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igt/gem_concurrent_blit: Exercise concurrent reads

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Since we are considering implementing read-read optimisations for mixed
engine workloads, make sure that we at least have a few tests that check
for coherency when doing so.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2015-03-16 11:55:46 +00:00
parent 99b5ee8aaa
commit 35b0ac99fc
1 changed files with 65 additions and 1 deletions
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66
tests/gem_concurrent_blit.c
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@ -372,7 +372,8 @@ igt_render_copyfunc_t rendercopy;
struct buffers {
const struct access_mode *mode;
drm_intel_bufmgr *bufmgr;
drm_intel_bo *src[MAX_NUM_BUFFERS], *dst[MAX_NUM_BUFFERS], *dummy;
drm_intel_bo *src[MAX_NUM_BUFFERS], *dst[MAX_NUM_BUFFERS];
drm_intel_bo *dummy, *spare;
int count;
};
@ -400,6 +401,7 @@ static void buffers_destroy(struct buffers *data)
data->mode->release_bo(data->dst[i]);
}
data->mode->release_bo(data->dummy);
data->mode->release_bo(data->spare);
data->count = 0;
}
@ -417,6 +419,7 @@ static void buffers_create(struct buffers *data,
data->mode->create_bo(data->bufmgr, width, height);
}
data->dummy = data->mode->create_bo(data->bufmgr, width, height);
data->spare = data->mode->create_bo(data->bufmgr, width, height);
data->count = count;
}
@ -621,6 +624,48 @@ static void do_early_read(struct buffers *buffers,
igt_post_hang_ring(fd, hang);
}
static void do_read_read_bcs(struct buffers *buffers,
do_copy do_copy_func,
do_hang do_hang_func)
{
struct igt_hang_ring hang;
int i;
gem_quiescent_gpu(fd);
for (i = buffers->count; i--; )
buffers->mode->set_bo(buffers->src[i], 0xdeadbeef ^ i, width, height);
for (i = 0; i < buffers->count; i++) {
do_copy_func(buffers->dst[i], buffers->src[i]);
blt_copy_bo(buffers->spare, buffers->src[i]);
}
cpu_cmp_bo(buffers->spare, 0xdeadbeef^(buffers->count-1), width, height, NULL);
hang = do_hang_func();
for (i = buffers->count; i--; )
buffers->mode->cmp_bo(buffers->dst[i], 0xdeadbeef ^ i, width, height, buffers->dummy);
igt_post_hang_ring(fd, hang);
}
static void do_read_read_rcs(struct buffers *buffers,
do_copy do_copy_func,
do_hang do_hang_func)
{
struct igt_hang_ring hang;
int i;
gem_quiescent_gpu(fd);
for (i = buffers->count; i--; )
buffers->mode->set_bo(buffers->src[i], 0xdeadbeef ^ i, width, height);
for (i = 0; i < buffers->count; i++) {
do_copy_func(buffers->dst[i], buffers->src[i]);
render_copy_bo(buffers->spare, buffers->src[i]);
}
cpu_cmp_bo(buffers->spare, 0xdeadbeef^(buffers->count-1), width, height, NULL);
hang = do_hang_func();
for (i = buffers->count; i--; )
buffers->mode->cmp_bo(buffers->dst[i], 0xdeadbeef ^ i, width, height, buffers->dummy);
igt_post_hang_ring(fd, hang);
}
static void do_gpu_read_after_write(struct buffers *buffers,
do_copy do_copy_func,
do_hang do_hang_func)
@ -817,6 +862,25 @@ run_basic_modes(const struct access_mode *mode,
p->copy, h->hang);
}
/* concurrent reads */
igt_subtest_f("%s-%s-read-read-bcs%s%s", mode->name, p->prefix, suffix, h->suffix) {
h->require();
p->require();
buffers_create(&buffers, num_buffers);
run_wrap_func(&buffers,
do_read_read_bcs,
p->copy, h->hang);
}
igt_subtest_f("%s-%s-read-read-rcs%s%s", mode->name, p->prefix, suffix, h->suffix) {
h->require();
p->require();
igt_require(rendercopy);
buffers_create(&buffers, num_buffers);
run_wrap_func(&buffers,
do_read_read_rcs,
p->copy, h->hang);
}
/* and finally try to trick the kernel into loosing the pending write */
igt_subtest_f("%s-%s-gpu-read-after-write%s%s", mode->name, p->prefix, suffix, h->suffix) {
h->require();