graphics/radeon/PCI_GART.c

31 createGARTBuffer(GART_info *gart, size_t size)
35 	gart->buffer.size = size = (size + B_PAGE_SIZE - 1) & ~(B_PAGE_SIZE - 1);
51 	gart->buffer.area = create_area("Radeon PCI GART buffer",
52 		&gart->buffer.ptr, B_ANY_KERNEL_ADDRESS,
56 	if (gart->buffer.area < 0) {
58 			strerror(gart->buffer.area));
59 		return gart->buffer.area;
62 	gart->buffer.unaligned_area = -1;
64 	memset( gart->buffer.ptr, 0, size );
71 static status_t createGARTBuffer( GART_info *gart, size_t size )
78 	gart->buffer.size = size = (size + B_PAGE_SIZE - 1) & ~(B_PAGE_SIZE - 1);
85 	gart->buffer.unaligned_area = create_area( "Radeon PCI GART buffer",
90 	if (gart->buffer.unaligned_area < 0) {
92 			strerror( gart->buffer.unaligned_area ));
93 		return gart->buffer.unaligned_area;
103 	gart->buffer.area = map_physical_memory( "Radeon aligned PCI GART buffer",
106 		B_READ_AREA | B_WRITE_AREA, &gart->buffer.ptr );
108 	if( gart->buffer.area < 0 ) {
110 		gart->buffer.area = map_physical_memory( "Radeon aligned PCI GART buffer",
113 			B_READ_AREA | B_WRITE_AREA, &gart->buffer.ptr );
116 	if( gart->buffer.area < 0 ) {
118 		delete_area( gart->buffer.unaligned_area );
119 		gart->buffer.unaligned_area = -1;
120 		return gart->buffer.area;
123 	memset( gart->buffer.ptr, 0, size );
131 static status_t initGATT( GART_info *gart )
144 	num_pages = (gart->buffer.size + B_PAGE_SIZE - 1) & ~(B_PAGE_SIZE - 1);
147 	gart->GATT.area = create_area("Radeon GATT", (void **)&gart->GATT.ptr,
156 	if (gart->GATT.area < 0) {
158 			strerror(gart->GATT.area));
159 		return gart->GATT.area;
162 	get_memory_map(gart->GATT.ptr, B_PAGE_SIZE, PTB_map, 1);
163 	gart->GATT.phys = PTB_map[0].address;
165 	SHOW_INFO(3, "GATT_ptr=%p, GATT_phys=%p", gart->GATT.ptr,
166 		(void *)gart->GATT.phys);
169 	memset(gart->GATT.ptr, 0, num_pages * sizeof(uint32));
185 	get_memory_map( gart->buffer.ptr, gart->buffer.size, map, map_count );
189 	gatt_entry = gart->GATT.ptr;
211 		delete_area( gart->GATT.area );
212 		gart->GATT.area = -1;
221 	clear_caches( gart->GATT.ptr, num_pages * sizeof( uint32 ),
236 static void destroyGARTBuffer( GART_info *gart )
238 	if( gart->buffer.area > 0 )
239 		delete_area( gart->buffer.area );
241 	if( gart->buffer.unaligned_area > 0 )
242 		delete_area( gart->buffer.unaligned_area );
244 	gart->buffer.area = gart->buffer.unaligned_area = -1;
249 static void destroyGATT( GART_info *gart )
251 	if( gart->GATT.area > 0 )
252 		delete_area( gart->GATT.area );
254 	gart->GATT.area = -1;