| /* |
| USB Driver for Sierra Wireless |
| |
| Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>, |
| |
| Copyright (C) 2008, 2009 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 */ |
| #define DRIVER_VERSION "v.1.7.16" |
| #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> |
| |
| #define SWIMS_USB_REQUEST_SetPower 0x00 |
| #define SWIMS_USB_REQUEST_SetNmea 0x07 |
| |
| #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 */ |
| |
| static int debug; |
| static int nmea; |
| |
| /* 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 */ |
| }; |
| |
| struct sierra_intf_private { |
| spinlock_t susp_lock; |
| unsigned int suspended:1; |
| int in_flight; |
| }; |
| |
| 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_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; |
| dev_dbg(&serial->dev->dev, "%s\n", __func__); |
| |
| /* 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 *data; |
| 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 1 for the MC8785 */ |
| 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; |
| } |
| |
| data = serial->private = kzalloc(sizeof(struct sierra_intf_private), GFP_KERNEL); |
| if (!data) |
| return -ENOMEM; |
| spin_lock_init(&data->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, 0x211D) }, /* HP ev2210 a.k.a MC5725 */ |
| { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */ |
| |
| { 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 */ |
| /* 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(0x1199, 0x0029) }, /* Sierra Wireless Device */ |
| |
| { 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 */ |
| { USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */ |
| .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist |
| }, |
| { USB_DEVICE(0x0f3d, 0x68A3), /* Airprime/Sierra Wireless Direct IP modems */ |
| .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist |
| }, |
| { USB_DEVICE(0x413C, 0x08133) }, /* Dell Computer Corp. Wireless 5720 VZW Mobile Broadband (EVDO Rev-A) Minicard GPS Port */ |
| |
| { } |
| }; |
| MODULE_DEVICE_TABLE(usb, id_table); |
| |
| |
| 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; |
| __u16 interface = 0; |
| int val = 0; |
| int do_send = 0; |
| int retval; |
| |
| dev_dbg(&port->dev, "%s\n", __func__); |
| |
| portdata = usb_get_serial_port_data(port); |
| |
| 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; |
| |
| retval = usb_autopm_get_interface(serial->interface); |
| if (retval < 0) |
| return retval; |
| |
| 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); |
| kfree(urb->transfer_buffer); |
| usb_free_urb(urb); |
| } |
| } |
| |
| 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; |
| |
| /* free up the transfer buffer, as usb_free_urb() does not do this */ |
| kfree(urb->transfer_buffer); |
| usb_autopm_put_interface_async(port->serial->interface); |
| if (status) |
| dev_dbg(&port->dev, "%s - nonzero write bulk status " |
| "received: %d\n", __func__, status); |
| |
| 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; |
| 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; |
| |
| portdata = usb_get_serial_port_data(port); |
| intfdata = serial->private; |
| |
| dev_dbg(&port->dev, "%s: write (%zd bytes)\n", __func__, writesize); |
| spin_lock_irqsave(&portdata->lock, flags); |
| dev_dbg(&port->dev, "%s - outstanding_urbs: %d\n", __func__, |
| portdata->outstanding_urbs); |
| 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++; |
| dev_dbg(&port->dev, "%s - 1, outstanding_urbs: %d\n", __func__, |
| portdata->outstanding_urbs); |
| spin_unlock_irqrestore(&portdata->lock, flags); |
| |
| retval = usb_autopm_get_interface_async(serial->interface); |
| if (retval < 0) { |
| spin_lock_irqsave(&portdata->lock, flags); |
| portdata->outstanding_urbs--; |
| spin_unlock_irqrestore(&portdata->lock, flags); |
| goto error_simple; |
| } |
| |
| buffer = kmalloc(writesize, GFP_ATOMIC); |
| if (!buffer) { |
| dev_err(&port->dev, "out of memory\n"); |
| retval = -ENOMEM; |
| goto error_no_buffer; |
| } |
| |
| urb = usb_alloc_urb(0, GFP_ATOMIC); |
| if (!urb) { |
| dev_err(&port->dev, "no more free urbs\n"); |
| retval = -ENOMEM; |
| goto error_no_urb; |
| } |
| |
| 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 */ |
| urb->transfer_flags |= URB_ZERO_PACKET; |
| |
| spin_lock_irqsave(&intfdata->susp_lock, flags); |
| |
| if (intfdata->suspended) { |
| usb_anchor_urb(urb, &portdata->delayed); |
| spin_unlock_irqrestore(&intfdata->susp_lock, flags); |
| goto skip_power; |
| } else { |
| 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); |
| goto error; |
| } else { |
| intfdata->in_flight++; |
| spin_unlock_irqrestore(&intfdata->susp_lock, flags); |
| } |
| |
| skip_power: |
| /* we are done with this urb, so let the host driver |
| * really free it when it is finished with it */ |
| usb_free_urb(urb); |
| |
| return writesize; |
| error: |
| usb_free_urb(urb); |
| error_no_urb: |
| kfree(buffer); |
| error_no_buffer: |
| spin_lock_irqsave(&portdata->lock, flags); |
| --portdata->outstanding_urbs; |
| dev_dbg(&port->dev, "%s - 2. outstanding_urbs: %d\n", __func__, |
| portdata->outstanding_urbs); |
| spin_unlock_irqrestore(&portdata->lock, flags); |
| usb_autopm_put_interface_async(serial->interface); |
| error_simple: |
| return retval; |
| } |
| |
| static void sierra_indat_callback(struct urb *urb) |
| { |
| int err; |
| int endpoint; |
| struct usb_serial_port *port; |
| struct tty_struct *tty; |
| unsigned char *data = urb->transfer_buffer; |
| int status = urb->status; |
| |
| endpoint = usb_pipeendpoint(urb->pipe); |
| port = urb->context; |
| |
| dev_dbg(&port->dev, "%s: %p\n", __func__, urb); |
| |
| if (status) { |
| dev_dbg(&port->dev, "%s: nonzero status: %d on" |
| " endpoint %02x\n", __func__, status, endpoint); |
| } 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); |
| 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 != -EPERM) { |
| usb_mark_last_busy(port->serial->dev); |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| if (err && err != -EPERM) |
| dev_err(&port->dev, "resubmit read urb failed." |
| "(%d)\n", err); |
| } |
| } |
| |
| 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: urb %p port %p has data %p\n", __func__, |
| urb, port, portdata); |
| |
| if (status == 0) { |
| struct usb_ctrlrequest *req_pkt = |
| (struct usb_ctrlrequest *)urb->transfer_buffer; |
| |
| if (!req_pkt) { |
| dev_dbg(&port->dev, "%s: NULL req_pkt\n", |
| __func__); |
| return; |
| } |
| if ((req_pkt->bRequestType == 0xA1) && |
| (req_pkt->bRequest == 0x20)) { |
| int old_dcd_state; |
| unsigned char signals = *((unsigned char *) |
| urb->transfer_buffer + |
| sizeof(struct usb_ctrlrequest)); |
| struct tty_struct *tty; |
| |
| dev_dbg(&port->dev, "%s: signal x%x\n", __func__, |
| signals); |
| |
| old_dcd_state = portdata->dcd_state; |
| portdata->cts_state = 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 { |
| dev_dbg(&port->dev, "%s: type %x req %x\n", |
| __func__, req_pkt->bRequestType, |
| req_pkt->bRequest); |
| } |
| } else |
| dev_dbg(&port->dev, "%s: error %d\n", __func__, status); |
| |
| /* Resubmit urb so we continue receiving IRQ data */ |
| if (status != -ESHUTDOWN && status != -ENOENT) { |
| usb_mark_last_busy(serial->dev); |
| urb->dev = serial->dev; |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| if (err && err != -EPERM) |
| 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; |
| |
| 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 */ |
| spin_lock_irqsave(&portdata->lock, flags); |
| if (portdata->outstanding_urbs > (portdata->num_out_urbs * 2) / 3) { |
| spin_unlock_irqrestore(&portdata->lock, flags); |
| dev_dbg(&port->dev, "%s - write limit hit\n", __func__); |
| return 0; |
| } |
| spin_unlock_irqrestore(&portdata->lock, flags); |
| |
| return 2048; |
| } |
| |
| 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; |
| 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 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; |
| |
| if (serial->dev) { |
| mutex_lock(&serial->disc_mutex); |
| if (!serial->disconnected) { |
| serial->interface->needs_remote_wakeup = 0; |
| /* odd error handling due to pm counters */ |
| if (!usb_autopm_get_interface(serial->interface)) |
| sierra_send_setup(port); |
| else |
| usb_autopm_get_interface_no_resume(serial->interface); |
| |
| } |
| 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; |
| } |
| } |
| } |
| |
| 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); |
| |
| err = sierra_submit_rx_urbs(port, GFP_KERNEL); |
| if (err) { |
| /* get rid of everything as in close */ |
| sierra_close(port); |
| /* restore balance for autopm */ |
| if (!serial->disconnected) |
| usb_autopm_put_interface(serial->interface); |
| return err; |
| } |
| sierra_send_setup(port); |
| |
| serial->interface->needs_remote_wakeup = 1; |
| 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; |
| struct sierra_port_private *portdata; |
| struct sierra_iface_info *himemoryp = NULL; |
| int i; |
| u8 ifnum; |
| |
| 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); |
| |
| /* Now setup per port private data */ |
| for (i = 0; i < serial->num_ports; i++) { |
| port = serial->port[i]; |
| portdata = kzalloc(sizeof(*portdata), GFP_KERNEL); |
| if (!portdata) { |
| dev_dbg(&port->dev, "%s: kmalloc for " |
| "sierra_port_private (%d) failed!\n", |
| __func__, i); |
| return -ENOMEM; |
| } |
| spin_lock_init(&portdata->lock); |
| init_usb_anchor(&portdata->active); |
| init_usb_anchor(&portdata->delayed); |
| 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); |
| } |
| |
| return 0; |
| } |
| |
| static void sierra_release(struct usb_serial *serial) |
| { |
| int i; |
| struct usb_serial_port *port; |
| struct sierra_port_private *portdata; |
| |
| dev_dbg(&serial->dev->dev, "%s\n", __func__); |
| |
| for (i = 0; i < serial->num_ports; ++i) { |
| port = serial->port[i]; |
| if (!port) |
| continue; |
| portdata = usb_get_serial_port_data(port); |
| if (!portdata) |
| continue; |
| kfree(portdata); |
| } |
| } |
| |
| #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; |
| int b; |
| |
| if (message.event & PM_EVENT_AUTO) { |
| intfdata = serial->private; |
| spin_lock_irq(&intfdata->susp_lock); |
| b = intfdata->in_flight; |
| |
| if (b) { |
| spin_unlock_irq(&intfdata->susp_lock); |
| return -EBUSY; |
| } else { |
| 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; |
| |
| 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); |
| |
| while ((urb = usb_get_from_anchor(&portdata->delayed))) { |
| usb_anchor_urb(urb, &portdata->active); |
| intfdata->in_flight++; |
| err = usb_submit_urb(urb, GFP_ATOMIC); |
| if (err < 0) { |
| intfdata->in_flight--; |
| usb_unanchor_urb(urb); |
| usb_scuttle_anchored_urbs(&portdata->delayed); |
| break; |
| } |
| } |
| |
| if (portdata->opened) { |
| err = sierra_submit_rx_urbs(port, GFP_ATOMIC); |
| if (err) |
| ec++; |
| } |
| } |
| intfdata->suspended = 0; |
| spin_unlock_irq(&intfdata->susp_lock); |
| |
| return ec ? -EIO : 0; |
| } |
| |
| 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); |
| } |
| #else |
| #define sierra_suspend NULL |
| #define sierra_resume NULL |
| #define sierra_reset_resume NULL |
| #endif |
| |
| 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, |
| .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"); |
