3 files changed, 37 insertions, 10 deletions

diff --git a/shared-core/i915_dma.c b/shared-core/i915_dma.c
index ba8c56ee..d6bb6c8e 100644
--- a/shared-core/i915_dma.c
+++ b/shared-core/i915_dma.c
@@ -434,15 +434,15 @@ static void i915_emit_breadcrumb(drm_device_t *dev)
 
 	dev_priv->sarea_priv->last_enqueue = ++dev_priv->counter;
 
-	if (dev_priv->counter > 0x7FFFFFFFUL)
-		dev_priv->sarea_priv->last_enqueue = dev_priv->counter = 1;
-
 	BEGIN_LP_RING(4);
 	OUT_RING(CMD_STORE_DWORD_IDX);
 	OUT_RING(20);
 	OUT_RING(dev_priv->counter);
 	OUT_RING(0);
 	ADVANCE_LP_RING();
+#ifdef I915_HAVE_FENCE
+	drm_fence_flush_old(dev, dev_priv->counter);
+#endif
 }
 
 static int i915_dispatch_cmdbuffer(drm_device_t * dev,
@@ -565,7 +565,9 @@ static int i915_dispatch_flip(drm_device_t * dev)
 	OUT_RING(dev_priv->counter);
 	OUT_RING(0);
 	ADVANCE_LP_RING();
-
+#ifdef I915_HAVE_FENCE
+	drm_fence_flush_old(dev, dev_priv->counter);
+#endif
 	dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 	return 0;
 }
diff --git a/shared-core/i915_drv.h b/shared-core/i915_drv.h
index a87075b1..475ff474 100644
--- a/shared-core/i915_drv.h
+++ b/shared-core/i915_drv.h
@@ -51,6 +51,10 @@
 #define DRIVER_MINOR		5
 #define DRIVER_PATCHLEVEL	0
 
+#if defined(__linux__)
+#define I915_HAVE_FENCE
+#endif
+
 typedef struct _drm_i915_ring_buffer {
 	int tail_mask;
 	unsigned long Start;
@@ -81,7 +85,7 @@ typedef struct drm_i915_private {
 	drm_dma_handle_t *status_page_dmah;
 	void *hw_status_page;
 	dma_addr_t dma_status_page;
-	unsigned long counter;
+	uint32_t counter;
 
 	int back_offset;
 	int front_offset;
@@ -98,6 +102,14 @@ typedef struct drm_i915_private {
 	struct mem_block *agp_heap;
 	unsigned int sr01, adpa, ppcr, dvob, dvoc, lvds;
 	int vblank_pipe;
+
+#ifdef I915_HAVE_FENCE
+        uint32_t flush_sequence;
+	uint32_t flush_flags;
+	uint32_t flush_pending;
+	uint32_t saved_flush_status;
+#endif
+
 } drm_i915_private_t;
 
 extern drm_ioctl_desc_t i915_ioctls[];
@@ -123,6 +135,7 @@ extern void i915_driver_irq_postinstall(drm_device_t * dev);
 extern void i915_driver_irq_uninstall(drm_device_t * dev);
 extern int i915_vblank_pipe_set(DRM_IOCTL_ARGS);
 extern int i915_vblank_pipe_get(DRM_IOCTL_ARGS);
+extern int i915_emit_irq(drm_device_t * dev);
 
 /* i915_mem.c */
 extern int i915_mem_alloc(DRM_IOCTL_ARGS);
@@ -132,6 +145,13 @@ extern int i915_mem_destroy_heap(DRM_IOCTL_ARGS);
 extern void i915_mem_takedown(struct mem_block **heap);
 extern void i915_mem_release(drm_device_t * dev,
 			     DRMFILE filp, struct mem_block *heap);
+#ifdef I915_HAVE_FENCE
+/* i915_fence.c */
+extern void i915_fence_handler(drm_device_t *dev);
+extern int i915_fence_emit_sequence(drm_device_t *dev, uint32_t *sequence);
+extern void i915_poke_flush(drm_device_t *dev);
+extern void i915_sync_flush(drm_device_t *dev);
+#endif
 
 #define I915_READ(reg)          DRM_READ32(dev_priv->mmio_map, (reg))
 #define I915_WRITE(reg,val)     DRM_WRITE32(dev_priv->mmio_map, (reg), (val))
@@ -191,6 +211,7 @@ extern int i915_wait_ring(drm_device_t * dev, int n, const char *caller);
 #define I915REG_INT_IDENTITY_R	0x020a4
 #define I915REG_INT_MASK_R 	0x020a8
 #define I915REG_INT_ENABLE_R	0x020a0
+#define I915REG_INSTPM	        0x020c0
 
 #define SRX_INDEX		0x3c4
 #define SRX_DATA		0x3c5
@@ -272,6 +293,6 @@ extern int i915_wait_ring(drm_device_t * dev, int n, const char *caller);
 
 #define CMD_OP_DESTBUFFER_INFO	 ((0x3<<29)|(0x1d<<24)|(0x8e<<16)|1)
 
-#define READ_BREADCRUMB(dev_priv)  (((u32*)(dev_priv->hw_status_page))[5])
-
+#define READ_BREADCRUMB(dev_priv)  (((volatile u32*)(dev_priv->hw_status_page))[5])
+#define READ_HWSP(dev_priv, reg)  (((volatile u32*)(dev_priv->hw_status_page))[reg])
 #endif
diff --git a/shared-core/i915_irq.c b/shared-core/i915_irq.c
index 14213b58..08d3140b 100644
--- a/shared-core/i915_irq.c
+++ b/shared-core/i915_irq.c
@@ -56,8 +56,12 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
 
 	dev_priv->sarea_priv->last_dispatch = READ_BREADCRUMB(dev_priv);
 
-	if (temp & USER_INT_FLAG)
+	if (temp & USER_INT_FLAG) {
 		DRM_WAKEUP(&dev_priv->irq_queue);
+#ifdef I915_HAVE_FENCE
+		i915_fence_handler(dev);
+#endif
+	}
 
 	if (temp & (VSYNC_PIPEA_FLAG | VSYNC_PIPEB_FLAG)) {
 		atomic_inc(&dev->vbl_received);
@@ -68,7 +72,7 @@ irqreturn_t i915_driver_irq_handler(DRM_IRQ_ARGS)
 	return IRQ_HANDLED;
 }
 
-static int i915_emit_irq(drm_device_t * dev)
+int i915_emit_irq(drm_device_t * dev)
 {
 	
 	drm_i915_private_t *dev_priv = dev->dev_private;
@@ -260,7 +264,7 @@ void i915_driver_irq_preinstall(drm_device_t * dev)
 {
 	drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
 
-	I915_WRITE16(I915REG_HWSTAM, 0xfffe);
+	I915_WRITE16(I915REG_HWSTAM, 0xeffe);
 	I915_WRITE16(I915REG_INT_MASK_R, 0x0);
 	I915_WRITE16(I915REG_INT_ENABLE_R, 0x0);
 }