Index: head/sys/dev/hyperv/include/hyperv.h =================================================================== --- head/sys/dev/hyperv/include/hyperv.h (revision 302618) +++ head/sys/dev/hyperv/include/hyperv.h (revision 302619) @@ -1,745 +1,726 @@ /*- * 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 +#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 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; /* * 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; typedef struct { hv_vmbus_channel_msg_header header; uint32_t child_rel_id; } __packed hv_vmbus_channel_relid_released; #define HW_MACADDR_LEN 6 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; + struct hypercall_sigevt_in *ch_sigevt; + struct hyperv_dma ch_sigevt_dma; /* * 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; struct task ch_detach_task; } 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/include/hyperv_busdma.h =================================================================== --- head/sys/dev/hyperv/include/hyperv_busdma.h (revision 302618) +++ head/sys/dev/hyperv/include/hyperv_busdma.h (revision 302619) @@ -1,45 +1,49 @@ /*- * Copyright (c) 2016 Microsoft Corp. * 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_BUSDMA_H_ #define _HYPERV_BUSDMA_H_ +#include +#include +#include + struct hyperv_dma { bus_addr_t hv_paddr; bus_dma_tag_t hv_dtag; bus_dmamap_t hv_dmap; }; void hyperv_dma_map_paddr(void *arg, bus_dma_segment_t *segs, int nseg, int error); void *hyperv_dmamem_alloc(bus_dma_tag_t parent_dtag, bus_size_t alignment, bus_addr_t boundary, bus_size_t size, struct hyperv_dma *dma, int flags); void hyperv_dmamem_free(struct hyperv_dma *dma, void *ptr); #endif /* !_HYPERV_BUSDMA_H_ */ Index: head/sys/dev/hyperv/vmbus/hv_channel.c =================================================================== --- head/sys/dev/hyperv/vmbus/hv_channel.c (revision 302618) +++ head/sys/dev/hyperv/vmbus/hv_channel.c (revision 302619) @@ -1,878 +1,879 @@ /*- * 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 #include 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) { struct vmbus_softc *sc = channel->vmbus_sc; 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)); if (channel->offer_msg.monitor_allocated) { hv_vmbus_monitor_page *monitor_page; 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); + hypercall_signal_event(channel->ch_sigevt_dma.hv_paddr); } } 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) { struct vmbus_softc *sc = new_channel->vmbus_sc; const struct vmbus_chanmsg_chopen_resp *resp; const struct vmbus_message *msg; struct vmbus_chanmsg_chopen *req; struct vmbus_msghc *mh; uint32_t status; int ret = 0; void *in, *out; if (user_data_len > VMBUS_CHANMSG_CHOPEN_UDATA_SIZE) { device_printf(sc->vmbus_dev, "invalid udata len %u for chan%u\n", user_data_len, new_channel->offer_msg.child_rel_id); return EINVAL; } 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(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); /* * Open channel w/ the bufring GPADL on the target CPU. */ mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for chopen(chan%u)\n", new_channel->offer_msg.child_rel_id); return ENXIO; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CHOPEN; req->chm_chanid = new_channel->offer_msg.child_rel_id; req->chm_openid = new_channel->offer_msg.child_rel_id; req->chm_gpadl = new_channel->ring_buffer_gpadl_handle; req->chm_vcpuid = new_channel->target_vcpu; req->chm_rxbr_pgofs = send_ring_buffer_size >> PAGE_SHIFT; if (user_data_len) memcpy(req->chm_udata, user_data, user_data_len); ret = vmbus_msghc_exec(sc, mh); if (ret != 0) { device_printf(sc->vmbus_dev, "chopen(chan%u) msg hypercall exec failed: %d\n", new_channel->offer_msg.child_rel_id, ret); vmbus_msghc_put(sc, mh); return ret; } msg = vmbus_msghc_wait_result(sc, mh); resp = (const struct vmbus_chanmsg_chopen_resp *)msg->msg_data; status = resp->chm_status; vmbus_msghc_put(sc, mh); if (status == 0) { new_channel->state = HV_CHANNEL_OPENED_STATE; if (bootverbose) { device_printf(sc->vmbus_dev, "chan%u opened\n", new_channel->offer_msg.child_rel_id); } } else { device_printf(sc->vmbus_dev, "failed to open chan%u\n", new_channel->offer_msg.child_rel_id); ret = ENXIO; } return (ret); } /** * @brief Establish a GPADL for the specified buffer */ int hv_vmbus_channel_establish_gpadl(struct hv_vmbus_channel *channel, void *contig_buffer, uint32_t size, uint32_t *gpadl0) { struct vmbus_softc *sc = channel->vmbus_sc; struct vmbus_msghc *mh; struct vmbus_chanmsg_gpadl_conn *req; const struct vmbus_message *msg; size_t reqsz; uint32_t gpadl, status; int page_count, range_len, i, cnt, error; uint64_t page_id, paddr; /* * Preliminary checks. */ KASSERT((size & PAGE_MASK) == 0, ("invalid GPA size %u, not multiple page size", size)); page_count = size >> PAGE_SHIFT; paddr = hv_get_phys_addr(contig_buffer); KASSERT((paddr & PAGE_MASK) == 0, ("GPA is not page aligned %jx", (uintmax_t)paddr)); page_id = paddr >> PAGE_SHIFT; range_len = __offsetof(struct vmbus_gpa_range, gpa_page[page_count]); /* * We don't support multiple GPA ranges. */ if (range_len > UINT16_MAX) { device_printf(sc->vmbus_dev, "GPA too large, %d pages\n", page_count); return EOPNOTSUPP; } /* * Allocate GPADL id. */ gpadl = atomic_fetchadd_int( &hv_vmbus_g_connection.next_gpadl_handle, 1); *gpadl0 = gpadl; /* * Connect this GPADL to the target channel. * * NOTE: * Since each message can only hold small set of page * addresses, several messages may be required to * complete the connection. */ if (page_count > VMBUS_CHANMSG_GPADL_CONN_PGMAX) cnt = VMBUS_CHANMSG_GPADL_CONN_PGMAX; else cnt = page_count; page_count -= cnt; reqsz = __offsetof(struct vmbus_chanmsg_gpadl_conn, chm_range.gpa_page[cnt]); mh = vmbus_msghc_get(sc, reqsz); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for gpadl->chan%u\n", channel->offer_msg.child_rel_id); return EIO; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_GPADL_CONN; req->chm_chanid = channel->offer_msg.child_rel_id; req->chm_gpadl = gpadl; req->chm_range_len = range_len; req->chm_range_cnt = 1; req->chm_range.gpa_len = size; req->chm_range.gpa_ofs = 0; for (i = 0; i < cnt; ++i) req->chm_range.gpa_page[i] = page_id++; error = vmbus_msghc_exec(sc, mh); if (error) { device_printf(sc->vmbus_dev, "gpadl->chan%u msg hypercall exec failed: %d\n", channel->offer_msg.child_rel_id, error); vmbus_msghc_put(sc, mh); return error; } while (page_count > 0) { struct vmbus_chanmsg_gpadl_subconn *subreq; if (page_count > VMBUS_CHANMSG_GPADL_SUBCONN_PGMAX) cnt = VMBUS_CHANMSG_GPADL_SUBCONN_PGMAX; else cnt = page_count; page_count -= cnt; reqsz = __offsetof(struct vmbus_chanmsg_gpadl_subconn, chm_gpa_page[cnt]); vmbus_msghc_reset(mh, reqsz); subreq = vmbus_msghc_dataptr(mh); subreq->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_GPADL_SUBCONN; subreq->chm_gpadl = gpadl; for (i = 0; i < cnt; ++i) subreq->chm_gpa_page[i] = page_id++; vmbus_msghc_exec_noresult(mh); } KASSERT(page_count == 0, ("invalid page count %d", page_count)); msg = vmbus_msghc_wait_result(sc, mh); status = ((const struct vmbus_chanmsg_gpadl_connresp *) msg->msg_data)->chm_status; vmbus_msghc_put(sc, mh); if (status != 0) { device_printf(sc->vmbus_dev, "gpadl->chan%u failed: " "status %u\n", channel->offer_msg.child_rel_id, status); return EIO; } return 0; } /* * Disconnect the GPA from the target channel */ int hv_vmbus_channel_teardown_gpdal(struct hv_vmbus_channel *chan, uint32_t gpadl) { struct vmbus_softc *sc = chan->vmbus_sc; struct vmbus_msghc *mh; struct vmbus_chanmsg_gpadl_disconn *req; int error; mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for gpa x->chan%u\n", chan->offer_msg.child_rel_id); return EBUSY; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_GPADL_DISCONN; req->chm_chanid = chan->offer_msg.child_rel_id; req->chm_gpadl = gpadl; error = vmbus_msghc_exec(sc, mh); if (error) { device_printf(sc->vmbus_dev, "gpa x->chan%u msg hypercall exec failed: %d\n", chan->offer_msg.child_rel_id, error); vmbus_msghc_put(sc, mh); return error; } vmbus_msghc_wait_result(sc, mh); /* Discard result; no useful information */ vmbus_msghc_put(sc, mh); return 0; } static void hv_vmbus_channel_close_internal(hv_vmbus_channel *channel) { struct vmbus_softc *sc = channel->vmbus_sc; struct vmbus_msghc *mh; struct vmbus_chanmsg_chclose *req; struct taskqueue *rxq = channel->rxq; int error; 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 */ mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for chclose(chan%u)\n", channel->offer_msg.child_rel_id); return; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CHCLOSE; req->chm_chanid = channel->offer_msg.child_rel_id; error = vmbus_msghc_exec_noresult(mh); vmbus_msghc_put(sc, mh); if (error) { device_printf(sc->vmbus_dev, "chclose(chan%u) msg hypercall exec failed: %d\n", channel->offer_msg.child_rel_id, error); return; } else if (bootverbose) { device_printf(sc->vmbus_dev, "close chan%u\n", channel->offer_msg.child_rel_id); } /* 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); } /** * @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; 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 302618) +++ head/sys/dev/hyperv/vmbus/hv_channel_mgmt.c (revision 302619) @@ -1,545 +1,546 @@ /*- * 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 typedef void (*vmbus_chanmsg_proc_t) (struct vmbus_softc *, const struct vmbus_message *); 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_chan_detach_task(void *, int); static void vmbus_channel_on_offer(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_offers_delivered(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_msghc_wakeup, [HV_CHANNEL_MESSAGE_GPADL_CREATED] = vmbus_msghc_wakeup, [HV_CHANNEL_MESSAGE_GPADL_TORNDOWN] = vmbus_msghc_wakeup, [HV_CHANNEL_MESSAGE_VERSION_RESPONSE] = vmbus_msghc_wakeup }; /** * @brief Allocate and initialize a vmbus channel object */ static struct hv_vmbus_channel * hv_vmbus_allocate_channel(struct vmbus_softc *sc) { struct hv_vmbus_channel *channel; 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); TASK_INIT(&channel->ch_detach_task, 0, vmbus_chan_detach_task, channel); 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; 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. */ hv_vmbus_child_device_register(new_channel->vmbus_sc, new_channel->device); } 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(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; /* New channel is offered by vmbus */ vmbus_scan_newchan(sc); offer = (const hv_vmbus_channel_offer_channel *)msg->msg_data; vmbus_channel_on_offer_internal(sc, offer); } static void 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(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->ch_sigevt = hyperv_dmamem_alloc( + bus_get_dma_tag(sc->vmbus_dev), + HYPERCALL_SIGEVTIN_ALIGN, 0, sizeof(struct hypercall_sigevt_in), + &new_channel->ch_sigevt_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); + if (new_channel->ch_sigevt == NULL) { + device_printf(sc->vmbus_dev, "sigevt alloc failed\n"); + /* XXX */ + mtx_destroy(&new_channel->sc_lock); + free(new_channel, M_DEVBUF); + return; + } + new_channel->ch_sigevt->hc_connid = VMBUS_CONNID_EVENT; - 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; + new_channel->ch_sigevt->hc_connid = 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. * * XXX pretty broken; need rework. */ static void vmbus_channel_on_offer_rescind(struct vmbus_softc *sc, const struct vmbus_message *msg) { const hv_vmbus_channel_rescind_offer *rescind; hv_vmbus_channel* channel; rescind = (const hv_vmbus_channel_rescind_offer *)msg->msg_data; channel = hv_vmbus_g_connection.channels[rescind->child_rel_id]; if (channel == NULL) return; hv_vmbus_g_connection.channels[rescind->child_rel_id] = NULL; taskqueue_enqueue(taskqueue_thread, &channel->ch_detach_task); } static void vmbus_chan_detach_task(void *xchan, int pending __unused) { struct hv_vmbus_channel *chan = xchan; if (HV_VMBUS_CHAN_ISPRIMARY(chan)) { /* Only primary channel owns the hv_device */ hv_vmbus_child_device_unregister(chan->device); } } /** * * @brief Invoked when all offers have been delivered. */ static void vmbus_channel_on_offers_delivered(struct vmbus_softc *sc, const struct vmbus_message *msg __unused) { /* No more new channels for the channel request. */ vmbus_scan_done(sc); } /** * @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(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); } 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 302618) +++ head/sys/dev/hyperv/vmbus/hv_connection.c (revision 302619) @@ -1,197 +1,187 @@ /*- * 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_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) { 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 an event notification to the parent - */ -int -hv_vmbus_set_event(hv_vmbus_channel *channel) -{ - - return hv_vmbus_signal_event(channel->signal_event_param); -} - 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(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 302618) +++ head/sys/dev/hyperv/vmbus/hv_vmbus_priv.h (revision 302619) @@ -1,368 +1,367 @@ /*- * 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; /* * 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; /** * 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; /* * 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); void hv_vmbus_free_vmbus_channel(hv_vmbus_channel *channel); void hv_vmbus_release_unattached_channels(void); 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); struct vmbus_softc; void hv_vmbus_child_device_register(struct vmbus_softc *, struct hv_device *child_dev); int hv_vmbus_child_device_unregister( struct hv_device *child_dev); /** * Connection interfaces */ int hv_vmbus_connect(struct vmbus_softc *); int hv_vmbus_disconnect(void); -int hv_vmbus_set_event(hv_vmbus_channel *channel); #endif /* __HYPERV_PRIV_H__ */ Index: head/sys/dev/hyperv/vmbus/hyperv.c =================================================================== --- head/sys/dev/hyperv/vmbus/hyperv.c (revision 302618) +++ head/sys/dev/hyperv/vmbus/hyperv.c (revision 302619) @@ -1,344 +1,351 @@ /*- * 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. */ /** * Implements low-level interactions with Hypver-V/Azure */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define HYPERV_FREEBSD_BUILD 0ULL #define HYPERV_FREEBSD_VERSION ((uint64_t)__FreeBSD_version) #define HYPERV_FREEBSD_OSID 0ULL #define MSR_HV_GUESTID_BUILD_FREEBSD \ (HYPERV_FREEBSD_BUILD & MSR_HV_GUESTID_BUILD_MASK) #define MSR_HV_GUESTID_VERSION_FREEBSD \ ((HYPERV_FREEBSD_VERSION << MSR_HV_GUESTID_VERSION_SHIFT) & \ MSR_HV_GUESTID_VERSION_MASK) #define MSR_HV_GUESTID_OSID_FREEBSD \ ((HYPERV_FREEBSD_OSID << MSR_HV_GUESTID_OSID_SHIFT) & \ MSR_HV_GUESTID_OSID_MASK) #define MSR_HV_GUESTID_FREEBSD \ (MSR_HV_GUESTID_BUILD_FREEBSD | \ MSR_HV_GUESTID_VERSION_FREEBSD | \ MSR_HV_GUESTID_OSID_FREEBSD | \ MSR_HV_GUESTID_OSTYPE_FREEBSD) struct hypercall_ctx { void *hc_addr; struct hyperv_dma hc_dma; }; static u_int hyperv_get_timecount(struct timecounter *tc); u_int hyperv_features; u_int hyperv_recommends; static u_int hyperv_pm_features; static u_int hyperv_features3; static struct timecounter hyperv_timecounter = { .tc_get_timecount = hyperv_get_timecount, .tc_poll_pps = NULL, .tc_counter_mask = 0xffffffff, .tc_frequency = HYPERV_TIMER_FREQ, .tc_name = "Hyper-V", .tc_quality = 2000, .tc_flags = 0, .tc_priv = NULL }; static struct hypercall_ctx hypercall_context; static u_int hyperv_get_timecount(struct timecounter *tc __unused) { return rdmsr(MSR_HV_TIME_REF_COUNT); } /** * @brief Invoke the specified hypercall */ static uint64_t hv_vmbus_do_hypercall(uint64_t value, void *input, void *output) { uint64_t in_paddr = 0, out_paddr = 0; if (input != NULL) in_paddr = hv_get_phys_addr(input); if (output != NULL) out_paddr = hv_get_phys_addr(output); return hypercall_md(hypercall_context.hc_addr, value, in_paddr, out_paddr); } uint64_t hypercall_post_message(bus_addr_t msg_paddr) { return hypercall_md(hypercall_context.hc_addr, HYPERCALL_POST_MESSAGE, msg_paddr, 0); } +uint64_t +hypercall_signal_event(bus_addr_t sigevt_paddr) +{ + return hypercall_md(hypercall_context.hc_addr, + HYPERCALL_SIGNAL_EVENT, sigevt_paddr, 0); +} + /** * @brief Signal an event on the specified connection using the hypervisor * event IPC. (This involves a hypercall.) */ hv_vmbus_status hv_vmbus_signal_event(void *con_id) { hv_vmbus_status status; status = hv_vmbus_do_hypercall( HV_CALL_SIGNAL_EVENT, con_id, 0) & 0xFFFF; return (status); } int hyperv_guid2str(const struct hv_guid *guid, char *buf, size_t sz) { const uint8_t *d = guid->data; return snprintf(buf, sz, "%02x%02x%02x%02x-" "%02x%02x-%02x%02x-%02x%02x-" "%02x%02x%02x%02x%02x%02x", d[3], d[2], d[1], d[0], d[5], d[4], d[7], d[6], d[8], d[9], d[10], d[11], d[12], d[13], d[14], d[15]); } static bool hyperv_identify(void) { u_int regs[4]; unsigned int maxleaf; if (vm_guest != VM_GUEST_HV) return (false); do_cpuid(CPUID_LEAF_HV_MAXLEAF, regs); maxleaf = regs[0]; if (maxleaf < CPUID_LEAF_HV_LIMITS) return (false); do_cpuid(CPUID_LEAF_HV_INTERFACE, regs); if (regs[0] != CPUID_HV_IFACE_HYPERV) return (false); do_cpuid(CPUID_LEAF_HV_FEATURES, regs); if ((regs[0] & CPUID_HV_MSR_HYPERCALL) == 0) { /* * Hyper-V w/o Hypercall is impossible; someone * is faking Hyper-V. */ return (false); } hyperv_features = regs[0]; hyperv_pm_features = regs[2]; hyperv_features3 = regs[3]; do_cpuid(CPUID_LEAF_HV_IDENTITY, regs); printf("Hyper-V Version: %d.%d.%d [SP%d]\n", regs[1] >> 16, regs[1] & 0xffff, regs[0], regs[2]); printf(" Features=0x%b\n", hyperv_features, "\020" "\001VPRUNTIME" /* MSR_HV_VP_RUNTIME */ "\002TMREFCNT" /* MSR_HV_TIME_REF_COUNT */ "\003SYNIC" /* MSRs for SynIC */ "\004SYNTM" /* MSRs for SynTimer */ "\005APIC" /* MSR_HV_{EOI,ICR,TPR} */ "\006HYPERCALL" /* MSR_HV_{GUEST_OS_ID,HYPERCALL} */ "\007VPINDEX" /* MSR_HV_VP_INDEX */ "\010RESET" /* MSR_HV_RESET */ "\011STATS" /* MSR_HV_STATS_ */ "\012REFTSC" /* MSR_HV_REFERENCE_TSC */ "\013IDLE" /* MSR_HV_GUEST_IDLE */ "\014TMFREQ" /* MSR_HV_{TSC,APIC}_FREQUENCY */ "\015DEBUG"); /* MSR_HV_SYNTH_DEBUG_ */ printf(" PM Features=0x%b [C%u]\n", (hyperv_pm_features & ~CPUPM_HV_CSTATE_MASK), "\020" "\005C3HPET", /* HPET is required for C3 state */ CPUPM_HV_CSTATE(hyperv_pm_features)); printf(" Features3=0x%b\n", hyperv_features3, "\020" "\001MWAIT" /* MWAIT */ "\002DEBUG" /* guest debug support */ "\003PERFMON" /* performance monitor */ "\004PCPUDPE" /* physical CPU dynamic partition event */ "\005XMMHC" /* hypercall input through XMM regs */ "\006IDLE" /* guest idle support */ "\007SLEEP" /* hypervisor sleep support */ "\010NUMA" /* NUMA distance query support */ "\011TMFREQ" /* timer frequency query (TSC, LAPIC) */ "\012SYNCMC" /* inject synthetic machine checks */ "\013CRASH" /* MSRs for guest crash */ "\014DEBUGMSR" /* MSRs for guest debug */ "\015NPIEP" /* NPIEP */ "\016HVDIS"); /* disabling hypervisor */ do_cpuid(CPUID_LEAF_HV_RECOMMENDS, regs); hyperv_recommends = regs[0]; if (bootverbose) printf(" Recommends: %08x %08x\n", regs[0], regs[1]); do_cpuid(CPUID_LEAF_HV_LIMITS, regs); if (bootverbose) { printf(" Limits: Vcpu:%d Lcpu:%d Int:%d\n", regs[0], regs[1], regs[2]); } if (maxleaf >= CPUID_LEAF_HV_HWFEATURES) { do_cpuid(CPUID_LEAF_HV_HWFEATURES, regs); if (bootverbose) { printf(" HW Features: %08x, AMD: %08x\n", regs[0], regs[3]); } } return (true); } static void hyperv_init(void *dummy __unused) { if (!hyperv_identify()) { /* Not Hyper-V; reset guest id to the generic one. */ if (vm_guest == VM_GUEST_HV) vm_guest = VM_GUEST_VM; return; } /* Set guest id */ wrmsr(MSR_HV_GUEST_OS_ID, MSR_HV_GUESTID_FREEBSD); if (hyperv_features & CPUID_HV_MSR_TIME_REFCNT) { /* Register Hyper-V timecounter */ tc_init(&hyperv_timecounter); } } SYSINIT(hyperv_initialize, SI_SUB_HYPERVISOR, SI_ORDER_FIRST, hyperv_init, NULL); static void hypercall_memfree(void) { hyperv_dmamem_free(&hypercall_context.hc_dma, hypercall_context.hc_addr); hypercall_context.hc_addr = NULL; } static void hypercall_create(void *arg __unused) { uint64_t hc, hc_orig; if (vm_guest != VM_GUEST_HV) return; hypercall_context.hc_addr = hyperv_dmamem_alloc(NULL, PAGE_SIZE, 0, PAGE_SIZE, &hypercall_context.hc_dma, BUS_DMA_WAITOK); if (hypercall_context.hc_addr == NULL) { printf("hyperv: Hypercall page allocation failed\n"); /* Can't perform any Hyper-V specific actions */ vm_guest = VM_GUEST_VM; return; } /* Get the 'reserved' bits, which requires preservation. */ hc_orig = rdmsr(MSR_HV_HYPERCALL); /* * Setup the Hypercall page. * * NOTE: 'reserved' bits MUST be preserved. */ hc = ((hypercall_context.hc_dma.hv_paddr >> PAGE_SHIFT) << MSR_HV_HYPERCALL_PGSHIFT) | (hc_orig & MSR_HV_HYPERCALL_RSVD_MASK) | MSR_HV_HYPERCALL_ENABLE; wrmsr(MSR_HV_HYPERCALL, hc); /* * Confirm that Hypercall page did get setup. */ hc = rdmsr(MSR_HV_HYPERCALL); if ((hc & MSR_HV_HYPERCALL_ENABLE) == 0) { printf("hyperv: Hypercall setup failed\n"); hypercall_memfree(); /* Can't perform any Hyper-V specific actions */ vm_guest = VM_GUEST_VM; return; } if (bootverbose) printf("hyperv: Hypercall created\n"); } SYSINIT(hypercall_ctor, SI_SUB_DRIVERS, SI_ORDER_FIRST, hypercall_create, NULL); static void hypercall_destroy(void *arg __unused) { uint64_t hc; if (hypercall_context.hc_addr == NULL) return; /* Disable Hypercall */ hc = rdmsr(MSR_HV_HYPERCALL); wrmsr(MSR_HV_HYPERCALL, (hc & MSR_HV_HYPERCALL_RSVD_MASK)); hypercall_memfree(); if (bootverbose) printf("hyperv: Hypercall destroyed\n"); } SYSUNINIT(hypercall_dtor, SI_SUB_DRIVERS, SI_ORDER_FIRST, hypercall_destroy, NULL); Index: head/sys/dev/hyperv/vmbus/hyperv_reg.h =================================================================== --- head/sys/dev/hyperv/vmbus/hyperv_reg.h (revision 302618) +++ head/sys/dev/hyperv/vmbus/hyperv_reg.h (revision 302619) @@ -1,172 +1,184 @@ /*- * Copyright (c) 2016 Microsoft Corp. * 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_REG_H_ #define _HYPERV_REG_H_ #include /* * Hyper-V Synthetic MSRs */ #define MSR_HV_GUEST_OS_ID 0x40000000 #define MSR_HV_GUESTID_BUILD_MASK 0xffffULL #define MSR_HV_GUESTID_VERSION_MASK 0x0000ffffffff0000ULL #define MSR_HV_GUESTID_VERSION_SHIFT 16 #define MSR_HV_GUESTID_OSID_MASK 0x00ff000000000000ULL #define MSR_HV_GUESTID_OSID_SHIFT 48 #define MSR_HV_GUESTID_OSTYPE_MASK 0x7f00000000000000ULL #define MSR_HV_GUESTID_OSTYPE_SHIFT 56 #define MSR_HV_GUESTID_OPENSRC 0x8000000000000000ULL #define MSR_HV_GUESTID_OSTYPE_LINUX \ ((0x01ULL << MSR_HV_GUESTID_OSTYPE_SHIFT) | MSR_HV_GUESTID_OPENSRC) #define MSR_HV_GUESTID_OSTYPE_FREEBSD \ ((0x02ULL << MSR_HV_GUESTID_OSTYPE_SHIFT) | MSR_HV_GUESTID_OPENSRC) #define MSR_HV_HYPERCALL 0x40000001 #define MSR_HV_HYPERCALL_ENABLE 0x0001ULL #define MSR_HV_HYPERCALL_RSVD_MASK 0x0ffeULL #define MSR_HV_HYPERCALL_PGSHIFT 12 #define MSR_HV_VP_INDEX 0x40000002 #define MSR_HV_TIME_REF_COUNT 0x40000020 #define MSR_HV_SCONTROL 0x40000080 #define MSR_HV_SCTRL_ENABLE 0x0001ULL #define MSR_HV_SCTRL_RSVD_MASK 0xfffffffffffffffeULL #define MSR_HV_SIEFP 0x40000082 #define MSR_HV_SIEFP_ENABLE 0x0001ULL #define MSR_HV_SIEFP_RSVD_MASK 0x0ffeULL #define MSR_HV_SIEFP_PGSHIFT 12 #define MSR_HV_SIMP 0x40000083 #define MSR_HV_SIMP_ENABLE 0x0001ULL #define MSR_HV_SIMP_RSVD_MASK 0x0ffeULL #define MSR_HV_SIMP_PGSHIFT 12 #define MSR_HV_EOM 0x40000084 #define MSR_HV_SINT0 0x40000090 #define MSR_HV_SINT_VECTOR_MASK 0x00ffULL #define MSR_HV_SINT_RSVD1_MASK 0xff00ULL #define MSR_HV_SINT_MASKED 0x00010000ULL #define MSR_HV_SINT_AUTOEOI 0x00020000ULL #define MSR_HV_SINT_RSVD2_MASK 0xfffffffffffc0000ULL #define MSR_HV_SINT_RSVD_MASK (MSR_HV_SINT_RSVD1_MASK | \ MSR_HV_SINT_RSVD2_MASK) #define MSR_HV_STIMER0_CONFIG 0x400000b0 #define MSR_HV_STIMER_CFG_ENABLE 0x0001ULL #define MSR_HV_STIMER_CFG_PERIODIC 0x0002ULL #define MSR_HV_STIMER_CFG_LAZY 0x0004ULL #define MSR_HV_STIMER_CFG_AUTOEN 0x0008ULL #define MSR_HV_STIMER_CFG_SINT_MASK 0x000f0000ULL #define MSR_HV_STIMER_CFG_SINT_SHIFT 16 #define MSR_HV_STIMER0_COUNT 0x400000b1 /* * CPUID leaves */ #define CPUID_LEAF_HV_MAXLEAF 0x40000000 #define CPUID_LEAF_HV_INTERFACE 0x40000001 #define CPUID_HV_IFACE_HYPERV 0x31237648 /* HV#1 */ #define CPUID_LEAF_HV_IDENTITY 0x40000002 #define CPUID_LEAF_HV_FEATURES 0x40000003 /* EAX: features */ #define CPUID_HV_MSR_TIME_REFCNT 0x0002 /* MSR_HV_TIME_REF_COUNT */ #define CPUID_HV_MSR_SYNIC 0x0004 /* MSRs for SynIC */ #define CPUID_HV_MSR_SYNTIMER 0x0008 /* MSRs for SynTimer */ #define CPUID_HV_MSR_APIC 0x0010 /* MSR_HV_{EOI,ICR,TPR} */ #define CPUID_HV_MSR_HYPERCALL 0x0020 /* MSR_HV_GUEST_OS_ID * MSR_HV_HYPERCALL */ #define CPUID_HV_MSR_VP_INDEX 0x0040 /* MSR_HV_VP_INDEX */ #define CPUID_HV_MSR_GUEST_IDLE 0x0400 /* MSR_HV_GUEST_IDLE */ /* ECX: power management features */ #define CPUPM_HV_CSTATE_MASK 0x000f /* deepest C-state */ #define CPUPM_HV_C3_HPET 0x0010 /* C3 requires HPET */ #define CPUPM_HV_CSTATE(f) ((f) & CPUPM_HV_CSTATE_MASK) /* EDX: features3 */ #define CPUID3_HV_MWAIT 0x0001 /* MWAIT */ #define CPUID3_HV_XMM_HYPERCALL 0x0010 /* Hypercall input through * XMM regs */ #define CPUID3_HV_GUEST_IDLE 0x0020 /* guest idle */ #define CPUID3_HV_NUMA 0x0080 /* NUMA distance query */ #define CPUID3_HV_TIME_FREQ 0x0100 /* timer frequency query * (TSC, LAPIC) */ #define CPUID3_HV_MSR_CRASH 0x0400 /* MSRs for guest crash */ #define CPUID_LEAF_HV_RECOMMENDS 0x40000004 #define CPUID_LEAF_HV_LIMITS 0x40000005 #define CPUID_LEAF_HV_HWFEATURES 0x40000006 /* * Hyper-V message types */ #define HYPERV_MSGTYPE_NONE 0 #define HYPERV_MSGTYPE_CHANNEL 1 #define HYPERV_MSGTYPE_TIMER_EXPIRED 0x80000010 /* * Hypercall status codes */ #define HYPERCALL_STATUS_SUCCESS 0x0000 /* * Hypercall input values */ #define HYPERCALL_POST_MESSAGE 0x005c +#define HYPERCALL_SIGNAL_EVENT 0x005d /* * Hypercall input parameters */ /* * HYPERCALL_POST_MESSAGE */ #define HYPERCALL_POSTMSGIN_DSIZE_MAX 240 #define HYPERCALL_POSTMSGIN_SIZE 256 #define HYPERCALL_POSTMSGIN_ALIGN 8 struct hypercall_postmsg_in { uint32_t hc_connid; uint32_t hc_rsvd; uint32_t hc_msgtype; /* HYPERV_MSGTYPE_ */ uint32_t hc_dsize; uint8_t hc_data[HYPERCALL_POSTMSGIN_DSIZE_MAX]; } __packed; CTASSERT(sizeof(struct hypercall_postmsg_in) == HYPERCALL_POSTMSGIN_SIZE); + +/* + * HYPERCALL_SIGNAL_EVENT + */ +#define HYPERCALL_SIGEVTIN_ALIGN 8 + +struct hypercall_sigevt_in { + uint32_t hc_connid; + uint16_t hc_evtflag_ofs; + uint16_t hc_rsvd; +} __packed; #endif /* !_HYPERV_REG_H_ */ Index: head/sys/dev/hyperv/vmbus/hyperv_var.h =================================================================== --- head/sys/dev/hyperv/vmbus/hyperv_var.h (revision 302618) +++ head/sys/dev/hyperv/vmbus/hyperv_var.h (revision 302619) @@ -1,43 +1,44 @@ /*- * Copyright (c) 2016 Microsoft Corp. * 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_VAR_H_ #define _HYPERV_VAR_H_ #ifndef NANOSEC #define NANOSEC 1000000000ULL #endif #define HYPERV_TIMER_NS_FACTOR 100ULL #define HYPERV_TIMER_FREQ (NANOSEC / HYPERV_TIMER_NS_FACTOR) extern u_int hyperv_features; extern u_int hyperv_recommends; uint64_t hypercall_post_message(bus_addr_t msg_paddr); +uint64_t hypercall_signal_event(bus_addr_t sigevt_paddr); #endif /* !_HYPERV_VAR_H_ */ Index: head/sys/dev/hyperv/vmbus/vmbus.c =================================================================== --- head/sys/dev/hyperv/vmbus/vmbus.c (revision 302618) +++ head/sys/dev/hyperv/vmbus/vmbus.c (revision 302619) @@ -1,1314 +1,1308 @@ /*- * 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. */ /* * VM Bus Driver Implementation */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "acpi_if.h" -/* - * NOTE: DO NOT CHANGE THESE - */ -#define VMBUS_CONNID_MESSAGE 1 -#define VMBUS_CONNID_EVENT 2 - struct vmbus_msghc { struct hypercall_postmsg_in *mh_inprm; struct hypercall_postmsg_in mh_inprm_save; struct hyperv_dma mh_inprm_dma; struct vmbus_message *mh_resp; struct vmbus_message mh_resp0; }; struct vmbus_msghc_ctx { struct vmbus_msghc *mhc_free; struct mtx mhc_free_lock; uint32_t mhc_flags; struct vmbus_msghc *mhc_active; struct mtx mhc_active_lock; }; #define VMBUS_MSGHC_CTXF_DESTROY 0x0001 static int vmbus_init(struct vmbus_softc *); static int vmbus_init_contact(struct vmbus_softc *, uint32_t); static int vmbus_req_channels(struct vmbus_softc *sc); static void vmbus_uninit(struct vmbus_softc *); static int vmbus_scan(struct vmbus_softc *); static void vmbus_scan_wait(struct vmbus_softc *); static void vmbus_scan_newdev(struct vmbus_softc *); static int vmbus_sysctl_version(SYSCTL_HANDLER_ARGS); static struct vmbus_msghc_ctx *vmbus_msghc_ctx_create(bus_dma_tag_t); static void vmbus_msghc_ctx_destroy( struct vmbus_msghc_ctx *); static void vmbus_msghc_ctx_free(struct vmbus_msghc_ctx *); static struct vmbus_msghc *vmbus_msghc_alloc(bus_dma_tag_t); static void vmbus_msghc_free(struct vmbus_msghc *); static struct vmbus_msghc *vmbus_msghc_get1(struct vmbus_msghc_ctx *, uint32_t); struct vmbus_softc *vmbus_sc; extern inthand_t IDTVEC(vmbus_isr); static const uint32_t vmbus_version[] = { HV_VMBUS_VERSION_WIN8_1, HV_VMBUS_VERSION_WIN8, HV_VMBUS_VERSION_WIN7, HV_VMBUS_VERSION_WS2008 }; static struct vmbus_msghc * vmbus_msghc_alloc(bus_dma_tag_t parent_dtag) { struct vmbus_msghc *mh; mh = malloc(sizeof(*mh), M_DEVBUF, M_WAITOK | M_ZERO); mh->mh_inprm = hyperv_dmamem_alloc(parent_dtag, HYPERCALL_POSTMSGIN_ALIGN, 0, HYPERCALL_POSTMSGIN_SIZE, &mh->mh_inprm_dma, BUS_DMA_WAITOK); if (mh->mh_inprm == NULL) { free(mh, M_DEVBUF); return NULL; } return mh; } static void vmbus_msghc_free(struct vmbus_msghc *mh) { hyperv_dmamem_free(&mh->mh_inprm_dma, mh->mh_inprm); free(mh, M_DEVBUF); } static void vmbus_msghc_ctx_free(struct vmbus_msghc_ctx *mhc) { KASSERT(mhc->mhc_active == NULL, ("still have active msg hypercall")); KASSERT(mhc->mhc_free == NULL, ("still have hypercall msg")); mtx_destroy(&mhc->mhc_free_lock); mtx_destroy(&mhc->mhc_active_lock); free(mhc, M_DEVBUF); } static struct vmbus_msghc_ctx * vmbus_msghc_ctx_create(bus_dma_tag_t parent_dtag) { struct vmbus_msghc_ctx *mhc; mhc = malloc(sizeof(*mhc), M_DEVBUF, M_WAITOK | M_ZERO); mtx_init(&mhc->mhc_free_lock, "vmbus msghc free", NULL, MTX_DEF); mtx_init(&mhc->mhc_active_lock, "vmbus msghc act", NULL, MTX_DEF); mhc->mhc_free = vmbus_msghc_alloc(parent_dtag); if (mhc->mhc_free == NULL) { vmbus_msghc_ctx_free(mhc); return NULL; } return mhc; } static struct vmbus_msghc * vmbus_msghc_get1(struct vmbus_msghc_ctx *mhc, uint32_t dtor_flag) { struct vmbus_msghc *mh; mtx_lock(&mhc->mhc_free_lock); while ((mhc->mhc_flags & dtor_flag) == 0 && mhc->mhc_free == NULL) { mtx_sleep(&mhc->mhc_free, &mhc->mhc_free_lock, 0, "gmsghc", 0); } if (mhc->mhc_flags & dtor_flag) { /* Being destroyed */ mh = NULL; } else { mh = mhc->mhc_free; KASSERT(mh != NULL, ("no free hypercall msg")); KASSERT(mh->mh_resp == NULL, ("hypercall msg has pending response")); mhc->mhc_free = NULL; } mtx_unlock(&mhc->mhc_free_lock); return mh; } void vmbus_msghc_reset(struct vmbus_msghc *mh, size_t dsize) { struct hypercall_postmsg_in *inprm; if (dsize > HYPERCALL_POSTMSGIN_DSIZE_MAX) panic("invalid data size %zu", dsize); inprm = mh->mh_inprm; memset(inprm, 0, HYPERCALL_POSTMSGIN_SIZE); inprm->hc_connid = VMBUS_CONNID_MESSAGE; inprm->hc_msgtype = HYPERV_MSGTYPE_CHANNEL; inprm->hc_dsize = dsize; } struct vmbus_msghc * vmbus_msghc_get(struct vmbus_softc *sc, size_t dsize) { struct vmbus_msghc *mh; if (dsize > HYPERCALL_POSTMSGIN_DSIZE_MAX) panic("invalid data size %zu", dsize); mh = vmbus_msghc_get1(sc->vmbus_msg_hc, VMBUS_MSGHC_CTXF_DESTROY); if (mh == NULL) return NULL; vmbus_msghc_reset(mh, dsize); return mh; } void vmbus_msghc_put(struct vmbus_softc *sc, struct vmbus_msghc *mh) { struct vmbus_msghc_ctx *mhc = sc->vmbus_msg_hc; KASSERT(mhc->mhc_active == NULL, ("msg hypercall is active")); mh->mh_resp = NULL; mtx_lock(&mhc->mhc_free_lock); KASSERT(mhc->mhc_free == NULL, ("has free hypercall msg")); mhc->mhc_free = mh; mtx_unlock(&mhc->mhc_free_lock); wakeup(&mhc->mhc_free); } void * vmbus_msghc_dataptr(struct vmbus_msghc *mh) { return mh->mh_inprm->hc_data; } static void vmbus_msghc_ctx_destroy(struct vmbus_msghc_ctx *mhc) { struct vmbus_msghc *mh; mtx_lock(&mhc->mhc_free_lock); mhc->mhc_flags |= VMBUS_MSGHC_CTXF_DESTROY; mtx_unlock(&mhc->mhc_free_lock); wakeup(&mhc->mhc_free); mh = vmbus_msghc_get1(mhc, 0); if (mh == NULL) panic("can't get msghc"); vmbus_msghc_free(mh); vmbus_msghc_ctx_free(mhc); } int vmbus_msghc_exec_noresult(struct vmbus_msghc *mh) { sbintime_t time = SBT_1MS; int i; /* * Save the input parameter so that we could restore the input * parameter if the Hypercall failed. * * XXX * Is this really necessary?! i.e. Will the Hypercall ever * overwrite the input parameter? */ memcpy(&mh->mh_inprm_save, mh->mh_inprm, HYPERCALL_POSTMSGIN_SIZE); /* * In order to cope with transient failures, e.g. insufficient * resources on host side, we retry the post message Hypercall * several times. 20 retries seem sufficient. */ #define HC_RETRY_MAX 20 for (i = 0; i < HC_RETRY_MAX; ++i) { uint64_t status; status = hypercall_post_message(mh->mh_inprm_dma.hv_paddr); if (status == HYPERCALL_STATUS_SUCCESS) return 0; pause_sbt("hcpmsg", time, 0, C_HARDCLOCK); if (time < SBT_1S * 2) time *= 2; /* Restore input parameter and try again */ memcpy(mh->mh_inprm, &mh->mh_inprm_save, HYPERCALL_POSTMSGIN_SIZE); } #undef HC_RETRY_MAX return EIO; } int vmbus_msghc_exec(struct vmbus_softc *sc, struct vmbus_msghc *mh) { struct vmbus_msghc_ctx *mhc = sc->vmbus_msg_hc; int error; KASSERT(mh->mh_resp == NULL, ("hypercall msg has pending response")); mtx_lock(&mhc->mhc_active_lock); KASSERT(mhc->mhc_active == NULL, ("pending active msg hypercall")); mhc->mhc_active = mh; mtx_unlock(&mhc->mhc_active_lock); error = vmbus_msghc_exec_noresult(mh); if (error) { mtx_lock(&mhc->mhc_active_lock); KASSERT(mhc->mhc_active == mh, ("msghc mismatch")); mhc->mhc_active = NULL; mtx_unlock(&mhc->mhc_active_lock); } return error; } const struct vmbus_message * vmbus_msghc_wait_result(struct vmbus_softc *sc, struct vmbus_msghc *mh) { struct vmbus_msghc_ctx *mhc = sc->vmbus_msg_hc; mtx_lock(&mhc->mhc_active_lock); KASSERT(mhc->mhc_active == mh, ("msghc mismatch")); while (mh->mh_resp == NULL) { mtx_sleep(&mhc->mhc_active, &mhc->mhc_active_lock, 0, "wmsghc", 0); } mhc->mhc_active = NULL; mtx_unlock(&mhc->mhc_active_lock); return mh->mh_resp; } void vmbus_msghc_wakeup(struct vmbus_softc *sc, const struct vmbus_message *msg) { struct vmbus_msghc_ctx *mhc = sc->vmbus_msg_hc; struct vmbus_msghc *mh; mtx_lock(&mhc->mhc_active_lock); mh = mhc->mhc_active; KASSERT(mh != NULL, ("no pending msg hypercall")); memcpy(&mh->mh_resp0, msg, sizeof(mh->mh_resp0)); mh->mh_resp = &mh->mh_resp0; mtx_unlock(&mhc->mhc_active_lock); wakeup(&mhc->mhc_active); } static int vmbus_init_contact(struct vmbus_softc *sc, uint32_t version) { struct vmbus_chanmsg_init_contact *req; const struct vmbus_chanmsg_version_resp *resp; const struct vmbus_message *msg; struct vmbus_msghc *mh; int error, supp = 0; mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) return ENXIO; req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_INIT_CONTACT; req->chm_ver = version; req->chm_evtflags = sc->vmbus_evtflags_dma.hv_paddr; req->chm_mnf1 = sc->vmbus_mnf1_dma.hv_paddr; req->chm_mnf2 = sc->vmbus_mnf2_dma.hv_paddr; error = vmbus_msghc_exec(sc, mh); if (error) { vmbus_msghc_put(sc, mh); return error; } msg = vmbus_msghc_wait_result(sc, mh); resp = (const struct vmbus_chanmsg_version_resp *)msg->msg_data; supp = resp->chm_supp; vmbus_msghc_put(sc, mh); return (supp ? 0 : EOPNOTSUPP); } static int vmbus_init(struct vmbus_softc *sc) { int i; for (i = 0; i < nitems(vmbus_version); ++i) { int error; error = vmbus_init_contact(sc, vmbus_version[i]); if (!error) { hv_vmbus_protocal_version = vmbus_version[i]; device_printf(sc->vmbus_dev, "version %u.%u\n", (hv_vmbus_protocal_version >> 16), (hv_vmbus_protocal_version & 0xffff)); return 0; } } return ENXIO; } static void vmbus_uninit(struct vmbus_softc *sc) { struct vmbus_chanmsg_unload *req; struct vmbus_msghc *mh; int error; mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) { device_printf(sc->vmbus_dev, "can not get msg hypercall for unload\n"); return; } req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_UNLOAD; error = vmbus_msghc_exec_noresult(mh); vmbus_msghc_put(sc, mh); if (error) { device_printf(sc->vmbus_dev, "unload msg hypercall failed\n"); } } static int vmbus_req_channels(struct vmbus_softc *sc) { struct vmbus_chanmsg_channel_req *req; struct vmbus_msghc *mh; int error; mh = vmbus_msghc_get(sc, sizeof(*req)); if (mh == NULL) return ENXIO; req = vmbus_msghc_dataptr(mh); req->chm_hdr.chm_type = VMBUS_CHANMSG_TYPE_CHANNEL_REQ; error = vmbus_msghc_exec_noresult(mh); vmbus_msghc_put(sc, mh); return error; } void vmbus_scan_newchan(struct vmbus_softc *sc) { mtx_lock(&sc->vmbus_scan_lock); if ((sc->vmbus_scan_chcnt & VMBUS_SCAN_CHCNT_DONE) == 0) sc->vmbus_scan_chcnt++; mtx_unlock(&sc->vmbus_scan_lock); } void vmbus_scan_done(struct vmbus_softc *sc) { mtx_lock(&sc->vmbus_scan_lock); sc->vmbus_scan_chcnt |= VMBUS_SCAN_CHCNT_DONE; mtx_unlock(&sc->vmbus_scan_lock); wakeup(&sc->vmbus_scan_chcnt); } static void vmbus_scan_newdev(struct vmbus_softc *sc) { mtx_lock(&sc->vmbus_scan_lock); sc->vmbus_scan_devcnt++; mtx_unlock(&sc->vmbus_scan_lock); wakeup(&sc->vmbus_scan_devcnt); } static void vmbus_scan_wait(struct vmbus_softc *sc) { uint32_t chancnt; mtx_lock(&sc->vmbus_scan_lock); while ((sc->vmbus_scan_chcnt & VMBUS_SCAN_CHCNT_DONE) == 0) { mtx_sleep(&sc->vmbus_scan_chcnt, &sc->vmbus_scan_lock, 0, "waitch", 0); } chancnt = sc->vmbus_scan_chcnt & ~VMBUS_SCAN_CHCNT_DONE; while (sc->vmbus_scan_devcnt != chancnt) { mtx_sleep(&sc->vmbus_scan_devcnt, &sc->vmbus_scan_lock, 0, "waitdev", 0); } mtx_unlock(&sc->vmbus_scan_lock); } static int vmbus_scan(struct vmbus_softc *sc) { int error; /* * Start vmbus scanning. */ error = vmbus_req_channels(sc); if (error) { device_printf(sc->vmbus_dev, "channel request failed: %d\n", error); return error; } /* * Wait for all devices are added to vmbus. */ vmbus_scan_wait(sc); /* * Identify, probe and attach. */ bus_generic_probe(sc->vmbus_dev); bus_generic_attach(sc->vmbus_dev); if (bootverbose) { device_printf(sc->vmbus_dev, "device scan, probe and attach " "done\n"); } return 0; } static void vmbus_msg_task(void *xsc, int pending __unused) { struct vmbus_softc *sc = xsc; volatile struct vmbus_message *msg; msg = VMBUS_PCPU_GET(sc, message, curcpu) + VMBUS_SINT_MESSAGE; for (;;) { if (msg->msg_type == HYPERV_MSGTYPE_NONE) { /* No message */ break; } else if (msg->msg_type == HYPERV_MSGTYPE_CHANNEL) { /* Channel message */ vmbus_chan_msgproc(sc, __DEVOLATILE(const struct vmbus_message *, msg)); } msg->msg_type = HYPERV_MSGTYPE_NONE; /* * Make sure the write to msg_type (i.e. set to * HYPERV_MSGTYPE_NONE) happens before we read the * msg_flags and EOMing. Otherwise, the EOMing will * not deliver any more messages since there is no * empty slot * * NOTE: * mb() is used here, since atomic_thread_fence_seq_cst() * will become compiler fence on UP kernel. */ mb(); if (msg->msg_flags & VMBUS_MSGFLAG_PENDING) { /* * This will cause message queue rescan to possibly * deliver another msg from the hypervisor */ wrmsr(MSR_HV_EOM, 0); } } } static __inline int vmbus_handle_intr1(struct vmbus_softc *sc, struct trapframe *frame, int cpu) { volatile struct vmbus_message *msg; struct vmbus_message *msg_base; msg_base = VMBUS_PCPU_GET(sc, message, cpu); /* * Check event timer. * * TODO: move this to independent IDT vector. */ msg = msg_base + VMBUS_SINT_TIMER; if (msg->msg_type == HYPERV_MSGTYPE_TIMER_EXPIRED) { msg->msg_type = HYPERV_MSGTYPE_NONE; vmbus_et_intr(frame); /* * Make sure the write to msg_type (i.e. set to * HYPERV_MSGTYPE_NONE) happens before we read the * msg_flags and EOMing. Otherwise, the EOMing will * not deliver any more messages since there is no * empty slot * * NOTE: * mb() is used here, since atomic_thread_fence_seq_cst() * will become compiler fence on UP kernel. */ mb(); if (msg->msg_flags & VMBUS_MSGFLAG_PENDING) { /* * This will cause message queue rescan to possibly * deliver another msg from the hypervisor */ wrmsr(MSR_HV_EOM, 0); } } /* * Check events. Hot path for network and storage I/O data; high rate. * * NOTE: * As recommended by the Windows guest fellows, we check events before * checking messages. */ sc->vmbus_event_proc(sc, cpu); /* * Check messages. Mainly management stuffs; ultra low rate. */ msg = msg_base + VMBUS_SINT_MESSAGE; if (__predict_false(msg->msg_type != HYPERV_MSGTYPE_NONE)) { taskqueue_enqueue(VMBUS_PCPU_GET(sc, message_tq, cpu), VMBUS_PCPU_PTR(sc, message_task, cpu)); } return (FILTER_HANDLED); } void vmbus_handle_intr(struct trapframe *trap_frame) { struct vmbus_softc *sc = vmbus_get_softc(); int cpu = curcpu; /* * Disable preemption. */ critical_enter(); /* * Do a little interrupt counting. */ (*VMBUS_PCPU_GET(sc, intr_cnt, cpu))++; vmbus_handle_intr1(sc, trap_frame, cpu); /* * Enable preemption. */ critical_exit(); } static void vmbus_synic_setup(void *xsc) { struct vmbus_softc *sc = xsc; int cpu = curcpu; uint64_t val, orig; uint32_t sint; if (hyperv_features & CPUID_HV_MSR_VP_INDEX) { /* * Save virtual processor id. */ VMBUS_PCPU_GET(sc, vcpuid, cpu) = rdmsr(MSR_HV_VP_INDEX); } else { /* * XXX * Virtual processoor id is only used by a pretty broken * channel selection code from storvsc. It's nothing * critical even if CPUID_HV_MSR_VP_INDEX is not set; keep * moving on. */ VMBUS_PCPU_GET(sc, vcpuid, cpu) = cpu; } /* * Setup the SynIC message. */ orig = rdmsr(MSR_HV_SIMP); val = MSR_HV_SIMP_ENABLE | (orig & MSR_HV_SIMP_RSVD_MASK) | ((VMBUS_PCPU_GET(sc, message_dma.hv_paddr, cpu) >> PAGE_SHIFT) << MSR_HV_SIMP_PGSHIFT); wrmsr(MSR_HV_SIMP, val); /* * Setup the SynIC event flags. */ orig = rdmsr(MSR_HV_SIEFP); val = MSR_HV_SIEFP_ENABLE | (orig & MSR_HV_SIEFP_RSVD_MASK) | ((VMBUS_PCPU_GET(sc, event_flags_dma.hv_paddr, cpu) >> PAGE_SHIFT) << MSR_HV_SIEFP_PGSHIFT); wrmsr(MSR_HV_SIEFP, val); /* * Configure and unmask SINT for message and event flags. */ sint = MSR_HV_SINT0 + VMBUS_SINT_MESSAGE; orig = rdmsr(sint); val = sc->vmbus_idtvec | MSR_HV_SINT_AUTOEOI | (orig & MSR_HV_SINT_RSVD_MASK); wrmsr(sint, val); /* * Configure and unmask SINT for timer. */ sint = MSR_HV_SINT0 + VMBUS_SINT_TIMER; orig = rdmsr(sint); val = sc->vmbus_idtvec | MSR_HV_SINT_AUTOEOI | (orig & MSR_HV_SINT_RSVD_MASK); wrmsr(sint, val); /* * All done; enable SynIC. */ orig = rdmsr(MSR_HV_SCONTROL); val = MSR_HV_SCTRL_ENABLE | (orig & MSR_HV_SCTRL_RSVD_MASK); wrmsr(MSR_HV_SCONTROL, val); } static void vmbus_synic_teardown(void *arg) { uint64_t orig; uint32_t sint; /* * Disable SynIC. */ orig = rdmsr(MSR_HV_SCONTROL); wrmsr(MSR_HV_SCONTROL, (orig & MSR_HV_SCTRL_RSVD_MASK)); /* * Mask message and event flags SINT. */ sint = MSR_HV_SINT0 + VMBUS_SINT_MESSAGE; orig = rdmsr(sint); wrmsr(sint, orig | MSR_HV_SINT_MASKED); /* * Mask timer SINT. */ sint = MSR_HV_SINT0 + VMBUS_SINT_TIMER; orig = rdmsr(sint); wrmsr(sint, orig | MSR_HV_SINT_MASKED); /* * Teardown SynIC message. */ orig = rdmsr(MSR_HV_SIMP); wrmsr(MSR_HV_SIMP, (orig & MSR_HV_SIMP_RSVD_MASK)); /* * Teardown SynIC event flags. */ orig = rdmsr(MSR_HV_SIEFP); wrmsr(MSR_HV_SIEFP, (orig & MSR_HV_SIEFP_RSVD_MASK)); } static int vmbus_dma_alloc(struct vmbus_softc *sc) { bus_dma_tag_t parent_dtag; uint8_t *evtflags; int cpu; parent_dtag = bus_get_dma_tag(sc->vmbus_dev); CPU_FOREACH(cpu) { void *ptr; /* * Per-cpu messages and event flags. */ ptr = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, PAGE_SIZE, VMBUS_PCPU_PTR(sc, message_dma, cpu), BUS_DMA_WAITOK | BUS_DMA_ZERO); if (ptr == NULL) return ENOMEM; VMBUS_PCPU_GET(sc, message, cpu) = ptr; ptr = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, PAGE_SIZE, VMBUS_PCPU_PTR(sc, event_flags_dma, cpu), BUS_DMA_WAITOK | BUS_DMA_ZERO); if (ptr == NULL) return ENOMEM; VMBUS_PCPU_GET(sc, event_flags, cpu) = ptr; } evtflags = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, PAGE_SIZE, &sc->vmbus_evtflags_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); if (evtflags == NULL) return ENOMEM; sc->vmbus_rx_evtflags = (u_long *)evtflags; sc->vmbus_tx_evtflags = (u_long *)(evtflags + (PAGE_SIZE / 2)); sc->vmbus_evtflags = evtflags; sc->vmbus_mnf1 = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, PAGE_SIZE, &sc->vmbus_mnf1_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); if (sc->vmbus_mnf1 == NULL) return ENOMEM; sc->vmbus_mnf2 = hyperv_dmamem_alloc(parent_dtag, PAGE_SIZE, 0, PAGE_SIZE, &sc->vmbus_mnf2_dma, BUS_DMA_WAITOK | BUS_DMA_ZERO); if (sc->vmbus_mnf2 == NULL) return ENOMEM; return 0; } static void vmbus_dma_free(struct vmbus_softc *sc) { int cpu; if (sc->vmbus_evtflags != NULL) { hyperv_dmamem_free(&sc->vmbus_evtflags_dma, sc->vmbus_evtflags); sc->vmbus_evtflags = NULL; sc->vmbus_rx_evtflags = NULL; sc->vmbus_tx_evtflags = NULL; } if (sc->vmbus_mnf1 != NULL) { hyperv_dmamem_free(&sc->vmbus_mnf1_dma, sc->vmbus_mnf1); sc->vmbus_mnf1 = NULL; } if (sc->vmbus_mnf2 != NULL) { hyperv_dmamem_free(&sc->vmbus_mnf2_dma, sc->vmbus_mnf2); sc->vmbus_mnf2 = NULL; } CPU_FOREACH(cpu) { if (VMBUS_PCPU_GET(sc, message, cpu) != NULL) { hyperv_dmamem_free( VMBUS_PCPU_PTR(sc, message_dma, cpu), VMBUS_PCPU_GET(sc, message, cpu)); VMBUS_PCPU_GET(sc, message, cpu) = NULL; } if (VMBUS_PCPU_GET(sc, event_flags, cpu) != NULL) { hyperv_dmamem_free( VMBUS_PCPU_PTR(sc, event_flags_dma, cpu), VMBUS_PCPU_GET(sc, event_flags, cpu)); VMBUS_PCPU_GET(sc, event_flags, cpu) = NULL; } } } static int vmbus_intr_setup(struct vmbus_softc *sc) { int cpu; CPU_FOREACH(cpu) { char buf[MAXCOMLEN + 1]; cpuset_t cpu_mask; /* Allocate an interrupt counter for Hyper-V interrupt */ snprintf(buf, sizeof(buf), "cpu%d:hyperv", cpu); intrcnt_add(buf, VMBUS_PCPU_PTR(sc, intr_cnt, cpu)); /* * Setup taskqueue to handle events. Task will be per- * channel. */ VMBUS_PCPU_GET(sc, event_tq, cpu) = taskqueue_create_fast( "hyperv event", M_WAITOK, taskqueue_thread_enqueue, VMBUS_PCPU_PTR(sc, event_tq, cpu)); CPU_SETOF(cpu, &cpu_mask); taskqueue_start_threads_cpuset( VMBUS_PCPU_PTR(sc, event_tq, cpu), 1, PI_NET, &cpu_mask, "hvevent%d", cpu); /* * Setup tasks and taskqueues to handle messages. */ VMBUS_PCPU_GET(sc, message_tq, cpu) = taskqueue_create_fast( "hyperv msg", M_WAITOK, taskqueue_thread_enqueue, VMBUS_PCPU_PTR(sc, message_tq, cpu)); CPU_SETOF(cpu, &cpu_mask); taskqueue_start_threads_cpuset( VMBUS_PCPU_PTR(sc, message_tq, cpu), 1, PI_NET, &cpu_mask, "hvmsg%d", cpu); TASK_INIT(VMBUS_PCPU_PTR(sc, message_task, cpu), 0, vmbus_msg_task, sc); } /* * All Hyper-V ISR required resources are setup, now let's find a * free IDT vector for Hyper-V ISR and set it up. */ sc->vmbus_idtvec = lapic_ipi_alloc(IDTVEC(vmbus_isr)); if (sc->vmbus_idtvec < 0) { device_printf(sc->vmbus_dev, "cannot find free IDT vector\n"); return ENXIO; } if(bootverbose) { device_printf(sc->vmbus_dev, "vmbus IDT vector %d\n", sc->vmbus_idtvec); } return 0; } static void vmbus_intr_teardown(struct vmbus_softc *sc) { int cpu; if (sc->vmbus_idtvec >= 0) { lapic_ipi_free(sc->vmbus_idtvec); sc->vmbus_idtvec = -1; } CPU_FOREACH(cpu) { if (VMBUS_PCPU_GET(sc, event_tq, cpu) != NULL) { taskqueue_free(VMBUS_PCPU_GET(sc, event_tq, cpu)); VMBUS_PCPU_GET(sc, event_tq, cpu) = NULL; } if (VMBUS_PCPU_GET(sc, message_tq, cpu) != NULL) { taskqueue_drain(VMBUS_PCPU_GET(sc, message_tq, cpu), VMBUS_PCPU_PTR(sc, message_task, cpu)); taskqueue_free(VMBUS_PCPU_GET(sc, message_tq, cpu)); VMBUS_PCPU_GET(sc, message_tq, cpu) = NULL; } } } static int vmbus_read_ivar(device_t dev, device_t child, int index, uintptr_t *result) { struct hv_device *child_dev_ctx = device_get_ivars(child); switch (index) { case HV_VMBUS_IVAR_TYPE: *result = (uintptr_t)&child_dev_ctx->class_id; return (0); case HV_VMBUS_IVAR_INSTANCE: *result = (uintptr_t)&child_dev_ctx->device_id; return (0); case HV_VMBUS_IVAR_DEVCTX: *result = (uintptr_t)child_dev_ctx; return (0); case HV_VMBUS_IVAR_NODE: *result = (uintptr_t)child_dev_ctx->device; return (0); } return (ENOENT); } static int vmbus_write_ivar(device_t dev, device_t child, int index, uintptr_t value) { switch (index) { case HV_VMBUS_IVAR_TYPE: case HV_VMBUS_IVAR_INSTANCE: case HV_VMBUS_IVAR_DEVCTX: case HV_VMBUS_IVAR_NODE: /* read-only */ return (EINVAL); } return (ENOENT); } static int vmbus_child_pnpinfo_str(device_t dev, device_t child, char *buf, size_t buflen) { struct hv_device *dev_ctx = device_get_ivars(child); char guidbuf[HYPERV_GUID_STRLEN]; if (dev_ctx == NULL) return (0); strlcat(buf, "classid=", buflen); hyperv_guid2str(&dev_ctx->class_id, guidbuf, sizeof(guidbuf)); strlcat(buf, guidbuf, buflen); strlcat(buf, " deviceid=", buflen); hyperv_guid2str(&dev_ctx->device_id, guidbuf, sizeof(guidbuf)); strlcat(buf, guidbuf, buflen); return (0); } struct hv_device * hv_vmbus_child_device_create(hv_guid type, hv_guid instance, hv_vmbus_channel *channel) { hv_device *child_dev; /* * Allocate the new child device */ child_dev = malloc(sizeof(hv_device), M_DEVBUF, M_WAITOK | M_ZERO); child_dev->channel = channel; memcpy(&child_dev->class_id, &type, sizeof(hv_guid)); memcpy(&child_dev->device_id, &instance, sizeof(hv_guid)); return (child_dev); } void hv_vmbus_child_device_register(struct vmbus_softc *sc, struct hv_device *child_dev) { device_t child, parent; parent = sc->vmbus_dev; if (bootverbose) { char name[HYPERV_GUID_STRLEN]; hyperv_guid2str(&child_dev->class_id, name, sizeof(name)); device_printf(parent, "add device, classid: %s\n", name); } child = device_add_child(parent, NULL, -1); child_dev->device = child; device_set_ivars(child, child_dev); /* New device was added to vmbus */ vmbus_scan_newdev(sc); } int hv_vmbus_child_device_unregister(struct hv_device *child_dev) { int ret = 0; /* * XXXKYS: Ensure that this is the opposite of * device_add_child() */ mtx_lock(&Giant); ret = device_delete_child(vmbus_get_device(), child_dev->device); mtx_unlock(&Giant); return(ret); } static int vmbus_sysctl_version(SYSCTL_HANDLER_ARGS) { char verstr[16]; snprintf(verstr, sizeof(verstr), "%u.%u", hv_vmbus_protocal_version >> 16, hv_vmbus_protocal_version & 0xffff); return sysctl_handle_string(oidp, verstr, sizeof(verstr), req); } static int vmbus_probe(device_t dev) { char *id[] = { "VMBUS", NULL }; if (ACPI_ID_PROBE(device_get_parent(dev), dev, id) == NULL || device_get_unit(dev) != 0 || vm_guest != VM_GUEST_HV || (hyperv_features & CPUID_HV_MSR_SYNIC) == 0) return (ENXIO); device_set_desc(dev, "Hyper-V Vmbus"); return (BUS_PROBE_DEFAULT); } /** * @brief Main vmbus driver initialization routine. * * Here, we * - initialize the vmbus driver context * - setup various driver entry points * - invoke the vmbus hv main init routine * - get the irq resource * - invoke the vmbus to add the vmbus root device * - setup the vmbus root device * - retrieve the channel offers */ static int vmbus_doattach(struct vmbus_softc *sc) { struct sysctl_oid_list *child; struct sysctl_ctx_list *ctx; int ret; if (sc->vmbus_flags & VMBUS_FLAG_ATTACHED) return (0); sc->vmbus_flags |= VMBUS_FLAG_ATTACHED; mtx_init(&sc->vmbus_scan_lock, "vmbus scan", NULL, MTX_DEF); /* * Create context for "post message" Hypercalls */ sc->vmbus_msg_hc = vmbus_msghc_ctx_create( bus_get_dma_tag(sc->vmbus_dev)); if (sc->vmbus_msg_hc == NULL) { ret = ENXIO; goto cleanup; } /* * Allocate DMA stuffs. */ ret = vmbus_dma_alloc(sc); if (ret != 0) goto cleanup; /* * Setup interrupt. */ ret = vmbus_intr_setup(sc); if (ret != 0) goto cleanup; /* * Setup SynIC. */ if (bootverbose) device_printf(sc->vmbus_dev, "smp_started = %d\n", smp_started); smp_rendezvous(NULL, vmbus_synic_setup, NULL, sc); sc->vmbus_flags |= VMBUS_FLAG_SYNIC; /* * Connect to VMBus in the root partition */ ret = hv_vmbus_connect(sc); if (ret != 0) goto cleanup; ret = vmbus_init(sc); if (ret != 0) goto cleanup; if (hv_vmbus_protocal_version == HV_VMBUS_VERSION_WS2008 || hv_vmbus_protocal_version == HV_VMBUS_VERSION_WIN7) sc->vmbus_event_proc = vmbus_event_proc_compat; else sc->vmbus_event_proc = vmbus_event_proc; ret = vmbus_scan(sc); if (ret != 0) goto cleanup; ctx = device_get_sysctl_ctx(sc->vmbus_dev); child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->vmbus_dev)); SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "version", CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, vmbus_sysctl_version, "A", "vmbus version"); return (ret); cleanup: vmbus_intr_teardown(sc); vmbus_dma_free(sc); if (sc->vmbus_msg_hc != NULL) { vmbus_msghc_ctx_destroy(sc->vmbus_msg_hc); sc->vmbus_msg_hc = NULL; } mtx_destroy(&sc->vmbus_scan_lock); return (ret); } static void vmbus_event_proc_dummy(struct vmbus_softc *sc __unused, int cpu __unused) { } static int vmbus_attach(device_t dev) { vmbus_sc = device_get_softc(dev); vmbus_sc->vmbus_dev = dev; vmbus_sc->vmbus_idtvec = -1; /* * Event processing logic will be configured: * - After the vmbus protocol version negotiation. * - Before we request channel offers. */ vmbus_sc->vmbus_event_proc = vmbus_event_proc_dummy; #ifndef EARLY_AP_STARTUP /* * If the system has already booted and thread * scheduling is possible indicated by the global * cold set to zero, we just call the driver * initialization directly. */ if (!cold) #endif vmbus_doattach(vmbus_sc); return (0); } static void vmbus_sysinit(void *arg __unused) { struct vmbus_softc *sc = vmbus_get_softc(); if (vm_guest != VM_GUEST_HV || sc == NULL) return; #ifndef EARLY_AP_STARTUP /* * If the system has already booted and thread * scheduling is possible, as indicated by the * global cold set to zero, we just call the driver * initialization directly. */ if (!cold) #endif vmbus_doattach(sc); } static int vmbus_detach(device_t dev) { struct vmbus_softc *sc = device_get_softc(dev); hv_vmbus_release_unattached_channels(); vmbus_uninit(sc); hv_vmbus_disconnect(); if (sc->vmbus_flags & VMBUS_FLAG_SYNIC) { sc->vmbus_flags &= ~VMBUS_FLAG_SYNIC; smp_rendezvous(NULL, vmbus_synic_teardown, NULL, NULL); } vmbus_intr_teardown(sc); vmbus_dma_free(sc); if (sc->vmbus_msg_hc != NULL) { vmbus_msghc_ctx_destroy(sc->vmbus_msg_hc); sc->vmbus_msg_hc = NULL; } mtx_destroy(&sc->vmbus_scan_lock); return (0); } static device_method_t vmbus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, vmbus_probe), DEVMETHOD(device_attach, vmbus_attach), DEVMETHOD(device_detach, vmbus_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus interface */ DEVMETHOD(bus_add_child, bus_generic_add_child), DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_read_ivar, vmbus_read_ivar), DEVMETHOD(bus_write_ivar, vmbus_write_ivar), DEVMETHOD(bus_child_pnpinfo_str, vmbus_child_pnpinfo_str), DEVMETHOD_END }; static driver_t vmbus_driver = { "vmbus", vmbus_methods, sizeof(struct vmbus_softc) }; static devclass_t vmbus_devclass; DRIVER_MODULE(vmbus, acpi, vmbus_driver, vmbus_devclass, NULL, NULL); MODULE_DEPEND(vmbus, acpi, 1, 1, 1); MODULE_VERSION(vmbus, 1); #ifndef EARLY_AP_STARTUP /* * NOTE: * We have to start as the last step of SI_SUB_SMP, i.e. after SMP is * initialized. */ SYSINIT(vmbus_initialize, SI_SUB_SMP, SI_ORDER_ANY, vmbus_sysinit, NULL); #endif Index: head/sys/dev/hyperv/vmbus/vmbus_var.h =================================================================== --- head/sys/dev/hyperv/vmbus/vmbus_var.h (revision 302618) +++ head/sys/dev/hyperv/vmbus/vmbus_var.h (revision 302619) @@ -1,141 +1,147 @@ /*- * Copyright (c) 2016 Microsoft Corp. * 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 _VMBUS_VAR_H_ #define _VMBUS_VAR_H_ #include #include #include #include /* * NOTE: DO NOT CHANGE THIS. */ #define VMBUS_SINT_MESSAGE 2 /* * NOTE: * - DO NOT set it to the same value as VMBUS_SINT_MESSAGE. * - DO NOT set it to 0. */ #define VMBUS_SINT_TIMER 4 +/* + * NOTE: DO NOT CHANGE THESE + */ +#define VMBUS_CONNID_MESSAGE 1 +#define VMBUS_CONNID_EVENT 2 + struct vmbus_pcpu_data { u_long *intr_cnt; /* Hyper-V interrupt counter */ struct vmbus_message *message; /* shared messages */ uint32_t vcpuid; /* virtual cpuid */ int event_flags_cnt;/* # of event flags */ struct vmbus_evtflags *event_flags; /* event flags from host */ /* Rarely used fields */ struct hyperv_dma message_dma; /* busdma glue */ struct hyperv_dma event_flags_dma;/* busdma glue */ struct taskqueue *event_tq; /* event taskq */ struct taskqueue *message_tq; /* message taskq */ struct task message_task; /* message task */ } __aligned(CACHE_LINE_SIZE); struct vmbus_softc { void (*vmbus_event_proc)(struct vmbus_softc *, int); u_long *vmbus_tx_evtflags; /* event flags to host */ void *vmbus_mnf2; /* monitored by host */ u_long *vmbus_rx_evtflags; /* compat evtflgs from host */ struct vmbus_msghc_ctx *vmbus_msg_hc; struct vmbus_pcpu_data vmbus_pcpu[MAXCPU]; /* Rarely used fields */ device_t vmbus_dev; int vmbus_idtvec; uint32_t vmbus_flags; /* see VMBUS_FLAG_ */ /* Shared memory for vmbus_{rx,tx}_evtflags */ void *vmbus_evtflags; struct hyperv_dma vmbus_evtflags_dma; void *vmbus_mnf1; /* monitored by VM, unused */ struct hyperv_dma vmbus_mnf1_dma; struct hyperv_dma vmbus_mnf2_dma; struct mtx vmbus_scan_lock; uint32_t vmbus_scan_chcnt; #define VMBUS_SCAN_CHCNT_DONE 0x80000000 uint32_t vmbus_scan_devcnt; }; #define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */ #define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */ extern struct vmbus_softc *vmbus_sc; static __inline struct vmbus_softc * vmbus_get_softc(void) { return vmbus_sc; } static __inline device_t vmbus_get_device(void) { return vmbus_sc->vmbus_dev; } #define VMBUS_PCPU_GET(sc, field, cpu) (sc)->vmbus_pcpu[(cpu)].field #define VMBUS_PCPU_PTR(sc, field, cpu) &(sc)->vmbus_pcpu[(cpu)].field struct hv_vmbus_channel; struct trapframe; struct vmbus_message; struct vmbus_msghc; void vmbus_on_channel_open(const struct hv_vmbus_channel *); void vmbus_event_proc(struct vmbus_softc *, int); void vmbus_event_proc_compat(struct vmbus_softc *, int); void vmbus_handle_intr(struct trapframe *); void vmbus_et_intr(struct trapframe *); void vmbus_chan_msgproc(struct vmbus_softc *, const struct vmbus_message *); struct vmbus_msghc *vmbus_msghc_get(struct vmbus_softc *, size_t); void vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *); void *vmbus_msghc_dataptr(struct vmbus_msghc *); int vmbus_msghc_exec_noresult(struct vmbus_msghc *); int vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *); const struct vmbus_message *vmbus_msghc_wait_result(struct vmbus_softc *, struct vmbus_msghc *); void vmbus_msghc_wakeup(struct vmbus_softc *, const struct vmbus_message *); void vmbus_msghc_reset(struct vmbus_msghc *, size_t); void vmbus_scan_done(struct vmbus_softc *); void vmbus_scan_newchan(struct vmbus_softc *); #endif /* !_VMBUS_VAR_H_ */