The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
atapi_check_dma – Check whether ATAPI DMA can be supported Synopsis int atapi_check_dma(struct ata_queued_cmd *qc); Arguments qc Metadata associated with taskfile to check Description Allow low-level driver to filter ATA PACKET commands, returning a status indicating whether or not it is OK to use DMA for the supplied PACKET command. LOCKING: spin_lock_irqsave(host lock) Return 0 when…
ata_xfer_mode2shift – Find matching xfer_shift for XFER_* Synopsis int ata_xfer_mode2shift(unsigned long xfer_mode); Arguments xfer_mode XFER_* of interest Description Return matching xfer_shift for xfer_mode. LOCKING: None. Return Matching xfer_shift, -1 if no match found. Author Jeff Garzik Author. Copyright
ata_xfer_mode2mask – Find matching xfer_mask for XFER_* Synopsis unsigned long ata_xfer_mode2mask(u8 xfer_mode); Arguments xfer_mode XFER_* of interest Description Return matching xfer_mask for xfer_mode. LOCKING: None. Return Matching xfer_mask, 0 if no match found. Author Jeff Garzik Author. Copyright
ata_xfer_mask2mode – Find matching XFER_* for the given xfer_mask Synopsis u8 ata_xfer_mask2mode(unsigned long xfer_mask); Arguments xfer_mask xfer_mask of interest Description Return matching XFER_* value for xfer_mask. Only the highest bit of xfer_mask is considered. LOCKING: None. Return Matching XFER_* value, 0xff if no match found. Author Jeff Garzik Author. Copyright
ata_wait_register – wait until register value changes Synopsis u32 ata_wait_register(struct ata_port * ap, void __iomem * reg, u32 mask, u32 val, unsigned long interval, unsigned long timeout); Arguments ap ATA port to wait register for, can be NULL reg IO-mapped register mask Mask to apply to read register value val Wait condition interval polling interval in milliseconds timeout timeout in milliseconds Description Waiting for…
ata_wait_ready – wait for link to become ready Synopsis int ata_wait_ready(struct ata_link *link, unsigned long deadline, int (*check_ready)(struct ata_link *link)); Arguments link link to be waited on deadline deadline jiffies for the operation check_ready callback to check link readiness Description Wait for link to become ready. check_ready should return positive number if link is ready,…
ata_wait_after_reset – wait for link to become ready after reset Synopsis int ata_wait_after_reset(struct ata_link *link, unsigned long deadline, int (*check_ready)(struct ata_link *link)); Arguments link link to be waited on deadline deadline jiffies for the operation check_ready callback to check link readiness Description Wait for link to become ready after reset. LOCKING: EH context. Return 0…
ata_unpack_xfermask – Unpack xfer_mask into pio, mwdma and udma masks Synopsis void ata_unpack_xfermask(unsigned long xfer_mask, unsigned long *pio_mask, unsigned long *mwdma_mask, unsigned long *udma_mask); Arguments xfer_mask xfer_mask to unpack pio_mask resulting pio_mask mwdma_mask resulting mwdma_mask udma_mask resulting udma_mask Description Unpack xfer_mask into pio_mask, mwdma_mask and udma_mask. Any NULL destination masks will be ignored. Author Jeff…
ata_to_sense_error – convert ATA error to SCSI error Synopsis void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, u8 *asc, u8 *ascq, int verbose); Arguments id ATA device number drv_stat value contained in ATA status register drv_err value contained in ATA error register sk the sense key we’ll fill out asc the additional sense code…
ata_timing_cycle2mode – find xfer mode for the specified cycle duration Synopsis u8 ata_timing_cycle2mode(unsigned int xfer_shift, int cycle); Arguments xfer_shift ATA_SHIFT_* value for transfer type to examine. cycle cycle duration in ns Description Return matching xfer mode for cycle. The returned mode is of the transfer type specified by xfer_shift. If cycle is too slow for xfer_shift, 0xff…
ata_tf_to_fis – Convert ATA taskfile to SATA FIS structure Synopsis void ata_tf_to_fis(const struct ata_taskfile *tf, u8 pmp, int is_cmd, u8 *fis); Arguments tf Taskfile to convert pmp Port multiplier port is_cmd This FIS is for command fis Buffer into which data will output Description Converts a standard ATA taskfile to a Serial ATA FIS structure…
ata_tf_read_block – Read block address from ATA taskfile Synopsis u64 ata_tf_read_block(const struct ata_taskfile * tf, struct ata_device * dev); Arguments tf ATA taskfile of interest dev ATA device tf belongs to Description LOCKING: None. Read block address from tf. This function can handle all three address formats – LBA, LBA48 and CHS. tf->protocol and flags select the address format…
ata_tf_from_fis – Convert SATA FIS to ATA taskfile Synopsis void ata_tf_from_fis(const u8 *fis, struct ata_taskfile *tf); Arguments fis Buffer from which data will be input tf Taskfile to output Description Converts a serial ATA FIS structure to a standard ATA taskfile. LOCKING: Inherited from caller. Author Jeff Garzik Author. Copyright
ata_task_ioctl – Handler for HDIO_DRIVE_TASK ioctl Synopsis int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg); Arguments scsidev Device to which we are issuing command arg User provided data for issuing command Description LOCKING: Defined by the SCSI layer. We don’t really care. Return Zero on success, negative errno on error. Author Jeff Garzik Author. Copyright
ata_std_qc_defer – Check whether a qc needs to be deferred Synopsis int ata_std_qc_defer(struct ata_queued_cmd *qc); Arguments qc ATA command in question Description Non-NCQ commands cannot run with any other command, NCQ or not. As upper layer only knows the queue depth, we are responsible for maintaining exclusion. This function checks whether a new command qc…
ata_std_prereset – prepare for reset Synopsis int ata_std_prereset(struct ata_link *link, unsigned long deadline); Arguments link ATA link to be reset deadline deadline jiffies for the operation Description link is about to be reset. Initialize it. Failure from prereset makes libata abort whole reset sequence and give up that port, so prereset should be best-effort. It…
ata_std_postreset – standard postreset callback Synopsis void ata_std_postreset(struct ata_link *link, unsigned int *classes); Arguments link the target ata_link classes classes of attached devices Description This function is invoked after a successful reset. Note that the device might have been reset more than once using different reset methods before postreset is invoked. LOCKING: Kernel thread context…
ata_std_bios_param – generic bios head/sector/cylinder calculator used by sd. Synopsis int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]); Arguments sdev SCSI device for which BIOS geometry is to be determined bdev block device associated with sdev capacity capacity of SCSI device geom[] location to which geometry will be output Description Generic bios…
ata_slave_link_init – initialize slave link Synopsis int ata_slave_link_init(struct ata_port *ap); Arguments ap port to initialize slave link for Description Create and initialize slave link for ap. This enables slave link handling on the port. In libata, a port contains links and a link contains devices. There is single host link but if a PMP is…
ata_sg_setup – DMA-map the scatter-gather table associated with a command. Synopsis int ata_sg_setup(struct ata_queued_cmd *qc); Arguments qc Command with scatter-gather table to be mapped. Description DMA-map the scatter-gather table associated with queued_cmd qc. LOCKING: spin_lock_irqsave(host lock) Return Zero on success, negative on error. Author Jeff Garzik Author. Copyright