gpu: nvgpu: add platform atomic support

Add new variable in nvgpu_as_map_buffer_ex_args for app
to specify the platform atomic support for the page.
When platform atomic attribute flag is set, pte memory
aperture is set to be coherent type.

renamed nvgpu_aperture_mask_coh -> nvgpu_aperture_mask_raw
function.

bug 200580236

Change-Id: I18266724dafdc8dfd96a0711f23cf08e23682afc
Signed-off-by: Vinod G <vinodg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2012679
(cherry picked from commit 9e0a9004b71f92b7713fd3b30141b0d9d4cfa2c6)
Signed-off-by: Lakshmanan M <lm@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2274914
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: Sreeniketh H <sh@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/vm.c b/drivers/gpu/nvgpu/os/linux/vm.c
index 27a91cf6..dc807ab6 100644
--- a/drivers/gpu/nvgpu/os/linux/vm.c
+++ b/drivers/gpu/nvgpu/os/linux/vm.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2020, 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,
@@ -54,6 +54,8 @@ static u32 nvgpu_vm_translate_linux_flags(struct gk20a *g, u32 flags)
                 core_flags |= NVGPU_VM_MAP_L3_ALLOC;
         if (flags & NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL)
                 core_flags |= NVGPU_VM_MAP_DIRECT_KIND_CTRL;
+        if (flags & NVGPU_AS_MAP_BUFFER_FLAGS_PLATFORM_ATOMIC)
+                core_flags |= NVGPU_VM_MAP_PLATFORM_ATOMIC;
 
         if (flags & NVGPU_AS_MAP_BUFFER_FLAGS_MAPPABLE_COMPBITS)
                 nvgpu_warn(g, "Ignoring deprecated flag: "