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 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <sys/types.h> 28 #include <sys/hypervisor.h> 29 #include <sys/sunndi.h> 30 #include <sys/sunddi.h> 31 #include <sys/ddi_subrdefs.h> 32 #include <sys/bootconf.h> 33 #include <sys/psw.h> 34 #include <sys/modctl.h> 35 #include <sys/errno.h> 36 #include <sys/reboot.h> 37 #include <sys/hypervisor.h> 38 #include <xen/sys/xenbus_comms.h> 39 #include <xen/sys/xenbus_impl.h> 40 #include <xen/sys/xendev.h> 41 42 extern int xen_boot_debug; 43 44 /* 45 * Internal structures and functions 46 */ 47 int xendev_nounload = 0; 48 void xendev_enumerate(int); 49 50 /* 51 * Interface routines 52 */ 53 54 static struct modlmisc modlmisc = { 55 &mod_miscops, "virtual device probe" 56 }; 57 58 static struct modlinkage modlinkage = { 59 MODREV_1, (void *)&modlmisc, NULL 60 }; 61 62 int 63 _init(void) 64 { 65 int err; 66 67 if ((err = mod_install(&modlinkage)) != 0) 68 return (err); 69 70 impl_bus_add_probe(xendev_enumerate); 71 return (0); 72 } 73 74 int 75 _fini(void) 76 { 77 int err; 78 79 if (xendev_nounload) 80 return (EBUSY); 81 82 if ((err = mod_remove(&modlinkage)) != 0) 83 return (err); 84 85 impl_bus_delete_probe(xendev_enumerate); 86 return (0); 87 } 88 89 int 90 _info(struct modinfo *modinfop) 91 { 92 return (mod_info(&modlinkage, modinfop)); 93 } 94 95 96 /* 97 * This functions is invoked twice, first time with reprogram=0 to 98 * set up the xpvd portion of the device tree. The second time is 99 * ignored. 100 */ 101 void 102 xendev_enumerate(int reprogram) 103 { 104 dev_info_t *dip; 105 106 if (reprogram != 0) 107 return; 108 109 ndi_devi_alloc_sleep(ddi_root_node(), "xpvd", 110 (pnode_t)DEVI_SID_NODEID, &dip); 111 112 (void) ndi_devi_bind_driver(dip, 0); 113 114 /* 115 * Too early to enumerate split device drivers in domU 116 * since we need to create taskq thread during enumeration. 117 * So, we only enumerate softdevs and console here. 118 */ 119 xendev_enum_all(dip, B_TRUE); 120 } 121