2 * Copyright 2012 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
28 struct nv84_therm_priv
{
29 struct nouveau_therm_priv base
;
33 nv84_temp_get(struct nouveau_therm
*therm
)
35 return nv_rd32(therm
, 0x20400);
39 nv84_therm_program_alarms(struct nouveau_therm
*therm
)
41 struct nouveau_therm_priv
*priv
= (void *)therm
;
42 struct nvbios_therm_sensor
*sensor
= &priv
->bios_sensor
;
45 spin_lock_irqsave(&priv
->sensor
.alarm_program_lock
, flags
);
47 /* enable RISING and FALLING IRQs for shutdown, THRS 0, 1, 2 and 4 */
48 nv_wr32(therm
, 0x20000, 0x000003ff);
50 /* shutdown: The computer should be shutdown when reached */
51 nv_wr32(therm
, 0x20484, sensor
->thrs_shutdown
.hysteresis
);
52 nv_wr32(therm
, 0x20480, sensor
->thrs_shutdown
.temp
);
54 /* THRS_1 : fan boost*/
55 nv_wr32(therm
, 0x204c4, sensor
->thrs_fan_boost
.temp
);
57 /* THRS_2 : critical */
58 nv_wr32(therm
, 0x204c0, sensor
->thrs_critical
.temp
);
60 /* THRS_4 : down clock */
61 nv_wr32(therm
, 0x20414, sensor
->thrs_down_clock
.temp
);
62 spin_unlock_irqrestore(&priv
->sensor
.alarm_program_lock
, flags
);
65 "Programmed thresholds [ %d(%d), %d(%d), %d(%d), %d(%d) ]\n",
66 sensor
->thrs_fan_boost
.temp
, sensor
->thrs_fan_boost
.hysteresis
,
67 sensor
->thrs_down_clock
.temp
,
68 sensor
->thrs_down_clock
.hysteresis
,
69 sensor
->thrs_critical
.temp
, sensor
->thrs_critical
.hysteresis
,
70 sensor
->thrs_shutdown
.temp
, sensor
->thrs_shutdown
.hysteresis
);
74 /* must be called with alarm_program_lock taken ! */
76 nv84_therm_threshold_hyst_emulation(struct nouveau_therm
*therm
,
77 uint32_t thrs_reg
, u8 status_bit
,
78 const struct nvbios_therm_threshold
*thrs
,
79 enum nouveau_therm_thrs thrs_name
)
81 enum nouveau_therm_thrs_direction direction
;
82 enum nouveau_therm_thrs_state prev_state
, new_state
;
85 prev_state
= nouveau_therm_sensor_get_threshold_state(therm
, thrs_name
);
86 temp
= nv_rd32(therm
, thrs_reg
);
88 /* program the next threshold */
89 if (temp
== thrs
->temp
) {
90 nv_wr32(therm
, thrs_reg
, thrs
->temp
- thrs
->hysteresis
);
91 new_state
= NOUVEAU_THERM_THRS_HIGHER
;
93 nv_wr32(therm
, thrs_reg
, thrs
->temp
);
94 new_state
= NOUVEAU_THERM_THRS_LOWER
;
97 /* fix the state (in case someone reprogrammed the alarms) */
98 cur
= therm
->temp_get(therm
);
99 if (new_state
== NOUVEAU_THERM_THRS_LOWER
&& cur
> thrs
->temp
)
100 new_state
= NOUVEAU_THERM_THRS_HIGHER
;
101 else if (new_state
== NOUVEAU_THERM_THRS_HIGHER
&&
102 cur
< thrs
->temp
- thrs
->hysteresis
)
103 new_state
= NOUVEAU_THERM_THRS_LOWER
;
104 nouveau_therm_sensor_set_threshold_state(therm
, thrs_name
, new_state
);
106 /* find the direction */
107 if (prev_state
< new_state
)
108 direction
= NOUVEAU_THERM_THRS_RISING
;
109 else if (prev_state
> new_state
)
110 direction
= NOUVEAU_THERM_THRS_FALLING
;
114 /* advertise a change in direction */
115 nouveau_therm_sensor_event(therm
, thrs_name
, direction
);
119 nv84_therm_intr(struct nouveau_subdev
*subdev
)
121 struct nouveau_therm
*therm
= nouveau_therm(subdev
);
122 struct nouveau_therm_priv
*priv
= (void *)therm
;
123 struct nvbios_therm_sensor
*sensor
= &priv
->bios_sensor
;
127 spin_lock_irqsave(&priv
->sensor
.alarm_program_lock
, flags
);
129 intr
= nv_rd32(therm
, 0x20100);
131 /* THRS_4: downclock */
133 nv84_therm_threshold_hyst_emulation(therm
, 0x20414, 24,
134 &sensor
->thrs_down_clock
,
135 NOUVEAU_THERM_THRS_DOWNCLOCK
);
141 nv84_therm_threshold_hyst_emulation(therm
, 0x20480, 20,
142 &sensor
->thrs_shutdown
,
143 NOUVEAU_THERM_THRS_SHUTDOWN
);
147 /* THRS_1 : fan boost */
149 nv84_therm_threshold_hyst_emulation(therm
, 0x204c4, 21,
150 &sensor
->thrs_fan_boost
,
151 NOUVEAU_THERM_THRS_FANBOOST
);
155 /* THRS_2 : critical */
157 nv84_therm_threshold_hyst_emulation(therm
, 0x204c0, 22,
158 &sensor
->thrs_critical
,
159 NOUVEAU_THERM_THRS_CRITICAL
);
164 nv_error(therm
, "unhandled intr 0x%08x\n", intr
);
167 nv_wr32(therm
, 0x20100, 0xffffffff);
168 nv_wr32(therm
, 0x1100, 0x10000); /* PBUS */
170 spin_unlock_irqrestore(&priv
->sensor
.alarm_program_lock
, flags
);
174 nv84_therm_ctor(struct nouveau_object
*parent
,
175 struct nouveau_object
*engine
,
176 struct nouveau_oclass
*oclass
, void *data
, u32 size
,
177 struct nouveau_object
**pobject
)
179 struct nv84_therm_priv
*priv
;
182 ret
= nouveau_therm_create(parent
, engine
, oclass
, &priv
);
183 *pobject
= nv_object(priv
);
187 priv
->base
.base
.pwm_ctrl
= nv50_fan_pwm_ctrl
;
188 priv
->base
.base
.pwm_get
= nv50_fan_pwm_get
;
189 priv
->base
.base
.pwm_set
= nv50_fan_pwm_set
;
190 priv
->base
.base
.pwm_clock
= nv50_fan_pwm_clock
;
191 priv
->base
.base
.temp_get
= nv84_temp_get
;
192 priv
->base
.sensor
.program_alarms
= nv84_therm_program_alarms
;
193 nv_subdev(priv
)->intr
= nv84_therm_intr
;
195 /* init the thresholds */
196 nouveau_therm_sensor_set_threshold_state(&priv
->base
.base
,
197 NOUVEAU_THERM_THRS_SHUTDOWN
,
198 NOUVEAU_THERM_THRS_LOWER
);
199 nouveau_therm_sensor_set_threshold_state(&priv
->base
.base
,
200 NOUVEAU_THERM_THRS_FANBOOST
,
201 NOUVEAU_THERM_THRS_LOWER
);
202 nouveau_therm_sensor_set_threshold_state(&priv
->base
.base
,
203 NOUVEAU_THERM_THRS_CRITICAL
,
204 NOUVEAU_THERM_THRS_LOWER
);
205 nouveau_therm_sensor_set_threshold_state(&priv
->base
.base
,
206 NOUVEAU_THERM_THRS_DOWNCLOCK
,
207 NOUVEAU_THERM_THRS_LOWER
);
209 return nouveau_therm_preinit(&priv
->base
.base
);
212 struct nouveau_oclass
213 nv84_therm_oclass
= {
214 .handle
= NV_SUBDEV(THERM
, 0x84),
215 .ofuncs
= &(struct nouveau_ofuncs
) {
216 .ctor
= nv84_therm_ctor
,
217 .dtor
= _nouveau_therm_dtor
,
218 .init
= _nouveau_therm_init
,
219 .fini
= _nouveau_therm_fini
,