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| author | Tejun Heo <htejun@gmail.com> | 2007-09-23 13:14:12 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-10-12 14:55:40 -0400 |
| commit | e0a7175263db4a226558883a51a88a5d2bc5d9fe (patch) | |
| tree | f9d23742df7f8a461ff63ad5be190f6a17742dd8 | |
| parent | 854c73a2f1c3bcc4aa88c25e208dc597e8efb795 (diff) | |
| download | kernel_samsung_crespo-e0a7175263db4a226558883a51a88a5d2bc5d9fe.zip kernel_samsung_crespo-e0a7175263db4a226558883a51a88a5d2bc5d9fe.tar.gz kernel_samsung_crespo-e0a7175263db4a226558883a51a88a5d2bc5d9fe.tar.bz2 | |
libata-pmp-prep: add PMP related constants, fields, ops and update helpers
Add PMP related constants, fields and ops. Also, update
ata_class_enabled/disabled() such that PMP classes are considered.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
| -rw-r--r-- | include/linux/libata.h | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index 3ab2196..c3820f1 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -155,7 +155,11 @@ enum { ATA_DEV_ATA_UNSUP = 2, /* ATA device (unsupported) */ ATA_DEV_ATAPI = 3, /* ATAPI device */ ATA_DEV_ATAPI_UNSUP = 4, /* ATAPI device (unsupported) */ - ATA_DEV_NONE = 5, /* no device */ + ATA_DEV_PMP = 5, /* SATA port multiplier */ + ATA_DEV_PMP_UNSUP = 6, /* SATA port multiplier (unsupported) */ + ATA_DEV_SEMB = 7, /* SEMB */ + ATA_DEV_SEMB_UNSUP = 8, /* SEMB (unsupported) */ + ATA_DEV_NONE = 9, /* no device */ /* struct ata_link flags */ ATA_LFLAG_HRST_TO_RESUME = (1 << 0), /* hardreset to resume link */ @@ -181,6 +185,7 @@ enum { ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ 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 */ /* The following flag belongs to ap->pflags but is kept in * ap->flags because it's referenced in many LLDs and will be @@ -299,6 +304,10 @@ enum { /* how hard are we gonna try to probe/recover devices */ ATA_PROBE_MAX_TRIES = 3, ATA_EH_DEV_TRIES = 3, + ATA_EH_PMP_TRIES = 5, + ATA_EH_PMP_LINK_TRIES = 3, + + SATA_PMP_SCR_TIMEOUT = 250, /* Horkage types. May be set by libata or controller on drives (some horkage may be drive/controller pair dependant */ @@ -450,7 +459,12 @@ struct ata_device { /* n_sector is used as CLEAR_OFFSET, read comment above CLEAR_OFFSET */ u64 n_sectors; /* size of device, if ATA */ unsigned int class; /* ATA_DEV_xxx */ - u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ + + union { + u16 id[ATA_ID_WORDS]; /* IDENTIFY xxx DEVICE data */ + u32 gscr[SATA_PMP_GSCR_DWORDS]; /* PMP GSCR block */ + }; + u8 pio_mode; u8 dma_mode; u8 xfer_mode; @@ -628,6 +642,12 @@ struct ata_port_operations { void (*qc_prep) (struct ata_queued_cmd *qc); unsigned int (*qc_issue) (struct ata_queued_cmd *qc); + /* port multiplier */ + void (*pmp_attach) (struct ata_port *ap); + void (*pmp_detach) (struct ata_port *ap); + int (*pmp_read) (struct ata_device *dev, int pmp, int reg, u32 *r_val); + int (*pmp_write) (struct ata_device *dev, int pmp, int reg, u32 val); + /* Error handlers. ->error_handler overrides ->eng_timeout and * indicates that new-style EH is in place. */ @@ -1033,12 +1053,14 @@ static inline unsigned int ata_tag_internal(unsigned int tag) */ static inline unsigned int ata_class_enabled(unsigned int class) { - return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI; + return class == ATA_DEV_ATA || class == ATA_DEV_ATAPI || + class == ATA_DEV_PMP || class == ATA_DEV_SEMB; } static inline unsigned int ata_class_disabled(unsigned int class) { - return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP; + return class == ATA_DEV_ATA_UNSUP || class == ATA_DEV_ATAPI_UNSUP || + class == ATA_DEV_PMP_UNSUP || class == ATA_DEV_SEMB_UNSUP; } static inline unsigned int ata_class_absent(unsigned int class) |