diff mbox series

[24/27] drm/i915/gem: Don't allow changing the engine set on running contexts

Message ID 20210503155748.1961781-25-jason@jlekstrand.net (mailing list archive)
State New, archived
Headers show
Series drm/i915/gem: ioctl clean-ups (v5) | expand

Commit Message

Jason Ekstrand May 3, 2021, 3:57 p.m. UTC 
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
---
 drivers/gpu/drm/i915/gem/i915_gem_context.c | 304 --------------------
 1 file changed, 304 deletions(-)

Comments

Daniel Vetter May 5, 2021, 9:49 a.m. UTC | #1 
On Mon, May 03, 2021 at 10:57:45AM -0500, Jason Ekstrand wrote:
> Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>

Again needs some commit message, with that:

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

> ---
>  drivers/gpu/drm/i915/gem/i915_gem_context.c | 304 --------------------
>  1 file changed, 304 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> index ad6e98d8a4fbd..6e5828fe1a792 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
> @@ -1823,306 +1823,6 @@ static int set_sseu(struct i915_gem_context *ctx,
>  	return ret;
>  }
>  
> -struct set_engines {
> -	struct i915_gem_context *ctx;
> -	struct i915_gem_engines *engines;
> -};
> -
> -static int
> -set_engines__load_balance(struct i915_user_extension __user *base, void *data)
> -{
> -	struct i915_context_engines_load_balance __user *ext =
> -		container_of_user(base, typeof(*ext), base);
> -	const struct set_engines *set = data;
> -	struct drm_i915_private *i915 = set->ctx->i915;
> -	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;
> -
> -	if (!HAS_EXECLISTS(i915))
> -		return -ENODEV;
> -
> -	if (intel_uc_uses_guc_submission(&i915->gt.uc))
> -		return -ENODEV; /* not implement yet */
> -
> -	if (get_user(idx, &ext->engine_index))
> -		return -EFAULT;
> -
> -	if (idx >= set->engines->num_engines) {
> -		drm_dbg(&i915->drm, "Invalid placement value, %d >= %d\n",
> -			idx, set->engines->num_engines);
> -		return -EINVAL;
> -	}
> -
> -	idx = array_index_nospec(idx, set->engines->num_engines);
> -	if (set->engines->engines[idx]) {
> -		drm_dbg(&i915->drm,
> -			"Invalid placement[%d], already occupied\n", idx);
> -		return -EEXIST;
> -	}
> -
> -	if (get_user(num_siblings, &ext->num_siblings))
> -		return -EFAULT;
> -
> -	err = check_user_mbz(&ext->flags);
> -	if (err)
> -		return err;
> -
> -	err = check_user_mbz(&ext->mbz64);
> -	if (err)
> -		return err;
> -
> -	siblings = stack;
> -	if (num_siblings > ARRAY_SIZE(stack)) {
> -		siblings = kmalloc_array(num_siblings,
> -					 sizeof(*siblings),
> -					 GFP_KERNEL);
> -		if (!siblings)
> -			return -ENOMEM;
> -	}
> -
> -	for (n = 0; n < num_siblings; n++) {
> -		struct i915_engine_class_instance ci;
> -
> -		if (copy_from_user(&ci, &ext->engines[n], sizeof(ci))) {
> -			err = -EFAULT;
> -			goto out_siblings;
> -		}
> -
> -		siblings[n] = intel_engine_lookup_user(i915,
> -						       ci.engine_class,
> -						       ci.engine_instance);
> -		if (!siblings[n]) {
> -			drm_dbg(&i915->drm,
> -				"Invalid sibling[%d]: { class:%d, inst:%d }\n",
> -				n, ci.engine_class, ci.engine_instance);
> -			err = -EINVAL;
> -			goto out_siblings;
> -		}
> -	}
> -
> -	ce = intel_execlists_create_virtual(siblings, n);
> -	if (IS_ERR(ce)) {
> -		err = PTR_ERR(ce);
> -		goto out_siblings;
> -	}
> -
> -	intel_context_set_gem(ce, set->ctx, null_sseu);
> -
> -	if (cmpxchg(&set->engines->engines[idx], NULL, ce)) {
> -		intel_context_put(ce);
> -		err = -EEXIST;
> -		goto out_siblings;
> -	}
> -
> -out_siblings:
> -	if (siblings != stack)
> -		kfree(siblings);
> -
> -	return err;
> -}
> -
> -static int
> -set_engines__bond(struct i915_user_extension __user *base, void *data)
> -{
> -	struct i915_context_engines_bond __user *ext =
> -		container_of_user(base, typeof(*ext), base);
> -	const struct set_engines *set = data;
> -	struct drm_i915_private *i915 = set->ctx->i915;
> -	struct i915_engine_class_instance ci;
> -	struct intel_engine_cs *virtual;
> -	struct intel_engine_cs *master;
> -	u16 idx, num_bonds;
> -	int err, n;
> -
> -	if (get_user(idx, &ext->virtual_index))
> -		return -EFAULT;
> -
> -	if (idx >= set->engines->num_engines) {
> -		drm_dbg(&i915->drm,
> -			"Invalid index for virtual engine: %d >= %d\n",
> -			idx, set->engines->num_engines);
> -		return -EINVAL;
> -	}
> -
> -	idx = array_index_nospec(idx, set->engines->num_engines);
> -	if (!set->engines->engines[idx]) {
> -		drm_dbg(&i915->drm, "Invalid engine at %d\n", idx);
> -		return -EINVAL;
> -	}
> -	virtual = set->engines->engines[idx]->engine;
> -
> -	if (intel_engine_is_virtual(virtual)) {
> -		drm_dbg(&i915->drm,
> -			"Bonding with virtual engines not allowed\n");
> -		return -EINVAL;
> -	}
> -
> -	err = check_user_mbz(&ext->flags);
> -	if (err)
> -		return err;
> -
> -	for (n = 0; n < ARRAY_SIZE(ext->mbz64); n++) {
> -		err = check_user_mbz(&ext->mbz64[n]);
> -		if (err)
> -			return err;
> -	}
> -
> -	if (copy_from_user(&ci, &ext->master, sizeof(ci)))
> -		return -EFAULT;
> -
> -	master = intel_engine_lookup_user(i915,
> -					  ci.engine_class, ci.engine_instance);
> -	if (!master) {
> -		drm_dbg(&i915->drm,
> -			"Unrecognised master engine: { class:%u, instance:%u }\n",
> -			ci.engine_class, ci.engine_instance);
> -		return -EINVAL;
> -	}
> -
> -	if (get_user(num_bonds, &ext->num_bonds))
> -		return -EFAULT;
> -
> -	for (n = 0; n < num_bonds; n++) {
> -		struct intel_engine_cs *bond;
> -
> -		if (copy_from_user(&ci, &ext->engines[n], sizeof(ci)))
> -			return -EFAULT;
> -
> -		bond = intel_engine_lookup_user(i915,
> -						ci.engine_class,
> -						ci.engine_instance);
> -		if (!bond) {
> -			drm_dbg(&i915->drm,
> -				"Unrecognised engine[%d] for bonding: { class:%d, instance: %d }\n",
> -				n, ci.engine_class, ci.engine_instance);
> -			return -EINVAL;
> -		}
> -	}
> -
> -	return 0;
> -}
> -
> -static const i915_user_extension_fn set_engines__extensions[] = {
> -	[I915_CONTEXT_ENGINES_EXT_LOAD_BALANCE] = set_engines__load_balance,
> -	[I915_CONTEXT_ENGINES_EXT_BOND] = set_engines__bond,
> -};
> -
> -static int
> -set_engines(struct i915_gem_context *ctx,
> -	    const struct drm_i915_gem_context_param *args)
> -{
> -	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;
> -	int err;
> -
> -	if (!args->size) { /* switch back to legacy user_ring_map */
> -		if (!i915_gem_context_user_engines(ctx))
> -			return 0;
> -
> -		set.engines = default_engines(ctx, null_sseu);
> -		if (IS_ERR(set.engines))
> -			return PTR_ERR(set.engines);
> -
> -		goto replace;
> -	}
> -
> -	BUILD_BUG_ON(!IS_ALIGNED(sizeof(*user), sizeof(*user->engines)));
> -	if (args->size < sizeof(*user) ||
> -	    !IS_ALIGNED(args->size, sizeof(*user->engines))) {
> -		drm_dbg(&i915->drm, "Invalid size for engine array: %d\n",
> -			args->size);
> -		return -EINVAL;
> -	}
> -
> -	num_engines = (args->size - sizeof(*user)) / sizeof(*user->engines);
> -	/* RING_MASK has no shift so we can use it directly here */
> -	if (num_engines > I915_EXEC_RING_MASK + 1)
> -		return -EINVAL;
> -
> -	set.engines = alloc_engines(num_engines);
> -	if (!set.engines)
> -		return -ENOMEM;
> -
> -	for (n = 0; n < num_engines; n++) {
> -		struct i915_engine_class_instance ci;
> -		struct intel_engine_cs *engine;
> -		struct intel_context *ce;
> -
> -		if (copy_from_user(&ci, &user->engines[n], sizeof(ci))) {
> -			__free_engines(set.engines, n);
> -			return -EFAULT;
> -		}
> -
> -		if (ci.engine_class == (u16)I915_ENGINE_CLASS_INVALID &&
> -		    ci.engine_instance == (u16)I915_ENGINE_CLASS_INVALID_NONE) {
> -			set.engines->engines[n] = NULL;
> -			continue;
> -		}
> -
> -		engine = intel_engine_lookup_user(ctx->i915,
> -						  ci.engine_class,
> -						  ci.engine_instance);
> -		if (!engine) {
> -			drm_dbg(&i915->drm,
> -				"Invalid engine[%d]: { class:%d, instance:%d }\n",
> -				n, ci.engine_class, ci.engine_instance);
> -			__free_engines(set.engines, n);
> -			return -ENOENT;
> -		}
> -
> -		ce = intel_context_create(engine);
> -		if (IS_ERR(ce)) {
> -			__free_engines(set.engines, n);
> -			return PTR_ERR(ce);
> -		}
> -
> -		intel_context_set_gem(ce, ctx, null_sseu);
> -
> -		set.engines->engines[n] = ce;
> -	}
> -	set.engines->num_engines = num_engines;
> -
> -	err = -EFAULT;
> -	if (!get_user(extensions, &user->extensions))
> -		err = i915_user_extensions(u64_to_user_ptr(extensions),
> -					   set_engines__extensions,
> -					   ARRAY_SIZE(set_engines__extensions),
> -					   &set);
> -	if (err) {
> -		free_engines(set.engines);
> -		return err;
> -	}
> -
> -replace:
> -	mutex_lock(&ctx->engines_mutex);
> -	if (i915_gem_context_is_closed(ctx)) {
> -		mutex_unlock(&ctx->engines_mutex);
> -		free_engines(set.engines);
> -		return -ENOENT;
> -	}
> -	if (args->size)
> -		i915_gem_context_set_user_engines(ctx);
> -	else
> -		i915_gem_context_clear_user_engines(ctx);
> -	set.engines = rcu_replace_pointer(ctx->engines, set.engines, 1);
> -	mutex_unlock(&ctx->engines_mutex);
> -
> -	/* Keep track of old engine sets for kill_context() */
> -	engines_idle_release(ctx, set.engines);
> -
> -	return 0;
> -}
> -
>  static int
>  set_persistence(struct i915_gem_context *ctx,
>  		const struct drm_i915_gem_context_param *args)
> @@ -2205,10 +1905,6 @@ static int ctx_setparam(struct drm_i915_file_private *fpriv,
>  		ret = set_sseu(ctx, args);
>  		break;
>  
> -	case I915_CONTEXT_PARAM_ENGINES:
> -		ret = set_engines(ctx, args);
> -		break;
> -
>  	case I915_CONTEXT_PARAM_PERSISTENCE:
>  		ret = set_persistence(ctx, args);
>  		break;
> -- 
> 2.31.1
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index ad6e98d8a4fbd..6e5828fe1a792 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -1823,306 +1823,6 @@  static int set_sseu(struct i915_gem_context *ctx,
 	return ret;
 }
 
-struct set_engines {
-	struct i915_gem_context *ctx;
-	struct i915_gem_engines *engines;
-};
-
-static int
-set_engines__load_balance(struct i915_user_extension __user *base, void *data)
-{
-	struct i915_context_engines_load_balance __user *ext =
-		container_of_user(base, typeof(*ext), base);
-	const struct set_engines *set = data;
-	struct drm_i915_private *i915 = set->ctx->i915;
-	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;
-
-	if (!HAS_EXECLISTS(i915))
-		return -ENODEV;
-
-	if (intel_uc_uses_guc_submission(&i915->gt.uc))
-		return -ENODEV; /* not implement yet */
-
-	if (get_user(idx, &ext->engine_index))
-		return -EFAULT;
-
-	if (idx >= set->engines->num_engines) {
-		drm_dbg(&i915->drm, "Invalid placement value, %d >= %d\n",
-			idx, set->engines->num_engines);
-		return -EINVAL;
-	}
-
-	idx = array_index_nospec(idx, set->engines->num_engines);
-	if (set->engines->engines[idx]) {
-		drm_dbg(&i915->drm,
-			"Invalid placement[%d], already occupied\n", idx);
-		return -EEXIST;
-	}
-
-	if (get_user(num_siblings, &ext->num_siblings))
-		return -EFAULT;
-
-	err = check_user_mbz(&ext->flags);
-	if (err)
-		return err;
-
-	err = check_user_mbz(&ext->mbz64);
-	if (err)
-		return err;
-
-	siblings = stack;
-	if (num_siblings > ARRAY_SIZE(stack)) {
-		siblings = kmalloc_array(num_siblings,
-					 sizeof(*siblings),
-					 GFP_KERNEL);
-		if (!siblings)
-			return -ENOMEM;
-	}
-
-	for (n = 0; n < num_siblings; n++) {
-		struct i915_engine_class_instance ci;
-
-		if (copy_from_user(&ci, &ext->engines[n], sizeof(ci))) {
-			err = -EFAULT;
-			goto out_siblings;
-		}
-
-		siblings[n] = intel_engine_lookup_user(i915,
-						       ci.engine_class,
-						       ci.engine_instance);
-		if (!siblings[n]) {
-			drm_dbg(&i915->drm,
-				"Invalid sibling[%d]: { class:%d, inst:%d }\n",
-				n, ci.engine_class, ci.engine_instance);
-			err = -EINVAL;
-			goto out_siblings;
-		}
-	}
-
-	ce = intel_execlists_create_virtual(siblings, n);
-	if (IS_ERR(ce)) {
-		err = PTR_ERR(ce);
-		goto out_siblings;
-	}
-
-	intel_context_set_gem(ce, set->ctx, null_sseu);
-
-	if (cmpxchg(&set->engines->engines[idx], NULL, ce)) {
-		intel_context_put(ce);
-		err = -EEXIST;
-		goto out_siblings;
-	}
-
-out_siblings:
-	if (siblings != stack)
-		kfree(siblings);
-
-	return err;
-}
-
-static int
-set_engines__bond(struct i915_user_extension __user *base, void *data)
-{
-	struct i915_context_engines_bond __user *ext =
-		container_of_user(base, typeof(*ext), base);
-	const struct set_engines *set = data;
-	struct drm_i915_private *i915 = set->ctx->i915;
-	struct i915_engine_class_instance ci;
-	struct intel_engine_cs *virtual;
-	struct intel_engine_cs *master;
-	u16 idx, num_bonds;
-	int err, n;
-
-	if (get_user(idx, &ext->virtual_index))
-		return -EFAULT;
-
-	if (idx >= set->engines->num_engines) {
-		drm_dbg(&i915->drm,
-			"Invalid index for virtual engine: %d >= %d\n",
-			idx, set->engines->num_engines);
-		return -EINVAL;
-	}
-
-	idx = array_index_nospec(idx, set->engines->num_engines);
-	if (!set->engines->engines[idx]) {
-		drm_dbg(&i915->drm, "Invalid engine at %d\n", idx);
-		return -EINVAL;
-	}
-	virtual = set->engines->engines[idx]->engine;
-
-	if (intel_engine_is_virtual(virtual)) {
-		drm_dbg(&i915->drm,
-			"Bonding with virtual engines not allowed\n");
-		return -EINVAL;
-	}
-
-	err = check_user_mbz(&ext->flags);
-	if (err)
-		return err;
-
-	for (n = 0; n < ARRAY_SIZE(ext->mbz64); n++) {
-		err = check_user_mbz(&ext->mbz64[n]);
-		if (err)
-			return err;
-	}
-
-	if (copy_from_user(&ci, &ext->master, sizeof(ci)))
-		return -EFAULT;
-
-	master = intel_engine_lookup_user(i915,
-					  ci.engine_class, ci.engine_instance);
-	if (!master) {
-		drm_dbg(&i915->drm,
-			"Unrecognised master engine: { class:%u, instance:%u }\n",
-			ci.engine_class, ci.engine_instance);
-		return -EINVAL;
-	}
-
-	if (get_user(num_bonds, &ext->num_bonds))
-		return -EFAULT;
-
-	for (n = 0; n < num_bonds; n++) {
-		struct intel_engine_cs *bond;
-
-		if (copy_from_user(&ci, &ext->engines[n], sizeof(ci)))
-			return -EFAULT;
-
-		bond = intel_engine_lookup_user(i915,
-						ci.engine_class,
-						ci.engine_instance);
-		if (!bond) {
-			drm_dbg(&i915->drm,
-				"Unrecognised engine[%d] for bonding: { class:%d, instance: %d }\n",
-				n, ci.engine_class, ci.engine_instance);
-			return -EINVAL;
-		}
-	}
-
-	return 0;
-}
-
-static const i915_user_extension_fn set_engines__extensions[] = {
-	[I915_CONTEXT_ENGINES_EXT_LOAD_BALANCE] = set_engines__load_balance,
-	[I915_CONTEXT_ENGINES_EXT_BOND] = set_engines__bond,
-};
-
-static int
-set_engines(struct i915_gem_context *ctx,
-	    const struct drm_i915_gem_context_param *args)
-{
-	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;
-	int err;
-
-	if (!args->size) { /* switch back to legacy user_ring_map */
-		if (!i915_gem_context_user_engines(ctx))
-			return 0;
-
-		set.engines = default_engines(ctx, null_sseu);
-		if (IS_ERR(set.engines))
-			return PTR_ERR(set.engines);
-
-		goto replace;
-	}
-
-	BUILD_BUG_ON(!IS_ALIGNED(sizeof(*user), sizeof(*user->engines)));
-	if (args->size < sizeof(*user) ||
-	    !IS_ALIGNED(args->size, sizeof(*user->engines))) {
-		drm_dbg(&i915->drm, "Invalid size for engine array: %d\n",
-			args->size);
-		return -EINVAL;
-	}
-
-	num_engines = (args->size - sizeof(*user)) / sizeof(*user->engines);
-	/* RING_MASK has no shift so we can use it directly here */
-	if (num_engines > I915_EXEC_RING_MASK + 1)
-		return -EINVAL;
-
-	set.engines = alloc_engines(num_engines);
-	if (!set.engines)
-		return -ENOMEM;
-
-	for (n = 0; n < num_engines; n++) {
-		struct i915_engine_class_instance ci;
-		struct intel_engine_cs *engine;
-		struct intel_context *ce;
-
-		if (copy_from_user(&ci, &user->engines[n], sizeof(ci))) {
-			__free_engines(set.engines, n);
-			return -EFAULT;
-		}
-
-		if (ci.engine_class == (u16)I915_ENGINE_CLASS_INVALID &&
-		    ci.engine_instance == (u16)I915_ENGINE_CLASS_INVALID_NONE) {
-			set.engines->engines[n] = NULL;
-			continue;
-		}
-
-		engine = intel_engine_lookup_user(ctx->i915,
-						  ci.engine_class,
-						  ci.engine_instance);
-		if (!engine) {
-			drm_dbg(&i915->drm,
-				"Invalid engine[%d]: { class:%d, instance:%d }\n",
-				n, ci.engine_class, ci.engine_instance);
-			__free_engines(set.engines, n);
-			return -ENOENT;
-		}
-
-		ce = intel_context_create(engine);
-		if (IS_ERR(ce)) {
-			__free_engines(set.engines, n);
-			return PTR_ERR(ce);
-		}
-
-		intel_context_set_gem(ce, ctx, null_sseu);
-
-		set.engines->engines[n] = ce;
-	}
-	set.engines->num_engines = num_engines;
-
-	err = -EFAULT;
-	if (!get_user(extensions, &user->extensions))
-		err = i915_user_extensions(u64_to_user_ptr(extensions),
-					   set_engines__extensions,
-					   ARRAY_SIZE(set_engines__extensions),
-					   &set);
-	if (err) {
-		free_engines(set.engines);
-		return err;
-	}
-
-replace:
-	mutex_lock(&ctx->engines_mutex);
-	if (i915_gem_context_is_closed(ctx)) {
-		mutex_unlock(&ctx->engines_mutex);
-		free_engines(set.engines);
-		return -ENOENT;
-	}
-	if (args->size)
-		i915_gem_context_set_user_engines(ctx);
-	else
-		i915_gem_context_clear_user_engines(ctx);
-	set.engines = rcu_replace_pointer(ctx->engines, set.engines, 1);
-	mutex_unlock(&ctx->engines_mutex);
-
-	/* Keep track of old engine sets for kill_context() */
-	engines_idle_release(ctx, set.engines);
-
-	return 0;
-}
-
 static int
 set_persistence(struct i915_gem_context *ctx,
 		const struct drm_i915_gem_context_param *args)
@@ -2205,10 +1905,6 @@  static int ctx_setparam(struct drm_i915_file_private *fpriv,
 		ret = set_sseu(ctx, args);
 		break;
 
-	case I915_CONTEXT_PARAM_ENGINES:
-		ret = set_engines(ctx, args);
-		break;
-
 	case I915_CONTEXT_PARAM_PERSISTENCE:
 		ret = set_persistence(ctx, args);
 		break;