ata_tf_load — send taskfile registers to host controller
void ata_tf_load (struct ata_port * ap, const struct ata_taskfile * tf);
Outputs ATA taskfile to standard ATA host controller using MMIO or PIO as indicated by the ATA_FLAG_MMIO flag. Writes the control, feature, nsect, lbal, lbam, and lbah registers. Optionally (ATA_TFLAG_LBA48) writes hob_feature, hob_nsect, hob_lbal, hob_lbam, and hob_lbah.
This function waits for idle (!BUSY and !DRQ) after writing registers. If the control register has a new value, this function also waits for idle after writing control and before writing the remaining registers.
May be used as the tf_load entry in ata_port_operations.