Ringbuffer Channels - patjak/facetimehd GitHub Wiki

• Terminal
  • Used for ASCII debugging output from Firmware
• IO
  • Used to transmit commands from Host to Target(Firmware)
• DEBUG
• BUF_H2T
• BUF_T2H
• SHAREDMALLOC
  • Firmware requests memory allocation that can be shared with the Hosts via this channel
• IO_T2H

Data structures

struct bcwc_ringbuf_entry {
    u32 address_flags;
    u32 request_size;
    u32 response_size;
    u32 __unused[13];
} __attribute__((packed));