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igt/gem_exec_suspend: Add BAT runs

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Add a couple of all-engine busy tests in order to exercise coherency and
general bugs across suspend. (In particular, I expect this to trigger a
fresh case of lockdeps on Braswell, as well as the usual battery of
missing rpm references. This is an exerciser for my lockless-suspend
patches.)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-03-21 12:18:11 +00:00
parent a03ee8f6c8
commit a43f40741b
1 changed files with 73 additions and 9 deletions
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80
tests/gem_exec_suspend.c
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@ -35,6 +35,11 @@
#define HIBERNATE 2
#define mode(x) ((x) & 0xff)
#define LOCAL_I915_EXEC_BSD_SHIFT (13)
#define LOCAL_I915_EXEC_BSD_MASK (3 << LOCAL_I915_EXEC_BSD_SHIFT)
#define ENGINE_MASK (I915_EXEC_RING_MASK | LOCAL_I915_EXEC_BSD_MASK)
#define UNCACHED (0<<8)
#define CACHED (1<<8)
@ -53,30 +58,82 @@ static void check_bo(int fd, uint32_t handle)
munmap(map, 4096);
}
static bool can_mi_store_dword(int gen, unsigned engine)
{
return !(gen == 6 && (engine & ~(3<<13)) == I915_EXEC_BSD);
}
static bool ignore_engine(int gen, unsigned engine)
{
if (engine == 0)
return true;
if (!can_mi_store_dword(gen, engine))
return true;
return false;
}
static void test_all(int fd, unsigned flags)
{
const int gen = intel_gen(intel_get_drm_devid(fd));
unsigned engine;
for_each_engine(fd, engine) {
if (gen == 6 && (engine & ~(3<<13)) == I915_EXEC_BSD)
continue;
if (!ignore_engine(gen, engine))
run_test(fd, engine, flags & ~0xff);
}
}
static void run_test(int fd, unsigned ring, unsigned flags)
static bool has_semaphores(int fd)
{
struct drm_i915_getparam gp;
int val = -1;
memset(&gp, 0, sizeof(gp));
gp.param = I915_PARAM_HAS_SEMAPHORES;
gp.value = &val;
drmIoctl(fd, DRM_IOCTL_I915_GETPARAM, &gp);
errno = 0;
return val > 0;
}
static void run_test(int fd, unsigned engine, unsigned flags)
{
const int gen = intel_gen(intel_get_drm_devid(fd));
const uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_exec_object2 obj[2];
struct drm_i915_gem_relocation_entry reloc;
struct drm_i915_gem_execbuffer2 execbuf;
unsigned engines[16];
unsigned nengine;
gem_require_ring(fd, ring);
igt_skip_on_f(gen == 6 && (ring & ~(3<<13)) == I915_EXEC_BSD,
"MI_STORE_DATA broken on gen6 bsd\n");
nengine = 0;
if (engine == -1) {
/* If we don't have semaphores, then every ring switch
* will result in a CPU stall until the previous write
* has finished. This is likely to hide any issue with
* the GPU being active across the suspend (because the
* GPU is then unlikely to be active!)
*/
if (has_semaphores(fd)) {
for_each_engine(fd, engine) {
if (!ignore_engine(gen, engine))
engines[nengine++] = engine;
}
} else {
igt_require(gem_has_ring(fd, 0));
igt_require(can_mi_store_dword(gen, 0));
engines[nengine++] = 0;
}
} else {
igt_require(gem_has_ring(fd, engine));
igt_require(can_mi_store_dword(gen, engine));
engines[nengine++] = engine;
}
igt_require(nengine);
/* Before suspending, check normal operation */
if (mode(flags) != NOSLEEP)
@ -87,7 +144,7 @@ static void run_test(int fd, unsigned ring, unsigned flags)
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = (uintptr_t)obj;
execbuf.buffer_count = 2;
execbuf.flags = ring | (1 << 11);
execbuf.flags = 1 << 11;
if (gen < 6)
execbuf.flags |= I915_EXEC_SECURE;
@ -138,6 +195,8 @@ static void run_test(int fd, unsigned ring, unsigned flags)
buf[++b] = MI_BATCH_BUFFER_END;
gem_write(fd, obj[1].handle,
4096-sizeof(buf), buf, sizeof(buf));
execbuf.flags &= ~ENGINE_MASK;
execbuf.flags |= engines[rand() % nengine];
gem_execbuf(fd, &execbuf);
gem_close(fd, obj[1].handle);
}
@ -182,6 +241,11 @@ igt_main
igt_fixture
fd = drm_open_driver_master(DRIVER_INTEL);
igt_subtest("basic-S3")
run_test(fd, -1, SUSPEND);
igt_subtest("basic-S4")
run_test(fd, -1, HIBERNATE);
for (e = intel_execution_engines; e->name; e++) {
for (m = modes; m->suffix; m++) {
igt_subtest_f("%s-uncached%s", e->name, m->suffix)