drm: add support for radeon flags

Add flags to the radeon driver, needed for HyperZ patch.
Signed-off-by: Dave Airlie <airlied@linux.ie>

drivers/char/drm/drmP.h

@@ -557,7 +557,7 @@ typedef struct drm_vbl_sig {
 struct drm_device;
 
 struct drm_driver {
-	int (*preinit)(struct drm_device *);
+	int (*preinit)(struct drm_device *, unsigned long flags);
 	void (*prerelease)(struct drm_device *, struct file *filp);
 	void (*pretakedown)(struct drm_device *);
 	int (*postcleanup)(struct drm_device *);

drivers/char/drm/drm_stub.c

@@ -87,7 +87,7 @@ static int drm_fill_in_dev(drm_device_t *dev, struct pci_dev *pdev, const struct
 	dev->driver = driver;
 	
 	if (dev->driver->preinit)
-		if ((retcode = dev->driver->preinit(dev)))
+		if ((retcode = dev->driver->preinit(dev, ent->driver_data)))
 			goto error_out_unreg;
 
 	if (drm_core_has_AGP(dev)) {

drivers/char/drm/radeon_cp.c

@@ -1266,15 +1266,9 @@ static void radeon_set_pcigart( drm_radeon_private_t *dev_priv, int on )
 
 static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 {
-	drm_radeon_private_t *dev_priv;
+	drm_radeon_private_t *dev_priv = dev->dev_private;;
 	DRM_DEBUG( "\n" );
 
-	dev_priv = drm_alloc( sizeof(drm_radeon_private_t), DRM_MEM_DRIVER );
-	if ( dev_priv == NULL )
-		return DRM_ERR(ENOMEM);
-
-	memset( dev_priv, 0, sizeof(drm_radeon_private_t) );
-
 	dev_priv->is_pci = init->is_pci;
 
 	if ( dev_priv->is_pci && !dev->sg ) {
@@ -1546,6 +1540,7 @@ static int radeon_do_init_cp( drm_device_t *dev, drm_radeon_init_t *init )
 
 int radeon_do_cleanup_cp( drm_device_t *dev )
 {
+	drm_radeon_private_t *dev_priv = dev->dev_private;
 	DRM_DEBUG( "\n" );
 
 	/* Make sure interrupts are disabled here because the uninstall ioctl
@@ -1554,9 +1549,6 @@ int radeon_do_cleanup_cp( drm_device_t *dev )
 	 */
 	if ( dev->irq_enabled ) drm_irq_uninstall(dev);
 
-	if ( dev->dev_private ) {
-		drm_radeon_private_t *dev_priv = dev->dev_private;
-
 #if __OS_HAS_AGP
 	if ( !dev_priv->is_pci ) {
 		if ( dev_priv->cp_ring != NULL )
@@ -1574,10 +1566,8 @@ int radeon_do_cleanup_cp( drm_device_t *dev )
 			DRM_ERROR( "failed to cleanup PCI GART!\n" );
 	}
 	
-		drm_free( dev->dev_private, sizeof(drm_radeon_private_t),
-			   DRM_MEM_DRIVER );
-		dev->dev_private = NULL;
-	}
+	/* only clear to the start of flags */
+	memset(dev_priv, 0, offsetof(drm_radeon_private_t, flags));
 
 	return 0;
 }
@@ -2017,3 +2007,42 @@ int radeon_cp_buffers( DRM_IOCTL_ARGS )
 
 	return ret;
 }
+
+int radeon_driver_preinit(struct drm_device *dev, unsigned long flags)
+{
+	drm_radeon_private_t *dev_priv;
+	int ret = 0;
+
+	dev_priv = drm_alloc(sizeof(drm_radeon_private_t), DRM_MEM_DRIVER);
+	if (dev_priv == NULL)
+		return DRM_ERR(ENOMEM);
+
+	memset(dev_priv, 0, sizeof(drm_radeon_private_t));
+	dev->dev_private = (void *)dev_priv;
+	dev_priv->flags = flags;
+
+	switch (flags & CHIP_FAMILY_MASK) {
+	case CHIP_R100:
+	case CHIP_RV200:
+	case CHIP_R200:
+	case CHIP_R300:
+		dev_priv->flags |= CHIP_HAS_HIERZ;
+		break;
+	default:
+	/* all other chips have no hierarchical z buffer */
+		break;
+	}
+	return ret;
+}
+
+int radeon_driver_postcleanup(struct drm_device *dev)
+{
+	drm_radeon_private_t *dev_priv = dev->dev_private;
+
+	DRM_DEBUG("\n");
+
+	drm_free(dev_priv, sizeof(*dev_priv), DRM_MEM_DRIVER);
+
+	dev->dev_private = NULL;
+	return 0;
+}

drivers/char/drm/radeon_drv.c

@@ -75,6 +75,8 @@ extern int radeon_max_ioctl;
 static struct drm_driver driver = {
 	.driver_features = DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG | DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_IRQ_VBL,
 	.dev_priv_size = sizeof(drm_radeon_buf_priv_t),
+	.preinit = radeon_driver_preinit,
+	.postcleanup = radeon_driver_postcleanup,
 	.prerelease = radeon_driver_prerelease,
 	.pretakedown = radeon_driver_pretakedown,
 	.open_helper = radeon_driver_open_helper,

drivers/char/drm/radeon_drv.h

@@ -117,6 +117,8 @@ enum radeon_chip_flags {
 	CHIP_IS_MOBILITY = 0x00010000UL,
 	CHIP_IS_IGP = 0x00020000UL,
 	CHIP_SINGLE_CRTC = 0x00040000UL,
+	CHIP_IS_AGP = 0x00080000UL,
+	CHIP_HAS_HIERZ = 0x00100000UL, 
 };
 
 typedef struct drm_radeon_freelist {
@@ -235,6 +237,8 @@ typedef struct drm_radeon_private {
    	wait_queue_head_t swi_queue;
    	atomic_t swi_emitted;
 
+	/* starting from here on, data is preserved accross an open */
+	uint32_t flags;		/* see radeon_chip_flags */
 } drm_radeon_private_t;
 
 typedef struct drm_radeon_buf_priv {
@@ -261,6 +265,9 @@ extern int radeon_do_cp_idle( drm_radeon_private_t *dev_priv );
 extern int radeon_do_cleanup_cp( drm_device_t *dev );
 extern int radeon_do_cleanup_pageflip( drm_device_t *dev );
 
+extern int radeon_driver_preinit(struct drm_device *dev, unsigned long flags);
+extern int radeon_driver_postcleanup(struct drm_device *dev);
+
 				/* radeon_state.c */
 extern int radeon_cp_clear( DRM_IOCTL_ARGS );
 extern int radeon_cp_swap( DRM_IOCTL_ARGS );