summaryrefslogtreecommitdiff
path: root/usb-bsd.c
blob: 5becea561333a7703e557ae1a0a5f19bc88cd86c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
/*
 * BSD host USB redirector
 *
 * Copyright (c) 2006 Lonnie Mendez
 * Portions of code and concepts borrowed from
 * usb-linux.c and libusb's bsd.c and are copyright their respective owners.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "qemu-common.h"
#include "monitor.h"
#include "hw/usb.h"

/* usb.h declares these */
#undef USB_SPEED_HIGH
#undef USB_SPEED_FULL
#undef USB_SPEED_LOW

#include <sys/ioctl.h>
#ifndef __DragonFly__
#include <dev/usb/usb.h>
#else
#include <bus/usb/usb.h>
#endif
#include <signal.h>

/* This value has maximum potential at 16.
 * You should also set hw.usb.debug to gain
 * more detailed view.
 */
//#define DEBUG
#define UGEN_DEBUG_LEVEL 0


typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
                        int vendor_id, int product_id,
                        const char *product_name, int speed);
static int usb_host_find_device(int *pbus_num, int *paddr,
                                const char *devname);

typedef struct USBHostDevice {
    USBDevice dev;
    int ep_fd[USB_MAX_ENDPOINTS];
    int devfd;
    char devpath[32];
} USBHostDevice;


static int ensure_ep_open(USBHostDevice *dev, int ep, int mode)
{
    char buf[32];
    int fd;

    /* Get the address for this endpoint */
    ep = UE_GET_ADDR(ep);

    if (dev->ep_fd[ep] < 0) {
#if defined(__FreeBSD__) || defined(__DragonFly__)
        snprintf(buf, sizeof(buf) - 1, "%s.%d", dev->devpath, ep);
#else
        snprintf(buf, sizeof(buf) - 1, "%s.%02d", dev->devpath, ep);
#endif
        /* Try to open it O_RDWR first for those devices which have in and out
         * endpoints with the same address (eg 0x02 and 0x82)
         */
        fd = open(buf, O_RDWR);
        if (fd < 0 && errno == ENXIO)
            fd = open(buf, mode);
        if (fd < 0) {
#ifdef DEBUG
            printf("ensure_ep_open: failed to open device endpoint %s: %s\n",
                   buf, strerror(errno));
#endif
        }
        dev->ep_fd[ep] = fd;
    }

    return dev->ep_fd[ep];
}

static void ensure_eps_closed(USBHostDevice *dev)
{
    int epnum = 1;

    if (!dev)
        return;

    while (epnum < USB_MAX_ENDPOINTS) {
        if (dev->ep_fd[epnum] >= 0) {
            close(dev->ep_fd[epnum]);
            dev->ep_fd[epnum] = -1;
        }
        epnum++;
    }
}

static void usb_host_handle_reset(USBDevice *dev)
{
#if 0
    USBHostDevice *s = (USBHostDevice *)dev;
#endif
}

/* XXX:
 * -check device states against transfer requests
 *  and return appropriate response
 */
static int usb_host_handle_control(USBDevice *dev,
                                   int request,
                                   int value,
                                   int index,
                                   int length,
                                   uint8_t *data)
{
    USBHostDevice *s = (USBHostDevice *)dev;
    struct usb_ctl_request req;
    struct usb_alt_interface aiface;
    int ret, timeout = 50;

    if ((request >> 8) == UT_WRITE_DEVICE &&
        (request & 0xff) == UR_SET_ADDRESS) {

        /* specific SET_ADDRESS support */
        dev->addr = value;
        return 0;
    } else if ((request >> 8) == UT_WRITE_DEVICE &&
               (request & 0xff) == UR_SET_CONFIG) {

        ensure_eps_closed(s); /* can't do this without all eps closed */

        ret = ioctl(s->devfd, USB_SET_CONFIG, &value);
        if (ret < 0) {
#ifdef DEBUG
            printf("handle_control: failed to set configuration - %s\n",
                   strerror(errno));
#endif
            return USB_RET_STALL;
        }

        return 0;
    } else if ((request >> 8) == UT_WRITE_INTERFACE &&
               (request & 0xff) == UR_SET_INTERFACE) {

        aiface.uai_interface_index = index;
        aiface.uai_alt_no = value;

        ensure_eps_closed(s); /* can't do this without all eps closed */
        ret = ioctl(s->devfd, USB_SET_ALTINTERFACE, &aiface);
        if (ret < 0) {
#ifdef DEBUG
            printf("handle_control: failed to set alternate interface - %s\n",
                   strerror(errno));
#endif
            return USB_RET_STALL;
        }

        return 0;
    } else {
        req.ucr_request.bmRequestType = request >> 8;
        req.ucr_request.bRequest = request & 0xff;
        USETW(req.ucr_request.wValue, value);
        USETW(req.ucr_request.wIndex, index);
        USETW(req.ucr_request.wLength, length);
        req.ucr_data = data;
        req.ucr_flags = USBD_SHORT_XFER_OK;

        ret = ioctl(s->devfd, USB_SET_TIMEOUT, &timeout);
#if defined(__NetBSD__) || defined(__OpenBSD__)
        if (ret < 0 && errno != EINVAL) {
#else
        if (ret < 0) {
#endif
#ifdef DEBUG
            printf("handle_control: setting timeout failed - %s\n",
                   strerror(errno));
#endif
        }

        ret = ioctl(s->devfd, USB_DO_REQUEST, &req);
        /* ugen returns EIO for usbd_do_request_ no matter what
         * happens with the transfer */
        if (ret < 0) {
#ifdef DEBUG
            printf("handle_control: error after request - %s\n",
                   strerror(errno));
#endif
            return USB_RET_NAK; // STALL
        } else {
            return req.ucr_actlen;
        }
    }
}

static int usb_host_handle_data(USBDevice *dev, USBPacket *p)
{
    USBHostDevice *s = (USBHostDevice *)dev;
    int ret, fd, mode;
    int one = 1, shortpacket = 0, timeout = 50;
    sigset_t new_mask, old_mask;
    uint8_t devep = p->devep;

    /* protect data transfers from SIGALRM signal */
    sigemptyset(&new_mask);
    sigaddset(&new_mask, SIGALRM);
    sigprocmask(SIG_BLOCK, &new_mask, &old_mask);

    if (p->pid == USB_TOKEN_IN) {
        devep |= 0x80;
        mode = O_RDONLY;
        shortpacket = 1;
    } else {
        mode = O_WRONLY;
    }

    fd = ensure_ep_open(s, devep, mode);
    if (fd < 0) {
        sigprocmask(SIG_SETMASK, &old_mask, NULL);
        return USB_RET_NODEV;
    }

    if (ioctl(fd, USB_SET_TIMEOUT, &timeout) < 0) {
#ifdef DEBUG
        printf("handle_data: failed to set timeout - %s\n",
               strerror(errno));
#endif
    }

    if (shortpacket) {
        if (ioctl(fd, USB_SET_SHORT_XFER, &one) < 0) {
#ifdef DEBUG
            printf("handle_data: failed to set short xfer mode - %s\n",
                   strerror(errno));
#endif
            sigprocmask(SIG_SETMASK, &old_mask, NULL);
        }
    }

    if (p->pid == USB_TOKEN_IN)
        ret = read(fd, p->data, p->len);
    else
        ret = write(fd, p->data, p->len);

    sigprocmask(SIG_SETMASK, &old_mask, NULL);

    if (ret < 0) {
#ifdef DEBUG
        printf("handle_data: error after %s data - %s\n",
               pid == USB_TOKEN_IN ? "reading" : "writing", strerror(errno));
#endif
        switch(errno) {
        case ETIMEDOUT:
        case EINTR:
            return USB_RET_NAK;
        default:
            return USB_RET_STALL;
        }
    } else {
        return ret;
    }
}

static void usb_host_handle_destroy(USBDevice *opaque)
{
    USBHostDevice *s = (USBHostDevice *)opaque;
    int i;

    for (i = 0; i < USB_MAX_ENDPOINTS; i++)
        if (s->ep_fd[i] >= 0)
            close(s->ep_fd[i]);

    if (s->devfd < 0)
        return;

    close(s->devfd);

    qemu_free(s);
}

USBDevice *usb_host_device_open(const char *devname)
{
    struct usb_device_info bus_info, dev_info;
    USBHostDevice *dev;
    char ctlpath[PATH_MAX + 1];
    char buspath[PATH_MAX + 1];
    int bfd, dfd, bus, address, i;
    int ugendebug = UGEN_DEBUG_LEVEL;

    if (usb_host_find_device(&bus, &address, devname) < 0)
        return NULL;

    snprintf(buspath, PATH_MAX, "/dev/usb%d", bus);

    bfd = open(buspath, O_RDWR);
    if (bfd < 0) {
#ifdef DEBUG
        printf("usb_host_device_open: failed to open usb bus - %s\n",
               strerror(errno));
#endif
        return NULL;
    }

    bus_info.udi_addr = address;
    if (ioctl(bfd, USB_DEVICEINFO, &bus_info) < 0) {
#ifdef DEBUG
        printf("usb_host_device_open: failed to grab bus information - %s\n",
               strerror(errno));
#endif
        return NULL;
    }

#if defined(__FreeBSD__) || defined(__DragonFly__)
    snprintf(ctlpath, PATH_MAX, "/dev/%s", bus_info.udi_devnames[0]);
#else
    snprintf(ctlpath, PATH_MAX, "/dev/%s.00", bus_info.udi_devnames[0]);
#endif

    dfd  = open(ctlpath, O_RDWR);
    if (dfd < 0) {
        dfd = open(ctlpath, O_RDONLY);
        if (dfd < 0) {
#ifdef DEBUG
            printf("usb_host_device_open: failed to open usb device %s - %s\n",
                   ctlpath, strerror(errno));
#endif
        }
    }

    if (dfd >= 0) {
        dev = qemu_mallocz(sizeof(USBHostDevice));
        dev->devfd = dfd;

        if (ioctl(dfd, USB_GET_DEVICEINFO, &dev_info) < 0) {
#ifdef DEBUG
            printf("usb_host_device_open: failed to grab device info - %s\n",
                   strerror(errno));
#endif
            goto fail;
        }

        if (dev_info.udi_speed == 1)
            dev->dev.speed = USB_SPEED_LOW - 1;
        else
            dev->dev.speed = USB_SPEED_FULL - 1;

        dev->dev.handle_packet = usb_generic_handle_packet;

        dev->dev.handle_reset = usb_host_handle_reset;
        dev->dev.handle_control = usb_host_handle_control;
        dev->dev.handle_data = usb_host_handle_data;
        dev->dev.handle_destroy = usb_host_handle_destroy;

        if (strncmp(dev_info.udi_product, "product", 7) != 0)
            pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
                    dev_info.udi_product);
        else
            snprintf(dev->dev.devname, sizeof(dev->dev.devname),
                     "host:%s", devname);

        pstrcpy(dev->devpath, sizeof(dev->devpath), "/dev/");
        pstrcat(dev->devpath, sizeof(dev->devpath), dev_info.udi_devnames[0]);

        /* Mark the endpoints as not yet open */
        for (i = 0; i < USB_MAX_ENDPOINTS; i++)
           dev->ep_fd[i] = -1;

        ioctl(dfd, USB_SETDEBUG, &ugendebug);

        return (USBDevice *)dev;
    }

fail:
    return NULL;
}

static int usb_host_scan(void *opaque, USBScanFunc *func)
{
    struct usb_device_info bus_info;
    struct usb_device_info dev_info;
    uint16_t vendor_id, product_id, class_id, speed;
    int bfd, dfd, bus, address;
    char busbuf[20], devbuf[20], product_name[256];
    int ret = 0;

    for (bus = 0; bus < 10; bus++) {

        snprintf(busbuf, sizeof(busbuf) - 1, "/dev/usb%d", bus);
        bfd = open(busbuf, O_RDWR);
        if (bfd < 0)
	    continue;

        for (address = 1; address < 127; address++) {

            bus_info.udi_addr = address;
            if (ioctl(bfd, USB_DEVICEINFO, &bus_info) < 0)
                continue;

            /* only list devices that can be used by generic layer */
            if (strncmp(bus_info.udi_devnames[0], "ugen", 4) != 0)
                continue;

#if defined(__FreeBSD__) || defined(__DragonFly__)
            snprintf(devbuf, sizeof(devbuf) - 1, "/dev/%s", bus_info.udi_devnames[0]);
#else
            snprintf(devbuf, sizeof(devbuf) - 1, "/dev/%s.00", bus_info.udi_devnames[0]);
#endif

            dfd = open(devbuf, O_RDONLY);
            if (dfd < 0) {
#ifdef DEBUG
                printf("usb_host_scan: couldn't open device %s - %s\n", devbuf,
                       strerror(errno));
#endif
                continue;
            }

            if (ioctl(dfd, USB_GET_DEVICEINFO, &dev_info) < 0)
                printf("usb_host_scan: couldn't get device information for %s - %s\n",
                       devbuf, strerror(errno));

            // XXX: might need to fixup endianess of word values before copying over

            vendor_id = dev_info.udi_vendorNo;
            product_id = dev_info.udi_productNo;
            class_id = dev_info.udi_class;
            speed = dev_info.udi_speed;

            if (strncmp(dev_info.udi_product, "product", 7) != 0)
                pstrcpy(product_name, sizeof(product_name),
                        dev_info.udi_product);
            else
                product_name[0] = '\0';

            ret = func(opaque, bus, address, class_id, vendor_id,
                       product_id, product_name, speed);

            close(dfd);

            if (ret)
                goto the_end;
        }

        close(bfd);
    }

the_end:
    return ret;
}

typedef struct FindDeviceState {
    int vendor_id;
    int product_id;
    int bus_num;
    int addr;
} FindDeviceState;

static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
                                     int class_id,
                                     int vendor_id, int product_id,
                                     const char *product_name, int speed)
{
    FindDeviceState *s = opaque;
    if (vendor_id == s->vendor_id &&
        product_id == s->product_id) {
        s->bus_num = bus_num;
        s->addr = addr;
        return 1;
     } else {
        return 0;
     }
}


/* the syntax is :
   'bus.addr' (decimal numbers) or
   'vendor_id:product_id' (hexa numbers) */
static int usb_host_find_device(int *pbus_num, int *paddr,
                                const char *devname)
{
    const char *p;
    int ret;
    FindDeviceState fs;

    p = strchr(devname, '.');
    if (p) {
        *pbus_num = strtoul(devname, NULL, 0);
        *paddr = strtoul(p + 1, NULL, 0);
        return 0;
    }
    p = strchr(devname, ':');
    if (p) {
        fs.vendor_id = strtoul(devname, NULL, 16);
        fs.product_id = strtoul(p + 1, NULL, 16);
        ret = usb_host_scan(&fs, usb_host_find_device_scan);
        if (ret) {
            *pbus_num = fs.bus_num;
            *paddr = fs.addr;
            return 0;
        }
     }
     return -1;
}

/**********************/
/* USB host device info */

struct usb_class_info {
    int class;
    const char *class_name;
};

static const struct usb_class_info usb_class_info[] = {
    { USB_CLASS_AUDIO, "Audio"},
    { USB_CLASS_COMM, "Communication"},
    { USB_CLASS_HID, "HID"},
    { USB_CLASS_HUB, "Hub" },
    { USB_CLASS_PHYSICAL, "Physical" },
    { USB_CLASS_PRINTER, "Printer" },
    { USB_CLASS_MASS_STORAGE, "Storage" },
    { USB_CLASS_CDC_DATA, "Data" },
    { USB_CLASS_APP_SPEC, "Application Specific" },
    { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
    { USB_CLASS_STILL_IMAGE, "Still Image" },
    { USB_CLASS_CSCID, "Smart Card" },
    { USB_CLASS_CONTENT_SEC, "Content Security" },
    { -1, NULL }
};

static const char *usb_class_str(uint8_t class)
{
    const struct usb_class_info *p;
    for (p = usb_class_info; p->class != -1; p++) {
        if (p->class == class)
            break;
    }
    return p->class_name;
}

static void usb_info_device(int bus_num, int addr, int class_id,
                            int vendor_id, int product_id,
                            const char *product_name,
                            int speed)
{
    const char *class_str, *speed_str;
    Monitor *mon = cur_mon;

    switch(speed) {
    case USB_SPEED_LOW:
        speed_str = "1.5";
        break;
    case USB_SPEED_FULL:
        speed_str = "12";
        break;
    case USB_SPEED_HIGH:
        speed_str = "480";
        break;
    default:
        speed_str = "?";
        break;
    }

    monitor_printf(mon, "  Device %d.%d, speed %s Mb/s\n",
                   bus_num, addr, speed_str);
    class_str = usb_class_str(class_id);
    if (class_str)
        monitor_printf(mon, "    %s:", class_str);
    else
        monitor_printf(mon, "    Class %02x:", class_id);
    monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
    if (product_name[0] != '\0')
        monitor_printf(mon, ", %s", product_name);
    monitor_printf(mon, "\n");
}

static int usb_host_info_device(void *opaque,
                                int bus_num, int addr,
                                int class_id,
                                int vendor_id, int product_id,
                                const char *product_name,
                                int speed)
{
    usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
                    product_name, speed);
    return 0;
}

void usb_host_info(Monitor *mon)
{
    usb_host_scan(NULL, usb_host_info_device);
}

/* XXX add this */
int usb_host_device_close(const char *devname)
{
    return 0;
}