ata_dev_pair – return other device on cable Synopsis struct ata_device *ata_dev_pair(struct ata_device *adev); Arguments adev device Description Obtain the other device on the same cable, or if none is present NULL is returned Author Jeff Garzik Author. Copyright
ata_dev_next – device iteration helper Synopsis struct ata_device *ata_dev_next(struct ata_device *dev, struct ata_link *link, enum ata_dev_iter_mode mode); Arguments dev the previous device, NULL to start link ATA link containing devices to iterate mode iteration mode, one of ATA_DITER_* Description LOCKING: Host lock or EH context. Return Pointer to the next device. Author Jeff Garzik Author….
ata_dev_init_params – Issue INIT DEV PARAMS command Synopsis unsigned int ata_dev_init_params(struct ata_device *dev, u16 heads, u16 sectors); Arguments dev Device to which command will be sent heads Number of heads (taskfile parameter) sectors Number of sectors (taskfile parameter) Description LOCKING: Kernel thread context (may sleep) Return 0 on success, AC_ERR_* mask otherwise. Author Jeff Garzik…
ata_dev_init – Initialize an ata_device structure Synopsis void ata_dev_init(struct ata_device *dev); Arguments dev Device structure to initialize Description Initialize dev in preparation for probing. LOCKING: Inherited from caller. Author Jeff Garzik Author. Copyright
ata_dev_configure – Configure the specified ATA/ATAPI device Synopsis int ata_dev_configure(struct ata_device *dev); Arguments dev Target device to configure Description Configure dev according to dev->id. Generic and low-level driver specific fixups are also applied. LOCKING: Kernel thread context (may sleep) Return 0 on success, -errno otherwise Author Jeff Garzik Author. Copyright
ata_dev_classify – determine device type based on ATA-spec signature Synopsis unsigned int ata_dev_classify(const struct ata_taskfile *tf); Arguments tf ATA taskfile register set for device to be identified Description Determine from taskfile register contents whether a device is ATA or ATAPI, as per “Signature and persistence” section of ATA/PI spec (volume 1, sect 5.14). LOCKING: None….
ata_cmd_ioctl – Handler for HDIO_DRIVE_CMD ioctl Synopsis int ata_cmd_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_cable_unknown – return unknown PATA cable. Synopsis int ata_cable_unknown(struct ata_port *ap); Arguments ap port Description Helper method for drivers which have no PATA cable detection. Author Jeff Garzik Author. Copyright
ata_cable_sata – return SATA cable type Synopsis int ata_cable_sata(struct ata_port *ap); Arguments ap port Description Helper method for drivers which have SATA cables Author Jeff Garzik Author. Copyright
ata_cable_ignore – return ignored PATA cable. Synopsis int ata_cable_ignore(struct ata_port *ap); Arguments ap port Description Helper method for drivers which don’t use cable type to limit transfer mode. Author Jeff Garzik Author. Copyright
ata_cable_80wire – return 80 wire cable type Synopsis int ata_cable_80wire(struct ata_port *ap); Arguments ap port Description Helper method for drivers which want to hardwire 80 wire cable detection. Author Jeff Garzik Author. Copyright
ata_cable_40wire – return 40 wire cable type Synopsis int ata_cable_40wire(struct ata_port *ap); Arguments ap port Description Helper method for drivers which want to hardwire 40 wire cable detection. Author Jeff Garzik Author. Copyright
ata_bus_probe – Reset and probe ATA bus Synopsis int ata_bus_probe(struct ata_port *ap); Arguments ap Bus to probe Description Master ATA bus probing function. Initiates a hardware-dependent bus reset, then attempts to identify any devices found on the bus. LOCKING: PCI/etc. bus probe sem. Return Zero on success, negative errno otherwise. Author Jeff Garzik Author. Copyright
ata_build_rw_tf – Build ATA taskfile for given read/write request Synopsis int ata_build_rw_tf(struct ata_taskfile *tf, struct ata_device *dev, u64 block, u32 n_block, unsigned int tf_flags, unsigned int tag); Arguments tf Target ATA taskfile dev ATA device tf belongs to block Block address n_block Number of blocks tf_flags RW/FUA etc… tag tag Description LOCKING: None. Build ATA…
arch_phys_wc_add – add a WC MTRR and handle errors if PAT is unavailable Synopsis int arch_phys_wc_add(unsigned long base, unsigned long size); Arguments base Physical base address size Size of region Description If PAT is available, this does nothing. If PAT is unavailable, it attempts to add a WC MTRR covering size bytes starting at base…
allocate_resource – allocate empty slot in the resource tree given range & alignment. The resource will be reallocated with a new size if it was already allocated Synopsis int allocate_resource(struct resource *root, struct resource *new, resource_size_t size, resource_size_t min, resource_size_t max, resource_size_t align, resource_size_t (*alignf)(void *, const struct resource *, resource_size_t, resource_size_t), void *alignf_data); Arguments…
alloc_vm_area – allocate a range of kernel address space Synopsis struct vm_struct *alloc_vm_area(size_t size, pte_t **ptes); Arguments size size of the area ptes returns the PTEs for the address space Return NULL on failure, vm_struct on success This function reserves a range of kernel address space, and allocates pagetables to map that range. No actual…
alloc_skb_with_frags – allocate skb with page frags Synopsis struct sk_buff *alloc_skb_with_frags(unsigned long header_len, unsigned long data_len, int max_page_order, int *errcode, gfp_t gfp_mask); Arguments header_len size of linear part data_len needed length in frags max_page_order max page order desired. errcode pointer to error code if any gfp_mask allocation mask Description This can be used to allocate…
alloc_pages_exact_nid – allocate an exact number of physically-contiguous pages on a node. Synopsis void *alloc_pages_exact_nid(int nid, size_t size, gfp_t gfp_mask); Arguments nid the preferred node ID where memory should be allocated size the number of bytes to allocate gfp_mask GFP flags for the allocation Description Like alloc_pages_exact, but try to allocate on node nid first…
alloc_netdev_mqs – allocate network device Synopsis struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name, unsigned char name_assign_type, void (*setup)(struct net_device *), unsigned int txqs, unsigned int rxqs); Arguments sizeof_priv size of private data to allocate space for name device name format string name_assign_type origin of device name setup callback to initialize device txqs the number of…