Kernel/linux-next
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git synced 2024-12-28 16:52:18 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

s390/cio/ioasm: Convert to use flag output macros

Browse Source 
Use flag output macros in inline asm to allow for better code generation if
the compiler has support for the flag output constraint.

Reviewed-by: Juergen Christ <jchrist@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2024-11-07 16:11:53 +01:00
parent f62ad9073a
commit e200565d43
1 changed files with 54 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

107
drivers/s390/cio/ioasm.c
View File

@ -8,6 +8,7 @@
#include <asm/asm-extable.h>
#include <asm/chpid.h>
#include <asm/schid.h>
#include <asm/asm.h>
#include <asm/crw.h>
#include "ioasm.h"
@ -18,19 +19,20 @@
static inline int __stsch(struct subchannel_id schid, struct schib *addr)
{
unsigned long r1 = *(unsigned int *)&schid;
int ccode = -EIO;
int ccode, exception;
exception = 1;
asm volatile(
" lgr 1,%[r1]\n"
" stsch %[addr]\n"
"0: ipm %[cc]\n"
" srl %[cc],28\n"
"0: lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
EX_TABLE(0b, 1b)
: [cc] "+&d" (ccode), [addr] "=Q" (*addr)
: CC_OUT(cc, ccode), [addr] "=Q" (*addr), [exc] "+d" (exception)
: [r1] "d" (r1)
: "cc", "1");
return ccode;
: CC_CLOBBER_LIST("1"));
return exception ? -EIO : CC_TRANSFORM(ccode);
}
int stsch(struct subchannel_id schid, struct schib *addr)
@ -47,19 +49,20 @@ EXPORT_SYMBOL(stsch);
static inline int __msch(struct subchannel_id schid, struct schib *addr)
{
unsigned long r1 = *(unsigned int *)&schid;
int ccode = -EIO;
int ccode, exception;
exception = 1;
asm volatile(
" lgr 1,%[r1]\n"
" msch %[addr]\n"
"0: ipm %[cc]\n"
" srl %[cc],28\n"
"0: lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
EX_TABLE(0b, 1b)
: [cc] "+&d" (ccode)
: CC_OUT(cc, ccode), [exc] "+d" (exception)
: [r1] "d" (r1), [addr] "Q" (*addr)
: "cc", "1");
return ccode;
: CC_CLOBBER_LIST("1"));
return exception ? -EIO : CC_TRANSFORM(ccode);
}
int msch(struct subchannel_id schid, struct schib *addr)
@ -80,12 +83,11 @@ static inline int __tsch(struct subchannel_id schid, struct irb *addr)
asm volatile(
" lgr 1,%[r1]\n"
" tsch %[addr]\n"
" ipm %[cc]\n"
" srl %[cc],28"
: [cc] "=&d" (ccode), [addr] "=Q" (*addr)
CC_IPM(cc)
: CC_OUT(cc, ccode), [addr] "=Q" (*addr)
: [r1] "d" (r1)
: "cc", "1");
return ccode;
: CC_CLOBBER_LIST("1"));
return CC_TRANSFORM(ccode);
}
int tsch(struct subchannel_id schid, struct irb *addr)
@ -101,19 +103,20 @@ int tsch(struct subchannel_id schid, struct irb *addr)
static inline int __ssch(struct subchannel_id schid, union orb *addr)
{
unsigned long r1 = *(unsigned int *)&schid;
int ccode = -EIO;
int ccode, exception;
exception = 1;
asm volatile(
" lgr 1,%[r1]\n"
" ssch %[addr]\n"
"0: ipm %[cc]\n"
" srl %[cc],28\n"
"0: lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
EX_TABLE(0b, 1b)
: [cc] "+&d" (ccode)
: CC_OUT(cc, ccode), [exc] "+d" (exception)
: [r1] "d" (r1), [addr] "Q" (*addr)
: "cc", "memory", "1");
return ccode;
: CC_CLOBBER_LIST("memory", "1"));
return CC_TRANSFORM(ccode);
}
int ssch(struct subchannel_id schid, union orb *addr)
@ -135,12 +138,11 @@ static inline int __csch(struct subchannel_id schid)
asm volatile(
" lgr 1,%[r1]\n"
" csch\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=&d" (ccode)
CC_IPM(cc)
: CC_OUT(cc, ccode)
: [r1] "d" (r1)
: "cc", "1");
return ccode;
: CC_CLOBBER_LIST("1"));
return CC_TRANSFORM(ccode);
}
int csch(struct subchannel_id schid)
@ -160,11 +162,11 @@ int tpi(struct tpi_info *addr)
asm volatile(
" tpi %[addr]\n"
" ipm %[cc]\n"
" srl %[cc],28"
: [cc] "=&d" (ccode), [addr] "=Q" (*addr)
CC_IPM(cc)
: CC_OUT(cc, ccode), [addr] "=Q" (*addr)
:
: "cc");
: CC_CLOBBER);
ccode = CC_TRANSFORM(ccode);
trace_s390_cio_tpi(addr, ccode);
return ccode;
@ -173,17 +175,19 @@ int tpi(struct tpi_info *addr)
int chsc(void *chsc_area)
{
typedef struct { char _[4096]; } addr_type;
int cc = -EIO;
int cc, exception;
exception = 1;
asm volatile(
" .insn rre,0xb25f0000,%[chsc_area],0\n"
"0: ipm %[cc]\n"
" srl %[cc],28\n"
"0: lhi %[exc],0\n"
"1:\n"
CC_IPM(cc)
EX_TABLE(0b, 1b)
: [cc] "+&d" (cc), "+m" (*(addr_type *)chsc_area)
: CC_OUT(cc, cc), "+m" (*(addr_type *)chsc_area), [exc] "+d" (exception)
: [chsc_area] "d" (chsc_area)
: "cc");
: CC_CLOBBER);
cc = exception ? -EIO : CC_TRANSFORM(cc);
trace_s390_cio_chsc(chsc_area, cc);
return cc;
@ -198,12 +202,11 @@ static inline int __rsch(struct subchannel_id schid)
asm volatile(
" lgr 1,%[r1]\n"
" rsch\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=&d" (ccode)
CC_IPM(cc)
: CC_OUT(cc, ccode)
: [r1] "d" (r1)
: "cc", "memory", "1");
return ccode;
: CC_CLOBBER_LIST("memory", "1"));
return CC_TRANSFORM(ccode);
}
int rsch(struct subchannel_id schid)
@ -224,12 +227,11 @@ static inline int __hsch(struct subchannel_id schid)
asm volatile(
" lgr 1,%[r1]\n"
" hsch\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=&d" (ccode)
CC_IPM(cc)
: CC_OUT(cc, ccode)
: [r1] "d" (r1)
: "cc", "1");
return ccode;
: CC_CLOBBER_LIST("1"));
return CC_TRANSFORM(ccode);
}
int hsch(struct subchannel_id schid)
@ -256,7 +258,7 @@ static inline int __xsch(struct subchannel_id schid)
: [cc] "=&d" (ccode)
: [r1] "d" (r1)
: "cc", "1");
return ccode;
return CC_TRANSFORM(ccode);
}
int xsch(struct subchannel_id schid)
@ -275,12 +277,11 @@ static inline int __stcrw(struct crw *crw)
asm volatile(
" stcrw %[crw]\n"
" ipm %[cc]\n"
" srl %[cc],28\n"
: [cc] "=&d" (ccode), [crw] "=Q" (*crw)
CC_IPM(cc)
: CC_OUT(cc, ccode), [crw] "=Q" (*crw)
:
: "cc");
return ccode;
: CC_CLOBBER);
return CC_TRANSFORM(ccode);
}
static inline int _stcrw(struct crw *crw)