drm/nouveau/vfn: add stub subdev for dev_func

Initially for NV_USERMODE class, and Turing/Ampere's new interrupt tree.

v2. fixup for ga103 early merge

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

6 files changed, 164 insertions, 0 deletions

diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/Kbuild
new file mode 100644
index 000000000000..21c975a6b206
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/Kbuild
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: MIT
+nvkm-y += nvkm/subdev/vfn/base.o
+nvkm-y += nvkm/subdev/vfn/gv100.o
+nvkm-y += nvkm/subdev/vfn/tu102.o
+nvkm-y += nvkm/subdev/vfn/ga100.o
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/base.c
new file mode 100644
index 000000000000..682ca3ed725b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/base.c
@@ -0,0 +1,48 @@
+/*
+ * Copyright 2021 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.
+ */
+#include "priv.h"
+
+static void *
+nvkm_vfn_dtor(struct nvkm_subdev *subdev)
+{
+	return nvkm_vfn(subdev);
+}
+
+static const struct nvkm_subdev_func
+nvkm_vfn = {
+	.dtor = nvkm_vfn_dtor,
+};
+
+int
+nvkm_vfn_new_(const struct nvkm_vfn_func *func, struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, u32 addr, struct nvkm_vfn **pvfn)
+{
+	struct nvkm_vfn *vfn;
+
+	if (!(vfn = *pvfn = kzalloc(sizeof(*vfn), GFP_KERNEL)))
+		return -ENOMEM;
+
+	nvkm_subdev_ctor(&nvkm_vfn, device, type, inst, &vfn->subdev);
+	vfn->func = func;
+	vfn->addr.priv = addr;
+	return 0;
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/ga100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/ga100.c
new file mode 100644
index 000000000000..979402dff659
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/ga100.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2021 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.
+ */
+#include "priv.h"
+
+static const struct nvkm_vfn_func
+ga100_vfn = {
+};
+
+int
+ga100_vfn_new(struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn)
+{
+	return nvkm_vfn_new_(&ga100_vfn, device, type, inst, 0xb80000, pvfn);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/gv100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/gv100.c
new file mode 100644
index 000000000000..83dd79bddd86
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/gv100.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2021 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.
+ */
+#include "priv.h"
+
+static const struct nvkm_vfn_func
+gv100_vfn = {
+};
+
+int
+gv100_vfn_new(struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn)
+{
+	return nvkm_vfn_new_(&gv100_vfn, device, type, inst, 0, pvfn);
+}
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/priv.h b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/priv.h
new file mode 100644
index 000000000000..174817c76bf9
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/priv.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_VFN_PRIV_H__
+#define __NVKM_VFN_PRIV_H__
+#define nvkm_vfn(p) container_of((p), struct nvkm_vfn, subdev)
+#include <subdev/vfn.h>
+
+struct nvkm_vfn_func {
+};
+
+int nvkm_vfn_new_(const struct nvkm_vfn_func *, struct nvkm_device *, enum nvkm_subdev_type, int,
+		  u32 addr, struct nvkm_vfn **);
+#endif
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/tu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/tu102.c
new file mode 100644
index 000000000000..999e50f5c36b
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/vfn/tu102.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2021 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.
+ */
+#include "priv.h"
+
+static const struct nvkm_vfn_func
+tu102_vfn = {
+};
+
+int
+tu102_vfn_new(struct nvkm_device *device,
+	      enum nvkm_subdev_type type, int inst, struct nvkm_vfn **pvfn)
+{
+	return nvkm_vfn_new_(&tu102_vfn, device, type, inst, 0xb80000, pvfn);
+}