[Intel-gfx] [PATCH 04/14] drm: Move master functions into drm_auth.c
Daniel Vetter
daniel.vetter at ffwll.ch
Tue Jun 14 18:50:59 UTC 2016
For modern drivers pretty much the only thing drm_master does is
handling authentication for the primary/legacy drm_minor node. Instead
of having it all over drm files, move it all together into drm_auth.c.
This patch just does code-motion, follow up patches will also extract
the master logic from file open&release paths.
Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
---
drivers/gpu/drm/drm_auth.c | 163 +++++++++++++++++++++++++++++++++++++++++
drivers/gpu/drm/drm_drv.c | 108 ---------------------------
drivers/gpu/drm/drm_fops.c | 54 --------------
drivers/gpu/drm/drm_internal.h | 12 ++-
include/drm/drmP.h | 1 -
5 files changed, 168 insertions(+), 170 deletions(-)
diff --git a/drivers/gpu/drm/drm_auth.c b/drivers/gpu/drm/drm_auth.c
index 50d0baa06db0..1d314ae13560 100644
--- a/drivers/gpu/drm/drm_auth.c
+++ b/drivers/gpu/drm/drm_auth.c
@@ -30,6 +30,7 @@
#include <drm/drmP.h>
#include "drm_internal.h"
+#include "drm_legacy.h"
/**
* drm_getmagic - Get unique magic of a client
@@ -91,3 +92,165 @@ int drm_authmagic(struct drm_device *dev, void *data,
return file ? 0 : -EINVAL;
}
+
+static struct drm_master *drm_master_create(struct drm_device *dev)
+{
+ struct drm_master *master;
+
+ master = kzalloc(sizeof(*master), GFP_KERNEL);
+ if (!master)
+ return NULL;
+
+ kref_init(&master->refcount);
+ spin_lock_init(&master->lock.spinlock);
+ init_waitqueue_head(&master->lock.lock_queue);
+ idr_init(&master->magic_map);
+ master->dev = dev;
+
+ return master;
+}
+
+/*
+ * drm_new_set_master - Allocate a new master object and become master for the
+ * associated master realm.
+ *
+ * @dev: The associated device.
+ * @fpriv: File private identifying the client.
+ *
+ * This function must be called with dev::struct_mutex held.
+ * Returns negative error code on failure. Zero on success.
+ */
+int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv)
+{
+ struct drm_master *old_master;
+ int ret;
+
+ lockdep_assert_held_once(&dev->master_mutex);
+
+ /* create a new master */
+ fpriv->minor->master = drm_master_create(fpriv->minor->dev);
+ if (!fpriv->minor->master)
+ return -ENOMEM;
+
+ /* take another reference for the copy in the local file priv */
+ old_master = fpriv->master;
+ fpriv->master = drm_master_get(fpriv->minor->master);
+
+ if (dev->driver->master_create) {
+ ret = dev->driver->master_create(dev, fpriv->master);
+ if (ret)
+ goto out_err;
+ }
+ if (dev->driver->master_set) {
+ ret = dev->driver->master_set(dev, fpriv, true);
+ if (ret)
+ goto out_err;
+ }
+
+ fpriv->is_master = 1;
+ fpriv->allowed_master = 1;
+ fpriv->authenticated = 1;
+ if (old_master)
+ drm_master_put(&old_master);
+
+ return 0;
+
+out_err:
+ /* drop both references and restore old master on failure */
+ drm_master_put(&fpriv->minor->master);
+ drm_master_put(&fpriv->master);
+ fpriv->master = old_master;
+
+ return ret;
+}
+
+int drm_setmaster_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ int ret = 0;
+
+ mutex_lock(&dev->master_mutex);
+ if (file_priv->is_master)
+ goto out_unlock;
+
+ if (file_priv->minor->master) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ if (!file_priv->master) {
+ ret = -EINVAL;
+ goto out_unlock;
+ }
+
+ if (!file_priv->allowed_master) {
+ ret = drm_new_set_master(dev, file_priv);
+ goto out_unlock;
+ }
+
+ file_priv->minor->master = drm_master_get(file_priv->master);
+ file_priv->is_master = 1;
+ if (dev->driver->master_set) {
+ ret = dev->driver->master_set(dev, file_priv, false);
+ if (unlikely(ret != 0)) {
+ file_priv->is_master = 0;
+ drm_master_put(&file_priv->minor->master);
+ }
+ }
+
+out_unlock:
+ mutex_unlock(&dev->master_mutex);
+ return ret;
+}
+
+int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ int ret = -EINVAL;
+
+ mutex_lock(&dev->master_mutex);
+ if (!file_priv->is_master)
+ goto out_unlock;
+
+ if (!file_priv->minor->master)
+ goto out_unlock;
+
+ ret = 0;
+ if (dev->driver->master_drop)
+ dev->driver->master_drop(dev, file_priv, false);
+ drm_master_put(&file_priv->minor->master);
+ file_priv->is_master = 0;
+
+out_unlock:
+ mutex_unlock(&dev->master_mutex);
+ return ret;
+}
+
+struct drm_master *drm_master_get(struct drm_master *master)
+{
+ kref_get(&master->refcount);
+ return master;
+}
+EXPORT_SYMBOL(drm_master_get);
+
+static void drm_master_destroy(struct kref *kref)
+{
+ struct drm_master *master = container_of(kref, struct drm_master, refcount);
+ struct drm_device *dev = master->dev;
+
+ if (dev->driver->master_destroy)
+ dev->driver->master_destroy(dev, master);
+
+ drm_legacy_master_rmmaps(dev, master);
+
+ idr_destroy(&master->magic_map);
+ kfree(master->unique);
+ kfree(master);
+}
+
+void drm_master_put(struct drm_master **master)
+{
+ kref_put(&(*master)->refcount, drm_master_destroy);
+ *master = NULL;
+}
+EXPORT_SYMBOL(drm_master_put);
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 3c01a16bbb77..8e67b4f4573e 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -93,114 +93,6 @@ void drm_ut_debug_printk(const char *function_name, const char *format, ...)
}
EXPORT_SYMBOL(drm_ut_debug_printk);
-struct drm_master *drm_master_create(struct drm_device *dev)
-{
- struct drm_master *master;
-
- master = kzalloc(sizeof(*master), GFP_KERNEL);
- if (!master)
- return NULL;
-
- kref_init(&master->refcount);
- spin_lock_init(&master->lock.spinlock);
- init_waitqueue_head(&master->lock.lock_queue);
- idr_init(&master->magic_map);
- master->dev = dev;
-
- return master;
-}
-
-struct drm_master *drm_master_get(struct drm_master *master)
-{
- kref_get(&master->refcount);
- return master;
-}
-EXPORT_SYMBOL(drm_master_get);
-
-static void drm_master_destroy(struct kref *kref)
-{
- struct drm_master *master = container_of(kref, struct drm_master, refcount);
- struct drm_device *dev = master->dev;
-
- if (dev->driver->master_destroy)
- dev->driver->master_destroy(dev, master);
-
- drm_legacy_master_rmmaps(dev, master);
-
- idr_destroy(&master->magic_map);
- kfree(master->unique);
- kfree(master);
-}
-
-void drm_master_put(struct drm_master **master)
-{
- kref_put(&(*master)->refcount, drm_master_destroy);
- *master = NULL;
-}
-EXPORT_SYMBOL(drm_master_put);
-
-int drm_setmaster_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- int ret = 0;
-
- mutex_lock(&dev->master_mutex);
- if (file_priv->is_master)
- goto out_unlock;
-
- if (file_priv->minor->master) {
- ret = -EINVAL;
- goto out_unlock;
- }
-
- if (!file_priv->master) {
- ret = -EINVAL;
- goto out_unlock;
- }
-
- if (!file_priv->allowed_master) {
- ret = drm_new_set_master(dev, file_priv);
- goto out_unlock;
- }
-
- file_priv->minor->master = drm_master_get(file_priv->master);
- file_priv->is_master = 1;
- if (dev->driver->master_set) {
- ret = dev->driver->master_set(dev, file_priv, false);
- if (unlikely(ret != 0)) {
- file_priv->is_master = 0;
- drm_master_put(&file_priv->minor->master);
- }
- }
-
-out_unlock:
- mutex_unlock(&dev->master_mutex);
- return ret;
-}
-
-int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv)
-{
- int ret = -EINVAL;
-
- mutex_lock(&dev->master_mutex);
- if (!file_priv->is_master)
- goto out_unlock;
-
- if (!file_priv->minor->master)
- goto out_unlock;
-
- ret = 0;
- if (dev->driver->master_drop)
- dev->driver->master_drop(dev, file_priv, false);
- drm_master_put(&file_priv->minor->master);
- file_priv->is_master = 0;
-
-out_unlock:
- mutex_unlock(&dev->master_mutex);
- return ret;
-}
-
/*
* DRM Minors
* A DRM device can provide several char-dev interfaces on the DRM-Major. Each
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index bfbf1381f55d..50b3de990aee 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -168,60 +168,6 @@ static int drm_cpu_valid(void)
}
/*
- * drm_new_set_master - Allocate a new master object and become master for the
- * associated master realm.
- *
- * @dev: The associated device.
- * @fpriv: File private identifying the client.
- *
- * This function must be called with dev::struct_mutex held.
- * Returns negative error code on failure. Zero on success.
- */
-int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv)
-{
- struct drm_master *old_master;
- int ret;
-
- lockdep_assert_held_once(&dev->master_mutex);
-
- /* create a new master */
- fpriv->minor->master = drm_master_create(fpriv->minor->dev);
- if (!fpriv->minor->master)
- return -ENOMEM;
-
- /* take another reference for the copy in the local file priv */
- old_master = fpriv->master;
- fpriv->master = drm_master_get(fpriv->minor->master);
-
- if (dev->driver->master_create) {
- ret = dev->driver->master_create(dev, fpriv->master);
- if (ret)
- goto out_err;
- }
- if (dev->driver->master_set) {
- ret = dev->driver->master_set(dev, fpriv, true);
- if (ret)
- goto out_err;
- }
-
- fpriv->is_master = 1;
- fpriv->allowed_master = 1;
- fpriv->authenticated = 1;
- if (old_master)
- drm_master_put(&old_master);
-
- return 0;
-
-out_err:
- /* drop both references and restore old master on failure */
- drm_master_put(&fpriv->minor->master);
- drm_master_put(&fpriv->master);
- fpriv->master = old_master;
-
- return ret;
-}
-
-/*
* Called whenever a process opens /dev/drm.
*
* \param filp file pointer.
diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index f5c1d17fa51f..d29d426f633f 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -62,6 +62,11 @@ int drm_getmagic(struct drm_device *dev, void *data,
struct drm_file *file_priv);
int drm_authmagic(struct drm_device *dev, void *data,
struct drm_file *file_priv);
+int drm_setmaster_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file_priv);
+int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv);
/* drm_sysfs.c */
extern struct class *drm_class;
@@ -87,13 +92,6 @@ int drm_gem_open_ioctl(struct drm_device *dev, void *data,
void drm_gem_open(struct drm_device *dev, struct drm_file *file_private);
void drm_gem_release(struct drm_device *dev, struct drm_file *file_private);
-/* drm_drv.c */
-int drm_setmaster_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
-int drm_dropmaster_ioctl(struct drm_device *dev, void *data,
- struct drm_file *file_priv);
-struct drm_master *drm_master_create(struct drm_device *dev);
-
/* drm_debugfs.c */
#if defined(CONFIG_DEBUG_FS)
int drm_debugfs_init(struct drm_minor *minor, int minor_id,
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 17dcbea4f259..e8788d7b29dc 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -928,7 +928,6 @@ int drm_open(struct inode *inode, struct file *filp);
ssize_t drm_read(struct file *filp, char __user *buffer,
size_t count, loff_t *offset);
int drm_release(struct inode *inode, struct file *filp);
-int drm_new_set_master(struct drm_device *dev, struct drm_file *fpriv);
unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
int drm_event_reserve_init_locked(struct drm_device *dev,
struct drm_file *file_priv,
--
2.8.1
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