From: Nicolas Chautru Date: Mon, 5 Oct 2020 22:12:47 +0000 (-0700) Subject: baseband/acc100: support interrupt X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=06531464151095f1f0d92fc07aa091d494280c93;p=dpdk.git baseband/acc100: support interrupt Adding capability and functions to support MSI interrupts, call backs and inforing. Signed-off-by: Nicolas Chautru Acked-by: Liu Tianjiao Acked-by: Maxime Coquelin --- diff --git a/drivers/baseband/acc100/rte_acc100_pmd.c b/drivers/baseband/acc100/rte_acc100_pmd.c index e9aa07d3b2..408548ea57 100644 --- a/drivers/baseband/acc100/rte_acc100_pmd.c +++ b/drivers/baseband/acc100/rte_acc100_pmd.c @@ -342,6 +342,213 @@ alloc_sw_rings_min_mem(struct rte_bbdev *dev, struct acc100_device *d, free_base_addresses(base_addrs, i); } +/* + * Find queue_id of a device queue based on details from the Info Ring. + * If a queue isn't found UINT16_MAX is returned. + */ +static inline uint16_t +get_queue_id_from_ring_info(struct rte_bbdev_data *data, + const union acc100_info_ring_data ring_data) +{ + uint16_t queue_id; + + for (queue_id = 0; queue_id < data->num_queues; ++queue_id) { + struct acc100_queue *acc100_q = + data->queues[queue_id].queue_private; + if (acc100_q != NULL && acc100_q->aq_id == ring_data.aq_id && + acc100_q->qgrp_id == ring_data.qg_id && + acc100_q->vf_id == ring_data.vf_id) + return queue_id; + } + + return UINT16_MAX; +} + +/* Checks PF Info Ring to find the interrupt cause and handles it accordingly */ +static inline void +acc100_check_ir(struct acc100_device *acc100_dev) +{ + volatile union acc100_info_ring_data *ring_data; + uint16_t info_ring_head = acc100_dev->info_ring_head; + if (acc100_dev->info_ring == NULL) + return; + + ring_data = acc100_dev->info_ring + (acc100_dev->info_ring_head & + ACC100_INFO_RING_MASK); + + while (ring_data->valid) { + if ((ring_data->int_nb < ACC100_PF_INT_DMA_DL_DESC_IRQ) || ( + ring_data->int_nb > + ACC100_PF_INT_DMA_DL5G_DESC_IRQ)) + rte_bbdev_log(WARNING, "InfoRing: ITR:%d Info:0x%x", + ring_data->int_nb, ring_data->detailed_info); + /* Initialize Info Ring entry and move forward */ + ring_data->val = 0; + info_ring_head++; + ring_data = acc100_dev->info_ring + + (info_ring_head & ACC100_INFO_RING_MASK); + } +} + +/* Checks PF Info Ring to find the interrupt cause and handles it accordingly */ +static inline void +acc100_pf_interrupt_handler(struct rte_bbdev *dev) +{ + struct acc100_device *acc100_dev = dev->data->dev_private; + volatile union acc100_info_ring_data *ring_data; + struct acc100_deq_intr_details deq_intr_det; + + ring_data = acc100_dev->info_ring + (acc100_dev->info_ring_head & + ACC100_INFO_RING_MASK); + + while (ring_data->valid) { + + rte_bbdev_log_debug( + "ACC100 PF Interrupt received, Info Ring data: 0x%x", + ring_data->val); + + switch (ring_data->int_nb) { + case ACC100_PF_INT_DMA_DL_DESC_IRQ: + case ACC100_PF_INT_DMA_UL_DESC_IRQ: + case ACC100_PF_INT_DMA_UL5G_DESC_IRQ: + case ACC100_PF_INT_DMA_DL5G_DESC_IRQ: + deq_intr_det.queue_id = get_queue_id_from_ring_info( + dev->data, *ring_data); + if (deq_intr_det.queue_id == UINT16_MAX) { + rte_bbdev_log(ERR, + "Couldn't find queue: aq_id: %u, qg_id: %u, vf_id: %u", + ring_data->aq_id, + ring_data->qg_id, + ring_data->vf_id); + return; + } + rte_bbdev_pmd_callback_process(dev, + RTE_BBDEV_EVENT_DEQUEUE, &deq_intr_det); + break; + default: + rte_bbdev_pmd_callback_process(dev, + RTE_BBDEV_EVENT_ERROR, NULL); + break; + } + + /* Initialize Info Ring entry and move forward */ + ring_data->val = 0; + ++acc100_dev->info_ring_head; + ring_data = acc100_dev->info_ring + + (acc100_dev->info_ring_head & + ACC100_INFO_RING_MASK); + } +} + +/* Checks VF Info Ring to find the interrupt cause and handles it accordingly */ +static inline void +acc100_vf_interrupt_handler(struct rte_bbdev *dev) +{ + struct acc100_device *acc100_dev = dev->data->dev_private; + volatile union acc100_info_ring_data *ring_data; + struct acc100_deq_intr_details deq_intr_det; + + ring_data = acc100_dev->info_ring + (acc100_dev->info_ring_head & + ACC100_INFO_RING_MASK); + + while (ring_data->valid) { + + rte_bbdev_log_debug( + "ACC100 VF Interrupt received, Info Ring data: 0x%x", + ring_data->val); + + switch (ring_data->int_nb) { + case ACC100_VF_INT_DMA_DL_DESC_IRQ: + case ACC100_VF_INT_DMA_UL_DESC_IRQ: + case ACC100_VF_INT_DMA_UL5G_DESC_IRQ: + case ACC100_VF_INT_DMA_DL5G_DESC_IRQ: + /* VFs are not aware of their vf_id - it's set to 0 in + * queue structures. + */ + ring_data->vf_id = 0; + deq_intr_det.queue_id = get_queue_id_from_ring_info( + dev->data, *ring_data); + if (deq_intr_det.queue_id == UINT16_MAX) { + rte_bbdev_log(ERR, + "Couldn't find queue: aq_id: %u, qg_id: %u", + ring_data->aq_id, + ring_data->qg_id); + return; + } + rte_bbdev_pmd_callback_process(dev, + RTE_BBDEV_EVENT_DEQUEUE, &deq_intr_det); + break; + default: + rte_bbdev_pmd_callback_process(dev, + RTE_BBDEV_EVENT_ERROR, NULL); + break; + } + + /* Initialize Info Ring entry and move forward */ + ring_data->valid = 0; + ++acc100_dev->info_ring_head; + ring_data = acc100_dev->info_ring + (acc100_dev->info_ring_head + & ACC100_INFO_RING_MASK); + } +} + +/* Interrupt handler triggered by ACC100 dev for handling specific interrupt */ +static void +acc100_dev_interrupt_handler(void *cb_arg) +{ + struct rte_bbdev *dev = cb_arg; + struct acc100_device *acc100_dev = dev->data->dev_private; + + /* Read info ring */ + if (acc100_dev->pf_device) + acc100_pf_interrupt_handler(dev); + else + acc100_vf_interrupt_handler(dev); +} + +/* Allocate and setup inforing */ +static int +allocate_info_ring(struct rte_bbdev *dev) +{ + struct acc100_device *d = dev->data->dev_private; + const struct acc100_registry_addr *reg_addr; + rte_iova_t info_ring_iova; + uint32_t phys_low, phys_high; + + if (d->info_ring != NULL) + return 0; /* Already configured */ + + /* Choose correct registry addresses for the device type */ + if (d->pf_device) + reg_addr = &pf_reg_addr; + else + reg_addr = &vf_reg_addr; + /* Allocate InfoRing */ + d->info_ring = rte_zmalloc_socket("Info Ring", + ACC100_INFO_RING_NUM_ENTRIES * + sizeof(*d->info_ring), RTE_CACHE_LINE_SIZE, + dev->data->socket_id); + if (d->info_ring == NULL) { + rte_bbdev_log(ERR, + "Failed to allocate Info Ring for %s:%u", + dev->device->driver->name, + dev->data->dev_id); + return -ENOMEM; + } + info_ring_iova = rte_malloc_virt2iova(d->info_ring); + + /* Setup Info Ring */ + phys_high = (uint32_t)(info_ring_iova >> 32); + phys_low = (uint32_t)(info_ring_iova); + acc100_reg_write(d, reg_addr->info_ring_hi, phys_high); + acc100_reg_write(d, reg_addr->info_ring_lo, phys_low); + acc100_reg_write(d, reg_addr->info_ring_en, ACC100_REG_IRQ_EN_ALL); + d->info_ring_head = (acc100_reg_read(d, reg_addr->info_ring_ptr) & + 0xFFF) / sizeof(union acc100_info_ring_data); + return 0; +} + + /* Allocate 64MB memory used for all software rings */ static int acc100_setup_queues(struct rte_bbdev *dev, uint16_t num_queues, int socket_id) @@ -349,6 +556,7 @@ acc100_setup_queues(struct rte_bbdev *dev, uint16_t num_queues, int socket_id) uint32_t phys_low, phys_high, payload; struct acc100_device *d = dev->data->dev_private; const struct acc100_registry_addr *reg_addr; + int ret; if (d->pf_device && !d->acc100_conf.pf_mode_en) { rte_bbdev_log(NOTICE, @@ -432,6 +640,14 @@ acc100_setup_queues(struct rte_bbdev *dev, uint16_t num_queues, int socket_id) acc100_reg_write(d, reg_addr->tail_ptrs_dl4g_hi, phys_high); acc100_reg_write(d, reg_addr->tail_ptrs_dl4g_lo, phys_low); + ret = allocate_info_ring(dev); + if (ret < 0) { + rte_bbdev_log(ERR, "Failed to allocate info_ring for %s:%u", + dev->device->driver->name, + dev->data->dev_id); + /* Continue */ + } + d->harq_layout = rte_zmalloc_socket("HARQ Layout", ACC100_HARQ_LAYOUT * sizeof(*d->harq_layout), RTE_CACHE_LINE_SIZE, dev->data->socket_id); @@ -453,13 +669,59 @@ acc100_setup_queues(struct rte_bbdev *dev, uint16_t num_queues, int socket_id) return 0; } +static int +acc100_intr_enable(struct rte_bbdev *dev) +{ + int ret; + struct acc100_device *d = dev->data->dev_private; + + /* Only MSI are currently supported */ + if (dev->intr_handle->type == RTE_INTR_HANDLE_VFIO_MSI || + dev->intr_handle->type == RTE_INTR_HANDLE_UIO) { + + ret = allocate_info_ring(dev); + if (ret < 0) { + rte_bbdev_log(ERR, + "Couldn't allocate info ring for device: %s", + dev->data->name); + return ret; + } + + ret = rte_intr_enable(dev->intr_handle); + if (ret < 0) { + rte_bbdev_log(ERR, + "Couldn't enable interrupts for device: %s", + dev->data->name); + rte_free(d->info_ring); + return ret; + } + ret = rte_intr_callback_register(dev->intr_handle, + acc100_dev_interrupt_handler, dev); + if (ret < 0) { + rte_bbdev_log(ERR, + "Couldn't register interrupt callback for device: %s", + dev->data->name); + rte_free(d->info_ring); + return ret; + } + + return 0; + } + + rte_bbdev_log(ERR, "ACC100 (%s) supports only VFIO MSI interrupts", + dev->data->name); + return -ENOTSUP; +} + /* Free memory used for software rings */ static int acc100_dev_close(struct rte_bbdev *dev) { struct acc100_device *d = dev->data->dev_private; + acc100_check_ir(d); if (d->sw_rings_base != NULL) { rte_free(d->tail_ptrs); + rte_free(d->info_ring); rte_free(d->sw_rings_base); d->sw_rings_base = NULL; } @@ -670,6 +932,7 @@ acc100_dev_info_get(struct rte_bbdev *dev, RTE_BBDEV_TURBO_CRC_TYPE_24B | RTE_BBDEV_TURBO_HALF_ITERATION_EVEN | RTE_BBDEV_TURBO_EARLY_TERMINATION | + RTE_BBDEV_TURBO_DEC_INTERRUPTS | RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN | RTE_BBDEV_TURBO_MAP_DEC | RTE_BBDEV_TURBO_DEC_TB_CRC_24B_KEEP | @@ -690,6 +953,7 @@ acc100_dev_info_get(struct rte_bbdev *dev, RTE_BBDEV_TURBO_CRC_24B_ATTACH | RTE_BBDEV_TURBO_RV_INDEX_BYPASS | RTE_BBDEV_TURBO_RATE_MATCH | + RTE_BBDEV_TURBO_ENC_INTERRUPTS | RTE_BBDEV_TURBO_ENC_SCATTER_GATHER, .num_buffers_src = RTE_BBDEV_TURBO_MAX_CODE_BLOCKS, @@ -703,7 +967,8 @@ acc100_dev_info_get(struct rte_bbdev *dev, .capability_flags = RTE_BBDEV_LDPC_RATE_MATCH | RTE_BBDEV_LDPC_CRC_24B_ATTACH | - RTE_BBDEV_LDPC_INTERLEAVER_BYPASS, + RTE_BBDEV_LDPC_INTERLEAVER_BYPASS | + RTE_BBDEV_LDPC_ENC_INTERRUPTS, .num_buffers_src = RTE_BBDEV_LDPC_MAX_CODE_BLOCKS, .num_buffers_dst = @@ -728,7 +993,8 @@ acc100_dev_info_get(struct rte_bbdev *dev, RTE_BBDEV_LDPC_DECODE_BYPASS | RTE_BBDEV_LDPC_DEC_SCATTER_GATHER | RTE_BBDEV_LDPC_HARQ_6BIT_COMPRESSION | - RTE_BBDEV_LDPC_LLR_COMPRESSION, + RTE_BBDEV_LDPC_LLR_COMPRESSION | + RTE_BBDEV_LDPC_DEC_INTERRUPTS, .llr_size = 8, .llr_decimals = 1, .num_buffers_src = @@ -778,14 +1044,44 @@ acc100_dev_info_get(struct rte_bbdev *dev, #else dev_info->harq_buffer_size = 0; #endif + acc100_check_ir(d); +} + +static int +acc100_queue_intr_enable(struct rte_bbdev *dev, uint16_t queue_id) +{ + struct acc100_queue *q = dev->data->queues[queue_id].queue_private; + + if (dev->intr_handle->type != RTE_INTR_HANDLE_VFIO_MSI && + dev->intr_handle->type != RTE_INTR_HANDLE_UIO) + return -ENOTSUP; + + q->irq_enable = 1; + return 0; +} + +static int +acc100_queue_intr_disable(struct rte_bbdev *dev, uint16_t queue_id) +{ + struct acc100_queue *q = dev->data->queues[queue_id].queue_private; + + if (dev->intr_handle->type != RTE_INTR_HANDLE_VFIO_MSI && + dev->intr_handle->type != RTE_INTR_HANDLE_UIO) + return -ENOTSUP; + + q->irq_enable = 0; + return 0; } static const struct rte_bbdev_ops acc100_bbdev_ops = { .setup_queues = acc100_setup_queues, + .intr_enable = acc100_intr_enable, .close = acc100_dev_close, .info_get = acc100_dev_info_get, .queue_setup = acc100_queue_setup, .queue_release = acc100_queue_release, + .queue_intr_enable = acc100_queue_intr_enable, + .queue_intr_disable = acc100_queue_intr_disable }; /* ACC100 PCI PF address map */ @@ -3018,8 +3314,10 @@ dequeue_dec_one_op_cb(struct rte_bbdev_queue_data *q_data, ? (1 << RTE_BBDEV_DATA_ERROR) : 0); op->status |= ((rsp.dma_err) ? (1 << RTE_BBDEV_DRV_ERROR) : 0); op->status |= ((rsp.fcw_err) ? (1 << RTE_BBDEV_DRV_ERROR) : 0); - if (op->status != 0) + if (op->status != 0) { q_data->queue_stats.dequeue_err_count++; + acc100_check_ir(q->d); + } /* CRC invalid if error exists */ if (!op->status) @@ -3076,6 +3374,9 @@ dequeue_ldpc_dec_one_op_cb(struct rte_bbdev_queue_data *q_data, op->status |= 1 << RTE_BBDEV_SYNDROME_ERROR; op->ldpc_dec.iter_count = (uint8_t) rsp.iter_cnt; + if (op->status & (1 << RTE_BBDEV_DRV_ERROR)) + acc100_check_ir(q->d); + /* Check if this is the last desc in batch (Atomic Queue) */ if (desc->req.last_desc_in_batch) { (*aq_dequeued)++; diff --git a/drivers/baseband/acc100/rte_acc100_pmd.h b/drivers/baseband/acc100/rte_acc100_pmd.h index 38818f4f6e..1fbd96e191 100644 --- a/drivers/baseband/acc100/rte_acc100_pmd.h +++ b/drivers/baseband/acc100/rte_acc100_pmd.h @@ -565,8 +565,16 @@ struct acc100_device { rte_iova_t sw_rings_iova; /* IOVA address of sw_rings */ /* Virtual address of the info memory routed to the this function under * operation, whether it is PF or VF. + * HW may DMA information data at this location asynchronously */ + union acc100_info_ring_data *info_ring; + union acc100_harq_layout_data *harq_layout; + /* Virtual Info Ring head */ + uint16_t info_ring_head; + /* Number of bytes available for each queue in device, depending on + * how many queues are enabled with configure() + */ uint32_t sw_ring_size; uint32_t ddr_size; /* Size in kB */ uint32_t *tail_ptrs; /* Base address of response tail pointer buffer */ @@ -582,4 +590,12 @@ struct acc100_device { bool configured; /**< True if this ACC100 device is configured */ }; +/** + * Structure with details about RTE_BBDEV_EVENT_DEQUEUE event. It's passed to + * the callback function. + */ +struct acc100_deq_intr_details { + uint16_t queue_id; +}; + #endif /* _RTE_ACC100_PMD_H_ */