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target/ppc: create an interrupt deliver method for POWER8 

The new method is identical to ppc_deliver_interrupt, processor-specific
code will be added/removed in the following patches.

Signed-off-by: Matheus Ferst <matheus.ferst@eldorado.org.br>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Message-Id: <20221011204829.1641124-15-matheus.ferst@eldorado.org.br>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
This commit is contained in:
Matheus Ferst 2022-10-11 17:48:14 -03:00 committed by Daniel Henrique Barboza
parent f6194fdde2
commit 6527e757db
1 changed files with 107 additions and 0 deletions
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107
target/ppc/excp_helper.c
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@ -1984,6 +1984,110 @@ static int ppc_next_unmasked_interrupt(CPUPPCState *env)
}
#if defined(TARGET_PPC64)
static void p8_deliver_interrupt(CPUPPCState *env, int interrupt)
{
PowerPCCPU *cpu = env_archcpu(env);
CPUState *cs = env_cpu(env);
switch (interrupt) {
case PPC_INTERRUPT_RESET: /* External reset */
env->pending_interrupts &= ~PPC_INTERRUPT_RESET;
powerpc_excp(cpu, POWERPC_EXCP_RESET);
break;
case PPC_INTERRUPT_MCK: /* Machine check exception */
env->pending_interrupts &= ~PPC_INTERRUPT_MCK;
powerpc_excp(cpu, POWERPC_EXCP_MCHECK);
break;
case PPC_INTERRUPT_HDECR: /* Hypervisor decrementer exception */
/* HDEC clears on delivery */
env->pending_interrupts &= ~PPC_INTERRUPT_HDECR;
powerpc_excp(cpu, POWERPC_EXCP_HDECR);
break;
case PPC_INTERRUPT_HVIRT: /* Hypervisor virtualization interrupt */
powerpc_excp(cpu, POWERPC_EXCP_HVIRT);
break;
case PPC_INTERRUPT_EXT:
if (books_vhyp_promotes_external_to_hvirt(cpu)) {
powerpc_excp(cpu, POWERPC_EXCP_HVIRT);
} else {
powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL);
}
break;
case PPC_INTERRUPT_CEXT: /* External critical interrupt */
powerpc_excp(cpu, POWERPC_EXCP_CRITICAL);
break;
case PPC_INTERRUPT_WDT: /* Watchdog timer on embedded PowerPC */
env->pending_interrupts &= ~PPC_INTERRUPT_WDT;
powerpc_excp(cpu, POWERPC_EXCP_WDT);
break;
case PPC_INTERRUPT_CDOORBELL:
env->pending_interrupts &= ~PPC_INTERRUPT_CDOORBELL;
powerpc_excp(cpu, POWERPC_EXCP_DOORCI);
break;
case PPC_INTERRUPT_FIT: /* Fixed interval timer on embedded PowerPC */
env->pending_interrupts &= ~PPC_INTERRUPT_FIT;
powerpc_excp(cpu, POWERPC_EXCP_FIT);
break;
case PPC_INTERRUPT_PIT: /* Programmable interval timer on embedded ppc */
env->pending_interrupts &= ~PPC_INTERRUPT_PIT;
powerpc_excp(cpu, POWERPC_EXCP_PIT);
break;
case PPC_INTERRUPT_DECR: /* Decrementer exception */
if (ppc_decr_clear_on_delivery(env)) {
env->pending_interrupts &= ~PPC_INTERRUPT_DECR;
}
powerpc_excp(cpu, POWERPC_EXCP_DECR);
break;
case PPC_INTERRUPT_DOORBELL:
env->pending_interrupts &= ~PPC_INTERRUPT_DOORBELL;
if (is_book3s_arch2x(env)) {
powerpc_excp(cpu, POWERPC_EXCP_SDOOR);
} else {
powerpc_excp(cpu, POWERPC_EXCP_DOORI);
}
break;
case PPC_INTERRUPT_HDOORBELL:
env->pending_interrupts &= ~PPC_INTERRUPT_HDOORBELL;
powerpc_excp(cpu, POWERPC_EXCP_SDOOR_HV);
break;
case PPC_INTERRUPT_PERFM:
env->pending_interrupts &= ~PPC_INTERRUPT_PERFM;
powerpc_excp(cpu, POWERPC_EXCP_PERFM);
break;
case PPC_INTERRUPT_THERM: /* Thermal interrupt */
env->pending_interrupts &= ~PPC_INTERRUPT_THERM;
powerpc_excp(cpu, POWERPC_EXCP_THERM);
break;
case PPC_INTERRUPT_EBB: /* EBB exception */
env->pending_interrupts &= ~PPC_INTERRUPT_EBB;
if (env->spr[SPR_BESCR] & BESCR_PMEO) {
powerpc_excp(cpu, POWERPC_EXCP_PERFM_EBB);
} else if (env->spr[SPR_BESCR] & BESCR_EEO) {
powerpc_excp(cpu, POWERPC_EXCP_EXTERNAL_EBB);
}
break;
case 0:
/*
* This is a bug ! It means that has_work took us out of halt without
* anything to deliver while in a PM state that requires getting
* out via a 0x100
*
* This means we will incorrectly execute past the power management
* instruction instead of triggering a reset.
*
* It generally means a discrepancy between the wakeup conditions in the
* processor has_work implementation and the logic in this function.
*/
assert(!env->resume_as_sreset);
break;
default:
cpu_abort(cs, "Invalid PowerPC interrupt %d. Aborting\n", interrupt);
}
}
static void p9_deliver_interrupt(CPUPPCState *env, int interrupt)
{
PowerPCCPU *cpu = env_archcpu(env);
@ -2172,6 +2276,9 @@ static void ppc_deliver_interrupt(CPUPPCState *env, int interrupt)
{
switch (env->excp_model) {
#if defined(TARGET_PPC64)
case POWERPC_EXCP_POWER8:
p8_deliver_interrupt(env, interrupt);
break;
case POWERPC_EXCP_POWER9:
case POWERPC_EXCP_POWER10:
p9_deliver_interrupt(env, interrupt);