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/*
* Copyright © 2016 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.
*/
#include "igt.h"
#include <sys/poll.h>
IGT_TEST_DESCRIPTION("Basic check of polling for prime fences.");
static bool prime_busy(struct pollfd *pfd, bool excl)
{
pfd->events = excl ? POLLOUT : POLLIN;
return poll(pfd, 1, 0) == 0;
}
#define BEFORE 0x1
#define AFTER 0x2
static void one(int fd, unsigned ring, uint32_t flags, unsigned test_flags)
{
const int gen = intel_gen(intel_get_drm_devid(fd));
struct drm_i915_gem_exec_object2 obj[2];
struct pollfd pfd[2];
#define SCRATCH 0
#define BATCH 1
struct drm_i915_gem_relocation_entry store[1024+1];
struct drm_i915_gem_execbuffer2 execbuf;
unsigned size = ALIGN(ARRAY_SIZE(store)*16 + 4, 4096);
struct timespec tv;
uint32_t *batch, *bbe;
int i, count;
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = (uintptr_t)obj;
execbuf.buffer_count = 2;
execbuf.flags = ring | flags;
if (gen < 6)
execbuf.flags |= I915_EXEC_SECURE;
memset(obj, 0, sizeof(obj));
obj[SCRATCH].handle = gem_create(fd, 4096);
obj[BATCH].handle = gem_create(fd, size);
obj[BATCH].relocs_ptr = (uintptr_t)store;
obj[BATCH].relocation_count = ARRAY_SIZE(store);
memset(store, 0, sizeof(store));
if (test_flags & BEFORE) {
memset(pfd, 0, sizeof(pfd));
pfd[SCRATCH].fd = prime_handle_to_fd(fd, obj[SCRATCH].handle);
pfd[BATCH].fd = prime_handle_to_fd(fd, obj[BATCH].handle);
}
batch = gem_mmap__wc(fd, obj[BATCH].handle, 0, size, PROT_WRITE);
gem_set_domain(fd, obj[BATCH].handle,
I915_GEM_DOMAIN_GTT, I915_GEM_DOMAIN_GTT);
i = 0;
for (count = 0; count < 1024; count++) {
store[count].target_handle = obj[SCRATCH].handle;
store[count].presumed_offset = -1;
store[count].offset = sizeof(uint32_t) * (i + 1);
store[count].delta = sizeof(uint32_t) * count;
store[count].read_domains = I915_GEM_DOMAIN_INSTRUCTION;
store[count].write_domain = I915_GEM_DOMAIN_INSTRUCTION;
batch[i] = MI_STORE_DWORD_IMM | (gen < 6 ? 1 << 22 : 0);
if (gen >= 8) {
batch[++i] = 0;
batch[++i] = 0;
} else if (gen >= 4) {
batch[++i] = 0;
batch[++i] = 0;
store[count].offset += sizeof(uint32_t);
} else {
batch[i]--;
batch[++i] = 0;
}
batch[++i] = count;
i++;
}
bbe = &batch[i];
store[count].target_handle = obj[BATCH].handle; /* recurse */
store[count].presumed_offset = 0;
store[count].offset = sizeof(uint32_t) * (i + 1);
store[count].delta = 0;
store[count].read_domains = I915_GEM_DOMAIN_COMMAND;
store[count].write_domain = 0;
batch[i] = MI_BATCH_BUFFER_START;
if (gen >= 8) {
batch[i] |= 1 << 8 | 1;
batch[++i] = 0;
batch[++i] = 0;
} else if (gen >= 6) {
batch[i] |= 1 << 8;
batch[++i] = 0;
} else {
batch[i] |= 2 << 6;
batch[++i] = 0;
if (gen < 4) {
batch[i] |= 1;
store[count].delta = 1;
}
}
i++;
igt_assert(i < size/sizeof(*batch));
igt_require(__gem_execbuf(fd, &execbuf) == 0);
if (test_flags & AFTER) {
memset(pfd, 0, sizeof(pfd));
pfd[SCRATCH].fd = prime_handle_to_fd(fd, obj[SCRATCH].handle);
pfd[BATCH].fd = prime_handle_to_fd(fd, obj[BATCH].handle);
}
igt_assert(prime_busy(&pfd[SCRATCH], false));
igt_assert(prime_busy(&pfd[SCRATCH], true));
igt_assert(!prime_busy(&pfd[BATCH], false));
igt_assert(prime_busy(&pfd[BATCH], true));
*bbe = MI_BATCH_BUFFER_END;
__sync_synchronize();
/* Calling busy in a loop should be enough to flush the rendering */
memset(&tv, 0, sizeof(tv));
while (prime_busy(&pfd[BATCH], true))
igt_assert(igt_seconds_elapsed(&tv) < 10);
igt_assert(!prime_busy(&pfd[SCRATCH], true));
munmap(batch, size);
batch = gem_mmap__wc(fd, obj[SCRATCH].handle, 0, 4096, PROT_READ);
for (i = 0; i < 1024; i++)
igt_assert_eq_u32(batch[i], i);
munmap(batch, 4096);
gem_close(fd, obj[BATCH].handle);
gem_close(fd, obj[SCRATCH].handle);
close(pfd[BATCH].fd);
close(pfd[SCRATCH].fd);
}
igt_main
{
const struct intel_execution_engine *e;
int fd = -1;
igt_skip_on_simulation();
igt_fixture
fd = drm_open_driver_master(DRIVER_INTEL);
igt_subtest_group {
const struct mode {
const char *name;
unsigned int flags;
} modes[] = {
{ "before", BEFORE },
{ "after", AFTER },
{ NULL },
};
int gen = 0;
igt_fixture {
gem_require_mmap_wc(fd);
gen = intel_gen(intel_get_drm_devid(fd));
}
for (e = intel_execution_engines; e->name; e++) {
for (const struct mode *m = modes; m->name; m++) {
igt_subtest_f("%s-%s", m->name, e->name) {
gem_require_ring(fd, e->exec_id | e->flags);
igt_skip_on_f(gen == 6 &&
e->exec_id == I915_EXEC_BSD,
"MI_STORE_DATA broken on gen6 bsd\n");
gem_quiescent_gpu(fd);
one(fd, e->exec_id, e->flags, m->flags);
}
}
}
}
igt_fixture
close(fd);
}
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