linux.git/drivers/memory/tegra/tegra186.c, branch v6.7

memory: Explicitly include correct DT includes

2023-07-25T20:09:37+00:00

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Signed-off-by: Rob Herring 
Link: https://lore.kernel.org/r/20230714174717.4059518-1-robh@kernel.org
Signed-off-by: Krzysztof Kozlowski

memory: tegra: Remove clients SID override programming

2022-12-27T08:52:33+00:00

On newer Tegra releases, early boot SID override programming and SID
override programming during resume is handled by bootloader.
In the function tegra186_mc_program_sid() which is getting removed, SID
override register of all clients is written without checking if secure
firmware has allowed write on it or not. If write is disabled by secure
firmware then it can lead to errors coming from secure firmware and hang
in kernel boot.
Also, SID override is programmed on-demand during probe_finalize() call
of IOMMU which is done in tegra186_mc_client_sid_override() in this same
file. This function does it correctly by checking if write is permitted
on SID override register. It also checks if SID override register is
already written with correct value and skips re-writing it in that case.

Fixes: 393d66fd2cac ("memory: tegra: Implement SID override programming")
Signed-off-by: Ashish Mhetre 
Acked-by: Thierry Reding 
Link: https://lore.kernel.org/r/20221125040752.12627-1-amhetre@nvidia.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra: Add MC error logging on Tegra186 onward

2022-05-09T08:46:14+00:00

Add support for logging memory controller errors on Tegra186, Tegra194
and Tegra234. On these SoCs, interrupts can occur on multiple channels.
Add support required to read the status of interrupts across multiple
channels, log and clear them.

Also add new interrupts supported on these SoCs.

Reviewed-by: Dmitry Osipenko 
Signed-off-by: Ashish Mhetre 
Signed-off-by: Thierry Reding 
Link: https://lore.kernel.org/r/20220506132312.3910637-5-thierry.reding@gmail.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra: Add memory controller channels support

2022-05-09T08:46:11+00:00

From Tegra186 onwards, the memory controller supports multiple channels.
Add support for mapping the address spaces of these channels and specify
the number of channels supported by Tegra186, Tegra194 and Tegra234.

In case of old bindings, channels won't be present. If channels are not
present then print a warning and continue so that backward compatibility
will be preserved in driver.

During error interrupts from memory controller, appropriate registers
from these channels need to be accessed for logging error info.

Signed-off-by: Ashish Mhetre 
Reviewed-by: Dmitry Osipenko 
Signed-off-by: Thierry Reding 
Link: https://lore.kernel.org/r/20220506132312.3910637-4-thierry.reding@gmail.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra: fix unused-function warning

2021-07-23T06:25:34+00:00

The tegra186_mc_client_sid_override() is only called from
an #ifdef block:

drivers/memory/tegra/tegra186.c:74:13: error: 'tegra186_mc_client_sid_override' defined but not used [-Werror=unused-function]
   74 | static void tegra186_mc_client_sid_override(struct tegra_mc *mc,
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Add another #ifdef around the called function.

Fixes: 393d66fd2cac ("memory: tegra: Implement SID override programming")
Signed-off-by: Arnd Bergmann 
Acked-by: Jon Hunter 
Link: https://lore.kernel.org/r/20210722090748.1157470-1-arnd@kernel.org
Signed-off-by: Krzysztof Kozlowski

memory: tegra: Implement SID override programming

2021-06-03T19:50:43+00:00

Instead of programming all SID overrides during early boot, perform the
operation on-demand after the SMMU translations have been set up for a
device. This reuses data from device tree to match memory clients for a
device and programs the SID specified in device tree, which corresponds
to the SID used for the SMMU context banks for the device.

Signed-off-by: Thierry Reding 
Link: https://lore.kernel.org/r/20210603164632.1000458-2-thierry.reding@gmail.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra: Split Tegra194 data into separate file

2021-06-03T19:49:41+00:00

Keep the directory structure consistent by splitting the Tegra194 data
into a separate file.

Signed-off-by: Thierry Reding 
Link: https://lore.kernel.org/r/20210602163302.120041-13-thierry.reding@gmail.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra: Add memory client IDs to tables

2021-06-03T19:49:41+00:00

The memory client IDs will subsequently be used to program override SIDs
for the given clients depending on the device tree configuration.

Signed-off-by: Thierry Reding 
Link: https://lore.kernel.org/r/20210602163302.120041-12-thierry.reding@gmail.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra: Unify drivers

2021-06-03T19:49:41+00:00

The Tegra210 (and earlier) driver now supports all the functionality
that the Tegra186 (and later) driver does, so they can be unified.

Note that previously the Tegra186 (and later) driver could be unloaded,
even if that was perhaps not very useful. Older chips don't support that
yet, but once they do this code can be reenabled.

Signed-off-by: Thierry Reding 
Link: https://lore.kernel.org/r/20210602163302.120041-11-thierry.reding@gmail.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra: Push suspend/resume into SoC drivers

2021-06-03T19:49:41+00:00

Continuing the scheme of unification, push suspend/resume callbacks into
per-SoC driver so that they can be properly parameterized.

Signed-off-by: Thierry Reding 
Link: https://lore.kernel.org/r/20210602163302.120041-5-thierry.reding@gmail.com
Signed-off-by: Krzysztof Kozlowski