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Diffstat (limited to 'linux-core/drm_lock.c')
-rw-r--r--linux-core/drm_lock.c86
1 files changed, 38 insertions, 48 deletions
diff --git a/linux-core/drm_lock.c b/linux-core/drm_lock.c
index f02df36b..b8e4a5d9 100644
--- a/linux-core/drm_lock.c
+++ b/linux-core/drm_lock.c
@@ -41,39 +41,33 @@ static int drm_notifier(void *priv);
* Lock ioctl.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument, pointing to a drm_lock structure.
* \return zero on success or negative number on failure.
*
* Add the current task to the lock wait queue, and attempt to take to lock.
*/
-int drm_lock(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
DECLARE_WAITQUEUE(entry, current);
- drm_lock_t lock;
+ struct drm_lock *lock = data;
int ret = 0;
- ++priv->lock_count;
+ ++file_priv->lock_count;
- if (copy_from_user(&lock, (drm_lock_t __user *) arg, sizeof(lock)))
- return -EFAULT;
-
- if (lock.context == DRM_KERNEL_CONTEXT) {
+ if (lock->context == DRM_KERNEL_CONTEXT) {
DRM_ERROR("Process %d using kernel context %d\n",
- current->pid, lock.context);
+ current->pid, lock->context);
return -EINVAL;
}
DRM_DEBUG("%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n",
- lock.context, current->pid,
- dev->lock.hw_lock->lock, lock.flags);
+ lock->context, current->pid,
+ dev->lock.hw_lock->lock, lock->flags);
if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE))
- if (lock.context < 0)
+ if (lock->context < 0)
return -EINVAL;
add_wait_queue(&dev->lock.lock_queue, &entry);
@@ -87,8 +81,8 @@ int drm_lock(struct inode *inode, struct file *filp,
ret = -EINTR;
break;
}
- if (drm_lock_take(&dev->lock, lock.context)) {
- dev->lock.filp = filp;
+ if (drm_lock_take(&dev->lock, lock->context)) {
+ dev->lock.file_priv = file_priv;
dev->lock.lock_time = jiffies;
atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
break; /* Got lock */
@@ -107,7 +101,8 @@ int drm_lock(struct inode *inode, struct file *filp,
__set_current_state(TASK_RUNNING);
remove_wait_queue(&dev->lock.lock_queue, &entry);
- DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" );
+ DRM_DEBUG("%d %s\n", lock->context,
+ ret ? "interrupted" : "has lock");
if (ret) return ret;
sigemptyset(&dev->sigmask);
@@ -115,24 +110,26 @@ int drm_lock(struct inode *inode, struct file *filp,
sigaddset(&dev->sigmask, SIGTSTP);
sigaddset(&dev->sigmask, SIGTTIN);
sigaddset(&dev->sigmask, SIGTTOU);
- dev->sigdata.context = lock.context;
+ dev->sigdata.context = lock->context;
dev->sigdata.lock = dev->lock.hw_lock;
block_all_signals(drm_notifier, &dev->sigdata, &dev->sigmask);
- if (dev->driver->dma_ready && (lock.flags & _DRM_LOCK_READY))
+ if (dev->driver->dma_ready && (lock->flags & _DRM_LOCK_READY))
dev->driver->dma_ready(dev);
- if (dev->driver->dma_quiescent && (lock.flags & _DRM_LOCK_QUIESCENT)) {
+ if (dev->driver->dma_quiescent && (lock->flags & _DRM_LOCK_QUIESCENT))
+ {
if (dev->driver->dma_quiescent(dev)) {
- DRM_DEBUG( "%d waiting for DMA quiescent\n", lock.context);
- return DRM_ERR(EBUSY);
+ DRM_DEBUG("%d waiting for DMA quiescent\n",
+ lock->context);
+ return -EBUSY;
}
}
if (dev->driver->kernel_context_switch &&
- dev->last_context != lock.context) {
+ dev->last_context != lock->context) {
dev->driver->kernel_context_switch(dev, dev->last_context,
- lock.context);
+ lock->context);
}
return 0;
@@ -142,27 +139,21 @@ int drm_lock(struct inode *inode, struct file *filp,
* Unlock ioctl.
*
* \param inode device inode.
- * \param filp file pointer.
+ * \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument, pointing to a drm_lock structure.
* \return zero on success or negative number on failure.
*
* Transfer and free the lock.
*/
-int drm_unlock(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->head->dev;
- drm_lock_t lock;
+ struct drm_lock *lock = data;
unsigned long irqflags;
- if (copy_from_user(&lock, (drm_lock_t __user *) arg, sizeof(lock)))
- return -EFAULT;
-
- if (lock.context == DRM_KERNEL_CONTEXT) {
+ if (lock->context == DRM_KERNEL_CONTEXT) {
DRM_ERROR("Process %d using kernel context %d\n",
- current->pid, lock.context);
+ current->pid, lock->context);
return -EINVAL;
}
@@ -184,7 +175,7 @@ int drm_unlock(struct inode *inode, struct file *filp,
if (dev->driver->kernel_context_switch_unlock)
dev->driver->kernel_context_switch_unlock(dev);
else {
- if (drm_lock_free(&dev->lock,lock.context)) {
+ if (drm_lock_free(&dev->lock,lock->context)) {
/* FIXME: Should really bail out here. */
}
}
@@ -202,7 +193,7 @@ int drm_unlock(struct inode *inode, struct file *filp,
*
* Attempt to mark the lock as held by the given context, via the \p cmpxchg instruction.
*/
-int drm_lock_take(drm_lock_data_t *lock_data,
+int drm_lock_take(struct drm_lock_data *lock_data,
unsigned int context)
{
unsigned int old, new, prev;
@@ -252,13 +243,13 @@ int drm_lock_take(drm_lock_data_t *lock_data,
* Resets the lock file pointer.
* Marks the lock as held by the given context, via the \p cmpxchg instruction.
*/
-static int drm_lock_transfer(drm_lock_data_t *lock_data,
+static int drm_lock_transfer(struct drm_lock_data *lock_data,
unsigned int context)
{
unsigned int old, new, prev;
volatile unsigned int *lock = &lock_data->hw_lock->lock;
- lock_data->filp = NULL;
+ lock_data->file_priv = NULL;
do {
old = *lock;
new = context | _DRM_LOCK_HELD;
@@ -278,7 +269,7 @@ static int drm_lock_transfer(drm_lock_data_t *lock_data,
* Marks the lock as not held, via the \p cmpxchg instruction. Wakes any task
* waiting on the lock queue.
*/
-int drm_lock_free(drm_lock_data_t *lock_data, unsigned int context)
+int drm_lock_free(struct drm_lock_data *lock_data, unsigned int context)
{
unsigned int old, new, prev;
volatile unsigned int *lock = &lock_data->hw_lock->lock;
@@ -320,7 +311,7 @@ int drm_lock_free(drm_lock_data_t *lock_data, unsigned int context)
*/
static int drm_notifier(void *priv)
{
- drm_sigdata_t *s = (drm_sigdata_t *) priv;
+ struct drm_sigdata *s = (struct drm_sigdata *) priv;
unsigned int old, new, prev;
/* Allow signal delivery if lock isn't held */
@@ -351,7 +342,7 @@ static int drm_notifier(void *priv)
* having to worry about starvation.
*/
-void drm_idlelock_take(drm_lock_data_t *lock_data)
+void drm_idlelock_take(struct drm_lock_data *lock_data)
{
int ret = 0;
@@ -370,7 +361,7 @@ void drm_idlelock_take(drm_lock_data_t *lock_data)
}
EXPORT_SYMBOL(drm_idlelock_take);
-void drm_idlelock_release(drm_lock_data_t *lock_data)
+void drm_idlelock_release(struct drm_lock_data *lock_data)
{
unsigned int old, prev;
volatile unsigned int *lock = &lock_data->hw_lock->lock;
@@ -391,13 +382,12 @@ void drm_idlelock_release(drm_lock_data_t *lock_data)
EXPORT_SYMBOL(drm_idlelock_release);
-int drm_i_have_hw_lock(struct file *filp)
+int drm_i_have_hw_lock(struct drm_device *dev, struct drm_file *file_priv)
{
- DRM_DEVICE;
- return (priv->lock_count && dev->lock.hw_lock &&
+ return (file_priv->lock_count && dev->lock.hw_lock &&
_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) &&
- dev->lock.filp == filp);
+ dev->lock.file_priv == file_priv);
}
EXPORT_SYMBOL(drm_i_have_hw_lock);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 10:09:40 +0000