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This is needed e.g. for channel allocation. This series adds: - `NV_STATUS` bindings and wrapping `NvStatus` enum (used by RM control RPCs) - The necessary bindings for the RM control RPCs. - `RmControlMsgFunction` to identify individual control commands, like `MsgFunction` for GSP commands. - `SBufferIter::read_to_vec` (using KVVec) for reading large RPC payloads - A `send_rm_control` helper that sends a control and checks its NvStatus - One usage of `send_rm_control`: the `CeGetFaultMethodBufferSize` RPC. This is useful for channel allocation later. Each new RM control command can be added by extending `RmControlMsgFunction`, adding the bindings and wrappers for their parameters, and writing a type-safe wrapper to send and receive the reply for the RM control rpc, using `send_rm_control`. This series applies on latest drm-rust-next with the listed pre-requisites. Signed-off-by: Eliot Courtney --- Changes in v2: - Introduce typed Handle for RM objects. - Improve naming - Improve doc comments - Change SBufferIter to always use KVVec - flush_into_kvec -> read_to_vec - Rebased on latest cmdq locking - Link to v1: https://lore.kernel.org/r/20260227-rmcontrol-v1-0-86648e4869f9@nvidia.com --- Eliot Courtney (9): gpu: nova-core: gsp: add NV_STATUS error code bindings gpu: nova-core: gsp: add NvStatus enum for RM control errors gpu: nova-core: gsp: expose GSP-RM internal client and subdevice handles gpu: nova-core: gsp: add RM control RPC structure binding gpu: nova-core: gsp: add types for RM control RPCs gpu: nova-core: use KVVec for SBufferIter flush gpu: nova-core: gsp: add RM control command infrastructure gpu: nova-core: gsp: add CE fault method buffer size bindings gpu: nova-core: gsp: add CeGetFaultMethodBufferSize RM control command drivers/gpu/nova-core/gsp.rs | 1 + drivers/gpu/nova-core/gsp/commands.rs | 64 ++++ drivers/gpu/nova-core/gsp/fw.rs | 402 ++++++++++++++++++++++ drivers/gpu/nova-core/gsp/fw/commands.rs | 19 +- drivers/gpu/nova-core/gsp/fw/r570_144/bindings.rs | 161 +++++++++ drivers/gpu/nova-core/gsp/fw/rm.rs | 103 ++++++ drivers/gpu/nova-core/gsp/rm.rs | 3 + drivers/gpu/nova-core/gsp/rm/commands.rs | 147 ++++++++ drivers/gpu/nova-core/gsp/sequencer.rs | 4 +- drivers/gpu/nova-core/sbuffer.rs | 6 +- 10 files changed, 904 insertions(+), 6 deletions(-) --- base-commit: d19ab42867ae7c68be84ed957d95712b7934773f change-id: 20260225-rmcontrol-bd8a06fc3a0d prerequisite-message-id: <20260318-cmdq-locking-v5-0-18b37e3f9069@nvidia.com> prerequisite-patch-id: fefd403caf8af386276351dd12397dda8ae8553f prerequisite-patch-id: 3e02192944c4dde97e6895a28371479aa49ddc96 prerequisite-patch-id: 0d4f54098125ee748489a7fcf2ec8ddaf2040bb6 prerequisite-patch-id: 45041e4ac74e3ea76ea8dd0632e7746418bdf822 prerequisite-patch-id: 0506bfdd3d8bb9c6efe7fc9246fc3695f8ffc338 Best regards, -- Eliot Courtney