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gpu: nova-core: add Falcon HAL method load_method()

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Some GPUs do not support using DMA to transfer code/data from system
memory to Falcon memory, and instead must use programmed I/O (PIO).
Add a function to the Falcon HAL to indicate whether a given GPU's
Falcons support DMA for this purpose.

Signed-off-by: Timur Tabi <ttabi@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260122222848.2555890-10-ttabi@nvidia.com
[acourbot@nvidia.com: add short code to call into the HAL.]
[acourbot@nvidia.com: make `dma_load` private as per feedback.]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
This commit is contained in:
Timur Tabi
2026-01-22 16:28:44 -06:00
committed by Alexandre Courbot
parent a75718afc9
commit ab2aad252f
6 changed files with 34 additions and 3 deletions
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2
drivers/gpu/nova-core/gsp/boot.rs
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@@ -183,7 +183,7 @@ impl super::Gsp {
);
sec2_falcon.reset(bar)?;
sec2_falcon.dma_load(bar, &booter_loader)?;
sec2_falcon.load(bar, &booter_loader)?;
let wpr_handle = wpr_meta.dma_handle();
let (mbox0, mbox1) = sec2_falcon.boot(
bar,