nouveau: avoid relocations where possible.

Potential relocations are emitted as NOPs where they're needed.  In the
event a buffer moves, the pushbuf code will emit the relevant state
changes into the NOPs.

Just a start, more work is needed to get this looking how I want it to.

1 files changed, 82 insertions, 62 deletions

diff --git a/src/mesa/pipe/nv40/nv40_state_emit.c b/src/mesa/pipe/nv40/nv40_state_emit.c
index c9a7a2e364..66b98d5fab 100644
--- a/src/mesa/pipe/nv40/nv40_state_emit.c
+++ b/src/mesa/pipe/nv40/nv40_state_emit.c
@@ -1,94 +1,114 @@
 #include "nv40_context.h"
 #include "nv40_state.h"
 
-void
-nv40_emit_hw_state(struct nv40_context *nv40)
+/* Emit relocs for every referenced buffer.
+ *
+ * This is to ensure the bufmgr has an accurate idea of how
+ * the buffer is used.  These relocs appear in the push buffer as
+ * NOPs, and will only be turned into state changes if a buffer
+ * actually moves.
+ */
+static void
+nv40_state_emit_dummy_relocs(struct nv40_context *nv40)
 {
-	int i;
-
-	if (nv40->dirty & NV40_NEW_FRAGPROG) {
-		nv40_fragprog_bind(nv40, nv40->fragprog.current);
-		/*XXX: clear NV40_NEW_FRAGPROG if no new program uploaded */
-	}
-
-	if (nv40->dirty_samplers || (nv40->dirty & NV40_NEW_FRAGPROG)) {
-		nv40_fragtex_bind(nv40);
-
-		BEGIN_RING(curie, NV40TCL_TEX_CACHE_CTL, 1);
-		OUT_RING  (2);
-		BEGIN_RING(curie, NV40TCL_TEX_CACHE_CTL, 1);
-		OUT_RING  (1);
-		nv40->dirty &= ~NV40_NEW_FRAGPROG;
-	}
-
-	if (nv40->dirty & NV40_NEW_VERTPROG) {
-		nv40_vertprog_bind(nv40, nv40->vertprog.current);
-		nv40->dirty &= ~NV40_NEW_VERTPROG;
-	}
-
-	nv40->dirty_samplers = 0;
-
-	/* Emit relocs for every referenced buffer.
-	 * This is to ensure the bufmgr has an accurate idea of how
-	 * the buffer is used.  This isn't very efficient, but we don't
-	 * seem to take a significant performance hit.  Will be improved
-	 * at some point.  Vertex arrays are emitted by nv40_vbo.c
-	 */
+	unsigned rt_flags, tx_flags, fp_flags;
+	int i;	
+	
+	rt_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_RDWR | NOUVEAU_BO_DUMMY;
+	tx_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD |
+		   NOUVEAU_BO_DUMMY;
+	fp_flags = NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD |
+		   NOUVEAU_BO_DUMMY;
 
 	/* Render targets */
 	if (nv40->rt_enable & NV40TCL_RT_ENABLE_COLOR0) {
-		BEGIN_RING(curie, NV40TCL_DMA_COLOR0, 1);
-		OUT_RELOCo(nv40->rt[0], NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
-		BEGIN_RING(curie, NV40TCL_COLOR0_OFFSET, 1);
-		OUT_RELOCl(nv40->rt[0], 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
+		OUT_RELOCm(nv40->rt[0], rt_flags,
+			   curie, NV40TCL_DMA_COLOR0, 1);
+		OUT_RELOCo(nv40->rt[0], rt_flags);
+		OUT_RELOCm(nv40->rt[0], rt_flags,
+			   curie, NV40TCL_COLOR0_OFFSET, 1);
+		OUT_RELOCl(nv40->rt[0], 0, rt_flags);
 	}
 
 	if (nv40->rt_enable & NV40TCL_RT_ENABLE_COLOR1) {
-		BEGIN_RING(curie, NV40TCL_DMA_COLOR1, 1);
-		OUT_RELOCo(nv40->rt[1], NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
-		BEGIN_RING(curie, NV40TCL_COLOR1_OFFSET, 1);
-		OUT_RELOCl(nv40->rt[1], 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
+		OUT_RELOCm(nv40->rt[1], rt_flags,
+			   curie, NV40TCL_DMA_COLOR1, 1);
+		OUT_RELOCo(nv40->rt[1], rt_flags);
+		OUT_RELOCm(nv40->rt[1], rt_flags,
+			   curie, NV40TCL_COLOR1_OFFSET, 1);
+		OUT_RELOCl(nv40->rt[1], 0, rt_flags);
 	}
 
 	if (nv40->rt_enable & NV40TCL_RT_ENABLE_COLOR2) {
-		BEGIN_RING(curie, NV40TCL_DMA_COLOR2, 1);
-		OUT_RELOCo(nv40->rt[2], NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
-		BEGIN_RING(curie, NV40TCL_COLOR2_OFFSET, 1);
-		OUT_RELOCl(nv40->rt[2], 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
+		OUT_RELOCm(nv40->rt[2], rt_flags,
+			   curie, NV40TCL_DMA_COLOR2, 1);
+		OUT_RELOCo(nv40->rt[2], rt_flags);
+		OUT_RELOCm(nv40->rt[2], rt_flags,
+			   curie, NV40TCL_COLOR2_OFFSET, 1);
+		OUT_RELOCl(nv40->rt[2], 0, rt_flags);
 	}
 
 	if (nv40->rt_enable & NV40TCL_RT_ENABLE_COLOR3) {
-		BEGIN_RING(curie, NV40TCL_DMA_COLOR3, 1);
-		OUT_RELOCo(nv40->rt[3], NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
-		BEGIN_RING(curie, NV40TCL_COLOR3_OFFSET, 1);
-		OUT_RELOCl(nv40->rt[3], 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
+		OUT_RELOCm(nv40->rt[3], rt_flags,
+			   curie, NV40TCL_DMA_COLOR3, 1);
+		OUT_RELOCo(nv40->rt[3], rt_flags);
+		OUT_RELOCm(nv40->rt[3], rt_flags,
+			   curie, NV40TCL_COLOR3_OFFSET, 1);
+		OUT_RELOCl(nv40->rt[3], 0, rt_flags);
 	}
 
 	if (nv40->zeta) {
-		BEGIN_RING(curie, NV40TCL_DMA_ZETA, 1);
-		OUT_RELOCo(nv40->zeta, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
-		BEGIN_RING(curie, NV40TCL_ZETA_OFFSET, 1);
-		OUT_RELOCl(nv40->zeta, 0, NOUVEAU_BO_VRAM | NOUVEAU_BO_WR);
+		OUT_RELOCm(nv40->zeta, rt_flags, curie, NV40TCL_DMA_ZETA, 1);
+		OUT_RELOCo(nv40->zeta, rt_flags);
+		OUT_RELOCm(nv40->zeta, rt_flags, curie, NV40TCL_ZETA_OFFSET, 1);
+		OUT_RELOCl(nv40->zeta, 0, rt_flags);
 	}
 
 	/* Texture images */
 	for (i = 0; i < 16; i++) {
 		if (!(nv40->fp_samplers & (1 << i)))
 			continue;
-		BEGIN_RING(curie, NV40TCL_TEX_OFFSET(i), 2);
-		OUT_RELOCl(nv40->tex[i].buffer, 0, NOUVEAU_BO_VRAM |
-			   NOUVEAU_BO_GART | NOUVEAU_BO_RD);
+		OUT_RELOCm(nv40->tex[i].buffer, tx_flags,
+			   curie, NV40TCL_TEX_OFFSET(i), 2);
+		OUT_RELOCl(nv40->tex[i].buffer, 0, tx_flags);
 		OUT_RELOCd(nv40->tex[i].buffer, nv40->tex[i].format,
-			   NOUVEAU_BO_VRAM | NOUVEAU_BO_GART | NOUVEAU_BO_RD |
-			   NOUVEAU_BO_OR, NV40TCL_TEX_FORMAT_DMA0,
+			   tx_flags | NOUVEAU_BO_OR, NV40TCL_TEX_FORMAT_DMA0,
 			   NV40TCL_TEX_FORMAT_DMA1);
 	}
 
 	/* Fragment program */
-	BEGIN_RING(curie, NV40TCL_FP_ADDRESS, 1);
-	OUT_RELOC (nv40->fragprog.active->buffer, 0, NOUVEAU_BO_VRAM |
-	           NOUVEAU_BO_GART | NOUVEAU_BO_RD | NOUVEAU_BO_LOW |
-		   NOUVEAU_BO_OR, NV40TCL_FP_ADDRESS_DMA0,
-		   NV40TCL_FP_ADDRESS_DMA1);
+	OUT_RELOCm(nv40->fragprog.active->buffer, fp_flags,
+		   curie, NV40TCL_FP_ADDRESS, 1);
+	OUT_RELOC (nv40->fragprog.active->buffer, 0,
+		   fp_flags | NOUVEAU_BO_OR | NOUVEAU_BO_LOW,
+		   NV40TCL_FP_ADDRESS_DMA0, NV40TCL_FP_ADDRESS_DMA1);
+}
+
+void
+nv40_emit_hw_state(struct nv40_context *nv40)
+{
+	if (nv40->dirty & NV40_NEW_FRAGPROG) {
+		nv40_fragprog_bind(nv40, nv40->fragprog.current);
+		/*XXX: clear NV40_NEW_FRAGPROG if no new program uploaded */
+	}
+
+	if (nv40->dirty_samplers || (nv40->dirty & NV40_NEW_FRAGPROG)) {
+		nv40_fragtex_bind(nv40);
+
+		BEGIN_RING(curie, NV40TCL_TEX_CACHE_CTL, 1);
+		OUT_RING  (2);
+		BEGIN_RING(curie, NV40TCL_TEX_CACHE_CTL, 1);
+		OUT_RING  (1);
+		nv40->dirty &= ~NV40_NEW_FRAGPROG;
+	}
+
+	if (nv40->dirty & NV40_NEW_VERTPROG) {
+		nv40_vertprog_bind(nv40, nv40->vertprog.current);
+		nv40->dirty &= ~NV40_NEW_VERTPROG;
+	}
+
+	nv40->dirty_samplers = 0;
+
+	nv40_state_emit_dummy_relocs(nv40);
 }