X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fnouveau%2Fnvkm%2Fsubdev%2Finstmem%2Fbase.c;fp=kernel%2Fdrivers%2Fgpu%2Fdrm%2Fnouveau%2Fnvkm%2Fsubdev%2Finstmem%2Fbase.c;h=d16358cc6cbba50ff5e5e9848349ae928107d152;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git

diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c
new file mode 100644
index 000000000..d16358cc6
--- /dev/null
+++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/base.c
@@ -0,0 +1,146 @@
+/*
+ * Copyright 2012 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
+ */
+#include "priv.h"
+
+#include <core/engine.h>
+
+/******************************************************************************
+ * instmem object base implementation
+ *****************************************************************************/
+
+void
+_nvkm_instobj_dtor(struct nvkm_object *object)
+{
+	struct nvkm_instmem *imem = nvkm_instmem(object);
+	struct nvkm_instobj *iobj = (void *)object;
+
+	mutex_lock(&nv_subdev(imem)->mutex);
+	list_del(&iobj->head);
+	mutex_unlock(&nv_subdev(imem)->mutex);
+
+	return nvkm_object_destroy(&iobj->base);
+}
+
+int
+nvkm_instobj_create_(struct nvkm_object *parent, struct nvkm_object *engine,
+		     struct nvkm_oclass *oclass, int length, void **pobject)
+{
+	struct nvkm_instmem *imem = nvkm_instmem(parent);
+	struct nvkm_instobj *iobj;
+	int ret;
+
+	ret = nvkm_object_create_(parent, engine, oclass, NV_MEMOBJ_CLASS,
+				  length, pobject);
+	iobj = *pobject;
+	if (ret)
+		return ret;
+
+	mutex_lock(&imem->base.mutex);
+	list_add(&iobj->head, &imem->list);
+	mutex_unlock(&imem->base.mutex);
+	return 0;
+}
+
+/******************************************************************************
+ * instmem subdev base implementation
+ *****************************************************************************/
+
+static int
+nvkm_instmem_alloc(struct nvkm_instmem *imem, struct nvkm_object *parent,
+		   u32 size, u32 align, struct nvkm_object **pobject)
+{
+	struct nvkm_instmem_impl *impl = (void *)imem->base.object.oclass;
+	struct nvkm_instobj_args args = { .size = size, .align = align };
+	return nvkm_object_ctor(parent, &parent->engine->subdev.object,
+				impl->instobj, &args, sizeof(args), pobject);
+}
+
+int
+_nvkm_instmem_fini(struct nvkm_object *object, bool suspend)
+{
+	struct nvkm_instmem *imem = (void *)object;
+	struct nvkm_instobj *iobj;
+	int i, ret = 0;
+
+	if (suspend) {
+		mutex_lock(&imem->base.mutex);
+		list_for_each_entry(iobj, &imem->list, head) {
+			iobj->suspend = vmalloc(iobj->size);
+			if (!iobj->suspend) {
+				ret = -ENOMEM;
+				break;
+			}
+
+			for (i = 0; i < iobj->size; i += 4)
+				iobj->suspend[i / 4] = nv_ro32(iobj, i);
+		}
+		mutex_unlock(&imem->base.mutex);
+		if (ret)
+			return ret;
+	}
+
+	return nvkm_subdev_fini(&imem->base, suspend);
+}
+
+int
+_nvkm_instmem_init(struct nvkm_object *object)
+{
+	struct nvkm_instmem *imem = (void *)object;
+	struct nvkm_instobj *iobj;
+	int ret, i;
+
+	ret = nvkm_subdev_init(&imem->base);
+	if (ret)
+		return ret;
+
+	mutex_lock(&imem->base.mutex);
+	list_for_each_entry(iobj, &imem->list, head) {
+		if (iobj->suspend) {
+			for (i = 0; i < iobj->size; i += 4)
+				nv_wo32(iobj, i, iobj->suspend[i / 4]);
+			vfree(iobj->suspend);
+			iobj->suspend = NULL;
+		}
+	}
+	mutex_unlock(&imem->base.mutex);
+	return 0;
+}
+
+int
+nvkm_instmem_create_(struct nvkm_object *parent, struct nvkm_object *engine,
+		     struct nvkm_oclass *oclass, int length, void **pobject)
+{
+	struct nvkm_instmem *imem;
+	int ret;
+
+	ret = nvkm_subdev_create_(parent, engine, oclass, 0, "INSTMEM",
+				  "instmem", length, pobject);
+	imem = *pobject;
+	if (ret)
+		return ret;
+
+	INIT_LIST_HEAD(&imem->list);
+	imem->alloc = nvkm_instmem_alloc;
+	return 0;
+}