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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
/*
* QEMU S/390 Interrupt support
*
* Copyright IBM Corp. 2012, 2014
*
* This work is licensed under the terms of the GNU GPL, version 2 or (at your
* option) any later version. See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qemu/log.h"
#include "cpu.h"
#include "kvm_s390x.h"
#include "internal.h"
#include "exec/exec-all.h"
#include "sysemu/kvm.h"
#include "hw/s390x/ioinst.h"
#include "tcg_s390x.h"
#if !defined(CONFIG_USER_ONLY)
#include "hw/s390x/s390_flic.h"
#endif
/* Ensure to exit the TB after this call! */
void trigger_pgm_exception(CPUS390XState *env, uint32_t code, uint32_t ilen)
{
CPUState *cs = CPU(s390_env_get_cpu(env));
cs->exception_index = EXCP_PGM;
env->int_pgm_code = code;
env->int_pgm_ilen = ilen;
}
void s390_program_interrupt(CPUS390XState *env, uint32_t code, int ilen,
uintptr_t ra)
{
S390CPU *cpu = s390_env_get_cpu(env);
if (kvm_enabled()) {
kvm_s390_program_interrupt(cpu, code);
} else if (tcg_enabled()) {
tcg_s390_program_interrupt(env, code, ilen, ra);
} else {
g_assert_not_reached();
}
}
#if !defined(CONFIG_USER_ONLY)
void cpu_inject_clock_comparator(S390CPU *cpu)
{
CPUS390XState *env = &cpu->env;
env->pending_int |= INTERRUPT_EXT_CLOCK_COMPARATOR;
cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
}
void cpu_inject_cpu_timer(S390CPU *cpu)
{
CPUS390XState *env = &cpu->env;
env->pending_int |= INTERRUPT_EXT_CPU_TIMER;
cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
}
void cpu_inject_emergency_signal(S390CPU *cpu, uint16_t src_cpu_addr)
{
CPUS390XState *env = &cpu->env;
g_assert(src_cpu_addr < S390_MAX_CPUS);
set_bit(src_cpu_addr, env->emergency_signals);
env->pending_int |= INTERRUPT_EMERGENCY_SIGNAL;
cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
}
int cpu_inject_external_call(S390CPU *cpu, uint16_t src_cpu_addr)
{
CPUS390XState *env = &cpu->env;
g_assert(src_cpu_addr < S390_MAX_CPUS);
if (env->pending_int & INTERRUPT_EXTERNAL_CALL) {
return -EBUSY;
}
env->external_call_addr = src_cpu_addr;
env->pending_int |= INTERRUPT_EXTERNAL_CALL;
cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
return 0;
}
void cpu_inject_restart(S390CPU *cpu)
{
CPUS390XState *env = &cpu->env;
if (kvm_enabled()) {
kvm_s390_restart_interrupt(cpu);
return;
}
env->pending_int |= INTERRUPT_RESTART;
cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
}
void cpu_inject_stop(S390CPU *cpu)
{
CPUS390XState *env = &cpu->env;
if (kvm_enabled()) {
kvm_s390_stop_interrupt(cpu);
return;
}
env->pending_int |= INTERRUPT_STOP;
cpu_interrupt(CPU(cpu), CPU_INTERRUPT_HARD);
}
/*
* All of the following interrupts are floating, i.e. not per-vcpu.
* We just need a dummy cpustate in order to be able to inject in the
* non-kvm case.
*/
void s390_sclp_extint(uint32_t parm)
{
S390FLICState *fs = s390_get_flic();
S390FLICStateClass *fsc = s390_get_flic_class(fs);
fsc->inject_service(fs, parm);
}
void s390_io_interrupt(uint16_t subchannel_id, uint16_t subchannel_nr,
uint32_t io_int_parm, uint32_t io_int_word)
{
S390FLICState *fs = s390_get_flic();
S390FLICStateClass *fsc = s390_get_flic_class(fs);
fsc->inject_io(fs, subchannel_id, subchannel_nr, io_int_parm, io_int_word);
}
void s390_crw_mchk(void)
{
S390FLICState *fs = s390_get_flic();
S390FLICStateClass *fsc = s390_get_flic_class(fs);
fsc->inject_crw_mchk(fs);
}
bool s390_cpu_has_mcck_int(S390CPU *cpu)
{
QEMUS390FLICState *flic = s390_get_qemu_flic(s390_get_flic());
CPUS390XState *env = &cpu->env;
if (!(env->psw.mask & PSW_MASK_MCHECK)) {
return false;
}
/* for now we only support channel report machine checks (floating) */
if (qemu_s390_flic_has_crw_mchk(flic) &&
(env->cregs[14] & CR14_CHANNEL_REPORT_SC)) {
return true;
}
return false;
}
bool s390_cpu_has_ext_int(S390CPU *cpu)
{
QEMUS390FLICState *flic = s390_get_qemu_flic(s390_get_flic());
CPUS390XState *env = &cpu->env;
if (!(env->psw.mask & PSW_MASK_EXT)) {
return false;
}
if ((env->pending_int & INTERRUPT_EMERGENCY_SIGNAL) &&
(env->cregs[0] & CR0_EMERGENCY_SIGNAL_SC)) {
return true;
}
if ((env->pending_int & INTERRUPT_EXTERNAL_CALL) &&
(env->cregs[0] & CR0_EXTERNAL_CALL_SC)) {
return true;
}
if ((env->pending_int & INTERRUPT_EXTERNAL_CALL) &&
(env->cregs[0] & CR0_EXTERNAL_CALL_SC)) {
return true;
}
if ((env->pending_int & INTERRUPT_EXT_CLOCK_COMPARATOR) &&
(env->cregs[0] & CR0_CKC_SC)) {
return true;
}
if ((env->pending_int & INTERRUPT_EXT_CPU_TIMER) &&
(env->cregs[0] & CR0_CPU_TIMER_SC)) {
return true;
}
if (qemu_s390_flic_has_service(flic) &&
(env->cregs[0] & CR0_SERVICE_SC)) {
return true;
}
return false;
}
bool s390_cpu_has_io_int(S390CPU *cpu)
{
QEMUS390FLICState *flic = s390_get_qemu_flic(s390_get_flic());
CPUS390XState *env = &cpu->env;
if (!(env->psw.mask & PSW_MASK_IO)) {
return false;
}
return qemu_s390_flic_has_io(flic, env->cregs[6]);
}
bool s390_cpu_has_restart_int(S390CPU *cpu)
{
CPUS390XState *env = &cpu->env;
return env->pending_int & INTERRUPT_RESTART;
}
bool s390_cpu_has_stop_int(S390CPU *cpu)
{
CPUS390XState *env = &cpu->env;
return env->pending_int & INTERRUPT_STOP;
}
#endif
bool s390_cpu_has_int(S390CPU *cpu)
{
#ifndef CONFIG_USER_ONLY
if (!tcg_enabled()) {
return false;
}
return s390_cpu_has_mcck_int(cpu) ||
s390_cpu_has_ext_int(cpu) ||
s390_cpu_has_io_int(cpu) ||
s390_cpu_has_restart_int(cpu) ||
s390_cpu_has_stop_int(cpu);
#else
return false;
#endif
}
|
