1 files changed, 143 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/nouveau/common/nouveau_dma.h b/src/gallium/winsys/drm/nouveau/common/nouveau_dma.h
new file mode 100644
index 00000000000..cfa6d26e828
--- /dev/null
+++ b/src/gallium/winsys/drm/nouveau/common/nouveau_dma.h
@@ -0,0 +1,143 @@
+/*
+ * Copyright 2007 Nouveau Project
+ *
+ * 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 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 AUTHORS 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 <string.h>
+#include "nouveau_drmif.h"
+#include "nouveau_local.h"
+
+#define RING_SKIPS 8
+
+extern int  nouveau_dma_wait(struct nouveau_channel *chan, int size);
+extern void nouveau_dma_subc_bind(struct nouveau_grobj *);
+extern void nouveau_dma_channel_init(struct nouveau_channel *);
+extern void nouveau_dma_kickoff(struct nouveau_channel *);
+
+#ifdef NOUVEAU_DMA_DEBUG
+static char faulty[1024];
+#endif
+
+static inline void
+nouveau_dma_out(struct nouveau_channel *chan, uint32_t data)
+{
+	struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
+	struct nouveau_dma_priv *dma = nvchan->dma;
+
+#ifdef NOUVEAU_DMA_DEBUG
+	if (dma->push_free == 0) {
+		NOUVEAU_ERR("No space left in packet at %s\n", faulty);
+		return;
+	}
+	dma->push_free--;
+#endif
+#ifdef NOUVEAU_DMA_TRACE
+	{
+		uint32_t offset = (dma->cur << 2) + dma->base;
+		NOUVEAU_MSG("\tOUT_RING %d/0x%08x -> 0x%08x\n",
+			    nvchan->drm.channel, offset, data);
+	}
+#endif
+	nvchan->pushbuf[dma->cur + (dma->base - nvchan->drm.put_base)/4] = data;
+	dma->cur++;
+}
+
+static inline void
+nouveau_dma_outp(struct nouveau_channel *chan, uint32_t *ptr, int size)
+{
+	struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
+	struct nouveau_dma_priv *dma = nvchan->dma;
+	(void)dma;
+
+#ifdef NOUVEAU_DMA_DEBUG
+	if (dma->push_free < size) {
+		NOUVEAU_ERR("Packet too small.  Free=%d, Need=%d\n",
+			    dma->push_free, size);
+		return;
+	}
+#endif
+#ifdef NOUVEAU_DMA_TRACE
+	while (size--) {
+		nouveau_dma_out(chan, *ptr);
+		ptr++;
+	}
+#else
+	memcpy(&nvchan->pushbuf[dma->cur], ptr, size << 2);
+#ifdef NOUVEAU_DMA_DEBUG
+	dma->push_free -= size;
+#endif
+	dma->cur += size;
+#endif
+}
+
+static inline void
+nouveau_dma_space(struct nouveau_channel *chan, int size)
+{
+	struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
+	struct nouveau_dma_priv *dma = nvchan->dma;
+
+	if (dma->free < size) {
+		if (nouveau_dma_wait(chan, size) && chan->hang_notify)
+			chan->hang_notify(chan);
+	}
+	dma->free -= size;
+#ifdef NOUVEAU_DMA_DEBUG
+	dma->push_free = size;
+#endif
+}
+
+static inline void
+nouveau_dma_begin(struct nouveau_channel *chan, struct nouveau_grobj *grobj,
+		  int method, int size, const char* file, int line)
+{
+	struct nouveau_channel_priv *nvchan = nouveau_channel(chan);
+	struct nouveau_dma_priv *dma = nvchan->dma;
+	(void)dma;
+
+#ifdef NOUVEAU_DMA_TRACE
+	NOUVEAU_MSG("BEGIN_RING %d/%08x/%d/0x%04x/%d\n", nvchan->drm.channel,
+		    grobj->handle, grobj->subc, method, size);
+#endif
+
+#ifdef NOUVEAU_DMA_DEBUG
+	if (dma->push_free) {
+		NOUVEAU_ERR("Previous packet incomplete: %d left at %s\n",
+			    dma->push_free, faulty);
+		return;
+	}
+	sprintf(faulty,"%s:%d",file,line);
+#endif
+
+	nouveau_dma_space(chan, (size + 1));
+	nouveau_dma_out(chan, (size << 18) | (grobj->subc << 13) | method);
+}
+
+#define RING_SPACE_CH(ch,sz)         nouveau_dma_space((ch), (sz))
+#define BEGIN_RING_CH(ch,gr,m,sz)    nouveau_dma_begin((ch), (gr), (m), (sz), __FUNCTION__, __LINE__ )
+#define OUT_RING_CH(ch, data)        nouveau_dma_out((ch), (data))
+#define OUT_RINGp_CH(ch,ptr,dwords)  nouveau_dma_outp((ch), (void*)(ptr),      \
+						      (dwords))
+#define FIRE_RING_CH(ch)             nouveau_dma_kickoff((ch))
+#define WAIT_RING_CH(ch,sz)          nouveau_dma_wait((ch), (sz))
+		
+#endif