Return-Path: Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id A398A6EA6B for ; Fri, 6 Nov 2020 08:30:05 +0000 (UTC) From: Thomas Zimmermann Date: Fri, 6 Nov 2020 09:29:52 +0100 Message-Id: <20201106082955.8939-6-tzimmermann@suse.de> In-Reply-To: <20201106082955.8939-1-tzimmermann@suse.de> References: <20201106082955.8939-1-tzimmermann@suse.de> MIME-Version: 1.0 Subject: [igt-dev] [PATCH v2 5/8] tests/fbdev: Add tests for write operations on framebuffer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" To: daniel.vetter@ffwll.ch, chris@chris-wilson.co.uk, petri.latvala@intel.com Cc: igt-dev@lists.freedesktop.org, Thomas Zimmermann List-ID: The write tests check the written buffer against the content of the mapped framebuffer. Signed-off-by: Thomas Zimmermann --- tests/fbdev.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/tests/fbdev.c b/tests/fbdev.c index 48ffbbf5..f40a9ee1 100644 --- a/tests/fbdev.c +++ b/tests/fbdev.c @@ -138,6 +138,27 @@ static void framebuffer_tests(int fd) igt_require_f(pos, "found 0x55 at pos %zu, none expected\n", pos - buf); } + igt_subtest("write") { + ssize_t ret; + int cmp; + + igt_describe("Check write operations on framebuffer memory"); + + /* write 0 to framebuffer and compare */ + memset(buf, 0, fix_info.smem_len); + ret = pwrite(fd, buf, fix_info.smem_len, 0); + igt_require_f(ret == (ssize_t)fix_info.smem_len, "pwrite failed, ret=%zd\n", ret); + cmp = memcmp(map, buf, fix_info.smem_len); + igt_require_f(!cmp, "write buffer differs from mapped framebuffer for 0\n"); + + /* write 0x55 to framebuffer and compare */ + memset(buf, 0x55, fix_info.smem_len); + ret = pwrite(fd, buf, fix_info.smem_len, 0); + igt_require_f(ret == (ssize_t)fix_info.smem_len, "pwrite failed, ret=%zd\n", ret); + cmp = memcmp(map, buf, fix_info.smem_len); + igt_require_f(!cmp, "write buffer differs from mapped framebuffer for 0\n"); + } + igt_fixture { free(buf); memset(map, 0, fix_info.smem_len); // don't leave garbage on the screen -- 2.29.0 _______________________________________________ igt-dev mailing list igt-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/igt-dev