drm/nouveau/fb: finalise big page size selection in constructor

MMU will need to know this during its constructor, so we can't delay
deciding this until init-time.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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

@@ -135,8 +135,13 @@ nvkm_fb_init(struct nvkm_subdev *subdev)
 
 	if (fb->func->init)
 		fb->func->init(fb);
-	if (fb->func->init_page)
-		fb->func->init_page(fb);
+
+	if (fb->func->init_page) {
+		ret = fb->func->init_page(fb);
+		if (WARN_ON(ret))
+			return ret;
+	}
+
 	if (fb->func->init_unkn)
 		fb->func->init_unkn(fb);
 	return 0;
@@ -176,7 +181,8 @@ nvkm_fb_ctor(const struct nvkm_fb_func *func, struct nvkm_device *device,
 	nvkm_subdev_ctor(&nvkm_fb, device, index, &fb->subdev);
 	fb->func = func;
 	fb->tile.regions = fb->func->tile.regions;
-	fb->page = nvkm_longopt(device->cfgopt, "NvFbBigPage", 0);
+	fb->page = nvkm_longopt(device->cfgopt, "NvFbBigPage",
+				fb->func->default_bigpage);
 }
 
 int

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.c

@@ -80,20 +80,17 @@ gf100_fb_oneinit(struct nvkm_fb *base)
 	return 0;
 }
 
-void
+int
 gf100_fb_init_page(struct nvkm_fb *fb)
 {
 	struct nvkm_device *device = fb->subdev.device;
 	switch (fb->page) {
-	case 16:
-		nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001);
-		break;
-	case 17:
+	case 16: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000001); break;
+	case 17: nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000); break;
 	default:
-		nvkm_mask(device, 0x100c80, 0x00000001, 0x00000000);
-		fb->page = 17;
-		break;
+		return -EINVAL;
 	}
+	return 0;
 }
 
 void
@@ -144,6 +141,7 @@ gf100_fb = {
 	.intr = gf100_fb_intr,
 	.ram_new = gf100_ram_new,
 	.memtype_valid = gf100_fb_memtype_valid,
+	.default_bigpage = 17,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf100.h

@@ -17,7 +17,5 @@ void gf100_fb_intr(struct nvkm_fb *);
 
 void gp100_fb_init(struct nvkm_fb *);
 
-void gm200_fb_init_page(struct nvkm_fb *fb);
 void gm200_fb_init(struct nvkm_fb *base);
-
 #endif

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gf108.c

@@ -33,6 +33,7 @@ gf108_fb = {
 	.intr = gf100_fb_intr,
 	.ram_new = gf108_ram_new,
 	.memtype_valid = gf100_fb_memtype_valid,
+	.default_bigpage = 17,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk104.c

@@ -33,6 +33,7 @@ gk104_fb = {
 	.intr = gf100_fb_intr,
 	.ram_new = gk104_ram_new,
 	.memtype_valid = gf100_fb_memtype_valid,
+	.default_bigpage = 17,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gk20a.c

@@ -31,6 +31,7 @@ gk20a_fb = {
 	.init_page = gf100_fb_init_page,
 	.intr = gf100_fb_intr,
 	.memtype_valid = gf100_fb_memtype_valid,
+	.default_bigpage = 17,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gm107.c

@@ -33,6 +33,7 @@ gm107_fb = {
 	.intr = gf100_fb_intr,
 	.ram_new = gm107_ram_new,
 	.memtype_valid = gf100_fb_memtype_valid,
+	.default_bigpage = 17,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gm200.c

@@ -26,22 +26,18 @@
 
 #include <core/memory.h>
 
-void
+int
 gm200_fb_init_page(struct nvkm_fb *fb)
 {
 	struct nvkm_device *device = fb->subdev.device;
 	switch (fb->page) {
-	case 16:
-		nvkm_mask(device, 0x100c80, 0x00000801, 0x00000001);
-		break;
-	case 17:
-		nvkm_mask(device, 0x100c80, 0x00000801, 0x00000000);
-		break;
+	case 16: nvkm_mask(device, 0x100c80, 0x00000801, 0x00000001); break;
+	case 17: nvkm_mask(device, 0x100c80, 0x00000801, 0x00000000); break;
+	case  0: nvkm_mask(device, 0x100c80, 0x00000800, 0x00000800); break;
 	default:
-		nvkm_mask(device, 0x100c80, 0x00000800, 0x00000800);
-		fb->page = 0;
-		break;
+		return -EINVAL;
 	}
+	return 0;
 }
 
 void
@@ -70,6 +66,7 @@ gm200_fb = {
 	.intr = gf100_fb_intr,
 	.ram_new = gm200_ram_new,
 	.memtype_valid = gf100_fb_memtype_valid,
+	.default_bigpage = 0 /* per-instance. */,
 };
 
 int

drivers/gpu/drm/nouveau/nvkm/subdev/fb/gm20b.c

@@ -31,6 +31,7 @@ gm20b_fb = {
 	.init_page = gm200_fb_init_page,
 	.intr = gf100_fb_intr,
 	.memtype_valid = gf100_fb_memtype_valid,
+	.default_bigpage = 0 /* per-instance. */,
 };
 
 int

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

@@ -8,7 +8,7 @@ struct nvkm_fb_func {
 	void *(*dtor)(struct nvkm_fb *);
 	int (*oneinit)(struct nvkm_fb *);
 	void (*init)(struct nvkm_fb *);
-	void (*init_page)(struct nvkm_fb *);
+	int (*init_page)(struct nvkm_fb *);
 	void (*init_unkn)(struct nvkm_fb *);
 	void (*intr)(struct nvkm_fb *);
 
@@ -25,6 +25,8 @@ struct nvkm_fb_func {
 	int (*ram_new)(struct nvkm_fb *, struct nvkm_ram **);
 
 	bool (*memtype_valid)(struct nvkm_fb *, u32 memtype);
+
+	u8 default_bigpage;
 };
 
 void nvkm_fb_ctor(const struct nvkm_fb_func *, struct nvkm_device *device,
@@ -62,8 +64,8 @@ void nv46_fb_tile_init(struct nvkm_fb *, int i, u32 addr, u32 size,
 		       u32 pitch, u32 flags, struct nvkm_fb_tile *);
 
 int gf100_fb_oneinit(struct nvkm_fb *);
-void gf100_fb_init_page(struct nvkm_fb *);
+int gf100_fb_init_page(struct nvkm_fb *);
 bool gf100_fb_memtype_valid(struct nvkm_fb *, u32);
 
-void gm200_fb_init_page(struct nvkm_fb *);
+int gm200_fb_init_page(struct nvkm_fb *);
 #endif