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/*
* Copyright © 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:
* Ben Widawsky <ben@bwidawsk.net>
*
*/
/*
* This test covers basic context switch functionality
*/
#include <unistd.h>
#include <stdlib.h>
#include <stdint.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/time.h>
#include "drm.h"
#include "i915_drm.h"
#include "drmtest.h"
struct local_drm_i915_gem_context_destroy {
__u32 ctx_id;
__u32 pad;
};
#define CONTEXT_DESTROY_IOCTL DRM_IOWR(DRM_COMMAND_BASE + 0x2e, struct local_drm_i915_gem_context_destroy)
static void context_destroy(int fd, uint32_t ctx_id)
{
struct local_drm_i915_gem_context_destroy destroy;
destroy.ctx_id = ctx_id;
do_ioctl(fd, CONTEXT_DESTROY_IOCTL, &destroy);
}
/* Copied from gem_exec_nop.c */
static int exec(int fd, uint32_t handle, int ring, int ctx_id)
{
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 gem_exec;
int ret = 0;
gem_exec.handle = handle;
gem_exec.relocation_count = 0;
gem_exec.relocs_ptr = 0;
gem_exec.alignment = 0;
gem_exec.offset = 0;
gem_exec.flags = 0;
gem_exec.rsvd1 = 0;
gem_exec.rsvd2 = 0;
execbuf.buffers_ptr = (uintptr_t)&gem_exec;
execbuf.buffer_count = 1;
execbuf.batch_start_offset = 0;
execbuf.batch_len = 8;
execbuf.cliprects_ptr = 0;
execbuf.num_cliprects = 0;
execbuf.DR1 = 0;
execbuf.DR4 = 0;
execbuf.flags = ring;
i915_execbuffer2_set_context_id(execbuf, ctx_id);
execbuf.rsvd2 = 0;
ret = drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2,
&execbuf);
gem_sync(fd, handle);
return ret;
}
static void big_exec(int fd, uint32_t handle, int ring)
{
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 *gem_exec;
uint32_t ctx_id1, ctx_id2;
int num_buffers = gem_available_aperture_size(fd) / 4096;
int i;
/* Make sure we only fill half of RAM with gem objects. */
igt_require(intel_get_total_ram_mb() * 1024 / 2 > num_buffers * 4);
gem_exec = calloc(num_buffers + 1, sizeof(*gem_exec));
igt_assert(gem_exec);
memset(gem_exec, 0, (num_buffers + 1) * sizeof(*gem_exec));
ctx_id1 = gem_context_create(fd);
ctx_id2 = gem_context_create(fd);
gem_exec[0].handle = handle;
execbuf.buffers_ptr = (uintptr_t)gem_exec;
execbuf.buffer_count = num_buffers + 1;
execbuf.batch_start_offset = 0;
execbuf.batch_len = 8;
execbuf.cliprects_ptr = 0;
execbuf.num_cliprects = 0;
execbuf.DR1 = 0;
execbuf.DR4 = 0;
execbuf.flags = ring;
execbuf.rsvd2 = 0;
execbuf.buffer_count = 1;
i915_execbuffer2_set_context_id(execbuf, ctx_id1);
igt_assert(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2,
&execbuf) == 0);
for (i = 0; i < num_buffers; i++) {
uint32_t tmp_handle = gem_create(fd, 4096);
gem_exec[i].handle = tmp_handle;
}
gem_exec[i].handle = handle;
execbuf.buffer_count = i + 1;
/* figure out how many buffers we can exactly fit */
while (drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2,
&execbuf) != 0) {
i--;
gem_close(fd, gem_exec[i].handle);
gem_exec[i].handle = handle;
execbuf.buffer_count--;
printf("trying buffer count %i\n", i - 1);
}
printf("reduced buffer count to %i from %i\n",
i - 1, num_buffers);
/* double check that it works */
igt_assert(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2,
&execbuf) == 0);
i915_execbuffer2_set_context_id(execbuf, ctx_id2);
igt_assert(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2,
&execbuf) == 0);
gem_sync(fd, handle);
}
uint32_t handle;
uint32_t batch[2] = {0, MI_BATCH_BUFFER_END};
uint32_t ctx_id;
int fd;
igt_main
{
igt_skip_on_simulation();
igt_fixture {
fd = drm_open_any_render();
handle = gem_create(fd, 4096);
/* check that we can create contexts. */
ctx_id = gem_context_create(fd);
context_destroy(fd, ctx_id);
gem_write(fd, handle, 0, batch, sizeof(batch));
}
igt_subtest("basic") {
ctx_id = gem_context_create(fd);
igt_assert(exec(fd, handle, I915_EXEC_RENDER, ctx_id) == 0);
context_destroy(fd, ctx_id);
ctx_id = gem_context_create(fd);
igt_assert(exec(fd, handle, I915_EXEC_RENDER, ctx_id) == 0);
context_destroy(fd, ctx_id);
igt_assert(exec(fd, handle, I915_EXEC_RENDER, ctx_id) < 0);
}
igt_subtest("eviction")
big_exec(fd, handle, I915_EXEC_RENDER);
}
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