drm/nouveau/disp/gv100-: expose capabilities class

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

drivers/gpu/drm/nouveau/include/nvif/class.h

@@ -89,6 +89,8 @@
 #define GV100_DISP                                    /* cl5070.h */ 0x0000c370
 #define TU102_DISP                                    /* cl5070.h */ 0x0000c570
 
+#define GV100_DISP_CAPS                                              0x0000c373
+
 #define NV31_MPEG                                                    0x00003174
 #define G82_MPEG                                                     0x00008274
 

drivers/gpu/drm/nouveau/nvkm/engine/disp/Kbuild

@@ -74,6 +74,8 @@ nvkm-y += nvkm/engine/disp/rootgp102.o
 nvkm-y += nvkm/engine/disp/rootgv100.o
 nvkm-y += nvkm/engine/disp/roottu102.o
 
+nvkm-y += nvkm/engine/disp/capsgv100.o
+
 nvkm-y += nvkm/engine/disp/channv50.o
 nvkm-y += nvkm/engine/disp/changf119.o
 nvkm-y += nvkm/engine/disp/changv100.o

drivers/gpu/drm/nouveau/nvkm/engine/disp/capsgv100.c

+/*
+ * Copyright 2020 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.
+ */
+#define gv100_disp_caps(p) container_of((p), struct gv100_disp_caps, object)
+#include "rootnv50.h"
+
+struct gv100_disp_caps {
+	struct nvkm_object object;
+	struct nv50_disp *disp;
+};
+
+static int
+gv100_disp_caps_map(struct nvkm_object *object, void *argv, u32 argc,
+		    enum nvkm_object_map *type, u64 *addr, u64 *size)
+{
+	struct gv100_disp_caps *caps = gv100_disp_caps(object);
+	struct nvkm_device *device = caps->disp->base.engine.subdev.device;
+	*type = NVKM_OBJECT_MAP_IO;
+	*addr = 0x640000 + device->func->resource_addr(device, 0);
+	*size = 0x1000;
+	return 0;
+}
+
+static const struct nvkm_object_func
+gv100_disp_caps = {
+	.map = gv100_disp_caps_map,
+};
+
+int
+gv100_disp_caps_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
+		    struct nv50_disp *disp, struct nvkm_object **pobject)
+{
+	struct gv100_disp_caps *caps;
+
+	if (!(caps = kzalloc(sizeof(*caps), GFP_KERNEL)))
+		return -ENOMEM;
+	*pobject = &caps->object;
+
+	nvkm_object_ctor(&gv100_disp_caps, oclass, &caps->object);
+	caps->disp = disp;
+	return 0;
+}

drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgv100.c

@@ -27,6 +27,7 @@
 static const struct nv50_disp_root_func
 gv100_disp_root = {
 	.user = {
+		{{-1,-1,GV100_DISP_CAPS                }, gv100_disp_caps_new },
 		{{0,0,GV100_DISP_CURSOR                }, gv100_disp_curs_new },
 		{{0,0,GV100_DISP_WINDOW_IMM_CHANNEL_DMA}, gv100_disp_wimm_new },
 		{{0,0,GV100_DISP_CORE_CHANNEL_DMA      }, gv100_disp_core_new },

drivers/gpu/drm/nouveau/nvkm/engine/disp/rootnv50.h

@@ -24,6 +24,9 @@ int  nv50_disp_root_new_(const struct nv50_disp_root_func *, struct nvkm_disp *,
 			 const struct nvkm_oclass *, void *data, u32 size,
 			 struct nvkm_object **);
 
+int gv100_disp_caps_new(const struct nvkm_oclass *, void *, u32,
+			struct nv50_disp *, struct nvkm_object **);
+
 extern const struct nvkm_disp_oclass nv50_disp_root_oclass;
 extern const struct nvkm_disp_oclass g84_disp_root_oclass;
 extern const struct nvkm_disp_oclass g94_disp_root_oclass;

drivers/gpu/drm/nouveau/nvkm/engine/disp/roottu102.c

@@ -27,6 +27,7 @@
 static const struct nv50_disp_root_func
 tu102_disp_root = {
 	.user = {
+		{{-1,-1,GV100_DISP_CAPS                }, gv100_disp_caps_new },
 		{{0,0,TU102_DISP_CURSOR                }, gv100_disp_curs_new },
 		{{0,0,TU102_DISP_WINDOW_IMM_CHANNEL_DMA}, gv100_disp_wimm_new },
 		{{0,0,TU102_DISP_CORE_CHANNEL_DMA      }, gv100_disp_core_new },