drm/i915/selftests: Exercise all copy engines with the blt routines

Just to remove an obnoxious HAS_ENGINES(), and in the process make the
code agnostic to the availabilty of any particular engine by making it
exercise any and all such engines declared on the system.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200604123641.767-1-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
index 8fe3ad2..299c29e 100644 (file)
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_client_blt.c
@@ -702,8 +702,5 @@ int i915_gem_client_blt_live_selftests(struct drm_i915_private *i915)
        if (intel_gt_is_wedged(&i915->gt))
                return 0;
 
-       if (!HAS_ENGINE(i915, BCS0))
-               return 0;
-
        return i915_live_subtests(tests, i915);
 }

diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
index 31549ad..23b6e11 100644 (file)
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_object_blt.c
@@ -193,7 +193,7 @@ err_src:
 }
 
 struct igt_thread_arg {
-       struct drm_i915_private *i915;
+       struct intel_engine_cs *engine;
        struct i915_gem_context *ctx;
        struct file *file;
        struct rnd_state prng;
@@ -203,7 +203,7 @@ struct igt_thread_arg {
 static int igt_fill_blt_thread(void *arg)
 {
        struct igt_thread_arg *thread = arg;
-       struct drm_i915_private *i915 = thread->i915;
+       struct intel_engine_cs *engine = thread->engine;
        struct rnd_state *prng = &thread->prng;
        struct drm_i915_gem_object *obj;
        struct i915_gem_context *ctx;
@@ -215,7 +215,7 @@ static int igt_fill_blt_thread(void *arg)
 
        ctx = thread->ctx;
        if (!ctx) {
-               ctx = live_context(i915, thread->file);
+               ctx = live_context_for_engine(engine, thread->file);
                if (IS_ERR(ctx))
                        return PTR_ERR(ctx);
 
@@ -223,7 +223,7 @@ static int igt_fill_blt_thread(void *arg)
                ctx->sched.priority = I915_USER_PRIORITY(prio);
        }
 
-       ce = i915_gem_context_get_engine(ctx, BCS0);
+       ce = i915_gem_context_get_engine(ctx, 0);
        GEM_BUG_ON(IS_ERR(ce));
 
        /*
@@ -256,7 +256,7 @@ static int igt_fill_blt_thread(void *arg)
                pr_debug("%s with phys_sz= %x, sz=%x, val=%x\n", __func__,
                         phys_sz, sz, val);
 
-               obj = huge_gem_object(i915, phys_sz, sz);
+               obj = huge_gem_object(engine->i915, phys_sz, sz);
                if (IS_ERR(obj)) {
                        err = PTR_ERR(obj);
                        goto err_flush;
@@ -321,7 +321,7 @@ err_flush:
 static int igt_copy_blt_thread(void *arg)
 {
        struct igt_thread_arg *thread = arg;
-       struct drm_i915_private *i915 = thread->i915;
+       struct intel_engine_cs *engine = thread->engine;
        struct rnd_state *prng = &thread->prng;
        struct drm_i915_gem_object *src, *dst;
        struct i915_gem_context *ctx;
@@ -333,7 +333,7 @@ static int igt_copy_blt_thread(void *arg)
 
        ctx = thread->ctx;
        if (!ctx) {
-               ctx = live_context(i915, thread->file);
+               ctx = live_context_for_engine(engine, thread->file);
                if (IS_ERR(ctx))
                        return PTR_ERR(ctx);
 
@@ -341,7 +341,7 @@ static int igt_copy_blt_thread(void *arg)
                ctx->sched.priority = I915_USER_PRIORITY(prio);
        }
 
-       ce = i915_gem_context_get_engine(ctx, BCS0);
+       ce = i915_gem_context_get_engine(ctx, 0);
        GEM_BUG_ON(IS_ERR(ce));
 
        /*
@@ -374,7 +374,7 @@ static int igt_copy_blt_thread(void *arg)
                pr_debug("%s with phys_sz= %x, sz=%x, val=%x\n", __func__,
                         phys_sz, sz, val);
 
-               src = huge_gem_object(i915, phys_sz, sz);
+               src = huge_gem_object(engine->i915, phys_sz, sz);
                if (IS_ERR(src)) {
                        err = PTR_ERR(src);
                        goto err_flush;
@@ -394,7 +394,7 @@ static int igt_copy_blt_thread(void *arg)
                if (!(src->cache_coherent & I915_BO_CACHE_COHERENT_FOR_READ))
                        src->cache_dirty = true;
 
-               dst = huge_gem_object(i915, phys_sz, sz);
+               dst = huge_gem_object(engine->i915, phys_sz, sz);
                if (IS_ERR(dst)) {
                        err = PTR_ERR(dst);
                        goto err_put_src;
@@ -456,7 +456,7 @@ err_flush:
        return err;
 }
 
-static int igt_threaded_blt(struct drm_i915_private *i915,
+static int igt_threaded_blt(struct intel_engine_cs *engine,
                            int (*blt_fn)(void *arg),
                            unsigned int flags)
 #define SINGLE_CTX BIT(0)
@@ -477,14 +477,14 @@ static int igt_threaded_blt(struct drm_i915_private *i915,
        if (!thread)
                goto out_tsk;
 
-       thread[0].file = mock_file(i915);
+       thread[0].file = mock_file(engine->i915);
        if (IS_ERR(thread[0].file)) {
                err = PTR_ERR(thread[0].file);
                goto out_thread;
        }
 
        if (flags & SINGLE_CTX) {
-               thread[0].ctx = live_context(i915, thread[0].file);
+               thread[0].ctx = live_context_for_engine(engine, thread[0].file);
                if (IS_ERR(thread[0].ctx)) {
                        err = PTR_ERR(thread[0].ctx);
                        goto out_file;
@@ -492,7 +492,7 @@ static int igt_threaded_blt(struct drm_i915_private *i915,
        }
 
        for (i = 0; i < n_cpus; ++i) {
-               thread[i].i915 = i915;
+               thread[i].engine = engine;
                thread[i].file = thread[0].file;
                thread[i].ctx = thread[0].ctx;
                thread[i].n_cpus = n_cpus;
@@ -532,24 +532,40 @@ out_tsk:
        return err;
 }
 
+static int test_copy_engines(struct drm_i915_private *i915,
+                            int (*fn)(void *arg),
+                            unsigned int flags)
+{
+       struct intel_engine_cs *engine;
+       int ret;
+
+       for_each_uabi_class_engine(engine, I915_ENGINE_CLASS_COPY, i915) {
+               ret = igt_threaded_blt(engine, fn, flags);
+               if (ret)
+                       return ret;
+       }
+
+       return 0;
+}
+
 static int igt_fill_blt(void *arg)
 {
-       return igt_threaded_blt(arg, igt_fill_blt_thread, 0);
+       return test_copy_engines(arg, igt_fill_blt_thread, 0);
 }
 
 static int igt_fill_blt_ctx0(void *arg)
 {
-       return igt_threaded_blt(arg, igt_fill_blt_thread, SINGLE_CTX);
+       return test_copy_engines(arg, igt_fill_blt_thread, SINGLE_CTX);
 }
 
 static int igt_copy_blt(void *arg)
 {
-       return igt_threaded_blt(arg, igt_copy_blt_thread, 0);
+       return test_copy_engines(arg, igt_copy_blt_thread, 0);
 }
 
 static int igt_copy_blt_ctx0(void *arg)
 {
-       return igt_threaded_blt(arg, igt_copy_blt_thread, SINGLE_CTX);
+       return test_copy_engines(arg, igt_copy_blt_thread, SINGLE_CTX);
 }
 
 int i915_gem_object_blt_live_selftests(struct drm_i915_private *i915)
@@ -564,9 +580,6 @@ int i915_gem_object_blt_live_selftests(struct drm_i915_private *i915)
        if (intel_gt_is_wedged(&i915->gt))
                return 0;
 
-       if (!HAS_ENGINE(i915, BCS0))
-               return 0;
-
        return i915_live_subtests(tests, i915);
 }
 

diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_context.c b/drivers/gpu/drm/i915/gem/selftests/mock_context.c
index e7e3c62..aa0d06c 100644 (file)
--- a/drivers/gpu/drm/i915/gem/selftests/mock_context.c
+++ b/drivers/gpu/drm/i915/gem/selftests/mock_context.c
@@ -100,6 +100,43 @@ err_ctx:
 }
 
 struct i915_gem_context *
+live_context_for_engine(struct intel_engine_cs *engine, struct file *file)
+{
+       struct i915_gem_engines *engines;
+       struct i915_gem_context *ctx;
+       struct intel_context *ce;
+
+       engines = alloc_engines(1);
+       if (!engines)
+               return ERR_PTR(-ENOMEM);
+
+       ctx = live_context(engine->i915, file);
+       if (IS_ERR(ctx)) {
+               __free_engines(engines, 0);
+               return ctx;
+       }
+
+       ce = intel_context_create(engine);
+       if (IS_ERR(ce)) {
+               __free_engines(engines, 0);
+               return ERR_CAST(ce);
+       }
+
+       intel_context_set_gem(ce, ctx);
+       engines->engines[0] = ce;
+       engines->num_engines = 1;
+
+       mutex_lock(&ctx->engines_mutex);
+       i915_gem_context_set_user_engines(ctx);
+       engines = rcu_replace_pointer(ctx->engines, engines, 1);
+       mutex_unlock(&ctx->engines_mutex);
+
+       engines_idle_release(ctx, engines);
+
+       return ctx;
+}
+
+struct i915_gem_context *
 kernel_context(struct drm_i915_private *i915)
 {
        struct i915_gem_context *ctx;

diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_context.h b/drivers/gpu/drm/i915/gem/selftests/mock_context.h
index fb83d2f..2a6121d 100644 (file)
--- a/drivers/gpu/drm/i915/gem/selftests/mock_context.h
+++ b/drivers/gpu/drm/i915/gem/selftests/mock_context.h
@@ -9,6 +9,7 @@
 
 struct file;
 struct drm_i915_private;
+struct intel_engine_cs;
 
 void mock_init_contexts(struct drm_i915_private *i915);
 
@@ -21,6 +22,9 @@ void mock_context_close(struct i915_gem_context *ctx);
 struct i915_gem_context *
 live_context(struct drm_i915_private *i915, struct file *file);
 
+struct i915_gem_context *
+live_context_for_engine(struct intel_engine_cs *engine, struct file *file);
+
 struct i915_gem_context *kernel_context(struct drm_i915_private *i915);
 void kernel_context_close(struct i915_gem_context *ctx);
 

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index f1078e7..472f601 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1261,6 +1261,11 @@ static inline struct drm_i915_private *pdev_to_i915(struct pci_dev *pdev)
             (engine__); \
             (engine__) = rb_to_uabi_engine(rb_next(&(engine__)->uabi_node)))
 
+#define for_each_uabi_class_engine(engine__, class__, i915__) \
+       for ((engine__) = intel_engine_lookup_user((i915__), (class__), 0); \
+            (engine__) && (engine__)->uabi_class == (class__); \
+            (engine__) = rb_to_uabi_engine(rb_next(&(engine__)->uabi_node)))
+
 #define I915_GTT_OFFSET_NONE ((u32)-1)
 
 /*