From a6535c8db4614376ce8ecb7d889b92db066a96cc Mon Sep 17 00:00:00 2001
From: Thomas Hellstrom <thomas-at-tungstengraphics-dot-com>
Date: Tue, 22 Aug 2006 10:44:09 +0200
Subject: Add a fence object class field for future use (For example VSYNC
 fence objects)

---
 libdrm/xf86drm.c       | 10 +++++++++-
 libdrm/xf86drm.h       |  4 +++-
 linux-core/drmP.h      |  1 +
 linux-core/drm_fence.c |  2 ++
 shared-core/drm.h      |  1 +
 5 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c
index 6302db3a..a2a2e28c 100644
--- a/libdrm/xf86drm.c
+++ b/libdrm/xf86drm.c
@@ -2237,18 +2237,21 @@ int drmCommandWriteRead(int fd, unsigned long drmCommandIndex, void *data,
     return 0;
 }
 
-int drmFenceCreate(int fd, int shareable, unsigned type, int emit, 
+int drmFenceCreate(int fd, int shareable, int class,unsigned type, 
+		   int emit, 
 		   drmFence *fence)
 {
     drm_fence_arg_t arg;
     
     arg.type = type;
+    arg.class = class;
     arg.flags = (shareable) ? DRM_FENCE_FLAG_SHAREABLE : 0;
     arg.flags |= (emit) ? DRM_FENCE_FLAG_EMIT : 0;
     arg.op = drm_fence_create;
     if (ioctl(fd, DRM_IOCTL_FENCE, &arg))
 	return -errno;
     fence->handle = arg.handle;
+    fence->class = arg.class;
     fence->type = arg.type;
     fence->signaled = 0;
     return 0;
@@ -2274,6 +2277,7 @@ int drmFenceReference(int fd, unsigned handle, drmFence *fence)
     if (ioctl(fd, DRM_IOCTL_FENCE, &arg))
 	return -errno;
     fence->handle = arg.handle;
+    fence->class = arg.class;
     fence->type = arg.type;
     fence->signaled = arg.signaled;
     return 0;
@@ -2299,6 +2303,7 @@ int drmFenceFlush(int fd, drmFence *fence, unsigned flush_type)
     arg.op = drm_fence_flush;
     if (ioctl(fd, DRM_IOCTL_FENCE, &arg))
 	return -errno;
+    fence->class = arg.class;
     fence->type = arg.type;
     fence->signaled = arg.signaled;
     return 0;
@@ -2312,6 +2317,7 @@ int drmFenceSignaled(int fd, drmFence *fence)
     arg.op = drm_fence_signaled;
     if (ioctl(fd, DRM_IOCTL_FENCE, &arg))
 	return -errno;
+    fence->class = arg.class;
     fence->type = arg.type;
     fence->signaled = arg.signaled;
     return 0;
@@ -2326,6 +2332,7 @@ int drmFenceEmit(int fd, drmFence *fence, unsigned emit_type)
     arg.op = drm_fence_emit;
     if (ioctl(fd, DRM_IOCTL_FENCE, &arg))
 	return -errno;
+    fence->class = arg.class;
     fence->type = arg.type;
     fence->signaled = arg.signaled;
     return 0;
@@ -2349,6 +2356,7 @@ int drmFenceWait(int fd, drmFence *fence, unsigned flush_type,
     if (ret)
 	return -errno;
 
+    fence->class = arg.class;
     fence->type = arg.type;
     fence->signaled = arg.signaled;
     return 0;
diff --git a/libdrm/xf86drm.h b/libdrm/xf86drm.h
index 0e037daa..78730785 100644
--- a/libdrm/xf86drm.h
+++ b/libdrm/xf86drm.h
@@ -282,6 +282,7 @@ typedef struct _drmSetVersion {
 
 typedef struct _drmFence{
         unsigned handle;
+        int class;
         unsigned type; 
         unsigned signaled;
 } drmFence;
@@ -603,7 +604,8 @@ extern int           drmWaitVBlank(int fd, drmVBlankPtr vbl);
 
 /* Fencing */
 
-extern int           drmFenceCreate(int fd, int shareable, unsigned type, int emit, 
+extern int           drmFenceCreate(int fd, int shareable, int class,
+				    unsigned type, int emit, 
 				    drmFence *fence);
 extern int           drmFenceDestroy(int fd, const drmFence *fence);
 extern int           drmFenceReference(int fd, unsigned handle, drmFence *fence);
diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index 8f8f324e..5a4a37fc 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -963,6 +963,7 @@ typedef struct drm_fence_object{
 	 */
 
 	struct list_head ring;
+        int class;
 	volatile uint32_t type;
 	volatile uint32_t signaled;
 	uint32_t sequence;
diff --git a/linux-core/drm_fence.c b/linux-core/drm_fence.c
index fc27c576..cfcda2b2 100644
--- a/linux-core/drm_fence.c
+++ b/linux-core/drm_fence.c
@@ -397,6 +397,7 @@ int drm_fence_object_init(drm_device_t * dev, uint32_t type, int emit,
 
 	write_lock_irqsave(&fm->lock, flags);
 	INIT_LIST_HEAD(&fence->ring);
+        fence->class = 0;
 	fence->type = type;
 	fence->flush_mask = 0;
 	fence->submitted_flush = 0;
@@ -577,6 +578,7 @@ int drm_fence_ioctl(DRM_IOCTL_ARGS)
 		return -EINVAL;
 	}
 	read_lock_irqsave(&fm->lock, flags);
+	arg.class = fence->class;
 	arg.type = fence->type;
 	arg.signaled = fence->signaled;
 	read_unlock_irqrestore(&fm->lock, flags);
diff --git a/shared-core/drm.h b/shared-core/drm.h
index b588b15c..cd2b1907 100644
--- a/shared-core/drm.h
+++ b/shared-core/drm.h
@@ -639,6 +639,7 @@ typedef struct drm_set_version {
 
 typedef struct drm_fence_arg {
 	unsigned handle;
+        int class;
 	unsigned type;
 	unsigned flags;
 	unsigned signaled;
-- 
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