mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 08:36:40 +07:00
18d1a7f675
The sclp console and tty code currently uses several message text
objects in a single message event to print several lines with one
SCCB. This causes the output of these lines to be fused into a
block which is noticeable when selecting text in the operating system
message panel.
Instead use several message events with a single message text object
each to print every line on its own. This changes the SCCB layout
from
struct sccb_header
struct evbuf_header
struct mdb_header
struct go
struct mto
...
struct mto
to
struct sccb_header
struct evbuf_header
struct mdb_header
struct go
struct mto
...
struct evbuf_header
struct mdb_header
struct go
struct mto
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
99 lines
2.5 KiB
C
99 lines
2.5 KiB
C
/*
|
|
* interface to the SCLP-read/write driver
|
|
*
|
|
* Copyright IBM Corporation 1999, 2009
|
|
*
|
|
* 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;
|
|
struct mto mto;
|
|
} __attribute__((packed));
|
|
|
|
struct msg_buf {
|
|
struct evbuf_header header;
|
|
struct mdb mdb;
|
|
} __attribute__((packed));
|
|
|
|
/* The number of empty mto buffers that can be contained in a single sccb. */
|
|
#define NR_EMPTY_MSG_PER_SCCB ((PAGE_SIZE - sizeof(struct sclp_buffer) - \
|
|
sizeof(struct sccb_header)) / sizeof(struct msg_buf))
|
|
|
|
/*
|
|
* 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;
|
|
void *sccb;
|
|
struct msg_buf *current_msg;
|
|
char *current_line;
|
|
int current_length;
|
|
int retry_count;
|
|
/* output format settings */
|
|
unsigned short columns;
|
|
unsigned short htab;
|
|
/* statistics about this buffer */
|
|
unsigned int char_sum; /* # chars in sccb */
|
|
unsigned int messages; /* # messages 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 *);
|
|
|
|
#ifdef CONFIG_SCLP_CONSOLE
|
|
void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event);
|
|
#else
|
|
static inline void sclp_console_pm_event(enum sclp_pm_event sclp_pm_event) { }
|
|
#endif
|
|
|
|
#endif /* __SCLP_RW_H__ */
|