/* * 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 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * Copyright 2012 Garrett D'Amore . All rights reserved. * Copyright 2017 Nexenta Systems, Inc. */ /* * Host to hypervisor virtual devices nexus driver * * TODO: * - Add watchpoints on vbd/vif and enumerate/offline on watch callback * - Add DR IOCTLs * - Filter/restrict property lookups into xenstore */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef XPV_HVM_DRIVER #include #include #include #include #include #include #include #else #include #include #include #endif #include #include /* * DDI dev_ops entrypoints */ static int xpvd_info(dev_info_t *, ddi_info_cmd_t, void *, void **); static int xpvd_attach(dev_info_t *devi, ddi_attach_cmd_t cmd); static int xpvd_detach(dev_info_t *devi, ddi_detach_cmd_t cmd); /* * NDI bus_ops entrypoints */ static int xpvd_ctlops(dev_info_t *, dev_info_t *, ddi_ctl_enum_t, void *, void *); static int xpvd_intr_ops(dev_info_t *, dev_info_t *, ddi_intr_op_t, ddi_intr_handle_impl_t *, void *); static int xpvd_prop_op(dev_t, dev_info_t *, dev_info_t *, ddi_prop_op_t, int, char *, caddr_t, int *); static int xpvd_bus_config(dev_info_t *, uint_t, ddi_bus_config_op_t, void *, dev_info_t **); static int xpvd_bus_unconfig(dev_info_t *, uint_t, ddi_bus_config_op_t, void *); static int xpvd_get_eventcookie(dev_info_t *, dev_info_t *, char *, ddi_eventcookie_t *); static int xpvd_add_eventcall(dev_info_t *, dev_info_t *, ddi_eventcookie_t, void (*)(dev_info_t *, ddi_eventcookie_t, void *, void *), void *, ddi_callback_id_t *); static int xpvd_remove_eventcall(dev_info_t *, ddi_callback_id_t); static int xpvd_post_event(dev_info_t *, dev_info_t *, ddi_eventcookie_t, void *); /* * misc functions */ static int xpvd_enable_intr(dev_info_t *, ddi_intr_handle_impl_t *, int); static void xpvd_disable_intr(dev_info_t *, ddi_intr_handle_impl_t *, int); static int xpvd_removechild(dev_info_t *); static int xpvd_initchild(dev_info_t *); static int xpvd_name_child(dev_info_t *, char *, int); static boolean_t i_xpvd_parse_devname(char *, xendev_devclass_t *, domid_t *, int *); /* Extern declarations */ extern int (*psm_intr_ops)(dev_info_t *, ddi_intr_handle_impl_t *, psm_intr_op_t, int *); struct bus_ops xpvd_bus_ops = { BUSO_REV, i_ddi_bus_map, NULL, NULL, NULL, i_ddi_map_fault, NULL, ddi_dma_allochdl, ddi_dma_freehdl, ddi_dma_bindhdl, ddi_dma_unbindhdl, ddi_dma_flush, ddi_dma_win, ddi_dma_mctl, xpvd_ctlops, xpvd_prop_op, xpvd_get_eventcookie, xpvd_add_eventcall, xpvd_remove_eventcall, xpvd_post_event, 0, /* (*bus_intr_ctl)(); */ xpvd_bus_config, xpvd_bus_unconfig, NULL, /* (*bus_fm_init)(); */ NULL, /* (*bus_fm_fini)(); */ NULL, /* (*bus_fm_access_enter)(); */ NULL, /* (*bus_fm_access_exit)(); */ NULL, /* (*bus_power)(); */ xpvd_intr_ops /* (*bus_intr_op)(); */ }; struct dev_ops xpvd_ops = { DEVO_REV, /* devo_rev */ 0, /* refcnt */ xpvd_info, /* info */ nulldev, /* identify */ nulldev, /* probe */ xpvd_attach, /* attach */ xpvd_detach, /* detach */ nulldev, /* reset */ (struct cb_ops *)0, /* driver operations */ &xpvd_bus_ops, /* bus operations */ NULL, /* power */ ddi_quiesce_not_needed, /* quiesce */ }; dev_info_t *xpvd_dip; #define CF_DBG 0x1 #define ALL_DBG 0xff static ndi_event_definition_t xpvd_ndi_event_defs[] = { { 0, XS_OE_STATE, EPL_KERNEL, NDI_EVENT_POST_TO_TGT }, { 1, XS_HP_STATE, EPL_KERNEL, NDI_EVENT_POST_TO_TGT }, }; #define XENDEV_N_NDI_EVENTS \ (sizeof (xpvd_ndi_event_defs) / sizeof (xpvd_ndi_event_defs[0])) static ndi_event_set_t xpvd_ndi_events = { NDI_EVENTS_REV1, XENDEV_N_NDI_EVENTS, xpvd_ndi_event_defs }; static ndi_event_hdl_t xpvd_ndi_event_handle; /* * Hypervisor interrupt capabilities */ #define XENDEV_INTR_CAPABILITIES \ (DDI_INTR_FLAG_EDGE | DDI_INTR_FLAG_MASKABLE | DDI_INTR_FLAG_PENDING) /* * Module linkage information for the kernel. */ static struct modldrv modldrv = { &mod_driverops, /* Type of module */ "virtual device nexus driver", &xpvd_ops, /* driver ops */ }; static struct modlinkage modlinkage = { MODREV_1, (void *)&modldrv, NULL }; int _init(void) { return (mod_install(&modlinkage)); } int _fini(void) { return (mod_remove(&modlinkage)); } int _info(struct modinfo *modinfop) { return (mod_info(&modlinkage, modinfop)); } /* ARGSUSED */ static int xpvd_info(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, void **result) { switch (cmd) { default: return (DDI_FAILURE); case DDI_INFO_DEVT2INSTANCE: *result = (void *)0; return (DDI_SUCCESS); case DDI_INFO_DEVT2DEVINFO: *result = (void *)xpvd_dip; return (DDI_SUCCESS); } } /*ARGSUSED*/ static int xpvd_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) { extern void xvdi_watch_devices(int); #ifdef XPV_HVM_DRIVER extern dev_info_t *xpv_dip; if (xpv_dip == NULL) { if (ddi_hold_installed_driver(ddi_name_to_major("xpv")) == NULL) { cmn_err(CE_WARN, "Couldn't initialize xpv framework"); return (DDI_FAILURE); } } #endif /* XPV_HVM_DRIVER */ if (ndi_event_alloc_hdl(devi, 0, &xpvd_ndi_event_handle, NDI_SLEEP) != NDI_SUCCESS) { xpvd_dip = NULL; return (DDI_FAILURE); } if (ndi_event_bind_set(xpvd_ndi_event_handle, &xpvd_ndi_events, NDI_SLEEP) != NDI_SUCCESS) { (void) ndi_event_free_hdl(xpvd_ndi_event_handle); xpvd_dip = NULL; return (DDI_FAILURE); } if (ddi_create_minor_node(devi, "devctl", S_IFCHR, ddi_get_instance(devi), DDI_PSEUDO, 0) != DDI_SUCCESS) { (void) ndi_event_unbind_set(xpvd_ndi_event_handle, &xpvd_ndi_events, NDI_SLEEP); (void) ndi_event_free_hdl(xpvd_ndi_event_handle); xpvd_dip = NULL; return (DDI_FAILURE); } #ifdef XPV_HVM_DRIVER (void) ddi_prop_update_int(DDI_DEV_T_NONE, devi, DDI_NO_AUTODETACH, 1); /* * Report our version to dom0. */ if (xenbus_printf(XBT_NULL, "guest/xpvd", "version", "%d", HVMPV_XPVD_VERS)) cmn_err(CE_WARN, "xpvd: couldn't write version\n"); #endif /* XPV_HVM_DRIVER */ /* watch both frontend and backend for new devices */ if (DOMAIN_IS_INITDOMAIN(xen_info)) (void) xs_register_xenbus_callback(xvdi_watch_devices); else xvdi_watch_devices(XENSTORE_UP); xpvd_dip = devi; ddi_report_dev(devi); return (DDI_SUCCESS); } /*ARGSUSED*/ static int xpvd_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) { return (DDI_FAILURE); } /* * xpvd_prop_op() * * Query xenstore for the value of properties if DDI_PROP_NOTPROM * is not set. Xenstore property values are represented as ascii strings. */ static int xpvd_prop_op(dev_t dev, dev_info_t *dip, dev_info_t *ch_dip, ddi_prop_op_t prop_op, int mod_flags, char *name, caddr_t valuep, int *lengthp) { caddr_t buff; struct xendev_ppd *pdp; void *prop_str; size_t prop_len; unsigned int len; int rv; pdp = (struct xendev_ppd *)ddi_get_parent_data(ch_dip); if ((pdp == NULL) || !(mod_flags & (DDI_PROP_CANSLEEP)) || (mod_flags & DDI_PROP_NOTPROM) || (pdp->xd_xsdev.nodename == NULL)) goto toss_off; /* * First try reading the property off the the frontend. if that * fails, try and read it from the backend node. If that * also fails, pass the request on the DDI framework */ prop_str = NULL; if ((xenbus_read(XBT_NULL, pdp->xd_xsdev.nodename, name, &prop_str, &len) == 0) && (prop_str != NULL) && (strlen(prop_str) != 0)) goto got_xs_prop; prop_str = NULL; if ((pdp->xd_xsdev.otherend != NULL) && (xenbus_read(XBT_NULL, pdp->xd_xsdev.otherend, name, &prop_str, &len) == 0) && (prop_str != NULL) && (strlen(prop_str) != 0)) goto got_xs_prop; toss_off: return (ddi_bus_prop_op(dev, dip, ch_dip, prop_op, mod_flags | DDI_PROP_NOTPROM, name, valuep, lengthp)); got_xs_prop: prop_len = strlen(prop_str) + 1; rv = DDI_PROP_SUCCESS; switch (prop_op) { case PROP_LEN: *lengthp = prop_len; break; case PROP_LEN_AND_VAL_ALLOC: buff = kmem_alloc((size_t)prop_len, KM_SLEEP); *(caddr_t *)valuep = (caddr_t)buff; break; case PROP_LEN_AND_VAL_BUF: buff = (caddr_t)valuep; if (*lengthp < prop_len) rv = DDI_PROP_BUF_TOO_SMALL; break; default: rv = DDI_PROP_INVAL_ARG; break; } if ((rv == DDI_PROP_SUCCESS) && (prop_len > 0)) { bcopy(prop_str, buff, prop_len); *lengthp = prop_len; } kmem_free(prop_str, len); return (rv); } /* * return address of the device's interrupt spec structure. */ /*ARGSUSED*/ struct intrspec * xpvd_get_ispec(dev_info_t *rdip, uint_t inumber) { struct xendev_ppd *pdp; ASSERT(inumber == 0); if ((pdp = ddi_get_parent_data(rdip)) == NULL) return (NULL); return (&pdp->xd_ispec); } /* * return (and determine) the interrupt priority of the device. */ /*ARGSUSED*/ static int xpvd_get_priority(dev_info_t *dip, int inum, int *pri) { struct xendev_ppd *pdp; struct intrspec *ispec; int *intpriorities; uint_t num_intpriorities; DDI_INTR_NEXDBG((CE_CONT, "xpvd_get_priority: dip = 0x%p\n", (void *)dip)); ASSERT(inum == 0); if ((pdp = ddi_get_parent_data(dip)) == NULL) return (DDI_FAILURE); ispec = &pdp->xd_ispec; /* * Set the default priority based on the device class. The * "interrupt-priorities" property can be used to override * the default. */ if (ispec->intrspec_pri == 0) { ispec->intrspec_pri = xendev_devclass_ipl(pdp->xd_devclass); if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, dip, DDI_PROP_NOTPROM | DDI_PROP_DONTPASS, "interrupt-priorities", &intpriorities, &num_intpriorities) == DDI_PROP_SUCCESS) { ispec->intrspec_pri = intpriorities[0]; ddi_prop_free(intpriorities); } } *pri = ispec->intrspec_pri; return (DDI_SUCCESS); } /* * xpvd_intr_ops: bus_intr_op() function for interrupt support */ /* ARGSUSED */ static int xpvd_intr_ops(dev_info_t *pdip, dev_info_t *rdip, ddi_intr_op_t intr_op, ddi_intr_handle_impl_t *hdlp, void *result) { int priority = 0; struct intrspec *ispec; struct xendev_ppd *pdp; DDI_INTR_NEXDBG((CE_CONT, "xpvd_intr_ops: pdip 0x%p, rdip 0x%p, op %x handle 0x%p\n", (void *)pdip, (void *)rdip, intr_op, (void *)hdlp)); /* Process the request */ switch (intr_op) { case DDI_INTROP_SUPPORTED_TYPES: /* Fixed supported by default */ *(int *)result = DDI_INTR_TYPE_FIXED; break; case DDI_INTROP_NINTRS: *(int *)result = 1; break; case DDI_INTROP_ALLOC: /* * FIXED interrupts: just return available interrupts */ if (hdlp->ih_type == DDI_INTR_TYPE_FIXED) { /* * event channels are edge-triggered, maskable, * and support int pending. */ hdlp->ih_cap |= XENDEV_INTR_CAPABILITIES; *(int *)result = 1; /* DDI_INTR_TYPE_FIXED */ } else { return (DDI_FAILURE); } break; case DDI_INTROP_FREE: ispec = xpvd_get_ispec(rdip, (int)hdlp->ih_inum); if (ispec == NULL) return (DDI_FAILURE); ispec->intrspec_pri = 0; /* mark as un-initialized */ break; case DDI_INTROP_GETPRI: if (xpvd_get_priority(rdip, hdlp->ih_inum, &priority) != DDI_SUCCESS) return (DDI_FAILURE); DDI_INTR_NEXDBG((CE_CONT, "xpvd_intr_ops: priority = 0x%x\n", priority)); *(int *)result = priority; break; case DDI_INTROP_SETPRI: /* Validate the interrupt priority passed */ if (*(int *)result > LOCK_LEVEL) return (DDI_FAILURE); /* Ensure that PSM is all initialized */ if (psm_intr_ops == NULL) return (DDI_FAILURE); /* Change the priority */ if ((*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_SET_PRI, result) == PSM_FAILURE) return (DDI_FAILURE); ispec = xpvd_get_ispec(rdip, (int)hdlp->ih_inum); if (ispec == NULL) return (DDI_FAILURE); ispec->intrspec_pri = *(int *)result; break; case DDI_INTROP_ADDISR: /* update ispec */ ispec = xpvd_get_ispec(rdip, (int)hdlp->ih_inum); if (ispec == NULL) return (DDI_FAILURE); ispec->intrspec_func = hdlp->ih_cb_func; break; case DDI_INTROP_REMISR: ispec = xpvd_get_ispec(rdip, (int)hdlp->ih_inum); pdp = (struct xendev_ppd *)ddi_get_parent_data(rdip); ASSERT(pdp != NULL); ASSERT(pdp->xd_evtchn != INVALID_EVTCHN); if (ispec) { ispec->intrspec_vec = 0; ispec->intrspec_func = (uint_t (*)()) 0; } pdp->xd_evtchn = INVALID_EVTCHN; break; case DDI_INTROP_GETCAP: if (hdlp->ih_type == DDI_INTR_TYPE_FIXED) { /* * event channels are edge-triggered, maskable, * and support int pending. */ *(int *)result = XENDEV_INTR_CAPABILITIES; } else { *(int *)result = 0; return (DDI_FAILURE); } DDI_INTR_NEXDBG((CE_CONT, "xpvd: GETCAP returned = %x\n", *(int *)result)); break; case DDI_INTROP_SETCAP: DDI_INTR_NEXDBG((CE_CONT, "xpvd_intr_ops: SETCAP cap=0x%x\n", *(int *)result)); if (psm_intr_ops == NULL) return (DDI_FAILURE); if ((*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_SET_CAP, result)) { DDI_INTR_NEXDBG((CE_CONT, "GETCAP: psm_intr_ops" " returned failure\n")); return (DDI_FAILURE); } break; case DDI_INTROP_ENABLE: if (psm_intr_ops == NULL) return (DDI_FAILURE); if (xpvd_enable_intr(rdip, hdlp, (int)hdlp->ih_inum) != DDI_SUCCESS) return (DDI_FAILURE); DDI_INTR_NEXDBG((CE_CONT, "xpvd_intr_ops: ENABLE vec=0x%x\n", hdlp->ih_vector)); break; case DDI_INTROP_DISABLE: if (psm_intr_ops == NULL) return (DDI_FAILURE); xpvd_disable_intr(rdip, hdlp, hdlp->ih_inum); DDI_INTR_NEXDBG((CE_CONT, "xpvd_intr_ops: DISABLE vec = %x\n", hdlp->ih_vector)); break; case DDI_INTROP_BLOCKENABLE: case DDI_INTROP_BLOCKDISABLE: return (DDI_FAILURE); case DDI_INTROP_SETMASK: case DDI_INTROP_CLRMASK: #ifdef XPV_HVM_DRIVER return (DDI_ENOTSUP); #else /* * Handle this here */ if (hdlp->ih_type != DDI_INTR_TYPE_FIXED) return (DDI_FAILURE); if (intr_op == DDI_INTROP_SETMASK) { ec_disable_irq(hdlp->ih_vector); } else { ec_enable_irq(hdlp->ih_vector); } break; #endif case DDI_INTROP_GETPENDING: #ifdef XPV_HVM_DRIVER return (DDI_ENOTSUP); #else if (hdlp->ih_type != DDI_INTR_TYPE_FIXED) return (DDI_FAILURE); *(int *)result = ec_pending_irq(hdlp->ih_vector); DDI_INTR_NEXDBG((CE_CONT, "xpvd: GETPENDING returned = %x\n", *(int *)result)); break; #endif case DDI_INTROP_NAVAIL: *(int *)result = 1; DDI_INTR_NEXDBG((CE_CONT, "xpvd: NAVAIL returned = %x\n", *(int *)result)); break; default: return (i_ddi_intr_ops(pdip, rdip, intr_op, hdlp, result)); } return (DDI_SUCCESS); } static int xpvd_enable_intr(dev_info_t *rdip, ddi_intr_handle_impl_t *hdlp, int inum) { int vector; ihdl_plat_t *ihdl_plat_datap = (ihdl_plat_t *)hdlp->ih_private; DDI_INTR_NEXDBG((CE_CONT, "xpvd_enable_intr: hdlp %p inum %x\n", (void *)hdlp, inum)); ihdl_plat_datap->ip_ispecp = xpvd_get_ispec(rdip, inum); if (ihdl_plat_datap->ip_ispecp == NULL) return (DDI_FAILURE); /* translate the interrupt if needed */ (void) (*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_XLATE_VECTOR, &vector); DDI_INTR_NEXDBG((CE_CONT, "xpvd_enable_intr: priority=%x vector=%x\n", hdlp->ih_pri, vector)); /* Add the interrupt handler */ if (!add_avintr((void *)hdlp, hdlp->ih_pri, hdlp->ih_cb_func, DEVI(rdip)->devi_name, vector, hdlp->ih_cb_arg1, hdlp->ih_cb_arg2, NULL, rdip)) return (DDI_FAILURE); /* Note this really is an irq. */ hdlp->ih_vector = (ushort_t)vector; return (DDI_SUCCESS); } static void xpvd_disable_intr(dev_info_t *rdip, ddi_intr_handle_impl_t *hdlp, int inum) { int vector; ihdl_plat_t *ihdl_plat_datap = (ihdl_plat_t *)hdlp->ih_private; DDI_INTR_NEXDBG((CE_CONT, "xpvd_disable_intr: \n")); ihdl_plat_datap->ip_ispecp = xpvd_get_ispec(rdip, inum); if (ihdl_plat_datap->ip_ispecp == NULL) return; /* translate the interrupt if needed */ (void) (*psm_intr_ops)(rdip, hdlp, PSM_INTR_OP_XLATE_VECTOR, &vector); /* Disable the interrupt handler */ rem_avintr((void *)hdlp, hdlp->ih_pri, hdlp->ih_cb_func, vector); ihdl_plat_datap->ip_ispecp = NULL; } /*ARGSUSED*/ static int xpvd_ctlops(dev_info_t *dip, dev_info_t *rdip, ddi_ctl_enum_t ctlop, void *arg, void *result) { switch (ctlop) { case DDI_CTLOPS_REPORTDEV: if (rdip == (dev_info_t *)0) return (DDI_FAILURE); cmn_err(CE_CONT, "?%s@%s, %s%d\n", ddi_node_name(rdip), ddi_get_name_addr(rdip), ddi_driver_name(rdip), ddi_get_instance(rdip)); return (DDI_SUCCESS); case DDI_CTLOPS_INITCHILD: return (xpvd_initchild((dev_info_t *)arg)); case DDI_CTLOPS_UNINITCHILD: return (xpvd_removechild((dev_info_t *)arg)); case DDI_CTLOPS_SIDDEV: return (DDI_SUCCESS); case DDI_CTLOPS_REGSIZE: case DDI_CTLOPS_NREGS: return (DDI_FAILURE); case DDI_CTLOPS_POWER: { return (ddi_ctlops(dip, rdip, ctlop, arg, result)); } default: return (ddi_ctlops(dip, rdip, ctlop, arg, result)); } /* NOTREACHED */ } /* * Assign the address portion of the node name */ static int xpvd_name_child(dev_info_t *child, char *addr, int addrlen) { int *domain, *vdev; uint_t ndomain, nvdev; char *prop_str; /* * i_xpvd_parse_devname() knows the formats used by this * routine. If this code changes, so must that. */ if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "domain", &domain, &ndomain) != DDI_PROP_SUCCESS) return (DDI_FAILURE); ASSERT(ndomain == 1); /* * Use "domain" and "vdev" properties (backend drivers). */ if (*domain != DOMID_SELF) { if (ddi_prop_lookup_int_array(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "vdev", &vdev, &nvdev) != DDI_PROP_SUCCESS) { ddi_prop_free(domain); return (DDI_FAILURE); } ASSERT(nvdev == 1); (void) snprintf(addr, addrlen, "%d,%d", domain[0], vdev[0]); ddi_prop_free(vdev); ddi_prop_free(domain); return (DDI_SUCCESS); } ddi_prop_free(domain); /* * Use "unit-address" property (frontend/softdev drivers). */ if (ddi_prop_lookup_string(DDI_DEV_T_ANY, child, DDI_PROP_DONTPASS, "unit-address", &prop_str) != DDI_PROP_SUCCESS) return (DDI_FAILURE); (void) strlcpy(addr, prop_str, addrlen); ddi_prop_free(prop_str); return (DDI_SUCCESS); } static int xpvd_initchild(dev_info_t *child) { char addr[80]; /* * Pseudo nodes indicate a prototype node with per-instance * properties to be merged into the real h/w device node. */ if (ndi_dev_is_persistent_node(child) == 0) { ddi_set_parent_data(child, NULL); /* * Try to merge the properties from this prototype * node into real h/w nodes. */ if (ndi_merge_node(child, xpvd_name_child) == DDI_SUCCESS) { /* * Merged ok - return failure to remove the node. */ ddi_set_name_addr(child, NULL); return (DDI_FAILURE); } /* * The child was not merged into a h/w node, * but there's not much we can do with it other * than return failure to cause the node to be removed. */ cmn_err(CE_WARN, "!%s@%s: %s.conf properties not merged", ddi_get_name(child), ddi_get_name_addr(child), ddi_get_name(child)); ddi_set_name_addr(child, NULL); return (DDI_NOT_WELL_FORMED); } if (xvdi_init_dev(child) != DDI_SUCCESS) return (DDI_FAILURE); if (xpvd_name_child(child, addr, sizeof (addr)) != DDI_SUCCESS) { xvdi_uninit_dev(child); return (DDI_FAILURE); } ddi_set_name_addr(child, addr); return (DDI_SUCCESS); } static int xpvd_removechild(dev_info_t *dip) { xvdi_uninit_dev(dip); ddi_set_name_addr(dip, NULL); /* * Strip the node to properly convert it back to prototype * form. */ ddi_remove_minor_node(dip, NULL); return (DDI_SUCCESS); } static int xpvd_bus_unconfig(dev_info_t *parent, uint_t flag, ddi_bus_config_op_t op, void *device_name) { return (ndi_busop_bus_unconfig(parent, flag, op, device_name)); } /* * Given the name of a child of xpvd, determine the device class, * domain and vdevnum to which it refers. */ static boolean_t i_xpvd_parse_devname(char *name, xendev_devclass_t *devclassp, domid_t *domp, int *vdevp) { int len = strlen(name) + 1; char *device_name = i_ddi_strdup(name, KM_SLEEP); char *cname = NULL, *caddr = NULL; boolean_t ret; i_ddi_parse_name(device_name, &cname, &caddr, NULL); if ((cname == NULL) || (strlen(cname) == 0) || (caddr == NULL) || (strlen(caddr) == 0)) { ret = B_FALSE; goto done; } *devclassp = xendev_nodename_to_devclass(cname); if (*devclassp < 0) { ret = B_FALSE; goto done; } /* * Parsing the address component requires knowledge of how * xpvd_name_child() works. If that code changes, so must * this. */ /* Backend format is ",". */ if (sscanf(caddr, "%hu,%d", domp, vdevp) == 2) { ret = B_TRUE; goto done; } /* Frontend format is "". */ *domp = DOMID_SELF; if (sscanf(caddr, "%d", vdevp) == 1) ret = B_TRUE; done: kmem_free(device_name, len); return (ret); } /* * xpvd_bus_config() * * BUS_CONFIG_ONE: * Enumerate the exact instance of a driver. * * BUS_CONFIG_ALL: * Enumerate all the instances of all the possible children (seen before * and never seen before). * * BUS_CONFIG_DRIVER: * Enumerate all the instances of a particular driver. */ static int xpvd_bus_config(dev_info_t *parent, uint_t flag, ddi_bus_config_op_t op, void *arg, dev_info_t **childp) { int circ; char *cname = NULL; ndi_devi_enter(parent, &circ); switch (op) { case BUS_CONFIG_ONE: { xendev_devclass_t devclass; domid_t dom; int vdev; if (!i_xpvd_parse_devname(arg, &devclass, &dom, &vdev)) { ndi_devi_exit(parent, circ); return (NDI_FAILURE); } *childp = xvdi_find_dev(parent, devclass, dom, vdev); if (*childp == NULL) *childp = xvdi_create_dev(parent, devclass, dom, vdev); ndi_devi_exit(parent, circ); if (*childp == NULL) return (NDI_FAILURE); else return (ndi_busop_bus_config(parent, flag, op, arg, childp, 0)); } case BUS_CONFIG_DRIVER: { xendev_devclass_t devclass = XEN_INVAL; cname = ddi_major_to_name((major_t)(uintptr_t)arg); if (cname != NULL) devclass = xendev_nodename_to_devclass(cname); if (devclass == XEN_INVAL) { ndi_devi_exit(parent, circ); return (NDI_FAILURE); } else { xendev_enum_class(parent, devclass); ndi_devi_exit(parent, circ); return (ndi_busop_bus_config(parent, flag, op, arg, childp, 0)); } /* NOTREACHED */ } case BUS_CONFIG_ALL: xendev_enum_all(parent, B_FALSE); ndi_devi_exit(parent, circ); return (ndi_busop_bus_config(parent, flag, op, arg, childp, 0)); default: ndi_devi_exit(parent, circ); return (NDI_FAILURE); } } /*ARGSUSED*/ static int xpvd_get_eventcookie(dev_info_t *dip, dev_info_t *rdip, char *eventname, ddi_eventcookie_t *cookie) { return (ndi_event_retrieve_cookie(xpvd_ndi_event_handle, rdip, eventname, cookie, NDI_EVENT_NOPASS)); } /*ARGSUSED*/ static int xpvd_add_eventcall(dev_info_t *dip, dev_info_t *rdip, ddi_eventcookie_t cookie, void (*callback)(dev_info_t *dip, ddi_eventcookie_t cookie, void *arg, void *bus_impldata), void *arg, ddi_callback_id_t *cb_id) { return (ndi_event_add_callback(xpvd_ndi_event_handle, rdip, cookie, callback, arg, NDI_SLEEP, cb_id)); } /*ARGSUSED*/ static int xpvd_remove_eventcall(dev_info_t *dip, ddi_callback_id_t cb_id) { return (ndi_event_remove_callback(xpvd_ndi_event_handle, cb_id)); } /*ARGSUSED*/ static int xpvd_post_event(dev_info_t *dip, dev_info_t *rdip, ddi_eventcookie_t cookie, void *bus_impldata) { return (ndi_event_run_callbacks(xpvd_ndi_event_handle, rdip, cookie, bus_impldata)); }