#if !defined(HVM_MAX_VCPUS)
# error HVM_MAX_VCPUS not defined
#endif
+int main(void) {
+ xc_interface *xc;
+ xs_daemon_open();
+ xc = xc_interface_open(0, 0, 0);
+ xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
+ xc_gnttab_open(NULL, 0);
+ xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
+ xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
+ xc_hvm_create_ioreq_server(xc, 0, 0, NULL);
+ return 0;
+}
+EOF
+ compile_prog "" "$xen_libs"
+ then
+ xen_ctrl_version=450
+ xen=yes
+
+ elif
+ cat > $TMPC <<EOF &&
+#include <xenctrl.h>
+#include <xenstore.h>
+#include <stdint.h>
+#include <xen/hvm/hvm_info_table.h>
+#if !defined(HVM_MAX_VCPUS)
+# error HVM_MAX_VCPUS not defined
+#endif
int main(void) {
xc_interface *xc;
xs_daemon_open();
echo "Target Sparc Arch $sparc_cpu"
fi
echo "xen support $xen"
+if test "$xen" = "yes" ; then
+ echo "xen ctrl version $xen_ctrl_version"
+fi
echo "brlapi support $brlapi"
echo "bluez support $bluez"
echo "Documentation $docs"
return 0;
}
+static QTAILQ_HEAD(device_listeners, DeviceListener) device_listeners
+ = QTAILQ_HEAD_INITIALIZER(device_listeners);
+
+enum ListenerDirection { Forward, Reverse };
+
+#define DEVICE_LISTENER_CALL(_callback, _direction, _args...) \
+ do { \
+ DeviceListener *_listener; \
+ \
+ switch (_direction) { \
+ case Forward: \
+ QTAILQ_FOREACH(_listener, &device_listeners, link) { \
+ if (_listener->_callback) { \
+ _listener->_callback(_listener, ##_args); \
+ } \
+ } \
+ break; \
+ case Reverse: \
+ QTAILQ_FOREACH_REVERSE(_listener, &device_listeners, \
+ device_listeners, link) { \
+ if (_listener->_callback) { \
+ _listener->_callback(_listener, ##_args); \
+ } \
+ } \
+ break; \
+ default: \
+ abort(); \
+ } \
+ } while (0)
+
+static int device_listener_add(DeviceState *dev, void *opaque)
+{
+ DEVICE_LISTENER_CALL(realize, Forward, dev);
+
+ return 0;
+}
+
+void device_listener_register(DeviceListener *listener)
+{
+ QTAILQ_INSERT_TAIL(&device_listeners, listener, link);
+
+ qbus_walk_children(sysbus_get_default(), NULL, NULL, device_listener_add,
+ NULL, NULL);
+}
+
+void device_listener_unregister(DeviceListener *listener)
+{
+ QTAILQ_REMOVE(&device_listeners, listener, link);
+}
+
static void device_realize(DeviceState *dev, Error **errp)
{
DeviceClass *dc = DEVICE_GET_CLASS(dev);
goto fail;
}
+ DEVICE_LISTENER_CALL(realize, Forward, dev);
+
hotplug_ctrl = qdev_get_hotplug_handler(dev);
if (hotplug_ctrl) {
hotplug_handler_plug(hotplug_ctrl, dev, &local_err);
dc->unrealize(dev, local_errp);
}
dev->pending_deleted_event = true;
+ DEVICE_LISTENER_CALL(unrealize, Reverse, dev);
}
if (local_err != NULL) {
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)
{
return bus->hotplug_handler;
}
+
+void device_listener_register(DeviceListener *listener);
+void device_listener_unregister(DeviceListener *listener);
+
#endif
#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.
}
#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, ¶m);
+ 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, ¶m);
+ 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,
+ ¶m);
+ 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 */
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;
# xen-hvm.c
xen_ram_alloc(unsigned long ram_addr, unsigned long size) "requested: %#lx, size %#lx"
xen_client_set_memory(uint64_t start_addr, unsigned long size, bool log_dirty) "%#"PRIx64" size %#lx, log_dirty %i"
+xen_ioreq_server_create(uint32_t id) "id: %u"
+xen_ioreq_server_destroy(uint32_t id) "id: %u"
+xen_ioreq_server_state(uint32_t id, bool enable) "id: %u: enable: %i"
+xen_map_mmio_range(uint32_t id, uint64_t start_addr, uint64_t end_addr) "id: %u start: %#"PRIx64" end: %#"PRIx64
+xen_unmap_mmio_range(uint32_t id, uint64_t start_addr, uint64_t end_addr) "id: %u start: %#"PRIx64" end: %#"PRIx64
+xen_map_portio_range(uint32_t id, uint64_t start_addr, uint64_t end_addr) "id: %u start: %#"PRIx64" end: %#"PRIx64
+xen_unmap_portio_range(uint32_t id, uint64_t start_addr, uint64_t end_addr) "id: %u start: %#"PRIx64" end: %#"PRIx64
+xen_map_pcidev(uint32_t id, uint8_t bus, uint8_t dev, uint8_t func) "id: %u bdf: %02x.%02x.%02x"
+xen_unmap_pcidev(uint32_t id, uint8_t bus, uint8_t dev, uint8_t func) "id: %u bdf: %02x.%02x.%02x"
# xen-mapcache.c
xen_map_cache(uint64_t phys_addr) "want %#"PRIx64
}
# define FMT_ioreq_size "u"
#endif
-#ifndef HVM_PARAM_BUFIOREQ_EVTCHN
-#define HVM_PARAM_BUFIOREQ_EVTCHN 26
-#endif
#define BUFFER_IO_MAX_DELAY 100
/* Leave some slack so that hvmloader does not complain about lack of
} XenPhysmap;
typedef struct XenIOState {
+ ioservid_t ioservid;
shared_iopage_t *shared_page;
shared_vmport_iopage_t *shared_vmport_page;
buffered_iopage_t *buffered_io_page;
struct xs_handle *xenstore;
MemoryListener memory_listener;
+ MemoryListener io_listener;
+ DeviceListener device_listener;
QLIST_HEAD(, XenPhysmap) physmap;
hwaddr free_phys_offset;
const XenPhysmap *log_for_dirtybit;
bool log_dirty = memory_region_is_logging(section->mr);
hvmmem_type_t mem_type;
+ if (section->mr == &ram_memory) {
+ return;
+ } else {
+ if (add) {
+ xen_map_memory_section(xen_xc, xen_domid, state->ioservid,
+ section);
+ } else {
+ xen_unmap_memory_section(xen_xc, xen_domid, state->ioservid,
+ section);
+ }
+ }
+
if (!memory_region_is_ram(section->mr)) {
return;
}
- if (!(section->mr != &ram_memory
- && ( (log_dirty && add) || (!log_dirty && !add)))) {
+ if (log_dirty != add) {
return;
}
memory_region_unref(section->mr);
}
+static void xen_io_add(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ XenIOState *state = container_of(listener, XenIOState, io_listener);
+
+ memory_region_ref(section->mr);
+
+ xen_map_io_section(xen_xc, xen_domid, state->ioservid, section);
+}
+
+static void xen_io_del(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ XenIOState *state = container_of(listener, XenIOState, io_listener);
+
+ xen_unmap_io_section(xen_xc, xen_domid, state->ioservid, section);
+
+ memory_region_unref(section->mr);
+}
+
+static void xen_device_realize(DeviceListener *listener,
+ DeviceState *dev)
+{
+ XenIOState *state = container_of(listener, XenIOState, device_listener);
+
+ if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+ PCIDevice *pci_dev = PCI_DEVICE(dev);
+
+ xen_map_pcidev(xen_xc, xen_domid, state->ioservid, pci_dev);
+ }
+}
+
+static void xen_device_unrealize(DeviceListener *listener,
+ DeviceState *dev)
+{
+ XenIOState *state = container_of(listener, XenIOState, device_listener);
+
+ if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+ PCIDevice *pci_dev = PCI_DEVICE(dev);
+
+ xen_unmap_pcidev(xen_xc, xen_domid, state->ioservid, pci_dev);
+ }
+}
+
static void xen_sync_dirty_bitmap(XenIOState *state,
hwaddr start_addr,
ram_addr_t size)
.priority = 10,
};
+static MemoryListener xen_io_listener = {
+ .region_add = xen_io_add,
+ .region_del = xen_io_del,
+ .priority = 10,
+};
+
+static DeviceListener xen_device_listener = {
+ .realize = xen_device_realize,
+ .unrealize = xen_device_unrealize,
+};
+
/* get the ioreq packets from share mem */
static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
{
case IOREQ_TYPE_INVALIDATE:
xen_invalidate_map_cache();
break;
+ case IOREQ_TYPE_PCI_CONFIG: {
+ uint32_t sbdf = req->addr >> 32;
+ uint32_t val;
+
+ /* Fake a write to port 0xCF8 so that
+ * the config space access will target the
+ * correct device model.
+ */
+ val = (1u << 31) |
+ ((req->addr & 0x0f00) << 16) |
+ ((sbdf & 0xffff) << 8) |
+ (req->addr & 0xfc);
+ do_outp(0xcf8, 4, val);
+
+ /* Now issue the config space access via
+ * port 0xCFC
+ */
+ req->addr = 0xcfc | (req->addr & 0x03);
+ cpu_ioreq_pio(req);
+ break;
+ }
default:
hw_error("Invalid ioreq type 0x%x\n", req->type);
}
static void xen_hvm_change_state_handler(void *opaque, int running,
RunState rstate)
{
+ XenIOState *state = opaque;
+
if (running) {
- xen_main_loop_prepare((XenIOState *)opaque);
+ xen_main_loop_prepare(state);
}
+
+ xen_set_ioreq_server_state(xen_xc, xen_domid,
+ state->ioservid,
+ (rstate == RUN_STATE_RUNNING));
}
static void xen_exit_notifier(Notifier *n, void *data)
MemoryRegion **ram_memory)
{
int i, rc;
- unsigned long ioreq_pfn;
- unsigned long bufioreq_evtchn;
+ xen_pfn_t ioreq_pfn;
+ xen_pfn_t bufioreq_pfn;
+ evtchn_port_t bufioreq_evtchn;
XenIOState *state;
state = g_malloc0(sizeof (XenIOState));
return -1;
}
+ rc = xen_create_ioreq_server(xen_xc, xen_domid, &state->ioservid);
+ if (rc < 0) {
+ perror("xen: ioreq server create");
+ return -1;
+ }
+
state->exit.notify = xen_exit_notifier;
qemu_add_exit_notifier(&state->exit);
state->wakeup.notify = xen_wakeup_notifier;
qemu_register_wakeup_notifier(&state->wakeup);
- xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_IOREQ_PFN, &ioreq_pfn);
+ rc = xen_get_ioreq_server_info(xen_xc, xen_domid, state->ioservid,
+ &ioreq_pfn, &bufioreq_pfn,
+ &bufioreq_evtchn);
+ if (rc < 0) {
+ hw_error("failed to get ioreq server info: error %d handle=" XC_INTERFACE_FMT,
+ errno, xen_xc);
+ }
+
DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
+ DPRINTF("buffered io page at pfn %lx\n", bufioreq_pfn);
+ DPRINTF("buffered io evtchn is %x\n", bufioreq_evtchn);
+
state->shared_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE,
PROT_READ|PROT_WRITE, ioreq_pfn);
if (state->shared_page == NULL) {
hw_error("get vmport regs pfn returned error %d, rc=%d", errno, rc);
}
- xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_PFN, &ioreq_pfn);
- DPRINTF("buffered io page at pfn %lx\n", ioreq_pfn);
- state->buffered_io_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE,
- PROT_READ|PROT_WRITE, ioreq_pfn);
+ state->buffered_io_page = xc_map_foreign_range(xen_xc, xen_domid,
+ XC_PAGE_SIZE,
+ PROT_READ|PROT_WRITE,
+ bufioreq_pfn);
if (state->buffered_io_page == NULL) {
hw_error("map buffered IO page returned error %d", errno);
}
/* Note: cpus is empty at this point in init */
state->cpu_by_vcpu_id = g_malloc0(max_cpus * sizeof(CPUState *));
+ rc = xen_set_ioreq_server_state(xen_xc, xen_domid, state->ioservid, true);
+ if (rc < 0) {
+ hw_error("failed to enable ioreq server info: error %d handle=" XC_INTERFACE_FMT,
+ errno, xen_xc);
+ }
+
state->ioreq_local_port = g_malloc0(max_cpus * sizeof (evtchn_port_t));
/* FIXME: how about if we overflow the page here? */
rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid,
xen_vcpu_eport(state->shared_page, i));
if (rc == -1) {
- fprintf(stderr, "bind interdomain ioctl error %d\n", errno);
+ fprintf(stderr, "shared evtchn %d bind error %d\n", i, errno);
return -1;
}
state->ioreq_local_port[i] = rc;
}
- rc = xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_EVTCHN,
- &bufioreq_evtchn);
- if (rc < 0) {
- fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
- return -1;
- }
rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid,
- (uint32_t)bufioreq_evtchn);
+ bufioreq_evtchn);
if (rc == -1) {
- fprintf(stderr, "bind interdomain ioctl error %d\n", errno);
+ fprintf(stderr, "buffered evtchn bind error %d\n", errno);
return -1;
}
state->bufioreq_local_port = rc;
memory_listener_register(&state->memory_listener, &address_space_memory);
state->log_for_dirtybit = NULL;
+ state->io_listener = xen_io_listener;
+ memory_listener_register(&state->io_listener, &address_space_io);
+
+ state->device_listener = xen_device_listener;
+ device_listener_register(&state->device_listener);
+
/* Initialize backend core & drivers */
if (xen_be_init() != 0) {
fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__);
*/
#define NON_MCACHE_MEMORY_SIZE (80 * 1024 * 1024)
-#define mapcache_lock() ((void)0)
-#define mapcache_unlock() ((void)0)
-
typedef struct MapCacheEntry {
hwaddr paddr_index;
uint8_t *vaddr_base;
unsigned int mcache_bucket_shift;
phys_offset_to_gaddr_t phys_offset_to_gaddr;
+ QemuMutex lock;
void *opaque;
} MapCache;
static MapCache *mapcache;
+static inline void mapcache_lock(void)
+{
+ qemu_mutex_lock(&mapcache->lock);
+}
+
+static inline void mapcache_unlock(void)
+{
+ qemu_mutex_unlock(&mapcache->lock);
+}
+
static inline int test_bits(int nr, int size, const unsigned long *addr)
{
unsigned long res = find_next_zero_bit(addr, size + nr, nr);
mapcache->phys_offset_to_gaddr = f;
mapcache->opaque = opaque;
+ qemu_mutex_init(&mapcache->lock);
QTAILQ_INIT(&mapcache->locked_entries);
g_free(err);
}
-uint8_t *xen_map_cache(hwaddr phys_addr, hwaddr size,
- uint8_t lock)
+static uint8_t *xen_map_cache_unlocked(hwaddr phys_addr, hwaddr size,
+ uint8_t lock)
{
MapCacheEntry *entry, *pentry = NULL;
hwaddr address_index;
hwaddr address_offset;
- hwaddr __size = size;
- hwaddr __test_bit_size = size;
+ hwaddr cache_size = size;
+ hwaddr test_bit_size;
bool translated = false;
tryagain:
trace_xen_map_cache(phys_addr);
- /* __test_bit_size is always a multiple of XC_PAGE_SIZE */
+ /* test_bit_size is always a multiple of XC_PAGE_SIZE */
if (size) {
- __test_bit_size = size + (phys_addr & (XC_PAGE_SIZE - 1));
+ test_bit_size = size + (phys_addr & (XC_PAGE_SIZE - 1));
- if (__test_bit_size % XC_PAGE_SIZE) {
- __test_bit_size += XC_PAGE_SIZE - (__test_bit_size % XC_PAGE_SIZE);
+ if (test_bit_size % XC_PAGE_SIZE) {
+ test_bit_size += XC_PAGE_SIZE - (test_bit_size % XC_PAGE_SIZE);
}
} else {
- __test_bit_size = XC_PAGE_SIZE;
+ test_bit_size = XC_PAGE_SIZE;
}
if (mapcache->last_entry != NULL &&
mapcache->last_entry->paddr_index == address_index &&
- !lock && !__size &&
+ !lock && !size &&
test_bits(address_offset >> XC_PAGE_SHIFT,
- __test_bit_size >> XC_PAGE_SHIFT,
+ test_bit_size >> XC_PAGE_SHIFT,
mapcache->last_entry->valid_mapping)) {
trace_xen_map_cache_return(mapcache->last_entry->vaddr_base + address_offset);
return mapcache->last_entry->vaddr_base + address_offset;
/* size is always a multiple of MCACHE_BUCKET_SIZE */
if (size) {
- __size = size + address_offset;
- if (__size % MCACHE_BUCKET_SIZE) {
- __size += MCACHE_BUCKET_SIZE - (__size % MCACHE_BUCKET_SIZE);
+ cache_size = size + address_offset;
+ if (cache_size % MCACHE_BUCKET_SIZE) {
+ cache_size += MCACHE_BUCKET_SIZE - (cache_size % MCACHE_BUCKET_SIZE);
}
} else {
- __size = MCACHE_BUCKET_SIZE;
+ cache_size = MCACHE_BUCKET_SIZE;
}
entry = &mapcache->entry[address_index % mapcache->nr_buckets];
while (entry && entry->lock && entry->vaddr_base &&
- (entry->paddr_index != address_index || entry->size != __size ||
+ (entry->paddr_index != address_index || entry->size != cache_size ||
!test_bits(address_offset >> XC_PAGE_SHIFT,
- __test_bit_size >> XC_PAGE_SHIFT,
+ test_bit_size >> XC_PAGE_SHIFT,
entry->valid_mapping))) {
pentry = entry;
entry = entry->next;
if (!entry) {
entry = g_malloc0(sizeof (MapCacheEntry));
pentry->next = entry;
- xen_remap_bucket(entry, __size, address_index);
+ xen_remap_bucket(entry, cache_size, address_index);
} else if (!entry->lock) {
if (!entry->vaddr_base || entry->paddr_index != address_index ||
- entry->size != __size ||
+ entry->size != cache_size ||
!test_bits(address_offset >> XC_PAGE_SHIFT,
- __test_bit_size >> XC_PAGE_SHIFT,
+ test_bit_size >> XC_PAGE_SHIFT,
entry->valid_mapping)) {
- xen_remap_bucket(entry, __size, address_index);
+ xen_remap_bucket(entry, cache_size, address_index);
}
}
if(!test_bits(address_offset >> XC_PAGE_SHIFT,
- __test_bit_size >> XC_PAGE_SHIFT,
+ test_bit_size >> XC_PAGE_SHIFT,
entry->valid_mapping)) {
mapcache->last_entry = NULL;
if (!translated && mapcache->phys_offset_to_gaddr) {
return mapcache->last_entry->vaddr_base + address_offset;
}
+uint8_t *xen_map_cache(hwaddr phys_addr, hwaddr size,
+ uint8_t lock)
+{
+ uint8_t *p;
+
+ mapcache_lock();
+ p = xen_map_cache_unlocked(phys_addr, size, lock);
+ mapcache_unlock();
+ return p;
+}
+
ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
{
MapCacheEntry *entry = NULL;
MapCacheRev *reventry;
hwaddr paddr_index;
hwaddr size;
+ ram_addr_t raddr;
int found = 0;
+ mapcache_lock();
QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) {
if (reventry->vaddr_req == ptr) {
paddr_index = reventry->paddr_index;
}
if (!entry) {
DPRINTF("Trying to find address %p that is not in the mapcache!\n", ptr);
- return 0;
+ raddr = 0;
+ } else {
+ raddr = (reventry->paddr_index << MCACHE_BUCKET_SHIFT) +
+ ((unsigned long) ptr - (unsigned long) entry->vaddr_base);
}
- return (reventry->paddr_index << MCACHE_BUCKET_SHIFT) +
- ((unsigned long) ptr - (unsigned long) entry->vaddr_base);
+ mapcache_unlock();
+ return raddr;
}
-void xen_invalidate_map_cache_entry(uint8_t *buffer)
+static void xen_invalidate_map_cache_entry_unlocked(uint8_t *buffer)
{
MapCacheEntry *entry = NULL, *pentry = NULL;
MapCacheRev *reventry;
g_free(entry);
}
+void xen_invalidate_map_cache_entry(uint8_t *buffer)
+{
+ mapcache_lock();
+ xen_invalidate_map_cache_entry_unlocked(buffer);
+ mapcache_unlock();
+}
+
void xen_invalidate_map_cache(void)
{
unsigned long i;
/* Flush pending AIO before destroying the mapcache */
bdrv_drain_all();
+ mapcache_lock();
+
QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) {
DPRINTF("There should be no locked mappings at this time, "
"but "TARGET_FMT_plx" -> %p is present\n",
reventry->paddr_index, reventry->vaddr_req);
}
- mapcache_lock();
-
for (i = 0; i < mapcache->nr_buckets; i++) {
MapCacheEntry *entry = &mapcache->entry[i];
projects / mirror_qemu.git / commitdiff