drm/nouveau/fb/ram: Use Kepler implementation on Maxwell

This enables memory reclocking on Maxwell. Sadly without a PMU firmware it
is useless for gm20x gpus.
Signed-off-by: NKarol Herbst <karolherbst@gmail.com>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/nvkm/subdev/fb/ram.h

@@ -24,6 +24,7 @@ int  gf100_ram_ctor(const struct nvkm_ram_func *, struct nvkm_fb *,
 int  gf100_ram_get(struct nvkm_ram *, u64, u32, u32, u32, struct nvkm_mem **);
 void gf100_ram_put(struct nvkm_ram *, struct nvkm_mem **);
 
+int  gk104_ram_ctor(struct nvkm_fb *, struct nvkm_ram **, u32);
 int  gk104_ram_init(struct nvkm_ram *ram);
 
 /* RAM type-specific MR calculation routines */

drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgk104.c

@@ -1537,6 +1537,12 @@ gk104_ram_func = {
 
 int
 gk104_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
+{
+	return gk104_ram_ctor(fb, pram, 0x022554);
+}
+
+int
+gk104_ram_ctor(struct nvkm_fb *fb, struct nvkm_ram **pram, u32 maskaddr)
 {
 	struct nvkm_subdev *subdev = &fb->subdev;
 	struct nvkm_device *device = subdev->device;
@@ -1552,7 +1558,7 @@ gk104_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
 		return -ENOMEM;
 	*pram = &ram->base;
 
-	ret = gf100_ram_ctor(&gk104_ram_func, fb, 0x022554, &ram->base);
+	ret = gf100_ram_ctor(&gk104_ram_func, fb, maskaddr, &ram->base);
 	if (ret)
 		return ret;
 

drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgm107.c

@@ -23,18 +23,8 @@
  */
 #include "ram.h"
 
-static const struct nvkm_ram_func
-gm107_ram_func = {
-	.init = gk104_ram_init,
-	.get = gf100_ram_get,
-	.put = gf100_ram_put,
-};
-
 int
 gm107_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram)
 {
-	if (!(*pram = kzalloc(sizeof(**pram), GFP_KERNEL)))
-		return -ENOMEM;
-
-	return gf100_ram_ctor(&gm107_ram_func, fb, 0x021c14, *pram);
+	return gk104_ram_ctor(fb, pram, 0x021c14);
 }