2 * interface to the SCLP-read/write driver
4 * Copyright IBM Corporation 1999, 2009
6 * Author(s): Martin Peschke <mpeschke@de.ibm.com>
7 * Martin Schwidefsky <schwidefsky@de.ibm.com>
13 #include <linux/list.h>
21 } __attribute__((packed));
32 u16 general_msg_flags;
34 u8 originating_system_name[8];
36 } __attribute__((packed));
43 } __attribute__((packed));
46 struct mdb_header header;
48 } __attribute__((packed));
51 struct evbuf_header header;
53 } __attribute__((packed));
56 struct sccb_header header;
57 struct msg_buf msg_buf;
58 } __attribute__((packed));
60 /* The number of empty mto buffers that can be contained in a single sccb. */
61 #define NR_EMPTY_MTO_PER_SCCB ((PAGE_SIZE - sizeof(struct sclp_buffer) - \
62 sizeof(struct write_sccb)) / sizeof(struct mto))
65 * data structure for information about list of SCCBs (only for writing),
66 * will be located at the end of a SCCBs page
69 struct list_head list; /* list_head for sccb_info chain */
70 struct sclp_req request;
71 struct write_sccb *sccb;
75 /* output format settings */
76 unsigned short columns;
78 /* statistics about this buffer */
79 unsigned int mto_char_sum; /* # chars in sccb */
80 unsigned int mto_number; /* # mtos in sccb */
81 /* Callback that is called after reaching final status. */
82 void (*callback)(struct sclp_buffer *, int);
85 int sclp_rw_init(void);
86 struct sclp_buffer *sclp_make_buffer(void *, unsigned short, unsigned short);
87 void *sclp_unmake_buffer(struct sclp_buffer *);
88 int sclp_buffer_space(struct sclp_buffer *);
89 int sclp_write(struct sclp_buffer *buffer, const unsigned char *, int);
90 int sclp_emit_buffer(struct sclp_buffer *,void (*)(struct sclp_buffer *,int));
91 void sclp_set_columns(struct sclp_buffer *, unsigned short);
92 void sclp_set_htab(struct sclp_buffer *, unsigned short);
93 int sclp_chars_in_buffer(struct sclp_buffer *);
95 #ifdef CONFIG_SCLP_CONSOLE
96 void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event);
98 static inline void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event) { }
101 #endif /* __SCLP_RW_H__ */