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3a0395453b0ed9fb5b9c9ca0e05964766880338f
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6 Commits

Author SHA1 Message Date
Gabriel Kaszewski
3a0395453b refactor: extract shared hw-virtio crate, eliminate VirtIO protocol duplication 
Two VirtIO block and two VirtIO GPU implementations (adapter + driver)
shared 90% of their protocol logic. Extracted the common code into
hw-virtio, parameterized by MmioAccess trait.

New crate: hw-virtio (no_std, zero deps)
  - mmio.rs: MmioAccess trait, DirectMmio, init_legacy_device(), scan
  - queue.rs: VirtioQueue with descriptor chain submit + poll
  - block.rs: block read protocol (3-descriptor chain)
  - gpu.rs: GPU commands (create_2d, attach_backing, set_scanout,
            transfer_to_host, resource_flush)

Adapter thin wrappers (identity-mapped, statics for DMA):
  - virtio_blk.rs: 220 → 53 lines
  - virtio_gpu.rs: 165 → 37 lines

Driver thin wrappers (mapped VAs, phys-info for DMA):
  - drivers/block/virtio: 139 → 70 lines
  - drivers/framebuffer/virtio: 146 → 95 lines

Also deleted input-server/input_device.rs (1-line re-export,
superseded by port-input-device).
 2026-10-18 13:29:28 +02:00
Gabriel Kaszewski
5766c6f7f7 refactor: extract ports/drivers/bins layers — clean dependency inversion 
Separate abstractions from implementations following DIP:

  servers/              drivers/
      │                     │
      ▼                     ▼
    ports/  (trait-only crates, zero deps)

New crates:

ports/ (abstractions):
  - port-framebuffer: Framebuffer trait
  - port-block-device: BlockDevice trait + SectorId
  - port-input-device: InputDevice trait + InputEvent types

drivers/ (implementations depend on ports/):
  - driver-framebuffer-virtio: VirtIO GPU framebuffer
  - driver-framebuffer-mock: test double
  - driver-block-virtio: VirtIO block device

bins/ (composition roots wire server + driver):
  - display-qemu: DisplayServer<VirtioFramebuffer>
  - storage-qemu: storage server with VirtIO block

Servers no longer own their hardware traits or driver code.
Neither server nor driver depends on the other — both point
inward to the port abstraction.
 2026-10-18 13:13:53 +02:00
Gabriel Kaszewski
7649cb0b18 feat: add run() and binary entry points for all servers and init 
Every server now has lib.rs (testable) + main.rs (deployable binary).
Binary is 3 lines: extern crate userspace_rt + call run().
Hardware servers use feature flags for adapter selection.
9 RISC-V binaries ready for the disk image.
 2026-10-18 04:26:42 +02:00
Gabriel Kaszewski
919e918c0a feat(input-server): expand protocol with pointer, scroll, and gamepad events 2026-10-18 03:11:15 +02:00
Gabriel Kaszewski
c9bd1d2c35 feat(input-server): add InputServer<D: InputDevice> with protocol, mock + UART adapters, and tests 2026-10-18 03:08:36 +02:00
Gabriel Kaszewski
bb99c3001d init 2026-10-16 02:32:24 +02:00