sb_end_pagefault – drop write access to a superblock from a page fault Synopsis void sb_end_pagefault(struct super_block *sb); Arguments sb the super we wrote to Description Decrement number of processes handling write page fault to the filesystem. Wake up possible waiters wanting to freeze the filesystem. Copyright
sb_end_intwrite – drop write access to a superblock for internal fs purposes Synopsis void sb_end_intwrite(struct super_block *sb); Arguments sb the super we wrote to Description Decrement fs-internal number of writers to the filesystem. Wake up possible waiters wanting to freeze the filesystem. Copyright
sata_std_hardreset – COMRESET w/o waiting or classification Synopsis int sata_std_hardreset(struct ata_link *link, unsigned int *class, unsigned long deadline); Arguments link link to reset class resulting class of attached device deadline deadline jiffies for the operation Description Standard SATA COMRESET w/o waiting or classification. LOCKING: Kernel thread context (may sleep) Return 0 if link offline, -EAGAIN…
sata_set_spd_needed – is SATA spd configuration needed Synopsis int sata_set_spd_needed(struct ata_link *link); Arguments link Link in question Description Test whether the spd limit in SControl matches link->sata_spd_limit. This function is used to determine whether hardreset is necessary to apply SATA spd configuration. LOCKING: Inherited from caller. Return 1 if SATA spd configuration is needed, 0…
sata_set_spd – set SATA spd according to spd limit Synopsis int sata_set_spd(struct ata_link *link); Arguments link Link to set SATA spd for Description Set SATA spd of link according to sata_spd_limit. LOCKING: Inherited from caller. Return 0 if spd doesn’t need to be changed, 1 if spd has been changed. Negative errno if SCR registers…
sata_scr_write_flush – write SCR register of the specified port and flush Synopsis int sata_scr_write_flush(struct ata_link *link, int reg, u32 val); Arguments link ATA link to write SCR for reg SCR to write val value to write Description This function is identical to sata_scr_write except that this function performs flush after writing to the register. LOCKING:…
sata_scr_write – write SCR register of the specified port Synopsis int sata_scr_write(struct ata_link *link, int reg, u32 val); Arguments link ATA link to write SCR for reg SCR to write val value to write Description Write val to SCR register reg of link. This function is guaranteed to succeed if link is ap->link, the cable…
sata_scr_valid – test whether SCRs are accessible Synopsis int sata_scr_valid(struct ata_link *link); Arguments link ATA link to test SCR accessibility for Description Test whether SCRs are accessible for link. LOCKING: None. Return 1 if SCRs are accessible, 0 otherwise. Author Jeff Garzik Author. Copyright
sata_scr_read – read SCR register of the specified port Synopsis int sata_scr_read(struct ata_link *link, int reg, u32 *val); Arguments link ATA link to read SCR for reg SCR to read val Place to store read value Description Read SCR register reg of link into *val. This function is guaranteed to succeed if link is ap->link,…
sata_print_link_status – Print SATA link status Synopsis void sata_print_link_status(struct ata_link *link); Arguments link SATA link to printk link status about Description This function prints link speed and status of a SATA link. LOCKING: None. Author Jeff Garzik Author. Copyright
sata_lpm_ignore_phy_events – test if PHY event should be ignored Synopsis bool sata_lpm_ignore_phy_events(struct ata_link * link); Arguments link Link receiving the event Description Test whether the received PHY event has to be ignored or not. LOCKING: None: Return True if the event has to be ignored. Author Jeff Garzik Author. Copyright
sata_link_scr_lpm – manipulate SControl IPM and SPM fields Synopsis int sata_link_scr_lpm(struct ata_link *link, enum ata_lpm_policy policy, bool spm_wakeup); Arguments link ATA link to manipulate SControl for policy LPM policy to configure spm_wakeup initiate LPM transition to active state Description Manipulate the IPM field of the SControl register of link according to policy. If policy is…
sata_link_resume – resume SATA link Synopsis int sata_link_resume(struct ata_link *link, const unsigned long *params, unsigned long deadline); Arguments link ATA link to resume SATA params timing parameters { interval, duration, timeout } in msec deadline deadline jiffies for the operation Description Resume SATA phy link and debounce it. LOCKING: Kernel thread context (may sleep) Return…
sata_link_init_spd – Initialize link->sata_spd_limit Synopsis int sata_link_init_spd(struct ata_link *link); Arguments link Link to configure sata_spd_limit for Description Initialize link->[hw_]sata_spd_limit to the currently configured value. LOCKING: Kernel thread context (may sleep). Return 0 on success, -errno on failure. Author Jeff Garzik Author. Copyright
sata_link_hardreset – reset link via SATA phy reset Synopsis int sata_link_hardreset(struct ata_link *link, const unsigned long *timing, unsigned long deadline, bool *online, int (*check_ready)(struct ata_link *)); Arguments link link to reset timing timing parameters { interval, duration, timeout } in msec deadline deadline jiffies for the operation online optional out parameter indicating link onlineness check_ready…
sata_link_debounce – debounce SATA phy status Synopsis int sata_link_debounce(struct ata_link *link, const unsigned long *params, unsigned long deadline); Arguments link ATA link to debounce SATA phy status for params timing parameters { interval, duration, timeout } in msec deadline deadline jiffies for the operation Description Make sure SStatus of link reaches stable state, determined by…
sata_down_spd_limit – adjust SATA spd limit downward Synopsis int sata_down_spd_limit(struct ata_link *link, u32 spd_limit); Arguments link Link to adjust SATA spd limit for spd_limit Additional limit Description Adjust SATA spd limit of link downward. Note that this function only adjusts the limit. The change must be applied using sata_set_spd. If spd_limit is non-zero, the speed…
sas_tlr_supported – checking TLR bit in vpd 0x90 Synopsis unsigned int sas_tlr_supported(struct scsi_device *sdev); Arguments sdev scsi device struct Description Check Transport Layer Retries are supported or not. If vpd page 0x90 is present, TRL is supported. Authors James Bottomley <James.Bottomley [at] hansenpartnership.com> Author. Rob Landley <rob [at] landley.net> Author. Copyright
sas_rphy_unlink – unlink SAS remote PHY Synopsis void sas_rphy_unlink(struct sas_rphy *rphy); Arguments rphy SAS remote phy to unlink from its parent port Description Removes port reference to an rphy Authors James Bottomley <James.Bottomley [at] hansenpartnership.com> Author. Rob Landley <rob [at] landley.net> Author. Copyright
sas_rphy_remove – remove SAS remote PHY Synopsis void sas_rphy_remove(struct sas_rphy *rphy); Arguments rphy SAS remote phy to remove Description Removes the specified SAS remote PHY. Authors James Bottomley <James.Bottomley [at] hansenpartnership.com> Author. Rob Landley <rob [at] landley.net> Author. Copyright