diff options
Diffstat (limited to 'drivers/usb/atm')
| -rw-r--r-- | drivers/usb/atm/Kconfig | 64 | ||||
| -rw-r--r-- | drivers/usb/atm/Makefile | 9 | ||||
| -rw-r--r-- | drivers/usb/atm/cxacru.c | 1380 | ||||
| -rw-r--r-- | drivers/usb/atm/speedtch.c | 1275 | ||||
| -rw-r--r-- | drivers/usb/atm/ueagle-atm.c | 2807 | ||||
| -rw-r--r-- | drivers/usb/atm/usb_atm.c | 1188 | ||||
| -rw-r--r-- | drivers/usb/atm/usb_atm.h | 176 | ||||
| -rw-r--r-- | drivers/usb/atm/usbatm.c | 1344 | ||||
| -rw-r--r-- | drivers/usb/atm/usbatm.h | 199 | ||||
| -rw-r--r-- | drivers/usb/atm/xusbatm.c | 229 |
10 files changed, 6708 insertions, 1963 deletions
diff --git a/drivers/usb/atm/Kconfig b/drivers/usb/atm/Kconfig index 0d9f5379b8c..0f922942a07 100644 --- a/drivers/usb/atm/Kconfig +++ b/drivers/usb/atm/Kconfig @@ -1,30 +1,68 @@ # -# USB ATM driver configuration +# USB/ATM DSL configuration # -comment "USB ATM/DSL drivers" - depends on USB -config USB_ATM - tristate "Generic USB ATM/DSL core I/O support" - depends on USB && ATM +menuconfig USB_ATM + tristate "USB DSL modem support" + depends on ATM select CRC32 default n help - This provides a library which is used for packet I/O by USB DSL - modems, such as the SpeedTouch driver below. + Say Y here if you want to connect a USB Digital Subscriber Line (DSL) + modem to your computer's USB port. You will then need to choose your + modem from the list below. To compile this driver as a module, choose M here: the - module will be called usb_atm. + module will be called usbatm. + +if USB_ATM config USB_SPEEDTOUCH - tristate "Alcatel Speedtouch USB support" - depends on USB && ATM - select USB_ATM + tristate "Speedtouch USB support" + select FW_LOADER help - Say Y here if you have an Alcatel SpeedTouch USB or SpeedTouch 330 + Say Y here if you have an SpeedTouch USB or SpeedTouch 330 modem. In order to use your modem you will need to install the two parts of the firmware, extracted by the user space tools; see <http://www.linux-usb.org/SpeedTouch/> for details. To compile this driver as a module, choose M here: the module will be called speedtch. + +config USB_CXACRU + tristate "Conexant AccessRunner USB support" + select FW_LOADER + help + Say Y here if you have an ADSL USB modem based on the Conexant + AccessRunner chipset. In order to use your modem you will need to + install the firmware, extracted by the user space tools; see + <http://accessrunner.sourceforge.net/> for details. + + To compile this driver as a module, choose M here: the + module will be called cxacru. + +config USB_UEAGLEATM + tristate "ADI 930 and eagle USB DSL modem" + select FW_LOADER + help + Say Y here if you have an ADSL USB modem based on the ADI 930 + or eagle chipset. In order to use your modem you will need to + install firmwares and CMV (Command Management Variables); see + <https://gna.org/projects/ueagleatm/> for details. + + To compile this driver as a module, choose M here: the + module will be called ueagle-atm. + +config USB_XUSBATM + tristate "Other USB DSL modem support" + help + Say Y here if you have a DSL USB modem not explicitly supported by + another USB DSL drivers. In order to use your modem you will need to + pass the vendor ID, product ID, and endpoint numbers for transmission + and reception as module parameters. You may need to initialize + the modem using a user space utility (a firmware loader for example). + + To compile this driver as a module, choose M here: the + module will be called xusbatm. + +endif # USB_ATM diff --git a/drivers/usb/atm/Makefile b/drivers/usb/atm/Makefile index 9213b8b9758..ac278946b06 100644 --- a/drivers/usb/atm/Makefile +++ b/drivers/usb/atm/Makefile @@ -1,7 +1,8 @@ # -# Makefile for the rest of the USB drivers -# (the ones that don't fit into any other categories) +# Makefile for USB ATM/xDSL drivers # - -obj-$(CONFIG_USB_ATM) += usb_atm.o +obj-$(CONFIG_USB_CXACRU) += cxacru.o obj-$(CONFIG_USB_SPEEDTOUCH) += speedtch.o +obj-$(CONFIG_USB_UEAGLEATM) += ueagle-atm.o +obj-$(CONFIG_USB_ATM) += usbatm.o +obj-$(CONFIG_USB_XUSBATM) += xusbatm.o diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c new file mode 100644 index 00000000000..813d4d3a51c --- /dev/null +++ b/drivers/usb/atm/cxacru.c @@ -0,0 +1,1380 @@ +/****************************************************************************** + * 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 + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + ******************************************************************************/ + +/* + * Credit is due for Josep Comas, who created the original patch to speedtch.c + * to support the different padding used by the AccessRunner (now generalized + * into usbatm), and the userspace firmware loading utility. + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/kernel.h> +#include <linux/timer.h> +#include <linux/errno.h> +#include <linux/slab.h> +#include <linux/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_VERSION "0.4" +#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(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL) + +#define CXACRU_CMD_INIT(_name) \ +static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \ + cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name) + +#define CXACRU_SET_INIT(_name) \ +static DEVICE_ATTR(_name, S_IWUSR, \ + NULL, cxacru_sysfs_store_##_name) + +#define CXACRU_ATTR_INIT(_value, _type, _name) \ +static ssize_t cxacru_sysfs_show_##_name(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 cxacru_sysfs_show_mac_address(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 cxacru_sysfs_show_adsl_state(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 cxacru_sysfs_store_adsl_state(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; + 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 cxacru_sysfs_store_adsl_config(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 < 0 || index > 0x7f) + 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); +} + +static void cxacru_timeout_kill(unsigned long data) +{ + usb_unlink_urb((struct urb *) data); +} + +static int cxacru_start_wait_urb(struct urb *urb, struct completion *done, + int *actual_length) +{ + struct timer_list timer; + + init_timer(&timer); + timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT); + timer.data = (unsigned long) urb; + timer.function = cxacru_timeout_kill; + add_timer(&timer); + wait_for_completion(done); + del_timer_sync(&timer); + + if (actual_length) + *actual_length = urb->actual_length; + 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; + 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) { + usb_dbg(usbatm_instance, "cxacru_bind: no memory for instance data\n"); + 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) { + usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_urb\n"); + ret = -ENOMEM; + goto fail; + } + instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!instance->snd_urb) { + usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_urb\n"); + 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"); +MODULE_VERSION(DRIVER_VERSION); diff --git a/drivers/usb/atm/speedtch.c b/drivers/usb/atm/speedtch.c index 2a1697bfd69..0dc8c06a7b5 100644 --- a/drivers/usb/atm/speedtch.c +++ b/drivers/usb/atm/speedtch.c @@ -5,6 +5,8 @@ * Copyright (C) 2003, Duncan Sands * Copyright (C) 2004, David Woodhouse * + * Based on "modem_run.c", copyright (C) 2001, Benoit Papillault + * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) @@ -21,467 +23,259 @@ * ******************************************************************************/ +#include <asm/page.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/firmware.h> +#include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/gfp.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/errno.h> -#include <linux/proc_fs.h> #include <linux/slab.h> -#include <linux/wait.h> -#include <linux/list.h> -#include <asm/processor.h> -#include <asm/uaccess.h> -#include <linux/smp_lock.h> -#include <linux/interrupt.h> -#include <linux/atm.h> -#include <linux/atmdev.h> -#include <linux/crc32.h> -#include <linux/init.h> -#include <linux/firmware.h> - -#include "usb_atm.h" +#include <linux/stat.h> +#include <linux/timer.h> +#include <linux/types.h> +#include <linux/usb/ch9.h> +#include <linux/workqueue.h> -#if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE) -# define USE_FW_LOADER -#endif +#include "usbatm.h" #define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <duncan.sands@free.fr>" -#define DRIVER_VERSION "1.8" +#define DRIVER_VERSION "1.10" #define DRIVER_DESC "Alcatel SpeedTouch USB driver version " DRIVER_VERSION static const char speedtch_driver_name[] = "speedtch"; -#define SPEEDTOUCH_VENDORID 0x06b9 -#define SPEEDTOUCH_PRODUCTID 0x4061 - -/* Timeout in jiffies */ -#define CTRL_TIMEOUT 2000 -#define DATA_TIMEOUT 2000 - -#define OFFSET_7 0 /* size 1 */ -#define OFFSET_b 1 /* size 8 */ -#define OFFSET_d 9 /* size 4 */ -#define OFFSET_e 13 /* size 1 */ -#define OFFSET_f 14 /* size 1 */ -#define TOTAL 15 - -#define SIZE_7 1 -#define SIZE_b 8 -#define SIZE_d 4 -#define SIZE_e 1 -#define SIZE_f 1 - -static int dl_512_first = 0; -static int sw_buffering = 0; - -module_param(dl_512_first, bool, 0444); -MODULE_PARM_DESC(dl_512_first, "Read 512 bytes before sending firmware"); +#define CTRL_TIMEOUT 2000 /* milliseconds */ +#define DATA_TIMEOUT 2000 /* milliseconds */ + +#define OFFSET_7 0 /* size 1 */ +#define OFFSET_b 1 /* size 8 */ +#define OFFSET_d 9 /* size 4 */ +#define OFFSET_e 13 /* size 1 */ +#define OFFSET_f 14 /* size 1 */ + +#define SIZE_7 1 +#define SIZE_b 8 +#define SIZE_d 4 +#define SIZE_e 1 +#define SIZE_f 1 + +#define MIN_POLL_DELAY 5000 /* milliseconds */ +#define MAX_POLL_DELAY 60000 /* milliseconds */ + +#define RESUBMIT_DELAY 1000 /* milliseconds */ + +#define DEFAULT_BULK_ALTSETTING 1 +#define DEFAULT_ISOC_ALTSETTING 3 +#define DEFAULT_DL_512_FIRST 0 +#define DEFAULT_ENABLE_ISOC 0 +#define DEFAULT_SW_BUFFERING 0 + +static unsigned int altsetting = 0; /* zero means: use the default */ +static bool dl_512_first = DEFAULT_DL_512_FIRST; +static bool enable_isoc = DEFAULT_ENABLE_ISOC; +static bool sw_buffering = DEFAULT_SW_BUFFERING; + +#define DEFAULT_B_MAX_DSL 8128 +#define DEFAULT_MODEM_MODE 11 +#define MODEM_OPTION_LENGTH 16 +static const unsigned char DEFAULT_MODEM_OPTION[MODEM_OPTION_LENGTH] = { + 0x10, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 +}; -module_param(sw_buffering, uint, 0444); -MODULE_PARM_DESC(sw_buffering, "Enable software buffering"); +static unsigned int BMaxDSL = DEFAULT_B_MAX_DSL; +static unsigned char ModemMode = DEFAULT_MODEM_MODE; +static unsigned char ModemOption[MODEM_OPTION_LENGTH]; +static unsigned int num_ModemOption; + +module_param(altsetting, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(altsetting, + "Alternative setting for data interface (bulk_default: " + __MODULE_STRING(DEFAULT_BULK_ALTSETTING) "; isoc_default: " + __MODULE_STRING(DEFAULT_ISOC_ALTSETTING) ")"); + +module_param(dl_512_first, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(dl_512_first, + "Read 512 bytes before sending firmware (default: " + __MODULE_STRING(DEFAULT_DL_512_FIRST) ")"); + +module_param(enable_isoc, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(enable_isoc, + "Use isochronous transfers if available (default: " + __MODULE_STRING(DEFAULT_ENABLE_ISOC) ")"); + +module_param(sw_buffering, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(sw_buffering, + "Enable software buffering (default: " + __MODULE_STRING(DEFAULT_SW_BUFFERING) ")"); + +module_param(BMaxDSL, uint, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(BMaxDSL, + "default: " __MODULE_STRING(DEFAULT_B_MAX_DSL)); + +module_param(ModemMode, byte, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(ModemMode, + "default: " __MODULE_STRING(DEFAULT_MODEM_MODE)); + +module_param_array(ModemOption, byte, &num_ModemOption, S_IRUGO); +MODULE_PARM_DESC(ModemOption, "default: 0x10,0x00,0x00,0x00,0x20"); + +#define INTERFACE_DATA 1 +#define ENDPOINT_INT 0x81 +#define ENDPOINT_BULK_DATA 0x07 +#define ENDPOINT_ISOC_DATA 0x07 +#define ENDPOINT_FIRMWARE 0x05 + +struct speedtch_params { + unsigned int altsetting; + unsigned int BMaxDSL; + unsigned char ModemMode; + unsigned char ModemOption[MODEM_OPTION_LENGTH]; +}; -#define UDSL_IOCTL_LINE_UP 1 -#define UDSL_IOCTL_LINE_DOWN 2 +struct speedtch_instance_data { + struct usbatm_data *usbatm; -#define SPEEDTCH_ENDPOINT_INT 0x81 -#define SPEEDTCH_ENDPOINT_DATA 0x07 -#define SPEEDTCH_ENDPOINT_FIRMWARE 0x05 + struct speedtch_params params; /* set in probe, constant afterwards */ -#define hex2int(c) ( (c >= '0') && (c <= '9') ? (c - '0') : ((c & 0xf) + 9) ) + struct timer_list status_check_timer; + struct work_struct status_check_work; -static struct usb_device_id speedtch_usb_ids[] = { - {USB_DEVICE(SPEEDTOUCH_VENDORID, SPEEDTOUCH_PRODUCTID)}, - {} -}; + unsigned char last_status; -MODULE_DEVICE_TABLE(usb, speedtch_usb_ids); + int poll_delay; /* milliseconds */ -struct speedtch_instance_data { - struct udsl_instance_data u; - - /* Status */ + struct timer_list resubmit_timer; struct urb *int_urb; unsigned char int_data[16]; - struct work_struct poll_work; - struct timer_list poll_timer; -}; -/* USB */ - -static int speedtch_usb_probe(struct usb_interface *intf, - const struct usb_device_id *id); -static void speedtch_usb_disconnect(struct usb_interface *intf); -static int speedtch_usb_ioctl(struct usb_interface *intf, unsigned int code, - void *user_data); -static void speedtch_handle_int(struct urb *urb, struct pt_regs *regs); -static void speedtch_poll_status(struct speedtch_instance_data *instance); -static struct usb_driver speedtch_usb_driver = { - .owner = THIS_MODULE, - .name = speedtch_driver_name, - .probe = speedtch_usb_probe, - .disconnect = speedtch_usb_disconnect, - .ioctl = speedtch_usb_ioctl, - .id_table = speedtch_usb_ids, + unsigned char scratch_buffer[16]; }; /*************** ** firmware ** ***************/ -static void speedtch_got_firmware(struct speedtch_instance_data *instance, - int got_it) +static void speedtch_set_swbuff(struct speedtch_instance_data *instance, int state) { - int err; - struct usb_interface *intf; - - down(&instance->u.serialize); /* vs self, speedtch_firmware_start */ - if (instance->u.status == UDSL_LOADED_FIRMWARE) - goto out; - if (!got_it) { - instance->u.status = UDSL_NO_FIRMWARE; - goto out; - } - if ((err = usb_set_interface(instance->u.usb_dev, 1, 1)) < 0) { - dbg("speedtch_got_firmware: usb_set_interface returned %d!", err); - instance->u.status = UDSL_NO_FIRMWARE; - goto out; - } - - /* Set up interrupt endpoint */ - intf = usb_ifnum_to_if(instance->u.usb_dev, 0); - if (intf && !usb_driver_claim_interface(&speedtch_usb_driver, intf, NULL)) { - - instance->int_urb = usb_alloc_urb(0, GFP_KERNEL); - if (instance->int_urb) { - - usb_fill_int_urb(instance->int_urb, instance->u.usb_dev, - usb_rcvintpipe(instance->u.usb_dev, SPEEDTCH_ENDPOINT_INT), - instance->int_data, - sizeof(instance->int_data), - speedtch_handle_int, instance, 50); - err = usb_submit_urb(instance->int_urb, GFP_KERNEL); - if (err) { - /* Doesn't matter; we'll poll anyway */ - dbg("speedtch_got_firmware: Submission of interrupt URB failed %d", err); - usb_free_urb(instance->int_urb); - instance->int_urb = NULL; - usb_driver_release_interface(&speedtch_usb_driver, intf); - } - } - } - /* Start status polling */ - mod_timer(&instance->poll_timer, jiffies + (1 * HZ)); - - instance->u.status = UDSL_LOADED_FIRMWARE; - tasklet_schedule(&instance->u.receive_tasklet); - out: - up(&instance->u.serialize); - wake_up_interruptible(&instance->u.firmware_waiters); -} - -static int speedtch_set_swbuff(struct speedtch_instance_data *instance, - int state) -{ - struct usb_device *dev = instance->u.usb_dev; + struct usbatm_data *usbatm = instance->usbatm; + struct usb_device *usb_dev = usbatm->usb_dev; int ret; - ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - 0x32, 0x40, state ? 0x01 : 0x00, - 0x00, NULL, 0, 100); - if (ret < 0) { - printk("Warning: %sabling SW buffering: usb_control_msg returned %d\n", - state ? "En" : "Dis", ret); - return ret; - } - - dbg("speedtch_set_swbuff: %sbled SW buffering", state ? "En" : "Dis"); - return 0; + ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), + 0x32, 0x40, state ? 0x01 : 0x00, 0x00, NULL, 0, CTRL_TIMEOUT); + if (ret < 0) + usb_warn(usbatm, + "%sabling SW buffering: usb_control_msg returned %d\n", + state ? "En" : "Dis", ret); + else + usb_dbg(usbatm, "speedtch_set_swbuff: %sbled SW buffering\n", state ? "En" : "Dis"); } static void speedtch_test_sequence(struct speedtch_instance_data *instance) { - struct usb_device *dev = instance->u.usb_dev; - unsigned char buf[10]; + struct usbatm_data *usbatm = instance->usbatm; + struct usb_device *usb_dev = usbatm->usb_dev; + unsigned char *buf = instance->scratch_buffer; int ret; /* URB 147 */ buf[0] = 0x1c; buf[1] = 0x50; - ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - 0x01, 0x40, 0x0b, 0x00, buf, 2, 100); + ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), + 0x01, 0x40, 0x0b, 0x00, buf, 2, CTRL_TIMEOUT); if (ret < 0) - printk(KERN_WARNING "%s failed on URB147: %d\n", __func__, ret); + usb_warn(usbatm, "%s failed on URB147: %d\n", __func__, ret); /* URB 148 */ buf[0] = 0x32; buf[1] = 0x00; - ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - 0x01, 0x40, 0x02, 0x00, buf, 2, 100); + ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), + 0x01, 0x40, 0x02, 0x00, buf, 2, CTRL_TIMEOUT); if (ret < 0) - printk(KERN_WARNING "%s failed on URB148: %d\n", __func__, ret); + usb_warn(usbatm, "%s failed on URB148: %d\n", __func__, ret); /* URB 149 */ buf[0] = 0x01; buf[1] = 0x00; buf[2] = 0x01; - ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - 0x01, 0x40, 0x03, 0x00, buf, 3, 100); + ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), + 0x01, 0x40, 0x03, 0x00, buf, 3, CTRL_TIMEOUT); if (ret < 0) - printk(KERN_WARNING "%s failed on URB149: %d\n", __func__, ret); + usb_warn(usbatm, "%s failed on URB149: %d\n", __func__, ret); /* URB 150 */ buf[0] = 0x01; buf[1] = 0x00; buf[2] = 0x01; - ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), - 0x01, 0x40, 0x04, 0x00, buf, 3, 100); + ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), + 0x01, 0x40, 0x04, 0x00, buf, 3, CTRL_TIMEOUT); if (ret < 0) - printk(KERN_WARNING "%s failed on URB150: %d\n", __func__, ret); -} - -static int speedtch_start_synchro(struct speedtch_instance_data *instance) -{ - struct usb_device *dev = instance->u.usb_dev; - unsigned char buf[2]; - int ret; - - ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - 0x12, 0xc0, 0x04, 0x00, - buf, sizeof(buf), CTRL_TIMEOUT); - if (ret < 0) { - printk(KERN_WARNING "SpeedTouch: Failed to start ADSL synchronisation: %d\n", ret); - return ret; - } - - dbg("speedtch_start_synchro: modem prodded. %d Bytes returned: %02x %02x", ret, buf[0], buf[1]); - return 0; -} - -static void speedtch_handle_int(struct urb *urb, struct pt_regs *regs) -{ - struct speedtch_instance_data *instance = urb->context; - unsigned int count = urb->actual_length; - int ret; - - /* The magic interrupt for "up state" */ - const static unsigned char up_int[6] = { 0xa1, 0x00, 0x01, 0x00, 0x00, 0x00 }; - /* The magic interrupt for "down state" */ - const static unsigned char down_int[6] = { 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00 }; - - switch (urb->status) { - case 0: - /* success */ - break; - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* this urb is terminated; clean up */ - dbg("%s - urb shutting down with status: %d", __func__, urb->status); - return; - default: - dbg("%s - nonzero urb status received: %d", __func__, urb->status); - goto exit; - } - - if (count < 6) { - dbg("%s - int packet too short", __func__); - goto exit; - } - - if (!memcmp(up_int, instance->int_data, 6)) { - del_timer(&instance->poll_timer); - printk(KERN_NOTICE "DSL line goes up\n"); - } else if (!memcmp(down_int, instance->int_data, 6)) { - printk(KERN_NOTICE "DSL line goes down\n"); - } else { - int i; - - printk(KERN_DEBUG "Unknown interrupt packet of %d bytes:", count); - for (i = 0; i < count; i++) - printk(" %02x", instance->int_data[i]); - printk("\n"); - } - schedule_work(&instance->poll_work); - - exit: - rmb(); - if (!instance->int_urb) - return; - - ret = usb_submit_urb(urb, GFP_ATOMIC); - if (ret) - err("%s - usb_submit_urb failed with result %d", __func__, ret); -} - -static int speedtch_get_status(struct speedtch_instance_data *instance, - unsigned char *buf) -{ - struct usb_device *dev = instance->u.usb_dev; - int ret; - - memset(buf, 0, TOTAL); - - ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - 0x12, 0xc0, 0x07, 0x00, buf + OFFSET_7, SIZE_7, - CTRL_TIMEOUT); - if (ret < 0) { - dbg("MSG 7 failed"); - return ret; - } - - ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - 0x12, 0xc0, 0x0b, 0x00, buf + OFFSET_b, SIZE_b, - CTRL_TIMEOUT); - if (ret < 0) { - dbg("MSG B failed"); - return ret; - } - - ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - 0x12, 0xc0, 0x0d, 0x00, buf + OFFSET_d, SIZE_d, - CTRL_TIMEOUT); - if (ret < 0) { - dbg("MSG D failed"); - return ret; - } - - ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - 0x01, 0xc0, 0x0e, 0x00, buf + OFFSET_e, SIZE_e, - CTRL_TIMEOUT); - if (ret < 0) { - dbg("MSG E failed"); - return ret; - } - - ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - 0x01, 0xc0, 0x0f, 0x00, buf + OFFSET_f, SIZE_f, - CTRL_TIMEOUT); - if (ret < 0) { - dbg("MSG F failed"); - return ret; - } - - return 0; -} - -static void speedtch_poll_status(struct speedtch_instance_data *instance) -{ - unsigned char buf[TOTAL]; - int ret; - - ret = speedtch_get_status(instance, buf); - if (ret) { - printk(KERN_WARNING - "SpeedTouch: Error %d fetching device status\n", ret); - return; - } - - dbg("Line state %02x", buf[OFFSET_7]); - - switch (buf[OFFSET_7]) { - case 0: - if (instance->u.atm_dev->signal != ATM_PHY_SIG_LOST) { - instance->u.atm_dev->signal = ATM_PHY_SIG_LOST; - printk(KERN_NOTICE "ADSL line is down\n"); - /* It'll never resync again unless we ask it to... */ - speedtch_start_synchro(instance); - } - break; - - case 0x08: - if (instance->u.atm_dev->signal != ATM_PHY_SIG_UNKNOWN) { - instance->u.atm_dev->signal = ATM_PHY_SIG_UNKNOWN; - printk(KERN_NOTICE "ADSL line is blocked?\n"); - } - break; - - case 0x10: - if (instance->u.atm_dev->signal != ATM_PHY_SIG_LOST) { - instance->u.atm_dev->signal = ATM_PHY_SIG_LOST; - printk(KERN_NOTICE "ADSL line is synchronising\n"); - } - break; - - case 0x20: - if (instance->u.atm_dev->signal != ATM_PHY_SIG_FOUND) { - int down_speed = buf[OFFSET_b] | (buf[OFFSET_b + 1] << 8) - | (buf[OFFSET_b + 2] << 16) | (buf[OFFSET_b + 3] << 24); - int up_speed = buf[OFFSET_b + 4] | (buf[OFFSET_b + 5] << 8) - | (buf[OFFSET_b + 6] << 16) | (buf[OFFSET_b + 7] << 24); - - if (!(down_speed & 0x0000ffff) && - !(up_speed & 0x0000ffff)) { - down_speed >>= 16; - up_speed >>= 16; - } - instance->u.atm_dev->link_rate = down_speed * 1000 / 424; - instance->u.atm_dev->signal = ATM_PHY_SIG_FOUND; + usb_warn(usbatm, "%s failed on URB150: %d\n", __func__, ret); - printk(KERN_NOTICE - "ADSL line is up (%d Kib/s down | %d Kib/s up)\n", - down_speed, up_speed); - } - break; - - default: - if (instance->u.atm_dev->signal != ATM_PHY_SIG_UNKNOWN) { - instance->u.atm_dev->signal = ATM_PHY_SIG_UNKNOWN; - printk(KERN_NOTICE "Unknown line state %02x\n", buf[OFFSET_7]); - } - break; - } -} + /* Extra initialisation in recent drivers - gives higher speeds */ -static void speedtch_timer_poll(unsigned long data) -{ - struct speedtch_instance_data *instance = (void *)data; + /* URBext1 */ + buf[0] = instance->params.ModemMode; + ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), + 0x01, 0x40, 0x11, 0x00, buf, 1, CTRL_TIMEOUT); + if (ret < 0) + usb_warn(usbatm, "%s failed on URBext1: %d\n", __func__, ret); + + /* URBext2 */ + /* This seems to be the one which actually triggers the higher sync + rate -- it does require the new firmware too, although it works OK + with older firmware */ + ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), + 0x01, 0x40, 0x14, 0x00, + instance->params.ModemOption, + MODEM_OPTION_LENGTH, CTRL_TIMEOUT); + if (ret < 0) + usb_warn(usbatm, "%s failed on URBext2: %d\n", __func__, ret); - schedule_work(&instance->poll_work); - mod_timer(&instance->poll_timer, jiffies + (5 * HZ)); + /* URBext3 */ + buf[0] = instance->params.BMaxDSL & 0xff; + buf[1] = instance->params.BMaxDSL >> 8; + ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), + 0x01, 0x40, 0x12, 0x00, buf, 2, CTRL_TIMEOUT); + if (ret < 0) + usb_warn(usbatm, "%s failed on URBext3: %d\n", __func__, ret); } -#ifdef USE_FW_LOADER -static void speedtch_upload_firmware(struct speedtch_instance_data *instance, +static int speedtch_upload_firmware(struct speedtch_instance_data *instance, const struct firmware *fw1, const struct firmware *fw2) { unsigned char *buffer; - struct usb_device *usb_dev = instance->u.usb_dev; - struct usb_interface *intf; - int actual_length, ret; + struct usbatm_data *usbatm = instance->usbatm; + struct usb_device *usb_dev = usbatm->usb_dev; + int actual_length; + int ret = 0; int offset; - dbg("speedtch_upload_firmware"); - - if (!(intf = usb_ifnum_to_if(usb_dev, 2))) { - dbg("speedtch_upload_firmware: interface not found!"); - goto fail; - } + usb_dbg(usbatm, "%s entered\n", __func__); if (!(buffer = (unsigned char *)__get_free_page(GFP_KERNEL))) { - dbg("speedtch_upload_firmware: no memory for buffer!"); - goto fail; + ret = -ENOMEM; + usb_dbg(usbatm, "%s: no memory for buffer!\n", __func__); + goto out; } - /* A user-space firmware loader may already have claimed interface #2 */ - if ((ret = - usb_driver_claim_interface(&speedtch_usb_driver, intf, NULL)) < 0) { - dbg("speedtch_upload_firmware: interface in use (%d)!", ret); - goto fail_free; + if (!usb_ifnum_to_if(usb_dev, 2)) { + ret = -ENODEV; + usb_dbg(usbatm, "%s: interface not found!\n", __func__); + goto out_free; } /* URB 7 */ if (dl_512_first) { /* some modems need a read before writing the firmware */ - ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE), + ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), buffer, 0x200, &actual_length, 2000); if (ret < 0 && ret != -ETIMEDOUT) - dbg("speedtch_upload_firmware: read BLOCK0 from modem failed (%d)!", ret); + usb_warn(usbatm, "%s: read BLOCK0 from modem failed (%d)!\n", __func__, ret); else - dbg("speedtch_upload_firmware: BLOCK0 downloaded (%d bytes)", ret); + usb_dbg(usbatm, "%s: BLOCK0 downloaded (%d bytes)\n", __func__, ret); } /* URB 8 : both leds are static green */ @@ -489,60 +283,65 @@ static void speedtch_upload_firmware(struct speedtch_instance_data *instance, int thislen = min_t(int, PAGE_SIZE, fw1->size - offset); memcpy(buffer, fw1->data + offset, thislen); - ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE), + ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, ENDPOINT_FIRMWARE), buffer, thislen, &actual_length, DATA_TIMEOUT); if (ret < 0) { - dbg("speedtch_upload_firmware: write BLOCK1 to modem failed (%d)!", ret); - goto fail_release; + usb_err(usbatm, "%s: write BLOCK1 to modem failed (%d)!\n", __func__, ret); + goto out_free; } - dbg("speedtch_upload_firmware: BLOCK1 uploaded (%zu bytes)", fw1->size); + usb_dbg(usbatm, "%s: BLOCK1 uploaded (%zu bytes)\n", __func__, fw1->size); } /* USB led blinking green, ADSL led off */ /* URB 11 */ - ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE), + ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), buffer, 0x200, &actual_length, DATA_TIMEOUT); if (ret < 0) { - dbg("speedtch_upload_firmware: read BLOCK2 from modem failed (%d)!", ret); - goto fail_release; + usb_err(usbatm, "%s: read BLOCK2 from modem failed (%d)!\n", __func__, ret); + goto out_free; } - dbg("speedtch_upload_firmware: BLOCK2 downloaded (%d bytes)", actual_length); + usb_dbg(usbatm, "%s: BLOCK2 downloaded (%d bytes)\n", __func__, actual_length); /* URBs 12 to 139 - USB led blinking green, ADSL led off */ for (offset = 0; offset < fw2->size; offset += PAGE_SIZE) { int thislen = min_t(int, PAGE_SIZE, fw2->size - offset); memcpy(buffer, fw2->data + offset, thislen); - ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE), + ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, ENDPOINT_FIRMWARE), buffer, thislen, &actual_length, DATA_TIMEOUT); if (ret < 0) { - dbg("speedtch_upload_firmware: write BLOCK3 to modem failed (%d)!", ret); - goto fail_release; + usb_err(usbatm, "%s: write BLOCK3 to modem failed (%d)!\n", __func__, ret); + goto out_free; } } - dbg("speedtch_upload_firmware: BLOCK3 uploaded (%zu bytes)", fw2->size); + usb_dbg(usbatm, "%s: BLOCK3 uploaded (%zu bytes)\n", __func__, fw2->size); /* USB led static green, ADSL led static red */ /* URB 142 */ - ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE), + ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), buffer, 0x200, &actual_length, DATA_TIMEOUT); if (ret < 0) { - dbg("speedtch_upload_firmware: read BLOCK4 from modem failed (%d)!", ret); - goto fail_release; + usb_err(usbatm, "%s: read BLOCK4 from modem failed (%d)!\n", __func__, ret); + goto out_free; } /* success */ - dbg("speedtch_upload_firmware: BLOCK4 downloaded (%d bytes)", actual_length); + usb_dbg(usbatm, "%s: BLOCK4 downloaded (%d bytes)\n", __func__, actual_length); /* Delay to allow firmware to start up. We can do this here because we're in our own kernel thread anyway. */ - msleep(1000); + msleep_interruptible(1000); + + if ((ret = usb_set_interface(usb_dev, INTERFACE_DATA, instance->params.altsetting)) < 0) { + usb_err(usbatm, "%s: setting interface to %d failed (%d)!\n", __func__, instance->params.altsetting, ret); + goto out_free; + } /* Enable software buffering, if requested */ if (sw_buffering) @@ -551,297 +350,609 @@ static void speedtch_upload_firmware(struct speedtch_instance_data *instance, /* Magic spell; don't ask us what this does */ speedtch_test_sequence(instance); - /* Start modem synchronisation */ - if (speedtch_start_synchro(instance)) - dbg("speedtch_start_synchro: failed"); - - speedtch_got_firmware(instance, 1); + ret = 0; +out_free: free_page((unsigned long)buffer); - return; - - fail_release: - /* Only release interface #2 if uploading failed; we don't release it - we succeeded. This prevents the userspace tools from trying to load - the firmware themselves */ - usb_driver_release_interface(&speedtch_usb_driver, intf); - fail_free: - free_page((unsigned long)buffer); - fail: - speedtch_got_firmware(instance, 0); +out: + return ret; } -static int speedtch_find_firmware(struct speedtch_instance_data - *instance, int phase, - const struct firmware **fw_p) +static int speedtch_find_firmware(struct usbatm_data *usbatm, struct usb_interface *intf, + int phase, const struct firmware **fw_p) { - char buf[24]; - const u16 bcdDevice = le16_to_cpu(instance->u.usb_dev->descriptor.bcdDevice); + struct device *dev = &intf->dev; + const u16 bcdDevice = le16_to_cpu(interface_to_usbdev(intf)->descriptor.bcdDevice); const u8 major_revision = bcdDevice >> 8; const u8 minor_revision = bcdDevice & 0xff; + char buf[24]; sprintf(buf, "speedtch-%d.bin.%x.%02x", phase, major_revision, minor_revision); - dbg("speedtch_find_firmware: looking for %s", buf); + usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf); - if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) { + if (request_firmware(fw_p, buf, dev)) { sprintf(buf, "speedtch-%d.bin.%x", phase, major_revision); - dbg("speedtch_find_firmware: looking for %s", buf); + usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf); - if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) { + if (request_firmware(fw_p, buf, dev)) { sprintf(buf, "speedtch-%d.bin", phase); - dbg("speedtch_find_firmware: looking for %s", buf); + usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf); - if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) { - dev_warn(&instance->u.usb_dev->dev, "no stage %d firmware found!", phase); + if (request_firmware(fw_p, buf, dev)) { + usb_err(usbatm, "%s: no stage %d firmware found!\n", __func__, phase); return -ENOENT; } } } - dev_info(&instance->u.usb_dev->dev, "found stage %d firmware %s\n", phase, buf); + usb_info(usbatm, "found stage %d firmware %s\n", phase, buf); return 0; } -static int speedtch_load_firmware(void *arg) +static int speedtch_heavy_init(struct usbatm_data *usbatm, struct usb_interface *intf) { const struct firmware *fw1, *fw2; - struct speedtch_instance_data *instance = arg; - - BUG_ON(!instance); + struct speedtch_instance_data *instance = usbatm->driver_data; + int ret; - daemonize("firmware/speedtch"); + if ((ret = speedtch_find_firmware(usbatm, intf, 1, &fw1)) < 0) + return ret; - if (!speedtch_find_firmware(instance, 1, &fw1)) { - if (!speedtch_find_firmware(instance, 2, &fw2)) { - speedtch_upload_firmware(instance, fw1, fw2); - release_firmware(fw2); - } + if ((ret = speedtch_find_firmware(usbatm, intf, 2, &fw2)) < 0) { release_firmware(fw1); + return ret; } - /* In case we failed, set state back to NO_FIRMWARE so that - another later attempt may work. Otherwise, we never actually - manage to recover if, for example, the firmware is on /usr and - we look for it too early. */ - speedtch_got_firmware(instance, 0); + if ((ret = speedtch_upload_firmware(instance, fw1, fw2)) < 0) + usb_err(usbatm, "%s: firmware upload failed (%d)!\n", __func__, ret); - module_put(THIS_MODULE); - udsl_put_instance(&instance->u); - return 0; + release_firmware(fw2); + release_firmware(fw1); + + return ret; } -#endif /* USE_FW_LOADER */ -static void speedtch_firmware_start(struct speedtch_instance_data *instance) + +/********** +** ATM ** +**********/ + +static int speedtch_read_status(struct speedtch_instance_data *instance) { -#ifdef USE_FW_LOADER + struct usbatm_data *usbatm = instance->usbatm; + struct usb_device *usb_dev = usbatm->usb_dev; + unsigned char *buf = instance->scratch_buffer; int ret; -#endif - dbg("speedtch_firmware_start"); + memset(buf, 0, 16); - down(&instance->u.serialize); /* vs self, speedtch_got_firmware */ + ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), + 0x12, 0xc0, 0x07, 0x00, buf + OFFSET_7, SIZE_7, + CTRL_TIMEOUT); + if (ret < 0) { + atm_dbg(usbatm, "%s: MSG 7 failed\n", __func__); + return ret; + } - if (instance->u.status >= UDSL_LOADING_FIRMWARE) { - up(&instance->u.serialize); - return; + ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), + 0x12, 0xc0, 0x0b, 0x00, buf + OFFSET_b, SIZE_b, + CTRL_TIMEOUT); + if (ret < 0) { + atm_dbg(usbatm, "%s: MSG B failed\n", __func__); + return ret; } - instance->u.status = UDSL_LOADING_FIRMWARE; - up(&instance->u.serialize); + ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), + 0x12, 0xc0, 0x0d, 0x00, buf + OFFSET_d, SIZE_d, + CTRL_TIMEOUT); + if (ret < 0) { + atm_dbg(usbatm, "%s: MSG D failed\n", __func__); + return ret; + } -#ifdef USE_FW_LOADER - udsl_get_instance(&instance->u); - try_module_get(THIS_MODULE); + ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), + 0x01, 0xc0, 0x0e, 0x00, buf + OFFSET_e, SIZE_e, + CTRL_TIMEOUT); + if (ret < 0) { + atm_dbg(usbatm, "%s: MSG E failed\n", __func__); + return ret; + } - ret = kernel_thread(speedtch_load_firmware, instance, - CLONE_FS | CLONE_FILES); + ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), + 0x01, 0xc0, 0x0f, 0x00, buf + OFFSET_f, SIZE_f, + CTRL_TIMEOUT); + if (ret < 0) { + atm_dbg(usbatm, "%s: MSG F failed\n", __func__); + return ret; + } - if (ret >= 0) - return; /* OK */ + return 0; +} - dbg("speedtch_firmware_start: kernel_thread failed (%d)!", ret); +static int speedtch_start_synchro(struct speedtch_instance_data *instance) +{ + struct usbatm_data *usbatm = instance->usbatm; + struct usb_device *usb_dev = usbatm->usb_dev; + unsigned char *buf = instance->scratch_buffer; + int ret; - module_put(THIS_MODULE); - udsl_put_instance(&instance->u); - /* Just pretend it never happened... hope modem_run happens */ -#endif /* USE_FW_LOADER */ + atm_dbg(usbatm, "%s entered\n", __func__); - speedtch_got_firmware(instance, 0); + memset(buf, 0, 2); + + ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), + 0x12, 0xc0, 0x04, 0x00, + buf, 2, CTRL_TIMEOUT); + + if (ret < 0) + atm_warn(usbatm, "failed to start ADSL synchronisation: %d\n", ret); + else + atm_dbg(usbatm, "%s: modem prodded. %d bytes returned: %02x %02x\n", + __func__, ret, buf[0], buf[1]); + + return ret; } -static int speedtch_firmware_wait(struct udsl_instance_data *instance) +static void speedtch_check_status(struct work_struct *work) { - speedtch_firmware_start((void *)instance); + struct speedtch_instance_data *instance = + container_of(work, struct speedtch_instance_data, + status_check_work); + struct usbatm_data *usbatm = instance->usbatm; + struct atm_dev *atm_dev = usbatm->atm_dev; + unsigned char *buf = instance->scratch_buffer; + int down_speed, up_speed, ret; + unsigned char status; + +#ifdef VERBOSE_DEBUG + atm_dbg(usbatm, "%s entered\n", __func__); +#endif - if (wait_event_interruptible(instance->firmware_waiters, instance->status != UDSL_LOADING_FIRMWARE) < 0) - return -ERESTARTSYS; + ret = speedtch_read_status(instance); + if (ret < 0) { + atm_warn(usbatm, "error %d fetching device status\n", ret); + instance->poll_delay = min(2 * instance->poll_delay, MAX_POLL_DELAY); + return; + } - return (instance->status == UDSL_LOADED_FIRMWARE) ? 0 : -EAGAIN; -} + instance->poll_delay = max(instance->poll_delay / 2, MIN_POLL_DELAY); -/********** -** USB ** -**********/ + status = buf[OFFSET_7]; -static int speedtch_usb_ioctl(struct usb_interface *intf, unsigned int code, - void *user_data) -{ - struct speedtch_instance_data *instance = usb_get_intfdata(intf); + if ((status != instance->last_status) || !status) { + atm_dbg(usbatm, "%s: line state 0x%02x\n", __func__, status); - dbg("speedtch_usb_ioctl entered"); + switch (status) { + case 0: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); + if (instance->last_status) + atm_info(usbatm, "ADSL line is down\n"); + /* It may never resync again unless we ask it to... */ + ret = speedtch_start_synchro(instance); + break; - if (!instance) { - dbg("speedtch_usb_ioctl: NULL instance!"); - return -ENODEV; - } + case 0x08: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN); + atm_info(usbatm, "ADSL line is blocked?\n"); + break; + + case 0x10: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST); + atm_info(usbatm, "ADSL line is synchronising\n"); + break; + + case 0x20: + down_speed = buf[OFFSET_b] | (buf[OFFSET_b + 1] << 8) + | (buf[OFFSET_b + 2] << 16) | (buf[OFFSET_b + 3] << 24); + up_speed = buf[OFFSET_b + 4] | (buf[OFFSET_b + 5] << 8) + | (buf[OFFSET_b + 6] << 16) | (buf[OFFSET_b + 7] << 24); + + if (!(down_speed & 0x0000ffff) && !(up_speed & 0x0000ffff)) { + down_speed >>= 16; + up_speed >>= 16; + } + + atm_dev->link_rate = down_speed * 1000 / 424; + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND); + + atm_info(usbatm, + "ADSL line is up (%d kb/s down | %d kb/s up)\n", + down_speed, up_speed); + break; + + default: + atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN); + atm_info(usbatm, "unknown line state %02x\n", status); + break; + } - switch (code) { - case UDSL_IOCTL_LINE_UP: - instance->u.atm_dev->signal = ATM_PHY_SIG_FOUND; - speedtch_got_firmware(instance, 1); - return (instance->u.status == UDSL_LOADED_FIRMWARE) ? 0 : -EIO; - case UDSL_IOCTL_LINE_DOWN: - instance->u.atm_dev->signal = ATM_PHY_SIG_LOST; - return 0; - default: - return -ENOTTY; + instance->last_status = status; } } -static int speedtch_usb_probe(struct usb_interface *intf, - const struct usb_device_id *id) +static void speedtch_status_poll(unsigned long data) { - struct usb_device *dev = interface_to_usbdev(intf); - int ifnum = intf->altsetting->desc.bInterfaceNumber; - struct speedtch_instance_data *instance; - unsigned char mac_str[13]; - int ret, i; - char buf7[SIZE_7]; + struct speedtch_instance_data *instance = (void *)data; - dbg("speedtch_usb_probe: trying device with vendor=0x%x, product=0x%x, ifnum %d", - le16_to_cpu(dev->descriptor.idVendor), - le16_to_cpu(dev->descriptor.idProduct), ifnum); + schedule_work(&instance->status_check_work); - if ((dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) || - (ifnum != 1)) - return -ENODEV; + /* The following check is racy, but the race is harmless */ + if (instance->poll_delay < MAX_POLL_DELAY) + mod_timer(&instance->status_check_timer, jiffies + msecs_to_jiffies(instance->poll_delay)); + else + atm_warn(instance->usbatm, "Too many failures - disabling line status polling\n"); +} - dbg("speedtch_usb_probe: device accepted"); +static void speedtch_resubmit_int(unsigned long data) +{ + struct speedtch_instance_data *instance = (void *)data; + struct urb *int_urb = instance->int_urb; + int ret; - /* instance init */ - instance = kmalloc(sizeof(*instance), GFP_KERNEL); - if (!instance) { - dbg("speedtch_usb_probe: no memory for instance data!"); - return -ENOMEM; + atm_dbg(instance->usbatm, "%s entered\n", __func__); + + if (int_urb) { + ret = usb_submit_urb(int_urb, GFP_ATOMIC); + if (!ret) + schedule_work(&instance->status_check_work); + else { + atm_dbg(instance->usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret); + mod_timer(&instance->resubmit_timer, jiffies + msecs_to_jiffies(RESUBMIT_DELAY)); + } } +} - memset(instance, 0, sizeof(struct speedtch_instance_data)); +static void speedtch_handle_int(struct urb *int_urb) +{ + struct speedtch_instance_data *instance = int_urb->context; + struct usbatm_data *usbatm = instance->usbatm; + unsigned int count = int_urb->actual_length; + int status = int_urb->status; + int ret; - if ((ret = usb_set_interface(dev, 0, 0)) < 0) - goto fail; + /* The magic interrupt for "up state" */ + static const unsigned char up_int[6] = { 0xa1, 0x00, 0x01, 0x00, 0x00, 0x00 }; + /* The magic interrupt for "down state" */ + static const unsigned char down_int[6] = { 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00 }; - if ((ret = usb_set_interface(dev, 2, 0)) < 0) + atm_dbg(usbatm, "%s entered\n", __func__); + + if (status < 0) { + atm_dbg(usbatm, "%s: nonzero urb status %d!\n", __func__, status); goto fail; + } - instance->u.data_endpoint = SPEEDTCH_ENDPOINT_DATA; - instance->u.firmware_wait = speedtch_firmware_wait; - instance->u.driver_name = speedtch_driver_name; + if ((count == 6) && !memcmp(up_int, instance->int_data, 6)) { + del_timer(&instance->status_check_timer); + atm_info(usbatm, "DSL line goes up\n"); + } else if ((count == 6) && !memcmp(down_int, instance->int_data, 6)) { + atm_info(usbatm, "DSL line goes down\n"); + } else { + int i; - ret = udsl_instance_setup(dev, &instance->u); - if (ret) + atm_dbg(usbatm, "%s: unknown interrupt packet of length %d:", __func__, count); + for (i = 0; i < count; i++) + printk(" %02x", instance->int_data[i]); + printk("\n"); goto fail; + } - init_timer(&instance->poll_timer); - instance->poll_timer.function = speedtch_timer_poll; - instance->poll_timer.data = (unsigned long)instance; + if ((int_urb = instance->int_urb)) { + ret = usb_submit_urb(int_urb, GFP_ATOMIC); + schedule_work(&instance->status_check_work); + if (ret < 0) { + atm_dbg(usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret); + goto fail; + } + } - INIT_WORK(&instance->poll_work, (void *)speedtch_poll_status, instance); + return; - /* set MAC address, it is stored in the serial number */ - memset(instance->u.atm_dev->esi, 0, sizeof(instance->u.atm_dev->esi)); - if (usb_string(dev, dev->descriptor.iSerialNumber, mac_str, sizeof(mac_str)) == 12) { +fail: + if ((int_urb = instance->int_urb)) + mod_timer(&instance->resubmit_timer, jiffies + msecs_to_jiffies(RESUBMIT_DELAY)); +} + +static int speedtch_atm_start(struct usbatm_data *usbatm, struct atm_dev *atm_dev) +{ + struct usb_device *usb_dev = usbatm->usb_dev; + struct speedtch_instance_data *instance = usbatm->driver_data; + int i, ret; + unsigned char mac_str[13]; + + atm_dbg(usbatm, "%s entered\n", __func__); + + /* Set MAC address, it is stored in the serial number */ + memset(atm_dev->esi, 0, sizeof(atm_dev->esi)); + if (usb_string(usb_dev, usb_dev->descriptor.iSerialNumber, mac_str, sizeof(mac_str)) == 12) { for (i = 0; i < 6; i++) - instance->u.atm_dev->esi[i] = - (hex2int(mac_str[i * 2]) * 16) + (hex2int(mac_str[i * 2 + 1])); + atm_dev->esi[i] = (hex_to_bin(mac_str[i * 2]) << 4) + + hex_to_bin(mac_str[i * 2 + 1]); } - /* First check whether the modem already seems to be alive */ - ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), - 0x12, 0xc0, 0x07, 0x00, buf7, SIZE_7, 500); + /* Start modem synchronisation */ + ret = speedtch_start_synchro(instance); - if (ret == SIZE_7) { - dbg("firmware appears to be already loaded"); - speedtch_got_firmware(instance, 1); - speedtch_poll_status(instance); - } else { - speedtch_firmware_start(instance); + /* Set up interrupt endpoint */ + if (instance->int_urb) { + ret = usb_submit_urb(instance->int_urb, GFP_KERNEL); + if (ret < 0) { + /* Doesn't matter; we'll poll anyway */ + atm_dbg(usbatm, "%s: submission of interrupt URB failed (%d)!\n", __func__, ret); + usb_free_urb(instance->int_urb); + instance->int_urb = NULL; + } } - usb_set_intfdata(intf, instance); + /* Start status polling */ + mod_timer(&instance->status_check_timer, jiffies + msecs_to_jiffies(1000)); return 0; +} - fail: - kfree(instance); +static void speedtch_atm_stop(struct usbatm_data *usbatm, struct atm_dev *atm_dev) +{ + struct speedtch_instance_data *instance = usbatm->driver_data; + struct urb *int_urb = instance->int_urb; + + atm_dbg(usbatm, "%s entered\n", __func__); + + del_timer_sync(&instance->status_check_timer); + + /* + * Since resubmit_timer and int_urb can schedule themselves and + * each other, shutting them down correctly takes some care + */ + instance->int_urb = NULL; /* signal shutdown */ + mb(); + usb_kill_urb(int_urb); + del_timer_sync(&instance->resubmit_timer); + /* + * At this point, speedtch_handle_int and speedtch_resubmit_int + * can run or be running, but instance->int_urb == NULL means that + * they will not reschedule + */ + usb_kill_urb(int_urb); + del_timer_sync(&instance->resubmit_timer); + usb_free_urb(int_urb); + + flush_work(&instance->status_check_work); +} - return -ENOMEM; +static int speedtch_pre_reset(struct usb_interface *intf) +{ + return 0; } -static void speedtch_usb_disconnect(struct usb_interface *intf) +static int speedtch_post_reset(struct usb_interface *intf) { - struct speedtch_instance_data *instance = usb_get_intfdata(intf); + return 0; +} + + +/********** +** USB ** +**********/ + +static struct usb_device_id speedtch_usb_ids[] = { + {USB_DEVICE(0x06b9, 0x4061)}, + {} +}; + +MODULE_DEVICE_TABLE(usb, speedtch_usb_ids); - dbg("speedtch_usb_disconnect entered"); +static int speedtch_usb_probe(struct usb_interface *, const struct usb_device_id *); + +static struct usb_driver speedtch_usb_driver = { + .name = speedtch_driver_name, + .probe = speedtch_usb_probe, + .disconnect = usbatm_usb_disconnect, + .pre_reset = speedtch_pre_reset, + .post_reset = speedtch_post_reset, + .id_table = speedtch_usb_ids +}; + +static void speedtch_release_interfaces(struct usb_device *usb_dev, + int num_interfaces) +{ + struct usb_interface *cur_intf; + int i; + + for (i = 0; i < num_interfaces; i++) + if ((cur_intf = usb_ifnum_to_if(usb_dev, i))) { + usb_set_intfdata(cur_intf, NULL); + usb_driver_release_interface(&speedtch_usb_driver, cur_intf); + } +} + +static int speedtch_bind(struct usbatm_data *usbatm, + struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_device *usb_dev = interface_to_usbdev(intf); + struct usb_interface *cur_intf, *data_intf; + struct speedtch_instance_data *instance; + int ifnum = intf->altsetting->desc.bInterfaceNumber; + int num_interfaces = usb_dev->actconfig->desc.bNumInterfaces; + int i, ret; + int use_isoc; + + usb_dbg(usbatm, "%s entered\n", __func__); + + /* sanity checks */ + + if (usb_dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) { + usb_err(usbatm, "%s: wrong device class %d\n", __func__, usb_dev->descriptor.bDeviceClass); + return -ENODEV; + } + + if (!(data_intf = usb_ifnum_to_if(usb_dev, INTERFACE_DATA))) { + usb_err(usbatm, "%s: data interface not found!\n", __func__); + return -ENODEV; + } + + /* claim all interfaces */ + + for (i = 0; i < num_interfaces; i++) { + cur_intf = usb_ifnum_to_if(usb_dev, i); + + if ((i != ifnum) && cur_intf) { + ret = usb_driver_claim_interface(&speedtch_usb_driver, cur_intf, usbatm); + + if (ret < 0) { + usb_err(usbatm, "%s: failed to claim interface %2d (%d)!\n", __func__, i, ret); + speedtch_release_interfaces(usb_dev, i); + return ret; + } + } + } + + instance = kzalloc(sizeof(*instance), GFP_KERNEL); if (!instance) { - dbg("speedtch_usb_disconnect: NULL instance!"); - return; + usb_err(usbatm, "%s: no memory for instance data!\n", __func__); + ret = -ENOMEM; + goto fail_release; } -/*QQ need to handle disconnects on interface #2 while uploading firmware */ -/*QQ and what about interface #1? */ + instance->usbatm = usbatm; - if (instance->int_urb) { - struct urb *int_urb = instance->int_urb; - instance->int_urb = NULL; - wmb(); - usb_unlink_urb(int_urb); - usb_free_urb(int_urb); + /* module parameters may change at any moment, so take a snapshot */ + instance->params.altsetting = altsetting; + instance->params.BMaxDSL = BMaxDSL; + instance->params.ModemMode = ModemMode; + memcpy(instance->params.ModemOption, DEFAULT_MODEM_OPTION, MODEM_OPTION_LENGTH); + memcpy(instance->params.ModemOption, ModemOption, num_ModemOption); + use_isoc = enable_isoc; + + if (instance->params.altsetting) + if ((ret = usb_set_interface(usb_dev, INTERFACE_DATA, instance->params.altsetting)) < 0) { + usb_err(usbatm, "%s: setting interface to %2d failed (%d)!\n", __func__, instance->params.altsetting, ret); + instance->params.altsetting = 0; /* fall back to default */ + } + + if (!instance->params.altsetting && use_isoc) + if ((ret = usb_set_interface(usb_dev, INTERFACE_DATA, DEFAULT_ISOC_ALTSETTING)) < 0) { + usb_dbg(usbatm, "%s: setting interface to %2d failed (%d)!\n", __func__, DEFAULT_ISOC_ALTSETTING, ret); + use_isoc = 0; /* fall back to bulk */ + } + + if (use_isoc) { + const struct usb_host_interface *desc = data_intf->cur_altsetting; + const __u8 target_address = USB_DIR_IN | usbatm->driver->isoc_in; + + use_isoc = 0; /* fall back to bulk if endpoint not found */ + + for (i = 0; i < desc->desc.bNumEndpoints; i++) { + const struct usb_endpoint_descriptor *endpoint_desc = &desc->endpoint[i].desc; + + if ((endpoint_desc->bEndpointAddress == target_address)) { + use_isoc = + usb_endpoint_xfer_isoc(endpoint_desc); + break; + } + } + + if (!use_isoc) + usb_info(usbatm, "isochronous transfer not supported - using bulk\n"); } - instance->int_data[0] = 1; - del_timer_sync(&instance->poll_timer); - wmb(); - flush_scheduled_work(); + if (!use_isoc && !instance->params.altsetting) + if ((ret = usb_set_interface(usb_dev, INTERFACE_DATA, DEFAULT_BULK_ALTSETTING)) < 0) { + usb_err(usbatm, "%s: setting interface to %2d failed (%d)!\n", __func__, DEFAULT_BULK_ALTSETTING, ret); + goto fail_free; + } + + if (!instance->params.altsetting) + instance->params.altsetting = use_isoc ? DEFAULT_ISOC_ALTSETTING : DEFAULT_BULK_ALTSETTING; + + usbatm->flags |= (use_isoc ? UDSL_USE_ISOC : 0); + + INIT_WORK(&instance->status_check_work, speedtch_check_status); + init_timer(&instance->status_check_timer); + + instance->status_check_timer.function = speedtch_status_poll; + instance->status_check_timer.data = (unsigned long)instance; + instance->last_status = 0xff; + instance->poll_delay = MIN_POLL_DELAY; - udsl_instance_disconnect(&instance->u); + init_timer(&instance->resubmit_timer); + instance->resubmit_timer.function = speedtch_resubmit_int; + instance->resubmit_timer.data = (unsigned long)instance; - /* clean up */ - usb_set_intfdata(intf, NULL); - udsl_put_instance(&instance->u); + instance->int_urb = usb_alloc_urb(0, GFP_KERNEL); + + if (instance->int_urb) + usb_fill_int_urb(instance->int_urb, usb_dev, + usb_rcvintpipe(usb_dev, ENDPOINT_INT), + instance->int_data, sizeof(instance->int_data), + speedtch_handle_int, instance, 16); + else + usb_dbg(usbatm, "%s: no memory for interrupt urb!\n", __func__); + + /* check whether the modem already seems to be alive */ + ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), + 0x12, 0xc0, 0x07, 0x00, + instance->scratch_buffer + OFFSET_7, SIZE_7, 500); + + usbatm->flags |= (ret == SIZE_7 ? UDSL_SKIP_HEAVY_INIT : 0); + + usb_dbg(usbatm, "%s: firmware %s loaded\n", __func__, usbatm->flags & UDSL_SKIP_HEAVY_INIT ? "already" : "not"); + + if (!(usbatm->flags & UDSL_SKIP_HEAVY_INIT)) + if ((ret = usb_reset_device(usb_dev)) < 0) { + usb_err(usbatm, "%s: device reset failed (%d)!\n", __func__, ret); + goto fail_free; + } + + usbatm->driver_data = instance; + + return 0; + +fail_free: + usb_free_urb(instance->int_urb); + kfree(instance); +fail_release: + speedtch_release_interfaces(usb_dev, num_interfaces); + return ret; } +static void speedtch_unbind(struct usbatm_data *usbatm, struct usb_interface *intf) +{ + struct usb_device *usb_dev = interface_to_usbdev(intf); + struct speedtch_instance_data *instance = usbatm->driver_data; + + usb_dbg(usbatm, "%s entered\n", __func__); + + speedtch_release_interfaces(usb_dev, usb_dev->actconfig->desc.bNumInterfaces); + usb_free_urb(instance->int_urb); + kfree(instance); +} + + /*********** ** init ** ***********/ -static int __init speedtch_usb_init(void) -{ - dbg("speedtch_usb_init: driver version " DRIVER_VERSION); - - return usb_register(&speedtch_usb_driver); -} +static struct usbatm_driver speedtch_usbatm_driver = { + .driver_name = speedtch_driver_name, + .bind = speedtch_bind, + .heavy_init = speedtch_heavy_init, + .unbind = speedtch_unbind, + .atm_start = speedtch_atm_start, + .atm_stop = speedtch_atm_stop, + .bulk_in = ENDPOINT_BULK_DATA, + .bulk_out = ENDPOINT_BULK_DATA, + .isoc_in = ENDPOINT_ISOC_DATA +}; -static void __exit speedtch_usb_cleanup(void) +static int speedtch_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) { - dbg("speedtch_usb_cleanup entered"); - - usb_deregister(&speedtch_usb_driver); + return usbatm_usb_probe(intf, id, &speedtch_usbatm_driver); } -module_init(speedtch_usb_init); -module_exit(speedtch_usb_cleanup); +module_usb_driver(speedtch_usb_driver); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c new file mode 100644 index 00000000000..5a459377574 --- /dev/null +++ b/drivers/usb/atm/ueagle-atm.c @@ -0,0 +1,2807 @@ +/*- + * Copyright (c) 2003, 2004 + * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. + * + * Copyright (c) 2005-2007 Matthieu Castet <castet.matthieu@free.fr> + * Copyright (c) 2005-2007 Stanislaw Gruszka <stf_xl@wp.pl> + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * BSD license below: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * GPL license : + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * + * HISTORY : some part of the code was base on ueagle 1.3 BSD driver, + * Damien Bergamini agree to put his code under a DUAL GPL/BSD license. + * + * The rest of the code was was rewritten from scratch. + */ + +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/crc32.h> +#include <linux/usb.h> +#include <linux/firmware.h> +#include <linux/ctype.h> +#include <linux/sched.h> +#include <linux/kthread.h> +#include <linux/mutex.h> +#include <linux/freezer.h> +#include <linux/slab.h> +#include <linux/kernel.h> + +#include <asm/unaligned.h> + +#include "usbatm.h" + +#define EAGLEUSBVERSION "ueagle 1.4" + + +/* + * Debug macros + */ +#define uea_dbg(usb_dev, format, args...) \ + do { \ + if (debug >= 1) \ + dev_dbg(&(usb_dev)->dev, \ + "[ueagle-atm dbg] %s: " format, \ + __func__, ##args); \ + } while (0) + +#define uea_vdbg(usb_dev, format, args...) \ + do { \ + if (debug >= 2) \ + dev_dbg(&(usb_dev)->dev, \ + "[ueagle-atm vdbg] " format, ##args); \ + } while (0) + +#define uea_enters(usb_dev) \ + uea_vdbg(usb_dev, "entering %s\n" , __func__) + +#define uea_leaves(usb_dev) \ + uea_vdbg(usb_dev, "leaving %s\n" , __func__) + +#define uea_err(usb_dev, format, args...) \ + dev_err(&(usb_dev)->dev , "[UEAGLE-ATM] " format , ##args) + +#define uea_warn(usb_dev, format, args...) \ + dev_warn(&(usb_dev)->dev , "[Ueagle-atm] " format, ##args) + +#define uea_info(usb_dev, format, args...) \ + dev_info(&(usb_dev)->dev , "[ueagle-atm] " format, ##args) + +struct intr_pkt; + +/* cmv's from firmware */ +struct uea_cmvs_v1 { + u32 address; + u16 offset; + u32 data; +} __packed; + +struct uea_cmvs_v2 { + u32 group; + u32 address; + u32 offset; + u32 data; +} __packed; + +/* information about currently processed cmv */ +struct cmv_dsc_e1 { + u8 function; + u16 idx; + u32 address; + u16 offset; +}; + +struct cmv_dsc_e4 { + u16 function; + u16 offset; + u16 address; + u16 group; +}; + +union cmv_dsc { + struct cmv_dsc_e1 e1; + struct cmv_dsc_e4 e4; +}; + +struct uea_softc { + struct usb_device *usb_dev; + struct usbatm_data *usbatm; + + int modem_index; + unsigned int driver_info; + int annex; +#define ANNEXA 0 +#define ANNEXB 1 + + int booting; + int reset; + + wait_queue_head_t sync_q; + + struct task_struct *kthread; + u32 data; + u32 data1; + + int cmv_ack; + union cmv_dsc cmv_dsc; + + struct work_struct task; + u16 pageno; + u16 ovl; + + const struct firmware *dsp_firm; + struct urb *urb_int; + + void (*dispatch_cmv) (struct uea_softc *, struct intr_pkt *); + void (*schedule_load_page) (struct uea_softc *, struct intr_pkt *); + int (*stat) (struct uea_softc *); + int (*send_cmvs) (struct uea_softc *); + + /* keep in sync with eaglectl */ + struct uea_stats { + struct { + u32 state; + u32 flags; + u32 mflags; + u32 vidcpe; + u32 vidco; + u32 dsrate; + u32 usrate; + u32 dsunc; + u32 usunc; + u32 dscorr; + u32 uscorr; + u32 txflow; + u32 rxflow; + u32 usattenuation; + u32 dsattenuation; + u32 dsmargin; + u32 usmargin; + u32 firmid; + } phy; + } stats; +}; + +/* + * Elsa IDs + */ +#define ELSA_VID 0x05CC +#define ELSA_PID_PSTFIRM 0x3350 +#define ELSA_PID_PREFIRM 0x3351 + +#define ELSA_PID_A_PREFIRM 0x3352 +#define ELSA_PID_A_PSTFIRM 0x3353 +#define ELSA_PID_B_PREFIRM 0x3362 +#define ELSA_PID_B_PSTFIRM 0x3363 + +/* + * Devolo IDs : pots if (pid & 0x10) + */ +#define DEVOLO_VID 0x1039 +#define DEVOLO_EAGLE_I_A_PID_PSTFIRM 0x2110 +#define DEVOLO_EAGLE_I_A_PID_PREFIRM 0x2111 + +#define DEVOLO_EAGLE_I_B_PID_PSTFIRM 0x2100 +#define DEVOLO_EAGLE_I_B_PID_PREFIRM 0x2101 + +#define DEVOLO_EAGLE_II_A_PID_PSTFIRM 0x2130 +#define DEVOLO_EAGLE_II_A_PID_PREFIRM 0x2131 + +#define DEVOLO_EAGLE_II_B_PID_PSTFIRM 0x2120 +#define DEVOLO_EAGLE_II_B_PID_PREFIRM 0x2121 + +/* + * Reference design USB IDs + */ +#define ANALOG_VID 0x1110 +#define ADI930_PID_PREFIRM 0x9001 +#define ADI930_PID_PSTFIRM 0x9000 + +#define EAGLE_I_PID_PREFIRM 0x9010 /* Eagle I */ +#define EAGLE_I_PID_PSTFIRM 0x900F /* Eagle I */ + +#define EAGLE_IIC_PID_PREFIRM 0x9024 /* Eagle IIC */ +#define EAGLE_IIC_PID_PSTFIRM 0x9023 /* Eagle IIC */ + +#define EAGLE_II_PID_PREFIRM 0x9022 /* Eagle II */ +#define EAGLE_II_PID_PSTFIRM 0x9021 /* Eagle II */ + +#define EAGLE_III_PID_PREFIRM 0x9032 /* Eagle III */ +#define EAGLE_III_PID_PSTFIRM 0x9031 /* Eagle III */ + +#define EAGLE_IV_PID_PREFIRM 0x9042 /* Eagle IV */ +#define EAGLE_IV_PID_PSTFIRM 0x9041 /* Eagle IV */ + +/* + * USR USB IDs + */ +#define USR_VID 0x0BAF +#define MILLER_A_PID_PREFIRM 0x00F2 +#define MILLER_A_PID_PSTFIRM 0x00F1 +#define MILLER_B_PID_PREFIRM 0x00FA +#define MILLER_B_PID_PSTFIRM 0x00F9 +#define HEINEKEN_A_PID_PREFIRM 0x00F6 +#define HEINEKEN_A_PID_PSTFIRM 0x00F5 +#define HEINEKEN_B_PID_PREFIRM 0x00F8 +#define HEINEKEN_B_PID_PSTFIRM 0x00F7 + +#define PREFIRM 0 +#define PSTFIRM (1<<7) +#define AUTO_ANNEX_A (1<<8) +#define AUTO_ANNEX_B (1<<9) + +enum { + ADI930 = 0, + EAGLE_I, + EAGLE_II, + EAGLE_III, + EAGLE_IV +}; + +/* macros for both struct usb_device_id and struct uea_softc */ +#define UEA_IS_PREFIRM(x) \ + (!((x)->driver_info & PSTFIRM)) +#define UEA_CHIP_VERSION(x) \ + ((x)->driver_info & 0xf) + +#define IS_ISDN(x) \ + ((x)->annex & ANNEXB) + +#define INS_TO_USBDEV(ins) (ins->usb_dev) + +#define GET_STATUS(data) \ + ((data >> 8) & 0xf) + +#define IS_OPERATIONAL(sc) \ + ((UEA_CHIP_VERSION(sc) != EAGLE_IV) ? \ + (GET_STATUS(sc->stats.phy.state) == 2) : \ + (sc->stats.phy.state == 7)) + +/* + * Set of macros to handle unaligned data in the firmware blob. + * The FW_GET_BYTE() macro is provided only for consistency. + */ + +#define FW_GET_BYTE(p) (*((__u8 *) (p))) + +#define FW_DIR "ueagle-atm/" +#define EAGLE_FIRMWARE FW_DIR "eagle.fw" +#define ADI930_FIRMWARE FW_DIR "adi930.fw" +#define EAGLE_I_FIRMWARE FW_DIR "eagleI.fw" +#define EAGLE_II_FIRMWARE FW_DIR "eagleII.fw" +#define EAGLE_III_FIRMWARE FW_DIR "eagleIII.fw" +#define EAGLE_IV_FIRMWARE FW_DIR "eagleIV.fw" + +#define DSP4I_FIRMWARE FW_DIR "DSP4i.bin" +#define DSP4P_FIRMWARE FW_DIR "DSP4p.bin" +#define DSP9I_FIRMWARE FW_DIR "DSP9i.bin" +#define DSP9P_FIRMWARE FW_DIR "DSP9p.bin" +#define DSPEI_FIRMWARE FW_DIR "DSPei.bin" +#define DSPEP_FIRMWARE FW_DIR "DSPep.bin" +#define FPGA930_FIRMWARE FW_DIR "930-fpga.bin" + +#define CMV4P_FIRMWARE FW_DIR "CMV4p.bin" +#define CMV4PV2_FIRMWARE FW_DIR "CMV4p.bin.v2" +#define CMV4I_FIRMWARE FW_DIR "CMV4i.bin" +#define CMV4IV2_FIRMWARE FW_DIR "CMV4i.bin.v2" +#define CMV9P_FIRMWARE FW_DIR "CMV9p.bin" +#define CMV9PV2_FIRMWARE FW_DIR "CMV9p.bin.v2" +#define CMV9I_FIRMWARE FW_DIR "CMV9i.bin" +#define CMV9IV2_FIRMWARE FW_DIR "CMV9i.bin.v2" +#define CMVEP_FIRMWARE FW_DIR "CMVep.bin" +#define CMVEPV2_FIRMWARE FW_DIR "CMVep.bin.v2" +#define CMVEI_FIRMWARE FW_DIR "CMVei.bin" +#define CMVEIV2_FIRMWARE FW_DIR "CMVei.bin.v2" + +#define UEA_FW_NAME_MAX 30 +#define NB_MODEM 4 + +#define BULK_TIMEOUT 300 +#define CTRL_TIMEOUT 1000 + +#define ACK_TIMEOUT msecs_to_jiffies(3000) + +#define UEA_INTR_IFACE_NO 0 +#define UEA_US_IFACE_NO 1 +#define UEA_DS_IFACE_NO 2 + +#define FASTEST_ISO_INTF 8 + +#define UEA_BULK_DATA_PIPE 0x02 +#define UEA_IDMA_PIPE 0x04 +#define UEA_INTR_PIPE 0x04 +#define UEA_ISO_DATA_PIPE 0x08 + +#define UEA_E1_SET_BLOCK 0x0001 +#define UEA_E4_SET_BLOCK 0x002c +#define UEA_SET_MODE 0x0003 +#define UEA_SET_2183_DATA 0x0004 +#define UEA_SET_TIMEOUT 0x0011 + +#define UEA_LOOPBACK_OFF 0x0002 +#define UEA_LOOPBACK_ON 0x0003 +#define UEA_BOOT_IDMA 0x0006 +#define UEA_START_RESET 0x0007 +#define UEA_END_RESET 0x0008 + +#define UEA_SWAP_MAILBOX (0x3fcd | 0x4000) +#define UEA_MPTX_START (0x3fce | 0x4000) +#define UEA_MPTX_MAILBOX (0x3fd6 | 0x4000) +#define UEA_MPRX_MAILBOX (0x3fdf | 0x4000) + +/* block information in eagle4 dsp firmware */ +struct block_index { + __le32 PageOffset; + __le32 NotLastBlock; + __le32 dummy; + __le32 PageSize; + __le32 PageAddress; + __le16 dummy1; + __le16 PageNumber; +} __packed; + +#define E4_IS_BOOT_PAGE(PageSize) ((le32_to_cpu(PageSize)) & 0x80000000) +#define E4_PAGE_BYTES(PageSize) ((le32_to_cpu(PageSize) & 0x7fffffff) * 4) + +#define E4_L1_STRING_HEADER 0x10 +#define E4_MAX_PAGE_NUMBER 0x58 +#define E4_NO_SWAPPAGE_HEADERS 0x31 + +/* l1_code is eagle4 dsp firmware format */ +struct l1_code { + u8 string_header[E4_L1_STRING_HEADER]; + u8 page_number_to_block_index[E4_MAX_PAGE_NUMBER]; + struct block_index page_header[E4_NO_SWAPPAGE_HEADERS]; + u8 code[0]; +} __packed; + +/* structures describing a block within a DSP page */ +struct block_info_e1 { + __le16 wHdr; + __le16 wAddress; + __le16 wSize; + __le16 wOvlOffset; + __le16 wOvl; /* overlay */ + __le16 wLast; +} __packed; +#define E1_BLOCK_INFO_SIZE 12 + +struct block_info_e4 { + __be16 wHdr; + __u8 bBootPage; + __u8 bPageNumber; + __be32 dwSize; + __be32 dwAddress; + __be16 wReserved; +} __packed; +#define E4_BLOCK_INFO_SIZE 14 + +#define UEA_BIHDR 0xabcd +#define UEA_RESERVED 0xffff + +/* constants describing cmv type */ +#define E1_PREAMBLE 0x535c +#define E1_MODEMTOHOST 0x01 +#define E1_HOSTTOMODEM 0x10 + +#define E1_MEMACCESS 0x1 +#define E1_ADSLDIRECTIVE 0x7 +#define E1_FUNCTION_TYPE(f) ((f) >> 4) +#define E1_FUNCTION_SUBTYPE(f) ((f) & 0x0f) + +#define E4_MEMACCESS 0 +#define E4_ADSLDIRECTIVE 0xf +#define E4_FUNCTION_TYPE(f) ((f) >> 8) +#define E4_FUNCTION_SIZE(f) ((f) & 0x0f) +#define E4_FUNCTION_SUBTYPE(f) (((f) >> 4) & 0x0f) + +/* for MEMACCESS */ +#define E1_REQUESTREAD 0x0 +#define E1_REQUESTWRITE 0x1 +#define E1_REPLYREAD 0x2 +#define E1_REPLYWRITE 0x3 + +#define E4_REQUESTREAD 0x0 +#define E4_REQUESTWRITE 0x4 +#define E4_REPLYREAD (E4_REQUESTREAD | 1) +#define E4_REPLYWRITE (E4_REQUESTWRITE | 1) + +/* for ADSLDIRECTIVE */ +#define E1_KERNELREADY 0x0 +#define E1_MODEMREADY 0x1 + +#define E4_KERNELREADY 0x0 +#define E4_MODEMREADY 0x1 + +#define E1_MAKEFUNCTION(t, s) (((t) & 0xf) << 4 | ((s) & 0xf)) +#define E4_MAKEFUNCTION(t, st, s) (((t) & 0xf) << 8 | \ + ((st) & 0xf) << 4 | ((s) & 0xf)) + +#define E1_MAKESA(a, b, c, d) \ + (((c) & 0xff) << 24 | \ + ((d) & 0xff) << 16 | \ + ((a) & 0xff) << 8 | \ + ((b) & 0xff)) + +#define E1_GETSA1(a) ((a >> 8) & 0xff) +#define E1_GETSA2(a) (a & 0xff) +#define E1_GETSA3(a) ((a >> 24) & 0xff) +#define E1_GETSA4(a) ((a >> 16) & 0xff) + +#define E1_SA_CNTL E1_MAKESA('C', 'N', 'T', 'L') +#define E1_SA_DIAG E1_MAKESA('D', 'I', 'A', 'G') +#define E1_SA_INFO E1_MAKESA('I', 'N', 'F', 'O') +#define E1_SA_OPTN E1_MAKESA('O', 'P', 'T', 'N') +#define E1_SA_RATE E1_MAKESA('R', 'A', 'T', 'E') +#define E1_SA_STAT E1_MAKESA('S', 'T', 'A', 'T') + +#define E4_SA_CNTL 1 +#define E4_SA_STAT 2 +#define E4_SA_INFO 3 +#define E4_SA_TEST 4 +#define E4_SA_OPTN 5 +#define E4_SA_RATE 6 +#define E4_SA_DIAG 7 +#define E4_SA_CNFG 8 + +/* structures representing a CMV (Configuration and Management Variable) */ +struct cmv_e1 { + __le16 wPreamble; + __u8 bDirection; + __u8 bFunction; + __le16 wIndex; + __le32 dwSymbolicAddress; + __le16 wOffsetAddress; + __le32 dwData; +} __packed; + +struct cmv_e4 { + __be16 wGroup; + __be16 wFunction; + __be16 wOffset; + __be16 wAddress; + __be32 dwData[6]; +} __packed; + +/* structures representing swap information */ +struct swap_info_e1 { + __u8 bSwapPageNo; + __u8 bOvl; /* overlay */ +} __packed; + +struct swap_info_e4 { + __u8 bSwapPageNo; +} __packed; + +/* structures representing interrupt data */ +#define e1_bSwapPageNo u.e1.s1.swapinfo.bSwapPageNo +#define e1_bOvl u.e1.s1.swapinfo.bOvl +#define e4_bSwapPageNo u.e4.s1.swapinfo.bSwapPageNo + +#define INT_LOADSWAPPAGE 0x0001 +#define INT_INCOMINGCMV 0x0002 + +union intr_data_e1 { + struct { + struct swap_info_e1 swapinfo; + __le16 wDataSize; + } __packed s1; + struct { + struct cmv_e1 cmv; + __le16 wDataSize; + } __packed s2; +} __packed; + +union intr_data_e4 { + struct { + struct swap_info_e4 swapinfo; + __le16 wDataSize; + } __packed s1; + struct { + struct cmv_e4 cmv; + __le16 wDataSize; + } __packed s2; +} __packed; + +struct intr_pkt { + __u8 bType; + __u8 bNotification; + __le16 wValue; + __le16 wIndex; + __le16 wLength; + __le16 wInterrupt; + union { + union intr_data_e1 e1; + union intr_data_e4 e4; + } u; +} __packed; + +#define E1_INTR_PKT_SIZE 28 +#define E4_INTR_PKT_SIZE 64 + +static struct usb_driver uea_driver; +static DEFINE_MUTEX(uea_mutex); +static const char * const chip_name[] = { + "ADI930", "Eagle I", "Eagle II", "Eagle III", "Eagle IV"}; + +static int modem_index; +static unsigned int debug; +static unsigned int altsetting[NB_MODEM] = { + [0 ... (NB_MODEM - 1)] = FASTEST_ISO_INTF}; +static bool sync_wait[NB_MODEM]; +static char *cmv_file[NB_MODEM]; +static int annex[NB_MODEM]; + +module_param(debug, uint, 0644); +MODULE_PARM_DESC(debug, "module debug level (0=off,1=on,2=verbose)"); +module_param_array(altsetting, uint, NULL, 0644); +MODULE_PARM_DESC(altsetting, "alternate setting for incoming traffic: 0=bulk, " + "1=isoc slowest, ... , 8=isoc fastest (default)"); +module_param_array(sync_wait, bool, NULL, 0644); +MODULE_PARM_DESC(sync_wait, "wait the synchronisation before starting ATM"); +module_param_array(cmv_file, charp, NULL, 0644); +MODULE_PARM_DESC(cmv_file, + "file name with configuration and management variables"); +module_param_array(annex, uint, NULL, 0644); +MODULE_PARM_DESC(annex, + "manually set annex a/b (0=auto, 1=annex a, 2=annex b)"); + +#define uea_wait(sc, cond, timeo) \ +({ \ + int _r = wait_event_interruptible_timeout(sc->sync_q, \ + (cond) || kthread_should_stop(), timeo); \ + if (kthread_should_stop()) \ + _r = -ENODEV; \ + _r; \ +}) + +#define UPDATE_ATM_STAT(type, val) \ + do { \ + if (sc->usbatm->atm_dev) \ + sc->usbatm->atm_dev->type = val; \ + } while (0) + +#define UPDATE_ATM_SIGNAL(val) \ + do { \ + if (sc->usbatm->atm_dev) \ + atm_dev_signal_change(sc->usbatm->atm_dev, val); \ + } while (0) + + +/* Firmware loading */ +#define LOAD_INTERNAL 0xA0 +#define F8051_USBCS 0x7f92 + +/** + * uea_send_modem_cmd - Send a command for pre-firmware devices. + */ +static int uea_send_modem_cmd(struct usb_device *usb, + u16 addr, u16 size, const u8 *buff) +{ + int ret = -ENOMEM; + u8 *xfer_buff; + + xfer_buff = kmemdup(buff, size, GFP_KERNEL); + if (xfer_buff) { + ret = usb_control_msg(usb, + usb_sndctrlpipe(usb, 0), + LOAD_INTERNAL, + USB_DIR_OUT | USB_TYPE_VENDOR | + USB_RECIP_DEVICE, addr, 0, xfer_buff, + size, CTRL_TIMEOUT); + kfree(xfer_buff); + } + + if (ret < 0) + return ret; + + return (ret == size) ? 0 : -EIO; +} + +static void uea_upload_pre_firmware(const struct firmware *fw_entry, + void *context) +{ + struct usb_device *usb = context; + const u8 *pfw; + u8 value; + u32 crc = 0; + int ret, size; + + uea_enters(usb); + if (!fw_entry) { + uea_err(usb, "firmware is not available\n"); + goto err; + } + + pfw = fw_entry->data; + size = fw_entry->size; + if (size < 4) + goto err_fw_corrupted; + + crc = get_unaligned_le32(pfw); + pfw += 4; + size -= 4; + if (crc32_be(0, pfw, size) != crc) + goto err_fw_corrupted; + + /* + * Start to upload firmware : send reset + */ + value = 1; + ret = uea_send_modem_cmd(usb, F8051_USBCS, sizeof(value), &value); + + if (ret < 0) { + uea_err(usb, "modem reset failed with error %d\n", ret); + goto err; + } + + while (size > 3) { + u8 len = FW_GET_BYTE(pfw); + u16 add = get_unaligned_le16(pfw + 1); + + size -= len + 3; + if (size < 0) + goto err_fw_corrupted; + + ret = uea_send_modem_cmd(usb, add, len, pfw + 3); + if (ret < 0) { + uea_err(usb, "uploading firmware data failed " + "with error %d\n", ret); + goto err; + } + pfw += len + 3; + } + + if (size != 0) + goto err_fw_corrupted; + + /* + * Tell the modem we finish : de-assert reset + */ + value = 0; + ret = uea_send_modem_cmd(usb, F8051_USBCS, 1, &value); + if (ret < 0) + uea_err(usb, "modem de-assert failed with error %d\n", ret); + else + uea_info(usb, "firmware uploaded\n"); + + goto err; + +err_fw_corrupted: + uea_err(usb, "firmware is corrupted\n"); +err: + release_firmware(fw_entry); + uea_leaves(usb); +} + +/** + * uea_load_firmware - Load usb firmware for pre-firmware devices. + */ +static int uea_load_firmware(struct usb_device *usb, unsigned int ver) +{ + int ret; + char *fw_name = EAGLE_FIRMWARE; + + uea_enters(usb); + uea_info(usb, "pre-firmware device, uploading firmware\n"); + + switch (ver) { + case ADI930: + fw_name = ADI930_FIRMWARE; + break; + case EAGLE_I: + fw_name = EAGLE_I_FIRMWARE; + break; + case EAGLE_II: + fw_name = EAGLE_II_FIRMWARE; + break; + case EAGLE_III: + fw_name = EAGLE_III_FIRMWARE; + break; + case EAGLE_IV: + fw_name = EAGLE_IV_FIRMWARE; + break; + } + + ret = request_firmware_nowait(THIS_MODULE, 1, fw_name, &usb->dev, + GFP_KERNEL, usb, + uea_upload_pre_firmware); + if (ret) + uea_err(usb, "firmware %s is not available\n", fw_name); + else + uea_info(usb, "loading firmware %s\n", fw_name); + + uea_leaves(usb); + return ret; +} + +/* modem management : dsp firmware, send/read CMV, monitoring statistic + */ + +/* + * Make sure that the DSP code provided is safe to use. + */ +static int check_dsp_e1(const u8 *dsp, unsigned int len) +{ + u8 pagecount, blockcount; + u16 blocksize; + u32 pageoffset; + unsigned int i, j, p, pp; + + pagecount = FW_GET_BYTE(dsp); + p = 1; + + /* enough space for page offsets? */ + if (p + 4 * pagecount > len) + return 1; + + for (i = 0; i < pagecount; i++) { + + pageoffset = get_unaligned_le32(dsp + p); + p += 4; + + if (pageoffset == 0) + continue; + + /* enough space for blockcount? */ + if (pageoffset >= len) + return 1; + + pp = pageoffset; + blockcount = FW_GET_BYTE(dsp + pp); + pp += 1; + + for (j = 0; j < blockcount; j++) { + + /* enough space for block header? */ + if (pp + 4 > len) + return 1; + + pp += 2; /* skip blockaddr */ + blocksize = get_unaligned_le16(dsp + pp); + pp += 2; + + /* enough space for block data? */ + if (pp + blocksize > len) + return 1; + + pp += blocksize; + } + } + + return 0; +} + +static int check_dsp_e4(const u8 *dsp, int len) +{ + int i; + struct l1_code *p = (struct l1_code *) dsp; + unsigned int sum = p->code - dsp; + + if (len < sum) + return 1; + + if (strcmp("STRATIPHY ANEXA", p->string_header) != 0 && + strcmp("STRATIPHY ANEXB", p->string_header) != 0) + return 1; + + for (i = 0; i < E4_MAX_PAGE_NUMBER; i++) { + struct block_index *blockidx; + u8 blockno = p->page_number_to_block_index[i]; + if (blockno >= E4_NO_SWAPPAGE_HEADERS) + continue; + + do { + u64 l; + + if (blockno >= E4_NO_SWAPPAGE_HEADERS) + return 1; + + blockidx = &p->page_header[blockno++]; + if ((u8 *)(blockidx + 1) - dsp >= len) + return 1; + + if (le16_to_cpu(blockidx->PageNumber) != i) + return 1; + + l = E4_PAGE_BYTES(blockidx->PageSize); + sum += l; + l += le32_to_cpu(blockidx->PageOffset); + if (l > len) + return 1; + + /* zero is zero regardless endianes */ + } while (blockidx->NotLastBlock); + } + + return (sum == len) ? 0 : 1; +} + +/* + * send data to the idma pipe + * */ +static int uea_idma_write(struct uea_softc *sc, const void *data, u32 size) +{ + int ret = -ENOMEM; + u8 *xfer_buff; + int bytes_read; + + xfer_buff = kmemdup(data, size, GFP_KERNEL); + if (!xfer_buff) { + uea_err(INS_TO_USBDEV(sc), "can't allocate xfer_buff\n"); + return ret; + } + + ret = usb_bulk_msg(sc->usb_dev, + usb_sndbulkpipe(sc->usb_dev, UEA_IDMA_PIPE), + xfer_buff, size, &bytes_read, BULK_TIMEOUT); + + kfree(xfer_buff); + if (ret < 0) + return ret; + if (size != bytes_read) { + uea_err(INS_TO_USBDEV(sc), "size != bytes_read %d %d\n", size, + bytes_read); + return -EIO; + } + + return 0; +} + +static int request_dsp(struct uea_softc *sc) +{ + int ret; + char *dsp_name; + + if (UEA_CHIP_VERSION(sc) == EAGLE_IV) { + if (IS_ISDN(sc)) + dsp_name = DSP4I_FIRMWARE; + else + dsp_name = DSP4P_FIRMWARE; + } else if (UEA_CHIP_VERSION(sc) == ADI930) { + if (IS_ISDN(sc)) + dsp_name = DSP9I_FIRMWARE; + else + dsp_name = DSP9P_FIRMWARE; + } else { + if (IS_ISDN(sc)) + dsp_name = DSPEI_FIRMWARE; + else + dsp_name = DSPEP_FIRMWARE; + } + + ret = request_firmware(&sc->dsp_firm, dsp_name, &sc->usb_dev->dev); + if (ret < 0) { + uea_err(INS_TO_USBDEV(sc), + "requesting firmware %s failed with error %d\n", + dsp_name, ret); + return ret; + } + + if (UEA_CHIP_VERSION(sc) == EAGLE_IV) + ret = check_dsp_e4(sc->dsp_firm->data, sc->dsp_firm->size); + else + ret = check_dsp_e1(sc->dsp_firm->data, sc->dsp_firm->size); + + if (ret) { + uea_err(INS_TO_USBDEV(sc), "firmware %s is corrupted\n", + dsp_name); + release_firmware(sc->dsp_firm); + sc->dsp_firm = NULL; + return -EILSEQ; + } + + return 0; +} + +/* + * The uea_load_page() function must be called within a process context + */ +static void uea_load_page_e1(struct work_struct *work) +{ + struct uea_softc *sc = container_of(work, struct uea_softc, task); + u16 pageno = sc->pageno; + u16 ovl = sc->ovl; + struct block_info_e1 bi; + + const u8 *p; + u8 pagecount, blockcount; + u16 blockaddr, blocksize; + u32 pageoffset; + int i; + + /* reload firmware when reboot start and it's loaded already */ + if (ovl == 0 && pageno == 0 && sc->dsp_firm) { + release_firmware(sc->dsp_firm); + sc->dsp_firm = NULL; + } + + if (sc->dsp_firm == NULL && request_dsp(sc) < 0) + return; + + p = sc->dsp_firm->data; + pagecount = FW_GET_BYTE(p); + p += 1; + + if (pageno >= pagecount) + goto bad1; + + p += 4 * pageno; + pageoffset = get_unaligned_le32(p); + + if (pageoffset == 0) + goto bad1; + + p = sc->dsp_firm->data + pageoffset; + blockcount = FW_GET_BYTE(p); + p += 1; + + uea_dbg(INS_TO_USBDEV(sc), + "sending %u blocks for DSP page %u\n", blockcount, pageno); + + bi.wHdr = cpu_to_le16(UEA_BIHDR); + bi.wOvl = cpu_to_le16(ovl); + bi.wOvlOffset = cpu_to_le16(ovl | 0x8000); + + for (i = 0; i < blockcount; i++) { + blockaddr = get_unaligned_le16(p); + p += 2; + + blocksize = get_unaligned_le16(p); + p += 2; + + bi.wSize = cpu_to_le16(blocksize); + bi.wAddress = cpu_to_le16(blockaddr); + bi.wLast = cpu_to_le16((i == blockcount - 1) ? 1 : 0); + + /* send block info through the IDMA pipe */ + if (uea_idma_write(sc, &bi, E1_BLOCK_INFO_SIZE)) + goto bad2; + + /* send block data through the IDMA pipe */ + if (uea_idma_write(sc, p, blocksize)) + goto bad2; + + p += blocksize; + } + + return; + +bad2: + uea_err(INS_TO_USBDEV(sc), "sending DSP block %u failed\n", i); + return; +bad1: + uea_err(INS_TO_USBDEV(sc), "invalid DSP page %u requested\n", pageno); +} + +static void __uea_load_page_e4(struct uea_softc *sc, u8 pageno, int boot) +{ + struct block_info_e4 bi; + struct block_index *blockidx; + struct l1_code *p = (struct l1_code *) sc->dsp_firm->data; + u8 blockno = p->page_number_to_block_index[pageno]; + + bi.wHdr = cpu_to_be16(UEA_BIHDR); + bi.bBootPage = boot; + bi.bPageNumber = pageno; + bi.wReserved = cpu_to_be16(UEA_RESERVED); + + do { + const u8 *blockoffset; + unsigned int blocksize; + + blockidx = &p->page_header[blockno]; + blocksize = E4_PAGE_BYTES(blockidx->PageSize); + blockoffset = sc->dsp_firm->data + le32_to_cpu( + blockidx->PageOffset); + + bi.dwSize = cpu_to_be32(blocksize); + bi.dwAddress = cpu_to_be32(le32_to_cpu(blockidx->PageAddress)); + + uea_dbg(INS_TO_USBDEV(sc), + "sending block %u for DSP page " + "%u size %u address %x\n", + blockno, pageno, blocksize, + le32_to_cpu(blockidx->PageAddress)); + + /* send block info through the IDMA pipe */ + if (uea_idma_write(sc, &bi, E4_BLOCK_INFO_SIZE)) + goto bad; + + /* send block data through the IDMA pipe */ + if (uea_idma_write(sc, blockoffset, blocksize)) + goto bad; + + blockno++; + } while (blockidx->NotLastBlock); + + return; + +bad: + uea_err(INS_TO_USBDEV(sc), "sending DSP block %u failed\n", blockno); + return; +} + +static void uea_load_page_e4(struct work_struct *work) +{ + struct uea_softc *sc = container_of(work, struct uea_softc, task); + u8 pageno = sc->pageno; + int i; + struct block_info_e4 bi; + struct l1_code *p; + + uea_dbg(INS_TO_USBDEV(sc), "sending DSP page %u\n", pageno); + + /* reload firmware when reboot start and it's loaded already */ + if (pageno == 0 && sc->dsp_firm) { + release_firmware(sc->dsp_firm); + sc->dsp_firm = NULL; + } + + if (sc->dsp_firm == NULL && request_dsp(sc) < 0) + return; + + p = (struct l1_code *) sc->dsp_firm->data; + if (pageno >= le16_to_cpu(p->page_header[0].PageNumber)) { + uea_err(INS_TO_USBDEV(sc), "invalid DSP " + "page %u requested\n", pageno); + return; + } + + if (pageno != 0) { + __uea_load_page_e4(sc, pageno, 0); + return; + } + + uea_dbg(INS_TO_USBDEV(sc), + "sending Main DSP page %u\n", p->page_header[0].PageNumber); + + for (i = 0; i < le16_to_cpu(p->page_header[0].PageNumber); i++) { + if (E4_IS_BOOT_PAGE(p->page_header[i].PageSize)) + __uea_load_page_e4(sc, i, 1); + } + + uea_dbg(INS_TO_USBDEV(sc) , "sending start bi\n"); + + bi.wHdr = cpu_to_be16(UEA_BIHDR); + bi.bBootPage = 0; + bi.bPageNumber = 0xff; + bi.wReserved = cpu_to_be16(UEA_RESERVED); + bi.dwSize = cpu_to_be32(E4_PAGE_BYTES(p->page_header[0].PageSize)); + bi.dwAddress = cpu_to_be32(le32_to_cpu(p->page_header[0].PageAddress)); + + /* send block info through the IDMA pipe */ + if (uea_idma_write(sc, &bi, E4_BLOCK_INFO_SIZE)) + uea_err(INS_TO_USBDEV(sc), "sending DSP start bi failed\n"); +} + +static inline void wake_up_cmv_ack(struct uea_softc *sc) +{ + BUG_ON(sc->cmv_ack); + sc->cmv_ack = 1; + wake_up(&sc->sync_q); +} + +static inline int wait_cmv_ack(struct uea_softc *sc) +{ + int ret = uea_wait(sc, sc->cmv_ack , ACK_TIMEOUT); + + sc->cmv_ack = 0; + + uea_dbg(INS_TO_USBDEV(sc), "wait_event_timeout : %d ms\n", + jiffies_to_msecs(ret)); + + if (ret < 0) + return ret; + + return (ret == 0) ? -ETIMEDOUT : 0; +} + +#define UCDC_SEND_ENCAPSULATED_COMMAND 0x00 + +static int uea_request(struct uea_softc *sc, + u16 value, u16 index, u16 size, const void *data) +{ + u8 *xfer_buff; + int ret = -ENOMEM; + + xfer_buff = kmemdup(data, size, GFP_KERNEL); + if (!xfer_buff) { + uea_err(INS_TO_USBDEV(sc), "can't allocate xfer_buff\n"); + return ret; + } + + ret = usb_control_msg(sc->usb_dev, usb_sndctrlpipe(sc->usb_dev, 0), + UCDC_SEND_ENCAPSULATED_COMMAND, + USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, + value, index, xfer_buff, size, CTRL_TIMEOUT); + + kfree(xfer_buff); + if (ret < 0) { + uea_err(INS_TO_USBDEV(sc), "usb_control_msg error %d\n", ret); + return ret; + } + + if (ret != size) { + uea_err(INS_TO_USBDEV(sc), + "usb_control_msg send only %d bytes (instead of %d)\n", + ret, size); + return -EIO; + } + + return 0; +} + +static int uea_cmv_e1(struct uea_softc *sc, + u8 function, u32 address, u16 offset, u32 data) +{ + struct cmv_e1 cmv; + int ret; + + uea_enters(INS_TO_USBDEV(sc)); + uea_vdbg(INS_TO_USBDEV(sc), "Function : %d-%d, Address : %c%c%c%c, " + "offset : 0x%04x, data : 0x%08x\n", + E1_FUNCTION_TYPE(function), + E1_FUNCTION_SUBTYPE(function), + E1_GETSA1(address), E1_GETSA2(address), + E1_GETSA3(address), + E1_GETSA4(address), offset, data); + + /* we send a request, but we expect a reply */ + sc->cmv_dsc.e1.function = function | 0x2; + sc->cmv_dsc.e1.idx++; + sc->cmv_dsc.e1.address = address; + sc->cmv_dsc.e1.offset = offset; + + cmv.wPreamble = cpu_to_le16(E1_PREAMBLE); + cmv.bDirection = E1_HOSTTOMODEM; + cmv.bFunction = function; + cmv.wIndex = cpu_to_le16(sc->cmv_dsc.e1.idx); + put_unaligned_le32(address, &cmv.dwSymbolicAddress); + cmv.wOffsetAddress = cpu_to_le16(offset); + put_unaligned_le32(data >> 16 | data << 16, &cmv.dwData); + + ret = uea_request(sc, UEA_E1_SET_BLOCK, UEA_MPTX_START, + sizeof(cmv), &cmv); + if (ret < 0) + return ret; + ret = wait_cmv_ack(sc); + uea_leaves(INS_TO_USBDEV(sc)); + return ret; +} + +static int uea_cmv_e4(struct uea_softc *sc, + u16 function, u16 group, u16 address, u16 offset, u32 data) +{ + struct cmv_e4 cmv; + int ret; + + uea_enters(INS_TO_USBDEV(sc)); + memset(&cmv, 0, sizeof(cmv)); + + uea_vdbg(INS_TO_USBDEV(sc), "Function : %d-%d, Group : 0x%04x, " + "Address : 0x%04x, offset : 0x%04x, data : 0x%08x\n", + E4_FUNCTION_TYPE(function), E4_FUNCTION_SUBTYPE(function), + group, address, offset, data); + + /* we send a request, but we expect a reply */ + sc->cmv_dsc.e4.function = function | (0x1 << 4); + sc->cmv_dsc.e4.offset = offset; + sc->cmv_dsc.e4.address = address; + sc->cmv_dsc.e4.group = group; + + cmv.wFunction = cpu_to_be16(function); + cmv.wGroup = cpu_to_be16(group); + cmv.wAddress = cpu_to_be16(address); + cmv.wOffset = cpu_to_be16(offset); + cmv.dwData[0] = cpu_to_be32(data); + + ret = uea_request(sc, UEA_E4_SET_BLOCK, UEA_MPTX_START, + sizeof(cmv), &cmv); + if (ret < 0) + return ret; + ret = wait_cmv_ack(sc); + uea_leaves(INS_TO_USBDEV(sc)); + return ret; +} + +static inline int uea_read_cmv_e1(struct uea_softc *sc, + u32 address, u16 offset, u32 *data) +{ + int ret = uea_cmv_e1(sc, E1_MAKEFUNCTION(E1_MEMACCESS, E1_REQUESTREAD), + address, offset, 0); + if (ret < 0) + uea_err(INS_TO_USBDEV(sc), + "reading cmv failed with error %d\n", ret); + else + *data = sc->data; + + return ret; +} + +static inline int uea_read_cmv_e4(struct uea_softc *sc, + u8 size, u16 group, u16 address, u16 offset, u32 *data) +{ + int ret = uea_cmv_e4(sc, E4_MAKEFUNCTION(E4_MEMACCESS, + E4_REQUESTREAD, size), + group, address, offset, 0); + if (ret < 0) + uea_err(INS_TO_USBDEV(sc), + "reading cmv failed with error %d\n", ret); + else { + *data = sc->data; + /* size is in 16-bit word quantities */ + if (size > 2) + *(data + 1) = sc->data1; + } + return ret; +} + +static inline int uea_write_cmv_e1(struct uea_softc *sc, + u32 address, u16 offset, u32 data) +{ + int ret = uea_cmv_e1(sc, E1_MAKEFUNCTION(E1_MEMACCESS, E1_REQUESTWRITE), + address, offset, data); + if (ret < 0) + uea_err(INS_TO_USBDEV(sc), + "writing cmv failed with error %d\n", ret); + + return ret; +} + +static inline int uea_write_cmv_e4(struct uea_softc *sc, + u8 size, u16 group, u16 address, u16 offset, u32 data) +{ + int ret = uea_cmv_e4(sc, E4_MAKEFUNCTION(E4_MEMACCESS, + E4_REQUESTWRITE, size), + group, address, offset, data); + if (ret < 0) + uea_err(INS_TO_USBDEV(sc), + "writing cmv failed with error %d\n", ret); + + return ret; +} + +static void uea_set_bulk_timeout(struct uea_softc *sc, u32 dsrate) +{ + int ret; + u16 timeout; + + /* in bulk mode the modem have problem with high rate + * changing internal timing could improve things, but the + * value is mysterious. + * ADI930 don't support it (-EPIPE error). + */ + + if (UEA_CHIP_VERSION(sc) == ADI930 || + altsetting[sc->modem_index] > 0 || + sc->stats.phy.dsrate == dsrate) + return; + + /* Original timming (1Mbit/s) from ADI (used in windows driver) */ + timeout = (dsrate <= 1024*1024) ? 0 : 1; + ret = uea_request(sc, UEA_SET_TIMEOUT, timeout, 0, NULL); + uea_info(INS_TO_USBDEV(sc), "setting new timeout %d%s\n", + timeout, ret < 0 ? " failed" : ""); + +} + +/* + * Monitor the modem and update the stat + * return 0 if everything is ok + * return < 0 if an error occurs (-EAGAIN reboot needed) + */ +static int uea_stat_e1(struct uea_softc *sc) +{ + u32 data; + int ret; + + uea_enters(INS_TO_USBDEV(sc)); + data = sc->stats.phy.state; + + ret = uea_read_cmv_e1(sc, E1_SA_STAT, 0, &sc->stats.phy.state); + if (ret < 0) + return ret; + + switch (GET_STATUS(sc->stats.phy.state)) { + case 0: /* not yet synchronized */ + uea_dbg(INS_TO_USBDEV(sc), + "modem not yet synchronized\n"); + return 0; + + case 1: /* initialization */ + uea_dbg(INS_TO_USBDEV(sc), "modem initializing\n"); + return 0; + + case 2: /* operational */ + uea_vdbg(INS_TO_USBDEV(sc), "modem operational\n"); + break; + + case 3: /* fail ... */ + uea_info(INS_TO_USBDEV(sc), "modem synchronization failed" + " (may be try other cmv/dsp)\n"); + return -EAGAIN; + + case 4 ... 6: /* test state */ + uea_warn(INS_TO_USBDEV(sc), + "modem in test mode - not supported\n"); + return -EAGAIN; + + case 7: /* fast-retain ... */ + uea_info(INS_TO_USBDEV(sc), "modem in fast-retain mode\n"); + return 0; + default: + uea_err(INS_TO_USBDEV(sc), "modem invalid SW mode %d\n", + GET_STATUS(sc->stats.phy.state)); + return -EAGAIN; + } + + if (GET_STATUS(data) != 2) { + uea_request(sc, UEA_SET_MODE, UEA_LOOPBACK_OFF, 0, NULL); + uea_info(INS_TO_USBDEV(sc), "modem operational\n"); + + /* release the dsp firmware as it is not needed until + * the next failure + */ + release_firmware(sc->dsp_firm); + sc->dsp_firm = NULL; + } + + /* always update it as atm layer could not be init when we switch to + * operational state + */ + UPDATE_ATM_SIGNAL(ATM_PHY_SIG_FOUND); + + /* wake up processes waiting for synchronization */ + wake_up(&sc->sync_q); + + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 2, &sc->stats.phy.flags); + if (ret < 0) + return ret; + sc->stats.phy.mflags |= sc->stats.phy.flags; + + /* in case of a flags ( for example delineation LOSS (& 0x10)), + * we check the status again in order to detect the failure earlier + */ + if (sc->stats.phy.flags) { + uea_dbg(INS_TO_USBDEV(sc), "Stat flag = 0x%x\n", + sc->stats.phy.flags); + return 0; + } + + ret = uea_read_cmv_e1(sc, E1_SA_RATE, 0, &data); + if (ret < 0) + return ret; + + uea_set_bulk_timeout(sc, (data >> 16) * 32); + sc->stats.phy.dsrate = (data >> 16) * 32; + sc->stats.phy.usrate = (data & 0xffff) * 32; + UPDATE_ATM_STAT(link_rate, sc->stats.phy.dsrate * 1000 / 424); + + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 23, &data); + if (ret < 0) + return ret; + sc->stats.phy.dsattenuation = (data & 0xff) / 2; + + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 47, &data); + if (ret < 0) + return ret; + sc->stats.phy.usattenuation = (data & 0xff) / 2; + + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 25, &sc->stats.phy.dsmargin); + if (ret < 0) + return ret; + + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 49, &sc->stats.phy.usmargin); + if (ret < 0) + return ret; + + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 51, &sc->stats.phy.rxflow); + if (ret < 0) + return ret; + + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 52, &sc->stats.phy.txflow); + if (ret < 0) + return ret; + + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 54, &sc->stats.phy.dsunc); + if (ret < 0) + return ret; + + /* only for atu-c */ + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 58, &sc->stats.phy.usunc); + if (ret < 0) + return ret; + + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 53, &sc->stats.phy.dscorr); + if (ret < 0) + return ret; + + /* only for atu-c */ + ret = uea_read_cmv_e1(sc, E1_SA_DIAG, 57, &sc->stats.phy.uscorr); + if (ret < 0) + return ret; + + ret = uea_read_cmv_e1(sc, E1_SA_INFO, 8, &sc->stats.phy.vidco); + if (ret < 0) + return ret; + + ret = uea_read_cmv_e1(sc, E1_SA_INFO, 13, &sc->stats.phy.vidcpe); + if (ret < 0) + return ret; + + return 0; +} + +static int uea_stat_e4(struct uea_softc *sc) +{ + u32 data; + u32 tmp_arr[2]; + int ret; + + uea_enters(INS_TO_USBDEV(sc)); + data = sc->stats.phy.state; + + /* XXX only need to be done before operationnal... */ + ret = uea_read_cmv_e4(sc, 1, E4_SA_STAT, 0, 0, &sc->stats.phy.state); + if (ret < 0) + return ret; + + switch (sc->stats.phy.state) { + case 0x0: /* not yet synchronized */ + case 0x1: + case 0x3: + case 0x4: + uea_dbg(INS_TO_USBDEV(sc), "modem not yet " + "synchronized\n"); + return 0; + case 0x5: /* initialization */ + case 0x6: + case 0x9: + case 0xa: + uea_dbg(INS_TO_USBDEV(sc), "modem initializing\n"); + return 0; + case 0x2: /* fail ... */ + uea_info(INS_TO_USBDEV(sc), "modem synchronization " + "failed (may be try other cmv/dsp)\n"); + return -EAGAIN; + case 0x7: /* operational */ + break; + default: + uea_warn(INS_TO_USBDEV(sc), "unknown state: %x\n", + sc->stats.phy.state); + return 0; + } + + if (data != 7) { + uea_request(sc, UEA_SET_MODE, UEA_LOOPBACK_OFF, 0, NULL); + uea_info(INS_TO_USBDEV(sc), "modem operational\n"); + + /* release the dsp firmware as it is not needed until + * the next failure + */ + release_firmware(sc->dsp_firm); + sc->dsp_firm = NULL; + } + + /* always update it as atm layer could not be init when we switch to + * operational state + */ + UPDATE_ATM_SIGNAL(ATM_PHY_SIG_FOUND); + + /* wake up processes waiting for synchronization */ + wake_up(&sc->sync_q); + + /* TODO improve this state machine : + * we need some CMV info : what they do and their unit + * we should find the equivalent of eagle3- CMV + */ + /* check flags */ + ret = uea_read_cmv_e4(sc, 1, E4_SA_DIAG, 0, 0, &sc->stats.phy.flags); + if (ret < 0) + return ret; + sc->stats.phy.mflags |= sc->stats.phy.flags; + + /* in case of a flags ( for example delineation LOSS (& 0x10)), + * we check the status again in order to detect the failure earlier + */ + if (sc->stats.phy.flags) { + uea_dbg(INS_TO_USBDEV(sc), "Stat flag = 0x%x\n", + sc->stats.phy.flags); + if (sc->stats.phy.flags & 1) /* delineation LOSS */ + return -EAGAIN; + if (sc->stats.phy.flags & 0x4000) /* Reset Flag */ + return -EAGAIN; + return 0; + } + + /* rate data may be in upper or lower half of 64 bit word, strange */ + ret = uea_read_cmv_e4(sc, 4, E4_SA_RATE, 0, 0, tmp_arr); + if (ret < 0) + return ret; + data = (tmp_arr[0]) ? tmp_arr[0] : tmp_arr[1]; + sc->stats.phy.usrate = data / 1000; + + ret = uea_read_cmv_e4(sc, 4, E4_SA_RATE, 1, 0, tmp_arr); + if (ret < 0) + return ret; + data = (tmp_arr[0]) ? tmp_arr[0] : tmp_arr[1]; + uea_set_bulk_timeout(sc, data / 1000); + sc->stats.phy.dsrate = data / 1000; + UPDATE_ATM_STAT(link_rate, sc->stats.phy.dsrate * 1000 / 424); + + ret = uea_read_cmv_e4(sc, 1, E4_SA_INFO, 68, 1, &data); + if (ret < 0) + return ret; + sc->stats.phy.dsattenuation = data / 10; + + ret = uea_read_cmv_e4(sc, 1, E4_SA_INFO, 69, 1, &data); + if (ret < 0) + return ret; + sc->stats.phy.usattenuation = data / 10; + + ret = uea_read_cmv_e4(sc, 1, E4_SA_INFO, 68, 3, &data); + if (ret < 0) + return ret; + sc->stats.phy.dsmargin = data / 2; + + ret = uea_read_cmv_e4(sc, 1, E4_SA_INFO, 69, 3, &data); + if (ret < 0) + return ret; + sc->stats.phy.usmargin = data / 10; + + return 0; +} + +static void cmvs_file_name(struct uea_softc *sc, char *const cmv_name, int ver) +{ + char file_arr[] = "CMVxy.bin"; + char *file; + + kparam_block_sysfs_write(cmv_file); + /* set proper name corresponding modem version and line type */ + if (cmv_file[sc->modem_index] == NULL) { + if (UEA_CHIP_VERSION(sc) == ADI930) + file_arr[3] = '9'; + else if (UEA_CHIP_VERSION(sc) == EAGLE_IV) + file_arr[3] = '4'; + else + file_arr[3] = 'e'; + + file_arr[4] = IS_ISDN(sc) ? 'i' : 'p'; + file = file_arr; + } else + file = cmv_file[sc->modem_index]; + + strcpy(cmv_name, FW_DIR); + strlcat(cmv_name, file, UEA_FW_NAME_MAX); + if (ver == 2) + strlcat(cmv_name, ".v2", UEA_FW_NAME_MAX); + kparam_unblock_sysfs_write(cmv_file); +} + +static int request_cmvs_old(struct uea_softc *sc, + void **cmvs, const struct firmware **fw) +{ + int ret, size; + u8 *data; + char cmv_name[UEA_FW_NAME_MAX]; /* 30 bytes stack variable */ + + cmvs_file_name(sc, cmv_name, 1); + ret = request_firmware(fw, cmv_name, &sc->usb_dev->dev); + if (ret < 0) { + uea_err(INS_TO_USBDEV(sc), + "requesting firmware %s failed with error %d\n", + cmv_name, ret); + return ret; + } + + data = (u8 *) (*fw)->data; + size = (*fw)->size; + if (size < 1) + goto err_fw_corrupted; + + if (size != *data * sizeof(struct uea_cmvs_v1) + 1) + goto err_fw_corrupted; + + *cmvs = (void *)(data + 1); + return *data; + +err_fw_corrupted: + uea_err(INS_TO_USBDEV(sc), "firmware %s is corrupted\n", cmv_name); + release_firmware(*fw); + return -EILSEQ; +} + +static int request_cmvs(struct uea_softc *sc, + void **cmvs, const struct firmware **fw, int *ver) +{ + int ret, size; + u32 crc; + u8 *data; + char cmv_name[UEA_FW_NAME_MAX]; /* 30 bytes stack variable */ + + cmvs_file_name(sc, cmv_name, 2); + ret = request_firmware(fw, cmv_name, &sc->usb_dev->dev); + if (ret < 0) { + /* if caller can handle old version, try to provide it */ + if (*ver == 1) { + uea_warn(INS_TO_USBDEV(sc), "requesting " + "firmware %s failed, " + "try to get older cmvs\n", cmv_name); + return request_cmvs_old(sc, cmvs, fw); + } + uea_err(INS_TO_USBDEV(sc), + "requesting firmware %s failed with error %d\n", + cmv_name, ret); + return ret; + } + + size = (*fw)->size; + data = (u8 *) (*fw)->data; + if (size < 4 || strncmp(data, "cmv2", 4) != 0) { + if (*ver == 1) { + uea_warn(INS_TO_USBDEV(sc), "firmware %s is corrupted," + " try to get older cmvs\n", cmv_name); + release_firmware(*fw); + return request_cmvs_old(sc, cmvs, fw); + } + goto err_fw_corrupted; + } + + *ver = 2; + + data += 4; + size -= 4; + if (size < 5) + goto err_fw_corrupted; + + crc = get_unaligned_le32(data); + data += 4; + size -= 4; + if (crc32_be(0, data, size) != crc) + goto err_fw_corrupted; + + if (size != *data * sizeof(struct uea_cmvs_v2) + 1) + goto err_fw_corrupted; + + *cmvs = (void *) (data + 1); + return *data; + +err_fw_corrupted: + uea_err(INS_TO_USBDEV(sc), "firmware %s is corrupted\n", cmv_name); + release_firmware(*fw); + return -EILSEQ; +} + +static int uea_send_cmvs_e1(struct uea_softc *sc) +{ + int i, ret, len; + void *cmvs_ptr; + const struct firmware *cmvs_fw; + int ver = 1; /* we can handle v1 cmv firmware version; */ + + /* Enter in R-IDLE (cmv) until instructed otherwise */ + ret = uea_write_cmv_e1(sc, E1_SA_CNTL, 0, 1); + if (ret < 0) + return ret; + + /* Dump firmware version */ + ret = uea_read_cmv_e1(sc, E1_SA_INFO, 10, &sc->stats.phy.firmid); + if (ret < 0) + return ret; + uea_info(INS_TO_USBDEV(sc), "ATU-R firmware version : %x\n", + sc->stats.phy.firmid); + + /* get options */ + ret = len = request_cmvs(sc, &cmvs_ptr, &cmvs_fw, &ver); + if (ret < 0) + return ret; + + /* send options */ + if (ver == 1) { + struct uea_cmvs_v1 *cmvs_v1 = cmvs_ptr; + + uea_warn(INS_TO_USBDEV(sc), "use deprecated cmvs version, " + "please update your firmware\n"); + + for (i = 0; i < len; i++) { + ret = uea_write_cmv_e1(sc, + get_unaligned_le32(&cmvs_v1[i].address), + get_unaligned_le16(&cmvs_v1[i].offset), + get_unaligned_le32(&cmvs_v1[i].data)); + if (ret < 0) + goto out; + } + } else if (ver == 2) { + struct uea_cmvs_v2 *cmvs_v2 = cmvs_ptr; + + for (i = 0; i < len; i++) { + ret = uea_write_cmv_e1(sc, + get_unaligned_le32(&cmvs_v2[i].address), + (u16) get_unaligned_le32(&cmvs_v2[i].offset), + get_unaligned_le32(&cmvs_v2[i].data)); + if (ret < 0) + goto out; + } + } else { + /* This really should not happen */ + uea_err(INS_TO_USBDEV(sc), "bad cmvs version %d\n", ver); + goto out; + } + + /* Enter in R-ACT-REQ */ + ret = uea_write_cmv_e1(sc, E1_SA_CNTL, 0, 2); + uea_vdbg(INS_TO_USBDEV(sc), "Entering in R-ACT-REQ state\n"); + uea_info(INS_TO_USBDEV(sc), "modem started, waiting " + "synchronization...\n"); +out: + release_firmware(cmvs_fw); + return ret; +} + +static int uea_send_cmvs_e4(struct uea_softc *sc) +{ + int i, ret, len; + void *cmvs_ptr; + const struct firmware *cmvs_fw; + int ver = 2; /* we can only handle v2 cmv firmware version; */ + + /* Enter in R-IDLE (cmv) until instructed otherwise */ + ret = uea_write_cmv_e4(sc, 1, E4_SA_CNTL, 0, 0, 1); + if (ret < 0) + return ret; + + /* Dump firmware version */ + /* XXX don't read the 3th byte as it is always 6 */ + ret = uea_read_cmv_e4(sc, 2, E4_SA_INFO, 55, 0, &sc->stats.phy.firmid); + if (ret < 0) + return ret; + uea_info(INS_TO_USBDEV(sc), "ATU-R firmware version : %x\n", + sc->stats.phy.firmid); + + + /* get options */ + ret = len = request_cmvs(sc, &cmvs_ptr, &cmvs_fw, &ver); + if (ret < 0) + return ret; + + /* send options */ + if (ver == 2) { + struct uea_cmvs_v2 *cmvs_v2 = cmvs_ptr; + + for (i = 0; i < len; i++) { + ret = uea_write_cmv_e4(sc, 1, + get_unaligned_le32(&cmvs_v2[i].group), + get_unaligned_le32(&cmvs_v2[i].address), + get_unaligned_le32(&cmvs_v2[i].offset), + get_unaligned_le32(&cmvs_v2[i].data)); + if (ret < 0) + goto out; + } + } else { + /* This really should not happen */ + uea_err(INS_TO_USBDEV(sc), "bad cmvs version %d\n", ver); + goto out; + } + + /* Enter in R-ACT-REQ */ + ret = uea_write_cmv_e4(sc, 1, E4_SA_CNTL, 0, 0, 2); + uea_vdbg(INS_TO_USBDEV(sc), "Entering in R-ACT-REQ state\n"); + uea_info(INS_TO_USBDEV(sc), "modem started, waiting " + "synchronization...\n"); +out: + release_firmware(cmvs_fw); + return ret; +} + +/* Start boot post firmware modem: + * - send reset commands through usb control pipe + * - start workqueue for DSP loading + * - send CMV options to modem + */ + +static int uea_start_reset(struct uea_softc *sc) +{ + u16 zero = 0; /* ;-) */ + int ret; + + uea_enters(INS_TO_USBDEV(sc)); + uea_info(INS_TO_USBDEV(sc), "(re)booting started\n"); + + /* mask interrupt */ + sc->booting = 1; + /* We need to set this here because, a ack timeout could have occurred, + * but before we start the reboot, the ack occurs and set this to 1. + * So we will failed to wait Ready CMV. + */ + sc->cmv_ack = 0; + UPDATE_ATM_SIGNAL(ATM_PHY_SIG_LOST); + + /* reset statistics */ + memset(&sc->stats, 0, sizeof(struct uea_stats)); + + /* tell the modem that we want to boot in IDMA mode */ + uea_request(sc, UEA_SET_MODE, UEA_LOOPBACK_ON, 0, NULL); + uea_request(sc, UEA_SET_MODE, UEA_BOOT_IDMA, 0, NULL); + + /* enter reset mode */ + uea_request(sc, UEA_SET_MODE, UEA_START_RESET, 0, NULL); + + /* original driver use 200ms, but windows driver use 100ms */ + ret = uea_wait(sc, 0, msecs_to_jiffies(100)); + if (ret < 0) + return ret; + + /* leave reset mode */ + uea_request(sc, UEA_SET_MODE, UEA_END_RESET, 0, NULL); + + if (UEA_CHIP_VERSION(sc) != EAGLE_IV) { + /* clear tx and rx mailboxes */ + uea_request(sc, UEA_SET_2183_DATA, UEA_MPTX_MAILBOX, 2, &zero); + uea_request(sc, UEA_SET_2183_DATA, UEA_MPRX_MAILBOX, 2, &zero); + uea_request(sc, UEA_SET_2183_DATA, UEA_SWAP_MAILBOX, 2, &zero); + } + + ret = uea_wait(sc, 0, msecs_to_jiffies(1000)); + if (ret < 0) + return ret; + + if (UEA_CHIP_VERSION(sc) == EAGLE_IV) + sc->cmv_dsc.e4.function = E4_MAKEFUNCTION(E4_ADSLDIRECTIVE, + E4_MODEMREADY, 1); + else + sc->cmv_dsc.e1.function = E1_MAKEFUNCTION(E1_ADSLDIRECTIVE, + E1_MODEMREADY); + + /* demask interrupt */ + sc->booting = 0; + + /* start loading DSP */ + sc->pageno = 0; + sc->ovl = 0; + schedule_work(&sc->task); + + /* wait for modem ready CMV */ + ret = wait_cmv_ack(sc); + if (ret < 0) + return ret; + + uea_vdbg(INS_TO_USBDEV(sc), "Ready CMV received\n"); + + ret = sc->send_cmvs(sc); + if (ret < 0) + return ret; + + sc->reset = 0; + uea_leaves(INS_TO_USBDEV(sc)); + return ret; +} + +/* + * In case of an error wait 1s before rebooting the modem + * if the modem don't request reboot (-EAGAIN). + * Monitor the modem every 1s. + */ + +static int uea_kthread(void *data) +{ + struct uea_softc *sc = data; + int ret = -EAGAIN; + + set_freezable(); + uea_enters(INS_TO_USBDEV(sc)); + while (!kthread_should_stop()) { + if (ret < 0 || sc->reset) + ret = uea_start_reset(sc); + if (!ret) + ret = sc->stat(sc); + if (ret != -EAGAIN) + uea_wait(sc, 0, msecs_to_jiffies(1000)); + try_to_freeze(); + } + uea_leaves(INS_TO_USBDEV(sc)); + return ret; +} + +/* Load second usb firmware for ADI930 chip */ +static int load_XILINX_firmware(struct uea_softc *sc) +{ + const struct firmware *fw_entry; + int ret, size, u, ln; + const u8 *pfw; + u8 value; + char *fw_name = FPGA930_FIRMWARE; + + uea_enters(INS_TO_USBDEV(sc)); + + ret = request_firmware(&fw_entry, fw_name, &sc->usb_dev->dev); + if (ret) { + uea_err(INS_TO_USBDEV(sc), "firmware %s is not available\n", + fw_name); + goto err0; + } + + pfw = fw_entry->data; + size = fw_entry->size; + if (size != 0x577B) { + uea_err(INS_TO_USBDEV(sc), "firmware %s is corrupted\n", + fw_name); + ret = -EILSEQ; + goto err1; + } + for (u = 0; u < size; u += ln) { + ln = min(size - u, 64); + ret = uea_request(sc, 0xe, 0, ln, pfw + u); + if (ret < 0) { + uea_err(INS_TO_USBDEV(sc), + "elsa download data failed (%d)\n", ret); + goto err1; + } + } + + /* finish to send the fpga */ + ret = uea_request(sc, 0xe, 1, 0, NULL); + if (ret < 0) { + uea_err(INS_TO_USBDEV(sc), + "elsa download data failed (%d)\n", ret); + goto err1; + } + + /* Tell the modem we finish : de-assert reset */ + value = 0; + ret = uea_send_modem_cmd(sc->usb_dev, 0xe, 1, &value); + if (ret < 0) + uea_err(sc->usb_dev, "elsa de-assert failed with error" + " %d\n", ret); + +err1: + release_firmware(fw_entry); +err0: + uea_leaves(INS_TO_USBDEV(sc)); + return ret; +} + +/* The modem send us an ack. First with check if it right */ +static void uea_dispatch_cmv_e1(struct uea_softc *sc, struct intr_pkt *intr) +{ + struct cmv_dsc_e1 *dsc = &sc->cmv_dsc.e1; + struct cmv_e1 *cmv = &intr->u.e1.s2.cmv; + + uea_enters(INS_TO_USBDEV(sc)); + if (le16_to_cpu(cmv->wPreamble) != E1_PREAMBLE) + goto bad1; + + if (cmv->bDirection != E1_MODEMTOHOST) + goto bad1; + + /* FIXME : ADI930 reply wrong preambule (func = 2, sub = 2) to + * the first MEMACCESS cmv. Ignore it... + */ + if (cmv->bFunction != dsc->function) { + if (UEA_CHIP_VERSION(sc) == ADI930 + && cmv->bFunction == E1_MAKEFUNCTION(2, 2)) { + cmv->wIndex = cpu_to_le16(dsc->idx); + put_unaligned_le32(dsc->address, + &cmv->dwSymbolicAddress); + cmv->wOffsetAddress = cpu_to_le16(dsc->offset); + } else + goto bad2; + } + + if (cmv->bFunction == E1_MAKEFUNCTION(E1_ADSLDIRECTIVE, + E1_MODEMREADY)) { + wake_up_cmv_ack(sc); + uea_leaves(INS_TO_USBDEV(sc)); + return; + } + + /* in case of MEMACCESS */ + if (le16_to_cpu(cmv->wIndex) != dsc->idx || + get_unaligned_le32(&cmv->dwSymbolicAddress) != dsc->address || + le16_to_cpu(cmv->wOffsetAddress) != dsc->offset) + goto bad2; + + sc->data = get_unaligned_le32(&cmv->dwData); + sc->data = sc->data << 16 | sc->data >> 16; + + wake_up_cmv_ack(sc); + uea_leaves(INS_TO_USBDEV(sc)); + return; + +bad2: + uea_err(INS_TO_USBDEV(sc), "unexpected cmv received, " + "Function : %d, Subfunction : %d\n", + E1_FUNCTION_TYPE(cmv->bFunction), + E1_FUNCTION_SUBTYPE(cmv->bFunction)); + uea_leaves(INS_TO_USBDEV(sc)); + return; + +bad1: + uea_err(INS_TO_USBDEV(sc), "invalid cmv received, " + "wPreamble %d, bDirection %d\n", + le16_to_cpu(cmv->wPreamble), cmv->bDirection); + uea_leaves(INS_TO_USBDEV(sc)); +} + +/* The modem send us an ack. First with check if it right */ +static void uea_dispatch_cmv_e4(struct uea_softc *sc, struct intr_pkt *intr) +{ + struct cmv_dsc_e4 *dsc = &sc->cmv_dsc.e4; + struct cmv_e4 *cmv = &intr->u.e4.s2.cmv; + + uea_enters(INS_TO_USBDEV(sc)); + uea_dbg(INS_TO_USBDEV(sc), "cmv %x %x %x %x %x %x\n", + be16_to_cpu(cmv->wGroup), be16_to_cpu(cmv->wFunction), + be16_to_cpu(cmv->wOffset), be16_to_cpu(cmv->wAddress), + be32_to_cpu(cmv->dwData[0]), be32_to_cpu(cmv->dwData[1])); + + if (be16_to_cpu(cmv->wFunction) != dsc->function) + goto bad2; + + if (be16_to_cpu(cmv->wFunction) == E4_MAKEFUNCTION(E4_ADSLDIRECTIVE, + E4_MODEMREADY, 1)) { + wake_up_cmv_ack(sc); + uea_leaves(INS_TO_USBDEV(sc)); + return; + } + + /* in case of MEMACCESS */ + if (be16_to_cpu(cmv->wOffset) != dsc->offset || + be16_to_cpu(cmv->wGroup) != dsc->group || + be16_to_cpu(cmv->wAddress) != dsc->address) + goto bad2; + + sc->data = be32_to_cpu(cmv->dwData[0]); + sc->data1 = be32_to_cpu(cmv->dwData[1]); + wake_up_cmv_ack(sc); + uea_leaves(INS_TO_USBDEV(sc)); + return; + +bad2: + uea_err(INS_TO_USBDEV(sc), "unexpected cmv received, " + "Function : %d, Subfunction : %d\n", + E4_FUNCTION_TYPE(cmv->wFunction), + E4_FUNCTION_SUBTYPE(cmv->wFunction)); + uea_leaves(INS_TO_USBDEV(sc)); + return; +} + +static void uea_schedule_load_page_e1(struct uea_softc *sc, + struct intr_pkt *intr) +{ + sc->pageno = intr->e1_bSwapPageNo; + sc->ovl = intr->e1_bOvl >> 4 | intr->e1_bOvl << 4; + schedule_work(&sc->task); +} + +static void uea_schedule_load_page_e4(struct uea_softc *sc, + struct intr_pkt *intr) +{ + sc->pageno = intr->e4_bSwapPageNo; + schedule_work(&sc->task); +} + +/* + * interrupt handler + */ +static void uea_intr(struct urb *urb) +{ + struct uea_softc *sc = urb->context; + struct intr_pkt *intr = urb->transfer_buffer; + int status = urb->status; + + uea_enters(INS_TO_USBDEV(sc)); + + if (unlikely(status < 0)) { + uea_err(INS_TO_USBDEV(sc), "uea_intr() failed with %d\n", + status); + return; + } + + /* device-to-host interrupt */ + if (intr->bType != 0x08 || sc->booting) { + uea_err(INS_TO_USBDEV(sc), "wrong interrupt\n"); + goto resubmit; + } + + switch (le16_to_cpu(intr->wInterrupt)) { + case INT_LOADSWAPPAGE: + sc->schedule_load_page(sc, intr); + break; + + case INT_INCOMINGCMV: + sc->dispatch_cmv(sc, intr); + break; + + default: + uea_err(INS_TO_USBDEV(sc), "unknown interrupt %u\n", + le16_to_cpu(intr->wInterrupt)); + } + +resubmit: + usb_submit_urb(sc->urb_int, GFP_ATOMIC); +} + +/* + * Start the modem : init the data and start kernel thread + */ +static int uea_boot(struct uea_softc *sc) +{ + int ret, size; + struct intr_pkt *intr; + + uea_enters(INS_TO_USBDEV(sc)); + + if (UEA_CHIP_VERSION(sc) == EAGLE_IV) { + size = E4_INTR_PKT_SIZE; + sc->dispatch_cmv = uea_dispatch_cmv_e4; + sc->schedule_load_page = uea_schedule_load_page_e4; + sc->stat = uea_stat_e4; + sc->send_cmvs = uea_send_cmvs_e4; + INIT_WORK(&sc->task, uea_load_page_e4); + } else { + size = E1_INTR_PKT_SIZE; + sc->dispatch_cmv = uea_dispatch_cmv_e1; + sc->schedule_load_page = uea_schedule_load_page_e1; + sc->stat = uea_stat_e1; + sc->send_cmvs = uea_send_cmvs_e1; + INIT_WORK(&sc->task, uea_load_page_e1); + } + + init_waitqueue_head(&sc->sync_q); + + if (UEA_CHIP_VERSION(sc) == ADI930) + load_XILINX_firmware(sc); + + intr = kmalloc(size, GFP_KERNEL); + if (!intr) { + uea_err(INS_TO_USBDEV(sc), + "cannot allocate interrupt package\n"); + goto err0; + } + + sc->urb_int = usb_alloc_urb(0, GFP_KERNEL); + if (!sc->urb_int) { + uea_err(INS_TO_USBDEV(sc), "cannot allocate interrupt URB\n"); + goto err1; + } + + usb_fill_int_urb(sc->urb_int, sc->usb_dev, + usb_rcvintpipe(sc->usb_dev, UEA_INTR_PIPE), + intr, size, uea_intr, sc, + sc->usb_dev->actconfig->interface[0]->altsetting[0]. + endpoint[0].desc.bInterval); + + ret = usb_submit_urb(sc->urb_int, GFP_KERNEL); + if (ret < 0) { + uea_err(INS_TO_USBDEV(sc), + "urb submition failed with error %d\n", ret); + goto err1; + } + + /* Create worker thread, but don't start it here. Start it after + * all usbatm generic initialization is done. + */ + sc->kthread = kthread_create(uea_kthread, sc, "ueagle-atm"); + if (IS_ERR(sc->kthread)) { + uea_err(INS_TO_USBDEV(sc), "failed to create thread\n"); + goto err2; + } + + uea_leaves(INS_TO_USBDEV(sc)); + return 0; + +err2: + usb_kill_urb(sc->urb_int); +err1: + usb_free_urb(sc->urb_int); + sc->urb_int = NULL; + kfree(intr); +err0: + uea_leaves(INS_TO_USBDEV(sc)); + return -ENOMEM; +} + +/* + * Stop the modem : kill kernel thread and free data + */ +static void uea_stop(struct uea_softc *sc) +{ + int ret; + uea_enters(INS_TO_USBDEV(sc)); + ret = kthread_stop(sc->kthread); + uea_dbg(INS_TO_USBDEV(sc), "kthread finish with status %d\n", ret); + + uea_request(sc, UEA_SET_MODE, UEA_LOOPBACK_ON, 0, NULL); + + usb_kill_urb(sc->urb_int); + kfree(sc->urb_int->transfer_buffer); + usb_free_urb(sc->urb_int); + + /* flush the work item, when no one can schedule it */ + flush_work(&sc->task); + + release_firmware(sc->dsp_firm); + uea_leaves(INS_TO_USBDEV(sc)); +} + +/* syfs interface */ +static struct uea_softc *dev_to_uea(struct device *dev) +{ + struct usb_interface *intf; + struct usbatm_data *usbatm; + + intf = to_usb_interface(dev); + if (!intf) + return NULL; + + usbatm = usb_get_intfdata(intf); + if (!usbatm) + return NULL; + + return usbatm->driver_data; +} + +static ssize_t read_status(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int ret = -ENODEV; + struct uea_softc *sc; + + mutex_lock(&uea_mutex); + sc = dev_to_uea(dev); + if (!sc) + goto out; + ret = snprintf(buf, 10, "%08x\n", sc->stats.phy.state); +out: + mutex_unlock(&uea_mutex); + return ret; +} + +static ssize_t reboot(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int ret = -ENODEV; + struct uea_softc *sc; + + mutex_lock(&uea_mutex); + sc = dev_to_uea(dev); + if (!sc) + goto out; + sc->reset = 1; + ret = count; +out: + mutex_unlock(&uea_mutex); + return ret; +} + +static DEVICE_ATTR(stat_status, S_IWUSR | S_IRUGO, read_status, reboot); + +static ssize_t read_human_status(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int ret = -ENODEV; + int modem_state; + struct uea_softc *sc; + + mutex_lock(&uea_mutex); + sc = dev_to_uea(dev); + if (!sc) + goto out; + + if (UEA_CHIP_VERSION(sc) == EAGLE_IV) { + switch (sc->stats.phy.state) { + case 0x0: /* not yet synchronized */ + case 0x1: + case 0x3: + case 0x4: + modem_state = 0; + break; + case 0x5: /* initialization */ + case 0x6: + case 0x9: + case 0xa: + modem_state = 1; + break; + case 0x7: /* operational */ + modem_state = 2; + break; + case 0x2: /* fail ... */ + modem_state = 3; + break; + default: /* unknown */ + modem_state = 4; + break; + } + } else + modem_state = GET_STATUS(sc->stats.phy.state); + + switch (modem_state) { + case 0: + ret = sprintf(buf, "Modem is booting\n"); + break; + case 1: + ret = sprintf(buf, "Modem is initializing\n"); + break; + case 2: + ret = sprintf(buf, "Modem is operational\n"); + break; + case 3: + ret = sprintf(buf, "Modem synchronization failed\n"); + break; + default: + ret = sprintf(buf, "Modem state is unknown\n"); + break; + } +out: + mutex_unlock(&uea_mutex); + return ret; +} + +static DEVICE_ATTR(stat_human_status, S_IRUGO, read_human_status, NULL); + +static ssize_t read_delin(struct device *dev, struct device_attribute *attr, + char *buf) +{ + int ret = -ENODEV; + struct uea_softc *sc; + char *delin = "GOOD"; + + mutex_lock(&uea_mutex); + sc = dev_to_uea(dev); + if (!sc) + goto out; + + if (UEA_CHIP_VERSION(sc) == EAGLE_IV) { + if (sc->stats.phy.flags & 0x4000) + delin = "RESET"; + else if (sc->stats.phy.flags & 0x0001) + delin = "LOSS"; + } else { + if (sc->stats.phy.flags & 0x0C00) + delin = "ERROR"; + else if (sc->stats.phy.flags & 0x0030) + delin = "LOSS"; + } + + ret = sprintf(buf, "%s\n", delin); +out: + mutex_unlock(&uea_mutex); + return ret; +} + +static DEVICE_ATTR(stat_delin, S_IRUGO, read_delin, NULL); + +#define UEA_ATTR(name, reset) \ + \ +static ssize_t read_##name(struct device *dev, \ + struct device_attribute *attr, char *buf) \ +{ \ + int ret = -ENODEV; \ + struct uea_softc *sc; \ + \ + mutex_lock(&uea_mutex); \ + sc = dev_to_uea(dev); \ + if (!sc) \ + goto out; \ + ret = snprintf(buf, 10, "%08x\n", sc->stats.phy.name); \ + if (reset) \ + sc->stats.phy.name = 0; \ +out: \ + mutex_unlock(&uea_mutex); \ + return ret; \ +} \ + \ +static DEVICE_ATTR(stat_##name, S_IRUGO, read_##name, NULL) + +UEA_ATTR(mflags, 1); +UEA_ATTR(vidcpe, 0); +UEA_ATTR(usrate, 0); +UEA_ATTR(dsrate, 0); +UEA_ATTR(usattenuation, 0); +UEA_ATTR(dsattenuation, 0); +UEA_ATTR(usmargin, 0); +UEA_ATTR(dsmargin, 0); +UEA_ATTR(txflow, 0); +UEA_ATTR(rxflow, 0); +UEA_ATTR(uscorr, 0); +UEA_ATTR(dscorr, 0); +UEA_ATTR(usunc, 0); +UEA_ATTR(dsunc, 0); +UEA_ATTR(firmid, 0); + +/* Retrieve the device End System Identifier (MAC) */ + +static int uea_getesi(struct uea_softc *sc, u_char * esi) +{ + unsigned char mac_str[2 * ETH_ALEN + 1]; + int i; + if (usb_string + (sc->usb_dev, sc->usb_dev->descriptor.iSerialNumber, mac_str, + sizeof(mac_str)) != 2 * ETH_ALEN) + return 1; + + for (i = 0; i < ETH_ALEN; i++) + esi[i] = hex_to_bin(mac_str[2 * i]) * 16 + + hex_to_bin(mac_str[2 * i + 1]); + + return 0; +} + +/* ATM stuff */ +static int uea_atm_open(struct usbatm_data *usbatm, struct atm_dev *atm_dev) +{ + struct uea_softc *sc = usbatm->driver_data; + + return uea_getesi(sc, atm_dev->esi); +} + +static int uea_heavy(struct usbatm_data *usbatm, struct usb_interface *intf) +{ + struct uea_softc *sc = usbatm->driver_data; + + wait_event_interruptible(sc->sync_q, IS_OPERATIONAL(sc)); + + return 0; + +} + +static int claim_interface(struct usb_device *usb_dev, + struct usbatm_data *usbatm, int ifnum) +{ + int ret; + struct usb_interface *intf = usb_ifnum_to_if(usb_dev, ifnum); + + if (!intf) { + uea_err(usb_dev, "interface %d not found\n", ifnum); + return -ENODEV; + } + + ret = usb_driver_claim_interface(&uea_driver, intf, usbatm); + if (ret != 0) + uea_err(usb_dev, "can't claim interface %d, error %d\n", ifnum, + ret); + return ret; +} + +static struct attribute *attrs[] = { + &dev_attr_stat_status.attr, + &dev_attr_stat_mflags.attr, + &dev_attr_stat_human_status.attr, + &dev_attr_stat_delin.attr, + &dev_attr_stat_vidcpe.attr, + &dev_attr_stat_usrate.attr, + &dev_attr_stat_dsrate.attr, + &dev_attr_stat_usattenuation.attr, + &dev_attr_stat_dsattenuation.attr, + &dev_attr_stat_usmargin.attr, + &dev_attr_stat_dsmargin.attr, + &dev_attr_stat_txflow.attr, + &dev_attr_stat_rxflow.attr, + &dev_attr_stat_uscorr.attr, + &dev_attr_stat_dscorr.attr, + &dev_attr_stat_usunc.attr, + &dev_attr_stat_dsunc.attr, + &dev_attr_stat_firmid.attr, + NULL, +}; +static struct attribute_group attr_grp = { + .attrs = attrs, +}; + +static int uea_bind(struct usbatm_data *usbatm, struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct usb_device *usb = interface_to_usbdev(intf); + struct uea_softc *sc; + int ret, ifnum = intf->altsetting->desc.bInterfaceNumber; + unsigned int alt; + + uea_enters(usb); + + /* interface 0 is for firmware/monitoring */ + if (ifnum != UEA_INTR_IFACE_NO) + return -ENODEV; + + usbatm->flags = (sync_wait[modem_index] ? 0 : UDSL_SKIP_HEAVY_INIT); + + /* interface 1 is for outbound traffic */ + ret = claim_interface(usb, usbatm, UEA_US_IFACE_NO); + if (ret < 0) + return ret; + + /* ADI930 has only 2 interfaces and inbound traffic is on interface 1 */ + if (UEA_CHIP_VERSION(id) != ADI930) { + /* interface 2 is for inbound traffic */ + ret = claim_interface(usb, usbatm, UEA_DS_IFACE_NO); + if (ret < 0) + return ret; + } + + sc = kzalloc(sizeof(struct uea_softc), GFP_KERNEL); + if (!sc) { + uea_err(usb, "uea_init: not enough memory !\n"); + return -ENOMEM; + } + + sc->usb_dev = usb; + usbatm->driver_data = sc; + sc->usbatm = usbatm; + sc->modem_index = (modem_index < NB_MODEM) ? modem_index++ : 0; + sc->driver_info = id->driver_info; + + /* first try to use module parameter */ + if (annex[sc->modem_index] == 1) + sc->annex = ANNEXA; + else if (annex[sc->modem_index] == 2) + sc->annex = ANNEXB; + /* try to autodetect annex */ + else if (sc->driver_info & AUTO_ANNEX_A) + sc->annex = ANNEXA; + else if (sc->driver_info & AUTO_ANNEX_B) + sc->annex = ANNEXB; + else + sc->annex = (le16_to_cpu + (sc->usb_dev->descriptor.bcdDevice) & 0x80) ? ANNEXB : ANNEXA; + + alt = altsetting[sc->modem_index]; + /* ADI930 don't support iso */ + if (UEA_CHIP_VERSION(id) != ADI930 && alt > 0) { + if (alt <= 8 && + usb_set_interface(usb, UEA_DS_IFACE_NO, alt) == 0) { + uea_dbg(usb, "set alternate %u for 2 interface\n", alt); + uea_info(usb, "using iso mode\n"); + usbatm->flags |= UDSL_USE_ISOC | UDSL_IGNORE_EILSEQ; + } else { + uea_err(usb, "setting alternate %u failed for " + "2 interface, using bulk mode\n", alt); + } + } + + ret = sysfs_create_group(&intf->dev.kobj, &attr_grp); + if (ret < 0) + goto error; + + ret = uea_boot(sc); + if (ret < 0) + goto error_rm_grp; + + return 0; + +error_rm_grp: + sysfs_remove_group(&intf->dev.kobj, &attr_grp); +error: + kfree(sc); + return ret; +} + +static void uea_unbind(struct usbatm_data *usbatm, struct usb_interface *intf) +{ + struct uea_softc *sc = usbatm->driver_data; + + sysfs_remove_group(&intf->dev.kobj, &attr_grp); + uea_stop(sc); + kfree(sc); +} + +static struct usbatm_driver uea_usbatm_driver = { + .driver_name = "ueagle-atm", + .bind = uea_bind, + .atm_start = uea_atm_open, + .unbind = uea_unbind, + .heavy_init = uea_heavy, + .bulk_in = UEA_BULK_DATA_PIPE, + .bulk_out = UEA_BULK_DATA_PIPE, + .isoc_in = UEA_ISO_DATA_PIPE, +}; + +static int uea_probe(struct usb_interface *intf, const struct usb_device_id *id) +{ + struct usb_device *usb = interface_to_usbdev(intf); + int ret; + + uea_enters(usb); + uea_info(usb, "ADSL device founded vid (%#X) pid (%#X) Rev (%#X): %s\n", + le16_to_cpu(usb->descriptor.idVendor), + le16_to_cpu(usb->descriptor.idProduct), + le16_to_cpu(usb->descriptor.bcdDevice), + chip_name[UEA_CHIP_VERSION(id)]); + + usb_reset_device(usb); + + if (UEA_IS_PREFIRM(id)) + return uea_load_firmware(usb, UEA_CHIP_VERSION(id)); + + ret = usbatm_usb_probe(intf, id, &uea_usbatm_driver); + if (ret == 0) { + struct usbatm_data *usbatm = usb_get_intfdata(intf); + struct uea_softc *sc = usbatm->driver_data; + + /* Ensure carrier is initialized to off as early as possible */ + UPDATE_ATM_SIGNAL(ATM_PHY_SIG_LOST); + + /* Only start the worker thread when all init is done */ + wake_up_process(sc->kthread); + } + + return ret; +} + +static void uea_disconnect(struct usb_interface *intf) +{ + struct usb_device *usb = interface_to_usbdev(intf); + int ifnum = intf->altsetting->desc.bInterfaceNumber; + uea_enters(usb); + + /* ADI930 has 2 interfaces and eagle 3 interfaces. + * Pre-firmware device has one interface + */ + if (usb->config->desc.bNumInterfaces != 1 && ifnum == 0) { + mutex_lock(&uea_mutex); + usbatm_usb_disconnect(intf); + mutex_unlock(&uea_mutex); + uea_info(usb, "ADSL device removed\n"); + } + + uea_leaves(usb); +} + +/* + * List of supported VID/PID + */ +static const struct usb_device_id uea_ids[] = { + {USB_DEVICE(ANALOG_VID, ADI930_PID_PREFIRM), + .driver_info = ADI930 | PREFIRM}, + {USB_DEVICE(ANALOG_VID, ADI930_PID_PSTFIRM), + .driver_info = ADI930 | PSTFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_I_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_I_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_II_PID_PREFIRM), + .driver_info = EAGLE_II | PREFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_II_PID_PSTFIRM), + .driver_info = EAGLE_II | PSTFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_IIC_PID_PREFIRM), + .driver_info = EAGLE_II | PREFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_IIC_PID_PSTFIRM), + .driver_info = EAGLE_II | PSTFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_III_PID_PREFIRM), + .driver_info = EAGLE_III | PREFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_III_PID_PSTFIRM), + .driver_info = EAGLE_III | PSTFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_IV_PID_PREFIRM), + .driver_info = EAGLE_IV | PREFIRM}, + {USB_DEVICE(ANALOG_VID, EAGLE_IV_PID_PSTFIRM), + .driver_info = EAGLE_IV | PSTFIRM}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_A_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_A_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_B_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_I_B_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_A_PID_PREFIRM), + .driver_info = EAGLE_II | PREFIRM}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_A_PID_PSTFIRM), + .driver_info = EAGLE_II | PSTFIRM | AUTO_ANNEX_A}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_B_PID_PREFIRM), + .driver_info = EAGLE_II | PREFIRM}, + {USB_DEVICE(DEVOLO_VID, DEVOLO_EAGLE_II_B_PID_PSTFIRM), + .driver_info = EAGLE_II | PSTFIRM | AUTO_ANNEX_B}, + {USB_DEVICE(ELSA_VID, ELSA_PID_PREFIRM), + .driver_info = ADI930 | PREFIRM}, + {USB_DEVICE(ELSA_VID, ELSA_PID_PSTFIRM), + .driver_info = ADI930 | PSTFIRM}, + {USB_DEVICE(ELSA_VID, ELSA_PID_A_PREFIRM), + .driver_info = ADI930 | PREFIRM}, + {USB_DEVICE(ELSA_VID, ELSA_PID_A_PSTFIRM), + .driver_info = ADI930 | PSTFIRM | AUTO_ANNEX_A}, + {USB_DEVICE(ELSA_VID, ELSA_PID_B_PREFIRM), + .driver_info = ADI930 | PREFIRM}, + {USB_DEVICE(ELSA_VID, ELSA_PID_B_PSTFIRM), + .driver_info = ADI930 | PSTFIRM | AUTO_ANNEX_B}, + {USB_DEVICE(USR_VID, MILLER_A_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(USR_VID, MILLER_A_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, + {USB_DEVICE(USR_VID, MILLER_B_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(USR_VID, MILLER_B_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, + {USB_DEVICE(USR_VID, HEINEKEN_A_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(USR_VID, HEINEKEN_A_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_A}, + {USB_DEVICE(USR_VID, HEINEKEN_B_PID_PREFIRM), + .driver_info = EAGLE_I | PREFIRM}, + {USB_DEVICE(USR_VID, HEINEKEN_B_PID_PSTFIRM), + .driver_info = EAGLE_I | PSTFIRM | AUTO_ANNEX_B}, + {} +}; + +/* + * USB driver descriptor + */ +static struct usb_driver uea_driver = { + .name = "ueagle-atm", + .id_table = uea_ids, + .probe = uea_probe, + .disconnect = uea_disconnect, +}; + +MODULE_DEVICE_TABLE(usb, uea_ids); + +module_usb_driver(uea_driver); + +MODULE_AUTHOR("Damien Bergamini/Matthieu Castet/Stanislaw W. Gruszka"); +MODULE_DESCRIPTION("ADI 930/Eagle USB ADSL Modem driver"); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_FIRMWARE(EAGLE_FIRMWARE); +MODULE_FIRMWARE(ADI930_FIRMWARE); +MODULE_FIRMWARE(EAGLE_I_FIRMWARE); +MODULE_FIRMWARE(EAGLE_II_FIRMWARE); +MODULE_FIRMWARE(EAGLE_III_FIRMWARE); +MODULE_FIRMWARE(EAGLE_IV_FIRMWARE); +MODULE_FIRMWARE(DSP4I_FIRMWARE); +MODULE_FIRMWARE(DSP4P_FIRMWARE); +MODULE_FIRMWARE(DSP9I_FIRMWARE); +MODULE_FIRMWARE(DSP9P_FIRMWARE); +MODULE_FIRMWARE(DSPEI_FIRMWARE); +MODULE_FIRMWARE(DSPEP_FIRMWARE); +MODULE_FIRMWARE(FPGA930_FIRMWARE); +MODULE_FIRMWARE(CMV4P_FIRMWARE); +MODULE_FIRMWARE(CMV4PV2_FIRMWARE); +MODULE_FIRMWARE(CMV4I_FIRMWARE); +MODULE_FIRMWARE(CMV4IV2_FIRMWARE); +MODULE_FIRMWARE(CMV9P_FIRMWARE); +MODULE_FIRMWARE(CMV9PV2_FIRMWARE); +MODULE_FIRMWARE(CMV9I_FIRMWARE); +MODULE_FIRMWARE(CMV9IV2_FIRMWARE); +MODULE_FIRMWARE(CMVEP_FIRMWARE); +MODULE_FIRMWARE(CMVEPV2_FIRMWARE); +MODULE_FIRMWARE(CMVEI_FIRMWARE); +MODULE_FIRMWARE(CMVEIV2_FIRMWARE); diff --git a/drivers/usb/atm/usb_atm.c b/drivers/usb/atm/usb_atm.c deleted file mode 100644 index a4cd4476d49..00000000000 --- a/drivers/usb/atm/usb_atm.c +++ /dev/null @@ -1,1188 +0,0 @@ -/****************************************************************************** - * usb_atm.c - Generic USB xDSL driver core - * - * Copyright (C) 2001, Alcatel - * Copyright (C) 2003, Duncan Sands, SolNegro, Josep Comas - * Copyright (C) 2004, David Woodhouse - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 59 - * Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - ******************************************************************************/ - -/* - * Written by Johan Verrept, maintained by Duncan Sands (duncan.sands@free.fr) - * - * 1.7+: - See the check-in logs - * - * 1.6: - No longer opens a connection if the firmware is not loaded - * - Added support for the speedtouch 330 - * - Removed the limit on the number of devices - * - Module now autoloads on device plugin - * - Merged relevant parts of sarlib - * - Replaced the kernel thread with a tasklet - * - New packet transmission code - * - Changed proc file contents - * - Fixed all known SMP races - * - Many fixes and cleanups - * - Various fixes by Oliver Neukum (oliver@neukum.name) - * - * 1.5A: - Version for inclusion in 2.5 series kernel - * - Modifications by Richard Purdie (rpurdie@rpsys.net) - * - made compatible with kernel 2.5.6 onwards by changing - * udsl_usb_send_data_context->urb to a pointer and adding code - * to alloc and free it - * - remove_wait_queue() added to udsl_atm_processqueue_thread() - * - * 1.5: - fixed memory leak when atmsar_decode_aal5 returned NULL. - * (reported by stephen.robinson@zen.co.uk) - * - * 1.4: - changed the spin_lock() under interrupt to spin_lock_irqsave() - * - unlink all active send urbs of a vcc that is being closed. - * - * 1.3.1: - added the version number - * - * 1.3: - Added multiple send urb support - * - fixed memory leak and vcc->tx_inuse starvation bug - * when not enough memory left in vcc. - * - * 1.2: - Fixed race condition in udsl_usb_send_data() - * 1.1: - Turned off packet debugging - * - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/timer.h> -#include <linux/errno.h> -#include <linux/proc_fs.h> -#include <linux/slab.h> -#include <linux/wait.h> -#include <linux/list.h> -#include <asm/uaccess.h> -#include <linux/smp_lock.h> -#include <linux/interrupt.h> -#include <linux/atm.h> -#include <linux/atmdev.h> -#include <linux/crc32.h> -#include <linux/init.h> -#include <linux/firmware.h> - -#include "usb_atm.h" - -#ifdef VERBOSE_DEBUG -static int udsl_print_packet(const unsigned char *data, int len); -#define PACKETDEBUG(arg...) udsl_print_packet (arg) -#define vdbg(arg...) dbg (arg) -#else -#define PACKETDEBUG(arg...) -#define vdbg(arg...) -#endif - -#define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <duncan.sands@free.fr>" -#define DRIVER_VERSION "1.8" -#define DRIVER_DESC "Generic USB ATM/DSL I/O, version " DRIVER_VERSION - -static unsigned int num_rcv_urbs = UDSL_DEFAULT_RCV_URBS; -static unsigned int num_snd_urbs = UDSL_DEFAULT_SND_URBS; -static unsigned int num_rcv_bufs = UDSL_DEFAULT_RCV_BUFS; -static unsigned int num_snd_bufs = UDSL_DEFAULT_SND_BUFS; -static unsigned int rcv_buf_size = UDSL_DEFAULT_RCV_BUF_SIZE; -static unsigned int snd_buf_size = UDSL_DEFAULT_SND_BUF_SIZE; - -module_param(num_rcv_urbs, uint, 0444); -MODULE_PARM_DESC(num_rcv_urbs, - "Number of urbs used for reception (range: 0-" - __MODULE_STRING(UDSL_MAX_RCV_URBS) ", default: " - __MODULE_STRING(UDSL_DEFAULT_RCV_URBS) ")"); - -module_param(num_snd_urbs, uint, 0444); -MODULE_PARM_DESC(num_snd_urbs, - "Number of urbs used for transmission (range: 0-" - __MODULE_STRING(UDSL_MAX_SND_URBS) ", default: " - __MODULE_STRING(UDSL_DEFAULT_SND_URBS) ")"); - -module_param(num_rcv_bufs, uint, 0444); -MODULE_PARM_DESC(num_rcv_bufs, - "Number of buffers used for reception (range: 0-" - __MODULE_STRING(UDSL_MAX_RCV_BUFS) ", default: " - __MODULE_STRING(UDSL_DEFAULT_RCV_BUFS) ")"); - -module_param(num_snd_bufs, uint, 0444); -MODULE_PARM_DESC(num_snd_bufs, - "Number of buffers used for transmission (range: 0-" - __MODULE_STRING(UDSL_MAX_SND_BUFS) ", default: " - __MODULE_STRING(UDSL_DEFAULT_SND_BUFS) ")"); - -module_param(rcv_buf_size, uint, 0444); -MODULE_PARM_DESC(rcv_buf_size, - "Size of the buffers used for reception (range: 0-" - __MODULE_STRING(UDSL_MAX_RCV_BUF_SIZE) ", default: " - __MODULE_STRING(UDSL_DEFAULT_RCV_BUF_SIZE) ")"); - -module_param(snd_buf_size, uint, 0444); -MODULE_PARM_DESC(snd_buf_size, - "Size of the buffers used for transmission (range: 0-" - __MODULE_STRING(UDSL_MAX_SND_BUF_SIZE) ", default: " - __MODULE_STRING(UDSL_DEFAULT_SND_BUF_SIZE) ")"); - -/* ATM */ - -static void udsl_atm_dev_close(struct atm_dev *dev); -static int udsl_atm_open(struct atm_vcc *vcc); -static void udsl_atm_close(struct atm_vcc *vcc); -static int udsl_atm_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg); -static int udsl_atm_send(struct atm_vcc *vcc, struct sk_buff *skb); -static int udsl_atm_proc_read(struct atm_dev *atm_dev, loff_t * pos, char *page); - -static struct atmdev_ops udsl_atm_devops = { - .dev_close = udsl_atm_dev_close, - .open = udsl_atm_open, - .close = udsl_atm_close, - .ioctl = udsl_atm_ioctl, - .send = udsl_atm_send, - .proc_read = udsl_atm_proc_read, - .owner = THIS_MODULE, -}; - -/*********** -** misc ** -***********/ - -static inline void udsl_pop(struct atm_vcc *vcc, struct sk_buff *skb) -{ - if (vcc->pop) - vcc->pop(vcc, skb); - else - dev_kfree_skb(skb); -} - -/************* -** decode ** -*************/ - -static inline struct udsl_vcc_data *udsl_find_vcc(struct udsl_instance_data *instance, - short vpi, int vci) -{ - struct udsl_vcc_data *vcc; - - list_for_each_entry(vcc, &instance->vcc_list, list) - if ((vcc->vci == vci) && (vcc->vpi == vpi)) - return vcc; - return NULL; -} - -static void udsl_extract_cells(struct udsl_instance_data *instance, - unsigned char *source, unsigned int howmany) -{ - struct udsl_vcc_data *cached_vcc = NULL; - struct atm_vcc *vcc; - struct sk_buff *sarb; - struct udsl_vcc_data *vcc_data; - int cached_vci = 0; - unsigned int i; - int pti; - int vci; - short cached_vpi = 0; - short vpi; - - for (i = 0; i < howmany; - i++, source += ATM_CELL_SIZE + instance->rcv_padding) { - vpi = ((source[0] & 0x0f) << 4) | (source[1] >> 4); - vci = ((source[1] & 0x0f) << 12) | (source[2] << 4) | (source[3] >> 4); - pti = (source[3] & 0x2) != 0; - - vdbg("udsl_extract_cells: vpi %hd, vci %d, pti %d", vpi, vci, pti); - - if (cached_vcc && (vci == cached_vci) && (vpi == cached_vpi)) - vcc_data = cached_vcc; - else if ((vcc_data = udsl_find_vcc(instance, vpi, vci))) { - cached_vcc = vcc_data; - cached_vpi = vpi; - cached_vci = vci; - } else { - dbg("udsl_extract_cells: unknown vpi/vci (%hd/%d)!", vpi, vci); - continue; - } - - vcc = vcc_data->vcc; - sarb = vcc_data->sarb; - - if (sarb->tail + ATM_CELL_PAYLOAD > sarb->end) { - dbg("udsl_extract_cells: buffer overrun (sarb->len %u, vcc: 0x%p)!", sarb->len, vcc); - /* discard cells already received */ - skb_trim(sarb, 0); - } - - memcpy(sarb->tail, source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD); - __skb_put(sarb, ATM_CELL_PAYLOAD); - - if (pti) { - struct sk_buff *skb; - unsigned int length; - unsigned int pdu_length; - - length = (source[ATM_CELL_SIZE - 6] << 8) + source[ATM_CELL_SIZE - 5]; - - /* guard against overflow */ - if (length > ATM_MAX_AAL5_PDU) { - dbg("udsl_extract_cells: bogus length %u (vcc: 0x%p)!", length, vcc); - atomic_inc(&vcc->stats->rx_err); - goto out; - } - - pdu_length = UDSL_NUM_CELLS(length) * ATM_CELL_PAYLOAD; - - if (sarb->len < pdu_length) { - dbg("udsl_extract_cells: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!", pdu_length, sarb->len, vcc); - atomic_inc(&vcc->stats->rx_err); - goto out; - } - - if (crc32_be(~0, sarb->tail - pdu_length, pdu_length) != 0xc704dd7b) { - dbg("udsl_extract_cells: packet failed crc check (vcc: 0x%p)!", vcc); - atomic_inc(&vcc->stats->rx_err); - goto out; - } - - vdbg("udsl_extract_cells: got packet (length: %u, pdu_length: %u, vcc: 0x%p)", length, pdu_length, vcc); - - if (!(skb = dev_alloc_skb(length))) { - dbg("udsl_extract_cells: no memory for skb (length: %u)!", length); - atomic_inc(&vcc->stats->rx_drop); - goto out; - } - - vdbg("udsl_extract_cells: allocated new sk_buff (skb: 0x%p, skb->truesize: %u)", skb, skb->truesize); - - if (!atm_charge(vcc, skb->truesize)) { - dbg("udsl_extract_cells: failed atm_charge (skb->truesize: %u)!", skb->truesize); - dev_kfree_skb(skb); - goto out; /* atm_charge increments rx_drop */ - } - - memcpy(skb->data, sarb->tail - pdu_length, length); - __skb_put(skb, length); - - vdbg("udsl_extract_cells: sending skb 0x%p, skb->len %u, skb->truesize %u", skb, skb->len, skb->truesize); - - PACKETDEBUG(skb->data, skb->len); - - vcc->push(vcc, skb); - - atomic_inc(&vcc->stats->rx); - out: - skb_trim(sarb, 0); - } - } -} - -/************* -** encode ** -*************/ - -static inline void udsl_fill_cell_header(unsigned char *target, struct atm_vcc *vcc) -{ - target[0] = vcc->vpi >> 4; - target[1] = (vcc->vpi << 4) | (vcc->vci >> 12); - target[2] = vcc->vci >> 4; - target[3] = vcc->vci << 4; - target[4] = 0xec; -} - -static const unsigned char zeros[ATM_CELL_PAYLOAD]; - -static void udsl_groom_skb(struct atm_vcc *vcc, struct sk_buff *skb) -{ - struct udsl_control *ctrl = UDSL_SKB(skb); - unsigned int zero_padding; - u32 crc; - - ctrl->atm_data.vcc = vcc; - - ctrl->num_cells = UDSL_NUM_CELLS(skb->len); - ctrl->num_entire = skb->len / ATM_CELL_PAYLOAD; - - zero_padding = ctrl->num_cells * ATM_CELL_PAYLOAD - skb->len - ATM_AAL5_TRAILER; - - if (ctrl->num_entire + 1 < ctrl->num_cells) - ctrl->pdu_padding = zero_padding - (ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER); - else - ctrl->pdu_padding = zero_padding; - - ctrl->aal5_trailer[0] = 0; /* UU = 0 */ - ctrl->aal5_trailer[1] = 0; /* CPI = 0 */ - ctrl->aal5_trailer[2] = skb->len >> 8; - ctrl->aal5_trailer[3] = skb->len; - - crc = crc32_be(~0, skb->data, skb->len); - crc = crc32_be(crc, zeros, zero_padding); - crc = crc32_be(crc, ctrl->aal5_trailer, 4); - crc = ~crc; - - ctrl->aal5_trailer[4] = crc >> 24; - ctrl->aal5_trailer[5] = crc >> 16; - ctrl->aal5_trailer[6] = crc >> 8; - ctrl->aal5_trailer[7] = crc; -} - -static unsigned int udsl_write_cells(struct udsl_instance_data *instance, - unsigned int howmany, struct sk_buff *skb, - unsigned char **target_p) -{ - struct udsl_control *ctrl = UDSL_SKB(skb); - unsigned char *target = *target_p; - unsigned int nc, ne, i; - - vdbg("udsl_write_cells: howmany=%u, skb->len=%d, num_cells=%u, num_entire=%u, pdu_padding=%u", howmany, skb->len, ctrl->num_cells, ctrl->num_entire, ctrl->pdu_padding); - - nc = ctrl->num_cells; - ne = min(howmany, ctrl->num_entire); - - for (i = 0; i < ne; i++) { - udsl_fill_cell_header(target, ctrl->atm_data.vcc); - target += ATM_CELL_HEADER; - memcpy(target, skb->data, ATM_CELL_PAYLOAD); - target += ATM_CELL_PAYLOAD; - if (instance->snd_padding) { - memset(target, 0, instance->snd_padding); - target += instance->snd_padding; - } - __skb_pull(skb, ATM_CELL_PAYLOAD); - } - - ctrl->num_entire -= ne; - - if (!(ctrl->num_cells -= ne) || !(howmany -= ne)) - goto out; - - udsl_fill_cell_header(target, ctrl->atm_data.vcc); - target += ATM_CELL_HEADER; - memcpy(target, skb->data, skb->len); - target += skb->len; - __skb_pull(skb, skb->len); - memset(target, 0, ctrl->pdu_padding); - target += ctrl->pdu_padding; - - if (--ctrl->num_cells) { - if (!--howmany) { - ctrl->pdu_padding = ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER; - goto out; - } - - if (instance->snd_padding) { - memset(target, 0, instance->snd_padding); - target += instance->snd_padding; - } - udsl_fill_cell_header(target, ctrl->atm_data.vcc); - target += ATM_CELL_HEADER; - memset(target, 0, ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER); - target += ATM_CELL_PAYLOAD - ATM_AAL5_TRAILER; - - --ctrl->num_cells; - UDSL_ASSERT(!ctrl->num_cells); - } - - memcpy(target, ctrl->aal5_trailer, ATM_AAL5_TRAILER); - target += ATM_AAL5_TRAILER; - /* set pti bit in last cell */ - *(target + 3 - ATM_CELL_SIZE) |= 0x2; - if (instance->snd_padding) { - memset(target, 0, instance->snd_padding); - target += instance->snd_padding; - } - out: - *target_p = target; - return nc - ctrl->num_cells; -} - -/************** -** receive ** -**************/ - -static void udsl_complete_receive(struct urb *urb, struct pt_regs *regs) -{ - struct udsl_receive_buffer *buf; - struct udsl_instance_data *instance; - struct udsl_receiver *rcv; - unsigned long flags; - - if (!urb || !(rcv = urb->context)) { - dbg("udsl_complete_receive: bad urb!"); - return; - } - - instance = rcv->instance; - buf = rcv->buffer; - - buf->filled_cells = urb->actual_length / (ATM_CELL_SIZE + instance->rcv_padding); - - vdbg("udsl_complete_receive: urb 0x%p, status %d, actual_length %d, filled_cells %u, rcv 0x%p, buf 0x%p", urb, urb->status, urb->actual_length, buf->filled_cells, rcv, buf); - - UDSL_ASSERT(buf->filled_cells <= rcv_buf_size); - - /* may not be in_interrupt() */ - spin_lock_irqsave(&instance->receive_lock, flags); - list_add(&rcv->list, &instance->spare_receivers); - list_add_tail(&buf->list, &instance->filled_receive_buffers); - if (likely(!urb->status)) - tasklet_schedule(&instance->receive_tasklet); - spin_unlock_irqrestore(&instance->receive_lock, flags); -} - -static void udsl_process_receive(unsigned long data) -{ - struct udsl_receive_buffer *buf; - struct udsl_instance_data *instance = (struct udsl_instance_data *)data; - struct udsl_receiver *rcv; - int err; - - made_progress: - while (!list_empty(&instance->spare_receive_buffers)) { - spin_lock_irq(&instance->receive_lock); - if (list_empty(&instance->spare_receivers)) { - spin_unlock_irq(&instance->receive_lock); - break; - } - rcv = list_entry(instance->spare_receivers.next, - struct udsl_receiver, list); - list_del(&rcv->list); - spin_unlock_irq(&instance->receive_lock); - - buf = list_entry(instance->spare_receive_buffers.next, - struct udsl_receive_buffer, list); - list_del(&buf->list); - - rcv->buffer = buf; - - usb_fill_bulk_urb(rcv->urb, instance->usb_dev, - usb_rcvbulkpipe(instance->usb_dev, instance->data_endpoint), - buf->base, - rcv_buf_size * (ATM_CELL_SIZE + instance->rcv_padding), - udsl_complete_receive, rcv); - - vdbg("udsl_process_receive: sending urb 0x%p, rcv 0x%p, buf 0x%p", - rcv->urb, rcv, buf); - - if ((err = usb_submit_urb(rcv->urb, GFP_ATOMIC)) < 0) { - dbg("udsl_process_receive: urb submission failed (%d)!", err); - list_add(&buf->list, &instance->spare_receive_buffers); - spin_lock_irq(&instance->receive_lock); - list_add(&rcv->list, &instance->spare_receivers); - spin_unlock_irq(&instance->receive_lock); - break; - } - } - - spin_lock_irq(&instance->receive_lock); - if (list_empty(&instance->filled_receive_buffers)) { - spin_unlock_irq(&instance->receive_lock); - return; /* done - no more buffers */ - } - buf = list_entry(instance->filled_receive_buffers.next, - struct udsl_receive_buffer, list); - list_del(&buf->list); - spin_unlock_irq(&instance->receive_lock); - - vdbg("udsl_process_receive: processing buf 0x%p", buf); - udsl_extract_cells(instance, buf->base, buf->filled_cells); - list_add(&buf->list, &instance->spare_receive_buffers); - goto made_progress; -} - -/*********** -** send ** -***********/ - -static void udsl_complete_send(struct urb *urb, struct pt_regs *regs) -{ - struct udsl_instance_data *instance; - struct udsl_sender *snd; - unsigned long flags; - - if (!urb || !(snd = urb->context) || !(instance = snd->instance)) { - dbg("udsl_complete_send: bad urb!"); - return; - } - - vdbg("udsl_complete_send: urb 0x%p, status %d, snd 0x%p, buf 0x%p", urb, - urb->status, snd, snd->buffer); - - /* may not be in_interrupt() */ - spin_lock_irqsave(&instance->send_lock, flags); - list_add(&snd->list, &instance->spare_senders); - list_add(&snd->buffer->list, &instance->spare_send_buffers); - tasklet_schedule(&instance->send_tasklet); - spin_unlock_irqrestore(&instance->send_lock, flags); -} - -static void udsl_process_send(unsigned long data) -{ - struct udsl_send_buffer *buf; - struct udsl_instance_data *instance = (struct udsl_instance_data *)data; - struct sk_buff *skb; - struct udsl_sender *snd; - int err; - unsigned int num_written; - - made_progress: - spin_lock_irq(&instance->send_lock); - while (!list_empty(&instance->spare_senders)) { - if (!list_empty(&instance->filled_send_buffers)) { - buf = list_entry(instance->filled_send_buffers.next, - struct udsl_send_buffer, list); - list_del(&buf->list); - } else if ((buf = instance->current_buffer)) { - instance->current_buffer = NULL; - } else /* all buffers empty */ - break; - - snd = list_entry(instance->spare_senders.next, - struct udsl_sender, list); - list_del(&snd->list); - spin_unlock_irq(&instance->send_lock); - - snd->buffer = buf; - usb_fill_bulk_urb(snd->urb, instance->usb_dev, - usb_sndbulkpipe(instance->usb_dev, instance->data_endpoint), - buf->base, - (snd_buf_size - buf->free_cells) * (ATM_CELL_SIZE + instance->snd_padding), - udsl_complete_send, snd); - - vdbg("udsl_process_send: submitting urb 0x%p (%d cells), snd 0x%p, buf 0x%p", - snd->urb, snd_buf_size - buf->free_cells, snd, buf); - - if ((err = usb_submit_urb(snd->urb, GFP_ATOMIC)) < 0) { - dbg("udsl_process_send: urb submission failed (%d)!", err); - spin_lock_irq(&instance->send_lock); - list_add(&snd->list, &instance->spare_senders); - spin_unlock_irq(&instance->send_lock); - list_add(&buf->list, &instance->filled_send_buffers); - return; /* bail out */ - } - - spin_lock_irq(&instance->send_lock); - } /* while */ - spin_unlock_irq(&instance->send_lock); - - if (!instance->current_skb) - instance->current_skb = skb_dequeue(&instance->sndqueue); - if (!instance->current_skb) - return; /* done - no more skbs */ - - skb = instance->current_skb; - - if (!(buf = instance->current_buffer)) { - spin_lock_irq(&instance->send_lock); - if (list_empty(&instance->spare_send_buffers)) { - instance->current_buffer = NULL; - spin_unlock_irq(&instance->send_lock); - return; /* done - no more buffers */ - } - buf = list_entry(instance->spare_send_buffers.next, - struct udsl_send_buffer, list); - list_del(&buf->list); - spin_unlock_irq(&instance->send_lock); - - buf->free_start = buf->base; - buf->free_cells = snd_buf_size; - - instance->current_buffer = buf; - } - - num_written = udsl_write_cells(instance, buf->free_cells, skb, &buf->free_start); - - vdbg("udsl_process_send: wrote %u cells from skb 0x%p to buffer 0x%p", - num_written, skb, buf); - - if (!(buf->free_cells -= num_written)) { - list_add_tail(&buf->list, &instance->filled_send_buffers); - instance->current_buffer = NULL; - } - - vdbg("udsl_process_send: buffer contains %d cells, %d left", - snd_buf_size - buf->free_cells, buf->free_cells); - - if (!UDSL_SKB(skb)->num_cells) { - struct atm_vcc *vcc = UDSL_SKB(skb)->atm_data.vcc; - - udsl_pop(vcc, skb); - instance->current_skb = NULL; - - atomic_inc(&vcc->stats->tx); - } - - goto made_progress; -} - -static void udsl_cancel_send(struct udsl_instance_data *instance, - struct atm_vcc *vcc) -{ - struct sk_buff *skb, *n; - - dbg("udsl_cancel_send entered"); - spin_lock_irq(&instance->sndqueue.lock); - for (skb = instance->sndqueue.next, n = skb->next; - skb != (struct sk_buff *)&instance->sndqueue; - skb = n, n = skb->next) - if (UDSL_SKB(skb)->atm_data.vcc == vcc) { - dbg("udsl_cancel_send: popping skb 0x%p", skb); - __skb_unlink(skb, &instance->sndqueue); - udsl_pop(vcc, skb); - } - spin_unlock_irq(&instance->sndqueue.lock); - - tasklet_disable(&instance->send_tasklet); - if ((skb = instance->current_skb) && (UDSL_SKB(skb)->atm_data.vcc == vcc)) { - dbg("udsl_cancel_send: popping current skb (0x%p)", skb); - instance->current_skb = NULL; - udsl_pop(vcc, skb); - } - tasklet_enable(&instance->send_tasklet); - dbg("udsl_cancel_send done"); -} - -static int udsl_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) -{ - struct udsl_instance_data *instance = vcc->dev->dev_data; - int err; - - vdbg("udsl_atm_send called (skb 0x%p, len %u)", skb, skb->len); - - if (!instance) { - dbg("udsl_atm_send: NULL data!"); - err = -ENODEV; - goto fail; - } - - if (vcc->qos.aal != ATM_AAL5) { - dbg("udsl_atm_send: unsupported ATM type %d!", vcc->qos.aal); - err = -EINVAL; - goto fail; - } - - if (skb->len > ATM_MAX_AAL5_PDU) { - dbg("udsl_atm_send: packet too long (%d vs %d)!", skb->len, - ATM_MAX_AAL5_PDU); - err = -EINVAL; - goto fail; - } - - PACKETDEBUG(skb->data, skb->len); - - udsl_groom_skb(vcc, skb); - skb_queue_tail(&instance->sndqueue, skb); - tasklet_schedule(&instance->send_tasklet); - - return 0; - - fail: - udsl_pop(vcc, skb); - return err; -} - -/******************** -** bean counting ** -********************/ - -static void udsl_destroy_instance(struct kref *kref) -{ - struct udsl_instance_data *instance = - container_of(kref, struct udsl_instance_data, refcount); - - tasklet_kill(&instance->receive_tasklet); - tasklet_kill(&instance->send_tasklet); - usb_put_dev(instance->usb_dev); - kfree(instance); -} - -void udsl_get_instance(struct udsl_instance_data *instance) -{ - kref_get(&instance->refcount); -} - -void udsl_put_instance(struct udsl_instance_data *instance) -{ - kref_put(&instance->refcount, udsl_destroy_instance); -} - -/********** -** ATM ** -**********/ - -static void udsl_atm_dev_close(struct atm_dev *dev) -{ - struct udsl_instance_data *instance = dev->dev_data; - - dev->dev_data = NULL; - udsl_put_instance(instance); -} - -static int udsl_atm_proc_read(struct atm_dev *atm_dev, loff_t * pos, char *page) -{ - struct udsl_instance_data *instance = atm_dev->dev_data; - int left = *pos; - - if (!instance) { - dbg("udsl_atm_proc_read: NULL instance!"); - return -ENODEV; - } - - if (!left--) - return sprintf(page, "%s\n", instance->description); - - if (!left--) - return sprintf(page, "MAC: %02x:%02x:%02x:%02x:%02x:%02x\n", - atm_dev->esi[0], atm_dev->esi[1], - atm_dev->esi[2], atm_dev->esi[3], - atm_dev->esi[4], atm_dev->esi[5]); - - if (!left--) - return sprintf(page, - "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop )\n", - atomic_read(&atm_dev->stats.aal5.tx), - atomic_read(&atm_dev->stats.aal5.tx_err), - atomic_read(&atm_dev->stats.aal5.rx), - atomic_read(&atm_dev->stats.aal5.rx_err), - atomic_read(&atm_dev->stats.aal5.rx_drop)); - - if (!left--) { - switch (atm_dev->signal) { - case ATM_PHY_SIG_FOUND: - sprintf(page, "Line up"); - break; - case ATM_PHY_SIG_LOST: - sprintf(page, "Line down"); - break; - default: - sprintf(page, "Line state unknown"); - break; - } - - if (instance->usb_dev->state == USB_STATE_NOTATTACHED) - strcat(page, ", disconnected\n"); - else { - if (instance->status == UDSL_LOADED_FIRMWARE) - strcat(page, ", firmware loaded\n"); - else if (instance->status == UDSL_LOADING_FIRMWARE) - strcat(page, ", firmware loading\n"); - else - strcat(page, ", no firmware\n"); - } - - return strlen(page); - } - - return 0; -} - -static int udsl_atm_open(struct atm_vcc *vcc) -{ - struct udsl_instance_data *instance = vcc->dev->dev_data; - struct udsl_vcc_data *new; - unsigned int max_pdu; - int vci = vcc->vci; - short vpi = vcc->vpi; - int err; - - dbg("udsl_atm_open: vpi %hd, vci %d", vpi, vci); - - if (!instance) { - dbg("udsl_atm_open: NULL data!"); - return -ENODEV; - } - - /* only support AAL5 */ - if ((vcc->qos.aal != ATM_AAL5) || (vcc->qos.rxtp.max_sdu < 0) - || (vcc->qos.rxtp.max_sdu > ATM_MAX_AAL5_PDU)) { - dbg("udsl_atm_open: unsupported ATM type %d!", vcc->qos.aal); - return -EINVAL; - } - - if (instance->firmware_wait && - (err = instance->firmware_wait(instance)) < 0) { - dbg("udsl_atm_open: firmware not loaded (%d)!", err); - return err; - } - - down(&instance->serialize); /* vs self, udsl_atm_close */ - - if (udsl_find_vcc(instance, vpi, vci)) { - dbg("udsl_atm_open: %hd/%d already in use!", vpi, vci); - up(&instance->serialize); - return -EADDRINUSE; - } - - if (!(new = kmalloc(sizeof(struct udsl_vcc_data), GFP_KERNEL))) { - dbg("udsl_atm_open: no memory for vcc_data!"); - up(&instance->serialize); - return -ENOMEM; - } - - memset(new, 0, sizeof(struct udsl_vcc_data)); - new->vcc = vcc; - new->vpi = vpi; - new->vci = vci; - - /* udsl_extract_cells requires at least one cell */ - max_pdu = max(1, UDSL_NUM_CELLS(vcc->qos.rxtp.max_sdu)) * ATM_CELL_PAYLOAD; - if (!(new->sarb = alloc_skb(max_pdu, GFP_KERNEL))) { - dbg("udsl_atm_open: no memory for SAR buffer!"); - kfree(new); - up(&instance->serialize); - return -ENOMEM; - } - - vcc->dev_data = new; - - tasklet_disable(&instance->receive_tasklet); - list_add(&new->list, &instance->vcc_list); - tasklet_enable(&instance->receive_tasklet); - - set_bit(ATM_VF_ADDR, &vcc->flags); - set_bit(ATM_VF_PARTIAL, &vcc->flags); - set_bit(ATM_VF_READY, &vcc->flags); - - up(&instance->serialize); - - tasklet_schedule(&instance->receive_tasklet); - - dbg("udsl_atm_open: allocated vcc data 0x%p (max_pdu: %u)", new, max_pdu); - - return 0; -} - -static void udsl_atm_close(struct atm_vcc *vcc) -{ - struct udsl_instance_data *instance = vcc->dev->dev_data; - struct udsl_vcc_data *vcc_data = vcc->dev_data; - - dbg("udsl_atm_close called"); - - if (!instance || !vcc_data) { - dbg("udsl_atm_close: NULL data!"); - return; - } - - dbg("udsl_atm_close: deallocating vcc 0x%p with vpi %d vci %d", - vcc_data, vcc_data->vpi, vcc_data->vci); - - udsl_cancel_send(instance, vcc); - - down(&instance->serialize); /* vs self, udsl_atm_open */ - - tasklet_disable(&instance->receive_tasklet); - list_del(&vcc_data->list); - tasklet_enable(&instance->receive_tasklet); - - kfree_skb(vcc_data->sarb); - vcc_data->sarb = NULL; - - kfree(vcc_data); - vcc->dev_data = NULL; - - vcc->vpi = ATM_VPI_UNSPEC; - vcc->vci = ATM_VCI_UNSPEC; - clear_bit(ATM_VF_READY, &vcc->flags); - clear_bit(ATM_VF_PARTIAL, &vcc->flags); - clear_bit(ATM_VF_ADDR, &vcc->flags); - - up(&instance->serialize); - - dbg("udsl_atm_close successful"); -} - -static int udsl_atm_ioctl(struct atm_dev *dev, unsigned int cmd, - void __user * arg) -{ - switch (cmd) { - case ATM_QUERYLOOP: - return put_user(ATM_LM_NONE, (int __user *)arg) ? -EFAULT : 0; - default: - return -ENOIOCTLCMD; - } -} - -/********** -** USB ** -**********/ - -int udsl_instance_setup(struct usb_device *dev, - struct udsl_instance_data *instance) -{ - char *buf; - int i, length; - - kref_init(&instance->refcount); /* one for USB */ - udsl_get_instance(instance); /* one for ATM */ - - init_MUTEX(&instance->serialize); - - instance->usb_dev = dev; - - INIT_LIST_HEAD(&instance->vcc_list); - - instance->status = UDSL_NO_FIRMWARE; - init_waitqueue_head(&instance->firmware_waiters); - - spin_lock_init(&instance->receive_lock); - INIT_LIST_HEAD(&instance->spare_receivers); - INIT_LIST_HEAD(&instance->filled_receive_buffers); - - tasklet_init(&instance->receive_tasklet, udsl_process_receive, (unsigned long)instance); - INIT_LIST_HEAD(&instance->spare_receive_buffers); - - skb_queue_head_init(&instance->sndqueue); - - spin_lock_init(&instance->send_lock); - INIT_LIST_HEAD(&instance->spare_senders); - INIT_LIST_HEAD(&instance->spare_send_buffers); - - tasklet_init(&instance->send_tasklet, udsl_process_send, - (unsigned long)instance); - INIT_LIST_HEAD(&instance->filled_send_buffers); - - /* receive init */ - for (i = 0; i < num_rcv_urbs; i++) { - struct udsl_receiver *rcv = &(instance->receivers[i]); - - if (!(rcv->urb = usb_alloc_urb(0, GFP_KERNEL))) { - dbg("udsl_usb_probe: no memory for receive urb %d!", i); - goto fail; - } - - rcv->instance = instance; - - list_add(&rcv->list, &instance->spare_receivers); - } - - for (i = 0; i < num_rcv_bufs; i++) { - struct udsl_receive_buffer *buf = - &(instance->receive_buffers[i]); - - buf->base = kmalloc(rcv_buf_size * (ATM_CELL_SIZE + instance->rcv_padding), - GFP_KERNEL); - if (!buf->base) { - dbg("udsl_usb_probe: no memory for receive buffer %d!", i); - goto fail; - } - - list_add(&buf->list, &instance->spare_receive_buffers); - } - - /* send init */ - for (i = 0; i < num_snd_urbs; i++) { - struct udsl_sender *snd = &(instance->senders[i]); - - if (!(snd->urb = usb_alloc_urb(0, GFP_KERNEL))) { - dbg("udsl_usb_probe: no memory for send urb %d!", i); - goto fail; - } - - snd->instance = instance; - - list_add(&snd->list, &instance->spare_senders); - } - - for (i = 0; i < num_snd_bufs; i++) { - struct udsl_send_buffer *buf = &(instance->send_buffers[i]); - - buf->base = kmalloc(snd_buf_size * (ATM_CELL_SIZE + instance->snd_padding), - GFP_KERNEL); - if (!buf->base) { - dbg("udsl_usb_probe: no memory for send buffer %d!", i); - goto fail; - } - - list_add(&buf->list, &instance->spare_send_buffers); - } - - /* ATM init */ - instance->atm_dev = atm_dev_register(instance->driver_name, - &udsl_atm_devops, -1, NULL); - if (!instance->atm_dev) { - dbg("udsl_usb_probe: failed to register ATM device!"); - goto fail; - } - - instance->atm_dev->ci_range.vpi_bits = ATM_CI_MAX; - instance->atm_dev->ci_range.vci_bits = ATM_CI_MAX; - instance->atm_dev->signal = ATM_PHY_SIG_UNKNOWN; - - /* temp init ATM device, set to 128kbit */ - instance->atm_dev->link_rate = 128 * 1000 / 424; - - /* device description */ - buf = instance->description; - length = sizeof(instance->description); - - if ((i = usb_string(dev, dev->descriptor.iProduct, buf, length)) < 0) - goto finish; - - buf += i; - length -= i; - - i = scnprintf(buf, length, " ("); - buf += i; - length -= i; - - if (length <= 0 || (i = usb_make_path(dev, buf, length)) < 0) - goto finish; - - buf += i; - length -= i; - - snprintf(buf, length, ")"); - - finish: - /* ready for ATM callbacks */ - wmb(); - instance->atm_dev->dev_data = instance; - - usb_get_dev(dev); - - return 0; - - fail: - for (i = 0; i < num_snd_bufs; i++) - kfree(instance->send_buffers[i].base); - - for (i = 0; i < num_snd_urbs; i++) - usb_free_urb(instance->senders[i].urb); - - for (i = 0; i < num_rcv_bufs; i++) - kfree(instance->receive_buffers[i].base); - - for (i = 0; i < num_rcv_urbs; i++) - usb_free_urb(instance->receivers[i].urb); - - return -ENOMEM; -} - -void udsl_instance_disconnect(struct udsl_instance_data *instance) -{ - int i; - - dbg("udsl_instance_disconnect entered"); - - if (!instance) { - dbg("udsl_instance_disconnect: NULL instance!"); - return; - } - - /* receive finalize */ - tasklet_disable(&instance->receive_tasklet); - - for (i = 0; i < num_rcv_urbs; i++) - usb_kill_urb(instance->receivers[i].urb); - - /* no need to take the spinlock */ - INIT_LIST_HEAD(&instance->filled_receive_buffers); - INIT_LIST_HEAD(&instance->spare_receive_buffers); - - tasklet_enable(&instance->receive_tasklet); - - for (i = 0; i < num_rcv_urbs; i++) - usb_free_urb(instance->receivers[i].urb); - - for (i = 0; i < num_rcv_bufs; i++) - kfree(instance->receive_buffers[i].base); - - /* send finalize */ - tasklet_disable(&instance->send_tasklet); - - for (i = 0; i < num_snd_urbs; i++) - usb_kill_urb(instance->senders[i].urb); - - /* no need to take the spinlock */ - INIT_LIST_HEAD(&instance->spare_senders); - INIT_LIST_HEAD(&instance->spare_send_buffers); - instance->current_buffer = NULL; - - tasklet_enable(&instance->send_tasklet); - - for (i = 0; i < num_snd_urbs; i++) - usb_free_urb(instance->senders[i].urb); - - for (i = 0; i < num_snd_bufs; i++) - kfree(instance->send_buffers[i].base); - - /* ATM finalize */ - shutdown_atm_dev(instance->atm_dev); -} - -EXPORT_SYMBOL_GPL(udsl_get_instance); -EXPORT_SYMBOL_GPL(udsl_put_instance); -EXPORT_SYMBOL_GPL(udsl_instance_setup); -EXPORT_SYMBOL_GPL(udsl_instance_disconnect); - -/*********** -** init ** -***********/ - -static int __init udsl_usb_init(void) -{ - dbg("udsl_usb_init: driver version " DRIVER_VERSION); - - if (sizeof(struct udsl_control) > sizeof(((struct sk_buff *) 0)->cb)) { - printk(KERN_ERR __FILE__ ": unusable with this kernel!\n"); - return -EIO; - } - - if ((num_rcv_urbs > UDSL_MAX_RCV_URBS) - || (num_snd_urbs > UDSL_MAX_SND_URBS) - || (num_rcv_bufs > UDSL_MAX_RCV_BUFS) - || (num_snd_bufs > UDSL_MAX_SND_BUFS) - || (rcv_buf_size > UDSL_MAX_RCV_BUF_SIZE) - || (snd_buf_size > UDSL_MAX_SND_BUF_SIZE)) - return -EINVAL; - - return 0; -} - -static void __exit udsl_usb_exit(void) -{ -} - -module_init(udsl_usb_init); -module_exit(udsl_usb_exit); - -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_LICENSE("GPL"); -MODULE_VERSION(DRIVER_VERSION); - -/************ -** debug ** -************/ - -#ifdef VERBOSE_DEBUG -static int udsl_print_packet(const unsigned char *data, int len) -{ - unsigned char buffer[256]; - int i = 0, j = 0; - - for (i = 0; i < len;) { - buffer[0] = '\0'; - sprintf(buffer, "%.3d :", i); - for (j = 0; (j < 16) && (i < len); j++, i++) { - sprintf(buffer, "%s %2.2x", buffer, data[i]); - } - dbg("%s", buffer); - } - return i; -} -#endif diff --git a/drivers/usb/atm/usb_atm.h b/drivers/usb/atm/usb_atm.h deleted file mode 100644 index cf8c5328353..00000000000 --- a/drivers/usb/atm/usb_atm.h +++ /dev/null @@ -1,176 +0,0 @@ -/****************************************************************************** - * usb_atm.h - Generic USB xDSL driver core - * - * Copyright (C) 2001, Alcatel - * Copyright (C) 2003, Duncan Sands, SolNegro, Josep Comas - * Copyright (C) 2004, David Woodhouse - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 59 - * Temple Place - Suite 330, Boston, MA 02111-1307, USA. - * - ******************************************************************************/ - -#include <linux/config.h> -#include <linux/list.h> -#include <linux/kref.h> -#include <linux/atm.h> -#include <linux/atmdev.h> -#include <asm/semaphore.h> - -/* -#define DEBUG -#define VERBOSE_DEBUG -*/ - -#if !defined (DEBUG) && defined (CONFIG_USB_DEBUG) -# define DEBUG -#endif - -#include <linux/usb.h> - -#ifdef DEBUG -#define UDSL_ASSERT(x) BUG_ON(!(x)) -#else -#define UDSL_ASSERT(x) do { if (!(x)) warn("failed assertion '" #x "' at line %d", __LINE__); } while(0) -#endif - -#define UDSL_MAX_RCV_URBS 4 -#define UDSL_MAX_SND_URBS 4 -#define UDSL_MAX_RCV_BUFS 8 -#define UDSL_MAX_SND_BUFS 8 -#define UDSL_MAX_RCV_BUF_SIZE 1024 /* ATM cells */ -#define UDSL_MAX_SND_BUF_SIZE 1024 /* ATM cells */ -#define UDSL_DEFAULT_RCV_URBS 2 -#define UDSL_DEFAULT_SND_URBS 2 -#define UDSL_DEFAULT_RCV_BUFS 4 -#define UDSL_DEFAULT_SND_BUFS 4 -#define UDSL_DEFAULT_RCV_BUF_SIZE 64 /* ATM cells */ -#define UDSL_DEFAULT_SND_BUF_SIZE 64 /* ATM cells */ - -#define ATM_CELL_HEADER (ATM_CELL_SIZE - ATM_CELL_PAYLOAD) -#define UDSL_NUM_CELLS(x) (((x) + ATM_AAL5_TRAILER + ATM_CELL_PAYLOAD - 1) / ATM_CELL_PAYLOAD) - -/* receive */ - -struct udsl_receive_buffer { - struct list_head list; - unsigned char *base; - unsigned int filled_cells; -}; - -struct udsl_receiver { - struct list_head list; - struct udsl_receive_buffer *buffer; - struct urb *urb; - struct udsl_instance_data *instance; -}; - -struct udsl_vcc_data { - /* vpi/vci lookup */ - struct list_head list; - short vpi; - int vci; - struct atm_vcc *vcc; - - /* raw cell reassembly */ - struct sk_buff *sarb; -}; - -/* send */ - -struct udsl_send_buffer { - struct list_head list; - unsigned char *base; - unsigned char *free_start; - unsigned int free_cells; -}; - -struct udsl_sender { - struct list_head list; - struct udsl_send_buffer *buffer; - struct urb *urb; - struct udsl_instance_data *instance; -}; - -struct udsl_control { - struct atm_skb_data atm_data; - unsigned int num_cells; - unsigned int num_entire; - unsigned int pdu_padding; - unsigned char aal5_trailer[ATM_AAL5_TRAILER]; -}; - -#define UDSL_SKB(x) ((struct udsl_control *)(x)->cb) - -/* main driver data */ - -enum udsl_status { - UDSL_NO_FIRMWARE, - UDSL_LOADING_FIRMWARE, - UDSL_LOADED_FIRMWARE -}; - -struct udsl_instance_data { - struct kref refcount; - struct semaphore serialize; - - /* USB device part */ - struct usb_device *usb_dev; - char description[64]; - int data_endpoint; - int snd_padding; - int rcv_padding; - const char *driver_name; - - /* ATM device part */ - struct atm_dev *atm_dev; - struct list_head vcc_list; - - /* firmware */ - int (*firmware_wait) (struct udsl_instance_data *); - enum udsl_status status; - wait_queue_head_t firmware_waiters; - - /* receive */ - struct udsl_receiver receivers[UDSL_MAX_RCV_URBS]; - struct udsl_receive_buffer receive_buffers[UDSL_MAX_RCV_BUFS]; - - spinlock_t receive_lock; - struct list_head spare_receivers; - struct list_head filled_receive_buffers; - - struct tasklet_struct receive_tasklet; - struct list_head spare_receive_buffers; - - /* send */ - struct udsl_sender senders[UDSL_MAX_SND_URBS]; - struct udsl_send_buffer send_buffers[UDSL_MAX_SND_BUFS]; - - struct sk_buff_head sndqueue; - - spinlock_t send_lock; - struct list_head spare_senders; - struct list_head spare_send_buffers; - - struct tasklet_struct send_tasklet; - struct sk_buff *current_skb; /* being emptied */ - struct udsl_send_buffer *current_buffer; /* being filled */ - struct list_head filled_send_buffers; -}; - -extern int udsl_instance_setup(struct usb_device *dev, - struct udsl_instance_data *instance); -extern void udsl_instance_disconnect(struct udsl_instance_data *instance); -extern void udsl_get_instance(struct udsl_instance_data *instance); -extern void udsl_put_instance(struct udsl_instance_data *instance); diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c new file mode 100644 index 00000000000..dada0146cd7 --- /dev/null +++ b/drivers/usb/atm/usbatm.c @@ -0,0 +1,1344 @@ +/****************************************************************************** + * usbatm.c - Generic USB xDSL driver core + * + * Copyright (C) 2001, Alcatel + * Copyright (C) 2003, Duncan Sands, SolNegro, Josep Comas + * Copyright (C) 2004, David Woodhouse, Roman Kagan + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + ******************************************************************************/ + +/* + * Written by Johan Verrept, Duncan Sands (duncan.sands@free.fr) and David Woodhouse + * + * 1.7+: - See the check-in logs + * + * 1.6: - No longer opens a connection if the firmware is not loaded + * - Added support for the speedtouch 330 + * - Removed the limit on the number of devices + * - Module now autoloads on device plugin + * - Merged relevant parts of sarlib + * - Replaced the kernel thread with a tasklet + * - New packet transmission code + * - Changed proc file contents + * - Fixed all known SMP races + * - Many fixes and cleanups + * - Various fixes by Oliver Neukum (oliver@neukum.name) + * + * 1.5A: - Version for inclusion in 2.5 series kernel + * - Modifications by Richard Purdie (rpurdie@rpsys.net) + * - made compatible with kernel 2.5.6 onwards by changing + * usbatm_usb_send_data_context->urb to a pointer and adding code + * to alloc and free it + * - remove_wait_queue() added to usbatm_atm_processqueue_thread() + * + * 1.5: - fixed memory leak when atmsar_decode_aal5 returned NULL. + * (reported by stephen.robinson@zen.co.uk) + * + * 1.4: - changed the spin_lock() under interrupt to spin_lock_irqsave() + * - unlink all active send urbs of a vcc that is being closed. + * + * 1.3.1: - added the version number + * + * 1.3: - Added multiple send urb support + * - fixed memory leak and vcc->tx_inuse starvation bug + * when not enough memory left in vcc. + * + * 1.2: - Fixed race condition in usbatm_usb_send_data() + * 1.1: - Turned off packet debugging + * + */ + +#include "usbatm.h" + +#include <asm/uaccess.h> +#include <linux/crc32.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/netdevice.h> +#include <linux/proc_fs.h> +#include <linux/sched.h> +#include <linux/signal.h> +#include <linux/slab.h> +#include <linux/stat.h> +#include <linux/timer.h> +#include <linux/wait.h> +#include <linux/kthread.h> +#include <linux/ratelimit.h> + +#ifdef VERBOSE_DEBUG +static int usbatm_print_packet(struct usbatm_data *instance, const unsigned char *data, int len); +#define PACKETDEBUG(arg...) usbatm_print_packet(arg) +#define vdbg(arg...) dev_dbg(arg) +#else +#define PACKETDEBUG(arg...) +#define vdbg(arg...) +#endif + +#define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <duncan.sands@free.fr>" +#define DRIVER_VERSION "1.10" +#define DRIVER_DESC "Generic USB ATM/DSL I/O, version " DRIVER_VERSION + +static const char usbatm_driver_name[] = "usbatm"; + +#define UDSL_MAX_RCV_URBS 16 +#define UDSL_MAX_SND_URBS 16 +#define UDSL_MAX_BUF_SIZE 65536 +#define UDSL_DEFAULT_RCV_URBS 4 +#define UDSL_DEFAULT_SND_URBS 4 +#define UDSL_DEFAULT_RCV_BUF_SIZE 3392 /* 64 * ATM_CELL_SIZE */ +#define UDSL_DEFAULT_SND_BUF_SIZE 3392 /* 64 * ATM_CELL_SIZE */ + +#define ATM_CELL_HEADER (ATM_CELL_SIZE - ATM_CELL_PAYLOAD) + +#define THROTTLE_MSECS 100 /* delay to recover processing after urb submission fails */ + +static unsigned int num_rcv_urbs = UDSL_DEFAULT_RCV_URBS; +static unsigned int num_snd_urbs = UDSL_DEFAULT_SND_URBS; +static unsigned int rcv_buf_bytes = UDSL_DEFAULT_RCV_BUF_SIZE; +static unsigned int snd_buf_bytes = UDSL_DEFAULT_SND_BUF_SIZE; + +module_param(num_rcv_urbs, uint, S_IRUGO); +MODULE_PARM_DESC(num_rcv_urbs, + "Number of urbs used for reception (range: 0-" + __MODULE_STRING(UDSL_MAX_RCV_URBS) ", default: " + __MODULE_STRING(UDSL_DEFAULT_RCV_URBS) ")"); + +module_param(num_snd_urbs, uint, S_IRUGO); +MODULE_PARM_DESC(num_snd_urbs, + "Number of urbs used for transmission (range: 0-" + __MODULE_STRING(UDSL_MAX_SND_URBS) ", default: " + __MODULE_STRING(UDSL_DEFAULT_SND_URBS) ")"); + +module_param(rcv_buf_bytes, uint, S_IRUGO); +MODULE_PARM_DESC(rcv_buf_bytes, + "Size of the buffers used for reception, in bytes (range: 1-" + __MODULE_STRING(UDSL_MAX_BUF_SIZE) ", default: " + __MODULE_STRING(UDSL_DEFAULT_RCV_BUF_SIZE) ")"); + +module_param(snd_buf_bytes, uint, S_IRUGO); +MODULE_PARM_DESC(snd_buf_bytes, + "Size of the buffers used for transmission, in bytes (range: 1-" + __MODULE_STRING(UDSL_MAX_BUF_SIZE) ", default: " + __MODULE_STRING(UDSL_DEFAULT_SND_BUF_SIZE) ")"); + + +/* receive */ + +struct usbatm_vcc_data { + /* vpi/vci lookup */ + struct list_head list; + short vpi; + int vci; + struct atm_vcc *vcc; + + /* raw cell reassembly */ + struct sk_buff *sarb; +}; + + +/* send */ + +struct usbatm_control { + struct atm_skb_data atm; + u32 len; + u32 crc; +}; + +#define UDSL_SKB(x) ((struct usbatm_control *)(x)->cb) + + +/* ATM */ + +static void usbatm_atm_dev_close(struct atm_dev *atm_dev); +static int usbatm_atm_open(struct atm_vcc *vcc); +static void usbatm_atm_close(struct atm_vcc *vcc); +static int usbatm_atm_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __user *arg); +static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb); +static int usbatm_atm_proc_read(struct atm_dev *atm_dev, loff_t *pos, char *page); + +static struct atmdev_ops usbatm_atm_devops = { + .dev_close = usbatm_atm_dev_close, + .open = usbatm_atm_open, + .close = usbatm_atm_close, + .ioctl = usbatm_atm_ioctl, + .send = usbatm_atm_send, + .proc_read = usbatm_atm_proc_read, + .owner = THIS_MODULE, +}; + + +/*********** +** misc ** +***********/ + +static inline unsigned int usbatm_pdu_length(unsigned int length) +{ + length += ATM_CELL_PAYLOAD - 1 + ATM_AAL5_TRAILER; + return length - length % ATM_CELL_PAYLOAD; +} + +static inline void usbatm_pop(struct atm_vcc *vcc, struct sk_buff *skb) +{ + if (vcc->pop) + vcc->pop(vcc, skb); + else + dev_kfree_skb_any(skb); +} + + +/*********** +** urbs ** +************/ + +static struct urb *usbatm_pop_urb(struct usbatm_channel *channel) +{ + struct urb *urb; + + spin_lock_irq(&channel->lock); + if (list_empty(&channel->list)) { + spin_unlock_irq(&channel->lock); + return NULL; + } + + urb = list_entry(channel->list.next, struct urb, urb_list); + list_del(&urb->urb_list); + spin_unlock_irq(&channel->lock); + + return urb; +} + +static int usbatm_submit_urb(struct urb *urb) +{ + struct usbatm_channel *channel = urb->context; + int ret; + + /* vdbg("%s: submitting urb 0x%p, size %u", + __func__, urb, urb->transfer_buffer_length); */ + + ret = usb_submit_urb(urb, GFP_ATOMIC); + if (ret) { + if (printk_ratelimit()) + atm_warn(channel->usbatm, "%s: urb 0x%p submission failed (%d)!\n", + __func__, urb, ret); + + /* consider all errors transient and return the buffer back to the queue */ + urb->status = -EAGAIN; + spin_lock_irq(&channel->lock); + + /* must add to the front when sending; doesn't matter when receiving */ + list_add(&urb->urb_list, &channel->list); + + spin_unlock_irq(&channel->lock); + + /* make sure the channel doesn't stall */ + mod_timer(&channel->delay, jiffies + msecs_to_jiffies(THROTTLE_MSECS)); + } + + return ret; +} + +static void usbatm_complete(struct urb *urb) +{ + struct usbatm_channel *channel = urb->context; + unsigned long flags; + int status = urb->status; + + /* vdbg("%s: urb 0x%p, status %d, actual_length %d", + __func__, urb, status, urb->actual_length); */ + + /* usually in_interrupt(), but not always */ + spin_lock_irqsave(&channel->lock, flags); + + /* must add to the back when receiving; doesn't matter when sending */ + list_add_tail(&urb->urb_list, &channel->list); + + spin_unlock_irqrestore(&channel->lock, flags); + + if (unlikely(status) && + (!(channel->usbatm->flags & UDSL_IGNORE_EILSEQ) || + status != -EILSEQ)) { + if (status == -ESHUTDOWN) + return; + + if (printk_ratelimit()) + atm_warn(channel->usbatm, "%s: urb 0x%p failed (%d)!\n", + __func__, urb, status); + /* throttle processing in case of an error */ + mod_timer(&channel->delay, jiffies + msecs_to_jiffies(THROTTLE_MSECS)); + } else + tasklet_schedule(&channel->tasklet); +} + + +/************* +** decode ** +*************/ + +static inline struct usbatm_vcc_data *usbatm_find_vcc(struct usbatm_data *instance, + short vpi, int vci) +{ + struct usbatm_vcc_data *vcc_data; + + list_for_each_entry(vcc_data, &instance->vcc_list, list) + if ((vcc_data->vci == vci) && (vcc_data->vpi == vpi)) + return vcc_data; + return NULL; +} + +static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char *source) +{ + struct atm_vcc *vcc; + struct sk_buff *sarb; + short vpi = ((source[0] & 0x0f) << 4) | (source[1] >> 4); + int vci = ((source[1] & 0x0f) << 12) | (source[2] << 4) | (source[3] >> 4); + u8 pti = ((source[3] & 0xe) >> 1); + + if ((vci != instance->cached_vci) || (vpi != instance->cached_vpi)) { + instance->cached_vpi = vpi; + instance->cached_vci = vci; + + instance->cached_vcc = usbatm_find_vcc(instance, vpi, vci); + + if (!instance->cached_vcc) + atm_rldbg(instance, "%s: unknown vpi/vci (%hd/%d)!\n", __func__, vpi, vci); + } + + if (!instance->cached_vcc) + return; + + vcc = instance->cached_vcc->vcc; + + /* OAM F5 end-to-end */ + if (pti == ATM_PTI_E2EF5) { + if (printk_ratelimit()) + atm_warn(instance, "%s: OAM not supported (vpi %d, vci %d)!\n", + __func__, vpi, vci); + atomic_inc(&vcc->stats->rx_err); + return; + } + + sarb = instance->cached_vcc->sarb; + + if (sarb->tail + ATM_CELL_PAYLOAD > sarb->end) { + atm_rldbg(instance, "%s: buffer overrun (sarb->len %u, vcc: 0x%p)!\n", + __func__, sarb->len, vcc); + /* discard cells already received */ + skb_trim(sarb, 0); + } + + memcpy(skb_tail_pointer(sarb), source + ATM_CELL_HEADER, ATM_CELL_PAYLOAD); + __skb_put(sarb, ATM_CELL_PAYLOAD); + + if (pti & 1) { + struct sk_buff *skb; + unsigned int length; + unsigned int pdu_length; + + length = (source[ATM_CELL_SIZE - 6] << 8) + source[ATM_CELL_SIZE - 5]; + + /* guard against overflow */ + if (length > ATM_MAX_AAL5_PDU) { + atm_rldbg(instance, "%s: bogus length %u (vcc: 0x%p)!\n", + __func__, length, vcc); + atomic_inc(&vcc->stats->rx_err); + goto out; + } + + pdu_length = usbatm_pdu_length(length); + + if (sarb->len < pdu_length) { + atm_rldbg(instance, "%s: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!\n", + __func__, pdu_length, sarb->len, vcc); + atomic_inc(&vcc->stats->rx_err); + goto out; + } + + if (crc32_be(~0, skb_tail_pointer(sarb) - pdu_length, pdu_length) != 0xc704dd7b) { + atm_rldbg(instance, "%s: packet failed crc check (vcc: 0x%p)!\n", + __func__, vcc); + atomic_inc(&vcc->stats->rx_err); + goto out; + } + + vdbg(&instance->usb_intf->dev, + "%s: got packet (length: %u, pdu_length: %u, vcc: 0x%p)", + __func__, length, pdu_length, vcc); + + if (!(skb = dev_alloc_skb(length))) { + if (printk_ratelimit()) + atm_err(instance, "%s: no memory for skb (length: %u)!\n", + __func__, length); + atomic_inc(&vcc->stats->rx_drop); + goto out; + } + + vdbg(&instance->usb_intf->dev, + "%s: allocated new sk_buff (skb: 0x%p, skb->truesize: %u)", + __func__, skb, skb->truesize); + + if (!atm_charge(vcc, skb->truesize)) { + atm_rldbg(instance, "%s: failed atm_charge (skb->truesize: %u)!\n", + __func__, skb->truesize); + dev_kfree_skb_any(skb); + goto out; /* atm_charge increments rx_drop */ + } + + skb_copy_to_linear_data(skb, + skb_tail_pointer(sarb) - pdu_length, + length); + __skb_put(skb, length); + + vdbg(&instance->usb_intf->dev, + "%s: sending skb 0x%p, skb->len %u, skb->truesize %u", + __func__, skb, skb->len, skb->truesize); + + PACKETDEBUG(instance, skb->data, skb->len); + + vcc->push(vcc, skb); + + atomic_inc(&vcc->stats->rx); + out: + skb_trim(sarb, 0); + } +} + +static void usbatm_extract_cells(struct usbatm_data *instance, + unsigned char *source, unsigned int avail_data) +{ + unsigned int stride = instance->rx_channel.stride; + unsigned int buf_usage = instance->buf_usage; + + /* extract cells from incoming data, taking into account that + * the length of avail data may not be a multiple of stride */ + + if (buf_usage > 0) { + /* we have a partially received atm cell */ + unsigned char *cell_buf = instance->cell_buf; + unsigned int space_left = stride - buf_usage; + + if (avail_data >= space_left) { + /* add new data and process cell */ + memcpy(cell_buf + buf_usage, source, space_left); + source += space_left; + avail_data -= space_left; + usbatm_extract_one_cell(instance, cell_buf); + instance->buf_usage = 0; + } else { + /* not enough data to fill the cell */ + memcpy(cell_buf + buf_usage, source, avail_data); + instance->buf_usage = buf_usage + avail_data; + return; + } + } + + for (; avail_data >= stride; avail_data -= stride, source += stride) + usbatm_extract_one_cell(instance, source); + + if (avail_data > 0) { + /* length was not a multiple of stride - + * save remaining data for next call */ + memcpy(instance->cell_buf, source, avail_data); + instance->buf_usage = avail_data; + } +} + + +/************* +** encode ** +*************/ + +static unsigned int usbatm_write_cells(struct usbatm_data *instance, + struct sk_buff *skb, + u8 *target, unsigned int avail_space) +{ + struct usbatm_control *ctrl = UDSL_SKB(skb); + struct atm_vcc *vcc = ctrl->atm.vcc; + unsigned int bytes_written; + unsigned int stride = instance->tx_channel.stride; + + for (bytes_written = 0; bytes_written < avail_space && ctrl->len; + bytes_written += stride, target += stride) { + unsigned int data_len = min_t(unsigned int, skb->len, ATM_CELL_PAYLOAD); + unsigned int left = ATM_CELL_PAYLOAD - data_len; + u8 *ptr = target; + + ptr[0] = vcc->vpi >> 4; + ptr[1] = (vcc->vpi << 4) | (vcc->vci >> 12); + ptr[2] = vcc->vci >> 4; + ptr[3] = vcc->vci << 4; + ptr[4] = 0xec; + ptr += ATM_CELL_HEADER; + + skb_copy_from_linear_data(skb, ptr, data_len); + ptr += data_len; + __skb_pull(skb, data_len); + + if (!left) + continue; + + memset(ptr, 0, left); + + if (left >= ATM_AAL5_TRAILER) { /* trailer will go in this cell */ + u8 *trailer = target + ATM_CELL_SIZE - ATM_AAL5_TRAILER; + /* trailer[0] = 0; UU = 0 */ + /* trailer[1] = 0; CPI = 0 */ + trailer[2] = ctrl->len >> 8; + trailer[3] = ctrl->len; + + ctrl->crc = ~crc32_be(ctrl->crc, ptr, left - 4); + + trailer[4] = ctrl->crc >> 24; + trailer[5] = ctrl->crc >> 16; + trailer[6] = ctrl->crc >> 8; + trailer[7] = ctrl->crc; + + target[3] |= 0x2; /* adjust PTI */ + + ctrl->len = 0; /* tag this skb finished */ + } else + ctrl->crc = crc32_be(ctrl->crc, ptr, left); + } + + return bytes_written; +} + + +/************** +** receive ** +**************/ + +static void usbatm_rx_process(unsigned long data) +{ + struct usbatm_data *instance = (struct usbatm_data *)data; + struct urb *urb; + + while ((urb = usbatm_pop_urb(&instance->rx_channel))) { + vdbg(&instance->usb_intf->dev, + "%s: processing urb 0x%p", __func__, urb); + + if (usb_pipeisoc(urb->pipe)) { + unsigned char *merge_start = NULL; + unsigned int merge_length = 0; + const unsigned int packet_size = instance->rx_channel.packet_size; + int i; + + for (i = 0; i < urb->number_of_packets; i++) { + if (!urb->iso_frame_desc[i].status) { + unsigned int actual_length = urb->iso_frame_desc[i].actual_length; + + if (!merge_length) + merge_start = (unsigned char *)urb->transfer_buffer + urb->iso_frame_desc[i].offset; + merge_length += actual_length; + if (merge_length && (actual_length < packet_size)) { + usbatm_extract_cells(instance, merge_start, merge_length); + merge_length = 0; + } + } else { + atm_rldbg(instance, "%s: status %d in frame %d!\n", __func__, urb->status, i); + if (merge_length) + usbatm_extract_cells(instance, merge_start, merge_length); + merge_length = 0; + instance->buf_usage = 0; + } + } + + if (merge_length) + usbatm_extract_cells(instance, merge_start, merge_length); + } else + if (!urb->status) + usbatm_extract_cells(instance, urb->transfer_buffer, urb->actual_length); + else + instance->buf_usage = 0; + + if (usbatm_submit_urb(urb)) + return; + } +} + + +/*********** +** send ** +***********/ + +static void usbatm_tx_process(unsigned long data) +{ + struct usbatm_data *instance = (struct usbatm_data *)data; + struct sk_buff *skb = instance->current_skb; + struct urb *urb = NULL; + const unsigned int buf_size = instance->tx_channel.buf_size; + unsigned int bytes_written = 0; + u8 *buffer = NULL; + + if (!skb) + skb = skb_dequeue(&instance->sndqueue); + + while (skb) { + if (!urb) { + urb = usbatm_pop_urb(&instance->tx_channel); + if (!urb) + break; /* no more senders */ + buffer = urb->transfer_buffer; + bytes_written = (urb->status == -EAGAIN) ? + urb->transfer_buffer_length : 0; + } + + bytes_written += usbatm_write_cells(instance, skb, + buffer + bytes_written, + buf_size - bytes_written); + + vdbg(&instance->usb_intf->dev, + "%s: wrote %u bytes from skb 0x%p to urb 0x%p", + __func__, bytes_written, skb, urb); + + if (!UDSL_SKB(skb)->len) { + struct atm_vcc *vcc = UDSL_SKB(skb)->atm.vcc; + + usbatm_pop(vcc, skb); + atomic_inc(&vcc->stats->tx); + + skb = skb_dequeue(&instance->sndqueue); + } + + if (bytes_written == buf_size || (!skb && bytes_written)) { + urb->transfer_buffer_length = bytes_written; + + if (usbatm_submit_urb(urb)) + break; + urb = NULL; + } + } + + instance->current_skb = skb; +} + +static void usbatm_cancel_send(struct usbatm_data *instance, + struct atm_vcc *vcc) +{ + struct sk_buff *skb, *n; + + spin_lock_irq(&instance->sndqueue.lock); + skb_queue_walk_safe(&instance->sndqueue, skb, n) { + if (UDSL_SKB(skb)->atm.vcc == vcc) { + atm_dbg(instance, "%s: popping skb 0x%p\n", __func__, skb); + __skb_unlink(skb, &instance->sndqueue); + usbatm_pop(vcc, skb); + } + } + spin_unlock_irq(&instance->sndqueue.lock); + + tasklet_disable(&instance->tx_channel.tasklet); + if ((skb = instance->current_skb) && (UDSL_SKB(skb)->atm.vcc == vcc)) { + atm_dbg(instance, "%s: popping current skb (0x%p)\n", __func__, skb); + instance->current_skb = NULL; + usbatm_pop(vcc, skb); + } + tasklet_enable(&instance->tx_channel.tasklet); +} + +static int usbatm_atm_send(struct atm_vcc *vcc, struct sk_buff *skb) +{ + struct usbatm_data *instance = vcc->dev->dev_data; + struct usbatm_control *ctrl = UDSL_SKB(skb); + int err; + + /* racy disconnection check - fine */ + if (!instance || instance->disconnected) { +#ifdef VERBOSE_DEBUG + printk_ratelimited(KERN_DEBUG "%s: %s!\n", __func__, instance ? "disconnected" : "NULL instance"); +#endif + err = -ENODEV; + goto fail; + } + + if (vcc->qos.aal != ATM_AAL5) { + atm_rldbg(instance, "%s: unsupported ATM type %d!\n", __func__, vcc->qos.aal); + err = -EINVAL; + goto fail; + } + + if (skb->len > ATM_MAX_AAL5_PDU) { + atm_rldbg(instance, "%s: packet too long (%d vs %d)!\n", + __func__, skb->len, ATM_MAX_AAL5_PDU); + err = -EINVAL; + goto fail; + } + + PACKETDEBUG(instance, skb->data, skb->len); + + /* initialize the control block */ + ctrl->atm.vcc = vcc; + ctrl->len = skb->len; + ctrl->crc = crc32_be(~0, skb->data, skb->len); + + skb_queue_tail(&instance->sndqueue, skb); + tasklet_schedule(&instance->tx_channel.tasklet); + + return 0; + + fail: + usbatm_pop(vcc, skb); + return err; +} + + +/******************** +** bean counting ** +********************/ + +static void usbatm_destroy_instance(struct kref *kref) +{ + struct usbatm_data *instance = container_of(kref, struct usbatm_data, refcount); + + tasklet_kill(&instance->rx_channel.tasklet); + tasklet_kill(&instance->tx_channel.tasklet); + usb_put_dev(instance->usb_dev); + kfree(instance); +} + +static void usbatm_get_instance(struct usbatm_data *instance) +{ + kref_get(&instance->refcount); +} + +static void usbatm_put_instance(struct usbatm_data *instance) +{ + kref_put(&instance->refcount, usbatm_destroy_instance); +} + + +/********** +** ATM ** +**********/ + +static void usbatm_atm_dev_close(struct atm_dev *atm_dev) +{ + struct usbatm_data *instance = atm_dev->dev_data; + + if (!instance) + return; + + atm_dev->dev_data = NULL; /* catch bugs */ + usbatm_put_instance(instance); /* taken in usbatm_atm_init */ +} + +static int usbatm_atm_proc_read(struct atm_dev *atm_dev, loff_t *pos, char *page) +{ + struct usbatm_data *instance = atm_dev->dev_data; + int left = *pos; + + if (!instance) + return -ENODEV; + + if (!left--) + return sprintf(page, "%s\n", instance->description); + + if (!left--) + return sprintf(page, "MAC: %pM\n", atm_dev->esi); + + if (!left--) + return sprintf(page, + "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop )\n", + atomic_read(&atm_dev->stats.aal5.tx), + atomic_read(&atm_dev->stats.aal5.tx_err), + atomic_read(&atm_dev->stats.aal5.rx), + atomic_read(&atm_dev->stats.aal5.rx_err), + atomic_read(&atm_dev->stats.aal5.rx_drop)); + + if (!left--) { + if (instance->disconnected) + return sprintf(page, "Disconnected\n"); + else + switch (atm_dev->signal) { + case ATM_PHY_SIG_FOUND: + return sprintf(page, "Line up\n"); + case ATM_PHY_SIG_LOST: + return sprintf(page, "Line down\n"); + default: + return sprintf(page, "Line state unknown\n"); + } + } + + return 0; +} + +static int usbatm_atm_open(struct atm_vcc *vcc) +{ + struct usbatm_data *instance = vcc->dev->dev_data; + struct usbatm_vcc_data *new = NULL; + int ret; + int vci = vcc->vci; + short vpi = vcc->vpi; + + if (!instance) + return -ENODEV; + + /* only support AAL5 */ + if ((vcc->qos.aal != ATM_AAL5)) { + atm_warn(instance, "%s: unsupported ATM type %d!\n", __func__, vcc->qos.aal); + return -EINVAL; + } + + /* sanity checks */ + if ((vcc->qos.rxtp.max_sdu < 0) || (vcc->qos.rxtp.max_sdu > ATM_MAX_AAL5_PDU)) { + atm_dbg(instance, "%s: max_sdu %d out of range!\n", __func__, vcc->qos.rxtp.max_sdu); + return -EINVAL; + } + + mutex_lock(&instance->serialize); /* vs self, usbatm_atm_close, usbatm_usb_disconnect */ + + if (instance->disconnected) { + atm_dbg(instance, "%s: disconnected!\n", __func__); + ret = -ENODEV; + goto fail; + } + + if (usbatm_find_vcc(instance, vpi, vci)) { + atm_dbg(instance, "%s: %hd/%d already in use!\n", __func__, vpi, vci); + ret = -EADDRINUSE; + goto fail; + } + + if (!(new = kzalloc(sizeof(struct usbatm_vcc_data), GFP_KERNEL))) { + atm_err(instance, "%s: no memory for vcc_data!\n", __func__); + ret = -ENOMEM; + goto fail; + } + + new->vcc = vcc; + new->vpi = vpi; + new->vci = vci; + + new->sarb = alloc_skb(usbatm_pdu_length(vcc->qos.rxtp.max_sdu), GFP_KERNEL); + if (!new->sarb) { + atm_err(instance, "%s: no memory for SAR buffer!\n", __func__); + ret = -ENOMEM; + goto fail; + } + + vcc->dev_data = new; + + tasklet_disable(&instance->rx_channel.tasklet); + instance->cached_vcc = new; + instance->cached_vpi = vpi; + instance->cached_vci = vci; + list_add(&new->list, &instance->vcc_list); + tasklet_enable(&instance->rx_channel.tasklet); + + set_bit(ATM_VF_ADDR, &vcc->flags); + set_bit(ATM_VF_PARTIAL, &vcc->flags); + set_bit(ATM_VF_READY, &vcc->flags); + + mutex_unlock(&instance->serialize); + + atm_dbg(instance, "%s: allocated vcc data 0x%p\n", __func__, new); + + return 0; + +fail: + kfree(new); + mutex_unlock(&instance->serialize); + return ret; +} + +static void usbatm_atm_close(struct atm_vcc *vcc) +{ + struct usbatm_data *instance = vcc->dev->dev_data; + struct usbatm_vcc_data *vcc_data = vcc->dev_data; + + if (!instance || !vcc_data) + return; + + usbatm_cancel_send(instance, vcc); + + mutex_lock(&instance->serialize); /* vs self, usbatm_atm_open, usbatm_usb_disconnect */ + + tasklet_disable(&instance->rx_channel.tasklet); + if (instance->cached_vcc == vcc_data) { + instance->cached_vcc = NULL; + instance->cached_vpi = ATM_VPI_UNSPEC; + instance->cached_vci = ATM_VCI_UNSPEC; + } + list_del(&vcc_data->list); + tasklet_enable(&instance->rx_channel.tasklet); + + kfree_skb(vcc_data->sarb); + vcc_data->sarb = NULL; + + kfree(vcc_data); + vcc->dev_data = NULL; + + vcc->vpi = ATM_VPI_UNSPEC; + vcc->vci = ATM_VCI_UNSPEC; + clear_bit(ATM_VF_READY, &vcc->flags); + clear_bit(ATM_VF_PARTIAL, &vcc->flags); + clear_bit(ATM_VF_ADDR, &vcc->flags); + + mutex_unlock(&instance->serialize); +} + +static int usbatm_atm_ioctl(struct atm_dev *atm_dev, unsigned int cmd, + void __user *arg) +{ + struct usbatm_data *instance = atm_dev->dev_data; + + if (!instance || instance->disconnected) + return -ENODEV; + + switch (cmd) { + case ATM_QUERYLOOP: + return put_user(ATM_LM_NONE, (int __user *)arg) ? -EFAULT : 0; + default: + return -ENOIOCTLCMD; + } +} + +static int usbatm_atm_init(struct usbatm_data *instance) +{ + struct atm_dev *atm_dev; + int ret, i; + + /* ATM init. The ATM initialization scheme suffers from an intrinsic race + * condition: callbacks we register can be executed at once, before we have + * initialized the struct atm_dev. To protect against this, all callbacks + * abort if atm_dev->dev_data is NULL. */ + atm_dev = atm_dev_register(instance->driver_name, + &instance->usb_intf->dev, &usbatm_atm_devops, + -1, NULL); + if (!atm_dev) { + usb_err(instance, "%s: failed to register ATM device!\n", __func__); + return -1; + } + + instance->atm_dev = atm_dev; + + atm_dev->ci_range.vpi_bits = ATM_CI_MAX; + atm_dev->ci_range.vci_bits = ATM_CI_MAX; + atm_dev->signal = ATM_PHY_SIG_UNKNOWN; + + /* temp init ATM device, set to 128kbit */ + atm_dev->link_rate = 128 * 1000 / 424; + + if (instance->driver->atm_start && ((ret = instance->driver->atm_start(instance, atm_dev)) < 0)) { + atm_err(instance, "%s: atm_start failed: %d!\n", __func__, ret); + goto fail; + } + + usbatm_get_instance(instance); /* dropped in usbatm_atm_dev_close */ + + /* ready for ATM callbacks */ + mb(); + atm_dev->dev_data = instance; + + /* submit all rx URBs */ + for (i = 0; i < num_rcv_urbs; i++) + usbatm_submit_urb(instance->urbs[i]); + + return 0; + + fail: + instance->atm_dev = NULL; + atm_dev_deregister(atm_dev); /* usbatm_atm_dev_close will eventually be called */ + return ret; +} + + +/********** +** USB ** +**********/ + +static int usbatm_do_heavy_init(void *arg) +{ + struct usbatm_data *instance = arg; + int ret; + + allow_signal(SIGTERM); + complete(&instance->thread_started); + + ret = instance->driver->heavy_init(instance, instance->usb_intf); + + if (!ret) + ret = usbatm_atm_init(instance); + + mutex_lock(&instance->serialize); + instance->thread = NULL; + mutex_unlock(&instance->serialize); + + complete_and_exit(&instance->thread_exited, ret); +} + +static int usbatm_heavy_init(struct usbatm_data *instance) +{ + struct task_struct *t; + + t = kthread_create(usbatm_do_heavy_init, instance, "%s", + instance->driver->driver_name); + if (IS_ERR(t)) { + usb_err(instance, "%s: failed to create kernel_thread (%ld)!\n", + __func__, PTR_ERR(t)); + return PTR_ERR(t); + } + + instance->thread = t; + wake_up_process(t); + wait_for_completion(&instance->thread_started); + + return 0; +} + +static void usbatm_tasklet_schedule(unsigned long data) +{ + tasklet_schedule((struct tasklet_struct *) data); +} + +static void usbatm_init_channel(struct usbatm_channel *channel) +{ + spin_lock_init(&channel->lock); + INIT_LIST_HEAD(&channel->list); + channel->delay.function = usbatm_tasklet_schedule; + channel->delay.data = (unsigned long) &channel->tasklet; + init_timer(&channel->delay); +} + +int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, + struct usbatm_driver *driver) +{ + struct device *dev = &intf->dev; + struct usb_device *usb_dev = interface_to_usbdev(intf); + struct usbatm_data *instance; + char *buf; + int error = -ENOMEM; + int i, length; + unsigned int maxpacket, num_packets; + + /* instance init */ + instance = kzalloc(sizeof(*instance) + sizeof(struct urb *) * (num_rcv_urbs + num_snd_urbs), GFP_KERNEL); + if (!instance) { + dev_err(dev, "%s: no memory for instance data!\n", __func__); + return -ENOMEM; + } + + /* public fields */ + + instance->driver = driver; + strlcpy(instance->driver_name, driver->driver_name, + sizeof(instance->driver_name)); + + instance->usb_dev = usb_dev; + instance->usb_intf = intf; + + buf = instance->description; + length = sizeof(instance->description); + + if ((i = usb_string(usb_dev, usb_dev->descriptor.iProduct, buf, length)) < 0) + goto bind; + + buf += i; + length -= i; + + i = scnprintf(buf, length, " ("); + buf += i; + length -= i; + + if (length <= 0 || (i = usb_make_path(usb_dev, buf, length)) < 0) + goto bind; + + buf += i; + length -= i; + + snprintf(buf, length, ")"); + + bind: + if (driver->bind && (error = driver->bind(instance, intf, id)) < 0) { + dev_err(dev, "%s: bind failed: %d!\n", __func__, error); + goto fail_free; + } + + /* private fields */ + + kref_init(&instance->refcount); /* dropped in usbatm_usb_disconnect */ + mutex_init(&instance->serialize); + + instance->thread = NULL; + init_completion(&instance->thread_started); + init_completion(&instance->thread_exited); + + INIT_LIST_HEAD(&instance->vcc_list); + skb_queue_head_init(&instance->sndqueue); + + usbatm_init_channel(&instance->rx_channel); + usbatm_init_channel(&instance->tx_channel); + tasklet_init(&instance->rx_channel.tasklet, usbatm_rx_process, (unsigned long)instance); + tasklet_init(&instance->tx_channel.tasklet, usbatm_tx_process, (unsigned long)instance); + instance->rx_channel.stride = ATM_CELL_SIZE + driver->rx_padding; + instance->tx_channel.stride = ATM_CELL_SIZE + driver->tx_padding; + instance->rx_channel.usbatm = instance->tx_channel.usbatm = instance; + + if ((instance->flags & UDSL_USE_ISOC) && driver->isoc_in) + instance->rx_channel.endpoint = usb_rcvisocpipe(usb_dev, driver->isoc_in); + else + instance->rx_channel.endpoint = usb_rcvbulkpipe(usb_dev, driver->bulk_in); + + instance->tx_channel.endpoint = usb_sndbulkpipe(usb_dev, driver->bulk_out); + + /* tx buffer size must be a positive multiple of the stride */ + instance->tx_channel.buf_size = max(instance->tx_channel.stride, + snd_buf_bytes - (snd_buf_bytes % instance->tx_channel.stride)); + + /* rx buffer size must be a positive multiple of the endpoint maxpacket */ + maxpacket = usb_maxpacket(usb_dev, instance->rx_channel.endpoint, 0); + + if ((maxpacket < 1) || (maxpacket > UDSL_MAX_BUF_SIZE)) { + dev_err(dev, "%s: invalid endpoint %02x!\n", __func__, + usb_pipeendpoint(instance->rx_channel.endpoint)); + error = -EINVAL; + goto fail_unbind; + } + + num_packets = max(1U, (rcv_buf_bytes + maxpacket / 2) / maxpacket); /* round */ + + if (num_packets * maxpacket > UDSL_MAX_BUF_SIZE) + num_packets--; + + instance->rx_channel.buf_size = num_packets * maxpacket; + instance->rx_channel.packet_size = maxpacket; + + for (i = 0; i < 2; i++) { + struct usbatm_channel *channel = i ? + &instance->tx_channel : &instance->rx_channel; + + dev_dbg(dev, "%s: using %d byte buffer for %s channel 0x%p\n", + __func__, channel->buf_size, i ? "tx" : "rx", channel); + } + + /* initialize urbs */ + + for (i = 0; i < num_rcv_urbs + num_snd_urbs; i++) { + u8 *buffer; + struct usbatm_channel *channel = i < num_rcv_urbs ? + &instance->rx_channel : &instance->tx_channel; + struct urb *urb; + unsigned int iso_packets = usb_pipeisoc(channel->endpoint) ? channel->buf_size / channel->packet_size : 0; + + urb = usb_alloc_urb(iso_packets, GFP_KERNEL); + if (!urb) { + dev_err(dev, "%s: no memory for urb %d!\n", __func__, i); + error = -ENOMEM; + goto fail_unbind; + } + + instance->urbs[i] = urb; + + /* zero the tx padding to avoid leaking information */ + buffer = kzalloc(channel->buf_size, GFP_KERNEL); + if (!buffer) { + dev_err(dev, "%s: no memory for buffer %d!\n", __func__, i); + error = -ENOMEM; + goto fail_unbind; + } + + usb_fill_bulk_urb(urb, instance->usb_dev, channel->endpoint, + buffer, channel->buf_size, usbatm_complete, channel); + if (iso_packets) { + int j; + urb->interval = 1; + urb->transfer_flags = URB_ISO_ASAP; + urb->number_of_packets = iso_packets; + for (j = 0; j < iso_packets; j++) { + urb->iso_frame_desc[j].offset = channel->packet_size * j; + urb->iso_frame_desc[j].length = channel->packet_size; + } + } + + /* put all tx URBs on the list of spares */ + if (i >= num_rcv_urbs) + list_add_tail(&urb->urb_list, &channel->list); + + vdbg(&intf->dev, "%s: alloced buffer 0x%p buf size %u urb 0x%p", + __func__, urb->transfer_buffer, urb->transfer_buffer_length, urb); + } + + instance->cached_vpi = ATM_VPI_UNSPEC; + instance->cached_vci = ATM_VCI_UNSPEC; + instance->cell_buf = kmalloc(instance->rx_channel.stride, GFP_KERNEL); + + if (!instance->cell_buf) { + dev_err(dev, "%s: no memory for cell buffer!\n", __func__); + error = -ENOMEM; + goto fail_unbind; + } + + if (!(instance->flags & UDSL_SKIP_HEAVY_INIT) && driver->heavy_init) { + error = usbatm_heavy_init(instance); + } else { + complete(&instance->thread_exited); /* pretend that heavy_init was run */ + error = usbatm_atm_init(instance); + } + + if (error < 0) + goto fail_unbind; + + usb_get_dev(usb_dev); + usb_set_intfdata(intf, instance); + + return 0; + + fail_unbind: + if (instance->driver->unbind) + instance->driver->unbind(instance, intf); + fail_free: + kfree(instance->cell_buf); + + for (i = 0; i < num_rcv_urbs + num_snd_urbs; i++) { + if (instance->urbs[i]) + kfree(instance->urbs[i]->transfer_buffer); + usb_free_urb(instance->urbs[i]); + } + + kfree(instance); + + return error; +} +EXPORT_SYMBOL_GPL(usbatm_usb_probe); + +void usbatm_usb_disconnect(struct usb_interface *intf) +{ + struct device *dev = &intf->dev; + struct usbatm_data *instance = usb_get_intfdata(intf); + struct usbatm_vcc_data *vcc_data; + int i; + + if (!instance) { + dev_dbg(dev, "%s: NULL instance!\n", __func__); + return; + } + + usb_set_intfdata(intf, NULL); + + mutex_lock(&instance->serialize); + instance->disconnected = 1; + if (instance->thread != NULL) + send_sig(SIGTERM, instance->thread, 1); + mutex_unlock(&instance->serialize); + + wait_for_completion(&instance->thread_exited); + + mutex_lock(&instance->serialize); + list_for_each_entry(vcc_data, &instance->vcc_list, list) + vcc_release_async(vcc_data->vcc, -EPIPE); + mutex_unlock(&instance->serialize); + + tasklet_disable(&instance->rx_channel.tasklet); + tasklet_disable(&instance->tx_channel.tasklet); + + for (i = 0; i < num_rcv_urbs + num_snd_urbs; i++) + usb_kill_urb(instance->urbs[i]); + + del_timer_sync(&instance->rx_channel.delay); + del_timer_sync(&instance->tx_channel.delay); + + /* turn usbatm_[rt]x_process into something close to a no-op */ + /* no need to take the spinlock */ + INIT_LIST_HEAD(&instance->rx_channel.list); + INIT_LIST_HEAD(&instance->tx_channel.list); + + tasklet_enable(&instance->rx_channel.tasklet); + tasklet_enable(&instance->tx_channel.tasklet); + + if (instance->atm_dev && instance->driver->atm_stop) + instance->driver->atm_stop(instance, instance->atm_dev); + + if (instance->driver->unbind) + instance->driver->unbind(instance, intf); + + instance->driver_data = NULL; + + for (i = 0; i < num_rcv_urbs + num_snd_urbs; i++) { + kfree(instance->urbs[i]->transfer_buffer); + usb_free_urb(instance->urbs[i]); + } + + kfree(instance->cell_buf); + + /* ATM finalize */ + if (instance->atm_dev) { + atm_dev_deregister(instance->atm_dev); + instance->atm_dev = NULL; + } + + usbatm_put_instance(instance); /* taken in usbatm_usb_probe */ +} +EXPORT_SYMBOL_GPL(usbatm_usb_disconnect); + + +/*********** +** init ** +***********/ + +static int __init usbatm_usb_init(void) +{ + if (sizeof(struct usbatm_control) > FIELD_SIZEOF(struct sk_buff, cb)) { + printk(KERN_ERR "%s unusable with this kernel!\n", usbatm_driver_name); + return -EIO; + } + + if ((num_rcv_urbs > UDSL_MAX_RCV_URBS) + || (num_snd_urbs > UDSL_MAX_SND_URBS) + || (rcv_buf_bytes < 1) + || (rcv_buf_bytes > UDSL_MAX_BUF_SIZE) + || (snd_buf_bytes < 1) + || (snd_buf_bytes > UDSL_MAX_BUF_SIZE)) + return -EINVAL; + + return 0; +} +module_init(usbatm_usb_init); + +static void __exit usbatm_usb_exit(void) +{ +} +module_exit(usbatm_usb_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); +MODULE_VERSION(DRIVER_VERSION); + +/************ +** debug ** +************/ + +#ifdef VERBOSE_DEBUG +static int usbatm_print_packet(struct usbatm_data *instance, + const unsigned char *data, int len) +{ + unsigned char buffer[256]; + int i = 0, j = 0; + + for (i = 0; i < len;) { + buffer[0] = '\0'; + sprintf(buffer, "%.3d :", i); + for (j = 0; (j < 16) && (i < len); j++, i++) + sprintf(buffer, "%s %2.2x", buffer, data[i]); + dev_dbg(&instance->usb_intf->dev, "%s", buffer); + } + return i; +} +#endif diff --git a/drivers/usb/atm/usbatm.h b/drivers/usb/atm/usbatm.h new file mode 100644 index 00000000000..f3eecd967a8 --- /dev/null +++ b/drivers/usb/atm/usbatm.h @@ -0,0 +1,199 @@ +/****************************************************************************** + * usbatm.h - Generic USB xDSL driver core + * + * Copyright (C) 2001, Alcatel + * Copyright (C) 2003, Duncan Sands, SolNegro, Josep Comas + * Copyright (C) 2004, David Woodhouse + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + ******************************************************************************/ + +#ifndef _USBATM_H_ +#define _USBATM_H_ + +#include <linux/atm.h> +#include <linux/atmdev.h> +#include <linux/completion.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/kref.h> +#include <linux/list.h> +#include <linux/stringify.h> +#include <linux/usb.h> +#include <linux/mutex.h> +#include <linux/ratelimit.h> + +/* +#define VERBOSE_DEBUG +*/ + +#define usb_err(instance, format, arg...) \ + dev_err(&(instance)->usb_intf->dev , format , ## arg) +#define usb_info(instance, format, arg...) \ + dev_info(&(instance)->usb_intf->dev , format , ## arg) +#define usb_warn(instance, format, arg...) \ + dev_warn(&(instance)->usb_intf->dev , format , ## arg) +#define usb_dbg(instance, format, arg...) \ + dev_dbg(&(instance)->usb_intf->dev , format , ## arg) + +/* FIXME: move to dev_* once ATM is driver model aware */ +#define atm_printk(level, instance, format, arg...) \ + printk(level "ATM dev %d: " format , \ + (instance)->atm_dev->number , ## arg) + +#define atm_err(instance, format, arg...) \ + atm_printk(KERN_ERR, instance , format , ## arg) +#define atm_info(instance, format, arg...) \ + atm_printk(KERN_INFO, instance , format , ## arg) +#define atm_warn(instance, format, arg...) \ + atm_printk(KERN_WARNING, instance , format , ## arg) +#define atm_dbg(instance, format, ...) \ + pr_debug("ATM dev %d: " format, \ + (instance)->atm_dev->number, ##__VA_ARGS__) +#define atm_rldbg(instance, format, ...) \ + pr_debug_ratelimited("ATM dev %d: " format, \ + (instance)->atm_dev->number, ##__VA_ARGS__) + +/* flags, set by mini-driver in bind() */ + +#define UDSL_SKIP_HEAVY_INIT (1<<0) +#define UDSL_USE_ISOC (1<<1) +#define UDSL_IGNORE_EILSEQ (1<<2) + + +/* mini driver */ + +struct usbatm_data; + +/* +* Assuming all methods exist and succeed, they are called in this order: +* +* bind, heavy_init, atm_start, ..., atm_stop, unbind +*/ + +struct usbatm_driver { + const char *driver_name; + + /* init device ... can sleep, or cause probe() failure */ + int (*bind) (struct usbatm_data *, struct usb_interface *, + const struct usb_device_id *id); + + /* additional device initialization that is too slow to be done in probe() */ + int (*heavy_init) (struct usbatm_data *, struct usb_interface *); + + /* cleanup device ... can sleep, but can't fail */ + void (*unbind) (struct usbatm_data *, struct usb_interface *); + + /* init ATM device ... can sleep, or cause ATM initialization failure */ + int (*atm_start) (struct usbatm_data *, struct atm_dev *); + + /* cleanup ATM device ... can sleep, but can't fail */ + void (*atm_stop) (struct usbatm_data *, struct atm_dev *); + + int bulk_in; /* bulk rx endpoint */ + int isoc_in; /* isochronous rx endpoint */ + int bulk_out; /* bulk tx endpoint */ + + unsigned rx_padding; + unsigned tx_padding; +}; + +extern int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, + struct usbatm_driver *driver); +extern void usbatm_usb_disconnect(struct usb_interface *intf); + + +struct usbatm_channel { + int endpoint; /* usb pipe */ + unsigned int stride; /* ATM cell size + padding */ + unsigned int buf_size; /* urb buffer size */ + unsigned int packet_size; /* endpoint maxpacket */ + spinlock_t lock; + struct list_head list; + struct tasklet_struct tasklet; + struct timer_list delay; + struct usbatm_data *usbatm; +}; + +/* main driver data */ + +struct usbatm_data { + /****************** + * public fields * + ******************/ + + /* mini driver */ + struct usbatm_driver *driver; + void *driver_data; + char driver_name[16]; + unsigned int flags; /* set by mini-driver in bind() */ + + /* USB device */ + struct usb_device *usb_dev; + struct usb_interface *usb_intf; + char description[64]; + + /* ATM device */ + struct atm_dev *atm_dev; + + /******************************** + * private fields - do not use * + ********************************/ + + struct kref refcount; + struct mutex serialize; + int disconnected; + + /* heavy init */ + struct task_struct *thread; + struct completion thread_started; + struct completion thread_exited; + + /* ATM device */ + struct list_head vcc_list; + + struct usbatm_channel rx_channel; + struct usbatm_channel tx_channel; + + struct sk_buff_head sndqueue; + struct sk_buff *current_skb; /* being emptied */ + + struct usbatm_vcc_data *cached_vcc; + int cached_vci; + short cached_vpi; + + unsigned char *cell_buf; /* holds partial rx cell */ + unsigned int buf_usage; + + struct urb *urbs[0]; +}; + +static inline void *to_usbatm_driver_data(struct usb_interface *intf) +{ + struct usbatm_data *usbatm_instance; + + if (intf == NULL) + return NULL; + + usbatm_instance = usb_get_intfdata(intf); + + if (usbatm_instance == NULL) /* set NULL before unbind() */ + return NULL; + + return usbatm_instance->driver_data; /* set NULL after unbind() */ +} + +#endif /* _USBATM_H_ */ diff --git a/drivers/usb/atm/xusbatm.c b/drivers/usb/atm/xusbatm.c new file mode 100644 index 00000000000..b3b1bb78b2e --- /dev/null +++ b/drivers/usb/atm/xusbatm.c @@ -0,0 +1,229 @@ +/****************************************************************************** + * xusbatm.c - dumb usbatm-based driver for modems initialized in userspace + * + * Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru) + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the Free + * Software Foundation; either version 2 of the License, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + ******************************************************************************/ + +#include <linux/module.h> +#include <linux/etherdevice.h> /* for eth_random_addr() */ + +#include "usbatm.h" + + +#define XUSBATM_DRIVERS_MAX 8 + +#define XUSBATM_PARM(name, type, parmtype, desc) \ + static type name[XUSBATM_DRIVERS_MAX]; \ + static unsigned int num_##name; \ + module_param_array(name, parmtype, &num_##name, 0444); \ + MODULE_PARM_DESC(name, desc) + +XUSBATM_PARM(vendor, unsigned short, ushort, "USB device vendor"); +XUSBATM_PARM(product, unsigned short, ushort, "USB device product"); + +XUSBATM_PARM(rx_endpoint, unsigned char, byte, "rx endpoint number"); +XUSBATM_PARM(tx_endpoint, unsigned char, byte, "tx endpoint number"); +XUSBATM_PARM(rx_padding, unsigned char, byte, "rx padding (default 0)"); +XUSBATM_PARM(tx_padding, unsigned char, byte, "tx padding (default 0)"); +XUSBATM_PARM(rx_altsetting, unsigned char, byte, "rx altsetting (default 0)"); +XUSBATM_PARM(tx_altsetting, unsigned char, byte, "rx altsetting (default 0)"); + +static const char xusbatm_driver_name[] = "xusbatm"; + +static struct usbatm_driver xusbatm_drivers[XUSBATM_DRIVERS_MAX]; +static struct usb_device_id xusbatm_usb_ids[XUSBATM_DRIVERS_MAX + 1]; +static struct usb_driver xusbatm_usb_driver; + +static struct usb_interface *xusbatm_find_intf(struct usb_device *usb_dev, int altsetting, u8 ep) +{ + struct usb_host_interface *alt; + struct usb_interface *intf; + int i, j; + + for (i = 0; i < usb_dev->actconfig->desc.bNumInterfaces; i++) + if ((intf = usb_dev->actconfig->interface[i]) && (alt = usb_altnum_to_altsetting(intf, altsetting))) + for (j = 0; j < alt->desc.bNumEndpoints; j++) + if (alt->endpoint[j].desc.bEndpointAddress == ep) + return intf; + return NULL; +} + +static int xusbatm_capture_intf(struct usbatm_data *usbatm, struct usb_device *usb_dev, + struct usb_interface *intf, int altsetting, int claim) +{ + int ifnum = intf->altsetting->desc.bInterfaceNumber; + int ret; + + if (claim && (ret = usb_driver_claim_interface(&xusbatm_usb_driver, intf, usbatm))) { + usb_err(usbatm, "%s: failed to claim interface %2d (%d)!\n", __func__, ifnum, ret); + return ret; + } + if ((ret = usb_set_interface(usb_dev, ifnum, altsetting))) { + usb_err(usbatm, "%s: altsetting %2d for interface %2d failed (%d)!\n", __func__, altsetting, ifnum, ret); + return ret; + } + return 0; +} + +static void xusbatm_release_intf(struct usb_device *usb_dev, struct usb_interface *intf, int claimed) +{ + if (claimed) { + usb_set_intfdata(intf, NULL); + usb_driver_release_interface(&xusbatm_usb_driver, intf); + } +} + +static int xusbatm_bind(struct usbatm_data *usbatm, + struct usb_interface *intf, const struct usb_device_id *id) +{ + struct usb_device *usb_dev = interface_to_usbdev(intf); + int drv_ix = id - xusbatm_usb_ids; + int rx_alt = rx_altsetting[drv_ix]; + int tx_alt = tx_altsetting[drv_ix]; + struct usb_interface *rx_intf = xusbatm_find_intf(usb_dev, rx_alt, rx_endpoint[drv_ix]); + struct usb_interface *tx_intf = xusbatm_find_intf(usb_dev, tx_alt, tx_endpoint[drv_ix]); + int ret; + + usb_dbg(usbatm, "%s: binding driver %d: vendor %04x product %04x" + " rx: ep %02x padd %d alt %2d tx: ep %02x padd %d alt %2d\n", + __func__, drv_ix, vendor[drv_ix], product[drv_ix], + rx_endpoint[drv_ix], rx_padding[drv_ix], rx_alt, + tx_endpoint[drv_ix], tx_padding[drv_ix], tx_alt); + + if (!rx_intf || !tx_intf) { + if (!rx_intf) + usb_dbg(usbatm, "%s: no interface contains endpoint %02x in altsetting %2d\n", + __func__, rx_endpoint[drv_ix], rx_alt); + if (!tx_intf) + usb_dbg(usbatm, "%s: no interface contains endpoint %02x in altsetting %2d\n", + __func__, tx_endpoint[drv_ix], tx_alt); + return -ENODEV; + } + + if ((rx_intf != intf) && (tx_intf != intf)) + return -ENODEV; + + if ((rx_intf == tx_intf) && (rx_alt != tx_alt)) { + usb_err(usbatm, "%s: altsettings clash on interface %2d (%2d vs %2d)!\n", __func__, + rx_intf->altsetting->desc.bInterfaceNumber, rx_alt, tx_alt); + return -EINVAL; + } + + usb_dbg(usbatm, "%s: rx If#=%2d; tx If#=%2d\n", __func__, + rx_intf->altsetting->desc.bInterfaceNumber, + tx_intf->altsetting->desc.bInterfaceNumber); + + if ((ret = xusbatm_capture_intf(usbatm, usb_dev, rx_intf, rx_alt, rx_intf != intf))) + return ret; + + if ((tx_intf != rx_intf) && (ret = xusbatm_capture_intf(usbatm, usb_dev, tx_intf, tx_alt, tx_intf != intf))) { + xusbatm_release_intf(usb_dev, rx_intf, rx_intf != intf); + return ret; + } + + return 0; +} + +static void xusbatm_unbind(struct usbatm_data *usbatm, + struct usb_interface *intf) +{ + struct usb_device *usb_dev = interface_to_usbdev(intf); + int i; + + usb_dbg(usbatm, "%s entered\n", __func__); + + for (i = 0; i < usb_dev->actconfig->desc.bNumInterfaces; i++) { + struct usb_interface *cur_intf = usb_dev->actconfig->interface[i]; + + if (cur_intf && (usb_get_intfdata(cur_intf) == usbatm)) { + usb_set_intfdata(cur_intf, NULL); + usb_driver_release_interface(&xusbatm_usb_driver, cur_intf); + } + } +} + +static int xusbatm_atm_start(struct usbatm_data *usbatm, + struct atm_dev *atm_dev) +{ + atm_dbg(usbatm, "%s entered\n", __func__); + + /* use random MAC as we've no way to get it from the device */ + eth_random_addr(atm_dev->esi); + + return 0; +} + + +static int xusbatm_usb_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + return usbatm_usb_probe(intf, id, + xusbatm_drivers + (id - xusbatm_usb_ids)); +} + +static struct usb_driver xusbatm_usb_driver = { + .name = xusbatm_driver_name, + .probe = xusbatm_usb_probe, + .disconnect = usbatm_usb_disconnect, + .id_table = xusbatm_usb_ids +}; + +static int __init xusbatm_init(void) +{ + int i; + + if (!num_vendor || + num_vendor != num_product || + num_vendor != num_rx_endpoint || + num_vendor != num_tx_endpoint) { + printk(KERN_WARNING "xusbatm: malformed module parameters\n"); + return -EINVAL; + } + + for (i = 0; i < num_vendor; i++) { + rx_endpoint[i] |= USB_DIR_IN; + tx_endpoint[i] &= USB_ENDPOINT_NUMBER_MASK; + + xusbatm_usb_ids[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; + xusbatm_usb_ids[i].idVendor = vendor[i]; + xusbatm_usb_ids[i].idProduct = product[i]; + + xusbatm_drivers[i].driver_name = xusbatm_driver_name; + xusbatm_drivers[i].bind = xusbatm_bind; + xusbatm_drivers[i].unbind = xusbatm_unbind; + xusbatm_drivers[i].atm_start = xusbatm_atm_start; + xusbatm_drivers[i].bulk_in = rx_endpoint[i]; + xusbatm_drivers[i].bulk_out = tx_endpoint[i]; + xusbatm_drivers[i].rx_padding = rx_padding[i]; + xusbatm_drivers[i].tx_padding = tx_padding[i]; + } + + return usb_register(&xusbatm_usb_driver); +} +module_init(xusbatm_init); + +static void __exit xusbatm_exit(void) +{ + usb_deregister(&xusbatm_usb_driver); +} +module_exit(xusbatm_exit); + +MODULE_AUTHOR("Roman Kagan, Duncan Sands"); +MODULE_DESCRIPTION("Driver for USB ADSL modems initialized in userspace"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("0.1"); |