drm/nouveau/mc: add GP10B support

GP10B's MC is compatible with GP100's, but engines need to be explicitly
put out of ELPG during init.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvkm/subdev/mc.h

@@ -29,4 +29,5 @@ int gf100_mc_new(struct nvkm_device *, int, struct nvkm_mc **);
 int gk104_mc_new(struct nvkm_device *, int, struct nvkm_mc **);
 int gk20a_mc_new(struct nvkm_device *, int, struct nvkm_mc **);
 int gp100_mc_new(struct nvkm_device *, int, struct nvkm_mc **);
+int gp10b_mc_new(struct nvkm_device *, int, struct nvkm_mc **);
 #endif

drivers/gpu/drm/nouveau/nvkm/subdev/mc/Kbuild

@@ -11,3 +11,4 @@ nvkm-y += nvkm/subdev/mc/gf100.o
 nvkm-y += nvkm/subdev/mc/gk104.o
 nvkm-y += nvkm/subdev/mc/gk20a.o
 nvkm-y += nvkm/subdev/mc/gp100.o
+nvkm-y += nvkm/subdev/mc/gp10b.o

drivers/gpu/drm/nouveau/nvkm/subdev/mc/gp100.c

@@ -42,7 +42,7 @@ gp100_mc_intr_update(struct gp100_mc *mc)
 	}
 }
 
-static void
+void
 gp100_mc_intr_unarm(struct nvkm_mc *base)
 {
 	struct gp100_mc *mc = gp100_mc(base);
@@ -53,7 +53,7 @@ gp100_mc_intr_unarm(struct nvkm_mc *base)
 	spin_unlock_irqrestore(&mc->lock, flags);
 }
 
-static void
+void
 gp100_mc_intr_rearm(struct nvkm_mc *base)
 {
 	struct gp100_mc *mc = gp100_mc(base);
@@ -64,7 +64,7 @@ gp100_mc_intr_rearm(struct nvkm_mc *base)
 	spin_unlock_irqrestore(&mc->lock, flags);
 }
 
-static void
+void
 gp100_mc_intr_mask(struct nvkm_mc *base, u32 mask, u32 intr)
 {
 	struct gp100_mc *mc = gp100_mc(base);
@@ -87,13 +87,14 @@ gp100_mc = {
 };
 
 int
-gp100_mc_new(struct nvkm_device *device, int index, struct nvkm_mc **pmc)
+gp100_mc_new_(const struct nvkm_mc_func *func, struct nvkm_device *device,
+	      int index, struct nvkm_mc **pmc)
 {
 	struct gp100_mc *mc;
 
 	if (!(mc = kzalloc(sizeof(*mc), GFP_KERNEL)))
 		return -ENOMEM;
-	nvkm_mc_ctor(&gp100_mc, device, index, &mc->base);
+	nvkm_mc_ctor(func, device, index, &mc->base);
 	*pmc = &mc->base;
 
 	spin_lock_init(&mc->lock);
@@ -101,3 +102,9 @@ gp100_mc_new(struct nvkm_device *device, int index, struct nvkm_mc **pmc)
 	mc->mask = 0x7fffffff;
 	return 0;
 }
+
+int
+gp100_mc_new(struct nvkm_device *device, int index, struct nvkm_mc **pmc)
+{
+	return gp100_mc_new_(&gp100_mc, device, index, pmc);
+}

drivers/gpu/drm/nouveau/nvkm/subdev/mc/gp10b.c

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
+ *
+ * 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"
+
+void
+gp10b_mc_init(struct nvkm_mc *mc)
+{
+	struct nvkm_device *device = mc->subdev.device;
+	nvkm_wr32(device, 0x000200, 0xffffffff); /* everything on */
+	nvkm_wr32(device, 0x00020c, 0xffffffff); /* everything out of ELPG */
+}
+
+static const struct nvkm_mc_func
+gp10b_mc = {
+	.init = gp10b_mc_init,
+	.intr = gk104_mc_intr,
+	.intr_unarm = gp100_mc_intr_unarm,
+	.intr_rearm = gp100_mc_intr_rearm,
+	.intr_mask = gp100_mc_intr_mask,
+	.intr_stat = gf100_mc_intr_stat,
+	.reset = gk104_mc_reset,
+};
+
+int
+gp10b_mc_new(struct nvkm_device *device, int index, struct nvkm_mc **pmc)
+{
+	return gp100_mc_new_(&gp10b_mc, device, index, pmc);
+}

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

@@ -41,12 +41,18 @@ extern const struct nvkm_mc_map nv17_mc_reset[];
 void nv44_mc_init(struct nvkm_mc *);
 
 void nv50_mc_init(struct nvkm_mc *);
+void gk104_mc_init(struct nvkm_mc *);
 
 void gf100_mc_intr_unarm(struct nvkm_mc *);
 void gf100_mc_intr_rearm(struct nvkm_mc *);
 void gf100_mc_intr_mask(struct nvkm_mc *, u32, u32);
 u32 gf100_mc_intr_stat(struct nvkm_mc *);
 void gf100_mc_unk260(struct nvkm_mc *, u32);
+void gp100_mc_intr_unarm(struct nvkm_mc *);
+void gp100_mc_intr_rearm(struct nvkm_mc *);
+void gp100_mc_intr_mask(struct nvkm_mc *, u32, u32);
+int gp100_mc_new_(const struct nvkm_mc_func *, struct nvkm_device *, int,
+		  struct nvkm_mc **);
 
 extern const struct nvkm_mc_map gk104_mc_intr[];
 extern const struct nvkm_mc_map gk104_mc_reset[];