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authorThomas Hellstrom <thellstrom@vmware.com>2009-12-02 18:15:25 +0000
committerDave Airlie <airlied@redhat.com>2009-12-04 08:55:46 +1000
commit862302ffe422378a5213f558fc5cdf62c37050a9 (patch)
tree13557874eb479023e5a64f12990416045ea60818 /include/drm/drmP.h
parent9340d8cfeacd16cef1cbe94527f7baaed7640669 (diff)
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drm: Add support for drm master_[set|drop] callbacks.
The vmwgfx driver has a per master rw lock around TTM, to guarantee mutual exclusion when needed. This is typically when all evictable buffers are evicted due to 1) vt switch 2) master switch 3) suspend / resume. In the multi-master case, on master switch the new master takes the previously active master lock in write mode, and then evicts all buffers. Any clients to previous masters will then block on that lock when trying to validate a buffer. fbdev also acts as a virtual master wrt this. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Jakob Bornecrantz <jakob@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/drm/drmP.h')
-rw-r--r--include/drm/drmP.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 1b72a526ba6..770772c014a 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -774,6 +774,15 @@ struct drm_driver {
/* Master routines */
int (*master_create)(struct drm_device *dev, struct drm_master *master);
void (*master_destroy)(struct drm_device *dev, struct drm_master *master);
+ /**
+ * master_set is called whenever the minor master is set.
+ * master_drop is called whenever the minor master is dropped.
+ */
+
+ int (*master_set)(struct drm_device *dev, struct drm_file *file_priv,
+ bool from_open);
+ void (*master_drop)(struct drm_device *dev, struct drm_file *file_priv,
+ bool from_release);
int (*proc_init)(struct drm_minor *minor);
void (*proc_cleanup)(struct drm_minor *minor);