1 /*
2 * Copyright 2012-16 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 "dm_helpers.h"
30
31 #include "rn_clk_mgr_vbios_smu.h"
32
33 #include <linux/delay.h>
34
35 #include "renoir_ip_offset.h"
36
37 #include "mp/mp_12_0_0_offset.h"
38 #include "mp/mp_12_0_0_sh_mask.h"
39
40 #define REG(reg_name) \
41 (MP0_BASE.instance[0].segment[mm ## reg_name ## _BASE_IDX] + mm ## reg_name)
42
43 #define FN(reg_name, field) \
44 FD(reg_name##__##field)
45
46 #include "logger_types.h"
47 #undef DC_LOGGER
48 #define DC_LOGGER \
49 CTX->logger
50 #define smu_print(str, ...) {DC_LOG_SMU(str, ##__VA_ARGS__); }
51
52 #define VBIOSSMC_MSG_TestMessage 0x1
53 #define VBIOSSMC_MSG_GetSmuVersion 0x2
54 #define VBIOSSMC_MSG_PowerUpGfx 0x3
55 #define VBIOSSMC_MSG_SetDispclkFreq 0x4
56 #define VBIOSSMC_MSG_SetDprefclkFreq 0x5
57 #define VBIOSSMC_MSG_PowerDownGfx 0x6
58 #define VBIOSSMC_MSG_SetDppclkFreq 0x7
59 #define VBIOSSMC_MSG_SetHardMinDcfclkByFreq 0x8
60 #define VBIOSSMC_MSG_SetMinDeepSleepDcfclk 0x9
61 #define VBIOSSMC_MSG_SetPhyclkVoltageByFreq 0xA
62 #define VBIOSSMC_MSG_GetFclkFrequency 0xB
63 #define VBIOSSMC_MSG_SetDisplayCount 0xC
64 #define VBIOSSMC_MSG_EnableTmdp48MHzRefclkPwrDown 0xD
65 #define VBIOSSMC_MSG_UpdatePmeRestore 0xE
66 #define VBIOSSMC_MSG_IsPeriodicRetrainingDisabled 0xF
67
68 #define VBIOSSMC_Status_BUSY 0x0
69 #define VBIOSSMC_Result_OK 0x1
70 #define VBIOSSMC_Result_Failed 0xFF
71 #define VBIOSSMC_Result_UnknownCmd 0xFE
72 #define VBIOSSMC_Result_CmdRejectedPrereq 0xFD
73 #define VBIOSSMC_Result_CmdRejectedBusy 0xFC
74
75 /*
76 * Function to be used instead of REG_WAIT macro because the wait ends when
77 * the register is NOT EQUAL to zero, and because the translation in msg_if.h
78 * won't work with REG_WAIT.
79 */
rn_smu_wait_for_response(struct clk_mgr_internal * clk_mgr,unsigned int delay_us,unsigned int max_retries)80 static uint32_t rn_smu_wait_for_response(struct clk_mgr_internal *clk_mgr, unsigned int delay_us, unsigned int max_retries)
81 {
82 uint32_t res_val = VBIOSSMC_Status_BUSY;
83
84 do {
85 res_val = REG_READ(MP1_SMN_C2PMSG_91);
86 if (res_val != VBIOSSMC_Status_BUSY)
87 break;
88
89 if (delay_us >= 1000)
90 msleep(delay_us/1000);
91 else if (delay_us > 0)
92 udelay(delay_us);
93 } while (max_retries--);
94
95 return res_val;
96 }
97
98
rn_vbios_smu_send_msg_with_param(struct clk_mgr_internal * clk_mgr,unsigned int msg_id,unsigned int param)99 static int rn_vbios_smu_send_msg_with_param(struct clk_mgr_internal *clk_mgr,
100 unsigned int msg_id,
101 unsigned int param)
102 {
103 uint32_t result;
104
105 result = rn_smu_wait_for_response(clk_mgr, 10, 200000);
106
107 if (result != VBIOSSMC_Result_OK)
108 smu_print("SMU Response was not OK. SMU response after wait received is: %d\n", result);
109
110 if (result == VBIOSSMC_Status_BUSY) {
111 return -1;
112 }
113
114 /* First clear response register */
115 REG_WRITE(MP1_SMN_C2PMSG_91, VBIOSSMC_Status_BUSY);
116
117 /* Set the parameter register for the SMU message, unit is Mhz */
118 REG_WRITE(MP1_SMN_C2PMSG_83, param);
119
120 /* Trigger the message transaction by writing the message ID */
121 REG_WRITE(MP1_SMN_C2PMSG_67, msg_id);
122
123 result = rn_smu_wait_for_response(clk_mgr, 10, 200000);
124
125 if (IS_SMU_TIMEOUT(result)) {
126 ASSERT(0);
127 dm_helpers_smu_timeout(CTX, msg_id, param, 10 * 200000);
128 }
129
130 /* Actual dispclk set is returned in the parameter register */
131 return REG_READ(MP1_SMN_C2PMSG_83);
132 }
133
rn_vbios_smu_get_smu_version(struct clk_mgr_internal * clk_mgr)134 int rn_vbios_smu_get_smu_version(struct clk_mgr_internal *clk_mgr)
135 {
136 return rn_vbios_smu_send_msg_with_param(
137 clk_mgr,
138 VBIOSSMC_MSG_GetSmuVersion,
139 0);
140 }
141
142
rn_vbios_smu_set_dispclk(struct clk_mgr_internal * clk_mgr,int requested_dispclk_khz)143 int rn_vbios_smu_set_dispclk(struct clk_mgr_internal *clk_mgr, int requested_dispclk_khz)
144 {
145 int actual_dispclk_set_mhz = -1;
146 struct dc *dc = clk_mgr->base.ctx->dc;
147 struct dmcu *dmcu = dc->res_pool->dmcu;
148
149 /* Unit of SMU msg parameter is Mhz */
150 actual_dispclk_set_mhz = rn_vbios_smu_send_msg_with_param(
151 clk_mgr,
152 VBIOSSMC_MSG_SetDispclkFreq,
153 khz_to_mhz_ceil(requested_dispclk_khz));
154
155 if (dmcu && dmcu->funcs->is_dmcu_initialized(dmcu)) {
156 if (clk_mgr->dfs_bypass_disp_clk != actual_dispclk_set_mhz)
157 dmcu->funcs->set_psr_wait_loop(dmcu,
158 actual_dispclk_set_mhz / 7);
159 }
160
161 // pmfw always set clock more than or equal requested clock
162 ASSERT(actual_dispclk_set_mhz >= khz_to_mhz_ceil(requested_dispclk_khz));
163
164 return actual_dispclk_set_mhz * 1000;
165 }
166
rn_vbios_smu_set_hard_min_dcfclk(struct clk_mgr_internal * clk_mgr,int requested_dcfclk_khz)167 int rn_vbios_smu_set_hard_min_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_dcfclk_khz)
168 {
169 int actual_dcfclk_set_mhz = -1;
170
171 if (clk_mgr->smu_ver < 0x370c00)
172 return actual_dcfclk_set_mhz;
173
174 actual_dcfclk_set_mhz = rn_vbios_smu_send_msg_with_param(
175 clk_mgr,
176 VBIOSSMC_MSG_SetHardMinDcfclkByFreq,
177 khz_to_mhz_ceil(requested_dcfclk_khz));
178
179 return actual_dcfclk_set_mhz * 1000;
180 }
181
rn_vbios_smu_set_min_deep_sleep_dcfclk(struct clk_mgr_internal * clk_mgr,int requested_min_ds_dcfclk_khz)182 int rn_vbios_smu_set_min_deep_sleep_dcfclk(struct clk_mgr_internal *clk_mgr, int requested_min_ds_dcfclk_khz)
183 {
184 int actual_min_ds_dcfclk_mhz = -1;
185
186 if (clk_mgr->smu_ver < 0x370c00)
187 return actual_min_ds_dcfclk_mhz;
188
189 actual_min_ds_dcfclk_mhz = rn_vbios_smu_send_msg_with_param(
190 clk_mgr,
191 VBIOSSMC_MSG_SetMinDeepSleepDcfclk,
192 khz_to_mhz_ceil(requested_min_ds_dcfclk_khz));
193
194 return actual_min_ds_dcfclk_mhz * 1000;
195 }
196
rn_vbios_smu_set_phyclk(struct clk_mgr_internal * clk_mgr,int requested_phyclk_khz)197 void rn_vbios_smu_set_phyclk(struct clk_mgr_internal *clk_mgr, int requested_phyclk_khz)
198 {
199 rn_vbios_smu_send_msg_with_param(
200 clk_mgr,
201 VBIOSSMC_MSG_SetPhyclkVoltageByFreq,
202 khz_to_mhz_ceil(requested_phyclk_khz));
203 }
204
rn_vbios_smu_set_dppclk(struct clk_mgr_internal * clk_mgr,int requested_dpp_khz)205 int rn_vbios_smu_set_dppclk(struct clk_mgr_internal *clk_mgr, int requested_dpp_khz)
206 {
207 int actual_dppclk_set_mhz = -1;
208
209 actual_dppclk_set_mhz = rn_vbios_smu_send_msg_with_param(
210 clk_mgr,
211 VBIOSSMC_MSG_SetDppclkFreq,
212 khz_to_mhz_ceil(requested_dpp_khz));
213
214 ASSERT(actual_dppclk_set_mhz >= khz_to_mhz_ceil(requested_dpp_khz));
215
216 return actual_dppclk_set_mhz * 1000;
217 }
218
rn_vbios_smu_set_dcn_low_power_state(struct clk_mgr_internal * clk_mgr,enum dcn_pwr_state state)219 void rn_vbios_smu_set_dcn_low_power_state(struct clk_mgr_internal *clk_mgr, enum dcn_pwr_state state)
220 {
221 int disp_count;
222
223 if (state == DCN_PWR_STATE_LOW_POWER)
224 disp_count = 0;
225 else
226 disp_count = 1;
227
228 rn_vbios_smu_send_msg_with_param(
229 clk_mgr,
230 VBIOSSMC_MSG_SetDisplayCount,
231 disp_count);
232 }
233
rn_vbios_smu_enable_48mhz_tmdp_refclk_pwrdwn(struct clk_mgr_internal * clk_mgr,bool enable)234 void rn_vbios_smu_enable_48mhz_tmdp_refclk_pwrdwn(struct clk_mgr_internal *clk_mgr, bool enable)
235 {
236 rn_vbios_smu_send_msg_with_param(
237 clk_mgr,
238 VBIOSSMC_MSG_EnableTmdp48MHzRefclkPwrDown,
239 enable);
240 }
241
rn_vbios_smu_enable_pme_wa(struct clk_mgr_internal * clk_mgr)242 void rn_vbios_smu_enable_pme_wa(struct clk_mgr_internal *clk_mgr)
243 {
244 rn_vbios_smu_send_msg_with_param(
245 clk_mgr,
246 VBIOSSMC_MSG_UpdatePmeRestore,
247 0);
248 }
249
rn_vbios_smu_is_periodic_retraining_disabled(struct clk_mgr_internal * clk_mgr)250 int rn_vbios_smu_is_periodic_retraining_disabled(struct clk_mgr_internal *clk_mgr)
251 {
252 return rn_vbios_smu_send_msg_with_param(
253 clk_mgr,
254 VBIOSSMC_MSG_IsPeriodicRetrainingDisabled,
255 1); // if PMFW doesn't support this message, assume retraining is disabled
256 // so we only use most optimal watermark if we know retraining is enabled.
257 }
258