From: Chris Wilson Date: Thu, 28 Apr 2016 08:56:42 +0000 (+0100) Subject: drm/i915: L3 cache remapping is part of context switching X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b0ebde395d35dd1c592817c0f5381842f161b81a;p=linux-beck.git drm/i915: L3 cache remapping is part of context switching Move the i915_gem_l3_remap function such that it next to the context switching, which is where we perform the L3 remap. Signed-off-by: Chris Wilson Cc: Tvrtko Ursulin Reviewed-by: Tvrtko Ursulin Link: http://patchwork.freedesktop.org/patch/msgid/1461833819-3991-8-git-send-email-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 457fb8f548ed..e83ee118843a 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -4738,37 +4738,6 @@ err: return ret; } -int i915_gem_l3_remap(struct drm_i915_gem_request *req, int slice) -{ - struct intel_engine_cs *engine = req->engine; - struct drm_device *dev = engine->dev; - struct drm_i915_private *dev_priv = dev->dev_private; - u32 *remap_info = dev_priv->l3_parity.remap_info[slice]; - int i, ret; - - if (!HAS_L3_DPF(dev) || !remap_info) - return 0; - - ret = intel_ring_begin(req, GEN7_L3LOG_SIZE / 4 * 3); - if (ret) - return ret; - - /* - * Note: We do not worry about the concurrent register cacheline hang - * here because no other code should access these registers other than - * at initialization time. - */ - for (i = 0; i < GEN7_L3LOG_SIZE / 4; i++) { - intel_ring_emit(engine, MI_LOAD_REGISTER_IMM(1)); - intel_ring_emit_reg(engine, GEN7_L3LOG(slice, i)); - intel_ring_emit(engine, remap_info[i]); - } - - intel_ring_advance(engine); - - return ret; -} - void i915_gem_init_swizzling(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c index fb269e4dff3f..ec0122bc4263 100644 --- a/drivers/gpu/drm/i915/i915_gem_context.c +++ b/drivers/gpu/drm/i915/i915_gem_context.c @@ -601,6 +601,37 @@ mi_set_context(struct drm_i915_gem_request *req, u32 hw_flags) return ret; } +int i915_gem_l3_remap(struct drm_i915_gem_request *req, int slice) +{ + struct intel_engine_cs *engine = req->engine; + struct drm_device *dev = engine->dev; + struct drm_i915_private *dev_priv = dev->dev_private; + u32 *remap_info = dev_priv->l3_parity.remap_info[slice]; + int i, ret; + + if (!HAS_L3_DPF(dev) || !remap_info) + return 0; + + ret = intel_ring_begin(req, GEN7_L3LOG_SIZE / 4 * 3); + if (ret) + return ret; + + /* + * Note: We do not worry about the concurrent register cacheline hang + * here because no other code should access these registers other than + * at initialization time. + */ + for (i = 0; i < GEN7_L3LOG_SIZE / 4; i++) { + intel_ring_emit(engine, MI_LOAD_REGISTER_IMM(1)); + intel_ring_emit_reg(engine, GEN7_L3LOG(slice, i)); + intel_ring_emit(engine, remap_info[i]); + } + + intel_ring_advance(engine); + + return ret; +} + static inline bool skip_rcs_switch(struct intel_engine_cs *engine, struct intel_context *to) {