linux-imx

/*

 * Copyright (C) 2007 Ben Skeggs.

 * 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.

 *

 */

​

#ifndef __NOUVEAU_DMA_H__

#define __NOUVEAU_DMA_H__

​

#include "nouveau_bo.h"

#include "nouveau_chan.h"

​

int nouveau_dma_wait(struct nouveau_channel *, int slots, int size);

void nv50_dma_push(struct nouveau_channel *, u64 addr, int length);

​

/*

 * There's a hw race condition where you can't jump to your PUT offset,

 * to avoid this we jump to offset + SKIPS and fill the difference with

 * NOPs.

 *

 * xf86-video-nv configures the DMA fetch size to 32 bytes, and uses

 * a SKIPS value of 8.  Lets assume that the race condition is to do

 * with writing into the fetch area, we configure a fetch size of 128

 * bytes so we need a larger SKIPS value.

 */

#define NOUVEAU_DMA_SKIPS (128 / 4)

​

/* Hardcoded object assignments to subchannels (subchannel id). */

enum {

    NvSubCtxSurf2D  = 0,

    NvSubSw     = 1,

    NvSubImageBlit  = 2,

    NvSubGdiRect    = 3,

​

    NvSub2D     = 3, /* DO NOT CHANGE - hardcoded for kepler gr fifo */

    NvSubCopy   = 4, /* DO NOT CHANGE - hardcoded for kepler gr fifo */

};

​

/* Object handles - for stuff that's doesn't use handle == oclass. */

enum {

    NvDmaFB     = 0x80000002,

    NvDmaTT     = 0x80000003,

    NvNotify0       = 0x80000006,