+ switch (cmd) {
+ case FDEJECT:
+ if (UDRS->fd_ref != 1)
+ /* somebody else has this drive open */
+ return -EBUSY;
+ if (lock_fdc(drive, true))
+ return -EINTR;
+
+ /* do the actual eject. Fails on
+ * non-Sparc architectures */
+ ret = fd_eject(UNIT(drive));
+
+ set_bit(FD_DISK_CHANGED_BIT, &UDRS->flags);
+ set_bit(FD_VERIFY_BIT, &UDRS->flags);
+ process_fd_request();
+ return ret;
+ case FDCLRPRM:
+ if (lock_fdc(drive, true))
+ return -EINTR;
+ current_type[drive] = NULL;
+ floppy_sizes[drive] = MAX_DISK_SIZE << 1;
+ UDRS->keep_data = 0;
+ return invalidate_drive(bdev);
+ case FDSETPRM:
+ case FDDEFPRM:
+ return set_geometry(cmd, &inparam.g, drive, type, bdev);
+ case FDGETPRM:
+ ret = get_floppy_geometry(drive, type,
+ (struct floppy_struct **)
+ &outparam);
+ if (ret)
+ return ret;
+ break;
+ case FDMSGON:
+ UDP->flags |= FTD_MSG;
+ return 0;
+ case FDMSGOFF:
+ UDP->flags &= ~FTD_MSG;
+ return 0;
+ case FDFMTBEG:
+ if (lock_fdc(drive, true))
+ return -EINTR;
+ if (poll_drive(true, FD_RAW_NEED_DISK) == -EINTR)
+ return -EINTR;
+ ret = UDRS->flags;
+ process_fd_request();
+ if (ret & FD_VERIFY)
+ return -ENODEV;
+ if (!(ret & FD_DISK_WRITABLE))
+ return -EROFS;
+ return 0;
+ case FDFMTTRK:
+ if (UDRS->fd_ref != 1)
+ return -EBUSY;
+ return do_format(drive, &inparam.f);
+ case FDFMTEND:
+ case FDFLUSH:
+ if (lock_fdc(drive, true))
+ return -EINTR;
+ return invalidate_drive(bdev);
+ case FDSETEMSGTRESH:
+ UDP->max_errors.reporting = (unsigned short)(param & 0x0f);
+ return 0;
+ case FDGETMAXERRS:
+ outparam = (const char *)&UDP->max_errors;
+ break;
+ case FDSETMAXERRS:
+ UDP->max_errors = inparam.max_errors;
+ break;
+ case FDGETDRVTYP:
+ outparam = drive_name(type, drive);
+ SUPBOUND(size, strlen(outparam) + 1);
+ break;
+ case FDSETDRVPRM:
+ *UDP = inparam.dp;
+ break;
+ case FDGETDRVPRM:
+ outparam = (const char *)UDP;
+ break;
+ case FDPOLLDRVSTAT:
+ if (lock_fdc(drive, true))
+ return -EINTR;
+ if (poll_drive(true, FD_RAW_NEED_DISK) == -EINTR)
+ return -EINTR;
+ process_fd_request();
+ /* fall through */
+ case FDGETDRVSTAT:
+ outparam = (const char *)UDRS;
+ break;
+ case FDRESET:
+ return user_reset_fdc(drive, (int)param, true);
+ case FDGETFDCSTAT:
+ outparam = (const char *)UFDCS;
+ break;
+ case FDWERRORCLR:
+ memset(UDRWE, 0, sizeof(*UDRWE));
+ return 0;
+ case FDWERRORGET:
+ outparam = (const char *)UDRWE;
+ break;
+ case FDRAWCMD:
+ if (type)