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
127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
/* drm_scatter.h -- IOCTLs to manage scatter/gather memory -*- linux-c -*-
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* Created: Mon Dec 18 23:20:54 2000 by gareth@valinux.com */
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/*-
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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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* PRECISION INSIGHT 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 OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Gareth Hughes <gareth@valinux.com>
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* Eric Anholt <anholt@FreeBSD.org>
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*
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* $FreeBSD$
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*/
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#include "dev/drm/drmP.h"
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#define DEBUG_SCATTER 0
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void drm_sg_cleanup(drm_sg_mem_t *entry)
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{
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free(entry->virtual, M_DRM);
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free(entry->busaddr, M_DRM);
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free(entry, M_DRM);
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}
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int drm_sg_alloc(DRM_IOCTL_ARGS)
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{
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DRM_DEVICE;
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drm_scatter_gather_t request;
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drm_sg_mem_t *entry;
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unsigned long pages;
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DRM_DEBUG( "%s\n", __FUNCTION__ );
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if ( dev->sg )
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return EINVAL;
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DRM_COPY_FROM_USER_IOCTL(request, (drm_scatter_gather_t *)data,
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sizeof(request) );
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entry = malloc(sizeof(*entry), M_DRM, M_WAITOK | M_ZERO);
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if ( !entry )
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return ENOMEM;
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pages = round_page(request.size) / PAGE_SIZE;
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DRM_DEBUG( "sg size=%ld pages=%ld\n", request.size, pages );
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entry->pages = pages;
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entry->busaddr = malloc(pages * sizeof(*entry->busaddr), M_DRM,
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M_WAITOK | M_ZERO);
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if ( !entry->busaddr ) {
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drm_sg_cleanup(entry);
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return ENOMEM;
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}
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entry->virtual = malloc(pages << PAGE_SHIFT, M_DRM, M_WAITOK | M_ZERO);
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if ( !entry->virtual ) {
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drm_sg_cleanup(entry);
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return ENOMEM;
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}
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entry->handle = (unsigned long)entry->virtual;
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DRM_DEBUG( "sg alloc handle = %08lx\n", entry->handle );
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DRM_DEBUG( "sg alloc virtual = %p\n", entry->virtual );
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request.handle = entry->handle;
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DRM_COPY_TO_USER_IOCTL( (drm_scatter_gather_t *)data,
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request,
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sizeof(request) );
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DRM_LOCK();
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if (dev->sg) {
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DRM_UNLOCK();
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drm_sg_cleanup(entry);
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return EINVAL;
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}
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dev->sg = entry;
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DRM_UNLOCK();
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return 0;
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}
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int drm_sg_free(DRM_IOCTL_ARGS)
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{
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DRM_DEVICE;
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drm_scatter_gather_t request;
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drm_sg_mem_t *entry;
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DRM_COPY_FROM_USER_IOCTL( request, (drm_scatter_gather_t *)data,
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sizeof(request) );
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DRM_LOCK();
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entry = dev->sg;
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dev->sg = NULL;
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DRM_UNLOCK();
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if ( !entry || entry->handle != request.handle )
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return EINVAL;
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DRM_DEBUG( "sg free virtual = %p\n", entry->virtual );
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drm_sg_cleanup(entry);
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return 0;
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}
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