drm/radeon/atom-bits.h

0001 /*
0002  * Copyright 2008 Advanced Micro Devices, Inc.
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Author: Stanislaw Skowronek
0023  */
0024
0025 #ifndef ATOM_BITS_H
0026 #define ATOM_BITS_H
0027
0028 static inline uint8_t get_u8(void *bios, int ptr)
0029 {
0030     return ((unsigned char *)bios)[ptr];
0031 }
0032 #define U8(ptr) get_u8(ctx->ctx->bios, (ptr))
0033 #define CU8(ptr) get_u8(ctx->bios, (ptr))
0034 static inline uint16_t get_u16(void *bios, int ptr)
0035 {
0036     return get_u8(bios ,ptr)|(((uint16_t)get_u8(bios, ptr+1))<<8);
0037 }
0038 #define U16(ptr) get_u16(ctx->ctx->bios, (ptr))
0039 #define CU16(ptr) get_u16(ctx->bios, (ptr))
0040 static inline uint32_t get_u32(void *bios, int ptr)
0041 {
0042     return get_u16(bios, ptr)|(((uint32_t)get_u16(bios, ptr+2))<<16);
0043 }
0044 #define U32(ptr) get_u32(ctx->ctx->bios, (ptr))
0045 #define CU32(ptr) get_u32(ctx->bios, (ptr))
0046 #define CSTR(ptr) (((char *)(ctx->bios))+(ptr))
0047
0048 #endif