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/*
* arch/arm/mach-orion5x/include/mach/io.h
*
* Tzachi Perelstein <tzachi@marvell.com>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef __ASM_ARCH_IO_H
#define __ASM_ARCH_IO_H
#include "orion5x.h"
#define IO_SPACE_LIMIT 0xffffffff
static inline void __iomem *
__arch_ioremap(unsigned long paddr, size_t size, unsigned int mtype)
{
void __iomem *retval;
unsigned long offs = paddr - ORION5X_REGS_PHYS_BASE;
if (mtype == MT_DEVICE && size && offs < ORION5X_REGS_SIZE &&
size <= ORION5X_REGS_SIZE && offs + size <= ORION5X_REGS_SIZE) {
retval = (void __iomem *)ORION5X_REGS_VIRT_BASE + offs;
} else {
retval = __arm_ioremap(paddr, size, mtype);
}
return retval;
}
static inline void
__arch_iounmap(void __iomem *addr)
{
if (addr < (void __iomem *)ORION5X_REGS_VIRT_BASE ||
addr >= (void __iomem *)(ORION5X_REGS_VIRT_BASE + ORION5X_REGS_SIZE))
__iounmap(addr);
}
static inline void __iomem *__io(unsigned long addr)
{
return (void __iomem *)addr;
}
#define __arch_ioremap(p, s, m) __arch_ioremap(p, s, m)
#define __arch_iounmap(a) __arch_iounmap(a)
#define __io(a) __io(a)
#define __mem_pci(a) (a)
/*****************************************************************************
* Helpers to access Orion registers
****************************************************************************/
/*
* These are not preempt-safe. Locks, if needed, must be taken
* care of by the caller.
*/
#define orion5x_setbits(r, mask) writel(readl(r) | (mask), (r))
#define orion5x_clrbits(r, mask) writel(readl(r) & ~(mask), (r))
#endif
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