apb: remove pci_apb_init() and instantiate APB device using qdev

By making the special_base and mem_base values qdev properties, we can move
the remaining parts of pci_apb_init() into the pbm init() and realize()
functions.

This finally allows us to instantiate the APB directly using standard qdev
create/init functions in sun4u.c.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Artyom Tarasenko <atar4qemu@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

3 files changed, 68 insertions, 66 deletions

diff --git a/hw/pci-host/apb.c b/hw/pci-host/apb.c
index 823661a8a6..787be744a2 100644
--- a/hw/pci-host/apb.c
+++ b/hw/pci-host/apb.c
@@ -611,41 +611,62 @@ static void apb_pci_bridge_realize(PCIDevice *dev, Error **errp)
     pci_bridge_update_mappings(PCI_BRIDGE(br));
 }
 
-APBState *pci_apb_init(hwaddr special_base,
-                       hwaddr mem_base)
+static void pci_pbm_reset(DeviceState *d)
 {
-    DeviceState *dev;
-    SysBusDevice *s;
-    PCIHostState *phb;
-    APBState *d;
-    IOMMUState *is;
+    unsigned int i;
+    APBState *s = APB_DEVICE(d);
+
+    for (i = 0; i < 8; i++) {
+        s->pci_irq_map[i] &= PBM_PCI_IMR_MASK;
+    }
+    for (i = 0; i < 32; i++) {
+        s->obio_irq_map[i] &= PBM_PCI_IMR_MASK;
+    }
+
+    s->irq_request = NO_IRQ_REQUEST;
+    s->pci_irq_in = 0ULL;
+
+    if (s->nr_resets++ == 0) {
+        /* Power on reset */
+        s->reset_control = POR;
+    }
+}
+
+static const MemoryRegionOps pci_config_ops = {
+    .read = apb_pci_config_read,
+    .write = apb_pci_config_write,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+static void pci_pbm_realize(DeviceState *dev, Error **errp)
+{
+    APBState *s = APB_DEVICE(dev);
+    PCIHostState *phb = PCI_HOST_BRIDGE(dev);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(s);
     PCIDevice *pci_dev;
+    IOMMUState *is;
 
-    /* Ultrasparc PBM main bus */
-    dev = qdev_create(NULL, TYPE_APB);
-    d = APB_DEVICE(dev);
-    phb = PCI_HOST_BRIDGE(dev);
-    phb->bus = pci_register_bus(DEVICE(phb), "pci",
-                                pci_apb_set_irq, pci_apb_map_irq, d,
-                                &d->pci_mmio,
-                                &d->pci_ioport,
-                                0, 32, TYPE_PCI_BUS);
-    qdev_init_nofail(dev);
-    s = SYS_BUS_DEVICE(dev);
     /* apb_config */
-    sysbus_mmio_map(s, 0, special_base);
+    sysbus_mmio_map(sbd, 0, s->special_base);
     /* PCI configuration space */
-    sysbus_mmio_map(s, 1, special_base + 0x1000000ULL);
+    sysbus_mmio_map(sbd, 1, s->special_base + 0x1000000ULL);
     /* pci_ioport */
-    sysbus_mmio_map(s, 2, special_base + 0x2000000ULL);
+    sysbus_mmio_map(sbd, 2, s->special_base + 0x2000000ULL);
 
-    memory_region_init(&d->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL);
-    memory_region_add_subregion(get_system_memory(), mem_base, &d->pci_mmio);
+    memory_region_init(&s->pci_mmio, OBJECT(s), "pci-mmio", 0x100000000ULL);
+    memory_region_add_subregion(get_system_memory(), s->mem_base,
+                                &s->pci_mmio);
+
+    phb->bus = pci_register_bus(dev, "pci",
+                                pci_apb_set_irq, pci_apb_map_irq, s,
+                                &s->pci_mmio,
+                                &s->pci_ioport,
+                                0, 32, TYPE_PCI_BUS);
 
     pci_create_simple(phb->bus, 0, "pbm-pci");
 
     /* APB IOMMU */
-    is = &d->iommu;
+    is = &s->iommu;
     memset(is, 0, sizeof(IOMMUState));
 
     memory_region_init_iommu(&is->iommu, sizeof(is->iommu),
@@ -657,51 +678,22 @@ APBState *pci_apb_init(hwaddr special_base,
     /* APB secondary busses */
     pci_dev = pci_create_multifunction(phb->bus, PCI_DEVFN(1, 0), true,
                                    TYPE_PBM_PCI_BRIDGE);
-    d->bridgeB = PCI_BRIDGE(pci_dev);
-    pci_bridge_map_irq(d->bridgeB, "pciB", pci_pbm_map_irq);
+    s->bridgeB = PCI_BRIDGE(pci_dev);
+    pci_bridge_map_irq(s->bridgeB, "pciB", pci_pbm_map_irq);
     qdev_init_nofail(&pci_dev->qdev);
 
     pci_dev = pci_create_multifunction(phb->bus, PCI_DEVFN(1, 1), true,
                                    TYPE_PBM_PCI_BRIDGE);
-    d->bridgeA = PCI_BRIDGE(pci_dev);
-    pci_bridge_map_irq(d->bridgeA, "pciA", pci_pbm_map_irq);
+    s->bridgeA = PCI_BRIDGE(pci_dev);
+    pci_bridge_map_irq(s->bridgeA, "pciA", pci_pbm_map_irq);
     qdev_prop_set_bit(DEVICE(pci_dev), "busA", true);
     qdev_init_nofail(&pci_dev->qdev);
-
-    return d;
-}
-
-static void pci_pbm_reset(DeviceState *d)
-{
-    unsigned int i;
-    APBState *s = APB_DEVICE(d);
-
-    for (i = 0; i < 8; i++) {
-        s->pci_irq_map[i] &= PBM_PCI_IMR_MASK;
-    }
-    for (i = 0; i < 32; i++) {
-        s->obio_irq_map[i] &= PBM_PCI_IMR_MASK;
-    }
-
-    s->irq_request = NO_IRQ_REQUEST;
-    s->pci_irq_in = 0ULL;
-
-    if (s->nr_resets++ == 0) {
-        /* Power on reset */
-        s->reset_control = POR;
-    }
 }
 
-static const MemoryRegionOps pci_config_ops = {
-    .read = apb_pci_config_read,
-    .write = apb_pci_config_write,
-    .endianness = DEVICE_LITTLE_ENDIAN,
-};
-
-static int pci_pbm_init_device(DeviceState *dev)
+static void pci_pbm_init(Object *obj)
 {
-    APBState *s = APB_DEVICE(dev);
-    SysBusDevice *sbd = SYS_BUS_DEVICE(s);
+    APBState *s = APB_DEVICE(obj);
+    SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
     unsigned int i;
 
     for (i = 0; i < 8; i++) {
@@ -734,8 +726,6 @@ static int pci_pbm_init_device(DeviceState *dev)
 
     /* at region 2 */
     sysbus_init_mmio(sbd, &s->pci_ioport);
-
-    return 0;
 }
 
 static void pbm_pci_host_realize(PCIDevice *d, Error **errp)
@@ -774,12 +764,19 @@ static const TypeInfo pbm_pci_host_info = {
     },
 };
 
+static Property pbm_pci_host_properties[] = {
+    DEFINE_PROP_UINT64("special-base", APBState, special_base, 0),
+    DEFINE_PROP_UINT64("mem-base", APBState, mem_base, 0),
+    DEFINE_PROP_END_OF_LIST(),
+};
+
 static void pbm_host_class_init(ObjectClass *klass, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
 
-    dc->init = pci_pbm_init_device;
+    dc->realize = pci_pbm_realize;
     dc->reset = pci_pbm_reset;
+    dc->props = pbm_pci_host_properties;
     set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
 }
 
@@ -787,6 +784,7 @@ static const TypeInfo pbm_host_info = {
     .name          = TYPE_APB,
     .parent        = TYPE_PCI_HOST_BRIDGE,
     .instance_size = sizeof(APBState),
+    .instance_init = pci_pbm_init,
     .class_init    = pbm_host_class_init,
 };
 
diff --git a/hw/sparc64/sun4u.c b/hw/sparc64/sun4u.c
index 47952befcb..0a30fb8d08 100644
--- a/hw/sparc64/sun4u.c
+++ b/hw/sparc64/sun4u.c
@@ -502,7 +502,11 @@ static void sun4uv_init(MemoryRegion *address_space_mem,
 
     prom_init(hwdef->prom_addr, bios_name);
 
-    apb = pci_apb_init(APB_SPECIAL_BASE, APB_MEM_BASE);
+    /* Init APB (PCI host bridge) */
+    apb = APB_DEVICE(qdev_create(NULL, TYPE_APB));
+    qdev_prop_set_uint64(DEVICE(apb), "special-base", APB_SPECIAL_BASE);
+    qdev_prop_set_uint64(DEVICE(apb), "mem-base", APB_MEM_BASE);
+    qdev_init_nofail(DEVICE(apb));
 
     /* Wire up PCI interrupts to CPU */
     for (i = 0; i < IVEC_MAX; i++) {
diff --git a/include/hw/pci-host/apb.h b/include/hw/pci-host/apb.h
index ae15d8ce59..f0074f7a51 100644
--- a/include/hw/pci-host/apb.h
+++ b/include/hw/pci-host/apb.h
@@ -62,6 +62,8 @@ typedef struct IOMMUState {
 typedef struct APBState {
     PCIHostState parent_obj;
 
+    hwaddr special_base;
+    hwaddr mem_base;
     MemoryRegion apb_config;
     MemoryRegion pci_config;
     MemoryRegion pci_mmio;
@@ -93,6 +95,4 @@ typedef struct PBMPCIBridge {
 #define PBM_PCI_BRIDGE(obj) \
     OBJECT_CHECK(PBMPCIBridge, (obj), TYPE_PBM_PCI_BRIDGE)
 
-APBState *pci_apb_init(hwaddr special_base,
-                       hwaddr mem_base);
 #endif