linux/arch/xtensa/include/asm/vectors.h
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   1/*
   2 * arch/xtensa/include/asm/xchal_vaddr_remap.h
   3 *
   4 * Xtensa macros for MMU V3 Support. Deals with re-mapping the Virtual
   5 * Memory Addresses from "Virtual == Physical" to their prevvious V2 MMU
   6 * mappings (KSEG at 0xD0000000 and KIO at 0XF0000000).
   7 *
   8 * This file is subject to the terms and conditions of the GNU General Public
   9 * License.  See the file "COPYING" in the main directory of this archive
  10 * for more details.
  11 *
  12 * Copyright (C) 2008 - 2012 Tensilica Inc.
  13 *
  14 * Pete Delaney <piet@tensilica.com>
  15 * Marc Gauthier <marc@tensilica.com
  16 */
  17
  18#ifndef _XTENSA_VECTORS_H
  19#define _XTENSA_VECTORS_H
  20
  21#include <asm/core.h>
  22#include <asm/kmem_layout.h>
  23
  24#if defined(CONFIG_MMU) && XCHAL_HAVE_PTP_MMU && XCHAL_HAVE_SPANNING_WAY
  25#ifdef CONFIG_KERNEL_VIRTUAL_ADDRESS
  26#define KERNELOFFSET                    CONFIG_KERNEL_VIRTUAL_ADDRESS
  27#else
  28#define KERNELOFFSET                    (CONFIG_KERNEL_LOAD_ADDRESS + \
  29                                         XCHAL_KSEG_CACHED_VADDR - \
  30                                         XCHAL_KSEG_PADDR)
  31#endif
  32#else
  33#define KERNELOFFSET                    CONFIG_KERNEL_LOAD_ADDRESS
  34#endif
  35
  36#define RESET_VECTOR1_VADDR             (XCHAL_RESET_VECTOR1_VADDR)
  37#ifdef CONFIG_VECTORS_ADDR
  38#define VECBASE_VADDR                   (CONFIG_VECTORS_ADDR)
  39#else
  40#define VECBASE_VADDR                   _vecbase
  41#endif
  42
  43#if XCHAL_HAVE_VECBASE
  44
  45#define VECTOR_VADDR(offset)            (VECBASE_VADDR + offset)
  46
  47#define USER_VECTOR_VADDR               VECTOR_VADDR(XCHAL_USER_VECOFS)
  48#define KERNEL_VECTOR_VADDR             VECTOR_VADDR(XCHAL_KERNEL_VECOFS)
  49#define DOUBLEEXC_VECTOR_VADDR          VECTOR_VADDR(XCHAL_DOUBLEEXC_VECOFS)
  50#define WINDOW_VECTORS_VADDR            VECTOR_VADDR(XCHAL_WINDOW_OF4_VECOFS)
  51#define INTLEVEL2_VECTOR_VADDR          VECTOR_VADDR(XCHAL_INTLEVEL2_VECOFS)
  52#define INTLEVEL3_VECTOR_VADDR          VECTOR_VADDR(XCHAL_INTLEVEL3_VECOFS)
  53#define INTLEVEL4_VECTOR_VADDR          VECTOR_VADDR(XCHAL_INTLEVEL4_VECOFS)
  54#define INTLEVEL5_VECTOR_VADDR          VECTOR_VADDR(XCHAL_INTLEVEL5_VECOFS)
  55#define INTLEVEL6_VECTOR_VADDR          VECTOR_VADDR(XCHAL_INTLEVEL6_VECOFS)
  56#define INTLEVEL7_VECTOR_VADDR          VECTOR_VADDR(XCHAL_INTLEVEL7_VECOFS)
  57#define DEBUG_VECTOR_VADDR              VECTOR_VADDR(XCHAL_DEBUG_VECOFS)
  58
  59/*
  60 * These XCHAL_* #defines from varian/core.h
  61 * are not valid to use with V3 MMU. Non-XCHAL
  62 * constants are defined above and should be used.
  63 */
  64#undef  XCHAL_VECBASE_RESET_VADDR
  65#undef  XCHAL_USER_VECTOR_VADDR
  66#undef  XCHAL_KERNEL_VECTOR_VADDR
  67#undef  XCHAL_DOUBLEEXC_VECTOR_VADDR
  68#undef  XCHAL_WINDOW_VECTORS_VADDR
  69#undef  XCHAL_INTLEVEL2_VECTOR_VADDR
  70#undef  XCHAL_INTLEVEL3_VECTOR_VADDR
  71#undef  XCHAL_INTLEVEL4_VECTOR_VADDR
  72#undef  XCHAL_INTLEVEL5_VECTOR_VADDR
  73#undef  XCHAL_INTLEVEL6_VECTOR_VADDR
  74#undef  XCHAL_INTLEVEL7_VECTOR_VADDR
  75#undef  XCHAL_DEBUG_VECTOR_VADDR
  76
  77#else
  78
  79#define USER_VECTOR_VADDR               XCHAL_USER_VECTOR_VADDR
  80#define KERNEL_VECTOR_VADDR             XCHAL_KERNEL_VECTOR_VADDR
  81#define DOUBLEEXC_VECTOR_VADDR          XCHAL_DOUBLEEXC_VECTOR_VADDR
  82#define WINDOW_VECTORS_VADDR            XCHAL_WINDOW_VECTORS_VADDR
  83#define INTLEVEL2_VECTOR_VADDR          XCHAL_INTLEVEL2_VECTOR_VADDR
  84#define INTLEVEL3_VECTOR_VADDR          XCHAL_INTLEVEL3_VECTOR_VADDR
  85#define INTLEVEL4_VECTOR_VADDR          XCHAL_INTLEVEL4_VECTOR_VADDR
  86#define INTLEVEL5_VECTOR_VADDR          XCHAL_INTLEVEL5_VECTOR_VADDR
  87#define INTLEVEL6_VECTOR_VADDR          XCHAL_INTLEVEL6_VECTOR_VADDR
  88#define INTLEVEL7_VECTOR_VADDR          XCHAL_INTLEVEL6_VECTOR_VADDR
  89#define DEBUG_VECTOR_VADDR              XCHAL_DEBUG_VECTOR_VADDR
  90
  91#endif
  92
  93#endif /* _XTENSA_VECTORS_H */
  94