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From: Nipun Gupta <nipun.gupta@nxp.com>
To: shreyansh.jain@nxp.com,
thomas@monjalon.net,
hemant.agrawal@nxp.com
Cc: dev@dpdk.org,
Nipun Gupta <nipun.gupta@nxp.com>
Date: Fri, 20 Apr 2018 09:34:20 +0530
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Subject: [dpdk-dev] [PATCH 7/9 v2] raw/dpaa2_qdma: support enq and deq
operations
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Signed-off-by: Nipun Gupta <nipun.gupta@nxp.com>
---
drivers/raw/dpaa2_qdma/dpaa2_qdma.c | 332 +++++++++++++++++++++
drivers/raw/dpaa2_qdma/dpaa2_qdma.h | 21 ++
drivers/raw/dpaa2_qdma/rte_pmd_dpaa2_qdma.h | 70 +++++
.../raw/dpaa2_qdma/rte_pmd_dpaa2_qdma_version.map | 4 +
4 files changed, 427 insertions(+)
diff --git a/drivers/raw/dpaa2_qdma/dpaa2_qdma.c b/drivers/raw/dpaa2_qdma/dpaa2_qdma.c
index 2325a8d..df5fe7c 100644
--- a/drivers/raw/dpaa2_qdma/dpaa2_qdma.c
+++ b/drivers/raw/dpaa2_qdma/dpaa2_qdma.c
@@ -344,6 +344,338 @@
return i;
}
+static void
+dpaa2_qdma_populate_fle(struct qbman_fle *fle,
+ uint64_t src, uint64_t dest,
+ size_t len, uint32_t flags)
+{
+ struct qdma_sdd *sdd;
+
+ DPAA2_QDMA_FUNC_TRACE();
+
+ sdd = (struct qdma_sdd *)((uint8_t *)(fle) +
+ (DPAA2_QDMA_MAX_FLE * sizeof(struct qbman_fle)));
+
+ /* first frame list to source descriptor */
+ DPAA2_SET_FLE_ADDR(fle, DPAA2_VADDR_TO_IOVA(sdd));
+ DPAA2_SET_FLE_LEN(fle, (2 * (sizeof(struct qdma_sdd))));
+
+ /* source and destination descriptor */
+ DPAA2_SET_SDD_RD_COHERENT(sdd); /* source descriptor CMD */
+ sdd++;
+ DPAA2_SET_SDD_WR_COHERENT(sdd); /* dest descriptor CMD */
+
+ fle++;
+ /* source frame list to source buffer */
+ if (flags & RTE_QDMA_JOB_SRC_PHY) {
+ DPAA2_SET_FLE_ADDR(fle, src);
+ DPAA2_SET_FLE_BMT(fle);
+ } else {
+ DPAA2_SET_FLE_ADDR(fle, DPAA2_VADDR_TO_IOVA(src));
+ }
+ DPAA2_SET_FLE_LEN(fle, len);
+
+ fle++;
+ /* destination frame list to destination buffer */
+ if (flags & RTE_QDMA_JOB_DEST_PHY) {
+ DPAA2_SET_FLE_BMT(fle);
+ DPAA2_SET_FLE_ADDR(fle, dest);
+ } else {
+ DPAA2_SET_FLE_ADDR(fle, DPAA2_VADDR_TO_IOVA(dest));
+ }
+ DPAA2_SET_FLE_LEN(fle, len);
+
+ /* Final bit: 1, for last frame list */
+ DPAA2_SET_FLE_FIN(fle);
+}
+
+static int
+dpdmai_dev_enqueue(struct dpaa2_dpdmai_dev *dpdmai_dev,
+ uint16_t txq_id,
+ uint16_t vq_id,
+ struct rte_qdma_job *job)
+{
+ struct qdma_io_meta *io_meta;
+ struct qbman_fd fd = {};
+ struct dpaa2_queue *txq;
+ struct qbman_fle *fle;
+ struct qbman_eq_desc eqdesc;
+ struct qbman_swp *swp;
+ int ret;
+
+ DPAA2_QDMA_FUNC_TRACE();
+
+ if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
+ ret = dpaa2_affine_qbman_swp();
+ if (ret) {
+ DPAA2_QDMA_ERR("Failure in affining portal");
+ return 0;
+ }
+ }
+ swp = DPAA2_PER_LCORE_PORTAL;
+
+ txq = &(dpdmai_dev->tx_queue[txq_id]);
+
+ /* Prepare enqueue descriptor */
+ qbman_eq_desc_clear(&eqdesc);
+ qbman_eq_desc_set_fq(&eqdesc, txq->fqid);
+ qbman_eq_desc_set_no_orp(&eqdesc, 0);
+ qbman_eq_desc_set_response(&eqdesc, 0, 0);
+
+ /*
+ * Get an FLE/SDD from FLE pool.
+ * Note: IO metadata is before the FLE and SDD memory.
+ */
+ ret = rte_mempool_get(qdma_dev.fle_pool, (void **)(&io_meta));
+ if (ret) {
+ DPAA2_QDMA_DP_WARN("Memory alloc failed for FLE");
+ return ret;
+ }
+
+ /* Set the metadata */
+ io_meta->cnxt = (size_t)job;
+ io_meta->id = vq_id;
+
+ fle = (struct qbman_fle *)(io_meta + 1);
+
+ /* populate Frame descriptor */
+ DPAA2_SET_FD_ADDR(&fd, DPAA2_VADDR_TO_IOVA(fle));
+ DPAA2_SET_FD_COMPOUND_FMT(&fd);
+ DPAA2_SET_FD_FRC(&fd, QDMA_SER_CTX);
+
+ /* Populate FLE */
+ memset(fle, 0, QDMA_FLE_POOL_SIZE);
+ dpaa2_qdma_populate_fle(fle, job->src, job->dest, job->len, job->flags);
+
+ /* Enqueue the packet to the QBMAN */
+ do {
+ ret = qbman_swp_enqueue_multiple(swp, &eqdesc, &fd, NULL, 1);
+ if (ret < 0 && ret != -EBUSY)
+ DPAA2_QDMA_ERR("Transmit failure with err: %d", ret);
+ } while (ret == -EBUSY);
+
+ DPAA2_QDMA_DP_DEBUG("Successfully transmitted a packet");
+
+ return ret;
+}
+
+int
+rte_qdma_vq_enqueue_multi(uint16_t vq_id,
+ struct rte_qdma_job **job,
+ uint16_t nb_jobs)
+{
+ int i, ret;
+
+ DPAA2_QDMA_FUNC_TRACE();
+
+ for (i = 0; i < nb_jobs; i++) {
+ ret = rte_qdma_vq_enqueue(vq_id, job[i]);
+ if (ret < 0)
+ break;
+ }
+
+ return i;
+}
+
+int
+rte_qdma_vq_enqueue(uint16_t vq_id,
+ struct rte_qdma_job *job)
+{
+ struct qdma_virt_queue *qdma_vq = &qdma_vqs[vq_id];
+ struct qdma_hw_queue *qdma_pq = qdma_vq->hw_queue;
+ struct dpaa2_dpdmai_dev *dpdmai_dev = qdma_pq->dpdmai_dev;
+ int ret;
+
+ DPAA2_QDMA_FUNC_TRACE();
+
+ /* Return error in case of wrong lcore_id */
+ if (rte_lcore_id() != qdma_vq->lcore_id) {
+ DPAA2_QDMA_ERR("QDMA enqueue for vqid %d on wrong core",
+ vq_id);
+ return -EINVAL;
+ }
+
+ ret = dpdmai_dev_enqueue(dpdmai_dev, qdma_pq->queue_id, vq_id, job);
+ if (ret < 0) {
+ DPAA2_QDMA_ERR("DPDMAI device enqueue failed: %d", ret);
+ return ret;
+ }
+
+ qdma_vq->num_enqueues++;
+
+ return 1;
+}
+
+/* Function to receive a QDMA job for a given device and queue*/
+static int
+dpdmai_dev_dequeue(struct dpaa2_dpdmai_dev *dpdmai_dev,
+ uint16_t rxq_id,
+ uint16_t *vq_id,
+ struct rte_qdma_job **job)
+{
+ struct qdma_io_meta *io_meta;
+ struct dpaa2_queue *rxq;
+ struct qbman_result *dq_storage;
+ struct qbman_pull_desc pulldesc;
+ const struct qbman_fd *fd;
+ struct qbman_swp *swp;
+ struct qbman_fle *fle;
+ uint32_t fqid;
+ uint8_t status;
+ int ret;
+
+ DPAA2_QDMA_FUNC_TRACE();
+
+ if (unlikely(!DPAA2_PER_LCORE_DPIO)) {
+ ret = dpaa2_affine_qbman_swp();
+ if (ret) {
+ DPAA2_QDMA_ERR("Failure in affining portal");
+ return 0;
+ }
+ }
+ swp = DPAA2_PER_LCORE_PORTAL;
+
+ rxq = &(dpdmai_dev->rx_queue[rxq_id]);
+ dq_storage = rxq->q_storage->dq_storage[0];
+ fqid = rxq->fqid;
+
+ /* Prepare dequeue descriptor */
+ qbman_pull_desc_clear(&pulldesc);
+ qbman_pull_desc_set_fq(&pulldesc, fqid);
+ qbman_pull_desc_set_storage(&pulldesc, dq_storage,
+ (dma_addr_t)(DPAA2_VADDR_TO_IOVA(dq_storage)), 1);
+ qbman_pull_desc_set_numframes(&pulldesc, 1);
+
+ while (1) {
+ if (qbman_swp_pull(swp, &pulldesc)) {
+ DPAA2_QDMA_DP_WARN("VDQ command not issued. QBMAN busy");
+ continue;
+ }
+ break;
+ }
+
+ /* Check if previous issued command is completed. */
+ while (!qbman_check_command_complete(dq_storage))
+ ;
+ /* Loop until dq_storage is updated with new token by QBMAN */
+ while (!qbman_check_new_result(dq_storage))
+ ;
+
+ /* Check for valid frame. */
+ status = qbman_result_DQ_flags(dq_storage);
+ if (unlikely((status & QBMAN_DQ_STAT_VALIDFRAME) == 0)) {
+ DPAA2_QDMA_DP_DEBUG("No frame is delivered");
+ return 0;
+ }
+
+ /* Get the FD */
+ fd = qbman_result_DQ_fd(dq_storage);
+
+ /*
+ * Fetch metadata from FLE. job and vq_id were set
+ * in metadata in the enqueue operation.
+ */
+ fle = DPAA2_IOVA_TO_VADDR(DPAA2_GET_FD_ADDR(fd));
+ io_meta = (struct qdma_io_meta *)(fle) - 1;
+ if (vq_id)
+ *vq_id = io_meta->id;
+
+ *job = (struct rte_qdma_job *)(size_t)io_meta->cnxt;
+ (*job)->status = DPAA2_GET_FD_ERR(fd);
+
+ /* Free FLE to the pool */
+ rte_mempool_put(qdma_dev.fle_pool, io_meta);
+
+ DPAA2_QDMA_DP_DEBUG("packet received");
+
+ return 1;
+}
+
+int
+rte_qdma_vq_dequeue_multi(uint16_t vq_id,
+ struct rte_qdma_job **job,
+ uint16_t nb_jobs)
+{
+ int i;
+
+ DPAA2_QDMA_FUNC_TRACE();
+
+ for (i = 0; i < nb_jobs; i++) {
+ job[i] = rte_qdma_vq_dequeue(vq_id);
+ if (!job[i])
+ break;
+ }
+
+ return i;
+}
+
+struct rte_qdma_job *
+rte_qdma_vq_dequeue(uint16_t vq_id)
+{
+ struct qdma_virt_queue *qdma_vq = &qdma_vqs[vq_id];
+ struct qdma_hw_queue *qdma_pq = qdma_vq->hw_queue;
+ struct dpaa2_dpdmai_dev *dpdmai_dev = qdma_pq->dpdmai_dev;
+ struct rte_qdma_job *job = NULL;
+ struct qdma_virt_queue *temp_qdma_vq;
+ int dequeue_budget = QDMA_DEQUEUE_BUDGET;
+ int ring_count, ret, i;
+ uint16_t temp_vq_id;
+
+ DPAA2_QDMA_FUNC_TRACE();
+
+ /* Return error in case of wrong lcore_id */
+ if (rte_lcore_id() != (unsigned int)(qdma_vq->lcore_id)) {
+ DPAA2_QDMA_ERR("QDMA dequeue for vqid %d on wrong core",
+ vq_id);
+ return NULL;
+ }
+
+ /* Only dequeue when there are pending jobs on VQ */
+ if (qdma_vq->num_enqueues == qdma_vq->num_dequeues)
+ return NULL;
+
+ if (qdma_vq->exclusive_hw_queue) {
+ /* In case of exclusive queue directly fetch from HW queue */
+ ret = dpdmai_dev_dequeue(dpdmai_dev, qdma_pq->queue_id,
+ NULL, &job);
+ if (ret < 0) {
+ DPAA2_QDMA_ERR(
+ "Dequeue from DPDMAI device failed: %d", ret);
+ return NULL;
+ }
+ } else {
+ /*
+ * Get the QDMA completed jobs from the software ring.
+ * In case they are not available on the ring poke the HW
+ * to fetch completed jobs from corresponding HW queues
+ */
+ ring_count = rte_ring_count(qdma_vq->status_ring);
+ if (ring_count == 0) {
+ /* TODO - How to have right budget */
+ for (i = 0; i < dequeue_budget; i++) {
+ ret = dpdmai_dev_dequeue(dpdmai_dev,
+ qdma_pq->queue_id, &temp_vq_id, &job);
+ if (ret == 0)
+ break;
+ temp_qdma_vq = &qdma_vqs[temp_vq_id];
+ rte_ring_enqueue(temp_qdma_vq->status_ring,
+ (void *)(job));
+ ring_count = rte_ring_count(
+ qdma_vq->status_ring);
+ if (ring_count)
+ break;
+ }
+ }
+
+ /* Dequeue job from the software ring to provide to the user */
+ rte_ring_dequeue(qdma_vq->status_ring, (void **)&job);
+ if (job)
+ qdma_vq->num_dequeues++;
+ }
+
+ return job;
+}
+
void
rte_qdma_vq_stats(uint16_t vq_id,
struct rte_qdma_vq_stats *vq_status)
diff --git a/drivers/raw/dpaa2_qdma/dpaa2_qdma.h b/drivers/raw/dpaa2_qdma/dpaa2_qdma.h
index fe1da41..c6a0578 100644
--- a/drivers/raw/dpaa2_qdma/dpaa2_qdma.h
+++ b/drivers/raw/dpaa2_qdma/dpaa2_qdma.h
@@ -18,10 +18,31 @@
/** FLE pool cache size */
#define QDMA_FLE_CACHE_SIZE(_num) (_num/(RTE_MAX_LCORE * 2))
+/** Notification by FQD_CTX[fqid] */
+#define QDMA_SER_CTX (1 << 8)
+
+/**
+ * Source descriptor command read transaction type for RBP=0:
+ * coherent copy of cacheable memory
+ */
+#define DPAA2_SET_SDD_RD_COHERENT(sdd) ((sdd)->cmd = (0xb << 28))
+/**
+ * Destination descriptor command write transaction type for RBP=0:
+ * coherent copy of cacheable memory
+ */
+#define DPAA2_SET_SDD_WR_COHERENT(sdd) ((sdd)->cmd = (0x6 << 28))
+
/** Maximum possible H/W Queues on each core */
#define MAX_HW_QUEUE_PER_CORE 64
/**
+ * In case of Virtual Queue mode, this specifies the number of
+ * dequeue the 'qdma_vq_dequeue/multi' API does from the H/W Queue
+ * in case there is no job present on the Virtual Queue ring.
+ */
+#define QDMA_DEQUEUE_BUDGET 64
+
+/**
* Represents a QDMA device.
* A single QDMA device exists which is combination of multiple DPDMAI rawdev's.
*/
diff --git a/drivers/raw/dpaa2_qdma/rte_pmd_dpaa2_qdma.h b/drivers/raw/dpaa2_qdma/rte_pmd_dpaa2_qdma.h
index d27fd49..5a0ee4e 100644
--- a/drivers/raw/dpaa2_qdma/rte_pmd_dpaa2_qdma.h
+++ b/drivers/raw/dpaa2_qdma/rte_pmd_dpaa2_qdma.h
@@ -175,6 +175,76 @@ struct rte_qdma_job {
rte_qdma_vq_create(uint32_t lcore_id, uint32_t flags);
/**
+ * Enqueue multiple jobs to a Virtual Queue.
+ * If the enqueue is successful, the H/W will perform DMA operations
+ * on the basis of the QDMA jobs provided.
+ *
+ * @param vq_id
+ * Virtual Queue ID.
+ * @param job
+ * List of QDMA Jobs containing relevant information related to DMA.
+ * @param nb_jobs
+ * Number of QDMA jobs provided by the user.
+ *
+ * @returns
+ * - >=0: Number of jobs successfully submitted
+ * - <0: Error code.
+ */
+int
+rte_qdma_vq_enqueue_multi(uint16_t vq_id,
+ struct rte_qdma_job **job,
+ uint16_t nb_jobs);
+
+/**
+ * Enqueue a single job to a Virtual Queue.
+ * If the enqueue is successful, the H/W will perform DMA operations
+ * on the basis of the QDMA job provided.
+ *
+ * @param vq_id
+ * Virtual Queue ID.
+ * @param job
+ * A QDMA Job containing relevant information related to DMA.
+ *
+ * @returns
+ * - >=0: Number of jobs successfully submitted
+ * - <0: Error code.
+ */
+int
+rte_qdma_vq_enqueue(uint16_t vq_id,
+ struct rte_qdma_job *job);
+
+/**
+ * Dequeue multiple completed jobs from a Virtual Queue.
+ * Provides the list of completed jobs capped by nb_jobs.
+ *
+ * @param vq_id
+ * Virtual Queue ID.
+ * @param job
+ * List of QDMA Jobs returned from the API.
+ * @param nb_jobs
+ * Number of QDMA jobs requested for dequeue by the user.
+ *
+ * @returns
+ * Number of jobs actually dequeued.
+ */
+int
+rte_qdma_vq_dequeue_multi(uint16_t vq_id,
+ struct rte_qdma_job **job,
+ uint16_t nb_jobs);
+
+/**
+ * Dequeue a single completed jobs from a Virtual Queue.
+ *
+ * @param vq_id
+ * Virtual Queue ID.
+ *
+ * @returns
+ * - A completed job or NULL if no job is there.
+ */
+struct rte_qdma_job *
+rte_qdma_vq_dequeue(uint16_t vq_id);
+
+/**
* Get a Virtual Queue statistics.
*
* @param vq_id
diff --git a/drivers/raw/dpaa2_qdma/rte_pmd_dpaa2_qdma_version.map b/drivers/raw/dpaa2_qdma/rte_pmd_dpaa2_qdma_version.map
index 0a0d3c5..59dd27c 100644
--- a/drivers/raw/dpaa2_qdma/rte_pmd_dpaa2_qdma_version.map
+++ b/drivers/raw/dpaa2_qdma/rte_pmd_dpaa2_qdma_version.map
@@ -10,6 +10,10 @@ DPDK_18.05 {
rte_qdma_stop;
rte_qdma_vq_create;
rte_qdma_vq_destroy;
+ rte_qdma_vq_dequeue;
+ rte_qdma_vq_dequeue_multi;
+ rte_qdma_vq_enqueue;
+ rte_qdma_vq_enqueue_multi;
rte_qdma_vq_stats;
local: *;
--
1.9.1