Commit Graph

5 Commits

Author SHA1 Message Date
Gary Guo
99676aed1f gpu: nova-core: move lifetime to Bar0
Currently Nova code uses `&'a Bar0` a lot. This is `&'a Mmio`, where `Mmio`
represents an owned MMIO region; this type only exists as a target for
`Deref` so `Bar` and `IoMem` can share code and should be avoided to be
named directly. The upcoming I/O projection series would make `Io` trait
much simpler to implement, and thus the owned MMIO type would be removed
in favour of direct `Io` implementation on `Bar` and `IoMem`.

Add lifetime parameter to `Bar0<'a>` and change it to be alias of `&'a
pci::Bar<'a, ..>`. This also prepares Nova core so that when I/O projection
series land, this could be changed to using a MMIO view type directly which
avoids double indirection.

Signed-off-by: Gary Guo <gary@garyguo.net>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260602170416.2268531-1-gary@kernel.org
[ Rebase onto latest drm-rust-next (Blackwell enablement). - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-06-03 22:10:51 +02:00
John Hubbard
ee9414e605 gpu: nova-core: Hopper/Blackwell: new location for PCI config mirror
Hopper and Blackwell GPUs moved the PCI config space mirror from
0x088000 to 0x092000. Select the correct address per architecture
when building the GSP system info command.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260602032111.224790-3-jhubbard@nvidia.com
Co-developed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-06-02 22:33:15 +09:00
John Hubbard
3411e9aac6 gpu: nova-core: set DMA mask width based on GPU architecture
Replace the hardcoded 47-bit DMA mask with a GPU HAL method that
provides the correct value for the architecture.

Set the DMA mask in Gpu::new(). Gpu owns all DMA allocations for
the device, so no concurrent allocations can exist while the
constructor is still running.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260602032111.224790-2-jhubbard@nvidia.com
Co-developed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-06-02 22:33:15 +09:00
John Hubbard
11a63a5335 gpu: nova-core: Hopper/Blackwell: skip GFW boot waiting
Hopper and Blackwell GPUs use FSP-based secure boot and do not
require waiting for GFW_BOOT completion. Add a Gh100 GPU HAL that
returns Ok(()) for wait_gfw_boot_completion(), and route Hopper
and Blackwell architectures to it.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260411024953.473149-8-jhubbard@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-04-30 10:02:55 +09:00
John Hubbard
8ff326fa0a gpu: nova-core: move GFW boot wait into a GPU HAL
Introduce a GpuHal trait and per-family dispatch so GPU boot
behavior can vary by architecture. Move wait_gfw_boot_completion()
from the standalone gfw module into gpu/hal/tu102.rs as the first
GpuHal implementation. All architectures currently dispatch to this
implementation, preserving existing behavior.

Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260411024953.473149-7-jhubbard@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
2026-04-30 10:02:55 +09:00