216 	ge_slot_t *gs;  in gs_get()  local
232 	gs = kmem_cache_alloc(xdf_gs_cache, KM_NOSLEEP);  in gs_get()
233 	if (gs == NULL) {  in gs_get()
243 	gs->gs_oeid = vdp->xdf_peer;  in gs_get()
244 	gs->gs_isread = isread;  in gs_get()
245 	gs->gs_ghead = gh;  in gs_get()
246 	gs->gs_ngrefs = 0;  in gs_get()
248 	return (gs);  in gs_get()
252 gs_free(ge_slot_t *gs)  in gs_free()  argument
257 	for (i = 0; i < gs->gs_ngrefs; i++)  in gs_free()
258 		gnttab_end_foreign_access(gs->gs_ge[i], !gs->gs_isread, 0);  in gs_free()
259 	gnttab_free_grant_references(gs->gs_ghead);  in gs_free()
260 	list_remove(&gs->gs_vreq->v_gs, gs);  in gs_free()
261 	kmem_cache_free(xdf_gs_cache, gs);  in gs_free()
265 gs_grant(ge_slot_t *gs, mfn_t mfn)  in gs_grant()  argument
267 	grant_ref_t gr = gnttab_claim_grant_reference(&gs->gs_ghead);  in gs_grant()
270 	ASSERT(gs->gs_ngrefs < BLKIF_MAX_SEGMENTS_PER_REQUEST);  in gs_grant()
271 	gs->gs_ge[gs->gs_ngrefs++] = gr;  in gs_grant()
272 	gnttab_grant_foreign_access_ref(gr, gs->gs_oeid, mfn, !gs->gs_isread);  in gs_grant()
396 	ge_slot_t *gs;  in vreq_setup()  local
407 			if ((gs = gs_get(vdp, IS_READ(bp))) == NULL) {  in vreq_setup()
416 			gs->gs_vreq = vreq;  in vreq_setup()
417 			list_insert_head(&vreq->v_gs, gs);  in vreq_setup()
545 		if ((gs = gs_get(vdp, IS_READ(bp))) == NULL) {  in vreq_setup()
552 		gs->gs_vreq = vreq;  in vreq_setup()
553 		list_insert_head(&vreq->v_gs, gs);  in vreq_setup()
567 		if ((gs = gs_get(vdp, IS_READ(bp))) == NULL) {  in vreq_setup()
577 		gs->gs_vreq = vreq;  in vreq_setup()
578 		list_insert_head(&vreq->v_gs, gs);  in vreq_setup()
905 	ge_slot_t	*gs = (ge_slot_t *)(uintptr_t)id;  in xdf_io_fini()  local
906 	v_req_t		*vreq = gs->gs_vreq;  in xdf_io_fini()
912 	gs_free(gs);  in xdf_io_fini()
1081 	ge_slot_t	*gs;  in xdf_ring_destroy()  local
1124 		while ((gs = list_head(&vreq->v_gs)) != NULL)  in xdf_ring_destroy()
1125 			gs_free(gs);  in xdf_ring_destroy()
1243 	ge_slot_t	*gs = list_head(&vreq->v_gs);  in xdf_process_rreq()  local
1257 			    (uint64_t)(uintptr_t)(gs));  in xdf_process_rreq()
1278 	ddi_put64(acchdl, &rreq->id, (uint64_t)(uintptr_t)(gs));  in xdf_process_rreq()
1300 		gr = gs_grant(gs, PATOMA(dma_addr) >> PAGESHIFT);  in xdf_process_rreq()