summaryrefslogtreecommitdiffstats
path: root/drivers/s390/cio/ioasm.h
blob: c874607d9a806ec9fccbe908a5569198c0351ae3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
#ifndef S390_CIO_IOASM_H
#define S390_CIO_IOASM_H

/*
 * TPI info structure
 */
struct tpi_info {
	__u32 reserved1	 : 16;	 /* reserved 0x00000001 */
	__u32 irq	 : 16;	 /* aka. subchannel number */
	__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
 */

extern __inline__ int stsch(int irq, 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" (irq | 0x10000), "a" (addr)
		: "cc", "1" );
	return ccode;
}

extern __inline__ int msch(int irq, 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" (irq | 0x10000L), "a" (addr)
		: "cc", "1" );
	return ccode;
}

extern __inline__ int msch_err(int irq, 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" (irq | 0x10000L), "a" (addr), "K" (-EIO)
		: "cc", "1" );
	return ccode;
}

extern __inline__ int tsch(int irq, 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" (irq | 0x10000L), "a" (addr)
		: "cc", "1" );
	return ccode;
}

extern __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)
		: "cc", "1" );
	return ccode;
}

extern __inline__ int ssch(int irq, 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" (irq | 0x10000L), "a" (addr)
		: "cc", "1" );
	return ccode;
}

extern __inline__ int rsch(int irq)
{
	int ccode;

	__asm__ __volatile__(
		"   lr	  1,%1\n"
		"   rsch\n"
		"   ipm	  %0\n"
		"   srl	  %0,28"
		: "=d" (ccode)
		: "d" (irq | 0x10000L)
		: "cc", "1" );
	return ccode;
}

extern __inline__ int csch(int irq)
{
	int ccode;

	__asm__ __volatile__(
		"   lr	  1,%1\n"
		"   csch\n"
		"   ipm	  %0\n"
		"   srl	  %0,28"
		: "=d" (ccode)
		: "d" (irq | 0x10000L)
		: "cc", "1" );
	return ccode;
}

extern __inline__ int hsch(int irq)
{
	int ccode;

	__asm__ __volatile__(
		"   lr	  1,%1\n"
		"   hsch\n"
		"   ipm	  %0\n"
		"   srl	  %0,28"
		: "=d" (ccode)
		: "d" (irq | 0x10000L)
		: "cc", "1" );
	return ccode;
}

extern __inline__ int xsch(int irq)
{
	int ccode;

	__asm__ __volatile__(
		"   lr	  1,%1\n"
		"   .insn rre,0xb2760000,%1,0\n"
		"   ipm	  %0\n"
		"   srl	  %0,28"
		: "=d" (ccode)
		: "d" (irq | 0x10000L)
		: "cc", "1" );
	return ccode;
}

extern __inline__ int chsc(void *chsc_area)
{
	int cc;

	__asm__ __volatile__ (
		".insn	rre,0xb25f0000,%1,0	\n\t"
		"ipm	%0	\n\t"
		"srl	%0,28	\n\t"
		: "=d" (cc)
		: "d" (chsc_area)
		: "cc" );

	return cc;
}

extern __inline__ int iac( void)
{
	int ccode;

	__asm__ __volatile__(
		"   iac	  1\n"
		"   ipm	  %0\n"
		"   srl	  %0,28"
		: "=d" (ccode) : : "cc", "1" );
	return ccode;
}

extern __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
OpenPOWER on IntegriCloud