Network info

Add UAPI and core message that allows user space space to fetch
information about network models built into the firmware.

Change-Id: Ic92529bce3edd0a5499e691a566bd065da2a72ad

1 files changed, 90 insertions, 0 deletions

diff --git a/kernel/ethosu_network_info.h b/kernel/ethosu_network_info.h
new file mode 100644
index 0000000..2a333a6
--- /dev/null
+++ b/kernel/ethosu_network_info.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2022 ARM Limited.
+ *
+ * This program is free software and is provided to you under the terms of the
+ * GNU General Public License version 2 as published by the Free Software
+ * Foundation, and any use by you of this program is subject to the terms
+ * of such GNU licence.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, you can access it online at
+ * http://www.gnu.org/licenses/gpl-2.0.html.
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ */
+
+#ifndef ETHOSU_NETWORK_INFO_H
+#define ETHOSU_NETWORK_INFO_H
+
+/****************************************************************************
+ * Includes
+ ****************************************************************************/
+
+#include "ethosu_core_interface.h"
+
+#include <linux/kref.h>
+#include <linux/types.h>
+#include <linux/completion.h>
+
+/****************************************************************************
+ * Types
+ ****************************************************************************/
+
+struct ethosu_device;
+struct ethosu_network;
+struct ethosu_uapi_network_info;
+
+struct ethosu_network_info {
+	struct ethosu_device            *edev;
+	struct ethosu_network           *net;
+	struct ethosu_uapi_network_info *uapi;
+	struct kref                     kref;
+	struct list_head                list;
+	struct completion               done;
+	int                             errno;
+};
+
+/****************************************************************************
+ * Functions
+ ****************************************************************************/
+
+/**
+ * ethosu_network_info_create() - Create network info
+ *
+ * This function must be called in the context of a user space process.
+ *
+ * Return: Valid pointer on success, else ERR_PTR.
+ */
+struct ethosu_network_info *ethosu_network_info_create(
+	struct ethosu_device *edev,
+	struct ethosu_network *net,
+	struct ethosu_uapi_network_info *uapi);
+
+/**
+ * ethosu_network_info_get() - Get network info
+ */
+void ethosu_network_info_get(struct ethosu_network_info *info);
+
+/**
+ * ethosu_network_info_put() - Put network info
+ */
+void ethosu_network_info_put(struct ethosu_network_info *info);
+
+/**
+ * ethosu_network_info_wait() - Get network info
+ */
+int ethosu_network_info_wait(struct ethosu_network_info *info,
+			     int timeout);
+
+/**
+ * ethosu_network_info_rsp() - Handle network info response.
+ */
+void ethosu_network_info_rsp(struct ethosu_device *edev,
+			     struct ethosu_core_network_info_rsp *rsp);
+
+#endif /* ETHOSU_NETWORK_INFO_H */