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1d0d7f3ee4
locking, and the apparently unnecessary locking for -stable has been removed. This may fix issues with missed interrupts since April, which manifested themselves as slowdowns or hangs in radeon, in particular. Many cleanups also took place. In the shared code, there are improvements to r128 driver stability.
116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/* ati_pcigart.h -- ATI PCI GART support -*- linux-c -*-
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* Created: Wed Dec 13 21:52:19 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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*
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* $FreeBSD$
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*/
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#include "dev/drm/drmP.h"
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#if PAGE_SIZE == 8192
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# define ATI_PCIGART_TABLE_ORDER 2
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# define ATI_PCIGART_TABLE_PAGES (1 << 2)
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#elif PAGE_SIZE == 4096
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# define ATI_PCIGART_TABLE_ORDER 3
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# define ATI_PCIGART_TABLE_PAGES (1 << 3)
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#elif
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# error - PAGE_SIZE not 8K or 4K
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#endif
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# define ATI_MAX_PCIGART_PAGES 8192 /* 32 MB aperture, 4K pages */
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# define ATI_PCIGART_PAGE_SIZE 4096 /* PCI GART page size */
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int DRM(ati_pcigart_init)( drm_device_t *dev,
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unsigned long *addr,
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dma_addr_t *bus_addr)
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{
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drm_sg_mem_t *entry = dev->sg;
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unsigned long address = 0;
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unsigned long pages;
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u32 *pci_gart=0, page_base, bus_address = 0;
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int i, j, ret = 0;
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if ( !entry ) {
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DRM_ERROR( "no scatter/gather memory!\n" );
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goto done;
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}
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address = (long)contigmalloc((1 << ATI_PCIGART_TABLE_ORDER) * PAGE_SIZE,
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DRM(M_DRM), M_NOWAIT, 0ul, 0xfffffffful, PAGE_SIZE, 0);
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if ( !address ) {
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DRM_ERROR( "cannot allocate PCI GART page!\n" );
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goto done;
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}
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/* XXX: we need to busdma this */
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bus_address = vtophys( address );
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pci_gart = (u32 *)address;
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pages = ( entry->pages <= ATI_MAX_PCIGART_PAGES )
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? entry->pages : ATI_MAX_PCIGART_PAGES;
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bzero( pci_gart, ATI_MAX_PCIGART_PAGES * sizeof(u32) );
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for ( i = 0 ; i < pages ; i++ ) {
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entry->busaddr[i] = vtophys( entry->handle + (i*PAGE_SIZE) );
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page_base = (u32) entry->busaddr[i];
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for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) {
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*pci_gart++ = cpu_to_le32( page_base );
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page_base += ATI_PCIGART_PAGE_SIZE;
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}
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}
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DRM_MEMORYBARRIER();
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ret = 1;
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done:
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*addr = address;
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*bus_addr = bus_address;
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return ret;
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}
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int DRM(ati_pcigart_cleanup)( drm_device_t *dev,
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unsigned long addr,
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dma_addr_t bus_addr)
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{
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drm_sg_mem_t *entry = dev->sg;
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/* we need to support large memory configurations */
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if ( !entry ) {
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DRM_ERROR( "no scatter/gather memory!\n" );
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return 0;
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}
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#if __FreeBSD_version > 500000
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contigfree( (void *)addr, (1 << ATI_PCIGART_TABLE_ORDER) * PAGE_SIZE, DRM(M_DRM)); /* Not available on 4.x */
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#endif
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return 1;
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}
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