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s390: Make diag224 public

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Diag204's cpu structures only contain the cpu type by means of an
index in the diag224 name table. Hence, to be able to use diag204 in
any meaningful way, we also need a usable diag224 interface.

Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Janosch Frank 2016-02-12 12:52:49 +01:00 committed by Christian Borntraeger
parent e435dc3139
commit 022bd2d11c
3 changed files with 16 additions and 14 deletions
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14
arch/s390/hypfs/hypfs_diag.c
View File

@ -360,20 +360,6 @@ out:
/* Diagnose 224 functions */
static int diag224(void *ptr)
{
int rc = -EOPNOTSUPP;
diag_stat_inc(DIAG_STAT_X224);
asm volatile(
" diag %1,%2,0x224\n"
"0: lhi %0,0x0\n"
"1:\n"
EX_TABLE(0b,1b)
: "+d" (rc) :"d" (0), "d" (ptr) : "memory");
return rc;
}
static int diag224_get_name_table(void)
{
/* memory must be below 2GB */

1
arch/s390/include/asm/diag.h
View File

@ -205,4 +205,5 @@ struct diag204_x_phys_cpu {
} __packed;
int diag204(unsigned long subcode, unsigned long size, void *addr);
int diag224(void *ptr);
#endif /* _ASM_S390_DIAG_H */

15
arch/s390/kernel/diag.c
View File

@ -218,3 +218,18 @@ int diag210(struct diag210 *addr)
return ccode;
}
EXPORT_SYMBOL(diag210);
int diag224(void *ptr)
{
int rc = -EOPNOTSUPP;
diag_stat_inc(DIAG_STAT_X224);
asm volatile(
" diag %1,%2,0x224\n"
"0: lhi %0,0x0\n"
"1:\n"
EX_TABLE(0b,1b)
: "+d" (rc) :"d" (0), "d" (ptr) : "memory");
return rc;
}
EXPORT_SYMBOL(diag224);