asdk-libdrm

/*

 * Copyright 2007 Nouveau Project

 *

 * 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 AUTHORS 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 <stdio.h>

#include <stdlib.h>

#include <errno.h>

#include <assert.h>

​

#include "nouveau_private.h"

​

#define PB_BUFMGR_DWORDS   (4096 / 2)

#define PB_MIN_USER_DWORDS  2048

​

static int

nouveau_pushbuf_space(struct nouveau_channel *chan, unsigned min)

{

    struct nouveau_channel_priv *nvchan = nouveau_channel(chan);

    struct nouveau_pushbuf_priv *nvpb = &nvchan->pb;

    struct nouveau_bo *bo;

    int ret;

​

    if (min < PB_MIN_USER_DWORDS)

        min = PB_MIN_USER_DWORDS;

​

    nvpb->current_offset = chan->cur - nvpb->pushbuf;

    if (chan->cur + min + 2 <= chan->end)

        return 0;

​

    nvpb->current++;

    if (nvpb->current == CALPB_BUFFERS)

        nvpb->current = 0;

    bo = nvpb->buffer[nvpb->current];

​

    ret = nouveau_bo_map(bo, NOUVEAU_BO_WR);

    if (ret)

        return ret;

​

    nvpb->size = (bo->size - 8) / 4;

    nvpb->pushbuf = bo->map;

    nvpb->current_offset = 0;

​

    chan->cur = nvpb->pushbuf;

    chan->end = nvpb->pushbuf + nvpb->size;

​

    nouveau_bo_unmap(bo);

    return 0;

}

​

static void

nouveau_pushbuf_fini_call(struct nouveau_channel *chan)

{

    struct nouveau_channel_priv *nvchan = nouveau_channel(chan);

    struct nouveau_pushbuf_priv *nvpb = &nvchan->pb;

    int i;

​

    for (i = 0; i < CALPB_BUFFERS; i++)

        nouveau_bo_ref(NULL, &nvpb->buffer[i]);

    nvpb->pushbuf = NULL;

}

​

static int

nouveau_pushbuf_init_call(struct nouveau_channel *chan, int buf_size)

{

    struct drm_nouveau_gem_pushbuf req;

    struct nouveau_channel_priv *nvchan = nouveau_channel(chan);

    struct nouveau_pushbuf_priv *nvpb = &nvchan->pb;

    struct nouveau_device *dev = chan->device;

    uint32_t flags = 0;

    int i, ret;

​

    if (nvchan->drm.pushbuf_domains & NOUVEAU_GEM_DOMAIN_GART)

        flags |= NOUVEAU_BO_GART;

    else