/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _SYS_XENDEV_H #define _SYS_XENDEV_H #pragma ident "%Z%%M% %I% %E% SMI" #include <sys/hypervisor.h> #include <sys/taskq.h> #ifdef XPV_HVM_DRIVER #include <public/io/ring.h> #include <public/event_channel.h> #include <public/grant_table.h> #endif #include <xen/sys/xenbus_impl.h> #ifdef __cplusplus extern "C" { #endif /* * Xen device class codes */ typedef enum { XEN_INVAL = -1, XEN_CONSOLE = 0, XEN_VNET, XEN_VBLK, XEN_XENBUS, XEN_DOMCAPS, XEN_BALLOON, XEN_EVTCHN, XEN_PRIVCMD, XEN_LASTCLASS } xendev_devclass_t; /* * Hotplug request sent to userland event handler. */ typedef enum { XEN_HP_ADD, XEN_HP_REMOVE } xendev_hotplug_cmd_t; /* * Hotplug status. * * In fact, the Xen tools can write any arbitrary string into the * hotplug-status node. We represent the known values here - anything * else will be 'Unrecognized'. */ typedef enum { Unrecognized, Connected } xendev_hotplug_state_t; struct xendev_ppd { int xd_evtchn; struct intrspec xd_ispec; xendev_devclass_t xd_devclass; domid_t xd_domain; int xd_vdevnum; struct xenbus_device xd_xsdev; struct xenbus_watch xd_hp_watch; struct xenbus_watch xd_bepath_watch; kmutex_t xd_lk; ddi_callback_id_t xd_oe_ehid; ddi_callback_id_t xd_hp_ehid; ddi_taskq_t *xd_oe_taskq; ddi_taskq_t *xd_hp_taskq; }; #define XS_OE_STATE "SUNW,xendev:otherend_state" #define XS_HP_STATE "SUNW,xendev:hotplug_state" /* * A device with xd_vdevnum == VDEV_NOXS does not participate in * xenstore. */ #define VDEV_NOXS (-1) void xendev_enum_class(dev_info_t *, xendev_devclass_t); void xendev_enum_all(dev_info_t *, boolean_t); xendev_devclass_t xendev_nodename_to_devclass(char *); int xendev_devclass_ipl(xendev_devclass_t); struct intrspec *xendev_get_ispec(dev_info_t *, uint_t); void xvdi_suspend(dev_info_t *); int xvdi_resume(dev_info_t *); int xvdi_alloc_evtchn(dev_info_t *); int xvdi_bind_evtchn(dev_info_t *, evtchn_port_t); void xvdi_free_evtchn(dev_info_t *); int xvdi_add_event_handler(dev_info_t *, char *, void (*)(dev_info_t *, ddi_eventcookie_t, void *, void *)); void xvdi_remove_event_handler(dev_info_t *, char *); int xvdi_get_evtchn(dev_info_t *); int xvdi_get_vdevnum(dev_info_t *); char *xvdi_get_xsname(dev_info_t *); char *xvdi_get_oename(dev_info_t *); domid_t xvdi_get_oeid(dev_info_t *); void xvdi_dev_error(dev_info_t *, int, char *); void xvdi_fatal_error(dev_info_t *, int, char *); void xvdi_notify_oe(dev_info_t *); int xvdi_post_event(dev_info_t *, xendev_hotplug_cmd_t); struct xenbus_device *xvdi_get_xsd(dev_info_t *); int xvdi_switch_state(dev_info_t *, xenbus_transaction_t, XenbusState); dev_info_t *xvdi_create_dev(dev_info_t *, xendev_devclass_t, domid_t, int); int xvdi_init_dev(dev_info_t *); void xvdi_uninit_dev(dev_info_t *); dev_info_t *xvdi_find_dev(dev_info_t *, xendev_devclass_t, domid_t, int); /* * common ring interfaces */ /* * we need the pad between ring index * and the real ring containing requests/responses, * so that we can map comif_sring_t structure to * any xxxif_sring_t structure defined via macros in ring.h */ #define SRINGPAD 48 typedef struct comif_sring { RING_IDX req_prod, req_event; RING_IDX rsp_prod, rsp_event; uint8_t pad[SRINGPAD]; /* * variable length * stores real request/response entries * entry size is fixed per ring */ char ring[1]; } comif_sring_t; typedef struct comif_ring_fe { /* * keep the member names as defined in ring.h * in order to make use of the pre-defined macros */ RING_IDX req_prod_pvt; RING_IDX rsp_cons; unsigned int nr_ents; comif_sring_t *sring; } comif_ring_fe_t; typedef struct comif_ring_be { /* * keep the member names as defined in ring.h * in order to make use of the pre-defined macros */ RING_IDX rsp_prod_pvt; RING_IDX req_cons; unsigned int nr_ents; comif_sring_t *sring; } comif_ring_be_t; typedef union comif_ring { comif_ring_fe_t fr; comif_ring_be_t br; } comif_ring_t; typedef struct xendev_req { unsigned long next; void *req; } xendev_req_t; typedef struct xendev_ring { ddi_dma_handle_t xr_dma_hdl; ddi_acc_handle_t xr_acc_hdl; grant_handle_t xr_grant_hdl; caddr_t xr_vaddr; paddr_t xr_paddr; grant_ref_t xr_gref; int xr_entry_size; int xr_frontend; comif_ring_t xr_sring; } xendev_ring_t; int xvdi_alloc_ring(dev_info_t *, size_t, size_t, grant_ref_t *, xendev_ring_t **); void xvdi_free_ring(xendev_ring_t *); int xvdi_map_ring(dev_info_t *, size_t, size_t, grant_ref_t, xendev_ring_t **); void xvdi_unmap_ring(xendev_ring_t *); uint_t xvdi_ring_avail_slots(xendev_ring_t *); int xvdi_ring_has_unconsumed_requests(xendev_ring_t *); int xvdi_ring_has_incomp_request(xendev_ring_t *); int xvdi_ring_has_unconsumed_responses(xendev_ring_t *); void* xvdi_ring_get_request(xendev_ring_t *); int xvdi_ring_push_request(xendev_ring_t *); void* xvdi_ring_get_response(xendev_ring_t *); int xvdi_ring_push_response(xendev_ring_t *); #ifdef __cplusplus } #endif #endif /* _SYS_XENDEV_H */