nvc0.c

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/*
 * 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 <core/os.h>
#include <core/class.h>
#include <core/engctx.h>

#include <engine/software.h>
#include <engine/disp.h>

struct nvc0_software_priv {
    struct nouveau_software base;
};

struct nvc0_software_chan {
    struct nouveau_software_chan base;
};

/*******************************************************************************
 * software object classes
 ******************************************************************************/

static int
nvc0_software_mthd_vblsem_offset(struct nouveau_object *object, u32 mthd,
                 void *args, u32 size)
{
    struct nvc0_software_chan *chan = (void *)nv_engctx(object->parent);
    u64 data = *(u32 *)args;
    if (mthd == 0x0400) {
        chan->base.vblank.offset &= 0x00ffffffffULL;
        chan->base.vblank.offset |= data << 32;
    } else {
        chan->base.vblank.offset &= 0xff00000000ULL;
        chan->base.vblank.offset |= data;
    }
    return 0;
}

static int
nvc0_software_mthd_vblsem_value(struct nouveau_object *object, u32 mthd,
                void *args, u32 size)
{
    struct nvc0_software_chan *chan = (void *)nv_engctx(object->parent);
    chan->base.vblank.value = *(u32 *)args;
    return 0;
}

static int
nvc0_software_mthd_vblsem_release(struct nouveau_object *object, u32 mthd,
                  void *args, u32 size)
{
    struct nvc0_software_chan *chan = (void *)nv_engctx(object->parent);
    struct nouveau_disp *disp = nouveau_disp(object);
    unsigned long flags;
    u32 crtc = *(u32 *)args;

    if ((nv_device(object)->card_type < NV_E0 && crtc > 1) || crtc > 3)
        return -EINVAL;

    disp->vblank.get(disp->vblank.data, crtc);

    spin_lock_irqsave(&disp->vblank.lock, flags);
    list_add(&chan->base.vblank.head, &disp->vblank.list);
    chan->base.vblank.crtc = crtc;
    spin_unlock_irqrestore(&disp->vblank.lock, flags);
    return 0;
}

static int
nvc0_software_mthd_flip(struct nouveau_object *object, u32 mthd,
            void *args, u32 size)
{
    struct nvc0_software_chan *chan = (void *)nv_engctx(object->parent);
    if (chan->base.flip)
        return chan->base.flip(chan->base.flip_data);
    return -EINVAL;
}

static struct nouveau_omthds
nvc0_software_omthds[] = {
    { 0x0400, nvc0_software_mthd_vblsem_offset },
    { 0x0404, nvc0_software_mthd_vblsem_offset },
    { 0x0408, nvc0_software_mthd_vblsem_value },
    { 0x040c, nvc0_software_mthd_vblsem_release },
    { 0x0500, nvc0_software_mthd_flip },
    {}
};

static struct nouveau_oclass
nvc0_software_sclass[] = {
    { 0x906e, &nouveau_object_ofuncs, nvc0_software_omthds },
    {}
};

/*******************************************************************************
 * software context
 ******************************************************************************/

static int
nvc0_software_context_ctor(struct nouveau_object *parent,
               struct nouveau_object *engine,
               struct nouveau_oclass *oclass, void *data, u32 size,
               struct nouveau_object **pobject)
{
    struct nvc0_software_chan *chan;
    int ret;

    ret = nouveau_software_context_create(parent, engine, oclass, &chan);
    *pobject = nv_object(chan);
    if (ret)
        return ret;

    chan->base.vblank.channel = nv_gpuobj(parent->parent)->addr >> 12;
    return 0;
}

static struct nouveau_oclass
nvc0_software_cclass = {
    .handle = NV_ENGCTX(SW, 0xc0),
    .ofuncs = &(struct nouveau_ofuncs) {
        .ctor = nvc0_software_context_ctor,
        .dtor = _nouveau_software_context_dtor,
        .init = _nouveau_software_context_init,
        .fini = _nouveau_software_context_fini,
    },
};

/*******************************************************************************
 * software engine/subdev functions
 ******************************************************************************/

static int
nvc0_software_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
           struct nouveau_oclass *oclass, void *data, u32 size,
           struct nouveau_object **pobject)
{
    struct nvc0_software_priv *priv;
    int ret;

    ret = nouveau_software_create(parent, engine, oclass, &priv);
    *pobject = nv_object(priv);
    if (ret)
        return ret;

    nv_engine(priv)->cclass = &nvc0_software_cclass;
    nv_engine(priv)->sclass = nvc0_software_sclass;
    nv_subdev(priv)->intr = nv04_software_intr;
    return 0;
}

struct nouveau_oclass
nvc0_software_oclass = {
    .handle = NV_ENGINE(SW, 0xc0),
    .ofuncs = &(struct nouveau_ofuncs) {
        .ctor = nvc0_software_ctor,
        .dtor = _nouveau_software_dtor,
        .init = _nouveau_software_init,
        .fini = _nouveau_software_fini,
    },
};