[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), info->product_desc);
    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);
    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,
                       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, "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];
    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);
}
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
06384698	46	pstrcpy(dev->product_desc, sizeof(dev->product_desc), info->product_desc);
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);
d44168ff PB	105	if (!dev) {
	106	hw_error("Failed to create USB device '%s'\n", name);
	107	}
e23a1b33	108	qdev_init_nofail(&dev->qdev);
a5d2f727 GH	109	return dev;
	110	}
	111
	112	void usb_register_port(USBBus bus, USBPort port, void *opaque, int index,
	113	usb_attachfn attach)
	114	{
	115	port->opaque = opaque;
	116	port->index = index;
	117	port->attach = attach;
72cf2d4f	118	QTAILQ_INSERT_TAIL(&bus->free, port, next);
a5d2f727 GH	119	bus->nfree++;
	120	}
	121
a8e662b5 GH	122	void usb_unregister_port(USBBus bus, USBPort port)
	123	{
	124	if (port->dev)
	125	qdev_free(&port->dev->qdev);
	126	QTAILQ_REMOVE(&bus->free, port, next);
	127	bus->nfree--;
	128	}
	129
a5d2f727 GH	130	static void do_attach(USBDevice *dev)
	131	{
	132	USBBus *bus = usb_bus_from_device(dev);
	133	USBPort *port;
	134
	135	if (dev->attached) {
	136	fprintf(stderr, "Warning: tried to attach usb device %s twice\n",
0fe6d12e	137	dev->product_desc);
a5d2f727 GH	138	return;
	139	}
	140	dev->attached++;
	141
72cf2d4f BS	142	port = QTAILQ_FIRST(&bus->free);
72cf2d4f BS	143	QTAILQ_REMOVE(&bus->free, port, next);
a5d2f727 GH	144	bus->nfree--;
	145
	146	usb_attach(port, dev);
	147
72cf2d4f	148	QTAILQ_INSERT_TAIL(&bus->used, port, next);
a5d2f727 GH	149	bus->nused++;
	150	}
	151
	152	int usb_device_attach(USBDevice *dev)
	153	{
	154	USBBus *bus = usb_bus_from_device(dev);
	155	USBDevice *hub;
	156
	157	if (bus->nfree == 1) {
	158	/* Create a new hub and chain it on. */
556cd098	159	hub = usb_create_simple(bus, "usb-hub");
a5d2f727 GH	160	}
	161	do_attach(dev);
	162	return 0;
	163	}
	164
a8e662b5 GH	165	int usb_device_detach(USBDevice *dev)
	166	{
	167	USBBus *bus = usb_bus_from_device(dev);
	168	USBPort *port;
	169
	170	if (!dev->attached) {
	171	fprintf(stderr, "Warning: tried to detach unattached usb device %s\n",
0fe6d12e	172	dev->product_desc);
a8e662b5 GH	173	return -1;
	174	}
	175	dev->attached--;
	176
	177	QTAILQ_FOREACH(port, &bus->used, next) {
	178	if (port->dev == dev)
	179	break;
	180	}
	181	assert(port != NULL);
	182
	183	QTAILQ_REMOVE(&bus->used, port, next);
	184	bus->nused--;
	185
	186	usb_attach(port, NULL);
	187
	188	QTAILQ_INSERT_TAIL(&bus->free, port, next);
	189	bus->nfree++;
	190	return 0;
	191	}
	192
a5d2f727 GH	193	int usb_device_delete_addr(int busnr, int addr)
	194	{
	195	USBBus *bus;
	196	USBPort *port;
	197	USBDevice *dev;
	198
	199	bus = usb_bus_find(busnr);
	200	if (!bus)
	201	return -1;
	202
72cf2d4f	203	QTAILQ_FOREACH(port, &bus->used, next) {
a5d2f727 GH	204	if (port->dev->addr == addr)
	205	break;
	206	}
	207	if (!port)
	208	return -1;
a5d2f727	209	dev = port->dev;
a5d2f727	210
a8e662b5	211	qdev_free(&dev->qdev);
a5d2f727 GH	212	return 0;
	213	}
	214
	215	static const char *usb_speed(unsigned int speed)
	216	{
	217	static const char *txt[] = {
	218	[ USB_SPEED_LOW ] = "1.5",
	219	[ USB_SPEED_FULL ] = "12",
	220	[ USB_SPEED_HIGH ] = "480",
	221	};
	222	if (speed >= ARRAY_SIZE(txt))
	223	return "?";
	224	return txt[speed];
	225	}
	226
	227	static void usb_bus_dev_print(Monitor mon, DeviceState qdev, int indent)
	228	{
	229	USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
	230	USBBus *bus = usb_bus_from_device(dev);
	231
66a6593a GH	232	monitor_printf(mon, "%*saddr %d.%d, speed %s, name %s%s\n",
66a6593a GH	233	indent, "", bus->busnr, dev->addr,
0fe6d12e	234	usb_speed(dev->speed), dev->product_desc,
66a6593a	235	dev->attached ? ", attached" : "");
a5d2f727 GH	236	}
	237
	238	void usb_info(Monitor *mon)
	239	{
	240	USBBus *bus;
	241	USBDevice *dev;
	242	USBPort *port;
	243
72cf2d4f	244	if (QTAILQ_EMPTY(&busses)) {
a5d2f727 GH	245	monitor_printf(mon, "USB support not enabled\n");
	246	return;
	247	}
	248
72cf2d4f BS	249	QTAILQ_FOREACH(bus, &busses, next) {
72cf2d4f BS	250	QTAILQ_FOREACH(port, &bus->used, next) {
a5d2f727 GH	251	dev = port->dev;
	252	if (!dev)
	253	continue;
	254	monitor_printf(mon, " Device %d.%d, Speed %s Mb/s, Product %s\n",
0fe6d12e MA	255	bus->busnr, dev->addr, usb_speed(dev->speed),
0fe6d12e MA	256	dev->product_desc);
a5d2f727 GH	257	}
	258	}
	259	}
	260
0958b4cc GH	261	/* handle legacy -usbdevice cmd line option */
	262	USBDevice usbdevice_create(const char cmdline)
	263	{
	264	USBBus bus = usb_bus_find(-1 / any */);
	265	DeviceInfo *info;
	266	USBDeviceInfo *usb;
702f3e0f JK	267	char driver[32];
702f3e0f JK	268	const char *params;
0958b4cc GH	269	int len;
	270
	271	params = strchr(cmdline,':');
	272	if (params) {
	273	params++;
	274	len = params - cmdline;
	275	if (len > sizeof(driver))
	276	len = sizeof(driver);
	277	pstrcpy(driver, len, cmdline);
	278	} else {
702f3e0f	279	params = "";
0958b4cc GH	280	pstrcpy(driver, sizeof(driver), cmdline);
	281	}
	282
	283	for (info = device_info_list; info != NULL; info = info->next) {
	284	if (info->bus_info != &usb_bus_info)
	285	continue;
	286	usb = DO_UPCAST(USBDeviceInfo, qdev, info);
	287	if (usb->usbdevice_name == NULL)
	288	continue;
	289	if (strcmp(usb->usbdevice_name, driver) != 0)
	290	continue;
	291	break;
	292	}
	293	if (info == NULL) {
	294	#if 0
	295	/* no error because some drivers are not converted (yet) */
1ecda02b	296	error_report("usbdevice %s not found", driver);
0958b4cc GH	297	#endif
	298	return NULL;
	299	}
	300
	301	if (!usb->usbdevice_init) {
98f22dc1	302	if (*params) {
1ecda02b	303	error_report("usbdevice %s accepts no params", driver);
0958b4cc GH	304	return NULL;
	305	}
	306	return usb_create_simple(bus, usb->qdev.name);
	307	}
	308	return usb->usbdevice_init(params);
	309	}