1/* 2 * arch/arm/mach-orion5x/include/mach/io.h 3 * 4 * Tzachi Perelstein <tzachi@marvell.com> 5 * 6 * This file is licensed under the terms of the GNU General Public 7 * License version 2. This program is licensed "as is" without any 8 * warranty of any kind, whether express or implied. 9 */ 10 11#ifndef __ASM_ARCH_IO_H 12#define __ASM_ARCH_IO_H 13 14#include "orion5x.h" 15 16#define IO_SPACE_LIMIT 0xffffffff 17 18static inline void __iomem * 19__arch_ioremap(unsigned long paddr, size_t size, unsigned int mtype) 20{ 21 void __iomem *retval; 22 unsigned long offs = paddr - ORION5X_REGS_PHYS_BASE; 23 if (mtype == MT_DEVICE && size && offs < ORION5X_REGS_SIZE && 24 size <= ORION5X_REGS_SIZE && offs + size <= ORION5X_REGS_SIZE) { 25 retval = (void __iomem *)ORION5X_REGS_VIRT_BASE + offs; 26 } else { 27 retval = __arm_ioremap(paddr, size, mtype); 28 } 29 30 return retval; 31} 32 33static inline void 34__arch_iounmap(void __iomem *addr) 35{ 36 if (addr < (void __iomem *)ORION5X_REGS_VIRT_BASE || 37 addr >= (void __iomem *)(ORION5X_REGS_VIRT_BASE + ORION5X_REGS_SIZE)) 38 __iounmap(addr); 39} 40 41#define __arch_ioremap(p, s, m) __arch_ioremap(p, s, m) 42#define __arch_iounmap(a) __arch_iounmap(a) 43#define __io(a) __typesafe_io(a) 44#define __mem_pci(a) (a) 45 46 47/***************************************************************************** 48 * Helpers to access Orion registers 49 ****************************************************************************/ 50/* 51 * These are not preempt-safe. Locks, if needed, must be taken 52 * care of by the caller. 53 */ 54#define orion5x_setbits(r, mask) writel(readl(r) | (mask), (r)) 55#define orion5x_clrbits(r, mask) writel(readl(r) & ~(mask), (r)) 56 57 58#endif 59