From 0d0ae16e8ff0d10e01b67913f550a977796cb91a Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Fri, 30 Aug 2019 17:00:22 -0700 Subject: [PATCH] intel: Stop redirecting state cache to command streamer cache section This bit redirects the state cache from the unified/RO sections of the L3 cache to the "CS command buffer" section of the cache, which would be set up via TCCNTLREG. The documentation says: "Additionaly, this redirection should be enabled only if there is a non-zero allocation for the CS command buffer section." We don't allocate any cache to the CS command buffer section, so enabling this redirection effectively disabled the state cache. The Windows driver only sets up that section when using POSH, which we do not currently use. So, leave it unallocated and disable the redirection to get a functional state cache again. Improves performance in Civilization VI by 18%, Manhattan 3.0 by 6%, and Car Chase by 2%. --- src/gallium/drivers/iris/iris_state.c | 6 ------ src/intel/vulkan/genX_state.c | 12 ------------ src/mesa/drivers/dri/i965/brw_state_upload.c | 5 ----- 3 files changed, 23 deletions(-) diff --git a/src/gallium/drivers/iris/iris_state.c b/src/gallium/drivers/iris/iris_state.c index 525263174e0..ec1e56fe356 100644 --- a/src/gallium/drivers/iris/iris_state.c +++ b/src/gallium/drivers/iris/iris_state.c @@ -799,12 +799,6 @@ iris_init_render_context(struct iris_screen *screen, } iris_emit_lri(batch, HALF_SLICE_CHICKEN7, reg_val); - iris_pack_state(GENX(SLICE_COMMON_ECO_CHICKEN1), ®_val, reg) { - reg.StateCacheRedirectToCSSectionEnable = true; - reg.StateCacheRedirectToCSSectionEnableMask = true; - } - iris_emit_lri(batch, SLICE_COMMON_ECO_CHICKEN1, reg_val); - /* Hardware specification recommends disabling repacking for the * compatibility with decompression mechanism in display controller. */ diff --git a/src/intel/vulkan/genX_state.c b/src/intel/vulkan/genX_state.c index 3bf4890b4a4..df76b33a7c3 100644 --- a/src/intel/vulkan/genX_state.c +++ b/src/intel/vulkan/genX_state.c @@ -273,18 +273,6 @@ genX(init_device_state)(struct anv_device *device) lri.DataDWord = half_slice_chicken7; } - /* WaEnableStateCacheRedirectToCS:icl */ - uint32_t slice_common_eco_chicken1; - anv_pack_struct(&slice_common_eco_chicken1, - GENX(SLICE_COMMON_ECO_CHICKEN1), - .StateCacheRedirectToCSSectionEnable = true, - .StateCacheRedirectToCSSectionEnableMask = true); - - anv_batch_emit(&batch, GENX(MI_LOAD_REGISTER_IMM), lri) { - lri.RegisterOffset = GENX(SLICE_COMMON_ECO_CHICKEN1_num); - lri.DataDWord = slice_common_eco_chicken1; - } - #endif genX(emit_slice_hashing_state)(device, &batch); diff --git a/src/mesa/drivers/dri/i965/brw_state_upload.c b/src/mesa/drivers/dri/i965/brw_state_upload.c index 87550425fc7..87e459376a8 100644 --- a/src/mesa/drivers/dri/i965/brw_state_upload.c +++ b/src/mesa/drivers/dri/i965/brw_state_upload.c @@ -189,11 +189,6 @@ brw_upload_initial_gpu_state(struct brw_context *brw) */ brw_load_register_imm32(brw, GEN8_L3CNTLREG, GEN8_L3CNTLREG_EDBC_NO_HANG); - - /* WaEnableStateCacheRedirectToCS:icl */ - brw_load_register_imm32(brw, SLICE_COMMON_ECO_CHICKEN1, - GEN11_STATE_CACHE_REDIRECT_TO_CS_SECTION_ENABLE | - REG_MASK(GEN11_STATE_CACHE_REDIRECT_TO_CS_SECTION_ENABLE)); } /* hardware specification recommends disabling repacking for -- 2.30.2