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 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_READ_EVENT_DATA 0x00770005 53 #define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005 54 #define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005 55 #define SCLP_CMDW_READ_SCP_INFO 0x00020001 56 #define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001 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 typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */ 70 71 struct gds_subvector { 72 u8 length; 73 u8 key; 74 } __attribute__((packed)); 75 76 struct gds_vector { 77 u16 length; 78 u16 gds_id; 79 } __attribute__((packed)); 80 81 struct evbuf_header { 82 u16 length; 83 u8 type; 84 u8 flags; 85 u16 _reserved; 86 } __attribute__((packed)); 87 88 struct sclp_req { 89 struct list_head list; /* list_head for request queueing. */ 90 sclp_cmdw_t command; /* sclp command to execute */ 91 void *sccb; /* pointer to the sccb to execute */ 92 char status; /* status of this request */ 93 int start_count; /* number of SVCs done for this req */ 94 /* Callback that is called after reaching final status. */ 95 void (*callback)(struct sclp_req *, void *data); 96 void *callback_data; 97 }; 98 99 #define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */ 100 #define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */ 101 #define SCLP_REQ_RUNNING 0x02 /* request is currently running */ 102 #define SCLP_REQ_DONE 0x03 /* request is completed successfully */ 103 #define SCLP_REQ_FAILED 0x05 /* request is finally failed */ 104 105 /* function pointers that a high level driver has to use for registration */ 106 /* of some routines it wants to be called from the low level driver */ 107 struct sclp_register { 108 struct list_head list; 109 /* event masks this user is registered for */ 110 sccb_mask_t receive_mask; 111 sccb_mask_t send_mask; 112 /* actually present events */ 113 sccb_mask_t sclp_receive_mask; 114 sccb_mask_t sclp_send_mask; 115 /* called if event type availability changes */ 116 void (*state_change_fn)(struct sclp_register *); 117 /* called for events in cp_receive_mask/sclp_receive_mask */ 118 void (*receiver_fn)(struct evbuf_header *); 119 }; 120 121 /* externals from sclp.c */ 122 int sclp_add_request(struct sclp_req *req); 123 void sclp_sync_wait(void); 124 int sclp_register(struct sclp_register *reg); 125 void sclp_unregister(struct sclp_register *reg); 126 int sclp_remove_processed(struct sccb_header *sccb); 127 int sclp_deactivate(void); 128 int sclp_reactivate(void); 129 int sclp_service_call(sclp_cmdw_t command, void *sccb); 130 131 /* useful inlines */ 132 133 /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */ 134 /* translate single character from ASCII to EBCDIC */ 135 static inline unsigned char 136 sclp_ascebc(unsigned char ch) 137 { 138 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; 139 } 140 141 /* translate string from EBCDIC to ASCII */ 142 static inline void 143 sclp_ebcasc_str(unsigned char *str, int nr) 144 { 145 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr); 146 } 147 148 /* translate string from ASCII to EBCDIC */ 149 static inline void 150 sclp_ascebc_str(unsigned char *str, int nr) 151 { 152 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); 153 } 154 155 #endif /* __SCLP_H__ */ 156