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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-29 12:12:34 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-29 12:12:34 -0700 |
commit | 3529a233421fc43fa7bfdf7a4317daf28348a23d (patch) | |
tree | 520558ffb70e4f4743495ad7a62d4c775c0c1ea3 /include/linux | |
parent | 00cda56d39f013cce60f44f1e3da19b87eba5d85 (diff) | |
parent | 31556594f913fa81d008cecfe46d7211c919a853 (diff) | |
download | kernel_samsung_smdk4412-3529a233421fc43fa7bfdf7a4317daf28348a23d.zip kernel_samsung_smdk4412-3529a233421fc43fa7bfdf7a4317daf28348a23d.tar.gz kernel_samsung_smdk4412-3529a233421fc43fa7bfdf7a4317daf28348a23d.tar.bz2 |
Merge branch 'alpm' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'alpm' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
[libata] AHCI: add hw link power management support
[libata] Link power management infrastructure
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/ata.h | 21 | ||||
-rw-r--r-- | include/linux/libata.h | 21 |
2 files changed, 41 insertions, 1 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h index e21c002..128dc7a 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -236,6 +236,7 @@ enum { /* SETFEATURE Sector counts for SATA features */ SATA_AN = 0x05, /* Asynchronous Notification */ + SATA_DIPM = 0x03, /* Device Initiated Power Management */ /* ATAPI stuff */ ATAPI_PKT_DMA = (1 << 0), @@ -378,6 +379,26 @@ struct ata_taskfile { #define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20) +static inline bool ata_id_has_hipm(const u16 *id) +{ + u16 val = id[76]; + + if (val == 0 || val == 0xffff) + return false; + + return val & (1 << 9); +} + +static inline bool ata_id_has_dipm(const u16 *id) +{ + u16 val = id[78]; + + if (val == 0 || val == 0xffff) + return false; + + return val & (1 << 3); +} + static inline int ata_id_has_fua(const u16 *id) { if ((id[84] & 0xC000) != 0x4000) diff --git a/include/linux/libata.h b/include/linux/libata.h index 439d40f..147ccc4 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -133,6 +133,8 @@ enum { ATA_DFLAG_ACPI_PENDING = (1 << 5), /* ACPI resume action pending */ ATA_DFLAG_ACPI_FAILED = (1 << 6), /* ACPI on devcfg has failed */ ATA_DFLAG_AN = (1 << 7), /* AN configured */ + ATA_DFLAG_HIPM = (1 << 8), /* device supports HIPM */ + ATA_DFLAG_DIPM = (1 << 9), /* device supports DIPM */ ATA_DFLAG_CFG_MASK = (1 << 12) - 1, ATA_DFLAG_PIO = (1 << 12), /* device limited to PIO mode */ @@ -186,6 +188,7 @@ enum { ATA_FLAG_ACPI_SATA = (1 << 17), /* need native SATA ACPI layout */ ATA_FLAG_AN = (1 << 18), /* controller supports AN */ ATA_FLAG_PMP = (1 << 19), /* controller supports PMP */ + ATA_FLAG_IPM = (1 << 20), /* driver can handle IPM */ /* The following flag belongs to ap->pflags but is kept in * ap->flags because it's referenced in many LLDs and will be @@ -302,6 +305,7 @@ enum { ATA_EHI_RESUME_LINK = (1 << 1), /* resume link (reset modifier) */ ATA_EHI_NO_AUTOPSY = (1 << 2), /* no autopsy */ ATA_EHI_QUIET = (1 << 3), /* be quiet */ + ATA_EHI_LPM = (1 << 4), /* link power management action */ ATA_EHI_DID_SOFTRESET = (1 << 16), /* already soft-reset this port */ ATA_EHI_DID_HARDRESET = (1 << 17), /* already soft-reset this port */ @@ -333,6 +337,7 @@ enum { ATA_HORKAGE_BROKEN_HPA = (1 << 4), /* Broken HPA */ ATA_HORKAGE_SKIP_PM = (1 << 5), /* Skip PM operations */ ATA_HORKAGE_HPA_SIZE = (1 << 6), /* native size off by one */ + ATA_HORKAGE_IPM = (1 << 7), /* Link PM problems */ /* DMA mask for user DMA control: User visible values; DO NOT renumber */ @@ -378,6 +383,18 @@ typedef int (*ata_reset_fn_t)(struct ata_link *link, unsigned int *classes, unsigned long deadline); typedef void (*ata_postreset_fn_t)(struct ata_link *link, unsigned int *classes); +/* + * host pm policy: If you alter this, you also need to alter libata-scsi.c + * (for the ascii descriptions) + */ +enum link_pm { + NOT_AVAILABLE, + MIN_POWER, + MAX_PERFORMANCE, + MEDIUM_POWER, +}; +extern struct class_device_attribute class_device_attr_link_power_management_policy; + struct ata_ioports { void __iomem *cmd_addr; void __iomem *data_addr; @@ -624,6 +641,7 @@ struct ata_port { pm_message_t pm_mesg; int *pm_result; + enum link_pm pm_policy; struct timer_list fastdrain_timer; unsigned long fastdrain_cnt; @@ -691,7 +709,8 @@ struct ata_port_operations { int (*port_suspend) (struct ata_port *ap, pm_message_t mesg); int (*port_resume) (struct ata_port *ap); - + int (*enable_pm) (struct ata_port *ap, enum link_pm policy); + void (*disable_pm) (struct ata_port *ap); int (*port_start) (struct ata_port *ap); void (*port_stop) (struct ata_port *ap); |