1 /* 2 * Copyright IBM Corp. 1999,2012 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 struct init_sccb { 92 struct sccb_header header; 93 u16 _reserved; 94 u16 mask_length; 95 sccb_mask_t receive_mask; 96 sccb_mask_t send_mask; 97 sccb_mask_t sclp_receive_mask; 98 sccb_mask_t sclp_send_mask; 99 } __attribute__((packed)); 100 101 extern u64 sclp_facilities; 102 #define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL) 103 #define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL) 104 #define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL) 105 #define SCLP_HAS_CPU_RECONFIG (sclp_facilities & 0x0400000000000000ULL) 106 #define SCLP_HAS_PCI_RECONFIG (sclp_facilities & 0x0000000040000000ULL) 107 108 109 struct gds_subvector { 110 u8 length; 111 u8 key; 112 } __attribute__((packed)); 113 114 struct gds_vector { 115 u16 length; 116 u16 gds_id; 117 } __attribute__((packed)); 118 119 struct evbuf_header { 120 u16 length; 121 u8 type; 122 u8 flags; 123 u16 _reserved; 124 } __attribute__((packed)); 125 126 struct sclp_req { 127 struct list_head list; /* list_head for request queueing. */ 128 sclp_cmdw_t command; /* sclp command to execute */ 129 void *sccb; /* pointer to the sccb to execute */ 130 char status; /* status of this request */ 131 int start_count; /* number of SVCs done for this req */ 132 /* Callback that is called after reaching final status. */ 133 void (*callback)(struct sclp_req *, void *data); 134 void *callback_data; 135 }; 136 137 #define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */ 138 #define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */ 139 #define SCLP_REQ_RUNNING 0x02 /* request is currently running */ 140 #define SCLP_REQ_DONE 0x03 /* request is completed successfully */ 141 #define SCLP_REQ_FAILED 0x05 /* request is finally failed */ 142 143 /* function pointers that a high level driver has to use for registration */ 144 /* of some routines it wants to be called from the low level driver */ 145 struct sclp_register { 146 struct list_head list; 147 /* User wants to receive: */ 148 sccb_mask_t receive_mask; 149 /* User wants to send: */ 150 sccb_mask_t send_mask; 151 /* H/W can receive: */ 152 sccb_mask_t sclp_receive_mask; 153 /* H/W can send: */ 154 sccb_mask_t sclp_send_mask; 155 /* called if event type availability changes */ 156 void (*state_change_fn)(struct sclp_register *); 157 /* called for events in cp_receive_mask/sclp_receive_mask */ 158 void (*receiver_fn)(struct evbuf_header *); 159 /* called for power management events */ 160 void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event); 161 /* pm event posted flag */ 162 int pm_event_posted; 163 }; 164 165 /* externals from sclp.c */ 166 int sclp_add_request(struct sclp_req *req); 167 void sclp_sync_wait(void); 168 int sclp_register(struct sclp_register *reg); 169 void sclp_unregister(struct sclp_register *reg); 170 int sclp_remove_processed(struct sccb_header *sccb); 171 int sclp_deactivate(void); 172 int sclp_reactivate(void); 173 int sclp_service_call(sclp_cmdw_t command, void *sccb); 174 175 int sclp_sdias_init(void); 176 void sclp_sdias_exit(void); 177 178 /* useful inlines */ 179 180 /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */ 181 /* translate single character from ASCII to EBCDIC */ 182 static inline unsigned char 183 sclp_ascebc(unsigned char ch) 184 { 185 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; 186 } 187 188 /* translate string from EBCDIC to ASCII */ 189 static inline void 190 sclp_ebcasc_str(unsigned char *str, int nr) 191 { 192 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr); 193 } 194 195 /* translate string from ASCII to EBCDIC */ 196 static inline void 197 sclp_ascebc_str(unsigned char *str, int nr) 198 { 199 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); 200 } 201 202 static inline struct gds_vector * 203 sclp_find_gds_vector(void *start, void *end, u16 id) 204 { 205 struct gds_vector *v; 206 207 for (v = start; (void *) v < end; v = (void *) v + v->length) 208 if (v->gds_id == id) 209 return v; 210 return NULL; 211 } 212 213 static inline struct gds_subvector * 214 sclp_find_gds_subvector(void *start, void *end, u8 key) 215 { 216 struct gds_subvector *sv; 217 218 for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length) 219 if (sv->key == key) 220 return sv; 221 return NULL; 222 } 223 224 #endif /* __SCLP_H__ */ 225