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
hb_process(topo_mod_t * mod,tnode_t * ptn,topo_instance_t hbi,di_node_t bn)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
rc_process(topo_mod_t * mod,tnode_t * ptn,topo_instance_t hbi,di_node_t bn)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
pci_hostbridges_find(topo_mod_t * mod,tnode_t * ptn)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
platform_hb_enum(topo_mod_t * mod,tnode_t * parent,const char * name,topo_instance_t imin,topo_instance_t imax)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
platform_hb_label(topo_mod_t * mod,tnode_t * node,nvlist_t * in,nvlist_t ** out)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