ATA driver(SMART)

[Ana Yuseepi <anayuseepi yahoo com>]

Hello, I need some guidance here:
 
I would like to send return_smart_status command to an
 IDE device. This also returns some valuable data in
 sector_count register.
 
 (1) I have tried using direct inw(), inb_p(),
functions. But this would cause some lost_interrupt to
 happen and at some times, cause the OS to hang. What
shall I do? Would inw(), inb_p() be not applicable?
 
 (2) I have also tried HDIO_DRIVE_CMD. However, this
doesn't return the data in the sector_count register
after the RETURN_SMART_STATUS command. Or does it?
 
 
 Is there anywhere I can find the source code that
supports the HDIO_DRIVE_CMD request to ioctl? I think
my program lacks some locking or some setting to
disallow other process to access the device.
 
Or does anyone have a good suggestion?
 
Regards,

-Ana


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