// SPDX-License-Identifier: GPL-2.0+ /****************************************************************************** * cxacru.c - driver for USB ADSL modems based on * Conexant AccessRunner chipset * * Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan * Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru) * Copyright (C) 2007 Simon Arlott * Copyright (C) 2009 Simon Arlott ******************************************************************************/ /* * Credit is due for Josep Comas, who created the original patch to speedtch.c * to support the different padding used by the AccessRunner (now generalized * into usbatm), and the userspace firmware loading utility. */ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/kernel.h> #include <linux/timer.h> #include <linux/errno.h> #include <linux/slab.h> #include <linux/device.h> #include <linux/firmware.h> #include <linux/mutex.h> #include <asm/unaligned.h> #include "usbatm.h" #define DRIVER_AUTHOR … #define DRIVER_DESC … static const char cxacru_driver_name[] = …; #define CXACRU_EP_CMD … #define CXACRU_EP_DATA … #define CMD_PACKET_SIZE … #define CMD_MAX_CONFIG … /* Addresses */ #define PLLFCLK_ADDR … #define PLLBCLK_ADDR … #define SDRAMEN_ADDR … #define FW_ADDR … #define BR_ADDR … #define SIG_ADDR … #define BR_STACK_ADDR … /* Values */ #define SDRAM_ENA … #define CMD_TIMEOUT … #define POLL_INTERVAL … /* commands for interaction with the modem through the control channel before * firmware is loaded */ enum cxacru_fw_request { … }; /* commands for interaction with the modem through the control channel once * firmware is loaded */ enum cxacru_cm_request { … }; /* 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 { … }; /* reply codes to the commands above */ enum cxacru_cm_status { … }; /* indices into CARD_INFO_GET return array */ enum cxacru_info_idx { … }; enum cxacru_poll_state { … }; struct cxacru_modem_type { … }; struct cxacru_data { … }; 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) … #define CXACRU_CMD_INIT(_name) … #define CXACRU_SET_INIT(_name) … #define CXACRU_ATTR_INIT(_value, _type, _name) … #define CXACRU_ATTR_CREATE(_v, _t, _name) … #define CXACRU_CMD_CREATE(_name) … #define CXACRU_SET_CREATE(_name) … #define CXACRU__ATTR_CREATE(_name) … #define CXACRU_ATTR_REMOVE(_v, _t, _name) … #define CXACRU_CMD_REMOVE(_name) … #define CXACRU_SET_REMOVE(_name) … #define CXACRU__ATTR_REMOVE(_name) … static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf) { … } static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf) { … } static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf) { … } static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf) { … } static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf) { … } static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf) { … } static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf) { … } /* * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since * this data is already in atm_dev there's no point. * * MAC_ADDRESS_HIGH = 0x????5544 * MAC_ADDRESS_LOW = 0x33221100 * Where 00-55 are bytes 0-5 of the MAC. */ static ssize_t mac_address_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t adsl_state_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t adsl_state_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */ static ssize_t adsl_config_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } /* * 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_ALL_FILES(INIT); static struct attribute *cxacru_attrs[] = …; ATTRIBUTE_GROUPS(…); /* the following three functions are stolen from drivers/usb/core/message.c */ static void cxacru_blocking_completion(struct urb *urb) { … } struct cxacru_timer { … }; static void cxacru_timeout_kill(struct timer_list *t) { … } static int cxacru_start_wait_urb(struct urb *urb, struct completion *done, int *actual_length) { … } static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm, u8 *wdata, int wsize, u8 *rdata, int rsize) { … } static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm, u32 *data, int size) { … } static int cxacru_card_status(struct cxacru_data *instance) { … } static int cxacru_atm_start(struct usbatm_data *usbatm_instance, struct atm_dev *atm_dev) { … } static void cxacru_poll_status(struct work_struct *work) { … } 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) { … } static void cxacru_upload_firmware(struct cxacru_data *instance, const struct firmware *fw, const struct firmware *bp) { … } static int cxacru_find_firmware(struct cxacru_data *instance, char *phase, const struct firmware **fw_p) { … } static int cxacru_heavy_init(struct usbatm_data *usbatm_instance, struct usb_interface *usb_intf) { … } static int cxacru_bind(struct usbatm_data *usbatm_instance, struct usb_interface *intf, const struct usb_device_id *id) { … } static void cxacru_unbind(struct usbatm_data *usbatm_instance, struct usb_interface *intf) { … } static const struct cxacru_modem_type cxacru_cafe = …; static const struct cxacru_modem_type cxacru_cb00 = …; static const struct usb_device_id cxacru_usb_ids[] = …; MODULE_DEVICE_TABLE(usb, cxacru_usb_ids); static struct usbatm_driver cxacru_driver = …; static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) { … } static struct usb_driver cxacru_usb_driver = …; module_usb_driver(…) …; MODULE_AUTHOR(…); MODULE_DESCRIPTION(…); MODULE_LICENSE(…) …;
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