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/*
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* QEMU USB HUB emulation
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*
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* Copyright (c) 2005 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h" |
25 |
#include "usb.h" |
26 |
|
27 |
//#define DEBUG
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|
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#define MAX_PORTS 8 |
30 |
|
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typedef struct USBHubPort { |
32 |
USBPort port; |
33 |
uint16_t wPortStatus; |
34 |
uint16_t wPortChange; |
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} USBHubPort; |
36 |
|
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typedef struct USBHubState { |
38 |
USBDevice dev; |
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int nb_ports;
|
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USBHubPort ports[MAX_PORTS]; |
41 |
} USBHubState; |
42 |
|
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#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 |
|
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#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 |
|
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#define PORT_CONNECTION 0 |
69 |
#define PORT_ENABLE 1 |
70 |
#define PORT_SUSPEND 2 |
71 |
#define PORT_OVERCURRENT 3 |
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#define PORT_RESET 4 |
73 |
#define PORT_POWER 8 |
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#define PORT_LOWSPEED 9 |
75 |
#define PORT_HIGHSPEED 10 |
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#define PORT_C_CONNECTION 16 |
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#define PORT_C_ENABLE 17 |
78 |
#define PORT_C_SUSPEND 18 |
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#define PORT_C_OVERCURRENT 19 |
80 |
#define PORT_C_RESET 20 |
81 |
#define PORT_TEST 21 |
82 |
#define PORT_INDICATOR 22 |
83 |
|
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/* same as Linux kernel root hubs */
|
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|
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static const uint8_t qemu_hub_dev_descriptor[] = { |
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0x12, /* u8 bLength; */ |
88 |
0x01, /* u8 bDescriptorType; Device */ |
89 |
0x10, 0x01, /* u16 bcdUSB; v1.1 */ |
90 |
|
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0x09, /* u8 bDeviceClass; HUB_CLASSCODE */ |
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0x00, /* u8 bDeviceSubClass; */ |
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0x00, /* u8 bDeviceProtocol; [ low/full speeds only ] */ |
94 |
0x08, /* u8 bMaxPacketSize0; 8 Bytes */ |
95 |
|
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0x00, 0x00, /* u16 idVendor; */ |
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0x00, 0x00, /* u16 idProduct; */ |
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0x01, 0x01, /* u16 bcdDevice */ |
99 |
|
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0x03, /* u8 iManufacturer; */ |
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0x02, /* u8 iProduct; */ |
102 |
0x01, /* u8 iSerialNumber; */ |
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0x01 /* u8 bNumConfigurations; */ |
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}; |
105 |
|
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/* XXX: patch interrupt size */
|
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static const uint8_t qemu_hub_config_descriptor[] = { |
108 |
|
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/* one configuration */
|
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0x09, /* u8 bLength; */ |
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0x02, /* u8 bDescriptorType; Configuration */ |
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0x19, 0x00, /* u16 wTotalLength; */ |
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0x01, /* u8 bNumInterfaces; (1) */ |
114 |
0x01, /* u8 bConfigurationValue; */ |
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0x00, /* u8 iConfiguration; */ |
116 |
0xc0, /* u8 bmAttributes; |
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Bit 7: must be set,
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6: Self-powered,
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5: Remote wakeup,
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4..0: resvd */
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0x00, /* u8 MaxPower; */ |
122 |
|
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/* USB 1.1:
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* USB 2.0, single TT organization (mandatory):
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* one interface, protocol 0
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*
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* USB 2.0, multiple TT organization (optional):
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* two interfaces, protocols 1 (like single TT)
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* and 2 (multiple TT mode) ... config is
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* sometimes settable
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* NOT IMPLEMENTED
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*/
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|
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/* one interface */
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0x09, /* u8 if_bLength; */ |
136 |
0x04, /* u8 if_bDescriptorType; Interface */ |
137 |
0x00, /* u8 if_bInterfaceNumber; */ |
138 |
0x00, /* u8 if_bAlternateSetting; */ |
139 |
0x01, /* u8 if_bNumEndpoints; */ |
140 |
0x09, /* u8 if_bInterfaceClass; HUB_CLASSCODE */ |
141 |
0x00, /* u8 if_bInterfaceSubClass; */ |
142 |
0x00, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */ |
143 |
0x00, /* u8 if_iInterface; */ |
144 |
|
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/* one endpoint (status change endpoint) */
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0x07, /* u8 ep_bLength; */ |
147 |
0x05, /* u8 ep_bDescriptorType; Endpoint */ |
148 |
0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */ |
149 |
0x03, /* u8 ep_bmAttributes; Interrupt */ |
150 |
0x02, 0x00, /* u16 ep_wMaxPacketSize; 1 + (MAX_ROOT_PORTS / 8) */ |
151 |
0xff /* u8 ep_bInterval; (255ms -- usb 2.0 spec) */ |
152 |
}; |
153 |
|
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static const uint8_t qemu_hub_hub_descriptor[] = |
155 |
{ |
156 |
0x00, /* u8 bLength; patched in later */ |
157 |
0x29, /* u8 bDescriptorType; Hub-descriptor */ |
158 |
0x00, /* u8 bNbrPorts; (patched later) */ |
159 |
0x0a, /* u16 wHubCharacteristics; */ |
160 |
0x00, /* (per-port OC, no power switching) */ |
161 |
0x01, /* u8 bPwrOn2pwrGood; 2ms */ |
162 |
0x00 /* u8 bHubContrCurrent; 0 mA */ |
163 |
|
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/* DeviceRemovable and PortPwrCtrlMask patched in later */
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}; |
166 |
|
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static void usb_hub_attach(USBPort *port1, USBDevice *dev) |
168 |
{ |
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USBHubState *s = port1->opaque; |
170 |
USBHubPort *port = &s->ports[port1->index]; |
171 |
|
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if (dev) {
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if (port->port.dev)
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usb_attach(port1, NULL);
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|
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port->wPortStatus |= PORT_STAT_CONNECTION; |
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port->wPortChange |= PORT_STAT_C_CONNECTION; |
178 |
if (dev->speed == USB_SPEED_LOW)
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port->wPortStatus |= PORT_STAT_LOW_SPEED; |
180 |
else
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port->wPortStatus &= ~PORT_STAT_LOW_SPEED; |
182 |
port->port.dev = dev; |
183 |
/* send the attach message */
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usb_send_msg(dev, USB_MSG_ATTACH); |
185 |
} else {
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dev = port->port.dev; |
187 |
if (dev) {
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port->wPortStatus &= ~PORT_STAT_CONNECTION; |
189 |
port->wPortChange |= PORT_STAT_C_CONNECTION; |
190 |
if (port->wPortStatus & PORT_STAT_ENABLE) {
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port->wPortStatus &= ~PORT_STAT_ENABLE; |
192 |
port->wPortChange |= PORT_STAT_C_ENABLE; |
193 |
} |
194 |
/* send the detach message */
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usb_send_msg(dev, USB_MSG_DETACH); |
196 |
port->port.dev = NULL;
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} |
198 |
} |
199 |
} |
200 |
|
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static void usb_hub_handle_reset(USBDevice *dev) |
202 |
{ |
203 |
/* XXX: do it */
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} |
205 |
|
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static int usb_hub_handle_control(USBDevice *dev, int request, int value, |
207 |
int index, int length, uint8_t *data) |
208 |
{ |
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USBHubState *s = (USBHubState *)dev; |
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int ret;
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|
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switch(request) {
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case DeviceRequest | USB_REQ_GET_STATUS:
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data[0] = (1 << USB_DEVICE_SELF_POWERED) | |
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(dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP); |
216 |
data[1] = 0x00; |
217 |
ret = 2;
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break;
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case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
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if (value == USB_DEVICE_REMOTE_WAKEUP) {
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dev->remote_wakeup = 0;
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} else {
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goto fail;
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} |
225 |
ret = 0;
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break;
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227 |
case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
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if (value == 0 && index != 0x81) { /* clear ep halt */ |
229 |
goto fail;
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} |
231 |
ret = 0;
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break;
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case DeviceOutRequest | USB_REQ_SET_FEATURE:
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if (value == USB_DEVICE_REMOTE_WAKEUP) {
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dev->remote_wakeup = 1;
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} else {
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goto fail;
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} |
239 |
ret = 0;
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break;
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case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
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dev->addr = value; |
243 |
ret = 0;
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break;
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case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
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switch(value >> 8) { |
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case USB_DT_DEVICE:
|
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memcpy(data, qemu_hub_dev_descriptor, |
249 |
sizeof(qemu_hub_dev_descriptor));
|
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ret = sizeof(qemu_hub_dev_descriptor);
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break;
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case USB_DT_CONFIG:
|
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memcpy(data, qemu_hub_config_descriptor, |
254 |
sizeof(qemu_hub_config_descriptor));
|
255 |
|
256 |
/* status change endpoint size based on number
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* of ports */
|
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data[22] = (s->nb_ports + 1 + 7) / 8; |
259 |
|
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ret = sizeof(qemu_hub_config_descriptor);
|
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break;
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case USB_DT_STRING:
|
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switch(value & 0xff) { |
264 |
case 0: |
265 |
/* language ids */
|
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data[0] = 4; |
267 |
data[1] = 3; |
268 |
data[2] = 0x09; |
269 |
data[3] = 0x04; |
270 |
ret = 4;
|
271 |
break;
|
272 |
case 1: |
273 |
/* serial number */
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274 |
ret = set_usb_string(data, "314159");
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275 |
break;
|
276 |
case 2: |
277 |
/* product description */
|
278 |
ret = set_usb_string(data, "QEMU USB Hub");
|
279 |
break;
|
280 |
case 3: |
281 |
/* vendor description */
|
282 |
ret = set_usb_string(data, "QEMU " QEMU_VERSION);
|
283 |
break;
|
284 |
default:
|
285 |
goto fail;
|
286 |
} |
287 |
break;
|
288 |
default:
|
289 |
goto fail;
|
290 |
} |
291 |
break;
|
292 |
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
293 |
data[0] = 1; |
294 |
ret = 1;
|
295 |
break;
|
296 |
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
297 |
ret = 0;
|
298 |
break;
|
299 |
case DeviceRequest | USB_REQ_GET_INTERFACE:
|
300 |
data[0] = 0; |
301 |
ret = 1;
|
302 |
break;
|
303 |
case DeviceOutRequest | USB_REQ_SET_INTERFACE:
|
304 |
ret = 0;
|
305 |
break;
|
306 |
/* usb specific requests */
|
307 |
case GetHubStatus:
|
308 |
data[0] = 0; |
309 |
data[1] = 0; |
310 |
data[2] = 0; |
311 |
data[3] = 0; |
312 |
ret = 4;
|
313 |
break;
|
314 |
case GetPortStatus:
|
315 |
{ |
316 |
unsigned int n = index - 1; |
317 |
USBHubPort *port; |
318 |
if (n >= s->nb_ports)
|
319 |
goto fail;
|
320 |
port = &s->ports[n]; |
321 |
data[0] = port->wPortStatus;
|
322 |
data[1] = port->wPortStatus >> 8; |
323 |
data[2] = port->wPortChange;
|
324 |
data[3] = port->wPortChange >> 8; |
325 |
ret = 4;
|
326 |
} |
327 |
break;
|
328 |
case SetHubFeature:
|
329 |
case ClearHubFeature:
|
330 |
if (value == 0 || value == 1) { |
331 |
} else {
|
332 |
goto fail;
|
333 |
} |
334 |
ret = 0;
|
335 |
break;
|
336 |
case SetPortFeature:
|
337 |
{ |
338 |
unsigned int n = index - 1; |
339 |
USBHubPort *port; |
340 |
USBDevice *dev; |
341 |
if (n >= s->nb_ports)
|
342 |
goto fail;
|
343 |
port = &s->ports[n]; |
344 |
dev = port->port.dev; |
345 |
switch(value) {
|
346 |
case PORT_SUSPEND:
|
347 |
port->wPortStatus |= PORT_STAT_SUSPEND; |
348 |
break;
|
349 |
case PORT_RESET:
|
350 |
if (dev) {
|
351 |
usb_send_msg(dev, USB_MSG_RESET); |
352 |
port->wPortChange |= PORT_STAT_C_RESET; |
353 |
/* set enable bit */
|
354 |
port->wPortStatus |= PORT_STAT_ENABLE; |
355 |
} |
356 |
break;
|
357 |
case PORT_POWER:
|
358 |
break;
|
359 |
default:
|
360 |
goto fail;
|
361 |
} |
362 |
ret = 0;
|
363 |
} |
364 |
break;
|
365 |
case ClearPortFeature:
|
366 |
{ |
367 |
unsigned int n = index - 1; |
368 |
USBHubPort *port; |
369 |
USBDevice *dev; |
370 |
if (n >= s->nb_ports)
|
371 |
goto fail;
|
372 |
port = &s->ports[n]; |
373 |
dev = port->port.dev; |
374 |
switch(value) {
|
375 |
case PORT_ENABLE:
|
376 |
port->wPortStatus &= ~PORT_STAT_ENABLE; |
377 |
break;
|
378 |
case PORT_C_ENABLE:
|
379 |
port->wPortChange &= ~PORT_STAT_C_ENABLE; |
380 |
break;
|
381 |
case PORT_SUSPEND:
|
382 |
port->wPortStatus &= ~PORT_STAT_SUSPEND; |
383 |
break;
|
384 |
case PORT_C_SUSPEND:
|
385 |
port->wPortChange &= ~PORT_STAT_C_SUSPEND; |
386 |
break;
|
387 |
case PORT_C_CONNECTION:
|
388 |
port->wPortChange &= ~PORT_STAT_C_CONNECTION; |
389 |
break;
|
390 |
case PORT_C_OVERCURRENT:
|
391 |
port->wPortChange &= ~PORT_STAT_C_OVERCURRENT; |
392 |
break;
|
393 |
case PORT_C_RESET:
|
394 |
port->wPortChange &= ~PORT_STAT_C_RESET; |
395 |
break;
|
396 |
default:
|
397 |
goto fail;
|
398 |
} |
399 |
ret = 0;
|
400 |
} |
401 |
break;
|
402 |
case GetHubDescriptor:
|
403 |
{ |
404 |
unsigned int n, limit, var_hub_size = 0; |
405 |
memcpy(data, qemu_hub_hub_descriptor, |
406 |
sizeof(qemu_hub_hub_descriptor));
|
407 |
data[2] = s->nb_ports;
|
408 |
|
409 |
/* fill DeviceRemovable bits */
|
410 |
limit = ((s->nb_ports + 1 + 7) / 8) + 7; |
411 |
for (n = 7; n < limit; n++) { |
412 |
data[n] = 0x00;
|
413 |
var_hub_size++; |
414 |
} |
415 |
|
416 |
/* fill PortPwrCtrlMask bits */
|
417 |
limit = limit + ((s->nb_ports + 7) / 8); |
418 |
for (;n < limit; n++) {
|
419 |
data[n] = 0xff;
|
420 |
var_hub_size++; |
421 |
} |
422 |
|
423 |
ret = sizeof(qemu_hub_hub_descriptor) + var_hub_size;
|
424 |
data[0] = ret;
|
425 |
break;
|
426 |
} |
427 |
default:
|
428 |
fail:
|
429 |
ret = USB_RET_STALL; |
430 |
break;
|
431 |
} |
432 |
return ret;
|
433 |
} |
434 |
|
435 |
static int usb_hub_handle_data(USBDevice *dev, USBPacket *p) |
436 |
{ |
437 |
USBHubState *s = (USBHubState *)dev; |
438 |
int ret;
|
439 |
|
440 |
switch(p->pid) {
|
441 |
case USB_TOKEN_IN:
|
442 |
if (p->devep == 1) { |
443 |
USBHubPort *port; |
444 |
unsigned int status; |
445 |
int i, n;
|
446 |
n = (s->nb_ports + 1 + 7) / 8; |
447 |
if (p->len == 1) { /* FreeBSD workaround */ |
448 |
n = 1;
|
449 |
} else if (n > p->len) { |
450 |
return USB_RET_BABBLE;
|
451 |
} |
452 |
status = 0;
|
453 |
for(i = 0; i < s->nb_ports; i++) { |
454 |
port = &s->ports[i]; |
455 |
if (port->wPortChange)
|
456 |
status |= (1 << (i + 1)); |
457 |
} |
458 |
if (status != 0) { |
459 |
for(i = 0; i < n; i++) { |
460 |
p->data[i] = status >> (8 * i);
|
461 |
} |
462 |
ret = n; |
463 |
} else {
|
464 |
ret = USB_RET_NAK; /* usb11 11.13.1 */
|
465 |
} |
466 |
} else {
|
467 |
goto fail;
|
468 |
} |
469 |
break;
|
470 |
case USB_TOKEN_OUT:
|
471 |
default:
|
472 |
fail:
|
473 |
ret = USB_RET_STALL; |
474 |
break;
|
475 |
} |
476 |
return ret;
|
477 |
} |
478 |
|
479 |
static int usb_hub_broadcast_packet(USBHubState *s, USBPacket *p) |
480 |
{ |
481 |
USBHubPort *port; |
482 |
USBDevice *dev; |
483 |
int i, ret;
|
484 |
|
485 |
for(i = 0; i < s->nb_ports; i++) { |
486 |
port = &s->ports[i]; |
487 |
dev = port->port.dev; |
488 |
if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) {
|
489 |
ret = dev->handle_packet(dev, p); |
490 |
if (ret != USB_RET_NODEV) {
|
491 |
return ret;
|
492 |
} |
493 |
} |
494 |
} |
495 |
return USB_RET_NODEV;
|
496 |
} |
497 |
|
498 |
static int usb_hub_handle_packet(USBDevice *dev, USBPacket *p) |
499 |
{ |
500 |
USBHubState *s = (USBHubState *)dev; |
501 |
|
502 |
#if defined(DEBUG) && 0 |
503 |
printf("usb_hub: pid=0x%x\n", pid);
|
504 |
#endif
|
505 |
if (dev->state == USB_STATE_DEFAULT &&
|
506 |
dev->addr != 0 &&
|
507 |
p->devaddr != dev->addr && |
508 |
(p->pid == USB_TOKEN_SETUP || |
509 |
p->pid == USB_TOKEN_OUT || |
510 |
p->pid == USB_TOKEN_IN)) { |
511 |
/* broadcast the packet to the devices */
|
512 |
return usb_hub_broadcast_packet(s, p);
|
513 |
} |
514 |
return usb_generic_handle_packet(dev, p);
|
515 |
} |
516 |
|
517 |
static void usb_hub_handle_destroy(USBDevice *dev) |
518 |
{ |
519 |
USBHubState *s = (USBHubState *)dev; |
520 |
|
521 |
qemu_free(s); |
522 |
} |
523 |
|
524 |
USBDevice *usb_hub_init(int nb_ports)
|
525 |
{ |
526 |
USBHubState *s; |
527 |
USBHubPort *port; |
528 |
int i;
|
529 |
|
530 |
if (nb_ports > MAX_PORTS)
|
531 |
return NULL; |
532 |
s = qemu_mallocz(sizeof(USBHubState));
|
533 |
s->dev.speed = USB_SPEED_FULL; |
534 |
s->dev.handle_packet = usb_hub_handle_packet; |
535 |
|
536 |
/* generic USB device init */
|
537 |
s->dev.handle_reset = usb_hub_handle_reset; |
538 |
s->dev.handle_control = usb_hub_handle_control; |
539 |
s->dev.handle_data = usb_hub_handle_data; |
540 |
s->dev.handle_destroy = usb_hub_handle_destroy; |
541 |
|
542 |
pstrcpy(s->dev.devname, sizeof(s->dev.devname), "QEMU USB Hub"); |
543 |
|
544 |
s->nb_ports = nb_ports; |
545 |
for(i = 0; i < s->nb_ports; i++) { |
546 |
port = &s->ports[i]; |
547 |
qemu_register_usb_port(&port->port, s, i, usb_hub_attach); |
548 |
port->wPortStatus = PORT_STAT_POWER; |
549 |
port->wPortChange = 0;
|
550 |
} |
551 |
return (USBDevice *)s;
|
552 |
} |