618a40a0c9
If no memcopy request is completed, the ring_idx of the last completed
operation need returned by last_idx parameter. This patch fixes it.
Fixes: 05d5fc66a2 ("dma/skeleton: introduce skeleton driver")
Cc: stable@dpdk.org
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2021 HiSilicon Limited
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*/
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#ifndef SKELETON_DMADEV_H
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#define SKELETON_DMADEV_H
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#include <pthread.h>
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#include <rte_ring.h>
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#define SKELDMA_ARG_LCORE "lcore"
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struct skeldma_desc {
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void *src;
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void *dst;
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uint32_t len;
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uint16_t ridx; /* ring idx */
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};
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struct skeldma_hw {
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int lcore_id; /* cpucopy task affinity core */
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int socket_id;
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pthread_t thread; /* cpucopy task thread */
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volatile int exit_flag; /* cpucopy task exit flag */
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struct skeldma_desc *desc_mem;
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/* Descriptor ring state machine:
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*
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* ----------- enqueue without submit -----------
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* | empty |------------------------------->| pending |
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* -----------\ -----------
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* ^ \------------ |
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* | | |submit doorbell
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* | | |
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* | |enqueue with submit |
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* |get completed |------------------| |
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* | | |
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* | v v
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* ----------- cpucopy thread working -----------
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* |completed|<-------------------------------| running |
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* ----------- -----------
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*/
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struct rte_ring *desc_empty;
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struct rte_ring *desc_pending;
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struct rte_ring *desc_running;
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struct rte_ring *desc_completed;
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/* Cache delimiter for dataplane API's operation data */
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char cache1 __rte_cache_aligned;
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uint16_t ridx; /* ring idx */
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uint16_t last_ridx;
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uint64_t submitted_count;
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/* Cache delimiter for cpucopy thread's operation data */
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char cache2 __rte_cache_aligned;
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volatile uint32_t zero_req_count;
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uint64_t completed_count;
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};
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#endif /* SKELETON_DMADEV_H */
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