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drm/shared-core/nv40_fifo.c

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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 "nouveau_drv.h"
#include "nouveau_drm.h"
#define RAMFC_WR(offset,val) INSTANCE_WR(chan->ramfc->gpuobj, \
NV40_RAMFC_##offset/4, (val))
#define RAMFC_RD(offset) INSTANCE_RD(chan->ramfc->gpuobj, \
NV40_RAMFC_##offset/4)
#define NV40_RAMFC(c) (dev_priv->ramfc_offset + ((c)*NV40_RAMFC__SIZE))
#define NV40_RAMFC__SIZE 128
int
nv40_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, NV40_RAMFC(chan->id),
NV40_RAMFC__SIZE,
NVOBJ_FLAG_ZERO_ALLOC |
NVOBJ_FLAG_ZERO_FREE,
NULL, &chan->ramfc)))
return ret;
/* Fill entries that are seen filled in dumps of nvidia driver just
* after channel's is put into DMA mode
*/
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
0x30000000 /* no idea.. */);
RAMFC_WR(DMA_SUBROUTINE, 0);
RAMFC_WR(GRCTX_INSTANCE, chan->ramin_grctx->instance >> 4);
RAMFC_WR(DMA_TIMESLICE , 0x0001FFFF);
/* enable the fifo dma operation */
NV_WRITE(NV04_PFIFO_MODE,NV_READ(NV04_PFIFO_MODE)|(1<<chan->id));
return 0;
}
void
nv40_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));
if (chan->ramfc)
nouveau_gpuobj_ref_del(dev, &chan->ramfc);
}
int
nv40_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, tmp2;
NV_WRITE(NV04_PFIFO_CACHE1_DMA_GET , RAMFC_RD(DMA_GET));
NV_WRITE(NV04_PFIFO_CACHE1_DMA_PUT , RAMFC_RD(DMA_PUT));
NV_WRITE(NV10_PFIFO_CACHE1_REF_CNT , RAMFC_RD(REF_CNT));
NV_WRITE(NV04_PFIFO_CACHE1_DMA_INSTANCE , RAMFC_RD(DMA_INSTANCE));
NV_WRITE(NV04_PFIFO_CACHE1_DMA_DCOUNT , RAMFC_RD(DMA_DCOUNT));
NV_WRITE(NV04_PFIFO_CACHE1_DMA_STATE , RAMFC_RD(DMA_STATE));
/* No idea what 0x2058 is.. */
tmp = RAMFC_RD(DMA_FETCH);
tmp2 = NV_READ(0x2058) & 0xFFF;
tmp2 |= (tmp & 0x30000000);
NV_WRITE(0x2058, tmp2);
tmp &= ~0x30000000;
NV_WRITE(NV04_PFIFO_CACHE1_DMA_FETCH , tmp);
NV_WRITE(NV04_PFIFO_CACHE1_ENGINE , RAMFC_RD(ENGINE));
NV_WRITE(NV04_PFIFO_CACHE1_PULL1 , RAMFC_RD(PULL1_ENGINE));
NV_WRITE(NV10_PFIFO_CACHE1_ACQUIRE_VALUE , RAMFC_RD(ACQUIRE_VALUE));
NV_WRITE(NV10_PFIFO_CACHE1_ACQUIRE_TIMESTAMP, RAMFC_RD(ACQUIRE_TIMESTAMP));
NV_WRITE(NV10_PFIFO_CACHE1_ACQUIRE_TIMEOUT , RAMFC_RD(ACQUIRE_TIMEOUT));
NV_WRITE(NV10_PFIFO_CACHE1_SEMAPHORE , RAMFC_RD(SEMAPHORE));
NV_WRITE(NV10_PFIFO_CACHE1_DMA_SUBROUTINE , RAMFC_RD(DMA_SUBROUTINE));
NV_WRITE(NV40_PFIFO_GRCTX_INSTANCE , RAMFC_RD(GRCTX_INSTANCE));
NV_WRITE(0x32e4, RAMFC_RD(UNK_40));
/* NVIDIA does this next line twice... */
NV_WRITE(0x32e8, RAMFC_RD(UNK_44));
NV_WRITE(0x2088, RAMFC_RD(UNK_4C));
NV_WRITE(0x3300, RAMFC_RD(UNK_50));
/* not sure what part is PUT, and which is GET.. never seen a non-zero
* value appear in a mmio-trace yet..
*/
#if 0
tmp = NV_READ(UNK_84);
NV_WRITE(NV_PFIFO_CACHE1_GET, tmp ???);
NV_WRITE(NV_PFIFO_CACHE1_PUT, tmp ???);
#endif
/* Don't clobber the TIMEOUT_ENABLED flag when restoring from RAMFC */
tmp = NV_READ(NV04_PFIFO_DMA_TIMESLICE) & ~0x1FFFF;
tmp |= RAMFC_RD(DMA_TIMESLICE) & 0x1FFFF;
NV_WRITE(NV04_PFIFO_DMA_TIMESLICE, tmp);
/* Set channel active, and in DMA mode */
NV_WRITE(NV03_PFIFO_CACHE1_PUSH1 , 0x00010000 | chan->id);
/* Reset 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
nv40_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 , NV_READ(NV04_PFIFO_CACHE1_DMA_PUT));
RAMFC_WR(DMA_GET , NV_READ(NV04_PFIFO_CACHE1_DMA_GET));
RAMFC_WR(REF_CNT , NV_READ(NV10_PFIFO_CACHE1_REF_CNT));
RAMFC_WR(DMA_INSTANCE , NV_READ(NV04_PFIFO_CACHE1_DMA_INSTANCE));
RAMFC_WR(DMA_DCOUNT , NV_READ(NV04_PFIFO_CACHE1_DMA_DCOUNT));
RAMFC_WR(DMA_STATE , NV_READ(NV04_PFIFO_CACHE1_DMA_STATE));
tmp = NV_READ(NV04_PFIFO_CACHE1_DMA_FETCH);
tmp |= NV_READ(0x2058) & 0x30000000;
RAMFC_WR(DMA_FETCH , tmp);
RAMFC_WR(ENGINE , NV_READ(NV04_PFIFO_CACHE1_ENGINE));
RAMFC_WR(PULL1_ENGINE , NV_READ(NV04_PFIFO_CACHE1_PULL1));
RAMFC_WR(ACQUIRE_VALUE , NV_READ(NV10_PFIFO_CACHE1_ACQUIRE_VALUE));
tmp = NV_READ(NV10_PFIFO_CACHE1_ACQUIRE_TIMESTAMP);
RAMFC_WR(ACQUIRE_TIMESTAMP, tmp);
RAMFC_WR(ACQUIRE_TIMEOUT , NV_READ(NV10_PFIFO_CACHE1_ACQUIRE_TIMEOUT));
RAMFC_WR(SEMAPHORE , NV_READ(NV10_PFIFO_CACHE1_SEMAPHORE));
/* NVIDIA read 0x3228 first, then write DMA_GET here.. maybe something
* more involved depending on the value of 0x3228?
*/
RAMFC_WR(DMA_SUBROUTINE , NV_READ(NV04_PFIFO_CACHE1_DMA_GET));
RAMFC_WR(GRCTX_INSTANCE , NV_READ(NV40_PFIFO_GRCTX_INSTANCE));
/* No idea what the below is for exactly, ripped from a mmio-trace */
RAMFC_WR(UNK_40 , NV_READ(NV40_PFIFO_UNK32E4));
/* NVIDIA do this next line twice.. bug? */
RAMFC_WR(UNK_44 , NV_READ(0x32e8));
RAMFC_WR(UNK_4C , NV_READ(0x2088));
RAMFC_WR(UNK_50 , NV_READ(0x3300));
#if 0 /* no real idea which is PUT/GET in UNK_48.. */
tmp = NV_READ(NV04_PFIFO_CACHE1_GET);
tmp |= (NV_READ(NV04_PFIFO_CACHE1_PUT) << 16);
RAMFC_WR(UNK_48 , tmp);
#endif
return 0;
}
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