int drm_irq_by_busid(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_irq_busid_t __user *argp = (void __user *)arg;
- drm_irq_busid_t p;
+ struct drm_file *priv = filp->private_data;
+ struct drm_device *dev = priv->head->dev;
+ struct drm_irq_busid __user *argp = (void __user *)arg;
+ struct drm_irq_busid p;
if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
return -EINVAL;
* \c drm_driver_irq_preinstall() and \c drm_driver_irq_postinstall() functions
* before and after the installation.
*/
-static int drm_irq_install(drm_device_t * dev)
+static int drm_irq_install(struct drm_device * dev)
{
int ret;
unsigned long sh_flags = 0;
spin_lock_init(&dev->vbl_lock);
- INIT_LIST_HEAD(&dev->vbl_sigs.head);
+ INIT_LIST_HEAD(&dev->vbl_sigs);
+ INIT_LIST_HEAD(&dev->vbl_sigs2);
dev->vbl_pending = 0;
}
*
* Calls the driver's \c drm_driver_irq_uninstall() function, and stops the irq.
*/
-int drm_irq_uninstall(drm_device_t * dev)
+int drm_irq_uninstall(struct drm_device * dev)
{
int irq_enabled;
free_irq(dev->irq, dev);
+ dev->locked_tasklet_func = NULL;
+
return 0;
}
int drm_control(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_control_t ctl;
+ struct drm_file *priv = filp->private_data;
+ struct drm_device *dev = priv->head->dev;
+ struct drm_control ctl;
/* if we haven't irq we fallback for compatibility reasons - this used to be a separate function in drm_dma.h */
- if (copy_from_user(&ctl, (drm_control_t __user *) arg, sizeof(ctl)))
+ if (copy_from_user(&ctl, (struct drm_control __user *) arg, sizeof(ctl)))
return -EFAULT;
switch (ctl.func) {
*/
int drm_wait_vblank(DRM_IOCTL_ARGS)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_wait_vblank_t __user *argp = (void __user *)data;
- drm_wait_vblank_t vblwait;
+ struct drm_file *priv = filp->private_data;
+ struct drm_device *dev = priv->head->dev;
+ union drm_wait_vblank __user *argp = (void __user *)data;
+ union drm_wait_vblank vblwait;
struct timeval now;
int ret = 0;
- unsigned int flags;
-
- if (!drm_core_check_feature(dev, DRIVER_IRQ_VBL))
- return -EINVAL;
+ unsigned int flags, seq;
if (!dev->irq)
return -EINVAL;
if (copy_from_user(&vblwait, argp, sizeof(vblwait)))
return -EFAULT;
- switch (vblwait.request.type & ~_DRM_VBLANK_FLAGS_MASK) {
+ if (vblwait.request.type &
+ ~(_DRM_VBLANK_TYPES_MASK | _DRM_VBLANK_FLAGS_MASK)) {
+ DRM_ERROR("Unsupported type value 0x%x, supported mask 0x%x\n",
+ vblwait.request.type,
+ (_DRM_VBLANK_TYPES_MASK | _DRM_VBLANK_FLAGS_MASK));
+ return -EINVAL;
+ }
+
+ flags = vblwait.request.type & _DRM_VBLANK_FLAGS_MASK;
+
+ if (!drm_core_check_feature(dev, (flags & _DRM_VBLANK_SECONDARY) ?
+ DRIVER_IRQ_VBL2 : DRIVER_IRQ_VBL))
+ return -EINVAL;
+
+ seq = atomic_read((flags & _DRM_VBLANK_SECONDARY) ? &dev->vbl_received2
+ : &dev->vbl_received);
+
+ switch (vblwait.request.type & _DRM_VBLANK_TYPES_MASK) {
case _DRM_VBLANK_RELATIVE:
- vblwait.request.sequence += atomic_read(&dev->vbl_received);
+ vblwait.request.sequence += seq;
vblwait.request.type &= ~_DRM_VBLANK_RELATIVE;
case _DRM_VBLANK_ABSOLUTE:
break;
return -EINVAL;
}
- flags = vblwait.request.type & _DRM_VBLANK_FLAGS_MASK;
+ if ((flags & _DRM_VBLANK_NEXTONMISS) &&
+ (seq - vblwait.request.sequence) <= (1<<23)) {
+ vblwait.request.sequence = seq + 1;
+ }
if (flags & _DRM_VBLANK_SIGNAL) {
unsigned long irqflags;
- drm_vbl_sig_t *vbl_sig;
-
- vblwait.reply.sequence = atomic_read(&dev->vbl_received);
+ struct list_head *vbl_sigs = (flags & _DRM_VBLANK_SECONDARY)
+ ? &dev->vbl_sigs2 : &dev->vbl_sigs;
+ struct drm_vbl_sig *vbl_sig;
spin_lock_irqsave(&dev->vbl_lock, irqflags);
* for the same vblank sequence number; nothing to be done in
* that case
*/
- list_for_each_entry(vbl_sig, &dev->vbl_sigs.head, head) {
+ list_for_each_entry(vbl_sig, vbl_sigs, head) {
if (vbl_sig->sequence == vblwait.request.sequence
&& vbl_sig->info.si_signo == vblwait.request.signal
&& vbl_sig->task == current) {
spin_unlock_irqrestore(&dev->vbl_lock,
irqflags);
+ vblwait.reply.sequence = seq;
goto done;
}
}
if (!
(vbl_sig =
- drm_alloc(sizeof(drm_vbl_sig_t), DRM_MEM_DRIVER))) {
+ drm_alloc(sizeof(struct drm_vbl_sig), DRM_MEM_DRIVER))) {
return -ENOMEM;
}
spin_lock_irqsave(&dev->vbl_lock, irqflags);
- list_add_tail((struct list_head *)vbl_sig, &dev->vbl_sigs.head);
+ list_add_tail(&vbl_sig->head, vbl_sigs);
spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
+
+ vblwait.reply.sequence = seq;
} else {
- if (dev->driver->vblank_wait)
+ if (flags & _DRM_VBLANK_SECONDARY) {
+ if (dev->driver->vblank_wait2)
+ ret = dev->driver->vblank_wait2(dev, &vblwait.request.sequence);
+ } else if (dev->driver->vblank_wait)
ret =
dev->driver->vblank_wait(dev,
&vblwait.request.sequence);
*
* If a signal is not requested, then calls vblank_wait().
*/
-void drm_vbl_send_signals(drm_device_t * dev)
+void drm_vbl_send_signals(struct drm_device * dev)
{
- struct list_head *list, *tmp;
- drm_vbl_sig_t *vbl_sig;
- unsigned int vbl_seq = atomic_read(&dev->vbl_received);
unsigned long flags;
+ int i;
spin_lock_irqsave(&dev->vbl_lock, flags);
- list_for_each_safe(list, tmp, &dev->vbl_sigs.head) {
- vbl_sig = list_entry(list, drm_vbl_sig_t, head);
- if ((vbl_seq - vbl_sig->sequence) <= (1 << 23)) {
- vbl_sig->info.si_code = vbl_seq;
- send_sig_info(vbl_sig->info.si_signo, &vbl_sig->info,
- vbl_sig->task);
+ for (i = 0; i < 2; i++) {
+ struct drm_vbl_sig *vbl_sig, *tmp;
+ struct list_head *vbl_sigs = i ? &dev->vbl_sigs2 : &dev->vbl_sigs;
+ unsigned int vbl_seq = atomic_read(i ? &dev->vbl_received2 :
+ &dev->vbl_received);
- list_del(list);
+ list_for_each_entry_safe(vbl_sig, tmp, vbl_sigs, head) {
+ if ((vbl_seq - vbl_sig->sequence) <= (1 << 23)) {
+ vbl_sig->info.si_code = vbl_seq;
+ send_sig_info(vbl_sig->info.si_signo,
+ &vbl_sig->info, vbl_sig->task);
- drm_free(vbl_sig, sizeof(*vbl_sig), DRM_MEM_DRIVER);
+ list_del(&vbl_sig->head);
- dev->vbl_pending--;
+ drm_free(vbl_sig, sizeof(*vbl_sig),
+ DRM_MEM_DRIVER);
+
+ dev->vbl_pending--;
+ }
}
}
}
EXPORT_SYMBOL(drm_vbl_send_signals);
+
+/**
+ * Tasklet wrapper function.
+ *
+ * \param data DRM device in disguise.
+ *
+ * Attempts to grab the HW lock and calls the driver callback on success. On
+ * failure, leave the lock marked as contended so the callback can be called
+ * from drm_unlock().
+ */
+static void drm_locked_tasklet_func(unsigned long data)
+{
+ struct drm_device *dev = (struct drm_device *)data;
+ unsigned long irqflags;
+
+ spin_lock_irqsave(&dev->tasklet_lock, irqflags);
+
+ if (!dev->locked_tasklet_func ||
+ !drm_lock_take(&dev->lock,
+ DRM_KERNEL_CONTEXT)) {
+ spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
+ return;
+ }
+
+ dev->lock.lock_time = jiffies;
+ atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
+
+ dev->locked_tasklet_func(dev);
+
+ drm_lock_free(&dev->lock,
+ DRM_KERNEL_CONTEXT);
+
+ dev->locked_tasklet_func = NULL;
+
+ spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
+}
+
+/**
+ * Schedule a tasklet to call back a driver hook with the HW lock held.
+ *
+ * \param dev DRM device.
+ * \param func Driver callback.
+ *
+ * This is intended for triggering actions that require the HW lock from an
+ * interrupt handler. The lock will be grabbed ASAP after the interrupt handler
+ * completes. Note that the callback may be called from interrupt or process
+ * context, it must not make any assumptions about this. Also, the HW lock will
+ * be held with the kernel context or any client context.
+ */
+void drm_locked_tasklet(struct drm_device *dev, void (*func)(struct drm_device *))
+{
+ unsigned long irqflags;
+ static DECLARE_TASKLET(drm_tasklet, drm_locked_tasklet_func, 0);
+
+ if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ) ||
+ test_bit(TASKLET_STATE_SCHED, &drm_tasklet.state))
+ return;
+
+ spin_lock_irqsave(&dev->tasklet_lock, irqflags);
+
+ if (dev->locked_tasklet_func) {
+ spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
+ return;
+ }
+
+ dev->locked_tasklet_func = func;
+
+ spin_unlock_irqrestore(&dev->tasklet_lock, irqflags);
+
+ drm_tasklet.data = (unsigned long)dev;
+
+ tasklet_hi_schedule(&drm_tasklet);
+}
+EXPORT_SYMBOL(drm_locked_tasklet);
projects / linux-2.6 / blobdiff