drm/i915: Remove 'outstanding_lazy_seqno'
The OLS value is now obsolete. Exactly the same value is guarateed to be always
available as PLR->seqno. Thus it is safe to remove the OLS completely. And also
to rename the PLR to OLR to keep the 'outstanding lazy ...' naming convention
valid.
For: VIZ-4377
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Thomas Daniel <Thomas.Daniel@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index 56c275d..2f944c4 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -876,22 +876,14 @@
}
}
-static int logical_ring_alloc_seqno(struct intel_engine_cs *ring,
- struct intel_context *ctx)
+static int logical_ring_alloc_request(struct intel_engine_cs *ring,
+ struct intel_context *ctx)
{
struct drm_i915_gem_request *request;
int ret;
- /* XXX: The aim is to replace seqno values with request structures.
- * A step along the way is to switch to using the PLR in preference
- * to the OLS. That requires the PLR to only be valid when the OLS is
- * also valid. I.e., the two must be kept in step. */
-
- if (ring->outstanding_lazy_seqno) {
- WARN_ON(ring->preallocated_lazy_request == NULL);
+ if (ring->outstanding_lazy_request)
return 0;
- }
- WARN_ON(ring->preallocated_lazy_request != NULL);
request = kmalloc(sizeof(*request), GFP_KERNEL);
if (request == NULL)
@@ -907,7 +899,7 @@
kref_init(&request->ref);
- ret = i915_gem_get_seqno(ring->dev, &ring->outstanding_lazy_seqno);
+ ret = i915_gem_get_seqno(ring->dev, &request->seqno);
if (ret) {
intel_lr_context_unpin(ring, ctx);
kfree(request);
@@ -921,7 +913,7 @@
request->ctx = ctx;
i915_gem_context_reference(request->ctx);
- ring->preallocated_lazy_request = request;
+ ring->outstanding_lazy_request = request;
return 0;
}
@@ -1098,7 +1090,7 @@
return ret;
/* Preallocate the olr before touching the ring */
- ret = logical_ring_alloc_seqno(ring, ringbuf->FIXME_lrc_ctx);
+ ret = logical_ring_alloc_request(ring, ringbuf->FIXME_lrc_ctx);
if (ret)
return ret;
@@ -1351,7 +1343,8 @@
(ring->status_page.gfx_addr +
(I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT)));
intel_logical_ring_emit(ringbuf, 0);
- intel_logical_ring_emit(ringbuf, ring->outstanding_lazy_seqno);
+ intel_logical_ring_emit(ringbuf,
+ i915_gem_request_get_seqno(ring->outstanding_lazy_request));
intel_logical_ring_emit(ringbuf, MI_USER_INTERRUPT);
intel_logical_ring_emit(ringbuf, MI_NOOP);
intel_logical_ring_advance_and_submit(ringbuf);
@@ -1376,8 +1369,7 @@
intel_logical_ring_stop(ring);
WARN_ON((I915_READ_MODE(ring) & MODE_IDLE) == 0);
- i915_gem_request_assign(&ring->preallocated_lazy_request, NULL);
- ring->outstanding_lazy_seqno = 0;
+ i915_gem_request_assign(&ring->outstanding_lazy_request, NULL);
if (ring->cleanup)
ring->cleanup(ring);