drm/radeon: remove generic rptr/wptr functions (v2)

Fill in asic family specific versions rather than
using the generic version.  This lets us handle asic
specific differences more easily.  In this case, we
disable sw swapping of the rtpr writeback value on
r6xx+ since the hw does it for us.  Fixes bogus
rptr readback on BE systems.

v2: remove missed cpu_to_le32(), add comments

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 5 insertions, 39 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index cc0c9b2a8819..1b783f0e6d3a 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -332,36 +332,6 @@ bool radeon_ring_supports_scratch_reg(struct radeon_device *rdev,
 	}
 }
 
-u32 radeon_ring_generic_get_rptr(struct radeon_device *rdev,
-				 struct radeon_ring *ring)
-{
-	u32 rptr;
-
-	if (rdev->wb.enabled)
-		rptr = le32_to_cpu(rdev->wb.wb[ring->rptr_offs/4]);
-	else
-		rptr = RREG32(ring->rptr_reg);
-
-	return rptr;
-}
-
-u32 radeon_ring_generic_get_wptr(struct radeon_device *rdev,
-				 struct radeon_ring *ring)
-{
-	u32 wptr;
-
-	wptr = RREG32(ring->wptr_reg);
-
-	return wptr;
-}
-
-void radeon_ring_generic_set_wptr(struct radeon_device *rdev,
-				  struct radeon_ring *ring)
-{
-	WREG32(ring->wptr_reg, ring->wptr);
-	(void)RREG32(ring->wptr_reg);
-}
-
 /**
  * radeon_ring_free_size - update the free size
  *
@@ -689,22 +659,18 @@ int radeon_ring_restore(struct radeon_device *rdev, struct radeon_ring *ring,
  * @ring: radeon_ring structure holding ring information
  * @ring_size: size of the ring
  * @rptr_offs: offset of the rptr writeback location in the WB buffer
- * @rptr_reg: MMIO offset of the rptr register
- * @wptr_reg: MMIO offset of the wptr register
  * @nop: nop packet for this ring
  *
  * Initialize the driver information for the selected ring (all asics).
  * Returns 0 on success, error on failure.
  */
 int radeon_ring_init(struct radeon_device *rdev, struct radeon_ring *ring, unsigned ring_size,
-		     unsigned rptr_offs, unsigned rptr_reg, unsigned wptr_reg, u32 nop)
+		     unsigned rptr_offs, u32 nop)
 {
 	int r;
 
 	ring->ring_size = ring_size;
 	ring->rptr_offs = rptr_offs;
-	ring->rptr_reg = rptr_reg;
-	ring->wptr_reg = wptr_reg;
 	ring->nop = nop;
 	/* Allocate ring buffer */
 	if (ring->ring_obj == NULL) {
@@ -798,12 +764,12 @@ static int radeon_debugfs_ring_info(struct seq_file *m, void *data)
 	count = (ring->ring_size / 4) - ring->ring_free_dw;
 
 	wptr = radeon_ring_get_wptr(rdev, ring);
-	seq_printf(m, "wptr(0x%04x): 0x%08x [%5d]\n",
-		   ring->wptr_reg, wptr, wptr);
+	seq_printf(m, "wptr: 0x%08x [%5d]\n",
+		   wptr, wptr);
 
 	rptr = radeon_ring_get_rptr(rdev, ring);
-	seq_printf(m, "rptr(0x%04x): 0x%08x [%5d]\n",
-		   ring->rptr_reg, rptr, rptr);
+	seq_printf(m, "rptr: 0x%08x [%5d]\n",
+		   rptr, rptr);
 
 	if (ring->rptr_save_reg) {
 		rptr_next = RREG32(ring->rptr_save_reg);