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-rw-r--r--drivers/usb/atm/Kconfig30
-rw-r--r--drivers/usb/atm/Makefile7
-rw-r--r--drivers/usb/atm/speedtch.c847
-rw-r--r--drivers/usb/atm/usb_atm.c1188
-rw-r--r--drivers/usb/atm/usb_atm.h176
5 files changed, 2248 insertions, 0 deletions
diff --git a/drivers/usb/atm/Kconfig b/drivers/usb/atm/Kconfig
new file mode 100644
index 00000000000..0d9f5379b8c
--- /dev/null
+++ b/drivers/usb/atm/Kconfig
@@ -0,0 +1,30 @@
+#
+# USB ATM driver configuration
+#
+comment "USB ATM/DSL drivers"
+ depends on USB
+
+config USB_ATM
+ tristate "Generic USB ATM/DSL core I/O support"
+ depends on USB && ATM
+ select CRC32
+ default n
+ help
+ This provides a library which is used for packet I/O by USB DSL
+ modems, such as the SpeedTouch driver below.
+
+ To compile this driver as a module, choose M here: the
+ module will be called usb_atm.
+
+config USB_SPEEDTOUCH
+ tristate "Alcatel Speedtouch USB support"
+ depends on USB && ATM
+ select USB_ATM
+ help
+ Say Y here if you have an Alcatel SpeedTouch USB or SpeedTouch 330
+ modem. In order to use your modem you will need to install the
+ two parts of the firmware, extracted by the user space tools; see
+ <http://www.linux-usb.org/SpeedTouch/> for details.
+
+ To compile this driver as a module, choose M here: the
+ module will be called speedtch.
diff --git a/drivers/usb/atm/Makefile b/drivers/usb/atm/Makefile
new file mode 100644
index 00000000000..9213b8b9758
--- /dev/null
+++ b/drivers/usb/atm/Makefile
@@ -0,0 +1,7 @@
+#
+# Makefile for the rest of the USB drivers
+# (the ones that don't fit into any other categories)
+#
+
+obj-$(CONFIG_USB_ATM) += usb_atm.o
+obj-$(CONFIG_USB_SPEEDTOUCH) += speedtch.o
diff --git a/drivers/usb/atm/speedtch.c b/drivers/usb/atm/speedtch.c
new file mode 100644
index 00000000000..233f9229bad
--- /dev/null
+++ b/drivers/usb/atm/speedtch.c
@@ -0,0 +1,847 @@
+/******************************************************************************
+ * speedtch.c - Alcatel SpeedTouch USB xDSL modem driver
+ *
+ * Copyright (C) 2001, Alcatel
+ * Copyright (C) 2003, Duncan Sands
+ * Copyright (C) 2004, David Woodhouse
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ ******************************************************************************/
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/gfp.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/list.h>
+#include <asm/processor.h>
+#include <asm/uaccess.h>
+#include <linux/smp_lock.h>
+#include <linux/interrupt.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/crc32.h>
+#include <linux/init.h>
+#include <linux/firmware.h>
+
+#include "usb_atm.h"
+
+#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
+# define USE_FW_LOADER
+#endif
+
+#define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <duncan.sands@free.fr>"
+#define DRIVER_VERSION "1.8"
+#define DRIVER_DESC "Alcatel SpeedTouch USB driver version " DRIVER_VERSION
+
+static const char speedtch_driver_name[] = "speedtch";
+
+#define SPEEDTOUCH_VENDORID 0x06b9
+#define SPEEDTOUCH_PRODUCTID 0x4061
+
+/* Timeout in jiffies */
+#define CTRL_TIMEOUT 2000
+#define DATA_TIMEOUT 2000
+
+#define OFFSET_7 0 /* size 1 */
+#define OFFSET_b 1 /* size 8 */
+#define OFFSET_d 9 /* size 4 */
+#define OFFSET_e 13 /* size 1 */
+#define OFFSET_f 14 /* size 1 */
+#define TOTAL 15
+
+#define SIZE_7 1
+#define SIZE_b 8
+#define SIZE_d 4
+#define SIZE_e 1
+#define SIZE_f 1
+
+static int dl_512_first = 0;
+static int sw_buffering = 0;
+
+module_param(dl_512_first, bool, 0444);
+MODULE_PARM_DESC(dl_512_first, "Read 512 bytes before sending firmware");
+
+module_param(sw_buffering, uint, 0444);
+MODULE_PARM_DESC(sw_buffering, "Enable software buffering");
+
+#define UDSL_IOCTL_LINE_UP 1
+#define UDSL_IOCTL_LINE_DOWN 2
+
+#define SPEEDTCH_ENDPOINT_INT 0x81
+#define SPEEDTCH_ENDPOINT_DATA 0x07
+#define SPEEDTCH_ENDPOINT_FIRMWARE 0x05
+
+#define hex2int(c) ( (c >= '0') && (c <= '9') ? (c - '0') : ((c & 0xf) + 9) )
+
+static struct usb_device_id speedtch_usb_ids[] = {
+ {USB_DEVICE(SPEEDTOUCH_VENDORID, SPEEDTOUCH_PRODUCTID)},
+ {}
+};
+
+MODULE_DEVICE_TABLE(usb, speedtch_usb_ids);
+
+struct speedtch_instance_data {
+ struct udsl_instance_data u;
+
+ /* Status */
+ struct urb *int_urb;
+ unsigned char int_data[16];
+ struct work_struct poll_work;
+ struct timer_list poll_timer;
+};
+/* USB */
+
+static int speedtch_usb_probe(struct usb_interface *intf,
+ const struct usb_device_id *id);
+static void speedtch_usb_disconnect(struct usb_interface *intf);
+static int speedtch_usb_ioctl(struct usb_interface *intf, unsigned int code,
+ void *user_data);
+static void speedtch_handle_int(struct urb *urb, struct pt_regs *regs);
+static void speedtch_poll_status(struct speedtch_instance_data *instance);
+
+static struct usb_driver speedtch_usb_driver = {
+ .owner = THIS_MODULE,
+ .name = speedtch_driver_name,
+ .probe = speedtch_usb_probe,
+ .disconnect = speedtch_usb_disconnect,
+ .ioctl = speedtch_usb_ioctl,
+ .id_table = speedtch_usb_ids,
+};
+
+/***************
+** firmware **
+***************/
+
+static void speedtch_got_firmware(struct speedtch_instance_data *instance,
+ int got_it)
+{
+ int err;
+ struct usb_interface *intf;
+
+ down(&instance->u.serialize); /* vs self, speedtch_firmware_start */
+ if (instance->u.status == UDSL_LOADED_FIRMWARE)
+ goto out;
+ if (!got_it) {
+ instance->u.status = UDSL_NO_FIRMWARE;
+ goto out;
+ }
+ if ((err = usb_set_interface(instance->u.usb_dev, 1, 1)) < 0) {
+ dbg("speedtch_got_firmware: usb_set_interface returned %d!", err);
+ instance->u.status = UDSL_NO_FIRMWARE;
+ goto out;
+ }
+
+ /* Set up interrupt endpoint */
+ intf = usb_ifnum_to_if(instance->u.usb_dev, 0);
+ if (intf && !usb_driver_claim_interface(&speedtch_usb_driver, intf, NULL)) {
+
+ instance->int_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (instance->int_urb) {
+
+ usb_fill_int_urb(instance->int_urb, instance->u.usb_dev,
+ usb_rcvintpipe(instance->u.usb_dev, SPEEDTCH_ENDPOINT_INT),
+ instance->int_data,
+ sizeof(instance->int_data),
+ speedtch_handle_int, instance, 50);
+ err = usb_submit_urb(instance->int_urb, GFP_KERNEL);
+ if (err) {
+ /* Doesn't matter; we'll poll anyway */
+ dbg("speedtch_got_firmware: Submission of interrupt URB failed %d", err);
+ usb_free_urb(instance->int_urb);
+ instance->int_urb = NULL;
+ usb_driver_release_interface(&speedtch_usb_driver, intf);
+ }
+ }
+ }
+ /* Start status polling */
+ mod_timer(&instance->poll_timer, jiffies + (1 * HZ));
+
+ instance->u.status = UDSL_LOADED_FIRMWARE;
+ tasklet_schedule(&instance->u.receive_tasklet);
+ out:
+ up(&instance->u.serialize);
+ wake_up_interruptible(&instance->u.firmware_waiters);
+}
+
+static int speedtch_set_swbuff(struct speedtch_instance_data *instance,
+ int state)
+{
+ struct usb_device *dev = instance->u.usb_dev;
+ int ret;
+
+ ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ 0x32, 0x40, state ? 0x01 : 0x00,
+ 0x00, NULL, 0, 100);
+ if (ret < 0) {
+ printk("Warning: %sabling SW buffering: usb_control_msg returned %d\n",
+ state ? "En" : "Dis", ret);
+ return ret;
+ }
+
+ dbg("speedtch_set_swbuff: %sbled SW buffering", state ? "En" : "Dis");
+ return 0;
+}
+
+static void speedtch_test_sequence(struct speedtch_instance_data *instance)
+{
+ struct usb_device *dev = instance->u.usb_dev;
+ unsigned char buf[10];
+ int ret;
+
+ /* URB 147 */
+ buf[0] = 0x1c;
+ buf[1] = 0x50;
+ ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ 0x01, 0x40, 0x0b, 0x00, buf, 2, 100);
+ if (ret < 0)
+ printk(KERN_WARNING "%s failed on URB147: %d\n", __func__, ret);
+
+ /* URB 148 */
+ buf[0] = 0x32;
+ buf[1] = 0x00;
+ ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ 0x01, 0x40, 0x02, 0x00, buf, 2, 100);
+ if (ret < 0)
+ printk(KERN_WARNING "%s failed on URB148: %d\n", __func__, ret);
+
+ /* URB 149 */
+ buf[0] = 0x01;
+ buf[1] = 0x00;
+ buf[2] = 0x01;
+ ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ 0x01, 0x40, 0x03, 0x00, buf, 3, 100);
+ if (ret < 0)
+ printk(KERN_WARNING "%s failed on URB149: %d\n", __func__, ret);
+
+ /* URB 150 */
+ buf[0] = 0x01;
+ buf[1] = 0x00;
+ buf[2] = 0x01;
+ ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
+ 0x01, 0x40, 0x04, 0x00, buf, 3, 100);
+ if (ret < 0)
+ printk(KERN_WARNING "%s failed on URB150: %d\n", __func__, ret);
+}
+
+static int speedtch_start_synchro(struct speedtch_instance_data *instance)
+{
+ struct usb_device *dev = instance->u.usb_dev;
+ unsigned char buf[2];
+ int ret;
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ 0x12, 0xc0, 0x04, 0x00,
+ buf, sizeof(buf), CTRL_TIMEOUT);
+ if (ret < 0) {
+ printk(KERN_WARNING "SpeedTouch: Failed to start ADSL synchronisation: %d\n", ret);
+ return ret;
+ }
+
+ dbg("speedtch_start_synchro: modem prodded. %d Bytes returned: %02x %02x", ret, buf[0], buf[1]);
+ return 0;
+}
+
+static void speedtch_handle_int(struct urb *urb, struct pt_regs *regs)
+{
+ struct speedtch_instance_data *instance = urb->context;
+ unsigned int count = urb->actual_length;
+ int ret;
+
+ /* The magic interrupt for "up state" */
+ const static unsigned char up_int[6] = { 0xa1, 0x00, 0x01, 0x00, 0x00, 0x00 };
+ /* The magic interrupt for "down state" */
+ const static unsigned char down_int[6] = { 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated; clean up */
+ dbg("%s - urb shutting down with status: %d", __func__, urb->status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d", __func__, urb->status);
+ goto exit;
+ }
+
+ if (count < 6) {
+ dbg("%s - int packet too short", __func__);
+ goto exit;
+ }
+
+ if (!memcmp(up_int, instance->int_data, 6)) {
+ del_timer(&instance->poll_timer);
+ printk(KERN_NOTICE "DSL line goes up\n");
+ } else if (!memcmp(down_int, instance->int_data, 6)) {
+ printk(KERN_NOTICE "DSL line goes down\n");
+ } else {
+ int i;
+
+ printk(KERN_DEBUG "Unknown interrupt packet of %d bytes:", count);
+ for (i = 0; i < count; i++)
+ printk(" %02x", instance->int_data[i]);
+ printk("\n");
+ }
+ schedule_work(&instance->poll_work);
+
+ exit:
+ rmb();
+ if (!instance->int_urb)
+ return;
+
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret)
+ err("%s - usb_submit_urb failed with result %d", __func__, ret);
+}
+
+static int speedtch_get_status(struct speedtch_instance_data *instance,
+ unsigned char *buf)
+{
+ struct usb_device *dev = instance->u.usb_dev;
+ int ret;
+
+ memset(buf, 0, TOTAL);
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ 0x12, 0xc0, 0x07, 0x00, buf + OFFSET_7, SIZE_7,
+ CTRL_TIMEOUT);
+ if (ret < 0) {
+ dbg("MSG 7 failed");
+ return ret;
+ }
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ 0x12, 0xc0, 0x0b, 0x00, buf + OFFSET_b, SIZE_b,
+ CTRL_TIMEOUT);
+ if (ret < 0) {
+ dbg("MSG B failed");
+ return ret;
+ }
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ 0x12, 0xc0, 0x0d, 0x00, buf + OFFSET_d, SIZE_d,
+ CTRL_TIMEOUT);
+ if (ret < 0) {
+ dbg("MSG D failed");
+ return ret;
+ }
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ 0x01, 0xc0, 0x0e, 0x00, buf + OFFSET_e, SIZE_e,
+ CTRL_TIMEOUT);
+ if (ret < 0) {
+ dbg("MSG E failed");
+ return ret;
+ }
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ 0x01, 0xc0, 0x0f, 0x00, buf + OFFSET_f, SIZE_f,
+ CTRL_TIMEOUT);
+ if (ret < 0) {
+ dbg("MSG F failed");
+ return ret;
+ }
+
+ return 0;
+}
+
+static void speedtch_poll_status(struct speedtch_instance_data *instance)
+{
+ unsigned char buf[TOTAL];
+ int ret;
+
+ ret = speedtch_get_status(instance, buf);
+ if (ret) {
+ printk(KERN_WARNING
+ "SpeedTouch: Error %d fetching device status\n", ret);
+ return;
+ }
+
+ dbg("Line state %02x", buf[OFFSET_7]);
+
+ switch (buf[OFFSET_7]) {
+ case 0:
+ if (instance->u.atm_dev->signal != ATM_PHY_SIG_LOST) {
+ instance->u.atm_dev->signal = ATM_PHY_SIG_LOST;
+ printk(KERN_NOTICE "ADSL line is down\n");
+ }
+ break;
+
+ case 0x08:
+ if (instance->u.atm_dev->signal != ATM_PHY_SIG_UNKNOWN) {
+ instance->u.atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
+ printk(KERN_NOTICE "ADSL line is blocked?\n");
+ }
+ break;
+
+ case 0x10:
+ if (instance->u.atm_dev->signal != ATM_PHY_SIG_LOST) {
+ instance->u.atm_dev->signal = ATM_PHY_SIG_LOST;
+ printk(KERN_NOTICE "ADSL line is synchronising\n");
+ }
+ break;
+
+ case 0x20:
+ if (instance->u.atm_dev->signal != ATM_PHY_SIG_FOUND) {
+ int down_speed = buf[OFFSET_b] | (buf[OFFSET_b + 1] << 8)
+ | (buf[OFFSET_b + 2] << 16) | (buf[OFFSET_b + 3] << 24);
+ int up_speed = buf[OFFSET_b + 4] | (buf[OFFSET_b + 5] << 8)
+ | (buf[OFFSET_b + 6] << 16) | (buf[OFFSET_b + 7] << 24);
+
+ if (!(down_speed & 0x0000ffff) &&
+ !(up_speed & 0x0000ffff)) {
+ down_speed >>= 16;
+ up_speed >>= 16;
+ }
+ instance->u.atm_dev->link_rate = down_speed * 1000 / 424;
+ instance->u.atm_dev->signal = ATM_PHY_SIG_FOUND;
+
+ printk(KERN_NOTICE
+ "ADSL line is up (%d Kib/s down | %d Kib/s up)\n",
+ down_speed, up_speed);
+ }
+ break;
+
+ default:
+ if (instance->u.atm_dev->signal != ATM_PHY_SIG_UNKNOWN) {
+ instance->u.atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
+ printk(KERN_NOTICE "Unknown line state %02x\n", buf[OFFSET_7]);
+ }
+ break;
+ }
+}
+
+static void speedtch_timer_poll(unsigned long data)
+{
+ struct speedtch_instance_data *instance = (void *)data;
+
+ schedule_work(&instance->poll_work);
+ mod_timer(&instance->poll_timer, jiffies + (5 * HZ));
+}
+
+#ifdef USE_FW_LOADER
+static void speedtch_upload_firmware(struct speedtch_instance_data *instance,
+ const struct firmware *fw1,
+ const struct firmware *fw2)
+{
+ unsigned char *buffer;
+ struct usb_device *usb_dev = instance->u.usb_dev;
+ struct usb_interface *intf;
+ int actual_length, ret;
+ int offset;
+
+ dbg("speedtch_upload_firmware");
+
+ if (!(intf = usb_ifnum_to_if(usb_dev, 2))) {
+ dbg("speedtch_upload_firmware: interface not found!");
+ goto fail;
+ }
+
+ if (!(buffer = (unsigned char *)__get_free_page(GFP_KERNEL))) {
+ dbg("speedtch_upload_firmware: no memory for buffer!");
+ goto fail;
+ }
+
+ /* A user-space firmware loader may already have claimed interface #2 */
+ if ((ret =
+ usb_driver_claim_interface(&speedtch_usb_driver, intf, NULL)) < 0) {
+ dbg("speedtch_upload_firmware: interface in use (%d)!", ret);
+ goto fail_free;
+ }
+
+ /* URB 7 */
+ if (dl_512_first) { /* some modems need a read before writing the firmware */
+ ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
+ buffer, 0x200, &actual_length, 2000);
+
+ if (ret < 0 && ret != -ETIMEDOUT)
+ dbg("speedtch_upload_firmware: read BLOCK0 from modem failed (%d)!", ret);
+ else
+ dbg("speedtch_upload_firmware: BLOCK0 downloaded (%d bytes)", ret);
+ }
+
+ /* URB 8 : both leds are static green */
+ for (offset = 0; offset < fw1->size; offset += PAGE_SIZE) {
+ int thislen = min_t(int, PAGE_SIZE, fw1->size - offset);
+ memcpy(buffer, fw1->data + offset, thislen);
+
+ ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
+ buffer, thislen, &actual_length, DATA_TIMEOUT);
+
+ if (ret < 0) {
+ dbg("speedtch_upload_firmware: write BLOCK1 to modem failed (%d)!", ret);
+ goto fail_release;
+ }
+ dbg("speedtch_upload_firmware: BLOCK1 uploaded (%zu bytes)", fw1->size);
+ }
+
+ /* USB led blinking green, ADSL led off */
+
+ /* URB 11 */
+ ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
+ buffer, 0x200, &actual_length, DATA_TIMEOUT);
+
+ if (ret < 0) {
+ dbg("speedtch_upload_firmware: read BLOCK2 from modem failed (%d)!", ret);
+ goto fail_release;
+ }
+ dbg("speedtch_upload_firmware: BLOCK2 downloaded (%d bytes)", actual_length);
+
+ /* URBs 12 to 139 - USB led blinking green, ADSL led off */
+ for (offset = 0; offset < fw2->size; offset += PAGE_SIZE) {
+ int thislen = min_t(int, PAGE_SIZE, fw2->size - offset);
+ memcpy(buffer, fw2->data + offset, thislen);
+
+ ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
+ buffer, thislen, &actual_length, DATA_TIMEOUT);
+
+ if (ret < 0) {
+ dbg("speedtch_upload_firmware: write BLOCK3 to modem failed (%d)!", ret);
+ goto fail_release;
+ }
+ }
+ dbg("speedtch_upload_firmware: BLOCK3 uploaded (%zu bytes)", fw2->size);
+
+ /* USB led static green, ADSL led static red */
+
+ /* URB 142 */
+ ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
+ buffer, 0x200, &actual_length, DATA_TIMEOUT);
+
+ if (ret < 0) {
+ dbg("speedtch_upload_firmware: read BLOCK4 from modem failed (%d)!", ret);
+ goto fail_release;
+ }
+
+ /* success */
+ dbg("speedtch_upload_firmware: BLOCK4 downloaded (%d bytes)", actual_length);
+
+ /* Delay to allow firmware to start up. We can do this here
+ because we're in our own kernel thread anyway. */
+ msleep(1000);
+
+ /* Enable software buffering, if requested */
+ if (sw_buffering)
+ speedtch_set_swbuff(instance, 1);
+
+ /* Magic spell; don't ask us what this does */
+ speedtch_test_sequence(instance);
+
+ /* Start modem synchronisation */
+ if (speedtch_start_synchro(instance))
+ dbg("speedtch_start_synchro: failed");
+
+ speedtch_got_firmware(instance, 1);
+
+ free_page((unsigned long)buffer);
+ return;
+
+ fail_release:
+ /* Only release interface #2 if uploading failed; we don't release it
+ we succeeded. This prevents the userspace tools from trying to load
+ the firmware themselves */
+ usb_driver_release_interface(&speedtch_usb_driver, intf);
+ fail_free:
+ free_page((unsigned long)buffer);
+ fail:
+ speedtch_got_firmware(instance, 0);
+}
+
+static int speedtch_find_firmware(struct speedtch_instance_data
+ *instance, int phase,
+ const struct firmware **fw_p)
+{
+ char buf[24];
+ const u16 bcdDevice = le16_to_cpu(instance->u.usb_dev->descriptor.bcdDevice);
+ const u8 major_revision = bcdDevice >> 8;
+ const u8 minor_revision = bcdDevice & 0xff;
+
+ sprintf(buf, "speedtch-%d.bin.%x.%02x", phase, major_revision, minor_revision);
+ dbg("speedtch_find_firmware: looking for %s", buf);
+
+ if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) {
+ sprintf(buf, "speedtch-%d.bin.%x", phase, major_revision);
+ dbg("speedtch_find_firmware: looking for %s", buf);
+
+ if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) {
+ sprintf(buf, "speedtch-%d.bin", phase);
+ dbg("speedtch_find_firmware: looking for %s", buf);
+
+ if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) {
+ dev_warn(&instance->u.usb_dev->dev, "no stage %d firmware found!", phase);
+ return -ENOENT;
+ }
+ }
+ }
+
+ dev_info(&instance->u.usb_dev->dev, "found stage %d firmware %s\n", phase, buf);
+
+ return 0;
+}
+
+static int speedtch_load_firmware(void *arg)
+{
+ const struct firmware *fw1, *fw2;
+ struct speedtch_instance_data *instance = arg;
+
+ BUG_ON(!instance);
+
+ daemonize("firmware/speedtch");
+
+ if (!speedtch_find_firmware(instance, 1, &fw1)) {
+ if (!speedtch_find_firmware(instance, 2, &fw2)) {
+ speedtch_upload_firmware(instance, fw1, fw2);
+ release_firmware(fw2);
+ }
+ release_firmware(fw1);
+ }
+
+ /* In case we failed, set state back to NO_FIRMWARE so that
+ another later attempt may work. Otherwise, we never actually
+ manage to recover if, for example, the firmware is on /usr and
+ we look for it too early. */
+ speedtch_got_firmware(instance, 0);
+
+ module_put(THIS_MODULE);
+ udsl_put_instance(&instance->u);
+ return 0;
+}
+#endif /* USE_FW_LOADER */
+
+static void speedtch_firmware_start(struct speedtch_instance_data *instance)
+{
+#ifdef USE_FW_LOADER
+ int ret;
+#endif
+
+ dbg("speedtch_firmware_start");
+
+ down(&instance->u.serialize); /* vs self, speedtch_got_firmware */
+
+ if (instance->u.status >= UDSL_LOADING_FIRMWARE) {
+ up(&instance->u.serialize);
+ return;
+ }
+
+ instance->u.status = UDSL_LOADING_FIRMWARE;
+ up(&instance->u.serialize);
+
+#ifdef USE_FW_LOADER
+ udsl_get_instance(&instance->u);
+ try_module_get(THIS_MODULE);
+
+ ret = kernel_thread(speedtch_load_firmware, instance,
+ CLONE_FS | CLONE_FILES);
+
+ if (ret >= 0)
+ return; /* OK */
+
+ dbg("speedtch_firmware_start: kernel_thread failed (%d)!", ret);
+
+ module_put(THIS_MODULE);
+ udsl_put_instance(&instance->u);
+ /* Just pretend it never happened... hope modem_run happens */
+#endif /* USE_FW_LOADER */
+
+ speedtch_got_firmware(instance, 0);
+}
+
+static int speedtch_firmware_wait(struct udsl_instance_data *instance)
+{
+ speedtch_firmware_start((void *)instance);
+
+ if (wait_event_interruptible(instance->firmware_waiters, instance->status != UDSL_LOADING_FIRMWARE) < 0)
+ return -ERESTARTSYS;
+
+ return (instance->status == UDSL_LOADED_FIRMWARE) ? 0 : -EAGAIN;
+}
+
+/**********
+** USB **
+**********/
+
+static int speedtch_usb_ioctl(struct usb_interface *intf, unsigned int code,
+ void *user_data)
+{
+ struct speedtch_instance_data *instance = usb_get_intfdata(intf);
+
+ dbg("speedtch_usb_ioctl entered");
+
+ if (!instance) {
+ dbg("speedtch_usb_ioctl: NULL instance!");
+ return -ENODEV;
+ }
+
+ switch (code) {
+ case UDSL_IOCTL_LINE_UP:
+ instance->u.atm_dev->signal = ATM_PHY_SIG_FOUND;
+ speedtch_got_firmware(instance, 1);
+ return (instance->u.status == UDSL_LOADED_FIRMWARE) ? 0 : -EIO;
+ case UDSL_IOCTL_LINE_DOWN:
+ instance->u.atm_dev->signal = ATM_PHY_SIG_LOST;
+ return 0;
+ default:
+ return -ENOTTY;
+ }
+}
+
+static int speedtch_usb_probe(struct usb_interface *intf,
+ const struct usb_device_id *id)
+{
+ struct usb_device *dev = interface_to_usbdev(intf);
+ int ifnum = intf->altsetting->desc.bInterfaceNumber;
+ struct speedtch_instance_data *instance;
+ unsigned char mac_str[13];
+ int ret, i;
+ char buf7[SIZE_7];
+
+ dbg("speedtch_usb_probe: trying device with vendor=0x%x, product=0x%x, ifnum %d",
+ le16_to_cpu(dev->descriptor.idVendor),
+ le16_to_cpu(dev->descriptor.idProduct), ifnum);
+
+ if ((dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) ||
+ (ifnum != 1))
+ return -ENODEV;
+
+ dbg("speedtch_usb_probe: device accepted");
+
+ /* instance init */
+ instance = kmalloc(sizeof(*instance), GFP_KERNEL);
+ if (!instance) {
+ dbg("speedtch_usb_probe: no memory for instance data!");
+ return -ENOMEM;
+ }
+
+ memset(instance, 0, sizeof(struct speedtch_instance_data));
+
+ if ((ret = usb_set_interface(dev, 0, 0)) < 0)
+ goto fail;
+
+ if ((ret = usb_set_interface(dev, 2, 0)) < 0)
+ goto fail;
+
+ instance->u.data_endpoint = SPEEDTCH_ENDPOINT_DATA;
+ instance->u.firmware_wait = speedtch_firmware_wait;
+ instance->u.driver_name = speedtch_driver_name;
+
+ ret = udsl_instance_setup(dev, &instance->u);
+ if (ret)
+ goto fail;
+
+ init_timer(&instance->poll_timer);
+ instance->poll_timer.function = speedtch_timer_poll;
+ instance->poll_timer.data = (unsigned long)instance;
+
+ INIT_WORK(&instance->poll_work, (void *)speedtch_poll_status, instance);
+
+ /* set MAC address, it is stored in the serial number */
+ memset(instance->u.atm_dev->esi, 0, sizeof(instance->u.atm_dev->esi));
+ if (usb_string(dev, dev->descriptor.iSerialNumber, mac_str, sizeof(mac_str)) == 12) {
+ for (i = 0; i < 6; i++)
+ instance->u.atm_dev->esi[i] =
+ (hex2int(mac_str[i * 2]) * 16) + (hex2int(mac_str[i * 2 + 1]));
+ }
+
+ /* First check whether the modem already seems to be alive */
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
+ 0x12, 0xc0, 0x07, 0x00, buf7, SIZE_7, 500);
+
+ if (ret == SIZE_7) {
+ dbg("firmware appears to be already loaded");
+ speedtch_got_firmware(instance, 1);
+ speedtch_poll_status(instance);
+ } else {
+ speedtch_firmware_start(instance);
+ }
+
+ usb_set_intfdata(intf, instance);
+
+ return 0;
+
+ fail:
+ kfree(instance);
+
+ return -ENOMEM;
+}
+
+static void speedtch_usb_disconnect(struct usb_interface *intf)
+{
+ struct speedtch_instance_data *instance = usb_get_intfdata(intf);
+
+ dbg("speedtch_usb_disconnect entered");
+
+ if (!instance) {
+ dbg("speedtch_usb_disconnect: NULL instance!");
+ return;
+ }
+
+/*QQ need to handle disconnects on interface #2 while uploading firmware */
+/*QQ and what about interface #1? */
+
+ if (instance->int_urb) {
+ struct urb *int_urb = instance->int_urb;
+ instance->int_urb = NULL;
+ wmb();
+ usb_unlink_urb(int_urb);
+ usb_free_urb(int_urb);
+ }
+
+ instance->int_data[0] = 1;
+ del_timer_sync(&instance->poll_timer);
+ wmb();
+ flush_scheduled_work();
+
+ udsl_instance_disconnect(&instance->u);
+
+ /* clean up */
+ usb_set_intfdata(intf, NULL);
+ udsl_put_instance(&instance->u);
+}
+
+/***********
+** init **
+***********/
+
+static int __init speedtch_usb_init(void)
+{
+ dbg("speedtch_usb_init: driver version " DRIVER_VERSION);
+
+ return usb_register(&speedtch_usb_driver);
+}
+
+static void __exit speedtch_usb_cleanup(void)
+{
+ dbg("speedtch_usb_cleanup entered");
+
+ usb_deregister(&speedtch_usb_driver);
+}
+
+module_init(speedtch_usb_init);
+module_exit(speedtch_usb_cleanup);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRIVER_VERSION);
diff --git a/drivers/usb/atm/usb_atm.c b/drivers/usb/atm/usb_atm.c
new file mode 100644
index 00000000000..a4cd4476d49
--- /dev/null
+++ b/drivers/usb/atm/usb_atm.c
@@ -0,0 +1,1188 @@
+/******************************************************************************
+ * usb_atm.c - Generic USB xDSL driver core
+ *
+ * Copyright (C) 2001, Alcatel
+ * Copyright (C) 2003, Duncan Sands, SolNegro, Josep Comas
+ * Copyright (C) 2004, David Woodhouse
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ ******************************************************************************/
+
+/*
+ * Written by Johan Verrept, maintained by Duncan Sands (duncan.sands@free.fr)
+ *
+ * 1.7+: - See the check-in logs
+ *
+ * 1.6: - No longer opens a connection if the firmware is not loaded
+ * - Added support for the speedtouch 330
+ * - Removed the limit on the number of devices
+ * - Module now autoloads on device plugin
+ * - Merged relevant parts of sarlib
+ * - Replaced the kernel thread with a tasklet
+ * - New packet transmission code
+ * - Changed proc file contents
+ * - Fixed all known SMP races
+ * - Many fixes and cleanups
+ * - Various fixes by Oliver Neukum (oliver@neukum.name)
+ *
+ * 1.5A: - Version for inclusion in 2.5 series kernel
+ * - Modifications by Richard Purdie (rpurdie@rpsys.net)
+ * - made compatible with kernel 2.5.6 onwards by changing
+ * udsl_usb_send_data_context->urb to a pointer and adding code
+ * to alloc and free it
+ * - remove_wait_queue() added to udsl_atm_processqueue_thread()
+ *
+ * 1.5: - fixed memory leak when atmsar_decode_aal5 returned NULL.
+ * (reported by stephen.robinson@zen.co.uk)
+ *
+ * 1.4: - changed the spin_lock() under interrupt to spin_lock_irqsave()
+ * - unlink all active send urbs of a vcc that is being closed.
+ *
+ * 1.3.1: - added the version number
+ *
+ * 1.3: - Added multiple send urb support
+ * - fixed memory leak and vcc->tx_inuse starvation bug
+ * when not enough memory left in vcc.
+ *
+ * 1.2: - Fixed race condition in udsl_usb_send_data()
+ * 1.1: - Turned off packet debugging
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/errno.h>
+#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <linux/wait.h>
+#include <linux/list.h>
+#include <asm/uaccess.h>
+#include <linux/smp_lock.h>
+#include <linux/interrupt.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <linux/crc32.h>
+#include <linux/init.h>
+#include <linux/firmware.h>
+
+#include "usb_atm.h"
+
+#ifdef VERBOSE_DEBUG
+static int udsl_print_packet(const unsigned char *data, int len);
+#define PACKETDEBUG(arg...) udsl_print_packet (arg)
+#define vdbg(arg...) dbg (arg)
+#else
+#define PACKETDEBUG(arg...)
+#define vdbg(arg...)
+#endif
+
+#define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <duncan.sands@free.fr>"
+#define DRIVER_VERSION "1.8"
+#define DRIVER_DESC "Generic USB ATM/DSL I/O, version " DRIVER_VERSION
+
+static unsigned int num_rcv_urbs = UDSL_DEFAULT_RCV_URBS;
+static unsigned int num_snd_urbs = UDSL_DEFAULT_SND_URBS;
+static unsigned int num_rcv_bufs = UDSL_DEFAULT_RCV_BUFS;
+static unsigned int num_snd_bufs = UDSL_DEFAULT_SND_BUFS;
+static unsigned int rcv_buf_size = UDSL_DEFAULT_RCV_BUF_SIZE;
+static unsigned int snd_buf_size = UDSL_DEFAULT_SND_BUF_SIZE;
+
+module_param(num_rcv_urbs, uint, 0444);
+MODULE_PARM_DESC(num_rcv_urbs,
+ "Number of urbs used for reception (range: 0-"
+ __MODULE_STRING(UDSL_MAX_RCV_URBS) ", default: "
+ __MODULE_STRING(UDSL_DEFAULT_RCV_URBS) ")");
+
+module_param(num_snd_urbs, uint, 0444);
+MODULE_PARM_DESC(num_snd_urbs,
+ "Number of urbs used for transmission (range: 0-"
+ __MODULE_STRING(UDSL_MAX_SND_URBS) ", default: "
+ __MODULE_STRING(UDSL_DEFAULT_SND_URBS) ")");
+
+module_param(num_rcv_bufs, uint, 0444);
+MODULE_PARM_DESC(num_rcv_bufs,
+ "Number of buffers used for reception (range: 0-"
+ __MODULE_STRING(UDSL_MAX_RCV_BUFS) ", default: "
+ __MODULE_STRING(UDSL_DEFAULT_RCV_BUFS) ")");
+
+module_param(num_snd_bufs, uint, 0444);
+MODULE_PARM_DESC(num_snd_bufs,
+ "Number of buffers used for transmission (range: 0-"
+ __MODULE_STRING(UDSL_MAX_SND_BUFS) ", default: "
+ __MODULE_STRING(UDSL_DEFAULT_SND_BUFS) ")");
+
+module_param(rcv_buf_size, uint, 0444);
+MODULE_PARM_DESC(rcv_buf_size,
+ "Size of the buffers used for reception (range: 0-"
+ __MODULE_STRING(UDSL_MAX_RCV_BUF_SIZE) ", default: "
+ __MODULE_STRING(UDSL_DEFAULT_RCV_BUF_SIZE) ")");
+
+module_param(snd_buf_size, uint, 0444);
+MODULE_PARM_DESC(snd_buf_size,
+ "Size of the buffers used for transmission (range: 0-"
+ __MODULE_STRING(UDSL_MAX_SND_BUF_SIZE) ", default: "
+ __MODULE_STRING(UDSL_DEFAULT_SND_BUF_SIZE) ")");
+
+/* ATM */
+
+static void udsl_atm_dev_close(struct atm_dev *dev);
+static int udsl_atm_open(struct atm_vcc *vcc);
+static void udsl_atm_close(struct atm_vcc *vcc);
+static int udsl_atm_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg);
+static int udsl_atm_send(struct atm_vcc *vcc, struct sk_buff *skb);
+static int udsl_atm_proc_read(struct atm_dev *atm_dev, loff_t * pos, char *page);
+
+static struct atmdev_ops udsl_atm_devops = {
+ .dev_close = udsl_atm_dev_close,
+ .open = udsl_atm_open,
+ .close = udsl_atm_close,
+ .ioctl = udsl_atm_ioctl,
+ .send = udsl_atm_send,
+ .proc_read = udsl_atm_proc_read,
+ .owner = THIS_MODULE,
+};
+
+/***********
+** misc **
+***********/
+
+static inline void udsl_pop(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+ if (vcc->pop)
+ vcc->pop(vcc, skb);
+ else
+ dev_kfree_skb(skb);
+}
+
+/*************
+** decode **
+*************/
+
+static inline struct udsl_vcc_data *udsl_find_vcc(struct udsl_instance_data *instance,
+ short vpi, int vci)
+{
+ struct udsl_vcc_data *vcc;
+
+ list_for_each_entry(vcc, &instance->vcc_list, list)
+ if ((vcc->vci == vci) && (vcc->vpi == vpi))
+ return vcc;
+ return NULL;
+}
+
+static void udsl_extract_cells(struct udsl_instance_data *instance,
+ unsigned char *source, unsigned int howmany)
+{
+ struct udsl_vcc_data *cached_vcc = NULL;
+ struct atm_vcc *vcc;
+ struct sk_buff *sarb;
+ struct udsl_vcc_data *vcc_data;
+ int cached_vci = 0;
+ unsigned int i;
+ int pti;
+ int vci;
+ short cached_vpi = 0;
+ short vpi;
+
+ for (i = 0; i < howmany;
+ i++, source += ATM_CELL_SIZE + instance->rcv_padding) {
+ vpi = ((source[0] & 0x0f) << 4) | (source[1] >> 4);
+ vci = ((source[1] & 0x0f) << 12) | (source[2] << 4) | (source[3] >> 4);
+ pti = (source[3] & 0x2) != 0;
+
+ vdbg("udsl_extract_cells: vpi %hd, vci %d, pti %d", vpi, vci, pti);
+
+ if (cached_vcc && (vci == cached_vci) && (vpi == cached_vpi))
+ vcc_data = cached_vcc;
+ else if ((vcc_data = udsl_find_vcc(instance, vpi, vci))) {
+ cached_vcc = vcc_data;
+ cached_vpi = vpi;
+ cached_vci = vci;
+ } else {
+ dbg("udsl_extract_cells: unknown vpi/vci (%hd/%d)!", vpi, vci);
+ continue;
+ }
+
+ vcc = vcc_data->vcc;
+ sarb = vcc_data->sarb;
+
+ if (sarb->tail + ATM_CELL_PAYLOAD > sarb->end) {
+ dbg("udsl_extract_cells: buffer overrun (sarb->len %u, vcc: 0x%p)!", sarb->len, vcc);
+ /* discard cells already received */
+ skb_trim(sarb, 0);
+ }
+
+ memcpy(sarb->tail, source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD);
+ __skb_put(sarb, ATM_CELL_PAYLOAD);
+
+ if (pti) {
+ struct sk_buff *skb;
+ unsigned int length;
+ unsigned int pdu_length;
+
+ length = (source[ATM_CELL_SIZE - 6] << 8) + source[ATM_CELL_SIZE - 5];
+
+ /* guard against overflow */
+ if (length > ATM_MAX_AAL5_PDU) {
+ dbg("udsl_extract_cells: bogus length %u (vcc: 0x%p)!", length, vcc);
+ atomic_inc(&vcc->stats->rx_err);
+ goto out;
+ }
+
+ pdu_length = UDSL_NUM_CELLS(length) * ATM_CELL_PAYLOAD;
+
+ if (sarb->len < pdu_length) {
+ dbg("udsl_extract_cells: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!", pdu_length, sarb->len, vcc);
+ atomic_inc(&vcc->stats->rx_err);
+ goto out;
+ }
+
+ if (crc32_be(~0, sarb->tail - pdu_length, pdu_length) != 0xc704dd7b) {
+ dbg("udsl_extract_cells: packet failed crc check (vcc: 0x%p)!", vcc);
+ atomic_inc(&vcc->stats->rx_err);
+ goto out;
+ }
+
+ vdbg("udsl_extract_cells: got packet (length: %u, pdu_length: %u, vcc: 0x%p)", length, pdu_length, vcc);
+
+ if (!(skb = dev_alloc_skb(length))) {
+ dbg("udsl_extract_cells: no memory for skb (length: %u)!", length);
+ atomic_inc(&vcc->stats->rx_drop);
+ goto out;
+ }
+
+ vdbg("udsl_extract_cells: allocated new sk_buff (skb: 0x%p, skb->truesize: %u)", skb, skb->truesize);
+
+ if (!atm_charge(vcc, skb->truesize)) {
+ dbg("udsl_extract_cells: failed atm_charge (skb->truesize: %u)!", skb->truesize);
+ dev_kfree_skb(skb);
+ goto out; /* atm_charge increments rx_drop */
+ }
+
+ memcpy(skb->data, sarb->tail - pdu_length, length);
+ __skb_put(skb, length);
+
+ vdbg("udsl_extract_cells: sending skb 0x%p, skb->len %u, skb->truesize %u", skb, skb->len, skb->truesize);
+
+ PACKETDEBUG(skb->data, skb->len);
+
+ vcc->push(vcc, skb);
+
+ atomic_inc(&vcc->stats->rx);
+ out:
+ skb_trim(sarb, 0);
+ }
+ }
+}
+
+/*************
+** encode **
+*************/
+
+static inline void udsl_fill_cell_header(unsigned char *target, struct atm_vcc *vcc)
+{
+ target[0] = vcc->vpi >> 4;
+ target[1] = (vcc->vpi << 4) | (vcc->vci >> 12);
+ target[2] = vcc->vci >> 4;
+ target[3] = vcc->vci << 4;
+ target[4] = 0xec;
+}
+
+static const unsigned char zeros[ATM_CELL_PAYLOAD];
+
+static void udsl_groom_skb(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+ struct udsl_control *ctrl = UDSL_SKB(skb);
+ unsigned int zero_padding;
+ u32 crc;
+
+ ctrl->atm_data.vcc = vcc;
+
+ ctrl->num_cells = UDSL_NUM_CELLS(skb->len);
+ ctrl->num_entire = skb->len / ATM_CELL_PAYLOAD;
+
+ zero_padding = ctrl->num_cells * ATM_CELL_PAYLOAD - skb->len - ATM_AAL5_TRAILER;
+
+ if (ctrl->num_entire + 1 < ctrl->num_cells)
+ ctrl->pdu_padding = zero_padding - (ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER);
+ else
+ ctrl->pdu_padding = zero_padding;
+
+ ctrl->aal5_trailer[0] = 0; /* UU = 0 */
+ ctrl->aal5_trailer[1] = 0; /* CPI = 0 */
+ ctrl->aal5_trailer[2] = skb->len >> 8;
+ ctrl->aal5_trailer[3] = skb->len;
+
+ crc = crc32_be(~0, skb->data, skb->len);
+ crc = crc32_be(crc, zeros, zero_padding);
+ crc = crc32_be(crc, ctrl->aal5_trailer, 4);
+ crc = ~crc;
+
+ ctrl->aal5_trailer[4] = crc >> 24;
+ ctrl->aal5_trailer[5] = crc >> 16;
+ ctrl->aal5_trailer[6] = crc >> 8;
+ ctrl->aal5_trailer[7] = crc;
+}
+
+static unsigned int udsl_write_cells(struct udsl_instance_data *instance,
+ unsigned int howmany, struct sk_buff *skb,
+ unsigned char **target_p)
+{
+ struct udsl_control *ctrl = UDSL_SKB(skb);
+ unsigned char *target = *target_p;
+ unsigned int nc, ne, i;
+
+ vdbg("udsl_write_cells: howmany=%u, skb->len=%d, num_cells=%u, num_entire=%u, pdu_padding=%u", howmany, skb->len, ctrl->num_cells, ctrl->num_entire, ctrl->pdu_padding);
+
+ nc = ctrl->num_cells;
+ ne = min(howmany, ctrl->num_entire);
+
+ for (i = 0; i < ne; i++) {
+ udsl_fill_cell_header(target, ctrl->atm_data.vcc);
+ target += ATM_CELL_HEADER;
+ memcpy(target, skb->data, ATM_CELL_PAYLOAD);
+ target += ATM_CELL_PAYLOAD;
+ if (instance->snd_padding) {
+ memset(target, 0, instance->snd_padding);
+ target += instance->snd_padding;
+ }
+ __skb_pull(skb, ATM_CELL_PAYLOAD);
+ }
+
+ ctrl->num_entire -= ne;
+
+ if (!(ctrl->num_cells -= ne) || !(howmany -= ne))
+ goto out;
+
+ udsl_fill_cell_header(target, ctrl->atm_data.vcc);
+ target += ATM_CELL_HEADER;
+ memcpy(target, skb->data, skb->len);
+ target += skb->len;
+ __skb_pull(skb, skb->len);
+ memset(target, 0, ctrl->pdu_padding);
+ target += ctrl->pdu_padding;
+
+ if (--ctrl->num_cells) {
+ if (!--howmany) {
+ ctrl->pdu_padding = ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER;
+ goto out;
+ }
+
+ if (instance->snd_padding) {
+ memset(target, 0, instance->snd_padding);
+ target += instance->snd_padding;
+ }
+ udsl_fill_cell_header(target, ctrl->atm_data.vcc);
+ target += ATM_CELL_HEADER;
+ memset(target, 0, ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER);
+ target += ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER;
+
+ --ctrl->num_cells;
+ UDSL_ASSERT(!ctrl->num_cells);
+ }
+
+ memcpy(target, ctrl->aal5_trailer, ATM_AAL5_TRAILER);
+ target += ATM_AAL5_TRAILER;
+ /* set pti bit in last cell */
+ *(target + 3 - ATM_CELL_SIZE) |= 0x2;
+ if (instance->snd_padding) {
+ memset(target, 0, instance->snd_padding);
+ target += instance->snd_padding;
+ }
+ out:
+ *target_p = target;
+ return nc - ctrl->num_cells;
+}
+
+/**************
+** receive **
+**************/
+
+static void udsl_complete_receive(struct urb *urb, struct pt_regs *regs)
+{
+ struct udsl_receive_buffer *buf;
+ struct udsl_instance_data *instance;
+ struct udsl_receiver *rcv;
+ unsigned long flags;
+
+ if (!urb || !(rcv = urb->context)) {
+ dbg("udsl_complete_receive: bad urb!");
+ return;
+ }
+
+ instance = rcv->instance;
+ buf = rcv->buffer;
+
+ buf->filled_cells = urb->actual_length / (ATM_CELL_SIZE + instance->rcv_padding);
+
+ vdbg("udsl_complete_receive: urb 0x%p, status %d, actual_length %d, filled_cells %u, rcv 0x%p, buf 0x%p", urb, urb->status, urb->actual_length, buf->filled_cells, rcv, buf);
+
+ UDSL_ASSERT(buf->filled_cells <= rcv_buf_size);
+
+ /* may not be in_interrupt() */
+ spin_lock_irqsave(&instance->receive_lock, flags);
+ list_add(&rcv->list, &instance->spare_receivers);
+ list_add_tail(&buf->list, &instance->filled_receive_buffers);
+ if (likely(!urb->status))
+ tasklet_schedule(&instance->receive_tasklet);
+ spin_unlock_irqrestore(&instance->receive_lock, flags);
+}
+
+static void udsl_process_receive(unsigned long data)
+{
+ struct udsl_receive_buffer *buf;
+ struct udsl_instance_data *instance = (struct udsl_instance_data *)data;
+ struct udsl_receiver *rcv;
+ int err;
+
+ made_progress:
+ while (!list_empty(&instance->spare_receive_buffers)) {
+ spin_lock_irq(&instance->receive_lock);
+ if (list_empty(&instance->spare_receivers)) {
+ spin_unlock_irq(&instance->receive_lock);
+ break;
+ }
+ rcv = list_entry(instance->spare_receivers.next,
+ struct udsl_receiver, list);
+ list_del(&rcv->list);
+ spin_unlock_irq(&instance->receive_lock);
+
+ buf = list_entry(instance->spare_receive_buffers.next,
+ struct udsl_receive_buffer, list);
+ list_del(&buf->list);
+
+ rcv->buffer = buf;
+
+ usb_fill_bulk_urb(rcv->urb, instance->usb_dev,
+ usb_rcvbulkpipe(instance->usb_dev, instance->data_endpoint),
+ buf->base,
+ rcv_buf_size * (ATM_CELL_SIZE + instance->rcv_padding),
+ udsl_complete_receive, rcv);
+
+ vdbg("udsl_process_receive: sending urb 0x%p, rcv 0x%p, buf 0x%p",
+ rcv->urb, rcv, buf);
+
+ if ((err = usb_submit_urb(rcv->urb, GFP_ATOMIC)) < 0) {
+ dbg("udsl_process_receive: urb submission failed (%d)!", err);
+ list_add(&buf->list, &instance->spare_receive_buffers);
+ spin_lock_irq(&instance->receive_lock);
+ list_add(&rcv->list, &instance->spare_receivers);
+ spin_unlock_irq(&instance->receive_lock);
+ break;
+ }
+ }
+
+ spin_lock_irq(&instance->receive_lock);
+ if (list_empty(&instance->filled_receive_buffers)) {
+ spin_unlock_irq(&instance->receive_lock);
+ return; /* done - no more buffers */
+ }
+ buf = list_entry(instance->filled_receive_buffers.next,
+ struct udsl_receive_buffer, list);
+ list_del(&buf->list);
+ spin_unlock_irq(&instance->receive_lock);
+
+ vdbg("udsl_process_receive: processing buf 0x%p", buf);
+ udsl_extract_cells(instance, buf->base, buf->filled_cells);
+ list_add(&buf->list, &instance->spare_receive_buffers);
+ goto made_progress;
+}
+
+/***********
+** send **
+***********/
+
+static void udsl_complete_send(struct urb *urb, struct pt_regs *regs)
+{
+ struct udsl_instance_data *instance;
+ struct udsl_sender *snd;
+ unsigned long flags;
+
+ if (!urb || !(snd = urb->context) || !(instance = snd->instance)) {
+ dbg("udsl_complete_send: bad urb!");
+ return;
+ }
+
+ vdbg("udsl_complete_send: urb 0x%p, status %d, snd 0x%p, buf 0x%p", urb,
+ urb->status, snd, snd->buffer);
+
+ /* may not be in_interrupt() */
+ spin_lock_irqsave(&instance->send_lock, flags);
+ list_add(&snd->list, &instance->spare_senders);
+ list_add(&snd->buffer->list, &instance->spare_send_buffers);
+ tasklet_schedule(&instance->send_tasklet);
+ spin_unlock_irqrestore(&instance->send_lock, flags);
+}
+
+static void udsl_process_send(unsigned long data)
+{
+ struct udsl_send_buffer *buf;
+ struct udsl_instance_data *instance = (struct udsl_instance_data *)data;
+ struct sk_buff *skb;
+ struct udsl_sender *snd;
+ int err;
+ unsigned int num_written;
+
+ made_progress:
+ spin_lock_irq(&instance->send_lock);
+ while (!list_empty(&instance->spare_senders)) {
+ if (!list_empty(&instance->filled_send_buffers)) {
+ buf = list_entry(instance->filled_send_buffers.next,
+ struct udsl_send_buffer, list);
+ list_del(&buf->list);
+ } else if ((buf = instance->current_buffer)) {
+ instance->current_buffer = NULL;
+ } else /* all buffers empty */
+ break;
+
+ snd = list_entry(instance->spare_senders.next,
+ struct udsl_sender, list);
+ list_del(&snd->list);
+ spin_unlock_irq(&instance->send_lock);
+
+ snd->buffer = buf;
+ usb_fill_bulk_urb(snd->urb, instance->usb_dev,
+ usb_sndbulkpipe(instance->usb_dev, instance->data_endpoint),
+ buf->base,
+ (snd_buf_size - buf->free_cells) * (ATM_CELL_SIZE + instance->snd_padding),
+ udsl_complete_send, snd);
+
+ vdbg("udsl_process_send: submitting urb 0x%p (%d cells), snd 0x%p, buf 0x%p",
+ snd->urb, snd_buf_size - buf->free_cells, snd, buf);
+
+ if ((err = usb_submit_urb(snd->urb, GFP_ATOMIC)) < 0) {
+ dbg("udsl_process_send: urb submission failed (%d)!", err);
+ spin_lock_irq(&instance->send_lock);
+ list_add(&snd->list, &instance->spare_senders);
+ spin_unlock_irq(&instance->send_lock);
+ list_add(&buf->list, &instance->filled_send_buffers);
+ return; /* bail out */
+ }
+
+ spin_lock_irq(&instance->send_lock);
+ } /* while */
+ spin_unlock_irq(&instance->send_lock);
+
+ if (!instance->current_skb)
+ instance->current_skb = skb_dequeue(&instance->sndqueue);
+ if (!instance->current_skb)
+ return; /* done - no more skbs */
+
+ skb = instance->current_skb;
+
+ if (!(buf = instance->current_buffer)) {
+ spin_lock_irq(&instance->send_lock);
+ if (list_empty(&instance->spare_send_buffers)) {
+ instance->current_buffer = NULL;
+ spin_unlock_irq(&instance->send_lock);
+ return; /* done - no more buffers */
+ }
+ buf = list_entry(instance->spare_send_buffers.next,
+ struct udsl_send_buffer, list);
+ list_del(&buf->list);
+ spin_unlock_irq(&instance->send_lock);
+
+ buf->free_start = buf->base;
+ buf->free_cells = snd_buf_size;
+
+ instance->current_buffer = buf;
+ }
+
+ num_written = udsl_write_cells(instance, buf->free_cells, skb, &buf->free_start);
+
+ vdbg("udsl_process_send: wrote %u cells from skb 0x%p to buffer 0x%p",
+ num_written, skb, buf);
+
+ if (!(buf->free_cells -= num_written)) {
+ list_add_tail(&buf->list, &instance->filled_send_buffers);
+ instance->current_buffer = NULL;
+ }
+
+ vdbg("udsl_process_send: buffer contains %d cells, %d left",
+ snd_buf_size - buf->free_cells, buf->free_cells);
+
+ if (!UDSL_SKB(skb)->num_cells) {
+ struct atm_vcc *vcc = UDSL_SKB(skb)->atm_data.vcc;
+
+ udsl_pop(vcc, skb);
+ instance->current_skb = NULL;
+
+ atomic_inc(&vcc->stats->tx);
+ }
+
+ goto made_progress;
+}
+
+static void udsl_cancel_send(struct udsl_instance_data *instance,
+ struct atm_vcc *vcc)
+{
+ struct sk_buff *skb, *n;
+
+ dbg("udsl_cancel_send entered");
+ spin_lock_irq(&instance->sndqueue.lock);
+ for (skb = instance->sndqueue.next, n = skb->next;
+ skb != (struct sk_buff *)&instance->sndqueue;
+ skb = n, n = skb->next)
+ if (UDSL_SKB(skb)->atm_data.vcc == vcc) {
+ dbg("udsl_cancel_send: popping skb 0x%p", skb);
+ __skb_unlink(skb, &instance->sndqueue);
+ udsl_pop(vcc, skb);
+ }
+ spin_unlock_irq(&instance->sndqueue.lock);
+
+ tasklet_disable(&instance->send_tasklet);
+ if ((skb = instance->current_skb) && (UDSL_SKB(skb)->atm_data.vcc == vcc)) {
+ dbg("udsl_cancel_send: popping current skb (0x%p)", skb);
+ instance->current_skb = NULL;
+ udsl_pop(vcc, skb);
+ }
+ tasklet_enable(&instance->send_tasklet);
+ dbg("udsl_cancel_send done");
+}
+
+static int udsl_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
+{
+ struct udsl_instance_data *instance = vcc->dev->dev_data;
+ int err;
+
+ vdbg("udsl_atm_send called (skb 0x%p, len %u)", skb, skb->len);
+
+ if (!instance) {
+ dbg("udsl_atm_send: NULL data!");
+ err = -ENODEV;
+ goto fail;
+ }
+
+ if (vcc->qos.aal != ATM_AAL5) {
+ dbg("udsl_atm_send: unsupported ATM type %d!", vcc->qos.aal);
+ err = -EINVAL;
+ goto fail;
+ }
+
+ if (skb->len > ATM_MAX_AAL5_PDU) {
+ dbg("udsl_atm_send: packet too long (%d vs %d)!", skb->len,
+ ATM_MAX_AAL5_PDU);
+ err = -EINVAL;
+ goto fail;
+ }
+
+ PACKETDEBUG(skb->data, skb->len);
+
+ udsl_groom_skb(vcc, skb);
+ skb_queue_tail(&instance->sndqueue, skb);
+ tasklet_schedule(&instance->send_tasklet);
+
+ return 0;
+
+ fail:
+ udsl_pop(vcc, skb);
+ return err;
+}
+
+/********************
+** bean counting **
+********************/
+
+static void udsl_destroy_instance(struct kref *kref)
+{
+ struct udsl_instance_data *instance =
+ container_of(kref, struct udsl_instance_data, refcount);
+
+ tasklet_kill(&instance->receive_tasklet);
+ tasklet_kill(&instance->send_tasklet);
+ usb_put_dev(instance->usb_dev);
+ kfree(instance);
+}
+
+void udsl_get_instance(struct udsl_instance_data *instance)
+{
+ kref_get(&instance->refcount);
+}
+
+void udsl_put_instance(struct udsl_instance_data *instance)
+{
+ kref_put(&instance->refcount, udsl_destroy_instance);
+}
+
+/**********
+** ATM **
+**********/
+
+static void udsl_atm_dev_close(struct atm_dev *dev)
+{
+ struct udsl_instance_data *instance = dev->dev_data;
+
+ dev->dev_data = NULL;
+ udsl_put_instance(instance);
+}
+
+static int udsl_atm_proc_read(struct atm_dev *atm_dev, loff_t * pos, char *page)
+{
+ struct udsl_instance_data *instance = atm_dev->dev_data;
+ int left = *pos;
+
+ if (!instance) {
+ dbg("udsl_atm_proc_read: NULL instance!");
+ return -ENODEV;
+ }
+
+ if (!left--)
+ return sprintf(page, "%s\n", instance->description);
+
+ if (!left--)
+ return sprintf(page, "MAC: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ atm_dev->esi[0], atm_dev->esi[1],
+ atm_dev->esi[2], atm_dev->esi[3],
+ atm_dev->esi[4], atm_dev->esi[5]);
+
+ if (!left--)
+ return sprintf(page,
+ "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop )\n",
+ atomic_read(&atm_dev->stats.aal5.tx),
+ atomic_read(&atm_dev->stats.aal5.tx_err),
+ atomic_read(&atm_dev->stats.aal5.rx),
+ atomic_read(&atm_dev->stats.aal5.rx_err),
+ atomic_read(&atm_dev->stats.aal5.rx_drop));
+
+ if (!left--) {
+ switch (atm_dev->signal) {
+ case ATM_PHY_SIG_FOUND:
+ sprintf(page, "Line up");
+ break;
+ case ATM_PHY_SIG_LOST:
+ sprintf(page, "Line down");
+ break;
+ default:
+ sprintf(page, "Line state unknown");
+ break;
+ }
+
+ if (instance->usb_dev->state == USB_STATE_NOTATTACHED)
+ strcat(page, ", disconnected\n");
+ else {
+ if (instance->status == UDSL_LOADED_FIRMWARE)
+ strcat(page, ", firmware loaded\n");
+ else if (instance->status == UDSL_LOADING_FIRMWARE)
+ strcat(page, ", firmware loading\n");
+ else
+ strcat(page, ", no firmware\n");
+ }
+
+ return strlen(page);
+ }
+
+ return 0;
+}
+
+static int udsl_atm_open(struct atm_vcc *vcc)
+{
+ struct udsl_instance_data *instance = vcc->dev->dev_data;
+ struct udsl_vcc_data *new;
+ unsigned int max_pdu;
+ int vci = vcc->vci;
+ short vpi = vcc->vpi;
+ int err;
+
+ dbg("udsl_atm_open: vpi %hd, vci %d", vpi, vci);
+
+ if (!instance) {
+ dbg("udsl_atm_open: NULL data!");
+ return -ENODEV;
+ }
+
+ /* only support AAL5 */
+ if ((vcc->qos.aal != ATM_AAL5) || (vcc->qos.rxtp.max_sdu < 0)
+ || (vcc->qos.rxtp.max_sdu > ATM_MAX_AAL5_PDU)) {
+ dbg("udsl_atm_open: unsupported ATM type %d!", vcc->qos.aal);
+ return -EINVAL;
+ }
+
+ if (instance->firmware_wait &&
+ (err = instance->firmware_wait(instance)) < 0) {
+ dbg("udsl_atm_open: firmware not loaded (%d)!", err);
+ return err;
+ }
+
+ down(&instance->serialize); /* vs self, udsl_atm_close */
+
+ if (udsl_find_vcc(instance, vpi, vci)) {
+ dbg("udsl_atm_open: %hd/%d already in use!", vpi, vci);
+ up(&instance->serialize);
+ return -EADDRINUSE;
+ }
+
+ if (!(new = kmalloc(sizeof(struct udsl_vcc_data), GFP_KERNEL))) {
+ dbg("udsl_atm_open: no memory for vcc_data!");
+ up(&instance->serialize);
+ return -ENOMEM;
+ }
+
+ memset(new, 0, sizeof(struct udsl_vcc_data));
+ new->vcc = vcc;
+ new->vpi = vpi;
+ new->vci = vci;
+
+ /* udsl_extract_cells requires at least one cell */
+ max_pdu = max(1, UDSL_NUM_CELLS(vcc->qos.rxtp.max_sdu)) * ATM_CELL_PAYLOAD;
+ if (!(new->sarb = alloc_skb(max_pdu, GFP_KERNEL))) {
+ dbg("udsl_atm_open: no memory for SAR buffer!");
+ kfree(new);
+ up(&instance->serialize);
+ return -ENOMEM;
+ }
+
+ vcc->dev_data = new;
+
+ tasklet_disable(&instance->receive_tasklet);
+ list_add(&new->list, &instance->vcc_list);
+ tasklet_enable(&instance->receive_tasklet);
+
+ set_bit(ATM_VF_ADDR, &vcc->flags);
+ set_bit(ATM_VF_PARTIAL, &vcc->flags);
+ set_bit(ATM_VF_READY, &vcc->flags);
+
+ up(&instance->serialize);
+
+ tasklet_schedule(&instance->receive_tasklet);
+
+ dbg("udsl_atm_open: allocated vcc data 0x%p (max_pdu: %u)", new, max_pdu);
+
+ return 0;
+}
+
+static void udsl_atm_close(struct atm_vcc *vcc)
+{
+ struct udsl_instance_data *instance = vcc->dev->dev_data;
+ struct udsl_vcc_data *vcc_data = vcc->dev_data;
+
+ dbg("udsl_atm_close called");
+
+ if (!instance || !vcc_data) {
+ dbg("udsl_atm_close: NULL data!");
+ return;
+ }
+
+ dbg("udsl_atm_close: deallocating vcc 0x%p with vpi %d vci %d",
+ vcc_data, vcc_data->vpi, vcc_data->vci);
+
+ udsl_cancel_send(instance, vcc);
+
+ down(&instance->serialize); /* vs self, udsl_atm_open */
+
+ tasklet_disable(&instance->receive_tasklet);
+ list_del(&vcc_data->list);
+ tasklet_enable(&instance->receive_tasklet);
+
+ kfree_skb(vcc_data->sarb);
+ vcc_data->sarb = NULL;
+
+ kfree(vcc_data);
+ vcc->dev_data = NULL;
+
+ vcc->vpi = ATM_VPI_UNSPEC;
+ vcc->vci = ATM_VCI_UNSPEC;
+ clear_bit(ATM_VF_READY, &vcc->flags);
+ clear_bit(ATM_VF_PARTIAL, &vcc->flags);
+ clear_bit(ATM_VF_ADDR, &vcc->flags);
+
+ up(&instance->serialize);
+
+ dbg("udsl_atm_close successful");
+}
+
+static int udsl_atm_ioctl(struct atm_dev *dev, unsigned int cmd,
+ void __user * arg)
+{
+ switch (cmd) {
+ case ATM_QUERYLOOP:
+ return put_user(ATM_LM_NONE, (int __user *)arg) ? -EFAULT : 0;
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
+/**********
+** USB **
+**********/
+
+int udsl_instance_setup(struct usb_device *dev,
+ struct udsl_instance_data *instance)
+{
+ char *buf;
+ int i, length;
+
+ kref_init(&instance->refcount); /* one for USB */
+ udsl_get_instance(instance); /* one for ATM */
+
+ init_MUTEX(&instance->serialize);
+
+ instance->usb_dev = dev;
+
+ INIT_LIST_HEAD(&instance->vcc_list);
+
+ instance->status = UDSL_NO_FIRMWARE;
+ init_waitqueue_head(&instance->firmware_waiters);
+
+ spin_lock_init(&instance->receive_lock);
+ INIT_LIST_HEAD(&instance->spare_receivers);
+ INIT_LIST_HEAD(&instance->filled_receive_buffers);
+
+ tasklet_init(&instance->receive_tasklet, udsl_process_receive, (unsigned long)instance);
+ INIT_LIST_HEAD(&instance->spare_receive_buffers);
+
+ skb_queue_head_init(&instance->sndqueue);
+
+ spin_lock_init(&instance->send_lock);
+ INIT_LIST_HEAD(&instance->spare_senders);
+ INIT_LIST_HEAD(&instance->spare_send_buffers);
+
+ tasklet_init(&instance->send_tasklet, udsl_process_send,
+ (unsigned long)instance);
+ INIT_LIST_HEAD(&instance->filled_send_buffers);
+
+ /* receive init */
+ for (i = 0; i < num_rcv_urbs; i++) {
+ struct udsl_receiver *rcv = &(instance->receivers[i]);
+
+ if (!(rcv->urb = usb_alloc_urb(0, GFP_KERNEL))) {
+ dbg("udsl_usb_probe: no memory for receive urb %d!", i);
+ goto fail;
+ }
+
+ rcv->instance = instance;
+
+ list_add(&rcv->list, &instance->spare_receivers);
+ }
+
+ for (i = 0; i < num_rcv_bufs; i++) {
+ struct udsl_receive_buffer *buf =
+ &(instance->receive_buffers[i]);
+
+ buf->base = kmalloc(rcv_buf_size * (ATM_CELL_SIZE + instance->rcv_padding),
+ GFP_KERNEL);
+ if (!buf->base) {
+ dbg("udsl_usb_probe: no memory for receive buffer %d!", i);
+ goto fail;
+ }
+
+ list_add(&buf->list, &instance->spare_receive_buffers);
+ }
+
+ /* send init */
+ for (i = 0; i < num_snd_urbs; i++) {
+ struct udsl_sender *snd = &(instance->senders[i]);
+
+ if (!(snd->urb = usb_alloc_urb(0, GFP_KERNEL))) {
+ dbg("udsl_usb_probe: no memory for send urb %d!", i);
+ goto fail;
+ }
+
+ snd->instance = instance;
+
+ list_add(&snd->list, &instance->spare_senders);
+ }
+
+ for (i = 0; i < num_snd_bufs; i++) {
+ struct udsl_send_buffer *buf = &(instance->send_buffers[i]);
+
+ buf->base = kmalloc(snd_buf_size * (ATM_CELL_SIZE + instance->snd_padding),
+ GFP_KERNEL);
+ if (!buf->base) {
+ dbg("udsl_usb_probe: no memory for send buffer %d!", i);
+ goto fail;
+ }
+
+ list_add(&buf->list, &instance->spare_send_buffers);
+ }
+
+ /* ATM init */
+ instance->atm_dev = atm_dev_register(instance->driver_name,
+ &udsl_atm_devops, -1, NULL);
+ if (!instance->atm_dev) {
+ dbg("udsl_usb_probe: failed to register ATM device!");
+ goto fail;
+ }
+
+ instance->atm_dev->ci_range.vpi_bits = ATM_CI_MAX;
+ instance->atm_dev->ci_range.vci_bits = ATM_CI_MAX;
+ instance->atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
+
+ /* temp init ATM device, set to 128kbit */
+ instance->atm_dev->link_rate = 128 * 1000 / 424;
+
+ /* device description */
+ buf = instance->description;
+ length = sizeof(instance->description);
+
+ if ((i = usb_string(dev, dev->descriptor.iProduct, buf, length)) < 0)
+ goto finish;
+
+ buf += i;
+ length -= i;
+
+ i = scnprintf(buf, length, " (");
+ buf += i;
+ length -= i;
+
+ if (length <= 0 || (i = usb_make_path(dev, buf, length)) < 0)
+ goto finish;
+
+ buf += i;
+ length -= i;
+
+ snprintf(buf, length, ")");
+
+ finish:
+ /* ready for ATM callbacks */
+ wmb();
+ instance->atm_dev->dev_data = instance;
+
+ usb_get_dev(dev);
+
+ return 0;
+
+ fail:
+ for (i = 0; i < num_snd_bufs; i++)
+ kfree(instance->send_buffers[i].base);
+
+ for (i = 0; i < num_snd_urbs; i++)
+ usb_free_urb(instance->senders[i].urb);
+
+ for (i = 0; i < num_rcv_bufs; i++)
+ kfree(instance->receive_buffers[i].base);
+
+ for (i = 0; i < num_rcv_urbs; i++)
+ usb_free_urb(instance->receivers[i].urb);
+
+ return -ENOMEM;
+}
+
+void udsl_instance_disconnect(struct udsl_instance_data *instance)
+{
+ int i;
+
+ dbg("udsl_instance_disconnect entered");
+
+ if (!instance) {
+ dbg("udsl_instance_disconnect: NULL instance!");
+ return;
+ }
+
+ /* receive finalize */
+ tasklet_disable(&instance->receive_tasklet);
+
+ for (i = 0; i < num_rcv_urbs; i++)
+ usb_kill_urb(instance->receivers[i].urb);
+
+ /* no need to take the spinlock */
+ INIT_LIST_HEAD(&instance->filled_receive_buffers);
+ INIT_LIST_HEAD(&instance->spare_receive_buffers);
+
+ tasklet_enable(&instance->receive_tasklet);
+
+ for (i = 0; i < num_rcv_urbs; i++)
+ usb_free_urb(instance->receivers[i].urb);
+
+ for (i = 0; i < num_rcv_bufs; i++)
+ kfree(instance->receive_buffers[i].base);
+
+ /* send finalize */
+ tasklet_disable(&instance->send_tasklet);
+
+ for (i = 0; i < num_snd_urbs; i++)
+ usb_kill_urb(instance->senders[i].urb);
+
+ /* no need to take the spinlock */
+ INIT_LIST_HEAD(&instance->spare_senders);
+ INIT_LIST_HEAD(&instance->spare_send_buffers);
+ instance->current_buffer = NULL;
+
+ tasklet_enable(&instance->send_tasklet);
+
+ for (i = 0; i < num_snd_urbs; i++)
+ usb_free_urb(instance->senders[i].urb);
+
+ for (i = 0; i < num_snd_bufs; i++)
+ kfree(instance->send_buffers[i].base);
+
+ /* ATM finalize */
+ shutdown_atm_dev(instance->atm_dev);
+}
+
+EXPORT_SYMBOL_GPL(udsl_get_instance);
+EXPORT_SYMBOL_GPL(udsl_put_instance);
+EXPORT_SYMBOL_GPL(udsl_instance_setup);
+EXPORT_SYMBOL_GPL(udsl_instance_disconnect);
+
+/***********
+** init **
+***********/
+
+static int __init udsl_usb_init(void)
+{
+ dbg("udsl_usb_init: driver version " DRIVER_VERSION);
+
+ if (sizeof(struct udsl_control) > sizeof(((struct sk_buff *) 0)->cb)) {
+ printk(KERN_ERR __FILE__ ": unusable with this kernel!\n");
+ return -EIO;
+ }
+
+ if ((num_rcv_urbs > UDSL_MAX_RCV_URBS)
+ || (num_snd_urbs > UDSL_MAX_SND_URBS)
+ || (num_rcv_bufs > UDSL_MAX_RCV_BUFS)
+ || (num_snd_bufs > UDSL_MAX_SND_BUFS)
+ || (rcv_buf_size > UDSL_MAX_RCV_BUF_SIZE)
+ || (snd_buf_size > UDSL_MAX_SND_BUF_SIZE))
+ return -EINVAL;
+
+ return 0;
+}
+
+static void __exit udsl_usb_exit(void)
+{
+}
+
+module_init(udsl_usb_init);
+module_exit(udsl_usb_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRIVER_VERSION);
+
+/************
+** debug **
+************/
+
+#ifdef VERBOSE_DEBUG
+static int udsl_print_packet(const unsigned char *data, int len)
+{
+ unsigned char buffer[256];
+ int i = 0, j = 0;
+
+ for (i = 0; i < len;) {
+ buffer[0] = '\0';
+ sprintf(buffer, "%.3d :", i);
+ for (j = 0; (j < 16) && (i < len); j++, i++) {
+ sprintf(buffer, "%s %2.2x", buffer, data[i]);
+ }
+ dbg("%s", buffer);
+ }
+ return i;
+}
+#endif
diff --git a/drivers/usb/atm/usb_atm.h b/drivers/usb/atm/usb_atm.h
new file mode 100644
index 00000000000..cf8c5328353
--- /dev/null
+++ b/drivers/usb/atm/usb_atm.h
@@ -0,0 +1,176 @@
+/******************************************************************************
+ * usb_atm.h - Generic USB xDSL driver core
+ *
+ * Copyright (C) 2001, Alcatel
+ * Copyright (C) 2003, Duncan Sands, SolNegro, Josep Comas
+ * Copyright (C) 2004, David Woodhouse
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ ******************************************************************************/
+
+#include <linux/config.h>
+#include <linux/list.h>
+#include <linux/kref.h>
+#include <linux/atm.h>
+#include <linux/atmdev.h>
+#include <asm/semaphore.h>
+
+/*
+#define DEBUG
+#define VERBOSE_DEBUG
+*/
+
+#if !defined (DEBUG) && defined (CONFIG_USB_DEBUG)
+# define DEBUG
+#endif
+
+#include <linux/usb.h>
+
+#ifdef DEBUG
+#define UDSL_ASSERT(x) BUG_ON(!(x))
+#else
+#define UDSL_ASSERT(x) do { if (!(x)) warn("failed assertion '" #x "' at line %d", __LINE__); } while(0)
+#endif
+
+#define UDSL_MAX_RCV_URBS 4
+#define UDSL_MAX_SND_URBS 4
+#define UDSL_MAX_RCV_BUFS 8
+#define UDSL_MAX_SND_BUFS 8
+#define UDSL_MAX_RCV_BUF_SIZE 1024 /* ATM cells */
+#define UDSL_MAX_SND_BUF_SIZE 1024 /* ATM cells */
+#define UDSL_DEFAULT_RCV_URBS 2
+#define UDSL_DEFAULT_SND_URBS 2
+#define UDSL_DEFAULT_RCV_BUFS 4
+#define UDSL_DEFAULT_SND_BUFS 4
+#define UDSL_DEFAULT_RCV_BUF_SIZE 64 /* ATM cells */
+#define UDSL_DEFAULT_SND_BUF_SIZE 64 /* ATM cells */
+
+#define ATM_CELL_HEADER (ATM_CELL_SIZE - ATM_CELL_PAYLOAD)
+#define UDSL_NUM_CELLS(x) (((x) + ATM_AAL5_TRAILER + ATM_CELL_PAYLOAD - 1) / ATM_CELL_PAYLOAD)
+
+/* receive */
+
+struct udsl_receive_buffer {
+ struct list_head list;
+ unsigned char *base;
+ unsigned int filled_cells;
+};
+
+struct udsl_receiver {
+ struct list_head list;
+ struct udsl_receive_buffer *buffer;
+ struct urb *urb;
+ struct udsl_instance_data *instance;
+};
+
+struct udsl_vcc_data {
+ /* vpi/vci lookup */
+ struct list_head list;
+ short vpi;
+ int vci;
+ struct atm_vcc *vcc;
+
+ /* raw cell reassembly */
+ struct sk_buff *sarb;
+};
+
+/* send */
+
+struct udsl_send_buffer {
+ struct list_head list;
+ unsigned char *base;
+ unsigned char *free_start;
+ unsigned int free_cells;
+};
+
+struct udsl_sender {
+ struct list_head list;
+ struct udsl_send_buffer *buffer;
+ struct urb *urb;
+ struct udsl_instance_data *instance;
+};
+
+struct udsl_control {
+ struct atm_skb_data atm_data;
+ unsigned int num_cells;
+ unsigned int num_entire;
+ unsigned int pdu_padding;
+ unsigned char aal5_trailer[ATM_AAL5_TRAILER];
+};
+
+#define UDSL_SKB(x) ((struct udsl_control *)(x)->cb)
+
+/* main driver data */
+
+enum udsl_status {
+ UDSL_NO_FIRMWARE,
+ UDSL_LOADING_FIRMWARE,
+ UDSL_LOADED_FIRMWARE
+};
+
+struct udsl_instance_data {
+ struct kref refcount;
+ struct semaphore serialize;
+
+ /* USB device part */
+ struct usb_device *usb_dev;
+ char description[64];
+ int data_endpoint;
+ int snd_padding;
+ int rcv_padding;
+ const char *driver_name;
+
+ /* ATM device part */
+ struct atm_dev *atm_dev;
+ struct list_head vcc_list;
+
+ /* firmware */
+ int (*firmware_wait) (struct udsl_instance_data *);
+ enum udsl_status status;
+ wait_queue_head_t firmware_waiters;
+
+ /* receive */
+ struct udsl_receiver receivers[UDSL_MAX_RCV_URBS];
+ struct udsl_receive_buffer receive_buffers[UDSL_MAX_RCV_BUFS];
+
+ spinlock_t receive_lock;
+ struct list_head spare_receivers;
+ struct list_head filled_receive_buffers;
+
+ struct tasklet_struct receive_tasklet;
+ struct list_head spare_receive_buffers;
+
+ /* send */
+ struct udsl_sender senders[UDSL_MAX_SND_URBS];
+ struct udsl_send_buffer send_buffers[UDSL_MAX_SND_BUFS];
+
+ struct sk_buff_head sndqueue;
+
+ spinlock_t send_lock;
+ struct list_head spare_senders;
+ struct list_head spare_send_buffers;
+
+ struct tasklet_struct send_tasklet;
+ struct sk_buff *current_skb; /* being emptied */
+ struct udsl_send_buffer *current_buffer; /* being filled */
+ struct list_head filled_send_buffers;
+};
+
+extern int udsl_instance_setup(struct usb_device *dev,
+ struct udsl_instance_data *instance);
+extern void udsl_instance_disconnect(struct udsl_instance_data *instance);
+extern void udsl_get_instance(struct udsl_instance_data *instance);
+extern void udsl_put_instance(struct udsl_instance_data *instance);
generated by cgit (git 2.34.1) at 2024-11-11 07:03:59 +0000