diff options
author | anholt <anholt@FreeBSD.org> | 2005-04-16 03:44:47 +0000 |
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committer | anholt <anholt@FreeBSD.org> | 2005-04-16 03:44:47 +0000 |
commit | ed881e3d943468fbc6be48896b366e62289da086 (patch) | |
tree | a78e79aa5b7b85f67ae2b321bc1be28f19b499b2 /sys/dev/drm/drm_vm.c | |
parent | 9de8e0daf94d3598eba43ca102b8629938c52342 (diff) | |
download | FreeBSD-src-ed881e3d943468fbc6be48896b366e62289da086.zip FreeBSD-src-ed881e3d943468fbc6be48896b366e62289da086.tar.gz |
Update to DRM CVS as of 2005-04-12, bringing many changes:
- Split core DRM routines back into their own module, rather than using the
nasty templated system like before.
- Development-class R300 support in radeon driver (requires userland pieces, of
course).
- Mach64 driver (haven't tested in a while -- my mach64s no longer fit in the
testbox). Covers Rage Pros, Rage Mobility P/M, Rage XL, and some others.
- i915 driver files, which just need to get drm_drv.c fixed to allow attachment
to the drmsub device. Covers i830 through i915 integrated graphics.
- savage driver files, which should require minimal changes to work. Covers the
Savage3D, Savage IX/MX, Savage 4, ProSavage.
- Support for color and texture tiling and HyperZ features of Radeon.
Thanks to: scottl (much p4 handholding)
Jung-uk Kim (helpful prodding)
PR: [1] kern/76879, [2] kern/72548
Submitted by: [1] Alex, lesha at intercaf dot ru
[2] Shaun Jurrens, shaun at shamz dot net
Diffstat (limited to 'sys/dev/drm/drm_vm.c')
-rw-r--r-- | sys/dev/drm/drm_vm.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/sys/dev/drm/drm_vm.c b/sys/dev/drm/drm_vm.c new file mode 100644 index 0000000..81c00c2 --- /dev/null +++ b/sys/dev/drm/drm_vm.c @@ -0,0 +1,127 @@ +/*- + * 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. + * + * $FreeBSD$ + */ + +#include "dev/drm/drmP.h" +#include "dev/drm/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; + + 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); + + DRM_SPINLOCK(&dev->dma_lock); + if (dev->dma && offset >= 0 && offset < ptoa(dev->dma->page_count)) { + drm_device_dma_t *dma = dev->dma; + + 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: +#if defined(__FreeBSD__) && __FreeBSD_version >= 500102 + *paddr = offset; + return 0; +#else + return atop(offset); +#endif + case _DRM_SCATTER_GATHER: + case _DRM_SHM: +#if defined(__FreeBSD__) && __FreeBSD_version >= 500102 + *paddr = vtophys(offset); + return 0; +#else + return atop(vtophys(offset)); +#endif + default: + return -1; /* This should never happen. */ + } + DRM_DEBUG("bailing out\n"); + + return -1; +} + |