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|
// SPDX-License-Identifier: GPL-2.0 or MIT
use core::ops::{
Deref,
DerefMut, //
};
use kernel::{
device::{
Bound,
Device, //
},
io::{
poll,
register::Array,
Io, //
},
prelude::*,
time::Delta,
transmute::AsBytes,
uapi, //
};
use crate::{
driver::IoMem,
regs::{
gpu_control::*,
join_u64, //
}, //
};
/// Struct containing information that can be queried by userspace. This is read from
/// the GPU's registers.
///
/// # Invariants
///
/// - The layout of this struct is identical to the C `struct drm_panthor_gpu_info`.
#[repr(transparent)]
#[derive(Clone, Copy)]
pub(crate) struct GpuInfo(pub(crate) uapi::drm_panthor_gpu_info);
impl GpuInfo {
pub(crate) fn new(io: &IoMem<'_>) -> Self {
Self(uapi::drm_panthor_gpu_info {
gpu_id: io.read(GPU_ID).into_raw(),
gpu_rev: io.read(REVIDR).into_raw(),
csf_id: io.read(CSF_ID).into_raw(),
l2_features: io.read(L2_FEATURES).into_raw(),
tiler_features: io.read(TILER_FEATURES).into_raw(),
mem_features: io.read(MEM_FEATURES).into_raw(),
mmu_features: io.read(MMU_FEATURES).into_raw(),
thread_features: io.read(THREAD_FEATURES).into_raw(),
max_threads: io.read(THREAD_MAX_THREADS).into_raw(),
thread_max_workgroup_size: io.read(THREAD_MAX_WORKGROUP_SIZE).into_raw(),
thread_max_barrier_size: io.read(THREAD_MAX_BARRIER_SIZE).into_raw(),
coherency_features: io.read(COHERENCY_FEATURES).into_raw(),
texture_features: [
io.read(TEXTURE_FEATURES::at(0)).supported_formats().get(),
io.read(TEXTURE_FEATURES::at(1)).supported_formats().get(),
io.read(TEXTURE_FEATURES::at(2)).supported_formats().get(),
io.read(TEXTURE_FEATURES::at(3)).supported_formats().get(),
],
as_present: io.read(AS_PRESENT).into_raw(),
selected_coherency: uapi::drm_panthor_gpu_coherency_DRM_PANTHOR_GPU_COHERENCY_NONE,
shader_present: join_u64(
io.read(SHADER_PRESENT_LO).into_raw(),
io.read(SHADER_PRESENT_HI).into_raw(),
),
l2_present: join_u64(
io.read(L2_PRESENT_LO).into_raw(),
io.read(L2_PRESENT_HI).into_raw(),
),
tiler_present: join_u64(
io.read(TILER_PRESENT_LO).into_raw(),
io.read(TILER_PRESENT_HI).into_raw(),
),
core_features: io.read(CORE_FEATURES).into_raw(),
// Padding must be zero.
pad: 0,
//GPU_FEATURES register is not available; it was introduced in arch 11.x.
gpu_features: 0,
})
}
pub(crate) fn log(&self, dev: &Device<Bound>) {
let gpu_id = GPU_ID::from_raw(self.gpu_id);
let model_name = if let Some(model) = GPU_MODELS.iter().find(|&f| {
f.arch_major == gpu_id.arch_major().get() && f.prod_major == gpu_id.prod_major().get()
}) {
model.name
} else {
"unknown"
};
dev_info!(
dev,
"mali-{} GPU_ID 0x{:x} major 0x{:x} minor 0x{:x} status 0x{:x}",
model_name,
gpu_id.into_raw(),
gpu_id.ver_major().get(),
gpu_id.ver_minor().get(),
gpu_id.ver_status().get()
);
dev_info!(
dev,
"Features: L2:{:#x} Tiler:{:#x} Mem:{:#x} MMU:{:#x} AS:{:#x}",
self.l2_features,
self.tiler_features,
self.mem_features,
self.mmu_features,
self.as_present,
);
dev_info!(
dev,
"shader_present=0x{:016x} l2_present=0x{:016x} tiler_present=0x{:016x}",
self.shader_present,
self.l2_present,
self.tiler_present,
);
}
}
impl Deref for GpuInfo {
type Target = uapi::drm_panthor_gpu_info;
fn deref(&self) -> &Self::Target {
&self.0
}
}
impl DerefMut for GpuInfo {
fn deref_mut(&mut self) -> &mut Self::Target {
&mut self.0
}
}
// SAFETY: `GpuInfo`'s invariant guarantees that it is the same type that is
// already exposed to userspace by the C driver. This implies that it fulfills
// the requirements for `AsBytes`.
//
// This means:
//
// - No implicit padding,
// - No kernel pointers,
// - No interior mutability.
unsafe impl AsBytes for GpuInfo {}
struct GpuModels {
name: &'static str,
arch_major: u32,
prod_major: u32,
}
const GPU_MODELS: [GpuModels; 1] = [GpuModels {
name: "g610",
arch_major: 10,
prod_major: 7,
}];
/// Powers on the l2 block.
pub(crate) fn l2_power_on(dev: &Device, io: &IoMem<'_>) -> Result {
io.write_reg(L2_PWRON_LO::zeroed().with_const_request::<1>());
poll::read_poll_timeout(
|| Ok(io.read(L2_READY_LO)),
|status| status.ready() == 1,
Delta::from_millis(1),
Delta::from_millis(100),
)
.inspect_err(|_| dev_err!(dev, "Failed to power on the GPU."))?;
Ok(())
}
|
