文章目录

  • USB 1.0 2.0 3.0 的 枚举 总线过程
  • USB2.0 枚举
    • 枚举过程中的一次 control transfer : get device descriptor
    • 枚举过程中的一次 control transfer : set address
    • 一次 control transfer 中的 "USB标准设备请求"
  • USB 2.0 USB mouse 插入打印

USB 1.0 2.0 3.0 的 枚举 总线过程

  • usb 1.0 2.0
1.0 -> 2.0
更改了 reset 时间 : 从 10ms 到 不做要求
  • usb 2.0 3.0

2.0 -> 3.0
更改了 reset 的必要性 : 从必要到可选
更改了驱动能力 : 100 mA -> 150 mA
增加host 设置 isochronous delay , 并通知设备host 通知设备 system exit latency using the Set SEL request

USB2.0 枚举

枚举过程中的一次 control transfer : get device descriptor
枚举过程中包括很多个 control transfer (例如 get device 描述符 就是一个 control transfer)这个 control transfer 中 包括 三个阶段 // 以 get device 描述符 为例SETUP阶段一个 usb 控制 事务令牌包 + DATA0 数据包(XXX) + 握手包 // 数据中为8字节的USB标准设备请求DATA阶段 // N个 usb 控制 事务第一个 usb 控制 事务令牌包 + DATA1数据包 + 握手包第二个 usb 控制 事务令牌包 + DATA0数据包 + 握手包...STATUS阶段一个 usb 控制 事务令牌包 + DATA1数据包 + 握手包
枚举过程中的一次 control transfer : set address
枚举过程中包括很多个 control transfer (例如 set address 就是一个 control transfer)这个 control transfer 中 包括 两个阶段 // 以 set address 为例SETUP阶段一个 usb 控制 事务令牌包(主机发出) + DATA0 数据包(XXX)(主机发出) + 握手包(设备发出) // 数据中为8字节的USB标准设备请求STATUS阶段一个 usb 控制 事务令牌包(主机发出) + DATA1数据包(设备发出) + 握手包(主机发出)

下图 为 set address ,设置的地址值为 14 ,对应 该文中的 “3.3 如果第一阶段数据传输方向为主机到设备（数据长度为0）”

一次 control transfer 中的 “USB标准设备请求”
XXX 包是个数据包,除了PID域,有8个字节数据,是 一次控制传输的最重点数据
这8个字节 是 控制传输的SETUP过程(DATA0 数据包(XXX)) 通过 默认控制端点0发出的.
8个字节由5个字段构成（字段是标准请求命令的数据部分）
结构如下（括号中的数字表示字节数，首字母bm,b,w分别表示位图、字节，双字节）：
bmRequestType(1)+bRequest(1)+wvalue(2)+wIndex(2)+wLength(2)


USB 2.0 USB mouse 插入打印

  • ok6410
# usb 1-1: new full-speed USB device number 4 using s3c2410-ohci
input: GTech MI wireless mouse Mouse as /devices/platform/s3c2410-ohci/usb1/1-1/1-1:1.0/0003:2717:5001.0003/input/input10
input: GTech MI wireless mouse as /devices/platform/s3c2410-ohci/usb1/1-1/1-1:1.0/0003:2717:5001.0003/input/input11
input: GTech MI wireless mouse Consumer Control as /devices/platform/s3c2410-ohci/usb1/1-1/1-1:1.0/0003:2717:5001.0003/input/input12
input: GTech MI wireless mouse System Control as /devices/platform/s3c2410-ohci/usb1/1-1/1-1:1.0/0003:2717:5001.0003/input/input13
hid-generic 0003:2717:5001.0003: input: USB HID v1.10 Mouse [GTech MI wireless mouse] on usb-s3c24xx-1/input0#
# usb 1-1: USB disconnect, device number 4
动态打印支持的模块
usbhid
ohci_s3c2410
ohci_hcd
usbcore

# s3c2410-ohci s3c2410-ohci: rhsc
usb usb1: usb wakeup-resume
usb usb1: usb auto-resume
s3c2410-ohci s3c2410-ohci: wakeup root hub
hub 1-0:1.0: hub_resume
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,16b5695b,0004)
s3c2410-ohci s3c2410-ohci: GetStatus roothub.portstatus [0] = 0x00010101 CSC PPS CCS
usb usb1-port1: status 0101 change 0001
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0x2301,0x0010,0x0001,16b5695b,0000)
s3c2410-ohci s3c2410-ohci: rhsc
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0002,16b5695b,0004)
hub 1-0:1.0: state 7 ports 2 chg 0002 evt 0000
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,16b5695b,0004)
usb usb1-port1: status 0101, change 0000, 12 Mb/s
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0x2303,0x0004,0x0001,00f4222b,0000)
s3c2410-ohci s3c2410-ohci: rhsc
s3c2410-ohci s3c2410-ohci: rhsc
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,00f4222b,0004)
s3c2410-ohci s3c2410-ohci: GetStatus roothub.portstatus [0] = 0x00100103 PRSC PPS PES CCS
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0x2301,0x0014,0x0001,00f4222b,0000)
usb 1-1: new full-speed USB device number 4 using s3c2410-ohci
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0x2303,0x0004,0x0001,00f4222b,0000)
s3c2410-ohci s3c2410-ohci: rhsc
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,00f4222b,0004)
s3c2410-ohci s3c2410-ohci: GetStatus roothub.portstatus [0] = 0x00100103 PRSC PPS PES CCS
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0x2301,0x0014,0x0001,00f4222b,0000)
usb 1-1: skipped 1 descriptor after interface
usb 1-1: default language 0x0409
usb 1-1: udev 4, busnum 1, minor = 3
usb 1-1: usb_probe_device
usb 1-1: configuration #1 chosen from 1 choice
usb 1-1: adding 1-1:1.0 (config #1, interface 0)
usbhid 1-1:1.0: usb_probe_interface
usbhid 1-1:1.0: usb_probe_interface - got id
input: GTech MI wireless mouse Mouse as /devices/platform/s3c2410-ohci/usb1/1-1/1-1:1.0/0003:2717:5001.0003/input/input10
input: GTech MI wireless mouse as /devices/platform/s3c2410-ohci/usb1/1-1/1-1:1.0/0003:2717:5001.0003/input/input11
input: GTech MI wireless mouse Consumer Control as /devices/platform/s3c2410-ohci/usb1/1-1/1-1:1.0/0003:2717:5001.0003/input/input12
s3c2410-ohci s3c2410-ohci: link ed fd0534d8 branch 0 [16us.], interval 2
input: GTech MI wireless mouse System Control as /devices/platform/s3c2410-ohci/usb1/1-1/1-1:1.0/0003:2717:5001.0003/input/input13
hid-generic 0003:2717:5001.0003: input: USB HID v1.10 Mouse [GTech MI wireless mouse] on usb-s3c24xx-1/input0
hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0002
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,43ef6e6f,0004)拔出
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
#
#
# s3c2410-ohci s3c2410-ohci: rhsc
hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0002
s3c2410-ohci s3c2410-ohci: urb 18a25830 path 1 ep1in 5c160000 cc 5 --> status -62
s3c2410-ohci s3c2410-ohci: urb 18a25830 td e317df41 (1) cc 5, len=0/8
s3c2410-ohci s3c2410-ohci: unlink ed fd0534d8 branch 0 [16us.], interval 2
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,59b0b091,0004)
usbhid 1-1:1.0: retrying intr urb
s3c2410-ohci s3c2410-ohci: link ed fd0534d8 branch 0 [16us.], interval 2
s3c2410-ohci s3c2410-ohci: urb 18a25830 path 1 ep1in 5c160000 cc 5 --> status -62
s3c2410-ohci s3c2410-ohci: urb 18a25830 td 9170fc27 (1) cc 5, len=0/8
s3c2410-ohci s3c2410-ohci: unlink ed fd0534d8 branch 0 [16us.], interval 2
s3c2410-ohci s3c2410-ohci: GetStatus roothub.portstatus [0] = 0x00030100 PESC CSC PPS
usbhid 1-1:1.0: retrying intr urb
s3c2410-ohci s3c2410-ohci: link ed fd0534d8 branch 0 [16us.], interval 2
s3c2410-ohci s3c2410-ohci: urb 18a25830 path 1 ep1in 5c160000 cc 5 --> status -62
s3c2410-ohci s3c2410-ohci: urb 18a25830 td e317df41 (1) cc 5, len=0/8
s3c2410-ohci s3c2410-ohci: unlink ed fd0534d8 branch 0 [16us.], interval 2
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0x2301,0x0010,0x0001,59b0b091,0000)
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0x2301,0x0011,0x0001,59b0b091,0000)
usb usb1-port1: status 0100, change 0003, 12 Mb/s
usb 1-1: USB disconnect, device number 4
usb 1-1: unregistering device
usb 1-1: unregistering interface 1-1:1.0
usb 1-1: usb_disable_device nuking all URBs
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,7a4db320,0004)
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,7a4db320,0004)
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,7a4db320,0004)
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,7a4db320,0004)
s3c2410-ohci s3c2410-ohci: s3c2410_hub_control(3628197c,0xa300,0x0000,0x0001,7a4db320,0004)
usb usb1-port1: debounce total 100ms stable 100ms status 0x100
hub 1-0:1.0: hub_suspend
usb usb1: bus auto-suspend, wakeup 1
s3c2410-ohci s3c2410-ohci: suspend root hub
  • x86主机

[19204.025543] xhci_hcd 0000:00:14.0: Port change event, 3-8, id 8, portsc: 0x206e1
[19204.025563] xhci_hcd 0000:00:14.0: handle_port_status: starting usb3 port polling.
[19204.025852] hub 3-0:1.0: state 7 ports 10 chg 0000 evt 0100
[19204.025876] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x206e1, return 0x10101
[19204.026006] xhci_hcd 0000:00:14.0: clear port8 connect change, portsc: 0x6e1
[19204.026028] usb usb3-port8: status 0101, change 0001, 12 Mb/s
[19204.026040] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x6e1, return 0x101
[19204.060035] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x6e1, return 0x101
[19204.096065] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x6e1, return 0x101
[19204.104031] xhci_hcd 0000:00:14.0: xhci_hub_status_data: stopping usb3 port polling
[19204.132066] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x6e1, return 0x101
[19204.172082] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x6e1, return 0x101
[19204.172117] usb usb3-port8: debounce total 100ms stable 100ms status 0x101
[19204.172133] xhci_hcd 0000:00:14.0: // Ding dong!
[19204.172165] xhci_hcd 0000:00:14.0: Slot 8 output ctx = 0x1faa6000 (dma)
[19204.172174] xhci_hcd 0000:00:14.0: Slot 8 input ctx = 0x1f71a000 (dma)
[19204.172185] xhci_hcd 0000:00:14.0: Set slot id 8 dcbaa entry 00000000149c4714 to 0x1faa6000
[19204.172241] xhci_hcd 0000:00:14.0: set port reset, actual port 3-8 status  = 0x791
[19204.227281] xhci_hcd 0000:00:14.0: Port change event, 3-8, id 8, portsc: 0x200603
[19204.227303] xhci_hcd 0000:00:14.0: handle_port_status: starting usb3 port polling.
[19204.244115] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x200603, return 0x100103
[19204.244156] xhci_hcd 0000:00:14.0: clear port8 reset change, portsc: 0x603
[19204.304131] usb 3-8: new full-speed USB device number 9 using xhci_hcd
[19204.304150] xhci_hcd 0000:00:14.0: Set root hub portnum to 8
[19204.304157] xhci_hcd 0000:00:14.0: Set fake root hub portnum to 8
[19204.304163] xhci_hcd 0000:00:14.0: udev->tt = 000000004e0d80b6
[19204.304170] xhci_hcd 0000:00:14.0: udev->ttport = 0x8
[19204.304178] xhci_hcd 0000:00:14.0: // Ding dong!
[19204.304201] xhci_hcd 0000:00:14.0: Successful setup context command
[19204.304210] xhci_hcd 0000:00:14.0: Op regs DCBAA ptr = 0x0000010e4a8000
[19204.304217] xhci_hcd 0000:00:14.0: Slot ID 8 dcbaa entry @00000000149c4714 = 0x0000001faa6000
[19204.304225] xhci_hcd 0000:00:14.0: Output Context DMA address = 0x1faa6000
[19204.304231] xhci_hcd 0000:00:14.0: Internal device address = 0
[19204.304518] xhci_hcd 0000:00:14.0: Waiting for status stage event
[19204.304559] xhci_hcd 0000:00:14.0: set port reset, actual port 3-8 status  = 0x791
[19204.352131] xhci_hcd 0000:00:14.0: xhci_hub_status_data: stopping usb3 port polling
[19204.359592] xhci_hcd 0000:00:14.0: Port change event, 3-8, id 8, portsc: 0x200603
[19204.359610] xhci_hcd 0000:00:14.0: handle_port_status: starting usb3 port polling.
[19204.372170] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x200603, return 0x100103
[19204.372211] xhci_hcd 0000:00:14.0: clear port8 reset change, portsc: 0x603
[19204.432182] xhci_hcd 0000:00:14.0: Resetting device with slot ID 8
[19204.432200] xhci_hcd 0000:00:14.0: // Ding dong!
[19204.432213] xhci_hcd 0000:00:14.0: Completed reset device command.
[19204.432224] xhci_hcd 0000:00:14.0: Can't reset device (slot ID 8) in default state
[19204.432231] xhci_hcd 0000:00:14.0: Not freeing device rings.
[19204.432239] xhci_hcd 0000:00:14.0: // Ding dong!
[19204.432395] xhci_hcd 0000:00:14.0: Successful setup address command
[19204.432411] xhci_hcd 0000:00:14.0: Op regs DCBAA ptr = 0x0000010e4a8000
[19204.432419] xhci_hcd 0000:00:14.0: Slot ID 8 dcbaa entry @00000000149c4714 = 0x0000001faa6000
[19204.432429] xhci_hcd 0000:00:14.0: Output Context DMA address = 0x1faa6000
[19204.432435] xhci_hcd 0000:00:14.0: Internal device address = 8
[19204.453286] usb 3-8: skipped 1 descriptor after interface
[19204.453512] xhci_hcd 0000:00:14.0: Waiting for status stage event
[19204.453547] usb 3-8: default language 0x0409
[19204.454003] xhci_hcd 0000:00:14.0: Waiting for status stage event
[19204.454293] xhci_hcd 0000:00:14.0: Waiting for status stage event
[19204.454330] usb 3-8: udev 9, busnum 3, minor = 264
[19204.454340] usb 3-8: New USB device found, idVendor=2717, idProduct=5001, bcdDevice= 1.00
[19204.454348] usb 3-8: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[19204.454355] usb 3-8: Product: MI wireless mouse
[19204.454360] usb 3-8: Manufacturer: GTech
[19204.454654] usb 3-8: usb_probe_device
[19204.454667] usb 3-8: configuration #1 chosen from 1 choice
[19204.454685] xhci_hcd 0000:00:14.0: add ep 0x81, slot id 8, new drop flags = 0x0, new add flags = 0x8
[19204.454694] xhci_hcd 0000:00:14.0: xhci_check_bandwidth called for udev 000000003f484a32
[19204.454705] xhci_hcd 0000:00:14.0: // Ding dong!
[19204.454904] xhci_hcd 0000:00:14.0: Successful Endpoint Configure command
[19204.454943] xhci_hcd 0000:00:14.0: // Ding dong!
[19204.454957] xhci_hcd 0000:00:14.0: Stopped on No-op or Link TRB for slot 8 ep 2
[19204.454971] xhci_hcd 0000:00:14.0: // Ding dong!
[19204.455400] usb 3-8: adding 3-8:1.0 (config #1, interface 0)
[19204.455485] usbhid 3-8:1.0: usb_probe_interface
[19204.455492] usbhid 3-8:1.0: usb_probe_interface - got id
[19204.459790] input: GTech MI wireless mouse Mouse as /devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/0003:2717:5001.0007/input/input41
[19204.516381] input: GTech MI wireless mouse as /devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/0003:2717:5001.0007/input/input42
[19204.517098] input: GTech MI wireless mouse Consumer Control as /devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/0003:2717:5001.0007/input/input43
[19204.517845] input: GTech MI wireless mouse System Control as /devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/0003:2717:5001.0007/input/input44
[19204.518469] usbhid 3-8:1.0: looking for a minor, starting at 0
[19204.518783] hid-generic 0003:2717:5001.0007: starting pid init
[19204.518794] hid-generic 0003:2717:5001.0007: not a PID device, no output report
[19204.518834] hid-generic 0003:2717:5001.0007: input,hiddev0,hidraw0: USB HID v1.10 Mouse [GTech MI wireless mouse] on usb-0000:00:14.0-8/input0
[19204.596205] xhci_hcd 0000:00:14.0: xhci_hub_status_data: stopping usb3 port polling------------------------[19222.137815] xhci_hcd 0000:00:14.0: Port change event, 3-8, id 8, portsc: 0x202a0
[19222.137837] xhci_hcd 0000:00:14.0: handle_port_status: starting usb3 port polling.
[19222.138148] hub 3-0:1.0: state 7 ports 10 chg 0000 evt 0100
[19222.138172] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x202a0, return 0x10100
[19222.138306] xhci_hcd 0000:00:14.0: clear port8 connect change, portsc: 0x2a0
[19222.138328] usb usb3-port8: status 0100, change 0001, 12 Mb/s
[19222.138338] usb 3-8: USB disconnect, device number 9
[19222.138345] usb 3-8: unregistering device
[19222.138350] usb 3-8: unregistering interface 3-8:1.0
[19222.138530] xhci_hcd 0000:00:14.0: Cancel URB 000000006b4cfb67, dev 8, ep 0x81, starting at offset 0x4a2c000
[19222.138547] xhci_hcd 0000:00:14.0: // Ding dong!
[19222.138554] xhci_hcd 0000:00:14.0: shutdown urb ffff8a1d8eedd6c0 ep1in-intr
[19222.138569] xhci_hcd 0000:00:14.0: Stopped on Transfer TRB for slot 8 ep 2
[19222.138578] xhci_hcd 0000:00:14.0: Removing canceled TD starting at 0x4a2c000 (dma) in stream 0 URB 000000006b4cfb67
[19222.138589] xhci_hcd 0000:00:14.0: Set TR Deq ptr 0x4a2c010, cycle 1[19222.138596] xhci_hcd 0000:00:14.0: // Ding dong!
[19222.138602] xhci_hcd 0000:00:14.0: xhci_giveback_invalidated_tds: Keep cancelled URB 000000006b4cfb67 TD as cancel_status is 2
[19222.138612] xhci_hcd 0000:00:14.0: Successful Set TR Deq Ptr cmd, deq = @04a2c010
[19222.138619] xhci_hcd 0000:00:14.0: xhci_handle_cmd_set_deq: Giveback cancelled URB 000000006b4cfb67 TD
[19222.138626] xhci_hcd 0000:00:14.0: Giveback URB 000000006b4cfb67, len = 0, expected = 8, status = -115
[19222.211316] xhci_hcd 0000:00:14.0: xhci_hub_status_data: stopping usb3 port polling
[19222.231393] usbhid 3-8:1.0: removing 0 minor
[19222.233828] usb 3-8: usb_disable_device nuking all URBs
[19222.233834] xhci_hcd 0000:00:14.0: xhci_drop_endpoint called for udev 000000003f484a32
[19222.233844] xhci_hcd 0000:00:14.0: drop ep 0x81, slot id 8, new drop flags = 0x8, new add flags = 0x0
[19222.233847] xhci_hcd 0000:00:14.0: xhci_check_bandwidth called for udev 000000003f484a32
[19222.233850] xhci_hcd 0000:00:14.0: // Ding dong!
[19222.234540] xhci_hcd 0000:00:14.0: Successful Endpoint Configure command
[19222.234649] xhci_hcd 0000:00:14.0: // Ding dong!
[19222.234673] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x2a0, return 0x100
[19222.267359] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x2a0, return 0x100
[19222.303371] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x2a0, return 0x100
[19222.339403] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x2a0, return 0x100
[19222.375416] xhci_hcd 0000:00:14.0: Get port status 3-8 read: 0x2a0, return 0x100
[19222.375429] usb usb3-port8: debounce total 100ms stable 100ms status 0x100

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