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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:
* Chris Wilson <chris@chris-wilson.co.uk>
*
*/
/* Exercises the basic execbuffer using the handle LUT interface */
#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 "drm.h"
#include "drmtest.h"
#include "i915/gem_create.h"
#include "i915/gem_mman.h"
#include "igt_debugfs.h"
#include "intel_reg.h"
#include "ioctl_wrappers.h"
#define SKIP_RELOC 0x1
#define NO_RELOC 0x2
#define CYCLE_BATCH 0x4
#define LUT 0x10
#define SEQUENTIAL_OFFSET 0x20
#define REVERSE_OFFSET 0x40
#define RANDOM_OFFSET 0x80
static uint32_t
hars_petruska_f54_1_random (void)
{
static uint32_t state = 0x12345678;
#define rol(x,k) ((x << k) | (x >> (32-k)))
return state = (state ^ rol (state, 5) ^ rol (state, 24)) + 0x37798849;
#undef rol
}
#define ELAPSED(a,b) (1e6*((b)->tv_sec - (a)->tv_sec) + ((b)->tv_usec - (a)->tv_usec))
static int run(unsigned batch_size,
unsigned flags,
int num_objects,
int num_relocs, int reps)
{
uint32_t batch[2] = {MI_BATCH_BUFFER_END};
uint32_t cycle[16];
int fd, n, count, c, size = 0;
struct drm_i915_gem_relocation_entry *reloc = NULL;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 *objects;
struct timeval start, end;
uint32_t reloc_handle = 0;
struct drm_i915_gem_exec_object2 *gem_exec;
struct drm_i915_gem_relocation_entry *mem_reloc = NULL;
int *target;
gem_exec = calloc(sizeof(*gem_exec), num_objects + 1);
mem_reloc = calloc(sizeof(*mem_reloc), num_relocs);
target = calloc(sizeof(*target), num_relocs);
fd = drm_open_driver(DRIVER_INTEL);
for (n = 0; n < num_objects; n++)
gem_exec[n].handle = gem_create(fd, 4096);
for (n = 0; n < 16; n++) {
cycle[n] = gem_create(fd, batch_size);
gem_write(fd, cycle[n], 0, batch, sizeof(batch));
}
gem_exec[num_objects].handle = cycle[c = 0];
for (n = 0; n < num_relocs; n++) {
mem_reloc[n].offset = 1024;
mem_reloc[n].read_domains = I915_GEM_DOMAIN_RENDER;
}
for (n = 0; n < num_relocs; n++) {
if (flags & SEQUENTIAL_OFFSET)
mem_reloc[n].offset = 8 + (8*n % (batch_size - 16));
else if (flags & REVERSE_OFFSET)
mem_reloc[n].offset = batch_size - 8 - (8*n % (batch_size - 16));
else if (flags & RANDOM_OFFSET)
mem_reloc[n].offset = 8 +
8*hars_petruska_f54_1_random() % (batch_size - 16);
else
mem_reloc[n].offset = 1024;
mem_reloc[n].read_domains = I915_GEM_DOMAIN_RENDER;
}
if (num_relocs) {
size = ALIGN(sizeof(*mem_reloc)*num_relocs, 4096);
reloc_handle = gem_create(fd, size);
reloc = __gem_mmap__cpu(fd, reloc_handle, 0, size, PROT_READ | PROT_WRITE);
memcpy(reloc, mem_reloc, sizeof(*mem_reloc)*num_relocs);
munmap(reloc, size);
reloc = mem_reloc;
}
gem_exec[num_objects].relocation_count = num_relocs;
gem_exec[num_objects].relocs_ptr = (uintptr_t)reloc;
objects = gem_exec;
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = (uintptr_t)objects;
execbuf.buffer_count = num_objects + 1;
if (flags & LUT)
execbuf.flags |= I915_EXEC_HANDLE_LUT;
if (flags & NO_RELOC)
execbuf.flags |= I915_EXEC_NO_RELOC;
for (n = 0; n < num_relocs; n++) {
target[n] = hars_petruska_f54_1_random() % num_objects;
if (flags & LUT)
reloc[n].target_handle = target[n];
else
reloc[n].target_handle = objects[target[n]].handle;
reloc[n].presumed_offset = -1;
}
gem_execbuf(fd, &execbuf);
while (reps--) {
gettimeofday(&start, NULL);
for (count = 0; count < 1000; count++) {
if ((flags & SKIP_RELOC) == 0) {
for (n = 0; n < num_relocs; n++)
reloc[n].presumed_offset = -1;
if (flags & CYCLE_BATCH) {
c = (c + 1) % 16;
gem_exec[num_objects].handle = cycle[c];
}
}
gem_execbuf(fd, &execbuf);
}
gettimeofday(&end, NULL);
printf("%.3f\n", ELAPSED(&start, &end));
}
return 0;
}
int main(int argc, char **argv)
{
unsigned num_objects = 1, num_relocs = 0, flags = 0;
unsigned size = 4096;
int reps = 13;
int c;
while ((c = getopt (argc, argv, "b:r:s:e:l:m:o:")) != -1) {
switch (c) {
case 'l':
reps = atoi(optarg);
if (reps < 1)
reps = 1;
break;
case 's':
size = atoi(optarg);
if (size < 4096)
size = 4096;
size = ALIGN(size, 4096);
break;
case 'e':
if (strcmp(optarg, "busy") == 0) {
flags |= 0;
} else if (strcmp(optarg, "cyclic") == 0) {
flags |= CYCLE_BATCH;
} else if (strcmp(optarg, "skip") == 0) {
flags |= SKIP_RELOC;
} else if (strcmp(optarg, "none") == 0) {
flags |= SKIP_RELOC | NO_RELOC;
} else {
abort();
}
break;
case 'm':
if (strcmp(optarg, "old") == 0) {
flags |= 0;
} else if (strcmp(optarg, "lut") == 0) {
flags |= LUT;
} else {
abort();
}
break;
case 'o':
if (strcmp(optarg, "constant") == 0) {
flags |= 0;
} else if (strcmp(optarg, "sequential") == 0) {
flags |= SEQUENTIAL_OFFSET;
} else if (strcmp(optarg, "reverse") == 0) {
flags |= REVERSE_OFFSET;
} else if (strcmp(optarg, "random") == 0) {
flags |= RANDOM_OFFSET;
} else {
abort();
}
break;
case 'b':
num_objects = atoi(optarg);
if (num_objects < 1)
num_objects = 1;
break;
case 'r':
num_relocs = atoi(optarg);
break;
}
}
return run(size, flags, num_objects, num_relocs, reps);
}