diff options
| -rw-r--r-- | cpus.c | 14 | ||||
| -rw-r--r-- | hmp-commands.hx | 4 | ||||
| -rw-r--r-- | hw/s390x/s390-virtio-ccw.c | 15 | ||||
| -rw-r--r-- | qmp-commands.hx | 2 | ||||
| -rw-r--r-- | target-s390x/cpu-qom.h | 6 | ||||
| -rw-r--r-- | target-s390x/cpu.c | 52 | ||||
| -rw-r--r-- | target-s390x/cpu.h | 20 | ||||
| -rw-r--r-- | target-s390x/kvm.c | 40 | ||||
| -rw-r--r-- | target-s390x/misc_helper.c | 70 |
9 files changed, 204 insertions, 19 deletions
diff --git a/cpus.c b/cpus.c index b9e5685e16..d74cc117b3 100644 --- a/cpus.c +++ b/cpus.c @@ -1401,6 +1401,20 @@ void qmp_inject_nmi(Error **errp) apic_deliver_nmi(env->apic_state); } } +#elif defined(TARGET_S390X) + CPUState *cs; + S390CPU *cpu; + + for (cs = first_cpu; cs != NULL; cs = cs->next_cpu) { + cpu = S390_CPU(cs); + if (cpu->env.cpu_num == monitor_get_cpu_index()) { + if (s390_cpu_restart(S390_CPU(cs)) == -1) { + error_set(errp, QERR_UNSUPPORTED); + return; + } + break; + } + } #else error_set(errp, QERR_UNSUPPORTED); #endif diff --git a/hmp-commands.hx b/hmp-commands.hx index 8c6b91a9c7..628807f684 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -822,7 +822,7 @@ The values that can be specified here depend on the machine type, but are the same that can be specified in the @code{-boot} command line option. ETEXI -#if defined(TARGET_I386) +#if defined(TARGET_I386) || defined(TARGET_S390X) { .name = "nmi", .args_type = "", @@ -834,7 +834,7 @@ ETEXI STEXI @item nmi @var{cpu} @findex nmi -Inject an NMI on the given CPU (x86 only). +Inject an NMI (x86) or RESTART (s390x) on the given CPU. ETEXI diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index aebbbf1755..8fd46a92c9 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -17,6 +17,21 @@ #include "css.h" #include "virtio-ccw.h" +void io_subsystem_reset(void) +{ + DeviceState *css, *sclp; + + css = DEVICE(object_resolve_path_type("", "virtual-css-bridge", NULL)); + if (css) { + qdev_reset_all(css); + } + sclp = DEVICE(object_resolve_path_type("", + "s390-sclp-event-facility", NULL)); + if (sclp) { + qdev_reset_all(sclp); + } +} + static int virtio_ccw_hcall_notify(const uint64_t *args) { uint64_t subch_id = args[0]; diff --git a/qmp-commands.hx b/qmp-commands.hx index cf47e3fe72..bb09e72712 100644 --- a/qmp-commands.hx +++ b/qmp-commands.hx @@ -487,7 +487,7 @@ Example: <- { "return": {} } Note: inject-nmi fails when the guest doesn't support injecting. - Currently, only x86 guests do. + Currently, only x86 (NMI) and s390x (RESTART) guests do. EQMP diff --git a/target-s390x/cpu-qom.h b/target-s390x/cpu-qom.h index cbe2341b3b..ac0460eb30 100644 --- a/target-s390x/cpu-qom.h +++ b/target-s390x/cpu-qom.h @@ -36,6 +36,9 @@ * S390CPUClass: * @parent_realize: The parent class' realize handler. * @parent_reset: The parent class' reset handler. + * @load_normal: Performs a load normal. + * @cpu_reset: Performs a CPU reset. + * @initial_cpu_reset: Performs an initial CPU reset. * * An S/390 CPU model. */ @@ -46,6 +49,9 @@ typedef struct S390CPUClass { DeviceRealize parent_realize; void (*parent_reset)(CPUState *cpu); + void (*load_normal)(CPUState *cpu); + void (*cpu_reset)(CPUState *cpu); + void (*initial_cpu_reset)(CPUState *cpu); } S390CPUClass; /** diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c index 5cc99387b2..3c89f8a767 100644 --- a/target-s390x/cpu.c +++ b/target-s390x/cpu.c @@ -65,7 +65,18 @@ static void s390_cpu_set_pc(CPUState *cs, vaddr value) cpu->env.psw.addr = value; } -/* CPUClass::reset() */ +#if !defined(CONFIG_USER_ONLY) +/* S390CPUClass::load_normal() */ +static void s390_cpu_load_normal(CPUState *s) +{ + S390CPU *cpu = S390_CPU(s); + cpu->env.psw.addr = ldl_phys(4) & PSW_MASK_ESA_ADDR; + cpu->env.psw.mask = PSW_MASK_32 | PSW_MASK_64; + s390_add_running_cpu(cpu); +} +#endif + +/* S390CPUClass::cpu_reset() */ static void s390_cpu_reset(CPUState *s) { S390CPU *cpu = S390_CPU(s); @@ -73,6 +84,37 @@ static void s390_cpu_reset(CPUState *s) CPUS390XState *env = &cpu->env; s390_del_running_cpu(cpu); + scc->parent_reset(s); +#if !defined(CONFIG_USER_ONLY) + s->halted = 1; +#endif + tlb_flush(env, 1); +} + +/* S390CPUClass::initial_reset() */ +static void s390_cpu_initial_reset(CPUState *s) +{ + S390CPU *cpu = S390_CPU(s); + CPUS390XState *env = &cpu->env; + + s390_cpu_reset(s); + /* initial reset does not touch regs,fregs and aregs */ + memset(&env->fpc, 0, offsetof(CPUS390XState, breakpoints) - + offsetof(CPUS390XState, fpc)); + + /* architectured initial values for CR 0 and 14 */ + env->cregs[0] = CR0_RESET; + env->cregs[14] = CR14_RESET; +} + +/* CPUClass:reset() */ +static void s390_cpu_full_reset(CPUState *s) +{ + S390CPU *cpu = S390_CPU(s); + S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); + CPUS390XState *env = &cpu->env; + + s390_del_running_cpu(cpu); scc->parent_reset(s); @@ -169,8 +211,12 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data) dc->realize = s390_cpu_realizefn; scc->parent_reset = cc->reset; - cc->reset = s390_cpu_reset; - +#if !defined(CONFIG_USER_ONLY) + scc->load_normal = s390_cpu_load_normal; +#endif + scc->cpu_reset = s390_cpu_reset; + scc->initial_cpu_reset = s390_cpu_initial_reset; + cc->reset = s390_cpu_full_reset; cc->do_interrupt = s390_cpu_do_interrupt; cc->dump_state = s390_cpu_dump_state; cc->set_pc = s390_cpu_set_pc; diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 65bef8625f..8be5648806 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -228,6 +228,8 @@ typedef struct CPUS390XState { #undef PSW_MASK_CC #undef PSW_MASK_PM #undef PSW_MASK_64 +#undef PSW_MASK_32 +#undef PSW_MASK_ESA_ADDR #define PSW_MASK_PER 0x4000000000000000ULL #define PSW_MASK_DAT 0x0400000000000000ULL @@ -243,6 +245,7 @@ typedef struct CPUS390XState { #define PSW_MASK_PM 0x00000F0000000000ULL #define PSW_MASK_64 0x0000000100000000ULL #define PSW_MASK_32 0x0000000080000000ULL +#define PSW_MASK_ESA_ADDR 0x000000007fffffffULL #undef PSW_ASC_PRIMARY #undef PSW_ASC_ACCREG @@ -400,6 +403,7 @@ void cpu_unlock(void); typedef struct SubchDev SubchDev; #ifndef CONFIG_USER_ONLY +extern void io_subsystem_reset(void); SubchDev *css_find_subch(uint8_t m, uint8_t cssid, uint8_t ssid, uint16_t schid); bool css_subch_visible(SubchDev *sch); @@ -1047,6 +1051,9 @@ uint32_t set_cc_nz_f64(float64 v); uint32_t set_cc_nz_f128(float128 v); /* misc_helper.c */ +#ifndef CONFIG_USER_ONLY +void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3); +#endif void program_interrupt(CPUS390XState *env, uint32_t code, int ilen); void QEMU_NORETURN runtime_exception(CPUS390XState *env, int excp, uintptr_t retaddr); @@ -1062,6 +1069,7 @@ void kvm_s390_enable_css_support(S390CPU *cpu); int kvm_s390_get_registers_partial(CPUState *cpu); int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, uint32_t sch, int vq, bool assign); +int kvm_s390_cpu_restart(S390CPU *cpu); #else static inline void kvm_s390_io_interrupt(S390CPU *cpu, uint16_t subchannel_id, @@ -1086,8 +1094,20 @@ static inline int kvm_s390_assign_subch_ioeventfd(EventNotifier *notifier, { return -ENOSYS; } +static inline int kvm_s390_cpu_restart(S390CPU *cpu) +{ + return -ENOSYS; +} #endif +static inline int s390_cpu_restart(S390CPU *cpu) +{ + if (kvm_enabled()) { + return kvm_s390_cpu_restart(cpu); + } + return -ENOSYS; +} + static inline void s390_io_interrupt(S390CPU *cpu, uint16_t subchannel_id, uint16_t subchannel_nr, diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index 26d18e3bcf..185c8f5a45 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -72,6 +72,7 @@ #define PRIV_XSCH 0x76 #define PRIV_SQBS 0x8a #define PRIV_EQBS 0x9c +#define DIAG_IPL 0x308 #define DIAG_KVM_HYPERCALL 0x500 #define DIAG_KVM_BREAKPOINT 0x501 @@ -578,32 +579,45 @@ static int handle_hypercall(S390CPU *cpu, struct kvm_run *run) return 0; } +static void kvm_handle_diag_308(S390CPU *cpu, struct kvm_run *run) +{ + uint64_t r1, r3; + + cpu_synchronize_state(CPU(cpu)); + r1 = (run->s390_sieic.ipa & 0x00f0) >> 8; + r3 = run->s390_sieic.ipa & 0x000f; + handle_diag_308(&cpu->env, r1, r3); +} + static int handle_diag(S390CPU *cpu, struct kvm_run *run, int ipb_code) { int r = 0; switch (ipb_code) { - case DIAG_KVM_HYPERCALL: - r = handle_hypercall(cpu, run); - break; - case DIAG_KVM_BREAKPOINT: - sleep(10); - break; - default: - DPRINTF("KVM: unknown DIAG: 0x%x\n", ipb_code); - r = -1; - break; + case DIAG_IPL: + kvm_handle_diag_308(cpu, run); + break; + case DIAG_KVM_HYPERCALL: + r = handle_hypercall(cpu, run); + break; + case DIAG_KVM_BREAKPOINT: + sleep(10); + break; + default: + DPRINTF("KVM: unknown DIAG: 0x%x\n", ipb_code); + r = -1; + break; } return r; } -static int s390_cpu_restart(S390CPU *cpu) +int kvm_s390_cpu_restart(S390CPU *cpu) { kvm_s390_interrupt(cpu, KVM_S390_RESTART, 0); s390_add_running_cpu(cpu); qemu_cpu_kick(CPU(cpu)); - DPRINTF("DONE: SIGP cpu restart: %p\n", &cpu->env); + DPRINTF("DONE: KVM cpu restart: %p\n", &cpu->env); return 0; } @@ -672,7 +686,7 @@ static int handle_sigp(S390CPU *cpu, struct kvm_run *run, uint8_t ipa1) switch (order_code) { case SIGP_RESTART: - r = s390_cpu_restart(target_cpu); + r = kvm_s390_cpu_restart(target_cpu); break; case SIGP_STORE_STATUS_ADDR: r = s390_store_status(target_env, parameter); diff --git a/target-s390x/misc_helper.c b/target-s390x/misc_helper.c index 454960aa01..4afd7dab1c 100644 --- a/target-s390x/misc_helper.c +++ b/target-s390x/misc_helper.c @@ -31,6 +31,7 @@ #if !defined(CONFIG_USER_ONLY) #include "exec/softmmu_exec.h" +#include "sysemu/cpus.h" #include "sysemu/sysemu.h" #endif @@ -179,6 +180,75 @@ uint32_t HELPER(servc)(CPUS390XState *env, uint64_t r1, uint64_t r2) return r; } +#ifndef CONFIG_USER_ONLY +static void cpu_reset_all(void) +{ + CPUState *cpu; + S390CPUClass *scc; + + for (cpu = first_cpu; cpu; cpu = cpu->next_cpu) { + scc = S390_CPU_GET_CLASS(CPU(cpu)); + scc->cpu_reset(CPU(cpu)); + } +} + +static int load_normal_reset(S390CPU *cpu) +{ + S390CPUClass *scc = S390_CPU_GET_CLASS(cpu); + + pause_all_vcpus(); + cpu_synchronize_all_states(); + cpu_reset_all(); + io_subsystem_reset(); + scc->initial_cpu_reset(CPU(cpu)); + scc->load_normal(CPU(cpu)); + cpu_synchronize_all_post_reset(); + resume_all_vcpus(); + return 0; +} + +#define DIAG_308_RC_NO_CONF 0x0102 +#define DIAG_308_RC_INVALID 0x0402 +void handle_diag_308(CPUS390XState *env, uint64_t r1, uint64_t r3) +{ + uint64_t addr = env->regs[r1]; + uint64_t subcode = env->regs[r3]; + + if (env->psw.mask & PSW_MASK_PSTATE) { + program_interrupt(env, PGM_PRIVILEGED, ILEN_LATER_INC); + return; + } + + if ((subcode & ~0x0ffffULL) || (subcode > 6)) { + program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER_INC); + return; + } + + switch (subcode) { + case 1: + load_normal_reset(s390_env_get_cpu(env)); + break; + case 5: + if ((r1 & 1) || (addr & 0x0fffULL)) { + program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER_INC); + return; + } + env->regs[r1+1] = DIAG_308_RC_INVALID; + return; + case 6: + if ((r1 & 1) || (addr & 0x0fffULL)) { + program_interrupt(env, PGM_SPECIFICATION, ILEN_LATER_INC); + return; + } + env->regs[r1+1] = DIAG_308_RC_NO_CONF; + return; + default: + hw_error("Unhandled diag308 subcode %" PRIx64, subcode); + break; + } +} +#endif + /* DIAG */ uint64_t HELPER(diag)(CPUS390XState *env, uint32_t num, uint64_t mem, uint64_t code) |