diff options
Diffstat (limited to 'drivers/s390/char/sclp.h')
| -rw-r--r-- | drivers/s390/char/sclp.h | 392 |
1 files changed, 392 insertions, 0 deletions
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h new file mode 100644 index 000000000..86dd2cde0 --- /dev/null +++ b/drivers/s390/char/sclp.h @@ -0,0 +1,392 @@ +/* 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[0]; +} __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 int 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__ */ |