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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 <math.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <time.h>
#include "drm.h"
#include "i915/gem_create.h"
#define COPY_BLT_CMD (2<<29|0x53<<22|0x6)
#define BLT_WRITE_ALPHA (1<<21)
#define BLT_WRITE_RGB (1<<20)
#define BLT_SRC_TILED (1<<15)
#define BLT_DST_TILED (1<<11)
static int has_64bit_reloc;
static double
elapsed(const struct timespec *start, const struct timespec *end)
{
return (end->tv_sec - start->tv_sec) + 1e-9*(end->tv_nsec - start->tv_nsec);
}
static int baseline(int fd, struct drm_i915_gem_execbuffer2 execbuf, int milliseconds)
{
struct timespec start, end;
int count = 0;
clock_gettime(CLOCK_MONOTONIC, &start);
do {
gem_execbuf(fd, &execbuf);
count++;
clock_gettime(CLOCK_MONOTONIC, &end);
if (elapsed(&start, &end) > (milliseconds / 1000.))
break;
} while (1);
return count;
}
static int gem_linear_blt(int fd,
uint32_t *batch,
int offset,
uint32_t src,
uint32_t dst,
uint32_t length,
struct drm_i915_gem_relocation_entry *reloc)
{
uint32_t *b = batch + offset/4;
int height = length / (16 * 1024);
igt_assert_lte(height, 1 << 16);
if (height) {
int i = 0;
b[i++] = COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB;
if (has_64bit_reloc)
b[i-1]+=2;
b[i++] = 0xcc << 16 | 1 << 25 | 1 << 24 | (16*1024);
b[i++] = 0;
b[i++] = height << 16 | (4*1024);
b[i++] = 0;
reloc->offset = (b-batch+4) * sizeof(uint32_t);
reloc->delta = 0;
reloc->target_handle = dst;
reloc->read_domains = I915_GEM_DOMAIN_RENDER;
reloc->write_domain = I915_GEM_DOMAIN_RENDER;
reloc->presumed_offset = 0;
reloc++;
if (has_64bit_reloc)
b[i++] = 0; /* FIXME */
b[i++] = 0;
b[i++] = 16*1024;
b[i++] = 0;
reloc->offset = (b-batch+7) * sizeof(uint32_t);
if (has_64bit_reloc)
reloc->offset += sizeof(uint32_t);
reloc->delta = 0;
reloc->target_handle = src;
reloc->read_domains = I915_GEM_DOMAIN_RENDER;
reloc->write_domain = 0;
reloc->presumed_offset = 0;
reloc++;
if (has_64bit_reloc)
b[i++] = 0; /* FIXME */
b += i;
length -= height * 16*1024;
}
if (length) {
int i = 0;
b[i++] = COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB;
if (has_64bit_reloc)
b[i-1]+=2;
b[i++] = 0xcc << 16 | 1 << 25 | 1 << 24 | (16*1024);
b[i++] = height << 16;
b[i++] = (1+height) << 16 | (length / 4);
b[i++] = 0;
reloc->offset = (b-batch+4) * sizeof(uint32_t);
reloc->delta = 0;
reloc->target_handle = dst;
reloc->read_domains = I915_GEM_DOMAIN_RENDER;
reloc->write_domain = I915_GEM_DOMAIN_RENDER;
reloc->presumed_offset = 0;
reloc++;
if (has_64bit_reloc)
b[i++] = 0; /* FIXME */
b[i++] = height << 16;
b[i++] = 16*1024;
b[i++] = 0;
reloc->offset = (b-batch+7) * sizeof(uint32_t);
if (has_64bit_reloc)
reloc->offset += sizeof(uint32_t);
reloc->delta = 0;
reloc->target_handle = src;
reloc->read_domains = I915_GEM_DOMAIN_RENDER;
reloc->write_domain = 0;
reloc->presumed_offset = 0;
reloc++;
if (has_64bit_reloc)
b[i++] = 0; /* FIXME */
b += i;
}
b[0] = MI_BATCH_BUFFER_END;
b[1] = 0;
return (b+2 - batch) * sizeof(uint32_t);
}
#define SYNC 0x1
#define NOCMD 0x2
static int run(int object, int batch, int time, int reps, int ncpus, unsigned flags)
{
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 exec[3];
struct drm_i915_gem_relocation_entry *reloc;
uint32_t *buf, handle, src, dst;
int fd, len, gen, size, nreloc;
int ring, count;
double *shared;
shared = mmap(0, 4096, PROT_WRITE, MAP_SHARED | MAP_ANON, -1, 0);
size = ALIGN(batch * 64, 4096);
reloc = malloc(sizeof(*reloc)*size/32*2);
fd = drm_open_driver(DRIVER_INTEL);
handle = gem_create(fd, size);
buf = gem_mmap__cpu(fd, handle, 0, size, PROT_WRITE);
gen = intel_gen(intel_get_drm_devid(fd));
has_64bit_reloc = gen >= 8;
src = gem_create(fd, ALIGN(object, 4096));
dst = gem_create(fd, ALIGN(object, 4096));
len = gem_linear_blt(fd, buf, 0, 0, 1, object, reloc);
if (has_64bit_reloc)
nreloc = len > 56 ? 4 : 2;
else
nreloc = len > 40 ? 4 : 2;
memset(exec, 0, sizeof(exec));
exec[0].handle = src;
exec[1].handle = dst;
exec[2].handle = handle;
exec[2].relocs_ptr = (uintptr_t)reloc;
exec[2].relocation_count = nreloc;
ring = 0;
if (gen >= 6)
ring = I915_EXEC_BLT;
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = (uintptr_t)exec;
execbuf.buffer_count = 3;
execbuf.batch_len = len;
execbuf.flags = ring;
execbuf.flags |= I915_EXEC_HANDLE_LUT;
if (__gem_execbuf(fd, &execbuf)) {
gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
len = gem_linear_blt(fd, buf, 0, src, dst, object, reloc);
igt_assert(len == execbuf.batch_len);
execbuf.flags = ring;
gem_execbuf(fd, &execbuf);
}
gem_sync(fd, handle);
if (batch > 1) {
if (execbuf.flags & I915_EXEC_HANDLE_LUT) {
src = 0;
dst = 1;
}
gem_set_domain(fd, handle, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
for (int i = 1; i < batch; i++) {
len = gem_linear_blt(fd, buf, len - 8,
src, dst, object,
reloc + nreloc * i);
}
exec[2].relocation_count = nreloc * batch;
execbuf.batch_len = len;
gem_execbuf(fd, &execbuf);
gem_sync(fd, handle);
}
if (execbuf.flags & I915_EXEC_HANDLE_LUT)
execbuf.flags |= I915_EXEC_NO_RELOC;
/* Guess how many loops we need for 0.1s */
count = baseline(fd, execbuf, 100) / ncpus;
if (flags & SYNC) {
time *= count / 2;
count = 1;
}
if (flags & NOCMD) {
drm_i915_getparam_t gp;
int v;
gp.param = I915_PARAM_CMD_PARSER_VERSION;
gp.value = &v;
drmIoctl(fd, DRM_IOCTL_I915_GETPARAM, &gp);
if (v < 1)
return 77;
execbuf.batch_len = 0;
}
while (reps--) {
memset(shared, 0, 4096);
igt_fork(child, ncpus) {
double min = HUGE_VAL;
for (int s = 0; s <= time / 100; s++) {
struct timespec start, end;
double t;
clock_gettime(CLOCK_MONOTONIC, &start);
for (int loop = 0; loop < count; loop++)
gem_execbuf(fd, &execbuf);
gem_sync(fd, handle);
clock_gettime(CLOCK_MONOTONIC, &end);
t = elapsed(&start, &end);
if (t < min)
min = t;
}
shared[child] = object/(1024*1024.)*batch*count/min;
}
igt_waitchildren();
for (int child = 0; child < ncpus; child++)
shared[ncpus] += shared[child];
printf("%7.3f\n", shared[ncpus] / ncpus);
}
close(fd);
return 0;
}
int main(int argc, char **argv)
{
int size = 1024*1024;
int reps = 13;
int time = 2000;
int ncpus = 1;
int batch = 1;
unsigned flags = 0;
int c;
while ((c = getopt (argc, argv, "CSs:b:r:t:f")) != -1) {
switch (c) {
case 's':
size = atoi(optarg);
size = ALIGN(size, 4);
if (size < 4)
size = 4;
break;
case 'S':
flags |= SYNC;
break;
case 'C':
flags |= NOCMD;
break;
case 't':
time = atoi(optarg);
if (time < 1)
time = 1;
break;
case 'r':
reps = atoi(optarg);
if (reps < 1)
reps = 1;
break;
case 'b':
batch = atoi(optarg);
if (batch < 1)
batch = 1;
break;
case 'f':
ncpus = sysconf(_SC_NPROCESSORS_ONLN);
break;
default:
break;
}
}
return run(size, batch, time, reps, ncpus, flags);
}