/* sis_ds.h -- Private header for Direct Rendering Manager -*- linux-c -*- * Created: Mon Jan 4 10:05:05 1999 by sclin@sis.com.tw * * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan. * 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: * Sung-Ching Lin * */ #ifndef _sis_ds_h_ #define _sis_ds_h_ /* Set Data Structure */ #define SET_SIZE 5000 #define SD_MALLOC(s) malloc( s, DRM(M_DRM), M_NOWAIT ) #define SD_FREE(s) free( s, DRM(M_DRM) ) typedef unsigned int ITEM_TYPE; typedef struct { ITEM_TYPE val; int alloc_next, free_next; } list_item_t; typedef struct { int alloc; int free; int trace; list_item_t list[SET_SIZE]; } set_t; set_t *setInit(void); int setAdd(set_t *set, ITEM_TYPE item); int setDel(set_t *set, ITEM_TYPE item); int setFirst(set_t *set, ITEM_TYPE *item); int setNext(set_t *set, ITEM_TYPE *item); int setDestroy(set_t *set); #endif /* * GLX Hardware Device Driver common code * Copyright (C) 1999 Keith Whitwell * * 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 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 * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS 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. * */ #ifndef MM_INC #define MM_INC struct mem_block_t { struct mem_block_t *next; struct mem_block_t *heap; int ofs,size; int align; int free:1; int reserved:1; }; typedef struct mem_block_t TMemBlock; typedef struct mem_block_t *PMemBlock; /* a heap is just the first block in a chain */ typedef struct mem_block_t memHeap_t; static __inline__ int mmBlockSize(PMemBlock b) { return b->size; } static __inline__ int mmOffset(PMemBlock b) { return b->ofs; } static __inline__ void mmMarkReserved(PMemBlock b) { b->reserved = 1; } /* * input: total size in bytes * return: a heap pointer if OK, NULL if error */ memHeap_t *mmInit( int ofs, int size ); memHeap_t *mmAddRange( memHeap_t *heap, int ofs, int size ); /* * Allocate 'size' bytes with 2^align2 bytes alignment, * restrict the search to free memory after 'startSearch' * depth and back buffers should be in different 4mb banks * to get better page hits if possible * input: size = size of block * align2 = 2^align2 bytes alignment * startSearch = linear offset from start of heap to begin search * return: pointer to the allocated block, 0 if error */ PMemBlock mmAllocMem( memHeap_t *heap, int size, int align2, int startSearch ); /* * Free block starts at offset * input: pointer to a block * return: 0 if OK, -1 if error */ int mmFreeMem( PMemBlock b ); /* * Reserve 'size' bytes block start at offset * This is used to prevent allocation of memory already used * by the X server for the front buffer, pixmaps, and cursor * input: size, offset * output: 0 if OK, -1 if error */ int mmReserveMem( memHeap_t *heap, int offset,int size ); int mmFreeReserved( memHeap_t *heap, int offset ); /* * destroy MM */ void mmDestroy( memHeap_t *mmInit ); /* For debuging purpose. */ void mmDumpMemInfo( memHeap_t *mmInit ); #endif 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 
/**
 * \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.
 */

#define __NO_VERSION__
#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++ ) {
		atomic_inc( &page->count );
		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++ ) {
		atomic_dec( &page->count );
		ClearPageReserved( page );
	}

	free_pages( address, ATI_PCIGART_TABLE_ORDER );
}

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(__AMD64__)
	asm volatile ( "wbinvd" ::: "memory" );
#else
	mb();
#endif

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;
	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;
}
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