103d05f3c2
* Removed "physical" parameter of GART's bind_aperture() - I don't think this be of use to anyone. * Fixed binding/unbinding pages in the Intel GART driver; I accidently shifted the page offset twice. * Actually forgot handling of allocated memory in Aperture::BindMemory(). * Minor cleanup. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23796 a95241bf-73f2-0310-859d-f6bbb57e9c96
124 lines
4.4 KiB
C
124 lines
4.4 KiB
C
/*
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* Copyright 2004-2008, Haiku, Inc. All Rights Reserved.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _AGP_H_
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#define _AGP_H_
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#include <bus_manager.h>
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typedef struct agp_info {
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ushort vendor_id; /* vendor id */
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ushort device_id; /* device id */
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uchar bus; /* bus number */
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uchar device; /* device number on bus */
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uchar function; /* function number in device */
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uchar class_sub; /* specific device function */
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uchar class_base; /* device type (display vs host bridge) */
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struct {
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uint32 capability_id; /* AGP capability register as defined in the AGP standard */
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uint32 status; /* AGP STATUS register as defined in the AGP standard */
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uint32 command; /* AGP COMMAND register as defined in the AGP standard */
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} interface;
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} agp_info;
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typedef struct aperture_info {
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addr_t physical_base;
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addr_t base;
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size_t size;
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size_t reserved_size;
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} aperture_info;
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/* flags for allocate_memory */
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enum {
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B_APERTURE_NON_RESERVED = 0x01,
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B_APERTURE_NEED_PHYSICAL = 0x02,
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};
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typedef int32 aperture_id;
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typedef struct gart_bus_module_info gart_bus_module_info;
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typedef struct agp_gart_module_info {
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bus_manager_info info;
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// AGP functionality
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status_t (*get_nth_agp_info)(uint32 index, agp_info *info);
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status_t (*acquire_agp)(void);
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void (*release_agp)(void);
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uint32 (*set_agp_mode)(uint32 command);
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// GART functionality
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aperture_id (*map_aperture)(uint8 bus, uint8 device, uint8 function,
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size_t size, addr_t *_apertureBase);
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aperture_id (*map_custom_aperture)(gart_bus_module_info *module,
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addr_t *_apertureBase);
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status_t (*unmap_aperture)(aperture_id id);
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status_t (*get_aperture_info)(aperture_id id, aperture_info *info);
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status_t (*allocate_memory)(aperture_id id, size_t size,
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size_t alignment, uint32 flags, addr_t *_apertureBase,
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addr_t *_physicalBase);
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status_t (*free_memory)(aperture_id id, addr_t apertureBase);
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status_t (*reserve_aperture)(aperture_id id, size_t size,
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addr_t *_apertureBase);
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status_t (*unreserve_aperture)(aperture_id id, addr_t apertureBase);
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status_t (*bind_aperture)(aperture_id id, area_id area, addr_t base,
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size_t size, size_t alignment, addr_t reservedBase,
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addr_t *_apertureBase);
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status_t (*unbind_aperture)(aperture_id id, addr_t apertureBase);
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} agp_gart_module_info;
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#define B_AGP_GART_MODULE_NAME "bus_managers/agp_gart/v0"
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struct agp_gart_for_bus_module_info {
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module_info info;
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};
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#define B_AGP_GART_FOR_BUS_MODULE_NAME "bus_managers/agp_gart/bus/v0"
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struct agp_gart_bus_module_info {
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module_info info;
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// TODO: add some stuff for non-generic AGP support as well
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status_t (*create_aperture)(uint8 bus, uint8 device, uint8 function,
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size_t size, void **_aperture);
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void (*delete_aperture)(void *aperture);
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status_t (*get_aperture_info)(void *aperture, aperture_info *info);
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status_t (*set_aperture_size)(void *aperture, size_t size);
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status_t (*bind_page)(void *aperture, uint32 offset,
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addr_t physicalAddress);
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status_t (*unbind_page)(void *aperture, uint32 offset);
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void (*flush_tlbs)(void *aperture);
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};
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/* defines for capability ID register bits */
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#define AGP_REV_MINOR 0x000f0000 /* AGP Revision minor number reported */
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#define AGP_REV_MINOR_SHIFT 16
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#define AGP_REV_MAJOR 0x00f00000 /* AGP Revision major number reported */
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#define AGP_REV_MAJOR_SHIFT 20
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/* defines for status and command register bits */
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#define AGP_2_1x 0x00000001 /* AGP Revision 2.0 1x speed transfer mode */
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#define AGP_2_2x 0x00000002 /* AGP Revision 2.0 2x speed transfer mode */
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#define AGP_2_4x 0x00000004 /* AGP Revision 2.0 4x speed transfer mode */
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#define AGP_3_4x 0x00000001 /* AGP Revision 3.0 4x speed transfer mode */
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#define AGP_3_8x 0x00000002 /* AGP Revision 3.0 8x speed transfer mode */
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#define AGP_RATE_MASK 0x00000007 /* mask for supported rates info */
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#define AGP_3_MODE 0x00000008 /* 0 if AGP Revision 2.0 or earlier rate scheme,
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* 1 if AGP Revision 3.0 rate scheme */
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#define AGP_FAST_WRITE 0x00000010 /* 1 if fast write transfers supported */
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#define AGP_ABOVE_4G 0x00000020 /* 1 if adresses above 4G bytes supported */
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#define AGP_SBA 0x00000200 /* 1 if side band adressing supported */
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#define AGP_REQUEST 0xff000000 /* max. number of enqueued AGP command requests
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* supported, minus one */
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#define AGP_REQUEST_SHIFT 24
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/* masks for command register bits */
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#define AGP_ENABLE 0x00000100 /* set to 1 if AGP should be enabled */
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#endif /* _AGP_H_ */
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