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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.
*
*/
#ifndef __NOUVEAU_DMA_H__
#define __NOUVEAU_DMA_H__
#ifndef NOUVEAU_DMA_DEBUG
#define NOUVEAU_DMA_DEBUG 0
#endif
/*
* 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)
#if 0
/* Hardcoded object assignments to subchannels (subchannel id). */
enum {
NvSubM2MF = 0,
NvSubSw = 1,
NvSub2D = 2,
NvSubCtxSurf2D = 2,
NvSubGdiRect = 3,
NvSubImageBlit = 4
};
#endif
/* Object handles. */
enum {
#if 0
NvM2MF = 0x80000001,
NvDmaFB = 0x80000002,
NvDmaTT = 0x80000003,
NvDmaVRAM = 0x80000004,
NvDmaGART = 0x80000005,
NvNotify0 = 0x80000006,
Nv2D = 0x80000007,
NvCtxSurf2D = 0x80000008,
NvRop = 0x80000009,
NvImagePatt = 0x8000000a,
NvClipRect = 0x8000000b,
NvGdiRect = 0x8000000c,
NvImageBlit = 0x8000000d,
NvSw = 0x8000000e,
NvSema = 0x8000000f,
#endif
/* G80+ display objects */
NvEvoVRAM = 0x01000000,
NvEvoFB16 = 0x01000001,
NvEvoFB32 = 0x01000002,
NvEvoFE = 0x01000003,
NvEvoSync = 0xcafe0000,
};
#if 0
#define NV_MEMORY_TO_MEMORY_FORMAT 0x00000039
#define NV_MEMORY_TO_MEMORY_FORMAT_NAME 0x00000000
#define NV_MEMORY_TO_MEMORY_FORMAT_SET_REF 0x00000050
#define NV_MEMORY_TO_MEMORY_FORMAT_NOP 0x00000100
#define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY 0x00000104
#define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE 0x00000000
#define NV_MEMORY_TO_MEMORY_FORMAT_NOTIFY_STYLE_WRITE_LE_AWAKEN 0x00000001
#define NV_MEMORY_TO_MEMORY_FORMAT_DMA_NOTIFY 0x00000180
#define NV_MEMORY_TO_MEMORY_FORMAT_DMA_SOURCE 0x00000184
#define NV_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN 0x0000030c
#define NV50_MEMORY_TO_MEMORY_FORMAT 0x00005039
#define NV50_MEMORY_TO_MEMORY_FORMAT_UNK200 0x00000200
#define NV50_MEMORY_TO_MEMORY_FORMAT_UNK21C 0x0000021c
#define NV50_MEMORY_TO_MEMORY_FORMAT_OFFSET_IN_HIGH 0x00000238
#define NV50_MEMORY_TO_MEMORY_FORMAT_OFFSET_OUT_HIGH 0x0000023c
#endif
#if 0
extern void nouveau_dma_pre_init(struct nouveau_channel *);
extern int nouveau_dma_init(struct nouveau_channel *);
#endif
extern int nouveau_dma_wait(struct nouveau_channel *, int slots, int size);
static __must_check inline int
RING_SPACE(struct nouveau_channel *chan, int size)
{
int ret;
ret = nouveau_dma_wait(chan, 1, size);
if (ret)
return ret;
chan->dma.free -= size;
return 0;
}
static inline void
OUT_RING(struct nouveau_channel *chan, int data)
{
if (NOUVEAU_DMA_DEBUG) {
NV_INFO(chan->dev, "Ch%d/0x%08x: 0x%08x\n",
chan->id, chan->dma.cur << 2, data);
}
nv_wv32(chan->pushbuf, 4 * chan->dma.cur++, data);
}
extern void
OUT_RINGp(struct nouveau_channel *chan, const void *data, unsigned nr_dwords);
static inline void
BEGIN_RING(struct nouveau_channel *chan, int subc, int mthd, int size)
{
OUT_RING(chan, (subc << 13) | (size << 18) | mthd);
}
#define WRITE_PUT(val) do { \
DRM_MEMORYBARRIER(); \
nv_rv32(chan->pushbuf, 0); \
nv_wr32(chan->dev, chan->user_put, ((val) << 2) + chan->pushbuf_base); \
} while (0)
static inline void
FIRE_RING(struct nouveau_channel *chan)
{
if (chan->dma.cur == chan->dma.put)
return;
WRITE_PUT(chan->dma.cur);
chan->dma.put = chan->dma.cur;
}
static inline void
WIND_RING(struct nouveau_channel *chan)
{
chan->dma.cur = chan->dma.put;
}
#endif
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