[Qemu-devel] [PATCH v2 12/16] hw/microblaze/zynqmp: Let the SoC manage the IPI devices

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

The Inter Processor Interrupt is a block part of the SoC, not the
"machine" (See Zynq UltraScale+ Device TRM UG1085, "Platform
Management Unit", Power Domains and Islands).

Move the IPI management from the machine to the SoC.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 hw/microblaze/xlnx-zynqmp-pmu.c | 36 +++++++++++++++------------------
 1 file changed, 16 insertions(+), 20 deletions(-)

diff --git a/hw/microblaze/xlnx-zynqmp-pmu.c b/hw/microblaze/xlnx-zynqmp-pmu.c
index eba9945c19b..20e973edf5f 100644
--- a/hw/microblaze/xlnx-zynqmp-pmu.c
+++ b/hw/microblaze/xlnx-zynqmp-pmu.c
@@ -68,6 +68,13 @@ static void xlnx_zynqmp_pmu_soc_init(Object *obj)
 
     sysbus_init_child_obj(obj, "intc", &s->intc, sizeof(s->intc),
                           TYPE_XLNX_PMU_IO_INTC);
+
+    /* Create the IPI device */
+    for (int i = 0; i < XLNX_ZYNQMP_PMU_NUM_IPIS; i++) {
+        object_initialize(&s->ipi[i], sizeof(XlnxZynqMPIPI),
+                          TYPE_XLNX_ZYNQMP_IPI);
+        qdev_set_parent_bus(DEVICE(&s->ipi[i]), sysbus_get_default());
+    }
 }
 
 static void xlnx_zynqmp_pmu_soc_realize(DeviceState *dev, Error **errp)
@@ -113,6 +120,15 @@ static void xlnx_zynqmp_pmu_soc_realize(DeviceState *dev, Error **errp)
     sysbus_mmio_map(SYS_BUS_DEVICE(&s->intc), 0, XLNX_ZYNQMP_PMU_INTC_ADDR);
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->intc), 0,
                        qdev_get_gpio_in(DEVICE(&s->cpu), MB_CPU_IRQ));
+
+    /* Connect the IPI device */
+    for (int i = 0; i < XLNX_ZYNQMP_PMU_NUM_IPIS; i++) {
+        object_property_set_bool(OBJECT(&s->ipi[i]), true, "realized",
+                                 &error_abort);
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->ipi[i]), 0, ipi_addr[i]);
+        sysbus_connect_irq(SYS_BUS_DEVICE(&s->ipi[i]), 0,
+                           qdev_get_gpio_in(DEVICE(&s->intc), ipi_irq[i]));
+    }
 }
 
 static void xlnx_zynqmp_pmu_soc_class_init(ObjectClass *oc, void *data)
@@ -145,8 +161,6 @@ static void xlnx_zynqmp_pmu_init(MachineState *machine)
     MemoryRegion *address_space_mem = get_system_memory();
     MemoryRegion *pmu_rom = g_new(MemoryRegion, 1);
     MemoryRegion *pmu_ram = g_new(MemoryRegion, 1);
-    qemu_irq irq[32];
-    int i;
 
     /* Create the ROM */
     memory_region_init_rom(pmu_rom, NULL, "xlnx-zynqmp-pmu.rom",
@@ -166,24 +180,6 @@ static void xlnx_zynqmp_pmu_init(MachineState *machine)
                               &error_abort);
     object_property_set_bool(OBJECT(pmu), true, "realized", &error_fatal);
 
-    for (i = 0; i < 32; i++) {
-        irq[i] = qdev_get_gpio_in(DEVICE(&pmu->intc), i);
-    }
-
-    /* Create and connect the IPI device */
-    for (i = 0; i < XLNX_ZYNQMP_PMU_NUM_IPIS; i++) {
-        object_initialize(&pmu->ipi[i], sizeof(XlnxZynqMPIPI),
-                          TYPE_XLNX_ZYNQMP_IPI);
-        qdev_set_parent_bus(DEVICE(&pmu->ipi[i]), sysbus_get_default());
-    }
-
-    for (i = 0; i < XLNX_ZYNQMP_PMU_NUM_IPIS; i++) {
-        object_property_set_bool(OBJECT(&pmu->ipi[i]), true, "realized",
-                                 &error_abort);
-        sysbus_mmio_map(SYS_BUS_DEVICE(&pmu->ipi[i]), 0, ipi_addr[i]);
-        sysbus_connect_irq(SYS_BUS_DEVICE(&pmu->ipi[i]), 0, irq[ipi_irq[i]]);
-    }
-
     /* Load the kernel */
     microblaze_load_kernel(&pmu->cpu, XLNX_ZYNQMP_PMU_RAM_ADDR,
                            machine->ram_size,
-- 
2.20.1