Merge tag 'drm-rust-next-2025-09-16' of https://gitlab.freedesktop.org/drm/rust/kernel into drm-next

DRM Rust changes for v6.18

Alloc
  - Add BorrowedPage type and AsPageIter trait
  - Implement Vmalloc::to_page() and VmallocPageIter
  - Implement AsPageIter for VBox and VVec

DMA & Scatterlist
  - Add dma::DataDirection and type alias for dma_addr_t
  - Abstraction for struct scatterlist and struct sg_table

DRM
  - In the DRM GEM module, simplify overall use of generics, add
    DriverFile type alias and drop Object::SIZE.

Nova (Core)
  - Various register!() macro improvements (paving the way for lifting
    it to common driver infrastructure)
  - Minor VBios fixes and refactoring
  - Minor firmware request refactoring
  - Advance firmware boot stages; process Booter and patch its
    signature, process GSP and GSP bootloader
  - Switch development fimrware version to r570.144
  - Add basic firmware bindings for r570.144
  - Move GSP boot code to its own module
  - Clean up and take advantage of pin-init features to store most of
    the driver's private data within a single allocation
  - Update ARef import from sync::aref
  - Add website to MAINTAINERS entry

Nova (DRM)
  - Update ARef import from sync::aref
  - Add website to MAINTAINERS entry

Pin-Init
  - Merge pin-init PR from Benno
    - `#[pin_data]` now generates a `*Projection` struct similar to the
      `pin-project` crate.

    - Add initializer code blocks to `[try_][pin_]init!` macros: make
      initializer macros accept any number of `_: {/* arbitrary code
      */},` & make them run the code at that point.

    - Make the `[try_][pin_]init!` macros expose initialized fields via
      a `let` binding as `&mut T` or `Pin<&mut T>` for later fields.

Rust
  - Various methods for AsBytes and FromBytes traits

Tyr
  - Initial Rust driver skeleton for ARM Mali GPUs.
    - It can power up the GPU, query for GPU metatdata through MMIO and
      provide the metadata to userspace via DRM device IOCTL (struct
      drm_panthor_dev_query).

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: "Danilo Krummrich" <dakr@kernel.org>
Link: https://lore.kernel.org/r/DCUC4SY6SRBD.1ZLHAIQZOC6KG@kernel.org

1 files changed, 56 insertions, 0 deletions

diff --git a/drivers/gpu/drm/tyr/file.rs b/drivers/gpu/drm/tyr/file.rs
new file mode 100644
index 000000000000..0ef432947b73
--- /dev/null
+++ b/drivers/gpu/drm/tyr/file.rs
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0 or MIT
+
+use kernel::drm;
+use kernel::prelude::*;
+use kernel::uaccess::UserSlice;
+use kernel::uapi;
+
+use crate::driver::TyrDevice;
+use crate::TyrDriver;
+
+#[pin_data]
+pub(crate) struct File {}
+
+/// Convenience type alias for our DRM `File` type
+pub(crate) type DrmFile = drm::file::File<File>;
+
+impl drm::file::DriverFile for File {
+    type Driver = TyrDriver;
+
+    fn open(_dev: &drm::Device<Self::Driver>) -> Result<Pin<KBox<Self>>> {
+        KBox::try_pin_init(try_pin_init!(Self {}), GFP_KERNEL)
+    }
+}
+
+impl File {
+    pub(crate) fn dev_query(
+        tdev: &TyrDevice,
+        devquery: &mut uapi::drm_panthor_dev_query,
+        _file: &DrmFile,
+    ) -> 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(&tdev.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(&tdev.gpu_info)?;
+
+                    Ok(0)
+                }
+                _ => Err(EINVAL),
+            }
+        }
+    }
+}