openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity
linux/drivers/usb/atm/speedtch.c

848 lines
23 KiB
C
Raw Blame History

/******************************************************************************
* speedtch.c - Alcatel SpeedTouch USB xDSL modem driver
*
* Copyright (C) 2001, Alcatel
* Copyright (C) 2003, Duncan Sands
* Copyright (C) 2004, David Woodhouse
*
* 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.
*
******************************************************************************/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/gfp.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/errno.h>
#include <linux/proc_fs.h>
#include <linux/slab.h>
#include <linux/wait.h>
#include <linux/list.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/atm.h>
#include <linux/atmdev.h>
#include <linux/crc32.h>
#include <linux/init.h>
#include <linux/firmware.h>
#include "usb_atm.h"
#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
# define USE_FW_LOADER
#endif
#define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <duncan.sands@free.fr>"
#define DRIVER_VERSION "1.8"
#define DRIVER_DESC "Alcatel SpeedTouch USB driver version " DRIVER_VERSION
static const char speedtch_driver_name[] = "speedtch";
#define SPEEDTOUCH_VENDORID 0x06b9
#define SPEEDTOUCH_PRODUCTID 0x4061
/* Timeout in jiffies */
#define CTRL_TIMEOUT 2000
#define DATA_TIMEOUT 2000
#define OFFSET_7 0 /* size 1 */
#define OFFSET_b 1 /* size 8 */
#define OFFSET_d 9 /* size 4 */
#define OFFSET_e 13 /* size 1 */
#define OFFSET_f 14 /* size 1 */
#define TOTAL 15
#define SIZE_7 1
#define SIZE_b 8
#define SIZE_d 4
#define SIZE_e 1
#define SIZE_f 1
static int dl_512_first = 0;
static int sw_buffering = 0;
module_param(dl_512_first, bool, 0444);
MODULE_PARM_DESC(dl_512_first, "Read 512 bytes before sending firmware");
module_param(sw_buffering, uint, 0444);
MODULE_PARM_DESC(sw_buffering, "Enable software buffering");
#define UDSL_IOCTL_LINE_UP 1
#define UDSL_IOCTL_LINE_DOWN 2
#define SPEEDTCH_ENDPOINT_INT 0x81
#define SPEEDTCH_ENDPOINT_DATA 0x07
#define SPEEDTCH_ENDPOINT_FIRMWARE 0x05
#define hex2int(c) ( (c >= '0') && (c <= '9') ? (c - '0') : ((c & 0xf) + 9) )
static struct usb_device_id speedtch_usb_ids[] = {
{USB_DEVICE(SPEEDTOUCH_VENDORID, SPEEDTOUCH_PRODUCTID)},
{}
};
MODULE_DEVICE_TABLE(usb, speedtch_usb_ids);
struct speedtch_instance_data {
struct udsl_instance_data u;
/* Status */
struct urb *int_urb;
unsigned char int_data[16];
struct work_struct poll_work;
struct timer_list poll_timer;
};
/* USB */
static int speedtch_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id);
static void speedtch_usb_disconnect(struct usb_interface *intf);
static int speedtch_usb_ioctl(struct usb_interface *intf, unsigned int code,
void *user_data);
static void speedtch_handle_int(struct urb *urb, struct pt_regs *regs);
static void speedtch_poll_status(struct speedtch_instance_data *instance);
static struct usb_driver speedtch_usb_driver = {
.owner = THIS_MODULE,
.name = speedtch_driver_name,
.probe = speedtch_usb_probe,
.disconnect = speedtch_usb_disconnect,
.ioctl = speedtch_usb_ioctl,
.id_table = speedtch_usb_ids,
};
/***************
** firmware **
***************/
static void speedtch_got_firmware(struct speedtch_instance_data *instance,
int got_it)
{
int err;
struct usb_interface *intf;
down(&instance->u.serialize); /* vs self, speedtch_firmware_start */
if (instance->u.status == UDSL_LOADED_FIRMWARE)
goto out;
if (!got_it) {
instance->u.status = UDSL_NO_FIRMWARE;
goto out;
}
if ((err = usb_set_interface(instance->u.usb_dev, 1, 1)) < 0) {
dbg("speedtch_got_firmware: usb_set_interface returned %d!", err);
instance->u.status = UDSL_NO_FIRMWARE;
goto out;
}
/* Set up interrupt endpoint */
intf = usb_ifnum_to_if(instance->u.usb_dev, 0);
if (intf && !usb_driver_claim_interface(&speedtch_usb_driver, intf, NULL)) {
instance->int_urb = usb_alloc_urb(0, GFP_KERNEL);
if (instance->int_urb) {
usb_fill_int_urb(instance->int_urb, instance->u.usb_dev,
usb_rcvintpipe(instance->u.usb_dev, SPEEDTCH_ENDPOINT_INT),
instance->int_data,
sizeof(instance->int_data),
speedtch_handle_int, instance, 50);
err = usb_submit_urb(instance->int_urb, GFP_KERNEL);
if (err) {
/* Doesn't matter; we'll poll anyway */
dbg("speedtch_got_firmware: Submission of interrupt URB failed %d", err);
usb_free_urb(instance->int_urb);
instance->int_urb = NULL;
usb_driver_release_interface(&speedtch_usb_driver, intf);
}
}
}
/* Start status polling */
mod_timer(&instance->poll_timer, jiffies + (1 * HZ));
instance->u.status = UDSL_LOADED_FIRMWARE;
tasklet_schedule(&instance->u.receive_tasklet);
out:
up(&instance->u.serialize);
wake_up_interruptible(&instance->u.firmware_waiters);
}
static int speedtch_set_swbuff(struct speedtch_instance_data *instance,
int state)
{
struct usb_device *dev = instance->u.usb_dev;
int ret;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0x32, 0x40, state ? 0x01 : 0x00,
0x00, NULL, 0, 100);
if (ret < 0) {
printk("Warning: %sabling SW buffering: usb_control_msg returned %d\n",
state ? "En" : "Dis", ret);
return ret;
}
dbg("speedtch_set_swbuff: %sbled SW buffering", state ? "En" : "Dis");
return 0;
}
static void speedtch_test_sequence(struct speedtch_instance_data *instance)
{
struct usb_device *dev = instance->u.usb_dev;
unsigned char buf[10];
int ret;
/* URB 147 */
buf[0] = 0x1c;
buf[1] = 0x50;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0x01, 0x40, 0x0b, 0x00, buf, 2, 100);
if (ret < 0)
printk(KERN_WARNING "%s failed on URB147: %d\n", __func__, ret);
/* URB 148 */
buf[0] = 0x32;
buf[1] = 0x00;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0x01, 0x40, 0x02, 0x00, buf, 2, 100);
if (ret < 0)
printk(KERN_WARNING "%s failed on URB148: %d\n", __func__, ret);
/* URB 149 */
buf[0] = 0x01;
buf[1] = 0x00;
buf[2] = 0x01;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0x01, 0x40, 0x03, 0x00, buf, 3, 100);
if (ret < 0)
printk(KERN_WARNING "%s failed on URB149: %d\n", __func__, ret);
/* URB 150 */
buf[0] = 0x01;
buf[1] = 0x00;
buf[2] = 0x01;
ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
0x01, 0x40, 0x04, 0x00, buf, 3, 100);
if (ret < 0)
printk(KERN_WARNING "%s failed on URB150: %d\n", __func__, ret);
}
static int speedtch_start_synchro(struct speedtch_instance_data *instance)
{
struct usb_device *dev = instance->u.usb_dev;
unsigned char buf[2];
int ret;
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
0x12, 0xc0, 0x04, 0x00,
buf, sizeof(buf), CTRL_TIMEOUT);
if (ret < 0) {
printk(KERN_WARNING "SpeedTouch: Failed to start ADSL synchronisation: %d\n", ret);
return ret;
}
dbg("speedtch_start_synchro: modem prodded. %d Bytes returned: %02x %02x", ret, buf[0], buf[1]);
return 0;
}
static void speedtch_handle_int(struct urb *urb, struct pt_regs *regs)
{
struct speedtch_instance_data *instance = urb->context;
unsigned int count = urb->actual_length;
int ret;
/* The magic interrupt for "up state" */
const static unsigned char up_int[6] = { 0xa1, 0x00, 0x01, 0x00, 0x00, 0x00 };
/* The magic interrupt for "down state" */
const static unsigned char down_int[6] = { 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00 };
switch (urb->status) {
case 0:
/* success */
break;
case -ECONNRESET:
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated; clean up */
dbg("%s - urb shutting down with status: %d", __func__, urb->status);
return;
default:
dbg("%s - nonzero urb status received: %d", __func__, urb->status);
goto exit;
}
if (count < 6) {
dbg("%s - int packet too short", __func__);
goto exit;
}
if (!memcmp(up_int, instance->int_data, 6)) {
del_timer(&instance->poll_timer);
printk(KERN_NOTICE "DSL line goes up\n");
} else if (!memcmp(down_int, instance->int_data, 6)) {
printk(KERN_NOTICE "DSL line goes down\n");
} else {
int i;
printk(KERN_DEBUG "Unknown interrupt packet of %d bytes:", count);
for (i = 0; i < count; i++)
printk(" %02x", instance->int_data[i]);
printk("\n");
}
schedule_work(&instance->poll_work);
exit:
rmb();
if (!instance->int_urb)
return;
ret = usb_submit_urb(urb, GFP_ATOMIC);
if (ret)
err("%s - usb_submit_urb failed with result %d", __func__, ret);
}
static int speedtch_get_status(struct speedtch_instance_data *instance,
unsigned char *buf)
{
struct usb_device *dev = instance->u.usb_dev;
int ret;
memset(buf, 0, TOTAL);
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
0x12, 0xc0, 0x07, 0x00, buf + OFFSET_7, SIZE_7,
CTRL_TIMEOUT);
if (ret < 0) {
dbg("MSG 7 failed");
return ret;
}
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
0x12, 0xc0, 0x0b, 0x00, buf + OFFSET_b, SIZE_b,
CTRL_TIMEOUT);
if (ret < 0) {
dbg("MSG B failed");
return ret;
}
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
0x12, 0xc0, 0x0d, 0x00, buf + OFFSET_d, SIZE_d,
CTRL_TIMEOUT);
if (ret < 0) {
dbg("MSG D failed");
return ret;
}
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
0x01, 0xc0, 0x0e, 0x00, buf + OFFSET_e, SIZE_e,
CTRL_TIMEOUT);
if (ret < 0) {
dbg("MSG E failed");
return ret;
}
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
0x01, 0xc0, 0x0f, 0x00, buf + OFFSET_f, SIZE_f,
CTRL_TIMEOUT);
if (ret < 0) {
dbg("MSG F failed");
return ret;
}
return 0;
}
static void speedtch_poll_status(struct speedtch_instance_data *instance)
{
unsigned char buf[TOTAL];
int ret;
ret = speedtch_get_status(instance, buf);
if (ret) {
printk(KERN_WARNING
"SpeedTouch: Error %d fetching device status\n", ret);
return;
}
dbg("Line state %02x", buf[OFFSET_7]);
switch (buf[OFFSET_7]) {
case 0:
if (instance->u.atm_dev->signal != ATM_PHY_SIG_LOST) {
instance->u.atm_dev->signal = ATM_PHY_SIG_LOST;
printk(KERN_NOTICE "ADSL line is down\n");
}
break;
case 0x08:
if (instance->u.atm_dev->signal != ATM_PHY_SIG_UNKNOWN) {
instance->u.atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
printk(KERN_NOTICE "ADSL line is blocked?\n");
}
break;
case 0x10:
if (instance->u.atm_dev->signal != ATM_PHY_SIG_LOST) {
instance->u.atm_dev->signal = ATM_PHY_SIG_LOST;
printk(KERN_NOTICE "ADSL line is synchronising\n");
}
break;
case 0x20:
if (instance->u.atm_dev->signal != ATM_PHY_SIG_FOUND) {
int down_speed = buf[OFFSET_b] | (buf[OFFSET_b + 1] << 8)
| (buf[OFFSET_b + 2] << 16) | (buf[OFFSET_b + 3] << 24);
int up_speed = buf[OFFSET_b + 4] | (buf[OFFSET_b + 5] << 8)
| (buf[OFFSET_b + 6] << 16) | (buf[OFFSET_b + 7] << 24);
if (!(down_speed & 0x0000ffff) &&
!(up_speed & 0x0000ffff)) {
down_speed >>= 16;
up_speed >>= 16;
}
instance->u.atm_dev->link_rate = down_speed * 1000 / 424;
instance->u.atm_dev->signal = ATM_PHY_SIG_FOUND;
printk(KERN_NOTICE
"ADSL line is up (%d Kib/s down | %d Kib/s up)\n",
down_speed, up_speed);
}
break;
default:
if (instance->u.atm_dev->signal != ATM_PHY_SIG_UNKNOWN) {
instance->u.atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
printk(KERN_NOTICE "Unknown line state %02x\n", buf[OFFSET_7]);
}
break;
}
}
static void speedtch_timer_poll(unsigned long data)
{
struct speedtch_instance_data *instance = (void *)data;
schedule_work(&instance->poll_work);
mod_timer(&instance->poll_timer, jiffies + (5 * HZ));
}
#ifdef USE_FW_LOADER
static void speedtch_upload_firmware(struct speedtch_instance_data *instance,
const struct firmware *fw1,
const struct firmware *fw2)
{
unsigned char *buffer;
struct usb_device *usb_dev = instance->u.usb_dev;
struct usb_interface *intf;
int actual_length, ret;
int offset;
dbg("speedtch_upload_firmware");
if (!(intf = usb_ifnum_to_if(usb_dev, 2))) {
dbg("speedtch_upload_firmware: interface not found!");
goto fail;
}
if (!(buffer = (unsigned char *)__get_free_page(GFP_KERNEL))) {
dbg("speedtch_upload_firmware: no memory for buffer!");
goto fail;
}
/* A user-space firmware loader may already have claimed interface #2 */
if ((ret =
usb_driver_claim_interface(&speedtch_usb_driver, intf, NULL)) < 0) {
dbg("speedtch_upload_firmware: interface in use (%d)!", ret);
goto fail_free;
}
/* URB 7 */
if (dl_512_first) { /* some modems need a read before writing the firmware */
ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
buffer, 0x200, &actual_length, 2000);
if (ret < 0 && ret != -ETIMEDOUT)
dbg("speedtch_upload_firmware: read BLOCK0 from modem failed (%d)!", ret);
else
dbg("speedtch_upload_firmware: BLOCK0 downloaded (%d bytes)", ret);
}
/* URB 8 : both leds are static green */
for (offset = 0; offset < fw1->size; offset += PAGE_SIZE) {
int thislen = min_t(int, PAGE_SIZE, fw1->size - offset);
memcpy(buffer, fw1->data + offset, thislen);
ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
buffer, thislen, &actual_length, DATA_TIMEOUT);
if (ret < 0) {
dbg("speedtch_upload_firmware: write BLOCK1 to modem failed (%d)!", ret);
goto fail_release;
}
dbg("speedtch_upload_firmware: BLOCK1 uploaded (%zu bytes)", fw1->size);
}
/* USB led blinking green, ADSL led off */
/* URB 11 */
ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
buffer, 0x200, &actual_length, DATA_TIMEOUT);
if (ret < 0) {
dbg("speedtch_upload_firmware: read BLOCK2 from modem failed (%d)!", ret);
goto fail_release;
}
dbg("speedtch_upload_firmware: BLOCK2 downloaded (%d bytes)", actual_length);
/* URBs 12 to 139 - USB led blinking green, ADSL led off */
for (offset = 0; offset < fw2->size; offset += PAGE_SIZE) {
int thislen = min_t(int, PAGE_SIZE, fw2->size - offset);
memcpy(buffer, fw2->data + offset, thislen);
ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
buffer, thislen, &actual_length, DATA_TIMEOUT);
if (ret < 0) {
dbg("speedtch_upload_firmware: write BLOCK3 to modem failed (%d)!", ret);
goto fail_release;
}
}
dbg("speedtch_upload_firmware: BLOCK3 uploaded (%zu bytes)", fw2->size);
/* USB led static green, ADSL led static red */
/* URB 142 */
ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
buffer, 0x200, &actual_length, DATA_TIMEOUT);
if (ret < 0) {
dbg("speedtch_upload_firmware: read BLOCK4 from modem failed (%d)!", ret);
goto fail_release;
}
/* success */
dbg("speedtch_upload_firmware: BLOCK4 downloaded (%d bytes)", actual_length);
/* Delay to allow firmware to start up. We can do this here
because we're in our own kernel thread anyway. */
msleep(1000);
/* Enable software buffering, if requested */
if (sw_buffering)
speedtch_set_swbuff(instance, 1);
/* Magic spell; don't ask us what this does */
speedtch_test_sequence(instance);
/* Start modem synchronisation */
if (speedtch_start_synchro(instance))
dbg("speedtch_start_synchro: failed");
speedtch_got_firmware(instance, 1);
free_page((unsigned long)buffer);
return;
fail_release:
/* Only release interface #2 if uploading failed; we don't release it
we succeeded. This prevents the userspace tools from trying to load
the firmware themselves */
usb_driver_release_interface(&speedtch_usb_driver, intf);
fail_free:
free_page((unsigned long)buffer);
fail:
speedtch_got_firmware(instance, 0);
}
static int speedtch_find_firmware(struct speedtch_instance_data
*instance, int phase,
const struct firmware **fw_p)
{
char buf[24];
const u16 bcdDevice = le16_to_cpu(instance->u.usb_dev->descriptor.bcdDevice);
const u8 major_revision = bcdDevice >> 8;
const u8 minor_revision = bcdDevice & 0xff;
sprintf(buf, "speedtch-%d.bin.%x.%02x", phase, major_revision, minor_revision);
dbg("speedtch_find_firmware: looking for %s", buf);
if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) {
sprintf(buf, "speedtch-%d.bin.%x", phase, major_revision);
dbg("speedtch_find_firmware: looking for %s", buf);
if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) {
sprintf(buf, "speedtch-%d.bin", phase);
dbg("speedtch_find_firmware: looking for %s", buf);
if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) {
dev_warn(&instance->u.usb_dev->dev, "no stage %d firmware found!", phase);
return -ENOENT;
}
}
}
dev_info(&instance->u.usb_dev->dev, "found stage %d firmware %s\n", phase, buf);
return 0;
}
static int speedtch_load_firmware(void *arg)
{
const struct firmware *fw1, *fw2;
struct speedtch_instance_data *instance = arg;
BUG_ON(!instance);
daemonize("firmware/speedtch");
if (!speedtch_find_firmware(instance, 1, &fw1)) {
if (!speedtch_find_firmware(instance, 2, &fw2)) {
speedtch_upload_firmware(instance, fw1, fw2);
release_firmware(fw2);
}
release_firmware(fw1);
}
/* In case we failed, set state back to NO_FIRMWARE so that
another later attempt may work. Otherwise, we never actually
manage to recover if, for example, the firmware is on /usr and
we look for it too early. */
speedtch_got_firmware(instance, 0);
module_put(THIS_MODULE);
udsl_put_instance(&instance->u);
return 0;
}
#endif /* USE_FW_LOADER */
static void speedtch_firmware_start(struct speedtch_instance_data *instance)
{
#ifdef USE_FW_LOADER
int ret;
#endif
dbg("speedtch_firmware_start");
down(&instance->u.serialize); /* vs self, speedtch_got_firmware */
if (instance->u.status >= UDSL_LOADING_FIRMWARE) {
up(&instance->u.serialize);
return;
}
instance->u.status = UDSL_LOADING_FIRMWARE;
up(&instance->u.serialize);
#ifdef USE_FW_LOADER
udsl_get_instance(&instance->u);
try_module_get(THIS_MODULE);
ret = kernel_thread(speedtch_load_firmware, instance,
CLONE_FS | CLONE_FILES);
if (ret >= 0)
return; /* OK */
dbg("speedtch_firmware_start: kernel_thread failed (%d)!", ret);
module_put(THIS_MODULE);
udsl_put_instance(&instance->u);
/* Just pretend it never happened... hope modem_run happens */
#endif /* USE_FW_LOADER */
speedtch_got_firmware(instance, 0);
}
static int speedtch_firmware_wait(struct udsl_instance_data *instance)
{
speedtch_firmware_start((void *)instance);
if (wait_event_interruptible(instance->firmware_waiters, instance->status != UDSL_LOADING_FIRMWARE) < 0)
return -ERESTARTSYS;
return (instance->status == UDSL_LOADED_FIRMWARE) ? 0 : -EAGAIN;
}
/**********
** USB **
**********/
static int speedtch_usb_ioctl(struct usb_interface *intf, unsigned int code,
void *user_data)
{
struct speedtch_instance_data *instance = usb_get_intfdata(intf);
dbg("speedtch_usb_ioctl entered");
if (!instance) {
dbg("speedtch_usb_ioctl: NULL instance!");
return -ENODEV;
}
switch (code) {
case UDSL_IOCTL_LINE_UP:
instance->u.atm_dev->signal = ATM_PHY_SIG_FOUND;
speedtch_got_firmware(instance, 1);
return (instance->u.status == UDSL_LOADED_FIRMWARE) ? 0 : -EIO;
case UDSL_IOCTL_LINE_DOWN:
instance->u.atm_dev->signal = ATM_PHY_SIG_LOST;
return 0;
default:
return -ENOTTY;
}
}
static int speedtch_usb_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
struct usb_device *dev = interface_to_usbdev(intf);
int ifnum = intf->altsetting->desc.bInterfaceNumber;
struct speedtch_instance_data *instance;
unsigned char mac_str[13];
int ret, i;
char buf7[SIZE_7];
dbg("speedtch_usb_probe: trying device with vendor=0x%x, product=0x%x, ifnum %d",
le16_to_cpu(dev->descriptor.idVendor),
le16_to_cpu(dev->descriptor.idProduct), ifnum);
if ((dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) ||
(ifnum != 1))
return -ENODEV;
dbg("speedtch_usb_probe: device accepted");
/* instance init */
instance = kmalloc(sizeof(*instance), GFP_KERNEL);
if (!instance) {
dbg("speedtch_usb_probe: no memory for instance data!");
return -ENOMEM;
}
memset(instance, 0, sizeof(struct speedtch_instance_data));
if ((ret = usb_set_interface(dev, 0, 0)) < 0)
goto fail;
if ((ret = usb_set_interface(dev, 2, 0)) < 0)
goto fail;
instance->u.data_endpoint = SPEEDTCH_ENDPOINT_DATA;
instance->u.firmware_wait = speedtch_firmware_wait;
instance->u.driver_name = speedtch_driver_name;
ret = udsl_instance_setup(dev, &instance->u);
if (ret)
goto fail;
init_timer(&instance->poll_timer);
instance->poll_timer.function = speedtch_timer_poll;
instance->poll_timer.data = (unsigned long)instance;
INIT_WORK(&instance->poll_work, (void *)speedtch_poll_status, instance);
/* set MAC address, it is stored in the serial number */
memset(instance->u.atm_dev->esi, 0, sizeof(instance->u.atm_dev->esi));
if (usb_string(dev, dev->descriptor.iSerialNumber, mac_str, sizeof(mac_str)) == 12) {
for (i = 0; i < 6; i++)
instance->u.atm_dev->esi[i] =
(hex2int(mac_str[i * 2]) * 16) + (hex2int(mac_str[i * 2 + 1]));
}
/* First check whether the modem already seems to be alive */
ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
0x12, 0xc0, 0x07, 0x00, buf7, SIZE_7, 500);
if (ret == SIZE_7) {
dbg("firmware appears to be already loaded");
speedtch_got_firmware(instance, 1);
speedtch_poll_status(instance);
} else {
speedtch_firmware_start(instance);
}
usb_set_intfdata(intf, instance);
return 0;
fail:
kfree(instance);
return -ENOMEM;
}
static void speedtch_usb_disconnect(struct usb_interface *intf)
{
struct speedtch_instance_data *instance = usb_get_intfdata(intf);
dbg("speedtch_usb_disconnect entered");
if (!instance) {
dbg("speedtch_usb_disconnect: NULL instance!");
return;
}
/*QQ need to handle disconnects on interface #2 while uploading firmware */
/*QQ and what about interface #1? */
if (instance->int_urb) {
struct urb *int_urb = instance->int_urb;
instance->int_urb = NULL;
wmb();
usb_unlink_urb(int_urb);
usb_free_urb(int_urb);
}
instance->int_data[0] = 1;
del_timer_sync(&instance->poll_timer);
wmb();
flush_scheduled_work();
udsl_instance_disconnect(&instance->u);
/* clean up */
usb_set_intfdata(intf, NULL);
udsl_put_instance(&instance->u);
}
/***********
** init **
***********/
static int __init speedtch_usb_init(void)
{
dbg("speedtch_usb_init: driver version " DRIVER_VERSION);
return usb_register(&speedtch_usb_driver);
}
static void __exit speedtch_usb_cleanup(void)
{
dbg("speedtch_usb_cleanup entered");
usb_deregister(&speedtch_usb_driver);
}
module_init(speedtch_usb_init);
module_exit(speedtch_usb_cleanup);
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);
Reference in New Issue View Git Blame Copy Permalink