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, 2 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index 60494050..8691c73d 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -32,6 +32,7 @@ struct dbg_profiler_object_data;
 struct ecc_gk20a;
 struct gk20a_debug_output;
 struct nvgpu_clk_pll_debug_data;
+struct nvgpu_nvhost_dev;
 
 #include <linux/sched.h>
 #include <nvgpu/lock.h>
@@ -981,6 +982,7 @@ struct nvgpu_bios {
 struct gk20a {
         struct device *dev;
         struct platform_device *host1x_dev;
+        struct nvgpu_nvhost_dev *nvhost_dev;
 
         /*
          * Used by <nvgpu/enabled.h>. Do not access directly!