Commit 1c42819a authored by Chris Wilson's avatar Chris Wilson

drm/i915: Add initial selftests for i915_gem_gtt

Simple starting point for adding selftests for i915_gem_gtt, first
try creating a ppGTT and filling it.
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarMatthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-27-chris@chris-wilson.co.uk
parent ced01afd
...@@ -3760,4 +3760,5 @@ int i915_gem_gtt_insert(struct i915_address_space *vm, ...@@ -3760,4 +3760,5 @@ int i915_gem_gtt_insert(struct i915_address_space *vm,
#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftests/mock_gtt.c" #include "selftests/mock_gtt.c"
#include "selftests/i915_gem_gtt.c"
#endif #endif
/*
* 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 "../i915_selftest.h"
static int igt_ppgtt_alloc(void *arg)
{
struct drm_i915_private *dev_priv = arg;
struct i915_hw_ppgtt *ppgtt;
u64 size, last;
int err;
/* Allocate a ppggt and try to fill the entire range */
if (!USES_PPGTT(dev_priv))
return 0;
ppgtt = kzalloc(sizeof(*ppgtt), GFP_KERNEL);
if (!ppgtt)
return -ENOMEM;
mutex_lock(&dev_priv->drm.struct_mutex);
err = __hw_ppgtt_init(ppgtt, dev_priv);
if (err)
goto err_ppgtt;
if (!ppgtt->base.allocate_va_range)
goto err_ppgtt_cleanup;
/* Check we can allocate the entire range */
for (size = 4096;
size <= ppgtt->base.total;
size <<= 2) {
err = ppgtt->base.allocate_va_range(&ppgtt->base, 0, size);
if (err) {
if (err == -ENOMEM) {
pr_info("[1] Ran out of memory for va_range [0 + %llx] [bit %d]\n",
size, ilog2(size));
err = 0; /* virtual space too large! */
}
goto err_ppgtt_cleanup;
}
ppgtt->base.clear_range(&ppgtt->base, 0, size);
}
/* Check we can incrementally allocate the entire range */
for (last = 0, size = 4096;
size <= ppgtt->base.total;
last = size, size <<= 2) {
err = ppgtt->base.allocate_va_range(&ppgtt->base,
last, size - last);
if (err) {
if (err == -ENOMEM) {
pr_info("[2] Ran out of memory for va_range [%llx + %llx] [bit %d]\n",
last, size - last, ilog2(size));
err = 0; /* virtual space too large! */
}
goto err_ppgtt_cleanup;
}
}
err_ppgtt_cleanup:
ppgtt->base.cleanup(&ppgtt->base);
err_ppgtt:
mutex_unlock(&dev_priv->drm.struct_mutex);
kfree(ppgtt);
return err;
}
int i915_gem_gtt_live_selftests(struct drm_i915_private *i915)
{
static const struct i915_subtest tests[] = {
SUBTEST(igt_ppgtt_alloc),
};
return i915_subtests(tests, i915);
}
...@@ -14,3 +14,4 @@ selftest(requests, i915_gem_request_live_selftests) ...@@ -14,3 +14,4 @@ selftest(requests, i915_gem_request_live_selftests)
selftest(objects, i915_gem_object_live_selftests) selftest(objects, i915_gem_object_live_selftests)
selftest(dmabuf, i915_gem_dmabuf_live_selftests) selftest(dmabuf, i915_gem_dmabuf_live_selftests)
selftest(coherency, i915_gem_coherency_live_selftests) selftest(coherency, i915_gem_coherency_live_selftests)
selftest(gtt, i915_gem_gtt_live_selftests)
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