include/asm-arm/arch-orion5x/io.h

   1 /*
   2  * include/asm-arm/arch-orion5x/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 #define IO_SPACE_REMAP          ORION5X_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         unsigned long offs = paddr - ORION5X_REGS_PHYS_BASE;
  24         if (mtype == MT_DEVICE && size && offs < ORION5X_REGS_SIZE &&
  25             size <= ORION5X_REGS_SIZE && offs + size <= ORION5X_REGS_SIZE) {
  26                 retval = (void __iomem *)ORION5X_REGS_VIRT_BASE + offs;
  27         } else {
  28                 retval = __arm_ioremap(paddr, size, mtype);
  29         }
  30
  31         return retval;
  32 }
  33
  34 static inline void
  35 __arch_iounmap(void __iomem *addr)
  36 {
  37         if (addr < (void __iomem *)ORION5X_REGS_VIRT_BASE ||
  38             addr >= (void __iomem *)(ORION5X_REGS_VIRT_BASE + ORION5X_REGS_SIZE))
  39                 __iounmap(addr);
  40 }
  41
  42 static inline void __iomem *__io(unsigned long addr)
  43 {
  44         return (void __iomem *)addr;
  45 }
  46
  47 #define __arch_ioremap(p, s, m) __arch_ioremap(p, s, m)
  48 #define __arch_iounmap(a)       __arch_iounmap(a)
  49 #define __io(a)                 __io(a)
  50 #define __mem_pci(a)            (a)
  51
  52
  53 /*****************************************************************************
  54  * Helpers to access Orion registers
  55  ****************************************************************************/
  56 #define orion5x_read(r)         __raw_readl(r)
  57 #define orion5x_write(r, val)   __raw_writel(val, r)
  58
  59 /*
  60  * These are not preempt-safe.  Locks, if needed, must be taken
  61  * care of by the caller.
  62  */
  63 #define orion5x_setbits(r, mask)        orion5x_write((r), orion5x_read(r) | (mask))
  64 #define orion5x_clrbits(r, mask)        orion5x_write((r), orion5x_read(r) & ~(mask))
  65
  66
  67 #endif