interface Yellowstone {
  method RegisterEndpoint(RegisterEndpointRequest) -> (Empty);
  method GetAhciInfo(Empty) -> (AhciInfo);
  method GetFramebufferInfo(Empty) -> (FramebufferInfo);
  method GetDenali(Empty) -> (DenaliInfo);
}

message RegisterEndpointRequest {
  string endpoint_name;
  capability endpoint_capability;
  }

message Empty {

}

message AhciInfo {
  capability ahci_region;
  u64 region_length;
}

message FramebufferInfo {
  u64 address_phys;
  u64 width;
  u64 height;
  u64 pitch;
  // TODO: Add u16 & u8 to the yunq language so
  // the following can be appropriate widths.
  u64 bpp;
  u64 memory_model;
  u64 red_mask_size;
  u64 red_mask_shift;
  u64 green_mask_size;
  u64 green_mask_shift;
  u64 blue_mask_size;
  u64 blue_mask_shift;
}

message DenaliInfo {
  capability denali_endpoint;
  u64 device_id;
  u64 lba_offset;
}