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// SPDX-License-Identifier: GPL-2.0
use kernel::{
alloc::flags::*, device, devres::Devres, error::code::*, firmware, fmt, pci, prelude::*,
str::CString, sync::Arc,
};
use crate::driver::Bar0;
use core::fmt::Debug;
/// Enum representing the GPU chipset.
#[derive(Debug)]
pub(crate) enum Chipset {
TU102 = 0x162,
TU104 = 0x164,
TU106 = 0x166,
TU117 = 0x167,
TU116 = 0x168,
GA102 = 0x172,
GA103 = 0x173,
GA104 = 0x174,
GA106 = 0x176,
GA107 = 0x177,
AD102 = 0x192,
AD103 = 0x193,
AD104 = 0x194,
AD106 = 0x196,
AD107 = 0x197,
}
/// Enum representing the GPU generation.
#[derive(Debug)]
pub(crate) enum CardType {
/// Turing
TU100 = 0x160,
/// Ampere
GA100 = 0x170,
/// Ada Lovelace
AD100 = 0x190,
}
/// Structure holding the metadata of the GPU.
#[allow(dead_code)]
pub(crate) struct GpuSpec {
/// Contents of the boot0 register.
boot0: u64,
card_type: CardType,
chipset: Chipset,
/// The revision of the chipset.
chiprev: u8,
}
/// Structure encapsulating the firmware blobs required for the GPU to operate.
#[allow(dead_code)]
pub(crate) struct Firmware {
booter_load: VVec<u8>,
booter_unload: VVec<u8>,
gsp: VVec<u8>,
}
/// Structure holding the resources required to operate the GPU.
#[allow(dead_code)]
#[pin_data]
pub(crate) struct Gpu {
spec: GpuSpec,
/// MMIO mapping of PCI BAR 0
bar: Devres<Bar0>,
fw: Firmware,
}
// TODO replace with something like derive(FromPrimitive)
impl Chipset {
fn from_u32(value: u32) -> Option<Chipset> {
match value {
0x162 => Some(Chipset::TU102),
0x164 => Some(Chipset::TU104),
0x166 => Some(Chipset::TU106),
0x167 => Some(Chipset::TU117),
0x168 => Some(Chipset::TU116),
0x172 => Some(Chipset::GA102),
0x173 => Some(Chipset::GA103),
0x174 => Some(Chipset::GA104),
0x176 => Some(Chipset::GA106),
0x177 => Some(Chipset::GA107),
0x192 => Some(Chipset::AD102),
0x193 => Some(Chipset::AD103),
0x194 => Some(Chipset::AD104),
0x196 => Some(Chipset::AD106),
0x197 => Some(Chipset::AD107),
_ => None,
}
}
}
// TODO replace with something like derive(FromPrimitive)
impl CardType {
fn from_u32(value: u32) -> Option<CardType> {
match value {
0x160 => Some(CardType::TU100),
0x170 => Some(CardType::GA100),
0x190 => Some(CardType::AD100),
_ => None,
}
}
}
impl GpuSpec {
fn new(bar: &Devres<Bar0>) -> Result<GpuSpec> {
let bar = bar.try_access().ok_or(ENXIO)?;
let boot0 = u64::from_le(bar.readq(0));
let chip = ((boot0 & 0x1ff00000) >> 20) as u32;
if boot0 & 0x1f000000 == 0 {
return Err(ENODEV);
}
let chipset = match Chipset::from_u32(chip) {
Some(x) => x,
None => return Err(ENODEV),
};
let card_type = match CardType::from_u32(chip & 0x1f0) {
Some(x) => x,
None => return Err(ENODEV),
};
Ok(Self {
boot0,
card_type,
chipset,
chiprev: (boot0 & 0xff) as u8,
})
}
}
impl Firmware {
fn new(dev: &device::Device, spec: &GpuSpec, ver: &str) -> Result<Firmware> {
let mut chip_name = CString::try_from_fmt(fmt!("{:?}", spec.chipset))?;
chip_name.make_ascii_lowercase();
let fw_booter_load_path =
CString::try_from_fmt(fmt!("nvidia/{}/gsp/booter_load-{}.bin", &*chip_name, ver,))?;
let fw_booter_unload_path =
CString::try_from_fmt(fmt!("nvidia/{}/gsp/booter_unload-{}.bin", &*chip_name, ver))?;
let fw_gsp_path =
CString::try_from_fmt(fmt!("nvidia/{}/gsp/gsp-{}.bin", &*chip_name, ver))?;
let booter_load = firmware::Firmware::request(&fw_booter_load_path, dev)?;
let booter_unload = firmware::Firmware::request(&fw_booter_unload_path, dev)?;
let gsp = firmware::Firmware::request(&fw_gsp_path, dev)?;
Ok(Firmware {
booter_load: booter_load.copy(GFP_KERNEL)?,
booter_unload: booter_unload.copy(GFP_KERNEL)?,
gsp: gsp.copy(GFP_KERNEL)?,
})
}
}
impl Gpu {
pub(crate) fn new(pdev: &pci::Device, bar: Devres<Bar0>) -> Result<Arc<Gpu>> {
let spec = GpuSpec::new(&bar)?;
let fw = Firmware::new(pdev.as_ref(), &spec, "535.113.01")?;
dev_info!(
pdev.as_ref(),
"NVIDIA {:?} ({:#x})",
spec.chipset,
spec.boot0
);
Arc::pin_init(try_pin_init!(Self { spec, bar, fw }), GFP_KERNEL)
}
}
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