Quelle  gk104.c   Interaktion und
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/*
 * Copyright 2018 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Lyude Paul
 */
#include <core/device.h>

#include "priv.h"
#include "gk104.h"

void
gk104_clkgate_enable(struct nvkm_therm *base)
{
 struct gk104_therm *therm = gk104_therm(base);
 struct nvkm_device *dev = therm->base.subdev.device;
 const struct gk104_clkgate_engine_info *order = therm->clkgate_order;
 int i;

 /* Program ENG_MANT, ENG_FILTER */
 for (i = 0; order[i].type != NVKM_SUBDEV_NR; i++) {
  if (!nvkm_device_subdev(dev, order[i].type, order[i].inst))
   continue;

  nvkm_mask(dev, 0x20200 + order[i].offset, 0xff00, 0x4500);
 }

 /* magic */
 nvkm_wr32(dev, 0x020288, therm->idle_filter->fecs);
 nvkm_wr32(dev, 0x02028c, therm->idle_filter->hubmmu);

 /* Enable clockgating (ENG_CLK = RUN->AUTO) */
 for (i = 0; order[i].type != NVKM_SUBDEV_NR; i++) {
  if (!nvkm_device_subdev(dev, order[i].type, order[i].inst))
   continue;

  nvkm_mask(dev, 0x20200 + order[i].offset, 0x00ff, 0x0045);
 }
}

void
gk104_clkgate_fini(struct nvkm_therm *base, bool suspend)
{
 struct gk104_therm *therm = gk104_therm(base);
 struct nvkm_device *dev = therm->base.subdev.device;
 const struct gk104_clkgate_engine_info *order = therm->clkgate_order;
 int i;

 /* ENG_CLK = AUTO->RUN, ENG_PWR = RUN->AUTO */
 for (i = 0; order[i].type != NVKM_SUBDEV_NR; i++) {
  if (!nvkm_device_subdev(dev, order[i].type, order[i].inst))
   continue;

  nvkm_mask(dev, 0x20200 + order[i].offset, 0xff, 0x54);
 }
}

const struct gk104_clkgate_engine_info gk104_clkgate_engine_info[] = {
 { NVKM_ENGINE_GR,     0, 0x00 },
 { NVKM_ENGINE_MSPDEC, 0, 0x04 },
 { NVKM_ENGINE_MSPPP,  0, 0x08 },
 { NVKM_ENGINE_MSVLD,  0, 0x0c },
 { NVKM_ENGINE_CE,     0, 0x10 },
 { NVKM_ENGINE_CE,     1, 0x14 },
 { NVKM_ENGINE_MSENC,  0, 0x18 },
 { NVKM_ENGINE_CE,     2, 0x1c },
 { NVKM_SUBDEV_NR },
};

const struct gf100_idle_filter gk104_idle_filter = {
 .fecs = 0x00001000,
 .hubmmu = 0x00001000,
};

static const struct nvkm_therm_func
gk104_therm_func = {
 .init = gf119_therm_init,
 .fini = g84_therm_fini,
 .pwm_ctrl = gf119_fan_pwm_ctrl,
 .pwm_get = gf119_fan_pwm_get,
 .pwm_set = gf119_fan_pwm_set,
 .pwm_clock = gf119_fan_pwm_clock,
 .temp_get = g84_temp_get,
 .fan_sense = gt215_therm_fan_sense,
 .program_alarms = nvkm_therm_program_alarms_polling,
 .clkgate_init = gf100_clkgate_init,
 .clkgate_enable = gk104_clkgate_enable,
 .clkgate_fini = gk104_clkgate_fini,
};

static int
gk104_therm_new_(const struct nvkm_therm_func *func, struct nvkm_device *device,
   enum nvkm_subdev_type type, int inst,
   const struct gk104_clkgate_engine_info *clkgate_order,
   const struct gf100_idle_filter *idle_filter,
   struct nvkm_therm **ptherm)
{
 struct gk104_therm *therm = kzalloc(sizeof(*therm), GFP_KERNEL);

 if (!therm)
  return -ENOMEM;

 nvkm_therm_ctor(&therm->base, device, type, inst, func);
 *ptherm = &therm->base;
 therm->clkgate_order = clkgate_order;
 therm->idle_filter = idle_filter;
 return 0;
}

int
gk104_therm_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_therm **ptherm)
{
 return gk104_therm_new_(&gk104_therm_func, device, type, inst,
    gk104_clkgate_engine_info, &gk104_idle_filter,
    ptherm);
}