cxacru.c 36.2 KB
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/******************************************************************************
 *  cxacru.c  -  driver for USB ADSL modems based on
 *               Conexant AccessRunner chipset
 *
 *  Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan
 *  Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru)
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 *  Copyright (C) 2007 Simon Arlott
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 *
 *  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.
 *
 ******************************************************************************/

/*
 *  Credit is due for Josep Comas, who created the original patch to speedtch.c
 *  to support the different padding used by the AccessRunner (now generalized
 *  into usbatm), and the userspace firmware loading utility.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/timer.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/firmware.h>
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#include <linux/mutex.h>
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#include <asm/unaligned.h>
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#include "usbatm.h"

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#define DRIVER_AUTHOR	"Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott"
#define DRIVER_VERSION	"0.3"
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#define DRIVER_DESC	"Conexant AccessRunner ADSL USB modem driver"

static const char cxacru_driver_name[] = "cxacru";

#define CXACRU_EP_CMD		0x01	/* Bulk/interrupt in/out */
#define CXACRU_EP_DATA		0x02	/* Bulk in/out */

#define CMD_PACKET_SIZE		64	/* Should be maxpacket(ep)? */

/* Addresses */
#define PLLFCLK_ADDR	0x00350068
#define PLLBCLK_ADDR	0x0035006c
#define SDRAMEN_ADDR	0x00350010
#define FW_ADDR		0x00801000
#define BR_ADDR		0x00180600
#define SIG_ADDR	0x00180500
#define BR_STACK_ADDR	0x00187f10

/* Values */
#define SDRAM_ENA	0x1

#define CMD_TIMEOUT	2000	/* msecs */
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#define POLL_INTERVAL	1	/* secs */
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/* commands for interaction with the modem through the control channel before
 * firmware is loaded  */
enum cxacru_fw_request {
	FW_CMD_ERR,
	FW_GET_VER,
	FW_READ_MEM,
	FW_WRITE_MEM,
	FW_RMW_MEM,
	FW_CHECKSUM_MEM,
	FW_GOTO_MEM,
};

/* commands for interaction with the modem through the control channel once
 * firmware is loaded  */
enum cxacru_cm_request {
	CM_REQUEST_UNDEFINED = 0x80,
	CM_REQUEST_TEST,
	CM_REQUEST_CHIP_GET_MAC_ADDRESS,
	CM_REQUEST_CHIP_GET_DP_VERSIONS,
	CM_REQUEST_CHIP_ADSL_LINE_START,
	CM_REQUEST_CHIP_ADSL_LINE_STOP,
	CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS,
	CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED,
	CM_REQUEST_CARD_INFO_GET,
	CM_REQUEST_CARD_DATA_GET,
	CM_REQUEST_CARD_DATA_SET,
	CM_REQUEST_COMMAND_HW_IO,
	CM_REQUEST_INTERFACE_HW_IO,
	CM_REQUEST_CARD_SERIAL_DATA_PATH_GET,
	CM_REQUEST_CARD_SERIAL_DATA_PATH_SET,
	CM_REQUEST_CARD_CONTROLLER_VERSION_GET,
	CM_REQUEST_CARD_GET_STATUS,
	CM_REQUEST_CARD_GET_MAC_ADDRESS,
	CM_REQUEST_CARD_GET_DATA_LINK_STATUS,
	CM_REQUEST_MAX,
};

/* reply codes to the commands above */
enum cxacru_cm_status {
	CM_STATUS_UNDEFINED,
	CM_STATUS_SUCCESS,
	CM_STATUS_ERROR,
	CM_STATUS_UNSUPPORTED,
	CM_STATUS_UNIMPLEMENTED,
	CM_STATUS_PARAMETER_ERROR,
	CM_STATUS_DBG_LOOPBACK,
	CM_STATUS_MAX,
};

/* indices into CARD_INFO_GET return array */
enum cxacru_info_idx {
	CXINF_DOWNSTREAM_RATE,
	CXINF_UPSTREAM_RATE,
	CXINF_LINK_STATUS,
	CXINF_LINE_STATUS,
	CXINF_MAC_ADDRESS_HIGH,
	CXINF_MAC_ADDRESS_LOW,
	CXINF_UPSTREAM_SNR_MARGIN,
	CXINF_DOWNSTREAM_SNR_MARGIN,
	CXINF_UPSTREAM_ATTENUATION,
	CXINF_DOWNSTREAM_ATTENUATION,
	CXINF_TRANSMITTER_POWER,
	CXINF_UPSTREAM_BITS_PER_FRAME,
	CXINF_DOWNSTREAM_BITS_PER_FRAME,
	CXINF_STARTUP_ATTEMPTS,
	CXINF_UPSTREAM_CRC_ERRORS,
	CXINF_DOWNSTREAM_CRC_ERRORS,
	CXINF_UPSTREAM_FEC_ERRORS,
	CXINF_DOWNSTREAM_FEC_ERRORS,
	CXINF_UPSTREAM_HEC_ERRORS,
	CXINF_DOWNSTREAM_HEC_ERRORS,
	CXINF_LINE_STARTABLE,
	CXINF_MODULATION,
	CXINF_ADSL_HEADEND,
	CXINF_ADSL_HEADEND_ENVIRONMENT,
	CXINF_CONTROLLER_VERSION,
	/* dunno what the missing two mean */
	CXINF_MAX = 0x1c,
};

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enum cxacru_poll_state {
	CXPOLL_STOPPING,
	CXPOLL_STOPPED,
	CXPOLL_POLLING,
	CXPOLL_SHUTDOWN
};

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struct cxacru_modem_type {
	u32 pll_f_clk;
	u32 pll_b_clk;
	int boot_rom_patch;
};

struct cxacru_data {
	struct usbatm_data *usbatm;

	const struct cxacru_modem_type *modem_type;

	int line_status;
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	struct mutex adsl_state_serialize;
	int adsl_status;
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	struct delayed_work poll_work;
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	u32 card_info[CXINF_MAX];
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	struct mutex poll_state_serialize;
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	enum cxacru_poll_state poll_state;
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	/* contol handles */
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	struct mutex cm_serialize;
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	u8 *rcv_buf;
	u8 *snd_buf;
	struct urb *rcv_urb;
	struct urb *snd_urb;
	struct completion rcv_done;
	struct completion snd_done;
};

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static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
	u8 *wdata, int wsize, u8 *rdata, int rsize);
static void cxacru_poll_status(struct work_struct *work);

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/* Card info exported through sysfs */
#define CXACRU__ATTR_INIT(_name) \
static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL)

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#define CXACRU_CMD_INIT(_name) \
static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \
	cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name)

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#define CXACRU_ATTR_INIT(_value, _type, _name) \
static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \
	struct device_attribute *attr, char *buf) \
{ \
	struct usb_interface *intf = to_usb_interface(dev); \
	struct usbatm_data *usbatm_instance = usb_get_intfdata(intf); \
	struct cxacru_data *instance = usbatm_instance->driver_data; \
	return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \
} \
CXACRU__ATTR_INIT(_name)

#define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name)
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#define CXACRU_CMD_CREATE(_name)          CXACRU_DEVICE_CREATE_FILE(_name)
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#define CXACRU__ATTR_CREATE(_name)        CXACRU_DEVICE_CREATE_FILE(_name)

#define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name)
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#define CXACRU_CMD_REMOVE(_name)          CXACRU_DEVICE_REMOVE_FILE(_name)
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#define CXACRU__ATTR_REMOVE(_name)        CXACRU_DEVICE_REMOVE_FILE(_name)

static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf)
{
	return snprintf(buf, PAGE_SIZE, "%u\n", value);
}

static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
{
	return snprintf(buf, PAGE_SIZE, "%d\n", value);
}

static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
{
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	return snprintf(buf, PAGE_SIZE, "%d.%02u\n",
					value / 100, abs(value) % 100);
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}

static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
{
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	static char *str[] = { "no", "yes" };
	if (unlikely(value >= ARRAY_SIZE(str)))
		return snprintf(buf, PAGE_SIZE, "%u\n", value);
	return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
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}

static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
{
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	static char *str[] = { NULL, "not connected", "connected", "lost" };
	if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
		return snprintf(buf, PAGE_SIZE, "%u\n", value);
	return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
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}

static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
{
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	static char *str[] = { "down", "attempting to activate",
		"training", "channel analysis", "exchange", "up",
		"waiting", "initialising"
	};
	if (unlikely(value >= ARRAY_SIZE(str)))
		return snprintf(buf, PAGE_SIZE, "%u\n", value);
	return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
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}

static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
{
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	static char *str[] = {
			NULL,
			"ANSI T1.413",
			"ITU-T G.992.1 (G.DMT)",
			"ITU-T G.992.2 (G.LITE)"
	};
	if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
		return snprintf(buf, PAGE_SIZE, "%u\n", value);
	return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
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}

/*
 * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since
 * this data is already in atm_dev there's no point.
 *
 * MAC_ADDRESS_HIGH = 0x????5544
 * MAC_ADDRESS_LOW  = 0x33221100
 * Where 00-55 are bytes 0-5 of the MAC.
 */
static ssize_t cxacru_sysfs_show_mac_address(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	struct usb_interface *intf = to_usb_interface(dev);
	struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
	struct atm_dev *atm_dev = usbatm_instance->atm_dev;

	return snprintf(buf, PAGE_SIZE, "%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]);
}

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static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev,
	struct device_attribute *attr, char *buf)
{
	struct usb_interface *intf = to_usb_interface(dev);
	struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
	struct cxacru_data *instance = usbatm_instance->driver_data;
	u32 value = instance->card_info[CXINF_LINE_STARTABLE];

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	static char *str[] = { "running", "stopped" };
	if (unlikely(value >= ARRAY_SIZE(str)))
		return snprintf(buf, PAGE_SIZE, "%u\n", value);
	return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
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}

static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev,
	struct device_attribute *attr, const char *buf, size_t count)
{
	struct usb_interface *intf = to_usb_interface(dev);
	struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
	struct cxacru_data *instance = usbatm_instance->driver_data;
	int ret;
	int poll = -1;
	char str_cmd[8];
	int len = strlen(buf);

	if (!capable(CAP_NET_ADMIN))
		return -EACCES;

	ret = sscanf(buf, "%7s", str_cmd);
	if (ret != 1)
		return -EINVAL;
	ret = 0;

	if (mutex_lock_interruptible(&instance->adsl_state_serialize))
		return -ERESTARTSYS;

	if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) {
		ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0);
		if (ret < 0) {
			atm_err(usbatm_instance, "change adsl state:"
				" CHIP_ADSL_LINE_STOP returned %d\n", ret);

			ret = -EIO;
		} else {
			ret = len;
			poll = CXPOLL_STOPPED;
		}
	}

	/* Line status is only updated every second
	 * and the device appears to only react to
	 * START/STOP every second too. Wait 1.5s to
	 * be sure that restart will have an effect. */
	if (!strcmp(str_cmd, "restart"))
		msleep(1500);

	if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) {
		ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
		if (ret < 0) {
			atm_err(usbatm_instance, "change adsl state:"
				" CHIP_ADSL_LINE_START returned %d\n", ret);

			ret = -EIO;
		} else {
			ret = len;
			poll = CXPOLL_POLLING;
		}
	}

	if (!strcmp(str_cmd, "poll")) {
		ret = len;
		poll = CXPOLL_POLLING;
	}

	if (ret == 0) {
		ret = -EINVAL;
		poll = -1;
	}

	if (poll == CXPOLL_POLLING) {
		mutex_lock(&instance->poll_state_serialize);
		switch (instance->poll_state) {
		case CXPOLL_STOPPED:
			/* start polling */
			instance->poll_state = CXPOLL_POLLING;
			break;

		case CXPOLL_STOPPING:
			/* abort stop request */
			instance->poll_state = CXPOLL_POLLING;
		case CXPOLL_POLLING:
		case CXPOLL_SHUTDOWN:
			/* don't start polling */
			poll = -1;
		}
		mutex_unlock(&instance->poll_state_serialize);
	} else if (poll == CXPOLL_STOPPED) {
		mutex_lock(&instance->poll_state_serialize);
		/* request stop */
		if (instance->poll_state == CXPOLL_POLLING)
			instance->poll_state = CXPOLL_STOPPING;
		mutex_unlock(&instance->poll_state_serialize);
	}

	mutex_unlock(&instance->adsl_state_serialize);

	if (poll == CXPOLL_POLLING)
		cxacru_poll_status(&instance->poll_work.work);

	return ret;
}

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/*
 * All device attributes are included in CXACRU_ALL_FILES
 * so that the same list can be used multiple times:
 *     INIT   (define the device attributes)
 *     CREATE (create all the device files)
 *     REMOVE (remove all the device files)
 *
 * With the last two being defined as needed in the functions
 * they are used in before calling CXACRU_ALL_FILES()
 */
#define CXACRU_ALL_FILES(_action) \
CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE,           u32,  downstream_rate); \
CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE,             u32,  upstream_rate); \
CXACRU_ATTR_##_action(CXINF_LINK_STATUS,               LINK, link_status); \
CXACRU_ATTR_##_action(CXINF_LINE_STATUS,               LINE, line_status); \
CXACRU__ATTR_##_action(                                      mac_address); \
CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN,       dB,   upstream_snr_margin); \
CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN,     dB,   downstream_snr_margin); \
CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION,      dB,   upstream_attenuation); \
CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION,    dB,   downstream_attenuation); \
CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER,         s8,   transmitter_power); \
CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME,   u32,  upstream_bits_per_frame); \
CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32,  downstream_bits_per_frame); \
CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS,          u32,  startup_attempts); \
CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS,       u32,  upstream_crc_errors); \
CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS,     u32,  downstream_crc_errors); \
CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS,       u32,  upstream_fec_errors); \
CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS,     u32,  downstream_fec_errors); \
CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS,       u32,  upstream_hec_errors); \
CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS,     u32,  downstream_hec_errors); \
CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE,            bool, line_startable); \
CXACRU_ATTR_##_action(CXINF_MODULATION,                MODU, modulation); \
CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND,              u32,  adsl_headend); \
CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT,  u32,  adsl_headend_environment); \
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CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION,        u32,  adsl_controller_version); \
CXACRU_CMD_##_action(                                        adsl_state);
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CXACRU_ALL_FILES(INIT);

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/* the following three functions are stolen from drivers/usb/core/message.c */
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static void cxacru_blocking_completion(struct urb *urb)
447
{
448
	complete(urb->context);
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}

static void cxacru_timeout_kill(unsigned long data)
{
	usb_unlink_urb((struct urb *) data);
}

static int cxacru_start_wait_urb(struct urb *urb, struct completion *done,
				 int* actual_length)
{
	struct timer_list timer;

	init_timer(&timer);
	timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT);
	timer.data = (unsigned long) urb;
	timer.function = cxacru_timeout_kill;
	add_timer(&timer);
	wait_for_completion(done);
	del_timer_sync(&timer);

	if (actual_length)
		*actual_length = urb->actual_length;
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	return urb->status; /* must read status after completion */
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}

static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
		     u8 *wdata, int wsize, u8 *rdata, int rsize)
{
	int ret, actlen;
	int offb, offd;
	const int stride = CMD_PACKET_SIZE - 4;
	u8 *wbuf = instance->snd_buf;
	u8 *rbuf = instance->rcv_buf;
	int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE;
	int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE;

	if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) {
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		if (printk_ratelimit())
			usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n",
				wbuflen, rbuflen);
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		ret = -ENOMEM;
		goto fail;
	}

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	mutex_lock(&instance->cm_serialize);
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	/* submit reading urb before the writing one */
	init_completion(&instance->rcv_done);
	ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL);
	if (ret < 0) {
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		if (printk_ratelimit())
			usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n",
				cm, ret);
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		goto fail;
	}

	memset(wbuf, 0, wbuflen);
	/* handle wsize == 0 */
	wbuf[0] = cm;
	for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) {
		wbuf[offb] = cm;
		memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd));
	}

	instance->snd_urb->transfer_buffer_length = wbuflen;
	init_completion(&instance->snd_done);
	ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL);
	if (ret < 0) {
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		if (printk_ratelimit())
			usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n",
				cm, ret);
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		goto fail;
	}

	ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
	if (ret < 0) {
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		if (printk_ratelimit())
			usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret);
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		goto fail;
	}

	ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
	if (ret < 0) {
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		if (printk_ratelimit())
			usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret);
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		goto fail;
	}
	if (actlen % CMD_PACKET_SIZE || !actlen) {
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		if (printk_ratelimit())
			usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n",
				cm, actlen);
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		ret = -EIO;
		goto fail;
	}

	/* check the return status and copy the data to the output buffer, if needed */
	for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) {
		if (rbuf[offb] != cm) {
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			if (printk_ratelimit())
				usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n",
					rbuf[offb], cm);
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			ret = -EIO;
			goto fail;
		}
		if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
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			if (printk_ratelimit())
				usb_err(instance->usbatm, "response to cm %#x failed: %#x\n",
					cm, rbuf[offb + 1]);
557 558 559 560 561 562 563 564 565 566 567 568
			ret = -EIO;
			goto fail;
		}
		if (offd >= rsize)
			break;
		memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd));
		offd += stride;
	}

	ret = offd;
	dbg("cm %#x", cm);
fail:
569
	mutex_unlock(&instance->cm_serialize);
570 571 572 573 574 575 576
	return ret;
}

static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm,
			       u32 *data, int size)
{
	int ret, len;
A
Al Viro 已提交
577
	__le32 *buf;
578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594
	int offb, offd;
	const int stride = CMD_PACKET_SIZE / (4 * 2) - 1;
	int buflen =  ((size - 1) / stride + 1 + size * 2) * 4;

	buf = kmalloc(buflen, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen);
	if (ret < 0)
		goto cleanup;

	/* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */
	len = ret / 4;
	for (offb = 0; offb < len; ) {
		int l = le32_to_cpu(buf[offb++]);
		if (l > stride || l > (len - offb) / 2) {
595 596 597
			if (printk_ratelimit())
				usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n",
					cm, l);
598 599 600 601 602 603
			ret = -EIO;
			goto cleanup;
		}
		while (l--) {
			offd = le32_to_cpu(buf[offb++]);
			if (offd >= size) {
604 605 606
				if (printk_ratelimit())
					usb_err(instance->usbatm, "wrong index #%x in response to cm #%x\n",
						offd, cm);
607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630
				ret = -EIO;
				goto cleanup;
			}
			data[offd] = le32_to_cpu(buf[offb++]);
		}
	}

	ret = 0;

cleanup:
	kfree(buf);
	return ret;
}

static int cxacru_card_status(struct cxacru_data *instance)
{
	int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
	if (ret < 0) {		/* firmware not loaded */
		dbg("cxacru_adsl_start: CARD_GET_STATUS returned %d", ret);
		return ret;
	}
	return 0;
}

631 632 633 634 635 636 637 638 639 640 641
static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance,
		struct atm_dev *atm_dev)
{
	struct usb_interface *intf = usbatm_instance->usb_intf;

	#define CXACRU_DEVICE_REMOVE_FILE(_name) \
		device_remove_file(&intf->dev, &dev_attr_##_name);
	CXACRU_ALL_FILES(REMOVE);
	#undef CXACRU_DEVICE_REMOVE_FILE
}

642 643 644 645
static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
		struct atm_dev *atm_dev)
{
	struct cxacru_data *instance = usbatm_instance->driver_data;
646
	struct usb_interface *intf = usbatm_instance->usb_intf;
647 648 649 650
	/*
	struct atm_dev *atm_dev = usbatm_instance->atm_dev;
	*/
	int ret;
651
	int start_polling = 1;
652 653 654 655 656 657 658

	dbg("cxacru_atm_start");

	/* Read MAC address */
	ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
			atm_dev->esi, sizeof(atm_dev->esi));
	if (ret < 0) {
659
		atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
660 661 662
		return ret;
	}

663 664 665 666 667 668 669
	#define CXACRU_DEVICE_CREATE_FILE(_name) \
		ret = device_create_file(&intf->dev, &dev_attr_##_name); \
		if (unlikely(ret)) \
			goto fail_sysfs;
	CXACRU_ALL_FILES(CREATE);
	#undef CXACRU_DEVICE_CREATE_FILE

670
	/* start ADSL */
671
	mutex_lock(&instance->adsl_state_serialize);
672
	ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
673
	if (ret < 0)
674
		atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
675 676

	/* Start status polling */
677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696
	mutex_lock(&instance->poll_state_serialize);
	switch (instance->poll_state) {
	case CXPOLL_STOPPED:
		/* start polling */
		instance->poll_state = CXPOLL_POLLING;
		break;

	case CXPOLL_STOPPING:
		/* abort stop request */
		instance->poll_state = CXPOLL_POLLING;
	case CXPOLL_POLLING:
	case CXPOLL_SHUTDOWN:
		/* don't start polling */
		start_polling = 0;
	}
	mutex_unlock(&instance->poll_state_serialize);
	mutex_unlock(&instance->adsl_state_serialize);

	if (start_polling)
		cxacru_poll_status(&instance->poll_work.work);
697
	return 0;
698 699 700 701 702

fail_sysfs:
	usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret);
	cxacru_remove_device_files(usbatm_instance, atm_dev);
	return ret;
703 704
}

D
David Howells 已提交
705
static void cxacru_poll_status(struct work_struct *work)
706
{
D
David Howells 已提交
707 708
	struct cxacru_data *instance =
		container_of(work, struct cxacru_data, poll_work.work);
709
	u32 buf[CXINF_MAX] = {};
710 711
	struct usbatm_data *usbatm = instance->usbatm;
	struct atm_dev *atm_dev = usbatm->atm_dev;
712
	int keep_polling = 1;
713 714 715 716
	int ret;

	ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
	if (ret < 0) {
717 718 719 720 721 722 723 724 725 726 727 728
		if (ret != -ESHUTDOWN)
			atm_warn(usbatm, "poll status: error %d\n", ret);

		mutex_lock(&instance->poll_state_serialize);
		if (instance->poll_state != CXPOLL_SHUTDOWN) {
			instance->poll_state = CXPOLL_STOPPED;

			if (ret != -ESHUTDOWN)
				atm_warn(usbatm, "polling disabled, set adsl_state"
						" to 'start' or 'poll' to resume\n");
		}
		mutex_unlock(&instance->poll_state_serialize);
729 730 731
		goto reschedule;
	}

732 733
	memcpy(instance->card_info, buf, sizeof(instance->card_info));

734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751
	if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) {
		instance->adsl_status = buf[CXINF_LINE_STARTABLE];

		switch (instance->adsl_status) {
		case 0:
			atm_printk(KERN_INFO, usbatm, "ADSL state: running\n");
			break;

		case 1:
			atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n");
			break;

		default:
			atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status);
			break;
		}
	}

752 753 754 755 756 757 758
	if (instance->line_status == buf[CXINF_LINE_STATUS])
		goto reschedule;

	instance->line_status = buf[CXINF_LINE_STATUS];
	switch (instance->line_status) {
	case 0:
		atm_dev->signal = ATM_PHY_SIG_LOST;
759
		atm_info(usbatm, "ADSL line: down\n");
760 761 762 763
		break;

	case 1:
		atm_dev->signal = ATM_PHY_SIG_LOST;
764
		atm_info(usbatm, "ADSL line: attempting to activate\n");
765 766 767 768
		break;

	case 2:
		atm_dev->signal = ATM_PHY_SIG_LOST;
769
		atm_info(usbatm, "ADSL line: training\n");
770 771 772 773
		break;

	case 3:
		atm_dev->signal = ATM_PHY_SIG_LOST;
774
		atm_info(usbatm, "ADSL line: channel analysis\n");
775 776 777 778
		break;

	case 4:
		atm_dev->signal = ATM_PHY_SIG_LOST;
779
		atm_info(usbatm, "ADSL line: exchange\n");
780 781 782 783 784 785
		break;

	case 5:
		atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
		atm_dev->signal = ATM_PHY_SIG_FOUND;

786
		atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
787 788 789 790 791
		     buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
		break;

	case 6:
		atm_dev->signal = ATM_PHY_SIG_LOST;
792
		atm_info(usbatm, "ADSL line: waiting\n");
793 794 795 796
		break;

	case 7:
		atm_dev->signal = ATM_PHY_SIG_LOST;
797
		atm_info(usbatm, "ADSL line: initializing\n");
798 799 800 801
		break;

	default:
		atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
802
		atm_info(usbatm, "Unknown line state %02x\n", instance->line_status);
803 804 805
		break;
	}
reschedule:
806 807 808 809 810 811 812 813 814 815 816 817 818 819

	mutex_lock(&instance->poll_state_serialize);
	if (instance->poll_state == CXPOLL_STOPPING &&
				instance->adsl_status == 1 && /* stopped */
				instance->line_status == 0) /* down */
		instance->poll_state = CXPOLL_STOPPED;

	if (instance->poll_state == CXPOLL_STOPPED)
		keep_polling = 0;
	mutex_unlock(&instance->poll_state_serialize);

	if (keep_polling)
		schedule_delayed_work(&instance->poll_work,
				round_jiffies_relative(POLL_INTERVAL*HZ));
820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840
}

static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
		     u8 code1, u8 code2, u32 addr, u8 *data, int size)
{
	int ret;
	u8 *buf;
	int offd, offb;
	const int stride = CMD_PACKET_SIZE - 8;

	buf = (u8 *) __get_free_page(GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	offb = offd = 0;
	do {
		int l = min_t(int, stride, size - offd);
		buf[offb++] = fw;
		buf[offb++] = l;
		buf[offb++] = code1;
		buf[offb++] = code2;
A
Al Viro 已提交
841
		put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb));
842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875
		offb += 4;
		addr += l;
		if(l)
			memcpy(buf + offb, data + offd, l);
		if (l < stride)
			memset(buf + offb + l, 0, stride - l);
		offb += stride;
		offd += stride;
		if ((offb >= PAGE_SIZE) || (offd >= size)) {
			ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
					   buf, offb, NULL, CMD_TIMEOUT);
			if (ret < 0) {
				dbg("sending fw %#x failed", fw);
				goto cleanup;
			}
			offb = 0;
		}
	} while(offd < size);
	dbg("sent fw %#x", fw);

	ret = 0;

cleanup:
	free_page((unsigned long) buf);
	return ret;
}

static void cxacru_upload_firmware(struct cxacru_data *instance,
				   const struct firmware *fw,
				   const struct firmware *bp,
				   const struct firmware *cf)
{
	int ret;
	int off;
876 877
	struct usbatm_data *usbatm = instance->usbatm;
	struct usb_device *usb_dev = usbatm->usb_dev;
A
Al Viro 已提交
878 879 880
	__le16 signature[] = { usb_dev->descriptor.idVendor,
			       usb_dev->descriptor.idProduct };
	__le32 val;
881 882 883 884 885 886 887

	dbg("cxacru_upload_firmware");

	/* FirmwarePllFClkValue */
	val = cpu_to_le32(instance->modem_type->pll_f_clk);
	ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4);
	if (ret) {
888
		usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret);
889 890 891 892 893 894 895
		return;
	}

	/* FirmwarePllBClkValue */
	val = cpu_to_le32(instance->modem_type->pll_b_clk);
	ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4);
	if (ret) {
896
		usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret);
897 898 899 900 901 902 903
		return;
	}

	/* Enable SDRAM */
	val = cpu_to_le32(SDRAM_ENA);
	ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4);
	if (ret) {
904
		usb_err(usbatm, "Enable SDRAM failed: %d\n", ret);
905 906 907 908 909 910
		return;
	}

	/* Firmware */
	ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
	if (ret) {
911
		usb_err(usbatm, "Firmware upload failed: %d\n", ret);
912 913 914 915 916 917 918
		return;
	}

	/* Boot ROM patch */
	if (instance->modem_type->boot_rom_patch) {
		ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
		if (ret) {
919
			usb_err(usbatm, "Boot ROM patching failed: %d\n", ret);
920 921 922 923 924 925 926
			return;
		}
	}

	/* Signature */
	ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4);
	if (ret) {
927
		usb_err(usbatm, "Signature storing failed: %d\n", ret);
928 929 930 931 932 933 934 935 936 937 938
		return;
	}

	if (instance->modem_type->boot_rom_patch) {
		val = cpu_to_le32(BR_ADDR);
		ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4);
	}
	else {
		ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0);
	}
	if (ret) {
939
		usb_err(usbatm, "Passing control to firmware failed: %d\n", ret);
940 941 942 943 944 945 946 947 948 949 950 951 952
		return;
	}

	/* Delay to allow firmware to start up. */
	msleep_interruptible(1000);

	usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD));
	usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD));
	usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA));
	usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA));

	ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
	if (ret < 0) {
953
		usb_err(usbatm, "modem failed to initialize: %d\n", ret);
954 955 956 957 958 959
		return;
	}

	/* Load config data (le32), doing one packet at a time */
	if (cf)
		for (off = 0; off < cf->size / 4; ) {
A
Al Viro 已提交
960
			__le32 buf[CMD_PACKET_SIZE / 4 - 1];
961 962 963 964 965 966 967 968 969
			int i, len = min_t(int, cf->size / 4 - off, CMD_PACKET_SIZE / 4 / 2 - 1);
			buf[0] = cpu_to_le32(len);
			for (i = 0; i < len; i++, off++) {
				buf[i * 2 + 1] = cpu_to_le32(off);
				memcpy(buf + i * 2 + 2, cf->data + off * 4, 4);
			}
			ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
					(u8 *) buf, len, NULL, 0);
			if (ret < 0) {
970
				usb_err(usbatm, "load config data failed: %d\n", ret);
971 972 973 974 975 976 977 978 979 980
				return;
			}
		}

	msleep_interruptible(4000);
}

static int cxacru_find_firmware(struct cxacru_data *instance,
				char* phase, const struct firmware **fw_p)
{
981 982
	struct usbatm_data *usbatm = instance->usbatm;
	struct device *dev = &usbatm->usb_intf->dev;
983 984 985 986 987 988
	char buf[16];

	sprintf(buf, "cxacru-%s.bin", phase);
	dbg("cxacru_find_firmware: looking for %s", buf);

	if (request_firmware(fw_p, buf, dev)) {
989
		usb_dbg(usbatm, "no stage %s firmware found\n", phase);
990 991 992
		return -ENOENT;
	}

993
	usb_info(usbatm, "found firmware %s\n", buf);
994 995 996 997 998 999 1000 1001 1002 1003 1004 1005

	return 0;
}

static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
			     struct usb_interface *usb_intf)
{
	const struct firmware *fw, *bp, *cf;
	struct cxacru_data *instance = usbatm_instance->driver_data;

	int ret = cxacru_find_firmware(instance, "fw", &fw);
	if (ret) {
1006
		usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n");
1007 1008 1009 1010 1011 1012
		return ret;
	}

	if (instance->modem_type->boot_rom_patch) {
		ret = cxacru_find_firmware(instance, "bp", &bp);
		if (ret) {
1013
			usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n");
1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039
			release_firmware(fw);
			return ret;
		}
	}

	if (cxacru_find_firmware(instance, "cf", &cf))		/* optional */
		cf = NULL;

	cxacru_upload_firmware(instance, fw, bp, cf);

	if (cf)
		release_firmware(cf);
	if (instance->modem_type->boot_rom_patch)
		release_firmware(bp);
	release_firmware(fw);

	ret = cxacru_card_status(instance);
	if (ret)
		dbg("modem initialisation failed");
	else
		dbg("done setting up the modem");

	return ret;
}

static int cxacru_bind(struct usbatm_data *usbatm_instance,
D
Duncan Sands 已提交
1040
		       struct usb_interface *intf, const struct usb_device_id *id)
1041 1042 1043 1044 1045 1046
{
	struct cxacru_data *instance;
	struct usb_device *usb_dev = interface_to_usbdev(intf);
	int ret;

	/* instance init */
1047
	instance = kzalloc(sizeof(*instance), GFP_KERNEL);
1048 1049 1050 1051 1052 1053 1054
	if (!instance) {
		dbg("cxacru_bind: no memory for instance data");
		return -ENOMEM;
	}

	instance->usbatm = usbatm_instance;
	instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
1055
	memset(instance->card_info, 0, sizeof(instance->card_info));
1056

1057 1058 1059 1060 1061 1062 1063
	mutex_init(&instance->poll_state_serialize);
	instance->poll_state = CXPOLL_STOPPED;
	instance->line_status = -1;
	instance->adsl_status = -1;

	mutex_init(&instance->adsl_state_serialize);

1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098
	instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
	if (!instance->rcv_buf) {
		dbg("cxacru_bind: no memory for rcv_buf");
		ret = -ENOMEM;
		goto fail;
	}
	instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL);
	if (!instance->snd_buf) {
		dbg("cxacru_bind: no memory for snd_buf");
		ret = -ENOMEM;
		goto fail;
	}
	instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!instance->rcv_urb) {
		dbg("cxacru_bind: no memory for rcv_urb");
		ret = -ENOMEM;
		goto fail;
	}
	instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
	if (!instance->snd_urb) {
		dbg("cxacru_bind: no memory for snd_urb");
		ret = -ENOMEM;
		goto fail;
	}

	usb_fill_int_urb(instance->rcv_urb,
			usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
			instance->rcv_buf, PAGE_SIZE,
			cxacru_blocking_completion, &instance->rcv_done, 1);

	usb_fill_int_urb(instance->snd_urb,
			usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
			instance->snd_buf, PAGE_SIZE,
			cxacru_blocking_completion, &instance->snd_done, 4);

1099
	mutex_init(&instance->cm_serialize);
1100

D
David Howells 已提交
1101
	INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status);
1102 1103 1104

	usbatm_instance->driver_data = instance;

D
Duncan Sands 已提交
1105
	usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT);
1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122

	return 0;

 fail:
	free_page((unsigned long) instance->snd_buf);
	free_page((unsigned long) instance->rcv_buf);
	usb_free_urb(instance->snd_urb);
	usb_free_urb(instance->rcv_urb);
	kfree(instance);

	return ret;
}

static void cxacru_unbind(struct usbatm_data *usbatm_instance,
		struct usb_interface *intf)
{
	struct cxacru_data *instance = usbatm_instance->driver_data;
1123
	int is_polling = 1;
1124 1125 1126 1127 1128 1129 1130 1131

	dbg("cxacru_unbind entered");

	if (!instance) {
		dbg("cxacru_unbind: NULL instance!");
		return;
	}

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	mutex_lock(&instance->poll_state_serialize);
	BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN);

	/* ensure that status polling continues unless
	 * it has already stopped */
	if (instance->poll_state == CXPOLL_STOPPED)
		is_polling = 0;

	/* stop polling from being stopped or started */
	instance->poll_state = CXPOLL_SHUTDOWN;
	mutex_unlock(&instance->poll_state_serialize);

	if (is_polling)
		cancel_rearming_delayed_work(&instance->poll_work);
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	usb_kill_urb(instance->snd_urb);
	usb_kill_urb(instance->rcv_urb);
	usb_free_urb(instance->snd_urb);
	usb_free_urb(instance->rcv_urb);

	free_page((unsigned long) instance->snd_buf);
	free_page((unsigned long) instance->rcv_buf);
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	kfree(instance);

	usbatm_instance->driver_data = NULL;
}

static const struct cxacru_modem_type cxacru_cafe = {
	.pll_f_clk = 0x02d874df,
	.pll_b_clk = 0x0196a51a,
	.boot_rom_patch = 1,
};

static const struct cxacru_modem_type cxacru_cb00 = {
	.pll_f_clk = 0x5,
	.pll_b_clk = 0x3,
	.boot_rom_patch = 0,
};

static const struct usb_device_id cxacru_usb_ids[] = {
	{ /* V = Conexant			P = ADSL modem (Euphrates project)	*/
		USB_DEVICE(0x0572, 0xcafe),	.driver_info = (unsigned long) &cxacru_cafe
	},
	{ /* V = Conexant			P = ADSL modem (Hasbani project)	*/
		USB_DEVICE(0x0572, 0xcb00),	.driver_info = (unsigned long) &cxacru_cb00
	},
	{ /* V = Conexant			P = ADSL modem				*/
		USB_DEVICE(0x0572, 0xcb01),	.driver_info = (unsigned long) &cxacru_cb00
	},
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	{ /* V = Conexant			P = ADSL modem (Well PTI-800) */
		USB_DEVICE(0x0572, 0xcb02),	.driver_info = (unsigned long) &cxacru_cb00
	},
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	{ /* V = Conexant			P = ADSL modem				*/
		USB_DEVICE(0x0572, 0xcb06),	.driver_info = (unsigned long) &cxacru_cb00
	},
D
Duncan Sands 已提交
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	{ /* V = Conexant			P = ADSL modem (ZTE ZXDSL 852)		*/
		USB_DEVICE(0x0572, 0xcb07),	.driver_info = (unsigned long) &cxacru_cb00
	},
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	{ /* V = Olitec				P = ADSL modem version 2		*/
		USB_DEVICE(0x08e3, 0x0100),	.driver_info = (unsigned long) &cxacru_cafe
	},
	{ /* V = Olitec				P = ADSL modem version 3		*/
		USB_DEVICE(0x08e3, 0x0102),	.driver_info = (unsigned long) &cxacru_cb00
	},
	{ /* V = Trust/Amigo Technology Co.	P = AMX-CA86U				*/
		USB_DEVICE(0x0eb0, 0x3457),	.driver_info = (unsigned long) &cxacru_cafe
	},
	{ /* V = Zoom				P = 5510				*/
		USB_DEVICE(0x1803, 0x5510),	.driver_info = (unsigned long) &cxacru_cb00
	},
	{ /* V = Draytek			P = Vigor 318				*/
		USB_DEVICE(0x0675, 0x0200),	.driver_info = (unsigned long) &cxacru_cb00
	},
	{ /* V = Zyxel				P = 630-C1 aka OMNI ADSL USB (Annex A)	*/
		USB_DEVICE(0x0586, 0x330a),	.driver_info = (unsigned long) &cxacru_cb00
	},
	{ /* V = Zyxel				P = 630-C3 aka OMNI ADSL USB (Annex B)	*/
		USB_DEVICE(0x0586, 0x330b),	.driver_info = (unsigned long) &cxacru_cb00
	},
	{ /* V = Aethra				P = Starmodem UM1020			*/
		USB_DEVICE(0x0659, 0x0020),	.driver_info = (unsigned long) &cxacru_cb00
	},
	{ /* V = Aztech Systems			P = ? AKA Pirelli AUA-010		*/
		USB_DEVICE(0x0509, 0x0812),	.driver_info = (unsigned long) &cxacru_cb00
	},
	{ /* V = Netopia			P = Cayman 3341(Annex A)/3351(Annex B)	*/
		USB_DEVICE(0x100d, 0xcb01),	.driver_info = (unsigned long) &cxacru_cb00
	},
	{ /* V = Netopia			P = Cayman 3342(Annex A)/3352(Annex B)	*/
		USB_DEVICE(0x100d, 0x3342),	.driver_info = (unsigned long) &cxacru_cb00
	},
	{}
};

MODULE_DEVICE_TABLE(usb, cxacru_usb_ids);

static struct usbatm_driver cxacru_driver = {
	.driver_name	= cxacru_driver_name,
	.bind		= cxacru_bind,
	.heavy_init	= cxacru_heavy_init,
	.unbind		= cxacru_unbind,
	.atm_start	= cxacru_atm_start,
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	.atm_stop	= cxacru_remove_device_files,
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	.bulk_in	= CXACRU_EP_DATA,
	.bulk_out	= CXACRU_EP_DATA,
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	.rx_padding	= 3,
	.tx_padding	= 11,
};

static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
{
	return usbatm_usb_probe(intf, id, &cxacru_driver);
}

static struct usb_driver cxacru_usb_driver = {
	.name		= cxacru_driver_name,
	.probe		= cxacru_usb_probe,
	.disconnect	= usbatm_usb_disconnect,
	.id_table	= cxacru_usb_ids
};

static int __init cxacru_init(void)
{
	return usb_register(&cxacru_usb_driver);
}

static void __exit cxacru_cleanup(void)
{
	usb_deregister(&cxacru_usb_driver);
}

module_init(cxacru_init);
module_exit(cxacru_cleanup);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);