2 * arch/arm/mach-orion5x/include/mach/io.h
4 * Tzachi Perelstein <tzachi@marvell.com>
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.
11 #ifndef __ASM_ARCH_IO_H
12 #define __ASM_ARCH_IO_H
16 #define IO_SPACE_LIMIT 0xffffffff
18 static inline void __iomem *
19 __arch_ioremap(unsigned long paddr, size_t size, unsigned int mtype)
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;
27 retval = __arm_ioremap(paddr, size, mtype);
34 __arch_iounmap(void __iomem *addr)
36 if (addr < (void __iomem *)ORION5X_REGS_VIRT_BASE ||
37 addr >= (void __iomem *)(ORION5X_REGS_VIRT_BASE + ORION5X_REGS_SIZE))
41 static inline void __iomem *__io(unsigned long addr)
43 return (void __iomem *)addr;
46 #define __arch_ioremap(p, s, m) __arch_ioremap(p, s, m)
47 #define __arch_iounmap(a) __arch_iounmap(a)
48 #define __io(a) __io(a)
49 #define __mem_pci(a) (a)
52 /*****************************************************************************
53 * Helpers to access Orion registers
54 ****************************************************************************/
56 * These are not preempt-safe. Locks, if needed, must be taken
57 * care of by the caller.
59 #define orion5x_setbits(r, mask) writel(readl(r) | (mask), (r))
60 #define orion5x_clrbits(r, mask) writel(readl(r) & ~(mask), (r))