arch/arm/mm/fault.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __ARCH_ARM_FAULT_H
   3 #define __ARCH_ARM_FAULT_H
   4
   5 /*
   6  * Fault status register encodings.  We steal bit 31 for our own purposes.
   7  */
   8 #define FSR_LNX_PF              (1 << 31)
   9 #define FSR_CM                  (1 << 13)
  10 #define FSR_WRITE               (1 << 11)
  11 #define FSR_FS4                 (1 << 10)
  12 #define FSR_FS3_0               (15)
  13 #define FSR_FS5_0               (0x3f)
  14
  15 #ifdef CONFIG_ARM_LPAE
  16 #define FSR_FS_AEA              17
  17
  18 static inline int fsr_fs(unsigned int fsr)
  19 {
  20         return fsr & FSR_FS5_0;
  21 }
  22 #else
  23 #define FSR_FS_AEA              22
  24
  25 static inline int fsr_fs(unsigned int fsr)
  26 {
  27         return (fsr & FSR_FS3_0) | (fsr & FSR_FS4) >> 6;
  28 }
  29 #endif
  30
  31 void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs);
  32 void early_abt_enable(void);
  33
  34 #endif  /* __ARCH_ARM_FAULT_H */