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/*
* Copyright 2018 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include "smumgr.h"
#include "vega10_inc.h"
#include "soc15_common.h"
#include "pp_debug.h"
/* MP Apertures */
#define MP0_Public 0x03800000
#define MP0_SRAM 0x03900000
#define MP1_Public 0x03b00000
#define MP1_SRAM 0x03c00004
#define smnMP1_FIRMWARE_FLAGS 0x3010028
bool smu9_is_smc_ram_running(struct pp_hwmgr *hwmgr)
{
struct amdgpu_device *adev = hwmgr->adev;
uint32_t mp1_fw_flags;
WREG32_SOC15(NBIF, 0, mmPCIE_INDEX2,
(MP1_Public | (smnMP1_FIRMWARE_FLAGS & 0xffffffff)));
mp1_fw_flags = RREG32_SOC15(NBIF, 0, mmPCIE_DATA2);
if (mp1_fw_flags & MP1_FIRMWARE_FLAGS__INTERRUPTS_ENABLED_MASK)
return true;
return false;
}
/*
* Check if SMC has responded to previous message.
*
* @param smumgr the address of the powerplay hardware manager.
* @return TRUE SMC has responded, FALSE otherwise.
*/
static uint32_t smu9_wait_for_response(struct pp_hwmgr *hwmgr)
{
struct amdgpu_device *adev = hwmgr->adev;
uint32_t reg;
uint32_t ret;
reg = SOC15_REG_OFFSET(MP1, 0, mmMP1_SMN_C2PMSG_90);
ret = phm_wait_for_register_unequal(hwmgr, reg,
0, MP1_C2PMSG_90__CONTENT_MASK);
if (ret)
pr_err("No response from smu\n");
return RREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_90);
}
/*
* Send a message to the SMC, and do not wait for its response.
* @param smumgr the address of the powerplay hardware manager.
* @param msg the message to send.
* @return Always return 0.
*/
static int smu9_send_msg_to_smc_without_waiting(struct pp_hwmgr *hwmgr,
uint16_t msg)
{
struct amdgpu_device *adev = hwmgr->adev;
WREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_66, msg);
return 0;
}
/*
* Send a message to the SMC, and wait for its response.
* @param hwmgr the address of the powerplay hardware manager.
* @param msg the message to send.
* @return Always return 0.
*/
int smu9_send_msg_to_smc(struct pp_hwmgr *hwmgr, uint16_t msg)
{
struct amdgpu_device *adev = hwmgr->adev;
uint32_t ret;
smu9_wait_for_response(hwmgr);
WREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_90, 0);
smu9_send_msg_to_smc_without_waiting(hwmgr, msg);
ret = smu9_wait_for_response(hwmgr);
if (ret != 1)
pr_err("Failed to send message: 0x%x, ret value: 0x%x\n", msg, ret);
return 0;
}
/*
* Send a message to the SMC with parameter
* @param hwmgr: the address of the powerplay hardware manager.
* @param msg: the message to send.
* @param parameter: the parameter to send
* @return Always return 0.
*/
int smu9_send_msg_to_smc_with_parameter(struct pp_hwmgr *hwmgr,
uint16_t msg, uint32_t parameter)
{
struct amdgpu_device *adev = hwmgr->adev;
uint32_t ret;
smu9_wait_for_response(hwmgr);
WREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_90, 0);
WREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_82, parameter);
smu9_send_msg_to_smc_without_waiting(hwmgr, msg);
ret = smu9_wait_for_response(hwmgr);
if (ret != 1)
pr_err("Failed message: 0x%x, input parameter: 0x%x, error code: 0x%x\n", msg, parameter, ret);
return 0;
}
uint32_t smu9_get_argument(struct pp_hwmgr *hwmgr)
{
struct amdgpu_device *adev = hwmgr->adev;
return RREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_82);
}
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