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virtio,pci: features, cleanups

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vdpa:
       shadow vq vlan support
       net migration with cvq
 cxl:
      support emulating 4 HDM decoders
      serial number extended capability
 virtio:
       hared dma-buf
 
 Fixes, cleanups all over the place.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pci: features, cleanups

vdpa:
      shadow vq vlan support
      net migration with cvq
cxl:
     support emulating 4 HDM decoders
     serial number extended capability
virtio:
      hared dma-buf

Fixes, cleanups all over the place.

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

* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (53 commits)
  libvhost-user: handle shared_object msg
  vhost-user: add shared_object msg
  hw/display: introduce virtio-dmabuf
  util/uuid: add a hash function
  virtio: remove unused next argument from virtqueue_split_read_next_desc()
  virtio: remove unnecessary thread fence while reading next descriptor
  virtio: use shadow_avail_idx while checking number of heads
  libvhost-user.c: add assertion to vu_message_read_default
  pcie_sriov: unregister_vfs(): fix error path
  hw/i386/pc: improve physical address space bound check for 32-bit x86 systems
  amd_iommu: Fix APIC address check
  vdpa net: follow VirtIO initialization properly at cvq isolation probing
  vdpa net: stop probing if cannot set features
  vdpa net: fix error message setting virtio status
  hw/pci-bridge/cxl-upstream: Add serial number extended capability support
  hw/cxl: Support 4 HDM decoders at all levels of topology
  hw/cxl: Fix and use same calculation for HDM decoder block size everywhere
  hw/cxl: Add utility functions decoder interleave ways and target count.
  hw/cxl: Push cxl_decoder_count_enc() and cxl_decode_ig() into .c
  vdpa net: zero vhost_vdpa iova_tree pointer at cleanup
  ...

Conflicts:
  hw/core/machine.c
  Context conflict with commit 314e0a84cd ("hw/core: remove needless
  includes") because it removed an adjacent #include.
This commit is contained in:
Stefan Hajnoczi 2023-10-05 09:01:01 -04:00
commit 2f3913f4b2
71 changed files with 2025 additions and 450 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
MAINTAINERS
View File

@ -2154,6 +2154,13 @@ T: git https://gitlab.com/cohuck/qemu.git s390-next
T: git https://github.com/borntraeger/qemu.git s390-next
L: qemu-s390x@nongnu.org
virtio-dmabuf
M: Albert Esteve <aesteve@redhat.com>
S: Supported
F: hw/display/virtio-dmabuf.c
F: include/hw/virtio/virtio-dmabuf.h
F: tests/unit/test-virtio-dmabuf.c
virtiofs
M: Stefan Hajnoczi <stefanha@redhat.com>
S: Supported

57
docs/interop/vhost-user.rst
View File

@ -1440,6 +1440,18 @@ Front-end message types
query the back-end for its device status as defined in the Virtio
specification.
``VHOST_USER_GET_SHARED_OBJECT``
:id: 41
:equivalent ioctl: N/A
:request payload: ``struct VhostUserShared``
:reply payload: dmabuf fd
When the ``VHOST_USER_PROTOCOL_F_SHARED_OBJECT`` protocol
feature has been successfully negotiated, and the UUID is found
in the exporters cache, this message is submitted by the front-end
to retrieve a given dma-buf fd from a given back-end, determined by
the requested UUID. Back-end will reply passing the fd when the operation
is successful, or no fd otherwise.
Back-end message types
----------------------
@ -1528,6 +1540,51 @@ is sent by the front-end.
The state.num field is currently reserved and must be set to 0.
``VHOST_USER_BACKEND_SHARED_OBJECT_ADD``
:id: 6
:equivalent ioctl: N/A
:request payload: ``struct VhostUserShared``
:reply payload: N/A
When the ``VHOST_USER_PROTOCOL_F_SHARED_OBJECT`` protocol
feature has been successfully negotiated, this message can be submitted
by the backends to add themselves as exporters to the virtio shared lookup
table. The back-end device gets associated with a UUID in the shared table.
The back-end is responsible of keeping its own table with exported dma-buf fds.
When another back-end tries to import the resource associated with the UUID,
it will send a message to the front-end, which will act as a proxy to the
exporter back-end. If ``VHOST_USER_PROTOCOL_F_REPLY_ACK`` is negotiated, and
the back-end sets the ``VHOST_USER_NEED_REPLY`` flag, the front-end must
respond with zero when operation is successfully completed, or non-zero
otherwise.
``VHOST_USER_BACKEND_SHARED_OBJECT_REMOVE``
:id: 7
:equivalent ioctl: N/A
:request payload: ``struct VhostUserShared``
:reply payload: N/A
When the ``VHOST_USER_PROTOCOL_F_SHARED_OBJECT`` protocol
feature has been successfully negotiated, this message can be submitted
by the backend to remove themselves from to the virtio-dmabuf shared
table API. The shared table will remove the back-end device associated with
the UUID. If ``VHOST_USER_PROTOCOL_F_REPLY_ACK`` is negotiated, and the
back-end sets the ``VHOST_USER_NEED_REPLY`` flag, the front-end must respond
with zero when operation is successfully completed, or non-zero otherwise.
``VHOST_USER_BACKEND_SHARED_OBJECT_LOOKUP``
:id: 8
:equivalent ioctl: N/A
:request payload: ``struct VhostUserShared``
:reply payload: dmabuf fd and ``u64``
When the ``VHOST_USER_PROTOCOL_F_SHARED_OBJECT`` protocol
feature has been successfully negotiated, this message can be submitted
by the backends to retrieve a given dma-buf fd from the virtio-dmabuf
shared table given a UUID. Frontend will reply passing the fd and a zero
when the operation is successful, or non-zero otherwise. Note that if the
operation fails, no fd is sent to the backend.
.. _reply_ack:
VHOST_USER_PROTOCOL_F_REPLY_ACK

6
hw/acpi/acpi-x86-stub.c
View File

@ -1,12 +1,6 @@
#include "qemu/osdep.h"
#include "hw/i386/pc.h"
#include "hw/i386/acpi-build.h"
void pc_madt_cpu_entry(int uid, const CPUArchIdList *apic_ids,
GArray *entry, bool force_enabled)
{
}
Object *acpi_get_i386_pci_host(void)
{
return NULL;

9
hw/acpi/core.c
View File

@ -32,6 +32,7 @@
#include "qemu/module.h"
#include "qemu/option.h"
#include "sysemu/runstate.h"
#include "trace.h"
struct acpi_table_header {
uint16_t _length; /* our length, not actual part of the hdr */
@ -688,9 +689,11 @@ void acpi_gpe_ioport_writeb(ACPIREGS *ar, uint32_t addr, uint32_t val)
cur = acpi_gpe_ioport_get_ptr(ar, addr);
if (addr < ar->gpe.len / 2) {
trace_acpi_gpe_sts_ioport_writeb(addr, val);
/* GPE_STS */
*cur = (*cur) & ~val;
} else if (addr < ar->gpe.len) {
trace_acpi_gpe_en_ioport_writeb(addr - (ar->gpe.len / 2), val);
/* GPE_EN */
*cur = val;
} else {
@ -709,6 +712,12 @@ uint32_t acpi_gpe_ioport_readb(ACPIREGS *ar, uint32_t addr)
val = *cur;
}
if (addr < ar->gpe.len / 2) {
trace_acpi_gpe_sts_ioport_readb(addr, val);
} else {
trace_acpi_gpe_en_ioport_readb(addr - (ar->gpe.len / 2), val);
}
return val;
}

9
hw/acpi/cpu.c
View File

@ -1,6 +1,7 @@
#include "qemu/osdep.h"
#include "migration/vmstate.h"
#include "hw/acpi/cpu.h"
#include "hw/core/cpu.h"
#include "qapi/error.h"
#include "qapi/qapi-events-acpi.h"
#include "trace.h"
@ -338,7 +339,7 @@ const VMStateDescription vmstate_cpu_hotplug = {
#define CPU_FW_EJECT_EVENT "CEJF"
void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts,
hwaddr io_base,
build_madt_cpu_fn build_madt_cpu, hwaddr io_base,
const char *res_root,
const char *event_handler_method)
{
@ -353,8 +354,6 @@ void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts,
MachineClass *mc = MACHINE_GET_CLASS(machine);
const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine);
char *cphp_res_path = g_strdup_printf("%s." CPUHP_RES_DEVICE, res_root);
Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, NULL);
AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
cpu_ctrl_dev = aml_device("%s", cphp_res_path);
{
@ -664,9 +663,7 @@ void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts,
aml_append(dev, method);
/* build _MAT object */
assert(adevc && adevc->madt_cpu);
adevc->madt_cpu(i, arch_ids, madt_buf,
true); /* set enabled flag */
build_madt_cpu(i, arch_ids, madt_buf, true); /* set enabled flag */
aml_append(dev, aml_name_decl("_MAT",
aml_buffer(madt_buf->len, (uint8_t *)madt_buf->data)));
g_array_free(madt_buf, true);

1
hw/acpi/hmat.c
View File

@ -27,6 +27,7 @@
#include "qemu/osdep.h"
#include "qemu/units.h"
#include "sysemu/numa.h"
#include "hw/acpi/aml-build.h"
#include "hw/acpi/hmat.h"
/*

3
hw/acpi/hmat.h
View File

@ -27,7 +27,8 @@
#ifndef HMAT_H
#define HMAT_H
#include "hw/acpi/aml-build.h"
#include "hw/acpi/bios-linker-loader.h"
#include "sysemu/numa.h"
/*
* ACPI 6.3: 5.2.27.3 Memory Proximity Domain Attributes Structure,

1
hw/acpi/memory_hotplug.c
View File

@ -1,6 +1,7 @@
#include "qemu/osdep.h"
#include "hw/acpi/memory_hotplug.h"
#include "hw/mem/pc-dimm.h"
#include "hw/boards.h"
#include "hw/qdev-core.h"
#include "migration/vmstate.h"
#include "trace.h"

5
hw/acpi/piix4.c
View File

@ -20,7 +20,6 @@
*/
#include "qemu/osdep.h"
#include "hw/i386/pc.h"
#include "hw/irq.h"
#include "hw/isa/apm.h"
#include "hw/i2c/pm_smbus.h"
@ -43,7 +42,6 @@
#include "hw/acpi/acpi_dev_interface.h"
#include "migration/vmstate.h"
#include "hw/core/cpu.h"
#include "trace.h"
#include "qom/object.h"
#define GPE_BASE 0xafe0
@ -518,7 +516,6 @@ static uint64_t gpe_readb(void *opaque, hwaddr addr, unsigned width)
PIIX4PMState *s = opaque;
uint32_t val = acpi_gpe_ioport_readb(&s->ar, addr);
trace_piix4_gpe_readb(addr, width, val);
return val;
}
@ -527,7 +524,6 @@ static void gpe_writeb(void *opaque, hwaddr addr, uint64_t val,
{
PIIX4PMState *s = opaque;
trace_piix4_gpe_writeb(addr, width, val);
acpi_gpe_ioport_writeb(&s->ar, addr, val);
acpi_update_sci(&s->ar, s->irq);
}
@ -654,7 +650,6 @@ static void piix4_pm_class_init(ObjectClass *klass, void *data)
hc->is_hotpluggable_bus = piix4_is_hotpluggable_bus;
adevc->ospm_status = piix4_ospm_status;
adevc->send_event = piix4_send_gpe;
adevc->madt_cpu = pc_madt_cpu_entry;
}
static const TypeInfo piix4_pm_info = {

10
hw/acpi/trace-events
View File

@ -17,6 +17,12 @@ mhp_acpi_clear_remove_evt(uint32_t slot) "slot[0x%"PRIx32"] clear remove event"
mhp_acpi_pc_dimm_deleted(uint32_t slot) "slot[0x%"PRIx32"] pc-dimm deleted"
mhp_acpi_pc_dimm_delete_failed(uint32_t slot) "slot[0x%"PRIx32"] pc-dimm delete failed"
# core.c
acpi_gpe_en_ioport_readb(uint32_t addr, uint8_t val) "addr: 0x%" PRIx32 " ==> 0x%02" PRIx8
acpi_gpe_en_ioport_writeb(uint32_t addr, uint8_t val) "addr: 0x%" PRIx32 " <== 0x%02" PRIx8
acpi_gpe_sts_ioport_readb(uint32_t addr, uint8_t val) "addr: 0x%" PRIx32 " ==> 0x%02" PRIx8
acpi_gpe_sts_ioport_writeb(uint32_t addr, uint8_t val) "addr: 0x%" PRIx32 " <== 0x%02" PRIx8
# cpu.c
cpuhp_acpi_invalid_idx_selected(uint32_t idx) "0x%"PRIx32
cpuhp_acpi_read_flags(uint32_t idx, uint8_t flags) "idx[0x%"PRIx32"] flags: 0x%"PRIx8
@ -48,10 +54,6 @@ acpi_pci_sel_read(uint32_t val) "%" PRIu32
acpi_pci_ej_write(uint64_t addr, uint64_t data) "0x%" PRIx64 " <== %" PRIu64
acpi_pci_sel_write(uint64_t addr, uint64_t data) "0x%" PRIx64 " <== %" PRIu64
# piix4.c
piix4_gpe_readb(uint64_t addr, unsigned width, uint64_t val) "addr: 0x%" PRIx64 " width: %d ==> 0x%" PRIx64
piix4_gpe_writeb(uint64_t addr, unsigned width, uint64_t val) "addr: 0x%" PRIx64 " width: %d <== 0x%" PRIx64
# tco.c
tco_timer_reload(int ticks, int msec) "ticks=%d (%d ms)"
tco_timer_expired(int timeouts_no, bool strap, bool no_reboot) "timeouts_no=%d no_reboot=%d/%d"

5
hw/core/machine.c
View File

@ -24,6 +24,7 @@
#include "sysemu/runstate.h"
#include "sysemu/xen.h"
#include "sysemu/qtest.h"
#include "hw/pci/pci_bridge.h"
#include "hw/mem/nvdimm.h"
#include "migration/global_state.h"
#include "exec/confidential-guest-support.h"
@ -31,7 +32,9 @@
#include "hw/virtio/virtio-net.h"
#include "audio/audio.h"
GlobalProperty hw_compat_8_1[] = {};
GlobalProperty hw_compat_8_1[] = {
{ TYPE_PCI_BRIDGE, "x-pci-express-writeable-slt-bug", "true" },
};
const size_t hw_compat_8_1_len = G_N_ELEMENTS(hw_compat_8_1);
GlobalProperty hw_compat_8_0[] = {

92
hw/cxl/cxl-component-utils.c
View File

@ -13,6 +13,54 @@
#include "hw/pci/pci.h"
#include "hw/cxl/cxl.h"
/* CXL r3.0 Section 8.2.4.19.1 CXL HDM Decoder Capability Register */
int cxl_decoder_count_enc(int count)
{
switch (count) {
case 1: return 0x0;
case 2: return 0x1;
case 4: return 0x2;
case 6: return 0x3;
case 8: return 0x4;
case 10: return 0x5;
/* Switches and Host Bridges may have more than 10 decoders */
case 12: return 0x6;
case 14: return 0x7;
case 16: return 0x8;
case 20: return 0x9;
case 24: return 0xa;
case 28: return 0xb;
case 32: return 0xc;
}
return 0;
}
int cxl_decoder_count_dec(int enc_cnt)
{
switch (enc_cnt) {
case 0x0: return 1;
case 0x1: return 2;
case 0x2: return 4;
case 0x3: return 6;
case 0x4: return 8;
case 0x5: return 10;
/* Switches and Host Bridges may have more than 10 decoders */
case 0x6: return 12;
case 0x7: return 14;
case 0x8: return 16;
case 0x9: return 20;
case 0xa: return 24;
case 0xb: return 28;
case 0xc: return 32;
}
return 0;
}
hwaddr cxl_decode_ig(int ig)
{
return 1ULL << (ig + 8);
}
static uint64_t cxl_cache_mem_read_reg(void *opaque, hwaddr offset,
unsigned size)
{
@ -42,6 +90,9 @@ static void dumb_hdm_handler(CXLComponentState *cxl_cstate, hwaddr offset,
switch (offset) {
case A_CXL_HDM_DECODER0_CTRL:
case A_CXL_HDM_DECODER1_CTRL:
case A_CXL_HDM_DECODER2_CTRL:
case A_CXL_HDM_DECODER3_CTRL:
should_commit = FIELD_EX32(value, CXL_HDM_DECODER0_CTRL, COMMIT);
should_uncommit = !should_commit;
break;
@ -81,7 +132,7 @@ static void cxl_cache_mem_write_reg(void *opaque, hwaddr offset, uint64_t value,
}
if (offset >= A_CXL_HDM_DECODER_CAPABILITY &&
offset <= A_CXL_HDM_DECODER0_TARGET_LIST_HI) {
offset <= A_CXL_HDM_DECODER3_TARGET_LIST_HI) {
dumb_hdm_handler(cxl_cstate, offset, value);
} else {
cregs->cache_mem_registers[offset / sizeof(*cregs->cache_mem_registers)] = value;
@ -161,7 +212,8 @@ static void ras_init_common(uint32_t *reg_state, uint32_t *write_msk)
static void hdm_init_common(uint32_t *reg_state, uint32_t *write_msk,
enum reg_type type)
{
int decoder_count = 1;
int decoder_count = CXL_HDM_DECODER_COUNT;
int hdm_inc = R_CXL_HDM_DECODER1_BASE_LO - R_CXL_HDM_DECODER0_BASE_LO;
int i;
ARRAY_FIELD_DP32(reg_state, CXL_HDM_DECODER_CAPABILITY, DECODER_COUNT,
@ -174,19 +226,21 @@ static void hdm_init_common(uint32_t *reg_state, uint32_t *write_msk,
HDM_DECODER_ENABLE, 0);
write_msk[R_CXL_HDM_DECODER_GLOBAL_CONTROL] = 0x3;
for (i = 0; i < decoder_count; i++) {
write_msk[R_CXL_HDM_DECODER0_BASE_LO + i * 0x20] = 0xf0000000;
write_msk[R_CXL_HDM_DECODER0_BASE_HI + i * 0x20] = 0xffffffff;
write_msk[R_CXL_HDM_DECODER0_SIZE_LO + i * 0x20] = 0xf0000000;
write_msk[R_CXL_HDM_DECODER0_SIZE_HI + i * 0x20] = 0xffffffff;
write_msk[R_CXL_HDM_DECODER0_CTRL + i * 0x20] = 0x13ff;
write_msk[R_CXL_HDM_DECODER0_BASE_LO + i * hdm_inc] = 0xf0000000;
write_msk[R_CXL_HDM_DECODER0_BASE_HI + i * hdm_inc] = 0xffffffff;
write_msk[R_CXL_HDM_DECODER0_SIZE_LO + i * hdm_inc] = 0xf0000000;
write_msk[R_CXL_HDM_DECODER0_SIZE_HI + i * hdm_inc] = 0xffffffff;
write_msk[R_CXL_HDM_DECODER0_CTRL + i * hdm_inc] = 0x13ff;
if (type == CXL2_DEVICE ||
type == CXL2_TYPE3_DEVICE ||
type == CXL2_LOGICAL_DEVICE) {
write_msk[R_CXL_HDM_DECODER0_TARGET_LIST_LO + i * 0x20] = 0xf0000000;
write_msk[R_CXL_HDM_DECODER0_TARGET_LIST_LO + i * hdm_inc] =
0xf0000000;
} else {
write_msk[R_CXL_HDM_DECODER0_TARGET_LIST_LO + i * 0x20] = 0xffffffff;
write_msk[R_CXL_HDM_DECODER0_TARGET_LIST_LO + i * hdm_inc] =
0xffffffff;
}
write_msk[R_CXL_HDM_DECODER0_TARGET_LIST_HI + i * 0x20] = 0xffffffff;
write_msk[R_CXL_HDM_DECODER0_TARGET_LIST_HI + i * hdm_inc] = 0xffffffff;
}
}
@ -375,6 +429,7 @@ void cxl_component_create_dvsec(CXLComponentState *cxl,
cxl->dvsec_offset += length;
}
/* CXL r3.0 Section 8.2.4.19.7 CXL HDM Decoder n Control Register */
uint8_t cxl_interleave_ways_enc(int iw, Error **errp)
{
switch (iw) {
@ -392,6 +447,23 @@ uint8_t cxl_interleave_ways_enc(int iw, Error **errp)
}
}
int cxl_interleave_ways_dec(uint8_t iw_enc, Error **errp)
{
switch (iw_enc) {
case 0x0: return 1;
case 0x1: return 2;
case 0x2: return 4;
case 0x3: return 8;
case 0x4: return 16;
case 0x8: return 3;
case 0x9: return 6;
case 0xa: return 12;
default:
error_setg(errp, "Encoded interleave ways: %d not supported", iw_enc);
return 0;
}
}
uint8_t cxl_interleave_granularity_enc(uint64_t gran, Error **errp)
{
switch (gran) {

67
hw/cxl/cxl-host.c
View File

@ -97,33 +97,58 @@ void cxl_fmws_link_targets(CXLState *cxl_state, Error **errp)
}
}
/* TODO: support, multiple hdm decoders */
static bool cxl_hdm_find_target(uint32_t *cache_mem, hwaddr addr,
uint8_t *target)
{
uint32_t ctrl;
uint32_t ig_enc;
uint32_t iw_enc;
uint32_t target_idx;
int hdm_inc = R_CXL_HDM_DECODER1_BASE_LO - R_CXL_HDM_DECODER0_BASE_LO;
unsigned int hdm_count;
bool found = false;
int i;
uint32_t cap;
ctrl = cache_mem[R_CXL_HDM_DECODER0_CTRL];
if (!FIELD_EX32(ctrl, CXL_HDM_DECODER0_CTRL, COMMITTED)) {
return false;
cap = ldl_le_p(cache_mem + R_CXL_HDM_DECODER_CAPABILITY);
hdm_count = cxl_decoder_count_dec(FIELD_EX32(cap,
CXL_HDM_DECODER_CAPABILITY,
DECODER_COUNT));
for (i = 0; i < hdm_count; i++) {
uint32_t ctrl, ig_enc, iw_enc, target_idx;
uint32_t low, high;
uint64_t base, size;
low = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_BASE_LO + i * hdm_inc);
high = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_BASE_HI + i * hdm_inc);
base = (low & 0xf0000000) | ((uint64_t)high << 32);
low = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_SIZE_LO + i * hdm_inc);
high = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_SIZE_HI + i * hdm_inc);
size = (low & 0xf0000000) | ((uint64_t)high << 32);
if (addr < base || addr >= base + size) {
continue;
}
ctrl = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL + i * hdm_inc);
if (!FIELD_EX32(ctrl, CXL_HDM_DECODER0_CTRL, COMMITTED)) {
return false;
}
found = true;
ig_enc = FIELD_EX32(ctrl, CXL_HDM_DECODER0_CTRL, IG);
iw_enc = FIELD_EX32(ctrl, CXL_HDM_DECODER0_CTRL, IW);
target_idx = (addr / cxl_decode_ig(ig_enc)) % (1 << iw_enc);
if (target_idx < 4) {
uint32_t val = ldl_le_p(cache_mem +
R_CXL_HDM_DECODER0_TARGET_LIST_LO +
i * hdm_inc);
*target = extract32(val, target_idx * 8, 8);
} else {
uint32_t val = ldl_le_p(cache_mem +
R_CXL_HDM_DECODER0_TARGET_LIST_HI +
i * hdm_inc);
*target = extract32(val, (target_idx - 4) * 8, 8);
}
break;
}
ig_enc = FIELD_EX32(ctrl, CXL_HDM_DECODER0_CTRL, IG);
iw_enc = FIELD_EX32(ctrl, CXL_HDM_DECODER0_CTRL, IW);
target_idx = (addr / cxl_decode_ig(ig_enc)) % (1 << iw_enc);
if (target_idx < 4) {
*target = extract32(cache_mem[R_CXL_HDM_DECODER0_TARGET_LIST_LO],
target_idx * 8, 8);
} else {
*target = extract32(cache_mem[R_CXL_HDM_DECODER0_TARGET_LIST_HI],
(target_idx - 4) * 8, 8);
}
return true;
return found;
}
static PCIDevice *cxl_cfmws_find_device(CXLFixedWindow *fw, hwaddr addr)

1
hw/display/meson.build
View File

@ -37,6 +37,7 @@ system_ss.add(when: 'CONFIG_MACFB', if_true: files('macfb.c'))
system_ss.add(when: 'CONFIG_NEXTCUBE', if_true: files('next-fb.c'))
system_ss.add(when: 'CONFIG_VGA', if_true: files('vga.c'))
system_ss.add(when: 'CONFIG_VIRTIO', if_true: files('virtio-dmabuf.c'))
if (config_all_devices.has_key('CONFIG_VGA_CIRRUS') or
config_all_devices.has_key('CONFIG_VGA_PCI') or

138
hw/display/virtio-dmabuf.c Normal file
View File

@ -0,0 +1,138 @@
/*
* Virtio Shared dma-buf
*
* Copyright Red Hat, Inc. 2023
*
* Authors:
* Albert Esteve <aesteve@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 "qemu/osdep.h"
#include "hw/virtio/virtio-dmabuf.h"
static GMutex lock;
static GHashTable *resource_uuids;
/*
* uuid_equal_func: wrapper for UUID is_equal function to
* satisfy g_hash_table_new expected parameters signatures.
*/
static int uuid_equal_func(const void *lhv, const void *rhv)
{
return qemu_uuid_is_equal(lhv, rhv);
}
static bool virtio_add_resource(QemuUUID *uuid, VirtioSharedObject *value)
{
bool result = false;
g_mutex_lock(&lock);
if (resource_uuids == NULL) {
resource_uuids = g_hash_table_new_full(qemu_uuid_hash,
uuid_equal_func,
NULL,
g_free);
}
if (g_hash_table_lookup(resource_uuids, uuid) == NULL) {
result = g_hash_table_insert(resource_uuids, uuid, value);
}
g_mutex_unlock(&lock);
return result;
}
bool virtio_add_dmabuf(QemuUUID *uuid, int udmabuf_fd)
{
bool result;
VirtioSharedObject *vso;
if (udmabuf_fd < 0) {
return false;
}
vso = g_new(VirtioSharedObject, 1);
vso->type = TYPE_DMABUF;
vso->value = GINT_TO_POINTER(udmabuf_fd);
result = virtio_add_resource(uuid, vso);
return result;
}
bool virtio_add_vhost_device(QemuUUID *uuid, struct vhost_dev *dev)
{
bool result;
VirtioSharedObject *vso;
if (dev == NULL) {
return false;
}
vso = g_new(VirtioSharedObject, 1);
vso->type = TYPE_VHOST_DEV;
vso->value = dev;
result = virtio_add_resource(uuid, vso);
return result;
}
bool virtio_remove_resource(const QemuUUID *uuid)
{
bool result;
g_mutex_lock(&lock);
result = g_hash_table_remove(resource_uuids, uuid);
g_mutex_unlock(&lock);
return result;
}
static VirtioSharedObject *get_shared_object(const QemuUUID *uuid)
{
gpointer lookup_res = NULL;
g_mutex_lock(&lock);
if (resource_uuids != NULL) {
lookup_res = g_hash_table_lookup(resource_uuids, uuid);
}
g_mutex_unlock(&lock);
return (VirtioSharedObject *) lookup_res;
}
int virtio_lookup_dmabuf(const QemuUUID *uuid)
{
VirtioSharedObject *vso = get_shared_object(uuid);
if (vso == NULL) {
return -1;
}
assert(vso->type == TYPE_DMABUF);
return GPOINTER_TO_INT(vso->value);
}
struct vhost_dev *virtio_lookup_vhost_device(const QemuUUID *uuid)
{
VirtioSharedObject *vso = get_shared_object(uuid);
if (vso == NULL) {
return NULL;
}
assert(vso->type == TYPE_VHOST_DEV);
return (struct vhost_dev *) vso->value;
}
SharedObjectType virtio_object_type(const QemuUUID *uuid)
{
VirtioSharedObject *vso = get_shared_object(uuid);
if (vso == NULL) {
return TYPE_INVALID;
}
return vso->type;
}
void virtio_free_resources(void)
{
g_mutex_lock(&lock);
g_hash_table_destroy(resource_uuids);
/* Reference count shall be 0 after the implicit unref on destroy */
resource_uuids = NULL;
g_mutex_unlock(&lock);
}

13
hw/i386/acpi-build.c
View File

@ -1495,14 +1495,14 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
aml_append(crs,
aml_io(
AML_DECODE16,
ACPI_PORT_SMI_CMD,
ACPI_PORT_SMI_CMD,
pm->fadt.smi_cmd,
pm->fadt.smi_cmd,
1,
2)
);
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(dev, aml_operation_region("SMIR", AML_SYSTEM_IO,
aml_int(ACPI_PORT_SMI_CMD), 2));
aml_int(pm->fadt.smi_cmd), 2));
field = aml_field("SMIR", AML_BYTE_ACC, AML_NOLOCK,
AML_WRITE_AS_ZEROS);
aml_append(field, aml_named_field("SMIC", 8));
@ -1549,8 +1549,8 @@ build_dsdt(GArray *table_data, BIOSLinker *linker,
.smi_path = pm->smi_on_cpuhp ? "\\_SB.PCI0.SMI0.SMIC" : NULL,
.fw_unplugs_cpu = pm->smi_on_cpu_unplug,
};
build_cpus_aml(dsdt, machine, opts, pm->cpu_hp_io_base,
"\\_SB.PCI0", "\\_GPE._E02");
build_cpus_aml(dsdt, machine, opts, pc_madt_cpu_entry,
pm->cpu_hp_io_base, "\\_SB.PCI0", "\\_GPE._E02");
}
if (pcms->memhp_io_base && nr_mem) {
@ -2547,8 +2547,7 @@ void acpi_build(AcpiBuildTables *tables, MachineState *machine)
acpi_add_table(table_offsets, tables_blob);
acpi_build_madt(tables_blob, tables->linker, x86ms,
ACPI_DEVICE_IF(x86ms->acpi_dev), x86ms->oem_id,
x86ms->oem_table_id);
x86ms->oem_id, x86ms->oem_table_id);
#ifdef CONFIG_ACPI_ERST
{

5
hw/i386/acpi-common.c
View File

@ -94,14 +94,13 @@ build_xrupt_override(GArray *entry, uint8_t src, uint32_t gsi, uint16_t flags)
* 5.2.8 Multiple APIC Description Table
*/
void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
X86MachineState *x86ms, AcpiDeviceIf *adev,
X86MachineState *x86ms,
const char *oem_id, const char *oem_table_id)
{
int i;
bool x2apic_mode = false;
MachineClass *mc = MACHINE_GET_CLASS(x86ms);
const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(x86ms));
AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(adev);
AcpiTable table = { .sig = "APIC", .rev = 3, .oem_id = oem_id,
.oem_table_id = oem_table_id };
@ -111,7 +110,7 @@ void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
build_append_int_noprefix(table_data, 1 /* PCAT_COMPAT */, 4); /* Flags */
for (i = 0; i < apic_ids->len; i++) {
adevc->madt_cpu(i, apic_ids, table_data, false);
pc_madt_cpu_entry(i, apic_ids, table_data, false);
if (apic_ids->cpus[i].arch_id > 254) {
x2apic_mode = true;
}

3
hw/i386/acpi-common.h
View File

@ -1,7 +1,6 @@
#ifndef HW_I386_ACPI_COMMON_H
#define HW_I386_ACPI_COMMON_H
#include "hw/acpi/acpi_dev_interface.h"
#include "hw/acpi/bios-linker-loader.h"
#include "hw/i386/x86.h"
@ -9,7 +8,7 @@
#define ACPI_BUILD_IOAPIC_ID 0x0
void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
X86MachineState *x86ms, AcpiDeviceIf *adev,
X86MachineState *x86ms,
const char *oem_id, const char *oem_table_id);
#endif

3
hw/i386/acpi-microvm.c
View File

@ -214,8 +214,7 @@ static void acpi_build_microvm(AcpiBuildTables *tables,
acpi_add_table(table_offsets, tables_blob);
acpi_build_madt(tables_blob, tables->linker, X86_MACHINE(machine),
ACPI_DEVICE_IF(x86ms->acpi_dev), x86ms->oem_id,
x86ms->oem_table_id);
x86ms->oem_id, x86ms->oem_table_id);
#ifdef CONFIG_ACPI_ERST
{

9
hw/i386/amd_iommu.c
View File

@ -1246,13 +1246,8 @@ static int amdvi_int_remap_msi(AMDVIState *iommu,
return -AMDVI_IR_ERR;
}
if (origin->address & AMDVI_MSI_ADDR_HI_MASK) {
trace_amdvi_err("MSI address high 32 bits non-zero when "
"Interrupt Remapping enabled.");
return -AMDVI_IR_ERR;
}
if ((origin->address & AMDVI_MSI_ADDR_LO_MASK) != APIC_DEFAULT_ADDRESS) {
if (origin->address < AMDVI_INT_ADDR_FIRST ||
origin->address + sizeof(origin->data) > AMDVI_INT_ADDR_LAST + 1) {
trace_amdvi_err("MSI is not from IOAPIC.");
return -AMDVI_IR_ERR;
}

2
hw/i386/amd_iommu.h
View File

@ -210,8 +210,6 @@
#define AMDVI_INT_ADDR_FIRST 0xfee00000
#define AMDVI_INT_ADDR_LAST 0xfeefffff
#define AMDVI_INT_ADDR_SIZE (AMDVI_INT_ADDR_LAST - AMDVI_INT_ADDR_FIRST + 1)
#define AMDVI_MSI_ADDR_HI_MASK (0xffffffff00000000ULL)
#define AMDVI_MSI_ADDR_LO_MASK (0x00000000ffffffffULL)
/* SB IOAPIC is always on this device in AMD systems */
#define AMDVI_IOAPIC_SB_DEVID PCI_BUILD_BDF(0, PCI_DEVFN(0x14, 0))

36
hw/i386/generic_event_device_x86.c
View File

@ -1,36 +0,0 @@
/*
* x86 variant of the generic event device for hw reduced acpi
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2 or later, as published by the Free Software Foundation.
*/
#include "qemu/osdep.h"
#include "hw/acpi/generic_event_device.h"
#include "hw/i386/pc.h"
static void acpi_ged_x86_class_init(ObjectClass *class, void *data)
{
AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_CLASS(class);
adevc->madt_cpu = pc_madt_cpu_entry;
}
static const TypeInfo acpi_ged_x86_info = {
.name = TYPE_ACPI_GED_X86,
.parent = TYPE_ACPI_GED,
.class_init = acpi_ged_x86_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_HOTPLUG_HANDLER },
{ TYPE_ACPI_DEVICE_IF },
{ }
}
};
static void acpi_ged_x86_register_types(void)
{
type_register_static(&acpi_ged_x86_info);
}
type_init(acpi_ged_x86_register_types)

1
hw/i386/meson.build
View File

@ -20,7 +20,6 @@ i386_ss.add(when: 'CONFIG_SGX', if_true: files('sgx-epc.c','sgx.c'),
if_false: files('sgx-stub.c'))
i386_ss.add(when: 'CONFIG_ACPI', if_true: files('acpi-common.c'))
i386_ss.add(when: 'CONFIG_ACPI_HW_REDUCED', if_true: files('generic_event_device_x86.c'))
i386_ss.add(when: 'CONFIG_PC', if_true: files(
'pc.c',
'pc_sysfw.c',

2
hw/i386/microvm.c
View File

@ -204,7 +204,7 @@ static void microvm_devices_init(MicrovmMachineState *mms)
/* Optional and legacy devices */
if (x86_machine_is_acpi_enabled(x86ms)) {
DeviceState *dev = qdev_new(TYPE_ACPI_GED_X86);
DeviceState *dev = qdev_new(TYPE_ACPI_GED);
qdev_prop_set_uint32(dev, "ged-event", ACPI_GED_PWR_DOWN_EVT);
sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, GED_MMIO_BASE);
/* sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, GED_MMIO_BASE_MEMHP); */

32
hw/i386/pc.c
View File

@ -814,13 +814,39 @@ static uint64_t pc_get_cxl_range_end(PCMachineState *pcms)
static hwaddr pc_max_used_gpa(PCMachineState *pcms, uint64_t pci_hole64_size)
{
X86CPU *cpu = X86_CPU(first_cpu);
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
MachineState *ms = MACHINE(pcms);
/* 32-bit systems don't have hole64 thus return max CPU address */
if (cpu->phys_bits <= 32) {
if (cpu->env.features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM) {
/* 64-bit systems */
return pc_pci_hole64_start() + pci_hole64_size - 1;
}
/* 32-bit systems */
if (pcmc->broken_32bit_mem_addr_check) {
/* old value for compatibility reasons */
return ((hwaddr)1 << cpu->phys_bits) - 1;
}
return pc_pci_hole64_start() + pci_hole64_size - 1;
/*
* 32-bit systems don't have hole64 but they might have a region for
* memory devices. Even if additional hotplugged memory devices might
* not be usable by most guest OSes, we need to still consider them for
* calculating the highest possible GPA so that we can properly report
* if someone configures them on a CPU that cannot possibly address them.
*/
if (pcmc->has_reserved_memory &&
(ms->ram_size < ms->maxram_size)) {
hwaddr devmem_start;
ram_addr_t devmem_size;
pc_get_device_memory_range(pcms, &devmem_start, &devmem_size);
devmem_start += devmem_size;
return devmem_start - 1;
}
/* configuration without any memory hotplug */
return pc_above_4g_end(pcms) - 1;
}
/*

4
hw/i386/pc_piix.c
View File

@ -496,9 +496,13 @@ DEFINE_I440FX_MACHINE(v8_2, "pc-i440fx-8.2", NULL,
static void pc_i440fx_8_1_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_i440fx_8_2_machine_options(m);
m->alias = NULL;
m->is_default = false;
pcmc->broken_32bit_mem_addr_check = true;
compat_props_add(m->compat_props, hw_compat_8_1, hw_compat_8_1_len);
compat_props_add(m->compat_props, pc_compat_8_1, pc_compat_8_1_len);
}

2
hw/i386/pc_q35.c
View File

@ -394,8 +394,10 @@ DEFINE_Q35_MACHINE(v8_2, "pc-q35-8.2", NULL,
static void pc_q35_8_1_machine_options(MachineClass *m)
{
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_q35_8_2_machine_options(m);
m->alias = NULL;
pcmc->broken_32bit_mem_addr_check = true;
compat_props_add(m->compat_props, hw_compat_8_1, hw_compat_8_1_len);
compat_props_add(m->compat_props, pc_compat_8_1, pc_compat_8_1_len);
}

16
hw/isa/lpc_ich9.c
View File

@ -304,6 +304,21 @@ static PCIINTxRoute ich9_route_intx_pin_to_irq(void *opaque, int pirq_pin)
route.irq = -1;
}
} else {
/*
* Strictly speaking, this is wrong. The PIRQ should be routed
* to *both* the I/O APIC and the PIC, on different pins. The
* I/O APIC has a fixed mapping to IRQ16-23, while the PIC is
* routed according to the PIRQx_ROUT configuration. But QEMU
* doesn't (yet) cope with the concept of pin numbers differing
* between PIC and I/O APIC, and neither does the in-kernel KVM
* irqchip support. So we route to the I/O APIC *only* if the
* routing to the PIC is disabled in the PIRQx_ROUT settings.
*
* This seems to work even if we boot a Linux guest with 'noapic'
* to make it use the legacy PIC, and then kexec directly into a
* new kernel which uses the I/O APIC. The new kernel explicitly
* disables the PIRQ routing even though it doesn't need to care.
*/
route.irq = ich9_pirq_to_gsi(pirq_pin);
}
@ -876,7 +891,6 @@ static void ich9_lpc_class_init(ObjectClass *klass, void *data)
hc->is_hotpluggable_bus = ich9_pm_is_hotpluggable_bus;
adevc->ospm_status = ich9_pm_ospm_status;
adevc->send_event = ich9_send_gpe;
adevc->madt_cpu = pc_madt_cpu_entry;
amldevc->build_dev_aml = build_ich9_isa_aml;
}

106
hw/mem/cxl_type3.c
View File

@ -388,34 +388,32 @@ static void build_dvsecs(CXLType3Dev *ct3d)
static void hdm_decoder_commit(CXLType3Dev *ct3d, int which)
{
int hdm_inc = R_CXL_HDM_DECODER1_BASE_LO - R_CXL_HDM_DECODER0_BASE_LO;
ComponentRegisters *cregs = &ct3d->cxl_cstate.crb;
uint32_t *cache_mem = cregs->cache_mem_registers;
uint32_t ctrl;
assert(which == 0);
ctrl = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL);
ctrl = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL + which * hdm_inc);
/* TODO: Sanity checks that the decoder is possible */
ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, ERR, 0);
ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, COMMITTED, 1);
stl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL, ctrl);
stl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL + which * hdm_inc, ctrl);
}
static void hdm_decoder_uncommit(CXLType3Dev *ct3d, int which)
{
int hdm_inc = R_CXL_HDM_DECODER1_BASE_LO - R_CXL_HDM_DECODER0_BASE_LO;
ComponentRegisters *cregs = &ct3d->cxl_cstate.crb;
uint32_t *cache_mem = cregs->cache_mem_registers;
uint32_t ctrl;
assert(which == 0);
ctrl = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL);
ctrl = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL + which * hdm_inc);
ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, ERR, 0);
ctrl = FIELD_DP32(ctrl, CXL_HDM_DECODER0_CTRL, COMMITTED, 0);
stl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL, ctrl);
stl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL + which * hdm_inc, ctrl);
}
static int ct3d_qmp_uncor_err_to_cxl(CxlUncorErrorType qmp_err)
@ -498,6 +496,21 @@ static void ct3d_reg_write(void *opaque, hwaddr offset, uint64_t value,
should_uncommit = !should_commit;
which_hdm = 0;
break;
case A_CXL_HDM_DECODER1_CTRL:
should_commit = FIELD_EX32(value, CXL_HDM_DECODER0_CTRL, COMMIT);
should_uncommit = !should_commit;
which_hdm = 1;
break;
case A_CXL_HDM_DECODER2_CTRL:
should_commit = FIELD_EX32(value, CXL_HDM_DECODER0_CTRL, COMMIT);
should_uncommit = !should_commit;
which_hdm = 2;
break;
case A_CXL_HDM_DECODER3_CTRL:
should_commit = FIELD_EX32(value, CXL_HDM_DECODER0_CTRL, COMMIT);
should_uncommit = !should_commit;
which_hdm = 3;
break;
case A_CXL_RAS_UNC_ERR_STATUS:
{
uint32_t capctrl = ldl_le_p(cache_mem + R_CXL_RAS_ERR_CAP_CTRL);
@ -769,36 +782,63 @@ static void ct3_exit(PCIDevice *pci_dev)
}
}
/* TODO: Support multiple HDM decoders and DPA skip */
static bool cxl_type3_dpa(CXLType3Dev *ct3d, hwaddr host_addr, uint64_t *dpa)
{
int hdm_inc = R_CXL_HDM_DECODER1_BASE_LO - R_CXL_HDM_DECODER0_BASE_LO;
uint32_t *cache_mem = ct3d->cxl_cstate.crb.cache_mem_registers;
uint64_t decoder_base, decoder_size, hpa_offset;
uint32_t hdm0_ctrl;
int ig, iw;
unsigned int hdm_count;
uint32_t cap;
uint64_t dpa_base = 0;
int i;
decoder_base = (((uint64_t)cache_mem[R_CXL_HDM_DECODER0_BASE_HI] << 32) |
cache_mem[R_CXL_HDM_DECODER0_BASE_LO]);
if ((uint64_t)host_addr < decoder_base) {
return false;
cap = ldl_le_p(cache_mem + R_CXL_HDM_DECODER_CAPABILITY);
hdm_count = cxl_decoder_count_dec(FIELD_EX32(cap,
CXL_HDM_DECODER_CAPABILITY,
DECODER_COUNT));
for (i = 0; i < hdm_count; i++) {
uint64_t decoder_base, decoder_size, hpa_offset, skip;
uint32_t hdm_ctrl, low, high;
int ig, iw;
low = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_BASE_LO + i * hdm_inc);
high = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_BASE_HI + i * hdm_inc);
decoder_base = ((uint64_t)high << 32) | (low & 0xf0000000);
low = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_SIZE_LO + i * hdm_inc);
high = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_SIZE_HI + i * hdm_inc);
decoder_size = ((uint64_t)high << 32) | (low & 0xf0000000);
low = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_DPA_SKIP_LO +
i * hdm_inc);
high = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_DPA_SKIP_HI +
i * hdm_inc);
skip = ((uint64_t)high << 32) | (low & 0xf0000000);
dpa_base += skip;
hpa_offset = (uint64_t)host_addr - decoder_base;
hdm_ctrl = ldl_le_p(cache_mem + R_CXL_HDM_DECODER0_CTRL + i * hdm_inc);
iw = FIELD_EX32(hdm_ctrl, CXL_HDM_DECODER0_CTRL, IW);
ig = FIELD_EX32(hdm_ctrl, CXL_HDM_DECODER0_CTRL, IG);
if (!FIELD_EX32(hdm_ctrl, CXL_HDM_DECODER0_CTRL, COMMITTED)) {
return false;
}
if (((uint64_t)host_addr < decoder_base) ||
(hpa_offset >= decoder_size)) {
dpa_base += decoder_size /
cxl_interleave_ways_dec(iw, &error_fatal);
continue;
}
*dpa = dpa_base +
((MAKE_64BIT_MASK(0, 8 + ig) & hpa_offset) |
((MAKE_64BIT_MASK(8 + ig + iw, 64 - 8 - ig - iw) & hpa_offset)
>> iw));
return true;
}
hpa_offset = (uint64_t)host_addr - decoder_base;
decoder_size = ((uint64_t)cache_mem[R_CXL_HDM_DECODER0_SIZE_HI] << 32) |
cache_mem[R_CXL_HDM_DECODER0_SIZE_LO];
if (hpa_offset >= decoder_size) {
return false;
}
hdm0_ctrl = cache_mem[R_CXL_HDM_DECODER0_CTRL];
iw = FIELD_EX32(hdm0_ctrl, CXL_HDM_DECODER0_CTRL, IW);
ig = FIELD_EX32(hdm0_ctrl, CXL_HDM_DECODER0_CTRL, IG);
*dpa = (MAKE_64BIT_MASK(0, 8 + ig) & hpa_offset) |
((MAKE_64BIT_MASK(8 + ig + iw, 64 - 8 - ig - iw) & hpa_offset) >> iw);
return true;
return false;
}
static int cxl_type3_hpa_to_as_and_dpa(CXLType3Dev *ct3d,

6
hw/net/virtio-net.c
View File

@ -49,8 +49,6 @@
#define VIRTIO_NET_VM_VERSION 11
#define MAX_VLAN (1 << 12) /* Per 802.1Q definition */
/* previously fixed value */
#define VIRTIO_NET_RX_QUEUE_DEFAULT_SIZE 256
#define VIRTIO_NET_TX_QUEUE_DEFAULT_SIZE 256
@ -1029,9 +1027,7 @@ static void virtio_net_set_features(VirtIODevice *vdev, uint64_t features)
vhost_net_save_acked_features(nc->peer);
}
if (virtio_has_feature(features, VIRTIO_NET_F_CTRL_VLAN)) {
memset(n->vlans, 0, MAX_VLAN >> 3);
} else {
if (!virtio_has_feature(features, VIRTIO_NET_F_CTRL_VLAN)) {
memset(n->vlans, 0xff, MAX_VLAN >> 3);
}

15
hw/pci-bridge/cxl_upstream.c
View File

@ -14,14 +14,21 @@
#include "hw/pci/msi.h"
#include "hw/pci/pcie.h"
#include "hw/pci/pcie_port.h"
/*
* Null value of all Fs suggested by IEEE RA guidelines for use of
* EU, OUI and CID
*/
#define UI64_NULL (~0ULL)
#define CXL_UPSTREAM_PORT_MSI_NR_VECTOR 2
#define CXL_UPSTREAM_PORT_MSI_OFFSET 0x70
#define CXL_UPSTREAM_PORT_PCIE_CAP_OFFSET 0x90
#define CXL_UPSTREAM_PORT_AER_OFFSET 0x100
#define CXL_UPSTREAM_PORT_DVSEC_OFFSET \
#define CXL_UPSTREAM_PORT_SN_OFFSET \
(CXL_UPSTREAM_PORT_AER_OFFSET + PCI_ERR_SIZEOF)
#define CXL_UPSTREAM_PORT_DVSEC_OFFSET \
(CXL_UPSTREAM_PORT_SN_OFFSET + PCI_EXT_CAP_DSN_SIZEOF)
typedef struct CXLUpstreamPort {
/*< private >*/
@ -30,6 +37,7 @@ typedef struct CXLUpstreamPort {
/*< public >*/
CXLComponentState cxl_cstate;
DOECap doe_cdat;
uint64_t sn;
} CXLUpstreamPort;
CXLComponentState *cxl_usp_to_cstate(CXLUpstreamPort *usp)
@ -326,7 +334,9 @@ static void cxl_usp_realize(PCIDevice *d, Error **errp)
if (rc) {
goto err_cap;
}
if (usp->sn != UI64_NULL) {
pcie_dev_ser_num_init(d, CXL_UPSTREAM_PORT_SN_OFFSET, usp->sn);
}
cxl_cstate->dvsec_offset = CXL_UPSTREAM_PORT_DVSEC_OFFSET;
cxl_cstate->pdev = d;
build_dvsecs(cxl_cstate);
@ -366,6 +376,7 @@ static void cxl_usp_exitfn(PCIDevice *d)
}
static Property cxl_upstream_props[] = {
DEFINE_PROP_UINT64("sn", CXLUpstreamPort, sn, UI64_NULL),
DEFINE_PROP_STRING("cdat", CXLUpstreamPort, cxl_cstate.cdat.filename),
DEFINE_PROP_END_OF_LIST()
};

2
hw/pci/pci.c
View File

@ -893,7 +893,7 @@ static void pci_init_w1cmask(PCIDevice *dev)
static void pci_init_mask_bridge(PCIDevice *d)
{
/* PCI_PRIMARY_BUS, PCI_SECONDARY_BUS, PCI_SUBORDINATE_BUS and
PCI_SEC_LETENCY_TIMER */
PCI_SEC_LATENCY_TIMER */
memset(d->wmask + PCI_PRIMARY_BUS, 0xff, 4);
/* base and limit */

14
hw/pci/pci_bridge.c
View File

@ -38,6 +38,7 @@
#include "qapi/error.h"
#include "hw/acpi/acpi_aml_interface.h"
#include "hw/acpi/pci.h"
#include "hw/qdev-properties.h"
/* PCI bridge subsystem vendor ID helper functions */
#define PCI_SSVID_SIZEOF 8
@ -385,6 +386,11 @@ void pci_bridge_initfn(PCIDevice *dev, const char *typename)
pci_bridge_region_init(br);
QLIST_INIT(&sec_bus->child);
QLIST_INSERT_HEAD(&parent->child, sec_bus, sibling);
/* For express secondary buses, secondary latency timer is RO 0 */
if (pci_bus_is_express(sec_bus) && !br->pcie_writeable_slt_bug) {
dev->wmask[PCI_SEC_LATENCY_TIMER] = 0;
}
}
/* default qdev clean up function for PCI-to-PCI bridge */
@ -466,10 +472,18 @@ int pci_bridge_qemu_reserve_cap_init(PCIDevice *dev, int cap_offset,
return 0;
}
static Property pci_bridge_properties[] = {
DEFINE_PROP_BOOL("x-pci-express-writeable-slt-bug", PCIBridge,
pcie_writeable_slt_bug, false),
DEFINE_PROP_END_OF_LIST(),
};
static void pci_bridge_class_init(ObjectClass *klass, void *data)
{
AcpiDevAmlIfClass *adevc = ACPI_DEV_AML_IF_CLASS(klass);
DeviceClass *k = DEVICE_CLASS(klass);
device_class_set_props(k, pci_bridge_properties);
adevc->build_dev_aml = build_pci_bridge_aml;
}

9
hw/pci/pcie_sriov.c
View File

@ -196,19 +196,16 @@ static void register_vfs(PCIDevice *dev)
static void unregister_vfs(PCIDevice *dev)
{
Error *local_err = NULL;
uint16_t num_vfs = dev->exp.sriov_pf.num_vfs;
uint16_t i;
trace_sriov_unregister_vfs(dev->name, PCI_SLOT(dev->devfn),
PCI_FUNC(dev->devfn), num_vfs);
for (i = 0; i < num_vfs; i++) {
Error *err = NULL;
PCIDevice *vf = dev->exp.sriov_pf.vf[i];
object_property_set_bool(OBJECT(vf), "realized", false, &local_err);
if (local_err) {
fprintf(stderr, "Failed to unplug: %s\n",
error_get_pretty(local_err));
error_free(local_err);
if (!object_property_set_bool(OBJECT(vf), "realized", false, &err)) {
error_reportf_err(err, "Failed to unplug: ");
}
object_unparent(OBJECT(vf));
object_unref(OBJECT(vf));

4
hw/scsi/vhost-user-scsi.c
View File

@ -39,10 +39,6 @@ static const int user_feature_bits[] = {
VHOST_INVALID_FEATURE_BIT
};
enum VhostUserProtocolFeature {
VHOST_USER_PROTOCOL_F_RESET_DEVICE = 13,
};
static void vhost_user_scsi_set_status(VirtIODevice *vdev, uint8_t status)
{
VHostUserSCSI *s = (VHostUserSCSI *)vdev;

28
hw/virtio/meson.build
View File

@ -1,27 +1,31 @@
softmmu_virtio_ss = ss.source_set()
softmmu_virtio_ss.add(files('virtio-bus.c'))
softmmu_virtio_ss.add(when: 'CONFIG_VIRTIO_PCI', if_true: files('virtio-pci.c'))
softmmu_virtio_ss.add(when: 'CONFIG_VIRTIO_MMIO', if_true: files('virtio-mmio.c'))
softmmu_virtio_ss.add(when: 'CONFIG_VIRTIO_CRYPTO', if_true: files('virtio-crypto.c'))
softmmu_virtio_ss.add(when: 'CONFIG_VHOST_VSOCK_COMMON', if_true: files('vhost-vsock-common.c'))
softmmu_virtio_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true: files('virtio-iommu.c'))
softmmu_virtio_ss.add(when: 'CONFIG_VHOST_VDPA_DEV', if_true: files('vdpa-dev.c'))
system_virtio_ss = ss.source_set()
system_virtio_ss.add(files('virtio-bus.c'))
system_virtio_ss.add(when: 'CONFIG_VIRTIO_PCI', if_true: files('virtio-pci.c'))
system_virtio_ss.add(when: 'CONFIG_VIRTIO_MMIO', if_true: files('virtio-mmio.c'))
system_virtio_ss.add(when: 'CONFIG_VIRTIO_CRYPTO', if_true: files('virtio-crypto.c'))
system_virtio_ss.add(when: 'CONFIG_VHOST_VSOCK_COMMON', if_true: files('vhost-vsock-common.c'))
system_virtio_ss.add(when: 'CONFIG_VIRTIO_IOMMU', if_true: files('virtio-iommu.c'))
system_virtio_ss.add(when: 'CONFIG_VHOST_VDPA_DEV', if_true: files('vdpa-dev.c'))
specific_virtio_ss = ss.source_set()
specific_virtio_ss.add(files('virtio.c'))
specific_virtio_ss.add(files('virtio-config-io.c', 'virtio-qmp.c'))
if have_vhost
softmmu_virtio_ss.add(files('vhost.c'))
system_virtio_ss.add(files('vhost.c'))
specific_virtio_ss.add(files('vhost-backend.c', 'vhost-iova-tree.c'))
if have_vhost_user
# fixme - this really should be generic
specific_virtio_ss.add(files('vhost-user.c'))
system_virtio_ss.add(files('vhost-user-device.c'))
system_virtio_ss.add(when: 'CONFIG_VIRTIO_PCI', if_true: files('vhost-user-device-pci.c'))
endif
if have_vhost_vdpa
specific_virtio_ss.add(files('vhost-vdpa.c', 'vhost-shadow-virtqueue.c'))
system_virtio_ss.add(files('vhost-vdpa.c'))
specific_virtio_ss.add(files('vhost-shadow-virtqueue.c'))
endif
else
softmmu_virtio_ss.add(files('vhost-stub.c'))
system_virtio_ss.add(files('vhost-stub.c'))
endif
specific_virtio_ss.add(when: 'CONFIG_VIRTIO_BALLOON', if_true: files('virtio-balloon.c'))
@ -67,7 +71,7 @@ virtio_pci_ss.add(when: 'CONFIG_VIRTIO_MD', if_true: files('virtio-md-pci.c'))
specific_virtio_ss.add_all(when: 'CONFIG_VIRTIO_PCI', if_true: virtio_pci_ss)
system_ss.add_all(when: 'CONFIG_VIRTIO', if_true: softmmu_virtio_ss)
system_ss.add_all(when: 'CONFIG_VIRTIO', if_true: system_virtio_ss)
system_ss.add(when: 'CONFIG_VIRTIO', if_false: files('vhost-stub.c'))
system_ss.add(when: 'CONFIG_VIRTIO', if_false: files('virtio-stub.c'))
system_ss.add(when: 'CONFIG_ALL', if_true: files('vhost-stub.c'))

2
hw/virtio/trace-events
View File

@ -48,7 +48,7 @@ vhost_vdpa_set_features(void *dev, uint64_t features) "dev: %p features: 0x%"PRI
vhost_vdpa_get_device_id(void *dev, uint32_t device_id) "dev: %p device_id %"PRIu32
vhost_vdpa_reset_device(void *dev) "dev: %p"
vhost_vdpa_get_vq_index(void *dev, int idx, int vq_idx) "dev: %p idx: %d vq idx: %d"
vhost_vdpa_set_vring_ready(void *dev) "dev: %p"
vhost_vdpa_set_vring_ready(void *dev, unsigned i, int r) "dev: %p, idx: %u, r: %d"
vhost_vdpa_dump_config(void *dev, const char *line) "dev: %p %s"
vhost_vdpa_set_config(void *dev, uint32_t offset, uint32_t size, uint32_t flags) "dev: %p offset: %"PRIu32" size: %"PRIu32" flags: 0x%"PRIx32
vhost_vdpa_get_config(void *dev, void *config, uint32_t config_len) "dev: %p config: %p config_len: %"PRIu32

3
hw/virtio/vdpa-dev.c
View File

@ -255,6 +255,9 @@ static int vhost_vdpa_device_start(VirtIODevice *vdev, Error **errp)
error_setg_errno(errp, -ret, "Error starting vhost");
goto err_guest_notifiers;
}
for (i = 0; i < s->dev.nvqs; ++i) {
vhost_vdpa_set_vring_ready(&s->vdpa, i);
}
s->started = true;
/*

36
hw/virtio/vhost-shadow-virtqueue.c
View File

@ -514,29 +514,37 @@ static void vhost_svq_flush(VhostShadowVirtqueue *svq,
}
/**
* Poll the SVQ for one device used buffer.
* Poll the SVQ to wait for the device to use the specified number
* of elements and return the total length written by the device.
*
* This function race with main event loop SVQ polling, so extra
* synchronization is needed.
*
* Return the length written by the device.
* @svq: The svq
* @num: The number of elements that need to be used
*/
size_t vhost_svq_poll(VhostShadowVirtqueue *svq)
size_t vhost_svq_poll(VhostShadowVirtqueue *svq, size_t num)
{
int64_t start_us = g_get_monotonic_time();
uint32_t len = 0;
size_t len = 0;
uint32_t r;
do {
if (vhost_svq_more_used(svq)) {
break;
}
while (num--) {
int64_t start_us = g_get_monotonic_time();
if (unlikely(g_get_monotonic_time() - start_us > 10e6)) {
return 0;
}
} while (true);
do {
if (vhost_svq_more_used(svq)) {
break;
}
if (unlikely(g_get_monotonic_time() - start_us > 10e6)) {
return len;
}
} while (true);
vhost_svq_get_buf(svq, &r);
len += r;
}
vhost_svq_get_buf(svq, &len);
return len;
}

2
hw/virtio/vhost-shadow-virtqueue.h
View File

@ -119,7 +119,7 @@ void vhost_svq_push_elem(VhostShadowVirtqueue *svq,
int vhost_svq_add(VhostShadowVirtqueue *svq, const struct iovec *out_sg,
size_t out_num, const struct iovec *in_sg, size_t in_num,
VirtQueueElement *elem);
size_t vhost_svq_poll(VhostShadowVirtqueue *svq);
size_t vhost_svq_poll(VhostShadowVirtqueue *svq, size_t num);
void vhost_svq_set_svq_kick_fd(VhostShadowVirtqueue *svq, int svq_kick_fd);
void vhost_svq_set_svq_call_fd(VhostShadowVirtqueue *svq, int call_fd);

71
hw/virtio/vhost-user-device-pci.c Normal file
View File

@ -0,0 +1,71 @@
/*
* Vhost-user generic virtio device PCI glue
*
* Copyright (c) 2023 Linaro Ltd
* Author: Alex Bennée <alex.bennee@linaro.org>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "hw/qdev-properties.h"
#include "hw/virtio/vhost-user-device.h"
#include "hw/virtio/virtio-pci.h"
struct VHostUserDevicePCI {
VirtIOPCIProxy parent_obj;
VHostUserBase vub;
};
typedef struct VHostUserDevicePCI VHostUserDevicePCI;
#define TYPE_VHOST_USER_DEVICE_PCI "vhost-user-device-pci-base"
DECLARE_INSTANCE_CHECKER(VHostUserDevicePCI,
VHOST_USER_DEVICE_PCI,
TYPE_VHOST_USER_DEVICE_PCI)
static void vhost_user_device_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VHostUserDevicePCI *dev = VHOST_USER_DEVICE_PCI(vpci_dev);
DeviceState *vdev = DEVICE(&dev->vub);
vpci_dev->nvectors = 1;
qdev_realize(vdev, BUS(&vpci_dev->bus), errp);
}
static void vhost_user_device_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);
k->realize = vhost_user_device_pci_realize;
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
pcidev_k->device_id = 0; /* Set by virtio-pci based on virtio id */
pcidev_k->revision = 0x00;
pcidev_k->class_id = PCI_CLASS_COMMUNICATION_OTHER;
}
static void vhost_user_device_pci_instance_init(Object *obj)
{
VHostUserDevicePCI *dev = VHOST_USER_DEVICE_PCI(obj);
virtio_instance_init_common(obj, &dev->vub, sizeof(dev->vub),
TYPE_VHOST_USER_DEVICE);
}
static const VirtioPCIDeviceTypeInfo vhost_user_device_pci_info = {
.base_name = TYPE_VHOST_USER_DEVICE_PCI,
.non_transitional_name = "vhost-user-device-pci",
.instance_size = sizeof(VHostUserDevicePCI),
.instance_init = vhost_user_device_pci_instance_init,
.class_init = vhost_user_device_pci_class_init,
};
static void vhost_user_device_pci_register(void)
{
virtio_pci_types_register(&vhost_user_device_pci_info);
}
type_init(vhost_user_device_pci_register);

380
hw/virtio/vhost-user-device.c Normal file
View File

@ -0,0 +1,380 @@
/*
* Generic vhost-user stub. This can be used to connect to any
* vhost-user backend. All configuration details must be handled by
* the vhost-user daemon itself
*
* Copyright (c) 2023 Linaro Ltd
* Author: Alex Bennée <alex.bennee@linaro.org>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/qdev-properties.h"
#include "hw/virtio/virtio-bus.h"
#include "hw/virtio/vhost-user-device.h"
#include "qemu/error-report.h"
static void vub_start(VirtIODevice *vdev)
{
BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
VHostUserBase *vub = VHOST_USER_BASE(vdev);
int ret, i;
if (!k->set_guest_notifiers) {
error_report("binding does not support guest notifiers");
return;
}
ret = vhost_dev_enable_notifiers(&vub->vhost_dev, vdev);
if (ret < 0) {
error_report("Error enabling host notifiers: %d", -ret);
return;
}
ret = k->set_guest_notifiers(qbus->parent, vub->vhost_dev.nvqs, true);
if (ret < 0) {
error_report("Error binding guest notifier: %d", -ret);
goto err_host_notifiers;
}
vub->vhost_dev.acked_features = vdev->guest_features;
ret = vhost_dev_start(&vub->vhost_dev, vdev, true);
if (ret < 0) {
error_report("Error starting vhost-user-device: %d", -ret);
goto err_guest_notifiers;
}
/*
* guest_notifier_mask/pending not used yet, so just unmask
* everything here. virtio-pci will do the right thing by
* enabling/disabling irqfd.
*/
for (i = 0; i < vub->vhost_dev.nvqs; i++) {
vhost_virtqueue_mask(&vub->vhost_dev, vdev, i, false);
}
return;
err_guest_notifiers:
k->set_guest_notifiers(qbus->parent, vub->vhost_dev.nvqs, false);
err_host_notifiers:
vhost_dev_disable_notifiers(&vub->vhost_dev, vdev);
}
static void vub_stop(VirtIODevice *vdev)
{
VHostUserBase *vub = VHOST_USER_BASE(vdev);
BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
int ret;
if (!k->set_guest_notifiers) {
return;
}
vhost_dev_stop(&vub->vhost_dev, vdev, true);
ret = k->set_guest_notifiers(qbus->parent, vub->vhost_dev.nvqs, false);
if (ret < 0) {
error_report("vhost guest notifier cleanup failed: %d", ret);
return;
}
vhost_dev_disable_notifiers(&vub->vhost_dev, vdev);
}
static void vub_set_status(VirtIODevice *vdev, uint8_t status)
{
VHostUserBase *vub = VHOST_USER_BASE(vdev);
bool should_start = virtio_device_should_start(vdev, status);
if (vhost_dev_is_started(&vub->vhost_dev) == should_start) {
return;
}
if (should_start) {
vub_start(vdev);
} else {
vub_stop(vdev);
}
}
/*
* For an implementation where everything is delegated to the backend
* we don't do anything other than return the full feature set offered
* by the daemon (module the reserved feature bit).
*/
static uint64_t vub_get_features(VirtIODevice *vdev,
uint64_t requested_features, Error **errp)
{
VHostUserBase *vub = VHOST_USER_BASE(vdev);
/* This should be set when the vhost connection initialises */
g_assert(vub->vhost_dev.features);
return vub->vhost_dev.features & ~(1ULL << VHOST_USER_F_PROTOCOL_FEATURES);
}
/*
* To handle VirtIO config we need to know the size of the config
* space. We don't cache the config but re-fetch it from the guest
* every time in case something has changed.
*/
static void vub_get_config(VirtIODevice *vdev, uint8_t *config)
{
VHostUserBase *vub = VHOST_USER_BASE(vdev);
Error *local_err = NULL;
/*
* There will have been a warning during vhost_dev_init, but lets
* assert here as nothing will go right now.
*/
g_assert(vub->config_size && vub->vhost_user.supports_config == true);
if (vhost_dev_get_config(&vub->vhost_dev, config,
vub->config_size, &local_err)) {
error_report_err(local_err);
}
}
/*
* When the daemon signals an update to the config we just need to
* signal the guest as we re-read the config on demand above.
*/
static int vub_config_notifier(struct vhost_dev *dev)
{
virtio_notify_config(dev->vdev);
return 0;
}
const VhostDevConfigOps vub_config_ops = {
.vhost_dev_config_notifier = vub_config_notifier,
};
static void vub_handle_output(VirtIODevice *vdev, VirtQueue *vq)
{
/*
* Not normally called; it's the daemon that handles the queue;
* however virtio's cleanup path can call this.
*/
}
static void do_vhost_user_cleanup(VirtIODevice *vdev, VHostUserBase *vub)
{
vhost_user_cleanup(&vub->vhost_user);
for (int i = 0; i < vub->num_vqs; i++) {
VirtQueue *vq = g_ptr_array_index(vub->vqs, i);
virtio_delete_queue(vq);
}
virtio_cleanup(vdev);
}
static int vub_connect(DeviceState *dev)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VHostUserBase *vub = VHOST_USER_BASE(vdev);
struct vhost_dev *vhost_dev = &vub->vhost_dev;
if (vub->connected) {
return 0;
}
vub->connected = true;
/*
* If we support VHOST_USER_GET_CONFIG we must enable the notifier
* so we can ping the guest when it updates.
*/
if (vub->vhost_user.supports_config) {
vhost_dev_set_config_notifier(vhost_dev, &vub_config_ops);
}
/* restore vhost state */
if (virtio_device_started(vdev, vdev->status)) {
vub_start(vdev);
}
return 0;
}
static void vub_disconnect(DeviceState *dev)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VHostUserBase *vub = VHOST_USER_BASE(vdev);
if (!vub->connected) {
return;
}
vub->connected = false;
if (vhost_dev_is_started(&vub->vhost_dev)) {
vub_stop(vdev);
}
}
static void vub_event(void *opaque, QEMUChrEvent event)
{
DeviceState *dev = opaque;
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VHostUserBase *vub = VHOST_USER_BASE(vdev);
switch (event) {
case CHR_EVENT_OPENED:
if (vub_connect(dev) < 0) {
qemu_chr_fe_disconnect(&vub->chardev);
return;
}
break;
case CHR_EVENT_CLOSED:
vub_disconnect(dev);
break;
case CHR_EVENT_BREAK:
case CHR_EVENT_MUX_IN:
case CHR_EVENT_MUX_OUT:
/* Ignore */
break;
}
}
static void vub_device_realize(DeviceState *dev, Error **errp)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VHostUserBase *vub = VHOST_USER_BASE(dev);
int ret;
if (!vub->chardev.chr) {
error_setg(errp, "vhost-user-device: missing chardev");
return;
}
if (!vub->virtio_id) {
error_setg(errp, "vhost-user-device: need to define device id");
return;
}
if (!vub->num_vqs) {
vub->num_vqs = 1; /* reasonable default? */
}
/*
* We can't handle config requests unless we know the size of the
* config region, specialisations of the vhost-user-device will be
* able to set this.
*/
if (vub->config_size) {
vub->vhost_user.supports_config = true;
}
if (!vhost_user_init(&vub->vhost_user, &vub->chardev, errp)) {
return;
}
virtio_init(vdev, vub->virtio_id, vub->config_size);
/*
* Disable guest notifiers, by default all notifications will be via the
* asynchronous vhost-user socket.
*/
vdev->use_guest_notifier_mask = false;
/* Allocate queues */
vub->vqs = g_ptr_array_sized_new(vub->num_vqs);
for (int i = 0; i < vub->num_vqs; i++) {
g_ptr_array_add(vub->vqs,
virtio_add_queue(vdev, 4, vub_handle_output));
}
vub->vhost_dev.nvqs = vub->num_vqs;
vub->vhost_dev.vqs = g_new0(struct vhost_virtqueue, vub->vhost_dev.nvqs);
/* connect to backend */
ret = vhost_dev_init(&vub->vhost_dev, &vub->vhost_user,
VHOST_BACKEND_TYPE_USER, 0, errp);
if (ret < 0) {
do_vhost_user_cleanup(vdev, vub);
}
qemu_chr_fe_set_handlers(&vub->chardev, NULL, NULL, vub_event, NULL,
dev, NULL, true);
}
static void vub_device_unrealize(DeviceState *dev)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VHostUserBase *vub = VHOST_USER_BASE(dev);
struct vhost_virtqueue *vhost_vqs = vub->vhost_dev.vqs;
/* This will stop vhost backend if appropriate. */
vub_set_status(vdev, 0);
vhost_dev_cleanup(&vub->vhost_dev);
g_free(vhost_vqs);
do_vhost_user_cleanup(vdev, vub);
}
static void vub_class_init(ObjectClass *klass, void *data)
{
VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
vdc->realize = vub_device_realize;
vdc->unrealize = vub_device_unrealize;
vdc->get_features = vub_get_features;
vdc->get_config = vub_get_config;
vdc->set_status = vub_set_status;
}
static const TypeInfo vub_info = {
.name = TYPE_VHOST_USER_BASE,
.parent = TYPE_VIRTIO_DEVICE,
.instance_size = sizeof(VHostUserBase),
.class_init = vub_class_init,
.class_size = sizeof(VHostUserBaseClass),
.abstract = true
};
/*
* The following is a concrete implementation of the base class which
* allows the user to define the key parameters via the command line.
*/
static const VMStateDescription vud_vmstate = {
.name = "vhost-user-device",
.unmigratable = 1,
};
static Property vud_properties[] = {
DEFINE_PROP_CHR("chardev", VHostUserBase, chardev),
DEFINE_PROP_UINT16("virtio-id", VHostUserBase, virtio_id, 0),
DEFINE_PROP_UINT32("num_vqs", VHostUserBase, num_vqs, 1),
DEFINE_PROP_UINT32("config_size", VHostUserBase, config_size, 0),
DEFINE_PROP_END_OF_LIST(),
};
static void vud_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
device_class_set_props(dc, vud_properties);
dc->vmsd = &vud_vmstate;
set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
}
static const TypeInfo vud_info = {
.name = TYPE_VHOST_USER_DEVICE,
.parent = TYPE_VHOST_USER_BASE,
.instance_size = sizeof(VHostUserBase),
.class_init = vud_class_init,
.class_size = sizeof(VHostUserBaseClass),
};
static void vu_register_types(void)
{
type_register_static(&vub_info);
type_register_static(&vud_info);
}
type_init(vu_register_types)

7
hw/virtio/vhost-user-gpio.c
View File

@ -205,6 +205,12 @@ static void vu_gpio_guest_notifier_mask(VirtIODevice *vdev, int idx, bool mask)
vhost_virtqueue_mask(&gpio->vhost_dev, vdev, idx, mask);
}
static struct vhost_dev *vu_gpio_get_vhost(VirtIODevice *vdev)
{
VHostUserGPIO *gpio = VHOST_USER_GPIO(vdev);
return &gpio->vhost_dev;
}
static void do_vhost_user_cleanup(VirtIODevice *vdev, VHostUserGPIO *gpio)
{
virtio_delete_queue(gpio->command_vq);
@ -413,6 +419,7 @@ static void vu_gpio_class_init(ObjectClass *klass, void *data)
vdc->get_config = vu_gpio_get_config;
vdc->set_status = vu_gpio_set_status;
vdc->guest_notifier_mask = vu_gpio_guest_notifier_mask;
vdc->get_vhost = vu_gpio_get_vhost;
}
static const TypeInfo vu_gpio_info = {

188
hw/virtio/vhost-user.c
View File

@ -10,6 +10,7 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/virtio/virtio-dmabuf.h"
#include "hw/virtio/vhost.h"
#include "hw/virtio/virtio-crypto.h"
#include "hw/virtio/vhost-user.h"
@ -21,6 +22,7 @@
#include "sysemu/kvm.h"
#include "qemu/error-report.h"
#include "qemu/main-loop.h"
#include "qemu/uuid.h"
#include "qemu/sockets.h"
#include "sysemu/runstate.h"
#include "sysemu/cryptodev.h"
@ -56,27 +58,6 @@
*/
#define VHOST_USER_MAX_CONFIG_SIZE 256
enum VhostUserProtocolFeature {
VHOST_USER_PROTOCOL_F_MQ = 0,
VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1,
VHOST_USER_PROTOCOL_F_RARP = 2,
VHOST_USER_PROTOCOL_F_REPLY_ACK = 3,
VHOST_USER_PROTOCOL_F_NET_MTU = 4,
VHOST_USER_PROTOCOL_F_BACKEND_REQ = 5,
VHOST_USER_PROTOCOL_F_CROSS_ENDIAN = 6,
VHOST_USER_PROTOCOL_F_CRYPTO_SESSION = 7,
VHOST_USER_PROTOCOL_F_PAGEFAULT = 8,
VHOST_USER_PROTOCOL_F_CONFIG = 9,
VHOST_USER_PROTOCOL_F_BACKEND_SEND_FD = 10,
VHOST_USER_PROTOCOL_F_HOST_NOTIFIER = 11,
VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD = 12,
VHOST_USER_PROTOCOL_F_RESET_DEVICE = 13,
/* Feature 14 reserved for VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS. */
VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS = 15,
VHOST_USER_PROTOCOL_F_STATUS = 16,
VHOST_USER_PROTOCOL_F_MAX
};
#define VHOST_USER_PROTOCOL_FEATURE_MASK ((1 << VHOST_USER_PROTOCOL_F_MAX) - 1)
typedef enum VhostUserRequest {
@ -121,6 +102,7 @@ typedef enum VhostUserRequest {
VHOST_USER_REM_MEM_REG = 38,
VHOST_USER_SET_STATUS = 39,
VHOST_USER_GET_STATUS = 40,
VHOST_USER_GET_SHARED_OBJECT = 41,
VHOST_USER_MAX
} VhostUserRequest;
@ -129,6 +111,9 @@ typedef enum VhostUserBackendRequest {
VHOST_USER_BACKEND_IOTLB_MSG = 1,
VHOST_USER_BACKEND_CONFIG_CHANGE_MSG = 2,
VHOST_USER_BACKEND_VRING_HOST_NOTIFIER_MSG = 3,
VHOST_USER_BACKEND_SHARED_OBJECT_ADD = 6,
VHOST_USER_BACKEND_SHARED_OBJECT_REMOVE = 7,
VHOST_USER_BACKEND_SHARED_OBJECT_LOOKUP = 8,
VHOST_USER_BACKEND_MAX
} VhostUserBackendRequest;
@ -202,6 +187,10 @@ typedef struct VhostUserInflight {
uint16_t queue_size;
} VhostUserInflight;
typedef struct VhostUserShared {
unsigned char uuid[16];
} VhostUserShared;
typedef struct {
VhostUserRequest request;
@ -226,6 +215,7 @@ typedef union {
VhostUserCryptoSession session;
VhostUserVringArea area;
VhostUserInflight inflight;
VhostUserShared object;
} VhostUserPayload;
typedef struct VhostUserMsg {
@ -1601,6 +1591,139 @@ static int vhost_user_backend_handle_vring_host_notifier(struct vhost_dev *dev,
return 0;
}
static int
vhost_user_backend_handle_shared_object_add(struct vhost_dev *dev,
VhostUserShared *object)
{
QemuUUID uuid;
memcpy(uuid.data, object->uuid, sizeof(object->uuid));
return virtio_add_vhost_device(&uuid, dev);
}
static int
vhost_user_backend_handle_shared_object_remove(VhostUserShared *object)
{
QemuUUID uuid;
memcpy(uuid.data, object->uuid, sizeof(object->uuid));
return virtio_remove_resource(&uuid);
}
static bool vhost_user_send_resp(QIOChannel *ioc, VhostUserHeader *hdr,
VhostUserPayload *payload, Error **errp)
{
struct iovec iov[] = {
{ .iov_base = hdr, .iov_len = VHOST_USER_HDR_SIZE },
{ .iov_base = payload, .iov_len = hdr->size },
};
hdr->flags &= ~VHOST_USER_NEED_REPLY_MASK;
hdr->flags |= VHOST_USER_REPLY_MASK;
return !qio_channel_writev_all(ioc, iov, ARRAY_SIZE(iov), errp);
}
static bool
vhost_user_backend_send_dmabuf_fd(QIOChannel *ioc, VhostUserHeader *hdr,
VhostUserPayload *payload, Error **errp)
{
hdr->size = sizeof(payload->u64);
return vhost_user_send_resp(ioc, hdr, payload, errp);
}
int vhost_user_get_shared_object(struct vhost_dev *dev, unsigned char *uuid,
int *dmabuf_fd)
{
struct vhost_user *u = dev->opaque;
CharBackend *chr = u->user->chr;
int ret;
VhostUserMsg msg = {
.hdr.request = VHOST_USER_GET_SHARED_OBJECT,
.hdr.flags = VHOST_USER_VERSION,
};
memcpy(msg.payload.object.uuid, uuid, sizeof(msg.payload.object.uuid));
ret = vhost_user_write(dev, &msg, NULL, 0);
if (ret < 0) {
return ret;
}
ret = vhost_user_read(dev, &msg);
if (ret < 0) {
return ret;
}
if (msg.hdr.request != VHOST_USER_GET_SHARED_OBJECT) {
error_report("Received unexpected msg type. "
"Expected %d received %d",
VHOST_USER_GET_SHARED_OBJECT, msg.hdr.request);
return -EPROTO;
}
*dmabuf_fd = qemu_chr_fe_get_msgfd(chr);
if (*dmabuf_fd < 0) {
error_report("Failed to get dmabuf fd");
return -EIO;
}
return 0;
}
static int
vhost_user_backend_handle_shared_object_lookup(struct vhost_user *u,
QIOChannel *ioc,
VhostUserHeader *hdr,
VhostUserPayload *payload)
{
QemuUUID uuid;
CharBackend *chr = u->user->chr;
Error *local_err = NULL;
int dmabuf_fd = -1;
int fd_num = 0;
memcpy(uuid.data, payload->object.uuid, sizeof(payload->object.uuid));
payload->u64 = 0;
switch (virtio_object_type(&uuid)) {
case TYPE_DMABUF:
dmabuf_fd = virtio_lookup_dmabuf(&uuid);
break;
case TYPE_VHOST_DEV:
{
struct vhost_dev *dev = virtio_lookup_vhost_device(&uuid);
if (dev == NULL) {
payload->u64 = -EINVAL;
break;
}
int ret = vhost_user_get_shared_object(dev, uuid.data, &dmabuf_fd);
if (ret < 0) {
payload->u64 = ret;
}
break;
}
case TYPE_INVALID:
payload->u64 = -EINVAL;
break;
}
if (dmabuf_fd != -1) {
fd_num++;
}
if (qemu_chr_fe_set_msgfds(chr, &dmabuf_fd, fd_num) < 0) {
error_report("Failed to set msg fds.");
payload->u64 = -EINVAL;
}
if (!vhost_user_backend_send_dmabuf_fd(ioc, hdr, payload, &local_err)) {
error_report_err(local_err);
return -EINVAL;
}
return 0;
}
static void close_backend_channel(struct vhost_user *u)
{
g_source_destroy(u->backend_src);
@ -1658,6 +1781,16 @@ static gboolean backend_read(QIOChannel *ioc, GIOCondition condition,
ret = vhost_user_backend_handle_vring_host_notifier(dev, &payload.area,
fd ? fd[0] : -1);
break;
case VHOST_USER_BACKEND_SHARED_OBJECT_ADD:
ret = vhost_user_backend_handle_shared_object_add(dev, &payload.object);
break;
case VHOST_USER_BACKEND_SHARED_OBJECT_REMOVE:
ret = vhost_user_backend_handle_shared_object_remove(&payload.object);
break;
case VHOST_USER_BACKEND_SHARED_OBJECT_LOOKUP:
ret = vhost_user_backend_handle_shared_object_lookup(dev->opaque, ioc,
&hdr, &payload);
break;
default:
error_report("Received unexpected msg type: %d.", hdr.request);
ret = -EINVAL;
@ -1668,21 +1801,10 @@ static gboolean backend_read(QIOChannel *ioc, GIOCondition condition,
* directly in their request handlers.
*/
if (hdr.flags & VHOST_USER_NEED_REPLY_MASK) {
struct iovec iovec[2];
hdr.flags &= ~VHOST_USER_NEED_REPLY_MASK;
hdr.flags |= VHOST_USER_REPLY_MASK;
payload.u64 = !!ret;
hdr.size = sizeof(payload.u64);
iovec[0].iov_base = &hdr;
iovec[0].iov_len = VHOST_USER_HDR_SIZE;
iovec[1].iov_base = &payload;
iovec[1].iov_len = hdr.size;
if (qio_channel_writev_all(ioc, iovec, ARRAY_SIZE(iovec), &local_err)) {
if (!vhost_user_send_resp(ioc, &hdr, &payload, &local_err)) {
error_report_err(local_err);
goto err;
}

66
hw/virtio/vhost-vdpa.c
View File

@ -14,6 +14,7 @@
#include <linux/vfio.h>
#include <sys/eventfd.h>
#include <sys/ioctl.h>
#include "exec/target_page.h"
#include "hw/virtio/vhost.h"
#include "hw/virtio/vhost-backend.h"
#include "hw/virtio/virtio-net.h"
@ -23,7 +24,6 @@
#include "migration/blocker.h"
#include "qemu/cutils.h"
#include "qemu/main-loop.h"
#include "cpu.h"
#include "trace.h"
#include "qapi/error.h"
@ -31,18 +31,20 @@
* Return one past the end of the end of section. Be careful with uint64_t
* conversions!
*/
static Int128 vhost_vdpa_section_end(const MemoryRegionSection *section)
static Int128 vhost_vdpa_section_end(const MemoryRegionSection *section,
int page_mask)
{
Int128 llend = int128_make64(section->offset_within_address_space);
llend = int128_add(llend, section->size);
llend = int128_and(llend, int128_exts64(TARGET_PAGE_MASK));
llend = int128_and(llend, int128_exts64(page_mask));
return llend;
}
static bool vhost_vdpa_listener_skipped_section(MemoryRegionSection *section,
uint64_t iova_min,
uint64_t iova_max)
uint64_t iova_max,
int page_mask)
{
Int128 llend;
@ -68,7 +70,7 @@ static bool vhost_vdpa_listener_skipped_section(MemoryRegionSection *section,
*/
if (!memory_region_is_iommu(section->mr)) {
llend = vhost_vdpa_section_end(section);
llend = vhost_vdpa_section_end(section, page_mask);
if (int128_gt(llend, int128_make64(iova_max))) {
error_report("RAM section out of device range (max=0x%" PRIx64
", end addr=0x%" PRIx64 ")",
@ -311,9 +313,11 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener,
Int128 llend, llsize;
void *vaddr;
int ret;
int page_size = qemu_target_page_size();
int page_mask = -page_size;
if (vhost_vdpa_listener_skipped_section(section, v->iova_range.first,
v->iova_range.last)) {
v->iova_range.last, page_mask)) {
return;
}
if (memory_region_is_iommu(section->mr)) {
@ -321,16 +325,16 @@ static void vhost_vdpa_listener_region_add(MemoryListener *listener,
return;
}
if (unlikely((section->offset_within_address_space & ~TARGET_PAGE_MASK) !=
(section->offset_within_region & ~TARGET_PAGE_MASK))) {
if (unlikely((section->offset_within_address_space & ~page_mask) !=
(section->offset_within_region & ~page_mask))) {
trace_vhost_vdpa_listener_region_add_unaligned(v, section->mr->name,
section->offset_within_address_space & ~TARGET_PAGE_MASK,
section->offset_within_region & ~TARGET_PAGE_MASK);
section->offset_within_address_space & ~page_mask,
section->offset_within_region & ~page_mask);
return;
}
iova = TARGET_PAGE_ALIGN(section->offset_within_address_space);
llend = vhost_vdpa_section_end(section);
iova = ROUND_UP(section->offset_within_address_space, page_size);
llend = vhost_vdpa_section_end(section, page_mask);
if (int128_ge(int128_make64(iova), llend)) {
return;
}
@ -396,25 +400,27 @@ static void vhost_vdpa_listener_region_del(MemoryListener *listener,
hwaddr iova;
Int128 llend, llsize;
int ret;
int page_size = qemu_target_page_size();
int page_mask = -page_size;
if (vhost_vdpa_listener_skipped_section(section, v->iova_range.first,
v->iova_range.last)) {
v->iova_range.last, page_mask)) {
return;
}
if (memory_region_is_iommu(section->mr)) {
vhost_vdpa_iommu_region_del(listener, section);
}
if (unlikely((section->offset_within_address_space & ~TARGET_PAGE_MASK) !=
(section->offset_within_region & ~TARGET_PAGE_MASK))) {
if (unlikely((section->offset_within_address_space & ~page_mask) !=
(section->offset_within_region & ~page_mask))) {
trace_vhost_vdpa_listener_region_del_unaligned(v, section->mr->name,
section->offset_within_address_space & ~TARGET_PAGE_MASK,
section->offset_within_region & ~TARGET_PAGE_MASK);
section->offset_within_address_space & ~page_mask,
section->offset_within_region & ~page_mask);
return;
}
iova = TARGET_PAGE_ALIGN(section->offset_within_address_space);
llend = vhost_vdpa_section_end(section);
iova = ROUND_UP(section->offset_within_address_space, page_size);
llend = vhost_vdpa_section_end(section, page_mask);
trace_vhost_vdpa_listener_region_del(v, iova,
int128_get64(int128_sub(llend, int128_one())));
@ -876,18 +882,17 @@ static int vhost_vdpa_get_vq_index(struct vhost_dev *dev, int idx)
return idx;
}
static int vhost_vdpa_set_vring_ready(struct vhost_dev *dev)
int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx)
{
int i;
trace_vhost_vdpa_set_vring_ready(dev);
for (i = 0; i < dev->nvqs; ++i) {
struct vhost_vring_state state = {
.index = dev->vq_index + i,
.num = 1,
};
vhost_vdpa_call(dev, VHOST_VDPA_SET_VRING_ENABLE, &state);
}
return 0;
struct vhost_dev *dev = v->dev;
struct vhost_vring_state state = {
.index = idx,
.num = 1,
};
int r = vhost_vdpa_call(dev, VHOST_VDPA_SET_VRING_ENABLE, &state);
trace_vhost_vdpa_set_vring_ready(dev, idx, r);
return r;
}
static int vhost_vdpa_set_config_call(struct vhost_dev *dev,
@ -1298,7 +1303,6 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started)
if (unlikely(!ok)) {
return -1;
}
vhost_vdpa_set_vring_ready(dev);
} else {
vhost_vdpa_suspend(dev);
vhost_vdpa_svqs_stop(dev);

139
hw/virtio/virtio-qmp.c
View File

@ -17,6 +17,7 @@
#include "qapi/qapi-commands-qom.h"
#include "qapi/qmp/qobject.h"
#include "qapi/qmp/qjson.h"
#include "hw/virtio/vhost-user.h"
#include "standard-headers/linux/virtio_ids.h"
#include "standard-headers/linux/vhost_types.h"
@ -30,32 +31,13 @@
#include "standard-headers/linux/virtio_iommu.h"
#include "standard-headers/linux/virtio_mem.h"
#include "standard-headers/linux/virtio_vsock.h"
#include "standard-headers/linux/virtio_gpio.h"
#include CONFIG_DEVICES
#define FEATURE_ENTRY(name, desc) (qmp_virtio_feature_map_t) \
{ .virtio_bit = name, .feature_desc = desc }
enum VhostUserProtocolFeature {
VHOST_USER_PROTOCOL_F_MQ = 0,
VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1,
VHOST_USER_PROTOCOL_F_RARP = 2,
VHOST_USER_PROTOCOL_F_REPLY_ACK = 3,
VHOST_USER_PROTOCOL_F_NET_MTU = 4,
VHOST_USER_PROTOCOL_F_BACKEND_REQ = 5,
VHOST_USER_PROTOCOL_F_CROSS_ENDIAN = 6,
VHOST_USER_PROTOCOL_F_CRYPTO_SESSION = 7,
VHOST_USER_PROTOCOL_F_PAGEFAULT = 8,
VHOST_USER_PROTOCOL_F_CONFIG = 9,
VHOST_USER_PROTOCOL_F_BACKEND_SEND_FD = 10,
VHOST_USER_PROTOCOL_F_HOST_NOTIFIER = 11,
VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD = 12,
VHOST_USER_PROTOCOL_F_RESET_DEVICE = 13,
VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS = 14,
VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS = 15,
VHOST_USER_PROTOCOL_F_MAX
};
/* Virtio transport features mapping */
static const qmp_virtio_feature_map_t virtio_transport_map[] = {
/* Virtio device transport features */
@ -136,6 +118,9 @@ static const qmp_virtio_feature_map_t vhost_user_protocol_map[] = {
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS, \
"VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS: Configuration for "
"memory slots supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_STATUS, \
"VHOST_USER_PROTOCOL_F_STATUS: Querying and notifying back-end "
"device status supported"),
{ -1, "" }
};
@ -178,6 +163,8 @@ static const qmp_virtio_feature_map_t virtio_blk_feature_map[] = {
"VIRTIO_BLK_F_DISCARD: Discard command supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_WRITE_ZEROES, \
"VIRTIO_BLK_F_WRITE_ZEROES: Write zeroes command supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_SECURE_ERASE, \
"VIRTIO_BLK_F_SECURE_ERASE: Secure erase supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_ZONED, \
"VIRTIO_BLK_F_ZONED: Zoned block devices"),
#ifndef VIRTIO_BLK_NO_LEGACY
@ -301,6 +288,14 @@ static const qmp_virtio_feature_map_t virtio_net_feature_map[] = {
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_MAC_ADDR, \
"VIRTIO_NET_F_CTRL_MAC_ADDR: MAC address set through control "
"channel"),
FEATURE_ENTRY(VIRTIO_NET_F_NOTF_COAL, \
"VIRTIO_NET_F_NOTF_COAL: Device supports coalescing notifications"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_USO4, \
"VIRTIO_NET_F_GUEST_USO4: Driver can receive USOv4"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_USO6, \
"VIRTIO_NET_F_GUEST_USO4: Driver can receive USOv6"),
FEATURE_ENTRY(VIRTIO_NET_F_HOST_USO, \
"VIRTIO_NET_F_HOST_USO: Device can receive USO"),
FEATURE_ENTRY(VIRTIO_NET_F_HASH_REPORT, \
"VIRTIO_NET_F_HASH_REPORT: Hash reporting supported"),
FEATURE_ENTRY(VIRTIO_NET_F_RSS, \
@ -471,6 +466,18 @@ static const qmp_virtio_feature_map_t virtio_rng_feature_map[] = {
};
#endif
/* virtio/vhost-gpio features mapping */
#ifdef CONFIG_VHOST_USER_GPIO
static const qmp_virtio_feature_map_t virtio_gpio_feature_map[] = {
FEATURE_ENTRY(VIRTIO_GPIO_F_IRQ, \
"VIRTIO_GPIO_F_IRQ: Device supports interrupts on GPIO lines"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
#define CONVERT_FEATURES(type, map, is_status, bitmap) \
({ \
type *list = NULL; \
@ -627,6 +634,12 @@ VirtioDeviceFeatures *qmp_decode_features(uint16_t device_id, uint64_t bitmap)
features->dev_features =
CONVERT_FEATURES(strList, virtio_rng_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VHOST_USER_GPIO
case VIRTIO_ID_GPIO:
features->dev_features =
CONVERT_FEATURES(strList, virtio_gpio_feature_map, 0, bitmap);
break;
#endif
/* No features */
case VIRTIO_ID_9P:
@ -653,7 +666,6 @@ VirtioDeviceFeatures *qmp_decode_features(uint16_t device_id, uint64_t bitmap)
case VIRTIO_ID_DMABUF:
case VIRTIO_ID_PARAM_SERV:
case VIRTIO_ID_AUDIO_POLICY:
case VIRTIO_ID_GPIO:
break;
default:
g_assert_not_reached();
@ -667,70 +679,43 @@ VirtioDeviceFeatures *qmp_decode_features(uint16_t device_id, uint64_t bitmap)
return features;
}
static int query_dev_child(Object *child, void *opaque)
{
VirtioInfoList **vdevs = opaque;
Object *dev = object_dynamic_cast(child, TYPE_VIRTIO_DEVICE);
if (dev != NULL && DEVICE(dev)->realized) {
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VirtioInfo *info = g_new(VirtioInfo, 1);
/* Get canonical path & name of device */
info->path = object_get_canonical_path(dev);
info->name = g_strdup(vdev->name);
QAPI_LIST_PREPEND(*vdevs, info);
}
return 0;
}
VirtioInfoList *qmp_x_query_virtio(Error **errp)
{
VirtioInfoList *list = NULL;
VirtioInfo *node;
VirtIODevice *vdev;
VirtioInfoList *vdevs = NULL;
QTAILQ_FOREACH(vdev, &virtio_list, next) {
DeviceState *dev = DEVICE(vdev);
Error *err = NULL;
QObject *obj = qmp_qom_get(dev->canonical_path, "realized", &err);
if (err == NULL) {
GString *is_realized = qobject_to_json_pretty(obj, true);
/* virtio device is NOT realized, remove it from list */
if (!strncmp(is_realized->str, "false", 4)) {
QTAILQ_REMOVE(&virtio_list, vdev, next);
} else {
node = g_new(VirtioInfo, 1);
node->path = g_strdup(dev->canonical_path);
node->name = g_strdup(vdev->name);
QAPI_LIST_PREPEND(list, node);
}
g_string_free(is_realized, true);
}
qobject_unref(obj);
/* Query the QOM composition tree recursively for virtio devices */
object_child_foreach_recursive(object_get_root(), query_dev_child, &vdevs);
if (vdevs == NULL) {
error_setg(errp, "No virtio devices found");
}
return list;
return vdevs;
}
VirtIODevice *qmp_find_virtio_device(const char *path)
{
VirtIODevice *vdev;
QTAILQ_FOREACH(vdev, &virtio_list, next) {
DeviceState *dev = DEVICE(vdev);
if (strcmp(dev->canonical_path, path) != 0) {
continue;
}
Error *err = NULL;
QObject *obj = qmp_qom_get(dev->canonical_path, "realized", &err);
if (err == NULL) {
GString *is_realized = qobject_to_json_pretty(obj, true);
/* virtio device is NOT realized, remove it from list */
if (!strncmp(is_realized->str, "false", 4)) {
g_string_free(is_realized, true);
qobject_unref(obj);
QTAILQ_REMOVE(&virtio_list, vdev, next);
return NULL;
}
g_string_free(is_realized, true);
} else {
/* virtio device doesn't exist in QOM tree */
QTAILQ_REMOVE(&virtio_list, vdev, next);
qobject_unref(obj);
return NULL;
}
/* device exists in QOM tree & is realized */
qobject_unref(obj);
return vdev;
/* Verify the canonical path is a realized virtio device */
Object *dev = object_dynamic_cast(object_resolve_path(path, NULL),
TYPE_VIRTIO_DEVICE);
if (!dev || !DEVICE(dev)->realized) {
return NULL;
}
return NULL;
return VIRTIO_DEVICE(dev);
}
VirtioStatus *qmp_x_query_virtio_status(const char *path, Error **errp)
@ -740,7 +725,7 @@ VirtioStatus *qmp_x_query_virtio_status(const char *path, Error **errp)
vdev = qmp_find_virtio_device(path);
if (vdev == NULL) {
error_setg(errp, "Path %s is not a VirtIODevice", path);
error_setg(errp, "Path %s is not a realized VirtIODevice", path);
return NULL;
}

7
hw/virtio/virtio-qmp.h
View File

@ -15,13 +15,6 @@
#include "hw/virtio/virtio.h"
#include "hw/virtio/vhost.h"
#include "qemu/queue.h"
typedef QTAILQ_HEAD(QmpVirtIODeviceList, VirtIODevice) QmpVirtIODeviceList;
/* QAPI list of realized VirtIODevices */
extern QmpVirtIODeviceList virtio_list;
VirtIODevice *qmp_find_virtio_device(const char *path);
VirtioDeviceStatus *qmp_decode_status(uint8_t bitmap);
VhostDeviceProtocols *qmp_decode_protocols(uint64_t bitmap);

64
hw/virtio/virtio.c
View File

@ -45,8 +45,6 @@
#include "standard-headers/linux/virtio_mem.h"
#include "standard-headers/linux/virtio_vsock.h"
QmpVirtIODeviceList virtio_list;
/*
* Maximum size of virtio device config space
*/
@ -999,7 +997,12 @@ void virtqueue_push(VirtQueue *vq, const VirtQueueElement *elem,
/* Called within rcu_read_lock(). */
static int virtqueue_num_heads(VirtQueue *vq, unsigned int idx)
{
uint16_t num_heads = vring_avail_idx(vq) - idx;
uint16_t avail_idx, num_heads;
/* Use shadow index whenever possible. */
avail_idx = (vq->shadow_avail_idx != idx) ? vq->shadow_avail_idx
: vring_avail_idx(vq);
num_heads = avail_idx - idx;
/* Check it isn't doing very strange things with descriptor numbers. */
if (num_heads > vq->vring.num) {
@ -1007,8 +1010,15 @@ static int virtqueue_num_heads(VirtQueue *vq, unsigned int idx)
idx, vq->shadow_avail_idx);
return -EINVAL;
}
/* On success, callers read a descriptor at vq->last_avail_idx.
* Make sure descriptor read does not bypass avail index read. */
/*
* On success, callers read a descriptor at vq->last_avail_idx.
* Make sure descriptor read does not bypass avail index read.
*
* This is necessary even if we are using a shadow index, since
* the shadow index could have been initialized by calling
* vring_avail_idx() outside of this function, i.e., by a guest
* memory read not accompanied by a barrier.
*/
if (num_heads) {
smp_rmb();
}
@ -1039,9 +1049,10 @@ enum {
VIRTQUEUE_READ_DESC_MORE = 1, /* more buffers in chain */
};
/* Reads the 'desc->next' descriptor into '*desc'. */
static int virtqueue_split_read_next_desc(VirtIODevice *vdev, VRingDesc *desc,
MemoryRegionCache *desc_cache,
unsigned int max, unsigned int *next)
unsigned int max)
{
/* If this descriptor says it doesn't chain, we're done. */
if (!(desc->flags & VRING_DESC_F_NEXT)) {
@ -1049,16 +1060,12 @@ static int virtqueue_split_read_next_desc(VirtIODevice *vdev, VRingDesc *desc,
}
/* Check they're not leading us off end of descriptors. */
*next = desc->next;
/* Make sure compiler knows to grab that: we don't want it changing! */
smp_wmb();
if (*next >= max) {
virtio_error(vdev, "Desc next is %u", *next);
if (desc->next >= max) {
virtio_error(vdev, "Desc next is %u", desc->next);
return VIRTQUEUE_READ_DESC_ERROR;
}
vring_split_desc_read(vdev, desc, desc_cache, *next);
vring_split_desc_read(vdev, desc, desc_cache, desc->next);
return VIRTQUEUE_READ_DESC_MORE;
}
@ -1071,10 +1078,12 @@ static void virtqueue_split_get_avail_bytes(VirtQueue *vq,
VirtIODevice *vdev = vq->vdev;
unsigned int idx;
unsigned int total_bufs, in_total, out_total;
MemoryRegionCache indirect_desc_cache = MEMORY_REGION_CACHE_INVALID;
MemoryRegionCache indirect_desc_cache;
int64_t len = 0;
int rc;
address_space_cache_init_empty(&indirect_desc_cache);
idx = vq->last_avail_idx;
total_bufs = in_total = out_total = 0;
@ -1136,7 +1145,7 @@ static void virtqueue_split_get_avail_bytes(VirtQueue *vq,
goto done;
}
rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache, max, &i);
rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache, max);
} while (rc == VIRTQUEUE_READ_DESC_MORE);
if (rc == VIRTQUEUE_READ_DESC_ERROR) {
@ -1207,12 +1216,14 @@ static void virtqueue_packed_get_avail_bytes(VirtQueue *vq,
VirtIODevice *vdev = vq->vdev;
unsigned int idx;
unsigned int total_bufs, in_total, out_total;
MemoryRegionCache indirect_desc_cache;
MemoryRegionCache *desc_cache;
MemoryRegionCache indirect_desc_cache = MEMORY_REGION_CACHE_INVALID;
int64_t len = 0;
VRingPackedDesc desc;
bool wrap_counter;
address_space_cache_init_empty(&indirect_desc_cache);
idx = vq->last_avail_idx;
wrap_counter = vq->last_avail_wrap_counter;
total_bufs = in_total = out_total = 0;
@ -1487,7 +1498,7 @@ static void *virtqueue_split_pop(VirtQueue *vq, size_t sz)
{
unsigned int i, head, max;
VRingMemoryRegionCaches *caches;
MemoryRegionCache indirect_desc_cache = MEMORY_REGION_CACHE_INVALID;
MemoryRegionCache indirect_desc_cache;
MemoryRegionCache *desc_cache;
int64_t len;
VirtIODevice *vdev = vq->vdev;
@ -1498,6 +1509,8 @@ static void *virtqueue_split_pop(VirtQueue *vq, size_t sz)
VRingDesc desc;
int rc;
address_space_cache_init_empty(&indirect_desc_cache);
RCU_READ_LOCK_GUARD();
if (virtio_queue_empty_rcu(vq)) {
goto done;
@ -1587,7 +1600,7 @@ static void *virtqueue_split_pop(VirtQueue *vq, size_t sz)
goto err_undo_map;
}
rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache, max, &i);
rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache, max);
} while (rc == VIRTQUEUE_READ_DESC_MORE);
if (rc == VIRTQUEUE_READ_DESC_ERROR) {
@ -1624,7 +1637,7 @@ static void *virtqueue_packed_pop(VirtQueue *vq, size_t sz)
{
unsigned int i, max;
VRingMemoryRegionCaches *caches;
MemoryRegionCache indirect_desc_cache = MEMORY_REGION_CACHE_INVALID;
MemoryRegionCache indirect_desc_cache;
MemoryRegionCache *desc_cache;
int64_t len;
VirtIODevice *vdev = vq->vdev;
@ -1636,6 +1649,8 @@ static void *virtqueue_packed_pop(VirtQueue *vq, size_t sz)
uint16_t id;
int rc;
address_space_cache_init_empty(&indirect_desc_cache);
RCU_READ_LOCK_GUARD();
if (virtio_queue_packed_empty_rcu(vq)) {
goto done;
@ -3651,7 +3666,6 @@ static void virtio_device_realize(DeviceState *dev, Error **errp)
vdev->listener.commit = virtio_memory_listener_commit;
vdev->listener.name = "virtio";
memory_listener_register(&vdev->listener, vdev->dma_as);
QTAILQ_INSERT_TAIL(&virtio_list, vdev, next);
}
static void virtio_device_unrealize(DeviceState *dev)
@ -3666,7 +3680,6 @@ static void virtio_device_unrealize(DeviceState *dev)
vdc->unrealize(dev);
}
QTAILQ_REMOVE(&virtio_list, vdev, next);
g_free(vdev->bus_name);
vdev->bus_name = NULL;
}
@ -3840,8 +3853,6 @@ static void virtio_device_class_init(ObjectClass *klass, void *data)
vdc->stop_ioeventfd = virtio_device_stop_ioeventfd_impl;
vdc->legacy_features |= VIRTIO_LEGACY_FEATURES;
QTAILQ_INIT(&virtio_list);
}
bool virtio_device_ioeventfd_enabled(VirtIODevice *vdev)
@ -3970,13 +3981,15 @@ VirtioQueueElement *qmp_x_query_virtio_queue_element(const char *path,
} else {
unsigned int head, i, max;
VRingMemoryRegionCaches *caches;
MemoryRegionCache indirect_desc_cache = MEMORY_REGION_CACHE_INVALID;
MemoryRegionCache indirect_desc_cache;
MemoryRegionCache *desc_cache;
VRingDesc desc;
VirtioRingDescList *list = NULL;
VirtioRingDescList *node;
int rc; int ndescs;
address_space_cache_init_empty(&indirect_desc_cache);
RCU_READ_LOCK_GUARD();
max = vq->vring.num;
@ -4041,8 +4054,7 @@ VirtioQueueElement *qmp_x_query_virtio_queue_element(const char *path,
list = node;
ndescs++;
rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache,
max, &i);
rc = virtqueue_split_read_next_desc(vdev, &desc, desc_cache, max);
} while (rc == VIRTQUEUE_READ_DESC_MORE);
element->descs = list;
done:

16
include/exec/memory.h
View File

@ -2671,9 +2671,6 @@ struct MemoryRegionCache {
bool is_write;
};
#define MEMORY_REGION_CACHE_INVALID ((MemoryRegionCache) { .mrs.mr = NULL })
/* address_space_ld*_cached: load from a cached #MemoryRegion
* address_space_st*_cached: store into a cached #MemoryRegion
*
@ -2762,6 +2759,19 @@ int64_t address_space_cache_init(MemoryRegionCache *cache,
hwaddr len,
bool is_write);
/**
* address_space_cache_init_empty: Initialize empty #MemoryRegionCache
*
* @cache: The #MemoryRegionCache to operate on.
*
* Initializes #MemoryRegionCache structure without memory region attached.
* Cache initialized this way can only be safely destroyed, but not used.
*/
static inline void address_space_cache_init_empty(MemoryRegionCache *cache)
{
cache->mrs.mr = NULL;
}
/**
* address_space_cache_invalidate: complete a write to a #MemoryRegionCache
*

3
include/hw/acpi/acpi_dev_interface.h
View File

@ -3,7 +3,6 @@
#include "qapi/qapi-types-acpi.h"
#include "qom/object.h"
#include "hw/boards.h"
#include "hw/qdev-core.h"
/* These values are part of guest ABI, and can not be changed */
@ -52,7 +51,5 @@ struct AcpiDeviceIfClass {
/* <public> */
void (*ospm_status)(AcpiDeviceIf *adev, ACPIOSTInfoList ***list);
void (*send_event)(AcpiDeviceIf *adev, AcpiEventStatusBits ev);
void (*madt_cpu)(int uid, const CPUArchIdList *apic_ids, GArray *entry,
bool force_enabled);
};
#endif

6
include/hw/acpi/cpu.h
View File

@ -15,6 +15,7 @@
#include "hw/qdev-core.h"
#include "hw/acpi/acpi.h"
#include "hw/acpi/aml-build.h"
#include "hw/boards.h"
#include "hw/hotplug.h"
typedef struct AcpiCpuStatus {
@ -55,8 +56,11 @@ typedef struct CPUHotplugFeatures {
const char *smi_path;
} CPUHotplugFeatures;
typedef void (*build_madt_cpu_fn)(int uid, const CPUArchIdList *apic_ids,
GArray *entry, bool force_enabled);
void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts,
hwaddr io_base,
build_madt_cpu_fn build_madt_cpu, hwaddr io_base,
const char *res_root,
const char *event_handler_method);

2
include/hw/acpi/generic_event_device.h
View File

@ -69,8 +69,6 @@
#define TYPE_ACPI_GED "acpi-ged"
OBJECT_DECLARE_SIMPLE_TYPE(AcpiGedState, ACPI_GED)
#define TYPE_ACPI_GED_X86 "acpi-ged-x86"
#define ACPI_GED_EVT_SEL_OFFSET 0x0
#define ACPI_GED_EVT_SEL_LEN 0x4

30
include/hw/cxl/cxl_component.h
View File

@ -135,6 +135,10 @@ REG32(CXL_RAS_ERR_HEADER0, CXL_RAS_REGISTERS_OFFSET + 0x18)
REG32(CXL_HDM_DECODER##n##_TARGET_LIST_LO, \
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x24) \
REG32(CXL_HDM_DECODER##n##_TARGET_LIST_HI, \
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x28) \
REG32(CXL_HDM_DECODER##n##_DPA_SKIP_LO, \
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x24) \
REG32(CXL_HDM_DECODER##n##_DPA_SKIP_HI, \
CXL_HDM_REGISTERS_OFFSET + (0x20 * n) + 0x28)
REG32(CXL_HDM_DECODER_CAPABILITY, CXL_HDM_REGISTERS_OFFSET)
@ -147,7 +151,13 @@ REG32(CXL_HDM_DECODER_GLOBAL_CONTROL, CXL_HDM_REGISTERS_OFFSET + 4)
FIELD(CXL_HDM_DECODER_GLOBAL_CONTROL, POISON_ON_ERR_EN, 0, 1)
FIELD(CXL_HDM_DECODER_GLOBAL_CONTROL, HDM_DECODER_ENABLE, 1, 1)
/* Support 4 decoders at all levels of topology */
#define CXL_HDM_DECODER_COUNT 4
HDM_DECODER_INIT(0);
HDM_DECODER_INIT(1);
HDM_DECODER_INIT(2);
HDM_DECODER_INIT(3);
/* 8.2.5.13 - CXL Extended Security Capability Structure (Root complex only) */
#define EXTSEC_ENTRY_MAX 256
@ -225,26 +235,14 @@ void cxl_component_create_dvsec(CXLComponentState *cxl_cstate,
enum reg_type cxl_dev_type, uint16_t length,
uint16_t type, uint8_t rev, uint8_t *body);
static inline int cxl_decoder_count_enc(int count)
{
switch (count) {
case 1: return 0;
case 2: return 1;
case 4: return 2;
case 6: return 3;
case 8: return 4;
case 10: return 5;
}
return 0;
}
int cxl_decoder_count_enc(int count);
int cxl_decoder_count_dec(int enc_cnt);
uint8_t cxl_interleave_ways_enc(int iw, Error **errp);
int cxl_interleave_ways_dec(uint8_t iw_enc, Error **errp);
uint8_t cxl_interleave_granularity_enc(uint64_t gran, Error **errp);
static inline hwaddr cxl_decode_ig(int ig)
{
return 1ULL << (ig + 8);
}
hwaddr cxl_decode_ig(int ig);
CXLComponentState *cxl_get_hb_cstate(PCIHostState *hb);
bool cxl_get_hb_passthrough(PCIHostState *hb);

6
include/hw/i386/pc.h
View File

@ -129,6 +129,12 @@ struct PCMachineClass {
/* resizable acpi blob compat */
bool resizable_acpi_blob;
/*
* whether the machine type implements broken 32-bit address space bound
* check for memory.
*/
bool broken_32bit_mem_addr_check;
};
#define TYPE_PC_MACHINE "generic-pc-machine"

3
include/hw/pci/pci_bridge.h
View File

@ -77,6 +77,9 @@ struct PCIBridge {
pci_map_irq_fn map_irq;
const char *bus_name;
/* SLT is RO for PCIE to PCIE bridges, but old QEMU versions had it RW */
bool pcie_writeable_slt_bug;
};
#define PCI_BRIDGE_DEV_PROP_CHASSIS_NR "chassis_nr"

3
include/hw/virtio/vhost-backend.h
View File

@ -196,4 +196,7 @@ int vhost_backend_handle_iotlb_msg(struct vhost_dev *dev,
int vhost_user_gpu_set_socket(struct vhost_dev *dev, int fd);
int vhost_user_get_shared_object(struct vhost_dev *dev, unsigned char *uuid,
int *dmabuf_fd);
#endif /* VHOST_BACKEND_H */

46
include/hw/virtio/vhost-user-device.h Normal file
View File

@ -0,0 +1,46 @@
/*
* Vhost-user generic virtio device
*
* Copyright (c) 2023 Linaro Ltd
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef QEMU_VHOST_USER_DEVICE_H
#define QEMU_VHOST_USER_DEVICE_H
#include "hw/virtio/vhost.h"
#include "hw/virtio/vhost-user.h"
#define TYPE_VHOST_USER_BASE "vhost-user-base"
OBJECT_DECLARE_TYPE(VHostUserBase, VHostUserBaseClass, VHOST_USER_BASE)
struct VHostUserBase {
VirtIODevice parent;
/* Properties */
CharBackend chardev;
uint16_t virtio_id;
uint32_t num_vqs;
uint32_t config_size;
/* State tracking */
VhostUserState vhost_user;
struct vhost_virtqueue *vhost_vq;
struct vhost_dev vhost_dev;
GPtrArray *vqs;
bool connected;
};
/* needed so we can use the base realize after specialisation
tweaks */
struct VHostUserBaseClass {
/*< private >*/
VirtioDeviceClass parent_class;
/*< public >*/
DeviceRealize parent_realize;
};
/* shared for the benefit of the derived pci class */
#define TYPE_VHOST_USER_DEVICE "vhost-user-device"
#endif /* QEMU_VHOST_USER_DEVICE_H */

22
include/hw/virtio/vhost-user.h
View File

@ -11,6 +11,28 @@
#include "chardev/char-fe.h"
#include "hw/virtio/virtio.h"
enum VhostUserProtocolFeature {
VHOST_USER_PROTOCOL_F_MQ = 0,
VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1,
VHOST_USER_PROTOCOL_F_RARP = 2,
VHOST_USER_PROTOCOL_F_REPLY_ACK = 3,
VHOST_USER_PROTOCOL_F_NET_MTU = 4,
VHOST_USER_PROTOCOL_F_BACKEND_REQ = 5,
VHOST_USER_PROTOCOL_F_CROSS_ENDIAN = 6,
VHOST_USER_PROTOCOL_F_CRYPTO_SESSION = 7,
VHOST_USER_PROTOCOL_F_PAGEFAULT = 8,
VHOST_USER_PROTOCOL_F_CONFIG = 9,
VHOST_USER_PROTOCOL_F_BACKEND_SEND_FD = 10,
VHOST_USER_PROTOCOL_F_HOST_NOTIFIER = 11,
VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD = 12,
VHOST_USER_PROTOCOL_F_RESET_DEVICE = 13,
VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS = 14,
VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS = 15,
VHOST_USER_PROTOCOL_F_STATUS = 16,
VHOST_USER_PROTOCOL_F_SHARED_OBJECT = 17,
VHOST_USER_PROTOCOL_F_MAX
};
/**
* VhostUserHostNotifier - notifier information for one queue
* @rcu: rcu_head for cleanup

1
include/hw/virtio/vhost-vdpa.h
View File

@ -57,6 +57,7 @@ typedef struct vhost_vdpa {
} VhostVDPA;
int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range *iova_range);
int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx);
int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova,
hwaddr size, void *vaddr, bool readonly);

100
include/hw/virtio/virtio-dmabuf.h Normal file
View File

@ -0,0 +1,100 @@
/*
* Virtio Shared dma-buf
*
* Copyright Red Hat, Inc. 2023
*
* Authors:
* Albert Esteve <aesteve@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 VIRTIO_DMABUF_H
#define VIRTIO_DMABUF_H
#include "qemu/uuid.h"
#include "vhost.h"
typedef enum SharedObjectType {
TYPE_INVALID = 0,
TYPE_DMABUF,
TYPE_VHOST_DEV,
} SharedObjectType;
typedef struct VirtioSharedObject {
SharedObjectType type;
gpointer value;
} VirtioSharedObject;
/**
* virtio_add_dmabuf() - Add a new dma-buf resource to the lookup table
* @uuid: new resource's UUID
* @dmabuf_fd: the dma-buf descriptor that will be stored and shared with
* other virtio devices. The caller retains ownership over the
* descriptor and its lifecycle.
*
* Note: @dmabuf_fd must be a valid (non-negative) file descriptor.
*
* Return: true if the UUID did not exist and the resource has been added,
* false if another resource with the same UUID already existed.
* Note that if it finds a repeated UUID, the resource is not inserted in
* the lookup table.
*/
bool virtio_add_dmabuf(QemuUUID *uuid, int dmabuf_fd);
/**
* virtio_add_vhost_device() - Add a new exporter vhost device that holds the
* resource with the associated UUID
* @uuid: new resource's UUID
* @dev: the pointer to the vhost device that holds the resource. The caller
* retains ownership over the device struct and its lifecycle.
*
* Return: true if the UUID did not exist and the device has been tracked,
* false if another resource with the same UUID already existed.
* Note that if it finds a repeated UUID, the resource is not inserted in
* the lookup table.
*/
bool virtio_add_vhost_device(QemuUUID *uuid, struct vhost_dev *dev);
/**
* virtio_remove_resource() - Removes a resource from the lookup table
* @uuid: resource's UUID
*
* Return: true if the UUID has been found and removed from the lookup table.
*/
bool virtio_remove_resource(const QemuUUID *uuid);
/**
* virtio_lookup_dmabuf() - Looks for a dma-buf resource in the lookup table
* @uuid: resource's UUID
*
* Return: the dma-buf file descriptor integer, or -1 if the key is not found.
*/
int virtio_lookup_dmabuf(const QemuUUID *uuid);
/**
* virtio_lookup_vhost_device() - Looks for an exporter vhost device in the
* lookup table
* @uuid: resource's UUID
*
* Return: pointer to the vhost_dev struct, or NULL if the key is not found.
*/
struct vhost_dev *virtio_lookup_vhost_device(const QemuUUID *uuid);
/**
* virtio_object_type() - Looks for the type of resource in the lookup table
* @uuid: resource's UUID
*
* Return: the type of resource associated with the UUID, or TYPE_INVALID if
* the key is not found.
*/
SharedObjectType virtio_object_type(const QemuUUID *uuid);
/**
* virtio_free_resources() - Destroys all keys and values of the shared
* resources lookup table, and frees them
*/
void virtio_free_resources(void);
#endif /* VIRTIO_DMABUF_H */

6
include/hw/virtio/virtio-net.h
View File

@ -38,6 +38,12 @@ OBJECT_DECLARE_SIMPLE_TYPE(VirtIONet, VIRTIO_NET)
/* Maximum VIRTIO_NET_CTRL_MAC_TABLE_SET unicast + multicast entries. */
#define MAC_TABLE_ENTRIES 64
/*
* The maximum number of VLANs in the VLAN filter table
* added by VIRTIO_NET_CTRL_VLAN_ADD
*/
#define MAX_VLAN (1 << 12) /* Per 802.1Q definition */
typedef struct virtio_net_conf
{
uint32_t txtimer;

2
include/qemu/uuid.h
View File

@ -96,4 +96,6 @@ int qemu_uuid_parse(const char *str, QemuUUID *uuid);
QemuUUID qemu_uuid_bswap(QemuUUID uuid);
uint32_t qemu_uuid_hash(const void *uuid);
#endif

153
net/vhost-vdpa.c
View File

@ -114,6 +114,7 @@ static const uint64_t vdpa_svq_device_features =
BIT_ULL(VIRTIO_NET_F_STATUS) |
BIT_ULL(VIRTIO_NET_F_CTRL_VQ) |
BIT_ULL(VIRTIO_NET_F_CTRL_RX) |
BIT_ULL(VIRTIO_NET_F_CTRL_VLAN) |
BIT_ULL(VIRTIO_NET_F_CTRL_RX_EXTRA) |
BIT_ULL(VIRTIO_NET_F_MQ) |
BIT_ULL(VIRTIO_F_ANY_LAYOUT) |
@ -374,6 +375,22 @@ static int vhost_vdpa_net_data_start(NetClientState *nc)
return 0;
}
static int vhost_vdpa_net_data_load(NetClientState *nc)
{
VhostVDPAState *s = DO_UPCAST(VhostVDPAState, nc, nc);
struct vhost_vdpa *v = &s->vhost_vdpa;
bool has_cvq = v->dev->vq_index_end % 2;
if (has_cvq) {
return 0;
}
for (int i = 0; i < v->dev->nvqs; ++i) {
vhost_vdpa_set_vring_ready(v, i + v->dev->vq_index);
}
return 0;
}
static void vhost_vdpa_net_client_stop(NetClientState *nc)
{
VhostVDPAState *s = DO_UPCAST(VhostVDPAState, nc, nc);
@ -388,6 +405,8 @@ static void vhost_vdpa_net_client_stop(NetClientState *nc)
dev = s->vhost_vdpa.dev;
if (dev->vq_index + dev->nvqs == dev->vq_index_end) {
g_clear_pointer(&s->vhost_vdpa.iova_tree, vhost_iova_tree_delete);
} else {
s->vhost_vdpa.iova_tree = NULL;
}
}
@ -396,6 +415,7 @@ static NetClientInfo net_vhost_vdpa_info = {
.size = sizeof(VhostVDPAState),
.receive = vhost_vdpa_receive,
.start = vhost_vdpa_net_data_start,
.load = vhost_vdpa_net_data_load,
.stop = vhost_vdpa_net_client_stop,
.cleanup = vhost_vdpa_cleanup,
.has_vnet_hdr = vhost_vdpa_has_vnet_hdr,
@ -508,7 +528,7 @@ static int vhost_vdpa_net_cvq_start(NetClientState *nc)
s0 = vhost_vdpa_net_first_nc_vdpa(s);
v->shadow_data = s0->vhost_vdpa.shadow_vqs_enabled;
v->shadow_vqs_enabled = s->always_svq;
v->shadow_vqs_enabled = s0->vhost_vdpa.shadow_vqs_enabled;
s->vhost_vdpa.address_space_id = VHOST_VDPA_GUEST_PA_ASID;
if (s->vhost_vdpa.shadow_data) {
@ -627,7 +647,7 @@ static ssize_t vhost_vdpa_net_cvq_add(VhostVDPAState *s, size_t out_len,
* descriptor. Also, we need to take the answer before SVQ pulls by itself,
* when BQL is released
*/
return vhost_svq_poll(svq);
return vhost_svq_poll(svq, 1);
}
static ssize_t vhost_vdpa_net_load_cmd(VhostVDPAState *s, uint8_t class,
@ -968,7 +988,51 @@ static int vhost_vdpa_net_load_rx(VhostVDPAState *s,
return 0;
}
static int vhost_vdpa_net_load(NetClientState *nc)
static int vhost_vdpa_net_load_single_vlan(VhostVDPAState *s,
const VirtIONet *n,
uint16_t vid)
{
const struct iovec data = {
.iov_base = &vid,
.iov_len = sizeof(vid),
};
ssize_t dev_written = vhost_vdpa_net_load_cmd(s, VIRTIO_NET_CTRL_VLAN,
VIRTIO_NET_CTRL_VLAN_ADD,
&data, 1);
if (unlikely(dev_written < 0)) {
return dev_written;
}
if (unlikely(*s->status != VIRTIO_NET_OK)) {
return -EIO;
}
return 0;
}
static int vhost_vdpa_net_load_vlan(VhostVDPAState *s,
const VirtIONet *n)
{
int r;
if (!virtio_vdev_has_feature(&n->parent_obj, VIRTIO_NET_F_CTRL_VLAN)) {
return 0;
}
for (int i = 0; i < MAX_VLAN >> 5; i++) {
for (int j = 0; n->vlans[i] && j <= 0x1f; j++) {
if (n->vlans[i] & (1U << j)) {
r = vhost_vdpa_net_load_single_vlan(s, n, (i << 5) + j);
if (unlikely(r != 0)) {
return r;
}
}
}
}
return 0;
}
static int vhost_vdpa_net_cvq_load(NetClientState *nc)
{
VhostVDPAState *s = DO_UPCAST(VhostVDPAState, nc, nc);
struct vhost_vdpa *v = &s->vhost_vdpa;
@ -977,26 +1041,34 @@ static int vhost_vdpa_net_load(NetClientState *nc)
assert(nc->info->type == NET_CLIENT_DRIVER_VHOST_VDPA);
if (!v->shadow_vqs_enabled) {
return 0;
vhost_vdpa_set_vring_ready(v, v->dev->vq_index);
if (v->shadow_vqs_enabled) {
n = VIRTIO_NET(v->dev->vdev);
r = vhost_vdpa_net_load_mac(s, n);
if (unlikely(r < 0)) {
return r;
}
r = vhost_vdpa_net_load_mq(s, n);
if (unlikely(r)) {
return r;
}
r = vhost_vdpa_net_load_offloads(s, n);
if (unlikely(r)) {
return r;
}
r = vhost_vdpa_net_load_rx(s, n);
if (unlikely(r)) {
return r;
}
r = vhost_vdpa_net_load_vlan(s, n);
if (unlikely(r)) {
return r;
}
}
n = VIRTIO_NET(v->dev->vdev);
r = vhost_vdpa_net_load_mac(s, n);
if (unlikely(r < 0)) {
return r;
}
r = vhost_vdpa_net_load_mq(s, n);
if (unlikely(r)) {
return r;
}
r = vhost_vdpa_net_load_offloads(s, n);
if (unlikely(r)) {
return r;
}
r = vhost_vdpa_net_load_rx(s, n);
if (unlikely(r)) {
return r;
for (int i = 0; i < v->dev->vq_index; ++i) {
vhost_vdpa_set_vring_ready(v, i);
}
return 0;
@ -1007,7 +1079,7 @@ static NetClientInfo net_vhost_vdpa_cvq_info = {
.size = sizeof(VhostVDPAState),
.receive = vhost_vdpa_receive,
.start = vhost_vdpa_net_cvq_start,
.load = vhost_vdpa_net_load,
.load = vhost_vdpa_net_cvq_load,
.stop = vhost_vdpa_net_cvq_stop,
.cleanup = vhost_vdpa_cleanup,
.has_vnet_hdr = vhost_vdpa_has_vnet_hdr,
@ -1273,8 +1345,7 @@ static int vhost_vdpa_probe_cvq_isolation(int device_fd, uint64_t features,
uint64_t backend_features;
int64_t cvq_group;
uint8_t status = VIRTIO_CONFIG_S_ACKNOWLEDGE |
VIRTIO_CONFIG_S_DRIVER |
VIRTIO_CONFIG_S_FEATURES_OK;
VIRTIO_CONFIG_S_DRIVER;
int r;
ERRP_GUARD();
@ -1289,14 +1360,22 @@ static int vhost_vdpa_probe_cvq_isolation(int device_fd, uint64_t features,
return 0;
}
r = ioctl(device_fd, VHOST_SET_FEATURES, &features);
if (unlikely(r)) {
error_setg_errno(errp, errno, "Cannot set features");
}
r = ioctl(device_fd, VHOST_VDPA_SET_STATUS, &status);
if (unlikely(r)) {
error_setg_errno(errp, -r, "Cannot set device features");
error_setg_errno(errp, -r, "Cannot set device status");
goto out;
}
r = ioctl(device_fd, VHOST_SET_FEATURES, &features);
if (unlikely(r)) {
error_setg_errno(errp, -r, "Cannot set features");
goto out;
}
status |= VIRTIO_CONFIG_S_FEATURES_OK;
r = ioctl(device_fd, VHOST_VDPA_SET_STATUS, &status);
if (unlikely(r)) {
error_setg_errno(errp, -r, "Cannot set device status");
goto out;
}
@ -1355,7 +1434,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer,
VhostVDPAState *s;
int ret = 0;
assert(name);
int cvq_isolated;
int cvq_isolated = 0;
if (is_datapath) {
nc = qemu_new_net_client(&net_vhost_vdpa_info, peer, device,
@ -1395,18 +1474,6 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer,
s->vhost_vdpa.shadow_vq_ops = &vhost_vdpa_net_svq_ops;
s->vhost_vdpa.shadow_vq_ops_opaque = s;
s->cvq_isolated = cvq_isolated;
/*
* TODO: We cannot migrate devices with CVQ and no x-svq enabled as
* there is no way to set the device state (MAC, MQ, etc) before
* starting the datapath.
*
* Migration blocker ownership now belongs to s->vhost_vdpa.
*/
if (!svq) {
error_setg(&s->vhost_vdpa.migration_blocker,
"net vdpa cannot migrate with CVQ feature");
}
}
ret = vhost_vdpa_add(nc, (void *)&s->vhost_vdpa, queue_pair_index, nvqs);
if (ret) {

121
subprojects/libvhost-user/libvhost-user.c
View File

@ -161,6 +161,7 @@ vu_request_to_string(unsigned int req)
REQ(VHOST_USER_GET_MAX_MEM_SLOTS),
REQ(VHOST_USER_ADD_MEM_REG),
REQ(VHOST_USER_REM_MEM_REG),
REQ(VHOST_USER_GET_SHARED_OBJECT),
REQ(VHOST_USER_MAX),
};
#undef REQ
@ -322,6 +323,7 @@ vu_message_read_default(VuDev *dev, int conn_fd, VhostUserMsg *vmsg)
if (cmsg->cmsg_level == SOL_SOCKET && cmsg->cmsg_type == SCM_RIGHTS) {
fd_size = cmsg->cmsg_len - CMSG_LEN(0);
vmsg->fd_num = fd_size / sizeof(int);
assert(fd_size < VHOST_MEMORY_BASELINE_NREGIONS);
memcpy(vmsg->fds, CMSG_DATA(cmsg), fd_size);
break;
}
@ -900,6 +902,24 @@ vu_rem_mem_reg(VuDev *dev, VhostUserMsg *vmsg) {
return false;
}
static bool
vu_get_shared_object(VuDev *dev, VhostUserMsg *vmsg)
{
int fd_num = 0;
int dmabuf_fd = -1;
if (dev->iface->get_shared_object) {
dmabuf_fd = dev->iface->get_shared_object(
dev, &vmsg->payload.object.uuid[0]);
}
if (dmabuf_fd != -1) {
DPRINT("dmabuf_fd found for requested UUID\n");
vmsg->fds[fd_num++] = dmabuf_fd;
}
vmsg->fd_num = fd_num;
return true;
}
static bool
vu_set_mem_table_exec_postcopy(VuDev *dev, VhostUserMsg *vmsg)
{
@ -1403,6 +1423,105 @@ bool vu_set_queue_host_notifier(VuDev *dev, VuVirtq *vq, int fd,
return vu_process_message_reply(dev, &vmsg);
}
bool
vu_lookup_shared_object(VuDev *dev, unsigned char uuid[UUID_LEN],
int *dmabuf_fd)
{
bool result = false;
VhostUserMsg msg_reply;
VhostUserMsg msg = {
.request = VHOST_USER_BACKEND_SHARED_OBJECT_LOOKUP,
.size = sizeof(msg.payload.object),
.flags = VHOST_USER_VERSION | VHOST_USER_NEED_REPLY_MASK,
};
memcpy(msg.payload.object.uuid, uuid, sizeof(uuid[0]) * UUID_LEN);
if (!vu_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_SHARED_OBJECT)) {
return false;
}
pthread_mutex_lock(&dev->backend_mutex);
if (!vu_message_write(dev, dev->backend_fd, &msg)) {
goto out;
}
if (!vu_message_read_default(dev, dev->backend_fd, &msg_reply)) {
goto out;
}
if (msg_reply.request != msg.request) {
DPRINT("Received unexpected msg type. Expected %d, received %d",
msg.request, msg_reply.request);
goto out;
}
if (msg_reply.fd_num != 1) {
DPRINT("Received unexpected number of fds. Expected 1, received %d",
msg_reply.fd_num);
goto out;
}
*dmabuf_fd = msg_reply.fds[0];
result = *dmabuf_fd > 0 && msg_reply.payload.u64 == 0;
out:
pthread_mutex_unlock(&dev->backend_mutex);
return result;
}
static bool
vu_send_message(VuDev *dev, VhostUserMsg *vmsg)
{
bool result = false;
pthread_mutex_lock(&dev->backend_mutex);
if (!vu_message_write(dev, dev->backend_fd, vmsg)) {
goto out;
}
result = true;
out:
pthread_mutex_unlock(&dev->backend_mutex);
return result;
}
bool
vu_add_shared_object(VuDev *dev, unsigned char uuid[UUID_LEN])
{
VhostUserMsg msg = {
.request = VHOST_USER_BACKEND_SHARED_OBJECT_ADD,
.size = sizeof(msg.payload.object),
.flags = VHOST_USER_VERSION,
};
memcpy(msg.payload.object.uuid, uuid, sizeof(uuid[0]) * UUID_LEN);
if (!vu_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_SHARED_OBJECT)) {
return false;
}
return vu_send_message(dev, &msg);
}
bool
vu_rm_shared_object(VuDev *dev, unsigned char uuid[UUID_LEN])
{
VhostUserMsg msg = {
.request = VHOST_USER_BACKEND_SHARED_OBJECT_REMOVE,
.size = sizeof(msg.payload.object),
.flags = VHOST_USER_VERSION,
};
memcpy(msg.payload.object.uuid, uuid, sizeof(uuid[0]) * UUID_LEN);
if (!vu_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_SHARED_OBJECT)) {
return false;
}
return vu_send_message(dev, &msg);
}
static bool
vu_set_vring_call_exec(VuDev *dev, VhostUserMsg *vmsg)
{
@ -1943,6 +2062,8 @@ vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
return vu_add_mem_reg(dev, vmsg);
case VHOST_USER_REM_MEM_REG:
return vu_rem_mem_reg(dev, vmsg);
case VHOST_USER_GET_SHARED_OBJECT:
return vu_get_shared_object(dev, vmsg);
default:
vmsg_close_fds(vmsg);
vu_panic(dev, "Unhandled request: %d", vmsg->request);

55
subprojects/libvhost-user/libvhost-user.h
View File

@ -64,7 +64,8 @@ enum VhostUserProtocolFeature {
VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD = 12,
VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS = 14,
VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS = 15,
/* Feature 16 is reserved for VHOST_USER_PROTOCOL_F_STATUS. */
VHOST_USER_PROTOCOL_F_SHARED_OBJECT = 17,
VHOST_USER_PROTOCOL_F_MAX
};
@ -109,6 +110,7 @@ typedef enum VhostUserRequest {
VHOST_USER_GET_MAX_MEM_SLOTS = 36,
VHOST_USER_ADD_MEM_REG = 37,
VHOST_USER_REM_MEM_REG = 38,
VHOST_USER_GET_SHARED_OBJECT = 41,
VHOST_USER_MAX
} VhostUserRequest;
@ -119,6 +121,9 @@ typedef enum VhostUserBackendRequest {
VHOST_USER_BACKEND_VRING_HOST_NOTIFIER_MSG = 3,
VHOST_USER_BACKEND_VRING_CALL = 4,
VHOST_USER_BACKEND_VRING_ERR = 5,
VHOST_USER_BACKEND_SHARED_OBJECT_ADD = 6,
VHOST_USER_BACKEND_SHARED_OBJECT_REMOVE = 7,
VHOST_USER_BACKEND_SHARED_OBJECT_LOOKUP = 8,
VHOST_USER_BACKEND_MAX
} VhostUserBackendRequest;
@ -172,6 +177,12 @@ typedef struct VhostUserInflight {
uint16_t queue_size;
} VhostUserInflight;
#define UUID_LEN 16
typedef struct VhostUserShared {
unsigned char uuid[UUID_LEN];
} VhostUserShared;
#if defined(_WIN32) && (defined(__x86_64__) || defined(__i386__))
# define VU_PACKED __attribute__((gcc_struct, packed))
#else
@ -199,6 +210,7 @@ typedef struct VhostUserMsg {
VhostUserConfig config;
VhostUserVringArea area;
VhostUserInflight inflight;
VhostUserShared object;
} payload;
int fds[VHOST_MEMORY_BASELINE_NREGIONS];
@ -232,6 +244,7 @@ typedef int (*vu_get_config_cb) (VuDev *dev, uint8_t *config, uint32_t len);
typedef int (*vu_set_config_cb) (VuDev *dev, const uint8_t *data,
uint32_t offset, uint32_t size,
uint32_t flags);
typedef int (*vu_get_shared_object_cb) (VuDev *dev, const unsigned char *uuid);
typedef struct VuDevIface {
/* called by VHOST_USER_GET_FEATURES to get the features bitmask */
@ -258,6 +271,8 @@ typedef struct VuDevIface {
vu_get_config_cb get_config;
/* set the config space of the device */
vu_set_config_cb set_config;
/* get virtio shared object from the underlying vhost implementation. */
vu_get_shared_object_cb get_shared_object;
} VuDevIface;
typedef void (*vu_queue_handler_cb) (VuDev *dev, int qidx);
@ -541,6 +556,44 @@ void vu_set_queue_handler(VuDev *dev, VuVirtq *vq,
bool vu_set_queue_host_notifier(VuDev *dev, VuVirtq *vq, int fd,
int size, int offset);
/**
* vu_lookup_shared_object:
* @dev: a VuDev context
* @uuid: UUID of the shared object
* @dmabuf_fd: output dma-buf file descriptor
*
* Lookup for a virtio shared object (i.e., dma-buf fd) associated with the
* received UUID. Result, if found, is stored in the dmabuf_fd argument.
*
* Returns: whether the virtio object was found.
*/
bool vu_lookup_shared_object(VuDev *dev, unsigned char uuid[UUID_LEN],
int *dmabuf_fd);
/**
* vu_add_shared_object:
* @dev: a VuDev context
* @uuid: UUID of the shared object
*
* Registers this back-end as the exporter for the object associated with
* the received UUID.
*
* Returns: TRUE on success, FALSE on failure.
*/
bool vu_add_shared_object(VuDev *dev, unsigned char uuid[UUID_LEN]);
/**
* vu_rm_shared_object:
* @dev: a VuDev context
* @uuid: UUID of the shared object
*
* Removes a shared object entry (i.e., back-end entry) associated with the
* received UUID key from the hash table.
*
* Returns: TRUE on success, FALSE on failure.
*/
bool vu_rm_shared_object(VuDev *dev, unsigned char uuid[UUID_LEN]);
/**
* vu_queue_set_notification:
* @dev: a VuDev context

26
tests/qtest/bios-tables-test.c
View File

@ -2080,7 +2080,6 @@ int main(int argc, char *argv[])
test_acpi_piix4_no_acpi_pci_hotplug);
qtest_add_func("acpi/piix4/ipmi", test_acpi_piix4_tcg_ipmi);
qtest_add_func("acpi/piix4/cpuhp", test_acpi_piix4_tcg_cphp);
qtest_add_func("acpi/piix4/memhp", test_acpi_piix4_tcg_memhp);
qtest_add_func("acpi/piix4/numamem", test_acpi_piix4_tcg_numamem);
qtest_add_func("acpi/piix4/nosmm", test_acpi_piix4_tcg_nosmm);
qtest_add_func("acpi/piix4/smm-compat",
@ -2088,9 +2087,15 @@ int main(int argc, char *argv[])
qtest_add_func("acpi/piix4/smm-compat-nosmm",
test_acpi_piix4_tcg_smm_compat_nosmm);
qtest_add_func("acpi/piix4/nohpet", test_acpi_piix4_tcg_nohpet);
qtest_add_func("acpi/piix4/dimmpxm", test_acpi_piix4_tcg_dimm_pxm);
qtest_add_func("acpi/piix4/acpihmat",
test_acpi_piix4_tcg_acpi_hmat);
/* i386 does not support memory hotplug */
if (strcmp(arch, "i386")) {
qtest_add_func("acpi/piix4/memhp", test_acpi_piix4_tcg_memhp);
qtest_add_func("acpi/piix4/dimmpxm",
test_acpi_piix4_tcg_dimm_pxm);
qtest_add_func("acpi/piix4/acpihmat",
test_acpi_piix4_tcg_acpi_hmat);
}
#ifdef CONFIG_POSIX
qtest_add_func("acpi/piix4/acpierst", test_acpi_piix4_acpi_erst);
#endif
@ -2108,11 +2113,9 @@ int main(int argc, char *argv[])
test_acpi_q35_tcg_no_acpi_hotplug);
qtest_add_func("acpi/q35/multif-bridge",
test_acpi_q35_multif_bridge);
qtest_add_func("acpi/q35/mmio64", test_acpi_q35_tcg_mmio64);
qtest_add_func("acpi/q35/ipmi", test_acpi_q35_tcg_ipmi);
qtest_add_func("acpi/q35/smbus/ipmi", test_acpi_q35_tcg_smbus_ipmi);
qtest_add_func("acpi/q35/cpuhp", test_acpi_q35_tcg_cphp);
qtest_add_func("acpi/q35/memhp", test_acpi_q35_tcg_memhp);
qtest_add_func("acpi/q35/numamem", test_acpi_q35_tcg_numamem);
qtest_add_func("acpi/q35/nosmm", test_acpi_q35_tcg_nosmm);
qtest_add_func("acpi/q35/smm-compat",
@ -2120,10 +2123,17 @@ int main(int argc, char *argv[])
qtest_add_func("acpi/q35/smm-compat-nosmm",
test_acpi_q35_tcg_smm_compat_nosmm);
qtest_add_func("acpi/q35/nohpet", test_acpi_q35_tcg_nohpet);
qtest_add_func("acpi/q35/dimmpxm", test_acpi_q35_tcg_dimm_pxm);
qtest_add_func("acpi/q35/acpihmat", test_acpi_q35_tcg_acpi_hmat);
qtest_add_func("acpi/q35/acpihmat-noinitiator",
test_acpi_q35_tcg_acpi_hmat_noinitiator);
/* i386 does not support memory hotplug */
if (strcmp(arch, "i386")) {
qtest_add_func("acpi/q35/memhp", test_acpi_q35_tcg_memhp);
qtest_add_func("acpi/q35/dimmpxm", test_acpi_q35_tcg_dimm_pxm);
qtest_add_func("acpi/q35/acpihmat",
test_acpi_q35_tcg_acpi_hmat);
qtest_add_func("acpi/q35/mmio64", test_acpi_q35_tcg_mmio64);
}
#ifdef CONFIG_POSIX
qtest_add_func("acpi/q35/acpierst", test_acpi_q35_acpi_erst);
#endif

7
tests/qtest/numa-test.c
View File

@ -568,7 +568,7 @@ int main(int argc, char **argv)
qtest_add_data_func("/numa/mon/cpus/partial", args, test_mon_partial);
qtest_add_data_func("/numa/qmp/cpus/query-cpus", args, test_query_cpus);
if (!strcmp(arch, "i386") || !strcmp(arch, "x86_64")) {
if (!strcmp(arch, "x86_64")) {
qtest_add_data_func("/numa/pc/cpu/explicit", args, pc_numa_cpu);
qtest_add_data_func("/numa/pc/dynamic/cpu", args, pc_dynamic_cpu_cfg);
qtest_add_data_func("/numa/pc/hmat/build", args, pc_hmat_build_cfg);
@ -576,6 +576,11 @@ int main(int argc, char **argv)
qtest_add_data_func("/numa/pc/hmat/erange", args, pc_hmat_erange_cfg);
}
if (!strcmp(arch, "i386")) {
qtest_add_data_func("/numa/pc/cpu/explicit", args, pc_numa_cpu);
qtest_add_data_func("/numa/pc/dynamic/cpu", args, pc_dynamic_cpu_cfg);
}
if (!strcmp(arch, "ppc64")) {
qtest_add_data_func("/numa/spapr/cpu/explicit", args, spapr_numa_cpu);
}

1
tests/unit/meson.build
View File

@ -50,6 +50,7 @@ tests = {
'test-qapi-util': [],
'test-interval-tree': [],
'test-xs-node': [qom],
'test-virtio-dmabuf': [meson.project_source_root() / 'hw/display/virtio-dmabuf.c'],
}
if have_system or have_tools

27
tests/unit/test-uuid.c
View File

@ -171,6 +171,32 @@ static void test_uuid_unparse_strdup(void)
}
}
static void test_uuid_hash(void)
{
QemuUUID uuid;
int i;
for (i = 0; i < 100; i++) {
qemu_uuid_generate(&uuid);
/* Obtain the UUID hash */
uint32_t hash_a = qemu_uuid_hash(&uuid);
int data_idx = g_random_int_range(0, 15);
/* Change a single random byte of the UUID */
if (uuid.data[data_idx] < 0xFF) {
uuid.data[data_idx]++;
} else {
uuid.data[data_idx]--;
}
/* Obtain the UUID hash again */
uint32_t hash_b = qemu_uuid_hash(&uuid);
/*
* Both hashes shall be different (avoid collision)
* for any change in the UUID fields
*/
g_assert_cmpint(hash_a, !=, hash_b);
}
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
@ -179,6 +205,7 @@ int main(int argc, char **argv)
g_test_add_func("/uuid/parse", test_uuid_parse);
g_test_add_func("/uuid/unparse", test_uuid_unparse);
g_test_add_func("/uuid/unparse_strdup", test_uuid_unparse_strdup);
g_test_add_func("/uuid/hash", test_uuid_hash);
return g_test_run();
}

137
tests/unit/test-virtio-dmabuf.c Normal file
View File

@ -0,0 +1,137 @@
/*
* QEMU tests for shared dma-buf API
*
* Copyright (c) 2023 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "qemu/osdep.h"
#include "hw/virtio/virtio-dmabuf.h"
static void test_add_remove_resources(void)
{
QemuUUID uuid;
int i, dmabuf_fd;
for (i = 0; i < 100; ++i) {
qemu_uuid_generate(&uuid);
dmabuf_fd = g_random_int_range(3, 500);
/* Add a new resource */
g_assert(virtio_add_dmabuf(&uuid, dmabuf_fd));
g_assert_cmpint(virtio_lookup_dmabuf(&uuid), ==, dmabuf_fd);
/* Remove the resource */
g_assert(virtio_remove_resource(&uuid));
/* Resource is not found anymore */
g_assert_cmpint(virtio_lookup_dmabuf(&uuid), ==, -1);
}
}
static void test_add_remove_dev(void)
{
QemuUUID uuid;
struct vhost_dev *dev = g_new0(struct vhost_dev, 1);
int i;
for (i = 0; i < 100; ++i) {
qemu_uuid_generate(&uuid);
virtio_add_vhost_device(&uuid, dev);
/* vhost device is found */
g_assert(virtio_lookup_vhost_device(&uuid) != NULL);
/* Remove the vhost device */
g_assert(virtio_remove_resource(&uuid));
/* vhost device is not found anymore */
g_assert(virtio_lookup_vhost_device(&uuid) == NULL);
}
g_free(dev);
}
static void test_remove_invalid_resource(void)
{
QemuUUID uuid;
int i;
for (i = 0; i < 20; ++i) {
qemu_uuid_generate(&uuid);
g_assert_cmpint(virtio_lookup_dmabuf(&uuid), ==, -1);
/* Removing a resource that does not exist returns false */
g_assert_false(virtio_remove_resource(&uuid));
}
}
static void test_add_invalid_resource(void)
{
QemuUUID uuid;
struct vhost_dev *dev = NULL;
int i, dmabuf_fd = -2, alt_dmabuf = 2;
for (i = 0; i < 20; ++i) {
qemu_uuid_generate(&uuid);
/* Add a new resource with invalid (negative) resource fd */
g_assert_false(virtio_add_dmabuf(&uuid, dmabuf_fd));
/* Resource is not found */
g_assert_cmpint(virtio_lookup_dmabuf(&uuid), ==, -1);
/* Add a new vhost device with invalid (NULL) pointer */
g_assert_false(virtio_add_vhost_device(&uuid, dev));
/* vhost device is not found */
g_assert(virtio_lookup_vhost_device(&uuid) == NULL);
}
for (i = 0; i < 20; ++i) {
/* Add a valid resource */
qemu_uuid_generate(&uuid);
dmabuf_fd = g_random_int_range(3, 500);
g_assert(virtio_add_dmabuf(&uuid, dmabuf_fd));
g_assert_cmpint(virtio_lookup_dmabuf(&uuid), ==, dmabuf_fd);
/* Add a new resource with repeated uuid returns false */
g_assert_false(virtio_add_dmabuf(&uuid, alt_dmabuf));
/* The value for the uuid key is not replaced */
g_assert_cmpint(virtio_lookup_dmabuf(&uuid), ==, dmabuf_fd);
}
}
static void test_free_resources(void)
{
QemuUUID uuids[20];
int i, dmabuf_fd;
for (i = 0; i < ARRAY_SIZE(uuids); ++i) {
qemu_uuid_generate(&uuids[i]);
dmabuf_fd = g_random_int_range(3, 500);
g_assert(virtio_add_dmabuf(&uuids[i], dmabuf_fd));
g_assert_cmpint(virtio_lookup_dmabuf(&uuids[i]), ==, dmabuf_fd);
}
virtio_free_resources();
for (i = 0; i < ARRAY_SIZE(uuids); ++i) {
/* None of the resources is found after free'd */
g_assert_cmpint(virtio_lookup_dmabuf(&uuids[i]), ==, -1);
}
}
int main(int argc, char **argv)
{
g_test_init(&argc, &argv, NULL);
g_test_add_func("/virtio-dmabuf/add_rm_res", test_add_remove_resources);
g_test_add_func("/virtio-dmabuf/add_rm_dev", test_add_remove_dev);
g_test_add_func("/virtio-dmabuf/rm_invalid_res",
test_remove_invalid_resource);
g_test_add_func("/virtio-dmabuf/add_invalid_res",
test_add_invalid_resource);
g_test_add_func("/virtio-dmabuf/free_res", test_free_resources);
return g_test_run();
}

14
util/uuid.c
View File

@ -116,3 +116,17 @@ QemuUUID qemu_uuid_bswap(QemuUUID uuid)
bswap16s(&uuid.fields.time_high_and_version);
return uuid;
}
/* djb2 hash algorithm */
uint32_t qemu_uuid_hash(const void *uuid)
{
QemuUUID *qid = (QemuUUID *) uuid;
uint32_t h = 5381;
int i;
for (i = 0; i < ARRAY_SIZE(qid->data); i++) {
h = (h << 5) + h + qid->data[i];
}
return h;
}