mirror of https://github.com/ipxe/ipxe.git
[hyperv] Add support for VMBus devices
Add support for an abstraction of a VMBus device. Signed-off-by: Michael Brown <mcb30@ipxe.org>pull/33/head
Michael Brown
parent
d77a546fb4
commit
d1894970db
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@ -86,6 +86,7 @@ SRCDIRS += drivers/infiniband
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SRCDIRS += interface/pxe interface/efi interface/smbios
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SRCDIRS += interface/bofm
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SRCDIRS += interface/xen
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SRCDIRS += interface/hyperv
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SRCDIRS += tests
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SRCDIRS += crypto crypto/axtls crypto/matrixssl
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SRCDIRS += hci hci/commands hci/tui
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@ -38,6 +38,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
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#include <ipxe/cpuid.h>
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#include <ipxe/msr.h>
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#include <ipxe/hyperv.h>
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#include <ipxe/vmbus.h>
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#include "hyperv.h"
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/** Maximum time to wait for a message response
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@ -506,9 +507,15 @@ static int hv_probe ( struct root_device *rootdev ) {
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if ( ( rc = hv_map_synic ( hv ) ) != 0 )
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goto err_map_synic;
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/* Probe Hyper-V devices */
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if ( ( rc = vmbus_probe ( hv, &rootdev->dev ) ) != 0 )
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goto err_vmbus_probe;
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rootdev_set_drvdata ( rootdev, hv );
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return 0;
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vmbus_remove ( hv, &rootdev->dev );
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err_vmbus_probe:
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hv_unmap_synic ( hv );
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err_map_synic:
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hv_unmap_hypercall ( hv );
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@ -532,6 +539,7 @@ static int hv_probe ( struct root_device *rootdev ) {
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static void hv_remove ( struct root_device *rootdev ) {
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struct hv_hypervisor *hv = rootdev_get_drvdata ( rootdev );
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vmbus_remove ( hv, &rootdev->dev );
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hv_unmap_synic ( hv );
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hv_unmap_hypercall ( hv );
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hv_free_message ( hv );
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@ -63,6 +63,9 @@ struct device_description {
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/** Xen bus type */
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#define BUS_TYPE_XEN 8
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/** Hyper-V bus type */
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#define BUS_TYPE_HV 9
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/** A hardware device */
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struct device {
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/** Name */
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@ -309,6 +309,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
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#define ERRFILE_xengrant ( ERRFILE_OTHER | 0x00440000 )
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#define ERRFILE_efi_utils ( ERRFILE_OTHER | 0x00450000 )
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#define ERRFILE_efi_wrap ( ERRFILE_OTHER | 0x00460000 )
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#define ERRFILE_vmbus ( ERRFILE_OTHER | 0x00470000 )
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/** @} */
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@ -197,6 +197,8 @@ struct hv_hypervisor {
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struct hv_synic synic;
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/** Message buffer */
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union hv_message_buffer *message;
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/** Virtual machine bus */
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struct vmbus *vmbus;
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};
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#include <bits/hyperv.h>
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@ -0,0 +1,629 @@
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#ifndef _IPXE_VMBUS_H
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#define _IPXE_VMBUS_H
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/** @file
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*
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* Hyper-V virtual machine bus
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <byteswap.h>
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#include <ipxe/uuid.h>
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#include <ipxe/device.h>
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#include <ipxe/tables.h>
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#include <ipxe/uaccess.h>
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#include <ipxe/iobuf.h>
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#include <ipxe/hyperv.h>
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/** VMBus message connection ID */
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#define VMBUS_MESSAGE_ID 1
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/** VMBus event connection ID */
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#define VMBUS_EVENT_ID 2
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/** VMBus message type */
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#define VMBUS_MESSAGE_TYPE 1
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/** VMBus message synthetic interrupt */
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#define VMBUS_MESSAGE_SINT 2
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/** VMBus version number */
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union vmbus_version {
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/** Raw version */
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uint32_t raw;
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/** Major/minor version */
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struct {
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/** Minor version */
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uint16_t minor;
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/** Major version */
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uint16_t major;
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};
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} __attribute__ (( packed ));
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/** Oldest known VMBus protocol version (Windows Server 2008) */
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#define VMBUS_VERSION_WS2008 ( ( 0 << 16 ) | ( 13 << 0 ) )
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/** Guest physical address range descriptor */
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struct vmbus_gpa_range {
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/** Byte count */
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uint32_t len;
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/** Starting byte offset */
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uint32_t offset;
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/** Page frame numbers
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*
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* The length of this array is implied by the byte count and
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* starting offset.
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*/
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uint64_t pfn[0];
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} __attribute__ (( packed ));
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/** VMBus message header */
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struct vmbus_message_header {
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/** Message type */
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uint32_t type;
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/** Reserved */
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uint32_t reserved;
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} __attribute__ (( packed ));
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/** VMBus message types */
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enum vmbus_message_type {
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VMBUS_OFFER_CHANNEL = 1,
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VMBUS_REQUEST_OFFERS = 3,
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VMBUS_ALL_OFFERS_DELIVERED = 4,
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VMBUS_OPEN_CHANNEL = 5,
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VMBUS_OPEN_CHANNEL_RESULT = 6,
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VMBUS_CLOSE_CHANNEL = 7,
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VMBUS_GPADL_HEADER = 8,
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VMBUS_GPADL_CREATED = 10,
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VMBUS_GPADL_TEARDOWN = 11,
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VMBUS_GPADL_TORNDOWN = 12,
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VMBUS_INITIATE_CONTACT = 14,
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VMBUS_VERSION_RESPONSE = 15,
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VMBUS_UNLOAD = 16,
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};
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/** VMBus "offer channel" message */
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struct vmbus_offer_channel {
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/** Message header */
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struct vmbus_message_header header;
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/** Channel type */
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union uuid type;
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/** Channel instance */
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union uuid instance;
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/** Reserved */
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uint8_t reserved_a[16];
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/** Flags */
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uint16_t flags;
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/** Reserved */
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uint8_t reserved_b[2];
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/** User data */
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uint8_t data[120];
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/** Reserved */
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uint8_t reserved_c[4];
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/** Channel ID */
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uint32_t channel;
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/** Monitor ID */
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uint8_t monitor;
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/** Monitor exists */
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uint8_t monitored;
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/** Reserved */
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uint8_t reserved[2];
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/** Connection ID */
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uint32_t connection;
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} __attribute__ (( packed ));
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/** VMBus "open channel" message */
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struct vmbus_open_channel {
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/** Message header */
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struct vmbus_message_header header;
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/** Channel ID */
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uint32_t channel;
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/** Open ID */
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uint32_t id;
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/** Ring buffer GPADL ID */
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uint32_t gpadl;
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/** Reserved */
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uint32_t reserved;
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/** Outbound ring buffer size (in pages) */
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uint32_t out_pages;
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/** User-specific data */
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uint8_t data[120];
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} __attribute__ (( packed ));
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/** VMBus "open channel result" message */
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struct vmbus_open_channel_result {
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/** Message header */
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struct vmbus_message_header header;
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/** Channel ID */
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uint32_t channel;
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/** Open ID */
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uint32_t id;
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/** Status */
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uint32_t status;
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} __attribute__ (( packed ));
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/** VMBus "close channel" message */
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struct vmbus_close_channel {
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/** Message header */
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struct vmbus_message_header header;
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/** Channel ID */
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uint32_t channel;
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} __attribute__ (( packed ));
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/** VMBus "GPADL header" message */
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struct vmbus_gpadl_header {
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/** Message header */
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struct vmbus_message_header header;
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/** Channel ID */
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uint32_t channel;
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/** GPADL ID */
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uint32_t gpadl;
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/** Length of range descriptors */
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uint16_t range_len;
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/** Number of range descriptors */
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uint16_t range_count;
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/** Range descriptors */
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struct vmbus_gpa_range range[0];
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} __attribute__ (( packed ));
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/** VMBus "GPADL created" message */
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struct vmbus_gpadl_created {
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/** Message header */
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struct vmbus_message_header header;
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/** Channel ID */
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uint32_t channel;
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/** GPADL ID */
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uint32_t gpadl;
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/** Creation status */
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uint32_t status;
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} __attribute__ (( packed ));
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/** VMBus "GPADL teardown" message */
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struct vmbus_gpadl_teardown {
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/** Message header */
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struct vmbus_message_header header;
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/** Channel ID */
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uint32_t channel;
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/** GPADL ID */
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uint32_t gpadl;
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} __attribute__ (( packed ));
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/** VMBus "GPADL torndown" message */
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struct vmbus_gpadl_torndown {
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/** Message header */
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struct vmbus_message_header header;
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/** GPADL ID */
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uint32_t gpadl;
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} __attribute__ (( packed ));
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/** VMBus "initiate contact" message */
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struct vmbus_initiate_contact {
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/** Message header */
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struct vmbus_message_header header;
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/** Requested version */
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union vmbus_version version;
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/** Target virtual CPU */
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uint32_t vcpu;
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/** Interrupt page base address */
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uint64_t intr;
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/** Parent to child monitor page base address */
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uint64_t monitor_in;
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/** Child to parent monitor page base address */
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uint64_t monitor_out;
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} __attribute__ (( packed ));
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/** VMBus "version response" message */
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struct vmbus_version_response {
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/** Message header */
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struct vmbus_message_header header;
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/** Version is supported */
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uint8_t supported;
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/** Reserved */
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uint8_t reserved[3];
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/** Version */
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union vmbus_version version;
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} __attribute__ (( packed ));
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/** VMBus message */
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union vmbus_message {
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/** Common message header */
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struct vmbus_message_header header;
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/** "Offer channel" message */
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struct vmbus_offer_channel offer;
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/** "Open channel" message */
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struct vmbus_open_channel open;
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/** "Open channel result" message */
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struct vmbus_open_channel_result opened;
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/** "Close channel" message */
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struct vmbus_close_channel close;
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/** "GPADL header" message */
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struct vmbus_gpadl_header gpadlhdr;
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/** "GPADL created" message */
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struct vmbus_gpadl_created created;
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/** "GPADL teardown" message */
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struct vmbus_gpadl_teardown teardown;
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/** "GPADL torndown" message */
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struct vmbus_gpadl_torndown torndown;
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/** "Initiate contact" message */
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struct vmbus_initiate_contact initiate;
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/** "Version response" message */
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struct vmbus_version_response version;
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};
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/** VMBus packet header */
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struct vmbus_packet_header {
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/** Type */
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uint16_t type;
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/** Length of packet header (in quadwords) */
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uint16_t hdr_qlen;
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/** Length of packet (in quadwords) */
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uint16_t qlen;
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/** Flags */
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uint16_t flags;
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/** Transaction ID
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*
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* This is an opaque token: we therefore treat it as
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* native-endian and don't worry about byte-swapping.
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*/
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uint64_t xid;
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} __attribute__ (( packed ));
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/** VMBus packet types */
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enum vmbus_packet_type {
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VMBUS_DATA_INBAND = 6,
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VMBUS_DATA_XFER_PAGES = 7,
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VMBUS_DATA_GPA_DIRECT = 9,
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VMBUS_CANCELLATION = 10,
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VMBUS_COMPLETION = 11,
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};
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/** VMBus packet flags */
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enum vmbus_packet_flags {
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VMBUS_COMPLETION_REQUESTED = 0x0001,
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};
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/** VMBus GPA direct header */
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struct vmbus_gpa_direct_header {
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/** Packet header */
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struct vmbus_packet_header header;
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/** Reserved */
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uint32_t reserved;
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/** Number of range descriptors */
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uint32_t range_count;
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/** Range descriptors */
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struct vmbus_gpa_range range[0];
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} __attribute__ (( packed ));
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/** VMBus transfer page range */
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struct vmbus_xfer_page_range {
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/** Length */
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uint32_t len;
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/** Offset */
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uint32_t offset;
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} __attribute__ (( packed ));
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/** VMBus transfer page header */
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struct vmbus_xfer_page_header {
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/** Packet header */
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struct vmbus_packet_header header;
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/** Page set ID */
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uint16_t pageset;
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/** Sender owns page set */
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uint8_t owner;
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/** Reserved */
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uint8_t reserved;
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/** Number of range descriptors */
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uint32_t range_count;
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/** Range descriptors */
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struct vmbus_xfer_page_range range[0];
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} __attribute__ (( packed ));
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/** Maximum expected size of VMBus packet header */
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#define VMBUS_PACKET_MAX_HEADER_LEN 64
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/** VMBus maximum-sized packet header */
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union vmbus_packet_header_max {
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/** Common header */
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struct vmbus_packet_header header;
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/** GPA direct header */
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struct vmbus_gpa_direct_header gpa;
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/** Transfer page header */
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struct vmbus_xfer_page_header xfer;
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/** Padding to maximum supported size */
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uint8_t padding[VMBUS_PACKET_MAX_HEADER_LEN];
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} __attribute__ (( packed ));
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/** VMBus packet footer */
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struct vmbus_packet_footer {
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/** Reserved */
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uint32_t reserved;
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/** Producer index of the first byte of the packet */
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uint32_t prod;
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} __attribute__ (( packed ));
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/** VMBus ring buffer
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*
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* This is the structure of the each of the ring buffers created when
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* a VMBus channel is opened.
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*/
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struct vmbus_ring {
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/** Producer index (modulo ring length) */
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uint32_t prod;
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/** Consumer index (modulo ring length) */
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uint32_t cons;
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/** Interrupt mask */
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uint32_t intr_mask;
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/** Reserved */
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uint8_t reserved[4084];
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/** Ring buffer contents */
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uint8_t data[0];
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} __attribute__ (( packed ));
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/** VMBus interrupt page */
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struct vmbus_interrupt {
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/** Inbound interrupts */
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uint8_t in[ PAGE_SIZE / 2 ];
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/** Outbound interrupts */
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uint8_t out[ PAGE_SIZE / 2 ];
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} __attribute__ (( packed ));
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/** A virtual machine bus */
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struct vmbus {
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/** Interrupt page */
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struct vmbus_interrupt *intr;
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/** Inbound notifications */
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struct hv_monitor *monitor_in;
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/** Outbound notifications */
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struct hv_monitor *monitor_out;
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/** Received message buffer */
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const union vmbus_message *message;
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};
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struct vmbus_device;
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/** VMBus channel operations */
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struct vmbus_channel_operations {
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/**
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* Handle received control packet
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*
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* @v vmdev VMBus device
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* @v xid Transaction ID
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* @v data Data
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* @v len Length of data
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* @ret rc Return status code
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*/
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int ( * recv_control ) ( struct vmbus_device *vmdev, uint64_t xid,
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const void *data, size_t len );
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/**
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* Handle received data packet
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*
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* @v vmdev VMBus device
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* @v xid Transaction ID
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* @v data Data
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* @v len Length of data
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* @v iobuf I/O buffer, or NULL if allocation failed
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* @ret rc Return status code
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*
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* This function takes ownership of the I/O buffer. It should
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* eventually call vmbus_send_completion() to indicate to the
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* host that the buffer can be reused.
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*
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* Note that this function will be called even if we failed to
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* allocate or populate the I/O buffer; this is to allow for a
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* completion to be sent even in the event of a transient
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* memory shortage failure.
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*/
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int ( * recv_data ) ( struct vmbus_device *vmdev, uint64_t xid,
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const void *data, size_t len,
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struct io_buffer *iobuf );
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/**
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* Handle received completion packet
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*
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* @v vmdev VMBus device
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||||
* @v xid Transaction ID
|
||||
* @v data Data
|
||||
* @v len Length of data
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
int ( * recv_completion ) ( struct vmbus_device *vmdev, uint64_t xid,
|
||||
const void *data, size_t len );
|
||||
/**
|
||||
* Handle received cancellation packet
|
||||
*
|
||||
* @v vmdev VMBus device
|
||||
* @v xid Transaction ID
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
int ( * recv_cancellation ) ( struct vmbus_device *vmdev,
|
||||
uint64_t xid );
|
||||
};
|
||||
|
||||
struct vmbus_xfer_pages;
|
||||
|
||||
/** VMBus transfer page set operations */
|
||||
struct vmbus_xfer_pages_operations {
|
||||
/**
|
||||
* Copy data from transfer page
|
||||
*
|
||||
* @v pages Transfer page set
|
||||
* @v data Data buffer
|
||||
* @v offset Offset within page set
|
||||
* @v len Length within page set
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
int ( * copy ) ( struct vmbus_xfer_pages *pages, void *data,
|
||||
size_t offset, size_t len );
|
||||
};
|
||||
|
||||
/** VMBus transfer page set */
|
||||
struct vmbus_xfer_pages {
|
||||
/** List of all transfer page sets */
|
||||
struct list_head list;
|
||||
/** Page set ID (in protocol byte order) */
|
||||
uint16_t pageset;
|
||||
/** Page set operations */
|
||||
struct vmbus_xfer_pages_operations *op;
|
||||
};
|
||||
|
||||
/** A VMBus device */
|
||||
struct vmbus_device {
|
||||
/** Generic iPXE device */
|
||||
struct device dev;
|
||||
/** Hyper-V hypervisor */
|
||||
struct hv_hypervisor *hv;
|
||||
|
||||
/** Channel ID */
|
||||
unsigned int channel;
|
||||
/** Monitor ID */
|
||||
unsigned int monitor;
|
||||
/** Signal channel
|
||||
*
|
||||
* @v vmdev VMBus device
|
||||
*/
|
||||
void ( * signal ) ( struct vmbus_device *vmdev );
|
||||
|
||||
/** Outbound ring buffer length */
|
||||
uint32_t out_len;
|
||||
/** Inbound ring buffer length */
|
||||
uint32_t in_len;
|
||||
/** Outbound ring buffer */
|
||||
struct vmbus_ring *out;
|
||||
/** Inbound ring buffer */
|
||||
struct vmbus_ring *in;
|
||||
/** Ring buffer GPADL ID */
|
||||
unsigned int gpadl;
|
||||
|
||||
/** Channel operations */
|
||||
struct vmbus_channel_operations *op;
|
||||
/** Maximum expected data packet length */
|
||||
size_t mtu;
|
||||
/** Packet buffer */
|
||||
void *packet;
|
||||
/** List of transfer page sets */
|
||||
struct list_head pages;
|
||||
|
||||
/** Driver */
|
||||
struct vmbus_driver *driver;
|
||||
/** Driver-private data */
|
||||
void *priv;
|
||||
};
|
||||
|
||||
/** A VMBus device driver */
|
||||
struct vmbus_driver {
|
||||
/** Name */
|
||||
const char *name;
|
||||
/** Device type */
|
||||
union uuid type;
|
||||
/** Probe device
|
||||
*
|
||||
* @v vmdev VMBus device
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
int ( * probe ) ( struct vmbus_device *vmdev );
|
||||
/** Remove device
|
||||
*
|
||||
* @v vmdev VMBus device
|
||||
*/
|
||||
void ( * remove ) ( struct vmbus_device *vmdev );
|
||||
};
|
||||
|
||||
/** VMBus device driver table */
|
||||
#define VMBUS_DRIVERS __table ( struct vmbus_driver, "vmbus_drivers" )
|
||||
|
||||
/** Declare a VMBus device driver */
|
||||
#define __vmbus_driver __table_entry ( VMBUS_DRIVERS, 01 )
|
||||
|
||||
/**
|
||||
* Set VMBus device driver-private data
|
||||
*
|
||||
* @v vmdev VMBus device
|
||||
* @v priv Private data
|
||||
*/
|
||||
static inline void vmbus_set_drvdata ( struct vmbus_device *vmdev, void *priv ){
|
||||
vmdev->priv = priv;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get VMBus device driver-private data
|
||||
*
|
||||
* @v vmdev VMBus device
|
||||
* @ret priv Private data
|
||||
*/
|
||||
static inline void * vmbus_get_drvdata ( struct vmbus_device *vmdev ) {
|
||||
return vmdev->priv;
|
||||
}
|
||||
|
||||
/** Construct VMBus type */
|
||||
#define VMBUS_TYPE( a, b, c, d, e0, e1, e2, e3, e4, e5 ) { \
|
||||
.canonical = { \
|
||||
cpu_to_le32 ( a ), cpu_to_le16 ( b ), \
|
||||
cpu_to_le16 ( c ), cpu_to_be16 ( d ), \
|
||||
{ e0, e1, e2, e3, e4, e5 } \
|
||||
} }
|
||||
|
||||
/**
|
||||
* Check if data is present in ring buffer
|
||||
*
|
||||
* @v vmdev VMBus device
|
||||
* @v has_data Data is present
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) int
|
||||
vmbus_has_data ( struct vmbus_device *vmdev ) {
|
||||
|
||||
return ( vmdev->in->prod != vmdev->in->cons );
|
||||
}
|
||||
|
||||
/**
|
||||
* Register transfer page set
|
||||
*
|
||||
* @v vmdev VMBus device
|
||||
* @v pages Transfer page set
|
||||
* @ret rc Return status code
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) int
|
||||
vmbus_register_pages ( struct vmbus_device *vmdev,
|
||||
struct vmbus_xfer_pages *pages ) {
|
||||
|
||||
list_add ( &pages->list, &vmdev->pages );
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Unregister transfer page set
|
||||
*
|
||||
* @v vmdev VMBus device
|
||||
* @v pages Transfer page set
|
||||
*/
|
||||
static inline __attribute__ (( always_inline )) void
|
||||
vmbus_unregister_pages ( struct vmbus_device *vmdev,
|
||||
struct vmbus_xfer_pages *pages ) {
|
||||
|
||||
list_check_contains_entry ( pages, &vmdev->pages, list );
|
||||
list_del ( &pages->list );
|
||||
}
|
||||
|
||||
extern int vmbus_establish_gpadl ( struct vmbus_device *vmdev, userptr_t data,
|
||||
size_t len );
|
||||
extern int vmbus_gpadl_teardown ( struct vmbus_device *vmdev,
|
||||
unsigned int gpadl );
|
||||
extern int vmbus_open ( struct vmbus_device *vmdev,
|
||||
struct vmbus_channel_operations *op,
|
||||
size_t out_len, size_t in_len, size_t mtu );
|
||||
extern void vmbus_close ( struct vmbus_device *vmdev );
|
||||
extern int vmbus_send_control ( struct vmbus_device *vmdev, uint64_t xid,
|
||||
const void *data, size_t len );
|
||||
extern int vmbus_send_data ( struct vmbus_device *vmdev, uint64_t xid,
|
||||
const void *data, size_t len,
|
||||
struct io_buffer *iobuf );
|
||||
extern int vmbus_send_completion ( struct vmbus_device *vmdev, uint64_t xid,
|
||||
const void *data, size_t len );
|
||||
extern int vmbus_send_cancellation ( struct vmbus_device *vmdev, uint64_t xid );
|
||||
extern int vmbus_poll ( struct vmbus_device *vmdev );
|
||||
extern void vmbus_dump_channel ( struct vmbus_device *vmdev );
|
||||
|
||||
extern int vmbus_probe ( struct hv_hypervisor *hv, struct device *parent );
|
||||
extern void vmbus_remove ( struct hv_hypervisor *hv, struct device *parent );
|
||||
|
||||
#endif /* _IPXE_VMBUS_H */
|
||||
File diff suppressed because it is too large
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Reference in New Issue