New driver for i915 as well as older i830/i845/i865 chipsets.

1 files changed, 668 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i915/intel_batchbuffer.c b/src/mesa/drivers/dri/i915/intel_batchbuffer.c
new file mode 100644
index 00000000000..9146cbebd4a
--- /dev/null
+++ b/src/mesa/drivers/dri/i915/intel_batchbuffer.c
@@ -0,0 +1,668 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ **************************************************************************/
+
+
+#include <stdio.h>
+#include <errno.h>
+
+#include "mtypes.h"
+#include "context.h"
+#include "enums.h"
+
+#include "intel_reg.h"
+#include "intel_batchbuffer.h"
+#include "intel_context.h"
+
+
+
+
+/* ================================================================
+ * Performance monitoring functions
+ */
+
+static void intel_fill_box( intelContextPtr intel,
+			    GLshort x, GLshort y,
+			    GLshort w, GLshort h,
+			    GLubyte r, GLubyte g, GLubyte b )
+{
+   intelEmitFillBlitLocked( intel, 
+			    intel->intelScreen->cpp,
+			    intel->intelScreen->backPitch,
+			    intel->intelScreen->frontOffset,
+			    x, y, w, h,
+			    INTEL_PACKCOLOR(intel->intelScreen->fbFormat,
+					    r,g,b,0xff));
+}
+
+static void intel_draw_performance_boxes( intelContextPtr intel )
+{
+   /* Purple box for page flipping
+    */
+   if ( intel->perf_boxes & I830_BOX_FLIP ) 
+      intel_fill_box( intel, 4, 4, 8, 8, 255, 0, 255 );
+
+   /* Red box if we have to wait for idle at any point
+    */
+   if ( intel->perf_boxes & I830_BOX_WAIT ) 
+      intel_fill_box( intel, 16, 4, 8, 8, 255, 0, 0 );
+
+   /* Blue box: lost context?
+    */
+   if ( intel->perf_boxes & I830_BOX_LOST_CONTEXT ) 
+      intel_fill_box( intel, 28, 4, 8, 8, 0, 0, 255 );
+
+   /* Yellow box for texture swaps
+    */
+   if ( intel->perf_boxes & I830_BOX_TEXTURE_LOAD ) 
+      intel_fill_box( intel, 40, 4, 8, 8, 255, 255, 0 );
+
+   /* Green box if hardware never idles (as far as we can tell)
+    */
+   if ( !(intel->perf_boxes & I830_BOX_RING_EMPTY) ) 
+      intel_fill_box( intel, 64, 4, 8, 8, 0, 255, 0 );
+
+
+   /* Draw bars indicating number of buffers allocated 
+    * (not a great measure, easily confused)
+    */
+#if 0
+   if (intel->dma_used) {
+      int bar = intel->dma_used / 10240;
+      if (bar > 100) bar = 100;
+      if (bar < 1) bar = 1;
+      intel_fill_box( intel, 4, 16, bar, 4, 196, 128, 128 );
+      intel->dma_used = 0;
+   }
+#endif
+
+   intel->perf_boxes = 0;
+}
+
+
+
+
+
+
+static int bad_prim_vertex_nr( int primitive, int nr )
+{
+   switch (primitive & PRIM3D_MASK) {
+   case PRIM3D_POINTLIST:
+      return nr < 1;
+   case PRIM3D_LINELIST:
+      return (nr & 1) || nr == 0;
+   case PRIM3D_LINESTRIP:
+      return nr < 2;
+   case PRIM3D_TRILIST:
+   case PRIM3D_RECTLIST:
+      return nr % 3 || nr == 0;
+   case PRIM3D_POLY:
+   case PRIM3D_TRIFAN:
+   case PRIM3D_TRISTRIP:
+   case PRIM3D_TRISTRIP_RVRSE:
+      return nr < 3;
+   default:
+      return 1;
+   }	
+}
+
+static void intel_flush_inline_primitive( GLcontext *ctx )
+{
+   intelContextPtr intel = INTEL_CONTEXT( ctx );
+   GLuint used = intel->batch.ptr - intel->prim.start_ptr;
+   GLuint vertcount;
+
+   assert(intel->prim.primitive != ~0);
+
+   if (1) {
+      /* Check vertex size against the vertex we're specifying to
+       * hardware.  If it's wrong, ditch the primitive.
+       */ 
+      if (!intel->vtbl.check_vertex_size( intel, intel->vertex_size )) 
+	 goto do_discard;
+
+      vertcount = (used - 4)/ (intel->vertex_size * 4);
+
+      if (!vertcount)
+	 goto do_discard;
+      
+      if (vertcount * intel->vertex_size * 4 != used - 4) {
+	 fprintf(stderr, "vertex size confusion %d %d\n", used, 
+		 intel->vertex_size * vertcount * 4);
+	 goto do_discard;
+      }
+
+      if (bad_prim_vertex_nr( intel->prim.primitive, vertcount )) {
+	 fprintf(stderr, "bad_prim_vertex_nr %x %d\n", intel->prim.primitive,
+		 vertcount);
+	 goto do_discard;
+      }
+   }
+
+   if (used < 8)
+      goto do_discard;
+
+   *(int *)intel->prim.start_ptr = (_3DPRIMITIVE | 
+				    intel->prim.primitive |
+				    (used/4-2));
+
+   goto finished;
+   
+ do_discard:
+   intel->batch.ptr -= used;
+   intel->batch.space += used;
+   assert(intel->batch.space >= 0);
+
+ finished:
+   intel->prim.primitive = ~0;
+   intel->prim.start_ptr = 0;
+   intel->prim.flush = 0;
+}
+
+
+/* Emit a primitive referencing vertices in a vertex buffer.
+ */
+void intelStartInlinePrimitive( intelContextPtr intel, GLuint prim )
+{
+   BATCH_LOCALS;
+
+   if (0)
+      fprintf(stderr, "%s %x\n", __FUNCTION__, prim);
+
+
+   /* Finish any in-progress primitive:
+    */
+   INTEL_FIREVERTICES( intel );
+   
+   /* Emit outstanding state:
+    */
+   intel->vtbl.emit_state( intel );
+   
+   /* Make sure there is some space in this buffer:
+    */
+   if (intel->vertex_size * 10 * sizeof(GLuint) >= intel->batch.space)
+      intelFlushBatch(intel, GL_TRUE); 
+
+
+#if 1
+   if (((int)intel->batch.ptr) & 0x4) {
+      BEGIN_BATCH(1);
+      OUT_BATCH(0);
+      ADVANCE_BATCH();
+   }
+#endif
+
+   /* Emit a slot which will be filled with the inline primitive
+    * command later.
+    */
+   BEGIN_BATCH(2);
+   OUT_BATCH( 0 );
+
+   intel->prim.start_ptr = batch_ptr;
+   intel->prim.primitive = prim;
+   intel->prim.flush = intel_flush_inline_primitive;
+
+   OUT_BATCH( 0 );
+   ADVANCE_BATCH();
+}
+
+
+void intelRestartInlinePrimitive( intelContextPtr intel )
+{
+   GLuint prim = intel->prim.primitive;
+
+   intel_flush_inline_primitive( &intel->ctx );
+   if (1) intelFlushBatch(intel, GL_TRUE); /* GL_TRUE - is critical */
+   intelStartInlinePrimitive( intel, prim );
+}
+
+
+
+void intelWrapInlinePrimitive( intelContextPtr intel )
+{
+   GLuint prim = intel->prim.primitive;
+
+   if (0)
+      fprintf(stderr, "%s\n", __FUNCTION__);
+   intel_flush_inline_primitive( &intel->ctx );
+   intelFlushBatch(intel, GL_TRUE);
+   intelStartInlinePrimitive( intel, prim );
+}
+
+
+/* Emit a primitive with space for inline vertices.
+ */
+GLuint *intelEmitInlinePrimitiveLocked(intelContextPtr intel, 
+				       int primitive,
+				       int dwords,
+				       int vertex_size )
+{
+   GLuint *tmp = 0;
+   BATCH_LOCALS;
+
+   if (0)
+      fprintf(stderr, "%s 0x%x %d\n", __FUNCTION__, primitive, dwords);
+
+   /* Emit outstanding state:
+    */
+   intel->vtbl.emit_state( intel );
+
+
+   if (1) {
+      int used = dwords * 4;
+      int vertcount;
+
+      /* Check vertex size against the vertex we're specifying to
+       * hardware.  If it's wrong, ditch the primitive.
+       */ 
+      if (!intel->vtbl.check_vertex_size( intel, vertex_size )) 
+	 goto do_discard;
+
+      vertcount = dwords / vertex_size;
+      
+      if (dwords % vertex_size) {
+	 fprintf(stderr, "did not request a whole number of vertices\n");
+	 goto do_discard;
+      }
+
+      if (bad_prim_vertex_nr( primitive, vertcount )) {
+	 fprintf(stderr, "bad_prim_vertex_nr %x %d\n", primitive, vertcount);
+	 goto do_discard;
+      }
+
+      if (used < 8)
+	 goto do_discard;
+   }
+
+   /* Emit 3D_PRIMITIVE commands:
+    */
+   BEGIN_BATCH(1 + dwords);
+   OUT_BATCH( _3DPRIMITIVE | 
+	      primitive |
+	      (dwords-1) );
+
+   tmp = (GLuint *)batch_ptr;
+   batch_ptr += dwords * 4;
+
+   ADVANCE_BATCH();
+
+ do_discard:
+   return tmp;
+}
+
+
+
+/*
+ * Copy the back buffer to the front buffer. 
+ */
+void intelCopyBuffer( const __DRIdrawablePrivate *dPriv ) 
+{
+   intelContextPtr intel;
+
+   if (0)
+      fprintf(stderr, "%s\n", __FUNCTION__);
+
+   assert(dPriv);
+   assert(dPriv->driContextPriv);
+   assert(dPriv->driContextPriv->driverPrivate);
+
+   intel = (intelContextPtr) dPriv->driContextPriv->driverPrivate;
+
+   intelFlush( &intel->ctx );
+   LOCK_HARDWARE( intel );
+   {
+      intelScreenPrivate *intelScreen = intel->intelScreen;
+      __DRIdrawablePrivate *dPriv = intel->driDrawable;
+      int nbox = dPriv->numClipRects;
+      drm_clip_rect_t *pbox = dPriv->pClipRects;
+      int pitch = intelScreen->frontPitch;
+      int cpp = intelScreen->cpp;
+      int i;
+      GLuint CMD, BR13;
+      BATCH_LOCALS;
+
+      switch(cpp) {
+      case 2: 
+	 BR13 = (pitch * cpp) | (0xCC << 16) | (1<<24);
+	 CMD = XY_SRC_COPY_BLT_CMD;
+	 break;
+      case 4:
+	 BR13 = (pitch * cpp) | (0xCC << 16) | (1<<24) | (1<<25);
+	 CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
+		XY_SRC_COPY_BLT_WRITE_RGB);
+	 break;
+      default:
+	 BR13 = (pitch * cpp) | (0xCC << 16) | (1<<24);
+	 CMD = XY_SRC_COPY_BLT_CMD;
+	 break;
+      }
+
+      if (0)
+	 intel_draw_performance_boxes( intel );
+
+      for (i = 0 ; i < nbox; i++, pbox++) 
+      {
+	 if (pbox->x1 > pbox->x2 ||
+	     pbox->y1 > pbox->y2 ||
+	     pbox->x2 > intelScreen->width ||
+	     pbox->y2 > intelScreen->height)
+	    continue;
+ 
+	 BEGIN_BATCH( 8);
+	 OUT_BATCH( CMD );
+	 OUT_BATCH( BR13 );
+	 OUT_BATCH( (pbox->y1 << 16) | pbox->x1 );
+	 OUT_BATCH( (pbox->y2 << 16) | pbox->x2 );
+
+	 if (intel->sarea->pf_current_page == 0) 
+	    OUT_BATCH( intelScreen->frontOffset );
+	 else
+	    OUT_BATCH( intelScreen->backOffset );			
+
+	 OUT_BATCH( (pbox->y1 << 16) | pbox->x1 );
+	 OUT_BATCH( BR13 & 0xffff );
+
+	 if (intel->sarea->pf_current_page == 0) 
+	    OUT_BATCH( intelScreen->backOffset );			
+	 else
+	    OUT_BATCH( intelScreen->frontOffset );
+
+	 ADVANCE_BATCH();
+      }
+   }
+   intelFlushBatchLocked( intel, GL_TRUE, GL_TRUE, GL_TRUE );
+   UNLOCK_HARDWARE( intel );
+}
+
+
+
+
+void intelEmitFillBlitLocked( intelContextPtr intel,
+			      GLuint cpp,
+			      GLshort dst_pitch,
+			      GLuint dst_offset,
+			      GLshort x, GLshort y, 
+			      GLshort w, GLshort h,
+			      GLuint color )
+{
+   GLuint BR13, CMD;
+   BATCH_LOCALS;
+
+   dst_pitch *= cpp;
+
+   switch(cpp) {
+   case 1: 
+   case 2: 
+   case 3: 
+      BR13 = dst_pitch | (0xF0 << 16) | (1<<24);
+      CMD = XY_COLOR_BLT_CMD;
+      break;
+   case 4:
+      BR13 = dst_pitch | (0xF0 << 16) | (1<<24) | (1<<25);
+      CMD = (XY_COLOR_BLT_CMD | XY_COLOR_BLT_WRITE_ALPHA |
+	     XY_COLOR_BLT_WRITE_RGB);
+      break;
+   default:
+      return;
+   }
+
+   BEGIN_BATCH( 6);
+   OUT_BATCH( CMD );
+   OUT_BATCH( BR13 );
+   OUT_BATCH( (y << 16) | x );
+   OUT_BATCH( ((y+h) << 16) | (x+w) );
+   OUT_BATCH( dst_offset );
+   OUT_BATCH( color );
+   ADVANCE_BATCH();
+}
+
+
+/* Copy BitBlt
+ */
+void intelEmitCopyBlitLocked( intelContextPtr intel,
+			      GLuint cpp,
+			      GLshort src_pitch,
+			      GLuint  src_offset,
+			      GLshort dst_pitch,
+			      GLuint  dst_offset,
+			      GLshort src_x, GLshort src_y,
+			      GLshort dst_x, GLshort dst_y,
+			      GLshort w, GLshort h )
+{
+   GLuint CMD, BR13;
+   int dst_y2 = dst_y + h;
+   int dst_x2 = dst_x + w;
+   BATCH_LOCALS;
+
+   src_pitch *= cpp;
+   dst_pitch *= cpp;
+
+   switch(cpp) {
+   case 1: 
+   case 2: 
+   case 3: 
+      BR13 = dst_pitch | (0xCC << 16) | (1<<24);
+      CMD = XY_SRC_COPY_BLT_CMD;
+      break;
+   case 4:
+      BR13 = dst_pitch | (0xCC << 16) | (1<<24) | (1<<25);
+      CMD = (XY_SRC_COPY_BLT_CMD | XY_SRC_COPY_BLT_WRITE_ALPHA |
+	     XY_SRC_COPY_BLT_WRITE_RGB);
+      break;
+   default:
+      return;
+   }
+
+   if (dst_y2 < dst_y ||
+       dst_x2 < dst_x) {
+      return;
+   }
+
+   BEGIN_BATCH( 12);
+   OUT_BATCH( CMD );
+   OUT_BATCH( BR13 );
+   OUT_BATCH( (dst_y << 16) | dst_x );
+   OUT_BATCH( (dst_y2 << 16) | dst_x2 );
+   OUT_BATCH( dst_offset );	
+   OUT_BATCH( (src_y << 16) | src_x );
+   OUT_BATCH( src_pitch );
+   OUT_BATCH( src_offset ); 
+   ADVANCE_BATCH();
+}
+
+
+
+void intelClearWithBlit(GLcontext *ctx, GLbitfield flags, GLboolean all,
+		      GLint cx1, GLint cy1, GLint cw, GLint ch)
+{
+   intelContextPtr intel = INTEL_CONTEXT( ctx );
+   intelScreenPrivate *intelScreen = intel->intelScreen;
+   GLuint clear_depth, clear_color;
+   GLint cx, cy;
+   GLint pitch = intelScreen->frontPitch;
+   GLint cpp = intelScreen->cpp;
+   GLint i;
+   GLuint BR13, CMD, D_CMD;
+   BATCH_LOCALS;
+
+   
+   clear_color = intel->ClearColor;
+   clear_depth = 0;
+
+   if (flags & DD_DEPTH_BIT) {
+      clear_depth = (GLuint)(ctx->Depth.Clear * intel->ClearDepth);
+   }
+
+   if (flags & DD_STENCIL_BIT) {
+      clear_depth |= (ctx->Stencil.Clear & 0xff) << 24;
+   }
+
+   switch(cpp) {
+   case 2: 
+      BR13 = (0xF0 << 16) | (pitch * cpp) | (1<<24);
+      D_CMD = CMD = XY_COLOR_BLT_CMD;
+      break;
+   case 4:
+      BR13 = (0xF0 << 16) | (pitch * cpp) | (1<<24) | (1<<25);
+      CMD = (XY_COLOR_BLT_CMD |
+	     XY_COLOR_BLT_WRITE_ALPHA | 
+	     XY_COLOR_BLT_WRITE_RGB);
+      D_CMD = XY_COLOR_BLT_CMD;
+      if (flags & DD_DEPTH_BIT) D_CMD |= XY_COLOR_BLT_WRITE_RGB;
+      if (flags & DD_STENCIL_BIT) D_CMD |= XY_COLOR_BLT_WRITE_ALPHA;
+      break;
+   default:
+      BR13 = (0xF0 << 16) | (pitch * cpp) | (1<<24);
+      D_CMD = CMD = XY_COLOR_BLT_CMD;
+      break;
+   }
+
+   intelFlush( &intel->ctx );
+   LOCK_HARDWARE( intel );
+   {
+      /* flip top to bottom */
+      cy = intel->driDrawable->h-cy1-ch;
+      cx = cx1 + intel->drawX;
+      cy += intel->drawY;
+
+      /* adjust for page flipping */
+      if ( intel->sarea->pf_current_page == 1 ) {
+	 GLuint tmp = flags;
+
+	 flags &= ~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT);
+	 if ( tmp & DD_FRONT_LEFT_BIT ) flags |= DD_BACK_LEFT_BIT;
+	 if ( tmp & DD_BACK_LEFT_BIT )  flags |= DD_FRONT_LEFT_BIT;
+      }
+
+      for (i = 0 ; i < intel->numClipRects ; i++) 
+      { 	 
+	 drm_clip_rect_t *box = &intel->pClipRects[i];	 
+	 drm_clip_rect_t b;
+
+	 if (!all) {
+	    GLint x = box[i].x1;
+	    GLint y = box[i].y1;
+	    GLint w = box[i].x2 - x;
+	    GLint h = box[i].y2 - y;
+
+	    if (x < cx) w -= cx - x, x = cx; 
+	    if (y < cy) h -= cy - y, y = cy;
+	    if (x + w > cx + cw) w = cx + cw - x;
+	    if (y + h > cy + ch) h = cy + ch - y;
+	    if (w <= 0) continue;
+	    if (h <= 0) continue;
+
+	    b.x1 = x;
+	    b.y1 = y;
+	    b.x2 = x + w;
+	    b.y2 = y + h;      
+	 } else {
+	    b = *box;
+	 }
+
+
+	 if (b.x1 > b.x2 ||
+	     b.y1 > b.y2 ||
+	     b.x2 > intelScreen->width ||
+	     b.y2 > intelScreen->height)
+	    continue;
+
+	 if ( flags & DD_FRONT_LEFT_BIT ) {	    
+	    BEGIN_BATCH( 6);	    
+	    OUT_BATCH( CMD );
+	    OUT_BATCH( BR13 );
+	    OUT_BATCH( (b.y1 << 16) | b.x1 );
+	    OUT_BATCH( (b.y2 << 16) | b.x2 );
+	    OUT_BATCH( intelScreen->frontOffset );
+	    OUT_BATCH( clear_color );
+	    ADVANCE_BATCH();
+	 }
+
+	 if ( flags & DD_BACK_LEFT_BIT ) {
+	    BEGIN_BATCH( 6); 
+	    OUT_BATCH( CMD );
+	    OUT_BATCH( BR13 );
+	    OUT_BATCH( (b.y1 << 16) | b.x1 );
+	    OUT_BATCH( (b.y2 << 16) | b.x2 );
+	    OUT_BATCH( intelScreen->backOffset );
+	    OUT_BATCH( clear_color );
+	    ADVANCE_BATCH();
+	 }
+
+	 if ( flags & (DD_STENCIL_BIT | DD_DEPTH_BIT) ) {
+	    BEGIN_BATCH( 6);
+	    OUT_BATCH( D_CMD );
+	    OUT_BATCH( BR13 );
+	    OUT_BATCH( (b.y1 << 16) | b.x1 );
+	    OUT_BATCH( (b.y2 << 16) | b.x2 );
+	    OUT_BATCH( intelScreen->depthOffset );
+	    OUT_BATCH( clear_depth );
+	    ADVANCE_BATCH();
+	 }      
+      }
+   }
+   intelFlushBatchLocked( intel, GL_TRUE, GL_FALSE, GL_TRUE );
+   UNLOCK_HARDWARE( intel );
+}
+
+
+
+
+void intelDestroyBatchBuffer( GLcontext *ctx )
+{
+   intelContextPtr intel = INTEL_CONTEXT(ctx);
+
+   if (intel->alloc.ptr) {
+      intelFreeAGP( intel, intel->alloc.ptr );
+      intel->alloc.ptr = 0;
+   }
+}
+
+
+void intelInitBatchBuffer( GLcontext *ctx )
+{
+   intelContextPtr intel = INTEL_CONTEXT(ctx);
+
+   if (!intel->intelScreen->allow_batchbuffer || getenv("INTEL_NO_BATCH")) {
+      intel->alloc.size = 8 * 1024;
+      intel->alloc.ptr = malloc( intel->alloc.size );
+      intel->alloc.offset = 0;
+   }
+   else {
+      switch (intel->intelScreen->deviceID) {
+      case PCI_CHIP_I865_G:
+	 /* HW bug?  Seems to crash if batchbuffer crosses 4k boundary.
+	  */
+	 intel->alloc.size = 8 * 1024; 
+	 break;
+      default:
+	 /* This is the smallest amount of memory the kernel deals with.
+	  * We'd ideally like to make this smaller.
+	  */
+	 intel->alloc.size = 1 << intel->intelScreen->logTextureGranularity;
+	 break;
+      }
+
+      intel->alloc.ptr = intelAllocateAGP( intel, intel->alloc.size );
+      if (intel->alloc.ptr)
+	 intel->alloc.offset = 
+	    intelAgpOffsetFromVirtual( intel, intel->alloc.ptr );
+   }
+
+   if (!intel->alloc.ptr) {
+      FALLBACK(intel, INTEL_FALLBACK_NO_BATCHBUFFER, 1);
+   }
+   else {
+      intel->prim.flush = 0;
+      intel->vtbl.emit_invarient_state( intel );
+
+      /* Make sure this gets to the hardware, even if we have no cliprects:
+       */
+      LOCK_HARDWARE( intel );
+      intelFlushBatchLocked( intel, GL_TRUE, GL_FALSE, GL_TRUE );
+      UNLOCK_HARDWARE( intel );
+   }
+}