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lib: Query the kernel for support of a particular exec id

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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2016-01-27 14:30:24 +00:00
parent e3b68bb666
commit b7f150b606
1 changed files with 22 additions and 20 deletions
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42
lib/ioctl_wrappers.c
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@ -1308,6 +1308,27 @@ void gem_require_caching(int fd)
errno = 0;
}
static int gem_has_ring(int fd, int ring)
{
uint32_t bbe = MI_BATCH_BUFFER_END;
struct drm_i915_gem_execbuffer2 execbuf;
struct drm_i915_gem_exec_object2 exec;
int ret;
memset(&exec, 0, sizeof(exec));
exec.handle = gem_create(fd, 4096);
gem_write(fd, exec.handle, 0, &bbe, sizeof(bbe));
memset(&execbuf, 0, sizeof(execbuf));
execbuf.buffers_ptr = (uintptr_t)&exec;
execbuf.buffer_count = 1;
execbuf.flags = ring;
ret = __gem_execbuf(fd, &execbuf);
gem_close(fd, exec.handle);
return ret == 0;
}
/**
* gem_require_ring:
* @fd: open i915 drm file descriptor
@ -1319,26 +1340,7 @@ void gem_require_caching(int fd)
*/
void gem_require_ring(int fd, int ring_id)
{
switch (ring_id) {
case I915_EXEC_DEFAULT:
case I915_EXEC_RENDER:
return;
case I915_EXEC_BLT:
igt_require(gem_has_blt(fd));
return;
case I915_EXEC_BSD:
igt_require(gem_has_bsd(fd));
return;
#ifdef I915_EXEC_VEBOX
case I915_EXEC_VEBOX:
igt_require(gem_has_vebox(fd));
return;
#endif
default:
igt_warn("Invalid ring: %d\n", ring_id);
igt_assert(0);
return;
}
igt_require(gem_has_ring(fd, ring_id));
}
/* prime */