[PATCH v6 2/2] ACPI: Add quirks for AMD Renoir/Lucienne CPUs to force the D3 hint

[Raul Rangel]

On Mon, Jun 7, 2021 at 11:32 AM Mario Limonciello
<mario.limonciello at amd.com> wrote:
>
> AMD systems from Renoir and Lucienne require that the NVME controller
> is put into D3 over a Modern Standby / suspend-to-idle
> cycle.  This is "typically" accomplished using the `StorageD3Enable`
> property in the _DSD, but this property was introduced after many
> of these systems launched and most OEM systems don't have it in
> their BIOS.
>
> On AMD Renoir without these drives going into D3 over suspend-to-idle
> the resume will fail with the NVME controller being reset and a trace
> like this in the kernel logs:
> ```
> [   83.556118] nvme nvme0: I/O 161 QID 2 timeout, aborting
> [   83.556178] nvme nvme0: I/O 162 QID 2 timeout, aborting
> [   83.556187] nvme nvme0: I/O 163 QID 2 timeout, aborting
> [   83.556196] nvme nvme0: I/O 164 QID 2 timeout, aborting
> [   95.332114] nvme nvme0: I/O 25 QID 0 timeout, reset controller
> [   95.332843] nvme nvme0: Abort status: 0x371
> [   95.332852] nvme nvme0: Abort status: 0x371
> [   95.332856] nvme nvme0: Abort status: 0x371
> [   95.332859] nvme nvme0: Abort status: 0x371
> [   95.332909] PM: dpm_run_callback(): pci_pm_resume+0x0/0xe0 returns -16
> [   95.332936] nvme 0000:03:00.0: PM: failed to resume async: error -16
> ```
>
> The Microsoft documentation for StorageD3Enable mentioned that Windows has
> a hardcoded allowlist for D3 support, which was used for these platforms.
> Introduce quirks to hardcode them for Linux as well.
>
> As this property is now "standardized", OEM systems using AMD Cezanne and
> newer APU's have adopted this property, and quirks like this should not be
> necessary.
>
> CC: Julian Sikorski <belegdol at gmail.com>
> CC: Shyam-sundar S-k <Shyam-sundar.S-k at amd.com>
> CC: Alexander Deucher <Alexander.Deucher at amd.com>
> CC: Rafael J. Wysocki <rjw at rjwysocki.net>
> CC: Prike Liang <prike.liang at amd.com>
> Link: https://docs.microsoft.com/en-us/windows-hardware/design/component-guidelines/power-management-for-storage-hardware-devices-intro
> Signed-off-by: Mario Limonciello <mario.limonciello at amd.com>
> ---

It's unfortunate these systems have already shipped. I'm guessing they
can't have their firmware updated either. So I guess it's the best
option for now.

Acked-by: Raul E Rangel <rrangel at chromium.org>