| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Duncan Sands | 3548 | 55.72% | 7 | 16.28% |
| Simon Arlott | 2315 | 36.35% | 14 | 32.56% |
| Greg Kroah-Hartman | 237 | 3.72% | 6 | 13.95% |
| Ondrej Zary | 75 | 1.18% | 1 | 2.33% |
| Kees Cook | 61 | 0.96% | 1 | 2.33% |
| Karl Hiramoto | 36 | 0.57% | 1 | 2.33% |
| David Howells | 25 | 0.39% | 1 | 2.33% |
| Dan Carpenter | 19 | 0.30% | 2 | 4.65% |
| Dave Jones | 18 | 0.28% | 1 | 2.33% |
| Al Viro | 14 | 0.22% | 1 | 2.33% |
| Arjan van de Ven | 6 | 0.09% | 1 | 2.33% |
| Jiri Slaby | 3 | 0.05% | 1 | 2.33% |
| Allen Pais | 3 | 0.05% | 1 | 2.33% |
| Oliver Neukum | 3 | 0.05% | 1 | 2.33% |
| Gustavo A. R. Silva | 2 | 0.03% | 1 | 2.33% |
| Johannes Berg | 1 | 0.02% | 1 | 2.33% |
| David Woodhouse | 1 | 0.02% | 1 | 2.33% |
| Tejun Heo | 1 | 0.02% | 1 | 2.33% |
| Total | 6368 | 43 |
// 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; /* contol 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 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) { 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 snprintf(buf, PAGE_SIZE, "%u\n", value); return snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%u\n", value); return snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%u\n", value); return snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%u\n", value); return snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%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 snprintf(buf, PAGE_SIZE, "%u\n", value); return snprintf(buf, PAGE_SIZE, "%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; /* fall through */ 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; /* fall through */ 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); printk(KERN_INFO "%s%d: %s %pM\n", atm_dev->type, atm_dev->number, usbatm_instance->description, atm_dev->esi); 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_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; } } 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");
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