diff options
| -rw-r--r-- | hw/ppc/spapr_caps.c | 10 | ||||
| -rw-r--r-- | hw/ppc/spapr_rtas.c | 59 | ||||
| -rw-r--r-- | include/hw/ppc/spapr.h | 4 |
3 files changed, 72 insertions, 1 deletions
diff --git a/hw/ppc/spapr_caps.c b/hw/ppc/spapr_caps.c index 393ee6845e..8b27d3ac09 100644 --- a/hw/ppc/spapr_caps.c +++ b/hw/ppc/spapr_caps.c @@ -515,6 +515,16 @@ static void cap_fwnmi_mce_apply(SpaprMachineState *spapr, uint8_t val, if (!val) { return; /* Disabled by default */ } + + if (tcg_enabled()) { + warn_report("Firmware Assisted Non-Maskable Interrupts(FWNMI) not " + "supported in TCG"); + } else if (kvm_enabled()) { + if (kvmppc_set_fwnmi() < 0) { + error_setg(errp, "Firmware Assisted Non-Maskable Interrupts(FWNMI) " + "not supported by KVM"); + } + } } SpaprCapabilityInfo capability_table[SPAPR_CAP_NUM] = { diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c index 89b7eb6c54..35d91260e6 100644 --- a/hw/ppc/spapr_rtas.c +++ b/hw/ppc/spapr_rtas.c @@ -399,6 +399,61 @@ static void rtas_get_power_level(PowerPCCPU *cpu, SpaprMachineState *spapr, rtas_st(rets, 1, 100); } +static void rtas_ibm_nmi_register(PowerPCCPU *cpu, + SpaprMachineState *spapr, + uint32_t token, uint32_t nargs, + target_ulong args, + uint32_t nret, target_ulong rets) +{ + hwaddr rtas_addr; + + if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI_MCE) == SPAPR_CAP_OFF) { + rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); + return; + } + + rtas_addr = spapr_get_rtas_addr(); + if (!rtas_addr) { + rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); + return; + } + + spapr->guest_machine_check_addr = rtas_ld(args, 1); + rtas_st(rets, 0, RTAS_OUT_SUCCESS); +} + +static void rtas_ibm_nmi_interlock(PowerPCCPU *cpu, + SpaprMachineState *spapr, + uint32_t token, uint32_t nargs, + target_ulong args, + uint32_t nret, target_ulong rets) +{ + if (spapr_get_cap(spapr, SPAPR_CAP_FWNMI_MCE) == SPAPR_CAP_OFF) { + rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); + return; + } + + if (spapr->guest_machine_check_addr == -1) { + /* NMI register not called */ + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); + return; + } + + if (spapr->mc_status != cpu->vcpu_id) { + /* The vCPU that hit the NMI should invoke "ibm,nmi-interlock" */ + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); + return; + } + + /* + * vCPU issuing "ibm,nmi-interlock" is done with NMI handling, + * hence unset mc_status. + */ + spapr->mc_status = -1; + qemu_cond_signal(&spapr->mc_delivery_cond); + rtas_st(rets, 0, RTAS_OUT_SUCCESS); +} + static struct rtas_call { const char *name; spapr_rtas_fn fn; @@ -527,6 +582,10 @@ static void core_rtas_register_types(void) rtas_set_power_level); spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level", rtas_get_power_level); + spapr_rtas_register(RTAS_IBM_NMI_REGISTER, "ibm,nmi-register", + rtas_ibm_nmi_register); + spapr_rtas_register(RTAS_IBM_NMI_INTERLOCK, "ibm,nmi-interlock", + rtas_ibm_nmi_interlock); } type_init(core_rtas_register_types) diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 652a5514e8..f6f82d88aa 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -656,8 +656,10 @@ target_ulong spapr_hypercall(PowerPCCPU *cpu, target_ulong opcode, #define RTAS_IBM_REMOVE_PE_DMA_WINDOW (RTAS_TOKEN_BASE + 0x28) #define RTAS_IBM_RESET_PE_DMA_WINDOW (RTAS_TOKEN_BASE + 0x29) #define RTAS_IBM_SUSPEND_ME (RTAS_TOKEN_BASE + 0x2A) +#define RTAS_IBM_NMI_REGISTER (RTAS_TOKEN_BASE + 0x2B) +#define RTAS_IBM_NMI_INTERLOCK (RTAS_TOKEN_BASE + 0x2C) -#define RTAS_TOKEN_MAX (RTAS_TOKEN_BASE + 0x2B) +#define RTAS_TOKEN_MAX (RTAS_TOKEN_BASE + 0x2D) /* RTAS ibm,get-system-parameter token values */ #define RTAS_SYSPARM_SPLPAR_CHARACTERISTICS 20 |