gpu: nvgpu: remove dependency on linux header for sim_gk20a*

This patch removes linux dependencies from sim_gk20a.h under
gk20a/sim_gk20a.h. The following changes are made in this patch.

1) Created a linux based structure sim_gk20a_linux that contains a
common sim_gk20a struct inside it. The common struct sim_gk20a doesn't
contain any linux specific structs.
2) The common struct sim_gk20a contains an added function pointer which
is used to invoke gk20a_sim_esc_readl() method.
3) sim_gk20a.c is moved to nvgpu/common/linux along with a new header
sim_gk20a.h that contains the definition of struct sim_gk20a_linux.
4) struct gk20a now contains a pointer of sim_gk20a instead of the
entire object. The memory for this struct is allocated and  initialized during
gk20a_init_support() and freed during invocation of
gk20_remove_support().
5) We first obtain the pointer for struct sim_gk20a_linux from the
pointer of sim_gk20a using the container_of method in order to work on
the struct.

JIRA NVGPU-386

Change-Id: Ic82b8702642377f82694577a53c3ca0b9c1bb2ab
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1603073
GVS: Gerrit_Virtual_Submit
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 12 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/sim_gk20a.h b/drivers/gpu/nvgpu/gk20a/sim_gk20a.h
index 44378e7a..8f23abd8 100644
--- a/drivers/gpu/nvgpu/gk20a/sim_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/sim_gk20a.h
@@ -3,7 +3,7 @@
  *
  * GK20A sim support
  *
- * Copyright (c) 2013, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2013-2017, 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"),
@@ -27,25 +27,16 @@
 #define __SIM_GK20A_H__
 
 struct gk20a;
-struct platform_device;
 
 struct sim_gk20a {
         struct gk20a *g;
-        struct resource *reg_mem;
-        void __iomem *regs;
-        struct {
-                struct page *page;
-                void *kvaddr;
-                u64 phys;
-        } send_bfr, recv_bfr, msg_bfr;
         u32 send_ring_put;
         u32 recv_ring_get;
         u32 recv_ring_put;
         u32 sequence_base;
         void (*remove_support)(struct sim_gk20a *);
+        int (*esc_readl)(
+                struct gk20a *g, char *path, u32 index, u32 *data);
 };
 
-int gk20a_init_sim_support(struct gk20a *g);
-int gk20a_sim_esc_readl(struct gk20a *g, char *path, u32 index, u32 *data);
-
 #endif /*__SIM_GK20A_H__*/