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| author | Tejun Heo <htejun@gmail.com> | 2007-05-15 03:28:16 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-07-09 12:17:32 -0400 |
| commit | 64578a3de723d502621860f9d4d28f34d001b066 (patch) | |
| tree | 821e7ad8e8d6c3a0f3224b479ff000e00001a165 /include | |
| parent | e5fa24dfdb522b642dbe9b8b1b692f68dce89835 (diff) | |
| download | kernel_samsung_smdk4412-64578a3de723d502621860f9d4d28f34d001b066.zip kernel_samsung_smdk4412-64578a3de723d502621860f9d4d28f34d001b066.tar.gz kernel_samsung_smdk4412-64578a3de723d502621860f9d4d28f34d001b066.tar.bz2 | |
libata-acpi: implement _GTM/_STM support
Implement _GTM/_STM support. acpi_gtm is added to ata_port which
stores _GTM parameters over suspend/resume cycle. A new hook
ata_acpi_on_suspend() is responsible for storing _GTM parameters
during suspend. _STM is executed in ata_acpi_on_resume(). With this
change, invoking _GTF is safe on IDE hierarchy and acpi_sata check
before _GTF is removed.
ata_acpi_gtm() and ata_acpi_stm() implementation is taken from Alan
Cox's pata_acpi implementation. ata_acpi_gtm() is fixed such that the
result parameter is not shifted by sizeof(union acpi_object).
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/libata.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index 0c4f63b..8d3e391 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -198,6 +198,7 @@ enum { ATA_PFLAG_FLUSH_PORT_TASK = (1 << 16), /* flush port task */ ATA_PFLAG_SUSPENDED = (1 << 17), /* port is suspended (power) */ ATA_PFLAG_PM_PENDING = (1 << 18), /* PM operation pending */ + ATA_PFLAG_GTM_VALID = (1 << 19), /* acpi_gtm data valid */ /* struct ata_queued_cmd flags */ ATA_QCFLAG_ACTIVE = (1 << 0), /* cmd not yet ack'd to scsi lyer */ @@ -493,6 +494,17 @@ struct ata_eh_context { unsigned int did_probe_mask; }; +struct ata_acpi_drive +{ + u32 pio; + u32 dma; +} __packed; + +struct ata_acpi_gtm { + struct ata_acpi_drive drive[2]; + u32 flags; +} __packed; + struct ata_port { struct Scsi_Host *scsi_host; /* our co-allocated scsi host */ const struct ata_port_operations *ops; @@ -555,6 +567,7 @@ struct ata_port { #ifdef CONFIG_ATA_ACPI acpi_handle acpi_handle; + struct ata_acpi_gtm acpi_gtm; #endif u8 sector_buf[ATA_SECT_SIZE]; /* owned by EH */ }; |