> 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/man4/bcma.4.md).

# bcma.4

`bcma` — Broadcom AMBA 背板驱动

## 名称

`bcma`

## 概要

要将此驱动编译进内核，请在内核配置文件中加入以下行：

> device bhnd device bcma

要在引导时以模块形式加载该驱动，请在 loader.conf(5) 中加入以下行：

```sh
bcma_load="YES"
```

## 描述

`bcma` 驱动为基于 ARM AMBA 的背板架构设备提供 [bhnd(4)](/man/man4/bhnd.4.md) 支持，该架构见于后续的 Broadcom 家庭网络部门的网络芯片组和嵌入式系统中。

公共互连连接背板的所有功能块。这些功能块（称为核心）使用 ARM AMBA AXI 或 APB 接口与连接到互连的设备通信。

[siba(4)](/man/man4/siba.4.md) 设备中使用的 IP 核由 Broadcom 进行了适配，以与新的互连兼容。

## 参见

[bhnd(4)](/man/man4/bhnd.4.md), [intro(4)](/man/man4/intro.4.md), [siba(4)](/man/man4/siba.4.md)

## 历史

`bcma` 设备驱动首次出现于 FreeBSD 11.0。

## 作者

`bcma` 驱动由 Landon Fuller <landonf@FreeBSD.org> 编写。


---

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