baseband/acc200: support interrupt
Added support for capability and functions for MSI/MSI-X interrupt and underlying information ring. Signed-off-by: Nicolas Chautru <nicolas.chautru@intel.com> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
This commit is contained in:
Nicolas Chautru
Akhil Goyal
parent
437e396414
commit
3cabc8eaf5
@ -211,6 +211,149 @@ fetch_acc200_config(struct rte_bbdev *dev)
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acc_conf->q_fft.aq_depth_log2);
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}
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/* Checks PF Info Ring to find the interrupt cause and handles it accordingly. */
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static inline void
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acc200_check_ir(struct acc_device *acc200_dev)
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{
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volatile union acc_info_ring_data *ring_data;
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uint16_t info_ring_head = acc200_dev->info_ring_head;
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if (unlikely(acc200_dev->info_ring == NULL))
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return;
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ring_data = acc200_dev->info_ring + (acc200_dev->info_ring_head & ACC_INFO_RING_MASK);
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while (ring_data->valid) {
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if ((ring_data->int_nb < ACC200_PF_INT_DMA_DL_DESC_IRQ) || (
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ring_data->int_nb > ACC200_PF_INT_DMA_DL5G_DESC_IRQ)) {
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rte_bbdev_log(WARNING, "InfoRing: ITR:%d Info:0x%x",
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ring_data->int_nb, ring_data->detailed_info);
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/* Initialize Info Ring entry and move forward. */
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ring_data->val = 0;
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}
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info_ring_head++;
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ring_data = acc200_dev->info_ring + (info_ring_head & ACC_INFO_RING_MASK);
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}
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}
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/* Interrupt handler triggered by ACC200 dev for handling specific interrupt. */
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static void
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acc200_dev_interrupt_handler(void *cb_arg)
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{
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struct rte_bbdev *dev = cb_arg;
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struct acc_device *acc200_dev = dev->data->dev_private;
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volatile union acc_info_ring_data *ring_data;
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struct acc_deq_intr_details deq_intr_det;
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ring_data = acc200_dev->info_ring + (acc200_dev->info_ring_head & ACC_INFO_RING_MASK);
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while (ring_data->valid) {
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if (acc200_dev->pf_device) {
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rte_bbdev_log_debug(
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"ACC200 PF Interrupt received, Info Ring data: 0x%x -> %d",
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ring_data->val, ring_data->int_nb);
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switch (ring_data->int_nb) {
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case ACC200_PF_INT_DMA_DL_DESC_IRQ:
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case ACC200_PF_INT_DMA_UL_DESC_IRQ:
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case ACC200_PF_INT_DMA_FFT_DESC_IRQ:
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case ACC200_PF_INT_DMA_UL5G_DESC_IRQ:
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case ACC200_PF_INT_DMA_DL5G_DESC_IRQ:
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deq_intr_det.queue_id = get_queue_id_from_ring_info(
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dev->data, *ring_data);
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if (deq_intr_det.queue_id == UINT16_MAX) {
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rte_bbdev_log(ERR,
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"Couldn't find queue: aq_id: %u, qg_id: %u, vf_id: %u",
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ring_data->aq_id,
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ring_data->qg_id,
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ring_data->vf_id);
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return;
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}
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rte_bbdev_pmd_callback_process(dev,
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RTE_BBDEV_EVENT_DEQUEUE, &deq_intr_det);
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break;
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default:
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rte_bbdev_pmd_callback_process(dev, RTE_BBDEV_EVENT_ERROR, NULL);
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break;
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}
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} else {
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rte_bbdev_log_debug(
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"ACC200 VF Interrupt received, Info Ring data: 0x%x\n",
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ring_data->val);
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switch (ring_data->int_nb) {
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case ACC200_VF_INT_DMA_DL_DESC_IRQ:
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case ACC200_VF_INT_DMA_UL_DESC_IRQ:
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case ACC200_VF_INT_DMA_FFT_DESC_IRQ:
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case ACC200_VF_INT_DMA_UL5G_DESC_IRQ:
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case ACC200_VF_INT_DMA_DL5G_DESC_IRQ:
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/* VFs are not aware of their vf_id - it's set to 0. */
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ring_data->vf_id = 0;
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deq_intr_det.queue_id = get_queue_id_from_ring_info(
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dev->data, *ring_data);
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if (deq_intr_det.queue_id == UINT16_MAX) {
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rte_bbdev_log(ERR,
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"Couldn't find queue: aq_id: %u, qg_id: %u",
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ring_data->aq_id,
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ring_data->qg_id);
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return;
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}
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rte_bbdev_pmd_callback_process(dev,
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RTE_BBDEV_EVENT_DEQUEUE, &deq_intr_det);
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break;
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default:
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rte_bbdev_pmd_callback_process(dev, RTE_BBDEV_EVENT_ERROR, NULL);
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break;
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}
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}
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/* Initialize Info Ring entry and move forward. */
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ring_data->val = 0;
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++acc200_dev->info_ring_head;
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ring_data = acc200_dev->info_ring +
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(acc200_dev->info_ring_head & ACC_INFO_RING_MASK);
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}
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}
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/* Allocate and setup inforing. */
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static int
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allocate_info_ring(struct rte_bbdev *dev)
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{
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struct acc_device *d = dev->data->dev_private;
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const struct acc200_registry_addr *reg_addr;
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rte_iova_t info_ring_iova;
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uint32_t phys_low, phys_high;
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if (d->info_ring != NULL)
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return 0; /* Already configured. */
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/* Choose correct registry addresses for the device type. */
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if (d->pf_device)
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reg_addr = &pf_reg_addr;
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else
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reg_addr = &vf_reg_addr;
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/* Allocate InfoRing */
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d->info_ring = rte_zmalloc_socket("Info Ring", ACC_INFO_RING_NUM_ENTRIES *
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sizeof(*d->info_ring), RTE_CACHE_LINE_SIZE, dev->data->socket_id);
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if (d->info_ring == NULL) {
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rte_bbdev_log(ERR,
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"Failed to allocate Info Ring for %s:%u",
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dev->device->driver->name,
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dev->data->dev_id);
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return -ENOMEM;
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}
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info_ring_iova = rte_malloc_virt2iova(d->info_ring);
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/* Setup Info Ring. */
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phys_high = (uint32_t)(info_ring_iova >> 32);
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phys_low = (uint32_t)(info_ring_iova);
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acc_reg_write(d, reg_addr->info_ring_hi, phys_high);
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acc_reg_write(d, reg_addr->info_ring_lo, phys_low);
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acc_reg_write(d, reg_addr->info_ring_en, ACC200_REG_IRQ_EN_ALL);
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d->info_ring_head = (acc_reg_read(d, reg_addr->info_ring_ptr) &
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0xFFF) / sizeof(union acc_info_ring_data);
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return 0;
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}
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/* Allocate 64MB memory used for all software rings. */
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static int
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acc200_setup_queues(struct rte_bbdev *dev, uint16_t num_queues, int socket_id)
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@ -319,6 +462,14 @@ acc200_setup_queues(struct rte_bbdev *dev, uint16_t num_queues, int socket_id)
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acc_reg_write(d, reg_addr->tail_ptrs_fft_hi, phys_high);
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acc_reg_write(d, reg_addr->tail_ptrs_fft_lo, phys_low);
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ret = allocate_info_ring(dev);
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if (ret < 0) {
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rte_bbdev_log(ERR, "Failed to allocate info_ring for %s:%u",
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dev->device->driver->name,
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dev->data->dev_id);
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/* Continue */
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}
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if (d->harq_layout == NULL)
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d->harq_layout = rte_zmalloc_socket("HARQ Layout",
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ACC_HARQ_LAYOUT * sizeof(*d->harq_layout),
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@ -349,17 +500,120 @@ acc200_setup_queues(struct rte_bbdev *dev, uint16_t num_queues, int socket_id)
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return ret;
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}
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static int
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acc200_intr_enable(struct rte_bbdev *dev)
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{
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int ret;
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struct acc_device *d = dev->data->dev_private;
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/*
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* MSI/MSI-X are supported.
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* Option controlled by vfio-intr through EAL parameter.
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*/
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if (rte_intr_type_get(dev->intr_handle) == RTE_INTR_HANDLE_VFIO_MSI) {
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ret = allocate_info_ring(dev);
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if (ret < 0) {
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rte_bbdev_log(ERR,
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"Couldn't allocate info ring for device: %s",
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dev->data->name);
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return ret;
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}
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ret = rte_intr_enable(dev->intr_handle);
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if (ret < 0) {
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rte_bbdev_log(ERR,
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"Couldn't enable interrupts for device: %s",
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dev->data->name);
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rte_free(d->info_ring);
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return ret;
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}
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ret = rte_intr_callback_register(dev->intr_handle,
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acc200_dev_interrupt_handler, dev);
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if (ret < 0) {
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rte_bbdev_log(ERR,
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"Couldn't register interrupt callback for device: %s",
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dev->data->name);
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rte_free(d->info_ring);
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return ret;
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}
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return 0;
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} else if (rte_intr_type_get(dev->intr_handle) == RTE_INTR_HANDLE_VFIO_MSIX) {
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int i, max_queues;
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struct acc_device *acc200_dev = dev->data->dev_private;
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ret = allocate_info_ring(dev);
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if (ret < 0) {
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rte_bbdev_log(ERR,
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"Couldn't allocate info ring for device: %s",
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dev->data->name);
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return ret;
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}
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if (acc200_dev->pf_device)
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max_queues = ACC200_MAX_PF_MSIX;
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else
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max_queues = ACC200_MAX_VF_MSIX;
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if (rte_intr_efd_enable(dev->intr_handle, max_queues)) {
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rte_bbdev_log(ERR, "Failed to create fds for %u queues",
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dev->data->num_queues);
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return -1;
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}
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for (i = 0; i < max_queues; ++i) {
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if (rte_intr_efds_index_set(dev->intr_handle, i,
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rte_intr_fd_get(dev->intr_handle)))
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return -rte_errno;
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}
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if (rte_intr_vec_list_alloc(dev->intr_handle, "intr_vec",
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dev->data->num_queues)) {
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rte_bbdev_log(ERR, "Failed to allocate %u vectors",
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dev->data->num_queues);
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return -ENOMEM;
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}
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ret = rte_intr_enable(dev->intr_handle);
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if (ret < 0) {
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rte_bbdev_log(ERR,
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"Couldn't enable interrupts for device: %s",
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dev->data->name);
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rte_free(d->info_ring);
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return ret;
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}
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ret = rte_intr_callback_register(dev->intr_handle,
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acc200_dev_interrupt_handler, dev);
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if (ret < 0) {
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rte_bbdev_log(ERR,
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"Couldn't register interrupt callback for device: %s",
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dev->data->name);
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rte_free(d->info_ring);
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return ret;
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}
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return 0;
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}
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rte_bbdev_log(ERR, "ACC200 (%s) supports only VFIO MSI/MSI-X interrupts\n",
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dev->data->name);
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return -ENOTSUP;
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}
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/* Free memory used for software rings. */
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static int
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acc200_dev_close(struct rte_bbdev *dev)
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{
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struct acc_device *d = dev->data->dev_private;
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acc200_check_ir(d);
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if (d->sw_rings_base != NULL) {
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rte_free(d->tail_ptrs);
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rte_free(d->info_ring);
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rte_free(d->sw_rings_base);
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rte_free(d->harq_layout);
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d->sw_rings_base = NULL;
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d->tail_ptrs = NULL;
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d->info_ring = NULL;
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d->sw_rings_base = NULL;
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d->harq_layout = NULL;
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}
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/* Ensure all in flight HW transactions are completed. */
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@ -662,6 +916,7 @@ acc200_dev_info_get(struct rte_bbdev *dev,
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RTE_BBDEV_TURBO_CONTINUE_CRC_MATCH |
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RTE_BBDEV_TURBO_SOFT_OUTPUT |
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RTE_BBDEV_TURBO_EARLY_TERMINATION |
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RTE_BBDEV_TURBO_DEC_INTERRUPTS |
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RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN |
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RTE_BBDEV_TURBO_NEG_LLR_1_BIT_SOFT_OUT |
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RTE_BBDEV_TURBO_MAP_DEC |
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@ -683,6 +938,7 @@ acc200_dev_info_get(struct rte_bbdev *dev,
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RTE_BBDEV_TURBO_CRC_24B_ATTACH |
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RTE_BBDEV_TURBO_RV_INDEX_BYPASS |
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RTE_BBDEV_TURBO_RATE_MATCH |
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RTE_BBDEV_TURBO_ENC_INTERRUPTS |
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RTE_BBDEV_TURBO_ENC_SCATTER_GATHER,
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.num_buffers_src =
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RTE_BBDEV_TURBO_MAX_CODE_BLOCKS,
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@ -696,7 +952,8 @@ acc200_dev_info_get(struct rte_bbdev *dev,
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.capability_flags =
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RTE_BBDEV_LDPC_RATE_MATCH |
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RTE_BBDEV_LDPC_CRC_24B_ATTACH |
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RTE_BBDEV_LDPC_INTERLEAVER_BYPASS,
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RTE_BBDEV_LDPC_INTERLEAVER_BYPASS |
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RTE_BBDEV_LDPC_ENC_INTERRUPTS,
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.num_buffers_src =
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RTE_BBDEV_LDPC_MAX_CODE_BLOCKS,
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.num_buffers_dst =
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@ -717,7 +974,8 @@ acc200_dev_info_get(struct rte_bbdev *dev,
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RTE_BBDEV_LDPC_DEINTERLEAVER_BYPASS |
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RTE_BBDEV_LDPC_DEC_SCATTER_GATHER |
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RTE_BBDEV_LDPC_HARQ_6BIT_COMPRESSION |
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RTE_BBDEV_LDPC_LLR_COMPRESSION,
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RTE_BBDEV_LDPC_LLR_COMPRESSION |
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RTE_BBDEV_LDPC_DEC_INTERRUPTS,
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.llr_size = 8,
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.llr_decimals = 1,
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.num_buffers_src =
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@ -785,15 +1043,46 @@ acc200_dev_info_get(struct rte_bbdev *dev,
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dev_info->min_alignment = 1;
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dev_info->capabilities = bbdev_capabilities;
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dev_info->harq_buffer_size = 0;
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acc200_check_ir(d);
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}
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static int
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acc200_queue_intr_enable(struct rte_bbdev *dev, uint16_t queue_id)
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{
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struct acc_queue *q = dev->data->queues[queue_id].queue_private;
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if (rte_intr_type_get(dev->intr_handle) != RTE_INTR_HANDLE_VFIO_MSI &&
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rte_intr_type_get(dev->intr_handle) != RTE_INTR_HANDLE_VFIO_MSIX)
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return -ENOTSUP;
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q->irq_enable = 1;
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return 0;
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}
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static int
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acc200_queue_intr_disable(struct rte_bbdev *dev, uint16_t queue_id)
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{
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struct acc_queue *q = dev->data->queues[queue_id].queue_private;
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if (rte_intr_type_get(dev->intr_handle) != RTE_INTR_HANDLE_VFIO_MSI &&
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rte_intr_type_get(dev->intr_handle) != RTE_INTR_HANDLE_VFIO_MSIX)
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return -ENOTSUP;
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q->irq_enable = 0;
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return 0;
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}
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static const struct rte_bbdev_ops acc200_bbdev_ops = {
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.setup_queues = acc200_setup_queues,
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.intr_enable = acc200_intr_enable,
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.close = acc200_dev_close,
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.info_get = acc200_dev_info_get,
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.queue_setup = acc200_queue_setup,
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.queue_release = acc200_queue_release,
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.queue_stop = acc200_queue_stop,
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.queue_intr_enable = acc200_queue_intr_enable,
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.queue_intr_disable = acc200_queue_intr_disable
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};
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/* ACC200 PCI PF address map. */
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@ -2430,6 +2719,7 @@ dequeue_dec_one_op_cb(struct rte_bbdev_queue_data *q_data,
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if (op->status != 0) {
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/* These errors are not expected. */
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q_data->queue_stats.dequeue_err_count++;
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acc200_check_ir(q->d);
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}
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/* CRC invalid if error exists. */
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@ -2494,6 +2784,9 @@ dequeue_ldpc_dec_one_op_cb(struct rte_bbdev_queue_data *q_data,
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op->ldpc_dec.iter_count = (uint8_t) rsp.iter_cnt;
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if (op->status & (1 << RTE_BBDEV_DRV_ERROR))
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acc200_check_ir(q->d);
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/* Check if this is the last desc in batch (Atomic Queue). */
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if (desc->req.last_desc_in_batch) {
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(*aq_dequeued)++;
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@ -2927,6 +3220,9 @@ dequeue_fft_one_op(struct rte_bbdev_queue_data *q_data,
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if (op->status != 0)
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q_data->queue_stats.dequeue_err_count++;
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if (op->status & (1 << RTE_BBDEV_DRV_ERROR))
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acc200_check_ir(q->d);
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/* Check if this is the last desc in batch (Atomic Queue). */
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if (desc->req.last_desc_in_batch) {
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(*aq_dequeued)++;
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