| /****************************************************************************** |
| * speedtch.c - Alcatel SpeedTouch USB xDSL modem driver |
| * |
| * Copyright (C) 2001, Alcatel |
| * Copyright (C) 2003, Duncan Sands |
| * Copyright (C) 2004, David Woodhouse |
| * |
| * Based on "modem_run.c", copyright (C) 2001, Benoit Papillault |
| * |
| * 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 <asm/page.h> |
| #include <linux/device.h> |
| #include <linux/errno.h> |
| #include <linux/firmware.h> |
| #include <linux/gfp.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/slab.h> |
| #include <linux/stat.h> |
| #include <linux/timer.h> |
| #include <linux/types.h> |
| #include <linux/usb_ch9.h> |
| #include <linux/workqueue.h> |
| |
| #include "usbatm.h" |
| |
| #define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <duncan.sands@free.fr>" |
| #define DRIVER_VERSION "1.10" |
| #define DRIVER_DESC "Alcatel SpeedTouch USB driver version " DRIVER_VERSION |
| |
| static const char speedtch_driver_name[] = "speedtch"; |
| |
| #define CTRL_TIMEOUT 2000 /* milliseconds */ |
| #define DATA_TIMEOUT 2000 /* milliseconds */ |
| |
| #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 SIZE_7 1 |
| #define SIZE_b 8 |
| #define SIZE_d 4 |
| #define SIZE_e 1 |
| #define SIZE_f 1 |
| |
| #define MIN_POLL_DELAY 5000 /* milliseconds */ |
| #define MAX_POLL_DELAY 60000 /* milliseconds */ |
| |
| #define RESUBMIT_DELAY 1000 /* milliseconds */ |
| |
| #define DEFAULT_BULK_ALTSETTING 1 |
| #define DEFAULT_ISOC_ALTSETTING 3 |
| #define DEFAULT_DL_512_FIRST 0 |
| #define DEFAULT_ENABLE_ISOC 0 |
| #define DEFAULT_SW_BUFFERING 0 |
| |
| static unsigned int altsetting = 0; /* zero means: use the default */ |
| static int dl_512_first = DEFAULT_DL_512_FIRST; |
| static int enable_isoc = DEFAULT_ENABLE_ISOC; |
| static int sw_buffering = DEFAULT_SW_BUFFERING; |
| |
| #define DEFAULT_B_MAX_DSL 8128 |
| #define DEFAULT_MODEM_MODE 11 |
| #define MODEM_OPTION_LENGTH 16 |
| static const unsigned char DEFAULT_MODEM_OPTION[MODEM_OPTION_LENGTH] = { |
| 0x10, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 |
| }; |
| |
| static unsigned int BMaxDSL = DEFAULT_B_MAX_DSL; |
| static unsigned char ModemMode = DEFAULT_MODEM_MODE; |
| static unsigned char ModemOption[MODEM_OPTION_LENGTH]; |
| static int num_ModemOption; |
| |
| module_param(altsetting, uint, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(altsetting, |
| "Alternative setting for data interface (bulk_default: " |
| __MODULE_STRING(DEFAULT_BULK_ALTSETTING) "; isoc_default: " |
| __MODULE_STRING(DEFAULT_ISOC_ALTSETTING) ")"); |
| |
| module_param(dl_512_first, bool, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(dl_512_first, |
| "Read 512 bytes before sending firmware (default: " |
| __MODULE_STRING(DEFAULT_DL_512_FIRST) ")"); |
| |
| module_param(enable_isoc, bool, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(enable_isoc, |
| "Use isochronous transfers if available (default: " |
| __MODULE_STRING(DEFAULT_ENABLE_ISOC) ")"); |
| |
| module_param(sw_buffering, bool, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(sw_buffering, |
| "Enable software buffering (default: " |
| __MODULE_STRING(DEFAULT_SW_BUFFERING) ")"); |
| |
| module_param(BMaxDSL, uint, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(BMaxDSL, |
| "default: " __MODULE_STRING(DEFAULT_B_MAX_DSL)); |
| |
| module_param(ModemMode, byte, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(ModemMode, |
| "default: " __MODULE_STRING(DEFAULT_MODEM_MODE)); |
| |
| module_param_array(ModemOption, byte, &num_ModemOption, S_IRUGO); |
| MODULE_PARM_DESC(ModemOption, "default: 0x10,0x00,0x00,0x00,0x20"); |
| |
| #define INTERFACE_DATA 1 |
| #define ENDPOINT_INT 0x81 |
| #define ENDPOINT_BULK_DATA 0x07 |
| #define ENDPOINT_ISOC_DATA 0x07 |
| #define ENDPOINT_FIRMWARE 0x05 |
| |
| #define hex2int(c) ( (c >= '0') && (c <= '9') ? (c - '0') : ((c & 0xf) + 9) ) |
| |
| struct speedtch_params { |
| unsigned int altsetting; |
| unsigned int BMaxDSL; |
| unsigned char ModemMode; |
| unsigned char ModemOption[MODEM_OPTION_LENGTH]; |
| }; |
| |
| struct speedtch_instance_data { |
| struct usbatm_data *usbatm; |
| |
| struct speedtch_params params; /* set in probe, constant afterwards */ |
| |
| struct delayed_work status_checker; |
| |
| unsigned char last_status; |
| |
| int poll_delay; /* milliseconds */ |
| |
| struct timer_list resubmit_timer; |
| struct urb *int_urb; |
| unsigned char int_data[16]; |
| |
| unsigned char scratch_buffer[16]; |
| }; |
| |
| /*************** |
| ** firmware ** |
| ***************/ |
| |
| static void speedtch_set_swbuff(struct speedtch_instance_data *instance, int state) |
| { |
| struct usbatm_data *usbatm = instance->usbatm; |
| struct usb_device *usb_dev = usbatm->usb_dev; |
| int ret; |
| |
| ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
| 0x32, 0x40, state ? 0x01 : 0x00, 0x00, NULL, 0, CTRL_TIMEOUT); |
| if (ret < 0) |
| usb_warn(usbatm, |
| "%sabling SW buffering: usb_control_msg returned %d\n", |
| state ? "En" : "Dis", ret); |
| else |
| dbg("speedtch_set_swbuff: %sbled SW buffering", state ? "En" : "Dis"); |
| } |
| |
| static void speedtch_test_sequence(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; |
| |
| /* URB 147 */ |
| buf[0] = 0x1c; |
| buf[1] = 0x50; |
| ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
| 0x01, 0x40, 0x0b, 0x00, buf, 2, CTRL_TIMEOUT); |
| if (ret < 0) |
| usb_warn(usbatm, "%s failed on URB147: %d\n", __func__, ret); |
| |
| /* URB 148 */ |
| buf[0] = 0x32; |
| buf[1] = 0x00; |
| ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
| 0x01, 0x40, 0x02, 0x00, buf, 2, CTRL_TIMEOUT); |
| if (ret < 0) |
| usb_warn(usbatm, "%s failed on URB148: %d\n", __func__, ret); |
| |
| /* URB 149 */ |
| buf[0] = 0x01; |
| buf[1] = 0x00; |
| buf[2] = 0x01; |
| ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
| 0x01, 0x40, 0x03, 0x00, buf, 3, CTRL_TIMEOUT); |
| if (ret < 0) |
| usb_warn(usbatm, "%s failed on URB149: %d\n", __func__, ret); |
| |
| /* URB 150 */ |
| buf[0] = 0x01; |
| buf[1] = 0x00; |
| buf[2] = 0x01; |
| ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
| 0x01, 0x40, 0x04, 0x00, buf, 3, CTRL_TIMEOUT); |
| if (ret < 0) |
| usb_warn(usbatm, "%s failed on URB150: %d\n", __func__, ret); |
| |
| /* Extra initialisation in recent drivers - gives higher speeds */ |
| |
| /* URBext1 */ |
| buf[0] = instance->params.ModemMode; |
| ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
| 0x01, 0x40, 0x11, 0x00, buf, 1, CTRL_TIMEOUT); |
| if (ret < 0) |
| usb_warn(usbatm, "%s failed on URBext1: %d\n", __func__, ret); |
| |
| /* URBext2 */ |
| /* This seems to be the one which actually triggers the higher sync |
| rate -- it does require the new firmware too, although it works OK |
| with older firmware */ |
| ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
| 0x01, 0x40, 0x14, 0x00, |
| instance->params.ModemOption, |
| MODEM_OPTION_LENGTH, CTRL_TIMEOUT); |
| if (ret < 0) |
| usb_warn(usbatm, "%s failed on URBext2: %d\n", __func__, ret); |
| |
| /* URBext3 */ |
| buf[0] = instance->params.BMaxDSL & 0xff; |
| buf[1] = instance->params.BMaxDSL >> 8; |
| ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
| 0x01, 0x40, 0x12, 0x00, buf, 2, CTRL_TIMEOUT); |
| if (ret < 0) |
| usb_warn(usbatm, "%s failed on URBext3: %d\n", __func__, ret); |
| } |
| |
| static int speedtch_upload_firmware(struct speedtch_instance_data *instance, |
| const struct firmware *fw1, |
| const struct firmware *fw2) |
| { |
| unsigned char *buffer; |
| struct usbatm_data *usbatm = instance->usbatm; |
| struct usb_interface *intf; |
| struct usb_device *usb_dev = usbatm->usb_dev; |
| int actual_length; |
| int ret = 0; |
| int offset; |
| |
| usb_dbg(usbatm, "%s entered\n", __func__); |
| |
| if (!(buffer = (unsigned char *)__get_free_page(GFP_KERNEL))) { |
| ret = -ENOMEM; |
| usb_dbg(usbatm, "%s: no memory for buffer!\n", __func__); |
| goto out; |
| } |
| |
| if (!(intf = usb_ifnum_to_if(usb_dev, 2))) { |
| ret = -ENODEV; |
| usb_dbg(usbatm, "%s: interface not found!\n", __func__); |
| goto out_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, ENDPOINT_FIRMWARE), |
| buffer, 0x200, &actual_length, 2000); |
| |
| if (ret < 0 && ret != -ETIMEDOUT) |
| usb_warn(usbatm, "%s: read BLOCK0 from modem failed (%d)!\n", __func__, ret); |
| else |
| usb_dbg(usbatm, "%s: BLOCK0 downloaded (%d bytes)\n", __func__, 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, ENDPOINT_FIRMWARE), |
| buffer, thislen, &actual_length, DATA_TIMEOUT); |
| |
| if (ret < 0) { |
| usb_err(usbatm, "%s: write BLOCK1 to modem failed (%d)!\n", __func__, ret); |
| goto out_free; |
| } |
| usb_dbg(usbatm, "%s: BLOCK1 uploaded (%zu bytes)\n", __func__, fw1->size); |
| } |
| |
| /* USB led blinking green, ADSL led off */ |
| |
| /* URB 11 */ |
| ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), |
| buffer, 0x200, &actual_length, DATA_TIMEOUT); |
| |
| if (ret < 0) { |
| usb_err(usbatm, "%s: read BLOCK2 from modem failed (%d)!\n", __func__, ret); |
| goto out_free; |
| } |
| usb_dbg(usbatm, "%s: BLOCK2 downloaded (%d bytes)\n", __func__, 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, ENDPOINT_FIRMWARE), |
| buffer, thislen, &actual_length, DATA_TIMEOUT); |
| |
| if (ret < 0) { |
| usb_err(usbatm, "%s: write BLOCK3 to modem failed (%d)!\n", __func__, ret); |
| goto out_free; |
| } |
| } |
| usb_dbg(usbatm, "%s: BLOCK3 uploaded (%zu bytes)\n", __func__, fw2->size); |
| |
| /* USB led static green, ADSL led static red */ |
| |
| /* URB 142 */ |
| ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), |
| buffer, 0x200, &actual_length, DATA_TIMEOUT); |
| |
| if (ret < 0) { |
| usb_err(usbatm, "%s: read BLOCK4 from modem failed (%d)!\n", __func__, ret); |
| goto out_free; |
| } |
| |
| /* success */ |
| usb_dbg(usbatm, "%s: BLOCK4 downloaded (%d bytes)\n", __func__, actual_length); |
| |
| /* Delay to allow firmware to start up. We can do this here |
| because we're in our own kernel thread anyway. */ |
| msleep_interruptible(1000); |
| |
| if ((ret = usb_set_interface(usb_dev, INTERFACE_DATA, instance->params.altsetting)) < 0) { |
| usb_err(usbatm, "%s: setting interface to %d failed (%d)!\n", __func__, instance->params.altsetting, ret); |
| goto out_free; |
| } |
| |
| /* 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); |
| |
| ret = 0; |
| |
| out_free: |
| free_page((unsigned long)buffer); |
| out: |
| return ret; |
| } |
| |
| static int speedtch_find_firmware(struct usbatm_data *usbatm, struct usb_interface *intf, |
| int phase, const struct firmware **fw_p) |
| { |
| struct device *dev = &intf->dev; |
| const u16 bcdDevice = le16_to_cpu(interface_to_usbdev(intf)->descriptor.bcdDevice); |
| const u8 major_revision = bcdDevice >> 8; |
| const u8 minor_revision = bcdDevice & 0xff; |
| char buf[24]; |
| |
| sprintf(buf, "speedtch-%d.bin.%x.%02x", phase, major_revision, minor_revision); |
| usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf); |
| |
| if (request_firmware(fw_p, buf, dev)) { |
| sprintf(buf, "speedtch-%d.bin.%x", phase, major_revision); |
| usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf); |
| |
| if (request_firmware(fw_p, buf, dev)) { |
| sprintf(buf, "speedtch-%d.bin", phase); |
| usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf); |
| |
| if (request_firmware(fw_p, buf, dev)) { |
| usb_err(usbatm, "%s: no stage %d firmware found!\n", __func__, phase); |
| return -ENOENT; |
| } |
| } |
| } |
| |
| usb_info(usbatm, "found stage %d firmware %s\n", phase, buf); |
| |
| return 0; |
| } |
| |
| static int speedtch_heavy_init(struct usbatm_data *usbatm, struct usb_interface *intf) |
| { |
| const struct firmware *fw1, *fw2; |
| struct speedtch_instance_data *instance = usbatm->driver_data; |
| int ret; |
| |
| if ((ret = speedtch_find_firmware(usbatm, intf, 1, &fw1)) < 0) |
| return ret; |
| |
| if ((ret = speedtch_find_firmware(usbatm, intf, 2, &fw2)) < 0) { |
| release_firmware(fw1); |
| return ret; |
| } |
| |
| if ((ret = speedtch_upload_firmware(instance, fw1, fw2)) < 0) |
| usb_err(usbatm, "%s: firmware upload failed (%d)!\n", __func__, ret); |
| |
| release_firmware(fw2); |
| release_firmware(fw1); |
| |
| return ret; |
| } |
| |
| |
| /********** |
| ** ATM ** |
| **********/ |
| |
| static int speedtch_read_status(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; |
| |
| memset(buf, 0, 16); |
| |
| ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
| 0x12, 0xc0, 0x07, 0x00, buf + OFFSET_7, SIZE_7, |
| CTRL_TIMEOUT); |
| if (ret < 0) { |
| atm_dbg(usbatm, "%s: MSG 7 failed\n", __func__); |
| return ret; |
| } |
| |
| ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
| 0x12, 0xc0, 0x0b, 0x00, buf + OFFSET_b, SIZE_b, |
| CTRL_TIMEOUT); |
| if (ret < 0) { |
| atm_dbg(usbatm, "%s: MSG B failed\n", __func__); |
| return ret; |
| } |
| |
| ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
| 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 ret = int_urb->status; |
| |
| /* 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 (ret < 0) { |
| atm_dbg(usbatm, "%s: nonzero urb status %d!\n", __func__, ret); |
| 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(); |
| } |
| |
| |
| /********** |
| ** 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, |
| .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; |
| int i; |
| |
| 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 = (endpoint_desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == |
| USB_ENDPOINT_XFER_ISOC; |
| 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); |