xref: /OK3568_Linux_fs/kernel/drivers/gpu/drm/amd/include/atom-bits.h (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun  * Copyright 2008 Advanced Micro Devices, Inc.
3*4882a593Smuzhiyun  *
4*4882a593Smuzhiyun  * Permission is hereby granted, free of charge, to any person obtaining a
5*4882a593Smuzhiyun  * copy of this software and associated documentation files (the "Software"),
6*4882a593Smuzhiyun  * to deal in the Software without restriction, including without limitation
7*4882a593Smuzhiyun  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8*4882a593Smuzhiyun  * and/or sell copies of the Software, and to permit persons to whom the
9*4882a593Smuzhiyun  * Software is furnished to do so, subject to the following conditions:
10*4882a593Smuzhiyun  *
11*4882a593Smuzhiyun  * The above copyright notice and this permission notice shall be included in
12*4882a593Smuzhiyun  * all copies or substantial portions of the Software.
13*4882a593Smuzhiyun  *
14*4882a593Smuzhiyun  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15*4882a593Smuzhiyun  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16*4882a593Smuzhiyun  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17*4882a593Smuzhiyun  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18*4882a593Smuzhiyun  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19*4882a593Smuzhiyun  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20*4882a593Smuzhiyun  * OTHER DEALINGS IN THE SOFTWARE.
21*4882a593Smuzhiyun  *
22*4882a593Smuzhiyun  * Author: Stanislaw Skowronek
23*4882a593Smuzhiyun  */
24*4882a593Smuzhiyun 
25*4882a593Smuzhiyun #ifndef ATOM_BITS_H
26*4882a593Smuzhiyun #define ATOM_BITS_H
27*4882a593Smuzhiyun 
get_u8(void * bios,int ptr)28*4882a593Smuzhiyun static inline uint8_t get_u8(void *bios, int ptr)
29*4882a593Smuzhiyun {
30*4882a593Smuzhiyun     return ((unsigned char *)bios)[ptr];
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun #define U8(ptr) get_u8(ctx->ctx->bios, (ptr))
33*4882a593Smuzhiyun #define CU8(ptr) get_u8(ctx->bios, (ptr))
get_u16(void * bios,int ptr)34*4882a593Smuzhiyun static inline uint16_t get_u16(void *bios, int ptr)
35*4882a593Smuzhiyun {
36*4882a593Smuzhiyun     return get_u8(bios ,ptr)|(((uint16_t)get_u8(bios, ptr+1))<<8);
37*4882a593Smuzhiyun }
38*4882a593Smuzhiyun #define U16(ptr) get_u16(ctx->ctx->bios, (ptr))
39*4882a593Smuzhiyun #define CU16(ptr) get_u16(ctx->bios, (ptr))
get_u32(void * bios,int ptr)40*4882a593Smuzhiyun static inline uint32_t get_u32(void *bios, int ptr)
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun     return get_u16(bios, ptr)|(((uint32_t)get_u16(bios, ptr+2))<<16);
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun #define U32(ptr) get_u32(ctx->ctx->bios, (ptr))
45*4882a593Smuzhiyun #define CU32(ptr) get_u32(ctx->bios, (ptr))
46*4882a593Smuzhiyun #define CSTR(ptr) (((char *)(ctx->bios))+(ptr))
47*4882a593Smuzhiyun 
48*4882a593Smuzhiyun #endif
49