renesas/drm.git - libdrm, cloned from git://anongit.freedesktop.org/mesa/drm

Age	Commit message (Collapse)	Author
2002-08-30	Remove some extra symlinking for kernel module building that hasn't been	Eric Anholt
	needed since 2000.
2002-07-05	merged bsd-3-0-0-branch	Alan Hourihane

2002-01-27	First pass merge of XFree86 4.2.0 import.	David Dawes

2001-04-09	Import -f XFree86 4.0.99.2	David Dawes

2000-06-13	Merged bsd-1-0-1	Doug Rabson

2000-05-30	Merged bsd-1-0-0	Doug Rabson

/*- * Copyright 2003 Eric Anholt * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "drmP.h" #include "drm.h" #if defined(__FreeBSD__) && __FreeBSD_version >= 500102 int drm_mmap(struct cdev *kdev, vm_offset_t offset, vm_paddr_t *paddr, int prot) #elif defined(__FreeBSD__) int drm_mmap(dev_t kdev, vm_offset_t offset, int prot) #elif defined(__NetBSD__) || defined(__OpenBSD__) paddr_t drm_mmap(dev_t kdev, off_t offset, int prot) #endif { DRM_DEVICE; drm_local_map_t *map; drm_file_t *priv; drm_map_type_t type; #ifdef __FreeBSD__ vm_paddr_t phys; #else paddr_t phys; #endif DRM_LOCK(); priv = drm_find_file_by_proc(dev, DRM_CURPROC); DRM_UNLOCK(); if (priv == NULL) { DRM_ERROR("can't find authenticator\n"); return EINVAL; } if (!priv->authenticated) return DRM_ERR(EACCES); if (dev->dma && offset >= 0 && offset < ptoa(dev->dma->page_count)) { drm_device_dma_t *dma = dev->dma; DRM_SPINLOCK(&dev->dma_lock); if (dma->pagelist != NULL) { unsigned long page = offset >> PAGE_SHIFT; unsigned long phys = dma->pagelist[page]; #if defined(__FreeBSD__) && __FreeBSD_version >= 500102 *paddr = phys; DRM_SPINUNLOCK(&dev->dma_lock); return 0; #else return atop(phys); #endif } else { DRM_SPINUNLOCK(&dev->dma_lock); return -1; } DRM_SPINUNLOCK(&dev->dma_lock); } /* A sequential search of a linked list is fine here because: 1) there will only be about 5-10 entries in the list and, 2) a DRI client only has to do this mapping once, so it doesn't have to be optimized for performance, even if the list was a bit longer. */ DRM_LOCK(); TAILQ_FOREACH(map, &dev->maplist, link) { if (offset >= map->offset && offset < map->offset + map->size) break; } if (map == NULL) { DRM_UNLOCK(); DRM_DEBUG("can't find map\n"); return -1; } if (((map->flags&_DRM_RESTRICTED) && !DRM_SUSER(DRM_CURPROC))) { DRM_UNLOCK(); DRM_DEBUG("restricted map\n"); return -1; } type = map->type; DRM_UNLOCK(); switch (type) { case _DRM_FRAME_BUFFER: case _DRM_REGISTERS: case _DRM_AGP: phys = offset; break; case _DRM_CONSISTENT: phys = vtophys((char *)map->handle + (offset - map->offset)); break; case _DRM_SCATTER_GATHER: case _DRM_SHM: phys = vtophys(offset); break; default: DRM_ERROR("bad map type %d\n", type); return -1; /* This should never happen. */ } #if defined(__FreeBSD__) && __FreeBSD_version >= 500102 *paddr = phys; return 0; #else return atop(phys); #endif }