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/*
* Copyright © 2009 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:
* Daniel Vetter <daniel.vetter@ffwll.ch>
*
*/
/** @file gem_gtt_cpu_tlb.c
*
* This test checks whether gtt tlbs for cpu access are correctly invalidated.
*/
#include "igt.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/time.h>
#include <sys/ioctl.h>
#include "drm.h"
IGT_TEST_DESCRIPTION("Check whether gtt tlbs for cpu access are correctly"
" invalidated.");
#define OBJ_SIZE (1024*1024)
#define PAGE_SIZE 4096
static uint32_t
create_bo(int fd)
{
uint32_t handle;
uint32_t *data;
int i;
handle = gem_create(fd, OBJ_SIZE);
/* Fill the BO with dwords starting at start_val */
data = gem_mmap__gtt(fd, handle, OBJ_SIZE, PROT_READ | PROT_WRITE);
igt_assert(data);
for (i = 0; i < OBJ_SIZE/4; i++)
data[i] = i;
munmap(data, OBJ_SIZE);
return handle;
}
igt_simple_main
{
int fd;
int i;
uint32_t handle;
uint32_t *ptr;
igt_skip_on_simulation();
fd = drm_open_driver(DRIVER_INTEL);
handle = gem_create(fd, OBJ_SIZE);
/* touch one page */
ptr = gem_mmap__gtt(fd, handle, OBJ_SIZE, PROT_READ | PROT_WRITE);
igt_assert(ptr);
*ptr = 0xdeadbeef;
munmap(ptr, OBJ_SIZE);
gem_close(fd, handle);
/* stirr up the page allocator a bit. */
ptr = malloc(OBJ_SIZE);
igt_assert(ptr);
memset(ptr, 0x1, OBJ_SIZE);
handle = create_bo(fd);
/* Read a bunch of random subsets of the data and check that they come
* out right.
*/
gem_read(fd, handle, 0, ptr, OBJ_SIZE);
for (i = 0; i < OBJ_SIZE/4; i++)
igt_assert(ptr[i] == i);
close(fd);
}
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