We may need to allocate more than one pinned context/timeline for each engine which can utilise the per-engine HWSP, so we need to give each a different offset within it.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> Reviewed-by: Matthew Auld <matthew.a...@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200730165231.545-1-ch...@chris-wilson.co.uk --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 2 +- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 18 +++++++++++++--- drivers/gpu/drm/i915/gt/intel_lrc.c | 20 +++++++++++------- .../gpu/drm/i915/gt/intel_ring_submission.c | 3 ++- drivers/gpu/drm/i915/gt/intel_timeline.c | 12 ++++++----- drivers/gpu/drm/i915/gt/intel_timeline.h | 21 +++++++++++++++++-- drivers/gpu/drm/i915/gt/mock_engine.c | 2 +- drivers/gpu/drm/i915/gt/selftest_timeline.c | 6 +++--- 8 files changed, 61 insertions(+), 23 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index efc4ba34c06e..d8cccbab7a51 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -886,7 +886,7 @@ i915_gem_create_context(struct drm_i915_private *i915, unsigned int flags) if (flags & I915_CONTEXT_CREATE_FLAGS_SINGLE_TIMELINE) { struct intel_timeline *timeline; - timeline = intel_timeline_create(&i915->gt, NULL); + timeline = intel_timeline_create(&i915->gt); if (IS_ERR(timeline)) { context_close(ctx); return ERR_CAST(timeline); diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index dd1a42c4d344..86651bbef3a0 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -785,9 +785,11 @@ intel_engine_init_active(struct intel_engine_cs *engine, unsigned int subclass) } static struct intel_context * -create_kernel_context(struct intel_engine_cs *engine) +create_pinned_context(struct intel_engine_cs *engine, + unsigned int hwsp, + struct lock_class_key *key, + const char *name) { - static struct lock_class_key kernel; struct intel_context *ce; int err; @@ -796,6 +798,7 @@ create_kernel_context(struct intel_engine_cs *engine) return ce; __set_bit(CONTEXT_BARRIER_BIT, &ce->flags); + ce->timeline = page_pack_bits(NULL, hwsp); err = intel_context_pin(ce); /* perma-pin so it is always available */ if (err) { @@ -809,11 +812,20 @@ create_kernel_context(struct intel_engine_cs *engine) * should we need to inject GPU operations during their request * construction. */ - lockdep_set_class(&ce->timeline->mutex, &kernel); + lockdep_set_class_and_name(&ce->timeline->mutex, key, name); return ce; } +static struct intel_context * +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"); +} + /** * intel_engines_init_common - initialize cengine state which might require hw access * @engine: Engine to initialize. diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 353b1717fe84..0508347dca49 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -5313,6 +5313,14 @@ populate_lr_context(struct intel_context *ce, return 0; } +static struct intel_timeline *pinned_timeline(struct intel_context *ce) +{ + struct intel_timeline *tl = fetch_and_zero(&ce->timeline); + + return intel_timeline_create_from_engine(ce->engine, + page_unmask_bits(tl)); +} + static int __execlists_context_alloc(struct intel_context *ce, struct intel_engine_cs *engine) { @@ -5343,19 +5351,17 @@ static int __execlists_context_alloc(struct intel_context *ce, goto error_deref_obj; } - if (!ce->timeline) { + if (!page_mask_bits(ce->timeline)) { struct intel_timeline *tl; - struct i915_vma *hwsp; /* * Use the static global HWSP for the kernel context, and * a dynamically allocated cacheline for everyone else. */ - hwsp = NULL; - if (unlikely(intel_context_is_barrier(ce))) - hwsp = engine->status_page.vma; - - tl = intel_timeline_create(engine->gt, hwsp); + if (unlikely(ce->timeline)) + tl = pinned_timeline(ce); + else + tl = intel_timeline_create(engine->gt); if (IS_ERR(tl)) { ret = PTR_ERR(tl); goto error_deref_obj; diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c index 94915f668715..87cef6d01141 100644 --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c @@ -1250,7 +1250,8 @@ int intel_ring_submission_setup(struct intel_engine_cs *engine) return -ENODEV; } - timeline = intel_timeline_create(engine->gt, engine->status_page.vma); + timeline = intel_timeline_create_from_engine(engine, + I915_GEM_HWS_SEQNO_ADDR); if (IS_ERR(timeline)) { err = PTR_ERR(timeline); goto err; diff --git a/drivers/gpu/drm/i915/gt/intel_timeline.c b/drivers/gpu/drm/i915/gt/intel_timeline.c index 46d20f5f3ddc..4f446534bad0 100644 --- a/drivers/gpu/drm/i915/gt/intel_timeline.c +++ b/drivers/gpu/drm/i915/gt/intel_timeline.c @@ -215,7 +215,8 @@ static void cacheline_free(struct intel_timeline_cacheline *cl) static int intel_timeline_init(struct intel_timeline *timeline, struct intel_gt *gt, - struct i915_vma *hwsp) + struct i915_vma *hwsp, + unsigned int offset) { void *vaddr; @@ -246,8 +247,7 @@ static int intel_timeline_init(struct intel_timeline *timeline, vaddr = page_mask_bits(cl->vaddr); } else { - timeline->hwsp_offset = I915_GEM_HWS_SEQNO_ADDR; - + timeline->hwsp_offset = offset; vaddr = i915_gem_object_pin_map(hwsp->obj, I915_MAP_WB); if (IS_ERR(vaddr)) return PTR_ERR(vaddr); @@ -297,7 +297,9 @@ static void intel_timeline_fini(struct intel_timeline *timeline) } struct intel_timeline * -intel_timeline_create(struct intel_gt *gt, struct i915_vma *global_hwsp) +__intel_timeline_create(struct intel_gt *gt, + struct i915_vma *global_hwsp, + unsigned int offset) { struct intel_timeline *timeline; int err; @@ -306,7 +308,7 @@ intel_timeline_create(struct intel_gt *gt, struct i915_vma *global_hwsp) if (!timeline) return ERR_PTR(-ENOMEM); - err = intel_timeline_init(timeline, gt, global_hwsp); + err = intel_timeline_init(timeline, gt, global_hwsp, offset); if (err) { kfree(timeline); return ERR_PTR(err); diff --git a/drivers/gpu/drm/i915/gt/intel_timeline.h b/drivers/gpu/drm/i915/gt/intel_timeline.h index 4298b9ac7327..06bd06c6595f 100644 --- a/drivers/gpu/drm/i915/gt/intel_timeline.h +++ b/drivers/gpu/drm/i915/gt/intel_timeline.h @@ -29,10 +29,27 @@ #include "i915_active.h" #include "i915_syncmap.h" -#include "gt/intel_timeline_types.h" +#include "intel_timeline_types.h" struct intel_timeline * -intel_timeline_create(struct intel_gt *gt, struct i915_vma *global_hwsp); +__intel_timeline_create(struct intel_gt *gt, + struct i915_vma *global_hwsp, + unsigned int offset); + +static inline struct intel_timeline * +intel_timeline_create(struct intel_gt *gt) +{ + return __intel_timeline_create(gt, NULL, 0); +} + +static inline struct intel_timeline * +intel_timeline_create_from_engine(struct intel_engine_cs *engine, + unsigned int offset) +{ + return __intel_timeline_create(engine->gt, + engine->status_page.vma, + offset); +} static inline struct intel_timeline * intel_timeline_get(struct intel_timeline *timeline) diff --git a/drivers/gpu/drm/i915/gt/mock_engine.c b/drivers/gpu/drm/i915/gt/mock_engine.c index 06303ba98c19..d5beb116261f 100644 --- a/drivers/gpu/drm/i915/gt/mock_engine.c +++ b/drivers/gpu/drm/i915/gt/mock_engine.c @@ -153,7 +153,7 @@ static int mock_context_alloc(struct intel_context *ce) return -ENOMEM; GEM_BUG_ON(ce->timeline); - ce->timeline = intel_timeline_create(ce->engine->gt, NULL); + ce->timeline = intel_timeline_create(ce->engine->gt); if (IS_ERR(ce->timeline)) { kfree(ce->engine); return PTR_ERR(ce->timeline); diff --git a/drivers/gpu/drm/i915/gt/selftest_timeline.c b/drivers/gpu/drm/i915/gt/selftest_timeline.c index 6564c989dbee..98ceac2fb77d 100644 --- a/drivers/gpu/drm/i915/gt/selftest_timeline.c +++ b/drivers/gpu/drm/i915/gt/selftest_timeline.c @@ -72,7 +72,7 @@ static int __mock_hwsp_timeline(struct mock_hwsp_freelist *state, unsigned long cacheline; int err; - tl = intel_timeline_create(state->gt, NULL); + tl = intel_timeline_create(state->gt); if (IS_ERR(tl)) return PTR_ERR(tl); @@ -487,7 +487,7 @@ checked_intel_timeline_create(struct intel_gt *gt) { struct intel_timeline *tl; - tl = intel_timeline_create(gt, NULL); + tl = intel_timeline_create(gt); if (IS_ERR(tl)) return tl; @@ -660,7 +660,7 @@ static int live_hwsp_wrap(void *arg) * foreign GPU references. */ - tl = intel_timeline_create(gt, NULL); + tl = intel_timeline_create(gt); if (IS_ERR(tl)) return PTR_ERR(tl); -- 2.20.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
