arch::s390x::io::pmcw Struct Reference

Path Management Control Word — subchannel configuration. More...

Public Member Functions
constexpr auto	is_enabled () const noexcept -> bool
	True if subchannel is enabled (E bit — bit 7 of flags).
constexpr auto	is_multipath () const noexcept -> bool
	True if multipath mode is active (M bit — bit 5 of flags).
constexpr auto	isc () const noexcept -> u8
	Extract ISC (I/O interruption subclass code, bits 2-4 of word 1). In the u16 flags field on big-endian: positions 13-11.

Data Fields
u32	_reserved {0}
	Reserved.
u8	chpid [8] {}
	Channel path identifiers (one per path).
u16	devno {0}
	Device number.
u16	flags {0}
	Control flags (E, LM, MM, D, T, V, ISC, etc.).
u32	intparm {0}
	Interruption parameter.
u8	lpm {0}
	Logical path mask.
u8	lpum {0}
	Last path used mask.
u16	mbi {0}
	Measurement block index.
u8	pam {0}
	Path available mask.
u8	pim {0}
	Path installed mask.
u8	pnom {0}
	Path not operational mask.
u8	pom {0}
	Path operational mask.

Detailed Description

Path Management Control Word — subchannel configuration.

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The documentation for this struct was generated from the following file:

• arch/s390x/io/types.cxxm