git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1597 c046a42c-6fe2-441c-8c8c-71466251a162
695 lines
21 KiB
C
695 lines
21 KiB
C
/*
|
|
* QEMU USB emulation
|
|
*
|
|
* Copyright (c) 2005 Fabrice Bellard
|
|
*
|
|
* 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 "vl.h"
|
|
|
|
void usb_attach(USBPort *port, USBDevice *dev)
|
|
{
|
|
port->attach(port, dev);
|
|
}
|
|
|
|
/**********************/
|
|
/* generic USB device helpers (you are not forced to use them when
|
|
writing your USB device driver, but they help handling the
|
|
protocol)
|
|
*/
|
|
|
|
#define SETUP_STATE_IDLE 0
|
|
#define SETUP_STATE_DATA 1
|
|
#define SETUP_STATE_ACK 2
|
|
|
|
int usb_generic_handle_packet(USBDevice *s, int pid,
|
|
uint8_t devaddr, uint8_t devep,
|
|
uint8_t *data, int len)
|
|
{
|
|
int l, ret = 0;
|
|
|
|
switch(pid) {
|
|
case USB_MSG_ATTACH:
|
|
s->state = USB_STATE_ATTACHED;
|
|
break;
|
|
case USB_MSG_DETACH:
|
|
s->state = USB_STATE_NOTATTACHED;
|
|
break;
|
|
case USB_MSG_RESET:
|
|
s->remote_wakeup = 0;
|
|
s->addr = 0;
|
|
s->state = USB_STATE_DEFAULT;
|
|
s->handle_reset(s);
|
|
break;
|
|
case USB_TOKEN_SETUP:
|
|
if (s->state < USB_STATE_DEFAULT || devaddr != s->addr)
|
|
return USB_RET_NODEV;
|
|
if (len != 8)
|
|
goto fail;
|
|
memcpy(s->setup_buf, data, 8);
|
|
s->setup_len = (s->setup_buf[7] << 8) | s->setup_buf[6];
|
|
s->setup_index = 0;
|
|
if (s->setup_buf[0] & USB_DIR_IN) {
|
|
ret = s->handle_control(s,
|
|
(s->setup_buf[0] << 8) | s->setup_buf[1],
|
|
(s->setup_buf[3] << 8) | s->setup_buf[2],
|
|
(s->setup_buf[5] << 8) | s->setup_buf[4],
|
|
s->setup_len,
|
|
s->data_buf);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (ret < s->setup_len)
|
|
s->setup_len = ret;
|
|
s->setup_state = SETUP_STATE_DATA;
|
|
} else {
|
|
if (s->setup_len == 0)
|
|
s->setup_state = SETUP_STATE_ACK;
|
|
else
|
|
s->setup_state = SETUP_STATE_DATA;
|
|
}
|
|
break;
|
|
case USB_TOKEN_IN:
|
|
if (s->state < USB_STATE_DEFAULT || devaddr != s->addr)
|
|
return USB_RET_NODEV;
|
|
switch(devep) {
|
|
case 0:
|
|
switch(s->setup_state) {
|
|
case SETUP_STATE_ACK:
|
|
s->setup_state = SETUP_STATE_IDLE;
|
|
if (!(s->setup_buf[0] & USB_DIR_IN)) {
|
|
ret = s->handle_control(s,
|
|
(s->setup_buf[0] << 8) | s->setup_buf[1],
|
|
(s->setup_buf[3] << 8) | s->setup_buf[2],
|
|
(s->setup_buf[5] << 8) | s->setup_buf[4],
|
|
s->setup_len,
|
|
s->data_buf);
|
|
if (ret > 0)
|
|
ret = 0;
|
|
} else {
|
|
goto fail;
|
|
}
|
|
break;
|
|
case SETUP_STATE_DATA:
|
|
if (s->setup_buf[0] & USB_DIR_IN) {
|
|
l = s->setup_len - s->setup_index;
|
|
if (l > len)
|
|
l = len;
|
|
memcpy(data, s->data_buf + s->setup_index, l);
|
|
s->setup_index += l;
|
|
if (s->setup_index >= s->setup_len)
|
|
s->setup_state = SETUP_STATE_ACK;
|
|
ret = l;
|
|
} else {
|
|
s->setup_state = SETUP_STATE_IDLE;
|
|
goto fail;
|
|
}
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
break;
|
|
default:
|
|
ret = s->handle_data(s, pid, devep, data, len);
|
|
break;
|
|
}
|
|
break;
|
|
case USB_TOKEN_OUT:
|
|
if (s->state < USB_STATE_DEFAULT || devaddr != s->addr)
|
|
return USB_RET_NODEV;
|
|
switch(devep) {
|
|
case 0:
|
|
switch(s->setup_state) {
|
|
case SETUP_STATE_ACK:
|
|
s->setup_state = SETUP_STATE_IDLE;
|
|
if (s->setup_buf[0] & USB_DIR_IN) {
|
|
/* transfer OK */
|
|
} else {
|
|
goto fail;
|
|
}
|
|
break;
|
|
case SETUP_STATE_DATA:
|
|
if (!(s->setup_buf[0] & USB_DIR_IN)) {
|
|
l = s->setup_len - s->setup_index;
|
|
if (l > len)
|
|
l = len;
|
|
memcpy(s->data_buf + s->setup_index, data, l);
|
|
s->setup_index += l;
|
|
if (s->setup_index >= s->setup_len)
|
|
s->setup_state = SETUP_STATE_ACK;
|
|
ret = l;
|
|
} else {
|
|
s->setup_state = SETUP_STATE_IDLE;
|
|
goto fail;
|
|
}
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
break;
|
|
default:
|
|
ret = s->handle_data(s, pid, devep, data, len);
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
fail:
|
|
ret = USB_RET_STALL;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/* XXX: fix overflow */
|
|
int set_usb_string(uint8_t *buf, const char *str)
|
|
{
|
|
int len, i;
|
|
uint8_t *q;
|
|
|
|
q = buf;
|
|
len = strlen(str);
|
|
*q++ = 2 * len + 1;
|
|
*q++ = 3;
|
|
for(i = 0; i < len; i++) {
|
|
*q++ = str[i];
|
|
*q++ = 0;
|
|
}
|
|
return q - buf;
|
|
}
|
|
|
|
/**********************/
|
|
/* USB hub emulation */
|
|
|
|
//#define DEBUG
|
|
|
|
#define MAX_PORTS 8
|
|
|
|
#define DS_IDLE 0
|
|
#define DS_CONTROL_IN 1
|
|
#define DS_CONTROL_OUT 2
|
|
|
|
typedef struct USBHubPort {
|
|
USBPort port;
|
|
USBDevice *dev;
|
|
uint16_t wPortStatus;
|
|
uint16_t wPortChange;
|
|
} USBHubPort;
|
|
|
|
typedef struct USBHubState {
|
|
USBDevice dev;
|
|
int nb_ports;
|
|
USBHubPort ports[MAX_PORTS];
|
|
} USBHubState;
|
|
|
|
#define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE)
|
|
#define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE)
|
|
#define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR)
|
|
#define GetHubStatus (0xa000 | USB_REQ_GET_STATUS)
|
|
#define GetPortStatus (0xa300 | USB_REQ_GET_STATUS)
|
|
#define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE)
|
|
#define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE)
|
|
|
|
#define PORT_STAT_CONNECTION 0x0001
|
|
#define PORT_STAT_ENABLE 0x0002
|
|
#define PORT_STAT_SUSPEND 0x0004
|
|
#define PORT_STAT_OVERCURRENT 0x0008
|
|
#define PORT_STAT_RESET 0x0010
|
|
#define PORT_STAT_POWER 0x0100
|
|
#define PORT_STAT_LOW_SPEED 0x0200
|
|
#define PORT_STAT_HIGH_SPEED 0x0400
|
|
#define PORT_STAT_TEST 0x0800
|
|
#define PORT_STAT_INDICATOR 0x1000
|
|
|
|
#define PORT_STAT_C_CONNECTION 0x0001
|
|
#define PORT_STAT_C_ENABLE 0x0002
|
|
#define PORT_STAT_C_SUSPEND 0x0004
|
|
#define PORT_STAT_C_OVERCURRENT 0x0008
|
|
#define PORT_STAT_C_RESET 0x0010
|
|
|
|
#define PORT_CONNECTION 0
|
|
#define PORT_ENABLE 1
|
|
#define PORT_SUSPEND 2
|
|
#define PORT_OVERCURRENT 3
|
|
#define PORT_RESET 4
|
|
#define PORT_POWER 8
|
|
#define PORT_LOWSPEED 9
|
|
#define PORT_HIGHSPEED 10
|
|
#define PORT_C_CONNECTION 16
|
|
#define PORT_C_ENABLE 17
|
|
#define PORT_C_SUSPEND 18
|
|
#define PORT_C_OVERCURRENT 19
|
|
#define PORT_C_RESET 20
|
|
#define PORT_TEST 21
|
|
#define PORT_INDICATOR 22
|
|
|
|
/* same as Linux kernel root hubs */
|
|
|
|
static const uint8_t qemu_hub_dev_descriptor[] = {
|
|
0x12, /* __u8 bLength; */
|
|
0x01, /* __u8 bDescriptorType; Device */
|
|
0x10, 0x01, /* __u16 bcdUSB; v1.1 */
|
|
|
|
0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */
|
|
0x00, /* __u8 bDeviceSubClass; */
|
|
0x00, /* __u8 bDeviceProtocol; [ low/full speeds only ] */
|
|
0x08, /* __u8 bMaxPacketSize0; 8 Bytes */
|
|
|
|
0x00, 0x00, /* __u16 idVendor; */
|
|
0x00, 0x00, /* __u16 idProduct; */
|
|
0x01, 0x01, /* __u16 bcdDevice */
|
|
|
|
0x03, /* __u8 iManufacturer; */
|
|
0x02, /* __u8 iProduct; */
|
|
0x01, /* __u8 iSerialNumber; */
|
|
0x01 /* __u8 bNumConfigurations; */
|
|
};
|
|
|
|
/* XXX: patch interrupt size */
|
|
static const uint8_t qemu_hub_config_descriptor[] = {
|
|
|
|
/* one configuration */
|
|
0x09, /* __u8 bLength; */
|
|
0x02, /* __u8 bDescriptorType; Configuration */
|
|
0x19, 0x00, /* __u16 wTotalLength; */
|
|
0x01, /* __u8 bNumInterfaces; (1) */
|
|
0x01, /* __u8 bConfigurationValue; */
|
|
0x00, /* __u8 iConfiguration; */
|
|
0xc0, /* __u8 bmAttributes;
|
|
Bit 7: must be set,
|
|
6: Self-powered,
|
|
5: Remote wakeup,
|
|
4..0: resvd */
|
|
0x00, /* __u8 MaxPower; */
|
|
|
|
/* USB 1.1:
|
|
* USB 2.0, single TT organization (mandatory):
|
|
* one interface, protocol 0
|
|
*
|
|
* USB 2.0, multiple TT organization (optional):
|
|
* two interfaces, protocols 1 (like single TT)
|
|
* and 2 (multiple TT mode) ... config is
|
|
* sometimes settable
|
|
* NOT IMPLEMENTED
|
|
*/
|
|
|
|
/* one interface */
|
|
0x09, /* __u8 if_bLength; */
|
|
0x04, /* __u8 if_bDescriptorType; Interface */
|
|
0x00, /* __u8 if_bInterfaceNumber; */
|
|
0x00, /* __u8 if_bAlternateSetting; */
|
|
0x01, /* __u8 if_bNumEndpoints; */
|
|
0x09, /* __u8 if_bInterfaceClass; HUB_CLASSCODE */
|
|
0x00, /* __u8 if_bInterfaceSubClass; */
|
|
0x00, /* __u8 if_bInterfaceProtocol; [usb1.1 or single tt] */
|
|
0x00, /* __u8 if_iInterface; */
|
|
|
|
/* one endpoint (status change endpoint) */
|
|
0x07, /* __u8 ep_bLength; */
|
|
0x05, /* __u8 ep_bDescriptorType; Endpoint */
|
|
0x81, /* __u8 ep_bEndpointAddress; IN Endpoint 1 */
|
|
0x03, /* __u8 ep_bmAttributes; Interrupt */
|
|
0x02, 0x00, /* __u16 ep_wMaxPacketSize; 1 + (MAX_ROOT_PORTS / 8) */
|
|
0xff /* __u8 ep_bInterval; (255ms -- usb 2.0 spec) */
|
|
};
|
|
|
|
static const uint8_t qemu_hub_hub_descriptor[] =
|
|
{
|
|
0x09, /* __u8 bLength; */
|
|
0x29, /* __u8 bDescriptorType; Hub-descriptor */
|
|
0x00, /* __u8 bNbrPorts; (patched later) */
|
|
0x0a, /* __u16 wHubCharacteristics; */
|
|
0x00, /* (per-port OC, no power switching) */
|
|
0x01, /* __u8 bPwrOn2pwrGood; 2ms */
|
|
0x00, /* __u8 bHubContrCurrent; 0 mA */
|
|
0x00, /* __u8 DeviceRemovable; *** 7 Ports max *** */
|
|
0xff /* __u8 PortPwrCtrlMask; *** 7 ports max *** */
|
|
};
|
|
|
|
static void usb_hub_attach(USBPort *port1, USBDevice *dev)
|
|
{
|
|
USBHubState *s = port1->opaque;
|
|
USBHubPort *port = &s->ports[port1->index];
|
|
|
|
if (dev) {
|
|
if (port->dev)
|
|
usb_attach(port1, NULL);
|
|
|
|
port->wPortStatus |= PORT_STAT_CONNECTION;
|
|
port->wPortChange |= PORT_STAT_C_CONNECTION;
|
|
if (dev->speed == USB_SPEED_LOW)
|
|
port->wPortStatus |= PORT_STAT_LOW_SPEED;
|
|
else
|
|
port->wPortStatus &= ~PORT_STAT_LOW_SPEED;
|
|
port->dev = dev;
|
|
} else {
|
|
dev = port->dev;
|
|
if (dev) {
|
|
port->wPortStatus &= ~PORT_STAT_CONNECTION;
|
|
port->wPortChange |= PORT_STAT_C_CONNECTION;
|
|
if (port->wPortStatus & PORT_STAT_ENABLE) {
|
|
port->wPortStatus &= ~PORT_STAT_ENABLE;
|
|
port->wPortChange |= PORT_STAT_C_ENABLE;
|
|
}
|
|
port->dev = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void usb_hub_handle_reset(USBDevice *dev)
|
|
{
|
|
/* XXX: do it */
|
|
}
|
|
|
|
static int usb_hub_handle_control(USBDevice *dev, int request, int value,
|
|
int index, int length, uint8_t *data)
|
|
{
|
|
USBHubState *s = (USBHubState *)dev;
|
|
int ret;
|
|
|
|
switch(request) {
|
|
case DeviceRequest | USB_REQ_GET_STATUS:
|
|
data[0] = (1 << USB_DEVICE_SELF_POWERED) |
|
|
(dev->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP);
|
|
data[1] = 0x00;
|
|
ret = 2;
|
|
break;
|
|
case DeviceOutRequest | USB_REQ_CLEAR_FEATURE:
|
|
if (value == USB_DEVICE_REMOTE_WAKEUP) {
|
|
dev->remote_wakeup = 0;
|
|
} else {
|
|
goto fail;
|
|
}
|
|
ret = 0;
|
|
break;
|
|
case DeviceOutRequest | USB_REQ_SET_FEATURE:
|
|
if (value == USB_DEVICE_REMOTE_WAKEUP) {
|
|
dev->remote_wakeup = 1;
|
|
} else {
|
|
goto fail;
|
|
}
|
|
ret = 0;
|
|
break;
|
|
case DeviceOutRequest | USB_REQ_SET_ADDRESS:
|
|
dev->addr = value;
|
|
ret = 0;
|
|
break;
|
|
case DeviceRequest | USB_REQ_GET_DESCRIPTOR:
|
|
switch(value >> 8) {
|
|
case USB_DT_DEVICE:
|
|
memcpy(data, qemu_hub_dev_descriptor,
|
|
sizeof(qemu_hub_dev_descriptor));
|
|
ret = sizeof(qemu_hub_dev_descriptor);
|
|
break;
|
|
case USB_DT_CONFIG:
|
|
memcpy(data, qemu_hub_config_descriptor,
|
|
sizeof(qemu_hub_config_descriptor));
|
|
ret = sizeof(qemu_hub_config_descriptor);
|
|
break;
|
|
case USB_DT_STRING:
|
|
switch(value & 0xff) {
|
|
case 0:
|
|
/* language ids */
|
|
data[0] = 4;
|
|
data[1] = 3;
|
|
data[2] = 0x09;
|
|
data[3] = 0x04;
|
|
ret = 4;
|
|
break;
|
|
case 1:
|
|
/* serial number */
|
|
ret = set_usb_string(data, "314159");
|
|
break;
|
|
case 2:
|
|
/* product description */
|
|
ret = set_usb_string(data, "QEMU USB Hub");
|
|
break;
|
|
case 3:
|
|
/* vendor description */
|
|
ret = set_usb_string(data, "QEMU " QEMU_VERSION);
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
break;
|
|
case DeviceRequest | USB_REQ_GET_CONFIGURATION:
|
|
data[0] = 1;
|
|
ret = 1;
|
|
break;
|
|
case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
|
|
ret = 0;
|
|
break;
|
|
case DeviceRequest | USB_REQ_GET_INTERFACE:
|
|
data[0] = 0;
|
|
ret = 1;
|
|
break;
|
|
case DeviceOutRequest | USB_REQ_SET_INTERFACE:
|
|
ret = 0;
|
|
break;
|
|
/* usb specific requests */
|
|
case GetHubStatus:
|
|
data[0] = 0;
|
|
data[1] = 0;
|
|
data[2] = 0;
|
|
data[3] = 0;
|
|
ret = 4;
|
|
break;
|
|
case GetPortStatus:
|
|
{
|
|
unsigned int n = index - 1;
|
|
USBHubPort *port;
|
|
if (n >= s->nb_ports)
|
|
goto fail;
|
|
port = &s->ports[n];
|
|
data[0] = port->wPortStatus;
|
|
data[1] = port->wPortStatus >> 8;
|
|
data[2] = port->wPortChange;
|
|
data[3] = port->wPortChange >> 8;
|
|
ret = 4;
|
|
}
|
|
break;
|
|
case SetHubFeature:
|
|
case ClearHubFeature:
|
|
if (value == 0 || value == 1) {
|
|
} else {
|
|
goto fail;
|
|
}
|
|
ret = 0;
|
|
break;
|
|
case SetPortFeature:
|
|
{
|
|
unsigned int n = index - 1;
|
|
USBHubPort *port;
|
|
USBDevice *dev;
|
|
if (n >= s->nb_ports)
|
|
goto fail;
|
|
port = &s->ports[n];
|
|
dev = port->dev;
|
|
switch(value) {
|
|
case PORT_SUSPEND:
|
|
port->wPortStatus |= PORT_STAT_SUSPEND;
|
|
break;
|
|
case PORT_RESET:
|
|
if (dev) {
|
|
dev->handle_packet(dev,
|
|
USB_MSG_RESET, 0, 0, NULL, 0);
|
|
port->wPortChange |= PORT_STAT_C_RESET;
|
|
/* set enable bit */
|
|
port->wPortChange |= PORT_STAT_C_ENABLE;
|
|
port->wPortStatus |= PORT_STAT_ENABLE;
|
|
}
|
|
break;
|
|
case PORT_POWER:
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
ret = 0;
|
|
}
|
|
break;
|
|
case ClearPortFeature:
|
|
{
|
|
unsigned int n = index - 1;
|
|
USBHubPort *port;
|
|
USBDevice *dev;
|
|
if (n >= s->nb_ports)
|
|
goto fail;
|
|
port = &s->ports[n];
|
|
dev = port->dev;
|
|
switch(value) {
|
|
case PORT_ENABLE:
|
|
port->wPortStatus &= ~PORT_STAT_ENABLE;
|
|
break;
|
|
case PORT_C_ENABLE:
|
|
port->wPortChange &= ~PORT_STAT_C_ENABLE;
|
|
break;
|
|
case PORT_SUSPEND:
|
|
port->wPortStatus &= ~PORT_STAT_SUSPEND;
|
|
break;
|
|
case PORT_C_SUSPEND:
|
|
port->wPortChange &= ~PORT_STAT_C_SUSPEND;
|
|
break;
|
|
case PORT_C_CONNECTION:
|
|
port->wPortChange &= ~PORT_STAT_C_CONNECTION;
|
|
break;
|
|
case PORT_C_OVERCURRENT:
|
|
port->wPortChange &= ~PORT_STAT_C_OVERCURRENT;
|
|
break;
|
|
case PORT_C_RESET:
|
|
port->wPortChange &= ~PORT_STAT_C_RESET;
|
|
break;
|
|
default:
|
|
goto fail;
|
|
}
|
|
ret = 0;
|
|
}
|
|
break;
|
|
case GetHubDescriptor:
|
|
memcpy(data, qemu_hub_hub_descriptor,
|
|
sizeof(qemu_hub_hub_descriptor));
|
|
data[2] = s->nb_ports;
|
|
ret = sizeof(qemu_hub_hub_descriptor);
|
|
break;
|
|
default:
|
|
fail:
|
|
ret = USB_RET_STALL;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int usb_hub_handle_data(USBDevice *dev, int pid,
|
|
uint8_t devep, uint8_t *data, int len)
|
|
{
|
|
USBHubState *s = (USBHubState *)dev;
|
|
int ret;
|
|
|
|
switch(pid) {
|
|
case USB_TOKEN_IN:
|
|
if (devep == 1) {
|
|
USBHubPort *port;
|
|
unsigned int status;
|
|
int i, n;
|
|
n = (s->nb_ports + 1 + 7) / 8;
|
|
if (n > len)
|
|
return USB_RET_BABBLE;
|
|
status = 0;
|
|
for(i = 0; i < s->nb_ports; i++) {
|
|
port = &s->ports[i];
|
|
if (port->wPortChange)
|
|
status |= (1 << (i + 1));
|
|
}
|
|
if (status != 0) {
|
|
for(i = 0; i < n; i++) {
|
|
data[i] = status >> (8 * i);
|
|
}
|
|
ret = n;
|
|
} else {
|
|
ret = 0;
|
|
}
|
|
} else {
|
|
goto fail;
|
|
}
|
|
break;
|
|
case USB_TOKEN_OUT:
|
|
default:
|
|
fail:
|
|
ret = USB_RET_STALL;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int usb_hub_broadcast_packet(USBHubState *s, int pid,
|
|
uint8_t devaddr, uint8_t devep,
|
|
uint8_t *data, int len)
|
|
{
|
|
USBHubPort *port;
|
|
USBDevice *dev;
|
|
int i, ret;
|
|
|
|
for(i = 0; i < s->nb_ports; i++) {
|
|
port = &s->ports[i];
|
|
dev = port->dev;
|
|
if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) {
|
|
ret = dev->handle_packet(dev, pid,
|
|
devaddr, devep,
|
|
data, len);
|
|
if (ret != USB_RET_NODEV) {
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
return USB_RET_NODEV;
|
|
}
|
|
|
|
static int usb_hub_handle_packet(USBDevice *dev, int pid,
|
|
uint8_t devaddr, uint8_t devep,
|
|
uint8_t *data, int len)
|
|
{
|
|
USBHubState *s = (USBHubState *)dev;
|
|
|
|
#if defined(DEBUG) && 0
|
|
printf("usb_hub: pid=0x%x\n", pid);
|
|
#endif
|
|
if (dev->state == USB_STATE_DEFAULT &&
|
|
dev->addr != 0 &&
|
|
devaddr != dev->addr &&
|
|
(pid == USB_TOKEN_SETUP ||
|
|
pid == USB_TOKEN_OUT ||
|
|
pid == USB_TOKEN_IN)) {
|
|
/* broadcast the packet to the devices */
|
|
return usb_hub_broadcast_packet(s, pid, devaddr, devep, data, len);
|
|
}
|
|
return usb_generic_handle_packet(dev, pid, devaddr, devep, data, len);
|
|
}
|
|
|
|
USBDevice *usb_hub_init(USBPort **usb_ports, int nb_ports)
|
|
{
|
|
USBHubState *s;
|
|
USBHubPort *port;
|
|
int i;
|
|
|
|
if (nb_ports > MAX_PORTS)
|
|
return NULL;
|
|
s = qemu_mallocz(sizeof(USBHubState));
|
|
if (!s)
|
|
return NULL;
|
|
s->dev.speed = USB_SPEED_FULL;
|
|
s->dev.handle_packet = usb_hub_handle_packet;
|
|
|
|
/* generic USB device init */
|
|
s->dev.handle_reset = usb_hub_handle_reset;
|
|
s->dev.handle_control = usb_hub_handle_control;
|
|
s->dev.handle_data = usb_hub_handle_data;
|
|
|
|
s->nb_ports = nb_ports;
|
|
for(i = 0; i < s->nb_ports; i++) {
|
|
port = &s->ports[i];
|
|
port->wPortStatus = PORT_STAT_POWER;
|
|
port->wPortChange = 0;
|
|
port->port.attach = usb_hub_attach;
|
|
port->port.opaque = s;
|
|
port->port.index = i;
|
|
usb_ports[i] = &port->port;
|
|
}
|
|
return (USBDevice *)s;
|
|
}
|