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versatile_pci: Use separate PCI I/O space rather than system I/O space

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Rather than overloading the system I/O space (which doesn't even make
any sense on ARM) for PCI I/O, create an memory region in the PCI
controller and use that to represent the I/O space.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Paul Brook <paul@codesourcery.com>
This commit is contained in:
Peter Maydell 2013-04-19 11:15:18 +01:00
parent 0688810b41
commit 967c260749
1 changed files with 13 additions and 4 deletions
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17
hw/pci-host/versatile.c
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@ -19,7 +19,8 @@ typedef struct {
qemu_irq irq[4];
MemoryRegion mem_config;
MemoryRegion mem_config2;
MemoryRegion isa;
MemoryRegion pci_io_space;
MemoryRegion pci_io_window;
PCIBus pci_bus;
PCIDevice pci_dev;
@ -77,8 +78,10 @@ static void pci_vpb_init(Object *obj)
PCIHostState *h = PCI_HOST_BRIDGE(obj);
PCIVPBState *s = PCI_VPB(obj);
memory_region_init(&s->pci_io_space, "pci_io", 1ULL << 32);
pci_bus_new_inplace(&s->pci_bus, DEVICE(obj), "pci",
get_system_memory(), get_system_io(),
get_system_memory(), &s->pci_io_space,
PCI_DEVFN(11, 0), TYPE_PCI_BUS);
h->bus = &s->pci_bus;
@ -111,8 +114,14 @@ static void pci_vpb_realize(DeviceState *dev, Error **errp)
memory_region_init_io(&s->mem_config2, &pci_vpb_config_ops, &s->pci_bus,
"pci-vpb-config", 0x1000000);
sysbus_init_mmio(sbd, &s->mem_config2);
isa_mmio_setup(&s->isa, 0x0100000);
sysbus_init_mmio(sbd, &s->isa);
/* The window into I/O space is always into a fixed base address;
* its size is the same for both realview and versatile.
*/
memory_region_init_alias(&s->pci_io_window, "pci-vbp-io-window",
&s->pci_io_space, 0, 0x100000);
sysbus_init_mmio(sbd, &s->pci_io_space);
/* TODO Remove once realize propagates to child devices. */
object_property_set_bool(OBJECT(&s->pci_dev), true, "realized", errp);