From: Nicolas Chautru <nicolas.chau...@intel.com> Adding support for capability and functions for MSI/MSI-X interrupt and underlying information ring.
Signed-off-by: Nicolas Chautru <nicolas.chau...@intel.com> --- drivers/baseband/acc200/rte_acc200_pmd.c | 346 ++++++++++++++++++++++++++++++- 1 file changed, 344 insertions(+), 2 deletions(-) diff --git a/drivers/baseband/acc200/rte_acc200_pmd.c b/drivers/baseband/acc200/rte_acc200_pmd.c index 483dce8..8fe5704 100644 --- a/drivers/baseband/acc200/rte_acc200_pmd.c +++ b/drivers/baseband/acc200/rte_acc200_pmd.c @@ -220,6 +220,193 @@ acc_conf->q_fft.aq_depth_log2); } +/* Checks PF Info Ring to find the interrupt cause and handles it accordingly */ +static inline void +acc200_check_ir(struct acc_device *acc200_dev) +{ + volatile union acc_info_ring_data *ring_data; + uint16_t info_ring_head = acc200_dev->info_ring_head; + if (acc200_dev->info_ring == NULL) + return; + + ring_data = acc200_dev->info_ring + (acc200_dev->info_ring_head & + ACC_INFO_RING_MASK); + + while (ring_data->valid) { + if ((ring_data->int_nb < ACC200_PF_INT_DMA_DL_DESC_IRQ) || ( + ring_data->int_nb > + ACC200_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 = acc200_dev->info_ring + + (info_ring_head & ACC_INFO_RING_MASK); + } +} + +/* Checks PF Info Ring to find the interrupt cause and handles it accordingly */ +static inline void +acc200_pf_interrupt_handler(struct rte_bbdev *dev) +{ + struct acc_device *acc200_dev = dev->data->dev_private; + volatile union acc_info_ring_data *ring_data; + struct acc_deq_intr_details deq_intr_det; + + ring_data = acc200_dev->info_ring + (acc200_dev->info_ring_head & + ACC_INFO_RING_MASK); + + while (ring_data->valid) { + + rte_bbdev_log_debug( + "ACC200 PF Interrupt received, Info Ring data: 0x%x -> %d", + ring_data->val, ring_data->int_nb); + + switch (ring_data->int_nb) { + case ACC200_PF_INT_DMA_DL_DESC_IRQ: + case ACC200_PF_INT_DMA_UL_DESC_IRQ: + case ACC200_PF_INT_DMA_FFT_DESC_IRQ: + case ACC200_PF_INT_DMA_UL5G_DESC_IRQ: + case ACC200_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; + ++acc200_dev->info_ring_head; + ring_data = acc200_dev->info_ring + + (acc200_dev->info_ring_head & ACC_INFO_RING_MASK); + } +} + +/* Checks VF Info Ring to find the interrupt cause and handles it accordingly */ +static inline void +acc200_vf_interrupt_handler(struct rte_bbdev *dev) +{ + struct acc_device *acc200_dev = dev->data->dev_private; + volatile union acc_info_ring_data *ring_data; + struct acc_deq_intr_details deq_intr_det; + + ring_data = acc200_dev->info_ring + (acc200_dev->info_ring_head & ACC_INFO_RING_MASK); + + while (ring_data->valid) { + + rte_bbdev_log_debug( + "ACC200 VF Interrupt received, Info Ring data: 0x%x\n", + ring_data->val); + + switch (ring_data->int_nb) { + case ACC200_VF_INT_DMA_DL_DESC_IRQ: + case ACC200_VF_INT_DMA_UL_DESC_IRQ: + case ACC200_VF_INT_DMA_FFT_DESC_IRQ: + case ACC200_VF_INT_DMA_UL5G_DESC_IRQ: + case ACC200_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; + ++acc200_dev->info_ring_head; + ring_data = acc200_dev->info_ring + (acc200_dev->info_ring_head + & ACC_INFO_RING_MASK); + } +} + +/* Interrupt handler triggered by ACC200 dev for handling specific interrupt */ +static void +acc200_dev_interrupt_handler(void *cb_arg) +{ + struct rte_bbdev *dev = cb_arg; + struct acc_device *acc200_dev = dev->data->dev_private; + + /* Read info ring */ + if (acc200_dev->pf_device) + acc200_pf_interrupt_handler(dev); + else + acc200_vf_interrupt_handler(dev); +} + +/* Allocate and setup inforing */ +static int +allocate_info_ring(struct rte_bbdev *dev) +{ + struct acc_device *d = dev->data->dev_private; + const struct acc200_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 */ + if (d->info_ring == NULL) + d->info_ring = rte_zmalloc_socket("Info Ring", + ACC_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); + acc_reg_write(d, reg_addr->info_ring_hi, phys_high); + acc_reg_write(d, reg_addr->info_ring_lo, phys_low); + acc_reg_write(d, reg_addr->info_ring_en, ACC200_REG_IRQ_EN_ALL); + d->info_ring_head = (acc_reg_read(d, reg_addr->info_ring_ptr) & + 0xFFF) / sizeof(union acc_info_ring_data); + return 0; +} + + /* Allocate 64MB memory used for all software rings */ static int acc200_setup_queues(struct rte_bbdev *dev, uint16_t num_queues, int socket_id) @@ -227,6 +414,7 @@ uint32_t phys_low, phys_high, value; struct acc_device *d = dev->data->dev_private; const struct acc200_registry_addr *reg_addr; + int ret; if (d->pf_device && !d->acc_conf.pf_mode_en) { rte_bbdev_log(NOTICE, @@ -327,6 +515,14 @@ acc_reg_write(d, reg_addr->tail_ptrs_fft_hi, phys_high); acc_reg_write(d, reg_addr->tail_ptrs_fft_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 */ + } + if (d->harq_layout == NULL) d->harq_layout = rte_zmalloc_socket("HARQ Layout", ACC_HARQ_LAYOUT * sizeof(*d->harq_layout), @@ -349,17 +545,121 @@ return 0; } +static int +acc200_intr_enable(struct rte_bbdev *dev) +{ + int ret; + struct acc_device *d = dev->data->dev_private; + /* + * MSI/MSI-X are supported + * Option controlled by vfio-intr through EAL parameter + */ + if (rte_intr_type_get(dev->intr_handle) == RTE_INTR_HANDLE_VFIO_MSI) { + + 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, + acc200_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; + } else if (rte_intr_type_get(dev->intr_handle) == RTE_INTR_HANDLE_VFIO_MSIX) { + + 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; + } + + int i, max_queues; + struct acc_device *acc200_dev = dev->data->dev_private; + + if (acc200_dev->pf_device) + max_queues = ACC200_MAX_PF_MSIX; + else + max_queues = ACC200_MAX_VF_MSIX; + + if (rte_intr_efd_enable(dev->intr_handle, max_queues)) { + rte_bbdev_log(ERR, "Failed to create fds for %u queues", + dev->data->num_queues); + return -1; + } + + for (i = 0; i < max_queues; ++i) { + if (rte_intr_efds_index_set(dev->intr_handle, i, + rte_intr_fd_get(dev->intr_handle))) + return -rte_errno; + } + + if (rte_intr_vec_list_alloc(dev->intr_handle, "intr_vec", + dev->data->num_queues)) { + rte_bbdev_log(ERR, "Failed to allocate %u vectors", + dev->data->num_queues); + return -ENOMEM; + } + + 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, + acc200_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, "ACC200 (%s) supports only VFIO MSI/MSI-X interrupts\n", + dev->data->name); + return -ENOTSUP; +} + /* Free memory used for software rings */ static int acc200_dev_close(struct rte_bbdev *dev) { struct acc_device *d = dev->data->dev_private; + acc200_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); rte_free(d->harq_layout); d->sw_rings_base = NULL; d->tail_ptrs = NULL; + d->info_ring = NULL; d->harq_layout = NULL; } /* Ensure all in flight HW transactions are completed */ @@ -652,6 +952,7 @@ RTE_BBDEV_TURBO_CONTINUE_CRC_MATCH | RTE_BBDEV_TURBO_SOFT_OUTPUT | RTE_BBDEV_TURBO_EARLY_TERMINATION | + RTE_BBDEV_TURBO_DEC_INTERRUPTS | RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN | RTE_BBDEV_TURBO_NEG_LLR_1_BIT_SOFT_OUT | RTE_BBDEV_TURBO_MAP_DEC | @@ -673,6 +974,7 @@ 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, @@ -686,7 +988,8 @@ .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 = @@ -707,7 +1010,8 @@ RTE_BBDEV_LDPC_DEINTERLEAVER_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 = @@ -775,15 +1079,46 @@ dev_info->min_alignment = 1; dev_info->capabilities = bbdev_capabilities; dev_info->harq_buffer_size = 0; + + acc200_check_ir(d); +} + +static int +acc200_queue_intr_enable(struct rte_bbdev *dev, uint16_t queue_id) +{ + struct acc_queue *q = dev->data->queues[queue_id].queue_private; + + if (rte_intr_type_get(dev->intr_handle) != RTE_INTR_HANDLE_VFIO_MSI && + rte_intr_type_get(dev->intr_handle) != RTE_INTR_HANDLE_VFIO_MSIX) + return -ENOTSUP; + + q->irq_enable = 1; + return 0; +} + +static int +acc200_queue_intr_disable(struct rte_bbdev *dev, uint16_t queue_id) +{ + struct acc_queue *q = dev->data->queues[queue_id].queue_private; + + if (rte_intr_type_get(dev->intr_handle) != RTE_INTR_HANDLE_VFIO_MSI && + rte_intr_type_get(dev->intr_handle) != RTE_INTR_HANDLE_VFIO_MSIX) + return -ENOTSUP; + + q->irq_enable = 0; + return 0; } static const struct rte_bbdev_ops acc200_bbdev_ops = { .setup_queues = acc200_setup_queues, + .intr_enable = acc200_intr_enable, .close = acc200_dev_close, .info_get = acc200_dev_info_get, .queue_setup = acc200_queue_setup, .queue_release = acc200_queue_release, .queue_stop = acc_queue_stop, + .queue_intr_enable = acc200_queue_intr_enable, + .queue_intr_disable = acc200_queue_intr_disable }; /* ACC200 PCI PF address map */ @@ -2694,6 +3029,7 @@ if (op->status != 0) { /* These errors are not expected */ q_data->queue_stats.dequeue_err_count++; + acc200_check_ir(q->d); } /* CRC invalid if error exists */ @@ -2763,6 +3099,9 @@ op->ldpc_dec.iter_count = (uint8_t) rsp.iter_cnt; + if (op->status & (1 << RTE_BBDEV_DRV_ERROR)) + acc200_check_ir(q->d); + /* Check if this is the last desc in batch (Atomic Queue) */ if (desc->req.last_desc_in_batch) { (*aq_dequeued)++; @@ -3232,6 +3571,9 @@ if (op->status != 0) q_data->queue_stats.dequeue_err_count++; + if (op->status & (1 << RTE_BBDEV_DRV_ERROR)) + acc200_check_ir(q->d); + /* Check if this is the last desc in batch (Atomic Queue) */ if (desc->req.last_desc_in_batch) { (*aq_dequeued)++; -- 1.8.3.1