Booting up GSP with vGPU enabled is part of the first milestone (M1)
together with rust fwctl abstraction [1] and nova-core fwctl driver [2]
for upstream vGPU support, allowing us to validate the basic GSP boot flow
with vGPU enabled, 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].
v3:
- Consolidate GSP boot parameters into GspBootContext struct, passed
through the HAL trait methods instead of individual arguments.
- Add vGPU preludes patch (VgpuManager, Architecture::supports_vgpu,
GspBootContext fields) as preparation for the vGPU boot changes.
- Rebase on top of the latest drm-rust-next.
Dropped patches:
Dependencies still in progress:
- "populate GSP_VF_INFO when vGPU is enabled" - depends on the
ExtSriovCapability abstraction [4] which is still under review and
Gary's on-going io projection work [5].
Ada specific:
- "introduce vgpu_support module param" - select vGPU support based on
module params.
- "load the scrubber ucode when vGPU support is enabled"
v2:
- Adopt early-return style (Dirk).
- Add #ifndef CONFIG_PCI_IOV helper to fix compilation when
CONFIG_PCI_IOV is disabled, per (Alex).
- Change return type from Result<i32> to Result<u16> to match the
PCI spec field width, avoiding try_from at call sites.
- GspVfInfo changed to tuple struct (Alex).
- Use unconditional constructor with Option wrapping instead of
bool parameter. (Alex)
- Use full initialization expression instead of mutating a zeroed
value.
- Use .chain() pattern in GspSetSystemInfo::init() for optional
vGPU info. (Alex)
- Eliminate all magic numbers: add vf_bar_is_64bit() and
read_vf_bar64_addr() to ExtSriovCapability using PCI bindings
constants (PCI_BASE_ADDRESS_MEM_TYPE_MASK, etc.).
- Use KVec<RegistryEntry> for dynamic registry entry construction
instead of hardcoded array (Timur, Joel, Alexandre).
- Replace magic numbers 32/48 with named binding constants
MAX_PARTITIONS_WITH_GFID_32VM / MAX_PARTITIONS_WITH_GFID from
OpenRM (Alex).
- Use read_poll_timeout() instead of single read for scrubber
completion check (Joel).
- Use dev instead of pdev.as_ref() in dev_dbg! (Dirk).
- Change scrubber trigger condition from vgpu_requested to
fb_layout.wpr2_heap.len() > SZ_256M, checking actual heap size
instead of vGPU flag. (Alex).
[1] https://lore.kernel.org/rust-for-linux/20260217204909.211793-1-zhiw@nvidia.com/
[2] https://lore.kernel.org/rust-for-linux/20260305190936.398590-1-zhiw@nvidia.com/
[3] https://github.com/zhiwang-nvidia/nova-core/tree/zhi/nova-vgpu-wip
[4] https://lore.kernel.org/rust-for-linux/20260409185254.3869808-1-zhiw@nvidia.com/
[5] https://lore.kernel.org/rust-for-linux/20260421-io_projection-v2-0-4c251c692ef4@garyguo.net/
Zhi Wang (9):
rust: pci: expose sriov_get_totalvfs() helper
gpu: nova-core: factor out common FSP message header
gpu: nova-core: return FSP response buffer to caller
gpu: nova-core: read vGPU mode from FSP via PRC protocol
gpu: nova-core: add FSP and PRC protocol documentation
gpu: nova-core: consolidate GSP boot parameters into GspBootContext
gpu: nova-core: add vGPU preludes
gpu: nova-core: set RMSetSriovMode when NVIDIA vGPU is enabled
gpu: nova-core: reserve a larger GSP WPR2 heap when vGPU is enabled
Documentation/gpu/nova/core/fsp.rst | 142 +++++++++++++++++
Documentation/gpu/nova/index.rst | 1 +
drivers/gpu/nova-core/fb.rs | 17 +-
drivers/gpu/nova-core/fsp.rs | 207 ++++++++++++++++++++++---
drivers/gpu/nova-core/gpu.rs | 38 ++++-
drivers/gpu/nova-core/gsp.rs | 27 ++++
drivers/gpu/nova-core/gsp/boot.rs | 60 ++++---
drivers/gpu/nova-core/gsp/commands.rs | 93 +++++++----
drivers/gpu/nova-core/gsp/fw.rs | 16 ++
drivers/gpu/nova-core/gsp/hal.rs | 23 +--
drivers/gpu/nova-core/gsp/hal/gh100.rs | 22 ++-
drivers/gpu/nova-core/gsp/hal/tu102.rs | 31 ++--
drivers/gpu/nova-core/mctp.rs | 3 +
drivers/gpu/nova-core/nova_core.rs | 1 +
drivers/gpu/nova-core/vgpu.rs | 47 ++++++
rust/kernel/pci.rs | 12 ++
16 files changed, 608 insertions(+), 132 deletions(-)
create mode 100644 Documentation/gpu/nova/core/fsp.rst
create mode 100644 drivers/gpu/nova-core/vgpu.rs
--
2.51.0