base.c

  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
 29bool
 30nvkm_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
 47void
 48nvkm_pmu_pgob(struct nvkm_pmu *pmu, bool enable)
 49{
 50	if (pmu && pmu->func->pgob)
 51		pmu->func->pgob(pmu, enable);
 52}
 53
 54static void
 55nvkm_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
 61int
 62nvkm_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
 70static void
 71nvkm_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
 79static int
 80nvkm_pmu_fini(struct nvkm_subdev *subdev, enum nvkm_suspend_state 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
 93static int
 94nvkm_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
104static void *
105nvkm_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
117static const struct nvkm_subdev_func
118nvkm_pmu = {
119	.dtor = nvkm_pmu_dtor,
120	.init = nvkm_pmu_init,
121	.fini = nvkm_pmu_fini,
122	.intr = nvkm_pmu_intr,
123};
124
125int
126nvkm_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
159int
160nvkm_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}