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/*
* 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.
*
*/
#include "drmP.h"
#include "drm.h"
#include "nouveau_drv.h"
#define RAMFC_WR(offset,val) INSTANCE_WR(chan->ramfc->gpuobj, \
NV04_RAMFC_##offset/4, (val))
#define RAMFC_RD(offset) INSTANCE_RD(chan->ramfc->gpuobj, \
NV04_RAMFC_##offset/4)
#define NV04_RAMFC(c) (dev_priv->ramfc_offset + ((c) * NV04_RAMFC__SIZE))
#define NV04_RAMFC__SIZE 32
int
nv04_fifo_create_context(struct nouveau_channel *chan)
{
struct drm_device *dev = chan->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
int ret;
if ((ret = nouveau_gpuobj_new_fake(dev, NV04_RAMFC(chan->id),
NV04_RAMFC__SIZE,
NVOBJ_FLAG_ZERO_ALLOC |
NVOBJ_FLAG_ZERO_FREE,
NULL, &chan->ramfc)))
return ret;
/* Setup initial state */
RAMFC_WR(DMA_PUT, chan->pushbuf_base);
RAMFC_WR(DMA_GET, chan->pushbuf_base);
RAMFC_WR(DMA_INSTANCE, chan->pushbuf->instance >> 4);
RAMFC_WR(DMA_FETCH, (NV_PFIFO_CACHE1_DMA_FETCH_TRIG_128_BYTES |
NV_PFIFO_CACHE1_DMA_FETCH_SIZE_128_BYTES |
NV_PFIFO_CACHE1_DMA_FETCH_MAX_REQS_8 |
#ifdef __BIG_ENDIAN
NV_PFIFO_CACHE1_BIG_ENDIAN |
#endif
0));
/* enable the fifo dma operation */
NV_WRITE(NV04_PFIFO_MODE,NV_READ(NV04_PFIFO_MODE) | (1<<chan->id));
return 0;
}
void
nv04_fifo_destroy_context(struct nouveau_channel *chan)
{
struct drm_device *dev = chan->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
NV_WRITE(NV04_PFIFO_MODE, NV_READ(NV04_PFIFO_MODE)&~(1<<chan->id));
nouveau_gpuobj_ref_del(dev, &chan->ramfc);
}
int
nv04_fifo_load_context(struct nouveau_channel *chan)
{
struct drm_device *dev = chan->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
uint32_t tmp;
NV_WRITE(NV03_PFIFO_CACHE1_PUSH1, (1<<8) | chan->id);
NV_WRITE(NV04_PFIFO_CACHE1_DMA_GET, RAMFC_RD(DMA_GET));
NV_WRITE(NV04_PFIFO_CACHE1_DMA_PUT, RAMFC_RD(DMA_PUT));
tmp = RAMFC_RD(DMA_INSTANCE);
NV_WRITE(NV04_PFIFO_CACHE1_DMA_INSTANCE, tmp & 0xFFFF);
NV_WRITE(NV04_PFIFO_CACHE1_DMA_DCOUNT, tmp >> 16);
NV_WRITE(NV04_PFIFO_CACHE1_DMA_STATE, RAMFC_RD(DMA_STATE));
NV_WRITE(NV04_PFIFO_CACHE1_DMA_FETCH, RAMFC_RD(DMA_FETCH));
NV_WRITE(NV04_PFIFO_CACHE1_ENGINE, RAMFC_RD(ENGINE));
NV_WRITE(NV04_PFIFO_CACHE1_PULL1, RAMFC_RD(PULL1_ENGINE));
/* Reset NV04_PFIFO_CACHE1_DMA_CTL_AT_INFO to INVALID */
tmp = NV_READ(NV04_PFIFO_CACHE1_DMA_CTL) & ~(1<<31);
NV_WRITE(NV04_PFIFO_CACHE1_DMA_CTL, tmp);
return 0;
}
int
nv04_fifo_save_context(struct nouveau_channel *chan)
{
struct drm_device *dev = chan->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
uint32_t tmp;
RAMFC_WR(DMA_PUT, NV04_PFIFO_CACHE1_DMA_PUT);
RAMFC_WR(DMA_GET, NV04_PFIFO_CACHE1_DMA_GET);
tmp = NV_READ(NV04_PFIFO_CACHE1_DMA_DCOUNT) << 16;
tmp |= NV_READ(NV04_PFIFO_CACHE1_DMA_INSTANCE);
RAMFC_WR(DMA_INSTANCE, tmp);
RAMFC_WR(DMA_STATE, NV_READ(NV04_PFIFO_CACHE1_DMA_STATE));
RAMFC_WR(DMA_FETCH, NV_READ(NV04_PFIFO_CACHE1_DMA_FETCH));
RAMFC_WR(ENGINE, NV_READ(NV04_PFIFO_CACHE1_ENGINE));
RAMFC_WR(PULL1_ENGINE, NV_READ(NV04_PFIFO_CACHE1_PULL1));
return 0;
}
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