kernel/arch/unicore32/include/asm/cpu-single.h

   1 /*
   2  * linux/arch/unicore32/include/asm/cpu-single.h
   3  *
   4  * Code specific to PKUnity SoC and UniCore ISA
   5  *
   6  * Copyright (C) 2001-2010 GUAN Xue-tao
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12 #ifndef __UNICORE_CPU_SINGLE_H__
  13 #define __UNICORE_CPU_SINGLE_H__
  14
  15 #include <asm/page.h>
  16 #include <asm/memory.h>
  17
  18 #ifdef __KERNEL__
  19 #ifndef __ASSEMBLY__
  20
  21 #define cpu_switch_mm(pgd, mm) cpu_do_switch_mm(virt_to_phys(pgd), mm)
  22
  23 #define cpu_get_pgd()                                   \
  24         ({                                              \
  25                 unsigned long pg;                       \
  26                 __asm__("movc   %0, p0.c2, #0"          \
  27                          : "=r" (pg) : : "cc");         \
  28                 pg &= ~0x0fff;                          \
  29                 (pgd_t *)phys_to_virt(pg);              \
  30         })
  31
  32 struct mm_struct;
  33
  34 /* declare all the functions as extern */
  35 extern void cpu_proc_fin(void);
  36 extern int cpu_do_idle(void);
  37 extern void cpu_dcache_clean_area(void *, int);
  38 extern void cpu_do_switch_mm(unsigned long pgd_phys, struct mm_struct *mm);
  39 extern void cpu_set_pte(pte_t *ptep, pte_t pte);
  40 extern void cpu_reset(unsigned long addr) __attribute__((noreturn));
  41
  42 #endif /* __ASSEMBLY__ */
  43 #endif /* __KERNEL__ */
  44
  45 #endif /* __UNICORE_CPU_SINGLE_H__ */