Restructure kernel driver source tree

As a first step to have a clearer separation of the different parts of
the kernel driver, the source files have been placed into separate
directories according to their purpose and the different parts are only
allowed to use headers from another part in the include folder.

Files have been renamed accordingly to namespace them by their purpose.

Change-Id: I75e09ebf0002c99a22b6d4b09d34504d186c32b3
Signed-off-by: Mikael Olsson <mikael.olsson@arm.com>

1 files changed, 124 insertions, 0 deletions

diff --git a/kernel/include/rpmsg/ethosu_rpmsg_inference.h b/kernel/include/rpmsg/ethosu_rpmsg_inference.h
new file mode 100644
index 0000000..8bdfb8a
--- /dev/null
+++ b/kernel/include/rpmsg/ethosu_rpmsg_inference.h
@@ -0,0 +1,124 @@
+/*
+ * SPDX-FileCopyrightText: Copyright 2020, 2022-2024 Arm Limited and/or its affiliates <open-source-office@arm.com>
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ * 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.
+ */
+
+#ifndef ETHOSU_INFERENCE_H
+#define ETHOSU_INFERENCE_H
+
+/****************************************************************************
+ * Includes
+ ****************************************************************************/
+
+#include <rpmsg/ethosu_rpmsg_mailbox.h>
+#include <uapi/ethosu.h>
+
+#include <linux/kref.h>
+#include <linux/types.h>
+
+/****************************************************************************
+ * Types
+ ****************************************************************************/
+
+struct ethosu_buffer;
+struct ethosu_core_msg_inference_rsp;
+struct ethosu_network;
+struct ethosu_uapi_inference_create;
+struct file;
+
+/**
+ * struct ethosu_inference - Inference struct
+ * @edev:			Arm Ethos-U device
+ * @file:			File handle
+ * @kref:			Reference counter
+ * @waitq:			Wait queue
+ * @done:			Wait condition is done
+ * @ifm:			Pointer to IFM buffer
+ * @ofm:			Pointer to OFM buffer
+ * @net:			Pointer to network
+ * @status:			Inference status
+ * @pmu_event_config:		PMU event configuration
+ * @pmu_event_count:		PMU event count after inference
+ * @pmu_cycle_counter_enable:	PMU cycle counter config
+ * @pmu_cycle_counter_count:	PMU cycle counter count after inference
+ * @msg:			Mailbox message
+ */
+struct ethosu_inference {
+	struct device             *dev;
+	struct ethosu_mailbox     *mailbox;
+	struct file               *file;
+	struct kref               kref;
+	wait_queue_head_t         waitq;
+	bool                      done;
+	uint32_t                  ifm_count;
+	struct ethosu_buffer      *ifm[ETHOSU_FD_MAX];
+	uint32_t                  ofm_count;
+	struct ethosu_buffer      *ofm[ETHOSU_FD_MAX];
+	struct ethosu_network     *net;
+	enum ethosu_uapi_status   status;
+	uint8_t                   pmu_event_config[ETHOSU_PMU_EVENT_MAX];
+	uint64_t                  pmu_event_count[ETHOSU_PMU_EVENT_MAX];
+	uint32_t                  pmu_cycle_counter_enable;
+	uint64_t                  pmu_cycle_counter_count;
+	struct ethosu_mailbox_msg msg;
+};
+
+/****************************************************************************
+ * Functions
+ ****************************************************************************/
+
+/**
+ * ethosu_inference_create() - Create inference
+ *
+ * This function must be called in the context of a user space process.
+ *
+ * Return: fd on success, else error code.
+ */
+int ethosu_inference_create(struct device *dev,
+			    struct ethosu_mailbox *mailbox,
+			    struct ethosu_network *net,
+			    struct ethosu_uapi_inference_create *uapi);
+
+/**
+ * ethosu_inference_get_from_fd() - Get inference handle from fd
+ *
+ * This function must be called from a user space context.
+ *
+ * Return: Pointer on success, else ERR_PTR.
+ */
+struct ethosu_inference *ethosu_inference_get_from_fd(int fd);
+
+/**
+ * ethosu_inference_get() - Get inference
+ */
+void ethosu_inference_get(struct ethosu_inference *inf);
+
+/**
+ * ethosu_inference_put() - Put inference
+ *
+ * Return: 1 if object was removed, else 0.
+ */
+int ethosu_inference_put(struct ethosu_inference *inf);
+
+/**
+ * ethosu_inference_rsp() - Handle inference response
+ */
+void ethosu_inference_rsp(struct ethosu_mailbox *mailbox,
+			  int msg_id,
+			  struct ethosu_core_msg_inference_rsp *rsp);
+
+#endif /* ETHOSU_INFERENCE_H */