mirror of https://github.com/OpenIPC/firmware.git
84 lines
2.5 KiB
Diff
84 lines
2.5 KiB
Diff
diff -drupN a/drivers/tee/tee_private.h b/drivers/tee/tee_private.h
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--- a/drivers/tee/tee_private.h 1970-01-01 03:00:00.000000000 +0300
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+++ b/drivers/tee/tee_private.h 2022-06-12 05:28:14.000000000 +0300
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@@ -0,0 +1,79 @@
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+/*
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+ * Copyright (c) 2015-2016, Linaro Limited
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+ *
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+ * This software is licensed under the terms of the GNU General Public
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+ * License version 2, as published by the Free Software Foundation, and
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+ * may be copied, distributed, and modified under those terms.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ */
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+#ifndef TEE_PRIVATE_H
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+#define TEE_PRIVATE_H
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+
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+#include <linux/cdev.h>
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+#include <linux/completion.h>
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+#include <linux/device.h>
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+#include <linux/kref.h>
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+#include <linux/mutex.h>
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+#include <linux/types.h>
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+
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+/**
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+ * struct tee_shm_pool - shared memory pool
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+ * @private_mgr: pool manager for shared memory only between kernel
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+ * and secure world
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+ * @dma_buf_mgr: pool manager for shared memory exported to user space
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+ */
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+struct tee_shm_pool {
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+ struct tee_shm_pool_mgr *private_mgr;
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+ struct tee_shm_pool_mgr *dma_buf_mgr;
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+};
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+
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+#define TEE_DEVICE_FLAG_REGISTERED 0x1
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+#define TEE_MAX_DEV_NAME_LEN 32
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+
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+/**
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+ * struct tee_device - TEE Device representation
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+ * @name: name of device
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+ * @desc: description of device
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+ * @id: unique id of device
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+ * @flags: represented by TEE_DEVICE_FLAG_REGISTERED above
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+ * @dev: embedded basic device structure
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+ * @cdev: embedded cdev
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+ * @num_users: number of active users of this device
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+ * @c_no_user: completion used when unregistering the device
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+ * @mutex: mutex protecting @num_users and @idr
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+ * @idr: register of shared memory object allocated on this device
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+ * @pool: shared memory pool
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+ */
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+struct tee_device {
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+ char name[TEE_MAX_DEV_NAME_LEN];
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+ const struct tee_desc *desc;
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+ int id;
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+ unsigned int flags;
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+
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+ struct device dev;
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+ struct cdev cdev;
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+
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+ size_t num_users;
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+ struct completion c_no_users;
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+ struct mutex mutex; /* protects num_users and idr */
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+
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+ struct idr idr;
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+ struct tee_shm_pool *pool;
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+};
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+
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+int tee_shm_init(void);
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+
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+int tee_shm_get_fd(struct tee_shm *shm);
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+
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+bool tee_device_get(struct tee_device *teedev);
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+void tee_device_put(struct tee_device *teedev);
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+
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+void teedev_ctx_get(struct tee_context *ctx);
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+void teedev_ctx_put(struct tee_context *ctx);
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+
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+#endif /*TEE_PRIVATE_H*/
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