| /* |
| * Copyright (C) 2014 Altera Corporation |
| * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch> |
| * Copyright (C) 2004 Microtronix Datacom Ltd. |
| * |
| * This file is subject to the terms and conditions of the GNU General Public |
| * License. See the file "COPYING" in the main directory of this archive |
| * for more details. |
| */ |
| |
| #ifndef _ASM_NIOS2_IO_H |
| #define _ASM_NIOS2_IO_H |
| |
| #include <linux/types.h> |
| #include <asm/pgtable-bits.h> |
| |
| /* PCI is not supported in nios2, set this to 0. */ |
| #define IO_SPACE_LIMIT 0 |
| |
| #define readb_relaxed(addr) readb(addr) |
| #define readw_relaxed(addr) readw(addr) |
| #define readl_relaxed(addr) readl(addr) |
| |
| #define writeb_relaxed(x, addr) writeb(x, addr) |
| #define writew_relaxed(x, addr) writew(x, addr) |
| #define writel_relaxed(x, addr) writel(x, addr) |
| |
| void __iomem *ioremap(unsigned long physaddr, unsigned long size); |
| void iounmap(void __iomem *addr); |
| |
| /* Pages to physical address... */ |
| #define page_to_phys(page) virt_to_phys(page_to_virt(page)) |
| |
| /* Macros used for converting between virtual and physical mappings. */ |
| #define phys_to_virt(vaddr) \ |
| ((void *)((unsigned long)(vaddr) | CONFIG_NIOS2_KERNEL_REGION_BASE)) |
| /* Clear top 3 bits */ |
| #define virt_to_phys(vaddr) \ |
| ((unsigned long)((unsigned long)(vaddr) & ~0xE0000000)) |
| |
| #include <asm-generic/io.h> |
| |
| #endif /* _ASM_NIOS2_IO_H */ |
