include/asm-arm/arch-orion/io.h

   1 /*
   2  * include/asm-arm/arch-orion/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_ARM_ARCH_IO_H
  12 #define __ASM_ARM_ARCH_IO_H
  13
  14 #include "orion.h"
  15
  16 #define IO_SPACE_LIMIT          0xffffffff
  17 #define IO_SPACE_REMAP          ORION_PCI_SYS_IO_BASE
  18
  19 static inline void __iomem *
  20 __arch_ioremap(unsigned long paddr, size_t size, unsigned int mtype)
  21 {
  22         void __iomem *retval;
  23
  24         if (mtype == MT_DEVICE && size && paddr >= ORION_REGS_PHYS_BASE &&
  25             paddr + size <= ORION_REGS_PHYS_BASE + ORION_REGS_SIZE) {
  26                 retval = (void __iomem *)ORION_REGS_VIRT_BASE +
  27                                 (paddr - ORION_REGS_PHYS_BASE);
  28         } else {
  29                 retval = __arm_ioremap(paddr, size, mtype);
  30         }
  31
  32         return retval;
  33 }
  34
  35 static inline void
  36 __arch_iounmap(void __iomem *addr)
  37 {
  38         if (addr < (void __iomem *)ORION_REGS_VIRT_BASE ||
  39             addr >= (void __iomem *)(ORION_REGS_VIRT_BASE + ORION_REGS_SIZE))
  40                 __iounmap(addr);
  41 }
  42
  43 static inline void __iomem *__io(unsigned long addr)
  44 {
  45         return (void __iomem *)addr;
  46 }
  47
  48 #define __arch_ioremap(p, s, m) __arch_ioremap(p, s, m)
  49 #define __arch_iounmap(a)       __arch_iounmap(a)
  50 #define __io(a)                 __io(a)
  51 #define __mem_pci(a)            (a)
  52
  53
  54 /*****************************************************************************
  55  * Helpers to access Orion registers
  56  ****************************************************************************/
  57 #define orion_read(r)           __raw_readl(r)
  58 #define orion_write(r, val)     __raw_writel(val, r)
  59
  60 /*
  61  * These are not preempt-safe.  Locks, if needed, must be taken
  62  * care of by the caller.
  63  */
  64 #define orion_setbits(r, mask)  orion_write((r), orion_read(r) | (mask))
  65 #define orion_clrbits(r, mask)  orion_write((r), orion_read(r) & ~(mask))
  66
  67
  68 #endif