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kernel/linux-rt-4.4.41/drivers/gpu/drm/radeon/atom-bits.h 1.84 KB
5113f6f70   김현기   kernel add
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  /*
   * Copyright 2008 Advanced Micro Devices, Inc.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
   * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
   * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
   * OTHER DEALINGS IN THE SOFTWARE.
   *
   * Author: Stanislaw Skowronek
   */
  
  #ifndef ATOM_BITS_H
  #define ATOM_BITS_H
  
  static inline uint8_t get_u8(void *bios, int ptr)
  {
      return ((unsigned char *)bios)[ptr];
  }
  #define U8(ptr) get_u8(ctx->ctx->bios, (ptr))
  #define CU8(ptr) get_u8(ctx->bios, (ptr))
  static inline uint16_t get_u16(void *bios, int ptr)
  {
      return get_u8(bios ,ptr)|(((uint16_t)get_u8(bios, ptr+1))<<8);
  }
  #define U16(ptr) get_u16(ctx->ctx->bios, (ptr))
  #define CU16(ptr) get_u16(ctx->bios, (ptr))
  static inline uint32_t get_u32(void *bios, int ptr)
  {
      return get_u16(bios, ptr)|(((uint32_t)get_u16(bios, ptr+2))<<16);
  }
  #define U32(ptr) get_u32(ctx->ctx->bios, (ptr))
  #define CU32(ptr) get_u32(ctx->bios, (ptr))
  #define CSTR(ptr) (((char *)(ctx->bios))+(ptr))
  
  #endif