Merge tag 'drm-rust-next-2026-08-08' of https://gitlab.freedesktop.org/drm/rust/kernel into drm-next

DRM Rust changes for v7.3-rc1

- I/O (shared from driver-core tree via signed tag rust-io-7.3-rc1):

  - Rework of I/O types: make I/O regions typed (with a
    dynamically-sized Region type for the existing untyped case), create
    view types representing subregions of a mapped I/O region, and add
    io_project!() for safely creating subviews.

  - Split Io into a base trait (IoBase) and an extension trait (Io) with
    a blanket implementation, preventing implementers from overriding
    provided methods that unsafe code relies on.

  - Add a SysMem backend for shared system memory with volatile access,
    and make Coherent implement Io via an I/O view type.  Add copying
    methods (memcpy_{from,to}io).

  - Replace dma_read!/dma_write! with io_read!/io_write!; drop the old
    macros.

- DRM:

  - RegistrationGuard and RegistrationData:
    - Rework DeviceContext typestates: rename Uninit to Normal, add an
      Ioctl context, restrict AlwaysRefCounted to Normal for both Device
      and GEM Object, and establish a Deref chain from Registered to
      Normal.

    - Introduce RegistrationGuard, a guard representing a
      drm_dev_enter/exit SRCU critical section that proves the DRM
      device is registered, which implies the parent bus device is still
      bound.

    - Add RegistrationData as a GAT on drm::Driver. The data does not
      outlive driver unbind, so it can capture lifetime-annotated device
      resources and references. Accessible through the guard via a
      closure with HRTB lifetime.

    - Wrap ioctl dispatch in RegistrationGuard (returning ENODEV if
      unplugged) and pass registration data to handlers.

    - Add Driver::ParentDevice associated type.

  - Fix unbounded lifetimes in ioctl handler arguments.

  - Fix a race in drm_dev_register() where a partial failure allowed
    in-flight ioctls to proceed while the error path tore down
    resources.

  - GEM shmem: add DmaResvGuard helper, vmap functions, and sg_table()
    accessor.

  - GPUVM: require Send + Sync for the driver's associated data,
    implement Send and Sync for GpuVaAlloc and GpuVmBo, add SmContext
    lifetime bound, update DriverGpuVm for DeviceContext.

- Nova:

  - nova-core / nova-drm cross-crate dependency:
    - Build nova-core and nova-drm from drivers/gpu/Makefile for build
      ordering, export nova-core Rust symbols for nova-drm. Workaround
      until the build system supports Rust cross-crate dependencies
      natively.

  - GSP boot process consolidation:
    - Introduce GspBootContext to bundle common boot parameters,
      replacing per-argument threading. Separate context and GPU
      lifetimes to support mutable borrows of GPU subdevices.

    - Turn FWSEC execution into a HAL method, make FWSEC bootloader
      usage a property of the TU102 HAL (GA102+ gets its own instance
      with it disabled). Move firmware file selection to the GSP HAL.

    - Store the Fsp instance in Gpu (lifetime tied to the GPU, not just
      a single boot invocation). Move GSP state and unload bundle into a
      pinned subobject for reliable teardown on partial init failure.

  - Boot GSP with vGPU enabled:
    - Add PRC (Product Reconfiguration Control) protocol to query device
      configuration from the FSP. Read vGPU mode, detect and store vGPU
      state.
    - Set RMSetSriovMode registry entry and reserve the larger WPR2 heap
      required when vGPU is enabled.
    - Build SetRegistry entries dynamically.

  - TLV firmware image format:
    - Add a TLV (type-length-value) parser for the new firmware image
      format. TLV files use unversioned filenames with a .tlv suffix,
      start with "NVFW" magic, and contain tagged blocks with 4-byte
      aligned payloads.
    - Transition all firmware loading (booter, gsp, gen_bootloader, fsp)
      to TLV images.
    - Note: this requires a development firmware not in linux-firmware
      [1]; this is temporary and serves the transition to r615.

  - Hopper/Blackwell fixes and cleanups:
    - Correct FRTS vidmem offset calculation, split FbLayout into FSP
      and non-FSP versions, fix Blackwell flush address composition, use
      absolute FBHUB0 flush registers on Blackwell, use correct sysmem
      flush registers on Hopper.
    - Harden FSP messaging: limit receive allocation size, catch bogus
      queue pointers, ensure DMA allocation lifetimes for FMC boot and
      LibOS, wait for RISC-V HALTED on unload.

  - I/O projection adoption:
    - Use io_project!() for PTE array, message queues, and Falcon DMA
      transfer bounds checking.

  - Misc:
    - Keep unloading if FWSEC-SB fails during Turing/Ampere GSP reset.
    - Don't declare booter firmware for FSP chipsets.
    - Fix packed registry table size.
    - Extract and display usable FB regions from GSP.
    - Store bar and dev directly in Falcon, simplifying the API.
    - Parse VBIOS structs via zerocopy.
    - Convert to kernel bitfield macro, remove local one.
    - Move register definitions into sub-modules.
    - Add FSP and PRC protocol documentation.

- Tyr:

  - Firmware loading and MCU boot:
    - Add a generic slot manager for dynamically allocating limited
      hardware slots to software seats, with lazy eviction under
      contention.
    - Add MMU support wrapping the slot manager for address-space slot
      allocation, with MAIR-to-MEMATTR translation.
    - Add GPU virtual memory (VM) support using drm_gpuvm with ARM64
      LPAE Stage 1 page tables and 4KB/2MB page sizes.
    - Add a kernel buffer object type for internal driver allocations.
    - Add a parser for the Mali CSF firmware binary format.
    - Add MCU booting: load, parse, and map firmware sections into VM,
      then boot the MCU at probe().

- Cross-subsystem:

  - Add faux::Device type with AsBusDevice support. Allow retrieving a
    bound Device from a Registration.

  - Add device lifetime to IoPageTable.

  - Add Vec::zeroed method.

  - Add firmware::request_into_buf() to load firmware into a
    caller-provided buffer.

  - Rename dma_handle to dma_address in the DMA abstraction.

  - Change pci_sriov_get_totalvfs() return type to unsigned int; add
    Rust helper.

[1] https://github.com/ttabi/linux-firmware-nova

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

From: "Danilo Krummrich" <dakr@kernel.org>
Link: https://patch.msgid.link/DKJQQUOS0PVO.3JPR3MYK4PDVZ@kernel.org

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