drivers/gpu/drm/tyr/file.rs
Source file repositories/reference/linux-study-clean/drivers/gpu/drm/tyr/file.rs
File Facts
- System
- Linux kernel
- Corpus path
drivers/gpu/drm/tyr/file.rs- Extension
.rs- Size
- 1617 bytes
- Lines
- 61
- Domain
- Driver Families
- Bucket
- drivers/gpu
- Inferred role
- Driver Families: implementation source
- Status
- source implementation candidate
Why This File Exists
Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
- No C-style include directives detected by the generator.
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0 or MIT
use kernel::{
drm,
prelude::*,
uaccess::UserSlice,
uapi, //
};
use crate::driver::{
TyrDrmDevice,
TyrDrmDriver, //
};
#[pin_data]
pub(crate) struct TyrDrmFileData {}
/// Convenience type alias for our DRM `File` type
pub(crate) type TyrDrmFile = drm::file::File<TyrDrmFileData>;
impl drm::file::DriverFile for TyrDrmFileData {
type Driver = TyrDrmDriver;
fn open(_dev: &drm::Device<Self::Driver>) -> Result<Pin<KBox<Self>>> {
KBox::try_pin_init(try_pin_init!(Self {}), GFP_KERNEL)
}
}
impl TyrDrmFileData {
pub(crate) fn dev_query(
ddev: &TyrDrmDevice,
devquery: &mut uapi::drm_panthor_dev_query,
_file: &TyrDrmFile,
) -> Result<u32> {
if devquery.pointer == 0 {
match devquery.type_ {
uapi::drm_panthor_dev_query_type_DRM_PANTHOR_DEV_QUERY_GPU_INFO => {
devquery.size = core::mem::size_of_val(&ddev.gpu_info) as u32;
Ok(0)
}
_ => Err(EINVAL),
}
} else {
match devquery.type_ {
uapi::drm_panthor_dev_query_type_DRM_PANTHOR_DEV_QUERY_GPU_INFO => {
let mut writer = UserSlice::new(
UserPtr::from_addr(devquery.pointer as usize),
devquery.size as usize,
)
.writer();
writer.write(&ddev.gpu_info)?;
Ok(0)
}
_ => Err(EINVAL),
}
}
}
}
Annotation
- Atlas domain: Driver Families / drivers/gpu.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.