gpu: nvgpu: interface layer for falcon

- struct nvgpu_falcon to hold properties of falcon controller
- falcon controller interface layer which establish access
to required falcon controller HAL based on struct nvgpu_falcon member
flcn_id & flcn_base parameter.
- each falcon nvgpu_falcon struct initialized during init
with id, base-address along with other properties at HAL.
- Added defines related to flacon controller.

Change-Id: Ia7777c01ecc542150ddd72f8603b7b4475522b58
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/1467523
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/falcon/falcon.c b/drivers/gpu/nvgpu/common/falcon/falcon.c
new file mode 100644
index 00000000..ac1b390f
--- /dev/null
+++ b/drivers/gpu/nvgpu/common/falcon/falcon.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2017, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+#include <nvgpu/lock.h>
+#include <nvgpu/timers.h>
+#include <nvgpu/falcon.h>
+
+#include "gk20a/gk20a.h"
+
+void nvgpu_flcn_sw_init(struct gk20a *g, u32 flcn_id)
+{
+        struct nvgpu_falcon *flcn = NULL;
+        struct gpu_ops *gops = &g->ops;
+
+        switch (flcn_id) {
+        case FALCON_ID_PMU:
+                flcn = &g->pmu_flcn;
+                flcn->flcn_id = flcn_id;
+                break;
+        case FALCON_ID_SEC2:
+                flcn = &g->sec2_flcn;
+                flcn->flcn_id = flcn_id;
+                break;
+        case FALCON_ID_FECS:
+                flcn = &g->fecs_flcn;
+                flcn->flcn_id = flcn_id;
+                break;
+        case FALCON_ID_GPCCS:
+                flcn = &g->gpccs_flcn;
+                flcn->flcn_id = flcn_id;
+        break;
+        default:
+                nvgpu_err(g, "Invalid/Unsupported falcon ID %x", flcn->flcn_id);
+                break;
+        };
+
+        /* call to HAL method to assign flcn base & ops to selected falcon */
+        if (flcn) {
+                flcn->g = g;
+                gops->falcon.falcon_hal_sw_init(flcn);
+        }
+}