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Diffstat (limited to 'tests/gem_readwrite.c')
| -rw-r--r-- | tests/gem_readwrite.c | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/tests/gem_readwrite.c b/tests/gem_readwrite.c new file mode 100644 index 00000000..bd1d232b --- /dev/null +++ b/tests/gem_readwrite.c @@ -0,0 +1,135 @@ +/* + * Copyright © 2008 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + * Authors: + * Eric Anholt <eric@anholt.net> + * + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <assert.h> +#include <fcntl.h> +#include <inttypes.h> +#include <errno.h> +#include <sys/stat.h> +#include "drm.h" +#include "i915_drm.h" + +#define OBJECT_SIZE 16384 + +int do_read(int fd, int handle, void *buf, int offset, int size) +{ + struct drm_i915_gem_pread read; + + /* Ensure that we don't have any convenient data in buf in case + * we fail. + */ + memset(buf, 0xd0, size); + + memset(&read, 0, sizeof(read)); + read.handle = handle; + read.data_ptr = (uintptr_t)buf; + read.size = size; + read.offset = offset; + + return ioctl(fd, DRM_IOCTL_I915_GEM_PREAD, &read); +} + +int do_write(int fd, int handle, void *buf, int offset, int size) +{ + struct drm_i915_gem_pwrite write; + + memset(&write, 0, sizeof(write)); + write.handle = handle; + write.data_ptr = (uintptr_t)buf; + write.size = size; + write.offset = offset; + + return ioctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &write); +} + +int main(int argc, char **argv) +{ + int fd; + struct drm_i915_gem_create create; + uint8_t expected[OBJECT_SIZE]; + uint8_t buf[OBJECT_SIZE]; + int ret; + int handle; + + fd = drm_open_any(); + + memset(&create, 0, sizeof(create)); + create.size = OBJECT_SIZE; + ret = ioctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create); + assert(ret == 0); + handle = create.handle; + + printf("Testing contents of newly created object.\n"); + ret = do_read(fd, handle, buf, 0, OBJECT_SIZE); + assert(ret == 0); + memset(&expected, 0, sizeof(expected)); + assert(memcmp(expected, buf, sizeof(expected)) == 0); + + printf("Testing read beyond end of buffer.\n"); + ret = do_read(fd, handle, buf, OBJECT_SIZE / 2, OBJECT_SIZE); + printf("%d %d\n", ret, errno); + assert(ret == -1 && errno == EINVAL); + + printf("Testing full write of buffer\n"); + memset(buf, 0, sizeof(buf)); + memset(buf + 1024, 0x01, 1024); + memset(expected + 1024, 0x01, 1024); + ret = do_write(fd, handle, buf, 0, OBJECT_SIZE); + assert(ret == 0); + ret = do_read(fd, handle, buf, 0, OBJECT_SIZE); + assert(ret == 0); + assert(memcmp(buf, expected, sizeof(buf)) == 0); + + printf("Testing partial write of buffer\n"); + memset(buf + 4096, 0x02, 1024); + memset(expected + 4096, 0x02, 1024); + ret = do_write(fd, handle, buf + 4096, 4096, 1024); + assert(ret == 0); + ret = do_read(fd, handle, buf, 0, OBJECT_SIZE); + assert(ret == 0); + assert(memcmp(buf, expected, sizeof(buf)) == 0); + + printf("Testing partial read of buffer\n"); + ret = do_read(fd, handle, buf, 512, 1024); + assert(ret == 0); + assert(memcmp(buf, expected + 512, 1024) == 0); + + printf("Testing read of bad buffer handle\n"); + ret = do_read(fd, 1234, buf, 0, 1024); + assert(ret == -1 && errno == EBADF); + + printf("Testing write of bad buffer handle\n"); + ret = do_write(fd, 1234, buf, 0, 1024); + assert(ret == -1 && errno == EBADF); + + close(fd); + + return 0; +} |