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/*-
* 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 <sys/param.h>
#include <sys/taskqueue.h>
#include <dev/hyperv/include/hyperv_busdma.h>
/*
* 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_message;
struct vmbus_softc;
typedef void (*vmbus_chanmsg_proc_t)(struct vmbus_softc *,
const struct vmbus_message *);
#define VMBUS_CHANMSG_PROC(name, func) \
[VMBUS_CHANMSG_TYPE_##name] = func
#define VMBUS_CHANMSG_PROC_WAKEUP(name) \
VMBUS_CHANMSG_PROC(name, vmbus_msghc_wakeup)
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 */
struct vmbus_mnf *vmbus_mnf2; /* monitored by host */
u_long *vmbus_rx_evtflags;
/* compat evtflgs from host */
struct vmbus_channel **vmbus_chmap;
struct vmbus_xact_ctx *vmbus_xc;
struct vmbus_pcpu_data vmbus_pcpu[MAXCPU];
/*
* Rarely used fields
*/
device_t vmbus_dev;
int vmbus_idtvec;
uint32_t vmbus_flags; /* see VMBUS_FLAG_ */
uint32_t vmbus_version;
uint32_t vmbus_gpadl;
/* 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;
bool vmbus_scandone;
struct task vmbus_scandone_task;
struct taskqueue *vmbus_devtq; /* for dev attach/detach */
struct taskqueue *vmbus_subchtq; /* for sub-chan attach/detach */
/* Primary channels */
struct mtx vmbus_prichan_lock;
TAILQ_HEAD(, vmbus_channel) vmbus_prichans;
/* Complete channel list */
struct mtx vmbus_chan_lock;
TAILQ_HEAD(, vmbus_channel) vmbus_chans;
};
#define VMBUS_FLAG_ATTACHED 0x0001 /* vmbus was attached */
#define VMBUS_FLAG_SYNIC 0x0002 /* SynIC was setup */
#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 vmbus_channel;
struct trapframe;
struct vmbus_message;
struct vmbus_msghc;
void vmbus_handle_intr(struct trapframe *);
int vmbus_add_child(struct vmbus_channel *);
int vmbus_delete_child(struct vmbus_channel *);
void vmbus_et_intr(struct trapframe *);
uint32_t vmbus_gpadl_alloc(struct vmbus_softc *);
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);
#endif /* !_VMBUS_VAR_H_ */
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