ab33dfac01
tested on Intel BX chipsets only. The other agp minidrivers are totally untested. The programming api is a subset of the Linux api and is only intended to be enough for the X server to use. There is also an in-kernel api for the use of other kernel modules such as the 3D DRI.
129 lines
4.7 KiB
C
129 lines
4.7 KiB
C
/*-
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* Copyright (c) 2000 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_AGPIO_H_
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#define _SYS_AGPIO_H_
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/*
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* The AGP gatt uses 4k pages irrespective of the host page size.
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*/
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#define AGP_PAGE_SIZE 4096
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#define AGP_PAGE_SHIFT 12
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/*
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* Macros to manipulate AGP mode words.
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*/
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#define AGP_MODE_GET_RQ(x) (((x) & 0xff000000U) >> 24)
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#define AGP_MODE_GET_SBA(x) (((x) & 0x00000200U) >> 9)
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#define AGP_MODE_GET_AGP(x) (((x) & 0x00000100U) >> 8)
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#define AGP_MODE_GET_4G(x) (((x) & 0x00000020U) >> 5)
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#define AGP_MODE_GET_FW(x) (((x) & 0x00000010U) >> 4)
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#define AGP_MODE_GET_RATE(x) ((x) & 0x00000003U)
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#define AGP_MODE_SET_RQ(x,v) (((x) & ~0xff000000U) | ((v) << 24))
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#define AGP_MODE_SET_SBA(x,v) (((x) & ~0x00000200U) | ((v) << 9))
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#define AGP_MODE_SET_AGP(x,v) (((x) & ~0x00000100U) | ((v) << 8))
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#define AGP_MODE_SET_4G(x,v) (((x) & ~0x00000020U) | ((v) << 5))
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#define AGP_MODE_SET_FW(x,v) (((x) & ~0x00000010U) | ((v) << 4))
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#define AGP_MODE_SET_RATE(x,v) (((x) & ~0x00000003U) | (v))
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#define AGP_MODE_RATE_1x 0x00000001
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#define AGP_MODE_RATE_2x 0x00000002
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#define AGP_MODE_RATE_4x 0x00000004
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#define AGPIOC_BASE 'A'
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#define AGPIOC_INFO _IOR (AGPIOC_BASE, 0, agp_info)
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#define AGPIOC_ACQUIRE _IO (AGPIOC_BASE, 1)
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#define AGPIOC_RELEASE _IO (AGPIOC_BASE, 2)
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#define AGPIOC_SETUP _IOW (AGPIOC_BASE, 3, agp_setup)
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#if 0
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#define AGPIOC_RESERVE _IOW (AGPIOC_BASE, 4, agp_region)
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#define AGPIOC_PROTECT _IOW (AGPIOC_BASE, 5, agp_region)
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#endif
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#define AGPIOC_ALLOCATE _IOWR(AGPIOC_BASE, 6, agp_allocate)
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#define AGPIOC_DEALLOCATE _IOW (AGPIOC_BASE, 7, int)
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#define AGPIOC_BIND _IOW (AGPIOC_BASE, 8, agp_bind)
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#define AGPIOC_UNBIND _IOW (AGPIOC_BASE, 9, agp_unbind)
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typedef struct _agp_version {
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u_int16_t major;
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u_int16_t minor;
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} agp_version;
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typedef struct _agp_info {
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agp_version version; /* version of the driver */
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u_int32_t bridge_id; /* bridge vendor/device */
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u_int32_t agp_mode; /* mode info of bridge */
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off_t aper_base; /* base of aperture */
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size_t aper_size; /* size of aperture */
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size_t pg_total; /* max pages (swap + system) */
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size_t pg_system; /* max pages (system) */
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size_t pg_used; /* current pages used */
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} agp_info;
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typedef struct _agp_setup {
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u_int32_t agp_mode; /* mode info of bridge */
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} agp_setup;
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#if 0
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/*
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* The "prot" down below needs still a "sleep" flag somehow ...
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*/
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typedef struct _agp_segment {
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off_t pg_start; /* starting page to populate */
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size_t pg_count; /* number of pages */
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int prot; /* prot flags for mmap */
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} agp_segment;
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typedef struct _agp_region {
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pid_t pid; /* pid of process */
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size_t seg_count; /* number of segments */
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struct _agp_segment *seg_list;
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} agp_region;
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#endif
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typedef struct _agp_allocate {
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int key; /* tag of allocation */
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size_t pg_count; /* number of pages */
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u_int32_t type; /* 0 == normal, other devspec */
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u_int32_t physical; /* device specific (some devices
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* need a phys address of the
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* actual page behind the gatt
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* table) */
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} agp_allocate;
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typedef struct _agp_bind {
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int key; /* tag of allocation */
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off_t pg_start; /* starting page to populate */
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} agp_bind;
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typedef struct _agp_unbind {
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int key; /* tag of allocation */
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u_int32_t priority; /* priority for paging out */
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} agp_unbind;
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#endif /* !_SYS_AGPIO_H_ */
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