Bug Summary

File:dev/pci/pci_user.c
Warning:line 837, column 19
Copies out a struct with uncleared padding (>= 7 bytes)

Annotated Source Code

1/*-
2 * Copyright (c) 1997, Stefan Esser <[email protected]>
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 unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: releng/11.0/sys/dev/pci/pci_user.c 295816 2016-02-19 16:53:21Z se $")__asm__(".ident\t\"" "$FreeBSD: releng/11.0/sys/dev/pci/pci_user.c 295816 2016-02-19 16:53:21Z se $"
"\"")
;
29
30#include "opt_bus.h" /* XXX trim includes */
31#include "opt_compat.h"
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/malloc.h>
36#include <sys/module.h>
37#include <sys/linker.h>
38#include <sys/fcntl.h>
39#include <sys/conf.h>
40#include <sys/kernel.h>
41#include <sys/proc.h>
42#include <sys/queue.h>
43#include <sys/types.h>
44
45#include <vm/vm.h>
46#include <vm/pmap.h>
47#include <vm/vm_extern.h>
48
49#include <sys/bus.h>
50#include <machine/bus.h>
51#include <sys/rman.h>
52#include <machine/resource.h>
53
54#include <sys/pciio.h>
55#include <dev/pci/pcireg.h>
56#include <dev/pci/pcivar.h>
57
58#include "pcib_if.h"
59#include "pci_if.h"
60
61/*
62 * This is the user interface to PCI configuration space.
63 */
64
65static d_open_t pci_open;
66static d_close_t pci_close;
67static int pci_conf_match(struct pci_match_conf *matches, int num_matches,
68 struct pci_conf *match_buf);
69static d_ioctl_t pci_ioctl;
70
71struct cdevsw pcicdev = {
72 .d_version = D_VERSION0x17122009,
73 .d_flags = D_NEEDGIANT0x00400000,
74 .d_open = pci_open,
75 .d_close = pci_close,
76 .d_ioctl = pci_ioctl,
77 .d_name = "pci",
78};
79
80static int
81pci_open(struct cdev *dev, int oflags, int devtype, struct thread *td)
82{
83 int error;
84
85 if (oflags & FWRITE0x0002) {
86 error = securelevel_gt(td->td_ucred, 0);
87 if (error)
88 return (error);
89 }
90
91 return (0);
92}
93
94static int
95pci_close(struct cdev *dev, int flag, int devtype, struct thread *td)
96{
97 return 0;
98}
99
100/*
101 * Match a single pci_conf structure against an array of pci_match_conf
102 * structures. The first argument, 'matches', is an array of num_matches
103 * pci_match_conf structures. match_buf is a pointer to the pci_conf
104 * structure that will be compared to every entry in the matches array.
105 * This function returns 1 on failure, 0 on success.
106 */
107static int
108pci_conf_match(struct pci_match_conf *matches, int num_matches,
109 struct pci_conf *match_buf)
110{
111 int i;
112
113 if ((matches == NULL((void *)0)) || (match_buf == NULL((void *)0)) || (num_matches <= 0))
114 return(1);
115
116 for (i = 0; i < num_matches; i++) {
117 /*
118 * I'm not sure why someone would do this...but...
119 */
120 if (matches[i].flags == PCI_GETCONF_NO_MATCH)
121 continue;
122
123 /*
124 * Look at each of the match flags. If it's set, do the
125 * comparison. If the comparison fails, we don't have a
126 * match, go on to the next item if there is one.
127 */
128 if (((matches[i].flags & PCI_GETCONF_MATCH_DOMAIN) != 0)
129 && (match_buf->pc_sel.pc_domain !=
130 matches[i].pc_sel.pc_domain))
131 continue;
132
133 if (((matches[i].flags & PCI_GETCONF_MATCH_BUS) != 0)
134 && (match_buf->pc_sel.pc_bus != matches[i].pc_sel.pc_bus))
135 continue;
136
137 if (((matches[i].flags & PCI_GETCONF_MATCH_DEV) != 0)
138 && (match_buf->pc_sel.pc_dev != matches[i].pc_sel.pc_dev))
139 continue;
140
141 if (((matches[i].flags & PCI_GETCONF_MATCH_FUNC) != 0)
142 && (match_buf->pc_sel.pc_func != matches[i].pc_sel.pc_func))
143 continue;
144
145 if (((matches[i].flags & PCI_GETCONF_MATCH_VENDOR) != 0)
146 && (match_buf->pc_vendor != matches[i].pc_vendor))
147 continue;
148
149 if (((matches[i].flags & PCI_GETCONF_MATCH_DEVICE) != 0)
150 && (match_buf->pc_device != matches[i].pc_device))
151 continue;
152
153 if (((matches[i].flags & PCI_GETCONF_MATCH_CLASS) != 0)
154 && (match_buf->pc_class != matches[i].pc_class))
155 continue;
156
157 if (((matches[i].flags & PCI_GETCONF_MATCH_UNIT) != 0)
158 && (match_buf->pd_unit != matches[i].pd_unit))
159 continue;
160
161 if (((matches[i].flags & PCI_GETCONF_MATCH_NAME) != 0)
162 && (strncmp(matches[i].pd_name, match_buf->pd_name,
163 sizeof(match_buf->pd_name)) != 0))
164 continue;
165
166 return(0);
167 }
168
169 return(1);
170}
171
172#if defined(COMPAT_FREEBSD41) || defined(COMPAT_FREEBSD51) || \
173 defined(COMPAT_FREEBSD61)
174#define PRE7_COMPAT
175
176typedef enum {
177 PCI_GETCONF_NO_MATCH_OLD = 0x00,
178 PCI_GETCONF_MATCH_BUS_OLD = 0x01,
179 PCI_GETCONF_MATCH_DEV_OLD = 0x02,
180 PCI_GETCONF_MATCH_FUNC_OLD = 0x04,
181 PCI_GETCONF_MATCH_NAME_OLD = 0x08,
182 PCI_GETCONF_MATCH_UNIT_OLD = 0x10,
183 PCI_GETCONF_MATCH_VENDOR_OLD = 0x20,
184 PCI_GETCONF_MATCH_DEVICE_OLD = 0x40,
185 PCI_GETCONF_MATCH_CLASS_OLD = 0x80
186} pci_getconf_flags_old;
187
188struct pcisel_old {
189 u_int8_t pc_bus; /* bus number */
190 u_int8_t pc_dev; /* device on this bus */
191 u_int8_t pc_func; /* function on this device */
192};
193
194struct pci_conf_old {
195 struct pcisel_old pc_sel; /* bus+slot+function */
196 u_int8_t pc_hdr; /* PCI header type */
197 u_int16_t pc_subvendor; /* card vendor ID */
198 u_int16_t pc_subdevice; /* card device ID, assigned by
199 card vendor */
200 u_int16_t pc_vendor; /* chip vendor ID */
201 u_int16_t pc_device; /* chip device ID, assigned by
202 chip vendor */
203 u_int8_t pc_class; /* chip PCI class */
204 u_int8_t pc_subclass; /* chip PCI subclass */
205 u_int8_t pc_progif; /* chip PCI programming interface */
206 u_int8_t pc_revid; /* chip revision ID */
207 char pd_name[PCI_MAXNAMELEN16 + 1]; /* device name */
208 u_long pd_unit; /* device unit number */
209};
210
211struct pci_match_conf_old {
212 struct pcisel_old pc_sel; /* bus+slot+function */
213 char pd_name[PCI_MAXNAMELEN16 + 1]; /* device name */
214 u_long pd_unit; /* Unit number */
215 u_int16_t pc_vendor; /* PCI Vendor ID */
216 u_int16_t pc_device; /* PCI Device ID */
217 u_int8_t pc_class; /* PCI class */
218 pci_getconf_flags_old flags; /* Matching expression */
219};
220
221struct pci_io_old {
222 struct pcisel_old pi_sel; /* device to operate on */
223 int pi_reg; /* configuration register to examine */
224 int pi_width; /* width (in bytes) of read or write */
225 u_int32_t pi_data; /* data to write or result of read */
226};
227
228#ifdef COMPAT_FREEBSD321
229struct pci_conf_old32 {
230 struct pcisel_old pc_sel; /* bus+slot+function */
231 uint8_t pc_hdr; /* PCI header type */
232 uint16_t pc_subvendor; /* card vendor ID */
233 uint16_t pc_subdevice; /* card device ID, assigned by
234 card vendor */
235 uint16_t pc_vendor; /* chip vendor ID */
236 uint16_t pc_device; /* chip device ID, assigned by
237 chip vendor */
238 uint8_t pc_class; /* chip PCI class */
239 uint8_t pc_subclass; /* chip PCI subclass */
240 uint8_t pc_progif; /* chip PCI programming interface */
241 uint8_t pc_revid; /* chip revision ID */
242 char pd_name[PCI_MAXNAMELEN16 + 1]; /* device name */
243 uint32_t pd_unit; /* device unit number (u_long) */
244};
245
246struct pci_match_conf_old32 {
247 struct pcisel_old pc_sel; /* bus+slot+function */
248 char pd_name[PCI_MAXNAMELEN16 + 1]; /* device name */
249 uint32_t pd_unit; /* Unit number (u_long) */
250 uint16_t pc_vendor; /* PCI Vendor ID */
251 uint16_t pc_device; /* PCI Device ID */
252 uint8_t pc_class; /* PCI class */
253 pci_getconf_flags_old flags; /* Matching expression */
254};
255
256struct pci_conf_io32 {
257 uint32_t pat_buf_len; /* pattern buffer length */
258 uint32_t num_patterns; /* number of patterns */
259 uint32_t patterns; /* pattern buffer
260 (struct pci_match_conf_old32 *) */
261 uint32_t match_buf_len; /* match buffer length */
262 uint32_t num_matches; /* number of matches returned */
263 uint32_t matches; /* match buffer
264 (struct pci_conf_old32 *) */
265 uint32_t offset; /* offset into device list */
266 uint32_t generation; /* device list generation */
267 pci_getconf_status status; /* request status */
268};
269
270#define PCIOCGETCONF_OLD32((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
_IOWR('p', 1, struct pci_conf_io32)((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
271#endif /* COMPAT_FREEBSD32 */
272
273#define PCIOCGETCONF_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((1))))
_IOWR('p', 1, struct pci_conf_io)((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((1))))
274#define PCIOCREAD_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io_old)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((2))))
_IOWR('p', 2, struct pci_io_old)((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io_old)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((2))))
275#define PCIOCWRITE_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io_old)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((3))))
_IOWR('p', 3, struct pci_io_old)((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io_old)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((3))))
276
277static int pci_conf_match_old(struct pci_match_conf_old *matches,
278 int num_matches, struct pci_conf *match_buf);
279
280static int
281pci_conf_match_old(struct pci_match_conf_old *matches, int num_matches,
282 struct pci_conf *match_buf)
283{
284 int i;
285
286 if ((matches == NULL((void *)0)) || (match_buf == NULL((void *)0)) || (num_matches <= 0))
287 return(1);
288
289 for (i = 0; i < num_matches; i++) {
290 if (match_buf->pc_sel.pc_domain != 0)
291 continue;
292
293 /*
294 * I'm not sure why someone would do this...but...
295 */
296 if (matches[i].flags == PCI_GETCONF_NO_MATCH_OLD)
297 continue;
298
299 /*
300 * Look at each of the match flags. If it's set, do the
301 * comparison. If the comparison fails, we don't have a
302 * match, go on to the next item if there is one.
303 */
304 if (((matches[i].flags & PCI_GETCONF_MATCH_BUS_OLD) != 0)
305 && (match_buf->pc_sel.pc_bus != matches[i].pc_sel.pc_bus))
306 continue;
307
308 if (((matches[i].flags & PCI_GETCONF_MATCH_DEV_OLD) != 0)
309 && (match_buf->pc_sel.pc_dev != matches[i].pc_sel.pc_dev))
310 continue;
311
312 if (((matches[i].flags & PCI_GETCONF_MATCH_FUNC_OLD) != 0)
313 && (match_buf->pc_sel.pc_func != matches[i].pc_sel.pc_func))
314 continue;
315
316 if (((matches[i].flags & PCI_GETCONF_MATCH_VENDOR_OLD) != 0)
317 && (match_buf->pc_vendor != matches[i].pc_vendor))
318 continue;
319
320 if (((matches[i].flags & PCI_GETCONF_MATCH_DEVICE_OLD) != 0)
321 && (match_buf->pc_device != matches[i].pc_device))
322 continue;
323
324 if (((matches[i].flags & PCI_GETCONF_MATCH_CLASS_OLD) != 0)
325 && (match_buf->pc_class != matches[i].pc_class))
326 continue;
327
328 if (((matches[i].flags & PCI_GETCONF_MATCH_UNIT_OLD) != 0)
329 && (match_buf->pd_unit != matches[i].pd_unit))
330 continue;
331
332 if (((matches[i].flags & PCI_GETCONF_MATCH_NAME_OLD) != 0)
333 && (strncmp(matches[i].pd_name, match_buf->pd_name,
334 sizeof(match_buf->pd_name)) != 0))
335 continue;
336
337 return(0);
338 }
339
340 return(1);
341}
342
343#ifdef COMPAT_FREEBSD321
344static int
345pci_conf_match_old32(struct pci_match_conf_old32 *matches, int num_matches,
346 struct pci_conf *match_buf)
347{
348 int i;
349
350 if ((matches == NULL((void *)0)) || (match_buf == NULL((void *)0)) || (num_matches <= 0))
351 return(1);
352
353 for (i = 0; i < num_matches; i++) {
354 if (match_buf->pc_sel.pc_domain != 0)
355 continue;
356
357 /*
358 * I'm not sure why someone would do this...but...
359 */
360 if (matches[i].flags == PCI_GETCONF_NO_MATCH_OLD)
361 continue;
362
363 /*
364 * Look at each of the match flags. If it's set, do the
365 * comparison. If the comparison fails, we don't have a
366 * match, go on to the next item if there is one.
367 */
368 if (((matches[i].flags & PCI_GETCONF_MATCH_BUS_OLD) != 0) &&
369 (match_buf->pc_sel.pc_bus != matches[i].pc_sel.pc_bus))
370 continue;
371
372 if (((matches[i].flags & PCI_GETCONF_MATCH_DEV_OLD) != 0) &&
373 (match_buf->pc_sel.pc_dev != matches[i].pc_sel.pc_dev))
374 continue;
375
376 if (((matches[i].flags & PCI_GETCONF_MATCH_FUNC_OLD) != 0) &&
377 (match_buf->pc_sel.pc_func != matches[i].pc_sel.pc_func))
378 continue;
379
380 if (((matches[i].flags & PCI_GETCONF_MATCH_VENDOR_OLD) != 0) &&
381 (match_buf->pc_vendor != matches[i].pc_vendor))
382 continue;
383
384 if (((matches[i].flags & PCI_GETCONF_MATCH_DEVICE_OLD) != 0) &&
385 (match_buf->pc_device != matches[i].pc_device))
386 continue;
387
388 if (((matches[i].flags & PCI_GETCONF_MATCH_CLASS_OLD) != 0) &&
389 (match_buf->pc_class != matches[i].pc_class))
390 continue;
391
392 if (((matches[i].flags & PCI_GETCONF_MATCH_UNIT_OLD) != 0) &&
393 ((u_int32_t)match_buf->pd_unit != matches[i].pd_unit))
394 continue;
395
396 if (((matches[i].flags & PCI_GETCONF_MATCH_NAME_OLD) != 0) &&
397 (strncmp(matches[i].pd_name, match_buf->pd_name,
398 sizeof(match_buf->pd_name)) != 0))
399 continue;
400
401 return (0);
402 }
403
404 return (1);
405}
406#endif /* COMPAT_FREEBSD32 */
407#endif /* PRE7_COMPAT */
408
409static int
410pci_list_vpd(device_t dev, struct pci_list_vpd_io *lvio)
411{
412 struct pci_vpd_element vpd_element, *vpd_user;
413 struct pcicfg_vpd *vpd;
414 size_t len;
415 int error, i;
416
417 vpd = pci_fetch_vpd_list(dev);
418 if (vpd->vpd_reg == 0 || vpd->vpd_ident == NULL((void *)0))
419 return (ENXIO6);
420
421 /*
422 * Calculate the amount of space needed in the data buffer. An
423 * identifier element is always present followed by the read-only
424 * and read-write keywords.
425 */
426 len = sizeof(struct pci_vpd_element) + strlen(vpd->vpd_ident);
427 for (i = 0; i < vpd->vpd_rocnt; i++)
428 len += sizeof(struct pci_vpd_element) + vpd->vpd_ros[i].len;
429 for (i = 0; i < vpd->vpd_wcnt; i++)
430 len += sizeof(struct pci_vpd_element) + vpd->vpd_w[i].len;
431
432 if (lvio->plvi_len == 0) {
433 lvio->plvi_len = len;
434 return (0);
435 }
436 if (lvio->plvi_len < len) {
437 lvio->plvi_len = len;
438 return (ENOMEM12);
439 }
440
441 /*
442 * Copyout the identifier string followed by each keyword and
443 * value.
444 */
445 vpd_user = lvio->plvi_data;
446 vpd_element.pve_keyword[0] = '\0';
447 vpd_element.pve_keyword[1] = '\0';
448 vpd_element.pve_flags = PVE_FLAG_IDENT0x01;
449 vpd_element.pve_datalen = strlen(vpd->vpd_ident);
450 error = copyout(&vpd_element, vpd_user, sizeof(vpd_element));
451 if (error)
452 return (error);
453 error = copyout(vpd->vpd_ident, vpd_user->pve_data,
454 strlen(vpd->vpd_ident));
455 if (error)
456 return (error);
457 vpd_user = PVE_NEXT(vpd_user)((struct pci_vpd_element *)((char *)(vpd_user) + sizeof(struct
pci_vpd_element) + (vpd_user)->pve_datalen))
;
458 vpd_element.pve_flags = 0;
459 for (i = 0; i < vpd->vpd_rocnt; i++) {
460 vpd_element.pve_keyword[0] = vpd->vpd_ros[i].keyword[0];
461 vpd_element.pve_keyword[1] = vpd->vpd_ros[i].keyword[1];
462 vpd_element.pve_datalen = vpd->vpd_ros[i].len;
463 error = copyout(&vpd_element, vpd_user, sizeof(vpd_element));
464 if (error)
465 return (error);
466 error = copyout(vpd->vpd_ros[i].value, vpd_user->pve_data,
467 vpd->vpd_ros[i].len);
468 if (error)
469 return (error);
470 vpd_user = PVE_NEXT(vpd_user)((struct pci_vpd_element *)((char *)(vpd_user) + sizeof(struct
pci_vpd_element) + (vpd_user)->pve_datalen))
;
471 }
472 vpd_element.pve_flags = PVE_FLAG_RW0x02;
473 for (i = 0; i < vpd->vpd_wcnt; i++) {
474 vpd_element.pve_keyword[0] = vpd->vpd_w[i].keyword[0];
475 vpd_element.pve_keyword[1] = vpd->vpd_w[i].keyword[1];
476 vpd_element.pve_datalen = vpd->vpd_w[i].len;
477 error = copyout(&vpd_element, vpd_user, sizeof(vpd_element));
478 if (error)
479 return (error);
480 error = copyout(vpd->vpd_w[i].value, vpd_user->pve_data,
481 vpd->vpd_w[i].len);
482 if (error)
483 return (error);
484 vpd_user = PVE_NEXT(vpd_user)((struct pci_vpd_element *)((char *)(vpd_user) + sizeof(struct
pci_vpd_element) + (vpd_user)->pve_datalen))
;
485 }
486 KASSERT((char *)vpd_user - (char *)lvio->plvi_data == len,do { } while (0)
487 ("length mismatch"))do { } while (0);
488 lvio->plvi_len = len;
489 return (0);
490}
491
492static int
493pci_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int flag, struct thread *td)
494{
495 device_t pcidev;
496 void *confdata;
497 const char *name;
498 struct devlist *devlist_head;
499 struct pci_conf_io *cio = NULL((void *)0);
500 struct pci_devinfo *dinfo;
501 struct pci_io *io;
502 struct pci_bar_io *bio;
503 struct pci_list_vpd_io *lvio;
504 struct pci_match_conf *pattern_buf;
505 struct pci_map *pm;
506 size_t confsz, iolen, pbufsz;
507 int error, ionum, i, num_patterns;
508#ifdef PRE7_COMPAT
509#ifdef COMPAT_FREEBSD321
510 struct pci_conf_io32 *cio32 = NULL((void *)0);
511 struct pci_conf_old32 conf_old32;
512 struct pci_match_conf_old32 *pattern_buf_old32 = NULL((void *)0);
513#endif
514 struct pci_conf_old conf_old;
515 struct pci_io iodata;
516 struct pci_io_old *io_old;
517 struct pci_match_conf_old *pattern_buf_old = NULL((void *)0);
518
519 io_old = NULL((void *)0);
520#endif
521
522 if (!(flag & FWRITE0x0002)) {
1
Taking false branch
523 switch (cmd) {
524#ifdef PRE7_COMPAT
525#ifdef COMPAT_FREEBSD321
526 case PCIOCGETCONF_OLD32((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
:
527#endif
528 case PCIOCGETCONF_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((1))))
:
529#endif
530 case PCIOCGETCONF((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((5))))
:
531 case PCIOCGETBAR((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_bar_io)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((6))))
:
532 case PCIOCLISTVPD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_list_vpd_io)) & ((1 << 13) - 1)) << 16) |
((('p')) << 8) | ((7))))
:
533 break;
534 default:
535 return (EPERM1);
536 }
537 }
538
539 switch (cmd) {
2
Control jumps to 'case 3224399873:' at line 557
540#ifdef PRE7_COMPAT
541#ifdef COMPAT_FREEBSD321
542 case PCIOCGETCONF_OLD32((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
:
543 cio32 = (struct pci_conf_io32 *)data;
544 cio = malloc(sizeof(struct pci_conf_io), M_TEMP, M_WAITOK0x0002);
545 cio->pat_buf_len = cio32->pat_buf_len;
546 cio->num_patterns = cio32->num_patterns;
547 cio->patterns = (void *)(uintptr_t)cio32->patterns;
548 cio->match_buf_len = cio32->match_buf_len;
549 cio->num_matches = cio32->num_matches;
550 cio->matches = (void *)(uintptr_t)cio32->matches;
551 cio->offset = cio32->offset;
552 cio->generation = cio32->generation;
553 cio->status = cio32->status;
554 cio32->num_matches = 0;
555 break;
556#endif
557 case PCIOCGETCONF_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((1))))
:
558#endif
559 case PCIOCGETCONF((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((5))))
:
560 cio = (struct pci_conf_io *)data;
561 }
562
563 switch (cmd) {
3
Control jumps to 'case 3224399873:' at line 568
564#ifdef PRE7_COMPAT
565#ifdef COMPAT_FREEBSD321
566 case PCIOCGETCONF_OLD32((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
:
567#endif
568 case PCIOCGETCONF_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((1))))
:
569#endif
570 case PCIOCGETCONF((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((5))))
:
571
572 pattern_buf = NULL((void *)0);
573 num_patterns = 0;
574 dinfo = NULL((void *)0);
575
576 cio->num_matches = 0;
577
578 /*
579 * If the user specified an offset into the device list,
580 * but the list has changed since they last called this
581 * ioctl, tell them that the list has changed. They will
582 * have to get the list from the beginning.
583 */
584 if ((cio->offset != 0)
585 && (cio->generation != pci_generation)){
586 cio->status = PCI_GETCONF_LIST_CHANGED;
587 error = 0;
588 goto getconfexit;
589 }
590
591 /*
592 * Check to see whether the user has asked for an offset
593 * past the end of our list.
594 */
595 if (cio->offset >= pci_numdevs) {
4
Taking false branch
596 cio->status = PCI_GETCONF_LAST_DEVICE;
597 error = 0;
598 goto getconfexit;
599 }
600
601 /* get the head of the device queue */
602 devlist_head = &pci_devq;
603
604 /*
605 * Determine how much room we have for pci_conf structures.
606 * Round the user's buffer size down to the nearest
607 * multiple of sizeof(struct pci_conf) in case the user
608 * didn't specify a multiple of that size.
609 */
610#ifdef PRE7_COMPAT
611#ifdef COMPAT_FREEBSD321
612 if (cmd == PCIOCGETCONF_OLD32((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
)
5
Taking false branch
613 confsz = sizeof(struct pci_conf_old32);
614 else
615#endif
616 if (cmd == PCIOCGETCONF_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((1))))
)
6
Taking true branch
617 confsz = sizeof(struct pci_conf_old);
618 else
619#endif
620 confsz = sizeof(struct pci_conf);
621 iolen = min(cio->match_buf_len - (cio->match_buf_len % confsz),
622 pci_numdevs * confsz);
623
624 /*
625 * Since we know that iolen is a multiple of the size of
626 * the pciconf union, it's okay to do this.
627 */
628 ionum = iolen / confsz;
629
630 /*
631 * If this test is true, the user wants the pci_conf
632 * structures returned to match the supplied entries.
633 */
634 if ((cio->num_patterns > 0) && (cio->num_patterns < pci_numdevs)
635 && (cio->pat_buf_len > 0)) {
636 /*
637 * pat_buf_len needs to be:
638 * num_patterns * sizeof(struct pci_match_conf)
639 * While it is certainly possible the user just
640 * allocated a large buffer, but set the number of
641 * matches correctly, it is far more likely that
642 * their kernel doesn't match the userland utility
643 * they're using. It's also possible that the user
644 * forgot to initialize some variables. Yes, this
645 * may be overly picky, but I hazard to guess that
646 * it's far more likely to just catch folks that
647 * updated their kernel but not their userland.
648 */
649#ifdef PRE7_COMPAT
650#ifdef COMPAT_FREEBSD321
651 if (cmd == PCIOCGETCONF_OLD32((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
)
652 pbufsz = sizeof(struct pci_match_conf_old32);
653 else
654#endif
655 if (cmd == PCIOCGETCONF_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((1))))
)
656 pbufsz = sizeof(struct pci_match_conf_old);
657 else
658#endif
659 pbufsz = sizeof(struct pci_match_conf);
660 if (cio->num_patterns * pbufsz != cio->pat_buf_len) {
661 /* The user made a mistake, return an error. */
662 cio->status = PCI_GETCONF_ERROR;
663 error = EINVAL22;
664 goto getconfexit;
665 }
666
667 /*
668 * Allocate a buffer to hold the patterns.
669 */
670#ifdef PRE7_COMPAT
671#ifdef COMPAT_FREEBSD321
672 if (cmd == PCIOCGETCONF_OLD32((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
) {
673 pattern_buf_old32 = malloc(cio->pat_buf_len,
674 M_TEMP, M_WAITOK0x0002);
675 error = copyin(cio->patterns,
676 pattern_buf_old32, cio->pat_buf_len);
677 } else
678#endif /* COMPAT_FREEBSD32 */
679 if (cmd == PCIOCGETCONF_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((1))))
) {
680 pattern_buf_old = malloc(cio->pat_buf_len,
681 M_TEMP, M_WAITOK0x0002);
682 error = copyin(cio->patterns,
683 pattern_buf_old, cio->pat_buf_len);
684 } else
685#endif /* PRE7_COMPAT */
686 {
687 pattern_buf = malloc(cio->pat_buf_len, M_TEMP,
688 M_WAITOK0x0002);
689 error = copyin(cio->patterns, pattern_buf,
690 cio->pat_buf_len);
691 }
692 if (error != 0) {
693 error = EINVAL22;
694 goto getconfexit;
695 }
696 num_patterns = cio->num_patterns;
697 } else if ((cio->num_patterns > 0)
7
Taking false branch
698 || (cio->pat_buf_len > 0)) {
699 /*
700 * The user made a mistake, spit out an error.
701 */
702 cio->status = PCI_GETCONF_ERROR;
703 error = EINVAL22;
704 goto getconfexit;
705 }
706
707 /*
708 * Go through the list of devices and copy out the devices
709 * that match the user's criteria.
710 */
711 for (cio->num_matches = 0, error = 0, i = 0,
9
Loop condition is true. Entering loop body
712 dinfo = STAILQ_FIRST(devlist_head)((devlist_head)->stqh_first);
713 (dinfo != NULL((void *)0)) && (cio->num_matches < ionum) &&
8
Assuming 'dinfo' is not equal to null
714 (error == 0) && (i < pci_numdevs);
715 dinfo = STAILQ_NEXT(dinfo, pci_links)((dinfo)->pci_links.stqe_next), i++) {
716
717 if (i < cio->offset)
10
Taking false branch
718 continue;
719
720 /* Populate pd_name and pd_unit */
721 name = NULL((void *)0);
722 if (dinfo->cfg.dev)
11
Taking false branch
723 name = device_get_name(dinfo->cfg.dev);
724 if (name) {
12
Taking false branch
725 strncpy(dinfo->conf.pd_name, name,
726 sizeof(dinfo->conf.pd_name));
727 dinfo->conf.pd_name[PCI_MAXNAMELEN16] = 0;
728 dinfo->conf.pd_unit =
729 device_get_unit(dinfo->cfg.dev);
730 } else {
731 dinfo->conf.pd_name[0] = '\0';
732 dinfo->conf.pd_unit = 0;
733 }
734
735#ifdef PRE7_COMPAT
736 if (
737#ifdef COMPAT_FREEBSD321
738 (cmd == PCIOCGETCONF_OLD32((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
&&
739 (pattern_buf_old32 == NULL((void *)0) ||
740 pci_conf_match_old32(pattern_buf_old32,
741 num_patterns, &dinfo->conf) == 0)) ||
742#endif
743 (cmd == PCIOCGETCONF_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((1))))
&&
744 (pattern_buf_old == NULL((void *)0) ||
745 pci_conf_match_old(pattern_buf_old, num_patterns,
746 &dinfo->conf) == 0)) ||
747 (cmd == PCIOCGETCONF((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((5))))
&&
748 (pattern_buf == NULL((void *)0) ||
749 pci_conf_match(pattern_buf, num_patterns,
750 &dinfo->conf) == 0))) {
751#else
752 if (pattern_buf == NULL((void *)0) ||
753 pci_conf_match(pattern_buf, num_patterns,
754 &dinfo->conf) == 0) {
755#endif
756 /*
757 * If we've filled up the user's buffer,
758 * break out at this point. Since we've
759 * got a match here, we'll pick right back
760 * up at the matching entry. We can also
761 * tell the user that there are more matches
762 * left.
763 */
764 if (cio->num_matches >= ionum)
13
Taking false branch
765 break;
766
767#ifdef PRE7_COMPAT
768#ifdef COMPAT_FREEBSD321
769 if (cmd == PCIOCGETCONF_OLD32((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
) {
14
Taking false branch
770 conf_old32.pc_sel.pc_bus =
771 dinfo->conf.pc_sel.pc_bus;
772 conf_old32.pc_sel.pc_dev =
773 dinfo->conf.pc_sel.pc_dev;
774 conf_old32.pc_sel.pc_func =
775 dinfo->conf.pc_sel.pc_func;
776 conf_old32.pc_hdr = dinfo->conf.pc_hdr;
777 conf_old32.pc_subvendor =
778 dinfo->conf.pc_subvendor;
779 conf_old32.pc_subdevice =
780 dinfo->conf.pc_subdevice;
781 conf_old32.pc_vendor =
782 dinfo->conf.pc_vendor;
783 conf_old32.pc_device =
784 dinfo->conf.pc_device;
785 conf_old32.pc_class =
786 dinfo->conf.pc_class;
787 conf_old32.pc_subclass =
788 dinfo->conf.pc_subclass;
789 conf_old32.pc_progif =
790 dinfo->conf.pc_progif;
791 conf_old32.pc_revid =
792 dinfo->conf.pc_revid;
793 strncpy(conf_old32.pd_name,
794 dinfo->conf.pd_name,
795 sizeof(conf_old32.pd_name));
796 conf_old32.pd_name[PCI_MAXNAMELEN16] = 0;
797 conf_old32.pd_unit =
798 (uint32_t)dinfo->conf.pd_unit;
799 confdata = &conf_old32;
800 } else
801#endif /* COMPAT_FREEBSD32 */
802 if (cmd == PCIOCGETCONF_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io)) & ((1 << 13) - 1)) << 16) | ((
('p')) << 8) | ((1))))
) {
15
Taking true branch
803 conf_old.pc_sel.pc_bus =
804 dinfo->conf.pc_sel.pc_bus;
805 conf_old.pc_sel.pc_dev =
806 dinfo->conf.pc_sel.pc_dev;
807 conf_old.pc_sel.pc_func =
808 dinfo->conf.pc_sel.pc_func;
809 conf_old.pc_hdr = dinfo->conf.pc_hdr;
810 conf_old.pc_subvendor =
811 dinfo->conf.pc_subvendor;
812 conf_old.pc_subdevice =
813 dinfo->conf.pc_subdevice;
814 conf_old.pc_vendor =
815 dinfo->conf.pc_vendor;
816 conf_old.pc_device =
817 dinfo->conf.pc_device;
818 conf_old.pc_class =
819 dinfo->conf.pc_class;
820 conf_old.pc_subclass =
821 dinfo->conf.pc_subclass;
822 conf_old.pc_progif =
823 dinfo->conf.pc_progif;
824 conf_old.pc_revid =
825 dinfo->conf.pc_revid;
826 strncpy(conf_old.pd_name,
827 dinfo->conf.pd_name,
828 sizeof(conf_old.pd_name));
829 conf_old.pd_name[PCI_MAXNAMELEN16] = 0;
830 conf_old.pd_unit =
831 dinfo->conf.pd_unit;
832 confdata = &conf_old;
833 } else
834#endif /* PRE7_COMPAT */
835 confdata = &dinfo->conf;
836 /* Only if we can copy it out do we count it. */
837 if (!(error = copyout(confdata,
16
Copies out a struct with uncleared padding (>= 7 bytes)
838 (caddr_t)cio->matches +
839 confsz * cio->num_matches, confsz)))
840 cio->num_matches++;
841 }
842 }
843
844 /*
845 * Set the pointer into the list, so if the user is getting
846 * n records at a time, where n < pci_numdevs,
847 */
848 cio->offset = i;
849
850 /*
851 * Set the generation, the user will need this if they make
852 * another ioctl call with offset != 0.
853 */
854 cio->generation = pci_generation;
855
856 /*
857 * If this is the last device, inform the user so he won't
858 * bother asking for more devices. If dinfo isn't NULL, we
859 * know that there are more matches in the list because of
860 * the way the traversal is done.
861 */
862 if (dinfo == NULL((void *)0))
863 cio->status = PCI_GETCONF_LAST_DEVICE;
864 else
865 cio->status = PCI_GETCONF_MORE_DEVS;
866
867getconfexit:
868#ifdef PRE7_COMPAT
869#ifdef COMPAT_FREEBSD321
870 if (cmd == PCIOCGETCONF_OLD32((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_conf_io32)) & ((1 << 13) - 1)) << 16) | (
(('p')) << 8) | ((1))))
) {
871 cio32->status = cio->status;
872 cio32->generation = cio->generation;
873 cio32->offset = cio->offset;
874 cio32->num_matches = cio->num_matches;
875 free(cio, M_TEMP);
876 }
877 if (pattern_buf_old32 != NULL((void *)0))
878 free(pattern_buf_old32, M_TEMP);
879#endif
880 if (pattern_buf_old != NULL((void *)0))
881 free(pattern_buf_old, M_TEMP);
882#endif
883 if (pattern_buf != NULL((void *)0))
884 free(pattern_buf, M_TEMP);
885
886 break;
887
888#ifdef PRE7_COMPAT
889 case PCIOCREAD_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io_old)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((2))))
:
890 case PCIOCWRITE_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io_old)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((3))))
:
891 io_old = (struct pci_io_old *)data;
892 iodata.pi_sel.pc_domain = 0;
893 iodata.pi_sel.pc_bus = io_old->pi_sel.pc_bus;
894 iodata.pi_sel.pc_dev = io_old->pi_sel.pc_dev;
895 iodata.pi_sel.pc_func = io_old->pi_sel.pc_func;
896 iodata.pi_reg = io_old->pi_reg;
897 iodata.pi_width = io_old->pi_width;
898 iodata.pi_data = io_old->pi_data;
899 data = (caddr_t)&iodata;
900 /* FALLTHROUGH */
901#endif
902 case PCIOCREAD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io)) & ((1 << 13) - 1)) << 16) | ((('p')
) << 8) | ((2))))
:
903 case PCIOCWRITE((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io)) & ((1 << 13) - 1)) << 16) | ((('p')
) << 8) | ((3))))
:
904 io = (struct pci_io *)data;
905 switch(io->pi_width) {
906 case 4:
907 case 2:
908 case 1:
909 /* Make sure register is not negative and aligned. */
910 if (io->pi_reg < 0 ||
911 io->pi_reg & (io->pi_width - 1)) {
912 error = EINVAL22;
913 break;
914 }
915 /*
916 * Assume that the user-level bus number is
917 * in fact the physical PCI bus number.
918 * Look up the grandparent, i.e. the bridge device,
919 * so that we can issue configuration space cycles.
920 */
921 pcidev = pci_find_dbsf(io->pi_sel.pc_domain,
922 io->pi_sel.pc_bus, io->pi_sel.pc_dev,
923 io->pi_sel.pc_func);
924 if (pcidev) {
925#ifdef PRE7_COMPAT
926 if (cmd == PCIOCWRITE((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io)) & ((1 << 13) - 1)) << 16) | ((('p')
) << 8) | ((3))))
|| cmd == PCIOCWRITE_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io_old)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((3))))
)
927#else
928 if (cmd == PCIOCWRITE((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io)) & ((1 << 13) - 1)) << 16) | ((('p')
) << 8) | ((3))))
)
929#endif
930 pci_write_config(pcidev,
931 io->pi_reg,
932 io->pi_data,
933 io->pi_width);
934#ifdef PRE7_COMPAT
935 else if (cmd == PCIOCREAD_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io_old)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((2))))
)
936 io_old->pi_data =
937 pci_read_config(pcidev,
938 io->pi_reg,
939 io->pi_width);
940#endif
941 else
942 io->pi_data =
943 pci_read_config(pcidev,
944 io->pi_reg,
945 io->pi_width);
946 error = 0;
947 } else {
948#ifdef COMPAT_FREEBSD41
949 if (cmd == PCIOCREAD_OLD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io_old)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((2))))
) {
950 io_old->pi_data = -1;
951 error = 0;
952 } else
953#endif
954 error = ENODEV19;
955 }
956 break;
957 default:
958 error = EINVAL22;
959 break;
960 }
961 break;
962
963 case PCIOCGETBAR((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_bar_io)) & ((1 << 13) - 1)) << 16) | (((
'p')) << 8) | ((6))))
:
964 bio = (struct pci_bar_io *)data;
965
966 /*
967 * Assume that the user-level bus number is
968 * in fact the physical PCI bus number.
969 */
970 pcidev = pci_find_dbsf(bio->pbi_sel.pc_domain,
971 bio->pbi_sel.pc_bus, bio->pbi_sel.pc_dev,
972 bio->pbi_sel.pc_func);
973 if (pcidev == NULL((void *)0)) {
974 error = ENODEV19;
975 break;
976 }
977 pm = pci_find_bar(pcidev, bio->pbi_reg);
978 if (pm == NULL((void *)0)) {
979 error = EINVAL22;
980 break;
981 }
982 bio->pbi_base = pm->pm_value;
983 bio->pbi_length = (pci_addr_t)1 << pm->pm_size;
984 bio->pbi_enabled = pci_bar_enabled(pcidev, pm);
985 error = 0;
986 break;
987 case PCIOCATTACHED((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_io)) & ((1 << 13) - 1)) << 16) | ((('p')
) << 8) | ((4))))
:
988 error = 0;
989 io = (struct pci_io *)data;
990 pcidev = pci_find_dbsf(io->pi_sel.pc_domain, io->pi_sel.pc_bus,
991 io->pi_sel.pc_dev, io->pi_sel.pc_func);
992 if (pcidev != NULL((void *)0))
993 io->pi_data = device_is_attached(pcidev);
994 else
995 error = ENODEV19;
996 break;
997 case PCIOCLISTVPD((unsigned long) (((0x80000000|0x40000000)) | (((sizeof(struct
pci_list_vpd_io)) & ((1 << 13) - 1)) << 16) |
((('p')) << 8) | ((7))))
:
998 lvio = (struct pci_list_vpd_io *)data;
999
1000 /*
1001 * Assume that the user-level bus number is
1002 * in fact the physical PCI bus number.
1003 */
1004 pcidev = pci_find_dbsf(lvio->plvi_sel.pc_domain,
1005 lvio->plvi_sel.pc_bus, lvio->plvi_sel.pc_dev,
1006 lvio->plvi_sel.pc_func);
1007 if (pcidev == NULL((void *)0)) {
1008 error = ENODEV19;
1009 break;
1010 }
1011 error = pci_list_vpd(pcidev, lvio);
1012 break;
1013 default:
1014 error = ENOTTY25;
1015 break;
1016 }
1017
1018 return (error);
1019}