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 #define EVTYP_ASYNC 0x0A 31 #define EVTYP_OCF 0x1E 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 #define EVTYP_ASYNC_MASK 0x00400000 44 #define EVTYP_OCF_MASK 0x00000004 45 46 #define GNRLMSGFLGS_DOM 0x8000 47 #define GNRLMSGFLGS_SNDALRM 0x4000 48 #define GNRLMSGFLGS_HOLDMSG 0x2000 49 50 #define LNTPFLGS_CNTLTEXT 0x8000 51 #define LNTPFLGS_LABELTEXT 0x4000 52 #define LNTPFLGS_DATATEXT 0x2000 53 #define LNTPFLGS_ENDTEXT 0x1000 54 #define LNTPFLGS_PROMPTTEXT 0x0800 55 56 typedef unsigned int sclp_cmdw_t; 57 58 #define SCLP_CMDW_READ_EVENT_DATA 0x00770005 59 #define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005 60 #define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005 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 enum sclp_pm_event { 74 SCLP_PM_EVENT_FREEZE, 75 SCLP_PM_EVENT_THAW, 76 SCLP_PM_EVENT_RESTORE, 77 }; 78 79 #define SCLP_PANIC_PRIO 1 80 #define SCLP_PANIC_PRIO_CLIENT 0 81 82 typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */ 83 84 struct sccb_header { 85 u16 length; 86 u8 function_code; 87 u8 control_mask[3]; 88 u16 response_code; 89 } __attribute__((packed)); 90 91 extern u64 sclp_facilities; 92 #define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL) 93 #define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL) 94 #define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL) 95 #define SCLP_HAS_CPU_RECONFIG (sclp_facilities & 0x0400000000000000ULL) 96 97 98 struct gds_subvector { 99 u8 length; 100 u8 key; 101 } __attribute__((packed)); 102 103 struct gds_vector { 104 u16 length; 105 u16 gds_id; 106 } __attribute__((packed)); 107 108 struct evbuf_header { 109 u16 length; 110 u8 type; 111 u8 flags; 112 u16 _reserved; 113 } __attribute__((packed)); 114 115 struct sclp_req { 116 struct list_head list; /* list_head for request queueing. */ 117 sclp_cmdw_t command; /* sclp command to execute */ 118 void *sccb; /* pointer to the sccb to execute */ 119 char status; /* status of this request */ 120 int start_count; /* number of SVCs done for this req */ 121 /* Callback that is called after reaching final status. */ 122 void (*callback)(struct sclp_req *, void *data); 123 void *callback_data; 124 }; 125 126 #define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */ 127 #define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */ 128 #define SCLP_REQ_RUNNING 0x02 /* request is currently running */ 129 #define SCLP_REQ_DONE 0x03 /* request is completed successfully */ 130 #define SCLP_REQ_FAILED 0x05 /* request is finally failed */ 131 132 /* function pointers that a high level driver has to use for registration */ 133 /* of some routines it wants to be called from the low level driver */ 134 struct sclp_register { 135 struct list_head list; 136 /* User wants to receive: */ 137 sccb_mask_t receive_mask; 138 /* User wants to send: */ 139 sccb_mask_t send_mask; 140 /* H/W can receive: */ 141 sccb_mask_t sclp_receive_mask; 142 /* H/W can send: */ 143 sccb_mask_t sclp_send_mask; 144 /* called if event type availability changes */ 145 void (*state_change_fn)(struct sclp_register *); 146 /* called for events in cp_receive_mask/sclp_receive_mask */ 147 void (*receiver_fn)(struct evbuf_header *); 148 /* called for power management events */ 149 void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event); 150 /* pm event posted flag */ 151 int pm_event_posted; 152 }; 153 154 /* externals from sclp.c */ 155 int sclp_add_request(struct sclp_req *req); 156 void sclp_sync_wait(void); 157 int sclp_register(struct sclp_register *reg); 158 void sclp_unregister(struct sclp_register *reg); 159 int sclp_remove_processed(struct sccb_header *sccb); 160 int sclp_deactivate(void); 161 int sclp_reactivate(void); 162 int sclp_service_call(sclp_cmdw_t command, void *sccb); 163 164 int sclp_sdias_init(void); 165 void sclp_sdias_exit(void); 166 167 /* useful inlines */ 168 169 /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */ 170 /* translate single character from ASCII to EBCDIC */ 171 static inline unsigned char 172 sclp_ascebc(unsigned char ch) 173 { 174 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; 175 } 176 177 /* translate string from EBCDIC to ASCII */ 178 static inline void 179 sclp_ebcasc_str(unsigned char *str, int nr) 180 { 181 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr); 182 } 183 184 /* translate string from ASCII to EBCDIC */ 185 static inline void 186 sclp_ascebc_str(unsigned char *str, int nr) 187 { 188 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); 189 } 190 191 static inline struct gds_vector * 192 sclp_find_gds_vector(void *start, void *end, u16 id) 193 { 194 struct gds_vector *v; 195 196 for (v = start; (void *) v < end; v = (void *) v + v->length) 197 if (v->gds_id == id) 198 return v; 199 return NULL; 200 } 201 202 static inline struct gds_subvector * 203 sclp_find_gds_subvector(void *start, void *end, u8 key) 204 { 205 struct gds_subvector *sv; 206 207 for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length) 208 if (sv->key == key) 209 return sv; 210 return NULL; 211 } 212 213 #endif /* __SCLP_H__ */ 214