33 	unsigned long *real;  member
52 	page_map->real = (unsigned long *) __get_free_page(GFP_KERNEL);  in serverworks_create_page_map()
53 	if (page_map->real == NULL) {  in serverworks_create_page_map()
54 		return -ENOMEM;  in serverworks_create_page_map()
57 	set_memory_uc((unsigned long)page_map->real, 1);  in serverworks_create_page_map()
58 	page_map->remapped = page_map->real;  in serverworks_create_page_map()
61 		writel(agp_bridge->scratch_page, page_map->remapped+i);  in serverworks_create_page_map()
69 	set_memory_wb((unsigned long)page_map->real, 1);  in serverworks_free_page_map()
70 	free_page((unsigned long) page_map->real);  in serverworks_free_page_map()
83 			if (entry->real != NULL) {  in serverworks_free_gatt_pages()
102 		return -ENOMEM;  in serverworks_create_gatt_pages()
107 			retval = -ENOMEM;  in serverworks_create_gatt_pages()
123 	GET_PAGE_DIR_IDX(addr)]->remapped)
130 #define GET_PAGE_DIR_IDX(addr) (GET_PAGE_DIR_OFF(addr) - \
131 	GET_PAGE_DIR_OFF(agp_bridge->gart_bus_addr))
146 	value = A_SIZE_LVL2(agp_bridge->current_size);  in serverworks_create_gatt_table()
158 		writel(agp_bridge->scratch_page, serverworks_private.scratch_dir.remapped+i);  in serverworks_create_gatt_table()
159 		writel(virt_to_phys(serverworks_private.scratch_dir.real) | 1, page_dir.remapped+i);  in serverworks_create_gatt_table()
162 	retval = serverworks_create_gatt_pages(value->num_entries / 1024);  in serverworks_create_gatt_table()
169 	agp_bridge->gatt_table_real = (u32 *)page_dir.real;  in serverworks_create_gatt_table()
170 	agp_bridge->gatt_table = (u32 __iomem *)page_dir.remapped;  in serverworks_create_gatt_table()
171 	agp_bridge->gatt_bus_addr = virt_to_phys(page_dir.real);  in serverworks_create_gatt_table()
178 	pci_read_config_dword(agp_bridge->dev,serverworks_private.gart_addr_ofs,&temp);  in serverworks_create_gatt_table()
179 	agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);  in serverworks_create_gatt_table()
182 	for (i = 0; i < value->num_entries / 1024; i++)  in serverworks_create_gatt_table()
183 		writel(virt_to_phys(serverworks_private.gatt_pages[i]->real)|1, page_dir.remapped+i);  in serverworks_create_gatt_table()
192 	page_dir.real = (unsigned long *)agp_bridge->gatt_table_real;  in serverworks_free_gatt_table()
193 	page_dir.remapped = (unsigned long __iomem *)agp_bridge->gatt_table;  in serverworks_free_gatt_table()
208 	values = A_SIZE_LVL2(agp_bridge->driver->aperture_sizes);  in serverworks_fetch_size()
209 	pci_read_config_dword(agp_bridge->dev,serverworks_private.gart_addr_ofs,&temp);  in serverworks_fetch_size()
210 	pci_write_config_dword(agp_bridge->dev,serverworks_private.gart_addr_ofs,  in serverworks_fetch_size()
212 	pci_read_config_dword(agp_bridge->dev,serverworks_private.gart_addr_ofs,&temp2);  in serverworks_fetch_size()
213 	pci_write_config_dword(agp_bridge->dev,serverworks_private.gart_addr_ofs,temp);  in serverworks_fetch_size()
216 	for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {  in serverworks_fetch_size()
218 			agp_bridge->previous_size =  in serverworks_fetch_size()
219 			    agp_bridge->current_size = (void *) (values + i);  in serverworks_fetch_size()
221 			agp_bridge->aperture_size_idx = i;  in serverworks_fetch_size()
245 			dev_err(&serverworks_private.svrwrks_dev->dev,  in serverworks_tlbflush()
256 			dev_err(&serverworks_private.svrwrks_dev->dev,  in serverworks_tlbflush()
270 	pci_read_config_dword(agp_bridge->dev, serverworks_private.mm_addr_ofs, &temp);  in serverworks_configure()
274 		dev_err(&agp_bridge->dev->dev, "can't ioremap(%#x)\n", temp);  in serverworks_configure()
275 		return -ENOMEM;  in serverworks_configure()
281 	writel(agp_bridge->gatt_bus_addr, serverworks_private.registers+SVWRKS_GATTBASE);  in serverworks_configure()
295 	agp_bridge->capndx = pci_find_capability(serverworks_private.svrwrks_dev, PCI_CAP_ID_AGP);  in serverworks_configure()
299 			      agp_bridge->capndx+PCI_AGP_STATUS, &agp_bridge->mode);  in serverworks_configure()
301 	pci_read_config_byte(agp_bridge->dev, SVWRKS_CACHING, &enable_reg);  in serverworks_configure()
303 	pci_write_config_byte(agp_bridge->dev, SVWRKS_CACHING, enable_reg);  in serverworks_configure()
305 	pci_read_config_byte(agp_bridge->dev, SVWRKS_FEATURE, &enable_reg);  in serverworks_configure()
307 	pci_write_config_byte(agp_bridge->dev,SVWRKS_FEATURE, enable_reg);  in serverworks_configure()
324 	num_entries = A_SIZE_LVL2(agp_bridge->current_size)->num_entries;  in serverworks_insert_memory()
326 	if (type != 0 || mem->type != 0) {  in serverworks_insert_memory()
327 		return -EINVAL;  in serverworks_insert_memory()
329 	if ((pg_start + mem->page_count) > num_entries) {  in serverworks_insert_memory()
330 		return -EINVAL;  in serverworks_insert_memory()
334 	while (j < (pg_start + mem->page_count)) {  in serverworks_insert_memory()
335 		addr = (j * PAGE_SIZE) + agp_bridge->gart_bus_addr;  in serverworks_insert_memory()
338 			return -EBUSY;  in serverworks_insert_memory()
342 	if (!mem->is_flushed) {  in serverworks_insert_memory()
344 		mem->is_flushed = true;  in serverworks_insert_memory()
347 	for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {  in serverworks_insert_memory()
348 		addr = (j * PAGE_SIZE) + agp_bridge->gart_bus_addr;  in serverworks_insert_memory()
350 		writel(agp_bridge->driver->mask_memory(agp_bridge,  in serverworks_insert_memory()
351 				page_to_phys(mem->pages[i]), mem->type),  in serverworks_insert_memory()
365 	if (type != 0 || mem->type != 0) {  in serverworks_remove_memory()
366 		return -EINVAL;  in serverworks_remove_memory()
372 	for (i = pg_start; i < (mem->page_count + pg_start); i++) {  in serverworks_remove_memory()
373 		addr = (i * PAGE_SIZE) + agp_bridge->gart_bus_addr;  in serverworks_remove_memory()
375 		writel(agp_bridge->scratch_page, cur_gatt+GET_GATT_OFF(addr));  in serverworks_remove_memory()
403 			      bridge->capndx + PCI_AGP_STATUS,  in serverworks_agp_enable()
414 			       bridge->capndx + PCI_AGP_COMMAND,  in serverworks_agp_enable()
456 	switch (pdev->device) {  in agp_serverworks_probe()
458 		dev_err(&pdev->dev, "ServerWorks CNB20HE is unsupported due to lack of documentation\n");  in agp_serverworks_probe()
459 		return -ENODEV;  in agp_serverworks_probe()
468 			dev_err(&pdev->dev, "unsupported Serverworks chipset "  in agp_serverworks_probe()
469 				"[%04x/%04x]\n", pdev->vendor, pdev->device);  in agp_serverworks_probe()
470 		return -ENODEV;  in agp_serverworks_probe()
474 	bridge_dev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus),  in agp_serverworks_probe()
475 			(unsigned int)pdev->bus->number,  in agp_serverworks_probe()
478 		dev_info(&pdev->dev, "can't find secondary device\n");  in agp_serverworks_probe()
479 		return -ENODEV;  in agp_serverworks_probe()
489 			dev_info(&pdev->dev, "64 bit aperture address, "  in agp_serverworks_probe()
491 			return -ENODEV;  in agp_serverworks_probe()
502 			dev_info(&pdev->dev, "64 bit MMIO address, but top "  in agp_serverworks_probe()
504 			return -ENODEV;  in agp_serverworks_probe()
510 		return -ENOMEM;  in agp_serverworks_probe()
512 	bridge->driver = &sworks_driver;  in agp_serverworks_probe()
513 	bridge->dev_private_data = &serverworks_private;  in agp_serverworks_probe()
514 	bridge->dev = pci_dev_get(pdev);  in agp_serverworks_probe()
524 	pci_dev_put(bridge->dev);  in agp_serverworks_remove()
546 	.name		= "agpgart-serverworks",
555 		return -EINVAL;  in agp_serverworks_init()