drivers/s390/char/sclp.h

   1 /*
   2  *  drivers/s390/char/sclp.h
   3  *
   4  *  S390 version
   5  *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
   6  *    Author(s): Martin Peschke <mpeschke@de.ibm.com>
   7  *               Martin Schwidefsky <schwidefsky@de.ibm.com>
   8  */
   9
  10 #ifndef __SCLP_H__
  11 #define __SCLP_H__
  12
  13 #include <linux/types.h>
  14 #include <linux/list.h>
  15 #include <asm/sclp.h>
  16 #include <asm/ebcdic.h>
  17
  18 /* maximum number of pages concerning our own memory management */
  19 #define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
  20 #define MAX_CONSOLE_PAGES       4
  21
  22 #define EVTYP_OPCMD             0x01
  23 #define EVTYP_MSG               0x02
  24 #define EVTYP_STATECHANGE       0x08
  25 #define EVTYP_PMSGCMD           0x09
  26 #define EVTYP_CNTLPROGOPCMD     0x20
  27 #define EVTYP_CNTLPROGIDENT     0x0B
  28 #define EVTYP_SIGQUIESCE        0x1D
  29 #define EVTYP_VT220MSG          0x1A
  30 #define EVTYP_CONFMGMDATA       0x04
  31 #define EVTYP_SDIAS             0x1C
  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
  44 #define GNRLMSGFLGS_DOM         0x8000
  45 #define GNRLMSGFLGS_SNDALRM     0x4000
  46 #define GNRLMSGFLGS_HOLDMSG     0x2000
  47
  48 #define LNTPFLGS_CNTLTEXT       0x8000
  49 #define LNTPFLGS_LABELTEXT      0x4000
  50 #define LNTPFLGS_DATATEXT       0x2000
  51 #define LNTPFLGS_ENDTEXT        0x1000
  52 #define LNTPFLGS_PROMPTTEXT     0x0800
  53
  54 typedef unsigned int sclp_cmdw_t;
  55
  56 #define SCLP_CMDW_READ_EVENT_DATA       0x00770005
  57 #define SCLP_CMDW_WRITE_EVENT_DATA      0x00760005
  58 #define SCLP_CMDW_WRITE_EVENT_MASK      0x00780005
  59 #define SCLP_CMDW_READ_SCP_INFO         0x00020001
  60 #define SCLP_CMDW_READ_SCP_INFO_FORCED  0x00120001
  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
  73 typedef u32 sccb_mask_t;        /* ATTENTION: assumes 32bit mask !!! */
  74
  75 struct sccb_header {
  76         u16     length;
  77         u8      function_code;
  78         u8      control_mask[3];
  79         u16     response_code;
  80 } __attribute__((packed));
  81
  82 extern u64 sclp_facilities;
  83
  84 #define SCLP_HAS_CHP_INFO       (sclp_facilities & 0x8000000000000000ULL)
  85 #define SCLP_HAS_CHP_RECONFIG   (sclp_facilities & 0x2000000000000000ULL)
  86
  87 struct gds_subvector {
  88         u8      length;
  89         u8      key;
  90 } __attribute__((packed));
  91
  92 struct gds_vector {
  93         u16     length;
  94         u16     gds_id;
  95 } __attribute__((packed));
  96
  97 struct evbuf_header {
  98         u16     length;
  99         u8      type;
 100         u8      flags;
 101         u16     _reserved;
 102 } __attribute__((packed));
 103
 104 struct sclp_req {
 105         struct list_head list;          /* list_head for request queueing. */
 106         sclp_cmdw_t command;            /* sclp command to execute */
 107         void    *sccb;                  /* pointer to the sccb to execute */
 108         char    status;                 /* status of this request */
 109         int     start_count;            /* number of SVCs done for this req */
 110         /* Callback that is called after reaching final status. */
 111         void (*callback)(struct sclp_req *, void *data);
 112         void *callback_data;
 113 };
 114
 115 #define SCLP_REQ_FILLED   0x00  /* request is ready to be processed */
 116 #define SCLP_REQ_QUEUED   0x01  /* request is queued to be processed */
 117 #define SCLP_REQ_RUNNING  0x02  /* request is currently running */
 118 #define SCLP_REQ_DONE     0x03  /* request is completed successfully */
 119 #define SCLP_REQ_FAILED   0x05  /* request is finally failed */
 120
 121 /* function pointers that a high level driver has to use for registration */
 122 /* of some routines it wants to be called from the low level driver */
 123 struct sclp_register {
 124         struct list_head list;
 125         /* event masks this user is registered for */
 126         sccb_mask_t receive_mask;
 127         sccb_mask_t send_mask;
 128         /* actually present events */
 129         sccb_mask_t sclp_receive_mask;
 130         sccb_mask_t sclp_send_mask;
 131         /* called if event type availability changes */
 132         void (*state_change_fn)(struct sclp_register *);
 133         /* called for events in cp_receive_mask/sclp_receive_mask */
 134         void (*receiver_fn)(struct evbuf_header *);
 135 };
 136
 137 /* externals from sclp.c */
 138 int sclp_add_request(struct sclp_req *req);
 139 void sclp_sync_wait(void);
 140 int sclp_register(struct sclp_register *reg);
 141 void sclp_unregister(struct sclp_register *reg);
 142 int sclp_remove_processed(struct sccb_header *sccb);
 143 int sclp_deactivate(void);
 144 int sclp_reactivate(void);
 145 int sclp_service_call(sclp_cmdw_t command, void *sccb);
 146
 147 int sclp_sdias_init(void);
 148 void sclp_sdias_exit(void);
 149
 150 /* useful inlines */
 151
 152 /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
 153 /* translate single character from ASCII to EBCDIC */
 154 static inline unsigned char
 155 sclp_ascebc(unsigned char ch)
 156 {
 157         return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
 158 }
 159
 160 /* translate string from EBCDIC to ASCII */
 161 static inline void
 162 sclp_ebcasc_str(unsigned char *str, int nr)
 163 {
 164         (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
 165 }
 166
 167 /* translate string from ASCII to EBCDIC */
 168 static inline void
 169 sclp_ascebc_str(unsigned char *str, int nr)
 170 {
 171         (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
 172 }
 173
 174 #endif   /* __SCLP_H__ */