Allow internal clients to create a pinned context.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/gt/intel_engine.h | 8 ++++++++
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 17 ++++++++++-------
2 files changed, 18 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine.h
b/drivers/gpu/drm/i915/gt/intel_engine.h
index 760fefdfe392..ac58fcda4927 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine.h
+++ b/drivers/gpu/drm/i915/gt/intel_engine.h
@@ -19,7 +19,9 @@
#include "intel_workarounds.h"
struct drm_printer;
+struct intel_context;
struct intel_gt;
+struct lock_class_key;
/* Early gen2 devices have a cacheline of just 32 bytes, using 64 is overkill,
* but keeps the logic simple. Indeed, the whole purpose of this macro is just
@@ -336,6 +338,12 @@ struct i915_request *
intel_engine_find_active_request(struct intel_engine_cs *engine);
u32 intel_engine_context_size(struct intel_gt *gt, u8 class);
+struct intel_context *
+intel_engine_create_pinned_context(struct intel_engine_cs *engine,
+ unsigned int ring_size,
+ unsigned int hwsp,
+ struct lock_class_key *key,
+ const char *name);
void intel_engine_init_active(struct intel_engine_cs *engine,
unsigned int subclass);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index d4e988b2816a..f37de40f8a4f 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -796,11 +796,12 @@ intel_engine_init_active(struct intel_engine_cs *engine,
unsigned int subclass)
#endif
}
-static struct intel_context *
-create_pinned_context(struct intel_engine_cs *engine,
- unsigned int hwsp,
- struct lock_class_key *key,
- const char *name)
+struct intel_context *
+intel_engine_create_pinned_context(struct intel_engine_cs *engine,
+ unsigned int ring_size,
+ unsigned int hwsp,
+ struct lock_class_key *key,
+ const char *name)
{
struct intel_context *ce;
int err;
@@ -811,6 +812,7 @@ create_pinned_context(struct intel_engine_cs *engine,
__set_bit(CONTEXT_BARRIER_BIT, &ce->flags);
ce->timeline = page_pack_bits(NULL, hwsp);
+ ce->ring = __intel_context_ring_size(ring_size);
err = intel_context_pin(ce); /* perma-pin so it is always available */
if (err) {
@@ -834,8 +836,9 @@ create_kernel_context(struct intel_engine_cs *engine)
{
static struct lock_class_key kernel;
- return create_pinned_context(engine, I915_GEM_HWS_SEQNO_ADDR,
- &kernel, "kernel_context");
+ return intel_engine_create_pinned_context(engine, SZ_4K,
+ I915_GEM_HWS_SEQNO_ADDR,
+ &kernel, "kernel_context");
}
/**
--
2.20.1
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