[v2,0/2] ACPI: Arm Generic Diagnostic Dump and Reset device

Message

Ilkka Koskinen Dec. 14, 2021, 4:40 a.m. UTC

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 master
  git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core


It seems that the correct order to upstream ACPICA patch first and backport
it to kernel. Thus, I'm assuming this patchset should not get merged yet.

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

Ilkka Koskinen (2):
  ACPI: AGDI: Add AGDI tables to drivers/acpi
  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 +-
 include/acpi/actbl2.h       |  20 ++++++
 5 files changed, 155 insertions(+), 1 deletion(-)
 create mode 100644 drivers/acpi/arm64/agdi.c