2 * QEMU S/390 Interrupt support
4 * Copyright IBM Corp. 2012, 2014
6 * This work is licensed under the terms of the GNU GPL, version 2 or (at your
7 * option) any later version. See the COPYING file in the top-level directory.
10 #include "qemu/osdep.h"
13 #include "kvm_s390x.h"
15 #include "exec/exec-all.h"
16 #include "sysemu/kvm.h"
17 #include "hw/s390x/ioinst.h"
19 /* Ensure to exit the TB after this call! */
20 void trigger_pgm_exception(CPUS390XState
*env
, uint32_t code
, uint32_t ilen
)
22 CPUState
*cs
= CPU(s390_env_get_cpu(env
));
24 cs
->exception_index
= EXCP_PGM
;
25 env
->int_pgm_code
= code
;
26 env
->int_pgm_ilen
= ilen
;
29 static void tcg_s390_program_interrupt(CPUS390XState
*env
, uint32_t code
,
33 trigger_pgm_exception(env
, code
, ilen
);
34 cpu_loop_exit(CPU(s390_env_get_cpu(env
)));
36 g_assert_not_reached();
40 void program_interrupt(CPUS390XState
*env
, uint32_t code
, int ilen
)
42 S390CPU
*cpu
= s390_env_get_cpu(env
);
44 qemu_log_mask(CPU_LOG_INT
, "program interrupt at %#" PRIx64
"\n",
48 kvm_s390_program_interrupt(cpu
, code
);
49 } else if (tcg_enabled()) {
50 tcg_s390_program_interrupt(env
, code
, ilen
);
52 g_assert_not_reached();
56 #if !defined(CONFIG_USER_ONLY)
57 void cpu_inject_ext(S390CPU
*cpu
, uint32_t code
, uint32_t param
,
60 CPUS390XState
*env
= &cpu
->env
;
62 if (env
->ext_index
== MAX_EXT_QUEUE
- 1) {
63 /* ugh - can't queue anymore. Let's drop. */
68 assert(env
->ext_index
< MAX_EXT_QUEUE
);
70 env
->ext_queue
[env
->ext_index
].code
= code
;
71 env
->ext_queue
[env
->ext_index
].param
= param
;
72 env
->ext_queue
[env
->ext_index
].param64
= param64
;
74 env
->pending_int
|= INTERRUPT_EXT
;
75 cpu_interrupt(CPU(cpu
), CPU_INTERRUPT_HARD
);
78 static void cpu_inject_io(S390CPU
*cpu
, uint16_t subchannel_id
,
79 uint16_t subchannel_number
,
80 uint32_t io_int_parm
, uint32_t io_int_word
)
82 CPUS390XState
*env
= &cpu
->env
;
83 int isc
= IO_INT_WORD_ISC(io_int_word
);
85 if (env
->io_index
[isc
] == MAX_IO_QUEUE
- 1) {
86 /* ugh - can't queue anymore. Let's drop. */
91 assert(env
->io_index
[isc
] < MAX_IO_QUEUE
);
93 env
->io_queue
[env
->io_index
[isc
]][isc
].id
= subchannel_id
;
94 env
->io_queue
[env
->io_index
[isc
]][isc
].nr
= subchannel_number
;
95 env
->io_queue
[env
->io_index
[isc
]][isc
].parm
= io_int_parm
;
96 env
->io_queue
[env
->io_index
[isc
]][isc
].word
= io_int_word
;
98 env
->pending_int
|= INTERRUPT_IO
;
99 cpu_interrupt(CPU(cpu
), CPU_INTERRUPT_HARD
);
102 static void cpu_inject_crw_mchk(S390CPU
*cpu
)
104 CPUS390XState
*env
= &cpu
->env
;
106 if (env
->mchk_index
== MAX_MCHK_QUEUE
- 1) {
107 /* ugh - can't queue anymore. Let's drop. */
112 assert(env
->mchk_index
< MAX_MCHK_QUEUE
);
114 env
->mchk_queue
[env
->mchk_index
].type
= 1;
116 env
->pending_int
|= INTERRUPT_MCHK
;
117 cpu_interrupt(CPU(cpu
), CPU_INTERRUPT_HARD
);
121 * All of the following interrupts are floating, i.e. not per-vcpu.
122 * We just need a dummy cpustate in order to be able to inject in the
125 void s390_sclp_extint(uint32_t parm
)
128 kvm_s390_service_interrupt(parm
);
130 S390CPU
*dummy_cpu
= s390_cpu_addr2state(0);
132 cpu_inject_ext(dummy_cpu
, EXT_SERVICE
, parm
, 0);
136 void s390_io_interrupt(uint16_t subchannel_id
, uint16_t subchannel_nr
,
137 uint32_t io_int_parm
, uint32_t io_int_word
)
140 kvm_s390_io_interrupt(subchannel_id
, subchannel_nr
, io_int_parm
,
143 S390CPU
*dummy_cpu
= s390_cpu_addr2state(0);
145 cpu_inject_io(dummy_cpu
, subchannel_id
, subchannel_nr
, io_int_parm
,
150 void s390_crw_mchk(void)
155 S390CPU
*dummy_cpu
= s390_cpu_addr2state(0);
157 cpu_inject_crw_mchk(dummy_cpu
);