From: Amit Prakash Shukla <amitprakashs@marvell.com>
To: Chengwen Feng <fengchengwen@huawei.com>,
Kevin Laatz <kevin.laatz@intel.com>,
Bruce Richardson <bruce.richardson@intel.com>
Cc: dev@dpdk.org, jerinj@marvell.com, conor.walsh@intel.com,
vattunuru@marvell.com, g.singh@nxp.com,
sachin.saxena@oss.nxp.com, hemant.agrawal@nxp.com,
cheng1.jiang@intel.com, ndabilpuram@marvell.com,
anoobj@marvell.com,
"Amit Prakash Shukla" <amitprakashs@marvell.com>,
"Morten Brørup" <mb@smartsharesystems.com>
Subject: [PATCH v1 1/2] dmadev: offload to free source buffer
Date: Thu, 7 Sep 2023 13:40:39 +0530 [thread overview]
Message-ID: <20230907081040.1002478-2-amitprakashs@marvell.com> (raw)
In-Reply-To: <20230907081040.1002478-1-amitprakashs@marvell.com>
This changeset adds support in DMA library to free source DMA buffer by
hardware. On a supported hardware, application can pass on the mempool
information as part of vchan config when the DMA transfer direction is
configured as RTE_DMA_DIR_MEM_TO_DEV.
Signed-off-by: Amit Prakash Shukla <amitprakashs@marvell.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
---
lib/dmadev/rte_dmadev.h | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/lib/dmadev/rte_dmadev.h b/lib/dmadev/rte_dmadev.h
index b157ab7600..d6a685907f 100644
--- a/lib/dmadev/rte_dmadev.h
+++ b/lib/dmadev/rte_dmadev.h
@@ -278,6 +278,13 @@ int16_t rte_dma_next_dev(int16_t start_dev_id);
#define RTE_DMA_CAPA_OPS_COPY_SG RTE_BIT64(33)
/** Support fill operation. */
#define RTE_DMA_CAPA_OPS_FILL RTE_BIT64(34)
+/** Support for source buffer free for mem to dev transfer.
+ *
+ * @note Even though the DMA driver has this capability, it may not support all
+ * mempool drivers. If the mempool is not supported by the DMA driver,
+ * rte_dma_vchan_setup() will fail.
+ **/
+#define RTE_DMA_CAPA_MEM_TO_DEV_SOURCE_BUFFER_FREE RTE_BIT64(35)
/**@}*/
/**
@@ -581,6 +588,19 @@ struct rte_dma_vchan_conf {
* @see struct rte_dma_port_param
*/
struct rte_dma_port_param dst_port;
+ /** mempool from which source buffer is allocated. mempool info is used
+ * for freeing source buffer by hardware when configured direction is
+ * RTE_DMA_DIR_MEM_TO_DEV. To free the source buffer by hardware,
+ * RTE_DMA_OP_FLAG_FREE_SBUF must be set while calling rte_dma_copy and
+ * rte_dma_copy_sg().
+ *
+ * @note If the mempool is not supported by the DMA driver,
+ * rte_dma_vchan_setup() will fail.
+ *
+ * @see RTE_DMA_OP_FLAG_FREE_SBUF
+ */
+ struct rte_mempool *mem_to_dev_src_buf_pool;
+
};
/**
@@ -818,6 +838,13 @@ struct rte_dma_sge {
* capability bit for this, driver should not return error if this flag was set.
*/
#define RTE_DMA_OP_FLAG_LLC RTE_BIT64(2)
+/** Mem to dev source buffer free flag.
+ * Used for freeing source DMA buffer by hardware when the transfer direction is
+ * configured as RTE_DMA_DIR_MEM_TO_DEV.
+ *
+ * @see struct rte_dma_vchan_conf::mem_to_dev_src_buf_pool
+ */
+#define RTE_DMA_OP_FLAG_FREE_SBUF RTE_BIT64(3)
/**@}*/
/**
--
2.25.1
next prev parent reply other threads:[~2023-09-07 8:11 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-07 8:10 [PATCH v1 0/2] offload support to free dma " Amit Prakash Shukla
2023-09-07 8:10 ` Amit Prakash Shukla [this message]
2023-09-07 9:00 ` [PATCH v1 1/2] dmadev: offload to free " Amit Prakash Shukla
2023-09-18 11:12 ` Anoob Joseph
2023-09-07 8:10 ` [PATCH v1 2/2] test/dma: add source buffer offload free test Amit Prakash Shukla
2023-09-19 11:48 ` Anoob Joseph
2023-09-26 8:11 ` Amit Prakash Shukla
2023-09-26 12:17 ` [PATCH v2 0/2] offload support to free dma source buffer Amit Prakash Shukla
2023-09-26 12:17 ` [PATCH v2 1/2] dmadev: offload to free " Amit Prakash Shukla
2023-09-26 12:17 ` [PATCH v2 2/2] test/dma: add source buffer offload free test Amit Prakash Shukla
2023-09-28 11:50 ` [PATCH v3 0/2] offload support to free dma source buffer Amit Prakash Shukla
2023-09-28 11:50 ` [PATCH v3 1/2] dmadev: offload to free " Amit Prakash Shukla
2023-10-07 9:00 ` fengchengwen
2023-10-09 7:00 ` [EXT] " Amit Prakash Shukla
2023-10-09 8:59 ` fengchengwen
2023-10-09 12:01 ` Amit Prakash Shukla
2023-09-28 11:50 ` [PATCH v3 2/2] test/dma: add source buffer offload free test Amit Prakash Shukla
2023-09-28 12:08 ` Anoob Joseph
2023-10-07 9:32 ` fengchengwen
2023-10-09 7:07 ` [EXT] " Amit Prakash Shukla
2023-09-28 11:59 ` [PATCH v3 0/2] offload support to free dma source buffer Anoob Joseph
2023-10-05 7:21 ` Amit Prakash Shukla
2023-10-09 12:02 ` [PATCH v4 0/2] offload support to auto free dma buffer Amit Prakash Shukla
2023-10-09 12:02 ` [PATCH v4 1/2] dmadev: offload to auto free DMA buffer Amit Prakash Shukla
2023-10-10 1:40 ` fengchengwen
2023-10-16 11:28 ` [EXT] " Amit Prakash Shukla
2023-10-09 12:02 ` [PATCH v4 2/2] test/dma: auto free offload test to " Amit Prakash Shukla
2023-10-17 8:47 ` [PATCH v4 0/2] offload support to auto free dma buffer Thomas Monjalon
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