static int amd_free_gatt_table(void) { struct amd_page_map page_dir; page_dir.real = (unsigned long *)agp_bridge->gatt_table_real; page_dir.remapped = (unsigned long __iomem *)agp_bridge->gatt_table; amd_free_gatt_pages(); amd_free_page_map(&page_dir); return 0; }
static int amd_create_gatt_table(struct agp_bridge_data *bridge) { struct aper_size_info_lvl2 *value; struct amd_page_map page_dir; unsigned long __iomem *cur_gatt; unsigned long addr; int retval; u32 temp; int i; value = A_SIZE_LVL2(agp_bridge->current_size); retval = amd_create_page_map(&page_dir); if (retval != 0) return retval; retval = amd_create_gatt_pages(value->num_entries / 1024); if (retval != 0) { amd_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_phys(page_dir.real); /* 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_phys(amd_irongate_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. */ } for (i = 0; i < value->num_entries; i++) { addr = (i * PAGE_SIZE) + agp_bridge->gart_bus_addr; cur_gatt = GET_GATT(addr); writel(agp_bridge->scratch_page, cur_gatt+GET_GATT_OFF(addr)); readl(cur_gatt+GET_GATT_OFF(addr)); /* PCI Posting. */ } return 0; }
static int amd_create_gatt_table(struct agp_bridge_data *bridge) { struct aper_size_info_lvl2 *value; struct amd_page_map page_dir; unsigned long __iomem *cur_gatt; unsigned long addr; int retval; u32 temp; int i; value = A_SIZE_LVL2(agp_bridge->current_size); retval = amd_create_page_map(&page_dir); if (retval != 0) return retval; retval = amd_create_gatt_pages(value->num_entries / 1024); if (retval != 0) { amd_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_phys(page_dir.real); pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp); addr = (temp & PCI_BASE_ADDRESS_MEM_MASK); agp_bridge->gart_bus_addr = addr; for (i = 0; i < value->num_entries / 1024; i++, addr += 0x00400000) { writel(virt_to_phys(amd_irongate_private.gatt_pages[i]->real) | 1, page_dir.remapped+GET_PAGE_DIR_OFF(addr)); readl(page_dir.remapped+GET_PAGE_DIR_OFF(addr)); } for (i = 0; i < value->num_entries; i++) { addr = (i * PAGE_SIZE) + agp_bridge->gart_bus_addr; cur_gatt = GET_GATT(addr); writel(agp_bridge->scratch_page, cur_gatt+GET_GATT_OFF(addr)); readl(cur_gatt+GET_GATT_OFF(addr)); } return 0; }
static void amd_free_gatt_pages(void) { int i; struct amd_page_map **tables; struct amd_page_map *entry; tables = amd_irongate_private.gatt_pages; for (i = 0; i < amd_irongate_private.num_tables; i++) { entry = tables[i]; if (entry != NULL) { if (entry->real != NULL) amd_free_page_map(entry); kfree(entry); } } kfree(tables); amd_irongate_private.gatt_pages = NULL; }