Merge remote-tracking branch 'remotes/sstabellini/xen-2015-01-20-v2' into staging

* remotes/sstabellini/xen-2015-01-20-v2:
  xen: add a lock for the mapcache
  xen: do not use __-named variables in mapcache
  Xen: Use the ioreq-server API when available
  Add device listener interface

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3 files changed, 234 insertions, 0 deletions

diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index 589bbe7360..15a226f24a 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -165,6 +165,12 @@ struct DeviceState {
     int alias_required_for_version;
 };
 
+struct DeviceListener {
+    void (*realize)(DeviceListener *listener, DeviceState *dev);
+    void (*unrealize)(DeviceListener *listener, DeviceState *dev);
+    QTAILQ_ENTRY(DeviceListener) link;
+};
+
 #define TYPE_BUS "bus"
 #define BUS(obj) OBJECT_CHECK(BusState, (obj), TYPE_BUS)
 #define BUS_CLASS(klass) OBJECT_CLASS_CHECK(BusClass, (klass), TYPE_BUS)
@@ -376,4 +382,8 @@ static inline bool qbus_is_hotpluggable(BusState *bus)
 {
    return bus->hotplug_handler;
 }
+
+void device_listener_register(DeviceListener *listener);
+void device_listener_unregister(DeviceListener *listener);
+
 #endif
diff --git a/include/hw/xen/xen_common.h b/include/hw/xen/xen_common.h
index 95612a40c1..519696f255 100644
--- a/include/hw/xen/xen_common.h
+++ b/include/hw/xen/xen_common.h
@@ -16,7 +16,9 @@
 
 #include "hw/hw.h"
 #include "hw/xen/xen.h"
+#include "hw/pci/pci.h"
 #include "qemu/queue.h"
+#include "trace.h"
 
 /*
  * We don't support Xen prior to 3.3.0.
@@ -179,4 +181,225 @@ static inline int xen_get_vmport_regs_pfn(XenXC xc, domid_t dom,
 }
 #endif
 
+/* Xen before 4.5 */
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 450
+
+#ifndef HVM_PARAM_BUFIOREQ_EVTCHN
+#define HVM_PARAM_BUFIOREQ_EVTCHN 26
+#endif
+
+#define IOREQ_TYPE_PCI_CONFIG 2
+
+typedef uint32_t ioservid_t;
+
+static inline void xen_map_memory_section(XenXC xc, domid_t dom,
+                                          ioservid_t ioservid,
+                                          MemoryRegionSection *section)
+{
+}
+
+static inline void xen_unmap_memory_section(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid,
+                                            MemoryRegionSection *section)
+{
+}
+
+static inline void xen_map_io_section(XenXC xc, domid_t dom,
+                                      ioservid_t ioservid,
+                                      MemoryRegionSection *section)
+{
+}
+
+static inline void xen_unmap_io_section(XenXC xc, domid_t dom,
+                                        ioservid_t ioservid,
+                                        MemoryRegionSection *section)
+{
+}
+
+static inline void xen_map_pcidev(XenXC xc, domid_t dom,
+                                  ioservid_t ioservid,
+                                  PCIDevice *pci_dev)
+{
+}
+
+static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
+                                    ioservid_t ioservid,
+                                    PCIDevice *pci_dev)
+{
+}
+
+static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
+                                          ioservid_t *ioservid)
+{
+    return 0;
+}
+
+static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid)
+{
+}
+
+static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid,
+                                            xen_pfn_t *ioreq_pfn,
+                                            xen_pfn_t *bufioreq_pfn,
+                                            evtchn_port_t *bufioreq_evtchn)
+{
+    unsigned long param;
+    int rc;
+
+    rc = xc_get_hvm_param(xc, dom, HVM_PARAM_IOREQ_PFN, &param);
+    if (rc < 0) {
+        fprintf(stderr, "failed to get HVM_PARAM_IOREQ_PFN\n");
+        return -1;
+    }
+
+    *ioreq_pfn = param;
+
+    rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_PFN, &param);
+    if (rc < 0) {
+        fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_PFN\n");
+        return -1;
+    }
+
+    *bufioreq_pfn = param;
+
+    rc = xc_get_hvm_param(xc, dom, HVM_PARAM_BUFIOREQ_EVTCHN,
+                          &param);
+    if (rc < 0) {
+        fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
+        return -1;
+    }
+
+    *bufioreq_evtchn = param;
+
+    return 0;
+}
+
+static inline int xen_set_ioreq_server_state(XenXC xc, domid_t dom,
+                                             ioservid_t ioservid,
+                                             bool enable)
+{
+    return 0;
+}
+
+/* Xen 4.5 */
+#else
+
+static inline void xen_map_memory_section(XenXC xc, domid_t dom,
+                                          ioservid_t ioservid,
+                                          MemoryRegionSection *section)
+{
+    hwaddr start_addr = section->offset_within_address_space;
+    ram_addr_t size = int128_get64(section->size);
+    hwaddr end_addr = start_addr + size - 1;
+
+    trace_xen_map_mmio_range(ioservid, start_addr, end_addr);
+    xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 1,
+                                        start_addr, end_addr);
+}
+
+static inline void xen_unmap_memory_section(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid,
+                                            MemoryRegionSection *section)
+{
+    hwaddr start_addr = section->offset_within_address_space;
+    ram_addr_t size = int128_get64(section->size);
+    hwaddr end_addr = start_addr + size - 1;
+
+    trace_xen_unmap_mmio_range(ioservid, start_addr, end_addr);
+    xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 1,
+                                            start_addr, end_addr);
+}
+
+static inline void xen_map_io_section(XenXC xc, domid_t dom,
+                                      ioservid_t ioservid,
+                                      MemoryRegionSection *section)
+{
+    hwaddr start_addr = section->offset_within_address_space;
+    ram_addr_t size = int128_get64(section->size);
+    hwaddr end_addr = start_addr + size - 1;
+
+    trace_xen_map_portio_range(ioservid, start_addr, end_addr);
+    xc_hvm_map_io_range_to_ioreq_server(xc, dom, ioservid, 0,
+                                        start_addr, end_addr);
+}
+
+static inline void xen_unmap_io_section(XenXC xc, domid_t dom,
+                                        ioservid_t ioservid,
+                                        MemoryRegionSection *section)
+{
+    hwaddr start_addr = section->offset_within_address_space;
+    ram_addr_t size = int128_get64(section->size);
+    hwaddr end_addr = start_addr + size - 1;
+
+    trace_xen_unmap_portio_range(ioservid, start_addr, end_addr);
+    xc_hvm_unmap_io_range_from_ioreq_server(xc, dom, ioservid, 0,
+                                            start_addr, end_addr);
+}
+
+static inline void xen_map_pcidev(XenXC xc, domid_t dom,
+                                  ioservid_t ioservid,
+                                  PCIDevice *pci_dev)
+{
+    trace_xen_map_pcidev(ioservid, pci_bus_num(pci_dev->bus),
+                         PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
+    xc_hvm_map_pcidev_to_ioreq_server(xc, dom, ioservid,
+                                      0, pci_bus_num(pci_dev->bus),
+                                      PCI_SLOT(pci_dev->devfn),
+                                      PCI_FUNC(pci_dev->devfn));
+}
+
+static inline void xen_unmap_pcidev(XenXC xc, domid_t dom,
+                                    ioservid_t ioservid,
+                                    PCIDevice *pci_dev)
+{
+    trace_xen_unmap_pcidev(ioservid, pci_bus_num(pci_dev->bus),
+                           PCI_SLOT(pci_dev->devfn), PCI_FUNC(pci_dev->devfn));
+    xc_hvm_unmap_pcidev_from_ioreq_server(xc, dom, ioservid,
+                                          0, pci_bus_num(pci_dev->bus),
+                                          PCI_SLOT(pci_dev->devfn),
+                                          PCI_FUNC(pci_dev->devfn));
+}
+
+static inline int xen_create_ioreq_server(XenXC xc, domid_t dom,
+                                          ioservid_t *ioservid)
+{
+    int rc = xc_hvm_create_ioreq_server(xc, dom, 1, ioservid);
+
+    if (rc == 0) {
+        trace_xen_ioreq_server_create(*ioservid);
+    }
+
+    return rc;
+}
+
+static inline void xen_destroy_ioreq_server(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid)
+{
+    trace_xen_ioreq_server_destroy(ioservid);
+    xc_hvm_destroy_ioreq_server(xc, dom, ioservid);
+}
+
+static inline int xen_get_ioreq_server_info(XenXC xc, domid_t dom,
+                                            ioservid_t ioservid,
+                                            xen_pfn_t *ioreq_pfn,
+                                            xen_pfn_t *bufioreq_pfn,
+                                            evtchn_port_t *bufioreq_evtchn)
+{
+    return xc_hvm_get_ioreq_server_info(xc, dom, ioservid,
+                                        ioreq_pfn, bufioreq_pfn,
+                                        bufioreq_evtchn);
+}
+
+static inline int xen_set_ioreq_server_state(XenXC xc, domid_t dom,
+                                             ioservid_t ioservid,
+                                             bool enable)
+{
+    trace_xen_ioreq_server_state(ioservid, enable);
+    return xc_hvm_set_ioreq_server_state(xc, dom, ioservid, enable);
+}
+
+#endif
+
 #endif /* QEMU_HW_XEN_COMMON_H */
diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h
index f2bbaaf86a..cde3314896 100644
--- a/include/qemu/typedefs.h
+++ b/include/qemu/typedefs.h
@@ -17,6 +17,7 @@ typedef struct BusState BusState;
 typedef struct CharDriverState CharDriverState;
 typedef struct CompatProperty CompatProperty;
 typedef struct DeviceState DeviceState;
+typedef struct DeviceListener DeviceListener;
 typedef struct DisplayChangeListener DisplayChangeListener;
 typedef struct DisplayState DisplayState;
 typedef struct DisplaySurface DisplaySurface;