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authorvehemens <vehemens@verizon.net>2008-09-02 13:56:35 -0700
committerRobert Noland <rnoland@2hip.net>2008-09-05 12:42:41 -0400
commit31709aa2be54877c45ca382bf370b41dbaf5c2ec (patch)
treeb23a951b34a02646b50e6ae317d4b0e7e0780205 /bsd-core/drm_lock.c
parent76dd74c64ef9b92025e76dd256e0641ff6fce0f4 (diff)
Reorder lock functions like linux.
Signed-off-by: Robert Noland <rnoland@2hip.net>
Diffstat (limited to 'bsd-core/drm_lock.c')
-rw-r--r--bsd-core/drm_lock.c128
1 files changed, 64 insertions, 64 deletions
diff --git a/bsd-core/drm_lock.c b/bsd-core/drm_lock.c
index 523d0409..fe66eca0 100644
--- a/bsd-core/drm_lock.c
+++ b/bsd-core/drm_lock.c
@@ -49,70 +49,6 @@
#include "drmP.h"
-int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context)
-{
- unsigned int old, new;
-
- do {
- old = *lock;
- if (old & _DRM_LOCK_HELD)
- new = old | _DRM_LOCK_CONT;
- else
- new = context | _DRM_LOCK_HELD;
- } while (!atomic_cmpset_int(lock, old, new));
-
- if (_DRM_LOCKING_CONTEXT(old) == context) {
- if (old & _DRM_LOCK_HELD) {
- if (context != DRM_KERNEL_CONTEXT) {
- DRM_ERROR("%d holds heavyweight lock\n",
- context);
- }
- return 0;
- }
- }
- if (new == (context | _DRM_LOCK_HELD)) {
- /* Have lock */
- return 1;
- }
- return 0;
-}
-
-/* This takes a lock forcibly and hands it to context. Should ONLY be used
- inside *_unlock to give lock to kernel before calling *_dma_schedule. */
-int drm_lock_transfer(struct drm_device *dev,
- __volatile__ unsigned int *lock, unsigned int context)
-{
- unsigned int old, new;
-
- dev->lock.file_priv = NULL;
- do {
- old = *lock;
- new = context | _DRM_LOCK_HELD;
- } while (!atomic_cmpset_int(lock, old, new));
-
- return 1;
-}
-
-int drm_lock_free(struct drm_device *dev,
- __volatile__ unsigned int *lock, unsigned int context)
-{
- unsigned int old, new;
-
- dev->lock.file_priv = NULL;
- do {
- old = *lock;
- new = 0;
- } while (!atomic_cmpset_int(lock, old, new));
-
- if (_DRM_LOCK_IS_HELD(old) && _DRM_LOCKING_CONTEXT(old) != context) {
- DRM_ERROR("%d freed heavyweight lock held by %d\n",
- context, _DRM_LOCKING_CONTEXT(old));
- return 1;
- }
- DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
- return 0;
-}
-
int drm_lock(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
struct drm_lock *lock = data;
@@ -202,3 +138,67 @@ int drm_unlock(struct drm_device *dev, void *data, struct drm_file *file_priv)
return 0;
}
+
+int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context)
+{
+ unsigned int old, new;
+
+ do {
+ old = *lock;
+ if (old & _DRM_LOCK_HELD)
+ new = old | _DRM_LOCK_CONT;
+ else
+ new = context | _DRM_LOCK_HELD;
+ } while (!atomic_cmpset_int(lock, old, new));
+
+ if (_DRM_LOCKING_CONTEXT(old) == context) {
+ if (old & _DRM_LOCK_HELD) {
+ if (context != DRM_KERNEL_CONTEXT) {
+ DRM_ERROR("%d holds heavyweight lock\n",
+ context);
+ }
+ return 0;
+ }
+ }
+ if (new == (context | _DRM_LOCK_HELD)) {
+ /* Have lock */
+ return 1;
+ }
+ return 0;
+}
+
+/* This takes a lock forcibly and hands it to context. Should ONLY be used
+ inside *_unlock to give lock to kernel before calling *_dma_schedule. */
+int drm_lock_transfer(struct drm_device *dev,
+ __volatile__ unsigned int *lock, unsigned int context)
+{
+ unsigned int old, new;
+
+ dev->lock.file_priv = NULL;
+ do {
+ old = *lock;
+ new = context | _DRM_LOCK_HELD;
+ } while (!atomic_cmpset_int(lock, old, new));
+
+ return 1;
+}
+
+int drm_lock_free(struct drm_device *dev,
+ __volatile__ unsigned int *lock, unsigned int context)
+{
+ unsigned int old, new;
+
+ dev->lock.file_priv = NULL;
+ do {
+ old = *lock;
+ new = 0;
+ } while (!atomic_cmpset_int(lock, old, new));
+
+ if (_DRM_LOCK_IS_HELD(old) && _DRM_LOCKING_CONTEXT(old) != context) {
+ DRM_ERROR("%d freed heavyweight lock held by %d\n",
+ context, _DRM_LOCKING_CONTEXT(old));
+ return 1;
+ }
+ DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
+ return 0;
+}