/* * Linux driver for System z and s390 unit record devices * (z/VM virtual punch, reader, printer) * * Copyright IBM Corp. 2001, 2007 * Authors: Malcolm Beattie <beattiem@uk.ibm.com> * Michael Holzheu <holzheu@de.ibm.com> * Frank Munzert <munzert@de.ibm.com> */ #ifndef _VMUR_H_ #define _VMUR_H_ #define DEV_CLASS_UR_I 0x20 /* diag210 unit record input device class */ #define DEV_CLASS_UR_O 0x10 /* diag210 unit record output device class */ /* * we only support z/VM's default unit record devices: * both in SPOOL directory control statement and in CP DEFINE statement * RDR defaults to 2540 reader * PUN defaults to 2540 punch * PRT defaults to 1403 printer */ #define READER_PUNCH_DEVTYPE 0x2540 #define PRINTER_DEVTYPE 0x1403 /* z/VM spool file control block SFBLOK */ struct file_control_block { char reserved_1[8]; char user_owner[8]; char user_orig[8]; __s32 data_recs; __s16 rec_len; __s16 file_num; __u8 file_stat; __u8 dev_type; char reserved_2[6]; char file_name[12]; char file_type[12]; char create_date[8]; char create_time[8]; char reserved_3[6]; __u8 file_class; __u8 sfb_lok; __u64 distr_code; __u32 reserved_4; __u8 current_starting_copy_number; __u8 sfblock_cntrl_flags; __u8 reserved_5; __u8 more_status_flags; char rest[200]; } __attribute__ ((packed)); #define FLG_SYSTEM_HOLD 0x04 #define FLG_CP_DUMP 0x10 #define FLG_USER_HOLD 0x20 #define FLG_IN_USE 0x80 /* * A struct urdev is created for each ur device that is made available * via the ccw_device driver model. */ struct urdev { struct ccw_device *cdev; /* Backpointer to ccw device */ struct mutex io_mutex; /* Serialises device IO */ struct completion *io_done; /* do_ur_io waits; irq completes */ struct device *device; struct cdev *char_device; struct ccw_dev_id dev_id; /* device id */ size_t reclen; /* Record length for *write* CCWs */ int class; /* VM device class */ int io_request_rc; /* return code from I/O request */ atomic_t ref_count; /* reference counter */ wait_queue_head_t wait; /* wait queue to serialize open */ int open_flag; /* "urdev is open" flag */ spinlock_t open_lock; /* serialize critical sections */ }; /* * A struct urfile is allocated at open() time for each device and * freed on release(). */ struct urfile { struct urdev *urd; unsigned int flags; size_t dev_reclen; __u16 file_reclen; }; /* * Device major/minor definitions. */ #define UR_MAJOR 0 /* get dynamic major */ /* * We map minor numbers directly to device numbers (0-FFFF) for simplicity. * This avoids having to allocate (and manage) slot numbers. */ #define NUM_MINORS 65536 /* Limiting each I/O to 511 records limits chan prog to 4KB (511 r/w + 1 NOP) */ #define MAX_RECS_PER_IO 511 #define WRITE_CCW_CMD 0x01 #define TRACE(x...) debug_sprintf_event(vmur_dbf, 1, x) #define CCWDEV_CU_DI(cutype, di) \ CCW_DEVICE(cutype, 0x00), .driver_info = (di) #define FILE_RECLEN_OFFSET 4064 /* reclen offset in spool data block */ #endif /* _VMUR_H_ */Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp | |
| frank munzert | frank munzert | 270 | 94.41% | 2 | 40.00% |
| michael holzheu | michael holzheu | 16 | 5.59% | 3 | 60.00% |
| Total | 286 | 100.00% | 5 | 100.00% |