Our timelines are more than just a seqno. They also provide an ordered
list of requests to be executed. Due to the restriction of handling
individual address spaces, we are limited to a timeline per address
space but we use a fence context per engine within.
Our first step to introducing independent timelines per context (i.e. to
allow each context to have a queue of requests to execute that have a
defined set of dependencies on other requests) is to provide a timeline
abstraction for the global execution queue.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahti...@linux.intel.com>
---
drivers/gpu/drm/i915/Makefile | 1 +
drivers/gpu/drm/i915/i915_debugfs.c | 19 +++----
drivers/gpu/drm/i915/i915_drv.c | 6 ++-
drivers/gpu/drm/i915/i915_drv.h | 9 ++--
drivers/gpu/drm/i915/i915_gem.c | 80 ++++++++++++++++++++++--------
drivers/gpu/drm/i915/i915_gem.h | 2 +
drivers/gpu/drm/i915/i915_gem_request.c | 74 ++++++++++++++++-----------
drivers/gpu/drm/i915/i915_gem_request.h | 1 +
drivers/gpu/drm/i915/i915_gem_timeline.c | 64 ++++++++++++++++++++++++
drivers/gpu/drm/i915/i915_gem_timeline.h | 69 ++++++++++++++++++++++++++
drivers/gpu/drm/i915/i915_gpu_error.c | 6 +--
drivers/gpu/drm/i915/i915_guc_submission.c | 3 +-
drivers/gpu/drm/i915/i915_irq.c | 2 +-
drivers/gpu/drm/i915/intel_engine_cs.c | 13 ++---
drivers/gpu/drm/i915/intel_ringbuffer.h | 35 ++-----------
15 files changed, 271 insertions(+), 113 deletions(-)
create mode 100644 drivers/gpu/drm/i915/i915_gem_timeline.c
create mode 100644 drivers/gpu/drm/i915/i915_gem_timeline.h
diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index b94a90f34d2d..bf07b9de078d 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -42,6 +42,7 @@ i915-y += i915_cmd_parser.o \
i915_gem_shrinker.o \
i915_gem_stolen.o \
i915_gem_tiling.o \
+ i915_gem_timeline.o \
i915_gem_userptr.o \
i915_gpu_error.o \
i915_trace_points.o \
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index 8614bf4e479a..ef1672b3a4bc 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -579,7 +579,7 @@ static int i915_gem_pageflip_info(struct seq_file *m, void
*data)
seq_printf(m, "Flip queued on %s at seqno %x,
next seqno %x [current breadcrumb %x], completed? %d\n",
engine->name,
i915_gem_request_get_seqno(work->flip_queued_req),
- dev_priv->next_seqno,
+
dev_priv->gt.global_timeline.next_seqno,
intel_engine_get_seqno(engine),
i915_gem_request_completed(work->flip_queued_req));
} else
@@ -670,13 +670,13 @@ static int i915_gem_request_info(struct seq_file *m, void
*data)
int count;
count = 0;
- list_for_each_entry(req, &engine->request_list, link)
+ list_for_each_entry(req, &engine->timeline->requests, link)
count++;
if (count == 0)
continue;
seq_printf(m, "%s requests: %d\n", engine->name, count);
- list_for_each_entry(req, &engine->request_list, link) {
+ list_for_each_entry(req, &engine->timeline->requests, link) {
struct pid *pid = req->ctx->pid;
struct task_struct *task;
@@ -1054,15 +1054,8 @@ static int
i915_next_seqno_get(void *data, u64 *val)
{
struct drm_i915_private *dev_priv = data;
- int ret;
-
- ret = mutex_lock_interruptible(&dev_priv->drm.struct_mutex);
- if (ret)
- return ret;
-
- *val = dev_priv->next_seqno;
- mutex_unlock(&dev_priv->drm.struct_mutex);
+ *val = READ_ONCE(dev_priv->gt.global_timeline.next_seqno);
return 0;
}
@@ -1077,7 +1070,7 @@ i915_next_seqno_set(void *data, u64 val)
if (ret)
return ret;
- ret = i915_gem_set_seqno(dev, val);
+ ret = i915_gem_set_global_seqno(dev, val);
mutex_unlock(&dev->struct_mutex);
return ret;
@@ -1336,7 +1329,7 @@ static int i915_hangcheck_info(struct seq_file *m, void
*unused)
seq_printf(m, "\tseqno = %x [current %x, last %x]\n",
engine->hangcheck.seqno,
seqno[id],
- engine->last_submitted_seqno);
+ engine->timeline->last_submitted_seqno);
seq_printf(m, "\twaiters? %s, fake irq active? %s\n",
yesno(intel_engine_has_waiter(engine)),
yesno(test_bit(engine->id,
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 4222e3f11eea..b393347554bd 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -835,7 +835,9 @@ static int i915_driver_init_early(struct drm_i915_private
*dev_priv,
intel_init_display_hooks(dev_priv);
intel_init_clock_gating_hooks(dev_priv);
intel_init_audio_hooks(dev_priv);
- i915_gem_load_init(&dev_priv->drm);
+ ret = i915_gem_load_init(&dev_priv->drm);
+ if (ret < 0)
+ goto err_gvt;
intel_display_crc_init(dev_priv);
@@ -851,6 +853,8 @@ static int i915_driver_init_early(struct drm_i915_private
*dev_priv,
return 0;
+err_gvt:
+ intel_gvt_cleanup(dev_priv);
err_workqueues:
i915_workqueues_cleanup(dev_priv);
return ret;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index d984226fa06a..06b429f81ffd 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -63,6 +63,7 @@
#include "i915_gem_gtt.h"
#include "i915_gem_render_state.h"
#include "i915_gem_request.h"
+#include "i915_gem_timeline.h"
#include "intel_gvt.h"
@@ -1799,7 +1800,6 @@ struct drm_i915_private {
struct i915_gem_context *kernel_context;
struct intel_engine_cs engine[I915_NUM_ENGINES];
struct i915_vma *semaphore;
- u32 next_seqno;
struct drm_dma_handle *status_page_dmah;
struct resource mch_res;
@@ -2057,6 +2057,9 @@ struct drm_i915_private {
void (*resume)(struct drm_i915_private *);
void (*cleanup_engine)(struct intel_engine_cs *engine);
+ struct list_head timelines;
+ struct i915_gem_timeline global_timeline;
+
/**
* Is the GPU currently considered idle, or busy executing
* userspace requests? Whilst idle, we allow runtime power
@@ -3128,7 +3131,7 @@ int i915_gem_get_aperture_ioctl(struct drm_device *dev,
void *data,
struct drm_file *file_priv);
int i915_gem_wait_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
-void i915_gem_load_init(struct drm_device *dev);
+int i915_gem_load_init(struct drm_device *dev);
void i915_gem_load_cleanup(struct drm_device *dev);
void i915_gem_load_init_fences(struct drm_i915_private *dev_priv);
int i915_gem_freeze_late(struct drm_i915_private *dev_priv);
@@ -3293,7 +3296,7 @@ void i915_gem_track_fb(struct drm_i915_gem_object *old,
struct drm_i915_gem_object *new,
unsigned frontbuffer_bits);
-int __must_check i915_gem_set_seqno(struct drm_device *dev, u32 seqno);
+int __must_check i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno);
struct drm_i915_gem_request *
i915_gem_find_active_request(struct intel_engine_cs *engine);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 4866aa46d83d..768190594c4f 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -371,7 +371,7 @@ out:
if (flags & I915_WAIT_LOCKED && i915_gem_request_completed(rq))
i915_gem_request_retire_upto(rq);
- if (rps && rq->fence.seqno == rq->engine->last_submitted_seqno) {
+ if (rps && rq->fence.seqno == rq->timeline->last_submitted_seqno) {
/* The GPU is now idle and this client has stalled.
* Since no other client has submitted a request in the
* meantime, assume that this client is the only one
@@ -2524,7 +2524,7 @@ i915_gem_find_active_request(struct intel_engine_cs
*engine)
* extra delay for a recent interrupt is pointless. Hence, we do
* not need an engine->irq_seqno_barrier() before the seqno reads.
*/
- list_for_each_entry(request, &engine->request_list, link) {
+ list_for_each_entry(request, &engine->timeline->requests, link) {
if (i915_gem_request_completed(request))
continue;
@@ -2592,7 +2592,7 @@ static void i915_gem_reset_engine(struct intel_engine_cs
*engine)
if (i915_gem_context_is_default(incomplete_ctx))
return;
- list_for_each_entry_continue(request, &engine->request_list, link)
+ list_for_each_entry_continue(request, &engine->timeline->requests, link)
if (request->ctx == incomplete_ctx)
reset_request(request);
}
@@ -2623,7 +2623,8 @@ static void i915_gem_cleanup_engine(struct
intel_engine_cs *engine)
* (lockless) lookup doesn't try and wait upon the request as we
* reset it.
*/
- intel_engine_init_seqno(engine, engine->last_submitted_seqno);
+ intel_engine_init_global_seqno(engine,
+ engine->timeline->last_submitted_seqno);
/*
* Clear the execlists queue up before freeing the requests, as those
@@ -2929,17 +2930,26 @@ destroy:
return 0;
}
-int i915_gem_wait_for_idle(struct drm_i915_private *dev_priv,
- unsigned int flags)
+static int wait_for_timeline(struct i915_gem_timeline *tl, unsigned int flags)
{
- struct intel_engine_cs *engine;
- int ret;
+ int ret, i;
- for_each_engine(engine, dev_priv) {
- if (engine->last_context == NULL)
- continue;
+ for (i = 0; i < ARRAY_SIZE(tl->engine); i++) {
+ ret = i915_gem_active_wait(&tl->engine[i].last_request, flags);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
- ret = intel_engine_idle(engine, flags);
+int i915_gem_wait_for_idle(struct drm_i915_private *i915, unsigned int flags)
+{
+ struct i915_gem_timeline *tl;
+ int ret;
+
+ list_for_each_entry(tl, &i915->gt.timelines, link) {
+ ret = wait_for_timeline(tl, flags);
if (ret)
return ret;
}
@@ -4518,12 +4528,6 @@ i915_gem_cleanup_engines(struct drm_device *dev)
dev_priv->gt.cleanup_engine(engine);
}
-static void
-init_engine_lists(struct intel_engine_cs *engine)
-{
- INIT_LIST_HEAD(&engine->request_list);
-}
-
void
i915_gem_load_init_fences(struct drm_i915_private *dev_priv)
{
@@ -4556,22 +4560,32 @@ i915_gem_load_init_fences(struct drm_i915_private
*dev_priv)
i915_gem_detect_bit_6_swizzle(dev);
}
-void
+int
i915_gem_load_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
- int i;
+ int err;
dev_priv->objects =
kmem_cache_create("i915_gem_object",
sizeof(struct drm_i915_gem_object), 0,
SLAB_HWCACHE_ALIGN,
NULL);
+ if (!dev_priv->objects) {
+ err = -ENOMEM;
+ goto err_out;
+ }
+
dev_priv->vmas =
kmem_cache_create("i915_gem_vma",
sizeof(struct i915_vma), 0,
SLAB_HWCACHE_ALIGN,
NULL);
+ if (!dev_priv->vmas) {
+ err = -ENOMEM;
+ goto err_objects;
+ }
+
dev_priv->requests =
kmem_cache_create("i915_gem_request",
sizeof(struct drm_i915_gem_request), 0,
@@ -4579,6 +4593,19 @@ i915_gem_load_init(struct drm_device *dev)
SLAB_RECLAIM_ACCOUNT |
SLAB_DESTROY_BY_RCU,
NULL);
+ if (!dev_priv->requests) {
+ err = -ENOMEM;
+ goto err_vmas;
+ }
+
+ mutex_lock(&dev_priv->drm.struct_mutex);
+ INIT_LIST_HEAD(&dev_priv->gt.timelines);
+ err = i915_gem_timeline_init(dev_priv,
+ &dev_priv->gt.global_timeline,
+ "[execution]");
+ mutex_unlock(&dev_priv->drm.struct_mutex);
+ if (err)
+ goto err_requests;
INIT_LIST_HEAD(&dev_priv->context_list);
INIT_WORK(&dev_priv->mm.free_work, __i915_gem_free_work);
@@ -4586,8 +4613,6 @@ i915_gem_load_init(struct drm_device *dev)
INIT_LIST_HEAD(&dev_priv->mm.unbound_list);
INIT_LIST_HEAD(&dev_priv->mm.bound_list);
INIT_LIST_HEAD(&dev_priv->mm.fence_list);
- for (i = 0; i < I915_NUM_ENGINES; i++)
- init_engine_lists(&dev_priv->engine[i]);
INIT_DELAYED_WORK(&dev_priv->gt.retire_work,
i915_gem_retire_work_handler);
INIT_DELAYED_WORK(&dev_priv->gt.idle_work,
@@ -4604,6 +4629,17 @@ i915_gem_load_init(struct drm_device *dev)
atomic_set(&dev_priv->mm.bsd_engine_dispatch_index, 0);
spin_lock_init(&dev_priv->fb_tracking.lock);
+
+ return 0;
+
+err_requests:
+ kmem_cache_destroy(dev_priv->requests);
+err_vmas:
+ kmem_cache_destroy(dev_priv->vmas);
+err_objects:
+ kmem_cache_destroy(dev_priv->objects);
+err_out:
+ return err;
}
void i915_gem_load_cleanup(struct drm_device *dev)
diff --git a/drivers/gpu/drm/i915/i915_gem.h b/drivers/gpu/drm/i915/i915_gem.h
index 8292e797d9b5..735580d72eb1 100644
--- a/drivers/gpu/drm/i915/i915_gem.h
+++ b/drivers/gpu/drm/i915/i915_gem.h
@@ -31,4 +31,6 @@
#define GEM_BUG_ON(expr)
#endif
+#define I915_NUM_ENGINES 5
+
#endif /* __I915_GEM_H__ */
diff --git a/drivers/gpu/drm/i915/i915_gem_request.c
b/drivers/gpu/drm/i915/i915_gem_request.c
index c57ff09cfd4f..998387e53e5e 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.c
+++ b/drivers/gpu/drm/i915/i915_gem_request.c
@@ -40,7 +40,7 @@ static const char *i915_fence_get_timeline_name(struct fence
*fence)
* multiple execution contexts (fence contexts) as we allow
* engines within a single timeline to execute in parallel.
*/
- return "global";
+ return to_request(fence)->timeline->common->name;
}
static bool i915_fence_signaled(struct fence *fence)
@@ -208,7 +208,7 @@ void i915_gem_request_retire_upto(struct
drm_i915_gem_request *req)
return;
do {
- tmp = list_first_entry(&engine->request_list,
+ tmp = list_first_entry(&engine->timeline->requests,
typeof(*tmp), link);
i915_gem_request_retire(tmp);
@@ -235,23 +235,24 @@ static int i915_gem_check_wedge(struct drm_i915_private
*dev_priv)
return 0;
}
-static int i915_gem_init_seqno(struct drm_i915_private *dev_priv, u32 seqno)
+static int i915_gem_init_global_seqno(struct drm_i915_private *dev_priv,
+ u32 seqno)
{
struct intel_engine_cs *engine;
int ret;
/* Carefully retire all requests without writing to the rings */
- for_each_engine(engine, dev_priv) {
- ret = intel_engine_idle(engine,
- I915_WAIT_INTERRUPTIBLE |
- I915_WAIT_LOCKED);
- if (ret)
- return ret;
- }
+ ret = i915_gem_wait_for_idle(dev_priv,
+ I915_WAIT_INTERRUPTIBLE |
+ I915_WAIT_LOCKED);
+ if (ret)
+ return ret;
+
i915_gem_retire_requests(dev_priv);
/* If the seqno wraps around, we need to clear the breadcrumb rbtree */
- if (!i915_seqno_passed(seqno, dev_priv->next_seqno)) {
+ if (!i915_seqno_passed(seqno,
+ dev_priv->gt.global_timeline.next_seqno)) {
while (intel_kick_waiters(dev_priv) ||
intel_kick_signalers(dev_priv))
yield();
@@ -259,12 +260,12 @@ static int i915_gem_init_seqno(struct drm_i915_private
*dev_priv, u32 seqno)
/* Finally reset hw state */
for_each_engine(engine, dev_priv)
- intel_engine_init_seqno(engine, seqno);
+ intel_engine_init_global_seqno(engine, seqno);
return 0;
}
-int i915_gem_set_seqno(struct drm_device *dev, u32 seqno)
+int i915_gem_set_global_seqno(struct drm_device *dev, u32 seqno)
{
struct drm_i915_private *dev_priv = to_i915(dev);
int ret;
@@ -277,28 +278,31 @@ int i915_gem_set_seqno(struct drm_device *dev, u32 seqno)
/* HWS page needs to be set less than what we
* will inject to ring
*/
- ret = i915_gem_init_seqno(dev_priv, seqno - 1);
+ ret = i915_gem_init_global_seqno(dev_priv, seqno - 1);
if (ret)
return ret;
- dev_priv->next_seqno = seqno;
+ dev_priv->gt.global_timeline.next_seqno = seqno;
return 0;
}
-static int i915_gem_get_seqno(struct drm_i915_private *dev_priv, u32 *seqno)
+static int i915_gem_get_global_seqno(struct drm_i915_private *dev_priv,
+ u32 *seqno)
{
+ struct i915_gem_timeline *tl = &dev_priv->gt.global_timeline;
+
/* reserve 0 for non-seqno */
- if (unlikely(dev_priv->next_seqno == 0)) {
+ if (unlikely(tl->next_seqno == 0)) {
int ret;
- ret = i915_gem_init_seqno(dev_priv, 0);
+ ret = i915_gem_init_global_seqno(dev_priv, 0);
if (ret)
return ret;
- dev_priv->next_seqno = 1;
+ tl->next_seqno = 1;
}
- *seqno = dev_priv->next_seqno++;
+ *seqno = tl->next_seqno++;
return 0;
}
@@ -352,7 +356,7 @@ i915_gem_request_alloc(struct intel_engine_cs *engine,
return ERR_PTR(ret);
/* Move the oldest request to the slab-cache (if not in use!) */
- req = list_first_entry_or_null(&engine->request_list,
+ req = list_first_entry_or_null(&engine->timeline->requests,
typeof(*req), link);
if (req && i915_gem_request_completed(req))
i915_gem_request_retire(req);
@@ -389,15 +393,17 @@ i915_gem_request_alloc(struct intel_engine_cs *engine,
if (!req)
return ERR_PTR(-ENOMEM);
- ret = i915_gem_get_seqno(dev_priv, &seqno);
+ ret = i915_gem_get_global_seqno(dev_priv, &seqno);
if (ret)
goto err;
+ req->timeline = engine->timeline;
+
spin_lock_init(&req->lock);
fence_init(&req->fence,
&i915_fence_ops,
&req->lock,
- engine->fence_context,
+ req->timeline->fence_context,
seqno);
i915_sw_fence_init(&req->submit, submit_notify);
@@ -452,9 +458,15 @@ i915_gem_request_await_request(struct drm_i915_gem_request
*to,
GEM_BUG_ON(to == from);
- if (to->engine == from->engine)
+ if (to->timeline == from->timeline)
return 0;
+ if (to->engine == from->engine) {
+ ret = i915_sw_fence_await_sw_fence(&to->submit, &from->submit,
+ NULL, GFP_KERNEL);
+ return ret < 0 ? ret : 0;
+ }
+
idx = intel_engine_sync_index(from->engine, to->engine);
if (from->fence.seqno <= from->engine->semaphore.sync_seqno[idx])
return 0;
@@ -609,6 +621,7 @@ void __i915_add_request(struct drm_i915_gem_request
*request, bool flush_caches)
{
struct intel_engine_cs *engine = request->engine;
struct intel_ring *ring = request->ring;
+ struct intel_timeline *timeline = request->timeline;
struct drm_i915_gem_request *prev;
u32 request_start;
u32 reserved_tail;
@@ -666,17 +679,17 @@ void __i915_add_request(struct drm_i915_gem_request
*request, bool flush_caches)
* see a more recent value in the hws than we are tracking.
*/
- prev = i915_gem_active_raw(&engine->last_request,
+ prev = i915_gem_active_raw(&timeline->last_request,
&request->i915->drm.struct_mutex);
if (prev)
i915_sw_fence_await_sw_fence(&request->submit, &prev->submit,
&request->submitq, GFP_NOWAIT);
request->emitted_jiffies = jiffies;
- request->previous_seqno = engine->last_submitted_seqno;
- engine->last_submitted_seqno = request->fence.seqno;
- i915_gem_active_set(&engine->last_request, request);
- list_add_tail(&request->link, &engine->request_list);
+ request->previous_seqno = timeline->last_submitted_seqno;
+ timeline->last_submitted_seqno = request->fence.seqno;
+ i915_gem_active_set(&timeline->last_request, request);
+ list_add_tail(&request->link, &timeline->requests);
list_add_tail(&request->ring_link, &ring->request_list);
i915_gem_mark_busy(engine);
@@ -877,7 +890,8 @@ static bool engine_retire_requests(struct intel_engine_cs
*engine)
{
struct drm_i915_gem_request *request, *next;
- list_for_each_entry_safe(request, next, &engine->request_list, link) {
+ list_for_each_entry_safe(request, next,
+ &engine->timeline->requests, link) {
if (!i915_gem_request_completed(request))
return false;
diff --git a/drivers/gpu/drm/i915/i915_gem_request.h
b/drivers/gpu/drm/i915/i915_gem_request.h
index b8feff5857a0..378f523844bb 100644
--- a/drivers/gpu/drm/i915/i915_gem_request.h
+++ b/drivers/gpu/drm/i915/i915_gem_request.h
@@ -81,6 +81,7 @@ struct drm_i915_gem_request {
struct i915_gem_context *ctx;
struct intel_engine_cs *engine;
struct intel_ring *ring;
+ struct intel_timeline *timeline;
struct intel_signal_node signaling;
struct i915_sw_fence submit;
diff --git a/drivers/gpu/drm/i915/i915_gem_timeline.c
b/drivers/gpu/drm/i915/i915_gem_timeline.c
new file mode 100644
index 000000000000..a4579c109066
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_gem_timeline.c
@@ -0,0 +1,64 @@
+/*
+ * 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_drv.h"
+
+int i915_gem_timeline_init(struct drm_i915_private *i915,
+ struct i915_gem_timeline *timeline,
+ const char *name)
+{
+ unsigned int i;
+ u64 fences;
+
+ lockdep_assert_held(&i915->drm.struct_mutex);
+
+ timeline->i915 = i915;
+ timeline->name = kstrdup(name ?: "[kernel]", GFP_KERNEL);
+ if (!timeline->name)
+ return -ENOMEM;
+
+ list_add(&timeline->link, &i915->gt.timelines);
+
+ /* Called during early_init before we know how many engines there are */
+ fences = fence_context_alloc(ARRAY_SIZE(timeline->engine));
+ for (i = 0; i < ARRAY_SIZE(timeline->engine); i++) {
+ struct intel_timeline *tl = &timeline->engine[i];
+
+ tl->fence_context = fences++;
+ tl->common = timeline;
+
+ init_request_active(&tl->last_request, NULL);
+ INIT_LIST_HEAD(&tl->requests);
+ }
+
+ return 0;
+}
+
+void i915_gem_timeline_fini(struct i915_gem_timeline *tl)
+{
+ lockdep_assert_held(&tl->i915->drm.struct_mutex);
+
+ list_del(&tl->link);
+ kfree(tl->name);
+}
diff --git a/drivers/gpu/drm/i915/i915_gem_timeline.h
b/drivers/gpu/drm/i915/i915_gem_timeline.h
new file mode 100644
index 000000000000..be34c2e5ac85
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_gem_timeline.h
@@ -0,0 +1,69 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef I915_GEM_TIMELINE_H
+#define I915_GEM_TIMELINE_H
+
+#include <linux/list.h>
+
+#include "i915_gem_request.h"
+
+struct i915_gem_timeline;
+
+struct intel_timeline {
+ u64 fence_context;
+ u32 last_submitted_seqno;
+
+ /**
+ * List of breadcrumbs associated with GPU requests currently
+ * outstanding.
+ */
+ struct list_head requests;
+
+ /* Contains an RCU guarded pointer to the last request. No reference is
+ * held to the request, users must carefully acquire a reference to
+ * the request using i915_gem_active_get_request_rcu(), or hold the
+ * struct_mutex.
+ */
+ struct i915_gem_active last_request;
+
+ struct i915_gem_timeline *common;
+};
+
+struct i915_gem_timeline {
+ struct list_head link;
+ u32 next_seqno;
+
+ struct drm_i915_private *i915;
+ const char *name;
+
+ struct intel_timeline engine[I915_NUM_ENGINES];
+};
+
+int i915_gem_timeline_init(struct drm_i915_private *i915,
+ struct i915_gem_timeline *tl,
+ const char *name);
+void i915_gem_timeline_fini(struct i915_gem_timeline *tl);
+
+#endif
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c
b/drivers/gpu/drm/i915/i915_gpu_error.c
index b7687a1faf30..ee74d6ead9af 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1061,7 +1061,7 @@ static void error_record_engine_registers(struct
drm_i915_error_state *error,
ee->instpm = I915_READ(RING_INSTPM(engine->mmio_base));
ee->acthd = intel_engine_get_active_head(engine);
ee->seqno = intel_engine_get_seqno(engine);
- ee->last_seqno = engine->last_submitted_seqno;
+ ee->last_seqno = engine->timeline->last_submitted_seqno;
ee->start = I915_READ_START(engine);
ee->head = I915_READ_HEAD(engine);
ee->tail = I915_READ_TAIL(engine);
@@ -1132,7 +1132,7 @@ static void engine_record_requests(struct intel_engine_cs
*engine,
count = 0;
request = first;
- list_for_each_entry_from(request, &engine->request_list, link)
+ list_for_each_entry_from(request, &engine->timeline->requests, link)
count++;
if (!count)
return;
@@ -1145,7 +1145,7 @@ static void engine_record_requests(struct intel_engine_cs
*engine,
count = 0;
request = first;
- list_for_each_entry_from(request, &engine->request_list, link) {
+ list_for_each_entry_from(request, &engine->timeline->requests, link) {
struct drm_i915_error_request *erq;
if (count >= ee->num_requests) {
diff --git a/drivers/gpu/drm/i915/i915_guc_submission.c
b/drivers/gpu/drm/i915/i915_guc_submission.c
index 43358e18d34c..7aa5f806f9bc 100644
--- a/drivers/gpu/drm/i915/i915_guc_submission.c
+++ b/drivers/gpu/drm/i915/i915_guc_submission.c
@@ -1025,7 +1025,8 @@ int i915_guc_submission_enable(struct drm_i915_private
*dev_priv)
engine->submit_request = i915_guc_submit;
/* Replay the current set of previously submitted requests */
- list_for_each_entry(request, &engine->request_list, link) {
+ list_for_each_entry(request,
+ &engine->timeline->requests, link) {
client->wq_rsvd += sizeof(struct guc_wq_item);
if (i915_sw_fence_done(&request->submit))
i915_guc_submit(request);
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index c128fdbd24e4..1cbb89155f6b 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -3094,7 +3094,7 @@ static void i915_hangcheck_elapsed(struct work_struct
*work)
acthd = intel_engine_get_active_head(engine);
seqno = intel_engine_get_seqno(engine);
- submit = READ_ONCE(engine->last_submitted_seqno);
+ submit = READ_ONCE(engine->timeline->last_submitted_seqno);
if (engine->hangcheck.seqno == seqno) {
if (i915_seqno_passed(seqno, submit)) {
diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c
b/drivers/gpu/drm/i915/intel_engine_cs.c
index c81980fdadc1..1e23d171349f 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -161,7 +161,7 @@ cleanup:
return ret;
}
-void intel_engine_init_seqno(struct intel_engine_cs *engine, u32 seqno)
+void intel_engine_init_global_seqno(struct intel_engine_cs *engine, u32 seqno)
{
struct drm_i915_private *dev_priv = engine->i915;
@@ -197,7 +197,7 @@ void intel_engine_init_seqno(struct intel_engine_cs
*engine, u32 seqno)
intel_write_status_page(engine, I915_GEM_HWS_INDEX, seqno);
if (engine->irq_seqno_barrier)
engine->irq_seqno_barrier(engine);
- engine->last_submitted_seqno = seqno;
+ engine->timeline->last_submitted_seqno = seqno;
engine->hangcheck.seqno = seqno;
@@ -215,10 +215,9 @@ void intel_engine_init_hangcheck(struct intel_engine_cs
*engine)
i915_queue_hangcheck(engine->i915);
}
-static void intel_engine_init_requests(struct intel_engine_cs *engine)
+static void intel_engine_init_timeline(struct intel_engine_cs *engine)
{
- init_request_active(&engine->last_request, NULL);
- INIT_LIST_HEAD(&engine->request_list);
+ engine->timeline = &engine->i915->gt.global_timeline.engine[engine->id];
}
/**
@@ -235,9 +234,7 @@ void intel_engine_setup_common(struct intel_engine_cs
*engine)
INIT_LIST_HEAD(&engine->execlist_queue);
spin_lock_init(&engine->execlist_lock);
- engine->fence_context = fence_context_alloc(1);
-
- intel_engine_init_requests(engine);
+ intel_engine_init_timeline(engine);
intel_engine_init_hangcheck(engine);
i915_gem_batch_pool_init(engine, &engine->batch_pool);
diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h
b/drivers/gpu/drm/i915/intel_ringbuffer.h
index b3e08ce6d57f..2bee908066d0 100644
--- a/drivers/gpu/drm/i915/intel_ringbuffer.h
+++ b/drivers/gpu/drm/i915/intel_ringbuffer.h
@@ -4,6 +4,7 @@
#include <linux/hashtable.h>
#include "i915_gem_batch_pool.h"
#include "i915_gem_request.h"
+#include "i915_gem_timeline.h"
#define I915_CMD_HASH_ORDER 9
@@ -142,7 +143,6 @@ struct intel_engine_cs {
VCS2, /* Keep instances of the same type engine together. */
VECS
} id;
-#define I915_NUM_ENGINES 5
#define _VCS(n) (VCS + (n))
unsigned int exec_id;
enum intel_engine_hw_id {
@@ -153,10 +153,10 @@ struct intel_engine_cs {
VCS2_HW
} hw_id;
enum intel_engine_hw_id guc_id; /* XXX same as hw_id? */
- u64 fence_context;
u32 mmio_base;
unsigned int irq_shift;
struct intel_ring *buffer;
+ struct intel_timeline *timeline;
struct intel_render_state *render_state;
@@ -319,26 +319,6 @@ struct intel_engine_cs {
bool preempt_wa;
u32 ctx_desc_template;
- /**
- * List of breadcrumbs associated with GPU requests currently
- * outstanding.
- */
- struct list_head request_list;
-
- /**
- * Seqno of request most recently submitted to request_list.
- * Used exclusively by hang checker to avoid grabbing lock while
- * inspecting request list.
- */
- u32 last_submitted_seqno;
-
- /* An RCU guarded pointer to the last request. No reference is
- * held to the request, users must carefully acquire a reference to
- * the request using i915_gem_active_get_rcu(), or hold the
- * struct_mutex.
- */
- struct i915_gem_active last_request;
-
struct i915_gem_context *last_context;
struct intel_engine_hangcheck hangcheck;
@@ -494,7 +474,7 @@ static inline u32 intel_ring_offset(struct intel_ring
*ring, u32 value)
int __intel_ring_space(int head, int tail, int size);
void intel_ring_update_space(struct intel_ring *ring);
-void intel_engine_init_seqno(struct intel_engine_cs *engine, u32 seqno);
+void intel_engine_init_global_seqno(struct intel_engine_cs *engine, u32 seqno);
void intel_engine_reset_irq(struct intel_engine_cs *engine);
void intel_engine_setup_common(struct intel_engine_cs *engine);
@@ -502,13 +482,6 @@ int intel_engine_init_common(struct intel_engine_cs
*engine);
int intel_engine_create_scratch(struct intel_engine_cs *engine, int size);
void intel_engine_cleanup_common(struct intel_engine_cs *engine);
-static inline int intel_engine_idle(struct intel_engine_cs *engine,
- unsigned int flags)
-{
- /* Wait upon the last request to be completed */
- return i915_gem_active_wait(&engine->last_request, flags);
-}
-
int intel_init_render_ring_buffer(struct intel_engine_cs *engine);
int intel_init_bsd_ring_buffer(struct intel_engine_cs *engine);
int intel_init_bsd2_ring_buffer(struct intel_engine_cs *engine);
@@ -592,7 +565,7 @@ unsigned int intel_kick_signalers(struct drm_i915_private
*i915);
static inline bool intel_engine_is_active(struct intel_engine_cs *engine)
{
- return i915_gem_active_isset(&engine->last_request);
+ return i915_gem_active_isset(&engine->timeline->last_request);
}
#endif /* _INTEL_RINGBUFFER_H_ */
--
2.9.3
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