Commit 9641f052 authored by Joel Fernandes's avatar Joel Fernandes Committed by Alexandre Courbot
Browse files

gpu: nova-core: sequencer: Implement basic core operations 



These opcodes implement various falcon-related boot operations: reset,
start, wait-for-halt.

Signed-off-by: default avatarJoel Fernandes <joelagnelf@nvidia.com>
Reviewed-by: default avatarLyude Paul <lyude@redhat.com>
Signed-off-by: default avatarAlexandre Courbot <acourbot@nvidia.com>
Message-ID: <20251114195552.739371-11-joelagnelf@nvidia.com>
parent e386680e

drivers/gpu/nova-core/gsp/sequencer.rs

+19 −0
Original line number Diff line number Diff line
@@ -76,6 +76,9 @@ pub(crate) enum GspSeqCmd { 
    RegPoll(fw::RegPollPayload),

    DelayUs(fw::DelayUsPayload),

    RegStore(fw::RegStorePayload),

    CoreReset,

    CoreStart,

    CoreWaitForHalt,

}



impl GspSeqCmd {
@@ -110,6 +113,9 @@ pub(crate) fn new(data: &[u8], dev: &device::Device) -> Result<(Self, usize)> { 
                let size = opcode_size + size_of_val(&payload);

                (GspSeqCmd::RegStore(payload), size)

            }

            fw::SeqBufOpcode::CoreReset => (GspSeqCmd::CoreReset, opcode_size),

            fw::SeqBufOpcode::CoreStart => (GspSeqCmd::CoreStart, opcode_size),

            fw::SeqBufOpcode::CoreWaitForHalt => (GspSeqCmd::CoreWaitForHalt, opcode_size),

            _ => return Err(EINVAL),

        };
@@ -214,6 +220,19 @@ fn run(&self, seq: &GspSequencer<'_>) -> Result { 
            GspSeqCmd::RegPoll(cmd) => cmd.run(seq),

            GspSeqCmd::DelayUs(cmd) => cmd.run(seq),

            GspSeqCmd::RegStore(cmd) => cmd.run(seq),

            GspSeqCmd::CoreReset => {

                seq.gsp_falcon.reset(seq.bar)?;

                seq.gsp_falcon.dma_reset(seq.bar);

                Ok(())

            }

            GspSeqCmd::CoreStart => {

                seq.gsp_falcon.start(seq.bar)?;

                Ok(())

            }

            GspSeqCmd::CoreWaitForHalt => {

                seq.gsp_falcon.wait_till_halted(seq.bar)?;

                Ok(())

            }

        }

    }

}