From: Prathap Kumar Valsan <prathap.kumar.valsan@xxxxxxxxx> Add routines to interface with GuC firmware for selective TLB invalidation supported on XeHP. Signed-off-by: Prathap Kumar Valsan <prathap.kumar.valsan@xxxxxxxxx> Cc: Matthew Brost <matthew.brost@xxxxxxxxx> Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxx> --- To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover. See [PATCH v2 00/21] at: https://lore.kernel.org/all/cover.1657800199.git.mchehab@xxxxxxxxxx/ .../gpu/drm/i915/gt/uc/abi/guc_actions_abi.h | 3 + drivers/gpu/drm/i915/gt/uc/intel_guc.c | 90 +++++++++++++++++++ drivers/gpu/drm/i915/gt/uc/intel_guc.h | 10 +++ drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h | 3 + 4 files changed, 106 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h index fb0af33e43cc..5c019856a269 100644 --- a/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h +++ b/drivers/gpu/drm/i915/gt/uc/abi/guc_actions_abi.h @@ -188,6 +188,9 @@ enum intel_guc_state_capture_event_status { #define INTEL_GUC_TLB_INVAL_FLUSH_CACHE (1 << 31) enum intel_guc_tlb_invalidation_type { + INTEL_GUC_TLB_INVAL_FULL = 0x0, + INTEL_GUC_TLB_INVAL_PAGE_SELECTIVE = 0x1, + INTEL_GUC_TLB_INVAL_PAGE_SELECTIVE_CTX = 0x2, INTEL_GUC_TLB_INVAL_GUC = 0x3, }; diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c index 8a104a292598..98260a7bc90b 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c @@ -923,6 +923,96 @@ static int guc_send_invalidate_tlb(struct intel_guc *guc, u32 *action, u32 size) return err; } + /* Full TLB invalidation */ +int intel_guc_invalidate_tlb_full(struct intel_guc *guc, + enum intel_guc_tlb_inval_mode mode) +{ + u32 action[] = { + INTEL_GUC_ACTION_TLB_INVALIDATION, + 0, + INTEL_GUC_TLB_INVAL_FULL << INTEL_GUC_TLB_INVAL_TYPE_SHIFT | + mode << INTEL_GUC_TLB_INVAL_MODE_SHIFT | + INTEL_GUC_TLB_INVAL_FLUSH_CACHE, + }; + + if (!INTEL_GUC_SUPPORTS_TLB_INVALIDATION(guc)) { + DRM_ERROR("Tlb invalidation: Operation not supported in this platform!\n"); + return 0; + } + + return guc_send_invalidate_tlb(guc, action, ARRAY_SIZE(action)); +} + +/* + * Selective TLB Invalidation for Address Range: + * TLB's in the Address Range is Invalidated across all engines. + */ +int intel_guc_invalidate_tlb_page_selective(struct intel_guc *guc, + enum intel_guc_tlb_inval_mode mode, + u64 start, u64 length) +{ + u64 vm_total = BIT_ULL(INTEL_INFO(guc_to_gt(guc)->i915)->ppgtt_size); + u32 address_mask = (ilog2(length) - ilog2(I915_GTT_PAGE_SIZE_4K)); + u32 full_range = vm_total == length; + u32 action[] = { + INTEL_GUC_ACTION_TLB_INVALIDATION, + 0, + INTEL_GUC_TLB_INVAL_PAGE_SELECTIVE << INTEL_GUC_TLB_INVAL_TYPE_SHIFT | + mode << INTEL_GUC_TLB_INVAL_MODE_SHIFT | + INTEL_GUC_TLB_INVAL_FLUSH_CACHE, + 0, + full_range ? full_range : lower_32_bits(start), + full_range ? 0 : upper_32_bits(start), + full_range ? 0 : address_mask, + }; + + if (!INTEL_GUC_SUPPORTS_TLB_INVALIDATION_SELECTIVE(guc)) { + DRM_ERROR("Tlb invalidation: Operation not supported in this platform!\n"); + return 0; + } + + GEM_BUG_ON(!IS_ALIGNED(start, I915_GTT_PAGE_SIZE_4K)); + GEM_BUG_ON(!IS_ALIGNED(length, I915_GTT_PAGE_SIZE_4K)); + GEM_BUG_ON(range_overflows(start, length, vm_total)); + + return guc_send_invalidate_tlb(guc, action, ARRAY_SIZE(action)); +} + +/* + * Selective TLB Invalidation for Context: + * Invalidates all TLB's for a specific context across all engines. + */ +int intel_guc_invalidate_tlb_page_selective_ctx(struct intel_guc *guc, + enum intel_guc_tlb_inval_mode mode, + u64 start, u64 length, u32 ctxid) +{ + u64 vm_total = BIT_ULL(INTEL_INFO(guc_to_gt(guc)->i915)->ppgtt_size); + u32 address_mask = (ilog2(length) - ilog2(I915_GTT_PAGE_SIZE_4K)); + u32 full_range = vm_total == length; + u32 action[] = { + INTEL_GUC_ACTION_TLB_INVALIDATION, + 0, + INTEL_GUC_TLB_INVAL_PAGE_SELECTIVE_CTX << INTEL_GUC_TLB_INVAL_TYPE_SHIFT | + mode << INTEL_GUC_TLB_INVAL_MODE_SHIFT | + INTEL_GUC_TLB_INVAL_FLUSH_CACHE, + ctxid, + full_range ? full_range : lower_32_bits(start), + full_range ? 0 : upper_32_bits(start), + full_range ? 0 : address_mask, + }; + + if (!INTEL_GUC_SUPPORTS_TLB_INVALIDATION_SELECTIVE(guc)) { + DRM_ERROR("Tlb invalidation: Operation not supported in this platform!\n"); + return 0; + } + + GEM_BUG_ON(!IS_ALIGNED(start, I915_GTT_PAGE_SIZE_4K)); + GEM_BUG_ON(!IS_ALIGNED(length, I915_GTT_PAGE_SIZE_4K)); + GEM_BUG_ON(range_overflows(start, length, vm_total)); + + return guc_send_invalidate_tlb(guc, action, ARRAY_SIZE(action)); +} + /* * Guc TLB Invalidation: Invalidate the TLB's of GuC itself. */ diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc.h index 01c6478451cc..df6ba1c32808 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h @@ -384,6 +384,16 @@ int intel_guc_allocate_and_map_vma(struct intel_guc *guc, u32 size, int intel_guc_self_cfg32(struct intel_guc *guc, u16 key, u32 value); int intel_guc_self_cfg64(struct intel_guc *guc, u16 key, u64 value); +int intel_guc_g2g_register(struct intel_guc *guc); + +int intel_guc_invalidate_tlb_full(struct intel_guc *guc, + enum intel_guc_tlb_inval_mode mode); +int intel_guc_invalidate_tlb_page_selective(struct intel_guc *guc, + enum intel_guc_tlb_inval_mode mode, + u64 start, u64 length); +int intel_guc_invalidate_tlb_page_selective_ctx(struct intel_guc *guc, + enum intel_guc_tlb_inval_mode mode, + u64 start, u64 length, u32 ctxid); int intel_guc_invalidate_tlb_guc(struct intel_guc *guc, enum intel_guc_tlb_inval_mode mode); int intel_guc_invalidate_tlb_all(struct intel_guc *guc); diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h index 3edf567b3f65..29e402f70a94 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h @@ -436,5 +436,8 @@ enum intel_guc_recv_message { ((intel_guc_ct_enabled(&(guc)->ct)) && \ (intel_guc_submission_is_used(guc)) && \ (GRAPHICS_VER(guc_to_gt((guc))->i915) >= 12)) +#define INTEL_GUC_SUPPORTS_TLB_INVALIDATION_SELECTIVE(guc) \ + (INTEL_GUC_SUPPORTS_TLB_INVALIDATION(guc) && \ + HAS_SELECTIVE_TLB_INVALIDATION(guc_to_gt(guc)->i915)) #endif -- 2.36.1
