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[Qemu-arm] [PATCH 10/23] target-arm: Expose output GPIO line for VCPU ma

From: Peter Maydell
Subject: [Qemu-arm] [PATCH 10/23] target-arm: Expose output GPIO line for VCPU maintenance interrupt
Date: Tue, 13 Dec 2016 10:36:11 +0000

The GICv3 support for virtualization includes an outbound
maintenance interrupt signal which is asserted when the
CPU interface wants to signal to the hypervisor that it
needs attention. Expose this as an outbound GPIO line from
the CPU object which can be wired up as a physical interrupt
line by the board code (as we do already for the CPU timers).

Signed-off-by: Peter Maydell <address@hidden>
 target-arm/cpu.h | 2 ++
 target-arm/cpu.c | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/target-arm/cpu.h b/target-arm/cpu.h
index ca5c849..c38488a 100644
--- a/target-arm/cpu.h
+++ b/target-arm/cpu.h
@@ -555,6 +555,8 @@ struct ARMCPU {
     QEMUTimer *gt_timer[NUM_GTIMERS];
     /* GPIO outputs for generic timer */
     qemu_irq gt_timer_outputs[NUM_GTIMERS];
+    /* GPIO output for GICv3 maintenance interrupt signal */
+    qemu_irq gicv3_maintenance_interrupt;
     /* MemoryRegion to use for secure physical accesses */
     MemoryRegion *secure_memory;
diff --git a/target-arm/cpu.c b/target-arm/cpu.c
index 99f0dbe..5e0d21d 100644
--- a/target-arm/cpu.c
+++ b/target-arm/cpu.c
@@ -466,6 +466,9 @@ static void arm_cpu_initfn(Object *obj)
                                                 arm_gt_stimer_cb, cpu);
     qdev_init_gpio_out(DEVICE(cpu), cpu->gt_timer_outputs,
+    qdev_init_gpio_out_named(DEVICE(cpu), &cpu->gicv3_maintenance_interrupt,
+                             "gicv3-maintenance-interrupt", 1);
     /* DTB consumers generally don't in fact care what the 'compatible'

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