drm/nouveau/gsp: select implementation based on available firmware

This will allow for further customisation of the subdev depending on what
firmware is available.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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

 # SPDX-License-Identifier: MIT
+nvkm-y += nvkm/subdev/gsp/base.o
 nvkm-y += nvkm/subdev/gsp/gv100.o

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

+/*
+ * Copyright 2019 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"
+#include <core/falcon.h>
+#include <core/firmware.h>
+#include <subdev/acr.h>
+#include <subdev/top.h>
+
+static int
+nvkm_gsp_oneinit(struct nvkm_subdev *subdev)
+{
+	struct nvkm_gsp *gsp = nvkm_gsp(subdev);
+
+	gsp->addr = nvkm_top_addr(subdev->device, subdev->index);
+	if (!gsp->addr)
+		return -EINVAL;
+
+	return nvkm_falcon_v1_new(subdev, "GSP", gsp->addr, &gsp->falcon);
+}
+
+static void *
+nvkm_gsp_dtor(struct nvkm_subdev *subdev)
+{
+	struct nvkm_gsp *gsp = nvkm_gsp(subdev);
+	nvkm_falcon_del(&gsp->falcon);
+	return gsp;
+}
+
+static const struct nvkm_subdev_func
+nvkm_gsp = {
+	.dtor = nvkm_gsp_dtor,
+	.oneinit = nvkm_gsp_oneinit,
+};
+
+int
+nvkm_gsp_new_(const struct nvkm_gsp_fwif *fwif, struct nvkm_device *device,
+	      int index, struct nvkm_gsp **pgsp)
+{
+	struct nvkm_gsp *gsp;
+
+	if (!(gsp = *pgsp = kzalloc(sizeof(*gsp), GFP_KERNEL)))
+		return -ENOMEM;
+
+	nvkm_subdev_ctor(&nvkm_gsp, device, index, &gsp->subdev);
+
+	fwif = nvkm_firmware_load(&gsp->subdev, fwif, "Gsp", gsp);
+	if (IS_ERR(fwif))
+		return PTR_ERR(fwif);
+
+	return 0;
+}

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/gv100.c

@@ -19,44 +19,22 @@
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  */
-#include <subdev/gsp.h>
-#include <subdev/top.h>
-#include <engine/falcon.h>
+#include "priv.h"
 
 static int
-gv100_gsp_oneinit(struct nvkm_subdev *subdev)
+gv100_gsp_nofw(struct nvkm_gsp *gsp, int ver, const struct nvkm_gsp_fwif *fwif)
 {
-	struct nvkm_gsp *gsp = nvkm_gsp(subdev);
-
-	gsp->addr = nvkm_top_addr(subdev->device, subdev->index);
-	if (!gsp->addr)
-		return -EINVAL;
-
-	return nvkm_falcon_v1_new(subdev, "GSP", gsp->addr, &gsp->falcon);
-}
-
-static void *
-gv100_gsp_dtor(struct nvkm_subdev *subdev)
-{
-	struct nvkm_gsp *gsp = nvkm_gsp(subdev);
-	nvkm_falcon_del(&gsp->falcon);
-	return gsp;
+	return 0;
 }
 
-static const struct nvkm_subdev_func
-gv100_gsp = {
-	.dtor = gv100_gsp_dtor,
-	.oneinit = gv100_gsp_oneinit,
+struct nvkm_gsp_fwif
+gv100_gsp[] = {
+	{ -1, gv100_gsp_nofw },
+	{}
 };
 
 int
 gv100_gsp_new(struct nvkm_device *device, int index, struct nvkm_gsp **pgsp)
 {
-	struct nvkm_gsp *gsp;
-
-	if (!(gsp = *pgsp = kzalloc(sizeof(*gsp), GFP_KERNEL)))
-		return -ENOMEM;
-
-	nvkm_subdev_ctor(&gv100_gsp, device, index, &gsp->subdev);
-	return 0;
+	return nvkm_gsp_new_(gv100_gsp, device, index, pgsp);
 }

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

+/* SPDX-License-Identifier: MIT */
+#ifndef __NVKM_GSP_PRIV_H__
+#define __NVKM_GSP_PRIV_H__
+#include <subdev/gsp.h>
+enum nvkm_acr_lsf_id;
+
+struct nvkm_gsp_fwif {
+	int version;
+	int (*load)(struct nvkm_gsp *, int ver, const struct nvkm_gsp_fwif *);
+};
+
+int nvkm_gsp_new_(const struct nvkm_gsp_fwif *, struct nvkm_device *, int,
+		  struct nvkm_gsp **);
+#endif