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 2009 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #include <fm/topo_mod.h> 28 #include <fm/topo_hc.h> 29 #include <libdevinfo.h> 30 #include <strings.h> 31 #include <pcibus.h> 32 #include <hostbridge.h> 33 #include <did.h> 34 #include <util.h> 35 36 static int 37 hb_process(topo_mod_t *mod, tnode_t *ptn, topo_instance_t hbi, di_node_t bn) 38 { 39 tnode_t *hb; 40 did_t *hbdid; 41 42 if ((hbdid = did_create(mod, bn, 0, hbi, NO_RC, TRUST_BDF)) == NULL) 43 return (-1); 44 if ((hb = pcihostbridge_declare(mod, ptn, bn, hbi)) == NULL) 45 return (-1); 46 if (topo_mod_enumerate(mod, 47 hb, PCI_BUS, PCI_BUS, 0, MAX_HB_BUSES, (void *)hbdid) < 0) { 48 topo_node_unbind(hb); 49 return (-1); 50 } 51 52 return (0); 53 } 54 55 static int 56 rc_process(topo_mod_t *mod, tnode_t *ptn, topo_instance_t hbi, di_node_t bn) 57 { 58 tnode_t *hb; 59 tnode_t *rc; 60 did_t *hbdid; 61 62 if ((hbdid = did_create(mod, bn, 0, hbi, hbi, TRUST_BDF)) == NULL) 63 return (-1); 64 if ((hb = pciexhostbridge_declare(mod, ptn, bn, hbi)) == NULL) 65 return (-1); 66 if ((rc = pciexrc_declare(mod, hb, bn, hbi)) == NULL) 67 return (-1); 68 if (topo_mod_enumerate(mod, 69 rc, PCI_BUS, PCIEX_BUS, 0, MAX_HB_BUSES, (void *)hbdid) < 0) { 70 topo_node_unbind(hb); 71 topo_node_unbind(rc); 72 return (-1); 73 } 74 75 return (0); 76 } 77 78 79 int 80 pci_hostbridges_find(topo_mod_t *mod, tnode_t *ptn) 81 { 82 di_node_t devtree; 83 di_node_t pnode, cnode; 84 int hbcnt = 0; 85 86 /* Scan for buses, top-level devinfo nodes with the right driver */ 87 devtree = topo_mod_devinfo(mod); 88 if (devtree == DI_NODE_NIL) { 89 topo_mod_dprintf(mod, "devinfo init failed."); 90 topo_node_range_destroy(ptn, HOSTBRIDGE); 91 return (0); 92 } 93 94 pnode = di_drv_first_node(PCI, devtree); 95 while (pnode != DI_NODE_NIL) { 96 /* 97 * We've seen cases where certain phantom PCI hostbridges have 98 * appeared on systems. If we encounter a host bridge without a 99 * bus address assigned to it, then we should skip processing it 100 * here as that indicates that it generally doesn't have any 101 * devices under it and we'll otherwise blow up in devinfo. 102 */ 103 if (di_bus_addr(pnode) == NULL) { 104 pnode = di_drv_next_node(pnode); 105 continue; 106 } 107 108 if (hb_process(mod, ptn, hbcnt, pnode) < 0) { 109 if (hbcnt == 0) 110 topo_node_range_destroy(ptn, HOSTBRIDGE); 111 return (topo_mod_seterrno(mod, EMOD_PARTIAL_ENUM)); 112 } 113 hbcnt++; 114 pnode = di_drv_next_node(pnode); 115 } 116 117 pnode = di_drv_first_node(NPE, devtree); 118 while (pnode != DI_NODE_NIL) { 119 for (cnode = di_child_node(pnode); cnode != DI_NODE_NIL; 120 cnode = di_sibling_node(cnode)) { 121 if (di_driver_name(cnode) == NULL) 122 continue; 123 if (strcmp(di_driver_name(cnode), PCI_PCI) == 0) { 124 if (hb_process(mod, ptn, hbcnt, cnode) < 0) { 125 if (hbcnt == 0) 126 topo_node_range_destroy(ptn, 127 HOSTBRIDGE); 128 return (topo_mod_seterrno(mod, 129 EMOD_PARTIAL_ENUM)); 130 } 131 hbcnt++; 132 } 133 if (strcmp(di_driver_name(cnode), PCIEB) == 0) { 134 if (rc_process(mod, ptn, hbcnt, cnode) < 0) { 135 if (hbcnt == 0) 136 topo_node_range_destroy(ptn, 137 HOSTBRIDGE); 138 return (topo_mod_seterrno(mod, 139 EMOD_PARTIAL_ENUM)); 140 } 141 hbcnt++; 142 } 143 } 144 pnode = di_drv_next_node(pnode); 145 } 146 return (0); 147 } 148 149 /*ARGSUSED*/ 150 int 151 platform_hb_enum(topo_mod_t *mod, tnode_t *parent, const char *name, 152 topo_instance_t imin, topo_instance_t imax) 153 { 154 return (pci_hostbridges_find(mod, parent)); 155 } 156 157 /*ARGSUSED*/ 158 int 159 platform_hb_label(topo_mod_t *mod, tnode_t *node, nvlist_t *in, nvlist_t **out) 160 { 161 return (labelmethod_inherit(mod, node, in, out)); 162 } 163