b8aa843c63
- 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
128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
/*-
|
|
* 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;
|
|
}
|
|
|