dpdk app can support multiple hardware dma instances. with dma skeleton, only a single instance can be configured.
This patch supports multiple driver instances per device. Signed-off-by: Sivaprasad Tummala <sivaprasad.tumm...@amd.com> --- drivers/dma/skeleton/skeleton_dmadev.c | 41 +++++++++++++++----------- 1 file changed, 24 insertions(+), 17 deletions(-) diff --git a/drivers/dma/skeleton/skeleton_dmadev.c b/drivers/dma/skeleton/skeleton_dmadev.c index d9e4f731d7..a1847571c1 100644 --- a/drivers/dma/skeleton/skeleton_dmadev.c +++ b/drivers/dma/skeleton/skeleton_dmadev.c @@ -100,6 +100,7 @@ static int skeldma_start(struct rte_dma_dev *dev) { struct skeldma_hw *hw = dev->data->dev_private; + char name[RTE_MAX_THREAD_NAME_LEN]; rte_cpuset_t cpuset; int ret; @@ -125,7 +126,8 @@ skeldma_start(struct rte_dma_dev *dev) rte_mb(); - ret = rte_ctrl_thread_create(&hw->thread, "dma_skeleton", NULL, + snprintf(name, sizeof(name), "dma_skel_%d", dev->data->dev_id); + ret = rte_ctrl_thread_create(&hw->thread, name, NULL, cpucopy_thread, dev); if (ret) { SKELDMA_LOG(ERR, "Start cpucopy thread fail!"); @@ -160,7 +162,7 @@ skeldma_stop(struct rte_dma_dev *dev) } static int -vchan_setup(struct skeldma_hw *hw, uint16_t nb_desc) +vchan_setup(struct skeldma_hw *hw, int16_t dev_id, uint16_t nb_desc) { struct skeldma_desc *desc; struct rte_ring *empty; @@ -168,8 +170,12 @@ vchan_setup(struct skeldma_hw *hw, uint16_t nb_desc) struct rte_ring *running; struct rte_ring *completed; uint16_t i; + char pool_name[RTE_RING_NAMESIZE]; + char ring_name[RTE_RING_NAMESIZE]; - desc = rte_zmalloc_socket("dma_skelteon_desc", + snprintf(pool_name, RTE_RING_NAMESIZE, "dma_skel_desc_pool_%d", + dev_id); + desc = rte_zmalloc_socket(pool_name, nb_desc * sizeof(struct skeldma_desc), RTE_CACHE_LINE_SIZE, hw->socket_id); if (desc == NULL) { @@ -177,13 +183,21 @@ vchan_setup(struct skeldma_hw *hw, uint16_t nb_desc) return -ENOMEM; } - empty = rte_ring_create("dma_skeleton_desc_empty", nb_desc, + snprintf(ring_name, RTE_RING_NAMESIZE, "dma_skel_desc_empty_%d", + dev_id); + empty = rte_ring_create(ring_name, nb_desc, hw->socket_id, RING_F_SP_ENQ | RING_F_SC_DEQ); - pending = rte_ring_create("dma_skeleton_desc_pending", nb_desc, - hw->socket_id, RING_F_SP_ENQ | RING_F_SC_DEQ); - running = rte_ring_create("dma_skeleton_desc_running", nb_desc, - hw->socket_id, RING_F_SP_ENQ | RING_F_SC_DEQ); - completed = rte_ring_create("dma_skeleton_desc_completed", nb_desc, + snprintf(ring_name, RTE_RING_NAMESIZE, "dma_skel_desc_pend_%d", + dev_id); + pending = rte_ring_create(ring_name, nb_desc, + hw->socket_id, RING_F_SP_ENQ | RING_F_SC_DEQ); + snprintf(ring_name, RTE_RING_NAMESIZE, "dma_skel_desc_run_%d", + dev_id); + running = rte_ring_create(ring_name, nb_desc, + hw->socket_id, RING_F_SP_ENQ | RING_F_SC_DEQ); + snprintf(ring_name, RTE_RING_NAMESIZE, "dma_skel_desc_comp_%d", + dev_id); + completed = rte_ring_create(ring_name, nb_desc, hw->socket_id, RING_F_SP_ENQ | RING_F_SC_DEQ); if (empty == NULL || pending == NULL || running == NULL || completed == NULL) { @@ -254,7 +268,7 @@ skeldma_vchan_setup(struct rte_dma_dev *dev, uint16_t vchan, } vchan_release(hw); - return vchan_setup(hw, conf->nb_desc); + return vchan_setup(hw, dev->data->dev_id, conf->nb_desc); } static int @@ -548,13 +562,6 @@ skeldma_probe(struct rte_vdev_device *vdev) return -EINVAL; } - /* More than one instance is not supported */ - if (skeldma_count > 0) { - SKELDMA_LOG(ERR, "Multiple instance not supported for %s", - name); - return -EINVAL; - } - skeldma_parse_vdev_args(vdev, &lcore_id); ret = skeldma_create(name, vdev, lcore_id); -- 2.17.1