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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 | /* SPDX-License-Identifier: GPL-2.0 */ /* * Copyright IBM Corp. 1999,2012 * * Author(s): Martin Peschke <mpeschke@de.ibm.com> * Martin Schwidefsky <schwidefsky@de.ibm.com> */ #ifndef __SCLP_H__ #define __SCLP_H__ #include <linux/types.h> #include <linux/list.h> #include <asm/asm-extable.h> #include <asm/sclp.h> #include <asm/ebcdic.h> /* maximum number of pages concerning our own memory management */ #define MAX_KMEM_PAGES (sizeof(unsigned long) << 3) #define SCLP_CONSOLE_PAGES 6 #define SCLP_EVTYP_MASK(T) (1UL << (sizeof(sccb_mask_t) * BITS_PER_BYTE - (T))) #define EVTYP_OPCMD 0x01 #define EVTYP_MSG 0x02 #define EVTYP_CONFMGMDATA 0x04 #define EVTYP_DIAG_TEST 0x07 #define EVTYP_STATECHANGE 0x08 #define EVTYP_PMSGCMD 0x09 #define EVTYP_ASYNC 0x0A #define EVTYP_CTLPROGIDENT 0x0B #define EVTYP_STORE_DATA 0x0C #define EVTYP_ERRNOTIFY 0x18 #define EVTYP_VT220MSG 0x1A #define EVTYP_SDIAS 0x1C #define EVTYP_SIGQUIESCE 0x1D #define EVTYP_OCF 0x1E #define EVTYP_OPCMD_MASK SCLP_EVTYP_MASK(EVTYP_OPCMD) #define EVTYP_MSG_MASK SCLP_EVTYP_MASK(EVTYP_MSG) #define EVTYP_CONFMGMDATA_MASK SCLP_EVTYP_MASK(EVTYP_CONFMGMDATA) #define EVTYP_DIAG_TEST_MASK SCLP_EVTYP_MASK(EVTYP_DIAG_TEST) #define EVTYP_STATECHANGE_MASK SCLP_EVTYP_MASK(EVTYP_STATECHANGE) #define EVTYP_PMSGCMD_MASK SCLP_EVTYP_MASK(EVTYP_PMSGCMD) #define EVTYP_ASYNC_MASK SCLP_EVTYP_MASK(EVTYP_ASYNC) #define EVTYP_CTLPROGIDENT_MASK SCLP_EVTYP_MASK(EVTYP_CTLPROGIDENT) #define EVTYP_STORE_DATA_MASK SCLP_EVTYP_MASK(EVTYP_STORE_DATA) #define EVTYP_ERRNOTIFY_MASK SCLP_EVTYP_MASK(EVTYP_ERRNOTIFY) #define EVTYP_VT220MSG_MASK SCLP_EVTYP_MASK(EVTYP_VT220MSG) #define EVTYP_SDIAS_MASK SCLP_EVTYP_MASK(EVTYP_SDIAS) #define EVTYP_SIGQUIESCE_MASK SCLP_EVTYP_MASK(EVTYP_SIGQUIESCE) #define EVTYP_OCF_MASK SCLP_EVTYP_MASK(EVTYP_OCF) #define GNRLMSGFLGS_DOM 0x8000 #define GNRLMSGFLGS_SNDALRM 0x4000 #define GNRLMSGFLGS_HOLDMSG 0x2000 #define LNTPFLGS_CNTLTEXT 0x8000 #define LNTPFLGS_LABELTEXT 0x4000 #define LNTPFLGS_DATATEXT 0x2000 #define LNTPFLGS_ENDTEXT 0x1000 #define LNTPFLGS_PROMPTTEXT 0x0800 typedef unsigned int sclp_cmdw_t; #define SCLP_CMDW_READ_CPU_INFO 0x00010001 #define SCLP_CMDW_READ_SCP_INFO 0x00020001 #define SCLP_CMDW_READ_STORAGE_INFO 0x00040001 #define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001 #define SCLP_CMDW_READ_EVENT_DATA 0x00770005 #define SCLP_CMDW_WRITE_EVENT_DATA 0x00760005 #define SCLP_CMDW_WRITE_EVENT_MASK 0x00780005 #define GDS_ID_MDSMU 0x1310 #define GDS_ID_MDSROUTEINFO 0x1311 #define GDS_ID_AGUNWRKCORR 0x1549 #define GDS_ID_SNACONDREPORT 0x1532 #define GDS_ID_CPMSU 0x1212 #define GDS_ID_ROUTTARGINSTR 0x154D #define GDS_ID_OPREQ 0x8070 #define GDS_ID_TEXTCMD 0x1320 #define GDS_KEY_SELFDEFTEXTMSG 0x31 typedef u64 sccb_mask_t; struct sccb_header { u16 length; u8 function_code; u8 control_mask[3]; u16 response_code; } __attribute__((packed)); struct init_sccb { struct sccb_header header; u16 _reserved; u16 mask_length; u8 masks[4 * 1021]; /* variable length */ /* * u8 receive_mask[mask_length]; * u8 send_mask[mask_length]; * u8 sclp_receive_mask[mask_length]; * u8 sclp_send_mask[mask_length]; */ } __attribute__((packed)); #define SCLP_MASK_SIZE_COMPAT 4 static inline sccb_mask_t sccb_get_mask(u8 *masks, size_t len, int i) { sccb_mask_t res = 0; memcpy(&res, masks + i * len, min(sizeof(res), len)); return res; } static inline void sccb_set_mask(u8 *masks, size_t len, int i, sccb_mask_t val) { memset(masks + i * len, 0, len); memcpy(masks + i * len, &val, min(sizeof(val), len)); } #define sccb_get_generic_mask(sccb, i) \ ({ \ __typeof__(sccb) __sccb = sccb; \ \ sccb_get_mask(__sccb->masks, __sccb->mask_length, i); \ }) #define sccb_get_recv_mask(sccb) sccb_get_generic_mask(sccb, 0) #define sccb_get_send_mask(sccb) sccb_get_generic_mask(sccb, 1) #define sccb_get_sclp_recv_mask(sccb) sccb_get_generic_mask(sccb, 2) #define sccb_get_sclp_send_mask(sccb) sccb_get_generic_mask(sccb, 3) #define sccb_set_generic_mask(sccb, i, val) \ ({ \ __typeof__(sccb) __sccb = sccb; \ \ sccb_set_mask(__sccb->masks, __sccb->mask_length, i, val); \ }) #define sccb_set_recv_mask(sccb, val) sccb_set_generic_mask(sccb, 0, val) #define sccb_set_send_mask(sccb, val) sccb_set_generic_mask(sccb, 1, val) #define sccb_set_sclp_recv_mask(sccb, val) sccb_set_generic_mask(sccb, 2, val) #define sccb_set_sclp_send_mask(sccb, val) sccb_set_generic_mask(sccb, 3, val) struct read_cpu_info_sccb { struct sccb_header header; u16 nr_configured; u16 offset_configured; u16 nr_standby; u16 offset_standby; /* * Without ext sccb, struct size is PAGE_SIZE. * With ext sccb, struct size is EXT_SCCB_READ_CPU. */ u8 reserved[]; } __attribute__((packed, aligned(PAGE_SIZE))); struct read_info_sccb { struct sccb_header header; /* 0-7 */ u16 rnmax; /* 8-9 */ u8 rnsize; /* 10 */ u8 _pad_11[16 - 11]; /* 11-15 */ u16 ncpurl; /* 16-17 */ u16 cpuoff; /* 18-19 */ u8 _pad_20[24 - 20]; /* 20-23 */ u8 loadparm[8]; /* 24-31 */ u8 _pad_32[42 - 32]; /* 32-41 */ u8 fac42; /* 42 */ u8 fac43; /* 43 */ u8 _pad_44[48 - 44]; /* 44-47 */ u64 facilities; /* 48-55 */ u8 _pad_56[66 - 56]; /* 56-65 */ u8 fac66; /* 66 */ u8 _pad_67[76 - 67]; /* 67-83 */ u32 ibc; /* 76-79 */ u8 _pad80[84 - 80]; /* 80-83 */ u8 fac84; /* 84 */ u8 fac85; /* 85 */ u8 _pad_86[91 - 86]; /* 86-90 */ u8 fac91; /* 91 */ u8 _pad_92[98 - 92]; /* 92-97 */ u8 fac98; /* 98 */ u8 hamaxpow; /* 99 */ u32 rnsize2; /* 100-103 */ u64 rnmax2; /* 104-111 */ u32 hsa_size; /* 112-115 */ u8 fac116; /* 116 */ u8 fac117; /* 117 */ u8 fac118; /* 118 */ u8 fac119; /* 119 */ u16 hcpua; /* 120-121 */ u8 _pad_122[124 - 122]; /* 122-123 */ u32 hmfai; /* 124-127 */ u8 _pad_128[134 - 128]; /* 128-133 */ u8 byte_134; /* 134 */ u8 cpudirq; /* 135 */ u16 cbl; /* 136-137 */ u8 _pad_138[EXT_SCCB_READ_SCP - 138]; } __packed __aligned(PAGE_SIZE); struct read_storage_sccb { struct sccb_header header; u16 max_id; u16 assigned; u16 standby; u16 :16; u32 entries[]; } __packed; static inline void sclp_fill_core_info(struct sclp_core_info *info, struct read_cpu_info_sccb *sccb) { char *page = (char *) sccb; memset(info, 0, sizeof(*info)); info->configured = sccb->nr_configured; info->standby = sccb->nr_standby; info->combined = sccb->nr_configured + sccb->nr_standby; memcpy(&info->core, page + sccb->offset_configured, info->combined * sizeof(struct sclp_core_entry)); } #define SCLP_HAS_CHP_INFO (sclp.facilities & 0x8000000000000000ULL) #define SCLP_HAS_CHP_RECONFIG (sclp.facilities & 0x2000000000000000ULL) #define SCLP_HAS_CPU_INFO (sclp.facilities & 0x0800000000000000ULL) #define SCLP_HAS_CPU_RECONFIG (sclp.facilities & 0x0400000000000000ULL) #define SCLP_HAS_PCI_RECONFIG (sclp.facilities & 0x0000000040000000ULL) #define SCLP_HAS_AP_RECONFIG (sclp.facilities & 0x0000000100000000ULL) struct gds_subvector { u8 length; u8 key; } __attribute__((packed)); struct gds_vector { u16 length; u16 gds_id; } __attribute__((packed)); struct evbuf_header { u16 length; u8 type; u8 flags; u16 _reserved; } __attribute__((packed)); struct sclp_req { struct list_head list; /* list_head for request queueing. */ sclp_cmdw_t command; /* sclp command to execute */ void *sccb; /* pointer to the sccb to execute */ char status; /* status of this request */ int start_count; /* number of SVCs done for this req */ /* Callback that is called after reaching final status. */ void (*callback)(struct sclp_req *, void *data); void *callback_data; int queue_timeout; /* request queue timeout (sec), set by caller of sclp_add_request(), if needed */ /* Internal fields */ unsigned long queue_expires; /* request queue timeout (jiffies) */ }; #define SCLP_REQ_FILLED 0x00 /* request is ready to be processed */ #define SCLP_REQ_QUEUED 0x01 /* request is queued to be processed */ #define SCLP_REQ_RUNNING 0x02 /* request is currently running */ #define SCLP_REQ_DONE 0x03 /* request is completed successfully */ #define SCLP_REQ_FAILED 0x05 /* request is finally failed */ #define SCLP_REQ_QUEUED_TIMEOUT 0x06 /* request on queue timed out */ #define SCLP_QUEUE_INTERVAL 5 /* timeout interval for request queue */ /* function pointers that a high level driver has to use for registration */ /* of some routines it wants to be called from the low level driver */ struct sclp_register { struct list_head list; /* User wants to receive: */ sccb_mask_t receive_mask; /* User wants to send: */ sccb_mask_t send_mask; /* H/W can receive: */ sccb_mask_t sclp_receive_mask; /* H/W can send: */ sccb_mask_t sclp_send_mask; /* called if event type availability changes */ void (*state_change_fn)(struct sclp_register *); /* called for events in cp_receive_mask/sclp_receive_mask */ void (*receiver_fn)(struct evbuf_header *); }; /* externals from sclp.c */ int sclp_add_request(struct sclp_req *req); void sclp_sync_wait(void); int sclp_register(struct sclp_register *reg); void sclp_unregister(struct sclp_register *reg); int sclp_remove_processed(struct sccb_header *sccb); int sclp_deactivate(void); int sclp_reactivate(void); int sclp_sync_request(sclp_cmdw_t command, void *sccb); int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout); int sclp_sdias_init(void); enum { sclp_init_state_uninitialized, sclp_init_state_initializing, sclp_init_state_initialized }; extern int sclp_init_state; extern int sclp_console_pages; extern bool sclp_console_drop; extern unsigned long sclp_console_full; extern bool sclp_mask_compat_mode; void sclp_early_wait_irq(void); int sclp_early_cmd(sclp_cmdw_t cmd, void *sccb); unsigned int sclp_early_con_check_linemode(struct init_sccb *sccb); unsigned int sclp_early_con_check_vt220(struct init_sccb *sccb); int sclp_early_set_event_mask(struct init_sccb *sccb, sccb_mask_t receive_mask, sccb_mask_t send_mask); struct read_info_sccb * __init sclp_early_get_info(void); /* useful inlines */ /* Perform service call. Return 0 on success, non-zero otherwise. */ static inline int sclp_service_call(sclp_cmdw_t command, void *sccb) { int cc = 4; /* Initialize for program check handling */ asm volatile( "0: .insn rre,0xb2200000,%1,%2\n" /* servc %1,%2 */ "1: ipm %0\n" " srl %0,28\n" "2:\n" EX_TABLE(0b, 2b) EX_TABLE(1b, 2b) : "+&d" (cc) : "d" (command), "a" (__pa(sccb)) : "cc", "memory"); if (cc == 4) return -EINVAL; if (cc == 3) return -EIO; if (cc == 2) return -EBUSY; return 0; } /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */ /* translate single character from ASCII to EBCDIC */ static inline unsigned char sclp_ascebc(unsigned char ch) { return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; } /* translate string from EBCDIC to ASCII */ static inline void sclp_ebcasc_str(char *str, int nr) { (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr); } /* translate string from ASCII to EBCDIC */ static inline void sclp_ascebc_str(char *str, int nr) { (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); } static inline struct gds_vector * sclp_find_gds_vector(void *start, void *end, u16 id) { struct gds_vector *v; for (v = start; (void *) v < end; v = (void *) v + v->length) if (v->gds_id == id) return v; return NULL; } static inline struct gds_subvector * sclp_find_gds_subvector(void *start, void *end, u8 key) { struct gds_subvector *sv; for (sv = start; (void *) sv < end; sv = (void *) sv + sv->length) if (sv->key == key) return sv; return NULL; } #endif /* __SCLP_H__ */ |