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/*
* 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 "igt.h"
#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 <time.h>
#include "drm.h"
#define LOCAL_I915_EXEC_NO_RELOC (1<<11)
#define LOCAL_I915_EXEC_HANDLE_LUT (1<<12)
#define INTERRUPTIBLE 1
static int __gem_context_create(int fd, uint32_t *ctx_id)
{
struct drm_i915_gem_context_create arg;
int ret = 0;
memset(&arg, 0, sizeof(arg));
if (drmIoctl(fd, DRM_IOCTL_I915_GEM_CONTEXT_CREATE, &arg))
ret = -errno;
*ctx_id = arg.ctx_id;
return ret;
}
static double elapsed(const struct timespec *start, const struct timespec *end)
{
return ((end->tv_sec - start->tv_sec) +
(end->tv_nsec - start->tv_nsec)*1e-9);
}
static void single(int fd, uint32_t handle,
const struct intel_execution_engine *e,
unsigned flags,
const int ncpus)
{
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 obj;
struct drm_i915_gem_relocation_entry reloc;
uint32_t contexts[64];
int n;
gem_require_ring(fd, e->exec_id | e->flags);
igt_require(__gem_context_create(fd, &contexts[0]) == 0);
for (n = 1; n < 64; n++)
contexts[n] = gem_context_create(fd);
memset(&obj, 0, sizeof(obj));
obj.handle = handle;
if (flags & INTERRUPTIBLE) {
/* Be tricksy and force a relocation every batch so that
* we don't emit the batch but just do MI_SET_CONTEXT
*/
memset(&reloc, 0, sizeof(reloc));
reloc.offset = 1024;
reloc.read_domains = I915_GEM_DOMAIN_INSTRUCTION;
obj.relocs_ptr = (uintptr_t)&reloc;
obj.relocation_count = 1;
}
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = (uintptr_t)&obj;
execbuf.buffer_count = 1;
execbuf.rsvd1 = contexts[0];
execbuf.flags = e->exec_id | e->flags;
execbuf.flags |= LOCAL_I915_EXEC_HANDLE_LUT;
execbuf.flags |= LOCAL_I915_EXEC_NO_RELOC;
igt_require(__gem_execbuf(fd, &execbuf) == 0);
if (__gem_execbuf(fd, &execbuf)) {
execbuf.flags = e->exec_id | e->flags;
reloc.target_handle = obj.handle;
gem_execbuf(fd, &execbuf);
}
gem_sync(fd, handle);
igt_fork(child, ncpus) {
struct timespec start, now;
unsigned int count = 0;
clock_gettime(CLOCK_MONOTONIC, &start);
do {
igt_while_interruptible(flags & INTERRUPTIBLE) {
for (int loop = 0; loop < 1024; loop++) {
execbuf.rsvd1 = contexts[loop % 64];
reloc.presumed_offset = 0;
gem_execbuf(fd, &execbuf);
}
count += 1024;
}
clock_gettime(CLOCK_MONOTONIC, &now);
} while (elapsed(&start, &now) < 20.);
gem_sync(fd, handle);
clock_gettime(CLOCK_MONOTONIC, &now);
igt_info("[%d] %s: %'u cycles: %.3fus%s\n",
child, e->name, count, elapsed(&start, &now)*1e6 / count,
flags & INTERRUPTIBLE ? " (interruptible)" : "");
}
igt_waitchildren();
for (n = 0; n < 64; n++)
gem_context_destroy(fd, contexts[n]);
}
igt_main
{
const int ncpus = sysconf(_SC_NPROCESSORS_ONLN);
const struct intel_execution_engine *e;
uint32_t handle = 0;
int fd = -1;
igt_fixture {
const uint32_t bbe = MI_BATCH_BUFFER_END;
fd = drm_open_driver(DRIVER_INTEL);
handle = gem_create(fd, 4096);
gem_write(fd, handle, 0, &bbe, sizeof(bbe));
igt_fork_hang_detector(fd);
}
for (e = intel_execution_engines; e->name; e++) {
igt_subtest_f("%s%s", e->exec_id == 0 ? "basic-" : "", e->name)
single(fd, handle, e, 0, 1);
igt_subtest_f("%s-interruptible", e->name)
single(fd, handle, e, INTERRUPTIBLE, 1);
igt_subtest_f("forked-%s", e->name)
single(fd, handle, e, 0, ncpus);
igt_subtest_f("forked-%s-interruptible", e->name)
single(fd, handle, e, INTERRUPTIBLE, ncpus);
}
igt_fixture {
igt_stop_hang_detector();
gem_close(fd, handle);
close(fd);
}
}
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