uapi/asm/dasd.h

1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
6  * EMC Symmetrix ioctl Copyright EMC Corporation, 2008
7  * Author.........: Nigel Hislop <hislop_nigel@emc.com>
11  * to userspace by the DASDAPIVER-ioctl
40 	char type[4];		    /* from discipline.name, 'none' for unknown */
112 	char type[4];		    /* from discipline.name, 'none' for unknown */
123  * Read Subsystem Data - Performance Statistics
128 	unsigned char  data_format:4;
204  * 4/12: invalidate track
208 #define DASD_FMT_INT_INVAL	4	/* invalidate tracks */
236 /* Blocksize/data-length of a record was wrong */
240 #define DASD_FMT_ERR_RECORD_ID		4
241 /* If key-length was != 0 */
250 	unsigned char operation:3;     /* cache operation mode */
251 	unsigned char reserved:5;      /* cache operation mode */
265  * Perform EMC Symmetrix I/O
282 		__u8 mode:1;  member
297  * Here ist how the ioctl-nr should be used:
298  *    0 -   31   DASD driver itself
299  *   32 -  239   still open
300  *  240 -  255	 reserved for EMC
310 #define BIODASDSLCK    _IO(DASD_IOCTL_LETTER,4) /* steal lock */
332 #define BIODASDPSRD    _IOR(DASD_IOCTL_LETTER,4,dasd_rssd_perf_stats_t)
344 #define BIODASDCOPYPAIRSWAP _IOW(DASD_IOCTL_LETTER, 4, struct dasd_copypair_swap_data_t)