From 29eac4de82f52c8b76842616a0cfea52c7037062 Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Fri, 25 Apr 2003 11:22:34 +0000
Subject: get client & server processes working properly

---
 src/mesa/drivers/dri/radeon/radeon_lock.c          |  47 +--
 src/mesa/drivers/dri/radeon/radeon_lock.h          |  15 +-
 src/mesa/drivers/dri/radeon/radeon_subset_select.c | 114 ++++++-
 src/mesa/drivers/dri/radeon/server/radeon_dri.c    | 143 ++++-----
 src/miniglx/dri_util.c                             |  24 +-
 src/miniglx/miniglx.c                              |  69 +----
 src/miniglx/miniglxP.h                             |  33 ++-
 src/miniglx/miniglx_events.c                       | 329 +++++++++++++--------
 8 files changed, 436 insertions(+), 338 deletions(-)

diff --git a/src/mesa/drivers/dri/radeon/radeon_lock.c b/src/mesa/drivers/dri/radeon/radeon_lock.c
index 5bc74836a5..f0ef672931 100644
--- a/src/mesa/drivers/dri/radeon/radeon_lock.c
+++ b/src/mesa/drivers/dri/radeon/radeon_lock.c
@@ -134,6 +134,12 @@ static void validate_drawable( radeonContextPtr rmesa )
 
    fprintf(stderr, "%s\n", __FUNCTION__);
 
+   fprintf(stderr, 
+	   "rmesa->lastStamp %d dpriv->lastStamp %d *(dpriv->pStamp) %d\n",
+	   rmesa->lastStamp, 
+	   dPriv->lastStamp,
+	   *(dPriv->pStamp));
+
    /* The window might have moved, so we might need to get new clip
     * rects.
     *
@@ -144,7 +150,8 @@ static void validate_drawable( radeonContextPtr rmesa )
     */
    DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
 
-   if ( rmesa->lastStamp != dPriv->lastStamp ) {
+   if ( rmesa->lastStamp == 0 ||
+	rmesa->lastStamp != dPriv->lastStamp ) {
       radeonUpdatePageFlipping( rmesa );
 
       if (rmesa->glCtx->Color._DrawDestMask == BACK_LEFT_BIT)
@@ -171,21 +178,9 @@ void radeonGetLock( radeonContextPtr rmesa, GLuint flags )
    int i;
 
 
-   while (1) {
-      drmGetLock( rmesa->dri.fd, rmesa->dri.hwContext, flags );
-
-      validate_drawable( rmesa );
-
-      fprintf(stderr, "%s %d\n", __FUNCTION__, rmesa->numClipRects);
-
-      if (rmesa->numClipRects)
-	 break;
-
-      drmUnlock( rmesa->dri.fd, rmesa->dri.hwContext );
-      
-      sleep(10);
-   }
-
+   drmGetLock( rmesa->dri.fd, rmesa->dri.hwContext, flags );
+   
+   validate_drawable( rmesa );
 
    if ( sarea->ctxOwner != rmesa->dri.hwContext ) {
       sarea->ctxOwner = rmesa->dri.hwContext;
@@ -200,23 +195,3 @@ void radeonGetLock( radeonContextPtr rmesa, GLuint flags )
 }
 
 
-extern void __miniglx_release_vt( void );
-
-/* In the current miniglx, cliprects can change while the lock is
- * held...  Probably need to fix this.
- */
-void radeonUnlock( radeonContextPtr rmesa )
-{
-   fprintf(stderr, "%s\n", __FUNCTION__);
-
-   drmUnlock( rmesa->dri.fd, rmesa->dri.hwContext );
-
-   validate_drawable( rmesa );
-
-   /* This only happens if the VT switch was requested inside the
-    * locked region.
-    */
-   if (!rmesa->numClipRects)
-      __miniglx_release_vt();
-      
-}
diff --git a/src/mesa/drivers/dri/radeon/radeon_lock.h b/src/mesa/drivers/dri/radeon/radeon_lock.h
index f8e35369ee..61b74eae11 100644
--- a/src/mesa/drivers/dri/radeon/radeon_lock.h
+++ b/src/mesa/drivers/dri/radeon/radeon_lock.h
@@ -38,7 +38,6 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define __RADEON_LOCK_H__
 
 extern void radeonGetLock( radeonContextPtr rmesa, GLuint flags );
-extern void radeonUnlock( radeonContextPtr rmesa );
 
 /* Turn DEBUG_LOCKING on to find locking conflicts.
  */
@@ -100,13 +99,13 @@ extern int prevLockLine;
 
 /* Unlock the hardware.
  */
-#define UNLOCK_HARDWARE( rmesa )			\
-   do {							\
-      DRM_CAS_RESULT(__ret);				\
-      DRM_CAS( rmesa->dri.hwLock,DRM_LOCK_HELD|rmesa->dri.hwContext,	\
-	      rmesa->dri.hwContext,__ret);		\
-      if (__ret) radeonUnlock( rmesa );		\
-      DEBUG_RESET();					\
+#define UNLOCK_HARDWARE( rmesa )					\
+   do {									\
+      DRM_UNLOCK( rmesa->dri.fd,					\
+		  rmesa->dri.hwLock,					\
+		  rmesa->dri.hwContext );				\
+      DEBUG_RESET();							\
    } while (0)
 
+
 #endif /* __RADEON_LOCK_H__ */
diff --git a/src/mesa/drivers/dri/radeon/radeon_subset_select.c b/src/mesa/drivers/dri/radeon/radeon_subset_select.c
index bb491177bf..c1f3535f53 100644
--- a/src/mesa/drivers/dri/radeon/radeon_subset_select.c
+++ b/src/mesa/drivers/dri/radeon/radeon_subset_select.c
@@ -27,7 +27,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-/* $Id: radeon_subset_select.c,v 1.1.2.5 2003/03/17 21:23:00 keithw Exp $ */
+/* $Id: radeon_subset_select.c,v 1.1.2.6 2003/04/25 11:22:34 keithw Exp $ */
 
 
 #include "glheader.h"
@@ -955,6 +955,105 @@ void radeon_select_Install( GLcontext *ctx )
 
    ctx->Driver.FlushVertices = radeonSelectFlushVertices;
 }
+/*@}*/
+
+
+/**********************************************************************/
+/** \name        Noop mode for operation without focus                */
+/**********************************************************************/
+/*@{*/
+
+
+/**
+ * \brief Process glBegin().
+ *
+ * \param mode primitive.
+ */ 
+static void radeon_noop_Begin(GLenum mode)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+
+   if (mode > GL_POLYGON) {
+      _mesa_error( ctx, GL_INVALID_ENUM, "glBegin" );
+      return;
+   }
+
+   if (ctx->Driver.CurrentExecPrimitive != GL_POLYGON+1) {
+      _mesa_error( ctx, GL_INVALID_OPERATION, "glBegin" );
+      return;
+   }
+
+   if (rmesa->dri.drawable->numClipRects) {
+      radeonVtxfmtInit( ctx );
+      ctx->Exec->Begin( mode );
+      return;
+   }
+
+   fprintf(stderr, "%s\n", __FUNCTION__);
+   ctx->Driver.CurrentExecPrimitive = mode;
+}
+
+/**
+ * \brief Process glEnd().
+ */
+static void radeon_noop_End(void)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ctx->Driver.CurrentExecPrimitive = GL_POLYGON+1;
+}
+
+/**
+ * \brief Discards all arguments.
+ */
+static void radeon_noop_Vertex2f(GLfloat x, GLfloat y)
+{
+}
+
+/**
+ * \brief Discards all arguments.
+ */
+static void radeon_noop_Vertexfv(const GLfloat * v)
+{
+}
+
+/**
+ * \brief Discards all arguments.
+ */
+static void radeon_noop_Vertex3f(GLfloat x, GLfloat y, GLfloat z)
+{
+}
+
+/**
+ * \brief Install the noop callbacks.
+ *
+ * \param ctx GL context.
+ *
+ * Installs the noop callbacks into the glapi table.  These functions
+ * will not attempt to emit any DMA vertices, but will keep internal
+ * GL state uptodate.  Borrows heavily from the select code.
+ */
+static void radeon_noop_Install( GLcontext *ctx )
+{
+   struct _glapi_table *exec = ctx->Exec;
+
+   exec->Color3f = radeon_select_Color3f;
+   exec->Color3fv = radeon_select_Color3fv;
+   exec->Color4f = radeon_select_Color4f;
+   exec->Color4fv = radeon_select_Color4fv;
+   exec->TexCoord2f = radeon_select_TexCoord2f;
+   exec->TexCoord2fv = radeon_select_TexCoord2fv;
+   exec->Vertex2f = radeon_noop_Vertex2f;
+   exec->Vertex2fv = radeon_noop_Vertexfv;
+   exec->Vertex3f = radeon_noop_Vertex3f;
+   exec->Vertex3fv = radeon_noop_Vertexfv;
+   exec->Begin = radeon_noop_Begin;
+   exec->End = radeon_noop_End;
+
+   ctx->Driver.FlushVertices = radeonSelectFlushVertices;
+}
+
+/*@}*/
 
 /**
  * \brief Set rasterization mode.
@@ -962,14 +1061,21 @@ void radeon_select_Install( GLcontext *ctx )
  * \param ctx GL context.
  * \param mode rasterization mode. Supports GL_RENDER or
  *
- * Calls either radeonVtxfmtInit() or radeon_select_Install() according \p mode
- * is GL_RENDER or GL_SELECT.
+ * If mode is GL_RENDER, calls either radeonVtxfmtInit() or
+ * radeon_noop_Install depending on whether the application has focus
+ * (ie a fullscreen-cliprect) or not.  If mode is GL_SELECT, calls
+ * radeon_select_Install().
  */
 static void radeonRenderMode( GLcontext *ctx, GLenum mode )
 {
+   radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
+
    switch (mode) {
    case GL_RENDER:
-      radeonVtxfmtInit( ctx );
+      if (rmesa->dri.drawable->numClipRects) 
+	 radeonVtxfmtInit( ctx );
+      else
+	 radeon_noop_Install( ctx );
       break;
    case GL_SELECT:
       radeon_select_Install( ctx );
diff --git a/src/mesa/drivers/dri/radeon/server/radeon_dri.c b/src/mesa/drivers/dri/radeon/server/radeon_dri.c
index af3193d645..91b7aa4c17 100644
--- a/src/mesa/drivers/dri/radeon/server/radeon_dri.c
+++ b/src/mesa/drivers/dri/radeon/server/radeon_dri.c
@@ -161,17 +161,16 @@ static void RADEONEngineReset( struct MiniGLXDisplayRec *dpy )
  * \brief Restore the drawing engine.
  *
  * \param dpy display handle
- * \param info driver private data.
  *
  * Resets the graphics card and sets initial values for several registers of
  * the card's drawing engine.
+ *
+ * Turns on the radeon command processor engine (ie: the ringbuffer).
  */
-static void RADEONEngineRestore( struct MiniGLXDisplayRec *dpy,
-				 RADEONInfoPtr info )
-
+static int RADEONEngineRestore( struct MiniGLXDisplayRec *dpy )
 {
    unsigned char *RADEONMMIO = dpy->MMIOAddress;
-   int pitch64, datatype, dp_gui_master_cntl;
+   int pitch64, datatype, dp_gui_master_cntl, err;
 
    OUTREG(RADEON_RB3D_CNTL, 0);
    RADEONEngineReset( dpy );
@@ -179,7 +178,7 @@ static void RADEONEngineRestore( struct MiniGLXDisplayRec *dpy,
    switch (dpy->bpp) {
    case 16: datatype = 4; break;
    case 32: datatype = 6; break;
-   default: return;
+   default: return 0;
    }
 
    dp_gui_master_cntl =
@@ -216,6 +215,43 @@ static void RADEONEngineRestore( struct MiniGLXDisplayRec *dpy,
 
 /*    RADEONWaitForIdleMMIO(dpy); */
    usleep(100); 
+
+
+   /* Initialize and start the CP if required */
+   if ((err = drmCommandNone(dpy->drmFD, DRM_RADEON_CP_START)) != 0) {
+      fprintf(stderr, "%s: CP start %d\n", __FUNCTION__, err);
+      return 0;
+   }
+
+   return True;
+}
+
+
+/**
+ * \brief Shutdown the drawing engine.
+ *
+ * \param dpy display handle
+ *
+ * Turns off the command processor engine & restores the graphics card
+ * to a state that fbdev understands.
+ */
+static int RADEONEngineShutdown( struct MiniGLXDisplayRec *dpy )
+{
+   int err;
+
+   /* Idle the CP engine */
+   if ((err = drmCommandNone(dpy->drmFD, DRM_RADEON_CP_IDLE)) != 0) {
+      fprintf(stderr, "%s: CP idle %d\n", __FUNCTION__, err);
+      return 0;
+   }
+
+   /* Stop the CP */
+   if ((err = drmCommandNone(dpy->drmFD, DRM_RADEON_CP_STOP)) != 0) {
+      fprintf(stderr, "%s: CP stop %d\n", __FUNCTION__, err);
+      return 0;
+   }
+
+   return True;
 }
 
 /**
@@ -650,36 +686,6 @@ static int RADEONMemoryInit( struct MiniGLXDisplayRec *dpy, RADEONInfoPtr info )
    return 1;
 } 
 
-static void print_client_msg(   RADEONDRIPtr   pRADEONDRI )
-{
-   fprintf(stderr, "deviceID 0x%x\n", pRADEONDRI->deviceID);
-   fprintf(stderr, "width 0x%x\n", pRADEONDRI->width);
-   fprintf(stderr, "height 0x%x\n", pRADEONDRI->height);
-   fprintf(stderr, "depth 0x%x\n", pRADEONDRI->depth);
-   fprintf(stderr, "bpp 0x%x\n", pRADEONDRI->bpp);
-   fprintf(stderr, "IsPCI 0x%x\n", pRADEONDRI->IsPCI);
-   fprintf(stderr, "AGPMode 0x%x\n", pRADEONDRI->AGPMode);
-   fprintf(stderr, "frontOffset 0x%x\n", pRADEONDRI->frontOffset);
-   fprintf(stderr, "frontPitch 0x%x\n", pRADEONDRI->frontPitch);
-   fprintf(stderr, "backOffset 0x%x\n", pRADEONDRI->backOffset);
-   fprintf(stderr, "backPitch 0x%x\n", pRADEONDRI->backPitch);
-   fprintf(stderr, "depthOffset 0x%x\n", pRADEONDRI->depthOffset);
-   fprintf(stderr, "depthPitch 0x%x\n", pRADEONDRI->depthPitch);
-   fprintf(stderr, "textureOffset 0x%x\n", pRADEONDRI->textureOffset);
-   fprintf(stderr, "textureSize 0x%x\n", pRADEONDRI->textureSize);
-   fprintf(stderr, "log2TexGran 0x%x\n", pRADEONDRI->log2TexGran);
-   fprintf(stderr, "registerHandle 0x%x\n", (unsigned)pRADEONDRI->registerHandle);
-   fprintf(stderr, "registerSize 0x%x\n", pRADEONDRI->registerSize);
-   fprintf(stderr, "statusHandle 0x%x\n", (unsigned)pRADEONDRI->statusHandle);
-   fprintf(stderr, "statusSize 0x%x\n", pRADEONDRI->statusSize);
-   fprintf(stderr, "agpTexHandle 0x%x\n", (unsigned)pRADEONDRI->agpTexHandle);
-   fprintf(stderr, "agpTexMapSize 0x%x\n", pRADEONDRI->agpTexMapSize);
-   fprintf(stderr, "log2AGPTexGran 0x%x\n", pRADEONDRI->log2AGPTexGran);
-   fprintf(stderr, "agpTexOffset 0x%x\n", pRADEONDRI->agpTexOffset);
-   fprintf(stderr, "sarea_priv_offset 0x%x\n", pRADEONDRI->sarea_priv_offset);
-}
-
-
 
 
 /**
@@ -703,7 +709,6 @@ static int RADEONScreenInit( struct MiniGLXDisplayRec *dpy, RADEONInfoPtr info )
 {
    RADEONDRIPtr   pRADEONDRI;
    int err;
-   unsigned int serverContext;	
 
    usleep(100);
    assert(!dpy->IsClient);
@@ -822,24 +827,24 @@ static int RADEONScreenInit( struct MiniGLXDisplayRec *dpy, RADEONInfoPtr info )
    /* Create a 'server' context so we can grab the lock for
     * initialization ioctls.
     */
-   if ((err = drmCreateContext(dpy->drmFD, &serverContext)) != 0) {
+   if ((err = drmCreateContext(dpy->drmFD, &dpy->serverContext)) != 0) {
       fprintf(stderr, "%s: drmCreateContext failed %d\n", __FUNCTION__, err);
       return 0;
    }
 
-   DRM_LOCK(dpy->drmFD, dpy->pSAREA, serverContext, 0); 
+   DRM_LOCK(dpy->drmFD, dpy->pSAREA, dpy->serverContext, 0); 
 
    /* Initialize the kernel data structures */
    if (!RADEONDRIKernelInit(dpy, info)) {
       fprintf(stderr, "RADEONDRIKernelInit failed\n");
-      DRM_UNLOCK(dpy->drmFD, dpy->pSAREA, serverContext);
+      DRM_UNLOCK(dpy->drmFD, dpy->pSAREA, dpy->serverContext);
       return 0;
    }
 
    /* Initialize the vertex buffers list */
    if (!RADEONDRIBufInit(dpy, info)) {
       fprintf(stderr, "RADEONDRIBufInit failed\n");
-      DRM_UNLOCK(dpy->drmFD, dpy->pSAREA, serverContext);
+      DRM_UNLOCK(dpy->drmFD, dpy->pSAREA, dpy->serverContext);
       return 0;
    }
 
@@ -849,12 +854,9 @@ static int RADEONScreenInit( struct MiniGLXDisplayRec *dpy, RADEONInfoPtr info )
    /* Initialize kernel agp memory manager */
    RADEONDRIAgpHeapInit(dpy, info);
 
-   RADEONEngineRestore( dpy, info );
-
-   /* Initialize and start the CP if required */
-   if ((err = drmCommandNone(dpy->drmFD, DRM_RADEON_CP_START)) != 0) {
-      fprintf(stderr, "%s: CP start %d\n", __FUNCTION__, err);
-      DRM_UNLOCK(dpy->drmFD, dpy->pSAREA, serverContext);
+   fprintf(stderr, "calling RADEONEngineRestore from %s\n", __FUNCTION__);
+   if (!RADEONEngineRestore( dpy )) {
+      DRM_UNLOCK(dpy->drmFD, dpy->pSAREA, dpy->serverContext);
       return 0;
    }
 
@@ -882,7 +884,7 @@ static int RADEONScreenInit( struct MiniGLXDisplayRec *dpy, RADEONInfoPtr info )
 
 
    /* Can release the lock now */
-   DRM_UNLOCK(dpy->drmFD, dpy->pSAREA, serverContext);
+   DRM_UNLOCK(dpy->drmFD, dpy->pSAREA, dpy->serverContext);
 
    /* This is the struct passed to radeon_dri.so for its initialization */
    dpy->driverClientMsg = malloc(sizeof(RADEONDRIRec));
@@ -914,8 +916,6 @@ static int RADEONScreenInit( struct MiniGLXDisplayRec *dpy, RADEONInfoPtr info )
    pRADEONDRI->agpTexOffset      = info->agpTexStart;
    pRADEONDRI->sarea_priv_offset = sizeof(XF86DRISAREARec);
 
-   print_client_msg( pRADEONDRI );
-
    return 1;
 }
 
@@ -1202,46 +1202,6 @@ static void radeonHaltFBDev( struct MiniGLXDisplayRec *dpy )
 }
 
 
-/**
- * \brief A VT release or aquire signal has been received, and
- * requires some action.  We deal with loosing the VT by setting the
- * cliprects to zero and emitting an event to the application.  
- */
-static int radeonVTSwitchHandler( struct MiniGLXDisplayRec *dpy, int have_vt )
-{
-   int *lock = (int *)dpy->pSAREA;
-   int old, new;
-   DRM_CAS_RESULT(ret);
-   GLXDrawable draw;
-   __DRIdrawable *pdraw;
-   __DRIdrawablePrivate *pdp;
-
-   /* Indicate cliprects have changed
-    */
-   draw = dpy->TheWindow;
-   if (!draw) return 1;
-   pdraw = &draw->driDrawable;
-   if (!pdraw) return 1;
-   pdp = (__DRIdrawablePrivate *) pdraw->private;
-   if (!pdp) return 1;
-   pdp->lastStamp++;
-   pdp->numClipRects = have_vt ? 1 : 0;
-
-   /* Mark the lock contended.
-    */
-   if (!dpy->pSAREA) return 0;
-   do {
-      old = *(int *)dpy->pSAREA;
-      new = old | _DRM_LOCK_CONT;
-      DRM_CAS( lock, old, new, ret );
-      fprintf(stderr, "old %x new %x\n", old, new );
-   } while (ret);
-
-   if (have_vt)
-      return !(old & _DRM_LOCK_HELD);
-   else
-      return 1;
-}
 
 /**
  * \brief Exported driver interface for Mini GLX.
@@ -1254,5 +1214,6 @@ struct MiniGLXDriverRec __driMiniGLXDriver = {
    radeonPostValidateMode,
    radeonInitFBDev,
    radeonHaltFBDev,
-   radeonVTSwitchHandler
+   RADEONEngineShutdown,
+   RADEONEngineRestore
 };
diff --git a/src/miniglx/dri_util.c b/src/miniglx/dri_util.c
index 994f16b177..2a3c2000ce 100644
--- a/src/miniglx/dri_util.c
+++ b/src/miniglx/dri_util.c
@@ -22,6 +22,8 @@
 #include <linux/fb.h>
 #include "GL/miniglx.h"
 #include "miniglxP.h"
+#include <linux/vt.h>
+#include <sys/ioctl.h>
 
 
 #include "sarea.h"
@@ -282,8 +284,12 @@ static Bool driBindContext(Display *dpy, int scrn,
  */
 void __driUtilUpdateDrawableInfo(__DRIdrawablePrivate *pdp)
 {
-   fprintf(stderr, "%s\n", __FUNCTION__);
-   /* nothing to do */
+   __DRIscreenPrivate *psp = pdp->driScreenPriv;
+
+   pdp->numClipRects = psp->pSAREA->drawableTable[pdp->index].flags ? 1 : 0;
+   pdp->lastStamp = *(pdp->pStamp);
+
+   fprintf(stderr, "%s: %d cliprects\n", __FUNCTION__, pdp->numClipRects);
 }
 
 
@@ -362,11 +368,10 @@ static void *driCreateDrawable(Display *dpy, int scrn,
 	return NULL;
     }
 
+    pdp->index = dpy->clientID;
     pdp->draw = draw;
     pdp->refcount = 0;
-    pdp->pStamp = &pdp->lastStamp;
-    pdp->lastStamp = 1;
-    pdp->index = 0;
+    pdp->lastStamp = -1;
     pdp->numBackClipRects = 0;
     pdp->pBackClipRects = NULL;
     pdp->display = dpy;
@@ -411,6 +416,12 @@ static void *driCreateDrawable(Display *dpy, int scrn,
     pdraw->swapBuffers = driSwapBuffers;  /* called by glXSwapBuffers() */
     pdp->swapBuffers = psp->DriverAPI.SwapBuffers;
 
+    fprintf(stderr, "%s index: %d stamp: %d\n",
+	    __FUNCTION__, pdp->index, 
+	    psp->pSAREA->drawableTable[pdp->index].stamp);
+
+    pdp->pStamp = &(psp->pSAREA->drawableTable[pdp->index].stamp);
+    __driUtilUpdateDrawableInfo( pdp );
     return (void *) pdp;
 }
 
@@ -790,4 +801,7 @@ __driUtilInitScreen( Display *dpy, int scrn, __DRIscreen *psc )
     psc->getDrawable    = driGetDrawable;
 }
 
+
+
+
 /*@}*/
diff --git a/src/miniglx/miniglx.c b/src/miniglx/miniglx.c
index 2b095f4140..a03978e81d 100644
--- a/src/miniglx/miniglx.c
+++ b/src/miniglx/miniglx.c
@@ -22,7 +22,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-/* $Id: miniglx.c,v 1.1.4.51 2003/04/17 15:46:42 keithw Exp $ */
+/* $Id: miniglx.c,v 1.1.4.52 2003/04/25 11:22:36 keithw Exp $ */
 
 
 /**
@@ -127,73 +127,26 @@ static GLXContext CurrentContext = NULL;
 
 
 
-/* Called from signal handler context, runs atomically wrt
- * XCheckWindowEvent.
- */
-static void queue_event( Display *dpy, int aquire )
-{
-   dpy->haveVT = aquire;
-   dpy->aquireVTCount += aquire;
-   dpy->releaseVTCount += !aquire;
-}
-
 static Display *SignalDisplay = 0;
 
 static void SwitchVT(int sig)
 {
    fprintf(stderr, "SwitchVT %d dpy %p\n", sig, SignalDisplay);
 
-   if (!SignalDisplay) {
-      fprintf(stderr, "No display!\n");
-      return;
-   }
-
-   switch( sig )
-   {
-   case SIGUSR1:                                /* vt has been released */
-      if (SignalDisplay->driver &&
-	  !SignalDisplay->driver->handleVTSwitch( SignalDisplay, 0 ))
-	 return;
-      if (!SignalDisplay->haveVT) {
-	 fprintf(stderr, "%s: Don't have VT\n", __FUNCTION__);
-	 return;
-      }
-      __miniglx_release_vt();
-      break;
-   case SIGUSR2:                                /* vt has been acquired */
-      ioctl( SignalDisplay->ConsoleFD, VT_RELDISP, VT_ACTIVATE );
-      sleep(1);
-
-      if (SignalDisplay->driver &&
-	  !SignalDisplay->driver->handleVTSwitch( SignalDisplay, 1 ))
-	 return;
-
-      if (SignalDisplay->haveVT) {
-	 fprintf(stderr, "%s: Already have VT\n", __FUNCTION__);
-	 return;
+   if (SignalDisplay) {
+      SignalDisplay->vtSignalFlag = 1;
+      switch( sig )
+      {
+      case SIGUSR1:                                /* vt has been released */
+	 SignalDisplay->haveVT = 0;
+	 break;
+      case SIGUSR2:                                /* vt has been acquired */
+	 SignalDisplay->haveVT = 1;
+	 break;
       }
-
-      queue_event( SignalDisplay, 1 );
-      break;
    }
 }
 
-void __miniglx_release_vt( void )
-{
-   if (!SignalDisplay)
-      return;
-
-   if (!SignalDisplay->haveVT) {
-      fprintf(stderr, "%s: Don't have VT\n", __FUNCTION__);
-      return;
-   }
-
-   sleep(1);
-   ioctl( SignalDisplay->ConsoleFD, VT_RELDISP, 1 ); 
-   queue_event( SignalDisplay, 0 );
-}
-
-
 /**********************************************************************/
 /** \name Framebuffer device functions                                */
 /**********************************************************************/
diff --git a/src/miniglx/miniglxP.h b/src/miniglx/miniglxP.h
index 052d896fd9..bbee5d6ae4 100644
--- a/src/miniglx/miniglxP.h
+++ b/src/miniglx/miniglxP.h
@@ -206,10 +206,16 @@ struct MiniGLXDriverRec {
     */
    void (*haltFBDev)( struct MiniGLXDisplayRec *dpy );
 
+
    /**
-    * \brief Handle VT switch events.
+    * \brief Idle and shutdown hardware in preparation for a vt switch.
     */
-   int (*handleVTSwitch)( struct MiniGLXDisplayRec *dpy, int have_vt );
+   int (*shutdownHardware)(  struct MiniGLXDisplayRec *dpy );
+
+   /**
+    * \brief Restore hardware state after regaining the vt.
+    */
+   int (*restoreHardware)(  struct MiniGLXDisplayRec *dpy );
 };
 
 
@@ -316,22 +322,18 @@ struct MiniGLXDisplayRec {
    int ConsoleFD;        /**< \brief console TTY device file descriptor */
    int FrameBufferFD;    /**< \brief framebuffer device file descriptor */
    caddr_t FrameBuffer;  /**< \brief start of the mmap'd framebuffer */
-/*   int FrameBufferSize; */  /**< \brief size of the mmap'd framebuffer in bytes */
    caddr_t MMIOAddress;  /**< \brief start of the mmap'd MMIO region */
    int MMIOSize;         /**< \brief size of the mmap'd MMIO region in bytes */
    int NumWindows;       /**< \brief number of open windows */
    Window TheWindow;     /**< \brief open window - only allow one window for now */
    int rotateMode;
 
-   int haveVT;
-   int aquireVTCount;
-   int releaseVTCount;
-   int exposeNotifyCount;
-   int mapNotifyCount;
-   int unmapNotifyCount;
+
+   volatile int vtSignalFlag, haveVT;
+   int hwActive;
 
 
-   int IsClient;
+   int IsClient, clientID;
    int nrFds;
    struct MiniGLXConnection *fd;
 
@@ -384,6 +386,13 @@ struct MiniGLXDisplayRec {
    /*@}*/
 
 
+   /**
+    * \name Client configuration details
+    *
+    * These are computed on the server and sent to clients as part of
+    * the initial handshaking.
+    */
+   /*@{*/
    struct {
       unsigned long hSAREA;
       int SAREASize;
@@ -394,6 +403,7 @@ struct MiniGLXDisplayRec {
       int virtualWidth;
       int virtualHeight;
    } shared;
+   /*@}*/
       
 
    /**
@@ -401,7 +411,8 @@ struct MiniGLXDisplayRec {
     */
    /*@{*/
    int drmFD;  /**< \brief DRM device file descriptor */
-   void *pSAREA;
+   struct _XF86DRISAREA *pSAREA;
+   unsigned int serverContext;	/**< \brief DRM context only active on server */
    /*@}*/
 
    /**
diff --git a/src/miniglx/miniglx_events.c b/src/miniglx/miniglx_events.c
index 2e2e7d7c5e..6afa9be277 100644
--- a/src/miniglx/miniglx_events.c
+++ b/src/miniglx/miniglx_events.c
@@ -22,7 +22,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-/* $Id: miniglx_events.c,v 1.1.2.3 2003/04/22 14:29:53 keithw Exp $ */
+/* $Id: miniglx_events.c,v 1.1.2.4 2003/04/25 11:22:36 keithw Exp $ */
 
 
 /**
@@ -62,7 +62,8 @@
 
 #include "miniglxP.h"
 
-#include "glapi.h"
+#include "xf86drm.h"
+#include "sarea.h"
 
 #define MINIGLX_FIFO_NAME "/tmp/miniglx.fifo"
 
@@ -95,7 +96,7 @@ static XEvent *queue_event( Display *dpy )
 static int dequeue_event( Display *dpy, XEvent *event_return )
 {
    if (dpy->eventqueue.tail == dpy->eventqueue.head) {
-      fprintf(stderr, "dequeue_event: queue empty\n");
+/*       fprintf(stderr, "dequeue_event: queue empty\n"); */
       return False;
    }
    else {
@@ -196,6 +197,12 @@ static int welcome_message_part( Display *dpy, int i, void **msg, int sz )
 static int welcome_message( Display *dpy, int i )
 {
    void *tmp = &dpy->shared;
+   int *clientid = dpy->IsClient ? &dpy->clientID : &i;
+   
+   if (!welcome_message_part( dpy, i, (void **)&clientid, sizeof(*clientid)))
+      return False;
+
+   fprintf(stderr, "**** CLIENT ID: %d\n", *clientid);
 
    if (!welcome_message_part( dpy, i, &tmp, sizeof(dpy->shared)))
       return False;
@@ -261,133 +268,166 @@ static int handle_new_client( Display *dpy )
 static int
 handle_fifo_read( Display *dpy, int i )
 {
-   char id = dpy->fd[i].readbuf[0];
-   XEvent *er;
-   int count = 1;
-
-   if (dpy->IsClient) {
-      switch (id) {
-	 /* The server has called 'XMapWindow' on a client window */
-      case _YouveGotFocus:
-	 fprintf(stderr, "_YouveGotFocus\n");
-	 er = queue_event(dpy);
-	 if (!er) return False;
-	 er->xmap.type = MapNotify;
-	 er->xmap.serial = 0;
-	 er->xmap.send_event = False;
-	 er->xmap.display = dpy;
-	 er->xmap.event = dpy->TheWindow;
-	 er->xmap.window = dpy->TheWindow;
-	 er->xmap.override_redirect = False;
-	 break;
-
-	 /* The server has called 'XMapWindow' or 'X???'  on a client
-	  * window */
-      case _RepaintPlease:
-	 fprintf(stderr, "_RepaintPlease\n");
-	 er = queue_event(dpy);
-	 if (!er) return False;
-	 er->xexpose.type = Expose;
-	 er->xexpose.serial = 0;
-	 er->xexpose.send_event = False;
-	 er->xexpose.display = dpy;
-	 er->xexpose.window = dpy->TheWindow;
-	 if (dpy->rotateMode) {
-	    er->xexpose.x = dpy->TheWindow->y;
-	    er->xexpose.y = dpy->TheWindow->x;
-	    er->xexpose.width = dpy->TheWindow->h;
-	    er->xexpose.height = dpy->TheWindow->w;
-	 }
-	 else {
-	    er->xexpose.x = dpy->TheWindow->x;
-	    er->xexpose.y = dpy->TheWindow->y;
-	    er->xexpose.width = dpy->TheWindow->w;
-	    er->xexpose.height = dpy->TheWindow->h;
-	 }
-	 er->xexpose.count = 0;
-	 break;
-
-	 /* The server has called 'XUnmapWindow' on a client window */
-      case _YouveLostFocus:
-	 fprintf(stderr, "_YouveLostFocus\n");
-	 er = queue_event(dpy);
-	 if (!er) return False;
-	 er->xunmap.type = UnmapNotify;
-	 er->xunmap.serial = 0;
-	 er->xunmap.send_event = False;
-	 er->xunmap.display = dpy;
-	 er->xunmap.event = dpy->TheWindow;
-	 er->xunmap.window = dpy->TheWindow;
-	 er->xunmap.from_configure = False;
-	 break;
+   while (dpy->fd[i].readbuf_count) {
+      char id = dpy->fd[i].readbuf[0];
+      XEvent *er;
+      int count = 1;
+
+      if (dpy->IsClient) {
+	 switch (id) {
+	    /* The server has called 'XMapWindow' on a client window */
+	 case _YouveGotFocus:
+	    fprintf(stderr, "_YouveGotFocus\n");
+	    er = queue_event(dpy);
+	    if (!er) return False;
+	    er->xmap.type = MapNotify;
+	    er->xmap.serial = 0;
+	    er->xmap.send_event = False;
+	    er->xmap.display = dpy;
+	    er->xmap.event = dpy->TheWindow;
+	    er->xmap.window = dpy->TheWindow;
+	    er->xmap.override_redirect = False;
+	    break;
+
+	    /* The server has called 'XMapWindow' or 'X???'  on a client
+	     * window */
+	 case _RepaintPlease:
+	    fprintf(stderr, "_RepaintPlease\n");
+	    er = queue_event(dpy);
+	    if (!er) return False;
+	    er->xexpose.type = Expose;
+	    er->xexpose.serial = 0;
+	    er->xexpose.send_event = False;
+	    er->xexpose.display = dpy;
+	    er->xexpose.window = dpy->TheWindow;
+	    if (dpy->rotateMode) {
+	       er->xexpose.x = dpy->TheWindow->y;
+	       er->xexpose.y = dpy->TheWindow->x;
+	       er->xexpose.width = dpy->TheWindow->h;
+	       er->xexpose.height = dpy->TheWindow->w;
+	    }
+	    else {
+	       er->xexpose.x = dpy->TheWindow->x;
+	       er->xexpose.y = dpy->TheWindow->y;
+	       er->xexpose.width = dpy->TheWindow->w;
+	       er->xexpose.height = dpy->TheWindow->h;
+	    }
+	    er->xexpose.count = 0;
+	    break;
+
+	    /* The server has called 'XUnmapWindow' on a client window.
+	     *
+	     * Need to set lock contended and adjust cliprects (or the
+	     * server does).
+	     */
+	 case _YouveLostFocus:
+	    fprintf(stderr, "_YouveLostFocus\n");
+	    er = queue_event(dpy);
+	    if (!er) return False;
+	    er->xunmap.type = UnmapNotify;
+	    er->xunmap.serial = 0;
+	    er->xunmap.send_event = False;
+	    er->xunmap.display = dpy;
+	    er->xunmap.event = dpy->TheWindow;
+	    er->xunmap.window = dpy->TheWindow;
+	    er->xunmap.from_configure = False;
+	    break;
 	 
-      default:
-	 fprintf(stderr, "Client received unhandled message type %d\n", id);
-	 shut_fd(dpy, i);		/* Actually shuts down the client */
-	 return False;
+	 default:
+	    fprintf(stderr, "Client received unhandled message type %d\n", id);
+	    shut_fd(dpy, i);		/* Actually shuts down the client */
+	    return False;
+	 }
       }
-   }
-   else {
-      switch (id) {
-	 /* Lets the server know that the client is ready to render
-	  * (having called 'XMapWindow' locally).
-	  */
-      case _CanIHaveFocus:	 
-	 fprintf(stderr, "_CanIHaveFocus\n");
-	 er = queue_event(dpy);
-	 if (!er) return False;
-	 er->xmaprequest.type = MapRequest;
-	 er->xmaprequest.serial = 0;
-	 er->xmaprequest.send_event = False;
-	 er->xmaprequest.display = dpy;
-	 er->xmaprequest.parent = 0;
-	 er->xmaprequest.window = (Window)i;
-	 fprintf(stderr, "queued MapRequest\n");
-	 break;
-
-	 /* Both _YouveLostFocus and _IDontWantFocus generate unmap
-	  * events.  The idea is that _YouveLostFocus lets the client
-	  * know that it has had focus revoked by the server, whereas
-	  * _IDontWantFocus lets the server know that the client has
-	  * unmapped its own window.
-	  */
-      case _IDontWantFocus:
-	 fprintf(stderr, "_IDontWantFocus\n");
-	 er = queue_event(dpy);
-	 if (!er) return False;
-	 er->xunmap.type = UnmapNotify;
-	 er->xunmap.serial = 0;
-	 er->xunmap.send_event = False;
-	 er->xunmap.display = dpy;
-	 er->xunmap.event = (Window)i;
-	 er->xunmap.window = (Window)i;
-	 er->xunmap.from_configure = False;
-	 break;
-
-      default:
-	 fprintf(stderr, "Server received unhandled message type %d\n", id);
-	 shut_fd(dpy, i);		/* Generates DestroyNotify event */
-	 return False;
+      else {
+	 switch (id) {
+	    /* Lets the server know that the client is ready to render
+	     * (having called 'XMapWindow' locally).
+	     */
+	 case _CanIHaveFocus:	 
+	    fprintf(stderr, "_CanIHaveFocus\n");
+	    er = queue_event(dpy);
+	    if (!er) return False;
+	    er->xmaprequest.type = MapRequest;
+	    er->xmaprequest.serial = 0;
+	    er->xmaprequest.send_event = False;
+	    er->xmaprequest.display = dpy;
+	    er->xmaprequest.parent = 0;
+	    er->xmaprequest.window = (Window)i;
+	    fprintf(stderr, "queued MapRequest\n");
+	    break;
+
+	    /* Both _YouveLostFocus and _IDontWantFocus generate unmap
+	     * events.  The idea is that _YouveLostFocus lets the client
+	     * know that it has had focus revoked by the server, whereas
+	     * _IDontWantFocus lets the server know that the client has
+	     * unmapped its own window.
+	     */
+	 case _IDontWantFocus:
+	    fprintf(stderr, "_IDontWantFocus\n");
+	    er = queue_event(dpy);
+	    if (!er) return False;
+	    er->xunmap.type = UnmapNotify;
+	    er->xunmap.serial = 0;
+	    er->xunmap.send_event = False;
+	    er->xunmap.display = dpy;
+	    er->xunmap.event = (Window)i;
+	    er->xunmap.window = (Window)i;
+	    er->xunmap.from_configure = False;
+	    break;
+
+	 default:
+	    fprintf(stderr, "Server received unhandled message type %d\n", id);
+	    shut_fd(dpy, i);		/* Generates DestroyNotify event */
+	    return False;
+	 }
       }
-   }
 
-   dpy->fd[i].readbuf_count -= count;
+      dpy->fd[i].readbuf_count -= count;
 
-   /* This probably never happens, but just in case: */
-   if (dpy->fd[i].readbuf_count) {
-      fprintf(stderr, "count: %d memmove %p %p %d\n", count,
-	      dpy->fd[i].readbuf + count,
-	      dpy->fd[i].readbuf,
-	      dpy->fd[i].readbuf_count);
+      if (dpy->fd[i].readbuf_count) {
+	 fprintf(stderr, "count: %d memmove %p %p %d\n", count,
+		 dpy->fd[i].readbuf,
+		 dpy->fd[i].readbuf + count,
+		 dpy->fd[i].readbuf_count);
 
-      memmove(dpy->fd[i].readbuf + count,
-	      dpy->fd[i].readbuf,
-	      dpy->fd[i].readbuf_count);
+	 memmove(dpy->fd[i].readbuf,
+		 dpy->fd[i].readbuf + count,
+		 dpy->fd[i].readbuf_count);
+      }
    }
 
    return True;
 }
 
+static void __driHandleVtSignals( Display *dpy )
+{
+   dpy->vtSignalFlag = 0;
+
+   if (!dpy->haveVT && dpy->hwActive) {
+      /* Need to get lock and shutdown hardware */
+      DRM_LIGHT_LOCK( dpy->drmFD, dpy->pSAREA, dpy->serverContext ); 
+/*       dpy->driver->shutdownHardware( dpy ); */
+
+      /* Can now give up control of the VT */
+      ioctl( dpy->ConsoleFD, VT_RELDISP, 1 ); 
+      dpy->hwActive = 0;
+   }
+   else if (dpy->haveVT && !dpy->hwActive) {
+      /* Get VT (wait??) */
+      ioctl( dpy->ConsoleFD, VT_RELDISP, VT_ACTIVATE );
+
+      /* restore HW state, release lock */
+/*       dpy->driver->restoreHardware( dpy ); */
+      DRM_UNLOCK( dpy->drmFD, dpy->pSAREA, dpy->serverContext ); 
+      dpy->hwActive = 1;
+   }
+   else 
+      fprintf(stderr, "handle_vt_signals: haveVT %d hwActive %d\n",
+	      dpy->haveVT, dpy->hwActive);
+}
+
+
 #undef max
 #define max(x,y) ((x) > (y) ? (x) : (y))
 
@@ -432,7 +472,14 @@ __miniglx_Select( Display *dpy, int n, fd_set *rfds, fd_set *wfds, fd_set *xfds,
    }
 
 
+   if (dpy->vtSignalFlag)
+      __driHandleVtSignals( dpy );
+
    retval = select( n, rfds, wfds, xfds, tv );
+
+   if (dpy->vtSignalFlag)
+      __driHandleVtSignals( dpy );
+
    if (retval < 0) 
       return retval;
    
@@ -470,8 +517,8 @@ __miniglx_Select( Display *dpy, int n, fd_set *rfds, fd_set *wfds, fd_set *xfds,
 	 else {
 	    dpy->fd[i].writebuf_count -= r;
 	    if (dpy->fd[i].writebuf_count) {
-	       memmove(dpy->fd[i].writebuf + r,
-		       dpy->fd[i].writebuf,
+	       memmove(dpy->fd[i].writebuf,
+		       dpy->fd[i].writebuf + r,
 		       dpy->fd[i].writebuf_count);
 	    }
 	 }
@@ -530,6 +577,8 @@ int __miniglx_open_connections( Display *dpy )
 	 perror("unlink " MINIGLX_FIFO_NAME);
  	 return False; 
       } 
+      
+      umask( 0000 );		/* open to everybody ? */
    } 
 
    /* Create a unix socket -- Note this is *not* a network connection!
@@ -553,8 +602,7 @@ int __miniglx_open_connections( Display *dpy )
 	 return False;
       }
 
-      /* Wait for confirmation from the server, in the form of a _DriverInfo 
-       * message.
+      /* Wait for configuration messages from the server.
        */
       welcome_message( dpy, 0 );
    }
@@ -590,6 +638,29 @@ void __miniglx_close_connections( Display *dpy )
    FREE(dpy->fd);
 }
 
+
+static void set_drawable_flag( Display *dpy, int w, int flag )
+{
+   fprintf(stderr, "%s %d %d\n", __FUNCTION__, w, flag);
+
+   if (dpy->pSAREA) {
+      DRM_LIGHT_LOCK( dpy->drmFD, dpy->pSAREA, dpy->serverContext ); 
+
+      dpy->pSAREA->drawableTable[w].stamp++;
+      dpy->pSAREA->drawableTable[w].flags = flag;
+
+      fprintf(stderr, "%s: stamp now %d\n",
+	      __FUNCTION__,
+	      dpy->pSAREA->drawableTable[w].stamp);
+	      
+
+      DRM_UNLOCK( dpy->drmFD, dpy->pSAREA, dpy->serverContext ); 
+   }
+}
+
+
+
+
 /**
  * \brief Map Window.
  *
@@ -607,6 +678,7 @@ XMapWindow( Display *dpy, Window w )
    if (dpy->IsClient) 
       send_char_msg( dpy, 0, _CanIHaveFocus );
    else {
+      set_drawable_flag( dpy, (int)w, 1 );
       send_char_msg( dpy, (int)w, _YouveGotFocus );
       send_char_msg( dpy, (int)w, _RepaintPlease );
    }
@@ -622,11 +694,18 @@ XMapWindow( Display *dpy, Window w )
  * it is impossible to force them to keep updating their contents & at
  * least this way there is notification that they've stopped.
  * 
+ * The entrypoint is required for the server in any case.
  */
 void
-XUnmapWindow( Display *dpy, Window window )
+XUnmapWindow( Display *dpy, Window w )
 {
-   send_char_msg( dpy, 0,  dpy->IsClient ? _IDontWantFocus : _YouveLostFocus );
+   if (dpy->IsClient) {
+      send_char_msg( dpy, 0, _IDontWantFocus );
+   } 
+   else {
+      set_drawable_flag( dpy, (int)w, 0 );
+      send_char_msg( dpy, (int)w, _YouveLostFocus );
+   }
 }
 
 
-- 
cgit v1.2.3