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virtio, pc, pci: features, fixes, cleanups

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virtio-pmem support.
 libvhost user mq support.
 A bunch of fixes all over the place.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio, pc, pci: features, fixes, cleanups

virtio-pmem support.
libvhost user mq support.
A bunch of fixes all over the place.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 04 Jul 2019 22:00:49 BST
# gpg:                using RSA key 281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (22 commits)
  docs: avoid vhost-user-net specifics in multiqueue section
  libvhost-user: implement VHOST_USER_PROTOCOL_F_MQ
  libvhost-user: support many virtqueues
  libvhost-user: add vmsg_set_reply_u64() helper
  pc: Move compat_apic_id_mode variable to PCMachineClass
  virtio: Don't change "started" flag on virtio_vmstate_change()
  virtio: Make sure we get correct state of device on handle_aio_output()
  virtio: Set "start_on_kick" on virtio_set_features()
  virtio: Set "start_on_kick" for legacy devices
  virtio: add "use-started" property
  virtio-pci: fix missing device properties
  pc: Support for virtio-pmem-pci
  numa: Handle virtio-pmem in NUMA stats
  hmp: Handle virtio-pmem when printing memory device infos
  virtio-pci: Proxy for virtio-pmem
  virtio-pmem: sync linux headers
  virtio-pci: Allow to specify additional interfaces for the base type
  virtio-pmem: add virtio device
  pcie: minor cleanups for slot control/status
  pcie: work around for racy guest init
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2019-07-05 09:51:50 +01:00
commit c35d17cabc
36 changed files with 843 additions and 161 deletions
Download patch file Download diff file Expand all files Collapse all files

4
hw/block/vhost-user-blk.c
View file

@ -191,7 +191,7 @@ static void vhost_user_blk_stop(VirtIODevice *vdev)
static void vhost_user_blk_set_status(VirtIODevice *vdev, uint8_t status)
{
VHostUserBlk *s = VHOST_USER_BLK(vdev);
bool should_start = vdev->started;
bool should_start = virtio_device_started(vdev, status);
int ret;
if (!vdev->vm_running) {
@ -317,7 +317,7 @@ static int vhost_user_blk_connect(DeviceState *dev)
}
/* restore vhost state */
if (vdev->started) {
if (virtio_device_started(vdev, vdev->status)) {
ret = vhost_user_blk_start(vdev);
if (ret < 0) {
error_report("vhost-user-blk: vhost start failed: %s",

1
hw/core/machine.c
View file

@ -30,6 +30,7 @@ GlobalProperty hw_compat_4_0[] = {
{ "bochs-display", "edid", "false" },
{ "virtio-vga", "edid", "false" },
{ "virtio-gpu-pci", "edid", "false" },
{ "virtio-device", "use-started", "false" },
};
const size_t hw_compat_4_0_len = G_N_ELEMENTS(hw_compat_4_0);

24
hw/core/numa.c
View file

@ -533,6 +533,7 @@ static void numa_stat_memory_devices(NumaNodeMem node_mem[])
MemoryDeviceInfoList *info_list = qmp_memory_device_list();
MemoryDeviceInfoList *info;
PCDIMMDeviceInfo *pcdimm_info;
VirtioPMEMDeviceInfo *vpi;
for (info = info_list; info; info = info->next) {
MemoryDeviceInfo *value = info->value;
@ -540,22 +541,21 @@ static void numa_stat_memory_devices(NumaNodeMem node_mem[])
if (value) {
switch (value->type) {
case MEMORY_DEVICE_INFO_KIND_DIMM:
pcdimm_info = value->u.dimm.data;
break;
case MEMORY_DEVICE_INFO_KIND_NVDIMM:
pcdimm_info = value->u.nvdimm.data;
break;
default:
pcdimm_info = NULL;
break;
}
if (pcdimm_info) {
pcdimm_info = value->type == MEMORY_DEVICE_INFO_KIND_DIMM ?
value->u.dimm.data : value->u.nvdimm.data;
node_mem[pcdimm_info->node].node_mem += pcdimm_info->size;
node_mem[pcdimm_info->node].node_plugged_mem +=
pcdimm_info->size;
break;
case MEMORY_DEVICE_INFO_KIND_VIRTIO_PMEM:
vpi = value->u.virtio_pmem.data;
/* TODO: once we support numa, assign to right node */
node_mem[0].node_mem += vpi->size;
node_mem[0].node_plugged_mem += vpi->size;
break;
default:
g_assert_not_reached();
}
}
}

1
hw/i386/Kconfig
View file

@ -30,6 +30,7 @@ config PC
# For ACPI builder:
select SERIAL_ISA
select ACPI_VMGENID
select VIRTIO_PMEM_SUPPORTED
config PC_PCI
bool

94
hw/i386/pc.c
View file

@ -79,6 +79,8 @@
#include "hw/i386/intel_iommu.h"
#include "hw/net/ne2000-isa.h"
#include "standard-headers/asm-x86/bootparam.h"
#include "hw/virtio/virtio-pmem-pci.h"
#include "hw/mem/memory-device.h"
/* debug PC/ISA interrupts */
//#define DEBUG_IRQ
@ -913,14 +915,6 @@ bool e820_get_entry(int idx, uint32_t type, uint64_t *address, uint64_t *length)
return false;
}
/* Enables contiguous-apic-ID mode, for compatibility */
static bool compat_apic_id_mode;
void enable_compat_apic_id_mode(void)
{
compat_apic_id_mode = true;
}
/* Calculates initial APIC ID for a specific CPU index
*
* Currently we need to be able to calculate the APIC ID from the CPU index
@ -928,13 +922,15 @@ void enable_compat_apic_id_mode(void)
* no concept of "CPU index", and the NUMA tables on fw_cfg need the APIC ID of
* all CPUs up to max_cpus.
*/
static uint32_t x86_cpu_apic_id_from_index(unsigned int cpu_index)
static uint32_t x86_cpu_apic_id_from_index(PCMachineState *pcms,
unsigned int cpu_index)
{
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
uint32_t correct_id;
static bool warned;
correct_id = x86_apicid_from_cpu_idx(smp_cores, smp_threads, cpu_index);
if (compat_apic_id_mode) {
if (pcmc->compat_apic_id_mode) {
if (cpu_index != correct_id && !warned && !qtest_enabled()) {
error_report("APIC IDs set in compatibility mode, "
"CPU topology won't match the configuration");
@ -1533,7 +1529,8 @@ static void pc_new_cpu(const char *typename, int64_t apic_id, Error **errp)
void pc_hot_add_cpu(const int64_t id, Error **errp)
{
MachineState *ms = MACHINE(qdev_get_machine());
int64_t apic_id = x86_cpu_apic_id_from_index(id);
PCMachineState *pcms = PC_MACHINE(ms);
int64_t apic_id = x86_cpu_apic_id_from_index(pcms, id);
Error *local_err = NULL;
if (id < 0) {
@ -1569,7 +1566,7 @@ void pc_cpus_init(PCMachineState *pcms)
*
* This is used for FW_CFG_MAX_CPUS. See comments on bochs_bios_init().
*/
pcms->apic_id_limit = x86_cpu_apic_id_from_index(max_cpus - 1) + 1;
pcms->apic_id_limit = x86_cpu_apic_id_from_index(pcms, max_cpus - 1) + 1;
possible_cpus = mc->possible_cpu_arch_ids(ms);
for (i = 0; i < smp_cpus; i++) {
pc_new_cpu(possible_cpus->cpus[i].type, possible_cpus->cpus[i].arch_id,
@ -2395,6 +2392,65 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
numa_cpu_pre_plug(cpu_slot, dev, errp);
}
static void pc_virtio_pmem_pci_pre_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
HotplugHandler *hotplug_dev2 = qdev_get_bus_hotplug_handler(dev);
Error *local_err = NULL;
if (!hotplug_dev2) {
/*
* Without a bus hotplug handler, we cannot control the plug/unplug
* order. This should never be the case on x86, however better add
* a safety net.
*/
error_setg(errp, "virtio-pmem-pci not supported on this bus.");
return;
}
/*
* First, see if we can plug this memory device at all. If that
* succeeds, branch of to the actual hotplug handler.
*/
memory_device_pre_plug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev), NULL,
&local_err);
if (!local_err) {
hotplug_handler_pre_plug(hotplug_dev2, dev, &local_err);
}
error_propagate(errp, local_err);
}
static void pc_virtio_pmem_pci_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
HotplugHandler *hotplug_dev2 = qdev_get_bus_hotplug_handler(dev);
Error *local_err = NULL;
/*
* Plug the memory device first and then branch off to the actual
* hotplug handler. If that one fails, we can easily undo the memory
* device bits.
*/
memory_device_plug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev));
hotplug_handler_plug(hotplug_dev2, dev, &local_err);
if (local_err) {
memory_device_unplug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev));
}
error_propagate(errp, local_err);
}
static void pc_virtio_pmem_pci_unplug_request(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
/* We don't support virtio pmem hot unplug */
error_setg(errp, "virtio pmem device unplug not supported.");
}
static void pc_virtio_pmem_pci_unplug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
/* We don't support virtio pmem hot unplug */
}
static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
@ -2402,6 +2458,8 @@ static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,
pc_memory_pre_plug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
pc_cpu_pre_plug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
pc_virtio_pmem_pci_pre_plug(hotplug_dev, dev, errp);
}
}
@ -2412,6 +2470,8 @@ static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev,
pc_memory_plug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
pc_cpu_plug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
pc_virtio_pmem_pci_plug(hotplug_dev, dev, errp);
}
}
@ -2422,6 +2482,8 @@ static void pc_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev,
pc_memory_unplug_request(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
pc_cpu_unplug_request_cb(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
pc_virtio_pmem_pci_unplug_request(hotplug_dev, dev, errp);
} else {
error_setg(errp, "acpi: device unplug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
@ -2435,6 +2497,8 @@ static void pc_machine_device_unplug_cb(HotplugHandler *hotplug_dev,
pc_memory_unplug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
pc_cpu_unplug_cb(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
pc_virtio_pmem_pci_unplug(hotplug_dev, dev, errp);
} else {
error_setg(errp, "acpi: device unplug for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
@ -2445,7 +2509,8 @@ static HotplugHandler *pc_get_hotplug_handler(MachineState *machine,
DeviceState *dev)
{
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) ||
object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
object_dynamic_cast(OBJECT(dev), TYPE_CPU) ||
object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
return HOTPLUG_HANDLER(machine);
}
@ -2660,6 +2725,7 @@ static int64_t pc_get_default_cpu_node_id(const MachineState *ms, int idx)
static const CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *ms)
{
PCMachineState *pcms = PC_MACHINE(ms);
int i;
if (ms->possible_cpus) {
@ -2679,7 +2745,7 @@ static const CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *ms)
ms->possible_cpus->cpus[i].type = ms->cpu_type;
ms->possible_cpus->cpus[i].vcpus_count = 1;
ms->possible_cpus->cpus[i].arch_id = x86_cpu_apic_id_from_index(i);
ms->possible_cpus->cpus[i].arch_id = x86_cpu_apic_id_from_index(pcms, i);
x86_topo_ids_from_apicid(ms->possible_cpus->cpus[i].arch_id,
smp_cores, smp_threads, &topo);
ms->possible_cpus->cpus[i].props.has_socket_id = true;

3
hw/i386/pc_piix.c
View file

@ -358,7 +358,6 @@ static void pc_compat_1_4_fn(MachineState *machine)
static void pc_compat_1_3(MachineState *machine)
{
pc_compat_1_4_fn(machine);
enable_compat_apic_id_mode();
}
/* PC compat function for pc-0.14 to pc-1.2 */
@ -708,6 +707,7 @@ DEFINE_I440FX_MACHINE(v1_4, "pc-i440fx-1.4", pc_compat_1_4_fn,
static void pc_i440fx_1_3_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
static GlobalProperty compat[] = {
PC_CPU_MODEL_IDS("1.3.0")
{ "usb-tablet", "usb_version", "1" },
@ -718,6 +718,7 @@ static void pc_i440fx_1_3_machine_options(MachineClass *m)
pc_i440fx_1_4_machine_options(m);
m->hw_version = "1.3.0";
pcmc->compat_apic_id_mode = true;
compat_props_add(m->compat_props, compat, G_N_ELEMENTS(compat));
}

5
hw/pci-bridge/pcie_root_port.c
View file

@ -31,10 +31,13 @@ static void rp_write_config(PCIDevice *d, uint32_t address,
{
uint32_t root_cmd =
pci_get_long(d->config + d->exp.aer_cap + PCI_ERR_ROOT_COMMAND);
uint16_t slt_ctl, slt_sta;
pcie_cap_slot_get(d, &slt_ctl, &slt_sta);
pci_bridge_write_config(d, address, val, len);
rp_aer_vector_update(d);
pcie_cap_slot_write_config(d, address, val, len);
pcie_cap_slot_write_config(d, slt_ctl, slt_sta, address, val, len);
pcie_aer_write_config(d, address, val, len);
pcie_aer_root_write_config(d, address, val, len, root_cmd);
}

5
hw/pci-bridge/xio3130_downstream.c
View file

@ -41,9 +41,12 @@
static void xio3130_downstream_write_config(PCIDevice *d, uint32_t address,
uint32_t val, int len)
{
uint16_t slt_ctl, slt_sta;
pcie_cap_slot_get(d, &slt_sta, &slt_ctl);
pci_bridge_write_config(d, address, val, len);
pcie_cap_flr_write_config(d, address, val, len);
pcie_cap_slot_write_config(d, address, val, len);
pcie_cap_slot_write_config(d, slt_ctl, slt_sta, address, val, len);
pcie_aer_write_config(d, address, val, len);
}

40
hw/pci/pcie.c
View file

@ -383,7 +383,7 @@ static void pcie_cap_slot_event(PCIDevice *dev, PCIExpressHotPlugEvent event)
{
/* Minor optimization: if nothing changed - no event is needed. */
if (pci_word_test_and_set_mask(dev->config + dev->exp.exp_cap +
PCI_EXP_SLTSTA, event)) {
PCI_EXP_SLTSTA, event) == event) {
return;
}
hotplug_event_notify(dev);
@ -594,7 +594,16 @@ void pcie_cap_slot_reset(PCIDevice *dev)
hotplug_event_update_event_status(dev);
}
void pcie_cap_slot_get(PCIDevice *dev, uint16_t *slt_ctl, uint16_t *slt_sta)
{
uint32_t pos = dev->exp.exp_cap;
uint8_t *exp_cap = dev->config + pos;
*slt_ctl = pci_get_word(exp_cap + PCI_EXP_SLTCTL);
*slt_sta = pci_get_word(exp_cap + PCI_EXP_SLTSTA);
}
void pcie_cap_slot_write_config(PCIDevice *dev,
uint16_t old_slt_ctl, uint16_t old_slt_sta,
uint32_t addr, uint32_t val, int len)
{
uint32_t pos = dev->exp.exp_cap;
@ -602,6 +611,25 @@ void pcie_cap_slot_write_config(PCIDevice *dev,
uint16_t sltsta = pci_get_word(exp_cap + PCI_EXP_SLTSTA);
if (ranges_overlap(addr, len, pos + PCI_EXP_SLTSTA, 2)) {
/*
* Guests tend to clears all bits during init.
* If they clear bits that weren't set this is racy and will lose events:
* not a big problem for manual button presses, but a problem for us.
* As a work-around, detect this and revert status to what it was
* before the write.
*
* Note: in theory this can be detected as a duplicate button press
* which cancels the previous press. Does not seem to happen in
* practice as guests seem to only have this bug during init.
*/
#define PCIE_SLOT_EVENTS (PCI_EXP_SLTSTA_ABP | PCI_EXP_SLTSTA_PFD | \
PCI_EXP_SLTSTA_MRLSC | PCI_EXP_SLTSTA_PDC | \
PCI_EXP_SLTSTA_CC)
if (val & ~old_slt_sta & PCIE_SLOT_EVENTS) {
sltsta = (sltsta & ~PCIE_SLOT_EVENTS) | (old_slt_sta & PCIE_SLOT_EVENTS);
pci_set_word(exp_cap + PCI_EXP_SLTSTA, sltsta);
}
hotplug_event_clear(dev);
}
@ -619,11 +647,17 @@ void pcie_cap_slot_write_config(PCIDevice *dev,
}
/*
* If the slot is polulated, power indicator is off and power
* If the slot is populated, power indicator is off and power
* controller is off, it is safe to detach the devices.
*
* Note: don't detach if condition was already true:
* this is a work around for guests that overwrite
* control of powered off slots before powering them on.
*/
if ((sltsta & PCI_EXP_SLTSTA_PDS) && (val & PCI_EXP_SLTCTL_PCC) &&
((val & PCI_EXP_SLTCTL_PIC_OFF) == PCI_EXP_SLTCTL_PIC_OFF)) {
(val & PCI_EXP_SLTCTL_PIC_OFF) == PCI_EXP_SLTCTL_PIC_OFF &&
(!(old_slt_ctl & PCI_EXP_SLTCTL_PCC) ||
(old_slt_ctl & PCI_EXP_SLTCTL_PIC_OFF) != PCI_EXP_SLTCTL_PIC_OFF)) {
PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(dev));
pci_for_each_device(sec_bus, pci_bus_num(sec_bus),
pcie_unplug_device, NULL);

10
hw/virtio/Kconfig
View file

@ -29,3 +29,13 @@ config VIRTIO_CRYPTO
bool
default y
depends on VIRTIO
config VIRTIO_PMEM_SUPPORTED
bool
config VIRTIO_PMEM
bool
default y
depends on VIRTIO
depends on VIRTIO_PMEM_SUPPORTED
select MEM_DEVICE

2
hw/virtio/Makefile.objs
View file

@ -12,6 +12,8 @@ common-obj-$(CONFIG_VIRTIO_MMIO) += virtio-mmio.o
obj-$(CONFIG_VIRTIO_BALLOON) += virtio-balloon.o
obj-$(CONFIG_VIRTIO_CRYPTO) += virtio-crypto.o
obj-$(call land,$(CONFIG_VIRTIO_CRYPTO),$(CONFIG_VIRTIO_PCI)) += virtio-crypto-pci.o
obj-$(CONFIG_VIRTIO_PMEM) += virtio-pmem.o
common-obj-$(call land,$(CONFIG_VIRTIO_PMEM),$(CONFIG_VIRTIO_PCI)) += virtio-pmem-pci.o
obj-$(CONFIG_VHOST_VSOCK) += vhost-vsock.o
ifeq ($(CONFIG_VIRTIO_PCI),y)

29
hw/virtio/virtio-pci.c
View file

@ -1913,13 +1913,6 @@ static void virtio_pci_generic_class_init(ObjectClass *klass, void *data)
dc->props = virtio_pci_generic_properties;
}
/* Used when the generic type and the base type is the same */
static void virtio_pci_generic_base_class_init(ObjectClass *klass, void *data)
{
virtio_pci_base_class_init(klass, data);
virtio_pci_generic_class_init(klass, NULL);
}
static void virtio_pci_transitional_instance_init(Object *obj)
{
VirtIOPCIProxy *proxy = VIRTIO_PCI(obj);
@ -1938,15 +1931,15 @@ static void virtio_pci_non_transitional_instance_init(Object *obj)
void virtio_pci_types_register(const VirtioPCIDeviceTypeInfo *t)
{
char *base_name = NULL;
TypeInfo base_type_info = {
.name = t->base_name,
.parent = t->parent ? t->parent : TYPE_VIRTIO_PCI,
.instance_size = t->instance_size,
.instance_init = t->instance_init,
.class_size = t->class_size,
.class_init = virtio_pci_base_class_init,
.class_data = (void *)t,
.abstract = true,
.interfaces = t->interfaces,
};
TypeInfo generic_type_info = {
.name = t->generic_name,
@ -1961,13 +1954,20 @@ void virtio_pci_types_register(const VirtioPCIDeviceTypeInfo *t)
if (!base_type_info.name) {
/* No base type -> register a single generic device type */
base_type_info.name = t->generic_name;
base_type_info.class_init = virtio_pci_generic_base_class_init;
base_type_info.interfaces = generic_type_info.interfaces;
base_type_info.abstract = false;
generic_type_info.name = NULL;
/* use intermediate %s-base-type to add generic device props */
base_name = g_strdup_printf("%s-base-type", t->generic_name);
base_type_info.name = base_name;
base_type_info.class_init = virtio_pci_generic_class_init;
generic_type_info.parent = base_name;
generic_type_info.class_init = virtio_pci_base_class_init;
generic_type_info.class_data = (void *)t;
assert(!t->non_transitional_name);
assert(!t->transitional_name);
} else {
base_type_info.class_init = virtio_pci_base_class_init;
base_type_info.class_data = (void *)t;
}
type_register(&base_type_info);
@ -2005,6 +2005,7 @@ void virtio_pci_types_register(const VirtioPCIDeviceTypeInfo *t)
};
type_register(&transitional_type_info);
}
g_free(base_name);
}
/* virtio-pci-bus */

1
hw/virtio/virtio-pci.h
View file

@ -252,6 +252,7 @@ typedef struct VirtioPCIDeviceTypeInfo {
size_t class_size;
void (*instance_init)(Object *obj);
void (*class_init)(ObjectClass *klass, void *data);
InterfaceInfo *interfaces;
} VirtioPCIDeviceTypeInfo;
/* Register virtio-pci type(s). @t must be static. */

131
hw/virtio/virtio-pmem-pci.c Normal file
View file

@ -0,0 +1,131 @@
/*
* Virtio PMEM PCI device
*
* Copyright (C) 2018-2019 Red Hat, Inc.
*
* Authors:
* Pankaj Gupta <pagupta@redhat.com>
* David Hildenbrand <david@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "virtio-pmem-pci.h"
#include "hw/mem/memory-device.h"
#include "qapi/error.h"
static void virtio_pmem_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VirtIOPMEMPCI *pmem_pci = VIRTIO_PMEM_PCI(vpci_dev);
DeviceState *vdev = DEVICE(&pmem_pci->vdev);
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", errp);
}
static void virtio_pmem_pci_set_addr(MemoryDeviceState *md, uint64_t addr,
Error **errp)
{
object_property_set_uint(OBJECT(md), addr, VIRTIO_PMEM_ADDR_PROP, errp);
}
static uint64_t virtio_pmem_pci_get_addr(const MemoryDeviceState *md)
{
return object_property_get_uint(OBJECT(md), VIRTIO_PMEM_ADDR_PROP,
&error_abort);
}
static MemoryRegion *virtio_pmem_pci_get_memory_region(MemoryDeviceState *md,
Error **errp)
{
VirtIOPMEMPCI *pci_pmem = VIRTIO_PMEM_PCI(md);
VirtIOPMEM *pmem = VIRTIO_PMEM(&pci_pmem->vdev);
VirtIOPMEMClass *vpc = VIRTIO_PMEM_GET_CLASS(pmem);
return vpc->get_memory_region(pmem, errp);
}
static uint64_t virtio_pmem_pci_get_plugged_size(const MemoryDeviceState *md,
Error **errp)
{
VirtIOPMEMPCI *pci_pmem = VIRTIO_PMEM_PCI(md);
VirtIOPMEM *pmem = VIRTIO_PMEM(&pci_pmem->vdev);
VirtIOPMEMClass *vpc = VIRTIO_PMEM_GET_CLASS(pmem);
MemoryRegion *mr = vpc->get_memory_region(pmem, errp);
/* the plugged size corresponds to the region size */
return mr ? 0 : memory_region_size(mr);
}
static void virtio_pmem_pci_fill_device_info(const MemoryDeviceState *md,
MemoryDeviceInfo *info)
{
VirtioPMEMDeviceInfo *vi = g_new0(VirtioPMEMDeviceInfo, 1);
VirtIOPMEMPCI *pci_pmem = VIRTIO_PMEM_PCI(md);
VirtIOPMEM *pmem = VIRTIO_PMEM(&pci_pmem->vdev);
VirtIOPMEMClass *vpc = VIRTIO_PMEM_GET_CLASS(pmem);
DeviceState *dev = DEVICE(md);
if (dev->id) {
vi->has_id = true;
vi->id = g_strdup(dev->id);
}
/* let the real device handle everything else */
vpc->fill_device_info(pmem, vi);
info->u.virtio_pmem.data = vi;
info->type = MEMORY_DEVICE_INFO_KIND_VIRTIO_PMEM;
}
static void virtio_pmem_pci_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(klass);
k->realize = virtio_pmem_pci_realize;
set_bit(DEVICE_CATEGORY_MISC, dc->categories);
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_PMEM;
pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
pcidev_k->class_id = PCI_CLASS_OTHERS;
mdc->get_addr = virtio_pmem_pci_get_addr;
mdc->set_addr = virtio_pmem_pci_set_addr;
mdc->get_plugged_size = virtio_pmem_pci_get_plugged_size;
mdc->get_memory_region = virtio_pmem_pci_get_memory_region;
mdc->fill_device_info = virtio_pmem_pci_fill_device_info;
}
static void virtio_pmem_pci_instance_init(Object *obj)
{
VirtIOPMEMPCI *dev = VIRTIO_PMEM_PCI(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VIRTIO_PMEM);
}
static const VirtioPCIDeviceTypeInfo virtio_pmem_pci_info = {
.base_name = TYPE_VIRTIO_PMEM_PCI,
.generic_name = "virtio-pmem-pci",
.transitional_name = "virtio-pmem-pci-transitional",
.non_transitional_name = "virtio-pmem-pci-non-transitional",
.instance_size = sizeof(VirtIOPMEMPCI),
.instance_init = virtio_pmem_pci_instance_init,
.class_init = virtio_pmem_pci_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_MEMORY_DEVICE },
{ }
},
};
static void virtio_pmem_pci_register_types(void)
{
virtio_pci_types_register(&virtio_pmem_pci_info);
}
type_init(virtio_pmem_pci_register_types)

34
hw/virtio/virtio-pmem-pci.h Normal file
View file

@ -0,0 +1,34 @@
/*
* Virtio PMEM PCI device
*
* Copyright (C) 2018-2019 Red Hat, Inc.
*
* Authors:
* Pankaj Gupta <pagupta@redhat.com>
* David Hildenbrand <david@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2.
* See the COPYING file in the top-level directory.
*/
#ifndef QEMU_VIRTIO_PMEM_PCI_H
#define QEMU_VIRTIO_PMEM_PCI_H
#include "hw/virtio/virtio-pci.h"
#include "hw/virtio/virtio-pmem.h"
typedef struct VirtIOPMEMPCI VirtIOPMEMPCI;
/*
* virtio-pmem-pci: This extends VirtioPCIProxy.
*/
#define TYPE_VIRTIO_PMEM_PCI "virtio-pmem-pci-base"
#define VIRTIO_PMEM_PCI(obj) \
OBJECT_CHECK(VirtIOPMEMPCI, (obj), TYPE_VIRTIO_PMEM_PCI)
struct VirtIOPMEMPCI {
VirtIOPCIProxy parent_obj;
VirtIOPMEM vdev;
};
#endif /* QEMU_VIRTIO_PMEM_PCI_H */

189
hw/virtio/virtio-pmem.c Normal file
View file

@ -0,0 +1,189 @@
/*
* Virtio PMEM device
*
* Copyright (C) 2018-2019 Red Hat, Inc.
*
* Authors:
* Pankaj Gupta <pagupta@redhat.com>
* David Hildenbrand <david@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu-common.h"
#include "qemu/error-report.h"
#include "hw/virtio/virtio-pmem.h"
#include "hw/virtio/virtio-access.h"
#include "standard-headers/linux/virtio_ids.h"
#include "standard-headers/linux/virtio_pmem.h"
#include "block/aio.h"
#include "block/thread-pool.h"
typedef struct VirtIODeviceRequest {
VirtQueueElement elem;
int fd;
VirtIOPMEM *pmem;
VirtIODevice *vdev;
struct virtio_pmem_req req;
struct virtio_pmem_resp resp;
} VirtIODeviceRequest;
static int worker_cb(void *opaque)
{
VirtIODeviceRequest *req_data = opaque;
int err = 0;
/* flush raw backing image */
err = fsync(req_data->fd);
if (err != 0) {
err = 1;
}
virtio_stw_p(req_data->vdev, &req_data->resp.ret, err);
return 0;
}
static void done_cb(void *opaque, int ret)
{
VirtIODeviceRequest *req_data = opaque;
int len = iov_from_buf(req_data->elem.in_sg, req_data->elem.in_num, 0,
&req_data->resp, sizeof(struct virtio_pmem_resp));
/* Callbacks are serialized, so no need to use atomic ops. */
virtqueue_push(req_data->pmem->rq_vq, &req_data->elem, len);
virtio_notify((VirtIODevice *)req_data->pmem, req_data->pmem->rq_vq);
g_free(req_data);
}
static void virtio_pmem_flush(VirtIODevice *vdev, VirtQueue *vq)
{
VirtIODeviceRequest *req_data;
VirtIOPMEM *pmem = VIRTIO_PMEM(vdev);
HostMemoryBackend *backend = MEMORY_BACKEND(pmem->memdev);
ThreadPool *pool = aio_get_thread_pool(qemu_get_aio_context());
req_data = virtqueue_pop(vq, sizeof(VirtIODeviceRequest));
if (!req_data) {
virtio_error(vdev, "virtio-pmem missing request data");
return;
}
if (req_data->elem.out_num < 1 || req_data->elem.in_num < 1) {
virtio_error(vdev, "virtio-pmem request not proper");
g_free(req_data);
return;
}
req_data->fd = memory_region_get_fd(&backend->mr);
req_data->pmem = pmem;
req_data->vdev = vdev;
thread_pool_submit_aio(pool, worker_cb, req_data, done_cb, req_data);
}
static void virtio_pmem_get_config(VirtIODevice *vdev, uint8_t *config)
{
VirtIOPMEM *pmem = VIRTIO_PMEM(vdev);
struct virtio_pmem_config *pmemcfg = (struct virtio_pmem_config *) config;
virtio_stq_p(vdev, &pmemcfg->start, pmem->start);
virtio_stq_p(vdev, &pmemcfg->size, memory_region_size(&pmem->memdev->mr));
}
static uint64_t virtio_pmem_get_features(VirtIODevice *vdev, uint64_t features,
Error **errp)
{
return features;
}
static void virtio_pmem_realize(DeviceState *dev, Error **errp)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VirtIOPMEM *pmem = VIRTIO_PMEM(dev);
if (!pmem->memdev) {
error_setg(errp, "virtio-pmem memdev not set");
return;
}
if (host_memory_backend_is_mapped(pmem->memdev)) {
char *path = object_get_canonical_path_component(OBJECT(pmem->memdev));
error_setg(errp, "can't use already busy memdev: %s", path);
g_free(path);
return;
}
host_memory_backend_set_mapped(pmem->memdev, true);
virtio_init(vdev, TYPE_VIRTIO_PMEM, VIRTIO_ID_PMEM,
sizeof(struct virtio_pmem_config));
pmem->rq_vq = virtio_add_queue(vdev, 128, virtio_pmem_flush);
}
static void virtio_pmem_unrealize(DeviceState *dev, Error **errp)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VirtIOPMEM *pmem = VIRTIO_PMEM(dev);
host_memory_backend_set_mapped(pmem->memdev, false);
virtio_cleanup(vdev);
}
static void virtio_pmem_fill_device_info(const VirtIOPMEM *pmem,
VirtioPMEMDeviceInfo *vi)
{
vi->memaddr = pmem->start;
vi->size = pmem->memdev ? memory_region_size(&pmem->memdev->mr) : 0;
vi->memdev = object_get_canonical_path(OBJECT(pmem->memdev));
}
static MemoryRegion *virtio_pmem_get_memory_region(VirtIOPMEM *pmem,
Error **errp)
{
if (!pmem->memdev) {
error_setg(errp, "'%s' property must be set", VIRTIO_PMEM_MEMDEV_PROP);
return NULL;
}
return &pmem->memdev->mr;
}
static Property virtio_pmem_properties[] = {
DEFINE_PROP_UINT64(VIRTIO_PMEM_ADDR_PROP, VirtIOPMEM, start, 0),
DEFINE_PROP_LINK(VIRTIO_PMEM_MEMDEV_PROP, VirtIOPMEM, memdev,
TYPE_MEMORY_BACKEND, HostMemoryBackend *),
DEFINE_PROP_END_OF_LIST(),
};
static void virtio_pmem_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
VirtIOPMEMClass *vpc = VIRTIO_PMEM_CLASS(klass);
dc->props = virtio_pmem_properties;
vdc->realize = virtio_pmem_realize;
vdc->unrealize = virtio_pmem_unrealize;
vdc->get_config = virtio_pmem_get_config;
vdc->get_features = virtio_pmem_get_features;
vpc->fill_device_info = virtio_pmem_fill_device_info;
vpc->get_memory_region = virtio_pmem_get_memory_region;
}
static TypeInfo virtio_pmem_info = {
.name = TYPE_VIRTIO_PMEM,
.parent = TYPE_VIRTIO_DEVICE,
.class_size = sizeof(VirtIOPMEMClass),
.class_init = virtio_pmem_class_init,
.instance_size = sizeof(VirtIOPMEM),
};
static void virtio_register_types(void)
{
type_register_static(&virtio_pmem_info);
}
type_init(virtio_register_types)

53
hw/virtio/virtio.c
View file

@ -1162,9 +1162,10 @@ int virtio_set_status(VirtIODevice *vdev, uint8_t val)
}
}
}
vdev->started = val & VIRTIO_CONFIG_S_DRIVER_OK;
if (unlikely(vdev->start_on_kick && vdev->started)) {
vdev->start_on_kick = false;
if ((vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) !=
(val & VIRTIO_CONFIG_S_DRIVER_OK)) {
virtio_set_started(vdev, val & VIRTIO_CONFIG_S_DRIVER_OK);
}
if (k->set_status) {
@ -1214,8 +1215,7 @@ void virtio_reset(void *opaque)
k->reset(vdev);
}
vdev->start_on_kick = (virtio_host_has_feature(vdev, VIRTIO_F_VERSION_1) &&
!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1));
vdev->start_on_kick = false;
vdev->started = false;
vdev->broken = false;
vdev->guest_features = 0;
@ -1536,8 +1536,7 @@ static bool virtio_queue_notify_aio_vq(VirtQueue *vq)
ret = vq->handle_aio_output(vdev, vq);
if (unlikely(vdev->start_on_kick)) {
vdev->started = true;
vdev->start_on_kick = false;
virtio_set_started(vdev, true);
}
}
@ -1557,8 +1556,7 @@ static void virtio_queue_notify_vq(VirtQueue *vq)
vq->handle_output(vdev, vq);
if (unlikely(vdev->start_on_kick)) {
vdev->started = true;
vdev->start_on_kick = false;
virtio_set_started(vdev, true);
}
}
}
@ -1576,11 +1574,10 @@ void virtio_queue_notify(VirtIODevice *vdev, int n)
event_notifier_set(&vq->host_notifier);
} else if (vq->handle_output) {
vq->handle_output(vdev, vq);
}
if (unlikely(vdev->start_on_kick)) {
vdev->started = true;
vdev->start_on_kick = false;
if (unlikely(vdev->start_on_kick)) {
virtio_set_started(vdev, true);
}
}
}
@ -2069,14 +2066,21 @@ int virtio_set_features(VirtIODevice *vdev, uint64_t val)
return -EINVAL;
}
ret = virtio_set_features_nocheck(vdev, val);
if (!ret && virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) {
/* VIRTIO_RING_F_EVENT_IDX changes the size of the caches. */
int i;
for (i = 0; i < VIRTIO_QUEUE_MAX; i++) {
if (vdev->vq[i].vring.num != 0) {
virtio_init_region_cache(vdev, i);
if (!ret) {
if (virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) {
/* VIRTIO_RING_F_EVENT_IDX changes the size of the caches. */
int i;
for (i = 0; i < VIRTIO_QUEUE_MAX; i++) {
if (vdev->vq[i].vring.num != 0) {
virtio_init_region_cache(vdev, i);
}
}
}
if (!virtio_device_started(vdev, vdev->status) &&
!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) {
vdev->start_on_kick = true;
}
}
return ret;
}
@ -2228,6 +2232,11 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id)
}
}
if (!virtio_device_started(vdev, vdev->status) &&
!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) {
vdev->start_on_kick = true;
}
rcu_read_lock();
for (i = 0; i < num; i++) {
if (vdev->vq[i].vring.desc) {
@ -2291,7 +2300,7 @@ static void virtio_vmstate_change(void *opaque, int running, RunState state)
VirtIODevice *vdev = opaque;
BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
bool backend_run = running && vdev->started;
bool backend_run = running && virtio_device_started(vdev, vdev->status);
vdev->vm_running = running;
if (backend_run) {
@ -2330,8 +2339,7 @@ void virtio_init(VirtIODevice *vdev, const char *name,
g_malloc0(sizeof(*vdev->vector_queues) * nvectors);
}
vdev->start_on_kick = (virtio_host_has_feature(vdev, VIRTIO_F_VERSION_1) &&
!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1));
vdev->start_on_kick = false;
vdev->started = false;
vdev->device_id = device_id;
vdev->status = 0;
@ -2669,6 +2677,7 @@ static void virtio_device_instance_finalize(Object *obj)
static Property virtio_properties[] = {
DEFINE_VIRTIO_COMMON_FEATURES(VirtIODevice, host_features),
DEFINE_PROP_BOOL("use-started", VirtIODevice, use_started, true),
DEFINE_PROP_END_OF_LIST(),
};