mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 19:56:41 +07:00
drm/i915: Introduce execlist context status change notification
This patch introduces an approach to track the execlist context status change. GVT-g uses GVT context as the "shadow context". The content inside GVT context will be copied back to guest after the context is idle. And GVT-g has to know the status of the execlist context. This function is configurable when creating a new GEM context. Currently, Only GVT-g will create the "status-change-notification" enabled GEM context. v10: - Fix the identation. (Joonas) v8: - Remove the boolean flag in struct i915_gem_context. (Joonas) v7: - Remove per-engine ctx status notifiers. Use one status notifier for all engines. (Joonas) - Add prefix "INTEL_" for related definitions. (Joonas) - Refine the comments in execlists_context_status_change(). (Joonas) v6: - When !CONFIG_DRM_I915_GVT, make GVT code as dead code then compiler could automatically eliminate them for us. (Chris) - Always initialize the notifier header, so it could be switched on/off at runtime. (Chris) v5: - Only compile this feature when CONFIG_DRM_I915_GVT is enabled.(Tvrtko) Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> (v8) Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Signed-off-by: Zhi Wang <zhi.a.wang@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1466078825-6662-8-git-send-email-zhi.a.wang@intel.com Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
parent
c01fc53229
commit
3c7ba6359d
@ -882,6 +882,7 @@ struct i915_gem_context {
|
||||
} engine[I915_NUM_ENGINES];
|
||||
u32 ring_size;
|
||||
u32 desc_template;
|
||||
struct atomic_notifier_head status_notifier;
|
||||
|
||||
struct list_head link;
|
||||
|
||||
|
@ -298,6 +298,7 @@ __create_hw_context(struct drm_device *dev,
|
||||
ctx->ring_size = 4 * PAGE_SIZE;
|
||||
ctx->desc_template = GEN8_CTX_ADDRESSING_MODE(dev_priv) <<
|
||||
GEN8_CTX_ADDRESSING_MODE_SHIFT;
|
||||
ATOMIC_INIT_NOTIFIER_HEAD(&ctx->status_notifier);
|
||||
|
||||
return ctx;
|
||||
|
||||
|
@ -404,6 +404,20 @@ static void execlists_submit_requests(struct drm_i915_gem_request *rq0,
|
||||
spin_unlock_irq(&dev_priv->uncore.lock);
|
||||
}
|
||||
|
||||
static inline void execlists_context_status_change(
|
||||
struct drm_i915_gem_request *rq,
|
||||
unsigned long status)
|
||||
{
|
||||
/*
|
||||
* Only used when GVT-g is enabled now. When GVT-g is disabled,
|
||||
* The compiler should eliminate this function as dead-code.
|
||||
*/
|
||||
if (!IS_ENABLED(CONFIG_DRM_I915_GVT))
|
||||
return;
|
||||
|
||||
atomic_notifier_call_chain(&rq->ctx->status_notifier, status, rq);
|
||||
}
|
||||
|
||||
static void execlists_context_unqueue(struct intel_engine_cs *engine)
|
||||
{
|
||||
struct drm_i915_gem_request *req0 = NULL, *req1 = NULL;
|
||||
@ -439,6 +453,12 @@ static void execlists_context_unqueue(struct intel_engine_cs *engine)
|
||||
if (unlikely(!req0))
|
||||
return;
|
||||
|
||||
execlists_context_status_change(req0, INTEL_CONTEXT_SCHEDULE_IN);
|
||||
|
||||
if (req1)
|
||||
execlists_context_status_change(req1,
|
||||
INTEL_CONTEXT_SCHEDULE_IN);
|
||||
|
||||
if (req0->elsp_submitted & engine->idle_lite_restore_wa) {
|
||||
/*
|
||||
* WaIdleLiteRestore: make sure we never cause a lite restore
|
||||
@ -477,6 +497,8 @@ execlists_check_remove_request(struct intel_engine_cs *engine, u32 ctx_id)
|
||||
if (--head_req->elsp_submitted > 0)
|
||||
return 0;
|
||||
|
||||
execlists_context_status_change(head_req, INTEL_CONTEXT_SCHEDULE_OUT);
|
||||
|
||||
list_del(&head_req->execlist_link);
|
||||
i915_gem_request_unreference(head_req);
|
||||
|
||||
|
@ -57,6 +57,11 @@
|
||||
#define GEN8_CSB_READ_PTR(csb_status) \
|
||||
(((csb_status) & GEN8_CSB_READ_PTR_MASK) >> 8)
|
||||
|
||||
enum {
|
||||
INTEL_CONTEXT_SCHEDULE_IN = 0,
|
||||
INTEL_CONTEXT_SCHEDULE_OUT,
|
||||
};
|
||||
|
||||
/* Logical Rings */
|
||||
int intel_logical_ring_alloc_request_extras(struct drm_i915_gem_request *request);
|
||||
int intel_logical_ring_reserve_space(struct drm_i915_gem_request *request);
|
||||
|
Loading…
Reference in New Issue
Block a user