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igt/gem_userptr_blits: Exercise applying relocations to a userptr bo

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-01-22 18:02:50 +00:00
parent 5b675f7b2f
commit 0091e6787c
1 changed files with 42 additions and 0 deletions
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42
tests/gem_userptr_blits.c
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@ -677,6 +677,45 @@ static int test_forbidden_ops(int fd)
return 0;
}
static void test_relocations(int fd)
{
struct drm_i915_gem_relocation_entry *reloc;
struct drm_i915_gem_exec_object2 obj;
struct drm_i915_gem_execbuffer2 exec;
unsigned size;
void *ptr;
int i;
size = PAGE_SIZE + ALIGN(sizeof(*reloc)*256, PAGE_SIZE);
memset(&obj, 0, sizeof(obj));
igt_assert(posix_memalign(&ptr, PAGE_SIZE, size) == 0);
igt_assert_eq(gem_userptr(fd, ptr, size, 0, &obj.handle), 0);
if (!gem_has_llc(fd))
gem_set_caching(fd, obj.handle, 0);
*(uint32_t *)ptr = MI_BATCH_BUFFER_END;
reloc = (typeof(reloc))((char *)ptr + PAGE_SIZE);
obj.relocs_ptr = (uintptr_t)reloc;
obj.relocation_count = 256;
memset(reloc, 0, 256*sizeof(*reloc));
for (i = 0; i < 256; i++) {
reloc[i].offset = 2048 - 4*i;
reloc[i].target_handle = obj.handle;
reloc[i].read_domains = I915_GEM_DOMAIN_INSTRUCTION;
}
memset(&exec, 0, sizeof(exec));
exec.buffers_ptr = (uintptr_t)&obj;
exec.buffer_count = 1;
gem_execbuf(fd, &exec);
gem_sync(fd, obj.handle);
gem_close(fd, obj.handle);
free(ptr);
}
static unsigned char counter;
static void (* volatile orig_sigbus)(int sig, siginfo_t *info, void *param);
@ -1363,6 +1402,9 @@ int main(int argc, char **argv)
igt_subtest("forbidden-operations")
test_forbidden_ops(fd);
igt_subtest("relocations")
test_relocations(fd);
igt_info("Testing unsynchronized mappings...\n");
gem_userptr_test_unsynchronized();