From 1c685a9026349752c3627aa24b090973e35b83c3 Mon Sep 17 00:00:00 2001 From: Greg Kurz Date: Mon, 1 Apr 2019 19:55:02 +0200 Subject: pci: Allow PCI bus subtypes to support extended config space accesses Some PHB implementations, eg. PAPR used on pseries machine, act like a regular PCI bus rather than a PCIe bus, but allow access to the PCIe extended config space anyway. Introduce a new PCI bus class method to modelize this behaviour and use it when adjusting the config space size limit during accesses. No behaviour change for existing PCI bus types. Signed-off-by: Greg Kurz Message-Id: <155414130271.574858.4253514266378127489.stgit@bahia.lan> Signed-off-by: David Gibson --- include/hw/pci/pci.h | 2 ++ include/hw/pci/pci_bus.h | 1 + 2 files changed, 3 insertions(+) (limited to 'include/hw/pci') diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h index d87f5f93e9..0abb06b357 100644 --- a/include/hw/pci/pci.h +++ b/include/hw/pci/pci.h @@ -396,6 +396,8 @@ typedef PCIINTxRoute (*pci_route_irq_fn)(void *opaque, int pin); bool pci_bus_is_express(PCIBus *bus); bool pci_bus_is_root(PCIBus *bus); +bool pci_bus_allows_extended_config_space(PCIBus *bus); + void pci_root_bus_new_inplace(PCIBus *bus, size_t bus_size, DeviceState *parent, const char *name, MemoryRegion *address_space_mem, diff --git a/include/hw/pci/pci_bus.h b/include/hw/pci/pci_bus.h index dfb75752cb..f6df834170 100644 --- a/include/hw/pci/pci_bus.h +++ b/include/hw/pci/pci_bus.h @@ -18,6 +18,7 @@ typedef struct PCIBusClass { bool (*is_root)(PCIBus *bus); int (*bus_num)(PCIBus *bus); uint16_t (*numa_node)(PCIBus *bus); + bool (*allows_extended_config_space)(PCIBus *bus); } PCIBusClass; struct PCIBus { -- cgit v1.2.3-55-g7522