コード例 #1
0
ファイル: sysfs.c プロジェクト: Albinoman887/pyramid-3.4.10
static ssize_t
show_removable(struct device *dev, struct device_attribute *attr, char *buf)
{
	struct usb_device *udev;
	char *state;

	udev = to_usb_device(dev);

	switch (udev->removable) {
	case USB_DEVICE_REMOVABLE:
		state = "removable";
		break;
	case USB_DEVICE_FIXED:
		state = "fixed";
		break;
	default:
		state = "unknown";
	}

	return sprintf(buf, "%s\n", state);
}
コード例 #2
0
static ssize_t
set_autosuspend(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	struct usb_device *udev = to_usb_device(dev);
	int value;

	if (sscanf(buf, "%d", &value) != 1 || value >= INT_MAX/HZ ||
			value <= - INT_MAX/HZ)
		return -EINVAL;
	value *= HZ;

	udev->autosuspend_delay = value;
	if (value >= 0)
		usb_try_autosuspend_device(udev);
	else {
		if (usb_autoresume_device(udev) == 0)
			usb_autosuspend_device(udev);
	}
	return count;
}
コード例 #3
0
ファイル: usb.c プロジェクト: 7799/linux
static void _usb_writeN_sync(struct rtl_priv *rtlpriv, u32 addr, void *data,
			     u16 len)
{
	struct device *dev = rtlpriv->io.dev;
	struct usb_device *udev = to_usb_device(dev);
	u8 request = REALTEK_USB_VENQT_CMD_REQ;
	u8 reqtype =  REALTEK_USB_VENQT_WRITE;
	u16 wvalue;
	u16 index = REALTEK_USB_VENQT_CMD_IDX;
	int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
	u8 *buffer;

	wvalue = (u16)(addr & 0x0000ffff);
	buffer = kmemdup(data, len, GFP_ATOMIC);
	if (!buffer)
		return;
	usb_control_msg(udev, pipe, request, reqtype, wvalue,
			index, buffer, len, 50);

	kfree(buffer);
}
コード例 #4
0
ファイル: sysfs.c プロジェクト: Codefollows/ps4-linux
static ssize_t
read_descriptors(struct file *filp, struct kobject *kobj,
		struct bin_attribute *attr,
		char *buf, loff_t off, size_t count)
{
	struct device *dev = container_of(kobj, struct device, kobj);
	struct usb_device *udev = to_usb_device(dev);
	size_t nleft = count;
	size_t srclen, n;
	int cfgno;
	void *src;

	/* The binary attribute begins with the device descriptor.
	 * Following that are the raw descriptor entries for all the
	 * configurations (config plus subsidiary descriptors).
	 */
	usb_lock_device(udev);
	for (cfgno = -1; cfgno < udev->descriptor.bNumConfigurations &&
			nleft > 0; ++cfgno) {
		if (cfgno < 0) {
			src = &udev->descriptor;
			srclen = sizeof(struct usb_device_descriptor);
		} else {
			src = udev->rawdescriptors[cfgno];
			srclen = __le16_to_cpu(udev->config[cfgno].desc.
					wTotalLength);
		}
		if (off < srclen) {
			n = min(nleft, srclen - (size_t) off);
			memcpy(buf, src + off, n);
			nleft -= n;
			buf += n;
			off = 0;
		} else {
			off -= srclen;
		}
	}
	usb_unlock_device(udev);
	return count - nleft;
}
コード例 #5
0
ファイル: port.c プロジェクト: abhinav90/linux
static int usb_port_runtime_suspend(struct device *dev)
{
	struct usb_port *port_dev = to_usb_port(dev);
	struct usb_device *hdev = to_usb_device(dev->parent->parent);
	struct usb_interface *intf = to_usb_interface(dev->parent);
	struct usb_hub *hub = usb_hub_to_struct_hub(hdev);
	struct usb_port *peer = port_dev->peer;
	int port1 = port_dev->portnum;
	int retval;

	if (!hub)
		return -EINVAL;
	if (hub->in_reset)
		return -EBUSY;

	if (dev_pm_qos_flags(&port_dev->dev, PM_QOS_FLAG_NO_POWER_OFF)
			== PM_QOS_FLAGS_ALL)
		return -EAGAIN;

	if (usb_port_block_power_off)
		return -EBUSY;

	usb_autopm_get_interface(intf);
	retval = usb_hub_set_port_power(hdev, hub, port1, false);
	usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_CONNECTION);
	if (!port_dev->is_superspeed)
		usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_ENABLE);
	usb_autopm_put_interface(intf);

	/*
	 * Our peer usb3 port may now be able to suspend, so
	 * asynchronously queue a suspend request to observe that this
	 * usb2 port is now off.
	 */
	if (!port_dev->is_superspeed && peer)
		pm_runtime_put(&peer->dev);

	return retval;
}
コード例 #6
0
ファイル: sysfs.c プロジェクト: jue-jiang/rc3-linux
static ssize_t
set_usb2_hardware_lpm(struct device *dev, struct device_attribute *attr,
		const char *buf, size_t count)
{
	struct usb_device *udev = to_usb_device(dev);
	bool value;
	int ret;

	usb_lock_device(udev);

	ret = strtobool(buf, &value);

	if (!ret)
		ret = usb_set_usb2_hardware_lpm(udev, value);

	usb_unlock_device(udev);

	if (!ret)
		return count;

	return ret;
}
コード例 #7
0
static u32 _usb_read_sync(struct rtl_priv *rtlpriv, u32 addr, u16 len)
{
	struct device *dev = rtlpriv->io.dev;
	struct usb_device *udev = to_usb_device(dev);
	u8 request;
	u16 wvalue;
	u16 index;
	__le32 *data;
	unsigned long flags;

	spin_lock_irqsave(&rtlpriv->locks.usb_lock, flags);
	if (++rtlpriv->usb_data_index >= RTL_USB_MAX_RX_COUNT)
		rtlpriv->usb_data_index = 0;
	data = &rtlpriv->usb_data[rtlpriv->usb_data_index];
	spin_unlock_irqrestore(&rtlpriv->locks.usb_lock, flags);
	request = REALTEK_USB_VENQT_CMD_REQ;
	index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */

	wvalue = (u16)addr;
	_usbctrl_vendorreq_sync_read(udev, request, wvalue, index, data, len);
	return le32_to_cpu(*data);
}
コード例 #8
0
static int usb_port_runtime_resume(struct device *dev)
{
	struct usb_port *port_dev = to_usb_port(dev);
	struct usb_device *hdev = to_usb_device(dev->parent->parent);
	struct usb_interface *intf = to_usb_interface(dev->parent);
	struct usb_hub *hub = usb_hub_to_struct_hub(hdev);
	int port1 = port_dev->portnum;
	int retval;

	if (!hub)
		return -EINVAL;

	usb_autopm_get_interface(intf);
	set_bit(port1, hub->busy_bits);

	retval = usb_hub_set_port_power(hdev, hub, port1, true);
	if (port_dev->child && !retval) {
		/*
		 * Wait for usb hub port to be reconnected in order to make
		 * the resume procedure successful.
		 */
		retval = hub_port_debounce_be_connected(hub, port1);
		if (retval < 0) {
			dev_dbg(&port_dev->dev, "can't get reconnection after setting port  power on, status %d\n",
					retval);
			goto out;
		}
		usb_clear_port_feature(hdev, port1, USB_PORT_FEAT_C_ENABLE);

		/* Set return value to 0 if debounce successful */
		retval = 0;
	}

out:
	clear_bit(port1, hub->busy_bits);
	usb_autopm_put_interface(intf);
	return retval;
}
コード例 #9
0
ファイル: sysfs.c プロジェクト: ECRS/Asus-RT-N16
static ssize_t
show_speed(struct device *dev, struct device_attribute *attr, char *buf)
{
    struct usb_device *udev;
    char *speed;

    udev = to_usb_device(dev);

    switch (udev->speed) {
    case USB_SPEED_LOW:
        speed = "1.5";
        break;
    case USB_SPEED_UNKNOWN:
    case USB_SPEED_FULL:
        speed = "12";
        break;
    case USB_SPEED_HIGH:
        speed = "480";
        break;
    default:
        speed = "unknown";
    }
    return sprintf(buf, "%s\n", speed);
}
コード例 #10
0
ファイル: usb-acpi.c プロジェクト: AdrianHuang/linux-3.8.13
static int usb_acpi_find_device(struct device *dev, acpi_handle *handle)
{
	struct usb_device *udev;
	acpi_handle *parent_handle;
	int port_num;

	/*
	 * In the ACPI DSDT table, only usb root hub and usb ports are
	 * acpi device nodes. The hierarchy like following.
	 * Device (EHC1)
	 *	Device (HUBN)
	 *		Device (PR01)
	 *			Device (PR11)
	 *			Device (PR12)
	 *			Device (PR13)
	 *			...
	 * So all binding process is divided into two parts. binding
	 * root hub and usb ports.
	 */
	if (is_usb_device(dev)) {
		udev = to_usb_device(dev);
		if (udev->parent) {
			enum usb_port_connect_type type;

			/*
			 * According usb port's connect type to set usb device's
			 * removability.
			 */
			type = usb_get_hub_port_connect_type(udev->parent,
				udev->portnum);
			switch (type) {
			case USB_PORT_CONNECT_TYPE_HOT_PLUG:
				udev->removable = USB_DEVICE_REMOVABLE;
				break;
			case USB_PORT_CONNECT_TYPE_HARD_WIRED:
				udev->removable = USB_DEVICE_FIXED;
				break;
			default:
				udev->removable = USB_DEVICE_REMOVABLE_UNKNOWN;
				break;
			}

			return -ENODEV;
		}

		/* root hub's parent is the usb hcd. */
		parent_handle = DEVICE_ACPI_HANDLE(dev->parent);
		*handle = acpi_get_child(parent_handle, udev->portnum);
		if (!*handle)
			return -ENODEV;
		return 0;
	} else if (is_usb_port(dev)) {
		sscanf(dev_name(dev), "port%d", &port_num);
		/* Get the struct usb_device point of port's hub */
		udev = to_usb_device(dev->parent->parent);

		/*
		 * The root hub ports' parent is the root hub. The non-root-hub
		 * ports' parent is the parent hub port which the hub is
		 * connected to.
		 */
		if (!udev->parent) {
			*handle = acpi_get_child(DEVICE_ACPI_HANDLE(&udev->dev),
				port_num);
			if (!*handle)
				return -ENODEV;
		} else {
			parent_handle =
				usb_get_hub_port_acpi_handle(udev->parent,
				udev->portnum);
			if (!parent_handle)
				return -ENODEV;

			*handle = acpi_get_child(parent_handle,	port_num);
			if (!*handle)
				return -ENODEV;
		}
		usb_acpi_check_port_connect_type(udev, *handle, port_num);
	} else
		return -ENODEV;

	return 0;
}
コード例 #11
0
ファイル: irq.c プロジェクト: OpenHMR/Open-HMR600
asmlinkage void do_IRQ(int irq, struct pt_regs * regs)
{
	struct irqaction *action;
	int do_random, cpu;
        int ret, retval = 0;

        cpu = smp_processor_id();
        irq_enter();
	kstat_cpu(cpu).irqs[irq - FIRST_IRQ]++;
	action = irq_action[irq - FIRST_IRQ];

        if (action) {
                if (!(action->flags & SA_INTERRUPT))
                        local_irq_enable();
                do_random = 0;
                do {
			ret = action->handler(irq, action->dev_id, regs);
			if (ret == IRQ_HANDLED)
				do_random |= action->flags;
                        retval |= ret;
                        action = action->next;
                } while (action);

                if (retval != 1) {
			if (retval) {
				printk("irq event %d: bogus retval mask %x\n",
					irq, retval);
			} else {
				printk("irq %d: nobody cared\n", irq);
				// add by cfyeh : debug for irq 2: nobody cared +++
				if(irq == 2) {
					u32 regs;
					int i;
					int regs_num;

					#define HCS_N_PORTS(p)          (((p)>>0)&0xf)  /* bits 3:0, ports on HC */
					regs_num= 21 + HCS_N_PORTS(inl(VENUS_USB_EHCI_HCSPARAMS)); 

					udev = to_usb_device (dev);
					actconfig = udev->actconfig;

					printk("\n EHCI regs\n");
					regs=VENUS_USB_EHCI_USBBASE;
					for(i=0;i<regs_num;i++)
					{
						if((i%4)==0)
							printk("0x%.8x : ", regs);
						printk("%.8x ", inl(regs));
						regs+=4;
						if((i%4)==3)
							printk("\n");		
					}
					printk("\n");		
				}
				// add by cfyeh : debug for irq 2: nobody cared ---
			}
		}

                if (do_random & SA_SAMPLE_RANDOM)
                        add_interrupt_randomness(irq);
		local_irq_disable();
        }
        irq_exit();
}
コード例 #12
0
static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
{
	struct device *dev = rtlpriv->io.dev;

	_usb_write_async(to_usb_device(dev), addr, val, 4);
}
コード例 #13
0
ファイル: config.c プロジェクト: loginab/esxdrivers
static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
    int asnum, struct usb_host_interface *ifp, int num_ep,
    unsigned char *buffer, int size)
{
	unsigned char *buffer0 = buffer;
	struct usb_endpoint_descriptor *d;
	struct usb_host_endpoint *endpoint;
	int n, i, j;

	d = (struct usb_endpoint_descriptor *) buffer;
	buffer += d->bLength;
	size -= d->bLength;

	if (d->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE)
		n = USB_DT_ENDPOINT_AUDIO_SIZE;
	else if (d->bLength >= USB_DT_ENDPOINT_SIZE)
		n = USB_DT_ENDPOINT_SIZE;
	else {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint descriptor of length %d, skipping\n",
		    cfgno, inum, asnum, d->bLength);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	i = d->bEndpointAddress & ~USB_ENDPOINT_DIR_MASK;
	if (i >= 16 || i == 0) {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint with address 0x%X, skipping\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	/* Only store as many endpoints as we have room for */
	if (ifp->desc.bNumEndpoints >= num_ep)
		goto skip_to_next_endpoint_or_interface_descriptor;

	endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints];
	++ifp->desc.bNumEndpoints;

	memcpy(&endpoint->desc, d, n);
	INIT_LIST_HEAD(&endpoint->urb_list);

	/* Fix up bInterval values outside the legal range. Use 32 ms if no
	 * proper value can be guessed. */
	i = 0;		/* i = min, j = max, n = default */
	j = 255;
	if (usb_endpoint_xfer_int(d)) {
		i = 1;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_HIGH:
			/* Many device manufacturers are using full-speed
			 * bInterval values in high-speed interrupt endpoint
			 * descriptors. Try to fix those and fall back to a
			 * 32 ms default value otherwise. */
			n = fls(d->bInterval*8);
			if (n == 0)
				n = 9;	/* 32 ms = 2^(9-1) uframes */
			j = 16;
			break;
		default:		/* USB_SPEED_FULL or _LOW */
			/* For low-speed, 10 ms is the official minimum.
			 * But some "overclocked" devices might want faster
			 * polling so we'll allow it. */
			n = 32;
			break;
		}
	} else if (usb_endpoint_xfer_isoc(d)) {
		i = 1;
		j = 16;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_HIGH:
			n = 9;		/* 32 ms = 2^(9-1) uframes */
			break;
		default:		/* USB_SPEED_FULL */
			n = 6;		/* 32 ms = 2^(6-1) frames */
			break;
		}
	}
	if (d->bInterval < i || d->bInterval > j) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X has an invalid bInterval %d, "
		    "changing to %d\n",
		    cfgno, inum, asnum,
		    d->bEndpointAddress, d->bInterval, n);
		endpoint->desc.bInterval = n;
	}

	/* Some buggy low-speed devices have Bulk endpoints, which is
	 * explicitly forbidden by the USB spec.  In an attempt to make
	 * them usable, we will try treating them as Interrupt endpoints.
	 */
	if (to_usb_device(ddev)->speed == USB_SPEED_LOW &&
			usb_endpoint_xfer_bulk(d)) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X is Bulk; changing to Interrupt\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		endpoint->desc.bmAttributes = USB_ENDPOINT_XFER_INT;
		endpoint->desc.bInterval = 1;
		if (le16_to_cpu(endpoint->desc.wMaxPacketSize) > 8)
			endpoint->desc.wMaxPacketSize = cpu_to_le16(8);
	}

	/* Skip over any Class Specific or Vendor Specific descriptors;
	 * find the next endpoint or interface descriptor */
	endpoint->extra = buffer;
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
	    USB_DT_INTERFACE, &n);
	endpoint->extralen = i;
	if (n > 0)
		dev_dbg(ddev, "skipped %d descriptor%s after %s\n",
		    n, plural(n), "endpoint");
	return buffer - buffer0 + i;

skip_to_next_endpoint_or_interface_descriptor:
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
	    USB_DT_INTERFACE, NULL);
	return buffer - buffer0 + i;
}
コード例 #14
0
ファイル: config.c プロジェクト: mjduddin/B14CKB1RD_kernel_m8
static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
    int asnum, struct usb_host_interface *ifp, int num_ep,
    unsigned char *buffer, int size)
{
	unsigned char *buffer0 = buffer;
	struct usb_endpoint_descriptor *d;
	struct usb_host_endpoint *endpoint;
	int n, i, j, retval;

	d = (struct usb_endpoint_descriptor *) buffer;
	buffer += d->bLength;
	size -= d->bLength;

	if (d->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE)
		n = USB_DT_ENDPOINT_AUDIO_SIZE;
	else if (d->bLength >= USB_DT_ENDPOINT_SIZE)
		n = USB_DT_ENDPOINT_SIZE;
	else {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint descriptor of length %d, skipping\n",
		    cfgno, inum, asnum, d->bLength);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	i = d->bEndpointAddress & ~USB_ENDPOINT_DIR_MASK;
	if (i >= 16 || i == 0) {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint with address 0x%X, skipping\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	
	if (ifp->desc.bNumEndpoints >= num_ep)
		goto skip_to_next_endpoint_or_interface_descriptor;

	endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints];
	++ifp->desc.bNumEndpoints;

	memcpy(&endpoint->desc, d, n);
	INIT_LIST_HEAD(&endpoint->urb_list);

	i = 0;		
	j = 255;
	if (usb_endpoint_xfer_int(d)) {
		i = 1;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_SUPER:
		case USB_SPEED_HIGH:
			n = fls(d->bInterval*8);
			if (n == 0)
				n = 9;	
			j = 16;
			break;
		default:		
			n = 32;
			break;
		}
	} else if (usb_endpoint_xfer_isoc(d)) {
		i = 1;
		j = 16;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_HIGH:
			n = 9;		
			break;
		default:		
			n = 6;		
			break;
		}
	}
	if (d->bInterval < i || d->bInterval > j) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X has an invalid bInterval %d, "
		    "changing to %d\n",
		    cfgno, inum, asnum,
		    d->bEndpointAddress, d->bInterval, n);
		endpoint->desc.bInterval = n;
	}

	if (to_usb_device(ddev)->speed == USB_SPEED_LOW &&
			usb_endpoint_xfer_bulk(d)) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X is Bulk; changing to Interrupt\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		endpoint->desc.bmAttributes = USB_ENDPOINT_XFER_INT;
		endpoint->desc.bInterval = 1;
		if (usb_endpoint_maxp(&endpoint->desc) > 8)
			endpoint->desc.wMaxPacketSize = cpu_to_le16(8);
	}

	if (to_usb_device(ddev)->speed == USB_SPEED_HIGH
			&& usb_endpoint_xfer_bulk(d)) {
		unsigned maxp;

		maxp = usb_endpoint_maxp(&endpoint->desc) & 0x07ff;
		if (maxp != 512)
			dev_warn(ddev, "config %d interface %d altsetting %d "
				"bulk endpoint 0x%X has invalid maxpacket %d\n",
				cfgno, inum, asnum, d->bEndpointAddress,
				maxp);
	}

	
	if (to_usb_device(ddev)->speed == USB_SPEED_SUPER)
		usb_parse_ss_endpoint_companion(ddev, cfgno,
				inum, asnum, endpoint, buffer, size);

	endpoint->extra = buffer;
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
			USB_DT_INTERFACE, &n);
	endpoint->extralen = i;
	retval = buffer - buffer0 + i;
	if (n > 0)
		dev_dbg(ddev, "skipped %d descriptor%s after %s\n",
		    n, plural(n), "endpoint");
	return retval;

skip_to_next_endpoint_or_interface_descriptor:
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
	    USB_DT_INTERFACE, NULL);
	return buffer - buffer0 + i;
}
コード例 #15
0
ファイル: sysfs.c プロジェクト: Anjali05/linux
/* show if the device is authorized (1) or not (0) */
static ssize_t authorized_show(struct device *dev,
			       struct device_attribute *attr, char *buf)
{
	struct usb_device *usb_dev = to_usb_device(dev);
	return snprintf(buf, PAGE_SIZE, "%u\n", usb_dev->authorized);
}
コード例 #16
0
ファイル: sysfs.c プロジェクト: Anjali05/linux
static ssize_t usb2_lpm_besl_show(struct device *dev,
				  struct device_attribute *attr, char *buf)
{
	struct usb_device *udev = to_usb_device(dev);
	return sprintf(buf, "%d\n", udev->l1_params.besl);
}
コード例 #17
0
ファイル: config.c プロジェクト: acton393/linux
static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
    int asnum, struct usb_host_interface *ifp, int num_ep,
    unsigned char *buffer, int size)
{
	unsigned char *buffer0 = buffer;
	struct usb_endpoint_descriptor *d;
	struct usb_host_endpoint *endpoint;
	int n, i, j, retval;
	unsigned int maxp;
	const unsigned short *maxpacket_maxes;

	d = (struct usb_endpoint_descriptor *) buffer;
	buffer += d->bLength;
	size -= d->bLength;

	if (d->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE)
		n = USB_DT_ENDPOINT_AUDIO_SIZE;
	else if (d->bLength >= USB_DT_ENDPOINT_SIZE)
		n = USB_DT_ENDPOINT_SIZE;
	else {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint descriptor of length %d, skipping\n",
		    cfgno, inum, asnum, d->bLength);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	i = d->bEndpointAddress & ~USB_ENDPOINT_DIR_MASK;
	if (i >= 16 || i == 0) {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint with address 0x%X, skipping\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	/* Only store as many endpoints as we have room for */
	if (ifp->desc.bNumEndpoints >= num_ep)
		goto skip_to_next_endpoint_or_interface_descriptor;

	endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints];
	++ifp->desc.bNumEndpoints;

	memcpy(&endpoint->desc, d, n);
	INIT_LIST_HEAD(&endpoint->urb_list);

	/*
	 * Fix up bInterval values outside the legal range.
	 * Use 10 or 8 ms if no proper value can be guessed.
	 */
	i = 0;		/* i = min, j = max, n = default */
	j = 255;
	if (usb_endpoint_xfer_int(d)) {
		i = 1;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_SUPER_PLUS:
		case USB_SPEED_SUPER:
		case USB_SPEED_HIGH:
			/*
			 * Many device manufacturers are using full-speed
			 * bInterval values in high-speed interrupt endpoint
			 * descriptors. Try to fix those and fall back to an
			 * 8-ms default value otherwise.
			 */
			n = fls(d->bInterval*8);
			if (n == 0)
				n = 7;	/* 8 ms = 2^(7-1) uframes */
			j = 16;

			/*
			 * Adjust bInterval for quirked devices.
			 * This quirk fixes bIntervals reported in
			 * linear microframes.
			 */
			if (to_usb_device(ddev)->quirks &
				USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL) {
				n = clamp(fls(d->bInterval), i, j);
				i = j = n;
			}
			break;
		default:		/* USB_SPEED_FULL or _LOW */
			/*
			 * For low-speed, 10 ms is the official minimum.
			 * But some "overclocked" devices might want faster
			 * polling so we'll allow it.
			 */
			n = 10;
			break;
		}
	} else if (usb_endpoint_xfer_isoc(d)) {
		i = 1;
		j = 16;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_HIGH:
			n = 7;		/* 8 ms = 2^(7-1) uframes */
			break;
		default:		/* USB_SPEED_FULL */
			n = 4;		/* 8 ms = 2^(4-1) frames */
			break;
		}
	}
	if (d->bInterval < i || d->bInterval > j) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X has an invalid bInterval %d, "
		    "changing to %d\n",
		    cfgno, inum, asnum,
		    d->bEndpointAddress, d->bInterval, n);
		endpoint->desc.bInterval = n;
	}

	/* Some buggy low-speed devices have Bulk endpoints, which is
	 * explicitly forbidden by the USB spec.  In an attempt to make
	 * them usable, we will try treating them as Interrupt endpoints.
	 */
	if (to_usb_device(ddev)->speed == USB_SPEED_LOW &&
			usb_endpoint_xfer_bulk(d)) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X is Bulk; changing to Interrupt\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		endpoint->desc.bmAttributes = USB_ENDPOINT_XFER_INT;
		endpoint->desc.bInterval = 1;
		if (usb_endpoint_maxp(&endpoint->desc) > 8)
			endpoint->desc.wMaxPacketSize = cpu_to_le16(8);
	}

	/* Validate the wMaxPacketSize field */
	maxp = usb_endpoint_maxp(&endpoint->desc);

	/* Find the highest legal maxpacket size for this endpoint */
	i = 0;		/* additional transactions per microframe */
	switch (to_usb_device(ddev)->speed) {
	case USB_SPEED_LOW:
		maxpacket_maxes = low_speed_maxpacket_maxes;
		break;
	case USB_SPEED_FULL:
		maxpacket_maxes = full_speed_maxpacket_maxes;
		break;
	case USB_SPEED_HIGH:
		/* Bits 12..11 are allowed only for HS periodic endpoints */
		if (usb_endpoint_xfer_int(d) || usb_endpoint_xfer_isoc(d)) {
			i = maxp & (BIT(12) | BIT(11));
			maxp &= ~i;
		}
		/* fallthrough */
	default:
		maxpacket_maxes = high_speed_maxpacket_maxes;
		break;
	case USB_SPEED_SUPER:
	case USB_SPEED_SUPER_PLUS:
		maxpacket_maxes = super_speed_maxpacket_maxes;
		break;
	}
	j = maxpacket_maxes[usb_endpoint_type(&endpoint->desc)];

	if (maxp > j) {
		dev_warn(ddev, "config %d interface %d altsetting %d endpoint 0x%X has invalid maxpacket %d, setting to %d\n",
		    cfgno, inum, asnum, d->bEndpointAddress, maxp, j);
		maxp = j;
		endpoint->desc.wMaxPacketSize = cpu_to_le16(i | maxp);
	}

	/*
	 * Some buggy high speed devices have bulk endpoints using
	 * maxpacket sizes other than 512.  High speed HCDs may not
	 * be able to handle that particular bug, so let's warn...
	 */
	if (to_usb_device(ddev)->speed == USB_SPEED_HIGH
			&& usb_endpoint_xfer_bulk(d)) {
		if (maxp != 512)
			dev_warn(ddev, "config %d interface %d altsetting %d "
				"bulk endpoint 0x%X has invalid maxpacket %d\n",
				cfgno, inum, asnum, d->bEndpointAddress,
				maxp);
	}

	/* Parse a possible SuperSpeed endpoint companion descriptor */
	if (to_usb_device(ddev)->speed >= USB_SPEED_SUPER)
		usb_parse_ss_endpoint_companion(ddev, cfgno,
				inum, asnum, endpoint, buffer, size);

	/* Skip over any Class Specific or Vendor Specific descriptors;
	 * find the next endpoint or interface descriptor */
	endpoint->extra = buffer;
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
			USB_DT_INTERFACE, &n);
	endpoint->extralen = i;
	retval = buffer - buffer0 + i;
	if (n > 0)
		dev_dbg(ddev, "skipped %d descriptor%s after %s\n",
		    n, plural(n), "endpoint");
	return retval;

skip_to_next_endpoint_or_interface_descriptor:
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
	    USB_DT_INTERFACE, NULL);
	return buffer - buffer0 + i;
}
コード例 #18
0
static struct acpi_device *usb_acpi_find_companion(struct device *dev)
{
	int port1;
	struct usb_device *udev;
	acpi_handle *parent_handle;

	/*
	 * In the ACPI DSDT table, only usb root hub and usb ports are
	 * acpi device nodes. The hierarchy like following.
	 * Device (EHC1)
	 *	Device (HUBN)
	 *		Device (PR01)
	 *			Device (PR11)
	 *			Device (PR12)
	 *			Device (PR13)
	 *			...
	 * So all binding process is divided into two parts. binding
	 * root hub and usb ports.
	 */
	if (is_usb_device(dev)) {
		udev = to_usb_device(dev);
		port1 = udev->portnum;
		if (udev->parent) {
			struct usb_hub *hub;

			hub = usb_hub_to_struct_hub(udev->parent);
			/*
			 * According usb port's connect type to set usb device's
			 * removability.
			 */
			switch (hub->ports[port1 - 1]->connect_type) {
			case USB_PORT_CONNECT_TYPE_HOT_PLUG:
				udev->removable = USB_DEVICE_REMOVABLE;
				break;
			case USB_PORT_CONNECT_TYPE_HARD_WIRED:
				udev->removable = USB_DEVICE_FIXED;
				break;
			default:
				udev->removable = USB_DEVICE_REMOVABLE_UNKNOWN;
				break;
			}

			return NULL;
		}

		/* root hub's parent is the usb hcd. */
		return acpi_find_child_device(ACPI_COMPANION(dev->parent),
				port1, false);
	} else if (is_usb_port(dev)) {
		struct usb_port *port_dev = to_usb_port(dev);
		struct acpi_device *adev = NULL;

		/* Get the struct usb_device point of port's hub */
		udev = to_usb_device(dev->parent->parent);
		port1 = port_dev->portnum;

		/*
		 * The root hub ports' parent is the root hub. The non-root-hub
		 * ports' parent is the parent hub port which the hub is
		 * connected to.
		 */
		if (!udev->parent) {
			struct usb_hcd *hcd = bus_to_hcd(udev->bus);
			int raw;

			raw = usb_hcd_find_raw_port_number(hcd, port1);
			adev = acpi_find_child_device(ACPI_COMPANION(&udev->dev),
					raw, false);
			if (!adev)
				return NULL;
		} else {
			parent_handle =
				usb_get_hub_port_acpi_handle(udev->parent,
				udev->portnum);
			if (!parent_handle)
				return NULL;

			acpi_bus_get_device(parent_handle, &adev);
			adev = acpi_find_child_device(adev, port1, false);
			if (!adev)
				return NULL;
		}
		usb_acpi_check_port_connect_type(udev, adev->handle, port1);
		return adev;
	}

	return NULL;
}
コード例 #19
0
ファイル: config.c プロジェクト: vps2fast/openvz-kernel
static int usb_parse_endpoint(struct device *ddev, int cfgno, int inum,
    int asnum, struct usb_host_interface *ifp, int num_ep,
    unsigned char *buffer, int size)
{
	unsigned char *buffer0 = buffer;
	struct usb_endpoint_descriptor *d;
	struct usb_host_endpoint *endpoint;
	int n, i, j, retval;

	d = (struct usb_endpoint_descriptor *) buffer;
	buffer += d->bLength;
	size -= d->bLength;

	if (d->bLength >= USB_DT_ENDPOINT_AUDIO_SIZE)
		n = USB_DT_ENDPOINT_AUDIO_SIZE;
	else if (d->bLength >= USB_DT_ENDPOINT_SIZE)
		n = USB_DT_ENDPOINT_SIZE;
	else {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint descriptor of length %d, skipping\n",
		    cfgno, inum, asnum, d->bLength);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	i = d->bEndpointAddress & ~USB_ENDPOINT_DIR_MASK;
	if (i >= 16 || i == 0) {
		dev_warn(ddev, "config %d interface %d altsetting %d has an "
		    "invalid endpoint with address 0x%X, skipping\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		goto skip_to_next_endpoint_or_interface_descriptor;
	}

	/* Only store as many endpoints as we have room for */
	if (ifp->desc.bNumEndpoints >= num_ep)
		goto skip_to_next_endpoint_or_interface_descriptor;

	endpoint = &ifp->endpoint[ifp->desc.bNumEndpoints];
	++ifp->desc.bNumEndpoints;

	memcpy(&endpoint->desc, d, n);
	INIT_LIST_HEAD(&endpoint->urb_list);

	/* Fix up bInterval values outside the legal range. Use 32 ms if no
	 * proper value can be guessed. */
	i = 0;		/* i = min, j = max, n = default */
	j = 255;
	if (usb_endpoint_xfer_int(d)) {
		i = 1;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_SUPER:
		case USB_SPEED_HIGH:
			/* Many device manufacturers are using full-speed
			 * bInterval values in high-speed interrupt endpoint
			 * descriptors. Try to fix those and fall back to a
			 * 32 ms default value otherwise. */
			n = fls(d->bInterval*8);
			if (n == 0)
				n = 9;	/* 32 ms = 2^(9-1) uframes */
			j = 16;
			break;
		default:		/* USB_SPEED_FULL or _LOW */
			/* For low-speed, 10 ms is the official minimum.
			 * But some "overclocked" devices might want faster
			 * polling so we'll allow it. */
			n = 32;
			break;
		}
	} else if (usb_endpoint_xfer_isoc(d)) {
		i = 1;
		j = 16;
		switch (to_usb_device(ddev)->speed) {
		case USB_SPEED_HIGH:
			n = 9;		/* 32 ms = 2^(9-1) uframes */
			break;
		default:		/* USB_SPEED_FULL */
			n = 6;		/* 32 ms = 2^(6-1) frames */
			break;
		}
	}
	if (d->bInterval < i || d->bInterval > j) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X has an invalid bInterval %d, "
		    "changing to %d\n",
		    cfgno, inum, asnum,
		    d->bEndpointAddress, d->bInterval, n);
		endpoint->desc.bInterval = n;
	}

	/* Some buggy low-speed devices have Bulk endpoints, which is
	 * explicitly forbidden by the USB spec.  In an attempt to make
	 * them usable, we will try treating them as Interrupt endpoints.
	 */
	if (to_usb_device(ddev)->speed == USB_SPEED_LOW &&
			usb_endpoint_xfer_bulk(d)) {
		dev_warn(ddev, "config %d interface %d altsetting %d "
		    "endpoint 0x%X is Bulk; changing to Interrupt\n",
		    cfgno, inum, asnum, d->bEndpointAddress);
		endpoint->desc.bmAttributes = USB_ENDPOINT_XFER_INT;
		endpoint->desc.bInterval = 1;
		if (le16_to_cpu(endpoint->desc.wMaxPacketSize) > 8)
			endpoint->desc.wMaxPacketSize = cpu_to_le16(8);
	}

	/*
	 * Some buggy high speed devices have bulk endpoints using
	 * maxpacket sizes other than 512.  High speed HCDs may not
	 * be able to handle that particular bug, so let's warn...
	 */
	if (to_usb_device(ddev)->speed == USB_SPEED_HIGH
			&& usb_endpoint_xfer_bulk(d)) {
		unsigned maxp;

		maxp = le16_to_cpu(endpoint->desc.wMaxPacketSize) & 0x07ff;
		if (maxp != 512)
			dev_warn(ddev, "config %d interface %d altsetting %d "
				"bulk endpoint 0x%X has invalid maxpacket %d\n",
				cfgno, inum, asnum, d->bEndpointAddress,
				maxp);
	}
	/* Allocate room for and parse any SS endpoint companion descriptors */
	if (to_usb_device(ddev)->speed == USB_SPEED_SUPER) {
		endpoint->extra = buffer;
		i = find_next_descriptor_more(buffer, size, USB_DT_SS_ENDPOINT_COMP,
				USB_DT_ENDPOINT, USB_DT_INTERFACE, &n);
		endpoint->extralen = i;
		buffer += i;
		size -= i;

		/* Allocate space for the SS endpoint companion descriptor */
		endpoint->ss_ep_comp = kzalloc(sizeof(struct usb_host_ss_ep_comp),
				GFP_KERNEL);
		if (!endpoint->ss_ep_comp)
			return -ENOMEM;

		/* Fill in some default values (may be overwritten later) */
		endpoint->ss_ep_comp->desc.bLength = USB_DT_SS_EP_COMP_SIZE;
		endpoint->ss_ep_comp->desc.bDescriptorType = USB_DT_SS_ENDPOINT_COMP;
		endpoint->ss_ep_comp->desc.bMaxBurst = 0;
		/*
		 * Leave bmAttributes as zero, which will mean no streams for
		 * bulk, and isoc won't support multiple bursts of packets.
		 * With bursts of only one packet, and a Mult of 1, the max
		 * amount of data moved per endpoint service interval is one
		 * packet.
		 */
		if (usb_endpoint_xfer_isoc(&endpoint->desc) ||
				usb_endpoint_xfer_int(&endpoint->desc))
			endpoint->ss_ep_comp->desc.wBytesPerInterval =
				endpoint->desc.wMaxPacketSize;

		if (size > 0) {
			retval = usb_parse_ss_endpoint_companion(ddev, cfgno,
					inum, asnum, endpoint, num_ep, buffer,
					size);
			if (retval >= 0) {
				buffer += retval;
				retval = buffer - buffer0;
			}
		} else {
			dev_warn(ddev, "config %d interface %d altsetting %d "
				"endpoint 0x%X has no "
				"SuperSpeed companion descriptor\n",
				cfgno, inum, asnum, d->bEndpointAddress);
			retval = buffer - buffer0;
		}
	} else {
		/* Skip over any Class Specific or Vendor Specific descriptors;
		 * find the next endpoint or interface descriptor */
		endpoint->extra = buffer;
		i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
				USB_DT_INTERFACE, &n);
		endpoint->extralen = i;
		retval = buffer - buffer0 + i;
	}
	if (n > 0)
		dev_dbg(ddev, "skipped %d descriptor%s after %s\n",
		    n, plural(n), "endpoint");
	return retval;

skip_to_next_endpoint_or_interface_descriptor:
	i = find_next_descriptor(buffer, size, USB_DT_ENDPOINT,
	    USB_DT_INTERFACE, NULL);
	return buffer - buffer0 + i;
}