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/*
* bvbuffdesc.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.
*/
#ifndef BVBUFFDESC_H
#define BVBUFFDESC_H
/*
* bvbuffmap - This is a private structure used by BLTsville
* implementations to manage resources associated with a buffer. A pointer
* to this is returned from bv_map() and used in subsequent bv_blt() and
* bv_unmap() calls.
*/
struct bvbuffmap;
#define BVATDEF_VENDOR_SHIFT 24
#define BVATDEF_VENDOR_MASK (0xFF << BVATDEF_VENDOR_SHIFT)
/* Common aux type */
#define BVATDEF_VENDOR_ALL (0x00 << BVATDEF_VENDOR_SHIFT)
/* Texas Instruments, Inc. */
#define BVATDEF_VENDOR_TI (0x01 << BVATDEF_VENDOR_SHIFT)
enum bvauxtype {
BVAT_NONE = 0, /* auxptr not used */
BVAT_PHYSDESC = /* handle points to bvphysdesc struct */
BVATDEF_VENDOR_ALL + 1,
#ifdef BVAT_EXTERNAL_INCLUDE
#include BVAT_EXTERNAL_INCLUDE
#endif
};
struct bvphysdesc {
unsigned int structsize; /* used to identify struct version */
unsigned long pagesize; /* page size in bytes */
unsigned long *pagearray; /* array of physical pages */
unsigned int pagecount; /* number of pages in the pagearray */
unsigned long pageoffset; /* page offset in bytes */
};
/*
* bvbuffdesc - This structure is used to specify the buffer parameters
* in a call to bv_map().
*/
struct bvbuffdesc {
unsigned int structsize; /* used to identify struct version */
void *virtaddr; /* virtual ptr to start of buffer */
unsigned long length; /* length of the buffer in bytes */
struct bvbuffmap *map; /* resource(s) associated w/buffer */
enum bvauxtype auxtype; /* type of auxptr */
void *auxptr; /* additional buffer description data;
type depends on auxtype */
};
#endif /* BVBUFFDESC_H */
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