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From: Chengwen Feng <fengchengwen@huawei.com>
To: <thomas@monjalon.net>, <ferruh.yigit@intel.com>,
<bruce.richardson@intel.com>, <jerinj@marvell.com>, <jerinjacobk@gmail.com>,
<andrew.rybchenko@oktetlabs.ru>
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Date: Tue, 10 Aug 2021 19:54:11 +0800
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Subject: [dpdk-dev] [PATCH v14 3/6] dmadev: introduce DMA device library PMD
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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>
---
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 --git a/lib/dmadev/meson.build b/lib/dmadev/meson.build
index f421ec1..833baf7 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 3c72aa8..48803ae 100644
--- a/lib/dmadev/rte_dmadev.h
+++ b/lib/dmadev/rte_dmadev.h
@@ -743,6 +743,8 @@ 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 0000000..45141f9
--- /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 02fffe3..408b93c 100644
--- a/lib/dmadev/version.map
+++ b/lib/dmadev/version.map
@@ -23,3 +23,13 @@ EXPERIMENTAL {
local: *;
};
+
+INTERNAL {
+ global:
+
+ rte_dmadev_get_device_by_name;
+ rte_dmadev_pmd_allocate;
+ rte_dmadev_pmd_release;
+
+ local: *;
+};
--
2.8.1