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Diffstat (limited to 'kernel-headers/linux/bvinternal.h')
-rw-r--r-- | kernel-headers/linux/bvinternal.h | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/kernel-headers/linux/bvinternal.h b/kernel-headers/linux/bvinternal.h new file mode 100644 index 0000000..82648b5 --- /dev/null +++ b/kernel-headers/linux/bvinternal.h @@ -0,0 +1,46 @@ +/* + * bvinternal.h + * + * Copyright (C) 2011 Texas Instruments, Inc. + * + * This package is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +/* + * This file contains definitions used by implementations of BLTsville + * 2-D libraries. It should not be used by clients. + */ + +#ifndef BVINTERNAL_H +#define BVINTENRAL_H + +/* + * bvbuffmap - The bvbuffmap structure is used to track resources + * associated with a buffer, such as a h/w MMU entry. The implementations + * add bvbuffmap objects when they allocate the resources. Then when a + * buffer is accessed, the implementations can regain access to the + * associated resources. The implementations allocate and populate this + * structure when a bv_map() call is made. It is used in subsequent + * bv_blt() and bv_unmap() calls. The latter frees the associated resource + * and the structure (if applicable). Note that a given resource might be + * used by more than one implementation. + */ +struct bvbuffmap { + unsigned int structsize; /* used to ID structure ver */ + + /* function to unmap this resource */ + BVFN_UNMAP bv_unmap; + + unsigned long handle; /* resource-specific info */ + + /* pointer to next resource mapping structure */ + struct bvbuffmap *nextmap; +}; + +#endif /* BVINTERNAL_H */ |