_map_info_t *imi; clib_memset (msg, 0, msg_len); imi = (virtchnl_irq_map_info_t *) msg; imi->num_vectors = count; imi->vecmap[0].vector_id = 1; imi->vecmap[0].vsi_id = ad->vsi_id; imi->vecmap[0].rxq_map = 1; return avf_send_to_pf (vm, ad, VIRTCHNL_OP_CONFIG_IRQ_MAP, msg, msg_len, 0, 0); } clib_error_t * avf_op_add_eth_addr (vlib_main_t * vm, avf_device_t * ad, u8 count, u8 * macs) { int msg_len = sizeof (virtchnl_ether_addr_list_t) + count * sizeof (virtchnl_ether_addr_t); u8 msg[msg_len]; virtchnl_ether_addr_list_t *al; int i; clib_memset (msg, 0, msg_len); al = (virtchnl_ether_addr_list_t *) msg; al->vsi_id = ad->vsi_id; al->num_elements = count; for (i = 0; i < count; i++) clib_memcpy (&al->list[i].addr, macs + i * 6, 6); return avf_send_to_pf (vm, ad, VIRTCHNL_OP_ADD_ETH_ADDR, msg, msg_len, 0, 0); } clib_error_t * avf_op_enable_queues (vlib_main_t * vm, avf_device_t * ad, u32 rx, u32 tx) { virtchnl_queue_select_t qs = { 0 }; int i; qs.vsi_id = ad->vsi_id; qs.rx_queues = rx; qs.tx_queues = tx; for (i = 0; i < ad->n_rx_queues; i++) { avf_rxq_t *rxq = vec_elt_at_index (ad->rxqs, i); avf_reg_write (ad, AVF_QRX_TAIL (i), rxq->n_enqueued); } return avf_send_to_pf (vm, ad, VIRTCHNL_OP_ENABLE_QUEUES, &qs, sizeof (virtchnl_queue_select_t), 0, 0); } clib_error_t * avf_op_get_stats (vlib_main_t * vm, avf_device_t * ad, virtchnl_eth_stats_t * es) { virtchnl_queue_select_t qs = { 0 }; qs.vsi_id = ad->vsi_id; return avf_send_to_pf (vm, ad, VIRTCHNL_OP_GET_STATS, &qs, sizeof (virtchnl_queue_select_t), es, sizeof (virtchnl_eth_stats_t)); } clib_error_t * avf_device_reset (vlib_main_t * vm, avf_device_t * ad) { avf_aq_desc_t d = { 0 }; clib_error_t *error; u32 rstat; int n_retry = 20; d.opcode = 0x801; d.v_opcode = VIRTCHNL_OP_RESET_VF; if ((error = avf_aq_desc_enq (vm, ad, &d, 0, 0))) return error; retry: vlib_process_suspend (vm, 10e-3); rstat = avf_get_u32 (ad->bar0, AVFGEN_RSTAT); if (rstat == 2 || rstat == 3) return 0; if (--n_retry == 0) return clib_error_return (0, "reset failed (timeout)"); goto retry; } clib_error_t * avf_request_queues (vlib_main_t * vm, avf_device_t * ad, u16 num_queue_pairs) { virtchnl_vf_res_request_t res_req = { 0 }; clib_error_t *error; u32 rstat; int n_retry = 20; res_req.num_queue_pairs = num_queue_pairs; error = avf_send_to_pf (vm, ad, VIRTCHNL_OP_REQUEST_QUEUES, &res_req, sizeof (virtchnl_vf_res_request_t), &res_req, sizeof (virtchnl_vf_res_request_t)); /* * if PF respondes, the request failed * else PF initializes restart and avf_send_to_pf returns an error */ if (!error) { return clib_error_return (0, "requested more than %u queue pairs", res_req.num_queue_pairs); } retry: vlib_process_suspend (vm, 10e-3); rstat = avf_get_u32 (ad->bar0, AVFGEN_RSTAT); if ((rstat == VIRTCHNL_VFR_COMPLETED) || (rstat == VIRTCHNL_VFR_VFACTIVE)) goto done; if (--n_retry == 0) return clib_error_return (0, "reset failed (timeout)"); goto retry; done: return NULL; } clib_error_t * avf_device_init (vlib_main_t * vm, avf_main_t * am, avf_device_t * ad, avf_create_if_args_t * args) { virtchnl_version_info_t ver = { 0 }; virtchnl_vf_resource_t res = { 0 }; clib_error_t *error; vlib_thread_main_t *tm = vlib_get_thread_main (); int i; avf_adminq_init (vm, ad); /* request more queues only if we need them */ if ((error = avf_request_queues (vm, ad, tm->n_vlib_mains))) { /* we failed to get more queues, but still we want to proceed */ clib_error_free (error); if ((error = avf_device_reset (vm, ad))) return error; } avf_adminq_init (vm, ad); /* * OP_VERSION */ if ((error = avf_op_version (vm, ad, &ver))) return error; if (ver.major != VIRTCHNL_VERSION_MAJOR || ver.minor != VIRTCHNL_VERSION_MINOR) return clib_error_return (0, "incompatible protocol version " "(remote %d.%d)", ver.major, ver.minor); /* * OP_GET_VF_RESOUCES */ if ((error = avf_op_get_vf_resources (vm, ad, &res))) return error; if (res.num_vsis != 1 || res.vsi_res[0].vsi_type != VIRTCHNL_VSI_SRIOV) return clib_error_return (0, "unexpected GET_VF_RESOURCE reply received"); ad->vsi_id = res.vsi_res[0].vsi_id; ad->feature_bitmap = res.vf_offload_flags; ad->num_queue_pairs = res.num_queue_pairs; ad->max_vectors = res.max_vectors; ad->max_mtu = res.max_mtu; ad->rss_key_size = res.rss_key_size; ad->rss_lut_size = res.rss_lut_size; clib_memcpy (ad->hwaddr, res.vsi_res[0].default_mac_addr, 6); /* * Disable VLAN stripping */ if ((error = avf_op_disable_vlan_stripping (vm, ad))) return error; if ((error = avf_config_promisc_mode (vm, ad))) return error; /* * Init Queues */ if (args->rxq_num == 0) { args->rxq_num = 1; } else if (args->rxq_num > ad->num_queue_pairs) { args->rxq_num = ad->num_queue_pairs; vlib_log_warn (am->log_class, "Requested more rx queues than" "queue pairs available. Using %u rx queues.", args->rxq_num); } for (i = 0; i < args->rxq_num; i++) if ((error = avf_rxq_init (vm, ad, i, args->rxq_size))) return error; for (i = 0; i < tm->n_vlib_mains; i++) if ((error = avf_txq_init (vm, ad, i, args->txq_size))) return error; if ((ad->feature_bitmap & VIRTCHNL_VF_OFFLOAD_RSS_PF) && (error = avf_op_config_rss_lut (vm, ad))) return error; if ((ad->feature_bitmap & VIRTCHNL_VF_OFFLOAD_RSS_PF) && (error = avf_op_config_rss_key (vm, ad))) return error; if ((error = avf_op_config_vsi_queues (vm, ad))) return error; if ((error = avf_op_config_irq_map (vm, ad))) return error; avf_irq_0_enable (ad); for (i = 0; i < ad->n_rx_queues; i++) avf_irq_n_enable (ad, i); if ((error = avf_op_add_eth_addr (vm, ad, 1, ad->hwaddr))) return error; if ((error = avf_op_enable_queues (vm, ad, ad->n_rx_queues, 0))) return error; if ((error = avf_op_enable_queues (vm, ad, 0, ad->n_tx_queues))) return error; ad->flags |= AVF_DEVICE_F_INITIALIZED; return error; } void avf_process_one_device (vlib_main_t * vm, avf_device_t * ad, int is_irq) { avf_main_t *am = &avf_main; vnet_main_t *vnm = vnet_get_main (); virtchnl_pf_event_t *e; u32 r; if (ad->flags & AVF_DEVICE_F_ERROR) return; if ((ad->flags & AVF_DEVICE_F_INITIALIZED) == 0) return; ASSERT (ad->error == 0); /* do not process device in reset state */ r = avf_get_u32 (ad->bar0, AVFGEN_RSTAT); if (r != VIRTCHNL_VFR_VFACTIVE) return; r = avf_get_u32 (ad->bar0, AVF_ARQLEN); if ((r & 0xf0000000) != (1ULL << 31)) { ad->error = clib_error_return (0, "arq not enabled, arqlen = 0x%x", r); goto error; } r = avf_get_u32 (ad->bar0, AVF_ATQLEN); if ((r & 0xf0000000) != (1ULL << 31)) { ad->error = clib_error_return (0, "atq not enabled, atqlen = 0x%x", r); goto error; } if (is_irq == 0) avf_op_get_stats (vm, ad, &ad->eth_stats); /* *INDENT-OFF* */ vec_foreach (e, ad->events) { if (e->event == VIRTCHNL_EVENT_LINK_CHANGE) { int link_up = e->event_data.link_event.link_status; virtchnl_link_speed_t speed = e->event_data.link_event.link_speed; u32 flags = 0; u32 kbps = 0; if (link_up && (ad->flags & AVF_DEVICE_F_LINK_UP) == 0) { ad->flags |= AVF_DEVICE_F_LINK_UP; flags |= (VNET_HW_INTERFACE_FLAG_FULL_DUPLEX | VNET_HW_INTERFACE_FLAG_LINK_UP); if (speed == VIRTCHNL_LINK_SPEED_40GB) kbps = 40000000; else if (speed == VIRTCHNL_LINK_SPEED_25GB) kbps = 25000000; else if (speed == VIRTCHNL_LINK_SPEED_10GB) kbps = 10000000; else if (speed == VIRTCHNL_LINK_SPEED_1GB) kbps = 1000000; else if (speed == VIRTCHNL_LINK_SPEED_100MB) kbps = 100000; vnet_hw_interface_set_flags (vnm, ad->hw_if_index, flags); vnet_hw_interface_set_link_speed (vnm, ad->hw_if_index, kbps); ad->link_speed = speed; } else if (!link_up && (ad->flags & AVF_DEVICE_F_LINK_UP) != 0) { ad->flags &= ~AVF_DEVICE_F_LINK_UP; ad->link_speed = 0; } if (ad->flags & AVF_DEVICE_F_ELOG) { ELOG_TYPE_DECLARE (el) = { .format = "avf[%d] link change: link_status %d " "link_speed %d", .format_args = "i4i1i1", }; struct { u32 dev_instance; u8 link_status; u8 link_speed; } *ed; ed = ELOG_DATA (&vm->elog_main, el); ed->dev_instance = ad->dev_instance; ed->link_status = link_up; ed->link_speed = speed; } } else { if (ad->flags & AVF_DEVICE_F_ELOG) { ELOG_TYPE_DECLARE (el) = { .format = "avf[%d] unknown event: event %d severity %d", .format_args = "i4i4i1i1", }; struct { u32 dev_instance; u32 event; u32 severity; } *ed; ed = ELOG_DATA (&vm->elog_main, el); ed->dev_instance = ad->dev_instance; ed->event = e->event; ed->severity = e->severity; } } } /* *INDENT-ON* */ vec_reset_length (ad->events); return; error: ad->flags |= AVF_DEVICE_F_ERROR; ASSERT (ad->error != 0); vlib_log_err (am->log_class, "%U", format_clib_error, ad->error); } static u32 avf_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hw, u32 flags) { avf_main_t *am = &avf_main; vlib_log_warn (am->log_class, "TODO"); return 0; } static uword avf_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f) { avf_main_t *am = &avf_main; avf_device_t *ad; uword *event_data = 0, event_type; int enabled = 0, irq; f64 last_run_duration = 0; f64 last_periodic_time = 0; while (1) { if (enabled) vlib_process_wait_for_event_or_clock (vm, 5.0 - last_run_duration); else vlib_process_wait_for_event (vm); event_type = vlib_process_get_events (vm, &event_data); vec_reset_length (event_data); irq = 0; switch (event_type) { case ~0: last_periodic_time = vlib_time_now (vm); break; case AVF_PROCESS_EVENT_START: enabled = 1; break; case AVF_PROCESS_EVENT_STOP: enabled = 0; continue; case AVF_PROCESS_EVENT_AQ_INT: irq = 1; break; default: ASSERT (0); } /* *INDENT-OFF* */ pool_foreach (ad, am->devices, { avf_process_one_device (vm, ad, irq); }); /* *INDENT-ON* */ last_run_duration = vlib_time_now (vm) - last_periodic_time; } return 0; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (avf_process_node, static) = { .function = avf_process, .type = VLIB_NODE_TYPE_PROCESS, .name = "avf-process", }; /* *INDENT-ON* */ static void avf_irq_0_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, u16 line) { avf_main_t *am = &avf_main; uword pd = vlib_pci_get_private_data (vm, h); avf_device_t *ad = pool_elt_at_index (am->devices, pd); u32 icr0; icr0 = avf_reg_read (ad, AVFINT_ICR0); if (ad->flags & AVF_DEVICE_F_ELOG) { /* *INDENT-OFF* */ ELOG_TYPE_DECLARE (el) = { .format = "avf[%d] irq 0: icr0 0x%x", .format_args = "i4i4", }; /* *INDENT-ON* */ struct { u32 dev_instance; u32 icr0; } *ed; ed = ELOG_DATA (&vm->elog_main, el); ed->dev_instance = ad->dev_instance; ed->icr0 = icr0; } avf_irq_0_enable (ad); /* bit 30 - Send/Receive Admin queue interrupt indication */ if (icr0 & (1 << 30)) vlib_process_signal_event (vm, avf_process_node.index, AVF_PROCESS_EVENT_AQ_INT, 0); } static void avf_irq_n_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, u16 line) { vnet_main_t *vnm = vnet_get_main (); avf_main_t *am = &avf_main; uword pd = vlib_pci_get_private_data (vm, h); avf_device_t *ad = pool_elt_at_index (am->devices, pd); u16 qid; int i; if (ad->flags & AVF_DEVICE_F_ELOG) { /* *INDENT-OFF* */ ELOG_TYPE_DECLARE (el) = { .format = "avf[%d] irq %d: received", .format_args = "i4i2", }; /* *INDENT-ON* */ struct { u32 dev_instance; u16 line; } *ed; ed = ELOG_DATA (&vm->elog_main, el); ed->dev_instance = ad->dev_instance; ed->line = line; } qid = line - 1; if (vec_len (ad->rxqs) > qid && ad->rxqs[qid].int_mode != 0) vnet_device_input_set_interrupt_pending (vnm, ad->hw_if_index, qid); for (i = 0; i < vec_len (ad->rxqs); i++) avf_irq_n_enable (ad, i); } void avf_delete_if (vlib_main_t * vm, avf_device_t * ad) { vnet_main_t *vnm = vnet_get_main (); avf_main_t *am = &avf_main; int i; if (ad->hw_if_index) { vnet_hw_interface_set_flags (vnm, ad->hw_if_index, 0); vnet_hw_interface_unassign_rx_thread (vnm, ad->hw_if_index, 0); ethernet_delete_interface (vnm, ad->hw_if_index); } vlib_pci_device_close (vm, ad->pci_dev_handle); vlib_physmem_free (vm, ad->atq); vlib_physmem_free (vm, ad->arq); vlib_physmem_free (vm, ad->atq_bufs); vlib_physmem_free (vm, ad->arq_bufs); /* *INDENT-OFF* */ vec_foreach_index (i, ad->rxqs) { avf_rxq_t *rxq = vec_elt_at_index (ad->rxqs, i); vlib_physmem_free (vm, (void *) rxq->descs); if (rxq->n_enqueued) vlib_buffer_free_from_ring (vm, rxq->bufs, rxq->next, rxq->size, rxq->n_enqueued); vec_free (rxq->bufs); } /* *INDENT-ON* */ vec_free (ad->rxqs); /* *INDENT-OFF* */ vec_foreach_index (i, ad->txqs) { avf_txq_t *txq = vec_elt_at_index (ad->txqs, i); vlib_physmem_free (vm, (void *) txq->descs); if (txq->n_enqueued) { u16 first = (txq->next - txq->n_enqueued) & (txq->size -1); vlib_buffer_free_from_ring (vm, txq->bufs, first, txq->size, txq->n_enqueued); } vec_free (txq->bufs); } /* *INDENT-ON* */ vec_free (ad->txqs); clib_error_free (ad->error); clib_memset (ad, 0, sizeof (*ad)); pool_put (am->devices, ad); } void avf_create_if (vlib_main_t * vm, avf_create_if_args_t * args) { vnet_main_t *vnm = vnet_get_main (); avf_main_t *am = &avf_main; avf_device_t *ad; vlib_pci_dev_handle_t h; clib_error_t *error = 0; int i; /* check input args */ args->rxq_size = (args->rxq_size == 0) ? AVF_RXQ_SZ : args->rxq_size; args->txq_size = (args->txq_size == 0) ? AVF_TXQ_SZ : args->txq_size; if ((args->rxq_size & (args->rxq_size - 1)) || (args->txq_size & (args->txq_size - 1))) { args->rv = VNET_API_ERROR_INVALID_VALUE; args->error = clib_error_return (error, "queue size must be a power of two"); return; } pool_get (am->devices, ad); ad->dev_instance = ad - am->devices; ad->per_interface_next_index = ~0; if (args->enable_elog) ad->flags |= AVF_DEVICE_F_ELOG; if ((error = vlib_pci_device_open (vm, &args->addr, avf_pci_device_ids, &h))) { pool_put (am->devices, ad); args->rv = VNET_API_ERROR_INVALID_INTERFACE; args->error = clib_error_return (error, "pci-addr %U", format_vlib_pci_addr, &args->addr); return; } ad->pci_dev_handle = h; vlib_pci_set_private_data (vm, h, ad->dev_instance); if ((error = vlib_pci_bus_master_enable (vm, h))) goto error; if ((error = vlib_pci_map_region (vm, h, 0, &ad->bar0))) goto error; if ((error = vlib_pci_register_msix_handler (vm, h, 0, 1, &avf_irq_0_handler))) goto error; if ((error = vlib_pci_register_msix_handler (vm, h, 1, 1, &avf_irq_n_handler))) goto error; if ((error = vlib_pci_enable_msix_irq (vm, h, 0, 2))) goto error; if (!(ad->atq = vlib_physmem_alloc (vm, sizeof (avf_aq_desc_t) * AVF_MBOX_LEN))) { error = vlib_physmem_last_error (vm); goto error; } if ((error = vlib_pci_map_dma (vm, h, ad->atq))) goto error; if (!(ad->arq = vlib_physmem_alloc (vm, sizeof (avf_aq_desc_t) * AVF_MBOX_LEN))) { error = vlib_physmem_last_error (vm); goto error; } if ((error = vlib_pci_map_dma (vm, h, ad->arq))) goto error; if (!(ad->atq_bufs = vlib_physmem_alloc (vm, AVF_MBOX_BUF_SZ * AVF_MBOX_LEN))) { error = vlib_physmem_last_error (vm); goto error; } if ((error = vlib_pci_map_dma (vm, h, ad->atq_bufs))) goto error; if (!(ad->arq_bufs = vlib_physmem_alloc (vm, AVF_MBOX_BUF_SZ * AVF_MBOX_LEN))) { error = vlib_physmem_last_error (vm); goto error; } if ((error = vlib_pci_map_dma (vm, h, ad->arq_bufs))) goto error; if ((error = vlib_pci_intr_enable (vm, h))) goto error; if (vlib_pci_supports_virtual_addr_dma (vm, h)) ad->flags |= AVF_DEVICE_F_VA_DMA; if ((error = avf_device_init (vm, am, ad, args))) goto error; /* create interface */ error = ethernet_register_interface (vnm, avf_device_class.index, ad->dev_instance, ad->hwaddr, &ad->hw_if_index, avf_flag_change); if (error) goto error; vnet_sw_interface_t *sw = vnet_get_hw_sw_interface (vnm, ad->hw_if_index); args->sw_if_index = ad->sw_if_index = sw->sw_if_index; vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, ad->hw_if_index); hw->flags |= VNET_HW_INTERFACE_FLAG_SUPPORTS_INT_MODE; vnet_hw_interface_set_input_node (vnm, ad->hw_if_index, avf_input_node.index); for (i = 0; i < ad->n_rx_queues; i++) vnet_hw_interface_assign_rx_thread (vnm, ad->hw_if_index, i, ~0); if (pool_elts (am->devices) == 1) vlib_process_signal_event (vm, avf_process_node.index, AVF_PROCESS_EVENT_START, 0); return; error: avf_delete_if (vm, ad); args->rv = VNET_API_ERROR_INVALID_INTERFACE; args->error = clib_error_return (error, "pci-addr %U", format_vlib_pci_addr, &args->addr); vlib_log_err (am->log_class, "%U", format_clib_error, args->error); } static clib_error_t * avf_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags) { vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index); avf_main_t *am = &avf_main; avf_device_t *ad = vec_elt_at_index (am->devices, hi->dev_instance); uword is_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0; if (ad->flags & AVF_DEVICE_F_ERROR) return clib_error_return (0, "device is in error state"); if (is_up) { vnet_hw_interface_set_flags (vnm, ad->hw_if_index, VNET_HW_INTERFACE_FLAG_LINK_UP); ad->flags |= AVF_DEVICE_F_ADMIN_UP; } else { vnet_hw_interface_set_flags (vnm, ad->hw_if_index, 0); ad->flags &= ~AVF_DEVICE_F_ADMIN_UP; } return 0; } static clib_error_t * avf_interface_rx_mode_change (vnet_main_t * vnm, u32 hw_if_index, u32 qid, vnet_hw_interface_rx_mode mode) { avf_main_t *am = &avf_main; vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index); avf_device_t *ad = pool_elt_at_index (am->devices, hw->dev_instance); avf_rxq_t *rxq = vec_elt_at_index (ad->rxqs, qid); if (mode == VNET_HW_INTERFACE_RX_MODE_POLLING) rxq->int_mode = 0; else rxq->int_mode = 1; return 0; } static void avf_set_interface_next_node (vnet_main_t * vnm, u32 hw_if_index, u32 node_index) { avf_main_t *am = &avf_main; vnet_hw_interface_t *hw = vnet_get_hw_interface (vnm, hw_if_index); avf_device_t *ad = pool_elt_at_index (am->devices, hw->dev_instance); /* Shut off redirection */ if (node_index == ~0) { ad->per_interface_next_index = node_index; return; } ad->per_interface_next_index = vlib_node_add_next (vlib_get_main (), avf_input_node.index, node_index); } static char *avf_tx_func_error_strings[] = { #define _(n,s) s, foreach_avf_tx_func_error #undef _ }; /* *INDENT-OFF* */ VNET_DEVICE_CLASS (avf_device_class,) = { .name = "Adaptive Virtual Function (AVF) interface", .format_device = format_avf_device, .format_device_name = format_avf_device_name, .admin_up_down_function = avf_interface_admin_up_down, .rx_mode_change_function = avf_interface_rx_mode_change, .rx_redirect_to_node = avf_set_interface_next_node, .tx_function_n_errors = AVF_TX_N_ERROR, .tx_function_error_strings = avf_tx_func_error_strings, }; /* *INDENT-ON* */ clib_error_t * avf_init (vlib_main_t * vm) { avf_main_t *am = &avf_main; clib_error_t *error; vlib_thread_main_t *tm = vlib_get_thread_main (); int i; if ((error = vlib_call_init_function (vm, pci_bus_init))) return error; vec_validate_aligned (am->per_thread_data, tm->n_vlib_mains - 1, CLIB_CACHE_LINE_BYTES); /* initialize ptype based loopup table */ vec_validate_aligned (am->ptypes, 255, CLIB_CACHE_LINE_BYTES); /* *INDENT-OFF* */ vec_foreach_index (i, am->ptypes) { avf_ptype_t *p = vec_elt_at_index (am->ptypes, i); if ((i >= 22) && (i <= 87)) { p->next_node = VNET_DEVICE_INPUT_NEXT_IP4_NCS_INPUT; p->flags = VNET_BUFFER_F_IS_IP4; } else if ((i >= 88) && (i <= 153)) { p->next_node = VNET_DEVICE_INPUT_NEXT_IP6_INPUT; p->flags = VNET_BUFFER_F_IS_IP6; } else p->next_node = VNET_DEVICE_INPUT_NEXT_ETHERNET_INPUT; p->buffer_advance = device_input_next_node_advance[p->next_node]; p->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID; } /* *INDENT-ON* */ am->log_class = vlib_log_register_class ("avf_plugin", 0); vlib_log_debug (am->log_class, "initialized"); return 0; } VLIB_INIT_FUNCTION (avf_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */