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path: root/drivers/gpu/drm/drm_fops.c
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Diffstat (limited to 'drivers/gpu/drm/drm_fops.c')
-rw-r--r--drivers/gpu/drm/drm_fops.c115
1 files changed, 20 insertions, 95 deletions
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index 021fe5d11df..ed7bc68f7e8 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -38,10 +38,11 @@
#include <linux/poll.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include "drm_legacy.h"
+#include "drm_internal.h"
/* from BKL pushdown */
DEFINE_MUTEX(drm_global_mutex);
-EXPORT_SYMBOL(drm_global_mutex);
static int drm_open_helper(struct file *filp, struct drm_minor *minor);
@@ -112,55 +113,12 @@ err_undo:
EXPORT_SYMBOL(drm_open);
/**
- * File \c open operation.
- *
- * \param inode device inode.
- * \param filp file pointer.
- *
- * Puts the dev->fops corresponding to the device minor number into
- * \p filp, call the \c open method, and restore the file operations.
- */
-int drm_stub_open(struct inode *inode, struct file *filp)
-{
- struct drm_device *dev;
- struct drm_minor *minor;
- int err = -ENODEV;
- const struct file_operations *new_fops;
-
- DRM_DEBUG("\n");
-
- mutex_lock(&drm_global_mutex);
- minor = drm_minor_acquire(iminor(inode));
- if (IS_ERR(minor))
- goto out_unlock;
-
- dev = minor->dev;
- new_fops = fops_get(dev->driver->fops);
- if (!new_fops)
- goto out_release;
-
- replace_fops(filp, new_fops);
- if (filp->f_op->open)
- err = filp->f_op->open(inode, filp);
-
-out_release:
- drm_minor_release(minor);
-out_unlock:
- mutex_unlock(&drm_global_mutex);
- return err;
-}
-
-/**
* Check whether DRI will run on this CPU.
*
* \return non-zero if the DRI will run on this CPU, or zero otherwise.
*/
static int drm_cpu_valid(void)
{
-#if defined(__i386__)
- if (boot_cpu_data.x86 == 3)
- return 0; /* No cmpxchg on a 386 */
-#endif
#if defined(__sparc__) && !defined(__sparc_v9__)
return 0; /* No cmpxchg before v9 sparc. */
#endif
@@ -203,8 +161,7 @@ static int drm_open_helper(struct file *filp, struct drm_minor *minor)
priv->minor = minor;
/* for compatibility root is always authenticated */
- priv->always_authenticated = capable(CAP_SYS_ADMIN);
- priv->authenticated = priv->always_authenticated;
+ priv->authenticated = capable(CAP_SYS_ADMIN);
priv->lock_count = 0;
INIT_LIST_HEAD(&priv->lhead);
@@ -214,7 +171,7 @@ static int drm_open_helper(struct file *filp, struct drm_minor *minor)
init_waitqueue_head(&priv->event_wait);
priv->event_space = 4096; /* set aside 4k for event buffer */
- if (dev->driver->driver_features & DRIVER_GEM)
+ if (drm_core_check_feature(dev, DRIVER_GEM))
drm_gem_open(dev, priv);
if (drm_core_check_feature(dev, DRIVER_PRIME))
@@ -299,7 +256,7 @@ out_close:
out_prime_destroy:
if (drm_core_check_feature(dev, DRIVER_PRIME))
drm_prime_destroy_file_private(&priv->prime);
- if (dev->driver->driver_features & DRIVER_GEM)
+ if (drm_core_check_feature(dev, DRIVER_GEM))
drm_gem_release(dev, priv);
put_pid(priv->pid);
kfree(priv);
@@ -311,11 +268,11 @@ static void drm_master_release(struct drm_device *dev, struct file *filp)
{
struct drm_file *file_priv = filp->private_data;
- if (drm_i_have_hw_lock(dev, file_priv)) {
+ if (drm_legacy_i_have_hw_lock(dev, file_priv)) {
DRM_DEBUG("File %p released, freeing lock for context %d\n",
filp, _DRM_LOCKING_CONTEXT(file_priv->master->lock.hw_lock->lock));
- drm_lock_free(&file_priv->master->lock,
- _DRM_LOCKING_CONTEXT(file_priv->master->lock.hw_lock->lock));
+ drm_legacy_lock_free(&file_priv->master->lock,
+ _DRM_LOCKING_CONTEXT(file_priv->master->lock.hw_lock->lock));
}
}
@@ -373,8 +330,6 @@ static void drm_legacy_dev_reinit(struct drm_device *dev)
*/
int drm_lastclose(struct drm_device * dev)
{
- struct drm_vma_entry *vma, *vma_temp;
-
DRM_DEBUG("\n");
if (dev->driver->lastclose)
@@ -389,13 +344,7 @@ int drm_lastclose(struct drm_device * dev)
drm_agp_clear(dev);
drm_legacy_sg_cleanup(dev);
-
- /* Clear vma list (only built for debugging) */
- list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
- list_del(&vma->head);
- kfree(vma);
- }
-
+ drm_legacy_vma_flush(dev);
drm_legacy_dma_takedown(dev);
mutex_unlock(&dev->struct_mutex);
@@ -429,6 +378,10 @@ int drm_release(struct inode *inode, struct file *filp)
DRM_DEBUG("open_count = %d\n", dev->open_count);
+ mutex_lock(&dev->struct_mutex);
+ list_del(&file_priv->lhead);
+ mutex_unlock(&dev->struct_mutex);
+
if (dev->driver->preclose)
dev->driver->preclose(dev, file_priv);
@@ -451,54 +404,28 @@ int drm_release(struct inode *inode, struct file *filp)
drm_master_release(dev, filp);
if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
- drm_core_reclaim_buffers(dev, file_priv);
+ drm_legacy_reclaim_buffers(dev, file_priv);
drm_events_release(file_priv);
- if (dev->driver->driver_features & DRIVER_MODESET)
+ if (drm_core_check_feature(dev, DRIVER_MODESET))
drm_fb_release(file_priv);
- if (dev->driver->driver_features & DRIVER_GEM)
+ if (drm_core_check_feature(dev, DRIVER_GEM))
drm_gem_release(dev, file_priv);
- mutex_lock(&dev->ctxlist_mutex);
- if (!list_empty(&dev->ctxlist)) {
- struct drm_ctx_list *pos, *n;
-
- list_for_each_entry_safe(pos, n, &dev->ctxlist, head) {
- if (pos->tag == file_priv &&
- pos->handle != DRM_KERNEL_CONTEXT) {
- if (dev->driver->context_dtor)
- dev->driver->context_dtor(dev,
- pos->handle);
-
- drm_ctxbitmap_free(dev, pos->handle);
-
- list_del(&pos->head);
- kfree(pos);
- }
- }
- }
- mutex_unlock(&dev->ctxlist_mutex);
+ drm_legacy_ctxbitmap_flush(dev, file_priv);
mutex_lock(&dev->master_mutex);
if (file_priv->is_master) {
struct drm_master *master = file_priv->master;
- struct drm_file *temp;
-
- mutex_lock(&dev->struct_mutex);
- list_for_each_entry(temp, &dev->filelist, lhead) {
- if ((temp->master == file_priv->master) &&
- (temp != file_priv))
- temp->authenticated = temp->always_authenticated;
- }
/**
* Since the master is disappearing, so is the
* possibility to lock.
*/
-
+ mutex_lock(&dev->struct_mutex);
if (master->lock.hw_lock) {
if (dev->sigdata.lock == master->lock.hw_lock)
dev->sigdata.lock = NULL;
@@ -522,10 +449,6 @@ int drm_release(struct inode *inode, struct file *filp)
file_priv->is_master = 0;
mutex_unlock(&dev->master_mutex);
- mutex_lock(&dev->struct_mutex);
- list_del(&file_priv->lhead);
- mutex_unlock(&dev->struct_mutex);
-
if (dev->driver->postclose)
dev->driver->postclose(dev, file_priv);
@@ -533,6 +456,8 @@ int drm_release(struct inode *inode, struct file *filp)
if (drm_core_check_feature(dev, DRIVER_PRIME))
drm_prime_destroy_file_private(&file_priv->prime);
+ WARN_ON(!list_empty(&file_priv->event_list));
+
put_pid(file_priv->pid);
kfree(file_priv);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-04-03 15:11:52 +0000