Struct Command

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pub struct Command(/* private fields */);

Expand description

A PCI device’s Command register.

See https://wiki.osdev.org/Pci#Command_Register

Implementations§

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impl Command

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pub const IO_SPACE_ENABLED: Pack16<bool, Self>

I/O Space Enabled

If set to 1 the device can respond to I/O Space accesses; otherwise, the device’s response is disabled.

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pub const MEMORY_SPACE_ENABLED: Pack16<bool, Self>

Memory Space Enabled

If set to 1 the device can respond to Memory Space accesses; otherwise, the device’s response is disabled.

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pub const BUS_MASTER: Pack16<bool, Self>

Bus Master

If set to 1, the device can behave as a bus master; otherwise, the device can not generate PCI accesses.

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pub const SPECIAL_CYCLE_ENABLE: Pack16<bool, Self>

Special Cycle Enabled

If set to 1 the device can monitor Special Cycle operations; otherwise, the device will ignore them.

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pub const MEMORY_WRITE_AND_INVALIDATE_ENABLED: Pack16<bool, Self>

Memory Write and Invalidate Enabled

If set to 1 the device can generate the Memory Write and Invalidate command; otherwise, the Memory Write command must be used.

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pub const VGA_PALETTE_SNOOP: Pack16<bool, Self>

VGA Palette Snoop

If set to 1 the device does not respond to palette register writes and will snoop the data; otherwise, the device will treat palette write accesses like all other accesses.

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pub const PARITY_ERROR_RESPONSE_ENABLED: Pack16<bool, Self>

Parity Error Response enabled

If set to 1 the device will take its normal action when a parity error is detected; otherwise, when an error is detected, the device will set bit 15 of the Status register (DETECTED_PARITY_ERROR), but will not assert the PERR# (Parity Error) pin and will continue operation as normal.

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pub const SERR_ENABLED: Pack16<bool, Self>

SERR# Enabled

If set to 1 the SERR# driver is enabled; otherwise, the driver is disabled.

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pub const FAST_BACK_TO_BACK_ENABLED: Pack16<bool, Self>

Fast Back-To-Back Enabled

If set to 1, indicates a device is allowed to generate fast back-to-back transactions; otherwise, fast back-to-back transactions are only allowed to the same agent.

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pub const INTERRUPT_DISABLE: Pack16<bool, Self>

Interrupt Disable

If set to 1, the assertion of the devices INTx# signal is disabled; otherwise, assertion of the signal is enabled.

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pub const fn from_bits(bits: u16) -> Self

Constructs a new instance of Self from the provided raw bits.

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pub const fn new() -> Self

Constructs a new instance of Self with all bits set to 0.

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pub const fn bits(self) -> u16

Returns the raw bit representatiion of self as an integer.

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pub fn with<T>(self, field: Pack16<T, Self>, value: T) -> Self
where T: FromBits<u16>,

Packs the bit representation of value into self at the bit range designated by field, returning a new bitfield.

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pub fn set<T>(&mut self, field: Pack16<T, Self>, value: T) -> &mut Self
where T: FromBits<u16>,

Packs the bit representation of value into self at the range designated by field, mutating self in place.

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pub fn get<T>(self, field: Pack16<T, Self>) -> T
where T: FromBits<u16>,

Unpacks the bit range represented by field from self, and converts it into a T-typed value.

§Panics

This method panics if self does not contain a valid bit pattern for a T-typed value, as determined by T’s FromBits::try_from_bits implementation.

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pub fn try_get<T>(self, field: Pack16<T, Self>) -> Result<T, T::Error>
where T: FromBits<u16>,

Unpacks the bit range represented by field from self and attempts to convert it into a T-typed value.

§Returns

Ok(T) if a T-typed value could be constructed from the bits in src
Err(T::Error) if src does not contain a valid bit pattern for a T-typed value, as determined by T’s [FromBits::try_from_bits implementation.

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pub fn assert_valid()

Asserts that all the packing specs for this type are valid.

This is intended to be used in unit tests.

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pub fn display_ascii(&self) -> impl Display

Returns a value that formats this bitfield in a multi-line format, using only ASCII characters.

This is equivalent to formatting this bitfield using a {} display specifier, but will never use Unicode box-drawing characters, even when an upstream formatter uses the {:#} fmt::Display specifier. This is intended for use on platforms where Unicode box drawing characters are never available.

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pub fn display_unicode(&self) -> impl Display

Returns a value that formats this bitfield in a multi-line format, always using Unicode box-drawing characters.

This is equivalent to formatting this bitfield using a {:#} format specifier, but will always use Unicode box-drawing characters, even when an upstream formatter uses the {} fmt::Display specifier.