Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:
> If we are setting the context and do inhibit the restoration from the
> context image, also forgo applying the set-context w/a.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_gem_context.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
> index baceca14f5e0..25e8db73542a 100644
> --- a/drivers/gpu/drm/i915/i915_gem_context.c
> +++ b/drivers/gpu/drm/i915/i915_gem_context.c
> @@ -577,17 +577,17 @@ void i915_gem_context_close(struct drm_device *dev, struct drm_file *file)
> }
>
> static inline int
> -mi_set_context(struct drm_i915_gem_request *req, u32 hw_flags)
> +mi_set_context(struct drm_i915_gem_request *req, u32 flags)
> {
> struct drm_i915_private *dev_priv = req->i915;
> struct intel_engine_cs *engine = req->engine;
> enum intel_engine_id id;
> - u32 *cs, flags = hw_flags | MI_MM_SPACE_GTT;
> const int num_rings =
> /* Use an extended w/a on ivb+ if signalling from other rings */
> i915.semaphores ?
> INTEL_INFO(dev_priv)->num_rings - 1 :
> 0;
> + u32 *cs;
> int len;
>
> /* These flags are for resource streamer on HSW+ */
> @@ -595,10 +595,10 @@ mi_set_context(struct drm_i915_gem_request *req, u32 hw_flags)
> flags |= (HSW_MI_RS_SAVE_STATE_EN | HSW_MI_RS_RESTORE_STATE_EN);
> else if (INTEL_GEN(dev_priv) < 8)
> flags |= (MI_SAVE_EXT_STATE_EN | MI_RESTORE_EXT_STATE_EN);
> -
> + flags |= MI_MM_SPACE_GTT;
>
> len = 4;
> - if (INTEL_GEN(dev_priv) >= 7)
> + if (INTEL_GEN(dev_priv) >= 7 && !(flags & MI_RESTORE_INHIBIT))
If we are restoring from the context image, we dont need the
workarounds. So should this be
if (INTEL_GEN(dev_priv) >= 7 && flags & MI_RESTORE_INHIBIT)
?
-Mika
> len += 2 + (num_rings ? 4*num_rings + 6 : 0);
>
> cs = intel_ring_begin(req, len);
> @@ -606,7 +606,7 @@ mi_set_context(struct drm_i915_gem_request *req, u32 hw_flags)
> return PTR_ERR(cs);
>
> /* WaProgramMiArbOnOffAroundMiSetContext:ivb,vlv,hsw,bdw,chv */
> - if (INTEL_GEN(dev_priv) >= 7) {
> + if (INTEL_GEN(dev_priv) >= 7 && !(flags & MI_RESTORE_INHIBIT)) {
> *cs++ = MI_ARB_ON_OFF | MI_ARB_DISABLE;
> if (num_rings) {
> struct intel_engine_cs *signaller;
> @@ -633,7 +633,7 @@ mi_set_context(struct drm_i915_gem_request *req, u32 hw_flags)
> */
> *cs++ = MI_NOOP;
>
> - if (INTEL_GEN(dev_priv) >= 7) {
> + if (INTEL_GEN(dev_priv) >= 7 && !(flags & MI_RESTORE_INHIBIT)) {
> if (num_rings) {
> struct intel_engine_cs *signaller;
> i915_reg_t last_reg = {}; /* keep gcc quiet */
> --
> 2.11.0
>
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