/* SPDX-License-Identifier: BSD-3-Clause * Copyright(c) 2016-2020 Intel Corporation */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "dlb_priv.h" #include "dlb_iface.h" #include "dlb_inline_fns.h" /* * Resources exposed to eventdev. */ #if (RTE_EVENT_MAX_QUEUES_PER_DEV > UINT8_MAX) #error "RTE_EVENT_MAX_QUEUES_PER_DEV cannot fit in member max_event_queues" #endif static struct rte_event_dev_info evdev_dlb_default_info = { .driver_name = "", /* probe will set */ .min_dequeue_timeout_ns = DLB_MIN_DEQUEUE_TIMEOUT_NS, .max_dequeue_timeout_ns = DLB_MAX_DEQUEUE_TIMEOUT_NS, #if (RTE_EVENT_MAX_QUEUES_PER_DEV < DLB_MAX_NUM_LDB_QUEUES) .max_event_queues = RTE_EVENT_MAX_QUEUES_PER_DEV, #else .max_event_queues = DLB_MAX_NUM_LDB_QUEUES, #endif .max_event_queue_flows = DLB_MAX_NUM_FLOWS, .max_event_queue_priority_levels = DLB_QID_PRIORITIES, .max_event_priority_levels = DLB_QID_PRIORITIES, .max_event_ports = DLB_MAX_NUM_LDB_PORTS, .max_event_port_dequeue_depth = DLB_MAX_CQ_DEPTH, .max_event_port_enqueue_depth = DLB_MAX_ENQUEUE_DEPTH, .max_event_port_links = DLB_MAX_NUM_QIDS_PER_LDB_CQ, .max_num_events = DLB_MAX_NUM_LDB_CREDITS, .max_single_link_event_port_queue_pairs = DLB_MAX_NUM_DIR_PORTS, .event_dev_cap = (RTE_EVENT_DEV_CAP_QUEUE_QOS | RTE_EVENT_DEV_CAP_EVENT_QOS | RTE_EVENT_DEV_CAP_BURST_MODE | RTE_EVENT_DEV_CAP_DISTRIBUTED_SCHED | RTE_EVENT_DEV_CAP_IMPLICIT_RELEASE_DISABLE | RTE_EVENT_DEV_CAP_QUEUE_ALL_TYPES), }; struct process_local_port_data dlb_port[DLB_MAX_NUM_PORTS][NUM_DLB_PORT_TYPES]; static inline uint16_t dlb_event_enqueue_delayed(void *event_port, const struct rte_event events[]); static inline uint16_t dlb_event_enqueue_burst_delayed(void *event_port, const struct rte_event events[], uint16_t num); static inline uint16_t dlb_event_enqueue_new_burst_delayed(void *event_port, const struct rte_event events[], uint16_t num); static inline uint16_t dlb_event_enqueue_forward_burst_delayed(void *event_port, const struct rte_event events[], uint16_t num); static int dlb_hw_query_resources(struct dlb_eventdev *dlb) { struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_hw_resource_info *dlb_info = &handle->info; int ret; ret = dlb_iface_get_num_resources(handle, &dlb->hw_rsrc_query_results); if (ret) { DLB_LOG_ERR("get dlb num resources, err=%d\n", ret); return ret; } /* Complete filling in device resource info returned to evdev app, * overriding any default values. * The capabilities (CAPs) were set at compile time. */ evdev_dlb_default_info.max_event_queues = dlb->hw_rsrc_query_results.num_ldb_queues; evdev_dlb_default_info.max_event_ports = dlb->hw_rsrc_query_results.num_ldb_ports; evdev_dlb_default_info.max_num_events = dlb->hw_rsrc_query_results.max_contiguous_ldb_credits; /* Save off values used when creating the scheduling domain. */ handle->info.num_sched_domains = dlb->hw_rsrc_query_results.num_sched_domains; handle->info.hw_rsrc_max.nb_events_limit = dlb->hw_rsrc_query_results.max_contiguous_ldb_credits; handle->info.hw_rsrc_max.num_queues = dlb->hw_rsrc_query_results.num_ldb_queues + dlb->hw_rsrc_query_results.num_dir_ports; handle->info.hw_rsrc_max.num_ldb_queues = dlb->hw_rsrc_query_results.num_ldb_queues; handle->info.hw_rsrc_max.num_ldb_ports = dlb->hw_rsrc_query_results.num_ldb_ports; handle->info.hw_rsrc_max.num_dir_ports = dlb->hw_rsrc_query_results.num_dir_ports; handle->info.hw_rsrc_max.reorder_window_size = dlb->hw_rsrc_query_results.num_hist_list_entries; rte_memcpy(dlb_info, &handle->info.hw_rsrc_max, sizeof(*dlb_info)); return 0; } static void dlb_free_qe_mem(struct dlb_port *qm_port) { if (qm_port == NULL) return; rte_free(qm_port->qe4); qm_port->qe4 = NULL; rte_free(qm_port->consume_qe); qm_port->consume_qe = NULL; rte_memzone_free(dlb_port[qm_port->id][PORT_TYPE(qm_port)].mz); dlb_port[qm_port->id][PORT_TYPE(qm_port)].mz = NULL; } static int dlb_init_consume_qe(struct dlb_port *qm_port, char *mz_name) { struct dlb_cq_pop_qe *qe; qe = rte_zmalloc(mz_name, DLB_NUM_QES_PER_CACHE_LINE * sizeof(struct dlb_cq_pop_qe), RTE_CACHE_LINE_SIZE); if (qe == NULL) { DLB_LOG_ERR("dlb: 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 dlb_init_qe_mem(struct dlb_port *qm_port, char *mz_name) { int ret, sz; sz = DLB_NUM_QES_PER_CACHE_LINE * sizeof(struct dlb_enqueue_qe); qm_port->qe4 = rte_zmalloc(mz_name, sz, RTE_CACHE_LINE_SIZE); if (qm_port->qe4 == NULL) { DLB_LOG_ERR("dlb: no qe4 memory\n"); ret = -ENOMEM; goto error_exit; } ret = dlb_init_consume_qe(qm_port, mz_name); if (ret < 0) { DLB_LOG_ERR("dlb: dlb_init_consume_qe ret=%d\n", ret); goto error_exit; } return 0; error_exit: dlb_free_qe_mem(qm_port); return ret; } /* Wrapper for string to int conversion. Substituted for atoi(...), which is * unsafe. */ #define DLB_BASE_10 10 static int dlb_string_to_int(int *result, const char *str) { long ret; char *endstr; if (str == NULL || result == NULL) return -EINVAL; errno = 0; ret = strtol(str, &endstr, DLB_BASE_10); if (errno) return -errno; /* long int and int may be different width for some architectures */ if (ret < INT_MIN || ret > INT_MAX || endstr == str) return -EINVAL; *result = ret; return 0; } static int set_numa_node(const char *key __rte_unused, const char *value, void *opaque) { int *socket_id = opaque; int ret; ret = dlb_string_to_int(socket_id, value); if (ret < 0) return ret; if (*socket_id > RTE_MAX_NUMA_NODES) return -EINVAL; return 0; } static int set_max_num_events(const char *key __rte_unused, const char *value, void *opaque) { int *max_num_events = opaque; int ret; if (value == NULL || opaque == NULL) { DLB_LOG_ERR("NULL pointer\n"); return -EINVAL; } ret = dlb_string_to_int(max_num_events, value); if (ret < 0) return ret; if (*max_num_events < 0 || *max_num_events > DLB_MAX_NUM_LDB_CREDITS) { DLB_LOG_ERR("dlb: max_num_events must be between 0 and %d\n", DLB_MAX_NUM_LDB_CREDITS); return -EINVAL; } return 0; } static int set_num_dir_credits(const char *key __rte_unused, const char *value, void *opaque) { int *num_dir_credits = opaque; int ret; if (value == NULL || opaque == NULL) { DLB_LOG_ERR("NULL pointer\n"); return -EINVAL; } ret = dlb_string_to_int(num_dir_credits, value); if (ret < 0) return ret; if (*num_dir_credits < 0 || *num_dir_credits > DLB_MAX_NUM_DIR_CREDITS) { DLB_LOG_ERR("dlb: num_dir_credits must be between 0 and %d\n", DLB_MAX_NUM_DIR_CREDITS); return -EINVAL; } return 0; } /* VDEV-only notes: * This function first unmaps all memory mappings and closes the * domain's file descriptor, which causes the driver to reset the * scheduling domain. Once that completes (when close() returns), we * can safely free the dynamically allocated memory used by the * scheduling domain. * * PF-only notes: * We will maintain a use count and use that to determine when * a reset is required. In PF mode, we never mmap, or munmap * device memory, and we own the entire physical PCI device. */ static void dlb_hw_reset_sched_domain(const struct rte_eventdev *dev, bool reconfig) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); enum dlb_configuration_state config_state; int i, j; /* Close and reset the domain */ dlb_iface_domain_close(dlb); /* Free all dynamically allocated port memory */ for (i = 0; i < dlb->num_ports; i++) dlb_free_qe_mem(&dlb->ev_ports[i].qm_port); /* If reconfiguring, mark the device's queues and ports as "previously * configured." If the user does not reconfigure them, the PMD will * reapply their previous configuration when the device is started. */ config_state = (reconfig) ? DLB_PREV_CONFIGURED : DLB_NOT_CONFIGURED; for (i = 0; i < dlb->num_ports; i++) { dlb->ev_ports[i].qm_port.config_state = config_state; /* Reset setup_done so ports can be reconfigured */ dlb->ev_ports[i].setup_done = false; for (j = 0; j < DLB_MAX_NUM_QIDS_PER_LDB_CQ; j++) dlb->ev_ports[i].link[j].mapped = false; } for (i = 0; i < dlb->num_queues; i++) dlb->ev_queues[i].qm_queue.config_state = config_state; for (i = 0; i < DLB_MAX_NUM_QUEUES; i++) dlb->ev_queues[i].setup_done = false; dlb->num_ports = 0; dlb->num_ldb_ports = 0; dlb->num_dir_ports = 0; dlb->num_queues = 0; dlb->num_ldb_queues = 0; dlb->num_dir_queues = 0; dlb->configured = false; } static int dlb_ldb_credit_pool_create(struct dlb_hw_dev *handle) { struct dlb_create_ldb_pool_args cfg; struct dlb_cmd_response response; int ret; if (handle == NULL) return -EINVAL; if (!handle->cfg.resources.num_ldb_credits) { handle->cfg.ldb_credit_pool_id = 0; handle->cfg.num_ldb_credits = 0; return 0; } cfg.response = (uintptr_t)&response; cfg.num_ldb_credits = handle->cfg.resources.num_ldb_credits; ret = dlb_iface_ldb_credit_pool_create(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: ldb_credit_pool_create ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); } handle->cfg.ldb_credit_pool_id = response.id; handle->cfg.num_ldb_credits = cfg.num_ldb_credits; return ret; } static int dlb_dir_credit_pool_create(struct dlb_hw_dev *handle) { struct dlb_create_dir_pool_args cfg; struct dlb_cmd_response response; int ret; if (handle == NULL) return -EINVAL; if (!handle->cfg.resources.num_dir_credits) { handle->cfg.dir_credit_pool_id = 0; handle->cfg.num_dir_credits = 0; return 0; } cfg.response = (uintptr_t)&response; cfg.num_dir_credits = handle->cfg.resources.num_dir_credits; ret = dlb_iface_dir_credit_pool_create(handle, &cfg); if (ret < 0) DLB_LOG_ERR("dlb: dir_credit_pool_create ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); handle->cfg.dir_credit_pool_id = response.id; handle->cfg.num_dir_credits = cfg.num_dir_credits; return ret; } static int dlb_hw_create_sched_domain(struct dlb_hw_dev *handle, struct dlb_eventdev *dlb, const struct dlb_hw_rsrcs *resources_asked) { int ret = 0; struct dlb_create_sched_domain_args *config_params; struct dlb_cmd_response response; if (resources_asked == NULL) { DLB_LOG_ERR("dlb: dlb_create NULL parameter\n"); ret = EINVAL; goto error_exit; } /* Map generic qm resources to dlb resources */ config_params = &handle->cfg.resources; config_params->response = (uintptr_t)&response; /* DIR ports and queues */ config_params->num_dir_ports = resources_asked->num_dir_ports; config_params->num_dir_credits = resources_asked->num_dir_credits; /* LDB ports and queues */ config_params->num_ldb_queues = resources_asked->num_ldb_queues; config_params->num_ldb_ports = resources_asked->num_ldb_ports; config_params->num_ldb_credits = resources_asked->num_ldb_credits; config_params->num_atomic_inflights = dlb->num_atm_inflights_per_queue * config_params->num_ldb_queues; config_params->num_hist_list_entries = config_params->num_ldb_ports * DLB_NUM_HIST_LIST_ENTRIES_PER_LDB_PORT; /* dlb limited to 1 credit pool per queue type */ config_params->num_ldb_credit_pools = 1; config_params->num_dir_credit_pools = 1; DLB_LOG_DBG("sched domain create - ldb_qs=%d, ldb_ports=%d, dir_ports=%d, atomic_inflights=%d, hist_list_entries=%d, ldb_credits=%d, dir_credits=%d, ldb_cred_pools=%d, dir-credit_pools=%d\n", config_params->num_ldb_queues, config_params->num_ldb_ports, config_params->num_dir_ports, config_params->num_atomic_inflights, config_params->num_hist_list_entries, config_params->num_ldb_credits, config_params->num_dir_credits, config_params->num_ldb_credit_pools, config_params->num_dir_credit_pools); /* Configure the QM */ ret = dlb_iface_sched_domain_create(handle, config_params); if (ret < 0) { DLB_LOG_ERR("dlb: domain create failed, device_id = %d, (driver ret = %d, extra status: %s)\n", handle->device_id, ret, dlb_error_strings[response.status]); goto error_exit; } handle->domain_id = response.id; handle->domain_id_valid = 1; config_params->response = 0; ret = dlb_ldb_credit_pool_create(handle); if (ret < 0) { DLB_LOG_ERR("dlb: create ldb credit pool failed\n"); goto error_exit2; } ret = dlb_dir_credit_pool_create(handle); if (ret < 0) { DLB_LOG_ERR("dlb: create dir credit pool failed\n"); goto error_exit2; } handle->cfg.configured = true; return 0; error_exit2: dlb_iface_domain_close(dlb); error_exit: return ret; } /* End HW specific */ static void dlb_eventdev_info_get(struct rte_eventdev *dev, struct rte_event_dev_info *dev_info) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); int ret; ret = dlb_hw_query_resources(dlb); if (ret) { const struct rte_eventdev_data *data = dev->data; DLB_LOG_ERR("get resources err=%d, devid=%d\n", ret, data->dev_id); /* fn is void, so fall through and return values set up in * probe */ } /* Add num resources currently owned by this domain. * These would become available if the scheduling domain were reset due * to the application recalling eventdev_configure to *reconfigure* the * domain. */ evdev_dlb_default_info.max_event_ports += dlb->num_ldb_ports; evdev_dlb_default_info.max_event_queues += dlb->num_ldb_queues; evdev_dlb_default_info.max_num_events += dlb->num_ldb_credits; /* In DLB A-stepping hardware, applications are limited to 128 * configured ports (load-balanced or directed). The reported number of * available ports must reflect this. */ if (dlb->revision < DLB_REV_B0) { int used_ports; used_ports = DLB_MAX_NUM_LDB_PORTS + DLB_MAX_NUM_DIR_PORTS - dlb->hw_rsrc_query_results.num_ldb_ports - dlb->hw_rsrc_query_results.num_dir_ports; evdev_dlb_default_info.max_event_ports = RTE_MIN(evdev_dlb_default_info.max_event_ports, 128 - used_ports); } evdev_dlb_default_info.max_event_queues = RTE_MIN(evdev_dlb_default_info.max_event_queues, RTE_EVENT_MAX_QUEUES_PER_DEV); evdev_dlb_default_info.max_num_events = RTE_MIN(evdev_dlb_default_info.max_num_events, dlb->max_num_events_override); *dev_info = evdev_dlb_default_info; } /* Note: 1 QM instance per QM device, QM instance/device == event device */ static int dlb_eventdev_configure(const struct rte_eventdev *dev) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_hw_rsrcs *rsrcs = &handle->info.hw_rsrc_max; const struct rte_eventdev_data *data = dev->data; const struct rte_event_dev_config *config = &data->dev_conf; int ret; /* If this eventdev is already configured, we must release the current * scheduling domain before attempting to configure a new one. */ if (dlb->configured) { dlb_hw_reset_sched_domain(dev, true); ret = dlb_hw_query_resources(dlb); if (ret) { DLB_LOG_ERR("get resources err=%d, devid=%d\n", ret, data->dev_id); return ret; } } if (config->nb_event_queues > rsrcs->num_queues) { DLB_LOG_ERR("nb_event_queues parameter (%d) exceeds the QM device's capabilities (%d).\n", config->nb_event_queues, rsrcs->num_queues); return -EINVAL; } if (config->nb_event_ports > (rsrcs->num_ldb_ports + rsrcs->num_dir_ports)) { DLB_LOG_ERR("nb_event_ports parameter (%d) exceeds the QM device's capabilities (%d).\n", config->nb_event_ports, (rsrcs->num_ldb_ports + rsrcs->num_dir_ports)); return -EINVAL; } if (config->nb_events_limit > rsrcs->nb_events_limit) { DLB_LOG_ERR("nb_events_limit parameter (%d) exceeds the QM device's capabilities (%d).\n", config->nb_events_limit, rsrcs->nb_events_limit); return -EINVAL; } if (config->event_dev_cfg & RTE_EVENT_DEV_CFG_PER_DEQUEUE_TIMEOUT) dlb->global_dequeue_wait = false; else { uint32_t timeout32; dlb->global_dequeue_wait = true; timeout32 = config->dequeue_timeout_ns; dlb->global_dequeue_wait_ticks = timeout32 * (rte_get_timer_hz() / 1E9); } /* Does this platform support umonitor/umwait? */ if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_WAITPKG)) { if (RTE_LIBRTE_PMD_DLB_UMWAIT_CTL_STATE != 0 && RTE_LIBRTE_PMD_DLB_UMWAIT_CTL_STATE != 1) { DLB_LOG_ERR("invalid value (%d) for RTE_LIBRTE_PMD_DLB_UMWAIT_CTL_STATE must be 0 or 1.\n", RTE_LIBRTE_PMD_DLB_UMWAIT_CTL_STATE); return -EINVAL; } dlb->umwait_allowed = true; } rsrcs->num_dir_ports = config->nb_single_link_event_port_queues; rsrcs->num_ldb_ports = config->nb_event_ports - rsrcs->num_dir_ports; /* 1 dir queue per dir port */ rsrcs->num_ldb_queues = config->nb_event_queues - rsrcs->num_dir_ports; /* Scale down nb_events_limit by 4 for directed credits, since there * are 4x as many load-balanced credits. */ rsrcs->num_ldb_credits = 0; rsrcs->num_dir_credits = 0; if (rsrcs->num_ldb_queues) rsrcs->num_ldb_credits = config->nb_events_limit; if (rsrcs->num_dir_ports) rsrcs->num_dir_credits = config->nb_events_limit / 4; if (dlb->num_dir_credits_override != -1) rsrcs->num_dir_credits = dlb->num_dir_credits_override; if (dlb_hw_create_sched_domain(handle, dlb, rsrcs) < 0) { DLB_LOG_ERR("dlb_hw_create_sched_domain failed\n"); return -ENODEV; } dlb->new_event_limit = config->nb_events_limit; __atomic_store_n(&dlb->inflights, 0, __ATOMIC_SEQ_CST); /* Save number of ports/queues for this event dev */ dlb->num_ports = config->nb_event_ports; dlb->num_queues = config->nb_event_queues; dlb->num_dir_ports = rsrcs->num_dir_ports; dlb->num_ldb_ports = dlb->num_ports - dlb->num_dir_ports; dlb->num_ldb_queues = dlb->num_queues - dlb->num_dir_ports; dlb->num_dir_queues = dlb->num_dir_ports; dlb->num_ldb_credits = rsrcs->num_ldb_credits; dlb->num_dir_credits = rsrcs->num_dir_credits; dlb->configured = true; return 0; } static int16_t dlb_hw_unmap_ldb_qid_from_port(struct dlb_hw_dev *handle, uint32_t qm_port_id, uint16_t qm_qid) { struct dlb_unmap_qid_args cfg; struct dlb_cmd_response response; int32_t ret; if (handle == NULL) return -EINVAL; cfg.response = (uintptr_t)&response; cfg.port_id = qm_port_id; cfg.qid = qm_qid; ret = dlb_iface_unmap_qid(handle, &cfg); if (ret < 0) DLB_LOG_ERR("dlb: unmap qid error, ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); return ret; } static int dlb_event_queue_detach_ldb(struct dlb_eventdev *dlb, struct dlb_eventdev_port *ev_port, struct dlb_eventdev_queue *ev_queue) { int ret, i; /* Don't unlink until start time. */ if (dlb->run_state == DLB_RUN_STATE_STOPPED) return 0; for (i = 0; i < DLB_MAX_NUM_QIDS_PER_LDB_CQ; i++) { if (ev_port->link[i].valid && ev_port->link[i].queue_id == ev_queue->id) break; /* found */ } /* This is expected with eventdev API! * It blindly attempts to unmap all queues. */ if (i == DLB_MAX_NUM_QIDS_PER_LDB_CQ) { DLB_LOG_DBG("dlb: ignoring LB QID %d not mapped for qm_port %d.\n", ev_queue->qm_queue.id, ev_port->qm_port.id); return 0; } ret = dlb_hw_unmap_ldb_qid_from_port(&dlb->qm_instance, ev_port->qm_port.id, ev_queue->qm_queue.id); if (!ret) ev_port->link[i].mapped = false; return ret; } static int dlb_eventdev_port_unlink(struct rte_eventdev *dev, void *event_port, uint8_t queues[], uint16_t nb_unlinks) { struct dlb_eventdev_port *ev_port = event_port; struct dlb_eventdev *dlb; int i; RTE_SET_USED(dev); if (!ev_port->setup_done) { DLB_LOG_ERR("dlb: evport %d is not configured\n", ev_port->id); rte_errno = -EINVAL; return 0; } if (queues == NULL || nb_unlinks == 0) { DLB_LOG_DBG("dlb: queues is NULL or nb_unlinks is 0\n"); return 0; /* Ignore and return success */ } if (ev_port->qm_port.is_directed) { DLB_LOG_DBG("dlb: ignore unlink from dir port %d\n", ev_port->id); rte_errno = 0; return nb_unlinks; /* as if success */ } dlb = ev_port->dlb; for (i = 0; i < nb_unlinks; i++) { struct dlb_eventdev_queue *ev_queue; int ret, j; if (queues[i] >= dlb->num_queues) { DLB_LOG_ERR("dlb: invalid queue id %d\n", queues[i]); rte_errno = -EINVAL; return i; /* return index of offending queue */ } ev_queue = &dlb->ev_queues[queues[i]]; /* Does a link exist? */ for (j = 0; j < DLB_MAX_NUM_QIDS_PER_LDB_CQ; j++) if (ev_port->link[j].queue_id == queues[i] && ev_port->link[j].valid) break; if (j == DLB_MAX_NUM_QIDS_PER_LDB_CQ) continue; ret = dlb_event_queue_detach_ldb(dlb, ev_port, ev_queue); if (ret) { DLB_LOG_ERR("unlink err=%d for port %d queue %d\n", ret, ev_port->id, queues[i]); rte_errno = -ENOENT; return i; /* return index of offending queue */ } ev_port->link[j].valid = false; ev_port->num_links--; ev_queue->num_links--; } return nb_unlinks; } static int dlb_eventdev_port_unlinks_in_progress(struct rte_eventdev *dev, void *event_port) { struct dlb_eventdev_port *ev_port = event_port; struct dlb_eventdev *dlb; struct dlb_hw_dev *handle; struct dlb_pending_port_unmaps_args cfg; struct dlb_cmd_response response; int ret; RTE_SET_USED(dev); if (!ev_port->setup_done) { DLB_LOG_ERR("dlb: evport %d is not configured\n", ev_port->id); rte_errno = -EINVAL; return 0; } cfg.port_id = ev_port->qm_port.id; cfg.response = (uintptr_t)&response; dlb = ev_port->dlb; handle = &dlb->qm_instance; ret = dlb_iface_pending_port_unmaps(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: num_unlinks_in_progress ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); return ret; } return response.id; } static void dlb_eventdev_port_default_conf_get(struct rte_eventdev *dev, uint8_t port_id, struct rte_event_port_conf *port_conf) { RTE_SET_USED(port_id); struct dlb_eventdev *dlb = dlb_pmd_priv(dev); port_conf->new_event_threshold = dlb->new_event_limit; port_conf->dequeue_depth = 32; port_conf->enqueue_depth = DLB_MAX_ENQUEUE_DEPTH; port_conf->event_port_cfg = 0; } static void dlb_eventdev_queue_default_conf_get(struct rte_eventdev *dev, uint8_t queue_id, struct rte_event_queue_conf *queue_conf) { RTE_SET_USED(dev); RTE_SET_USED(queue_id); queue_conf->nb_atomic_flows = 1024; queue_conf->nb_atomic_order_sequences = 32; queue_conf->event_queue_cfg = 0; queue_conf->priority = 0; } static int dlb_hw_create_ldb_port(struct dlb_eventdev *dlb, struct dlb_eventdev_port *ev_port, uint32_t dequeue_depth, uint32_t cq_depth, uint32_t enqueue_depth, uint16_t rsvd_tokens, bool use_rsvd_token_scheme) { struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_create_ldb_port_args cfg = {0}; struct dlb_cmd_response response = {0}; int ret; struct dlb_port *qm_port = NULL; char mz_name[RTE_MEMZONE_NAMESIZE]; uint32_t qm_port_id; if (handle == NULL) return -EINVAL; if (cq_depth < DLB_MIN_LDB_CQ_DEPTH) { DLB_LOG_ERR("dlb: invalid cq_depth, must be %d-%d\n", DLB_MIN_LDB_CQ_DEPTH, DLB_MAX_INPUT_QUEUE_DEPTH); return -EINVAL; } if (enqueue_depth < DLB_MIN_ENQUEUE_DEPTH) { DLB_LOG_ERR("dlb: invalid enqueue_depth, must be at least %d\n", DLB_MIN_ENQUEUE_DEPTH); return -EINVAL; } rte_spinlock_lock(&handle->resource_lock); cfg.response = (uintptr_t)&response; /* We round up to the next power of 2 if necessary */ cfg.cq_depth = rte_align32pow2(cq_depth); cfg.cq_depth_threshold = rsvd_tokens; cfg.cq_history_list_size = DLB_NUM_HIST_LIST_ENTRIES_PER_LDB_PORT; /* User controls the LDB high watermark via enqueue depth. The DIR high * watermark is equal, unless the directed credit pool is too small. */ cfg.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. */ cfg.dir_credit_high_watermark = RTE_MIN(enqueue_depth, handle->cfg.num_dir_credits / dlb->num_ports); cfg.ldb_credit_quantum = cfg.ldb_credit_high_watermark / 2; cfg.ldb_credit_low_watermark = RTE_MIN(16, cfg.ldb_credit_quantum); cfg.dir_credit_quantum = cfg.dir_credit_high_watermark / 2; cfg.dir_credit_low_watermark = RTE_MIN(16, cfg.dir_credit_quantum); /* Per QM values */ cfg.ldb_credit_pool_id = handle->cfg.ldb_credit_pool_id; cfg.dir_credit_pool_id = handle->cfg.dir_credit_pool_id; ret = dlb_iface_ldb_port_create(handle, &cfg, dlb->poll_mode); if (ret < 0) { DLB_LOG_ERR("dlb: dlb_ldb_port_create error, ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); goto error_exit; } qm_port_id = response.id; DLB_LOG_DBG("dlb: 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->dlb = dlb; /* 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), "ldb_port%d", ev_port->id); ret = dlb_init_qe_mem(qm_port, mz_name); if (ret < 0) { DLB_LOG_ERR("dlb: init_qe_mem failed, ret=%d\n", ret); goto error_exit; } qm_port->pp_mmio_base = DLB_LDB_PP_BASE + PAGE_SIZE * qm_port_id; qm_port->id = qm_port_id; /* The credit window is one high water mark of QEs */ qm_port->ldb_pushcount_at_credit_expiry = 0; qm_port->cached_ldb_credits = cfg.ldb_credit_high_watermark; /* The credit window is one high water mark of QEs */ qm_port->dir_pushcount_at_credit_expiry = 0; qm_port->cached_dir_credits = cfg.dir_credit_high_watermark; /* 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 (dlb->poll_mode == DLB_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->use_rsvd_token_scheme = use_rsvd_token_scheme; qm_port->cq_rsvd_token_deficit = rsvd_tokens; qm_port->int_armed = false; /* Save off for later use in info and lookup APIs. */ qm_port->qid_mappings = &dlb->qm_ldb_to_ev_queue_id[0]; qm_port->dequeue_depth = dequeue_depth; /* When using the reserved token scheme, token_pop_thresh is * initially 2 * dequeue_depth. Once the tokens are reserved, * the enqueue code re-assigns it to dequeue_depth. */ qm_port->token_pop_thresh = cq_depth; /* When the deferred scheduling vdev arg is selected, use deferred pop * for all single-entry CQs. */ if (cfg.cq_depth == 1 || (cfg.cq_depth == 2 && use_rsvd_token_scheme)) { if (dlb->defer_sched) qm_port->token_pop_mode = DEFERRED_POP; } /* The default enqueue functions do not include delayed-pop support for * performance reasons. */ if (qm_port->token_pop_mode == DELAYED_POP) { dlb->event_dev->enqueue = dlb_event_enqueue_delayed; dlb->event_dev->enqueue_burst = dlb_event_enqueue_burst_delayed; dlb->event_dev->enqueue_new_burst = dlb_event_enqueue_new_burst_delayed; dlb->event_dev->enqueue_forward_burst = dlb_event_enqueue_forward_burst_delayed; } qm_port->owed_tokens = 0; qm_port->issued_releases = 0; /* update state */ qm_port->state = PORT_STARTED; /* enabled at create time */ qm_port->config_state = DLB_CONFIGURED; qm_port->dir_credits = cfg.dir_credit_high_watermark; qm_port->ldb_credits = cfg.ldb_credit_high_watermark; DLB_LOG_DBG("dlb: created ldb port %d, depth = %d, ldb credits=%d, dir credits=%d\n", qm_port_id, cq_depth, qm_port->ldb_credits, qm_port->dir_credits); rte_spinlock_unlock(&handle->resource_lock); return 0; error_exit: if (qm_port) { dlb_free_qe_mem(qm_port); qm_port->pp_mmio_base = 0; } rte_spinlock_unlock(&handle->resource_lock); DLB_LOG_ERR("dlb: create ldb port failed!\n"); return ret; } static int dlb_hw_create_dir_port(struct dlb_eventdev *dlb, struct dlb_eventdev_port *ev_port, uint32_t dequeue_depth, uint32_t cq_depth, uint32_t enqueue_depth, uint16_t rsvd_tokens, bool use_rsvd_token_scheme) { struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_create_dir_port_args cfg = {0}; struct dlb_cmd_response response = {0}; int ret; struct dlb_port *qm_port = NULL; char mz_name[RTE_MEMZONE_NAMESIZE]; uint32_t qm_port_id; if (dlb == NULL || handle == NULL) return -EINVAL; if (cq_depth < DLB_MIN_DIR_CQ_DEPTH) { DLB_LOG_ERR("dlb: invalid cq_depth, must be at least %d\n", DLB_MIN_DIR_CQ_DEPTH); return -EINVAL; } if (enqueue_depth < DLB_MIN_ENQUEUE_DEPTH) { DLB_LOG_ERR("dlb: invalid enqueue_depth, must be at least %d\n", DLB_MIN_ENQUEUE_DEPTH); return -EINVAL; } rte_spinlock_lock(&handle->resource_lock); /* Directed queues are configured at link time. */ cfg.queue_id = -1; cfg.response = (uintptr_t)&response; /* We round up to the next power of 2 if necessary */ cfg.cq_depth = rte_align32pow2(cq_depth); cfg.cq_depth_threshold = rsvd_tokens; /* User controls the LDB high watermark via enqueue depth. The DIR high * watermark is equal, unless the directed credit pool is too small. */ cfg.ldb_credit_high_watermark = enqueue_depth; /* Don't use enqueue_depth if it would require more directed credits * than are available. */ cfg.dir_credit_high_watermark = RTE_MIN(enqueue_depth, handle->cfg.num_dir_credits / dlb->num_ports); cfg.ldb_credit_quantum = cfg.ldb_credit_high_watermark / 2; cfg.ldb_credit_low_watermark = RTE_MIN(16, cfg.ldb_credit_quantum); cfg.dir_credit_quantum = cfg.dir_credit_high_watermark / 2; cfg.dir_credit_low_watermark = RTE_MIN(16, cfg.dir_credit_quantum); /* Per QM values */ cfg.ldb_credit_pool_id = handle->cfg.ldb_credit_pool_id; cfg.dir_credit_pool_id = handle->cfg.dir_credit_pool_id; ret = dlb_iface_dir_port_create(handle, &cfg, dlb->poll_mode); if (ret < 0) { DLB_LOG_ERR("dlb: dlb_dir_port_create error, ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); goto error_exit; } qm_port_id = response.id; DLB_LOG_DBG("dlb: 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->dlb = dlb; /* back ptr */ /* * Init local qe struct(s). * Note: MOVDIR64 requires the enqueue QE to be aligned */ snprintf(mz_name, sizeof(mz_name), "dir_port%d", ev_port->id); ret = dlb_init_qe_mem(qm_port, mz_name); if (ret < 0) { DLB_LOG_ERR("dlb: init_qe_mem failed, ret=%d\n", ret); goto error_exit; } qm_port->pp_mmio_base = DLB_DIR_PP_BASE + PAGE_SIZE * qm_port_id; qm_port->id = qm_port_id; /* The credit window is one high water mark of QEs */ qm_port->ldb_pushcount_at_credit_expiry = 0; qm_port->cached_ldb_credits = cfg.ldb_credit_high_watermark; /* The credit window is one high water mark of QEs */ qm_port->dir_pushcount_at_credit_expiry = 0; qm_port->cached_dir_credits = cfg.dir_credit_high_watermark; qm_port->cq_depth = cfg.cq_depth; qm_port->cq_idx = 0; qm_port->cq_idx_unmasked = 0; if (dlb->poll_mode == DLB_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->use_rsvd_token_scheme = use_rsvd_token_scheme; qm_port->cq_rsvd_token_deficit = rsvd_tokens; qm_port->int_armed = false; /* Save off for later use in info and lookup APIs. */ qm_port->qid_mappings = &dlb->qm_dir_to_ev_queue_id[0]; qm_port->dequeue_depth = dequeue_depth; /* Directed ports are auto-pop, by default. */ qm_port->token_pop_mode = AUTO_POP; qm_port->owed_tokens = 0; qm_port->issued_releases = 0; /* update state */ qm_port->state = PORT_STARTED; /* enabled at create time */ qm_port->config_state = DLB_CONFIGURED; qm_port->dir_credits = cfg.dir_credit_high_watermark; qm_port->ldb_credits = cfg.ldb_credit_high_watermark; DLB_LOG_DBG("dlb: created dir port %d, depth = %d cr=%d,%d\n", qm_port_id, cq_depth, cfg.dir_credit_high_watermark, cfg.ldb_credit_high_watermark); rte_spinlock_unlock(&handle->resource_lock); return 0; error_exit: if (qm_port) { qm_port->pp_mmio_base = 0; dlb_free_qe_mem(qm_port); } rte_spinlock_unlock(&handle->resource_lock); DLB_LOG_ERR("dlb: create dir port failed!\n"); return ret; } static int32_t dlb_hw_create_ldb_queue(struct dlb_eventdev *dlb, struct dlb_queue *queue, const struct rte_event_queue_conf *evq_conf) { struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_create_ldb_queue_args cfg; struct dlb_cmd_response response; int32_t ret; uint32_t qm_qid; int sched_type = -1; if (evq_conf == NULL) return -EINVAL; if (evq_conf->event_queue_cfg & RTE_EVENT_QUEUE_CFG_ALL_TYPES) { if (evq_conf->nb_atomic_order_sequences != 0) sched_type = RTE_SCHED_TYPE_ORDERED; else sched_type = RTE_SCHED_TYPE_PARALLEL; } else sched_type = evq_conf->schedule_type; cfg.response = (uintptr_t)&response; cfg.num_atomic_inflights = dlb->num_atm_inflights_per_queue; cfg.num_sequence_numbers = evq_conf->nb_atomic_order_sequences; cfg.num_qid_inflights = evq_conf->nb_atomic_order_sequences; if (sched_type != RTE_SCHED_TYPE_ORDERED) { cfg.num_sequence_numbers = 0; cfg.num_qid_inflights = DLB_DEF_UNORDERED_QID_INFLIGHTS; } ret = dlb_iface_ldb_queue_create(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: create LB event queue error, ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); return -EINVAL; } qm_qid = response.id; /* Save off queue config for debug, resource lookups, and reconfig */ queue->num_qid_inflights = cfg.num_qid_inflights; queue->num_atm_inflights = cfg.num_atomic_inflights; queue->sched_type = sched_type; queue->config_state = DLB_CONFIGURED; DLB_LOG_DBG("Created LB event queue %d, nb_inflights=%d, nb_seq=%d, qid inflights=%d\n", qm_qid, cfg.num_atomic_inflights, cfg.num_sequence_numbers, cfg.num_qid_inflights); return qm_qid; } static int32_t dlb_get_sn_allocation(struct dlb_eventdev *dlb, int group) { struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_get_sn_allocation_args cfg; struct dlb_cmd_response response; int ret; cfg.group = group; cfg.response = (uintptr_t)&response; ret = dlb_iface_get_sn_allocation(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: get_sn_allocation ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); return ret; } return response.id; } static int dlb_set_sn_allocation(struct dlb_eventdev *dlb, int group, int num) { struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_set_sn_allocation_args cfg; struct dlb_cmd_response response; int ret; cfg.num = num; cfg.group = group; cfg.response = (uintptr_t)&response; ret = dlb_iface_set_sn_allocation(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: set_sn_allocation ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); return ret; } return ret; } static int32_t dlb_get_sn_occupancy(struct dlb_eventdev *dlb, int group) { struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_get_sn_occupancy_args cfg; struct dlb_cmd_response response; int ret; cfg.group = group; cfg.response = (uintptr_t)&response; ret = dlb_iface_get_sn_occupancy(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: get_sn_occupancy ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); return ret; } return response.id; } /* Query the current sequence number allocations and, if they conflict with the * requested LDB queue configuration, attempt to re-allocate sequence numbers. * This is best-effort; if it fails, the PMD will attempt to configure the * load-balanced queue and return an error. */ static void dlb_program_sn_allocation(struct dlb_eventdev *dlb, const struct rte_event_queue_conf *queue_conf) { int grp_occupancy[DLB_NUM_SN_GROUPS]; int grp_alloc[DLB_NUM_SN_GROUPS]; int i, sequence_numbers; sequence_numbers = (int)queue_conf->nb_atomic_order_sequences; for (i = 0; i < DLB_NUM_SN_GROUPS; i++) { int total_slots; grp_alloc[i] = dlb_get_sn_allocation(dlb, i); if (grp_alloc[i] < 0) return; total_slots = DLB_MAX_LDB_SN_ALLOC / grp_alloc[i]; grp_occupancy[i] = dlb_get_sn_occupancy(dlb, i); if (grp_occupancy[i] < 0) return; /* DLB has at least one available slot for the requested * sequence numbers, so no further configuration required. */ if (grp_alloc[i] == sequence_numbers && grp_occupancy[i] < total_slots) return; } /* None of the sequence number groups are configured for the requested * sequence numbers, so we have to reconfigure one of them. This is * only possible if a group is not in use. */ for (i = 0; i < DLB_NUM_SN_GROUPS; i++) { if (grp_occupancy[i] == 0) break; } if (i == DLB_NUM_SN_GROUPS) { DLB_LOG_ERR("[%s()] No groups with %d sequence_numbers are available or have free slots\n", __func__, sequence_numbers); return; } /* Attempt to configure slot i with the requested number of sequence * numbers. Ignore the return value -- if this fails, the error will be * caught during subsequent queue configuration. */ dlb_set_sn_allocation(dlb, i, sequence_numbers); } static int dlb_eventdev_ldb_queue_setup(struct rte_eventdev *dev, struct dlb_eventdev_queue *ev_queue, const struct rte_event_queue_conf *queue_conf) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); int32_t qm_qid; if (queue_conf->nb_atomic_order_sequences) dlb_program_sn_allocation(dlb, queue_conf); qm_qid = dlb_hw_create_ldb_queue(dlb, &ev_queue->qm_queue, queue_conf); if (qm_qid < 0) { DLB_LOG_ERR("Failed to create the load-balanced queue\n"); return qm_qid; } dlb->qm_ldb_to_ev_queue_id[qm_qid] = ev_queue->id; ev_queue->qm_queue.id = qm_qid; return 0; } static int dlb_num_dir_queues_setup(struct dlb_eventdev *dlb) { int i, num = 0; for (i = 0; i < dlb->num_queues; i++) { if (dlb->ev_queues[i].setup_done && dlb->ev_queues[i].qm_queue.is_directed) num++; } return num; } static void dlb_queue_link_teardown(struct dlb_eventdev *dlb, struct dlb_eventdev_queue *ev_queue) { struct dlb_eventdev_port *ev_port; int i, j; for (i = 0; i < dlb->num_ports; i++) { ev_port = &dlb->ev_ports[i]; for (j = 0; j < DLB_MAX_NUM_QIDS_PER_LDB_CQ; j++) { if (!ev_port->link[j].valid || ev_port->link[j].queue_id != ev_queue->id) continue; ev_port->link[j].valid = false; ev_port->num_links--; } } ev_queue->num_links = 0; } static int dlb_eventdev_queue_setup(struct rte_eventdev *dev, uint8_t ev_qid, const struct rte_event_queue_conf *queue_conf) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); struct dlb_eventdev_queue *ev_queue; int ret; if (queue_conf == NULL) return -EINVAL; if (ev_qid >= dlb->num_queues) return -EINVAL; ev_queue = &dlb->ev_queues[ev_qid]; ev_queue->qm_queue.is_directed = queue_conf->event_queue_cfg & RTE_EVENT_QUEUE_CFG_SINGLE_LINK; ev_queue->id = ev_qid; ev_queue->conf = *queue_conf; if (!ev_queue->qm_queue.is_directed) { ret = dlb_eventdev_ldb_queue_setup(dev, ev_queue, queue_conf); } else { /* The directed queue isn't setup until link time, at which * point we know its directed port ID. Directed queue setup * will only fail if this queue is already setup or there are * no directed queues left to configure. */ ret = 0; ev_queue->qm_queue.config_state = DLB_NOT_CONFIGURED; if (ev_queue->setup_done || dlb_num_dir_queues_setup(dlb) == dlb->num_dir_queues) ret = -EINVAL; } /* Tear down pre-existing port->queue links */ if (!ret && dlb->run_state == DLB_RUN_STATE_STOPPED) dlb_queue_link_teardown(dlb, ev_queue); if (!ret) ev_queue->setup_done = true; return ret; } static void dlb_port_link_teardown(struct dlb_eventdev *dlb, struct dlb_eventdev_port *ev_port) { struct dlb_eventdev_queue *ev_queue; int i; for (i = 0; i < DLB_MAX_NUM_QIDS_PER_LDB_CQ; i++) { if (!ev_port->link[i].valid) continue; ev_queue = &dlb->ev_queues[ev_port->link[i].queue_id]; ev_port->link[i].valid = false; ev_port->num_links--; ev_queue->num_links--; } } static int dlb_eventdev_port_setup(struct rte_eventdev *dev, uint8_t ev_port_id, const struct rte_event_port_conf *port_conf) { struct dlb_eventdev *dlb; struct dlb_eventdev_port *ev_port; bool use_rsvd_token_scheme; uint32_t adj_cq_depth; uint16_t rsvd_tokens; int ret; if (dev == NULL || port_conf == NULL) { DLB_LOG_ERR("Null parameter\n"); return -EINVAL; } dlb = dlb_pmd_priv(dev); if (ev_port_id >= DLB_MAX_NUM_PORTS) return -EINVAL; if (port_conf->dequeue_depth > evdev_dlb_default_info.max_event_port_dequeue_depth || port_conf->enqueue_depth > evdev_dlb_default_info.max_event_port_enqueue_depth) return -EINVAL; ev_port = &dlb->ev_ports[ev_port_id]; /* configured? */ if (ev_port->setup_done) { DLB_LOG_ERR("evport %d is already configured\n", ev_port_id); return -EINVAL; } /* The reserved token interrupt arming scheme requires that one or more * CQ tokens be reserved by the PMD. This limits the amount of CQ space * usable by the DLB, so in order to give an *effective* CQ depth equal * to the user-requested value, we double CQ depth and reserve half of * its tokens. If the user requests the max CQ depth (256) then we * cannot double it, so we reserve one token and give an effective * depth of 255 entries. */ use_rsvd_token_scheme = true; rsvd_tokens = 1; adj_cq_depth = port_conf->dequeue_depth; if (use_rsvd_token_scheme && adj_cq_depth < 256) { rsvd_tokens = adj_cq_depth; adj_cq_depth *= 2; } 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 = dlb_hw_create_ldb_port(dlb, ev_port, port_conf->dequeue_depth, adj_cq_depth, port_conf->enqueue_depth, rsvd_tokens, use_rsvd_token_scheme); if (ret < 0) { DLB_LOG_ERR("Failed to create the lB port ve portId=%d\n", ev_port_id); return ret; } } else { ret = dlb_hw_create_dir_port(dlb, ev_port, port_conf->dequeue_depth, adj_cq_depth, port_conf->enqueue_depth, rsvd_tokens, use_rsvd_token_scheme); if (ret < 0) { DLB_LOG_ERR("Failed to create the DIR port\n"); return ret; } } /* Save off port config for reconfig */ dlb->ev_ports[ev_port_id].conf = *port_conf; dlb->ev_ports[ev_port_id].id = ev_port_id; dlb->ev_ports[ev_port_id].enq_configured = true; dlb->ev_ports[ev_port_id].setup_done = true; dlb->ev_ports[ev_port_id].inflight_max = port_conf->new_event_threshold; dlb->ev_ports[ev_port_id].implicit_release = !(port_conf->event_port_cfg & RTE_EVENT_PORT_CFG_DISABLE_IMPL_REL); dlb->ev_ports[ev_port_id].outstanding_releases = 0; dlb->ev_ports[ev_port_id].inflight_credits = 0; dlb->ev_ports[ev_port_id].credit_update_quanta = RTE_LIBRTE_PMD_DLB_SW_CREDIT_QUANTA; dlb->ev_ports[ev_port_id].dlb = dlb; /* reverse link */ /* Tear down pre-existing port->queue links */ if (dlb->run_state == DLB_RUN_STATE_STOPPED) dlb_port_link_teardown(dlb, &dlb->ev_ports[ev_port_id]); dev->data->ports[ev_port_id] = &dlb->ev_ports[ev_port_id]; return 0; } static int dlb_eventdev_reapply_configuration(struct rte_eventdev *dev) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); int ret, i; /* If an event queue or port was previously configured, but hasn't been * reconfigured, reapply its original configuration. */ for (i = 0; i < dlb->num_queues; i++) { struct dlb_eventdev_queue *ev_queue; ev_queue = &dlb->ev_queues[i]; if (ev_queue->qm_queue.config_state != DLB_PREV_CONFIGURED) continue; ret = dlb_eventdev_queue_setup(dev, i, &ev_queue->conf); if (ret < 0) { DLB_LOG_ERR("dlb: failed to reconfigure queue %d", i); return ret; } } for (i = 0; i < dlb->num_ports; i++) { struct dlb_eventdev_port *ev_port = &dlb->ev_ports[i]; if (ev_port->qm_port.config_state != DLB_PREV_CONFIGURED) continue; ret = dlb_eventdev_port_setup(dev, i, &ev_port->conf); if (ret < 0) { DLB_LOG_ERR("dlb: failed to reconfigure ev_port %d", i); return ret; } } return 0; } static int set_dev_id(const char *key __rte_unused, const char *value, void *opaque) { int *dev_id = opaque; int ret; if (value == NULL || opaque == NULL) { DLB_LOG_ERR("NULL pointer\n"); return -EINVAL; } ret = dlb_string_to_int(dev_id, value); if (ret < 0) return ret; return 0; } static int set_defer_sched(const char *key __rte_unused, const char *value, void *opaque) { int *defer_sched = opaque; if (value == NULL || opaque == NULL) { DLB_LOG_ERR("NULL pointer\n"); return -EINVAL; } if (strncmp(value, "on", 2) != 0) { DLB_LOG_ERR("Invalid defer_sched argument \"%s\" (expected \"on\")\n", value); return -EINVAL; } *defer_sched = 1; return 0; } static int set_num_atm_inflights(const char *key __rte_unused, const char *value, void *opaque) { int *num_atm_inflights = opaque; int ret; if (value == NULL || opaque == NULL) { DLB_LOG_ERR("NULL pointer\n"); return -EINVAL; } ret = dlb_string_to_int(num_atm_inflights, value); if (ret < 0) return ret; if (*num_atm_inflights < 0 || *num_atm_inflights > DLB_MAX_NUM_ATM_INFLIGHTS) { DLB_LOG_ERR("dlb: atm_inflights must be between 0 and %d\n", DLB_MAX_NUM_ATM_INFLIGHTS); return -EINVAL; } return 0; } static int dlb_validate_port_link(struct dlb_eventdev_port *ev_port, uint8_t queue_id, bool link_exists, int index) { struct dlb_eventdev *dlb = ev_port->dlb; struct dlb_eventdev_queue *ev_queue; bool port_is_dir, queue_is_dir; if (queue_id > dlb->num_queues) { DLB_LOG_ERR("queue_id %d > num queues %d\n", queue_id, dlb->num_queues); rte_errno = -EINVAL; return -1; } ev_queue = &dlb->ev_queues[queue_id]; if (!ev_queue->setup_done && ev_queue->qm_queue.config_state != DLB_PREV_CONFIGURED) { DLB_LOG_ERR("setup not done and not previously configured\n"); rte_errno = -EINVAL; return -1; } port_is_dir = ev_port->qm_port.is_directed; queue_is_dir = ev_queue->qm_queue.is_directed; if (port_is_dir != queue_is_dir) { DLB_LOG_ERR("%s queue %u can't link to %s port %u\n", queue_is_dir ? "DIR" : "LDB", ev_queue->id, port_is_dir ? "DIR" : "LDB", ev_port->id); rte_errno = -EINVAL; return -1; } /* Check if there is space for the requested link */ if (!link_exists && index == -1) { DLB_LOG_ERR("no space for new link\n"); rte_errno = -ENOSPC; return -1; } /* Check if the directed port is already linked */ if (ev_port->qm_port.is_directed && ev_port->num_links > 0 && !link_exists) { DLB_LOG_ERR("Can't link DIR port %d to >1 queues\n", ev_port->id); rte_errno = -EINVAL; return -1; } /* Check if the directed queue is already linked */ if (ev_queue->qm_queue.is_directed && ev_queue->num_links > 0 && !link_exists) { DLB_LOG_ERR("Can't link DIR queue %d to >1 ports\n", ev_queue->id); rte_errno = -EINVAL; return -1; } return 0; } static int32_t dlb_hw_create_dir_queue(struct dlb_eventdev *dlb, int32_t qm_port_id) { struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_create_dir_queue_args cfg; struct dlb_cmd_response response = {0}; int32_t ret; cfg.response = (uintptr_t)&response; /* The directed port is always configured before its queue */ cfg.port_id = qm_port_id; ret = dlb_iface_dir_queue_create(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: create DIR event queue error, ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); return -EINVAL; } return response.id; } static int dlb_eventdev_dir_queue_setup(struct dlb_eventdev *dlb, struct dlb_eventdev_queue *ev_queue, struct dlb_eventdev_port *ev_port) { int32_t qm_qid; qm_qid = dlb_hw_create_dir_queue(dlb, ev_port->qm_port.id); if (qm_qid < 0) { DLB_LOG_ERR("Failed to create the DIR queue\n"); return qm_qid; } dlb->qm_dir_to_ev_queue_id[qm_qid] = ev_queue->id; ev_queue->qm_queue.id = qm_qid; return 0; } static int16_t dlb_hw_map_ldb_qid_to_port(struct dlb_hw_dev *handle, uint32_t qm_port_id, uint16_t qm_qid, uint8_t priority) { struct dlb_map_qid_args cfg; struct dlb_cmd_response response; int32_t ret; if (handle == NULL) return -EINVAL; /* Build message */ cfg.response = (uintptr_t)&response; cfg.port_id = qm_port_id; cfg.qid = qm_qid; cfg.priority = EV_TO_DLB_PRIO(priority); ret = dlb_iface_map_qid(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: map qid error, ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); DLB_LOG_ERR("dlb: device_id=%d grp=%d, qm_port=%d, qm_qid=%d prio=%d\n", handle->device_id, handle->domain_id, cfg.port_id, cfg.qid, cfg.priority); } else { DLB_LOG_DBG("dlb: mapped queue %d to qm_port %d\n", qm_qid, qm_port_id); } return ret; } static int dlb_event_queue_join_ldb(struct dlb_eventdev *dlb, struct dlb_eventdev_port *ev_port, struct dlb_eventdev_queue *ev_queue, uint8_t priority) { int first_avail = -1; int ret, i; for (i = 0; i < DLB_MAX_NUM_QIDS_PER_LDB_CQ; i++) { if (ev_port->link[i].valid) { if (ev_port->link[i].queue_id == ev_queue->id && ev_port->link[i].priority == priority) { if (ev_port->link[i].mapped) return 0; /* already mapped */ first_avail = i; } } else { if (first_avail == -1) first_avail = i; } } if (first_avail == -1) { DLB_LOG_ERR("dlb: qm_port %d has no available QID slots.\n", ev_port->qm_port.id); return -EINVAL; } ret = dlb_hw_map_ldb_qid_to_port(&dlb->qm_instance, ev_port->qm_port.id, ev_queue->qm_queue.id, priority); if (!ret) ev_port->link[first_avail].mapped = true; return ret; } static int dlb_do_port_link(struct rte_eventdev *dev, struct dlb_eventdev_queue *ev_queue, struct dlb_eventdev_port *ev_port, uint8_t prio) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); int err; /* Don't link until start time. */ if (dlb->run_state == DLB_RUN_STATE_STOPPED) return 0; if (ev_queue->qm_queue.is_directed) err = dlb_eventdev_dir_queue_setup(dlb, ev_queue, ev_port); else err = dlb_event_queue_join_ldb(dlb, ev_port, ev_queue, prio); if (err) { DLB_LOG_ERR("port link failure for %s ev_q %d, ev_port %d\n", ev_queue->qm_queue.is_directed ? "DIR" : "LDB", ev_queue->id, ev_port->id); rte_errno = err; return -1; } return 0; } static int dlb_eventdev_apply_port_links(struct rte_eventdev *dev) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); int i; /* Perform requested port->queue links */ for (i = 0; i < dlb->num_ports; i++) { struct dlb_eventdev_port *ev_port = &dlb->ev_ports[i]; int j; for (j = 0; j < DLB_MAX_NUM_QIDS_PER_LDB_CQ; j++) { struct dlb_eventdev_queue *ev_queue; uint8_t prio, queue_id; if (!ev_port->link[j].valid) continue; prio = ev_port->link[j].priority; queue_id = ev_port->link[j].queue_id; if (dlb_validate_port_link(ev_port, queue_id, true, j)) return -EINVAL; ev_queue = &dlb->ev_queues[queue_id]; if (dlb_do_port_link(dev, ev_queue, ev_port, prio)) return -EINVAL; } } return 0; } static int dlb_eventdev_port_link(struct rte_eventdev *dev, void *event_port, const uint8_t queues[], const uint8_t priorities[], uint16_t nb_links) { struct dlb_eventdev_port *ev_port = event_port; struct dlb_eventdev *dlb; int i, j; RTE_SET_USED(dev); if (ev_port == NULL) { DLB_LOG_ERR("dlb: evport not setup\n"); rte_errno = -EINVAL; return 0; } if (!ev_port->setup_done && ev_port->qm_port.config_state != DLB_PREV_CONFIGURED) { DLB_LOG_ERR("dlb: evport not setup\n"); rte_errno = -EINVAL; return 0; } /* Note: rte_event_port_link() ensures the PMD won't receive a NULL * queues pointer. */ if (nb_links == 0) { DLB_LOG_DBG("dlb: nb_links is 0\n"); return 0; /* Ignore and return success */ } dlb = ev_port->dlb; DLB_LOG_DBG("Linking %u queues to %s port %d\n", nb_links, ev_port->qm_port.is_directed ? "DIR" : "LDB", ev_port->id); for (i = 0; i < nb_links; i++) { struct dlb_eventdev_queue *ev_queue; uint8_t queue_id, prio; bool found = false; int index = -1; queue_id = queues[i]; prio = priorities[i]; /* Check if the link already exists. */ for (j = 0; j < DLB_MAX_NUM_QIDS_PER_LDB_CQ; j++) if (ev_port->link[j].valid) { if (ev_port->link[j].queue_id == queue_id) { found = true; index = j; break; } } else { if (index == -1) index = j; } /* could not link */ if (index == -1) break; /* Check if already linked at the requested priority */ if (found && ev_port->link[j].priority == prio) continue; if (dlb_validate_port_link(ev_port, queue_id, found, index)) break; /* return index of offending queue */ ev_queue = &dlb->ev_queues[queue_id]; if (dlb_do_port_link(dev, ev_queue, ev_port, prio)) break; /* return index of offending queue */ ev_queue->num_links++; ev_port->link[index].queue_id = queue_id; ev_port->link[index].priority = prio; ev_port->link[index].valid = true; /* Entry already exists? If so, then must be prio change */ if (!found) ev_port->num_links++; } return i; } static int dlb_eventdev_start(struct rte_eventdev *dev) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_start_domain_args cfg; struct dlb_cmd_response response; int ret, i; rte_spinlock_lock(&dlb->qm_instance.resource_lock); if (dlb->run_state != DLB_RUN_STATE_STOPPED) { DLB_LOG_ERR("bad state %d for dev_start\n", (int)dlb->run_state); rte_spinlock_unlock(&dlb->qm_instance.resource_lock); return -EINVAL; } dlb->run_state = DLB_RUN_STATE_STARTING; rte_spinlock_unlock(&dlb->qm_instance.resource_lock); /* If the device was configured more than once, some event ports and/or * queues may need to be reconfigured. */ ret = dlb_eventdev_reapply_configuration(dev); if (ret) return ret; /* The DLB PMD delays port links until the device is started. */ ret = dlb_eventdev_apply_port_links(dev); if (ret) return ret; cfg.response = (uintptr_t)&response; for (i = 0; i < dlb->num_ports; i++) { if (!dlb->ev_ports[i].setup_done) { DLB_LOG_ERR("dlb: port %d not setup", i); return -ESTALE; } } for (i = 0; i < dlb->num_queues; i++) { if (dlb->ev_queues[i].num_links == 0) { DLB_LOG_ERR("dlb: queue %d is not linked", i); return -ENOLINK; } } ret = dlb_iface_sched_domain_start(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: sched_domain_start ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); return ret; } dlb->run_state = DLB_RUN_STATE_STARTED; DLB_LOG_DBG("dlb: sched_domain_start completed OK\n"); return 0; } static inline int dlb_check_enqueue_sw_credits(struct dlb_eventdev *dlb, struct dlb_eventdev_port *ev_port) { uint32_t sw_inflights = __atomic_load_n(&dlb->inflights, __ATOMIC_SEQ_CST); const int num = 1; if (unlikely(ev_port->inflight_max < sw_inflights)) { DLB_INC_STAT(ev_port->stats.traffic.tx_nospc_inflight_max, 1); rte_errno = -ENOSPC; return 1; } if (ev_port->inflight_credits < num) { /* check if event enqueue brings ev_port over max threshold */ uint32_t credit_update_quanta = ev_port->credit_update_quanta; if (sw_inflights + credit_update_quanta > dlb->new_event_limit) { DLB_INC_STAT( ev_port->stats.traffic.tx_nospc_new_event_limit, 1); rte_errno = -ENOSPC; return 1; } __atomic_fetch_add(&dlb->inflights, credit_update_quanta, __ATOMIC_SEQ_CST); ev_port->inflight_credits += (credit_update_quanta); if (ev_port->inflight_credits < num) { DLB_INC_STAT( ev_port->stats.traffic.tx_nospc_inflight_credits, 1); rte_errno = -ENOSPC; return 1; } } return 0; } static inline void dlb_replenish_sw_credits(struct dlb_eventdev *dlb, struct dlb_eventdev_port *ev_port) { uint16_t quanta = ev_port->credit_update_quanta; if (ev_port->inflight_credits >= quanta * 2) { /* Replenish credits, saving one quanta for enqueues */ uint16_t val = ev_port->inflight_credits - quanta; __atomic_fetch_sub(&dlb->inflights, val, __ATOMIC_SEQ_CST); ev_port->inflight_credits -= val; } } static __rte_always_inline uint16_t dlb_read_pc(struct process_local_port_data *port_data, bool ldb) { volatile uint16_t *popcount; if (ldb) popcount = port_data->ldb_popcount; else popcount = port_data->dir_popcount; return *popcount; } static inline int dlb_check_enqueue_hw_ldb_credits(struct dlb_port *qm_port, struct process_local_port_data *port_data) { if (unlikely(qm_port->cached_ldb_credits == 0)) { uint16_t pc; pc = dlb_read_pc(port_data, true); qm_port->cached_ldb_credits = pc - qm_port->ldb_pushcount_at_credit_expiry; if (unlikely(qm_port->cached_ldb_credits == 0)) { DLB_INC_STAT( qm_port->ev_port->stats.traffic.tx_nospc_ldb_hw_credits, 1); DLB_LOG_DBG("ldb credits exhausted\n"); return 1; } qm_port->ldb_pushcount_at_credit_expiry += qm_port->cached_ldb_credits; } return 0; } static inline int dlb_check_enqueue_hw_dir_credits(struct dlb_port *qm_port, struct process_local_port_data *port_data) { if (unlikely(qm_port->cached_dir_credits == 0)) { uint16_t pc; pc = dlb_read_pc(port_data, false); qm_port->cached_dir_credits = pc - qm_port->dir_pushcount_at_credit_expiry; if (unlikely(qm_port->cached_dir_credits == 0)) { DLB_INC_STAT( qm_port->ev_port->stats.traffic.tx_nospc_dir_hw_credits, 1); DLB_LOG_DBG("dir credits exhausted\n"); return 1; } qm_port->dir_pushcount_at_credit_expiry += qm_port->cached_dir_credits; } return 0; } static inline int dlb_event_enqueue_prep(struct dlb_eventdev_port *ev_port, struct dlb_port *qm_port, const struct rte_event ev[], struct process_local_port_data *port_data, uint8_t *sched_type, uint8_t *queue_id) { struct dlb_eventdev *dlb = ev_port->dlb; struct dlb_eventdev_queue *ev_queue; uint16_t *cached_credits = NULL; struct dlb_queue *qm_queue; ev_queue = &dlb->ev_queues[ev->queue_id]; qm_queue = &ev_queue->qm_queue; *queue_id = qm_queue->id; /* Ignore sched_type and hardware credits on release events */ if (ev->op == RTE_EVENT_OP_RELEASE) goto op_check; if (!qm_queue->is_directed) { /* Load balanced destination queue */ if (dlb_check_enqueue_hw_ldb_credits(qm_port, port_data)) { rte_errno = -ENOSPC; return 1; } cached_credits = &qm_port->cached_ldb_credits; switch (ev->sched_type) { case RTE_SCHED_TYPE_ORDERED: DLB_LOG_DBG("dlb: put_qe: RTE_SCHED_TYPE_ORDERED\n"); if (qm_queue->sched_type != RTE_SCHED_TYPE_ORDERED) { DLB_LOG_ERR("dlb: tried to send ordered event to unordered queue %d\n", *queue_id); rte_errno = -EINVAL; return 1; } *sched_type = DLB_SCHED_ORDERED; break; case RTE_SCHED_TYPE_ATOMIC: DLB_LOG_DBG("dlb: put_qe: RTE_SCHED_TYPE_ATOMIC\n"); *sched_type = DLB_SCHED_ATOMIC; break; case RTE_SCHED_TYPE_PARALLEL: DLB_LOG_DBG("dlb: put_qe: RTE_SCHED_TYPE_PARALLEL\n"); if (qm_queue->sched_type == RTE_SCHED_TYPE_ORDERED) *sched_type = DLB_SCHED_ORDERED; else *sched_type = DLB_SCHED_UNORDERED; break; default: DLB_LOG_ERR("Unsupported LDB sched type in put_qe\n"); DLB_INC_STAT(ev_port->stats.tx_invalid, 1); rte_errno = -EINVAL; return 1; } } else { /* Directed destination queue */ if (dlb_check_enqueue_hw_dir_credits(qm_port, port_data)) { rte_errno = -ENOSPC; return 1; } cached_credits = &qm_port->cached_dir_credits; DLB_LOG_DBG("dlb: put_qe: RTE_SCHED_TYPE_DIRECTED\n"); *sched_type = DLB_SCHED_DIRECTED; } op_check: switch (ev->op) { case RTE_EVENT_OP_NEW: /* Check that a sw credit is available */ if (dlb_check_enqueue_sw_credits(dlb, ev_port)) { rte_errno = -ENOSPC; return 1; } ev_port->inflight_credits--; (*cached_credits)--; break; case RTE_EVENT_OP_FORWARD: /* Check for outstanding_releases underflow. If this occurs, * the application is not using the EVENT_OPs correctly; for * example, forwarding or releasing events that were not * dequeued. */ RTE_ASSERT(ev_port->outstanding_releases > 0); ev_port->outstanding_releases--; qm_port->issued_releases++; (*cached_credits)--; break; case RTE_EVENT_OP_RELEASE: ev_port->inflight_credits++; /* Check for outstanding_releases underflow. If this occurs, * the application is not using the EVENT_OPs correctly; for * example, forwarding or releasing events that were not * dequeued. */ RTE_ASSERT(ev_port->outstanding_releases > 0); ev_port->outstanding_releases--; qm_port->issued_releases++; /* Replenish s/w credits if enough are cached */ dlb_replenish_sw_credits(dlb, ev_port); break; } DLB_INC_STAT(ev_port->stats.tx_op_cnt[ev->op], 1); DLB_INC_STAT(ev_port->stats.traffic.tx_ok, 1); #ifndef RTE_LIBRTE_PMD_DLB_QUELL_STATS if (ev->op != RTE_EVENT_OP_RELEASE) { DLB_INC_STAT(ev_port->stats.enq_ok[ev->queue_id], 1); DLB_INC_STAT(ev_port->stats.tx_sched_cnt[*sched_type], 1); } #endif return 0; } static uint8_t cmd_byte_map[NUM_DLB_PORT_TYPES][DLB_NUM_HW_SCHED_TYPES] = { { /* Load-balanced cmd bytes */ [RTE_EVENT_OP_NEW] = DLB_NEW_CMD_BYTE, [RTE_EVENT_OP_FORWARD] = DLB_FWD_CMD_BYTE, [RTE_EVENT_OP_RELEASE] = DLB_COMP_CMD_BYTE, }, { /* Directed cmd bytes */ [RTE_EVENT_OP_NEW] = DLB_NEW_CMD_BYTE, [RTE_EVENT_OP_FORWARD] = DLB_NEW_CMD_BYTE, [RTE_EVENT_OP_RELEASE] = DLB_NOOP_CMD_BYTE, }, }; static inline void dlb_event_build_hcws(struct dlb_port *qm_port, const struct rte_event ev[], int num, uint8_t *sched_type, uint8_t *queue_id) { struct dlb_enqueue_qe *qe; uint16_t sched_word[4]; __m128i sse_qe[2]; int i; qe = qm_port->qe4; sse_qe[0] = _mm_setzero_si128(); sse_qe[1] = _mm_setzero_si128(); switch (num) { case 4: /* Construct the metadata portion of two HCWs in one 128b SSE * register. HCW metadata is constructed in the SSE registers * like so: * sse_qe[0][63:0]: qe[0]'s metadata * sse_qe[0][127:64]: qe[1]'s metadata * sse_qe[1][63:0]: qe[2]'s metadata * sse_qe[1][127:64]: qe[3]'s metadata */ /* Convert the event operation into a command byte and store it * in the metadata: * sse_qe[0][63:56] = cmd_byte_map[is_directed][ev[0].op] * sse_qe[0][127:120] = cmd_byte_map[is_directed][ev[1].op] * sse_qe[1][63:56] = cmd_byte_map[is_directed][ev[2].op] * sse_qe[1][127:120] = cmd_byte_map[is_directed][ev[3].op] */ #define DLB_QE_CMD_BYTE 7 sse_qe[0] = _mm_insert_epi8(sse_qe[0], cmd_byte_map[qm_port->is_directed][ev[0].op], DLB_QE_CMD_BYTE); sse_qe[0] = _mm_insert_epi8(sse_qe[0], cmd_byte_map[qm_port->is_directed][ev[1].op], DLB_QE_CMD_BYTE + 8); sse_qe[1] = _mm_insert_epi8(sse_qe[1], cmd_byte_map[qm_port->is_directed][ev[2].op], DLB_QE_CMD_BYTE); sse_qe[1] = _mm_insert_epi8(sse_qe[1], cmd_byte_map[qm_port->is_directed][ev[3].op], DLB_QE_CMD_BYTE + 8); /* Store priority, scheduling type, and queue ID in the sched * word array because these values are re-used when the * destination is a directed queue. */ sched_word[0] = EV_TO_DLB_PRIO(ev[0].priority) << 10 | sched_type[0] << 8 | queue_id[0]; sched_word[1] = EV_TO_DLB_PRIO(ev[1].priority) << 10 | sched_type[1] << 8 | queue_id[1]; sched_word[2] = EV_TO_DLB_PRIO(ev[2].priority) << 10 | sched_type[2] << 8 | queue_id[2]; sched_word[3] = EV_TO_DLB_PRIO(ev[3].priority) << 10 | sched_type[3] << 8 | queue_id[3]; /* Store the event priority, scheduling type, and queue ID in * the metadata: * sse_qe[0][31:16] = sched_word[0] * sse_qe[0][95:80] = sched_word[1] * sse_qe[1][31:16] = sched_word[2] * sse_qe[1][95:80] = sched_word[3] */ #define DLB_QE_QID_SCHED_WORD 1 sse_qe[0] = _mm_insert_epi16(sse_qe[0], sched_word[0], DLB_QE_QID_SCHED_WORD); sse_qe[0] = _mm_insert_epi16(sse_qe[0], sched_word[1], DLB_QE_QID_SCHED_WORD + 4); sse_qe[1] = _mm_insert_epi16(sse_qe[1], sched_word[2], DLB_QE_QID_SCHED_WORD); sse_qe[1] = _mm_insert_epi16(sse_qe[1], sched_word[3], DLB_QE_QID_SCHED_WORD + 4); /* If the destination is a load-balanced queue, store the lock * ID. If it is a directed queue, DLB places this field in * bytes 10-11 of the received QE, so we format it accordingly: * sse_qe[0][47:32] = dir queue ? sched_word[0] : flow_id[0] * sse_qe[0][111:96] = dir queue ? sched_word[1] : flow_id[1] * sse_qe[1][47:32] = dir queue ? sched_word[2] : flow_id[2] * sse_qe[1][111:96] = dir queue ? sched_word[3] : flow_id[3] */ #define DLB_QE_LOCK_ID_WORD 2 sse_qe[0] = _mm_insert_epi16(sse_qe[0], (sched_type[0] == DLB_SCHED_DIRECTED) ? sched_word[0] : ev[0].flow_id, DLB_QE_LOCK_ID_WORD); sse_qe[0] = _mm_insert_epi16(sse_qe[0], (sched_type[1] == DLB_SCHED_DIRECTED) ? sched_word[1] : ev[1].flow_id, DLB_QE_LOCK_ID_WORD + 4); sse_qe[1] = _mm_insert_epi16(sse_qe[1], (sched_type[2] == DLB_SCHED_DIRECTED) ? sched_word[2] : ev[2].flow_id, DLB_QE_LOCK_ID_WORD); sse_qe[1] = _mm_insert_epi16(sse_qe[1], (sched_type[3] == DLB_SCHED_DIRECTED) ? sched_word[3] : ev[3].flow_id, DLB_QE_LOCK_ID_WORD + 4); /* Store the event type and sub event type in the metadata: * sse_qe[0][15:0] = flow_id[0] * sse_qe[0][79:64] = flow_id[1] * sse_qe[1][15:0] = flow_id[2] * sse_qe[1][79:64] = flow_id[3] */ #define DLB_QE_EV_TYPE_WORD 0 sse_qe[0] = _mm_insert_epi16(sse_qe[0], ev[0].sub_event_type << 8 | ev[0].event_type, DLB_QE_EV_TYPE_WORD); sse_qe[0] = _mm_insert_epi16(sse_qe[0], ev[1].sub_event_type << 8 | ev[1].event_type, DLB_QE_EV_TYPE_WORD + 4); sse_qe[1] = _mm_insert_epi16(sse_qe[1], ev[2].sub_event_type << 8 | ev[2].event_type, DLB_QE_EV_TYPE_WORD); sse_qe[1] = _mm_insert_epi16(sse_qe[1], ev[3].sub_event_type << 8 | ev[3].event_type, DLB_QE_EV_TYPE_WORD + 4); /* Store the metadata to memory (use the double-precision * _mm_storeh_pd because there is no integer function for * storing the upper 64b): * qe[0] metadata = sse_qe[0][63:0] * qe[1] metadata = sse_qe[0][127:64] * qe[2] metadata = sse_qe[1][63:0] * qe[3] metadata = sse_qe[1][127:64] */ _mm_storel_epi64((__m128i *)&qe[0].u.opaque_data, sse_qe[0]); _mm_storeh_pd((double *)&qe[1].u.opaque_data, (__m128d) sse_qe[0]); _mm_storel_epi64((__m128i *)&qe[2].u.opaque_data, sse_qe[1]); _mm_storeh_pd((double *)&qe[3].u.opaque_data, (__m128d) sse_qe[1]); qe[0].data = ev[0].u64; qe[1].data = ev[1].u64; qe[2].data = ev[2].u64; qe[3].data = ev[3].u64; break; case 3: case 2: case 1: for (i = 0; i < num; i++) { qe[i].cmd_byte = cmd_byte_map[qm_port->is_directed][ev[i].op]; qe[i].sched_type = sched_type[i]; qe[i].data = ev[i].u64; qe[i].qid = queue_id[i]; qe[i].priority = EV_TO_DLB_PRIO(ev[i].priority); qe[i].lock_id = ev[i].flow_id; if (sched_type[i] == DLB_SCHED_DIRECTED) { struct dlb_msg_info *info = (struct dlb_msg_info *)&qe[i].lock_id; info->qid = queue_id[i]; info->sched_type = DLB_SCHED_DIRECTED; info->priority = qe[i].priority; } qe[i].u.event_type.major = ev[i].event_type; qe[i].u.event_type.sub = ev[i].sub_event_type; } break; case 0: break; } } static inline void dlb_construct_token_pop_qe(struct dlb_port *qm_port, int idx) { struct dlb_cq_pop_qe *qe = (void *)qm_port->qe4; int num = qm_port->owed_tokens; if (qm_port->use_rsvd_token_scheme) { /* Check if there's a deficit of reserved tokens, and return * early if there are no (unreserved) tokens to consume. */ if (num <= qm_port->cq_rsvd_token_deficit) { qm_port->cq_rsvd_token_deficit -= num; qm_port->owed_tokens = 0; return; } num -= qm_port->cq_rsvd_token_deficit; qm_port->cq_rsvd_token_deficit = 0; } qe[idx].cmd_byte = DLB_POP_CMD_BYTE; qe[idx].tokens = num - 1; qm_port->owed_tokens = 0; } static __rte_always_inline void dlb_pp_write(struct dlb_enqueue_qe *qe4, struct process_local_port_data *port_data) { dlb_movdir64b(port_data->pp_addr, qe4); } static inline void dlb_hw_do_enqueue(struct dlb_port *qm_port, bool do_sfence, struct process_local_port_data *port_data) { DLB_LOG_DBG("dlb: Flushing QE(s) to DLB\n"); /* Since MOVDIR64B is weakly-ordered, use an SFENCE to ensure that * application writes complete before enqueueing the release HCW. */ if (do_sfence) rte_wmb(); dlb_pp_write(qm_port->qe4, port_data); } static inline int dlb_consume_qe_immediate(struct dlb_port *qm_port, int num) { struct process_local_port_data *port_data; struct dlb_cq_pop_qe *qe; RTE_ASSERT(qm_port->config_state == DLB_CONFIGURED); if (qm_port->use_rsvd_token_scheme) { /* Check if there's a deficit of reserved tokens, and return * early if there are no (unreserved) tokens to consume. */ if (num <= qm_port->cq_rsvd_token_deficit) { qm_port->cq_rsvd_token_deficit -= num; qm_port->owed_tokens = 0; return 0; } num -= qm_port->cq_rsvd_token_deficit; qm_port->cq_rsvd_token_deficit = 0; } qe = qm_port->consume_qe; qe->tokens = num - 1; qe->int_arm = 0; /* No store fence needed since no pointer is being sent, and CQ token * pops can be safely reordered with other HCWs. */ port_data = &dlb_port[qm_port->id][PORT_TYPE(qm_port)]; dlb_movntdq_single(port_data->pp_addr, qe); DLB_LOG_DBG("dlb: consume immediate - %d QEs\n", num); qm_port->owed_tokens = 0; return 0; } static inline uint16_t __dlb_event_enqueue_burst(void *event_port, const struct rte_event events[], uint16_t num, bool use_delayed) { struct dlb_eventdev_port *ev_port = event_port; struct dlb_port *qm_port = &ev_port->qm_port; struct process_local_port_data *port_data; int i; RTE_ASSERT(ev_port->enq_configured); RTE_ASSERT(events != NULL); rte_errno = 0; i = 0; port_data = &dlb_port[qm_port->id][PORT_TYPE(qm_port)]; while (i < num) { uint8_t sched_types[DLB_NUM_QES_PER_CACHE_LINE]; uint8_t queue_ids[DLB_NUM_QES_PER_CACHE_LINE]; int pop_offs = 0; int j = 0; memset(qm_port->qe4, 0, DLB_NUM_QES_PER_CACHE_LINE * sizeof(struct dlb_enqueue_qe)); for (; j < DLB_NUM_QES_PER_CACHE_LINE && (i + j) < num; j++) { const struct rte_event *ev = &events[i + j]; int16_t thresh = qm_port->token_pop_thresh; if (use_delayed && qm_port->token_pop_mode == DELAYED_POP && (ev->op == RTE_EVENT_OP_FORWARD || ev->op == RTE_EVENT_OP_RELEASE) && qm_port->issued_releases >= thresh - 1) { /* Insert the token pop QE and break out. This * may result in a partial HCW, but that is * simpler than supporting arbitrary QE * insertion. */ dlb_construct_token_pop_qe(qm_port, j); /* Reset the releases for the next QE batch */ qm_port->issued_releases -= thresh; /* When using delayed token pop mode, the * initial token threshold is the full CQ * depth. After the first token pop, we need to * reset it to the dequeue_depth. */ qm_port->token_pop_thresh = qm_port->dequeue_depth; pop_offs = 1; j++; break; } if (dlb_event_enqueue_prep(ev_port, qm_port, ev, port_data, &sched_types[j], &queue_ids[j])) break; } if (j == 0) break; dlb_event_build_hcws(qm_port, &events[i], j - pop_offs, sched_types, queue_ids); dlb_hw_do_enqueue(qm_port, i == 0, port_data); /* Don't include the token pop QE in the enqueue count */ i += j - pop_offs; /* Don't interpret j < DLB_NUM_... as out-of-credits if * pop_offs != 0 */ if (j < DLB_NUM_QES_PER_CACHE_LINE && pop_offs == 0) break; } RTE_ASSERT(!((i == 0 && rte_errno != -ENOSPC))); return i; } static inline uint16_t dlb_event_enqueue_burst(void *event_port, const struct rte_event events[], uint16_t num) { return __dlb_event_enqueue_burst(event_port, events, num, false); } static inline uint16_t dlb_event_enqueue_burst_delayed(void *event_port, const struct rte_event events[], uint16_t num) { return __dlb_event_enqueue_burst(event_port, events, num, true); } static inline uint16_t dlb_event_enqueue(void *event_port, const struct rte_event events[]) { return __dlb_event_enqueue_burst(event_port, events, 1, false); } static inline uint16_t dlb_event_enqueue_delayed(void *event_port, const struct rte_event events[]) { return __dlb_event_enqueue_burst(event_port, events, 1, true); } static uint16_t dlb_event_enqueue_new_burst(void *event_port, const struct rte_event events[], uint16_t num) { return __dlb_event_enqueue_burst(event_port, events, num, false); } static uint16_t dlb_event_enqueue_new_burst_delayed(void *event_port, const struct rte_event events[], uint16_t num) { return __dlb_event_enqueue_burst(event_port, events, num, true); } static uint16_t dlb_event_enqueue_forward_burst(void *event_port, const struct rte_event events[], uint16_t num) { return __dlb_event_enqueue_burst(event_port, events, num, false); } static uint16_t dlb_event_enqueue_forward_burst_delayed(void *event_port, const struct rte_event events[], uint16_t num) { return __dlb_event_enqueue_burst(event_port, events, num, true); } static __rte_always_inline int dlb_recv_qe(struct dlb_port *qm_port, struct dlb_dequeue_qe *qe, uint8_t *offset) { uint8_t xor_mask[2][4] = { {0x0F, 0x0E, 0x0C, 0x08}, {0x00, 0x01, 0x03, 0x07} }; uint8_t and_mask[4] = {0x0F, 0x0E, 0x0C, 0x08}; volatile struct dlb_dequeue_qe *cq_addr; __m128i *qes = (__m128i *)qe; uint64_t *cache_line_base; uint8_t gen_bits; cq_addr = dlb_port[qm_port->id][PORT_TYPE(qm_port)].cq_base; cq_addr = &cq_addr[qm_port->cq_idx]; cache_line_base = (void *)(((uintptr_t)cq_addr) & ~0x3F); *offset = ((uintptr_t)cq_addr & 0x30) >> 4; /* Load the next CQ cache line from memory. Pack these reads as tight * as possible to reduce the chance that DLB invalidates the line while * the CPU is reading it. Read the cache line backwards to ensure that * if QE[N] (N > 0) is valid, then QEs[0:N-1] are too. * * (Valid QEs start at &qe[offset]) */ qes[3] = _mm_load_si128((__m128i *)&cache_line_base[6]); qes[2] = _mm_load_si128((__m128i *)&cache_line_base[4]); qes[1] = _mm_load_si128((__m128i *)&cache_line_base[2]); qes[0] = _mm_load_si128((__m128i *)&cache_line_base[0]); /* Evict the cache line ASAP */ rte_cldemote(cache_line_base); /* Extract and combine the gen bits */ gen_bits = ((_mm_extract_epi8(qes[0], 15) & 0x1) << 0) | ((_mm_extract_epi8(qes[1], 15) & 0x1) << 1) | ((_mm_extract_epi8(qes[2], 15) & 0x1) << 2) | ((_mm_extract_epi8(qes[3], 15) & 0x1) << 3); /* XOR the combined bits such that a 1 represents a valid QE */ gen_bits ^= xor_mask[qm_port->gen_bit][*offset]; /* Mask off gen bits we don't care about */ gen_bits &= and_mask[*offset]; return __builtin_popcount(gen_bits); } static inline void dlb_inc_cq_idx(struct dlb_port *qm_port, int cnt) { uint16_t idx = qm_port->cq_idx_unmasked + cnt; qm_port->cq_idx_unmasked = idx; qm_port->cq_idx = idx & qm_port->cq_depth_mask; qm_port->gen_bit = (~(idx >> qm_port->gen_bit_shift)) & 0x1; } static inline int dlb_process_dequeue_qes(struct dlb_eventdev_port *ev_port, struct dlb_port *qm_port, struct rte_event *events, struct dlb_dequeue_qe *qes, int cnt) { uint8_t *qid_mappings = qm_port->qid_mappings; int i, num; RTE_SET_USED(ev_port); /* avoids unused variable error */ for (i = 0, num = 0; i < cnt; i++) { struct dlb_dequeue_qe *qe = &qes[i]; int sched_type_map[4] = { [DLB_SCHED_ATOMIC] = RTE_SCHED_TYPE_ATOMIC, [DLB_SCHED_UNORDERED] = RTE_SCHED_TYPE_PARALLEL, [DLB_SCHED_ORDERED] = RTE_SCHED_TYPE_ORDERED, [DLB_SCHED_DIRECTED] = RTE_SCHED_TYPE_ATOMIC, }; DLB_LOG_DBG("dequeue success, data = 0x%llx, qid=%d, event_type=%d, subevent=%d\npp_id = %d, sched_type = %d, qid = %d, err=%d\n", (long long)qe->data, qe->qid, qe->u.event_type.major, qe->u.event_type.sub, qe->pp_id, qe->sched_type, qe->qid, qe->error); /* Fill in event information. * Note that flow_id must be embedded in the data by * the app, such as the mbuf RSS hash field if the data * buffer is a mbuf. */ if (unlikely(qe->error)) { DLB_LOG_ERR("QE error bit ON\n"); DLB_INC_STAT(ev_port->stats.traffic.rx_drop, 1); dlb_consume_qe_immediate(qm_port, 1); continue; /* Ignore */ } events[num].u64 = qe->data; events[num].queue_id = qid_mappings[qe->qid]; events[num].priority = DLB_TO_EV_PRIO((uint8_t)qe->priority); events[num].event_type = qe->u.event_type.major; events[num].sub_event_type = qe->u.event_type.sub; events[num].sched_type = sched_type_map[qe->sched_type]; DLB_INC_STAT(ev_port->stats.rx_sched_cnt[qe->sched_type], 1); num++; } DLB_INC_STAT(ev_port->stats.traffic.rx_ok, num); return num; } static inline int dlb_process_dequeue_four_qes(struct dlb_eventdev_port *ev_port, struct dlb_port *qm_port, struct rte_event *events, struct dlb_dequeue_qe *qes) { int sched_type_map[] = { [DLB_SCHED_ATOMIC] = RTE_SCHED_TYPE_ATOMIC, [DLB_SCHED_UNORDERED] = RTE_SCHED_TYPE_PARALLEL, [DLB_SCHED_ORDERED] = RTE_SCHED_TYPE_ORDERED, [DLB_SCHED_DIRECTED] = RTE_SCHED_TYPE_ATOMIC, }; const int num_events = DLB_NUM_QES_PER_CACHE_LINE; uint8_t *qid_mappings = qm_port->qid_mappings; __m128i sse_evt[2]; int i; /* In the unlikely case that any of the QE error bits are set, process * them one at a time. */ if (unlikely(qes[0].error || qes[1].error || qes[2].error || qes[3].error)) return dlb_process_dequeue_qes(ev_port, qm_port, events, qes, num_events); for (i = 0; i < DLB_NUM_QES_PER_CACHE_LINE; i++) { DLB_LOG_DBG("dequeue success, data = 0x%llx, qid=%d, event_type=%d, subevent=%d\npp_id = %d, sched_type = %d, qid = %d, err=%d\n", (long long)qes[i].data, qes[i].qid, qes[i].u.event_type.major, qes[i].u.event_type.sub, qes[i].pp_id, qes[i].sched_type, qes[i].qid, qes[i].error); } events[0].u64 = qes[0].data; events[1].u64 = qes[1].data; events[2].u64 = qes[2].data; events[3].u64 = qes[3].data; /* Construct the metadata portion of two struct rte_events * in one 128b SSE register. Event metadata is constructed in the SSE * registers like so: * sse_evt[0][63:0]: event[0]'s metadata * sse_evt[0][127:64]: event[1]'s metadata * sse_evt[1][63:0]: event[2]'s metadata * sse_evt[1][127:64]: event[3]'s metadata */ sse_evt[0] = _mm_setzero_si128(); sse_evt[1] = _mm_setzero_si128(); /* Convert the hardware queue ID to an event queue ID and store it in * the metadata: * sse_evt[0][47:40] = qid_mappings[qes[0].qid] * sse_evt[0][111:104] = qid_mappings[qes[1].qid] * sse_evt[1][47:40] = qid_mappings[qes[2].qid] * sse_evt[1][111:104] = qid_mappings[qes[3].qid] */ #define DLB_EVENT_QUEUE_ID_BYTE 5 sse_evt[0] = _mm_insert_epi8(sse_evt[0], qid_mappings[qes[0].qid], DLB_EVENT_QUEUE_ID_BYTE); sse_evt[0] = _mm_insert_epi8(sse_evt[0], qid_mappings[qes[1].qid], DLB_EVENT_QUEUE_ID_BYTE + 8); sse_evt[1] = _mm_insert_epi8(sse_evt[1], qid_mappings[qes[2].qid], DLB_EVENT_QUEUE_ID_BYTE); sse_evt[1] = _mm_insert_epi8(sse_evt[1], qid_mappings[qes[3].qid], DLB_EVENT_QUEUE_ID_BYTE + 8); /* Convert the hardware priority to an event priority and store it in * the metadata: * sse_evt[0][55:48] = DLB_TO_EV_PRIO(qes[0].priority) * sse_evt[0][119:112] = DLB_TO_EV_PRIO(qes[1].priority) * sse_evt[1][55:48] = DLB_TO_EV_PRIO(qes[2].priority) * sse_evt[1][119:112] = DLB_TO_EV_PRIO(qes[3].priority) */ #define DLB_EVENT_PRIO_BYTE 6 sse_evt[0] = _mm_insert_epi8(sse_evt[0], DLB_TO_EV_PRIO((uint8_t)qes[0].priority), DLB_EVENT_PRIO_BYTE); sse_evt[0] = _mm_insert_epi8(sse_evt[0], DLB_TO_EV_PRIO((uint8_t)qes[1].priority), DLB_EVENT_PRIO_BYTE + 8); sse_evt[1] = _mm_insert_epi8(sse_evt[1], DLB_TO_EV_PRIO((uint8_t)qes[2].priority), DLB_EVENT_PRIO_BYTE); sse_evt[1] = _mm_insert_epi8(sse_evt[1], DLB_TO_EV_PRIO((uint8_t)qes[3].priority), DLB_EVENT_PRIO_BYTE + 8); /* Write the event type and sub event type to the event metadata. Leave * flow ID unspecified, since the hardware does not maintain it during * scheduling: * sse_evt[0][31:0] = qes[0].u.event_type.major << 28 | * qes[0].u.event_type.sub << 20; * sse_evt[0][95:64] = qes[1].u.event_type.major << 28 | * qes[1].u.event_type.sub << 20; * sse_evt[1][31:0] = qes[2].u.event_type.major << 28 | * qes[2].u.event_type.sub << 20; * sse_evt[1][95:64] = qes[3].u.event_type.major << 28 | * qes[3].u.event_type.sub << 20; */ #define DLB_EVENT_EV_TYPE_DW 0 #define DLB_EVENT_EV_TYPE_SHIFT 28 #define DLB_EVENT_SUB_EV_TYPE_SHIFT 20 sse_evt[0] = _mm_insert_epi32(sse_evt[0], qes[0].u.event_type.major << DLB_EVENT_EV_TYPE_SHIFT | qes[0].u.event_type.sub << DLB_EVENT_SUB_EV_TYPE_SHIFT, DLB_EVENT_EV_TYPE_DW); sse_evt[0] = _mm_insert_epi32(sse_evt[0], qes[1].u.event_type.major << DLB_EVENT_EV_TYPE_SHIFT | qes[1].u.event_type.sub << DLB_EVENT_SUB_EV_TYPE_SHIFT, DLB_EVENT_EV_TYPE_DW + 2); sse_evt[1] = _mm_insert_epi32(sse_evt[1], qes[2].u.event_type.major << DLB_EVENT_EV_TYPE_SHIFT | qes[2].u.event_type.sub << DLB_EVENT_SUB_EV_TYPE_SHIFT, DLB_EVENT_EV_TYPE_DW); sse_evt[1] = _mm_insert_epi32(sse_evt[1], qes[3].u.event_type.major << DLB_EVENT_EV_TYPE_SHIFT | qes[3].u.event_type.sub << DLB_EVENT_SUB_EV_TYPE_SHIFT, DLB_EVENT_EV_TYPE_DW + 2); /* Write the sched type to the event metadata. 'op' and 'rsvd' are not * set: * sse_evt[0][39:32] = sched_type_map[qes[0].sched_type] << 6 * sse_evt[0][103:96] = sched_type_map[qes[1].sched_type] << 6 * sse_evt[1][39:32] = sched_type_map[qes[2].sched_type] << 6 * sse_evt[1][103:96] = sched_type_map[qes[3].sched_type] << 6 */ #define DLB_EVENT_SCHED_TYPE_BYTE 4 #define DLB_EVENT_SCHED_TYPE_SHIFT 6 sse_evt[0] = _mm_insert_epi8(sse_evt[0], sched_type_map[qes[0].sched_type] << DLB_EVENT_SCHED_TYPE_SHIFT, DLB_EVENT_SCHED_TYPE_BYTE); sse_evt[0] = _mm_insert_epi8(sse_evt[0], sched_type_map[qes[1].sched_type] << DLB_EVENT_SCHED_TYPE_SHIFT, DLB_EVENT_SCHED_TYPE_BYTE + 8); sse_evt[1] = _mm_insert_epi8(sse_evt[1], sched_type_map[qes[2].sched_type] << DLB_EVENT_SCHED_TYPE_SHIFT, DLB_EVENT_SCHED_TYPE_BYTE); sse_evt[1] = _mm_insert_epi8(sse_evt[1], sched_type_map[qes[3].sched_type] << DLB_EVENT_SCHED_TYPE_SHIFT, DLB_EVENT_SCHED_TYPE_BYTE + 8); /* Store the metadata to the event (use the double-precision * _mm_storeh_pd because there is no integer function for storing the * upper 64b): * events[0].event = sse_evt[0][63:0] * events[1].event = sse_evt[0][127:64] * events[2].event = sse_evt[1][63:0] * events[3].event = sse_evt[1][127:64] */ _mm_storel_epi64((__m128i *)&events[0].event, sse_evt[0]); _mm_storeh_pd((double *)&events[1].event, (__m128d) sse_evt[0]); _mm_storel_epi64((__m128i *)&events[2].event, sse_evt[1]); _mm_storeh_pd((double *)&events[3].event, (__m128d) sse_evt[1]); DLB_INC_STAT(ev_port->stats.rx_sched_cnt[qes[0].sched_type], 1); DLB_INC_STAT(ev_port->stats.rx_sched_cnt[qes[1].sched_type], 1); DLB_INC_STAT(ev_port->stats.rx_sched_cnt[qes[2].sched_type], 1); DLB_INC_STAT(ev_port->stats.rx_sched_cnt[qes[3].sched_type], 1); DLB_INC_STAT(ev_port->stats.traffic.rx_ok, num_events); return num_events; } static inline int dlb_dequeue_wait(struct dlb_eventdev *dlb, struct dlb_eventdev_port *ev_port, struct dlb_port *qm_port, uint64_t timeout, uint64_t start_ticks) { struct process_local_port_data *port_data; uint64_t elapsed_ticks; port_data = &dlb_port[qm_port->id][PORT_TYPE(qm_port)]; elapsed_ticks = rte_get_timer_cycles() - start_ticks; /* Wait/poll time expired */ if (elapsed_ticks >= timeout) { /* Interrupts not supported by PF PMD */ return 1; } else if (dlb->umwait_allowed) { volatile struct dlb_dequeue_qe *cq_base; union { uint64_t raw_qe[2]; struct dlb_dequeue_qe qe; } qe_mask; uint64_t expected_value; volatile uint64_t *monitor_addr; qe_mask.qe.cq_gen = 1; /* set mask */ cq_base = port_data->cq_base; monitor_addr = (volatile uint64_t *)(volatile void *) &cq_base[qm_port->cq_idx]; monitor_addr++; /* cq_gen bit is in second 64bit location */ if (qm_port->gen_bit) expected_value = qe_mask.raw_qe[1]; else expected_value = 0; rte_power_monitor(monitor_addr, expected_value, qe_mask.raw_qe[1], timeout + start_ticks, sizeof(uint64_t)); DLB_INC_STAT(ev_port->stats.traffic.rx_umonitor_umwait, 1); } else { uint64_t poll_interval = RTE_LIBRTE_PMD_DLB_POLL_INTERVAL; uint64_t curr_ticks = rte_get_timer_cycles(); uint64_t init_ticks = curr_ticks; while ((curr_ticks - start_ticks < timeout) && (curr_ticks - init_ticks < poll_interval)) curr_ticks = rte_get_timer_cycles(); } return 0; } static inline int16_t dlb_hw_dequeue(struct dlb_eventdev *dlb, struct dlb_eventdev_port *ev_port, struct rte_event *events, uint16_t max_num, uint64_t dequeue_timeout_ticks) { uint64_t timeout; uint64_t start_ticks = 0ULL; struct dlb_port *qm_port; int num = 0; qm_port = &ev_port->qm_port; /* If configured for per dequeue wait, then use wait value provided * to this API. Otherwise we must use the global * value from eventdev config time. */ if (!dlb->global_dequeue_wait) timeout = dequeue_timeout_ticks; else timeout = dlb->global_dequeue_wait_ticks; if (timeout) start_ticks = rte_get_timer_cycles(); while (num < max_num) { struct dlb_dequeue_qe qes[DLB_NUM_QES_PER_CACHE_LINE]; uint8_t offset; int num_avail; /* Copy up to 4 QEs from the current cache line into qes */ num_avail = dlb_recv_qe(qm_port, qes, &offset); /* But don't process more than the user requested */ num_avail = RTE_MIN(num_avail, max_num - num); dlb_inc_cq_idx(qm_port, num_avail); if (num_avail == DLB_NUM_QES_PER_CACHE_LINE) num += dlb_process_dequeue_four_qes(ev_port, qm_port, &events[num], &qes[offset]); else if (num_avail) num += dlb_process_dequeue_qes(ev_port, qm_port, &events[num], &qes[offset], num_avail); else if ((timeout == 0) || (num > 0)) /* Not waiting in any form, or 1+ events received? */ break; else if (dlb_dequeue_wait(dlb, ev_port, qm_port, timeout, start_ticks)) break; } qm_port->owed_tokens += num; if (num && qm_port->token_pop_mode == AUTO_POP) dlb_consume_qe_immediate(qm_port, num); ev_port->outstanding_releases += num; return num; } static __rte_always_inline int dlb_recv_qe_sparse(struct dlb_port *qm_port, struct dlb_dequeue_qe *qe) { volatile struct dlb_dequeue_qe *cq_addr; uint8_t xor_mask[2] = {0x0F, 0x00}; const uint8_t and_mask = 0x0F; __m128i *qes = (__m128i *)qe; uint8_t gen_bits, gen_bit; uintptr_t addr[4]; uint16_t idx; cq_addr = dlb_port[qm_port->id][PORT_TYPE(qm_port)].cq_base; idx = qm_port->cq_idx; /* Load the next 4 QEs */ addr[0] = (uintptr_t)&cq_addr[idx]; addr[1] = (uintptr_t)&cq_addr[(idx + 4) & qm_port->cq_depth_mask]; addr[2] = (uintptr_t)&cq_addr[(idx + 8) & qm_port->cq_depth_mask]; addr[3] = (uintptr_t)&cq_addr[(idx + 12) & qm_port->cq_depth_mask]; /* Prefetch next batch of QEs (all CQs occupy minimum 8 cache lines) */ rte_prefetch0(&cq_addr[(idx + 16) & qm_port->cq_depth_mask]); rte_prefetch0(&cq_addr[(idx + 20) & qm_port->cq_depth_mask]); rte_prefetch0(&cq_addr[(idx + 24) & qm_port->cq_depth_mask]); rte_prefetch0(&cq_addr[(idx + 28) & qm_port->cq_depth_mask]); /* Correct the xor_mask for wrap-around QEs */ gen_bit = qm_port->gen_bit; xor_mask[gen_bit] ^= !!((idx + 4) > qm_port->cq_depth_mask) << 1; xor_mask[gen_bit] ^= !!((idx + 8) > qm_port->cq_depth_mask) << 2; xor_mask[gen_bit] ^= !!((idx + 12) > qm_port->cq_depth_mask) << 3; /* Read the cache lines backwards to ensure that if QE[N] (N > 0) is * valid, then QEs[0:N-1] are too. */ qes[3] = _mm_load_si128((__m128i *)(void *)addr[3]); rte_compiler_barrier(); qes[2] = _mm_load_si128((__m128i *)(void *)addr[2]); rte_compiler_barrier(); qes[1] = _mm_load_si128((__m128i *)(void *)addr[1]); rte_compiler_barrier(); qes[0] = _mm_load_si128((__m128i *)(void *)addr[0]); /* Extract and combine the gen bits */ gen_bits = ((_mm_extract_epi8(qes[0], 15) & 0x1) << 0) | ((_mm_extract_epi8(qes[1], 15) & 0x1) << 1) | ((_mm_extract_epi8(qes[2], 15) & 0x1) << 2) | ((_mm_extract_epi8(qes[3], 15) & 0x1) << 3); /* XOR the combined bits such that a 1 represents a valid QE */ gen_bits ^= xor_mask[gen_bit]; /* Mask off gen bits we don't care about */ gen_bits &= and_mask; return __builtin_popcount(gen_bits); } static inline int16_t dlb_hw_dequeue_sparse(struct dlb_eventdev *dlb, struct dlb_eventdev_port *ev_port, struct rte_event *events, uint16_t max_num, uint64_t dequeue_timeout_ticks) { uint64_t timeout; uint64_t start_ticks = 0ULL; struct dlb_port *qm_port; int num = 0; qm_port = &ev_port->qm_port; /* If configured for per dequeue wait, then use wait value provided * to this API. Otherwise we must use the global * value from eventdev config time. */ if (!dlb->global_dequeue_wait) timeout = dequeue_timeout_ticks; else timeout = dlb->global_dequeue_wait_ticks; if (timeout) start_ticks = rte_get_timer_cycles(); while (num < max_num) { struct dlb_dequeue_qe qes[DLB_NUM_QES_PER_CACHE_LINE]; int num_avail; /* Copy up to 4 QEs from the current cache line into qes */ num_avail = dlb_recv_qe_sparse(qm_port, qes); /* But don't process more than the user requested */ num_avail = RTE_MIN(num_avail, max_num - num); dlb_inc_cq_idx(qm_port, num_avail << 2); if (num_avail == DLB_NUM_QES_PER_CACHE_LINE) num += dlb_process_dequeue_four_qes(ev_port, qm_port, &events[num], &qes[0]); else if (num_avail) num += dlb_process_dequeue_qes(ev_port, qm_port, &events[num], &qes[0], num_avail); else if ((timeout == 0) || (num > 0)) /* Not waiting in any form, or 1+ events received? */ break; else if (dlb_dequeue_wait(dlb, ev_port, qm_port, timeout, start_ticks)) break; } qm_port->owed_tokens += num; if (num && qm_port->token_pop_mode == AUTO_POP) dlb_consume_qe_immediate(qm_port, num); ev_port->outstanding_releases += num; return num; } static int dlb_event_release(struct dlb_eventdev *dlb, uint8_t port_id, int n) { struct process_local_port_data *port_data; struct dlb_eventdev_port *ev_port; struct dlb_port *qm_port; int i; if (port_id > dlb->num_ports) { DLB_LOG_ERR("Invalid port id %d in dlb-event_release\n", port_id); rte_errno = -EINVAL; return rte_errno; } ev_port = &dlb->ev_ports[port_id]; qm_port = &ev_port->qm_port; port_data = &dlb_port[qm_port->id][PORT_TYPE(qm_port)]; i = 0; if (qm_port->is_directed) { i = n; goto sw_credit_update; } while (i < n) { int pop_offs = 0; int j = 0; /* Zero-out QEs */ qm_port->qe4[0].cmd_byte = 0; qm_port->qe4[1].cmd_byte = 0; qm_port->qe4[2].cmd_byte = 0; qm_port->qe4[3].cmd_byte = 0; for (; j < DLB_NUM_QES_PER_CACHE_LINE && (i + j) < n; j++) { int16_t thresh = qm_port->token_pop_thresh; if (qm_port->token_pop_mode == DELAYED_POP && qm_port->issued_releases >= thresh - 1) { /* Insert the token pop QE */ dlb_construct_token_pop_qe(qm_port, j); /* Reset the releases for the next QE batch */ qm_port->issued_releases -= thresh; /* When using delayed token pop mode, the * initial token threshold is the full CQ * depth. After the first token pop, we need to * reset it to the dequeue_depth. */ qm_port->token_pop_thresh = qm_port->dequeue_depth; pop_offs = 1; j++; break; } qm_port->qe4[j].cmd_byte = DLB_COMP_CMD_BYTE; qm_port->issued_releases++; } dlb_hw_do_enqueue(qm_port, i == 0, port_data); /* Don't include the token pop QE in the release count */ i += j - pop_offs; } sw_credit_update: /* each release returns one credit */ if (!ev_port->outstanding_releases) { DLB_LOG_ERR("Unrecoverable application error. Outstanding releases underflowed.\n"); rte_errno = -ENOTRECOVERABLE; return rte_errno; } ev_port->outstanding_releases -= i; ev_port->inflight_credits += i; /* Replenish s/w credits if enough releases are performed */ dlb_replenish_sw_credits(dlb, ev_port); return 0; } static uint16_t dlb_event_dequeue_burst(void *event_port, struct rte_event *ev, uint16_t num, uint64_t wait) { struct dlb_eventdev_port *ev_port = event_port; struct dlb_port *qm_port = &ev_port->qm_port; struct dlb_eventdev *dlb = ev_port->dlb; uint16_t cnt; int ret; rte_errno = 0; RTE_ASSERT(ev_port->setup_done); RTE_ASSERT(ev != NULL); if (ev_port->implicit_release && ev_port->outstanding_releases > 0) { uint16_t out_rels = ev_port->outstanding_releases; ret = dlb_event_release(dlb, ev_port->id, out_rels); if (ret) return(ret); DLB_INC_STAT(ev_port->stats.tx_implicit_rel, out_rels); } if (qm_port->token_pop_mode == DEFERRED_POP && qm_port->owed_tokens) dlb_consume_qe_immediate(qm_port, qm_port->owed_tokens); cnt = dlb_hw_dequeue(dlb, ev_port, ev, num, wait); DLB_INC_STAT(ev_port->stats.traffic.total_polls, 1); DLB_INC_STAT(ev_port->stats.traffic.zero_polls, ((cnt == 0) ? 1 : 0)); return cnt; } static uint16_t dlb_event_dequeue(void *event_port, struct rte_event *ev, uint64_t wait) { return dlb_event_dequeue_burst(event_port, ev, 1, wait); } static uint16_t dlb_event_dequeue_burst_sparse(void *event_port, struct rte_event *ev, uint16_t num, uint64_t wait) { struct dlb_eventdev_port *ev_port = event_port; struct dlb_port *qm_port = &ev_port->qm_port; struct dlb_eventdev *dlb = ev_port->dlb; uint16_t cnt; int ret; rte_errno = 0; RTE_ASSERT(ev_port->setup_done); RTE_ASSERT(ev != NULL); if (ev_port->implicit_release && ev_port->outstanding_releases > 0) { uint16_t out_rels = ev_port->outstanding_releases; ret = dlb_event_release(dlb, ev_port->id, out_rels); if (ret) return(ret); DLB_INC_STAT(ev_port->stats.tx_implicit_rel, out_rels); } if (qm_port->token_pop_mode == DEFERRED_POP && qm_port->owed_tokens) dlb_consume_qe_immediate(qm_port, qm_port->owed_tokens); cnt = dlb_hw_dequeue_sparse(dlb, ev_port, ev, num, wait); DLB_INC_STAT(ev_port->stats.traffic.total_polls, 1); DLB_INC_STAT(ev_port->stats.traffic.zero_polls, ((cnt == 0) ? 1 : 0)); return cnt; } static uint16_t dlb_event_dequeue_sparse(void *event_port, struct rte_event *ev, uint64_t wait) { return dlb_event_dequeue_burst_sparse(event_port, ev, 1, wait); } static uint32_t dlb_get_ldb_queue_depth(struct dlb_eventdev *dlb, struct dlb_eventdev_queue *queue) { struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_get_ldb_queue_depth_args cfg; struct dlb_cmd_response response = {0}; int ret; cfg.queue_id = queue->qm_queue.id; cfg.response = (uintptr_t)&response; ret = dlb_iface_get_ldb_queue_depth(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: get_ldb_queue_depth ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); return ret; } return response.id; } static uint32_t dlb_get_dir_queue_depth(struct dlb_eventdev *dlb, struct dlb_eventdev_queue *queue) { struct dlb_hw_dev *handle = &dlb->qm_instance; struct dlb_get_dir_queue_depth_args cfg; struct dlb_cmd_response response = {0}; int ret; cfg.queue_id = queue->qm_queue.id; cfg.response = (uintptr_t)&response; ret = dlb_iface_get_dir_queue_depth(handle, &cfg); if (ret < 0) { DLB_LOG_ERR("dlb: get_dir_queue_depth ret=%d (driver status: %s)\n", ret, dlb_error_strings[response.status]); return ret; } return response.id; } uint32_t dlb_get_queue_depth(struct dlb_eventdev *dlb, struct dlb_eventdev_queue *queue) { if (queue->qm_queue.is_directed) return dlb_get_dir_queue_depth(dlb, queue); else return dlb_get_ldb_queue_depth(dlb, queue); } static bool dlb_queue_is_empty(struct dlb_eventdev *dlb, struct dlb_eventdev_queue *queue) { return dlb_get_queue_depth(dlb, queue) == 0; } static bool dlb_linked_queues_empty(struct dlb_eventdev *dlb) { int i; for (i = 0; i < dlb->num_queues; i++) { if (dlb->ev_queues[i].num_links == 0) continue; if (!dlb_queue_is_empty(dlb, &dlb->ev_queues[i])) return false; } return true; } static bool dlb_queues_empty(struct dlb_eventdev *dlb) { int i; for (i = 0; i < dlb->num_queues; i++) { if (!dlb_queue_is_empty(dlb, &dlb->ev_queues[i])) return false; } return true; } static void dlb_flush_port(struct rte_eventdev *dev, int port_id) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); eventdev_stop_flush_t flush; struct rte_event ev; uint8_t dev_id; void *arg; int i; flush = dev->dev_ops->dev_stop_flush; dev_id = dev->data->dev_id; arg = dev->data->dev_stop_flush_arg; while (rte_event_dequeue_burst(dev_id, port_id, &ev, 1, 0)) { if (flush) flush(dev_id, ev, arg); if (dlb->ev_ports[port_id].qm_port.is_directed) continue; ev.op = RTE_EVENT_OP_RELEASE; rte_event_enqueue_burst(dev_id, port_id, &ev, 1); } /* Enqueue any additional outstanding releases */ ev.op = RTE_EVENT_OP_RELEASE; for (i = dlb->ev_ports[port_id].outstanding_releases; i > 0; i--) rte_event_enqueue_burst(dev_id, port_id, &ev, 1); } static void dlb_drain(struct rte_eventdev *dev) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); struct dlb_eventdev_port *ev_port = NULL; uint8_t dev_id; int i; dev_id = dev->data->dev_id; while (!dlb_linked_queues_empty(dlb)) { /* Flush all the ev_ports, which will drain all their connected * queues. */ for (i = 0; i < dlb->num_ports; i++) dlb_flush_port(dev, i); } /* The queues are empty, but there may be events left in the ports. */ for (i = 0; i < dlb->num_ports; i++) dlb_flush_port(dev, i); /* If the domain's queues are empty, we're done. */ if (dlb_queues_empty(dlb)) return; /* Else, there must be at least one unlinked load-balanced queue. * Select a load-balanced port with which to drain the unlinked * queue(s). */ for (i = 0; i < dlb->num_ports; i++) { ev_port = &dlb->ev_ports[i]; if (!ev_port->qm_port.is_directed) break; } if (i == dlb->num_ports) { DLB_LOG_ERR("internal error: no LDB ev_ports\n"); return; } rte_errno = 0; rte_event_port_unlink(dev_id, ev_port->id, NULL, 0); if (rte_errno) { DLB_LOG_ERR("internal error: failed to unlink ev_port %d\n", ev_port->id); return; } for (i = 0; i < dlb->num_queues; i++) { uint8_t qid, prio; int ret; if (dlb_queue_is_empty(dlb, &dlb->ev_queues[i])) continue; qid = i; prio = 0; /* Link the ev_port to the queue */ ret = rte_event_port_link(dev_id, ev_port->id, &qid, &prio, 1); if (ret != 1) { DLB_LOG_ERR("internal error: failed to link ev_port %d to queue %d\n", ev_port->id, qid); return; } /* Flush the queue */ while (!dlb_queue_is_empty(dlb, &dlb->ev_queues[i])) dlb_flush_port(dev, ev_port->id); /* Drain any extant events in the ev_port. */ dlb_flush_port(dev, ev_port->id); /* Unlink the ev_port from the queue */ ret = rte_event_port_unlink(dev_id, ev_port->id, &qid, 1); if (ret != 1) { DLB_LOG_ERR("internal error: failed to unlink ev_port %d to queue %d\n", ev_port->id, qid); return; } } } static void dlb_eventdev_stop(struct rte_eventdev *dev) { struct dlb_eventdev *dlb = dlb_pmd_priv(dev); rte_spinlock_lock(&dlb->qm_instance.resource_lock); if (dlb->run_state == DLB_RUN_STATE_STOPPED) { DLB_LOG_DBG("Internal error: already stopped\n"); rte_spinlock_unlock(&dlb->qm_instance.resource_lock); return; } else if (dlb->run_state != DLB_RUN_STATE_STARTED) { DLB_LOG_ERR("Internal error: bad state %d for dev_stop\n", (int)dlb->run_state); rte_spinlock_unlock(&dlb->qm_instance.resource_lock); return; } dlb->run_state = DLB_RUN_STATE_STOPPING; rte_spinlock_unlock(&dlb->qm_instance.resource_lock); dlb_drain(dev); dlb->run_state = DLB_RUN_STATE_STOPPED; } static int dlb_eventdev_close(struct rte_eventdev *dev) { dlb_hw_reset_sched_domain(dev, false); return 0; } static void dlb_eventdev_port_release(void *port) { struct dlb_eventdev_port *ev_port = port; if (ev_port) { struct dlb_port *qm_port = &ev_port->qm_port; if (qm_port->config_state == DLB_CONFIGURED) dlb_free_qe_mem(qm_port); } } static void dlb_eventdev_queue_release(struct rte_eventdev *dev, uint8_t id) { RTE_SET_USED(dev); RTE_SET_USED(id); /* This function intentionally left blank. */ } static int dlb_eventdev_timeout_ticks(struct rte_eventdev *dev, uint64_t ns, uint64_t *timeout_ticks) { RTE_SET_USED(dev); uint64_t cycles_per_ns = rte_get_timer_hz() / 1E9; *timeout_ticks = ns * cycles_per_ns; return 0; } void dlb_entry_points_init(struct rte_eventdev *dev) { struct dlb_eventdev *dlb; static struct rte_eventdev_ops dlb_eventdev_entry_ops = { .dev_infos_get = dlb_eventdev_info_get, .dev_configure = dlb_eventdev_configure, .dev_start = dlb_eventdev_start, .dev_stop = dlb_eventdev_stop, .dev_close = dlb_eventdev_close, .queue_def_conf = dlb_eventdev_queue_default_conf_get, .port_def_conf = dlb_eventdev_port_default_conf_get, .queue_setup = dlb_eventdev_queue_setup, .queue_release = dlb_eventdev_queue_release, .port_setup = dlb_eventdev_port_setup, .port_release = dlb_eventdev_port_release, .port_link = dlb_eventdev_port_link, .port_unlink = dlb_eventdev_port_unlink, .port_unlinks_in_progress = dlb_eventdev_port_unlinks_in_progress, .timeout_ticks = dlb_eventdev_timeout_ticks, .dump = dlb_eventdev_dump, .xstats_get = dlb_eventdev_xstats_get, .xstats_get_names = dlb_eventdev_xstats_get_names, .xstats_get_by_name = dlb_eventdev_xstats_get_by_name, .xstats_reset = dlb_eventdev_xstats_reset, .dev_selftest = test_dlb_eventdev, }; /* Expose PMD's eventdev interface */ dev->dev_ops = &dlb_eventdev_entry_ops; dev->enqueue = dlb_event_enqueue; dev->enqueue_burst = dlb_event_enqueue_burst; dev->enqueue_new_burst = dlb_event_enqueue_new_burst; dev->enqueue_forward_burst = dlb_event_enqueue_forward_burst; dev->dequeue = dlb_event_dequeue; dev->dequeue_burst = dlb_event_dequeue_burst; dlb = dev->data->dev_private; if (dlb->poll_mode == DLB_CQ_POLL_MODE_SPARSE) { dev->dequeue = dlb_event_dequeue_sparse; dev->dequeue_burst = dlb_event_dequeue_burst_sparse; } } int dlb_primary_eventdev_probe(struct rte_eventdev *dev, const char *name, struct dlb_devargs *dlb_args) { struct dlb_eventdev *dlb; int err, i; dlb = dev->data->dev_private; dlb->event_dev = dev; /* backlink */ evdev_dlb_default_info.driver_name = name; dlb->max_num_events_override = dlb_args->max_num_events; dlb->num_dir_credits_override = dlb_args->num_dir_credits_override; dlb->defer_sched = dlb_args->defer_sched; dlb->num_atm_inflights_per_queue = dlb_args->num_atm_inflights; /* Open the interface. * For vdev mode, this means open the dlb kernel module. */ err = dlb_iface_open(&dlb->qm_instance, name); if (err < 0) { DLB_LOG_ERR("could not open event hardware device, err=%d\n", err); return err; } err = dlb_iface_get_device_version(&dlb->qm_instance, &dlb->revision); if (err < 0) { DLB_LOG_ERR("dlb: failed to get the device version, err=%d\n", err); return err; } err = dlb_hw_query_resources(dlb); if (err) { DLB_LOG_ERR("get resources err=%d for %s\n", err, name); return err; } err = dlb_iface_get_cq_poll_mode(&dlb->qm_instance, &dlb->poll_mode); if (err < 0) { DLB_LOG_ERR("dlb: failed to get the poll mode, err=%d\n", err); return err; } /* Complete xtstats runtime initialization */ err = dlb_xstats_init(dlb); if (err) { DLB_LOG_ERR("dlb: failed to init xstats, err=%d\n", err); return err; } /* Initialize each port's token pop mode */ for (i = 0; i < DLB_MAX_NUM_PORTS; i++) dlb->ev_ports[i].qm_port.token_pop_mode = AUTO_POP; rte_spinlock_init(&dlb->qm_instance.resource_lock); dlb_iface_low_level_io_init(dlb); dlb_entry_points_init(dev); return 0; } int dlb_secondary_eventdev_probe(struct rte_eventdev *dev, const char *name) { struct dlb_eventdev *dlb; int err; dlb = dev->data->dev_private; evdev_dlb_default_info.driver_name = name; err = dlb_iface_open(&dlb->qm_instance, name); if (err < 0) { DLB_LOG_ERR("could not open event hardware device, err=%d\n", err); return err; } err = dlb_hw_query_resources(dlb); if (err) { DLB_LOG_ERR("get resources err=%d for %s\n", err, name); return err; } dlb_iface_low_level_io_init(dlb); dlb_entry_points_init(dev); return 0; } int dlb_parse_params(const char *params, const char *name, struct dlb_devargs *dlb_args) { int ret = 0; static const char * const args[] = { NUMA_NODE_ARG, DLB_MAX_NUM_EVENTS, DLB_NUM_DIR_CREDITS, DEV_ID_ARG, DLB_DEFER_SCHED_ARG, DLB_NUM_ATM_INFLIGHTS_ARG, NULL }; if (params && params[0] != '\0') { struct rte_kvargs *kvlist = rte_kvargs_parse(params, args); if (kvlist == NULL) { DLB_LOG_INFO("Ignoring unsupported parameters when creating device '%s'\n", name); } else { int ret = rte_kvargs_process(kvlist, NUMA_NODE_ARG, set_numa_node, &dlb_args->socket_id); if (ret != 0) { DLB_LOG_ERR("%s: Error parsing numa node parameter", name); rte_kvargs_free(kvlist); return ret; } ret = rte_kvargs_process(kvlist, DLB_MAX_NUM_EVENTS, set_max_num_events, &dlb_args->max_num_events); if (ret != 0) { DLB_LOG_ERR("%s: Error parsing max_num_events parameter", name); rte_kvargs_free(kvlist); return ret; } ret = rte_kvargs_process(kvlist, DLB_NUM_DIR_CREDITS, set_num_dir_credits, &dlb_args->num_dir_credits_override); if (ret != 0) { DLB_LOG_ERR("%s: Error parsing num_dir_credits parameter", name); rte_kvargs_free(kvlist); return ret; } ret = rte_kvargs_process(kvlist, DEV_ID_ARG, set_dev_id, &dlb_args->dev_id); if (ret != 0) { DLB_LOG_ERR("%s: Error parsing dev_id parameter", name); rte_kvargs_free(kvlist); return ret; } ret = rte_kvargs_process(kvlist, DLB_DEFER_SCHED_ARG, set_defer_sched, &dlb_args->defer_sched); if (ret != 0) { DLB_LOG_ERR("%s: Error parsing defer_sched parameter", name); rte_kvargs_free(kvlist); return ret; } ret = rte_kvargs_process(kvlist, DLB_NUM_ATM_INFLIGHTS_ARG, set_num_atm_inflights, &dlb_args->num_atm_inflights); if (ret != 0) { DLB_LOG_ERR("%s: Error parsing atm_inflights parameter", name); rte_kvargs_free(kvlist); return ret; } rte_kvargs_free(kvlist); } } return ret; } RTE_LOG_REGISTER(eventdev_dlb_log_level, pmd.event.dlb, NOTICE);