static bool xen_in_migration;
/* Compatibility with older version */
+
+/* This allows QEMU to build on a system that has Xen 4.5 or earlier
+ * installed. This here (not in hw/xen/xen_common.h) because xen/hvm/ioreq.h
+ * needs to be included before this block and hw/xen/xen_common.h needs to
+ * be included before xen/hvm/ioreq.h
+ */
+#ifndef IOREQ_TYPE_VMWARE_PORT
+#define IOREQ_TYPE_VMWARE_PORT 3
+struct vmware_regs {
+ uint32_t esi;
+ uint32_t edi;
+ uint32_t ebx;
+ uint32_t ecx;
+ uint32_t edx;
+};
+typedef struct vmware_regs vmware_regs_t;
+
+struct shared_vmport_iopage {
+ struct vmware_regs vcpu_vmport_regs[1];
+};
+typedef struct shared_vmport_iopage shared_vmport_iopage_t;
+#endif
+
#if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a
static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
{
typedef struct XenIOState {
shared_iopage_t *shared_page;
+ shared_vmport_iopage_t *shared_vmport_page;
buffered_iopage_t *buffered_io_page;
QEMUTimer *buffered_io_timer;
+ CPUState **cpu_by_vcpu_id;
/* the evtchn port for polling the notification, */
evtchn_port_t *ioreq_local_port;
/* evtchn local port for buffered io */
*/
block_len = (1ULL << 32) + *above_4g_mem_size;
}
- memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len);
+ memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len,
+ &error_abort);
*ram_memory_p = &ram_memory;
vmstate_register_ram_global(&ram_memory);
}
}
-static void handle_ioreq(ioreq_t *req)
+static void regs_to_cpu(vmware_regs_t *vmport_regs, ioreq_t *req)
+{
+ X86CPU *cpu;
+ CPUX86State *env;
+
+ cpu = X86_CPU(current_cpu);
+ env = &cpu->env;
+ env->regs[R_EAX] = req->data;
+ env->regs[R_EBX] = vmport_regs->ebx;
+ env->regs[R_ECX] = vmport_regs->ecx;
+ env->regs[R_EDX] = vmport_regs->edx;
+ env->regs[R_ESI] = vmport_regs->esi;
+ env->regs[R_EDI] = vmport_regs->edi;
+}
+
+static void regs_from_cpu(vmware_regs_t *vmport_regs)
+{
+ X86CPU *cpu = X86_CPU(current_cpu);
+ CPUX86State *env = &cpu->env;
+
+ vmport_regs->ebx = env->regs[R_EBX];
+ vmport_regs->ecx = env->regs[R_ECX];
+ vmport_regs->edx = env->regs[R_EDX];
+ vmport_regs->esi = env->regs[R_ESI];
+ vmport_regs->edi = env->regs[R_EDI];
+}
+
+static void handle_vmport_ioreq(XenIOState *state, ioreq_t *req)
+{
+ vmware_regs_t *vmport_regs;
+
+ assert(state->shared_vmport_page);
+ vmport_regs =
+ &state->shared_vmport_page->vcpu_vmport_regs[state->send_vcpu];
+ QEMU_BUILD_BUG_ON(sizeof(*req) < sizeof(*vmport_regs));
+
+ current_cpu = state->cpu_by_vcpu_id[state->send_vcpu];
+ regs_to_cpu(vmport_regs, req);
+ cpu_ioreq_pio(req);
+ regs_from_cpu(vmport_regs);
+ current_cpu = NULL;
+}
+
+static void handle_ioreq(XenIOState *state, ioreq_t *req)
{
if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
(req->size < sizeof (target_ulong))) {
case IOREQ_TYPE_COPY:
cpu_ioreq_move(req);
break;
+ case IOREQ_TYPE_VMWARE_PORT:
+ handle_vmport_ioreq(state, req);
+ break;
case IOREQ_TYPE_TIMEOFFSET:
break;
case IOREQ_TYPE_INVALIDATE:
req.data |= ((uint64_t)buf_req->data) << 32;
}
- handle_ioreq(&req);
+ handle_ioreq(state, &req);
xen_mb();
state->buffered_io_page->read_pointer += qw ? 2 : 1;
handle_buffered_iopage(state);
if (req) {
- handle_ioreq(req);
+ handle_ioreq(state, req);
if (req->state != STATE_IOREQ_INPROCESS) {
fprintf(stderr, "Badness in I/O request ... not in service?!: "
"%x, ptr: %x, port: %"PRIx64", "
- "data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n",
+ "data: %"PRIx64", count: %" FMT_ioreq_size
+ ", size: %" FMT_ioreq_size
+ ", type: %"FMT_ioreq_size"\n",
req->state, req->data_is_ptr, req->addr,
- req->data, req->count, req->size);
+ req->data, req->count, req->size, req->type);
destroy_hvm_domain(false);
return;
}
state);
if (evtchn_fd != -1) {
+ CPUState *cpu_state;
+
+ DPRINTF("%s: Init cpu_by_vcpu_id\n", __func__);
+ CPU_FOREACH(cpu_state) {
+ DPRINTF("%s: cpu_by_vcpu_id[%d]=%p\n",
+ __func__, cpu_state->cpu_index, cpu_state);
+ state->cpu_by_vcpu_id[cpu_state->cpu_index] = cpu_state;
+ }
qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
}
}
static void xen_hvm_change_state_handler(void *opaque, int running,
RunState rstate)
{
- XenIOState *xstate = opaque;
if (running) {
- xen_main_loop_prepare(xstate);
+ xen_main_loop_prepare((XenIOState *)opaque);
}
}
xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
}
+/* return 0 means OK, or -1 means critical issue -- will exit(1) */
int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size,
MemoryRegion **ram_memory)
{
state->xce_handle = xen_xc_evtchn_open(NULL, 0);
if (state->xce_handle == XC_HANDLER_INITIAL_VALUE) {
perror("xen: event channel open");
- g_free(state);
- return -errno;
+ return -1;
}
state->xenstore = xs_daemon_open();
if (state->xenstore == NULL) {
perror("xen: xenstore open");
- g_free(state);
- return -errno;
+ return -1;
}
state->exit.notify = xen_exit_notifier;
errno, xen_xc);
}
+ rc = xen_get_vmport_regs_pfn(xen_xc, xen_domid, &ioreq_pfn);
+ if (!rc) {
+ DPRINTF("shared vmport page at pfn %lx\n", ioreq_pfn);
+ state->shared_vmport_page =
+ xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE,
+ PROT_READ|PROT_WRITE, ioreq_pfn);
+ if (state->shared_vmport_page == NULL) {
+ hw_error("map shared vmport IO page returned error %d handle="
+ XC_INTERFACE_FMT, errno, xen_xc);
+ }
+ } else if (rc != -ENOSYS) {
+ 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,
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 *));
+
state->ioreq_local_port = g_malloc0(max_cpus * sizeof (evtchn_port_t));
/* FIXME: how about if we overflow the page here? */
/* Initialize backend core & drivers */
if (xen_be_init() != 0) {
fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__);
- exit(1);
+ return -1;
}
xen_be_register("console", &xen_console_ops);
xen_be_register("vkbd", &xen_kbdmouse_ops);
projects / qemu.git / blobdiff