Release 4.18 drivers/gpu/drm/i915/selftests/mock_engine.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_engine.h"
#include "mock_request.h"
struct mock_ring {
struct intel_ring base;
struct i915_timeline timeline;
};
static struct mock_request *first_request(struct mock_engine *engine)
{
return list_first_entry_or_null(&engine->hw_queue,
struct mock_request,
link);
}
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static void advance(struct mock_engine *engine,
struct mock_request *request)
{
list_del_init(&request->link);
mock_seqno_advance(&engine->base, request->base.global_seqno);
}
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| Chris Wilson | 38 | 100.00% | 1 | 100.00% |
| Total | 38 | 100.00% | 1 | 100.00% |
static void hw_delay_complete(struct timer_list *t)
{
struct mock_engine *engine = from_timer(engine, t, hw_delay);
struct mock_request *request;
spin_lock(&engine->hw_lock);
/* Timer fired, first request is complete */
request = first_request(engine);
if (request)
advance(engine, request);
/*
* Also immediately signal any subsequent 0-delay requests, but
* requeue the timer for the next delayed request.
*/
while ((request = first_request(engine))) {
if (request->delay) {
mod_timer(&engine->hw_delay, jiffies + request->delay);
break;
}
advance(engine, request);
}
spin_unlock(&engine->hw_lock);
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Chris Wilson | 100 | 91.74% | 2 | 66.67% |
| Kees Cook | 9 | 8.26% | 1 | 33.33% |
| Total | 109 | 100.00% | 3 | 100.00% |
static struct intel_ring *
mock_context_pin(struct intel_engine_cs *engine,
struct i915_gem_context *ctx)
{
struct intel_context *ce = to_intel_context(ctx, engine);
if (!ce->pin_count++)
i915_gem_context_get(ctx);
return engine->buffer;
}
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| Chris Wilson | 48 | 100.00% | 3 | 100.00% |
| Total | 48 | 100.00% | 3 | 100.00% |
static void mock_context_unpin(struct intel_engine_cs *engine,
struct i915_gem_context *ctx)
{
struct intel_context *ce = to_intel_context(ctx, engine);
if (!--ce->pin_count)
i915_gem_context_put(ctx);
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Chris Wilson | 41 | 100.00% | 2 | 100.00% |
| Total | 41 | 100.00% | 2 | 100.00% |
static int mock_request_alloc(struct i915_request *request)
{
struct mock_request *mock = container_of(request, typeof(*mock), base);
INIT_LIST_HEAD(&mock->link);
mock->delay = 0;
return 0;
}
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| Chris Wilson | 46 | 100.00% | 2 | 100.00% |
| Total | 46 | 100.00% | 2 | 100.00% |
static int mock_emit_flush(struct i915_request *request,
unsigned int flags)
{
return 0;
}
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| Chris Wilson | 18 | 100.00% | 2 | 100.00% |
| Total | 18 | 100.00% | 2 | 100.00% |
static void mock_emit_breadcrumb(struct i915_request *request,
u32 *flags)
{
}
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| Chris Wilson | 14 | 100.00% | 2 | 100.00% |
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static void mock_submit_request(struct i915_request *request)
{
struct mock_request *mock = container_of(request, typeof(*mock), base);
struct mock_engine *engine =
container_of(request->engine, typeof(*engine), base);
i915_request_submit(request);
GEM_BUG_ON(!request->global_seqno);
spin_lock_irq(&engine->hw_lock);
list_add_tail(&mock->link, &engine->hw_queue);
if (mock->link.prev == &engine->hw_queue) {
if (mock->delay)
mod_timer(&engine->hw_delay, jiffies + mock->delay);
else
advance(engine, mock);
}
spin_unlock_irq(&engine->hw_lock);
}
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| Chris Wilson | 134 | 100.00% | 3 | 100.00% |
| Total | 134 | 100.00% | 3 | 100.00% |
static struct intel_ring *mock_ring(struct intel_engine_cs *engine)
{
const unsigned long sz = PAGE_SIZE / 2;
struct mock_ring *ring;
BUILD_BUG_ON(MIN_SPACE_FOR_ADD_REQUEST > sz);
ring = kzalloc(sizeof(*ring) + sz, GFP_KERNEL);
if (!ring)
return NULL;
i915_timeline_init(engine->i915, &ring->timeline, engine->name);
ring->base.size = sz;
ring->base.effective_size = sz;
ring->base.vaddr = (void *)(ring + 1);
ring->base.timeline = &ring->timeline;
INIT_LIST_HEAD(&ring->base.request_list);
intel_ring_update_space(&ring->base);
return &ring->base;
}
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| Chris Wilson | 140 | 100.00% | 4 | 100.00% |
| Total | 140 | 100.00% | 4 | 100.00% |
static void mock_ring_free(struct intel_ring *base)
{
struct mock_ring *ring = container_of(base, typeof(*ring), base);
i915_timeline_fini(&ring->timeline);
kfree(ring);
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Chris Wilson | 42 | 100.00% | 2 | 100.00% |
| Total | 42 | 100.00% | 2 | 100.00% |
struct intel_engine_cs *mock_engine(struct drm_i915_private *i915,
const char *name,
int id)
{
struct mock_engine *engine;
GEM_BUG_ON(id >= I915_NUM_ENGINES);
engine = kzalloc(sizeof(*engine) + PAGE_SIZE, GFP_KERNEL);
if (!engine)
return NULL;
/* minimal engine setup for requests */
engine->base.i915 = i915;
snprintf(engine->base.name, sizeof(engine->base.name), "%s", name);
engine->base.id = id;
engine->base.status_page.page_addr = (void *)(engine + 1);
engine->base.context_pin = mock_context_pin;
engine->base.context_unpin = mock_context_unpin;
engine->base.request_alloc = mock_request_alloc;
engine->base.emit_flush = mock_emit_flush;
engine->base.emit_breadcrumb = mock_emit_breadcrumb;
engine->base.submit_request = mock_submit_request;
i915_timeline_init(i915, &engine->base.timeline, engine->base.name);
intel_engine_init_breadcrumbs(&engine->base);
engine->base.breadcrumbs.mock = true; /* prevent touching HW for irqs */
/* fake hw queue */
spin_lock_init(&engine->hw_lock);
timer_setup(&engine->hw_delay, hw_delay_complete, 0);
INIT_LIST_HEAD(&engine->hw_queue);
engine->base.buffer = mock_ring(&engine->base);
if (!engine->base.buffer)
goto err_breadcrumbs;
return &engine->base;
err_breadcrumbs:
intel_engine_fini_breadcrumbs(&engine->base);
i915_timeline_fini(&engine->base.timeline);
kfree(engine);
return NULL;
}
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| Person | Tokens | Prop | Commits | CommitProp |
| Chris Wilson | 269 | 94.06% | 6 | 75.00% |
| Oscar Mateo | 15 | 5.24% | 1 | 12.50% |
| Kees Cook | 2 | 0.70% | 1 | 12.50% |
| Total | 286 | 100.00% | 8 | 100.00% |
void mock_engine_flush(struct intel_engine_cs *engine)
{
struct mock_engine *mock =
container_of(engine, typeof(*mock), base);
struct mock_request *request, *rn;
del_timer_sync(&mock->hw_delay);
spin_lock_irq(&mock->hw_lock);
list_for_each_entry_safe(request, rn, &mock->hw_queue, link) {
list_del_init(&request->link);
mock_seqno_advance(&mock->base, request->base.global_seqno);
}
spin_unlock_irq(&mock->hw_lock);
}
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| Chris Wilson | 94 | 100.00% | 2 | 100.00% |
| Total | 94 | 100.00% | 2 | 100.00% |
void mock_engine_reset(struct intel_engine_cs *engine)
{
intel_write_status_page(engine, I915_GEM_HWS_INDEX, 0);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Chris Wilson | 19 | 100.00% | 1 | 100.00% |
| Total | 19 | 100.00% | 1 | 100.00% |
void mock_engine_free(struct intel_engine_cs *engine)
{
struct mock_engine *mock =
container_of(engine, typeof(*mock), base);
GEM_BUG_ON(timer_pending(&mock->hw_delay));
if (engine->last_retired_context)
intel_context_unpin(engine->last_retired_context, engine);
mock_ring_free(engine->buffer);
intel_engine_fini_breadcrumbs(engine);
i915_timeline_fini(&engine->timeline);
kfree(engine);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Chris Wilson | 79 | 100.00% | 4 | 100.00% |
| Total | 79 | 100.00% | 4 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Chris Wilson | 1129 | 97.75% | 11 | 84.62% |
| Oscar Mateo | 15 | 1.30% | 1 | 7.69% |
| Kees Cook | 11 | 0.95% | 1 | 7.69% |
| Total | 1155 | 100.00% | 13 | 100.00% |
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