sclp.h revision 83119ad4a1ceacd99f380086c2855ae2c4268afc
1/*
2 *  drivers/s390/char/sclp.h
3 *
4 *  S390 version
5 *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 *    Author(s): Martin Peschke <mpeschke@de.ibm.com>
7 *		 Martin Schwidefsky <schwidefsky@de.ibm.com>
8 */
9
10#ifndef __SCLP_H__
11#define __SCLP_H__
12
13#include <linux/types.h>
14#include <linux/list.h>
15#include <asm/sclp.h>
16#include <asm/ebcdic.h>
17
18/* maximum number of pages concerning our own memory management */
19#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
20#define MAX_CONSOLE_PAGES	4
21
22#define EVTYP_OPCMD		0x01
23#define EVTYP_MSG		0x02
24#define EVTYP_STATECHANGE	0x08
25#define EVTYP_PMSGCMD		0x09
26#define EVTYP_CNTLPROGOPCMD	0x20
27#define EVTYP_CNTLPROGIDENT	0x0B
28#define EVTYP_SIGQUIESCE	0x1D
29#define EVTYP_VT220MSG		0x1A
30#define EVTYP_CONFMGMDATA	0x04
31#define EVTYP_SDIAS		0x1C
32
33#define EVTYP_OPCMD_MASK	0x80000000
34#define EVTYP_MSG_MASK		0x40000000
35#define EVTYP_STATECHANGE_MASK	0x01000000
36#define EVTYP_PMSGCMD_MASK	0x00800000
37#define EVTYP_CTLPROGOPCMD_MASK	0x00000001
38#define EVTYP_CTLPROGIDENT_MASK	0x00200000
39#define EVTYP_SIGQUIESCE_MASK	0x00000008
40#define EVTYP_VT220MSG_MASK	0x00000040
41#define EVTYP_CONFMGMDATA_MASK	0x10000000
42#define EVTYP_SDIAS_MASK	0x00000010
43
44#define GNRLMSGFLGS_DOM		0x8000
45#define GNRLMSGFLGS_SNDALRM	0x4000
46#define GNRLMSGFLGS_HOLDMSG	0x2000
47
48#define LNTPFLGS_CNTLTEXT	0x8000
49#define LNTPFLGS_LABELTEXT	0x4000
50#define LNTPFLGS_DATATEXT	0x2000
51#define LNTPFLGS_ENDTEXT	0x1000
52#define LNTPFLGS_PROMPTTEXT	0x0800
53
54typedef unsigned int sclp_cmdw_t;
55
56#define SCLP_CMDW_READ_EVENT_DATA	0x00770005
57#define SCLP_CMDW_WRITE_EVENT_DATA	0x00760005
58#define SCLP_CMDW_WRITE_EVENT_MASK	0x00780005
59#define SCLP_CMDW_READ_SCP_INFO		0x00020001
60#define SCLP_CMDW_READ_SCP_INFO_FORCED	0x00120001
61
62#define GDS_ID_MDSMU		0x1310
63#define GDS_ID_MDSROUTEINFO	0x1311
64#define GDS_ID_AGUNWRKCORR	0x1549
65#define GDS_ID_SNACONDREPORT	0x1532
66#define GDS_ID_CPMSU		0x1212
67#define GDS_ID_ROUTTARGINSTR	0x154D
68#define GDS_ID_OPREQ		0x8070
69#define GDS_ID_TEXTCMD		0x1320
70
71#define GDS_KEY_SELFDEFTEXTMSG	0x31
72
73typedef u32 sccb_mask_t;	/* ATTENTION: assumes 32bit mask !!! */
74
75struct sccb_header {
76	u16	length;
77	u8	function_code;
78	u8	control_mask[3];
79	u16	response_code;
80} __attribute__((packed));
81
82extern u64 sclp_facilities;
83
84#define SCLP_HAS_CHP_INFO	(sclp_facilities & 0x8000000000000000ULL)
85#define SCLP_HAS_CHP_RECONFIG	(sclp_facilities & 0x2000000000000000ULL)
86
87struct gds_subvector {
88	u8	length;
89	u8	key;
90} __attribute__((packed));
91
92struct gds_vector {
93	u16	length;
94	u16	gds_id;
95} __attribute__((packed));
96
97struct evbuf_header {
98	u16	length;
99	u8	type;
100	u8	flags;
101	u16	_reserved;
102} __attribute__((packed));
103
104struct sclp_req {
105	struct list_head list;		/* list_head for request queueing. */
106	sclp_cmdw_t command;		/* sclp command to execute */
107	void	*sccb;			/* pointer to the sccb to execute */
108	char	status;			/* status of this request */
109	int     start_count;		/* number of SVCs done for this req */
110	/* Callback that is called after reaching final status. */
111	void (*callback)(struct sclp_req *, void *data);
112	void *callback_data;
113};
114
115#define SCLP_REQ_FILLED	  0x00	/* request is ready to be processed */
116#define SCLP_REQ_QUEUED	  0x01	/* request is queued to be processed */
117#define SCLP_REQ_RUNNING  0x02	/* request is currently running */
118#define SCLP_REQ_DONE	  0x03	/* request is completed successfully */
119#define SCLP_REQ_FAILED	  0x05	/* request is finally failed */
120
121/* function pointers that a high level driver has to use for registration */
122/* of some routines it wants to be called from the low level driver */
123struct sclp_register {
124	struct list_head list;
125	/* event masks this user is registered for */
126	sccb_mask_t receive_mask;
127	sccb_mask_t send_mask;
128	/* actually present events */
129	sccb_mask_t sclp_receive_mask;
130	sccb_mask_t sclp_send_mask;
131	/* called if event type availability changes */
132	void (*state_change_fn)(struct sclp_register *);
133	/* called for events in cp_receive_mask/sclp_receive_mask */
134	void (*receiver_fn)(struct evbuf_header *);
135};
136
137/* externals from sclp.c */
138int sclp_add_request(struct sclp_req *req);
139void sclp_sync_wait(void);
140int sclp_register(struct sclp_register *reg);
141void sclp_unregister(struct sclp_register *reg);
142int sclp_remove_processed(struct sccb_header *sccb);
143int sclp_deactivate(void);
144int sclp_reactivate(void);
145int sclp_service_call(sclp_cmdw_t command, void *sccb);
146
147int sclp_sdias_init(void);
148void sclp_sdias_exit(void);
149
150/* useful inlines */
151
152/* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
153/* translate single character from ASCII to EBCDIC */
154static inline unsigned char
155sclp_ascebc(unsigned char ch)
156{
157	return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
158}
159
160/* translate string from EBCDIC to ASCII */
161static inline void
162sclp_ebcasc_str(unsigned char *str, int nr)
163{
164	(MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
165}
166
167/* translate string from ASCII to EBCDIC */
168static inline void
169sclp_ascebc_str(unsigned char *str, int nr)
170{
171	(MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
172}
173
174#endif	 /* __SCLP_H__ */
175