diff options
Diffstat (limited to 'drivers/char/drm/ati_pcigart.c')
| -rw-r--r-- | drivers/char/drm/ati_pcigart.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/drivers/char/drm/ati_pcigart.c b/drivers/char/drm/ati_pcigart.c deleted file mode 100644 index 0aec5ef481b..00000000000 --- a/drivers/char/drm/ati_pcigart.c +++ /dev/null @@ -1,208 +0,0 @@ -/** - * \file ati_pcigart.h - * ATI PCI GART support - * - * \author Gareth Hughes <gareth@valinux.com> - */ - -/* - * 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. - */ - -#include "drmP.h" - -#if PAGE_SIZE == 65536 -# define ATI_PCIGART_TABLE_ORDER 0 -# define ATI_PCIGART_TABLE_PAGES (1 << 0) -#elif PAGE_SIZE == 16384 -# define ATI_PCIGART_TABLE_ORDER 1 -# define ATI_PCIGART_TABLE_PAGES (1 << 1) -#elif 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) -#else -# error - PAGE_SIZE not 64K, 16K, 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 */ - -static unsigned long drm_ati_alloc_pcigart_table( void ) -{ - unsigned long address; - struct page *page; - int i; - DRM_DEBUG( "%s\n", __FUNCTION__ ); - - address = __get_free_pages( GFP_KERNEL, ATI_PCIGART_TABLE_ORDER ); - if ( address == 0UL ) { - return 0; - } - - page = virt_to_page( address ); - - for ( i = 0 ; i < ATI_PCIGART_TABLE_PAGES ; i++, page++ ) { - get_page(page); - SetPageReserved( page ); - } - - DRM_DEBUG( "%s: returning 0x%08lx\n", __FUNCTION__, address ); - return address; -} - -static void drm_ati_free_pcigart_table( unsigned long address ) -{ - struct page *page; - int i; - DRM_DEBUG( "%s\n", __FUNCTION__ ); - - page = virt_to_page( address ); - - for ( i = 0 ; i < ATI_PCIGART_TABLE_PAGES ; i++, page++ ) { - __put_page(page); - ClearPageReserved( page ); - } - - free_pages( address, ATI_PCIGART_TABLE_ORDER ); -} - -int drm_ati_pcigart_cleanup( drm_device_t *dev, - unsigned long addr, - dma_addr_t bus_addr) -{ - drm_sg_mem_t *entry = dev->sg; - unsigned long pages; - int i; - - /* we need to support large memory configurations */ - if ( !entry ) { - DRM_ERROR( "no scatter/gather memory!\n" ); - return 0; - } - - if ( bus_addr ) { - pci_unmap_single(dev->pdev, bus_addr, - ATI_PCIGART_TABLE_PAGES * PAGE_SIZE, - PCI_DMA_TODEVICE); - - pages = ( entry->pages <= ATI_MAX_PCIGART_PAGES ) - ? entry->pages : ATI_MAX_PCIGART_PAGES; - - for ( i = 0 ; i < pages ; i++ ) { - if ( !entry->busaddr[i] ) break; - pci_unmap_single(dev->pdev, entry->busaddr[i], - PAGE_SIZE, PCI_DMA_TODEVICE); - } - } - - if ( addr ) { - drm_ati_free_pcigart_table( addr ); - } - - return 1; -} -EXPORT_SYMBOL(drm_ati_pcigart_cleanup); - -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, page_base, bus_address = 0; - int i, j, ret = 0; - - if ( !entry ) { - DRM_ERROR( "no scatter/gather memory!\n" ); - goto done; - } - - address = drm_ati_alloc_pcigart_table(); - if ( !address ) { - DRM_ERROR( "cannot allocate PCI GART page!\n" ); - goto done; - } - - if ( !dev->pdev ) { - DRM_ERROR( "PCI device unknown!\n" ); - goto done; - } - - bus_address = pci_map_single(dev->pdev, (void *)address, - ATI_PCIGART_TABLE_PAGES * PAGE_SIZE, - PCI_DMA_TODEVICE); - if (bus_address == 0) { - DRM_ERROR( "unable to map PCIGART pages!\n" ); - drm_ati_free_pcigart_table( address ); - address = 0; - goto done; - } - - pci_gart = (u32 *)address; - - pages = ( entry->pages <= ATI_MAX_PCIGART_PAGES ) - ? entry->pages : ATI_MAX_PCIGART_PAGES; - - memset( pci_gart, 0, ATI_MAX_PCIGART_PAGES * sizeof(u32) ); - - for ( i = 0 ; i < pages ; i++ ) { - /* we need to support large memory configurations */ - entry->busaddr[i] = pci_map_single(dev->pdev, - page_address( entry->pagelist[i] ), - PAGE_SIZE, - PCI_DMA_TODEVICE); - if (entry->busaddr[i] == 0) { - DRM_ERROR( "unable to map PCIGART pages!\n" ); - drm_ati_pcigart_cleanup( dev, address, bus_address ); - address = 0; - bus_address = 0; - goto done; - } - 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; - } - } - - ret = 1; - -#if defined(__i386__) || defined(__x86_64__) - wbinvd(); -#else - mb(); -#endif - -done: - *addr = address; - *bus_addr = bus_address; - return ret; -} -EXPORT_SYMBOL(drm_ati_pcigart_init); |