| /* |
| * Copyright (C) 2010 ARM Limited. All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @file ump_ref_drv.h |
| * |
| * Reference driver extensions to the UMP user space API for allocating UMP memory |
| */ |
| |
| #ifndef _UNIFIED_MEMORY_PROVIDER_REF_DRV_H_ |
| #define _UNIFIED_MEMORY_PROVIDER_REF_DRV_H_ |
| |
| #include "ump.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| typedef enum |
| { |
| /* This enum must match with the IOCTL enum in ump_ioctl.h */ |
| UMP_REF_DRV_CONSTRAINT_NONE = 0, |
| UMP_REF_DRV_CONSTRAINT_PHYSICALLY_LINEAR = 1, |
| UMP_REF_DRV_CONSTRAINT_USE_CACHE = 4, |
| } ump_alloc_constraints; |
| |
| /** Allocate an UMP handle containing a memory buffer. |
| * Input: Size: The minimum size for the allocation. |
| * Usage: If this is UMP_REF_DRV_CONSTRAINT_USE_CACHE, the allocation is mapped as cached by the cpu. |
| * If it is UMP_REF_DRV_CONSTRAINT_NONE it is mapped as noncached. |
| * The flag UMP_REF_DRV_CONSTRAINT_PHYSICALLY_LINEAR is not supported.*/ |
| UMP_API_EXPORT ump_handle ump_ref_drv_allocate(unsigned long size, ump_alloc_constraints usage); |
| |
| typedef enum |
| { |
| UMP_MSYNC_CLEAN = 0 , |
| UMP_MSYNC_CLEAN_AND_INVALIDATE = 1, |
| UMP_MSYNC_READOUT_CACHE_ENABLED = 128, |
| } ump_cpu_msync_op; |
| |
| /** Flushing cache for an ump_handle. |
| * The function will always CLEAN_AND_INVALIDATE as long as the \a op is not UMP_MSYNC_READOUT_CACHE_ENABLED. |
| * If so it will only report back if the given ump_handle is cacheable. |
| * At the momement the implementation does not use \a address or \a size. |
| * Return value is 1 if cache is enabled, and 0 if it is disabled for the given allocation.*/ |
| UMP_API_EXPORT int ump_cpu_msync_now(ump_handle mem, ump_cpu_msync_op op, void* address, int size); |
| |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /*_UNIFIED_MEMORY_PROVIDER_REF_DRV_H_ */ |