[qemu.git] / hw / usb-bus.c

#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 struct BusInfo usb_bus_info = {
    .name      = "USB",
    .size      = sizeof(USBBus),
    .print_dev = usb_bus_dev_print,
};
static int next_usb_bus = 0;
static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses);

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), qdev->info->name);
    dev->info = info;
    dev->auto_attach = 1;
    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);
    qdev_init_nofail(&dev->qdev);
    return dev;
}

void usb_register_port(USBBus *bus, USBPort *port, void *opaque, int index,
                       usb_attachfn attach)
{
    port->opaque = opaque;
    port->index = index;
    port->attach = attach;
    QTAILQ_INSERT_TAIL(&bus->free, port, next);
    bus->nfree++;
}

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;
    }
    dev->attached++;

    port = QTAILQ_FIRST(&bus->free);
    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);
    USBDevice *hub;

    if (bus->nfree == 1) {
        /* Create a new hub and chain it on.  */
        hub = usb_create_simple(bus, "QEMU 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, speed %s, name %s%s\n",
                   indent, "", bus->busnr, dev->addr,
                   usb_speed(dev->speed), dev->product_desc,
                   dev->attached ? ", attached" : "");
}

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, Speed %s Mb/s, Product %s\n",
                           bus->busnr, dev->addr, 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], *params;
    int len;

    params = strchr(cmdline,':');
    if (params) {
        params++;
        len = params - cmdline;
        if (len > sizeof(driver))
            len = sizeof(driver);
        pstrcpy(driver, len, cmdline);
    } else {
        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) */
        qemu_error("usbdevice %s not found\n", driver);
#endif
        return NULL;
    }

    if (!usb->usbdevice_init) {
        if (params) {
            qemu_error("usbdevice %s accepts no params\n", driver);
            return NULL;
        }
        return usb_create_simple(bus, usb->qdev.name);
    }
    return usb->usbdevice_init(params);
}
Commit	Line	Data
806b6024 GH	1	#include "hw.h"
	2	#include "usb.h"
	3	#include "qdev.h"
a5d2f727 GH	4	#include "sysemu.h"
	5	#include "monitor.h"
	6
	7	static void usb_bus_dev_print(Monitor mon, DeviceState qdev, int indent);
806b6024 GH	8
806b6024 GH	9	static struct BusInfo usb_bus_info = {
a5d2f727 GH	10	.name = "USB",
	11	.size = sizeof(USBBus),
	12	.print_dev = usb_bus_dev_print,
806b6024 GH	13	};
806b6024 GH	14	static int next_usb_bus = 0;
72cf2d4f	15	static QTAILQ_HEAD(, USBBus) busses = QTAILQ_HEAD_INITIALIZER(busses);
806b6024	16
b2317837	17	void usb_bus_new(USBBus bus, DeviceState host)
806b6024	18	{
b2317837	19	qbus_create_inplace(&bus->qbus, &usb_bus_info, host, NULL);
806b6024	20	bus->busnr = next_usb_bus++;
ef816d83	21	bus->qbus.allow_hotplug = 1; /* Yes, we can */
72cf2d4f BS	22	QTAILQ_INIT(&bus->free);
	23	QTAILQ_INIT(&bus->used);
	24	QTAILQ_INSERT_TAIL(&busses, bus, next);
806b6024 GH	25	}
	26
	27	USBBus *usb_bus_find(int busnr)
	28	{
	29	USBBus *bus;
	30
	31	if (-1 == busnr)
72cf2d4f BS	32	return QTAILQ_FIRST(&busses);
72cf2d4f BS	33	QTAILQ_FOREACH(bus, &busses, next) {
806b6024 GH	34	if (bus->busnr == busnr)
	35	return bus;
	36	}
	37	return NULL;
	38	}
	39
	40	static int usb_qdev_init(DeviceState qdev, DeviceInfo base)
	41	{
	42	USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
	43	USBDeviceInfo *info = DO_UPCAST(USBDeviceInfo, qdev, base);
	44	int rc;
	45
9df9eeeb	46	pstrcpy(dev->product_desc, sizeof(dev->product_desc), qdev->info->name);
806b6024	47	dev->info = info;
61e094c0	48	dev->auto_attach = 1;
806b6024	49	rc = dev->info->init(dev);
61e094c0	50	if (rc == 0 && dev->auto_attach)
a5d2f727	51	usb_device_attach(dev);
806b6024 GH	52	return rc;
	53	}
	54
a8e662b5 GH	55	static int usb_qdev_exit(DeviceState *qdev)
	56	{
	57	USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
	58
	59	usb_device_detach(dev);
	60	if (dev->info->handle_destroy) {
	61	dev->info->handle_destroy(dev);
	62	}
	63	return 0;
	64	}
	65
806b6024 GH	66	void usb_qdev_register(USBDeviceInfo *info)
	67	{
	68	info->qdev.bus_info = &usb_bus_info;
	69	info->qdev.init = usb_qdev_init;
ef816d83	70	info->qdev.unplug = qdev_simple_unplug_cb;
a8e662b5	71	info->qdev.exit = usb_qdev_exit;
806b6024 GH	72	qdev_register(&info->qdev);
	73	}
	74
	75	void usb_qdev_register_many(USBDeviceInfo *info)
	76	{
	77	while (info->qdev.name) {
	78	usb_qdev_register(info);
	79	info++;
	80	}
	81	}
	82
a5d2f727	83	USBDevice usb_create(USBBus bus, const char *name)
806b6024 GH	84	{
	85	DeviceState *dev;
	86
	87	#if 1
	88	/* temporary stopgap until all usb is properly qdev-ified */
	89	if (!bus) {
	90	bus = usb_bus_find(-1);
	91	if (!bus)
	92	return NULL;
	93	fprintf(stderr, "%s: no bus specified, using \"%s\" for \"%s\"\n",
	94	__FUNCTION__, bus->qbus.name, name);
	95	}
	96	#endif
	97
	98	dev = qdev_create(&bus->qbus, name);
806b6024 GH	99	return DO_UPCAST(USBDevice, qdev, dev);
806b6024 GH	100	}
a5d2f727 GH	101
	102	USBDevice usb_create_simple(USBBus bus, const char *name)
	103	{
	104	USBDevice *dev = usb_create(bus, name);
e23a1b33	105	qdev_init_nofail(&dev->qdev);
a5d2f727 GH	106	return dev;
	107	}
	108
	109	void usb_register_port(USBBus bus, USBPort port, void *opaque, int index,
	110	usb_attachfn attach)
	111	{
	112	port->opaque = opaque;
	113	port->index = index;
	114	port->attach = attach;
72cf2d4f	115	QTAILQ_INSERT_TAIL(&bus->free, port, next);
a5d2f727 GH	116	bus->nfree++;
	117	}
	118
a8e662b5 GH	119	void usb_unregister_port(USBBus bus, USBPort port)
	120	{
	121	if (port->dev)
	122	qdev_free(&port->dev->qdev);
	123	QTAILQ_REMOVE(&bus->free, port, next);
	124	bus->nfree--;
	125	}
	126
a5d2f727 GH	127	static void do_attach(USBDevice *dev)
	128	{
	129	USBBus *bus = usb_bus_from_device(dev);
	130	USBPort *port;
	131
	132	if (dev->attached) {
	133	fprintf(stderr, "Warning: tried to attach usb device %s twice\n",
9df9eeeb	134	dev->product_desc);
a5d2f727 GH	135	return;
	136	}
	137	dev->attached++;
	138
72cf2d4f BS	139	port = QTAILQ_FIRST(&bus->free);
72cf2d4f BS	140	QTAILQ_REMOVE(&bus->free, port, next);
a5d2f727 GH	141	bus->nfree--;
	142
	143	usb_attach(port, dev);
	144
72cf2d4f	145	QTAILQ_INSERT_TAIL(&bus->used, port, next);
a5d2f727 GH	146	bus->nused++;
	147	}
	148
	149	int usb_device_attach(USBDevice *dev)
	150	{
	151	USBBus *bus = usb_bus_from_device(dev);
	152	USBDevice *hub;
	153
	154	if (bus->nfree == 1) {
	155	/* Create a new hub and chain it on. */
	156	hub = usb_create_simple(bus, "QEMU USB Hub");
	157	}
	158	do_attach(dev);
	159	return 0;
	160	}
	161
a8e662b5 GH	162	int usb_device_detach(USBDevice *dev)
	163	{
	164	USBBus *bus = usb_bus_from_device(dev);
	165	USBPort *port;
	166
	167	if (!dev->attached) {
	168	fprintf(stderr, "Warning: tried to detach unattached usb device %s\n",
9df9eeeb	169	dev->product_desc);
a8e662b5 GH	170	return -1;
	171	}
	172	dev->attached--;
	173
	174	QTAILQ_FOREACH(port, &bus->used, next) {
	175	if (port->dev == dev)
	176	break;
	177	}
	178	assert(port != NULL);
	179
	180	QTAILQ_REMOVE(&bus->used, port, next);
	181	bus->nused--;
	182
	183	usb_attach(port, NULL);
	184
	185	QTAILQ_INSERT_TAIL(&bus->free, port, next);
	186	bus->nfree++;
	187	return 0;
	188	}
	189
a5d2f727 GH	190	int usb_device_delete_addr(int busnr, int addr)
	191	{
	192	USBBus *bus;
	193	USBPort *port;
	194	USBDevice *dev;
	195
	196	bus = usb_bus_find(busnr);
	197	if (!bus)
	198	return -1;
	199
72cf2d4f	200	QTAILQ_FOREACH(port, &bus->used, next) {
a5d2f727 GH	201	if (port->dev->addr == addr)
	202	break;
	203	}
	204	if (!port)
	205	return -1;
a5d2f727	206	dev = port->dev;
a5d2f727	207
a8e662b5	208	qdev_free(&dev->qdev);
a5d2f727 GH	209	return 0;
	210	}
	211
	212	static const char *usb_speed(unsigned int speed)
	213	{
	214	static const char *txt[] = {
	215	[ USB_SPEED_LOW ] = "1.5",
	216	[ USB_SPEED_FULL ] = "12",
	217	[ USB_SPEED_HIGH ] = "480",
	218	};
	219	if (speed >= ARRAY_SIZE(txt))
	220	return "?";
	221	return txt[speed];
	222	}
	223
	224	static void usb_bus_dev_print(Monitor mon, DeviceState qdev, int indent)
	225	{
	226	USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
	227	USBBus *bus = usb_bus_from_device(dev);
	228
66a6593a GH	229	monitor_printf(mon, "%*saddr %d.%d, speed %s, name %s%s\n",
66a6593a GH	230	indent, "", bus->busnr, dev->addr,
9df9eeeb	231	usb_speed(dev->speed), dev->product_desc,
66a6593a	232	dev->attached ? ", attached" : "");
a5d2f727 GH	233	}
	234
	235	void usb_info(Monitor *mon)
	236	{
	237	USBBus *bus;
	238	USBDevice *dev;
	239	USBPort *port;
	240
72cf2d4f	241	if (QTAILQ_EMPTY(&busses)) {
a5d2f727 GH	242	monitor_printf(mon, "USB support not enabled\n");
	243	return;
	244	}
	245
72cf2d4f BS	246	QTAILQ_FOREACH(bus, &busses, next) {
72cf2d4f BS	247	QTAILQ_FOREACH(port, &bus->used, next) {
a5d2f727 GH	248	dev = port->dev;
	249	if (!dev)
	250	continue;
	251	monitor_printf(mon, " Device %d.%d, Speed %s Mb/s, Product %s\n",
9df9eeeb MA	252	bus->busnr, dev->addr, usb_speed(dev->speed),
9df9eeeb MA	253	dev->product_desc);
a5d2f727 GH	254	}
	255	}
	256	}
	257
0958b4cc GH	258	/* handle legacy -usbdevice cmd line option */
	259	USBDevice usbdevice_create(const char cmdline)
	260	{
	261	USBBus bus = usb_bus_find(-1 / any */);
	262	DeviceInfo *info;
	263	USBDeviceInfo *usb;
	264	char driver[32], *params;
	265	int len;
	266
	267	params = strchr(cmdline,':');
	268	if (params) {
	269	params++;
	270	len = params - cmdline;
	271	if (len > sizeof(driver))
	272	len = sizeof(driver);
	273	pstrcpy(driver, len, cmdline);
	274	} else {
	275	pstrcpy(driver, sizeof(driver), cmdline);
	276	}
	277
	278	for (info = device_info_list; info != NULL; info = info->next) {
	279	if (info->bus_info != &usb_bus_info)
	280	continue;
	281	usb = DO_UPCAST(USBDeviceInfo, qdev, info);
	282	if (usb->usbdevice_name == NULL)
	283	continue;
	284	if (strcmp(usb->usbdevice_name, driver) != 0)
	285	continue;
	286	break;
	287	}
	288	if (info == NULL) {
	289	#if 0
	290	/* no error because some drivers are not converted (yet) */
	291	qemu_error("usbdevice %s not found\n", driver);
	292	#endif
	293	return NULL;
	294	}
	295
	296	if (!usb->usbdevice_init) {
	297	if (params) {
	298	qemu_error("usbdevice %s accepts no params\n", driver);
	299	return NULL;
	300	}
	301	return usb_create_simple(bus, usb->qdev.name);
	302	}
	303	return usb->usbdevice_init(params);
	304	}