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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2016-09-09 14:11:46 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2016-09-09 14:23:01 +0100 |
| commit | 70c2a24dbfd28eb9b905b369679b32a74361d7ac (patch) | |
| tree | 5c083d0a846b1aa0720566cd6536d7aa340da732 /drivers/gpu/drm/i915/intel_ringbuffer.h | |
| parent | bbd6c47e114f30dbe26018694059f2491c22271c (diff) | |
| download | lwn-70c2a24dbfd28eb9b905b369679b32a74361d7ac.tar.gz lwn-70c2a24dbfd28eb9b905b369679b32a74361d7ac.zip | |
drm/i915: Simplify ELSP queue request tracking
Emulate HW to track and manage ELSP queue. A set of SW ports are defined
and requests are assigned to these ports before submitting them to HW. This
helps in cleaning up incomplete requests during reset recovery easier
especially after engine reset by decoupling elsp queue management. This
will become more clear in the next patch.
In the engine reset case we want to resume where we left-off after skipping
the incomplete batch which requires checking the elsp queue, removing
element and fixing elsp_submitted counts in some cases. Instead of directly
manipulating the elsp queue from reset path we can examine these ports, fix
up ringbuffer pointers using the incomplete request and restart submissions
again after reset.
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Arun Siluvery <arun.siluvery@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1470414607-32453-3-git-send-email-arun.siluvery@linux.intel.com
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20160909131201.16673-6-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ringbuffer.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ringbuffer.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index 84aea549de5d..2181d0a41a96 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -298,11 +298,14 @@ struct intel_engine_cs { /* Execlists */ struct tasklet_struct irq_tasklet; spinlock_t execlist_lock; /* used inside tasklet, use spin_lock_bh */ + struct execlist_port { + struct drm_i915_gem_request *request; + unsigned int count; + } execlist_port[2]; struct list_head execlist_queue; unsigned int fw_domains; - unsigned int next_context_status_buffer; - unsigned int idle_lite_restore_wa; bool disable_lite_restore_wa; + bool preempt_wa; u32 ctx_desc_template; /** |