arch/cris/include/arch-v32/arch/page.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_CRIS_ARCH_PAGE_H
   3 #define _ASM_CRIS_ARCH_PAGE_H
   4
   5
   6 #ifdef __KERNEL__
   7
   8 #define PAGE_OFFSET KSEG_C      /* kseg_c is mapped to physical ram. */
   9
  10 /*
  11  * Macros to convert between physical and virtual addresses. By stripping a
  12  * selected bit it's possible to convert between KSEG_x and 0x40000000 where the
  13  * DRAM really resides. DRAM is virtually at 0xc.
  14  */
  15 #define __pa(x) ((unsigned long)(x) & 0x7fffffff)
  16 #define __va(x) ((void *)((unsigned long)(x) | 0x80000000))
  17
  18 #define VM_STACK_DEFAULT_FLAGS  (VM_READ | VM_WRITE | \
  19                                  VM_MAYREAD | VM_MAYWRITE)
  20
  21 #endif /* __KERNEL__ */
  22
  23 #endif /* _ASM_CRIS_ARCH_PAGE_H */