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 #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; 192 193 /* useful inlines */ 194 195 /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */ 196 /* translate single character from ASCII to EBCDIC */ 197 static inline unsigned char 198 sclp_ascebc(unsigned char ch) 199 { 200 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; 201 } 202 203 /* translate string from EBCDIC to ASCII */ 204 static inline void 205 sclp_ebcasc_str(unsigned char *str, int nr) 206 { 207 (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr); 208 } 209 210 /* translate string from ASCII to EBCDIC */ 211 static inline void 212 sclp_ascebc_str(unsigned char *str, int nr) 213 { 214 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); 215 } 216 217 static inline struct gds_vector * 218 sclp_find_gds_vector(void *start, void *end, u16 id) 219 { 220 struct gds_vector *v; 221 222 for (v = start; (void *) v < end; v = (void *) v + v->length) 223 if (v->gds_id == id) 224 return v; 225 return NULL; 226 } 227 228 static inline struct gds_subvector * 229 sclp_find_gds_subvector(void *start, void *end, u8 key) 230 { 231 struct gds_subvector *sv; 232 233 for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length) 234 if (sv->key == key) 235 return sv; 236 return NULL; 237 } 238 239 #endif /* __SCLP_H__ */ 240