diff options
Diffstat (limited to 'drivers/usb/atm/cxacru.c')
| -rw-r--r-- | drivers/usb/atm/cxacru.c | 1378 |
1 files changed, 1378 insertions, 0 deletions
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c new file mode 100644 index 0000000000..4ce7cba2b4 --- /dev/null +++ b/drivers/usb/atm/cxacru.c @@ -0,0 +1,1378 @@ +// SPDX-License-Identifier: GPL-2.0+ +/****************************************************************************** + * 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) + * Copyright (C) 2007 Simon Arlott + * Copyright (C) 2009 Simon Arlott + ******************************************************************************/ + +/* + * 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/device.h> +#include <linux/firmware.h> +#include <linux/mutex.h> +#include <asm/unaligned.h> + +#include "usbatm.h" + +#define DRIVER_AUTHOR "Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott" +#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)? */ +#define CMD_MAX_CONFIG ((CMD_PACKET_SIZE / 4 - 1) / 2) + +/* 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 */ +#define POLL_INTERVAL 1 /* secs */ + +/* 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, +}; + +/* commands for interaction with the flash memory + * + * read: response is the contents of the first 60 bytes of flash memory + * write: request contains the 60 bytes of data to write to flash memory + * response is the contents of the first 60 bytes of flash memory + * + * layout: PP PP VV VV MM MM MM MM MM MM ?? ?? SS SS SS SS SS SS SS SS + * SS SS SS SS SS SS SS SS 00 00 00 00 00 00 00 00 00 00 00 00 + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 + * + * P: le16 USB Product ID + * V: le16 USB Vendor ID + * M: be48 MAC Address + * S: le16 ASCII Serial Number + */ +enum cxacru_cm_flash { + CM_FLASH_READ = 0xa1, + CM_FLASH_WRITE = 0xa2 +}; + +/* 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, +}; + +enum cxacru_poll_state { + CXPOLL_STOPPING, + CXPOLL_STOPPED, + CXPOLL_POLLING, + CXPOLL_SHUTDOWN +}; + +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; + struct mutex adsl_state_serialize; + int adsl_status; + struct delayed_work poll_work; + u32 card_info[CXINF_MAX]; + struct mutex poll_state_serialize; + enum cxacru_poll_state poll_state; + + /* control handles */ + struct mutex cm_serialize; + u8 *rcv_buf; + u8 *snd_buf; + struct urb *rcv_urb; + struct urb *snd_urb; + struct completion rcv_done; + struct completion snd_done; +}; + +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); + +/* Card info exported through sysfs */ +#define CXACRU__ATTR_INIT(_name) \ +static DEVICE_ATTR_RO(_name) + +#define CXACRU_CMD_INIT(_name) \ +static DEVICE_ATTR_RW(_name) + +#define CXACRU_SET_INIT(_name) \ +static DEVICE_ATTR_WO(_name) + +#define CXACRU_ATTR_INIT(_value, _type, _name) \ +static ssize_t _name##_show(struct device *dev, \ + struct device_attribute *attr, char *buf) \ +{ \ + struct cxacru_data *instance = to_usbatm_driver_data(\ + to_usb_interface(dev)); \ +\ + if (instance == NULL) \ + return -ENODEV; \ +\ + 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) +#define CXACRU_CMD_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) +#define CXACRU_SET_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) +#define CXACRU__ATTR_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name) + +#define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name) +#define CXACRU_CMD_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) +#define CXACRU_SET_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) +#define CXACRU__ATTR_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name) + +static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf) +{ + return sprintf(buf, "%u\n", value); +} + +static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf) +{ + return sprintf(buf, "%d\n", value); +} + +static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf) +{ + if (likely(value >= 0)) { + return snprintf(buf, PAGE_SIZE, "%u.%02u\n", + value / 100, value % 100); + } else { + value = -value; + return snprintf(buf, PAGE_SIZE, "-%u.%02u\n", + value / 100, value % 100); + } +} + +static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf) +{ + static char *str[] = { "no", "yes" }; + + if (unlikely(value >= ARRAY_SIZE(str))) + return sprintf(buf, "%u\n", value); + return sprintf(buf, "%s\n", str[value]); +} + +static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf) +{ + static char *str[] = { NULL, "not connected", "connected", "lost" }; + + if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL)) + return sprintf(buf, "%u\n", value); + return sprintf(buf, "%s\n", str[value]); +} + +static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf) +{ + static char *str[] = { "down", "attempting to activate", + "training", "channel analysis", "exchange", "up", + "waiting", "initialising" + }; + if (unlikely(value >= ARRAY_SIZE(str))) + return sprintf(buf, "%u\n", value); + return sprintf(buf, "%s\n", str[value]); +} + +static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf) +{ + static char *str[] = { + "", + "ANSI T1.413", + "ITU-T G.992.1 (G.DMT)", + "ITU-T G.992.2 (G.LITE)" + }; + if (unlikely(value >= ARRAY_SIZE(str))) + return sprintf(buf, "%u\n", value); + return sprintf(buf, "%s\n", str[value]); +} + +/* + * 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 mac_address_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct cxacru_data *instance = to_usbatm_driver_data( + to_usb_interface(dev)); + + if (instance == NULL || instance->usbatm->atm_dev == NULL) + return -ENODEV; + + return sprintf(buf, "%pM\n", instance->usbatm->atm_dev->esi); +} + +static ssize_t adsl_state_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + static char *str[] = { "running", "stopped" }; + struct cxacru_data *instance = to_usbatm_driver_data( + to_usb_interface(dev)); + u32 value; + + if (instance == NULL) + return -ENODEV; + + value = instance->card_info[CXINF_LINE_STARTABLE]; + if (unlikely(value >= ARRAY_SIZE(str))) + return sprintf(buf, "%u\n", value); + return sprintf(buf, "%s\n", str[value]); +} + +static ssize_t adsl_state_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct cxacru_data *instance = to_usbatm_driver_data( + to_usb_interface(dev)); + 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 (instance == NULL) + return -ENODEV; + + 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(instance->usbatm, "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(instance->usbatm, "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; + fallthrough; + 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; +} + +/* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */ + +static ssize_t adsl_config_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct cxacru_data *instance = to_usbatm_driver_data( + to_usb_interface(dev)); + int len = strlen(buf); + int ret, pos, num; + __le32 data[CMD_PACKET_SIZE / 4]; + + if (!capable(CAP_NET_ADMIN)) + return -EACCES; + + if (instance == NULL) + return -ENODEV; + + pos = 0; + num = 0; + while (pos < len) { + int tmp; + u32 index; + u32 value; + + ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); + if (ret < 2) + return -EINVAL; + if (index > 0x7f) + return -EINVAL; + if (tmp < 0 || tmp > len - pos) + return -EINVAL; + pos += tmp; + + /* skip trailing newline */ + if (buf[pos] == '\n' && pos == len-1) + pos++; + + data[num * 2 + 1] = cpu_to_le32(index); + data[num * 2 + 2] = cpu_to_le32(value); + num++; + + /* send config values when data buffer is full + * or no more data + */ + if (pos >= len || num >= CMD_MAX_CONFIG) { + char log[CMD_MAX_CONFIG * 12 + 1]; /* %02x=%08x */ + + data[0] = cpu_to_le32(num); + ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET, + (u8 *) data, 4 + num * 8, NULL, 0); + if (ret < 0) { + atm_err(instance->usbatm, + "set card data returned %d\n", ret); + return -EIO; + } + + for (tmp = 0; tmp < num; tmp++) + snprintf(log + tmp*12, 13, " %02x=%08x", + le32_to_cpu(data[tmp * 2 + 1]), + le32_to_cpu(data[tmp * 2 + 2])); + atm_info(instance->usbatm, "config%s\n", log); + num = 0; + } + } + + return len; +} + +/* + * 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); \ +CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \ +CXACRU_CMD_##_action( adsl_state); \ +CXACRU_SET_##_action( adsl_config); + +CXACRU_ALL_FILES(INIT); + +static struct attribute *cxacru_attrs[] = { + &dev_attr_adsl_config.attr, + &dev_attr_adsl_state.attr, + &dev_attr_adsl_controller_version.attr, + &dev_attr_adsl_headend_environment.attr, + &dev_attr_adsl_headend.attr, + &dev_attr_modulation.attr, + &dev_attr_line_startable.attr, + &dev_attr_downstream_hec_errors.attr, + &dev_attr_upstream_hec_errors.attr, + &dev_attr_downstream_fec_errors.attr, + &dev_attr_upstream_fec_errors.attr, + &dev_attr_downstream_crc_errors.attr, + &dev_attr_upstream_crc_errors.attr, + &dev_attr_startup_attempts.attr, + &dev_attr_downstream_bits_per_frame.attr, + &dev_attr_upstream_bits_per_frame.attr, + &dev_attr_transmitter_power.attr, + &dev_attr_downstream_attenuation.attr, + &dev_attr_upstream_attenuation.attr, + &dev_attr_downstream_snr_margin.attr, + &dev_attr_upstream_snr_margin.attr, + &dev_attr_mac_address.attr, + &dev_attr_line_status.attr, + &dev_attr_link_status.attr, + &dev_attr_upstream_rate.attr, + &dev_attr_downstream_rate.attr, + NULL, +}; +ATTRIBUTE_GROUPS(cxacru); + +/* the following three functions are stolen from drivers/usb/core/message.c */ +static void cxacru_blocking_completion(struct urb *urb) +{ + complete(urb->context); +} + +struct cxacru_timer { + struct timer_list timer; + struct urb *urb; +}; + +static void cxacru_timeout_kill(struct timer_list *t) +{ + struct cxacru_timer *timer = from_timer(timer, t, timer); + + usb_unlink_urb(timer->urb); +} + +static int cxacru_start_wait_urb(struct urb *urb, struct completion *done, + int *actual_length) +{ + struct cxacru_timer timer = { + .urb = urb, + }; + + timer_setup_on_stack(&timer.timer, cxacru_timeout_kill, 0); + mod_timer(&timer.timer, jiffies + msecs_to_jiffies(CMD_TIMEOUT)); + wait_for_completion(done); + del_timer_sync(&timer.timer); + destroy_timer_on_stack(&timer.timer); + + if (actual_length) + *actual_length = urb->actual_length; + return urb->status; /* must read status after completion */ +} + +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) { + if (printk_ratelimit()) + usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n", + wbuflen, rbuflen); + ret = -ENOMEM; + goto err; + } + + mutex_lock(&instance->cm_serialize); + + /* submit reading urb before the writing one */ + init_completion(&instance->rcv_done); + ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL); + if (ret < 0) { + if (printk_ratelimit()) + usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n", + cm, ret); + 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) { + if (printk_ratelimit()) + usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n", + cm, ret); + goto fail; + } + + ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL); + if (ret < 0) { + if (printk_ratelimit()) + usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret); + goto fail; + } + + ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen); + if (ret < 0) { + if (printk_ratelimit()) + usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret); + goto fail; + } + if (actlen % CMD_PACKET_SIZE || !actlen) { + if (printk_ratelimit()) + usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n", + cm, actlen); + 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) { + if (printk_ratelimit()) + usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n", + rbuf[offb], cm); + ret = -EIO; + goto fail; + } + if (rbuf[offb + 1] != CM_STATUS_SUCCESS) { + if (printk_ratelimit()) + usb_err(instance->usbatm, "response to cm %#x failed: %#x\n", + cm, rbuf[offb + 1]); + ret = -EIO; + goto fail; + } + if (offd >= rsize) + break; + memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd)); + offd += stride; + } + + ret = offd; + usb_dbg(instance->usbatm, "cm %#x\n", cm); +fail: + mutex_unlock(&instance->cm_serialize); +err: + return ret; +} + +static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm, + u32 *data, int size) +{ + int ret, len; + __le32 *buf; + int offb; + unsigned int 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 < 0 || l > stride || l > (len - offb) / 2) { + if (printk_ratelimit()) + usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n", + cm, l); + ret = -EIO; + goto cleanup; + } + while (l--) { + offd = le32_to_cpu(buf[offb++]); + if (offd >= size) { + if (printk_ratelimit()) + usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n", + offd, cm); + 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 */ + usb_dbg(instance->usbatm, "cxacru_adsl_start: CARD_GET_STATUS returned %d\n", ret); + return ret; + } + return 0; +} + +static int cxacru_atm_start(struct usbatm_data *usbatm_instance, + struct atm_dev *atm_dev) +{ + struct cxacru_data *instance = usbatm_instance->driver_data; + struct usb_interface *intf = usbatm_instance->usb_intf; + int ret; + int start_polling = 1; + + dev_dbg(&intf->dev, "%s\n", __func__); + + /* 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) { + atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret); + return ret; + } + + /* start ADSL */ + mutex_lock(&instance->adsl_state_serialize); + ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0); + if (ret < 0) + atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret); + + /* Start status 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; + fallthrough; + 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); + return 0; +} + +static void cxacru_poll_status(struct work_struct *work) +{ + struct cxacru_data *instance = + container_of(work, struct cxacru_data, poll_work.work); + u32 buf[CXINF_MAX] = {}; + struct usbatm_data *usbatm = instance->usbatm; + struct atm_dev *atm_dev = usbatm->atm_dev; + int keep_polling = 1; + int ret; + + ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX); + if (ret < 0) { + 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); + goto reschedule; + } + + memcpy(instance->card_info, buf, sizeof(instance->card_info)); + + if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) { + instance->adsl_status = buf[CXINF_LINE_STARTABLE]; + + switch (instance->adsl_status) { + case 0: + atm_info(usbatm, "ADSL state: running\n"); + break; + + case 1: + atm_info(usbatm, "ADSL state: stopped\n"); + break; + + default: + atm_info(usbatm, "Unknown adsl status %02x\n", instance->adsl_status); + break; + } + } + + 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_change(atm_dev, ATM_PHY_SIG_LOST); + atm_info(usbatm, "ADSL line: down\n"); + break; + + case 1: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); + atm_info(usbatm, "ADSL line: attempting to activate\n"); + break; + + case 2: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); + atm_info(usbatm, "ADSL line: training\n"); + break; + + case 3: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); + atm_info(usbatm, "ADSL line: channel analysis\n"); + break; + + case 4: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); + atm_info(usbatm, "ADSL line: exchange\n"); + break; + + case 5: + atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424; + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND); + + atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n", + buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]); + break; + + case 6: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); + atm_info(usbatm, "ADSL line: waiting\n"); + break; + + case 7: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); + atm_info(usbatm, "ADSL line: initializing\n"); + break; + + default: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN); + atm_info(usbatm, "Unknown line state %02x\n", instance->line_status); + break; + } +reschedule: + + 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)); +} + +static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw, + u8 code1, u8 code2, u32 addr, const 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; + put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb)); + 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) { + dev_dbg(&usb_dev->dev, "sending fw %#x failed\n", fw); + goto cleanup; + } + offb = 0; + } + } while (offd < size); + dev_dbg(&usb_dev->dev, "sent fw %#x\n", 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) +{ + int ret; + struct usbatm_data *usbatm = instance->usbatm; + struct usb_device *usb_dev = usbatm->usb_dev; + __le16 signature[] = { usb_dev->descriptor.idVendor, + usb_dev->descriptor.idProduct }; + __le32 val; + + usb_dbg(usbatm, "%s\n", __func__); + + /* 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) { + usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret); + 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) { + usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret); + 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) { + usb_err(usbatm, "Enable SDRAM failed: %d\n", ret); + return; + } + + /* Firmware */ + usb_info(usbatm, "loading firmware\n"); + ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size); + if (ret) { + usb_err(usbatm, "Firmware upload failed: %d\n", ret); + return; + } + + /* Boot ROM patch */ + if (instance->modem_type->boot_rom_patch) { + usb_info(usbatm, "loading boot ROM patch\n"); + ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size); + if (ret) { + usb_err(usbatm, "Boot ROM patching failed: %d\n", ret); + return; + } + } + + /* Signature */ + ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4); + if (ret) { + usb_err(usbatm, "Signature storing failed: %d\n", ret); + return; + } + + usb_info(usbatm, "starting device\n"); + 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) { + usb_err(usbatm, "Passing control to firmware failed: %d\n", ret); + 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) { + usb_err(usbatm, "modem failed to initialize: %d\n", ret); + return; + } +} + +static int cxacru_find_firmware(struct cxacru_data *instance, + char *phase, const struct firmware **fw_p) +{ + struct usbatm_data *usbatm = instance->usbatm; + struct device *dev = &usbatm->usb_intf->dev; + char buf[16]; + + sprintf(buf, "cxacru-%s.bin", phase); + usb_dbg(usbatm, "cxacru_find_firmware: looking for %s\n", buf); + + if (request_firmware(fw_p, buf, dev)) { + usb_dbg(usbatm, "no stage %s firmware found\n", phase); + return -ENOENT; + } + + usb_info(usbatm, "found firmware %s\n", buf); + + return 0; +} + +static int cxacru_heavy_init(struct usbatm_data *usbatm_instance, + struct usb_interface *usb_intf) +{ + const struct firmware *fw, *bp; + struct cxacru_data *instance = usbatm_instance->driver_data; + int ret = cxacru_find_firmware(instance, "fw", &fw); + + if (ret) { + usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n"); + return ret; + } + + if (instance->modem_type->boot_rom_patch) { + ret = cxacru_find_firmware(instance, "bp", &bp); + if (ret) { + usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n"); + release_firmware(fw); + return ret; + } + } + + cxacru_upload_firmware(instance, fw, bp); + + if (instance->modem_type->boot_rom_patch) + release_firmware(bp); + release_firmware(fw); + + ret = cxacru_card_status(instance); + if (ret) + usb_dbg(usbatm_instance, "modem initialisation failed\n"); + else + usb_dbg(usbatm_instance, "done setting up the modem\n"); + + return ret; +} + +static int cxacru_bind(struct usbatm_data *usbatm_instance, + struct usb_interface *intf, const struct usb_device_id *id) +{ + struct cxacru_data *instance; + struct usb_device *usb_dev = interface_to_usbdev(intf); + struct usb_host_endpoint *cmd_ep = usb_dev->ep_in[CXACRU_EP_CMD]; + int ret; + + /* instance init */ + instance = kzalloc(sizeof(*instance), GFP_KERNEL); + if (!instance) + return -ENOMEM; + + instance->usbatm = usbatm_instance; + instance->modem_type = (struct cxacru_modem_type *) id->driver_info; + + 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); + + instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL); + if (!instance->rcv_buf) { + usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_buf\n"); + ret = -ENOMEM; + goto fail; + } + instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL); + if (!instance->snd_buf) { + usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_buf\n"); + ret = -ENOMEM; + goto fail; + } + instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!instance->rcv_urb) { + ret = -ENOMEM; + goto fail; + } + instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!instance->snd_urb) { + ret = -ENOMEM; + goto fail; + } + + if (!cmd_ep) { + usb_dbg(usbatm_instance, "cxacru_bind: no command endpoint\n"); + ret = -ENODEV; + goto fail; + } + + if ((cmd_ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) + == USB_ENDPOINT_XFER_INT) { + 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); + } else { + usb_fill_bulk_urb(instance->rcv_urb, + usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD), + instance->rcv_buf, PAGE_SIZE, + cxacru_blocking_completion, &instance->rcv_done); + + usb_fill_bulk_urb(instance->snd_urb, + usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD), + instance->snd_buf, PAGE_SIZE, + cxacru_blocking_completion, &instance->snd_done); + } + + mutex_init(&instance->cm_serialize); + + INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status); + + usbatm_instance->driver_data = instance; + + usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT); + + 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; + int is_polling = 1; + + usb_dbg(usbatm_instance, "cxacru_unbind entered\n"); + + if (!instance) { + usb_dbg(usbatm_instance, "cxacru_unbind: NULL instance!\n"); + return; + } + + 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_delayed_work_sync(&instance->poll_work); + + 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); + + 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 + }, + { /* V = Conexant P = ADSL modem (Well PTI-800) */ + USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00 + }, + { /* V = Conexant P = ADSL modem */ + USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00 + }, + { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */ + USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00 + }, + { /* 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, + .bulk_in = CXACRU_EP_DATA, + .bulk_out = CXACRU_EP_DATA, + .rx_padding = 3, + .tx_padding = 11, +}; + +static int cxacru_usb_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_device *usb_dev = interface_to_usbdev(intf); + char buf[15]; + + /* Avoid ADSL routers (cx82310_eth). + * Abort if bDeviceClass is 0xff and iProduct is "USB NET CARD". + */ + if (usb_dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC + && usb_string(usb_dev, usb_dev->descriptor.iProduct, + buf, sizeof(buf)) > 0) { + if (!strcmp(buf, "USB NET CARD")) { + dev_info(&intf->dev, "ignoring cx82310_eth device\n"); + return -ENODEV; + } + } + + 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, + .dev_groups = cxacru_groups, +}; + +module_usb_driver(cxacru_usb_driver); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); |