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

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>

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gpu: nova-core: gsp: run the unload bundle if Gsp::boot() fails

If `Gsp::boot` fails, the GSP can be left in a state where boot cannot
be attempted again unless it is reset first.

To avoid this, we

gpu: nova-core: gsp: run the unload bundle if Gsp::boot() fails

If `Gsp::boot` fails, the GSP can be left in a state where boot cannot
be attempted again unless it is reset first.

To avoid this, we want to run the unload bundle whenever `boot` fails to
try and clear the partially-initialized state.

Do this by wrapping the unload bundle into a drop guard up until `boot`
returns. After that, running the unload bundle becomes the
responsibility of the caller.

Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260529-nova-unload-v7-4-678f39209e00@nvidia.com
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>

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gpu: nova-core: run Booter Unloader and FWSEC-SB upon unbinding

When probing the driver, the FWSEC-FRTS firmware creates a WPR2 secure
memory region to store the GSP firmware, and the Booter Loader

gpu: nova-core: run Booter Unloader and FWSEC-SB upon unbinding

When probing the driver, the FWSEC-FRTS firmware creates a WPR2 secure
memory region to store the GSP firmware, and the Booter Loader loads and
starts that firmware into the GSP, making it run in RISC-V mode.

These operations need to be reverted upon unloading, particularly the
WPR2 secure region creation, as its presence prevents the driver from
subsequently probing.

Thus, prepare the Booter Unloader and FWSEC-SB firmware images when
booting the GSP, so they can be executed at unbind time to put the GPU
into a state where it can be probed again.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Co-developed-by: Eliot Courtney <ecourtney@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260529-nova-unload-v7-3-678f39209e00@nvidia.com
[acourbot: `Result<()>` -> `Result`]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>

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gpu: nova-core: gsp: move chipset-specific parts of the boot process into a HAL

Booting the GSP is done differently depending on the architecture. Move
the parts that are chipset-specific under a HA

gpu: nova-core: gsp: move chipset-specific parts of the boot process into a HAL

Booting the GSP is done differently depending on the architecture. Move
the parts that are chipset-specific under a HAL.

This does not change much at the moment, since the differences between
Turing and Ampere are rather benign, but will become critical to
properly support the FSP boot process used by Hopper and Blackwell.

The Hopper/Blackwell support is not merged yet, so their HAL is a stub
for now.

This patch is intended to be a mechanical code extraction with no
behavioral changes.

Reviewed-by: Eliot Courtney <ecourtney@nvidia.com>
Reviewed-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/20260529-nova-unload-v7-1-678f39209e00@nvidia.com
[acourbot: `Result<()>` -> `Result`]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>

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