1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/types.h> 30 #include <sys/hypervisor.h> 31 #include <sys/sunndi.h> 32 #include <sys/sunddi.h> 33 #include <sys/ddi_subrdefs.h> 34 #include <sys/bootconf.h> 35 #include <sys/psw.h> 36 #include <sys/modctl.h> 37 #include <sys/errno.h> 38 #include <sys/reboot.h> 39 #include <sys/hypervisor.h> 40 #include <xen/sys/xenbus_comms.h> 41 #include <xen/sys/xenbus_impl.h> 42 #include <xen/sys/xendev.h> 43 44 extern int xen_boot_debug; 45 46 /* 47 * Internal structures and functions 48 */ 49 int xendev_nounload = 0; 50 void xendev_enumerate(int); 51 52 /* 53 * Interface routines 54 */ 55 56 static struct modlmisc modlmisc = { 57 &mod_miscops, "virtual device probe %I%" 58 }; 59 60 static struct modlinkage modlinkage = { 61 MODREV_1, (void *)&modlmisc, NULL 62 }; 63 64 int 65 _init(void) 66 { 67 int err; 68 69 if ((err = mod_install(&modlinkage)) != 0) 70 return (err); 71 72 impl_bus_add_probe(xendev_enumerate); 73 return (0); 74 } 75 76 int 77 _fini(void) 78 { 79 int err; 80 81 if (xendev_nounload) 82 return (EBUSY); 83 84 if ((err = mod_remove(&modlinkage)) != 0) 85 return (err); 86 87 impl_bus_delete_probe(xendev_enumerate); 88 return (0); 89 } 90 91 int 92 _info(struct modinfo *modinfop) 93 { 94 return (mod_info(&modlinkage, modinfop)); 95 } 96 97 98 /* 99 * This functions is invoked twice, first time with reprogram=0 to 100 * set up the xpvd portion of the device tree. The second time is 101 * ignored. 102 */ 103 void 104 xendev_enumerate(int reprogram) 105 { 106 dev_info_t *dip; 107 108 if (reprogram != 0) 109 return; 110 111 ndi_devi_alloc_sleep(ddi_root_node(), "xpvd", 112 (pnode_t)DEVI_SID_NODEID, &dip); 113 114 (void) ndi_devi_bind_driver(dip, 0); 115 116 /* 117 * Too early to enumerate split device drivers in domU 118 * since we need to create taskq thread during enumeration. 119 * So, we only enumerate softdevs and console here. 120 */ 121 xendev_enum_all(dip, B_TRUE); 122 } 123