mirror of https://github.com/torvalds/linux.git
55 lines
1.8 KiB
Rust
55 lines
1.8 KiB
Rust
// SPDX-License-Identifier: GPL-2.0
|
|
|
|
use kernel::prelude::*;
|
|
|
|
use crate::driver::Bar0;
|
|
use crate::falcon::{Falcon, FalconBromParams, FalconEngine};
|
|
use crate::gpu::Chipset;
|
|
|
|
mod ga102;
|
|
|
|
/// Hardware Abstraction Layer for Falcon cores.
|
|
///
|
|
/// Implements chipset-specific low-level operations. The trait is generic against [`FalconEngine`]
|
|
/// so its `BASE` parameter can be used in order to avoid runtime bound checks when accessing
|
|
/// registers.
|
|
pub(crate) trait FalconHal<E: FalconEngine>: Sync {
|
|
/// Activates the Falcon core if the engine is a risvc/falcon dual engine.
|
|
fn select_core(&self, _falcon: &Falcon<E>, _bar: &Bar0) -> Result {
|
|
Ok(())
|
|
}
|
|
|
|
/// Returns the fused version of the signature to use in order to run a HS firmware on this
|
|
/// falcon instance. `engine_id_mask` and `ucode_id` are obtained from the firmware header.
|
|
fn signature_reg_fuse_version(
|
|
&self,
|
|
falcon: &Falcon<E>,
|
|
bar: &Bar0,
|
|
engine_id_mask: u16,
|
|
ucode_id: u8,
|
|
) -> Result<u32>;
|
|
|
|
/// Program the boot ROM registers prior to starting a secure firmware.
|
|
fn program_brom(&self, falcon: &Falcon<E>, bar: &Bar0, params: &FalconBromParams) -> Result;
|
|
}
|
|
|
|
/// Returns a boxed falcon HAL adequate for `chipset`.
|
|
///
|
|
/// We use a heap-allocated trait object instead of a statically defined one because the
|
|
/// generic `FalconEngine` argument makes it difficult to define all the combinations
|
|
/// statically.
|
|
pub(super) fn falcon_hal<E: FalconEngine + 'static>(
|
|
chipset: Chipset,
|
|
) -> Result<KBox<dyn FalconHal<E>>> {
|
|
use Chipset::*;
|
|
|
|
let hal = match chipset {
|
|
GA102 | GA103 | GA104 | GA106 | GA107 => {
|
|
KBox::new(ga102::Ga102::<E>::new(), GFP_KERNEL)? as KBox<dyn FalconHal<E>>
|
|
}
|
|
_ => return Err(ENOTSUPP),
|
|
};
|
|
|
|
Ok(hal)
|
|
}
|