summaryrefslogtreecommitdiffstats
path: root/drivers/s390/char/sclp.h
blob: 2c71d6ee7b5b63ef2ab295e33830258f6fd383a7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
/*
 *  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/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_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 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_READDATA	0x00770005
#define SCLP_CMDW_WRITEDATA	0x00760005
#define SCLP_CMDW_WRITEMASK	0x00780005

#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));

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);

/* 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__ */
OpenPOWER on IntegriCloud