[PATCH v7 00/23] nova-core: Add memory management support

[Joel Fernandes <joelagnelf@nvidia.com>]

This series adds support for nova-core memory management, including VRAM
allocation, PRAMIN, VMM, page table walking, and BAR 1 read/writes.
These are critical for channel management, vGPU, and all memory
management uses.

These patches depend on the following preparatory patches:
https://lore.kernel.org/all/20260218205507.689429-1-joelagnelf@nvidia.com/T/#t

All patches (including the preparatory patches from the other series) can
be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git (branch nova/mm or tag: nova-mm-v7-20260218)

Earlier series of these patches:
https://lore.kernel.org/linux-fbdev/DG0MRL6T7ACW.25G3GLJMP7PN1@kernel.org/T/#t
https://lore.kernel.org/linux-fbdev/20260210233204.790524-1-joelagnelf@nvidia.com/

Joel Fernandes (23):
  nova-core: mm: Add support to use PRAMIN windows to write to VRAM
  docs: gpu: nova-core: Document the PRAMIN aperture mechanism
  nova-core: Add BAR1 aperture type and size constant
  nova-core: gsp: Add BAR1 PDE base accessors
  nova-core: mm: Add common memory management types
  nova-core: mm: Add common types for all page table formats
  nova-core: mm: Add MMU v2 page table types
  nova-core: mm: Add MMU v3 page table types
  nova-core: mm: Add unified page table entry wrapper enums
  nova-core: mm: Add TLB flush support
  nova-core: mm: Add GpuMm centralized memory manager
  nova-core: mm: Add page table walker for MMU v2/v3
  nova-core: mm: Add Virtual Memory Manager
  nova-core: mm: Add virtual address range tracking to VMM
  nova-core: mm: Add multi-page mapping API to VMM
  nova-core: mm: Add BAR1 user interface
  nova-core: gsp: Return GspStaticInfo and FbLayout from boot()
  nova-core: mm: Add BAR1 memory management self-tests
  nova-core: mm: Add PRAMIN aperture self-tests
  nova-core: gsp: Extract usable FB region from GSP
  nova-core: fb: Add usable_vram field to FbLayout
  nova-core: mm: Use usable VRAM region for buddy allocator
  nova-core: mm: Add BarUser to struct Gpu and create at boot

 Documentation/gpu/nova/core/pramin.rst     | 125 ++++++
 Documentation/gpu/nova/index.rst           |   1 +
 drivers/gpu/nova-core/Kconfig              |  10 +
 drivers/gpu/nova-core/driver.rs            |   9 +-
 drivers/gpu/nova-core/fb.rs                |  23 +-
 drivers/gpu/nova-core/gpu.rs               | 135 +++++-
 drivers/gpu/nova-core/gsp/boot.rs          |  22 +-
 drivers/gpu/nova-core/gsp/commands.rs      |  18 +-
 drivers/gpu/nova-core/gsp/fw/commands.rs   |  38 ++
 drivers/gpu/nova-core/mm/bar_user.rs       | 318 ++++++++++++++
 drivers/gpu/nova-core/mm/mod.rs            | 241 +++++++++++
 drivers/gpu/nova-core/mm/pagetable/mod.rs  | 479 +++++++++++++++++++++
 drivers/gpu/nova-core/mm/pagetable/ver2.rs | 199 +++++++++
 drivers/gpu/nova-core/mm/pagetable/ver3.rs | 302 +++++++++++++
 drivers/gpu/nova-core/mm/pagetable/walk.rs | 213 +++++++++
 drivers/gpu/nova-core/mm/pramin.rs         | 454 +++++++++++++++++++
 drivers/gpu/nova-core/mm/tlb.rs            |  92 ++++
 drivers/gpu/nova-core/mm/vmm.rs            | 473 ++++++++++++++++++++
 drivers/gpu/nova-core/nova_core.rs         |   1 +
 drivers/gpu/nova-core/regs.rs              |  38 ++
 20 files changed, 3182 insertions(+), 9 deletions(-)
 create mode 100644 Documentation/gpu/nova/core/pramin.rst
 create mode 100644 drivers/gpu/nova-core/mm/bar_user.rs
 create mode 100644 drivers/gpu/nova-core/mm/mod.rs
 create mode 100644 drivers/gpu/nova-core/mm/pagetable/mod.rs
 create mode 100644 drivers/gpu/nova-core/mm/pagetable/ver2.rs
 create mode 100644 drivers/gpu/nova-core/mm/pagetable/ver3.rs
 create mode 100644 drivers/gpu/nova-core/mm/pagetable/walk.rs
 create mode 100644 drivers/gpu/nova-core/mm/pramin.rs
 create mode 100644 drivers/gpu/nova-core/mm/tlb.rs
 create mode 100644 drivers/gpu/nova-core/mm/vmm.rs

-- 
2.34.1