drm/radeon: make ring rptr and wptr register offsets variable

Every ring seems to have the concept of read and
write pointers. Make the register offset variable
so we can use the functions for different types of rings.

Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 5bf8603..bbe88ec 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -525,8 +525,11 @@
 	struct radeon_bo	*ring_obj;
 	volatile uint32_t	*ring;
 	unsigned		rptr;
+	unsigned		rptr_offs;
+	unsigned		rptr_reg;
 	unsigned		wptr;
 	unsigned		wptr_old;
+	unsigned		wptr_reg;
 	unsigned		ring_size;
 	unsigned		ring_free_dw;
 	int			count_dw;
@@ -602,7 +605,8 @@
 void radeon_ring_unlock_commit(struct radeon_device *rdev, struct radeon_cp *cp);
 void radeon_ring_unlock_undo(struct radeon_device *rdev, struct radeon_cp *cp);
 int radeon_ring_test(struct radeon_device *rdev, struct radeon_cp *cp);
-int radeon_ring_init(struct radeon_device *rdev, struct radeon_cp *cp, unsigned ring_size);
+int radeon_ring_init(struct radeon_device *rdev, struct radeon_cp *cp, unsigned ring_size,
+		     unsigned rptr_offs, unsigned rptr_reg, unsigned wptr_reg);
 void radeon_ring_fini(struct radeon_device *rdev, struct radeon_cp *cp);
 
 
@@ -939,7 +943,6 @@
 	int (*cp_init)(struct radeon_device *rdev, unsigned ring_size);
 	void (*cp_fini)(struct radeon_device *rdev);
 	void (*cp_disable)(struct radeon_device *rdev);
-	void (*cp_commit)(struct radeon_device *rdev, struct radeon_cp *cp);
 	void (*ring_start)(struct radeon_device *rdev);
 	int (*ring_test)(struct radeon_device *rdev, struct radeon_cp *cp);
 	void (*ring_ib_execute)(struct radeon_device *rdev, struct radeon_ib *ib);
@@ -1491,7 +1494,6 @@
 #define radeon_asic_reset(rdev) (rdev)->asic->asic_reset((rdev))
 #define radeon_gart_tlb_flush(rdev) (rdev)->asic->gart_tlb_flush((rdev))
 #define radeon_gart_set_page(rdev, i, p) (rdev)->asic->gart_set_page((rdev), (i), (p))
-#define radeon_cp_commit(rdev, cp) (rdev)->asic->cp_commit((rdev), (cp))
 #define radeon_ring_start(rdev) (rdev)->asic->ring_start((rdev))
 #define radeon_ring_test(rdev, cp) (rdev)->asic->ring_test((rdev), (cp))
 #define radeon_ring_ib_execute(rdev, ib) (rdev)->asic->ring_ib_execute((rdev), (ib))