>> Is there any way to read PMP registers after hardreset/softreset?
>> SATA Controller is marvell 88SX7042 and driver is sata_mv.
>> I try to send 0xE4 and 0xE6 command to read/write PMP registers:
>
> ..
>>
>> if (ioctl(fd, SG_IO, &io_hdr) == -1) {
>
> ..
>
> No, there is no existing way to access PMP registers from user space.
>
But what's the difference in dealing with '0xE4' and '0xE8' commands.
I found that only the two commands will reset the link
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