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/**
* \file drm_memory.c
* Memory management wrappers for DRM
*
* \author Rickard E. (Rik) Faith <faith@valinux.com>
* \author Gareth Hughes <gareth@valinux.com>
*/
/*
* Created: Thu Feb 4 14:00:34 1999 by faith@valinux.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* 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
* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS 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 <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <dev/drm2/drmP.h>
#if __OS_HAS_AGP
static void *agp_remap(unsigned long offset, unsigned long size,
struct drm_device * dev)
{
/*
* FIXME Linux<->FreeBSD: Not implemented. This is never called
* on FreeBSD anyway, because drm_agp_mem->cant_use_aperture is
* set to 0.
*/
return NULL;
}
#define vunmap(handle)
/** Wrapper around agp_free_memory() */
void drm_free_agp(DRM_AGP_MEM * handle, int pages)
{
device_t agpdev;
agpdev = agp_find_device();
if (!agpdev || !handle)
return;
agp_free_memory(agpdev, handle);
}
EXPORT_SYMBOL(drm_free_agp);
/** Wrapper around agp_bind_memory() */
int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start)
{
device_t agpdev;
agpdev = agp_find_device();
if (!agpdev || !handle)
return -EINVAL;
return -agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
}
/** Wrapper around agp_unbind_memory() */
int drm_unbind_agp(DRM_AGP_MEM * handle)
{
device_t agpdev;
agpdev = agp_find_device();
if (!agpdev || !handle)
return -EINVAL;
return -agp_unbind_memory(agpdev, handle);
}
EXPORT_SYMBOL(drm_unbind_agp);
#else /* __OS_HAS_AGP */
static inline void *agp_remap(unsigned long offset, unsigned long size,
struct drm_device * dev)
{
return NULL;
}
#endif /* agp */
void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev)
{
if (drm_core_has_AGP(dev) &&
dev->agp && dev->agp->cant_use_aperture && map->type == _DRM_AGP)
map->handle = agp_remap(map->offset, map->size, dev);
else
map->handle = pmap_mapdev(map->offset, map->size);
}
EXPORT_SYMBOL(drm_core_ioremap);
void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev)
{
if (drm_core_has_AGP(dev) &&
dev->agp && dev->agp->cant_use_aperture && map->type == _DRM_AGP)
map->handle = agp_remap(map->offset, map->size, dev);
else
map->handle = pmap_mapdev_attr(map->offset, map->size,
VM_MEMATTR_WRITE_COMBINING);
}
EXPORT_SYMBOL(drm_core_ioremap_wc);
void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev)
{
if (!map->handle || !map->size)
return;
if (drm_core_has_AGP(dev) &&
dev->agp && dev->agp->cant_use_aperture && map->type == _DRM_AGP)
vunmap(map->handle);
else
pmap_unmapdev((vm_offset_t)map->handle, map->size);
}
EXPORT_SYMBOL(drm_core_ioremapfree);
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