3 * \brief PCI consistent, DMA-accessible memory functions.
5 * \author Eric Anholt <anholt@FreeBSD.org>
9 * Copyright 2003 Eric Anholt.
10 * All Rights Reserved.
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13 * copy of this software and associated documentation files (the "Software"),
14 * to deal in the Software without restriction, including without limitation
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16 * and/or sell copies of the Software, and to permit persons to whom the
17 * Software is furnished to do so, subject to the following conditions:
19 * The above copyright notice and this permission notice (including the next
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33 #include "dev/drm/drmP.h"
35 /**********************************************************************/
36 /** \name PCI memory */
40 * \brief Allocate a physically contiguous DMA-accessible consistent
44 DRM(pci_alloc)(drm_device_t *dev, size_t size, size_t align, dma_addr_t maxaddr,
49 vaddr = contigmalloc(size, DRM(M_DRM), M_NOWAIT, 0ul, maxaddr, align,
51 *busaddr = vtophys(vaddr);
57 * \brief Free a DMA-accessible consistent memory block.
60 DRM(pci_free)(drm_device_t *dev, size_t size, void *vaddr, dma_addr_t busaddr)
62 #if __FreeBSD_version > 500000
63 contigfree(vaddr, size, DRM(M_DRM)); /* Not available on 4.x */