From 9641f052230041cdf853357c07e77632b729113f Mon Sep 17 00:00:00 2001 From: Joel Fernandes Date: Fri, 14 Nov 2025 14:55:49 -0500 Subject: [PATCH] gpu: nova-core: sequencer: Implement basic core operations These opcodes implement various falcon-related boot operations: reset, start, wait-for-halt. Signed-off-by: Joel Fernandes Reviewed-by: Lyude Paul Signed-off-by: Alexandre Courbot Message-ID: <20251114195552.739371-11-joelagnelf@nvidia.com> --- drivers/gpu/nova-core/gsp/sequencer.rs | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/gpu/nova-core/gsp/sequencer.rs b/drivers/gpu/nova-core/gsp/sequencer.rs index 970c252f1a03..081d1903e8f8 100644 --- a/drivers/gpu/nova-core/gsp/sequencer.rs +++ b/drivers/gpu/nova-core/gsp/sequencer.rs @@ -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 @@ impl GspSeqCmd { 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 @@ impl GspSeqCmdRunner for GspSeqCmd { 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(()) + } } } } -- 2.47.3