1 /*
2  * Copyright 2019 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  */
23 #include "amdgpu.h"
24 #include "polaris_baco.h"
25 
26 #include "gmc/gmc_8_1_d.h"
27 #include "gmc/gmc_8_1_sh_mask.h"
28 
29 #include "bif/bif_5_0_d.h"
30 #include "bif/bif_5_0_sh_mask.h"
31 
32 #include "dce/dce_11_0_d.h"
33 #include "dce/dce_11_0_sh_mask.h"
34 
35 #include "smu/smu_7_1_3_d.h"
36 #include "smu/smu_7_1_3_sh_mask.h"
37 
38 static const struct baco_cmd_entry gpio_tbl[] =
39 {
40 	{ CMD_WRITE, mmGPIOPAD_EN, 0, 0, 0, 0x0 },
41 	{ CMD_WRITE, mmGPIOPAD_PD_EN, 0, 0, 0, 0x0 },
42 	{ CMD_WRITE, mmGPIOPAD_PU_EN, 0, 0, 0, 0x0 },
43 	{ CMD_WRITE, mmGPIOPAD_MASK, 0, 0, 0, 0xff77ffff },
44 	{ CMD_WRITE, mmDC_GPIO_DVODATA_EN, 0, 0, 0, 0x0 },
45 	{ CMD_WRITE, mmDC_GPIO_DVODATA_MASK, 0, 0, 0, 0xffffffff },
46 	{ CMD_WRITE, mmDC_GPIO_GENERIC_EN, 0, 0, 0, 0x0 },
47 	{ CMD_READMODIFYWRITE, mmDC_GPIO_GENERIC_MASK, 0, 0, 0, 0x03333333 },
48 	{ CMD_WRITE, mmDC_GPIO_SYNCA_EN, 0, 0, 0, 0x0 },
49 	{ CMD_READMODIFYWRITE, mmDC_GPIO_SYNCA_MASK, 0, 0, 0, 0x00001111 }
50 };
51 
52 static const struct baco_cmd_entry enable_fb_req_rej_tbl[] =
53 {
54 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, 0xC0300024 },
55 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, 0x1, 0x0, 0, 0x1 },
56 	{ CMD_WRITE, mmBIF_FB_EN, 0, 0, 0, 0x0 }
57 };
58 
59 static const struct baco_cmd_entry use_bclk_tbl[] =
60 {
61 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixCG_SPLL_FUNC_CNTL },
62 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, CG_SPLL_FUNC_CNTL__SPLL_BYPASS_EN_MASK, CG_SPLL_FUNC_CNTL__SPLL_BYPASS_EN__SHIFT, 0, 0x1 },
63 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, 0xC0500170 },
64 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, 0x4000000, 0x1a, 0, 0x1 },
65 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixGCK_DFS_BYPASS_CNTL },
66 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, GCK_DFS_BYPASS_CNTL__BYPASSACLK_MASK, GCK_DFS_BYPASS_CNTL__BYPASSACLK__SHIFT, 0, 0x1 },
67 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixMPLL_BYPASSCLK_SEL },
68 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, MPLL_BYPASSCLK_SEL__MPLL_CLKOUT_SEL_MASK, MPLL_BYPASSCLK_SEL__MPLL_CLKOUT_SEL__SHIFT, 0, 0x2 },
69 	{ CMD_READMODIFYWRITE, mmMPLL_CNTL_MODE, MPLL_CNTL_MODE__MPLL_SW_DIR_CONTROL_MASK, MPLL_CNTL_MODE__MPLL_SW_DIR_CONTROL__SHIFT, 0, 0x1 },
70 	{ CMD_READMODIFYWRITE, mmMPLL_CNTL_MODE, MPLL_CNTL_MODE__MPLL_MCLK_SEL_MASK, MPLL_CNTL_MODE__MPLL_MCLK_SEL__SHIFT, 0, 0x0 }
71 };
72 
73 static const struct baco_cmd_entry turn_off_plls_tbl[] =
74 {
75 	{ CMD_READMODIFYWRITE, mmDC_GPIO_PAD_STRENGTH_1, DC_GPIO_PAD_STRENGTH_1__GENLK_STRENGTH_SP_MASK, DC_GPIO_PAD_STRENGTH_1__GENLK_STRENGTH_SP__SHIFT, 0, 0x1 },
76 	{ CMD_DELAY_US, 0, 0, 0, 1, 0x0 },
77 	{ CMD_READMODIFYWRITE, mmMC_SEQ_DRAM, MC_SEQ_DRAM__RST_CTL_MASK, MC_SEQ_DRAM__RST_CTL__SHIFT, 0, 0x1 },
78 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, 0xC05002B0 },
79 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, 0x10, 0x4, 0, 0x1 },
80 	{ CMD_WAITFOR, mmGCK_SMC_IND_DATA, 0x10, 0, 1, 0 },
81 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, 0xC050032C },
82 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, 0x10, 0x4, 0, 0x1 },
83 	{ CMD_WAITFOR, mmGCK_SMC_IND_DATA, 0x10, 0, 1, 0 },
84 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, 0xC0500080 },
85 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, 0x1, 0x0, 0, 0x1 },
86 	{ CMD_READMODIFYWRITE, 0xda2, 0x40, 0x6, 0, 0x0 },
87 	{ CMD_DELAY_US, 0, 0, 0, 3, 0x0 },
88 	{ CMD_READMODIFYWRITE, 0xda2, 0x8, 0x3, 0, 0x0 },
89 	{ CMD_READMODIFYWRITE, 0xda2, 0x3fff00, 0x8, 0, 0x32 },
90 	{ CMD_DELAY_US, 0, 0, 0, 3, 0x0 },
91 	{ CMD_READMODIFYWRITE, mmMPLL_FUNC_CNTL_2, MPLL_FUNC_CNTL_2__ISO_DIS_P_MASK, MPLL_FUNC_CNTL_2__ISO_DIS_P__SHIFT, 0, 0x0 },
92 	{ CMD_DELAY_US, 0, 0, 0, 5, 0x0 }
93 };
94 
95 static const struct baco_cmd_entry clk_req_b_tbl[] =
96 {
97 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixTHM_CLK_CNTL },
98 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, THM_CLK_CNTL__CMON_CLK_SEL_MASK, THM_CLK_CNTL__CMON_CLK_SEL__SHIFT, 0, 0x1 },
99 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, THM_CLK_CNTL__TMON_CLK_SEL_MASK, THM_CLK_CNTL__TMON_CLK_SEL__SHIFT, 0, 0x1 },
100 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixMISC_CLK_CTRL },
101 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, MISC_CLK_CTRL__DEEP_SLEEP_CLK_SEL_MASK, MISC_CLK_CTRL__DEEP_SLEEP_CLK_SEL__SHIFT, 0, 0x1 },
102 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, MISC_CLK_CTRL__ZCLK_SEL_MASK, MISC_CLK_CTRL__ZCLK_SEL__SHIFT, 0, 0x1 },
103 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixCG_CLKPIN_CNTL },
104 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, CG_CLKPIN_CNTL__BCLK_AS_XCLK_MASK, CG_CLKPIN_CNTL__BCLK_AS_XCLK__SHIFT, 0, 0x0 },
105 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixCG_CLKPIN_CNTL_2 },
106 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, CG_CLKPIN_CNTL_2__FORCE_BIF_REFCLK_EN_MASK, CG_CLKPIN_CNTL_2__FORCE_BIF_REFCLK_EN__SHIFT, 0, 0x0 },
107 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixMPLL_BYPASSCLK_SEL },
108 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, MPLL_BYPASSCLK_SEL__MPLL_CLKOUT_SEL_MASK, MPLL_BYPASSCLK_SEL__MPLL_CLKOUT_SEL__SHIFT, 0,     0x4 }
109 };
110 
111 static const struct baco_cmd_entry enter_baco_tbl[] =
112 {
113 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_EN_MASK, BACO_CNTL__BACO_EN__SHIFT, 0, 0x01 },
114 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_BIF_SCLK_SWITCH_MASK, BACO_CNTL__BACO_BIF_SCLK_SWITCH__SHIFT, 0, 0x01 },
115 	{ CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__BACO_BIF_SCLK_SWITCH_MASK, 0, 5, 0x40000 },
116 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_BCLK_OFF_MASK, BACO_CNTL__BACO_BCLK_OFF__SHIFT, 0, 0x01 },
117 	{ CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__BACO_BCLK_OFF_MASK, 0, 5, 0x02 },
118 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_ISO_DIS_MASK, BACO_CNTL__BACO_ISO_DIS__SHIFT, 0, 0x00 },
119 	{ CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__BACO_ISO_DIS_MASK, 0, 5, 0x00 },
120 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_ANA_ISO_DIS_MASK, BACO_CNTL__BACO_ANA_ISO_DIS__SHIFT, 0, 0x00 },
121 	{ CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__BACO_ANA_ISO_DIS_MASK, 0, 5, 0x00 },
122 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_POWER_OFF_MASK, BACO_CNTL__BACO_POWER_OFF__SHIFT, 0, 0x01 },
123 	{ CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__BACO_POWER_OFF_MASK, 0, 5, 0x08 },
124 	{ CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__BACO_MODE_MASK, 0, 0xffffffff, 0x40 }
125 };
126 
127 #define BACO_CNTL__PWRGOOD_MASK  BACO_CNTL__PWRGOOD_GPIO_MASK+BACO_CNTL__PWRGOOD_MEM_MASK+BACO_CNTL__PWRGOOD_DVO_MASK
128 
129 static const struct baco_cmd_entry exit_baco_tbl[] =
130 {
131 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_RESET_EN_MASK, BACO_CNTL__BACO_RESET_EN__SHIFT, 0, 0x01 },
132 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_BCLK_OFF_MASK, BACO_CNTL__BACO_BCLK_OFF__SHIFT, 0, 0x00 },
133 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_POWER_OFF_MASK, BACO_CNTL__BACO_POWER_OFF__SHIFT, 0, 0x00 },
134 	{ CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__PWRGOOD_BF_MASK, 0, 0xffffffff, 0x200 },
135 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_ISO_DIS_MASK, BACO_CNTL__BACO_ISO_DIS__SHIFT, 0, 0x01 },
136 	{ CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__PWRGOOD_MASK, 0, 5, 0x1c00 },
137 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_ANA_ISO_DIS_MASK, BACO_CNTL__BACO_ANA_ISO_DIS__SHIFT, 0, 0x01 },
138 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_BIF_SCLK_SWITCH_MASK, BACO_CNTL__BACO_BIF_SCLK_SWITCH__SHIFT, 0, 0x00 },
139 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_RESET_EN_MASK, BACO_CNTL__BACO_RESET_EN__SHIFT, 0, 0x00 },
140 	{ CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__RCU_BIF_CONFIG_DONE_MASK, 0, 5, 0x100 },
141 	{ CMD_READMODIFYWRITE, mmBACO_CNTL, BACO_CNTL__BACO_EN_MASK, BACO_CNTL__BACO_EN__SHIFT, 0, 0x00 },
142 	{ CMD_WAITFOR, mmBACO_CNTL, BACO_CNTL__BACO_MODE_MASK, 0, 0xffffffff, 0x00 }
143 };
144 
145 static const struct baco_cmd_entry clean_baco_tbl[] =
146 {
147 	{ CMD_WRITE, mmBIOS_SCRATCH_6, 0, 0, 0, 0 },
148 	{ CMD_WRITE, mmBIOS_SCRATCH_7, 0, 0, 0, 0 }
149 };
150 
151 static const struct baco_cmd_entry use_bclk_tbl_vg[] =
152 {
153 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixCG_SPLL_FUNC_CNTL },
154 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, CG_SPLL_FUNC_CNTL__SPLL_BYPASS_EN_MASK, CG_SPLL_FUNC_CNTL__SPLL_BYPASS_EN__SHIFT, 0, 0x1 },
155 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, 0xC0500170 },
156 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, 0x4000000, 0x1a, 0, 0x1 },
157 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixGCK_DFS_BYPASS_CNTL },
158 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, GCK_DFS_BYPASS_CNTL__BYPASSACLK_MASK, GCK_DFS_BYPASS_CNTL__BYPASSACLK__SHIFT, 0, 0x1 },
159 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, ixMPLL_BYPASSCLK_SEL },
160 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, MPLL_BYPASSCLK_SEL__MPLL_CLKOUT_SEL_MASK, MPLL_BYPASSCLK_SEL__MPLL_CLKOUT_SEL__SHIFT, 0, 0x2 }
161 };
162 
163 static const struct baco_cmd_entry turn_off_plls_tbl_vg[] =
164 {
165 	{ CMD_READMODIFYWRITE, mmDC_GPIO_PAD_STRENGTH_1, DC_GPIO_PAD_STRENGTH_1__GENLK_STRENGTH_SP_MASK, DC_GPIO_PAD_STRENGTH_1__GENLK_STRENGTH_SP__SHIFT, 0, 0x1 },
166 	{ CMD_DELAY_US, 0, 0, 0, 1, 0x0 },
167 	{ CMD_READMODIFYWRITE, mmMC_SEQ_DRAM, MC_SEQ_DRAM__RST_CTL_MASK, MC_SEQ_DRAM__RST_CTL__SHIFT, 0, 0x1 },
168 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, 0xC05002B0 },
169 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, 0x10, 0x4, 0, 0x1 },
170 	{ CMD_WAITFOR, mmGCK_SMC_IND_DATA, 0x10, 0, 1, 0 },
171 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, 0xC050032C },
172 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, 0x10, 0x4, 0, 0x1 },
173 	{ CMD_WAITFOR, mmGCK_SMC_IND_DATA, 0x10, 0, 1, 0 },
174 	{ CMD_WRITE, mmGCK_SMC_IND_INDEX, 0, 0, 0, 0xC0500080 },
175 	{ CMD_READMODIFYWRITE, mmGCK_SMC_IND_DATA, 0x1, 0x0, 0, 0x1 },
176 	{ CMD_DELAY_US, 0, 0, 0, 3, 0x0 },
177 	{ CMD_DELAY_US, 0, 0, 0, 3, 0x0 },
178 	{ CMD_DELAY_US, 0, 0, 0, 5, 0x0 }
179 };
180 
polaris_baco_set_state(struct pp_hwmgr * hwmgr,enum BACO_STATE state)181 int polaris_baco_set_state(struct pp_hwmgr *hwmgr, enum BACO_STATE state)
182 {
183 	enum BACO_STATE cur_state;
184 
185 	smu7_baco_get_state(hwmgr, &cur_state);
186 
187 	if (cur_state == state)
188 		/* aisc already in the target state */
189 		return 0;
190 
191 	if (state == BACO_STATE_IN) {
192 		baco_program_registers(hwmgr, gpio_tbl, ARRAY_SIZE(gpio_tbl));
193 		baco_program_registers(hwmgr, enable_fb_req_rej_tbl,
194 				       ARRAY_SIZE(enable_fb_req_rej_tbl));
195 		if (hwmgr->chip_id == CHIP_VEGAM) {
196 			baco_program_registers(hwmgr, use_bclk_tbl_vg, ARRAY_SIZE(use_bclk_tbl_vg));
197 			baco_program_registers(hwmgr, turn_off_plls_tbl_vg,
198 					       ARRAY_SIZE(turn_off_plls_tbl_vg));
199 		} else {
200 			baco_program_registers(hwmgr, use_bclk_tbl, ARRAY_SIZE(use_bclk_tbl));
201 			baco_program_registers(hwmgr, turn_off_plls_tbl,
202 					       ARRAY_SIZE(turn_off_plls_tbl));
203 		}
204 		baco_program_registers(hwmgr, clk_req_b_tbl, ARRAY_SIZE(clk_req_b_tbl));
205 		if (baco_program_registers(hwmgr, enter_baco_tbl,
206 					   ARRAY_SIZE(enter_baco_tbl)))
207 			return 0;
208 
209 	} else if (state == BACO_STATE_OUT) {
210 		/* HW requires at least 20ms between regulator off and on */
211 		msleep(20);
212 		/* Execute Hardware BACO exit sequence */
213 		if (baco_program_registers(hwmgr, exit_baco_tbl,
214 					   ARRAY_SIZE(exit_baco_tbl))) {
215 			if (baco_program_registers(hwmgr, clean_baco_tbl,
216 						   ARRAY_SIZE(clean_baco_tbl)))
217 				return 0;
218 		}
219 	}
220 
221 	return -EINVAL;
222 }
223