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#ifndef S390_CIO_IOASM_H
#define S390_CIO_IOASM_H
#include <asm/chpid.h>
#include "schid.h"
/*
* TPI info structure
*/
struct tpi_info {
struct subchannel_id schid;
__u32 intparm; /* interruption parameter */
__u32 adapter_IO : 1;
__u32 reserved2 : 1;
__u32 isc : 3;
__u32 reserved3 : 12;
__u32 int_type : 3;
__u32 reserved4 : 12;
} __attribute__ ((packed));
/*
* Some S390 specific IO instructions as inline
*/
static inline int stsch(struct subchannel_id schid,
volatile struct schib *addr)
{
register struct subchannel_id reg1 asm ("1") = schid;
int ccode;
asm volatile(
" stsch 0(%2)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
return ccode;
}
static inline int stsch_err(struct subchannel_id schid,
volatile struct schib *addr)
{
register struct subchannel_id reg1 asm ("1") = schid;
int ccode = -EIO;
asm volatile(
" stsch 0(%2)\n"
"0: ipm %0\n"
" srl %0,28\n"
"1:\n"
EX_TABLE(0b,1b)
: "+d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
return ccode;
}
static inline int msch(struct subchannel_id schid,
volatile struct schib *addr)
{
register struct subchannel_id reg1 asm ("1") = schid;
int ccode;
asm volatile(
" msch 0(%2)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
return ccode;
}
static inline int msch_err(struct subchannel_id schid,
volatile struct schib *addr)
{
register struct subchannel_id reg1 asm ("1") = schid;
int ccode = -EIO;
asm volatile(
" msch 0(%2)\n"
"0: ipm %0\n"
" srl %0,28\n"
"1:\n"
EX_TABLE(0b,1b)
: "+d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
return ccode;
}
static inline int tsch(struct subchannel_id schid,
volatile struct irb *addr)
{
register struct subchannel_id reg1 asm ("1") = schid;
int ccode;
asm volatile(
" tsch 0(%2)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc");
return ccode;
}
static inline int tpi( volatile struct tpi_info *addr)
{
int ccode;
asm volatile(
" tpi 0(%1)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "a" (addr), "m" (*addr) : "cc");
return ccode;
}
static inline int chsc(void *chsc_area)
{
typedef struct { char _[4096]; } addr_type;
int cc;
asm volatile(
" .insn rre,0xb25f0000,%2,0\n"
" ipm %0\n"
" srl %0,28\n"
: "=d" (cc), "=m" (*(addr_type *) chsc_area)
: "d" (chsc_area), "m" (*(addr_type *) chsc_area)
: "cc");
return cc;
}
static inline int rchp(struct chp_id chpid)
{
register struct chp_id reg1 asm ("1") = chpid;
int ccode;
asm volatile(
" lr 1,%1\n"
" rchp\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : "d" (reg1) : "cc");
return ccode;
}
#endif
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