diff options
| -rw-r--r-- | drivers/irqchip/irq-apple-aic.c | 55 |
1 files changed, 42 insertions, 13 deletions
diff --git a/drivers/irqchip/irq-apple-aic.c b/drivers/irqchip/irq-apple-aic.c index ae3437f03e6c..09fd52d91e45 100644 --- a/drivers/irqchip/irq-apple-aic.c +++ b/drivers/irqchip/irq-apple-aic.c @@ -210,7 +210,6 @@ FIELD_PREP(AIC_EVENT_NUM, x)) #define AIC_HWIRQ_IRQ(x) FIELD_GET(AIC_EVENT_NUM, x) #define AIC_HWIRQ_DIE(x) FIELD_GET(AIC_EVENT_DIE, x) -#define AIC_NR_FIQ 6 #define AIC_NR_SWIPI 32 /* @@ -222,11 +221,18 @@ * running at EL2 (with VHE). When the kernel is running at EL1, the * mapping differs and aic_irq_domain_translate() performs the remapping. */ - -#define AIC_TMR_EL0_PHYS AIC_TMR_HV_PHYS -#define AIC_TMR_EL0_VIRT AIC_TMR_HV_VIRT -#define AIC_TMR_EL02_PHYS AIC_TMR_GUEST_PHYS -#define AIC_TMR_EL02_VIRT AIC_TMR_GUEST_VIRT +enum fiq_hwirq { + /* Must be ordered as in apple-aic.h */ + AIC_TMR_EL0_PHYS = AIC_TMR_HV_PHYS, + AIC_TMR_EL0_VIRT = AIC_TMR_HV_VIRT, + AIC_TMR_EL02_PHYS = AIC_TMR_GUEST_PHYS, + AIC_TMR_EL02_VIRT = AIC_TMR_GUEST_VIRT, + AIC_CPU_PMU_Effi = AIC_CPU_PMU_E, + AIC_CPU_PMU_Perf = AIC_CPU_PMU_P, + /* No need for this to be discovered from DT */ + AIC_VGIC_MI, + AIC_NR_FIQ +}; static DEFINE_STATIC_KEY_TRUE(use_fast_ipi); @@ -384,14 +390,20 @@ static void __exception_irq_entry aic_handle_irq(struct pt_regs *regs) /* * vGIC maintenance interrupts end up here too, so we need to check - * for them separately. This should never trigger if KVM is working - * properly, because it will have already taken care of clearing it - * on guest exit before this handler runs. + * for them separately. It should however only trigger when NV is + * in use, and be cleared when coming back from the handler. */ - if (is_kernel_in_hyp_mode() && (read_sysreg_s(SYS_ICH_HCR_EL2) & ICH_HCR_EN) && - read_sysreg_s(SYS_ICH_MISR_EL2) != 0) { - pr_err_ratelimited("vGIC IRQ fired and not handled by KVM, disabling.\n"); - sysreg_clear_set_s(SYS_ICH_HCR_EL2, ICH_HCR_EN, 0); + if (is_kernel_in_hyp_mode() && + (read_sysreg_s(SYS_ICH_HCR_EL2) & ICH_HCR_EN) && + read_sysreg_s(SYS_ICH_MISR_EL2) != 0) { + generic_handle_domain_irq(aic_irqc->hw_domain, + AIC_FIQ_HWIRQ(AIC_VGIC_MI)); + + if (unlikely((read_sysreg_s(SYS_ICH_HCR_EL2) & ICH_HCR_EN) && + read_sysreg_s(SYS_ICH_MISR_EL2))) { + pr_err_ratelimited("vGIC IRQ fired and not handled by KVM, disabling.\n"); + sysreg_clear_set_s(SYS_ICH_HCR_EL2, ICH_HCR_EN, 0); + } } } @@ -1178,6 +1190,23 @@ static int __init aic_of_ic_init(struct device_node *node, struct device_node *p "irqchip/apple-aic/ipi:starting", aic_init_cpu, NULL); + if (is_kernel_in_hyp_mode()) { + struct irq_fwspec mi = { + .fwnode = of_node_to_fwnode(node), + .param_count = 3, + .param = { + [0] = AIC_FIQ, /* This is a lie */ + [1] = AIC_VGIC_MI, + [2] = IRQ_TYPE_LEVEL_HIGH, + }, + }; + + vgic_info.maint_irq = irq_domain_alloc_irqs(irqc->hw_domain, + 1, NUMA_NO_NODE, + &mi); + WARN_ON(!vgic_info.maint_irq); + } + vgic_set_kvm_info(&vgic_info); pr_info("Initialized with %d/%d IRQs * %d/%d die(s), %d FIQs, %d vIPIs", |