ata_force_xfermask – force xfermask according to libata.force Synopsis void ata_force_xfermask(struct ata_device *dev); Arguments dev ATA device of interest Description Force xfer_mask according to libata.force and whine about it. For consistency with link selection, device number 15 selects the first device connected to the host link. LOCKING: EH context. Author Jeff Garzik Author. Copyright
ata_force_link_limits – force link limits according to libata.force Synopsis void ata_force_link_limits(struct ata_link *link); Arguments link ATA link of interest Description Force link flags and SATA spd limit according to libata.force and whine about it. When only the port part is specified (e.g. 1:), the limit applies to all links connected to both the host link…
ata_force_horkage – force horkage according to libata.force Synopsis void ata_force_horkage(struct ata_device *dev); Arguments dev ATA device of interest Description Force horkage according to libata.force and whine about it. For consistency with link selection, device number 15 selects the first device connected to the host link. LOCKING: EH context. Author Jeff Garzik Author. Copyright
ata_force_cbl – force cable type according to libata.force Synopsis void ata_force_cbl(struct ata_port *ap); Arguments ap ATA port of interest Description Force cable type according to libata.force and whine about it. The last entry which has matching port number is used, so it can be specified as part of device force parameters. For example, both “a:40c,1.00:udma4”…
ata_finalize_port_ops – finalize ata_port_operations Synopsis void ata_finalize_port_ops(struct ata_port_operations *ops); Arguments ops ata_port_operations to finalize Description An ata_port_operations can inherit from another ops and that ops can again inherit from another. This can go on as many times as necessary as long as there is no loop in the inheritance chain. Ops tables are finalized when…
ata_exec_internal_sg – execute libata internal command Synopsis unsigned ata_exec_internal_sg(struct ata_device *dev, struct ata_taskfile *tf, const u8 *cdb, int dma_dir, struct scatterlist *sgl, unsigned int n_elem, unsigned long timeout); Arguments dev Device to which the command is sent tf Taskfile registers for the command and the result cdb CDB for packet command dma_dir Data transfer direction…
ata_exec_internal – execute libata internal command Synopsis unsigned ata_exec_internal(struct ata_device *dev, struct ata_taskfile *tf, const u8 *cdb, int dma_dir, void *buf, unsigned int buflen, unsigned long timeout); Arguments dev Device to which the command is sent tf Taskfile registers for the command and the result cdb CDB for packet command dma_dir Data transfer direction of…
ata_dump_status – user friendly display of error info Synopsis void ata_dump_status(unsigned id, struct ata_taskfile *tf); Arguments id id of the port in question tf ptr to filled out taskfile Description Decode and dump the ATA error/status registers for the user so that they have some idea what really happened at the non make-believe layer. LOCKING:…
ata_dump_id – IDENTIFY DEVICE info debugging output Synopsis void ata_dump_id(const u16 *id); Arguments id IDENTIFY DEVICE page to dump Description Dump selected 16-bit words from the given IDENTIFY DEVICE page. LOCKING: caller. Author Jeff Garzik Author. Copyright
ata_down_xfermask_limit – adjust dev xfer masks downward Synopsis int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel); Arguments dev Device to adjust xfer masks sel ATA_DNXFER_* selector Description Adjust xfer masks of dev downward. Note that this function does not apply the change. Invoking ata_set_mode afterwards will apply the limit. LOCKING: Inherited from caller. Return 0 on…
ata_do_set_mode – Program timings and issue SET FEATURES – XFER Synopsis int ata_do_set_mode(struct ata_link *link, struct ata_device **r_failed_dev); Arguments link link on which timings will be programmed r_failed_dev out parameter for failed device Description Standard implementation of the function used to tune and set ATA device disk transfer mode (PIO3, UDMA6, etc.). If ata_dev_set_mode fails,…
ata_do_dev_read_id – default ID read method Synopsis unsigned int ata_do_dev_read_id(struct ata_device *dev, struct ata_taskfile *tf, u16 *id); Arguments dev device tf proposed taskfile id data buffer Description Issue the identify taskfile and hand back the buffer containing identify data. For some RAID controllers and for pre ATA devices this function is wrapped or replaced by…
ata_dev_xfermask – Compute supported xfermask of the given device Synopsis void ata_dev_xfermask(struct ata_device *dev); Arguments dev Device to compute xfermask for Description Compute supported xfermask of dev and store it in dev->*_mask. This function is responsible for applying all known limits including host controller limits, device blacklist, etc… LOCKING: None. Author Jeff Garzik Author. Copyright
ata_dev_set_xfermode – Issue SET FEATURES – XFER MODE command Synopsis unsigned int ata_dev_set_xfermode(struct ata_device *dev); Arguments dev Device to which command will be sent Description Issue SET FEATURES – XFER MODE command to device dev on port ap. LOCKING: PCI/etc. bus probe sem. Return 0 on success, AC_ERR_* mask otherwise. Author Jeff Garzik Author. Copyright
ata_dev_set_feature – Issue SET FEATURES – SATA FEATURES Synopsis unsigned int ata_dev_set_feature(struct ata_device *dev, u8 enable, u8 feature); Arguments dev Device to which command will be sent enable Whether to enable or disable the feature feature The sector count represents the feature to set Description Issue SET FEATURES – SATA FEATURES command to device dev…
ata_dev_same_device – Determine whether new ID matches configured device Synopsis int ata_dev_same_device(struct ata_device *dev, unsigned int new_class, const u16 *new_id); Arguments dev device to compare against new_class class of the new device new_id IDENTIFY page of the new device Description Compare new_class and new_id against dev and determine whether dev is the device indicated by…
ata_dev_revalidate – Revalidate ATA device Synopsis int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class, unsigned int readid_flags); Arguments dev device to revalidate new_class new class code readid_flags read ID flags Description Re-read IDENTIFY page, make sure dev is still attached to the port and reconfigure it according to the new IDENTIFY page. LOCKING: Kernel thread context…
ata_dev_reread_id – Re-read IDENTIFY data Synopsis int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags); Arguments dev target ATA device readid_flags read ID flags Description Re-read IDENTIFY page and make sure dev is still attached to the port. LOCKING: Kernel thread context (may sleep) Return 0 on success, negative errno otherwise Author Jeff Garzik Author. Copyright
ata_dev_read_id – Read ID data from the specified device Synopsis int ata_dev_read_id(struct ata_device *dev, unsigned int *p_class, unsigned int flags, u16 *id); Arguments dev target device p_class pointer to class of the target device (may be changed) flags ATA_READID_* flags id buffer to read IDENTIFY data into Description Read ID data from the specified device….
ata_dev_phys_link – find physical link for a device Synopsis struct ata_link *ata_dev_phys_link(struct ata_device *dev); Arguments dev ATA device to look up physical link for Description Look up physical link which dev is attached to. Note that this is different from dev->link only when dev is on slave link. For all other cases, it’s the same…