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target/ppc/POWER9: Add cpu_has_work function for POWER9

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The cpu has work function is used to mask interrupts used to determine
if there is work for the cpu based on the LPCR. Add a function to do this
for POWER9 and add it to the POWER9 cpu definition. This is similar to that
for POWER8 except using the LPCR bits as defined for POWER9.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Suraj Jitindar Singh 2017-03-01 17:54:40 +11:00 committed by David Gibson
parent 4975c098c9
commit 6f46dcb3e5
1 changed files with 45 additions and 0 deletions
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45
target/ppc/translate_init.c
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@ -8858,10 +8858,54 @@ static bool ppc_pvr_match_power9(PowerPCCPUClass *pcc, uint32_t pvr)
return false;
}
static bool cpu_has_work_POWER9(CPUState *cs)
{
PowerPCCPU *cpu = POWERPC_CPU(cs);
CPUPPCState *env = &cpu->env;
if (cs->halted) {
if (!(cs->interrupt_request & CPU_INTERRUPT_HARD)) {
return false;
}
/* External Exception */
if ((env->pending_interrupts & (1u << PPC_INTERRUPT_EXT)) &&
(env->spr[SPR_LPCR] & LPCR_EEE)) {
return true;
}
/* Decrementer Exception */
if ((env->pending_interrupts & (1u << PPC_INTERRUPT_DECR)) &&
(env->spr[SPR_LPCR] & LPCR_DEE)) {
return true;
}
/* Machine Check or Hypervisor Maintenance Exception */
if ((env->pending_interrupts & (1u << PPC_INTERRUPT_MCK |
1u << PPC_INTERRUPT_HMI)) && (env->spr[SPR_LPCR] & LPCR_OEE)) {
return true;
}
/* Privileged Doorbell Exception */
if ((env->pending_interrupts & (1u << PPC_INTERRUPT_DOORBELL)) &&
(env->spr[SPR_LPCR] & LPCR_PDEE)) {
return true;
}
/* Hypervisor Doorbell Exception */
if ((env->pending_interrupts & (1u << PPC_INTERRUPT_HDOORBELL)) &&
(env->spr[SPR_LPCR] & LPCR_HDEE)) {
return true;
}
if (env->pending_interrupts & (1u << PPC_INTERRUPT_RESET)) {
return true;
}
return false;
} else {
return msr_ee && (cs->interrupt_request & CPU_INTERRUPT_HARD);
}
}
POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
CPUClass *cc = CPU_CLASS(oc);
dc->fw_name = "PowerPC,POWER9";
dc->desc = "POWER9";
@ -8872,6 +8916,7 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
PCR_COMPAT_2_05;
pcc->init_proc = init_proc_POWER9;
pcc->check_pow = check_pow_nocheck;
cc->has_work = cpu_has_work_POWER9;
pcc->insns_flags = PPC_INSNS_BASE | PPC_ISEL | PPC_STRING | PPC_MFTB |
PPC_FLOAT | PPC_FLOAT_FSEL | PPC_FLOAT_FRES |
PPC_FLOAT_FSQRT | PPC_FLOAT_FRSQRTE |