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drm/i915: Remove disable_lite_restore_wa

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This w/a (WaEnableForceRestoreInCtxtDescForVCS) was only used for
preproduction hw, which is no longer in use.  Remove the workaround to
simplify the code.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170123130601.2281-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
This commit is contained in:
Chris Wilson 2017-01-23 13:05:56 +00:00
parent 7c51846030
commit 70962fbe5c
2 changed files with 1 additions and 11 deletions
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11
drivers/gpu/drm/i915/intel_lrc.c
View file

@ -272,10 +272,6 @@ logical_ring_init_platform_invariants(struct intel_engine_cs *engine)
{
struct drm_i915_private *dev_priv = engine->i915;
engine->disable_lite_restore_wa =
IS_BXT_REVID(dev_priv, 0, BXT_REVID_A1) &&
(engine->id == VCS || engine->id == VCS2);
engine->ctx_desc_template = GEN8_CTX_VALID;
if (IS_GEN8(dev_priv))
engine->ctx_desc_template |= GEN8_CTX_L3LLC_COHERENT;
@ -284,11 +280,6 @@ logical_ring_init_platform_invariants(struct intel_engine_cs *engine)
/* TODO: WaDisableLiteRestore when we start using semaphore
* signalling between Command Streamers */
/* ring->ctx_desc_template |= GEN8_CTX_FORCE_RESTORE; */
/* WaEnableForceRestoreInCtxtDescForVCS:skl */
/* WaEnableForceRestoreInCtxtDescForVCS:bxt */
if (engine->disable_lite_restore_wa)
engine->ctx_desc_template |= GEN8_CTX_FORCE_RESTORE;
}
/**
@ -558,7 +549,7 @@ static bool execlists_elsp_ready(struct intel_engine_cs *engine)
int port;
port = 1; /* wait for a free slot */
if (engine->disable_lite_restore_wa || engine->preempt_wa)
if (engine->preempt_wa)
port = 0; /* wait for GPU to be idle before continuing */
return !engine->execlist_port[port].request;

1
drivers/gpu/drm/i915/intel_ringbuffer.h
View file

@ -380,7 +380,6 @@ struct intel_engine_cs {
struct rb_root execlist_queue;
struct rb_node *execlist_first;
unsigned int fw_domains;
bool disable_lite_restore_wa;
bool preempt_wa;
u32 ctx_desc_template;