sclp.h revision 9f0128f9e7bf7b2929540d395daf8d823dc30c9f
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 56typedef 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 73enum 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 82typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */ 83 84struct sccb_header { 85 u16 length; 86 u8 function_code; 87 u8 control_mask[3]; 88 u16 response_code; 89} __attribute__((packed)); 90 91struct 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 101extern 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 110struct gds_subvector { 111 u8 length; 112 u8 key; 113} __attribute__((packed)); 114 115struct gds_vector { 116 u16 length; 117 u16 gds_id; 118} __attribute__((packed)); 119 120struct evbuf_header { 121 u16 length; 122 u8 type; 123 u8 flags; 124 u16 _reserved; 125} __attribute__((packed)); 126 127struct 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 */ 154struct 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 */ 175int sclp_add_request(struct sclp_req *req); 176void sclp_sync_wait(void); 177int sclp_register(struct sclp_register *reg); 178void sclp_unregister(struct sclp_register *reg); 179int sclp_remove_processed(struct sccb_header *sccb); 180int sclp_deactivate(void); 181int sclp_reactivate(void); 182int sclp_service_call(sclp_cmdw_t command, void *sccb); 183int sclp_sync_request(sclp_cmdw_t command, void *sccb); 184int sclp_sync_request_timeout(sclp_cmdw_t command, void *sccb, int timeout); 185 186int sclp_sdias_init(void); 187void sclp_sdias_exit(void); 188 189extern int sclp_console_pages; 190extern int sclp_console_drop; 191extern unsigned long sclp_console_full; 192extern u8 sclp_fac84; 193extern unsigned long long sclp_rzm; 194extern 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 */ 200static inline unsigned char 201sclp_ascebc(unsigned char ch) 202{ 203 return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch]; 204} 205 206/* translate string from EBCDIC to ASCII */ 207static inline void 208sclp_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 */ 214static inline void 215sclp_ascebc_str(unsigned char *str, int nr) 216{ 217 (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr); 218} 219 220static inline struct gds_vector * 221sclp_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 231static inline struct gds_subvector * 232sclp_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