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 SCLP_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; 102 103 #define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL) 104 #define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL) 105 #define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL) 106 #define SCLP_HAS_CPU_RECONFIG (sclp_facilities & 0x0400000000000000ULL) 107 #define SCLP_HAS_PCI_RECONFIG (sclp_facilities & 0x0000000040000000ULL) 108 109 110 struct gds_subvector { 111 u8 length; 112 u8 key; 113 } __attribute__((packed)); 114 115 struct gds_vector { 116 u16 length; 117 u16 gds_id; 118 } __attribute__((packed)); 119 120 struct evbuf_header { 121 u16 length; 122 u8 type; 123 u8 flags; 124 u16 _reserved; 125 } __attribute__((packed)); 126 127 struct sclp_req { 128 struct list_head list; /* list_head for request queueing. */ 129 sclp_cmdw_t command; /* sclp command to execute */ 130 void *sccb; /* pointer to the sccb to execute */ 131 char status; /* status of this request */ 132 int start_count; /* number of SVCs done for this req */ 133 /* Callback that is called after reaching final status. */ 134 void (*callback)(struct sclp_req *, void *data); 135 void *callback_data; 136 int queue_timeout; /* request queue timeout (sec), set by 137 caller of sclp_add_request(), if 138 needed */ 139 /* Internal fields */ 140 unsigned long queue_expires; /* request queue timeout (jiffies) */ 141 }; 142 143 #define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */ 144 #define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */ 145 #define SCLP_REQ_RUNNING 0x02 /* request is currently running */ 146 #define SCLP_REQ_DONE 0x03 /* request is completed successfully */ 147 #define SCLP_REQ_FAILED 0x05 /* request is finally failed */ 148 #define SCLP_REQ_QUEUED_TIMEOUT 0x06 /* request on queue timed out */ 149 150 #define SCLP_QUEUE_INTERVAL 5 /* timeout interval for request queue */ 151 152 /* function pointers that a high level driver has to use for registration */ 153 /* of some routines it wants to be called from the low level driver */ 154 struct sclp_register { 155 struct list_head list; 156 /* User wants to receive: */ 157 sccb_mask_t receive_mask; 158 /* User wants to send: */ 159 sccb_mask_t send_mask; 160 /* H/W can receive: */ 161 sccb_mask_t sclp_receive_mask; 162 /* H/W can send: */ 163 sccb_mask_t sclp_send_mask; 164 /* called if event type availability changes */ 165 void (*state_change_fn)(struct sclp_register *); 166 /* called for events in cp_receive_mask/sclp_receive_mask */ 167 void (*receiver_fn)(struct evbuf_header *); 168 /* called for power management events */ 169 void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event); 170 /* pm event posted flag */ 171 int pm_event_posted; 172 }; 173 174 /* externals from sclp.c */ 175 int sclp_add_request(struct sclp_req *req); 176 void sclp_sync_wait(void); 177 int sclp_register(struct sclp_register *reg); 178 void sclp_unregister(struct sclp_register *reg); 179 int sclp_remove_processed(struct sccb_header *sccb); 180 int sclp_deactivate(void); 181 int sclp_reactivate(void); 182 int sclp_service_call(sclp_cmdw_t command, void *sccb); 183 int sclp_sync_request(sclp_cmdw_t command, void *sccb); 184 int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout); 185 186 int sclp_sdias_init(void); 187 void sclp_sdias_exit(void); 188 189 extern int sclp_console_pages; 190 extern int sclp_console_drop; 191 extern unsigned long sclp_console_full; 192 extern u8 sclp_fac84; 193 extern unsigned long long sclp_rzm; 194 extern unsigned long long sclp_rnmax; 195 196 /* useful inlines */ 197 198 /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */ 199 /* translate single character from ASCII to EBCDIC */ 200 static inline unsigned char 201 sclp_ascebc(unsigned char ch) 202 { 203 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; 204 } 205 206 /* translate string from EBCDIC to ASCII */ 207 static inline void 208 sclp_ebcasc_str(unsigned char *str, int nr) 209 { 210 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr); 211 } 212 213 /* translate string from ASCII to EBCDIC */ 214 static inline void 215 sclp_ascebc_str(unsigned char *str, int nr) 216 { 217 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); 218 } 219 220 static inline struct gds_vector * 221 sclp_find_gds_vector(void *start, void *end, u16 id) 222 { 223 struct gds_vector *v; 224 225 for (v = start; (void *) v < end; v = (void *) v + v->length) 226 if (v->gds_id == id) 227 return v; 228 return NULL; 229 } 230 231 static inline struct gds_subvector * 232 sclp_find_gds_subvector(void *start, void *end, u8 key) 233 { 234 struct gds_subvector *sv; 235 236 for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length) 237 if (sv->key == key) 238 return sv; 239 return NULL; 240 } 241 242 #endif /* __SCLP_H__ */ 243