DRI CVS merge: make sure to clean up irq and DMA on final close.

drivers/char/drm/gamma.h

@@ -63,6 +63,12 @@
 #define __HAVE_COUNTER9		_DRM_STAT_SPECIAL
 #define __HAVE_COUNTER10	_DRM_STAT_MISSED
 
+/* Driver customization:
+ */
+#define DRIVER_PRETAKEDOWN() do {					\
+	gamma_do_cleanup_dma( dev );					\
+} while (0)
+
 /* DMA customization:
  */
 #define __HAVE_DMA			1

drivers/char/drm/gamma_dma.c

@@ -639,6 +639,14 @@ int gamma_do_cleanup_dma( drm_device_t *dev )
 {
 	DRM_DEBUG( "%s\n", __FUNCTION__ );
 
+#if _HAVE_DMA_IRQ
+	/* Make sure interrupts are disabled here because the uninstall ioctl
+	 * may not have been called from userspace and after dev_private
+	 * is freed, it's too late.
+	 */
+	if ( dev->irq ) DRM(irq_uninstall)(dev);
+#endif
+
 	if ( dev->dev_private ) {
 		drm_gamma_private_t *dev_priv = dev->dev_private;
 
@@ -660,6 +668,8 @@ int gamma_dma_init( struct inode *inode, struct file *filp,
 	drm_device_t *dev = priv->dev;
 	drm_gamma_init_t init;
 
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
 	if ( copy_from_user( &init, (drm_gamma_init_t *)arg, sizeof(init) ) )
 		return -EFAULT;
 
@@ -832,6 +842,8 @@ void DRM(driver_irq_postinstall)( drm_device_t *dev ) {
 void DRM(driver_irq_uninstall)( drm_device_t *dev ) {
 	drm_gamma_private_t *dev_priv =
 				(drm_gamma_private_t *)dev->dev_private;
+	if (!dev_priv)
+		return;
 
 	while(GAMMA_READ(GAMMA_INFIFOSPACE) < 3);
 

drivers/char/drm/i810.h

@@ -89,6 +89,10 @@
 	i810_reclaim_buffers( filp );					\
 } while (0)
 
+#define DRIVER_PRETAKEDOWN() do {					\
+	i810_dma_cleanup( dev );					\
+} while (0)
+
 /* DMA customization:
  */
 #define __HAVE_DMA		1
@@ -104,6 +108,7 @@
 /* Don't need an irq any more.  The template code will make sure that
  * a noop stub is generated for compatibility.
  */
+/* XXX: Add vblank support? */
 #define __HAVE_DMA_IRQ		0
 
 /* Buffer customization:

drivers/char/drm/i810_dma.c

@@ -227,11 +227,19 @@ static int i810_dma_get_buffer(drm_device_t *dev, drm_i810_dma_t *d,
 	return retcode;
 }
 
-static int i810_dma_cleanup(drm_device_t *dev)
+int i810_dma_cleanup(drm_device_t *dev)
 {
 	drm_device_dma_t *dma = dev->dma;
 
-	if(dev->dev_private) {
+#if _HAVE_DMA_IRQ
+	/* Make sure interrupts are disabled here because the uninstall ioctl
+	 * may not have been called from userspace and after dev_private
+	 * is freed, it's too late.
+	 */
+	if (dev->irq) DRM(irq_uninstall)(dev);
+#endif
+
+	if (dev->dev_private) {
 		int i;
 	   	drm_i810_private_t *dev_priv =
 	     		(drm_i810_private_t *) dev->dev_private;

drivers/char/drm/i810_drv.h

@@ -38,8 +38,6 @@ typedef struct drm_i810_buf_priv {
 	int currently_mapped;
 	void *virtual;
 	void *kernel_virtual;
-	int map_count;
-   	struct vm_area_struct *vma;
 } drm_i810_buf_priv_t;
 
 typedef struct _drm_i810_ring_buffer{
@@ -86,6 +84,7 @@ extern int  i810_getbuf(struct inode *inode, struct file *filp,
 			unsigned int cmd, unsigned long arg);
 extern int  i810_dma_init(struct inode *inode, struct file *filp,
 			  unsigned int cmd, unsigned long arg);
+extern int  i810_dma_cleanup(drm_device_t *dev);
 extern int  i810_flush_ioctl(struct inode *inode, struct file *filp,
 			     unsigned int cmd, unsigned long arg);
 extern void i810_reclaim_buffers(struct file *filp);

drivers/char/drm/i830.h

@@ -90,6 +90,10 @@
 	i830_reclaim_buffers( filp );					\
 } while (0)
 
+#define DRIVER_PRETAKEDOWN() do {					\
+	i830_dma_cleanup( dev );					\
+} while (0)
+
 /* DMA customization:
  */
 #define __HAVE_DMA		1
@@ -107,45 +111,17 @@
  * the card, but are subject to subtle interactions between bios,
  * hardware and the driver.
  */
+/* XXX: Add vblank support? */
 #define USE_IRQS 0
 
-
 #if USE_IRQS
 #define __HAVE_DMA_IRQ		1
 #define __HAVE_SHARED_IRQ	1
-
-#define DRIVER_PREINSTALL() do {			\
-	drm_i830_private_t *dev_priv =			\
-		(drm_i830_private_t *)dev->dev_private;	\
-							\
-   	I830_WRITE16( I830REG_HWSTAM, 0xffff );	\
-        I830_WRITE16( I830REG_INT_MASK_R, 0x0 );	\
-      	I830_WRITE16( I830REG_INT_ENABLE_R, 0x0 );	\
-} while (0)
-
-
-#define DRIVER_POSTINSTALL() do {				\
-	drm_i830_private_t *dev_priv =				\
-		(drm_i830_private_t *)dev->dev_private;		\
-   	I830_WRITE16( I830REG_INT_ENABLE_R, 0x2 );		\
-   	atomic_set(&dev_priv->irq_received, 0);			\
-   	atomic_set(&dev_priv->irq_emitted, 0);			\
-	init_waitqueue_head(&dev_priv->irq_queue);		\
-} while (0)
-
-
-/* This gets called too late to be useful: dev_priv has already been
- * freed.
- */
-#define DRIVER_UNINSTALL() do {					\
-} while (0)
-
 #else
 #define __HAVE_DMA_IRQ          0
 #endif
 
 
-
 /* Buffer customization:
  */
 

drivers/char/drm/i830_dma.c

@@ -227,16 +227,24 @@ static int i830_dma_get_buffer(drm_device_t *dev, drm_i830_dma_t *d,
 	return retcode;
 }
 
-static int i830_dma_cleanup(drm_device_t *dev)
+int i830_dma_cleanup(drm_device_t *dev)
 {
 	drm_device_dma_t *dma = dev->dma;
 
-	if(dev->dev_private) {
+#if _HAVE_DMA_IRQ
+	/* Make sure interrupts are disabled here because the uninstall ioctl
+	 * may not have been called from userspace and after dev_private
+	 * is freed, it's too late.
+	 */
+	if (dev->irq) DRM(irq_uninstall)(dev);
+#endif
+
+	if (dev->dev_private) {
 		int i;
 	   	drm_i830_private_t *dev_priv = 
 	     		(drm_i830_private_t *) dev->dev_private;
 	   
-	   	if(dev_priv->ring.virtual_start) {
+	   	if (dev_priv->ring.virtual_start) {
 		   	DRM(ioremapfree)((void *) dev_priv->ring.virtual_start,
 					 dev_priv->ring.Size);
 		}
@@ -248,14 +256,6 @@ static int i830_dma_cleanup(drm_device_t *dev)
 		   	I830_WRITE(0x02080, 0x1ffff000);
 		}
 
-		/* Disable interrupts here because after dev_private
-		 * is freed, it's too late.
-		 */
-		if (dev->irq) {
-			I830_WRITE16( I830REG_INT_MASK_R, 0xffff );
-			I830_WRITE16( I830REG_INT_ENABLE_R, 0x0 );
-		}
-
 	   	DRM(free)(dev->dev_private, sizeof(drm_i830_private_t), 
 			 DRM_MEM_DRIVER);
 	   	dev->dev_private = NULL;

drivers/char/drm/i830_drv.h

@@ -38,8 +38,6 @@ typedef struct drm_i830_buf_priv {
 	int currently_mapped;
 	void *virtual;
 	void *kernel_virtual;
-	int map_count;
-   	struct vm_area_struct *vma;
 } drm_i830_buf_priv_t;
 
 typedef struct _drm_i830_ring_buffer{
@@ -99,6 +97,7 @@ extern int  i830_getbuf(struct inode *inode, struct file *filp,
 			unsigned int cmd, unsigned long arg);
 extern int  i830_dma_init(struct inode *inode, struct file *filp,
 			  unsigned int cmd, unsigned long arg);
+extern int  i830_dma_cleanup(drm_device_t *dev);
 extern int  i830_flush_ioctl(struct inode *inode, struct file *filp,
 			     unsigned int cmd, unsigned long arg);
 extern void i830_reclaim_buffers(struct file *filp);

drivers/char/drm/i830_irq.c

@@ -42,9 +42,9 @@ void DRM(dma_service)(int irq, void *device, struct pt_regs *regs)
    	u16 temp;
 
       	temp = I830_READ16(I830REG_INT_IDENTITY_R);
-	printk("%s: %x\n", __FUNCTION__, temp);
+	DRM_DEBUG("%x\n", temp);
 
-   	if(temp == 0) 
+   	if (temp == 0) 
 		return;
 
 	I830_WRITE16(I830REG_INT_IDENTITY_R, temp); 
@@ -175,3 +175,34 @@ int i830_irq_wait( struct inode *inode, struct file *filp, unsigned int cmd,
 	return i830_wait_irq( dev, irqwait.irq_seq );
 }
 
+
+/* drm_dma.h hooks
+*/
+void DRM(driver_irq_preinstall)( drm_device_t *dev ) {
+	drm_i830_private_t *dev_priv =
+		(drm_i830_private_t *)dev->dev_private;
+
+	I830_WRITE16( I830REG_HWSTAM, 0xffff );
+	I830_WRITE16( I830REG_INT_MASK_R, 0x0 );
+	I830_WRITE16( I830REG_INT_ENABLE_R, 0x0 );
+	atomic_set(&dev_priv->irq_received, 0);
+	atomic_set(&dev_priv->irq_emitted, 0);
+	init_waitqueue_head(&dev_priv->irq_queue);
+}
+
+void DRM(driver_irq_postinstall)( drm_device_t *dev ) {
+	drm_i830_private_t *dev_priv =
+		(drm_i830_private_t *)dev->dev_private;
+
+	I830_WRITE16( I830REG_INT_ENABLE_R, 0x2 );
+}
+
+void DRM(driver_irq_uninstall)( drm_device_t *dev ) {
+	drm_i830_private_t *dev_priv =
+		(drm_i830_private_t *)dev->dev_private;
+	if (!dev_priv)
+		return;
+
+	I830_WRITE16( I830REG_INT_MASK_R, 0xffff );
+	I830_WRITE16( I830REG_INT_ENABLE_R, 0x0 );
+}

drivers/char/drm/mga.h

@@ -72,7 +72,7 @@
 /* Driver customization:
  */
 #define DRIVER_PRETAKEDOWN() do {					\
-	if ( dev->dev_private ) mga_do_cleanup_dma( dev );		\
+	mga_do_cleanup_dma( dev );					\
 } while (0)
 
 /* DMA customization:

drivers/char/drm/mga_dma.c

@@ -639,6 +639,14 @@ int mga_do_cleanup_dma( drm_device_t *dev )
 {
 	DRM_DEBUG( "\n" );
 
+#if _HAVE_DMA_IRQ
+	/* Make sure interrupts are disabled here because the uninstall ioctl
+	 * may not have been called from userspace and after dev_private
+	 * is freed, it's too late.
+	 */
+	if ( dev->irq ) DRM(irq_uninstall)(dev);
+#endif
+
 	if ( dev->dev_private ) {
 		drm_mga_private_t *dev_priv = dev->dev_private;
 
@@ -666,6 +674,8 @@ int mga_dma_init( DRM_IOCTL_ARGS )
 	DRM_DEVICE;
 	drm_mga_init_t init;
 
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
 	DRM_COPY_FROM_USER_IOCTL( init, (drm_mga_init_t *)data, sizeof(init) );
 
 	switch ( init.func ) {

drivers/char/drm/mga_irq.c

@@ -95,8 +95,9 @@ void mga_driver_irq_postinstall( drm_device_t *dev ) {
 void mga_driver_irq_uninstall( drm_device_t *dev ) {
   	drm_mga_private_t *dev_priv = 
 	   (drm_mga_private_t *)dev->dev_private;
-	if ( dev_priv ) {
+	if (!dev_priv)
+		return;
+
 	/* Disable *all* interrupts */
 	MGA_WRITE( MGA_IEN, 0 );
-	}
 }

drivers/char/drm/r128.h

@@ -85,7 +85,7 @@
 } while (0)
 
 #define DRIVER_PRETAKEDOWN() do {					\
-	if ( dev->dev_private ) r128_do_cleanup_cce( dev );		\
+	r128_do_cleanup_cce( dev );					\
 } while (0)
 
 /* DMA customization:

drivers/char/drm/r128_cce.c

@@ -613,6 +613,15 @@ static int r128_do_init_cce( drm_device_t *dev, drm_r128_init_t *init )
 
 int r128_do_cleanup_cce( drm_device_t *dev )
 {
+
+#if _HAVE_DMA_IRQ
+	/* Make sure interrupts are disabled here because the uninstall ioctl
+	 * may not have been called from userspace and after dev_private
+	 * is freed, it's too late.
+	 */
+	if ( dev->irq ) DRM(irq_uninstall)(dev);
+#endif
+
 	if ( dev->dev_private ) {
 		drm_r128_private_t *dev_priv = dev->dev_private;
 
@@ -649,6 +658,8 @@ int r128_cce_init( DRM_IOCTL_ARGS )
 
 	DRM_DEBUG( "\n" );
 
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
 	DRM_COPY_FROM_USER_IOCTL( init, (drm_r128_init_t *)data, sizeof(init) );
 
 	switch ( init.func ) {

drivers/char/drm/r128_irq.c

@@ -95,8 +95,9 @@ void r128_driver_irq_postinstall( drm_device_t *dev ) {
 void r128_driver_irq_uninstall( drm_device_t *dev ) {
   	drm_r128_private_t *dev_priv = 
 	   (drm_r128_private_t *)dev->dev_private;
-	if ( dev_priv ) {
+	if (!dev_priv)
+		return;
+
 	/* Disable *all* interrupts */
 	R128_WRITE( R128_GEN_INT_CNTL, 0 );
-	}
 }

drivers/char/drm/radeon_cp.c

@@ -1266,6 +1266,14 @@ int radeon_do_cleanup_cp( drm_device_t *dev )
 {
 	DRM_DEBUG( "\n" );
 
+#if _HAVE_DMA_IRQ
+	/* Make sure interrupts are disabled here because the uninstall ioctl
+	 * may not have been called from userspace and after dev_private
+	 * is freed, it's too late.
+	 */
+	if ( dev->irq ) DRM(irq_uninstall)(dev);
+#endif
+
 	if ( dev->dev_private ) {
 		drm_radeon_private_t *dev_priv = dev->dev_private;
 
@@ -1298,6 +1306,8 @@ int radeon_cp_init( DRM_IOCTL_ARGS )
 	DRM_DEVICE;
 	drm_radeon_init_t init;
 
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
 	DRM_COPY_FROM_USER_IOCTL( init, (drm_radeon_init_t *)data, sizeof(init) );
 
 	switch ( init.func ) {

drivers/char/drm/radeon_irq.c

@@ -250,8 +250,9 @@ void DRM(driver_irq_postinstall)( drm_device_t *dev ) {
 void DRM(driver_irq_uninstall)( drm_device_t *dev ) {
 	drm_radeon_private_t *dev_priv =
 		(drm_radeon_private_t *)dev->dev_private;
-	if ( dev_priv ) {
+	if (!dev_priv)
+		return;
+
 	/* Disable *all* interrupts */
 	RADEON_WRITE( RADEON_GEN_INT_CNTL, 0 );
-	}
 }