From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3B763898AF for ; Tue, 10 Nov 2020 07:51:09 +0000 (UTC) From: Thomas Zimmermann Date: Tue, 10 Nov 2020 08:50:57 +0100 Message-Id: <20201110075102.5033-4-tzimmermann@suse.de> In-Reply-To: <20201110075102.5033-1-tzimmermann@suse.de> References: <20201110075102.5033-1-tzimmermann@suse.de> MIME-Version: 1.0 Subject: [igt-dev] [PATCH v3 3/8] tests/fbdev: Add tests for read 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 read tests check the read buffer against the content of the mapped framebuffer. v3: * put igt_describe() before igt_subtest() (Petri) Signed-off-by: Thomas Zimmermann --- tests/fbdev.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/tests/fbdev.c b/tests/fbdev.c index fc66210a..97d66217 100644 --- a/tests/fbdev.c +++ b/tests/fbdev.c @@ -25,6 +25,7 @@ #include "igt.h" +#include #include #include #include @@ -64,6 +65,7 @@ static void framebuffer_tests(int fd) { struct fb_fix_screeninfo fix_info; void *map; + void *buf; igt_fixture { igt_require(ioctl(fd, FBIOGET_FSCREENINFO, &fix_info) == 0); @@ -73,10 +75,33 @@ static void framebuffer_tests(int fd) PROT_WRITE, MAP_SHARED, fd, 0); igt_assert(map != MAP_FAILED); + buf = malloc(fix_info.smem_len); + igt_assert(buf); + } + + igt_describe("Check read operations on framebuffer memory"); + igt_subtest("read") { + ssize_t ret; + int cmp; + + /* fill framebuffer with 0 and compare */ memset(map, 0, fix_info.smem_len); + ret = pread(fd, buf, fix_info.smem_len, 0); + igt_require_f(ret == (ssize_t)fix_info.smem_len, "pread failed, ret=%zd\n", ret); + cmp = memcmp(map, buf, fix_info.smem_len); + igt_require_f(!cmp, "read buffer differs from mapped framebuffer for 0\n"); + + /* fill framebuffer with 0x55 and compare */ + memset(map, 0x55, fix_info.smem_len); + ret = pread(fd, buf, fix_info.smem_len, 0); + igt_require_f(ret == (ssize_t)fix_info.smem_len, "pread failed, ret=%zd\n", ret); + cmp = memcmp(map, buf, fix_info.smem_len); + igt_require_f(!cmp, "read buffer differs from mapped framebuffer for 0x55\n"); } igt_fixture { + free(buf); + memset(map, 0, fix_info.smem_len); // don't leave garbage on the screen munmap(map, fix_info.smem_len); } } -- 2.29.2 _______________________________________________ igt-dev mailing list igt-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/igt-dev