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ACPI support for SATA/PATA

zhao, forrest linux-ide 1 version In review

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  1. v1 Latest2 patches 12 repliesIn review

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/2libata: implement to get tf's from _GTF and execute themDocumentation/kernel-parameters.txt drivers/scsi/Kconfig drivers/scsi/Makefile +4 more+714 -05 replies
2/2libata: implement setting _SDDdrivers/scsi/libata-acpi.c drivers/scsi/libata-core.c drivers/scsi/libata.h+110 -02 replies

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Cover letter [PATCH 0/2]ACPI support for SATA/PATA

Hello, all

In ACPI spec 3.0, section 9.9 defines 4 objects for PATA/SATA:

_GTF is for both PATA and SATA, which is used to return ATA task file needed to re-init the drive;
_SDD is SATA-only object, which is used to inform the platform of the type of device attached to a port;
_GTM and _STM are PATA-only objects, which are used to get/set PATA timing information(i.e. PIO and DMA speed).

In this patch set,
ata_acpi_exec_tfs() is for getting ATA task file from _GTF and executing them for a given drive;
ata_acpi_push_id() is for setting _SDD.

NOTE: this patch doesn't include the support for _GTM and _STM because libata defines ->set_piomode(), ->set_dmamode() callbacks for LLDD, which do the same work as _GTM and _STM. So I think it's not necessary to provide redundant functionality by _GTM and _STM.

Randy,
I'll add your sign-off line after you review the patch.

Thanks,
Forrest

Read the cover letter in its thread