C++ (Cpp) amd_create_page_map Examples

Example #1

static int amd_create_gatt_pages(int nr_tables)
{
	struct amd_page_map **tables;
	struct amd_page_map *entry;
	int retval = 0;
	int i;

	tables = kmalloc((nr_tables + 1) * sizeof(struct amd_page_map *),
			 GFP_KERNEL);
	if (tables == NULL)
		return -ENOMEM;

	memset (tables, 0, sizeof(struct amd_page_map *) * (nr_tables + 1));
	for (i = 0; i < nr_tables; i++) {
		entry = kmalloc(sizeof(struct amd_page_map), GFP_KERNEL);
		if (entry == NULL) {
			retval = -ENOMEM;
			break;
		}
		memset (entry, 0, sizeof(struct amd_page_map));
		tables[i] = entry;
		retval = amd_create_page_map(entry);
		if (retval != 0)
			break;
	}
	amd_irongate_private.num_tables = nr_tables;
	amd_irongate_private.gatt_pages = tables;

	if (retval != 0)
		amd_free_gatt_pages();

	return retval;
}

Example #2

File: amd-k7-agp.c Project: CSCLOG/beaglebone

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;
}

Example #3

File: amd-k7-agp.c Project: DirtyDroidX/android_kernel_htc_m8ul

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;
}