/*
 * Copyright 2012 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: Ben Skeggs
 */
#include "priv.h"

#include <core/option.h>
#include <subdev/top.h>

void
nvkm_mc_unk260(struct nvkm_device *device, u32 data)
{
        struct nvkm_mc *mc = device->mc;
        if (likely(mc) && mc->func->unk260)
                mc->func->unk260(mc, data);
}

void
nvkm_mc_intr_mask(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, bool en)
{
        struct nvkm_subdev *subdev = nvkm_device_subdev(device, type, inst);

        if (subdev) {
                if (en)
                        nvkm_intr_allow(subdev, NVKM_INTR_SUBDEV);
                else
                        nvkm_intr_block(subdev, NVKM_INTR_SUBDEV);
        }
}

static u32
nvkm_mc_reset_mask(struct nvkm_device *device, bool isauto, enum nvkm_subdev_type type, int inst)
{
        struct nvkm_mc *mc = device->mc;
        const struct nvkm_mc_map *map;
        u64 pmc_enable = 0;
        if (likely(mc)) {
                if (!(pmc_enable = nvkm_top_reset(device, type, inst))) {
                        for (map = mc->func->reset; map && map->stat; map++) {
                                if (!isauto || !map->noauto) {
                                        if (map->type == type && map->inst == inst) {
                                                pmc_enable = map->stat;
                                                break;
                                        }
                                }
                        }
                }
        }
        return pmc_enable;
}

void
nvkm_mc_reset(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
{
        u64 pmc_enable = nvkm_mc_reset_mask(device, true, type, inst);
        if (pmc_enable) {
                device->mc->func->device->disable(device->mc, pmc_enable);
                device->mc->func->device->enable(device->mc, pmc_enable);
        }
}

void
nvkm_mc_disable(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
{
        u64 pmc_enable = nvkm_mc_reset_mask(device, false, type, inst);
        if (pmc_enable)
                device->mc->func->device->disable(device->mc, pmc_enable);
}

void
nvkm_mc_enable(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
{
        u64 pmc_enable = nvkm_mc_reset_mask(device, false, type, inst);
        if (pmc_enable)
                device->mc->func->device->enable(device->mc, pmc_enable);
}

bool
nvkm_mc_enabled(struct nvkm_device *device, enum nvkm_subdev_type type, int inst)
{
        u64 pmc_enable = nvkm_mc_reset_mask(device, false, type, inst);

        return (pmc_enable != 0) && device->mc->func->device->enabled(device->mc, pmc_enable);
}

static int
nvkm_mc_init(struct nvkm_subdev *subdev)
{
        struct nvkm_mc *mc = nvkm_mc(subdev);
        if (mc->func->init)
                mc->func->init(mc);
        return 0;
}

static void *
nvkm_mc_dtor(struct nvkm_subdev *subdev)
{
        return nvkm_mc(subdev);
}

static const struct nvkm_subdev_func
nvkm_mc = {
        .dtor = nvkm_mc_dtor,
        .init = nvkm_mc_init,
};

int
nvkm_mc_new_(const struct nvkm_mc_func *func, struct nvkm_device *device,
             enum nvkm_subdev_type type, int inst, struct nvkm_mc **pmc)
{
        struct nvkm_mc *mc;
        int ret;

        if (!(mc = *pmc = kzalloc_obj(*mc)))
                return -ENOMEM;

        nvkm_subdev_ctor(&nvkm_mc, device, type, inst, &mc->subdev);
        mc->func = func;

        if (mc->func->intr) {
                ret = nvkm_intr_add(mc->func->intr, mc->func->intrs, &mc->subdev,
                                    mc->func->intr_nonstall ? 2 : 1, &mc->intr);
                if (ret)
                        return ret;
        }

        return 0;
}