From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43778) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YYfa5-0000fS-Do for qemu-devel@nongnu.org; Thu, 19 Mar 2015 14:54:10 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YYfa4-0002Ri-DI for qemu-devel@nongnu.org; Thu, 19 Mar 2015 14:54:09 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48992) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YYfa4-0002RW-6O for qemu-devel@nongnu.org; Thu, 19 Mar 2015 14:54:08 -0400 From: Marcel Apfelbaum Date: Thu, 19 Mar 2015 20:52:48 +0200 Message-Id: <1426791181-23831-14-git-send-email-marcel@redhat.com> In-Reply-To: <1426791181-23831-1-git-send-email-marcel@redhat.com> References: <1426791181-23831-1-git-send-email-marcel@redhat.com> Subject: [Qemu-devel] [PATCH V6 for-2.3 13/26] hw/pci-host: introduce TYPE_PCI_HOST_BRIDGE_SNOOPED interface List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kraxel@redhat.com, mst@redhat.com, quintela@redhat.com, agraf@suse.de, marcel@redhat.com, alex.williamson@redhat.com, kevin@koconnor.net, hare@suse.de, imammedo@redhat.com, amit.shah@redhat.com, pbonzini@redhat.com, leon.alrae@imgtec.com, aurelien@aurel32.net, rth@twiddle.net TYPE_PCI_HOST_BRIDGE_SNOOPED is a special case of host bridge whose configuration registers are snooped by other host bridges to complete their configuration cycles. The interface exposes a list of snooping host bridges that shall be used by the hosts implementing this interface in order to emulate a snooping mechanism. The way that the snooping hosts are registered or how the snooping is implemented are out of the interface scope, it only provides a way to determine if a host bridge has snooping hosts and list them. Signed-off-by: Marcel Apfelbaum --- hw/pci/pci_host.c | 8 ++++++++ include/hw/pci/pci_host.h | 24 ++++++++++++++++++++++++ 2 files changed, 32 insertions(+) diff --git a/hw/pci/pci_host.c b/hw/pci/pci_host.c index 87180c8..288e74c 100644 --- a/hw/pci/pci_host.c +++ b/hw/pci/pci_host.c @@ -180,6 +180,12 @@ static const TypeInfo pci_main_host_interface_info = { .parent = TYPE_INTERFACE, }; +static const TypeInfo pci_host_bridge_snooped_interface_info = { + .name = TYPE_PCI_HOST_BRIDGE_SNOOPED, + .parent = TYPE_INTERFACE, + .class_size = sizeof(PCIHostBridgeSnoopedClass), +}; + static const TypeInfo pci_host_type_info = { .name = TYPE_PCI_HOST_BRIDGE, .parent = TYPE_SYS_BUS_DEVICE, @@ -191,7 +197,9 @@ static const TypeInfo pci_host_type_info = { static void pci_host_register_types(void) { type_register_static(&pci_main_host_interface_info); + type_register_static(&pci_host_bridge_snooped_interface_info); type_register_static(&pci_host_type_info); + } type_init(pci_host_register_types) diff --git a/include/hw/pci/pci_host.h b/include/hw/pci/pci_host.h index 3c72e26..a041919 100644 --- a/include/hw/pci/pci_host.h +++ b/include/hw/pci/pci_host.h @@ -63,6 +63,30 @@ typedef struct PCIHostBridgeClass { const char *(*root_bus_path)(PCIHostState *, PCIBus *); } PCIHostBridgeClass; +/** + * A special case of host bridge whose configuration registers + * are snooped by other host bridges to complete their + * configuration cycles. + */ +#define TYPE_PCI_HOST_BRIDGE_SNOOPED "pci-host-bridge-snooped" +#define TYPE_PCI_HOST_BRIDGE_SNOOPED_CLASS(klass) \ + OBJECT_CLASS_CHECK(PCIHostBridgeSnoopedClass, (klass), \ + TYPE_PCI_HOST_BRIDGE_SNOOPED) +#define PCI_HOST_BRIDGE_SNOOPED_GET_CLASS(obj) \ + OBJECT_GET_CLASS(PCIHostBridgeSnoopedClass, (obj), \ + TYPE_PCI_HOST_BRIDGE_SNOOPED) +#define PCI_HOST_BRIDGE_SNOOPED(obj) \ + INTERFACE_CHECK(PCIHostState, (obj), \ + TYPE_PCI_HOST_BRIDGE_SNOOPED) + +typedef struct PCIHostBridgeSnoopedClass { + /* */ + InterfaceClass parent_class; + + /* */ + GPtrArray *(*snooping_hosts)(PCIHostState *); +} PCIHostBridgeSnoopedClass; + /* common internal helpers for PCI/PCIe hosts, cut off overflows */ void pci_host_config_write_common(PCIDevice *pci_dev, uint32_t addr, uint32_t limit, uint32_t val, uint32_t len); -- 2.1.0