+ }
if (unlikely(err))
vma->exec_flags = NULL;
}
@@ -698,7 +701,9 @@ static int eb_reserve(struct i915_execbuffer *eb)
case 1:
/* Too fragmented, unbind everything and retry */
+ mutex_lock(&eb->context->vm->mutex);
err = i915_gem_evict_vm(eb->context->vm);
+ mutex_unlock(&eb->context->vm->mutex);
if (err)
return err;
break;
@@ -972,7 +977,9 @@ static void reloc_cache_reset(struct reloc_cache *cache)
ggtt->vm.clear_range(&ggtt->vm,
cache->node.start,
cache->node.size);
+ mutex_lock(&ggtt->vm.mutex);
drm_mm_remove_node(&cache->node);
+ mutex_unlock(&ggtt->vm.mutex);
} else {
i915_vma_unpin((struct i915_vma *)cache->node.mm);
}
@@ -1047,11 +1054,13 @@ static void *reloc_iomap(struct drm_i915_gem_object *obj,
PIN_NOEVICT);
if (IS_ERR(vma)) {
memset(&cache->node, 0, sizeof(cache->node));
+ mutex_lock(&ggtt->vm.mutex);
err = drm_mm_insert_node_in_range
(&ggtt->vm.mm, &cache->node,
PAGE_SIZE, 0, I915_COLOR_UNEVICTABLE,
0, ggtt->mappable_end,
DRM_MM_INSERT_LOW);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) /* no inactive aperture space, use cpu reloc */
return NULL;
} else {
@@ -1416,7 +1425,7 @@ eb_relocate_entry(struct i915_execbuffer *eb,
if (reloc->write_domain == I915_GEM_DOMAIN_INSTRUCTION &&
IS_GEN(eb->i915, 6)) {
err = i915_vma_bind(target, target->obj->cache_level,
- PIN_GLOBAL);
+ PIN_GLOBAL, NULL);
if (WARN_ONCE(err,
"Unexpected failure to bind target VMA!"))
return err;
@@ -2140,35 +2149,6 @@ static struct i915_request *eb_throttle(struct intel_context *ce)
return i915_request_get(rq);
}
-static int
-__eb_pin_context(struct i915_execbuffer *eb, struct intel_context *ce)
-{
- int err;
-
- if (likely(atomic_inc_not_zero(&ce->pin_count)))
- return 0;
-
- err = mutex_lock_interruptible(&eb->i915->drm.struct_mutex);
- if (err)
- return err;
-
- err = __intel_context_do_pin(ce);
- mutex_unlock(&eb->i915->drm.struct_mutex);
-
- return err;
-}
-
-static void
-__eb_unpin_context(struct i915_execbuffer *eb, struct intel_context *ce)
-{
- if (likely(atomic_add_unless(&ce->pin_count, -1, 1)))
- return;
-
- mutex_lock(&eb->i915->drm.struct_mutex);
- intel_context_unpin(ce);
- mutex_unlock(&eb->i915->drm.struct_mutex);
-}
-
static int __eb_pin_engine(struct i915_execbuffer *eb, struct intel_context *ce)
{
struct intel_timeline *tl;
@@ -2188,7 +2168,7 @@ static int __eb_pin_engine(struct i915_execbuffer *eb, struct intel_context *ce)
* GGTT space, so do this first before we reserve a seqno for
* ourselves.
*/
- err = __eb_pin_context(eb, ce);
+ err = intel_context_pin(ce);
if (err)
return err;
@@ -2232,7 +2212,7 @@ static int __eb_pin_engine(struct i915_execbuffer *eb, struct intel_context *ce)
intel_context_exit(ce);
intel_context_timeline_unlock(tl);
err_unpin:
- __eb_unpin_context(eb, ce);
+ intel_context_unpin(ce);
return err;
}
@@ -2245,7 +2225,7 @@ static void eb_unpin_engine(struct i915_execbuffer *eb)
intel_context_exit(ce);
mutex_unlock(&tl->mutex);
- __eb_unpin_context(eb, ce);
+ intel_context_unpin(ce);
}
static unsigned int
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
index 82db2b783123..9a8c307c5aeb 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c
@@ -251,16 +251,6 @@ vm_fault_t i915_gem_fault(struct vm_fault *vmf)
goto err_rpm;
}
- ret = i915_mutex_lock_interruptible(dev);
- if (ret)
- goto err_reset;
-
- /* Access to snoopable pages through the GTT is incoherent. */
- if (obj->cache_level != I915_CACHE_NONE && !HAS_LLC(i915)) {
- ret = -EFAULT;
- goto err_unlock;
- }
-
/* Now pin it into the GTT as needed */
vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0,
PIN_MAPPABLE |
@@ -293,7 +283,13 @@ vm_fault_t i915_gem_fault(struct vm_fault *vmf)
}
if (IS_ERR(vma)) {
ret = PTR_ERR(vma);
- goto err_unlock;
+ goto err_reset;
+ }
+
+ /* Access to snoopable pages through the GTT is incoherent. */
+ if (obj->cache_level != I915_CACHE_NONE && !HAS_LLC(i915)) {
+ ret = -EFAULT;
+ goto err_unpin;
}
ret = i915_vma_pin_fence(vma);
@@ -321,14 +317,12 @@ vm_fault_t i915_gem_fault(struct vm_fault *vmf)
intel_wakeref_auto(&i915->ggtt.userfault_wakeref,
msecs_to_jiffies_timeout(CONFIG_DRM_I915_USERFAULT_AUTOSUSPEND));
- i915_vma_set_ggtt_write(vma);
-
+ if (write)
+ i915_vma_set_ggtt_write(vma);
err_fence:
i915_vma_unpin_fence(vma);
err_unpin:
__i915_vma_unpin(vma);
-err_unlock:
- mutex_unlock(&dev->struct_mutex);
err_reset:
intel_gt_reset_unlock(ggtt->vm.gt, srcu);
err_rpm:
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index 0ef60dae23a7..dbf9be9a79f4 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -155,21 +155,30 @@ static void __i915_gem_free_objects(struct drm_i915_private *i915,
wakeref = intel_runtime_pm_get(&i915->runtime_pm);
llist_for_each_entry_safe(obj, on, freed, freed) {
- struct i915_vma *vma, *vn;
-
trace_i915_gem_object_destroy(obj);
- mutex_lock(&i915->drm.struct_mutex);
-
- list_for_each_entry_safe(vma, vn, &obj->vma.list, obj_link) {
- GEM_BUG_ON(i915_vma_is_active(vma));
- atomic_and(~I915_VMA_PIN_MASK, &vma->flags);
- i915_vma_destroy(vma);
+ if (!list_empty(&obj->vma.list)) {
+ struct i915_vma *vma;
+
+ /*
+ * Note that the vma keeps an object reference while
+ * it is active, so it *should* not sleep while we
+ * destroy it. Our debug code errs insits it *might*.
+ * For the moment, play along.
+ */
+ spin_lock(&obj->vma.lock);
+ while ((vma = list_first_entry_or_null(&obj->vma.list,
+ struct i915_vma,
+ obj_link))) {
+ GEM_BUG_ON(vma->obj != obj);
+ spin_unlock(&obj->vma.lock);
+
+ i915_vma_destroy(vma);
+
+ spin_lock(&obj->vma.lock);
+ }
+ spin_unlock(&obj->vma.lock);
}
- GEM_BUG_ON(!list_empty(&obj->vma.list));
- GEM_BUG_ON(!RB_EMPTY_ROOT(&obj->vma.tree));
-
- mutex_unlock(&i915->drm.struct_mutex);
GEM_BUG_ON(atomic_read(&obj->bind_count));
GEM_BUG_ON(obj->userfault_count);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.h b/drivers/gpu/drm/i915/gem/i915_gem_object.h
index 29b9eddc4c7f..a78af25dce36 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.h
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.h
@@ -106,6 +106,11 @@ static inline void i915_gem_object_lock(struct drm_i915_gem_object *obj)
dma_resv_lock(obj->base.resv, NULL);
}
+static inline bool i915_gem_object_trylock(struct drm_i915_gem_object *obj)
+{
+ return dma_resv_trylock(obj->base.resv);
+}
+
static inline int
i915_gem_object_lock_interruptible(struct drm_i915_gem_object *obj)
{
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c b/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
index d2c05d752909..fd604ea12f7f 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_shrinker.c
@@ -16,40 +16,6 @@
#include "i915_trace.h"
-static bool shrinker_lock(struct drm_i915_private *i915,
- unsigned int flags,
- bool *unlock)
-{
- struct mutex *m = &i915->drm.struct_mutex;
-
- switch (mutex_trylock_recursive(m)) {
- case MUTEX_TRYLOCK_RECURSIVE:
- *unlock = false;
- return true;
-
- case MUTEX_TRYLOCK_FAILED:
- *unlock = false;
- if (flags & I915_SHRINK_ACTIVE &&
- mutex_lock_killable_nested(m, I915_MM_SHRINKER) == 0)
- *unlock = true;
- return *unlock;
-
- case MUTEX_TRYLOCK_SUCCESS:
- *unlock = true;
- return true;
- }
-
- BUG();
-}
-
-static void shrinker_unlock(struct drm_i915_private *i915, bool unlock)
-{
- if (!unlock)
- return;
-
- mutex_unlock(&i915->drm.struct_mutex);
-}
-
static bool swap_available(void)
{
return get_nr_swap_pages() > 0;
@@ -155,10 +121,6 @@ i915_gem_shrink(struct drm_i915_private *i915,
intel_wakeref_t wakeref = 0;
unsigned long count = 0;
unsigned long scanned = 0;
- bool unlock;
-
- if (!shrinker_lock(i915, shrink, &unlock))
- return 0;
/*
* When shrinking the active list, we should also consider active
@@ -268,8 +230,6 @@ i915_gem_shrink(struct drm_i915_private *i915,
if (shrink & I915_SHRINK_BOUND)
intel_runtime_pm_put(&i915->runtime_pm, wakeref);
- shrinker_unlock(i915, unlock);
-
if (nr_scanned)
*nr_scanned += scanned;
return count;
@@ -339,19 +299,14 @@ i915_gem_shrinker_scan(struct shrinker *shrinker, struct shrink_control *sc)
struct drm_i915_private *i915 =
container_of(shrinker, struct drm_i915_private, mm.shrinker);
unsigned long freed;
- bool unlock;
sc->nr_scanned = 0;
- if (!shrinker_lock(i915, 0, &unlock))
- return SHRINK_STOP;
-
freed = i915_gem_shrink(i915,
sc->nr_to_scan,
&sc->nr_scanned,
I915_SHRINK_BOUND |
- I915_SHRINK_UNBOUND |
- I915_SHRINK_WRITEBACK);
+ I915_SHRINK_UNBOUND);
if (sc->nr_scanned < sc->nr_to_scan && current_is_kswapd()) {
intel_wakeref_t wakeref;
@@ -366,8 +321,6 @@ i915_gem_shrinker_scan(struct shrinker *shrinker, struct shrink_control *sc)
}
}
- shrinker_unlock(i915, unlock);
-
return sc->nr_scanned ? freed : SHRINK_STOP;
}
@@ -384,6 +337,7 @@ i915_gem_shrinker_oom(struct notifier_block *nb, unsigned long event, void *ptr)
freed_pages = 0;
with_intel_runtime_pm(&i915->runtime_pm, wakeref)
freed_pages += i915_gem_shrink(i915, -1UL, NULL,
+ I915_SHRINK_ACTIVE |
I915_SHRINK_BOUND |
I915_SHRINK_UNBOUND |
I915_SHRINK_WRITEBACK);
@@ -419,10 +373,6 @@ i915_gem_shrinker_vmap(struct notifier_block *nb, unsigned long event, void *ptr
struct i915_vma *vma, *next;
unsigned long freed_pages = 0;
intel_wakeref_t wakeref;
- bool unlock;
-
- if (!shrinker_lock(i915, 0, &unlock))
- return NOTIFY_DONE;
with_intel_runtime_pm(&i915->runtime_pm, wakeref)
freed_pages += i915_gem_shrink(i915, -1UL, NULL,
@@ -439,15 +389,11 @@ i915_gem_shrinker_vmap(struct notifier_block *nb, unsigned long event, void *ptr
if (!vma->iomap || i915_vma_is_active(vma))
continue;
- mutex_unlock(&i915->ggtt.vm.mutex);
if (i915_vma_unbind(vma) == 0)
freed_pages += count;
- mutex_lock(&i915->ggtt.vm.mutex);
}
mutex_unlock(&i915->ggtt.vm.mutex);
- shrinker_unlock(i915, unlock);
-
*(unsigned long *)ptr += freed_pages;
return NOTIFY_DONE;
}
@@ -490,22 +436,9 @@ void i915_gem_shrinker_taints_mutex(struct drm_i915_private *i915,
fs_reclaim_acquire(GFP_KERNEL);
- /*
- * As we invariably rely on the struct_mutex within the shrinker,
- * but have a complicated recursion dance, taint all the mutexes used
- * within the shrinker with the struct_mutex. For completeness, we
- * taint with all subclass of struct_mutex, even though we should
- * only need tainting by I915_MM_NORMAL to catch possible ABBA
- * deadlocks from using struct_mutex inside @mutex.
- */
- mutex_acquire(&i915->drm.struct_mutex.dep_map,
- I915_MM_SHRINKER, 0, _RET_IP_);
-
mutex_acquire(&mutex->dep_map, 0, 0, _RET_IP_);
mutex_release(&mutex->dep_map, 0, _RET_IP_);
- mutex_release(&i915->drm.struct_mutex.dep_map, 0, _RET_IP_);
-
fs_reclaim_release(GFP_KERNEL);
if (unlock)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
index 0d81de1461b4..d2aed728ad8d 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
@@ -621,8 +621,6 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv
if (!drm_mm_initialized(&dev_priv->mm.stolen))
return NULL;
- lockdep_assert_held(&dev_priv->drm.struct_mutex);
-
DRM_DEBUG_DRIVER("creating preallocated stolen object: stolen_offset=%pa, gtt_offset=%pa, size=%pa\n",
&stolen_offset, >t_offset, &size);
@@ -674,21 +672,25 @@ i915_gem_object_create_stolen_for_preallocated(struct drm_i915_private *dev_priv
* setting up the GTT space. The actual reservation will occur
* later.
*/
+ mutex_lock(&ggtt->vm.mutex);
ret = i915_gem_gtt_reserve(&ggtt->vm, &vma->node,
size, gtt_offset, obj->cache_level,
0);
if (ret) {
DRM_DEBUG_DRIVER("failed to allocate stolen GTT space\n");
+ mutex_unlock(&ggtt->vm.mutex);
goto err_pages;
}
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
+ GEM_BUG_ON(vma->pages);
vma->pages = obj->mm.pages;
+ atomic_set(&vma->pages_count, I915_VMA_PAGES_ACTIVE);
+
set_bit(I915_VMA_GLOBAL_BIND_BIT, __i915_vma_flags(vma));
__i915_vma_set_map_and_fenceable(vma);
- mutex_lock(&ggtt->vm.mutex);
list_add_tail(&vma->vm_link, &ggtt->vm.bound_list);
mutex_unlock(&ggtt->vm.mutex);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_tiling.c b/drivers/gpu/drm/i915/gem/i915_gem_tiling.c
index ca0c2f451742..b9cfae0e4435 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_tiling.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_tiling.c
@@ -181,22 +181,25 @@ static int
i915_gem_object_fence_prepare(struct drm_i915_gem_object *obj,
int tiling_mode, unsigned int stride)
{
+ struct i915_ggtt *ggtt = &to_i915(obj->base.dev)->ggtt;
struct i915_vma *vma;
- int ret;
+ int ret = 0;
if (tiling_mode == I915_TILING_NONE)
return 0;
+ mutex_lock(&ggtt->vm.mutex);
for_each_ggtt_vma(vma, obj) {
if (i915_vma_fence_prepare(vma, tiling_mode, stride))
continue;
ret = i915_vma_unbind(vma);
if (ret)
- return ret;
+ break;
}
+ mutex_unlock(&ggtt->vm.mutex);
- return 0;
+ return ret;
}
int
@@ -212,7 +215,6 @@ i915_gem_object_set_tiling(struct drm_i915_gem_object *obj,
GEM_BUG_ON(!i915_tiling_ok(obj, tiling, stride));
GEM_BUG_ON(!stride ^ (tiling == I915_TILING_NONE));
- lockdep_assert_held(&i915->drm.struct_mutex);
if ((tiling | stride) == obj->tiling_and_stride)
return 0;
@@ -364,12 +366,7 @@ i915_gem_set_tiling_ioctl(struct drm_device *dev, void *data,
}
}
- err = mutex_lock_interruptible(&dev->struct_mutex);
- if (err)
- goto err;
-
err = i915_gem_object_set_tiling(obj, args->tiling_mode, args->stride);
- mutex_unlock(&dev->struct_mutex);
/* We have to maintain this existing ABI... */
args->stride = i915_gem_object_get_stride(obj);
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
index 74da35611d7c..cd36236e3faf 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c
@@ -92,7 +92,6 @@ userptr_mn_invalidate_range_start(struct mmu_notifier *_mn,
struct i915_mmu_notifier *mn =
container_of(_mn, struct i915_mmu_notifier, mn);
struct interval_tree_node *it;
- struct mutex *unlock = NULL;
unsigned long end;
int ret = 0;
@@ -129,33 +128,13 @@ userptr_mn_invalidate_range_start(struct mmu_notifier *_mn,
}
spin_unlock(&mn->lock);
- if (!unlock) {
- unlock = &mn->mm->i915->drm.struct_mutex;
-
- switch (mutex_trylock_recursive(unlock)) {
- default:
- case MUTEX_TRYLOCK_FAILED:
- if (mutex_lock_killable_nested(unlock, I915_MM_SHRINKER)) {
- i915_gem_object_put(obj);
- return -EINTR;
- }
- /* fall through */
- case MUTEX_TRYLOCK_SUCCESS:
- break;
-
- case MUTEX_TRYLOCK_RECURSIVE:
- unlock = ERR_PTR(-EEXIST);
- break;
- }
- }
-
ret = i915_gem_object_unbind(obj,
I915_GEM_OBJECT_UNBIND_ACTIVE);
if (ret == 0)
ret = __i915_gem_object_put_pages(obj, I915_MM_SHRINKER);
i915_gem_object_put(obj);
if (ret)
- goto unlock;
+ return ret;
spin_lock(&mn->lock);
@@ -168,10 +147,6 @@ userptr_mn_invalidate_range_start(struct mmu_notifier *_mn,
}
spin_unlock(&mn->lock);
-unlock:
- if (!IS_ERR_OR_NULL(unlock))
- mutex_unlock(unlock);
-
return ret;
}
diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
index c5cea4379216..cd771147b41f 100644
--- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
@@ -25,6 +25,17 @@ static const unsigned int page_sizes[] = {
I915_GTT_PAGE_SIZE_4K,
};
+static int unlocked_vma_unbind(struct i915_vma *vma)
+{
+ int ret;
+
+ mutex_lock(&vma->vm->mutex);
+ ret = i915_vma_unbind(vma);
+ mutex_unlock(&vma->vm->mutex);
+
+ return ret;
+}
+
static unsigned int get_largest_page_size(struct drm_i915_private *i915,
u64 rem)
{
@@ -333,7 +344,11 @@ static int igt_check_page_sizes(struct i915_vma *vma)
struct drm_i915_private *i915 = vma->vm->i915;
unsigned int supported = INTEL_INFO(i915)->page_sizes;
struct drm_i915_gem_object *obj = vma->obj;
- int err = 0;
+ int err;
+
+ err = i915_active_wait(&vma->active);
+ if (err)
+ return err;
if (!HAS_PAGE_SIZES(i915, vma->page_sizes.sg)) {
pr_err("unsupported page_sizes.sg=%u, supported=%u\n",
@@ -526,7 +541,7 @@ static int igt_mock_ppgtt_misaligned_dma(void *arg)
* pages.
*/
for (offset = 4096; offset < page_size; offset += 4096) {
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
if (err) {
i915_vma_close(vma);
goto out_unpin;
@@ -941,7 +956,7 @@ static int __igt_write_huge(struct intel_context *ce,
if (IS_ERR(vma))
return PTR_ERR(vma);
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
if (err)
goto out_vma_close;
@@ -1390,7 +1405,7 @@ static int igt_ppgtt_pin_update(void *arg)
goto out_unpin;
}
- err = i915_vma_bind(vma, I915_CACHE_NONE, PIN_UPDATE);
+ err = i915_vma_bind(vma, I915_CACHE_NONE, PIN_UPDATE, NULL);
if (err)
goto out_unpin;
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 da54a718c712..aa67c02ba98c 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_context.c
@@ -747,10 +747,7 @@ emit_rpcs_query(struct drm_i915_gem_object *obj,
if (err)
goto skip_request;
- i915_vma_unpin(batch);
- i915_vma_close(batch);
- i915_vma_put(batch);
-
+ i915_vma_unpin_and_release(&batch, 0);
i915_vma_unpin(vma);
*rq_out = i915_request_get(rq);
@@ -764,8 +761,7 @@ emit_rpcs_query(struct drm_i915_gem_object *obj,
err_request:
i915_request_add(rq);
err_batch:
- i915_vma_unpin(batch);
- i915_vma_put(batch);
+ i915_vma_unpin_and_release(&batch, 0);
err_vma:
i915_vma_unpin(vma);
@@ -1309,9 +1305,7 @@ static int write_to_scratch(struct i915_gem_context *ctx,
if (err)
goto skip_request;
- i915_vma_unpin(vma);
- i915_vma_close(vma);
- i915_vma_put(vma);
+ i915_vma_unpin_and_release(&vma, 0);
i915_request_add(rq);
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 1d27babff0ce..9c217dfe96a9 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -205,7 +205,6 @@ static int igt_partial_tiling(void *arg)
goto out;
}
- mutex_lock(&i915->drm.struct_mutex);
wakeref = intel_runtime_pm_get(&i915->runtime_pm);
if (1) {
@@ -318,7 +317,6 @@ next_tiling: ;
out_unlock:
intel_runtime_pm_put(&i915->runtime_pm, wakeref);
- mutex_unlock(&i915->drm.struct_mutex);
i915_gem_object_unpin_pages(obj);
out:
i915_gem_object_put(obj);
diff --git a/drivers/gpu/drm/i915/gem/selftests/igt_gem_utils.c b/drivers/gpu/drm/i915/gem/selftests/igt_gem_utils.c
index ee5dc13a30b3..6718da20f35d 100644
--- a/drivers/gpu/drm/i915/gem/selftests/igt_gem_utils.c
+++ b/drivers/gpu/drm/i915/gem/selftests/igt_gem_utils.c
@@ -154,9 +154,7 @@ int igt_gpu_fill_dw(struct intel_context *ce,
i915_request_add(rq);
- i915_vma_unpin(batch);
- i915_vma_close(batch);
- i915_vma_put(batch);
+ i915_vma_unpin_and_release(&batch, 0);
return 0;
@@ -165,7 +163,6 @@ int igt_gpu_fill_dw(struct intel_context *ce,
err_request:
i915_request_add(rq);
err_batch:
- i915_vma_unpin(batch);
- i915_vma_put(batch);
+ i915_vma_unpin_and_release(&batch, 0);
return err;
}
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index d48ec9a76ed1..c2afffb94474 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -207,11 +207,12 @@ void intel_gt_flush_ggtt_writes(struct intel_gt *gt)
with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
struct intel_uncore *uncore = gt->uncore;
+ unsigned long flags;
- spin_lock_irq(&uncore->lock);
+ spin_lock_irqsave(&uncore->lock, flags);
intel_uncore_posting_read_fw(uncore,
RING_HEAD(RENDER_RING_BASE));
- spin_unlock_irq(&uncore->lock);
+ spin_unlock_irqrestore(&uncore->lock, flags);
}
}
diff --git a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
index ac55a0d054bd..855e97ccaf9f 100644
--- a/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
+++ b/drivers/gpu/drm/i915/gt/intel_ringbuffer.c
@@ -1336,15 +1336,13 @@ void intel_ring_free(struct kref *ref)
{
struct intel_ring *ring = container_of(ref, typeof(*ring), ref);
- i915_vma_close(ring->vma);
i915_vma_put(ring->vma);
-
kfree(ring);
}
static void __ring_context_fini(struct intel_context *ce)
{
- i915_gem_object_put(ce->state->obj);
+ i915_vma_put(ce->state);
}
static void ring_context_destroy(struct kref *ref)
diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
index a0098fc35921..e53eea1050f8 100644
--- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
@@ -1127,15 +1127,14 @@ static int evict_vma(void *data)
{
struct evict_vma *arg = data;
struct i915_address_space *vm = arg->vma->vm;
- struct drm_i915_private *i915 = vm->i915;
struct drm_mm_node evict = arg->vma->node;
int err;
complete(&arg->completion);
- mutex_lock(&i915->drm.struct_mutex);
+ mutex_lock(&vm->mutex);
err = i915_gem_evict_for_node(vm, &evict, 0);
- mutex_unlock(&i915->drm.struct_mutex);
+ mutex_unlock(&vm->mutex);
return err;
}
@@ -1143,39 +1142,33 @@ static int evict_vma(void *data)
static int evict_fence(void *data)
{
struct evict_vma *arg = data;
- struct drm_i915_private *i915 = arg->vma->vm->i915;
int err;
complete(&arg->completion);
- mutex_lock(&i915->drm.struct_mutex);
-
/* Mark the fence register as dirty to force the mmio update. */
err = i915_gem_object_set_tiling(arg->vma->obj, I915_TILING_Y, 512);
if (err) {
pr_err("Invalid Y-tiling settings; err:%d\n", err);
- goto out_unlock;
+ return err;
}
err = i915_vma_pin(arg->vma, 0, 0, PIN_GLOBAL | PIN_MAPPABLE);
if (err) {
pr_err("Unable to pin vma for Y-tiled fence; err:%d\n", err);
- goto out_unlock;
+ return err;
}
err = i915_vma_pin_fence(arg->vma);
i915_vma_unpin(arg->vma);
if (err) {
pr_err("Unable to pin Y-tiled fence; err:%d\n", err);
- goto out_unlock;
+ return err;
}
i915_vma_unpin_fence(arg->vma);
-out_unlock:
- mutex_unlock(&i915->drm.struct_mutex);
-
- return err;
+ return 0;
}
static int __igt_reset_evict_vma(struct intel_gt *gt,
diff --git a/drivers/gpu/drm/i915/gvt/aperture_gm.c b/drivers/gpu/drm/i915/gvt/aperture_gm.c
index 5ff2437b2998..d996bbc7ea59 100644
--- a/drivers/gpu/drm/i915/gvt/aperture_gm.c
+++ b/drivers/gpu/drm/i915/gvt/aperture_gm.c
@@ -61,14 +61,14 @@ static int alloc_gm(struct intel_vgpu *vgpu, bool high_gm)
flags = PIN_MAPPABLE;
}
- mutex_lock(&dev_priv->drm.struct_mutex);
+ mutex_lock(&dev_priv->ggtt.vm.mutex);
mmio_hw_access_pre(dev_priv);
ret = i915_gem_gtt_insert(&dev_priv->ggtt.vm, node,
size, I915_GTT_PAGE_SIZE,
I915_COLOR_UNEVICTABLE,
start, end, flags);
mmio_hw_access_post(dev_priv);
- mutex_unlock(&dev_priv->drm.struct_mutex);
+ mutex_unlock(&dev_priv->ggtt.vm.mutex);
if (ret)
gvt_err("fail to alloc %s gm space from host\n",
high_gm ? "high" : "low");
@@ -98,9 +98,9 @@ static int alloc_vgpu_gm(struct intel_vgpu *vgpu)
return 0;
out_free_aperture:
- mutex_lock(&dev_priv->drm.struct_mutex);
+ mutex_lock(&dev_priv->ggtt.vm.mutex);
drm_mm_remove_node(&vgpu->gm.low_gm_node);
- mutex_unlock(&dev_priv->drm.struct_mutex);
+ mutex_unlock(&dev_priv->ggtt.vm.mutex);
return ret;
}
@@ -108,10 +108,10 @@ static void free_vgpu_gm(struct intel_vgpu *vgpu)
{
struct drm_i915_private *dev_priv = vgpu->gvt->dev_priv;
- mutex_lock(&dev_priv->drm.struct_mutex);
+ mutex_lock(&dev_priv->ggtt.vm.mutex);
drm_mm_remove_node(&vgpu->gm.low_gm_node);
drm_mm_remove_node(&vgpu->gm.high_gm_node);
- mutex_unlock(&dev_priv->drm.struct_mutex);
+ mutex_unlock(&dev_priv->ggtt.vm.mutex);
}
/**
diff --git a/drivers/gpu/drm/i915/i915_active.c b/drivers/gpu/drm/i915/i915_active.c
index 6a447f1d0110..6a37ed52957a 100644
--- a/drivers/gpu/drm/i915/i915_active.c
+++ b/drivers/gpu/drm/i915/i915_active.c
@@ -146,6 +146,7 @@ __active_retire(struct i915_active *ref)
if (!retire)
return;
+ GEM_BUG_ON(rcu_access_pointer(ref->excl));
rbtree_postorder_for_each_entry_safe(it, n, &root, node) {
GEM_BUG_ON(i915_active_request_isset(&it->base));
kmem_cache_free(global.slab_cache, it);
@@ -245,6 +246,8 @@ void __i915_active_init(struct drm_i915_private *i915,
ref->flags = 0;
ref->active = active;
ref->retire = retire;
+
+ ref->excl = NULL;
ref->tree = RB_ROOT;
ref->cache = NULL;
init_llist_head(&ref->preallocated_barriers);
@@ -341,6 +344,45 @@ int i915_active_ref(struct i915_active *ref,
return err;
}
+static void excl_cb(struct dma_fence *f, struct dma_fence_cb *cb)
+{
+ struct i915_active *ref = container_of(cb, typeof(*ref), excl_cb);
+
+ RCU_INIT_POINTER(ref->excl, NULL);
+ dma_fence_put(f);
+
+ active_retire(ref);
+}
+
+void i915_active_set_exclusive(struct i915_active *ref, struct dma_fence *f)
+{
+ GEM_BUG_ON(i915_active_is_idle(ref));
+
+ dma_fence_get(f);
+
+ rcu_read_lock();
+ if (rcu_access_pointer(ref->excl)) {
+ struct dma_fence *old;
+
+ old = dma_fence_get_rcu_safe(&ref->excl);
+ if (old) {
+ if (dma_fence_remove_callback(old, &ref->excl_cb))
+ atomic_dec(&ref->count);
+ dma_fence_put(old);
+ }
+ }
+ rcu_read_unlock();
+
+ atomic_inc(&ref->count);
+ rcu_assign_pointer(ref->excl, f);
+
+ if (dma_fence_add_callback(f, &ref->excl_cb, excl_cb)) {
+ RCU_INIT_POINTER(ref->excl, NULL);
+ atomic_dec(&ref->count);
+ dma_fence_put(f);
+
unsigned long flags;
#define I915_ACTIVE_GRAB_BIT 0
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 814f62fca727..3eed2efa8d13 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -62,20 +62,31 @@
#include "intel_pm.h"
static int
-insert_mappable_node(struct i915_ggtt *ggtt,
- struct drm_mm_node *node, u32 size)
+insert_mappable_node(struct i915_ggtt *ggtt, struct drm_mm_node *node, u32 size)
{
+ int err;
+
+ err = mutex_lock_interruptible(&ggtt->vm.mutex);
+ if (err)
+ return err;
+
memset(node, 0, sizeof(*node));
- return drm_mm_insert_node_in_range(&ggtt->vm.mm, node,
- size, 0, I915_COLOR_UNEVICTABLE,
- 0, ggtt->mappable_end,
- DRM_MM_INSERT_LOW);
+ err = drm_mm_insert_node_in_range(&ggtt->vm.mm, node,
+ size, 0, I915_COLOR_UNEVICTABLE,
+ 0, ggtt->mappable_end,
+ DRM_MM_INSERT_LOW);
+
+ mutex_unlock(&ggtt->vm.mutex);
+
+ return err;
}
static void
-remove_mappable_node(struct drm_mm_node *node)
+remove_mappable_node(struct i915_ggtt *ggtt, struct drm_mm_node *node)
{
+ mutex_lock(&ggtt->vm.mutex);
drm_mm_remove_node(node);
+ mutex_unlock(&ggtt->vm.mutex);
}
int
@@ -87,7 +98,8 @@ i915_gem_get_aperture_ioctl(struct drm_device *dev, void *data,
struct i915_vma *vma;
u64 pinned;
- mutex_lock(&ggtt->vm.mutex);
+ if (mutex_lock_interruptible(&ggtt->vm.mutex))
+ return -EINTR;
pinned = ggtt->vm.reserved;
list_for_each_entry(vma, &ggtt->vm.bound_list, vm_link)
@@ -109,20 +121,31 @@ int i915_gem_object_unbind(struct drm_i915_gem_object *obj,
LIST_HEAD(still_in_list);
int ret = 0;
- lockdep_assert_held(&obj->base.dev->struct_mutex);
-
spin_lock(&obj->vma.lock);
while (!ret && (vma = list_first_entry_or_null(&obj->vma.list,
struct i915_vma,
obj_link))) {
+ struct i915_address_space *vm = vma->vm;
+
+ ret = -EBUSY;
+ if (!i915_vm_tryopen(vm))
+ break;
+
list_move_tail(&vma->obj_link, &still_in_list);
spin_unlock(&obj->vma.lock);
- ret = -EBUSY;
if (flags & I915_GEM_OBJECT_UNBIND_ACTIVE ||
- !i915_vma_is_active(vma))
- ret = i915_vma_unbind(vma);
+ !i915_vma_is_active(vma)) {
+ struct i915_address_space *vm = vma->vm;
+
+ ret = mutex_lock_interruptible(&vm->mutex);
+ if (!ret) {
+ ret = i915_vma_unbind(vma);
+ mutex_unlock(&vm->mutex);
+ }
+ }
+ i915_vm_close(vm);
spin_lock(&obj->vma.lock);
}
list_splice(&still_in_list, &obj->vma.list);
@@ -338,10 +361,6 @@ i915_gem_gtt_pread(struct drm_i915_gem_object *obj,
u64 remain, offset;
int ret;
- ret = mutex_lock_interruptible(&i915->drm.struct_mutex);
- if (ret)
- return ret;
-
wakeref = intel_runtime_pm_get(&i915->runtime_pm);
vma = ERR_PTR(-ENODEV);
if (!i915_gem_object_is_tiled(obj))
@@ -355,12 +374,10 @@ i915_gem_gtt_pread(struct drm_i915_gem_object *obj,
} else {
ret = insert_mappable_node(ggtt, &node, PAGE_SIZE);
if (ret)
- goto out_unlock;
+ goto out_rpm;
GEM_BUG_ON(!drm_mm_node_allocated(&node));
}
- mutex_unlock(&i915->drm.struct_mutex);
-
ret = i915_gem_object_lock_interruptible(obj);
if (ret)
goto out_unpin;
@@ -414,17 +431,14 @@ i915_gem_gtt_pread(struct drm_i915_gem_object *obj,
i915_gem_object_unlock_fence(obj, fence);
out_unpin:
- mutex_lock(&i915->drm.struct_mutex);
if (drm_mm_node_allocated(&node)) {
ggtt->vm.clear_range(&ggtt->vm, node.start, node.size);
- remove_mappable_node(&node);
+ remove_mappable_node(ggtt, &node);
} else {
i915_vma_unpin(vma);
}
-out_unlock:
+out_rpm:
intel_runtime_pm_put(&i915->runtime_pm, wakeref);
- mutex_unlock(&i915->drm.struct_mutex);
-
return ret;
}
@@ -531,10 +545,6 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj,
void __user *user_data;
int ret;
- ret = mutex_lock_interruptible(&i915->drm.struct_mutex);
- if (ret)
- return ret;
-
if (i915_gem_object_has_struct_page(obj)) {
/*
* Avoid waking the device up if we can fallback, as
@@ -544,10 +554,8 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj,
* using the cache bypass of indirect GGTT access.
*/
wakeref = intel_runtime_pm_get_if_in_use(rpm);
- if (!wakeref) {
- ret = -EFAULT;
- goto out_unlock;
- }
+ if (!wakeref)
+ return -EFAULT;
} else {
/* No backing pages, no fallback, we must force GGTT access */
wakeref = intel_runtime_pm_get(rpm);
@@ -569,8 +577,6 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj,
GEM_BUG_ON(!drm_mm_node_allocated(&node));
}
- mutex_unlock(&i915->drm.struct_mutex);
-
ret = i915_gem_object_lock_interruptible(obj);
if (ret)
goto out_unpin;
@@ -634,18 +640,15 @@ i915_gem_gtt_pwrite_fast(struct drm_i915_gem_object *obj,
i915_gem_object_unlock_fence(obj, fence);
out_unpin:
- mutex_lock(&i915->drm.struct_mutex);
intel_gt_flush_ggtt_writes(ggtt->vm.gt);
if (drm_mm_node_allocated(&node)) {
ggtt->vm.clear_range(&ggtt->vm, node.start, node.size);
- remove_mappable_node(&node);
+ remove_mappable_node(ggtt, &node);
} else {
i915_vma_unpin(vma);
}
out_rpm:
intel_runtime_pm_put(rpm, wakeref);
-out_unlock:
- mutex_unlock(&i915->drm.struct_mutex);
return ret;
}
@@ -967,8 +970,6 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
struct i915_vma *vma;
int ret;
- lockdep_assert_held(&obj->base.dev->struct_mutex);
-
if (flags & PIN_MAPPABLE &&
(!view || view->type == I915_GGTT_VIEW_NORMAL)) {
/* If the required space is larger than the available
@@ -1015,14 +1016,9 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
return ERR_PTR(-ENOSPC);
}
- WARN(i915_vma_is_pinned(vma),
- "bo is already pinned in ggtt with incorrect alignment:"
- " offset=%08x, req.alignment=%llx,"
- " req.map_and_fenceable=%d, vma->map_and_fenceable=%d\n",
- i915_ggtt_offset(vma), alignment,
- !!(flags & PIN_MAPPABLE),
- i915_vma_is_map_and_fenceable(vma));
+ mutex_lock(&vma->vm->mutex);
ret = i915_vma_unbind(vma);
+ mutex_unlock(&vma->vm->mutex);
if (ret)
return ERR_PTR(ret);
}
@@ -1328,7 +1324,9 @@ static int __intel_engines_record_defaults(struct drm_i915_private *i915)
* from the GTT to prevent such accidents and reclaim the
* space.
*/
+ mutex_lock(&state->vm->mutex);
err = i915_vma_unbind(state);
+ mutex_unlock(&state->vm->mutex);
if (err)
goto out;
diff --git a/drivers/gpu/drm/i915/i915_gem_evict.c b/drivers/gpu/drm/i915/i915_gem_evict.c
index 7abcac3b5e2e..44f5b638fa43 100644
--- a/drivers/gpu/drm/i915/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/i915_gem_evict.c
@@ -47,8 +47,7 @@ static int ggtt_flush(struct drm_i915_private *i915)
* bound by their active reference.
*/
return i915_gem_wait_for_idle(i915,
- I915_WAIT_INTERRUPTIBLE |
- I915_WAIT_LOCKED,
+ I915_WAIT_INTERRUPTIBLE,
MAX_SCHEDULE_TIMEOUT);
}
@@ -104,7 +103,7 @@ i915_gem_evict_something(struct i915_address_space *vm,
struct i915_vma *active;
int ret;
- lockdep_assert_held(&vm->i915->drm.struct_mutex);
+ lockdep_assert_held(&vm->mutex);
trace_i915_gem_evict(vm, min_size, alignment, flags);
/*
@@ -127,15 +126,6 @@ i915_gem_evict_something(struct i915_address_space *vm,
min_size, alignment, cache_level,
start, end, mode);
- /*
- * Retire before we search the active list. Although we have
- * reasonable accuracy in our retirement lists, we may have
- * a stray pin (preventing eviction) that can only be resolved by
- * retiring.
- */
- if (!(flags & PIN_NONBLOCK))
- i915_retire_requests(dev_priv);
-
search_again:
active = NULL;
INIT_LIST_HEAD(&eviction_list);
@@ -269,7 +259,7 @@ int i915_gem_evict_for_node(struct i915_address_space *vm,
bool check_color;
int ret = 0;
- lockdep_assert_held(&vm->i915->drm.struct_mutex);
+ lockdep_assert_held(&vm->mutex);
GEM_BUG_ON(!IS_ALIGNED(start, I915_GTT_PAGE_SIZE));
GEM_BUG_ON(!IS_ALIGNED(end, I915_GTT_PAGE_SIZE));
@@ -375,7 +365,7 @@ int i915_gem_evict_vm(struct i915_address_space *vm)
struct i915_vma *vma, *next;
int ret;
- lockdep_assert_held(&vm->i915->drm.struct_mutex);
+ lockdep_assert_held(&vm->mutex);
trace_i915_gem_evict_vm(vm);
/* Switch back to the default context in order to unpin
@@ -390,7 +380,6 @@ int i915_gem_evict_vm(struct i915_address_space *vm)
}
INIT_LIST_HEAD(&eviction_list);
- mutex_lock(&vm->mutex);
list_for_each_entry(vma, &vm->bound_list, vm_link) {
if (i915_vma_is_pinned(vma))
continue;
@@ -398,7 +387,6 @@ int i915_gem_evict_vm(struct i915_address_space *vm)
__i915_vma_pin(vma);
list_add(&vma->evict_link, &eviction_list);
}
- mutex_unlock(&vm->mutex);
ret = 0;
list_for_each_entry_safe(vma, next, &eviction_list, evict_link) {
diff --git a/drivers/gpu/drm/i915/i915_gem_fence_reg.c b/drivers/gpu/drm/i915/i915_gem_fence_reg.c
index 615a9f4ef30c..414d839668d7 100644
--- a/drivers/gpu/drm/i915/i915_gem_fence_reg.c
+++ b/drivers/gpu/drm/i915/i915_gem_fence_reg.c
@@ -237,6 +237,7 @@ static int fence_update(struct i915_fence_reg *fence,
old = xchg(&fence->vma, NULL);
if (old) {
+ /* XXX Ideally we would move the waiting to outside the mutex */
ret = i915_active_wait(&old->active);
if (ret) {
fence->vma = old;
@@ -331,13 +332,15 @@ static struct i915_fence_reg *fence_find(struct drm_i915_private *i915)
return ERR_PTR(-EDEADLK);
}
-static int __i915_vma_pin_fence(struct i915_vma *vma)
+int __i915_vma_pin_fence(struct i915_vma *vma)
{
struct i915_ggtt *ggtt = i915_vm_to_ggtt(vma->vm);
struct i915_fence_reg *fence;
struct i915_vma *set = i915_gem_object_is_tiled(vma->obj) ? vma : NULL;
int err;
+ lockdep_assert_held(&vma->vm->mutex);
+
/* Just update our place in the LRU if our fence is getting reused. */
if (vma->fence) {
fence = vma->fence;
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 56d27cf09a3d..b2e4827788fc 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -150,16 +150,18 @@ static void gmch_ggtt_invalidate(struct i915_ggtt *ggtt)
static int ppgtt_bind_vma(struct i915_vma *vma,
enum i915_cache_level cache_level,
- u32 unused)
+ u32 flags)
{
u32 pte_flags;
int err;
- if (!i915_vma_is_bound(vma, I915_VMA_LOCAL_BIND)) {
+ if (flags & I915_VMA_ALLOC) {
err = vma->vm->allocate_va_range(vma->vm,
vma->node.start, vma->size);
if (err)
return err;
+
+ set_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma));
}
/* Applicable to VLV, and gen8+ */
@@ -167,6 +169,7 @@ static int ppgtt_bind_vma(struct i915_vma *vma,
if (i915_gem_object_is_readonly(vma->obj))
pte_flags |= PTE_READ_ONLY;
+ GEM_BUG_ON(!test_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma)));
vma->vm->insert_entries(vma->vm, vma, cache_level, pte_flags);
wmb();
@@ -175,7 +178,8 @@ static int ppgtt_bind_vma(struct i915_vma *vma,
static void ppgtt_unbind_vma(struct i915_vma *vma)
{
- vma->vm->clear_range(vma->vm, vma->node.start, vma->size);
+ if (test_and_clear_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma)))
+ vma->vm->clear_range(vma->vm, vma->node.start, vma->size);
}
static int ppgtt_set_pages(struct i915_vma *vma)
@@ -503,15 +507,25 @@ static void i915_address_space_fini(struct i915_address_space *vm)
mutex_destroy(&vm->mutex);
}
-static void ppgtt_destroy_vma(struct i915_address_space *vm)
+void __i915_vm_close(struct i915_address_space *vm)
{
struct i915_vma *vma, *vn;
- mutex_lock(&vm->i915->drm.struct_mutex);
- list_for_each_entry_safe(vma, vn, &vm->bound_list, vm_link)
+ mutex_lock(&vm->mutex);
+ list_for_each_entry_safe(vma, vn, &vm->bound_list, vm_link) {
+ struct drm_i915_gem_object *obj = vma->obj;
+
+ if (!kref_get_unless_zero(&obj->base.refcount))
+ continue;
+
+ atomic_and(~I915_VMA_PIN_MASK, &vma->flags);
+ WARN_ON(i915_vma_unbind(vma));
i915_vma_destroy(vma);
+
+ i915_gem_object_put(obj);
+ }
GEM_BUG_ON(!list_empty(&vm->bound_list));
- mutex_unlock(&vm->i915->drm.struct_mutex);
+ mutex_unlock(&vm->mutex);
}
static void __i915_vm_release(struct work_struct *work)
@@ -519,8 +533,6 @@ static void __i915_vm_release(struct work_struct *work)
struct i915_address_space *vm =
container_of(work, struct i915_address_space, rcu.work);
- ppgtt_destroy_vma(vm);
-
vm->cleanup(vm);
i915_address_space_fini(vm);
@@ -535,7 +547,6 @@ void i915_vm_release(struct kref *kref)
GEM_BUG_ON(i915_is_ggtt(vm));
trace_i915_ppgtt_release(vm);
- vm->closed = true;
queue_rcu_work(vm->i915->wq, &vm->rcu);
}
@@ -543,6 +554,7 @@ static void i915_address_space_init(struct i915_address_space *vm, int subclass)
{
kref_init(&vm->ref);
INIT_RCU_WORK(&vm->rcu, __i915_vm_release);
+ atomic_set(&vm->open, 1);
/*
* The vm->mutex must be reclaim safe (for use in the shrinker).
@@ -1769,12 +1781,8 @@ static void gen6_ppgtt_free_pd(struct gen6_ppgtt *ppgtt)
static void gen6_ppgtt_cleanup(struct i915_address_space *vm)
{
struct gen6_ppgtt *ppgtt = to_gen6_ppgtt(i915_vm_to_ppgtt(vm));
- struct drm_i915_private *i915 = vm->i915;
- /* FIXME remove the struct_mutex to bring the locking under control */
- mutex_lock(&i915->drm.struct_mutex);
i915_vma_destroy(ppgtt->vma);
- mutex_unlock(&i915->drm.struct_mutex);
gen6_ppgtt_free_pd(ppgtt);
free_scratch(vm);
@@ -1863,7 +1871,8 @@ static struct i915_vma *pd_vma_create(struct gen6_ppgtt *ppgtt, int size)
i915_active_init(i915, &vma->active, NULL, NULL);
- vma->vm = &ggtt->vm;
+ mutex_init(&vma->pages_mutex);
+ vma->vm = i915_vm_get(&ggtt->vm);
vma->ops = &pd_vma_ops;
vma->private = ppgtt;
@@ -1883,7 +1892,7 @@ int gen6_ppgtt_pin(struct i915_ppgtt *base)
struct gen6_ppgtt *ppgtt = to_gen6_ppgtt(base);
int err = 0;
- GEM_BUG_ON(ppgtt->base.vm.closed);
+ GEM_BUG_ON(!atomic_read(&ppgtt->base.vm.open));
/*
* Workaround the limited maximum vma->pin_count and the aliasing_ppgtt
@@ -2460,14 +2469,18 @@ static int aliasing_gtt_bind_vma(struct i915_vma *vma,
if (flags & I915_VMA_LOCAL_BIND) {
struct i915_ppgtt *alias = i915_vm_to_ggtt(vma->vm)->alias;
- if (!i915_vma_is_bound(vma, I915_VMA_LOCAL_BIND)) {
+ if (flags & I915_VMA_ALLOC) {
ret = alias->vm.allocate_va_range(&alias->vm,
vma->node.start,
vma->size);
if (ret)
return ret;
+
+ set_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma));
}
+ GEM_BUG_ON(!test_bit(I915_VMA_ALLOC_BIT,
+ __i915_vma_flags(vma)));
alias->vm.insert_entries(&alias->vm, vma,
cache_level, pte_flags);
}
@@ -2496,7 +2509,7 @@ static void aliasing_gtt_unbind_vma(struct i915_vma *vma)
vm->clear_range(vm, vma->node.start, vma->size);
}
- if (i915_vma_is_bound(vma, I915_VMA_LOCAL_BIND)) {
+ if (test_and_clear_bit(I915_VMA_ALLOC_BIT, __i915_vma_flags(vma))) {
struct i915_address_space *vm =
&i915_vm_to_ggtt(vma->vm)->alias->vm;
@@ -2599,22 +2612,16 @@ static int init_aliasing_ppgtt(struct i915_ggtt *ggtt)
static void fini_aliasing_ppgtt(struct i915_ggtt *ggtt)
{
- struct drm_i915_private *i915 = ggtt->vm.i915;
struct i915_ppgtt *ppgtt;
- mutex_lock(&i915->drm.struct_mutex);
-
ppgtt = fetch_and_zero(&ggtt->alias);
if (!ppgtt)
- goto out;
+ return;
i915_vm_put(&ppgtt->vm);
ggtt->vm.vma_ops.bind_vma = ggtt_bind_vma;
ggtt->vm.vma_ops.unbind_vma = ggtt_unbind_vma;
-
-out:
- mutex_unlock(&i915->drm.struct_mutex);
}
static int ggtt_reserve_guc_top(struct i915_ggtt *ggtt)
@@ -2731,15 +2738,14 @@ int i915_init_ggtt(struct drm_i915_private *i915)
static void ggtt_cleanup_hw(struct i915_ggtt *ggtt)
{
- struct drm_i915_private *i915 = ggtt->vm.i915;
struct i915_vma *vma, *vn;
- ggtt->vm.closed = true;
+ atomic_set(&ggtt->vm.open, 0);
rcu_barrier(); /* flush the RCU'ed__i915_vm_release */
- flush_workqueue(i915->wq);
+ flush_workqueue(ggtt->vm.i915->wq);
- mutex_lock(&i915->drm.struct_mutex);
+ mutex_lock(&ggtt->vm.mutex);
list_for_each_entry_safe(vma, vn, &ggtt->vm.bound_list, vm_link)
WARN_ON(i915_vma_unbind(vma));
@@ -2748,15 +2754,12 @@ static void ggtt_cleanup_hw(struct i915_ggtt *ggtt)
drm_mm_remove_node(&ggtt->error_capture);
ggtt_release_guc_top(ggtt);
-
- if (drm_mm_initialized(&ggtt->vm.mm)) {
- intel_vgt_deballoon(ggtt);
- i915_address_space_fini(&ggtt->vm);
- }
+ intel_vgt_deballoon(ggtt);
ggtt->vm.cleanup(&ggtt->vm);
- mutex_unlock(&i915->drm.struct_mutex);
+ mutex_unlock(&ggtt->vm.mutex);
+ i915_address_space_fini(&ggtt->vm);
arch_phys_wc_del(ggtt->mtrr);
io_mapping_fini(&ggtt->iomap);
@@ -3185,9 +3188,6 @@ int i915_ggtt_probe_hw(struct drm_i915_private *i915)
static int ggtt_init_hw(struct i915_ggtt *ggtt)
{
struct drm_i915_private *i915 = ggtt->vm.i915;
- int ret = 0;
-
- mutex_lock(&i915->drm.struct_mutex);
i915_address_space_init(&ggtt->vm, VM_CLASS_GGTT);
@@ -3203,18 +3203,14 @@ static int ggtt_init_hw(struct i915_ggtt *ggtt)
ggtt->gmadr.start,
ggtt->mappable_end)) {
ggtt->vm.cleanup(&ggtt->vm);
- ret = -EIO;
- goto out;
+ return -EIO;
}
ggtt->mtrr = arch_phys_wc_add(ggtt->gmadr.start, ggtt->mappable_end);
i915_ggtt_init_fences(ggtt);
-out:
- mutex_unlock(&i915->drm.struct_mutex);
-
- return ret;
+ return 0;
}
/**
@@ -3286,6 +3282,7 @@ static void ggtt_restore_mappings(struct i915_ggtt *ggtt)
{
struct i915_vma *vma, *vn;
bool flush = false;
+ int open;
intel_gt_check_and_clear_faults(ggtt->vm.gt);
@@ -3293,7 +3290,9 @@ static void ggtt_restore_mappings(struct i915_ggtt *ggtt)
/* First fill our portion of the GTT with scratch pages */
ggtt->vm.clear_range(&ggtt->vm, 0, ggtt->vm.total);
- ggtt->vm.closed = true; /* skip rewriting PTE on VMA unbind */
+
+ /* Skip rewriting PTE on VMA unbind. */
+ open = atomic_xchg(&ggtt->vm.open, 0);
/* clflush objects bound into the GGTT and rebind them. */
list_for_each_entry_safe(vma, vn, &ggtt->vm.bound_list, vm_link) {
@@ -3302,24 +3301,20 @@ static void ggtt_restore_mappings(struct i915_ggtt *ggtt)
if (!i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND))
continue;
- mutex_unlock(&ggtt->vm.mutex);
-
if (!i915_vma_unbind(vma))
- goto lock;
+ continue;
+ clear_bit(I915_VMA_GLOBAL_BIND_BIT, __i915_vma_flags(vma));
WARN_ON(i915_vma_bind(vma,
obj ? obj->cache_level : 0,
- PIN_UPDATE));
+ PIN_GLOBAL, NULL));
if (obj) { /* only used during resume => exclusive access */
flush |= fetch_and_zero(&obj->write_domain);
obj->read_domains |= I915_GEM_DOMAIN_GTT;
}
-
-lock:
- mutex_lock(&ggtt->vm.mutex);
}
- ggtt->vm.closed = false;
+ atomic_set(&ggtt->vm.open, open);
ggtt->invalidate(ggtt);
mutex_unlock(&ggtt->vm.mutex);
@@ -3711,7 +3706,8 @@ int i915_gem_gtt_insert(struct i915_address_space *vm,
u64 offset;
int err;
- lockdep_assert_held(&vm->i915->drm.struct_mutex);
+ lockdep_assert_held(&vm->mutex);
+
GEM_BUG_ON(!size);
GEM_BUG_ON(!IS_ALIGNED(size, I915_GTT_PAGE_SIZE));
GEM_BUG_ON(alignment && !is_power_of_2(alignment));
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.h b/drivers/gpu/drm/i915/i915_gem_gtt.h
index 007bdaf4ba00..e794d1f5eee8 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.h
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.h
@@ -307,7 +307,7 @@ struct i915_address_space {
unsigned int bind_alloc;
- bool closed;
+ atomic_t open;
struct mutex mutex; /* protects vma and our lists */
#define VM_CLASS_GGTT 0
@@ -575,6 +575,35 @@ static inline void i915_vm_put(struct i915_address_space *vm)
kref_put(&vm->ref, i915_vm_release);
}
+static inline struct i915_address_space *
+i915_vm_open(struct i915_address_space *vm)
+{
+ GEM_BUG_ON(!atomic_read(&vm->open));
+ atomic_inc(&vm->open);
+ return i915_vm_get(vm);
+}
+
+static inline bool
+i915_vm_tryopen(struct i915_address_space *vm)
+{
+ if (atomic_add_unless(&vm->open, 1, 0))
+ return i915_vm_get(vm);
+
+ return false;
+}
+
+void __i915_vm_close(struct i915_address_space *vm);
+
+static inline void
+i915_vm_close(struct i915_address_space *vm)
+{
+ GEM_BUG_ON(!atomic_read(&vm->open));
+ if (atomic_dec_and_test(&vm->open))
+ __i915_vm_close(vm);
+
+ i915_vm_put(vm);
+}
+
int gen6_ppgtt_pin(struct i915_ppgtt *base);
void gen6_ppgtt_unpin(struct i915_ppgtt *base);
void gen6_ppgtt_unpin_all(struct i915_ppgtt *base);
@@ -607,10 +636,9 @@ int i915_gem_gtt_insert(struct i915_address_space *vm,
#define PIN_OFFSET_BIAS BIT_ULL(6)
#define PIN_OFFSET_FIXED BIT_ULL(7)
-#define PIN_MBZ BIT_ULL(8) /* I915_VMA_PIN_OVERFLOW */
-#define PIN_GLOBAL BIT_ULL(9) /* I915_VMA_GLOBAL_BIND */
-#define PIN_USER BIT_ULL(10) /* I915_VMA_LOCAL_BIND */
-#define PIN_UPDATE BIT_ULL(11)
+#define PIN_UPDATE BIT_ULL(9)
+#define PIN_GLOBAL BIT_ULL(10) /* I915_VMA_GLOBAL_BIND */
+#define PIN_USER BIT_ULL(11) /* I915_VMA_LOCAL_BIND */
#define PIN_OFFSET_MASK (-I915_GTT_PAGE_SIZE)
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index c1b764233761..06633b4ad260 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -1204,15 +1204,10 @@ static int i915_oa_read(struct i915_perf_stream *stream,
static struct intel_context *oa_pin_context(struct i915_perf_stream *stream)
{
struct i915_gem_engines_iter it;
- struct drm_i915_private *i915 = stream->dev_priv;
struct i915_gem_context *ctx = stream->ctx;
struct intel_context *ce;
int err;
- err = i915_mutex_lock_interruptible(&i915->drm);
- if (err)
- return ERR_PTR(err);
-
for_each_gem_engine(ce, i915_gem_context_lock_engines(ctx), it) {
if (ce->engine->class != RENDER_CLASS)
continue;
@@ -1229,10 +1224,6 @@ static struct intel_context *oa_pin_context(struct i915_perf_stream *stream)
}
i915_gem_context_unlock_engines(ctx);
- mutex_unlock(&i915->drm.struct_mutex);
- if (err)
- return ERR_PTR(err);
-
return stream->pinned_ctx;
}
@@ -1331,32 +1322,22 @@ static int oa_get_render_ctx_id(struct i915_perf_stream *stream)
*/
static void oa_put_render_ctx_id(struct i915_perf_stream *stream)
{
- struct drm_i915_private *dev_priv = stream->dev_priv;
struct intel_context *ce;
stream->specific_ctx_id = INVALID_CTX_ID;
stream->specific_ctx_id_mask = 0;
ce = fetch_and_zero(&stream->pinned_ctx);
- if (ce) {
- mutex_lock(&dev_priv->drm.struct_mutex);
+ if (ce)
intel_context_unpin(ce);
- mutex_unlock(&dev_priv->drm.struct_mutex);
- }
}
static void
free_oa_buffer(struct i915_perf_stream *stream)
{
- struct drm_i915_private *i915 = stream->dev_priv;
-
- mutex_lock(&i915->drm.struct_mutex);
-
i915_vma_unpin_and_release(&stream->oa_buffer.vma,
I915_VMA_RELEASE_MAP);
- mutex_unlock(&i915->drm.struct_mutex);
-
stream->oa_buffer.vaddr = NULL;
}
@@ -1511,18 +1492,13 @@ static int alloc_oa_buffer(struct i915_perf_stream *stream)
if (WARN_ON(stream->oa_buffer.vma))
return -ENODEV;
- ret = i915_mutex_lock_interruptible(&dev_priv->drm);
- if (ret)
- return ret;
-
BUILD_BUG_ON_NOT_POWER_OF_2(OA_BUFFER_SIZE);
BUILD_BUG_ON(OA_BUFFER_SIZE < SZ_128K || OA_BUFFER_SIZE > SZ_16M);
bo = i915_gem_object_create_shmem(dev_priv, OA_BUFFER_SIZE);
if (IS_ERR(bo)) {
DRM_ERROR("Failed to allocate OA buffer\n");
- ret = PTR_ERR(bo);
- goto unlock;
+ return PTR_ERR(bo);
}
i915_gem_object_set_cache_coherency(bo, I915_CACHE_LLC);
@@ -1546,7 +1522,7 @@ static int alloc_oa_buffer(struct i915_perf_stream *stream)
i915_ggtt_offset(stream->oa_buffer.vma),
stream->oa_buffer.vaddr);
- goto unlock;
+ return 0;
err_unpin:
__i915_vma_unpin(vma);
@@ -1557,8 +1533,6 @@ static int alloc_oa_buffer(struct i915_perf_stream *stream)
stream->oa_buffer.vaddr = NULL;
stream->oa_buffer.vma = NULL;
-unlock:
- mutex_unlock(&dev_priv->drm.struct_mutex);
return ret;
}
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index 9adb85ba6daa..288679d8a6a9 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -32,6 +32,7 @@
#include "i915_drv.h"
#include "i915_globals.h"
+#include "i915_sw_fence_work.h"
#include "i915_trace.h"
#include "i915_vma.h"
@@ -110,7 +111,8 @@ vma_create(struct drm_i915_gem_object *obj,
if (vma == NULL)
return ERR_PTR(-ENOMEM);
- vma->vm = vm;
+ mutex_init(&vma->pages_mutex);
+ vma->vm = i915_vm_get(vm);
vma->ops = &vm->vma_ops;
vma->obj = obj;
vma->resv = obj->base.resv;
@@ -261,8 +263,6 @@ vma_lookup(struct drm_i915_gem_object *obj,
* Once created, the VMA is kept until either the object is freed, or the
* address space is closed.
*
- * Must be called with struct_mutex held.
- *
* Returns the vma, or an error pointer.
*/
struct i915_vma *
@@ -273,7 +273,7 @@ i915_vma_instance(struct drm_i915_gem_object *obj,
struct i915_vma *vma;
GEM_BUG_ON(view && !i915_is_ggtt(vm));
- GEM_BUG_ON(vm->closed);
+ GEM_BUG_ON(!atomic_read(&vm->open));
spin_lock(&obj->vma.lock);
vma = vma_lookup(obj, vm, view);
@@ -287,18 +287,63 @@ i915_vma_instance(struct drm_i915_gem_object *obj,
return vma;
}
+struct i915_vma_work {
+ struct dma_fence_work base;
+ struct i915_vma *vma;
+ enum i915_cache_level cache_level;
+ unsigned int flags;
+};
+
+static int __vma_bind(struct dma_fence_work *work)
+{
+ struct i915_vma_work *vw = container_of(work, typeof(*vw), base);
+ struct i915_vma *vma = vw->vma;
+ int err;
+
+ err = vma->ops->bind_vma(vma, vw->cache_level, vw->flags);
+ if (err)
+ atomic_or(I915_VMA_ERROR, &vma->flags);
+
+ if (vma->obj)
+ __i915_gem_object_unpin_pages(vma->obj);
+
+ return err;
+}
+
+static const struct dma_fence_work_ops bind_ops = {
+ .name = "bind",
+ .work = __vma_bind,
+};
+
+struct i915_vma_work *i915_vma_work(void)
+{
+ struct i915_vma_work *vw;
+
+ vw = kzalloc(sizeof(*vw), GFP_KERNEL);
+ if (!vw)
+ return NULL;
+
+ dma_fence_work_init(&vw->base, &bind_ops);
+ vw->base.dma.error = -EAGAIN; /* disable the worker by default */
+
+ return vw;
+}
+
/**
* i915_vma_bind - Sets up PTEs for an VMA in it's corresponding address space.
* @vma: VMA to map
* @cache_level: mapping cache level
* @flags: flags like global or local mapping
+ * @work: preallocated worker for allocating and binding the PTE
*
* DMA addresses are taken from the scatter-gather table of this object (or of
* this VMA in case of non-default GGTT views) and PTE entries set up.
* Note that DMA addresses are also the only part of the SG table we care about.
*/
-int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level,
- u32 flags)
+int i915_vma_bind(struct i915_vma *vma,
+ enum i915_cache_level cache_level,
+ u32 flags,
+ struct i915_vma_work *work)
{
u32 bind_flags;
u32 vma_flags;
@@ -315,11 +360,8 @@ int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level,
if (GEM_DEBUG_WARN_ON(!flags))
return -EINVAL;
- bind_flags = 0;
- if (flags & PIN_GLOBAL)
- bind_flags |= I915_VMA_GLOBAL_BIND;
- if (flags & PIN_USER)
- bind_flags |= I915_VMA_LOCAL_BIND;
+ bind_flags = flags;
+ bind_flags &= I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND;
vma_flags = atomic_read(&vma->flags);
vma_flags &= I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND;
@@ -333,9 +375,32 @@ int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level,
GEM_BUG_ON(!vma->pages);
trace_i915_vma_bind(vma, bind_flags);
- ret = vma->ops->bind_vma(vma, cache_level, bind_flags);
- if (ret)
- return ret;
+ if (work && (bind_flags & ~vma_flags) & vma->vm->bind_alloc) {
+ work->vma = vma;
+ work->cache_level = cache_level;
+ work->flags = bind_flags | I915_VMA_ALLOC;
+
+ /*
+ * Note we only want to chain up to the migration fence on
+ * the pages (not the object itself). As we don't track that,
+ * yet, we have to use the exclusive fence instead.
+ *
+ * Also note that we do not want to track the async vma as
+ * part of the obj->resv->excl_fence as it only affects
+ * execution and not content or object's backing store lifetime.
+ */
+ GEM_BUG_ON(i915_active_has_exclusive(&vma->active));
+ i915_active_set_exclusive(&vma->active, &work->base.dma);
+ work->base.dma.error = 0; /* enable the queue_work() */
+
+ if (vma->obj)
+ __i915_gem_object_pin_pages(vma->obj);
+ } else {
+ GEM_BUG_ON((bind_flags & ~vma_flags) & vma->vm->bind_alloc);
+ ret = vma->ops->bind_vma(vma, cache_level, bind_flags);
+ if (ret)
+ return ret;
+ }
atomic_or(bind_flags, &vma->flags);
return 0;
@@ -348,9 +413,7 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma)
/* Access through the GTT requires the device to be awake. */
assert_rpm_wakelock_held(&vma->vm->i915->runtime_pm);
-
- lockdep_assert_held(&vma->vm->i915->drm.struct_mutex);
- if (WARN_ON(!i915_vma_is_map_and_fenceable(vma))) {
+ if (GEM_WARN_ON(!i915_vma_is_map_and_fenceable(vma))) {
err = -ENODEV;
goto err;
}
@@ -368,7 +431,8 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma)
goto err;
}
- vma->iomap = ptr;
+ if (unlikely(cmpxchg(&vma->iomap, NULL, ptr)))
+ io_mapping_unmap(ptr);
}
__i915_vma_pin(vma);
@@ -388,18 +452,12 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma)
void i915_vma_flush_writes(struct i915_vma *vma)
{
- if (!i915_vma_has_ggtt_write(vma))
- return;
-
- intel_gt_flush_ggtt_writes(vma->vm->gt);
-
- i915_vma_unset_ggtt_write(vma);
+ if (i915_vma_unset_ggtt_write(vma))
+ intel_gt_flush_ggtt_writes(vma->vm->gt);
}
void i915_vma_unpin_iomap(struct i915_vma *vma)
{
- lockdep_assert_held(&vma->vm->i915->drm.struct_mutex);
-
GEM_BUG_ON(vma->iomap == NULL);
i915_vma_flush_writes(vma);
@@ -435,6 +493,9 @@ bool i915_vma_misplaced(const struct i915_vma *vma,
if (!drm_mm_node_allocated(&vma->node))
return false;
+ if (test_bit(I915_VMA_ERROR_BIT, __i915_vma_flags(vma)))
+ return true;
+
if (vma->node.size < size)
return true;
@@ -538,7 +599,6 @@ static void assert_bind_count(const struct drm_i915_gem_object *obj)
static int
i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
{
- struct drm_i915_private *dev_priv = vma->vm->i915;
unsigned int cache_level;
u64 start, end;
int ret;
@@ -564,7 +624,7 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
end = vma->vm->total;
if (flags & PIN_MAPPABLE)
- end = min_t(u64, end, dev_priv->ggtt.mappable_end);
+ end = min_t(u64, end, i915_vm_to_ggtt(vma->vm)->mappable_end);
if (flags & PIN_ZONE_4G)
end = min_t(u64, end, (1ULL << 32) - I915_GTT_PAGE_SIZE);
GEM_BUG_ON(!IS_ALIGNED(end, I915_GTT_PAGE_SIZE));
@@ -580,35 +640,21 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
return -ENOSPC;
}
- if (vma->obj) {
- ret = i915_gem_object_pin_pages(vma->obj);
- if (ret)
- return ret;
-
+ cache_level = 0;
+ if (vma->obj)
cache_level = vma->obj->cache_level;
- } else {
- cache_level = 0;
- }
-
- GEM_BUG_ON(vma->pages);
-
- ret = vma->ops->set_pages(vma);
- if (ret)
- goto err_unpin;
if (flags & PIN_OFFSET_FIXED) {
u64 offset = flags & PIN_OFFSET_MASK;
if (!IS_ALIGNED(offset, alignment) ||
- range_overflows(offset, size, end)) {
- ret = -EINVAL;
- goto err_clear;
- }
+ range_overflows(offset, size, end))
+ return -EINVAL;
ret = i915_gem_gtt_reserve(vma->vm, &vma->node,
size, offset, cache_level,
flags);
if (ret)
- goto err_clear;
+ return ret;
} else {
/*
* We only support huge gtt pages through the 48b PPGTT,
@@ -647,7 +693,7 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
size, alignment, cache_level,
start, end, flags);
if (ret)
- goto err_clear;
+ return ret;
GEM_BUG_ON(vma->node.start < start);
GEM_BUG_ON(vma->node.start + vma->node.size > end);
@@ -655,23 +701,15 @@ i915_vma_insert(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
GEM_BUG_ON(!i915_gem_valid_gtt_space(vma, cache_level));
- mutex_lock(&vma->vm->mutex);
list_add_tail(&vma->vm_link, &vma->vm->bound_list);
- mutex_unlock(&vma->vm->mutex);
if (vma->obj) {
+ atomic_inc(&vma->obj->mm.pages_pin_count);
atomic_inc(&vma->obj->bind_count);
assert_bind_count(vma->obj);
}
return 0;
-
-err_clear:
- vma->ops->clear_pages(vma);
-err_unpin:
- if (vma->obj)
- i915_gem_object_unpin_pages(vma->obj);
- return ret;
}
static void
@@ -680,12 +718,7 @@ i915_vma_remove(struct i915_vma *vma)
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
GEM_BUG_ON(i915_vma_is_bound(vma, I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND));
- vma->ops->clear_pages(vma);
-
- mutex_lock(&vma->vm->mutex);
- drm_mm_remove_node(&vma->node);
list_del(&vma->vm_link);
- mutex_unlock(&vma->vm->mutex);
/*
* Since the unbound list is global, only move to that list if
@@ -704,51 +737,206 @@ i915_vma_remove(struct i915_vma *vma)
i915_gem_object_unpin_pages(obj);
assert_bind_count(obj);
}
+
+ drm_mm_remove_node(&vma->node);
}
-int __i915_vma_do_pin(struct i915_vma *vma,
- u64 size, u64 alignment, u64 flags)
+static bool try_fast_pin(struct i915_vma *vma, unsigned int flags)
{
- const unsigned int bound = atomic_read(&vma->flags);
- int ret;
+ unsigned int bound;
+ bool pinned = true;
- lockdep_assert_held(&vma->vm->i915->drm.struct_mutex);
- GEM_BUG_ON((flags & (PIN_GLOBAL | PIN_USER)) == 0);
- GEM_BUG_ON((flags & PIN_GLOBAL) && !i915_vma_is_ggtt(vma));
+ bound = atomic_read(&vma->flags);
+ do {
+ if (unlikely(flags & ~bound))
+ return false;
- if (WARN_ON(bound & I915_VMA_PIN_OVERFLOW)) {
- ret = -EBUSY;
- goto err_unpin;
+ if (unlikely(bound & (I915_VMA_OVERFLOW | I915_VMA_ERROR)))
+ return false;
+
+ if (!(bound & I915_VMA_PIN_MASK))
+ goto slow;
+
+ GEM_BUG_ON(((bound + 1) & I915_VMA_PIN_MASK) == 0);
+ } while (!atomic_try_cmpxchg(&vma->flags, &bound, bound + 1));
+
+ return true;
+
+slow:
+ /*
+ * If pin_count==0, but we are bound, check under the lock to avoid
+ * racing with a concurrent i915_vma_unbind().
+ */
+ mutex_lock(&vma->vm->mutex);
+ do {
+ if (unlikely(bound & (I915_VMA_OVERFLOW | I915_VMA_ERROR))) {
+ pinned = false;
+ break;
+ }
+
+ if (unlikely(flags & ~bound)) {
+ pinned = false;
+ break;
+ }
+ } while (!atomic_try_cmpxchg(&vma->flags, &bound, bound + 1));
+ mutex_unlock(&vma->vm->mutex);
+
+ return pinned;
+}
+
+static int vma_get_pages(struct i915_vma *vma)
+{
+ int err = 0;
+
+ if (atomic_add_unless(&vma->pages_count, 1, 0))
+ return 0;
+
+ if (mutex_lock_interruptible(&vma->pages_mutex))
+ return -EINTR;
+
+ if (!atomic_read(&vma->pages_count)) {
+ if (vma->obj) {
+ err = i915_gem_object_pin_pages(vma->obj);
+ if (err)
+ goto unlock;
+ }
+
+ err = vma->ops->set_pages(vma);
+ if (err)
+ goto unlock;
}
+ atomic_inc(&vma->pages_count);
- if ((bound & I915_VMA_BIND_MASK) == 0) {
- ret = i915_vma_insert(vma, size, alignment, flags);
- if (ret)
- goto err_unpin;
+unlock:
+ mutex_unlock(&vma->pages_mutex);
+
+ return err;
+}
+
+static void __vma_put_pages(struct i915_vma *vma, unsigned int count)
+{
+ mutex_lock_nested(&vma->pages_mutex, SINGLE_DEPTH_NESTING);
+ GEM_BUG_ON(atomic_read(&vma->pages_count) < count);
+ if (atomic_sub_return(count, &vma->pages_count) == 0) {
+ vma->ops->clear_pages(vma);
+ GEM_BUG_ON(vma->pages);
+ if (vma->obj)
+ i915_gem_object_unpin_pages(vma->obj);
}
- GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
+ mutex_unlock(&vma->pages_mutex);
+}
- ret = i915_vma_bind(vma, vma->obj ? vma->obj->cache_level : 0, flags);
- if (ret)
- goto err_remove;
+static void vma_put_pages(struct i915_vma *vma)
+{
+ if (atomic_add_unless(&vma->pages_count, -1, 1))
+ return;
- GEM_BUG_ON(!i915_vma_is_bound(vma, I915_VMA_BIND_MASK));
+ __vma_put_pages(vma, 1);
+}
+
+static void vma_unbind_pages(struct i915_vma *vma)
+{
+ unsigned int count;
+
+ lockdep_assert_held(&vma->vm->mutex);
+
+ count = atomic_read(&vma->pages_count);
+ count >>= I915_VMA_PAGES_BIAS;
+ GEM_BUG_ON(!count);
+
+ __vma_put_pages(vma, count | count << I915_VMA_PAGES_BIAS);
+}
+
+int i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
+{
+ struct i915_vma_work *work = NULL;
+ unsigned int bound;
+ int err;
+
+ BUILD_BUG_ON(PIN_GLOBAL != I915_VMA_GLOBAL_BIND);
+ BUILD_BUG_ON(PIN_USER != I915_VMA_LOCAL_BIND);
+
+ GEM_BUG_ON(flags & PIN_UPDATE);
+ GEM_BUG_ON(!(flags & (PIN_USER | PIN_GLOBAL)));
- if ((bound ^ atomic_read(&vma->flags)) & I915_VMA_GLOBAL_BIND)
- __i915_vma_set_map_and_fenceable(vma);
+ if (try_fast_pin(vma, flags & I915_VMA_BIND_MASK))
+ return 0;
+
+ err = vma_get_pages(vma);
+ if (err)
+ return err;
+
+ if (flags & PIN_USER) {
+ work = i915_vma_work();
+ if (!work) {
+ err = -ENOMEM;
+ goto err_pages;
+ }
+ }
+
+ err = mutex_lock_interruptible(&vma->vm->mutex);
+ if (err)
+ goto err_fence;
+
+ bound = atomic_read(&vma->flags);
+ if (unlikely(bound & I915_VMA_ERROR)) {
+ err = -ENOMEM;
+ goto err_unlock;
+ }
+ if (unlikely(!((bound + 1) & I915_VMA_PIN_MASK))) {
+ err = -EAGAIN; /* pins are meant to be fairly temporary */
+ goto err_unlock;
+ }
+
+ if (unlikely(!(flags & ~bound & I915_VMA_BIND_MASK))) {
+ __i915_vma_pin(vma);
+ goto err_unlock;
+ }
+
+ err = i915_active_acquire(&vma->active);
+ if (err)
+ goto err_unlock;
+
+ if (!(bound & I915_VMA_BIND_MASK)) {
+ err = i915_vma_insert(vma, size, alignment, flags);
+ if (err)
+ goto err_active;
+
+ if (i915_is_ggtt(vma->vm))
+ __i915_vma_set_map_and_fenceable(vma);
+ }
+
+ GEM_BUG_ON(!vma->pages);
+ err = i915_vma_bind(vma,
+ vma->obj ? vma->obj->cache_level : 0,
+ flags, work);
+ if (err)
+ goto err_remove;
+
+ /* There should only be at most 2 active bindings (user, global) */
+ GEM_BUG_ON(bound + I915_VMA_PAGES_ACTIVE < bound);
+ atomic_add(I915_VMA_PAGES_ACTIVE, &vma->pages_count);
+ list_move_tail(&vma->vm_link, &vma->vm->bound_list);
+
+ __i915_vma_pin(vma);
+ GEM_BUG_ON(!i915_vma_is_pinned(vma));
+ GEM_BUG_ON(!i915_vma_is_bound(vma, flags));
GEM_BUG_ON(i915_vma_misplaced(vma, size, alignment, flags));
- return 0;
err_remove:
- if ((bound & I915_VMA_BIND_MASK) == 0) {
+ if (!i915_vma_is_bound(vma, I915_VMA_BIND_MASK))
i915_vma_remove(vma);
- GEM_BUG_ON(vma->pages);
- GEM_BUG_ON(atomic_read(&vma->flags) & I915_VMA_BIND_MASK);
- }
-err_unpin:
- __i915_vma_unpin(vma);
- return ret;
+err_active:
+ i915_active_release(&vma->active);
+err_unlock:
+ mutex_unlock(&vma->vm->mutex);
+err_fence:
+ if (work)
+ dma_fence_work_commit(&work->base);
+err_pages:
+ vma_put_pages(vma);
+ return err;
}
void i915_vma_close(struct i915_vma *vma)
@@ -779,9 +967,6 @@ static void __i915_vma_remove_closed(struct i915_vma *vma)
{
struct drm_i915_private *i915 = vma->vm->i915;
- if (!i915_vma_is_closed(vma))
- return;
-
spin_lock_irq(&i915->gt.closed_lock);
list_del_init(&vma->closed_link);
spin_unlock_irq(&i915->gt.closed_lock);
@@ -789,40 +974,35 @@ static void __i915_vma_remove_closed(struct i915_vma *vma)
void i915_vma_reopen(struct i915_vma *vma)
{
- __i915_vma_remove_closed(vma);
+ if (i915_vma_is_closed(vma))
+ __i915_vma_remove_closed(vma);
}
-static void __i915_vma_destroy(struct i915_vma *vma)
+void i915_vma_destroy(struct i915_vma *vma)
{
- GEM_BUG_ON(drm_mm_node_allocated(&vma->node));
- GEM_BUG_ON(vma->fence);
+ if (drm_mm_node_allocated(&vma->node)) {
+ mutex_lock(&vma->vm->mutex);
+ atomic_and(~I915_VMA_PIN_MASK, &vma->flags);
+ WARN_ON(i915_vma_unbind(vma));
+ mutex_unlock(&vma->vm->mutex);
+ GEM_BUG_ON(drm_mm_node_allocated(&vma->node));
+ }
+ GEM_BUG_ON(i915_vma_is_active(vma));
if (vma->obj) {
struct drm_i915_gem_object *obj = vma->obj;
spin_lock(&obj->vma.lock);
list_del(&vma->obj_link);
- rb_erase(&vma->obj_node, &vma->obj->vma.tree);
+ rb_erase(&vma->obj_node, &obj->vma.tree);
spin_unlock(&obj->vma.lock);
}
- i915_active_fini(&vma->active);
-
- i915_vma_free(vma);
-}
-
-void i915_vma_destroy(struct i915_vma *vma)
-{
- lockdep_assert_held(&vma->vm->i915->drm.struct_mutex);
-
- GEM_BUG_ON(i915_vma_is_pinned(vma));
-
__i915_vma_remove_closed(vma);
+ i915_vm_put(vma->vm);
- WARN_ON(i915_vma_unbind(vma));
- GEM_BUG_ON(i915_vma_is_active(vma));
-
- __i915_vma_destroy(vma);
+ i915_active_fini(&vma->active);
+ i915_vma_free(vma);
}
void i915_vma_parked(struct drm_i915_private *i915)
@@ -831,12 +1011,32 @@ void i915_vma_parked(struct drm_i915_private *i915)
spin_lock_irq(&i915->gt.closed_lock);
list_for_each_entry_safe(vma, next, &i915->gt.closed_vma, closed_link) {
- list_del_init(&vma->closed_link);
+ struct drm_i915_gem_object *obj = vma->obj;
+ struct i915_address_space *vm = vma->vm;
+
+ /* XXX All to avoid keeping a reference on i915_vma itself */
+
+ if (!kref_get_unless_zero(&obj->base.refcount))
+ continue;
+
+ if (!i915_vm_tryopen(vm)) {
+ i915_gem_object_put(obj);
+ obj = NULL;
+ }
+
spin_unlock_irq(&i915->gt.closed_lock);
- i915_vma_destroy(vma);
+ if (obj) {
+ i915_vma_destroy(vma);
+ i915_gem_object_put(obj);
+ }
+
+ i915_vm_close(vm);
+ /* Restart after dropping lock */
spin_lock_irq(&i915->gt.closed_lock);
+ next = list_first_entry(&i915->gt.closed_vma,
+ typeof(*next), closed_link);
}
spin_unlock_irq(&i915->gt.closed_lock);
}
@@ -887,6 +1087,10 @@ int i915_vma_move_to_active(struct i915_vma *vma,
assert_object_held(obj);
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
+ err = i915_request_await_active(rq, &vma->active);
+ if (err)
+ return err;
+
/*
* Add a reference if we're newly entering the active list.
* The order in which we add operations to the retirement queue is
@@ -927,34 +1131,19 @@ int i915_vma_unbind(struct i915_vma *vma)
{
int ret;
- lockdep_assert_held(&vma->vm->i915->drm.struct_mutex);
+ lockdep_assert_held(&vma->vm->mutex);
/*
* First wait upon any activity as retiring the request may
* have side-effects such as unpinning or even unbinding this vma.
+ *
+ * XXX Actually waiting under the vm->mutex is a hinderance and
+ * should be pipelined wherever possible. In cases where that is
+ * unavoidable, we should lift the wait to before the mutex.
*/
- might_sleep();
- if (i915_vma_is_active(vma)) {
- /*
- * When a closed VMA is retired, it is unbound - eek.
- * In order to prevent it from being recursively closed,
- * take a pin on the vma so that the second unbind is
- * aborted.
- *
- * Even more scary is that the retire callback may free
- * the object (last active vma). To prevent the explosion
- * we defer the actual object free to a worker that can
- * only proceed once it acquires the struct_mutex (which
- * we currently hold, therefore it cannot free this object
- * before we are finished).
- */
- __i915_vma_pin(vma);
- ret = i915_active_wait(&vma->active);
- __i915_vma_unpin(vma);
- if (ret)
- return ret;
- }
- GEM_BUG_ON(i915_vma_is_active(vma));
+ ret = i915_active_wait(&vma->active);
+ if (ret)
+ return ret;
if (i915_vma_is_pinned(vma)) {
vma_print_allocator(vma, "is pinned");
@@ -975,16 +1164,12 @@ int i915_vma_unbind(struct i915_vma *vma)
GEM_BUG_ON(i915_vma_has_ggtt_write(vma));
/* release the fence reg _after_ flushing */
- mutex_lock(&vma->vm->mutex);
ret = i915_vma_revoke_fence(vma);
- mutex_unlock(&vma->vm->mutex);
if (ret)
return ret;
/* Force a pagefault for domain tracking on next user access */
- mutex_lock(&vma->vm->mutex);
i915_vma_revoke_mmap(vma);
- mutex_unlock(&vma->vm->mutex);
__i915_vma_iounmap(vma);
clear_bit(I915_VMA_CAN_FENCE_BIT, __i915_vma_flags(vma));
@@ -992,12 +1177,13 @@ int i915_vma_unbind(struct i915_vma *vma)
GEM_BUG_ON(vma->fence);
GEM_BUG_ON(i915_vma_has_userfault(vma));
- if (likely(!vma->vm->closed)) {
+ if (likely(atomic_read(&vma->vm->open))) {
trace_i915_vma_unbind(vma);
vma->ops->unbind_vma(vma);
}
- atomic_and(~I915_VMA_BIND_MASK, &vma->flags);
+ atomic_and(~(I915_VMA_BIND_MASK | I915_VMA_ERROR), &vma->flags);
+ vma_unbind_pages(vma);
i915_vma_remove(vma);
return 0;
diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
index 6053ce1dc95c..a784dc879168 100644
--- a/drivers/gpu/drm/i915/i915_vma.h
+++ b/drivers/gpu/drm/i915/i915_vma.h
@@ -96,25 +96,28 @@ struct i915_vma {
* exclusive cachelines of a single page, so a maximum of 64 possible
* users.
*/
-#define I915_VMA_PIN_MASK 0xff
-#define I915_VMA_PIN_OVERFLOW_BIT 8
-#define I915_VMA_PIN_OVERFLOW ((int)BIT(I915_VMA_PIN_OVERFLOW_BIT))
+#define I915_VMA_PIN_MASK 0x3ff
+#define I915_VMA_OVERFLOW 0x200
/** Flags and address space this VMA is bound to */
-#define I915_VMA_GLOBAL_BIND_BIT 9
-#define I915_VMA_LOCAL_BIND_BIT 10
+#define I915_VMA_GLOBAL_BIND_BIT 10
+#define I915_VMA_LOCAL_BIND_BIT 11
#define I915_VMA_GLOBAL_BIND ((int)BIT(I915_VMA_GLOBAL_BIND_BIT))
#define I915_VMA_LOCAL_BIND ((int)BIT(I915_VMA_LOCAL_BIND_BIT))
-#define I915_VMA_BIND_MASK (I915_VMA_GLOBAL_BIND | \
- I915_VMA_LOCAL_BIND | \
- I915_VMA_PIN_OVERFLOW)
+#define I915_VMA_BIND_MASK (I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND)
-#define I915_VMA_GGTT_BIT 11
-#define I915_VMA_CAN_FENCE_BIT 12
-#define I915_VMA_USERFAULT_BIT 13
-#define I915_VMA_GGTT_WRITE_BIT 14
+#define I915_VMA_ALLOC_BIT 12
+#define I915_VMA_ALLOC ((int)BIT(I915_VMA_ALLOC_BIT))
+
+#define I915_VMA_ERROR_BIT 13
+#define I915_VMA_ERROR ((int)BIT(I915_VMA_ERROR_BIT))
+
+#define I915_VMA_GGTT_BIT 14
+#define I915_VMA_CAN_FENCE_BIT 15
+#define I915_VMA_USERFAULT_BIT 16
+#define I915_VMA_GGTT_WRITE_BIT 17
#define I915_VMA_GGTT ((int)BIT(I915_VMA_GGTT_BIT))
#define I915_VMA_CAN_FENCE ((int)BIT(I915_VMA_CAN_FENCE_BIT))
@@ -123,6 +126,11 @@ struct i915_vma {
struct i915_active active;
+#define I915_VMA_PAGES_BIAS 24
+#define I915_VMA_PAGES_ACTIVE (BIT(24) | 1)
+ atomic_t pages_count; /* number of active binds to the pages */
+ struct mutex pages_mutex; /* protect acquire/release of backing pages */
+
/**
* Support different GGTT views into the same object.
* This means there can be multiple VMA mappings per object and per VM.
@@ -307,8 +315,12 @@ i915_vma_compare(struct i915_vma *vma,
return memcmp(&vma->ggtt_view.partial, &view->partial, view->type);
}
-int i915_vma_bind(struct i915_vma *vma, enum i915_cache_level cache_level,
- u32 flags);
+struct i915_vma_work *i915_vma_work(void);
+int i915_vma_bind(struct i915_vma *vma,
+ enum i915_cache_level cache_level,
+ u32 flags,
+ struct i915_vma_work *work);
+
bool i915_gem_valid_gtt_space(struct i915_vma *vma, unsigned long cache_level);
bool i915_vma_misplaced(const struct i915_vma *vma,
u64 size, u64 alignment, u64 flags);
@@ -332,26 +344,8 @@ static inline void i915_vma_unlock(struct i915_vma *vma)
dma_resv_unlock(vma->resv);
}
-int __i915_vma_do_pin(struct i915_vma *vma,
- u64 size, u64 alignment, u64 flags);
-static inline int __must_check
-i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
-{
- BUILD_BUG_ON(PIN_MBZ != I915_VMA_PIN_OVERFLOW);
- BUILD_BUG_ON(PIN_GLOBAL != I915_VMA_GLOBAL_BIND);
- BUILD_BUG_ON(PIN_USER != I915_VMA_LOCAL_BIND);
-
- /* Pin early to prevent the shrinker/eviction logic from destroying
- * our vma as we insert and bind.
- */
- if (likely(((atomic_inc_return(&vma->flags) ^ flags) & I915_VMA_BIND_MASK) == 0)) {
- GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
- GEM_BUG_ON(i915_vma_misplaced(vma, size, alignment, flags));
- return 0;
- }
-
- return __i915_vma_do_pin(vma, size, alignment, flags);
-}
+int __must_check
+i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags);
static inline int i915_vma_pin_count(const struct i915_vma *vma)
{
@@ -366,17 +360,17 @@ static inline bool i915_vma_is_pinned(const struct i915_vma *vma)
static inline void __i915_vma_pin(struct i915_vma *vma)
{
atomic_inc(&vma->flags);
- GEM_BUG_ON(atomic_read(&vma->flags) & I915_VMA_PIN_OVERFLOW);
+ GEM_BUG_ON(!i915_vma_is_pinned(vma));
}
static inline void __i915_vma_unpin(struct i915_vma *vma)
{
+ GEM_BUG_ON(!i915_vma_is_pinned(vma));
atomic_dec(&vma->flags);
}
static inline void i915_vma_unpin(struct i915_vma *vma)
{
- GEM_BUG_ON(!i915_vma_is_pinned(vma));
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
__i915_vma_unpin(vma);
}
@@ -396,8 +390,6 @@ static inline bool i915_vma_is_bound(const struct i915_vma *vma,
* the caller must call i915_vma_unpin_iomap to relinquish the pinning
* after the iomapping is no longer required.
*
- * Callers must hold the struct_mutex.
- *
* Returns a valid iomapped pointer or ERR_PTR.
*/
void __iomem *i915_vma_pin_iomap(struct i915_vma *vma);
@@ -409,8 +401,8 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma);
*
* Unpins the previously iomapped VMA from i915_vma_pin_iomap().
*
- * Callers must hold the struct_mutex. This function is only valid to be
- * called on a VMA previously iomapped by the caller with i915_vma_pin_iomap().
+ * This function is only valid to be called on a VMA previously
+ * iomapped by the caller with i915_vma_pin_iomap().
*/
void i915_vma_unpin_iomap(struct i915_vma *vma);
@@ -438,6 +430,8 @@ static inline struct page *i915_vma_first_page(struct i915_vma *vma)
int __must_check i915_vma_pin_fence(struct i915_vma *vma);
int __must_check i915_vma_revoke_fence(struct i915_vma *vma);
+int __i915_vma_pin_fence(struct i915_vma *vma);
+
static inline void __i915_vma_unpin_fence(struct i915_vma *vma)
{
GEM_BUG_ON(atomic_read(&vma->fence->pin_count) <= 0);
@@ -455,7 +449,6 @@ static inline void __i915_vma_unpin_fence(struct i915_vma *vma)
static inline void
i915_vma_unpin_fence(struct i915_vma *vma)
{
- /* lockdep_assert_held(&vma->vm->i915->drm.struct_mutex); */
if (vma->fence)
__i915_vma_unpin_fence(vma);
}
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
index cb30c669b1b7..ba6064147173 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_evict.c
@@ -106,14 +106,11 @@ static int populate_ggtt(struct drm_i915_private *i915,
static void unpin_ggtt(struct drm_i915_private *i915)
{
- struct i915_ggtt *ggtt = &i915->ggtt;
struct i915_vma *vma;
- mutex_lock(&ggtt->vm.mutex);
list_for_each_entry(vma, &i915->ggtt.vm.bound_list, vm_link)
if (vma->obj->mm.quirked)
i915_vma_unpin(vma);
- mutex_unlock(&ggtt->vm.mutex);
}
static void cleanup_objects(struct drm_i915_private *i915,
@@ -127,11 +124,7 @@ static void cleanup_objects(struct drm_i915_private *i915,
i915_gem_object_put(obj);
}
- mutex_unlock(&i915->drm.struct_mutex);
-
i915_gem_drain_freed_objects(i915);
-
- mutex_lock(&i915->drm.struct_mutex);
}
static int igt_evict_something(void *arg)
@@ -148,10 +141,12 @@ static int igt_evict_something(void *arg)
goto cleanup;
/* Everything is pinned, nothing should happen */
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_evict_something(&ggtt->vm,
I915_GTT_PAGE_SIZE, 0, 0,
0, U64_MAX,
0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err != -ENOSPC) {
pr_err("i915_gem_evict_something failed on a full GGTT with err=%d\n",
err);
@@ -161,10 +156,12 @@ static int igt_evict_something(void *arg)
unpin_ggtt(i915);
/* Everything is unpinned, we should be able to evict something */
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_evict_something(&ggtt->vm,
I915_GTT_PAGE_SIZE, 0, 0,
0, U64_MAX,
0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("i915_gem_evict_something failed on a full GGTT with err=%d\n",
err);
@@ -230,7 +227,9 @@ static int igt_evict_for_vma(void *arg)
goto cleanup;
/* Everything is pinned, nothing should happen */
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_evict_for_node(&ggtt->vm, &target, 0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err != -ENOSPC) {
pr_err("i915_gem_evict_for_node on a full GGTT returned err=%d\n",
err);
@@ -240,7 +239,9 @@ static int igt_evict_for_vma(void *arg)
unpin_ggtt(i915);
/* Everything is unpinned, we should be able to evict the node */
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_evict_for_node(&ggtt->vm, &target, 0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("i915_gem_evict_for_node returned err=%d\n",
err);
@@ -317,7 +318,9 @@ static int igt_evict_for_cache_color(void *arg)
i915_vma_unpin(vma);
/* Remove just the second vma */
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_evict_for_node(&ggtt->vm, &target, 0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("[0]i915_gem_evict_for_node returned err=%d\n", err);
goto cleanup;
@@ -328,7 +331,9 @@ static int igt_evict_for_cache_color(void *arg)
*/
target.color = I915_CACHE_L3_LLC;
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_evict_for_node(&ggtt->vm, &target, 0);
+ mutex_unlock(&ggtt->vm.mutex);
if (!err) {
pr_err("[1]i915_gem_evict_for_node returned err=%d\n", err);
err = -EINVAL;
@@ -358,7 +363,9 @@ static int igt_evict_vm(void *arg)
goto cleanup;
/* Everything is pinned, nothing should happen */
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_evict_vm(&ggtt->vm);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("i915_gem_evict_vm on a full GGTT returned err=%d]\n",
err);
@@ -367,7 +374,9 @@ static int igt_evict_vm(void *arg)
unpin_ggtt(i915);
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_evict_vm(&ggtt->vm);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("i915_gem_evict_vm on a full GGTT returned err=%d]\n",
err);
@@ -408,11 +417,11 @@ static int igt_evict_contexts(void *arg)
if (!HAS_FULL_PPGTT(i915))
return 0;
- mutex_lock(&i915->drm.struct_mutex);
wakeref = intel_runtime_pm_get(&i915->runtime_pm);
/* Reserve a block so that we know we have enough to fit a few rq */
memset(&hole, 0, sizeof(hole));
+ mutex_lock(&i915->ggtt.vm.mutex);
err = i915_gem_gtt_insert(&i915->ggtt.vm, &hole,
PRETEND_GGTT_SIZE, 0, I915_COLOR_UNEVICTABLE,
0, i915->ggtt.vm.total,
@@ -425,7 +434,9 @@ static int igt_evict_contexts(void *arg)
do {
struct reserved *r;
+ mutex_unlock(&i915->ggtt.vm.mutex);
r = kcalloc(1, sizeof(*r), GFP_KERNEL);
+ mutex_lock(&i915->ggtt.vm.mutex);
if (!r) {
err = -ENOMEM;
goto out_locked;
@@ -445,7 +456,7 @@ static int igt_evict_contexts(void *arg)
count++;
} while (1);
drm_mm_remove_node(&hole);
- mutex_unlock(&i915->drm.struct_mutex);
+ mutex_unlock(&i915->ggtt.vm.mutex);
pr_info("Filled GGTT with %lu 1MiB nodes\n", count);
/* Overfill the GGTT with context objects and so try to evict one. */
@@ -508,7 +519,7 @@ static int igt_evict_contexts(void *arg)
break;
}
- mutex_lock(&i915->drm.struct_mutex);
+ mutex_lock(&i915->ggtt.vm.mutex);
out_locked:
if (igt_flush_test(i915, I915_WAIT_LOCKED))
err = -EIO;
@@ -522,8 +533,8 @@ static int igt_evict_contexts(void *arg)
}
if (drm_mm_node_allocated(&hole))
drm_mm_remove_node(&hole);
+ mutex_unlock(&i915->ggtt.vm.mutex);
intel_runtime_pm_put(&i915->runtime_pm, wakeref);
- mutex_unlock(&i915->drm.struct_mutex);
return err;
}
@@ -545,12 +556,9 @@ int i915_gem_evict_mock_selftests(void)
if (!i915)
return -ENOMEM;
- mutex_lock(&i915->drm.struct_mutex);
with_intel_runtime_pm(&i915->runtime_pm, wakeref)
err = i915_subtests(tests, i915);
- mutex_unlock(&i915->drm.struct_mutex);
-
drm_dev_put(&i915->drm);
return err;
}
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
index a90c9be95f8c..4235fa401956 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_gtt.c
@@ -35,16 +35,7 @@
static void cleanup_freed_objects(struct drm_i915_private *i915)
{
- /*
- * As we may hold onto the struct_mutex for inordinate lengths of
- * time, the NMI khungtaskd detector may fire for the free objects
- * worker.
- */
- mutex_unlock(&i915->drm.struct_mutex);
-
i915_gem_drain_freed_objects(i915);
-
- mutex_lock(&i915->drm.struct_mutex);
}
static void fake_free_pages(struct drm_i915_gem_object *obj,
@@ -318,6 +309,17 @@ static int lowlevel_hole(struct drm_i915_private *i915,
return 0;
}
+static int unlocked_vma_unbind(struct i915_vma *vma)
+{
+ int ret;
+
+ mutex_lock(&vma->vm->mutex);
+ ret = i915_vma_unbind(vma);
+ mutex_unlock(&vma->vm->mutex);
+
+ return ret;
+}
+
static void close_object_list(struct list_head *objects,
struct i915_address_space *vm)
{
@@ -329,7 +331,7 @@ static void close_object_list(struct list_head *objects,
vma = i915_vma_instance(obj, vm, NULL);
if (!IS_ERR(vma))
- ignored = i915_vma_unbind(vma);
+ ignored = unlocked_vma_unbind(vma);
/* Only ppgtt vma may be closed before the object is freed */
if (!IS_ERR(vma) && !i915_vma_is_ggtt(vma))
i915_vma_close(vma);
@@ -444,7 +446,7 @@ static int fill_hole(struct drm_i915_private *i915,
goto err;
}
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
if (err) {
pr_err("%s(%s) (forward) unbind of vma.node=%llx + %llx failed with err=%d\n",
__func__, p->name, vma->node.start, vma->node.size,
@@ -517,7 +519,7 @@ static int fill_hole(struct drm_i915_private *i915,
goto err;
}
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
if (err) {
pr_err("%s(%s) (backward) unbind of vma.node=%llx + %llx failed with err=%d\n",
__func__, p->name, vma->node.start, vma->node.size,
@@ -604,7 +606,7 @@ static int walk_hole(struct drm_i915_private *i915,
goto err_close;
}
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
if (err) {
pr_err("%s unbind failed at %llx + %llx with err=%d\n",
__func__, addr, vma->size, err);
@@ -685,13 +687,13 @@ static int pot_hole(struct drm_i915_private *i915,
pr_err("%s incorrect at %llx + %llx\n",
__func__, addr, vma->size);
i915_vma_unpin(vma);
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
err = -EINVAL;
goto err;
}
i915_vma_unpin(vma);
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
GEM_BUG_ON(err);
}
@@ -789,13 +791,13 @@ static int drunk_hole(struct drm_i915_private *i915,
pr_err("%s incorrect at %llx + %llx\n",
__func__, addr, BIT_ULL(size));
i915_vma_unpin(vma);
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
err = -EINVAL;
goto err;
}
i915_vma_unpin(vma);
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
GEM_BUG_ON(err);
if (igt_timeout(end_time,
@@ -867,7 +869,7 @@ static int __shrink_hole(struct drm_i915_private *i915,
pr_err("%s incorrect at %llx + %llx\n",
__func__, addr, size);
i915_vma_unpin(vma);
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
err = -EINVAL;
break;
}
@@ -875,6 +877,15 @@ static int __shrink_hole(struct drm_i915_private *i915,
i915_vma_unpin(vma);
addr += size;
+ /*
+ * Since we are injecting allocation faults at random intervals,
+ * wait for this allocation to complete before we change the
+ * faultinjection.
+ */
+ err = i915_active_wait(&vma->active);
+ if (err)
+ break;
+
if (igt_timeout(end_time,
"%s timed out at ofset %llx [%llx - %llx]\n",
__func__, addr, hole_start, hole_end)) {
@@ -1008,21 +1019,19 @@ static int exercise_ppgtt(struct drm_i915_private *dev_priv,
if (IS_ERR(file))
return PTR_ERR(file);
- mutex_lock(&dev_priv->drm.struct_mutex);
ppgtt = i915_ppgtt_create(dev_priv);
if (IS_ERR(ppgtt)) {
err = PTR_ERR(ppgtt);
- goto out_unlock;
+ goto out_free;
}
GEM_BUG_ON(offset_in_page(ppgtt->vm.total));
- GEM_BUG_ON(ppgtt->vm.closed);
+ GEM_BUG_ON(!atomic_read(&ppgtt->vm.open));
err = func(dev_priv, &ppgtt->vm, 0, ppgtt->vm.total, end_time);
i915_vm_put(&ppgtt->vm);
-out_unlock:
- mutex_unlock(&dev_priv->drm.struct_mutex);
+out_free:
mock_file_free(dev_priv, file);
return err;
}
@@ -1085,7 +1094,6 @@ static int exercise_ggtt(struct drm_i915_private *i915,
IGT_TIMEOUT(end_time);
int err = 0;
- mutex_lock(&i915->drm.struct_mutex);
restart:
list_sort(NULL, &ggtt->vm.mm.hole_stack, sort_holes);
drm_mm_for_each_hole(node, &ggtt->vm.mm, hole_start, hole_end) {
@@ -1106,7 +1114,6 @@ static int exercise_ggtt(struct drm_i915_private *i915,
last = hole_end;
goto restart;
}
- mutex_unlock(&i915->drm.struct_mutex);
return err;
}
@@ -1148,13 +1155,9 @@ static int igt_ggtt_page(void *arg)
unsigned int *order, n;
int err;
- mutex_lock(&i915->drm.struct_mutex);
-
obj = i915_gem_object_create_internal(i915, PAGE_SIZE);
- if (IS_ERR(obj)) {
- err = PTR_ERR(obj);
- goto out_unlock;
- }
+ if (IS_ERR(obj))
+ return PTR_ERR(obj);
err = i915_gem_object_pin_pages(obj);
if (err)
@@ -1222,8 +1225,6 @@ static int igt_ggtt_page(void *arg)
i915_gem_object_unpin_pages(obj);
out_free:
i915_gem_object_put(obj);
-out_unlock:
- mutex_unlock(&i915->drm.struct_mutex);
return err;
}
@@ -1234,6 +1235,9 @@ static void track_vma_bind(struct i915_vma *vma)
atomic_inc(&obj->bind_count); /* track for eviction later */
__i915_gem_object_pin_pages(obj);
+ GEM_BUG_ON(vma->pages);
+ atomic_set(&vma->pages_count, I915_VMA_PAGES_ACTIVE);
+ __i915_gem_object_pin_pages(obj);
vma->pages = obj->mm.pages;
mutex_lock(&vma->vm->mutex);
@@ -1330,11 +1334,13 @@ static int igt_gtt_reserve(void *arg)
goto out;
}
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_gtt_reserve(&ggtt->vm, &vma->node,
obj->base.size,
total,
obj->cache_level,
0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("i915_gem_gtt_reserve (pass 1) failed at %llu/%llu with err=%d\n",
total, ggtt->vm.total, err);
@@ -1380,11 +1386,13 @@ static int igt_gtt_reserve(void *arg)
goto out;
}
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_gtt_reserve(&ggtt->vm, &vma->node,
obj->base.size,
total,
obj->cache_level,
0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("i915_gem_gtt_reserve (pass 2) failed at %llu/%llu with err=%d\n",
total, ggtt->vm.total, err);
@@ -1414,7 +1422,7 @@ static int igt_gtt_reserve(void *arg)
goto out;
}
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
if (err) {
pr_err("i915_vma_unbind failed with err=%d!\n", err);
goto out;
@@ -1424,11 +1432,13 @@ static int igt_gtt_reserve(void *arg)
2*I915_GTT_PAGE_SIZE,
I915_GTT_MIN_ALIGNMENT);
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_gtt_reserve(&ggtt->vm, &vma->node,
obj->base.size,
offset,
obj->cache_level,
0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("i915_gem_gtt_reserve (pass 3) failed at %llu/%llu with err=%d\n",
total, ggtt->vm.total, err);
@@ -1497,11 +1507,13 @@ static int igt_gtt_insert(void *arg)
/* Check a couple of obviously invalid requests */
for (ii = invalid_insert; ii->size; ii++) {
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_gtt_insert(&ggtt->vm, &tmp,
ii->size, ii->alignment,
I915_COLOR_UNEVICTABLE,
ii->start, ii->end,
0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err != -ENOSPC) {
pr_err("Invalid i915_gem_gtt_insert(.size=%llx, .alignment=%llx, .start=%llx, .end=%llx) succeeded (err=%d)\n",
ii->size, ii->alignment, ii->start, ii->end,
@@ -1537,10 +1549,12 @@ static int igt_gtt_insert(void *arg)
goto out;
}
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_gtt_insert(&ggtt->vm, &vma->node,
obj->base.size, 0, obj->cache_level,
0, ggtt->vm.total,
0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err == -ENOSPC) {
/* maxed out the GGTT space */
i915_gem_object_put(obj);
@@ -1589,16 +1603,18 @@ static int igt_gtt_insert(void *arg)
GEM_BUG_ON(!drm_mm_node_allocated(&vma->node));
offset = vma->node.start;
- err = i915_vma_unbind(vma);
+ err = unlocked_vma_unbind(vma);
if (err) {
pr_err("i915_vma_unbind failed with err=%d!\n", err);
goto out;
}
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_gtt_insert(&ggtt->vm, &vma->node,
obj->base.size, 0, obj->cache_level,
0, ggtt->vm.total,
0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("i915_gem_gtt_insert (pass 2) failed at %llu/%llu with err=%d\n",
total, ggtt->vm.total, err);
@@ -1642,10 +1658,12 @@ static int igt_gtt_insert(void *arg)
goto out;
}
+ mutex_lock(&ggtt->vm.mutex);
err = i915_gem_gtt_insert(&ggtt->vm, &vma->node,
obj->base.size, 0, obj->cache_level,
0, ggtt->vm.total,
0);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("i915_gem_gtt_insert (pass 3) failed at %llu/%llu with err=%d\n",
total, ggtt->vm.total, err);
@@ -1689,8 +1707,9 @@ int i915_gem_gtt_mock_selftests(void)
}
mock_init_ggtt(i915, ggtt);
- mutex_lock(&i915->drm.struct_mutex);
err = i915_subtests(tests, ggtt);
+
+ mutex_lock(&i915->drm.struct_mutex);
mock_device_flush(i915);
mutex_unlock(&i915->drm.struct_mutex);
diff --git a/drivers/gpu/drm/i915/selftests/i915_vma.c b/drivers/gpu/drm/i915/selftests/i915_vma.c
index 97752deecccb..e0ca12c17a7f 100644
--- a/drivers/gpu/drm/i915/selftests/i915_vma.c
+++ b/drivers/gpu/drm/i915/selftests/i915_vma.c
@@ -337,7 +337,9 @@ static int igt_vma_pin1(void *arg)
if (!err) {
i915_vma_unpin(vma);
+ mutex_lock(&ggtt->vm.mutex);
err = i915_vma_unbind(vma);
+ mutex_unlock(&ggtt->vm.mutex);
if (err) {
pr_err("Failed to unbind single page from GGTT, err=%d\n", err);
goto out;
@@ -831,8 +833,9 @@ int i915_vma_mock_selftests(void)
}
mock_init_ggtt(i915, ggtt);
- mutex_lock(&i915->drm.struct_mutex);
err = i915_subtests(tests, ggtt);
+
+ mutex_lock(&i915->drm.struct_mutex);
mock_device_flush(i915);
mutex_unlock(&i915->drm.struct_mutex);
@@ -879,8 +882,6 @@ static int igt_vma_remapped_gtt(void *arg)
if (IS_ERR(obj))
return PTR_ERR(obj);
- mutex_lock(&i915->drm.struct_mutex);
-
wakeref = intel_runtime_pm_get(&i915->runtime_pm);
for (t = types; *t; t++) {
@@ -976,7 +977,6 @@ static int igt_vma_remapped_gtt(void *arg)
out:
intel_runtime_pm_put(&i915->runtime_pm, wakeref);
- mutex_unlock(&i915->drm.struct_mutex);
i915_gem_object_put(obj);
return err;
