From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9005310E82A for ; Tue, 1 Mar 2022 07:58:14 +0000 (UTC) From: =?UTF-8?q?Zbigniew=20Kempczy=C5=84ski?= To: igt-dev@lists.freedesktop.org Date: Tue, 1 Mar 2022 08:58:01 +0100 Message-Id: <20220301075803.117058-2-zbigniew.kempczynski@intel.com> In-Reply-To: <20220301075803.117058-1-zbigniew.kempczynski@intel.com> References: <20220301075803.117058-1-zbigniew.kempczynski@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [igt-dev] [PATCH i-g-t 1/3] lib/intel_memory_regions: Add helper which creates supported dma-buf set List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" List-ID: As different systems support or not dma-buf add function helper which will create set of supported by dma-buf memory regions. Signed-off-by: Zbigniew Kempczyński Cc: Ashutosh Dixit --- lib/i915/intel_memory_region.c | 61 ++++++++++++++++++++++++++++++++++ lib/i915/intel_memory_region.h | 3 ++ 2 files changed, 64 insertions(+) diff --git a/lib/i915/intel_memory_region.c b/lib/i915/intel_memory_region.c index a8759e069..a2db74566 100644 --- a/lib/i915/intel_memory_region.c +++ b/lib/i915/intel_memory_region.c @@ -332,6 +332,67 @@ char *memregion_dynamic_subtest_name(struct igt_collection *set) return name; } +struct mmap_supported_region { + uint32_t region; + struct igt_list_head link; +}; + +/** + * get_dma_buf_mmap_supported_set: + * @i915: i915 drm file descriptor + * @set: memory regions set + * + * Function constructs set with regions which supports dma-buf mapping. + * + * Returns: set of regions which allows do dma-buf mmap or NULL otherwise. + * + * Note: set (igt_collection) need to be destroyed after use. + */ +struct igt_collection * +get_dma_buf_mmap_supported_set(int i915, struct igt_collection *set) +{ + struct igt_collection *region, *supported_set = NULL; + uint32_t reg; + int dma_buf_fd; + char *ptr; + uint32_t handle, bosize = 4096; + int count = 0; + struct mmap_supported_region *mreg, *tmp; + IGT_LIST_HEAD(region_list); + + for_each_combination(region, 1, set) { + reg = igt_collection_get_value(region, 0); + handle = gem_create_in_memory_regions(i915, bosize, reg); + + dma_buf_fd = prime_handle_to_fd(i915, handle); + ptr = mmap(NULL, bosize, PROT_READ, MAP_SHARED, dma_buf_fd, 0); + if (ptr != MAP_FAILED) { + mreg = malloc(sizeof(*mreg)); + igt_assert(mreg); + mreg->region = reg; + igt_list_add_tail(&mreg->link, ®ion_list); + count++; + } + munmap(ptr, bosize); + gem_close(i915, handle); + close(dma_buf_fd); + } + + if (count) { + int i = 0; + + supported_set = igt_collection_create(count); + + igt_list_for_each_entry_safe(mreg, tmp, ®ion_list, link) { + igt_collection_set_value(supported_set, i++, mreg->region); + igt_list_del(&mreg->link); + free(mreg); + } + } + + return supported_set; +} + /** * intel_dump_gpu_meminfo: * @info: pointer to drm_i915_query_memory_regions structure diff --git a/lib/i915/intel_memory_region.h b/lib/i915/intel_memory_region.h index 936e7d1c8..bd92267b6 100644 --- a/lib/i915/intel_memory_region.h +++ b/lib/i915/intel_memory_region.h @@ -111,6 +111,9 @@ __get_memory_region_set(struct drm_i915_query_memory_regions *regions, __get_memory_region_set(regions, arr__, ARRAY_SIZE(arr__)); \ }) +struct igt_collection * +get_dma_buf_mmap_supported_set(int i915, struct igt_collection *set); + char *memregion_dynamic_subtest_name(struct igt_collection *set); void intel_dump_gpu_meminfo(const struct drm_i915_query_memory_regions *info); -- 2.32.0