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 54 typedef 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 73 typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */ 74 75 struct sccb_header { 76 u16 length; 77 u8 function_code; 78 u8 control_mask[3]; 79 u16 response_code; 80 } __attribute__((packed)); 81 82 extern u64 sclp_facilities; 83 84 #define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL) 85 #define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL) 86 87 struct gds_subvector { 88 u8 length; 89 u8 key; 90 } __attribute__((packed)); 91 92 struct gds_vector { 93 u16 length; 94 u16 gds_id; 95 } __attribute__((packed)); 96 97 struct evbuf_header { 98 u16 length; 99 u8 type; 100 u8 flags; 101 u16 _reserved; 102 } __attribute__((packed)); 103 104 struct 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 */ 123 struct 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 */ 138 int sclp_add_request(struct sclp_req *req); 139 void sclp_sync_wait(void); 140 int sclp_register(struct sclp_register *reg); 141 void sclp_unregister(struct sclp_register *reg); 142 int sclp_remove_processed(struct sccb_header *sccb); 143 int sclp_deactivate(void); 144 int sclp_reactivate(void); 145 int sclp_service_call(sclp_cmdw_t command, void *sccb); 146 147 int sclp_sdias_init(void); 148 void 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 */ 154 static inline unsigned char 155 sclp_ascebc(unsigned char ch) 156 { 157 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; 158 } 159 160 /* translate string from EBCDIC to ASCII */ 161 static inline void 162 sclp_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 */ 168 static inline void 169 sclp_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