1 /*
2 * Copyright 2013 Red Hat 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: Ben Skeggs
23 */
24 #include "priv.h"
25
26 #include <core/firmware.h>
27 #include <subdev/timer.h>
28
29 bool
nvkm_pmu_fan_controlled(struct nvkm_device * device)30 nvkm_pmu_fan_controlled(struct nvkm_device *device)
31 {
32 struct nvkm_pmu *pmu = device->pmu;
33
34 /* Internal PMU FW does not currently control fans in any way,
35 * allow SW control of fans instead.
36 */
37 if (pmu && pmu->func->code.size)
38 return false;
39
40 /* Default (board-loaded, or VBIOS PMU/PREOS) PMU FW on Fermi
41 * and newer automatically control the fan speed, which would
42 * interfere with SW control.
43 */
44 return (device->chipset >= 0xc0);
45 }
46
47 void
nvkm_pmu_pgob(struct nvkm_pmu * pmu,bool enable)48 nvkm_pmu_pgob(struct nvkm_pmu *pmu, bool enable)
49 {
50 if (pmu && pmu->func->pgob)
51 pmu->func->pgob(pmu, enable);
52 }
53
54 static void
nvkm_pmu_recv(struct work_struct * work)55 nvkm_pmu_recv(struct work_struct *work)
56 {
57 struct nvkm_pmu *pmu = container_of(work, typeof(*pmu), recv.work);
58 return pmu->func->recv(pmu);
59 }
60
61 int
nvkm_pmu_send(struct nvkm_pmu * pmu,u32 reply[2],u32 process,u32 message,u32 data0,u32 data1)62 nvkm_pmu_send(struct nvkm_pmu *pmu, u32 reply[2],
63 u32 process, u32 message, u32 data0, u32 data1)
64 {
65 if (!pmu || !pmu->func->send)
66 return -ENODEV;
67 return pmu->func->send(pmu, reply, process, message, data0, data1);
68 }
69
70 static void
nvkm_pmu_intr(struct nvkm_subdev * subdev)71 nvkm_pmu_intr(struct nvkm_subdev *subdev)
72 {
73 struct nvkm_pmu *pmu = nvkm_pmu(subdev);
74 if (!pmu->func->intr)
75 return;
76 pmu->func->intr(pmu);
77 }
78
79 static int
nvkm_pmu_fini(struct nvkm_subdev * subdev,bool suspend)80 nvkm_pmu_fini(struct nvkm_subdev *subdev, bool suspend)
81 {
82 struct nvkm_pmu *pmu = nvkm_pmu(subdev);
83
84 if (!subdev->use.enabled)
85 return 0;
86
87 if (pmu->func->fini)
88 pmu->func->fini(pmu);
89
90 return 0;
91 }
92
93 static int
nvkm_pmu_init(struct nvkm_subdev * subdev)94 nvkm_pmu_init(struct nvkm_subdev *subdev)
95 {
96 struct nvkm_pmu *pmu = nvkm_pmu(subdev);
97
98 if (!pmu->func->init)
99 return 0;
100
101 return pmu->func->init(pmu);
102 }
103
104 static void *
nvkm_pmu_dtor(struct nvkm_subdev * subdev)105 nvkm_pmu_dtor(struct nvkm_subdev *subdev)
106 {
107 struct nvkm_pmu *pmu = nvkm_pmu(subdev);
108 nvkm_falcon_msgq_del(&pmu->msgq);
109 nvkm_falcon_cmdq_del(&pmu->lpq);
110 nvkm_falcon_cmdq_del(&pmu->hpq);
111 nvkm_falcon_qmgr_del(&pmu->qmgr);
112 nvkm_falcon_dtor(&pmu->falcon);
113 mutex_destroy(&pmu->send.mutex);
114 return nvkm_pmu(subdev);
115 }
116
117 static const struct nvkm_subdev_func
118 nvkm_pmu = {
119 .dtor = nvkm_pmu_dtor,
120 .init = nvkm_pmu_init,
121 .fini = nvkm_pmu_fini,
122 .intr = nvkm_pmu_intr,
123 };
124
125 int
nvkm_pmu_ctor(const struct nvkm_pmu_fwif * fwif,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_pmu * pmu)126 nvkm_pmu_ctor(const struct nvkm_pmu_fwif *fwif, struct nvkm_device *device,
127 enum nvkm_subdev_type type, int inst, struct nvkm_pmu *pmu)
128 {
129 int ret;
130
131 nvkm_subdev_ctor(&nvkm_pmu, device, type, inst, &pmu->subdev);
132
133 mutex_init(&pmu->send.mutex);
134
135 INIT_WORK(&pmu->recv.work, nvkm_pmu_recv);
136 init_waitqueue_head(&pmu->recv.wait);
137
138 fwif = nvkm_firmware_load(&pmu->subdev, fwif, "Pmu", pmu);
139 if (IS_ERR(fwif))
140 return PTR_ERR(fwif);
141
142 pmu->func = fwif->func;
143
144 ret = nvkm_falcon_ctor(pmu->func->flcn, &pmu->subdev, pmu->subdev.name,
145 0x10a000, &pmu->falcon);
146 if (ret)
147 return ret;
148
149 if ((ret = nvkm_falcon_qmgr_new(&pmu->falcon, &pmu->qmgr)) ||
150 (ret = nvkm_falcon_cmdq_new(pmu->qmgr, "hpq", &pmu->hpq)) ||
151 (ret = nvkm_falcon_cmdq_new(pmu->qmgr, "lpq", &pmu->lpq)) ||
152 (ret = nvkm_falcon_msgq_new(pmu->qmgr, "msgq", &pmu->msgq)))
153 return ret;
154
155 init_completion(&pmu->wpr_ready);
156 return 0;
157 }
158
159 int
nvkm_pmu_new_(const struct nvkm_pmu_fwif * fwif,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_pmu ** ppmu)160 nvkm_pmu_new_(const struct nvkm_pmu_fwif *fwif, struct nvkm_device *device,
161 enum nvkm_subdev_type type, int inst, struct nvkm_pmu **ppmu)
162 {
163 struct nvkm_pmu *pmu;
164 if (!(pmu = *ppmu = kzalloc(sizeof(*pmu), GFP_KERNEL)))
165 return -ENOMEM;
166 return nvkm_pmu_ctor(fwif, device, type, inst, *ppmu);
167 }
168