arch/s390/include/asm/stp.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *  Copyright IBM Corp. 2006
   4  *  Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
   5  */
   6 #ifndef __S390_STP_H
   7 #define __S390_STP_H
   8
   9 /* notifier for syncs */
  10 extern struct atomic_notifier_head s390_epoch_delta_notifier;
  11
  12 /* STP interruption parameter */
  13 struct stp_irq_parm {
  14         unsigned int _pad0      : 14;
  15         unsigned int tsc        : 1;    /* Timing status change */
  16         unsigned int lac        : 1;    /* Link availability change */
  17         unsigned int tcpc       : 1;    /* Time control parameter change */
  18         unsigned int _pad2      : 15;
  19 } __attribute__ ((packed));
  20
  21 #define STP_OP_SYNC     1
  22 #define STP_OP_CTRL     3
  23
  24 struct stp_sstpi {
  25         unsigned int rsvd0;
  26         unsigned int rsvd1 : 8;
  27         unsigned int stratum : 8;
  28         unsigned int vbits : 16;
  29         unsigned int leaps : 16;
  30         unsigned int tmd : 4;
  31         unsigned int ctn : 4;
  32         unsigned int rsvd2 : 3;
  33         unsigned int c : 1;
  34         unsigned int tst : 4;
  35         unsigned int tzo : 16;
  36         unsigned int dsto : 16;
  37         unsigned int ctrl : 16;
  38         unsigned int rsvd3 : 16;
  39         unsigned int tto;
  40         unsigned int rsvd4;
  41         unsigned int ctnid[3];
  42         unsigned int rsvd5;
  43         unsigned int todoff[4];
  44         unsigned int rsvd6[48];
  45 } __attribute__ ((packed));
  46
  47 /* Functions needed by the machine check handler */
  48 int stp_sync_check(void);
  49 int stp_island_check(void);
  50 void stp_queue_work(void);
  51
  52 #endif /* __S390_STP_H */