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authorDamjan Marion <damarion@cisco.com>2018-02-07 22:35:06 +0100
committerDamjan Marion <damarion@cisco.com>2018-03-26 12:39:36 +0200
commitb4ff07a2f843207b6d024e1ed8a31fa37324fe07 (patch)
tree133833e1c9f09ea7962d795adae5b3143d9fdcfa /src/plugins/avf/device.c
parentf6647e0f3653929a0528f5eb97337016bdda01be (diff)
Intel Adaptive Virtual Function native device driver plugin
Change-Id: If168a9c54baaa516ecbe78de2141f11c17aa2f53 Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/plugins/avf/device.c')
-rw-r--r--src/plugins/avf/device.c1243
1 files changed, 1243 insertions, 0 deletions
diff --git a/src/plugins/avf/device.c b/src/plugins/avf/device.c
new file mode 100644
index 00000000000..4a0fed19d44
--- /dev/null
+++ b/src/plugins/avf/device.c
@@ -0,0 +1,1243 @@
+/*
+ *------------------------------------------------------------------
+ * 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 <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vlib/pci/pci.h>
+#include <vnet/ethernet/ethernet.h>
+
+#include <avf/avf.h>
+
+#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},
+ {0},
+};
+
+//#define avf_log_debug(fmt, ...) fformat(stderr, "%s: " fmt "\n", __func__, __VA_ARGS__)
+#define avf_log_debug(fmt, ...)
+
+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)
+{
+ 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 ();
+ avf_log_debug ("%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)
+{
+ avf_main_t *am = &avf_main;
+ avf_rxq_t *rxq;
+ clib_error_t *error = 0;
+ u32 n_alloc, i;
+
+ vec_validate_aligned (ad->rxqs, qid, CLIB_CACHE_LINE_BYTES);
+ rxq = vec_elt_at_index (ad->rxqs, qid);
+ rxq->size = AVF_RXQ_SZ;
+ rxq->next = 0;
+ rxq->descs = vlib_physmem_alloc_aligned (vm, am->physmem_region, &error,
+ rxq->size * sizeof (avf_rx_desc_t),
+ 2 * CLIB_CACHE_LINE_BYTES);
+ memset (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_bufs = n_alloc;
+ avf_rx_desc_t *d = rxq->descs;
+ for (i = 0; i < n_alloc; i++)
+ {
+ if (ad->flags & AVF_DEVICE_F_IOVA)
+ {
+ vlib_buffer_t *b = vlib_get_buffer (vm, rxq->bufs[i]);
+ d->qword[0] = pointer_to_uword (b->data);
+ }
+ else
+ d->qword[0] =
+ vlib_get_buffer_data_physical_address (vm, rxq->bufs[i]);
+ d++;
+ }
+ return 0;
+}
+
+clib_error_t *
+avf_txq_init (vlib_main_t * vm, avf_device_t * ad, u16 qid)
+{
+ avf_main_t *am = &avf_main;
+ avf_txq_t *txq;
+ clib_error_t *error = 0;
+
+ 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 = AVF_TXQ_SZ;
+ txq->next = 0;
+ txq->descs = vlib_physmem_alloc_aligned (vm, am->physmem_region, &error,
+ txq->size * sizeof (avf_tx_desc_t),
+ 2 * CLIB_CACHE_LINE_BYTES);
+ vec_validate_aligned (txq->bufs, txq->size, CLIB_CACHE_LINE_BYTES);
+ txq->qtx_tail = ad->bar0 + AVF_QTX_TAIL (qid);
+ 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];
+ 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)
+{
+ avf_main_t *am = &avf_main;
+ return (ad->flags & AVF_DEVICE_F_IOVA) ?
+ pointer_to_uword (p) :
+ vlib_physmem_virtual_to_physical (vm, am->physmem_region, p);
+}
+
+static void
+avf_adminq_init (vlib_main_t * vm, avf_device_t * ad)
+{
+ u64 pa;
+ int i;
+
+ /* VF MailBox Transmit */
+ 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 | (1 << 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 */
+ 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 | (1 << 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]", d->v_opcode, op);
+ 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)
+{
+ clib_error_t *err = 0;
+ u32 bitmap = (VIRTCHNL_VF_OFFLOAD_L2 | VIRTCHNL_VF_OFFLOAD_RSS_AQ |
+ VIRTCHNL_VF_OFFLOAD_RSS_REG | VIRTCHNL_VF_OFFLOAD_WB_ON_ITR |
+ VIRTCHNL_VF_OFFLOAD_VLAN | VIRTCHNL_VF_OFFLOAD_RX_POLLING);
+
+ err = avf_send_to_pf (vm, ad, VIRTCHNL_OP_GET_VF_RESOURCES, &bitmap,
+ sizeof (u32), res, sizeof (virtchnl_vf_resource_t));
+
+ if (err)
+ return err;
+
+ return err;
+}
+
+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;
+
+ 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, 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, 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;
+
+ 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;
+
+ 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 };
+ qs.vsi_id = ad->vsi_id;
+ qs.rx_queues = rx;
+ qs.tx_queues = tx;
+ avf_rxq_t *rxq = vec_elt_at_index (ad->rxqs, 0);
+ avf_reg_write (ad, AVF_QRX_TAIL (0), rxq->n_bufs);
+ 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_device_init (vlib_main_t * vm, avf_device_t * ad)
+{
+ 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);
+
+ 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;
+
+ if ((error = avf_cmd_rx_ctl_reg_write (vm, ad, 0xc400, 0)))
+ return error;
+
+ if ((error = avf_cmd_rx_ctl_reg_write (vm, ad, 0xc404, 0)))
+ return error;
+
+ /*
+ * Init Queues
+ */
+ if ((error = avf_rxq_init (vm, ad, 0)))
+ return error;
+
+ for (i = 0; i < tm->n_vlib_mains; i++)
+ if ((error = avf_txq_init (vm, ad, i)))
+ 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);
+ avf_irq_n_enable (ad, 0);
+
+ if ((error = avf_op_add_eth_addr (vm, ad, 1, ad->hwaddr)))
+ return error;
+
+ if ((error = avf_op_enable_queues (vm, ad, 1, 0)))
+ return error;
+
+ if ((error = avf_op_enable_queues (vm, ad, 0, 1)))
+ 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)
+{
+ 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);
+
+ r = avf_get_u32 (ad->bar0, AVF_ARQLEN);
+ if ((r & 0xf0000000) != (1 << 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) != (1 << 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;
+
+ 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)
+ flags |= VNET_HW_INTERFACE_FLAG_SPEED_40G;
+ else if (speed == VIRTCHNL_LINK_SPEED_25GB)
+ flags |= VNET_HW_INTERFACE_FLAG_SPEED_25G;
+ else if (speed == VIRTCHNL_LINK_SPEED_10GB)
+ flags |= VNET_HW_INTERFACE_FLAG_SPEED_10G;
+ else if (speed == VIRTCHNL_LINK_SPEED_1GB)
+ flags |= VNET_HW_INTERFACE_FLAG_SPEED_1G;
+ else if (speed == VIRTCHNL_LINK_SPEED_100MB)
+ flags |= VNET_HW_INTERFACE_FLAG_SPEED_100M;
+ vnet_hw_interface_set_flags (vnm, ad->hw_if_index, flags);
+ 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);
+}
+
+static u32
+avf_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hw, u32 flags)
+{
+ clib_warning ("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_pci_dev_handle_t h, u16 line)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ avf_main_t *am = &avf_main;
+ uword pd = vlib_pci_get_private_data (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_pci_dev_handle_t h, u16 line)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ avf_main_t *am = &avf_main;
+ uword pd = vlib_pci_get_private_data (h);
+ avf_device_t *ad = pool_elt_at_index (am->devices, pd);
+
+ 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;
+ }
+
+ avf_irq_n_enable (ad, 0);
+}
+
+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 (ad->pci_dev_handle);
+
+ vlib_physmem_free (vm, am->physmem_region, ad->atq);
+ vlib_physmem_free (vm, am->physmem_region, ad->arq);
+ vlib_physmem_free (vm, am->physmem_region, ad->atq_bufs);
+ vlib_physmem_free (vm, am->physmem_region, 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, am->physmem_region, rxq->descs);
+ if (rxq->n_bufs)
+ vlib_buffer_free_from_ring (vm, rxq->bufs, rxq->next, rxq->size,
+ rxq->n_bufs);
+ 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, am->physmem_region, txq->descs);
+ if (txq->n_bufs)
+ {
+ u16 first = (txq->next - txq->n_bufs) & (txq->size -1);
+ vlib_buffer_free_from_ring (vm, txq->bufs, first, txq->size,
+ txq->n_bufs);
+ }
+ vec_free (txq->bufs);
+ }
+ /* *INDENT-ON* */
+ vec_free (ad->txqs);
+
+ clib_error_free (ad->error);
+ 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;
+
+ 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 (&args->addr, avf_pci_device_ids, &h)))
+ goto error;
+ ad->pci_dev_handle = h;
+
+ vlib_pci_set_private_data (h, ad->dev_instance);
+
+ if ((error = vlib_pci_bus_master_enable (h)))
+ goto error;
+
+ if ((error = vlib_pci_map_region (h, 0, &ad->bar0)))
+ goto error;
+
+ if ((error = vlib_pci_register_msix_handler (h, 0, 1, &avf_irq_0_handler)))
+ goto error;
+
+ if ((error = vlib_pci_register_msix_handler (h, 1, 1, &avf_irq_n_handler)))
+ goto error;
+
+ if ((error = vlib_pci_enable_msix_irq (h, 0, 2)))
+ goto error;
+
+ if (am->physmem_region_alloc == 0)
+ {
+ u32 flags = VLIB_PHYSMEM_F_INIT_MHEAP | VLIB_PHYSMEM_F_HUGETLB;
+ error = vlib_physmem_region_alloc (vm, "avf descriptors", 4 << 20, 0,
+ flags, &am->physmem_region);
+ if (error)
+ goto error;
+ am->physmem_region_alloc = 1;
+ }
+ ad->atq = vlib_physmem_alloc_aligned (vm, am->physmem_region, &error,
+ sizeof (avf_aq_desc_t) * AVF_MBOX_LEN,
+ 64);
+ if (error)
+ goto error;
+
+ ad->arq = vlib_physmem_alloc_aligned (vm, am->physmem_region, &error,
+ sizeof (avf_aq_desc_t) * AVF_MBOX_LEN,
+ 64);
+ if (error)
+ goto error;
+
+ ad->atq_bufs = vlib_physmem_alloc_aligned (vm, am->physmem_region, &error,
+ AVF_MBOX_BUF_SZ * AVF_MBOX_LEN,
+ 64);
+ if (error)
+ goto error;
+
+ ad->arq_bufs = vlib_physmem_alloc_aligned (vm, am->physmem_region, &error,
+ AVF_MBOX_BUF_SZ * AVF_MBOX_LEN,
+ 64);
+ if (error)
+ goto error;
+
+ if ((error = vlib_pci_intr_enable (h)))
+ goto error;
+
+ /* FIXME detect */
+ ad->flags |= AVF_DEVICE_F_IOVA;
+
+ if ((error = avf_device_init (vm, ad)))
+ 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);
+ ad->sw_if_index = sw->sw_if_index;
+
+ vnet_hw_interface_set_input_node (vnm, ad->hw_if_index,
+ avf_input_node.index);
+
+ 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);
+}
+
+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;
+ vnet_hw_interface_assign_rx_thread (vnm, ad->hw_if_index, 0, ~0);
+ }
+ else
+ {
+ vnet_hw_interface_set_flags (vnm, ad->hw_if_index, 0);
+ ad->flags &= ~AVF_DEVICE_F_ADMIN_UP;
+ }
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VNET_DEVICE_CLASS (avf_device_class,) =
+{
+ .name = "Adaptive Virtual Function (AVF) interface",
+ .tx_function = avf_interface_tx,
+ .format_device = format_avf_device,
+ .format_device_name = format_avf_device_name,
+ .admin_up_down_function = avf_interface_admin_up_down,
+};
+/* *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* */
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (avf_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */