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1da177e4 LT |
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 | ||
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 | ||
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 | ||
40 | #define GnrlMsgFlgs_DOM 0x8000 | |
41 | #define GnrlMsgFlgs_SndAlrm 0x4000 | |
42 | #define GnrlMsgFlgs_HoldMsg 0x2000 | |
43 | ||
44 | #define LnTpFlgs_CntlText 0x8000 | |
45 | #define LnTpFlgs_LabelText 0x4000 | |
46 | #define LnTpFlgs_DataText 0x2000 | |
47 | #define LnTpFlgs_EndText 0x1000 | |
48 | #define LnTpFlgs_PromptText 0x0800 | |
49 | ||
50 | typedef unsigned int sclp_cmdw_t; | |
51 | ||
52 | #define SCLP_CMDW_READDATA 0x00770005 | |
53 | #define SCLP_CMDW_WRITEDATA 0x00760005 | |
54 | #define SCLP_CMDW_WRITEMASK 0x00780005 | |
55 | ||
56 | #define GDS_ID_MDSMU 0x1310 | |
57 | #define GDS_ID_MDSRouteInfo 0x1311 | |
58 | #define GDS_ID_AgUnWrkCorr 0x1549 | |
59 | #define GDS_ID_SNACondReport 0x1532 | |
60 | #define GDS_ID_CPMSU 0x1212 | |
61 | #define GDS_ID_RoutTargInstr 0x154D | |
62 | #define GDS_ID_OpReq 0x8070 | |
63 | #define GDS_ID_TextCmd 0x1320 | |
64 | ||
65 | #define GDS_KEY_SelfDefTextMsg 0x31 | |
66 | ||
67 | typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */ | |
68 | ||
69 | struct sccb_header { | |
70 | u16 length; | |
71 | u8 function_code; | |
72 | u8 control_mask[3]; | |
73 | u16 response_code; | |
74 | } __attribute__((packed)); | |
75 | ||
76 | struct gds_subvector { | |
77 | u8 length; | |
78 | u8 key; | |
79 | } __attribute__((packed)); | |
80 | ||
81 | struct gds_vector { | |
82 | u16 length; | |
83 | u16 gds_id; | |
84 | } __attribute__((packed)); | |
85 | ||
86 | struct evbuf_header { | |
87 | u16 length; | |
88 | u8 type; | |
89 | u8 flags; | |
90 | u16 _reserved; | |
91 | } __attribute__((packed)); | |
92 | ||
93 | struct sclp_req { | |
94 | struct list_head list; /* list_head for request queueing. */ | |
95 | sclp_cmdw_t command; /* sclp command to execute */ | |
96 | void *sccb; /* pointer to the sccb to execute */ | |
97 | char status; /* status of this request */ | |
98 | int start_count; /* number of SVCs done for this req */ | |
99 | /* Callback that is called after reaching final status. */ | |
100 | void (*callback)(struct sclp_req *, void *data); | |
101 | void *callback_data; | |
102 | }; | |
103 | ||
104 | #define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */ | |
105 | #define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */ | |
106 | #define SCLP_REQ_RUNNING 0x02 /* request is currently running */ | |
107 | #define SCLP_REQ_DONE 0x03 /* request is completed successfully */ | |
108 | #define SCLP_REQ_FAILED 0x05 /* request is finally failed */ | |
109 | ||
110 | /* function pointers that a high level driver has to use for registration */ | |
111 | /* of some routines it wants to be called from the low level driver */ | |
112 | struct sclp_register { | |
113 | struct list_head list; | |
114 | /* event masks this user is registered for */ | |
115 | sccb_mask_t receive_mask; | |
116 | sccb_mask_t send_mask; | |
117 | /* actually present events */ | |
118 | sccb_mask_t sclp_receive_mask; | |
119 | sccb_mask_t sclp_send_mask; | |
120 | /* called if event type availability changes */ | |
121 | void (*state_change_fn)(struct sclp_register *); | |
122 | /* called for events in cp_receive_mask/sclp_receive_mask */ | |
123 | void (*receiver_fn)(struct evbuf_header *); | |
124 | }; | |
125 | ||
126 | /* externals from sclp.c */ | |
127 | int sclp_add_request(struct sclp_req *req); | |
128 | void sclp_sync_wait(void); | |
129 | int sclp_register(struct sclp_register *reg); | |
130 | void sclp_unregister(struct sclp_register *reg); | |
131 | int sclp_remove_processed(struct sccb_header *sccb); | |
132 | int sclp_deactivate(void); | |
133 | int sclp_reactivate(void); | |
134 | ||
135 | /* useful inlines */ | |
136 | ||
137 | /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */ | |
138 | /* translate single character from ASCII to EBCDIC */ | |
139 | static inline unsigned char | |
140 | sclp_ascebc(unsigned char ch) | |
141 | { | |
142 | return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; | |
143 | } | |
144 | ||
145 | /* translate string from EBCDIC to ASCII */ | |
146 | static inline void | |
147 | sclp_ebcasc_str(unsigned char *str, int nr) | |
148 | { | |
149 | (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr); | |
150 | } | |
151 | ||
152 | /* translate string from ASCII to EBCDIC */ | |
153 | static inline void | |
154 | sclp_ascebc_str(unsigned char *str, int nr) | |
155 | { | |
156 | (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); | |
157 | } | |
158 | ||
159 | #endif /* __SCLP_H__ */ |