nv50_cursor.c

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/*
 * Copyright (C) 2008 Maarten Maathuis.
 * All Rights Reserved.
 *
 * 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 (including the
 * next paragraph) 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 OWNER(S) AND/OR ITS SUPPLIERS 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 <drm/drmP.h>

#include "nouveau_drm.h"
#include "nouveau_dma.h"
#include "nouveau_crtc.h"
#include "nv50_display.h"

static void
nv50_cursor_show(struct nouveau_crtc *nv_crtc, bool update)
{
    struct drm_device *dev = nv_crtc->base.dev;
    struct nouveau_drm *drm = nouveau_drm(dev);
    struct nouveau_channel *evo = nv50_display(dev)->master;
    int ret;

    NV_DEBUG(drm, "\n");

    if (update && nv_crtc->cursor.visible)
        return;

    ret = RING_SPACE(evo, (nv_device(drm->device)->chipset != 0x50 ? 5 : 3) + update * 2);
    if (ret) {
        NV_ERROR(drm, "no space while unhiding cursor\n");
        return;
    }

    if (nv_device(drm->device)->chipset != 0x50) {
        BEGIN_NV04(evo, 0, NV84_EVO_CRTC(nv_crtc->index, CURSOR_DMA), 1);
        OUT_RING(evo, NvEvoVRAM);
    }
    BEGIN_NV04(evo, 0, NV50_EVO_CRTC(nv_crtc->index, CURSOR_CTRL), 2);
    OUT_RING(evo, NV50_EVO_CRTC_CURSOR_CTRL_SHOW);
    OUT_RING(evo, nv_crtc->cursor.offset >> 8);

    if (update) {
        BEGIN_NV04(evo, 0, NV50_EVO_UPDATE, 1);
        OUT_RING(evo, 0);
        FIRE_RING(evo);
        nv_crtc->cursor.visible = true;
    }
}

static void
nv50_cursor_hide(struct nouveau_crtc *nv_crtc, bool update)
{
    struct drm_device *dev = nv_crtc->base.dev;
    struct nouveau_drm *drm = nouveau_drm(dev);
    struct nouveau_channel *evo = nv50_display(dev)->master;
    int ret;

    NV_DEBUG(drm, "\n");

    if (update && !nv_crtc->cursor.visible)
        return;

    ret = RING_SPACE(evo, (nv_device(drm->device)->chipset != 0x50 ? 5 : 3) + update * 2);
    if (ret) {
        NV_ERROR(drm, "no space while hiding cursor\n");
        return;
    }
    BEGIN_NV04(evo, 0, NV50_EVO_CRTC(nv_crtc->index, CURSOR_CTRL), 2);
    OUT_RING(evo, NV50_EVO_CRTC_CURSOR_CTRL_HIDE);
    OUT_RING(evo, 0);
    if (nv_device(drm->device)->chipset != 0x50) {
        BEGIN_NV04(evo, 0, NV84_EVO_CRTC(nv_crtc->index, CURSOR_DMA), 1);
        OUT_RING(evo, NV84_EVO_CRTC_CURSOR_DMA_HANDLE_NONE);
    }

    if (update) {
        BEGIN_NV04(evo, 0, NV50_EVO_UPDATE, 1);
        OUT_RING(evo, 0);
        FIRE_RING(evo);
        nv_crtc->cursor.visible = false;
    }
}

static void
nv50_cursor_set_pos(struct nouveau_crtc *nv_crtc, int x, int y)
{
    struct nouveau_device *device = nouveau_dev(nv_crtc->base.dev);

    nv_crtc->cursor_saved_x = x; nv_crtc->cursor_saved_y = y;
    nv_wr32(device, NV50_PDISPLAY_CURSOR_USER_POS(nv_crtc->index),
        ((y & 0xFFFF) << 16) | (x & 0xFFFF));
    /* Needed to make the cursor move. */
    nv_wr32(device, NV50_PDISPLAY_CURSOR_USER_POS_CTRL(nv_crtc->index), 0);
}

static void
nv50_cursor_set_offset(struct nouveau_crtc *nv_crtc, uint32_t offset)
{
    if (offset == nv_crtc->cursor.offset)
        return;

    nv_crtc->cursor.offset = offset;
    if (nv_crtc->cursor.visible) {
        nv_crtc->cursor.visible = false;
        nv_crtc->cursor.show(nv_crtc, true);
    }
}

int
nv50_cursor_init(struct nouveau_crtc *nv_crtc)
{
    nv_crtc->cursor.set_offset = nv50_cursor_set_offset;
    nv_crtc->cursor.set_pos = nv50_cursor_set_pos;
    nv_crtc->cursor.hide = nv50_cursor_hide;
    nv_crtc->cursor.show = nv50_cursor_show;
    return 0;
}