Index: head/sys/dev/hyperv/include/hyperv.h =================================================================== --- head/sys/dev/hyperv/include/hyperv.h (revision 302556) +++ head/sys/dev/hyperv/include/hyperv.h (revision 302557) @@ -1,910 +1,911 @@ /*- * Copyright (c) 2009-2012,2016 Microsoft Corp. * Copyright (c) 2012 NetApp Inc. * Copyright (c) 2012 Citrix Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ /** * HyperV definitions for messages that are sent between instances of the * Channel Management Library in separate partitions, or in some cases, * back to itself. */ #ifndef __HYPERV_H__ #define __HYPERV_H__ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include typedef uint8_t hv_bool_uint8_t; #define HV_S_OK 0x00000000 #define HV_E_FAIL 0x80004005 #define HV_ERROR_NOT_SUPPORTED 0x80070032 #define HV_ERROR_MACHINE_LOCKED 0x800704F7 /* * VMBUS version is 32 bit, upper 16 bit for major_number and lower * 16 bit for minor_number. * * 0.13 -- Windows Server 2008 * 1.1 -- Windows 7 * 2.4 -- Windows 8 * 3.0 -- Windows 8.1 */ #define HV_VMBUS_VERSION_WS2008 ((0 << 16) | (13)) #define HV_VMBUS_VERSION_WIN7 ((1 << 16) | (1)) #define HV_VMBUS_VERSION_WIN8 ((2 << 16) | (4)) #define HV_VMBUS_VERSION_WIN8_1 ((3 << 16) | (0)) /* * Make maximum size of pipe payload of 16K */ #define HV_MAX_PIPE_DATA_PAYLOAD (sizeof(BYTE) * 16384) /* * Define pipe_mode values */ #define HV_VMBUS_PIPE_TYPE_BYTE 0x00000000 #define HV_VMBUS_PIPE_TYPE_MESSAGE 0x00000004 /* * The size of the user defined data buffer for non-pipe offers */ #define HV_MAX_USER_DEFINED_BYTES 120 /* * The size of the user defined data buffer for pipe offers */ #define HV_MAX_PIPE_USER_DEFINED_BYTES 116 #define HV_MAX_PAGE_BUFFER_COUNT 32 #define HV_MAX_MULTIPAGE_BUFFER_COUNT 32 #define HV_ALIGN_UP(value, align) \ (((value) & (align-1)) ? \ (((value) + (align-1)) & ~(align-1) ) : (value)) #define HV_ALIGN_DOWN(value, align) ( (value) & ~(align-1) ) #define HV_NUM_PAGES_SPANNED(addr, len) \ ((HV_ALIGN_UP(addr+len, PAGE_SIZE) - \ HV_ALIGN_DOWN(addr, PAGE_SIZE)) >> PAGE_SHIFT ) typedef struct hv_guid { uint8_t data[16]; } __packed hv_guid; #define HYPERV_GUID_STRLEN 40 int hyperv_guid2str(const struct hv_guid *, char *, size_t); #define HV_NIC_GUID \ .data = {0x63, 0x51, 0x61, 0xF8, 0x3E, 0xDF, 0xc5, 0x46, \ 0x91, 0x3F, 0xF2, 0xD2, 0xF9, 0x65, 0xED, 0x0E} #define HV_IDE_GUID \ .data = {0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44, \ 0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5} #define HV_SCSI_GUID \ .data = {0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d, \ 0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f} /* * At the center of the Channel Management library is * the Channel Offer. This struct contains the * fundamental information about an offer. */ typedef struct hv_vmbus_channel_offer { hv_guid interface_type; hv_guid interface_instance; uint64_t interrupt_latency_in_100ns_units; uint32_t interface_revision; uint32_t server_context_area_size; /* in bytes */ uint16_t channel_flags; uint16_t mmio_megabytes; /* in bytes * 1024 * 1024 */ union { /* * Non-pipes: The user has HV_MAX_USER_DEFINED_BYTES bytes. */ struct { uint8_t user_defined[HV_MAX_USER_DEFINED_BYTES]; } __packed standard; /* * Pipes: The following structure is an integrated pipe protocol, which * is implemented on top of standard user-defined data. pipe * clients have HV_MAX_PIPE_USER_DEFINED_BYTES left for their * own use. */ struct { uint32_t pipe_mode; uint8_t user_defined[HV_MAX_PIPE_USER_DEFINED_BYTES]; } __packed pipe; } u; /* * Sub_channel_index, newly added in Win8. */ uint16_t sub_channel_index; uint16_t padding; } __packed hv_vmbus_channel_offer; typedef uint32_t hv_gpadl_handle; typedef struct { uint16_t type; uint16_t data_offset8; uint16_t length8; uint16_t flags; uint64_t transaction_id; } __packed hv_vm_packet_descriptor; typedef uint32_t hv_previous_packet_offset; typedef struct { hv_previous_packet_offset previous_packet_start_offset; hv_vm_packet_descriptor descriptor; } __packed hv_vm_packet_header; typedef struct { uint32_t byte_count; uint32_t byte_offset; } __packed hv_vm_transfer_page; typedef struct { hv_vm_packet_descriptor d; uint16_t transfer_page_set_id; hv_bool_uint8_t sender_owns_set; uint8_t reserved; uint32_t range_count; hv_vm_transfer_page ranges[1]; } __packed hv_vm_transfer_page_packet_header; typedef struct { hv_vm_packet_descriptor d; uint32_t gpadl; uint32_t reserved; } __packed hv_vm_gpadl_packet_header; typedef struct { hv_vm_packet_descriptor d; uint32_t gpadl; uint16_t transfer_page_set_id; uint16_t reserved; } __packed hv_vm_add_remove_transfer_page_set; /* * This structure defines a range in guest * physical space that can be made * to look virtually contiguous. */ typedef struct { uint32_t byte_count; uint32_t byte_offset; uint64_t pfn_array[0]; } __packed hv_gpa_range; /* * This is the format for an Establish Gpadl packet, which contains a handle * by which this GPADL will be known and a set of GPA ranges associated with * it. This can be converted to a MDL by the guest OS. If there are multiple * GPA ranges, then the resulting MDL will be "chained," representing multiple * VA ranges. */ typedef struct { hv_vm_packet_descriptor d; uint32_t gpadl; uint32_t range_count; hv_gpa_range range[1]; } __packed hv_vm_establish_gpadl; /* * This is the format for a Teardown Gpadl packet, which indicates that the * GPADL handle in the Establish Gpadl packet will never be referenced again. */ typedef struct { hv_vm_packet_descriptor d; uint32_t gpadl; /* for alignment to a 8-byte boundary */ uint32_t reserved; } __packed hv_vm_teardown_gpadl; /* * This is the format for a GPA-Direct packet, which contains a set of GPA * ranges, in addition to commands and/or data. */ typedef struct { hv_vm_packet_descriptor d; uint32_t reserved; uint32_t range_count; hv_gpa_range range[1]; } __packed hv_vm_data_gpa_direct; /* * This is the format for a Additional data Packet. */ typedef struct { hv_vm_packet_descriptor d; uint64_t total_bytes; uint32_t byte_offset; uint32_t byte_count; uint8_t data[1]; } __packed hv_vm_additional_data; typedef union { hv_vm_packet_descriptor simple_header; hv_vm_transfer_page_packet_header transfer_page_header; hv_vm_gpadl_packet_header gpadl_header; hv_vm_add_remove_transfer_page_set add_remove_transfer_page_header; hv_vm_establish_gpadl establish_gpadl_header; hv_vm_teardown_gpadl teardown_gpadl_header; hv_vm_data_gpa_direct data_gpa_direct_header; } __packed hv_vm_packet_largest_possible_header; typedef enum { HV_VMBUS_PACKET_TYPE_INVALID = 0x0, HV_VMBUS_PACKET_TYPES_SYNCH = 0x1, HV_VMBUS_PACKET_TYPE_ADD_TRANSFER_PAGE_SET = 0x2, HV_VMBUS_PACKET_TYPE_REMOVE_TRANSFER_PAGE_SET = 0x3, HV_VMBUS_PACKET_TYPE_ESTABLISH_GPADL = 0x4, HV_VMBUS_PACKET_TYPE_TEAR_DOWN_GPADL = 0x5, HV_VMBUS_PACKET_TYPE_DATA_IN_BAND = 0x6, HV_VMBUS_PACKET_TYPE_DATA_USING_TRANSFER_PAGES = 0x7, HV_VMBUS_PACKET_TYPE_DATA_USING_GPADL = 0x8, HV_VMBUS_PACKET_TYPE_DATA_USING_GPA_DIRECT = 0x9, HV_VMBUS_PACKET_TYPE_CANCEL_REQUEST = 0xa, HV_VMBUS_PACKET_TYPE_COMPLETION = 0xb, HV_VMBUS_PACKET_TYPE_DATA_USING_ADDITIONAL_PACKETS = 0xc, HV_VMBUS_PACKET_TYPE_ADDITIONAL_DATA = 0xd } hv_vmbus_packet_type; #define HV_VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED 1 /* * Version 1 messages */ typedef enum { HV_CHANNEL_MESSAGE_INVALID = 0, HV_CHANNEL_MESSAGE_OFFER_CHANNEL = 1, HV_CHANNEL_MESSAGE_RESCIND_CHANNEL_OFFER = 2, HV_CHANNEL_MESSAGE_REQUEST_OFFERS = 3, HV_CHANNEL_MESSAGE_ALL_OFFERS_DELIVERED = 4, HV_CHANNEL_MESSAGE_OPEN_CHANNEL = 5, HV_CHANNEL_MESSAGE_OPEN_CHANNEL_RESULT = 6, HV_CHANNEL_MESSAGE_CLOSE_CHANNEL = 7, HV_CHANNEL_MESSAGEL_GPADL_HEADER = 8, HV_CHANNEL_MESSAGE_GPADL_BODY = 9, HV_CHANNEL_MESSAGE_GPADL_CREATED = 10, HV_CHANNEL_MESSAGE_GPADL_TEARDOWN = 11, HV_CHANNEL_MESSAGE_GPADL_TORNDOWN = 12, HV_CHANNEL_MESSAGE_REL_ID_RELEASED = 13, HV_CHANNEL_MESSAGE_INITIATED_CONTACT = 14, HV_CHANNEL_MESSAGE_VERSION_RESPONSE = 15, HV_CHANNEL_MESSAGE_UNLOAD = 16, HV_CHANNEL_MESSAGE_COUNT } hv_vmbus_channel_msg_type; typedef struct { hv_vmbus_channel_msg_type message_type; uint32_t padding; } __packed hv_vmbus_channel_msg_header; /* * Query VMBus Version parameters */ typedef struct { hv_vmbus_channel_msg_header header; uint32_t version; } __packed hv_vmbus_channel_query_vmbus_version; /* * VMBus Version Supported parameters */ typedef struct { hv_vmbus_channel_msg_header header; hv_bool_uint8_t version_supported; } __packed hv_vmbus_channel_version_supported; /* * Channel Offer parameters */ typedef struct { hv_vmbus_channel_msg_header header; hv_vmbus_channel_offer offer; uint32_t child_rel_id; uint8_t monitor_id; /* * This field has been split into a bit field on Win7 * and higher. */ uint8_t monitor_allocated:1; uint8_t reserved:7; /* * Following fields were added in win7 and higher. * Make sure to check the version before accessing these fields. * * If "is_dedicated_interrupt" is set, we must not set the * associated bit in the channel bitmap while sending the * interrupt to the host. * * connection_id is used in signaling the host. */ uint16_t is_dedicated_interrupt:1; uint16_t reserved1:15; uint32_t connection_id; } __packed hv_vmbus_channel_offer_channel; /* * Rescind Offer parameters */ typedef struct { hv_vmbus_channel_msg_header header; uint32_t child_rel_id; } __packed hv_vmbus_channel_rescind_offer; /* * 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 */ typedef struct { hv_vmbus_channel_msg_header header; /* * Identifies the specific VMBus channel that is being opened. */ uint32_t child_rel_id; /* * ID making a particular open request at a channel offer unique. */ uint32_t open_id; /* * GPADL for the channel's ring buffer. */ hv_gpadl_handle ring_buffer_gpadl_handle; /* * Before win8, all incoming channel interrupts are only * delivered on cpu 0. Setting this value to 0 would * preserve the earlier behavior. */ uint32_t target_vcpu; /* * The upstream ring buffer begins at offset zero in the memory described * by ring_buffer_gpadl_handle. The downstream ring buffer follows it at * this offset (in pages). */ uint32_t downstream_ring_buffer_page_offset; /* * User-specific data to be passed along to the server endpoint. */ uint8_t user_data[HV_MAX_USER_DEFINED_BYTES]; } __packed hv_vmbus_channel_open_channel; typedef uint32_t hv_nt_status; /* * Open Channel Result parameters */ typedef struct { hv_vmbus_channel_msg_header header; uint32_t child_rel_id; uint32_t open_id; hv_nt_status status; } __packed hv_vmbus_channel_open_result; /* * Close channel parameters */ typedef struct { hv_vmbus_channel_msg_header header; uint32_t child_rel_id; } __packed hv_vmbus_channel_close_channel; /* * Channel Message GPADL */ #define HV_GPADL_TYPE_RING_BUFFER 1 #define HV_GPADL_TYPE_SERVER_SAVE_AREA 2 #define HV_GPADL_TYPE_TRANSACTION 8 /* * The number of PFNs in a GPADL message is defined by the number of pages * that would be spanned by byte_count and byte_offset. If the implied number * of PFNs won't fit in this packet, there will be a follow-up packet that * contains more */ typedef struct { hv_vmbus_channel_msg_header header; uint32_t child_rel_id; uint32_t gpadl; uint16_t range_buf_len; uint16_t range_count; hv_gpa_range range[0]; } __packed hv_vmbus_channel_gpadl_header; /* * This is the follow-up packet that contains more PFNs */ typedef struct { hv_vmbus_channel_msg_header header; uint32_t message_number; uint32_t gpadl; uint64_t pfn[0]; } __packed hv_vmbus_channel_gpadl_body; typedef struct { hv_vmbus_channel_msg_header header; uint32_t child_rel_id; uint32_t gpadl; uint32_t creation_status; } __packed hv_vmbus_channel_gpadl_created; typedef struct { hv_vmbus_channel_msg_header header; uint32_t child_rel_id; uint32_t gpadl; } __packed hv_vmbus_channel_gpadl_teardown; typedef struct { hv_vmbus_channel_msg_header header; uint32_t gpadl; } __packed hv_vmbus_channel_gpadl_torndown; typedef struct { hv_vmbus_channel_msg_header header; uint32_t child_rel_id; } __packed hv_vmbus_channel_relid_released; typedef hv_vmbus_channel_msg_header hv_vmbus_channel_unload; #define HW_MACADDR_LEN 6 /* * Fixme: Added to quiet "typeof" errors involving hv_vmbus.h when * the including C file was compiled with "-std=c99". */ #ifndef typeof #define typeof __typeof #endif #ifndef NULL #define NULL (void *)0 #endif typedef void *hv_vmbus_handle; #ifndef CONTAINING_RECORD #define CONTAINING_RECORD(address, type, field) ((type *)( \ (uint8_t *)(address) - \ (uint8_t *)(&((type *)0)->field))) #endif /* CONTAINING_RECORD */ #define container_of(ptr, type, member) ({ \ __typeof__( ((type *)0)->member ) *__mptr = (ptr); \ (type *)( (char *)__mptr - offsetof(type,member) );}) enum { HV_VMBUS_IVAR_TYPE, HV_VMBUS_IVAR_INSTANCE, HV_VMBUS_IVAR_NODE, HV_VMBUS_IVAR_DEVCTX }; #define HV_VMBUS_ACCESSOR(var, ivar, type) \ __BUS_ACCESSOR(vmbus, var, HV_VMBUS, ivar, type) HV_VMBUS_ACCESSOR(type, TYPE, const char *) HV_VMBUS_ACCESSOR(devctx, DEVCTX, struct hv_device *) /* * Common defines for Hyper-V ICs */ #define HV_ICMSGTYPE_NEGOTIATE 0 #define HV_ICMSGTYPE_HEARTBEAT 1 #define HV_ICMSGTYPE_KVPEXCHANGE 2 #define HV_ICMSGTYPE_SHUTDOWN 3 #define HV_ICMSGTYPE_TIMESYNC 4 #define HV_ICMSGTYPE_VSS 5 #define HV_ICMSGHDRFLAG_TRANSACTION 1 #define HV_ICMSGHDRFLAG_REQUEST 2 #define HV_ICMSGHDRFLAG_RESPONSE 4 typedef struct hv_vmbus_pipe_hdr { uint32_t flags; uint32_t msgsize; } __packed hv_vmbus_pipe_hdr; typedef struct hv_vmbus_ic_version { uint16_t major; uint16_t minor; } __packed hv_vmbus_ic_version; typedef struct hv_vmbus_icmsg_hdr { hv_vmbus_ic_version icverframe; uint16_t icmsgtype; hv_vmbus_ic_version icvermsg; uint16_t icmsgsize; uint32_t status; uint8_t ictransaction_id; uint8_t icflags; uint8_t reserved[2]; } __packed hv_vmbus_icmsg_hdr; typedef struct hv_vmbus_icmsg_negotiate { uint16_t icframe_vercnt; uint16_t icmsg_vercnt; uint32_t reserved; hv_vmbus_ic_version icversion_data[1]; /* any size array */ } __packed hv_vmbus_icmsg_negotiate; typedef struct hv_vmbus_shutdown_msg_data { uint32_t reason_code; uint32_t timeout_seconds; uint32_t flags; uint8_t display_message[2048]; } __packed hv_vmbus_shutdown_msg_data; typedef struct hv_vmbus_heartbeat_msg_data { uint64_t seq_num; uint32_t reserved[8]; } __packed hv_vmbus_heartbeat_msg_data; typedef struct { /* * offset in bytes from the start of ring data below */ volatile uint32_t write_index; /* * offset in bytes from the start of ring data below */ volatile uint32_t read_index; /* * NOTE: The interrupt_mask field is used only for channels, but * vmbus connection also uses this data structure */ volatile uint32_t interrupt_mask; /* pad it to PAGE_SIZE so that data starts on a page */ uint8_t reserved[4084]; /* * WARNING: Ring data starts here + ring_data_start_offset * !!! DO NOT place any fields below this !!! */ uint8_t buffer[0]; /* doubles as interrupt mask */ } __packed hv_vmbus_ring_buffer; typedef struct { int length; int offset; uint64_t pfn; } __packed hv_vmbus_page_buffer; typedef struct { int length; int offset; uint64_t pfn_array[HV_MAX_MULTIPAGE_BUFFER_COUNT]; } __packed hv_vmbus_multipage_buffer; typedef struct { hv_vmbus_ring_buffer* ring_buffer; uint32_t ring_size; /* Include the shared header */ struct mtx ring_lock; uint32_t ring_data_size; /* ring_size */ uint32_t ring_data_start_offset; } hv_vmbus_ring_buffer_info; typedef void (*hv_vmbus_pfn_channel_callback)(void *context); typedef enum { HV_CHANNEL_OFFER_STATE, HV_CHANNEL_OPENING_STATE, HV_CHANNEL_OPEN_STATE, HV_CHANNEL_OPENED_STATE, HV_CHANNEL_CLOSING_NONDESTRUCTIVE_STATE, } hv_vmbus_channel_state; /* * Connection identifier type */ typedef union { uint32_t as_uint32_t; struct { uint32_t id:24; uint32_t reserved:8; } u; } __packed hv_vmbus_connection_id; /* * Definition of the hv_vmbus_signal_event hypercall input structure */ typedef struct { hv_vmbus_connection_id connection_id; uint16_t flag_number; uint16_t rsvd_z; } __packed hv_vmbus_input_signal_event; typedef struct { uint64_t align8; hv_vmbus_input_signal_event event; } __packed hv_vmbus_input_signal_event_buffer; typedef struct hv_vmbus_channel { TAILQ_ENTRY(hv_vmbus_channel) list_entry; struct hv_device* device; + struct vmbus_softc *vmbus_sc; hv_vmbus_channel_state state; hv_vmbus_channel_offer_channel offer_msg; /* * These are based on the offer_msg.monitor_id. * Save it here for easy access. */ uint8_t monitor_group; uint8_t monitor_bit; uint32_t ring_buffer_gpadl_handle; /* * Allocated memory for ring buffer */ void* ring_buffer_pages; unsigned long ring_buffer_size; uint32_t ring_buffer_page_count; /* * send to parent */ hv_vmbus_ring_buffer_info outbound; /* * receive from parent */ hv_vmbus_ring_buffer_info inbound; struct taskqueue * rxq; struct task channel_task; hv_vmbus_pfn_channel_callback on_channel_callback; void* channel_callback_context; /* * If batched_reading is set to "true", mask the interrupt * and read until the channel is empty. * If batched_reading is set to "false", the channel is not * going to perform batched reading. * * Batched reading is enabled by default; specific * drivers that don't want this behavior can turn it off. */ boolean_t batched_reading; boolean_t is_dedicated_interrupt; /* * Used as an input param for HV_CALL_SIGNAL_EVENT hypercall. */ hv_vmbus_input_signal_event_buffer signal_event_buffer; /* * 8-bytes aligned of the buffer above */ hv_vmbus_input_signal_event *signal_event_param; /* * From Win8, this field specifies the target virtual process * on which to deliver the interrupt from the host to guest. * Before Win8, all channel interrupts would only be * delivered on cpu 0. Setting this value to 0 would preserve * the earlier behavior. */ uint32_t target_vcpu; /* The corresponding CPUID in the guest */ uint32_t target_cpu; /* * Support for multi-channels. * The initial offer is considered the primary channel and this * offer message will indicate if the host supports multi-channels. * The guest is free to ask for multi-channels to be offerred and can * open these multi-channels as a normal "primary" channel. However, * all multi-channels will have the same type and instance guids as the * primary channel. Requests sent on a given channel will result in a * response on the same channel. */ struct mtx sc_lock; /* * Link list of all the multi-channels if this is a primary channel */ TAILQ_HEAD(, hv_vmbus_channel) sc_list_anchor; TAILQ_ENTRY(hv_vmbus_channel) sc_list_entry; int subchan_cnt; /* * The primary channel this sub-channle belongs to. * This will be NULL for the primary channel. */ struct hv_vmbus_channel *primary_channel; /* * Driver private data */ void *hv_chan_priv1; void *hv_chan_priv2; void *hv_chan_priv3; } hv_vmbus_channel; #define HV_VMBUS_CHAN_ISPRIMARY(chan) ((chan)->primary_channel == NULL) static inline void hv_set_channel_read_state(hv_vmbus_channel* channel, boolean_t state) { channel->batched_reading = state; } typedef struct hv_device { hv_guid class_id; hv_guid device_id; device_t device; hv_vmbus_channel* channel; } hv_device; int hv_vmbus_channel_recv_packet( hv_vmbus_channel* channel, void* buffer, uint32_t buffer_len, uint32_t* buffer_actual_len, uint64_t* request_id); int hv_vmbus_channel_recv_packet_raw( hv_vmbus_channel* channel, void* buffer, uint32_t buffer_len, uint32_t* buffer_actual_len, uint64_t* request_id); int hv_vmbus_channel_open( hv_vmbus_channel* channel, uint32_t send_ring_buffer_size, uint32_t recv_ring_buffer_size, void* user_data, uint32_t user_data_len, hv_vmbus_pfn_channel_callback pfn_on_channel_callback, void* context); void hv_vmbus_channel_close(hv_vmbus_channel *channel); int hv_vmbus_channel_send_packet( hv_vmbus_channel* channel, void* buffer, uint32_t buffer_len, uint64_t request_id, hv_vmbus_packet_type type, uint32_t flags); int hv_vmbus_channel_send_packet_pagebuffer( hv_vmbus_channel* channel, hv_vmbus_page_buffer page_buffers[], uint32_t page_count, void* buffer, uint32_t buffer_len, uint64_t request_id); int hv_vmbus_channel_send_packet_multipagebuffer( hv_vmbus_channel* channel, hv_vmbus_multipage_buffer* multi_page_buffer, void* buffer, uint32_t buffer_len, uint64_t request_id); int hv_vmbus_channel_establish_gpadl( hv_vmbus_channel* channel, /* must be phys and virt contiguous */ void* contig_buffer, /* page-size multiple */ uint32_t size, uint32_t* gpadl_handle); int hv_vmbus_channel_teardown_gpdal( hv_vmbus_channel* channel, uint32_t gpadl_handle); struct hv_vmbus_channel* vmbus_select_outgoing_channel(struct hv_vmbus_channel *promary); void vmbus_channel_cpu_set(struct hv_vmbus_channel *chan, int cpu); struct hv_vmbus_channel ** vmbus_get_subchan(struct hv_vmbus_channel *pri_chan, int subchan_cnt); void vmbus_rel_subchan(struct hv_vmbus_channel **subchan, int subchan_cnt); /** * @brief Get physical address from virtual */ static inline unsigned long hv_get_phys_addr(void *virt) { unsigned long ret; ret = (vtophys(virt) | ((vm_offset_t) virt & PAGE_MASK)); return (ret); } extern uint32_t hv_vmbus_protocal_version; #endif /* __HYPERV_H__ */ Index: head/sys/dev/hyperv/vmbus/hv_channel.c =================================================================== --- head/sys/dev/hyperv/vmbus/hv_channel.c (revision 302556) +++ head/sys/dev/hyperv/vmbus/hv_channel.c (revision 302557) @@ -1,1034 +1,1034 @@ /*- * Copyright (c) 2009-2012,2016 Microsoft Corp. * Copyright (c) 2012 NetApp Inc. * Copyright (c) 2012 Citrix Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static int vmbus_channel_create_gpadl_header( /* must be phys and virt contiguous*/ void* contig_buffer, /* page-size multiple */ uint32_t size, hv_vmbus_channel_msg_info** msg_info, uint32_t* message_count); static void vmbus_channel_set_event(hv_vmbus_channel* channel); static void VmbusProcessChannelEvent(void* channel, int pending); /** * @brief Trigger an event notification on the specified channel */ static void vmbus_channel_set_event(hv_vmbus_channel *channel) { if (channel->offer_msg.monitor_allocated) { - struct vmbus_softc *sc = vmbus_get_softc(); + struct vmbus_softc *sc = channel->vmbus_sc; hv_vmbus_monitor_page *monitor_page; uint32_t chanid = channel->offer_msg.child_rel_id; atomic_set_long( &sc->vmbus_tx_evtflags[chanid >> VMBUS_EVTFLAG_SHIFT], 1UL << (chanid & VMBUS_EVTFLAG_MASK)); monitor_page = sc->vmbus_mnf2; synch_set_bit(channel->monitor_bit, (uint32_t *)&monitor_page-> trigger_group[channel->monitor_group].u.pending); } else { hv_vmbus_set_event(channel); } } static int vmbus_channel_sysctl_monalloc(SYSCTL_HANDLER_ARGS) { struct hv_vmbus_channel *chan = arg1; int alloc = 0; if (chan->offer_msg.monitor_allocated) alloc = 1; return sysctl_handle_int(oidp, &alloc, 0, req); } static void vmbus_channel_sysctl_create(hv_vmbus_channel* channel) { device_t dev; struct sysctl_oid *devch_sysctl; struct sysctl_oid *devch_id_sysctl, *devch_sub_sysctl; struct sysctl_oid *devch_id_in_sysctl, *devch_id_out_sysctl; struct sysctl_ctx_list *ctx; uint32_t ch_id; uint16_t sub_ch_id; char name[16]; hv_vmbus_channel* primary_ch = channel->primary_channel; if (primary_ch == NULL) { dev = channel->device->device; ch_id = channel->offer_msg.child_rel_id; } else { dev = primary_ch->device->device; ch_id = primary_ch->offer_msg.child_rel_id; sub_ch_id = channel->offer_msg.offer.sub_channel_index; } ctx = device_get_sysctl_ctx(dev); /* This creates dev.DEVNAME.DEVUNIT.channel tree */ devch_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, "channel", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); /* This creates dev.DEVNAME.DEVUNIT.channel.CHANID tree */ snprintf(name, sizeof(name), "%d", ch_id); devch_id_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(devch_sysctl), OID_AUTO, name, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); if (primary_ch != NULL) { devch_sub_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(devch_id_sysctl), OID_AUTO, "sub", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); snprintf(name, sizeof(name), "%d", sub_ch_id); devch_id_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(devch_sub_sysctl), OID_AUTO, name, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(devch_id_sysctl), OID_AUTO, "chanid", CTLFLAG_RD, &channel->offer_msg.child_rel_id, 0, "channel id"); } SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(devch_id_sysctl), OID_AUTO, "cpu", CTLFLAG_RD, &channel->target_cpu, 0, "owner CPU id"); SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(devch_id_sysctl), OID_AUTO, "monitor_allocated", CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, channel, 0, vmbus_channel_sysctl_monalloc, "I", "is monitor allocated to this channel"); devch_id_in_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(devch_id_sysctl), OID_AUTO, "in", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); devch_id_out_sysctl = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(devch_id_sysctl), OID_AUTO, "out", CTLFLAG_RD | CTLFLAG_MPSAFE, 0, ""); hv_ring_buffer_stat(ctx, SYSCTL_CHILDREN(devch_id_in_sysctl), &(channel->inbound), "inbound ring buffer stats"); hv_ring_buffer_stat(ctx, SYSCTL_CHILDREN(devch_id_out_sysctl), &(channel->outbound), "outbound ring buffer stats"); } /** * @brief Open the specified channel */ int hv_vmbus_channel_open( hv_vmbus_channel* new_channel, uint32_t send_ring_buffer_size, uint32_t recv_ring_buffer_size, void* user_data, uint32_t user_data_len, hv_vmbus_pfn_channel_callback pfn_on_channel_callback, void* context) { int ret = 0; void *in, *out; hv_vmbus_channel_open_channel* open_msg; hv_vmbus_channel_msg_info* open_info; mtx_lock(&new_channel->sc_lock); if (new_channel->state == HV_CHANNEL_OPEN_STATE) { new_channel->state = HV_CHANNEL_OPENING_STATE; } else { mtx_unlock(&new_channel->sc_lock); if(bootverbose) printf("VMBUS: Trying to open channel <%p> which in " "%d state.\n", new_channel, new_channel->state); return (EINVAL); } mtx_unlock(&new_channel->sc_lock); new_channel->on_channel_callback = pfn_on_channel_callback; new_channel->channel_callback_context = context; vmbus_on_channel_open(new_channel); - new_channel->rxq = VMBUS_PCPU_GET(vmbus_get_softc(), event_tq, + new_channel->rxq = VMBUS_PCPU_GET(new_channel->vmbus_sc, event_tq, new_channel->target_cpu); TASK_INIT(&new_channel->channel_task, 0, VmbusProcessChannelEvent, new_channel); /* Allocate the ring buffer */ out = contigmalloc((send_ring_buffer_size + recv_ring_buffer_size), M_DEVBUF, M_ZERO, 0UL, BUS_SPACE_MAXADDR, PAGE_SIZE, 0); KASSERT(out != NULL, ("Error VMBUS: contigmalloc failed to allocate Ring Buffer!")); if (out == NULL) return (ENOMEM); in = ((uint8_t *) out + send_ring_buffer_size); new_channel->ring_buffer_pages = out; new_channel->ring_buffer_page_count = (send_ring_buffer_size + recv_ring_buffer_size) >> PAGE_SHIFT; new_channel->ring_buffer_size = send_ring_buffer_size + recv_ring_buffer_size; hv_vmbus_ring_buffer_init( &new_channel->outbound, out, send_ring_buffer_size); hv_vmbus_ring_buffer_init( &new_channel->inbound, in, recv_ring_buffer_size); /* Create sysctl tree for this channel */ vmbus_channel_sysctl_create(new_channel); /** * Establish the gpadl for the ring buffer */ new_channel->ring_buffer_gpadl_handle = 0; ret = hv_vmbus_channel_establish_gpadl(new_channel, new_channel->outbound.ring_buffer, send_ring_buffer_size + recv_ring_buffer_size, &new_channel->ring_buffer_gpadl_handle); /** * Create and init the channel open message */ open_info = (hv_vmbus_channel_msg_info*) malloc( sizeof(hv_vmbus_channel_msg_info) + sizeof(hv_vmbus_channel_open_channel), M_DEVBUF, M_NOWAIT); KASSERT(open_info != NULL, ("Error VMBUS: malloc failed to allocate Open Channel message!")); if (open_info == NULL) return (ENOMEM); sema_init(&open_info->wait_sema, 0, "Open Info Sema"); open_msg = (hv_vmbus_channel_open_channel*) open_info->msg; open_msg->header.message_type = HV_CHANNEL_MESSAGE_OPEN_CHANNEL; open_msg->open_id = new_channel->offer_msg.child_rel_id; open_msg->child_rel_id = new_channel->offer_msg.child_rel_id; open_msg->ring_buffer_gpadl_handle = new_channel->ring_buffer_gpadl_handle; open_msg->downstream_ring_buffer_page_offset = send_ring_buffer_size >> PAGE_SHIFT; open_msg->target_vcpu = new_channel->target_vcpu; if (user_data_len) memcpy(open_msg->user_data, user_data, user_data_len); mtx_lock(&hv_vmbus_g_connection.channel_msg_lock); TAILQ_INSERT_TAIL( &hv_vmbus_g_connection.channel_msg_anchor, open_info, msg_list_entry); mtx_unlock(&hv_vmbus_g_connection.channel_msg_lock); ret = hv_vmbus_post_message( open_msg, sizeof(hv_vmbus_channel_open_channel)); if (ret != 0) goto cleanup; ret = sema_timedwait(&open_info->wait_sema, 5 * hz); /* KYS 5 seconds */ if (ret) { if(bootverbose) printf("VMBUS: channel <%p> open timeout.\n", new_channel); goto cleanup; } if (open_info->response.open_result.status == 0) { new_channel->state = HV_CHANNEL_OPENED_STATE; if(bootverbose) printf("VMBUS: channel <%p> open success.\n", new_channel); } else { if(bootverbose) printf("Error VMBUS: channel <%p> open failed - %d!\n", new_channel, open_info->response.open_result.status); } cleanup: mtx_lock(&hv_vmbus_g_connection.channel_msg_lock); TAILQ_REMOVE( &hv_vmbus_g_connection.channel_msg_anchor, open_info, msg_list_entry); mtx_unlock(&hv_vmbus_g_connection.channel_msg_lock); sema_destroy(&open_info->wait_sema); free(open_info, M_DEVBUF); return (ret); } /** * @brief Create a gpadl for the specified buffer */ static int vmbus_channel_create_gpadl_header( void* contig_buffer, uint32_t size, /* page-size multiple */ hv_vmbus_channel_msg_info** msg_info, uint32_t* message_count) { int i; int page_count; unsigned long long pfn; uint32_t msg_size; hv_vmbus_channel_gpadl_header* gpa_header; hv_vmbus_channel_gpadl_body* gpadl_body; hv_vmbus_channel_msg_info* msg_header; hv_vmbus_channel_msg_info* msg_body; int pfnSum, pfnCount, pfnLeft, pfnCurr, pfnSize; page_count = size >> PAGE_SHIFT; pfn = hv_get_phys_addr(contig_buffer) >> PAGE_SHIFT; /*do we need a gpadl body msg */ pfnSize = HV_MAX_SIZE_CHANNEL_MESSAGE - sizeof(hv_vmbus_channel_gpadl_header) - sizeof(hv_gpa_range); pfnCount = pfnSize / sizeof(uint64_t); if (page_count > pfnCount) { /* if(we need a gpadl body) */ /* fill in the header */ msg_size = sizeof(hv_vmbus_channel_msg_info) + sizeof(hv_vmbus_channel_gpadl_header) + sizeof(hv_gpa_range) + pfnCount * sizeof(uint64_t); msg_header = malloc(msg_size, M_DEVBUF, M_NOWAIT | M_ZERO); KASSERT( msg_header != NULL, ("Error VMBUS: malloc failed to allocate Gpadl Message!")); if (msg_header == NULL) return (ENOMEM); TAILQ_INIT(&msg_header->sub_msg_list_anchor); msg_header->message_size = msg_size; gpa_header = (hv_vmbus_channel_gpadl_header*) msg_header->msg; gpa_header->range_count = 1; gpa_header->range_buf_len = sizeof(hv_gpa_range) + page_count * sizeof(uint64_t); gpa_header->range[0].byte_offset = 0; gpa_header->range[0].byte_count = size; for (i = 0; i < pfnCount; i++) { gpa_header->range[0].pfn_array[i] = pfn + i; } *msg_info = msg_header; *message_count = 1; pfnSum = pfnCount; pfnLeft = page_count - pfnCount; /* * figure out how many pfns we can fit */ pfnSize = HV_MAX_SIZE_CHANNEL_MESSAGE - sizeof(hv_vmbus_channel_gpadl_body); pfnCount = pfnSize / sizeof(uint64_t); /* * fill in the body */ while (pfnLeft) { if (pfnLeft > pfnCount) { pfnCurr = pfnCount; } else { pfnCurr = pfnLeft; } msg_size = sizeof(hv_vmbus_channel_msg_info) + sizeof(hv_vmbus_channel_gpadl_body) + pfnCurr * sizeof(uint64_t); msg_body = malloc(msg_size, M_DEVBUF, M_NOWAIT | M_ZERO); KASSERT( msg_body != NULL, ("Error VMBUS: malloc failed to allocate Gpadl msg_body!")); if (msg_body == NULL) return (ENOMEM); msg_body->message_size = msg_size; (*message_count)++; gpadl_body = (hv_vmbus_channel_gpadl_body*) msg_body->msg; /* * gpadl_body->gpadl = kbuffer; */ for (i = 0; i < pfnCurr; i++) { gpadl_body->pfn[i] = pfn + pfnSum + i; } TAILQ_INSERT_TAIL( &msg_header->sub_msg_list_anchor, msg_body, msg_list_entry); pfnSum += pfnCurr; pfnLeft -= pfnCurr; } } else { /* else everything fits in a header */ msg_size = sizeof(hv_vmbus_channel_msg_info) + sizeof(hv_vmbus_channel_gpadl_header) + sizeof(hv_gpa_range) + page_count * sizeof(uint64_t); msg_header = malloc(msg_size, M_DEVBUF, M_NOWAIT | M_ZERO); KASSERT( msg_header != NULL, ("Error VMBUS: malloc failed to allocate Gpadl Message!")); if (msg_header == NULL) return (ENOMEM); msg_header->message_size = msg_size; gpa_header = (hv_vmbus_channel_gpadl_header*) msg_header->msg; gpa_header->range_count = 1; gpa_header->range_buf_len = sizeof(hv_gpa_range) + page_count * sizeof(uint64_t); gpa_header->range[0].byte_offset = 0; gpa_header->range[0].byte_count = size; for (i = 0; i < page_count; i++) { gpa_header->range[0].pfn_array[i] = pfn + i; } *msg_info = msg_header; *message_count = 1; } return (0); } /** * @brief Establish a GPADL for the specified buffer */ int hv_vmbus_channel_establish_gpadl( hv_vmbus_channel* channel, void* contig_buffer, uint32_t size, /* page-size multiple */ uint32_t* gpadl_handle) { int ret = 0; hv_vmbus_channel_gpadl_header* gpadl_msg; hv_vmbus_channel_gpadl_body* gpadl_body; hv_vmbus_channel_msg_info* msg_info; hv_vmbus_channel_msg_info* sub_msg_info; uint32_t msg_count; hv_vmbus_channel_msg_info* curr; uint32_t next_gpadl_handle; next_gpadl_handle = atomic_fetchadd_int( &hv_vmbus_g_connection.next_gpadl_handle, 1); ret = vmbus_channel_create_gpadl_header( contig_buffer, size, &msg_info, &msg_count); if(ret != 0) { /* * XXX * We can _not_ even revert the above incremental, * if multiple GPADL establishments are running * parallelly, decrement the global next_gpadl_handle * is calling for _big_ trouble. A better solution * is to have a 0-based GPADL id bitmap ... */ return ret; } sema_init(&msg_info->wait_sema, 0, "Open Info Sema"); gpadl_msg = (hv_vmbus_channel_gpadl_header*) msg_info->msg; gpadl_msg->header.message_type = HV_CHANNEL_MESSAGEL_GPADL_HEADER; gpadl_msg->child_rel_id = channel->offer_msg.child_rel_id; gpadl_msg->gpadl = next_gpadl_handle; mtx_lock(&hv_vmbus_g_connection.channel_msg_lock); TAILQ_INSERT_TAIL( &hv_vmbus_g_connection.channel_msg_anchor, msg_info, msg_list_entry); mtx_unlock(&hv_vmbus_g_connection.channel_msg_lock); ret = hv_vmbus_post_message( gpadl_msg, msg_info->message_size - (uint32_t) sizeof(hv_vmbus_channel_msg_info)); if (ret != 0) goto cleanup; if (msg_count > 1) { TAILQ_FOREACH(curr, &msg_info->sub_msg_list_anchor, msg_list_entry) { sub_msg_info = curr; gpadl_body = (hv_vmbus_channel_gpadl_body*) sub_msg_info->msg; gpadl_body->header.message_type = HV_CHANNEL_MESSAGE_GPADL_BODY; gpadl_body->gpadl = next_gpadl_handle; ret = hv_vmbus_post_message( gpadl_body, sub_msg_info->message_size - (uint32_t) sizeof(hv_vmbus_channel_msg_info)); /* if (the post message failed) give up and clean up */ if(ret != 0) goto cleanup; } } ret = sema_timedwait(&msg_info->wait_sema, 5 * hz); /* KYS 5 seconds*/ if (ret != 0) goto cleanup; *gpadl_handle = gpadl_msg->gpadl; cleanup: mtx_lock(&hv_vmbus_g_connection.channel_msg_lock); TAILQ_REMOVE(&hv_vmbus_g_connection.channel_msg_anchor, msg_info, msg_list_entry); mtx_unlock(&hv_vmbus_g_connection.channel_msg_lock); sema_destroy(&msg_info->wait_sema); free(msg_info, M_DEVBUF); return (ret); } /** * @brief Teardown the specified GPADL handle */ int hv_vmbus_channel_teardown_gpdal( hv_vmbus_channel* channel, uint32_t gpadl_handle) { int ret = 0; hv_vmbus_channel_gpadl_teardown* msg; hv_vmbus_channel_msg_info* info; info = (hv_vmbus_channel_msg_info *) malloc( sizeof(hv_vmbus_channel_msg_info) + sizeof(hv_vmbus_channel_gpadl_teardown), M_DEVBUF, M_NOWAIT); KASSERT(info != NULL, ("Error VMBUS: malloc failed to allocate Gpadl Teardown Msg!")); if (info == NULL) { ret = ENOMEM; goto cleanup; } sema_init(&info->wait_sema, 0, "Open Info Sema"); msg = (hv_vmbus_channel_gpadl_teardown*) info->msg; msg->header.message_type = HV_CHANNEL_MESSAGE_GPADL_TEARDOWN; msg->child_rel_id = channel->offer_msg.child_rel_id; msg->gpadl = gpadl_handle; mtx_lock(&hv_vmbus_g_connection.channel_msg_lock); TAILQ_INSERT_TAIL(&hv_vmbus_g_connection.channel_msg_anchor, info, msg_list_entry); mtx_unlock(&hv_vmbus_g_connection.channel_msg_lock); ret = hv_vmbus_post_message(msg, sizeof(hv_vmbus_channel_gpadl_teardown)); if (ret != 0) goto cleanup; ret = sema_timedwait(&info->wait_sema, 5 * hz); /* KYS 5 seconds */ cleanup: /* * Received a torndown response */ mtx_lock(&hv_vmbus_g_connection.channel_msg_lock); TAILQ_REMOVE(&hv_vmbus_g_connection.channel_msg_anchor, info, msg_list_entry); mtx_unlock(&hv_vmbus_g_connection.channel_msg_lock); sema_destroy(&info->wait_sema); free(info, M_DEVBUF); return (ret); } static void hv_vmbus_channel_close_internal(hv_vmbus_channel *channel) { int ret = 0; struct taskqueue *rxq = channel->rxq; hv_vmbus_channel_close_channel* msg; hv_vmbus_channel_msg_info* info; channel->state = HV_CHANNEL_OPEN_STATE; /* * set rxq to NULL to avoid more requests be scheduled */ channel->rxq = NULL; taskqueue_drain(rxq, &channel->channel_task); channel->on_channel_callback = NULL; /** * Send a closing message */ info = (hv_vmbus_channel_msg_info *) malloc( sizeof(hv_vmbus_channel_msg_info) + sizeof(hv_vmbus_channel_close_channel), M_DEVBUF, M_NOWAIT); KASSERT(info != NULL, ("VMBUS: malloc failed hv_vmbus_channel_close!")); if(info == NULL) return; msg = (hv_vmbus_channel_close_channel*) info->msg; msg->header.message_type = HV_CHANNEL_MESSAGE_CLOSE_CHANNEL; msg->child_rel_id = channel->offer_msg.child_rel_id; ret = hv_vmbus_post_message( msg, sizeof(hv_vmbus_channel_close_channel)); /* Tear down the gpadl for the channel's ring buffer */ if (channel->ring_buffer_gpadl_handle) { hv_vmbus_channel_teardown_gpdal(channel, channel->ring_buffer_gpadl_handle); } /* TODO: Send a msg to release the childRelId */ /* cleanup the ring buffers for this channel */ hv_ring_buffer_cleanup(&channel->outbound); hv_ring_buffer_cleanup(&channel->inbound); contigfree(channel->ring_buffer_pages, channel->ring_buffer_size, M_DEVBUF); free(info, M_DEVBUF); } /** * @brief Close the specified channel */ void hv_vmbus_channel_close(hv_vmbus_channel *channel) { hv_vmbus_channel* sub_channel; if (channel->primary_channel != NULL) { /* * We only close multi-channels when the primary is * closed. */ return; } /* * Close all multi-channels first. */ TAILQ_FOREACH(sub_channel, &channel->sc_list_anchor, sc_list_entry) { if (sub_channel->state != HV_CHANNEL_OPENED_STATE) continue; hv_vmbus_channel_close_internal(sub_channel); } /* * Then close the primary channel. */ hv_vmbus_channel_close_internal(channel); } /** * @brief Send the specified buffer on the given channel */ int hv_vmbus_channel_send_packet( hv_vmbus_channel* channel, void* buffer, uint32_t buffer_len, uint64_t request_id, hv_vmbus_packet_type type, uint32_t flags) { int ret = 0; hv_vm_packet_descriptor desc; uint32_t packet_len; uint64_t aligned_data; uint32_t packet_len_aligned; boolean_t need_sig; hv_vmbus_sg_buffer_list buffer_list[3]; packet_len = sizeof(hv_vm_packet_descriptor) + buffer_len; packet_len_aligned = HV_ALIGN_UP(packet_len, sizeof(uint64_t)); aligned_data = 0; /* Setup the descriptor */ desc.type = type; /* HV_VMBUS_PACKET_TYPE_DATA_IN_BAND; */ desc.flags = flags; /* HV_VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED */ /* in 8-bytes granularity */ desc.data_offset8 = sizeof(hv_vm_packet_descriptor) >> 3; desc.length8 = (uint16_t) (packet_len_aligned >> 3); desc.transaction_id = request_id; buffer_list[0].data = &desc; buffer_list[0].length = sizeof(hv_vm_packet_descriptor); buffer_list[1].data = buffer; buffer_list[1].length = buffer_len; buffer_list[2].data = &aligned_data; buffer_list[2].length = packet_len_aligned - packet_len; ret = hv_ring_buffer_write(&channel->outbound, buffer_list, 3, &need_sig); /* TODO: We should determine if this is optional */ if (ret == 0 && need_sig) { vmbus_channel_set_event(channel); } return (ret); } /** * @brief Send a range of single-page buffer packets using * a GPADL Direct packet type */ int hv_vmbus_channel_send_packet_pagebuffer( hv_vmbus_channel* channel, hv_vmbus_page_buffer page_buffers[], uint32_t page_count, void* buffer, uint32_t buffer_len, uint64_t request_id) { int ret = 0; boolean_t need_sig; uint32_t packet_len; uint32_t page_buflen; uint32_t packetLen_aligned; hv_vmbus_sg_buffer_list buffer_list[4]; hv_vmbus_channel_packet_page_buffer desc; uint32_t descSize; uint64_t alignedData = 0; if (page_count > HV_MAX_PAGE_BUFFER_COUNT) return (EINVAL); /* * Adjust the size down since hv_vmbus_channel_packet_page_buffer * is the largest size we support */ descSize = __offsetof(hv_vmbus_channel_packet_page_buffer, range); page_buflen = sizeof(hv_vmbus_page_buffer) * page_count; packet_len = descSize + page_buflen + buffer_len; packetLen_aligned = HV_ALIGN_UP(packet_len, sizeof(uint64_t)); /* Setup the descriptor */ desc.type = HV_VMBUS_PACKET_TYPE_DATA_USING_GPA_DIRECT; desc.flags = HV_VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; /* in 8-bytes granularity */ desc.data_offset8 = (descSize + page_buflen) >> 3; desc.length8 = (uint16_t) (packetLen_aligned >> 3); desc.transaction_id = request_id; desc.range_count = page_count; buffer_list[0].data = &desc; buffer_list[0].length = descSize; buffer_list[1].data = page_buffers; buffer_list[1].length = page_buflen; buffer_list[2].data = buffer; buffer_list[2].length = buffer_len; buffer_list[3].data = &alignedData; buffer_list[3].length = packetLen_aligned - packet_len; ret = hv_ring_buffer_write(&channel->outbound, buffer_list, 4, &need_sig); /* TODO: We should determine if this is optional */ if (ret == 0 && need_sig) { vmbus_channel_set_event(channel); } return (ret); } /** * @brief Send a multi-page buffer packet using a GPADL Direct packet type */ int hv_vmbus_channel_send_packet_multipagebuffer( hv_vmbus_channel* channel, hv_vmbus_multipage_buffer* multi_page_buffer, void* buffer, uint32_t buffer_len, uint64_t request_id) { int ret = 0; uint32_t desc_size; boolean_t need_sig; uint32_t packet_len; uint32_t packet_len_aligned; uint32_t pfn_count; uint64_t aligned_data = 0; hv_vmbus_sg_buffer_list buffer_list[3]; hv_vmbus_channel_packet_multipage_buffer desc; pfn_count = HV_NUM_PAGES_SPANNED( multi_page_buffer->offset, multi_page_buffer->length); if ((pfn_count == 0) || (pfn_count > HV_MAX_MULTIPAGE_BUFFER_COUNT)) return (EINVAL); /* * Adjust the size down since hv_vmbus_channel_packet_multipage_buffer * is the largest size we support */ desc_size = sizeof(hv_vmbus_channel_packet_multipage_buffer) - ((HV_MAX_MULTIPAGE_BUFFER_COUNT - pfn_count) * sizeof(uint64_t)); packet_len = desc_size + buffer_len; packet_len_aligned = HV_ALIGN_UP(packet_len, sizeof(uint64_t)); /* * Setup the descriptor */ desc.type = HV_VMBUS_PACKET_TYPE_DATA_USING_GPA_DIRECT; desc.flags = HV_VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED; desc.data_offset8 = desc_size >> 3; /* in 8-bytes granularity */ desc.length8 = (uint16_t) (packet_len_aligned >> 3); desc.transaction_id = request_id; desc.range_count = 1; desc.range.length = multi_page_buffer->length; desc.range.offset = multi_page_buffer->offset; memcpy(desc.range.pfn_array, multi_page_buffer->pfn_array, pfn_count * sizeof(uint64_t)); buffer_list[0].data = &desc; buffer_list[0].length = desc_size; buffer_list[1].data = buffer; buffer_list[1].length = buffer_len; buffer_list[2].data = &aligned_data; buffer_list[2].length = packet_len_aligned - packet_len; ret = hv_ring_buffer_write(&channel->outbound, buffer_list, 3, &need_sig); /* TODO: We should determine if this is optional */ if (ret == 0 && need_sig) { vmbus_channel_set_event(channel); } return (ret); } /** * @brief Retrieve the user packet on the specified channel */ int hv_vmbus_channel_recv_packet( hv_vmbus_channel* channel, void* Buffer, uint32_t buffer_len, uint32_t* buffer_actual_len, uint64_t* request_id) { int ret; uint32_t user_len; uint32_t packet_len; hv_vm_packet_descriptor desc; *buffer_actual_len = 0; *request_id = 0; ret = hv_ring_buffer_peek(&channel->inbound, &desc, sizeof(hv_vm_packet_descriptor)); if (ret != 0) return (0); packet_len = desc.length8 << 3; user_len = packet_len - (desc.data_offset8 << 3); *buffer_actual_len = user_len; if (user_len > buffer_len) return (EINVAL); *request_id = desc.transaction_id; /* Copy over the packet to the user buffer */ ret = hv_ring_buffer_read(&channel->inbound, Buffer, user_len, (desc.data_offset8 << 3)); return (0); } /** * @brief Retrieve the raw packet on the specified channel */ int hv_vmbus_channel_recv_packet_raw( hv_vmbus_channel* channel, void* buffer, uint32_t buffer_len, uint32_t* buffer_actual_len, uint64_t* request_id) { int ret; uint32_t packetLen; hv_vm_packet_descriptor desc; *buffer_actual_len = 0; *request_id = 0; ret = hv_ring_buffer_peek( &channel->inbound, &desc, sizeof(hv_vm_packet_descriptor)); if (ret != 0) return (0); packetLen = desc.length8 << 3; *buffer_actual_len = packetLen; if (packetLen > buffer_len) return (ENOBUFS); *request_id = desc.transaction_id; /* Copy over the entire packet to the user buffer */ ret = hv_ring_buffer_read(&channel->inbound, buffer, packetLen, 0); return (0); } /** * Process a channel event notification */ static void VmbusProcessChannelEvent(void* context, int pending) { void* arg; uint32_t bytes_to_read; hv_vmbus_channel* channel = (hv_vmbus_channel*)context; boolean_t is_batched_reading; /** * Find the channel based on this relid and invokes * the channel callback to process the event */ if (channel == NULL) { return; } /** * To deal with the race condition where we might * receive a packet while the relevant driver is * being unloaded, dispatch the callback while * holding the channel lock. The unloading driver * will acquire the same channel lock to set the * callback to NULL. This closes the window. */ if (channel->on_channel_callback != NULL) { arg = channel->channel_callback_context; is_batched_reading = channel->batched_reading; /* * Optimize host to guest signaling by ensuring: * 1. While reading the channel, we disable interrupts from * host. * 2. Ensure that we process all posted messages from the host * before returning from this callback. * 3. Once we return, enable signaling from the host. Once this * state is set we check to see if additional packets are * available to read. In this case we repeat the process. */ do { if (is_batched_reading) hv_ring_buffer_read_begin(&channel->inbound); channel->on_channel_callback(arg); if (is_batched_reading) bytes_to_read = hv_ring_buffer_read_end(&channel->inbound); else bytes_to_read = 0; } while (is_batched_reading && (bytes_to_read != 0)); } } Index: head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c =================================================================== --- head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c (revision 302556) +++ head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c (revision 302557) @@ -1,782 +1,782 @@ /*- * Copyright (c) 2009-2012,2016 Microsoft Corp. * Copyright (c) 2012 NetApp Inc. * Copyright (c) 2012 Citrix Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include typedef void (*vmbus_chanmsg_proc_t) (struct vmbus_softc *, const struct vmbus_message *); -static void vmbus_channel_on_offer_internal( +static struct hv_vmbus_channel *hv_vmbus_allocate_channel(struct vmbus_softc *); +static void vmbus_channel_on_offer_internal(struct vmbus_softc *, const hv_vmbus_channel_offer_channel *offer); static void vmbus_channel_on_offer_rescind_internal(void *context); static void vmbus_channel_on_offer(struct vmbus_softc *, const struct vmbus_message *); static void vmbus_channel_on_open_result(struct vmbus_softc *, const struct vmbus_message *); static void vmbus_channel_on_offer_rescind(struct vmbus_softc *, const struct vmbus_message *); static void vmbus_channel_on_gpadl_created(struct vmbus_softc *, const struct vmbus_message *); static void vmbus_channel_on_gpadl_torndown(struct vmbus_softc *, const struct vmbus_message *); static void vmbus_channel_on_offers_delivered(struct vmbus_softc *, const struct vmbus_message *); static void vmbus_channel_on_version_response(struct vmbus_softc *, const struct vmbus_message *); /** * Channel message dispatch table */ static const vmbus_chanmsg_proc_t vmbus_chanmsg_process[HV_CHANNEL_MESSAGE_COUNT] = { [HV_CHANNEL_MESSAGE_OFFER_CHANNEL] = vmbus_channel_on_offer, [HV_CHANNEL_MESSAGE_RESCIND_CHANNEL_OFFER] = vmbus_channel_on_offer_rescind, [HV_CHANNEL_MESSAGE_ALL_OFFERS_DELIVERED] = vmbus_channel_on_offers_delivered, [HV_CHANNEL_MESSAGE_OPEN_CHANNEL_RESULT] = vmbus_channel_on_open_result, [HV_CHANNEL_MESSAGE_GPADL_CREATED] = vmbus_channel_on_gpadl_created, [HV_CHANNEL_MESSAGE_GPADL_TORNDOWN] = vmbus_channel_on_gpadl_torndown, [HV_CHANNEL_MESSAGE_VERSION_RESPONSE] = vmbus_channel_on_version_response }; typedef struct hv_work_item { struct task work; void (*callback)(void *); void* context; } hv_work_item; static struct mtx vmbus_chwait_lock; MTX_SYSINIT(vmbus_chwait_lk, &vmbus_chwait_lock, "vmbus primarych wait lock", MTX_DEF); static uint32_t vmbus_chancnt; static uint32_t vmbus_devcnt; #define VMBUS_CHANCNT_DONE 0x80000000 /** * Implementation of the work abstraction. */ static void work_item_callback(void *work, int pending) { struct hv_work_item *w = (struct hv_work_item *)work; w->callback(w->context); free(w, M_DEVBUF); } /** * @brief Create work item */ static int hv_queue_work_item( void (*callback)(void *), void *context) { struct hv_work_item *w = malloc(sizeof(struct hv_work_item), M_DEVBUF, M_NOWAIT); KASSERT(w != NULL, ("Error VMBUS: Failed to allocate WorkItem\n")); if (w == NULL) return (ENOMEM); w->callback = callback; w->context = context; TASK_INIT(&w->work, 0, work_item_callback, w); return (taskqueue_enqueue(taskqueue_thread, &w->work)); } /** * @brief Allocate and initialize a vmbus channel object */ -hv_vmbus_channel* -hv_vmbus_allocate_channel(void) +static struct hv_vmbus_channel * +hv_vmbus_allocate_channel(struct vmbus_softc *sc) { - hv_vmbus_channel* channel; + struct hv_vmbus_channel *channel; - channel = (hv_vmbus_channel*) malloc( - sizeof(hv_vmbus_channel), - M_DEVBUF, - M_WAITOK | M_ZERO); + channel = malloc(sizeof(*channel), M_DEVBUF, M_WAITOK | M_ZERO); + channel->vmbus_sc = sc; mtx_init(&channel->sc_lock, "vmbus multi channel", NULL, MTX_DEF); TAILQ_INIT(&channel->sc_list_anchor); return (channel); } /** * @brief Release the resources used by the vmbus channel object */ void hv_vmbus_free_vmbus_channel(hv_vmbus_channel* channel) { mtx_destroy(&channel->sc_lock); free(channel, M_DEVBUF); } /** * @brief Process the offer by creating a channel/device * associated with this offer */ static void vmbus_channel_process_offer(hv_vmbus_channel *new_channel) { hv_vmbus_channel* channel; int ret; uint32_t relid; relid = new_channel->offer_msg.child_rel_id; /* * Make sure this is a new offer */ mtx_lock(&hv_vmbus_g_connection.channel_lock); if (relid == 0) { /* * XXX channel0 will not be processed; skip it. */ printf("VMBUS: got channel0 offer\n"); } else { hv_vmbus_g_connection.channels[relid] = new_channel; } TAILQ_FOREACH(channel, &hv_vmbus_g_connection.channel_anchor, list_entry) { if (memcmp(&channel->offer_msg.offer.interface_type, &new_channel->offer_msg.offer.interface_type, sizeof(hv_guid)) == 0 && memcmp(&channel->offer_msg.offer.interface_instance, &new_channel->offer_msg.offer.interface_instance, sizeof(hv_guid)) == 0) break; } if (channel == NULL) { /* Install the new primary channel */ TAILQ_INSERT_TAIL(&hv_vmbus_g_connection.channel_anchor, new_channel, list_entry); } mtx_unlock(&hv_vmbus_g_connection.channel_lock); if (channel != NULL) { /* * Check if this is a sub channel. */ if (new_channel->offer_msg.offer.sub_channel_index != 0) { /* * It is a sub channel offer, process it. */ new_channel->primary_channel = channel; new_channel->device = channel->device; mtx_lock(&channel->sc_lock); TAILQ_INSERT_TAIL(&channel->sc_list_anchor, new_channel, sc_list_entry); mtx_unlock(&channel->sc_lock); if (bootverbose) { printf("VMBUS get multi-channel offer, " "rel=%u, sub=%u\n", new_channel->offer_msg.child_rel_id, new_channel->offer_msg.offer.sub_channel_index); } /* Insert new channel into channel_anchor. */ mtx_lock(&hv_vmbus_g_connection.channel_lock); TAILQ_INSERT_TAIL(&hv_vmbus_g_connection.channel_anchor, new_channel, list_entry); mtx_unlock(&hv_vmbus_g_connection.channel_lock); if(bootverbose) printf("VMBUS: new multi-channel offer <%p>, " "its primary channel is <%p>.\n", new_channel, new_channel->primary_channel); new_channel->state = HV_CHANNEL_OPEN_STATE; /* * Bump up sub-channel count and notify anyone that is * interested in this sub-channel, after this sub-channel * is setup. */ mtx_lock(&channel->sc_lock); channel->subchan_cnt++; mtx_unlock(&channel->sc_lock); wakeup(channel); return; } printf("VMBUS: duplicated primary channel%u\n", new_channel->offer_msg.child_rel_id); hv_vmbus_free_vmbus_channel(new_channel); return; } new_channel->state = HV_CHANNEL_OPEN_STATE; /* * Start the process of binding this offer to the driver * (We need to set the device field before calling * hv_vmbus_child_device_add()) */ new_channel->device = hv_vmbus_child_device_create( new_channel->offer_msg.offer.interface_type, new_channel->offer_msg.offer.interface_instance, new_channel); /* * Add the new device to the bus. This will kick off device-driver * binding which eventually invokes the device driver's AddDevice() * method. */ ret = hv_vmbus_child_device_register(new_channel->device); if (ret != 0) { mtx_lock(&hv_vmbus_g_connection.channel_lock); TAILQ_REMOVE(&hv_vmbus_g_connection.channel_anchor, new_channel, list_entry); mtx_unlock(&hv_vmbus_g_connection.channel_lock); hv_vmbus_free_vmbus_channel(new_channel); } mtx_lock(&vmbus_chwait_lock); vmbus_devcnt++; mtx_unlock(&vmbus_chwait_lock); wakeup(&vmbus_devcnt); } void vmbus_channel_cpu_set(struct hv_vmbus_channel *chan, int cpu) { KASSERT(cpu >= 0 && cpu < mp_ncpus, ("invalid cpu %d", cpu)); if (hv_vmbus_protocal_version == HV_VMBUS_VERSION_WS2008 || hv_vmbus_protocal_version == HV_VMBUS_VERSION_WIN7) { /* Only cpu0 is supported */ cpu = 0; } chan->target_cpu = cpu; - chan->target_vcpu = VMBUS_PCPU_GET(vmbus_get_softc(), vcpuid, cpu); + chan->target_vcpu = VMBUS_PCPU_GET(chan->vmbus_sc, vcpuid, cpu); if (bootverbose) { printf("vmbus_chan%u: assigned to cpu%u [vcpu%u]\n", chan->offer_msg.child_rel_id, chan->target_cpu, chan->target_vcpu); } } /** * Array of device guids that are performance critical. We try to distribute * the interrupt load for these devices across all online cpus. */ static const hv_guid high_perf_devices[] = { {HV_NIC_GUID, }, {HV_IDE_GUID, }, {HV_SCSI_GUID, }, }; enum { PERF_CHN_NIC = 0, PERF_CHN_IDE, PERF_CHN_SCSI, MAX_PERF_CHN, }; /* * We use this static number to distribute the channel interrupt load. */ static uint32_t next_vcpu; /** * Starting with Win8, we can statically distribute the incoming * channel interrupt load by binding a channel to VCPU. We * implement here a simple round robin scheme for distributing * the interrupt load. * We will bind channels that are not performance critical to cpu 0 and * performance critical channels (IDE, SCSI and Network) will be uniformly * distributed across all available CPUs. */ static void vmbus_channel_select_defcpu(struct hv_vmbus_channel *channel) { uint32_t current_cpu; int i; boolean_t is_perf_channel = FALSE; const hv_guid *guid = &channel->offer_msg.offer.interface_type; for (i = PERF_CHN_NIC; i < MAX_PERF_CHN; i++) { if (memcmp(guid->data, high_perf_devices[i].data, sizeof(hv_guid)) == 0) { is_perf_channel = TRUE; break; } } if (!is_perf_channel) { /* Stick to cpu0 */ vmbus_channel_cpu_set(channel, 0); return; } /* mp_ncpus should have the number cpus currently online */ current_cpu = (++next_vcpu % mp_ncpus); vmbus_channel_cpu_set(channel, current_cpu); } /** * @brief Handler for channel offers from Hyper-V/Azure * * Handler for channel offers from vmbus in parent partition. */ static void vmbus_channel_on_offer(struct vmbus_softc *sc, const struct vmbus_message *msg) { const hv_vmbus_channel_offer_channel *offer; mtx_lock(&vmbus_chwait_lock); if ((vmbus_chancnt & VMBUS_CHANCNT_DONE) == 0) vmbus_chancnt++; mtx_unlock(&vmbus_chwait_lock); offer = (const hv_vmbus_channel_offer_channel *)msg->msg_data; - vmbus_channel_on_offer_internal(offer); + vmbus_channel_on_offer_internal(sc, offer); } static void -vmbus_channel_on_offer_internal(const hv_vmbus_channel_offer_channel *offer) +vmbus_channel_on_offer_internal(struct vmbus_softc *sc, + const hv_vmbus_channel_offer_channel *offer) { hv_vmbus_channel* new_channel; /* Allocate the channel object and save this offer */ - new_channel = hv_vmbus_allocate_channel(); + new_channel = hv_vmbus_allocate_channel(sc); /* * By default we setup state to enable batched * reading. A specific service can choose to * disable this prior to opening the channel. */ new_channel->batched_reading = TRUE; new_channel->signal_event_param = (hv_vmbus_input_signal_event *) (HV_ALIGN_UP((unsigned long) &new_channel->signal_event_buffer, HV_HYPERCALL_PARAM_ALIGN)); new_channel->signal_event_param->connection_id.as_uint32_t = 0; new_channel->signal_event_param->connection_id.u.id = HV_VMBUS_EVENT_CONNECTION_ID; new_channel->signal_event_param->flag_number = 0; new_channel->signal_event_param->rsvd_z = 0; if (hv_vmbus_protocal_version != HV_VMBUS_VERSION_WS2008) { new_channel->is_dedicated_interrupt = (offer->is_dedicated_interrupt != 0); new_channel->signal_event_param->connection_id.u.id = offer->connection_id; } memcpy(&new_channel->offer_msg, offer, sizeof(hv_vmbus_channel_offer_channel)); new_channel->monitor_group = (uint8_t) offer->monitor_id / 32; new_channel->monitor_bit = (uint8_t) offer->monitor_id % 32; /* Select default cpu for this channel. */ vmbus_channel_select_defcpu(new_channel); vmbus_channel_process_offer(new_channel); } /** * @brief Rescind offer handler. * * We queue a work item to process this offer * synchronously */ static void vmbus_channel_on_offer_rescind(struct vmbus_softc *sc, const struct vmbus_message *msg) { const hv_vmbus_channel_msg_header *hdr = (const hv_vmbus_channel_msg_header *)msg->msg_data; const hv_vmbus_channel_rescind_offer *rescind; hv_vmbus_channel* channel; rescind = (const hv_vmbus_channel_rescind_offer *)hdr; channel = hv_vmbus_g_connection.channels[rescind->child_rel_id]; if (channel == NULL) return; hv_queue_work_item(vmbus_channel_on_offer_rescind_internal, channel); hv_vmbus_g_connection.channels[rescind->child_rel_id] = NULL; } static void vmbus_channel_on_offer_rescind_internal(void *context) { hv_vmbus_channel* channel; channel = (hv_vmbus_channel*)context; if (HV_VMBUS_CHAN_ISPRIMARY(channel)) { /* Only primary channel owns the hv_device */ hv_vmbus_child_device_unregister(channel->device); } } /** * * @brief Invoked when all offers have been delivered. */ static void vmbus_channel_on_offers_delivered(struct vmbus_softc *sc __unused, const struct vmbus_message *msg __unused) { mtx_lock(&vmbus_chwait_lock); vmbus_chancnt |= VMBUS_CHANCNT_DONE; mtx_unlock(&vmbus_chwait_lock); wakeup(&vmbus_chancnt); } /** * @brief Open result handler. * * This is invoked when we received a response * to our channel open request. Find the matching request, copy the * response and signal the requesting thread. */ static void vmbus_channel_on_open_result(struct vmbus_softc *sc, const struct vmbus_message *msg) { const hv_vmbus_channel_msg_header *hdr = (const hv_vmbus_channel_msg_header *)msg->msg_data; const hv_vmbus_channel_open_result *result; hv_vmbus_channel_msg_info* msg_info; hv_vmbus_channel_msg_header* requestHeader; hv_vmbus_channel_open_channel* openMsg; result = (const hv_vmbus_channel_open_result *)hdr; /* * Find the open msg, copy the result and signal/unblock the wait event */ mtx_lock(&hv_vmbus_g_connection.channel_msg_lock); TAILQ_FOREACH(msg_info, &hv_vmbus_g_connection.channel_msg_anchor, msg_list_entry) { requestHeader = (hv_vmbus_channel_msg_header*) msg_info->msg; if (requestHeader->message_type == HV_CHANNEL_MESSAGE_OPEN_CHANNEL) { openMsg = (hv_vmbus_channel_open_channel*) msg_info->msg; if (openMsg->child_rel_id == result->child_rel_id && openMsg->open_id == result->open_id) { memcpy(&msg_info->response.open_result, result, sizeof(hv_vmbus_channel_open_result)); sema_post(&msg_info->wait_sema); break; } } } mtx_unlock(&hv_vmbus_g_connection.channel_msg_lock); } /** * @brief GPADL created handler. * * This is invoked when we received a response * to our gpadl create request. Find the matching request, copy the * response and signal the requesting thread. */ static void vmbus_channel_on_gpadl_created(struct vmbus_softc *sc, const struct vmbus_message *msg) { const hv_vmbus_channel_msg_header *hdr = (const hv_vmbus_channel_msg_header *)msg->msg_data; const hv_vmbus_channel_gpadl_created *gpadl_created; hv_vmbus_channel_msg_info* msg_info; hv_vmbus_channel_msg_header* request_header; hv_vmbus_channel_gpadl_header* gpadl_header; gpadl_created = (const hv_vmbus_channel_gpadl_created *)hdr; /* Find the establish msg, copy the result and signal/unblock * the wait event */ mtx_lock(&hv_vmbus_g_connection.channel_msg_lock); TAILQ_FOREACH(msg_info, &hv_vmbus_g_connection.channel_msg_anchor, msg_list_entry) { request_header = (hv_vmbus_channel_msg_header*) msg_info->msg; if (request_header->message_type == HV_CHANNEL_MESSAGEL_GPADL_HEADER) { gpadl_header = (hv_vmbus_channel_gpadl_header*) request_header; if ((gpadl_created->child_rel_id == gpadl_header->child_rel_id) && (gpadl_created->gpadl == gpadl_header->gpadl)) { memcpy(&msg_info->response.gpadl_created, gpadl_created, sizeof(hv_vmbus_channel_gpadl_created)); sema_post(&msg_info->wait_sema); break; } } } mtx_unlock(&hv_vmbus_g_connection.channel_msg_lock); } /** * @brief GPADL torndown handler. * * This is invoked when we received a respons * to our gpadl teardown request. Find the matching request, copy the * response and signal the requesting thread */ static void vmbus_channel_on_gpadl_torndown(struct vmbus_softc *sc, const struct vmbus_message *msg) { const hv_vmbus_channel_msg_header *hdr = (const hv_vmbus_channel_msg_header *)msg->msg_data; const hv_vmbus_channel_gpadl_torndown *gpadl_torndown; hv_vmbus_channel_msg_info* msg_info; hv_vmbus_channel_msg_header* requestHeader; hv_vmbus_channel_gpadl_teardown* gpadlTeardown; gpadl_torndown = (const hv_vmbus_channel_gpadl_torndown *)hdr; /* * Find the open msg, copy the result and signal/unblock the * wait event. */ mtx_lock(&hv_vmbus_g_connection.channel_msg_lock); TAILQ_FOREACH(msg_info, &hv_vmbus_g_connection.channel_msg_anchor, msg_list_entry) { requestHeader = (hv_vmbus_channel_msg_header*) msg_info->msg; if (requestHeader->message_type == HV_CHANNEL_MESSAGE_GPADL_TEARDOWN) { gpadlTeardown = (hv_vmbus_channel_gpadl_teardown*) requestHeader; if (gpadl_torndown->gpadl == gpadlTeardown->gpadl) { memcpy(&msg_info->response.gpadl_torndown, gpadl_torndown, sizeof(hv_vmbus_channel_gpadl_torndown)); sema_post(&msg_info->wait_sema); break; } } } mtx_unlock(&hv_vmbus_g_connection.channel_msg_lock); } static void vmbus_channel_on_version_response(struct vmbus_softc *sc, const struct vmbus_message *msg) { vmbus_msghc_wakeup(sc, msg); } /** * @brief Release channels that are unattached/unconnected (i.e., no drivers associated) */ void hv_vmbus_release_unattached_channels(void) { hv_vmbus_channel *channel; mtx_lock(&hv_vmbus_g_connection.channel_lock); while (!TAILQ_EMPTY(&hv_vmbus_g_connection.channel_anchor)) { channel = TAILQ_FIRST(&hv_vmbus_g_connection.channel_anchor); TAILQ_REMOVE(&hv_vmbus_g_connection.channel_anchor, channel, list_entry); if (HV_VMBUS_CHAN_ISPRIMARY(channel)) { /* Only primary channel owns the hv_device */ hv_vmbus_child_device_unregister(channel->device); } hv_vmbus_free_vmbus_channel(channel); } bzero(hv_vmbus_g_connection.channels, sizeof(hv_vmbus_channel*) * VMBUS_CHAN_MAX); mtx_unlock(&hv_vmbus_g_connection.channel_lock); } /** * @brief Select the best outgoing channel * * The channel whose vcpu binding is closest to the currect vcpu will * be selected. * If no multi-channel, always select primary channel * * @param primary - primary channel */ struct hv_vmbus_channel * vmbus_select_outgoing_channel(struct hv_vmbus_channel *primary) { hv_vmbus_channel *new_channel = NULL; hv_vmbus_channel *outgoing_channel = primary; int old_cpu_distance = 0; int new_cpu_distance = 0; int cur_vcpu = 0; int smp_pro_id = PCPU_GET(cpuid); if (TAILQ_EMPTY(&primary->sc_list_anchor)) { return outgoing_channel; } if (smp_pro_id >= MAXCPU) { return outgoing_channel; } - cur_vcpu = VMBUS_PCPU_GET(vmbus_get_softc(), vcpuid, smp_pro_id); + cur_vcpu = VMBUS_PCPU_GET(primary->vmbus_sc, vcpuid, smp_pro_id); TAILQ_FOREACH(new_channel, &primary->sc_list_anchor, sc_list_entry) { if (new_channel->state != HV_CHANNEL_OPENED_STATE){ continue; } if (new_channel->target_vcpu == cur_vcpu){ return new_channel; } old_cpu_distance = ((outgoing_channel->target_vcpu > cur_vcpu) ? (outgoing_channel->target_vcpu - cur_vcpu) : (cur_vcpu - outgoing_channel->target_vcpu)); new_cpu_distance = ((new_channel->target_vcpu > cur_vcpu) ? (new_channel->target_vcpu - cur_vcpu) : (cur_vcpu - new_channel->target_vcpu)); if (old_cpu_distance < new_cpu_distance) { continue; } outgoing_channel = new_channel; } return(outgoing_channel); } void vmbus_scan(void) { uint32_t chancnt; mtx_lock(&vmbus_chwait_lock); while ((vmbus_chancnt & VMBUS_CHANCNT_DONE) == 0) mtx_sleep(&vmbus_chancnt, &vmbus_chwait_lock, 0, "waitch", 0); chancnt = vmbus_chancnt & ~VMBUS_CHANCNT_DONE; while (vmbus_devcnt != chancnt) mtx_sleep(&vmbus_devcnt, &vmbus_chwait_lock, 0, "waitdev", 0); mtx_unlock(&vmbus_chwait_lock); } struct hv_vmbus_channel ** vmbus_get_subchan(struct hv_vmbus_channel *pri_chan, int subchan_cnt) { struct hv_vmbus_channel **ret, *chan; int i; ret = malloc(subchan_cnt * sizeof(struct hv_vmbus_channel *), M_TEMP, M_WAITOK); mtx_lock(&pri_chan->sc_lock); while (pri_chan->subchan_cnt < subchan_cnt) mtx_sleep(pri_chan, &pri_chan->sc_lock, 0, "subch", 0); i = 0; TAILQ_FOREACH(chan, &pri_chan->sc_list_anchor, sc_list_entry) { /* TODO: refcnt chan */ ret[i] = chan; ++i; if (i == subchan_cnt) break; } KASSERT(i == subchan_cnt, ("invalid subchan count %d, should be %d", pri_chan->subchan_cnt, subchan_cnt)); mtx_unlock(&pri_chan->sc_lock); return ret; } void vmbus_rel_subchan(struct hv_vmbus_channel **subchan, int subchan_cnt __unused) { free(subchan, M_TEMP); } void vmbus_chan_msgproc(struct vmbus_softc *sc, const struct vmbus_message *msg) { vmbus_chanmsg_proc_t msg_proc; uint32_t msg_type; msg_type = ((const struct vmbus_chanmsg_hdr *)msg->msg_data)->chm_type; if (msg_type >= HV_CHANNEL_MESSAGE_COUNT) { device_printf(sc->vmbus_dev, "unknown message type 0x%x\n", msg_type); return; } msg_proc = vmbus_chanmsg_process[msg_type]; if (msg_proc != NULL) msg_proc(sc, msg); } Index: head/sys/dev/hyperv/vmbus/hv_connection.c =================================================================== --- head/sys/dev/hyperv/vmbus/hv_connection.c (revision 302556) +++ head/sys/dev/hyperv/vmbus/hv_connection.c (revision 302557) @@ -1,244 +1,244 @@ /*- * Copyright (c) 2009-2012,2016 Microsoft Corp. * Copyright (c) 2012 NetApp Inc. * Copyright (c) 2012 Citrix Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Globals */ hv_vmbus_connection hv_vmbus_g_connection = { .connect_state = HV_DISCONNECTED, .next_gpadl_handle = 0xE1E10, }; uint32_t hv_vmbus_protocal_version; /** * Send a connect request on the partition service connection */ int hv_vmbus_connect(struct vmbus_softc *sc) { /** * Make sure we are not connecting or connected */ if (hv_vmbus_g_connection.connect_state != HV_DISCONNECTED) { return (-1); } /** * Initialize the vmbus connection */ hv_vmbus_g_connection.connect_state = HV_CONNECTING; TAILQ_INIT(&hv_vmbus_g_connection.channel_msg_anchor); mtx_init(&hv_vmbus_g_connection.channel_msg_lock, "vmbus channel msg", NULL, MTX_DEF); TAILQ_INIT(&hv_vmbus_g_connection.channel_anchor); mtx_init(&hv_vmbus_g_connection.channel_lock, "vmbus channel", NULL, MTX_DEF); hv_vmbus_g_connection.channels = malloc(sizeof(hv_vmbus_channel*) * VMBUS_CHAN_MAX, M_DEVBUF, M_WAITOK | M_ZERO); hv_vmbus_g_connection.connect_state = HV_CONNECTED; return (0); } /** * Send a disconnect request on the partition service connection */ int hv_vmbus_disconnect(void) { mtx_destroy(&hv_vmbus_g_connection.channel_msg_lock); free(hv_vmbus_g_connection.channels, M_DEVBUF); hv_vmbus_g_connection.connect_state = HV_DISCONNECTED; return (0); } static __inline void vmbus_event_flags_proc(volatile u_long *event_flags, int flag_cnt) { int f; for (f = 0; f < flag_cnt; ++f) { uint32_t rel_id_base; u_long flags; int bit; if (event_flags[f] == 0) continue; flags = atomic_swap_long(&event_flags[f], 0); rel_id_base = f << VMBUS_EVTFLAG_SHIFT; while ((bit = ffsl(flags)) != 0) { struct hv_vmbus_channel *channel; uint32_t rel_id; --bit; /* NOTE: ffsl is 1-based */ flags &= ~(1UL << bit); rel_id = rel_id_base + bit; channel = hv_vmbus_g_connection.channels[rel_id]; /* if channel is closed or closing */ if (channel == NULL || channel->rxq == NULL) continue; if (channel->batched_reading) hv_ring_buffer_read_begin(&channel->inbound); taskqueue_enqueue(channel->rxq, &channel->channel_task); } } } void vmbus_event_proc(struct vmbus_softc *sc, int cpu) { struct vmbus_evtflags *eventf; /* * On Host with Win8 or above, the event page can be checked directly * to get the id of the channel that has the pending interrupt. */ eventf = VMBUS_PCPU_GET(sc, event_flags, cpu) + VMBUS_SINT_MESSAGE; vmbus_event_flags_proc(eventf->evt_flags, VMBUS_PCPU_GET(sc, event_flags_cnt, cpu)); } void vmbus_event_proc_compat(struct vmbus_softc *sc, int cpu) { struct vmbus_evtflags *eventf; eventf = VMBUS_PCPU_GET(sc, event_flags, cpu) + VMBUS_SINT_MESSAGE; if (atomic_testandclear_long(&eventf->evt_flags[0], 0)) { vmbus_event_flags_proc(sc->vmbus_rx_evtflags, VMBUS_CHAN_MAX_COMPAT >> VMBUS_EVTFLAG_SHIFT); } } /** * Send a msg on the vmbus's message connection */ int hv_vmbus_post_message(void *buffer, size_t bufferLen) { hv_vmbus_connection_id connId; sbintime_t time = SBT_1MS; int retries; int ret; connId.as_uint32_t = 0; connId.u.id = HV_VMBUS_MESSAGE_CONNECTION_ID; /* * We retry to cope with transient failures caused by host side's * insufficient resources. 20 times should suffice in practice. */ for (retries = 0; retries < 20; retries++) { ret = hv_vmbus_post_msg_via_msg_ipc(connId, HYPERV_MSGTYPE_CHANNEL, buffer, bufferLen); if (ret == HV_STATUS_SUCCESS) return (0); pause_sbt("pstmsg", time, 0, C_HARDCLOCK); if (time < SBT_1S * 2) time *= 2; } KASSERT(ret == HV_STATUS_SUCCESS, ("Error VMBUS: Message Post Failed, ret=%d\n", ret)); return (EAGAIN); } /** * Send an event notification to the parent */ int hv_vmbus_set_event(hv_vmbus_channel *channel) { - struct vmbus_softc *sc = vmbus_get_softc(); + struct vmbus_softc *sc = channel->vmbus_sc; int ret = 0; uint32_t chanid = channel->offer_msg.child_rel_id; atomic_set_long(&sc->vmbus_tx_evtflags[chanid >> VMBUS_EVTFLAG_SHIFT], 1UL << (chanid & VMBUS_EVTFLAG_MASK)); ret = hv_vmbus_signal_event(channel->signal_event_param); return (ret); } void vmbus_on_channel_open(const struct hv_vmbus_channel *chan) { volatile int *flag_cnt_ptr; int flag_cnt; flag_cnt = (chan->offer_msg.child_rel_id / VMBUS_EVTFLAG_LEN) + 1; - flag_cnt_ptr = VMBUS_PCPU_PTR(vmbus_get_softc(), event_flags_cnt, + flag_cnt_ptr = VMBUS_PCPU_PTR(chan->vmbus_sc, event_flags_cnt, chan->target_cpu); for (;;) { int old_flag_cnt; old_flag_cnt = *flag_cnt_ptr; if (old_flag_cnt >= flag_cnt) break; if (atomic_cmpset_int(flag_cnt_ptr, old_flag_cnt, flag_cnt)) { if (bootverbose) { printf("VMBUS: channel%u update " "cpu%d flag_cnt to %d\n", chan->offer_msg.child_rel_id, chan->target_cpu, flag_cnt); } break; } } } Index: head/sys/dev/hyperv/vmbus/hv_vmbus_priv.h =================================================================== --- head/sys/dev/hyperv/vmbus/hv_vmbus_priv.h (revision 302556) +++ head/sys/dev/hyperv/vmbus/hv_vmbus_priv.h (revision 302557) @@ -1,432 +1,431 @@ /*- * Copyright (c) 2009-2012,2016 Microsoft Corp. * Copyright (c) 2012 NetApp Inc. * Copyright (c) 2012 Citrix Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice unmodified, this list of conditions, and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD$ */ #ifndef __HYPERV_PRIV_H__ #define __HYPERV_PRIV_H__ #include #include #include #include #include /* * Status codes for hypervisor operations. */ typedef uint16_t hv_vmbus_status; #define HV_MESSAGE_SIZE (256) #define HV_MESSAGE_PAYLOAD_BYTE_COUNT (240) #define HV_MESSAGE_PAYLOAD_QWORD_COUNT (30) #define HV_ANY_VP (0xFFFFFFFF) /* * MessageId: HV_STATUS_INSUFFICIENT_BUFFERS * MessageText: * You did not supply enough message buffers to send a message. */ #define HV_STATUS_SUCCESS ((uint16_t)0) #define HV_STATUS_INSUFFICIENT_BUFFERS ((uint16_t)0x0013) typedef void (*hv_vmbus_channel_callback)(void *context); typedef struct { void* data; uint32_t length; } hv_vmbus_sg_buffer_list; typedef struct { uint32_t current_interrupt_mask; uint32_t current_read_index; uint32_t current_write_index; uint32_t bytes_avail_to_read; uint32_t bytes_avail_to_write; } hv_vmbus_ring_buffer_debug_info; typedef struct { uint32_t rel_id; hv_vmbus_channel_state state; hv_guid interface_type; hv_guid interface_instance; uint32_t monitor_id; uint32_t server_monitor_pending; uint32_t server_monitor_latency; uint32_t server_monitor_connection_id; uint32_t client_monitor_pending; uint32_t client_monitor_latency; uint32_t client_monitor_connection_id; hv_vmbus_ring_buffer_debug_info inbound; hv_vmbus_ring_buffer_debug_info outbound; } hv_vmbus_channel_debug_info; typedef union { hv_vmbus_channel_version_supported version_supported; hv_vmbus_channel_open_result open_result; hv_vmbus_channel_gpadl_torndown gpadl_torndown; hv_vmbus_channel_gpadl_created gpadl_created; } hv_vmbus_channel_msg_response; /* * Represents each channel msg on the vmbus connection * This is a variable-size data structure depending on * the msg type itself */ typedef struct hv_vmbus_channel_msg_info { /* * Bookkeeping stuff */ TAILQ_ENTRY(hv_vmbus_channel_msg_info) msg_list_entry; /* * So far, this is only used to handle * gpadl body message */ TAILQ_HEAD(, hv_vmbus_channel_msg_info) sub_msg_list_anchor; /* * Synchronize the request/response if * needed. * KYS: Use a semaphore for now. * Not perf critical. */ struct sema wait_sema; hv_vmbus_channel_msg_response response; uint32_t message_size; /** * The channel message that goes out on * the "wire". It will contain at * minimum the * hv_vmbus_channel_msg_header * header. */ unsigned char msg[0]; } hv_vmbus_channel_msg_info; /* * The format must be the same as hv_vm_data_gpa_direct */ typedef struct hv_vmbus_channel_packet_page_buffer { uint16_t type; uint16_t data_offset8; uint16_t length8; uint16_t flags; uint64_t transaction_id; uint32_t reserved; uint32_t range_count; hv_vmbus_page_buffer range[HV_MAX_PAGE_BUFFER_COUNT]; } __packed hv_vmbus_channel_packet_page_buffer; /* * The format must be the same as hv_vm_data_gpa_direct */ typedef struct hv_vmbus_channel_packet_multipage_buffer { uint16_t type; uint16_t data_offset8; uint16_t length8; uint16_t flags; uint64_t transaction_id; uint32_t reserved; uint32_t range_count; /* Always 1 in this case */ hv_vmbus_multipage_buffer range; } __packed hv_vmbus_channel_packet_multipage_buffer; enum { HV_VMBUS_MESSAGE_CONNECTION_ID = 1, HV_VMBUS_MESSAGE_PORT_ID = 1, HV_VMBUS_EVENT_CONNECTION_ID = 2, HV_VMBUS_EVENT_PORT_ID = 2, HV_VMBUS_MONITOR_CONNECTION_ID = 3, HV_VMBUS_MONITOR_PORT_ID = 3, }; #define HV_PRESENT_BIT 0x80000000 #define HV_HYPERCALL_PARAM_ALIGN sizeof(uint64_t) /* * Define hypervisor message types */ typedef enum { HV_MESSAGE_TYPE_NONE = 0x00000000, /* * Memory access messages */ HV_MESSAGE_TYPE_UNMAPPED_GPA = 0x80000000, HV_MESSAGE_TYPE_GPA_INTERCEPT = 0x80000001, /* * Timer notification messages */ HV_MESSAGE_TIMER_EXPIRED = 0x80000010, /* * Error messages */ HV_MESSAGE_TYPE_INVALID_VP_REGISTER_VALUE = 0x80000020, HV_MESSAGE_TYPE_UNRECOVERABLE_EXCEPTION = 0x80000021, HV_MESSAGE_TYPE_UNSUPPORTED_FEATURE = 0x80000022, /* * Trace buffer complete messages */ HV_MESSAGE_TYPE_EVENT_LOG_BUFFER_COMPLETE = 0x80000040, /* * Platform-specific processor intercept messages */ HV_MESSAGE_TYPE_X64_IO_PORT_INTERCEPT = 0x80010000, HV_MESSAGE_TYPE_X64_MSR_INTERCEPT = 0x80010001, HV_MESSAGE_TYPE_X64_CPU_INTERCEPT = 0x80010002, HV_MESSAGE_TYPE_X64_EXCEPTION_INTERCEPT = 0x80010003, HV_MESSAGE_TYPE_X64_APIC_EOI = 0x80010004, HV_MESSAGE_TYPE_X64_LEGACY_FP_ERROR = 0x80010005 } hv_vmbus_msg_type; /* * Define port identifier type */ typedef union _hv_vmbus_port_id { uint32_t as_uint32_t; struct { uint32_t id:24; uint32_t reserved:8; } u ; } hv_vmbus_port_id; typedef uint64_t hv_vmbus_partition_id; /* * VM Bus connection states */ typedef enum { HV_DISCONNECTED, HV_CONNECTING, HV_CONNECTED, HV_DISCONNECTING } hv_vmbus_connect_state; #define HV_MAX_SIZE_CHANNEL_MESSAGE HV_MESSAGE_PAYLOAD_BYTE_COUNT typedef struct { hv_vmbus_connect_state connect_state; uint32_t next_gpadl_handle; TAILQ_HEAD(, hv_vmbus_channel_msg_info) channel_msg_anchor; struct mtx channel_msg_lock; /** * List of primary channels. Sub channels will be linked * under their primary channel. */ TAILQ_HEAD(, hv_vmbus_channel) channel_anchor; struct mtx channel_lock; /** * channel table for fast lookup through id. */ hv_vmbus_channel **channels; } hv_vmbus_connection; typedef union { uint32_t as_uint32_t; struct { uint32_t group_enable :4; uint32_t rsvd_z :28; } u; } hv_vmbus_monitor_trigger_state; typedef union { uint64_t as_uint64_t; struct { uint32_t pending; uint32_t armed; } u; } hv_vmbus_monitor_trigger_group; typedef struct { hv_vmbus_connection_id connection_id; uint16_t flag_number; uint16_t rsvd_z; } hv_vmbus_monitor_parameter; /* * hv_vmbus_monitor_page Layout * ------------------------------------------------------ * | 0 | trigger_state (4 bytes) | Rsvd1 (4 bytes) | * | 8 | trigger_group[0] | * | 10 | trigger_group[1] | * | 18 | trigger_group[2] | * | 20 | trigger_group[3] | * | 28 | Rsvd2[0] | * | 30 | Rsvd2[1] | * | 38 | Rsvd2[2] | * | 40 | next_check_time[0][0] | next_check_time[0][1] | * | ... | * | 240 | latency[0][0..3] | * | 340 | Rsvz3[0] | * | 440 | parameter[0][0] | * | 448 | parameter[0][1] | * | ... | * | 840 | Rsvd4[0] | * ------------------------------------------------------ */ typedef struct { hv_vmbus_monitor_trigger_state trigger_state; uint32_t rsvd_z1; hv_vmbus_monitor_trigger_group trigger_group[4]; uint64_t rsvd_z2[3]; int32_t next_check_time[4][32]; uint16_t latency[4][32]; uint64_t rsvd_z3[32]; hv_vmbus_monitor_parameter parameter[4][32]; uint8_t rsvd_z4[1984]; } hv_vmbus_monitor_page; /* * Define the hv_vmbus_post_message hypercall input structure */ typedef struct { hv_vmbus_connection_id connection_id; uint32_t reserved; hv_vmbus_msg_type message_type; uint32_t payload_size; uint64_t payload[HV_MESSAGE_PAYLOAD_QWORD_COUNT]; } hv_vmbus_input_post_message; /* * Declare the various hypercall operations */ typedef enum { HV_CALL_POST_MESSAGE = 0x005c, HV_CALL_SIGNAL_EVENT = 0x005d, } hv_vmbus_call_code; /** * Global variables */ extern hv_vmbus_connection hv_vmbus_g_connection; /* * Private, VM Bus functions */ struct sysctl_ctx_list; struct sysctl_oid_list; void hv_ring_buffer_stat( struct sysctl_ctx_list *ctx, struct sysctl_oid_list *tree_node, hv_vmbus_ring_buffer_info *rbi, const char *desc); int hv_vmbus_ring_buffer_init( hv_vmbus_ring_buffer_info *ring_info, void *buffer, uint32_t buffer_len); void hv_ring_buffer_cleanup( hv_vmbus_ring_buffer_info *ring_info); int hv_ring_buffer_write( hv_vmbus_ring_buffer_info *ring_info, hv_vmbus_sg_buffer_list sg_buffers[], uint32_t sg_buff_count, boolean_t *need_sig); int hv_ring_buffer_peek( hv_vmbus_ring_buffer_info *ring_info, void *buffer, uint32_t buffer_len); int hv_ring_buffer_read( hv_vmbus_ring_buffer_info *ring_info, void *buffer, uint32_t buffer_len, uint32_t offset); uint32_t hv_vmbus_get_ring_buffer_interrupt_mask( hv_vmbus_ring_buffer_info *ring_info); void hv_vmbus_dump_ring_info( hv_vmbus_ring_buffer_info *ring_info, char *prefix); void hv_ring_buffer_read_begin( hv_vmbus_ring_buffer_info *ring_info); uint32_t hv_ring_buffer_read_end( hv_vmbus_ring_buffer_info *ring_info); -hv_vmbus_channel* hv_vmbus_allocate_channel(void); void hv_vmbus_free_vmbus_channel(hv_vmbus_channel *channel); void hv_vmbus_release_unattached_channels(void); uint16_t hv_vmbus_post_msg_via_msg_ipc( hv_vmbus_connection_id connection_id, hv_vmbus_msg_type message_type, void *payload, size_t payload_size); uint16_t hv_vmbus_signal_event(void *con_id); struct hv_device* hv_vmbus_child_device_create( hv_guid device_type, hv_guid device_instance, hv_vmbus_channel *channel); int hv_vmbus_child_device_register( struct hv_device *child_dev); int hv_vmbus_child_device_unregister( struct hv_device *child_dev); /** * Connection interfaces */ struct vmbus_softc; int hv_vmbus_connect(struct vmbus_softc *); int hv_vmbus_disconnect(void); int hv_vmbus_post_message(void *buffer, size_t buf_size); int hv_vmbus_set_event(hv_vmbus_channel *channel); /* Wait for device creation */ void vmbus_scan(void); #endif /* __HYPERV_PRIV_H__ */