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      1 /*	$NetBSD: amdgpu_bios_parser_helper.c,v 1.2 2021/12/18 23:45:00 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012-15 Advanced Micro Devices, Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: AMD
     25  *
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: amdgpu_bios_parser_helper.c,v 1.2 2021/12/18 23:45:00 riastradh Exp $");
     30 
     31 #include "dm_services.h"
     32 
     33 #include "atom.h"
     34 
     35 #include "include/bios_parser_types.h"
     36 #include "bios_parser_helper.h"
     37 #include "command_table_helper.h"
     38 #include "command_table.h"
     39 #include "bios_parser_types_internal.h"
     40 
     41 uint8_t *bios_get_image(struct dc_bios *bp,
     42 	uint32_t offset,
     43 	uint32_t size)
     44 {
     45 	if (bp->bios && offset + size < bp->bios_size)
     46 		return bp->bios + offset;
     47 	else
     48 		return NULL;
     49 }
     50 
     51 #include "reg_helper.h"
     52 
     53 #define CTX \
     54 	bios->ctx
     55 #define REG(reg)\
     56 	(bios->regs->reg)
     57 
     58 #undef FN
     59 #define FN(reg_name, field_name) \
     60 		ATOM_ ## field_name ## _SHIFT, ATOM_ ## field_name
     61 
     62 bool bios_is_accelerated_mode(
     63 	struct dc_bios *bios)
     64 {
     65 	uint32_t acc_mode;
     66 	REG_GET(BIOS_SCRATCH_6, S6_ACC_MODE, &acc_mode);
     67 	return (acc_mode == 1);
     68 }
     69 
     70 
     71 void bios_set_scratch_acc_mode_change(
     72 	struct dc_bios *bios)
     73 {
     74 	REG_UPDATE(BIOS_SCRATCH_6, S6_ACC_MODE, 1);
     75 }
     76 
     77 
     78 void bios_set_scratch_critical_state(
     79 	struct dc_bios *bios,
     80 	bool state)
     81 {
     82 	uint32_t critial_state = state ? 1 : 0;
     83 	REG_UPDATE(BIOS_SCRATCH_6, S6_CRITICAL_STATE, critial_state);
     84 }
     85 
     86 uint32_t bios_get_vga_enabled_displays(
     87 	struct dc_bios *bios)
     88 {
     89 	uint32_t active_disp = 1;
     90 
     91 	active_disp = REG_READ(BIOS_SCRATCH_3) & 0XFFFF;
     92 	return active_disp;
     93 }
     94 
     95