--- /dev/null
+/*
+ USB Driver for Sierra Wireless
+
+ Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>,
+
+ Copyright (C) 2008 - 2011 Elina Pasheva, Matthew Safar, Rory Filer
+ <linux@sierrawireless.com>
+
+ IMPORTANT DISCLAIMER: This driver is not commercially supported by
+ Sierra Wireless. Use at your own risk.
+
+ This driver is free software; you can redistribute it and/or modify
+ it under the terms of Version 2 of the GNU General Public License as
+ published by the Free Software Foundation.
+
+ Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de>
+ Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
+*/
+/* Uncomment to log function calls */
+/*#define DEBUG*/
+/* Uncomment to force power level set to auto when attaching a device */
+/*#define POWER_LEVEL_AUTO*/
+
+/* Sierra driver - kernel 3.0 */
+#define DRIVER_VERSION "v.1.7.40"
+#define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer"
+#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
+
+#include <linux/kernel.h>
+#include <linux/jiffies.h>
+#include <linux/errno.h>
+#include <linux/tty.h>
+#include <linux/slab.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+#include <asm/unaligned.h>
+
+#define SWIMS_USB_REQUEST_SetPower 0x00
+#define SWIMS_USB_REQUEST_GetFwAttr 0x06
+#define SWIMS_USB_REQUEST_SetNmea 0x07
+#define USB_REQUEST_TYPE_CLASS 0xA1
+#define USB_REQUEST_IFACE 0x20
+
+#define N_IN_URB_HM 8
+#define N_OUT_URB_HM 64
+#define N_IN_URB 4
+#define N_OUT_URB 4
+#define IN_BUFLEN 4096
+
+#define MAX_TRANSFER (PAGE_SIZE - 512)
+/* MAX_TRANSFER is chosen so that the VM is not stressed by
+ allocations > PAGE_SIZE and the number of packets in a page
+ is an integer 512 is the largest possible packet on EHCI */
+
+#define SWI_FW_ATTR_PM_MASK 0x02
+/* PORTION_LEN defines the length of device attribute buffer */
+#define PORTION_LEN 4096
+
+static int debug;
+static int nmea;
+
+/* sysfs attributes */
+static int sierra_create_sysfs_attrs(struct usb_serial_port *port);
+static int sierra_remove_sysfs_attrs(struct usb_serial_port *port);
+
+/* Used in interface blacklisting */
+struct sierra_iface_info {
+ const u32 infolen; /* number of interface numbers on blacklist */
+ const u8 *ifaceinfo; /* pointer to the array holding the numbers */
+};
+
+/* per interface statistics */
+struct sierra_intf_stats {
+ atomic_t rx_bytes; /* received bytes */
+ atomic_t indat_cb_cnt; /* indat callback count */
+ atomic_t indat_cb_fail; /* indat cb with error */
+
+ atomic_t tx_bytes; /* transmitted bytes */
+ atomic_t write_cnt; /* no. of writes */
+ atomic_t write_err; /* no. of failed writes */
+
+ atomic_t delayed_writes; /* no. of delayed writes */
+ atomic_t delayed_write_err; /* no. of delayed write errs */
+
+ atomic_t outdat_cb_cnt; /* outdat callback count */
+ atomic_t outdat_cb_fail; /* outdat cb with error */
+
+};
+
+struct sierra_intf_private {
+ spinlock_t susp_lock;
+ unsigned int suspended:1;
+ int in_flight;
+
+ struct sierra_intf_stats stats;
+};
+
+static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
+{
+ int result;
+ dev_dbg(&udev->dev, "%s\n", __func__);
+ result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ SWIMS_USB_REQUEST_SetPower, /* __u8 request */
+ USB_TYPE_VENDOR, /* __u8 request type */
+ swiState, /* __u16 value */
+ 0, /* __u16 index */
+ NULL, /* void *data */
+ 0, /* __u16 size */
+ USB_CTRL_SET_TIMEOUT); /* int timeout */
+ return result;
+}
+
+static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable)
+{
+ int result;
+ dev_dbg(&udev->dev, "%s\n", __func__);
+ result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0),
+ SWIMS_USB_REQUEST_SetNmea, /* __u8 request */
+ USB_TYPE_VENDOR, /* __u8 request type */
+ enable, /* __u16 value */
+ 0x0000, /* __u16 index */
+ NULL, /* void *data */
+ 0, /* __u16 size */
+ USB_CTRL_SET_TIMEOUT); /* int timeout */
+ return result;
+}
+
+static int sierra_get_fw_attr(struct usb_device *udev, u16 *data)
+{
+ int result;
+ u16 *attrdata;
+
+ dev_dbg(&udev->dev, "%s\n", __func__);
+
+ attrdata = kmalloc(sizeof(*attrdata), GFP_KERNEL);
+ if (!attrdata)
+ return -ENOMEM;
+
+ result = usb_control_msg(udev,
+ usb_rcvctrlpipe(udev, 0),
+ SWIMS_USB_REQUEST_GetFwAttr, /* __u8 request*/
+ USB_TYPE_VENDOR | USB_DIR_IN, /* request type*/
+ 0x0000, /* __u16 value */
+ 0x0000, /* __u16 index */
+ attrdata, /* void *data */
+ sizeof(*attrdata), /* _u16 size */
+ USB_CTRL_SET_TIMEOUT); /* in timeout */
+
+ if (result < 0) {
+ kfree(attrdata);
+ return -EIO;
+ }
+
+ *data = *attrdata;
+
+ kfree(attrdata);
+ return result;
+}
+
+static int sierra_calc_num_ports(struct usb_serial *serial)
+{
+ int num_ports = 0;
+ u8 ifnum, numendpoints;
+
+ dev_dbg(&serial->dev->dev, "%s\n", __func__);
+
+ ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
+ numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
+
+ /* Dummy interface present on some SKUs should be ignored */
+ if (ifnum == 0x99)
+ num_ports = 0;
+ else if (numendpoints <= 3)
+ num_ports = 1;
+ else
+ num_ports = (numendpoints-1)/2;
+ return num_ports;
+}
+
+static int is_blacklisted(const u8 ifnum,
+ const struct sierra_iface_info *blacklist)
+{
+ const u8 *info;
+ int i;
+
+ if (blacklist) {
+ info = blacklist->ifaceinfo;
+
+ for (i = 0; i < blacklist->infolen; i++) {
+ if (info[i] == ifnum)
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int is_himemory(const u8 ifnum,
+ const struct sierra_iface_info *himemorylist)
+{
+ const u8 *info;
+ int i;
+
+ if (himemorylist) {
+ info = himemorylist->ifaceinfo;
+
+ for (i=0; i < himemorylist->infolen; i++) {
+ if (info[i] == ifnum)
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int sierra_calc_interface(struct usb_serial *serial)
+{
+ int interface;
+ struct usb_interface *p_interface;
+ struct usb_host_interface *p_host_interface;
+
+ /* Get the interface structure pointer from the serial struct */
+ p_interface = serial->interface;
+
+ /* Get a pointer to the host interface structure */
+ p_host_interface = p_interface->cur_altsetting;
+
+ /* read the interface descriptor for this active altsetting
+ * to find out the interface number we are on */
+ interface = p_host_interface->desc.bInterfaceNumber;
+
+ return interface;
+}
+
+static int sierra_probe(struct usb_serial *serial,
+ const struct usb_device_id *id)
+{
+ int result = 0;
+ struct usb_device *udev;
+ struct sierra_intf_private *intfdata;
+ u8 ifnum;
+
+ udev = serial->dev;
+ dev_dbg(&udev->dev, "%s\n", __func__);
+
+ ifnum = sierra_calc_interface(serial);
+ /*
+ * If this interface supports more than 1 alternate
+ * select the 2nd one
+ */
+ if (serial->interface->num_altsetting == 2) {
+ dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n",
+ ifnum);
+ /* We know the alternate setting is for composite USB interface
+ * modems
+ */
+ usb_set_interface(udev, ifnum, 1);
+ }
+
+ /* ifnum could have changed - by calling usb_set_interface */
+ ifnum = sierra_calc_interface(serial);
+
+ if (is_blacklisted(ifnum,
+ (struct sierra_iface_info *)id->driver_info)) {
+ dev_dbg(&serial->dev->dev,
+ "Ignoring blacklisted interface #%d\n", ifnum);
+ return -ENODEV;
+ }
+
+ intfdata = serial->private = kzalloc(sizeof(struct sierra_intf_private),
+ GFP_KERNEL);
+ if (!intfdata)
+ return -ENOMEM;
+ spin_lock_init(&intfdata->susp_lock);
+
+ return result;
+}
+
+/* interfaces with higher memory requirements */
+static const u8 hi_memory_typeA_ifaces[] = { 0, 2 };
+static const struct sierra_iface_info typeA_interface_list = {
+ .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces),
+ .ifaceinfo = hi_memory_typeA_ifaces,
+};
+
+static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 };
+static const struct sierra_iface_info typeB_interface_list = {
+ .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces),
+ .ifaceinfo = hi_memory_typeB_ifaces,
+};
+
+/* 'blacklist' of interfaces not served by this driver */
+static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11 };
+static const struct sierra_iface_info direct_ip_interface_blacklist = {
+ .infolen = ARRAY_SIZE( direct_ip_non_serial_ifaces ),
+ .ifaceinfo = direct_ip_non_serial_ifaces,
+};
+
+static const struct usb_device_id id_table [] = {
+ { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
+ { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */
+ { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */
+ { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */
+
+ { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
+ { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
+ { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
+ { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
+ { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
+ { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */
+ { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
+ { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */
+ { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
+ { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
+ { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
+ { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
+ { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U/3G */
+ /* Sierra Wireless MC5728 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0400, 0xFF, 0xFF, 0xFF) },
+
+ /* Sierra Wireless C597 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
+ /* Sierra Wireless T598 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
+ { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */
+ { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */
+ { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */
+ { USB_DEVICE(0x114F, 0x6000) }, /* Sierra Wireless Q26 Elite */
+
+ { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
+ { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
+ { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
+ { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */
+ { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */
+ { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */
+ { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
+ { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */
+ { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
+ { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */
+ { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
+ { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
+ { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */
+ { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
+ { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */
+ { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */
+ { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */
+ { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */
+ { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */
+ { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */
+ { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */
+ /* Sierra Wireless MC8790, MC8791, MC8792 Composite */
+ { USB_DEVICE(0x1199, 0x683C) },
+ { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */
+ /* Sierra Wireless MC8790, MC8791, MC8792 */
+ { USB_DEVICE(0x1199, 0x683E) },
+ { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */
+ { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */
+ { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */
+ { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */
+ { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */
+ { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */
+ { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */
+ { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */
+ /* Sierra Wireless C885 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)},
+ /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
+ /* Sierra Wireless C22/C33 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
+ /* Sierra Wireless HSPA Non-Composite Device */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
+ { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */
+ /* Sierra Wireless Direct IP modems */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68A3, 0xFF, 0xFF, 0xFF),
+ .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
+ },
+ /* AT&T Direct IP modems */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68A3, 0xFF, 0xFF, 0xFF),
+ .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
+ },
+ /* Sierra Wireless Direct IP LTE modems */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68AA, 0xFF, 0xFF, 0xFF),
+ .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
+ },
+ /* AT&T Direct IP LTE modems */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF),
+ .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
+ },
+ /* Wireless 5720 VZW Mobile Broadband (EVDO Rev-A) Minicard GPS Port */
+ { USB_DEVICE(0x413C, 0x8133) },
+
+ { }
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+/* per port private data */
+struct sierra_port_private {
+ spinlock_t lock; /* lock the structure */
+ int outstanding_urbs; /* number of out urbs in flight */
+
+ struct usb_anchor active;
+ struct usb_anchor delayed;
+
+ int num_out_urbs;
+ int num_in_urbs;
+ /* Input endpoints and buffers for this port */
+ struct urb *in_urbs[N_IN_URB_HM];
+
+ /* Settings for the port */
+ int rts_state; /* Handshaking pins (outputs) */
+ int dtr_state;
+ int cts_state; /* Handshaking pins (inputs) */
+ int dsr_state;
+ int dcd_state;
+ int ri_state;
+ unsigned int opened:1;
+};
+
+static int sierra_send_setup(struct usb_serial_port *port)
+{
+ struct usb_serial *serial = port->serial;
+ struct sierra_port_private *portdata = usb_get_serial_port_data(port);
+ __u16 interface = 0;
+ int val = 0;
+ int do_send = 0;
+ int retval;
+
+ dev_dbg(&port->dev, "%s\n", __func__);
+
+ if (portdata->dtr_state)
+ val |= 0x01;
+ if (portdata->rts_state)
+ val |= 0x02;
+
+ /* If composite device then properly report interface */
+ if (serial->num_ports == 1) {
+ interface = sierra_calc_interface(serial);
+ /* Control message is sent only to interfaces with
+ * interrupt_in endpoints
+ */
+ if (port->interrupt_in_urb) {
+ /* send control message */
+ do_send = 1;
+ }
+ }
+
+ /* Otherwise the need to do non-composite mapping */
+ else {
+ if (port->bulk_out_endpointAddress == 2)
+ interface = 0;
+ else if (port->bulk_out_endpointAddress == 4)
+ interface = 1;
+ else if (port->bulk_out_endpointAddress == 5)
+ interface = 2;
+
+ do_send = 1;
+ }
+ if (!do_send)
+ return 0;
+
+ usb_autopm_get_interface(serial->interface);
+ retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT);
+ usb_autopm_put_interface(serial->interface);
+
+ return retval;
+}
+
+static void sierra_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ktermios *old_termios)
+{
+ dev_dbg(&port->dev, "%s\n", __func__);
+ tty_termios_copy_hw(tty->termios, old_termios);
+ sierra_send_setup(port);
+}
+
+static int sierra_tiocmget(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ unsigned int value;
+ struct sierra_port_private *portdata;
+
+ dev_dbg(&port->dev, "%s\n", __func__);
+ portdata = usb_get_serial_port_data(port);
+
+ value = ((portdata->rts_state) ? TIOCM_RTS : 0) |
+ ((portdata->dtr_state) ? TIOCM_DTR : 0) |
+ ((portdata->cts_state) ? TIOCM_CTS : 0) |
+ ((portdata->dsr_state) ? TIOCM_DSR : 0) |
+ ((portdata->dcd_state) ? TIOCM_CAR : 0) |
+ ((portdata->ri_state) ? TIOCM_RNG : 0);
+
+ return value;
+}
+
+static int sierra_tiocmset(struct tty_struct *tty,
+ unsigned int set, unsigned int clear)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct sierra_port_private *portdata;
+
+ portdata = usb_get_serial_port_data(port);
+
+ if (set & TIOCM_RTS)
+ portdata->rts_state = 1;
+ if (set & TIOCM_DTR)
+ portdata->dtr_state = 1;
+
+ if (clear & TIOCM_RTS)
+ portdata->rts_state = 0;
+ if (clear & TIOCM_DTR)
+ portdata->dtr_state = 0;
+ return sierra_send_setup(port);
+}
+
+static void sierra_release_urb(struct urb *urb)
+{
+ struct usb_serial_port *port;
+ if (urb) {
+ port = urb->context;
+ dev_dbg(&port->dev, "%s: %p\n", __func__, urb);
+ usb_free_urb(urb);
+ }
+}
+
+/* Sysfs Attributes */
+
+static ssize_t show_suspend_status(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct usb_serial_port *port;
+ struct sierra_port_private *portdata;
+ struct sierra_intf_private *intfdata;
+ unsigned long flags;
+ unsigned int flag_suspended = 0;
+
+ port = to_usb_serial_port(dev);
+ portdata = usb_get_serial_port_data(port);
+ intfdata = port->serial->private;
+
+ spin_lock_irqsave(&intfdata->susp_lock, flags);
+ flag_suspended = intfdata->suspended;
+ spin_unlock_irqrestore(&intfdata->susp_lock, flags);
+
+ return snprintf(buf, PORTION_LEN, "%i\n", flag_suspended);
+}
+
+static ssize_t show_stats(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct usb_serial_port *port;
+ struct sierra_intf_private *intfdata;
+
+ port = to_usb_serial_port(dev);
+ intfdata = port->serial->private;
+
+ return snprintf(buf, PORTION_LEN,
+ "rx: %i B\tindat: %i\tindat err: %i\n"
+ "tx: %i B\toutdat: %i\toutdat err: %i\n"
+ "writes: %i\t\twrite err: %i\n"
+ "delayed writes: %i\tdelayed write err: %i\n",
+ atomic_read(&intfdata->stats.rx_bytes), atomic_read(&intfdata->stats.indat_cb_cnt), atomic_read(&intfdata->stats.indat_cb_fail),
+ atomic_read(&intfdata->stats.tx_bytes), atomic_read(&intfdata->stats.outdat_cb_cnt), atomic_read(&intfdata->stats.outdat_cb_fail),
+ atomic_read(&intfdata->stats.write_cnt), atomic_read(&intfdata->stats.write_err),
+ atomic_read(&intfdata->stats.delayed_writes), atomic_read(&intfdata->stats.delayed_write_err)
+ );
+}
+
+/* Read only suspend status */
+static DEVICE_ATTR(suspend_status, S_IWUSR | S_IRUGO, show_suspend_status,
+ NULL);
+
+/* Read only statistics */
+static DEVICE_ATTR(stats, S_IWUSR | S_IRUGO, show_stats, NULL);
+
+static int sierra_create_sysfs_attrs(struct usb_serial_port *port)
+{
+ int result = 0;
+
+ result = device_create_file(&port->dev, &dev_attr_stats);
+ if (unlikely (result < 0))
+ return result;
+ return device_create_file(&port->dev, &dev_attr_suspend_status);
+}
+
+static int sierra_remove_sysfs_attrs(struct usb_serial_port *port)
+{
+ device_remove_file(&port->dev, &dev_attr_stats);
+ device_remove_file(&port->dev, &dev_attr_suspend_status);
+ return 0;
+}
+
+static void sierra_outdat_callback(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+ struct sierra_port_private *portdata = usb_get_serial_port_data(port);
+ struct sierra_intf_private *intfdata;
+ int status = urb->status;
+
+ dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
+ intfdata = port->serial->private;
+
+ usb_autopm_put_interface_async(port->serial->interface);
+
+ atomic_inc(&intfdata->stats.outdat_cb_cnt);
+
+ if (status) {
+ dev_dbg(&port->dev, "%s - nonzero write bulk status "
+ "received: %d\n", __func__, status);
+ atomic_inc(&intfdata->stats.outdat_cb_fail);
+ }
+
+ spin_lock(&portdata->lock);
+ --portdata->outstanding_urbs;
+ spin_unlock(&portdata->lock);
+
+ spin_lock(&intfdata->susp_lock);
+ --intfdata->in_flight;
+ spin_unlock(&intfdata->susp_lock);
+
+ usb_serial_port_softint(port);
+}
+
+/* Write */
+static int sierra_write(struct tty_struct *tty,
+ struct usb_serial_port *port,
+ const unsigned char *buf, int count)
+{
+ struct sierra_port_private *portdata = usb_get_serial_port_data(port);
+ struct sierra_intf_private *intfdata;
+ struct usb_serial *serial = port->serial;
+ unsigned long flags;
+ unsigned char *buffer;
+ struct urb *urb;
+ size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER);
+ int retval = 0;
+
+ /* verify that we actually have some data to write */
+ if (count == 0)
+ return 0;
+
+ dev_dbg(&port->dev, "%s: write (%zu bytes)\n", __func__, writesize);
+
+ intfdata = serial->private;
+
+ spin_lock_irqsave(&portdata->lock, flags);
+ if (portdata->outstanding_urbs > portdata->num_out_urbs) {
+ spin_unlock_irqrestore(&portdata->lock, flags);
+ dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
+ return 0;
+ }
+ portdata->outstanding_urbs++;
+ spin_unlock_irqrestore(&portdata->lock, flags);
+
+ retval = usb_autopm_get_interface_async(serial->interface);
+ if (unlikely(retval < 0)) {
+ spin_lock_irqsave(&portdata->lock, flags);
+ portdata->outstanding_urbs--;
+ spin_unlock_irqrestore(&portdata->lock, flags);
+ return retval;
+ }
+
+ buffer = kmalloc(writesize, GFP_ATOMIC);
+ if (!buffer) {
+ dev_err(&port->dev, "out of memory\n");
+ spin_lock_irqsave(&portdata->lock, flags);
+ --portdata->outstanding_urbs;
+ spin_unlock_irqrestore(&portdata->lock, flags);
+ usb_autopm_put_interface_async(serial->interface);
+ return -ENOMEM;
+ }
+
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (!urb) {
+ dev_err(&port->dev, "no more free urbs\n");
+ kfree(buffer);
+ spin_lock_irqsave(&portdata->lock, flags);
+ --portdata->outstanding_urbs;
+ spin_unlock_irqrestore(&portdata->lock, flags);
+ usb_autopm_put_interface_async(serial->interface);
+ return -ENOMEM;
+ }
+
+ memcpy(buffer, buf, writesize);
+
+ usb_serial_debug_data(debug, &port->dev, __func__, writesize, buffer);
+
+ usb_fill_bulk_urb(urb, serial->dev,
+ usb_sndbulkpipe(serial->dev,
+ port->bulk_out_endpointAddress),
+ buffer, writesize, sierra_outdat_callback, port);
+
+ /* Handle the need to send a zero length packet and release the
+ * transfer buffer
+ */
+ urb->transfer_flags |= (URB_ZERO_PACKET | URB_FREE_BUFFER);
+
+ spin_lock_irqsave(&intfdata->susp_lock, flags);
+
+ if (intfdata->suspended) {
+ usb_anchor_urb(urb, &portdata->delayed);
+ spin_unlock_irqrestore(&intfdata->susp_lock, flags);
+ /* release our reference to this urb, the USB core will
+ * eventually free it entirely */
+ usb_free_urb(urb);
+ return writesize;
+ }
+ usb_anchor_urb(urb, &portdata->active);
+
+ /* send it down the pipe */
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
+ if (retval) {
+ usb_unanchor_urb(urb);
+ spin_unlock_irqrestore(&intfdata->susp_lock, flags);
+
+ dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
+ "with status = %d\n", __func__, retval);
+ usb_free_urb(urb);
+ spin_lock_irqsave(&portdata->lock, flags);
+ --portdata->outstanding_urbs;
+ spin_unlock_irqrestore(&portdata->lock, flags);
+ usb_autopm_put_interface_async(serial->interface);
+ atomic_inc(&intfdata->stats.write_err);
+ return retval;
+ } else {
+ intfdata->in_flight++;
+ spin_unlock_irqrestore(&intfdata->susp_lock, flags);
+ atomic_inc(&intfdata->stats.write_cnt);
+ atomic_add(writesize, &intfdata->stats.tx_bytes);
+ }
+ /* release our reference to this urb, the USB core will eventually
+ * free it entirely */
+ usb_free_urb(urb);
+
+ return writesize;
+}
+
+static void sierra_indat_callback(struct urb *urb)
+{
+ int err;
+ int endpoint;
+ struct usb_serial_port *port = urb->context;
+ struct tty_struct *tty;
+ struct sierra_intf_private *intfdata;
+ unsigned char *data = urb->transfer_buffer;
+ int status = urb->status;
+
+ endpoint = usb_pipeendpoint(urb->pipe);
+
+ dev_dbg(&port->dev, "%s: %p\n", __func__, urb);
+
+ intfdata = port->serial->private;
+
+ atomic_inc(&intfdata->stats.indat_cb_cnt); /* indat calls */
+
+ if (status) {
+ dev_dbg(&port->dev, "%s: nonzero status: %d on"
+ " endpoint %02x\n", __func__, status, endpoint);
+ atomic_inc(&intfdata->stats.indat_cb_fail); /* indat fails */
+ } else {
+ if (urb->actual_length) {
+ tty = tty_port_tty_get(&port->port);
+ if (tty) {
+ tty_insert_flip_string(tty, data,
+ urb->actual_length);
+ tty_flip_buffer_push(tty);
+
+ tty_kref_put(tty);
+ /* tty invalid after this point */
+ /* rx'd bytes */
+ atomic_add(urb->actual_length,
+ &intfdata->stats.rx_bytes);
+ usb_serial_debug_data(debug, &port->dev,
+ __func__, urb->actual_length, data);
+ }
+ } else {
+ dev_dbg(&port->dev, "%s: empty read urb"
+ " received\n", __func__);
+ }
+ }
+
+ /* Resubmit urb so we continue receiving */
+ if (status != -ESHUTDOWN && status != -ENOENT && status != -ENODEV) {
+ usb_mark_last_busy(port->serial->dev);
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err && err != -ENODEV)
+ dev_err(&port->dev, "resubmit read urb failed."
+ "(%d)\n", err);
+ }
+
+ return;
+}
+
+static void sierra_instat_callback(struct urb *urb)
+{
+ int err;
+ int status = urb->status;
+ struct usb_serial_port *port = urb->context;
+ struct sierra_port_private *portdata = usb_get_serial_port_data(port);
+ struct usb_serial *serial = port->serial;
+
+ dev_dbg(&port->dev, "%s: %p\n", __func__, urb);
+
+ if (status == 0) {
+ struct usb_ctrlrequest *req_pkt =
+ (struct usb_ctrlrequest *)urb->transfer_buffer;
+
+ const u16 *sigp = (u16 *)(req_pkt + 1);
+ /* usb_ctrlrequest we parsed is followed by two bytes of data
+ * make sure we received that many bytes
+ */
+ if (urb->actual_length >= sizeof(*req_pkt) + sizeof(*sigp) &&
+ req_pkt->bRequestType == USB_REQUEST_TYPE_CLASS &&
+ req_pkt->bRequest == USB_REQUEST_IFACE) {
+ int old_dcd_state;
+ const u16 signals = get_unaligned_le16(sigp);
+ struct tty_struct *tty;
+
+ dev_dbg(&port->dev, "%s: signal 0x%x\n", __func__,
+ signals);
+
+ old_dcd_state = portdata->dcd_state;
+ /* Note: CTS from modem is in reverse logic! */
+ portdata->cts_state = ((signals & 0x100) ? 0 : 1);
+ portdata->dcd_state = ((signals & 0x01) ? 1 : 0);
+ portdata->dsr_state = ((signals & 0x02) ? 1 : 0);
+ portdata->ri_state = ((signals & 0x08) ? 1 : 0);
+
+ tty = tty_port_tty_get(&port->port);
+ if (tty && !C_CLOCAL(tty) &&
+ old_dcd_state && !portdata->dcd_state)
+ tty_hangup(tty);
+ tty_kref_put(tty);
+ } else {
+ /* dump the data we don't understand to log */
+ usb_serial_debug_data(1, &port->dev, __func__,
+ urb->actual_length, urb->transfer_buffer);
+ }
+ } else
+ dev_dbg(&port->dev, "%s: error %d\n", __func__, status);
+
+ /* Resubmit urb so we continue receiving IRQ data */
+ if (status != -ESHUTDOWN && status != -ENOENT && status != -ENODEV) {
+ usb_mark_last_busy(serial->dev);
+ urb->dev = serial->dev;
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err && err != -ENODEV)
+ dev_err(&port->dev, "%s: resubmit intr urb "
+ "failed. (%d)\n", __func__, err);
+ }
+}
+
+static int sierra_write_room(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct sierra_port_private *portdata = usb_get_serial_port_data(port);
+ unsigned long flags;
+ int retval;
+
+ dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
+
+ /* try to give a good number back based on if we have any free urbs at
+ * this point in time */
+ retval = MAX_TRANSFER;
+
+ spin_lock_irqsave(&portdata->lock, flags);
+ if (portdata->outstanding_urbs >= portdata->num_out_urbs) {
+ retval = 0;
+ }
+ spin_unlock_irqrestore(&portdata->lock, flags);
+
+ return retval;
+}
+
+static void sierra_stop_rx_urbs(struct usb_serial_port *port)
+{
+ int i;
+ struct sierra_port_private *portdata = usb_get_serial_port_data(port);
+
+ for (i = 0; i < portdata->num_in_urbs; i++)
+ usb_kill_urb(portdata->in_urbs[i]);
+
+ usb_kill_urb(port->interrupt_in_urb);
+}
+
+static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags)
+{
+ int ok_cnt;
+ int err = -EINVAL;
+ int i;
+ struct urb *urb;
+ struct sierra_port_private *portdata = usb_get_serial_port_data(port);
+
+ ok_cnt = 0;
+ for (i = 0; i < portdata->num_in_urbs; i++) {
+ urb = portdata->in_urbs[i];
+ if (!urb)
+ continue;
+ urb->transfer_flags |= URB_FREE_BUFFER;
+ err = usb_submit_urb(urb, mem_flags);
+ if (err) {
+ dev_err(&port->dev, "%s: submit urb failed: %d\n",
+ __func__, err);
+ } else {
+ ok_cnt++;
+ }
+ }
+
+ if (ok_cnt && port->interrupt_in_urb) {
+ err = usb_submit_urb(port->interrupt_in_urb, mem_flags);
+ if (err) {
+ dev_err(&port->dev, "%s: submit intr urb failed: %d\n",
+ __func__, err);
+ }
+ }
+
+ if (ok_cnt > 0) /* at least one rx urb submitted */
+ return 0;
+ else
+ return err;
+}
+
+static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint,
+ int dir, void *ctx, int len,
+ gfp_t mem_flags,
+ usb_complete_t callback)
+{
+ struct urb *urb;
+ u8 *buf;
+
+ if (endpoint == -1)
+ return NULL;
+
+ urb = usb_alloc_urb(0, mem_flags);
+ if (urb == NULL) {
+ dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n",
+ __func__, endpoint);
+ return NULL;
+ }
+
+ buf = kmalloc(len, mem_flags);
+ if (buf) {
+ /* Fill URB using supplied data */
+ usb_fill_bulk_urb(urb, serial->dev,
+ usb_sndbulkpipe(serial->dev, endpoint) | dir,
+ buf, len, callback, ctx);
+
+ /* debug */
+ dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__,
+ dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
+ } else {
+ dev_dbg(&serial->dev->dev, "%s %c u:%p d:%p\n", __func__,
+ dir == USB_DIR_IN ? 'i' : 'o', urb, buf);
+
+ sierra_release_urb(urb);
+ urb = NULL;
+ }
+
+ return urb;
+}
+static void sierra_close(struct usb_serial_port *port)
+{
+ int i;
+ struct urb *urb;
+ struct usb_serial *serial = port->serial;
+ struct sierra_port_private *portdata;
+ struct sierra_intf_private *intfdata = port->serial->private;
+
+ dev_dbg(&port->dev, "%s\n", __func__);
+ portdata = usb_get_serial_port_data(port);
+
+ portdata->rts_state = 0;
+ portdata->dtr_state = 0;
+
+ usb_autopm_get_interface(serial->interface);
+
+ if (serial->dev) {
+ mutex_lock(&serial->disc_mutex);
+ if (!serial->disconnected)
+ sierra_send_setup(port);
+ mutex_unlock(&serial->disc_mutex);
+ spin_lock_irq(&intfdata->susp_lock);
+ portdata->opened = 0;
+ spin_unlock_irq(&intfdata->susp_lock);
+
+ /* Stop reading urbs */
+ sierra_stop_rx_urbs(port);
+ /* .. and release them */
+ for (i = 0; i < portdata->num_in_urbs; i++) {
+ sierra_release_urb(portdata->in_urbs[i]);
+ portdata->in_urbs[i] = NULL;
+ }
+ while((urb = usb_get_from_anchor(&portdata->delayed))) {
+ sierra_release_urb(urb);
+ usb_autopm_put_interface(serial->interface);
+ }
+ /* wait for active to finish */
+ usb_wait_anchor_empty_timeout(&portdata->active, 500);
+ usb_kill_anchored_urbs(&portdata->active);
+
+ }
+}
+
+static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port)
+{
+ struct sierra_port_private *portdata;
+ struct usb_serial *serial = port->serial;
+ struct sierra_intf_private *intfdata = serial->private;
+ int i;
+ int err;
+ int endpoint;
+ struct urb *urb;
+
+ portdata = usb_get_serial_port_data(port);
+
+ dev_dbg(&port->dev, "%s\n", __func__);
+
+ /* Set some sane defaults */
+ portdata->rts_state = 1;
+ portdata->dtr_state = 1;
+
+
+ endpoint = port->bulk_in_endpointAddress;
+ for (i = 0; i < portdata->num_in_urbs; i++) {
+ urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port,
+ IN_BUFLEN, GFP_KERNEL,
+ sierra_indat_callback);
+ portdata->in_urbs[i] = urb;
+ }
+ /* clear halt condition */
+ usb_clear_halt(serial->dev,
+ usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN);
+
+ /* reset outstanding out urbs counter */
+ spin_lock_irq(&portdata->lock);
+ portdata->outstanding_urbs = 0;
+ spin_unlock_irq(&portdata->lock);
+
+ err = sierra_submit_rx_urbs(port, GFP_KERNEL);
+ if (err) {
+ /* do everything as in close() but do not call close() because
+ * usbserial calls sierra_open() with mutex taken;
+ * then if we call sierra_close() inside sierra_open() we
+ * violate 'no nested mutexes' kernel condition
+ */
+ portdata->rts_state = 0;
+ portdata->dtr_state = 0;
+ usb_autopm_get_interface(serial->interface);
+ /* Stop reading urbs */
+ sierra_stop_rx_urbs(port);
+ /* .. and release them */
+ for (i = 0; i < portdata->num_in_urbs; i++) {
+ sierra_release_urb(portdata->in_urbs[i]);
+ portdata->in_urbs[i] = NULL;
+ }
+ while((urb = usb_get_from_anchor(&portdata->delayed))) {
+ sierra_release_urb(urb);
+ usb_autopm_put_interface(serial->interface);
+ }
+ /* wait for active to finish */
+ usb_wait_anchor_empty_timeout(&portdata->active, 500);
+ usb_kill_anchored_urbs(&portdata->active);
+ /* restore balance for autopm */
+ usb_autopm_put_interface(serial->interface);
+ return err;
+ }
+ sierra_send_setup(port);
+
+ spin_lock_irq(&intfdata->susp_lock);
+ portdata->opened = 1;
+ spin_unlock_irq(&intfdata->susp_lock);
+ usb_autopm_put_interface(serial->interface);
+
+ return 0;
+}
+
+static void sierra_dtr_rts(struct usb_serial_port *port, int on)
+{
+ struct usb_serial *serial = port->serial;
+ struct sierra_port_private *portdata;
+
+ portdata = usb_get_serial_port_data(port);
+ portdata->rts_state = on;
+ portdata->dtr_state = on;
+
+ if (serial->dev) {
+ mutex_lock(&serial->disc_mutex);
+ if (!serial->disconnected)
+ sierra_send_setup(port);
+ mutex_unlock(&serial->disc_mutex);
+ }
+}
+
+static int sierra_startup(struct usb_serial *serial)
+{
+ struct usb_serial_port *port = NULL;
+ struct sierra_port_private *portdata = NULL;
+ struct sierra_iface_info *himemoryp = NULL;
+ int i;
+ u8 ifnum;
+ u16 fw_attr;
+ int result;
+
+ dev_dbg(&serial->dev->dev, "%s\n", __func__);
+
+ /* Set Device mode to D0 */
+ sierra_set_power_state(serial->dev, 0x0000);
+
+ /* Check NMEA and set */
+ if (nmea)
+ sierra_vsc_set_nmea(serial->dev, 1);
+
+ if (serial->num_ports) {
+ /* Note: One big piece of memory is allocated for all ports
+ * private data in one shot. This memory is split into equal
+ * pieces for each port.
+ */
+ portdata = (struct sierra_port_private *)kzalloc
+ (sizeof(*portdata) * serial->num_ports, GFP_KERNEL);
+ if (!portdata) {
+ dev_dbg(&serial->dev->dev, "%s: No memory!\n", __func__);
+ return -ENOMEM;
+ }
+ }
+
+ /* Now setup per port private data */
+ for (i = 0; i < serial->num_ports; i++, portdata++) {
+ port = serial->port[i];
+ /* Initialize selected members of private data because these
+ * may be referred to right away */
+ spin_lock_init(&portdata->lock);
+ init_usb_anchor(&portdata->active);
+ init_usb_anchor(&portdata->delayed);
+
+ portdata->cts_state = 1;
+
+ ifnum = i;
+ /* Assume low memory requirements */
+ portdata->num_out_urbs = N_OUT_URB;
+ portdata->num_in_urbs = N_IN_URB;
+
+ /* Determine actual memory requirements */
+ if (serial->num_ports == 1) {
+ /* Get interface number for composite device */
+ ifnum = sierra_calc_interface(serial);
+ himemoryp =
+ (struct sierra_iface_info *)&typeB_interface_list;
+ if (is_himemory(ifnum, himemoryp)) {
+ portdata->num_out_urbs = N_OUT_URB_HM;
+ portdata->num_in_urbs = N_IN_URB_HM;
+ }
+ }
+ else {
+ himemoryp =
+ (struct sierra_iface_info *)&typeA_interface_list;
+ if (is_himemory(i, himemoryp)) {
+ portdata->num_out_urbs = N_OUT_URB_HM;
+ portdata->num_in_urbs = N_IN_URB_HM;
+ }
+ }
+ dev_dbg(&serial->dev->dev,
+ "Memory usage (urbs) interface #%d, in=%d, out=%d\n",
+ ifnum,portdata->num_in_urbs, portdata->num_out_urbs );
+ /* Set the port private data pointer */
+ usb_set_serial_port_data(port, portdata);
+ }
+ serial->interface->needs_remote_wakeup = 1;
+
+ result = sierra_get_fw_attr(serial->dev, &fw_attr);
+ if (result == sizeof(fw_attr) && (fw_attr & SWI_FW_ATTR_PM_MASK) ) {
+ dev_info(&serial->dev->dev,
+ "APM supported, enabling autosuspend.\n");
+/*******************************************************************************
+ * If you want the default /sys/bus/usb/devices/.../.../power/level to be forced
+ * to auto, the following needs to be compiled in.
+ */
+#ifdef POWER_LEVEL_AUTO
+ /* make power level default be 'auto' */
+ usb_enable_autosuspend(serial->dev);
+#endif
+ } else {
+ usb_disable_autosuspend(serial->dev);
+ }
+
+ return 0;
+}
+
+static void sierra_release(struct usb_serial *serial)
+{
+ int i;
+ struct usb_serial_port *port;
+ struct sierra_intf_private *intfdata = serial->private;
+
+ dev_dbg(&serial->dev->dev, "%s\n", __func__);
+
+ if (serial->num_ports > 0) {
+ port = serial->port[0];
+ if (port)
+ /* Note: The entire piece of memory that was allocated
+ * in the startup routine can be released by passing
+ * a pointer to the beginning of the piece.
+ * This address corresponds to the address of the chunk
+ * that was given to port 0.
+ */
+ kfree(usb_get_serial_port_data(port));
+ }
+
+ for (i = 0; i < serial->num_ports; ++i) {
+ port = serial->port[i];
+ if (!port)
+ continue;
+ usb_set_serial_port_data(port, NULL);
+ }
+ kfree(intfdata);
+}
+
+#ifdef CONFIG_PM
+static void stop_read_write_urbs(struct usb_serial *serial)
+{
+ int i;
+ struct usb_serial_port *port;
+ struct sierra_port_private *portdata;
+
+ /* Stop reading/writing urbs */
+ for (i = 0; i < serial->num_ports; ++i) {
+ port = serial->port[i];
+ portdata = usb_get_serial_port_data(port);
+ sierra_stop_rx_urbs(port);
+ usb_kill_anchored_urbs(&portdata->active);
+ }
+}
+
+static int sierra_suspend(struct usb_serial *serial, pm_message_t message)
+{
+ struct sierra_intf_private *intfdata;
+
+ dev_dbg(&serial->dev->dev, "%s\n", __func__);
+
+ intfdata = serial->private;
+ spin_lock_irq(&intfdata->susp_lock);
+
+ if (message.event & PM_EVENT_AUTO) {
+ if (intfdata->in_flight) {
+ spin_unlock_irq(&intfdata->susp_lock);
+ return -EBUSY;
+ }
+ }
+ intfdata->suspended = 1;
+ spin_unlock_irq(&intfdata->susp_lock);
+
+ stop_read_write_urbs(serial);
+
+ return 0;
+}
+
+static int sierra_resume(struct usb_serial *serial)
+{
+ struct usb_serial_port *port;
+ struct sierra_intf_private *intfdata = serial->private;
+ struct sierra_port_private *portdata;
+ struct urb *urb;
+ int ec = 0;
+ int i, err;
+ int len;
+ int failed_submits;
+
+ dev_dbg(&serial->dev->dev, "%s\n", __func__);
+
+ spin_lock_irq(&intfdata->susp_lock);
+ for (i = 0; i < serial->num_ports; i++) {
+ port = serial->port[i];
+ portdata = usb_get_serial_port_data(port);
+ failed_submits = 0;
+ while ((urb = usb_get_from_anchor(&portdata->delayed))) {
+ usb_anchor_urb(urb, &portdata->active);
+ intfdata->in_flight++;
+ len = urb->transfer_buffer_length;
+ err = usb_submit_urb(urb, GFP_ATOMIC);
+ if (err < 0) {
+ intfdata->in_flight--;
+ usb_unanchor_urb(urb);
+ failed_submits++;
+ atomic_inc(&intfdata->stats.delayed_write_err);
+ /* fix pm_usage_cnt */
+ usb_autopm_put_interface_async(
+ port->serial->interface);
+ } else {
+ atomic_inc(&intfdata->stats.delayed_writes);
+ atomic_add(len, &intfdata->stats.tx_bytes);
+ }
+ /* release urb - usb_get_from_anchor increased kref */
+ usb_free_urb(urb);
+ }
+
+ if (portdata->opened) {
+ err = sierra_submit_rx_urbs(port, GFP_ATOMIC);
+ if (err)
+ ec++;
+ }
+ if (failed_submits) {
+ /* fix outstanding_urbs counter */
+ spin_lock(&portdata->lock); /* assuming irq disabled */
+ portdata->outstanding_urbs -= failed_submits;
+ spin_unlock(&portdata->lock);
+ /* unblock a writer */
+ usb_serial_port_softint(port);
+ }
+ }
+ intfdata->suspended = 0;
+ spin_unlock_irq(&intfdata->susp_lock);
+
+ return ec ? -EIO : 0;
+}
+#else
+#define sierra_suspend NULL
+#define sierra_resume NULL
+#endif
+
+static int sierra_reset_resume(struct usb_interface *intf)
+{
+ struct usb_serial *serial = usb_get_intfdata(intf);
+ dev_err(&serial->dev->dev, "%s\n", __func__);
+ return usb_serial_resume(intf);
+}
+
+static struct usb_driver sierra_driver = {
+ .name = "sierra",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .suspend = usb_serial_suspend,
+ .resume = usb_serial_resume,
+ .reset_resume = sierra_reset_resume,
+ .id_table = id_table,
+
+ .no_dynamic_id = 1,
+ .supports_autosuspend = 1,
+};
+
+
+static struct usb_serial_driver sierra_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "sierra",
+ },
+ .description = "Sierra USB modem",
+ .id_table = id_table,
+ .usb_driver = &sierra_driver,
+ .calc_num_ports = sierra_calc_num_ports,
+ .probe = sierra_probe,
+ .open = sierra_open,
+ .close = sierra_close,
+ .dtr_rts = sierra_dtr_rts,
+ .write = sierra_write,
+ .write_room = sierra_write_room,
+ .set_termios = sierra_set_termios,
+ .tiocmget = sierra_tiocmget,
+ .tiocmset = sierra_tiocmset,
+ .attach = sierra_startup,
+ .release = sierra_release,
+ .port_probe = sierra_create_sysfs_attrs,
+ .port_remove = sierra_remove_sysfs_attrs,
+ .suspend = sierra_suspend,
+ .resume = sierra_resume,
+ .read_int_callback = sierra_instat_callback,
+
+};
+
+/* Functions used by new usb-serial code. */
+static int __init sierra_init(void)
+{
+ int retval;
+ retval = usb_serial_register(&sierra_device);
+ if (retval)
+ goto failed_device_register;
+
+ retval = usb_register(&sierra_driver);
+ if (retval)
+ goto failed_driver_register;
+
+ printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+ DRIVER_DESC "\n");
+
+ return 0;
+
+failed_driver_register:
+ usb_serial_deregister(&sierra_device);
+failed_device_register:
+ return retval;
+}
+
+static void __exit sierra_exit(void)
+{
+ usb_deregister(&sierra_driver);
+ usb_serial_deregister(&sierra_device);
+}
+
+module_init(sierra_init);
+module_exit(sierra_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE("GPL");
+
+module_param(nmea, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(nmea, "NMEA streaming");
+
+module_param(debug, bool, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug messages");
--- /dev/null
+/*
+ * USB-to-WWAN Driver for Sierra Wireless modems
+ *
+ * Copyright (C) 2008 - 2011 Paxton Smith, Matthew Safar, Rory Filer
+ * <linux@sierrawireless.com>
+ *
+ * Portions of this based on the cdc_ether driver by David Brownell (2003-2005)
+ * and Ole Andre Vadla Ravnas (ActiveSync) (2006).
+ *
+ * IMPORTANT DISCLAIMER: This driver is not commercially supported by
+ * Sierra Wireless. Use at your own risk.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#define DRIVER_VERSION "v.3.2"
+#define DRIVER_AUTHOR "Paxton Smith, Matthew Safar, Rory Filer"
+#define DRIVER_DESC "USB-to-WWAN Driver for Sierra Wireless modems"
+static const char driver_name[] = "sierra_net";
+
+/* if defined debug messages enabled */
+/*#define DEBUG*/
+/* more debug messages */
+/*#define VERBOSE*/
+/* Uncomment to force power level set to auto when attaching a device */
+/*#define POWER_LEVEL_AUTO*/
+
+#include <linux/module.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/usb.h>
+#include <linux/usb/cdc.h>
+#include <net/ip.h>
+#include <net/udp.h>
+#include <asm/unaligned.h>
+#include <linux/usb/usbnet.h>
+
+#define SWI_USB_REQUEST_GET_FW_ATTR 0x06
+#define SWI_GET_FW_ATTR_MASK 0x08
+#define SWI_GET_FW_ATTR_APM 0x2
+
+/* atomic counter partially included in MAC address to make sure 2 devices
+ * do not end up with the same MAC - concept breaks in case of > 255 ifaces
+ */
+static atomic_t iface_counter = ATOMIC_INIT(0);
+
+/*
+ * SYNC Timer Delay definition used to set the expiry time
+ */
+#define SIERRA_NET_SYNCDELAY (2*HZ)
+
+/* Max. MTU supported. The modem buffers are limited to 1500 */
+#define SIERRA_NET_MAX_SUPPORTED_MTU 1500
+
+/* The SIERRA_NET_USBCTL_BUF_LEN defines a buffer size allocated for control
+ * message reception ... and thus the max. received packet.
+ * (May be the cause for parse_hip returning -EINVAL)
+ */
+#define SIERRA_NET_USBCTL_BUF_LEN 1024
+
+/* The SIERRA_NET_RX_URB_SZ defines the receive urb size
+ * for optimal throughput.
+ */
+#define SIERRA_NET_RX_URB_SZ 1540
+
+/* list of interface numbers - used for constructing interface lists */
+struct sierra_net_iface_info {
+ const u32 infolen; /* number of interface numbers on list */
+ const u8 *ifaceinfo; /* pointer to the array holding the numbers */
+};
+
+struct sierra_net_info_data {
+ u16 rx_urb_size;
+ struct sierra_net_iface_info whitelist;
+};
+
+/* Private data structure */
+struct sierra_net_data {
+
+ u8 ethr_hdr_tmpl[ETH_HLEN]; /* ethernet header template for rx'd pkts */
+
+ u16 link_up; /* air link up or down */
+ u8 tx_hdr_template[4]; /* part of HIP hdr for tx'd packets */
+
+ u8 sync_msg[4]; /* SYNC message */
+ u8 shdwn_msg[4]; /* Shutdown message */
+
+ /* Backpointer to the container */
+ struct usbnet *usbnet;
+
+ u8 ifnum; /* interface number */
+
+/* Bit masks, must be a power of 2 */
+#define SIERRA_NET_EVENT_RESP_AVAIL 0x01
+#define SIERRA_NET_TIMER_EXPIRY 0x02
+ unsigned long kevent_flags;
+ struct work_struct sierra_net_kevent;
+ struct timer_list sync_timer; /* For retrying SYNC sequence */
+};
+
+struct param {
+ int is_present;
+ union {
+ void *ptr;
+ u32 dword;
+ u16 word;
+ u8 byte;
+ };
+};
+
+/* HIP message type */
+#define SIERRA_NET_HIP_EXTENDEDID 0x7F
+#define SIERRA_NET_HIP_HSYNC_ID 0x60 /* Modem -> host */
+#define SIERRA_NET_HIP_RESTART_ID 0x62 /* Modem -> host */
+#define SIERRA_NET_HIP_MSYNC_ID 0x20 /* Host -> modem */
+#define SIERRA_NET_HIP_SHUTD_ID 0x26 /* Host -> modem */
+
+#define SIERRA_NET_HIP_EXT_IP_IN_ID 0x0202
+#define SIERRA_NET_HIP_EXT_IP_OUT_ID 0x0002
+
+/* 3G UMTS Link Sense Indication definitions */
+#define SIERRA_NET_HIP_LSI_UMTSID 0x78
+
+/* Reverse Channel Grant Indication HIP message */
+#define SIERRA_NET_HIP_RCGI 0x64
+
+/* LSI Protocol types */
+#define SIERRA_NET_PROTOCOL_UMTS 0x01
+/* LSI Coverage */
+#define SIERRA_NET_COVERAGE_NONE 0x00
+#define SIERRA_NET_COVERAGE_NOPACKET 0x01
+
+/* LSI Session */
+#define SIERRA_NET_SESSION_IDLE 0x00
+/* LSI Link types */
+#define SIERRA_NET_AS_LINK_TYPE_IPv4 0x00
+#define SIERRA_NET_AS_LINK_TYPE_IPv6 0x02
+
+struct lsi_umts {
+ u8 protocol;
+ u8 unused1;
+ __be16 length;
+ /* eventually use a union for the rest - assume umts for now */
+ u8 coverage;
+ u8 unused2[41];
+ u8 session_state;
+ u8 unused3[33];
+ u8 link_type;
+ u8 pdp_addr_len; /* NW-supplied PDP address len */
+ u8 pdp_addr[16]; /* NW-supplied PDP address (bigendian)) */
+ u8 unused4[23];
+ u8 dns1_addr_len; /* NW-supplied 1st DNS address len (bigendian) */
+ u8 dns1_addr[16]; /* NW-supplied 1st DNS address */
+ u8 dns2_addr_len; /* NW-supplied 2nd DNS address len */
+ u8 dns2_addr[16]; /* NW-supplied 2nd DNS address (bigendian)*/
+ u8 wins1_addr_len; /* NW-supplied 1st Wins address len */
+ u8 wins1_addr[16]; /* NW-supplied 1st Wins address (bigendian)*/
+ u8 wins2_addr_len; /* NW-supplied 2nd Wins address len */
+ u8 wins2_addr[16]; /* NW-supplied 2nd Wins address (bigendian) */
+ u8 unused5[4];
+ u8 gw_addr_len; /* NW-supplied GW address len */
+ u8 gw_addr[16]; /* NW-supplied GW address (bigendian) */
+ u8 reserved[8];
+} __packed;
+
+#define SIERRA_NET_LSI_COMMON_LEN 4
+#define SIERRA_NET_LSI_UMTS_LEN (sizeof(struct lsi_umts))
+#define SIERRA_NET_LSI_UMTS_STATUS_LEN \
+ (SIERRA_NET_LSI_UMTS_LEN - SIERRA_NET_LSI_COMMON_LEN)
+
+/* Forward definitions */
+static void sierra_sync_timer(unsigned long syncdata);
+static int sierra_net_change_mtu(struct net_device *net, int new_mtu);
+
+/* Our own net device operations structure */
+static const struct net_device_ops sierra_net_device_ops = {
+ .ndo_open = usbnet_open,
+ .ndo_stop = usbnet_stop,
+ .ndo_start_xmit = usbnet_start_xmit,
+ .ndo_tx_timeout = usbnet_tx_timeout,
+ .ndo_change_mtu = sierra_net_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+/* get private data associated with passed in usbnet device */
+static inline struct sierra_net_data *sierra_net_get_private(struct usbnet *dev)
+{
+ return (struct sierra_net_data *)dev->data[0];
+}
+
+/* set private data associated with passed in usbnet device */
+static inline void sierra_net_set_private(struct usbnet *dev,
+ struct sierra_net_data *priv)
+{
+ dev->data[0] = (unsigned long)priv;
+}
+
+/* is packet IP */
+static inline int is_ip(struct sk_buff *skb)
+{
+ return ((skb->protocol == cpu_to_be16(ETH_P_IP)) ||
+ (skb->protocol == cpu_to_be16(ETH_P_IPV6)));
+}
+
+/*
+ * check passed in packet and make sure that:
+ * - it is linear (no scatter/gather)
+ * - it is ethernet (mac_header properly set)
+ */
+static int check_ethip_packet(struct sk_buff *skb, struct usbnet *dev)
+{
+ skb_reset_mac_header(skb); /* ethernet header */
+
+ if (skb_is_nonlinear(skb)) {
+ netdev_err(dev->net, "Non linear buffer-dropping\n");
+ return 0;
+ }
+
+ if (!pskb_may_pull(skb, ETH_HLEN))
+ return 0;
+ skb->protocol = eth_hdr(skb)->h_proto;
+
+ return 1;
+}
+
+static const u8 *save16bit(struct param *p, const u8 *datap)
+{
+ p->is_present = 1;
+ p->word = get_unaligned_be16(datap);
+ return datap + sizeof(p->word);
+}
+
+static const u8 *save8bit(struct param *p, const u8 *datap)
+{
+ p->is_present = 1;
+ p->byte = *datap;
+ return datap + sizeof(p->byte);
+}
+
+/*----------------------------------------------------------------------------*
+ * BEGIN HIP *
+ *----------------------------------------------------------------------------*/
+/* HIP header */
+#define SIERRA_NET_HIP_HDR_LEN 4
+/* Extended HIP header */
+#define SIERRA_NET_HIP_EXT_HDR_LEN 6
+
+struct hip_hdr {
+ int hdrlen;
+ struct param payload_len;
+ struct param msgid;
+ struct param msgspecific;
+ struct param extmsgid;
+};
+
+static int parse_hip(const u8 *buf, const u32 buflen, struct hip_hdr *hh)
+{
+ const u8 *curp = buf;
+ int padded;
+
+ if (buflen < SIERRA_NET_HIP_HDR_LEN)
+ return -EPROTO;
+
+ curp = save16bit(&hh->payload_len, curp);
+ curp = save8bit(&hh->msgid, curp);
+ curp = save8bit(&hh->msgspecific, curp);
+
+ padded = hh->msgid.byte & 0x80;
+ hh->msgid.byte &= 0x7F; /* 7 bits */
+
+ hh->extmsgid.is_present = (hh->msgid.byte == SIERRA_NET_HIP_EXTENDEDID);
+ if (hh->extmsgid.is_present) {
+ if (buflen < SIERRA_NET_HIP_EXT_HDR_LEN)
+ return -EPROTO;
+
+ hh->payload_len.word &= 0x3FFF; /* 14 bits */
+
+ curp = save16bit(&hh->extmsgid, curp);
+ hh->extmsgid.word &= 0x03FF; /* 10 bits */
+
+ hh->hdrlen = SIERRA_NET_HIP_EXT_HDR_LEN;
+ } else {
+ hh->payload_len.word &= 0x07FF; /* 11 bits */
+ hh->hdrlen = SIERRA_NET_HIP_HDR_LEN;
+ }
+
+ if (padded) {
+ hh->hdrlen++;
+ hh->payload_len.word--;
+ }
+
+ /* if real packet shorter than the claimed length */
+ if (buflen < (hh->hdrlen + hh->payload_len.word))
+ return -EINVAL;
+
+ return 0;
+}
+
+static void build_hip(u8 *buf, const u16 payloadlen,
+ struct sierra_net_data *priv)
+{
+ /* the following doesn't have the full functionality. We
+ * currently build only one kind of header, so it is faster this way
+ */
+ put_unaligned_be16(payloadlen, buf);
+ memcpy(buf+2, priv->tx_hdr_template, sizeof(priv->tx_hdr_template));
+}
+/*----------------------------------------------------------------------------*
+ * END HIP *
+ *----------------------------------------------------------------------------*/
+/* This should come out before going to kernel.org */
+static void sierra_net_printk_buf(u8 *buf, u16 len)
+{
+#ifdef VERBOSE
+ u16 i;
+ u16 k;
+
+ for (i = k = 0; i < len / 4; i++, k += 4) {
+ printk(KERN_DEBUG "%02x%02x%02x%02x ",
+ buf[k+0], buf[k+1], buf[k+2], buf[k+3]);
+ }
+
+ for (; k < len; k++)
+ printk(KERN_DEBUG "%02x", buf[k]);
+
+ printk("\n");
+#endif
+}
+
+static int sierra_net_send_cmd(struct usbnet *dev,
+ u8 *cmd, int cmdlen, const char * cmd_name)
+{
+ struct sierra_net_data *priv = sierra_net_get_private(dev);
+ int status;
+
+ usb_autopm_get_interface(dev->intf);
+ status = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
+ USB_CDC_SEND_ENCAPSULATED_COMMAND,
+ USB_DIR_OUT|USB_TYPE_CLASS|USB_RECIP_INTERFACE, 0,
+ priv->ifnum, cmd, cmdlen, USB_CTRL_SET_TIMEOUT);
+ usb_autopm_put_interface(dev->intf);
+
+ if (status != cmdlen && status != -ENODEV)
+ netdev_err(dev->net, "Submit %s failed %d\n", cmd_name, status);
+
+ return status;
+}
+
+static int sierra_net_send_sync(struct usbnet *dev)
+{
+ int status;
+ struct sierra_net_data *priv = sierra_net_get_private(dev);
+
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+
+ status = sierra_net_send_cmd(dev, priv->sync_msg,
+ sizeof(priv->sync_msg), "SYNC");
+ return status;
+}
+
+static void sierra_net_send_shutdown(struct usbnet *dev)
+{
+ struct sierra_net_data *priv = sierra_net_get_private(dev);
+
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+
+ sierra_net_send_cmd(dev, priv->shdwn_msg,
+ sizeof(priv->shdwn_msg), "Shutdown");
+}
+
+static void sierra_net_set_ctx_index(struct sierra_net_data *priv, u8 ctx_ix)
+{
+ dev_dbg(&(priv->usbnet->udev->dev), "%s %d", __func__, ctx_ix);
+ priv->tx_hdr_template[0] = 0x3F;
+ priv->tx_hdr_template[1] = ctx_ix;
+ *((u16 *)&priv->tx_hdr_template[2]) =
+ cpu_to_be16(SIERRA_NET_HIP_EXT_IP_OUT_ID);
+}
+
+static inline int sierra_net_is_valid_addrlen(u8 len)
+{
+ return (len == sizeof(struct in_addr));
+}
+
+static int sierra_net_parse_lsi(struct usbnet *dev, char *data, int datalen)
+{
+ struct lsi_umts *lsi = (struct lsi_umts *)data;
+
+ if (datalen < sizeof(struct lsi_umts)) {
+ netdev_err(dev->net, "%s: Data length %d, exp %Zu\n",
+ __func__, datalen,
+ sizeof(struct lsi_umts));
+ return -1;
+ }
+
+ if (lsi->length != cpu_to_be16(SIERRA_NET_LSI_UMTS_STATUS_LEN)) {
+ netdev_err(dev->net, "%s: LSI_UMTS_STATUS_LEN %d, exp %u\n",
+ __func__, be16_to_cpu(lsi->length),
+ (u32)SIERRA_NET_LSI_UMTS_STATUS_LEN);
+ return -1;
+ }
+
+ /* Validate the protocol - only support UMTS for now */
+ if (lsi->protocol != SIERRA_NET_PROTOCOL_UMTS) {
+ netdev_err(dev->net, "Protocol unsupported, 0x%02x\n",
+ lsi->protocol);
+ return -1;
+ }
+
+ /* Validate the link type */
+ if ((lsi->link_type != SIERRA_NET_AS_LINK_TYPE_IPv4) &&
+ (lsi->link_type != SIERRA_NET_AS_LINK_TYPE_IPv6)) {
+ netdev_err(dev->net, "Link unavailable: 0x%02x",
+ lsi->link_type);
+ return 0;
+ }
+
+ /* Validate the coverage */
+ if (lsi->coverage == SIERRA_NET_COVERAGE_NONE
+ || lsi->coverage == SIERRA_NET_COVERAGE_NOPACKET) {
+ netdev_err(dev->net, "No coverage, 0x%02x\n", lsi->coverage);
+ return 0;
+ }
+
+ /* Validate the session state */
+ if (lsi->session_state == SIERRA_NET_SESSION_IDLE) {
+ netdev_err(dev->net, "Session idle, 0x%02x\n",
+ lsi->session_state);
+ return 0;
+ }
+
+ /* Set link_sense true */
+ return 1;
+}
+
+static void sierra_net_handle_lsi(struct usbnet *dev, char *data,
+ struct hip_hdr *hh)
+{
+ struct sierra_net_data *priv = sierra_net_get_private(dev);
+ int link_up;
+
+ link_up = sierra_net_parse_lsi(dev, data + hh->hdrlen,
+ hh->payload_len.word);
+ if (link_up < 0) {
+ netdev_err(dev->net, "Invalid LSI\n");
+ return;
+ }
+ if (link_up) {
+ sierra_net_set_ctx_index(priv, hh->msgspecific.byte);
+ priv->link_up = 1;
+ netif_carrier_on(dev->net);
+ } else {
+ priv->link_up = 0;
+ netif_carrier_off(dev->net);
+ }
+}
+
+static void sierra_net_dosync(struct usbnet *dev)
+{
+ int status;
+ struct sierra_net_data *priv = sierra_net_get_private(dev);
+
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+
+ /* tell modem we are ready */
+ status = sierra_net_send_sync(dev);
+ if (status < 0)
+ netdev_err(dev->net,
+ "Send SYNC failed, status %d\n", status);
+ status = sierra_net_send_sync(dev);
+ if (status < 0)
+ netdev_err(dev->net,
+ "Send SYNC failed, status %d\n", status);
+
+ /* Now, start a timer and make sure we get the Restart Indication */
+ priv->sync_timer.function = sierra_sync_timer;
+ priv->sync_timer.data = (unsigned long) dev;
+ priv->sync_timer.expires = jiffies + SIERRA_NET_SYNCDELAY;
+ add_timer(&priv->sync_timer);
+}
+
+static void sierra_net_kevent(struct work_struct *work)
+{
+ struct sierra_net_data *priv =
+ container_of(work, struct sierra_net_data, sierra_net_kevent);
+ struct usbnet *dev = priv->usbnet;
+ int len;
+ int err;
+ u8 *buf;
+ u8 ifnum;
+
+ if (test_bit(SIERRA_NET_EVENT_RESP_AVAIL, &priv->kevent_flags)) {
+ clear_bit(SIERRA_NET_EVENT_RESP_AVAIL, &priv->kevent_flags);
+
+ /* Query the modem for the LSI message */
+ buf = kzalloc(SIERRA_NET_USBCTL_BUF_LEN, GFP_KERNEL);
+ if (!buf) {
+ netdev_err(dev->net,
+ "failed to allocate buf for LS msg\n");
+ return;
+ }
+ ifnum = priv->ifnum;
+ usb_autopm_get_interface(dev->intf);
+ len = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
+ USB_CDC_GET_ENCAPSULATED_RESPONSE,
+ USB_DIR_IN|USB_TYPE_CLASS|USB_RECIP_INTERFACE,
+ 0, ifnum, buf, SIERRA_NET_USBCTL_BUF_LEN,
+ USB_CTRL_SET_TIMEOUT);
+ usb_autopm_put_interface(dev->intf);
+
+ if (unlikely(len < 0)) {
+ netdev_err(dev->net,
+ "usb_control_msg failed, status %d\n", len);
+ } else {
+ struct hip_hdr hh;
+
+ dev_dbg(&dev->udev->dev, "%s: Received status message,"
+ " %04x bytes", __func__, len);
+ sierra_net_printk_buf(buf, len);
+
+ err = parse_hip(buf, len, &hh);
+ if (err) {
+ netdev_err(dev->net, "%s: Bad packet,"
+ " parse result %d\n", __func__, err);
+ kfree(buf);
+ return;
+ }
+
+ /* Validate packet length */
+ if (len != hh.hdrlen + hh.payload_len.word) {
+ netdev_err(dev->net, "%s: Bad packet, received"
+ " %d, expected %d\n", __func__, len,
+ hh.hdrlen + hh.payload_len.word);
+ kfree(buf);
+ return;
+ }
+
+ /* Switch on received message types */
+ switch (hh.msgid.byte) {
+ case SIERRA_NET_HIP_LSI_UMTSID:
+ dev_dbg(&dev->udev->dev, "LSI for ctx:%d",
+ hh.msgspecific.byte);
+ sierra_net_handle_lsi(dev, buf, &hh);
+ break;
+ case SIERRA_NET_HIP_RESTART_ID:
+ dev_dbg(&dev->udev->dev, "Restart reported: %d,"
+ " stopping sync timer",
+ hh.msgspecific.byte);
+ /* Got sync resp - stop timer & clear mask */
+ del_timer_sync(&priv->sync_timer);
+ clear_bit(SIERRA_NET_TIMER_EXPIRY,
+ &priv->kevent_flags);
+ break;
+ case SIERRA_NET_HIP_HSYNC_ID:
+ dev_dbg(&dev->udev->dev, "SYNC received");
+ err = sierra_net_send_sync(dev);
+ if (err < 0)
+ netdev_err(dev->net,
+ "Send SYNC failed %d\n", err);
+ break;
+ case SIERRA_NET_HIP_EXTENDEDID:
+ netdev_err(dev->net, "Unrecognized HIP msg, "
+ "extmsgid 0x%04x\n", hh.extmsgid.word);
+ break;
+ case SIERRA_NET_HIP_RCGI:
+ /* Ignored. It is a firmware
+ * workaround to solve a Windows driver bug and
+ * may be removed in the future.
+ */
+ break;
+ default:
+ netdev_err(dev->net, "Unrecognized HIP msg, "
+ "msgid 0x%02x\n", hh.msgid.byte);
+ break;
+ }
+ }
+ kfree(buf);
+ }
+ /* The sync timer bit might be set */
+ if (test_bit(SIERRA_NET_TIMER_EXPIRY, &priv->kevent_flags)) {
+ clear_bit(SIERRA_NET_TIMER_EXPIRY, &priv->kevent_flags);
+ dev_dbg(&dev->udev->dev, "Deferred sync timer expiry");
+ sierra_net_dosync(priv->usbnet);
+ }
+
+ if (priv->kevent_flags)
+ dev_dbg(&dev->udev->dev, "sierra_net_kevent done, "
+ "kevent_flags = 0x%lx", priv->kevent_flags);
+}
+
+static void sierra_net_defer_kevent(struct usbnet *dev, int work)
+{
+ struct sierra_net_data *priv = sierra_net_get_private(dev);
+
+ set_bit(work, &priv->kevent_flags);
+ if (!schedule_work(&priv->sierra_net_kevent))
+ dev_dbg(&dev->udev->dev, "sierra_net_kevent %d may have been dropped", work);
+ else
+ dev_dbg(&dev->udev->dev, "sierra_net_kevent %d scheduled", work);
+}
+
+/*
+ * Sync Retransmit Timer Handler. On expiry, kick the work queue
+ */
+void sierra_sync_timer(unsigned long syncdata)
+{
+ struct usbnet *dev = (struct usbnet *)syncdata;
+
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+ /* Kick the tasklet */
+ sierra_net_defer_kevent(dev, SIERRA_NET_TIMER_EXPIRY);
+}
+
+static void sierra_net_status(struct usbnet *dev, struct urb *urb)
+{
+ struct usb_cdc_notification *event;
+
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+ sierra_net_printk_buf(urb->transfer_buffer, urb->actual_length);
+
+ if (urb->actual_length < sizeof *event)
+ return;
+
+ /* Add cases to handle other standard notifications. */
+ event = urb->transfer_buffer;
+ switch (event->bNotificationType) {
+ case USB_CDC_NOTIFY_NETWORK_CONNECTION:
+ case USB_CDC_NOTIFY_SPEED_CHANGE:
+ /* USB 305 sends those */
+ break;
+ case USB_CDC_NOTIFY_RESPONSE_AVAILABLE:
+ sierra_net_defer_kevent(dev, SIERRA_NET_EVENT_RESP_AVAIL);
+ break;
+ default:
+ netdev_err(dev->net, ": unexpected notification %02x!\n",
+ event->bNotificationType);
+ break;
+ }
+}
+
+static void sierra_net_get_drvinfo(struct net_device *net,
+ struct ethtool_drvinfo *info)
+{
+ /* Inherit standard device info */
+ usbnet_get_drvinfo(net, info);
+ strncpy(info->driver, driver_name, sizeof info->driver);
+ strncpy(info->version, DRIVER_VERSION, sizeof info->version);
+}
+
+static u32 sierra_net_get_link(struct net_device *net)
+{
+ struct usbnet *dev = netdev_priv(net);
+ /* Report link is down whenever the interface is down */
+ return sierra_net_get_private(dev)->link_up && netif_running(net);
+}
+
+static struct ethtool_ops sierra_net_ethtool_ops = {
+ .get_drvinfo = sierra_net_get_drvinfo,
+ .get_link = sierra_net_get_link,
+ .get_msglevel = usbnet_get_msglevel,
+ .set_msglevel = usbnet_set_msglevel,
+ .get_settings = usbnet_get_settings,
+ .set_settings = usbnet_set_settings,
+ .nway_reset = usbnet_nway_reset,
+};
+
+/* MTU can not be more than 1500 bytes, enforce it. */
+static int sierra_net_change_mtu(struct net_device *net, int new_mtu)
+{
+ if (new_mtu > SIERRA_NET_MAX_SUPPORTED_MTU)
+ return -EINVAL;
+
+ return usbnet_change_mtu(net, new_mtu);
+}
+
+static int is_whitelisted(const u8 ifnum,
+ const struct sierra_net_iface_info *whitelist)
+{
+ if (whitelist) {
+ const u8 *list = whitelist->ifaceinfo;
+ int i;
+
+ for (i = 0; i < whitelist->infolen; i++) {
+ if (list[i] == ifnum)
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int sierra_net_get_fw_attr(struct usbnet *dev, u16 *datap)
+{
+ int result = 0;
+ u16 *attrdata;
+
+ attrdata = kmalloc(sizeof(*attrdata), GFP_KERNEL);
+ if (!attrdata)
+ return -ENOMEM;
+
+ usb_autopm_get_interface(dev->intf);
+ result = usb_control_msg(
+ dev->udev,
+ usb_rcvctrlpipe(dev->udev, 0),
+ /* _u8 vendor specific request */
+ SWI_USB_REQUEST_GET_FW_ATTR,
+ USB_DIR_IN | USB_TYPE_VENDOR, /* __u8 request type */
+ 0x0000, /* __u16 value not used */
+ 0x0000, /* __u16 index not used */
+ attrdata, /* char *data */
+ sizeof(*attrdata), /* __u16 size */
+ USB_CTRL_SET_TIMEOUT); /* int timeout */
+ usb_autopm_put_interface(dev->intf);
+
+ if (result < 0) {
+ kfree(attrdata);
+ return -EIO;
+ }
+
+ *datap = *attrdata;
+
+ kfree(attrdata);
+ return result;
+}
+
+static int sierra_net_manage_power(struct usbnet *dev, int on)
+{
+ dev->intf->needs_remote_wakeup = on;
+ return 0;
+}
+
+/*
+ * collects the bulk endpoints, the status endpoint.
+ */
+static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+ u8 ifacenum;
+ u8 numendpoints;
+ u16 fwattr = 0;
+ int status;
+ struct ethhdr *eth;
+ struct sierra_net_data *priv;
+ static const u8 sync_tmplate[sizeof(priv->sync_msg)] = {
+ 0x00, 0x00, SIERRA_NET_HIP_MSYNC_ID, 0x00};
+ static const u8 shdwn_tmplate[sizeof(priv->shdwn_msg)] = {
+ 0x00, 0x00, SIERRA_NET_HIP_SHUTD_ID, 0x00};
+
+ struct sierra_net_info_data *data =
+ (struct sierra_net_info_data *)dev->driver_info->data;
+
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+
+ ifacenum = intf->cur_altsetting->desc.bInterfaceNumber;
+ /* We only accept certain interfaces */
+ if (!is_whitelisted(ifacenum, &data->whitelist)) {
+ dev_dbg(&dev->udev->dev, "Ignoring interface: %d", ifacenum);
+ return -ENODEV;
+ }
+ numendpoints = intf->cur_altsetting->desc.bNumEndpoints;
+ /* We have three endpoints, bulk in and out, and a status */
+ if (numendpoints != 3) {
+ dev_err(&dev->udev->dev, "Expected 3 endpoints, found: %d",
+ numendpoints);
+ return -ENODEV;
+ }
+ /* Status endpoint set in usbnet_get_endpoints() */
+ dev->status = NULL;
+ status = usbnet_get_endpoints(dev, intf);
+ if (status < 0) {
+ dev_err(&dev->udev->dev, "Error in usbnet_get_endpoints (%d)",
+ status);
+ return -ENODEV;
+ }
+ /* Initialize sierra private data */
+ priv = kzalloc(sizeof *priv, GFP_KERNEL);
+ if (!priv) {
+ dev_err(&dev->udev->dev, "No memory");
+ return -ENOMEM;
+ }
+
+ priv->usbnet = dev;
+ priv->ifnum = ifacenum;
+ /* override change_mtu with our own routine - need to bound check */
+ /* replace structure to our own structure where we have our own
+ * routine - need to bound check
+ */
+ dev->net->netdev_ops = &sierra_net_device_ops;
+
+ /* change MAC addr to include, ifacenum, and to be unique */
+ dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return(&iface_counter);
+ dev->net->dev_addr[ETH_ALEN-1] = ifacenum;
+
+ /* we will have to manufacture ethernet headers, prepare template */
+ eth = (struct ethhdr *)priv->ethr_hdr_tmpl;
+ memcpy(ð->h_dest, dev->net->dev_addr, ETH_ALEN);
+ eth->h_proto = cpu_to_be16(ETH_P_IP);
+
+ /* prepare shutdown message template */
+ memcpy(priv->shdwn_msg, shdwn_tmplate, sizeof(priv->shdwn_msg));
+ /* set context index initially to 0 - prepares tx hdr template */
+ sierra_net_set_ctx_index(priv, 0);
+
+ /* decrease the rx_urb_size and max_tx_size to 4k on USB 1.1 */
+ dev->rx_urb_size = data->rx_urb_size;
+ if (dev->udev->speed != USB_SPEED_HIGH)
+ dev->rx_urb_size = min_t(size_t, 4096, data->rx_urb_size);
+
+ dev->net->hard_header_len += SIERRA_NET_HIP_EXT_HDR_LEN;
+ dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
+
+ /* Set up the netdev */
+ dev->net->flags |= IFF_NOARP;
+ dev->net->flags |= IFF_MULTICAST;
+ dev->net->ethtool_ops = &sierra_net_ethtool_ops;
+ netif_carrier_off(dev->net);
+
+ sierra_net_set_private(dev, priv);
+
+ priv->kevent_flags = 0;
+
+ /* Use the shared workqueue */
+ INIT_WORK(&priv->sierra_net_kevent, sierra_net_kevent);
+
+ /* Only need to do this once */
+ init_timer(&priv->sync_timer);
+ /* verify fw attributes */
+ status = sierra_net_get_fw_attr(dev, &fwattr);
+ dev_dbg(&dev->udev->dev, "Fw attr: %x\n", fwattr);
+ if (status == sizeof(fwattr) && (fwattr & SWI_GET_FW_ATTR_APM)) {
+/*******************************************************************************
+ * If you want the default /sys/bus/usb/devices/.../.../power/level to be forced
+ * to auto, the following needs to be compiled in.
+ */
+#ifdef POWER_LEVEL_AUTO
+ /* make power level default be 'auto' */
+ dev_dbg(&dev->udev->dev, "Enabling APM");
+ usb_enable_autosuspend(dev->udev);
+#endif
+ } else {
+ dev_info(&intf->dev, "Disabling APM - not supported");
+ usb_disable_autosuspend(dev->udev);
+ }
+ /* test whether firmware supports DHCP */
+ if (!(status == sizeof(fwattr) && (fwattr & SWI_GET_FW_ATTR_MASK))) {
+ /* found incompatible firmware version */
+ dev_err(&dev->udev->dev, "Incompatible driver and firmware"
+ " versions\n");
+ kfree(priv);
+ return -ENODEV;
+ }
+ /* prepare sync message from template */
+ memcpy(priv->sync_msg, sync_tmplate, sizeof(priv->sync_msg));
+
+ return 0;
+}
+
+static void sierra_net_unbind(struct usbnet *dev, struct usb_interface *intf)
+{
+ struct sierra_net_data *priv = sierra_net_get_private(dev);
+
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+
+ sierra_net_set_private(dev, NULL);
+
+ kfree(priv);
+}
+
+static int sierra_net_open(struct usbnet *dev)
+{
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+
+ /* initiate the sync sequence */
+ sierra_net_dosync(dev);
+
+ return 0;
+}
+
+static int sierra_net_stop(struct usbnet *dev)
+{
+ struct sierra_net_data *priv = sierra_net_get_private(dev);
+
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+
+ /* Kill the timer then flush the work queue */
+ del_timer_sync(&priv->sync_timer);
+
+ cancel_work_sync(&priv->sierra_net_kevent);
+
+ /* tell modem we are going away */
+ sierra_net_send_shutdown(dev);
+
+ return 0;
+}
+
+static struct sk_buff *sierra_net_skb_clone(struct usbnet *dev,
+ struct sk_buff *skb, int len)
+{
+ struct sk_buff *new_skb;
+
+ /* clone skb */
+ new_skb = skb_clone(skb, GFP_ATOMIC);
+
+ /* remove len bytes from original */
+ skb_pull(skb, len);
+
+ /* trim next packet to it's length */
+ if (new_skb) {
+ skb_trim(new_skb, len);
+ } else {
+ if (netif_msg_rx_err(dev))
+ netdev_err(dev->net, "failed to get skb\n");
+ dev->net->stats.rx_dropped++;
+ }
+
+ return new_skb;
+}
+
+/* ---------------------------- Receive data path ----------------------*/
+static int sierra_net_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
+{
+ int err;
+ struct hip_hdr hh;
+ struct sk_buff *new_skb;
+ struct ethhdr *eth;
+ struct iphdr *ip;
+
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+
+ sierra_net_printk_buf(skb->data, skb->len);
+
+ /* could contain multiple packets */
+ while (likely(skb->len)) {
+ err = parse_hip(skb->data, skb->len, &hh);
+ if (err) {
+ if (netif_msg_rx_err(dev))
+ netdev_err(dev->net, "Invalid HIP header %d\n",
+ err);
+ /* dev->net->stats.rx_errors incremented by caller */
+ dev->net->stats.rx_length_errors++;
+ return 0;
+ }
+
+ /* Validate Extended HIP header */
+ if (!hh.extmsgid.is_present
+ || hh.extmsgid.word != SIERRA_NET_HIP_EXT_IP_IN_ID) {
+ if (netif_msg_rx_err(dev))
+ netdev_err(dev->net, "HIP/ETH: Invalid pkt\n");
+
+ dev->net->stats.rx_frame_errors++;
+ /* dev->net->stats.rx_errors incremented by caller */;
+ return 0;
+ }
+
+ skb_pull(skb, hh.hdrlen);
+
+ /* We are going to accept this packet, prepare it */
+ memcpy(skb->data, sierra_net_get_private(dev)->ethr_hdr_tmpl,
+ ETH_HLEN);
+
+ ip = (struct iphdr *)((char *)skb->data + ETH_HLEN);
+ if(ip->version == 6) {
+ eth = (struct ethhdr *)skb->data;
+ eth->h_proto = cpu_to_be16(ETH_P_IPV6);
+ }
+
+ /* Last packet in batch handled by usbnet */
+ if (hh.payload_len.word == skb->len)
+ return 1;
+
+ new_skb = sierra_net_skb_clone(dev, skb, hh.payload_len.word);
+ if (new_skb)
+ usbnet_skb_return(dev, new_skb);
+
+ } /* while */
+
+ return 0;
+}
+
+/* ---------------------------- Transmit data path ----------------------*/
+struct sk_buff *sierra_net_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
+ gfp_t flags)
+{
+ struct sierra_net_data *priv = sierra_net_get_private(dev);
+ u16 len;
+ bool need_tail;
+
+ dev_dbg(&dev->udev->dev, "%s", __func__);
+ if (priv->link_up && check_ethip_packet(skb, dev) && is_ip(skb)) {
+ /* enough head room as is? */
+ if (SIERRA_NET_HIP_EXT_HDR_LEN <= skb_headroom(skb)) {
+ /* Save the Eth/IP length and set up HIP hdr */
+ len = skb->len;
+ skb_push(skb, SIERRA_NET_HIP_EXT_HDR_LEN);
+ /* Handle ZLP issue */
+ need_tail = ((len + SIERRA_NET_HIP_EXT_HDR_LEN)
+ % dev->maxpacket == 0);
+ if (need_tail) {
+ if (unlikely(skb_tailroom(skb) == 0)) {
+ netdev_err(dev->net, "tx_fixup:"
+ "no room for packet\n");
+ dev_kfree_skb_any(skb);
+ return NULL;
+ } else {
+ skb->data[skb->len] = 0;
+ __skb_put(skb, 1);
+ len = len + 1;
+ }
+ }
+ build_hip(skb->data, len, priv);
+
+ sierra_net_printk_buf(skb->data, skb->len);
+ return skb;
+ } else {
+ /*
+ * compensate in the future if necessary
+ */
+ netdev_err(dev->net, "tx_fixup: no room for HIP\n");
+ } /* headroom */
+ }
+
+ if (!priv->link_up)
+ dev->net->stats.tx_carrier_errors++;
+
+ /* tx_dropped incremented by usbnet */
+
+ /* filter the packet out, release it */
+ dev_kfree_skb_any(skb);
+ return NULL;
+}
+
+static int sierra_net_reset_resume(struct usb_interface *intf)
+{
+ struct usbnet *dev = usb_get_intfdata(intf);
+ netdev_err(dev->net, "%s\n", __func__);
+ return usbnet_resume(intf);
+}
+
+static const u8 sierra_net_ifnum_list[] = { 7, 10, 11 };
+static const struct sierra_net_info_data sierra_net_info_data_direct_ip = {
+ /* .rx_urb_size = 8 * 1024, */
+ .rx_urb_size = SIERRA_NET_RX_URB_SZ,
+ .whitelist = {
+ .infolen = ARRAY_SIZE(sierra_net_ifnum_list),
+ .ifaceinfo = sierra_net_ifnum_list
+ }
+};
+
+static const struct driver_info sierra_net_info_direct_ip = {
+ .description = "Sierra Wireless USB-to-WWAN Modem",
+ .flags = FLAG_WWAN | FLAG_SEND_ZLP,
+ .bind = sierra_net_bind,
+ .unbind = sierra_net_unbind,
+ .status = sierra_net_status,
+ .rx_fixup = sierra_net_rx_fixup,
+ .tx_fixup = sierra_net_tx_fixup,
+ .manage_power = sierra_net_manage_power,
+ .stop = sierra_net_stop,
+ .check_connect = sierra_net_open,
+ .data = (unsigned long)&sierra_net_info_data_direct_ip,
+};
+
+static const struct usb_device_id products[] = {
+ {USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modem */
+ .driver_info = (unsigned long) &sierra_net_info_direct_ip},
+ {USB_DEVICE(0xF3D, 0x68A3), /* AT&T Direct IP modem */
+ .driver_info = (unsigned long) &sierra_net_info_direct_ip},
+ {USB_DEVICE(0x1199, 0x68AA), /* Sierra Wireless Direct IP LTE modem */
+ .driver_info = (unsigned long) &sierra_net_info_direct_ip},
+ {USB_DEVICE(0xF3D, 0x68AA), /* AT&T Direct IP LTE modem */
+ .driver_info = (unsigned long) &sierra_net_info_direct_ip},
+
+ {}, /* last item */
+};
+MODULE_DEVICE_TABLE(usb, products);
+
+/* We are based on usbnet, so let it handle the USB driver specifics */
+static struct usb_driver sierra_net_driver = {
+ .name = "sierra_net",
+ .id_table = products,
+ .probe = usbnet_probe,
+ .disconnect = usbnet_disconnect,
+ .suspend = usbnet_suspend,
+ .resume = usbnet_resume,
+ .reset_resume = sierra_net_reset_resume,
+ .no_dynamic_id = 1,
+ .supports_autosuspend = 1,
+};
+
+static int __init sierra_net_init(void)
+{
+ BUILD_BUG_ON(FIELD_SIZEOF(struct usbnet, data)
+ < sizeof(struct cdc_state));
+
+ return usb_register(&sierra_net_driver);
+}
+
+static void __exit sierra_net_exit(void)
+{
+ usb_deregister(&sierra_net_driver);
+}
+
+module_exit(sierra_net_exit);
+module_init(sierra_net_init);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_VERSION(DRIVER_VERSION);
+MODULE_LICENSE("GPL");
projects / openwrt.git / commitdiff