1
2
3
4
5#include <linux/export.h>
6
7#include <asm/chpid.h>
8#include <asm/schid.h>
9#include <asm/crw.h>
10
11#include "ioasm.h"
12#include "orb.h"
13#include "cio.h"
14
15static inline int __stsch(struct subchannel_id schid, struct schib *addr)
16{
17 register struct subchannel_id reg1 asm ("1") = schid;
18 int ccode = -EIO;
19
20 asm volatile(
21 " stsch 0(%3)\n"
22 "0: ipm %0\n"
23 " srl %0,28\n"
24 "1:\n"
25 EX_TABLE(0b, 1b)
26 : "+d" (ccode), "=m" (*addr)
27 : "d" (reg1), "a" (addr)
28 : "cc");
29 return ccode;
30}
31
32int stsch(struct subchannel_id schid, struct schib *addr)
33{
34 int ccode;
35
36 ccode = __stsch(schid, addr);
37 trace_s390_cio_stsch(schid, addr, ccode);
38
39 return ccode;
40}
41EXPORT_SYMBOL(stsch);
42
43static inline int __msch(struct subchannel_id schid, struct schib *addr)
44{
45 register struct subchannel_id reg1 asm ("1") = schid;
46 int ccode = -EIO;
47
48 asm volatile(
49 " msch 0(%2)\n"
50 "0: ipm %0\n"
51 " srl %0,28\n"
52 "1:\n"
53 EX_TABLE(0b, 1b)
54 : "+d" (ccode)
55 : "d" (reg1), "a" (addr), "m" (*addr)
56 : "cc");
57 return ccode;
58}
59
60int msch(struct subchannel_id schid, struct schib *addr)
61{
62 int ccode;
63
64 ccode = __msch(schid, addr);
65 trace_s390_cio_msch(schid, addr, ccode);
66
67 return ccode;
68}
69
70static inline int __tsch(struct subchannel_id schid, struct irb *addr)
71{
72 register struct subchannel_id reg1 asm ("1") = schid;
73 int ccode;
74
75 asm volatile(
76 " tsch 0(%3)\n"
77 " ipm %0\n"
78 " srl %0,28"
79 : "=d" (ccode), "=m" (*addr)
80 : "d" (reg1), "a" (addr)
81 : "cc");
82 return ccode;
83}
84
85int tsch(struct subchannel_id schid, struct irb *addr)
86{
87 int ccode;
88
89 ccode = __tsch(schid, addr);
90 trace_s390_cio_tsch(schid, addr, ccode);
91
92 return ccode;
93}
94
95static inline int __ssch(struct subchannel_id schid, union orb *addr)
96{
97 register struct subchannel_id reg1 asm("1") = schid;
98 int ccode = -EIO;
99
100 asm volatile(
101 " ssch 0(%2)\n"
102 "0: ipm %0\n"
103 " srl %0,28\n"
104 "1:\n"
105 EX_TABLE(0b, 1b)
106 : "+d" (ccode)
107 : "d" (reg1), "a" (addr), "m" (*addr)
108 : "cc", "memory");
109 return ccode;
110}
111
112int ssch(struct subchannel_id schid, union orb *addr)
113{
114 int ccode;
115
116 ccode = __ssch(schid, addr);
117 trace_s390_cio_ssch(schid, addr, ccode);
118
119 return ccode;
120}
121EXPORT_SYMBOL(ssch);
122
123static inline int __csch(struct subchannel_id schid)
124{
125 register struct subchannel_id reg1 asm("1") = schid;
126 int ccode;
127
128 asm volatile(
129 " csch\n"
130 " ipm %0\n"
131 " srl %0,28"
132 : "=d" (ccode)
133 : "d" (reg1)
134 : "cc");
135 return ccode;
136}
137
138int csch(struct subchannel_id schid)
139{
140 int ccode;
141
142 ccode = __csch(schid);
143 trace_s390_cio_csch(schid, ccode);
144
145 return ccode;
146}
147EXPORT_SYMBOL(csch);
148
149int tpi(struct tpi_info *addr)
150{
151 int ccode;
152
153 asm volatile(
154 " tpi 0(%2)\n"
155 " ipm %0\n"
156 " srl %0,28"
157 : "=d" (ccode), "=m" (*addr)
158 : "a" (addr)
159 : "cc");
160 trace_s390_cio_tpi(addr, ccode);
161
162 return ccode;
163}
164
165int chsc(void *chsc_area)
166{
167 typedef struct { char _[4096]; } addr_type;
168 int cc = -EIO;
169
170 asm volatile(
171 " .insn rre,0xb25f0000,%2,0\n"
172 "0: ipm %0\n"
173 " srl %0,28\n"
174 "1:\n"
175 EX_TABLE(0b, 1b)
176 : "+d" (cc), "=m" (*(addr_type *) chsc_area)
177 : "d" (chsc_area), "m" (*(addr_type *) chsc_area)
178 : "cc");
179 trace_s390_cio_chsc(chsc_area, cc);
180
181 return cc;
182}
183EXPORT_SYMBOL(chsc);
184
185static inline int __rchp(struct chp_id chpid)
186{
187 register struct chp_id reg1 asm ("1") = chpid;
188 int ccode;
189
190 asm volatile(
191 " lr 1,%1\n"
192 " rchp\n"
193 " ipm %0\n"
194 " srl %0,28"
195 : "=d" (ccode) : "d" (reg1) : "cc");
196 return ccode;
197}
198
199int rchp(struct chp_id chpid)
200{
201 int ccode;
202
203 ccode = __rchp(chpid);
204 trace_s390_cio_rchp(chpid, ccode);
205
206 return ccode;
207}
208
209static inline int __rsch(struct subchannel_id schid)
210{
211 register struct subchannel_id reg1 asm("1") = schid;
212 int ccode;
213
214 asm volatile(
215 " rsch\n"
216 " ipm %0\n"
217 " srl %0,28"
218 : "=d" (ccode)
219 : "d" (reg1)
220 : "cc", "memory");
221
222 return ccode;
223}
224
225int rsch(struct subchannel_id schid)
226{
227 int ccode;
228
229 ccode = __rsch(schid);
230 trace_s390_cio_rsch(schid, ccode);
231
232 return ccode;
233}
234
235static inline int __hsch(struct subchannel_id schid)
236{
237 register struct subchannel_id reg1 asm("1") = schid;
238 int ccode;
239
240 asm volatile(
241 " hsch\n"
242 " ipm %0\n"
243 " srl %0,28"
244 : "=d" (ccode)
245 : "d" (reg1)
246 : "cc");
247 return ccode;
248}
249
250int hsch(struct subchannel_id schid)
251{
252 int ccode;
253
254 ccode = __hsch(schid);
255 trace_s390_cio_hsch(schid, ccode);
256
257 return ccode;
258}
259
260static inline int __xsch(struct subchannel_id schid)
261{
262 register struct subchannel_id reg1 asm("1") = schid;
263 int ccode;
264
265 asm volatile(
266 " xsch\n"
267 " ipm %0\n"
268 " srl %0,28"
269 : "=d" (ccode)
270 : "d" (reg1)
271 : "cc");
272 return ccode;
273}
274
275int xsch(struct subchannel_id schid)
276{
277 int ccode;
278
279 ccode = __xsch(schid);
280 trace_s390_cio_xsch(schid, ccode);
281
282 return ccode;
283}
284
285int stcrw(struct crw *crw)
286{
287 int ccode;
288
289 asm volatile(
290 " stcrw 0(%2)\n"
291 " ipm %0\n"
292 " srl %0,28\n"
293 : "=d" (ccode), "=m" (*crw)
294 : "a" (crw)
295 : "cc");
296 trace_s390_cio_stcrw(crw, ccode);
297
298 return ccode;
299}
300
