mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
abb1565d3d
qemu/hw/virtio/virtio-qmp.c
Juraj Marcin 1f5f49056d virtio-mem: Add support for suspend+wake-up with plugged memory 
Before, the virtio-mem device would unplug all the memory with any reset
of the device, including during the wake-up of the guest from a
suspended state. Due to this, the virtio-mem driver in the Linux kernel
disallowed suspend-to-ram requests in the guest when the
VIRTIO_MEM_F_PERSISTENT_SUSPEND feature is not exposed by QEMU.

This patch adds the code to skip the reset on wake-up and exposes
theVIRTIO_MEM_F_PERSISTENT_SUSPEND feature to the guest kernel driver
when suspending is possible in QEMU (currently only x86).

Message-ID: <20240904103722.946194-5-jmarcin@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Juraj Marcin <jmarcin@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
2024-09-24 11:33:35 +02:00

841 lines
33 KiB
C
Raw Blame History

/*
* Virtio QMP helpers
*
* Copyright IBM, Corp. 2007
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "qemu/osdep.h"
#include "virtio-qmp.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-virtio.h"
#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"
#include "standard-headers/linux/virtio_blk.h"
#include "standard-headers/linux/virtio_console.h"
#include "standard-headers/linux/virtio_gpu.h"
#include "standard-headers/linux/virtio_net.h"
#include "standard-headers/linux/virtio_scsi.h"
#include "standard-headers/linux/virtio_i2c.h"
#include "standard-headers/linux/virtio_balloon.h"
#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 }
/* Virtio transport features mapping */
static const qmp_virtio_feature_map_t virtio_transport_map[] = {
/* Virtio device transport features */
#ifndef VIRTIO_CONFIG_NO_LEGACY
FEATURE_ENTRY(VIRTIO_F_NOTIFY_ON_EMPTY, \
"VIRTIO_F_NOTIFY_ON_EMPTY: Notify when device runs out of avail. "
"descs. on VQ"),
FEATURE_ENTRY(VIRTIO_F_ANY_LAYOUT, \
"VIRTIO_F_ANY_LAYOUT: Device accepts arbitrary desc. layouts"),
#endif /* !VIRTIO_CONFIG_NO_LEGACY */
FEATURE_ENTRY(VIRTIO_F_VERSION_1, \
"VIRTIO_F_VERSION_1: Device compliant for v1 spec (legacy)"),
FEATURE_ENTRY(VIRTIO_F_IOMMU_PLATFORM, \
"VIRTIO_F_IOMMU_PLATFORM: Device can be used on IOMMU platform"),
FEATURE_ENTRY(VIRTIO_F_RING_PACKED, \
"VIRTIO_F_RING_PACKED: Device supports packed VQ layout"),
FEATURE_ENTRY(VIRTIO_F_IN_ORDER, \
"VIRTIO_F_IN_ORDER: Device uses buffers in same order as made "
"available by driver"),
FEATURE_ENTRY(VIRTIO_F_ORDER_PLATFORM, \
"VIRTIO_F_ORDER_PLATFORM: Memory accesses ordered by platform"),
FEATURE_ENTRY(VIRTIO_F_SR_IOV, \
"VIRTIO_F_SR_IOV: Device supports single root I/O virtualization"),
FEATURE_ENTRY(VIRTIO_F_RING_RESET, \
"VIRTIO_F_RING_RESET: Driver can reset a queue individually"),
/* Virtio ring transport features */
FEATURE_ENTRY(VIRTIO_RING_F_INDIRECT_DESC, \
"VIRTIO_RING_F_INDIRECT_DESC: Indirect descriptors supported"),
FEATURE_ENTRY(VIRTIO_RING_F_EVENT_IDX, \
"VIRTIO_RING_F_EVENT_IDX: Used & avail. event fields enabled"),
{ -1, "" }
};
/* Vhost-user protocol features mapping */
static const qmp_virtio_feature_map_t vhost_user_protocol_map[] = {
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_MQ, \
"VHOST_USER_PROTOCOL_F_MQ: Multiqueue protocol supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_LOG_SHMFD, \
"VHOST_USER_PROTOCOL_F_LOG_SHMFD: Shared log memory fd supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_RARP, \
"VHOST_USER_PROTOCOL_F_RARP: Vhost-user back-end RARP broadcasting "
"supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_REPLY_ACK, \
"VHOST_USER_PROTOCOL_F_REPLY_ACK: Requested operation status ack. "
"supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_NET_MTU, \
"VHOST_USER_PROTOCOL_F_NET_MTU: Expose host MTU to guest supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_BACKEND_REQ, \
"VHOST_USER_PROTOCOL_F_BACKEND_REQ: Socket fd for back-end initiated "
"requests supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_CROSS_ENDIAN, \
"VHOST_USER_PROTOCOL_F_CROSS_ENDIAN: Endianness of VQs for legacy "
"devices supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_CRYPTO_SESSION, \
"VHOST_USER_PROTOCOL_F_CRYPTO_SESSION: Session creation for crypto "
"operations supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_PAGEFAULT, \
"VHOST_USER_PROTOCOL_F_PAGEFAULT: Request servicing on userfaultfd "
"for accessed pages supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_CONFIG, \
"VHOST_USER_PROTOCOL_F_CONFIG: Vhost-user messaging for virtio "
"device configuration space supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_BACKEND_SEND_FD, \
"VHOST_USER_PROTOCOL_F_BACKEND_SEND_FD: Backend fd communication "
"channel supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_HOST_NOTIFIER, \
"VHOST_USER_PROTOCOL_F_HOST_NOTIFIER: Host notifiers for specified "
"VQs supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD, \
"VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD: Shared inflight I/O buffers "
"supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_RESET_DEVICE, \
"VHOST_USER_PROTOCOL_F_RESET_DEVICE: Disabling all rings and "
"resetting internal device state supported"),
FEATURE_ENTRY(VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS, \
"VHOST_USER_PROTOCOL_F_INBAND_NOTIFICATIONS: In-band messaging "
"supported"),
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, "" }
};
/* virtio device configuration statuses */
static const qmp_virtio_feature_map_t virtio_config_status_map[] = {
FEATURE_ENTRY(VIRTIO_CONFIG_S_DRIVER_OK, \
"VIRTIO_CONFIG_S_DRIVER_OK: Driver setup and ready"),
FEATURE_ENTRY(VIRTIO_CONFIG_S_FEATURES_OK, \
"VIRTIO_CONFIG_S_FEATURES_OK: Feature negotiation complete"),
FEATURE_ENTRY(VIRTIO_CONFIG_S_DRIVER, \
"VIRTIO_CONFIG_S_DRIVER: Guest OS compatible with device"),
FEATURE_ENTRY(VIRTIO_CONFIG_S_NEEDS_RESET, \
"VIRTIO_CONFIG_S_NEEDS_RESET: Irrecoverable error, device needs "
"reset"),
FEATURE_ENTRY(VIRTIO_CONFIG_S_FAILED, \
"VIRTIO_CONFIG_S_FAILED: Error in guest, device failed"),
FEATURE_ENTRY(VIRTIO_CONFIG_S_ACKNOWLEDGE, \
"VIRTIO_CONFIG_S_ACKNOWLEDGE: Valid virtio device found"),
{ -1, "" }
};
/* virtio-blk features mapping */
#ifdef CONFIG_VIRTIO_BLK
static const qmp_virtio_feature_map_t virtio_blk_feature_map[] = {
FEATURE_ENTRY(VIRTIO_BLK_F_SIZE_MAX, \
"VIRTIO_BLK_F_SIZE_MAX: Max segment size is size_max"),
FEATURE_ENTRY(VIRTIO_BLK_F_SEG_MAX, \
"VIRTIO_BLK_F_SEG_MAX: Max segments in a request is seg_max"),
FEATURE_ENTRY(VIRTIO_BLK_F_GEOMETRY, \
"VIRTIO_BLK_F_GEOMETRY: Legacy geometry available"),
FEATURE_ENTRY(VIRTIO_BLK_F_RO, \
"VIRTIO_BLK_F_RO: Device is read-only"),
FEATURE_ENTRY(VIRTIO_BLK_F_BLK_SIZE, \
"VIRTIO_BLK_F_BLK_SIZE: Block size of disk available"),
FEATURE_ENTRY(VIRTIO_BLK_F_TOPOLOGY, \
"VIRTIO_BLK_F_TOPOLOGY: Topology information available"),
FEATURE_ENTRY(VIRTIO_BLK_F_MQ, \
"VIRTIO_BLK_F_MQ: Multiqueue supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_DISCARD, \
"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
FEATURE_ENTRY(VIRTIO_BLK_F_BARRIER, \
"VIRTIO_BLK_F_BARRIER: Request barriers supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_SCSI, \
"VIRTIO_BLK_F_SCSI: SCSI packet commands supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_FLUSH, \
"VIRTIO_BLK_F_FLUSH: Flush command supported"),
FEATURE_ENTRY(VIRTIO_BLK_F_CONFIG_WCE, \
"VIRTIO_BLK_F_CONFIG_WCE: Cache writeback and writethrough modes "
"supported"),
#endif /* !VIRTIO_BLK_NO_LEGACY */
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio-serial features mapping */
#ifdef CONFIG_VIRTIO_SERIAL
static const qmp_virtio_feature_map_t virtio_serial_feature_map[] = {
FEATURE_ENTRY(VIRTIO_CONSOLE_F_SIZE, \
"VIRTIO_CONSOLE_F_SIZE: Host providing console size"),
FEATURE_ENTRY(VIRTIO_CONSOLE_F_MULTIPORT, \
"VIRTIO_CONSOLE_F_MULTIPORT: Multiple ports for device supported"),
FEATURE_ENTRY(VIRTIO_CONSOLE_F_EMERG_WRITE, \
"VIRTIO_CONSOLE_F_EMERG_WRITE: Emergency write supported"),
{ -1, "" }
};
#endif
/* virtio-gpu features mapping */
#ifdef CONFIG_VIRTIO_GPU
static const qmp_virtio_feature_map_t virtio_gpu_feature_map[] = {
FEATURE_ENTRY(VIRTIO_GPU_F_VIRGL, \
"VIRTIO_GPU_F_VIRGL: Virgl 3D mode supported"),
FEATURE_ENTRY(VIRTIO_GPU_F_EDID, \
"VIRTIO_GPU_F_EDID: EDID metadata supported"),
FEATURE_ENTRY(VIRTIO_GPU_F_RESOURCE_UUID, \
"VIRTIO_GPU_F_RESOURCE_UUID: Resource UUID assigning supported"),
FEATURE_ENTRY(VIRTIO_GPU_F_RESOURCE_BLOB, \
"VIRTIO_GPU_F_RESOURCE_BLOB: Size-based blob resources supported"),
FEATURE_ENTRY(VIRTIO_GPU_F_CONTEXT_INIT, \
"VIRTIO_GPU_F_CONTEXT_INIT: Context types and synchronization "
"timelines supported"),
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio-input features mapping */
#ifdef CONFIG_VIRTIO_INPUT
static const qmp_virtio_feature_map_t virtio_input_feature_map[] = {
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio-net features mapping */
#ifdef CONFIG_VIRTIO_NET
static const qmp_virtio_feature_map_t virtio_net_feature_map[] = {
FEATURE_ENTRY(VIRTIO_NET_F_CSUM, \
"VIRTIO_NET_F_CSUM: Device handling packets with partial checksum "
"supported"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_CSUM, \
"VIRTIO_NET_F_GUEST_CSUM: Driver handling packets with partial "
"checksum supported"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, \
"VIRTIO_NET_F_CTRL_GUEST_OFFLOADS: Control channel offloading "
"reconfig. supported"),
FEATURE_ENTRY(VIRTIO_NET_F_MTU, \
"VIRTIO_NET_F_MTU: Device max MTU reporting supported"),
FEATURE_ENTRY(VIRTIO_NET_F_MAC, \
"VIRTIO_NET_F_MAC: Device has given MAC address"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_TSO4, \
"VIRTIO_NET_F_GUEST_TSO4: Driver can receive TSOv4"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_TSO6, \
"VIRTIO_NET_F_GUEST_TSO6: Driver can receive TSOv6"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_ECN, \
"VIRTIO_NET_F_GUEST_ECN: Driver can receive TSO with ECN"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_UFO, \
"VIRTIO_NET_F_GUEST_UFO: Driver can receive UFO"),
FEATURE_ENTRY(VIRTIO_NET_F_HOST_TSO4, \
"VIRTIO_NET_F_HOST_TSO4: Device can receive TSOv4"),
FEATURE_ENTRY(VIRTIO_NET_F_HOST_TSO6, \
"VIRTIO_NET_F_HOST_TSO6: Device can receive TSOv6"),
FEATURE_ENTRY(VIRTIO_NET_F_HOST_ECN, \
"VIRTIO_NET_F_HOST_ECN: Device can receive TSO with ECN"),
FEATURE_ENTRY(VIRTIO_NET_F_HOST_UFO, \
"VIRTIO_NET_F_HOST_UFO: Device can receive UFO"),
FEATURE_ENTRY(VIRTIO_NET_F_MRG_RXBUF, \
"VIRTIO_NET_F_MRG_RXBUF: Driver can merge receive buffers"),
FEATURE_ENTRY(VIRTIO_NET_F_STATUS, \
"VIRTIO_NET_F_STATUS: Configuration status field available"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_VQ, \
"VIRTIO_NET_F_CTRL_VQ: Control channel available"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_RX, \
"VIRTIO_NET_F_CTRL_RX: Control channel RX mode supported"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_VLAN, \
"VIRTIO_NET_F_CTRL_VLAN: Control channel VLAN filtering supported"),
FEATURE_ENTRY(VIRTIO_NET_F_CTRL_RX_EXTRA, \
"VIRTIO_NET_F_CTRL_RX_EXTRA: Extra RX mode control supported"),
FEATURE_ENTRY(VIRTIO_NET_F_GUEST_ANNOUNCE, \
"VIRTIO_NET_F_GUEST_ANNOUNCE: Driver sending gratuitous packets "
"supported"),
FEATURE_ENTRY(VIRTIO_NET_F_MQ, \
"VIRTIO_NET_F_MQ: Multiqueue with automatic receive steering "
"supported"),
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, \
"VIRTIO_NET_F_RSS: RSS RX steering supported"),
FEATURE_ENTRY(VIRTIO_NET_F_RSC_EXT, \
"VIRTIO_NET_F_RSC_EXT: Extended coalescing info supported"),
FEATURE_ENTRY(VIRTIO_NET_F_STANDBY, \
"VIRTIO_NET_F_STANDBY: Device acting as standby for primary "
"device with same MAC addr. supported"),
FEATURE_ENTRY(VIRTIO_NET_F_SPEED_DUPLEX, \
"VIRTIO_NET_F_SPEED_DUPLEX: Device set linkspeed and duplex"),
#ifndef VIRTIO_NET_NO_LEGACY
FEATURE_ENTRY(VIRTIO_NET_F_GSO, \
"VIRTIO_NET_F_GSO: Handling GSO-type packets supported"),
#endif /* !VIRTIO_NET_NO_LEGACY */
FEATURE_ENTRY(VHOST_NET_F_VIRTIO_NET_HDR, \
"VHOST_NET_F_VIRTIO_NET_HDR: Virtio-net headers for RX and TX "
"packets supported"),
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio-scsi features mapping */
#ifdef CONFIG_VIRTIO_SCSI
static const qmp_virtio_feature_map_t virtio_scsi_feature_map[] = {
FEATURE_ENTRY(VIRTIO_SCSI_F_INOUT, \
"VIRTIO_SCSI_F_INOUT: Requests including read and writable data "
"buffers supported"),
FEATURE_ENTRY(VIRTIO_SCSI_F_HOTPLUG, \
"VIRTIO_SCSI_F_HOTPLUG: Reporting and handling hot-plug events "
"supported"),
FEATURE_ENTRY(VIRTIO_SCSI_F_CHANGE, \
"VIRTIO_SCSI_F_CHANGE: Reporting and handling LUN changes "
"supported"),
FEATURE_ENTRY(VIRTIO_SCSI_F_T10_PI, \
"VIRTIO_SCSI_F_T10_PI: T10 info included in request header"),
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio/vhost-user-fs features mapping */
#ifdef CONFIG_VHOST_USER_FS
static const qmp_virtio_feature_map_t virtio_fs_feature_map[] = {
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio/vhost-user-i2c features mapping */
#ifdef CONFIG_VIRTIO_I2C_ADAPTER
static const qmp_virtio_feature_map_t virtio_i2c_feature_map[] = {
FEATURE_ENTRY(VIRTIO_I2C_F_ZERO_LENGTH_REQUEST, \
"VIRTIO_I2C_F_ZERO_LEGNTH_REQUEST: Zero length requests supported"),
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio/vhost-vsock features mapping */
#ifdef CONFIG_VHOST_VSOCK
static const qmp_virtio_feature_map_t virtio_vsock_feature_map[] = {
FEATURE_ENTRY(VIRTIO_VSOCK_F_SEQPACKET, \
"VIRTIO_VSOCK_F_SEQPACKET: SOCK_SEQPACKET supported"),
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#endif
/* virtio-balloon features mapping */
#ifdef CONFIG_VIRTIO_BALLOON
static const qmp_virtio_feature_map_t virtio_balloon_feature_map[] = {
FEATURE_ENTRY(VIRTIO_BALLOON_F_MUST_TELL_HOST, \
"VIRTIO_BALLOON_F_MUST_TELL_HOST: Tell host before reclaiming "
"pages"),
FEATURE_ENTRY(VIRTIO_BALLOON_F_STATS_VQ, \
"VIRTIO_BALLOON_F_STATS_VQ: Guest memory stats VQ available"),
FEATURE_ENTRY(VIRTIO_BALLOON_F_DEFLATE_ON_OOM, \
"VIRTIO_BALLOON_F_DEFLATE_ON_OOM: Deflate balloon when guest OOM"),
FEATURE_ENTRY(VIRTIO_BALLOON_F_FREE_PAGE_HINT, \
"VIRTIO_BALLOON_F_FREE_PAGE_HINT: VQ reporting free pages enabled"),
FEATURE_ENTRY(VIRTIO_BALLOON_F_PAGE_POISON, \
"VIRTIO_BALLOON_F_PAGE_POISON: Guest page poisoning enabled"),
FEATURE_ENTRY(VIRTIO_BALLOON_F_REPORTING, \
"VIRTIO_BALLOON_F_REPORTING: Page reporting VQ enabled"),
{ -1, "" }
};
#endif
/* virtio-crypto features mapping */
#ifdef CONFIG_VIRTIO_CRYPTO
static const qmp_virtio_feature_map_t virtio_crypto_feature_map[] = {
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
{ -1, "" }
};
#endif
/* virtio-iommu features mapping */
#ifdef CONFIG_VIRTIO_IOMMU
static const qmp_virtio_feature_map_t virtio_iommu_feature_map[] = {
FEATURE_ENTRY(VIRTIO_IOMMU_F_INPUT_RANGE, \
"VIRTIO_IOMMU_F_INPUT_RANGE: Range of available virtual addrs. "
"available"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_DOMAIN_RANGE, \
"VIRTIO_IOMMU_F_DOMAIN_RANGE: Number of supported domains "
"available"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_MAP_UNMAP, \
"VIRTIO_IOMMU_F_MAP_UNMAP: Map and unmap requests available"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_BYPASS, \
"VIRTIO_IOMMU_F_BYPASS: Endpoints not attached to domains are in "
"bypass mode"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_PROBE, \
"VIRTIO_IOMMU_F_PROBE: Probe requests available"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_MMIO, \
"VIRTIO_IOMMU_F_MMIO: VIRTIO_IOMMU_MAP_F_MMIO flag available"),
FEATURE_ENTRY(VIRTIO_IOMMU_F_BYPASS_CONFIG, \
"VIRTIO_IOMMU_F_BYPASS_CONFIG: Bypass field of IOMMU config "
"available"),
{ -1, "" }
};
#endif
/* virtio-mem features mapping */
#ifdef CONFIG_VIRTIO_MEM
static const qmp_virtio_feature_map_t virtio_mem_feature_map[] = {
#ifndef CONFIG_ACPI
FEATURE_ENTRY(VIRTIO_MEM_F_ACPI_PXM, \
"VIRTIO_MEM_F_ACPI_PXM: node_id is an ACPI PXM and is valid"),
#endif /* !CONFIG_ACPI */
FEATURE_ENTRY(VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE, \
"VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE: Unplugged memory cannot be "
"accessed"),
FEATURE_ENTRY(VIRTIO_MEM_F_PERSISTENT_SUSPEND, \
"VIRTIO_MEM_F_PERSISTENT_SUSPND: Plugged memory will remain "
"plugged when suspending+resuming"),
{ -1, "" }
};
#endif
/* virtio-rng features mapping */
#ifdef CONFIG_VIRTIO_RNG
static const qmp_virtio_feature_map_t virtio_rng_feature_map[] = {
FEATURE_ENTRY(VHOST_F_LOG_ALL, \
"VHOST_F_LOG_ALL: Logging write descriptors supported"),
FEATURE_ENTRY(VHOST_USER_F_PROTOCOL_FEATURES, \
"VHOST_USER_F_PROTOCOL_FEATURES: Vhost-user protocol features "
"negotiation supported"),
{ -1, "" }
};
#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; \
type *node; \
for (i = 0; map[i].virtio_bit != -1; i++) { \
if (is_status) { \
bit = map[i].virtio_bit; \
} \
else { \
bit = 1ULL << map[i].virtio_bit; \
} \
if ((bitmap & bit) == 0) { \
continue; \
} \
node = g_new0(type, 1); \
node->value = g_strdup(map[i].feature_desc); \
node->next = list; \
list = node; \
bitmap ^= bit; \
} \
list; \
})
VirtioDeviceStatus *qmp_decode_status(uint8_t bitmap)
{
VirtioDeviceStatus *status;
uint8_t bit;
int i;
status = g_new0(VirtioDeviceStatus, 1);
status->statuses = CONVERT_FEATURES(strList, virtio_config_status_map,
1, bitmap);
status->has_unknown_statuses = bitmap != 0;
if (status->has_unknown_statuses) {
status->unknown_statuses = bitmap;
}
return status;
}
VhostDeviceProtocols *qmp_decode_protocols(uint64_t bitmap)
{
VhostDeviceProtocols *vhu_protocols;
uint64_t bit;
int i;
vhu_protocols = g_new0(VhostDeviceProtocols, 1);
vhu_protocols->protocols =
CONVERT_FEATURES(strList,
vhost_user_protocol_map, 0, bitmap);
vhu_protocols->has_unknown_protocols = bitmap != 0;
if (vhu_protocols->has_unknown_protocols) {
vhu_protocols->unknown_protocols = bitmap;
}
return vhu_protocols;
}
VirtioDeviceFeatures *qmp_decode_features(uint16_t device_id, uint64_t bitmap)
{
VirtioDeviceFeatures *features;
uint64_t bit;
int i;
features = g_new0(VirtioDeviceFeatures, 1);
features->has_dev_features = true;
/* transport features */
features->transports = CONVERT_FEATURES(strList, virtio_transport_map, 0,
bitmap);
/* device features */
switch (device_id) {
#ifdef CONFIG_VIRTIO_SERIAL
case VIRTIO_ID_CONSOLE:
features->dev_features =
CONVERT_FEATURES(strList, virtio_serial_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_BLK
case VIRTIO_ID_BLOCK:
features->dev_features =
CONVERT_FEATURES(strList, virtio_blk_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_GPU
case VIRTIO_ID_GPU:
features->dev_features =
CONVERT_FEATURES(strList, virtio_gpu_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_NET
case VIRTIO_ID_NET:
features->dev_features =
CONVERT_FEATURES(strList, virtio_net_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_SCSI
case VIRTIO_ID_SCSI:
features->dev_features =
CONVERT_FEATURES(strList, virtio_scsi_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_BALLOON
case VIRTIO_ID_BALLOON:
features->dev_features =
CONVERT_FEATURES(strList, virtio_balloon_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_IOMMU
case VIRTIO_ID_IOMMU:
features->dev_features =
CONVERT_FEATURES(strList, virtio_iommu_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_INPUT
case VIRTIO_ID_INPUT:
features->dev_features =
CONVERT_FEATURES(strList, virtio_input_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VHOST_USER_FS
case VIRTIO_ID_FS:
features->dev_features =
CONVERT_FEATURES(strList, virtio_fs_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VHOST_VSOCK
case VIRTIO_ID_VSOCK:
features->dev_features =
CONVERT_FEATURES(strList, virtio_vsock_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_CRYPTO
case VIRTIO_ID_CRYPTO:
features->dev_features =
CONVERT_FEATURES(strList, virtio_crypto_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_MEM
case VIRTIO_ID_MEM:
features->dev_features =
CONVERT_FEATURES(strList, virtio_mem_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_I2C_ADAPTER
case VIRTIO_ID_I2C_ADAPTER:
features->dev_features =
CONVERT_FEATURES(strList, virtio_i2c_feature_map, 0, bitmap);
break;
#endif
#ifdef CONFIG_VIRTIO_RNG
case VIRTIO_ID_RNG:
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:
case VIRTIO_ID_PMEM:
case VIRTIO_ID_IOMEM:
case VIRTIO_ID_RPMSG:
case VIRTIO_ID_CLOCK:
case VIRTIO_ID_MAC80211_WLAN:
case VIRTIO_ID_MAC80211_HWSIM:
case VIRTIO_ID_RPROC_SERIAL:
case VIRTIO_ID_MEMORY_BALLOON:
case VIRTIO_ID_CAIF:
case VIRTIO_ID_SIGNAL_DIST:
case VIRTIO_ID_PSTORE:
case VIRTIO_ID_SOUND:
case VIRTIO_ID_BT:
case VIRTIO_ID_RPMB:
case VIRTIO_ID_VIDEO_ENCODER:
case VIRTIO_ID_VIDEO_DECODER:
case VIRTIO_ID_SCMI:
case VIRTIO_ID_NITRO_SEC_MOD:
case VIRTIO_ID_WATCHDOG:
case VIRTIO_ID_CAN:
case VIRTIO_ID_DMABUF:
case VIRTIO_ID_PARAM_SERV:
case VIRTIO_ID_AUDIO_POLICY:
break;
default:
g_assert_not_reached();
}
features->has_unknown_dev_features = bitmap != 0;
if (features->has_unknown_dev_features) {
features->unknown_dev_features = 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 *vdevs = NULL;
/* 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 vdevs;
}
VirtIODevice *qmp_find_virtio_device(const char *path)
{
/* 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 VIRTIO_DEVICE(dev);
}
VirtioStatus *qmp_x_query_virtio_status(const char *path, Error **errp)
{
VirtIODevice *vdev;
VirtioStatus *status;
vdev = qmp_find_virtio_device(path);
if (vdev == NULL) {
error_setg(errp, "Path %s is not a realized VirtIODevice", path);
return NULL;
}
status = g_new0(VirtioStatus, 1);
status->name = g_strdup(vdev->name);
status->device_id = vdev->device_id;
status->vhost_started = vdev->vhost_started;
status->guest_features = qmp_decode_features(vdev->device_id,
vdev->guest_features);
status->host_features = qmp_decode_features(vdev->device_id,
vdev->host_features);
status->backend_features = qmp_decode_features(vdev->device_id,
vdev->backend_features);
switch (vdev->device_endian) {
case VIRTIO_DEVICE_ENDIAN_LITTLE:
status->device_endian = g_strdup("little");
break;
case VIRTIO_DEVICE_ENDIAN_BIG:
status->device_endian = g_strdup("big");
break;
default:
status->device_endian = g_strdup("unknown");
break;
}
status->num_vqs = virtio_get_num_queues(vdev);
status->status = qmp_decode_status(vdev->status);
status->isr = vdev->isr;
status->queue_sel = vdev->queue_sel;
status->vm_running = vdev->vm_running;
status->broken = vdev->broken;
status->disabled = vdev->disabled;
status->use_started = vdev->use_started;
status->started = vdev->started;
status->start_on_kick = vdev->start_on_kick;
status->disable_legacy_check = vdev->disable_legacy_check;
status->bus_name = g_strdup(vdev->bus_name);
status->use_guest_notifier_mask = vdev->use_guest_notifier_mask;
if (vdev->vhost_started) {
VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
struct vhost_dev *hdev = vdc->get_vhost(vdev);
status->vhost_dev = g_new0(VhostStatus, 1);
status->vhost_dev->n_mem_sections = hdev->n_mem_sections;
status->vhost_dev->n_tmp_sections = hdev->n_tmp_sections;
status->vhost_dev->nvqs = hdev->nvqs;
status->vhost_dev->vq_index = hdev->vq_index;
status->vhost_dev->features =
qmp_decode_features(vdev->device_id, hdev->features);
status->vhost_dev->acked_features =
qmp_decode_features(vdev->device_id, hdev->acked_features);
status->vhost_dev->backend_features =
qmp_decode_features(vdev->device_id, hdev->backend_features);
status->vhost_dev->protocol_features =
qmp_decode_protocols(hdev->protocol_features);
status->vhost_dev->max_queues = hdev->max_queues;
status->vhost_dev->backend_cap = hdev->backend_cap;
status->vhost_dev->log_enabled = hdev->log_enabled;
status->vhost_dev->log_size = hdev->log_size;
}
return status;
}
VirtVhostQueueStatus *qmp_x_query_virtio_vhost_queue_status(const char *path,
uint16_t queue,
Error **errp)
{
VirtIODevice *vdev;
VirtVhostQueueStatus *status;
vdev = qmp_find_virtio_device(path);
if (vdev == NULL) {
error_setg(errp, "Path %s is not a VirtIODevice", path);
return NULL;
}
if (!vdev->vhost_started) {
error_setg(errp, "Error: vhost device has not started yet");
return NULL;
}
VirtioDeviceClass *vdc = VIRTIO_DEVICE_GET_CLASS(vdev);
struct vhost_dev *hdev = vdc->get_vhost(vdev);
if (queue < hdev->vq_index || queue >= hdev->vq_index + hdev->nvqs) {
error_setg(errp, "Invalid vhost virtqueue number %d", queue);
return NULL;
}
status = g_new0(VirtVhostQueueStatus, 1);
status->name = g_strdup(vdev->name);
status->kick = hdev->vqs[queue].kick;
status->call = hdev->vqs[queue].call;
status->desc = (uintptr_t)hdev->vqs[queue].desc;
status->avail = (uintptr_t)hdev->vqs[queue].avail;
status->used = (uintptr_t)hdev->vqs[queue].used;
status->num = hdev->vqs[queue].num;
status->desc_phys = hdev->vqs[queue].desc_phys;
status->desc_size = hdev->vqs[queue].desc_size;
status->avail_phys = hdev->vqs[queue].avail_phys;
status->avail_size = hdev->vqs[queue].avail_size;
status->used_phys = hdev->vqs[queue].used_phys;
status->used_size = hdev->vqs[queue].used_size;
return status;
}
Reference in New Issue View Git Blame Copy Permalink