gpu: nvgpu: Userspace POSIX support

Add support for compiling nvgpu in a POSIX compliant userspace.
This code adds all of the necessary abstraction interfaces (mostly
stubbed) to enabled extremely limited and basic functionality in
nvgpu.

The goal of this code is to facilitate unit testing of the nvgpu
common core. By doing this in userspace it is much easier to write
tests that rely on very particular states within nvgpu since a user
can very precisely control the state of nvgpu.

JIRA NVGPU-525

Change-Id: I30e95016df14997d951075777e0585f912dc5960
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1683914
GVS: Gerrit_Virtual_Submit
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, 15 insertions, 0 deletions

diff --git a/userspace/Makefile.configs b/userspace/Makefile.configs
new file mode 100644
index 00000000..d7e807af
--- /dev/null
+++ b/userspace/Makefile.configs
@@ -0,0 +1,15 @@
+#
+# Define various configs such as VIDMEM, etc. This is a bit annoying since
+# this really should be specific to Linux, but many header files need to
+# be aware of the CONFIG_* defines. As such we replicate some of the configs
+# that we potientially will want enabled in testing.
+#
+
+configs :=
+
+# Enabled configs.
+# None right now!
+
+# Uncomment these to enable the config.
+# configs += -DCONFIG_NVGPU_TRACK_MEM_USAGE=y
+# configs += -DCONFIG_GK20A_VIDMEM