This patchset adds the remaining support required for booting the GSP on Turing.
The biggest change since last revision is a change in how we store falcon firmwares, regardless of the loading method. When DMA was the only option, we used to create a DMA object as early as possible to store the firmware's content, and patched it in-place to avoid doing a copy. In hindsight, this decision was a bit short-sighted as it complicates the PIO path considerably, and ignored the fact that each access to the firmware required an unsafe block. Thus the first patch of this series switches to a model where we load the firmware into a regular `KVVec`, and only copy it into a DMA object when we are about to load it. This removes 8 unsafe statements and 30 lines of code, and the copy is, as can be expected, absolutely unnoticeable at runtime. The rest of the patchset did not change much, apart from the simplifications in the PIO path that the first patch brings. This series is based on `drm-rust-next`. A tree with all the patches is available at [1]. [1] https://github.com/Gnurou/linux/tree/b4/turing Signed-off-by: Alexandre Courbot <[email protected]> Changes in v10: - Store the firmwares into a regular KVec and move them into a DMA object only when actually loading using DMA. - Use `try_update` when updating the `NV_PFALCON_FBIF_TRANSCFG` register array as its index is not build-time proven to be valid. - Fix alignment issue when processing imem section of the FWSEC bootloader (thanks Eliot!). - Link to v9: https://patch.msgid.link/[email protected] Changes in v9: - Add a few preparatory patches to simplify the actual feature patches. - Use a wrapping type for the bootloader. - Simplify the falcon loading code and move the complexity to the firmware types. - Add the generic bootloader files to `ModInfoBuilder`. - Link to v8: https://lore.kernel.org/all/[email protected]/ --- Alexandre Courbot (8): gpu: nova-core: create falcon firmware DMA objects lazily gpu: nova-core: falcon: add constant for memory block alignment gpu: nova-core: falcon: rename load parameters to reflect DMA dependency gpu: nova-core: falcon: remove FalconFirmware's dependency on FalconDmaLoadable gpu: nova-core: falcon: remove unwarranted safety check in dma_load gpu: nova-core: move brom_params and boot_addr to FalconFirmware gpu: nova-core: make Chipset::arch() const gpu: nova-core: add gen_bootloader firmware to ModInfoBuilder Timur Tabi (2): gpu: nova-core: add PIO support for loading firmware images gpu: nova-core: use the Generic Bootloader to boot FWSEC on Turing drivers/gpu/nova-core/falcon.rs | 315 ++++++++++++++++++--- drivers/gpu/nova-core/falcon/hal.rs | 6 +- drivers/gpu/nova-core/firmware.rs | 89 +++--- drivers/gpu/nova-core/firmware/booter.rs | 65 ++--- drivers/gpu/nova-core/firmware/fwsec.rs | 122 +++----- drivers/gpu/nova-core/firmware/fwsec/bootloader.rs | 289 +++++++++++++++++++ drivers/gpu/nova-core/gpu.rs | 9 +- drivers/gpu/nova-core/gsp/boot.rs | 17 +- drivers/gpu/nova-core/regs.rs | 30 ++ 9 files changed, 740 insertions(+), 202 deletions(-) --- base-commit: 6ca4bcc23ae86a1330e5347ae9eb6c5d0cb690ab change-id: 20260204-turing_prep-6f6f54fe1850 Best regards, -- Alexandre Courbot <[email protected]>
