cregit-Linux how code gets into the kernel

Release 4.7 drivers/s390/char/sclp_diag.h

/*
 *    Copyright IBM Corp. 2013
 *    Author(s): Ralf Hoppe (rhoppe@de.ibm.com)
 */

#ifndef _SCLP_DIAG_H

#define _SCLP_DIAG_H

#include <linux/types.h>

/* return codes for Diagnostic Test FTP Service, as indicated in member
 * sclp_diag_ftp::ldflg
 */

#define SCLP_DIAG_FTP_OK	0x80U 
/* success */

#define SCLP_DIAG_FTP_LDFAIL	0x01U 
/* load failed */

#define SCLP_DIAG_FTP_LDNPERM	0x02U 
/* not allowed */

#define SCLP_DIAG_FTP_LDRUNS	0x03U 
/* LD runs */

#define SCLP_DIAG_FTP_LDNRUNS	0x04U 
/* LD does not run */


#define SCLP_DIAG_FTP_XPCX	0x80 
/* PCX communication code */

#define SCLP_DIAG_FTP_ROUTE	4 
/* routing code for new FTP service */

/*
 * length of Diagnostic Test FTP Service event buffer
 */

#define SCLP_DIAG_FTP_EVBUF_LEN				\
	(offsetof(struct sclp_diag_evbuf, mdd) +        \
         sizeof(struct sclp_diag_ftp))

/**
 * struct sclp_diag_ftp - Diagnostic Test FTP Service model-dependent data
 * @pcx: code for PCX communication (should be 0x80)
 * @ldflg: load flag (see defines above)
 * @cmd: FTP command
 * @pgsize: page size (0 = 4kB, 1 = large page size)
 * @srcflg: source flag
 * @spare: reserved (zeroes)
 * @offset: file offset
 * @fsize: file size
 * @length: buffer size resp. bytes transferred
 * @failaddr: failing address
 * @bufaddr: buffer address, virtual
 * @asce: region or segment table designation
 * @fident: file name (ASCII, zero-terminated)
 */

struct sclp_diag_ftp {
	
u8 pcx;
	
u8 ldflg;
	
u8 cmd;
	
u8 pgsize;
	
u8 srcflg;
	
u8 spare;
	
u64 offset;
	
u64 fsize;
	
u64 length;
	
u64 failaddr;
	
u64 bufaddr;
	
u64 asce;

	
u8 fident[256];
} 
__packed;

/**
 * struct sclp_diag_evbuf - Diagnostic Test (ET7) Event Buffer
 * @hdr: event buffer header
 * @route: diagnostic route
 * @mdd: model-dependent data (@route dependent)
 */

struct sclp_diag_evbuf {
	
struct evbuf_header hdr;
	
u16 route;

	union {
		
struct sclp_diag_ftp ftp;
	} 
mdd;
} 
__packed;

/**
 * struct sclp_diag_sccb - Diagnostic Test (ET7) SCCB
 * @hdr: SCCB header
 * @evbuf: event buffer
 */

struct sclp_diag_sccb {

	
struct sccb_header hdr;
	
struct sclp_diag_evbuf evbuf;
} 
__packed;

#endif /* _SCLP_DIAG_H */

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