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vmwgfx: Rework fence event action 

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
hifive-unleashed-5.1
Jakob Bornecrantz 2012-02-09 16:56:41 +01:00 committed by Dave Airlie
parent 8bf42225da
commit 8b7de6aa84
2 changed files with 104 additions and 118 deletions
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12
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
View File

@ -657,6 +657,18 @@ int vmw_overlay_unref(struct vmw_private *dev_priv, uint32_t stream_id);
int vmw_overlay_num_overlays(struct vmw_private *dev_priv);
int vmw_overlay_num_free_overlays(struct vmw_private *dev_priv);
/**
* Fence function - vmwgfx_fence.c
*/
int vmw_event_fence_action_queue(struct drm_file *file_priv,
struct vmw_fence_obj *fence,
struct drm_pending_event *event,
uint32_t *tv_sec,
uint32_t *tv_usec,
bool interruptible);
/**
* GMR Id manager
*/

210
drivers/gpu/drm/vmwgfx/vmwgfx_fence.c
View File

@ -69,12 +69,12 @@ struct vmw_user_fence {
* be assigned the current time tv_usec val when the fence signals.
*/
struct vmw_event_fence_action {
struct drm_pending_event e;
struct vmw_fence_action action;
struct drm_pending_event *event;
struct vmw_fence_obj *fence;
struct drm_device *dev;
struct kref kref;
uint32_t size;
uint32_t *tv_sec;
uint32_t *tv_usec;
};
@ -783,49 +783,6 @@ int vmw_fence_obj_unref_ioctl(struct drm_device *dev, void *data,
TTM_REF_USAGE);
}
/**
* vmw_event_fence_action_destroy
*
* @kref: The struct kref embedded in a struct vmw_event_fence_action.
*
* The vmw_event_fence_action destructor that may be called either after
* the fence action cleanup, or when the event is delivered.
* It frees both the vmw_event_fence_action struct and the actual
* event structure copied to user-space.
*/
static void vmw_event_fence_action_destroy(struct kref *kref)
{
struct vmw_event_fence_action *eaction =
container_of(kref, struct vmw_event_fence_action, kref);
struct ttm_mem_global *mem_glob =
vmw_mem_glob(vmw_priv(eaction->dev));
uint32_t size = eaction->size;
kfree(eaction->e.event);
kfree(eaction);
ttm_mem_global_free(mem_glob, size);
}
/**
* vmw_event_fence_action_delivered
*
* @e: The struct drm_pending_event embedded in a struct
* vmw_event_fence_action.
*
* The struct drm_pending_event destructor that is called by drm
* once the event is delivered. Since we don't know whether this function
* will be called before or after the fence action destructor, we
* free a refcount and destroy if it becomes zero.
*/
static void vmw_event_fence_action_delivered(struct drm_pending_event *e)
{
struct vmw_event_fence_action *eaction =
container_of(e, struct vmw_event_fence_action, e);
kref_put(&eaction->kref, vmw_event_fence_action_destroy);
}
/**
* vmw_event_fence_action_seq_passed
@ -836,18 +793,16 @@ static void vmw_event_fence_action_delivered(struct drm_pending_event *e)
* This function is called when the seqno of the fence where @action is
* attached has passed. It queues the event on the submitter's event list.
* This function is always called from atomic context, and may be called
* from irq context. It ups a refcount reflecting that we now have two
* destructors.
* from irq context.
*/
static void vmw_event_fence_action_seq_passed(struct vmw_fence_action *action)
{
struct vmw_event_fence_action *eaction =
container_of(action, struct vmw_event_fence_action, action);
struct drm_device *dev = eaction->dev;
struct drm_file *file_priv = eaction->e.file_priv;
struct drm_file *file_priv = eaction->event->file_priv;
unsigned long irq_flags;
kref_get(&eaction->kref);
spin_lock_irqsave(&dev->event_lock, irq_flags);
if (likely(eaction->tv_sec != NULL)) {
@ -858,7 +813,7 @@ static void vmw_event_fence_action_seq_passed(struct vmw_fence_action *action)
*eaction->tv_usec = tv.tv_usec;
}
list_add_tail(&eaction->e.link, &file_priv->event_list);
list_add_tail(&eaction->event->link, &file_priv->event_list);
wake_up_all(&file_priv->event_wait);
spin_unlock_irqrestore(&dev->event_lock, irq_flags);
}
@ -878,7 +833,7 @@ static void vmw_event_fence_action_cleanup(struct vmw_fence_action *action)
container_of(action, struct vmw_event_fence_action, action);
vmw_fence_obj_unreference(&eaction->fence);
kref_put(&eaction->kref, vmw_event_fence_action_destroy);
kfree(eaction);
}
@ -946,39 +901,22 @@ void vmw_fence_obj_add_action(struct vmw_fence_obj *fence,
* an error code, the caller needs to free that object.
*/
int vmw_event_fence_action_create(struct drm_file *file_priv,
struct vmw_fence_obj *fence,
struct drm_event *event,
uint32_t *tv_sec,
uint32_t *tv_usec,
bool interruptible)
int vmw_event_fence_action_queue(struct drm_file *file_priv,
struct vmw_fence_obj *fence,
struct drm_pending_event *event,
uint32_t *tv_sec,
uint32_t *tv_usec,
bool interruptible)
{
struct vmw_event_fence_action *eaction;
struct ttm_mem_global *mem_glob =
vmw_mem_glob(fence->fman->dev_priv);
struct vmw_fence_manager *fman = fence->fman;
uint32_t size = fman->event_fence_action_size +
ttm_round_pot(event->length);
int ret;
/*
* Account for internal structure size as well as the
* event size itself.
*/
ret = ttm_mem_global_alloc(mem_glob, size, false, interruptible);
if (unlikely(ret != 0))
return ret;
eaction = kzalloc(sizeof(*eaction), GFP_KERNEL);
if (unlikely(eaction == NULL)) {
ttm_mem_global_free(mem_glob, size);
if (unlikely(eaction == NULL))
return -ENOMEM;
}
eaction->e.event = event;
eaction->e.file_priv = file_priv;
eaction->e.destroy = vmw_event_fence_action_delivered;
eaction->event = event;
eaction->action.seq_passed = vmw_event_fence_action_seq_passed;
eaction->action.cleanup = vmw_event_fence_action_cleanup;
@ -986,16 +924,85 @@ int vmw_event_fence_action_create(struct drm_file *file_priv,
eaction->fence = vmw_fence_obj_reference(fence);
eaction->dev = fman->dev_priv->dev;
eaction->size = size;
eaction->tv_sec = tv_sec;
eaction->tv_usec = tv_usec;
kref_init(&eaction->kref);
vmw_fence_obj_add_action(fence, &eaction->action);
return 0;
}
struct vmw_event_fence_pending {
struct drm_pending_event base;
struct drm_vmw_event_fence event;
};
int vmw_event_fence_action_create(struct drm_file *file_priv,
struct vmw_fence_obj *fence,
uint32_t flags,
uint64_t user_data,
bool interruptible)
{
struct vmw_event_fence_pending *event;
struct drm_device *dev = fence->fman->dev_priv->dev;
unsigned long irq_flags;
int ret;
spin_lock_irqsave(&dev->event_lock, irq_flags);
ret = (file_priv->event_space < sizeof(event->event)) ? -EBUSY : 0;
if (likely(ret == 0))
file_priv->event_space -= sizeof(event->event);
spin_unlock_irqrestore(&dev->event_lock, irq_flags);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to allocate event space for this file.\n");
goto out_no_space;
}
event = kzalloc(sizeof(event->event), GFP_KERNEL);
if (unlikely(event == NULL)) {
DRM_ERROR("Failed to allocate an event.\n");
ret = -ENOMEM;
goto out_no_event;
}
event->event.base.type = DRM_VMW_EVENT_FENCE_SIGNALED;
event->event.base.length = sizeof(*event);
event->event.user_data = user_data;
event->base.event = &event->event.base;
event->base.file_priv = file_priv;
event->base.destroy = (void (*) (struct drm_pending_event *)) kfree;
if (flags & DRM_VMW_FE_FLAG_REQ_TIME)
ret = vmw_event_fence_action_queue(file_priv, fence,
&event->base,
&event->event.tv_sec,
&event->event.tv_usec,
interruptible);
else
ret = vmw_event_fence_action_queue(file_priv, fence,
&event->base,
NULL,
NULL,
interruptible);
if (ret != 0)
goto out_no_queue;
out_no_queue:
event->base.destroy(&event->base);
out_no_event:
spin_lock_irqsave(&dev->event_lock, irq_flags);
file_priv->event_space += sizeof(*event);
spin_unlock_irqrestore(&dev->event_lock, irq_flags);
out_no_space:
return ret;
}
int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
@ -1008,8 +1015,6 @@ int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
(struct drm_vmw_fence_rep __user *)(unsigned long)
arg->fence_rep;
uint32_t handle;
unsigned long irq_flags;
struct drm_vmw_event_fence *event;
int ret;
/*
@ -1062,59 +1067,28 @@ int vmw_fence_event_ioctl(struct drm_device *dev, void *data,
BUG_ON(fence == NULL);
spin_lock_irqsave(&dev->event_lock, irq_flags);
ret = (file_priv->event_space < sizeof(*event)) ? -EBUSY : 0;
if (likely(ret == 0))
file_priv->event_space -= sizeof(*event);
spin_unlock_irqrestore(&dev->event_lock, irq_flags);
if (unlikely(ret != 0)) {
DRM_ERROR("Failed to allocate event space for this file.\n");
goto out_no_event_space;
}
event = kzalloc(sizeof(*event), GFP_KERNEL);
if (unlikely(event == NULL)) {
DRM_ERROR("Failed to allocate an event.\n");
goto out_no_event;
}
event->base.type = DRM_VMW_EVENT_FENCE_SIGNALED;
event->base.length = sizeof(*event);
event->user_data = arg->user_data;
if (arg->flags & DRM_VMW_FE_FLAG_REQ_TIME)
ret = vmw_event_fence_action_create(file_priv, fence,
&event->base,
&event->tv_sec,
&event->tv_usec,
arg->flags,
arg->user_data,
true);
else
ret = vmw_event_fence_action_create(file_priv, fence,
&event->base,
NULL,
NULL,
arg->flags,
arg->user_data,
true);
if (unlikely(ret != 0)) {
if (ret != -ERESTARTSYS)
DRM_ERROR("Failed to attach event to fence.\n");
goto out_no_attach;
goto out_no_create;
}
vmw_execbuf_copy_fence_user(dev_priv, vmw_fp, 0, user_fence_rep, fence,
handle);
vmw_fence_obj_unreference(&fence);
return 0;
out_no_attach:
kfree(event);
out_no_event:
spin_lock_irqsave(&dev->event_lock, irq_flags);
file_priv->event_space += sizeof(*event);
spin_unlock_irqrestore(&dev->event_lock, irq_flags);
out_no_event_space:
out_no_create:
if (user_fence_rep != NULL)
ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
handle, TTM_REF_USAGE);