From 208c0779b65242159bbb87153269faef9370670c Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Thu, 2 Jan 2003 18:38:07 +0000
Subject: Make the radeon drm module better at cleaning up after itself if all
 the     clients (particularly the X server) exit without doing so for it.

---
 shared/radeon.h     |  6 ++++++
 shared/radeon_cp.c  | 31 ++++++++++++++++++++++++++++---
 shared/radeon_drv.h |  1 +
 3 files changed, 35 insertions(+), 3 deletions(-)

(limited to 'shared')

diff --git a/shared/radeon.h b/shared/radeon.h
index fe71687a..caf6aee0 100644
--- a/shared/radeon.h
+++ b/shared/radeon.h
@@ -127,6 +127,12 @@
 	}								\
 } while (0)
 
+#define __HAVE_RELEASE 1
+#define DRIVER_RELEASE() do {				\
+	if ( dev->open_count == 1)			\
+                 radeon_do_release( dev );	\
+        } while (0)
+
 /* On unloading the module:
  *    - Free memory heap structure
  *    - Remove mappings made at startup and free dev_private.
diff --git a/shared/radeon_cp.c b/shared/radeon_cp.c
index 7c869c02..02fceced 100644
--- a/shared/radeon_cp.c
+++ b/shared/radeon_cp.c
@@ -1354,6 +1354,9 @@ int radeon_cp_stop( DRM_IOCTL_ARGS )
 
 	DRM_COPY_FROM_USER_IOCTL( stop, (drm_radeon_cp_stop_t *)data, sizeof(stop) );
 
+	if (!dev_priv->cp_running)
+		return 0;
+
 	/* Flush any pending CP commands.  This ensures any outstanding
 	 * commands are exectuted by the engine before we turn it off.
 	 */
@@ -1381,6 +1384,31 @@ int radeon_cp_stop( DRM_IOCTL_ARGS )
 	return 0;
 }
 
+
+void radeon_do_release( drm_device_t *dev )
+{
+	drm_radeon_private_t *dev_priv = dev->dev_private;
+
+	printk("radeon_do_release: %p\n", dev_priv);
+
+	if (dev_priv) {
+		/* Stop the cp */
+		radeon_do_cp_flush( dev_priv );
+		radeon_do_cp_idle( dev_priv );
+		radeon_do_cp_stop( dev_priv );
+		radeon_do_engine_reset( dev );
+
+		/* Disable *all* interrupts */
+		RADEON_WRITE( RADEON_GEN_INT_CNTL, 0 );
+	
+		/* Destroy agp heap ??? */
+/* 		radeon_mem_takedown( &(dev_priv->agp_heap) );		 */
+
+		/* deallocate kernel resources */
+		radeon_do_cleanup_cp( dev );
+	}
+}
+
 /* Just reset the CP ring.  Called as part of an X Server engine reset.
  */
 int radeon_cp_reset( DRM_IOCTL_ARGS )
@@ -1412,9 +1440,6 @@ int radeon_cp_idle( DRM_IOCTL_ARGS )
 
 	LOCK_TEST_WITH_RETURN( dev );
 
-/* 	if (dev->irq)  */
-/* 		radeon_emit_and_wait_irq( dev ); */
-
 	return radeon_do_cp_idle( dev_priv );
 }
 
diff --git a/shared/radeon_drv.h b/shared/radeon_drv.h
index 65f3c926..22c5d04f 100644
--- a/shared/radeon_drv.h
+++ b/shared/radeon_drv.h
@@ -193,6 +193,7 @@ extern int radeon_emit_and_wait_irq(drm_device_t *dev);
 extern int radeon_wait_irq(drm_device_t *dev, int swi_nr);
 extern int radeon_emit_irq(drm_device_t *dev);
 
+extern void radeon_do_release(drm_device_t *dev);
 
 /* Flags for stats.boxes
  */
-- 
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