61 lines
1.6 KiB
Rust
61 lines
1.6 KiB
Rust
// SPDX-License-Identifier: GPL-2.0 or MIT
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use kernel::{
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drm,
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prelude::*,
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uaccess::UserSlice,
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uapi, //
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};
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use crate::driver::{
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TyrDrmDevice,
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TyrDrmDriver, //
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};
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#[pin_data]
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pub(crate) struct TyrDrmFileData {}
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/// Convenience type alias for our DRM `File` type
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pub(crate) type TyrDrmFile = drm::file::File<TyrDrmFileData>;
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impl drm::file::DriverFile for TyrDrmFileData {
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type Driver = TyrDrmDriver;
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fn open(_dev: &drm::Device<Self::Driver>) -> Result<Pin<KBox<Self>>> {
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KBox::try_pin_init(try_pin_init!(Self {}), GFP_KERNEL)
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}
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}
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impl TyrDrmFileData {
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pub(crate) fn dev_query(
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ddev: &TyrDrmDevice,
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devquery: &mut uapi::drm_panthor_dev_query,
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_file: &TyrDrmFile,
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) -> Result<u32> {
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if devquery.pointer == 0 {
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match devquery.type_ {
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uapi::drm_panthor_dev_query_type_DRM_PANTHOR_DEV_QUERY_GPU_INFO => {
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devquery.size = core::mem::size_of_val(&ddev.gpu_info) as u32;
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Ok(0)
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}
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_ => Err(EINVAL),
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}
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} else {
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match devquery.type_ {
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uapi::drm_panthor_dev_query_type_DRM_PANTHOR_DEV_QUERY_GPU_INFO => {
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let mut writer = UserSlice::new(
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UserPtr::from_addr(devquery.pointer as usize),
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devquery.size as usize,
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)
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.writer();
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writer.write(&ddev.gpu_info)?;
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Ok(0)
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}
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_ => Err(EINVAL),
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}
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}
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}
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}
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