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, 108 insertions, 0 deletions

diff --git a/drivers/gpu/drm/tyr/regs.rs b/drivers/gpu/drm/tyr/regs.rs
new file mode 100644
index 000000000000..f46933aaa221
--- /dev/null
+++ b/drivers/gpu/drm/tyr/regs.rs
@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0 or MIT
+
+// We don't expect that all the registers and fields will be used, even in the
+// future.
+//
+// Nevertheless, it is useful to have most of them defined, like the C driver
+// does.
+#![allow(dead_code)]
+
+use kernel::bits::bit_u32;
+use kernel::device::Bound;
+use kernel::device::Device;
+use kernel::devres::Devres;
+use kernel::prelude::*;
+
+use crate::driver::IoMem;
+
+/// Represents a register in the Register Set
+///
+/// TODO: Replace this with the Nova `register!()` macro when it is available.
+/// In particular, this will automatically give us 64bit register reads and
+/// writes.
+pub(crate) struct Register<const OFFSET: usize>;
+
+impl<const OFFSET: usize> Register<OFFSET> {
+    #[inline]
+    pub(crate) fn read(&self, dev: &Device<Bound>, iomem: &Devres<IoMem>) -> Result<u32> {
+        let value = (*iomem).access(dev)?.read32(OFFSET);
+        Ok(value)
+    }
+
+    #[inline]
+    pub(crate) fn write(&self, dev: &Device<Bound>, iomem: &Devres<IoMem>, value: u32) -> Result {
+        (*iomem).access(dev)?.write32(value, OFFSET);
+        Ok(())
+    }
+}
+
+pub(crate) const GPU_ID: Register<0x0> = Register;
+pub(crate) const GPU_L2_FEATURES: Register<0x4> = Register;
+pub(crate) const GPU_CORE_FEATURES: Register<0x8> = Register;
+pub(crate) const GPU_CSF_ID: Register<0x1c> = Register;
+pub(crate) const GPU_REVID: Register<0x280> = Register;
+pub(crate) const GPU_TILER_FEATURES: Register<0xc> = Register;
+pub(crate) const GPU_MEM_FEATURES: Register<0x10> = Register;
+pub(crate) const GPU_MMU_FEATURES: Register<0x14> = Register;
+pub(crate) const GPU_AS_PRESENT: Register<0x18> = Register;
+pub(crate) const GPU_IRQ_RAWSTAT: Register<0x20> = Register;
+
+pub(crate) const GPU_IRQ_RAWSTAT_FAULT: u32 = bit_u32(0);
+pub(crate) const GPU_IRQ_RAWSTAT_PROTECTED_FAULT: u32 = bit_u32(1);
+pub(crate) const GPU_IRQ_RAWSTAT_RESET_COMPLETED: u32 = bit_u32(8);
+pub(crate) const GPU_IRQ_RAWSTAT_POWER_CHANGED_SINGLE: u32 = bit_u32(9);
+pub(crate) const GPU_IRQ_RAWSTAT_POWER_CHANGED_ALL: u32 = bit_u32(10);
+pub(crate) const GPU_IRQ_RAWSTAT_CLEAN_CACHES_COMPLETED: u32 = bit_u32(17);
+pub(crate) const GPU_IRQ_RAWSTAT_DOORBELL_STATUS: u32 = bit_u32(18);
+pub(crate) const GPU_IRQ_RAWSTAT_MCU_STATUS: u32 = bit_u32(19);
+
+pub(crate) const GPU_IRQ_CLEAR: Register<0x24> = Register;
+pub(crate) const GPU_IRQ_MASK: Register<0x28> = Register;
+pub(crate) const GPU_IRQ_STAT: Register<0x2c> = Register;
+pub(crate) const GPU_CMD: Register<0x30> = Register;
+pub(crate) const GPU_CMD_SOFT_RESET: u32 = 1 | (1 << 8);
+pub(crate) const GPU_CMD_HARD_RESET: u32 = 1 | (2 << 8);
+pub(crate) const GPU_THREAD_FEATURES: Register<0xac> = Register;
+pub(crate) const GPU_THREAD_MAX_THREADS: Register<0xa0> = Register;
+pub(crate) const GPU_THREAD_MAX_WORKGROUP_SIZE: Register<0xa4> = Register;
+pub(crate) const GPU_THREAD_MAX_BARRIER_SIZE: Register<0xa8> = Register;
+pub(crate) const GPU_TEXTURE_FEATURES0: Register<0xb0> = Register;
+pub(crate) const GPU_SHADER_PRESENT_LO: Register<0x100> = Register;
+pub(crate) const GPU_SHADER_PRESENT_HI: Register<0x104> = Register;
+pub(crate) const GPU_TILER_PRESENT_LO: Register<0x110> = Register;
+pub(crate) const GPU_TILER_PRESENT_HI: Register<0x114> = Register;
+pub(crate) const GPU_L2_PRESENT_LO: Register<0x120> = Register;
+pub(crate) const GPU_L2_PRESENT_HI: Register<0x124> = Register;
+pub(crate) const L2_READY_LO: Register<0x160> = Register;
+pub(crate) const L2_READY_HI: Register<0x164> = Register;
+pub(crate) const L2_PWRON_LO: Register<0x1a0> = Register;
+pub(crate) const L2_PWRON_HI: Register<0x1a4> = Register;
+pub(crate) const L2_PWRTRANS_LO: Register<0x220> = Register;
+pub(crate) const L2_PWRTRANS_HI: Register<0x204> = Register;
+pub(crate) const L2_PWRACTIVE_LO: Register<0x260> = Register;
+pub(crate) const L2_PWRACTIVE_HI: Register<0x264> = Register;
+
+pub(crate) const MCU_CONTROL: Register<0x700> = Register;
+pub(crate) const MCU_CONTROL_ENABLE: u32 = 1;
+pub(crate) const MCU_CONTROL_AUTO: u32 = 2;
+pub(crate) const MCU_CONTROL_DISABLE: u32 = 0;
+
+pub(crate) const MCU_STATUS: Register<0x704> = Register;
+pub(crate) const MCU_STATUS_DISABLED: u32 = 0;
+pub(crate) const MCU_STATUS_ENABLED: u32 = 1;
+pub(crate) const MCU_STATUS_HALT: u32 = 2;
+pub(crate) const MCU_STATUS_FATAL: u32 = 3;
+
+pub(crate) const GPU_COHERENCY_FEATURES: Register<0x300> = Register;
+
+pub(crate) const JOB_IRQ_RAWSTAT: Register<0x1000> = Register;
+pub(crate) const JOB_IRQ_CLEAR: Register<0x1004> = Register;
+pub(crate) const JOB_IRQ_MASK: Register<0x1008> = Register;
+pub(crate) const JOB_IRQ_STAT: Register<0x100c> = Register;
+
+pub(crate) const JOB_IRQ_GLOBAL_IF: u32 = bit_u32(31);
+
+pub(crate) const MMU_IRQ_RAWSTAT: Register<0x2000> = Register;
+pub(crate) const MMU_IRQ_CLEAR: Register<0x2004> = Register;
+pub(crate) const MMU_IRQ_MASK: Register<0x2008> = Register;
+pub(crate) const MMU_IRQ_STAT: Register<0x200c> = Register;