drm/tyr: firmware loading and MCU boot support

This series adds firmware loading and MCU boot support to the Tyr DRM
driver. It includes:
 - A parser for the Mali CSF firmware binary format
 - A kernel-managed BO type (KernelBo) for internal driver allocations
 - GPU virtual memory (VM) integration using drm_gpuvm
 - An MMU module and a generic slot manager
 - Shmem-backed GEM support for Tyr
 - Loading firmware, VM activation, and MCU boot at probe()
 - Initialization of Command Stream Frontend (CSF) firmware interfaces

Dependencies:
 - [PATCH v12 0/5] Rust bindings for gem shmem
    https://lore.kernel.org/rust-for-linux/20260421235346.672...

 - [PATCH v6 0/5] Rust GPUVM immediate mode
    https://lore.kernel.org/rust-for-linux/20260409-gpuvm-rus...

 - [PATCH v6 0/5] Introduce DeviceContext
    https://lore.kernel.org/rust-for-linux/20260320233645.950...

 - [PATCH v5 0/6] drm/tyr: Use register! macro
    https://lore.kernel.org/rust-for-linux/20260409-b4-tyr-us...

Other Prerequisites:
 This series also depends on additional prerequisite fixes not included in
 this posting. The full stack (base + prerequisites + this series) is
 available here:
  https://gitlab.freedesktop.org/dbrouwer/linux/-/tree/dbro...
    
  Development history / discussion:
   https://gitlab.freedesktop.org/panfrost/linux/-/merge_req...
    

---
Changes in v4:
 New commits:
  - drm/tyr: program CSF global interface
  - rust: time: add arch_timer_get_rate wrapper
  - drm/tyr: add CSF firmware interface support
  - drm/tyr: validate presence of CSF shared section
  - drm/tyr: wait for global interface readiness
  - drm/tyr: add Job IRQ handling
  - drm/tyr: add Wait type for GPU events

 The existing commits from v3 remain unchanged.
 - Link to v3: https://lore.kernel.org/r/20260413-b4-fw-boot-v3-v3-0-b42...
    
Changes in v3:
 New commits:
  - drm/tyr: remove unused device from platform data
  - drm/tyr: use shmem GEM object type in TyrDrmDriver
    
 drm/tyr: select required dependencies in Kconfig
  - Rename commit since the dependencies are not limited to DRM.
  - Select new RUST_DRM_GEM_SHMEM_HELPER instead of DRM_GEM_SHMEM_HELPER.
    
 drm/tyr: set DMA mask using GPU physical address
  - Use register macro to read pa_bits instead of separate helper function.
    
 drm/tyr: add MMU module
  - Switch MMU code to typed register APIs (TRANSCFG, MEMATTR, STATUS, LOCKADDR, etc.).
  - Use MmuCommand enum for MMU commands instead of raw constants.
  - Minor cleanups and renaming (MAX_AS, AS_PRESENT handling).
    
 drm/tyr: add GPU virtual memory module
  - Extract VA/PA bits via typed MMU_FEATURES register.
  - Update the VM code to match the new GPUVM v6 and shmem GEM v10 APIs.
    
 drm/tyr: add a kernel buffer object
  - Reject zero-sized KernelBo allocations up front.
    
 drm/tyr: add firmware loading and MCU boot support
  - Use typed GPU control registers.
  - Pass iomem by Arc into Firmware::new() since we store it eventually.
    
  - Link to v2: https://lore.kernel.org/rust-for-linux/20260302232500.244...
    
Changes in v2:
 - The whole series is rebased on drm-rust-next including v7.0-rc1.
 - Each patch has its own changelog.
    
 Link to v1: https://lore.kernel.org/rust-for-linux/20260212013713.304...

Signed-off-by: Deborah Brouwer <deborah.brouwer@collabora.com>

---
Alvin Sun (1):
      drm/tyr: use shmem GEM object type in TyrDrmDriver

Beata Michalska (1):
      drm/tyr: set DMA mask using GPU physical address

Boris Brezillon (5):
      drm/tyr: select required dependencies in Kconfig
      drm/tyr: rename TyrObject to BoData
      drm/tyr: Add generic slot manager
      drm/tyr: add MMU module
      drm/tyr: add GPU virtual memory module

Daniel Almeida (1):
      drm/tyr: add parser for firmware binary

Deborah Brouwer (12):
      drm/tyr: remove unused device from platform data
      drm/tyr: move clock cleanup into Clocks Drop impl
      drm/tyr: add shmem backing for GEM objects
      drm/tyr: add a kernel buffer object
      drm/tyr: add firmware loading and MCU boot support
      drm/tyr: add Wait type for GPU events
      drm/tyr: add Job IRQ handling
      drm/tyr: wait for global interface readiness
      drm/tyr: validate presence of CSF shared section
      drm/tyr: add CSF firmware interface support
      rust: time: add arch_timer_get_rate wrapper
      drm/tyr: program CSF global interface

 drivers/gpu/drm/tyr/Kconfig              |   15 +-
 drivers/gpu/drm/tyr/driver.rs            |  153 +-
 drivers/gpu/drm/tyr/fw.rs                |  352 +++++
 drivers/gpu/drm/tyr/fw/interfaces.rs     | 2243 ++++++++++++++++++++++++++++++
 drivers/gpu/drm/tyr/fw/irq.rs            |  120 ++
 drivers/gpu/drm/tyr/fw/parser.rs         |  532 +++++++
 drivers/gpu/drm/tyr/gem.rs               |  164 ++-
 drivers/gpu/drm/tyr/mmu.rs               |  127 ++
 drivers/gpu/drm/tyr/mmu/address_space.rs |  571 ++++++++
 drivers/gpu/drm/tyr/regs.rs              |  110 ++
 drivers/gpu/drm/tyr/slot.rs              |  436 ++++++
 drivers/gpu/drm/tyr/tyr.rs               |    5 +
 drivers/gpu/drm/tyr/vm.rs                |  805 +++++++++++
 drivers/gpu/drm/tyr/wait.rs              |  125 ++
 rust/kernel/time.rs                      |   29 +
 15 files changed, 5752 insertions(+), 35 deletions(-)
---
base-commit: 52c3c3b7eb11d596526e523bf57f8b3cbdcb24d8
change-id: 20260424-b4-fw-boot-v4-4b5f09bf13e8

Best regards,
-- 
Deborah Brouwer <deborah.brouwer@collabora.com>