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Subject[PATCH 154/206] Staging: hv: Include the contents of channel_mgmt.h
Date
The subject line says it all.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
---
include/linux/hyperv.h | 292 +++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 291 insertions(+), 1 deletions(-)

diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index d13d72a..932aafa 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -25,7 +25,297 @@
#ifndef _HYPERV_H
#define _HYPERV_H

-#include "channel_mgmt.h"
+
+#include <linux/list.h>
+#include <linux/timer.h>
+#include <linux/workqueue.h>
+#include <linux/completion.h>
+#include "ring_buffer.h"
+#include "vmbus_channel_interface.h"
+#include "vmbus_packet_format.h"
+
+/* Version 1 messages */
+enum vmbus_channel_message_type {
+ CHANNELMSG_INVALID = 0,
+ CHANNELMSG_OFFERCHANNEL = 1,
+ CHANNELMSG_RESCIND_CHANNELOFFER = 2,
+ CHANNELMSG_REQUESTOFFERS = 3,
+ CHANNELMSG_ALLOFFERS_DELIVERED = 4,
+ CHANNELMSG_OPENCHANNEL = 5,
+ CHANNELMSG_OPENCHANNEL_RESULT = 6,
+ CHANNELMSG_CLOSECHANNEL = 7,
+ CHANNELMSG_GPADL_HEADER = 8,
+ CHANNELMSG_GPADL_BODY = 9,
+ CHANNELMSG_GPADL_CREATED = 10,
+ CHANNELMSG_GPADL_TEARDOWN = 11,
+ CHANNELMSG_GPADL_TORNDOWN = 12,
+ CHANNELMSG_RELID_RELEASED = 13,
+ CHANNELMSG_INITIATE_CONTACT = 14,
+ CHANNELMSG_VERSION_RESPONSE = 15,
+ CHANNELMSG_UNLOAD = 16,
+#ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD
+ CHANNELMSG_VIEWRANGE_ADD = 17,
+ CHANNELMSG_VIEWRANGE_REMOVE = 18,
+#endif
+ CHANNELMSG_COUNT
+};
+
+struct vmbus_channel_message_header {
+ enum vmbus_channel_message_type msgtype;
+ u32 padding;
+} __packed;
+
+/* Query VMBus Version parameters */
+struct vmbus_channel_query_vmbus_version {
+ struct vmbus_channel_message_header header;
+ u32 version;
+} __packed;
+
+/* VMBus Version Supported parameters */
+struct vmbus_channel_version_supported {
+ struct vmbus_channel_message_header header;
+ bool version_supported;
+} __packed;
+
+/* Offer Channel parameters */
+struct vmbus_channel_offer_channel {
+ struct vmbus_channel_message_header header;
+ struct vmbus_channel_offer offer;
+ u32 child_relid;
+ u8 monitorid;
+ bool monitor_allocated;
+} __packed;
+
+/* Rescind Offer parameters */
+struct vmbus_channel_rescind_offer {
+ struct vmbus_channel_message_header header;
+ u32 child_relid;
+} __packed;
+
+/*
+ * Request Offer -- no parameters, SynIC message contains the partition ID
+ * Set Snoop -- no parameters, SynIC message contains the partition ID
+ * Clear Snoop -- no parameters, SynIC message contains the partition ID
+ * All Offers Delivered -- no parameters, SynIC message contains the partition
+ * ID
+ * Flush Client -- no parameters, SynIC message contains the partition ID
+ */
+
+/* Open Channel parameters */
+struct vmbus_channel_open_channel {
+ struct vmbus_channel_message_header header;
+
+ /* Identifies the specific VMBus channel that is being opened. */
+ u32 child_relid;
+
+ /* ID making a particular open request at a channel offer unique. */
+ u32 openid;
+
+ /* GPADL for the channel's ring buffer. */
+ u32 ringbuffer_gpadlhandle;
+
+ /* GPADL for the channel's server context save area. */
+ u32 server_contextarea_gpadlhandle;
+
+ /*
+ * The upstream ring buffer begins at offset zero in the memory
+ * described by RingBufferGpadlHandle. The downstream ring buffer
+ * follows it at this offset (in pages).
+ */
+ u32 downstream_ringbuffer_pageoffset;
+
+ /* User-specific data to be passed along to the server endpoint. */
+ unsigned char userdata[MAX_USER_DEFINED_BYTES];
+} __packed;
+
+/* Open Channel Result parameters */
+struct vmbus_channel_open_result {
+ struct vmbus_channel_message_header header;
+ u32 child_relid;
+ u32 openid;
+ u32 status;
+} __packed;
+
+/* Close channel parameters; */
+struct vmbus_channel_close_channel {
+ struct vmbus_channel_message_header header;
+ u32 child_relid;
+} __packed;
+
+/* Channel Message GPADL */
+#define GPADL_TYPE_RING_BUFFER 1
+#define GPADL_TYPE_SERVER_SAVE_AREA 2
+#define GPADL_TYPE_TRANSACTION 8
+
+/*
+ * The number of PFNs in a GPADL message is defined by the number of
+ * pages that would be spanned by ByteCount and ByteOffset. If the
+ * implied number of PFNs won't fit in this packet, there will be a
+ * follow-up packet that contains more.
+ */
+struct vmbus_channel_gpadl_header {
+ struct vmbus_channel_message_header header;
+ u32 child_relid;
+ u32 gpadl;
+ u16 range_buflen;
+ u16 rangecount;
+ struct gpa_range range[0];
+} __packed;
+
+/* This is the followup packet that contains more PFNs. */
+struct vmbus_channel_gpadl_body {
+ struct vmbus_channel_message_header header;
+ u32 msgnumber;
+ u32 gpadl;
+ u64 pfn[0];
+} __packed;
+
+struct vmbus_channel_gpadl_created {
+ struct vmbus_channel_message_header header;
+ u32 child_relid;
+ u32 gpadl;
+ u32 creation_status;
+} __packed;
+
+struct vmbus_channel_gpadl_teardown {
+ struct vmbus_channel_message_header header;
+ u32 child_relid;
+ u32 gpadl;
+} __packed;
+
+struct vmbus_channel_gpadl_torndown {
+ struct vmbus_channel_message_header header;
+ u32 gpadl;
+} __packed;
+
+#ifdef VMBUS_FEATURE_PARENT_OR_PEER_MEMORY_MAPPED_INTO_A_CHILD
+struct vmbus_channel_view_range_add {
+ struct vmbus_channel_message_header header;
+ PHYSICAL_ADDRESS viewrange_base;
+ u64 viewrange_length;
+ u32 child_relid;
+} __packed;
+
+struct vmbus_channel_view_range_remove {
+ struct vmbus_channel_message_header header;
+ PHYSICAL_ADDRESS viewrange_base;
+ u32 child_relid;
+} __packed;
+#endif
+
+struct vmbus_channel_relid_released {
+ struct vmbus_channel_message_header header;
+ u32 child_relid;
+} __packed;
+
+struct vmbus_channel_initiate_contact {
+ struct vmbus_channel_message_header header;
+ u32 vmbus_version_requested;
+ u32 padding2;
+ u64 interrupt_page;
+ u64 monitor_page1;
+ u64 monitor_page2;
+} __packed;
+
+struct vmbus_channel_version_response {
+ struct vmbus_channel_message_header header;
+ bool version_supported;
+} __packed;
+
+enum vmbus_channel_state {
+ CHANNEL_OFFER_STATE,
+ CHANNEL_OPENING_STATE,
+ CHANNEL_OPEN_STATE,
+};
+
+struct vmbus_channel {
+ struct list_head listentry;
+
+ struct hv_device *device_obj;
+
+ struct timer_list poll_timer; /* SA-111 workaround */
+ struct work_struct work;
+
+ enum vmbus_channel_state state;
+
+ struct vmbus_channel_offer_channel offermsg;
+ /*
+ * These are based on the OfferMsg.MonitorId.
+ * Save it here for easy access.
+ */
+ u8 monitor_grp;
+ u8 monitor_bit;
+
+ u32 ringbuffer_gpadlhandle;
+
+ /* Allocated memory for ring buffer */
+ void *ringbuffer_pages;
+ u32 ringbuffer_pagecount;
+ struct hv_ring_buffer_info outbound; /* send to parent */
+ struct hv_ring_buffer_info inbound; /* receive from parent */
+ spinlock_t inbound_lock;
+ struct workqueue_struct *controlwq;
+
+ /* Channel callback are invoked in this workqueue context */
+ /* HANDLE dataWorkQueue; */
+
+ void (*onchannel_callback)(void *context);
+ void *channel_callback_context;
+};
+
+struct vmbus_channel_debug_info {
+ u32 relid;
+ enum vmbus_channel_state state;
+ struct hv_guid interfacetype;
+ struct hv_guid interface_instance;
+ u32 monitorid;
+ u32 servermonitor_pending;
+ u32 servermonitor_latency;
+ u32 servermonitor_connectionid;
+ u32 clientmonitor_pending;
+ u32 clientmonitor_latency;
+ u32 clientmonitor_connectionid;
+
+ struct hv_ring_buffer_debug_info inbound;
+ struct hv_ring_buffer_debug_info outbound;
+};
+
+/*
+ * Represents each channel msg on the vmbus connection This is a
+ * variable-size data structure depending on the msg type itself
+ */
+struct vmbus_channel_msginfo {
+ /* Bookkeeping stuff */
+ struct list_head msglistentry;
+
+ /* So far, this is only used to handle gpadl body message */
+ struct list_head submsglist;
+
+ /* Synchronize the request/response if needed */
+ struct completion waitevent;
+ union {
+ struct vmbus_channel_version_supported version_supported;
+ struct vmbus_channel_open_result open_result;
+ struct vmbus_channel_gpadl_torndown gpadl_torndown;
+ struct vmbus_channel_gpadl_created gpadl_created;
+ struct vmbus_channel_version_response version_response;
+ } response;
+
+ u32 msgsize;
+ /*
+ * The channel message that goes out on the "wire".
+ * It will contain at minimum the VMBUS_CHANNEL_MESSAGE_HEADER header
+ */
+ unsigned char msg[0];
+};
+
+
+void free_channel(struct vmbus_channel *channel);
+
+void vmbus_onmessage(void *context);
+
+int vmbus_request_offers(void);
+

/* The format must be the same as struct vmdata_gpa_direct */
struct vmbus_channel_packet_page_buffer {
--
1.7.4.1


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