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ffb6c1c6c5
[why] To resume system before entering S0i3 completely will cause PSP not reload DMCU FW since there is not HW power state change. In this case, driver cannot get correct DMCU version from IRAM since driver override it and DMCU didn't reload to update it. It makes driver return false in dcn10_dmcu_init(). [how] 1.To redefine DMCU_SCRATCH to identify different DMCU state. 2.To reserve IRAM 0xF0~0xFF write by DMCU only. 3.To remove dcn10_get_dmcu_state Signed-off-by: Martin Tsai <martin.tsai@amd.com> Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* Copyright 2012-15 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: AMD
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*
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*/
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#ifndef __DC_DMCU_H__
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#define __DC_DMCU_H__
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#include "dm_services_types.h"
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/* If HW itself ever powered down it will be 0.
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* fwDmcuInit will write to 1.
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* Driver will only call MCP init if current state is 1,
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* and the MCP command will transition this to 2.
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*/
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enum dmcu_state {
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DMCU_UNLOADED = 0,
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DMCU_LOADED_UNINITIALIZED = 1,
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DMCU_RUNNING = 2,
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};
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struct dmcu_version {
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unsigned int date;
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unsigned int month;
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unsigned int year;
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unsigned int interface_version;
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};
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struct dmcu {
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struct dc_context *ctx;
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const struct dmcu_funcs *funcs;
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enum dmcu_state dmcu_state;
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struct dmcu_version dmcu_version;
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unsigned int cached_wait_loop_number;
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};
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struct dmcu_funcs {
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bool (*dmcu_init)(struct dmcu *dmcu);
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bool (*load_iram)(struct dmcu *dmcu,
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unsigned int start_offset,
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const char *src,
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unsigned int bytes);
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void (*set_psr_enable)(struct dmcu *dmcu, bool enable, bool wait);
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bool (*setup_psr)(struct dmcu *dmcu,
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struct dc_link *link,
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struct psr_context *psr_context);
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void (*get_psr_state)(struct dmcu *dmcu, uint32_t *psr_state);
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void (*set_psr_wait_loop)(struct dmcu *dmcu,
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unsigned int wait_loop_number);
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void (*get_psr_wait_loop)(struct dmcu *dmcu,
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unsigned int *psr_wait_loop_number);
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bool (*is_dmcu_initialized)(struct dmcu *dmcu);
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};
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#endif
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