diff options
Diffstat (limited to 'arch/powerpc/kernel/irq.c')
| -rw-r--r-- | arch/powerpc/kernel/irq.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 58dcac88bc79..0bcec745a672 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -348,6 +348,7 @@ bool prep_irq_for_idle(void) return true; } +#ifdef CONFIG_PPC_BOOK3S /* * This is for idle sequences that return with IRQs off, but the * idle state itself wakes on interrupt. Tell the irq tracer that @@ -379,6 +380,34 @@ bool prep_irq_for_idle_irqsoff(void) } /* + * Take the SRR1 wakeup reason, index into this table to find the + * appropriate irq_happened bit. + */ +static const u8 srr1_to_lazyirq[0x10] = { + 0, 0, 0, + PACA_IRQ_DBELL, + 0, + PACA_IRQ_DBELL, + PACA_IRQ_DEC, + 0, + PACA_IRQ_EE, + PACA_IRQ_EE, + PACA_IRQ_HMI, + 0, 0, 0, 0, 0 }; + +void irq_set_pending_from_srr1(unsigned long srr1) +{ + unsigned int idx = (srr1 & SRR1_WAKEMASK_P8) >> 18; + + /* + * The 0 index (SRR1[42:45]=b0000) must always evaluate to 0, + * so this can be called unconditionally with srr1 wake reason. + */ + local_paca->irq_happened |= srr1_to_lazyirq[idx]; +} +#endif /* CONFIG_PPC_BOOK3S */ + +/* * Force a replay of the external interrupt handler on this CPU. */ void force_external_irq_replay(void) |