wireguard-linux/drivers/gpu/nova-core/mctp.rs, branch stableWireGuard for the Linux kernelhttps://git.zx2c4.com/wireguard-linux/atom/drivers/gpu/nova-core/mctp.rs?h=stable2026-07-23T23:15:43Zgpu: nova-core: read vGPU mode from FSP via PRC protocol2026-07-23T23:15:43ZZhi Wangzhiw@nvidia.com2026-07-22T07:39:10Zurn:sha1:29073113cf0044fd05dd0b4318421e91b8de8542
vGPU boot needs to know whether firmware reports vGPU mode as active.
FSP's Management Partition exposes PRC (Product Reconfiguration Control)
as an API for reading device configuration knobs without firmware
updates. The vGPU mode knob is one such configuration value.
Add typed PRC request and response payloads for the vGPU mode object,
add the PRC NVDM type, and parse the returned knob value into VgpuMode.
Signed-off-by: Zhi Wang <zhiw@nvidia.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Link: https://patch.msgid.link/20260722073913.1807677-4-zhiw@nvidia.com
[ FspPrcMessage is small and short-lived; stack-allocate it instead of
using KBox. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
gpu: nova-core: convert to kernel bitfield macro2026-07-03T01:55:17ZAlexandre Courbotacourbot@nvidia.com2026-07-01T00:15:30Zurn:sha1:064375c89bd100809e04f6cfb01f40bca3c20af6
Replace uses of the Nova-local `bitfield!` macro with the kernel one.
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260701-nova-bitfield-v2-1-2e949bf1836c@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
gpu: nova-core: Hopper/Blackwell: add FSP Chain of Trust boot2026-06-03T14:52:22ZJohn Hubbardjhubbard@nvidia.com2026-06-03T07:30:23Zurn:sha1:d317e4585fa39bcee4d075f5c485494b0f238713
Build and send the Chain of Trust message to FSP, bundling the
DMA-coherent boot parameters that FSP reads at boot time.
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Link: https://patch.msgid.link/20260603-b4-blackwell-v13-6-d9f3a06939e0@nvidia.com
[acourbot: rename `frts_offset` to `frts_vidmem_offset`.]
[acourbot: add note about frts_sysmem_* CoT members.]
Co-developed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
gpu: nova-core: add MCTP/NVDM protocol types for firmware communication2026-06-03T13:11:24ZJohn Hubbardjhubbard@nvidia.com2026-06-03T07:30:20Zurn:sha1:944a0fedca7ed226685d3b965dd1371ff34b3017
Add the MCTP (Management Component Transport Protocol) and NVDM (NVIDIA
Data Model) wire-format types used for communication between the kernel
driver and GPU firmware processors.
This includes typed MCTP transport headers, NVDM message headers, and
NVDM message type identifiers. Both the FSP boot path and the upcoming
GSP RPC message queue share this protocol layer.
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260603-b4-blackwell-v13-3-d9f3a06939e0@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>