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_DIAG_TEST 0x07 23 #define EVTYP_STATECHANGE 0x08 24 #define EVTYP_PMSGCMD 0x09 25 #define EVTYP_CNTLPROGOPCMD 0x20 26 #define EVTYP_CNTLPROGIDENT 0x0B 27 #define EVTYP_SIGQUIESCE 0x1D 28 #define EVTYP_VT220MSG 0x1A 29 #define EVTYP_CONFMGMDATA 0x04 30 #define EVTYP_SDIAS 0x1C 31 #define EVTYP_ASYNC 0x0A 32 #define EVTYP_OCF 0x1E 33 34 #define EVTYP_OPCMD_MASK 0x80000000 35 #define EVTYP_MSG_MASK 0x40000000 36 #define EVTYP_DIAG_TEST_MASK 0x02000000 37 #define EVTYP_STATECHANGE_MASK 0x01000000 38 #define EVTYP_PMSGCMD_MASK 0x00800000 39 #define EVTYP_CTLPROGOPCMD_MASK 0x00000001 40 #define EVTYP_CTLPROGIDENT_MASK 0x00200000 41 #define EVTYP_SIGQUIESCE_MASK 0x00000008 42 #define EVTYP_VT220MSG_MASK 0x00000040 43 #define EVTYP_CONFMGMDATA_MASK 0x10000000 44 #define EVTYP_SDIAS_MASK 0x00000010 45 #define EVTYP_ASYNC_MASK 0x00400000 46 #define EVTYP_OCF_MASK 0x00000004 47 48 #define GNRLMSGFLGS_DOM 0x8000 49 #define GNRLMSGFLGS_SNDALRM 0x4000 50 #define GNRLMSGFLGS_HOLDMSG 0x2000 51 52 #define LNTPFLGS_CNTLTEXT 0x8000 53 #define LNTPFLGS_LABELTEXT 0x4000 54 #define LNTPFLGS_DATATEXT 0x2000 55 #define LNTPFLGS_ENDTEXT 0x1000 56 #define LNTPFLGS_PROMPTTEXT 0x0800 57 58 typedef unsigned int sclp_cmdw_t; 59 60 #define SCLP_CMDW_READ_EVENT_DATA 0x00770005 61 #define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005 62 #define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005 63 64 #define GDS_ID_MDSMU 0x1310 65 #define GDS_ID_MDSROUTEINFO 0x1311 66 #define GDS_ID_AGUNWRKCORR 0x1549 67 #define GDS_ID_SNACONDREPORT 0x1532 68 #define GDS_ID_CPMSU 0x1212 69 #define GDS_ID_ROUTTARGINSTR 0x154D 70 #define GDS_ID_OPREQ 0x8070 71 #define GDS_ID_TEXTCMD 0x1320 72 73 #define GDS_KEY_SELFDEFTEXTMSG 0x31 74 75 enum sclp_pm_event { 76 SCLP_PM_EVENT_FREEZE, 77 SCLP_PM_EVENT_THAW, 78 SCLP_PM_EVENT_RESTORE, 79 }; 80 81 #define SCLP_PANIC_PRIO 1 82 #define SCLP_PANIC_PRIO_CLIENT 0 83 84 typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */ 85 86 struct sccb_header { 87 u16 length; 88 u8 function_code; 89 u8 control_mask[3]; 90 u16 response_code; 91 } __attribute__((packed)); 92 93 struct init_sccb { 94 struct sccb_header header; 95 u16 _reserved; 96 u16 mask_length; 97 sccb_mask_t receive_mask; 98 sccb_mask_t send_mask; 99 sccb_mask_t sclp_receive_mask; 100 sccb_mask_t sclp_send_mask; 101 } __attribute__((packed)); 102 103 extern u64 sclp_facilities; 104 105 #define SCLP_HAS_CHP_INFO (sclp_facilities & 0x8000000000000000ULL) 106 #define SCLP_HAS_CHP_RECONFIG (sclp_facilities & 0x2000000000000000ULL) 107 #define SCLP_HAS_CPU_INFO (sclp_facilities & 0x0800000000000000ULL) 108 #define SCLP_HAS_CPU_RECONFIG (sclp_facilities & 0x0400000000000000ULL) 109 #define SCLP_HAS_PCI_RECONFIG (sclp_facilities & 0x0000000040000000ULL) 110 111 112 struct gds_subvector { 113 u8 length; 114 u8 key; 115 } __attribute__((packed)); 116 117 struct gds_vector { 118 u16 length; 119 u16 gds_id; 120 } __attribute__((packed)); 121 122 struct evbuf_header { 123 u16 length; 124 u8 type; 125 u8 flags; 126 u16 _reserved; 127 } __attribute__((packed)); 128 129 struct sclp_req { 130 struct list_head list; /* list_head for request queueing. */ 131 sclp_cmdw_t command; /* sclp command to execute */ 132 void *sccb; /* pointer to the sccb to execute */ 133 char status; /* status of this request */ 134 int start_count; /* number of SVCs done for this req */ 135 /* Callback that is called after reaching final status. */ 136 void (*callback)(struct sclp_req *, void *data); 137 void *callback_data; 138 int queue_timeout; /* request queue timeout (sec), set by 139 caller of sclp_add_request(), if 140 needed */ 141 /* Internal fields */ 142 unsigned long queue_expires; /* request queue timeout (jiffies) */ 143 }; 144 145 #define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */ 146 #define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */ 147 #define SCLP_REQ_RUNNING 0x02 /* request is currently running */ 148 #define SCLP_REQ_DONE 0x03 /* request is completed successfully */ 149 #define SCLP_REQ_FAILED 0x05 /* request is finally failed */ 150 #define SCLP_REQ_QUEUED_TIMEOUT 0x06 /* request on queue timed out */ 151 152 #define SCLP_QUEUE_INTERVAL 5 /* timeout interval for request queue */ 153 154 /* function pointers that a high level driver has to use for registration */ 155 /* of some routines it wants to be called from the low level driver */ 156 struct sclp_register { 157 struct list_head list; 158 /* User wants to receive: */ 159 sccb_mask_t receive_mask; 160 /* User wants to send: */ 161 sccb_mask_t send_mask; 162 /* H/W can receive: */ 163 sccb_mask_t sclp_receive_mask; 164 /* H/W can send: */ 165 sccb_mask_t sclp_send_mask; 166 /* called if event type availability changes */ 167 void (*state_change_fn)(struct sclp_register *); 168 /* called for events in cp_receive_mask/sclp_receive_mask */ 169 void (*receiver_fn)(struct evbuf_header *); 170 /* called for power management events */ 171 void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event); 172 /* pm event posted flag */ 173 int pm_event_posted; 174 }; 175 176 /* externals from sclp.c */ 177 int sclp_add_request(struct sclp_req *req); 178 void sclp_sync_wait(void); 179 int sclp_register(struct sclp_register *reg); 180 void sclp_unregister(struct sclp_register *reg); 181 int sclp_remove_processed(struct sccb_header *sccb); 182 int sclp_deactivate(void); 183 int sclp_reactivate(void); 184 int sclp_service_call(sclp_cmdw_t command, void *sccb); 185 int sclp_sync_request(sclp_cmdw_t command, void *sccb); 186 int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout); 187 188 int sclp_sdias_init(void); 189 void sclp_sdias_exit(void); 190 191 extern int sclp_console_pages; 192 extern int sclp_console_drop; 193 extern unsigned long sclp_console_full; 194 extern u8 sclp_fac84; 195 extern unsigned long long sclp_rzm; 196 extern unsigned long long sclp_rnmax; 197 198 /* useful inlines */ 199 200 /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */ 201 /* translate single character from ASCII to EBCDIC */ 202 static inline unsigned char 203 sclp_ascebc(unsigned char ch) 204 { 205 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; 206 } 207 208 /* translate string from EBCDIC to ASCII */ 209 static inline void 210 sclp_ebcasc_str(unsigned char *str, int nr) 211 { 212 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr); 213 } 214 215 /* translate string from ASCII to EBCDIC */ 216 static inline void 217 sclp_ascebc_str(unsigned char *str, int nr) 218 { 219 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); 220 } 221 222 static inline struct gds_vector * 223 sclp_find_gds_vector(void *start, void *end, u16 id) 224 { 225 struct gds_vector *v; 226 227 for (v = start; (void *) v < end; v = (void *) v + v->length) 228 if (v->gds_id == id) 229 return v; 230 return NULL; 231 } 232 233 static inline struct gds_subvector * 234 sclp_find_gds_subvector(void *start, void *end, u8 key) 235 { 236 struct gds_subvector *sv; 237 238 for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length) 239 if (sv->key == key) 240 return sv; 241 return NULL; 242 } 243 244 #endif /* __SCLP_H__ */ 245