1 /*
2  * Copyright 2012-15 Advanced Micro Devices, Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: AMD
23  *
24  */
25 
26 #include "dm_services.h"
27 
28 #include "atom.h"
29 
30 #include "include/bios_parser_types.h"
31 #include "bios_parser_helper.h"
32 #include "command_table_helper.h"
33 #include "command_table.h"
34 #include "bios_parser_types_internal.h"
35 
36 uint8_t *bios_get_image(struct dc_bios *bp,
37 	uint32_t offset,
38 	uint32_t size)
39 {
40 	if (bp->bios && offset + size < bp->bios_size)
41 		return bp->bios + offset;
42 	else
43 		return NULL;
44 }
45 
46 #include "reg_helper.h"
47 
48 #define CTX \
49 	bios->ctx
50 #define REG(reg)\
51 	(bios->regs->reg)
52 
53 #undef FN
54 #define FN(reg_name, field_name) \
55 		ATOM_ ## field_name ## _SHIFT, ATOM_ ## field_name
56 
57 bool bios_is_accelerated_mode(
58 	struct dc_bios *bios)
59 {
60 	uint32_t acc_mode;
61 	REG_GET(BIOS_SCRATCH_6, S6_ACC_MODE, &acc_mode);
62 	return (acc_mode == 1);
63 }
64 
65 
66 void bios_set_scratch_acc_mode_change(
67 	struct dc_bios *bios)
68 {
69 	REG_UPDATE(BIOS_SCRATCH_6, S6_ACC_MODE, 1);
70 }
71 
72 
73 void bios_set_scratch_critical_state(
74 	struct dc_bios *bios,
75 	bool state)
76 {
77 	uint32_t critial_state = state ? 1 : 0;
78 	REG_UPDATE(BIOS_SCRATCH_6, S6_CRITICAL_STATE, critial_state);
79 }
80 
81 uint32_t bios_get_vga_enabled_displays(
82 	struct dc_bios *bios)
83 {
84 	uint32_t active_disp = 1;
85 
86 	if (bios->regs->BIOS_SCRATCH_3) /*follow up with other asic, todo*/
87 		active_disp = REG_READ(BIOS_SCRATCH_3) & 0XFFFF;
88 	return active_disp;
89 }
90 
91