155 lines
4.6 KiB
C
155 lines
4.6 KiB
C
/*
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* Copyright 2007 Nouveau Project
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef __NOUVEAU_DMA_H__
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#define __NOUVEAU_DMA_H__
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#include <string.h>
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#include "nouveau_private.h"
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//#define NOUVEAU_DMA_DEBUG
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//#define NOUVEAU_DMA_TRACE
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//#define NOUVEAU_DMA_DUMP_POSTRELOC_PUSHBUF
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#if defined(__amd64__)
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#define NOUVEAU_DMA_BARRIER asm volatile("lock; addl $0,0(%%rsp)" ::: "memory")
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#elif defined(__i386__)
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#define NOUVEAU_DMA_BARRIER asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
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#else
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#define NOUVEAU_DMA_BARRIER
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#endif
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#define NOUVEAU_DMA_TIMEOUT 2000
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#define NOUVEAU_TIME_MSEC() 0
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#define RING_SKIPS 8
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extern int nouveau_dma_wait(struct nouveau_channel *chan, unsigned size);
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extern void nouveau_dma_subc_bind(struct nouveau_grobj *);
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extern void nouveau_dma_channel_init(struct nouveau_channel *);
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extern void nouveau_dma_kickoff(struct nouveau_channel *);
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#ifdef NOUVEAU_DMA_DEBUG
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static char faulty[1024];
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#endif
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static inline void
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nouveau_dma_out(struct nouveau_channel *chan, uint32_t data)
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{
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struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
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struct nouveau_dma_priv *dma = nvchan->dma;
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#ifdef NOUVEAU_DMA_DEBUG
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if (dma->push_free == 0) {
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printf("No space left in packet at %s\n", faulty);
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return;
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}
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dma->push_free--;
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#endif
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#ifdef NOUVEAU_DMA_TRACE
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{
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uint32_t offset = (dma->cur << 2) + dma->base;
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printf("\tOUT_RING %d/0x%08x -> 0x%08x\n",
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nvchan->drm.channel, offset, data);
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}
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#endif
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nvchan->pushbuf[dma->cur + (dma->base - nvchan->drm.put_base)/4] = data;
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dma->cur++;
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}
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static inline void
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nouveau_dma_outp(struct nouveau_channel *chan, uint32_t *ptr, int size)
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{
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struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
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struct nouveau_dma_priv *dma = nvchan->dma;
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(void)dma;
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#ifdef NOUVEAU_DMA_DEBUG
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if (dma->push_free < size) {
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printf("Packet too small. Free=%d, Need=%d\n",
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dma->push_free, size);
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return;
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}
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#endif
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#ifdef NOUVEAU_DMA_TRACE
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while (size--) {
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nouveau_dma_out(chan, *ptr);
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ptr++;
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}
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#else
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memcpy(&nvchan->pushbuf[dma->cur], ptr, size << 2);
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#ifdef NOUVEAU_DMA_DEBUG
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dma->push_free -= size;
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#endif
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dma->cur += size;
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#endif
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}
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static inline void
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nouveau_dma_space(struct nouveau_channel *chan, unsigned size)
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{
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struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
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struct nouveau_dma_priv *dma = nvchan->dma;
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if (dma->free < size) {
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if (nouveau_dma_wait(chan, size) && chan->hang_notify)
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chan->hang_notify(chan);
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}
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dma->free -= size;
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#ifdef NOUVEAU_DMA_DEBUG
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dma->push_free = size;
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#endif
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}
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static inline void
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nouveau_dma_begin(struct nouveau_channel *chan, struct nouveau_grobj *grobj,
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int method, int size, const char* file, int line)
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{
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struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
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struct nouveau_dma_priv *dma = nvchan->dma;
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(void)dma;
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#ifdef NOUVEAU_DMA_TRACE
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printf("BEGIN_RING %d/%08x/%d/0x%04x/%d\n", nvchan->drm.channel,
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grobj->handle, grobj->subc, method, size);
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#endif
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#ifdef NOUVEAU_DMA_DEBUG
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if (dma->push_free) {
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printf("Previous packet incomplete: %d left at %s\n",
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dma->push_free, faulty);
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return;
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}
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sprintf(faulty,"%s:%d",file,line);
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#endif
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nouveau_dma_space(chan, (size + 1));
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nouveau_dma_out(chan, (size << 18) | (grobj->subc << 13) | method);
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}
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#define RING_SPACE_CH(ch,sz) nouveau_dma_space((ch), (sz))
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#define BEGIN_RING_CH(ch,gr,m,sz) nouveau_dma_begin((ch), (gr), (m), (sz), __FUNCTION__, __LINE__ )
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#define OUT_RING_CH(ch, data) nouveau_dma_out((ch), (data))
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#define OUT_RINGp_CH(ch,ptr,dwords) nouveau_dma_outp((ch), (void*)(ptr), \
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(dwords))
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#define FIRE_RING_CH(ch) nouveau_dma_kickoff((ch))
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#define WAIT_RING_CH(ch,sz) nouveau_dma_wait((ch), (sz))
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#endif
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