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linux/drivers/usb/serial/sierra.c
Elina Pasheva 4db2299da2 sierra: driver interface blacklisting 
Interface blacklisting is necessary for non-serial interfaces that are handled
by a different driver. The interface blacklisting is implemented in sierra
driver per device. Each device in need of a blacklist has a static information
array kept in the driver. This array contains the interface numbers that are
blacklisted. The pointer for each blacklist array and the length
of that blacklist are 'bundled' in data structure sierra_iface_info. A pointer
to this information is set in id_table when the device is added to the id_table.

The following is summary of changes we have made to sierra.c driver in
this patch dealing with interface blacklisting support:
- Added data structure sierra_iface_info and function is_blacklisted()
to support blacklisting
- Modified sierra_probe() to handle blacklisted interfaces accordingly
- Improved comments in id_table
- Added new device in id_table with blacklist interface support

Signed-off-by: Elina Pasheva <epasheva@sierrawireless.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-11 08:51:07 -07:00

898 lines
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/*
USB Driver for Sierra Wireless
Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@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>
*/
#define DRIVER_VERSION "v.1.3.3"
#define DRIVER_AUTHOR "Kevin Lloyd <klloyd@sierrawireless.com>"
#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/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 4
#define N_OUT_URB 4
#define IN_BUFLEN 4096
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 */
};
static int sierra_set_power_state(struct usb_device *udev, __u16 swiState)
{
int result;
dev_dbg(&udev->dev, "%s", __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", __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 result;
int *num_ports = usb_get_serial_data(serial);
dev_dbg(&serial->dev->dev, "%s", __func__);
result = *num_ports;
if (result) {
kfree(num_ports);
usb_set_serial_data(serial, NULL);
}
return result;
}
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 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", __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;
int *num_ports;
u8 ifnum;
u8 numendpoints;
dev_dbg(&serial->dev->dev, "%s", __func__);
num_ports = kmalloc(sizeof(*num_ports), GFP_KERNEL);
if (!num_ports)
return -ENOMEM;
ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber;
numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints;
udev = serial->dev;
/* Figure out the interface number from the serial structure */
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);
}
/* 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;
/*
* save off our num_ports info so that we can use it in the
* calc_num_ports callback
*/
usb_set_serial_data(serial, (void *)num_ports);
/* 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;
}
return result;
}
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 struct usb_device_id id_table [] = {
{ USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */
{ USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */
{ USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */
{ USB_DEVICE(0x03f0, 0x1b1d) }, /* HP ev2200 a.k.a MC5720 */
{ USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */
{ USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */
{ USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */
{ USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */
{ USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */
{ USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */
/* Sierra Wireless C597 */
{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) },
/* Sierra Wireless Device */
{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) },
{ USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless Device */
{ USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless Device */
{ USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless Device */
{ USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */
{ USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */
{ USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */
{ USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */
{ USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 (Lenovo) */
{ USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */
{ USB_DEVICE(0x03f0, 0x1e1d) }, /* HP hs2300 a.k.a MC8775 */
{ USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */
{ USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */
{ USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */
{ USB_DEVICE(0x1199, 0x6833) }, /* 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 Device */
{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)},
/* Sierra Wireless Device */
{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)},
/* Sierra Wireless Device */
{ USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)},
{ USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */
{ USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */
{ USB_DEVICE(0x1199, 0x68A3), /* Sierra Wireless Direct IP modems */
.driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist
},
{ }
};
MODULE_DEVICE_TABLE(usb, id_table);
static struct usb_driver sierra_driver = {
.name = "sierra",
.probe = usb_serial_probe,
.disconnect = usb_serial_disconnect,
.id_table = id_table,
.no_dynamic_id = 1,
};
struct sierra_port_private {
spinlock_t lock; /* lock the structure */
int outstanding_urbs; /* number of out urbs in flight */
/* Input endpoints and buffers for this port */
struct urb *in_urbs[N_IN_URB];
/* 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;
};
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;
dev_dbg(&port->dev, "%s", __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 */
return usb_control_msg(serial->dev,
usb_rcvctrlpipe(serial->dev, 0),
0x22, 0x21, val, interface,
NULL, 0, USB_CTRL_SET_TIMEOUT);
}
}
/* 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;
return usb_control_msg(serial->dev,
usb_rcvctrlpipe(serial->dev, 0),
0x22, 0x21, val, interface,
NULL, 0, USB_CTRL_SET_TIMEOUT);
}
return 0;
}
static void sierra_set_termios(struct tty_struct *tty,
struct usb_serial_port *port, struct ktermios *old_termios)
{
dev_dbg(&port->dev, "%s", __func__);
tty_termios_copy_hw(tty->termios, old_termios);
sierra_send_setup(port);
}
static int sierra_tiocmget(struct tty_struct *tty, struct file *file)
{
struct usb_serial_port *port = tty->driver_data;
unsigned int value;
struct sierra_port_private *portdata;
dev_dbg(&port->dev, "%s", __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, struct file *file,
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);
int status = urb->status;
unsigned long flags;
dev_dbg(&port->dev, "%s - port %d", __func__, port->number);
/* free up the transfer buffer, as usb_free_urb() does not do this */
kfree(urb->transfer_buffer);
if (status)
dev_dbg(&port->dev, "%s - nonzero write bulk status "
"received: %d", __func__, status);
spin_lock_irqsave(&portdata->lock, flags);
--portdata->outstanding_urbs;
spin_unlock_irqrestore(&portdata->lock, flags);
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 usb_serial *serial = port->serial;
unsigned long flags;
unsigned char *buffer;
struct urb *urb;
int status;
portdata = usb_get_serial_port_data(port);
dev_dbg(&port->dev, "%s: write (%d chars)", __func__, count);
spin_lock_irqsave(&portdata->lock, flags);
if (portdata->outstanding_urbs > N_OUT_URB) {
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);
buffer = kmalloc(count, GFP_ATOMIC);
if (!buffer) {
dev_err(&port->dev, "out of memory\n");
count = -ENOMEM;
goto error_no_buffer;
}
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb) {
dev_err(&port->dev, "no more free urbs\n");
count = -ENOMEM;
goto error_no_urb;
}
memcpy(buffer, buf, count);
usb_serial_debug_data(debug, &port->dev, __func__, count, buffer);
usb_fill_bulk_urb(urb, serial->dev,
usb_sndbulkpipe(serial->dev,
port->bulk_out_endpointAddress),
buffer, count, sierra_outdat_callback, port);
/* send it down the pipe */
status = usb_submit_urb(urb, GFP_ATOMIC);
if (status) {
dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed "
"with status = %d\n", __func__, status);
count = status;
goto error;
}
/* 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 count;
error:
usb_free_urb(urb);
error_no_urb:
kfree(buffer);
error_no_buffer:
spin_lock_irqsave(&portdata->lock, flags);
--portdata->outstanding_urbs;
spin_unlock_irqrestore(&portdata->lock, flags);
return count;
}
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;
dbg("%s: %p", __func__, urb);
endpoint = usb_pipeendpoint(urb->pipe);
port = urb->context;
if (status) {
dev_dbg(&port->dev, "%s: nonzero status: %d on"
" endpoint %02x.", __func__, status, endpoint);
} else {
if (urb->actual_length) {
tty = tty_port_tty_get(&port->port);
tty_buffer_request_room(tty, urb->actual_length);
tty_insert_flip_string(tty, data, urb->actual_length);
tty_flip_buffer_push(tty);
tty_kref_put(tty);
} else
dev_dbg(&port->dev, "%s: empty read urb"
" received", __func__);
/* Resubmit urb so we continue receiving */
if (port->port.count && status != -ESHUTDOWN && status != -EPERM) {
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err)
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", __func__);
dev_dbg(&port->dev, "%s: urb %p port %p has data %p", __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", __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",
__func__, req_pkt->bRequestType,
req_pkt->bRequest);
}
} else
dev_dbg(&port->dev, "%s: error %d", __func__, status);
/* Resubmit urb so we continue receiving IRQ data */
if (status != -ESHUTDOWN) {
urb->dev = serial->dev;
err = usb_submit_urb(urb, GFP_ATOMIC);
if (err)
dev_dbg(&port->dev, "%s: resubmit intr urb "
"failed. (%d)", __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", __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 > N_OUT_URB * 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 < ARRAY_SIZE(portdata->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 < ARRAY_SIZE(portdata->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;
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)
sierra_send_setup(port);
mutex_unlock(&serial->disc_mutex);
/* Stop reading urbs */
sierra_stop_rx_urbs(port);
/* .. and release them */
for (i = 0; i < N_IN_URB; 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 file *filp)
{
struct sierra_port_private *portdata;
struct usb_serial *serial = port->serial;
int i;
int err;
int endpoint;
struct urb *urb;
portdata = usb_get_serial_port_data(port);
dev_dbg(&port->dev, "%s", __func__);
/* Set some sane defaults */
portdata->rts_state = 1;
portdata->dtr_state = 1;
endpoint = port->bulk_in_endpointAddress;
for (i = 0; i < ARRAY_SIZE(portdata->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);
return err;
}
sierra_send_setup(port);
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;
int i;
dev_dbg(&serial->dev->dev, "%s", __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!.",
__func__, i);
return -ENOMEM;
}
spin_lock_init(&portdata->lock);
/* Set the port private data pointer */
usb_set_serial_port_data(port, portdata);
}
return 0;
}
static void sierra_shutdown(struct usb_serial *serial)
{
int i;
struct usb_serial_port *port;
struct sierra_port_private *portdata;
dev_dbg(&serial->dev->dev, "%s", __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);
usb_set_serial_port_data(port, NULL);
}
}
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,
.shutdown = sierra_shutdown,
.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");
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