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
