diff options
Diffstat (limited to 'usr/src/uts/common/xen/sys/xendev.h')
| -rw-r--r-- | usr/src/uts/common/xen/sys/xendev.h | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/usr/src/uts/common/xen/sys/xendev.h b/usr/src/uts/common/xen/sys/xendev.h new file mode 100644 index 0000000000..b00a71fcf4 --- /dev/null +++ b/usr/src/uts/common/xen/sys/xendev.h @@ -0,0 +1,212 @@ +/* + * 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 2007 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> +#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" + +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 */ |