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[Qemu-devel] [PATCH 2/3] move xen-hvm.c to hw/i386/xen/
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From: |
Xu, Anthony |
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Subject: |
[Qemu-devel] [PATCH 2/3] move xen-hvm.c to hw/i386/xen/ |
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Date: |
Wed, 5 Apr 2017 18:39:58 +0000 |
move xen-hvm.c to hw/i386/xen/
Signed-off -by: Anthony Xu <address@hidden>
---
Makefile.target | 5 +-
hw/i386/xen/Makefile.objs | 2 +-
hw/i386/xen/trace-events | 11 +
hw/i386/xen/xen-hvm.c | 1422 +++++++++++++++++++++++++++++++++++++++++++++
hw/xen/Makefile.objs | 2 +-
stubs/Makefile.objs | 2 +
stubs/xen-hvm.c | 63 ++
trace-events | 11 -
xen-hvm-stub.c | 63 --
xen-hvm.c | 1422 ---------------------------------------------
10 files changed, 1501 insertions(+), 1502 deletions(-)
create mode 100644 hw/i386/xen/xen-hvm.c
create mode 100644 stubs/xen-hvm.c
delete mode 100644 xen-hvm-stub.c
delete mode 100644 xen-hvm.c
diff --git a/Makefile.target b/Makefile.target
index 7df2b8c..d5ff0c7 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -150,10 +150,7 @@ obj-y += migration/ram.o migration/savevm.o
LIBS := $(libs_softmmu) $(LIBS)
# xen support
-obj-$(CONFIG_XEN) += xen-common.o
-obj-$(CONFIG_XEN_I386) += xen-hvm.o xen-mapcache.o
-obj-$(call lnot,$(CONFIG_XEN)) += xen-common-stub.o
-obj-$(call lnot,$(CONFIG_XEN_I386)) += xen-hvm-stub.o
+obj-$(CONFIG_XEN_I386) += xen-mapcache.o
# Hardware support
ifeq ($(TARGET_NAME), sparc64)
diff --git a/hw/i386/xen/Makefile.objs b/hw/i386/xen/Makefile.objs
index 801a68d..daf4f53 100644
--- a/hw/i386/xen/Makefile.objs
+++ b/hw/i386/xen/Makefile.objs
@@ -1 +1 @@
-obj-y += xen_platform.o xen_apic.o xen_pvdevice.o
+obj-y += xen_platform.o xen_apic.o xen_pvdevice.o xen-hvm.o
diff --git a/hw/i386/xen/trace-events b/hw/i386/xen/trace-events
index 321fe60..f25d622 100644
--- a/hw/i386/xen/trace-events
+++ b/hw/i386/xen/trace-events
@@ -4,3 +4,14 @@ xen_platform_log(char *s) "xen platform: %s"
# hw/i386/xen/xen_pvdevice.c
xen_pv_mmio_read(uint64_t addr) "WARNING: read from Xen PV Device MMIO space
(address %"PRIx64")"
xen_pv_mmio_write(uint64_t addr) "WARNING: write to Xen PV Device MMIO space
(address %"PRIx64")"
+
+# 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"
+handle_ioreq(void *req, uint32_t type, uint32_t dir, uint32_t df, uint32_t
data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size)
"I/O=%p type=%d dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d
size=%d"
+handle_ioreq_read(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr,
uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p read
type=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
+handle_ioreq_write(void *req, uint32_t type, uint32_t df, uint32_t
data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size)
"I/O=%p write type=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d
size=%d"
+cpu_ioreq_pio(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr,
uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p pio dir=%d
df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
+cpu_ioreq_pio_read_reg(void *req, uint64_t data, uint64_t addr, uint32_t size)
"I/O=%p pio read reg data=%#"PRIx64" port=%#"PRIx64" size=%d"
+cpu_ioreq_pio_write_reg(void *req, uint64_t data, uint64_t addr, uint32_t
size) "I/O=%p pio write reg data=%#"PRIx64" port=%#"PRIx64" size=%d"
+cpu_ioreq_move(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr,
uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p copy
dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
new file mode 100644
index 0000000..0892361
--- /dev/null
+++ b/hw/i386/xen/xen-hvm.c
@@ -0,0 +1,1422 @@
+/*
+ * Copyright (C) 2010 Citrix Ltd.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+
+#include "qemu/osdep.h"
+
+#include "cpu.h"
+#include "hw/pci/pci.h"
+#include "hw/i386/pc.h"
+#include "hw/i386/apic-msidef.h"
+#include "hw/xen/xen_common.h"
+#include "hw/xen/xen_backend.h"
+#include "qmp-commands.h"
+
+#include "sysemu/char.h"
+#include "qemu/error-report.h"
+#include "qemu/range.h"
+#include "sysemu/xen-mapcache.h"
+#include "trace.h"
+#include "exec/address-spaces.h"
+
+#include <xen/hvm/ioreq.h>
+#include <xen/hvm/params.h>
+#include <xen/hvm/e820.h>
+
+//#define DEBUG_XEN_HVM
+
+#ifdef DEBUG_XEN_HVM
+#define DPRINTF(fmt, ...) \
+ do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
+#else
+#define DPRINTF(fmt, ...) \
+ do { } while (0)
+#endif
+
+static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi;
+static MemoryRegion *framebuffer;
+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
+
+static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
+{
+ return shared_page->vcpu_ioreq[i].vp_eport;
+}
+static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
+{
+ return &shared_page->vcpu_ioreq[vcpu];
+}
+
+#define BUFFER_IO_MAX_DELAY 100
+
+typedef struct XenPhysmap {
+ hwaddr start_addr;
+ ram_addr_t size;
+ const char *name;
+ hwaddr phys_offset;
+
+ QLIST_ENTRY(XenPhysmap) list;
+} 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;
+ 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 */
+ evtchn_port_t bufioreq_local_port;
+ /* the evtchn fd for polling */
+ xenevtchn_handle *xce_handle;
+ /* which vcpu we are serving */
+ int send_vcpu;
+
+ 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;
+
+ Notifier exit;
+ Notifier suspend;
+ Notifier wakeup;
+} XenIOState;
+
+/* Xen specific function for piix pci */
+
+int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
+{
+ return irq_num + ((pci_dev->devfn >> 3) << 2);
+}
+
+void xen_piix3_set_irq(void *opaque, int irq_num, int level)
+{
+ xc_hvm_set_pci_intx_level(xen_xc, xen_domid, 0, 0, irq_num >> 2,
+ irq_num & 3, level);
+}
+
+void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
+{
+ int i;
+
+ /* Scan for updates to PCI link routes (0x60-0x63). */
+ for (i = 0; i < len; i++) {
+ uint8_t v = (val >> (8 * i)) & 0xff;
+ if (v & 0x80) {
+ v = 0;
+ }
+ v &= 0xf;
+ if (((address + i) >= 0x60) && ((address + i) <= 0x63)) {
+ xc_hvm_set_pci_link_route(xen_xc, xen_domid, address + i - 0x60,
v);
+ }
+ }
+}
+
+int xen_is_pirq_msi(uint32_t msi_data)
+{
+ /* If vector is 0, the msi is remapped into a pirq, passed as
+ * dest_id.
+ */
+ return ((msi_data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT) == 0;
+}
+
+void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
+{
+ xc_hvm_inject_msi(xen_xc, xen_domid, addr, data);
+}
+
+static void xen_suspend_notifier(Notifier *notifier, void *data)
+{
+ xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
+}
+
+/* Xen Interrupt Controller */
+
+static void xen_set_irq(void *opaque, int irq, int level)
+{
+ xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level);
+}
+
+qemu_irq *xen_interrupt_controller_init(void)
+{
+ return qemu_allocate_irqs(xen_set_irq, NULL, 16);
+}
+
+/* Memory Ops */
+
+static void xen_ram_init(PCMachineState *pcms,
+ ram_addr_t ram_size, MemoryRegion **ram_memory_p)
+{
+ MemoryRegion *sysmem = get_system_memory();
+ ram_addr_t block_len;
+ uint64_t user_lowmem = object_property_get_int(qdev_get_machine(),
+ PC_MACHINE_MAX_RAM_BELOW_4G,
+ &error_abort);
+
+ /* Handle the machine opt max-ram-below-4g. It is basically doing
+ * min(xen limit, user limit).
+ */
+ if (!user_lowmem) {
+ user_lowmem = HVM_BELOW_4G_RAM_END; /* default */
+ }
+ if (HVM_BELOW_4G_RAM_END <= user_lowmem) {
+ user_lowmem = HVM_BELOW_4G_RAM_END;
+ }
+
+ if (ram_size >= user_lowmem) {
+ pcms->above_4g_mem_size = ram_size - user_lowmem;
+ pcms->below_4g_mem_size = user_lowmem;
+ } else {
+ pcms->above_4g_mem_size = 0;
+ pcms->below_4g_mem_size = ram_size;
+ }
+ if (!pcms->above_4g_mem_size) {
+ block_len = ram_size;
+ } else {
+ /*
+ * Xen does not allocate the memory continuously, it keeps a
+ * hole of the size computed above or passed in.
+ */
+ block_len = (1ULL << 32) + pcms->above_4g_mem_size;
+ }
+ memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len,
+ &error_fatal);
+ *ram_memory_p = &ram_memory;
+ vmstate_register_ram_global(&ram_memory);
+
+ memory_region_init_alias(&ram_640k, NULL, "xen.ram.640k",
+ &ram_memory, 0, 0xa0000);
+ memory_region_add_subregion(sysmem, 0, &ram_640k);
+ /* Skip of the VGA IO memory space, it will be registered later by the VGA
+ * emulated device.
+ *
+ * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load
+ * the Options ROM, so it is registered here as RAM.
+ */
+ memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo",
+ &ram_memory, 0xc0000,
+ pcms->below_4g_mem_size - 0xc0000);
+ memory_region_add_subregion(sysmem, 0xc0000, &ram_lo);
+ if (pcms->above_4g_mem_size > 0) {
+ memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi",
+ &ram_memory, 0x100000000ULL,
+ pcms->above_4g_mem_size);
+ memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi);
+ }
+}
+
+void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
+ Error **errp)
+{
+ unsigned long nr_pfn;
+ xen_pfn_t *pfn_list;
+ int i;
+
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ /* RAM already populated in Xen */
+ fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
+ " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
+ __func__, size, ram_addr);
+ return;
+ }
+
+ if (mr == &ram_memory) {
+ return;
+ }
+
+ trace_xen_ram_alloc(ram_addr, size);
+
+ nr_pfn = size >> TARGET_PAGE_BITS;
+ pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
+
+ for (i = 0; i < nr_pfn; i++) {
+ pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
+ }
+
+ if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0,
pfn_list)) {
+ error_setg(errp, "xen: failed to populate ram at " RAM_ADDR_FMT,
+ ram_addr);
+ }
+
+ g_free(pfn_list);
+}
+
+static XenPhysmap *get_physmapping(XenIOState *state,
+ hwaddr start_addr, ram_addr_t size)
+{
+ XenPhysmap *physmap = NULL;
+
+ start_addr &= TARGET_PAGE_MASK;
+
+ QLIST_FOREACH(physmap, &state->physmap, list) {
+ if (range_covers_byte(physmap->start_addr, physmap->size, start_addr))
{
+ return physmap;
+ }
+ }
+ return NULL;
+}
+
+static hwaddr xen_phys_offset_to_gaddr(hwaddr start_addr,
+ ram_addr_t size, void
*opaque)
+{
+ hwaddr addr = start_addr & TARGET_PAGE_MASK;
+ XenIOState *xen_io_state = opaque;
+ XenPhysmap *physmap = NULL;
+
+ QLIST_FOREACH(physmap, &xen_io_state->physmap, list) {
+ if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) {
+ return physmap->start_addr;
+ }
+ }
+
+ return start_addr;
+}
+
+static int xen_add_to_physmap(XenIOState *state,
+ hwaddr start_addr,
+ ram_addr_t size,
+ MemoryRegion *mr,
+ hwaddr offset_within_region)
+{
+ unsigned long i = 0;
+ int rc = 0;
+ XenPhysmap *physmap = NULL;
+ hwaddr pfn, start_gpfn;
+ hwaddr phys_offset = memory_region_get_ram_addr(mr);
+ char path[80], value[17];
+ const char *mr_name;
+
+ if (get_physmapping(state, start_addr, size)) {
+ return 0;
+ }
+ if (size <= 0) {
+ return -1;
+ }
+
+ /* Xen can only handle a single dirty log region for now and we want
+ * the linear framebuffer to be that region.
+ * Avoid tracking any regions that is not videoram and avoid tracking
+ * the legacy vga region. */
+ if (mr == framebuffer && start_addr > 0xbffff) {
+ goto go_physmap;
+ }
+ return -1;
+
+go_physmap:
+ DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n",
+ start_addr, start_addr + size);
+
+ pfn = phys_offset >> TARGET_PAGE_BITS;
+ start_gpfn = start_addr >> TARGET_PAGE_BITS;
+ for (i = 0; i < size >> TARGET_PAGE_BITS; i++) {
+ unsigned long idx = pfn + i;
+ xen_pfn_t gpfn = start_gpfn + i;
+
+ rc = xen_xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn,
idx, gpfn);
+ if (rc) {
+ DPRINTF("add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
+ PRI_xen_pfn" failed: %d (errno: %d)\n", idx, gpfn, rc,
errno);
+ return -rc;
+ }
+ }
+
+ mr_name = memory_region_name(mr);
+
+ physmap = g_malloc(sizeof (XenPhysmap));
+
+ physmap->start_addr = start_addr;
+ physmap->size = size;
+ physmap->name = mr_name;
+ physmap->phys_offset = phys_offset;
+
+ QLIST_INSERT_HEAD(&state->physmap, physmap, list);
+
+ xc_domain_pin_memory_cacheattr(xen_xc, xen_domid,
+ start_addr >> TARGET_PAGE_BITS,
+ (start_addr + size - 1) >> TARGET_PAGE_BITS,
+ XEN_DOMCTL_MEM_CACHEATTR_WB);
+
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr",
+ xen_domid, (uint64_t)phys_offset);
+ snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)start_addr);
+ if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
+ return -1;
+ }
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size",
+ xen_domid, (uint64_t)phys_offset);
+ snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)size);
+ if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
+ return -1;
+ }
+ if (mr_name) {
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name",
+ xen_domid, (uint64_t)phys_offset);
+ if (!xs_write(state->xenstore, 0, path, mr_name, strlen(mr_name))) {
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+static int xen_remove_from_physmap(XenIOState *state,
+ hwaddr start_addr,
+ ram_addr_t size)
+{
+ unsigned long i = 0;
+ int rc = 0;
+ XenPhysmap *physmap = NULL;
+ hwaddr phys_offset = 0;
+
+ physmap = get_physmapping(state, start_addr, size);
+ if (physmap == NULL) {
+ return -1;
+ }
+
+ phys_offset = physmap->phys_offset;
+ size = physmap->size;
+
+ DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", at "
+ "%"HWADDR_PRIx"\n", start_addr, start_addr + size, phys_offset);
+
+ size >>= TARGET_PAGE_BITS;
+ start_addr >>= TARGET_PAGE_BITS;
+ phys_offset >>= TARGET_PAGE_BITS;
+ for (i = 0; i < size; i++) {
+ xen_pfn_t idx = start_addr + i;
+ xen_pfn_t gpfn = phys_offset + i;
+
+ rc = xen_xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn,
idx, gpfn);
+ if (rc) {
+ fprintf(stderr, "add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
+ PRI_xen_pfn" failed: %d (errno: %d)\n", idx, gpfn, rc,
errno);
+ return -rc;
+ }
+ }
+
+ QLIST_REMOVE(physmap, list);
+ if (state->log_for_dirtybit == physmap) {
+ state->log_for_dirtybit = NULL;
+ }
+ g_free(physmap);
+
+ return 0;
+}
+
+static void xen_set_memory(struct MemoryListener *listener,
+ MemoryRegionSection *section,
+ bool add)
+{
+ XenIOState *state = container_of(listener, XenIOState, memory_listener);
+ hwaddr start_addr = section->offset_within_address_space;
+ ram_addr_t size = int128_get64(section->size);
+ bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA);
+ 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 (log_dirty != add) {
+ return;
+ }
+
+ trace_xen_client_set_memory(start_addr, size, log_dirty);
+
+ start_addr &= TARGET_PAGE_MASK;
+ size = TARGET_PAGE_ALIGN(size);
+
+ if (add) {
+ if (!memory_region_is_rom(section->mr)) {
+ xen_add_to_physmap(state, start_addr, size,
+ section->mr, section->offset_within_region);
+ } else {
+ mem_type = HVMMEM_ram_ro;
+ if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type,
+ start_addr >> TARGET_PAGE_BITS,
+ size >> TARGET_PAGE_BITS)) {
+ DPRINTF("xc_hvm_set_mem_type error, addr: "TARGET_FMT_plx"\n",
+ start_addr);
+ }
+ }
+ } else {
+ if (xen_remove_from_physmap(state, start_addr, size) < 0) {
+ DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n",
start_addr);
+ }
+ }
+}
+
+static void xen_region_add(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ memory_region_ref(section->mr);
+ xen_set_memory(listener, section, true);
+}
+
+static void xen_region_del(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ xen_set_memory(listener, section, false);
+ memory_region_unref(section->mr);
+}
+
+static void xen_io_add(MemoryListener *listener,
+ MemoryRegionSection *section)
+{
+ XenIOState *state = container_of(listener, XenIOState, io_listener);
+ MemoryRegion *mr = section->mr;
+
+ if (mr->ops == &unassigned_io_ops) {
+ return;
+ }
+
+ memory_region_ref(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);
+ MemoryRegion *mr = section->mr;
+
+ if (mr->ops == &unassigned_io_ops) {
+ return;
+ }
+
+ xen_unmap_io_section(xen_xc, xen_domid, state->ioservid, section);
+
+ memory_region_unref(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)
+{
+ hwaddr npages = size >> TARGET_PAGE_BITS;
+ const int width = sizeof(unsigned long) * 8;
+ unsigned long bitmap[DIV_ROUND_UP(npages, width)];
+ int rc, i, j;
+ const XenPhysmap *physmap = NULL;
+
+ physmap = get_physmapping(state, start_addr, size);
+ if (physmap == NULL) {
+ /* not handled */
+ return;
+ }
+
+ if (state->log_for_dirtybit == NULL) {
+ state->log_for_dirtybit = physmap;
+ } else if (state->log_for_dirtybit != physmap) {
+ /* Only one range for dirty bitmap can be tracked. */
+ return;
+ }
+
+ rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid,
+ start_addr >> TARGET_PAGE_BITS, npages,
+ bitmap);
+ if (rc < 0) {
+#ifndef ENODATA
+#define ENODATA ENOENT
+#endif
+ if (errno == ENODATA) {
+ memory_region_set_dirty(framebuffer, 0, size);
+ DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
+ ", 0x" TARGET_FMT_plx "): %s\n",
+ start_addr, start_addr + size, strerror(errno));
+ }
+ return;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(bitmap); i++) {
+ unsigned long map = bitmap[i];
+ while (map != 0) {
+ j = ctzl(map);
+ map &= ~(1ul << j);
+ memory_region_set_dirty(framebuffer,
+ (i * width + j) * TARGET_PAGE_SIZE,
+ TARGET_PAGE_SIZE);
+ };
+ }
+}
+
+static void xen_log_start(MemoryListener *listener,
+ MemoryRegionSection *section,
+ int old, int new)
+{
+ XenIOState *state = container_of(listener, XenIOState, memory_listener);
+
+ if (new & ~old & (1 << DIRTY_MEMORY_VGA)) {
+ xen_sync_dirty_bitmap(state, section->offset_within_address_space,
+ int128_get64(section->size));
+ }
+}
+
+static void xen_log_stop(MemoryListener *listener, MemoryRegionSection
*section,
+ int old, int new)
+{
+ XenIOState *state = container_of(listener, XenIOState, memory_listener);
+
+ if (old & ~new & (1 << DIRTY_MEMORY_VGA)) {
+ state->log_for_dirtybit = NULL;
+ /* Disable dirty bit tracking */
+ xc_hvm_track_dirty_vram(xen_xc, xen_domid, 0, 0, NULL);
+ }
+}
+
+static void xen_log_sync(MemoryListener *listener, MemoryRegionSection
*section)
+{
+ XenIOState *state = container_of(listener, XenIOState, memory_listener);
+
+ xen_sync_dirty_bitmap(state, section->offset_within_address_space,
+ int128_get64(section->size));
+}
+
+static void xen_log_global_start(MemoryListener *listener)
+{
+ if (xen_enabled()) {
+ xen_in_migration = true;
+ }
+}
+
+static void xen_log_global_stop(MemoryListener *listener)
+{
+ xen_in_migration = false;
+}
+
+static MemoryListener xen_memory_listener = {
+ .region_add = xen_region_add,
+ .region_del = xen_region_del,
+ .log_start = xen_log_start,
+ .log_stop = xen_log_stop,
+ .log_sync = xen_log_sync,
+ .log_global_start = xen_log_global_start,
+ .log_global_stop = xen_log_global_stop,
+ .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)
+{
+ ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu);
+
+ if (req->state != STATE_IOREQ_READY) {
+ DPRINTF("I/O request not ready: "
+ "%x, ptr: %x, port: %"PRIx64", "
+ "data: %"PRIx64", count: %u, size: %u\n",
+ req->state, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size);
+ return NULL;
+ }
+
+ xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
+
+ req->state = STATE_IOREQ_INPROCESS;
+ return req;
+}
+
+/* use poll to get the port notification */
+/* ioreq_vec--out,the */
+/* retval--the number of ioreq packet */
+static ioreq_t *cpu_get_ioreq(XenIOState *state)
+{
+ int i;
+ evtchn_port_t port;
+
+ port = xenevtchn_pending(state->xce_handle);
+ if (port == state->bufioreq_local_port) {
+ timer_mod(state->buffered_io_timer,
+ BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
+ return NULL;
+ }
+
+ if (port != -1) {
+ for (i = 0; i < max_cpus; i++) {
+ if (state->ioreq_local_port[i] == port) {
+ break;
+ }
+ }
+
+ if (i == max_cpus) {
+ hw_error("Fatal error while trying to get io event!\n");
+ }
+
+ /* unmask the wanted port again */
+ xenevtchn_unmask(state->xce_handle, port);
+
+ /* get the io packet from shared memory */
+ state->send_vcpu = i;
+ return cpu_get_ioreq_from_shared_memory(state, i);
+ }
+
+ /* read error or read nothing */
+ return NULL;
+}
+
+static uint32_t do_inp(uint32_t addr, unsigned long size)
+{
+ switch (size) {
+ case 1:
+ return cpu_inb(addr);
+ case 2:
+ return cpu_inw(addr);
+ case 4:
+ return cpu_inl(addr);
+ default:
+ hw_error("inp: bad size: %04x %lx", addr, size);
+ }
+}
+
+static void do_outp(uint32_t addr,
+ unsigned long size, uint32_t val)
+{
+ switch (size) {
+ case 1:
+ return cpu_outb(addr, val);
+ case 2:
+ return cpu_outw(addr, val);
+ case 4:
+ return cpu_outl(addr, val);
+ default:
+ hw_error("outp: bad size: %04x %lx", addr, size);
+ }
+}
+
+/*
+ * Helper functions which read/write an object from/to physical guest
+ * memory, as part of the implementation of an ioreq.
+ *
+ * Equivalent to
+ * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
+ * val, req->size, 0/1)
+ * except without the integer overflow problems.
+ */
+static void rw_phys_req_item(hwaddr addr,
+ ioreq_t *req, uint32_t i, void *val, int rw)
+{
+ /* Do everything unsigned so overflow just results in a truncated result
+ * and accesses to undesired parts of guest memory, which is up
+ * to the guest */
+ hwaddr offset = (hwaddr)req->size * i;
+ if (req->df) {
+ addr -= offset;
+ } else {
+ addr += offset;
+ }
+ cpu_physical_memory_rw(addr, val, req->size, rw);
+}
+
+static inline void read_phys_req_item(hwaddr addr,
+ ioreq_t *req, uint32_t i, void *val)
+{
+ rw_phys_req_item(addr, req, i, val, 0);
+}
+static inline void write_phys_req_item(hwaddr addr,
+ ioreq_t *req, uint32_t i, void *val)
+{
+ rw_phys_req_item(addr, req, i, val, 1);
+}
+
+
+static void cpu_ioreq_pio(ioreq_t *req)
+{
+ uint32_t i;
+
+ trace_cpu_ioreq_pio(req, req->dir, req->df, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size);
+
+ if (req->size > sizeof(uint32_t)) {
+ hw_error("PIO: bad size (%u)", req->size);
+ }
+
+ if (req->dir == IOREQ_READ) {
+ if (!req->data_is_ptr) {
+ req->data = do_inp(req->addr, req->size);
+ trace_cpu_ioreq_pio_read_reg(req, req->data, req->addr,
+ req->size);
+ } else {
+ uint32_t tmp;
+
+ for (i = 0; i < req->count; i++) {
+ tmp = do_inp(req->addr, req->size);
+ write_phys_req_item(req->data, req, i, &tmp);
+ }
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ if (!req->data_is_ptr) {
+ trace_cpu_ioreq_pio_write_reg(req, req->data, req->addr,
+ req->size);
+ do_outp(req->addr, req->size, req->data);
+ } else {
+ for (i = 0; i < req->count; i++) {
+ uint32_t tmp = 0;
+
+ read_phys_req_item(req->data, req, i, &tmp);
+ do_outp(req->addr, req->size, tmp);
+ }
+ }
+ }
+}
+
+static void cpu_ioreq_move(ioreq_t *req)
+{
+ uint32_t i;
+
+ trace_cpu_ioreq_move(req, req->dir, req->df, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size);
+
+ if (req->size > sizeof(req->data)) {
+ hw_error("MMIO: bad size (%u)", req->size);
+ }
+
+ if (!req->data_is_ptr) {
+ if (req->dir == IOREQ_READ) {
+ for (i = 0; i < req->count; i++) {
+ read_phys_req_item(req->addr, req, i, &req->data);
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ for (i = 0; i < req->count; i++) {
+ write_phys_req_item(req->addr, req, i, &req->data);
+ }
+ }
+ } else {
+ uint64_t tmp;
+
+ if (req->dir == IOREQ_READ) {
+ for (i = 0; i < req->count; i++) {
+ read_phys_req_item(req->addr, req, i, &tmp);
+ write_phys_req_item(req->data, req, i, &tmp);
+ }
+ } else if (req->dir == IOREQ_WRITE) {
+ for (i = 0; i < req->count; i++) {
+ read_phys_req_item(req->data, req, i, &tmp);
+ write_phys_req_item(req->addr, req, i, &tmp);
+ }
+ }
+ }
+}
+
+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)
+{
+ trace_handle_ioreq(req, req->type, req->dir, req->df, req->data_is_ptr,
+ req->addr, req->data, req->count, req->size);
+
+ if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
+ (req->size < sizeof (target_ulong))) {
+ req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
+ }
+
+ if (req->dir == IOREQ_WRITE)
+ trace_handle_ioreq_write(req, req->type, req->df, req->data_is_ptr,
+ req->addr, req->data, req->count, req->size);
+
+ switch (req->type) {
+ case IOREQ_TYPE_PIO:
+ cpu_ioreq_pio(req);
+ break;
+ 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:
+ 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);
+ }
+ if (req->dir == IOREQ_READ) {
+ trace_handle_ioreq_read(req, req->type, req->df, req->data_is_ptr,
+ req->addr, req->data, req->count, req->size);
+ }
+}
+
+static int handle_buffered_iopage(XenIOState *state)
+{
+ buffered_iopage_t *buf_page = state->buffered_io_page;
+ buf_ioreq_t *buf_req = NULL;
+ ioreq_t req;
+ int qw;
+
+ if (!buf_page) {
+ return 0;
+ }
+
+ memset(&req, 0x00, sizeof(req));
+ req.state = STATE_IOREQ_READY;
+ req.count = 1;
+ req.dir = IOREQ_WRITE;
+
+ for (;;) {
+ uint32_t rdptr = buf_page->read_pointer, wrptr;
+
+ xen_rmb();
+ wrptr = buf_page->write_pointer;
+ xen_rmb();
+ if (rdptr != buf_page->read_pointer) {
+ continue;
+ }
+ if (rdptr == wrptr) {
+ break;
+ }
+ buf_req = &buf_page->buf_ioreq[rdptr % IOREQ_BUFFER_SLOT_NUM];
+ req.size = 1U << buf_req->size;
+ req.addr = buf_req->addr;
+ req.data = buf_req->data;
+ req.type = buf_req->type;
+ xen_rmb();
+ qw = (req.size == 8);
+ if (qw) {
+ if (rdptr + 1 == wrptr) {
+ hw_error("Incomplete quad word buffered ioreq");
+ }
+ buf_req = &buf_page->buf_ioreq[(rdptr + 1) %
+ IOREQ_BUFFER_SLOT_NUM];
+ req.data |= ((uint64_t)buf_req->data) << 32;
+ xen_rmb();
+ }
+
+ handle_ioreq(state, &req);
+
+ /* Only req.data may get updated by handle_ioreq(), albeit even that
+ * should not happen as such data would never make it to the guest (we
+ * can only usefully see writes here after all).
+ */
+ assert(req.state == STATE_IOREQ_READY);
+ assert(req.count == 1);
+ assert(req.dir == IOREQ_WRITE);
+ assert(!req.data_is_ptr);
+
+ atomic_add(&buf_page->read_pointer, qw + 1);
+ }
+
+ return req.count;
+}
+
+static void handle_buffered_io(void *opaque)
+{
+ XenIOState *state = opaque;
+
+ if (handle_buffered_iopage(state)) {
+ timer_mod(state->buffered_io_timer,
+ BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
+ } else {
+ timer_del(state->buffered_io_timer);
+ xenevtchn_unmask(state->xce_handle, state->bufioreq_local_port);
+ }
+}
+
+static void cpu_handle_ioreq(void *opaque)
+{
+ XenIOState *state = opaque;
+ ioreq_t *req = cpu_get_ioreq(state);
+
+ handle_buffered_iopage(state);
+ if (req) {
+ ioreq_t copy = *req;
+
+ xen_rmb();
+ handle_ioreq(state, ©);
+ req->data = copy.data;
+
+ if (req->state != STATE_IOREQ_INPROCESS) {
+ fprintf(stderr, "Badness in I/O request ... not in service?!: "
+ "%x, ptr: %x, port: %"PRIx64", "
+ "data: %"PRIx64", count: %u, size: %u, type: %u\n",
+ req->state, req->data_is_ptr, req->addr,
+ req->data, req->count, req->size, req->type);
+ destroy_hvm_domain(false);
+ return;
+ }
+
+ xen_wmb(); /* Update ioreq contents /then/ update state. */
+
+ /*
+ * We do this before we send the response so that the tools
+ * have the opportunity to pick up on the reset before the
+ * guest resumes and does a hlt with interrupts disabled which
+ * causes Xen to powerdown the domain.
+ */
+ if (runstate_is_running()) {
+ if (qemu_shutdown_requested_get()) {
+ destroy_hvm_domain(false);
+ }
+ if (qemu_reset_requested_get()) {
+ qemu_system_reset(VMRESET_REPORT);
+ destroy_hvm_domain(true);
+ }
+ }
+
+ req->state = STATE_IORESP_READY;
+ xenevtchn_notify(state->xce_handle,
+ state->ioreq_local_port[state->send_vcpu]);
+ }
+}
+
+static void xen_main_loop_prepare(XenIOState *state)
+{
+ int evtchn_fd = -1;
+
+ if (state->xce_handle != NULL) {
+ evtchn_fd = xenevtchn_fd(state->xce_handle);
+ }
+
+ state->buffered_io_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
handle_buffered_io,
+ 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 *state = opaque;
+
+ if (running) {
+ 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)
+{
+ XenIOState *state = container_of(n, XenIOState, exit);
+
+ xenevtchn_close(state->xce_handle);
+ xs_daemon_close(state->xenstore);
+}
+
+static void xen_read_physmap(XenIOState *state)
+{
+ XenPhysmap *physmap = NULL;
+ unsigned int len, num, i;
+ char path[80], *value = NULL;
+ char **entries = NULL;
+
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap", xen_domid);
+ entries = xs_directory(state->xenstore, 0, path, &num);
+ if (entries == NULL)
+ return;
+
+ for (i = 0; i < num; i++) {
+ physmap = g_malloc(sizeof (XenPhysmap));
+ physmap->phys_offset = strtoull(entries[i], NULL, 16);
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%s/start_addr",
+ xen_domid, entries[i]);
+ value = xs_read(state->xenstore, 0, path, &len);
+ if (value == NULL) {
+ g_free(physmap);
+ continue;
+ }
+ physmap->start_addr = strtoull(value, NULL, 16);
+ free(value);
+
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%s/size",
+ xen_domid, entries[i]);
+ value = xs_read(state->xenstore, 0, path, &len);
+ if (value == NULL) {
+ g_free(physmap);
+ continue;
+ }
+ physmap->size = strtoull(value, NULL, 16);
+ free(value);
+
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%s/name",
+ xen_domid, entries[i]);
+ physmap->name = xs_read(state->xenstore, 0, path, &len);
+
+ QLIST_INSERT_HEAD(&state->physmap, physmap, list);
+ }
+ free(entries);
+}
+
+static void xen_wakeup_notifier(Notifier *notifier, void *data)
+{
+ xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
+}
+
+void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
+{
+ int i, rc;
+ xen_pfn_t ioreq_pfn;
+ xen_pfn_t bufioreq_pfn;
+ evtchn_port_t bufioreq_evtchn;
+ XenIOState *state;
+
+ state = g_malloc0(sizeof (XenIOState));
+
+ state->xce_handle = xenevtchn_open(NULL, 0);
+ if (state->xce_handle == NULL) {
+ perror("xen: event channel open");
+ goto err;
+ }
+
+ state->xenstore = xs_daemon_open();
+ if (state->xenstore == NULL) {
+ perror("xen: xenstore open");
+ goto err;
+ }
+
+ xen_create_ioreq_server(xen_xc, xen_domid, &state->ioservid);
+
+ state->exit.notify = xen_exit_notifier;
+ qemu_add_exit_notifier(&state->exit);
+
+ state->suspend.notify = xen_suspend_notifier;
+ qemu_register_suspend_notifier(&state->suspend);
+
+ state->wakeup.notify = xen_wakeup_notifier;
+ qemu_register_wakeup_notifier(&state->wakeup);
+
+ rc = xen_get_ioreq_server_info(xen_xc, xen_domid, state->ioservid,
+ &ioreq_pfn, &bufioreq_pfn,
+ &bufioreq_evtchn);
+ if (rc < 0) {
+ error_report("failed to get ioreq server info: error %d handle=%p",
+ errno, xen_xc);
+ goto err;
+ }
+
+ 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 = xenforeignmemory_map(xen_fmem, xen_domid,
+ PROT_READ|PROT_WRITE,
+ 1, &ioreq_pfn, NULL);
+ if (state->shared_page == NULL) {
+ error_report("map shared IO page returned error %d handle=%p",
+ errno, xen_xc);
+ goto err;
+ }
+
+ 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 =
+ xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
+ 1, &ioreq_pfn, NULL);
+ if (state->shared_vmport_page == NULL) {
+ error_report("map shared vmport IO page returned error %d
handle=%p",
+ errno, xen_xc);
+ goto err;
+ }
+ } else if (rc != -ENOSYS) {
+ error_report("get vmport regs pfn returned error %d, rc=%d",
+ errno, rc);
+ goto err;
+ }
+
+ state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid,
+ PROT_READ|PROT_WRITE,
+ 1, &bufioreq_pfn, NULL);
+ if (state->buffered_io_page == NULL) {
+ error_report("map buffered IO page returned error %d", errno);
+ goto err;
+ }
+
+ /* 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) {
+ error_report("failed to enable ioreq server info: error %d handle=%p",
+ errno, xen_xc);
+ goto err;
+ }
+
+ state->ioreq_local_port = g_malloc0(max_cpus * sizeof (evtchn_port_t));
+
+ /* FIXME: how about if we overflow the page here? */
+ for (i = 0; i < max_cpus; i++) {
+ rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
+ xen_vcpu_eport(state->shared_page, i));
+ if (rc == -1) {
+ error_report("shared evtchn %d bind error %d", i, errno);
+ goto err;
+ }
+ state->ioreq_local_port[i] = rc;
+ }
+
+ rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
+ bufioreq_evtchn);
+ if (rc == -1) {
+ error_report("buffered evtchn bind error %d", errno);
+ goto err;
+ }
+ state->bufioreq_local_port = rc;
+
+ /* Init RAM management */
+ xen_map_cache_init(xen_phys_offset_to_gaddr, state);
+ xen_ram_init(pcms, ram_size, ram_memory);
+
+ qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
+
+ state->memory_listener = xen_memory_listener;
+ QLIST_INIT(&state->physmap);
+ 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) {
+ error_report("xen backend core setup failed");
+ goto err;
+ }
+ xen_be_register_common();
+ xen_read_physmap(state);
+
+ /* Disable ACPI build because Xen handles it */
+ pcms->acpi_build_enabled = false;
+
+ return;
+
+err:
+ error_report("xen hardware virtual machine initialisation failed");
+ exit(1);
+}
+
+void destroy_hvm_domain(bool reboot)
+{
+ xc_interface *xc_handle;
+ int sts;
+
+ xc_handle = xc_interface_open(0, 0, 0);
+ if (xc_handle == NULL) {
+ fprintf(stderr, "Cannot acquire xenctrl handle\n");
+ } else {
+ sts = xc_domain_shutdown(xc_handle, xen_domid,
+ reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff);
+ if (sts != 0) {
+ fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
+ "sts %d, %s\n", reboot ? "reboot" : "poweroff",
+ sts, strerror(errno));
+ } else {
+ fprintf(stderr, "Issued domain %d %s\n", xen_domid,
+ reboot ? "reboot" : "poweroff");
+ }
+ xc_interface_close(xc_handle);
+ }
+}
+
+void xen_register_framebuffer(MemoryRegion *mr)
+{
+ framebuffer = mr;
+}
+
+void xen_shutdown_fatal_error(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
+ fprintf(stderr, "Will destroy the domain.\n");
+ /* destroy the domain */
+ qemu_system_shutdown_request();
+}
+
+void xen_modified_memory(ram_addr_t start, ram_addr_t length)
+{
+ if (unlikely(xen_in_migration)) {
+ int rc;
+ ram_addr_t start_pfn, nb_pages;
+
+ if (length == 0) {
+ length = TARGET_PAGE_SIZE;
+ }
+ start_pfn = start >> TARGET_PAGE_BITS;
+ nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >>
TARGET_PAGE_BITS)
+ - start_pfn;
+ rc = xc_hvm_modified_memory(xen_xc, xen_domid, start_pfn, nb_pages);
+ if (rc) {
+ fprintf(stderr,
+ "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n",
+ __func__, start, nb_pages, rc, strerror(-rc));
+ }
+ }
+}
+
+void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
+{
+ if (enable) {
+ memory_global_dirty_log_start();
+ } else {
+ memory_global_dirty_log_stop();
+ }
+}
diff --git a/hw/xen/Makefile.objs b/hw/xen/Makefile.objs
index 4be3ec9..64a70bc 100644
--- a/hw/xen/Makefile.objs
+++ b/hw/xen/Makefile.objs
@@ -1,5 +1,5 @@
# xen backend driver support
-common-obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o xen_pvdev.o
+common-obj-$(CONFIG_XEN) += xen_backend.o xen_devconfig.o xen_pvdev.o
xen-common.o
obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen-host-pci-device.o
obj-$(CONFIG_XEN_PCI_PASSTHROUGH) += xen_pt.o xen_pt_config_init.o
xen_pt_graphics.o xen_pt_msi.o
diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
index 224f04b..f5b47bf 100644
--- a/stubs/Makefile.objs
+++ b/stubs/Makefile.objs
@@ -37,3 +37,5 @@ stub-obj-y += target-monitor-defs.o
stub-obj-y += target-get-monitor-def.o
stub-obj-y += pc_madt_cpu_entry.o
stub-obj-y += vmgenid.o
+stub-obj-y += xen-common.o
+stub-obj-y += xen-hvm.o
diff --git a/stubs/xen-hvm.c b/stubs/xen-hvm.c
new file mode 100644
index 0000000..c500325
--- /dev/null
+++ b/stubs/xen-hvm.c
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2010 Citrix Ltd.
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ * Contributions after 2012-01-13 are licensed under the terms of the
+ * GNU GPL, version 2 or (at your option) any later version.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "hw/xen/xen.h"
+#include "exec/memory.h"
+#include "qmp-commands.h"
+
+int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
+{
+ return -1;
+}
+
+void xen_piix3_set_irq(void *opaque, int irq_num, int level)
+{
+}
+
+void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
+{
+}
+
+void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
+{
+}
+
+int xen_is_pirq_msi(uint32_t msi_data)
+{
+ return 0;
+}
+
+void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
+ Error **errp)
+{
+}
+
+qemu_irq *xen_interrupt_controller_init(void)
+{
+ return NULL;
+}
+
+void xen_register_framebuffer(MemoryRegion *mr)
+{
+}
+
+void xen_modified_memory(ram_addr_t start, ram_addr_t length)
+{
+}
+
+void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
+{
+}
+
+void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
+{
+}
diff --git a/trace-events b/trace-events
index b07a09b..4e14487 100644
--- a/trace-events
+++ b/trace-events
@@ -48,17 +48,6 @@ spice_vmc_register_interface(void *scd) "spice vmc
registered interface %p"
spice_vmc_unregister_interface(void *scd) "spice vmc unregistered interface %p"
spice_vmc_event(int event) "spice vmc event %d"
-# 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"
-handle_ioreq(void *req, uint32_t type, uint32_t dir, uint32_t df, uint32_t
data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size)
"I/O=%p type=%d dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d
size=%d"
-handle_ioreq_read(void *req, uint32_t type, uint32_t df, uint32_t data_is_ptr,
uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p read
type=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
-handle_ioreq_write(void *req, uint32_t type, uint32_t df, uint32_t
data_is_ptr, uint64_t addr, uint64_t data, uint32_t count, uint32_t size)
"I/O=%p write type=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d
size=%d"
-cpu_ioreq_pio(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr,
uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p pio dir=%d
df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
-cpu_ioreq_pio_read_reg(void *req, uint64_t data, uint64_t addr, uint32_t size)
"I/O=%p pio read reg data=%#"PRIx64" port=%#"PRIx64" size=%d"
-cpu_ioreq_pio_write_reg(void *req, uint64_t data, uint64_t addr, uint32_t
size) "I/O=%p pio write reg data=%#"PRIx64" port=%#"PRIx64" size=%d"
-cpu_ioreq_move(void *req, uint32_t dir, uint32_t df, uint32_t data_is_ptr,
uint64_t addr, uint64_t data, uint32_t count, uint32_t size) "I/O=%p copy
dir=%d df=%d ptr=%d port=%#"PRIx64" data=%#"PRIx64" count=%d size=%d"
-
# xen-mapcache.c
xen_map_cache(uint64_t phys_addr) "want %#"PRIx64
xen_remap_bucket(uint64_t index) "index %#"PRIx64
diff --git a/xen-hvm-stub.c b/xen-hvm-stub.c
deleted file mode 100644
index c500325..0000000
--- a/xen-hvm-stub.c
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (C) 2010 Citrix Ltd.
- *
- * This work is licensed under the terms of the GNU GPL, version 2. See
- * the COPYING file in the top-level directory.
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
- */
-
-#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "hw/xen/xen.h"
-#include "exec/memory.h"
-#include "qmp-commands.h"
-
-int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
-{
- return -1;
-}
-
-void xen_piix3_set_irq(void *opaque, int irq_num, int level)
-{
-}
-
-void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
-{
-}
-
-void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
-{
-}
-
-int xen_is_pirq_msi(uint32_t msi_data)
-{
- return 0;
-}
-
-void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
- Error **errp)
-{
-}
-
-qemu_irq *xen_interrupt_controller_init(void)
-{
- return NULL;
-}
-
-void xen_register_framebuffer(MemoryRegion *mr)
-{
-}
-
-void xen_modified_memory(ram_addr_t start, ram_addr_t length)
-{
-}
-
-void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
-{
-}
-
-void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
-{
-}
diff --git a/xen-hvm.c b/xen-hvm.c
deleted file mode 100644
index 5043beb..0000000
--- a/xen-hvm.c
+++ /dev/null
@@ -1,1422 +0,0 @@
-/*
- * Copyright (C) 2010 Citrix Ltd.
- *
- * This work is licensed under the terms of the GNU GPL, version 2. See
- * the COPYING file in the top-level directory.
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
- */
-
-#include "qemu/osdep.h"
-
-#include "cpu.h"
-#include "hw/pci/pci.h"
-#include "hw/i386/pc.h"
-#include "hw/i386/apic-msidef.h"
-#include "hw/xen/xen_common.h"
-#include "hw/xen/xen_backend.h"
-#include "qmp-commands.h"
-
-#include "sysemu/char.h"
-#include "qemu/error-report.h"
-#include "qemu/range.h"
-#include "sysemu/xen-mapcache.h"
-#include "trace-root.h"
-#include "exec/address-spaces.h"
-
-#include <xen/hvm/ioreq.h>
-#include <xen/hvm/params.h>
-#include <xen/hvm/e820.h>
-
-//#define DEBUG_XEN_HVM
-
-#ifdef DEBUG_XEN_HVM
-#define DPRINTF(fmt, ...) \
- do { fprintf(stderr, "xen: " fmt, ## __VA_ARGS__); } while (0)
-#else
-#define DPRINTF(fmt, ...) \
- do { } while (0)
-#endif
-
-static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi;
-static MemoryRegion *framebuffer;
-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
-
-static inline uint32_t xen_vcpu_eport(shared_iopage_t *shared_page, int i)
-{
- return shared_page->vcpu_ioreq[i].vp_eport;
-}
-static inline ioreq_t *xen_vcpu_ioreq(shared_iopage_t *shared_page, int vcpu)
-{
- return &shared_page->vcpu_ioreq[vcpu];
-}
-
-#define BUFFER_IO_MAX_DELAY 100
-
-typedef struct XenPhysmap {
- hwaddr start_addr;
- ram_addr_t size;
- const char *name;
- hwaddr phys_offset;
-
- QLIST_ENTRY(XenPhysmap) list;
-} 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;
- 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 */
- evtchn_port_t bufioreq_local_port;
- /* the evtchn fd for polling */
- xenevtchn_handle *xce_handle;
- /* which vcpu we are serving */
- int send_vcpu;
-
- 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;
-
- Notifier exit;
- Notifier suspend;
- Notifier wakeup;
-} XenIOState;
-
-/* Xen specific function for piix pci */
-
-int xen_pci_slot_get_pirq(PCIDevice *pci_dev, int irq_num)
-{
- return irq_num + ((pci_dev->devfn >> 3) << 2);
-}
-
-void xen_piix3_set_irq(void *opaque, int irq_num, int level)
-{
- xc_hvm_set_pci_intx_level(xen_xc, xen_domid, 0, 0, irq_num >> 2,
- irq_num & 3, level);
-}
-
-void xen_piix_pci_write_config_client(uint32_t address, uint32_t val, int len)
-{
- int i;
-
- /* Scan for updates to PCI link routes (0x60-0x63). */
- for (i = 0; i < len; i++) {
- uint8_t v = (val >> (8 * i)) & 0xff;
- if (v & 0x80) {
- v = 0;
- }
- v &= 0xf;
- if (((address + i) >= 0x60) && ((address + i) <= 0x63)) {
- xc_hvm_set_pci_link_route(xen_xc, xen_domid, address + i - 0x60,
v);
- }
- }
-}
-
-int xen_is_pirq_msi(uint32_t msi_data)
-{
- /* If vector is 0, the msi is remapped into a pirq, passed as
- * dest_id.
- */
- return ((msi_data & MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT) == 0;
-}
-
-void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
-{
- xc_hvm_inject_msi(xen_xc, xen_domid, addr, data);
-}
-
-static void xen_suspend_notifier(Notifier *notifier, void *data)
-{
- xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
-}
-
-/* Xen Interrupt Controller */
-
-static void xen_set_irq(void *opaque, int irq, int level)
-{
- xc_hvm_set_isa_irq_level(xen_xc, xen_domid, irq, level);
-}
-
-qemu_irq *xen_interrupt_controller_init(void)
-{
- return qemu_allocate_irqs(xen_set_irq, NULL, 16);
-}
-
-/* Memory Ops */
-
-static void xen_ram_init(PCMachineState *pcms,
- ram_addr_t ram_size, MemoryRegion **ram_memory_p)
-{
- MemoryRegion *sysmem = get_system_memory();
- ram_addr_t block_len;
- uint64_t user_lowmem = object_property_get_int(qdev_get_machine(),
- PC_MACHINE_MAX_RAM_BELOW_4G,
- &error_abort);
-
- /* Handle the machine opt max-ram-below-4g. It is basically doing
- * min(xen limit, user limit).
- */
- if (!user_lowmem) {
- user_lowmem = HVM_BELOW_4G_RAM_END; /* default */
- }
- if (HVM_BELOW_4G_RAM_END <= user_lowmem) {
- user_lowmem = HVM_BELOW_4G_RAM_END;
- }
-
- if (ram_size >= user_lowmem) {
- pcms->above_4g_mem_size = ram_size - user_lowmem;
- pcms->below_4g_mem_size = user_lowmem;
- } else {
- pcms->above_4g_mem_size = 0;
- pcms->below_4g_mem_size = ram_size;
- }
- if (!pcms->above_4g_mem_size) {
- block_len = ram_size;
- } else {
- /*
- * Xen does not allocate the memory continuously, it keeps a
- * hole of the size computed above or passed in.
- */
- block_len = (1ULL << 32) + pcms->above_4g_mem_size;
- }
- memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len,
- &error_fatal);
- *ram_memory_p = &ram_memory;
- vmstate_register_ram_global(&ram_memory);
-
- memory_region_init_alias(&ram_640k, NULL, "xen.ram.640k",
- &ram_memory, 0, 0xa0000);
- memory_region_add_subregion(sysmem, 0, &ram_640k);
- /* Skip of the VGA IO memory space, it will be registered later by the VGA
- * emulated device.
- *
- * The area between 0xc0000 and 0x100000 will be used by SeaBIOS to load
- * the Options ROM, so it is registered here as RAM.
- */
- memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo",
- &ram_memory, 0xc0000,
- pcms->below_4g_mem_size - 0xc0000);
- memory_region_add_subregion(sysmem, 0xc0000, &ram_lo);
- if (pcms->above_4g_mem_size > 0) {
- memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi",
- &ram_memory, 0x100000000ULL,
- pcms->above_4g_mem_size);
- memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi);
- }
-}
-
-void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, MemoryRegion *mr,
- Error **errp)
-{
- unsigned long nr_pfn;
- xen_pfn_t *pfn_list;
- int i;
-
- if (runstate_check(RUN_STATE_INMIGRATE)) {
- /* RAM already populated in Xen */
- fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
- " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
- __func__, size, ram_addr);
- return;
- }
-
- if (mr == &ram_memory) {
- return;
- }
-
- trace_xen_ram_alloc(ram_addr, size);
-
- nr_pfn = size >> TARGET_PAGE_BITS;
- pfn_list = g_malloc(sizeof (*pfn_list) * nr_pfn);
-
- for (i = 0; i < nr_pfn; i++) {
- pfn_list[i] = (ram_addr >> TARGET_PAGE_BITS) + i;
- }
-
- if (xc_domain_populate_physmap_exact(xen_xc, xen_domid, nr_pfn, 0, 0,
pfn_list)) {
- error_setg(errp, "xen: failed to populate ram at " RAM_ADDR_FMT,
- ram_addr);
- }
-
- g_free(pfn_list);
-}
-
-static XenPhysmap *get_physmapping(XenIOState *state,
- hwaddr start_addr, ram_addr_t size)
-{
- XenPhysmap *physmap = NULL;
-
- start_addr &= TARGET_PAGE_MASK;
-
- QLIST_FOREACH(physmap, &state->physmap, list) {
- if (range_covers_byte(physmap->start_addr, physmap->size, start_addr))
{
- return physmap;
- }
- }
- return NULL;
-}
-
-static hwaddr xen_phys_offset_to_gaddr(hwaddr start_addr,
- ram_addr_t size, void
*opaque)
-{
- hwaddr addr = start_addr & TARGET_PAGE_MASK;
- XenIOState *xen_io_state = opaque;
- XenPhysmap *physmap = NULL;
-
- QLIST_FOREACH(physmap, &xen_io_state->physmap, list) {
- if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) {
- return physmap->start_addr;
- }
- }
-
- return start_addr;
-}
-
-static int xen_add_to_physmap(XenIOState *state,
- hwaddr start_addr,
- ram_addr_t size,
- MemoryRegion *mr,
- hwaddr offset_within_region)
-{
- unsigned long i = 0;
- int rc = 0;
- XenPhysmap *physmap = NULL;
- hwaddr pfn, start_gpfn;
- hwaddr phys_offset = memory_region_get_ram_addr(mr);
- char path[80], value[17];
- const char *mr_name;
-
- if (get_physmapping(state, start_addr, size)) {
- return 0;
- }
- if (size <= 0) {
- return -1;
- }
-
- /* Xen can only handle a single dirty log region for now and we want
- * the linear framebuffer to be that region.
- * Avoid tracking any regions that is not videoram and avoid tracking
- * the legacy vga region. */
- if (mr == framebuffer && start_addr > 0xbffff) {
- goto go_physmap;
- }
- return -1;
-
-go_physmap:
- DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n",
- start_addr, start_addr + size);
-
- pfn = phys_offset >> TARGET_PAGE_BITS;
- start_gpfn = start_addr >> TARGET_PAGE_BITS;
- for (i = 0; i < size >> TARGET_PAGE_BITS; i++) {
- unsigned long idx = pfn + i;
- xen_pfn_t gpfn = start_gpfn + i;
-
- rc = xen_xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn,
idx, gpfn);
- if (rc) {
- DPRINTF("add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
- PRI_xen_pfn" failed: %d (errno: %d)\n", idx, gpfn, rc,
errno);
- return -rc;
- }
- }
-
- mr_name = memory_region_name(mr);
-
- physmap = g_malloc(sizeof (XenPhysmap));
-
- physmap->start_addr = start_addr;
- physmap->size = size;
- physmap->name = mr_name;
- physmap->phys_offset = phys_offset;
-
- QLIST_INSERT_HEAD(&state->physmap, physmap, list);
-
- xc_domain_pin_memory_cacheattr(xen_xc, xen_domid,
- start_addr >> TARGET_PAGE_BITS,
- (start_addr + size - 1) >> TARGET_PAGE_BITS,
- XEN_DOMCTL_MEM_CACHEATTR_WB);
-
- snprintf(path, sizeof(path),
- "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr",
- xen_domid, (uint64_t)phys_offset);
- snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)start_addr);
- if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
- return -1;
- }
- snprintf(path, sizeof(path),
- "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size",
- xen_domid, (uint64_t)phys_offset);
- snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)size);
- if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
- return -1;
- }
- if (mr_name) {
- snprintf(path, sizeof(path),
- "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name",
- xen_domid, (uint64_t)phys_offset);
- if (!xs_write(state->xenstore, 0, path, mr_name, strlen(mr_name))) {
- return -1;
- }
- }
-
- return 0;
-}
-
-static int xen_remove_from_physmap(XenIOState *state,
- hwaddr start_addr,
- ram_addr_t size)
-{
- unsigned long i = 0;
- int rc = 0;
- XenPhysmap *physmap = NULL;
- hwaddr phys_offset = 0;
-
- physmap = get_physmapping(state, start_addr, size);
- if (physmap == NULL) {
- return -1;
- }
-
- phys_offset = physmap->phys_offset;
- size = physmap->size;
-
- DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", at "
- "%"HWADDR_PRIx"\n", start_addr, start_addr + size, phys_offset);
-
- size >>= TARGET_PAGE_BITS;
- start_addr >>= TARGET_PAGE_BITS;
- phys_offset >>= TARGET_PAGE_BITS;
- for (i = 0; i < size; i++) {
- xen_pfn_t idx = start_addr + i;
- xen_pfn_t gpfn = phys_offset + i;
-
- rc = xen_xc_domain_add_to_physmap(xen_xc, xen_domid, XENMAPSPACE_gmfn,
idx, gpfn);
- if (rc) {
- fprintf(stderr, "add_to_physmap MFN %"PRI_xen_pfn" to PFN %"
- PRI_xen_pfn" failed: %d (errno: %d)\n", idx, gpfn, rc,
errno);
- return -rc;
- }
- }
-
- QLIST_REMOVE(physmap, list);
- if (state->log_for_dirtybit == physmap) {
- state->log_for_dirtybit = NULL;
- }
- g_free(physmap);
-
- return 0;
-}
-
-static void xen_set_memory(struct MemoryListener *listener,
- MemoryRegionSection *section,
- bool add)
-{
- XenIOState *state = container_of(listener, XenIOState, memory_listener);
- hwaddr start_addr = section->offset_within_address_space;
- ram_addr_t size = int128_get64(section->size);
- bool log_dirty = memory_region_is_logging(section->mr, DIRTY_MEMORY_VGA);
- 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 (log_dirty != add) {
- return;
- }
-
- trace_xen_client_set_memory(start_addr, size, log_dirty);
-
- start_addr &= TARGET_PAGE_MASK;
- size = TARGET_PAGE_ALIGN(size);
-
- if (add) {
- if (!memory_region_is_rom(section->mr)) {
- xen_add_to_physmap(state, start_addr, size,
- section->mr, section->offset_within_region);
- } else {
- mem_type = HVMMEM_ram_ro;
- if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type,
- start_addr >> TARGET_PAGE_BITS,
- size >> TARGET_PAGE_BITS)) {
- DPRINTF("xc_hvm_set_mem_type error, addr: "TARGET_FMT_plx"\n",
- start_addr);
- }
- }
- } else {
- if (xen_remove_from_physmap(state, start_addr, size) < 0) {
- DPRINTF("physmapping does not exist at "TARGET_FMT_plx"\n",
start_addr);
- }
- }
-}
-
-static void xen_region_add(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- memory_region_ref(section->mr);
- xen_set_memory(listener, section, true);
-}
-
-static void xen_region_del(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- xen_set_memory(listener, section, false);
- memory_region_unref(section->mr);
-}
-
-static void xen_io_add(MemoryListener *listener,
- MemoryRegionSection *section)
-{
- XenIOState *state = container_of(listener, XenIOState, io_listener);
- MemoryRegion *mr = section->mr;
-
- if (mr->ops == &unassigned_io_ops) {
- return;
- }
-
- memory_region_ref(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);
- MemoryRegion *mr = section->mr;
-
- if (mr->ops == &unassigned_io_ops) {
- return;
- }
-
- xen_unmap_io_section(xen_xc, xen_domid, state->ioservid, section);
-
- memory_region_unref(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)
-{
- hwaddr npages = size >> TARGET_PAGE_BITS;
- const int width = sizeof(unsigned long) * 8;
- unsigned long bitmap[DIV_ROUND_UP(npages, width)];
- int rc, i, j;
- const XenPhysmap *physmap = NULL;
-
- physmap = get_physmapping(state, start_addr, size);
- if (physmap == NULL) {
- /* not handled */
- return;
- }
-
- if (state->log_for_dirtybit == NULL) {
- state->log_for_dirtybit = physmap;
- } else if (state->log_for_dirtybit != physmap) {
- /* Only one range for dirty bitmap can be tracked. */
- return;
- }
-
- rc = xc_hvm_track_dirty_vram(xen_xc, xen_domid,
- start_addr >> TARGET_PAGE_BITS, npages,
- bitmap);
- if (rc < 0) {
-#ifndef ENODATA
-#define ENODATA ENOENT
-#endif
- if (errno == ENODATA) {
- memory_region_set_dirty(framebuffer, 0, size);
- DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
- ", 0x" TARGET_FMT_plx "): %s\n",
- start_addr, start_addr + size, strerror(errno));
- }
- return;
- }
-
- for (i = 0; i < ARRAY_SIZE(bitmap); i++) {
- unsigned long map = bitmap[i];
- while (map != 0) {
- j = ctzl(map);
- map &= ~(1ul << j);
- memory_region_set_dirty(framebuffer,
- (i * width + j) * TARGET_PAGE_SIZE,
- TARGET_PAGE_SIZE);
- };
- }
-}
-
-static void xen_log_start(MemoryListener *listener,
- MemoryRegionSection *section,
- int old, int new)
-{
- XenIOState *state = container_of(listener, XenIOState, memory_listener);
-
- if (new & ~old & (1 << DIRTY_MEMORY_VGA)) {
- xen_sync_dirty_bitmap(state, section->offset_within_address_space,
- int128_get64(section->size));
- }
-}
-
-static void xen_log_stop(MemoryListener *listener, MemoryRegionSection
*section,
- int old, int new)
-{
- XenIOState *state = container_of(listener, XenIOState, memory_listener);
-
- if (old & ~new & (1 << DIRTY_MEMORY_VGA)) {
- state->log_for_dirtybit = NULL;
- /* Disable dirty bit tracking */
- xc_hvm_track_dirty_vram(xen_xc, xen_domid, 0, 0, NULL);
- }
-}
-
-static void xen_log_sync(MemoryListener *listener, MemoryRegionSection
*section)
-{
- XenIOState *state = container_of(listener, XenIOState, memory_listener);
-
- xen_sync_dirty_bitmap(state, section->offset_within_address_space,
- int128_get64(section->size));
-}
-
-static void xen_log_global_start(MemoryListener *listener)
-{
- if (xen_enabled()) {
- xen_in_migration = true;
- }
-}
-
-static void xen_log_global_stop(MemoryListener *listener)
-{
- xen_in_migration = false;
-}
-
-static MemoryListener xen_memory_listener = {
- .region_add = xen_region_add,
- .region_del = xen_region_del,
- .log_start = xen_log_start,
- .log_stop = xen_log_stop,
- .log_sync = xen_log_sync,
- .log_global_start = xen_log_global_start,
- .log_global_stop = xen_log_global_stop,
- .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)
-{
- ioreq_t *req = xen_vcpu_ioreq(state->shared_page, vcpu);
-
- if (req->state != STATE_IOREQ_READY) {
- DPRINTF("I/O request not ready: "
- "%x, ptr: %x, port: %"PRIx64", "
- "data: %"PRIx64", count: %u, size: %u\n",
- req->state, req->data_is_ptr, req->addr,
- req->data, req->count, req->size);
- return NULL;
- }
-
- xen_rmb(); /* see IOREQ_READY /then/ read contents of ioreq */
-
- req->state = STATE_IOREQ_INPROCESS;
- return req;
-}
-
-/* use poll to get the port notification */
-/* ioreq_vec--out,the */
-/* retval--the number of ioreq packet */
-static ioreq_t *cpu_get_ioreq(XenIOState *state)
-{
- int i;
- evtchn_port_t port;
-
- port = xenevtchn_pending(state->xce_handle);
- if (port == state->bufioreq_local_port) {
- timer_mod(state->buffered_io_timer,
- BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
- return NULL;
- }
-
- if (port != -1) {
- for (i = 0; i < max_cpus; i++) {
- if (state->ioreq_local_port[i] == port) {
- break;
- }
- }
-
- if (i == max_cpus) {
- hw_error("Fatal error while trying to get io event!\n");
- }
-
- /* unmask the wanted port again */
- xenevtchn_unmask(state->xce_handle, port);
-
- /* get the io packet from shared memory */
- state->send_vcpu = i;
- return cpu_get_ioreq_from_shared_memory(state, i);
- }
-
- /* read error or read nothing */
- return NULL;
-}
-
-static uint32_t do_inp(uint32_t addr, unsigned long size)
-{
- switch (size) {
- case 1:
- return cpu_inb(addr);
- case 2:
- return cpu_inw(addr);
- case 4:
- return cpu_inl(addr);
- default:
- hw_error("inp: bad size: %04x %lx", addr, size);
- }
-}
-
-static void do_outp(uint32_t addr,
- unsigned long size, uint32_t val)
-{
- switch (size) {
- case 1:
- return cpu_outb(addr, val);
- case 2:
- return cpu_outw(addr, val);
- case 4:
- return cpu_outl(addr, val);
- default:
- hw_error("outp: bad size: %04x %lx", addr, size);
- }
-}
-
-/*
- * Helper functions which read/write an object from/to physical guest
- * memory, as part of the implementation of an ioreq.
- *
- * Equivalent to
- * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
- * val, req->size, 0/1)
- * except without the integer overflow problems.
- */
-static void rw_phys_req_item(hwaddr addr,
- ioreq_t *req, uint32_t i, void *val, int rw)
-{
- /* Do everything unsigned so overflow just results in a truncated result
- * and accesses to undesired parts of guest memory, which is up
- * to the guest */
- hwaddr offset = (hwaddr)req->size * i;
- if (req->df) {
- addr -= offset;
- } else {
- addr += offset;
- }
- cpu_physical_memory_rw(addr, val, req->size, rw);
-}
-
-static inline void read_phys_req_item(hwaddr addr,
- ioreq_t *req, uint32_t i, void *val)
-{
- rw_phys_req_item(addr, req, i, val, 0);
-}
-static inline void write_phys_req_item(hwaddr addr,
- ioreq_t *req, uint32_t i, void *val)
-{
- rw_phys_req_item(addr, req, i, val, 1);
-}
-
-
-static void cpu_ioreq_pio(ioreq_t *req)
-{
- uint32_t i;
-
- trace_cpu_ioreq_pio(req, req->dir, req->df, req->data_is_ptr, req->addr,
- req->data, req->count, req->size);
-
- if (req->size > sizeof(uint32_t)) {
- hw_error("PIO: bad size (%u)", req->size);
- }
-
- if (req->dir == IOREQ_READ) {
- if (!req->data_is_ptr) {
- req->data = do_inp(req->addr, req->size);
- trace_cpu_ioreq_pio_read_reg(req, req->data, req->addr,
- req->size);
- } else {
- uint32_t tmp;
-
- for (i = 0; i < req->count; i++) {
- tmp = do_inp(req->addr, req->size);
- write_phys_req_item(req->data, req, i, &tmp);
- }
- }
- } else if (req->dir == IOREQ_WRITE) {
- if (!req->data_is_ptr) {
- trace_cpu_ioreq_pio_write_reg(req, req->data, req->addr,
- req->size);
- do_outp(req->addr, req->size, req->data);
- } else {
- for (i = 0; i < req->count; i++) {
- uint32_t tmp = 0;
-
- read_phys_req_item(req->data, req, i, &tmp);
- do_outp(req->addr, req->size, tmp);
- }
- }
- }
-}
-
-static void cpu_ioreq_move(ioreq_t *req)
-{
- uint32_t i;
-
- trace_cpu_ioreq_move(req, req->dir, req->df, req->data_is_ptr, req->addr,
- req->data, req->count, req->size);
-
- if (req->size > sizeof(req->data)) {
- hw_error("MMIO: bad size (%u)", req->size);
- }
-
- if (!req->data_is_ptr) {
- if (req->dir == IOREQ_READ) {
- for (i = 0; i < req->count; i++) {
- read_phys_req_item(req->addr, req, i, &req->data);
- }
- } else if (req->dir == IOREQ_WRITE) {
- for (i = 0; i < req->count; i++) {
- write_phys_req_item(req->addr, req, i, &req->data);
- }
- }
- } else {
- uint64_t tmp;
-
- if (req->dir == IOREQ_READ) {
- for (i = 0; i < req->count; i++) {
- read_phys_req_item(req->addr, req, i, &tmp);
- write_phys_req_item(req->data, req, i, &tmp);
- }
- } else if (req->dir == IOREQ_WRITE) {
- for (i = 0; i < req->count; i++) {
- read_phys_req_item(req->data, req, i, &tmp);
- write_phys_req_item(req->addr, req, i, &tmp);
- }
- }
- }
-}
-
-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)
-{
- trace_handle_ioreq(req, req->type, req->dir, req->df, req->data_is_ptr,
- req->addr, req->data, req->count, req->size);
-
- if (!req->data_is_ptr && (req->dir == IOREQ_WRITE) &&
- (req->size < sizeof (target_ulong))) {
- req->data &= ((target_ulong) 1 << (8 * req->size)) - 1;
- }
-
- if (req->dir == IOREQ_WRITE)
- trace_handle_ioreq_write(req, req->type, req->df, req->data_is_ptr,
- req->addr, req->data, req->count, req->size);
-
- switch (req->type) {
- case IOREQ_TYPE_PIO:
- cpu_ioreq_pio(req);
- break;
- 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:
- 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);
- }
- if (req->dir == IOREQ_READ) {
- trace_handle_ioreq_read(req, req->type, req->df, req->data_is_ptr,
- req->addr, req->data, req->count, req->size);
- }
-}
-
-static int handle_buffered_iopage(XenIOState *state)
-{
- buffered_iopage_t *buf_page = state->buffered_io_page;
- buf_ioreq_t *buf_req = NULL;
- ioreq_t req;
- int qw;
-
- if (!buf_page) {
- return 0;
- }
-
- memset(&req, 0x00, sizeof(req));
- req.state = STATE_IOREQ_READY;
- req.count = 1;
- req.dir = IOREQ_WRITE;
-
- for (;;) {
- uint32_t rdptr = buf_page->read_pointer, wrptr;
-
- xen_rmb();
- wrptr = buf_page->write_pointer;
- xen_rmb();
- if (rdptr != buf_page->read_pointer) {
- continue;
- }
- if (rdptr == wrptr) {
- break;
- }
- buf_req = &buf_page->buf_ioreq[rdptr % IOREQ_BUFFER_SLOT_NUM];
- req.size = 1U << buf_req->size;
- req.addr = buf_req->addr;
- req.data = buf_req->data;
- req.type = buf_req->type;
- xen_rmb();
- qw = (req.size == 8);
- if (qw) {
- if (rdptr + 1 == wrptr) {
- hw_error("Incomplete quad word buffered ioreq");
- }
- buf_req = &buf_page->buf_ioreq[(rdptr + 1) %
- IOREQ_BUFFER_SLOT_NUM];
- req.data |= ((uint64_t)buf_req->data) << 32;
- xen_rmb();
- }
-
- handle_ioreq(state, &req);
-
- /* Only req.data may get updated by handle_ioreq(), albeit even that
- * should not happen as such data would never make it to the guest (we
- * can only usefully see writes here after all).
- */
- assert(req.state == STATE_IOREQ_READY);
- assert(req.count == 1);
- assert(req.dir == IOREQ_WRITE);
- assert(!req.data_is_ptr);
-
- atomic_add(&buf_page->read_pointer, qw + 1);
- }
-
- return req.count;
-}
-
-static void handle_buffered_io(void *opaque)
-{
- XenIOState *state = opaque;
-
- if (handle_buffered_iopage(state)) {
- timer_mod(state->buffered_io_timer,
- BUFFER_IO_MAX_DELAY + qemu_clock_get_ms(QEMU_CLOCK_REALTIME));
- } else {
- timer_del(state->buffered_io_timer);
- xenevtchn_unmask(state->xce_handle, state->bufioreq_local_port);
- }
-}
-
-static void cpu_handle_ioreq(void *opaque)
-{
- XenIOState *state = opaque;
- ioreq_t *req = cpu_get_ioreq(state);
-
- handle_buffered_iopage(state);
- if (req) {
- ioreq_t copy = *req;
-
- xen_rmb();
- handle_ioreq(state, ©);
- req->data = copy.data;
-
- if (req->state != STATE_IOREQ_INPROCESS) {
- fprintf(stderr, "Badness in I/O request ... not in service?!: "
- "%x, ptr: %x, port: %"PRIx64", "
- "data: %"PRIx64", count: %u, size: %u, type: %u\n",
- req->state, req->data_is_ptr, req->addr,
- req->data, req->count, req->size, req->type);
- destroy_hvm_domain(false);
- return;
- }
-
- xen_wmb(); /* Update ioreq contents /then/ update state. */
-
- /*
- * We do this before we send the response so that the tools
- * have the opportunity to pick up on the reset before the
- * guest resumes and does a hlt with interrupts disabled which
- * causes Xen to powerdown the domain.
- */
- if (runstate_is_running()) {
- if (qemu_shutdown_requested_get()) {
- destroy_hvm_domain(false);
- }
- if (qemu_reset_requested_get()) {
- qemu_system_reset(VMRESET_REPORT);
- destroy_hvm_domain(true);
- }
- }
-
- req->state = STATE_IORESP_READY;
- xenevtchn_notify(state->xce_handle,
- state->ioreq_local_port[state->send_vcpu]);
- }
-}
-
-static void xen_main_loop_prepare(XenIOState *state)
-{
- int evtchn_fd = -1;
-
- if (state->xce_handle != NULL) {
- evtchn_fd = xenevtchn_fd(state->xce_handle);
- }
-
- state->buffered_io_timer = timer_new_ms(QEMU_CLOCK_REALTIME,
handle_buffered_io,
- 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 *state = opaque;
-
- if (running) {
- 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)
-{
- XenIOState *state = container_of(n, XenIOState, exit);
-
- xenevtchn_close(state->xce_handle);
- xs_daemon_close(state->xenstore);
-}
-
-static void xen_read_physmap(XenIOState *state)
-{
- XenPhysmap *physmap = NULL;
- unsigned int len, num, i;
- char path[80], *value = NULL;
- char **entries = NULL;
-
- snprintf(path, sizeof(path),
- "/local/domain/0/device-model/%d/physmap", xen_domid);
- entries = xs_directory(state->xenstore, 0, path, &num);
- if (entries == NULL)
- return;
-
- for (i = 0; i < num; i++) {
- physmap = g_malloc(sizeof (XenPhysmap));
- physmap->phys_offset = strtoull(entries[i], NULL, 16);
- snprintf(path, sizeof(path),
- "/local/domain/0/device-model/%d/physmap/%s/start_addr",
- xen_domid, entries[i]);
- value = xs_read(state->xenstore, 0, path, &len);
- if (value == NULL) {
- g_free(physmap);
- continue;
- }
- physmap->start_addr = strtoull(value, NULL, 16);
- free(value);
-
- snprintf(path, sizeof(path),
- "/local/domain/0/device-model/%d/physmap/%s/size",
- xen_domid, entries[i]);
- value = xs_read(state->xenstore, 0, path, &len);
- if (value == NULL) {
- g_free(physmap);
- continue;
- }
- physmap->size = strtoull(value, NULL, 16);
- free(value);
-
- snprintf(path, sizeof(path),
- "/local/domain/0/device-model/%d/physmap/%s/name",
- xen_domid, entries[i]);
- physmap->name = xs_read(state->xenstore, 0, path, &len);
-
- QLIST_INSERT_HEAD(&state->physmap, physmap, list);
- }
- free(entries);
-}
-
-static void xen_wakeup_notifier(Notifier *notifier, void *data)
-{
- xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
-}
-
-void xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory)
-{
- int i, rc;
- xen_pfn_t ioreq_pfn;
- xen_pfn_t bufioreq_pfn;
- evtchn_port_t bufioreq_evtchn;
- XenIOState *state;
-
- state = g_malloc0(sizeof (XenIOState));
-
- state->xce_handle = xenevtchn_open(NULL, 0);
- if (state->xce_handle == NULL) {
- perror("xen: event channel open");
- goto err;
- }
-
- state->xenstore = xs_daemon_open();
- if (state->xenstore == NULL) {
- perror("xen: xenstore open");
- goto err;
- }
-
- xen_create_ioreq_server(xen_xc, xen_domid, &state->ioservid);
-
- state->exit.notify = xen_exit_notifier;
- qemu_add_exit_notifier(&state->exit);
-
- state->suspend.notify = xen_suspend_notifier;
- qemu_register_suspend_notifier(&state->suspend);
-
- state->wakeup.notify = xen_wakeup_notifier;
- qemu_register_wakeup_notifier(&state->wakeup);
-
- rc = xen_get_ioreq_server_info(xen_xc, xen_domid, state->ioservid,
- &ioreq_pfn, &bufioreq_pfn,
- &bufioreq_evtchn);
- if (rc < 0) {
- error_report("failed to get ioreq server info: error %d handle=%p",
- errno, xen_xc);
- goto err;
- }
-
- 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 = xenforeignmemory_map(xen_fmem, xen_domid,
- PROT_READ|PROT_WRITE,
- 1, &ioreq_pfn, NULL);
- if (state->shared_page == NULL) {
- error_report("map shared IO page returned error %d handle=%p",
- errno, xen_xc);
- goto err;
- }
-
- 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 =
- xenforeignmemory_map(xen_fmem, xen_domid, PROT_READ|PROT_WRITE,
- 1, &ioreq_pfn, NULL);
- if (state->shared_vmport_page == NULL) {
- error_report("map shared vmport IO page returned error %d
handle=%p",
- errno, xen_xc);
- goto err;
- }
- } else if (rc != -ENOSYS) {
- error_report("get vmport regs pfn returned error %d, rc=%d",
- errno, rc);
- goto err;
- }
-
- state->buffered_io_page = xenforeignmemory_map(xen_fmem, xen_domid,
- PROT_READ|PROT_WRITE,
- 1, &bufioreq_pfn, NULL);
- if (state->buffered_io_page == NULL) {
- error_report("map buffered IO page returned error %d", errno);
- goto err;
- }
-
- /* 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) {
- error_report("failed to enable ioreq server info: error %d handle=%p",
- errno, xen_xc);
- goto err;
- }
-
- state->ioreq_local_port = g_malloc0(max_cpus * sizeof (evtchn_port_t));
-
- /* FIXME: how about if we overflow the page here? */
- for (i = 0; i < max_cpus; i++) {
- rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
- xen_vcpu_eport(state->shared_page, i));
- if (rc == -1) {
- error_report("shared evtchn %d bind error %d", i, errno);
- goto err;
- }
- state->ioreq_local_port[i] = rc;
- }
-
- rc = xenevtchn_bind_interdomain(state->xce_handle, xen_domid,
- bufioreq_evtchn);
- if (rc == -1) {
- error_report("buffered evtchn bind error %d", errno);
- goto err;
- }
- state->bufioreq_local_port = rc;
-
- /* Init RAM management */
- xen_map_cache_init(xen_phys_offset_to_gaddr, state);
- xen_ram_init(pcms, ram_size, ram_memory);
-
- qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
-
- state->memory_listener = xen_memory_listener;
- QLIST_INIT(&state->physmap);
- 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) {
- error_report("xen backend core setup failed");
- goto err;
- }
- xen_be_register_common();
- xen_read_physmap(state);
-
- /* Disable ACPI build because Xen handles it */
- pcms->acpi_build_enabled = false;
-
- return;
-
-err:
- error_report("xen hardware virtual machine initialisation failed");
- exit(1);
-}
-
-void destroy_hvm_domain(bool reboot)
-{
- xc_interface *xc_handle;
- int sts;
-
- xc_handle = xc_interface_open(0, 0, 0);
- if (xc_handle == NULL) {
- fprintf(stderr, "Cannot acquire xenctrl handle\n");
- } else {
- sts = xc_domain_shutdown(xc_handle, xen_domid,
- reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff);
- if (sts != 0) {
- fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
- "sts %d, %s\n", reboot ? "reboot" : "poweroff",
- sts, strerror(errno));
- } else {
- fprintf(stderr, "Issued domain %d %s\n", xen_domid,
- reboot ? "reboot" : "poweroff");
- }
- xc_interface_close(xc_handle);
- }
-}
-
-void xen_register_framebuffer(MemoryRegion *mr)
-{
- framebuffer = mr;
-}
-
-void xen_shutdown_fatal_error(const char *fmt, ...)
-{
- va_list ap;
-
- va_start(ap, fmt);
- vfprintf(stderr, fmt, ap);
- va_end(ap);
- fprintf(stderr, "Will destroy the domain.\n");
- /* destroy the domain */
- qemu_system_shutdown_request();
-}
-
-void xen_modified_memory(ram_addr_t start, ram_addr_t length)
-{
- if (unlikely(xen_in_migration)) {
- int rc;
- ram_addr_t start_pfn, nb_pages;
-
- if (length == 0) {
- length = TARGET_PAGE_SIZE;
- }
- start_pfn = start >> TARGET_PAGE_BITS;
- nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >>
TARGET_PAGE_BITS)
- - start_pfn;
- rc = xc_hvm_modified_memory(xen_xc, xen_domid, start_pfn, nb_pages);
- if (rc) {
- fprintf(stderr,
- "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n",
- __func__, start, nb_pages, rc, strerror(-rc));
- }
- }
-}
-
-void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
-{
- if (enable) {
- memory_global_dirty_log_start();
- } else {
- memory_global_dirty_log_stop();
- }
-}
--
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