1 files changed, 15 insertions, 109 deletions

diff --git a/drivers/tee/tee_private.h b/drivers/tee/tee_private.h
index 21cb6be8bce9..6bde688bfcb1 100644
--- a/drivers/tee/tee_private.h
+++ b/drivers/tee/tee_private.h
@@ -1,15 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (c) 2015-2016, Linaro Limited
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * 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.
- *
  */
 #ifndef TEE_PRIVATE_H
 #define TEE_PRIVATE_H
@@ -17,113 +8,28 @@
 #include <linux/cdev.h>
 #include <linux/completion.h>
 #include <linux/device.h>
+#include <linux/dma-buf.h>
 #include <linux/kref.h>
 #include <linux/mutex.h>
 #include <linux/types.h>
 
-struct tee_device;
-
-/**
- * struct tee_shm - shared memory object
- * @teedev:	device used to allocate the object
- * @ctx:	context using the object, if NULL the context is gone
- * @link	link element
- * @paddr:	physical address of the shared memory
- * @kaddr:	virtual address of the shared memory
- * @size:	size of shared memory
- * @dmabuf:	dmabuf used to for exporting to user space
- * @flags:	defined by TEE_SHM_* in tee_drv.h
- * @id:		unique id of a shared memory object on this device
- */
-struct tee_shm {
-	struct tee_device *teedev;
-	struct tee_context *ctx;
-	struct list_head link;
-	phys_addr_t paddr;
-	void *kaddr;
-	size_t size;
+/* extra references appended to shm object for registered shared memory */
+struct tee_shm_dmabuf_ref {
+	struct tee_shm shm;
+	size_t offset;
 	struct dma_buf *dmabuf;
-	u32 flags;
-	int id;
-};
-
-struct tee_shm_pool_mgr;
-
-/**
- * struct tee_shm_pool_mgr_ops - shared memory pool manager operations
- * @alloc:	called when allocating shared memory
- * @free:	called when freeing shared memory
- */
-struct tee_shm_pool_mgr_ops {
-	int (*alloc)(struct tee_shm_pool_mgr *poolmgr, struct tee_shm *shm,
-		     size_t size);
-	void (*free)(struct tee_shm_pool_mgr *poolmgr, struct tee_shm *shm);
+	struct tee_shm *parent_shm;
 };
 
-/**
- * struct tee_shm_pool_mgr - shared memory manager
- * @ops:		operations
- * @private_data:	private data for the shared memory manager
- */
-struct tee_shm_pool_mgr {
-	const struct tee_shm_pool_mgr_ops *ops;
-	void *private_data;
-};
-
-/**
- * struct tee_shm_pool - shared memory pool
- * @private_mgr:	pool manager for shared memory only between kernel
- *			and secure world
- * @dma_buf_mgr:	pool manager for shared memory exported to user space
- * @destroy:		called when destroying the pool
- * @private_data:	private data for the pool
- */
-struct tee_shm_pool {
-	struct tee_shm_pool_mgr private_mgr;
-	struct tee_shm_pool_mgr dma_buf_mgr;
-	void (*destroy)(struct tee_shm_pool *pool);
-	void *private_data;
-};
-
-#define TEE_DEVICE_FLAG_REGISTERED	0x1
-#define TEE_MAX_DEV_NAME_LEN		32
-
-/**
- * struct tee_device - TEE Device representation
- * @name:	name of device
- * @desc:	description of device
- * @id:		unique id of device
- * @flags:	represented by TEE_DEVICE_FLAG_REGISTERED above
- * @dev:	embedded basic device structure
- * @cdev:	embedded cdev
- * @num_users:	number of active users of this device
- * @c_no_user:	completion used when unregistering the device
- * @mutex:	mutex protecting @num_users and @idr
- * @idr:	register of shared memory object allocated on this device
- * @pool:	shared memory pool
- */
-struct tee_device {
-	char name[TEE_MAX_DEV_NAME_LEN];
-	const struct tee_desc *desc;
-	int id;
-	unsigned int flags;
-
-	struct device dev;
-	struct cdev cdev;
-
-	size_t num_users;
-	struct completion c_no_users;
-	struct mutex mutex;	/* protects num_users and idr */
-
-	struct idr idr;
-	struct tee_shm_pool *pool;
-};
-
-int tee_shm_init(void);
-
 int tee_shm_get_fd(struct tee_shm *shm);
 
-bool tee_device_get(struct tee_device *teedev);
-void tee_device_put(struct tee_device *teedev);
+struct tee_shm *tee_shm_alloc_user_buf(struct tee_context *ctx, size_t size);
+struct tee_shm *tee_shm_register_user_buf(struct tee_context *ctx,
+					  unsigned long addr, size_t length);
+
+int tee_heap_update_from_dma_buf(struct tee_device *teedev,
+				 struct dma_buf *dmabuf, size_t *offset,
+				 struct tee_shm *shm,
+				 struct tee_shm **parent_shm);
 
 #endif /*TEE_PRIVATE_H*/