Move the code involved in nvlink register initialization into a
separate unit called "nvlink_device_reginit".
Nvlink device_reginit will be an unit under component nvlink_init.
TLC buffer credit initialization is done by this unit.
JIRA NVGPU-1784
Change-Id: I9dd4238d0288b33867eb8a8993e56287a67a907f
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1994665
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
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1. The nvlink code in common/ is clean from any external API usage.
There should not be any compilation issues with POSIX build if we
include nvlink.c to it.
2. Rename the nvlink file in POSIX build to avoid the tmake
duplicate filename issue.
3. Set CONFIG_TEGRA_NVLINK for POSIX to enable reporting of MISRA
violations in nvlink code by the MISRA scanner.
4. To fix the build issues:
a. Add stubs in POSIX
b. Return the 'err' variable set during dev_shutdown() as 'err'
is set but not used.
JIRA NVGPU-1921
JIRA NVGPU-1319
Change-Id: Ifdd6574d772167856782bafa74994507b3cedf4c
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2005622
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>
Move the code involved in nvlink probe sequence into a separate
unit called "nvlink_probe"
nvlink probe code is spread over both the common and OS specific
nvlink files.
Nvlink Probe unit would encompass code needed to initialize the
nvlink software state. Nvlink software initialization involves:
1. Allocate memory for nvlink_device and nvlink_link structs
2. Read the device tree pci node to know about nvlink topology
3. Initialize nvlink function pointers needed by Tegra nvlink
core-driver
4. Register nvlink_device and nvlink_link with the core-driver.
nvlink probe returns -ENODEV when nvlink is not supported.
Nvlink is not supported in two cases:
1. There is no nvlink IP on the Tegra SoC which is denoted by
CONFIG_TEGRA_NVLINK or
2. The pci device tree node does not have "nvidia,nvlink" child
node needed to describe nvlink topology.
Any negative return value other than -ENODEV denotes failure in
execution of nvlink probe.
JIRA NVGPU-1783
Change-Id: I50011b25d88d8cc01569caac7895abe32ee38215
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1994619
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
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The Tegra SOC nvlink driver and dGPU nvlink driver depend on
struct definitions, macros and functions exposed by nvlink-core
driver. The nvlink-core driver is not part of the nvgpu driver,
hence we should not be directly accessing any core driver
APIs/macros/structs from the /common/nvlink code. Common code can
only use nvgpu internal APIs. We wrap all calls from common/nvlink.c
to other drivers in nvgpu wrappers, and define the implementation of
wrappers in os/linux and os/nvgpu_rmos, and stub them in os/posix.
Also, we remove the implicit inclusion of OS specific nvlink header
file via common nvgpu/nvlink.h. So the OS specific code needs to
explicitly add OS specific header file.
JIRA NVGPU-966
Change-Id: I65c67e247ee74088bb1253f6ae4c8d0c49420a98
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1990071
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Antony Clince Alex <aalex@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Rename __nvgpu_set_enabled() to nvgpu_set_enabled(). The original
double underscore was present to indicate that this function is a
function with potentially unintended side effects (enabling a feature
has wide ranging impact).
To not lose this documentation a comment was added to convey that this
function must be used with care.
JIRA NVGPU-1029
Change-Id: I8bfc6fa4c17743f9f8056cb6a7a0f66229ca2583
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1989434
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Move the nvlink HAL code to unit specific directory as part
of nvgpu restructing.
This move is done after removing usage of other unit's hardware
headers from nvlink. Also confirmed that no other unit files are
including nvlink hardware headers.
JIRA NVGPU-966
Change-Id: I301e3f8de37c5792a3e1e799b97e5fdfc131f058
Signed-off-by: Tejal Kudav <tkudav@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1975259
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
