![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to usb-hub.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu / hw|
Return to usb-hub.c CVS log | Up to [Qemu by Fabrice Bellard] / qemu / hw |
1.1 root 1: /*
2: * QEMU USB HUB emulation
3: *
4: * Copyright (c) 2005 Fabrice Bellard
1.1.1.4 root 5: *
1.1 root 6: * Permission is hereby granted, free of charge, to any person obtaining a copy
7: * of this software and associated documentation files (the "Software"), to deal
8: * in the Software without restriction, including without limitation the rights
9: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10: * copies of the Software, and to permit persons to whom the Software is
11: * furnished to do so, subject to the following conditions:
12: *
13: * The above copyright notice and this permission notice shall be included in
14: * all copies or substantial portions of the Software.
15: *
16: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17: * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19: * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21: * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22: * THE SOFTWARE.
23: */
1.1.1.4 root 24: #include "qemu-common.h"
25: #include "usb.h"
1.1.1.8 root 26: #include "usb-desc.h"
1.1 root 27:
28: //#define DEBUG
29:
1.1.1.8 root 30: #define NUM_PORTS 8
1.1 root 31:
32: typedef struct USBHubPort {
33: USBPort port;
34: uint16_t wPortStatus;
35: uint16_t wPortChange;
36: } USBHubPort;
37:
38: typedef struct USBHubState {
39: USBDevice dev;
1.1.1.8 root 40: USBHubPort ports[NUM_PORTS];
1.1 root 41: } USBHubState;
42:
43: #define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE)
44: #define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE)
45: #define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR)
46: #define GetHubStatus (0xa000 | USB_REQ_GET_STATUS)
47: #define GetPortStatus (0xa300 | USB_REQ_GET_STATUS)
48: #define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE)
49: #define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE)
50:
51: #define PORT_STAT_CONNECTION 0x0001
52: #define PORT_STAT_ENABLE 0x0002
53: #define PORT_STAT_SUSPEND 0x0004
54: #define PORT_STAT_OVERCURRENT 0x0008
55: #define PORT_STAT_RESET 0x0010
56: #define PORT_STAT_POWER 0x0100
57: #define PORT_STAT_LOW_SPEED 0x0200
58: #define PORT_STAT_HIGH_SPEED 0x0400
59: #define PORT_STAT_TEST 0x0800
60: #define PORT_STAT_INDICATOR 0x1000
61:
62: #define PORT_STAT_C_CONNECTION 0x0001
63: #define PORT_STAT_C_ENABLE 0x0002
64: #define PORT_STAT_C_SUSPEND 0x0004
65: #define PORT_STAT_C_OVERCURRENT 0x0008
66: #define PORT_STAT_C_RESET 0x0010
67:
68: #define PORT_CONNECTION 0
69: #define PORT_ENABLE 1
70: #define PORT_SUSPEND 2
71: #define PORT_OVERCURRENT 3
72: #define PORT_RESET 4
73: #define PORT_POWER 8
74: #define PORT_LOWSPEED 9
75: #define PORT_HIGHSPEED 10
76: #define PORT_C_CONNECTION 16
77: #define PORT_C_ENABLE 17
78: #define PORT_C_SUSPEND 18
79: #define PORT_C_OVERCURRENT 19
80: #define PORT_C_RESET 20
81: #define PORT_TEST 21
82: #define PORT_INDICATOR 22
83:
84: /* same as Linux kernel root hubs */
85:
1.1.1.8 root 86: enum {
87: STR_MANUFACTURER = 1,
88: STR_PRODUCT,
89: STR_SERIALNUMBER,
90: };
91:
92: static const USBDescStrings desc_strings = {
93: [STR_MANUFACTURER] = "QEMU " QEMU_VERSION,
94: [STR_PRODUCT] = "QEMU USB Hub",
95: [STR_SERIALNUMBER] = "314159",
96: };
97:
98: static const USBDescIface desc_iface_hub = {
99: .bInterfaceNumber = 0,
100: .bNumEndpoints = 1,
101: .bInterfaceClass = USB_CLASS_HUB,
102: .eps = (USBDescEndpoint[]) {
103: {
104: .bEndpointAddress = USB_DIR_IN | 0x01,
105: .bmAttributes = USB_ENDPOINT_XFER_INT,
106: .wMaxPacketSize = 1 + (NUM_PORTS + 7) / 8,
107: .bInterval = 0xff,
108: },
109: }
110: };
111:
112: static const USBDescDevice desc_device_hub = {
113: .bcdUSB = 0x0110,
114: .bDeviceClass = USB_CLASS_HUB,
115: .bMaxPacketSize0 = 8,
116: .bNumConfigurations = 1,
117: .confs = (USBDescConfig[]) {
118: {
119: .bNumInterfaces = 1,
120: .bConfigurationValue = 1,
121: .bmAttributes = 0xe0,
1.1.1.9 root 122: .nif = 1,
1.1.1.8 root 123: .ifs = &desc_iface_hub,
124: },
125: },
126: };
127:
128: static const USBDesc desc_hub = {
129: .id = {
1.1.1.10! root 130: .idVendor = 0x0409,
! 131: .idProduct = 0x55aa,
1.1.1.8 root 132: .bcdDevice = 0x0101,
133: .iManufacturer = STR_MANUFACTURER,
134: .iProduct = STR_PRODUCT,
135: .iSerialNumber = STR_SERIALNUMBER,
136: },
137: .full = &desc_device_hub,
138: .str = desc_strings,
139: };
140:
1.1 root 141: static const uint8_t qemu_hub_hub_descriptor[] =
142: {
1.1.1.2 root 143: 0x00, /* u8 bLength; patched in later */
1.1 root 144: 0x29, /* u8 bDescriptorType; Hub-descriptor */
145: 0x00, /* u8 bNbrPorts; (patched later) */
146: 0x0a, /* u16 wHubCharacteristics; */
147: 0x00, /* (per-port OC, no power switching) */
148: 0x01, /* u8 bPwrOn2pwrGood; 2ms */
149: 0x00 /* u8 bHubContrCurrent; 0 mA */
150:
151: /* DeviceRemovable and PortPwrCtrlMask patched in later */
152: };
153:
1.1.1.8 root 154: static void usb_hub_attach(USBPort *port1)
1.1 root 155: {
156: USBHubState *s = port1->opaque;
157: USBHubPort *port = &s->ports[port1->index];
1.1.1.4 root 158:
1.1.1.8 root 159: port->wPortStatus |= PORT_STAT_CONNECTION;
160: port->wPortChange |= PORT_STAT_C_CONNECTION;
161: if (port->port.dev->speed == USB_SPEED_LOW) {
162: port->wPortStatus |= PORT_STAT_LOW_SPEED;
1.1 root 163: } else {
1.1.1.8 root 164: port->wPortStatus &= ~PORT_STAT_LOW_SPEED;
165: }
1.1.1.10! root 166: usb_wakeup(&s->dev);
1.1.1.8 root 167: }
168:
169: static void usb_hub_detach(USBPort *port1)
170: {
171: USBHubState *s = port1->opaque;
172: USBHubPort *port = &s->ports[port1->index];
173:
1.1.1.10! root 174: usb_wakeup(&s->dev);
! 175:
1.1.1.9 root 176: /* Let upstream know the device on this port is gone */
177: s->dev.port->ops->child_detach(s->dev.port, port1->dev);
178:
1.1.1.8 root 179: port->wPortStatus &= ~PORT_STAT_CONNECTION;
180: port->wPortChange |= PORT_STAT_C_CONNECTION;
181: if (port->wPortStatus & PORT_STAT_ENABLE) {
182: port->wPortStatus &= ~PORT_STAT_ENABLE;
183: port->wPortChange |= PORT_STAT_C_ENABLE;
184: }
185: }
186:
1.1.1.9 root 187: static void usb_hub_child_detach(USBPort *port1, USBDevice *child)
1.1.1.8 root 188: {
1.1.1.9 root 189: USBHubState *s = port1->opaque;
190:
191: /* Pass along upstream */
192: s->dev.port->ops->child_detach(s->dev.port, child);
193: }
194:
195: static void usb_hub_wakeup(USBPort *port1)
196: {
197: USBHubState *s = port1->opaque;
198: USBHubPort *port = &s->ports[port1->index];
1.1.1.8 root 199:
200: if (port->wPortStatus & PORT_STAT_SUSPEND) {
201: port->wPortChange |= PORT_STAT_C_SUSPEND;
202: usb_wakeup(&s->dev);
203: }
204: }
205:
1.1.1.9 root 206: static void usb_hub_complete(USBPort *port, USBPacket *packet)
207: {
208: USBHubState *s = port->opaque;
209:
210: /*
211: * Just pass it along upstream for now.
212: *
1.1.1.10! root 213: * If we ever implement usb 2.0 split transactions this will
1.1.1.9 root 214: * become a little more complicated ...
1.1.1.10! root 215: *
! 216: * Can't use usb_packet_complete() here because packet->owner is
! 217: * cleared already, go call the ->complete() callback directly
! 218: * instead.
1.1.1.9 root 219: */
1.1.1.10! root 220: s->dev.port->ops->complete(s->dev.port, packet);
1.1.1.9 root 221: }
222:
1.1.1.10! root 223: static void usb_hub_handle_reset(USBDevice *dev)
1.1.1.8 root 224: {
225: USBHubState *s = DO_UPCAST(USBHubState, dev, dev);
1.1.1.10! root 226: USBHubPort *port;
1.1.1.8 root 227: int i;
228:
229: for (i = 0; i < NUM_PORTS; i++) {
1.1.1.10! root 230: port = s->ports + i;
! 231: port->wPortStatus = PORT_STAT_POWER;
! 232: port->wPortChange = 0;
! 233: if (port->port.dev && port->port.dev->attached) {
! 234: port->wPortStatus |= PORT_STAT_CONNECTION;
! 235: port->wPortChange |= PORT_STAT_C_CONNECTION;
! 236: if (port->port.dev->speed == USB_SPEED_LOW) {
! 237: port->wPortStatus |= PORT_STAT_LOW_SPEED;
! 238: }
! 239: }
1.1 root 240: }
241: }
242:
1.1.1.9 root 243: static int usb_hub_handle_control(USBDevice *dev, USBPacket *p,
244: int request, int value, int index, int length, uint8_t *data)
1.1 root 245: {
246: USBHubState *s = (USBHubState *)dev;
247: int ret;
248:
1.1.1.9 root 249: ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
1.1.1.8 root 250: if (ret >= 0) {
251: return ret;
252: }
253:
1.1 root 254: switch(request) {
255: case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
256: if (value == 0 && index != 0x81) { /* clear ep halt */
257: goto fail;
258: }
259: ret = 0;
260: break;
261: case DeviceRequest | USB_REQ_GET_INTERFACE:
262: data[0] = 0;
263: ret = 1;
264: break;
265: case DeviceOutRequest | USB_REQ_SET_INTERFACE:
266: ret = 0;
267: break;
268: /* usb specific requests */
269: case GetHubStatus:
270: data[0] = 0;
271: data[1] = 0;
272: data[2] = 0;
273: data[3] = 0;
274: ret = 4;
275: break;
276: case GetPortStatus:
277: {
278: unsigned int n = index - 1;
279: USBHubPort *port;
1.1.1.8 root 280: if (n >= NUM_PORTS) {
1.1 root 281: goto fail;
1.1.1.8 root 282: }
1.1 root 283: port = &s->ports[n];
284: data[0] = port->wPortStatus;
285: data[1] = port->wPortStatus >> 8;
286: data[2] = port->wPortChange;
287: data[3] = port->wPortChange >> 8;
288: ret = 4;
289: }
290: break;
291: case SetHubFeature:
292: case ClearHubFeature:
293: if (value == 0 || value == 1) {
294: } else {
295: goto fail;
296: }
297: ret = 0;
298: break;
299: case SetPortFeature:
300: {
301: unsigned int n = index - 1;
302: USBHubPort *port;
303: USBDevice *dev;
1.1.1.8 root 304: if (n >= NUM_PORTS) {
1.1 root 305: goto fail;
1.1.1.8 root 306: }
1.1 root 307: port = &s->ports[n];
308: dev = port->port.dev;
309: switch(value) {
310: case PORT_SUSPEND:
311: port->wPortStatus |= PORT_STAT_SUSPEND;
312: break;
313: case PORT_RESET:
1.1.1.10! root 314: if (dev && dev->attached) {
1.1.1.3 root 315: usb_send_msg(dev, USB_MSG_RESET);
1.1 root 316: port->wPortChange |= PORT_STAT_C_RESET;
317: /* set enable bit */
318: port->wPortStatus |= PORT_STAT_ENABLE;
319: }
320: break;
321: case PORT_POWER:
322: break;
323: default:
324: goto fail;
325: }
326: ret = 0;
327: }
328: break;
329: case ClearPortFeature:
330: {
331: unsigned int n = index - 1;
332: USBHubPort *port;
1.1.1.7 root 333:
1.1.1.8 root 334: if (n >= NUM_PORTS) {
1.1 root 335: goto fail;
1.1.1.8 root 336: }
1.1 root 337: port = &s->ports[n];
338: switch(value) {
339: case PORT_ENABLE:
340: port->wPortStatus &= ~PORT_STAT_ENABLE;
341: break;
342: case PORT_C_ENABLE:
343: port->wPortChange &= ~PORT_STAT_C_ENABLE;
344: break;
345: case PORT_SUSPEND:
346: port->wPortStatus &= ~PORT_STAT_SUSPEND;
347: break;
348: case PORT_C_SUSPEND:
349: port->wPortChange &= ~PORT_STAT_C_SUSPEND;
350: break;
351: case PORT_C_CONNECTION:
352: port->wPortChange &= ~PORT_STAT_C_CONNECTION;
353: break;
354: case PORT_C_OVERCURRENT:
355: port->wPortChange &= ~PORT_STAT_C_OVERCURRENT;
356: break;
357: case PORT_C_RESET:
358: port->wPortChange &= ~PORT_STAT_C_RESET;
359: break;
360: default:
361: goto fail;
362: }
363: ret = 0;
364: }
365: break;
366: case GetHubDescriptor:
367: {
368: unsigned int n, limit, var_hub_size = 0;
1.1.1.4 root 369: memcpy(data, qemu_hub_hub_descriptor,
1.1 root 370: sizeof(qemu_hub_hub_descriptor));
1.1.1.8 root 371: data[2] = NUM_PORTS;
1.1 root 372:
373: /* fill DeviceRemovable bits */
1.1.1.8 root 374: limit = ((NUM_PORTS + 1 + 7) / 8) + 7;
1.1 root 375: for (n = 7; n < limit; n++) {
376: data[n] = 0x00;
377: var_hub_size++;
378: }
379:
380: /* fill PortPwrCtrlMask bits */
1.1.1.8 root 381: limit = limit + ((NUM_PORTS + 7) / 8);
1.1 root 382: for (;n < limit; n++) {
383: data[n] = 0xff;
384: var_hub_size++;
385: }
386:
387: ret = sizeof(qemu_hub_hub_descriptor) + var_hub_size;
1.1.1.2 root 388: data[0] = ret;
1.1 root 389: break;
390: }
391: default:
392: fail:
393: ret = USB_RET_STALL;
394: break;
395: }
396: return ret;
397: }
398:
1.1.1.3 root 399: static int usb_hub_handle_data(USBDevice *dev, USBPacket *p)
1.1 root 400: {
401: USBHubState *s = (USBHubState *)dev;
402: int ret;
403:
1.1.1.3 root 404: switch(p->pid) {
1.1 root 405: case USB_TOKEN_IN:
1.1.1.3 root 406: if (p->devep == 1) {
1.1 root 407: USBHubPort *port;
408: unsigned int status;
1.1.1.10! root 409: uint8_t buf[4];
1.1 root 410: int i, n;
1.1.1.8 root 411: n = (NUM_PORTS + 1 + 7) / 8;
1.1.1.10! root 412: if (p->iov.size == 1) { /* FreeBSD workaround */
1.1 root 413: n = 1;
1.1.1.10! root 414: } else if (n > p->iov.size) {
1.1 root 415: return USB_RET_BABBLE;
416: }
417: status = 0;
1.1.1.8 root 418: for(i = 0; i < NUM_PORTS; i++) {
1.1 root 419: port = &s->ports[i];
420: if (port->wPortChange)
421: status |= (1 << (i + 1));
422: }
423: if (status != 0) {
424: for(i = 0; i < n; i++) {
1.1.1.10! root 425: buf[i] = status >> (8 * i);
1.1 root 426: }
1.1.1.10! root 427: usb_packet_copy(p, buf, n);
1.1 root 428: ret = n;
429: } else {
430: ret = USB_RET_NAK; /* usb11 11.13.1 */
431: }
432: } else {
433: goto fail;
434: }
435: break;
436: case USB_TOKEN_OUT:
437: default:
438: fail:
439: ret = USB_RET_STALL;
440: break;
441: }
442: return ret;
443: }
444:
1.1.1.3 root 445: static int usb_hub_broadcast_packet(USBHubState *s, USBPacket *p)
1.1 root 446: {
447: USBHubPort *port;
448: USBDevice *dev;
449: int i, ret;
450:
1.1.1.8 root 451: for(i = 0; i < NUM_PORTS; i++) {
1.1 root 452: port = &s->ports[i];
453: dev = port->port.dev;
1.1.1.10! root 454: if (dev && dev->attached && (port->wPortStatus & PORT_STAT_ENABLE)) {
1.1.1.9 root 455: ret = usb_handle_packet(dev, p);
1.1 root 456: if (ret != USB_RET_NODEV) {
457: return ret;
458: }
459: }
460: }
461: return USB_RET_NODEV;
462: }
463:
1.1.1.3 root 464: static int usb_hub_handle_packet(USBDevice *dev, USBPacket *p)
1.1 root 465: {
466: USBHubState *s = (USBHubState *)dev;
467:
468: #if defined(DEBUG) && 0
469: printf("usb_hub: pid=0x%x\n", pid);
470: #endif
471: if (dev->state == USB_STATE_DEFAULT &&
472: dev->addr != 0 &&
1.1.1.3 root 473: p->devaddr != dev->addr &&
1.1.1.4 root 474: (p->pid == USB_TOKEN_SETUP ||
475: p->pid == USB_TOKEN_OUT ||
1.1.1.3 root 476: p->pid == USB_TOKEN_IN)) {
1.1 root 477: /* broadcast the packet to the devices */
1.1.1.3 root 478: return usb_hub_broadcast_packet(s, p);
1.1 root 479: }
1.1.1.3 root 480: return usb_generic_handle_packet(dev, p);
1.1 root 481: }
482:
1.1.1.2 root 483: static void usb_hub_handle_destroy(USBDevice *dev)
484: {
485: USBHubState *s = (USBHubState *)dev;
1.1.1.6 root 486: int i;
1.1.1.2 root 487:
1.1.1.8 root 488: for (i = 0; i < NUM_PORTS; i++) {
1.1.1.6 root 489: usb_unregister_port(usb_bus_from_device(dev),
490: &s->ports[i].port);
491: }
1.1.1.2 root 492: }
493:
1.1.1.8 root 494: static USBPortOps usb_hub_port_ops = {
495: .attach = usb_hub_attach,
496: .detach = usb_hub_detach,
1.1.1.9 root 497: .child_detach = usb_hub_child_detach,
1.1.1.8 root 498: .wakeup = usb_hub_wakeup,
1.1.1.9 root 499: .complete = usb_hub_complete,
1.1.1.8 root 500: };
501:
1.1.1.6 root 502: static int usb_hub_initfn(USBDevice *dev)
1.1 root 503: {
1.1.1.6 root 504: USBHubState *s = DO_UPCAST(USBHubState, dev, dev);
1.1 root 505: USBHubPort *port;
506: int i;
507:
1.1.1.8 root 508: usb_desc_init(dev);
509: for (i = 0; i < NUM_PORTS; i++) {
1.1 root 510: port = &s->ports[i];
1.1.1.6 root 511: usb_register_port(usb_bus_from_device(dev),
1.1.1.8 root 512: &port->port, s, i, &usb_hub_port_ops,
513: USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL);
1.1.1.10! root 514: usb_port_location(&port->port, dev->port, i+1);
1.1 root 515: }
1.1.1.10! root 516: usb_hub_handle_reset(dev);
1.1.1.6 root 517: return 0;
518: }
519:
1.1.1.8 root 520: static const VMStateDescription vmstate_usb_hub_port = {
521: .name = "usb-hub-port",
522: .version_id = 1,
523: .minimum_version_id = 1,
524: .fields = (VMStateField []) {
525: VMSTATE_UINT16(wPortStatus, USBHubPort),
526: VMSTATE_UINT16(wPortChange, USBHubPort),
527: VMSTATE_END_OF_LIST()
528: }
529: };
530:
531: static const VMStateDescription vmstate_usb_hub = {
532: .name = "usb-hub",
533: .version_id = 1,
534: .minimum_version_id = 1,
535: .fields = (VMStateField []) {
536: VMSTATE_USB_DEVICE(dev, USBHubState),
537: VMSTATE_STRUCT_ARRAY(ports, USBHubState, NUM_PORTS, 0,
538: vmstate_usb_hub_port, USBHubPort),
539: VMSTATE_END_OF_LIST()
540: }
541: };
542:
1.1.1.6 root 543: static struct USBDeviceInfo hub_info = {
544: .product_desc = "QEMU USB Hub",
545: .qdev.name = "usb-hub",
1.1.1.8 root 546: .qdev.fw_name = "hub",
1.1.1.6 root 547: .qdev.size = sizeof(USBHubState),
1.1.1.8 root 548: .qdev.vmsd = &vmstate_usb_hub,
549: .usb_desc = &desc_hub,
1.1.1.6 root 550: .init = usb_hub_initfn,
551: .handle_packet = usb_hub_handle_packet,
552: .handle_reset = usb_hub_handle_reset,
553: .handle_control = usb_hub_handle_control,
554: .handle_data = usb_hub_handle_data,
555: .handle_destroy = usb_hub_handle_destroy,
556: };
557:
558: static void usb_hub_register_devices(void)
559: {
560: usb_qdev_register(&hub_info);
1.1 root 561: }
1.1.1.6 root 562: device_init(usb_hub_register_devices)
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.