From f6194fdde2e37743d2833b66fc272472190e51cc Mon Sep 17 00:00:00 2001 From: Matheus Ferst Date: Tue, 11 Oct 2022 17:48:13 -0300 Subject: [PATCH] target/ppc: remove unused interrupts from p8_next_unmasked_interrupt Remove the following unused interrupts from the POWER8 interrupt masking method: - PPC_INTERRUPT_RESET: only raised for 6xx, 7xx, 970, and POWER5p; - Debug Interrupt: removed in Power ISA v2.07; - Hypervisor Virtualization: introduced in Power ISA v3.0; - Critical Input, Watchdog Timer, and Fixed Interval Timer: only defined for embedded CPUs; - Critical Doorbell: processor does not implement the "Embedded.Processor Control" category; - Programmable Interval Timer: 40x-only; - PPC_INTERRUPT_THERM: only raised for 970 and POWER5p; Signed-off-by: Matheus Ferst Reviewed-by: Fabiano Rosas Message-Id: <20221011204829.1641124-14-matheus.ferst@eldorado.org.br> Signed-off-by: Daniel Henrique Barboza --- target/ppc/excp_helper.c | 45 +++++++-------------------------------------- 1 file changed, 7 insertions(+), 38 deletions(-) diff --git a/target/ppc/excp_helper.c b/target/ppc/excp_helper.c index c7b303a9a7..2bb636a439 100644 --- a/target/ppc/excp_helper.c +++ b/target/ppc/excp_helper.c @@ -1685,14 +1685,17 @@ void ppc_cpu_do_interrupt(CPUState *cs) } #if defined(TARGET_PPC64) +#define P8_UNUSED_INTERRUPTS \ + (PPC_INTERRUPT_RESET | PPC_INTERRUPT_DEBUG | PPC_INTERRUPT_HVIRT | \ + PPC_INTERRUPT_CEXT | PPC_INTERRUPT_WDT | PPC_INTERRUPT_CDOORBELL | \ + PPC_INTERRUPT_FIT | PPC_INTERRUPT_PIT | PPC_INTERRUPT_THERM) + static int p8_next_unmasked_interrupt(CPUPPCState *env) { bool async_deliver; - /* External reset */ - if (env->pending_interrupts & PPC_INTERRUPT_RESET) { - return PPC_INTERRUPT_RESET; - } + assert((env->pending_interrupts & P8_UNUSED_INTERRUPTS) == 0); + /* Machine check exception */ if (env->pending_interrupts & PPC_INTERRUPT_MCK) { return PPC_INTERRUPT_MCK; @@ -1716,15 +1719,6 @@ static int p8_next_unmasked_interrupt(CPUPPCState *env) } } - /* Hypervisor virtualization interrupt */ - if (env->pending_interrupts & PPC_INTERRUPT_HVIRT) { - /* LPCR will be clear when not supported so this will work */ - bool hvice = !!(env->spr[SPR_LPCR] & LPCR_HVICE); - if ((async_deliver || !FIELD_EX64_HV(env->msr)) && hvice) { - return PPC_INTERRUPT_HVIRT; - } - } - /* External interrupt can ignore MSR:EE under some circumstances */ if (env->pending_interrupts & PPC_INTERRUPT_EXT) { bool lpes0 = !!(env->spr[SPR_LPCR] & LPCR_LPES0); @@ -1736,28 +1730,7 @@ static int p8_next_unmasked_interrupt(CPUPPCState *env) return PPC_INTERRUPT_EXT; } } - if (FIELD_EX64(env->msr, MSR, CE)) { - /* External critical interrupt */ - if (env->pending_interrupts & PPC_INTERRUPT_CEXT) { - return PPC_INTERRUPT_CEXT; - } - } if (async_deliver != 0) { - /* Watchdog timer on embedded PowerPC */ - if (env->pending_interrupts & PPC_INTERRUPT_WDT) { - return PPC_INTERRUPT_WDT; - } - if (env->pending_interrupts & PPC_INTERRUPT_CDOORBELL) { - return PPC_INTERRUPT_CDOORBELL; - } - /* Fixed interval timer on embedded PowerPC */ - if (env->pending_interrupts & PPC_INTERRUPT_FIT) { - return PPC_INTERRUPT_FIT; - } - /* Programmable interval timer on embedded PowerPC */ - if (env->pending_interrupts & PPC_INTERRUPT_PIT) { - return PPC_INTERRUPT_PIT; - } /* Decrementer exception */ if (env->pending_interrupts & PPC_INTERRUPT_DECR) { return PPC_INTERRUPT_DECR; @@ -1771,10 +1744,6 @@ static int p8_next_unmasked_interrupt(CPUPPCState *env) if (env->pending_interrupts & PPC_INTERRUPT_PERFM) { return PPC_INTERRUPT_PERFM; } - /* Thermal interrupt */ - if (env->pending_interrupts & PPC_INTERRUPT_THERM) { - return PPC_INTERRUPT_THERM; - } /* EBB exception */ if (env->pending_interrupts & PPC_INTERRUPT_EBB) { /* -- 2.11.0