v4.19.13 snapshot.
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
new file mode 100644
index 0000000..e57a2be
--- /dev/null
+++ b/drivers/usb/atm/cxacru.c
@@ -0,0 +1,1374 @@
+// 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);
+
+/* 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 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
+}
+
+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;
+ }
+
+ #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
+
+ /* 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;
+
+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;
+}
+
+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,
+ .atm_stop = cxacru_remove_device_files,
+ .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
+};
+
+module_usb_driver(cxacru_usb_driver);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");