summaryrefslogtreecommitdiffstats
path: root/arch/s390/include/asm/sigp.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/include/asm/sigp.h')
-rw-r--r--arch/s390/include/asm/sigp.h72
1 files changed, 72 insertions, 0 deletions
diff --git a/arch/s390/include/asm/sigp.h b/arch/s390/include/asm/sigp.h
new file mode 100644
index 0000000000..edee63da08
--- /dev/null
+++ b/arch/s390/include/asm/sigp.h
@@ -0,0 +1,72 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __S390_ASM_SIGP_H
+#define __S390_ASM_SIGP_H
+
+/* SIGP order codes */
+#define SIGP_SENSE 1
+#define SIGP_EXTERNAL_CALL 2
+#define SIGP_EMERGENCY_SIGNAL 3
+#define SIGP_START 4
+#define SIGP_STOP 5
+#define SIGP_RESTART 6
+#define SIGP_STOP_AND_STORE_STATUS 9
+#define SIGP_INITIAL_CPU_RESET 11
+#define SIGP_CPU_RESET 12
+#define SIGP_SET_PREFIX 13
+#define SIGP_STORE_STATUS_AT_ADDRESS 14
+#define SIGP_SET_ARCHITECTURE 18
+#define SIGP_COND_EMERGENCY_SIGNAL 19
+#define SIGP_SENSE_RUNNING 21
+#define SIGP_SET_MULTI_THREADING 22
+#define SIGP_STORE_ADDITIONAL_STATUS 23
+
+/* SIGP condition codes */
+#define SIGP_CC_ORDER_CODE_ACCEPTED 0
+#define SIGP_CC_STATUS_STORED 1
+#define SIGP_CC_BUSY 2
+#define SIGP_CC_NOT_OPERATIONAL 3
+
+/* SIGP cpu status bits */
+
+#define SIGP_STATUS_INVALID_ORDER 0x00000002UL
+#define SIGP_STATUS_CHECK_STOP 0x00000010UL
+#define SIGP_STATUS_STOPPED 0x00000040UL
+#define SIGP_STATUS_EXT_CALL_PENDING 0x00000080UL
+#define SIGP_STATUS_INVALID_PARAMETER 0x00000100UL
+#define SIGP_STATUS_INCORRECT_STATE 0x00000200UL
+#define SIGP_STATUS_NOT_RUNNING 0x00000400UL
+
+#ifndef __ASSEMBLY__
+
+static inline int ____pcpu_sigp(u16 addr, u8 order, unsigned long parm,
+ u32 *status)
+{
+ union register_pair r1 = { .odd = parm, };
+ int cc;
+
+ asm volatile(
+ " sigp %[r1],%[addr],0(%[order])\n"
+ " ipm %[cc]\n"
+ " srl %[cc],28\n"
+ : [cc] "=&d" (cc), [r1] "+&d" (r1.pair)
+ : [addr] "d" (addr), [order] "a" (order)
+ : "cc");
+ *status = r1.even;
+ return cc;
+}
+
+static inline int __pcpu_sigp(u16 addr, u8 order, unsigned long parm,
+ u32 *status)
+{
+ u32 _status;
+ int cc;
+
+ cc = ____pcpu_sigp(addr, order, parm, &_status);
+ if (status && cc == SIGP_CC_STATUS_STORED)
+ *status = _status;
+ return cc;
+}
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* __S390_ASM_SIGP_H */