Replace NO_MOVE/NO_EVICT flags to buffer objects with an ioctl to set pinning.

This cleans up the create/validate interfaces for this very uncommon path, and
makes pinned object creation much easier to use for the X Server.

2 files changed, 25 insertions, 1 deletions

diff --git a/libdrm/xf86drm.c b/libdrm/xf86drm.c
index 8cee4fbc..63242bce 100644
--- a/libdrm/xf86drm.c
+++ b/libdrm/xf86drm.c
@@ -2975,7 +2975,30 @@ int drmBOWaitIdle(int fd, drmBO *buf, unsigned hint)
     }
     return 0;
 }
-	
+
+int drmBOSetPin(int fd, drmBO *buf, int pin)
+{
+    struct drm_bo_set_pin_arg arg;
+    struct drm_bo_set_pin_req *req = &arg.d.req;
+    struct drm_bo_info_rep *rep = &arg.d.rep;
+    int ret = 0;
+
+    memset(&arg, 0, sizeof(arg));
+    req->handle = buf->handle;
+    req->pin = pin;
+
+    do {
+	ret = ioctl(fd, DRM_IOCTL_BO_SET_PIN, &arg);
+    } while (ret && errno == EAGAIN);
+
+    if (ret)
+	return -errno;
+
+    drmBOCopyReply(rep, buf);
+
+    return 0;
+}
+
 int drmBOBusy(int fd, drmBO *buf, int *busy)
 {
     if (!(buf->flags & DRM_BO_FLAG_SHAREABLE) &&
diff --git a/libdrm/xf86mm.h b/libdrm/xf86mm.h
index d1e0b28f..d86644ca 100644
--- a/libdrm/xf86mm.h
+++ b/libdrm/xf86mm.h
@@ -201,6 +201,7 @@ extern int drmAddValidateItem(drmBOList *list, drmBO *buf, unsigned flags,
 extern int drmBOValidateList(int fd, drmBOList *list);
 extern int drmBOFenceList(int fd, drmBOList *list, unsigned fenceHandle);
 extern int drmBOWaitIdle(int fd, drmBO *buf, unsigned hint);
+int drmBOSetPin(int fd, drmBO *buf, int pin);
 
 /*
  * Initialization functions.