}
# 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
+ * memory at boot time ("Could not allocate order=0 extent").
+ * Once hvmloader is modified to cope with that situation without
+ * printing warning messages, QEMU_SPARE_PAGES can be removed.
+ */
+#define QEMU_SPARE_PAGES 16
typedef struct XenPhysmap {
hwaddr start_addr;
} 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;
unsigned long nr_pfn;
xen_pfn_t *pfn_list;
int i;
+ xc_domaininfo_t info;
+ unsigned long free_pages;
if (runstate_check(RUN_STATE_INMIGRATE)) {
/* RAM already populated in Xen */
pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
}
+ if ((xc_domain_getinfolist(xen_xc, xen_domid, 1, &info) != 1) ||
+ (info.domain != xen_domid)) {
+ hw_error("xc_domain_getinfolist failed");
+ }
+ free_pages = info.max_pages - info.tot_pages;
+ if (free_pages > QEMU_SPARE_PAGES) {
+ free_pages -= QEMU_SPARE_PAGES;
+ } else {
+ free_pages = 0;
+ }
+ if ((free_pages < nr_pfn) &&
+ (xc_domain_setmaxmem(xen_xc, xen_domid,
+ ((info.max_pages + nr_pfn - free_pages)
+ << (XC_PAGE_SHIFT - 10))) < 0)) {
+ hw_error("xc_domain_setmaxmem failed");
+ }
if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0, pfn_list)) {
hw_error("xen: failed to populate ram at " RAM_ADDR_FMT, ram_addr);
}
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__);
projects / mirror_qemu.git / blobdiff