1 // SPDX-License-Identifier: MIT
21  * Objects can opt-in to PXP encryption at creation time via the
49 	return pxp->ce;  in intel_pxp_is_enabled()
54 	return pxp->arb_is_valid;  in intel_pxp_is_active()
64 	intel_uncore_write(gt->uncore, KCR_INIT,  in kcr_pxp_enable()
70 	intel_uncore_write(gt->uncore, KCR_INIT,  in kcr_pxp_disable()
87 		engine = gt->engine_class[VIDEO_DECODE_CLASS][i];  in create_vcs_context()
89 	GEM_BUG_ON(!engine || engine->class != VIDEO_DECODE_CLASS);  in create_vcs_context()
91 	ce = intel_engine_create_pinned_context(engine, engine->gt->vm, SZ_4K,  in create_vcs_context()
95 		drm_err(&gt->i915->drm, "failed to create VCS ctx for PXP\n");  in create_vcs_context()
99 	pxp->ce = ce;  in create_vcs_context()
106 	intel_engine_destroy_pinned_context(fetch_and_zero(&pxp->ce));  in destroy_vcs_context()
114 	if (!HAS_PXP(gt->i915))  in intel_pxp_init()
117 	mutex_init(&pxp->tee_mutex);  in intel_pxp_init()
124 	init_completion(&pxp->termination);  in intel_pxp_init()
125 	complete_all(&pxp->termination);  in intel_pxp_init()
127 	mutex_init(&pxp->arb_mutex);  in intel_pxp_init()
128 	INIT_WORK(&pxp->session_work, intel_pxp_session_work);  in intel_pxp_init()
138 	drm_info(&gt->i915->drm, "Protected Xe Path (PXP) protected content support initialized\n");  in intel_pxp_init()
151 	pxp->arb_is_valid = false;  in intel_pxp_fini()
160 	pxp->arb_is_valid = false;  in intel_pxp_mark_termination_in_progress()
161 	reinit_completion(&pxp->termination);  in intel_pxp_mark_termination_in_progress()
172 	spin_lock_irq(gt->irq_lock);  in pxp_queue_termination()
174 	pxp->session_events |= PXP_TERMINATION_REQUEST;  in pxp_queue_termination()
175 	queue_work(system_unbound_wq, &pxp->session_work);  in pxp_queue_termination()
176 	spin_unlock_irq(gt->irq_lock);  in pxp_queue_termination()
183 	mutex_lock(&pxp->tee_mutex);  in pxp_component_bound()
184 	if (pxp->pxp_component)  in pxp_component_bound()
186 	mutex_unlock(&pxp->tee_mutex);  in pxp_component_bound()
200 		return -ENODEV;  in intel_pxp_start()
203 		return -ENXIO;  in intel_pxp_start()
205 	mutex_lock(&pxp->arb_mutex);  in intel_pxp_start()
207 	if (pxp->arb_is_valid)  in intel_pxp_start()
208 		goto unlock;  in intel_pxp_start()
212 	if (!wait_for_completion_timeout(&pxp->termination,  in intel_pxp_start()
214 		ret = -ETIMEDOUT;  in intel_pxp_start()
215 		goto unlock;  in intel_pxp_start()
221 	if (!pxp->arb_is_valid)  in intel_pxp_start()
222 		ret = -EIO;  in intel_pxp_start()
224 unlock:  in intel_pxp_start()
225 	mutex_unlock(&pxp->arb_mutex);  in intel_pxp_start()
247 		return -ENODEV;  in intel_pxp_key_check()
250 		return -EINVAL;  in intel_pxp_key_check()
252 	GEM_BUG_ON(!pxp->key_instance);  in intel_pxp_key_check()
260 	if (!obj->pxp_key_instance && assign)  in intel_pxp_key_check()
261 		obj->pxp_key_instance = pxp->key_instance;  in intel_pxp_key_check()
263 	if (obj->pxp_key_instance != pxp->key_instance)  in intel_pxp_key_check()
264 		return -ENOEXEC;  in intel_pxp_key_check()
271 	struct drm_i915_private *i915 = pxp_to_gt(pxp)->i915;  in intel_pxp_invalidate()
275 	spin_lock_irq(&i915->gem.contexts.lock);  in intel_pxp_invalidate()
276 	list_for_each_entry_safe(ctx, cn, &i915->gem.contexts.list, link) {  in intel_pxp_invalidate()
280 		if (!kref_get_unless_zero(&ctx->ref))  in intel_pxp_invalidate()
288 		spin_unlock_irq(&i915->gem.contexts.lock);  in intel_pxp_invalidate()
292 		 * quiesced execution or the HW keys are already long gone and  in intel_pxp_invalidate()
308 		if (ctx->pxp_wakeref) {  in intel_pxp_invalidate()
309 			intel_runtime_pm_put(&i915->runtime_pm,  in intel_pxp_invalidate()
310 					     ctx->pxp_wakeref);  in intel_pxp_invalidate()
311 			ctx->pxp_wakeref = 0;  in intel_pxp_invalidate()
314 		spin_lock_irq(&i915->gem.contexts.lock);  in intel_pxp_invalidate()
318 	spin_unlock_irq(&i915->gem.contexts.lock);  in intel_pxp_invalidate()