1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.c b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.c
new file mode 100644
index 000000000000..a475ea56795c
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/ior.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2017 Red Hat Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include "ior.h"
+
+static const char *
+nvkm_ior_name[] = {
+	[DAC] = "DAC",
+	[SOR] = "SOR",
+	[PIOR] = "PIOR",
+};
+
+struct nvkm_ior *
+nvkm_ior_find(struct nvkm_disp *disp, enum nvkm_ior_type type, int id)
+{
+	struct nvkm_ior *ior;
+	list_for_each_entry(ior, &disp->ior, head) {
+		if (ior->type == type && (id < 0 || ior->id == id))
+			return ior;
+	}
+	return NULL;
+}
+
+void
+nvkm_ior_del(struct nvkm_ior **pior)
+{
+	struct nvkm_ior *ior = *pior;
+	if (ior) {
+		IOR_DBG(ior, "dtor");
+		list_del(&ior->head);
+		kfree(*pior);
+		*pior = NULL;
+	}
+}
+
+int
+nvkm_ior_new_(const struct nvkm_ior_func *func, struct nvkm_disp *disp,
+	      enum nvkm_ior_type type, int id)
+{
+	struct nvkm_ior *ior;
+	if (!(ior = kzalloc(sizeof(*ior), GFP_KERNEL)))
+		return -ENOMEM;
+	ior->func = func;
+	ior->disp = disp;
+	ior->type = type;
+	ior->id = id;
+	snprintf(ior->name, sizeof(ior->name), "%s-%d",
+		 nvkm_ior_name[ior->type], ior->id);
+	list_add_tail(&ior->head, &disp->ior);
+	IOR_DBG(ior, "ctor");
+	return 0;
+}