/*
 * 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.
 */
#include "core.h"
#include "head.h"

#include <nvif/cl507d.h>
#include <nvif/push507c.h>
#include <nvif/timer.h>

#include <nvhw/class/cl507d.h>

#include "nouveau_bo.h"

int
core507d_update(struct nv50_core *core, u32 *interlock, bool ntfy)
{
        struct nvif_push *push = core->chan.push;
        int ret;

        if ((ret = PUSH_WAIT(push, 5)))
                return ret;

        if (ntfy) {
                PUSH_MTHD(push, NV507D, SET_NOTIFIER_CONTROL,
                          NVDEF(NV507D, SET_NOTIFIER_CONTROL, MODE, WRITE) |
                          NVVAL(NV507D, SET_NOTIFIER_CONTROL, OFFSET, NV50_DISP_CORE_NTFY >> 2) |
                          NVDEF(NV507D, SET_NOTIFIER_CONTROL, NOTIFY, ENABLE));
        }

        PUSH_MTHD(push, NV507D, UPDATE, interlock[NV50_DISP_INTERLOCK_BASE] |
                                        interlock[NV50_DISP_INTERLOCK_OVLY] |
                  NVDEF(NV507D, UPDATE, NOT_DRIVER_FRIENDLY, FALSE) |
                  NVDEF(NV507D, UPDATE, NOT_DRIVER_UNFRIENDLY, FALSE) |
                  NVDEF(NV507D, UPDATE, INHIBIT_INTERRUPTS, FALSE),

                                SET_NOTIFIER_CONTROL,
                  NVDEF(NV507D, SET_NOTIFIER_CONTROL, NOTIFY, DISABLE));

        return PUSH_KICK(push);
}

int
core507d_ntfy_wait_done(struct nouveau_bo *bo, u32 offset,
                        struct nvif_device *device)
{
        s64 time = nvif_msec(device, 2000ULL,
                if (NVBO_TD32(bo, offset, NV_DISP_CORE_NOTIFIER_1, COMPLETION_0, DONE, ==, TRUE))
                        break;
                usleep_range(1, 2);
        );
        return time < 0 ? time : 0;
}

void
core507d_ntfy_init(struct nouveau_bo *bo, u32 offset)
{
        NVBO_WR32(bo, offset, NV_DISP_CORE_NOTIFIER_1, COMPLETION_0,
                        NVDEF(NV_DISP_CORE_NOTIFIER_1, COMPLETION_0, DONE, FALSE));
}

int
core507d_read_caps(struct nv50_disp *disp)
{
        struct nvif_push *push = disp->core->chan.push;
        int ret;

        ret = PUSH_WAIT(push, 6);
        if (ret)
                return ret;

        PUSH_MTHD(push, NV507D, SET_NOTIFIER_CONTROL,
                  NVDEF(NV507D, SET_NOTIFIER_CONTROL, MODE, WRITE) |
                  NVVAL(NV507D, SET_NOTIFIER_CONTROL, OFFSET, NV50_DISP_CORE_NTFY >> 2) |
                  NVDEF(NV507D, SET_NOTIFIER_CONTROL, NOTIFY, ENABLE));

        PUSH_MTHD(push, NV507D, GET_CAPABILITIES, 0x00000000);

        PUSH_MTHD(push, NV507D, SET_NOTIFIER_CONTROL,
                  NVDEF(NV507D, SET_NOTIFIER_CONTROL, NOTIFY, DISABLE));

        return PUSH_KICK(push);
}

int
core507d_caps_init(struct nouveau_drm *drm, struct nv50_disp *disp)
{
        struct nv50_core *core = disp->core;
        struct nouveau_bo *bo = disp->sync;
        s64 time;
        int ret;

        NVBO_WR32(bo, NV50_DISP_CORE_NTFY, NV_DISP_CORE_NOTIFIER_1, CAPABILITIES_1,
                                     NVDEF(NV_DISP_CORE_NOTIFIER_1, CAPABILITIES_1, DONE, FALSE));

        ret = core507d_read_caps(disp);
        if (ret < 0)
                return ret;

        time = nvif_msec(core->chan.base.device, 2000ULL,
                         if (NVBO_TD32(bo, NV50_DISP_CORE_NTFY,
                                       NV_DISP_CORE_NOTIFIER_1, CAPABILITIES_1, DONE, ==, TRUE))
                                 break;
                         usleep_range(1, 2);
                         );
        if (time < 0)
                NV_ERROR(drm, "core caps notifier timeout\n");

        return 0;
}

int
core507d_init(struct nv50_core *core)
{
        struct nvif_push *push = core->chan.push;
        int ret;

        if ((ret = PUSH_WAIT(push, 2)))
                return ret;

        PUSH_MTHD(push, NV507D, SET_CONTEXT_DMA_NOTIFIER, core->chan.sync.handle);
        return PUSH_KICK(push);
}

static const struct nv50_core_func
core507d = {
        .init = core507d_init,
        .ntfy_init = core507d_ntfy_init,
        .caps_init = core507d_caps_init,
        .ntfy_wait_done = core507d_ntfy_wait_done,
        .update = core507d_update,
        .head = &head507d,
        .dac = &dac507d,
        .sor = &sor507d,
        .pior = &pior507d,
};

int
core507d_new_(const struct nv50_core_func *func, struct nouveau_drm *drm,
              s32 oclass, struct nv50_core **pcore)
{
        struct nv50_disp_core_channel_dma_v0 args = {};
        struct nv50_disp *disp = nv50_disp(drm->dev);
        struct nv50_core *core;
        int ret;

        if (!(core = *pcore = kzalloc(sizeof(*core), GFP_KERNEL)))
                return -ENOMEM;
        core->func = func;

        ret = nv50_dmac_create(&drm->client.device, &disp->disp->object,
                               &oclass, 0, &args, sizeof(args),
                               disp->sync->offset, &core->chan);
        if (ret) {
                NV_ERROR(drm, "core%04x allocation failed: %d\n", oclass, ret);
                return ret;
        }

        return 0;
}

int
core507d_new(struct nouveau_drm *drm, s32 oclass, struct nv50_core **pcore)
{
        return core507d_new_(&core507d, drm, oclass, pcore);
}