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// Copyright 2022 the authors.
// This project is dual-licensed under Apache 2.0 and MIT terms.
// See LICENSE-APACHE and LICENSE-MIT for details.
//! PSCI error codes.
pub const SUCCESS: i32 = 0;
pub const NOT_SUPPORTED: i32 = -1;
pub const INVALID_PARAMETERS: i32 = -2;
pub const DENIED: i32 = -3;
pub const ALREADY_ON: i32 = -4;
pub const ON_PENDING: i32 = -5;
pub const INTERNAL_FAILURE: i32 = -6;
pub const NOT_PRESENT: i32 = -7;
pub const DISABLED: i32 = -8;
pub const INVALID_ADDRESS: i32 = -9;
/// Standard PSCI errors.
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
pub enum Error {
NotSupported,
InvalidParameters,
Denied,
AlreadyOn,
OnPending,
InternalFailure,
NotPresent,
Disabled,
InvalidAddress,
/// An unexpected return value from a PSCI function.
Unknown(i32),
}
pub(crate) fn success_or_error_32(value: u32) -> Result<(), Error> {
success_or_error(value as i32)
}
pub(crate) fn success_or_error_64(value: u64) -> Result<(), Error> {
success_or_error(value as i32)
}
fn success_or_error(value: i32) -> Result<(), Error> {
if value == SUCCESS {
Ok(())
} else {
Err(value.into())
}
}
impl From<Error> for i32 {
fn from(error: Error) -> i32 {
match error {
Error::NotSupported => NOT_SUPPORTED,
Error::InvalidParameters => INVALID_PARAMETERS,
Error::Denied => DENIED,
Error::AlreadyOn => ALREADY_ON,
Error::OnPending => ON_PENDING,
Error::InternalFailure => INTERNAL_FAILURE,
Error::NotPresent => NOT_PRESENT,
Error::Disabled => DISABLED,
Error::InvalidAddress => INVALID_ADDRESS,
Error::Unknown(value) => value,
}
}
}
impl From<i32> for Error {
fn from(value: i32) -> Self {
match value {
NOT_SUPPORTED => Error::NotSupported,
INVALID_PARAMETERS => Error::InvalidParameters,
DENIED => Error::Denied,
ALREADY_ON => Error::AlreadyOn,
ON_PENDING => Error::OnPending,
INTERNAL_FAILURE => Error::InternalFailure,
NOT_PRESENT => Error::NotPresent,
DISABLED => Error::Disabled,
INVALID_ADDRESS => Error::InvalidAddress,
_ => Error::Unknown(value),
}
}
}
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