treewide: replace '---help---' in Kconfig files with 'help'
[linux-2.6-microblaze.git] / drivers / gpu / drm / radeon / sumo_smc.c
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
33 struct sumo_power_info *sumo_get_pi(struct radeon_device *rdev);
34
35 static void sumo_send_msg_to_smu(struct radeon_device *rdev, u32 id)
36 {
37         u32 gfx_int_req;
38         int i;
39
40         for (i = 0; i < rdev->usec_timeout; i++) {
41                 if (RREG32(GFX_INT_STATUS) & INT_DONE)
42                         break;
43                 udelay(1);
44         }
45
46         gfx_int_req = SERV_INDEX(id) | INT_REQ;
47         WREG32(GFX_INT_REQ, gfx_int_req);
48
49         for (i = 0; i < rdev->usec_timeout; i++) {
50                 if (RREG32(GFX_INT_REQ) & INT_REQ)
51                         break;
52                 udelay(1);
53         }
54
55         for (i = 0; i < rdev->usec_timeout; i++) {
56                 if (RREG32(GFX_INT_STATUS) & INT_ACK)
57                         break;
58                 udelay(1);
59         }
60
61         for (i = 0; i < rdev->usec_timeout; i++) {
62                 if (RREG32(GFX_INT_STATUS) & INT_DONE)
63                         break;
64                 udelay(1);
65         }
66
67         gfx_int_req &= ~INT_REQ;
68         WREG32(GFX_INT_REQ, gfx_int_req);
69 }
70
71 void sumo_initialize_m3_arb(struct radeon_device *rdev)
72 {
73         struct sumo_power_info *pi = sumo_get_pi(rdev);
74         u32 i;
75
76         if (!pi->enable_dynamic_m3_arbiter)
77                 return;
78
79         for (i = 0; i < NUMBER_OF_M3ARB_PARAM_SETS; i++)
80                 WREG32_RCU(MCU_M3ARB_PARAMS + (i * 4),
81                            pi->sys_info.csr_m3_arb_cntl_default[i]);
82
83         for (; i < NUMBER_OF_M3ARB_PARAM_SETS * 2; i++)
84                 WREG32_RCU(MCU_M3ARB_PARAMS + (i * 4),
85                            pi->sys_info.csr_m3_arb_cntl_uvd[i % NUMBER_OF_M3ARB_PARAM_SETS]);
86
87         for (; i < NUMBER_OF_M3ARB_PARAM_SETS * 3; i++)
88                 WREG32_RCU(MCU_M3ARB_PARAMS + (i * 4),
89                            pi->sys_info.csr_m3_arb_cntl_fs3d[i % NUMBER_OF_M3ARB_PARAM_SETS]);
90 }
91
92 static bool sumo_is_alt_vddnb_supported(struct radeon_device *rdev)
93 {
94         struct sumo_power_info *pi = sumo_get_pi(rdev);
95         bool return_code = false;
96
97         if (!pi->enable_alt_vddnb)
98                 return return_code;
99
100         if ((rdev->family == CHIP_SUMO) || (rdev->family == CHIP_SUMO2)) {
101                 if (pi->fw_version >= 0x00010C00)
102                         return_code = true;
103         }
104
105         return return_code;
106 }
107
108 void sumo_smu_notify_alt_vddnb_change(struct radeon_device *rdev,
109                                       bool powersaving, bool force_nbps1)
110 {
111         u32 param = 0;
112
113         if (!sumo_is_alt_vddnb_supported(rdev))
114                 return;
115
116         if (powersaving)
117                 param |= 1;
118
119         if (force_nbps1)
120                 param |= 2;
121
122         WREG32_RCU(RCU_ALTVDDNB_NOTIFY, param);
123
124         sumo_send_msg_to_smu(rdev, SUMO_SMU_SERVICE_ROUTINE_ALTVDDNB_NOTIFY);
125 }
126
127 void sumo_smu_pg_init(struct radeon_device *rdev)
128 {
129         sumo_send_msg_to_smu(rdev, SUMO_SMU_SERVICE_ROUTINE_PG_INIT);
130 }
131
132 static u32 sumo_power_of_4(u32 unit)
133 {
134         u32 ret = 1;
135         u32 i;
136
137         for (i = 0; i < unit; i++)
138                 ret *= 4;
139
140         return ret;
141 }
142
143 void sumo_enable_boost_timer(struct radeon_device *rdev)
144 {
145         struct sumo_power_info *pi = sumo_get_pi(rdev);
146         u32 period, unit, timer_value;
147         u32 xclk = radeon_get_xclk(rdev);
148
149         unit = (RREG32_RCU(RCU_LCLK_SCALING_CNTL) & LCLK_SCALING_TIMER_PRESCALER_MASK)
150                 >> LCLK_SCALING_TIMER_PRESCALER_SHIFT;
151
152         period = 100 * (xclk / 100 / sumo_power_of_4(unit));
153
154         timer_value = (period << 16) | (unit << 4);
155
156         WREG32_RCU(RCU_GNB_PWR_REP_TIMER_CNTL, timer_value);
157         WREG32_RCU(RCU_BOOST_MARGIN, pi->sys_info.sclk_dpm_boost_margin);
158         WREG32_RCU(RCU_THROTTLE_MARGIN, pi->sys_info.sclk_dpm_throttle_margin);
159         WREG32_RCU(GNB_TDP_LIMIT, pi->sys_info.gnb_tdp_limit);
160         WREG32_RCU(RCU_SclkDpmTdpLimitPG, pi->sys_info.sclk_dpm_tdp_limit_pg);
161
162         sumo_send_msg_to_smu(rdev, SUMO_SMU_SERVICE_ROUTINE_GFX_SRV_ID_20);
163 }
164
165 void sumo_set_tdp_limit(struct radeon_device *rdev, u32 index, u32 tdp_limit)
166 {
167         u32 regoffset = 0;
168         u32 shift = 0;
169         u32 mask = 0xFFF;
170         u32 sclk_dpm_tdp_limit;
171
172         switch (index) {
173         case 0:
174                 regoffset = RCU_SclkDpmTdpLimit01;
175                 shift = 16;
176                 break;
177         case 1:
178                 regoffset = RCU_SclkDpmTdpLimit01;
179                 shift = 0;
180                 break;
181         case 2:
182                 regoffset = RCU_SclkDpmTdpLimit23;
183                 shift = 16;
184                 break;
185         case 3:
186                 regoffset = RCU_SclkDpmTdpLimit23;
187                 shift = 0;
188                 break;
189         case 4:
190                 regoffset = RCU_SclkDpmTdpLimit47;
191                 shift = 16;
192                 break;
193         case 7:
194                 regoffset = RCU_SclkDpmTdpLimit47;
195                 shift = 0;
196                 break;
197         default:
198                 break;
199         }
200
201         sclk_dpm_tdp_limit = RREG32_RCU(regoffset);
202         sclk_dpm_tdp_limit &= ~(mask << shift);
203         sclk_dpm_tdp_limit |= (tdp_limit << shift);
204         WREG32_RCU(regoffset, sclk_dpm_tdp_limit);
205 }
206
207 void sumo_boost_state_enable(struct radeon_device *rdev, bool enable)
208 {
209         u32 boost_disable = RREG32_RCU(RCU_GPU_BOOST_DISABLE);
210
211         boost_disable &= 0xFFFFFFFE;
212         boost_disable |= (enable ? 0 : 1);
213         WREG32_RCU(RCU_GPU_BOOST_DISABLE, boost_disable);
214 }
215
216 u32 sumo_get_running_fw_version(struct radeon_device *rdev)
217 {
218         return RREG32_RCU(RCU_FW_VERSION);
219 }
220