radeon_hd: Stub out gfx ring boot.

* Tab fix as well

src/add-ons/accelerants/radeon_hd/accelerant.cpp

@@ -300,6 +300,8 @@ radeon_init_accelerant(int device)
 	// Set up data crunching + irq rings
 	radeon_gpu_ring_setup();
 
+	radeon_gpu_ring_boot(RADEON_QUEUE_TYPE_GFX_INDEX);
+
 	TRACE("%s done\n", __func__);
 	return B_OK;
 }

src/add-ons/accelerants/radeon_hd/gpu.cpp

@@ -506,7 +506,7 @@ radeon_gpu_ring_setup()
 	TRACE("%s called\n", __func__);
 
 	// init GFX ring queue
-    gInfo->ringQueue[RADEON_QUEUE_TYPE_GFX_INDEX]
+	gInfo->ringQueue[RADEON_QUEUE_TYPE_GFX_INDEX]
 		= new RingQueue(1024 * 1024, RADEON_QUEUE_TYPE_GFX_INDEX);
 
 	#if 0
@@ -520,6 +520,23 @@ radeon_gpu_ring_setup()
 }
 
 
+status_t
+radeon_gpu_ring_boot(uint32 ringType)
+{
+	TRACE("%s called\n", __func__);
+
+	RingQueue* ring = gInfo->ringQueue[ringType];
+	if (ring == NULL) {
+		ERROR("%s: Specified ring doesn't exist!\n", __func__);
+		return B_ERROR;
+	}
+
+	// TODO: Write initial ring state
+
+	return B_OK;
+}
+
+
 status_t
 radeon_gpu_ss_disable()
 {

src/add-ons/accelerants/radeon_hd/gpu.h

@@ -176,6 +176,7 @@ void radeon_gpu_mc_resume(struct gpu_state *gpuState);
 status_t radeon_gpu_mc_idlewait();
 status_t radeon_gpu_mc_setup();
 status_t radeon_gpu_ring_setup();
+status_t radeon_gpu_ring_boot(uint32 ringType);
 status_t radeon_gpu_ss_disable();