> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/man9/superio.9.md).

# superio.9

`superio` — Super I/O 总线接口

## 名称

`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`

## 概要

```c
#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)
```

## 描述

`superio_write` 系列函数用于管理 Super I/O 设备。这些函数支持原始配置访问、定位设备、设备信息和设备配置。

### 控制器接口

`superio_vendor` 函数用于获取 Super I/O 控制器 `dev` 的供应商。可能的返回值是 `SUPERIO_VENDOR_ITE` 和 `SUPERIO_VENDOR_NUVOTON`。

`superio_devid` 函数用于获取 Super I/O 控制器 `dev` 的设备 ID。

`superio_revid` 函数用于获取 Super I/O 控制器 `dev` 的修订 ID。

`superio_find_dev` 函数用于在 [superio(4)](/man/man4/superio.4.md) 总线上查找由 `dev` 指定的、具有请求类型和逻辑设备号的设备。这两者中任一（但不是两者）可以是通配符。支持的类型有 `SUPERIO_DEV_GPIO`、`SUPERIO_DEV_HWM` 和 `SUPERIO_DEV_WDT`。`type` 的通配符值是 `SUPERIO_DEV_NONE`。`ldn` 的通配符值是 -1。

### 设备接口

`superio_read` 函数用于从设备 `dev` 的 Super I/O 配置寄存器读取数据。

`superio_write` 函数用于向设备 `dev` 的 Super I/O 配置寄存器写入数据。

`superio_dev_enable`、`superio_dev_disable` 和 `superio_dev_enabled` 函数用于启用、禁用或检查设备 `dev` 的状态。`mask` 参数选择支持子功能的设备的子功能。对于没有子功能的设备，`mask` 应设置为 1。

### 访问器接口

`superio_get_dma` 用于获取为设备 `dev` 配置的 DMA 通道号。

`superio_get_iobase` 用于获取为设备 `dev` 配置的基 I/O 端口。设备可能通过 I/O 端口公开额外或替代的配置访问。

`superio_get_irq` 用于获取为设备 `dev` 配置的中断号。

`superio_get_ldn` 用于获取设备 `dev` 的逻辑设备号。

`superio_get_type` 用于获取设备 `dev` 的类型。

## 参见

[superio(4)](/man/man4/superio.4.md), [device(9)](/man/man9/device.9.md), [driver(9)](/man/man9/driver.9.md)

## 作者

本手册页由 Andriy Gapon <avg@FreeBSD.org> 编写。


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://book.bsdcn.org/man/man9/superio.9.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.