gpu: nvgpu: gsp NVRISCV load and bootstrap

Changes:
- This change will only init gsp software
  state, nvgpu_gsp_bootstrap need to be called.
- CONFIG_NVGPU_GSP_SCHEDULER flag is created to
  compile out the gsp scheduler code when needed.
- Created GSP engine reset which is needed when
  ACR completed execution and need to load gsp fw.

NVGPU-6783

Signed-off-by: Ramesh Mylavarapu <rmylavarapu@nvidia.com>
Change-Id: I26263ee5bae07de056f676ed0fddc1193b5af82d
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2530438
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/common/gsp/gsp_init.c

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2021, 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 AUTHORS OR COPYRIGHT HOLDERS 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 <nvgpu/firmware.h>
+#include <nvgpu/falcon.h>
+#include <nvgpu/gk20a.h>
+#include <nvgpu/log.h>
+#include <nvgpu/gsp.h>
+
+#include "gsp_priv.h"
+#include "gsp_bootstrap.h"
+
+static void nvgpu_gsp_sw_deinit(struct gk20a *g)
+{
+	if (g->gsp != NULL) {
+		nvgpu_kfree(g, g->gsp);
+	}
+}
+
+int nvgpu_gsp_sw_init(struct gk20a *g)
+{
+	int err = 0;
+
+	nvgpu_log_fn(g, " ");
+
+	/* Init struct holding the gsp software state */
+	g->gsp = (struct nvgpu_gsp *)nvgpu_kzalloc(g, sizeof(struct nvgpu_gsp));
+	if (g->gsp == NULL) {
+		err = -ENOMEM;
+		goto de_init;
+	}
+
+	/* gsp falcon software state */
+	g->gsp->gsp_flcn = &g->gsp_flcn;
+
+	return err;
+de_init:
+	nvgpu_gsp_sw_deinit(g);
+	return err;
+}
+
+int nvgpu_gsp_bootstrap(struct gk20a *g)
+{
+	int err = 0;
+
+	nvgpu_log_fn(g, " ");
+
+	err = gsp_bootstrap_ns(g, g->gsp);
+	if (err != 0) {
+		nvgpu_err(g, "GSP bootstrap failed");
+		goto de_init;
+	}
+
+	return err;
+de_init:
+	nvgpu_gsp_sw_deinit(g);
+	return err;
+}