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#ifndef S390_CIO_IOASM_H
#define S390_CIO_IOASM_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)
{
int ccode;
__asm__ __volatile__(
" lr 1,%1\n"
" stsch 0(%2)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode)
: "d" (schid), "a" (addr), "m" (*addr)
: "cc", "1" );
return ccode;
}
static inline int stsch_err(struct subchannel_id schid,
volatile struct schib *addr)
{
int ccode;
__asm__ __volatile__(
" lhi %0,%3\n"
" lr 1,%1\n"
" stsch 0(%2)\n"
"0: ipm %0\n"
" srl %0,28\n"
"1:\n"
#ifdef CONFIG_ARCH_S390X
".section __ex_table,\"a\"\n"
" .align 8\n"
" .quad 0b,1b\n"
".previous"
#else
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 0b,1b\n"
".previous"
#endif
: "=&d" (ccode)
: "d" (schid), "a" (addr), "K" (-EIO), "m" (*addr)
: "cc", "1" );
return ccode;
}
static inline int msch(struct subchannel_id schid,
volatile struct schib *addr)
{
int ccode;
__asm__ __volatile__(
" lr 1,%1\n"
" msch 0(%2)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode)
: "d" (schid), "a" (addr), "m" (*addr)
: "cc", "1" );
return ccode;
}
static inline int msch_err(struct subchannel_id schid,
volatile struct schib *addr)
{
int ccode;
__asm__ __volatile__(
" lhi %0,%3\n"
" lr 1,%1\n"
" msch 0(%2)\n"
"0: ipm %0\n"
" srl %0,28\n"
"1:\n"
#ifdef CONFIG_ARCH_S390X
".section __ex_table,\"a\"\n"
" .align 8\n"
" .quad 0b,1b\n"
".previous"
#else
".section __ex_table,\"a\"\n"
" .align 4\n"
" .long 0b,1b\n"
".previous"
#endif
: "=&d" (ccode)
: "d" (schid), "a" (addr), "K" (-EIO), "m" (*addr)
: "cc", "1" );
return ccode;
}
static inline int tsch(struct subchannel_id schid,
volatile struct irb *addr)
{
int ccode;
__asm__ __volatile__(
" lr 1,%1\n"
" tsch 0(%2)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode)
: "d" (schid), "a" (addr), "m" (*addr)
: "cc", "1" );
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", "1" );
return ccode;
}
static inline int ssch(struct subchannel_id schid,
volatile struct orb *addr)
{
int ccode;
__asm__ __volatile__(
" lr 1,%1\n"
" ssch 0(%2)\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode)
: "d" (schid), "a" (addr), "m" (*addr)
: "cc", "1" );
return ccode;
}
static inline int rsch(struct subchannel_id schid)
{
int ccode;
__asm__ __volatile__(
" lr 1,%1\n"
" rsch\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode)
: "d" (schid)
: "cc", "1" );
return ccode;
}
static inline int csch(struct subchannel_id schid)
{
int ccode;
__asm__ __volatile__(
" lr 1,%1\n"
" csch\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode)
: "d" (schid)
: "cc", "1" );
return ccode;
}
static inline int hsch(struct subchannel_id schid)
{
int ccode;
__asm__ __volatile__(
" lr 1,%1\n"
" hsch\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode)
: "d" (schid)
: "cc", "1" );
return ccode;
}
static inline int xsch(struct subchannel_id schid)
{
int ccode;
__asm__ __volatile__(
" lr 1,%1\n"
" .insn rre,0xb2760000,%1,0\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode)
: "d" (schid)
: "cc", "1" );
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\t"
"ipm %0 \n\t"
"srl %0,28 \n\t"
: "=d" (cc), "=m" (*(addr_type *) chsc_area)
: "d" (chsc_area), "m" (*(addr_type *) chsc_area)
: "cc" );
return cc;
}
static inline int iac( void)
{
int ccode;
__asm__ __volatile__(
" iac 1\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode) : : "cc", "1" );
return ccode;
}
static inline int rchp(int chpid)
{
int ccode;
__asm__ __volatile__(
" lr 1,%1\n"
" rchp\n"
" ipm %0\n"
" srl %0,28"
: "=d" (ccode)
: "d" (chpid)
: "cc", "1" );
return ccode;
}
#endif
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