85 	struct vmbus_xact *xact;  in vmbus_xact_alloc()  local
87 	xact = malloc(sizeof(*xact), M_DEVBUF, M_WAITOK | M_ZERO);  in vmbus_xact_alloc()
88 	xact->x_ctx = ctx;  in vmbus_xact_alloc()
91 	xact->x_req = contigmalloc(ctx->xc_req_size, M_DEVBUF,  in vmbus_xact_alloc()
93 	if (xact->x_req == NULL) {  in vmbus_xact_alloc()
94 		free(xact, M_DEVBUF);  in vmbus_xact_alloc()
98 		xact->x_priv = malloc(ctx->xc_priv_size, M_DEVBUF, M_WAITOK);  in vmbus_xact_alloc()
99 	xact->x_resp0 = malloc(ctx->xc_resp_size, M_DEVBUF, M_WAITOK);  in vmbus_xact_alloc()
101 	return (xact);  in vmbus_xact_alloc()
105 vmbus_xact_free(struct vmbus_xact *xact)  in vmbus_xact_free()  argument
108 	contigfree(xact->x_req, xact->x_ctx->xc_req_size, M_DEVBUF);  in vmbus_xact_free()
109 	free(xact->x_resp0, M_DEVBUF);  in vmbus_xact_free()
110 	if (xact->x_priv != NULL)  in vmbus_xact_free()
111 		free(xact->x_priv, M_DEVBUF);  in vmbus_xact_free()
112 	free(xact, M_DEVBUF);  in vmbus_xact_free()
118 	struct vmbus_xact *xact;  in vmbus_xact_get1()  local
126 		xact = NULL;  in vmbus_xact_get1()
128 		xact = ctx->xc_free;  in vmbus_xact_get1()
129 		KASSERT(xact != NULL, ("no free xact"));  in vmbus_xact_get1()
130 		KASSERT(xact->x_resp == NULL, ("xact has pending response"));  in vmbus_xact_get1()
136 	return (xact);  in vmbus_xact_get1()
207 	struct vmbus_xact *xact;  in vmbus_xact_get()  local
212 	xact = vmbus_xact_get1(ctx, VMBUS_XACT_CTXF_DESTROY);  in vmbus_xact_get()
213 	if (xact == NULL)  in vmbus_xact_get()
216 	memset(xact->x_req, 0, req_len);  in vmbus_xact_get()
217 	return (xact);  in vmbus_xact_get()
221 vmbus_xact_put(struct vmbus_xact *xact)  in vmbus_xact_put()  argument
223 	struct vmbus_xact_ctx *ctx = xact->x_ctx;  in vmbus_xact_put()
226 	xact->x_resp = NULL;  in vmbus_xact_put()
230 	ctx->xc_free = xact;  in vmbus_xact_put()
236 vmbus_xact_req_data(const struct vmbus_xact *xact)  in vmbus_xact_req_data()  argument
239 	return (xact->x_req);  in vmbus_xact_req_data()
243 vmbus_xact_req_paddr(const struct vmbus_xact *xact)  in vmbus_xact_req_paddr()  argument
246 	return (pmap_kextract((vm_offset_t)xact->x_req));  in vmbus_xact_req_paddr()
250 vmbus_xact_priv(const struct vmbus_xact *xact, size_t priv_len)  in vmbus_xact_priv()  argument
253 	if (priv_len > xact->x_ctx->xc_priv_size)  in vmbus_xact_priv()
255 	return (xact->x_priv);  in vmbus_xact_priv()
259 vmbus_xact_activate(struct vmbus_xact *xact)  in vmbus_xact_activate()  argument
261 	struct vmbus_xact_ctx *ctx = xact->x_ctx;  in vmbus_xact_activate()
263 	KASSERT(xact->x_resp == NULL, ("xact has pending response"));  in vmbus_xact_activate()
267 	ctx->xc_active = xact;  in vmbus_xact_activate()
272 vmbus_xact_deactivate(struct vmbus_xact *xact)  in vmbus_xact_deactivate()  argument
274 	struct vmbus_xact_ctx *ctx = xact->x_ctx;  in vmbus_xact_deactivate()
277 	KASSERT(ctx->xc_active == xact, ("xact mismatch"));  in vmbus_xact_deactivate()
283 vmbus_xact_return(struct vmbus_xact *xact, size_t *resp_len)  in vmbus_xact_return()  argument
285 	struct vmbus_xact_ctx *ctx = xact->x_ctx;  in vmbus_xact_return()
289 	KASSERT(ctx->xc_active == xact, ("xact trashed"));  in vmbus_xact_return()
291 	if ((ctx->xc_flags & VMBUS_XACT_CTXF_DESTROY) && xact->x_resp == NULL) {  in vmbus_xact_return()
301 	KASSERT(xact->x_resp != NULL, ("no response"));  in vmbus_xact_return()
305 	resp = xact->x_resp;  in vmbus_xact_return()
306 	*resp_len = xact->x_resp_len;  in vmbus_xact_return()
312 vmbus_xact_wait1(struct vmbus_xact *xact, size_t *resp_len,  in vmbus_xact_wait1()  argument
315 	struct vmbus_xact_ctx *ctx = xact->x_ctx;  in vmbus_xact_wait1()
320 	KASSERT(ctx->xc_active == xact, ("xact mismatch"));  in vmbus_xact_wait1()
321 	while (xact->x_resp == NULL &&  in vmbus_xact_wait1()
332 	resp = vmbus_xact_return(xact, resp_len);  in vmbus_xact_wait1()
340 vmbus_xact_wait(struct vmbus_xact *xact, size_t *resp_len)  in vmbus_xact_wait()  argument
343 	return (vmbus_xact_wait1(xact, resp_len, true /* can sleep */));  in vmbus_xact_wait()
347 vmbus_xact_busywait(struct vmbus_xact *xact, size_t *resp_len)  in vmbus_xact_busywait()  argument
350 	return (vmbus_xact_wait1(xact, resp_len, false /* can't sleep */));  in vmbus_xact_busywait()
354 vmbus_xact_poll(struct vmbus_xact *xact, size_t *resp_len)  in vmbus_xact_poll()  argument
356 	struct vmbus_xact_ctx *ctx = xact->x_ctx;  in vmbus_xact_poll()
361 	KASSERT(ctx->xc_active == xact, ("xact mismatch"));  in vmbus_xact_poll()
362 	if (xact->x_resp == NULL &&  in vmbus_xact_poll()
368 	resp = vmbus_xact_return(xact, resp_len);  in vmbus_xact_poll()
376 vmbus_xact_save_resp(struct vmbus_xact *xact, const void *data, size_t dlen)  in vmbus_xact_save_resp()  argument
378 	struct vmbus_xact_ctx *ctx = xact->x_ctx;  in vmbus_xact_save_resp()
389 	KASSERT(ctx->xc_active == xact, ("xact mismatch"));  in vmbus_xact_save_resp()
390 	memcpy(xact->x_resp0, data, cplen);  in vmbus_xact_save_resp()
391 	xact->x_resp_len = cplen;  in vmbus_xact_save_resp()
392 	xact->x_resp = xact->x_resp0;  in vmbus_xact_save_resp()
396 vmbus_xact_wakeup(struct vmbus_xact *xact, const void *data, size_t dlen)  in vmbus_xact_wakeup()  argument
398 	struct vmbus_xact_ctx *ctx = xact->x_ctx;  in vmbus_xact_wakeup()
407 		vmbus_xact_save_resp(xact, data, dlen);  in vmbus_xact_wakeup()