uapi/asm/dasd.h

1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
11  * to userspace by the DASDAPIVER-ioctl
20 #define DASD_IOCTL_LETTER 'D'
67 #define DASD_FORMAT_LDL  1
123  * Read Subsystem Data - Performance Statistics
126 	unsigned char  invalid:1;
166 	unsigned int dasd_io_secs[32];	 /* histogram of request's sizes */
167 	unsigned int dasd_io_times[32];	 /* histogram of requests's times */
168 	unsigned int dasd_io_timps[32];	 /* histogram of requests's times per sector */
169 	unsigned int dasd_io_time1[32];	 /* histogram of time from build to start */
170 	unsigned int dasd_io_time2[32];	 /* histogram of time from start to irq */
171 	unsigned int dasd_io_time2ps[32]; /* histogram of time from start to irq */
172 	unsigned int dasd_io_time3[32];	 /* histogram of time from irq to end */
173 	unsigned int dasd_io_nr_req[32]; /* histogram of # of requests in chanq */
202  * 1/9: also write record zero
206 #define DASD_FMT_INT_FMT_R0	1	/* write record zero */
233 #define DASD_FMT_ERR_TOO_FEW_RECORDS	1
236 /* Blocksize/data-length of a record was wrong */
241 /* If key-length was != 0 */
282 		__u8 mode:1;
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
306 #define BIODASDENABLE  _IO(DASD_IOCTL_LETTER,1)
326 #define BIODASDINFO    _IOR(DASD_IOCTL_LETTER,1,dasd_information_t)
338 #define BIODASDFMT     _IOW(DASD_IOCTL_LETTER,1,format_data_t)
347 #define BIODASDSNID    _IOWR(DASD_IOCTL_LETTER, 1, struct dasd_snid_ioctl_data)