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280 lines
6.7 KiB
280 lines
6.7 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* ZD1211 USB-WLAN driver for Linux |
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* |
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* Copyright (C) 2005-2007 Ulrich Kunitz <[email protected]> |
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* Copyright (C) 2006-2007 Daniel Drake <[email protected]> |
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*/ |
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#ifndef _ZD_USB_H |
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#define _ZD_USB_H |
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#include <linux/completion.h> |
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#include <linux/netdevice.h> |
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#include <linux/spinlock.h> |
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#include <linux/skbuff.h> |
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#include <linux/usb.h> |
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#include "zd_def.h" |
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#define ZD_USB_TX_HIGH 5 |
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#define ZD_USB_TX_LOW 2 |
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#define ZD_TX_TIMEOUT (HZ * 5) |
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#define ZD_TX_WATCHDOG_INTERVAL round_jiffies_relative(HZ) |
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#define ZD_RX_IDLE_INTERVAL round_jiffies_relative(30 * HZ) |
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enum devicetype { |
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DEVICE_ZD1211 = 0, |
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DEVICE_ZD1211B = 1, |
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DEVICE_INSTALLER = 2, |
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}; |
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enum endpoints { |
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EP_CTRL = 0, |
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EP_DATA_OUT = 1, |
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EP_DATA_IN = 2, |
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EP_INT_IN = 3, |
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EP_REGS_OUT = 4, |
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}; |
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enum { |
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USB_MAX_TRANSFER_SIZE = 4096, /* bytes */ |
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/* FIXME: The original driver uses this value. We have to check, |
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* whether the MAX_TRANSFER_SIZE is sufficient and this needs only be |
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* used if one combined frame is split over two USB transactions. |
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*/ |
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USB_MAX_RX_SIZE = 4800, /* bytes */ |
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USB_MAX_IOWRITE16_COUNT = 15, |
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USB_MAX_IOWRITE32_COUNT = USB_MAX_IOWRITE16_COUNT/2, |
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USB_MAX_IOREAD16_COUNT = 15, |
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USB_MAX_IOREAD32_COUNT = USB_MAX_IOREAD16_COUNT/2, |
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USB_MIN_RFWRITE_BIT_COUNT = 16, |
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USB_MAX_RFWRITE_BIT_COUNT = 28, |
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USB_MAX_EP_INT_BUFFER = 64, |
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USB_ZD1211B_BCD_DEVICE = 0x4810, |
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}; |
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enum control_requests { |
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USB_REQ_WRITE_REGS = 0x21, |
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USB_REQ_READ_REGS = 0x22, |
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USB_REQ_WRITE_RF = 0x23, |
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USB_REQ_PROG_FLASH = 0x24, |
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USB_REQ_EEPROM_START = 0x0128, /* ? request is a byte */ |
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USB_REQ_EEPROM_MID = 0x28, |
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USB_REQ_EEPROM_END = 0x0228, /* ? request is a byte */ |
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USB_REQ_FIRMWARE_DOWNLOAD = 0x30, |
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USB_REQ_FIRMWARE_CONFIRM = 0x31, |
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USB_REQ_FIRMWARE_READ_DATA = 0x32, |
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}; |
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struct usb_req_read_regs { |
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__le16 id; |
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__le16 addr[]; |
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} __packed; |
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struct reg_data { |
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__le16 addr; |
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__le16 value; |
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} __packed; |
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struct usb_req_write_regs { |
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__le16 id; |
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struct reg_data reg_writes[]; |
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} __packed; |
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enum { |
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RF_IF_LE = 0x02, |
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RF_CLK = 0x04, |
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RF_DATA = 0x08, |
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}; |
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struct usb_req_rfwrite { |
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__le16 id; |
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__le16 value; |
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/* 1: 3683a */ |
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/* 2: other (default) */ |
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__le16 bits; |
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/* RF2595: 24 */ |
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__le16 bit_values[]; |
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/* (ZD_CR203 & ~(RF_IF_LE | RF_CLK | RF_DATA)) | (bit ? RF_DATA : 0) */ |
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} __packed; |
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/* USB interrupt */ |
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enum usb_int_id { |
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USB_INT_TYPE = 0x01, |
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USB_INT_ID_REGS = 0x90, |
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USB_INT_ID_RETRY_FAILED = 0xa0, |
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}; |
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enum usb_int_flags { |
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USB_INT_READ_REGS_EN = 0x01, |
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}; |
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struct usb_int_header { |
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u8 type; /* must always be 1 */ |
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u8 id; |
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} __packed; |
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struct usb_int_regs { |
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struct usb_int_header hdr; |
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struct reg_data regs[]; |
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} __packed; |
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struct usb_int_retry_fail { |
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struct usb_int_header hdr; |
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u8 new_rate; |
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u8 _dummy; |
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u8 addr[ETH_ALEN]; |
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u8 ibss_wakeup_dest; |
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} __packed; |
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struct read_regs_int { |
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struct completion completion; |
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struct usb_req_read_regs *req; |
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unsigned int req_count; |
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/* Stores the USB int structure and contains the USB address of the |
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* first requested register before request. |
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*/ |
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u8 buffer[USB_MAX_EP_INT_BUFFER]; |
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int length; |
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__le16 cr_int_addr; |
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}; |
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struct zd_ioreq16 { |
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zd_addr_t addr; |
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u16 value; |
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}; |
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struct zd_ioreq32 { |
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zd_addr_t addr; |
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u32 value; |
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}; |
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struct zd_usb_interrupt { |
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struct read_regs_int read_regs; |
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spinlock_t lock; |
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struct urb *urb; |
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void *buffer; |
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dma_addr_t buffer_dma; |
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int interval; |
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atomic_t read_regs_enabled; |
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u8 read_regs_int_overridden:1; |
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}; |
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static inline struct usb_int_regs *get_read_regs(struct zd_usb_interrupt *intr) |
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{ |
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return (struct usb_int_regs *)intr->read_regs.buffer; |
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} |
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#define RX_URBS_COUNT 5 |
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struct zd_usb_rx { |
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spinlock_t lock; |
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struct mutex setup_mutex; |
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struct delayed_work idle_work; |
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struct tasklet_struct reset_timer_tasklet; |
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u8 fragment[2 * USB_MAX_RX_SIZE]; |
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unsigned int fragment_length; |
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unsigned int usb_packet_size; |
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struct urb **urbs; |
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int urbs_count; |
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}; |
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/** |
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* struct zd_usb_tx - structure used for transmitting frames |
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* @enabled: atomic enabled flag, indicates whether tx is enabled |
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* @lock: lock for transmission |
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* @submitted: anchor for URBs sent to device |
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* @submitted_urbs: atomic integer that counts the URBs having sent to the |
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* device, which haven't been completed |
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* @stopped: indicates whether higher level tx queues are stopped |
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*/ |
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struct zd_usb_tx { |
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atomic_t enabled; |
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spinlock_t lock; |
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struct delayed_work watchdog_work; |
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struct sk_buff_head submitted_skbs; |
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struct usb_anchor submitted; |
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int submitted_urbs; |
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u8 stopped:1, watchdog_enabled:1; |
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}; |
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/* Contains the usb parts. The structure doesn't require a lock because intf |
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* will not be changed after initialization. |
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*/ |
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struct zd_usb { |
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struct zd_usb_interrupt intr; |
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struct zd_usb_rx rx; |
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struct zd_usb_tx tx; |
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struct usb_interface *intf; |
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struct usb_anchor submitted_cmds; |
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struct urb *urb_async_waiting; |
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int cmd_error; |
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u8 req_buf[64]; /* zd_usb_iowrite16v needs 62 bytes */ |
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u8 is_zd1211b:1, initialized:1, was_running:1, in_async:1; |
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}; |
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#define zd_usb_dev(usb) (&usb->intf->dev) |
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static inline struct usb_device *zd_usb_to_usbdev(struct zd_usb *usb) |
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{ |
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return interface_to_usbdev(usb->intf); |
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} |
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static inline struct ieee80211_hw *zd_intf_to_hw(struct usb_interface *intf) |
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{ |
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return usb_get_intfdata(intf); |
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} |
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static inline struct ieee80211_hw *zd_usb_to_hw(struct zd_usb *usb) |
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{ |
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return zd_intf_to_hw(usb->intf); |
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} |
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void zd_usb_init(struct zd_usb *usb, struct ieee80211_hw *hw, |
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struct usb_interface *intf); |
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int zd_usb_init_hw(struct zd_usb *usb); |
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void zd_usb_clear(struct zd_usb *usb); |
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int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size); |
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void zd_tx_watchdog_enable(struct zd_usb *usb); |
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void zd_tx_watchdog_disable(struct zd_usb *usb); |
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int zd_usb_enable_int(struct zd_usb *usb); |
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void zd_usb_disable_int(struct zd_usb *usb); |
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int zd_usb_enable_rx(struct zd_usb *usb); |
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void zd_usb_disable_rx(struct zd_usb *usb); |
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void zd_usb_reset_rx_idle_timer(struct zd_usb *usb); |
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void zd_usb_enable_tx(struct zd_usb *usb); |
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void zd_usb_disable_tx(struct zd_usb *usb); |
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int zd_usb_tx(struct zd_usb *usb, struct sk_buff *skb); |
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int zd_usb_ioread16v(struct zd_usb *usb, u16 *values, |
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const zd_addr_t *addresses, unsigned int count); |
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static inline int zd_usb_ioread16(struct zd_usb *usb, u16 *value, |
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const zd_addr_t addr) |
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{ |
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return zd_usb_ioread16v(usb, value, &addr, 1); |
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} |
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void zd_usb_iowrite16v_async_start(struct zd_usb *usb); |
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int zd_usb_iowrite16v_async_end(struct zd_usb *usb, unsigned int timeout); |
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int zd_usb_iowrite16v_async(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs, |
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unsigned int count); |
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int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs, |
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unsigned int count); |
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int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits); |
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int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len); |
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extern struct workqueue_struct *zd_workqueue; |
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#endif /* _ZD_USB_H */
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