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ntel-gpu-tools/tests/gem_mmap_gtt.c
Thomas Wood 804e11f40d lib: add a single include header 
Add a header that includes all the headers for the library. This allows
reorganisation of the library without affecting programs using it and
also simplifies the headers that need to be included to use the library.

Signed-off-by: Thomas Wood <thomas.wood@intel.com>
2015-08-21 09:37:10 +01:00

597 lines
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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>
*
*/
#define _GNU_SOURCE
#include "igt.h"
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <inttypes.h>
#include <pthread.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include "drm.h"
#ifndef PAGE_SIZE
#define PAGE_SIZE 4096
#endif
static int OBJECT_SIZE = 16*1024*1024;
static void
set_domain_gtt(int fd, uint32_t handle)
{
gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
}
static void *
mmap_bo(int fd, uint32_t handle)
{
void *ptr;
ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE);
igt_assert(ptr != MAP_FAILED);
return ptr;
}
static void *
create_pointer(int fd)
{
uint32_t handle;
void *ptr;
handle = gem_create(fd, OBJECT_SIZE);
ptr = mmap_bo(fd, handle);
gem_close(fd, handle);
return ptr;
}
static void
test_access(int fd)
{
uint32_t handle, flink, handle2;
struct drm_i915_gem_mmap_gtt mmap_arg;
int fd2;
handle = gem_create(fd, OBJECT_SIZE);
igt_assert(handle);
fd2 = drm_open_any();
/* Check that fd1 can mmap. */
mmap_arg.handle = handle;
igt_assert(drmIoctl(fd,
DRM_IOCTL_I915_GEM_MMAP_GTT,
&mmap_arg) == 0);
igt_assert(mmap64(0, OBJECT_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, mmap_arg.offset));
/* Check that the same offset on the other fd doesn't work. */
igt_assert(mmap64(0, OBJECT_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, fd2, mmap_arg.offset) == MAP_FAILED);
igt_assert(errno == EACCES);
flink = gem_flink(fd, handle);
igt_assert(flink);
handle2 = gem_open(fd2, flink);
igt_assert(handle2);
/* Recheck that it works after flink. */
/* Check that the same offset on the other fd doesn't work. */
igt_assert(mmap64(0, OBJECT_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, fd2, mmap_arg.offset));
}
static void
test_short(int fd)
{
struct drm_i915_gem_mmap_gtt mmap_arg;
int pages, p;
mmap_arg.handle = gem_create(fd, OBJECT_SIZE);
igt_assert(mmap_arg.handle);
igt_assert(drmIoctl(fd,
DRM_IOCTL_I915_GEM_MMAP_GTT,
&mmap_arg) == 0);
for (pages = 1; pages <= OBJECT_SIZE / PAGE_SIZE; pages <<= 1) {
uint8_t *r, *w;
w = mmap64(0, pages * PAGE_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, mmap_arg.offset);
igt_assert(w != MAP_FAILED);
r = mmap64(0, pages * PAGE_SIZE, PROT_READ,
MAP_SHARED, fd, mmap_arg.offset);
igt_assert(r != MAP_FAILED);
for (p = 0; p < pages; p++) {
w[p*PAGE_SIZE] = r[p*PAGE_SIZE];
w[p*PAGE_SIZE+(PAGE_SIZE-1)] =
r[p*PAGE_SIZE+(PAGE_SIZE-1)];
}
munmap(r, pages * PAGE_SIZE);
munmap(w, pages * PAGE_SIZE);
}
gem_close(fd, mmap_arg.handle);
}
static void
test_copy(int fd)
{
void *src, *dst;
/* copy from a fresh src to fresh dst to force pagefault on both */
src = create_pointer(fd);
dst = create_pointer(fd);
memcpy(dst, src, OBJECT_SIZE);
memcpy(src, dst, OBJECT_SIZE);
munmap(dst, OBJECT_SIZE);
munmap(src, OBJECT_SIZE);
}
enum test_read_write {
READ_BEFORE_WRITE,
READ_AFTER_WRITE,
};
static void
test_read_write(int fd, enum test_read_write order)
{
uint32_t handle;
void *ptr;
volatile uint32_t val = 0;
handle = gem_create(fd, OBJECT_SIZE);
ptr = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE);
igt_assert(ptr != MAP_FAILED);
if (order == READ_BEFORE_WRITE) {
val = *(uint32_t *)ptr;
*(uint32_t *)ptr = val;
} else {
*(uint32_t *)ptr = val;
val = *(uint32_t *)ptr;
}
gem_close(fd, handle);
munmap(ptr, OBJECT_SIZE);
}
static void
test_read_write2(int fd, enum test_read_write order)
{
uint32_t handle;
void *r, *w;
volatile uint32_t val = 0;
handle = gem_create(fd, OBJECT_SIZE);
r = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ);
igt_assert(r != MAP_FAILED);
w = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ | PROT_WRITE);
igt_assert(w != MAP_FAILED);
if (order == READ_BEFORE_WRITE) {
val = *(uint32_t *)r;
*(uint32_t *)w = val;
} else {
*(uint32_t *)w = val;
val = *(uint32_t *)r;
}
gem_close(fd, handle);
munmap(r, OBJECT_SIZE);
munmap(w, OBJECT_SIZE);
}
static void
test_write(int fd)
{
void *src;
uint32_t dst;
/* copy from a fresh src to fresh dst to force pagefault on both */
src = create_pointer(fd);
dst = gem_create(fd, OBJECT_SIZE);
gem_write(fd, dst, 0, src, OBJECT_SIZE);
gem_close(fd, dst);
munmap(src, OBJECT_SIZE);
}
static void
test_write_gtt(int fd)
{
uint32_t dst;
char *dst_gtt;
void *src;
dst = gem_create(fd, OBJECT_SIZE);
/* prefault object into gtt */
dst_gtt = mmap_bo(fd, dst);
set_domain_gtt(fd, dst);
memset(dst_gtt, 0, OBJECT_SIZE);
munmap(dst_gtt, OBJECT_SIZE);
src = create_pointer(fd);
gem_write(fd, dst, 0, src, OBJECT_SIZE);
gem_close(fd, dst);
munmap(src, OBJECT_SIZE);
}
static void
test_huge_bo(int fd, int huge, int tiling)
{
uint32_t bo;
char *ptr;
char *tiled_pattern;
char *linear_pattern;
uint64_t size, last_offset;
int pitch = tiling == I915_TILING_Y ? 128 : 512;
int i;
switch (huge) {
case -1:
size = gem_mappable_aperture_size() / 2;
break;
case 0:
size = gem_mappable_aperture_size() + PAGE_SIZE;
break;
default:
size = gem_aperture_size(fd) + PAGE_SIZE;
break;
}
intel_require_memory(1, size, CHECK_RAM);
last_offset = size - PAGE_SIZE;
/* Create pattern */
bo = gem_create(fd, PAGE_SIZE);
if (tiling)
gem_set_tiling(fd, bo, tiling, pitch);
linear_pattern = gem_mmap__gtt(fd, bo, PAGE_SIZE,
PROT_READ | PROT_WRITE);
igt_assert(linear_pattern);
for (i = 0; i < PAGE_SIZE; i++)
linear_pattern[i] = i;
tiled_pattern = gem_mmap__cpu(fd, bo, 0, PAGE_SIZE, PROT_READ);
igt_assert(tiled_pattern);
gem_set_domain(fd, bo, I915_GEM_DOMAIN_CPU | I915_GEM_DOMAIN_GTT, 0);
gem_close(fd, bo);
bo = gem_create(fd, size);
if (tiling)
gem_set_tiling(fd, bo, tiling, pitch);
/* Initialise first/last page through CPU mmap */
ptr = gem_mmap__cpu(fd, bo, 0, size, PROT_READ | PROT_WRITE);
memcpy(ptr, tiled_pattern, PAGE_SIZE);
memcpy(ptr + last_offset, tiled_pattern, PAGE_SIZE);
munmap(ptr, size);
/* Obtain mapping for the object through GTT. */
ptr = gem_mmap__gtt(fd, bo, size, PROT_READ | PROT_WRITE);
igt_require_f(ptr, "Huge BO GTT mapping not supported.\n");
set_domain_gtt(fd, bo);
/* Access through GTT should still provide the CPU written values. */
igt_assert(memcmp(ptr , linear_pattern, PAGE_SIZE) == 0);
igt_assert(memcmp(ptr + last_offset, linear_pattern, PAGE_SIZE) == 0);
gem_set_tiling(fd, bo, I915_TILING_NONE, 0);
igt_assert(memcmp(ptr , tiled_pattern, PAGE_SIZE) == 0);
igt_assert(memcmp(ptr + last_offset, tiled_pattern, PAGE_SIZE) == 0);
munmap(ptr, size);
gem_close(fd, bo);
munmap(tiled_pattern, PAGE_SIZE);
munmap(linear_pattern, PAGE_SIZE);
}
static void
test_huge_copy(int fd, int huge, int tiling_a, int tiling_b)
{
uint64_t huge_object_size, i;
uint32_t bo, *pattern_a, *pattern_b;
char *a, *b;
switch (huge) {
case -2:
huge_object_size = gem_mappable_aperture_size() / 4;
break;
case -1:
huge_object_size = gem_mappable_aperture_size() / 2;
break;
case 0:
huge_object_size = gem_mappable_aperture_size() + PAGE_SIZE;
break;
default:
huge_object_size = gem_aperture_size(fd) + PAGE_SIZE;
break;
}
intel_require_memory(2, huge_object_size, CHECK_RAM);
pattern_a = malloc(PAGE_SIZE);
for (i = 0; i < PAGE_SIZE/4; i++)
pattern_a[i] = i;
pattern_b = malloc(PAGE_SIZE);
for (i = 0; i < PAGE_SIZE/4; i++)
pattern_b[i] = ~i;
bo = gem_create(fd, huge_object_size);
if (tiling_a)
gem_set_tiling(fd, bo, tiling_a,
tiling_a == I915_TILING_Y ? 128 : 512);
a = gem_mmap__gtt(fd, bo, huge_object_size, PROT_READ | PROT_WRITE);
igt_require(a);
gem_close(fd, bo);
for (i = 0; i < huge_object_size / PAGE_SIZE; i++)
memcpy(a + PAGE_SIZE*i, pattern_a, PAGE_SIZE);
bo = gem_create(fd, huge_object_size);
if (tiling_b)
gem_set_tiling(fd, bo, tiling_b,
tiling_b == I915_TILING_Y ? 128 : 512);
b = gem_mmap__gtt(fd, bo, huge_object_size, PROT_READ | PROT_WRITE);
igt_require(b);
gem_close(fd, bo);
for (i = 0; i < huge_object_size / PAGE_SIZE; i++)
memcpy(b + PAGE_SIZE*i, pattern_b, PAGE_SIZE);
for (i = 0; i < huge_object_size / PAGE_SIZE; i++) {
if (i & 1)
memcpy(a + i *PAGE_SIZE, b + i*PAGE_SIZE, PAGE_SIZE);
else
memcpy(b + i *PAGE_SIZE, a + i*PAGE_SIZE, PAGE_SIZE);
}
for (i = 0; i < huge_object_size / PAGE_SIZE; i++) {
if (i & 1)
igt_assert(memcmp(pattern_b, a + PAGE_SIZE*i, PAGE_SIZE) == 0);
else
igt_assert(memcmp(pattern_a, a + PAGE_SIZE*i, PAGE_SIZE) == 0);
}
munmap(a, huge_object_size);
for (i = 0; i < huge_object_size / PAGE_SIZE; i++) {
if (i & 1)
igt_assert(memcmp(pattern_b, b + PAGE_SIZE*i, PAGE_SIZE) == 0);
else
igt_assert(memcmp(pattern_a, b + PAGE_SIZE*i, PAGE_SIZE) == 0);
}
munmap(b, huge_object_size);
free(pattern_a);
free(pattern_b);
}
static void
test_read(int fd)
{
void *dst;
uint32_t src;
/* copy from a fresh src to fresh dst to force pagefault on both */
dst = create_pointer(fd);
src = gem_create(fd, OBJECT_SIZE);
gem_read(fd, src, 0, dst, OBJECT_SIZE);
gem_close(fd, src);
munmap(dst, OBJECT_SIZE);
}
static void
test_write_cpu_read_gtt(int fd)
{
uint32_t handle;
uint32_t *src, *dst;
igt_require(gem_has_llc(fd));
handle = gem_create(fd, OBJECT_SIZE);
dst = gem_mmap(fd, handle, OBJECT_SIZE, PROT_READ);
igt_assert(dst != (uint32_t *)MAP_FAILED);
src = gem_mmap__cpu(fd, handle, 0, OBJECT_SIZE, PROT_WRITE);
igt_assert(src != (uint32_t *)MAP_FAILED);
gem_close(fd, handle);
memset(src, 0xaa, OBJECT_SIZE);
igt_assert(memcmp(dst, src, OBJECT_SIZE) == 0);
munmap(src, OBJECT_SIZE);
munmap(dst, OBJECT_SIZE);
}
struct thread_fault_concurrent {
pthread_t thread;
int id;
uint32_t **ptr;
};
static void *
thread_fault_concurrent(void *closure)
{
struct thread_fault_concurrent *t = closure;
uint32_t val = 0;
int n;
for (n = 0; n < 32; n++) {
if (n & 1)
*t->ptr[(n + t->id) % 32] = val;
else
val = *t->ptr[(n + t->id) % 32];
}
return NULL;
}
static void
test_fault_concurrent(int fd)
{
uint32_t *ptr[32];
struct thread_fault_concurrent thread[64];
int n;
for (n = 0; n < 32; n++) {
ptr[n] = create_pointer(fd);
}
for (n = 0; n < 64; n++) {
thread[n].ptr = ptr;
thread[n].id = n;
pthread_create(&thread[n].thread, NULL, thread_fault_concurrent, &thread[n]);
}
for (n = 0; n < 64; n++)
pthread_join(thread[n].thread, NULL);
for (n = 0; n < 32; n++) {
munmap(ptr[n], OBJECT_SIZE);
}
}
static void
run_without_prefault(int fd,
void (*func)(int fd))
{
igt_disable_prefault();
func(fd);
igt_enable_prefault();
}
int fd;
igt_main
{
if (igt_run_in_simulation())
OBJECT_SIZE = 1 * 1024 * 1024;
igt_fixture
fd = drm_open_any();
igt_subtest("basic")
test_access(fd);
igt_subtest("basic-short")
test_short(fd);
igt_subtest("basic-copy")
test_copy(fd);
igt_subtest("basic-read")
test_read(fd);
igt_subtest("basic-write")
test_write(fd);
igt_subtest("basic-write-gtt")
test_write_gtt(fd);
igt_subtest("basic-read-write")
test_read_write(fd, READ_BEFORE_WRITE);
igt_subtest("basic-write-read")
test_read_write(fd, READ_AFTER_WRITE);
igt_subtest("basic-read-write-distinct")
test_read_write2(fd, READ_BEFORE_WRITE);
igt_subtest("basic-write-read-distinct")
test_read_write2(fd, READ_AFTER_WRITE);
igt_subtest("fault-concurrent")
test_fault_concurrent(fd);
igt_subtest("basic-read-no-prefault")
run_without_prefault(fd, test_read);
igt_subtest("basic-write-no-prefault")
run_without_prefault(fd, test_write);
igt_subtest("basic-write-gtt-no-prefault")
run_without_prefault(fd, test_write_gtt);
igt_subtest("basic-write-cpu-read-gtt")
test_write_cpu_read_gtt(fd);
igt_subtest("basic-small-bo")
test_huge_bo(fd, -1, I915_TILING_NONE);
igt_subtest("basic-small-bo-tiledX")
test_huge_bo(fd, -1, I915_TILING_X);
igt_subtest("basic-small-bo-tiledY")
test_huge_bo(fd, -1, I915_TILING_Y);
igt_subtest("big-bo")
test_huge_bo(fd, 0, I915_TILING_NONE);
igt_subtest("big-bo-tiledX")
test_huge_bo(fd, 0, I915_TILING_X);
igt_subtest("big-bo-tiledY")
test_huge_bo(fd, 0, I915_TILING_Y);
igt_subtest("huge-bo")
test_huge_bo(fd, 1, I915_TILING_NONE);
igt_subtest("huge-bo-tiledX")
test_huge_bo(fd, 1, I915_TILING_X);
igt_subtest("huge-bo-tiledY")
test_huge_bo(fd, 1, I915_TILING_Y);
igt_subtest("basic-small-copy")
test_huge_copy(fd, -2, I915_TILING_NONE, I915_TILING_NONE);
igt_subtest("basic-small-copy-XY")
test_huge_copy(fd, -2, I915_TILING_X, I915_TILING_Y);
igt_subtest("medium-copy")
test_huge_copy(fd, -1, I915_TILING_NONE, I915_TILING_NONE);
igt_subtest("medium-copy-XY")
test_huge_copy(fd, -1, I915_TILING_X, I915_TILING_Y);
igt_subtest("big-copy")
test_huge_copy(fd, 0, I915_TILING_NONE, I915_TILING_NONE);
igt_subtest("big-copy-XY")
test_huge_copy(fd, 0, I915_TILING_X, I915_TILING_Y);
igt_subtest("huge-copy")
test_huge_copy(fd, 1, I915_TILING_NONE, I915_TILING_NONE);
igt_subtest("huge-copy-XY")
test_huge_copy(fd, 1, I915_TILING_X, I915_TILING_Y);
igt_fixture
close(fd);
}
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