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authorHeiko Carstens <heiko.carstens@de.ibm.com>2008-12-25 13:38:40 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-12-25 13:38:56 +0100
commit320c04c068c62b71fe9ea55e06e4968b4edc9e48 (patch)
tree8f98e0d681ecbc4141552289bb676c8f4ae8109a /arch/s390/include
parentca9fc75a68ee98812bb6d212405fea039421910b (diff)
[S390] Move stfle to header file.
stfle will be needed by the ap_bus module to figure out wether the AP queue adapter interruption facility is installed. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
-rw-r--r--arch/s390/include/asm/system.h20
1 files changed, 18 insertions, 2 deletions
diff --git a/arch/s390/include/asm/system.h b/arch/s390/include/asm/system.h
index 819e7d99ca0..c17a3cfbe24 100644
--- a/arch/s390/include/asm/system.h
+++ b/arch/s390/include/asm/system.h
@@ -12,6 +12,7 @@
#define __ASM_SYSTEM_H
#include <linux/kernel.h>
+#include <linux/errno.h>
#include <asm/types.h>
#include <asm/ptrace.h>
#include <asm/setup.h>
@@ -413,8 +414,6 @@ __set_psw_mask(unsigned long mask)
#define local_mcck_enable() __set_psw_mask(psw_kernel_bits)
#define local_mcck_disable() __set_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK)
-int stfle(unsigned long long *list, int doublewords);
-
#ifdef CONFIG_SMP
extern void smp_ctl_set_bit(int cr, int bit);
@@ -438,6 +437,23 @@ static inline unsigned int stfl(void)
return S390_lowcore.stfl_fac_list;
}
+static inline int __stfle(unsigned long long *list, int doublewords)
+{
+ typedef struct { unsigned long long _[doublewords]; } addrtype;
+ register unsigned long __nr asm("0") = doublewords - 1;
+
+ asm volatile(".insn s,0xb2b00000,%0" /* stfle */
+ : "=m" (*(addrtype *) list), "+d" (__nr) : : "cc");
+ return __nr + 1;
+}
+
+static inline int stfle(unsigned long long *list, int doublewords)
+{
+ if (!(stfl() & (1UL << 24)))
+ return -EOPNOTSUPP;
+ return __stfle(list, doublewords);
+}
+
static inline unsigned short stap(void)
{
unsigned short cpu_address;