vmbus_var.h

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    1 /*-
    2  * Copyright (c) 2016 Microsoft Corp.
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice unmodified, this list of conditions, and the following
   10  *    disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   25  *
   26  * $FreeBSD$
   27  */
   28 
   29 #ifndef _VMBUS_VAR_H_
   30 #define _VMBUS_VAR_H_
   31 
   32 #include <sys/param.h>
   33 #include <sys/kernel.h>
   34 #include <sys/taskqueue.h>
   35 #include <sys/rman.h>
   36 
   37 #include <dev/hyperv/include/hyperv_busdma.h>
   38 #include <dev/pci/pcivar.h>
   39 #include <dev/pci/pcib_private.h>
   40 
   41 /*
   42  * NOTE: DO NOT CHANGE THIS.
   43  */
   44 #define VMBUS_SINT_MESSAGE      2
   45 /*
   46  * NOTE:
   47  * - DO NOT set it to the same value as VMBUS_SINT_MESSAGE.
   48  * - DO NOT set it to 0.
   49  */
   50 #define VMBUS_SINT_TIMER        4
   51 
   52 /*
   53  * NOTE: DO NOT CHANGE THESE
   54  */
   55 #define VMBUS_CONNID_MESSAGE            1
   56 #define VMBUS_CONNID_EVENT              2
   57 
   58 struct vmbus_message;
   59 struct vmbus_softc;
   60 
   61 typedef void            (*vmbus_chanmsg_proc_t)(struct vmbus_softc *,
   62                             const struct vmbus_message *);
   63 
   64 #define VMBUS_CHANMSG_PROC(name, func)  \
   65         [VMBUS_CHANMSG_TYPE_##name] = func
   66 #define VMBUS_CHANMSG_PROC_WAKEUP(name) \
   67         VMBUS_CHANMSG_PROC(name, vmbus_msghc_wakeup)
   68 
   69 struct vmbus_pcpu_data {
   70         u_long                  *intr_cnt;      /* Hyper-V interrupt counter */
   71         struct vmbus_message    *message;       /* shared messages */
   72         uint32_t                vcpuid;         /* virtual cpuid */
   73         int                     event_flags_cnt;/* # of event flags */
   74         struct vmbus_evtflags   *event_flags;   /* event flags from host */
   75 
   76         /* Rarely used fields */
   77         struct hyperv_dma       message_dma;    /* busdma glue */
   78         struct hyperv_dma       event_flags_dma;/* busdma glue */
   79         struct taskqueue        *event_tq;      /* event taskq */
   80         struct taskqueue        *message_tq;    /* message taskq */
   81         struct task             message_task;   /* message task */
   82 } __aligned(CACHE_LINE_SIZE);
   83 
   84 #if __FreeBSD_version < 1100000
   85 typedef u_long rman_res_t;
   86 #endif
   87 
   88 struct vmbus_softc {
   89         void                    (*vmbus_event_proc)(struct vmbus_softc *, int);
   90         u_long                  *vmbus_tx_evtflags;
   91                                                 /* event flags to host */
   92         struct vmbus_mnf        *vmbus_mnf2;    /* monitored by host */
   93 
   94         u_long                  *vmbus_rx_evtflags;
   95                                                 /* compat evtflgs from host */
   96         struct vmbus_channel *volatile *vmbus_chmap;
   97         struct vmbus_xact_ctx   *vmbus_xc;
   98         struct vmbus_pcpu_data  vmbus_pcpu[MAXCPU];
   99 
  100         /*
  101          * Rarely used fields
  102          */
  103 
  104         device_t                vmbus_dev;
  105         int                     vmbus_idtvec;
  106         uint32_t                vmbus_flags;    /* see VMBUS_FLAG_ */
  107         uint32_t                vmbus_version;
  108         uint32_t                vmbus_gpadl;
  109 
  110         /* Shared memory for vmbus_{rx,tx}_evtflags */
  111         void                    *vmbus_evtflags;
  112         struct hyperv_dma       vmbus_evtflags_dma;
  113 
  114         void                    *vmbus_mnf1;    /* monitored by VM, unused */
  115         struct hyperv_dma       vmbus_mnf1_dma;
  116         struct hyperv_dma       vmbus_mnf2_dma;
  117 
  118         bool                    vmbus_scandone;
  119         struct task             vmbus_scandone_task;
  120 
  121         struct taskqueue        *vmbus_devtq;   /* for dev attach/detach */
  122         struct taskqueue        *vmbus_subchtq; /* for sub-chan attach/detach */
  123 
  124         /* Primary channels */
  125         struct mtx              vmbus_prichan_lock;
  126         TAILQ_HEAD(, vmbus_channel) vmbus_prichans;
  127 
  128         /* Complete channel list */
  129         struct mtx              vmbus_chan_lock;
  130         TAILQ_HEAD(, vmbus_channel) vmbus_chans;
  131 
  132         struct intr_config_hook vmbus_intrhook;
  133 
  134 #ifdef NEW_PCIB
  135         /* The list of usable MMIO ranges for PCIe pass-through */
  136         struct pcib_host_resources vmbus_mmio_res;
  137 #endif
  138 
  139 #if defined(__aarch64__)
  140         struct resource *ires;
  141         void *icookie;
  142         int vector;
  143 #endif
  144 };
  145 
  146 #define VMBUS_FLAG_ATTACHED     0x0001  /* vmbus was attached */
  147 #define VMBUS_FLAG_SYNIC        0x0002  /* SynIC was setup */
  148 
  149 #define VMBUS_PCPU_GET(sc, field, cpu)  (sc)->vmbus_pcpu[(cpu)].field
  150 #define VMBUS_PCPU_PTR(sc, field, cpu)  &(sc)->vmbus_pcpu[(cpu)].field
  151 
  152 struct vmbus_channel;
  153 struct trapframe;
  154 struct vmbus_message;
  155 struct vmbus_msghc;
  156 
  157 void            vmbus_handle_intr(struct trapframe *);
  158 int             vmbus_add_child(struct vmbus_channel *);
  159 int             vmbus_delete_child(struct vmbus_channel *);
  160 #if !defined(__aarch64__)
  161 void            vmbus_et_intr(struct trapframe *);
  162 #endif
  163 uint32_t        vmbus_gpadl_alloc(struct vmbus_softc *);
  164 
  165 struct vmbus_msghc *
  166                 vmbus_msghc_get(struct vmbus_softc *, size_t);
  167 void            vmbus_msghc_put(struct vmbus_softc *, struct vmbus_msghc *);
  168 void            *vmbus_msghc_dataptr(struct vmbus_msghc *);
  169 int             vmbus_msghc_exec_noresult(struct vmbus_msghc *);
  170 int             vmbus_msghc_exec(struct vmbus_softc *, struct vmbus_msghc *);
  171 void            vmbus_msghc_exec_cancel(struct vmbus_softc *,
  172                     struct vmbus_msghc *);
  173 const struct vmbus_message *
  174                 vmbus_msghc_wait_result(struct vmbus_softc *,
  175                     struct vmbus_msghc *);
  176 const struct vmbus_message *
  177                 vmbus_msghc_poll_result(struct vmbus_softc *,
  178                     struct vmbus_msghc *);
  179 void            vmbus_msghc_wakeup(struct vmbus_softc *,
  180                     const struct vmbus_message *);
  181 void            vmbus_msghc_reset(struct vmbus_msghc *, size_t);
  182 
  183 void    vmbus_handle_timer_intr1(struct vmbus_message *msg_base,
  184         struct trapframe *frame);
  185 
  186 void    vmbus_synic_setup1(void *xsc);
  187 void    vmbus_synic_teardown1(void);
  188 int     vmbus_setup_intr1(struct vmbus_softc *sc);
  189 void    vmbus_intr_teardown1(struct vmbus_softc *sc);
  190 #endif  /* !_VMBUS_VAR_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/dev/hyperv/vmbus/vmbus_var.h

FreeBSD/Linux Kernel Cross Reference
sys/dev/hyperv/vmbus/vmbus_var.h