arch/nios2/include/asm/registers.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2011 Tobias Klauser <tklauser@distanz.ch>
   4  */
   5
   6 #ifndef _ASM_NIOS2_REGISTERS_H
   7 #define _ASM_NIOS2_REGISTERS_H
   8
   9 #ifndef __ASSEMBLY__
  10 #include <asm/cpuinfo.h>
  11 #endif
  12
  13 /* control register numbers */
  14 #define CTL_STATUS      0
  15 #define CTL_ESTATUS     1
  16 #define CTL_BSTATUS     2
  17 #define CTL_IENABLE     3
  18 #define CTL_IPENDING    4
  19 #define CTL_CPUID       5
  20 #define CTL_RSV1        6
  21 #define CTL_EXCEPTION   7
  22 #define CTL_PTEADDR     8
  23 #define CTL_TLBACC      9
  24 #define CTL_TLBMISC     10
  25 #define CTL_RSV2        11
  26 #define CTL_BADADDR     12
  27 #define CTL_CONFIG      13
  28 #define CTL_MPUBASE     14
  29 #define CTL_MPUACC      15
  30
  31 /* access control registers using GCC builtins */
  32 #define RDCTL(r)        __builtin_rdctl(r)
  33 #define WRCTL(r, v)     __builtin_wrctl(r, v)
  34
  35 /* status register bits */
  36 #define STATUS_PIE      (1 << 0)        /* processor interrupt enable */
  37 #define STATUS_U        (1 << 1)        /* user mode */
  38 #define STATUS_EH       (1 << 2)        /* Exception mode */
  39
  40 /* estatus register bits */
  41 #define ESTATUS_EPIE    (1 << 0)        /* processor interrupt enable */
  42 #define ESTATUS_EU      (1 << 1)        /* user mode */
  43 #define ESTATUS_EH      (1 << 2)        /* Exception mode */
  44
  45 /* tlbmisc register bits */
  46 #define TLBMISC_PID_SHIFT       4
  47 #ifndef __ASSEMBLY__
  48 #define TLBMISC_PID_MASK        ((1UL << cpuinfo.tlb_pid_num_bits) - 1)
  49 #endif
  50 #define TLBMISC_WAY_MASK        0xf
  51 #define TLBMISC_WAY_SHIFT       20
  52
  53 #define TLBMISC_PID     (TLBMISC_PID_MASK << TLBMISC_PID_SHIFT) /* TLB PID */
  54 #define TLBMISC_WE      (1 << 18)       /* TLB write enable */
  55 #define TLBMISC_RD      (1 << 19)       /* TLB read */
  56 #define TLBMISC_WAY     (TLBMISC_WAY_MASK << TLBMISC_WAY_SHIFT) /* TLB way */
  57
  58 #endif /* _ASM_NIOS2_REGISTERS_H */