diff options
Diffstat (limited to 'hw/virtio')
| -rw-r--r-- | hw/virtio/dataplane/Makefile.objs | 2 | ||||
| -rw-r--r-- | hw/virtio/dataplane/hostmem.c | 183 | ||||
| -rw-r--r-- | hw/virtio/dataplane/vring.c | 253 | ||||
| -rw-r--r-- | hw/virtio/virtio-balloon.c | 32 | ||||
| -rw-r--r-- | hw/virtio/virtio-bus.c | 80 | ||||
| -rw-r--r-- | hw/virtio/virtio-mmio.c | 9 | ||||
| -rw-r--r-- | hw/virtio/virtio-pci.c | 122 | ||||
| -rw-r--r-- | hw/virtio/virtio-pci.h | 1 | ||||
| -rw-r--r-- | hw/virtio/virtio-rng.c | 43 | ||||
| -rw-r--r-- | hw/virtio/virtio.c | 42 |
10 files changed, 356 insertions, 411 deletions
diff --git a/hw/virtio/dataplane/Makefile.objs b/hw/virtio/dataplane/Makefile.objs index a91bf33c8b..9a8cfc0297 100644 --- a/hw/virtio/dataplane/Makefile.objs +++ b/hw/virtio/dataplane/Makefile.objs @@ -1 +1 @@ -common-obj-y += hostmem.o vring.o +common-obj-y += vring.o diff --git a/hw/virtio/dataplane/hostmem.c b/hw/virtio/dataplane/hostmem.c deleted file mode 100644 index 901d98b8a0..0000000000 --- a/hw/virtio/dataplane/hostmem.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * Thread-safe guest to host memory mapping - * - * Copyright 2012 Red Hat, Inc. and/or its affiliates - * - * Authors: - * Stefan Hajnoczi <stefanha@redhat.com> - * - * This work is licensed under the terms of the GNU GPL, version 2 or later. - * See the COPYING file in the top-level directory. - * - */ - -#include "exec/address-spaces.h" -#include "hw/virtio/dataplane/hostmem.h" - -static int hostmem_lookup_cmp(const void *phys_, const void *region_) -{ - hwaddr phys = *(const hwaddr *)phys_; - const HostMemRegion *region = region_; - - if (phys < region->guest_addr) { - return -1; - } else if (phys >= region->guest_addr + region->size) { - return 1; - } else { - return 0; - } -} - -/** - * Map guest physical address to host pointer - */ -void *hostmem_lookup(HostMem *hostmem, hwaddr phys, hwaddr len, bool is_write) -{ - HostMemRegion *region; - void *host_addr = NULL; - hwaddr offset_within_region; - - qemu_mutex_lock(&hostmem->current_regions_lock); - region = bsearch(&phys, hostmem->current_regions, - hostmem->num_current_regions, - sizeof(hostmem->current_regions[0]), - hostmem_lookup_cmp); - if (!region) { - goto out; - } - if (is_write && region->readonly) { - goto out; - } - offset_within_region = phys - region->guest_addr; - if (len <= region->size - offset_within_region) { - host_addr = region->host_addr + offset_within_region; - } -out: - qemu_mutex_unlock(&hostmem->current_regions_lock); - - return host_addr; -} - -/** - * Install new regions list - */ -static void hostmem_listener_commit(MemoryListener *listener) -{ - HostMem *hostmem = container_of(listener, HostMem, listener); - int i; - - qemu_mutex_lock(&hostmem->current_regions_lock); - for (i = 0; i < hostmem->num_current_regions; i++) { - memory_region_unref(hostmem->current_regions[i].mr); - } - g_free(hostmem->current_regions); - hostmem->current_regions = hostmem->new_regions; - hostmem->num_current_regions = hostmem->num_new_regions; - qemu_mutex_unlock(&hostmem->current_regions_lock); - - /* Reset new regions list */ - hostmem->new_regions = NULL; - hostmem->num_new_regions = 0; -} - -/** - * Add a MemoryRegionSection to the new regions list - */ -static void hostmem_append_new_region(HostMem *hostmem, - MemoryRegionSection *section) -{ - void *ram_ptr = memory_region_get_ram_ptr(section->mr); - size_t num = hostmem->num_new_regions; - size_t new_size = (num + 1) * sizeof(hostmem->new_regions[0]); - - hostmem->new_regions = g_realloc(hostmem->new_regions, new_size); - hostmem->new_regions[num] = (HostMemRegion){ - .host_addr = ram_ptr + section->offset_within_region, - .guest_addr = section->offset_within_address_space, - .size = int128_get64(section->size), - .readonly = section->readonly, - .mr = section->mr, - }; - hostmem->num_new_regions++; - - memory_region_ref(section->mr); -} - -static void hostmem_listener_append_region(MemoryListener *listener, - MemoryRegionSection *section) -{ - HostMem *hostmem = container_of(listener, HostMem, listener); - - /* Ignore non-RAM regions, we may not be able to map them */ - if (!memory_region_is_ram(section->mr)) { - return; - } - - /* Ignore regions with dirty logging, we cannot mark them dirty */ - if (memory_region_is_logging(section->mr)) { - return; - } - - hostmem_append_new_region(hostmem, section); -} - -/* We don't implement most MemoryListener callbacks, use these nop stubs */ -static void hostmem_listener_dummy(MemoryListener *listener) -{ -} - -static void hostmem_listener_section_dummy(MemoryListener *listener, - MemoryRegionSection *section) -{ -} - -static void hostmem_listener_eventfd_dummy(MemoryListener *listener, - MemoryRegionSection *section, - bool match_data, uint64_t data, - EventNotifier *e) -{ -} - -static void hostmem_listener_coalesced_mmio_dummy(MemoryListener *listener, - MemoryRegionSection *section, - hwaddr addr, hwaddr len) -{ -} - -void hostmem_init(HostMem *hostmem) -{ - memset(hostmem, 0, sizeof(*hostmem)); - - qemu_mutex_init(&hostmem->current_regions_lock); - - hostmem->listener = (MemoryListener){ - .begin = hostmem_listener_dummy, - .commit = hostmem_listener_commit, - .region_add = hostmem_listener_append_region, - .region_del = hostmem_listener_section_dummy, - .region_nop = hostmem_listener_append_region, - .log_start = hostmem_listener_section_dummy, - .log_stop = hostmem_listener_section_dummy, - .log_sync = hostmem_listener_section_dummy, - .log_global_start = hostmem_listener_dummy, - .log_global_stop = hostmem_listener_dummy, - .eventfd_add = hostmem_listener_eventfd_dummy, - .eventfd_del = hostmem_listener_eventfd_dummy, - .coalesced_mmio_add = hostmem_listener_coalesced_mmio_dummy, - .coalesced_mmio_del = hostmem_listener_coalesced_mmio_dummy, - .priority = 10, - }; - - memory_listener_register(&hostmem->listener, &address_space_memory); - if (hostmem->num_new_regions > 0) { - hostmem_listener_commit(&hostmem->listener); - } -} - -void hostmem_finalize(HostMem *hostmem) -{ - memory_listener_unregister(&hostmem->listener); - g_free(hostmem->new_regions); - g_free(hostmem->current_regions); - qemu_mutex_destroy(&hostmem->current_regions_lock); -} diff --git a/hw/virtio/dataplane/vring.c b/hw/virtio/dataplane/vring.c index 351a343806..665a1ffcb3 100644 --- a/hw/virtio/dataplane/vring.c +++ b/hw/virtio/dataplane/vring.c @@ -15,9 +15,53 @@ */ #include "trace.h" +#include "hw/hw.h" +#include "exec/memory.h" +#include "exec/address-spaces.h" #include "hw/virtio/dataplane/vring.h" #include "qemu/error-report.h" +/* vring_map can be coupled with vring_unmap or (if you still have the + * value returned in *mr) memory_region_unref. + */ +static void *vring_map(MemoryRegion **mr, hwaddr phys, hwaddr len, + bool is_write) +{ + MemoryRegionSection section = memory_region_find(get_system_memory(), phys, len); + + if (!section.mr || int128_get64(section.size) < len) { + goto out; + } + if (is_write && section.readonly) { + goto out; + } + if (!memory_region_is_ram(section.mr)) { + goto out; + } + + /* Ignore regions with dirty logging, we cannot mark them dirty */ + if (memory_region_is_logging(section.mr)) { + goto out; + } + + *mr = section.mr; + return memory_region_get_ram_ptr(section.mr) + section.offset_within_region; + +out: + memory_region_unref(section.mr); + *mr = NULL; + return NULL; +} + +static void vring_unmap(void *buffer, bool is_write) +{ + ram_addr_t addr; + MemoryRegion *mr; + + mr = qemu_ram_addr_from_host(buffer, &addr); + memory_region_unref(mr); +} + /* Map the guest's vring to host memory */ bool vring_setup(Vring *vring, VirtIODevice *vdev, int n) { @@ -27,8 +71,7 @@ bool vring_setup(Vring *vring, VirtIODevice *vdev, int n) vring->broken = false; - hostmem_init(&vring->hostmem); - vring_ptr = hostmem_lookup(&vring->hostmem, vring_addr, vring_size, true); + vring_ptr = vring_map(&vring->mr, vring_addr, vring_size, true); if (!vring_ptr) { error_report("Failed to map vring " "addr %#" HWADDR_PRIx " size %" HWADDR_PRIu, @@ -54,7 +97,7 @@ void vring_teardown(Vring *vring, VirtIODevice *vdev, int n) virtio_queue_set_last_avail_idx(vdev, n, vring->last_avail_idx); virtio_queue_invalidate_signalled_used(vdev, n); - hostmem_finalize(&vring->hostmem); + memory_region_unref(vring->mr); } /* Disable guest->host notifies */ @@ -110,14 +153,61 @@ bool vring_should_notify(VirtIODevice *vdev, Vring *vring) return vring_need_event(vring_used_event(&vring->vr), new, old); } + +static int get_desc(Vring *vring, VirtQueueElement *elem, + struct vring_desc *desc) +{ + unsigned *num; + struct iovec *iov; + hwaddr *addr; + MemoryRegion *mr; + + if (desc->flags & VRING_DESC_F_WRITE) { + num = &elem->in_num; + iov = &elem->in_sg[*num]; + addr = &elem->in_addr[*num]; + } else { + num = &elem->out_num; + iov = &elem->out_sg[*num]; + addr = &elem->out_addr[*num]; + + /* If it's an output descriptor, they're all supposed + * to come before any input descriptors. */ + if (unlikely(elem->in_num)) { + error_report("Descriptor has out after in"); + return -EFAULT; + } + } + + /* Stop for now if there are not enough iovecs available. */ + if (*num >= VIRTQUEUE_MAX_SIZE) { + return -ENOBUFS; + } + + /* TODO handle non-contiguous memory across region boundaries */ + iov->iov_base = vring_map(&mr, desc->addr, desc->len, + desc->flags & VRING_DESC_F_WRITE); + if (!iov->iov_base) { + error_report("Failed to map descriptor addr %#" PRIx64 " len %u", + (uint64_t)desc->addr, desc->len); + return -EFAULT; + } + + /* The MemoryRegion is looked up again and unref'ed later, leave the + * ref in place. */ + iov->iov_len = desc->len; + *addr = desc->addr; + *num += 1; + return 0; +} + /* This is stolen from linux/drivers/vhost/vhost.c. */ -static int get_indirect(Vring *vring, - struct iovec iov[], struct iovec *iov_end, - unsigned int *out_num, unsigned int *in_num, +static int get_indirect(Vring *vring, VirtQueueElement *elem, struct vring_desc *indirect) { struct vring_desc desc; unsigned int i = 0, count, found = 0; + int ret; /* Sanity check */ if (unlikely(indirect->len % sizeof(desc))) { @@ -139,11 +229,12 @@ static int get_indirect(Vring *vring, do { struct vring_desc *desc_ptr; + MemoryRegion *mr; /* Translate indirect descriptor */ - desc_ptr = hostmem_lookup(&vring->hostmem, - indirect->addr + found * sizeof(desc), - sizeof(desc), false); + desc_ptr = vring_map(&mr, + indirect->addr + found * sizeof(desc), + sizeof(desc), false); if (!desc_ptr) { error_report("Failed to map indirect descriptor " "addr %#" PRIx64 " len %zu", @@ -153,6 +244,7 @@ static int get_indirect(Vring *vring, return -EFAULT; } desc = *desc_ptr; + memory_region_unref(mr); /* Ensure descriptor has been loaded before accessing fields */ barrier(); /* read_barrier_depends(); */ @@ -170,42 +262,35 @@ static int get_indirect(Vring *vring, return -EFAULT; } - /* Stop for now if there are not enough iovecs available. */ - if (iov >= iov_end) { - return -ENOBUFS; - } - - iov->iov_base = hostmem_lookup(&vring->hostmem, desc.addr, desc.len, - desc.flags & VRING_DESC_F_WRITE); - if (!iov->iov_base) { - error_report("Failed to map indirect descriptor" - "addr %#" PRIx64 " len %u", - (uint64_t)desc.addr, desc.len); - vring->broken = true; - return -EFAULT; - } - iov->iov_len = desc.len; - iov++; - - /* If this is an input descriptor, increment that count. */ - if (desc.flags & VRING_DESC_F_WRITE) { - *in_num += 1; - } else { - /* If it's an output descriptor, they're all supposed - * to come before any input descriptors. */ - if (unlikely(*in_num)) { - error_report("Indirect descriptor " - "has out after in: idx %u", i); - vring->broken = true; - return -EFAULT; - } - *out_num += 1; + ret = get_desc(vring, elem, &desc); + if (ret < 0) { + vring->broken |= (ret == -EFAULT); + return ret; } i = desc.next; } while (desc.flags & VRING_DESC_F_NEXT); return 0; } +void vring_free_element(VirtQueueElement *elem) +{ + int i; + + /* This assumes that the iovecs, if changed, are never moved past + * the end of the valid area. This is true if iovec manipulations + * are done with iov_discard_front and iov_discard_back. + */ + for (i = 0; i < elem->out_num; i++) { + vring_unmap(elem->out_sg[i].iov_base, false); + } + + for (i = 0; i < elem->in_num; i++) { + vring_unmap(elem->in_sg[i].iov_base, true); + } + + g_slice_free(VirtQueueElement, elem); +} + /* This looks in the virtqueue and for the first available buffer, and converts * it to an iovec for convenient access. Since descriptors consist of some * number of output then some number of input descriptors, it's actually two @@ -218,16 +303,18 @@ static int get_indirect(Vring *vring, * Stolen from linux/drivers/vhost/vhost.c. */ int vring_pop(VirtIODevice *vdev, Vring *vring, - struct iovec iov[], struct iovec *iov_end, - unsigned int *out_num, unsigned int *in_num) + VirtQueueElement **p_elem) { struct vring_desc desc; unsigned int i, head, found = 0, num = vring->vr.num; uint16_t avail_idx, last_avail_idx; + VirtQueueElement *elem = NULL; + int ret; /* If there was a fatal error then refuse operation */ if (vring->broken) { - return -EFAULT; + ret = -EFAULT; + goto out; } /* Check it isn't doing very strange things with descriptor numbers. */ @@ -238,13 +325,14 @@ int vring_pop(VirtIODevice *vdev, Vring *vring, if (unlikely((uint16_t)(avail_idx - last_avail_idx) > num)) { error_report("Guest moved used index from %u to %u", last_avail_idx, avail_idx); - vring->broken = true; - return -EFAULT; + ret = -EFAULT; + goto out; } /* If there's nothing new since last we looked. */ if (avail_idx == last_avail_idx) { - return -EAGAIN; + ret = -EAGAIN; + goto out; } /* Only get avail ring entries after they have been exposed by guest. */ @@ -254,32 +342,33 @@ int vring_pop(VirtIODevice *vdev, Vring *vring, * the index we've seen. */ head = vring->vr.avail->ring[last_avail_idx % num]; + elem = g_slice_new(VirtQueueElement); + elem->index = head; + elem->in_num = elem->out_num = 0; + /* If their number is silly, that's an error. */ if (unlikely(head >= num)) { error_report("Guest says index %u > %u is available", head, num); - vring->broken = true; - return -EFAULT; + ret = -EFAULT; + goto out; } if (vdev->guest_features & (1 << VIRTIO_RING_F_EVENT_IDX)) { vring_avail_event(&vring->vr) = vring->vr.avail->idx; } - /* When we start there are none of either input nor output. */ - *out_num = *in_num = 0; - i = head; do { if (unlikely(i >= num)) { error_report("Desc index is %u > %u, head = %u", i, num, head); - vring->broken = true; - return -EFAULT; + ret = -EFAULT; + goto out; } if (unlikely(++found > num)) { error_report("Loop detected: last one at %u vq size %u head %u", i, num, head); - vring->broken = true; - return -EFAULT; + ret = -EFAULT; + goto out; } desc = vring->vr.desc[i]; @@ -287,64 +376,50 @@ int vring_pop(VirtIODevice *vdev, Vring *vring, barrier(); if (desc.flags & VRING_DESC_F_INDIRECT) { - int ret = get_indirect(vring, iov, iov_end, out_num, in_num, &desc); + ret = get_indirect(vring, elem, &desc); if (ret < 0) { - return ret; + goto out; } continue; } - /* If there are not enough iovecs left, stop for now. The caller - * should check if there are more descs available once they have dealt - * with the current set. - */ - if (iov >= iov_end) { - return -ENOBUFS; + ret = get_desc(vring, elem, &desc); + if (ret < 0) { + goto out; } - /* TODO handle non-contiguous memory across region boundaries */ - iov->iov_base = hostmem_lookup(&vring->hostmem, desc.addr, desc.len, - desc.flags & VRING_DESC_F_WRITE); - if (!iov->iov_base) { - error_report("Failed to map vring desc addr %#" PRIx64 " len %u", - (uint64_t)desc.addr, desc.len); - vring->broken = true; - return -EFAULT; - } - iov->iov_len = desc.len; - iov++; - - if (desc.flags & VRING_DESC_F_WRITE) { - /* If this is an input descriptor, - * increment that count. */ - *in_num += 1; - } else { - /* If it's an output descriptor, they're all supposed - * to come before any input descriptors. */ - if (unlikely(*in_num)) { - error_report("Descriptor has out after in: idx %d", i); - vring->broken = true; - return -EFAULT; - } - *out_num += 1; - } i = desc.next; } while (desc.flags & VRING_DESC_F_NEXT); /* On success, increment avail index. */ vring->last_avail_idx++; + *p_elem = elem; return head; + +out: + assert(ret < 0); + if (ret == -EFAULT) { + vring->broken = true; + } + if (elem) { + vring_free_element(elem); + } + *p_elem = NULL; + return ret; } /* After we've used one of their buffers, we tell them about it. * * Stolen from linux/drivers/vhost/vhost.c. */ -void vring_push(Vring *vring, unsigned int head, int len) +void vring_push(Vring *vring, VirtQueueElement *elem, int len) { struct vring_used_elem *used; + unsigned int head = elem->index; uint16_t new; + vring_free_element(elem); + /* Don't touch vring if a fatal error occurred */ if (vring->broken) { return; diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index 9504877120..d9754dbd33 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -337,10 +337,10 @@ static int virtio_balloon_load(QEMUFile *f, void *opaque, int version_id) return 0; } -static int virtio_balloon_device_init(VirtIODevice *vdev) +static void virtio_balloon_device_realize(DeviceState *dev, Error **errp) { - DeviceState *qdev = DEVICE(vdev); - VirtIOBalloon *s = VIRTIO_BALLOON(vdev); + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VirtIOBalloon *s = VIRTIO_BALLOON(dev); int ret; virtio_init(vdev, "virtio-balloon", VIRTIO_ID_BALLOON, 8); @@ -349,37 +349,36 @@ static int virtio_balloon_device_init(VirtIODevice *vdev) virtio_balloon_stat, s); if (ret < 0) { - virtio_cleanup(VIRTIO_DEVICE(s)); - return -1; + error_setg(errp, "Adding balloon handler failed"); + virtio_cleanup(vdev); + return; } s->ivq = virtio_add_queue(vdev, 128, virtio_balloon_handle_output); s->dvq = virtio_add_queue(vdev, 128, virtio_balloon_handle_output); s->svq = virtio_add_queue(vdev, 128, virtio_balloon_receive_stats); - register_savevm(qdev, "virtio-balloon", -1, 1, + register_savevm(dev, "virtio-balloon", -1, 1, virtio_balloon_save, virtio_balloon_load, s); - object_property_add(OBJECT(qdev), "guest-stats", "guest statistics", + object_property_add(OBJECT(dev), "guest-stats", "guest statistics", balloon_stats_get_all, NULL, NULL, s, NULL); - object_property_add(OBJECT(qdev), "guest-stats-polling-interval", "int", + object_property_add(OBJECT(dev), "guest-stats-polling-interval", "int", balloon_stats_get_poll_interval, balloon_stats_set_poll_interval, NULL, s, NULL); - return 0; } -static int virtio_balloon_device_exit(DeviceState *qdev) +static void virtio_balloon_device_unrealize(DeviceState *dev, Error **errp) { - VirtIOBalloon *s = VIRTIO_BALLOON(qdev); - VirtIODevice *vdev = VIRTIO_DEVICE(qdev); + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VirtIOBalloon *s = VIRTIO_BALLOON(dev); balloon_stats_destroy_timer(s); qemu_remove_balloon_handler(s); - unregister_savevm(qdev, "virtio-balloon", s); + unregister_savevm(dev, "virtio-balloon", s); virtio_cleanup(vdev); - return 0; } static Property virtio_balloon_properties[] = { @@ -390,10 +389,11 @@ static void virtio_balloon_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); - dc->exit = virtio_balloon_device_exit; + dc->props = virtio_balloon_properties; set_bit(DEVICE_CATEGORY_MISC, dc->categories); - vdc->init = virtio_balloon_device_init; + vdc->realize = virtio_balloon_device_realize; + vdc->unrealize = virtio_balloon_device_unrealize; vdc->get_config = virtio_balloon_get_config; vdc->set_config = virtio_balloon_set_config; vdc->get_features = virtio_balloon_get_features; diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c index e6b103c991..eb77019267 100644 --- a/hw/virtio/virtio-bus.c +++ b/hw/virtio/virtio-bus.c @@ -37,8 +37,8 @@ do { printf("virtio_bus: " fmt , ## __VA_ARGS__); } while (0) #define DPRINTF(fmt, ...) do { } while (0) #endif -/* Plug the VirtIODevice */ -int virtio_bus_plug_device(VirtIODevice *vdev) +/* A VirtIODevice is being plugged */ +int virtio_bus_device_plugged(VirtIODevice *vdev) { DeviceState *qdev = DEVICE(vdev); BusState *qbus = BUS(qdev_get_parent_bus(qdev)); @@ -46,8 +46,6 @@ int virtio_bus_plug_device(VirtIODevice *vdev) VirtioBusClass *klass = VIRTIO_BUS_GET_CLASS(bus); DPRINTF("%s: plug device.\n", qbus->name); - bus->vdev = vdev; - if (klass->device_plugged != NULL) { klass->device_plugged(qbus->parent); } @@ -58,73 +56,83 @@ int virtio_bus_plug_device(VirtIODevice *vdev) /* Reset the virtio_bus */ void virtio_bus_reset(VirtioBusState *bus) { + VirtIODevice *vdev = virtio_bus_get_device(bus); + DPRINTF("%s: reset device.\n", qbus->name); - if (bus->vdev != NULL) { - virtio_reset(bus->vdev); + if (vdev != NULL) { + virtio_reset(vdev); } } -/* Destroy the VirtIODevice */ -void virtio_bus_destroy_device(VirtioBusState *bus) +/* A VirtIODevice is being unplugged */ +void virtio_bus_device_unplugged(VirtIODevice *vdev) { - BusState *qbus = BUS(bus); - VirtioBusClass *klass = VIRTIO_BUS_GET_CLASS(bus); + DeviceState *qdev = DEVICE(vdev); + BusState *qbus = BUS(qdev_get_parent_bus(qdev)); + VirtioBusClass *klass = VIRTIO_BUS_GET_CLASS(qbus); + DPRINTF("%s: remove device.\n", qbus->name); - if (bus->vdev != NULL) { - if (klass->device_unplug != NULL) { - klass->device_unplug(qbus->parent); + if (vdev != NULL) { + if (klass->device_unplugged != NULL) { + klass->device_unplugged(qbus->parent); } - object_unparent(OBJECT(bus->vdev)); - bus->vdev = NULL; } } /* Get the device id of the plugged device. */ uint16_t virtio_bus_get_vdev_id(VirtioBusState *bus) { - assert(bus->vdev != NULL); - return bus->vdev->device_id; + VirtIODevice *vdev = virtio_bus_get_device(bus); + assert(vdev != NULL); + return vdev->device_id; } /* Get the config_len field of the plugged device. */ size_t virtio_bus_get_vdev_config_len(VirtioBusState *bus) { - assert(bus->vdev != NULL); - return bus->vdev->config_len; + VirtIODevice *vdev = virtio_bus_get_device(bus); + assert(vdev != NULL); + return vdev->config_len; } /* Get the features of the plugged device. */ uint32_t virtio_bus_get_vdev_features(VirtioBusState *bus, uint32_t requested_features) { + VirtIODevice *vdev = virtio_bus_get_device(bus); VirtioDeviceClass *k; - assert(bus->vdev != NULL); - k = VIRTIO_DEVICE_GET_CLASS(bus->vdev); + + assert(vdev != NULL); + k = VIRTIO_DEVICE_GET_CLASS(vdev); assert(k->get_features != NULL); - return k->get_features(bus->vdev, requested_features); + return k->get_features(vdev, requested_features); } /* Set the features of the plugged device. */ void virtio_bus_set_vdev_features(VirtioBusState *bus, uint32_t requested_features) { + VirtIODevice *vdev = virtio_bus_get_device(bus); VirtioDeviceClass *k; - assert(bus->vdev != NULL); - k = VIRTIO_DEVICE_GET_CLASS(bus->vdev); + + assert(vdev != NULL); + k = VIRTIO_DEVICE_GET_CLASS(vdev); if (k->set_features != NULL) { - k->set_features(bus->vdev, requested_features); + k->set_features(vdev, requested_features); } } /* Get bad features of the plugged device. */ uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus) { + VirtIODevice *vdev = virtio_bus_get_device(bus); VirtioDeviceClass *k; - assert(bus->vdev != NULL); - k = VIRTIO_DEVICE_GET_CLASS(bus->vdev); + + assert(vdev != NULL); + k = VIRTIO_DEVICE_GET_CLASS(vdev); if (k->bad_features != NULL) { - return k->bad_features(bus->vdev); + return k->bad_features(vdev); } else { return 0; } @@ -133,22 +141,26 @@ uint32_t virtio_bus_get_vdev_bad_features(VirtioBusState *bus) /* Get config of the plugged device. */ void virtio_bus_get_vdev_config(VirtioBusState *bus, uint8_t *config) { + VirtIODevice *vdev = virtio_bus_get_device(bus); VirtioDeviceClass *k; - assert(bus->vdev != NULL); - k = VIRTIO_DEVICE_GET_CLASS(bus->vdev); + + assert(vdev != NULL); + k = VIRTIO_DEVICE_GET_CLASS(vdev); if (k->get_config != NULL) { - k->get_config(bus->vdev, config); + k->get_config(vdev, config); } } /* Set config of the plugged device. */ void virtio_bus_set_vdev_config(VirtioBusState *bus, uint8_t *config) { + VirtIODevice *vdev = virtio_bus_get_device(bus); VirtioDeviceClass *k; - assert(bus->vdev != NULL); - k = VIRTIO_DEVICE_GET_CLASS(bus->vdev); + + assert(vdev != NULL); + k = VIRTIO_DEVICE_GET_CLASS(vdev); if (k->set_config != NULL) { - k->set_config(bus->vdev, config); + k->set_config(vdev, config); } } diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c index 29cf284d12..8829eb0e26 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -95,7 +95,7 @@ static void virtio_mmio_bus_new(VirtioBusState *bus, size_t bus_size, static uint64_t virtio_mmio_read(void *opaque, hwaddr offset, unsigned size) { VirtIOMMIOProxy *proxy = (VirtIOMMIOProxy *)opaque; - VirtIODevice *vdev = proxy->bus.vdev; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); DPRINTF("virtio_mmio_read offset 0x%x\n", (int)offset); @@ -185,7 +185,7 @@ static void virtio_mmio_write(void *opaque, hwaddr offset, uint64_t value, unsigned size) { VirtIOMMIOProxy *proxy = (VirtIOMMIOProxy *)opaque; - VirtIODevice *vdev = proxy->bus.vdev; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); DPRINTF("virtio_mmio_write offset 0x%x value 0x%" PRIx64 "\n", (int)offset, value); @@ -298,12 +298,13 @@ static const MemoryRegionOps virtio_mem_ops = { static void virtio_mmio_update_irq(DeviceState *opaque, uint16_t vector) { VirtIOMMIOProxy *proxy = VIRTIO_MMIO(opaque); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); int level; - if (!proxy->bus.vdev) { + if (!vdev) { return; } - level = (proxy->bus.vdev->isr != 0); + level = (vdev->isr != 0); DPRINTF("virtio_mmio setting IRQ %d\n", level); qemu_set_irq(proxy->irq, level); } diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 7647be8a3c..30c9f2b698 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -113,31 +113,40 @@ static inline VirtIOPCIProxy *to_virtio_pci_proxy_fast(DeviceState *d) static void virtio_pci_notify(DeviceState *d, uint16_t vector) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy_fast(d); + if (msix_enabled(&proxy->pci_dev)) msix_notify(&proxy->pci_dev, vector); - else - pci_set_irq(&proxy->pci_dev, proxy->vdev->isr & 1); + else { + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + pci_set_irq(&proxy->pci_dev, vdev->isr & 1); + } } static void virtio_pci_save_config(DeviceState *d, QEMUFile *f) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + pci_device_save(&proxy->pci_dev, f); msix_save(&proxy->pci_dev, f); if (msix_present(&proxy->pci_dev)) - qemu_put_be16(f, proxy->vdev->config_vector); + qemu_put_be16(f, vdev->config_vector); } static void virtio_pci_save_queue(DeviceState *d, int n, QEMUFile *f) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + if (msix_present(&proxy->pci_dev)) - qemu_put_be16(f, virtio_queue_vector(proxy->vdev, n)); + qemu_put_be16(f, virtio_queue_vector(vdev, n)); } static int virtio_pci_load_config(DeviceState *d, QEMUFile *f) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + int ret; ret = pci_device_load(&proxy->pci_dev, f); if (ret) { @@ -146,12 +155,12 @@ static int virtio_pci_load_config(DeviceState *d, QEMUFile *f) msix_unuse_all_vectors(&proxy->pci_dev); msix_load(&proxy->pci_dev, f); if (msix_present(&proxy->pci_dev)) { - qemu_get_be16s(f, &proxy->vdev->config_vector); + qemu_get_be16s(f, &vdev->config_vector); } else { - proxy->vdev->config_vector = VIRTIO_NO_VECTOR; + vdev->config_vector = VIRTIO_NO_VECTOR; } - if (proxy->vdev->config_vector != VIRTIO_NO_VECTOR) { - return msix_vector_use(&proxy->pci_dev, proxy->vdev->config_vector); + if (vdev->config_vector != VIRTIO_NO_VECTOR) { + return msix_vector_use(&proxy->pci_dev, vdev->config_vector); } return 0; } @@ -159,13 +168,15 @@ static int virtio_pci_load_config(DeviceState *d, QEMUFile *f) static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + uint16_t vector; if (msix_present(&proxy->pci_dev)) { qemu_get_be16s(f, &vector); } else { vector = VIRTIO_NO_VECTOR; } - virtio_queue_set_vector(proxy->vdev, n, vector); + virtio_queue_set_vector(vdev, n, vector); if (vector != VIRTIO_NO_VECTOR) { return msix_vector_use(&proxy->pci_dev, vector); } @@ -175,7 +186,8 @@ static int virtio_pci_load_queue(DeviceState *d, int n, QEMUFile *f) static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, int n, bool assign, bool set_handler) { - VirtQueue *vq = virtio_get_queue(proxy->vdev, n); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + VirtQueue *vq = virtio_get_queue(vdev, n); EventNotifier *notifier = virtio_queue_get_host_notifier(vq); int r = 0; @@ -200,6 +212,7 @@ static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy, static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) { + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); int n, r; if (!(proxy->flags & VIRTIO_PCI_FLAG_USE_IOEVENTFD) || @@ -209,7 +222,7 @@ static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) } for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { - if (!virtio_queue_get_num(proxy->vdev, n)) { + if (!virtio_queue_get_num(vdev, n)) { continue; } @@ -223,7 +236,7 @@ static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy) assign_error: while (--n >= 0) { - if (!virtio_queue_get_num(proxy->vdev, n)) { + if (!virtio_queue_get_num(vdev, n)) { continue; } @@ -236,6 +249,7 @@ assign_error: static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) { + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); int r; int n; @@ -244,7 +258,7 @@ static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) } for (n = 0; n < VIRTIO_PCI_QUEUE_MAX; n++) { - if (!virtio_queue_get_num(proxy->vdev, n)) { + if (!virtio_queue_get_num(vdev, n)) { continue; } @@ -257,7 +271,7 @@ static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy) static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) { VirtIOPCIProxy *proxy = opaque; - VirtIODevice *vdev = proxy->vdev; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); hwaddr pa; switch (addr) { @@ -272,7 +286,7 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) pa = (hwaddr)val << VIRTIO_PCI_QUEUE_ADDR_SHIFT; if (pa == 0) { virtio_pci_stop_ioeventfd(proxy); - virtio_reset(proxy->vdev); + virtio_reset(vdev); msix_unuse_all_vectors(&proxy->pci_dev); } else @@ -299,7 +313,7 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) } if (vdev->status == 0) { - virtio_reset(proxy->vdev); + virtio_reset(vdev); msix_unuse_all_vectors(&proxy->pci_dev); } @@ -335,7 +349,7 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val) static uint32_t virtio_ioport_read(VirtIOPCIProxy *proxy, uint32_t addr) { - VirtIODevice *vdev = proxy->vdev; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); uint32_t ret = 0xFFFFFFFF; switch (addr) { @@ -381,6 +395,7 @@ static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr, unsigned size) { VirtIOPCIProxy *proxy = opaque; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); uint64_t val = 0; if (addr < config) { @@ -390,16 +405,16 @@ static uint64_t virtio_pci_config_read(void *opaque, hwaddr addr, switch (size) { case 1: - val = virtio_config_readb(proxy->vdev, addr); + val = virtio_config_readb(vdev, addr); break; case 2: - val = virtio_config_readw(proxy->vdev, addr); + val = virtio_config_readw(vdev, addr); if (virtio_is_big_endian()) { val = bswap16(val); } break; case 4: - val = virtio_config_readl(proxy->vdev, addr); + val = virtio_config_readl(vdev, addr); if (virtio_is_big_endian()) { val = bswap32(val); } @@ -413,6 +428,7 @@ static void virtio_pci_config_write(void *opaque, hwaddr addr, { VirtIOPCIProxy *proxy = opaque; uint32_t config = VIRTIO_PCI_CONFIG(&proxy->pci_dev); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); if (addr < config) { virtio_ioport_write(proxy, addr, val); return; @@ -424,19 +440,19 @@ static void virtio_pci_config_write(void *opaque, hwaddr addr, */ switch (size) { case 1: - virtio_config_writeb(proxy->vdev, addr, val); + virtio_config_writeb(vdev, addr, val); break; case 2: if (virtio_is_big_endian()) { val = bswap16(val); } - virtio_config_writew(proxy->vdev, addr, val); + virtio_config_writew(vdev, addr, val); break; case 4: if (virtio_is_big_endian()) { val = bswap32(val); } - virtio_config_writel(proxy->vdev, addr, val); + virtio_config_writel(vdev, addr, val); break; } } @@ -455,6 +471,7 @@ static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, uint32_t val, int len) { VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); pci_default_write_config(pci_dev, address, val, len); @@ -462,8 +479,7 @@ static void virtio_write_config(PCIDevice *pci_dev, uint32_t address, !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) && !(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) { virtio_pci_stop_ioeventfd(proxy); - virtio_set_status(proxy->vdev, - proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); + virtio_set_status(vdev, vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK); } } @@ -506,7 +522,8 @@ static int kvm_virtio_pci_irqfd_use(VirtIOPCIProxy *proxy, unsigned int vector) { VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; - VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + VirtQueue *vq = virtio_get_queue(vdev, queue_no); EventNotifier *n = virtio_queue_get_guest_notifier(vq); int ret; ret = kvm_irqchip_add_irqfd_notifier(kvm_state, n, NULL, irqfd->virq); @@ -517,7 +534,8 @@ static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy, unsigned int queue_no, unsigned int vector) { - VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + VirtQueue *vq = virtio_get_queue(vdev, queue_no); EventNotifier *n = virtio_queue_get_guest_notifier(vq); VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector]; int ret; @@ -529,7 +547,7 @@ static void kvm_virtio_pci_irqfd_release(VirtIOPCIProxy *proxy, static int kvm_virtio_pci_vector_use(VirtIOPCIProxy *proxy, int nvqs) { PCIDevice *dev = &proxy->pci_dev; - VirtIODevice *vdev = proxy->vdev; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); unsigned int vector; int ret, queue_no; @@ -578,7 +596,7 @@ undo: static void kvm_virtio_pci_vector_release(VirtIOPCIProxy *proxy, int nvqs) { PCIDevice *dev = &proxy->pci_dev; - VirtIODevice *vdev = proxy->vdev; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); unsigned int vector; int queue_no; VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); @@ -606,8 +624,9 @@ static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy, unsigned int vector, MSIMessage msg) { - VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(proxy->vdev); - VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); + VirtQueue *vq = virtio_get_queue(vdev, queue_no); EventNotifier *n = virtio_queue_get_guest_notifier(vq); VirtIOIRQFD *irqfd; int ret = 0; @@ -626,10 +645,10 @@ static int virtio_pci_vq_vector_unmask(VirtIOPCIProxy *proxy, * Otherwise, set it up now. */ if (k->guest_notifier_mask) { - k->guest_notifier_mask(proxy->vdev, queue_no, false); + k->guest_notifier_mask(vdev, queue_no, false); /* Test after unmasking to avoid losing events. */ if (k->guest_notifier_pending && - k->guest_notifier_pending(proxy->vdev, queue_no)) { + k->guest_notifier_pending(vdev, queue_no)) { event_notifier_set(n); } } else { @@ -642,13 +661,14 @@ static void virtio_pci_vq_vector_mask(VirtIOPCIProxy *proxy, unsigned int queue_no, unsigned int vector) { - VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(proxy->vdev); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); /* If guest supports masking, keep irqfd but mask it. * Otherwise, clean it up now. */ if (k->guest_notifier_mask) { - k->guest_notifier_mask(proxy->vdev, queue_no, true); + k->guest_notifier_mask(vdev, queue_no, true); } else { kvm_virtio_pci_irqfd_release(proxy, queue_no, vector); } @@ -658,7 +678,7 @@ static int virtio_pci_vector_unmask(PCIDevice *dev, unsigned vector, MSIMessage msg) { VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); - VirtIODevice *vdev = proxy->vdev; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); int ret, queue_no; for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { @@ -688,7 +708,7 @@ undo: static void virtio_pci_vector_mask(PCIDevice *dev, unsigned vector) { VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); - VirtIODevice *vdev = proxy->vdev; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); int queue_no; for (queue_no = 0; queue_no < proxy->nvqs_with_notifiers; queue_no++) { @@ -707,7 +727,7 @@ static void virtio_pci_vector_poll(PCIDevice *dev, unsigned int vector_end) { VirtIOPCIProxy *proxy = container_of(dev, VirtIOPCIProxy, pci_dev); - VirtIODevice *vdev = proxy->vdev; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); int queue_no; unsigned int vector; @@ -739,8 +759,9 @@ static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign, bool with_irqfd) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(proxy->vdev); - VirtQueue *vq = virtio_get_queue(proxy->vdev, n); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); + VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev); + VirtQueue *vq = virtio_get_queue(vdev, n); EventNotifier *notifier = virtio_queue_get_guest_notifier(vq); if (assign) { @@ -755,7 +776,7 @@ static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assign, } if (!msix_enabled(&proxy->pci_dev) && vdc->guest_notifier_mask) { - vdc->guest_notifier_mask(proxy->vdev, n, !assign); + vdc->guest_notifier_mask(vdev, n, !assign); } return 0; @@ -770,7 +791,7 @@ static bool virtio_pci_query_guest_notifiers(DeviceState *d) static int virtio_pci_set_guest_notifiers(DeviceState *d, int nvqs, bool assign) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); - VirtIODevice *vdev = proxy->vdev; + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); int r, n; bool with_irqfd = msix_enabled(&proxy->pci_dev) && @@ -864,11 +885,12 @@ static int virtio_pci_set_host_notifier(DeviceState *d, int n, bool assign) static void virtio_pci_vmstate_change(DeviceState *d, bool running) { VirtIOPCIProxy *proxy = to_virtio_pci_proxy(d); + VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus); if (running) { /* Try to find out if the guest has bus master disabled, but is in ready state. Then we have a buggy guest OS. */ - if ((proxy->vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) && + if ((vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) && !(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) { proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG; } @@ -943,8 +965,6 @@ static void virtio_pci_device_plugged(DeviceState *d) uint8_t *config; uint32_t size; - proxy->vdev = bus->vdev; - config = proxy->pci_dev.config; if (proxy->class_code) { pci_config_set_class(config, proxy->class_code); @@ -982,6 +1002,15 @@ static void virtio_pci_device_plugged(DeviceState *d) proxy->host_features); } +static void virtio_pci_device_unplugged(DeviceState *d) +{ + PCIDevice *pci_dev = PCI_DEVICE(d); + VirtIOPCIProxy *proxy = VIRTIO_PCI(d); + + virtio_pci_stop_ioeventfd(proxy); + msix_uninit_exclusive_bar(pci_dev); +} + static int virtio_pci_init(PCIDevice *pci_dev) { VirtIOPCIProxy *dev = VIRTIO_PCI(pci_dev); @@ -996,9 +1025,7 @@ static int virtio_pci_init(PCIDevice *pci_dev) static void virtio_pci_exit(PCIDevice *pci_dev) { VirtIOPCIProxy *proxy = VIRTIO_PCI(pci_dev); - virtio_pci_stop_ioeventfd(proxy); memory_region_destroy(&proxy->bar); - msix_uninit_exclusive_bar(pci_dev); } static void virtio_pci_reset(DeviceState *qdev) @@ -1533,6 +1560,7 @@ static void virtio_pci_bus_class_init(ObjectClass *klass, void *data) k->set_guest_notifiers = virtio_pci_set_guest_notifiers; k->vmstate_change = virtio_pci_vmstate_change; k->device_plugged = virtio_pci_device_plugged; + k->device_unplugged = virtio_pci_device_unplugged; } static const TypeInfo virtio_pci_bus_info = { diff --git a/hw/virtio/virtio-pci.h b/hw/virtio/virtio-pci.h index 917bcc5348..dc332ae774 100644 --- a/hw/virtio/virtio-pci.h +++ b/hw/virtio/virtio-pci.h @@ -82,7 +82,6 @@ typedef struct VirtioPCIClass { struct VirtIOPCIProxy { PCIDevice pci_dev; - VirtIODevice *vdev; MemoryRegion bar; uint32_t flags; uint32_t class_code; diff --git a/hw/virtio/virtio-rng.c b/hw/virtio/virtio-rng.c index b22ccf1008..755fdee628 100644 --- a/hw/virtio/virtio-rng.c +++ b/hw/virtio/virtio-rng.c @@ -133,27 +133,27 @@ static void check_rate_limit(void *opaque) qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + vrng->conf.period_ms); } -static int virtio_rng_device_init(VirtIODevice *vdev) +static void virtio_rng_device_realize(DeviceState *dev, Error **errp) { - DeviceState *qdev = DEVICE(vdev); - VirtIORNG *vrng = VIRTIO_RNG(vdev); + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VirtIORNG *vrng = VIRTIO_RNG(dev); Error *local_err = NULL; if (!vrng->conf.period_ms > 0) { - qerror_report(QERR_INVALID_PARAMETER_VALUE, "period", - "a positive number"); - return -1; + error_set(errp, QERR_INVALID_PARAMETER_VALUE, "period", + "a positive number"); + return; } if (vrng->conf.rng == NULL) { vrng->conf.default_backend = RNG_RANDOM(object_new(TYPE_RNG_RANDOM)); - object_property_add_child(OBJECT(qdev), + object_property_add_child(OBJECT(dev), "default-backend", OBJECT(vrng->conf.default_backend), NULL); - object_property_set_link(OBJECT(qdev), + object_property_set_link(OBJECT(dev), OBJECT(vrng->conf.default_backend), "rng", NULL); } @@ -162,15 +162,14 @@ static int virtio_rng_device_init(VirtIODevice *vdev) vrng->rng = vrng->conf.rng; if (vrng->rng == NULL) { - qerror_report(QERR_INVALID_PARAMETER_VALUE, "rng", "a valid object"); - return -1; + error_set(errp, QERR_INVALID_PARAMETER_VALUE, "rng", "a valid object"); + return; } rng_backend_open(vrng->rng, &local_err); if (local_err) { - qerror_report_err(local_err); - error_free(local_err); - return -1; + error_propagate(errp, local_err); + return; } vrng->vq = virtio_add_queue(vdev, 8, handle_input); @@ -184,22 +183,19 @@ static int virtio_rng_device_init(VirtIODevice *vdev) timer_mod(vrng->rate_limit_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + vrng->conf.period_ms); - register_savevm(qdev, "virtio-rng", -1, 1, virtio_rng_save, + register_savevm(dev, "virtio-rng", -1, 1, virtio_rng_save, virtio_rng_load, vrng); - - return 0; } -static int virtio_rng_device_exit(DeviceState *qdev) +static void virtio_rng_device_unrealize(DeviceState *dev, Error **errp) { - VirtIORNG *vrng = VIRTIO_RNG(qdev); - VirtIODevice *vdev = VIRTIO_DEVICE(qdev); + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VirtIORNG *vrng = VIRTIO_RNG(dev); timer_del(vrng->rate_limit_timer); timer_free(vrng->rate_limit_timer); - unregister_savevm(qdev, "virtio-rng", vrng); + unregister_savevm(dev, "virtio-rng", vrng); virtio_cleanup(vdev); - return 0; } static Property virtio_rng_properties[] = { @@ -211,10 +207,11 @@ static void virtio_rng_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); - dc->exit = virtio_rng_device_exit; + dc->props = virtio_rng_properties; set_bit(DEVICE_CATEGORY_MISC, dc->categories); - vdc->init = virtio_rng_device_init; + vdc->realize = virtio_rng_device_realize; + vdc->unrealize = virtio_rng_device_unrealize; vdc->get_features = get_features; } diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 2f1e73bc75..a001e668c4 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -1150,35 +1150,51 @@ void virtio_device_set_child_bus_name(VirtIODevice *vdev, char *bus_name) } } -static int virtio_device_init(DeviceState *qdev) +static void virtio_device_realize(DeviceState *dev, Error **errp) { - VirtIODevice *vdev = VIRTIO_DEVICE(qdev); - VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(qdev); - assert(k->init != NULL); - if (k->init(vdev) < 0) { - return -1; + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(dev); + Error *err = NULL; + + if (vdc->realize != NULL) { + vdc->realize(dev, &err); + if (err != NULL) { + error_propagate(errp, err); + return; + } } - virtio_bus_plug_device(vdev); - return 0; + virtio_bus_device_plugged(vdev); } -static int virtio_device_exit(DeviceState *qdev) +static void virtio_device_unrealize(DeviceState *dev, Error **errp) { - VirtIODevice *vdev = VIRTIO_DEVICE(qdev); + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(dev); + Error *err = NULL; + + virtio_bus_device_unplugged(vdev); + + if (vdc->unrealize != NULL) { + vdc->unrealize(dev, &err); + if (err != NULL) { + error_propagate(errp, err); + return; + } + } if (vdev->bus_name) { g_free(vdev->bus_name); vdev->bus_name = NULL; } - return 0; } static void virtio_device_class_init(ObjectClass *klass, void *data) { /* Set the default value here. */ DeviceClass *dc = DEVICE_CLASS(klass); - dc->init = virtio_device_init; - dc->exit = virtio_device_exit; + + dc->realize = virtio_device_realize; + dc->unrealize = virtio_device_unrealize; dc->bus_type = TYPE_VIRTIO_BUS; } |