From: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
We can retrieve offsets to cmds buffers and descriptor from
actual pointers that we already keep locally.
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Reviewed-by: Matthew Brost <matthew.brost@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c | 16 ++++++++++------
1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
index 079e1a160894..34c582105860 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ct.c
@@ -244,6 +244,7 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct)
{
struct intel_guc *guc = ct_to_guc(ct);
u32 base, cmds;
+ void *blob;
int err;
int i;
@@ -251,15 +252,18 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct)
/* vma should be already allocated and map'ed */
GEM_BUG_ON(!ct->vma);
+ GEM_BUG_ON(!i915_gem_object_has_pinned_pages(ct->vma->obj));
base = intel_guc_ggtt_offset(guc, ct->vma);
- /* (re)initialize descriptors
- * cmds buffers are in the second half of the blob page
- */
+ /* blob should start with send descriptor */
+ blob = __px_vaddr(ct->vma->obj);
+ GEM_BUG_ON(blob != ct->ctbs[CTB_SEND].desc);
+
+ /* (re)initialize descriptors */
for (i = 0; i < ARRAY_SIZE(ct->ctbs); i++) {
GEM_BUG_ON((i != CTB_SEND) && (i != CTB_RECV));
- cmds = base + PAGE_SIZE / 4 * i + PAGE_SIZE / 2;
+ cmds = base + ptrdiff(ct->ctbs[i].cmds, blob);
CT_DEBUG(ct, "%d: cmds addr=%#x\n", i, cmds);
guc_ct_buffer_reset(&ct->ctbs[i], cmds);
@@ -269,12 +273,12 @@ int intel_guc_ct_enable(struct intel_guc_ct *ct)
* Register both CT buffers starting with RECV buffer.
* Descriptors are in first half of the blob.
*/
- err = ct_register_buffer(ct, base + PAGE_SIZE / 4 * CTB_RECV,
+ err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs[CTB_RECV].desc, blob),
INTEL_GUC_CT_BUFFER_TYPE_RECV);
if (unlikely(err))
goto err_out;
- err = ct_register_buffer(ct, base + PAGE_SIZE / 4 * CTB_SEND,
+ err = ct_register_buffer(ct, base + ptrdiff(ct->ctbs[CTB_SEND].desc, blob),
INTEL_GUC_CT_BUFFER_TYPE_SEND);
if (unlikely(err))
goto err_deregister;
--
2.28.0
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