From: Lucas De Marchi Date: Wed, 16 Feb 2022 17:41:39 +0000 (-0800) Subject: drm/i915/guc: Convert engine record to iosys_map X-Git-Tag: v5.18-rc1~109^2~11^2~38 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=4801b99588a2e022da50e43ec5f768707de3f862;p=linux-2.6-block.git drm/i915/guc: Convert engine record to iosys_map Use iosys_map to read fields from the dma_blob so access to IO and system memory is abstracted away. Cc: Matt Roper Cc: Thomas Hellström Cc: Daniel Vetter Cc: John Harrison Cc: Matthew Brost Cc: Daniele Ceraolo Spurio Signed-off-by: Lucas De Marchi Reviewed-by: Matt Atwood Link: https://patchwork.freedesktop.org/patch/msgid/20220216174147.3073235-9-lucas.demarchi@intel.com --- diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c index 7906a4df5a53..c61648ef3920 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c @@ -738,18 +738,16 @@ void intel_guc_ads_reset(struct intel_guc *guc) u32 intel_guc_engine_usage_offset(struct intel_guc *guc) { - struct __guc_ads_blob *blob = guc->ads_blob; - u32 base = intel_guc_ggtt_offset(guc, guc->ads_vma); - u32 offset = base + ptr_offset(blob, engine_usage); - - return offset; + return intel_guc_ggtt_offset(guc, guc->ads_vma) + + offsetof(struct __guc_ads_blob, engine_usage); } -struct guc_engine_usage_record *intel_guc_engine_usage(struct intel_engine_cs *engine) +struct iosys_map intel_guc_engine_usage_record_map(struct intel_engine_cs *engine) { struct intel_guc *guc = &engine->gt->uc.guc; - struct __guc_ads_blob *blob = guc->ads_blob; u8 guc_class = engine_class_to_guc_class(engine->class); + size_t offset = offsetof(struct __guc_ads_blob, + engine_usage.engines[guc_class][ilog2(engine->logical_mask)]); - return &blob->engine_usage.engines[guc_class][ilog2(engine->logical_mask)]; + return IOSYS_MAP_INIT_OFFSET(&guc->ads_map, offset); } diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.h b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.h index e74c110facff..1c64f4d6ea21 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.h +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_ads.h @@ -7,6 +7,7 @@ #define _INTEL_GUC_ADS_H_ #include +#include struct intel_guc; struct drm_printer; @@ -18,7 +19,7 @@ void intel_guc_ads_init_late(struct intel_guc *guc); void intel_guc_ads_reset(struct intel_guc *guc); void intel_guc_ads_print_policy_info(struct intel_guc *guc, struct drm_printer *p); -struct guc_engine_usage_record *intel_guc_engine_usage(struct intel_engine_cs *engine); +struct iosys_map intel_guc_engine_usage_record_map(struct intel_engine_cs *engine); u32 intel_guc_engine_usage_offset(struct intel_guc *guc); #endif diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c index b3a429a92c0d..ab3cea352fb3 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c @@ -1139,6 +1139,9 @@ __extend_last_switch(struct intel_guc *guc, u64 *prev_start, u32 new_start) *prev_start = ((u64)gt_stamp_hi << 32) | new_start; } +#define record_read(map_, field_) \ + iosys_map_rd_field(map_, 0, struct guc_engine_usage_record, field_) + /* * GuC updates shared memory and KMD reads it. Since this is not synchronized, * we run into a race where the value read is inconsistent. Sometimes the @@ -1153,17 +1156,17 @@ __extend_last_switch(struct intel_guc *guc, u64 *prev_start, u32 new_start) static void __get_engine_usage_record(struct intel_engine_cs *engine, u32 *last_in, u32 *id, u32 *total) { - struct guc_engine_usage_record *rec = intel_guc_engine_usage(engine); + struct iosys_map rec_map = intel_guc_engine_usage_record_map(engine); int i = 0; do { - *last_in = READ_ONCE(rec->last_switch_in_stamp); - *id = READ_ONCE(rec->current_context_index); - *total = READ_ONCE(rec->total_runtime); + *last_in = record_read(&rec_map, last_switch_in_stamp); + *id = record_read(&rec_map, current_context_index); + *total = record_read(&rec_map, total_runtime); - if (READ_ONCE(rec->last_switch_in_stamp) == *last_in && - READ_ONCE(rec->current_context_index) == *id && - READ_ONCE(rec->total_runtime) == *total) + if (record_read(&rec_map, last_switch_in_stamp) == *last_in && + record_read(&rec_map, current_context_index) == *id && + record_read(&rec_map, total_runtime) == *total) break; } while (++i < 6); }