drm/i915/ringbuffer: Write the value passed in to the tail register
This should fix the error along the reset path were we tried to clear the
tail register by setting it to 0, but were in fact setting it to the
current value and complaining when it did not reset to 0.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.c b/drivers/gpu/drm/i915/intel_ringbuffer.c
index 0c6eb97..4b53ca8 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.c
@@ -119,12 +119,12 @@
}
}
-static void ring_set_tail(struct drm_device *dev,
- struct intel_ring_buffer *ring,
- u32 value)
+static void ring_write_tail(struct drm_device *dev,
+ struct intel_ring_buffer *ring,
+ u32 value)
{
drm_i915_private_t *dev_priv = dev->dev_private;
- I915_WRITE_TAIL(ring, ring->tail);
+ I915_WRITE_TAIL(ring, value);
}
u32 intel_ring_get_active_head(struct drm_device *dev,
@@ -148,7 +148,7 @@
/* Stop the ring if it's running. */
I915_WRITE_CTL(ring, 0);
I915_WRITE_HEAD(ring, 0);
- ring->set_tail(dev, ring, 0);
+ ring->write_tail(dev, ring, 0);
/* Initialize the ring. */
I915_WRITE_START(ring, obj_priv->gtt_offset);
@@ -729,7 +729,7 @@
struct intel_ring_buffer *ring)
{
ring->tail &= ring->size - 1;
- ring->set_tail(dev, ring, ring->tail);
+ ring->write_tail(dev, ring, ring->tail);
}
static const struct intel_ring_buffer render_ring = {
@@ -738,7 +738,7 @@
.mmio_base = RENDER_RING_BASE,
.size = 32 * PAGE_SIZE,
.init = init_render_ring,
- .set_tail = ring_set_tail,
+ .write_tail = ring_write_tail,
.flush = render_ring_flush,
.add_request = render_ring_add_request,
.get_seqno = render_ring_get_seqno,
@@ -755,7 +755,7 @@
.mmio_base = BSD_RING_BASE,
.size = 32 * PAGE_SIZE,
.init = init_bsd_ring,
- .set_tail = ring_set_tail,
+ .write_tail = ring_write_tail,
.flush = bsd_ring_flush,
.add_request = ring_add_request,
.get_seqno = ring_status_page_get_seqno,
@@ -765,9 +765,9 @@
};
-static void gen6_bsd_ring_set_tail(struct drm_device *dev,
- struct intel_ring_buffer *ring,
- u32 value)
+static void gen6_bsd_ring_write_tail(struct drm_device *dev,
+ struct intel_ring_buffer *ring,
+ u32 value)
{
drm_i915_private_t *dev_priv = dev->dev_private;
@@ -829,7 +829,7 @@
.mmio_base = GEN6_BSD_RING_BASE,
.size = 32 * PAGE_SIZE,
.init = init_bsd_ring,
- .set_tail = gen6_bsd_ring_set_tail,
+ .write_tail = gen6_bsd_ring_write_tail,
.flush = gen6_ring_flush,
.add_request = ring_add_request,
.get_seqno = ring_status_page_get_seqno,
@@ -859,7 +859,7 @@
.mmio_base = BLT_RING_BASE,
.size = 32 * PAGE_SIZE,
.init = init_ring_common,
- .set_tail = ring_set_tail,
+ .write_tail = ring_write_tail,
.flush = gen6_ring_flush,
.add_request = ring_add_request,
.get_seqno = ring_status_page_get_seqno,
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h
index 9e81ff3..6ab40c6 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -46,9 +46,9 @@
int (*init)(struct drm_device *dev,
struct intel_ring_buffer *ring);
- void (*set_tail)(struct drm_device *dev,
- struct intel_ring_buffer *ring,
- u32 value);
+ void (*write_tail)(struct drm_device *dev,
+ struct intel_ring_buffer *ring,
+ u32 value);
void (*flush)(struct drm_device *dev,
struct intel_ring_buffer *ring,
u32 invalidate_domains,