1 /* 2 * Copyright 2020 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: AMD 23 * 24 */ 25 26 #include "core_types.h" 27 #include "clk_mgr_internal.h" 28 #include "reg_helper.h" 29 #include <linux/delay.h> 30 31 #include "dcn301_smu.h" 32 33 #include "vangogh_ip_offset.h" 34 35 #include "mp/mp_11_5_0_offset.h" 36 #include "mp/mp_11_5_0_sh_mask.h" 37 38 #define REG(reg_name) \ 39 (MP0_BASE.instance[0].segment[mm ## reg_name ## _BASE_IDX] + mm ## reg_name) 40 41 #define FN(reg_name, field) \ 42 FD(reg_name##__##field) 43 44 #include "logger_types.h" 45 #undef DC_LOGGER 46 #define DC_LOGGER \ 47 CTX->logger 48 #define smu_print(str, ...) {DC_LOG_SMU(str, ##__VA_ARGS__); } 49 50 #define VBIOSSMC_MSG_GetSmuVersion 0x2 51 #define VBIOSSMC_MSG_SetDispclkFreq 0x4 52 #define VBIOSSMC_MSG_SetDprefclkFreq 0x5 53 #define VBIOSSMC_MSG_SetDppclkFreq 0x6 54 #define VBIOSSMC_MSG_SetHardMinDcfclkByFreq 0x7 55 #define VBIOSSMC_MSG_SetMinDeepSleepDcfclk 0x8 56 //#define VBIOSSMC_MSG_SetPhyclkVoltageByFreq 0xA 57 #define VBIOSSMC_MSG_GetFclkFrequency 0xA 58 //#define VBIOSSMC_MSG_SetDisplayCount 0xC 59 //#define VBIOSSMC_MSG_EnableTmdp48MHzRefclkPwrDown 0xD 60 #define VBIOSSMC_MSG_UpdatePmeRestore 0xD 61 #define VBIOSSMC_MSG_SetVbiosDramAddrHigh 0xE //Used for WM table txfr 62 #define VBIOSSMC_MSG_SetVbiosDramAddrLow 0xF 63 #define VBIOSSMC_MSG_TransferTableSmu2Dram 0x10 64 #define VBIOSSMC_MSG_TransferTableDram2Smu 0x11 65 #define VBIOSSMC_MSG_SetDisplayIdleOptimizations 0x12 66 67 #define VBIOSSMC_Status_BUSY 0x0 68 #define VBIOSSMC_Result_OK 0x1 69 #define VBIOSSMC_Result_Failed 0xFF 70 #define VBIOSSMC_Result_UnknownCmd 0xFE 71 #define VBIOSSMC_Result_CmdRejectedPrereq 0xFD 72 #define VBIOSSMC_Result_CmdRejectedBusy 0xFC 73 74 /* 75 * Function to be used instead of REG_WAIT macro because the wait ends when 76 * the register is NOT EQUAL to zero, and because the translation in msg_if.h 77 * won't work with REG_WAIT. 78 */ 79 static uint32_t dcn301_smu_wait_for_response(struct clk_mgr_internal *clk_mgr, unsigned int delay_us, unsigned int max_retries) 80 { 81 uint32_t res_val = VBIOSSMC_Status_BUSY; 82 83 do { 84 res_val = REG_READ(MP1_SMN_C2PMSG_91); 85 if (res_val != VBIOSSMC_Status_BUSY) 86 break; 87 88 if (delay_us >= 1000) 89 msleep(delay_us/1000); 90 else if (delay_us > 0) 91 udelay(delay_us); 92 } while (max_retries--); 93 94 return res_val; 95 } 96 97 static int dcn301_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr, 98 unsigned int msg_id, 99 unsigned int param) 100 { 101 uint32_t result; 102 103 result = dcn301_smu_wait_for_response(clk_mgr, 10, 200000); 104 105 if (result != VBIOSSMC_Result_OK) 106 smu_print("SMU Response was not OK. SMU response after wait received is: %d\n", result); 107 108 if (result == VBIOSSMC_Status_BUSY) { 109 return -1; 110 } 111 112 /* First clear response register */ 113 REG_WRITE(MP1_SMN_C2PMSG_91, VBIOSSMC_Status_BUSY); 114 115 /* Set the parameter register for the SMU message, unit is Mhz */ 116 REG_WRITE(MP1_SMN_C2PMSG_83, param); 117 118 /* Trigger the message transaction by writing the message ID */ 119 REG_WRITE(MP1_SMN_C2PMSG_67, msg_id); 120 121 result = dcn301_smu_wait_for_response(clk_mgr, 10, 200000); 122 123 ASSERT(result == VBIOSSMC_Result_OK); 124 125 /* Actual dispclk set is returned in the parameter register */ 126 return REG_READ(MP1_SMN_C2PMSG_83); 127 } 128 129 int dcn301_smu_get_smu_version(struct clk_mgr_internal *clk_mgr) 130 { 131 int smu_version = dcn301_smu_send_msg_with_param(clk_mgr, 132 VBIOSSMC_MSG_GetSmuVersion, 133 0); 134 135 DC_LOG_DEBUG("%s %x\n", __func__, smu_version); 136 137 return smu_version; 138 } 139 140 141 int dcn301_smu_set_dispclk(struct clk_mgr_internal *clk_mgr, int requested_dispclk_khz) 142 { 143 int actual_dispclk_set_mhz = -1; 144 145 DC_LOG_DEBUG("%s(%d)\n", __func__, requested_dispclk_khz); 146 147 /* Unit of SMU msg parameter is Mhz */ 148 actual_dispclk_set_mhz = dcn301_smu_send_msg_with_param( 149 clk_mgr, 150 VBIOSSMC_MSG_SetDispclkFreq, 151 khz_to_mhz_ceil(requested_dispclk_khz)); 152 153 return actual_dispclk_set_mhz * 1000; 154 } 155 156 int dcn301_smu_set_dprefclk(struct clk_mgr_internal *clk_mgr) 157 { 158 int actual_dprefclk_set_mhz = -1; 159 160 DC_LOG_DEBUG("%s %d\n", __func__, clk_mgr->base.dprefclk_khz / 1000); 161 162 actual_dprefclk_set_mhz = dcn301_smu_send_msg_with_param( 163 clk_mgr, 164 VBIOSSMC_MSG_SetDprefclkFreq, 165 khz_to_mhz_ceil(clk_mgr->base.dprefclk_khz)); 166 167 /* TODO: add code for programing DP DTO, currently this is down by command table */ 168 169 return actual_dprefclk_set_mhz * 1000; 170 } 171 172 int dcn301_smu_set_hard_min_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_dcfclk_khz) 173 { 174 int actual_dcfclk_set_mhz = -1; 175 176 DC_LOG_DEBUG("%s(%d)\n", __func__, requested_dcfclk_khz); 177 178 actual_dcfclk_set_mhz = dcn301_smu_send_msg_with_param( 179 clk_mgr, 180 VBIOSSMC_MSG_SetHardMinDcfclkByFreq, 181 khz_to_mhz_ceil(requested_dcfclk_khz)); 182 183 #ifdef DBG 184 smu_print("actual_dcfclk_set_mhz %d is set to : %d\n", actual_dcfclk_set_mhz, actual_dcfclk_set_mhz * 1000); 185 #endif 186 187 return actual_dcfclk_set_mhz * 1000; 188 } 189 190 int dcn301_smu_set_min_deep_sleep_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_min_ds_dcfclk_khz) 191 { 192 int actual_min_ds_dcfclk_mhz = -1; 193 194 DC_LOG_DEBUG("%s(%d)\n", __func__, requested_min_ds_dcfclk_khz); 195 196 actual_min_ds_dcfclk_mhz = dcn301_smu_send_msg_with_param( 197 clk_mgr, 198 VBIOSSMC_MSG_SetMinDeepSleepDcfclk, 199 khz_to_mhz_ceil(requested_min_ds_dcfclk_khz)); 200 201 return actual_min_ds_dcfclk_mhz * 1000; 202 } 203 204 int dcn301_smu_set_dppclk(struct clk_mgr_internal *clk_mgr, int requested_dpp_khz) 205 { 206 int actual_dppclk_set_mhz = -1; 207 208 DC_LOG_DEBUG("%s(%d)\n", __func__, requested_dpp_khz); 209 210 actual_dppclk_set_mhz = dcn301_smu_send_msg_with_param( 211 clk_mgr, 212 VBIOSSMC_MSG_SetDppclkFreq, 213 khz_to_mhz_ceil(requested_dpp_khz)); 214 215 return actual_dppclk_set_mhz * 1000; 216 } 217 218 void dcn301_smu_set_display_idle_optimization(struct clk_mgr_internal *clk_mgr, uint32_t idle_info) 219 { 220 //TODO: Work with smu team to define optimization options. 221 222 DC_LOG_DEBUG("%s(%x)\n", __func__, idle_info); 223 224 dcn301_smu_send_msg_with_param( 225 clk_mgr, 226 VBIOSSMC_MSG_SetDisplayIdleOptimizations, 227 idle_info); 228 } 229 230 void dcn301_smu_enable_phy_refclk_pwrdwn(struct clk_mgr_internal *clk_mgr, bool enable) 231 { 232 union display_idle_optimization_u idle_info = { 0 }; 233 234 if (enable) { 235 idle_info.idle_info.df_request_disabled = 1; 236 idle_info.idle_info.phy_ref_clk_off = 1; 237 } 238 239 DC_LOG_DEBUG("%s(%d)\n", __func__, enable); 240 241 dcn301_smu_send_msg_with_param( 242 clk_mgr, 243 VBIOSSMC_MSG_SetDisplayIdleOptimizations, 244 idle_info.data); 245 } 246 247 void dcn301_smu_enable_pme_wa(struct clk_mgr_internal *clk_mgr) 248 { 249 dcn301_smu_send_msg_with_param( 250 clk_mgr, 251 VBIOSSMC_MSG_UpdatePmeRestore, 252 0); 253 } 254 255 void dcn301_smu_set_dram_addr_high(struct clk_mgr_internal *clk_mgr, uint32_t addr_high) 256 { 257 DC_LOG_DEBUG("%s(%x)\n", __func__, addr_high); 258 259 dcn301_smu_send_msg_with_param(clk_mgr, 260 VBIOSSMC_MSG_SetVbiosDramAddrHigh, addr_high); 261 } 262 263 void dcn301_smu_set_dram_addr_low(struct clk_mgr_internal *clk_mgr, uint32_t addr_low) 264 { 265 DC_LOG_DEBUG("%s(%x)\n", __func__, addr_low); 266 267 dcn301_smu_send_msg_with_param(clk_mgr, 268 VBIOSSMC_MSG_SetVbiosDramAddrLow, addr_low); 269 } 270 271 void dcn301_smu_transfer_dpm_table_smu_2_dram(struct clk_mgr_internal *clk_mgr) 272 { 273 dcn301_smu_send_msg_with_param(clk_mgr, 274 VBIOSSMC_MSG_TransferTableSmu2Dram, TABLE_DPMCLOCKS); 275 } 276 277 void dcn301_smu_transfer_wm_table_dram_2_smu(struct clk_mgr_internal *clk_mgr) 278 { 279 dcn301_smu_send_msg_with_param(clk_mgr, 280 VBIOSSMC_MSG_TransferTableDram2Smu, TABLE_WATERMARKS); 281 } 282