* Re: Help Needed Reading / Poling the ATA Status Register
[not found] <c0cd3750-e4b0-4716-83a6-b7f8d7ef1156@y5g2000hsf.googlegroups.com>
@ 2008-01-31 0:20 ` Robert Hancock
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From: Robert Hancock @ 2008-01-31 0:20 UTC (permalink / raw)
To: frank.priest@gmail.com; +Cc: linux-kernel
frank.priest@gmail.com wrote:
> I am currently writing some code to send some ATA commands directly to
> the drive using ioctl and SG_IO which seems to work fine. However I
> also need to read the ATA status register values in real time which I
> am unsure how to do.
>
> I have seen in the libata developers guide the following functions to
> read the status and alternative status registers:-
>
> u8 (*check_status)(struct ata_port *ap);
> u8 (*check_altstatus)(struct ata_port *ap);
> u8 (*check_err)(struct ata_port *ap);
>
> However I have no idea how to access these functions directly or even
> if this is the best way to go about it. Any help at all would be much
> appreciated.
First question is why you need to poll the status register, since quite
likely there is a better solution to whatever that reason is..
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2008-01-31 0:20 ` Help Needed Reading / Poling the ATA Status Register Robert Hancock
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