116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/* ati_pcigart.h -- ATI PCI GART support -*- linux-c -*-
|
|
* Created: Wed Dec 13 21:52:19 2000 by gareth@valinux.com */
|
|
/*-
|
|
* 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
|
|
* PRECISION INSIGHT 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.
|
|
*
|
|
* Authors:
|
|
* Gareth Hughes <gareth@valinux.com>
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include "dev/drm/drmP.h"
|
|
|
|
#if PAGE_SIZE == 8192
|
|
# define ATI_PCIGART_TABLE_ORDER 2
|
|
# define ATI_PCIGART_TABLE_PAGES (1 << 2)
|
|
#elif PAGE_SIZE == 4096
|
|
# define ATI_PCIGART_TABLE_ORDER 3
|
|
# define ATI_PCIGART_TABLE_PAGES (1 << 3)
|
|
#elif
|
|
# error - PAGE_SIZE not 8K or 4K
|
|
#endif
|
|
|
|
# define ATI_MAX_PCIGART_PAGES 8192 /* 32 MB aperture, 4K pages */
|
|
# define ATI_PCIGART_PAGE_SIZE 4096 /* PCI GART page size */
|
|
|
|
int DRM(ati_pcigart_init)( drm_device_t *dev,
|
|
unsigned long *addr,
|
|
dma_addr_t *bus_addr)
|
|
{
|
|
drm_sg_mem_t *entry = dev->sg;
|
|
unsigned long address = 0;
|
|
unsigned long pages;
|
|
u32 *pci_gart=0, page_base, bus_address = 0;
|
|
int i, j, ret = 0;
|
|
|
|
if ( !entry ) {
|
|
DRM_ERROR( "no scatter/gather memory!\n" );
|
|
goto done;
|
|
}
|
|
|
|
address = (long)contigmalloc((1 << ATI_PCIGART_TABLE_ORDER) * PAGE_SIZE,
|
|
DRM(M_DRM), M_NOWAIT, 0ul, 0xfffffffful, PAGE_SIZE, 0);
|
|
if ( !address ) {
|
|
DRM_ERROR( "cannot allocate PCI GART page!\n" );
|
|
goto done;
|
|
}
|
|
|
|
/* XXX: we need to busdma this */
|
|
bus_address = vtophys( address );
|
|
|
|
pci_gart = (u32 *)address;
|
|
|
|
pages = ( entry->pages <= ATI_MAX_PCIGART_PAGES )
|
|
? entry->pages : ATI_MAX_PCIGART_PAGES;
|
|
|
|
bzero( pci_gart, ATI_MAX_PCIGART_PAGES * sizeof(u32) );
|
|
|
|
for ( i = 0 ; i < pages ; i++ ) {
|
|
entry->busaddr[i] = vtophys( entry->handle + (i*PAGE_SIZE) );
|
|
page_base = (u32) entry->busaddr[i];
|
|
|
|
for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) {
|
|
*pci_gart++ = cpu_to_le32( page_base );
|
|
page_base += ATI_PCIGART_PAGE_SIZE;
|
|
}
|
|
}
|
|
|
|
DRM_MEMORYBARRIER();
|
|
|
|
ret = 1;
|
|
|
|
done:
|
|
*addr = address;
|
|
*bus_addr = bus_address;
|
|
return ret;
|
|
}
|
|
|
|
int DRM(ati_pcigart_cleanup)( drm_device_t *dev,
|
|
unsigned long addr,
|
|
dma_addr_t bus_addr)
|
|
{
|
|
drm_sg_mem_t *entry = dev->sg;
|
|
|
|
/* we need to support large memory configurations */
|
|
if ( !entry ) {
|
|
DRM_ERROR( "no scatter/gather memory!\n" );
|
|
return 0;
|
|
}
|
|
|
|
#if __FreeBSD_version > 500000
|
|
contigfree( (void *)addr, (1 << ATI_PCIGART_TABLE_ORDER) * PAGE_SIZE, DRM(M_DRM)); /* Not available on 4.x */
|
|
#endif
|
|
return 1;
|
|
}
|