drm/radeon: drop drivers copy of the rptr
In all cases where it really matters we are using the read functions anyway.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index d2980b0..0f78789 100644
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -342,9 +342,10 @@
*/
void radeon_ring_free_size(struct radeon_device *rdev, struct radeon_ring *ring)
{
- ring->rptr = radeon_ring_get_rptr(rdev, ring);
+ uint32_t rptr = radeon_ring_get_rptr(rdev, ring);
+
/* This works because ring_size is a power of 2 */
- ring->ring_free_dw = (ring->rptr + (ring->ring_size / 4));
+ ring->ring_free_dw = rptr + (ring->ring_size / 4);
ring->ring_free_dw -= ring->wptr;
ring->ring_free_dw &= ring->ptr_mask;
if (!ring->ring_free_dw) {
@@ -376,7 +377,7 @@
/* This is an empty ring update lockup info to avoid
* false positive.
*/
- radeon_ring_lockup_update(ring);
+ radeon_ring_lockup_update(rdev, ring);
}
ndw = (ndw + ring->align_mask) & ~ring->align_mask;
while (ndw > (ring->ring_free_dw - 1)) {
@@ -490,8 +491,7 @@
{
int r;
- radeon_ring_free_size(rdev, ring);
- if (ring->rptr == ring->wptr) {
+ if (radeon_ring_get_rptr(rdev, ring) == ring->wptr) {
r = radeon_ring_alloc(rdev, ring, 1);
if (!r) {
radeon_ring_write(ring, ring->nop);
@@ -507,9 +507,10 @@
*
* Update the last rptr value and timestamp (all asics).
*/
-void radeon_ring_lockup_update(struct radeon_ring *ring)
+void radeon_ring_lockup_update(struct radeon_device *rdev,
+ struct radeon_ring *ring)
{
- ring->last_rptr = ring->rptr;
+ ring->last_rptr = radeon_ring_get_rptr(rdev, ring);
ring->last_activity = jiffies;
}
@@ -535,18 +536,18 @@
**/
bool radeon_ring_test_lockup(struct radeon_device *rdev, struct radeon_ring *ring)
{
+ uint32_t rptr = radeon_ring_get_rptr(rdev, ring);
unsigned long cjiffies, elapsed;
cjiffies = jiffies;
if (!time_after(cjiffies, ring->last_activity)) {
/* likely a wrap around */
- radeon_ring_lockup_update(ring);
+ radeon_ring_lockup_update(rdev, ring);
return false;
}
- ring->rptr = radeon_ring_get_rptr(rdev, ring);
- if (ring->rptr != ring->last_rptr) {
+ if (rptr != ring->last_rptr) {
/* CP is still working no lockup */
- radeon_ring_lockup_update(ring);
+ radeon_ring_lockup_update(rdev, ring);
return false;
}
elapsed = jiffies_to_msecs(cjiffies - ring->last_activity);
@@ -709,7 +710,7 @@
if (radeon_debugfs_ring_init(rdev, ring)) {
DRM_ERROR("Failed to register debugfs file for rings !\n");
}
- radeon_ring_lockup_update(ring);
+ radeon_ring_lockup_update(rdev, ring);
return 0;
}
@@ -780,8 +781,6 @@
seq_printf(m, "driver's copy of the wptr: 0x%08x [%5d]\n",
ring->wptr, ring->wptr);
- seq_printf(m, "driver's copy of the rptr: 0x%08x [%5d]\n",
- ring->rptr, ring->rptr);
seq_printf(m, "last semaphore signal addr : 0x%016llx\n",
ring->last_semaphore_signal_addr);
seq_printf(m, "last semaphore wait addr : 0x%016llx\n",