summaryrefslogtreecommitdiff
path: root/linux-core
diff options
context:
space:
mode:
Diffstat (limited to 'linux-core')
-rw-r--r--linux-core/drm_bo.c34
-rw-r--r--linux-core/drm_fence.c389
-rw-r--r--linux-core/drm_objects.h75
-rw-r--r--linux-core/i915_drv.c13
-rw-r--r--linux-core/i915_fence.c246
-rw-r--r--linux-core/nouveau_buffer.c3
-rw-r--r--linux-core/nouveau_fence.c32
-rw-r--r--linux-core/via_fence.c114
-rw-r--r--linux-core/xgi_drv.c11
-rw-r--r--linux-core/xgi_fence.c55
10 files changed, 525 insertions, 447 deletions
diff --git a/linux-core/drm_bo.c b/linux-core/drm_bo.c
index df10e12b..3b180d15 100644
--- a/linux-core/drm_bo.c
+++ b/linux-core/drm_bo.c
@@ -287,7 +287,7 @@ int drm_bo_wait(struct drm_buffer_object *bo, int lazy, int ignore_signals,
DRM_ASSERT_LOCKED(&bo->mutex);
if (bo->fence) {
- if (drm_fence_object_signaled(bo->fence, bo->fence_type, 0)) {
+ if (drm_fence_object_signaled(bo->fence, bo->fence_type)) {
drm_fence_usage_deref_unlocked(&bo->fence);
return 0;
}
@@ -354,7 +354,7 @@ static void drm_bo_cleanup_refs(struct drm_buffer_object *bo, int remove_all)
DRM_FLAG_MASKED(bo->priv_flags, 0, _DRM_BO_FLAG_UNFENCED);
if (bo->fence && drm_fence_object_signaled(bo->fence,
- bo->fence_type, 0))
+ bo->fence_type))
drm_fence_usage_deref_unlocked(&bo->fence);
if (bo->fence && remove_all)
@@ -559,7 +559,7 @@ void drm_putback_buffer_objects(struct drm_device *dev)
list_del_init(&entry->lru);
DRM_FLAG_MASKED(entry->priv_flags, 0, _DRM_BO_FLAG_UNFENCED);
- DRM_WAKEUP(&entry->event_queue);
+ wake_up_all(&entry->event_queue);
/*
* FIXME: Might want to put back on head of list
@@ -660,7 +660,7 @@ int drm_fence_buffer_objects(struct drm_device *dev,
entry->fence_type = entry->new_fence_type;
DRM_FLAG_MASKED(entry->priv_flags, 0,
_DRM_BO_FLAG_UNFENCED);
- DRM_WAKEUP(&entry->event_queue);
+ wake_up_all(&entry->event_queue);
drm_bo_add_to_lru(entry);
}
mutex_unlock(&entry->mutex);
@@ -1032,7 +1032,7 @@ static int drm_bo_quick_busy(struct drm_buffer_object *bo)
BUG_ON(bo->priv_flags & _DRM_BO_FLAG_UNFENCED);
if (fence) {
- if (drm_fence_object_signaled(fence, bo->fence_type, 0)) {
+ if (drm_fence_object_signaled(fence, bo->fence_type)) {
drm_fence_usage_deref_unlocked(&bo->fence);
return 0;
}
@@ -1052,12 +1052,12 @@ static int drm_bo_busy(struct drm_buffer_object *bo)
BUG_ON(bo->priv_flags & _DRM_BO_FLAG_UNFENCED);
if (fence) {
- if (drm_fence_object_signaled(fence, bo->fence_type, 0)) {
+ if (drm_fence_object_signaled(fence, bo->fence_type)) {
drm_fence_usage_deref_unlocked(&bo->fence);
return 0;
}
drm_fence_object_flush(fence, DRM_FENCE_TYPE_EXE);
- if (drm_fence_object_signaled(fence, bo->fence_type, 0)) {
+ if (drm_fence_object_signaled(fence, bo->fence_type)) {
drm_fence_usage_deref_unlocked(&bo->fence);
return 0;
}
@@ -1249,7 +1249,7 @@ static int drm_buffer_object_map(struct drm_file *file_priv, uint32_t handle,
mutex_unlock(&dev->struct_mutex);
if (ret) {
if (atomic_add_negative(-1, &bo->mapped))
- DRM_WAKEUP(&bo->event_queue);
+ wake_up_all(&bo->event_queue);
} else
drm_bo_fill_rep_arg(bo, rep);
@@ -1306,7 +1306,7 @@ static void drm_buffer_user_object_unmap(struct drm_file *file_priv,
BUG_ON(action != _DRM_REF_TYPE1);
if (atomic_add_negative(-1, &bo->mapped))
- DRM_WAKEUP(&bo->event_queue);
+ wake_up_all(&bo->event_queue);
}
/*
@@ -1364,7 +1364,7 @@ out_unlock:
}
drm_bo_add_to_lru(bo);
if (bo->priv_flags & _DRM_BO_FLAG_UNFENCED) {
- DRM_WAKEUP(&bo->event_queue);
+ wake_up_all(&bo->event_queue);
DRM_FLAG_MASKED(bo->priv_flags, 0,
_DRM_BO_FLAG_UNFENCED);
}
@@ -1442,13 +1442,21 @@ static int drm_buffer_object_validate(struct drm_buffer_object *bo,
* We're switching command submission mechanism,
* or cannot simply rely on the hardware serializing for us.
*
- * Wait for buffer idle.
+ * Insert a driver-dependant barrier or wait for buffer idle.
*/
if ((fence_class != bo->fence_class) ||
((ftype ^ bo->fence_type) & bo->fence_type)) {
- ret = drm_bo_wait(bo, 0, 0, no_wait);
+ ret = -EINVAL;
+ if (driver->command_stream_barrier) {
+ ret = driver->command_stream_barrier(bo,
+ fence_class,
+ ftype,
+ no_wait);
+ }
+ if (ret)
+ ret = drm_bo_wait(bo, 0, 0, no_wait);
if (ret)
return ret;
@@ -1539,7 +1547,7 @@ static int drm_buffer_object_validate(struct drm_buffer_object *bo,
} else {
drm_bo_add_to_lru(bo);
if (bo->priv_flags & _DRM_BO_FLAG_UNFENCED) {
- DRM_WAKEUP(&bo->event_queue);
+ wake_up_all(&bo->event_queue);
DRM_FLAG_MASKED(bo->priv_flags, 0,
_DRM_BO_FLAG_UNFENCED);
}
diff --git a/linux-core/drm_fence.c b/linux-core/drm_fence.c
index 288b4db6..a852c63f 100644
--- a/linux-core/drm_fence.c
+++ b/linux-core/drm_fence.c
@@ -30,6 +30,57 @@
#include "drmP.h"
+
+/*
+ * Convenience function to be called by fence::wait methods that
+ * need polling.
+ */
+
+int drm_fence_wait_polling(struct drm_fence_object *fence, int lazy,
+ int interruptible, uint32_t mask,
+ unsigned long end_jiffies)
+{
+ struct drm_device *dev = fence->dev;
+ struct drm_fence_manager *fm = &dev->fm;
+ struct drm_fence_class_manager *fc = &fm->fence_class[fence->fence_class];
+ uint32_t count = 0;
+ int ret;
+
+ DECLARE_WAITQUEUE(entry, current);
+ add_wait_queue(&fc->fence_queue, &entry);
+
+ ret = 0;
+
+ for (;;) {
+ __set_current_state((interruptible) ?
+ TASK_INTERRUPTIBLE :
+ TASK_UNINTERRUPTIBLE);
+ if (drm_fence_object_signaled(fence, mask))
+ break;
+ if (time_after_eq(jiffies, end_jiffies)) {
+ ret = -EBUSY;
+ break;
+ }
+ if (lazy)
+ schedule_timeout(1);
+ else if ((++count & 0x0F) == 0){
+ __set_current_state(TASK_RUNNING);
+ schedule();
+ __set_current_state((interruptible) ?
+ TASK_INTERRUPTIBLE :
+ TASK_UNINTERRUPTIBLE);
+ }
+ if (interruptible && signal_pending(current)) {
+ ret = -EAGAIN;
+ break;
+ }
+ }
+ __set_current_state(TASK_RUNNING);
+ remove_wait_queue(&fc->fence_queue, &entry);
+ return ret;
+}
+EXPORT_SYMBOL(drm_fence_wait_polling);
+
/*
* Typically called by the IRQ handler.
*/
@@ -39,27 +90,14 @@ void drm_fence_handler(struct drm_device *dev, uint32_t fence_class,
{
int wake = 0;
uint32_t diff;
- uint32_t relevant;
+ uint32_t relevant_type;
+ uint32_t new_type;
struct drm_fence_manager *fm = &dev->fm;
struct drm_fence_class_manager *fc = &fm->fence_class[fence_class];
struct drm_fence_driver *driver = dev->driver->fence_driver;
struct list_head *head;
struct drm_fence_object *fence, *next;
int found = 0;
- int is_exe = (type & DRM_FENCE_TYPE_EXE);
- int ge_last_exe;
-
-
- diff = (sequence - fc->exe_flush_sequence) & driver->sequence_mask;
-
- if (fc->pending_exe_flush && is_exe && diff < driver->wrap_diff)
- fc->pending_exe_flush = 0;
-
- diff = (sequence - fc->last_exe_flush) & driver->sequence_mask;
- ge_last_exe = diff < driver->wrap_diff;
-
- if (is_exe && ge_last_exe)
- fc->last_exe_flush = sequence;
if (list_empty(&fc->ring))
return;
@@ -72,7 +110,7 @@ void drm_fence_handler(struct drm_device *dev, uint32_t fence_class,
}
}
- fc->pending_flush &= ~type;
+ fc->waiting_types &= ~type;
head = (found) ? &fence->ring : &fc->ring;
list_for_each_entry_safe_reverse(fence, next, head, ring) {
@@ -81,64 +119,60 @@ void drm_fence_handler(struct drm_device *dev, uint32_t fence_class,
if (error) {
fence->error = error;
- fence->signaled = fence->type;
- fence->submitted_flush = fence->type;
- fence->flush_mask = fence->type;
+ fence->signaled_types = fence->type;
list_del_init(&fence->ring);
wake = 1;
break;
}
- if (is_exe)
- type |= fence->native_type;
+ if (type & DRM_FENCE_TYPE_EXE)
+ type |= fence->native_types;
- relevant = type & fence->type;
+ relevant_type = type & fence->type;
+ new_type = (fence->signaled_types | relevant_type) &
+ ~fence->signaled_types;
- if ((fence->signaled | relevant) != fence->signaled) {
- fence->signaled |= relevant;
- fence->flush_mask |= relevant;
- fence->submitted_flush |= relevant;
+ if (new_type) {
+ fence->signaled_types |= new_type;
DRM_DEBUG("Fence 0x%08lx signaled 0x%08x\n",
- fence->base.hash.key, fence->signaled);
- wake = 1;
- }
+ fence->base.hash.key, fence->signaled_types);
+
+ if (driver->needed_flush)
+ fc->pending_flush |= driver->needed_flush(fence);
- relevant = fence->flush_mask &
- ~(fence->submitted_flush | fence->signaled);
+ if (new_type & fence->waiting_types)
+ wake = 1;
+ }
- fc->pending_flush |= relevant;
- fence->submitted_flush |= relevant;
+ fc->waiting_types |= fence->waiting_types & ~fence->signaled_types;
- if (!(fence->type & ~fence->signaled)) {
+ if (!(fence->type & ~fence->signaled_types)) {
DRM_DEBUG("Fence completely signaled 0x%08lx\n",
fence->base.hash.key);
list_del_init(&fence->ring);
}
-
}
/*
- * Reinstate lost flush flags.
+ * Reinstate lost waiting types.
*/
- if ((fc->pending_flush & type) != type) {
+ if ((fc->waiting_types & type) != type) {
head = head->prev;
list_for_each_entry(fence, head, ring) {
if (&fence->ring == &fc->ring)
break;
- diff = (fc->last_exe_flush - fence->sequence) &
+ diff = (fc->highest_waiting_sequence - fence->sequence) &
driver->sequence_mask;
if (diff > driver->wrap_diff)
break;
-
- relevant = fence->submitted_flush & ~fence->signaled;
- fc->pending_flush |= relevant;
+
+ fc->waiting_types |= fence->waiting_types & ~fence->signaled_types;
}
}
- if (wake) {
- DRM_WAKEUP(&fc->fence_queue);
- }
+ if (wake)
+ wake_up_all(&fc->fence_queue);
}
EXPORT_SYMBOL(drm_fence_handler);
@@ -219,41 +253,28 @@ static void drm_fence_object_destroy(struct drm_file *priv,
drm_fence_usage_deref_locked(&fence);
}
-int drm_fence_object_signaled(struct drm_fence_object *fence,
- uint32_t mask, int poke_flush)
+int drm_fence_object_signaled(struct drm_fence_object *fence, uint32_t mask)
{
unsigned long flags;
int signaled;
struct drm_device *dev = fence->dev;
struct drm_fence_manager *fm = &dev->fm;
struct drm_fence_driver *driver = dev->driver->fence_driver;
-
- if (poke_flush)
- driver->poke_flush(dev, fence->fence_class);
+
+ mask &= fence->type;
read_lock_irqsave(&fm->lock, flags);
- signaled =
- (fence->type & mask & fence->signaled) == (fence->type & mask);
+ signaled = (mask & fence->signaled_types) == mask;
read_unlock_irqrestore(&fm->lock, flags);
-
+ if (!signaled && driver->poll) {
+ write_lock_irqsave(&fm->lock, flags);
+ driver->poll(dev, fence->fence_class, mask);
+ signaled = (mask & fence->signaled_types) == mask;
+ write_unlock_irqrestore(&fm->lock, flags);
+ }
return signaled;
}
EXPORT_SYMBOL(drm_fence_object_signaled);
-static void drm_fence_flush_exe(struct drm_fence_class_manager *fc,
- struct drm_fence_driver *driver,
- uint32_t sequence)
-{
- uint32_t diff;
-
- if (!fc->pending_exe_flush) {
- fc->exe_flush_sequence = sequence;
- fc->pending_exe_flush = 1;
- } else {
- diff = (sequence - fc->exe_flush_sequence) & driver->sequence_mask;
- if (diff < driver->wrap_diff)
- fc->exe_flush_sequence = sequence;
- }
-}
int drm_fence_object_flush(struct drm_fence_object *fence,
uint32_t type)
@@ -262,7 +283,10 @@ int drm_fence_object_flush(struct drm_fence_object *fence,
struct drm_fence_manager *fm = &dev->fm;
struct drm_fence_class_manager *fc = &fm->fence_class[fence->fence_class];
struct drm_fence_driver *driver = dev->driver->fence_driver;
- unsigned long flags;
+ unsigned long irq_flags;
+ uint32_t saved_pending_flush;
+ uint32_t diff;
+ int call_flush;
if (type & ~fence->type) {
DRM_ERROR("Flush trying to extend fence type, "
@@ -270,24 +294,36 @@ int drm_fence_object_flush(struct drm_fence_object *fence,
return -EINVAL;
}
- write_lock_irqsave(&fm->lock, flags);
- fence->flush_mask |= type;
- if ((fence->submitted_flush & fence->signaled)
- == fence->submitted_flush) {
- if ((fence->type & DRM_FENCE_TYPE_EXE) &&
- !(fence->submitted_flush & DRM_FENCE_TYPE_EXE)) {
- drm_fence_flush_exe(fc, driver, fence->sequence);
- fence->submitted_flush |= DRM_FENCE_TYPE_EXE;
- } else {
- fc->pending_flush |= (fence->flush_mask &
- ~fence->submitted_flush);
- fence->submitted_flush = fence->flush_mask;
- }
- }
- write_unlock_irqrestore(&fm->lock, flags);
- driver->poke_flush(dev, fence->fence_class);
+ write_lock_irqsave(&fm->lock, irq_flags);
+ fence->waiting_types |= type;
+ fc->waiting_types |= fence->waiting_types;
+ diff = (fence->sequence - fc->highest_waiting_sequence) &
+ driver->sequence_mask;
+
+ if (diff < driver->wrap_diff)
+ fc->highest_waiting_sequence = fence->sequence;
+
+ /*
+ * fence->waiting_types has changed. Determine whether
+ * we need to initiate some kind of flush as a result of this.
+ */
+
+ saved_pending_flush = fc->pending_flush;
+ if (driver->needed_flush)
+ fc->pending_flush |= driver->needed_flush(fence);
+
+ if (driver->poll)
+ driver->poll(dev, fence->fence_class, fence->waiting_types);
+
+ call_flush = fc->pending_flush;
+ write_unlock_irqrestore(&fm->lock, irq_flags);
+
+ if (call_flush && driver->flush)
+ driver->flush(dev, fence->fence_class);
+
return 0;
}
+EXPORT_SYMBOL(drm_fence_object_flush);
/*
* Make sure old fence objects are signaled before their fence sequences are
@@ -299,90 +335,52 @@ void drm_fence_flush_old(struct drm_device *dev, uint32_t fence_class,
{
struct drm_fence_manager *fm = &dev->fm;
struct drm_fence_class_manager *fc = &fm->fence_class[fence_class];
- struct drm_fence_driver *driver = dev->driver->fence_driver;
- uint32_t old_sequence;
- unsigned long flags;
struct drm_fence_object *fence;
+ unsigned long irq_flags;
+ struct drm_fence_driver *driver = dev->driver->fence_driver;
+ int call_flush;
+
uint32_t diff;
- write_lock_irqsave(&fm->lock, flags);
- old_sequence = (sequence - driver->flush_diff) & driver->sequence_mask;
- diff = (old_sequence - fc->last_exe_flush) & driver->sequence_mask;
+ write_lock_irqsave(&fm->lock, irq_flags);
- if ((diff < driver->wrap_diff) && !fc->pending_exe_flush) {
- fc->pending_exe_flush = 1;
- fc->exe_flush_sequence = sequence - (driver->flush_diff / 2);
- }
- write_unlock_irqrestore(&fm->lock, flags);
+ list_for_each_entry_reverse(fence, &fc->ring, ring) {
+ diff = (sequence - fence->sequence) & driver->sequence_mask;
+ if (diff <= driver->flush_diff)
+ break;
+
+ fence->waiting_types = fence->type;
+ fc->waiting_types |= fence->type;
- mutex_lock(&dev->struct_mutex);
- read_lock_irqsave(&fm->lock, flags);
+ if (driver->needed_flush)
+ fc->pending_flush |= driver->needed_flush(fence);
+ }
+
+ if (driver->poll)
+ driver->poll(dev, fence_class, fc->waiting_types);
- if (list_empty(&fc->ring)) {
- read_unlock_irqrestore(&fm->lock, flags);
- mutex_unlock(&dev->struct_mutex);
- return;
- }
- fence = drm_fence_reference_locked(list_entry(fc->ring.next, struct drm_fence_object, ring));
- mutex_unlock(&dev->struct_mutex);
- diff = (old_sequence - fence->sequence) & driver->sequence_mask;
- read_unlock_irqrestore(&fm->lock, flags);
- if (diff < driver->wrap_diff)
- drm_fence_object_flush(fence, fence->type);
- drm_fence_usage_deref_unlocked(&fence);
-}
-EXPORT_SYMBOL(drm_fence_flush_old);
+ call_flush = fc->pending_flush;
+ write_unlock_irqrestore(&fm->lock, irq_flags);
-static int drm_fence_lazy_wait(struct drm_fence_object *fence,
- int ignore_signals,
- uint32_t mask)
-{
- struct drm_device *dev = fence->dev;
- struct drm_fence_manager *fm = &dev->fm;
- struct drm_fence_class_manager *fc = &fm->fence_class[fence->fence_class];
- int signaled;
- unsigned long _end = jiffies + 3*DRM_HZ;
- int ret = 0;
+ if (call_flush && driver->flush)
+ driver->flush(dev, fence->fence_class);
+
+ /*
+ * FIXME: Shold we implement a wait here for really old fences?
+ */
- do {
- DRM_WAIT_ON(ret, fc->fence_queue, 3 * DRM_HZ,
- (signaled = drm_fence_object_signaled(fence, mask, 1)));
- if (signaled)
- return 0;
- if (time_after_eq(jiffies, _end))
- break;
- } while (ret == -EINTR && ignore_signals);
- if (drm_fence_object_signaled(fence, mask, 0))
- return 0;
- if (time_after_eq(jiffies, _end))
- ret = -EBUSY;
- if (ret) {
- if (ret == -EBUSY) {
- DRM_ERROR("Fence timeout. "
- "GPU lockup or fence driver was "
- "taken down. %d 0x%08x 0x%02x 0x%02x 0x%02x\n",
- fence->fence_class,
- fence->sequence,
- fence->type,
- mask,
- fence->signaled);
- DRM_ERROR("Pending exe flush %d 0x%08x\n",
- fc->pending_exe_flush,
- fc->exe_flush_sequence);
- }
- return ((ret == -EINTR) ? -EAGAIN : ret);
- }
- return 0;
}
+EXPORT_SYMBOL(drm_fence_flush_old);
int drm_fence_object_wait(struct drm_fence_object *fence,
int lazy, int ignore_signals, uint32_t mask)
{
struct drm_device *dev = fence->dev;
struct drm_fence_driver *driver = dev->driver->fence_driver;
+ struct drm_fence_manager *fm = &dev->fm;
+ struct drm_fence_class_manager *fc = &fm->fence_class[fence->fence_class];
int ret = 0;
- unsigned long _end;
- int signaled;
+ unsigned long _end = 3 * DRM_HZ;
if (mask & ~fence->type) {
DRM_ERROR("Wait trying to extend fence type"
@@ -391,58 +389,39 @@ int drm_fence_object_wait(struct drm_fence_object *fence,
return -EINVAL;
}
- if (drm_fence_object_signaled(fence, mask, 0))
- return 0;
+ if (driver->wait)
+ return driver->wait(fence, lazy, !ignore_signals, mask);
- _end = jiffies + 3 * DRM_HZ;
drm_fence_object_flush(fence, mask);
+ if (driver->has_irq(dev, fence->fence_class, mask)) {
+ if (!ignore_signals)
+ ret = wait_event_interruptible_timeout
+ (fc->fence_queue,
+ drm_fence_object_signaled(fence, mask),
+ 3 * DRM_HZ);
+ else
+ ret = wait_event_timeout
+ (fc->fence_queue,
+ drm_fence_object_signaled(fence, mask),
+ 3 * DRM_HZ);
+
+ if (unlikely(ret == -ERESTARTSYS))
+ return -EAGAIN;
+
+ if (unlikely(ret == 0))
+ return -EBUSY;
- if (lazy && driver->lazy_capable) {
-
- ret = drm_fence_lazy_wait(fence, ignore_signals, mask);
- if (ret)
- return ret;
-
- } else {
-
- if (driver->has_irq(dev, fence->fence_class,
- DRM_FENCE_TYPE_EXE)) {
- ret = drm_fence_lazy_wait(fence, ignore_signals,
- DRM_FENCE_TYPE_EXE);
- if (ret)
- return ret;
- }
-
- if (driver->has_irq(dev, fence->fence_class,
- mask & ~DRM_FENCE_TYPE_EXE)) {
- ret = drm_fence_lazy_wait(fence, ignore_signals,
- mask);
- if (ret)
- return ret;
- }
- }
- if (drm_fence_object_signaled(fence, mask, 0))
return 0;
+ }
- /*
- * Avoid kernel-space busy-waits.
- */
- if (!ignore_signals)
- return -EAGAIN;
-
- do {
- schedule();
- signaled = drm_fence_object_signaled(fence, mask, 1);
- } while (!signaled && !time_after_eq(jiffies, _end));
-
- if (!signaled)
- return -EBUSY;
-
- return 0;
+ return drm_fence_wait_polling(fence, lazy, !ignore_signals, mask,
+ _end);
}
EXPORT_SYMBOL(drm_fence_object_wait);
+
+
int drm_fence_object_emit(struct drm_fence_object *fence, uint32_t fence_flags,
uint32_t fence_class, uint32_t type)
{
@@ -452,25 +431,24 @@ int drm_fence_object_emit(struct drm_fence_object *fence, uint32_t fence_flags,
struct drm_fence_class_manager *fc = &fm->fence_class[fence->fence_class];
unsigned long flags;
uint32_t sequence;
- uint32_t native_type;
+ uint32_t native_types;
int ret;
drm_fence_unring(dev, &fence->ring);
ret = driver->emit(dev, fence_class, fence_flags, &sequence,
- &native_type);
+ &native_types);
if (ret)
return ret;
write_lock_irqsave(&fm->lock, flags);
fence->fence_class = fence_class;
fence->type = type;
- fence->flush_mask = 0x00;
- fence->submitted_flush = 0x00;
- fence->signaled = 0x00;
+ fence->waiting_types = 0;
+ fence->signaled_types = 0;
fence->sequence = sequence;
- fence->native_type = native_type;
+ fence->native_types = native_types;
if (list_empty(&fc->ring))
- fc->last_exe_flush = sequence - 1;
+ fc->highest_waiting_sequence = sequence - 1;
list_add_tail(&fence->ring, &fc->ring);
write_unlock_irqrestore(&fm->lock, flags);
return 0;
@@ -500,9 +478,8 @@ static int drm_fence_object_init(struct drm_device *dev, uint32_t fence_class,
INIT_LIST_HEAD(&fence->base.list);
fence->fence_class = fence_class;
fence->type = type;
- fence->flush_mask = 0;
- fence->submitted_flush = 0;
- fence->signaled = 0;
+ fence->signaled_types = 0;
+ fence->waiting_types = 0;
fence->sequence = 0;
fence->dev = dev;
write_unlock_irqrestore(&fm->lock, flags);
@@ -598,7 +575,7 @@ void drm_fence_fill_arg(struct drm_fence_object *fence,
arg->handle = fence->base.hash.key;
arg->fence_class = fence->fence_class;
arg->type = fence->type;
- arg->signaled = fence->signaled;
+ arg->signaled = fence->signaled_types;
arg->error = fence->error;
arg->sequence = fence->sequence;
read_unlock_irqrestore(&fm->lock, irq_flags);
diff --git a/linux-core/drm_objects.h b/linux-core/drm_objects.h
index a2d10b5d..c35d900f 100644
--- a/linux-core/drm_objects.h
+++ b/linux-core/drm_objects.h
@@ -147,12 +147,11 @@ struct drm_fence_object {
struct list_head ring;
int fence_class;
- uint32_t native_type;
+ uint32_t native_types;
uint32_t type;
- uint32_t signaled;
+ uint32_t signaled_types;
uint32_t sequence;
- uint32_t flush_mask;
- uint32_t submitted_flush;
+ uint32_t waiting_types;
uint32_t error;
};
@@ -162,10 +161,9 @@ struct drm_fence_object {
struct drm_fence_class_manager {
struct list_head ring;
uint32_t pending_flush;
+ uint32_t waiting_types;
wait_queue_head_t fence_queue;
- int pending_exe_flush;
- uint32_t last_exe_flush;
- uint32_t exe_flush_sequence;
+ uint32_t highest_waiting_sequence;
};
struct drm_fence_manager {
@@ -177,19 +175,49 @@ struct drm_fence_manager {
};
struct drm_fence_driver {
+ unsigned long *waiting_jiffies;
uint32_t num_classes;
uint32_t wrap_diff;
uint32_t flush_diff;
uint32_t sequence_mask;
- int lazy_capable;
+
+ /*
+ * Driver implemented functions:
+ * has_irq() : 1 if the hardware can update the indicated type_flags using an
+ * irq handler. 0 if polling is required.
+ *
+ * emit() : Emit a sequence number to the command stream.
+ * Return the sequence number.
+ *
+ * flush() : Make sure the flags indicated in fc->pending_flush will eventually
+ * signal for fc->highest_received_sequence and all preceding sequences.
+ * Acknowledge by clearing the flags fc->pending_flush.
+ *
+ * poll() : Call drm_fence_handler with any new information.
+ *
+ * needed_flush() : Given the current state of the fence->type flags and previusly
+ * executed or queued flushes, return the type_flags that need flushing.
+ *
+ * wait(): Wait for the "mask" flags to signal on a given fence, performing
+ * whatever's necessary to make this happen.
+ */
+
int (*has_irq) (struct drm_device *dev, uint32_t fence_class,
uint32_t flags);
int (*emit) (struct drm_device *dev, uint32_t fence_class,
uint32_t flags, uint32_t *breadcrumb,
uint32_t *native_type);
- void (*poke_flush) (struct drm_device *dev, uint32_t fence_class);
+ void (*flush) (struct drm_device *dev, uint32_t fence_class);
+ void (*poll) (struct drm_device *dev, uint32_t fence_class,
+ uint32_t types);
+ uint32_t (*needed_flush) (struct drm_fence_object *fence);
+ int (*wait) (struct drm_fence_object *fence, int lazy,
+ int interruptible, uint32_t mask);
};
+extern int drm_fence_wait_polling(struct drm_fence_object *fence, int lazy,
+ int interruptible, uint32_t mask,
+ unsigned long end_jiffies);
extern void drm_fence_handler(struct drm_device *dev, uint32_t fence_class,
uint32_t sequence, uint32_t type,
uint32_t error);
@@ -200,7 +228,7 @@ extern void drm_fence_flush_old(struct drm_device *dev, uint32_t fence_class,
extern int drm_fence_object_flush(struct drm_fence_object *fence,
uint32_t type);
extern int drm_fence_object_signaled(struct drm_fence_object *fence,
- uint32_t type, int flush);
+ uint32_t type);
extern void drm_fence_usage_deref_locked(struct drm_fence_object **fence);
extern void drm_fence_usage_deref_unlocked(struct drm_fence_object **fence);
extern struct drm_fence_object *drm_fence_reference_locked(struct drm_fence_object *src);
@@ -576,6 +604,33 @@ struct drm_bo_driver {
* ttm_cache_flush
*/
void (*ttm_cache_flush)(struct drm_ttm *ttm);
+
+ /*
+ * command_stream_barrier
+ *
+ * @dev: The drm device.
+ *
+ * @bo: The buffer object to validate.
+ *
+ * @new_fence_class: The new fence class for the buffer object.
+ *
+ * @new_fence_type: The new fence type for the buffer object.
+ *
+ * @no_wait: whether this should give up and return -EBUSY
+ * if this operation would require sleeping
+ *
+ * Insert a command stream barrier that makes sure that the
+ * buffer is idle once the commands associated with the
+ * current validation are starting to execute. If an error
+ * condition is returned, or the function pointer is NULL,
+ * the drm core will force buffer idle
+ * during validation.
+ */
+
+ int (*command_stream_barrier) (struct drm_buffer_object *bo,
+ uint32_t new_fence_class,
+ uint32_t new_fence_type,
+ int no_wait);
};
/*
diff --git a/linux-core/i915_drv.c b/linux-core/i915_drv.c
index 5f2e6adc..ccc061d3 100644
--- a/linux-core/i915_drv.c
+++ b/linux-core/i915_drv.c
@@ -39,17 +39,9 @@ static struct pci_device_id pciidlist[] = {
};
#ifdef I915_HAVE_FENCE
-static struct drm_fence_driver i915_fence_driver = {
- .num_classes = 1,
- .wrap_diff = (1U << (BREADCRUMB_BITS - 1)),
- .flush_diff = (1U << (BREADCRUMB_BITS - 2)),
- .sequence_mask = BREADCRUMB_MASK,
- .lazy_capable = 1,
- .emit = i915_fence_emit_sequence,
- .poke_flush = i915_poke_flush,
- .has_irq = i915_fence_has_irq,
-};
+extern struct drm_fence_driver i915_fence_driver;
#endif
+
#ifdef I915_HAVE_BUFFER
static uint32_t i915_mem_prios[] = {DRM_BO_MEM_PRIV0, DRM_BO_MEM_TT, DRM_BO_MEM_LOCAL};
@@ -67,6 +59,7 @@ static struct drm_bo_driver i915_bo_driver = {
.evict_flags = i915_evict_flags,
.move = i915_move,
.ttm_cache_flush = i915_flush_ttm,
+ .command_stream_barrier = NULL,
};
#endif
diff --git a/linux-core/i915_fence.c b/linux-core/i915_fence.c
index e3c76df6..8a2e7f13 100644
--- a/linux-core/i915_fence.c
+++ b/linux-core/i915_fence.c
@@ -35,97 +35,121 @@
#include "i915_drv.h"
/*
- * Implements an intel sync flush operation.
+ * Initiate a sync flush if it's not already pending.
*/
-static void i915_perform_flush(struct drm_device *dev)
+static void i915_initiate_rwflush(struct drm_i915_private *dev_priv,
+ struct drm_fence_class_manager *fc)
+{
+ if ((fc->pending_flush & DRM_I915_FENCE_TYPE_RW) &&
+ !dev_priv->flush_pending) {
+ dev_priv->flush_sequence = (uint32_t) READ_BREADCRUMB(dev_priv);
+ dev_priv->flush_flags = fc->pending_flush;
+ dev_priv->saved_flush_status = READ_HWSP(dev_priv, 0);
+ I915_WRITE(I915REG_INSTPM, (1 << 5) | (1 << 21));
+ dev_priv->flush_pending = 1;
+ fc->pending_flush &= ~DRM_I915_FENCE_TYPE_RW;
+ }
+}
+
+static void i915_fence_flush(struct drm_device *dev,
+ uint32_t fence_class)
+{
+ struct drm_i915_private *dev_priv =
+ (struct drm_i915_private *) dev->dev_private;
+ struct drm_fence_manager *fm = &dev->fm;
+ struct drm_fence_class_manager *fc = &fm->fence_class[0];
+ unsigned long irq_flags;
+
+ if (unlikely(!dev_priv))
+ return;
+
+ write_lock_irqsave(&fm->lock, irq_flags);
+ i915_initiate_rwflush(dev_priv, fc);
+ write_unlock_irqrestore(&fm->lock, irq_flags);
+}
+
+static void i915_fence_poll(struct drm_device *dev, uint32_t fence_class,
+ uint32_t waiting_types)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
struct drm_fence_manager *fm = &dev->fm;
struct drm_fence_class_manager *fc = &fm->fence_class[0];
- struct drm_fence_driver *driver = dev->driver->fence_driver;
uint32_t flush_flags = 0;
uint32_t flush_sequence = 0;
uint32_t i_status;
- uint32_t diff;
uint32_t sequence;
- int rwflush;
- if (!dev_priv)
+ if (unlikely(!dev_priv))
return;
- if (fc->pending_exe_flush) {
- sequence = READ_BREADCRUMB(dev_priv);
+ /*
+ * First, report any executed sync flush:
+ */
+
+ if (dev_priv->flush_pending) {
+ i_status = READ_HWSP(dev_priv, 0);
+ if ((i_status & (1 << 12)) !=
+ (dev_priv->saved_flush_status & (1 << 12))) {
+ flush_flags = dev_priv->flush_flags;
+ flush_sequence = dev_priv->flush_sequence;
+ dev_priv->flush_pending = 0;
+ drm_fence_handler(dev, 0, flush_sequence, flush_flags, 0);
+ }
+ }
- /*
- * First update fences with the current breadcrumb.
- */
+ /*
+ * Report A new breadcrumb, and adjust IRQs.
+ */
+
+ if (waiting_types & DRM_FENCE_TYPE_EXE) {
+ sequence = READ_BREADCRUMB(dev_priv);
- diff = (sequence - fc->last_exe_flush) & BREADCRUMB_MASK;
- if (diff < driver->wrap_diff && diff != 0) {
- drm_fence_handler(dev, 0, sequence,
+ if (sequence != dev_priv->reported_sequence ||
+ !dev_priv->reported_sequence_valid) {
+ drm_fence_handler(dev, 0, sequence,
DRM_FENCE_TYPE_EXE, 0);
+ dev_priv->reported_sequence = sequence;
+ dev_priv->reported_sequence_valid = 1;
}
- if (dev_priv->fence_irq_on && !fc->pending_exe_flush) {
+ if (dev_priv->fence_irq_on && !(waiting_types & DRM_FENCE_TYPE_EXE)) {
i915_user_irq_off(dev_priv);
dev_priv->fence_irq_on = 0;
- } else if (!dev_priv->fence_irq_on && fc->pending_exe_flush) {
+ } else if (!dev_priv->fence_irq_on && (waiting_types & DRM_FENCE_TYPE_EXE)) {
i915_user_irq_on(dev_priv);
dev_priv->fence_irq_on = 1;
}
}
- if (dev_priv->flush_pending) {
- i_status = READ_HWSP(dev_priv, 0);
- if ((i_status & (1 << 12)) !=
- (dev_priv->saved_flush_status & (1 << 12))) {
- flush_flags = dev_priv->flush_flags;
- flush_sequence = dev_priv->flush_sequence;
- dev_priv->flush_pending = 0;
- drm_fence_handler(dev, 0, flush_sequence, flush_flags, 0);
- }
- }
+ /*
+ * There may be new RW flushes pending. Start them.
+ */
+
+ i915_initiate_rwflush(dev_priv, fc);
- rwflush = fc->pending_flush & DRM_I915_FENCE_TYPE_RW;
- if (rwflush && !dev_priv->flush_pending) {
- dev_priv->flush_sequence = (uint32_t) READ_BREADCRUMB(dev_priv);
- dev_priv->flush_flags = fc->pending_flush;
- dev_priv->saved_flush_status = READ_HWSP(dev_priv, 0);
- I915_WRITE(I915REG_INSTPM, (1 << 5) | (1 << 21));
- dev_priv->flush_pending = 1;
- fc->pending_flush &= ~DRM_I915_FENCE_TYPE_RW;
- }
+ /*
+ * And possibly, but unlikely, they finish immediately.
+ */
if (dev_priv->flush_pending) {
i_status = READ_HWSP(dev_priv, 0);
- if ((i_status & (1 << 12)) !=
- (dev_priv->saved_flush_status & (1 << 12))) {
+ if (unlikely((i_status & (1 << 12)) !=
+ (dev_priv->saved_flush_status & (1 << 12)))) {
flush_flags = dev_priv->flush_flags;
flush_sequence = dev_priv->flush_sequence;
dev_priv->flush_pending = 0;
drm_fence_handler(dev, 0, flush_sequence, flush_flags, 0);
}
}
-
}
-void i915_poke_flush(struct drm_device *dev, uint32_t class)
-{
- struct drm_fence_manager *fm = &dev->fm;
- unsigned long flags;
-
- write_lock_irqsave(&fm->lock, flags);
- i915_perform_flush(dev);
- write_unlock_irqrestore(&fm->lock, flags);
-}
-
-int i915_fence_emit_sequence(struct drm_device *dev, uint32_t class,
+static int i915_fence_emit_sequence(struct drm_device *dev, uint32_t class,
uint32_t flags, uint32_t *sequence,
uint32_t *native_type)
{
drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private;
- if (!dev_priv)
+ if (unlikely(!dev_priv))
return -EINVAL;
i915_emit_irq(dev);
@@ -140,20 +164,130 @@ int i915_fence_emit_sequence(struct drm_device *dev, uint32_t class,
void i915_fence_handler(struct drm_device *dev)
{
struct drm_fence_manager *fm = &dev->fm;
+ struct drm_fence_class_manager *fc = &fm->fence_class[0];
write_lock(&fm->lock);
- i915_perform_flush(dev);
+ i915_fence_poll(dev, 0, fc->waiting_types);
write_unlock(&fm->lock);
}
-int i915_fence_has_irq(struct drm_device *dev, uint32_t class, uint32_t flags)
+/*
+ * We need a separate wait function since we need to poll for
+ * sync flushes.
+ */
+
+static int i915_fence_wait(struct drm_fence_object *fence,
+ int lazy, int interruptible, uint32_t mask)
{
+ struct drm_device *dev = fence->dev;
+ drm_i915_private_t *dev_priv = (struct drm_i915_private *) dev->dev_private;
+ struct drm_fence_manager *fm = &dev->fm;
+ struct drm_fence_class_manager *fc = &fm->fence_class[0];
+ int ret;
+ unsigned long _end = jiffies + 3 * DRM_HZ;
+
+ drm_fence_object_flush(fence, mask);
+ if (likely(interruptible))
+ ret = wait_event_interruptible_timeout
+ (fc->fence_queue, drm_fence_object_signaled(fence, DRM_FENCE_TYPE_EXE),
+ 3 * DRM_HZ);
+ else
+ ret = wait_event_timeout
+ (fc->fence_queue, drm_fence_object_signaled(fence, DRM_FENCE_TYPE_EXE),
+ 3 * DRM_HZ);
+
+ if (unlikely(ret == -ERESTARTSYS))
+ return -EAGAIN;
+
+ if (unlikely(ret == 0))
+ return -EBUSY;
+
+ if (likely(mask == DRM_FENCE_TYPE_EXE ||
+ drm_fence_object_signaled(fence, mask)))
+ return 0;
+
/*
- * We have an irq that tells us when we have a new breadcrumb.
+ * Remove this code snippet when fixed. HWSTAM doesn't let
+ * flush info through...
*/
- if (class == 0 && flags == DRM_FENCE_TYPE_EXE)
- return 1;
+ if (unlikely(dev_priv && !dev_priv->irq_enabled)) {
+ unsigned long irq_flags;
- return 0;
+ DRM_ERROR("X server disabled IRQs before releasing frame buffer.\n");
+ msleep(100);
+ dev_priv->flush_pending = 0;
+ write_lock_irqsave(&fm->lock, irq_flags);
+ drm_fence_handler(dev, fence->fence_class,
+ fence->sequence, fence->type, 0);
+ write_unlock_irqrestore(&fm->lock, irq_flags);
+ }
+
+ /*
+ * Poll for sync flush completion.
+ */
+
+ return drm_fence_wait_polling(fence, lazy, interruptible, mask, _end);
+}
+
+static uint32_t i915_fence_needed_flush(struct drm_fence_object *fence)
+{
+ uint32_t flush_flags = fence->waiting_types &
+ ~(DRM_FENCE_TYPE_EXE | fence->signaled_types);
+
+ if (likely(flush_flags == 0 ||
+ ((flush_flags & ~fence->native_types) == 0) ||
+ (fence->signaled_types != DRM_FENCE_TYPE_EXE)))
+ return 0;
+ else {
+ struct drm_device *dev = fence->dev;
+ struct drm_i915_private *dev_priv = (struct drm_i915_private *) dev->dev_private;
+ struct drm_fence_driver *driver = dev->driver->fence_driver;
+
+ if (unlikely(!dev_priv))
+ return 0;
+
+ if (dev_priv->flush_pending) {
+ uint32_t diff = (dev_priv->flush_sequence - fence->sequence) &
+ driver->sequence_mask;
+
+ if (diff < driver->wrap_diff)
+ return 0;
+ }
+ }
+ return flush_flags;
+}
+
+/*
+ * In the very unlikely event that "poll" is not really called very often
+ * we need the following function to handle sequence wraparounds.
+ */
+
+void i915_invalidate_reported_sequence(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = (struct drm_i915_private *)
+ dev->dev_private;
+ struct drm_fence_manager *fm = &dev->fm;
+ unsigned long irq_flags;
+
+ if (unlikely(!dev_priv))
+ return;
+
+ write_lock_irqsave(&fm->lock, irq_flags);
+ dev_priv->reported_sequence_valid = 0;
+ write_unlock_irqrestore(&fm->lock, irq_flags);
}
+
+
+struct drm_fence_driver i915_fence_driver = {
+ .num_classes = 1,
+ .wrap_diff = (1U << (BREADCRUMB_BITS - 1)),
+ .flush_diff = (1U << (BREADCRUMB_BITS - 2)),
+ .sequence_mask = BREADCRUMB_MASK,
+ .has_irq = NULL,
+ .emit = i915_fence_emit_sequence,
+ .flush = i915_fence_flush,
+ .poll = i915_fence_poll,
+ .needed_flush = i915_fence_needed_flush,
+ .wait = i915_fence_wait,
+};
diff --git a/linux-core/nouveau_buffer.c b/linux-core/nouveau_buffer.c
index a652bb1d..11549317 100644
--- a/linux-core/nouveau_buffer.c
+++ b/linux-core/nouveau_buffer.c
@@ -294,5 +294,6 @@ struct drm_bo_driver nouveau_bo_driver = {
.init_mem_type = nouveau_bo_init_mem_type,
.evict_flags = nouveau_bo_evict_flags,
.move = nouveau_bo_move,
- .ttm_cache_flush= nouveau_bo_flush_ttm
+ .ttm_cache_flush= nouveau_bo_flush_ttm,
+ .command_stream_barrier = NULL
};
diff --git a/linux-core/nouveau_fence.c b/linux-core/nouveau_fence.c
index 4e624a7a..59dcf7d0 100644
--- a/linux-core/nouveau_fence.c
+++ b/linux-core/nouveau_fence.c
@@ -75,7 +75,7 @@ nouveau_fence_emit(struct drm_device *dev, uint32_t class, uint32_t flags,
}
static void
-nouveau_fence_perform_flush(struct drm_device *dev, uint32_t class)
+nouveau_fence_poll(struct drm_device *dev, uint32_t class, uint32_t waiting_types)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct drm_fence_class_manager *fc = &dev->fm.fence_class[class];
@@ -83,42 +83,26 @@ nouveau_fence_perform_flush(struct drm_device *dev, uint32_t class)
uint32_t pending_types = 0;
DRM_DEBUG("class=%d\n", class);
-
- pending_types = fc->pending_flush |
- ((fc->pending_exe_flush) ? DRM_FENCE_TYPE_EXE : 0);
- DRM_DEBUG("pending: 0x%08x 0x%08x\n", pending_types,
- fc->pending_flush);
+ DRM_DEBUG("pending: 0x%08x 0x%08x\n", waiting_types, fc->waiting_types);
if (pending_types) {
uint32_t sequence = NV_READ(chan->ref_cnt);
DRM_DEBUG("got 0x%08x\n", sequence);
- drm_fence_handler(dev, class, sequence, pending_types, 0);
+ drm_fence_handler(dev, class, sequence, waiting_types, 0);
}
}
-static void
-nouveau_fence_poke_flush(struct drm_device *dev, uint32_t class)
-{
- struct drm_fence_manager *fm = &dev->fm;
- unsigned long flags;
-
- DRM_DEBUG("class=%d\n", class);
-
- write_lock_irqsave(&fm->lock, flags);
- nouveau_fence_perform_flush(dev, class);
- write_unlock_irqrestore(&fm->lock, flags);
-}
-
void
nouveau_fence_handler(struct drm_device *dev, int channel)
{
struct drm_fence_manager *fm = &dev->fm;
+ struct drm_fence_class_manager *fc = &fm->fence_class[channel];
DRM_DEBUG("class=%d\n", channel);
write_lock(&fm->lock);
- nouveau_fence_perform_flush(dev, channel);
+ nouveau_fence_poll(dev, channel, fc->waiting_types);
write_unlock(&fm->lock);
}
@@ -127,8 +111,10 @@ struct drm_fence_driver nouveau_fence_driver = {
.wrap_diff = (1 << 30),
.flush_diff = (1 << 29),
.sequence_mask = 0xffffffffU,
- .lazy_capable = 1,
.has_irq = nouveau_fence_has_irq,
.emit = nouveau_fence_emit,
- .poke_flush = nouveau_fence_poke_flush
+ .flush = NULL,
+ .poll = nouveau_fence_poll,
+ .needed_flush = NULL,
+ .wait = NULL
};
diff --git a/linux-core/via_fence.c b/linux-core/via_fence.c
index 9af1bf3b..3a680a32 100644
--- a/linux-core/via_fence.c
+++ b/linux-core/via_fence.c
@@ -38,27 +38,21 @@
* DRM_VIA_FENCE_TYPE_ACCEL guarantees that all 2D & 3D rendering is complete.
*/
-
-static uint32_t via_perform_flush(struct drm_device *dev, uint32_t class)
+static void via_fence_poll(struct drm_device *dev, uint32_t class,
+ uint32_t waiting_types)
{
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
- struct drm_fence_class_manager *fc = &dev->fm.fence_class[class];
- uint32_t pending_flush_types = 0;
uint32_t signaled_flush_types = 0;
uint32_t status;
if (class != 0)
- return 0;
+ return;
- if (!dev_priv)
- return 0;
+ if (unlikely(!dev_priv))
+ return;
spin_lock(&dev_priv->fence_lock);
-
- pending_flush_types = fc->pending_flush |
- ((fc->pending_exe_flush) ? DRM_FENCE_TYPE_EXE : 0);
-
- if (pending_flush_types) {
+ if (waiting_types) {
/*
* Take the idlelock. This guarantees that the next time a client tries
@@ -77,7 +71,7 @@ static uint32_t via_perform_flush(struct drm_device *dev, uint32_t class)
* Check if AGP command reader is idle.
*/
- if (pending_flush_types & DRM_FENCE_TYPE_EXE)
+ if (waiting_types & DRM_FENCE_TYPE_EXE)
if (VIA_READ(0x41C) & 0x80000000)
signaled_flush_types |= DRM_FENCE_TYPE_EXE;
@@ -85,7 +79,7 @@ static uint32_t via_perform_flush(struct drm_device *dev, uint32_t class)
* Check VRAM command queue empty and 2D + 3D engines idle.
*/
- if (pending_flush_types & DRM_VIA_FENCE_TYPE_ACCEL) {
+ if (waiting_types & DRM_VIA_FENCE_TYPE_ACCEL) {
status = VIA_READ(VIA_REG_STATUS);
if ((status & VIA_VR_QUEUE_BUSY) &&
!(status & (VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY | VIA_3D_ENG_BUSY)))
@@ -93,8 +87,8 @@ static uint32_t via_perform_flush(struct drm_device *dev, uint32_t class)
}
if (signaled_flush_types) {
- pending_flush_types &= ~signaled_flush_types;
- if (!pending_flush_types && dev_priv->have_idlelock) {
+ waiting_types &= ~signaled_flush_types;
+ if (!waiting_types && dev_priv->have_idlelock) {
drm_idlelock_release(&dev->lock);
dev_priv->have_idlelock = 0;
}
@@ -105,8 +99,7 @@ static uint32_t via_perform_flush(struct drm_device *dev, uint32_t class)
spin_unlock(&dev_priv->fence_lock);
- return fc->pending_flush |
- ((fc->pending_exe_flush) ? DRM_FENCE_TYPE_EXE : 0);
+ return;
}
@@ -114,8 +107,8 @@ static uint32_t via_perform_flush(struct drm_device *dev, uint32_t class)
* Emit a fence sequence.
*/
-int via_fence_emit_sequence(struct drm_device * dev, uint32_t class, uint32_t flags,
- uint32_t * sequence, uint32_t * native_type)
+static int via_fence_emit_sequence(struct drm_device * dev, uint32_t class, uint32_t flags,
+ uint32_t * sequence, uint32_t * native_type)
{
drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
int ret = 0;
@@ -150,36 +143,6 @@ int via_fence_emit_sequence(struct drm_device * dev, uint32_t class, uint32_t fl
}
/**
- * Manual poll (from the fence manager).
- */
-
-void via_poke_flush(struct drm_device * dev, uint32_t class)
-{
- drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
- struct drm_fence_manager *fm = &dev->fm;
- unsigned long flags;
- uint32_t pending_flush;
-
- if (!dev_priv)
- return ;
-
- write_lock_irqsave(&fm->lock, flags);
- pending_flush = via_perform_flush(dev, class);
- if (pending_flush)
- pending_flush = via_perform_flush(dev, class);
- write_unlock_irqrestore(&fm->lock, flags);
-
- /*
- * Kick the timer if there are more flushes pending.
- */
-
- if (pending_flush && !timer_pending(&dev_priv->fence_timer)) {
- dev_priv->fence_timer.expires = jiffies + 1;
- add_timer(&dev_priv->fence_timer);
- }
-}
-
-/**
* No irq fence expirations implemented yet.
* Although both the HQV engines and PCI dmablit engines signal
* idle with an IRQ, we haven't implemented this yet.
@@ -187,45 +150,20 @@ void via_poke_flush(struct drm_device * dev, uint32_t class)
* unless the caller wanting to wait for a fence object has indicated a lazy wait.
*/
-int via_fence_has_irq(struct drm_device * dev, uint32_t class,
- uint32_t flags)
+static int via_fence_has_irq(struct drm_device * dev, uint32_t class,
+ uint32_t flags)
{
return 0;
}
-/**
- * Regularly call the flush function. This enables lazy waits, so we can
- * set lazy_capable. Lazy waits don't really care when the fence expires,
- * so a timer tick delay should be fine.
- */
-
-void via_fence_timer(unsigned long data)
-{
- struct drm_device *dev = (struct drm_device *) data;
- drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
- struct drm_fence_manager *fm = &dev->fm;
- uint32_t pending_flush;
- struct drm_fence_class_manager *fc = &dev->fm.fence_class[0];
-
- if (!dev_priv)
- return;
- if (!fm->initialized)
- goto out_unlock;
-
- via_poke_flush(dev, 0);
- pending_flush = fc->pending_flush |
- ((fc->pending_exe_flush) ? DRM_FENCE_TYPE_EXE : 0);
-
- /*
- * disable timer if there are no more flushes pending.
- */
-
- if (!pending_flush && timer_pending(&dev_priv->fence_timer)) {
- BUG_ON(dev_priv->have_idlelock);
- del_timer(&dev_priv->fence_timer);
- }
- return;
-out_unlock:
- return;
-
-}
+struct drm_fence_driver via_fence_driver = {
+ .num_classes = 1,
+ .wrap_diff = (1 << 30),
+ .flush_diff = (1 << 20),
+ .sequence_mask = 0xffffffffU,
+ .has_irq = via_fence_has_irq,
+ .emit = via_fence_emit_sequence,
+ .poll = via_fence_poll,
+ .needed_flush = NULL,
+ .wait = NULL
+};
diff --git a/linux-core/xgi_drv.c b/linux-core/xgi_drv.c
index 4f0b4ed0..f0225f89 100644
--- a/linux-core/xgi_drv.c
+++ b/linux-core/xgi_drv.c
@@ -37,16 +37,7 @@ static struct pci_device_id pciidlist[] = {
xgi_PCI_IDS
};
-static struct drm_fence_driver xgi_fence_driver = {
- .num_classes = 1,
- .wrap_diff = BEGIN_BEGIN_IDENTIFICATION_MASK,
- .flush_diff = BEGIN_BEGIN_IDENTIFICATION_MASK - 1,
- .sequence_mask = BEGIN_BEGIN_IDENTIFICATION_MASK,
- .lazy_capable = 1,
- .emit = xgi_fence_emit_sequence,
- .poke_flush = xgi_poke_flush,
- .has_irq = xgi_fence_has_irq
-};
+extern struct drm_fence_driver xgi_fence_driver;
int xgi_bootstrap(struct drm_device *, void *, struct drm_file *);
diff --git a/linux-core/xgi_fence.c b/linux-core/xgi_fence.c
index 9a75581a..63ed29ee 100644
--- a/linux-core/xgi_fence.c
+++ b/linux-core/xgi_fence.c
@@ -30,44 +30,37 @@
#include "xgi_misc.h"
#include "xgi_cmdlist.h"
-static uint32_t xgi_do_flush(struct drm_device * dev, uint32_t class)
+static void xgi_fence_poll(struct drm_device * dev, uint32_t class,
+ uint32_t waiting_types)
{
struct xgi_info * info = dev->dev_private;
- struct drm_fence_class_manager * fc = &dev->fm.fence_class[class];
- uint32_t pending_flush_types = 0;
- uint32_t signaled_flush_types = 0;
+ uint32_t signaled_types = 0;
if ((info == NULL) || (class != 0))
- return 0;
+ return;
DRM_SPINLOCK(&info->fence_lock);
- pending_flush_types = fc->pending_flush |
- ((fc->pending_exe_flush) ? DRM_FENCE_TYPE_EXE : 0);
-
- if (pending_flush_types) {
- if (pending_flush_types & DRM_FENCE_TYPE_EXE) {
+ if (waiting_types) {
+ if (waiting_types & DRM_FENCE_TYPE_EXE) {
const u32 begin_id = le32_to_cpu(DRM_READ32(info->mmio_map,
0x2820))
& BEGIN_BEGIN_IDENTIFICATION_MASK;
if (begin_id != info->complete_sequence) {
info->complete_sequence = begin_id;
- signaled_flush_types |= DRM_FENCE_TYPE_EXE;
+ signaled_types |= DRM_FENCE_TYPE_EXE;
}
}
- if (signaled_flush_types) {
+ if (signaled_types) {
drm_fence_handler(dev, 0, info->complete_sequence,
- signaled_flush_types, 0);
+ signaled_types, 0);
}
}
DRM_SPINUNLOCK(&info->fence_lock);
-
- return fc->pending_flush |
- ((fc->pending_exe_flush) ? DRM_FENCE_TYPE_EXE : 0);
}
@@ -98,25 +91,13 @@ int xgi_fence_emit_sequence(struct drm_device * dev, uint32_t class,
}
-void xgi_poke_flush(struct drm_device * dev, uint32_t class)
-{
- struct drm_fence_manager * fm = &dev->fm;
- unsigned long flags;
-
-
- write_lock_irqsave(&fm->lock, flags);
- xgi_do_flush(dev, class);
- write_unlock_irqrestore(&fm->lock, flags);
-}
-
-
void xgi_fence_handler(struct drm_device * dev)
{
struct drm_fence_manager * fm = &dev->fm;
-
+ struct drm_fence_class_manager *fc = &fm->fence_class[0];
write_lock(&fm->lock);
- xgi_do_flush(dev, 0);
+ xgi_fence_poll(dev, 0, fc->waiting_types);
write_unlock(&fm->lock);
}
@@ -125,3 +106,17 @@ int xgi_fence_has_irq(struct drm_device *dev, uint32_t class, uint32_t flags)
{
return ((class == 0) && (flags == DRM_FENCE_TYPE_EXE)) ? 1 : 0;
}
+
+struct drm_fence_driver xgi_fence_driver = {
+ .num_classes = 1,
+ .wrap_diff = BEGIN_BEGIN_IDENTIFICATION_MASK,
+ .flush_diff = BEGIN_BEGIN_IDENTIFICATION_MASK - 1,
+ .sequence_mask = BEGIN_BEGIN_IDENTIFICATION_MASK,
+ .has_irq = xgi_fence_has_irq,
+ .emit = xgi_fence_emit_sequence,
+ .flush = NULL,
+ .poll = xgi_fence_poll,
+ .needed_flush = NULL,
+ .wait = NULL
+};
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 23:03:18 +0000