struct vmw_private *dev_priv;
spinlock_t lock;
struct list_head fence_list;
- struct work_struct work;
+ struct work_struct work, ping_work;
u32 user_fence_size;
u32 fence_size;
u32 event_fence_action_size;
bool goal_irq_on; /* Protected by @goal_irq_mutex */
bool seqno_valid; /* Protected by @lock, and may not be set to true
without the @goal_irq_mutex held. */
+ unsigned ctx;
};
struct vmw_user_fence {
uint32_t *tv_usec;
};
+static struct vmw_fence_manager *
+fman_from_fence(struct vmw_fence_obj *fence)
+{
+ return container_of(fence->base.lock, struct vmw_fence_manager, lock);
+}
+
/**
* Note on fencing subsystem usage of irqs:
* Typically the vmw_fences_update function is called
* objects with actions attached to them.
*/
-static void vmw_fence_obj_destroy_locked(struct kref *kref)
+static void vmw_fence_obj_destroy(struct fence *f)
{
struct vmw_fence_obj *fence =
- container_of(kref, struct vmw_fence_obj, kref);
+ container_of(f, struct vmw_fence_obj, base);
- struct vmw_fence_manager *fman = fence->fman;
- unsigned int num_fences;
+ struct vmw_fence_manager *fman = fman_from_fence(fence);
+ unsigned long irq_flags;
+ spin_lock_irqsave(&fman->lock, irq_flags);
list_del_init(&fence->head);
- num_fences = --fman->num_fence_objects;
- spin_unlock_irq(&fman->lock);
- if (fence->destroy)
- fence->destroy(fence);
- else
- kfree(fence);
+ --fman->num_fence_objects;
+ spin_unlock_irqrestore(&fman->lock, irq_flags);
+ fence->destroy(fence);
+}
- spin_lock_irq(&fman->lock);
+static const char *vmw_fence_get_driver_name(struct fence *f)
+{
+ return "vmwgfx";
+}
+
+static const char *vmw_fence_get_timeline_name(struct fence *f)
+{
+ return "svga";
}
+static void vmw_fence_ping_func(struct work_struct *work)
+{
+ struct vmw_fence_manager *fman =
+ container_of(work, struct vmw_fence_manager, ping_work);
+
+ vmw_fifo_ping_host(fman->dev_priv, SVGA_SYNC_GENERIC);
+}
+
+static bool vmw_fence_enable_signaling(struct fence *f)
+{
+ struct vmw_fence_obj *fence =
+ container_of(f, struct vmw_fence_obj, base);
+
+ struct vmw_fence_manager *fman = fman_from_fence(fence);
+ struct vmw_private *dev_priv = fman->dev_priv;
+
+ __le32 __iomem *fifo_mem = dev_priv->mmio_virt;
+ u32 seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE);
+ if (seqno - fence->base.seqno < VMW_FENCE_WRAP)
+ return false;
+
+ if (mutex_trylock(&dev_priv->hw_mutex)) {
+ vmw_fifo_ping_host_locked(dev_priv, SVGA_SYNC_GENERIC);
+ mutex_unlock(&dev_priv->hw_mutex);
+ } else
+ schedule_work(&fman->ping_work);
+
+ return true;
+}
+
+struct vmwgfx_wait_cb {
+ struct fence_cb base;
+ struct task_struct *task;
+};
+
+static void
+vmwgfx_wait_cb(struct fence *fence, struct fence_cb *cb)
+{
+ struct vmwgfx_wait_cb *wait =
+ container_of(cb, struct vmwgfx_wait_cb, base);
+
+ wake_up_process(wait->task);
+}
+
+static void __vmw_fences_update(struct vmw_fence_manager *fman);
+
+static long vmw_fence_wait(struct fence *f, bool intr, signed long timeout)
+{
+ struct vmw_fence_obj *fence =
+ container_of(f, struct vmw_fence_obj, base);
+
+ struct vmw_fence_manager *fman = fman_from_fence(fence);
+ struct vmw_private *dev_priv = fman->dev_priv;
+ struct vmwgfx_wait_cb cb;
+ long ret = timeout;
+ unsigned long irq_flags;
+
+ if (likely(vmw_fence_obj_signaled(fence)))
+ return timeout;
+
+ vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
+ vmw_seqno_waiter_add(dev_priv);
+
+ spin_lock_irqsave(f->lock, irq_flags);
+
+ if (intr && signal_pending(current)) {
+ ret = -ERESTARTSYS;
+ goto out;
+ }
+
+ cb.base.func = vmwgfx_wait_cb;
+ cb.task = current;
+ list_add(&cb.base.node, &f->cb_list);
+
+ while (ret > 0) {
+ __vmw_fences_update(fman);
+ if (test_bit(FENCE_FLAG_SIGNALED_BIT, &f->flags))
+ break;
+
+ if (intr)
+ __set_current_state(TASK_INTERRUPTIBLE);
+ else
+ __set_current_state(TASK_UNINTERRUPTIBLE);
+ spin_unlock_irqrestore(f->lock, irq_flags);
+
+ ret = schedule_timeout(ret);
+
+ spin_lock_irqsave(f->lock, irq_flags);
+ if (ret > 0 && intr && signal_pending(current))
+ ret = -ERESTARTSYS;
+ }
+
+ if (!list_empty(&cb.base.node))
+ list_del(&cb.base.node);
+ __set_current_state(TASK_RUNNING);
+
+out:
+ spin_unlock_irqrestore(f->lock, irq_flags);
+
+ vmw_seqno_waiter_remove(dev_priv);
+
+ return ret;
+}
+
+static struct fence_ops vmw_fence_ops = {
+ .get_driver_name = vmw_fence_get_driver_name,
+ .get_timeline_name = vmw_fence_get_timeline_name,
+ .enable_signaling = vmw_fence_enable_signaling,
+ .wait = vmw_fence_wait,
+ .release = vmw_fence_obj_destroy,
+};
+
/**
* Execute signal actions on fences recently signaled.
INIT_LIST_HEAD(&fman->fence_list);
INIT_LIST_HEAD(&fman->cleanup_list);
INIT_WORK(&fman->work, &vmw_fence_work_func);
+ INIT_WORK(&fman->ping_work, &vmw_fence_ping_func);
fman->fifo_down = true;
fman->user_fence_size = ttm_round_pot(sizeof(struct vmw_user_fence));
fman->fence_size = ttm_round_pot(sizeof(struct vmw_fence_obj));
fman->event_fence_action_size =
ttm_round_pot(sizeof(struct vmw_event_fence_action));
mutex_init(&fman->goal_irq_mutex);
+ fman->ctx = fence_context_alloc(1);
return fman;
}
bool lists_empty;
(void) cancel_work_sync(&fman->work);
+ (void) cancel_work_sync(&fman->ping_work);
spin_lock_irqsave(&fman->lock, irq_flags);
lists_empty = list_empty(&fman->fence_list) &&
void (*destroy) (struct vmw_fence_obj *fence))
{
unsigned long irq_flags;
- unsigned int num_fences;
int ret = 0;
- fence->seqno = seqno;
+ fence_init(&fence->base, &vmw_fence_ops, &fman->lock,
+ fman->ctx, seqno);
INIT_LIST_HEAD(&fence->seq_passed_actions);
- fence->fman = fman;
- fence->signaled = 0;
- kref_init(&fence->kref);
fence->destroy = destroy;
- init_waitqueue_head(&fence->queue);
spin_lock_irqsave(&fman->lock, irq_flags);
if (unlikely(fman->fifo_down)) {
goto out_unlock;
}
list_add_tail(&fence->head, &fman->fence_list);
- num_fences = ++fman->num_fence_objects;
+ ++fman->num_fence_objects;
out_unlock:
spin_unlock_irqrestore(&fman->lock, irq_flags);
}
-struct vmw_fence_obj *vmw_fence_obj_reference(struct vmw_fence_obj *fence)
-{
- if (unlikely(fence == NULL))
- return NULL;
-
- kref_get(&fence->kref);
- return fence;
-}
-
-/**
- * vmw_fence_obj_unreference
- *
- * Note that this function may not be entered with disabled irqs since
- * it may re-enable them in the destroy function.
- *
- */
-void vmw_fence_obj_unreference(struct vmw_fence_obj **fence_p)
-{
- struct vmw_fence_obj *fence = *fence_p;
- struct vmw_fence_manager *fman;
-
- if (unlikely(fence == NULL))
- return;
-
- fman = fence->fman;
- *fence_p = NULL;
- spin_lock_irq(&fman->lock);
- BUG_ON(atomic_read(&fence->kref.refcount) == 0);
- kref_put(&fence->kref, vmw_fence_obj_destroy_locked);
- spin_unlock_irq(&fman->lock);
-}
-
static void vmw_fences_perform_actions(struct vmw_fence_manager *fman,
struct list_head *list)
{
list_for_each_entry(fence, &fman->fence_list, head) {
if (!list_empty(&fence->seq_passed_actions)) {
fman->seqno_valid = true;
- iowrite32(fence->seqno,
+ iowrite32(fence->base.seqno,
fifo_mem + SVGA_FIFO_FENCE_GOAL);
break;
}
*/
static bool vmw_fence_goal_check_locked(struct vmw_fence_obj *fence)
{
+ struct vmw_fence_manager *fman = fman_from_fence(fence);
u32 goal_seqno;
__le32 __iomem *fifo_mem;
- if (fence->signaled)
+ if (fence_is_signaled_locked(&fence->base))
return false;
- fifo_mem = fence->fman->dev_priv->mmio_virt;
+ fifo_mem = fman->dev_priv->mmio_virt;
goal_seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE_GOAL);
- if (likely(fence->fman->seqno_valid &&
- goal_seqno - fence->seqno < VMW_FENCE_WRAP))
+ if (likely(fman->seqno_valid &&
+ goal_seqno - fence->base.seqno < VMW_FENCE_WRAP))
return false;
- iowrite32(fence->seqno, fifo_mem + SVGA_FIFO_FENCE_GOAL);
- fence->fman->seqno_valid = true;
+ iowrite32(fence->base.seqno, fifo_mem + SVGA_FIFO_FENCE_GOAL);
+ fman->seqno_valid = true;
return true;
}
-void vmw_fences_update(struct vmw_fence_manager *fman)
+static void __vmw_fences_update(struct vmw_fence_manager *fman)
{
- unsigned long flags;
struct vmw_fence_obj *fence, *next_fence;
struct list_head action_list;
bool needs_rerun;
seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE);
rerun:
- spin_lock_irqsave(&fman->lock, flags);
list_for_each_entry_safe(fence, next_fence, &fman->fence_list, head) {
- if (seqno - fence->seqno < VMW_FENCE_WRAP) {
+ if (seqno - fence->base.seqno < VMW_FENCE_WRAP) {
list_del_init(&fence->head);
- fence->signaled = 1;
+ fence_signal_locked(&fence->base);
INIT_LIST_HEAD(&action_list);
list_splice_init(&fence->seq_passed_actions,
&action_list);
vmw_fences_perform_actions(fman, &action_list);
- wake_up_all(&fence->queue);
} else
break;
}
- needs_rerun = vmw_fence_goal_new_locked(fman, seqno);
-
- if (!list_empty(&fman->cleanup_list))
- (void) schedule_work(&fman->work);
- spin_unlock_irqrestore(&fman->lock, flags);
-
/*
* Rerun if the fence goal seqno was updated, and the
* hardware might have raced with that update, so that
* we missed a fence_goal irq.
*/
+ needs_rerun = vmw_fence_goal_new_locked(fman, seqno);
if (unlikely(needs_rerun)) {
new_seqno = ioread32(fifo_mem + SVGA_FIFO_FENCE);
if (new_seqno != seqno) {
goto rerun;
}
}
+
+ if (!list_empty(&fman->cleanup_list))
+ (void) schedule_work(&fman->work);
}
-bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence)
+void vmw_fences_update(struct vmw_fence_manager *fman)
{
- struct vmw_fence_manager *fman = fence->fman;
unsigned long irq_flags;
- uint32_t signaled;
spin_lock_irqsave(&fman->lock, irq_flags);
- signaled = fence->signaled;
+ __vmw_fences_update(fman);
spin_unlock_irqrestore(&fman->lock, irq_flags);
+}
+
+bool vmw_fence_obj_signaled(struct vmw_fence_obj *fence)
+{
+ struct vmw_fence_manager *fman = fman_from_fence(fence);
- if (signaled)
+ if (test_bit(FENCE_FLAG_SIGNALED_BIT, &fence->base.flags))
return 1;
vmw_fences_update(fman);
- spin_lock_irqsave(&fman->lock, irq_flags);
- signaled = fence->signaled;
- spin_unlock_irqrestore(&fman->lock, irq_flags);
-
- return signaled;
+ return fence_is_signaled(&fence->base);
}
int vmw_fence_obj_wait(struct vmw_fence_obj *fence, bool lazy,
bool interruptible, unsigned long timeout)
{
- struct vmw_private *dev_priv = fence->fman->dev_priv;
- long ret;
+ long ret = fence_wait_timeout(&fence->base, interruptible, timeout);
- if (likely(vmw_fence_obj_signaled(fence)))
+ if (likely(ret > 0))
return 0;
-
- vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
- vmw_seqno_waiter_add(dev_priv);
-
- if (interruptible)
- ret = wait_event_interruptible_timeout
- (fence->queue,
- vmw_fence_obj_signaled(fence),
- timeout);
+ else if (ret == 0)
+ return -EBUSY;
else
- ret = wait_event_timeout
- (fence->queue,
- vmw_fence_obj_signaled(fence),
- timeout);
-
- vmw_seqno_waiter_remove(dev_priv);
-
- if (unlikely(ret == 0))
- ret = -EBUSY;
- else if (likely(ret > 0))
- ret = 0;
-
- return ret;
+ return ret;
}
void vmw_fence_obj_flush(struct vmw_fence_obj *fence)
{
- struct vmw_private *dev_priv = fence->fman->dev_priv;
+ struct vmw_private *dev_priv = fman_from_fence(fence)->dev_priv;
vmw_fifo_ping_host(dev_priv, SVGA_SYNC_GENERIC);
}
static void vmw_fence_destroy(struct vmw_fence_obj *fence)
{
- struct vmw_fence_manager *fman = fence->fman;
+ struct vmw_fence_manager *fman = fman_from_fence(fence);
+
+ fence_free(&fence->base);
- kfree(fence);
/*
* Free kernel space accounting.
*/
{
struct vmw_user_fence *ufence =
container_of(fence, struct vmw_user_fence, fence);
- struct vmw_fence_manager *fman = fence->fman;
+ struct vmw_fence_manager *fman = fman_from_fence(fence);
ttm_base_object_kfree(ufence, base);
/*
void vmw_fence_fifo_down(struct vmw_fence_manager *fman)
{
- unsigned long irq_flags;
struct list_head action_list;
int ret;
* restart when we've released the fman->lock.
*/
- spin_lock_irqsave(&fman->lock, irq_flags);
+ spin_lock_irq(&fman->lock);
fman->fifo_down = true;
while (!list_empty(&fman->fence_list)) {
struct vmw_fence_obj *fence =
list_entry(fman->fence_list.prev, struct vmw_fence_obj,
head);
- kref_get(&fence->kref);
+ fence_get(&fence->base);
spin_unlock_irq(&fman->lock);
ret = vmw_fence_obj_wait(fence, false, false,
if (unlikely(ret != 0)) {
list_del_init(&fence->head);
- fence->signaled = 1;
+ fence_signal(&fence->base);
INIT_LIST_HEAD(&action_list);
list_splice_init(&fence->seq_passed_actions,
&action_list);
vmw_fences_perform_actions(fman, &action_list);
- wake_up_all(&fence->queue);
}
- spin_lock_irq(&fman->lock);
-
BUG_ON(!list_empty(&fence->head));
- kref_put(&fence->kref, vmw_fence_obj_destroy_locked);
+ fence_put(&fence->base);
+ spin_lock_irq(&fman->lock);
}
- spin_unlock_irqrestore(&fman->lock, irq_flags);
+ spin_unlock_irq(&fman->lock);
}
void vmw_fence_fifo_up(struct vmw_fence_manager *fman)
}
fence = &(container_of(base, struct vmw_user_fence, base)->fence);
- fman = fence->fman;
+ fman = fman_from_fence(fence);
arg->signaled = vmw_fence_obj_signaled(fence);
- spin_lock_irq(&fman->lock);
arg->signaled_flags = arg->flags;
+ spin_lock_irq(&fman->lock);
arg->passed_seqno = dev_priv->last_read_seqno;
spin_unlock_irq(&fman->lock);
{
struct vmw_event_fence_action *eaction =
container_of(action, struct vmw_event_fence_action, action);
- struct vmw_fence_manager *fman = eaction->fence->fman;
+ struct vmw_fence_manager *fman = fman_from_fence(eaction->fence);
unsigned long irq_flags;
spin_lock_irqsave(&fman->lock, irq_flags);
static void vmw_fence_obj_add_action(struct vmw_fence_obj *fence,
struct vmw_fence_action *action)
{
- struct vmw_fence_manager *fman = fence->fman;
+ struct vmw_fence_manager *fman = fman_from_fence(fence);
unsigned long irq_flags;
bool run_update = false;
spin_lock_irqsave(&fman->lock, irq_flags);
fman->pending_actions[action->type]++;
- if (fence->signaled) {
+ if (fence_is_signaled_locked(&fence->base)) {
struct list_head action_list;
INIT_LIST_HEAD(&action_list);
bool interruptible)
{
struct vmw_event_fence_action *eaction;
- struct vmw_fence_manager *fman = fence->fman;
+ struct vmw_fence_manager *fman = fman_from_fence(fence);
struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
unsigned long irq_flags;
bool interruptible)
{
struct vmw_event_fence_pending *event;
- struct drm_device *dev = fence->fman->dev_priv->dev;
+ struct vmw_fence_manager *fman = fman_from_fence(fence);
+ struct drm_device *dev = fman->dev_priv->dev;
unsigned long irq_flags;
int ret;
projects / linux-platform-drivers-x86.git / commitdiff