8892780834
[Why] We can hang in place trying to send commands when the DMCUB isn't powered on. [How] For functions that execute within a DC context or DC lock we can wrap the direct calls to dm_execute_dmub_cmd/list with code that exits idle power optimizations and reallows once we're done with the command submission on success. For DM direct submissions the DM will need to manage the enter/exit sequencing manually. We cannot invoke a DMCUB command directly within the DM execution helper or we can deadlock. Cc: Mario Limonciello <mario.limonciello@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org Reviewed-by: Hansen Dsouza <hansen.dsouza@amd.com> Acked-by: Wayne Lin <wayne.lin@amd.com> Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/*
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* Copyright 2020 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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#include "dc.h"
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#include "dc_dmub_srv.h"
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#include "dmub_outbox.h"
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#include "dmub/inc/dmub_cmd.h"
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/*
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* Function: dmub_enable_outbox_notification
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*
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* @brief
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* Sends inbox cmd to dmub for enabling outbox notifications to x86.
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*
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* @param
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* [in] dmub_srv: dmub_srv structure
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*/
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void dmub_enable_outbox_notification(struct dc_dmub_srv *dmub_srv)
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{
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union dmub_rb_cmd cmd;
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memset(&cmd, 0x0, sizeof(cmd));
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cmd.outbox1_enable.header.type = DMUB_CMD__OUTBOX1_ENABLE;
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cmd.outbox1_enable.header.sub_type = 0;
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cmd.outbox1_enable.header.payload_bytes =
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sizeof(cmd.outbox1_enable) -
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sizeof(cmd.outbox1_enable.header);
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cmd.outbox1_enable.enable = true;
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dc_wake_and_execute_dmub_cmd(dmub_srv->ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT);
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}
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