diff mbox series

[v21,3/7] dmadev: introduce DMA device library PMD header

Message ID 20210907125649.49794-4-fengchengwen@huawei.com (mailing list archive)
State Superseded, archived
Delegated to: Thomas Monjalon
Headers
Series support dmadev |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

fengchengwen Sept. 7, 2021, 12:56 p.m. UTC 
This patch introduce DMA device library PMD header which was driver
facing APIs for a DMA device.

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Morten Brørup <mb@smartsharesystems.com>
Reviewed-by: Kevin Laatz <kevin.laatz@intel.com>
Reviewed-by: Conor Walsh <conor.walsh@intel.com>
---
 lib/dmadev/meson.build      |  1 +
 lib/dmadev/rte_dmadev.h     |  2 ++
 lib/dmadev/rte_dmadev_pmd.h | 72 +++++++++++++++++++++++++++++++++++++
 lib/dmadev/version.map      | 10 ++++++
 4 files changed, 85 insertions(+)
 create mode 100644 lib/dmadev/rte_dmadev_pmd.h
diff mbox series

Patch

diff --git a/lib/dmadev/meson.build b/lib/dmadev/meson.build
index f421ec1909..833baf7d54 100644
--- a/lib/dmadev/meson.build
+++ b/lib/dmadev/meson.build
@@ -3,3 +3,4 @@ 
 
 headers = files('rte_dmadev.h')
 indirect_headers += files('rte_dmadev_core.h')
+driver_sdk_headers += files('rte_dmadev_pmd.h')
diff --git a/lib/dmadev/rte_dmadev.h b/lib/dmadev/rte_dmadev.h
index 76d71615eb..c8dd0009f5 100644
--- a/lib/dmadev/rte_dmadev.h
+++ b/lib/dmadev/rte_dmadev.h
@@ -730,6 +730,8 @@  struct rte_dmadev_sge {
 	uint32_t length; /**< The DMA operation length. */
 };
 
+#include "rte_dmadev_core.h"
+
 /* DMA flags to augment operation preparation. */
 #define RTE_DMA_OP_FLAG_FENCE	(1ull << 0)
 /**< DMA fence flag.
diff --git a/lib/dmadev/rte_dmadev_pmd.h b/lib/dmadev/rte_dmadev_pmd.h
new file mode 100644
index 0000000000..45141f9dc1
--- /dev/null
+++ b/lib/dmadev/rte_dmadev_pmd.h
@@ -0,0 +1,72 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2021 HiSilicon Limited.
+ */
+
+#ifndef _RTE_DMADEV_PMD_H_
+#define _RTE_DMADEV_PMD_H_
+
+/**
+ * @file
+ *
+ * RTE DMA Device PMD APIs
+ *
+ * Driver facing APIs for a DMA device. These are not to be called directly by
+ * any application.
+ */
+
+#include "rte_dmadev.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @internal
+ * Allocates a new dmadev slot for an DMA device and returns the pointer
+ * to that slot for the driver to use.
+ *
+ * @param name
+ *   DMA device name.
+ *
+ * @return
+ *   A pointer to the DMA device slot case of success,
+ *   NULL otherwise.
+ */
+__rte_internal
+struct rte_dmadev *
+rte_dmadev_pmd_allocate(const char *name);
+
+/**
+ * @internal
+ * Release the specified dmadev.
+ *
+ * @param dev
+ *   Device to be released.
+ *
+ * @return
+ *   - 0 on success, negative on error
+ */
+__rte_internal
+int
+rte_dmadev_pmd_release(struct rte_dmadev *dev);
+
+/**
+ * @internal
+ * Return the DMA device based on the device name.
+ *
+ * @param name
+ *   DMA device name.
+ *
+ * @return
+ *   A pointer to the DMA device slot case of success,
+ *   NULL otherwise.
+ */
+__rte_internal
+struct rte_dmadev *
+rte_dmadev_get_device_by_name(const char *name);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_DMADEV_PMD_H_ */
diff --git a/lib/dmadev/version.map b/lib/dmadev/version.map
index 2e37882364..d027eeac97 100644
--- a/lib/dmadev/version.map
+++ b/lib/dmadev/version.map
@@ -22,3 +22,13 @@  EXPERIMENTAL {
 
 	local: *;
 };
+
+INTERNAL {
+        global:
+
+	rte_dmadev_get_device_by_name;
+	rte_dmadev_pmd_allocate;
+	rte_dmadev_pmd_release;
+
+	local: *;
+};