1 /*-
2 * Copyright (c) 2006 IronPort Systems
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: src/sys/compat/linsysfs/linsysfs.c,v 1.4 2007/03/12 12:16:52 des Exp $");
29
30 #include <sys/param.h>
31 #include <sys/queue.h>
32 #include <sys/blist.h>
33 #include <sys/conf.h>
34 #include <sys/exec.h>
35 #include <sys/filedesc.h>
36 #include <sys/kernel.h>
37 #include <sys/linker.h>
38 #include <sys/malloc.h>
39 #include <sys/mount.h>
40 #include <sys/mutex.h>
41 #include <sys/proc.h>
42 #include <sys/resourcevar.h>
43 #include <sys/sbuf.h>
44 #include <sys/smp.h>
45 #include <sys/socket.h>
46 #include <sys/vnode.h>
47 #include <sys/bus.h>
48 #include <sys/pciio.h>
49
50 #include <dev/pci/pcivar.h>
51 #include <dev/pci/pcireg.h>
52
53 #include <net/if.h>
54
55 #include <vm/vm.h>
56 #include <vm/pmap.h>
57 #include <vm/vm_map.h>
58 #include <vm/vm_param.h>
59 #include <vm/vm_object.h>
60 #include <vm/swap_pager.h>
61
62 #include <machine/bus.h>
63
64 #include "opt_compat.h"
65 #ifdef COMPAT_LINUX32 /* XXX */
66 #include <machine/../linux32/linux.h>
67 #else
68 #include <machine/../linux/linux.h>
69 #endif
70 #include <compat/linux/linux_ioctl.h>
71 #include <compat/linux/linux_mib.h>
72 #include <compat/linux/linux_util.h>
73 #include <fs/pseudofs/pseudofs.h>
74
75 struct scsi_host_queue {
76 TAILQ_ENTRY(scsi_host_queue) scsi_host_next;
77 char *path;
78 char *name;
79 };
80
81 TAILQ_HEAD(,scsi_host_queue) scsi_host_q;
82
83 static int host_number = 0;
84
85 static int
86 atoi(const char *str)
87 {
88 return (int)strtol(str, (char **)NULL, 10);
89 }
90
91 /*
92 * Filler function for proc_name
93 */
94 static int
95 linsysfs_scsiname(PFS_FILL_ARGS)
96 {
97 struct scsi_host_queue *scsi_host;
98 int index;
99
100 if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) {
101 index = atoi(&pn->pn_parent->pn_name[4]);
102 } else {
103 sbuf_printf(sb, "unknown\n");
104 return (0);
105 }
106 TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) {
107 if (index-- == 0) {
108 sbuf_printf(sb, "%s\n", scsi_host->name);
109 return (0);
110 }
111 }
112 sbuf_printf(sb, "unknown\n");
113 return (0);
114 }
115
116 /*
117 * Filler function for device sym-link
118 */
119 static int
120 linsysfs_link_scsi_host(PFS_FILL_ARGS)
121 {
122 struct scsi_host_queue *scsi_host;
123 int index;
124
125 if (strncmp(pn->pn_parent->pn_name, "host", 4) == 0) {
126 index = atoi(&pn->pn_parent->pn_name[4]);
127 } else {
128 sbuf_printf(sb, "unknown\n");
129 return (0);
130 }
131 TAILQ_FOREACH(scsi_host, &scsi_host_q, scsi_host_next) {
132 if (index-- == 0) {
133 sbuf_printf(sb, "../../../devices%s", scsi_host->path);
134 return(0);
135 }
136 }
137 sbuf_printf(sb, "unknown\n");
138 return (0);
139 }
140
141 #define PCI_DEV "pci"
142 static int
143 linsysfs_run_bus(device_t dev, struct pfs_node *dir, struct pfs_node *scsi, char *path,
144 char *prefix)
145 {
146 struct scsi_host_queue *scsi_host;
147 struct pfs_node *sub_dir;
148 int i, nchildren;
149 device_t *children, parent;
150 devclass_t devclass;
151 const char *name = NULL;
152 struct pci_devinfo *dinfo;
153 char *device, *host, *new_path = path;
154
155 parent = device_get_parent(dev);
156 if (parent) {
157 devclass = device_get_devclass(parent);
158 if (devclass != NULL)
159 name = devclass_get_name(devclass);
160 if (name && strcmp(name, PCI_DEV) == 0) {
161 dinfo = device_get_ivars(dev);
162 if (dinfo) {
163 device = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
164 new_path = malloc(MAXPATHLEN, M_TEMP,
165 M_WAITOK);
166 new_path[0] = '\000';
167 strcpy(new_path, path);
168 host = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
169 device[0] = '\000';
170 sprintf(device, "%s:%02x:%02x.%x",
171 prefix,
172 dinfo->cfg.bus,
173 dinfo->cfg.slot,
174 dinfo->cfg.func);
175 strcat(new_path, "/");
176 strcat(new_path, device);
177 dir = pfs_create_dir(dir, device,
178 NULL, NULL, NULL, 0);
179
180 if (dinfo->cfg.baseclass == PCIC_STORAGE) {
181 /* DJA only make this if needed */
182 sprintf(host, "host%d", host_number++);
183 strcat(new_path, "/");
184 strcat(new_path, host);
185 sub_dir = pfs_create_dir(dir,
186 host, NULL, NULL, NULL, 0);
187 scsi_host = malloc(sizeof(
188 struct scsi_host_queue),
189 M_DEVBUF, M_NOWAIT);
190 scsi_host->path = malloc(
191 strlen(new_path) + 1,
192 M_DEVBUF, M_NOWAIT);
193 scsi_host->path[0] = '\000';
194 bcopy(new_path, scsi_host->path,
195 strlen(new_path) + 1);
196 scsi_host->name = "unknown";
197
198 sub_dir = pfs_create_dir(scsi, host,
199 NULL, NULL, NULL, 0);
200 pfs_create_link(sub_dir, "device",
201 &linsysfs_link_scsi_host,
202 NULL, NULL, NULL, 0);
203 pfs_create_file(sub_dir, "proc_name",
204 &linsysfs_scsiname,
205 NULL, NULL, NULL, PFS_RD);
206 scsi_host->name
207 = linux_driver_get_name_dev(dev);
208 TAILQ_INSERT_TAIL(&scsi_host_q,
209 scsi_host, scsi_host_next);
210 }
211 free(device, M_TEMP);
212 free(host, M_TEMP);
213 }
214 }
215 }
216
217 device_get_children(dev, &children, &nchildren);
218 for (i = 0; i < nchildren; i++) {
219 if (children[i])
220 linsysfs_run_bus(children[i], dir, scsi, new_path, prefix);
221 }
222 if (new_path != path)
223 free(new_path, M_TEMP);
224
225 return (1);
226 }
227
228 /*
229 * Constructor
230 */
231 static int
232 linsysfs_init(PFS_INIT_ARGS)
233 {
234 struct pfs_node *root;
235 struct pfs_node *dir;
236 struct pfs_node *pci;
237 struct pfs_node *scsi;
238 devclass_t devclass;
239 device_t dev;
240
241 TAILQ_INIT(&scsi_host_q);
242
243 root = pi->pi_root;
244
245 /* /sys/class/... */
246 scsi = pfs_create_dir(root, "class", NULL, NULL, NULL, 0);
247 scsi = pfs_create_dir(scsi, "scsi_host", NULL, NULL, NULL, 0);
248
249 /* /sys/device */
250 dir = pfs_create_dir(root, "devices", NULL, NULL, NULL, 0);
251
252 /* /sys/device/pci0000:00 */
253 pci = pfs_create_dir(dir, "pci0000:00", NULL, NULL, NULL, 0);
254
255 devclass = devclass_find("root");
256 if (devclass == NULL) {
257 return (0);
258 }
259
260 dev = devclass_get_device(devclass, 0);
261 linsysfs_run_bus(dev, pci, scsi, "/pci0000:00", "0000");
262 return (0);
263 }
264
265 /*
266 * Destructor
267 */
268 static int
269 linsysfs_uninit(PFS_INIT_ARGS)
270 {
271 struct scsi_host_queue *scsi_host, *scsi_host_tmp;
272
273 TAILQ_FOREACH_SAFE(scsi_host, &scsi_host_q, scsi_host_next,
274 scsi_host_tmp) {
275 TAILQ_REMOVE(&scsi_host_q, scsi_host, scsi_host_next);
276 free(scsi_host->path, M_TEMP);
277 free(scsi_host, M_TEMP);
278 }
279
280 return (0);
281 }
282
283 PSEUDOFS(linsysfs, 1);
284 MODULE_DEPEND(linsysfs, linux, 1, 1, 1);
285 Cache object: f60f3272b57e12df1edecf69c5164d4d
|