/* 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__ */