/*
* Copyright 2012-16 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.
*
* Authors: AMD
*
*/
#include "core_types.h"
#include "clk_mgr_internal.h"
#include "reg_helper.h"
#include "dm_helpers.h"
#include "rn_clk_mgr_vbios_smu.h"
#include <linux/delay.h>
#include "renoir_ip_offset.h"
#include "mp/mp_12_0_0_offset.h"
#include "mp/mp_12_0_0_sh_mask.h"
#define REG(reg_name) \
(MP0_BASE.instance[0].segment[mm ## reg_name ## _BASE_IDX] + mm ## reg_name)
#define FN(reg_name, field) \
FD(reg_name##__##field)
#include "logger_types.h"
#undef DC_LOGGER
#define DC_LOGGER \
CTX->logger
#define smu_print(str, ...) {DC_LOG_SMU(str, ##__VA_ARGS__); }
#define VBIOSSMC_MSG_TestMessage 0x1
#define VBIOSSMC_MSG_GetSmuVersion 0x2
#define VBIOSSMC_MSG_PowerUpGfx 0x3
#define VBIOSSMC_MSG_SetDispclkFreq 0x4
#define VBIOSSMC_MSG_SetDprefclkFreq 0x5
#define VBIOSSMC_MSG_PowerDownGfx 0x6
#define VBIOSSMC_MSG_SetDppclkFreq 0x7
#define VBIOSSMC_MSG_SetHardMinDcfclkByFreq 0x8
#define VBIOSSMC_MSG_SetMinDeepSleepDcfclk 0x9
#define VBIOSSMC_MSG_SetPhyclkVoltageByFreq 0xA
#define VBIOSSMC_MSG_GetFclkFrequency 0xB
#define VBIOSSMC_MSG_SetDisplayCount 0xC
#define VBIOSSMC_MSG_EnableTmdp48MHzRefclkPwrDown 0xD
#define VBIOSSMC_MSG_UpdatePmeRestore 0xE
#define VBIOSSMC_MSG_IsPeriodicRetrainingDisabled 0xF
#define VBIOSSMC_Status_BUSY 0x0
#define VBIOSSMC_Result_OK 0x1
#define VBIOSSMC_Result_Failed 0xFF
#define VBIOSSMC_Result_UnknownCmd 0xFE
#define VBIOSSMC_Result_CmdRejectedPrereq 0xFD
#define VBIOSSMC_Result_CmdRejectedBusy 0xFC
/*
* Function to be used instead of REG_WAIT macro because the wait ends when
* the register is NOT EQUAL to zero, and because the translation in msg_if.h
* won't work with REG_WAIT.
*/
static uint32_t rn_smu_wait_for_response(struct clk_mgr_internal *clk_mgr, unsigned int delay_us, unsigned int max_retries)
{
uint32_t res_val = VBIOSSMC_Status_BUSY;
do {
res_val = REG_READ(MP1_SMN_C2PMSG_91);
if (res_val != VBIOSSMC_Status_BUSY)
break;
if (delay_us >= 1000)
msleep(delay_us/1000);
else if (delay_us > 0)
udelay(delay_us);
} while (max_retries--);
return res_val;
}
static int rn_vbios_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr,
unsigned int msg_id,
unsigned int param)
{
uint32_t result;
result = rn_smu_wait_for_response(clk_mgr, 10, 200000);
if (result != VBIOSSMC_Result_OK)
smu_print("SMU Response was not OK. SMU response after wait received is: %d\n", result);
if (result == VBIOSSMC_Status_BUSY) {
return -1;
}
/* First clear response register */
REG_WRITE(MP1_SMN_C2PMSG_91, VBIOSSMC_Status_BUSY);
/* Set the parameter register for the SMU message, unit is Mhz */
REG_WRITE(MP1_SMN_C2PMSG_83, param);
/* Trigger the message transaction by writing the message ID */
REG_WRITE(MP1_SMN_C2PMSG_67, msg_id);
result = rn_smu_wait_for_response(clk_mgr, 10, 200000);
if (IS_SMU_TIMEOUT(result)) {
ASSERT(0);
dm_helpers_smu_timeout(CTX, msg_id, param, 10 * 200000);
}
/* Actual dispclk set is returned in the parameter register */
return REG_READ(MP1_SMN_C2PMSG_83);
}
int rn_vbios_smu_get_smu_version(struct clk_mgr_internal *clk_mgr)
{
return rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_GetSmuVersion,
0);
}
int rn_vbios_smu_set_dispclk(struct clk_mgr_internal *clk_mgr, int requested_dispclk_khz)
{
int actual_dispclk_set_mhz = -1;
struct dc *dc = clk_mgr->base.ctx->dc;
struct dmcu *dmcu = dc->res_pool->dmcu;
/* Unit of SMU msg parameter is Mhz */
actual_dispclk_set_mhz = rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetDispclkFreq,
khz_to_mhz_ceil(requested_dispclk_khz));
if (dmcu && dmcu->funcs->is_dmcu_initialized(dmcu)) {
if (clk_mgr->dfs_bypass_disp_clk != actual_dispclk_set_mhz)
dmcu->funcs->set_psr_wait_loop(dmcu,
actual_dispclk_set_mhz / 7);
}
// pmfw always set clock more than or equal requested clock
ASSERT(actual_dispclk_set_mhz >= khz_to_mhz_ceil(requested_dispclk_khz));
return actual_dispclk_set_mhz * 1000;
}
int rn_vbios_smu_set_dprefclk(struct clk_mgr_internal *clk_mgr)
{
int actual_dprefclk_set_mhz = -1;
actual_dprefclk_set_mhz = rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetDprefclkFreq,
khz_to_mhz_ceil(clk_mgr->base.dprefclk_khz));
/* TODO: add code for programing DP DTO, currently this is down by command table */
return actual_dprefclk_set_mhz * 1000;
}
int rn_vbios_smu_set_hard_min_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_dcfclk_khz)
{
int actual_dcfclk_set_mhz = -1;
if (clk_mgr->smu_ver < 0x370c00)
return actual_dcfclk_set_mhz;
actual_dcfclk_set_mhz = rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetHardMinDcfclkByFreq,
khz_to_mhz_ceil(requested_dcfclk_khz));
return actual_dcfclk_set_mhz * 1000;
}
int rn_vbios_smu_set_min_deep_sleep_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_min_ds_dcfclk_khz)
{
int actual_min_ds_dcfclk_mhz = -1;
if (clk_mgr->smu_ver < 0x370c00)
return actual_min_ds_dcfclk_mhz;
actual_min_ds_dcfclk_mhz = rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetMinDeepSleepDcfclk,
khz_to_mhz_ceil(requested_min_ds_dcfclk_khz));
return actual_min_ds_dcfclk_mhz * 1000;
}
void rn_vbios_smu_set_phyclk(struct clk_mgr_internal *clk_mgr, int requested_phyclk_khz)
{
rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetPhyclkVoltageByFreq,
khz_to_mhz_ceil(requested_phyclk_khz));
}
int rn_vbios_smu_set_dppclk(struct clk_mgr_internal *clk_mgr, int requested_dpp_khz)
{
int actual_dppclk_set_mhz = -1;
actual_dppclk_set_mhz = rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetDppclkFreq,
khz_to_mhz_ceil(requested_dpp_khz));
ASSERT(actual_dppclk_set_mhz >= khz_to_mhz_ceil(requested_dpp_khz));
return actual_dppclk_set_mhz * 1000;
}
void rn_vbios_smu_set_dcn_low_power_state(struct clk_mgr_internal *clk_mgr, enum dcn_pwr_state state)
{
int disp_count;
if (state == DCN_PWR_STATE_LOW_POWER)
disp_count = 0;
else
disp_count = 1;
rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_SetDisplayCount,
disp_count);
}
void rn_vbios_smu_enable_48mhz_tmdp_refclk_pwrdwn(struct clk_mgr_internal *clk_mgr, bool enable)
{
rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_EnableTmdp48MHzRefclkPwrDown,
enable);
}
void rn_vbios_smu_enable_pme_wa(struct clk_mgr_internal *clk_mgr)
{
rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_UpdatePmeRestore,
0);
}
int rn_vbios_smu_is_periodic_retraining_disabled(struct clk_mgr_internal *clk_mgr)
{
return rn_vbios_smu_send_msg_with_param(
clk_mgr,
VBIOSSMC_MSG_IsPeriodicRetrainingDisabled,
1); // if PMFW doesn't support this message, assume retraining is disabled
// so we only use most optimal watermark if we know retraining is enabled.
}
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