From 5ac342ef84d7dccd1ba43f5fa2dc10a6feda91e2 Mon Sep 17 00:00:00 2001 From: Matt Roper Date: Wed, 1 Jun 2022 08:07:25 -0700 Subject: [PATCH] drm/i915/pvc: Add SSEU changes PVC splits the mask of enabled DSS over two registers. It also changes the meaning of the EU fuse register such that each bit represents a single EU rather than a pair of EUs. Signed-off-by: Matt Roper Acked-by: Tvrtko Ursulin Reviewed-by: Balasubramani Vivekanandan Link: https://patchwork.freedesktop.org/patch/msgid/20220601150725.521468-7-matthew.d.roper@intel.com --- drivers/gpu/drm/i915/gt/intel_gt_regs.h | 1 + drivers/gpu/drm/i915/gt/intel_sseu.c | 31 ++++++++++++++++++------ drivers/gpu/drm/i915/gt/intel_sseu.h | 2 +- drivers/gpu/drm/i915/i915_drv.h | 2 ++ drivers/gpu/drm/i915/i915_pci.c | 3 ++- drivers/gpu/drm/i915/intel_device_info.h | 1 + 6 files changed, 31 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_gt_regs.h b/drivers/gpu/drm/i915/gt/intel_gt_regs.h index 58e9b464d564..6aa1ceaa8d27 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_regs.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_regs.h @@ -561,6 +561,7 @@ #define GEN11_GT_VEBOX_DISABLE_MASK (0x0f << GEN11_GT_VEBOX_DISABLE_SHIFT) #define GEN12_GT_COMPUTE_DSS_ENABLE _MMIO(0x9144) +#define XEHPC_GT_COMPUTE_DSS_ENABLE_EXT _MMIO(0x9148) #define GEN6_UCGCTL1 _MMIO(0x9400) #define GEN6_GAMUNIT_CLOCK_GATE_DISABLE (1 << 22) diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c index 826d11f18817..7ef75f0d9c9e 100644 --- a/drivers/gpu/drm/i915/gt/intel_sseu.c +++ b/drivers/gpu/drm/i915/gt/intel_sseu.c @@ -210,27 +210,44 @@ static void xehp_sseu_info_init(struct intel_gt *gt) struct intel_uncore *uncore = gt->uncore; u16 eu_en = 0; u8 eu_en_fuse; + int num_compute_regs, num_geometry_regs; int eu; + if (IS_PONTEVECCHIO(gt->i915)) { + num_geometry_regs = 0; + num_compute_regs = 2; + } else { + num_geometry_regs = 1; + num_compute_regs = 1; + } + /* * The concept of slice has been removed in Xe_HP. To be compatible * with prior generations, assume a single slice across the entire * device. Then calculate out the DSS for each workload type within * that software slice. */ - intel_sseu_set_info(sseu, 1, 32, 16); + intel_sseu_set_info(sseu, 1, + 32 * max(num_geometry_regs, num_compute_regs), + 16); sseu->has_xehp_dss = 1; - xehp_load_dss_mask(uncore, &sseu->geometry_subslice_mask, 1, + xehp_load_dss_mask(uncore, &sseu->geometry_subslice_mask, + num_geometry_regs, GEN12_GT_GEOMETRY_DSS_ENABLE); - xehp_load_dss_mask(uncore, &sseu->compute_subslice_mask, 1, - GEN12_GT_COMPUTE_DSS_ENABLE); + xehp_load_dss_mask(uncore, &sseu->compute_subslice_mask, + num_compute_regs, + GEN12_GT_COMPUTE_DSS_ENABLE, + XEHPC_GT_COMPUTE_DSS_ENABLE_EXT); eu_en_fuse = intel_uncore_read(uncore, XEHP_EU_ENABLE) & XEHP_EU_ENA_MASK; - for (eu = 0; eu < sseu->max_eus_per_subslice / 2; eu++) - if (eu_en_fuse & BIT(eu)) - eu_en |= BIT(eu * 2) | BIT(eu * 2 + 1); + if (HAS_ONE_EU_PER_FUSE_BIT(gt->i915)) + eu_en = eu_en_fuse; + else + for (eu = 0; eu < sseu->max_eus_per_subslice / 2; eu++) + if (eu_en_fuse & BIT(eu)) + eu_en |= BIT(eu * 2) | BIT(eu * 2 + 1); xehp_compute_sseu_info(sseu, eu_en); } diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h index f0e09b743faa..aa87d3832d60 100644 --- a/drivers/gpu/drm/i915/gt/intel_sseu.h +++ b/drivers/gpu/drm/i915/gt/intel_sseu.h @@ -33,7 +33,7 @@ struct drm_printer; * Maximum number of 32-bit registers used by hardware to express the * enabled/disabled subslices. */ -#define I915_MAX_SS_FUSE_REGS 1 +#define I915_MAX_SS_FUSE_REGS 2 #define I915_MAX_SS_FUSE_BITS (I915_MAX_SS_FUSE_REGS * 32) /* Maximum number of EUs that can exist within a subslice or DSS. */ diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index ec1b3484fdaf..fbea4d1ede7c 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -1422,6 +1422,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915, #define HAS_3D_PIPELINE(i915) (INTEL_INFO(i915)->has_3d_pipeline) +#define HAS_ONE_EU_PER_FUSE_BIT(i915) (INTEL_INFO(i915)->has_one_eu_per_fuse_bit) + /* i915_gem.c */ void i915_gem_init_early(struct drm_i915_private *dev_priv); void i915_gem_cleanup_early(struct drm_i915_private *dev_priv); diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index 269d7c8f2f81..177aefa6511e 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -1090,7 +1090,8 @@ static const struct intel_device_info ats_m_info = { XE_HP_FEATURES, \ .dma_mask_size = 52, \ .has_3d_pipeline = 0, \ - .has_l3_ccs_read = 1 + .has_l3_ccs_read = 1, \ + .has_one_eu_per_fuse_bit = 1 __maybe_unused static const struct intel_device_info pvc_info = { diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h index 4e1c80966ab5..346f17f2dce8 100644 --- a/drivers/gpu/drm/i915/intel_device_info.h +++ b/drivers/gpu/drm/i915/intel_device_info.h @@ -158,6 +158,7 @@ enum intel_ppgtt_type { func(has_logical_ring_elsq); \ func(has_media_ratio_mode); \ func(has_mslices); \ + func(has_one_eu_per_fuse_bit); \ func(has_pooled_eu); \ func(has_pxp); \ func(has_rc6); \ -- 2.34.1