[qemu.git] / hw / usb-hub.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"
#include "usb-desc.h"

//#define DEBUG

#define NUM_PORTS 8

typedef struct USBHubPort {
    USBPort port;
    uint16_t wPortStatus;
    uint16_t wPortChange;
} USBHubPort;

typedef struct USBHubState {
    USBDevice dev;
    USBHubPort ports[NUM_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 */

enum {
    STR_MANUFACTURER = 1,
    STR_PRODUCT,
    STR_SERIALNUMBER,
};

static const USBDescStrings desc_strings = {
    [STR_MANUFACTURER] = "QEMU " QEMU_VERSION,
    [STR_PRODUCT]      = "QEMU USB Hub",
    [STR_SERIALNUMBER] = "314159",
};

static const USBDescIface desc_iface_hub = {
    .bInterfaceNumber              = 0,
    .bNumEndpoints                 = 1,
    .bInterfaceClass               = USB_CLASS_HUB,
    .eps = (USBDescEndpoint[]) {
        {
            .bEndpointAddress      = USB_DIR_IN | 0x01,
            .bmAttributes          = USB_ENDPOINT_XFER_INT,
            .wMaxPacketSize        = 1 + (NUM_PORTS + 7) / 8,
            .bInterval             = 0xff,
        },
    }
};

static const USBDescDevice desc_device_hub = {
    .bcdUSB                        = 0x0110,
    .bDeviceClass                  = USB_CLASS_HUB,
    .bMaxPacketSize0               = 8,
    .bNumConfigurations            = 1,
    .confs = (USBDescConfig[]) {
        {
            .bNumInterfaces        = 1,
            .bConfigurationValue   = 1,
            .bmAttributes          = 0xe0,
            .nif = 1,
            .ifs = &desc_iface_hub,
        },
    },
};

static const USBDesc desc_hub = {
    .id = {
        .idVendor          = 0,
        .idProduct         = 0,
        .bcdDevice         = 0x0101,
        .iManufacturer     = STR_MANUFACTURER,
        .iProduct          = STR_PRODUCT,
        .iSerialNumber     = STR_SERIALNUMBER,
    },
    .full = &desc_device_hub,
    .str  = desc_strings,
};

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)
{
    USBHubState *s = port1->opaque;
    USBHubPort *port = &s->ports[port1->index];

    port->wPortStatus |= PORT_STAT_CONNECTION;
    port->wPortChange |= PORT_STAT_C_CONNECTION;
    if (port->port.dev->speed == USB_SPEED_LOW) {
        port->wPortStatus |= PORT_STAT_LOW_SPEED;
    } else {
        port->wPortStatus &= ~PORT_STAT_LOW_SPEED;
    }
}

static void usb_hub_detach(USBPort *port1)
{
    USBHubState *s = port1->opaque;
    USBHubPort *port = &s->ports[port1->index];

    /* Let upstream know the device on this port is gone */
    s->dev.port->ops->child_detach(s->dev.port, port1->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;
    }
}

static void usb_hub_child_detach(USBPort *port1, USBDevice *child)
{
    USBHubState *s = port1->opaque;

    /* Pass along upstream */
    s->dev.port->ops->child_detach(s->dev.port, child);
}

static void usb_hub_wakeup(USBPort *port1)
{
    USBHubState *s = port1->opaque;
    USBHubPort *port = &s->ports[port1->index];

    if (port->wPortStatus & PORT_STAT_SUSPEND) {
        port->wPortChange |= PORT_STAT_C_SUSPEND;
        usb_wakeup(&s->dev);
    }
}

static void usb_hub_complete(USBPort *port, USBPacket *packet)
{
    USBHubState *s = port->opaque;

    /*
     * Just pass it along upstream for now.
     *
     * If we ever inplement usb 2.0 split transactions this will
     * become a little more complicated ...
     */
    usb_packet_complete(&s->dev, packet);
}

static void usb_hub_handle_reset(USBDevice *dev)
{
    /* XXX: do it */
}

static int usb_hub_handle_control(USBDevice *dev, USBPacket *p,
               int request, int value, int index, int length, uint8_t *data)
{
    USBHubState *s = (USBHubState *)dev;
    int ret;

    ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
    if (ret >= 0) {
        return ret;
    }

    switch(request) {
    case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
        if (value == 0 && index != 0x81) { /* clear ep halt */
            goto fail;
        }
        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 >= NUM_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 >= NUM_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;

            if (n >= NUM_PORTS) {
                goto fail;
            }
            port = &s->ports[n];
            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] = NUM_PORTS;

            /* fill DeviceRemovable bits */
            limit = ((NUM_PORTS + 1 + 7) / 8) + 7;
            for (n = 7; n < limit; n++) {
                data[n] = 0x00;
                var_hub_size++;
            }

            /* fill PortPwrCtrlMask bits */
            limit = limit + ((NUM_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;
            uint8_t buf[4];
            int i, n;
            n = (NUM_PORTS + 1 + 7) / 8;
            if (p->iov.size == 1) { /* FreeBSD workaround */
                n = 1;
            } else if (n > p->iov.size) {
                return USB_RET_BABBLE;
            }
            status = 0;
            for(i = 0; i < NUM_PORTS; i++) {
                port = &s->ports[i];
                if (port->wPortChange)
                    status |= (1 << (i + 1));
            }
            if (status != 0) {
                for(i = 0; i < n; i++) {
                    buf[i] = status >> (8 * i);
                }
                usb_packet_copy(p, buf, n);
                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 < NUM_PORTS; i++) {
        port = &s->ports[i];
        dev = port->port.dev;
        if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) {
            ret = usb_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 < NUM_PORTS; i++) {
        usb_unregister_port(usb_bus_from_device(dev),
                            &s->ports[i].port);
    }
}

static USBPortOps usb_hub_port_ops = {
    .attach = usb_hub_attach,
    .detach = usb_hub_detach,
    .child_detach = usb_hub_child_detach,
    .wakeup = usb_hub_wakeup,
    .complete = usb_hub_complete,
};

static int usb_hub_initfn(USBDevice *dev)
{
    USBHubState *s = DO_UPCAST(USBHubState, dev, dev);
    USBHubPort *port;
    int i;

    usb_desc_init(dev);
    for (i = 0; i < NUM_PORTS; i++) {
        port = &s->ports[i];
        usb_register_port(usb_bus_from_device(dev),
                          &port->port, s, i, &usb_hub_port_ops,
                          USB_SPEED_MASK_LOW | USB_SPEED_MASK_FULL);
        usb_port_location(&port->port, dev->port, i+1);
        port->wPortStatus = PORT_STAT_POWER;
        port->wPortChange = 0;
    }
    return 0;
}

static const VMStateDescription vmstate_usb_hub_port = {
    .name = "usb-hub-port",
    .version_id = 1,
    .minimum_version_id = 1,
    .fields = (VMStateField []) {
        VMSTATE_UINT16(wPortStatus, USBHubPort),
        VMSTATE_UINT16(wPortChange, USBHubPort),
        VMSTATE_END_OF_LIST()
    }
};

static const VMStateDescription vmstate_usb_hub = {
    .name = "usb-hub",
    .version_id = 1,
    .minimum_version_id = 1,
    .fields = (VMStateField []) {
        VMSTATE_USB_DEVICE(dev, USBHubState),
        VMSTATE_STRUCT_ARRAY(ports, USBHubState, NUM_PORTS, 0,
                             vmstate_usb_hub_port, USBHubPort),
        VMSTATE_END_OF_LIST()
    }
};

static struct USBDeviceInfo hub_info = {
    .product_desc   = "QEMU USB Hub",
    .qdev.name      = "usb-hub",
    .qdev.fw_name    = "hub",
    .qdev.size      = sizeof(USBHubState),
    .qdev.vmsd      = &vmstate_usb_hub,
    .usb_desc       = &desc_hub,
    .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)
Commit	Line	Data
72899afc FB	1	/*
	2	* QEMU USB HUB emulation
	3	*
	4	* Copyright (c) 2005 Fabrice Bellard
5fafdf24	5	*
72899afc FB	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
87ecb68b PB	24	#include "qemu-common.h"
87ecb68b PB	25	#include "usb.h"
062651c7	26	#include "usb-desc.h"
72899afc FB	27
	28	//#define DEBUG
	29
062651c7	30	#define NUM_PORTS 8
72899afc FB	31
	32	typedef struct USBHubPort {
	33	USBPort port;
	34	uint16_t wPortStatus;
	35	uint16_t wPortChange;
	36	} USBHubPort;
	37
	38	typedef struct USBHubState {
	39	USBDevice dev;
062651c7	40	USBHubPort ports[NUM_PORTS];
72899afc FB	41	} USBHubState;
	42
	43	#define ClearHubFeature (0x2000 \| USB_REQ_CLEAR_FEATURE)
	44	#define ClearPortFeature (0x2300 \| USB_REQ_CLEAR_FEATURE)
	45	#define GetHubDescriptor (0xa000 \| USB_REQ_GET_DESCRIPTOR)
	46	#define GetHubStatus (0xa000 \| USB_REQ_GET_STATUS)
	47	#define GetPortStatus (0xa300 \| USB_REQ_GET_STATUS)
	48	#define SetHubFeature (0x2000 \| USB_REQ_SET_FEATURE)
	49	#define SetPortFeature (0x2300 \| USB_REQ_SET_FEATURE)
	50
	51	#define PORT_STAT_CONNECTION 0x0001
	52	#define PORT_STAT_ENABLE 0x0002
	53	#define PORT_STAT_SUSPEND 0x0004
	54	#define PORT_STAT_OVERCURRENT 0x0008
	55	#define PORT_STAT_RESET 0x0010
	56	#define PORT_STAT_POWER 0x0100
	57	#define PORT_STAT_LOW_SPEED 0x0200
	58	#define PORT_STAT_HIGH_SPEED 0x0400
	59	#define PORT_STAT_TEST 0x0800
	60	#define PORT_STAT_INDICATOR 0x1000
	61
	62	#define PORT_STAT_C_CONNECTION 0x0001
	63	#define PORT_STAT_C_ENABLE 0x0002
	64	#define PORT_STAT_C_SUSPEND 0x0004
	65	#define PORT_STAT_C_OVERCURRENT 0x0008
	66	#define PORT_STAT_C_RESET 0x0010
	67
	68	#define PORT_CONNECTION 0
	69	#define PORT_ENABLE 1
	70	#define PORT_SUSPEND 2
	71	#define PORT_OVERCURRENT 3
	72	#define PORT_RESET 4
	73	#define PORT_POWER 8
	74	#define PORT_LOWSPEED 9
	75	#define PORT_HIGHSPEED 10
	76	#define PORT_C_CONNECTION 16
	77	#define PORT_C_ENABLE 17
	78	#define PORT_C_SUSPEND 18
	79	#define PORT_C_OVERCURRENT 19
	80	#define PORT_C_RESET 20
	81	#define PORT_TEST 21
	82	#define PORT_INDICATOR 22
	83
	84	/* same as Linux kernel root hubs */
	85
062651c7 GH	86	enum {
	87	STR_MANUFACTURER = 1,
	88	STR_PRODUCT,
	89	STR_SERIALNUMBER,
	90	};
	91
	92	static const USBDescStrings desc_strings = {
	93	[STR_MANUFACTURER] = "QEMU " QEMU_VERSION,
	94	[STR_PRODUCT] = "QEMU USB Hub",
	95	[STR_SERIALNUMBER] = "314159",
	96	};
	97
	98	static const USBDescIface desc_iface_hub = {
	99	.bInterfaceNumber = 0,
	100	.bNumEndpoints = 1,
	101	.bInterfaceClass = USB_CLASS_HUB,
	102	.eps = (USBDescEndpoint[]) {
	103	{
	104	.bEndpointAddress = USB_DIR_IN \| 0x01,
	105	.bmAttributes = USB_ENDPOINT_XFER_INT,
	106	.wMaxPacketSize = 1 + (NUM_PORTS + 7) / 8,
	107	.bInterval = 0xff,
	108	},
	109	}
	110	};
	111
	112	static const USBDescDevice desc_device_hub = {
	113	.bcdUSB = 0x0110,
	114	.bDeviceClass = USB_CLASS_HUB,
	115	.bMaxPacketSize0 = 8,
	116	.bNumConfigurations = 1,
	117	.confs = (USBDescConfig[]) {
	118	{
	119	.bNumInterfaces = 1,
	120	.bConfigurationValue = 1,
	121	.bmAttributes = 0xe0,
add75088	122	.nif = 1,
062651c7 GH	123	.ifs = &desc_iface_hub,
	124	},
	125	},
	126	};
	127
	128	static const USBDesc desc_hub = {
	129	.id = {
	130	.idVendor = 0,
	131	.idProduct = 0,
	132	.bcdDevice = 0x0101,
	133	.iManufacturer = STR_MANUFACTURER,
	134	.iProduct = STR_PRODUCT,
	135	.iSerialNumber = STR_SERIALNUMBER,
	136	},
	137	.full = &desc_device_hub,
	138	.str = desc_strings,
	139	};
	140
72899afc FB	141	static const uint8_t qemu_hub_hub_descriptor[] =
72899afc FB	142	{
67f36560	143	0x00, /* u8 bLength; patched in later */
72899afc FB	144	0x29, /* u8 bDescriptorType; Hub-descriptor */
	145	0x00, /* u8 bNbrPorts; (patched later) */
	146	0x0a, /* u16 wHubCharacteristics; */
	147	0x00, /* (per-port OC, no power switching) */
	148	0x01, /* u8 bPwrOn2pwrGood; 2ms */
985d1742 FB	149	0x00 /* u8 bHubContrCurrent; 0 mA */
	150
	151	/* DeviceRemovable and PortPwrCtrlMask patched in later */
72899afc FB	152	};
72899afc FB	153
618c169b	154	static void usb_hub_attach(USBPort *port1)
72899afc FB	155	{
	156	USBHubState *s = port1->opaque;
	157	USBHubPort *port = &s->ports[port1->index];
3b46e624	158
618c169b GH	159	port->wPortStatus \|= PORT_STAT_CONNECTION;
	160	port->wPortChange \|= PORT_STAT_C_CONNECTION;
	161	if (port->port.dev->speed == USB_SPEED_LOW) {
	162	port->wPortStatus \|= PORT_STAT_LOW_SPEED;
72899afc	163	} else {
618c169b GH	164	port->wPortStatus &= ~PORT_STAT_LOW_SPEED;
	165	}
	166	}
	167
	168	static void usb_hub_detach(USBPort *port1)
	169	{
	170	USBHubState *s = port1->opaque;
	171	USBHubPort *port = &s->ports[port1->index];
	172
4706ab6c HG	173	/* Let upstream know the device on this port is gone */
	174	s->dev.port->ops->child_detach(s->dev.port, port1->dev);
	175
618c169b GH	176	port->wPortStatus &= ~PORT_STAT_CONNECTION;
	177	port->wPortChange \|= PORT_STAT_C_CONNECTION;
	178	if (port->wPortStatus & PORT_STAT_ENABLE) {
	179	port->wPortStatus &= ~PORT_STAT_ENABLE;
	180	port->wPortChange \|= PORT_STAT_C_ENABLE;
72899afc FB	181	}
	182	}
	183
4706ab6c HG	184	static void usb_hub_child_detach(USBPort port1, USBDevice child)
	185	{
	186	USBHubState *s = port1->opaque;
	187
	188	/* Pass along upstream */
	189	s->dev.port->ops->child_detach(s->dev.port, child);
	190	}
	191
d47e59b8	192	static void usb_hub_wakeup(USBPort *port1)
34239c7b	193	{
d47e59b8 HG	194	USBHubState *s = port1->opaque;
d47e59b8 HG	195	USBHubPort *port = &s->ports[port1->index];
34239c7b GH	196
	197	if (port->wPortStatus & PORT_STAT_SUSPEND) {
	198	port->wPortChange \|= PORT_STAT_C_SUSPEND;
	199	usb_wakeup(&s->dev);
	200	}
	201	}
	202
d47e59b8	203	static void usb_hub_complete(USBPort port, USBPacket packet)
13a9a0d3	204	{
d47e59b8	205	USBHubState *s = port->opaque;
13a9a0d3 GH	206
	207	/*
	208	* Just pass it along upstream for now.
	209	*
	210	* If we ever inplement usb 2.0 split transactions this will
	211	* become a little more complicated ...
	212	*/
	213	usb_packet_complete(&s->dev, packet);
	214	}
	215
059809e4	216	static void usb_hub_handle_reset(USBDevice *dev)
72899afc FB	217	{
	218	/* XXX: do it */
	219	}
	220
007fd62f HG	221	static int usb_hub_handle_control(USBDevice dev, USBPacket p,
007fd62f HG	222	int request, int value, int index, int length, uint8_t *data)
72899afc FB	223	{
	224	USBHubState s = (USBHubState )dev;
	225	int ret;
	226
007fd62f	227	ret = usb_desc_handle_control(dev, p, request, value, index, length, data);
062651c7 GH	228	if (ret >= 0) {
	229	return ret;
	230	}
	231
72899afc	232	switch(request) {
985d1742 FB	233	case EndpointOutRequest \| USB_REQ_CLEAR_FEATURE:
	234	if (value == 0 && index != 0x81) { /* clear ep halt */
	235	goto fail;
	236	}
	237	ret = 0;
	238	break;
72899afc FB	239	case DeviceRequest \| USB_REQ_GET_INTERFACE:
	240	data[0] = 0;
	241	ret = 1;
	242	break;
	243	case DeviceOutRequest \| USB_REQ_SET_INTERFACE:
	244	ret = 0;
	245	break;
	246	/* usb specific requests */
	247	case GetHubStatus:
	248	data[0] = 0;
	249	data[1] = 0;
	250	data[2] = 0;
	251	data[3] = 0;
	252	ret = 4;
	253	break;
	254	case GetPortStatus:
	255	{
	256	unsigned int n = index - 1;
	257	USBHubPort *port;
062651c7	258	if (n >= NUM_PORTS) {
72899afc	259	goto fail;
062651c7	260	}
72899afc FB	261	port = &s->ports[n];
	262	data[0] = port->wPortStatus;
	263	data[1] = port->wPortStatus >> 8;
	264	data[2] = port->wPortChange;
	265	data[3] = port->wPortChange >> 8;
	266	ret = 4;
	267	}
	268	break;
	269	case SetHubFeature:
	270	case ClearHubFeature:
	271	if (value == 0 \|\| value == 1) {
	272	} else {
	273	goto fail;
	274	}
	275	ret = 0;
	276	break;
	277	case SetPortFeature:
	278	{
	279	unsigned int n = index - 1;
	280	USBHubPort *port;
	281	USBDevice *dev;
062651c7	282	if (n >= NUM_PORTS) {
72899afc	283	goto fail;
062651c7	284	}
72899afc FB	285	port = &s->ports[n];
	286	dev = port->port.dev;
	287	switch(value) {
	288	case PORT_SUSPEND:
	289	port->wPortStatus \|= PORT_STAT_SUSPEND;
	290	break;
	291	case PORT_RESET:
	292	if (dev) {
4d611c9a	293	usb_send_msg(dev, USB_MSG_RESET);
72899afc FB	294	port->wPortChange \|= PORT_STAT_C_RESET;
72899afc FB	295	/* set enable bit */
72899afc FB	296	port->wPortStatus \|= PORT_STAT_ENABLE;
	297	}
	298	break;
	299	case PORT_POWER:
	300	break;
	301	default:
	302	goto fail;
	303	}
	304	ret = 0;
	305	}
	306	break;
	307	case ClearPortFeature:
	308	{
	309	unsigned int n = index - 1;
	310	USBHubPort *port;
d4c4e6fd	311
062651c7	312	if (n >= NUM_PORTS) {
72899afc	313	goto fail;
062651c7	314	}
72899afc	315	port = &s->ports[n];
72899afc FB	316	switch(value) {
	317	case PORT_ENABLE:
	318	port->wPortStatus &= ~PORT_STAT_ENABLE;
	319	break;
	320	case PORT_C_ENABLE:
	321	port->wPortChange &= ~PORT_STAT_C_ENABLE;
	322	break;
	323	case PORT_SUSPEND:
	324	port->wPortStatus &= ~PORT_STAT_SUSPEND;
	325	break;
	326	case PORT_C_SUSPEND:
	327	port->wPortChange &= ~PORT_STAT_C_SUSPEND;
	328	break;
	329	case PORT_C_CONNECTION:
	330	port->wPortChange &= ~PORT_STAT_C_CONNECTION;
	331	break;
	332	case PORT_C_OVERCURRENT:
	333	port->wPortChange &= ~PORT_STAT_C_OVERCURRENT;
	334	break;
	335	case PORT_C_RESET:
	336	port->wPortChange &= ~PORT_STAT_C_RESET;
	337	break;
	338	default:
	339	goto fail;
	340	}
	341	ret = 0;
	342	}
	343	break;
	344	case GetHubDescriptor:
985d1742 FB	345	{
985d1742 FB	346	unsigned int n, limit, var_hub_size = 0;
5fafdf24	347	memcpy(data, qemu_hub_hub_descriptor,
985d1742	348	sizeof(qemu_hub_hub_descriptor));
062651c7	349	data[2] = NUM_PORTS;
985d1742 FB	350
985d1742 FB	351	/* fill DeviceRemovable bits */
062651c7	352	limit = ((NUM_PORTS + 1 + 7) / 8) + 7;
985d1742 FB	353	for (n = 7; n < limit; n++) {
	354	data[n] = 0x00;
	355	var_hub_size++;
	356	}
	357
	358	/* fill PortPwrCtrlMask bits */
062651c7	359	limit = limit + ((NUM_PORTS + 7) / 8);
985d1742 FB	360	for (;n < limit; n++) {
	361	data[n] = 0xff;
	362	var_hub_size++;
	363	}
	364
	365	ret = sizeof(qemu_hub_hub_descriptor) + var_hub_size;
67f36560	366	data[0] = ret;
985d1742 FB	367	break;
985d1742 FB	368	}
72899afc FB	369	default:
	370	fail:
	371	ret = USB_RET_STALL;
	372	break;
	373	}
	374	return ret;
	375	}
	376
4d611c9a	377	static int usb_hub_handle_data(USBDevice dev, USBPacket p)
72899afc FB	378	{
	379	USBHubState s = (USBHubState )dev;
	380	int ret;
	381
4d611c9a	382	switch(p->pid) {
72899afc	383	case USB_TOKEN_IN:
4d611c9a	384	if (p->devep == 1) {
72899afc FB	385	USBHubPort *port;
72899afc FB	386	unsigned int status;
4f4321c1	387	uint8_t buf[4];
72899afc	388	int i, n;
062651c7	389	n = (NUM_PORTS + 1 + 7) / 8;
4f4321c1	390	if (p->iov.size == 1) { /* FreeBSD workaround */
985d1742	391	n = 1;
4f4321c1	392	} else if (n > p->iov.size) {
72899afc	393	return USB_RET_BABBLE;
985d1742	394	}
72899afc	395	status = 0;
062651c7	396	for(i = 0; i < NUM_PORTS; i++) {
72899afc FB	397	port = &s->ports[i];
	398	if (port->wPortChange)
	399	status \|= (1 << (i + 1));
	400	}
	401	if (status != 0) {
	402	for(i = 0; i < n; i++) {
4f4321c1	403	buf[i] = status >> (8 * i);
72899afc	404	}
4f4321c1	405	usb_packet_copy(p, buf, n);
72899afc FB	406	ret = n;
72899afc FB	407	} else {
985d1742	408	ret = USB_RET_NAK; /* usb11 11.13.1 */
72899afc FB	409	}
	410	} else {
	411	goto fail;
	412	}
	413	break;
	414	case USB_TOKEN_OUT:
	415	default:
	416	fail:
	417	ret = USB_RET_STALL;
	418	break;
	419	}
	420	return ret;
	421	}
	422
4d611c9a	423	static int usb_hub_broadcast_packet(USBHubState s, USBPacket p)
72899afc FB	424	{
	425	USBHubPort *port;
	426	USBDevice *dev;
	427	int i, ret;
	428
062651c7	429	for(i = 0; i < NUM_PORTS; i++) {
72899afc FB	430	port = &s->ports[i];
	431	dev = port->port.dev;
	432	if (dev && (port->wPortStatus & PORT_STAT_ENABLE)) {
53aa8c0e	433	ret = usb_handle_packet(dev, p);
72899afc FB	434	if (ret != USB_RET_NODEV) {
	435	return ret;
	436	}
	437	}
	438	}
	439	return USB_RET_NODEV;
	440	}
	441
4d611c9a	442	static int usb_hub_handle_packet(USBDevice dev, USBPacket p)
72899afc FB	443	{
	444	USBHubState s = (USBHubState )dev;
	445
	446	#if defined(DEBUG) && 0
	447	printf("usb_hub: pid=0x%x\n", pid);
	448	#endif
	449	if (dev->state == USB_STATE_DEFAULT &&
	450	dev->addr != 0 &&
4d611c9a	451	p->devaddr != dev->addr &&
5fafdf24 TS	452	(p->pid == USB_TOKEN_SETUP \|\|
5fafdf24 TS	453	p->pid == USB_TOKEN_OUT \|\|
4d611c9a	454	p->pid == USB_TOKEN_IN)) {
72899afc	455	/* broadcast the packet to the devices */
4d611c9a	456	return usb_hub_broadcast_packet(s, p);
72899afc	457	}
4d611c9a	458	return usb_generic_handle_packet(dev, p);
72899afc FB	459	}
72899afc FB	460
059809e4 FB	461	static void usb_hub_handle_destroy(USBDevice *dev)
	462	{
	463	USBHubState s = (USBHubState )dev;
a8e662b5	464	int i;
059809e4	465
062651c7	466	for (i = 0; i < NUM_PORTS; i++) {
a8e662b5 GH	467	usb_unregister_port(usb_bus_from_device(dev),
	468	&s->ports[i].port);
	469	}
059809e4 FB	470	}
059809e4 FB	471
0d86d2be GH	472	static USBPortOps usb_hub_port_ops = {
0d86d2be GH	473	.attach = usb_hub_attach,
618c169b	474	.detach = usb_hub_detach,
4706ab6c	475	.child_detach = usb_hub_child_detach,
34239c7b	476	.wakeup = usb_hub_wakeup,
13a9a0d3	477	.complete = usb_hub_complete,
0d86d2be GH	478	};
0d86d2be GH	479
806b6024	480	static int usb_hub_initfn(USBDevice *dev)
72899afc	481	{
806b6024	482	USBHubState *s = DO_UPCAST(USBHubState, dev, dev);
72899afc FB	483	USBHubPort *port;
	484	int i;
	485
a980a065	486	usb_desc_init(dev);
062651c7	487	for (i = 0; i < NUM_PORTS; i++) {
72899afc	488	port = &s->ports[i];
a5d2f727	489	usb_register_port(usb_bus_from_device(dev),
ace1318b	490	&port->port, s, i, &usb_hub_port_ops,
843d4e0c	491	USB_SPEED_MASK_LOW \| USB_SPEED_MASK_FULL);
891fb2cd	492	usb_port_location(&port->port, dev->port, i+1);
72899afc FB	493	port->wPortStatus = PORT_STAT_POWER;
72899afc FB	494	port->wPortChange = 0;
72899afc	495	}
806b6024 GH	496	return 0;
	497	}
	498
d1550090 GH	499	static const VMStateDescription vmstate_usb_hub_port = {
	500	.name = "usb-hub-port",
	501	.version_id = 1,
	502	.minimum_version_id = 1,
	503	.fields = (VMStateField []) {
	504	VMSTATE_UINT16(wPortStatus, USBHubPort),
	505	VMSTATE_UINT16(wPortChange, USBHubPort),
	506	VMSTATE_END_OF_LIST()
	507	}
	508	};
	509
	510	static const VMStateDescription vmstate_usb_hub = {
	511	.name = "usb-hub",
	512	.version_id = 1,
	513	.minimum_version_id = 1,
	514	.fields = (VMStateField []) {
	515	VMSTATE_USB_DEVICE(dev, USBHubState),
	516	VMSTATE_STRUCT_ARRAY(ports, USBHubState, NUM_PORTS, 0,
	517	vmstate_usb_hub_port, USBHubPort),
	518	VMSTATE_END_OF_LIST()
	519	}
	520	};
	521
806b6024	522	static struct USBDeviceInfo hub_info = {
06384698	523	.product_desc = "QEMU USB Hub",
556cd098	524	.qdev.name = "usb-hub",
779206de	525	.qdev.fw_name = "hub",
806b6024	526	.qdev.size = sizeof(USBHubState),
d1550090	527	.qdev.vmsd = &vmstate_usb_hub,
062651c7	528	.usb_desc = &desc_hub,
806b6024 GH	529	.init = usb_hub_initfn,
	530	.handle_packet = usb_hub_handle_packet,
	531	.handle_reset = usb_hub_handle_reset,
	532	.handle_control = usb_hub_handle_control,
	533	.handle_data = usb_hub_handle_data,
	534	.handle_destroy = usb_hub_handle_destroy,
	535	};
	536
	537	static void usb_hub_register_devices(void)
	538	{
	539	usb_qdev_register(&hub_info);
72899afc	540	}
806b6024	541	device_init(usb_hub_register_devices)