2 * QEMU USB HUB emulation
4 * Copyright (c) 2005 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
30 typedef struct USBHubPort {
36 typedef struct USBHubState {
39 USBHubPort ports[MAX_PORTS];
42 #define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE)
43 #define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE)
44 #define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR)
45 #define GetHubStatus (0xa000 | USB_REQ_GET_STATUS)
46 #define GetPortStatus (0xa300 | USB_REQ_GET_STATUS)
47 #define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE)
48 #define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE)
50 #define PORT_STAT_CONNECTION 0x0001
51 #define PORT_STAT_ENABLE 0x0002
52 #define PORT_STAT_SUSPEND 0x0004
53 #define PORT_STAT_OVERCURRENT 0x0008
54 #define PORT_STAT_RESET 0x0010
55 #define PORT_STAT_POWER 0x0100
56 #define PORT_STAT_LOW_SPEED 0x0200
57 #define PORT_STAT_HIGH_SPEED 0x0400
58 #define PORT_STAT_TEST 0x0800
59 #define PORT_STAT_INDICATOR 0x1000
61 #define PORT_STAT_C_CONNECTION 0x0001
62 #define PORT_STAT_C_ENABLE 0x0002
63 #define PORT_STAT_C_SUSPEND 0x0004
64 #define PORT_STAT_C_OVERCURRENT 0x0008
65 #define PORT_STAT_C_RESET 0x0010
67 #define PORT_CONNECTION 0
69 #define PORT_SUSPEND 2
70 #define PORT_OVERCURRENT 3
73 #define PORT_LOWSPEED 9
74 #define PORT_HIGHSPEED 10
75 #define PORT_C_CONNECTION 16
76 #define PORT_C_ENABLE 17
77 #define PORT_C_SUSPEND 18
78 #define PORT_C_OVERCURRENT 19
79 #define PORT_C_RESET 20
81 #define PORT_INDICATOR 22
83 /* same as Linux kernel root hubs */
85 static const uint8_t qemu_hub_dev_descriptor[] = {
86 0x12, /* u8 bLength; */
87 0x01, /* u8 bDescriptorType; Device */
88 0x10, 0x01, /* u16 bcdUSB; v1.1 */
90 0x09, /* u8 bDeviceClass; HUB_CLASSCODE */
91 0x00, /* u8 bDeviceSubClass; */
92 0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */
93 0x08, /* u8 bMaxPacketSize0; 8 Bytes */
95 0x00, 0x00, /* u16 idVendor; */
96 0x00, 0x00, /* u16 idProduct; */
97 0x01, 0x01, /* u16 bcdDevice */
99 0x03, /* u8 iManufacturer; */
100 0x02, /* u8 iProduct; */
101 0x01, /* u8 iSerialNumber; */
102 0x01 /* u8 bNumConfigurations; */
105 /* XXX: patch interrupt size */
106 static const uint8_t qemu_hub_config_descriptor[] = {
108 /* one configuration */
109 0x09, /* u8 bLength; */
110 0x02, /* u8 bDescriptorType; Configuration */
111 0x19, 0x00, /* u16 wTotalLength; */
112 0x01, /* u8 bNumInterfaces; (1) */
113 0x01, /* u8 bConfigurationValue; */
114 0x00, /* u8 iConfiguration; */
115 0xc0, /* u8 bmAttributes;
120 0x00, /* u8 MaxPower; */
123 * USB 2.0, single TT organization (mandatory):
124 * one interface, protocol 0
126 * USB 2.0, multiple TT organization (optional):
127 * two interfaces, protocols 1 (like single TT)
128 * and 2 (multiple TT mode) ... config is
134 0x09, /* u8 if_bLength; */
135 0x04, /* u8 if_bDescriptorType; Interface */
136 0x00, /* u8 if_bInterfaceNumber; */
137 0x00, /* u8 if_bAlternateSetting; */
138 0x01, /* u8 if_bNumEndpoints; */
139 0x09, /* u8 if_bInterfaceClass; HUB_CLASSCODE */
140 0x00, /* u8 if_bInterfaceSubClass; */
141 0x00, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */
142 0x00, /* u8 if_iInterface; */
144 /* one endpoint (status change endpoint) */
145 0x07, /* u8 ep_bLength; */
146 0x05, /* u8 ep_bDescriptorType; Endpoint */
147 0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */
148 0x03, /* u8 ep_bmAttributes; Interrupt */
149 0x02, 0x00, /* u16 ep_wMaxPacketSize; 1 + (MAX_ROOT_PORTS / 8) */
150 0xff /* u8 ep_bInterval; (255ms -- usb 2.0 spec) */
153 static const uint8_t qemu_hub_hub_descriptor[] =
155 0x09, /* u8 bLength; */
156 0x29, /* u8 bDescriptorType; Hub-descriptor */
157 0x00, /* u8 bNbrPorts; (patched later) */
158 0x0a, /* u16 wHubCharacteristics; */
159 0x00, /* (per-port OC, no power switching) */
160 0x01, /* u8 bPwrOn2pwrGood; 2ms */
161 0x00, /* u8 bHubContrCurrent; 0 mA */
162 0x00, /* u8 DeviceRemovable; *** 7 Ports max *** */
163 0xff /* u8 PortPwrCtrlMask; *** 7 ports max *** */
166 static void usb_hub_attach(USBPort *port1, USBDevice *dev)
168 USBHubState *s = port1->opaque;
169 USBHubPort *port = &s->ports[port1->index];
173 usb_attach(port1, NULL);
175 port->wPortStatus |= PORT_STAT_CONNECTION;
176 port->wPortChange |= PORT_STAT_C_CONNECTION;
177 if (dev->speed == USB_SPEED_LOW)
178 port->wPortStatus |= PORT_STAT_LOW_SPEED;
180 port->wPortStatus &= ~PORT_STAT_LOW_SPEED;
181 port->port.dev = dev;
183 dev = port->port.dev;
185 port->wPortStatus &= ~PORT_STAT_CONNECTION;
186 port->wPortChange |= PORT_STAT_C_CONNECTION;
187 if (port->wPortStatus & PORT_STAT_ENABLE) {
188 port->wPortStatus &= ~PORT_STAT_ENABLE;
189 port->wPortChange |= PORT_STAT_C_ENABLE;
191 port->port.dev = NULL;
196 static void usb_hub_handle_reset(USBDevice *dev)
201 static int usb_hub_handle_control(USBDevice *dev, int request, int value,
202 int index, int length, uint8_t *data)
204 USBHubState *s = (USBHubState *)dev;
208 case DeviceRequest | USB_REQ_GET_STATUS:
209 data[0] = (1 << USB_DEVICE_SELF_POWERED) |
210 (dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP);
214 case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
215 if (value == USB_DEVICE_REMOTE_WAKEUP) {
216 dev->remote_wakeup = 0;
222 case DeviceOutRequest | USB_REQ_SET_FEATURE:
223 if (value == USB_DEVICE_REMOTE_WAKEUP) {
224 dev->remote_wakeup = 1;
230 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
234 case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
237 memcpy(data, qemu_hub_dev_descriptor,
238 sizeof(qemu_hub_dev_descriptor));
239 ret = sizeof(qemu_hub_dev_descriptor);
242 memcpy(data, qemu_hub_config_descriptor,
243 sizeof(qemu_hub_config_descriptor));
244 ret = sizeof(qemu_hub_config_descriptor);
247 switch(value & 0xff) {
258 ret = set_usb_string(data, "314159");
261 /* product description */
262 ret = set_usb_string(data, "QEMU USB Hub");
265 /* vendor description */
266 ret = set_usb_string(data, "QEMU " QEMU_VERSION);
276 case DeviceRequest | USB_REQ_GET_CONFIGURATION:
280 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
283 case DeviceRequest | USB_REQ_GET_INTERFACE:
287 case DeviceOutRequest | USB_REQ_SET_INTERFACE:
290 /* usb specific requests */
300 unsigned int n = index - 1;
302 if (n >= s->nb_ports)
305 data[0] = port->wPortStatus;
306 data[1] = port->wPortStatus >> 8;
307 data[2] = port->wPortChange;
308 data[3] = port->wPortChange >> 8;
313 case ClearHubFeature:
314 if (value == 0 || value == 1) {
322 unsigned int n = index - 1;
325 if (n >= s->nb_ports)
328 dev = port->port.dev;
331 port->wPortStatus |= PORT_STAT_SUSPEND;
335 dev->handle_packet(dev,
336 USB_MSG_RESET, 0, 0, NULL, 0);
337 port->wPortChange |= PORT_STAT_C_RESET;
339 port->wPortStatus |= PORT_STAT_ENABLE;
350 case ClearPortFeature:
352 unsigned int n = index - 1;
355 if (n >= s->nb_ports)
358 dev = port->port.dev;
361 port->wPortStatus &= ~PORT_STAT_ENABLE;
364 port->wPortChange &= ~PORT_STAT_C_ENABLE;
367 port->wPortStatus &= ~PORT_STAT_SUSPEND;
370 port->wPortChange &= ~PORT_STAT_C_SUSPEND;
372 case PORT_C_CONNECTION:
373 port->wPortChange &= ~PORT_STAT_C_CONNECTION;
375 case PORT_C_OVERCURRENT:
376 port->wPortChange &= ~PORT_STAT_C_OVERCURRENT;
379 port->wPortChange &= ~PORT_STAT_C_RESET;
387 case GetHubDescriptor:
388 memcpy(data, qemu_hub_hub_descriptor,
389 sizeof(qemu_hub_hub_descriptor));
390 data[2] = s->nb_ports;
391 ret = sizeof(qemu_hub_hub_descriptor);
401 static int usb_hub_handle_data(USBDevice *dev, int pid,
402 uint8_t devep, uint8_t *data, int len)
404 USBHubState *s = (USBHubState *)dev;
413 n = (s->nb_ports + 1 + 7) / 8;
415 return USB_RET_BABBLE;
417 for(i = 0; i < s->nb_ports; i++) {
419 if (port->wPortChange)
420 status |= (1 << (i + 1));
423 for(i = 0; i < n; i++) {
424 data[i] = status >> (8 * i);
443 static int usb_hub_broadcast_packet(USBHubState *s, int pid,
444 uint8_t devaddr, uint8_t devep,
445 uint8_t *data, int len)
451 for(i = 0; i < s->nb_ports; i++) {
453 dev = port->port.dev;
454 if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) {
455 ret = dev->handle_packet(dev, pid,
458 if (ret != USB_RET_NODEV) {
463 return USB_RET_NODEV;
466 static int usb_hub_handle_packet(USBDevice *dev, int pid,
467 uint8_t devaddr, uint8_t devep,
468 uint8_t *data, int len)
470 USBHubState *s = (USBHubState *)dev;
472 #if defined(DEBUG) && 0
473 printf("usb_hub: pid=0x%x\n", pid);
475 if (dev->state == USB_STATE_DEFAULT &&
477 devaddr != dev->addr &&
478 (pid == USB_TOKEN_SETUP ||
479 pid == USB_TOKEN_OUT ||
480 pid == USB_TOKEN_IN)) {
481 /* broadcast the packet to the devices */
482 return usb_hub_broadcast_packet(s, pid, devaddr, devep, data, len);
484 return usb_generic_handle_packet(dev, pid, devaddr, devep, data, len);
487 USBDevice *usb_hub_init(USBPort **usb_ports, int nb_ports)
493 if (nb_ports > MAX_PORTS)
495 s = qemu_mallocz(sizeof(USBHubState));
498 s->dev.speed = USB_SPEED_FULL;
499 s->dev.handle_packet = usb_hub_handle_packet;
501 /* generic USB device init */
502 s->dev.handle_reset = usb_hub_handle_reset;
503 s->dev.handle_control = usb_hub_handle_control;
504 s->dev.handle_data = usb_hub_handle_data;
506 s->nb_ports = nb_ports;
507 for(i = 0; i < s->nb_ports; i++) {
509 port->wPortStatus = PORT_STAT_POWER;
510 port->wPortChange = 0;
511 port->port.attach = usb_hub_attach;
512 port->port.opaque = s;
513 port->port.index = i;
514 usb_ports[i] = &port->port;
516 return (USBDevice *)s;