718cf2ccb9
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
147 lines
4.4 KiB
C
147 lines
4.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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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 _PCI_AGPVAR_H_
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#define _PCI_AGPVAR_H_
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/*
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* The AGP chipset can be acquired by user or kernel code. If the
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* chipset has already been acquired, it cannot be acquired by another
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* user until the previous user has released it.
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*/
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enum agp_acquire_state {
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AGP_ACQUIRE_FREE,
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AGP_ACQUIRE_USER,
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AGP_ACQUIRE_KERNEL
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};
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/*
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* This structure is used to query the state of the AGP system.
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*/
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struct agp_info {
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u_int32_t ai_mode;
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vm_offset_t ai_aperture_base;
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vm_size_t ai_aperture_size;
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vm_size_t ai_memory_allowed;
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vm_size_t ai_memory_used;
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u_int32_t ai_devid;
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};
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struct agp_memory_info {
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vm_size_t ami_size; /* size in bytes */
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vm_offset_t ami_physical; /* bogus hack for i810 */
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vm_offset_t ami_offset; /* page offset if bound */
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int ami_is_bound; /* non-zero if bound */
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};
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/*
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* Find the AGP device and return it.
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*/
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device_t agp_find_device(void);
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/*
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* Return the current owner of the AGP chipset.
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*/
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enum agp_acquire_state agp_state(device_t dev);
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/*
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* Query the state of the AGP system.
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*/
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void agp_get_info(device_t dev, struct agp_info *info);
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/*
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* Acquire the AGP chipset for use by the kernel. Returns EBUSY if the
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* AGP chipset is already acquired by another user.
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*/
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int agp_acquire(device_t dev);
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/*
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* Release the AGP chipset.
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*/
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int agp_release(device_t dev);
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/*
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* Enable the agp hardware with the relavent mode. The mode bits are
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* defined in <dev/agp/agpreg.h>
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*/
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int agp_enable(device_t dev, u_int32_t mode);
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/*
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* Allocate physical memory suitable for mapping into the AGP
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* aperture. The value returned is an opaque handle which can be
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* passed to agp_bind(), agp_unbind() or agp_deallocate().
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*/
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void *agp_alloc_memory(device_t dev, int type, vm_size_t bytes);
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/*
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* Free memory which was allocated with agp_allocate().
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*/
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void agp_free_memory(device_t dev, void *handle);
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/*
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* Bind memory allocated with agp_allocate() at a given offset within
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* the AGP aperture. Returns EINVAL if the memory is already bound or
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* the offset is not at an AGP page boundary.
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*/
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int agp_bind_memory(device_t dev, void *handle, vm_offset_t offset);
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/*
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* Unbind memory from the AGP aperture. Returns EINVAL if the memory
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* is not bound.
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*/
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int agp_unbind_memory(device_t dev, void *handle);
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/*
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* Retrieve information about a memory block allocated with
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* agp_alloc_memory().
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*/
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void agp_memory_info(device_t dev, void *handle, struct agp_memory_info *mi);
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/*
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* Bind a set of pages at a given offset within the AGP aperture.
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* Returns EINVAL if the given size or offset is not at an AGP page boundary.
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*/
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int agp_bind_pages(device_t dev, vm_page_t *pages, vm_size_t size,
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vm_offset_t offset);
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/*
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* Unbind a set of pages from the AGP aperture.
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* Returns EINVAL if the given size or offset is not at an AGP page boundary.
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*/
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int agp_unbind_pages(device_t dev, vm_size_t size, vm_offset_t offset);
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#define AGP_NORMAL_MEMORY 0
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#define AGP_USER_TYPES (1 << 16)
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#define AGP_USER_MEMORY (AGP_USER_TYPES)
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#define AGP_USER_CACHED_MEMORY (AGP_USER_TYPES + 1)
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#endif /* !_PCI_AGPVAR_H_ */
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