diff --git a/intel/intel_bufmgr.h b/intel/intel_bufmgr.h index 889ef46c..abe9711b 100644 --- a/intel/intel_bufmgr.h +++ b/intel/intel_bufmgr.h @@ -147,6 +147,8 @@ void drm_intel_bufmgr_gem_enable_reuse(drm_intel_bufmgr *bufmgr); void drm_intel_bufmgr_gem_enable_fenced_relocs(drm_intel_bufmgr *bufmgr); int drm_intel_gem_bo_map_gtt(drm_intel_bo *bo); int drm_intel_gem_bo_unmap_gtt(drm_intel_bo *bo); +int drm_intel_gem_bo_get_reloc_count(drm_intel_bo *bo); +void drm_intel_gem_bo_clear_relocs(drm_intel_bo *bo, int start); void drm_intel_gem_bo_start_gtt_access(drm_intel_bo *bo, int write_enable); int drm_intel_get_pipe_from_crtc_id(drm_intel_bufmgr *bufmgr, int crtc_id); diff --git a/intel/intel_bufmgr_gem.c b/intel/intel_bufmgr_gem.c index 31ea26ee..54433ea2 100644 --- a/intel/intel_bufmgr_gem.c +++ b/intel/intel_bufmgr_gem.c @@ -1423,6 +1423,48 @@ drm_intel_gem_bo_emit_reloc_fence(drm_intel_bo *bo, uint32_t offset, read_domains, write_domain, true); } +int +drm_intel_gem_bo_get_reloc_count(drm_intel_bo *bo) +{ + drm_intel_bo_gem *bo_gem = (drm_intel_bo_gem *) bo; + + return bo_gem->reloc_count; +} + +/** + * Removes existing relocation entries in the BO after "start". + * + * This allows a user to avoid a two-step process for state setup with + * counting up all the buffer objects and doing a + * drm_intel_bufmgr_check_aperture_space() before emitting any of the + * relocations for the state setup. Instead, save the state of the + * batchbuffer including drm_intel_gem_get_reloc_count(), emit all the + * state, and then check if it still fits in the aperture. + * + * Any further drm_intel_bufmgr_check_aperture_space() queries + * involving this buffer in the tree are undefined after this call. + */ +void +drm_intel_gem_bo_clear_relocs(drm_intel_bo *bo, int start) +{ + drm_intel_bo_gem *bo_gem = (drm_intel_bo_gem *) bo; + int i; + struct timespec time; + + clock_gettime(CLOCK_MONOTONIC, &time); + + assert(bo_gem->reloc_count >= start); + /* Unreference the cleared target buffers */ + for (i = start; i < bo_gem->reloc_count; i++) { + if (bo_gem->reloc_target_info[i].bo != bo) { + drm_intel_gem_bo_unreference_locked_timed(bo_gem-> + reloc_target_info[i].bo, + time.tv_sec); + } + } + bo_gem->reloc_count = start; +} + /** * Walk the tree of relocations rooted at BO and accumulate the list of * validations to be performed and update the relocation buffers with