592ffb2175
Revert r338177, r338176, r338175, r338174, r338172 After long consultations with re@, core members and mmacy, revert these changes. Followup changes will be made to mark them as deprecated and prent a message about where to find the up-to-date driver. Followup commits will be made to make this clear in the installer. Followup commits to reduce POLA in ways we're still exploring. It's anticipated that after the freeze, this will be removed in 13-current (with the residual of the drm2 code copied to sys/arm/dev/drm2 for the TEGRA port's use w/o the intel or radeon drivers). Due to the impending freeze, there was no formal core vote for this. I've been talking to different core members all day, as well as Matt Macey and Glen Barber. Nobody is completely happy, all are grudgingly going along with this. Work is in progress to mitigate the negative effects as much as possible. Requested by: re@ (gjb, rgrimes)
135 lines
3.8 KiB
C
135 lines
3.8 KiB
C
/**
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* \file drm_memory.c
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* Memory management wrappers for DRM
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*
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* \author Rickard E. (Rik) Faith <faith@valinux.com>
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* \author Gareth Hughes <gareth@valinux.com>
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*/
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/*
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* Created: Thu Feb 4 14:00:34 1999 by faith@valinux.com
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*
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* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
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* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
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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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* VA LINUX SYSTEMS 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
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <dev/drm2/drmP.h>
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#define vunmap(handle)
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#if __OS_HAS_AGP
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static void *agp_remap(unsigned long offset, unsigned long size,
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struct drm_device * dev)
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{
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/*
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* FIXME Linux<->FreeBSD: Not implemented. This is never called
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* on FreeBSD anyway, because drm_agp_mem->cant_use_aperture is
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* set to 0.
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*/
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return NULL;
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}
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/** Wrapper around agp_free_memory() */
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void drm_free_agp(DRM_AGP_MEM * handle, int pages)
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{
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device_t agpdev;
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agpdev = agp_find_device();
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if (!agpdev || !handle)
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return;
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agp_free_memory(agpdev, handle);
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}
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EXPORT_SYMBOL(drm_free_agp);
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/** Wrapper around agp_bind_memory() */
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int drm_bind_agp(DRM_AGP_MEM * handle, unsigned int start)
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{
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device_t agpdev;
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agpdev = agp_find_device();
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if (!agpdev || !handle)
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return -EINVAL;
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return -agp_bind_memory(agpdev, handle, start * PAGE_SIZE);
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}
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/** Wrapper around agp_unbind_memory() */
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int drm_unbind_agp(DRM_AGP_MEM * handle)
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{
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device_t agpdev;
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agpdev = agp_find_device();
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if (!agpdev || !handle)
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return -EINVAL;
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return -agp_unbind_memory(agpdev, handle);
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}
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EXPORT_SYMBOL(drm_unbind_agp);
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#else /* __OS_HAS_AGP */
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static inline void *agp_remap(unsigned long offset, unsigned long size,
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struct drm_device * dev)
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{
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return NULL;
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}
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#endif /* agp */
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void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev)
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{
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if (drm_core_has_AGP(dev) &&
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dev->agp && dev->agp->cant_use_aperture && map->type == _DRM_AGP)
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map->handle = agp_remap(map->offset, map->size, dev);
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else
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map->handle = pmap_mapdev(map->offset, map->size);
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}
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EXPORT_SYMBOL(drm_core_ioremap);
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void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev)
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{
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if (drm_core_has_AGP(dev) &&
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dev->agp && dev->agp->cant_use_aperture && map->type == _DRM_AGP)
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map->handle = agp_remap(map->offset, map->size, dev);
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else
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map->handle = pmap_mapdev_attr(map->offset, map->size,
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VM_MEMATTR_WRITE_COMBINING);
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}
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EXPORT_SYMBOL(drm_core_ioremap_wc);
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void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev)
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{
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if (!map->handle || !map->size)
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return;
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if (drm_core_has_AGP(dev) &&
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dev->agp && dev->agp->cant_use_aperture && map->type == _DRM_AGP)
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vunmap(map->handle);
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else
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pmap_unmapdev((vm_offset_t)map->handle, map->size);
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}
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EXPORT_SYMBOL(drm_core_ioremapfree);
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