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/*
* Copyright © 2018 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.
*/
#include <stdbool.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/ioctl.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 "drm.h"
#include "i915/gem.h"
#include "igt.h"
IGT_TEST_DESCRIPTION("A very simple workload for the VME media block.");
#define WIDTH 64
#define STRIDE (WIDTH)
#define HEIGHT 64
#define INPUT_SIZE (WIDTH * HEIGHT * sizeof(char) * 1.5)
#define OUTPUT_SIZE (56*sizeof(int))
static uint64_t switch_off_n_bits(uint64_t mask, unsigned int n)
{
unsigned int i;
igt_assert(n > 0 && n <= (sizeof(mask) * 8));
igt_assert(n <= __builtin_popcount(mask));
for (i = 0; n && i < (sizeof(mask) * 8); i++) {
uint64_t bit = 1ULL << i;
if (bit & mask) {
mask &= ~bit;
n--;
}
}
return mask;
}
static void shut_non_vme_subslices(int drm_fd, uint32_t ctx)
{
struct drm_i915_gem_context_param_sseu sseu = { };
struct drm_i915_gem_context_param arg = {
.param = I915_CONTEXT_PARAM_SSEU,
.ctx_id = ctx,
.size = sizeof(sseu),
.value = to_user_pointer(&sseu),
};
int ret;
if (__gem_context_get_param(drm_fd, &arg))
return; /* no sseu support */
ret = __gem_context_set_param(drm_fd, &arg);
igt_assert(ret == 0 || ret == -ENODEV || ret == -EINVAL);
if (ret)
return; /* no sseu support */
/* shutdown half subslices */
sseu.subslice_mask =
switch_off_n_bits(sseu.subslice_mask,
__builtin_popcount(sseu.subslice_mask) / 2);
gem_context_set_param(drm_fd, &arg);
}
igt_simple_main
{
struct buf_ops *bops;
struct intel_buf src, dst;
int drm_fd;
uint32_t devid, ctx;
igt_vme_func_t media_vme;
drm_fd = drm_open_driver(DRIVER_INTEL);
igt_require_gem(drm_fd);
devid = intel_get_drm_devid(drm_fd);
media_vme = igt_get_media_vme_func(devid);
igt_require_f(media_vme, "no media-vme function\n");
bops = buf_ops_create(drm_fd);
/* Use WIDTH/HEIGHT/STRIDE according to INPUT_SIZE */
intel_buf_init(bops, &src, WIDTH, HEIGHT * 1.5, 8, STRIDE,
I915_TILING_NONE, 0);
/* This comes from OUTPUT_SIZE requirements */
intel_buf_init(bops, &dst, 56, sizeof(int), 8, 56,
I915_TILING_NONE, 0);
dst.surface[0].stride = 1;
ctx = gem_context_create(drm_fd);
igt_assert(ctx);
/* ICL hangs if non-VME enabled slices are enabled with a VME kernel. */
if (intel_gen(devid) == 11)
shut_non_vme_subslices(drm_fd, ctx);
igt_fork_hang_detector(drm_fd);
media_vme(drm_fd, ctx, &src, WIDTH, HEIGHT, &dst);
gem_sync(drm_fd, dst.handle);
igt_stop_hang_detector();
}
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