arch/arc/include/asm/arcregs.h

   1 /*
   2  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. All rights reserved.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #ifndef _ASM_ARC_ARCREGS_H
   8 #define _ASM_ARC_ARCREGS_H
   9
  10 #include <asm/cache.h>
  11
  12 /*
  13  * ARC architecture has additional address space - auxiliary registers.
  14  * These registers are mostly used for configuration purposes.
  15  * These registers are not memory mapped and special commands are used for
  16  * access: "lr"/"sr".
  17  */
  18
  19 #define ARC_AUX_IDENTITY        0x04
  20 #define ARC_AUX_STATUS32        0x0a
  21
  22 /* Instruction cache related auxiliary registers */
  23 #define ARC_AUX_IC_IVIC         0x10
  24 #define ARC_AUX_IC_CTRL         0x11
  25 #define ARC_AUX_IC_IVIL         0x19
  26 #if (CONFIG_ARC_MMU_VER == 3)
  27 #define ARC_AUX_IC_PTAG         0x1E
  28 #endif
  29 #define ARC_BCR_IC_BUILD        0x77
  30
  31 /* Timer related auxiliary registers */
  32 #define ARC_AUX_TIMER0_CNT      0x21    /* Timer 0 count */
  33 #define ARC_AUX_TIMER0_CTRL     0x22    /* Timer 0 control */
  34 #define ARC_AUX_TIMER0_LIMIT    0x23    /* Timer 0 limit */
  35
  36 #define ARC_AUX_INTR_VEC_BASE   0x25
  37
  38 /* Data cache related auxiliary registers */
  39 #define ARC_AUX_DC_IVDC         0x47
  40 #define ARC_AUX_DC_CTRL         0x48
  41
  42 #define ARC_AUX_DC_IVDL         0x4A
  43 #define ARC_AUX_DC_FLSH         0x4B
  44 #define ARC_AUX_DC_FLDL         0x4C
  45 #if (CONFIG_ARC_MMU_VER == 3)
  46 #define ARC_AUX_DC_PTAG         0x5C
  47 #endif
  48 #define ARC_BCR_DC_BUILD        0x72
  49
  50 #ifndef __ASSEMBLY__
  51 /* Accessors for auxiliary registers */
  52 #define read_aux_reg(reg)       __builtin_arc_lr(reg)
  53
  54 /* gcc builtin sr needs reg param to be long immediate */
  55 #define write_aux_reg(reg_immed, val)           \
  56                 __builtin_arc_sr((unsigned int)val, reg_immed)
  57 #endif /* __ASSEMBLY__ */
  58
  59 #endif /* _ASM_ARC_ARCREGS_H */