gpu: nvgpu: add nvhost abstraction files

Add new abstraction file common/linux/nvhost.c for all
nvhost APIs and operations and export them from
header <nvgpu/nvhost.h>

This file will be compiled only if config
CONFIG_TEGRA_GK20A_NVHOST is set

Define struct nvgpu_nvhost_dev in a separate private
header nvhost_priv.h

Jira NVGPU-29

Change-Id: I17e1f7836d4854feadff0c339bc093e78ba7f3eb
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1489725
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

1 files changed, 75 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/include/nvgpu/nvhost.h b/drivers/gpu/nvgpu/include/nvgpu/nvhost.h
new file mode 100644
index 00000000..025061dc
--- /dev/null
+++ b/drivers/gpu/nvgpu/include/nvgpu/nvhost.h
@@ -0,0 +1,75 @@
+/*
+ * 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 __NVGPU_NVHOST_H__
+#define __NVGPU_NVHOST_H__
+
+#ifdef CONFIG_TEGRA_GK20A_NVHOST
+
+struct nvgpu_nvhost_dev;
+struct gk20a;
+struct sync_pt;
+struct sync_fence;
+struct timespec;
+
+int nvgpu_get_nvhost_dev(struct gk20a *g);
+void nvgpu_free_nvhost_dev(struct gk20a *g);
+
+int nvgpu_nvhost_module_busy_ext(struct nvgpu_nvhost_dev *nvhost_dev);
+void nvgpu_nvhost_module_idle_ext(struct nvgpu_nvhost_dev *nvhost_dev);
+
+void nvgpu_nvhost_debug_dump_device(struct nvgpu_nvhost_dev *nvhost_dev);
+
+int nvgpu_nvhost_syncpt_is_expired_ext(struct nvgpu_nvhost_dev *nvhost_dev,
+        u32 id, u32 thresh);
+int nvgpu_nvhost_syncpt_wait_timeout_ext(struct nvgpu_nvhost_dev *nvhost_dev,
+        u32 id, u32 thresh, u32 timeout, u32 *value, struct timespec *ts);
+
+u32 nvgpu_nvhost_syncpt_incr_max_ext(struct nvgpu_nvhost_dev *nvhost_dev,
+        u32 id, u32 incrs);
+void nvgpu_nvhost_syncpt_set_min_eq_max_ext(struct nvgpu_nvhost_dev *nvhost_dev,
+        u32 id);
+int nvgpu_nvhost_syncpt_read_ext_check(struct nvgpu_nvhost_dev *nvhost_dev,
+        u32 id, u32 *val);
+
+int nvgpu_nvhost_intr_register_notifier(struct nvgpu_nvhost_dev *nvhost_dev,
+        u32 id, u32 thresh, void (*callback)(void *, int), void *private_data);
+
+const char *nvgpu_nvhost_syncpt_get_name(struct nvgpu_nvhost_dev *nvhost_dev,
+        int id);
+bool nvgpu_nvhost_syncpt_is_valid_pt_ext(struct nvgpu_nvhost_dev *nvhost_dev,
+        u32 id);
+void nvgpu_nvhost_syncpt_put_ref_ext(struct nvgpu_nvhost_dev *nvhost_dev,
+        u32 id);
+u32 nvgpu_nvhost_get_syncpt_host_managed(struct nvgpu_nvhost_dev *nvhost_dev,
+        u32 param,
+        const char *syncpt_name);
+
+int nvgpu_nvhost_create_symlink(struct gk20a *g);
+void nvgpu_nvhost_remove_symlink(struct gk20a *g);
+
+#ifdef CONFIG_SYNC
+u32 nvgpu_nvhost_sync_pt_id(struct sync_pt *pt);
+u32 nvgpu_nvhost_sync_pt_thresh(struct sync_pt *pt);
+int nvgpu_nvhost_sync_num_pts(struct sync_fence *fence);
+
+struct sync_fence *nvgpu_nvhost_sync_fdget(int fd);
+struct sync_fence *nvgpu_nvhost_sync_create_fence(
+        struct nvgpu_nvhost_dev *nvhost_dev,
+        u32 id, u32 thresh, u32 num_pts, const char *name);
+#endif /* CONFIG_SYNC */
+#endif /* CONFIG_TEGRA_GK20A_NVHOST */
+#endif /* __NVGPU_NVHOST_H__ */