Steve Chang wrote: > Here still has some questions > 1. As you said, run "rem_drv sd" and then run "rem_drv mydriver" > I did get "detach()" call. Every thing looks OK to release all > resources but later after "Fini()" is called and done, system hang. > Through traces, the kernel still dispatch interrupt to driver but > at this moment, all driver's resources have been removed already. > Does it mean my driver still missing handling something? We usually disable the interrupt and then waiting for all the commands coming back, then release the resource. > > 2. Another thing is after removing the driver not successful, reboot > the system and reload the driver "add_drv ..". Now driver can be > loaded but disks can’t be detected. The kernel only send cmd "0x12" > to detect hard disk and no more other commands. What happens to > kernel? Is there any easy to let kernel back on normal besides > reinstall the original kernel file? You can try rem_drv firstly and then add_drv to make sure all related info was correct on your system. If you can get the 0x12(inquiry) command, that means scsi_hba_probe was called, and it will send inquiry command to probe the disk, if command return successfully, then after tgt_init succeed, sd will be attached. You can try to figure out your problem following it.
Thanks, Ada > > Thanks > Steve > > > > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Sent: Monday, May 05, 2008 5:23 AM > To: Steve Chang > Cc: [EMAIL PROTECTED]; driver-discuss@opensolaris.org > Subject: Re: [driver-discuss] SCSI HBA device driver unload question? > > If you want to unload your hba driver, you should make > sure your hba device has no child in the device tree via > "prtconf -D" > > And if there are some sd instance under your hba, you > can try "rem_drv sd" to unload the sd driver firstly, and > then unload your hba driver. But before you unload sd > driver, please make sure your boot system is not a SCSI > disk, that means it is not drived by sd driver. > > Thanks, > Ada > > Steve Chang wrote: >> Hello, >> Here is another question about driver unload. >> I've tried to unload the driver by "rem_drv mydriver" >> but it always reports "Device Busy" and if do it one more >> time, it said driver is removed but you need to reboot >> the system to take effect. From debugging trace, I didn't >> see "detach" routine is called? >> >> At this moment, there is no I/O activity but HBA firmware >> naturally will keep interrupting HBA for service even it is >> a null interrupt. In this case, how to handle that so my driver >> can stop the interrupt first, then remove system resources >> when users want to remove the driver. >> >> >> Thanks >> Steve >> >> >> _______________________________________________ >> driver-discuss mailing list >> driver-discuss@opensolaris.org >> http://mail.opensolaris.org/mailman/listinfo/driver-discuss >> > _______________________________________________ driver-discuss mailing list driver-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/driver-discuss
