agp_bridge->gatt_bus_addr = virt_to_bus(page_dir.real); 
agp_bridge->gatt_bus_addr = virt_to_gart(page_dir.real); 
static int ati_create_gatt_table(struct agp_bridge_data *bridge){	struct aper_size_info_lvl2 *value;	ati_page_map page_dir;	unsigned long addr;	int retval;	u32 temp;	int i;	struct aper_size_info_lvl2 *current_size;	value = A_SIZE_LVL2(agp_bridge->current_size);	retval = ati_create_page_map(&page_dir);	if (retval != 0)		return retval;	retval = ati_create_gatt_pages(value->num_entries / 1024);	if (retval != 0) {		ati_free_page_map(&page_dir);		return retval;	}	agp_bridge->gatt_table_real = (u32 *)page_dir.real;	agp_bridge->gatt_table = (u32 __iomem *) page_dir.remapped;	agp_bridge->gatt_bus_addr = virt_to_bus(page_dir.real);	/* Write out the size register */	current_size = A_SIZE_LVL2(agp_bridge->current_size);	if (is_r200()) {		pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);		temp = (((temp & ~(0x0000000e)) | current_size->size_value)			| 0x00000001);		pci_write_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, temp);		pci_read_config_dword(agp_bridge->dev, ATI_RS100_APSIZE, &temp);	} else {		pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);		temp = (((temp & ~(0x0000000e)) | current_size->size_value)			| 0x00000001);		pci_write_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, temp);		pci_read_config_dword(agp_bridge->dev, ATI_RS300_APSIZE, &temp);	}	/*	 * Get the address for the gart region.	 * This is a bus address even on the alpha, b/c its	 * used to program the agp master not the cpu	 */	pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);	addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);	agp_bridge->gart_bus_addr = addr;	/* Calculate the agp offset */	for(i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) {		writel(virt_to_bus(ati_generic_private.gatt_pages[i]->real) | 1,			page_dir.remapped+GET_PAGE_DIR_OFF(addr));		readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr));	/* PCI Posting. */	}	return 0;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/07eee78ea8ba2d0b7b20551c35a3e7dd158d50bb/ati-agp.c/buggy/drivers/char/agp/ati-agp.c