Aren
/
haiku
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

new general headerfile for AGP use on graphicscards. If it shouldn't be here, let me know... Committing because it's needed now. 

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@8123 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen 2004-06-22 11:07:03 +00:00
parent b9fda5e234
commit a83a917d79
1 changed files with 95 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

95
headers/private/graphics/AGP.h Normal file
View File

@ -0,0 +1,95 @@
/*******************************************************************************
/
/ File: AGP.h
/
/ Description: Interface to the AGP bus and driver.
/ For more information, see "AGP interface specification", Revision 2.0 and 3.0,
/ Intel Corporation, 1998-2002.
/
/ Rudolf Cornelissen 6/2004.
/
*******************************************************************************/
#if !defined(_AGP_H_)
#define _AGP_H_
#include <Drivers.h>
/* The API for driver access is C, not C++ */
#ifdef __cplusplus
extern "C" {
#endif
//driver IOCTRL argument:
typedef struct {
struct
{
ushort vendor_id, /* host bridge vendor id */
device_id; /* host bridge device id */
} dev;
struct
{
uint32 agp_cap_id, /* AGP capability register as defined in the AGP standard */
agp_stat, /* AGP STATUS register as defined in the AGP standard */
agp_cmd; /* AGP COMMAND register as defined in the AGP standard */
}config;
status_t status; /* hostbridge usability status (B_OK if usable, B_ERROR if it
* did not respond according to the AGP standard */
} agp_info;
//driver IOCTRL operation codes:
enum
{
GET_CONFIG = B_DEVICE_OP_CODES_END+20001,
SET_CONFIG,
};
/* ---
value for the AGP_id field in the agp_cap_id register
--- */
#define AGP_id 0x02 /* AGP device identification */
/* ---
masks for capability ID register bits
--- */
#define AGP_id_mask 0x000000ff /* AGP capability identification, contains value 0x02 for AGP device */
#define AGP_next_ptr 0x0000ff00 /* pointer to next item in PCI capabilities list, contains 0x00 if this is last item */
#define AGP_next_ptr_shift 8
#define AGP_rev_minor 0x000f0000 /* AGP Revision minor number reported */
#define AGP_rev_minor_shift 16
#define AGP_rev_major 0x00f00000 /* AGP Revision major number reported */
#define AGP_rev_major_shift 20
/* ---
masks for status and command register bits
--- */
#define AGP_2_1x 0x00000001 /* AGP Revision 2.0 1x speed transfer mode */
#define AGP_2_2x 0x00000002 /* AGP Revision 2.0 2x speed transfer mode */
#define AGP_2_4x 0x00000004 /* AGP Revision 2.0 4x speed transfer mode */
#define AGP_3_4x 0x00000001 /* AGP Revision 3.0 4x speed transfer mode */
#define AGP_3_8x 0x00000002 /* AGP Revision 3.0 8x speed transfer mode */
#define AGP_rates 0x00000007 /* mask for supported rates info */
#define AGP_rate_rev 0x00000008 /* 0 if AGP Revision 2.0 or earlier rate scheme, 1 if AGP Revision 3.0 rate scheme */
#define AGP_FW 0x00000010 /* 1 if fastwrite transfers supported */
#define AGP_4G 0x00000020 /* 1 if adresses above 4G bytes supported */
#define AGP_SBA 0x00000200 /* 1 if sideband adressing supported */
#define AGP_RQ 0xff000000 /* max. number of enqueued AGP command requests supported, minus one */
#define AGP_RQ_shift 24
/* ---
masks for command register bits
--- */
#define AGP_enable 0x00000100 /* set to 1 if AGP should be enabled */
#ifdef __cplusplus
}
#endif
#endif