diff options
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 2 | ||||
| -rw-r--r-- | drivers/ata/libata-core.c | 38 |
2 files changed, 40 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index fb8752b42ec8..aa7447f8837c 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3116,6 +3116,8 @@ * max_sec_lba48: Set or clear transfer size limit to 65535 sectors. + * external: Mark port as external (hotplug-capable). + * [no]lpm: Enable or disable link power management. * [no]setxfer: Indicate if transfer speed mode setting diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 63ec2f218431..9c4a21e5a8bb 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -88,6 +88,7 @@ struct ata_force_param { unsigned int xfer_mask; unsigned int quirk_on; unsigned int quirk_off; + unsigned int pflags_on; u16 lflags_on; u16 lflags_off; }; @@ -332,6 +333,35 @@ void ata_force_cbl(struct ata_port *ap) } /** + * ata_force_pflags - force port flags according to libata.force + * @ap: ATA port of interest + * + * Force port flags according to libata.force and whine about it. + * + * LOCKING: + * EH context. + */ +static void ata_force_pflags(struct ata_port *ap) +{ + int i; + + for (i = ata_force_tbl_size - 1; i >= 0; i--) { + const struct ata_force_ent *fe = &ata_force_tbl[i]; + + if (fe->port != -1 && fe->port != ap->print_id) + continue; + + /* let pflags stack */ + if (fe->param.pflags_on) { + ap->pflags |= fe->param.pflags_on; + ata_port_notice(ap, + "FORCE: port flag 0x%x forced -> 0x%x\n", + fe->param.pflags_on, ap->pflags); + } + } +} + +/** * ata_force_link_limits - force link limits according to libata.force * @link: ATA link of interest * @@ -486,6 +516,7 @@ static void ata_force_quirks(struct ata_device *dev) } } #else +static inline void ata_force_pflags(struct ata_port *ap) { } static inline void ata_force_link_limits(struct ata_link *link) { } static inline void ata_force_xfermask(struct ata_device *dev) { } static inline void ata_force_quirks(struct ata_device *dev) { } @@ -5456,6 +5487,8 @@ struct ata_port *ata_port_alloc(struct ata_host *host) #endif ata_sff_port_init(ap); + ata_force_pflags(ap); + return ap; } EXPORT_SYMBOL_GPL(ata_port_alloc); @@ -6268,6 +6301,9 @@ EXPORT_SYMBOL_GPL(ata_platform_remove_one); { "no" #name, .lflags_on = (flags) }, \ { #name, .lflags_off = (flags) } +#define force_pflag_on(name, flags) \ + { #name, .pflags_on = (flags) } + #define force_quirk_on(name, flag) \ { #name, .quirk_on = (flag) } @@ -6327,6 +6363,8 @@ static const struct ata_force_param force_tbl[] __initconst = { force_lflag_on(rstonce, ATA_LFLAG_RST_ONCE), force_lflag_onoff(dbdelay, ATA_LFLAG_NO_DEBOUNCE_DELAY), + force_pflag_on(external, ATA_PFLAG_EXTERNAL), + force_quirk_onoff(ncq, ATA_QUIRK_NONCQ), force_quirk_onoff(ncqtrim, ATA_QUIRK_NO_NCQ_TRIM), force_quirk_onoff(ncqati, ATA_QUIRK_NO_NCQ_ON_ATI), |