ata_link_init – Initialize an ata_link structure Synopsis void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp); Arguments ap ATA port link is attached to link Link structure to initialize pmp Port multiplier port number Description Initialize link. LOCKING: Kernel thread context (may sleep) Author Jeff Garzik Author. Copyright
ata_is_40wire – check drive side detection Synopsis int ata_is_40wire(struct ata_device *dev); Arguments dev device Description Perform drive side detection decoding, allowing for device vendors who can’t follow the documentation. Author Jeff Garzik Author. Copyright
ata_id_xfermask – Compute xfermask from the given IDENTIFY data Synopsis unsigned long ata_id_xfermask(const u16 *id); Arguments id IDENTIFY data to compute xfer mask from Description Compute the xfermask for this device. This is not as trivial as it seems if we must consider early devices correctly. FIXME: pre IDE drive timing (do we care ?)….
ata_id_string – Convert IDENTIFY DEVICE page into string Synopsis void ata_id_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); Arguments id IDENTIFY DEVICE results we will examine s string into which data is output ofs offset into identify device page len length of string to return. must be an even number. Description…
ata_id_c_string – Convert IDENTIFY DEVICE page into C string Synopsis void ata_id_c_string(const u16 *id, unsigned char *s, unsigned int ofs, unsigned int len); Arguments id IDENTIFY DEVICE results we will examine s string into which data is output ofs offset into identify device page len length of string to return. must be an odd number….
ata_hpa_resize – Resize a device with an HPA set Synopsis int ata_hpa_resize(struct ata_device *dev); Arguments dev Device to resize Description Read the size of an LBA28 or LBA48 disk with HPA features and resize it if required to the full size of the media. The caller must check the drive has the HPA feature set…
ata_host_suspend – suspend host Synopsis int ata_host_suspend(struct ata_host *host, pm_message_t mesg); Arguments host host to suspend mesg PM message Description Suspend host. Actual operation is performed by port suspend. Author Jeff Garzik Author. Copyright
ata_host_start – start and freeze ports of an ATA host Synopsis int ata_host_start(struct ata_host *host); Arguments host ATA host to start ports for Description Start and then freeze ports of host. Started status is recorded in host->flags, so this function can be called multiple times. Ports are guaranteed to get started only once. If host->ops…
ata_host_resume – resume host Synopsis void ata_host_resume(struct ata_host *host); Arguments host host to resume Description Resume host. Actual operation is performed by port resume. Author Jeff Garzik Author. Copyright
ata_host_register – register initialized ATA host Synopsis int ata_host_register(struct ata_host *host, struct scsi_host_template *sht); Arguments host ATA host to register sht template for SCSI host Description Register initialized ATA host. host is allocated using ata_host_alloc and fully initialized by LLD. This function starts ports, registers host with ATA and SCSI layers and probe registered devices….
ata_host_init – Initialize a host struct for sas (ipr, libsas) Synopsis void ata_host_init(struct ata_host *host, struct device *dev, struct ata_port_operations *ops); Arguments host host to initialize dev device host is attached to ops port_ops Author Jeff Garzik Author. Copyright
ata_host_detach – Detach all ports of an ATA host Synopsis void ata_host_detach(struct ata_host *host); Arguments host Host to detach Description Detach all ports of host. LOCKING: Kernel thread context (may sleep). Author Jeff Garzik Author. Copyright
ata_host_alloc_pinfo – alloc host and init with port_info array Synopsis struct ata_host *ata_host_alloc_pinfo(struct device *dev, const struct ata_port_info *const *ppi, int n_ports); Arguments dev generic device this host is associated with ppi array of ATA port_info to initialize host with n_ports number of ATA ports attached to this host Description Allocate ATA host and initialize…
ata_host_alloc – allocate and init basic ATA host resources Synopsis struct ata_host *ata_host_alloc(struct device *dev, int max_ports); Arguments dev generic device this host is associated with max_ports maximum number of ATA ports associated with this host Description Allocate and initialize basic ATA host resources. LLD calls this function to allocate a host, initializes it fully…
ata_host_activate – start host, request IRQ and register it Synopsis int ata_host_activate(struct ata_host *host, int irq, irq_handler_t irq_handler, unsigned long irq_flags, struct scsi_host_template *sht); Arguments host target ATA host irq IRQ to request irq_handler irq_handler used when requesting IRQ irq_flags irq_flags used when requesting IRQ sht scsi_host_template to use when registering the host Description After…
ata_get_xlat_func – check if SCSI to ATA translation is possible Synopsis ata_xlat_func_t ata_get_xlat_func(struct ata_device * dev, u8 cmd); Arguments dev ATA device cmd SCSI command opcode to consider Description Look up the SCSI command given, and determine whether the SCSI command is to be translated or simulated. Return Pointer to translation function if possible, NULL if not. Author…
ata_get_identity – Handler for HDIO_GET_IDENTITY ioctl Synopsis int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, void __user *arg); Arguments ap target port sdev SCSI device to get identify data for arg User buffer area for identify data Description LOCKING: Defined by the SCSI layer. We don’t really care. Return Zero on success, negative errno on error….
ata_gen_ata_sense – generate a SCSI fixed sense block Synopsis void ata_gen_ata_sense(struct ata_queued_cmd *qc); Arguments qc Command that we are erroring out Description Generate sense block for a failed ATA command qc. Descriptor format is used to accommodate LBA48 block address. LOCKING: None. Author Jeff Garzik Author. Copyright
ata_format_sct_write_same – SATL Write Same to ATA SCT Write Same Synopsis size_t ata_format_sct_write_same(struct scsi_cmnd *cmd, u64 lba, u64 num); Arguments cmd SCSI command being translated lba Starting sector num Number of sectors to be zero’d. Description Rewrite the WRITE SAME payload to be an SCT Write Same formatted descriptor. Note Writes a pattern (0’s) in…
ata_format_dsm_trim_descr – SATL Write Same to DSM Trim Synopsis size_t ata_format_dsm_trim_descr(struct scsi_cmnd *cmd, u32 trmax, u64 sector, u32 count); Arguments cmd SCSI command being translated trmax Maximum number of entries that will fit in sector_size bytes. sector Starting sector count Total Range of request in logical sectors Description Rewrite the WRITE SAME descriptor to be…