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_WRITE               (1 << 11)
  10 #define FSR_FS4                 (1 << 10)
  11 #define FSR_FS3_0               (15)
  12 #define FSR_FS5_0               (0x3f)
  13
  14 #ifdef CONFIG_ARM_LPAE
  15 #define FSR_FS_AEA              17
  16
  17 static inline int fsr_fs(unsigned int fsr)
  18 {
  19         return fsr & FSR_FS5_0;
  20 }
  21 #else
  22 #define FSR_FS_AEA              22
  23
  24 static inline int fsr_fs(unsigned int fsr)
  25 {
  26         return (fsr & FSR_FS3_0) | (fsr & FSR_FS4) >> 6;
  27 }
  28 #endif
  29
  30 void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs);
  31 void early_abt_enable(void);
  32
  33 #endif  /* __ARCH_ARM_FAULT_H */