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ntel-gpu-tools/tests/gem_pwrite_pread.c
Chris Wilson d9bc787673 gem_pwrite_pread: Use mmap to bypass pwrite/pread for comparison 
Just to help sanity test alternate paths.
2013-08-06 18:03:18 +01:00

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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 <unistd.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <fcntl.h>
#include <inttypes.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/time.h>
#include "drm.h"
#include "i915_drm.h"
#include "drmtest.h"
#include "intel_bufmgr.h"
#include "intel_batchbuffer.h"
#include "intel_gpu_tools.h"
#define OBJECT_SIZE 16384
#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 void copy(int fd, uint32_t src, uint32_t dst, void *buf, int len, int loops)
{
struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
};
struct drm_i915_gem_exec_object2 exec[] = {
{ src },
{ dst },
{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
};
uint32_t batch[] = {
COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
0xcc << 16 | 1 << 25 | 1 << 24 | len,
0,
1 << 16 | (len / 4),
0, /* dst */
0,
len,
0, /* src */
MI_BATCH_BUFFER_END,
0
};
struct drm_i915_gem_execbuffer2 execbuf = {
(uintptr_t)exec, 3,
0, sizeof(batch),
0, 0, 0, 0,
HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
};
gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
while (loops--) {
gem_write(fd, src, 0, buf, len);
do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
gem_read(fd, dst, 0, buf, len);
}
gem_close(fd, exec[2].handle);
}
static void as_gtt_mmap(int fd, uint32_t src, uint32_t dst, void *buf, int len, int loops)
{
struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
};
struct drm_i915_gem_exec_object2 exec[] = {
{ src },
{ dst },
{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
};
uint32_t batch[] = {
COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
0xcc << 16 | 1 << 25 | 1 << 24 | len,
0,
1 << 16 | (len / 4),
0, /* dst */
0,
len,
0, /* src */
MI_BATCH_BUFFER_END,
0
};
struct drm_i915_gem_execbuffer2 execbuf = {
(uintptr_t)exec, 3,
0, sizeof(batch),
0, 0, 0, 0,
HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
};
uint32_t *src_ptr, *dst_ptr;
gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
src_ptr = gem_mmap__gtt(fd, src, OBJECT_SIZE, PROT_WRITE);
dst_ptr = gem_mmap__gtt(fd, dst, OBJECT_SIZE, PROT_READ);
while (loops--) {
gem_set_domain(fd, src,
I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
memcpy(src_ptr, buf, len);
do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
gem_set_domain(fd, dst,
I915_GEM_DOMAIN_GTT, 0);
memcpy(buf, dst_ptr, len);
}
munmap(dst_ptr, len);
munmap(src_ptr, len);
gem_close(fd, exec[2].handle);
}
static void as_cpu_mmap(int fd, uint32_t src, uint32_t dst, void *buf, int len, int loops)
{
struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
};
struct drm_i915_gem_exec_object2 exec[] = {
{ src },
{ dst },
{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
};
uint32_t batch[] = {
COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
0xcc << 16 | 1 << 25 | 1 << 24 | len,
0,
1 << 16 | (len / 4),
0, /* dst */
0,
len,
0, /* src */
MI_BATCH_BUFFER_END,
0
};
struct drm_i915_gem_execbuffer2 execbuf = {
(uintptr_t)exec, 3,
0, sizeof(batch),
0, 0, 0, 0,
HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
};
uint32_t *src_ptr, *dst_ptr;
gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
src_ptr = gem_mmap__cpu(fd, src, OBJECT_SIZE, PROT_WRITE);
dst_ptr = gem_mmap__cpu(fd, dst, OBJECT_SIZE, PROT_READ);
while (loops--) {
gem_set_domain(fd, src,
I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
memcpy(src_ptr, buf, len);
do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
gem_set_domain(fd, dst,
I915_GEM_DOMAIN_CPU, 0);
memcpy(buf, dst_ptr, len);
}
munmap(dst_ptr, len);
munmap(src_ptr, len);
gem_close(fd, exec[2].handle);
}
static void test_copy(int fd, uint32_t src, uint32_t dst, uint32_t *buf, int len)
{
struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
};
struct drm_i915_gem_exec_object2 exec[] = {
{ src },
{ dst },
{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
};
uint32_t batch[] = {
COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
0xcc << 16 | 1 << 25 | 1 << 24 | len,
0,
1 << 16 | (len / 4),
0, /* dst */
0,
len,
0, /* src */
MI_BATCH_BUFFER_END,
0
};
struct drm_i915_gem_execbuffer2 execbuf = {
(uintptr_t)exec, 3,
0, sizeof(batch),
0, 0, 0, 0,
HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
};
int i;
gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
for (i = 0; i < len/4; i++)
buf[i] = i;
gem_write(fd, src, 0, buf, len);
memset(buf, 0, len);
do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
gem_read(fd, dst, 0, buf, len);
gem_close(fd, exec[2].handle);
for (i = 0; i < len/4; i++)
assert(buf[i] == i);
}
static void test_as_gtt_mmap(int fd, uint32_t src, uint32_t dst, int len)
{
struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
};
struct drm_i915_gem_exec_object2 exec[] = {
{ src },
{ dst },
{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
};
uint32_t batch[] = {
COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
0xcc << 16 | 1 << 25 | 1 << 24 | len,
0,
1 << 16 | (len / 4),
0, /* dst */
0,
len,
0, /* src */
MI_BATCH_BUFFER_END,
0
};
struct drm_i915_gem_execbuffer2 execbuf = {
(uintptr_t)exec, 3,
0, sizeof(batch),
0, 0, 0, 0,
HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
};
uint32_t *src_ptr, *dst_ptr;
int i;
gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
src_ptr = gem_mmap__gtt(fd, src, OBJECT_SIZE, PROT_WRITE);
dst_ptr = gem_mmap__gtt(fd, dst, OBJECT_SIZE, PROT_READ);
gem_set_domain(fd, src, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
for (i = 0; i < len/4; i++)
src_ptr[i] = i;
do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
gem_close(fd, exec[2].handle);
gem_set_domain(fd, dst, I915_GEM_DOMAIN_GTT, 0);
for (i = 0; i < len/4; i++)
assert(dst_ptr[i] == i);
munmap(dst_ptr, len);
munmap(src_ptr, len);
}
static void test_as_cpu_mmap(int fd, uint32_t src, uint32_t dst, int len)
{
struct drm_i915_gem_relocation_entry reloc[] = {
{ dst, 0, 4*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER },
{ src, 0, 7*sizeof(uint32_t), 0, I915_GEM_DOMAIN_RENDER, 0 },
};
struct drm_i915_gem_exec_object2 exec[] = {
{ src },
{ dst },
{ gem_create(fd, 4096), 2, (uintptr_t)reloc }
};
uint32_t batch[] = {
COPY_BLT_CMD | BLT_WRITE_ALPHA | BLT_WRITE_RGB,
0xcc << 16 | 1 << 25 | 1 << 24 | len,
0,
1 << 16 | (len / 4),
0, /* dst */
0,
len,
0, /* src */
MI_BATCH_BUFFER_END,
0
};
struct drm_i915_gem_execbuffer2 execbuf = {
(uintptr_t)exec, 3,
0, sizeof(batch),
0, 0, 0, 0,
HAS_BLT_RING(intel_get_drm_devid(fd)) ? I915_EXEC_BLT : 0,
};
uint32_t *src_ptr, *dst_ptr;
int i;
gem_write(fd, exec[2].handle, 0, batch, sizeof(batch));
src_ptr = gem_mmap__cpu(fd, src, OBJECT_SIZE, PROT_WRITE);
dst_ptr = gem_mmap__cpu(fd, dst, OBJECT_SIZE, PROT_READ);
gem_set_domain(fd, src, I915_GEM_DOMAIN_CPU, I915_GEM_DOMAIN_CPU);
for (i = 0; i < len/4; i++)
src_ptr[i] = i;
do_or_die(drmIoctl(fd, DRM_IOCTL_I915_GEM_EXECBUFFER2, &execbuf));
gem_close(fd, exec[2].handle);
gem_set_domain(fd, dst, I915_GEM_DOMAIN_CPU, 0);
for (i = 0; i < len/4; i++)
assert(dst_ptr[i] == i);
munmap(dst_ptr, len);
munmap(src_ptr, len);
}
static double elapsed(const struct timeval *start,
const struct timeval *end,
int loop)
{
return (1e6*(end->tv_sec - start->tv_sec) + (end->tv_usec - start->tv_usec))/loop;
}
static const char *bytes_per_sec(char *buf, double v)
{
const char *order[] = {
"",
"KiB",
"MiB",
"GiB",
"TiB",
NULL,
}, **o = order;
while (v > 1000 && o[1]) {
v /= 1000;
o++;
}
sprintf(buf, "%.1f%s/s", v, *o);
return buf;
}
int main(int argc, char **argv)
{
int object_size = 0;
uint32_t buf[20];
uint32_t *tmp, src, dst;
int fd, count;
drmtest_skip_on_simulation();
if (argc > 1)
object_size = atoi(argv[1]);
if (object_size == 0)
object_size = OBJECT_SIZE;
object_size = (object_size + 3) & -4;
fd = drm_open_any();
dst = gem_create(fd, object_size);
src = gem_create(fd, object_size);
tmp = malloc(object_size);
gem_set_cacheing(fd, src, 0);
gem_set_cacheing(fd, dst, 0);
test_copy(fd, src, dst, tmp, object_size);
for (count = 1; count <= 1<<17; count <<= 1) {
struct timeval start, end;
gettimeofday(&start, NULL);
copy(fd, src, dst, tmp, object_size, count);
gettimeofday(&end, NULL);
printf("Time to uncached copy %d bytes x %6d: %7.3fµs, %s\n",
object_size, count,
elapsed(&start, &end, count),
bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
fflush(stdout);
}
test_as_gtt_mmap(fd, src, dst, object_size);
for (count = 1; count <= 1<<17; count <<= 1) {
struct timeval start, end;
gettimeofday(&start, NULL);
as_gtt_mmap(fd, src, dst, tmp, object_size, count);
gettimeofday(&end, NULL);
printf("** mmap uncached copy %d bytes x %6d: %7.3fµs, %s\n",
object_size, count,
elapsed(&start, &end, count),
bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
fflush(stdout);
}
gem_set_cacheing(fd, src, 1);
gem_set_cacheing(fd, dst, 1);
test_copy(fd, src, dst, tmp, object_size);
for (count = 1; count <= 1<<17; count <<= 1) {
struct timeval start, end;
gettimeofday(&start, NULL);
copy(fd, src, dst, tmp, object_size, count);
gettimeofday(&end, NULL);
printf("Time to snooped copy %d bytes x %6d: %7.3fµs, %s\n",
object_size, count,
elapsed(&start, &end, count),
bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
fflush(stdout);
}
test_as_cpu_mmap(fd, src, dst, object_size);
for (count = 1; count <= 1<<17; count <<= 1) {
struct timeval start, end;
gettimeofday(&start, NULL);
as_cpu_mmap(fd, src, dst, tmp, object_size, count);
gettimeofday(&end, NULL);
printf("** mmap snooped copy %d bytes x %6d: %7.3fµs, %s\n",
object_size, count,
elapsed(&start, &end, count),
bytes_per_sec((char *)buf, object_size/elapsed(&start, &end, count)*1e6));
fflush(stdout);
}
free(tmp);
gem_close(fd, src);
gem_close(fd, dst);
close(fd);
return 0;
}
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