[PATCH v3 0/2] ACPI: Arm Generic Diagnostic Dump and Reset device

Ilkka Koskinen
2021-12-31T03:39:46Z

Arm Generic Diagnostic Dump and Reset device enables a maintainer to
request OS to perform a diagnostic dump and reset a system via SDEI
event or an interrupt. This patchset adds support for the SDEI path.

I do have a patch to enable the interrupt path as well but I'm holding
it back since AGDI table is missing interrupt configuration fields
(trigger type etc.).

The recently published specification is available at
https://developer.arm.com/documentation/den0093/latest

The patchset was tested on Ampere Altra/Mt. Jade.

The patchset applies on top of
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm bleeding-edge (642439a44411)

From v1:
* Moved pdata to the stack and dropped unnecessary kzalloc() in agdi_init()
* Changed the ACPICA patch upstreaming order comment in the paragraph above

From v2:
* The first patch was split. The most of it was merged to ACPICA project
at first and later ported to linux-acpi
(fd919e37cb15914c6fe13e13d530a4f732407c6d). The rest are in the first patch.

Ilkka Koskinen (2):
ACPI: tables: Add AGDI to the list of known table signatures
ACPI: AGDI: Add driver for Arm Generic Diagnostic Dump and Reset
device

drivers/acpi/arm64/Kconfig | 8 +++
drivers/acpi/arm64/Makefile | 1 +
drivers/acpi/arm64/agdi.c | 125 ++++++++++++++++++++++++++++++++++++
drivers/acpi/tables.c | 2 +-
4 files changed, 135 insertions(+), 1 deletion(-)
create mode 100644 drivers/acpi/arm64/agdi.c

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2.17.1