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1.1 root 1: /*
2: * Linux host USB redirector
3: *
4: * Copyright (c) 2005 Fabrice Bellard
5: *
6: * Copyright (c) 2008 Max Krasnyansky
7: * Support for host device auto connect & disconnect
8: * Major rewrite to support fully async operation
9: *
10: * Copyright 2008 TJ <[email protected]>
11: * Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition
12: * to the legacy /proc/bus/usb USB device discovery and handling
13: *
14: * Permission is hereby granted, free of charge, to any person obtaining a copy
15: * of this software and associated documentation files (the "Software"), to deal
16: * in the Software without restriction, including without limitation the rights
17: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
18: * copies of the Software, and to permit persons to whom the Software is
19: * furnished to do so, subject to the following conditions:
20: *
21: * The above copyright notice and this permission notice shall be included in
22: * all copies or substantial portions of the Software.
23: *
24: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25: * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
27: * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
29: * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
30: * THE SOFTWARE.
31: */
32:
33: #include "qemu-common.h"
34: #include "qemu-timer.h"
35: #include "monitor.h"
36: #include "sysemu.h"
37: #include "trace.h"
38:
39: #include <dirent.h>
40: #include <sys/ioctl.h>
41:
42: #include <linux/usbdevice_fs.h>
43: #include <linux/version.h>
44: #include "hw/usb.h"
45: #include "hw/usb/desc.h"
46:
47: /* We redefine it to avoid version problems */
48: struct usb_ctrltransfer {
49: uint8_t bRequestType;
50: uint8_t bRequest;
51: uint16_t wValue;
52: uint16_t wIndex;
53: uint16_t wLength;
54: uint32_t timeout;
55: void *data;
56: };
57:
58: typedef int USBScanFunc(void *opaque, int bus_num, int addr, const char *port,
59: int class_id, int vendor_id, int product_id,
60: const char *product_name, int speed);
61:
62: //#define DEBUG
63:
64: #ifdef DEBUG
65: #define DPRINTF printf
66: #else
67: #define DPRINTF(...)
68: #endif
69:
70: #define PRODUCT_NAME_SZ 32
71: #define MAX_PORTLEN 16
72:
73: /* endpoint association data */
74: #define ISO_FRAME_DESC_PER_URB 32
75:
76: /* devio.c limits single requests to 16k */
77: #define MAX_USBFS_BUFFER_SIZE 16384
78:
79: typedef struct AsyncURB AsyncURB;
80:
81: struct endp_data {
82: uint8_t halted;
83: uint8_t iso_started;
84: AsyncURB *iso_urb;
85: int iso_urb_idx;
86: int iso_buffer_used;
87: int inflight;
88: };
89:
90: struct USBAutoFilter {
91: uint32_t bus_num;
92: uint32_t addr;
93: char *port;
94: uint32_t vendor_id;
95: uint32_t product_id;
96: };
97:
98: enum USBHostDeviceOptions {
99: USB_HOST_OPT_PIPELINE,
100: };
101:
102: typedef struct USBHostDevice {
103: USBDevice dev;
104: int fd;
105: int hub_fd;
106: int hub_port;
107:
108: uint8_t descr[8192];
109: int descr_len;
110: int closing;
111: uint32_t iso_urb_count;
112: uint32_t options;
113: Notifier exit;
114:
115: struct endp_data ep_in[USB_MAX_ENDPOINTS];
116: struct endp_data ep_out[USB_MAX_ENDPOINTS];
117: QLIST_HEAD(, AsyncURB) aurbs;
118:
119: /* Host side address */
120: int bus_num;
121: int addr;
122: char port[MAX_PORTLEN];
123: struct USBAutoFilter match;
124: int32_t bootindex;
125: int seen, errcount;
126:
127: QTAILQ_ENTRY(USBHostDevice) next;
128: } USBHostDevice;
129:
130: static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs);
131:
132: static int usb_host_close(USBHostDevice *dev);
133: static int parse_filter(const char *spec, struct USBAutoFilter *f);
134: static void usb_host_auto_check(void *unused);
135: static int usb_host_read_file(char *line, size_t line_size,
136: const char *device_file, const char *device_name);
137: static int usb_linux_update_endp_table(USBHostDevice *s);
138:
139: static int usb_host_usbfs_type(USBHostDevice *s, USBPacket *p)
140: {
141: static const int usbfs[] = {
142: [USB_ENDPOINT_XFER_CONTROL] = USBDEVFS_URB_TYPE_CONTROL,
143: [USB_ENDPOINT_XFER_ISOC] = USBDEVFS_URB_TYPE_ISO,
144: [USB_ENDPOINT_XFER_BULK] = USBDEVFS_URB_TYPE_BULK,
145: [USB_ENDPOINT_XFER_INT] = USBDEVFS_URB_TYPE_INTERRUPT,
146: };
147: uint8_t type = p->ep->type;
148: assert(type < ARRAY_SIZE(usbfs));
149: return usbfs[type];
150: }
151:
152: static int usb_host_do_reset(USBHostDevice *dev)
153: {
154: struct timeval s, e;
155: uint32_t usecs;
156: int ret;
157:
158: gettimeofday(&s, NULL);
159: ret = ioctl(dev->fd, USBDEVFS_RESET);
160: gettimeofday(&e, NULL);
161: usecs = (e.tv_sec - s.tv_sec) * 1000000;
162: usecs += e.tv_usec - s.tv_usec;
163: if (usecs > 1000000) {
164: /* more than a second, something is fishy, broken usb device? */
165: fprintf(stderr, "husb: device %d:%d reset took %d.%06d seconds\n",
166: dev->bus_num, dev->addr, usecs / 1000000, usecs % 1000000);
167: }
168: return ret;
169: }
170:
171: static struct endp_data *get_endp(USBHostDevice *s, int pid, int ep)
172: {
173: struct endp_data *eps = pid == USB_TOKEN_IN ? s->ep_in : s->ep_out;
174: assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT);
175: assert(ep > 0 && ep <= USB_MAX_ENDPOINTS);
176: return eps + ep - 1;
177: }
178:
179: static int is_isoc(USBHostDevice *s, int pid, int ep)
180: {
181: return usb_ep_get_type(&s->dev, pid, ep) == USB_ENDPOINT_XFER_ISOC;
182: }
183:
184: static int is_valid(USBHostDevice *s, int pid, int ep)
185: {
186: return usb_ep_get_type(&s->dev, pid, ep) != USB_ENDPOINT_XFER_INVALID;
187: }
188:
189: static int is_halted(USBHostDevice *s, int pid, int ep)
190: {
191: return get_endp(s, pid, ep)->halted;
192: }
193:
194: static void clear_halt(USBHostDevice *s, int pid, int ep)
195: {
196: trace_usb_host_ep_clear_halt(s->bus_num, s->addr, ep);
197: get_endp(s, pid, ep)->halted = 0;
198: }
199:
200: static void set_halt(USBHostDevice *s, int pid, int ep)
201: {
202: if (ep != 0) {
203: trace_usb_host_ep_set_halt(s->bus_num, s->addr, ep);
204: get_endp(s, pid, ep)->halted = 1;
205: }
206: }
207:
208: static int is_iso_started(USBHostDevice *s, int pid, int ep)
209: {
210: return get_endp(s, pid, ep)->iso_started;
211: }
212:
213: static void clear_iso_started(USBHostDevice *s, int pid, int ep)
214: {
215: trace_usb_host_ep_stop_iso(s->bus_num, s->addr, ep);
216: get_endp(s, pid, ep)->iso_started = 0;
217: }
218:
219: static void set_iso_started(USBHostDevice *s, int pid, int ep)
220: {
221: struct endp_data *e = get_endp(s, pid, ep);
222:
223: trace_usb_host_ep_start_iso(s->bus_num, s->addr, ep);
224: if (!e->iso_started) {
225: e->iso_started = 1;
226: e->inflight = 0;
227: }
228: }
229:
230: static int change_iso_inflight(USBHostDevice *s, int pid, int ep, int value)
231: {
232: struct endp_data *e = get_endp(s, pid, ep);
233:
234: e->inflight += value;
235: return e->inflight;
236: }
237:
238: static void set_iso_urb(USBHostDevice *s, int pid, int ep, AsyncURB *iso_urb)
239: {
240: get_endp(s, pid, ep)->iso_urb = iso_urb;
241: }
242:
243: static AsyncURB *get_iso_urb(USBHostDevice *s, int pid, int ep)
244: {
245: return get_endp(s, pid, ep)->iso_urb;
246: }
247:
248: static void set_iso_urb_idx(USBHostDevice *s, int pid, int ep, int i)
249: {
250: get_endp(s, pid, ep)->iso_urb_idx = i;
251: }
252:
253: static int get_iso_urb_idx(USBHostDevice *s, int pid, int ep)
254: {
255: return get_endp(s, pid, ep)->iso_urb_idx;
256: }
257:
258: static void set_iso_buffer_used(USBHostDevice *s, int pid, int ep, int i)
259: {
260: get_endp(s, pid, ep)->iso_buffer_used = i;
261: }
262:
263: static int get_iso_buffer_used(USBHostDevice *s, int pid, int ep)
264: {
265: return get_endp(s, pid, ep)->iso_buffer_used;
266: }
267:
268: /*
269: * Async URB state.
270: * We always allocate iso packet descriptors even for bulk transfers
271: * to simplify allocation and casts.
272: */
273: struct AsyncURB
274: {
275: struct usbdevfs_urb urb;
276: struct usbdevfs_iso_packet_desc isocpd[ISO_FRAME_DESC_PER_URB];
277: USBHostDevice *hdev;
278: QLIST_ENTRY(AsyncURB) next;
279:
280: /* For regular async urbs */
281: USBPacket *packet;
282: int more; /* large transfer, more urbs follow */
283:
284: /* For buffered iso handling */
285: int iso_frame_idx; /* -1 means in flight */
286: };
287:
288: static AsyncURB *async_alloc(USBHostDevice *s)
289: {
290: AsyncURB *aurb = g_malloc0(sizeof(AsyncURB));
291: aurb->hdev = s;
292: QLIST_INSERT_HEAD(&s->aurbs, aurb, next);
293: return aurb;
294: }
295:
296: static void async_free(AsyncURB *aurb)
297: {
298: QLIST_REMOVE(aurb, next);
299: g_free(aurb);
300: }
301:
302: static void do_disconnect(USBHostDevice *s)
303: {
304: usb_host_close(s);
305: usb_host_auto_check(NULL);
306: }
307:
308: static void async_complete(void *opaque)
309: {
310: USBHostDevice *s = opaque;
311: AsyncURB *aurb;
312: int urbs = 0;
313:
314: while (1) {
315: USBPacket *p;
316:
317: int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
318: if (r < 0) {
319: if (errno == EAGAIN) {
320: if (urbs > 2) {
321: fprintf(stderr, "husb: %d iso urbs finished at once\n", urbs);
322: }
323: return;
324: }
325: if (errno == ENODEV) {
326: if (!s->closing) {
327: trace_usb_host_disconnect(s->bus_num, s->addr);
328: do_disconnect(s);
329: }
330: return;
331: }
332:
333: perror("USBDEVFS_REAPURBNDELAY");
334: return;
335: }
336:
337: DPRINTF("husb: async completed. aurb %p status %d alen %d\n",
338: aurb, aurb->urb.status, aurb->urb.actual_length);
339:
340: /* If this is a buffered iso urb mark it as complete and don't do
341: anything else (it is handled further in usb_host_handle_iso_data) */
342: if (aurb->iso_frame_idx == -1) {
343: int inflight;
344: int pid = (aurb->urb.endpoint & USB_DIR_IN) ?
345: USB_TOKEN_IN : USB_TOKEN_OUT;
346: int ep = aurb->urb.endpoint & 0xf;
347: if (aurb->urb.status == -EPIPE) {
348: set_halt(s, pid, ep);
349: }
350: aurb->iso_frame_idx = 0;
351: urbs++;
352: inflight = change_iso_inflight(s, pid, ep, -1);
353: if (inflight == 0 && is_iso_started(s, pid, ep)) {
354: fprintf(stderr, "husb: out of buffers for iso stream\n");
355: }
356: continue;
357: }
358:
359: p = aurb->packet;
360: trace_usb_host_urb_complete(s->bus_num, s->addr, aurb, aurb->urb.status,
361: aurb->urb.actual_length, aurb->more);
362:
363: if (p) {
364: switch (aurb->urb.status) {
365: case 0:
366: p->result += aurb->urb.actual_length;
367: break;
368:
369: case -EPIPE:
370: set_halt(s, p->pid, p->ep->nr);
371: p->result = USB_RET_STALL;
372: break;
373:
374: case -EOVERFLOW:
375: p->result = USB_RET_BABBLE;
376: break;
377:
378: default:
379: p->result = USB_RET_IOERROR;
380: break;
381: }
382:
383: if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) {
384: trace_usb_host_req_complete(s->bus_num, s->addr, p, p->result);
385: usb_generic_async_ctrl_complete(&s->dev, p);
386: } else if (!aurb->more) {
387: trace_usb_host_req_complete(s->bus_num, s->addr, p, p->result);
388: usb_packet_complete(&s->dev, p);
389: }
390: }
391:
392: async_free(aurb);
393: }
394: }
395:
396: static void usb_host_async_cancel(USBDevice *dev, USBPacket *p)
397: {
398: USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
399: AsyncURB *aurb;
400:
401: trace_usb_host_req_canceled(s->bus_num, s->addr, p);
402:
403: QLIST_FOREACH(aurb, &s->aurbs, next) {
404: if (p != aurb->packet) {
405: continue;
406: }
407:
408: trace_usb_host_urb_canceled(s->bus_num, s->addr, aurb);
409:
410: /* Mark it as dead (see async_complete above) */
411: aurb->packet = NULL;
412:
413: int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
414: if (r < 0) {
415: DPRINTF("husb: async. discard urb failed errno %d\n", errno);
416: }
417: }
418: }
419:
420: static int usb_host_open_device(int bus, int addr)
421: {
422: const char *usbfs = NULL;
423: char filename[32];
424: struct stat st;
425: int fd, rc;
426:
427: rc = stat("/dev/bus/usb", &st);
428: if (rc == 0 && S_ISDIR(st.st_mode)) {
429: /* udev-created device nodes available */
430: usbfs = "/dev/bus/usb";
431: } else {
432: /* fallback: usbfs mounted below /proc */
433: usbfs = "/proc/bus/usb";
434: }
435:
436: snprintf(filename, sizeof(filename), "%s/%03d/%03d",
437: usbfs, bus, addr);
438: fd = open(filename, O_RDWR | O_NONBLOCK);
439: if (fd < 0) {
440: fprintf(stderr, "husb: open %s: %s\n", filename, strerror(errno));
441: }
442: return fd;
443: }
444:
445: static int usb_host_claim_port(USBHostDevice *s)
446: {
447: #ifdef USBDEVFS_CLAIM_PORT
448: char *h, hub_name[64], line[1024];
449: int hub_addr, ret;
450:
451: snprintf(hub_name, sizeof(hub_name), "%d-%s",
452: s->match.bus_num, s->match.port);
453:
454: /* try strip off last ".$portnr" to get hub */
455: h = strrchr(hub_name, '.');
456: if (h != NULL) {
457: s->hub_port = atoi(h+1);
458: *h = '\0';
459: } else {
460: /* no dot in there -> it is the root hub */
461: snprintf(hub_name, sizeof(hub_name), "usb%d",
462: s->match.bus_num);
463: s->hub_port = atoi(s->match.port);
464: }
465:
466: if (!usb_host_read_file(line, sizeof(line), "devnum",
467: hub_name)) {
468: return -1;
469: }
470: if (sscanf(line, "%d", &hub_addr) != 1) {
471: return -1;
472: }
473:
474: s->hub_fd = usb_host_open_device(s->match.bus_num, hub_addr);
475: if (s->hub_fd < 0) {
476: return -1;
477: }
478:
479: ret = ioctl(s->hub_fd, USBDEVFS_CLAIM_PORT, &s->hub_port);
480: if (ret < 0) {
481: close(s->hub_fd);
482: s->hub_fd = -1;
483: return -1;
484: }
485:
486: trace_usb_host_claim_port(s->match.bus_num, hub_addr, s->hub_port);
487: return 0;
488: #else
489: return -1;
490: #endif
491: }
492:
493: static void usb_host_release_port(USBHostDevice *s)
494: {
495: if (s->hub_fd == -1) {
496: return;
497: }
498: #ifdef USBDEVFS_RELEASE_PORT
499: ioctl(s->hub_fd, USBDEVFS_RELEASE_PORT, &s->hub_port);
500: #endif
501: close(s->hub_fd);
502: s->hub_fd = -1;
503: }
504:
505: static int usb_host_disconnect_ifaces(USBHostDevice *dev, int nb_interfaces)
506: {
507: /* earlier Linux 2.4 do not support that */
508: #ifdef USBDEVFS_DISCONNECT
509: struct usbdevfs_ioctl ctrl;
510: int ret, interface;
511:
512: for (interface = 0; interface < nb_interfaces; interface++) {
513: ctrl.ioctl_code = USBDEVFS_DISCONNECT;
514: ctrl.ifno = interface;
515: ctrl.data = 0;
516: ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
517: if (ret < 0 && errno != ENODATA) {
518: perror("USBDEVFS_DISCONNECT");
519: return -1;
520: }
521: }
522: #endif
523: return 0;
524: }
525:
526: static int usb_linux_get_num_interfaces(USBHostDevice *s)
527: {
528: char device_name[64], line[1024];
529: int num_interfaces = 0;
530:
531: sprintf(device_name, "%d-%s", s->bus_num, s->port);
532: if (!usb_host_read_file(line, sizeof(line), "bNumInterfaces",
533: device_name)) {
534: return -1;
535: }
536: if (sscanf(line, "%d", &num_interfaces) != 1) {
537: return -1;
538: }
539: return num_interfaces;
540: }
541:
542: static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
543: {
544: const char *op = NULL;
545: int dev_descr_len, config_descr_len;
546: int interface, nb_interfaces;
547: int ret, i;
548:
549: for (i = 0; i < USB_MAX_INTERFACES; i++) {
550: dev->dev.altsetting[i] = 0;
551: }
552:
553: if (configuration == 0) { /* address state - ignore */
554: dev->dev.ninterfaces = 0;
555: dev->dev.configuration = 0;
556: return 1;
557: }
558:
559: DPRINTF("husb: claiming interfaces. config %d\n", configuration);
560:
561: i = 0;
562: dev_descr_len = dev->descr[0];
563: if (dev_descr_len > dev->descr_len) {
564: fprintf(stderr, "husb: update iface failed. descr too short\n");
565: return 0;
566: }
567:
568: i += dev_descr_len;
569: while (i < dev->descr_len) {
570: DPRINTF("husb: i is %d, descr_len is %d, dl %d, dt %d\n",
571: i, dev->descr_len,
572: dev->descr[i], dev->descr[i+1]);
573:
574: if (dev->descr[i+1] != USB_DT_CONFIG) {
575: i += dev->descr[i];
576: continue;
577: }
578: config_descr_len = dev->descr[i];
579:
580: DPRINTF("husb: config #%d need %d\n", dev->descr[i + 5], configuration);
581:
582: if (configuration == dev->descr[i + 5]) {
583: configuration = dev->descr[i + 5];
584: break;
585: }
586:
587: i += config_descr_len;
588: }
589:
590: if (i >= dev->descr_len) {
591: fprintf(stderr,
592: "husb: update iface failed. no matching configuration\n");
593: return 0;
594: }
595: nb_interfaces = dev->descr[i + 4];
596:
597: if (usb_host_disconnect_ifaces(dev, nb_interfaces) < 0) {
598: goto fail;
599: }
600:
601: /* XXX: only grab if all interfaces are free */
602: for (interface = 0; interface < nb_interfaces; interface++) {
603: op = "USBDEVFS_CLAIMINTERFACE";
604: ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
605: if (ret < 0) {
606: goto fail;
607: }
608: }
609:
610: trace_usb_host_claim_interfaces(dev->bus_num, dev->addr,
611: nb_interfaces, configuration);
612:
613: dev->dev.ninterfaces = nb_interfaces;
614: dev->dev.configuration = configuration;
615: return 1;
616:
617: fail:
618: if (errno == ENODEV) {
619: do_disconnect(dev);
620: }
621: perror(op);
622: return 0;
623: }
624:
625: static int usb_host_release_interfaces(USBHostDevice *s)
626: {
627: int ret, i;
628:
629: trace_usb_host_release_interfaces(s->bus_num, s->addr);
630:
631: for (i = 0; i < s->dev.ninterfaces; i++) {
632: ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i);
633: if (ret < 0) {
634: perror("USBDEVFS_RELEASEINTERFACE");
635: return 0;
636: }
637: }
638: return 1;
639: }
640:
641: static void usb_host_handle_reset(USBDevice *dev)
642: {
643: USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
644:
645: trace_usb_host_reset(s->bus_num, s->addr);
646:
647: usb_host_do_reset(s);;
648:
649: usb_host_claim_interfaces(s, 0);
650: usb_linux_update_endp_table(s);
651: }
652:
653: static void usb_host_handle_destroy(USBDevice *dev)
654: {
655: USBHostDevice *s = (USBHostDevice *)dev;
656:
657: usb_host_release_port(s);
658: usb_host_close(s);
659: QTAILQ_REMOVE(&hostdevs, s, next);
660: qemu_remove_exit_notifier(&s->exit);
661: }
662:
663: /* iso data is special, we need to keep enough urbs in flight to make sure
664: that the controller never runs out of them, otherwise the device will
665: likely suffer a buffer underrun / overrun. */
666: static AsyncURB *usb_host_alloc_iso(USBHostDevice *s, int pid, uint8_t ep)
667: {
668: AsyncURB *aurb;
669: int i, j, len = usb_ep_get_max_packet_size(&s->dev, pid, ep);
670:
671: aurb = g_malloc0(s->iso_urb_count * sizeof(*aurb));
672: for (i = 0; i < s->iso_urb_count; i++) {
673: aurb[i].urb.endpoint = ep;
674: aurb[i].urb.buffer_length = ISO_FRAME_DESC_PER_URB * len;
675: aurb[i].urb.buffer = g_malloc(aurb[i].urb.buffer_length);
676: aurb[i].urb.type = USBDEVFS_URB_TYPE_ISO;
677: aurb[i].urb.flags = USBDEVFS_URB_ISO_ASAP;
678: aurb[i].urb.number_of_packets = ISO_FRAME_DESC_PER_URB;
679: for (j = 0 ; j < ISO_FRAME_DESC_PER_URB; j++)
680: aurb[i].urb.iso_frame_desc[j].length = len;
681: if (pid == USB_TOKEN_IN) {
682: aurb[i].urb.endpoint |= 0x80;
683: /* Mark as fully consumed (idle) */
684: aurb[i].iso_frame_idx = ISO_FRAME_DESC_PER_URB;
685: }
686: }
687: set_iso_urb(s, pid, ep, aurb);
688:
689: return aurb;
690: }
691:
692: static void usb_host_stop_n_free_iso(USBHostDevice *s, int pid, uint8_t ep)
693: {
694: AsyncURB *aurb;
695: int i, ret, killed = 0, free = 1;
696:
697: aurb = get_iso_urb(s, pid, ep);
698: if (!aurb) {
699: return;
700: }
701:
702: for (i = 0; i < s->iso_urb_count; i++) {
703: /* in flight? */
704: if (aurb[i].iso_frame_idx == -1) {
705: ret = ioctl(s->fd, USBDEVFS_DISCARDURB, &aurb[i]);
706: if (ret < 0) {
707: perror("USBDEVFS_DISCARDURB");
708: free = 0;
709: continue;
710: }
711: killed++;
712: }
713: }
714:
715: /* Make sure any urbs we've killed are reaped before we free them */
716: if (killed) {
717: async_complete(s);
718: }
719:
720: for (i = 0; i < s->iso_urb_count; i++) {
721: g_free(aurb[i].urb.buffer);
722: }
723:
724: if (free)
725: g_free(aurb);
726: else
727: printf("husb: leaking iso urbs because of discard failure\n");
728: set_iso_urb(s, pid, ep, NULL);
729: set_iso_urb_idx(s, pid, ep, 0);
730: clear_iso_started(s, pid, ep);
731: }
732:
733: static int urb_status_to_usb_ret(int status)
734: {
735: switch (status) {
736: case -EPIPE:
737: return USB_RET_STALL;
738: case -EOVERFLOW:
739: return USB_RET_BABBLE;
740: default:
741: return USB_RET_IOERROR;
742: }
743: }
744:
745: static int usb_host_handle_iso_data(USBHostDevice *s, USBPacket *p, int in)
746: {
747: AsyncURB *aurb;
748: int i, j, ret, max_packet_size, offset, len = 0;
749: uint8_t *buf;
750:
751: max_packet_size = p->ep->max_packet_size;
752: if (max_packet_size == 0)
753: return USB_RET_NAK;
754:
755: aurb = get_iso_urb(s, p->pid, p->ep->nr);
756: if (!aurb) {
757: aurb = usb_host_alloc_iso(s, p->pid, p->ep->nr);
758: }
759:
760: i = get_iso_urb_idx(s, p->pid, p->ep->nr);
761: j = aurb[i].iso_frame_idx;
762: if (j >= 0 && j < ISO_FRAME_DESC_PER_URB) {
763: if (in) {
764: /* Check urb status */
765: if (aurb[i].urb.status) {
766: len = urb_status_to_usb_ret(aurb[i].urb.status);
767: /* Move to the next urb */
768: aurb[i].iso_frame_idx = ISO_FRAME_DESC_PER_URB - 1;
769: /* Check frame status */
770: } else if (aurb[i].urb.iso_frame_desc[j].status) {
771: len = urb_status_to_usb_ret(
772: aurb[i].urb.iso_frame_desc[j].status);
773: /* Check the frame fits */
774: } else if (aurb[i].urb.iso_frame_desc[j].actual_length
775: > p->iov.size) {
776: printf("husb: received iso data is larger then packet\n");
777: len = USB_RET_BABBLE;
778: /* All good copy data over */
779: } else {
780: len = aurb[i].urb.iso_frame_desc[j].actual_length;
781: buf = aurb[i].urb.buffer +
782: j * aurb[i].urb.iso_frame_desc[0].length;
783: usb_packet_copy(p, buf, len);
784: }
785: } else {
786: len = p->iov.size;
787: offset = (j == 0) ? 0 : get_iso_buffer_used(s, p->pid, p->ep->nr);
788:
789: /* Check the frame fits */
790: if (len > max_packet_size) {
791: printf("husb: send iso data is larger then max packet size\n");
792: return USB_RET_NAK;
793: }
794:
795: /* All good copy data over */
796: usb_packet_copy(p, aurb[i].urb.buffer + offset, len);
797: aurb[i].urb.iso_frame_desc[j].length = len;
798: offset += len;
799: set_iso_buffer_used(s, p->pid, p->ep->nr, offset);
800:
801: /* Start the stream once we have buffered enough data */
802: if (!is_iso_started(s, p->pid, p->ep->nr) && i == 1 && j == 8) {
803: set_iso_started(s, p->pid, p->ep->nr);
804: }
805: }
806: aurb[i].iso_frame_idx++;
807: if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) {
808: i = (i + 1) % s->iso_urb_count;
809: set_iso_urb_idx(s, p->pid, p->ep->nr, i);
810: }
811: } else {
812: if (in) {
813: set_iso_started(s, p->pid, p->ep->nr);
814: } else {
815: DPRINTF("hubs: iso out error no free buffer, dropping packet\n");
816: }
817: }
818:
819: if (is_iso_started(s, p->pid, p->ep->nr)) {
820: /* (Re)-submit all fully consumed / filled urbs */
821: for (i = 0; i < s->iso_urb_count; i++) {
822: if (aurb[i].iso_frame_idx == ISO_FRAME_DESC_PER_URB) {
823: ret = ioctl(s->fd, USBDEVFS_SUBMITURB, &aurb[i]);
824: if (ret < 0) {
825: perror("USBDEVFS_SUBMITURB");
826: if (!in || len == 0) {
827: switch(errno) {
828: case ETIMEDOUT:
829: len = USB_RET_NAK;
830: break;
831: case EPIPE:
832: default:
833: len = USB_RET_STALL;
834: }
835: }
836: break;
837: }
838: aurb[i].iso_frame_idx = -1;
839: change_iso_inflight(s, p->pid, p->ep->nr, 1);
840: }
841: }
842: }
843:
844: return len;
845: }
846:
847: static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
848: {
849: USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
850: struct usbdevfs_urb *urb;
851: AsyncURB *aurb;
852: int ret, rem, prem, v;
853: uint8_t *pbuf;
854: uint8_t ep;
855:
856: trace_usb_host_req_data(s->bus_num, s->addr, p,
857: p->pid == USB_TOKEN_IN,
858: p->ep->nr, p->iov.size);
859:
860: if (!is_valid(s, p->pid, p->ep->nr)) {
861: trace_usb_host_req_complete(s->bus_num, s->addr, p, USB_RET_NAK);
862: return USB_RET_NAK;
863: }
864:
865: if (p->pid == USB_TOKEN_IN) {
866: ep = p->ep->nr | 0x80;
867: } else {
868: ep = p->ep->nr;
869: }
870:
871: if (is_halted(s, p->pid, p->ep->nr)) {
872: unsigned int arg = ep;
873: ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &arg);
874: if (ret < 0) {
875: perror("USBDEVFS_CLEAR_HALT");
876: trace_usb_host_req_complete(s->bus_num, s->addr, p, USB_RET_NAK);
877: return USB_RET_NAK;
878: }
879: clear_halt(s, p->pid, p->ep->nr);
880: }
881:
882: if (is_isoc(s, p->pid, p->ep->nr)) {
883: return usb_host_handle_iso_data(s, p, p->pid == USB_TOKEN_IN);
884: }
885:
886: v = 0;
887: prem = 0;
888: pbuf = NULL;
889: rem = p->iov.size;
890: do {
891: if (prem == 0 && rem > 0) {
892: assert(v < p->iov.niov);
893: prem = p->iov.iov[v].iov_len;
894: pbuf = p->iov.iov[v].iov_base;
895: assert(prem <= rem);
896: v++;
897: }
898: aurb = async_alloc(s);
899: aurb->packet = p;
900:
901: urb = &aurb->urb;
902: urb->endpoint = ep;
903: urb->type = usb_host_usbfs_type(s, p);
904: urb->usercontext = s;
905: urb->buffer = pbuf;
906: urb->buffer_length = prem;
907:
908: if (urb->buffer_length > MAX_USBFS_BUFFER_SIZE) {
909: urb->buffer_length = MAX_USBFS_BUFFER_SIZE;
910: }
911: pbuf += urb->buffer_length;
912: prem -= urb->buffer_length;
913: rem -= urb->buffer_length;
914: if (rem) {
915: aurb->more = 1;
916: }
917:
918: trace_usb_host_urb_submit(s->bus_num, s->addr, aurb,
919: urb->buffer_length, aurb->more);
920: ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
921:
922: DPRINTF("husb: data submit: ep 0x%x, len %u, more %d, packet %p, aurb %p\n",
923: urb->endpoint, urb->buffer_length, aurb->more, p, aurb);
924:
925: if (ret < 0) {
926: perror("USBDEVFS_SUBMITURB");
927: async_free(aurb);
928:
929: switch(errno) {
930: case ETIMEDOUT:
931: trace_usb_host_req_complete(s->bus_num, s->addr, p,
932: USB_RET_NAK);
933: return USB_RET_NAK;
934: case EPIPE:
935: default:
936: trace_usb_host_req_complete(s->bus_num, s->addr, p,
937: USB_RET_STALL);
938: return USB_RET_STALL;
939: }
940: }
941: } while (rem > 0);
942:
943: return USB_RET_ASYNC;
944: }
945:
946: static int ctrl_error(void)
947: {
948: if (errno == ETIMEDOUT) {
949: return USB_RET_NAK;
950: } else {
951: return USB_RET_STALL;
952: }
953: }
954:
955: static int usb_host_set_address(USBHostDevice *s, int addr)
956: {
957: trace_usb_host_set_address(s->bus_num, s->addr, addr);
958: s->dev.addr = addr;
959: return 0;
960: }
961:
962: static int usb_host_set_config(USBHostDevice *s, int config)
963: {
964: int ret, first = 1;
965:
966: trace_usb_host_set_config(s->bus_num, s->addr, config);
967:
968: usb_host_release_interfaces(s);
969:
970: again:
971: ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
972:
973: DPRINTF("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
974:
975: if (ret < 0 && errno == EBUSY && first) {
976: /* happens if usb device is in use by host drivers */
977: int count = usb_linux_get_num_interfaces(s);
978: if (count > 0) {
979: DPRINTF("husb: busy -> disconnecting %d interfaces\n", count);
980: usb_host_disconnect_ifaces(s, count);
981: first = 0;
982: goto again;
983: }
984: }
985:
986: if (ret < 0) {
987: return ctrl_error();
988: }
989: usb_host_claim_interfaces(s, config);
990: usb_linux_update_endp_table(s);
991: return 0;
992: }
993:
994: static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
995: {
996: struct usbdevfs_setinterface si;
997: int i, ret;
998:
999: trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
1000:
1001: for (i = 1; i <= USB_MAX_ENDPOINTS; i++) {
1002: if (is_isoc(s, USB_TOKEN_IN, i)) {
1003: usb_host_stop_n_free_iso(s, USB_TOKEN_IN, i);
1004: }
1005: if (is_isoc(s, USB_TOKEN_OUT, i)) {
1006: usb_host_stop_n_free_iso(s, USB_TOKEN_OUT, i);
1007: }
1008: }
1009:
1010: if (iface >= USB_MAX_INTERFACES) {
1011: return USB_RET_STALL;
1012: }
1013:
1014: si.interface = iface;
1015: si.altsetting = alt;
1016: ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
1017:
1018: DPRINTF("husb: ctrl set iface %d altset %d ret %d errno %d\n",
1019: iface, alt, ret, errno);
1020:
1021: if (ret < 0) {
1022: return ctrl_error();
1023: }
1024:
1025: s->dev.altsetting[iface] = alt;
1026: usb_linux_update_endp_table(s);
1027: return 0;
1028: }
1029:
1030: static int usb_host_handle_control(USBDevice *dev, USBPacket *p,
1031: int request, int value, int index, int length, uint8_t *data)
1032: {
1033: USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
1034: struct usbdevfs_urb *urb;
1035: AsyncURB *aurb;
1036: int ret;
1037:
1038: /*
1039: * Process certain standard device requests.
1040: * These are infrequent and are processed synchronously.
1041: */
1042:
1043: /* Note request is (bRequestType << 8) | bRequest */
1044: trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index);
1045:
1046: switch (request) {
1047: case DeviceOutRequest | USB_REQ_SET_ADDRESS:
1048: ret = usb_host_set_address(s, value);
1049: trace_usb_host_req_emulated(s->bus_num, s->addr, p, ret);
1050: return ret;
1051:
1052: case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
1053: ret = usb_host_set_config(s, value & 0xff);
1054: trace_usb_host_req_emulated(s->bus_num, s->addr, p, ret);
1055: return ret;
1056:
1057: case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
1058: ret = usb_host_set_interface(s, index, value);
1059: trace_usb_host_req_emulated(s->bus_num, s->addr, p, ret);
1060: return ret;
1061:
1062: case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
1063: if (value == 0) { /* clear halt */
1064: int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
1065: ioctl(s->fd, USBDEVFS_CLEAR_HALT, &index);
1066: clear_halt(s, pid, index & 0x0f);
1067: trace_usb_host_req_emulated(s->bus_num, s->addr, p, 0);
1068: return 0;
1069: }
1070: }
1071:
1072: /* The rest are asynchronous */
1073:
1074: if (length > sizeof(dev->data_buf)) {
1075: fprintf(stderr, "husb: ctrl buffer too small (%d > %zu)\n",
1076: length, sizeof(dev->data_buf));
1077: return USB_RET_STALL;
1078: }
1079:
1080: aurb = async_alloc(s);
1081: aurb->packet = p;
1082:
1083: /*
1084: * Setup ctrl transfer.
1085: *
1086: * s->ctrl is laid out such that data buffer immediately follows
1087: * 'req' struct which is exactly what usbdevfs expects.
1088: */
1089: urb = &aurb->urb;
1090:
1091: urb->type = USBDEVFS_URB_TYPE_CONTROL;
1092: urb->endpoint = p->ep->nr;
1093:
1094: urb->buffer = &dev->setup_buf;
1095: urb->buffer_length = length + 8;
1096:
1097: urb->usercontext = s;
1098:
1099: trace_usb_host_urb_submit(s->bus_num, s->addr, aurb,
1100: urb->buffer_length, aurb->more);
1101: ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
1102:
1103: DPRINTF("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
1104:
1105: if (ret < 0) {
1106: DPRINTF("husb: submit failed. errno %d\n", errno);
1107: async_free(aurb);
1108:
1109: switch(errno) {
1110: case ETIMEDOUT:
1111: return USB_RET_NAK;
1112: case EPIPE:
1113: default:
1114: return USB_RET_STALL;
1115: }
1116: }
1117:
1118: return USB_RET_ASYNC;
1119: }
1120:
1121: /* returns 1 on problem encountered or 0 for success */
1122: static int usb_linux_update_endp_table(USBHostDevice *s)
1123: {
1124: static const char *tname[] = {
1125: [USB_ENDPOINT_XFER_CONTROL] = "control",
1126: [USB_ENDPOINT_XFER_ISOC] = "isoc",
1127: [USB_ENDPOINT_XFER_BULK] = "bulk",
1128: [USB_ENDPOINT_XFER_INT] = "int",
1129: };
1130: uint8_t devep, type;
1131: uint16_t mps, v, p;
1132: int ep, pid;
1133: unsigned int i, configuration = -1, interface = -1, altsetting = -1;
1134: struct endp_data *epd;
1135: USBDescriptor *d;
1136: bool active = false;
1137:
1138: usb_ep_init(&s->dev);
1139:
1140: for (i = 0;; i += d->bLength) {
1141: if (i+2 >= s->descr_len) {
1142: break;
1143: }
1144: d = (void *)(s->descr + i);
1145: if (d->bLength < 2) {
1146: trace_usb_host_parse_error(s->bus_num, s->addr,
1147: "descriptor too short");
1148: goto error;
1149: }
1150: if (i + d->bLength > s->descr_len) {
1151: trace_usb_host_parse_error(s->bus_num, s->addr,
1152: "descriptor too long");
1153: goto error;
1154: }
1155: switch (d->bDescriptorType) {
1156: case 0:
1157: trace_usb_host_parse_error(s->bus_num, s->addr,
1158: "invalid descriptor type");
1159: goto error;
1160: case USB_DT_DEVICE:
1161: if (d->bLength < 0x12) {
1162: trace_usb_host_parse_error(s->bus_num, s->addr,
1163: "device descriptor too short");
1164: goto error;
1165: }
1166: v = (d->u.device.idVendor_hi << 8) | d->u.device.idVendor_lo;
1167: p = (d->u.device.idProduct_hi << 8) | d->u.device.idProduct_lo;
1168: trace_usb_host_parse_device(s->bus_num, s->addr, v, p);
1169: break;
1170: case USB_DT_CONFIG:
1171: if (d->bLength < 0x09) {
1172: trace_usb_host_parse_error(s->bus_num, s->addr,
1173: "config descriptor too short");
1174: goto error;
1175: }
1176: configuration = d->u.config.bConfigurationValue;
1177: active = (configuration == s->dev.configuration);
1178: trace_usb_host_parse_config(s->bus_num, s->addr,
1179: configuration, active);
1180: break;
1181: case USB_DT_INTERFACE:
1182: if (d->bLength < 0x09) {
1183: trace_usb_host_parse_error(s->bus_num, s->addr,
1184: "interface descriptor too short");
1185: goto error;
1186: }
1187: interface = d->u.interface.bInterfaceNumber;
1188: altsetting = d->u.interface.bAlternateSetting;
1189: active = (configuration == s->dev.configuration) &&
1190: (altsetting == s->dev.altsetting[interface]);
1191: trace_usb_host_parse_interface(s->bus_num, s->addr,
1192: interface, altsetting, active);
1193: break;
1194: case USB_DT_ENDPOINT:
1195: if (d->bLength < 0x07) {
1196: trace_usb_host_parse_error(s->bus_num, s->addr,
1197: "endpoint descriptor too short");
1198: goto error;
1199: }
1200: devep = d->u.endpoint.bEndpointAddress;
1201: pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
1202: ep = devep & 0xf;
1203: if (ep == 0) {
1204: trace_usb_host_parse_error(s->bus_num, s->addr,
1205: "invalid endpoint address");
1206: goto error;
1207: }
1208:
1209: type = d->u.endpoint.bmAttributes & 0x3;
1210: mps = d->u.endpoint.wMaxPacketSize_lo |
1211: (d->u.endpoint.wMaxPacketSize_hi << 8);
1212: trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep,
1213: (devep & USB_DIR_IN) ? "in" : "out",
1214: tname[type], active);
1215:
1216: if (active) {
1217: usb_ep_set_max_packet_size(&s->dev, pid, ep, mps);
1218: assert(usb_ep_get_type(&s->dev, pid, ep) ==
1219: USB_ENDPOINT_XFER_INVALID);
1220: usb_ep_set_type(&s->dev, pid, ep, type);
1221: usb_ep_set_ifnum(&s->dev, pid, ep, interface);
1222: if ((s->options & (1 << USB_HOST_OPT_PIPELINE)) &&
1223: (type == USB_ENDPOINT_XFER_BULK)) {
1224: usb_ep_set_pipeline(&s->dev, pid, ep, true);
1225: }
1226:
1227: epd = get_endp(s, pid, ep);
1228: epd->halted = 0;
1229: }
1230:
1231: break;
1232: default:
1233: trace_usb_host_parse_unknown(s->bus_num, s->addr,
1234: d->bLength, d->bDescriptorType);
1235: break;
1236: }
1237: }
1238: return 0;
1239:
1240: error:
1241: usb_ep_init(&s->dev);
1242: return 1;
1243: }
1244:
1245: /*
1246: * Check if we can safely redirect a usb2 device to a usb1 virtual controller,
1247: * this function assumes this is safe, if:
1248: * 1) There are no isoc endpoints
1249: * 2) There are no interrupt endpoints with a max_packet_size > 64
1250: * Note bulk endpoints with a max_packet_size > 64 in theory also are not
1251: * usb1 compatible, but in practice this seems to work fine.
1252: */
1253: static int usb_linux_full_speed_compat(USBHostDevice *dev)
1254: {
1255: int i, packet_size;
1256:
1257: /*
1258: * usb_linux_update_endp_table only registers info about ep in the current
1259: * interface altsettings, so we need to parse the descriptors again.
1260: */
1261: for (i = 0; (i + 5) < dev->descr_len; i += dev->descr[i]) {
1262: if (dev->descr[i + 1] == USB_DT_ENDPOINT) {
1263: switch (dev->descr[i + 3] & 0x3) {
1264: case 0x00: /* CONTROL */
1265: break;
1266: case 0x01: /* ISO */
1267: return 0;
1268: case 0x02: /* BULK */
1269: break;
1270: case 0x03: /* INTERRUPT */
1271: packet_size = dev->descr[i + 4] + (dev->descr[i + 5] << 8);
1272: if (packet_size > 64)
1273: return 0;
1274: break;
1275: }
1276: }
1277: }
1278: return 1;
1279: }
1280:
1281: static int usb_host_open(USBHostDevice *dev, int bus_num,
1282: int addr, const char *port,
1283: const char *prod_name, int speed)
1284: {
1285: int fd = -1, ret;
1286:
1287: trace_usb_host_open_started(bus_num, addr);
1288:
1289: if (dev->fd != -1) {
1290: goto fail;
1291: }
1292:
1293: fd = usb_host_open_device(bus_num, addr);
1294: if (fd < 0) {
1295: goto fail;
1296: }
1297: DPRINTF("husb: opened %s\n", buf);
1298:
1299: dev->bus_num = bus_num;
1300: dev->addr = addr;
1301: strcpy(dev->port, port);
1302: dev->fd = fd;
1303:
1304: /* read the device description */
1305: dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
1306: if (dev->descr_len <= 0) {
1307: perror("husb: reading device data failed");
1308: goto fail;
1309: }
1310:
1311: #ifdef DEBUG
1312: {
1313: int x;
1314: printf("=== begin dumping device descriptor data ===\n");
1315: for (x = 0; x < dev->descr_len; x++) {
1316: printf("%02x ", dev->descr[x]);
1317: }
1318: printf("\n=== end dumping device descriptor data ===\n");
1319: }
1320: #endif
1321:
1322:
1323: /* start unconfigured -- we'll wait for the guest to set a configuration */
1324: if (!usb_host_claim_interfaces(dev, 0)) {
1325: goto fail;
1326: }
1327:
1328: ret = usb_linux_update_endp_table(dev);
1329: if (ret) {
1330: goto fail;
1331: }
1332:
1333: if (speed == -1) {
1334: struct usbdevfs_connectinfo ci;
1335:
1336: ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
1337: if (ret < 0) {
1338: perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
1339: goto fail;
1340: }
1341:
1342: if (ci.slow) {
1343: speed = USB_SPEED_LOW;
1344: } else {
1345: speed = USB_SPEED_HIGH;
1346: }
1347: }
1348: dev->dev.speed = speed;
1349: dev->dev.speedmask = (1 << speed);
1350: if (dev->dev.speed == USB_SPEED_HIGH && usb_linux_full_speed_compat(dev)) {
1351: dev->dev.speedmask |= USB_SPEED_MASK_FULL;
1352: }
1353:
1354: trace_usb_host_open_success(bus_num, addr);
1355:
1356: if (!prod_name || prod_name[0] == '\0') {
1357: snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
1358: "host:%d.%d", bus_num, addr);
1359: } else {
1360: pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
1361: prod_name);
1362: }
1363:
1364: ret = usb_device_attach(&dev->dev);
1365: if (ret) {
1366: goto fail;
1367: }
1368:
1369: /* USB devio uses 'write' flag to check for async completions */
1370: qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
1371:
1372: return 0;
1373:
1374: fail:
1375: trace_usb_host_open_failure(bus_num, addr);
1376: if (dev->fd != -1) {
1377: close(dev->fd);
1378: dev->fd = -1;
1379: }
1380: return -1;
1381: }
1382:
1383: static int usb_host_close(USBHostDevice *dev)
1384: {
1385: int i;
1386:
1387: if (dev->fd == -1) {
1388: return -1;
1389: }
1390:
1391: trace_usb_host_close(dev->bus_num, dev->addr);
1392:
1393: qemu_set_fd_handler(dev->fd, NULL, NULL, NULL);
1394: dev->closing = 1;
1395: for (i = 1; i <= USB_MAX_ENDPOINTS; i++) {
1396: if (is_isoc(dev, USB_TOKEN_IN, i)) {
1397: usb_host_stop_n_free_iso(dev, USB_TOKEN_IN, i);
1398: }
1399: if (is_isoc(dev, USB_TOKEN_OUT, i)) {
1400: usb_host_stop_n_free_iso(dev, USB_TOKEN_OUT, i);
1401: }
1402: }
1403: async_complete(dev);
1404: dev->closing = 0;
1405: if (dev->dev.attached) {
1406: usb_device_detach(&dev->dev);
1407: }
1408: usb_host_do_reset(dev);
1409: close(dev->fd);
1410: dev->fd = -1;
1411: return 0;
1412: }
1413:
1414: static void usb_host_exit_notifier(struct Notifier *n, void *data)
1415: {
1416: USBHostDevice *s = container_of(n, USBHostDevice, exit);
1417:
1418: usb_host_release_port(s);
1419: if (s->fd != -1) {
1420: usb_host_do_reset(s);;
1421: }
1422: }
1423:
1424: static int usb_host_initfn(USBDevice *dev)
1425: {
1426: USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
1427:
1428: dev->auto_attach = 0;
1429: s->fd = -1;
1430: s->hub_fd = -1;
1431:
1432: QTAILQ_INSERT_TAIL(&hostdevs, s, next);
1433: s->exit.notify = usb_host_exit_notifier;
1434: qemu_add_exit_notifier(&s->exit);
1435: usb_host_auto_check(NULL);
1436:
1437: if (s->match.bus_num != 0 && s->match.port != NULL) {
1438: usb_host_claim_port(s);
1439: }
1440: add_boot_device_path(s->bootindex, &dev->qdev, NULL);
1441: return 0;
1442: }
1443:
1444: static const VMStateDescription vmstate_usb_host = {
1445: .name = "usb-host",
1446: .unmigratable = 1,
1447: };
1448:
1449: static Property usb_host_dev_properties[] = {
1450: DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1451: DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1452: DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
1453: DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0),
1454: DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0),
1455: DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
1456: DEFINE_PROP_INT32("bootindex", USBHostDevice, bootindex, -1),
1457: DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
1458: USB_HOST_OPT_PIPELINE, true),
1459: DEFINE_PROP_END_OF_LIST(),
1460: };
1461:
1462: static void usb_host_class_initfn(ObjectClass *klass, void *data)
1463: {
1464: DeviceClass *dc = DEVICE_CLASS(klass);
1465: USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
1466:
1467: uc->init = usb_host_initfn;
1468: uc->product_desc = "USB Host Device";
1469: uc->cancel_packet = usb_host_async_cancel;
1470: uc->handle_data = usb_host_handle_data;
1471: uc->handle_control = usb_host_handle_control;
1472: uc->handle_reset = usb_host_handle_reset;
1473: uc->handle_destroy = usb_host_handle_destroy;
1474: dc->vmsd = &vmstate_usb_host;
1475: dc->props = usb_host_dev_properties;
1476: }
1477:
1478: static TypeInfo usb_host_dev_info = {
1479: .name = "usb-host",
1480: .parent = TYPE_USB_DEVICE,
1481: .instance_size = sizeof(USBHostDevice),
1482: .class_init = usb_host_class_initfn,
1483: };
1484:
1485: static void usb_host_register_types(void)
1486: {
1487: type_register_static(&usb_host_dev_info);
1488: usb_legacy_register("usb-host", "host", usb_host_device_open);
1489: }
1490:
1491: type_init(usb_host_register_types)
1492:
1493: USBDevice *usb_host_device_open(USBBus *bus, const char *devname)
1494: {
1495: struct USBAutoFilter filter;
1496: USBDevice *dev;
1497: char *p;
1498:
1499: dev = usb_create(bus, "usb-host");
1500:
1501: if (strstr(devname, "auto:")) {
1502: if (parse_filter(devname, &filter) < 0) {
1503: goto fail;
1504: }
1505: } else {
1506: if ((p = strchr(devname, '.'))) {
1507: filter.bus_num = strtoul(devname, NULL, 0);
1508: filter.addr = strtoul(p + 1, NULL, 0);
1509: filter.vendor_id = 0;
1510: filter.product_id = 0;
1511: } else if ((p = strchr(devname, ':'))) {
1512: filter.bus_num = 0;
1513: filter.addr = 0;
1514: filter.vendor_id = strtoul(devname, NULL, 16);
1515: filter.product_id = strtoul(p + 1, NULL, 16);
1516: } else {
1517: goto fail;
1518: }
1519: }
1520:
1521: qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num);
1522: qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr);
1523: qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
1524: qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
1525: qdev_init_nofail(&dev->qdev);
1526: return dev;
1527:
1528: fail:
1529: qdev_free(&dev->qdev);
1530: return NULL;
1531: }
1532:
1533: int usb_host_device_close(const char *devname)
1534: {
1535: #if 0
1536: char product_name[PRODUCT_NAME_SZ];
1537: int bus_num, addr;
1538: USBHostDevice *s;
1539:
1540: if (strstr(devname, "auto:")) {
1541: return usb_host_auto_del(devname);
1542: }
1543: if (usb_host_find_device(&bus_num, &addr, product_name,
1544: sizeof(product_name), devname) < 0) {
1545: return -1;
1546: }
1547: s = hostdev_find(bus_num, addr);
1548: if (s) {
1549: usb_device_delete_addr(s->bus_num, s->dev.addr);
1550: return 0;
1551: }
1552: #endif
1553:
1554: return -1;
1555: }
1556:
1557: /*
1558: * Read sys file-system device file
1559: *
1560: * @line address of buffer to put file contents in
1561: * @line_size size of line
1562: * @device_file path to device file (printf format string)
1563: * @device_name device being opened (inserted into device_file)
1564: *
1565: * @return 0 failed, 1 succeeded ('line' contains data)
1566: */
1567: static int usb_host_read_file(char *line, size_t line_size,
1568: const char *device_file, const char *device_name)
1569: {
1570: FILE *f;
1571: int ret = 0;
1572: char filename[PATH_MAX];
1573:
1574: snprintf(filename, PATH_MAX, "/sys/bus/usb/devices/%s/%s", device_name,
1575: device_file);
1576: f = fopen(filename, "r");
1577: if (f) {
1578: ret = fgets(line, line_size, f) != NULL;
1579: fclose(f);
1580: }
1581:
1582: return ret;
1583: }
1584:
1585: /*
1586: * Use /sys/bus/usb/devices/ directory to determine host's USB
1587: * devices.
1588: *
1589: * This code is based on Robert Schiele's original patches posted to
1590: * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
1591: */
1592: static int usb_host_scan(void *opaque, USBScanFunc *func)
1593: {
1594: DIR *dir = NULL;
1595: char line[1024];
1596: int bus_num, addr, speed, class_id, product_id, vendor_id;
1597: int ret = 0;
1598: char port[MAX_PORTLEN];
1599: char product_name[512];
1600: struct dirent *de;
1601:
1602: dir = opendir("/sys/bus/usb/devices");
1603: if (!dir) {
1604: perror("husb: opendir /sys/bus/usb/devices");
1605: fprintf(stderr, "husb: please make sure sysfs is mounted at /sys\n");
1606: goto the_end;
1607: }
1608:
1609: while ((de = readdir(dir))) {
1610: if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
1611: if (sscanf(de->d_name, "%d-%7[0-9.]", &bus_num, port) < 2) {
1612: continue;
1613: }
1614:
1615: if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) {
1616: goto the_end;
1617: }
1618: if (sscanf(line, "%d", &addr) != 1) {
1619: goto the_end;
1620: }
1621: if (!usb_host_read_file(line, sizeof(line), "bDeviceClass",
1622: de->d_name)) {
1623: goto the_end;
1624: }
1625: if (sscanf(line, "%x", &class_id) != 1) {
1626: goto the_end;
1627: }
1628:
1629: if (!usb_host_read_file(line, sizeof(line), "idVendor",
1630: de->d_name)) {
1631: goto the_end;
1632: }
1633: if (sscanf(line, "%x", &vendor_id) != 1) {
1634: goto the_end;
1635: }
1636: if (!usb_host_read_file(line, sizeof(line), "idProduct",
1637: de->d_name)) {
1638: goto the_end;
1639: }
1640: if (sscanf(line, "%x", &product_id) != 1) {
1641: goto the_end;
1642: }
1643: if (!usb_host_read_file(line, sizeof(line), "product",
1644: de->d_name)) {
1645: *product_name = 0;
1646: } else {
1647: if (strlen(line) > 0) {
1648: line[strlen(line) - 1] = '\0';
1649: }
1650: pstrcpy(product_name, sizeof(product_name), line);
1651: }
1652:
1653: if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) {
1654: goto the_end;
1655: }
1656: if (!strcmp(line, "5000\n")) {
1657: speed = USB_SPEED_SUPER;
1658: } else if (!strcmp(line, "480\n")) {
1659: speed = USB_SPEED_HIGH;
1660: } else if (!strcmp(line, "1.5\n")) {
1661: speed = USB_SPEED_LOW;
1662: } else {
1663: speed = USB_SPEED_FULL;
1664: }
1665:
1666: ret = func(opaque, bus_num, addr, port, class_id, vendor_id,
1667: product_id, product_name, speed);
1668: if (ret) {
1669: goto the_end;
1670: }
1671: }
1672: }
1673: the_end:
1674: if (dir) {
1675: closedir(dir);
1676: }
1677: return ret;
1678: }
1679:
1680: static QEMUTimer *usb_auto_timer;
1681:
1682: static int usb_host_auto_scan(void *opaque, int bus_num,
1683: int addr, const char *port,
1684: int class_id, int vendor_id, int product_id,
1685: const char *product_name, int speed)
1686: {
1687: struct USBAutoFilter *f;
1688: struct USBHostDevice *s;
1689:
1690: /* Ignore hubs */
1691: if (class_id == 9)
1692: return 0;
1693:
1694: QTAILQ_FOREACH(s, &hostdevs, next) {
1695: f = &s->match;
1696:
1697: if (f->bus_num > 0 && f->bus_num != bus_num) {
1698: continue;
1699: }
1700: if (f->addr > 0 && f->addr != addr) {
1701: continue;
1702: }
1703: if (f->port != NULL && (port == NULL || strcmp(f->port, port) != 0)) {
1704: continue;
1705: }
1706:
1707: if (f->vendor_id > 0 && f->vendor_id != vendor_id) {
1708: continue;
1709: }
1710:
1711: if (f->product_id > 0 && f->product_id != product_id) {
1712: continue;
1713: }
1714: /* We got a match */
1715: s->seen++;
1716: if (s->errcount >= 3) {
1717: return 0;
1718: }
1719:
1720: /* Already attached ? */
1721: if (s->fd != -1) {
1722: return 0;
1723: }
1724: DPRINTF("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
1725:
1726: if (usb_host_open(s, bus_num, addr, port, product_name, speed) < 0) {
1727: s->errcount++;
1728: }
1729: break;
1730: }
1731:
1732: return 0;
1733: }
1734:
1735: static void usb_host_auto_check(void *unused)
1736: {
1737: struct USBHostDevice *s;
1738: int unconnected = 0;
1739:
1740: usb_host_scan(NULL, usb_host_auto_scan);
1741:
1742: QTAILQ_FOREACH(s, &hostdevs, next) {
1743: if (s->fd == -1) {
1744: unconnected++;
1745: }
1746: if (s->seen == 0) {
1747: s->errcount = 0;
1748: }
1749: s->seen = 0;
1750: }
1751:
1752: if (unconnected == 0) {
1753: /* nothing to watch */
1754: if (usb_auto_timer) {
1755: qemu_del_timer(usb_auto_timer);
1756: trace_usb_host_auto_scan_disabled();
1757: }
1758: return;
1759: }
1760:
1761: if (!usb_auto_timer) {
1762: usb_auto_timer = qemu_new_timer_ms(rt_clock, usb_host_auto_check, NULL);
1763: if (!usb_auto_timer) {
1764: return;
1765: }
1766: trace_usb_host_auto_scan_enabled();
1767: }
1768: qemu_mod_timer(usb_auto_timer, qemu_get_clock_ms(rt_clock) + 2000);
1769: }
1770:
1771: /*
1772: * Autoconnect filter
1773: * Format:
1774: * auto:bus:dev[:vid:pid]
1775: * auto:bus.dev[:vid:pid]
1776: *
1777: * bus - bus number (dec, * means any)
1778: * dev - device number (dec, * means any)
1779: * vid - vendor id (hex, * means any)
1780: * pid - product id (hex, * means any)
1781: *
1782: * See 'lsusb' output.
1783: */
1784: static int parse_filter(const char *spec, struct USBAutoFilter *f)
1785: {
1786: enum { BUS, DEV, VID, PID, DONE };
1787: const char *p = spec;
1788: int i;
1789:
1790: f->bus_num = 0;
1791: f->addr = 0;
1792: f->vendor_id = 0;
1793: f->product_id = 0;
1794:
1795: for (i = BUS; i < DONE; i++) {
1796: p = strpbrk(p, ":.");
1797: if (!p) {
1798: break;
1799: }
1800: p++;
1801:
1802: if (*p == '*') {
1803: continue;
1804: }
1805: switch(i) {
1806: case BUS: f->bus_num = strtol(p, NULL, 10); break;
1807: case DEV: f->addr = strtol(p, NULL, 10); break;
1808: case VID: f->vendor_id = strtol(p, NULL, 16); break;
1809: case PID: f->product_id = strtol(p, NULL, 16); break;
1810: }
1811: }
1812:
1813: if (i < DEV) {
1814: fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
1815: return -1;
1816: }
1817:
1818: return 0;
1819: }
1820:
1821: /**********************/
1822: /* USB host device info */
1823:
1824: struct usb_class_info {
1825: int class;
1826: const char *class_name;
1827: };
1828:
1829: static const struct usb_class_info usb_class_info[] = {
1830: { USB_CLASS_AUDIO, "Audio"},
1831: { USB_CLASS_COMM, "Communication"},
1832: { USB_CLASS_HID, "HID"},
1833: { USB_CLASS_HUB, "Hub" },
1834: { USB_CLASS_PHYSICAL, "Physical" },
1835: { USB_CLASS_PRINTER, "Printer" },
1836: { USB_CLASS_MASS_STORAGE, "Storage" },
1837: { USB_CLASS_CDC_DATA, "Data" },
1838: { USB_CLASS_APP_SPEC, "Application Specific" },
1839: { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
1840: { USB_CLASS_STILL_IMAGE, "Still Image" },
1841: { USB_CLASS_CSCID, "Smart Card" },
1842: { USB_CLASS_CONTENT_SEC, "Content Security" },
1843: { -1, NULL }
1844: };
1845:
1846: static const char *usb_class_str(uint8_t class)
1847: {
1848: const struct usb_class_info *p;
1849: for(p = usb_class_info; p->class != -1; p++) {
1850: if (p->class == class) {
1851: break;
1852: }
1853: }
1854: return p->class_name;
1855: }
1856:
1857: static void usb_info_device(Monitor *mon, int bus_num,
1858: int addr, const char *port,
1859: int class_id, int vendor_id, int product_id,
1860: const char *product_name,
1861: int speed)
1862: {
1863: const char *class_str, *speed_str;
1864:
1865: switch(speed) {
1866: case USB_SPEED_LOW:
1867: speed_str = "1.5";
1868: break;
1869: case USB_SPEED_FULL:
1870: speed_str = "12";
1871: break;
1872: case USB_SPEED_HIGH:
1873: speed_str = "480";
1874: break;
1875: case USB_SPEED_SUPER:
1876: speed_str = "5000";
1877: break;
1878: default:
1879: speed_str = "?";
1880: break;
1881: }
1882:
1883: monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
1884: bus_num, addr, port, speed_str);
1885: class_str = usb_class_str(class_id);
1886: if (class_str) {
1887: monitor_printf(mon, " %s:", class_str);
1888: } else {
1889: monitor_printf(mon, " Class %02x:", class_id);
1890: }
1891: monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
1892: if (product_name[0] != '\0') {
1893: monitor_printf(mon, ", %s", product_name);
1894: }
1895: monitor_printf(mon, "\n");
1896: }
1897:
1898: static int usb_host_info_device(void *opaque, int bus_num, int addr,
1899: const char *path, int class_id,
1900: int vendor_id, int product_id,
1901: const char *product_name,
1902: int speed)
1903: {
1904: Monitor *mon = opaque;
1905:
1906: usb_info_device(mon, bus_num, addr, path, class_id, vendor_id, product_id,
1907: product_name, speed);
1908: return 0;
1909: }
1910:
1911: static void dec2str(int val, char *str, size_t size)
1912: {
1913: if (val == 0) {
1914: snprintf(str, size, "*");
1915: } else {
1916: snprintf(str, size, "%d", val);
1917: }
1918: }
1919:
1920: static void hex2str(int val, char *str, size_t size)
1921: {
1922: if (val == 0) {
1923: snprintf(str, size, "*");
1924: } else {
1925: snprintf(str, size, "%04x", val);
1926: }
1927: }
1928:
1929: void usb_host_info(Monitor *mon)
1930: {
1931: struct USBAutoFilter *f;
1932: struct USBHostDevice *s;
1933:
1934: usb_host_scan(mon, usb_host_info_device);
1935:
1936: if (QTAILQ_EMPTY(&hostdevs)) {
1937: return;
1938: }
1939:
1940: monitor_printf(mon, " Auto filters:\n");
1941: QTAILQ_FOREACH(s, &hostdevs, next) {
1942: char bus[10], addr[10], vid[10], pid[10];
1943: f = &s->match;
1944: dec2str(f->bus_num, bus, sizeof(bus));
1945: dec2str(f->addr, addr, sizeof(addr));
1946: hex2str(f->vendor_id, vid, sizeof(vid));
1947: hex2str(f->product_id, pid, sizeof(pid));
1948: monitor_printf(mon, " Bus %s, Addr %s, Port %s, ID %s:%s\n",
1949: bus, addr, f->port ? f->port : "*", vid, pid);
1950: }
1951: }
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