[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/usb/atm/speedtch.c b/src/kernel/linux/v4.14/drivers/usb/atm/speedtch.c
new file mode 100644
index 0000000..3676adb
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/usb/atm/speedtch.c
@@ -0,0 +1,963 @@
+/******************************************************************************
+ * 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/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_DESC "Alcatel SpeedTouch USB driver"
+
+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 bool dl_512_first = DEFAULT_DL_512_FIRST;
+static bool enable_isoc = DEFAULT_ENABLE_ISOC;
+static bool 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 unsigned 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
+
+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 timer_list status_check_timer;
+ struct work_struct status_check_work;
+
+ 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
+ usb_dbg(usbatm, "speedtch_set_swbuff: %sbled SW buffering\n", 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_device *usb_dev = usbatm->usb_dev;
+ int actual_length;
+ int ret = 0;
+ int offset;
+
+ usb_dbg(usbatm, "%s entered\n", __func__);
+
+ buffer = (unsigned char *)__get_free_page(GFP_KERNEL);
+ if (!buffer) {
+ ret = -ENOMEM;
+ usb_dbg(usbatm, "%s: no memory for buffer!\n", __func__);
+ goto out;
+ }
+
+ if (!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_check_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_change(atm_dev, 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_change(atm_dev, ATM_PHY_SIG_UNKNOWN);
+ atm_info(usbatm, "ADSL line is blocked?\n");
+ break;
+
+ case 0x10:
+ atm_dev_signal_change(atm_dev, 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_change(atm_dev, 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_change(atm_dev, 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_work(&instance->status_check_work);
+
+ /* The following check is racy, but the race is harmless */
+ if (instance->poll_delay < MAX_POLL_DELAY)
+ mod_timer(&instance->status_check_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_work(&instance->status_check_work);
+ 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_check_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;
+ }
+
+ int_urb = instance->int_urb;
+ if (int_urb) {
+ ret = usb_submit_urb(int_urb, GFP_ATOMIC);
+ schedule_work(&instance->status_check_work);
+ if (ret < 0) {
+ atm_dbg(usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret);
+ goto fail;
+ }
+ }
+
+ return;
+
+fail:
+ int_urb = instance->int_urb;
+ if (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] = (hex_to_bin(mac_str[i * 2]) << 4) +
+ hex_to_bin(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_check_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_check_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_work(&instance->status_check_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 const 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++) {
+ cur_intf = usb_ifnum_to_if(usb_dev, i);
+ if (cur_intf) {
+ 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;
+ }
+
+ data_intf = usb_ifnum_to_if(usb_dev, INTERFACE_DATA);
+ if (!data_intf) {
+ 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) {
+ 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_WORK(&instance->status_check_work, speedtch_check_status);
+ init_timer(&instance->status_check_timer);
+
+ instance->status_check_timer.function = speedtch_status_poll;
+ instance->status_check_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, 16);
+ 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);
+}
+
+module_usb_driver(speedtch_usb_driver);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");