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target/ppc: Add POWER9 external interrupt model

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Adds support for the Hypervisor directed interrupts in addition to the
OS ones.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[clg: - modified the icp_realize() and xive_tctx_realize() to take
        into account explicitely the POWER9 interrupt model
      - introduced a specific power9_set_irq for POWER9 ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190215161648.9600-10-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Benjamin Herrenschmidt 2019-02-15 17:16:47 +01:00 • committed by David Gibson
parent d8ce5fd664
commit 67afe7759d
7 changed files with 61 additions and 2 deletions
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42
hw/ppc/ppc.c
View file

@ -306,6 +306,48 @@ void ppcPOWER7_irq_init(PowerPCCPU *cpu)
env->irq_inputs = (void **)qemu_allocate_irqs(&power7_set_irq, cpu,
POWER7_INPUT_NB);
}
/* POWER9 internal IRQ controller */
static void power9_set_irq(void *opaque, int pin, int level)
{
PowerPCCPU *cpu = opaque;
CPUPPCState *env = &cpu->env;
LOG_IRQ("%s: env %p pin %d level %d\n", __func__,
env, pin, level);
switch (pin) {
case POWER9_INPUT_INT:
/* Level sensitive - active high */
LOG_IRQ("%s: set the external IRQ state to %d\n",
__func__, level);
ppc_set_irq(cpu, PPC_INTERRUPT_EXT, level);
break;
case POWER9_INPUT_HINT:
/* Level sensitive - active high */
LOG_IRQ("%s: set the external IRQ state to %d\n",
__func__, level);
ppc_set_irq(cpu, PPC_INTERRUPT_HVIRT, level);
break;
default:
/* Unknown pin - do nothing */
LOG_IRQ("%s: unknown IRQ pin %d\n", __func__, pin);
return;
}
if (level) {
env->irq_input_state |= 1 << pin;
} else {
env->irq_input_state &= ~(1 << pin);
}
}
void ppcPOWER9_irq_init(PowerPCCPU *cpu)
{
CPUPPCState *env = &cpu->env;
env->irq_inputs = (void **)qemu_allocate_irqs(&power9_set_irq, cpu,
POWER9_INPUT_NB);
}
#endif /* defined(TARGET_PPC64) */
void ppc40x_core_reset(PowerPCCPU *cpu)