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/*
* Copyright (c) 2012 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:
* Mika Kuoppala <mika.kuoppala@intel.com>
*/
#include "igt.h"
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <pthread.h>
#include "intel_bufmgr.h"
IGT_TEST_DESCRIPTION("Check parallel access to tiled memory.");
/* Testcase: check parallel access to tiled memory
*
* Parallel access to tiled memory caused sigbus
*/
#define NUM_THREADS 2
#define WIDTH 4096
#define HEIGHT 4096
struct thread_ctx {
drm_intel_bo *bo;
};
static drm_intel_bufmgr *bufmgr;
static struct thread_ctx tctx[NUM_THREADS];
static void *copy_fn(void *p)
{
unsigned char *buf;
struct thread_ctx *c = p;
buf = malloc(WIDTH * HEIGHT);
if (buf == NULL)
return (void *)1;
memcpy(buf, c->bo->virtual, WIDTH * HEIGHT);
free(buf);
return (void *)0;
}
static int copy_tile_threaded(drm_intel_bo *bo)
{
int i;
int r;
pthread_t thr[NUM_THREADS];
void *status;
for (i = 0; i < NUM_THREADS; i++) {
tctx[i].bo = bo;
r = pthread_create(&thr[i], NULL, copy_fn, (void *)&tctx[i]);
igt_assert_eq(r, 0);
}
for (i = 0; i < NUM_THREADS; i++) {
pthread_join(thr[i], &status);
igt_assert(status == 0);
}
return 0;
}
igt_simple_main
{
int fd;
drm_intel_bo *bo;
uint32_t tiling_mode = I915_TILING_Y;
unsigned long pitch = 0;
int r;
igt_skip_on_simulation();
fd = drm_open_driver(DRIVER_INTEL);
igt_assert(fd >= 0);
bufmgr = drm_intel_bufmgr_gem_init(fd, 4096);
igt_assert(bufmgr);
bo = drm_intel_bo_alloc_tiled(bufmgr, "mmap bo", WIDTH, HEIGHT, 1,
&tiling_mode, &pitch, 0);
igt_assert(bo);
r = drm_intel_gem_bo_map_gtt(bo);
igt_assert(!r);
r = copy_tile_threaded(bo);
igt_assert(!r);
r = drm_intel_gem_bo_unmap_gtt(bo);
igt_assert(!r);
drm_intel_bo_unreference(bo);
drm_intel_bufmgr_destroy(bufmgr);
close(fd);
}
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