hw: move VFIO and ivshmem to hw/misc/

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 826 deletions

diff --git a/hw/ivshmem.c b/hw/ivshmem.c
deleted file mode 100644
index f92ce19dde..0000000000
--- a/hw/ivshmem.c
+++ /dev/null
@@ -1,826 +0,0 @@
-/*
- * Inter-VM Shared Memory PCI device.
- *
- * Author:
- *      Cam Macdonell <cam@cs.ualberta.ca>
- *
- * Based On: cirrus_vga.c
- *          Copyright (c) 2004 Fabrice Bellard
- *          Copyright (c) 2004 Makoto Suzuki (suzu)
- *
- *      and rtl8139.c
- *          Copyright (c) 2006 Igor Kovalenko
- *
- * This code is licensed under the GNU GPL v2.
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
- */
-#include "hw/hw.h"
-#include "hw/i386/pc.h"
-#include "hw/pci/pci.h"
-#include "hw/pci/msix.h"
-#include "sysemu/kvm.h"
-#include "migration/migration.h"
-#include "qapi/qmp/qerror.h"
-#include "qemu/event_notifier.h"
-#include "char/char.h"
-
-#include <sys/mman.h>
-#include <sys/types.h>
-
-#define PCI_VENDOR_ID_IVSHMEM   PCI_VENDOR_ID_REDHAT_QUMRANET
-#define PCI_DEVICE_ID_IVSHMEM   0x1110
-
-#define IVSHMEM_IOEVENTFD   0
-#define IVSHMEM_MSI     1
-
-#define IVSHMEM_PEER    0
-#define IVSHMEM_MASTER  1
-
-#define IVSHMEM_REG_BAR_SIZE 0x100
-
-//#define DEBUG_IVSHMEM
-#ifdef DEBUG_IVSHMEM
-#define IVSHMEM_DPRINTF(fmt, ...)        \
-    do {printf("IVSHMEM: " fmt, ## __VA_ARGS__); } while (0)
-#else
-#define IVSHMEM_DPRINTF(fmt, ...)
-#endif
-
-typedef struct Peer {
-    int nb_eventfds;
-    EventNotifier *eventfds;
-} Peer;
-
-typedef struct EventfdEntry {
-    PCIDevice *pdev;
-    int vector;
-} EventfdEntry;
-
-typedef struct IVShmemState {
-    PCIDevice dev;
-    uint32_t intrmask;
-    uint32_t intrstatus;
-    uint32_t doorbell;
-
-    CharDriverState **eventfd_chr;
-    CharDriverState *server_chr;
-    MemoryRegion ivshmem_mmio;
-
-    /* We might need to register the BAR before we actually have the memory.
-     * So prepare a container MemoryRegion for the BAR immediately and
-     * add a subregion when we have the memory.
-     */
-    MemoryRegion bar;
-    MemoryRegion ivshmem;
-    uint64_t ivshmem_size; /* size of shared memory region */
-    uint32_t ivshmem_attr;
-    uint32_t ivshmem_64bit;
-    int shm_fd; /* shared memory file descriptor */
-
-    Peer *peers;
-    int nb_peers; /* how many guests we have space for */
-    int max_peer; /* maximum numbered peer */
-
-    int vm_id;
-    uint32_t vectors;
-    uint32_t features;
-    EventfdEntry *eventfd_table;
-
-    Error *migration_blocker;
-
-    char * shmobj;
-    char * sizearg;
-    char * role;
-    int role_val;   /* scalar to avoid multiple string comparisons */
-} IVShmemState;
-
-/* registers for the Inter-VM shared memory device */
-enum ivshmem_registers {
-    INTRMASK = 0,
-    INTRSTATUS = 4,
-    IVPOSITION = 8,
-    DOORBELL = 12,
-};
-
-static inline uint32_t ivshmem_has_feature(IVShmemState *ivs,
-                                                    unsigned int feature) {
-    return (ivs->features & (1 << feature));
-}
-
-static inline bool is_power_of_two(uint64_t x) {
-    return (x & (x - 1)) == 0;
-}
-
-/* accessing registers - based on rtl8139 */
-static void ivshmem_update_irq(IVShmemState *s, int val)
-{
-    int isr;
-    isr = (s->intrstatus & s->intrmask) & 0xffffffff;
-
-    /* don't print ISR resets */
-    if (isr) {
-        IVSHMEM_DPRINTF("Set IRQ to %d (%04x %04x)\n",
-           isr ? 1 : 0, s->intrstatus, s->intrmask);
-    }
-
-    qemu_set_irq(s->dev.irq[0], (isr != 0));
-}
-
-static void ivshmem_IntrMask_write(IVShmemState *s, uint32_t val)
-{
-    IVSHMEM_DPRINTF("IntrMask write(w) val = 0x%04x\n", val);
-
-    s->intrmask = val;
-
-    ivshmem_update_irq(s, val);
-}
-
-static uint32_t ivshmem_IntrMask_read(IVShmemState *s)
-{
-    uint32_t ret = s->intrmask;
-
-    IVSHMEM_DPRINTF("intrmask read(w) val = 0x%04x\n", ret);
-
-    return ret;
-}
-
-static void ivshmem_IntrStatus_write(IVShmemState *s, uint32_t val)
-{
-    IVSHMEM_DPRINTF("IntrStatus write(w) val = 0x%04x\n", val);
-
-    s->intrstatus = val;
-
-    ivshmem_update_irq(s, val);
-}
-
-static uint32_t ivshmem_IntrStatus_read(IVShmemState *s)
-{
-    uint32_t ret = s->intrstatus;
-
-    /* reading ISR clears all interrupts */
-    s->intrstatus = 0;
-
-    ivshmem_update_irq(s, 0);
-
-    return ret;
-}
-
-static void ivshmem_io_write(void *opaque, hwaddr addr,
-                             uint64_t val, unsigned size)
-{
-    IVShmemState *s = opaque;
-
-    uint16_t dest = val >> 16;
-    uint16_t vector = val & 0xff;
-
-    addr &= 0xfc;
-
-    IVSHMEM_DPRINTF("writing to addr " TARGET_FMT_plx "\n", addr);
-    switch (addr)
-    {
-        case INTRMASK:
-            ivshmem_IntrMask_write(s, val);
-            break;
-
-        case INTRSTATUS:
-            ivshmem_IntrStatus_write(s, val);
-            break;
-
-        case DOORBELL:
-            /* check that dest VM ID is reasonable */
-            if (dest > s->max_peer) {
-                IVSHMEM_DPRINTF("Invalid destination VM ID (%d)\n", dest);
-                break;
-            }
-
-            /* check doorbell range */
-            if (vector < s->peers[dest].nb_eventfds) {
-                IVSHMEM_DPRINTF("Notifying VM %d on vector %d\n", dest, vector);
-                event_notifier_set(&s->peers[dest].eventfds[vector]);
-            }
-            break;
-        default:
-            IVSHMEM_DPRINTF("Invalid VM Doorbell VM %d\n", dest);
-    }
-}
-
-static uint64_t ivshmem_io_read(void *opaque, hwaddr addr,
-                                unsigned size)
-{
-
-    IVShmemState *s = opaque;
-    uint32_t ret;
-
-    switch (addr)
-    {
-        case INTRMASK:
-            ret = ivshmem_IntrMask_read(s);
-            break;
-
-        case INTRSTATUS:
-            ret = ivshmem_IntrStatus_read(s);
-            break;
-
-        case IVPOSITION:
-            /* return my VM ID if the memory is mapped */
-            if (s->shm_fd > 0) {
-                ret = s->vm_id;
-            } else {
-                ret = -1;
-            }
-            break;
-
-        default:
-            IVSHMEM_DPRINTF("why are we reading " TARGET_FMT_plx "\n", addr);
-            ret = 0;
-    }
-
-    return ret;
-}
-
-static const MemoryRegionOps ivshmem_mmio_ops = {
-    .read = ivshmem_io_read,
-    .write = ivshmem_io_write,
-    .endianness = DEVICE_NATIVE_ENDIAN,
-    .impl = {
-        .min_access_size = 4,
-        .max_access_size = 4,
-    },
-};
-
-static void ivshmem_receive(void *opaque, const uint8_t *buf, int size)
-{
-    IVShmemState *s = opaque;
-
-    ivshmem_IntrStatus_write(s, *buf);
-
-    IVSHMEM_DPRINTF("ivshmem_receive 0x%02x\n", *buf);
-}
-
-static int ivshmem_can_receive(void * opaque)
-{
-    return 8;
-}
-
-static void ivshmem_event(void *opaque, int event)
-{
-    IVSHMEM_DPRINTF("ivshmem_event %d\n", event);
-}
-
-static void fake_irqfd(void *opaque, const uint8_t *buf, int size) {
-
-    EventfdEntry *entry = opaque;
-    PCIDevice *pdev = entry->pdev;
-
-    IVSHMEM_DPRINTF("interrupt on vector %p %d\n", pdev, entry->vector);
-    msix_notify(pdev, entry->vector);
-}
-
-static CharDriverState* create_eventfd_chr_device(void * opaque, EventNotifier *n,
-                                                  int vector)
-{
-    /* create a event character device based on the passed eventfd */
-    IVShmemState *s = opaque;
-    CharDriverState * chr;
-    int eventfd = event_notifier_get_fd(n);
-
-    chr = qemu_chr_open_eventfd(eventfd);
-
-    if (chr == NULL) {
-        fprintf(stderr, "creating eventfd for eventfd %d failed\n", eventfd);
-        exit(-1);
-    }
-    qemu_chr_fe_claim_no_fail(chr);
-
-    /* if MSI is supported we need multiple interrupts */
-    if (ivshmem_has_feature(s, IVSHMEM_MSI)) {
-        s->eventfd_table[vector].pdev = &s->dev;
-        s->eventfd_table[vector].vector = vector;
-
-        qemu_chr_add_handlers(chr, ivshmem_can_receive, fake_irqfd,
-                      ivshmem_event, &s->eventfd_table[vector]);
-    } else {
-        qemu_chr_add_handlers(chr, ivshmem_can_receive, ivshmem_receive,
-                      ivshmem_event, s);
-    }
-
-    return chr;
-
-}
-
-static int check_shm_size(IVShmemState *s, int fd) {
-    /* check that the guest isn't going to try and map more memory than the
-     * the object has allocated return -1 to indicate error */
-
-    struct stat buf;
-
-    fstat(fd, &buf);
-
-    if (s->ivshmem_size > buf.st_size) {
-        fprintf(stderr,
-                "IVSHMEM ERROR: Requested memory size greater"
-                " than shared object size (%" PRIu64 " > %" PRIu64")\n",
-                s->ivshmem_size, (uint64_t)buf.st_size);
-        return -1;
-    } else {
-        return 0;
-    }
-}
-
-/* create the shared memory BAR when we are not using the server, so we can
- * create the BAR and map the memory immediately */
-static void create_shared_memory_BAR(IVShmemState *s, int fd) {
-
-    void * ptr;
-
-    s->shm_fd = fd;
-
-    ptr = mmap(0, s->ivshmem_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
-
-    memory_region_init_ram_ptr(&s->ivshmem, "ivshmem.bar2",
-                               s->ivshmem_size, ptr);
-    vmstate_register_ram(&s->ivshmem, &s->dev.qdev);
-    memory_region_add_subregion(&s->bar, 0, &s->ivshmem);
-
-    /* region for shared memory */
-    pci_register_bar(&s->dev, 2, s->ivshmem_attr, &s->bar);
-}
-
-static void ivshmem_add_eventfd(IVShmemState *s, int posn, int i)
-{
-    memory_region_add_eventfd(&s->ivshmem_mmio,
-                              DOORBELL,
-                              4,
-                              true,
-                              (posn << 16) | i,
-                              &s->peers[posn].eventfds[i]);
-}
-
-static void ivshmem_del_eventfd(IVShmemState *s, int posn, int i)
-{
-    memory_region_del_eventfd(&s->ivshmem_mmio,
-                              DOORBELL,
-                              4,
-                              true,
-                              (posn << 16) | i,
-                              &s->peers[posn].eventfds[i]);
-}
-
-static void close_guest_eventfds(IVShmemState *s, int posn)
-{
-    int i, guest_curr_max;
-
-    if (!ivshmem_has_feature(s, IVSHMEM_IOEVENTFD)) {
-        return;
-    }
-
-    guest_curr_max = s->peers[posn].nb_eventfds;
-
-    memory_region_transaction_begin();
-    for (i = 0; i < guest_curr_max; i++) {
-        ivshmem_del_eventfd(s, posn, i);
-    }
-    memory_region_transaction_commit();
-    for (i = 0; i < guest_curr_max; i++) {
-        event_notifier_cleanup(&s->peers[posn].eventfds[i]);
-    }
-
-    g_free(s->peers[posn].eventfds);
-    s->peers[posn].nb_eventfds = 0;
-}
-
-/* this function increase the dynamic storage need to store data about other
- * guests */
-static void increase_dynamic_storage(IVShmemState *s, int new_min_size) {
-
-    int j, old_nb_alloc;
-
-    old_nb_alloc = s->nb_peers;
-
-    while (new_min_size >= s->nb_peers)
-        s->nb_peers = s->nb_peers * 2;
-
-    IVSHMEM_DPRINTF("bumping storage to %d guests\n", s->nb_peers);
-    s->peers = g_realloc(s->peers, s->nb_peers * sizeof(Peer));
-
-    /* zero out new pointers */
-    for (j = old_nb_alloc; j < s->nb_peers; j++) {
-        s->peers[j].eventfds = NULL;
-        s->peers[j].nb_eventfds = 0;
-    }
-}
-
-static void ivshmem_read(void *opaque, const uint8_t * buf, int flags)
-{
-    IVShmemState *s = opaque;
-    int incoming_fd, tmp_fd;
-    int guest_max_eventfd;
-    long incoming_posn;
-
-    memcpy(&incoming_posn, buf, sizeof(long));
-    /* pick off s->server_chr->msgfd and store it, posn should accompany msg */
-    tmp_fd = qemu_chr_fe_get_msgfd(s->server_chr);
-    IVSHMEM_DPRINTF("posn is %ld, fd is %d\n", incoming_posn, tmp_fd);
-
-    /* make sure we have enough space for this guest */
-    if (incoming_posn >= s->nb_peers) {
-        increase_dynamic_storage(s, incoming_posn);
-    }
-
-    if (tmp_fd == -1) {
-        /* if posn is positive and unseen before then this is our posn*/
-        if ((incoming_posn >= 0) &&
-                            (s->peers[incoming_posn].eventfds == NULL)) {
-            /* receive our posn */
-            s->vm_id = incoming_posn;
-            return;
-        } else {
-            /* otherwise an fd == -1 means an existing guest has gone away */
-            IVSHMEM_DPRINTF("posn %ld has gone away\n", incoming_posn);
-            close_guest_eventfds(s, incoming_posn);
-            return;
-        }
-    }
-
-    /* because of the implementation of get_msgfd, we need a dup */
-    incoming_fd = dup(tmp_fd);
-
-    if (incoming_fd == -1) {
-        fprintf(stderr, "could not allocate file descriptor %s\n",
-                                                            strerror(errno));
-        return;
-    }
-
-    /* if the position is -1, then it's shared memory region fd */
-    if (incoming_posn == -1) {
-
-        void * map_ptr;
-
-        s->max_peer = 0;
-
-        if (check_shm_size(s, incoming_fd) == -1) {
-            exit(-1);
-        }
-
-        /* mmap the region and map into the BAR2 */
-        map_ptr = mmap(0, s->ivshmem_size, PROT_READ|PROT_WRITE, MAP_SHARED,
-                                                            incoming_fd, 0);
-        memory_region_init_ram_ptr(&s->ivshmem,
-                                   "ivshmem.bar2", s->ivshmem_size, map_ptr);
-        vmstate_register_ram(&s->ivshmem, &s->dev.qdev);
-
-        IVSHMEM_DPRINTF("guest h/w addr = %" PRIu64 ", size = %" PRIu64 "\n",
-                         s->ivshmem_offset, s->ivshmem_size);
-
-        memory_region_add_subregion(&s->bar, 0, &s->ivshmem);
-
-        /* only store the fd if it is successfully mapped */
-        s->shm_fd = incoming_fd;
-
-        return;
-    }
-
-    /* each guest has an array of eventfds, and we keep track of how many
-     * guests for each VM */
-    guest_max_eventfd = s->peers[incoming_posn].nb_eventfds;
-
-    if (guest_max_eventfd == 0) {
-        /* one eventfd per MSI vector */
-        s->peers[incoming_posn].eventfds = g_new(EventNotifier, s->vectors);
-    }
-
-    /* this is an eventfd for a particular guest VM */
-    IVSHMEM_DPRINTF("eventfds[%ld][%d] = %d\n", incoming_posn,
-                                            guest_max_eventfd, incoming_fd);
-    event_notifier_init_fd(&s->peers[incoming_posn].eventfds[guest_max_eventfd],
-                           incoming_fd);
-
-    /* increment count for particular guest */
-    s->peers[incoming_posn].nb_eventfds++;
-
-    /* keep track of the maximum VM ID */
-    if (incoming_posn > s->max_peer) {
-        s->max_peer = incoming_posn;
-    }
-
-    if (incoming_posn == s->vm_id) {
-        s->eventfd_chr[guest_max_eventfd] = create_eventfd_chr_device(s,
-                   &s->peers[s->vm_id].eventfds[guest_max_eventfd],
-                   guest_max_eventfd);
-    }
-
-    if (ivshmem_has_feature(s, IVSHMEM_IOEVENTFD)) {
-        ivshmem_add_eventfd(s, incoming_posn, guest_max_eventfd);
-    }
-}
-
-/* Select the MSI-X vectors used by device.
- * ivshmem maps events to vectors statically, so
- * we just enable all vectors on init and after reset. */
-static void ivshmem_use_msix(IVShmemState * s)
-{
-    int i;
-
-    if (!msix_present(&s->dev)) {
-        return;
-    }
-
-    for (i = 0; i < s->vectors; i++) {
-        msix_vector_use(&s->dev, i);
-    }
-}
-
-static void ivshmem_reset(DeviceState *d)
-{
-    IVShmemState *s = DO_UPCAST(IVShmemState, dev.qdev, d);
-
-    s->intrstatus = 0;
-    ivshmem_use_msix(s);
-}
-
-static uint64_t ivshmem_get_size(IVShmemState * s) {
-
-    uint64_t value;
-    char *ptr;
-
-    value = strtoull(s->sizearg, &ptr, 10);
-    switch (*ptr) {
-        case 0: case 'M': case 'm':
-            value <<= 20;
-            break;
-        case 'G': case 'g':
-            value <<= 30;
-            break;
-        default:
-            fprintf(stderr, "qemu: invalid ram size: %s\n", s->sizearg);
-            exit(1);
-    }
-
-    /* BARs must be a power of 2 */
-    if (!is_power_of_two(value)) {
-        fprintf(stderr, "ivshmem: size must be power of 2\n");
-        exit(1);
-    }
-
-    return value;
-}
-
-static void ivshmem_setup_msi(IVShmemState * s)
-{
-    if (msix_init_exclusive_bar(&s->dev, s->vectors, 1)) {
-        IVSHMEM_DPRINTF("msix initialization failed\n");
-        exit(1);
-    }
-
-    IVSHMEM_DPRINTF("msix initialized (%d vectors)\n", s->vectors);
-
-    /* allocate QEMU char devices for receiving interrupts */
-    s->eventfd_table = g_malloc0(s->vectors * sizeof(EventfdEntry));
-
-    ivshmem_use_msix(s);
-}
-
-static void ivshmem_save(QEMUFile* f, void *opaque)
-{
-    IVShmemState *proxy = opaque;
-
-    IVSHMEM_DPRINTF("ivshmem_save\n");
-    pci_device_save(&proxy->dev, f);
-
-    if (ivshmem_has_feature(proxy, IVSHMEM_MSI)) {
-        msix_save(&proxy->dev, f);
-    } else {
-        qemu_put_be32(f, proxy->intrstatus);
-        qemu_put_be32(f, proxy->intrmask);
-    }
-
-}
-
-static int ivshmem_load(QEMUFile* f, void *opaque, int version_id)
-{
-    IVSHMEM_DPRINTF("ivshmem_load\n");
-
-    IVShmemState *proxy = opaque;
-    int ret;
-
-    if (version_id > 0) {
-        return -EINVAL;
-    }
-
-    if (proxy->role_val == IVSHMEM_PEER) {
-        fprintf(stderr, "ivshmem: 'peer' devices are not migratable\n");
-        return -EINVAL;
-    }
-
-    ret = pci_device_load(&proxy->dev, f);
-    if (ret) {
-        return ret;
-    }
-
-    if (ivshmem_has_feature(proxy, IVSHMEM_MSI)) {
-        msix_load(&proxy->dev, f);
-	ivshmem_use_msix(proxy);
-    } else {
-        proxy->intrstatus = qemu_get_be32(f);
-        proxy->intrmask = qemu_get_be32(f);
-    }
-
-    return 0;
-}
-
-static void ivshmem_write_config(PCIDevice *pci_dev, uint32_t address,
-				 uint32_t val, int len)
-{
-    pci_default_write_config(pci_dev, address, val, len);
-    msix_write_config(pci_dev, address, val, len);
-}
-
-static int pci_ivshmem_init(PCIDevice *dev)
-{
-    IVShmemState *s = DO_UPCAST(IVShmemState, dev, dev);
-    uint8_t *pci_conf;
-
-    if (s->sizearg == NULL)
-        s->ivshmem_size = 4 << 20; /* 4 MB default */
-    else {
-        s->ivshmem_size = ivshmem_get_size(s);
-    }
-
-    register_savevm(&s->dev.qdev, "ivshmem", 0, 0, ivshmem_save, ivshmem_load,
-                                                                        dev);
-
-    /* IRQFD requires MSI */
-    if (ivshmem_has_feature(s, IVSHMEM_IOEVENTFD) &&
-        !ivshmem_has_feature(s, IVSHMEM_MSI)) {
-        fprintf(stderr, "ivshmem: ioeventfd/irqfd requires MSI\n");
-        exit(1);
-    }
-
-    /* check that role is reasonable */
-    if (s->role) {
-        if (strncmp(s->role, "peer", 5) == 0) {
-            s->role_val = IVSHMEM_PEER;
-        } else if (strncmp(s->role, "master", 7) == 0) {
-            s->role_val = IVSHMEM_MASTER;
-        } else {
-            fprintf(stderr, "ivshmem: 'role' must be 'peer' or 'master'\n");
-            exit(1);
-        }
-    } else {
-        s->role_val = IVSHMEM_MASTER; /* default */
-    }
-
-    if (s->role_val == IVSHMEM_PEER) {
-        error_set(&s->migration_blocker, QERR_DEVICE_FEATURE_BLOCKS_MIGRATION,
-                  "peer mode", "ivshmem");
-        migrate_add_blocker(s->migration_blocker);
-    }
-
-    pci_conf = s->dev.config;
-    pci_conf[PCI_COMMAND] = PCI_COMMAND_IO | PCI_COMMAND_MEMORY;
-
-    pci_config_set_interrupt_pin(pci_conf, 1);
-
-    s->shm_fd = 0;
-
-    memory_region_init_io(&s->ivshmem_mmio, &ivshmem_mmio_ops, s,
-                          "ivshmem-mmio", IVSHMEM_REG_BAR_SIZE);
-
-    /* region for registers*/
-    pci_register_bar(&s->dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY,
-                     &s->ivshmem_mmio);
-
-    memory_region_init(&s->bar, "ivshmem-bar2-container", s->ivshmem_size);
-    s->ivshmem_attr = PCI_BASE_ADDRESS_SPACE_MEMORY |
-        PCI_BASE_ADDRESS_MEM_PREFETCH;
-    if (s->ivshmem_64bit) {
-        s->ivshmem_attr |= PCI_BASE_ADDRESS_MEM_TYPE_64;
-    }
-
-    if ((s->server_chr != NULL) &&
-                        (strncmp(s->server_chr->filename, "unix:", 5) == 0)) {
-        /* if we get a UNIX socket as the parameter we will talk
-         * to the ivshmem server to receive the memory region */
-
-        if (s->shmobj != NULL) {
-            fprintf(stderr, "WARNING: do not specify both 'chardev' "
-                                                "and 'shm' with ivshmem\n");
-        }
-
-        IVSHMEM_DPRINTF("using shared memory server (socket = %s)\n",
-                                                    s->server_chr->filename);
-
-        if (ivshmem_has_feature(s, IVSHMEM_MSI)) {
-            ivshmem_setup_msi(s);
-        }
-
-        /* we allocate enough space for 16 guests and grow as needed */
-        s->nb_peers = 16;
-        s->vm_id = -1;
-
-        /* allocate/initialize space for interrupt handling */
-        s->peers = g_malloc0(s->nb_peers * sizeof(Peer));
-
-        pci_register_bar(&s->dev, 2, s->ivshmem_attr, &s->bar);
-
-        s->eventfd_chr = g_malloc0(s->vectors * sizeof(CharDriverState *));
-
-        qemu_chr_add_handlers(s->server_chr, ivshmem_can_receive, ivshmem_read,
-                     ivshmem_event, s);
-    } else {
-        /* just map the file immediately, we're not using a server */
-        int fd;
-
-        if (s->shmobj == NULL) {
-            fprintf(stderr, "Must specify 'chardev' or 'shm' to ivshmem\n");
-        }
-
-        IVSHMEM_DPRINTF("using shm_open (shm object = %s)\n", s->shmobj);
-
-        /* try opening with O_EXCL and if it succeeds zero the memory
-         * by truncating to 0 */
-        if ((fd = shm_open(s->shmobj, O_CREAT|O_RDWR|O_EXCL,
-                        S_IRWXU|S_IRWXG|S_IRWXO)) > 0) {
-           /* truncate file to length PCI device's memory */
-            if (ftruncate(fd, s->ivshmem_size) != 0) {
-                fprintf(stderr, "ivshmem: could not truncate shared file\n");
-            }
-
-        } else if ((fd = shm_open(s->shmobj, O_CREAT|O_RDWR,
-                        S_IRWXU|S_IRWXG|S_IRWXO)) < 0) {
-            fprintf(stderr, "ivshmem: could not open shared file\n");
-            exit(-1);
-
-        }
-
-        if (check_shm_size(s, fd) == -1) {
-            exit(-1);
-        }
-
-        create_shared_memory_BAR(s, fd);
-
-    }
-
-    s->dev.config_write = ivshmem_write_config;
-
-    return 0;
-}
-
-static void pci_ivshmem_uninit(PCIDevice *dev)
-{
-    IVShmemState *s = DO_UPCAST(IVShmemState, dev, dev);
-
-    if (s->migration_blocker) {
-        migrate_del_blocker(s->migration_blocker);
-        error_free(s->migration_blocker);
-    }
-
-    memory_region_destroy(&s->ivshmem_mmio);
-    memory_region_del_subregion(&s->bar, &s->ivshmem);
-    vmstate_unregister_ram(&s->ivshmem, &s->dev.qdev);
-    memory_region_destroy(&s->ivshmem);
-    memory_region_destroy(&s->bar);
-    unregister_savevm(&dev->qdev, "ivshmem", s);
-}
-
-static Property ivshmem_properties[] = {
-    DEFINE_PROP_CHR("chardev", IVShmemState, server_chr),
-    DEFINE_PROP_STRING("size", IVShmemState, sizearg),
-    DEFINE_PROP_UINT32("vectors", IVShmemState, vectors, 1),
-    DEFINE_PROP_BIT("ioeventfd", IVShmemState, features, IVSHMEM_IOEVENTFD, false),
-    DEFINE_PROP_BIT("msi", IVShmemState, features, IVSHMEM_MSI, true),
-    DEFINE_PROP_STRING("shm", IVShmemState, shmobj),
-    DEFINE_PROP_STRING("role", IVShmemState, role),
-    DEFINE_PROP_UINT32("use64", IVShmemState, ivshmem_64bit, 1),
-    DEFINE_PROP_END_OF_LIST(),
-};
-
-static void ivshmem_class_init(ObjectClass *klass, void *data)
-{
-    DeviceClass *dc = DEVICE_CLASS(klass);
-    PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
-
-    k->init = pci_ivshmem_init;
-    k->exit = pci_ivshmem_uninit;
-    k->vendor_id = PCI_VENDOR_ID_IVSHMEM;
-    k->device_id = PCI_DEVICE_ID_IVSHMEM;
-    k->class_id = PCI_CLASS_MEMORY_RAM;
-    dc->reset = ivshmem_reset;
-    dc->props = ivshmem_properties;
-}
-
-static const TypeInfo ivshmem_info = {
-    .name          = "ivshmem",
-    .parent        = TYPE_PCI_DEVICE,
-    .instance_size = sizeof(IVShmemState),
-    .class_init    = ivshmem_class_init,
-};
-
-static void ivshmem_register_types(void)
-{
-    type_register_static(&ivshmem_info);
-}
-
-type_init(ivshmem_register_types)