mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-24 20:19:44 +00:00
659139d780
Simplifies power budget negotiation. Signed-off-by: Riku Voipio <riku.voipio@nokia.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
563 lines
16 KiB
C
563 lines
16 KiB
C
/*
|
|
* QEMU USB HUB 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 "qemu-common.h"
|
|
#include "usb.h"
|
|
|
|
//#define DEBUG
|
|
|
|
#define MAX_PORTS 8
|
|
|
|
typedef struct USBHubPort {
|
|
USBPort port;
|
|
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; */
|
|
0xe0, /* 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[] =
|
|
{
|
|
0x00, /* u8 bLength; patched in later */
|
|
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 */
|
|
|
|
/* DeviceRemovable and PortPwrCtrlMask patched in later */
|
|
};
|
|
|
|
static void usb_hub_attach(USBPort *port1, USBDevice *dev)
|
|
{
|
|
USBHubState *s = port1->opaque;
|
|
USBHubPort *port = &s->ports[port1->index];
|
|
|
|
if (dev) {
|
|
if (port->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->port.dev = dev;
|
|
/* send the attach message */
|
|
usb_send_msg(dev, USB_MSG_ATTACH);
|
|
} else {
|
|
dev = port->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;
|
|
}
|
|
/* send the detach message */
|
|
usb_send_msg(dev, USB_MSG_DETACH);
|
|
port->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 EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
|
|
if (value == 0 && index != 0x81) { /* clear ep halt */
|
|
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));
|
|
|
|
/* status change endpoint size based on number
|
|
* of ports */
|
|
data[22] = (s->nb_ports + 1 + 7) / 8;
|
|
|
|
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->port.dev;
|
|
switch(value) {
|
|
case PORT_SUSPEND:
|
|
port->wPortStatus |= PORT_STAT_SUSPEND;
|
|
break;
|
|
case PORT_RESET:
|
|
if (dev) {
|
|
usb_send_msg(dev, USB_MSG_RESET);
|
|
port->wPortChange |= PORT_STAT_C_RESET;
|
|
/* set enable bit */
|
|
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->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:
|
|
{
|
|
unsigned int n, limit, var_hub_size = 0;
|
|
memcpy(data, qemu_hub_hub_descriptor,
|
|
sizeof(qemu_hub_hub_descriptor));
|
|
data[2] = s->nb_ports;
|
|
|
|
/* fill DeviceRemovable bits */
|
|
limit = ((s->nb_ports + 1 + 7) / 8) + 7;
|
|
for (n = 7; n < limit; n++) {
|
|
data[n] = 0x00;
|
|
var_hub_size++;
|
|
}
|
|
|
|
/* fill PortPwrCtrlMask bits */
|
|
limit = limit + ((s->nb_ports + 7) / 8);
|
|
for (;n < limit; n++) {
|
|
data[n] = 0xff;
|
|
var_hub_size++;
|
|
}
|
|
|
|
ret = sizeof(qemu_hub_hub_descriptor) + var_hub_size;
|
|
data[0] = ret;
|
|
break;
|
|
}
|
|
default:
|
|
fail:
|
|
ret = USB_RET_STALL;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int usb_hub_handle_data(USBDevice *dev, USBPacket *p)
|
|
{
|
|
USBHubState *s = (USBHubState *)dev;
|
|
int ret;
|
|
|
|
switch(p->pid) {
|
|
case USB_TOKEN_IN:
|
|
if (p->devep == 1) {
|
|
USBHubPort *port;
|
|
unsigned int status;
|
|
int i, n;
|
|
n = (s->nb_ports + 1 + 7) / 8;
|
|
if (p->len == 1) { /* FreeBSD workaround */
|
|
n = 1;
|
|
} else if (n > p->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++) {
|
|
p->data[i] = status >> (8 * i);
|
|
}
|
|
ret = n;
|
|
} else {
|
|
ret = USB_RET_NAK; /* usb11 11.13.1 */
|
|
}
|
|
} 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, USBPacket *p)
|
|
{
|
|
USBHubPort *port;
|
|
USBDevice *dev;
|
|
int i, ret;
|
|
|
|
for(i = 0; i < s->nb_ports; i++) {
|
|
port = &s->ports[i];
|
|
dev = port->port.dev;
|
|
if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) {
|
|
ret = dev->info->handle_packet(dev, p);
|
|
if (ret != USB_RET_NODEV) {
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
return USB_RET_NODEV;
|
|
}
|
|
|
|
static int usb_hub_handle_packet(USBDevice *dev, USBPacket *p)
|
|
{
|
|
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 &&
|
|
p->devaddr != dev->addr &&
|
|
(p->pid == USB_TOKEN_SETUP ||
|
|
p->pid == USB_TOKEN_OUT ||
|
|
p->pid == USB_TOKEN_IN)) {
|
|
/* broadcast the packet to the devices */
|
|
return usb_hub_broadcast_packet(s, p);
|
|
}
|
|
return usb_generic_handle_packet(dev, p);
|
|
}
|
|
|
|
static void usb_hub_handle_destroy(USBDevice *dev)
|
|
{
|
|
USBHubState *s = (USBHubState *)dev;
|
|
int i;
|
|
|
|
for (i = 0; i < s->nb_ports; i++) {
|
|
usb_unregister_port(usb_bus_from_device(dev),
|
|
&s->ports[i].port);
|
|
}
|
|
}
|
|
|
|
static int usb_hub_initfn(USBDevice *dev)
|
|
{
|
|
USBHubState *s = DO_UPCAST(USBHubState, dev, dev);
|
|
USBHubPort *port;
|
|
int i;
|
|
|
|
s->dev.speed = USB_SPEED_FULL,
|
|
s->nb_ports = MAX_PORTS; /* FIXME: make configurable */
|
|
for (i = 0; i < s->nb_ports; i++) {
|
|
port = &s->ports[i];
|
|
usb_register_port(usb_bus_from_device(dev),
|
|
&port->port, s, i, usb_hub_attach);
|
|
port->wPortStatus = PORT_STAT_POWER;
|
|
port->wPortChange = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static struct USBDeviceInfo hub_info = {
|
|
.product_desc = "QEMU USB Hub",
|
|
.qdev.name = "usb-hub",
|
|
.qdev.size = sizeof(USBHubState),
|
|
.init = usb_hub_initfn,
|
|
.handle_packet = usb_hub_handle_packet,
|
|
.handle_reset = usb_hub_handle_reset,
|
|
.handle_control = usb_hub_handle_control,
|
|
.handle_data = usb_hub_handle_data,
|
|
.handle_destroy = usb_hub_handle_destroy,
|
|
};
|
|
|
|
static void usb_hub_register_devices(void)
|
|
{
|
|
usb_qdev_register(&hub_info);
|
|
}
|
|
device_init(usb_hub_register_devices)
|