if (data.flags)
return -EINVAL;
- shm = tee_shm_alloc(ctx, data.size, TEE_SHM_MAPPED | TEE_SHM_DMA_BUF);
+ shm = tee_shm_alloc_user_buf(ctx, data.size);
if (IS_ERR(shm))
return PTR_ERR(shm);
void teedev_ctx_get(struct tee_context *ctx);
void teedev_ctx_put(struct tee_context *ctx);
+struct tee_shm *tee_shm_alloc_user_buf(struct tee_context *ctx, size_t size);
+
#endif /*TEE_PRIVATE_H*/
}
EXPORT_SYMBOL_GPL(tee_shm_alloc);
+/**
+ * tee_shm_alloc_user_buf() - Allocate shared memory for user space
+ * @ctx: Context that allocates the shared memory
+ * @size: Requested size of shared memory
+ *
+ * Memory allocated as user space shared memory is automatically freed when
+ * the TEE file pointer is closed. The primary usage of this function is
+ * when the TEE driver doesn't support registering ordinary user space
+ * memory.
+ *
+ * @returns a pointer to 'struct tee_shm'
+ */
+struct tee_shm *tee_shm_alloc_user_buf(struct tee_context *ctx, size_t size)
+{
+ return tee_shm_alloc(ctx, size, TEE_SHM_MAPPED | TEE_SHM_DMA_BUF);
+}
+
/**
* tee_shm_alloc_kernel_buf() - Allocate shared memory for kernel buffer
* @ctx: Context that allocates the shared memory
// SPDX-License-Identifier: GPL-2.0-only
/*
- * Copyright (c) 2015, Linaro Limited
+ * Copyright (c) 2015 Linaro Limited
*/
#include <linux/device.h>
#include <linux/dma-buf.h>
/* SPDX-License-Identifier: GPL-2.0-only */
/*
- * Copyright (c) 2015-2016, Linaro Limited
+ * Copyright (c) 2015-2016 Linaro Limited
*/
#ifndef __TEE_DRV_H