Commit 9de433a4 authored by Chris Wilson's avatar Chris Wilson

tests: Add a simple exercise of GTT mmaps

Test copying between 2 mappings and reading/writing from and to.

References: https://bugs.freedesktop.org/show_bug.cgi?id=38115Signed-off-by: Chris Wilson's avatarChris Wilson <chris@chris-wilson.co.uk>
parent 336f85da
......@@ -42,6 +42,7 @@ tests/gem_flink
tests/gem_gtt_speed
tests/gem_largeobject
tests/gem_mmap
tests/gem_mmap_gtt
tests/gem_pread_after_blit
tests/gem_pwrite
tests/gem_readwrite
......
......@@ -22,6 +22,7 @@ TESTS = getversion \
gem_readwrite \
gem_ringfill \
gem_mmap \
gem_mmap_gtt \
gem_pwrite \
gem_pread_after_blit \
gem_tiled_pread \
......
/*
* 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 OBJECT_SIZE (16*1024*1024)
static uint32_t gem_create(int fd, int size)
{
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(ret == 0);
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 void gem_read(int fd,
uint32_t handle, uint32_t offset,
void *dst, int length)
{
struct drm_i915_gem_pread arg;
int ret;
arg.handle = handle;
arg.offset = offset;
arg.size = length;
arg.data_ptr = (uintptr_t)dst;
ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_PREAD, &arg);
assert(ret == 0);
}
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 *
create_pointer(int fd)
{
struct drm_i915_gem_mmap_gtt arg;
uint32_t handle;
void *ptr;
int ret;
memset(&arg, 0, sizeof(arg));
handle = gem_create(fd, OBJECT_SIZE);
arg.handle = handle;
ret = ioctl(fd, DRM_IOCTL_I915_GEM_MMAP_GTT, &arg);
assert(ret == 0);
ptr = mmap(0, OBJECT_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, arg.offset);
assert(ptr != MAP_FAILED);
gem_close(fd, handle);
return ptr;
}
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_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);
}
int main(int argc, char **argv)
{
int fd;
fd = drm_open_any();
test_copy(fd);
test_read(fd);
test_write(fd);
close(fd);
return 0;
}
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