Requests are run from the gt and are tided into the gt runtime power
management, so pull the runtime request management under gt/

Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursu...@intel.com>
---
 drivers/gpu/drm/i915/Makefile                 |   1 +
 drivers/gpu/drm/i915/gem/i915_gem_mman.c      |   4 +-
 drivers/gpu/drm/i915/gem/i915_gem_pm.c        |  28 +---
 .../drm/i915/gem/selftests/i915_gem_context.c |   5 +-
 .../drm/i915/gem/selftests/i915_gem_mman.c    |   2 +-
 drivers/gpu/drm/i915/gt/intel_gt.c            |   2 +
 drivers/gpu/drm/i915/gt/intel_gt_pm.c         |   5 +-
 drivers/gpu/drm/i915/gt/intel_gt_requests.c   | 123 ++++++++++++++++++
 drivers/gpu/drm/i915/gt/intel_gt_requests.h   |  24 ++++
 drivers/gpu/drm/i915/gt/intel_gt_types.h      |  11 ++
 drivers/gpu/drm/i915/gt/selftest_timeline.c   |   8 +-
 drivers/gpu/drm/i915/i915_debugfs.c           |  17 +--
 drivers/gpu/drm/i915/i915_drv.h               |  10 --
 drivers/gpu/drm/i915/i915_gem.c               |  17 ---
 drivers/gpu/drm/i915/i915_gem_evict.c         |  14 +-
 drivers/gpu/drm/i915/i915_gem_gtt.c           |   5 +-
 drivers/gpu/drm/i915/i915_request.c           |  64 +--------
 drivers/gpu/drm/i915/i915_request.h           |   7 +-
 .../gpu/drm/i915/selftests/igt_flush_test.c   |   9 +-
 .../gpu/drm/i915/selftests/igt_live_test.c    |   5 +-
 .../gpu/drm/i915/selftests/mock_gem_device.c  |  10 +-
 21 files changed, 213 insertions(+), 158 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/gt/intel_gt_requests.c
 create mode 100644 drivers/gpu/drm/i915/gt/intel_gt_requests.h

diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile
index d2b53b5add81..06e1876d0250 100644
--- a/drivers/gpu/drm/i915/Makefile
+++ b/drivers/gpu/drm/i915/Makefile
@@ -83,6 +83,7 @@ gt-y += \
        gt/intel_gt_irq.o \
        gt/intel_gt_pm.o \
        gt/intel_gt_pm_irq.o \
+       gt/intel_gt_requests.o \
        gt/intel_hangcheck.o \
        gt/intel_lrc.o \
        gt/intel_rc6.o \
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c 
b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
index 45bbd22c14f1..fd4122d8c0a9 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
@@ -8,6 +8,7 @@
 #include <linux/sizes.h>
 
 #include "gt/intel_gt.h"
+#include "gt/intel_gt_requests.h"
 
 #include "i915_drv.h"
 #include "i915_gem_gtt.h"
@@ -424,6 +425,7 @@ void i915_gem_object_release_mmap(struct 
drm_i915_gem_object *obj)
 static int create_mmap_offset(struct drm_i915_gem_object *obj)
 {
        struct drm_i915_private *i915 = to_i915(obj->base.dev);
+       struct intel_gt *gt = &i915->gt;
        int err;
 
        err = drm_gem_create_mmap_offset(&obj->base);
@@ -431,7 +433,7 @@ static int create_mmap_offset(struct drm_i915_gem_object 
*obj)
                return 0;
 
        /* Attempt to reap some mmap space from dead objects */
-       err = i915_retire_requests_timeout(i915, MAX_SCHEDULE_TIMEOUT);
+       err = intel_gt_retire_requests_timeout(gt, MAX_SCHEDULE_TIMEOUT);
        if (err)
                return err;
 
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pm.c 
b/drivers/gpu/drm/i915/gem/i915_gem_pm.c
index 90b211257f2d..9194d8464bf7 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pm.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_pm.c
@@ -7,31 +7,18 @@
 #include "gem/i915_gem_pm.h"
 #include "gt/intel_gt.h"
 #include "gt/intel_gt_pm.h"
+#include "gt/intel_gt_requests.h"
 
 #include "i915_drv.h"
 #include "i915_globals.h"
 
 static void i915_gem_park(struct drm_i915_private *i915)
 {
-       cancel_delayed_work(&i915->gem.retire_work);
-
        i915_vma_parked(i915);
 
        i915_globals_park();
 }
 
-static void retire_work_handler(struct work_struct *work)
-{
-       struct drm_i915_private *i915 =
-               container_of(work, typeof(*i915), gem.retire_work.work);
-
-       i915_retire_requests(i915);
-
-       queue_delayed_work(i915->wq,
-                          &i915->gem.retire_work,
-                          round_jiffies_up_relative(HZ));
-}
-
 static int pm_notifier(struct notifier_block *nb,
                       unsigned long action,
                       void *data)
@@ -42,9 +29,6 @@ static int pm_notifier(struct notifier_block *nb,
        switch (action) {
        case INTEL_GT_UNPARK:
                i915_globals_unpark();
-               queue_delayed_work(i915->wq,
-                                  &i915->gem.retire_work,
-                                  round_jiffies_up_relative(HZ));
                break;
 
        case INTEL_GT_PARK:
@@ -59,7 +43,7 @@ static bool switch_to_kernel_context_sync(struct intel_gt *gt)
 {
        bool result = !intel_gt_is_wedged(gt);
 
-       if (i915_gem_wait_for_idle(gt->i915, I915_GEM_IDLE_TIMEOUT) == -ETIME) {
+       if (intel_gt_wait_for_idle(gt, I915_GEM_IDLE_TIMEOUT) == -ETIME) {
                /* XXX hide warning from gem_eio */
                if (i915_modparams.reset) {
                        dev_err(gt->i915->drm.dev,
@@ -122,14 +106,12 @@ void i915_gem_suspend(struct drm_i915_private *i915)
         * state. Fortunately, the kernel_context is disposable and we do
         * not rely on its state.
         */
-       switch_to_kernel_context_sync(&i915->gt);
+       intel_gt_suspend(&i915->gt);
+       intel_uc_suspend(&i915->gt.uc);
 
        cancel_delayed_work_sync(&i915->gt.hangcheck.work);
 
        i915_gem_drain_freed_objects(i915);
-
-       intel_uc_suspend(&i915->gt.uc);
-       intel_gt_suspend(&i915->gt);
 }
 
 static struct drm_i915_gem_object *first_mm_object(struct list_head *list)
@@ -239,8 +221,6 @@ void i915_gem_resume(struct drm_i915_private *i915)
 
 void i915_gem_init__pm(struct drm_i915_private *i915)
 {
-       INIT_DELAYED_WORK(&i915->gem.retire_work, retire_work_handler);
-
        i915->gem.pm_notifier.notifier_call = pm_notifier;
        blocking_notifier_chain_register(&i915->gt.pm_notifications,
                                         &i915->gem.pm_notifier);
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c 
b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
index f902aeee1755..2288757808ae 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
@@ -8,6 +8,7 @@
 
 #include "gem/i915_gem_pm.h"
 #include "gt/intel_gt.h"
+#include "gt/intel_gt_requests.h"
 #include "gt/intel_reset.h"
 #include "i915_selftest.h"
 
@@ -518,7 +519,7 @@ create_test_object(struct i915_address_space *vm,
        int err;
 
        /* Keep in GEM's good graces */
-       i915_retire_requests(vm->i915);
+       intel_gt_retire_requests(vm->gt);
 
        size = min(vm->total / 2, 1024ull * DW_PER_PAGE * PAGE_SIZE);
        size = round_down(size, DW_PER_PAGE * PAGE_SIZE);
@@ -1136,7 +1137,7 @@ __sseu_finish(const char *name,
                igt_spinner_end(spin);
 
        if ((flags & TEST_IDLE) && ret == 0) {
-               ret = i915_gem_wait_for_idle(ce->engine->i915,
+               ret = intel_gt_wait_for_idle(ce->engine->gt,
                                             MAX_SCHEDULE_TIMEOUT);
                if (ret)
                        return ret;
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c 
b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index 4ba6ed5c8313..1cd25cfd0246 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -573,7 +573,7 @@ static void disable_retire_worker(struct drm_i915_private 
*i915)
 {
        i915_gem_driver_unregister__shrinker(i915);
        intel_gt_pm_get(&i915->gt);
-       cancel_delayed_work_sync(&i915->gem.retire_work);
+       cancel_delayed_work_sync(&i915->gt.requests.retire_work);
 }
 
 static void restore_retire_worker(struct drm_i915_private *i915)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c 
b/drivers/gpu/drm/i915/gt/intel_gt.c
index 7205595369be..53220741e49e 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -6,6 +6,7 @@
 #include "i915_drv.h"
 #include "intel_gt.h"
 #include "intel_gt_pm.h"
+#include "intel_gt_requests.h"
 #include "intel_mocs.h"
 #include "intel_rc6.h"
 #include "intel_uncore.h"
@@ -23,6 +24,7 @@ void intel_gt_init_early(struct intel_gt *gt, struct 
drm_i915_private *i915)
 
        intel_gt_init_hangcheck(gt);
        intel_gt_init_reset(gt);
+       intel_gt_init_requests(gt);
        intel_gt_pm_init_early(gt);
        intel_uc_init_early(&gt->uc);
 }
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c 
b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
index bdb34f03ec47..d2e80ba64d69 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
@@ -10,6 +10,7 @@
 #include "intel_engine_pm.h"
 #include "intel_gt.h"
 #include "intel_gt_pm.h"
+#include "intel_gt_requests.h"
 #include "intel_pm.h"
 #include "intel_rc6.h"
 #include "intel_wakeref.h"
@@ -49,6 +50,7 @@ static int __gt_unpark(struct intel_wakeref *wf)
        i915_pmu_gt_unparked(i915);
 
        intel_gt_queue_hangcheck(gt);
+       intel_gt_unpark_requests(gt);
 
        pm_notify(gt, INTEL_GT_UNPARK);
 
@@ -64,6 +66,7 @@ static int __gt_park(struct intel_wakeref *wf)
        GEM_TRACE("\n");
 
        pm_notify(gt, INTEL_GT_PARK);
+       intel_gt_park_requests(gt);
 
        i915_pmu_gt_parked(i915);
        if (INTEL_GEN(i915) >= 6)
@@ -196,7 +199,7 @@ int intel_gt_resume(struct intel_gt *gt)
 
 static void wait_for_idle(struct intel_gt *gt)
 {
-       if (i915_gem_wait_for_idle(gt->i915, I915_GEM_IDLE_TIMEOUT) == -ETIME) {
+       if (intel_gt_wait_for_idle(gt, I915_GEM_IDLE_TIMEOUT) == -ETIME) {
                /*
                 * Forcibly cancel outstanding work and leave
                 * the gpu quiet.
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_requests.c 
b/drivers/gpu/drm/i915/gt/intel_gt_requests.c
new file mode 100644
index 000000000000..8aed89fd2cdc
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_gt_requests.c
@@ -0,0 +1,123 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#include "i915_request.h"
+#include "intel_gt.h"
+#include "intel_gt_pm.h"
+#include "intel_gt_requests.h"
+#include "intel_timeline.h"
+
+static void retire_requests(struct intel_timeline *tl)
+{
+       struct i915_request *rq, *rn;
+
+       list_for_each_entry_safe(rq, rn, &tl->requests, link)
+               if (!i915_request_retire(rq))
+                       break;
+}
+
+long intel_gt_retire_requests_timeout(struct intel_gt *gt, long timeout)
+{
+       struct intel_gt_timelines *timelines = &gt->timelines;
+       struct intel_timeline *tl, *tn;
+       unsigned long active_count = 0;
+       unsigned long flags;
+       bool interruptible;
+       LIST_HEAD(free);
+
+       interruptible = true;
+       if (unlikely(timeout < 0))
+               timeout = -timeout, interruptible = false;
+
+       spin_lock_irqsave(&timelines->lock, flags);
+       list_for_each_entry_safe(tl, tn, &timelines->active_list, link) {
+               if (!mutex_trylock(&tl->mutex))
+                       continue;
+
+               intel_timeline_get(tl);
+               GEM_BUG_ON(!tl->active_count);
+               tl->active_count++; /* pin the list element */
+               spin_unlock_irqrestore(&timelines->lock, flags);
+
+               if (timeout > 0) {
+                       struct dma_fence *fence;
+
+                       fence = i915_active_fence_get(&tl->last_request);
+                       if (fence) {
+                               timeout = dma_fence_wait_timeout(fence,
+                                                                true,
+                                                                timeout);
+                               dma_fence_put(fence);
+                       }
+               }
+
+               retire_requests(tl);
+
+               spin_lock_irqsave(&timelines->lock, flags);
+
+               /* Resume iteration after dropping lock */
+               list_safe_reset_next(tl, tn, link);
+               if (--tl->active_count)
+                       active_count += 
!!rcu_access_pointer(tl->last_request.fence);
+               else
+                       list_del(&tl->link);
+
+               mutex_unlock(&tl->mutex);
+
+               /* Defer the final release to after the spinlock */
+               if (refcount_dec_and_test(&tl->kref.refcount)) {
+                       GEM_BUG_ON(tl->active_count);
+                       list_add(&tl->link, &free);
+               }
+       }
+       spin_unlock_irqrestore(&timelines->lock, flags);
+
+       list_for_each_entry_safe(tl, tn, &free, link)
+               __intel_timeline_free(&tl->kref);
+
+       return active_count ? timeout : 0;
+}
+
+int intel_gt_wait_for_idle(struct intel_gt *gt, long timeout)
+{
+       /* If the device is asleep, we have no requests outstanding */
+       if (!intel_gt_pm_is_awake(gt))
+               return 0;
+
+       while ((timeout = intel_gt_retire_requests_timeout(gt, timeout)) > 0) {
+               cond_resched();
+               if (signal_pending(current))
+                       return -EINTR;
+       }
+
+       return timeout;
+}
+
+static void retire_work_handler(struct work_struct *work)
+{
+       struct intel_gt *gt =
+               container_of(work, typeof(*gt), requests.retire_work.work);
+
+       intel_gt_retire_requests(gt);
+       schedule_delayed_work(&gt->requests.retire_work,
+                             round_jiffies_up_relative(HZ));
+}
+
+void intel_gt_init_requests(struct intel_gt *gt)
+{
+       INIT_DELAYED_WORK(&gt->requests.retire_work, retire_work_handler);
+}
+
+void intel_gt_park_requests(struct intel_gt *gt)
+{
+       cancel_delayed_work(&gt->requests.retire_work);
+}
+
+void intel_gt_unpark_requests(struct intel_gt *gt)
+{
+       schedule_delayed_work(&gt->requests.retire_work,
+                             round_jiffies_up_relative(HZ));
+}
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_requests.h 
b/drivers/gpu/drm/i915/gt/intel_gt_requests.h
new file mode 100644
index 000000000000..bd31cbce47e0
--- /dev/null
+++ b/drivers/gpu/drm/i915/gt/intel_gt_requests.h
@@ -0,0 +1,24 @@
+/*
+ * SPDX-License-Identifier: MIT
+ *
+ * Copyright © 2019 Intel Corporation
+ */
+
+#ifndef INTEL_GT_REQUESTS_H
+#define INTEL_GT_REQUESTS_H
+
+struct intel_gt;
+
+long intel_gt_retire_requests_timeout(struct intel_gt *gt, long timeout);
+static inline void intel_gt_retire_requests(struct intel_gt *gt)
+{
+       intel_gt_retire_requests_timeout(gt, 0);
+}
+
+int intel_gt_wait_for_idle(struct intel_gt *gt, long timeout);
+
+void intel_gt_init_requests(struct intel_gt *gt);
+void intel_gt_park_requests(struct intel_gt *gt);
+void intel_gt_unpark_requests(struct intel_gt *gt);
+
+#endif /* INTEL_GT_REQUESTS_H */
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_types.h 
b/drivers/gpu/drm/i915/gt/intel_gt_types.h
index 7134f1319bbe..802f516a3430 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_gt_types.h
@@ -50,6 +50,17 @@ struct intel_gt {
                struct list_head hwsp_free_list;
        } timelines;
 
+       struct intel_gt_requests {
+               /**
+                * We leave the user IRQ off as much as possible,
+                * but this means that requests will finish and never
+                * be retired once the system goes idle. Set a timer to
+                * fire periodically while the ring is running. When it
+                * fires, go retire requests.
+                */
+               struct delayed_work retire_work;
+       } requests;
+
        struct intel_wakeref wakeref;
        atomic_t user_wakeref;
 
diff --git a/drivers/gpu/drm/i915/gt/selftest_timeline.c 
b/drivers/gpu/drm/i915/gt/selftest_timeline.c
index 16abfabf08c7..d6df40cdc8a6 100644
--- a/drivers/gpu/drm/i915/gt/selftest_timeline.c
+++ b/drivers/gpu/drm/i915/gt/selftest_timeline.c
@@ -8,6 +8,7 @@
 
 #include "intel_engine_pm.h"
 #include "intel_gt.h"
+#include "intel_gt_requests.h"
 
 #include "../selftests/i915_random.h"
 #include "../i915_selftest.h"
@@ -641,6 +642,7 @@ static int live_hwsp_alternate(void *arg)
 static int live_hwsp_wrap(void *arg)
 {
        struct drm_i915_private *i915 = arg;
+       struct intel_gt *gt = &i915->gt;
        struct intel_engine_cs *engine;
        struct intel_timeline *tl;
        enum intel_engine_id id;
@@ -651,7 +653,7 @@ static int live_hwsp_wrap(void *arg)
         * foreign GPU references.
         */
 
-       tl = intel_timeline_create(&i915->gt, NULL);
+       tl = intel_timeline_create(gt, NULL);
        if (IS_ERR(tl))
                return PTR_ERR(tl);
 
@@ -662,7 +664,7 @@ static int live_hwsp_wrap(void *arg)
        if (err)
                goto out_free;
 
-       for_each_engine(engine, i915, id) {
+       for_each_engine(engine, gt->i915, id) {
                const u32 *hwsp_seqno[2];
                struct i915_request *rq;
                u32 seqno[2];
@@ -734,7 +736,7 @@ static int live_hwsp_wrap(void *arg)
                        goto out;
                }
 
-               i915_retire_requests(i915); /* recycle HWSP */
+               intel_gt_retire_requests(gt); /* recycle HWSP */
        }
 
 out:
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c 
b/drivers/gpu/drm/i915/i915_debugfs.c
index 5888a658e2b7..2afc41e43b6e 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -41,6 +41,7 @@
 
 #include "gem/i915_gem_context.h"
 #include "gt/intel_gt_pm.h"
+#include "gt/intel_gt_requests.h"
 #include "gt/intel_reset.h"
 #include "gt/intel_rc6.h"
 #include "gt/uc/intel_guc_submission.h"
@@ -3621,33 +3622,33 @@ static int
 i915_drop_caches_set(void *data, u64 val)
 {
        struct drm_i915_private *i915 = data;
+       struct intel_gt *gt = &i915->gt;
        int ret;
 
        DRM_DEBUG("Dropping caches: 0x%08llx [0x%08llx]\n",
                  val, val & DROP_ALL);
 
        if (val & DROP_RESET_ACTIVE &&
-           wait_for(intel_engines_are_idle(&i915->gt),
-                    I915_IDLE_ENGINES_TIMEOUT))
-               intel_gt_set_wedged(&i915->gt);
+           wait_for(intel_engines_are_idle(gt), I915_IDLE_ENGINES_TIMEOUT))
+               intel_gt_set_wedged(gt);
 
        if (val & DROP_RETIRE)
-               i915_retire_requests(i915);
+               intel_gt_retire_requests(gt);
 
        if (val & (DROP_IDLE | DROP_ACTIVE)) {
-               ret = i915_gem_wait_for_idle(i915, MAX_SCHEDULE_TIMEOUT);
+               ret = intel_gt_wait_for_idle(gt, MAX_SCHEDULE_TIMEOUT);
                if (ret)
                        return ret;
        }
 
        if (val & DROP_IDLE) {
-               ret = intel_gt_pm_wait_for_idle(&i915->gt);
+               ret = intel_gt_pm_wait_for_idle(gt);
                if (ret)
                        return ret;
        }
 
-       if (val & DROP_RESET_ACTIVE && intel_gt_terminally_wedged(&i915->gt))
-               intel_gt_handle_error(&i915->gt, ALL_ENGINES, 0, NULL);
+       if (val & DROP_RESET_ACTIVE && intel_gt_terminally_wedged(gt))
+               intel_gt_handle_error(gt, ALL_ENGINES, 0, NULL);
 
        fs_reclaim_acquire(GFP_KERNEL);
        if (val & DROP_BOUND)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 44f3463ff9f1..cb63b2bd0ce8 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1710,15 +1710,6 @@ struct drm_i915_private {
 
        struct {
                struct notifier_block pm_notifier;
-
-               /**
-                * We leave the user IRQ off as much as possible,
-                * but this means that requests will finish and never
-                * be retired once the system goes idle. Set a timer to
-                * fire periodically while the ring is running. When it
-                * fires, go retire requests.
-                */
-               struct delayed_work retire_work;
        } gem;
 
        /* For i945gm vblank irq vs. C3 workaround */
@@ -2321,7 +2312,6 @@ void i915_gem_driver_register(struct drm_i915_private 
*i915);
 void i915_gem_driver_unregister(struct drm_i915_private *i915);
 void i915_gem_driver_remove(struct drm_i915_private *dev_priv);
 void i915_gem_driver_release(struct drm_i915_private *dev_priv);
-int i915_gem_wait_for_idle(struct drm_i915_private *dev_priv, long timeout);
 void i915_gem_suspend(struct drm_i915_private *dev_priv);
 void i915_gem_suspend_late(struct drm_i915_private *dev_priv);
 void i915_gem_resume(struct drm_i915_private *dev_priv);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 7c82fc39f655..5a664bdead8c 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -883,23 +883,6 @@ void i915_gem_runtime_suspend(struct drm_i915_private 
*i915)
        }
 }
 
-int i915_gem_wait_for_idle(struct drm_i915_private *i915, long timeout)
-{
-       struct intel_gt *gt = &i915->gt;
-
-       /* If the device is asleep, we have no requests outstanding */
-       if (!intel_gt_pm_is_awake(gt))
-               return 0;
-
-       while ((timeout = i915_retire_requests_timeout(i915, timeout)) > 0) {
-               cond_resched();
-               if (signal_pending(current))
-                       return -EINTR;
-       }
-
-       return timeout;
-}
-
 struct i915_vma *
 i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
                         const struct i915_ggtt_view *view,
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c 
b/drivers/gpu/drm/i915/i915_gem_evict.c
index 0a412f6d01d7..7e62c310290f 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -29,6 +29,7 @@
 #include <drm/i915_drm.h>
 
 #include "gem/i915_gem_context.h"
+#include "gt/intel_gt_requests.h"
 
 #include "i915_drv.h"
 #include "i915_trace.h"
@@ -37,7 +38,7 @@ I915_SELFTEST_DECLARE(static struct igt_evict_ctl {
        bool fail_if_busy:1;
 } igt_evict_ctl;)
 
-static int ggtt_flush(struct drm_i915_private *i915)
+static int ggtt_flush(struct intel_gt *gt)
 {
        /*
         * Not everything in the GGTT is tracked via vma (otherwise we
@@ -46,7 +47,7 @@ static int ggtt_flush(struct drm_i915_private *i915)
         * the hopes that we can then remove contexts and the like only
         * bound by their active reference.
         */
-       return i915_gem_wait_for_idle(i915, MAX_SCHEDULE_TIMEOUT);
+       return intel_gt_wait_for_idle(gt, MAX_SCHEDULE_TIMEOUT);
 }
 
 static bool
@@ -92,7 +93,6 @@ i915_gem_evict_something(struct i915_address_space *vm,
                         u64 start, u64 end,
                         unsigned flags)
 {
-       struct drm_i915_private *dev_priv = vm->i915;
        struct drm_mm_scan scan;
        struct list_head eviction_list;
        struct i915_vma *vma, *next;
@@ -124,7 +124,7 @@ i915_gem_evict_something(struct i915_address_space *vm,
                                    min_size, alignment, color,
                                    start, end, mode);
 
-       i915_retire_requests(vm->i915);
+       intel_gt_retire_requests(vm->gt);
 
 search_again:
        active = NULL;
@@ -197,7 +197,7 @@ i915_gem_evict_something(struct i915_address_space *vm,
        if (I915_SELFTEST_ONLY(igt_evict_ctl.fail_if_busy))
                return -EBUSY;
 
-       ret = ggtt_flush(dev_priv);
+       ret = ggtt_flush(vm->gt);
        if (ret)
                return ret;
 
@@ -270,7 +270,7 @@ int i915_gem_evict_for_node(struct i915_address_space *vm,
         * a stray pin (preventing eviction) that can only be resolved by
         * retiring.
         */
-       i915_retire_requests(vm->i915);
+       intel_gt_retire_requests(vm->gt);
 
        if (i915_vm_has_cache_coloring(vm)) {
                /* Expand search to cover neighbouring guard pages (or lack!) */
@@ -372,7 +372,7 @@ int i915_gem_evict_vm(struct i915_address_space *vm)
         * switch otherwise is ineffective.
         */
        if (i915_is_ggtt(vm)) {
-               ret = ggtt_flush(vm->i915);
+               ret = ggtt_flush(vm->gt);
                if (ret)
                        return ret;
        }
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c 
b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 082fcf9085a6..1d26634ca597 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -38,6 +38,7 @@
 
 #include "display/intel_frontbuffer.h"
 #include "gt/intel_gt.h"
+#include "gt/intel_gt_requests.h"
 
 #include "i915_drv.h"
 #include "i915_scatterlist.h"
@@ -2529,8 +2530,8 @@ void i915_gem_gtt_finish_pages(struct drm_i915_gem_object 
*obj,
 
        if (unlikely(ggtt->do_idle_maps)) {
                /* XXX This does not prevent more requests being submitted! */
-               if (i915_retire_requests_timeout(dev_priv,
-                                                -MAX_SCHEDULE_TIMEOUT)) {
+               if (intel_gt_retire_requests_timeout(ggtt->vm.gt,
+                                                    -MAX_SCHEDULE_TIMEOUT)) {
                        DRM_ERROR("Failed to wait for idle; VT'd may hang.\n");
                        /* Wait a bit, in hopes it avoids the hang */
                        udelay(10);
diff --git a/drivers/gpu/drm/i915/i915_request.c 
b/drivers/gpu/drm/i915/i915_request.c
index 52f7c4e5b644..437f9fc6282e 100644
--- a/drivers/gpu/drm/i915/i915_request.c
+++ b/drivers/gpu/drm/i915/i915_request.c
@@ -216,7 +216,7 @@ static void remove_from_engine(struct i915_request *rq)
        spin_unlock(&locked->active.lock);
 }
 
-static bool i915_request_retire(struct i915_request *rq)
+bool i915_request_retire(struct i915_request *rq)
 {
        if (!i915_request_completed(rq))
                return false;
@@ -1508,68 +1508,6 @@ long i915_request_wait(struct i915_request *rq,
        return timeout;
 }
 
-long i915_retire_requests_timeout(struct drm_i915_private *i915, long timeout)
-{
-       struct intel_gt_timelines *timelines = &i915->gt.timelines;
-       struct intel_timeline *tl, *tn;
-       unsigned long active_count = 0;
-       unsigned long flags;
-       bool interruptible;
-       LIST_HEAD(free);
-
-       interruptible = true;
-       if (timeout < 0)
-               timeout = -timeout, interruptible = false;
-
-       spin_lock_irqsave(&timelines->lock, flags);
-       list_for_each_entry_safe(tl, tn, &timelines->active_list, link) {
-               if (!mutex_trylock(&tl->mutex))
-                       continue;
-
-               intel_timeline_get(tl);
-               GEM_BUG_ON(!tl->active_count);
-               tl->active_count++; /* pin the list element */
-               spin_unlock_irqrestore(&timelines->lock, flags);
-
-               if (timeout > 0) {
-                       struct dma_fence *fence;
-
-                       fence = i915_active_fence_get(&tl->last_request);
-                       if (fence) {
-                               timeout = dma_fence_wait_timeout(fence,
-                                                                interruptible,
-                                                                timeout);
-                               dma_fence_put(fence);
-                       }
-               }
-
-               retire_requests(tl);
-
-               spin_lock_irqsave(&timelines->lock, flags);
-
-               /* Resume iteration after dropping lock */
-               list_safe_reset_next(tl, tn, link);
-               if (--tl->active_count)
-                       active_count += 
!!rcu_access_pointer(tl->last_request.fence);
-               else
-                       list_del(&tl->link);
-
-               mutex_unlock(&tl->mutex);
-
-               /* Defer the final release to after the spinlock */
-               if (refcount_dec_and_test(&tl->kref.refcount)) {
-                       GEM_BUG_ON(tl->active_count);
-                       list_add(&tl->link, &free);
-               }
-       }
-       spin_unlock_irqrestore(&timelines->lock, flags);
-
-       list_for_each_entry_safe(tl, tn, &free, link)
-               __intel_timeline_free(&tl->kref);
-
-       return active_count ? timeout : 0;
-}
-
 #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
 #include "selftests/mock_request.c"
 #include "selftests/i915_request.c"
diff --git a/drivers/gpu/drm/i915/i915_request.h 
b/drivers/gpu/drm/i915/i915_request.h
index 256b0715180f..6a95242b280d 100644
--- a/drivers/gpu/drm/i915/i915_request.h
+++ b/drivers/gpu/drm/i915/i915_request.h
@@ -250,6 +250,7 @@ struct i915_request *__i915_request_commit(struct 
i915_request *request);
 void __i915_request_queue(struct i915_request *rq,
                          const struct i915_sched_attr *attr);
 
+bool i915_request_retire(struct i915_request *rq);
 void i915_request_retire_upto(struct i915_request *rq);
 
 static inline struct i915_request *
@@ -459,10 +460,4 @@ i915_request_active_timeline(struct i915_request *rq)
                                         
lockdep_is_held(&rq->engine->active.lock));
 }
 
-long i915_retire_requests_timeout(struct drm_i915_private *i915, long timeout);
-static inline void i915_retire_requests(struct drm_i915_private *i915)
-{
-       i915_retire_requests_timeout(i915, 0);
-}
-
 #endif /* I915_REQUEST_H */
diff --git a/drivers/gpu/drm/i915/selftests/igt_flush_test.c 
b/drivers/gpu/drm/i915/selftests/igt_flush_test.c
index ed496bd6d84f..7b0939e3f007 100644
--- a/drivers/gpu/drm/i915/selftests/igt_flush_test.c
+++ b/drivers/gpu/drm/i915/selftests/igt_flush_test.c
@@ -4,8 +4,8 @@
  * Copyright © 2018 Intel Corporation
  */
 
-#include "gem/i915_gem_context.h"
 #include "gt/intel_gt.h"
+#include "gt/intel_gt_requests.h"
 
 #include "i915_drv.h"
 #include "i915_selftest.h"
@@ -14,11 +14,12 @@
 
 int igt_flush_test(struct drm_i915_private *i915)
 {
-       int ret = intel_gt_is_wedged(&i915->gt) ? -EIO : 0;
+       struct intel_gt *gt = &i915->gt;
+       int ret = intel_gt_is_wedged(gt) ? -EIO : 0;
 
        cond_resched();
 
-       if (i915_gem_wait_for_idle(i915, HZ / 5) == -ETIME) {
+       if (intel_gt_wait_for_idle(gt, HZ / 5) == -ETIME) {
                pr_err("%pS timed out, cancelling all further testing.\n",
                       __builtin_return_address(0));
 
@@ -26,7 +27,7 @@ int igt_flush_test(struct drm_i915_private *i915)
                          __builtin_return_address(0));
                GEM_TRACE_DUMP();
 
-               intel_gt_set_wedged(&i915->gt);
+               intel_gt_set_wedged(gt);
                ret = -EIO;
        }
 
diff --git a/drivers/gpu/drm/i915/selftests/igt_live_test.c 
b/drivers/gpu/drm/i915/selftests/igt_live_test.c
index eae90f97df6c..810b60100c2c 100644
--- a/drivers/gpu/drm/i915/selftests/igt_live_test.c
+++ b/drivers/gpu/drm/i915/selftests/igt_live_test.c
@@ -4,7 +4,8 @@
  * Copyright © 2018 Intel Corporation
  */
 
-#include "../i915_drv.h"
+#include "i915_drv.h"
+#include "gt/intel_gt_requests.h"
 
 #include "../i915_selftest.h"
 #include "igt_flush_test.h"
@@ -23,7 +24,7 @@ int igt_live_test_begin(struct igt_live_test *t,
        t->func = func;
        t->name = name;
 
-       err = i915_gem_wait_for_idle(i915, MAX_SCHEDULE_TIMEOUT);
+       err = intel_gt_wait_for_idle(&i915->gt, MAX_SCHEDULE_TIMEOUT);
        if (err) {
                pr_err("%s(%s): failed to idle before, with err=%d!",
                       func, name, err);
diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c 
b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
index 3b589bbb2c2d..4e6cde0d4859 100644
--- a/drivers/gpu/drm/i915/selftests/mock_gem_device.c
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
@@ -26,6 +26,7 @@
 #include <linux/pm_runtime.h>
 
 #include "gt/intel_gt.h"
+#include "gt/intel_gt_requests.h"
 #include "gt/mock_engine.h"
 
 #include "mock_request.h"
@@ -44,7 +45,8 @@ void mock_device_flush(struct drm_i915_private *i915)
        do {
                for_each_engine(engine, i915, id)
                        mock_engine_flush(engine);
-       } while (i915_retire_requests_timeout(i915, MAX_SCHEDULE_TIMEOUT));
+       } while (intel_gt_retire_requests_timeout(&i915->gt,
+                                                 MAX_SCHEDULE_TIMEOUT));
 }
 
 static void mock_device_release(struct drm_device *dev)
@@ -98,10 +100,6 @@ static void release_dev(struct device *dev)
        kfree(pdev);
 }
 
-static void mock_retire_work_handler(struct work_struct *work)
-{
-}
-
 static int pm_domain_resume(struct device *dev)
 {
        return pm_generic_runtime_resume(dev);
@@ -181,8 +179,6 @@ struct drm_i915_private *mock_gem_device(void)
 
        mock_init_contexts(i915);
 
-       INIT_DELAYED_WORK(&i915->gem.retire_work, mock_retire_work_handler);
-
        intel_timelines_init(i915);
 
        mutex_lock(&i915->drm.struct_mutex);
-- 
2.23.0

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