| /* |
| * Copyright 2021 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 "dcn32_clk_mgr_smu_msg.h" |
| |
| #include "clk_mgr_internal.h" |
| #include "reg_helper.h" |
| #include "dalsmc.h" |
| #include "smu13_driver_if.h" |
| |
| #define mmDAL_MSG_REG 0x1628A |
| #define mmDAL_ARG_REG 0x16273 |
| #define mmDAL_RESP_REG 0x16274 |
| |
| #define REG(reg_name) \ |
| mm ## reg_name |
| |
| #include "logger_types.h" |
| |
| #define smu_print(str, ...) {DC_LOG_SMU(str, ##__VA_ARGS__); } |
| |
| |
| /* |
| * 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 dcn32_smu_wait_for_response(struct clk_mgr_internal *clk_mgr, unsigned int delay_us, unsigned int max_retries) |
| { |
| uint32_t reg = 0; |
| |
| do { |
| reg = REG_READ(DAL_RESP_REG); |
| if (reg) |
| break; |
| |
| if (delay_us >= 1000) |
| msleep(delay_us/1000); |
| else if (delay_us > 0) |
| udelay(delay_us); |
| } while (max_retries--); |
| |
| return reg; |
| } |
| |
| static bool dcn32_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr, uint32_t msg_id, uint32_t param_in, uint32_t *param_out) |
| { |
| /* Wait for response register to be ready */ |
| dcn32_smu_wait_for_response(clk_mgr, 10, 200000); |
| |
| /* Clear response register */ |
| REG_WRITE(DAL_RESP_REG, 0); |
| |
| /* Set the parameter register for the SMU message */ |
| REG_WRITE(DAL_ARG_REG, param_in); |
| |
| /* Trigger the message transaction by writing the message ID */ |
| REG_WRITE(DAL_MSG_REG, msg_id); |
| |
| /* Wait for response */ |
| if (dcn32_smu_wait_for_response(clk_mgr, 10, 200000) == DALSMC_Result_OK) { |
| if (param_out) |
| *param_out = REG_READ(DAL_ARG_REG); |
| |
| return true; |
| } |
| |
| return false; |
| } |
| |
| void dcn32_smu_send_fclk_pstate_message(struct clk_mgr_internal *clk_mgr, bool enable) |
| { |
| smu_print("FCLK P-state support value is : %d\n", enable); |
| |
| dcn32_smu_send_msg_with_param(clk_mgr, |
| DALSMC_MSG_SetFclkSwitchAllow, enable ? FCLK_PSTATE_SUPPORTED : FCLK_PSTATE_NOTSUPPORTED, NULL); |
| } |
| |
| void dcn32_smu_send_cab_for_uclk_message(struct clk_mgr_internal *clk_mgr, unsigned int num_ways) |
| { |
| uint32_t param = (num_ways << 1) | (num_ways > 0); |
| |
| dcn32_smu_send_msg_with_param(clk_mgr, DALSMC_MSG_SetCabForUclkPstate, param, NULL); |
| smu_print("Numways for SubVP : %d\n", num_ways); |
| } |
| |
| void dcn32_smu_transfer_wm_table_dram_2_smu(struct clk_mgr_internal *clk_mgr) |
| { |
| smu_print("SMU Transfer WM table DRAM 2 SMU\n"); |
| |
| dcn32_smu_send_msg_with_param(clk_mgr, |
| DALSMC_MSG_TransferTableDram2Smu, TABLE_WATERMARKS, NULL); |
| } |
| |
| void dcn32_smu_set_pme_workaround(struct clk_mgr_internal *clk_mgr) |
| { |
| smu_print("SMU Set PME workaround\n"); |
| |
| dcn32_smu_send_msg_with_param(clk_mgr, |
| DALSMC_MSG_BacoAudioD3PME, 0, NULL); |
| } |
| |
| /* Returns the actual frequency that was set in MHz, 0 on failure */ |
| unsigned int dcn32_smu_set_hard_min_by_freq(struct clk_mgr_internal *clk_mgr, uint32_t clk, uint16_t freq_mhz) |
| { |
| uint32_t response = 0; |
| |
| /* bits 23:16 for clock type, lower 16 bits for frequency in MHz */ |
| uint32_t param = (clk << 16) | freq_mhz; |
| |
| smu_print("SMU Set hard min by freq: clk = %d, freq_mhz = %d MHz\n", clk, freq_mhz); |
| |
| dcn32_smu_send_msg_with_param(clk_mgr, |
| DALSMC_MSG_SetHardMinByFreq, param, &response); |
| |
| smu_print("SMU Frequency set = %d KHz\n", response); |
| |
| return response; |
| } |