[PATCH v3 0/8] gpu: nova-core: boot GSP with vGPU enabled

[Zhi Wang]

Booting up GSP with vGPU enabled is part of the first milestone (M1)
together with the Rust fwctl abstraction [1] and the nova-core fwctl
driver [2] for upstream vGPU support. It allows us to validate the basic
GSP boot flow with vGPU enabled and upload vGPU types even before the
remaining nova-core dependencies are ready. The nova-vgpu WIP patches
for all milestones can be found at [3].

This version is based on drm-rust-next plus Alexandre's GSP boot process
consolidation series [4].

v3:

- Split the FSP response header rename from the FSP PRC vGPU mode query
  into a separate patch.
- Change pci_sriov_get_totalvfs() to return unsigned int on the C side
  while keeping the Rust helper as u16.
- Move the vGPU capability gate into a dedicated vgpu::hal module.
- Represent detected vGPU state as VgpuState instead of separate
  enabled/total_vfs accessors.
- Keep total_vfs values below 2 on the disabled path, with an explicit
  comment for the current single-VF limitation.
- Use the generated 570.144 GSP_FW_HEAP_SIZE_VGPU_DEFAULT binding for
  vGPU WPR2 heap sizing, and keep unsupported 0/1-VF states out of the
  vGPU heap path through VgpuState.

v2:

- Rebase on top of Alexandre's GSP boot process consolidation series.
- Drop the FSP response, FSP documentation, and GspBootContext patches
  that are already in drm-rust-next or superseded by the prerequisite
  boot consolidation series.
- Change pci_sriov_get_totalvfs() to return u16 and update existing C
  callers accordingly.
- Make the Rust sriov_get_totalvfs() helper return u16 directly.
- Rework the FSP PRC vGPU mode query to use typed subcommand, object ID,
  flags, request, and response structures.
- Move vGPU state detection before GSP boot into a read-only VgpuManager,
  avoiding Mutex/Cell based mutation during boot.
- Add a HAL method for the vGPU capability gate.
- Split the SetRegistry changes into a dynamic-entry refactor and the
  RMSetSriovMode functional change.
- Rework WPR2 heap sizing to consume VgpuManager, keep the vGPU heap-size
  helper in gsp/fw.rs, and drop the 1VM heap-size special case.

[1] https://lore.kernel.org/rust-for-linux/20260217204909.211793-1-zhiw@xxxxxxxxxx/
[2] https://lore.kernel.org/rust-for-linux/20260305190936.398590-1-zhiw@xxxxxxxxxx/
[3] https://github.com/zhiwang-nvidia/nova-core/tree/zhi/nova-vgpu-wip
[4] https://lore.kernel.org/all/20260629-nova-bootcontext-v4-0-5539d8469590@xxxxxxxxxx/

Zhi Wang (8):
  PCI/IOV: Return unsigned int from pci_sriov_get_totalvfs()
  rust: pci: add sriov_get_totalvfs() helper
  gpu: nova-core: fsp: rename FSP response header type
  gpu: nova-core: read vGPU mode from FSP via PRC protocol
  gpu: nova-core: add vGPU preludes
  gpu: nova-core: build SetRegistry entries dynamically
  gpu: nova-core: set RMSetSriovMode for vGPU
  gpu: nova-core: reserve vGPU WPR2 heap

 drivers/gpu/nova-core/fb.rs                   |  25 ++-
 drivers/gpu/nova-core/fsp.rs                  | 189 +++++++++++++++++-
 drivers/gpu/nova-core/gpu.rs                  |   7 +
 drivers/gpu/nova-core/gsp.rs                  |   2 +
 drivers/gpu/nova-core/gsp/boot.rs             |  17 +-
 drivers/gpu/nova-core/gsp/commands.rs         |  80 +++++---
 drivers/gpu/nova-core/gsp/fw.rs               |   5 +
 .../gpu/nova-core/gsp/fw/r570_144/bindings.rs |   1 +
 drivers/gpu/nova-core/mctp.rs                 |   3 +
 drivers/gpu/nova-core/nova_core.rs            |   1 +
 drivers/gpu/nova-core/vgpu.rs                 |  79 ++++++++
 drivers/gpu/nova-core/vgpu/hal.rs             |  45 +++++
 drivers/pci/iov.c                             |   2 +-
 include/linux/pci.h                           |   4 +-
 rust/kernel/pci.rs                            |  11 +
 15 files changed, 425 insertions(+), 46 deletions(-)
 create mode 100644 drivers/gpu/nova-core/vgpu.rs
 create mode 100644 drivers/gpu/nova-core/vgpu/hal.rs


base-commit: 05508fc305cb0311ee21f9629a41f821f5e0216f
-- 
2.51.0