linux/drivers/gpu/drm/i915/selftests/mock_context.c
Chris Wilson 79f0f4724d drm/i915/selftests: Exercise independence of per-engine resets
If all goes well, resetting one engine should not affect the operation of
any others. So to test this, we setup a continuous stream of requests
onto to each of the "innocent" engines whilst constantly resetting our
target engine.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Michel Thierry <michel.thierry@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170721123238.16428-16-chris@chris-wilson.co.uk
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-07-27 09:38:48 +02:00

106 lines
2.7 KiB
C

/*
* 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 "mock_context.h"
#include "mock_gtt.h"
struct i915_gem_context *
mock_context(struct drm_i915_private *i915,
const char *name)
{
struct i915_gem_context *ctx;
int ret;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return NULL;
kref_init(&ctx->ref);
INIT_LIST_HEAD(&ctx->link);
ctx->i915 = i915;
ctx->vma_lut.ht_bits = VMA_HT_BITS;
ctx->vma_lut.ht_size = BIT(VMA_HT_BITS);
ctx->vma_lut.ht = kcalloc(ctx->vma_lut.ht_size,
sizeof(*ctx->vma_lut.ht),
GFP_KERNEL);
if (!ctx->vma_lut.ht)
goto err_free;
ret = ida_simple_get(&i915->contexts.hw_ida,
0, MAX_CONTEXT_HW_ID, GFP_KERNEL);
if (ret < 0)
goto err_vma_ht;
ctx->hw_id = ret;
if (name) {
ctx->name = kstrdup(name, GFP_KERNEL);
if (!ctx->name)
goto err_put;
ctx->ppgtt = mock_ppgtt(i915, name);
if (!ctx->ppgtt)
goto err_put;
}
return ctx;
err_vma_ht:
kvfree(ctx->vma_lut.ht);
err_free:
kfree(ctx);
return NULL;
err_put:
i915_gem_context_set_closed(ctx);
i915_gem_context_put(ctx);
return NULL;
}
void mock_context_close(struct i915_gem_context *ctx)
{
i915_gem_context_set_closed(ctx);
i915_ppgtt_close(&ctx->ppgtt->base);
i915_gem_context_put(ctx);
}
void mock_init_contexts(struct drm_i915_private *i915)
{
INIT_LIST_HEAD(&i915->contexts.list);
ida_init(&i915->contexts.hw_ida);
INIT_WORK(&i915->contexts.free_work, contexts_free_worker);
init_llist_head(&i915->contexts.free_list);
}
struct i915_gem_context *
live_context(struct drm_i915_private *i915, struct drm_file *file)
{
lockdep_assert_held(&i915->drm.struct_mutex);
return i915_gem_create_context(i915, file->driver_priv);
}