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 28 #include <sys/types.h> 29 #include <sys/conf.h> 30 #include <sys/ddi.h> 31 #include <sys/sunddi.h> 32 #include <sys/ddi_impldefs.h> 33 #include <sys/ddi_subrdefs.h> 34 #include <sys/obpdefs.h> 35 #include <sys/cmn_err.h> 36 #include <sys/errno.h> 37 #include <sys/kmem.h> 38 #include <sys/debug.h> 39 #include <sys/sysmacros.h> 40 #include <sys/autoconf.h> 41 #include <sys/modctl.h> 42 43 /* 44 * module central.c 45 * 46 * This module is a nexus driver designed to support the fhc nexus driver 47 * and all children below it. This driver does not handle any of the 48 * DDI functions passed up to it by the fhc driver, but instead allows 49 * them to bubble up to the root node. A consequence of this is that 50 * the maintainer of this code must watch for changes in the sun4u 51 * rootnexus driver to make sure they do not break this driver or any 52 * of its children. 53 */ 54 55 /* 56 * Function Prototypes 57 */ 58 static int 59 central_attach(dev_info_t *devi, ddi_attach_cmd_t cmd); 60 61 static int 62 central_detach(dev_info_t *devi, ddi_detach_cmd_t cmd); 63 64 /* 65 * Configuration Data Structures 66 */ 67 static struct bus_ops central_bus_ops = { 68 BUSO_REV, 69 ddi_bus_map, /* map */ 70 0, /* get_intrspec */ 71 0, /* add_intrspec */ 72 0, /* remove_intrspec */ 73 i_ddi_map_fault, /* map_fault */ 74 ddi_no_dma_map, /* dma_map */ 75 ddi_no_dma_allochdl, 76 ddi_no_dma_freehdl, 77 ddi_no_dma_bindhdl, 78 ddi_no_dma_unbindhdl, 79 ddi_no_dma_flush, 80 ddi_no_dma_win, 81 ddi_dma_mctl, /* dma_ctl */ 82 ddi_ctlops, /* ctl */ 83 ddi_bus_prop_op, /* prop_op */ 84 0, /* (*bus_get_eventcookie)(); */ 85 0, /* (*bus_add_eventcall)(); */ 86 0, /* (*bus_remove_eventcall)(); */ 87 0, /* (*bus_post_event)(); */ 88 0, /* (*bus_intr_ctl)(); */ 89 0, /* (*bus_config)(); */ 90 0, /* (*bus_unconfig)(); */ 91 0, /* (*bus_fm_init)(); */ 92 0, /* (*bus_fm_fini)(); */ 93 0, /* (*bus_fm_access_enter)(); */ 94 0, /* (*bus_fm_access_exit)(); */ 95 0, /* (*bus_power)(); */ 96 i_ddi_intr_ops /* (*bus_intr_op)(); */ 97 }; 98 99 static struct dev_ops central_ops = { 100 DEVO_REV, /* rev */ 101 0, /* refcnt */ 102 ddi_no_info, /* getinfo */ 103 nulldev, /* identify */ 104 nulldev, /* probe */ 105 central_attach, /* attach */ 106 central_detach, /* detach */ 107 nulldev, /* reset */ 108 (struct cb_ops *)0, /* cb_ops */ 109 ¢ral_bus_ops, /* bus_ops */ 110 nulldev, /* power */ 111 ddi_quiesce_not_needed, /* quiesce */ 112 }; 113 114 extern struct mod_ops mod_driverops; 115 116 static struct modldrv modldrv = { 117 &mod_driverops, /* Type of module. This one is a driver */ 118 "Central Nexus", /* Name of module. */ 119 ¢ral_ops, /* driver ops */ 120 }; 121 122 static struct modlinkage modlinkage = { 123 MODREV_1, /* rev */ 124 (void *)&modldrv, 125 NULL 126 }; 127 128 /* 129 * These are the module initialization routines. 130 */ 131 132 int 133 _init(void) 134 { 135 return (mod_install(&modlinkage)); 136 } 137 138 int 139 _fini(void) 140 { 141 int error; 142 143 if ((error = mod_remove(&modlinkage)) != 0) 144 return (error); 145 146 return (0); 147 } 148 149 int 150 _info(struct modinfo *modinfop) 151 { 152 return (mod_info(&modlinkage, modinfop)); 153 } 154 155 static int 156 central_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 157 { 158 switch (cmd) { 159 case DDI_ATTACH: 160 break; 161 162 case DDI_RESUME: 163 return (DDI_SUCCESS); 164 165 default: 166 return (DDI_FAILURE); 167 } 168 169 /* nothing to suspend/resume here */ 170 (void) ddi_prop_update_string(DDI_DEV_T_NONE, devi, 171 "pm-hardware-state", "no-suspend-resume"); 172 173 ddi_report_dev(devi); 174 return (DDI_SUCCESS); 175 } 176 177 /* ARGSUSED */ 178 static int 179 central_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) 180 { 181 switch (cmd) { 182 case DDI_SUSPEND: 183 case DDI_DETACH: 184 default: 185 return (DDI_FAILURE); 186 } 187 } 188