From: Jason Ekstrand Date: Thu, 8 Jul 2021 15:48:23 +0000 (-0500) Subject: drm/i915/gem: Optionally set SSEU in intel_context_set_gem X-Git-Tag: v6.6.17~3937^2~16^2~1661 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=263ae12c3c8de253ebd33b99518297877d1892c5;p=platform%2Fkernel%2Flinux-rpi.git drm/i915/gem: Optionally set SSEU in intel_context_set_gem For now this is a no-op because everyone passes in a null SSEU but it lets us get some of the error handling and selftest refactoring plumbed through. Signed-off-by: Jason Ekstrand Reviewed-by: Daniel Vetter Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20210708154835.528166-19-jason@jlekstrand.net --- diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index 5b75f98..206721d 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -266,9 +266,12 @@ context_get_vm_rcu(struct i915_gem_context *ctx) } while (1); } -static void intel_context_set_gem(struct intel_context *ce, - struct i915_gem_context *ctx) +static int intel_context_set_gem(struct intel_context *ce, + struct i915_gem_context *ctx, + struct intel_sseu sseu) { + int ret = 0; + GEM_BUG_ON(rcu_access_pointer(ce->gem_context)); RCU_INIT_POINTER(ce->gem_context, ctx); @@ -295,6 +298,12 @@ static void intel_context_set_gem(struct intel_context *ce, intel_context_set_watchdog_us(ce, (u64)timeout_ms * 1000); } + + /* A valid SSEU has no zero fields */ + if (sseu.slice_mask && !WARN_ON(ce->engine->class != RENDER_CLASS)) + ret = intel_context_reconfigure_sseu(ce, sseu); + + return ret; } static void __free_engines(struct i915_gem_engines *e, unsigned int count) @@ -362,7 +371,8 @@ static struct i915_gem_engines *alloc_engines(unsigned int count) return e; } -static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx) +static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx, + struct intel_sseu rcs_sseu) { const struct intel_gt *gt = &ctx->i915->gt; struct intel_engine_cs *engine; @@ -375,6 +385,8 @@ static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx) for_each_engine(engine, gt, id) { struct intel_context *ce; + struct intel_sseu sseu = {}; + int ret; if (engine->legacy_idx == INVALID_ENGINE) continue; @@ -388,10 +400,18 @@ static struct i915_gem_engines *default_engines(struct i915_gem_context *ctx) goto free_engines; } - intel_context_set_gem(ce, ctx); - e->engines[engine->legacy_idx] = ce; e->num_engines = max(e->num_engines, engine->legacy_idx + 1); + + if (engine->class == RENDER_CLASS) + sseu = rcs_sseu; + + ret = intel_context_set_gem(ce, ctx, sseu); + if (ret) { + err = ERR_PTR(ret); + goto free_engines; + } + } return e; @@ -705,6 +725,7 @@ __create_context(struct drm_i915_private *i915, { struct i915_gem_context *ctx; struct i915_gem_engines *e; + struct intel_sseu null_sseu = {}; int err; int i; @@ -722,7 +743,7 @@ __create_context(struct drm_i915_private *i915, INIT_LIST_HEAD(&ctx->stale.engines); mutex_init(&ctx->engines_mutex); - e = default_engines(ctx); + e = default_engines(ctx, null_sseu); if (IS_ERR(e)) { err = PTR_ERR(e); goto err_free; @@ -1508,6 +1529,7 @@ set_engines__load_balance(struct i915_user_extension __user *base, void *data) struct intel_engine_cs *stack[16]; struct intel_engine_cs **siblings; struct intel_context *ce; + struct intel_sseu null_sseu = {}; u16 num_siblings, idx; unsigned int n; int err; @@ -1580,7 +1602,7 @@ set_engines__load_balance(struct i915_user_extension __user *base, void *data) goto out_siblings; } - intel_context_set_gem(ce, set->ctx); + intel_context_set_gem(ce, set->ctx, null_sseu); if (cmpxchg(&set->engines->engines[idx], NULL, ce)) { intel_context_put(ce); @@ -1688,6 +1710,7 @@ set_engines(struct i915_gem_context *ctx, struct drm_i915_private *i915 = ctx->i915; struct i915_context_param_engines __user *user = u64_to_user_ptr(args->value); + struct intel_sseu null_sseu = {}; struct set_engines set = { .ctx = ctx }; unsigned int num_engines, n; u64 extensions; @@ -1697,7 +1720,7 @@ set_engines(struct i915_gem_context *ctx, if (!i915_gem_context_user_engines(ctx)) return 0; - set.engines = default_engines(ctx); + set.engines = default_engines(ctx, null_sseu); if (IS_ERR(set.engines)) return PTR_ERR(set.engines); @@ -1754,7 +1777,7 @@ set_engines(struct i915_gem_context *ctx, return PTR_ERR(ce); } - intel_context_set_gem(ce, ctx); + intel_context_set_gem(ce, ctx, null_sseu); set.engines->engines[n] = ce; } diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_context.c b/drivers/gpu/drm/i915/gem/selftests/mock_context.c index e0f512e..cbeefd0 100644 --- a/drivers/gpu/drm/i915/gem/selftests/mock_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/mock_context.c @@ -14,6 +14,7 @@ mock_context(struct drm_i915_private *i915, { struct i915_gem_context *ctx; struct i915_gem_engines *e; + struct intel_sseu null_sseu = {}; ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) @@ -31,7 +32,7 @@ mock_context(struct drm_i915_private *i915, i915_gem_context_set_persistence(ctx); mutex_init(&ctx->engines_mutex); - e = default_engines(ctx); + e = default_engines(ctx, null_sseu); if (IS_ERR(e)) goto err_free; RCU_INIT_POINTER(ctx->engines, e); @@ -112,6 +113,7 @@ live_context_for_engine(struct intel_engine_cs *engine, struct file *file) { struct i915_gem_engines *engines; struct i915_gem_context *ctx; + struct intel_sseu null_sseu = {}; struct intel_context *ce; engines = alloc_engines(1); @@ -130,7 +132,7 @@ live_context_for_engine(struct intel_engine_cs *engine, struct file *file) return ERR_CAST(ce); } - intel_context_set_gem(ce, ctx); + intel_context_set_gem(ce, ctx, null_sseu); engines->engines[0] = ce; engines->num_engines = 1;