drivers/s390/char/sclp.h

   1 /*
   2  * Copyright IBM Corp. 1999, 2009
   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 MAX_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
  31 #define EVTYP_OPCMD_MASK        0x80000000
  32 #define EVTYP_MSG_MASK          0x40000000
  33 #define EVTYP_STATECHANGE_MASK  0x01000000
  34 #define EVTYP_PMSGCMD_MASK      0x00800000
  35 #define EVTYP_CTLPROGOPCMD_MASK 0x00000001
  36 #define EVTYP_CTLPROGIDENT_MASK 0x00200000
  37 #define EVTYP_SIGQUIESCE_MASK   0x00000008
  38 #define EVTYP_VT220MSG_MASK     0x00000040
  39 #define EVTYP_CONFMGMDATA_MASK  0x10000000
  40 #define EVTYP_SDIAS_MASK        0x00000010
  41
  42 #define GNRLMSGFLGS_DOM         0x8000
  43 #define GNRLMSGFLGS_SNDALRM     0x4000
  44 #define GNRLMSGFLGS_HOLDMSG     0x2000
  45
  46 #define LNTPFLGS_CNTLTEXT       0x8000
  47 #define LNTPFLGS_LABELTEXT      0x4000
  48 #define LNTPFLGS_DATATEXT       0x2000
  49 #define LNTPFLGS_ENDTEXT        0x1000
  50 #define LNTPFLGS_PROMPTTEXT     0x0800
  51
  52 typedef unsigned int sclp_cmdw_t;
  53
  54 #define SCLP_CMDW_READ_EVENT_DATA       0x00770005
  55 #define SCLP_CMDW_WRITE_EVENT_DATA      0x00760005
  56 #define SCLP_CMDW_WRITE_EVENT_MASK      0x00780005
  57
  58 #define GDS_ID_MDSMU            0x1310
  59 #define GDS_ID_MDSROUTEINFO     0x1311
  60 #define GDS_ID_AGUNWRKCORR      0x1549
  61 #define GDS_ID_SNACONDREPORT    0x1532
  62 #define GDS_ID_CPMSU            0x1212
  63 #define GDS_ID_ROUTTARGINSTR    0x154D
  64 #define GDS_ID_OPREQ            0x8070
  65 #define GDS_ID_TEXTCMD          0x1320
  66
  67 #define GDS_KEY_SELFDEFTEXTMSG  0x31
  68
  69 enum sclp_pm_event {
  70         SCLP_PM_EVENT_FREEZE,
  71         SCLP_PM_EVENT_THAW,
  72         SCLP_PM_EVENT_RESTORE,
  73 };
  74
  75 #define SCLP_PANIC_PRIO         1
  76 #define SCLP_PANIC_PRIO_CLIENT  0
  77
  78 typedef u32 sccb_mask_t;        /* ATTENTION: assumes 32bit mask !!! */
  79
  80 struct sccb_header {
  81         u16     length;
  82         u8      function_code;
  83         u8      control_mask[3];
  84         u16     response_code;
  85 } __attribute__((packed));
  86
  87 extern u64 sclp_facilities;
  88
  89 #define SCLP_HAS_CHP_INFO       (sclp_facilities & 0x8000000000000000ULL)
  90 #define SCLP_HAS_CHP_RECONFIG   (sclp_facilities & 0x2000000000000000ULL)
  91 #define SCLP_HAS_CPU_INFO       (sclp_facilities & 0x0800000000000000ULL)
  92 #define SCLP_HAS_CPU_RECONFIG   (sclp_facilities & 0x0400000000000000ULL)
  93
  94 struct gds_subvector {
  95         u8      length;
  96         u8      key;
  97 } __attribute__((packed));
  98
  99 struct gds_vector {
 100         u16     length;
 101         u16     gds_id;
 102 } __attribute__((packed));
 103
 104 struct evbuf_header {
 105         u16     length;
 106         u8      type;
 107         u8      flags;
 108         u16     _reserved;
 109 } __attribute__((packed));
 110
 111 struct sclp_req {
 112         struct list_head list;          /* list_head for request queueing. */
 113         sclp_cmdw_t command;            /* sclp command to execute */
 114         void    *sccb;                  /* pointer to the sccb to execute */
 115         char    status;                 /* status of this request */
 116         int     start_count;            /* number of SVCs done for this req */
 117         /* Callback that is called after reaching final status. */
 118         void (*callback)(struct sclp_req *, void *data);
 119         void *callback_data;
 120 };
 121
 122 #define SCLP_REQ_FILLED   0x00  /* request is ready to be processed */
 123 #define SCLP_REQ_QUEUED   0x01  /* request is queued to be processed */
 124 #define SCLP_REQ_RUNNING  0x02  /* request is currently running */
 125 #define SCLP_REQ_DONE     0x03  /* request is completed successfully */
 126 #define SCLP_REQ_FAILED   0x05  /* request is finally failed */
 127
 128 /* function pointers that a high level driver has to use for registration */
 129 /* of some routines it wants to be called from the low level driver */
 130 struct sclp_register {
 131         struct list_head list;
 132         /* User wants to receive: */
 133         sccb_mask_t receive_mask;
 134         /* User wants to send: */
 135         sccb_mask_t send_mask;
 136         /* H/W can receive: */
 137         sccb_mask_t sclp_receive_mask;
 138         /* H/W can send: */
 139         sccb_mask_t sclp_send_mask;
 140         /* called if event type availability changes */
 141         void (*state_change_fn)(struct sclp_register *);
 142         /* called for events in cp_receive_mask/sclp_receive_mask */
 143         void (*receiver_fn)(struct evbuf_header *);
 144         /* called for power management events */
 145         void (*pm_event_fn)(struct sclp_register *, enum sclp_pm_event);
 146         /* pm event posted flag */
 147         int pm_event_posted;
 148 };
 149
 150 /* externals from sclp.c */
 151 int sclp_add_request(struct sclp_req *req);
 152 void sclp_sync_wait(void);
 153 int sclp_register(struct sclp_register *reg);
 154 void sclp_unregister(struct sclp_register *reg);
 155 int sclp_remove_processed(struct sccb_header *sccb);
 156 int sclp_deactivate(void);
 157 int sclp_reactivate(void);
 158 int sclp_service_call(sclp_cmdw_t command, void *sccb);
 159
 160 int sclp_sdias_init(void);
 161 void sclp_sdias_exit(void);
 162
 163 /* useful inlines */
 164
 165 /* VM uses EBCDIC 037, LPAR+native(SE+HMC) use EBCDIC 500 */
 166 /* translate single character from ASCII to EBCDIC */
 167 static inline unsigned char
 168 sclp_ascebc(unsigned char ch)
 169 {
 170         return (MACHINE_IS_VM) ? _ascebc[ch] : _ascebc_500[ch];
 171 }
 172
 173 /* translate string from EBCDIC to ASCII */
 174 static inline void
 175 sclp_ebcasc_str(unsigned char *str, int nr)
 176 {
 177         (MACHINE_IS_VM) ? EBCASC(str, nr) : EBCASC_500(str, nr);
 178 }
 179
 180 /* translate string from ASCII to EBCDIC */
 181 static inline void
 182 sclp_ascebc_str(unsigned char *str, int nr)
 183 {
 184         (MACHINE_IS_VM) ? ASCEBC(str, nr) : ASCEBC_500(str, nr);
 185 }
 186
 187 #endif   /* __SCLP_H__ */