83119ad4a1
Check if a command is available before executing. Saves some superfluous service calls that won't succeed anyway. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
175 lines
4.9 KiB
C
175 lines
4.9 KiB
C
/*
|
|
* drivers/s390/char/sclp.h
|
|
*
|
|
* 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_H__
|
|
#define __SCLP_H__
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <asm/sclp.h>
|
|
#include <asm/ebcdic.h>
|
|
|
|
/* maximum number of pages concerning our own memory management */
|
|
#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
|
|
#define MAX_CONSOLE_PAGES 4
|
|
|
|
#define EVTYP_OPCMD 0x01
|
|
#define EVTYP_MSG 0x02
|
|
#define EVTYP_STATECHANGE 0x08
|
|
#define EVTYP_PMSGCMD 0x09
|
|
#define EVTYP_CNTLPROGOPCMD 0x20
|
|
#define EVTYP_CNTLPROGIDENT 0x0B
|
|
#define EVTYP_SIGQUIESCE 0x1D
|
|
#define EVTYP_VT220MSG 0x1A
|
|
#define EVTYP_CONFMGMDATA 0x04
|
|
#define EVTYP_SDIAS 0x1C
|
|
|
|
#define EVTYP_OPCMD_MASK 0x80000000
|
|
#define EVTYP_MSG_MASK 0x40000000
|
|
#define EVTYP_STATECHANGE_MASK 0x01000000
|
|
#define EVTYP_PMSGCMD_MASK 0x00800000
|
|
#define EVTYP_CTLPROGOPCMD_MASK 0x00000001
|
|
#define EVTYP_CTLPROGIDENT_MASK 0x00200000
|
|
#define EVTYP_SIGQUIESCE_MASK 0x00000008
|
|
#define EVTYP_VT220MSG_MASK 0x00000040
|
|
#define EVTYP_CONFMGMDATA_MASK 0x10000000
|
|
#define EVTYP_SDIAS_MASK 0x00000010
|
|
|
|
#define GNRLMSGFLGS_DOM 0x8000
|
|
#define GNRLMSGFLGS_SNDALRM 0x4000
|
|
#define GNRLMSGFLGS_HOLDMSG 0x2000
|
|
|
|
#define LNTPFLGS_CNTLTEXT 0x8000
|
|
#define LNTPFLGS_LABELTEXT 0x4000
|
|
#define LNTPFLGS_DATATEXT 0x2000
|
|
#define LNTPFLGS_ENDTEXT 0x1000
|
|
#define LNTPFLGS_PROMPTTEXT 0x0800
|
|
|
|
typedef unsigned int sclp_cmdw_t;
|
|
|
|
#define SCLP_CMDW_READ_EVENT_DATA 0x00770005
|
|
#define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005
|
|
#define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005
|
|
#define SCLP_CMDW_READ_SCP_INFO 0x00020001
|
|
#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
|
|
|
|
#define GDS_ID_MDSMU 0x1310
|
|
#define GDS_ID_MDSROUTEINFO 0x1311
|
|
#define GDS_ID_AGUNWRKCORR 0x1549
|
|
#define GDS_ID_SNACONDREPORT 0x1532
|
|
#define GDS_ID_CPMSU 0x1212
|
|
#define GDS_ID_ROUTTARGINSTR 0x154D
|
|
#define GDS_ID_OPREQ 0x8070
|
|
#define GDS_ID_TEXTCMD 0x1320
|
|
|
|
#define GDS_KEY_SELFDEFTEXTMSG 0x31
|
|
|
|
typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */
|
|
|
|
struct sccb_header {
|
|
u16 length;
|
|
u8 function_code;
|
|
u8 control_mask[3];
|
|
u16 response_code;
|
|
} __attribute__((packed));
|
|
|
|
extern u64 sclp_facilities;
|
|
|
|
#define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL)
|
|
#define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL)
|
|
|
|
struct gds_subvector {
|
|
u8 length;
|
|
u8 key;
|
|
} __attribute__((packed));
|
|
|
|
struct gds_vector {
|
|
u16 length;
|
|
u16 gds_id;
|
|
} __attribute__((packed));
|
|
|
|
struct evbuf_header {
|
|
u16 length;
|
|
u8 type;
|
|
u8 flags;
|
|
u16 _reserved;
|
|
} __attribute__((packed));
|
|
|
|
struct sclp_req {
|
|
struct list_head list; /* list_head for request queueing. */
|
|
sclp_cmdw_t command; /* sclp command to execute */
|
|
void *sccb; /* pointer to the sccb to execute */
|
|
char status; /* status of this request */
|
|
int start_count; /* number of SVCs done for this req */
|
|
/* Callback that is called after reaching final status. */
|
|
void (*callback)(struct sclp_req *, void *data);
|
|
void *callback_data;
|
|
};
|
|
|
|
#define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */
|
|
#define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */
|
|
#define SCLP_REQ_RUNNING 0x02 /* request is currently running */
|
|
#define SCLP_REQ_DONE 0x03 /* request is completed successfully */
|
|
#define SCLP_REQ_FAILED 0x05 /* request is finally failed */
|
|
|
|
/* function pointers that a high level driver has to use for registration */
|
|
/* of some routines it wants to be called from the low level driver */
|
|
struct sclp_register {
|
|
struct list_head list;
|
|
/* event masks this user is registered for */
|
|
sccb_mask_t receive_mask;
|
|
sccb_mask_t send_mask;
|
|
/* actually present events */
|
|
sccb_mask_t sclp_receive_mask;
|
|
sccb_mask_t sclp_send_mask;
|
|
/* called if event type availability changes */
|
|
void (*state_change_fn)(struct sclp_register *);
|
|
/* called for events in cp_receive_mask/sclp_receive_mask */
|
|
void (*receiver_fn)(struct evbuf_header *);
|
|
};
|
|
|
|
/* externals from sclp.c */
|
|
int sclp_add_request(struct sclp_req *req);
|
|
void sclp_sync_wait(void);
|
|
int sclp_register(struct sclp_register *reg);
|
|
void sclp_unregister(struct sclp_register *reg);
|
|
int sclp_remove_processed(struct sccb_header *sccb);
|
|
int sclp_deactivate(void);
|
|
int sclp_reactivate(void);
|
|
int sclp_service_call(sclp_cmdw_t command, void *sccb);
|
|
|
|
int sclp_sdias_init(void);
|
|
void sclp_sdias_exit(void);
|
|
|
|
/* useful inlines */
|
|
|
|
/* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
|
|
/* translate single character from ASCII to EBCDIC */
|
|
static inline unsigned char
|
|
sclp_ascebc(unsigned char ch)
|
|
{
|
|
return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
|
|
}
|
|
|
|
/* translate string from EBCDIC to ASCII */
|
|
static inline void
|
|
sclp_ebcasc_str(unsigned char *str, int nr)
|
|
{
|
|
(MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
|
|
}
|
|
|
|
/* translate string from ASCII to EBCDIC */
|
|
static inline void
|
|
sclp_ascebc_str(unsigned char *str, int nr)
|
|
{
|
|
(MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
|
|
}
|
|
|
|
#endif /* __SCLP_H__ */
|