1 // SPDX-License-Identifier: GPL-2.0
3 * Channel subsystem I/O instructions.
6 #include <linux/export.h>
16 static inline int __stsch(struct subchannel_id schid, struct schib *addr)
18 register struct subchannel_id reg1 asm ("1") = schid;
27 : "+d" (ccode), "=m" (*addr)
28 : "d" (reg1), "a" (addr)
33 int stsch(struct subchannel_id schid, struct schib *addr)
37 ccode = __stsch(schid, addr);
38 trace_s390_cio_stsch(schid, addr, ccode);
44 static inline int __msch(struct subchannel_id schid, struct schib *addr)
46 register struct subchannel_id reg1 asm ("1") = schid;
56 : "d" (reg1), "a" (addr), "m" (*addr)
61 int msch(struct subchannel_id schid, struct schib *addr)
65 ccode = __msch(schid, addr);
66 trace_s390_cio_msch(schid, addr, ccode);
71 static inline int __tsch(struct subchannel_id schid, struct irb *addr)
73 register struct subchannel_id reg1 asm ("1") = schid;
80 : "=d" (ccode), "=m" (*addr)
81 : "d" (reg1), "a" (addr)
86 int tsch(struct subchannel_id schid, struct irb *addr)
90 ccode = __tsch(schid, addr);
91 trace_s390_cio_tsch(schid, addr, ccode);
96 static inline int __ssch(struct subchannel_id schid, union orb *addr)
98 register struct subchannel_id reg1 asm("1") = schid;
108 : "d" (reg1), "a" (addr), "m" (*addr)
113 int ssch(struct subchannel_id schid, union orb *addr)
117 ccode = __ssch(schid, addr);
118 trace_s390_cio_ssch(schid, addr, ccode);
124 static inline int __csch(struct subchannel_id schid)
126 register struct subchannel_id reg1 asm("1") = schid;
139 int csch(struct subchannel_id schid)
143 ccode = __csch(schid);
144 trace_s390_cio_csch(schid, ccode);
150 int tpi(struct tpi_info *addr)
158 : "=d" (ccode), "=m" (*addr)
161 trace_s390_cio_tpi(addr, ccode);
166 int chsc(void *chsc_area)
168 typedef struct { char _[4096]; } addr_type;
172 " .insn rre,0xb25f0000,%2,0\n"
177 : "+d" (cc), "=m" (*(addr_type *) chsc_area)
178 : "d" (chsc_area), "m" (*(addr_type *) chsc_area)
180 trace_s390_cio_chsc(chsc_area, cc);
186 static inline int __rsch(struct subchannel_id schid)
188 register struct subchannel_id reg1 asm("1") = schid;
202 int rsch(struct subchannel_id schid)
206 ccode = __rsch(schid);
207 trace_s390_cio_rsch(schid, ccode);
212 static inline int __hsch(struct subchannel_id schid)
214 register struct subchannel_id reg1 asm("1") = schid;
227 int hsch(struct subchannel_id schid)
231 ccode = __hsch(schid);
232 trace_s390_cio_hsch(schid, ccode);
237 static inline int __xsch(struct subchannel_id schid)
239 register struct subchannel_id reg1 asm("1") = schid;
252 int xsch(struct subchannel_id schid)
256 ccode = __xsch(schid);
257 trace_s390_cio_xsch(schid, ccode);
262 int stcrw(struct crw *crw)
270 : "=d" (ccode), "=m" (*crw)
273 trace_s390_cio_stcrw(crw, ccode);