Struct capsules_extra::dac::Dac

pub struct Dac<'a> { /* private fields */ }

Implementations

impl<'a> Dac<'a>

pub fn new(dac: &'a dyn DacChannel) -> Dac<'a>

Trait Implementations

impl SyscallDriver for Dac<'_>

fn command( &self, command_num: usize, data: usize, _: usize, _: ProcessId, ) -> CommandReturn

Control the DAC.

command_num

• 0: Driver existence check.
• 1: Initialize and enable the DAC.
• 2: Set the output to data1, a scaled output value.

fn allocate_grant(&self, _processid: ProcessId) -> Result<(), Error>

Request to allocate a capsule’s grant for a specific process.

fn allow_userspace_readable( &self, app: ProcessId, which: usize, slice: ReadWriteProcessBuffer, ) -> Result<ReadWriteProcessBuffer, (ReadWriteProcessBuffer, ErrorCode)>

System call for a process to pass a buffer (a UserspaceReadableProcessBuffer) to the kernel that the kernel can either read or write. The kernel calls this method only after it checks that the entire buffer is within memory the process can both read and write.