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linux上面的硬件没有驱动，如何找驱动呢？比如一块光纤卡没有驱动。
首先要取得lspci信息，知道光纤卡的相关信息 

root@localhost /]# lspci 0e:00.0 Fibre Channel: QLogic Corp.: Unknown device 2432 (rev 03)

这个Unknow device就是光纤卡Fibre Channel，而且是QLogic的光纤卡。前面的硬件id需要知道0e:00.0。
然后使用lspci -nv参数继续取信息

 

[root@localhost /]# lspci -nv 0e:00.0 Class 0c04: 1077:2432 (rev 03) Subsystem: 103c:7040 Flags: bus master, fast devsel, latency 0, IRQ 177 I/O ports at 5000 [size=256] Memory at fdff0000 (64-bit, non-prefetchable) [size=16K] Capabilities: [44] Power Management version 2 Capabilities: [4c] Express Endpoint IRQ 0 Capabilities: [64] Message Signalled Interrupts: 64bit+ Queue=0/4 Enable- Capabilities: [74] Vital Product Data Capabilities: [7c] MSI-X: Enable- Mask- TabSize=16 Capabilities: [100] Advanced Error Reporting Capabilities: [138] Power Budgeting

从0e:00.0可以确定光纤卡的信息是如上部分，其中总要的是“1077:2432”。
在系统中有一个文件/usr/share/hwdata/pcitable，这个文件中存放这系统所有支持和不支持的硬件信息。其中1077代表的厂家QLogic，2432是卡的型号。
那么，现在我拿到一个驱动包，里面有很多模块，到底这个包里的模块是否支持这块卡？到底哪个模块支持这个卡呢？

 

[root@rac01 ~]# tar xvfz qla2xxx-8.01.60-dc5-ia32.tgz lib/ lib/modules/ lib/modules/2.6.9-11.19AXhugemem/ lib/modules/2.6.9-11.19AXhugemem/kernel/ lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/ lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/scsi/ lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/scsi/qla2xxx/ lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/scsi/qla2xxx/qla6312.ko lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/scsi/qla2xxx/qla2300.ko lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/scsi/qla2xxx/qla2100.ko lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/scsi/qla2xxx/qla2xxx.ko lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/scsi/qla2xxx/qla2322.ko lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/scsi/qla2xxx/qla2xxx_conf.ko lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/scsi/qla2xxx/qla2200.ko lib/modules/2.6.9-11.19AXhugemem/kernel/drivers/scsi/qla2xxx/qla2xip.ko lib/modules/2.6.9-11.19AX/ lib/modules/2.6.9-11.19AX/kernel/ lib/modules/2.6.9-11.19AX/kernel/drivers/ lib/modules/2.6.9-11.19AX/kernel/drivers/scsi/ lib/modules/2.6.9-11.19AX/kernel/drivers/scsi/qla2xxx/ lib/modules/2.6.9-11.19AX/kernel/drivers/scsi/qla2xxx/qla6312.ko lib/modules/2.6.9-11.19AX/kernel/drivers/scsi/qla2xxx/qla2300.ko lib/modules/2.6.9-11.19AX/kernel/drivers/scsi/qla2xxx/qla2100.ko lib/modules/2.6.9-11.19AX/kernel/drivers/scsi/qla2xxx/qla2xxx.ko lib/modules/2.6.9-11.19AX/kernel/drivers/scsi/qla2xxx/qla2322.ko lib/modules/2.6.9-11.19AX/kernel/drivers/scsi/qla2xxx/qla2xxx_conf.ko lib/modules/2.6.9-11.19AX/kernel/drivers/scsi/qla2xxx/qla2200.ko lib/modules/2.6.9-11.19AX/kernel/drivers/scsi/qla2xxx/qla2xip.ko lib/modules/2.6.9-11.19AXsmp/ lib/modules/2.6.9-11.19AXsmp/kernel/ lib/modules/2.6.9-11.19AXsmp/kernel/drivers/ lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/ lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/qla2xxx/ lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/qla2xxx/qla6312.ko lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/qla2xxx/qla2300.ko lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/qla2xxx/qla2100.ko lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/qla2xxx/qla2xxx.ko lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/qla2xxx/qla2322.ko lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/qla2xxx/qla2xxx_conf.ko lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/qla2xxx/qla2200.ko lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/qla2xxx/qla2xip.ko  [root@rac01 ~]# ls lib/modules/2.6.9-11.19AXsmp/kernel/drivers/scsi/qla2xxx qla2100.ko  qla2300.ko  qla2xip.ko       qla2xxx.ko qla2200.ko  qla2322.ko  qla2xxx_conf.ko  qla6312.ko

现在这8个模块，到底是否支持，需要我们看每个模块的信息。首先从qla2xxx开始吧。

[root@rac01 qla2xxx]# modinfo qla2xxx.ko filename: qla2xxx.ko parm: ql2xmaxqdepth:Maximum queue depth to report for target devices. parm: ql2xlogintimeout:Login timeout value in seconds. parm: qlport_down_retry:Maximum number of command retries to a port that returnsa PORT-DOWN status. parm: ql2xretrycount:Maximum number of mid-layer retries allowed for a command. Default value is 20, parm: displayConfig:If 1 then display the configuration used in /etc/modprobe.conf. parm: ql2xplogiabsentdevice:Option to enable PLOGI to devices that are not present after a Fabric scan. This is needed for several broken switches.Default is 0 - no PLOGI. 1 - perfom PLOGI. parm: ql2xenablezio:Option to enable ZIO:If 1 then enable it otherwise use the default set in the NVRAM. Default is 0 : disabled parm: ql2xintrdelaytimer:ZIO: Waiting time for Firmware before it generates an interrupt to the host to notify completion of request. parm: ConfigRequired:If 1, then only configured devices passed in through theql2xopts parameter will be presented to the OS parm: Bind:Target persistent binding method: 0 by Portname (default); 1 by PortID; 2 by Nodename. parm: ql2xsuspendcount:Number of 6-second suspend iterations to perform while a target returns a <NOT READY> status. Default is 10 iterations. parm: ql2xdoinitscan:Signal mid-layer to perform scan after driver load: 0 -- no signal sent to mid-layer. parm: ql2xloginretrycount:Specify an alternate value for the NVRAM login retry count. parm: ql2xprocessnotready:Option to disable handling of NOT-READY in the driver. Default is 1 - Handled by the driver. Set to 0 - Disable the handling inside the driver parm: ql2xprocessrscn:Option to enable port RSCN handling via a series of lessfabric intrusive ADISCs and PLOGIs. parm: ql2xioctltimeout:IOCTL timeout value in seconds for pass-thur commands. Default is 66 seconds. parm: extended_error_logging:Option to enable extended error logging, Default is 0 - no logging. 1 - log errors. parm: ql2xfwloadbin:Option to enable loading of ISP24xx firmware via the request_firmware() (hotplug) interface. If enabled, a file, ql2400_fw.bin, (containing the firmware image) should be hotplug accessible. parm: ql2xfdmienable:Enables FDMI registratons Default is 0 - no FDMI. 1 - perfom FDMI. author: QLogic Corporation description: QLogic Fibre Channel HBA Driver license: GPL version: 8.01.60 parm: ql2xfailover:Driver failover support: 0 to disable; 1 to enable. parm: recoveryTime:Recovery time in seconds before a target device is sent I/O after a failback is performed. parm: failbackTime:Delay in seconds before a failback is performed. parm: MaxPathsPerDevice:Maximum number of paths to a device. Default 8. parm: MaxRetriesPerPath:How many retries to perform on the current path before failing over to the next path in the path list. parm: MaxRetriesPerIo:How many total retries to do before failing the command and returning to the OS with a DID_NO_CONNECT status. parm: qlFailoverNotifyType:Failover notification mechanism to use when a failover or failback occurs. parm: ql2xlbType:Load Balance Method : (0) None (1) static load balance and Default : 0 All the luns exposed on the first active path : 1 For static load balance across active optimised controller ports parm: ql2xexcludemodel:Exclude device models from being marked as failover capable.Combine one or more of the following model numbers into an exclusion mask: 0x20 - HSV210, 0x10 - DSXXX, 0x04 - HSV110, 0x02 - MSA1000, 0x01 - XP128. parm: ql2xtgtemul:Enable/Disable target combining emulation.Default : 1 Enable target failover emulation for targets created by lunid matching : 0 Disable target failover emulation vermagic: 2.6.9-11.19AXsmp SMP 686 REGPARM 4KSTACKS gcc-3.4 depends: scsi_mod alias: pci:v00001077d00002422sv*sd*bc*sc*i* alias: pci:v00001077d00002432sv*sd*bc*sc*i*

主要看最后以alias开头的两行，其中的1077对应卡的厂家，后面的2432、2422是卡的型号。
正好，这个qla2xxx正好支持这个光纤卡。