Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
tag: 20121115
Fetching contributors…

Cannot retrieve contributors at this time

395 lines (344 sloc) 10.216 kb
#include "hw.h"
#include "usb.h"
#include "qdev.h"
#include "sysemu.h"
#include "monitor.h"
static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent);
static char *usb_get_dev_path(DeviceState *dev);
static char *usb_get_fw_dev_path(DeviceState *qdev);
static struct BusInfo usb_bus_info = {
.name = "USB",
.size = sizeof(USBBus),
.print_dev = usb_bus_dev_print,
.get_dev_path = usb_get_dev_path,
.get_fw_dev_path = usb_get_fw_dev_path,
.props = (Property[]) {
DEFINE_PROP_STRING("port", USBDevice, port_path),
DEFINE_PROP_END_OF_LIST()
},
};
static int next_usb_bus = 0;
static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses);
const VMStateDescription vmstate_usb_device = {
.name = "USBDevice",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField []) {
VMSTATE_UINT8(addr, USBDevice),
VMSTATE_INT32(state, USBDevice),
VMSTATE_INT32(remote_wakeup, USBDevice),
VMSTATE_INT32(setup_state, USBDevice),
VMSTATE_INT32(setup_len, USBDevice),
VMSTATE_INT32(setup_index, USBDevice),
VMSTATE_UINT8_ARRAY(setup_buf, USBDevice, 8),
VMSTATE_END_OF_LIST(),
}
};
void usb_bus_new(USBBus *bus, DeviceState *host)
{
qbus_create_inplace(&bus->qbus, &usb_bus_info, host, NULL);
bus->busnr = next_usb_bus++;
bus->qbus.allow_hotplug = 1; /* Yes, we can */
QTAILQ_INIT(&bus->free);
QTAILQ_INIT(&bus->used);
QTAILQ_INSERT_TAIL(&busses, bus, next);
}
USBBus *usb_bus_find(int busnr)
{
USBBus *bus;
if (-1 == busnr)
return QTAILQ_FIRST(&busses);
QTAILQ_FOREACH(bus, &busses, next) {
if (bus->busnr == busnr)
return bus;
}
return NULL;
}
static int usb_qdev_init(DeviceState *qdev, DeviceInfo *base)
{
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
USBDeviceInfo *info = DO_UPCAST(USBDeviceInfo, qdev, base);
int rc;
pstrcpy(dev->product_desc, sizeof(dev->product_desc), info->product_desc);
dev->info = info;
dev->auto_attach = 1;
QLIST_INIT(&dev->strings);
rc = dev->info->init(dev);
if (rc == 0 && dev->auto_attach)
usb_device_attach(dev);
return rc;
}
static int usb_qdev_exit(DeviceState *qdev)
{
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
usb_device_detach(dev);
if (dev->info->handle_destroy) {
dev->info->handle_destroy(dev);
}
return 0;
}
void usb_qdev_register(USBDeviceInfo *info)
{
info->qdev.bus_info = &usb_bus_info;
info->qdev.init = usb_qdev_init;
info->qdev.unplug = qdev_simple_unplug_cb;
info->qdev.exit = usb_qdev_exit;
qdev_register(&info->qdev);
}
void usb_qdev_register_many(USBDeviceInfo *info)
{
while (info->qdev.name) {
usb_qdev_register(info);
info++;
}
}
USBDevice *usb_create(USBBus *bus, const char *name)
{
DeviceState *dev;
#if 1
/* temporary stopgap until all usb is properly qdev-ified */
if (!bus) {
bus = usb_bus_find(-1);
if (!bus)
return NULL;
fprintf(stderr, "%s: no bus specified, using \"%s\" for \"%s\"\n",
__FUNCTION__, bus->qbus.name, name);
}
#endif
dev = qdev_create(&bus->qbus, name);
return DO_UPCAST(USBDevice, qdev, dev);
}
USBDevice *usb_create_simple(USBBus *bus, const char *name)
{
USBDevice *dev = usb_create(bus, name);
if (!dev) {
hw_error("Failed to create USB device '%s'\n", name);
}
qdev_init_nofail(&dev->qdev);
return dev;
}
void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
USBPortOps *ops, int speedmask)
{
port->opaque = opaque;
port->index = index;
port->opaque = opaque;
port->index = index;
port->ops = ops;
port->speedmask = speedmask;
QTAILQ_INSERT_TAIL(&bus->free, port, next);
bus->nfree++;
}
void usb_port_location(USBPort *downstream, USBPort *upstream, int portnr)
{
if (upstream) {
snprintf(downstream->path, sizeof(downstream->path), "%s.%d",
upstream->path, portnr);
} else {
snprintf(downstream->path, sizeof(downstream->path), "%d", portnr);
}
}
void usb_unregister_port(USBBus *bus, USBPort *port)
{
if (port->dev)
qdev_free(&port->dev->qdev);
QTAILQ_REMOVE(&bus->free, port, next);
bus->nfree--;
}
static void do_attach(USBDevice *dev)
{
USBBus *bus = usb_bus_from_device(dev);
USBPort *port;
if (dev->attached) {
fprintf(stderr, "Warning: tried to attach usb device %s twice\n",
dev->product_desc);
return;
}
if (dev->port_path) {
QTAILQ_FOREACH(port, &bus->free, next) {
if (strcmp(port->path, dev->port_path) == 0) {
break;
}
}
if (port == NULL) {
fprintf(stderr, "Warning: usb port %s (bus %s) not found\n",
dev->port_path, bus->qbus.name);
return;
}
} else {
port = QTAILQ_FIRST(&bus->free);
}
dev->attached++;
QTAILQ_REMOVE(&bus->free, port, next);
bus->nfree--;
usb_attach(port, dev);
QTAILQ_INSERT_TAIL(&bus->used, port, next);
bus->nused++;
}
int usb_device_attach(USBDevice *dev)
{
USBBus *bus = usb_bus_from_device(dev);
if (bus->nfree == 1 && dev->port_path == NULL) {
/* Create a new hub and chain it on
(unless a physical port location is specified). */
usb_create_simple(bus, "usb-hub");
}
do_attach(dev);
return 0;
}
int usb_device_detach(USBDevice *dev)
{
USBBus *bus = usb_bus_from_device(dev);
USBPort *port;
if (!dev->attached) {
fprintf(stderr, "Warning: tried to detach unattached usb device %s\n",
dev->product_desc);
return -1;
}
dev->attached--;
QTAILQ_FOREACH(port, &bus->used, next) {
if (port->dev == dev)
break;
}
assert(port != NULL);
QTAILQ_REMOVE(&bus->used, port, next);
bus->nused--;
usb_attach(port, NULL);
QTAILQ_INSERT_TAIL(&bus->free, port, next);
bus->nfree++;
return 0;
}
int usb_device_delete_addr(int busnr, int addr)
{
USBBus *bus;
USBPort *port;
USBDevice *dev;
bus = usb_bus_find(busnr);
if (!bus)
return -1;
QTAILQ_FOREACH(port, &bus->used, next) {
if (port->dev->addr == addr)
break;
}
if (!port)
return -1;
dev = port->dev;
qdev_free(&dev->qdev);
return 0;
}
static const char *usb_speed(unsigned int speed)
{
static const char *txt[] = {
[ USB_SPEED_LOW ] = "1.5",
[ USB_SPEED_FULL ] = "12",
[ USB_SPEED_HIGH ] = "480",
};
if (speed >= ARRAY_SIZE(txt))
return "?";
return txt[speed];
}
static void usb_bus_dev_print(Monitor *mon, DeviceState *qdev, int indent)
{
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
USBBus *bus = usb_bus_from_device(dev);
monitor_printf(mon, "%*saddr %d.%d, port %s, speed %s, name %s%s\n",
indent, "", bus->busnr, dev->addr,
dev->port ? dev->port->path : "-",
usb_speed(dev->speed), dev->product_desc,
dev->attached ? ", attached" : "");
}
static char *usb_get_dev_path(DeviceState *qdev)
{
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
return qemu_strdup(dev->port->path);
}
static char *usb_get_fw_dev_path(DeviceState *qdev)
{
USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
char *fw_path, *in;
ssize_t pos = 0, fw_len;
long nr;
fw_len = 32 + strlen(dev->port->path) * 6;
fw_path = qemu_malloc(fw_len);
in = dev->port->path;
while (fw_len - pos > 0) {
nr = strtol(in, &in, 10);
if (in[0] == '.') {
/* some hub between root port and device */
pos += snprintf(fw_path + pos, fw_len - pos, "hub@%ld/", nr);
in++;
} else {
/* the device itself */
pos += snprintf(fw_path + pos, fw_len - pos, "%s@%ld",
qdev_fw_name(qdev), nr);
break;
}
}
return fw_path;
}
void usb_info(Monitor *mon)
{
USBBus *bus;
USBDevice *dev;
USBPort *port;
if (QTAILQ_EMPTY(&busses)) {
monitor_printf(mon, "USB support not enabled\n");
return;
}
QTAILQ_FOREACH(bus, &busses, next) {
QTAILQ_FOREACH(port, &bus->used, next) {
dev = port->dev;
if (!dev)
continue;
monitor_printf(mon, " Device %d.%d, Port %s, Speed %s Mb/s, Product %s\n",
bus->busnr, dev->addr, port->path, usb_speed(dev->speed),
dev->product_desc);
}
}
}
/* handle legacy -usbdevice cmd line option */
USBDevice *usbdevice_create(const char *cmdline)
{
USBBus *bus = usb_bus_find(-1 /* any */);
DeviceInfo *info;
USBDeviceInfo *usb;
char driver[32];
const char *params;
int len;
params = strchr(cmdline,':');
if (params) {
params++;
len = params - cmdline;
if (len > sizeof(driver))
len = sizeof(driver);
pstrcpy(driver, len, cmdline);
} else {
params = "";
pstrcpy(driver, sizeof(driver), cmdline);
}
for (info = device_info_list; info != NULL; info = info->next) {
if (info->bus_info != &usb_bus_info)
continue;
usb = DO_UPCAST(USBDeviceInfo, qdev, info);
if (usb->usbdevice_name == NULL)
continue;
if (strcmp(usb->usbdevice_name, driver) != 0)
continue;
break;
}
if (info == NULL) {
#if 0
/* no error because some drivers are not converted (yet) */
error_report("usbdevice %s not found", driver);
#endif
return NULL;
}
if (!usb->usbdevice_init) {
if (*params) {
error_report("usbdevice %s accepts no params", driver);
return NULL;
}
return usb_create_simple(bus, usb->qdev.name);
}
return usb->usbdevice_init(params);
}
Jump to Line
Something went wrong with that request. Please try again.