d20841648d
locking, and the apparently unnecessary locking for -stable has been removed. This may fix issues with missed interrupts since April, which manifested themselves as slowdowns or hangs in radeon, in particular. Many cleanups also took place. In the shared code, there are improvements to r128 driver stability.
68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/**
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* \file drm_pci.h
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* \brief PCI consistent, DMA-accessible memory functions.
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*
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* \author Eric Anholt <anholt@FreeBSD.org>
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*/
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/*
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* Copyright 2003 Eric Anholt.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* $FreeBSD$
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*/
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#include "dev/drm/drmP.h"
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/**********************************************************************/
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/** \name PCI memory */
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/*@{*/
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/**
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* \brief Allocate a physically contiguous DMA-accessible consistent
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* memory block.
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*/
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void *
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DRM(pci_alloc)(drm_device_t *dev, size_t size, size_t align, dma_addr_t maxaddr,
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dma_addr_t *busaddr)
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{
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void *vaddr;
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vaddr = contigmalloc(size, DRM(M_DRM), M_NOWAIT, 0ul, maxaddr, align,
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0);
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*busaddr = vtophys(vaddr);
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return vaddr;
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}
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/**
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* \brief Free a DMA-accessible consistent memory block.
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*/
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void
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DRM(pci_free)(drm_device_t *dev, size_t size, void *vaddr, dma_addr_t busaddr)
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{
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#if __FreeBSD_version > 500000
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contigfree(vaddr, size, DRM(M_DRM)); /* Not available on 4.x */
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#endif
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}
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/*@}*/
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