You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
2.5 KiB
97 lines
2.5 KiB
20 years ago
|
/*
|
||
|
|
* drivers/s390/char/sclp_rw.h
|
||
|
|
* interface to the SCLP-read/write driver
|
||
|
|
*
|
||
|
|
* S390 version
|
||
|
|
* Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
|
||
|
|
* Author(s): Martin Peschke <mpeschke@de.ibm.com>
|
||
|
|
* Martin Schwidefsky <schwidefsky@de.ibm.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __SCLP_RW_H__
|
||
|
|
#define __SCLP_RW_H__
|
||
|
|
|
||
|
|
#include <linux/list.h>
|
||
|
|
|
||
|
|
struct mto {
|
||
|
|
u16 length;
|
||
|
|
u16 type;
|
||
|
|
u16 line_type_flags;
|
||
|
|
u8 alarm_control;
|
||
|
|
u8 _reserved[3];
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
struct go {
|
||
|
|
u16 length;
|
||
|
|
u16 type;
|
||
|
|
u32 domid;
|
||
|
|
u8 hhmmss_time[8];
|
||
|
|
u8 th_time[3];
|
||
|
|
u8 reserved_0;
|
||
|
|
u8 dddyyyy_date[7];
|
||
|
|
u8 _reserved_1;
|
||
|
|
u16 general_msg_flags;
|
||
|
|
u8 _reserved_2[10];
|
||
|
|
u8 originating_system_name[8];
|
||
|
|
u8 job_guest_name[8];
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
struct mdb_header {
|
||
|
|
u16 length;
|
||
|
|
u16 type;
|
||
|
|
u32 tag;
|
||
|
|
u32 revision_code;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
struct mdb {
|
||
|
|
struct mdb_header header;
|
||
|
|
struct go go;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
struct msg_buf {
|
||
|
|
struct evbuf_header header;
|
||
|
|
struct mdb mdb;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
struct write_sccb {
|
||
|
|
struct sccb_header header;
|
||
|
|
struct msg_buf msg_buf;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
/* The number of empty mto buffers that can be contained in a single sccb. */
|
||
|
|
#define NR_EMPTY_MTO_PER_SCCB ((PAGE_SIZE - sizeof(struct sclp_buffer) - \
|
||
|
|
sizeof(struct write_sccb)) / sizeof(struct mto))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* data structure for information about list of SCCBs (only for writing),
|
||
|
|
* will be located at the end of a SCCBs page
|
||
|
|
*/
|
||
|
|
struct sclp_buffer {
|
||
|
|
struct list_head list; /* list_head for sccb_info chain */
|
||
|
|
struct sclp_req request;
|
||
|
|
struct write_sccb *sccb;
|
||
|
|
char *current_line;
|
||
|
|
int current_length;
|
||
|
|
int retry_count;
|
||
|
|
/* output format settings */
|
||
|
|
unsigned short columns;
|
||
|
|
unsigned short htab;
|
||
|
|
/* statistics about this buffer */
|
||
|
|
unsigned int mto_char_sum; /* # chars in sccb */
|
||
|
|
unsigned int mto_number; /* # mtos in sccb */
|
||
|
|
/* Callback that is called after reaching final status. */
|
||
|
|
void (*callback)(struct sclp_buffer *, int);
|
||
|
|
};
|
||
|
|
|
||
|
|
int sclp_rw_init(void);
|
||
|
|
struct sclp_buffer *sclp_make_buffer(void *, unsigned short, unsigned short);
|
||
|
|
void *sclp_unmake_buffer(struct sclp_buffer *);
|
||
|
|
int sclp_buffer_space(struct sclp_buffer *);
|
||
|
|
int sclp_write(struct sclp_buffer *buffer, const unsigned char *, int);
|
||
|
|
int sclp_emit_buffer(struct sclp_buffer *,void (*)(struct sclp_buffer *,int));
|
||
|
|
void sclp_set_columns(struct sclp_buffer *, unsigned short);
|
||
|
|
void sclp_set_htab(struct sclp_buffer *, unsigned short);
|
||
|
|
int sclp_chars_in_buffer(struct sclp_buffer *);
|
||
|
|
|
||
|
|
#endif /* __SCLP_RW_H__ */
|