1 /*
2 * Copyright IBM Corp. 1999, 2009
3 *
4 * Author(s): Martin Peschke <mpeschke@de.ibm.com>
5 * Martin Schwidefsky <schwidefsky@de.ibm.com>
6 */
7
8 #ifndef __SCLP_H__
9 #define __SCLP_H__
10
11 #include <linux/types.h>
12 #include <linux/list.h>
13 #include <asm/sclp.h>
14 #include <asm/ebcdic.h>
15
16 /* maximum number of pages concerning our own memory management */
17 #define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
18 #define MAX_CONSOLE_PAGES 6
19
20 #define EVTYP_OPCMD 0x01
21 #define EVTYP_MSG 0x02
22 #define EVTYP_STATECHANGE 0x08
23 #define EVTYP_PMSGCMD 0x09
24 #define EVTYP_CNTLPROGOPCMD 0x20
25 #define EVTYP_CNTLPROGIDENT 0x0B
26 #define EVTYP_SIGQUIESCE 0x1D
27 #define EVTYP_VT220MSG 0x1A
28 #define EVTYP_CONFMGMDATA 0x04
29 #define EVTYP_SDIAS 0x1C
30
31 #define EVTYP_OPCMD_MASK 0x80000000
32 #define EVTYP_MSG_MASK 0x40000000
33 #define EVTYP_STATECHANGE_MASK 0x01000000
34 #define EVTYP_PMSGCMD_MASK 0x00800000
35 #define EVTYP_CTLPROGOPCMD_MASK 0x00000001
36 #define EVTYP_CTLPROGIDENT_MASK 0x00200000
37 #define EVTYP_SIGQUIESCE_MASK 0x00000008
38 #define EVTYP_VT220MSG_MASK 0x00000040
39 #define EVTYP_CONFMGMDATA_MASK 0x10000000
40 #define EVTYP_SDIAS_MASK 0x00000010
41
42 #define GNRLMSGFLGS_DOM 0x8000
43 #define GNRLMSGFLGS_SNDALRM 0x4000
44 #define GNRLMSGFLGS_HOLDMSG 0x2000
45
46 #define LNTPFLGS_CNTLTEXT 0x8000
47 #define LNTPFLGS_LABELTEXT 0x4000
48 #define LNTPFLGS_DATATEXT 0x2000
49 #define LNTPFLGS_ENDTEXT 0x1000
50 #define LNTPFLGS_PROMPTTEXT 0x0800
51
52 typedef unsigned int sclp_cmdw_t;
53
54 #define SCLP_CMDW_READ_EVENT_DATA 0x00770005
55 #define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005
56 #define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005
57
58 #define GDS_ID_MDSMU 0x1310
59 #define GDS_ID_MDSROUTEINFO 0x1311
60 #define GDS_ID_AGUNWRKCORR 0x1549
61 #define GDS_ID_SNACONDREPORT 0x1532
62 #define GDS_ID_CPMSU 0x1212
63 #define GDS_ID_ROUTTARGINSTR 0x154D
64 #define GDS_ID_OPREQ 0x8070
65 #define GDS_ID_TEXTCMD 0x1320
66
67 #define GDS_KEY_SELFDEFTEXTMSG 0x31
68
69 enum sclp_pm_event {
70 SCLP_PM_EVENT_FREEZE,
71 SCLP_PM_EVENT_THAW,
72 SCLP_PM_EVENT_RESTORE,
73 };
74
75 #define SCLP_PANIC_PRIO 1
76 #define SCLP_PANIC_PRIO_CLIENT 0
77
78 typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */
79
80 struct sccb_header {
81 u16 length;
82 u8 function_code;
83 u8 control_mask[3];
84 u16 response_code;
85 } __attribute__((packed));
86
87 extern u64 sclp_facilities;
88
89 #define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL)
90 #define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL)
91 #define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL)
92 #define SCLP_HAS_CPU_RECONFIG (sclp_facilities & 0x0400000000000000ULL)
93
94 struct gds_subvector {
95 u8 length;
96 u8 key;
97 } __attribute__((packed));
98
99 struct gds_vector {
100 u16 length;
101 u16 gds_id;
102 } __attribute__((packed));
103
104 struct evbuf_header {
105 u16 length;
106 u8 type;
107 u8 flags;
108 u16 _reserved;
109 } __attribute__((packed));
110
111 struct sclp_req {
112 struct list_head list; /* list_head for request queueing. */
113 sclp_cmdw_t command; /* sclp command to execute */
114 void *sccb; /* pointer to the sccb to execute */
115 char status; /* status of this request */
116 int start_count; /* number of SVCs done for this req */
117 /* Callback that is called after reaching final status. */
118 void (*callback)(struct sclp_req *, void *data);
119 void *callback_data;
120 };
121
122 #define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */
123 #define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */
124 #define SCLP_REQ_RUNNING 0x02 /* request is currently running */
125 #define SCLP_REQ_DONE 0x03 /* request is completed successfully */
126 #define SCLP_REQ_FAILED 0x05 /* request is finally failed */
127
128 /* function pointers that a high level driver has to use for registration */
129 /* of some routines it wants to be called from the low level driver */
130 struct sclp_register {
131 struct list_head list;
132 /* User wants to receive: */
133 sccb_mask_t receive_mask;
134 /* User wants to send: */
135 sccb_mask_t send_mask;
136 /* H/W can receive: */
137 sccb_mask_t sclp_receive_mask;
138 /* H/W can send: */
139 sccb_mask_t sclp_send_mask;
140 /* called if event type availability changes */
141 void (*state_change_fn)(struct sclp_register *);
142 /* called for events in cp_receive_mask/sclp_receive_mask */
143 void (*receiver_fn)(struct evbuf_header *);
144 /* called for power management events */
145 void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event);
146 /* pm event posted flag */
147 int pm_event_posted;
148 };
149
150 /* externals from sclp.c */
151 int sclp_add_request(struct sclp_req *req);
152 void sclp_sync_wait(void);
153 int sclp_register(struct sclp_register *reg);
154 void sclp_unregister(struct sclp_register *reg);
155 int sclp_remove_processed(struct sccb_header *sccb);
156 int sclp_deactivate(void);
157 int sclp_reactivate(void);
158 int sclp_service_call(sclp_cmdw_t command, void *sccb);
159
160 int sclp_sdias_init(void);
161 void sclp_sdias_exit(void);
162
163 /* useful inlines */
164
165 /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
166 /* translate single character from ASCII to EBCDIC */
167 static inline unsigned char
168 sclp_ascebc(unsigned char ch)
169 {
170 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
171 }
172
173 /* translate string from EBCDIC to ASCII */
174 static inline void
175 sclp_ebcasc_str(unsigned char *str, int nr)
176 {
177 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
178 }
179
180 /* translate string from ASCII to EBCDIC */
181 static inline void
182 sclp_ascebc_str(unsigned char *str, int nr)
183 {
184 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
185 }
186
187 #endif /* __SCLP_H__ */
188
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