如何实现Linux下的U盘（USB Mass Storage）驱动 v0.6

Crifan Li

版本：v0.6

出版日期 2012-06-14

缩略词 ...................................................................................................................................... 1

正文之前 ................................................................................................................................... ii

1.3. USB相关的软件实现 ................................................................................................... 4

2. USB Mass Storage大容量存储的基本知识 ............................................................................. 5

2.1. USB Mass Storage相关的协议 ................................................................................... 9

2.1.1. USB Mass Storage相关协议简介 ................................................................... 10

2.1.1.1. USB MSC Control/Bulk/Interrupt (CBI) Transport .............................. 10

2.1.1.2. USB MSC Bulk-Only (BBB) Transport ................................................. 11

2.1.1.2.1. 为何USB MSC中Bulk-only Transport被叫做 BBB ....................... 11

2.1.1.2.2. 为何已经有了CBI，又再弄出个BBB ............................................ 11

2.1.1.3. USB MSC UFI Command Specification .............................................. 12

2.1.1.4. USB MSC Bootability Specification ................................................... 12

2.1.3.1. bInterfaceClass=0x08=Mass Storage ................................................ 15

2.1.3.2. bInterfaceSubClass=0x06=SCSI Transparent ..................................... 15

2.1.3.3. bInterfaceProtocol=0x50=Bulk Only Transport ................................. 16

2.2. USB Mass Storage相关的软件实现 ........................................................................... 16

3. 实现U盘驱动的整个流程是什么样的 ...................................................................................... 17

4. Linux系统下，USB驱动的框架已经做了哪些事情 ................................................................... 18

5. Linux下实现U盘驱动，自己需要做哪些事情以及如何做 .......................................................... 19

参考书目 ................................................................................................................................ 20

1. U盘 ...................................................................................................................................... ii

2.1. USB Mass Storage Framework ......................................................................................... 6

2.8. SubClass Codes Mapped to Command Block Specifications .......................................... 16

2.9. Mass Storage Transport Protocol ................................................................................... 16

3.1. USB数据流向图 ................................................................................................................ 17

1

MSC (MSC) Mass Storage Class

大容量存储类型

规范