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/*
* Copyright © 2011 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:
* Chris Wilson <chris@chris-wilson.co.uk>
*
*/
#include <unistd.h>
#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 <sys/ioctl.h>
#include <sys/mman.h>
#include "drm.h"
#include "i915_drm.h"
#include "drmtest.h"
#define MI_BATCH_BUFFER_END (0xA<<23)
/*
* Testcase: Minmal bo_create and batchbuffer exec
*
* Originally this caught an kernel oops due to the unchecked assumption that
* objects have size > 0.
*/
static uint32_t gem_create(int fd, int size, int *retval)
{
struct drm_i915_gem_create create;
int ret;
create.handle = 0;
create.size = (size + 4095) & -4096;
ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_CREATE, &create);
assert(retval || ret == 0);
if (retval)
*retval = errno;
return create.handle;
}
static void gem_write(int fd,
uint32_t handle, uint32_t offset,
const void *src, int length)
{
struct drm_i915_gem_pwrite arg;
int ret;
arg.handle = handle;
arg.offset = offset;
arg.size = length;
arg.data_ptr = (uintptr_t)src;
ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_PWRITE, &arg);
assert(ret == 0);
}
static int gem_exec(int fd, struct drm_i915_gem_execbuffer2 *execbuf)
{
return drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, execbuf);
}
static void gem_close(int fd, uint32_t handle)
{
struct drm_gem_close close;
int ret;
close.handle = handle;
ret = drmIoctl(fd, DRM_IOCTL_GEM_CLOSE, &close);
assert(ret == 0);
}
static void create0(int fd)
{
int retval = 0;
printf("trying to create a zero-length gem object\n");
gem_create(fd, 0, &retval);
assert(retval == EINVAL);
}
static void exec0(int fd)
{
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 exec[1];
uint32_t buf[2] = { MI_BATCH_BUFFER_END, 0 };
/* Just try executing with a zero-length bo.
* We expect the kernel to either accept the nop batch, or reject it
* for the zero-length buffer, but never crash.
*/
exec[0].handle = gem_create(fd, 4096, NULL);
gem_write(fd, exec[0].handle, 0, buf, sizeof(buf));
exec[0].relocation_count = 0;
exec[0].relocs_ptr = 0;
exec[0].alignment = 0;
exec[0].offset = 0;
exec[0].flags = 0;
exec[0].rsvd1 = 0;
exec[0].rsvd2 = 0;
execbuf.buffers_ptr = (uintptr_t)exec;
execbuf.buffer_count = 1;
execbuf.batch_start_offset = 0;
execbuf.batch_len = sizeof(buf);
execbuf.cliprects_ptr = 0;
execbuf.num_cliprects = 0;
execbuf.DR1 = 0;
execbuf.DR4 = 0;
execbuf.flags = 0;
execbuf.rsvd1 = 0;
execbuf.rsvd2 = 0;
printf("trying to run an empty batchbuffer\n");
gem_exec(fd, &execbuf);
gem_close(fd, exec[0].handle);
}
int main(int argc, char **argv)
{
int fd;
fd = drm_open_any();
create0(fd);
//exec0(fd);
close(fd);
return 0;
}
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