gpu: nvgpu: Add Top as a unit

NVHSCLK registers used by NVLINK IP are part of dev_top
hardware headers. This patch adds "Top" as a separate
unit and exposes HALs to access dev_top registers. The top
unit contains top-level configuration information and any
extra registers or features that do not fit into another block's
feature set.

JIRA NVGPU-1053
JIRA NVGPU-966

Change-Id: Id9a43d4a1c5397959897a242ea97a39a1b95f916
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1803632
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2 files changed, 103 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/top/top_gv100.c b/drivers/gpu/nvgpu/common/top/top_gv100.c
new file mode 100644
index 00000000..138528a2
--- /dev/null
+++ b/drivers/gpu/nvgpu/common/top/top_gv100.c
@@ -0,0 +1,66 @@
+/*
+ * GV100 TOP UNIT
+ *
+ * Copyright (c) 2018, 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/io.h>
+
+#include "gk20a/gk20a.h"
+#include "top_gv100.h"
+
+#include <nvgpu/hw/gv100/hw_top_gv100.h>
+
+u32 gv100_top_get_nvhsclk_ctrl_e_clk_nvl(struct gk20a *g)
+{
+        u32 reg;
+
+        reg = nvgpu_readl(g, top_nvhsclk_ctrl_r());
+        return top_nvhsclk_ctrl_e_clk_nvl_v(reg);
+}
+
+void gv100_top_set_nvhsclk_ctrl_e_clk_nvl(struct gk20a *g, u32 val)
+{
+        u32 reg;
+
+        reg = nvgpu_readl(g, top_nvhsclk_ctrl_r());
+        reg = set_field(reg, top_nvhsclk_ctrl_e_clk_nvl_m(),
+                                top_nvhsclk_ctrl_e_clk_nvl_f(val));
+        nvgpu_writel(g, top_nvhsclk_ctrl_r(), reg);
+}
+
+u32 gv100_top_get_nvhsclk_ctrl_swap_clk_nvl(struct gk20a *g)
+{
+        u32 reg;
+
+        reg = nvgpu_readl(g, top_nvhsclk_ctrl_r());
+        return top_nvhsclk_ctrl_swap_clk_nvl_v(reg);
+}
+
+void gv100_top_set_nvhsclk_ctrl_swap_clk_nvl(struct gk20a *g, u32 val)
+{
+        u32 reg;
+
+        reg = nvgpu_readl(g, top_nvhsclk_ctrl_r());
+        reg = set_field(reg, top_nvhsclk_ctrl_swap_clk_nvl_m(),
+                                top_nvhsclk_ctrl_swap_clk_nvl_f(val));
+        nvgpu_writel(g, top_nvhsclk_ctrl_r(), reg);
+}
diff --git a/drivers/gpu/nvgpu/common/top/top_gv100.h b/drivers/gpu/nvgpu/common/top/top_gv100.h
new file mode 100644
index 00000000..885b7814
--- /dev/null
+++ b/drivers/gpu/nvgpu/common/top/top_gv100.h
@@ -0,0 +1,37 @@
+/*
+ * GV100 TOP UNIT
+ *
+ * Copyright (c) 2018, 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.
+ */
+
+#ifndef TOP_GV100_H
+#define TOP_GV100_H
+
+#include <nvgpu/types.h>
+
+struct gk20a;
+
+u32 gv100_top_get_nvhsclk_ctrl_e_clk_nvl(struct gk20a *g);
+void gv100_top_set_nvhsclk_ctrl_e_clk_nvl(struct gk20a *g, u32 val);
+u32 gv100_top_get_nvhsclk_ctrl_swap_clk_nvl(struct gk20a *g);
+void gv100_top_set_nvhsclk_ctrl_swap_clk_nvl(struct gk20a *g, u32 val);
+
+#endif