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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>
*
*/
#define _GNU_SOURCE
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.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"
static int OBJECT_SIZE = 16*1024*1024;
static void set_domain(int fd, uint32_t handle)
{
gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
}
static void *
mmap_bo(int fd, uint32_t handle)
{
void *ptr;
ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE);
igt_assert(ptr != MAP_FAILED);
return ptr;
}
static void *
create_pointer(int fd)
{
uint32_t handle;
void *ptr;
handle = gem_create(fd, OBJECT_SIZE);
ptr = mmap_bo(fd, handle);
gem_close(fd, handle);
return ptr;
}
static void
test_access(int fd)
{
uint32_t handle, flink, handle2;
struct drm_i915_gem_mmap_gtt mmap_arg;
int fd2;
handle = gem_create(fd, OBJECT_SIZE);
igt_assert(handle);
fd2 = drm_open_any();
/* Check that fd1 can mmap. */
mmap_arg.handle = handle;
igt_assert(drmIoctl(fd,
DRM_IOCTL_I915_GEM_MMAP_GTT,
&mmap_arg) == 0);
igt_assert(mmap64(0, OBJECT_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, mmap_arg.offset));
/* Check that the same offset on the other fd doesn't work. */
igt_assert(mmap64(0, OBJECT_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, fd2, mmap_arg.offset) == MAP_FAILED);
igt_assert(errno == EACCES);
flink = gem_flink(fd, handle);
igt_assert(flink);
handle2 = gem_open(fd2, flink);
igt_assert(handle2);
/* Recheck that it works after flink. */
/* Check that the same offset on the other fd doesn't work. */
igt_assert(mmap64(0, OBJECT_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, fd2, mmap_arg.offset));
}
static void
test_copy(int fd)
{
void *src, *dst;
/* copy from a fresh src to fresh dst to force pagefault on both */
src = create_pointer(fd);
dst = create_pointer(fd);
memcpy(dst, src, OBJECT_SIZE);
memcpy(src, dst, OBJECT_SIZE);
munmap(dst, OBJECT_SIZE);
munmap(src, OBJECT_SIZE);
}
static void
test_write(int fd)
{
void *src;
uint32_t dst;
/* copy from a fresh src to fresh dst to force pagefault on both */
src = create_pointer(fd);
dst = gem_create(fd, OBJECT_SIZE);
gem_write(fd, dst, 0, src, OBJECT_SIZE);
gem_close(fd, dst);
munmap(src, OBJECT_SIZE);
}
static void
test_write_gtt(int fd)
{
uint32_t dst;
char *dst_gtt;
void *src;
dst = gem_create(fd, OBJECT_SIZE);
/* prefault object into gtt */
dst_gtt = mmap_bo(fd, dst);
set_domain(fd, dst);
memset(dst_gtt, 0, OBJECT_SIZE);
munmap(dst_gtt, OBJECT_SIZE);
src = create_pointer(fd);
gem_write(fd, dst, 0, src, OBJECT_SIZE);
gem_close(fd, dst);
munmap(src, OBJECT_SIZE);
}
static void
test_read(int fd)
{
void *dst;
uint32_t src;
/* copy from a fresh src to fresh dst to force pagefault on both */
dst = create_pointer(fd);
src = gem_create(fd, OBJECT_SIZE);
gem_read(fd, src, 0, dst, OBJECT_SIZE);
gem_close(fd, src);
munmap(dst, OBJECT_SIZE);
}
static void
run_without_prefault(int fd,
void (*func)(int fd))
{
igt_disable_prefault();
func(fd);
igt_enable_prefault();
}
int fd;
int main(int argc, char **argv)
{
if (igt_run_in_simulation())
OBJECT_SIZE = 1 * 1024 * 1024;
igt_subtest_init(argc, argv);
igt_fixture
fd = drm_open_any();
igt_subtest("access")
test_access(fd);
igt_subtest("copy")
test_copy(fd);
igt_subtest("read")
test_read(fd);
igt_subtest("write")
test_write(fd);
igt_subtest("write-gtt")
test_write_gtt(fd);
igt_subtest("read-no-prefault")
run_without_prefault(fd, test_read);
igt_subtest("write-no-prefault")
run_without_prefault(fd, test_write);
igt_subtest("write-gtt-no-prefault")
run_without_prefault(fd, test_write_gtt);
igt_fixture
close(fd);
igt_exit();
}
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