nv50.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 <subdev/bar.h>

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

struct nv50_disp_priv {
    struct nouveau_disp base;
};

static struct nouveau_oclass
nv50_disp_sclass[] = {
    {},
};

static void
nv50_disp_intr_vblank(struct nv50_disp_priv *priv, int crtc)
{
    struct nouveau_bar *bar = nouveau_bar(priv);
    struct nouveau_disp *disp = &priv->base;
    struct nouveau_software_chan *chan, *temp;
    unsigned long flags;

    spin_lock_irqsave(&disp->vblank.lock, flags);
    list_for_each_entry_safe(chan, temp, &disp->vblank.list, vblank.head) {
        if (chan->vblank.crtc != crtc)
            continue;

        if (nv_device(priv)->chipset >= 0xc0) {
            nv_wr32(priv, 0x001718, 0x80000000 | chan->vblank.channel);
            bar->flush(bar);
            nv_wr32(priv, 0x06000c,
                upper_32_bits(chan->vblank.offset));
            nv_wr32(priv, 0x060010,
                lower_32_bits(chan->vblank.offset));
            nv_wr32(priv, 0x060014, chan->vblank.value);
        } else {
            nv_wr32(priv, 0x001704, chan->vblank.channel);
            nv_wr32(priv, 0x001710, 0x80000000 | chan->vblank.ctxdma);
            bar->flush(bar);
            if (nv_device(priv)->chipset == 0x50) {
                nv_wr32(priv, 0x001570, chan->vblank.offset);
                nv_wr32(priv, 0x001574, chan->vblank.value);
            } else {
                nv_wr32(priv, 0x060010, chan->vblank.offset);
                nv_wr32(priv, 0x060014, chan->vblank.value);
            }
        }

        list_del(&chan->vblank.head);
        if (disp->vblank.put)
            disp->vblank.put(disp->vblank.data, crtc);
    }
    spin_unlock_irqrestore(&disp->vblank.lock, flags);

    if (disp->vblank.notify)
        disp->vblank.notify(disp->vblank.data, crtc);
}

static void
nv50_disp_intr(struct nouveau_subdev *subdev)
{
    struct nv50_disp_priv *priv = (void *)subdev;
    u32 stat1 = nv_rd32(priv, 0x610024);

    if (stat1 & 0x00000004) {
        nv50_disp_intr_vblank(priv, 0);
        nv_wr32(priv, 0x610024, 0x00000004);
        stat1 &= ~0x00000004;
    }

    if (stat1 & 0x00000008) {
        nv50_disp_intr_vblank(priv, 1);
        nv_wr32(priv, 0x610024, 0x00000008);
        stat1 &= ~0x00000008;
    }

}

static int
nv50_disp_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
          struct nouveau_oclass *oclass, void *data, u32 size,
          struct nouveau_object **pobject)
{
    struct nv50_disp_priv *priv;
    int ret;

    ret = nouveau_disp_create(parent, engine, oclass, "PDISP",
                  "display", &priv);
    *pobject = nv_object(priv);
    if (ret)
        return ret;

    nv_engine(priv)->sclass = nv50_disp_sclass;
    nv_subdev(priv)->intr = nv50_disp_intr;

    INIT_LIST_HEAD(&priv->base.vblank.list);
    spin_lock_init(&priv->base.vblank.lock);
    return 0;
}

struct nouveau_oclass
nv50_disp_oclass = {
    .handle = NV_ENGINE(DISP, 0x50),
    .ofuncs = &(struct nouveau_ofuncs) {
        .ctor = nv50_disp_ctor,
        .dtor = _nouveau_disp_dtor,
        .init = _nouveau_disp_init,
        .fini = _nouveau_disp_fini,
    },
};