Patchwork [kvm-unit-tests,v5,01/11] s390x: Add Sigp header file

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Submitter Janosch Frank
Date Jan. 10, 2019, 3:41 p.m.
Message ID <20190110154151.24233-2-frankja@linux.ibm.com>
Download mbox | patch
Permalink /patch/696923/
State New
Headers show

Comments

Janosch Frank - Jan. 10, 2019, 3:41 p.m.
The magic numbers for SIGP are not nice to read, so let's put them in
a new header file. Also move sigp_stop() there, it will later be
joined by more sigp functions and definitions.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
---
 lib/s390x/asm/sigp.h | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 lib/s390x/io.c       | 11 +---------
 2 files changed, 61 insertions(+), 10 deletions(-)
 create mode 100644 lib/s390x/asm/sigp.h
Thomas Huth - Jan. 11, 2019, 8:59 a.m.
On 2019-01-10 16:41, Janosch Frank wrote:
> The magic numbers for SIGP are not nice to read, so let's put them in
> a new header file. Also move sigp_stop() there, it will later be
> joined by more sigp functions and definitions.
> 
> Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
> Reviewed-by: David Hildenbrand <david@redhat.com>
> ---
>  lib/s390x/asm/sigp.h | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>  lib/s390x/io.c       | 11 +---------
>  2 files changed, 61 insertions(+), 10 deletions(-)
>  create mode 100644 lib/s390x/asm/sigp.h

Reviewed-by: Thomas Huth <thuth@redhat.com>

Patch

diff --git a/lib/s390x/asm/sigp.h b/lib/s390x/asm/sigp.h
new file mode 100644
index 0000000..899a66b
--- /dev/null
+++ b/lib/s390x/asm/sigp.h
@@ -0,0 +1,60 @@ 
+/*
+ * SIGP related definitions.
+ *
+ * Copied from the Linux kernel file arch/s390/include/asm/sigp.h
+ *
+ * This work is licensed under the terms of the GNU GPL, version
+ * 2. See the COPYING file in the top-level directory.
+ */
+
+#ifndef _ASM_S390X_SIGP_H_
+#define _ASM_S390X_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 __ASSEMBLER__
+
+static inline void sigp_stop(void)
+{
+	register unsigned long status asm ("1") = 0;
+	register unsigned long cpu asm ("2") = 0;
+
+	asm volatile(
+		"	sigp %0,%1,0(%2)\n"
+		: "+d" (status)  : "d" (cpu), "d" (SIGP_STOP) : "cc");
+}
+
+#endif /* __ASSEMBLER__ */
+#endif /* _ASM_S390X_SIGP_H_ */
diff --git a/lib/s390x/io.c b/lib/s390x/io.c
index 7bca637..fd33623 100644
--- a/lib/s390x/io.c
+++ b/lib/s390x/io.c
@@ -14,6 +14,7 @@ 
 #include <argv.h>
 #include <asm/spinlock.h>
 #include <asm/facility.h>
+#include <asm/sigp.h>
 #include "sclp.h"
 
 extern char ipl_args[];
@@ -30,16 +31,6 @@  void puts(const char *s)
 	spin_unlock(&lock);
 }
 
-static void sigp_stop(void)
-{
-	register unsigned long status asm ("1") = 0;
-	register unsigned long cpu asm ("2") = 0;
-
-	asm volatile(
-		"	sigp %0,%1,0(%2)\n"
-		: "+d" (status)  : "d" (cpu), "d" (5) : "cc");
-}
-
 void setup(void)
 {
 	setup_args_progname(ipl_args);