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-rw-r--r--arch/s390/include/asm/stp.h98
1 files changed, 98 insertions, 0 deletions
diff --git a/arch/s390/include/asm/stp.h b/arch/s390/include/asm/stp.h
new file mode 100644
index 0000000000..4d74d7e333
--- /dev/null
+++ b/arch/s390/include/asm/stp.h
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright IBM Corp. 2006
+ * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
+ */
+#ifndef __S390_STP_H
+#define __S390_STP_H
+
+#include <linux/compiler.h>
+
+/* notifier for syncs */
+extern struct atomic_notifier_head s390_epoch_delta_notifier;
+
+/* STP interruption parameter */
+struct stp_irq_parm {
+ u32 : 14;
+ u32 tsc : 1; /* Timing status change */
+ u32 lac : 1; /* Link availability change */
+ u32 tcpc : 1; /* Time control parameter change */
+ u32 : 15;
+} __packed;
+
+#define STP_OP_SYNC 1
+#define STP_OP_CTRL 3
+
+struct stp_sstpi {
+ u32 : 32;
+ u32 tu : 1;
+ u32 lu : 1;
+ u32 : 6;
+ u32 stratum : 8;
+ u32 vbits : 16;
+ u32 leaps : 16;
+ u32 tmd : 4;
+ u32 ctn : 4;
+ u32 : 3;
+ u32 c : 1;
+ u32 tst : 4;
+ u32 tzo : 16;
+ u32 dsto : 16;
+ u32 ctrl : 16;
+ u32 : 16;
+ u32 tto;
+ u32 : 32;
+ u32 ctnid[3];
+ u32 : 32;
+ u64 todoff;
+ u32 rsvd[50];
+} __packed;
+
+struct stp_tzib {
+ u32 tzan : 16;
+ u32 : 16;
+ u32 tzo : 16;
+ u32 dsto : 16;
+ u32 stn;
+ u32 dstn;
+ u64 dst_on_alg;
+ u64 dst_off_alg;
+} __packed;
+
+struct stp_tcpib {
+ u32 atcode : 4;
+ u32 ntcode : 4;
+ u32 d : 1;
+ u32 : 23;
+ s32 tto;
+ struct stp_tzib atzib;
+ struct stp_tzib ntzib;
+ s32 adst_offset : 16;
+ s32 ndst_offset : 16;
+ u32 rsvd1;
+ u64 ntzib_update;
+ u64 ndsto_update;
+} __packed;
+
+struct stp_lsoib {
+ u32 p : 1;
+ u32 : 31;
+ s32 also : 16;
+ s32 nlso : 16;
+ u64 nlsout;
+} __packed;
+
+struct stp_stzi {
+ u32 rsvd0[3];
+ u64 data_ts;
+ u32 rsvd1[22];
+ struct stp_tcpib tcpib;
+ struct stp_lsoib lsoib;
+} __packed;
+
+/* Functions needed by the machine check handler */
+int stp_sync_check(void);
+int stp_island_check(void);
+void stp_queue_work(void);
+
+#endif /* __S390_STP_H */