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SUPERIO(9) FreeBSD Kernel Developer's Manual SUPERIO(9)
NAME
superio, superio_devid, superio_dev_disable, superio_dev_enable,
superio_dev_enabled, superio_find_dev, superio_get_dma,
superio_get_iobase, superio_get_irq, superio_get_ldn, superio_get_type,
superio_read, superio_revid, superio_vendor, superio_write - Super I/O
bus interface
SYNOPSIS
#include <sys/bus.h>
#include <dev/superio/superio.h>
uint16_t
superio_devid(device_t dev);
void
superio_dev_disable(device_t dev, uint8_t mask);
void
superio_dev_enable(device_t dev, uint8_t mask);
bool
superio_dev_enabled(device_t dev, uint8_t mask);
device_t
superio_find_dev(device_t dev, superio_dev_type_t type, int ldn);
uint8_t
superio_get_dma(device_t dev);
uint16_t
superio_get_iobase(device_t dev);
uint8_t
superio_get_irq(device_t dev);
uint8_t
superio_get_ldn(device_t dev);
superio_dev_type_t
superio_get_type(device_t dev);
uint8_t
superio_read(device_t dev, uint8_t reg);
uint8_t
superio_revid(device_t dev);
superio_vendor_t
superio_vendor(device_t dev);
void
superio_write(device_t dev, uint8_t reg, uint8_t val);
DESCRIPTION
The superio set of functions are used for managing Super I/O devices.
The functions provide support for raw configuration access, locating
devices, device information, and device configuration.
controller dev.
The superio_revid() function is used to get a revision ID of the Super
I/O controller dev.
The superio_find_dev() function is used to find a device on the
superio(4) bus, specified by dev, that has the requested type and logical
device number. Either of those, but not both, can be a wildcard.
Supported types are SUPERIO_DEV_GPIO, SUPERIO_DEV_HWM, and
SUPERIO_DEV_WDT. The wildcard value for type is SUPERIO_DEV_NONE. The
wildcard value for ldn is -1.
The device interface
The superio_read() function is used to read data from the Super I/O
configuration register of the device dev.
The superio_write() function is used to write data to the Super I/O
configuration register of the device dev.
The superio_dev_enable(), superio_dev_disable(), and
superio_dev_enabled() functions are used to enable, disable, or check
status of the device dev. The mask parameter selects sub-functions of a
device that supports them. For devices that do not have sub-functions,
mask should be set to 1.
The accessor interface
The superio_get_dma() is used to get a DMA channel number configured for
the device dev.
The superio_get_iobase() is used to get a base I/O port configured for
the device dev. The device may expose additional or alternative
configuration access via the I/O ports.
The superio_get_irq() is used to get an interrupt number configured for
the device dev.
The superio_get_ldn() is used to get a Logical Device Number of the
device dev.
The superio_get_type() is used to get a type of the device dev.
SEE ALSO
superio(4), device(9), driver(9)
AUTHORS
This manual page was written by Andriy Gapon avg@FreeBSD.org
FreeBSD 14.0-RELEASE-p6 October 11, 2019 FreeBSD 14.0-RELEASE-p6