xref: /openbmc/linux/drivers/gpu/drm/radeon/sumo_smc.c (revision 55a79cc2)
1 /*
2  * Copyright 2012 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 
24 #include "radeon.h"
25 #include "sumod.h"
26 #include "sumo_dpm.h"
27 #include "ppsmc.h"
28 
29 #define SUMO_SMU_SERVICE_ROUTINE_PG_INIT        1
30 #define SUMO_SMU_SERVICE_ROUTINE_ALTVDDNB_NOTIFY  27
31 #define SUMO_SMU_SERVICE_ROUTINE_GFX_SRV_ID_20  20
32 
sumo_send_msg_to_smu(struct radeon_device * rdev,u32 id)33 static void sumo_send_msg_to_smu(struct radeon_device *rdev, u32 id)
34 {
35 	u32 gfx_int_req;
36 	int i;
37 
38 	for (i = 0; i < rdev->usec_timeout; i++) {
39 		if (RREG32(GFX_INT_STATUS) & INT_DONE)
40 			break;
41 		udelay(1);
42 	}
43 
44 	gfx_int_req = SERV_INDEX(id) | INT_REQ;
45 	WREG32(GFX_INT_REQ, gfx_int_req);
46 
47 	for (i = 0; i < rdev->usec_timeout; i++) {
48 		if (RREG32(GFX_INT_REQ) & INT_REQ)
49 			break;
50 		udelay(1);
51 	}
52 
53 	for (i = 0; i < rdev->usec_timeout; i++) {
54 		if (RREG32(GFX_INT_STATUS) & INT_ACK)
55 			break;
56 		udelay(1);
57 	}
58 
59 	for (i = 0; i < rdev->usec_timeout; i++) {
60 		if (RREG32(GFX_INT_STATUS) & INT_DONE)
61 			break;
62 		udelay(1);
63 	}
64 
65 	gfx_int_req &= ~INT_REQ;
66 	WREG32(GFX_INT_REQ, gfx_int_req);
67 }
68 
sumo_initialize_m3_arb(struct radeon_device * rdev)69 void sumo_initialize_m3_arb(struct radeon_device *rdev)
70 {
71 	struct sumo_power_info *pi = sumo_get_pi(rdev);
72 	u32 i;
73 
74 	if (!pi->enable_dynamic_m3_arbiter)
75 		return;
76 
77 	for (i = 0; i < NUMBER_OF_M3ARB_PARAM_SETS; i++)
78 		WREG32_RCU(MCU_M3ARB_PARAMS + (i * 4),
79 			   pi->sys_info.csr_m3_arb_cntl_default[i]);
80 
81 	for (; i < NUMBER_OF_M3ARB_PARAM_SETS * 2; i++)
82 		WREG32_RCU(MCU_M3ARB_PARAMS + (i * 4),
83 			   pi->sys_info.csr_m3_arb_cntl_uvd[i % NUMBER_OF_M3ARB_PARAM_SETS]);
84 
85 	for (; i < NUMBER_OF_M3ARB_PARAM_SETS * 3; i++)
86 		WREG32_RCU(MCU_M3ARB_PARAMS + (i * 4),
87 			   pi->sys_info.csr_m3_arb_cntl_fs3d[i % NUMBER_OF_M3ARB_PARAM_SETS]);
88 }
89 
sumo_is_alt_vddnb_supported(struct radeon_device * rdev)90 static bool sumo_is_alt_vddnb_supported(struct radeon_device *rdev)
91 {
92 	struct sumo_power_info *pi = sumo_get_pi(rdev);
93 	bool return_code = false;
94 
95 	if (!pi->enable_alt_vddnb)
96 		return return_code;
97 
98 	if ((rdev->family == CHIP_SUMO) || (rdev->family == CHIP_SUMO2)) {
99 		if (pi->fw_version >= 0x00010C00)
100 			return_code = true;
101 	}
102 
103 	return return_code;
104 }
105 
sumo_smu_notify_alt_vddnb_change(struct radeon_device * rdev,bool powersaving,bool force_nbps1)106 void sumo_smu_notify_alt_vddnb_change(struct radeon_device *rdev,
107 				      bool powersaving, bool force_nbps1)
108 {
109 	u32 param = 0;
110 
111 	if (!sumo_is_alt_vddnb_supported(rdev))
112 		return;
113 
114 	if (powersaving)
115 		param |= 1;
116 
117 	if (force_nbps1)
118 		param |= 2;
119 
120 	WREG32_RCU(RCU_ALTVDDNB_NOTIFY, param);
121 
122 	sumo_send_msg_to_smu(rdev, SUMO_SMU_SERVICE_ROUTINE_ALTVDDNB_NOTIFY);
123 }
124 
sumo_smu_pg_init(struct radeon_device * rdev)125 void sumo_smu_pg_init(struct radeon_device *rdev)
126 {
127 	sumo_send_msg_to_smu(rdev, SUMO_SMU_SERVICE_ROUTINE_PG_INIT);
128 }
129 
sumo_power_of_4(u32 unit)130 static u32 sumo_power_of_4(u32 unit)
131 {
132 	u32 ret = 1;
133 	u32 i;
134 
135 	for (i = 0; i < unit; i++)
136 		ret *= 4;
137 
138 	return ret;
139 }
140 
sumo_enable_boost_timer(struct radeon_device * rdev)141 void sumo_enable_boost_timer(struct radeon_device *rdev)
142 {
143 	struct sumo_power_info *pi = sumo_get_pi(rdev);
144 	u32 period, unit, timer_value;
145 	u32 xclk = radeon_get_xclk(rdev);
146 
147 	unit = (RREG32_RCU(RCU_LCLK_SCALING_CNTL) & LCLK_SCALING_TIMER_PRESCALER_MASK)
148 		>> LCLK_SCALING_TIMER_PRESCALER_SHIFT;
149 
150 	period = 100 * (xclk / 100 / sumo_power_of_4(unit));
151 
152 	timer_value = (period << 16) | (unit << 4);
153 
154 	WREG32_RCU(RCU_GNB_PWR_REP_TIMER_CNTL, timer_value);
155 	WREG32_RCU(RCU_BOOST_MARGIN, pi->sys_info.sclk_dpm_boost_margin);
156 	WREG32_RCU(RCU_THROTTLE_MARGIN, pi->sys_info.sclk_dpm_throttle_margin);
157 	WREG32_RCU(GNB_TDP_LIMIT, pi->sys_info.gnb_tdp_limit);
158 	WREG32_RCU(RCU_SclkDpmTdpLimitPG, pi->sys_info.sclk_dpm_tdp_limit_pg);
159 
160 	sumo_send_msg_to_smu(rdev, SUMO_SMU_SERVICE_ROUTINE_GFX_SRV_ID_20);
161 }
162 
sumo_set_tdp_limit(struct radeon_device * rdev,u32 index,u32 tdp_limit)163 void sumo_set_tdp_limit(struct radeon_device *rdev, u32 index, u32 tdp_limit)
164 {
165 	u32 regoffset = 0;
166 	u32 shift = 0;
167 	u32 mask = 0xFFF;
168 	u32 sclk_dpm_tdp_limit;
169 
170 	switch (index) {
171 	case 0:
172 		regoffset = RCU_SclkDpmTdpLimit01;
173 		shift = 16;
174 		break;
175 	case 1:
176 		regoffset = RCU_SclkDpmTdpLimit01;
177 		shift = 0;
178 		break;
179 	case 2:
180 		regoffset = RCU_SclkDpmTdpLimit23;
181 		shift = 16;
182 		break;
183 	case 3:
184 		regoffset = RCU_SclkDpmTdpLimit23;
185 		shift = 0;
186 		break;
187 	case 4:
188 		regoffset = RCU_SclkDpmTdpLimit47;
189 		shift = 16;
190 		break;
191 	case 7:
192 		regoffset = RCU_SclkDpmTdpLimit47;
193 		shift = 0;
194 		break;
195 	default:
196 		break;
197 	}
198 
199 	sclk_dpm_tdp_limit = RREG32_RCU(regoffset);
200 	sclk_dpm_tdp_limit &= ~(mask << shift);
201 	sclk_dpm_tdp_limit |= (tdp_limit << shift);
202 	WREG32_RCU(regoffset, sclk_dpm_tdp_limit);
203 }
204 
sumo_boost_state_enable(struct radeon_device * rdev,bool enable)205 void sumo_boost_state_enable(struct radeon_device *rdev, bool enable)
206 {
207 	u32 boost_disable = RREG32_RCU(RCU_GPU_BOOST_DISABLE);
208 
209 	boost_disable &= 0xFFFFFFFE;
210 	boost_disable |= (enable ? 0 : 1);
211 	WREG32_RCU(RCU_GPU_BOOST_DISABLE, boost_disable);
212 }
213 
sumo_get_running_fw_version(struct radeon_device * rdev)214 u32 sumo_get_running_fw_version(struct radeon_device *rdev)
215 {
216 	return RREG32_RCU(RCU_FW_VERSION);
217 }
218 
219