1d0d7f3ee4
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.
134 lines
3.9 KiB
C
134 lines
3.9 KiB
C
/*
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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
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* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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*
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* $FreeBSD$
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*/
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#if defined(__FreeBSD__) && __FreeBSD_version >= 500102
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static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, vm_paddr_t *paddr,
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int prot)
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#elif defined(__FreeBSD__)
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static int DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
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#elif defined(__NetBSD__)
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static paddr_t DRM(dma_mmap)(dev_t kdev, vm_offset_t offset, int prot)
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#endif
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{
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DRM_DEVICE;
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drm_device_dma_t *dma = dev->dma;
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unsigned long physical;
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unsigned long page;
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if (dma == NULL || dma->pagelist == NULL)
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return -1;
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page = offset >> PAGE_SHIFT;
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physical = dma->pagelist[page];
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DRM_DEBUG("0x%08lx (page %lu) => 0x%08lx\n", (long)offset, page, physical);
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#if defined(__FreeBSD__) && __FreeBSD_version >= 500102
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*paddr = physical;
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return 0;
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#else
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return atop(physical);
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#endif
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}
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#if defined(__FreeBSD__) && __FreeBSD_version >= 500102
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int DRM(mmap)(dev_t kdev, vm_offset_t offset, vm_paddr_t *paddr,
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int prot)
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#elif defined(__FreeBSD__)
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int DRM(mmap)(dev_t kdev, vm_offset_t offset, int prot)
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#elif defined(__NetBSD__)
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paddr_t DRM(mmap)(dev_t kdev, off_t offset, int prot)
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#endif
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{
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DRM_DEVICE;
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drm_local_map_t *map = NULL;
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drm_map_list_entry_t *listentry = NULL;
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drm_file_t *priv;
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DRM_GET_PRIV_WITH_RETURN(priv, (DRMFILE)DRM_CURRENTPID);
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if (!priv->authenticated)
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return DRM_ERR(EACCES);
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if (dev->dma
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&& offset >= 0
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&& offset < ptoa(dev->dma->page_count))
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#if defined(__FreeBSD__) && __FreeBSD_version >= 500102
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return DRM(dma_mmap)(kdev, offset, paddr, prot);
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#else
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return DRM(dma_mmap)(kdev, offset, prot);
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#endif
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/* A sequential search of a linked list is
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fine here because: 1) there will only be
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about 5-10 entries in the list and, 2) a
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DRI client only has to do this mapping
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once, so it doesn't have to be optimized
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for performance, even if the list was a
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bit longer. */
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TAILQ_FOREACH(listentry, dev->maplist, link) {
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map = listentry->map;
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/* DRM_DEBUG("considering 0x%x..0x%x\n", map->offset, map->offset + map->size - 1);*/
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if (offset >= map->offset
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&& offset < map->offset + map->size) break;
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}
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if (!listentry) {
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DRM_DEBUG("can't find map\n");
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return -1;
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}
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if (((map->flags&_DRM_RESTRICTED) && DRM_SUSER(DRM_CURPROC))) {
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DRM_DEBUG("restricted map\n");
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return -1;
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}
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switch (map->type) {
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case _DRM_FRAME_BUFFER:
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case _DRM_REGISTERS:
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case _DRM_AGP:
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#if defined(__FreeBSD__) && __FreeBSD_version >= 500102
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*paddr = offset;
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return 0;
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#else
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return atop(offset);
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#endif
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case _DRM_SCATTER_GATHER:
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case _DRM_SHM:
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#if defined(__FreeBSD__) && __FreeBSD_version >= 500102
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*paddr = vtophys(offset);
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return 0;
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#else
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return atop(vtophys(offset));
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#endif
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default:
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return -1; /* This should never happen. */
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}
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DRM_DEBUG("bailing out\n");
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return -1;
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}
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