标签归档：devices

linux kernel定制（五）

2013 年 6 月 7 日 admin 发表回复

5 获得驱动模块的脚本
转载请注明出处[By SELinux+]

#!/bin/sh
#auth qfong.com
#site: www.selinuxplus.com www.qfong.com

export black='\033[0m'
export boldblack='\033[1;0m'
export red='\033[31m'
export boldred='\033[1;31m'
export green='\033[32m'
export boldgreen='\033[1;32m'
export yellow='\033[33m'
export boldyellow='\033[1;33m'
export blue='\033[34m'
export boldblue='\033[1;34m'
export magenta='\033[35m'
export boldmagenta='\033[1;35m'
export cyan='\033[36m'
export boldcyan='\033[1;36m'
export white='\033[37m'
export boldwhite='\033[1;37m'


cecho ()


{
local default_msg="No message passed."

message=${1:-$default_msg}	# Defaults to default message.


color=${2:-black}		# Defaults to black, if not specified.

case $color in
	black)
		 printf "$black" ;;
	boldblack)
		 printf "$boldblack" ;;
	red)
		 printf "$red" ;;
	boldred)
		 printf "$boldred" ;;
	yellow)
		 printf "$yellow" ;;
	boldyellow)
		 printf "$boldyellow" ;;
	blue)
		 printf "$blue" ;;
	boldblue)
		 printf "$boldblue" ;;
	magenta)
		 printf "$magenta" ;;
	boldmagenta)
		 printf "$boldmagenta" ;;
	cyan)
		 printf "$cyan" ;;
	boldcyan)
		 printf "$boldcyan" ;;
	white)
		 printf "$white" ;;
	boldwhite)
		 printf "$boldwhite" ;;
esac
  printf "%s"  "$message"
  tput sgr0			# Reset to normal.
  printf "$black"

return
}
cechon ()


{
local default_msg="No message passed."

message=${1:-$default_msg}	# Defaults to default message.


color=${2:-black}		# Defaults to black, if not specified.

case $color in
	black)
		 printf "$black" ;;
	boldblack)
		 printf "$boldblack" ;;
	red)
		 printf "$red" ;;
	boldred)
		 printf "$boldred" ;;
	yellow)
		 printf "$yellow" ;;
	boldyellow)
		 printf "$boldyellow" ;;
	blue)
		 printf "$blue" ;;
	boldblue)
		 printf "$boldblue" ;;
	magenta)
		 printf "$magenta" ;;
	boldmagenta)
		 printf "$boldmagenta" ;;
	cyan)
		 printf "$cyan" ;;
	boldcyan)
		 printf "$boldcyan" ;;
	white)
		 printf "$white" ;;
	boldwhite)
		 printf "$boldwhite" ;;
esac
  printf "%s\n"  "$message"
  tput sgr0			# Reset to normal.
  printf "$black"

return
}


driver()
{
if [ $# != "2" ]; then
        echo 
        cechon "Script to display the drivers and modules for a specified sysfs class device" "boldblue"
        cechon "Usage: $0 <CLASS_NAME>" "boldred"
        echo "example usage:"
        cecho  "     $0 d " "blue"
	cechon "sha" "boldmagenta"
        echo "Will show all drivers and modules for the sda block device."
        cechon "==============================================================" "white"
        exit 1
fi 


##
## for " find /sys/class -name sda "
##
DEV=$2
if test -e "$2";then
	DEVPATH=$2
else
	#find sysfs device directory for device
	DEVPATH=$(find /sys/class -name "$2" |head -1 )
	test -z "$DEVPATH" && DEVPATH=$(find /sys/block -name "$2" |head -1 )
	test -z "$DEVPATH" && DEVPATH=$(find /sys/bus -name "$2" |head -1 )
	if ! test -e "$DEVPATH";then
		cechon "No Device Found !!!" "red"
		exit 1
	fi
fi
cechon "==============================================================" "white"
        cechon "	Get Driver Tools ... " "boldred"
cechon "==============================================================" "white"
printf "Looking at sysfs devices:"
cechon "$DEVPATH" "boldmagenta"
if test -L "$DEVPATH" ;then
	# resolve class device link to device directory
	EDVPATH=$(readlink -f $DEVPATH)
	printf "Resolve link to:"
	cechon "$DEVPATH" "boldmagenta"
fi

if test -d "$DEVPATH";then
	#resolve old-style "device" loink to the parent device
	PARENT=$DEVPATH
	while test "$PARENT" != "/";do
		if test -L "$PARENT/device"; then
			DEVPATH=$(readlink -f $PARENT/device)
			printf "follow 'device' link to parent ::"
			cechon "$DEVPATH" "boldmagenta"	
			break	
		fi
		PARENT=$(dirname $PARENT)
	done
fi
	cechon "##############################################################" "white"
while test "$DEVPATH" != "/" ;do
	DRIVERPATH=
	DRIVER=
	MOUDLEPATH=
	MODULE=
	if test -e $DEVPATH/driver ;then

		DRIVERPATH=$(readlink -f $DEVPATH/driver)
		DRIVER=$(basename $DRIVERPATH)	
		printf "Found driver:"
		cechon "$DRIVER" "boldmagenta"	
		if test -e $DRIVERPATH/module; then
			MODULEPATH=$(readlink -f $DRIVERPATH/module)
			MODULE=$(basename $MODULEPATH)
			printf "Found module:"
			cechon "$MODULE" "boldmagenta"	
		fi
		cechon "--------------------------------------------------------------" "white"
		
	fi
	DEVPATH=$(dirname $DEVPATH)
done
}
modules(){
for i in `find /sys/ -name modalias -exec cat {} \;`;
do
 /sbin/modprobe --config /dev/null --show-depends $i ;
done | rev |cut -f 1 -d '/' |rev |sort -u   >/tmp/list_modules  


clear 
clear 
clear
cechon "==============================================================" "white"
        cechon "	Get Modules Tools ... " "boldred"
cechon "==============================================================" "white"
cat /tmp/list_modules
rm /tmp/list_modules
}
usages(){
        cechon "Usage: $0 <FILES> " "boldred"
        echo "example usage:"
        cecho  "     $0 " "blue"
	cechon "d|m" "boldmagenta"
        cechon "==============================================================" "white"
}

INP=$1
INF=${1:-usage}
if [[ $1 == "d" ]];then

driver $@
elif [[ $1 == "m" ]];then
modules
elif [[ $1 == "usages" ]];then
usages
else
usages
fi

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#!/bin/sh

#auth qfong.com

#site: www.selinuxplus.com www.qfong.com

export black='\033[0m'

export boldblack='\033[1;0m'

export red='\033[31m'

export boldred='\033[1;31m'

export green='\033[32m'

export boldgreen='\033[1;32m'

export yellow='\033[33m'

export boldyellow='\033[1;33m'

export blue='\033[34m'

export boldblue='\033[1;34m'

export magenta='\033[35m'

export boldmagenta='\033[1;35m'

export cyan='\033[36m'

export boldcyan='\033[1;36m'

export white='\033[37m'

export boldwhite='\033[1;37m'

cecho ()

{

local default_msg="No message passed."

message=${1:-$default_msg} # Defaults to default message.

color=${2:-black} # Defaults to black, if not specified.

case $color in

black)

printf "$black" ;;

boldblack)

printf "$boldblack" ;;

red)

printf "$red" ;;

boldred)

printf "$boldred" ;;

yellow)

printf "$yellow" ;;

boldyellow)

printf "$boldyellow" ;;

blue)

printf "$blue" ;;

boldblue)

printf "$boldblue" ;;

magenta)

printf "$magenta" ;;

boldmagenta)

printf "$boldmagenta" ;;

cyan)

printf "$cyan" ;;

boldcyan)

printf "$boldcyan" ;;

white)

printf "$white" ;;

boldwhite)

printf "$boldwhite" ;;

esac

printf "%s" "$message"

tput sgr0 # Reset to normal.

printf "$black"

return

}

cechon ()

{

local default_msg="No message passed."

message=${1:-$default_msg} # Defaults to default message.

color=${2:-black} # Defaults to black, if not specified.

case $color in

black)

printf "$black" ;;

boldblack)

printf "$boldblack" ;;

red)

printf "$red" ;;

boldred)

printf "$boldred" ;;

yellow)

printf "$yellow" ;;

boldyellow)

printf "$boldyellow" ;;

blue)

printf "$blue" ;;

boldblue)

printf "$boldblue" ;;

magenta)

printf "$magenta" ;;

boldmagenta)

printf "$boldmagenta" ;;

cyan)

printf "$cyan" ;;

boldcyan)

printf "$boldcyan" ;;

white)

printf "$white" ;;

boldwhite)

printf "$boldwhite" ;;

esac

printf "%s\n" "$message"

tput sgr0 # Reset to normal.

printf "$black"

return

}

driver()

{

if [ $# != "2" ]; then

echo

cechon "Script to display the drivers and modules for a specified sysfs class device" "boldblue"

cechon "Usage: $0 <CLASS_NAME>" "boldred"

echo "example usage:"

cecho " $0 d " "blue"

cechon "sha" "boldmagenta"

echo "Will show all drivers and modules for the sda block device."

cechon "==============================================================" "white"

exit 1

## for " find /sys/class -name sda "

DEV=$2

if test -e "$2";then

DEVPATH=$2

else

#find sysfs device directory for device

DEVPATH=$(find /sys/class -name "$2" |head -1 )

test -z "$DEVPATH" && DEVPATH=$(find /sys/block -name "$2" |head -1 )

test -z "$DEVPATH" && DEVPATH=$(find /sys/bus -name "$2" |head -1 )

if ! test -e "$DEVPATH";then

cechon "No Device Found !!!" "red"

exit 1

cechon "==============================================================" "white"

cechon " Get Driver Tools ... " "boldred"

cechon "==============================================================" "white"

printf "Looking at sysfs devices:"

cechon "$DEVPATH" "boldmagenta"

if test -L "$DEVPATH" ;then

# resolve class device link to device directory

EDVPATH=$(readlink -f $DEVPATH)

printf "Resolve link to:"

cechon "$DEVPATH" "boldmagenta"

if test -d "$DEVPATH";then

#resolve old-style "device" loink to the parent device

PARENT=$DEVPATH

while test "$PARENT" != "/";do

if test -L "$PARENT/device"; then

DEVPATH=$(readlink -f $PARENT/device)

printf "follow 'device' link to parent ::"

cechon "$DEVPATH" "boldmagenta"

break

PARENT=$(dirname $PARENT)

done

cechon "##############################################################" "white"

while test "$DEVPATH" != "/" ;do

DRIVERPATH=

DRIVER=

MOUDLEPATH=

MODULE=

if test -e $DEVPATH/driver ;then

DRIVERPATH=$(readlink -f $DEVPATH/driver)

DRIVER=$(basename $DRIVERPATH)

printf "Found driver:"

cechon "$DRIVER" "boldmagenta"

if test -e $DRIVERPATH/module; then

MODULEPATH=$(readlink -f $DRIVERPATH/module)

MODULE=$(basename $MODULEPATH)

printf "Found module:"

cechon "$MODULE" "boldmagenta"

cechon "--------------------------------------------------------------" "white"

DEVPATH=$(dirname $DEVPATH)

done

}

modules(){

for i in `find /sys/ -name modalias -exec cat {} \;`;

/sbin/modprobe --config /dev/null --show-depends $i ;

done | rev |cut -f 1 -d '/' |rev |sort -u >/tmp/list_modules

clear

cechon "==============================================================" "white"

cechon " Get Modules Tools ... " "boldred"

cechon "==============================================================" "white"

cat /tmp/list_modules

rm /tmp/list_modules

}

usages(){

cechon "Usage: $0 <FILES> " "boldred"

echo "example usage:"

cecho " $0 " "blue"

cechon "d|m" "boldmagenta"

cechon "==============================================================" "white"

}

INP=$1

INF=${1:-usage}

if [[ $1 == "d" ]];then

driver $@

elif [[ $1 == "m" ]];then

modules

elif [[ $1 == "usages" ]];then

usages

else

usages

Kernel、系统管理

linux kernel定制（四）

2013 年 6 月 7 日 admin 发表回复

4 内核选项
内核选项这里我们主要说明驱动的选择：

Device Drivers  --->
Generic Driver Options  --->
(/sbin/hotplug) path to uevent helper
[*] Prevent firmware from being built
-*- Userspace firmware loading support
[*]   Include in-kernel firmware blobs in kernel binary
()    External firmware blobs to build into the kernel binary
[ ] Driver Core verbose debug messages
[ ] Managed device resources verbose debug messages <=== 管理设备资源的冗长调试信息，我不需要
<*> Connector - unified userspace <-> kernelspace linker  --->// 内核空间与用户空间的信道
[*]   Report process events to userspace // 报告处理时间给用户空间
< > Memory Technology Device (MTD) support  --->
< > Parallel port support  --->
-*- Plug and Play support  --->
[ ]   PNP debugging messages <=== 调试信息，
[ ] Block devices  ---> <===比如ramdisk, 磁盘阵列，CD/DVD刻录等，详见内部选项
[ ] Misc devices  ---> <=== 没有需要支持的杂项设备
< > ATA/ATAPI/MFM/RLL support  --->
SCSI device support  --->
< > RAID Transport Class
-*- SCSI device support
[] legacy /proc/scsi/ support <=== SCSI设备
*** SCSI support type (disk, tape, CD-ROM) ***
<*> SCSI disk support // 就算你用SATA，此选项也必选
< > SCSI tape support
< > SCSI OnStream SC-x0 tape support
<> SCSI CDROM support <=== SCSI设备
<> SCSI generic support <=== SCSI设备
< > SCSI media changer support
[ ] Probe all LUNs on each SCSI device
[] Verbose SCSI error reporting (kernel size +=12K) <=== SCSI设备
[ ] SCSI logging facility
[ ] Asynchronous SCSI scanning
SCSI Transports  --->
<> Parallel SCSI (SPI) Transport Attributes <=== SCSI设备
< > FiberChannel Transport Attributes
< > iSCSI Transport Attributes
< > SAS Domain Transport Attributes
< > SRP Transport Attributes
[ ] SCSI low-level drivers  --->
< > SCSI Device Handlers  --->
< > OSD-Initiator library
Serial ATA (prod) and Parallel ATA (experimental) drivers  --->
        [*]  Verbose ATA error reporting
[*]   ATA ACPI Support
[ ]   SATA Port Multiplier support <=== 我SATA设备，没有使用 多路SATA/SATA Hub 的需求。Port Multiplier是南桥芯片提供的一种支持多块SATA设备，并共享总带宽的技术。
<*>   AHCI SATA support
< >      Platform AHCI SATA support
< >      Inito 162x SATA support
< >   Silicon Image 3124/3132 SATA support
[*]   ATA SFF support // 选择自己硬件对应的驱动即可
< >     ServerWorks Frodo / Apple K2 SATA support
<*>     Intel ESB, ICH, PIIX3, PIIX4 PATA/SATA support // Intel ICH，G系列chipset driver
< >     Marvell SATA support 
< >     NVIDIA SATA support  
< >     Pacific Digital ADMA support                  
< >     Pacific Digital SATA QStor support            
< >     Promise SATA TX2/TX4 support                  
< >     Silicon Image SATA support                    
< >     SiS 964/965/966/180 SATA support              
< >     ULi Electronics SATA support                  
< >     VIA SATA support     
< >     VITESSE VSC-7174 / INTEL 31244 SATA support   
< >     Initio 162x SATA support                      
< >     ACPI firmware driver for PATA                 
< >     ALi PATA support     
< >     AMD/NVidia PATA support <=== PATA支持
< >     ARTOP 6210/6260 PATA support                  
< >     ATI PATA support     
< >     CMD64x PATA support  
< >     CS5510/5520 PATA support                      
< >     CS5530 PATA support
< >     CS5536 PATA support                            
< >     EFAR SLC90E66 support                         
< >     Generic ATA support                           
< >     HPT 366/368 PATA support                      
< >     HPT 343/363 PATA support                      
< >     IT8211/2 PATA support                         
< >     JMicron PATA support                          
< >     Compaq Triflex PATA support                   
< >     Marvell PATA support via legacy mode          
<>     Intel PATA MPIIX support <=== PATA支持
< >     Intel PATA old PIIX support <=== PATA支持
< >     NETCELL Revolution RAID support               
< >     Nat Semi NS87410 PATA support                 
< >     Nat Semi NS87415 PATA support                 
< >     Older Promise PATA controller support         
< >     PC Tech RZ1000 PATA support                   
< >     SC1200 PATA support                           
< >     SERVERWORKS OSB4/CSB5/CSB6/HT1000 PATA support
< >     Promise PATA 2027x support                     
< >     CMD / Silicon Image 680 PATA support          
< >     SiS PATA support                              
< >     VIA PATA support                              
< >     Winbond SL82C105 PATA support                 
< >     Intel SCH PATA support <=== PATA支持
[ ] Multiple devices driver support (RAID and LVM)  ---> <===（磁盘阵列）和LVM（逻辑卷管理器，添加，删除逻辑分区）的需求
[ ] Fusion MPT device support  --->
IEEE 1394 (FireWire) support  --->
< > I2O device support  --->
[ ] Macintosh device drivers  ---> <=== Mac系统硬件设备驱动， 
[*] Network device support  --->
< >   Dummy net driver support                        
< >   Bonding driver support                          
< >   EQL (serial line load balancing) support        
< >   Universal TUN/TAP device driver support         
< >   Virtual ethernet pair device                    
< >   General Instruments Surfboard 1000              
< >   ARCnet support  ---> 
-*-   PHY Device support and infrastructure  ---> <=== PHY (物理层控制芯片)  
[ ]   Ethernet (10 or 100Mbit)  ---> <=== 如果你是百 M卡，请自行选择
[*]   Ethernet (1000 Mbit)  ---> // 选择自己对应的硬件
[ ]   Ethernet (10000 Mbit)  ---> <=== 如果你是万M卡，请自行选择
<>   Token Ring driver support  ---> <=== IBM的令牌环网，用以太网的忽略
[ ]     Wireless LAN  --->  <=== 不用无线网络
      *** Enable WiMAX (Networking options) to see the WiMAX drivers *** 
      USB Network Adapters  --->           
[ ]   Wan interfaces support  --->                    
<>   FDDI driver support <=== 光纤卡驱动，相信没几个人能用上这玩意
< >   PPP (point-to-point protocol) support           
< >   SLIP (serial line) support                      
[ ]   Fibre Channel driver support
[ ]    Network console logging support
[ ]    VMware VMXNET3 ethernet driver
[ ] ISDN support  --->       
< > Telephony support  --->  
Input device support  --->
-*- Generic input layer (needed for keyboard, mouse, ...)
-*-   Support for memoryless force-feedback devices   
<>   Polled input device skeleton  <=== 一种周期性轮询硬件状态的驱动，去掉后没什么副作用
      *** Userland interfaces ***                     
-*-   Mouse interface
[ ]     Provide legacy /dev/psaux device 
(1024)  Horizontal screen resolution                  
(768)   Vertical screen resolution                    
< >   Joystick interface                              
<*>   Event interface  // 将输入设备的事件存储到/dev/input/eventX供应用程序读取
< >   Event debugging                                 
      *** Input Device Drivers ***                    
-*-   Keyboards  --->
[*]   Mice  --->                             
[]   Joysticks/Gamepads  --->  <=== 游戏设备
[]   Tablets  ---> <=== 平板PC
[]   Touchscreens  --->  <=== 触摸屏
[]   Miscellaneous devices  ---> <=== 杂七杂八的驱动，扬声器，笔记本扩展按键等
Hardware I/O ports  --->
Character devices  ---> 
-*- Virtual terminal         
[*]   Support for binding and unbinding console drivers // 在某些系统上可以使用多个控制台驱动程序(如framebuffer控制台驱动程序),该选项使得你可以选择其中之一 ，我一般只用默认的虚拟终端
[] /dev/kmem virtual device support  <=== 支持/dev/kmem设备，很少用    
[] Non-standard serial port support  <===非标准的串口设备
 Serial drivers  --->
< > 8250/16550 and compatible serial support <=== 兼容一些老式的串口设备，一般不用
    *** Non-8250 serial port support ***
< > Digi International NEO PCI Support
-*- Unix98 PTY support       
[ ]   Support multiple instances of devpts            
[ ] Legacy (BSD) PTY support 
< > IPMI top-level message handler  --->              
<*> Hardware Random Number Generator Core support     
< >   Timer IOMEM HW Random Number Generator support  
<*>   Intel HW Random Number Generator support    
<>   AMD HW Random Number Generator support  <=== AMD主板
< >   AMD Geode HW Random Number Generator support <===AMD主板
<>   VIA HW Random Number Generator support <=== VIA主板    
<> /dev/nvram support  <=== 直接存取CMOS，太危险，关
< > Siemens R3964 line discipline
< > Applicom intelligent fieldbus card support        
< > ACP Modem (Mwave) support
< > NatSemi PC8736x GPIO Support                      
< > NatSemi Base GPIO Support
< > AMD CS5535/CS5536 GPIO (Geode Companion Device)   
< > RAW driver (/dev/raw/rawN)
[*] HPET - High Precision Event Timer              
[ ]   Allow mmap of HPET     
< > Hangcheck timer
-*- I2C support  ---> // 感知硬件状态，比如温度，风扇转速
[ ] SPI support  --->        
    PPS support  --->        
[ ] GPIO Support  --->       
< > Dallas's 1-wire support  --->                     
-*- Power supply class support  --->                  
<*> Hardware Monitoring support  --->      
-*- Generic Thermal sysfs driver  --->                
[] Watchdog Timer Support  ---> <=== 系统监视程序
    Sonics Silicon Backplane  --->                    
[*]    Multifunction device drivers  --->                
[ ] Voltage and Current Regulator Support  --->       
< > Multimedia support  ---> 
Graphics support  --->
< > /dev/agpgart (AGP Support)  ---> < --- virtualbox不支持虚拟独立显卡
-*-  VGA arbitration
(16) Maximium number of GPU
[ ] Latop Hybird Graphics – GPU switch support           
<*> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)  --->
<> Lowlevel video output switch controls 
<> Support for frame buffer devices  --->
[ ] Backlight & LCD device support  --->  < --- 支持背光设置，比如pda等
    Display device support  ---> 
    Console display driver support  --->  
[ ]   Enable Scrollback Buffer in System RAM
<> Sound card support  --->  <===声卡
[] HID Devices  --->  <===人力工程学设备
[] USB support  --->  <=== 这个选项，对于跑物理机建议开启，因为有可能你的键盘是USB的， 
< > MMC/SD/SDIO card support  --->  
< > Sony MemoryStick card support (EXPERIMENTAL)  --->
[] LED Support  --->  <=== 发光二级管，应该是跟显示器相关的驱动， 
[ ] Accessibility support  --->
< > InfiniBand support  ---> 
[*] EDAC (Error Detection And Correction) reporting  ---> // 硬件故障repoting
<*> Real Time Clock  --->
[*] DMA Engine support  ---> 
[ ] Auxiliary Display support  --->                   
< > Userspace I/O drivers  --->                       
    TI VLYNQ  --->           
[ ] Staging drivers  --->    
[] X86 Platform Specific Device Drivers  ---> <=== 一些笔记本的驱动，

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Device Drivers --->

Generic Driver Options --->

(/sbin/hotplug) path to uevent helper

[*] Prevent firmware from being built

-*- Userspace firmware loading support

[*] Include in-kernel firmware blobs in kernel binary

() External firmware blobs to build into the kernel binary

[ ] Driver Core verbose debug messages

[ ] Managed device resources verbose debug messages <=== 管理设备资源的冗长调试信息，我不需要

<*> Connector - unified userspace <-> kernelspace linker --->// 内核空间与用户空间的信道

[*] Report process events to userspace // 报告处理时间给用户空间

< > Memory Technology Device (MTD) support --->

< > Parallel port support --->

-*- Plug and Play support --->

[ ] PNP debugging messages <=== 调试信息，

[ ] Block devices ---> <===比如ramdisk, 磁盘阵列，CD/DVD刻录等，详见内部选项

[ ] Misc devices ---> <=== 没有需要支持的杂项设备

< > ATA/ATAPI/MFM/RLL support --->

SCSI device support --->

< > RAID Transport Class

-*- SCSI device support

[] legacy /proc/scsi/ support <=== SCSI设备

*** SCSI support type (disk, tape, CD-ROM) ***

<*> SCSI disk support // 就算你用SATA，此选项也必选

< > SCSI tape support

< > SCSI OnStream SC-x0 tape support

<> SCSI CDROM support <=== SCSI设备

<> SCSI generic support <=== SCSI设备

< > SCSI media changer support

[ ] Probe all LUNs on each SCSI device

[] Verbose SCSI error reporting (kernel size +=12K) <=== SCSI设备

[ ] SCSI logging facility

[ ] Asynchronous SCSI scanning

SCSI Transports --->

<> Parallel SCSI (SPI) Transport Attributes <=== SCSI设备

< > FiberChannel Transport Attributes

< > iSCSI Transport Attributes

< > SAS Domain Transport Attributes

< > SRP Transport Attributes

[ ] SCSI low-level drivers --->

< > SCSI Device Handlers --->

< > OSD-Initiator library

Serial ATA (prod) and Parallel ATA (experimental) drivers --->

[*] Verbose ATA error reporting

[*] ATA ACPI Support

[ ] SATA Port Multiplier support <=== 我SATA设备，没有使用多路SATA/SATA Hub 的需求。Port Multiplier是南桥芯片提供的一种支持多块SATA设备，并共享总带宽的技术。

<*> AHCI SATA support

< > Platform AHCI SATA support

< > Inito 162x SATA support

< > Silicon Image 3124/3132 SATA support

[*] ATA SFF support // 选择自己硬件对应的驱动即可

< > ServerWorks Frodo / Apple K2 SATA support

<*> Intel ESB, ICH, PIIX3, PIIX4 PATA/SATA support // Intel ICH，G系列chipset driver

< > Marvell SATA support

< > NVIDIA SATA support

< > Pacific Digital ADMA support

< > Pacific Digital SATA QStor support

< > Promise SATA TX2/TX4 support

< > Silicon Image SATA support

< > SiS 964/965/966/180 SATA support

< > ULi Electronics SATA support

< > VIA SATA support

< > VITESSE VSC-7174 / INTEL 31244 SATA support

< > Initio 162x SATA support

< > ACPI firmware driver for PATA

< > ALi PATA support

< > AMD/NVidia PATA support <=== PATA支持

< > ARTOP 6210/6260 PATA support

< > ATI PATA support

< > CMD64x PATA support

< > CS5510/5520 PATA support

< > CS5530 PATA support

< > CS5536 PATA support

< > EFAR SLC90E66 support

< > Generic ATA support

< > HPT 366/368 PATA support

< > HPT 343/363 PATA support

< > IT8211/2 PATA support

< > JMicron PATA support

< > Compaq Triflex PATA support

< > Marvell PATA support via legacy mode

<> Intel PATA MPIIX support <=== PATA支持

< > Intel PATA old PIIX support <=== PATA支持

< > NETCELL Revolution RAID support

< > Nat Semi NS87410 PATA support

< > Nat Semi NS87415 PATA support

< > Older Promise PATA controller support

< > PC Tech RZ1000 PATA support

< > SC1200 PATA support

< > SERVERWORKS OSB4/CSB5/CSB6/HT1000 PATA support

< > Promise PATA 2027x support

< > CMD / Silicon Image 680 PATA support

< > SiS PATA support

< > VIA PATA support

< > Winbond SL82C105 PATA support

< > Intel SCH PATA support <=== PATA支持

[ ] Multiple devices driver support (RAID and LVM) ---> <===（磁盘阵列）和LVM（逻辑卷管理器，添加，删除逻辑分区）的需求

[ ] Fusion MPT device support --->

IEEE 1394 (FireWire) support --->

< > I2O device support --->

[ ] Macintosh device drivers ---> <=== Mac系统硬件设备驱动，

[*] Network device support --->

< > Dummy net driver support

< > Bonding driver support

< > EQL (serial line load balancing) support

< > Universal TUN/TAP device driver support

< > Virtual ethernet pair device

< > General Instruments Surfboard 1000

< > ARCnet support --->

-*- PHY Device support and infrastructure ---> <=== PHY (物理层控制芯片)

[ ] Ethernet (10 or 100Mbit) ---> <=== 如果你是百 M卡，请自行选择

[*] Ethernet (1000 Mbit) ---> // 选择自己对应的硬件

[ ] Ethernet (10000 Mbit) ---> <=== 如果你是万M卡，请自行选择

<> Token Ring driver support ---> <=== IBM的令牌环网，用以太网的忽略

[ ] Wireless LAN ---> <=== 不用无线网络

*** Enable WiMAX (Networking options) to see the WiMAX drivers ***

USB Network Adapters --->

[ ] Wan interfaces support --->

<> FDDI driver support <=== 光纤卡驱动，相信没几个人能用上这玩意

< > PPP (point-to-point protocol) support

< > SLIP (serial line) support

[ ] Fibre Channel driver support

[ ] Network console logging support

[ ] VMware VMXNET3 ethernet driver

[ ] ISDN support --->

< > Telephony support --->

Input device support --->

-*- Generic input layer (needed for keyboard, mouse, ...)

-*- Support for memoryless force-feedback devices

<> Polled input device skeleton <=== 一种周期性轮询硬件状态的驱动，去掉后没什么副作用

*** Userland interfaces ***

-*- Mouse interface

[ ] Provide legacy /dev/psaux device

(1024) Horizontal screen resolution

(768) Vertical screen resolution

< > Joystick interface

<*> Event interface // 将输入设备的事件存储到/dev/input/eventX供应用程序读取

< > Event debugging

*** Input Device Drivers ***

-*- Keyboards --->

[*] Mice --->

[] Joysticks/Gamepads ---> <=== 游戏设备

[] Tablets ---> <=== 平板PC

[] Touchscreens ---> <=== 触摸屏

[] Miscellaneous devices ---> <=== 杂七杂八的驱动，扬声器，笔记本扩展按键等

Hardware I/O ports --->

Character devices --->

-*- Virtual terminal

[*] Support for binding and unbinding console drivers // 在某些系统上可以使用多个控制台驱动程序(如framebuffer控制台驱动程序),该选项使得你可以选择其中之一，我一般只用默认的虚拟终端

[] /dev/kmem virtual device support <=== 支持/dev/kmem设备，很少用

[] Non-standard serial port support <===非标准的串口设备

Serial drivers --->

< > 8250/16550 and compatible serial support <=== 兼容一些老式的串口设备，一般不用

*** Non-8250 serial port support ***

< > Digi International NEO PCI Support

-*- Unix98 PTY support

[ ] Support multiple instances of devpts

[ ] Legacy (BSD) PTY support

< > IPMI top-level message handler --->

<*> Hardware Random Number Generator Core support

< > Timer IOMEM HW Random Number Generator support

<*> Intel HW Random Number Generator support

<> AMD HW Random Number Generator support <=== AMD主板

< > AMD Geode HW Random Number Generator support <===AMD主板

<> VIA HW Random Number Generator support <=== VIA主板

<> /dev/nvram support <=== 直接存取CMOS，太危险，关

< > Siemens R3964 line discipline

< > Applicom intelligent fieldbus card support

< > ACP Modem (Mwave) support

< > NatSemi PC8736x GPIO Support

< > NatSemi Base GPIO Support

< > AMD CS5535/CS5536 GPIO (Geode Companion Device)

< > RAW driver (/dev/raw/rawN)

[*] HPET - High Precision Event Timer

[ ] Allow mmap of HPET

< > Hangcheck timer

-*- I2C support ---> // 感知硬件状态，比如温度，风扇转速

[ ] SPI support --->

PPS support --->

[ ] GPIO Support --->

< > Dallas's 1-wire support --->

-*- Power supply class support --->

<*> Hardware Monitoring support --->

-*- Generic Thermal sysfs driver --->

[] Watchdog Timer Support ---> <=== 系统监视程序

Sonics Silicon Backplane --->

[*] Multifunction device drivers --->

[ ] Voltage and Current Regulator Support --->

< > Multimedia support --->

Graphics support --->

< > /dev/agpgart (AGP Support) ---> < --- virtualbox不支持虚拟独立显卡

-*- VGA arbitration

(16) Maximium number of GPU

[ ] Latop Hybird Graphics – GPU switch support

<*> Direct Rendering Manager (XFree86 4.1.0 and higher DRI support) --->

<> Lowlevel video output switch controls

<> Support for frame buffer devices --->

[ ] Backlight & LCD device support ---> < --- 支持背光设置，比如pda等

Display device support --->

Console display driver support --->

[ ] Enable Scrollback Buffer in System RAM

<> Sound card support ---> <===声卡

[] HID Devices ---> <===人力工程学设备

[] USB support ---> <=== 这个选项，对于跑物理机建议开启，因为有可能你的键盘是USB的，

< > MMC/SD/SDIO card support --->

< > Sony MemoryStick card support (EXPERIMENTAL) --->

[] LED Support ---> <=== 发光二级管，应该是跟显示器相关的驱动，

[ ] Accessibility support --->

< > InfiniBand support --->

[*] EDAC (Error Detection And Correction) reporting ---> // 硬件故障repoting

<*> Real Time Clock --->

[*] DMA Engine support --->

[ ] Auxiliary Display support --->

< > Userspace I/O drivers --->

TI VLYNQ --->

[ ] Staging drivers --->

[] X86 Platform Specific Device Drivers ---> <=== 一些笔记本的驱动，

如果你想了解更多的内核选项，可以参考kernel-options文件。

Kernel、系统管理

linux kernel定制（三）

2013 年 6 月 7 日 admin 发表回复

3 定制内核
转载请注明出处[By SELinux+]
我们在选择驱动中找到的2个驱动，这次我们要去实验一下。
实验环境:kernel-2.6.40.fc15内核，kernel-2.6.40是f15最新的内核。为了更好的方便使用，我们不使用前面示例中的kernel-2.6.38的内核，其框架基本一致。
1 以太网网卡驱动e1000e
2 CDROM驱动 BLK_DEV_SR
首先我们定制内核配置选项
1加载e1000e,去掉其他的网卡驱动。
2 取消CDROM驱动
下图为我们取消网卡的其他选项，仅选择Ethernet(1000Mbit)

下图为取消CDROM 支持

保存配置，进行编译

cp .config ../../../SOURCES/config-x86_64-generic
rpmbuild -bb kernel.spec

1 2	cp .config ../../../SOURCES/config-x86_64-generic rpmbuild -bb kernel.spec

编译安装后的效果如下：

[root@qfong.com ~]# uname -r

2.6.40.6-0.qf.fc15.x86_64

[root@qfong.com ~]# ping 8.8.8.8

PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_req=1 ttl=47 time=111 ms
64 bytes from 8.8.8.8: icmp_req=2 ttl=47 time=111 ms
64 bytes from 8.8.8.8: icmp_req=3 ttl=47 time=109 ms
^C
--- 8.8.8.8 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 109.565/111.052/111.850/1.087 ms

[root@qfong.com ~]# ls /dev/sr

ls: cannot access /dev/sr: No such file or directory

[root@qfong.com ~]# uname -r

2.6.40.6-0.qf.fc15.x86_64

[root@qfong.com ~]# ping 8.8.8.8

PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.

64 bytes from 8.8.8.8: icmp_req=1 ttl=47 time=111 ms

64 bytes from 8.8.8.8: icmp_req=2 ttl=47 time=111 ms

64 bytes from 8.8.8.8: icmp_req=3 ttl=47 time=109 ms

--- 8.8.8.8 ping statistics ---

3 packets transmitted, 3 received, 0% packet loss, time 2003ms

rtt min/avg/max/mdev = 109.565/111.052/111.850/1.087 ms

[root@qfong.com ~]# ls /dev/sr

ls: cannot access /dev/sr: No such file or directory

我们发现sr的设备不存在了。而网络可以正常使用

Kernel、系统管理

linux kernel定制（二）

2013 年 6 月 7 日 admin 发表回复

2.2寻找磁盘控制器
转载请注明出处 [By SELinux+]
本节为来实验效果，我们将进行稍微的去掉某个驱动，以达到设备无法运行的测试效果。
所有的块设备都显示在/sys/block和/sys/class/block中

[root@qfong.com ~]# tree -d /sys/block/ |egrep "hd|sd|sr"
├── sda -> ../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda
└── sr0 -> ../devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sr0

[root@qfong.com ~]# tree -d /sys/block/ |egrep "hd|sd|sr"

├── sda -> ../devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda

└── sr0 -> ../devices/pci0000:00/0000:00:1f.2/host2/target2:0:0/2:0:0:0/block/sr0

和之前的网络设备一样，我们这里寻找sr设备，该设备是一个cdrom，本节我们要卸载cdrom驱动。

[root@qfong.com ~]# ll /sys/block/sr0/
total 0
-r--r--r--. 1 root root 4096 Oct  9 02:14 alignment_offset
lrwxrwxrwx. 1 root root    0 Oct  9 02:14 bdi -> ../../../../../../../virtual/bdi/11:0
-r--r--r--. 1 root root 4096 Oct  9 02:14 capability
-r--r--r--. 1 root root 4096 Oct  8 20:46 dev
lrwxrwxrwx. 1 root root    0 Oct  9 02:14 device -> ../../../2:0:0:0
-r--r--r--. 1 root root 4096 Oct  9 02:14 discard_alignment
-r--r--r--. 1 root root 4096 Oct  9 02:14 events
-r--r--r--. 1 root root 4096 Oct  9 02:14 events_async
-rw-r--r--. 1 root root 4096 Oct  8 20:45 events_poll_msecs
-r--r--r--. 1 root root 4096 Oct  9 02:14 ext_range
drwxr-xr-x. 2 root root    0 Oct  8 20:46 holders
-r--r--r--. 1 root root 4096 Oct  9 02:14 inflight
drwxr-xr-x. 2 root root    0 Oct  9 01:07 power
drwxr-xr-x. 3 root root    0 Oct  8 20:46 queue
-r--r--r--. 1 root root 4096 Oct  8 20:46 range
-r--r--r--. 1 root root 4096 Oct  8 20:46 removable
-r--r--r--. 1 root root 4096 Oct  9 02:14 ro
-r--r--r--. 1 root root 4096 Oct  9 02:14 size
drwxr-xr-x. 2 root root    0 Oct  8 20:46 slaves
-r--r--r--. 1 root root 4096 Oct  9 02:14 stat
lrwxrwxrwx. 1 root root    0 Oct  8 20:46 subsystem -> ../../../../../../../../class/block
drwxr-xr-x. 2 root root    0 Oct  9 01:07 trace
-rw-r--r--. 1 root root 4096 Oct  8 20:46 uevent

[root@qfong.com ~]# ll /sys/block/sr0/

total 0

-r--r--r--. 1 root root 4096 Oct 9 02:14 alignment_offset

lrwxrwxrwx. 1 root root 0 Oct 9 02:14 bdi -> ../../../../../../../virtual/bdi/11:0

-r--r--r--. 1 root root 4096 Oct 9 02:14 capability

-r--r--r--. 1 root root 4096 Oct 8 20:46 dev

lrwxrwxrwx. 1 root root 0 Oct 9 02:14 device -> ../../../2:0:0:0

-r--r--r--. 1 root root 4096 Oct 9 02:14 discard_alignment

-r--r--r--. 1 root root 4096 Oct 9 02:14 events

-r--r--r--. 1 root root 4096 Oct 9 02:14 events_async

-rw-r--r--. 1 root root 4096 Oct 8 20:45 events_poll_msecs

-r--r--r--. 1 root root 4096 Oct 9 02:14 ext_range

drwxr-xr-x. 2 root root 0 Oct 8 20:46 holders

-r--r--r--. 1 root root 4096 Oct 9 02:14 inflight

drwxr-xr-x. 2 root root 0 Oct 9 01:07 power

drwxr-xr-x. 3 root root 0 Oct 8 20:46 queue

-r--r--r--. 1 root root 4096 Oct 8 20:46 range

-r--r--r--. 1 root root 4096 Oct 8 20:46 removable

-r--r--r--. 1 root root 4096 Oct 9 02:14 ro

-r--r--r--. 1 root root 4096 Oct 9 02:14 size

drwxr-xr-x. 2 root root 0 Oct 8 20:46 slaves

-r--r--r--. 1 root root 4096 Oct 9 02:14 stat

lrwxrwxrwx. 1 root root 0 Oct 8 20:46 subsystem -> ../../../../../../../../class/block

drwxr-xr-x. 2 root root 0 Oct 9 01:07 trace

-rw-r--r--. 1 root root 4096 Oct 8 20:46 uevent

我们现在沿着sysfs中的设备进行寻找这个设备驱动

[root@qfong.com sr0]#ll /sys/devices/pci0000\:00/0000\:00\:1f.2/host2/target2\:0\:0/2\:0\:0\:0/
total 0
drwxr-xr-x. 3 root root    0 Oct  8 20:46 block
drwxr-xr-x. 3 root root    0 Oct  8 20:46 bsg
--w-------. 1 root root 4096 Oct  9 02:17 delete
-r--r--r--. 1 root root 4096 Oct  9 02:17 device_blocked
-rw-r--r--. 1 root root 4096 Oct  9 02:17 dh_state
lrwxrwxrwx. 1 root root    0 Oct  9 02:17 driver -> ../../../../../../bus/scsi/drivers/sr
-r--r--r--. 1 root root 4096 Oct  8 20:46 evt_media_change
lrwxrwxrwx. 1 root root    0 Oct  9 02:17 generic -> scsi_generic/sg1
-r--r--r--. 1 root root 4096 Oct  9 02:17 iocounterbits
-r--r--r--. 1 root root 4096 Oct  9 02:17 iodone_cnt
-r--r--r--. 1 root root 4096 Oct  9 02:17 ioerr_cnt
-r--r--r--. 1 root root 4096 Oct  9 02:17 iorequest_cnt
-r--r--r--. 1 root root 4096 Oct  9 01:07 modalias
-r--r--r--. 1 root root 4096 Oct  8 20:46 model
drwxr-xr-x. 2 root root    0 Oct  9 01:07 power
-rw-r--r--. 1 root root 4096 Oct  9 02:17 queue_depth
-rw-r--r--. 1 root root 4096 Oct  9 02:17 queue_ramp_up_period
-r--r--r--. 1 root root 4096 Oct  9 02:17 queue_type
--w-------. 1 root root 4096 Oct  9 02:17 rescan
-r--r--r--. 1 root root 4096 Oct  9 02:17 rev
drwxr-xr-x. 3 root root    0 Oct  8 20:46 scsi_device
drwxr-xr-x. 3 root root    0 Oct  8 20:46 scsi_generic
-r--r--r--. 1 root root 4096 Oct  8 20:46 scsi_level
-rw-r--r--. 1 root root 4096 Oct  9 02:17 state
lrwxrwxrwx. 1 root root    0 Oct  8 20:46 subsystem -> ../../../../../../bus/scsi
-rw-r--r--. 1 root root 4096 Oct  9 02:17 sw_activity
-rw-r--r--. 1 root root 4096 Oct  9 02:17 timeout
-r--r--r--. 1 root root 4096 Oct  8 20:46 type
-rw-r--r--. 1 root root 4096 Oct  8 20:46 uevent
-rw-r--r--. 1 root root 4096 Oct  9 02:17 unload_heads
-r--r--r--. 1 root root 4096 Oct  8 20:46 vendor

[root@qfong.com sr0]#ll /sys/devices/pci0000\:00/0000\:00\:1f.2/host2/target2\:0\:0/2\:0\:0\:0/

total 0

drwxr-xr-x. 3 root root 0 Oct 8 20:46 block

drwxr-xr-x. 3 root root 0 Oct 8 20:46 bsg

--w-------. 1 root root 4096 Oct 9 02:17 delete

-r--r--r--. 1 root root 4096 Oct 9 02:17 device_blocked

-rw-r--r--. 1 root root 4096 Oct 9 02:17 dh_state

lrwxrwxrwx. 1 root root 0 Oct 9 02:17 driver -> ../../../../../../bus/scsi/drivers/sr

-r--r--r--. 1 root root 4096 Oct 8 20:46 evt_media_change

lrwxrwxrwx. 1 root root 0 Oct 9 02:17 generic -> scsi_generic/sg1

-r--r--r--. 1 root root 4096 Oct 9 02:17 iocounterbits

-r--r--r--. 1 root root 4096 Oct 9 02:17 iodone_cnt

-r--r--r--. 1 root root 4096 Oct 9 02:17 ioerr_cnt

-r--r--r--. 1 root root 4096 Oct 9 02:17 iorequest_cnt

-r--r--r--. 1 root root 4096 Oct 9 01:07 modalias

-r--r--r--. 1 root root 4096 Oct 8 20:46 model

drwxr-xr-x. 2 root root 0 Oct 9 01:07 power

-rw-r--r--. 1 root root 4096 Oct 9 02:17 queue_depth

-rw-r--r--. 1 root root 4096 Oct 9 02:17 queue_ramp_up_period

-r--r--r--. 1 root root 4096 Oct 9 02:17 queue_type

--w-------. 1 root root 4096 Oct 9 02:17 rescan

-r--r--r--. 1 root root 4096 Oct 9 02:17 rev

drwxr-xr-x. 3 root root 0 Oct 8 20:46 scsi_device

drwxr-xr-x. 3 root root 0 Oct 8 20:46 scsi_generic

-r--r--r--. 1 root root 4096 Oct 8 20:46 scsi_level

-rw-r--r--. 1 root root 4096 Oct 9 02:17 state

lrwxrwxrwx. 1 root root 0 Oct 8 20:46 subsystem -> ../../../../../../bus/scsi

-rw-r--r--. 1 root root 4096 Oct 9 02:17 sw_activity

-rw-r--r--. 1 root root 4096 Oct 9 02:17 timeout

-r--r--r--. 1 root root 4096 Oct 8 20:46 type

-rw-r--r--. 1 root root 4096 Oct 8 20:46 uevent

-rw-r--r--. 1 root root 4096 Oct 9 02:17 unload_heads

-r--r--r--. 1 root root 4096 Oct 8 20:46 vendor

我们看到这个scsi磁盘控制器控制着该设备，因此scsi设备是我们必须要加到我们内核配置里面的，因为scsi控制着scsi总线上的所有磁盘设备。我们主要目标是找到控制该设备的硬件驱动
接着我们继续寻找硬件的驱动
在sysfs链接中返回上一级目录，继续寻找，试着找出控制硬件的驱动

[root@qfong.com 2:0:0:0]# cd ..
[root@qfong.com target2:0:0]# ll
total 0
drwxr-xr-x. 7 root root    0 Oct  8 20:46 2:0:0:0
drwxr-xr-x. 2 root root    0 Oct  9 01:07 power
lrwxrwxrwx. 1 root root    0 Oct  8 20:46 subsystem -> ../../../../../bus/scsi
-rw-r--r--. 1 root root 4096 Oct  8 20:46 uevent

[root@qfong.com 2:0:0:0]# cd ..

[root@qfong.com target2:0:0]# ll

total 0

drwxr-xr-x. 7 root root 0 Oct 8 20:46 2:0:0:0

drwxr-xr-x. 2 root root 0 Oct 9 01:07 power

lrwxrwxrwx. 1 root root 0 Oct 8 20:46 subsystem -> ../../../../../bus/scsi

-rw-r--r--. 1 root root 4096 Oct 8 20:46 uevent

该目录下没有driver的链接，我们继续返回上一级目录

[root@qfong.com target2:0:0]# cd ..
[root@qfong.com host2]# ll
total 0
drwxr-xr-x. 2 root root    0 Oct  9 01:07 power
drwxr-xr-x. 3 root root    0 Oct  8 20:46 scsi_host
lrwxrwxrwx. 1 root root    0 Oct  8 20:46 subsystem -> ../../../../bus/scsi
drwxr-xr-x. 4 root root    0 Oct  8 20:46 target2:0:0
-rw-r--r--. 1 root root 4096 Oct  8 20:46 uevent

[root@qfong.com target2:0:0]# cd ..

[root@qfong.com host2]# ll

total 0

drwxr-xr-x. 2 root root 0 Oct 9 01:07 power

drwxr-xr-x. 3 root root 0 Oct 8 20:46 scsi_host

lrwxrwxrwx. 1 root root 0 Oct 8 20:46 subsystem -> ../../../../bus/scsi

drwxr-xr-x. 4 root root 0 Oct 8 20:46 target2:0:0

-rw-r--r--. 1 root root 4096 Oct 8 20:46 uevent

该目录下仍没有driver的链接，我们继续返回上一级目录

[root@qfong.com host2]# cd ..
[root@qfong.com 0000:00:1f.2]# ll
total 0
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata1
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata2
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata3
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata4
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata5
drwxr-xr-x. 5 root root    0 Oct  8 20:46 ata6
-rw-r--r--. 1 root root 4096 Oct  9 04:35 broken_parity_status
-r--r--r--. 1 root root 4096 Oct  8 20:46 class
-rw-r--r--. 1 root root  256 Oct  8 20:46 config
-r--r--r--. 1 root root 4096 Oct  9 04:35 consistent_dma_mask_bits
-r--r--r--. 1 root root 4096 Oct  8 20:46 device
-r--r--r--. 1 root root 4096 Oct  9 04:35 dma_mask_bits
lrwxrwxrwx. 1 root root    0 Oct  8 20:46 driver -> ../../../bus/pci/drivers/ahci
-rw-------. 1 root root 4096 Oct  9 04:35 enable
lrwxrwxrwx. 1 root root    0 Oct  9 04:35 firmware_node -> ../../LNXSYSTM:00/device:00/PNP0A03:00/device:1f

[root@qfong.com host2]# cd ..

[root@qfong.com 0000:00:1f.2]# ll

total 0

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata1

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata2

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata3

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata4

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata5

drwxr-xr-x. 5 root root 0 Oct 8 20:46 ata6

-rw-r--r--. 1 root root 4096 Oct 9 04:35 broken_parity_status

-r--r--r--. 1 root root 4096 Oct 8 20:46 class

-rw-r--r--. 1 root root 256 Oct 8 20:46 config

-r--r--r--. 1 root root 4096 Oct 9 04:35 consistent_dma_mask_bits

-r--r--r--. 1 root root 4096 Oct 8 20:46 device

-r--r--r--. 1 root root 4096 Oct 9 04:35 dma_mask_bits

lrwxrwxrwx. 1 root root 0 Oct 8 20:46 driver -> ../../../bus/pci/drivers/ahci

-rw-------. 1 root root 4096 Oct 9 04:35 enable

lrwxrwxrwx. 1 root root 0 Oct 9 04:35 firmware_node -> ../../LNXSYSTM:00/device:00/PNP0A03:00/device:1f

该目录下我们看到了为的驱动程序了。该驱动为 driver -> ../../../bus/pci/drivers/ahci
achi便是我们要寻找的驱动,但是achi驱动是inter芯片组的驱动，对我们来说这个驱动不是我们真正想要的，我们要分析我们的设备，cdrom是在scsi设备上的，我们要找到scsi的接口。接下来，我们继续寻找最终的驱动

[root@qfong.com linux-2.6.38.x86_64]# find -type f -name Makefile |xargs grep "ahci"
./drivers/ata/Makefile:obj-$(CONFIG_SATA_AHCI)+= ahci.o libahci.o
./drivers/ata/Makefile:obj-$(CONFIG_SATA_ACARD_AHCI)+= acard-ahci.o libahci.o
./drivers/ata/Makefile:obj-$(CONFIG_SATA_AHCI_PLATFORM)+= ahci_platform.o libahci.o

[root@qfong.com linux-2.6.38.x86_64]# find -type f -name Makefile |xargs grep "ahci"

./drivers/ata/Makefile:obj-$(CONFIG_SATA_AHCI)+= ahci.o libahci.o

./drivers/ata/Makefile:obj-$(CONFIG_SATA_ACARD_AHCI)+= acard-ahci.o libahci.o

./drivers/ata/Makefile:obj-$(CONFIG_SATA_AHCI_PLATFORM)+= ahci_platform.o libahci.o

我们回到上一层driver -> ../../../../../../bus/scsi/drivers/sr
我们看到我们的驱动指向的是sr

[root@qfong.com linux-2.6.38.x86_64]# find -type f -name "Makefile" |xargs grep  "sr" |grep "CONFIG_" |grep "scsi"
./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_SRP_ATTRS)+= scsi_transport_srp.o
./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_ARCMSR)+= arcmsr/
./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_SRP)+= libsrp.o
./drivers/scsi/Makefile:obj-$(CONFIG_BLK_DEV_SR)+= sr_mod.o
./drivers/scsi/arcmsr/Makefile:obj-$(CONFIG_SCSI_ARCMSR)：= arcmsr.o

[root@qfong.com linux-2.6.38.x86_64]# find -type f -name "Makefile" |xargs grep "sr" |grep "CONFIG_" |grep "scsi"

./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_SRP_ATTRS)+= scsi_transport_srp.o

./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_ARCMSR)+= arcmsr/

./drivers/scsi/Makefile:obj-$(CONFIG_SCSI_SRP)+= libsrp.o

./drivers/scsi/Makefile:obj-$(CONFIG_BLK_DEV_SR)+= sr_mod.o

./drivers/scsi/arcmsr/Makefile:obj-$(CONFIG_SCSI_ARCMSR)：= arcmsr.o

我们猜想上图的sr_mod.o应该是我们所要寻找的驱动。
那么他指向的驱动为CONFIG_BLK_DEV_SR

如上图所示：我们看到来scsi CDROM 支持的选项。
当然了，寻找驱动很麻烦，我给大家准备了一个脚本，可以轻易的获得驱动。以上仅是对其分析的方法进行说明

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