add the i810 driver - no kernel driver yet

(build tested, but not physically tested)

1 files changed, 510 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i810/i810ioctl.c b/src/mesa/drivers/dri/i810/i810ioctl.c
new file mode 100644
index 00000000000..d769d58d566
--- /dev/null
+++ b/src/mesa/drivers/dri/i810/i810ioctl.c
@@ -0,0 +1,510 @@
+/* $XFree86: xc/lib/GL/mesa/src/drv/i810/i810ioctl.c,v 1.7 2002/10/30 12:51:33 alanh Exp $ */
+
+#include <unistd.h> /* for usleep() */
+
+#include "glheader.h"
+#include "mtypes.h"
+#include "macros.h"
+#include "dd.h"
+#include "swrast/swrast.h"
+#include "mm.h"
+
+#include "i810screen.h"
+#include "i810_dri.h"
+
+#include "i810context.h"
+#include "i810ioctl.h"
+#include "i810state.h"
+
+static drmBufPtr i810_get_buffer_ioctl( i810ContextPtr imesa )
+{
+   drmI810DMA dma;
+   drmBufPtr buf;
+   int retcode, i = 0;
+   
+   while (1) {
+      retcode = drmCommandWriteRead(imesa->driFd, DRM_I810_GETBUF,
+                                    &dma, sizeof(drmI810DMA));
+
+      if (dma.granted == 1 && retcode == 0) 
+	 break;
+      
+      if (++i > 1000) {
+	 drmCommandNone(imesa->driFd, DRM_I810_FLUSH);
+	 i = 0;
+      }
+   }
+
+   buf = &(imesa->i810Screen->bufs->list[dma.request_idx]);
+   buf->idx = dma.request_idx;
+   buf->used = 0;
+   buf->total = dma.request_size;
+   buf->address = (drmAddress)dma.virtual;
+
+   return buf;
+}
+
+
+
+#define DEPTH_SCALE ((1<<16)-1)
+
+static void i810Clear( GLcontext *ctx, GLbitfield mask, GLboolean all,
+		       GLint cx, GLint cy, GLint cw, GLint ch ) 
+{
+   i810ContextPtr imesa = I810_CONTEXT( ctx );
+   __DRIdrawablePrivate *dPriv = imesa->driDrawable;
+   const GLuint colorMask = *((GLuint *) &ctx->Color.ColorMask);
+   drmI810Clear clear;
+   int i;
+
+   clear.flags = 0;
+   clear.clear_color = imesa->ClearColor;
+   clear.clear_depth = (GLuint) (ctx->Depth.Clear * DEPTH_SCALE);
+
+   I810_FIREVERTICES( imesa );
+	
+   if ((mask & DD_FRONT_LEFT_BIT) && colorMask == ~0) {
+      clear.flags |= I810_FRONT;
+      mask &= ~DD_FRONT_LEFT_BIT;
+   }
+
+   if ((mask & DD_BACK_LEFT_BIT) && colorMask == ~0) {
+      clear.flags |= I810_BACK;
+      mask &= ~DD_BACK_LEFT_BIT;
+   }
+
+   if (mask & DD_DEPTH_BIT) {
+      if (ctx->Depth.Mask) 
+	 clear.flags |= I810_DEPTH;
+      mask &= ~DD_DEPTH_BIT;
+   }
+
+   if (clear.flags) {
+      LOCK_HARDWARE( imesa );
+
+      /* flip top to bottom */
+      cy = dPriv->h-cy-ch;
+      cx += imesa->drawX;
+      cy += imesa->drawY;
+
+      for (i = 0 ; i < imesa->numClipRects ; ) 
+      { 	 
+	 int nr = MIN2(i + I810_NR_SAREA_CLIPRECTS, imesa->numClipRects);
+	 XF86DRIClipRectPtr box = imesa->pClipRects;	 
+	 XF86DRIClipRectPtr b = imesa->sarea->boxes;
+	 int n = 0;
+
+	 if (!all) {
+	    for ( ; i < nr ; i++) {
+	       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;
+	       b++;
+	       n++;
+	    }
+	 } else {
+	    for ( ; i < nr ; i++) {
+	       *b++ = *(XF86DRIClipRectPtr)&box[i];
+	       n++;
+	    }
+	 }
+
+	 imesa->sarea->nbox = n;
+         drmCommandWrite(imesa->driFd, DRM_I810_CLEAR,
+                         &clear, sizeof(drmI810Clear));
+      }
+
+      UNLOCK_HARDWARE( imesa );
+      imesa->upload_cliprects = GL_TRUE;
+   }
+
+   if (mask) 
+      _swrast_Clear( ctx, mask, all, cx, cy, cw, ch );
+}
+
+
+
+
+/*
+ * Copy the back buffer to the front buffer. 
+ */
+void i810CopyBuffer( const __DRIdrawablePrivate *dPriv ) 
+{
+   i810ContextPtr imesa;
+   XF86DRIClipRectPtr pbox;
+   int nbox, i, tmp;
+
+   assert(dPriv);
+   assert(dPriv->driContextPriv);
+   assert(dPriv->driContextPriv->driverPrivate);
+
+   imesa = (i810ContextPtr) dPriv->driContextPriv->driverPrivate;
+
+   I810_FIREVERTICES( imesa );
+   LOCK_HARDWARE( imesa );
+   
+   pbox = dPriv->pClipRects;
+   nbox = dPriv->numClipRects;
+
+   for (i = 0 ; i < nbox ; )
+   {
+      int nr = MIN2(i + I810_NR_SAREA_CLIPRECTS, dPriv->numClipRects);
+      XF86DRIClipRectRec *b = (XF86DRIClipRectRec *)imesa->sarea->boxes;
+
+      imesa->sarea->nbox = nr - i;
+
+      for ( ; i < nr ; i++) 
+	 *b++ = pbox[i];
+
+      drmCommandNone(imesa->driFd, DRM_I810_SWAP);
+   }
+
+   tmp = GET_ENQUEUE_AGE(imesa);
+   UNLOCK_HARDWARE( imesa );
+
+   /* multiarb will suck the life out of the server without this throttle:
+    */
+   if (GET_DISPATCH_AGE(imesa) < imesa->lastSwap) {
+      i810WaitAge(imesa, imesa->lastSwap);
+   }
+
+   imesa->lastSwap = tmp;
+   imesa->upload_cliprects = GL_TRUE;
+}
+
+
+/*
+ * XXX implement when full-screen extension is done.
+ */
+void i810PageFlip( const __DRIdrawablePrivate *dPriv ) 
+{
+  i810ContextPtr imesa;
+  int tmp, ret;
+
+  assert(dPriv);
+  assert(dPriv->driContextPriv);
+  assert(dPriv->driContextPriv->driverPrivate);
+    
+  imesa = (i810ContextPtr) dPriv->driContextPriv->driverPrivate;
+
+  I810_FIREVERTICES( imesa );
+  LOCK_HARDWARE( imesa );
+  
+  if (dPriv->pClipRects) {
+    *(XF86DRIClipRectRec *)imesa->sarea->boxes = dPriv->pClipRects[0];
+    imesa->sarea->nbox = 1;
+  }
+  ret = drmCommandNone(imesa->driFd, DRM_I810_FLIP);
+  if (ret) {
+    fprintf(stderr, "%s: %d\n", __FUNCTION__, ret);
+    UNLOCK_HARDWARE( imesa );
+    exit(1);
+  }
+
+  tmp = GET_ENQUEUE_AGE(imesa);
+  UNLOCK_HARDWARE( imesa );
+  
+   /* multiarb will suck the life out of the server without this throttle:
+    */
+  if (GET_DISPATCH_AGE(imesa) < imesa->lastSwap) {
+    i810WaitAge(imesa, imesa->lastSwap);
+   }
+
+  /*  i810SetDrawBuffer( imesa->glCtx, imesa->glCtx->Color.DriverDrawBuffer );*/
+  i810DrawBuffer( imesa->glCtx, imesa->glCtx->Color.DrawBuffer );
+  imesa->upload_cliprects = GL_TRUE;
+  imesa->lastSwap = tmp;
+  return;
+}
+
+
+/* This waits for *everybody* to finish rendering -- overkill.
+ */
+void i810DmaFinish( i810ContextPtr imesa  ) 
+{
+   I810_FIREVERTICES( imesa );
+
+   LOCK_HARDWARE( imesa );
+   i810RegetLockQuiescent( imesa );
+   UNLOCK_HARDWARE( imesa );
+}
+
+
+void i810RegetLockQuiescent( i810ContextPtr imesa  ) 
+{
+   drmUnlock(imesa->driFd, imesa->hHWContext);
+   i810GetLock( imesa, DRM_LOCK_QUIESCENT ); 
+}
+
+void i810WaitAgeLocked( i810ContextPtr imesa, int age  ) 
+{
+   int i = 0, j;
+
+   while (++i < 5000) {
+      drmCommandNone(imesa->driFd, DRM_I810_GETAGE);
+      if (GET_DISPATCH_AGE(imesa) >= age)
+	 return;
+      for (j = 0 ; j < 1000 ; j++)
+	 ;
+   }
+
+   drmCommandNone(imesa->driFd, DRM_I810_FLUSH);
+}
+
+
+void i810WaitAge( i810ContextPtr imesa, int age  ) 
+{
+   int i = 0, j;
+
+   while (++i < 5000) {
+      drmCommandNone(imesa->driFd, DRM_I810_GETAGE);
+      if (GET_DISPATCH_AGE(imesa) >= age)
+	 return;
+      for (j = 0 ; j < 1000 ; j++)
+	 ;
+   }
+
+   i = 0;
+   while (++i < 1000) {
+      drmCommandNone(imesa->driFd, DRM_I810_GETAGE);
+      if (GET_DISPATCH_AGE(imesa) >= age)
+	 return;
+      usleep(1000);
+   }
+
+   LOCK_HARDWARE(imesa);
+   drmCommandNone(imesa->driFd, DRM_I810_FLUSH);
+   UNLOCK_HARDWARE(imesa);
+}
+
+
+
+
+static int intersect_rect( XF86DRIClipRectPtr out,
+                           XF86DRIClipRectPtr a,
+                           XF86DRIClipRectPtr b )
+{
+   *out = *a;
+   if (b->x1 > out->x1) out->x1 = b->x1;
+   if (b->x2 < out->x2) out->x2 = b->x2;
+   if (out->x1 >= out->x2) return 0;
+
+   if (b->y1 > out->y1) out->y1 = b->y1;
+   if (b->y2 < out->y2) out->y2 = b->y2;
+   if (out->y1 >= out->y2) return 0;
+   return 1;
+}
+
+
+static void emit_state( i810ContextPtr imesa )
+{
+   GLuint dirty = imesa->dirty;   
+   I810SAREAPtr sarea = imesa->sarea;
+
+   if (dirty & I810_UPLOAD_BUFFERS) {
+      memcpy( sarea->BufferState, imesa->BufferSetup, 
+	      sizeof(imesa->BufferSetup) );
+   }	 
+
+   if (dirty & I810_UPLOAD_CTX) {
+      memcpy( sarea->ContextState, imesa->Setup, 
+	      sizeof(imesa->Setup) );
+   }
+
+   if (dirty & I810_UPLOAD_TEX0) {
+      memcpy(sarea->TexState[0], 
+	     imesa->CurrentTexObj[0]->Setup,
+	     sizeof(imesa->CurrentTexObj[0]->Setup));
+   }
+
+   if (dirty & I810_UPLOAD_TEX1) {
+      GLuint *setup = sarea->TexState[1];
+
+      memcpy( setup,
+	      imesa->CurrentTexObj[1]->Setup,
+	      sizeof(imesa->CurrentTexObj[1]->Setup));
+
+      /* Need this for the case where both units are bound to the same
+       * texobj.  
+       */
+      setup[I810_TEXREG_MI1] ^= (MI1_MAP_0 ^ MI1_MAP_1);
+      setup[I810_TEXREG_MLC] ^= (MLC_MAP_0 ^ MLC_MAP_1);
+      setup[I810_TEXREG_MLL] ^= (MLL_MAP_0 ^ MLL_MAP_1);
+      setup[I810_TEXREG_MCS] ^= (MCS_COORD_0 ^ MCS_COORD_1);
+      setup[I810_TEXREG_MF]  ^= (MF_MAP_0 ^ MF_MAP_1);
+   }
+    
+   sarea->dirty = dirty;
+   imesa->dirty = 0;
+}
+
+
+static void age_imesa( i810ContextPtr imesa, int age )
+{
+   if (imesa->CurrentTexObj[0]) imesa->CurrentTexObj[0]->base.timestamp = age;
+   if (imesa->CurrentTexObj[1]) imesa->CurrentTexObj[1]->base.timestamp = age;
+}
+
+
+void i810FlushPrimsLocked( i810ContextPtr imesa )
+{
+   XF86DRIClipRectPtr pbox = (XF86DRIClipRectPtr)imesa->pClipRects;
+   int nbox = imesa->numClipRects;
+   drmBufPtr buffer = imesa->vertex_buffer;
+   I810SAREAPtr sarea = imesa->sarea;
+   drmI810Vertex vertex;
+   int i;
+	  
+   if (I810_DEBUG & DEBUG_STATE)
+      i810PrintDirty( __FUNCTION__, imesa->dirty );
+   
+   if (imesa->dirty)
+      emit_state( imesa );
+
+   vertex.idx = buffer->idx;
+   vertex.used = imesa->vertex_low;
+   vertex.discard = 0;
+   sarea->vertex_prim = imesa->hw_primitive;
+
+   if (!nbox) {
+      vertex.used = 0;
+   }
+   else if (nbox > I810_NR_SAREA_CLIPRECTS) {      
+      imesa->upload_cliprects = GL_TRUE;
+   }
+
+   if (!nbox || !imesa->upload_cliprects) 
+   {
+      if (nbox == 1) 
+	 sarea->nbox = 0;
+      else
+	 sarea->nbox = nbox;
+
+      vertex.discard = 1;	
+      drmCommandWrite(imesa->driFd, DRM_I810_VERTEX,
+                      &vertex, sizeof(drmI810Vertex));
+      age_imesa(imesa, sarea->last_enqueue);
+   }  
+   else 
+   {
+      for (i = 0 ; i < nbox ; )
+      {
+	 int nr = MIN2(i + I810_NR_SAREA_CLIPRECTS, nbox);
+	 XF86DRIClipRectPtr b = sarea->boxes;
+
+	 if (imesa->scissor) {
+	    sarea->nbox = 0;
+	 
+	    for ( ; i < nr ; i++) {
+	       b->x1 = pbox[i].x1 - imesa->drawX;
+	       b->y1 = pbox[i].y1 - imesa->drawY;
+	       b->x2 = pbox[i].x2 - imesa->drawX;
+	       b->y2 = pbox[i].y2 - imesa->drawY;
+
+	       if (intersect_rect(b, b, &imesa->scissor_rect)) {
+		  sarea->nbox++;
+		  b++;
+	       }
+	    }
+
+	    /* Culled?
+	     */
+	    if (!sarea->nbox) {
+	       if (nr < nbox) continue;
+	       vertex.used = 0;
+	    }
+	 } else {
+	    sarea->nbox = nr - i;
+	    for ( ; i < nr ; i++, b++) {
+	       b->x1 = pbox[i].x1 - imesa->drawX;
+	       b->y1 = pbox[i].y1 - imesa->drawY;
+	       b->x2 = pbox[i].x2 - imesa->drawX;
+	       b->y2 = pbox[i].y2 - imesa->drawY;
+	    }
+	 }
+	 
+	 /* Finished with the buffer?
+	  */
+	 if (nr == nbox) 
+	    vertex.discard = 1;
+
+	 drmCommandWrite(imesa->driFd, DRM_I810_VERTEX,
+                         &vertex, sizeof(drmI810Vertex));
+	 age_imesa(imesa, imesa->sarea->last_enqueue);
+      }
+   }
+
+   /* Reset imesa vars:
+    */
+   imesa->vertex_buffer = 0;
+   imesa->vertex_addr = 0;
+   imesa->vertex_low = 0;
+   imesa->vertex_high = 0;
+   imesa->vertex_last_prim = 0;
+   imesa->dirty = 0;
+   imesa->upload_cliprects = GL_FALSE;
+}
+
+void i810FlushPrimsGetBuffer( i810ContextPtr imesa )
+{
+   LOCK_HARDWARE(imesa);
+
+   if (imesa->vertex_buffer) 
+      i810FlushPrimsLocked( imesa );      
+
+   imesa->vertex_buffer = i810_get_buffer_ioctl( imesa );
+   imesa->vertex_high = imesa->vertex_buffer->total;
+   imesa->vertex_addr = (char *)imesa->vertex_buffer->address;
+   imesa->vertex_low = 4;	/* leave room for instruction header */
+   imesa->vertex_last_prim = imesa->vertex_low;
+   UNLOCK_HARDWARE(imesa);
+}
+
+
+void i810FlushPrims( i810ContextPtr imesa ) 
+{
+   if (imesa->vertex_buffer) {
+      LOCK_HARDWARE( imesa );
+      i810FlushPrimsLocked( imesa );
+      UNLOCK_HARDWARE( imesa );
+   }
+}
+
+
+
+int i810_check_copy(int fd)
+{
+   return(drmCommandNone(fd, DRM_I810_DOCOPY));
+}
+
+static void i810Flush( GLcontext *ctx )
+{
+   i810ContextPtr imesa = I810_CONTEXT( ctx );
+   I810_FIREVERTICES( imesa );
+}
+
+static void i810Finish( GLcontext *ctx  ) 
+{
+   i810ContextPtr imesa = I810_CONTEXT( ctx );
+   i810DmaFinish( imesa );
+}
+
+void i810InitIoctlFuncs( GLcontext *ctx )
+{
+   ctx->Driver.Flush = i810Flush;
+   ctx->Driver.Clear = i810Clear;
+   ctx->Driver.Finish = i810Finish;
+}