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/*
* Copyright © 2011,2012 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>
* Daniel Vetter <daniel.vetter@ffwll.ch>
*
*/
/*
* Testcase: Check whether we correctly invalidate the cs tlb
*
* Motivated by a strange bug on launchpad where *acth != ipehr, on snb notably
* where everything should be coherent by default.
*
* https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1063252
*/
#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 <drm.h>
IGT_TEST_DESCRIPTION("Check whether we correctly invalidate the cs tlb.");
#define LOCAL_I915_EXEC_VEBOX (4<<0)
#define BATCH_SIZE (1024*1024)
static int exec(int fd, uint32_t handle, int split,
uint64_t *gtt_ofs, unsigned ring_id)
{
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 gem_exec[1];
int ret = 0;
gem_exec[0].handle = handle;
gem_exec[0].relocation_count = 0;
gem_exec[0].relocs_ptr = 0;
gem_exec[0].alignment = 0;
gem_exec[0].offset = 0x00100000;
gem_exec[0].flags = 0;
gem_exec[0].rsvd1 = 0;
gem_exec[0].rsvd2 = 0;
execbuf.buffers_ptr = (uintptr_t)gem_exec;
execbuf.buffer_count = 1;
execbuf.batch_start_offset = 0;
execbuf.batch_len = 8*(split+1);
execbuf.cliprects_ptr = 0;
execbuf.num_cliprects = 0;
execbuf.DR1 = 0;
execbuf.DR4 = 0;
execbuf.flags = ring_id;
i915_execbuffer2_set_context_id(execbuf, 0);
execbuf.rsvd2 = 0;
ret = drmIoctl(fd,
DRM_IOCTL_I915_GEM_EXECBUFFER2,
&execbuf);
*gtt_ofs = gem_exec[0].offset;
return ret;
}
static void run_on_ring(int fd, unsigned ring_id, const char *ring_name)
{
uint32_t handle, handle_new;
uint64_t gtt_offset, gtt_offset_new;
uint32_t *batch_ptr, *batch_ptr_old;
unsigned split;
char buf[100];
int i;
gem_require_ring(fd, ring_id);
sprintf(buf, "testing %s cs tlb coherency: ", ring_name);
/* Shut up gcc, too stupid. */
batch_ptr_old = NULL;
handle = 0;
gtt_offset = 0;
for (split = 0; split < BATCH_SIZE/8 - 1; split += 2) {
igt_progress(buf, split, BATCH_SIZE/8 - 1);
handle_new = gem_create(fd, BATCH_SIZE);
batch_ptr = gem_mmap__cpu(fd, handle_new, 0, BATCH_SIZE,
PROT_READ | PROT_WRITE);
batch_ptr[split*2] = MI_BATCH_BUFFER_END;
for (i = split*2 + 2; i < BATCH_SIZE/8; i++)
batch_ptr[i] = 0xffffffff;
if (split > 0) {
gem_sync(fd, handle);
gem_close(fd, handle);
}
igt_assert_eq(exec(fd, handle_new, split, >t_offset_new, ring_id),
0);
if (split > 0) {
/* Check that we've managed to collide in the tlb. */
igt_assert(gtt_offset == gtt_offset_new);
/* We hang onto the storage of the old batch by keeping
* the cpu mmap around. */
munmap(batch_ptr_old, BATCH_SIZE);
}
handle = handle_new;
gtt_offset = gtt_offset_new;
batch_ptr_old = batch_ptr;
}
}
int fd;
igt_main
{
igt_skip_on_simulation();
igt_fixture {
fd = drm_open_driver(DRIVER_INTEL);
/* This test is very sensitive to residual gtt_mm noise from previous
* tests. Try to quiet thing down first. */
gem_quiescent_gpu(fd);
sleep(5); /* needs more serious ducttape */
}
igt_subtest("render")
run_on_ring(fd, I915_EXEC_RENDER, "render");
igt_subtest("bsd")
run_on_ring(fd, I915_EXEC_BSD, "bsd");
igt_subtest("blt")
run_on_ring(fd, I915_EXEC_BLT, "blt");
igt_subtest("vebox")
run_on_ring(fd, LOCAL_I915_EXEC_VEBOX, "vebox");
igt_fixture
close(fd);
}
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