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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:
* Daniel Vetter <daniel.vetter@ffwll.ch> (based on gem_storedw_*.c)
*
*/
#include "igt.h"
IGT_TEST_DESCRIPTION("Basic check of ring<->ring write synchronisation.");
/*
* Testcase: Basic check of ring<->ring sync using a dummy reloc
*
* Extremely efficient at catching missed irqs with semaphores=0 ...
*/
static void
sync_loop(int fd)
{
const uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 object[2];
struct drm_i915_gem_relocation_entry reloc[1];
unsigned engines[16];
unsigned nengine;
unsigned engine;
int i;
nengine = 0;
for_each_physical_engine(fd, engine)
engines[nengine++] = engine;
igt_require(nengine);
memset(object, 0, sizeof(object));
object[0].handle = gem_create(fd, 4096);
object[0].flags = EXEC_OBJECT_WRITE;
object[1].handle = gem_create(fd, 4096);
gem_write(fd, object[1].handle, 0, &bbe, sizeof(bbe));
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = to_user_pointer(object);
execbuf.buffer_count = 2;
/* Check if we have no-reloc support first */
if (__gem_execbuf(fd, &execbuf)) {
object[0].flags = 0;
object[1].relocs_ptr = to_user_pointer(reloc);
object[1].relocation_count = 1;
/* Add a dummy relocation to mark the object as writing */
memset(reloc, 0, sizeof(reloc));
reloc->offset = 1000;
reloc->target_handle = object[0].handle;
reloc->read_domains = I915_GEM_DOMAIN_RENDER;
reloc->write_domain = I915_GEM_DOMAIN_RENDER;
gem_execbuf(fd, &execbuf);
}
srandom(0xdeadbeef);
for (i = 0; i < SLOW_QUICK(0x100000, 10); i++) {
execbuf.flags = engines[rand() % nengine];
gem_execbuf(fd, &execbuf);
}
gem_sync(fd, object[1].handle);
gem_close(fd, object[1].handle);
gem_close(fd, object[0].handle);
}
igt_simple_main
{
int fd;
fd = drm_open_driver(DRIVER_INTEL);
igt_require_gem(fd);
intel_detect_and_clear_missed_interrupts(fd);
sync_loop(fd);
igt_assert_eq(intel_detect_and_clear_missed_interrupts(fd), 0);
close(fd);
}
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