diff --git a/doc/guides/eventdevs/dlb2.rst b/doc/guides/eventdevs/dlb2.rst index b154cac651..bbd6ac835e 100644 --- a/doc/guides/eventdevs/dlb2.rst +++ b/doc/guides/eventdevs/dlb2.rst @@ -82,6 +82,81 @@ The queue's ``nb_atomic_flows`` parameter is ignored by the DLB2 PMD, because the DLB2 does not limit the number of flows a queue can track. In the DLB2, all load-balanced queues can use the full 16-bit flow ID range. +Load-Balanced Queues +~~~~~~~~~~~~~~~~~~~~ + +A load-balanced queue can support atomic and ordered scheduling, or atomic and +unordered scheduling, but not atomic and unordered and ordered scheduling. A +queue's scheduling types are controlled by the event queue configuration. + +If the user sets the ``RTE_EVENT_QUEUE_CFG_ALL_TYPES`` flag, the +``nb_atomic_order_sequences`` determines the supported scheduling types. +With non-zero ``nb_atomic_order_sequences``, the queue is configured for atomic +and ordered scheduling. In this case, ``RTE_SCHED_TYPE_PARALLEL`` scheduling is +supported by scheduling those events as ordered events. Note that when the +event is dequeued, its sched_type will be ``RTE_SCHED_TYPE_ORDERED``. Else if +``nb_atomic_order_sequences`` is zero, the queue is configured for atomic and +unordered scheduling. In this case, ``RTE_SCHED_TYPE_ORDERED`` is unsupported. + +If the ``RTE_EVENT_QUEUE_CFG_ALL_TYPES`` flag is not set, schedule_type +dictates the queue's scheduling type. + +The ``nb_atomic_order_sequences`` queue configuration field sets the ordered +queue's reorder buffer size. DLB2 has 4 groups of ordered queues, where each +group is configured to contain either 1 queue with 1024 reorder entries, 2 +queues with 512 reorder entries, and so on down to 32 queues with 32 entries. + +When a load-balanced queue is created, the PMD will configure a new sequence +number group on-demand if num_sequence_numbers does not match a pre-existing +group with available reorder buffer entries. If all sequence number groups are +in use, no new group will be created and queue configuration will fail. (Note +that when the PMD is used with a virtual DLB2 device, it cannot change the +sequence number configuration.) + +The queue's ``nb_atomic_flows`` parameter is ignored by the DLB2 PMD, because +the DLB2 does not limit the number of flows a queue can track. In the DLB2, all +load-balanced queues can use the full 16-bit flow ID range. + +Load-balanced and Directed Ports +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +DLB2 ports come in two flavors: load-balanced and directed. The eventdev API +does not have the same concept, but it has a similar one: ports and queues that +are singly-linked (i.e. linked to a single queue or port, respectively). + +The ``rte_event_dev_info_get()`` function reports the number of available +event ports and queues (among other things). For the DLB2 PMD, max_event_ports +and max_event_queues report the number of available load-balanced ports and +queues, and max_single_link_event_port_queue_pairs reports the number of +available directed ports and queues. + +When a scheduling domain is created in ``rte_event_dev_configure()``, the user +specifies ``nb_event_ports`` and ``nb_single_link_event_port_queues``, which +control the total number of ports (load-balanced and directed) and the number +of directed ports. Hence, the number of requested load-balanced ports is +``nb_event_ports - nb_single_link_event_ports``. The ``nb_event_queues`` field +specifies the total number of queues (load-balanced and directed). The number +of directed queues comes from ``nb_single_link_event_port_queues``, since +directed ports and queues come in pairs. + +When a port is setup, the ``RTE_EVENT_PORT_CFG_SINGLE_LINK`` flag determines +whether it should be configured as a directed (the flag is set) or a +load-balanced (the flag is unset) port. Similarly, the +``RTE_EVENT_QUEUE_CFG_SINGLE_LINK`` queue configuration flag controls +whether it is a directed or load-balanced queue. + +Load-balanced ports can only be linked to load-balanced queues, and directed +ports can only be linked to directed queues. Furthermore, directed ports can +only be linked to a single directed queue (and vice versa), and that link +cannot change after the eventdev is started. + +The eventdev API does not have a directed scheduling type. To support directed +traffic, the dlb PMD detects when an event is being sent to a directed queue +and overrides its scheduling type. Note that the originally selected scheduling +type (atomic, ordered, or parallel) is not preserved, and an event's sched_type +will be set to ``RTE_SCHED_TYPE_ATOMIC`` when it is dequeued from a directed +port. + Flow ID ~~~~~~~ diff --git a/drivers/event/dlb2/dlb2.c b/drivers/event/dlb2/dlb2.c index 48e7245769..f0b13a43a7 100644 --- a/drivers/event/dlb2/dlb2.c +++ b/drivers/event/dlb2/dlb2.c @@ -999,6 +999,503 @@ dlb2_eventdev_queue_setup(struct rte_eventdev *dev, return ret; } +static int +dlb2_init_consume_qe(struct dlb2_port *qm_port, char *mz_name) +{ + struct dlb2_cq_pop_qe *qe; + + qe = rte_zmalloc(mz_name, + DLB2_NUM_QES_PER_CACHE_LINE * + sizeof(struct dlb2_cq_pop_qe), + RTE_CACHE_LINE_SIZE); + + if (qe == NULL) { + DLB2_LOG_ERR("dlb2: no memory for consume_qe\n"); + return -ENOMEM; + } + qm_port->consume_qe = qe; + + qe->qe_valid = 0; + qe->qe_frag = 0; + qe->qe_comp = 0; + qe->cq_token = 1; + /* Tokens value is 0-based; i.e. '0' returns 1 token, '1' returns 2, + * and so on. + */ + qe->tokens = 0; /* set at run time */ + qe->meas_lat = 0; + qe->no_dec = 0; + /* Completion IDs are disabled */ + qe->cmp_id = 0; + + return 0; +} + +static int +dlb2_init_int_arm_qe(struct dlb2_port *qm_port, char *mz_name) +{ + struct dlb2_enqueue_qe *qe; + + qe = rte_zmalloc(mz_name, + DLB2_NUM_QES_PER_CACHE_LINE * + sizeof(struct dlb2_enqueue_qe), + RTE_CACHE_LINE_SIZE); + + if (qe == NULL) { + DLB2_LOG_ERR("dlb2: no memory for complete_qe\n"); + return -ENOMEM; + } + qm_port->int_arm_qe = qe; + + /* V2 - INT ARM is CQ_TOKEN + FRAG */ + qe->qe_valid = 0; + qe->qe_frag = 1; + qe->qe_comp = 0; + qe->cq_token = 1; + qe->meas_lat = 0; + qe->no_dec = 0; + /* Completion IDs are disabled */ + qe->cmp_id = 0; + + return 0; +} + +static int +dlb2_init_qe_mem(struct dlb2_port *qm_port, char *mz_name) +{ + int ret, sz; + + sz = DLB2_NUM_QES_PER_CACHE_LINE * sizeof(struct dlb2_enqueue_qe); + + qm_port->qe4 = rte_zmalloc(mz_name, sz, RTE_CACHE_LINE_SIZE); + + if (qm_port->qe4 == NULL) { + DLB2_LOG_ERR("dlb2: no qe4 memory\n"); + ret = -ENOMEM; + goto error_exit; + } + + ret = dlb2_init_int_arm_qe(qm_port, mz_name); + if (ret < 0) { + DLB2_LOG_ERR("dlb2: dlb2_init_int_arm_qe ret=%d\n", ret); + goto error_exit; + } + + ret = dlb2_init_consume_qe(qm_port, mz_name); + if (ret < 0) { + DLB2_LOG_ERR("dlb2: dlb2_init_consume_qe ret=%d\n", ret); + goto error_exit; + } + + return 0; + +error_exit: + + dlb2_free_qe_mem(qm_port); + + return ret; +} + +static int +dlb2_hw_create_ldb_port(struct dlb2_eventdev *dlb2, + struct dlb2_eventdev_port *ev_port, + uint32_t dequeue_depth, + uint32_t enqueue_depth) +{ + struct dlb2_hw_dev *handle = &dlb2->qm_instance; + struct dlb2_create_ldb_port_args cfg = { {0} }; + int ret; + struct dlb2_port *qm_port = NULL; + char mz_name[RTE_MEMZONE_NAMESIZE]; + uint32_t qm_port_id; + uint16_t ldb_credit_high_watermark; + uint16_t dir_credit_high_watermark; + + if (handle == NULL) + return -EINVAL; + + if (dequeue_depth < DLB2_MIN_CQ_DEPTH) { + DLB2_LOG_ERR("dlb2: invalid enqueue_depth, must be at least %d\n", + DLB2_MIN_CQ_DEPTH); + return -EINVAL; + } + + if (enqueue_depth < DLB2_MIN_ENQUEUE_DEPTH) { + DLB2_LOG_ERR("dlb2: invalid enqueue_depth, must be at least %d\n", + DLB2_MIN_ENQUEUE_DEPTH); + return -EINVAL; + } + + rte_spinlock_lock(&handle->resource_lock); + + /* We round up to the next power of 2 if necessary */ + cfg.cq_depth = rte_align32pow2(dequeue_depth); + cfg.cq_depth_threshold = 1; + + cfg.cq_history_list_size = DLB2_NUM_HIST_LIST_ENTRIES_PER_LDB_PORT; + + if (handle->cos_id == DLB2_COS_DEFAULT) + cfg.cos_id = 0; + else + cfg.cos_id = handle->cos_id; + + cfg.cos_strict = 0; + + /* User controls the LDB high watermark via enqueue depth. The DIR high + * watermark is equal, unless the directed credit pool is too small. + */ + ldb_credit_high_watermark = enqueue_depth; + + /* If there are no directed ports, the kernel driver will ignore this + * port's directed credit settings. Don't use enqueue_depth if it would + * require more directed credits than are available. + */ + dir_credit_high_watermark = + RTE_MIN(enqueue_depth, + handle->cfg.num_dir_credits / dlb2->num_ports); + + /* Per QM values */ + + ret = dlb2_iface_ldb_port_create(handle, &cfg, dlb2->poll_mode); + if (ret < 0) { + DLB2_LOG_ERR("dlb2: dlb2_ldb_port_create error, ret=%d (driver status: %s)\n", + ret, dlb2_error_strings[cfg.response.status]); + goto error_exit; + } + + qm_port_id = cfg.response.id; + + DLB2_LOG_DBG("dlb2: ev_port %d uses qm LB port %d <<<<<\n", + ev_port->id, qm_port_id); + + qm_port = &ev_port->qm_port; + qm_port->ev_port = ev_port; /* back ptr */ + qm_port->dlb2 = dlb2; /* back ptr */ + /* + * Allocate and init local qe struct(s). + * Note: MOVDIR64 requires the enqueue QE (qe4) to be aligned. + */ + + snprintf(mz_name, sizeof(mz_name), "dlb2_ldb_port%d", + ev_port->id); + + ret = dlb2_init_qe_mem(qm_port, mz_name); + if (ret < 0) { + DLB2_LOG_ERR("dlb2: init_qe_mem failed, ret=%d\n", ret); + goto error_exit; + } + + qm_port->id = qm_port_id; + + qm_port->cached_ldb_credits = 0; + qm_port->cached_dir_credits = 0; + /* CQs with depth < 8 use an 8-entry queue, but withhold credits so + * the effective depth is smaller. + */ + qm_port->cq_depth = cfg.cq_depth <= 8 ? 8 : cfg.cq_depth; + qm_port->cq_idx = 0; + qm_port->cq_idx_unmasked = 0; + + if (dlb2->poll_mode == DLB2_CQ_POLL_MODE_SPARSE) + qm_port->cq_depth_mask = (qm_port->cq_depth * 4) - 1; + else + qm_port->cq_depth_mask = qm_port->cq_depth - 1; + + qm_port->gen_bit_shift = __builtin_popcount(qm_port->cq_depth_mask); + /* starting value of gen bit - it toggles at wrap time */ + qm_port->gen_bit = 1; + + qm_port->int_armed = false; + + /* Save off for later use in info and lookup APIs. */ + qm_port->qid_mappings = &dlb2->qm_ldb_to_ev_queue_id[0]; + + qm_port->dequeue_depth = dequeue_depth; + + qm_port->owed_tokens = 0; + qm_port->issued_releases = 0; + + /* Save config message too. */ + rte_memcpy(&qm_port->cfg.ldb, &cfg, sizeof(qm_port->cfg.ldb)); + + /* update state */ + qm_port->state = PORT_STARTED; /* enabled at create time */ + qm_port->config_state = DLB2_CONFIGURED; + + qm_port->dir_credits = dir_credit_high_watermark; + qm_port->ldb_credits = ldb_credit_high_watermark; + qm_port->credit_pool[DLB2_DIR_QUEUE] = &dlb2->dir_credit_pool; + qm_port->credit_pool[DLB2_LDB_QUEUE] = &dlb2->ldb_credit_pool; + + DLB2_LOG_DBG("dlb2: created ldb port %d, depth = %d, ldb credits=%d, dir credits=%d\n", + qm_port_id, + dequeue_depth, + qm_port->ldb_credits, + qm_port->dir_credits); + + rte_spinlock_unlock(&handle->resource_lock); + + return 0; + +error_exit: + + if (qm_port) + dlb2_free_qe_mem(qm_port); + + rte_spinlock_unlock(&handle->resource_lock); + + DLB2_LOG_ERR("dlb2: create ldb port failed!\n"); + + return ret; +} + +static void +dlb2_port_link_teardown(struct dlb2_eventdev *dlb2, + struct dlb2_eventdev_port *ev_port) +{ + struct dlb2_eventdev_queue *ev_queue; + int i; + + for (i = 0; i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ; i++) { + if (!ev_port->link[i].valid) + continue; + + ev_queue = &dlb2->ev_queues[ev_port->link[i].queue_id]; + + ev_port->link[i].valid = false; + ev_port->num_links--; + ev_queue->num_links--; + } +} + +static int +dlb2_hw_create_dir_port(struct dlb2_eventdev *dlb2, + struct dlb2_eventdev_port *ev_port, + uint32_t dequeue_depth, + uint32_t enqueue_depth) +{ + struct dlb2_hw_dev *handle = &dlb2->qm_instance; + struct dlb2_create_dir_port_args cfg = { {0} }; + int ret; + struct dlb2_port *qm_port = NULL; + char mz_name[RTE_MEMZONE_NAMESIZE]; + uint32_t qm_port_id; + uint16_t ldb_credit_high_watermark; + uint16_t dir_credit_high_watermark; + + if (dlb2 == NULL || handle == NULL) + return -EINVAL; + + if (dequeue_depth < DLB2_MIN_CQ_DEPTH) { + DLB2_LOG_ERR("dlb2: invalid dequeue_depth, must be %d-%d\n", + DLB2_MIN_CQ_DEPTH, DLB2_MAX_INPUT_QUEUE_DEPTH); + return -EINVAL; + } + + if (enqueue_depth < DLB2_MIN_ENQUEUE_DEPTH) { + DLB2_LOG_ERR("dlb2: invalid enqueue_depth, must be at least %d\n", + DLB2_MIN_ENQUEUE_DEPTH); + return -EINVAL; + } + + rte_spinlock_lock(&handle->resource_lock); + + /* Directed queues are configured at link time. */ + cfg.queue_id = -1; + + /* We round up to the next power of 2 if necessary */ + cfg.cq_depth = rte_align32pow2(dequeue_depth); + cfg.cq_depth_threshold = 1; + + /* User controls the LDB high watermark via enqueue depth. The DIR high + * watermark is equal, unless the directed credit pool is too small. + */ + ldb_credit_high_watermark = enqueue_depth; + + /* Don't use enqueue_depth if it would require more directed credits + * than are available. + */ + dir_credit_high_watermark = + RTE_MIN(enqueue_depth, + handle->cfg.num_dir_credits / dlb2->num_ports); + + /* Per QM values */ + + ret = dlb2_iface_dir_port_create(handle, &cfg, dlb2->poll_mode); + if (ret < 0) { + DLB2_LOG_ERR("dlb2: dlb2_dir_port_create error, ret=%d (driver status: %s)\n", + ret, dlb2_error_strings[cfg.response.status]); + goto error_exit; + } + + qm_port_id = cfg.response.id; + + DLB2_LOG_DBG("dlb2: ev_port %d uses qm DIR port %d <<<<<\n", + ev_port->id, qm_port_id); + + qm_port = &ev_port->qm_port; + qm_port->ev_port = ev_port; /* back ptr */ + qm_port->dlb2 = dlb2; /* back ptr */ + + /* + * Init local qe struct(s). + * Note: MOVDIR64 requires the enqueue QE to be aligned + */ + + snprintf(mz_name, sizeof(mz_name), "dlb2_dir_port%d", + ev_port->id); + + ret = dlb2_init_qe_mem(qm_port, mz_name); + + if (ret < 0) { + DLB2_LOG_ERR("dlb2: init_qe_mem failed, ret=%d\n", ret); + goto error_exit; + } + + qm_port->id = qm_port_id; + + qm_port->cached_ldb_credits = 0; + qm_port->cached_dir_credits = 0; + /* CQs with depth < 8 use an 8-entry queue, but withhold credits so + * the effective depth is smaller. + */ + qm_port->cq_depth = cfg.cq_depth <= 8 ? 8 : cfg.cq_depth; + qm_port->cq_idx = 0; + qm_port->cq_idx_unmasked = 0; + + if (dlb2->poll_mode == DLB2_CQ_POLL_MODE_SPARSE) + qm_port->cq_depth_mask = (cfg.cq_depth * 4) - 1; + else + qm_port->cq_depth_mask = cfg.cq_depth - 1; + + qm_port->gen_bit_shift = __builtin_popcount(qm_port->cq_depth_mask); + /* starting value of gen bit - it toggles at wrap time */ + qm_port->gen_bit = 1; + + qm_port->int_armed = false; + + /* Save off for later use in info and lookup APIs. */ + qm_port->qid_mappings = &dlb2->qm_dir_to_ev_queue_id[0]; + + qm_port->dequeue_depth = dequeue_depth; + + qm_port->owed_tokens = 0; + qm_port->issued_releases = 0; + + /* Save config message too. */ + rte_memcpy(&qm_port->cfg.dir, &cfg, sizeof(qm_port->cfg.dir)); + + /* update state */ + qm_port->state = PORT_STARTED; /* enabled at create time */ + qm_port->config_state = DLB2_CONFIGURED; + + qm_port->dir_credits = dir_credit_high_watermark; + qm_port->ldb_credits = ldb_credit_high_watermark; + qm_port->credit_pool[DLB2_DIR_QUEUE] = &dlb2->dir_credit_pool; + qm_port->credit_pool[DLB2_LDB_QUEUE] = &dlb2->ldb_credit_pool; + + DLB2_LOG_DBG("dlb2: created dir port %d, depth = %d cr=%d,%d\n", + qm_port_id, + dequeue_depth, + dir_credit_high_watermark, + ldb_credit_high_watermark); + + rte_spinlock_unlock(&handle->resource_lock); + + return 0; + +error_exit: + + if (qm_port) + dlb2_free_qe_mem(qm_port); + + rte_spinlock_unlock(&handle->resource_lock); + + DLB2_LOG_ERR("dlb2: create dir port failed!\n"); + + return ret; +} + +static int +dlb2_eventdev_port_setup(struct rte_eventdev *dev, + uint8_t ev_port_id, + const struct rte_event_port_conf *port_conf) +{ + struct dlb2_eventdev *dlb2; + struct dlb2_eventdev_port *ev_port; + int ret; + + if (dev == NULL || port_conf == NULL) { + DLB2_LOG_ERR("Null parameter\n"); + return -EINVAL; + } + + dlb2 = dlb2_pmd_priv(dev); + + if (ev_port_id >= DLB2_MAX_NUM_PORTS) + return -EINVAL; + + if (port_conf->dequeue_depth > + evdev_dlb2_default_info.max_event_port_dequeue_depth || + port_conf->enqueue_depth > + evdev_dlb2_default_info.max_event_port_enqueue_depth) + return -EINVAL; + + ev_port = &dlb2->ev_ports[ev_port_id]; + /* configured? */ + if (ev_port->setup_done) { + DLB2_LOG_ERR("evport %d is already configured\n", ev_port_id); + return -EINVAL; + } + + ev_port->qm_port.is_directed = port_conf->event_port_cfg & + RTE_EVENT_PORT_CFG_SINGLE_LINK; + + if (!ev_port->qm_port.is_directed) { + ret = dlb2_hw_create_ldb_port(dlb2, + ev_port, + port_conf->dequeue_depth, + port_conf->enqueue_depth); + if (ret < 0) { + DLB2_LOG_ERR("Failed to create the lB port ve portId=%d\n", + ev_port_id); + + return ret; + } + } else { + ret = dlb2_hw_create_dir_port(dlb2, + ev_port, + port_conf->dequeue_depth, + port_conf->enqueue_depth); + if (ret < 0) { + DLB2_LOG_ERR("Failed to create the DIR port\n"); + return ret; + } + } + + /* Save off port config for reconfig */ + ev_port->conf = *port_conf; + + ev_port->id = ev_port_id; + ev_port->enq_configured = true; + ev_port->setup_done = true; + ev_port->inflight_max = port_conf->new_event_threshold; + ev_port->implicit_release = !(port_conf->event_port_cfg & + RTE_EVENT_PORT_CFG_DISABLE_IMPL_REL); + ev_port->outstanding_releases = 0; + ev_port->inflight_credits = 0; + ev_port->credit_update_quanta = RTE_LIBRTE_PMD_DLB2_SW_CREDIT_QUANTA; + ev_port->dlb2 = dlb2; /* reverse link */ + + /* Tear down pre-existing port->queue links */ + if (dlb2->run_state == DLB2_RUN_STATE_STOPPED) + dlb2_port_link_teardown(dlb2, &dlb2->ev_ports[ev_port_id]); + + dev->data->ports[ev_port_id] = &dlb2->ev_ports[ev_port_id]; + + return 0; +} + static void dlb2_entry_points_init(struct rte_eventdev *dev) { @@ -1009,6 +1506,7 @@ dlb2_entry_points_init(struct rte_eventdev *dev) .queue_def_conf = dlb2_eventdev_queue_default_conf_get, .queue_setup = dlb2_eventdev_queue_setup, .port_def_conf = dlb2_eventdev_port_default_conf_get, + .port_setup = dlb2_eventdev_port_setup, .dump = dlb2_eventdev_dump, .xstats_get = dlb2_eventdev_xstats_get, .xstats_get_names = dlb2_eventdev_xstats_get_names, diff --git a/drivers/event/dlb2/dlb2_iface.c b/drivers/event/dlb2/dlb2_iface.c index 4c07574882..01818c744e 100644 --- a/drivers/event/dlb2/dlb2_iface.c +++ b/drivers/event/dlb2/dlb2_iface.c @@ -43,3 +43,11 @@ int (*dlb2_iface_set_sn_allocation)(struct dlb2_hw_dev *handle, int (*dlb2_iface_get_sn_occupancy)(struct dlb2_hw_dev *handle, struct dlb2_get_sn_occupancy_args *args); + +int (*dlb2_iface_ldb_port_create)(struct dlb2_hw_dev *handle, + struct dlb2_create_ldb_port_args *cfg, + enum dlb2_cq_poll_modes poll_mode); + +int (*dlb2_iface_dir_port_create)(struct dlb2_hw_dev *handle, + struct dlb2_create_dir_port_args *cfg, + enum dlb2_cq_poll_modes poll_mode); diff --git a/drivers/event/dlb2/dlb2_iface.h b/drivers/event/dlb2/dlb2_iface.h index 4c88fe09a0..a6b923afb6 100644 --- a/drivers/event/dlb2/dlb2_iface.h +++ b/drivers/event/dlb2/dlb2_iface.h @@ -42,4 +42,12 @@ extern int (*dlb2_iface_set_sn_allocation)(struct dlb2_hw_dev *handle, extern int (*dlb2_iface_get_sn_occupancy)(struct dlb2_hw_dev *handle, struct dlb2_get_sn_occupancy_args *args); + +extern int (*dlb2_iface_ldb_port_create)(struct dlb2_hw_dev *handle, + struct dlb2_create_ldb_port_args *cfg, + enum dlb2_cq_poll_modes poll_mode); + +extern int (*dlb2_iface_dir_port_create)(struct dlb2_hw_dev *handle, + struct dlb2_create_dir_port_args *cfg, + enum dlb2_cq_poll_modes poll_mode); #endif /* _DLB2_IFACE_H_ */ diff --git a/drivers/event/dlb2/pf/base/dlb2_resource.c b/drivers/event/dlb2/pf/base/dlb2_resource.c index e6ea0d755f..a633d3e2aa 100644 --- a/drivers/event/dlb2/pf/base/dlb2_resource.c +++ b/drivers/event/dlb2/pf/base/dlb2_resource.c @@ -3973,3 +3973,925 @@ int dlb2_set_group_sequence_numbers(struct dlb2_hw *hw, return 0; } + +static void dlb2_ldb_port_configure_pp(struct dlb2_hw *hw, + struct dlb2_hw_domain *domain, + struct dlb2_ldb_port *port, + bool vdev_req, + unsigned int vdev_id) +{ + union dlb2_sys_ldb_pp2vas r0 = { {0} }; + union dlb2_sys_ldb_pp_v r4 = { {0} }; + + r0.field.vas = domain->id.phys_id; + + DLB2_CSR_WR(hw, DLB2_SYS_LDB_PP2VAS(port->id.phys_id), r0.val); + + if (vdev_req) { + union dlb2_sys_vf_ldb_vpp2pp r1 = { {0} }; + union dlb2_sys_ldb_pp2vdev r2 = { {0} }; + union dlb2_sys_vf_ldb_vpp_v r3 = { {0} }; + unsigned int offs; + u32 virt_id; + + /* + * DLB uses producer port address bits 17:12 to determine the + * producer port ID. In Scalable IOV mode, PP accesses come + * through the PF MMIO window for the physical producer port, + * so for translation purposes the virtual and physical port + * IDs are equal. + */ + if (hw->virt_mode == DLB2_VIRT_SRIOV) + virt_id = port->id.virt_id; + else + virt_id = port->id.phys_id; + + r1.field.pp = port->id.phys_id; + + offs = vdev_id * DLB2_MAX_NUM_LDB_PORTS + virt_id; + + DLB2_CSR_WR(hw, DLB2_SYS_VF_LDB_VPP2PP(offs), r1.val); + + r2.field.vdev = vdev_id; + + DLB2_CSR_WR(hw, + DLB2_SYS_LDB_PP2VDEV(port->id.phys_id), + r2.val); + + r3.field.vpp_v = 1; + + DLB2_CSR_WR(hw, DLB2_SYS_VF_LDB_VPP_V(offs), r3.val); + } + + r4.field.pp_v = 1; + + DLB2_CSR_WR(hw, + DLB2_SYS_LDB_PP_V(port->id.phys_id), + r4.val); +} + +static int dlb2_ldb_port_configure_cq(struct dlb2_hw *hw, + struct dlb2_hw_domain *domain, + struct dlb2_ldb_port *port, + uintptr_t cq_dma_base, + struct dlb2_create_ldb_port_args *args, + bool vdev_req, + unsigned int vdev_id) +{ + union dlb2_sys_ldb_cq_addr_l r0 = { {0} }; + union dlb2_sys_ldb_cq_addr_u r1 = { {0} }; + union dlb2_sys_ldb_cq2vf_pf_ro r2 = { {0} }; + union dlb2_chp_ldb_cq_tkn_depth_sel r3 = { {0} }; + union dlb2_lsp_cq_ldb_tkn_depth_sel r4 = { {0} }; + union dlb2_chp_hist_list_lim r5 = { {0} }; + union dlb2_chp_hist_list_base r6 = { {0} }; + union dlb2_lsp_cq_ldb_infl_lim r7 = { {0} }; + union dlb2_chp_hist_list_push_ptr r8 = { {0} }; + union dlb2_chp_hist_list_pop_ptr r9 = { {0} }; + union dlb2_sys_ldb_cq_at r10 = { {0} }; + union dlb2_sys_ldb_cq_pasid r11 = { {0} }; + union dlb2_chp_ldb_cq2vas r12 = { {0} }; + union dlb2_lsp_cq2priov r13 = { {0} }; + + /* The CQ address is 64B-aligned, and the DLB only wants bits [63:6] */ + r0.field.addr_l = cq_dma_base >> 6; + + DLB2_CSR_WR(hw, DLB2_SYS_LDB_CQ_ADDR_L(port->id.phys_id), r0.val); + + r1.field.addr_u = cq_dma_base >> 32; + + DLB2_CSR_WR(hw, DLB2_SYS_LDB_CQ_ADDR_U(port->id.phys_id), r1.val); + + /* + * 'ro' == relaxed ordering. This setting allows DLB2 to write + * cache lines out-of-order (but QEs within a cache line are always + * updated in-order). + */ + r2.field.vf = vdev_id; + r2.field.is_pf = !vdev_req && (hw->virt_mode != DLB2_VIRT_SIOV); + r2.field.ro = 1; + + DLB2_CSR_WR(hw, DLB2_SYS_LDB_CQ2VF_PF_RO(port->id.phys_id), r2.val); + + if (args->cq_depth <= 8) { + r3.field.token_depth_select = 1; + } else if (args->cq_depth == 16) { + r3.field.token_depth_select = 2; + } else if (args->cq_depth == 32) { + r3.field.token_depth_select = 3; + } else if (args->cq_depth == 64) { + r3.field.token_depth_select = 4; + } else if (args->cq_depth == 128) { + r3.field.token_depth_select = 5; + } else if (args->cq_depth == 256) { + r3.field.token_depth_select = 6; + } else if (args->cq_depth == 512) { + r3.field.token_depth_select = 7; + } else if (args->cq_depth == 1024) { + r3.field.token_depth_select = 8; + } else { + DLB2_HW_ERR(hw, + "[%s():%d] Internal error: invalid CQ depth\n", + __func__, __LINE__); + return -EFAULT; + } + + DLB2_CSR_WR(hw, + DLB2_CHP_LDB_CQ_TKN_DEPTH_SEL(port->id.phys_id), + r3.val); + + /* + * To support CQs with depth less than 8, program the token count + * register with a non-zero initial value. Operations such as domain + * reset must take this initial value into account when quiescing the + * CQ. + */ + port->init_tkn_cnt = 0; + + if (args->cq_depth < 8) { + union dlb2_lsp_cq_ldb_tkn_cnt r14 = { {0} }; + + port->init_tkn_cnt = 8 - args->cq_depth; + + r14.field.token_count = port->init_tkn_cnt; + + DLB2_CSR_WR(hw, + DLB2_LSP_CQ_LDB_TKN_CNT(port->id.phys_id), + r14.val); + } else { + DLB2_CSR_WR(hw, + DLB2_LSP_CQ_LDB_TKN_CNT(port->id.phys_id), + DLB2_LSP_CQ_LDB_TKN_CNT_RST); + } + + r4.field.token_depth_select = r3.field.token_depth_select; + r4.field.ignore_depth = 0; + + DLB2_CSR_WR(hw, + DLB2_LSP_CQ_LDB_TKN_DEPTH_SEL(port->id.phys_id), + r4.val); + + /* Reset the CQ write pointer */ + DLB2_CSR_WR(hw, + DLB2_CHP_LDB_CQ_WPTR(port->id.phys_id), + DLB2_CHP_LDB_CQ_WPTR_RST); + + r5.field.limit = port->hist_list_entry_limit - 1; + + DLB2_CSR_WR(hw, DLB2_CHP_HIST_LIST_LIM(port->id.phys_id), r5.val); + + r6.field.base = port->hist_list_entry_base; + + DLB2_CSR_WR(hw, DLB2_CHP_HIST_LIST_BASE(port->id.phys_id), r6.val); + + /* + * The inflight limit sets a cap on the number of QEs for which this CQ + * can owe completions at one time. + */ + r7.field.limit = args->cq_history_list_size; + + DLB2_CSR_WR(hw, DLB2_LSP_CQ_LDB_INFL_LIM(port->id.phys_id), r7.val); + + r8.field.push_ptr = r6.field.base; + r8.field.generation = 0; + + DLB2_CSR_WR(hw, + DLB2_CHP_HIST_LIST_PUSH_PTR(port->id.phys_id), + r8.val); + + r9.field.pop_ptr = r6.field.base; + r9.field.generation = 0; + + DLB2_CSR_WR(hw, DLB2_CHP_HIST_LIST_POP_PTR(port->id.phys_id), r9.val); + + /* + * Address translation (AT) settings: 0: untranslated, 2: translated + * (see ATS spec regarding Address Type field for more details) + */ + r10.field.cq_at = 0; + + DLB2_CSR_WR(hw, DLB2_SYS_LDB_CQ_AT(port->id.phys_id), r10.val); + + if (vdev_req && hw->virt_mode == DLB2_VIRT_SIOV) { + r11.field.pasid = hw->pasid[vdev_id]; + r11.field.fmt2 = 1; + } + + DLB2_CSR_WR(hw, + DLB2_SYS_LDB_CQ_PASID(port->id.phys_id), + r11.val); + + r12.field.cq2vas = domain->id.phys_id; + + DLB2_CSR_WR(hw, DLB2_CHP_LDB_CQ2VAS(port->id.phys_id), r12.val); + + /* Disable the port's QID mappings */ + r13.field.v = 0; + + DLB2_CSR_WR(hw, DLB2_LSP_CQ2PRIOV(port->id.phys_id), r13.val); + + return 0; +} + +static int dlb2_configure_ldb_port(struct dlb2_hw *hw, + struct dlb2_hw_domain *domain, + struct dlb2_ldb_port *port, + uintptr_t cq_dma_base, + struct dlb2_create_ldb_port_args *args, + bool vdev_req, + unsigned int vdev_id) +{ + int ret, i; + + port->hist_list_entry_base = domain->hist_list_entry_base + + domain->hist_list_entry_offset; + port->hist_list_entry_limit = port->hist_list_entry_base + + args->cq_history_list_size; + + domain->hist_list_entry_offset += args->cq_history_list_size; + domain->avail_hist_list_entries -= args->cq_history_list_size; + + ret = dlb2_ldb_port_configure_cq(hw, + domain, + port, + cq_dma_base, + args, + vdev_req, + vdev_id); + if (ret < 0) + return ret; + + dlb2_ldb_port_configure_pp(hw, + domain, + port, + vdev_req, + vdev_id); + + dlb2_ldb_port_cq_enable(hw, port); + + for (i = 0; i < DLB2_MAX_NUM_QIDS_PER_LDB_CQ; i++) + port->qid_map[i].state = DLB2_QUEUE_UNMAPPED; + port->num_mappings = 0; + + port->enabled = true; + + port->configured = true; + + return 0; +} + +static void +dlb2_log_create_ldb_port_args(struct dlb2_hw *hw, + u32 domain_id, + uintptr_t cq_dma_base, + struct dlb2_create_ldb_port_args *args, + bool vdev_req, + unsigned int vdev_id) +{ + DLB2_HW_DBG(hw, "DLB2 create load-balanced port arguments:\n"); + if (vdev_req) + DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id); + DLB2_HW_DBG(hw, "\tDomain ID: %d\n", + domain_id); + DLB2_HW_DBG(hw, "\tCQ depth: %d\n", + args->cq_depth); + DLB2_HW_DBG(hw, "\tCQ hist list size: %d\n", + args->cq_history_list_size); + DLB2_HW_DBG(hw, "\tCQ base address: 0x%lx\n", + cq_dma_base); + DLB2_HW_DBG(hw, "\tCoS ID: %u\n", args->cos_id); + DLB2_HW_DBG(hw, "\tStrict CoS allocation: %u\n", + args->cos_strict); +} + +static int +dlb2_verify_create_ldb_port_args(struct dlb2_hw *hw, + u32 domain_id, + uintptr_t cq_dma_base, + struct dlb2_create_ldb_port_args *args, + struct dlb2_cmd_response *resp, + bool vdev_req, + unsigned int vdev_id) +{ + struct dlb2_hw_domain *domain; + int i; + + domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id); + + if (domain == NULL) { + resp->status = DLB2_ST_INVALID_DOMAIN_ID; + return -EINVAL; + } + + if (!domain->configured) { + resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED; + return -EINVAL; + } + + if (domain->started) { + resp->status = DLB2_ST_DOMAIN_STARTED; + return -EINVAL; + } + + if (args->cos_id >= DLB2_NUM_COS_DOMAINS) { + resp->status = DLB2_ST_INVALID_COS_ID; + return -EINVAL; + } + + if (args->cos_strict) { + if (dlb2_list_empty(&domain->avail_ldb_ports[args->cos_id])) { + resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE; + return -EINVAL; + } + } else { + for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) { + if (!dlb2_list_empty(&domain->avail_ldb_ports[i])) + break; + } + + if (i == DLB2_NUM_COS_DOMAINS) { + resp->status = DLB2_ST_LDB_PORTS_UNAVAILABLE; + return -EINVAL; + } + } + + /* Check cache-line alignment */ + if ((cq_dma_base & 0x3F) != 0) { + resp->status = DLB2_ST_INVALID_CQ_VIRT_ADDR; + return -EINVAL; + } + + if (args->cq_depth != 1 && + args->cq_depth != 2 && + args->cq_depth != 4 && + args->cq_depth != 8 && + args->cq_depth != 16 && + args->cq_depth != 32 && + args->cq_depth != 64 && + args->cq_depth != 128 && + args->cq_depth != 256 && + args->cq_depth != 512 && + args->cq_depth != 1024) { + resp->status = DLB2_ST_INVALID_CQ_DEPTH; + return -EINVAL; + } + + /* The history list size must be >= 1 */ + if (!args->cq_history_list_size) { + resp->status = DLB2_ST_INVALID_HIST_LIST_DEPTH; + return -EINVAL; + } + + if (args->cq_history_list_size > domain->avail_hist_list_entries) { + resp->status = DLB2_ST_HIST_LIST_ENTRIES_UNAVAILABLE; + return -EINVAL; + } + + return 0; +} + + +/** + * dlb2_hw_create_ldb_port() - Allocate and initialize a load-balanced port and + * its resources. + * @hw: Contains the current state of the DLB2 hardware. + * @domain_id: Domain ID + * @args: User-provided arguments. + * @cq_dma_base: Base DMA address for consumer queue memory + * @resp: Response to user. + * @vdev_req: Request came from a virtual device. + * @vdev_id: If vdev_req is true, this contains the virtual device's ID. + * + * Return: returns < 0 on error, 0 otherwise. If the driver is unable to + * satisfy a request, resp->status will be set accordingly. + */ +int dlb2_hw_create_ldb_port(struct dlb2_hw *hw, + u32 domain_id, + struct dlb2_create_ldb_port_args *args, + uintptr_t cq_dma_base, + struct dlb2_cmd_response *resp, + bool vdev_req, + unsigned int vdev_id) +{ + struct dlb2_hw_domain *domain; + struct dlb2_ldb_port *port; + int ret, cos_id, i; + + dlb2_log_create_ldb_port_args(hw, + domain_id, + cq_dma_base, + args, + vdev_req, + vdev_id); + + /* + * Verify that hardware resources are available before attempting to + * satisfy the request. This simplifies the error unwinding code. + */ + ret = dlb2_verify_create_ldb_port_args(hw, + domain_id, + cq_dma_base, + args, + resp, + vdev_req, + vdev_id); + if (ret) + return ret; + + domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id); + if (domain == NULL) { + DLB2_HW_ERR(hw, + "[%s():%d] Internal error: domain not found\n", + __func__, __LINE__); + return -EFAULT; + } + + if (args->cos_strict) { + cos_id = args->cos_id; + + port = DLB2_DOM_LIST_HEAD(domain->avail_ldb_ports[cos_id], + typeof(*port)); + } else { + int idx; + + for (i = 0; i < DLB2_NUM_COS_DOMAINS; i++) { + idx = (args->cos_id + i) % DLB2_NUM_COS_DOMAINS; + + port = DLB2_DOM_LIST_HEAD(domain->avail_ldb_ports[idx], + typeof(*port)); + if (port) + break; + } + + cos_id = idx; + } + + if (port == NULL) { + DLB2_HW_ERR(hw, + "[%s():%d] Internal error: no available ldb ports\n", + __func__, __LINE__); + return -EFAULT; + } + + if (port->configured) { + DLB2_HW_ERR(hw, + "[%s()] Internal error: avail_ldb_ports contains configured ports.\n", + __func__); + return -EFAULT; + } + + ret = dlb2_configure_ldb_port(hw, + domain, + port, + cq_dma_base, + args, + vdev_req, + vdev_id); + if (ret < 0) + return ret; + + /* + * Configuration succeeded, so move the resource from the 'avail' to + * the 'used' list. + */ + dlb2_list_del(&domain->avail_ldb_ports[cos_id], &port->domain_list); + + dlb2_list_add(&domain->used_ldb_ports[cos_id], &port->domain_list); + + resp->status = 0; + resp->id = (vdev_req) ? port->id.virt_id : port->id.phys_id; + + return 0; +} + +static void +dlb2_log_create_dir_port_args(struct dlb2_hw *hw, + u32 domain_id, + uintptr_t cq_dma_base, + struct dlb2_create_dir_port_args *args, + bool vdev_req, + unsigned int vdev_id) +{ + DLB2_HW_DBG(hw, "DLB2 create directed port arguments:\n"); + if (vdev_req) + DLB2_HW_DBG(hw, "(Request from vdev %d)\n", vdev_id); + DLB2_HW_DBG(hw, "\tDomain ID: %d\n", + domain_id); + DLB2_HW_DBG(hw, "\tCQ depth: %d\n", + args->cq_depth); + DLB2_HW_DBG(hw, "\tCQ base address: 0x%lx\n", + cq_dma_base); +} + +static struct dlb2_dir_pq_pair * +dlb2_get_domain_used_dir_pq(u32 id, + bool vdev_req, + struct dlb2_hw_domain *domain) +{ + struct dlb2_list_entry *iter; + struct dlb2_dir_pq_pair *port; + RTE_SET_USED(iter); + + if (id >= DLB2_MAX_NUM_DIR_PORTS) + return NULL; + + DLB2_DOM_LIST_FOR(domain->used_dir_pq_pairs, port, iter) + if ((!vdev_req && port->id.phys_id == id) || + (vdev_req && port->id.virt_id == id)) + return port; + + return NULL; +} + +static int +dlb2_verify_create_dir_port_args(struct dlb2_hw *hw, + u32 domain_id, + uintptr_t cq_dma_base, + struct dlb2_create_dir_port_args *args, + struct dlb2_cmd_response *resp, + bool vdev_req, + unsigned int vdev_id) +{ + struct dlb2_hw_domain *domain; + + domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id); + + if (domain == NULL) { + resp->status = DLB2_ST_INVALID_DOMAIN_ID; + return -EINVAL; + } + + if (!domain->configured) { + resp->status = DLB2_ST_DOMAIN_NOT_CONFIGURED; + return -EINVAL; + } + + if (domain->started) { + resp->status = DLB2_ST_DOMAIN_STARTED; + return -EINVAL; + } + + /* + * If the user claims the queue is already configured, validate + * the queue ID, its domain, and whether the queue is configured. + */ + if (args->queue_id != -1) { + struct dlb2_dir_pq_pair *queue; + + queue = dlb2_get_domain_used_dir_pq(args->queue_id, + vdev_req, + domain); + + if (queue == NULL || queue->domain_id.phys_id != + domain->id.phys_id || + !queue->queue_configured) { + resp->status = DLB2_ST_INVALID_DIR_QUEUE_ID; + return -EINVAL; + } + } + + /* + * If the port's queue is not configured, validate that a free + * port-queue pair is available. + */ + if (args->queue_id == -1 && + dlb2_list_empty(&domain->avail_dir_pq_pairs)) { + resp->status = DLB2_ST_DIR_PORTS_UNAVAILABLE; + return -EINVAL; + } + + /* Check cache-line alignment */ + if ((cq_dma_base & 0x3F) != 0) { + resp->status = DLB2_ST_INVALID_CQ_VIRT_ADDR; + return -EINVAL; + } + + if (args->cq_depth != 1 && + args->cq_depth != 2 && + args->cq_depth != 4 && + args->cq_depth != 8 && + args->cq_depth != 16 && + args->cq_depth != 32 && + args->cq_depth != 64 && + args->cq_depth != 128 && + args->cq_depth != 256 && + args->cq_depth != 512 && + args->cq_depth != 1024) { + resp->status = DLB2_ST_INVALID_CQ_DEPTH; + return -EINVAL; + } + + return 0; +} + +static void dlb2_dir_port_configure_pp(struct dlb2_hw *hw, + struct dlb2_hw_domain *domain, + struct dlb2_dir_pq_pair *port, + bool vdev_req, + unsigned int vdev_id) +{ + union dlb2_sys_dir_pp2vas r0 = { {0} }; + union dlb2_sys_dir_pp_v r4 = { {0} }; + + r0.field.vas = domain->id.phys_id; + + DLB2_CSR_WR(hw, DLB2_SYS_DIR_PP2VAS(port->id.phys_id), r0.val); + + if (vdev_req) { + union dlb2_sys_vf_dir_vpp2pp r1 = { {0} }; + union dlb2_sys_dir_pp2vdev r2 = { {0} }; + union dlb2_sys_vf_dir_vpp_v r3 = { {0} }; + unsigned int offs; + u32 virt_id; + + /* + * DLB uses producer port address bits 17:12 to determine the + * producer port ID. In Scalable IOV mode, PP accesses come + * through the PF MMIO window for the physical producer port, + * so for translation purposes the virtual and physical port + * IDs are equal. + */ + if (hw->virt_mode == DLB2_VIRT_SRIOV) + virt_id = port->id.virt_id; + else + virt_id = port->id.phys_id; + + r1.field.pp = port->id.phys_id; + + offs = vdev_id * DLB2_MAX_NUM_DIR_PORTS + virt_id; + + DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VPP2PP(offs), r1.val); + + r2.field.vdev = vdev_id; + + DLB2_CSR_WR(hw, + DLB2_SYS_DIR_PP2VDEV(port->id.phys_id), + r2.val); + + r3.field.vpp_v = 1; + + DLB2_CSR_WR(hw, DLB2_SYS_VF_DIR_VPP_V(offs), r3.val); + } + + r4.field.pp_v = 1; + + DLB2_CSR_WR(hw, + DLB2_SYS_DIR_PP_V(port->id.phys_id), + r4.val); +} + +static int dlb2_dir_port_configure_cq(struct dlb2_hw *hw, + struct dlb2_hw_domain *domain, + struct dlb2_dir_pq_pair *port, + uintptr_t cq_dma_base, + struct dlb2_create_dir_port_args *args, + bool vdev_req, + unsigned int vdev_id) +{ + union dlb2_sys_dir_cq_addr_l r0 = { {0} }; + union dlb2_sys_dir_cq_addr_u r1 = { {0} }; + union dlb2_sys_dir_cq2vf_pf_ro r2 = { {0} }; + union dlb2_chp_dir_cq_tkn_depth_sel r3 = { {0} }; + union dlb2_lsp_cq_dir_tkn_depth_sel_dsi r4 = { {0} }; + union dlb2_sys_dir_cq_fmt r9 = { {0} }; + union dlb2_sys_dir_cq_at r10 = { {0} }; + union dlb2_sys_dir_cq_pasid r11 = { {0} }; + union dlb2_chp_dir_cq2vas r12 = { {0} }; + + /* The CQ address is 64B-aligned, and the DLB only wants bits [63:6] */ + r0.field.addr_l = cq_dma_base >> 6; + + DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ_ADDR_L(port->id.phys_id), r0.val); + + r1.field.addr_u = cq_dma_base >> 32; + + DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ_ADDR_U(port->id.phys_id), r1.val); + + /* + * 'ro' == relaxed ordering. This setting allows DLB2 to write + * cache lines out-of-order (but QEs within a cache line are always + * updated in-order). + */ + r2.field.vf = vdev_id; + r2.field.is_pf = !vdev_req && (hw->virt_mode != DLB2_VIRT_SIOV); + r2.field.ro = 1; + + DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ2VF_PF_RO(port->id.phys_id), r2.val); + + if (args->cq_depth <= 8) { + r3.field.token_depth_select = 1; + } else if (args->cq_depth == 16) { + r3.field.token_depth_select = 2; + } else if (args->cq_depth == 32) { + r3.field.token_depth_select = 3; + } else if (args->cq_depth == 64) { + r3.field.token_depth_select = 4; + } else if (args->cq_depth == 128) { + r3.field.token_depth_select = 5; + } else if (args->cq_depth == 256) { + r3.field.token_depth_select = 6; + } else if (args->cq_depth == 512) { + r3.field.token_depth_select = 7; + } else if (args->cq_depth == 1024) { + r3.field.token_depth_select = 8; + } else { + DLB2_HW_ERR(hw, + "[%s():%d] Internal error: invalid CQ depth\n", + __func__, __LINE__); + return -EFAULT; + } + + DLB2_CSR_WR(hw, + DLB2_CHP_DIR_CQ_TKN_DEPTH_SEL(port->id.phys_id), + r3.val); + + /* + * To support CQs with depth less than 8, program the token count + * register with a non-zero initial value. Operations such as domain + * reset must take this initial value into account when quiescing the + * CQ. + */ + port->init_tkn_cnt = 0; + + if (args->cq_depth < 8) { + union dlb2_lsp_cq_dir_tkn_cnt r13 = { {0} }; + + port->init_tkn_cnt = 8 - args->cq_depth; + + r13.field.count = port->init_tkn_cnt; + + DLB2_CSR_WR(hw, + DLB2_LSP_CQ_DIR_TKN_CNT(port->id.phys_id), + r13.val); + } else { + DLB2_CSR_WR(hw, + DLB2_LSP_CQ_DIR_TKN_CNT(port->id.phys_id), + DLB2_LSP_CQ_DIR_TKN_CNT_RST); + } + + r4.field.token_depth_select = r3.field.token_depth_select; + r4.field.disable_wb_opt = 0; + r4.field.ignore_depth = 0; + + DLB2_CSR_WR(hw, + DLB2_LSP_CQ_DIR_TKN_DEPTH_SEL_DSI(port->id.phys_id), + r4.val); + + /* Reset the CQ write pointer */ + DLB2_CSR_WR(hw, + DLB2_CHP_DIR_CQ_WPTR(port->id.phys_id), + DLB2_CHP_DIR_CQ_WPTR_RST); + + /* Virtualize the PPID */ + r9.field.keep_pf_ppid = 0; + + DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ_FMT(port->id.phys_id), r9.val); + + /* + * Address translation (AT) settings: 0: untranslated, 2: translated + * (see ATS spec regarding Address Type field for more details) + */ + r10.field.cq_at = 0; + + DLB2_CSR_WR(hw, DLB2_SYS_DIR_CQ_AT(port->id.phys_id), r10.val); + + if (vdev_req && hw->virt_mode == DLB2_VIRT_SIOV) { + r11.field.pasid = hw->pasid[vdev_id]; + r11.field.fmt2 = 1; + } + + DLB2_CSR_WR(hw, + DLB2_SYS_DIR_CQ_PASID(port->id.phys_id), + r11.val); + + r12.field.cq2vas = domain->id.phys_id; + + DLB2_CSR_WR(hw, DLB2_CHP_DIR_CQ2VAS(port->id.phys_id), r12.val); + + return 0; +} + +static int dlb2_configure_dir_port(struct dlb2_hw *hw, + struct dlb2_hw_domain *domain, + struct dlb2_dir_pq_pair *port, + uintptr_t cq_dma_base, + struct dlb2_create_dir_port_args *args, + bool vdev_req, + unsigned int vdev_id) +{ + int ret; + + ret = dlb2_dir_port_configure_cq(hw, + domain, + port, + cq_dma_base, + args, + vdev_req, + vdev_id); + + if (ret < 0) + return ret; + + dlb2_dir_port_configure_pp(hw, + domain, + port, + vdev_req, + vdev_id); + + dlb2_dir_port_cq_enable(hw, port); + + port->enabled = true; + + port->port_configured = true; + + return 0; +} + +/** + * dlb2_hw_create_dir_port() - Allocate and initialize a DLB directed port + * and queue. The port/queue pair have the same ID and name. + * @hw: Contains the current state of the DLB2 hardware. + * @domain_id: Domain ID + * @args: User-provided arguments. + * @cq_dma_base: Base DMA address for consumer queue memory + * @resp: Response to user. + * @vdev_req: Request came from a virtual device. + * @vdev_id: If vdev_req is true, this contains the virtual device's ID. + * + * Return: returns < 0 on error, 0 otherwise. If the driver is unable to + * satisfy a request, resp->status will be set accordingly. + */ +int dlb2_hw_create_dir_port(struct dlb2_hw *hw, + u32 domain_id, + struct dlb2_create_dir_port_args *args, + uintptr_t cq_dma_base, + struct dlb2_cmd_response *resp, + bool vdev_req, + unsigned int vdev_id) +{ + struct dlb2_dir_pq_pair *port; + struct dlb2_hw_domain *domain; + int ret; + + dlb2_log_create_dir_port_args(hw, + domain_id, + cq_dma_base, + args, + vdev_req, + vdev_id); + + /* + * Verify that hardware resources are available before attempting to + * satisfy the request. This simplifies the error unwinding code. + */ + ret = dlb2_verify_create_dir_port_args(hw, + domain_id, + cq_dma_base, + args, + resp, + vdev_req, + vdev_id); + if (ret) + return ret; + + domain = dlb2_get_domain_from_id(hw, domain_id, vdev_req, vdev_id); + + if (args->queue_id != -1) + port = dlb2_get_domain_used_dir_pq(args->queue_id, + vdev_req, + domain); + else + port = DLB2_DOM_LIST_HEAD(domain->avail_dir_pq_pairs, + typeof(*port)); + if (port == NULL) { + DLB2_HW_ERR(hw, + "[%s():%d] Internal error: no available dir ports\n", + __func__, __LINE__); + return -EFAULT; + } + + ret = dlb2_configure_dir_port(hw, + domain, + port, + cq_dma_base, + args, + vdev_req, + vdev_id); + if (ret < 0) + return ret; + + /* + * Configuration succeeded, so move the resource from the 'avail' to + * the 'used' list (if it's not already there). + */ + if (args->queue_id == -1) { + dlb2_list_del(&domain->avail_dir_pq_pairs, &port->domain_list); + + dlb2_list_add(&domain->used_dir_pq_pairs, &port->domain_list); + } + + resp->status = 0; + resp->id = (vdev_req) ? port->id.virt_id : port->id.phys_id; + + return 0; +} diff --git a/drivers/event/dlb2/pf/dlb2_main.c b/drivers/event/dlb2/pf/dlb2_main.c index 9c734e746e..7104f9b815 100644 --- a/drivers/event/dlb2/pf/dlb2_main.c +++ b/drivers/event/dlb2/pf/dlb2_main.c @@ -623,3 +623,31 @@ dlb2_pf_create_ldb_queue(struct dlb2_hw *hw, return dlb2_hw_create_ldb_queue(hw, id, args, resp, NOT_VF_REQ, PF_ID_ZERO); } + +int +dlb2_pf_create_ldb_port(struct dlb2_hw *hw, + u32 id, + struct dlb2_create_ldb_port_args *args, + uintptr_t cq_dma_base, + struct dlb2_cmd_response *resp) +{ + return dlb2_hw_create_ldb_port(hw, id, args, + cq_dma_base, + resp, + NOT_VF_REQ, + PF_ID_ZERO); +} + +int +dlb2_pf_create_dir_port(struct dlb2_hw *hw, + u32 id, + struct dlb2_create_dir_port_args *args, + uintptr_t cq_dma_base, + struct dlb2_cmd_response *resp) +{ + return dlb2_hw_create_dir_port(hw, id, args, + cq_dma_base, + resp, + NOT_VF_REQ, + PF_ID_ZERO); +} diff --git a/drivers/event/dlb2/pf/dlb2_pf.c b/drivers/event/dlb2/pf/dlb2_pf.c index a6cd1780bf..2a82b8f389 100644 --- a/drivers/event/dlb2/pf/dlb2_pf.c +++ b/drivers/event/dlb2/pf/dlb2_pf.c @@ -228,6 +228,184 @@ dlb2_pf_set_sn_allocation(struct dlb2_hw_dev *handle, return ret; } +static void * +dlb2_alloc_coherent_aligned(const struct rte_memzone **mz, uintptr_t *phys, + size_t size, int align) +{ + char mz_name[RTE_MEMZONE_NAMESIZE]; + uint32_t core_id = rte_lcore_id(); + unsigned int socket_id; + + snprintf(mz_name, sizeof(mz_name) - 1, "event_dlb2_pf_%lx", + (unsigned long)rte_get_timer_cycles()); + if (core_id == (unsigned int)LCORE_ID_ANY) + core_id = rte_get_main_lcore(); + socket_id = rte_lcore_to_socket_id(core_id); + *mz = rte_memzone_reserve_aligned(mz_name, size, socket_id, + RTE_MEMZONE_IOVA_CONTIG, align); + if (*mz == NULL) { + DLB2_LOG_DBG("Unable to allocate DMA memory of size %zu bytes - %s\n", + size, rte_strerror(rte_errno)); + *phys = 0; + return NULL; + } + *phys = (*mz)->iova; + return (*mz)->addr; +} + +static int +dlb2_pf_ldb_port_create(struct dlb2_hw_dev *handle, + struct dlb2_create_ldb_port_args *cfg, + enum dlb2_cq_poll_modes poll_mode) +{ + struct dlb2_dev *dlb2_dev = (struct dlb2_dev *)handle->pf_dev; + struct dlb2_cmd_response response = {0}; + struct dlb2_port_memory port_memory; + int ret, cq_alloc_depth; + uint8_t *port_base; + const struct rte_memzone *mz; + int alloc_sz, qe_sz; + phys_addr_t cq_base; + phys_addr_t pp_base; + int is_dir = false; + + DLB2_INFO(dev->dlb2_device, "Entering %s()\n", __func__); + + if (poll_mode == DLB2_CQ_POLL_MODE_STD) + qe_sz = sizeof(struct dlb2_dequeue_qe); + else + qe_sz = RTE_CACHE_LINE_SIZE; + + /* Calculate the port memory required, and round up to the nearest + * cache line. + */ + cq_alloc_depth = RTE_MAX(cfg->cq_depth, DLB2_MIN_HARDWARE_CQ_DEPTH); + alloc_sz = cq_alloc_depth * qe_sz; + alloc_sz = RTE_CACHE_LINE_ROUNDUP(alloc_sz); + + port_base = dlb2_alloc_coherent_aligned(&mz, &cq_base, alloc_sz, + PAGE_SIZE); + if (port_base == NULL) + return -ENOMEM; + + /* Lock the page in memory */ + ret = rte_mem_lock_page(port_base); + if (ret < 0) { + DLB2_LOG_ERR("dlb2 pf pmd could not lock page for device i/o\n"); + goto create_port_err; + } + + memset(port_base, 0, alloc_sz); + + ret = dlb2_pf_create_ldb_port(&dlb2_dev->hw, + handle->domain_id, + cfg, + cq_base, + &response); + if (ret) + goto create_port_err; + + pp_base = (uintptr_t)dlb2_dev->hw.func_kva + PP_BASE(is_dir); + dlb2_port[response.id][DLB2_LDB_PORT].pp_addr = + (void *)(pp_base + (PAGE_SIZE * response.id)); + + dlb2_port[response.id][DLB2_LDB_PORT].cq_base = (void *)(port_base); + memset(&port_memory, 0, sizeof(port_memory)); + + dlb2_port[response.id][DLB2_LDB_PORT].mz = mz; + + dlb2_list_init_head(&port_memory.list); + + cfg->response = response; + + return 0; + +create_port_err: + + rte_memzone_free(mz); + + DLB2_INFO(dev->dlb2_device, "Exiting %s() with ret=%d\n", + __func__, ret); + return ret; +} + +static int +dlb2_pf_dir_port_create(struct dlb2_hw_dev *handle, + struct dlb2_create_dir_port_args *cfg, + enum dlb2_cq_poll_modes poll_mode) +{ + struct dlb2_dev *dlb2_dev = (struct dlb2_dev *)handle->pf_dev; + struct dlb2_cmd_response response = {0}; + struct dlb2_port_memory port_memory; + int ret; + uint8_t *port_base; + const struct rte_memzone *mz; + int alloc_sz, qe_sz; + phys_addr_t cq_base; + phys_addr_t pp_base; + int is_dir = true; + + DLB2_INFO(dev->dlb2_device, "Entering %s()\n", __func__); + + if (poll_mode == DLB2_CQ_POLL_MODE_STD) + qe_sz = sizeof(struct dlb2_dequeue_qe); + else + qe_sz = RTE_CACHE_LINE_SIZE; + + /* Calculate the port memory required, and round up to the nearest + * cache line. + */ + alloc_sz = cfg->cq_depth * qe_sz; + alloc_sz = RTE_CACHE_LINE_ROUNDUP(alloc_sz); + + port_base = dlb2_alloc_coherent_aligned(&mz, &cq_base, alloc_sz, + PAGE_SIZE); + if (port_base == NULL) + return -ENOMEM; + + /* Lock the page in memory */ + ret = rte_mem_lock_page(port_base); + if (ret < 0) { + DLB2_LOG_ERR("dlb2 pf pmd could not lock page for device i/o\n"); + goto create_port_err; + } + + memset(port_base, 0, alloc_sz); + + ret = dlb2_pf_create_dir_port(&dlb2_dev->hw, + handle->domain_id, + cfg, + cq_base, + &response); + if (ret) + goto create_port_err; + + pp_base = (uintptr_t)dlb2_dev->hw.func_kva + PP_BASE(is_dir); + dlb2_port[response.id][DLB2_DIR_PORT].pp_addr = + (void *)(pp_base + (PAGE_SIZE * response.id)); + + dlb2_port[response.id][DLB2_DIR_PORT].cq_base = + (void *)(port_base); + memset(&port_memory, 0, sizeof(port_memory)); + + dlb2_port[response.id][DLB2_DIR_PORT].mz = mz; + + dlb2_list_init_head(&port_memory.list); + + cfg->response = response; + + return 0; + +create_port_err: + + rte_memzone_free(mz); + + DLB2_INFO(dev->dlb2_device, "Exiting %s() with ret=%d\n", + __func__, ret); + + return ret; +} + static void dlb2_pf_iface_fn_ptrs_init(void) { @@ -240,6 +418,8 @@ dlb2_pf_iface_fn_ptrs_init(void) dlb2_iface_get_cq_poll_mode = dlb2_pf_get_cq_poll_mode; dlb2_iface_sched_domain_create = dlb2_pf_sched_domain_create; dlb2_iface_ldb_queue_create = dlb2_pf_ldb_queue_create; + dlb2_iface_ldb_port_create = dlb2_pf_ldb_port_create; + dlb2_iface_dir_port_create = dlb2_pf_dir_port_create; dlb2_iface_get_sn_allocation = dlb2_pf_get_sn_allocation; dlb2_iface_set_sn_allocation = dlb2_pf_set_sn_allocation; dlb2_iface_get_sn_occupancy = dlb2_pf_get_sn_occupancy;