gpu: nvgpu: Add bus HAL

Add bus HAL and move all bus related hardware sequencing to that file:
BAR1 binding, timer access, and interrupt handling.

Change-Id: Ibc5f5797dc338de10749b446a7bdbcae600fecb4
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1323353
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/bus_gk20a.h b/drivers/gpu/nvgpu/gk20a/bus_gk20a.h
new file mode 100644
index 00000000..01526f06
--- /dev/null
+++ b/drivers/gpu/nvgpu/gk20a/bus_gk20a.h
@@ -0,0 +1,29 @@
+/*
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef BUS_GK20A_H
+#define BUS_GK20A_H
+
+struct gk20a;
+struct gpu_ops;
+struct mem_desc;
+
+void gk20a_init_bus(struct gpu_ops *gops);
+
+void gk20a_bus_isr(struct gk20a *g);
+int gk20a_read_ptimer(struct gk20a *g, u64 *value);
+void gk20a_bus_init_hw(struct gk20a *g);
+
+#endif /* GK20A_H */