Merge branch 'linus' into sched/urgent

1 files changed, 126 insertions, 0 deletions

diff --git a/arch/s390/include/asm/sigp.h b/arch/s390/include/asm/sigp.h
new file mode 100644
index 00000000000..e16d56f8dfe
--- /dev/null
+++ b/arch/s390/include/asm/sigp.h
@@ -0,0 +1,126 @@
+/*
+ *  include/asm-s390/sigp.h
+ *
+ *  S390 version
+ *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
+ *               Martin Schwidefsky (schwidefsky@de.ibm.com)
+ *               Heiko Carstens (heiko.carstens@de.ibm.com)
+ *
+ *  sigp.h by D.J. Barrow (c) IBM 1999
+ *  contains routines / structures for signalling other S/390 processors in an
+ *  SMP configuration.
+ */
+
+#ifndef __SIGP__
+#define __SIGP__
+
+#include <asm/ptrace.h>
+#include <asm/atomic.h>
+
+/* get real cpu address from logical cpu number */
+extern volatile int __cpu_logical_map[];
+
+typedef enum
+{
+	sigp_unassigned=0x0,
+	sigp_sense,
+	sigp_external_call,
+	sigp_emergency_signal,
+	sigp_start,
+	sigp_stop,
+	sigp_restart,
+	sigp_unassigned1,
+	sigp_unassigned2,
+	sigp_stop_and_store_status,
+	sigp_unassigned3,
+	sigp_initial_cpu_reset,
+	sigp_cpu_reset,
+	sigp_set_prefix,
+	sigp_store_status_at_address,
+	sigp_store_extended_status_at_address
+} sigp_order_code;
+
+typedef __u32 sigp_status_word;
+
+typedef enum
+{
+        sigp_order_code_accepted=0,
+	sigp_status_stored,
+	sigp_busy,
+	sigp_not_operational
+} sigp_ccode;
+
+
+/*
+ * Definitions for the external call
+ */
+
+/* 'Bit' signals, asynchronous */
+typedef enum
+{
+	ec_schedule=0,
+	ec_call_function,
+	ec_bit_last
+} ec_bit_sig;
+
+/*
+ * Signal processor
+ */
+static inline sigp_ccode
+signal_processor(__u16 cpu_addr, sigp_order_code order_code)
+{
+	register unsigned long reg1 asm ("1") = 0;
+	sigp_ccode ccode;
+
+	asm volatile(
+		"	sigp	%1,%2,0(%3)\n"
+		"	ipm	%0\n"
+		"	srl	%0,28\n"
+		:	"=d"	(ccode)
+		: "d" (reg1), "d" (__cpu_logical_map[cpu_addr]),
+		  "a" (order_code) : "cc" , "memory");
+	return ccode;
+}
+
+/*
+ * Signal processor with parameter
+ */
+static inline sigp_ccode
+signal_processor_p(__u32 parameter, __u16 cpu_addr, sigp_order_code order_code)
+{
+	register unsigned int reg1 asm ("1") = parameter;
+	sigp_ccode ccode;
+
+	asm volatile(
+		"	sigp	%1,%2,0(%3)\n"
+		"	ipm	%0\n"
+		"	srl	%0,28\n"
+		: "=d" (ccode)
+		: "d" (reg1), "d" (__cpu_logical_map[cpu_addr]),
+		  "a" (order_code) : "cc" , "memory");
+	return ccode;
+}
+
+/*
+ * Signal processor with parameter and return status
+ */
+static inline sigp_ccode
+signal_processor_ps(__u32 *statusptr, __u32 parameter, __u16 cpu_addr,
+		    sigp_order_code order_code)
+{
+	register unsigned int reg1 asm ("1") = parameter;
+	sigp_ccode ccode;
+
+	asm volatile(
+		"	sigp	%1,%2,0(%3)\n"
+		"	ipm	%0\n"
+		"	srl	%0,28\n"
+		: "=d" (ccode), "+d" (reg1)
+		: "d" (__cpu_logical_map[cpu_addr]), "a" (order_code)
+		: "cc" , "memory");
+	*statusptr = reg1;
+	return ccode;
+}
+
+#endif /* __SIGP__ */