974 lines
28 KiB
C
974 lines
28 KiB
C
/******************************************************************************
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* speedtch.c - Alcatel SpeedTouch USB xDSL modem driver
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*
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* Copyright (C) 2001, Alcatel
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* Copyright (C) 2003, Duncan Sands
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* Copyright (C) 2004, David Woodhouse
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*
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* Based on "modem_run.c", copyright (C) 2001, Benoit Papillault
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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******************************************************************************/
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#include <asm/page.h>
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#include <linux/device.h>
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#include <linux/errno.h>
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#include <linux/firmware.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/slab.h>
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#include <linux/stat.h>
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#include <linux/timer.h>
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#include <linux/types.h>
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#include <linux/usb/ch9.h>
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#include <linux/workqueue.h>
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#include "usbatm.h"
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#define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <duncan.sands@free.fr>"
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#define DRIVER_VERSION "1.10"
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#define DRIVER_DESC "Alcatel SpeedTouch USB driver version " DRIVER_VERSION
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static const char speedtch_driver_name[] = "speedtch";
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#define CTRL_TIMEOUT 2000 /* milliseconds */
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#define DATA_TIMEOUT 2000 /* milliseconds */
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#define OFFSET_7 0 /* size 1 */
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#define OFFSET_b 1 /* size 8 */
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#define OFFSET_d 9 /* size 4 */
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#define OFFSET_e 13 /* size 1 */
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#define OFFSET_f 14 /* size 1 */
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#define SIZE_7 1
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#define SIZE_b 8
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#define SIZE_d 4
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#define SIZE_e 1
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#define SIZE_f 1
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#define MIN_POLL_DELAY 5000 /* milliseconds */
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#define MAX_POLL_DELAY 60000 /* milliseconds */
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#define RESUBMIT_DELAY 1000 /* milliseconds */
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#define DEFAULT_BULK_ALTSETTING 1
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#define DEFAULT_ISOC_ALTSETTING 3
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#define DEFAULT_DL_512_FIRST 0
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#define DEFAULT_ENABLE_ISOC 0
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#define DEFAULT_SW_BUFFERING 0
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static unsigned int altsetting = 0; /* zero means: use the default */
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static int dl_512_first = DEFAULT_DL_512_FIRST;
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static int enable_isoc = DEFAULT_ENABLE_ISOC;
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static int sw_buffering = DEFAULT_SW_BUFFERING;
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#define DEFAULT_B_MAX_DSL 8128
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#define DEFAULT_MODEM_MODE 11
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#define MODEM_OPTION_LENGTH 16
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static const unsigned char DEFAULT_MODEM_OPTION[MODEM_OPTION_LENGTH] = {
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0x10, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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static unsigned int BMaxDSL = DEFAULT_B_MAX_DSL;
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static unsigned char ModemMode = DEFAULT_MODEM_MODE;
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static unsigned char ModemOption[MODEM_OPTION_LENGTH];
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static unsigned int num_ModemOption;
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module_param(altsetting, uint, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(altsetting,
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"Alternative setting for data interface (bulk_default: "
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__MODULE_STRING(DEFAULT_BULK_ALTSETTING) "; isoc_default: "
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__MODULE_STRING(DEFAULT_ISOC_ALTSETTING) ")");
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module_param(dl_512_first, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(dl_512_first,
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"Read 512 bytes before sending firmware (default: "
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__MODULE_STRING(DEFAULT_DL_512_FIRST) ")");
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module_param(enable_isoc, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(enable_isoc,
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"Use isochronous transfers if available (default: "
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__MODULE_STRING(DEFAULT_ENABLE_ISOC) ")");
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module_param(sw_buffering, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(sw_buffering,
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"Enable software buffering (default: "
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__MODULE_STRING(DEFAULT_SW_BUFFERING) ")");
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module_param(BMaxDSL, uint, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(BMaxDSL,
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"default: " __MODULE_STRING(DEFAULT_B_MAX_DSL));
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module_param(ModemMode, byte, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(ModemMode,
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"default: " __MODULE_STRING(DEFAULT_MODEM_MODE));
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module_param_array(ModemOption, byte, &num_ModemOption, S_IRUGO);
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MODULE_PARM_DESC(ModemOption, "default: 0x10,0x00,0x00,0x00,0x20");
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#define INTERFACE_DATA 1
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#define ENDPOINT_INT 0x81
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#define ENDPOINT_BULK_DATA 0x07
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#define ENDPOINT_ISOC_DATA 0x07
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#define ENDPOINT_FIRMWARE 0x05
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#define hex2int(c) ( (c >= '0') && (c <= '9') ? (c - '0') : ((c & 0xf) + 9) )
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struct speedtch_params {
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unsigned int altsetting;
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unsigned int BMaxDSL;
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unsigned char ModemMode;
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unsigned char ModemOption[MODEM_OPTION_LENGTH];
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};
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struct speedtch_instance_data {
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struct usbatm_data *usbatm;
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struct speedtch_params params; /* set in probe, constant afterwards */
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struct delayed_work status_checker;
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unsigned char last_status;
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int poll_delay; /* milliseconds */
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struct timer_list resubmit_timer;
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struct urb *int_urb;
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unsigned char int_data[16];
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unsigned char scratch_buffer[16];
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};
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/***************
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** firmware **
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***************/
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static void speedtch_set_swbuff(struct speedtch_instance_data *instance, int state)
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{
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struct usbatm_data *usbatm = instance->usbatm;
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struct usb_device *usb_dev = usbatm->usb_dev;
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int ret;
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ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
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0x32, 0x40, state ? 0x01 : 0x00, 0x00, NULL, 0, CTRL_TIMEOUT);
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if (ret < 0)
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usb_warn(usbatm,
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"%sabling SW buffering: usb_control_msg returned %d\n",
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state ? "En" : "Dis", ret);
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else
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dbg("speedtch_set_swbuff: %sbled SW buffering", state ? "En" : "Dis");
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}
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static void speedtch_test_sequence(struct speedtch_instance_data *instance)
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{
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struct usbatm_data *usbatm = instance->usbatm;
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struct usb_device *usb_dev = usbatm->usb_dev;
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unsigned char *buf = instance->scratch_buffer;
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int ret;
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/* URB 147 */
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buf[0] = 0x1c;
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buf[1] = 0x50;
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ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
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0x01, 0x40, 0x0b, 0x00, buf, 2, CTRL_TIMEOUT);
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if (ret < 0)
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usb_warn(usbatm, "%s failed on URB147: %d\n", __func__, ret);
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/* URB 148 */
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buf[0] = 0x32;
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buf[1] = 0x00;
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ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
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0x01, 0x40, 0x02, 0x00, buf, 2, CTRL_TIMEOUT);
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if (ret < 0)
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usb_warn(usbatm, "%s failed on URB148: %d\n", __func__, ret);
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/* URB 149 */
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buf[0] = 0x01;
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buf[1] = 0x00;
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buf[2] = 0x01;
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ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
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0x01, 0x40, 0x03, 0x00, buf, 3, CTRL_TIMEOUT);
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if (ret < 0)
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usb_warn(usbatm, "%s failed on URB149: %d\n", __func__, ret);
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/* URB 150 */
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buf[0] = 0x01;
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buf[1] = 0x00;
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buf[2] = 0x01;
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ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
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0x01, 0x40, 0x04, 0x00, buf, 3, CTRL_TIMEOUT);
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if (ret < 0)
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usb_warn(usbatm, "%s failed on URB150: %d\n", __func__, ret);
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/* Extra initialisation in recent drivers - gives higher speeds */
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/* URBext1 */
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buf[0] = instance->params.ModemMode;
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ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
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0x01, 0x40, 0x11, 0x00, buf, 1, CTRL_TIMEOUT);
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if (ret < 0)
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usb_warn(usbatm, "%s failed on URBext1: %d\n", __func__, ret);
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/* URBext2 */
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/* This seems to be the one which actually triggers the higher sync
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rate -- it does require the new firmware too, although it works OK
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with older firmware */
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ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
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0x01, 0x40, 0x14, 0x00,
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instance->params.ModemOption,
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MODEM_OPTION_LENGTH, CTRL_TIMEOUT);
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if (ret < 0)
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usb_warn(usbatm, "%s failed on URBext2: %d\n", __func__, ret);
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/* URBext3 */
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buf[0] = instance->params.BMaxDSL & 0xff;
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buf[1] = instance->params.BMaxDSL >> 8;
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ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
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0x01, 0x40, 0x12, 0x00, buf, 2, CTRL_TIMEOUT);
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if (ret < 0)
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usb_warn(usbatm, "%s failed on URBext3: %d\n", __func__, ret);
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}
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static int speedtch_upload_firmware(struct speedtch_instance_data *instance,
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const struct firmware *fw1,
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const struct firmware *fw2)
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{
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unsigned char *buffer;
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struct usbatm_data *usbatm = instance->usbatm;
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struct usb_device *usb_dev = usbatm->usb_dev;
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int actual_length;
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int ret = 0;
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int offset;
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usb_dbg(usbatm, "%s entered\n", __func__);
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if (!(buffer = (unsigned char *)__get_free_page(GFP_KERNEL))) {
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ret = -ENOMEM;
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usb_dbg(usbatm, "%s: no memory for buffer!\n", __func__);
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goto out;
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}
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if (!usb_ifnum_to_if(usb_dev, 2)) {
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ret = -ENODEV;
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usb_dbg(usbatm, "%s: interface not found!\n", __func__);
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goto out_free;
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}
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/* URB 7 */
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if (dl_512_first) { /* some modems need a read before writing the firmware */
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ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE),
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buffer, 0x200, &actual_length, 2000);
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if (ret < 0 && ret != -ETIMEDOUT)
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usb_warn(usbatm, "%s: read BLOCK0 from modem failed (%d)!\n", __func__, ret);
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else
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usb_dbg(usbatm, "%s: BLOCK0 downloaded (%d bytes)\n", __func__, ret);
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}
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/* URB 8 : both leds are static green */
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for (offset = 0; offset < fw1->size; offset += PAGE_SIZE) {
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int thislen = min_t(int, PAGE_SIZE, fw1->size - offset);
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memcpy(buffer, fw1->data + offset, thislen);
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ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, ENDPOINT_FIRMWARE),
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buffer, thislen, &actual_length, DATA_TIMEOUT);
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if (ret < 0) {
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usb_err(usbatm, "%s: write BLOCK1 to modem failed (%d)!\n", __func__, ret);
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goto out_free;
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}
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usb_dbg(usbatm, "%s: BLOCK1 uploaded (%zu bytes)\n", __func__, fw1->size);
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}
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/* USB led blinking green, ADSL led off */
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/* URB 11 */
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ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE),
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buffer, 0x200, &actual_length, DATA_TIMEOUT);
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if (ret < 0) {
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usb_err(usbatm, "%s: read BLOCK2 from modem failed (%d)!\n", __func__, ret);
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goto out_free;
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}
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usb_dbg(usbatm, "%s: BLOCK2 downloaded (%d bytes)\n", __func__, actual_length);
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/* URBs 12 to 139 - USB led blinking green, ADSL led off */
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for (offset = 0; offset < fw2->size; offset += PAGE_SIZE) {
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int thislen = min_t(int, PAGE_SIZE, fw2->size - offset);
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memcpy(buffer, fw2->data + offset, thislen);
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ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, ENDPOINT_FIRMWARE),
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buffer, thislen, &actual_length, DATA_TIMEOUT);
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if (ret < 0) {
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usb_err(usbatm, "%s: write BLOCK3 to modem failed (%d)!\n", __func__, ret);
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goto out_free;
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}
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}
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usb_dbg(usbatm, "%s: BLOCK3 uploaded (%zu bytes)\n", __func__, fw2->size);
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/* USB led static green, ADSL led static red */
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/* URB 142 */
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ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE),
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buffer, 0x200, &actual_length, DATA_TIMEOUT);
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if (ret < 0) {
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usb_err(usbatm, "%s: read BLOCK4 from modem failed (%d)!\n", __func__, ret);
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goto out_free;
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}
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/* success */
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usb_dbg(usbatm, "%s: BLOCK4 downloaded (%d bytes)\n", __func__, actual_length);
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/* Delay to allow firmware to start up. We can do this here
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because we're in our own kernel thread anyway. */
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msleep_interruptible(1000);
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if ((ret = usb_set_interface(usb_dev, INTERFACE_DATA, instance->params.altsetting)) < 0) {
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usb_err(usbatm, "%s: setting interface to %d failed (%d)!\n", __func__, instance->params.altsetting, ret);
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goto out_free;
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}
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/* Enable software buffering, if requested */
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if (sw_buffering)
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speedtch_set_swbuff(instance, 1);
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/* Magic spell; don't ask us what this does */
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speedtch_test_sequence(instance);
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ret = 0;
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out_free:
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free_page((unsigned long)buffer);
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out:
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return ret;
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}
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static int speedtch_find_firmware(struct usbatm_data *usbatm, struct usb_interface *intf,
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int phase, const struct firmware **fw_p)
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{
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struct device *dev = &intf->dev;
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const u16 bcdDevice = le16_to_cpu(interface_to_usbdev(intf)->descriptor.bcdDevice);
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const u8 major_revision = bcdDevice >> 8;
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const u8 minor_revision = bcdDevice & 0xff;
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char buf[24];
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sprintf(buf, "speedtch-%d.bin.%x.%02x", phase, major_revision, minor_revision);
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usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf);
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if (request_firmware(fw_p, buf, dev)) {
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sprintf(buf, "speedtch-%d.bin.%x", phase, major_revision);
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usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf);
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if (request_firmware(fw_p, buf, dev)) {
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sprintf(buf, "speedtch-%d.bin", phase);
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usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf);
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if (request_firmware(fw_p, buf, dev)) {
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usb_err(usbatm, "%s: no stage %d firmware found!\n", __func__, phase);
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return -ENOENT;
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}
|
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}
|
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}
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|
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usb_info(usbatm, "found stage %d firmware %s\n", phase, buf);
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|
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return 0;
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}
|
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|
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static int speedtch_heavy_init(struct usbatm_data *usbatm, struct usb_interface *intf)
|
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{
|
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const struct firmware *fw1, *fw2;
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struct speedtch_instance_data *instance = usbatm->driver_data;
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int ret;
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|
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if ((ret = speedtch_find_firmware(usbatm, intf, 1, &fw1)) < 0)
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return ret;
|
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|
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if ((ret = speedtch_find_firmware(usbatm, intf, 2, &fw2)) < 0) {
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release_firmware(fw1);
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return ret;
|
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}
|
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|
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if ((ret = speedtch_upload_firmware(instance, fw1, fw2)) < 0)
|
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usb_err(usbatm, "%s: firmware upload failed (%d)!\n", __func__, ret);
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|
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release_firmware(fw2);
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release_firmware(fw1);
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|
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return ret;
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}
|
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|
|
|
|
/**********
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** ATM **
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**********/
|
|
|
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static int speedtch_read_status(struct speedtch_instance_data *instance)
|
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{
|
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struct usbatm_data *usbatm = instance->usbatm;
|
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struct usb_device *usb_dev = usbatm->usb_dev;
|
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unsigned char *buf = instance->scratch_buffer;
|
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int ret;
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|
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memset(buf, 0, 16);
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|
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ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
|
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0x12, 0xc0, 0x07, 0x00, buf + OFFSET_7, SIZE_7,
|
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CTRL_TIMEOUT);
|
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if (ret < 0) {
|
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atm_dbg(usbatm, "%s: MSG 7 failed\n", __func__);
|
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return ret;
|
|
}
|
|
|
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ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
|
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0x12, 0xc0, 0x0b, 0x00, buf + OFFSET_b, SIZE_b,
|
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CTRL_TIMEOUT);
|
|
if (ret < 0) {
|
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atm_dbg(usbatm, "%s: MSG B failed\n", __func__);
|
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return ret;
|
|
}
|
|
|
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ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
|
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0x12, 0xc0, 0x0d, 0x00, buf + OFFSET_d, SIZE_d,
|
|
CTRL_TIMEOUT);
|
|
if (ret < 0) {
|
|
atm_dbg(usbatm, "%s: MSG D failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
|
|
0x01, 0xc0, 0x0e, 0x00, buf + OFFSET_e, SIZE_e,
|
|
CTRL_TIMEOUT);
|
|
if (ret < 0) {
|
|
atm_dbg(usbatm, "%s: MSG E failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
|
|
0x01, 0xc0, 0x0f, 0x00, buf + OFFSET_f, SIZE_f,
|
|
CTRL_TIMEOUT);
|
|
if (ret < 0) {
|
|
atm_dbg(usbatm, "%s: MSG F failed\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int speedtch_start_synchro(struct speedtch_instance_data *instance)
|
|
{
|
|
struct usbatm_data *usbatm = instance->usbatm;
|
|
struct usb_device *usb_dev = usbatm->usb_dev;
|
|
unsigned char *buf = instance->scratch_buffer;
|
|
int ret;
|
|
|
|
atm_dbg(usbatm, "%s entered\n", __func__);
|
|
|
|
memset(buf, 0, 2);
|
|
|
|
ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
|
|
0x12, 0xc0, 0x04, 0x00,
|
|
buf, 2, CTRL_TIMEOUT);
|
|
|
|
if (ret < 0)
|
|
atm_warn(usbatm, "failed to start ADSL synchronisation: %d\n", ret);
|
|
else
|
|
atm_dbg(usbatm, "%s: modem prodded. %d bytes returned: %02x %02x\n",
|
|
__func__, ret, buf[0], buf[1]);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void speedtch_check_status(struct work_struct *work)
|
|
{
|
|
struct speedtch_instance_data *instance =
|
|
container_of(work, struct speedtch_instance_data,
|
|
status_checker.work);
|
|
struct usbatm_data *usbatm = instance->usbatm;
|
|
struct atm_dev *atm_dev = usbatm->atm_dev;
|
|
unsigned char *buf = instance->scratch_buffer;
|
|
int down_speed, up_speed, ret;
|
|
unsigned char status;
|
|
|
|
#ifdef VERBOSE_DEBUG
|
|
atm_dbg(usbatm, "%s entered\n", __func__);
|
|
#endif
|
|
|
|
ret = speedtch_read_status(instance);
|
|
if (ret < 0) {
|
|
atm_warn(usbatm, "error %d fetching device status\n", ret);
|
|
instance->poll_delay = min(2 * instance->poll_delay, MAX_POLL_DELAY);
|
|
return;
|
|
}
|
|
|
|
instance->poll_delay = max(instance->poll_delay / 2, MIN_POLL_DELAY);
|
|
|
|
status = buf[OFFSET_7];
|
|
|
|
if ((status != instance->last_status) || !status) {
|
|
atm_dbg(usbatm, "%s: line state 0x%02x\n", __func__, status);
|
|
|
|
switch (status) {
|
|
case 0:
|
|
atm_dev->signal = ATM_PHY_SIG_LOST;
|
|
if (instance->last_status)
|
|
atm_info(usbatm, "ADSL line is down\n");
|
|
/* It may never resync again unless we ask it to... */
|
|
ret = speedtch_start_synchro(instance);
|
|
break;
|
|
|
|
case 0x08:
|
|
atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
|
|
atm_info(usbatm, "ADSL line is blocked?\n");
|
|
break;
|
|
|
|
case 0x10:
|
|
atm_dev->signal = ATM_PHY_SIG_LOST;
|
|
atm_info(usbatm, "ADSL line is synchronising\n");
|
|
break;
|
|
|
|
case 0x20:
|
|
down_speed = buf[OFFSET_b] | (buf[OFFSET_b + 1] << 8)
|
|
| (buf[OFFSET_b + 2] << 16) | (buf[OFFSET_b + 3] << 24);
|
|
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;
|
|
}
|
|
|
|
atm_dev->link_rate = down_speed * 1000 / 424;
|
|
atm_dev->signal = ATM_PHY_SIG_FOUND;
|
|
|
|
atm_info(usbatm,
|
|
"ADSL line is up (%d kb/s down | %d kb/s up)\n",
|
|
down_speed, up_speed);
|
|
break;
|
|
|
|
default:
|
|
atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
|
|
atm_info(usbatm, "unknown line state %02x\n", status);
|
|
break;
|
|
}
|
|
|
|
instance->last_status = status;
|
|
}
|
|
}
|
|
|
|
static void speedtch_status_poll(unsigned long data)
|
|
{
|
|
struct speedtch_instance_data *instance = (void *)data;
|
|
|
|
schedule_delayed_work(&instance->status_checker, 0);
|
|
|
|
/* The following check is racy, but the race is harmless */
|
|
if (instance->poll_delay < MAX_POLL_DELAY)
|
|
mod_timer(&instance->status_checker.timer, jiffies + msecs_to_jiffies(instance->poll_delay));
|
|
else
|
|
atm_warn(instance->usbatm, "Too many failures - disabling line status polling\n");
|
|
}
|
|
|
|
static void speedtch_resubmit_int(unsigned long data)
|
|
{
|
|
struct speedtch_instance_data *instance = (void *)data;
|
|
struct urb *int_urb = instance->int_urb;
|
|
int ret;
|
|
|
|
atm_dbg(instance->usbatm, "%s entered\n", __func__);
|
|
|
|
if (int_urb) {
|
|
ret = usb_submit_urb(int_urb, GFP_ATOMIC);
|
|
if (!ret)
|
|
schedule_delayed_work(&instance->status_checker, 0);
|
|
else {
|
|
atm_dbg(instance->usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret);
|
|
mod_timer(&instance->resubmit_timer, jiffies + msecs_to_jiffies(RESUBMIT_DELAY));
|
|
}
|
|
}
|
|
}
|
|
|
|
static void speedtch_handle_int(struct urb *int_urb)
|
|
{
|
|
struct speedtch_instance_data *instance = int_urb->context;
|
|
struct usbatm_data *usbatm = instance->usbatm;
|
|
unsigned int count = int_urb->actual_length;
|
|
int status = int_urb->status;
|
|
int ret;
|
|
|
|
/* The magic interrupt for "up state" */
|
|
static const unsigned char up_int[6] = { 0xa1, 0x00, 0x01, 0x00, 0x00, 0x00 };
|
|
/* The magic interrupt for "down state" */
|
|
static const unsigned char down_int[6] = { 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
|
|
|
atm_dbg(usbatm, "%s entered\n", __func__);
|
|
|
|
if (status < 0) {
|
|
atm_dbg(usbatm, "%s: nonzero urb status %d!\n", __func__, status);
|
|
goto fail;
|
|
}
|
|
|
|
if ((count == 6) && !memcmp(up_int, instance->int_data, 6)) {
|
|
del_timer(&instance->status_checker.timer);
|
|
atm_info(usbatm, "DSL line goes up\n");
|
|
} else if ((count == 6) && !memcmp(down_int, instance->int_data, 6)) {
|
|
atm_info(usbatm, "DSL line goes down\n");
|
|
} else {
|
|
int i;
|
|
|
|
atm_dbg(usbatm, "%s: unknown interrupt packet of length %d:", __func__, count);
|
|
for (i = 0; i < count; i++)
|
|
printk(" %02x", instance->int_data[i]);
|
|
printk("\n");
|
|
goto fail;
|
|
}
|
|
|
|
if ((int_urb = instance->int_urb)) {
|
|
ret = usb_submit_urb(int_urb, GFP_ATOMIC);
|
|
schedule_delayed_work(&instance->status_checker, 0);
|
|
if (ret < 0) {
|
|
atm_dbg(usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
return;
|
|
|
|
fail:
|
|
if ((int_urb = instance->int_urb))
|
|
mod_timer(&instance->resubmit_timer, jiffies + msecs_to_jiffies(RESUBMIT_DELAY));
|
|
}
|
|
|
|
static int speedtch_atm_start(struct usbatm_data *usbatm, struct atm_dev *atm_dev)
|
|
{
|
|
struct usb_device *usb_dev = usbatm->usb_dev;
|
|
struct speedtch_instance_data *instance = usbatm->driver_data;
|
|
int i, ret;
|
|
unsigned char mac_str[13];
|
|
|
|
atm_dbg(usbatm, "%s entered\n", __func__);
|
|
|
|
/* Set MAC address, it is stored in the serial number */
|
|
memset(atm_dev->esi, 0, sizeof(atm_dev->esi));
|
|
if (usb_string(usb_dev, usb_dev->descriptor.iSerialNumber, mac_str, sizeof(mac_str)) == 12) {
|
|
for (i = 0; i < 6; i++)
|
|
atm_dev->esi[i] = (hex2int(mac_str[i * 2]) * 16) + (hex2int(mac_str[i * 2 + 1]));
|
|
}
|
|
|
|
/* Start modem synchronisation */
|
|
ret = speedtch_start_synchro(instance);
|
|
|
|
/* Set up interrupt endpoint */
|
|
if (instance->int_urb) {
|
|
ret = usb_submit_urb(instance->int_urb, GFP_KERNEL);
|
|
if (ret < 0) {
|
|
/* Doesn't matter; we'll poll anyway */
|
|
atm_dbg(usbatm, "%s: submission of interrupt URB failed (%d)!\n", __func__, ret);
|
|
usb_free_urb(instance->int_urb);
|
|
instance->int_urb = NULL;
|
|
}
|
|
}
|
|
|
|
/* Start status polling */
|
|
mod_timer(&instance->status_checker.timer, jiffies + msecs_to_jiffies(1000));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void speedtch_atm_stop(struct usbatm_data *usbatm, struct atm_dev *atm_dev)
|
|
{
|
|
struct speedtch_instance_data *instance = usbatm->driver_data;
|
|
struct urb *int_urb = instance->int_urb;
|
|
|
|
atm_dbg(usbatm, "%s entered\n", __func__);
|
|
|
|
del_timer_sync(&instance->status_checker.timer);
|
|
|
|
/*
|
|
* Since resubmit_timer and int_urb can schedule themselves and
|
|
* each other, shutting them down correctly takes some care
|
|
*/
|
|
instance->int_urb = NULL; /* signal shutdown */
|
|
mb();
|
|
usb_kill_urb(int_urb);
|
|
del_timer_sync(&instance->resubmit_timer);
|
|
/*
|
|
* At this point, speedtch_handle_int and speedtch_resubmit_int
|
|
* can run or be running, but instance->int_urb == NULL means that
|
|
* they will not reschedule
|
|
*/
|
|
usb_kill_urb(int_urb);
|
|
del_timer_sync(&instance->resubmit_timer);
|
|
usb_free_urb(int_urb);
|
|
|
|
flush_scheduled_work();
|
|
}
|
|
|
|
static int speedtch_pre_reset(struct usb_interface *intf)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int speedtch_post_reset(struct usb_interface *intf)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**********
|
|
** USB **
|
|
**********/
|
|
|
|
static struct usb_device_id speedtch_usb_ids[] = {
|
|
{USB_DEVICE(0x06b9, 0x4061)},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(usb, speedtch_usb_ids);
|
|
|
|
static int speedtch_usb_probe(struct usb_interface *, const struct usb_device_id *);
|
|
|
|
static struct usb_driver speedtch_usb_driver = {
|
|
.name = speedtch_driver_name,
|
|
.probe = speedtch_usb_probe,
|
|
.disconnect = usbatm_usb_disconnect,
|
|
.pre_reset = speedtch_pre_reset,
|
|
.post_reset = speedtch_post_reset,
|
|
.id_table = speedtch_usb_ids
|
|
};
|
|
|
|
static void speedtch_release_interfaces(struct usb_device *usb_dev, int num_interfaces) {
|
|
struct usb_interface *cur_intf;
|
|
int i;
|
|
|
|
for(i = 0; i < num_interfaces; i++)
|
|
if ((cur_intf = usb_ifnum_to_if(usb_dev, i))) {
|
|
usb_set_intfdata(cur_intf, NULL);
|
|
usb_driver_release_interface(&speedtch_usb_driver, cur_intf);
|
|
}
|
|
}
|
|
|
|
static int speedtch_bind(struct usbatm_data *usbatm,
|
|
struct usb_interface *intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct usb_device *usb_dev = interface_to_usbdev(intf);
|
|
struct usb_interface *cur_intf, *data_intf;
|
|
struct speedtch_instance_data *instance;
|
|
int ifnum = intf->altsetting->desc.bInterfaceNumber;
|
|
int num_interfaces = usb_dev->actconfig->desc.bNumInterfaces;
|
|
int i, ret;
|
|
int use_isoc;
|
|
|
|
usb_dbg(usbatm, "%s entered\n", __func__);
|
|
|
|
/* sanity checks */
|
|
|
|
if (usb_dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) {
|
|
usb_err(usbatm, "%s: wrong device class %d\n", __func__, usb_dev->descriptor.bDeviceClass);
|
|
return -ENODEV;
|
|
}
|
|
|
|
if (!(data_intf = usb_ifnum_to_if(usb_dev, INTERFACE_DATA))) {
|
|
usb_err(usbatm, "%s: data interface not found!\n", __func__);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* claim all interfaces */
|
|
|
|
for (i=0; i < num_interfaces; i++) {
|
|
cur_intf = usb_ifnum_to_if(usb_dev, i);
|
|
|
|
if ((i != ifnum) && cur_intf) {
|
|
ret = usb_driver_claim_interface(&speedtch_usb_driver, cur_intf, usbatm);
|
|
|
|
if (ret < 0) {
|
|
usb_err(usbatm, "%s: failed to claim interface %2d (%d)!\n", __func__, i, ret);
|
|
speedtch_release_interfaces(usb_dev, i);
|
|
return ret;
|
|
}
|
|
}
|
|
}
|
|
|
|
instance = kzalloc(sizeof(*instance), GFP_KERNEL);
|
|
|
|
if (!instance) {
|
|
usb_err(usbatm, "%s: no memory for instance data!\n", __func__);
|
|
ret = -ENOMEM;
|
|
goto fail_release;
|
|
}
|
|
|
|
instance->usbatm = usbatm;
|
|
|
|
/* module parameters may change at any moment, so take a snapshot */
|
|
instance->params.altsetting = altsetting;
|
|
instance->params.BMaxDSL = BMaxDSL;
|
|
instance->params.ModemMode = ModemMode;
|
|
memcpy(instance->params.ModemOption, DEFAULT_MODEM_OPTION, MODEM_OPTION_LENGTH);
|
|
memcpy(instance->params.ModemOption, ModemOption, num_ModemOption);
|
|
use_isoc = enable_isoc;
|
|
|
|
if (instance->params.altsetting)
|
|
if ((ret = usb_set_interface(usb_dev, INTERFACE_DATA, instance->params.altsetting)) < 0) {
|
|
usb_err(usbatm, "%s: setting interface to %2d failed (%d)!\n", __func__, instance->params.altsetting, ret);
|
|
instance->params.altsetting = 0; /* fall back to default */
|
|
}
|
|
|
|
if (!instance->params.altsetting && use_isoc)
|
|
if ((ret = usb_set_interface(usb_dev, INTERFACE_DATA, DEFAULT_ISOC_ALTSETTING)) < 0) {
|
|
usb_dbg(usbatm, "%s: setting interface to %2d failed (%d)!\n", __func__, DEFAULT_ISOC_ALTSETTING, ret);
|
|
use_isoc = 0; /* fall back to bulk */
|
|
}
|
|
|
|
if (use_isoc) {
|
|
const struct usb_host_interface *desc = data_intf->cur_altsetting;
|
|
const __u8 target_address = USB_DIR_IN | usbatm->driver->isoc_in;
|
|
|
|
use_isoc = 0; /* fall back to bulk if endpoint not found */
|
|
|
|
for (i=0; i<desc->desc.bNumEndpoints; i++) {
|
|
const struct usb_endpoint_descriptor *endpoint_desc = &desc->endpoint[i].desc;
|
|
|
|
if ((endpoint_desc->bEndpointAddress == target_address)) {
|
|
use_isoc =
|
|
usb_endpoint_xfer_isoc(endpoint_desc);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!use_isoc)
|
|
usb_info(usbatm, "isochronous transfer not supported - using bulk\n");
|
|
}
|
|
|
|
if (!use_isoc && !instance->params.altsetting)
|
|
if ((ret = usb_set_interface(usb_dev, INTERFACE_DATA, DEFAULT_BULK_ALTSETTING)) < 0) {
|
|
usb_err(usbatm, "%s: setting interface to %2d failed (%d)!\n", __func__, DEFAULT_BULK_ALTSETTING, ret);
|
|
goto fail_free;
|
|
}
|
|
|
|
if (!instance->params.altsetting)
|
|
instance->params.altsetting = use_isoc ? DEFAULT_ISOC_ALTSETTING : DEFAULT_BULK_ALTSETTING;
|
|
|
|
usbatm->flags |= (use_isoc ? UDSL_USE_ISOC : 0);
|
|
|
|
INIT_DELAYED_WORK(&instance->status_checker, speedtch_check_status);
|
|
|
|
instance->status_checker.timer.function = speedtch_status_poll;
|
|
instance->status_checker.timer.data = (unsigned long)instance;
|
|
instance->last_status = 0xff;
|
|
instance->poll_delay = MIN_POLL_DELAY;
|
|
|
|
init_timer(&instance->resubmit_timer);
|
|
instance->resubmit_timer.function = speedtch_resubmit_int;
|
|
instance->resubmit_timer.data = (unsigned long)instance;
|
|
|
|
instance->int_urb = usb_alloc_urb(0, GFP_KERNEL);
|
|
|
|
if (instance->int_urb)
|
|
usb_fill_int_urb(instance->int_urb, usb_dev,
|
|
usb_rcvintpipe(usb_dev, ENDPOINT_INT),
|
|
instance->int_data, sizeof(instance->int_data),
|
|
speedtch_handle_int, instance, 50);
|
|
else
|
|
usb_dbg(usbatm, "%s: no memory for interrupt urb!\n", __func__);
|
|
|
|
/* check whether the modem already seems to be alive */
|
|
ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0),
|
|
0x12, 0xc0, 0x07, 0x00,
|
|
instance->scratch_buffer + OFFSET_7, SIZE_7, 500);
|
|
|
|
usbatm->flags |= (ret == SIZE_7 ? UDSL_SKIP_HEAVY_INIT : 0);
|
|
|
|
usb_dbg(usbatm, "%s: firmware %s loaded\n", __func__, usbatm->flags & UDSL_SKIP_HEAVY_INIT ? "already" : "not");
|
|
|
|
if (!(usbatm->flags & UDSL_SKIP_HEAVY_INIT))
|
|
if ((ret = usb_reset_device(usb_dev)) < 0) {
|
|
usb_err(usbatm, "%s: device reset failed (%d)!\n", __func__, ret);
|
|
goto fail_free;
|
|
}
|
|
|
|
usbatm->driver_data = instance;
|
|
|
|
return 0;
|
|
|
|
fail_free:
|
|
usb_free_urb(instance->int_urb);
|
|
kfree(instance);
|
|
fail_release:
|
|
speedtch_release_interfaces(usb_dev, num_interfaces);
|
|
return ret;
|
|
}
|
|
|
|
static void speedtch_unbind(struct usbatm_data *usbatm, struct usb_interface *intf)
|
|
{
|
|
struct usb_device *usb_dev = interface_to_usbdev(intf);
|
|
struct speedtch_instance_data *instance = usbatm->driver_data;
|
|
|
|
usb_dbg(usbatm, "%s entered\n", __func__);
|
|
|
|
speedtch_release_interfaces(usb_dev, usb_dev->actconfig->desc.bNumInterfaces);
|
|
usb_free_urb(instance->int_urb);
|
|
kfree(instance);
|
|
}
|
|
|
|
|
|
/***********
|
|
** init **
|
|
***********/
|
|
|
|
static struct usbatm_driver speedtch_usbatm_driver = {
|
|
.driver_name = speedtch_driver_name,
|
|
.bind = speedtch_bind,
|
|
.heavy_init = speedtch_heavy_init,
|
|
.unbind = speedtch_unbind,
|
|
.atm_start = speedtch_atm_start,
|
|
.atm_stop = speedtch_atm_stop,
|
|
.bulk_in = ENDPOINT_BULK_DATA,
|
|
.bulk_out = ENDPOINT_BULK_DATA,
|
|
.isoc_in = ENDPOINT_ISOC_DATA
|
|
};
|
|
|
|
static int speedtch_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
|
|
{
|
|
return usbatm_usb_probe(intf, id, &speedtch_usbatm_driver);
|
|
}
|
|
|
|
static int __init speedtch_usb_init(void)
|
|
{
|
|
dbg("%s: driver version %s", __func__, DRIVER_VERSION);
|
|
|
|
return usb_register(&speedtch_usb_driver);
|
|
}
|
|
|
|
static void __exit speedtch_usb_cleanup(void)
|
|
{
|
|
dbg("%s", __func__);
|
|
|
|
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);
|