| /* ZD1211 USB-WLAN driver for Linux |
| * |
| * Copyright (C) 2005-2007 Ulrich Kunitz <kune@deine-taler.de> |
| * Copyright (C) 2006-2007 Daniel Drake <dsd@gentoo.org> |
| * |
| * 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 _ZD_USB_H |
| #define _ZD_USB_H |
| |
| #include <linux/completion.h> |
| #include <linux/netdevice.h> |
| #include <linux/spinlock.h> |
| #include <linux/skbuff.h> |
| #include <linux/usb.h> |
| |
| #include "zd_def.h" |
| |
| #define ZD_USB_TX_HIGH 5 |
| #define ZD_USB_TX_LOW 2 |
| |
| #define ZD_TX_TIMEOUT (HZ * 5) |
| #define ZD_TX_WATCHDOG_INTERVAL round_jiffies_relative(HZ) |
| #define ZD_RX_IDLE_INTERVAL round_jiffies_relative(30 * HZ) |
| |
| enum devicetype { |
| DEVICE_ZD1211 = 0, |
| DEVICE_ZD1211B = 1, |
| DEVICE_INSTALLER = 2, |
| }; |
| |
| enum endpoints { |
| EP_CTRL = 0, |
| EP_DATA_OUT = 1, |
| EP_DATA_IN = 2, |
| EP_INT_IN = 3, |
| EP_REGS_OUT = 4, |
| }; |
| |
| enum { |
| USB_MAX_TRANSFER_SIZE = 4096, /* bytes */ |
| /* FIXME: The original driver uses this value. We have to check, |
| * whether the MAX_TRANSFER_SIZE is sufficient and this needs only be |
| * used if one combined frame is split over two USB transactions. |
| */ |
| USB_MAX_RX_SIZE = 4800, /* bytes */ |
| USB_MAX_IOWRITE16_COUNT = 15, |
| USB_MAX_IOWRITE32_COUNT = USB_MAX_IOWRITE16_COUNT/2, |
| USB_MAX_IOREAD16_COUNT = 15, |
| USB_MAX_IOREAD32_COUNT = USB_MAX_IOREAD16_COUNT/2, |
| USB_MIN_RFWRITE_BIT_COUNT = 16, |
| USB_MAX_RFWRITE_BIT_COUNT = 28, |
| USB_MAX_EP_INT_BUFFER = 64, |
| USB_ZD1211B_BCD_DEVICE = 0x4810, |
| }; |
| |
| enum control_requests { |
| USB_REQ_WRITE_REGS = 0x21, |
| USB_REQ_READ_REGS = 0x22, |
| USB_REQ_WRITE_RF = 0x23, |
| USB_REQ_PROG_FLASH = 0x24, |
| USB_REQ_EEPROM_START = 0x0128, /* ? request is a byte */ |
| USB_REQ_EEPROM_MID = 0x28, |
| USB_REQ_EEPROM_END = 0x0228, /* ? request is a byte */ |
| USB_REQ_FIRMWARE_DOWNLOAD = 0x30, |
| USB_REQ_FIRMWARE_CONFIRM = 0x31, |
| USB_REQ_FIRMWARE_READ_DATA = 0x32, |
| }; |
| |
| struct usb_req_read_regs { |
| __le16 id; |
| __le16 addr[0]; |
| } __packed; |
| |
| struct reg_data { |
| __le16 addr; |
| __le16 value; |
| } __packed; |
| |
| struct usb_req_write_regs { |
| __le16 id; |
| struct reg_data reg_writes[0]; |
| } __packed; |
| |
| enum { |
| RF_IF_LE = 0x02, |
| RF_CLK = 0x04, |
| RF_DATA = 0x08, |
| }; |
| |
| struct usb_req_rfwrite { |
| __le16 id; |
| __le16 value; |
| /* 1: 3683a */ |
| /* 2: other (default) */ |
| __le16 bits; |
| /* RF2595: 24 */ |
| __le16 bit_values[0]; |
| /* (CR203 & ~(RF_IF_LE | RF_CLK | RF_DATA)) | (bit ? RF_DATA : 0) */ |
| } __packed; |
| |
| /* USB interrupt */ |
| |
| enum usb_int_id { |
| USB_INT_TYPE = 0x01, |
| USB_INT_ID_REGS = 0x90, |
| USB_INT_ID_RETRY_FAILED = 0xa0, |
| }; |
| |
| enum usb_int_flags { |
| USB_INT_READ_REGS_EN = 0x01, |
| }; |
| |
| struct usb_int_header { |
| u8 type; /* must always be 1 */ |
| u8 id; |
| } __packed; |
| |
| struct usb_int_regs { |
| struct usb_int_header hdr; |
| struct reg_data regs[0]; |
| } __packed; |
| |
| struct usb_int_retry_fail { |
| struct usb_int_header hdr; |
| u8 new_rate; |
| u8 _dummy; |
| u8 addr[ETH_ALEN]; |
| u8 ibss_wakeup_dest; |
| } __packed; |
| |
| struct read_regs_int { |
| struct completion completion; |
| /* Stores the USB int structure and contains the USB address of the |
| * first requested register before request. |
| */ |
| u8 buffer[USB_MAX_EP_INT_BUFFER]; |
| int length; |
| __le16 cr_int_addr; |
| }; |
| |
| struct zd_ioreq16 { |
| zd_addr_t addr; |
| u16 value; |
| }; |
| |
| struct zd_ioreq32 { |
| zd_addr_t addr; |
| u32 value; |
| }; |
| |
| struct zd_usb_interrupt { |
| struct read_regs_int read_regs; |
| spinlock_t lock; |
| struct urb *urb; |
| void *buffer; |
| dma_addr_t buffer_dma; |
| int interval; |
| u8 read_regs_enabled:1; |
| }; |
| |
| static inline struct usb_int_regs *get_read_regs(struct zd_usb_interrupt *intr) |
| { |
| return (struct usb_int_regs *)intr->read_regs.buffer; |
| } |
| |
| #define RX_URBS_COUNT 5 |
| |
| struct zd_usb_rx { |
| spinlock_t lock; |
| struct mutex setup_mutex; |
| struct delayed_work idle_work; |
| struct tasklet_struct reset_timer_tasklet; |
| u8 fragment[2 * USB_MAX_RX_SIZE]; |
| unsigned int fragment_length; |
| unsigned int usb_packet_size; |
| struct urb **urbs; |
| int urbs_count; |
| }; |
| |
| /** |
| * struct zd_usb_tx - structure used for transmitting frames |
| * @enabled: atomic enabled flag, indicates whether tx is enabled |
| * @lock: lock for transmission |
| * @submitted: anchor for URBs sent to device |
| * @submitted_urbs: atomic integer that counts the URBs having sent to the |
| * device, which haven't been completed |
| * @stopped: indicates whether higher level tx queues are stopped |
| */ |
| struct zd_usb_tx { |
| atomic_t enabled; |
| spinlock_t lock; |
| struct delayed_work watchdog_work; |
| struct sk_buff_head submitted_skbs; |
| struct usb_anchor submitted; |
| int submitted_urbs; |
| u8 stopped:1, watchdog_enabled:1; |
| }; |
| |
| /* Contains the usb parts. The structure doesn't require a lock because intf |
| * will not be changed after initialization. |
| */ |
| struct zd_usb { |
| struct zd_usb_interrupt intr; |
| struct zd_usb_rx rx; |
| struct zd_usb_tx tx; |
| struct usb_interface *intf; |
| struct usb_anchor submitted_cmds; |
| struct urb *urb_async_waiting; |
| int cmd_error; |
| u8 req_buf[64]; /* zd_usb_iowrite16v needs 62 bytes */ |
| u8 is_zd1211b:1, initialized:1, was_running:1, in_async:1; |
| }; |
| |
| #define zd_usb_dev(usb) (&usb->intf->dev) |
| |
| static inline struct usb_device *zd_usb_to_usbdev(struct zd_usb *usb) |
| { |
| return interface_to_usbdev(usb->intf); |
| } |
| |
| static inline struct ieee80211_hw *zd_intf_to_hw(struct usb_interface *intf) |
| { |
| return usb_get_intfdata(intf); |
| } |
| |
| static inline struct ieee80211_hw *zd_usb_to_hw(struct zd_usb *usb) |
| { |
| return zd_intf_to_hw(usb->intf); |
| } |
| |
| void zd_usb_init(struct zd_usb *usb, struct ieee80211_hw *hw, |
| struct usb_interface *intf); |
| int zd_usb_init_hw(struct zd_usb *usb); |
| void zd_usb_clear(struct zd_usb *usb); |
| |
| int zd_usb_scnprint_id(struct zd_usb *usb, char *buffer, size_t size); |
| |
| void zd_tx_watchdog_enable(struct zd_usb *usb); |
| void zd_tx_watchdog_disable(struct zd_usb *usb); |
| |
| int zd_usb_enable_int(struct zd_usb *usb); |
| void zd_usb_disable_int(struct zd_usb *usb); |
| |
| int zd_usb_enable_rx(struct zd_usb *usb); |
| void zd_usb_disable_rx(struct zd_usb *usb); |
| |
| void zd_usb_reset_rx_idle_timer(struct zd_usb *usb); |
| |
| void zd_usb_enable_tx(struct zd_usb *usb); |
| void zd_usb_disable_tx(struct zd_usb *usb); |
| |
| int zd_usb_tx(struct zd_usb *usb, struct sk_buff *skb); |
| |
| int zd_usb_ioread16v(struct zd_usb *usb, u16 *values, |
| const zd_addr_t *addresses, unsigned int count); |
| |
| static inline int zd_usb_ioread16(struct zd_usb *usb, u16 *value, |
| const zd_addr_t addr) |
| { |
| return zd_usb_ioread16v(usb, value, (const zd_addr_t *)&addr, 1); |
| } |
| |
| void zd_usb_iowrite16v_async_start(struct zd_usb *usb); |
| int zd_usb_iowrite16v_async_end(struct zd_usb *usb, unsigned int timeout); |
| int zd_usb_iowrite16v_async(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs, |
| unsigned int count); |
| int zd_usb_iowrite16v(struct zd_usb *usb, const struct zd_ioreq16 *ioreqs, |
| unsigned int count); |
| |
| int zd_usb_rfwrite(struct zd_usb *usb, u32 value, u8 bits); |
| |
| int zd_usb_read_fw(struct zd_usb *usb, zd_addr_t addr, u8 *data, u16 len); |
| |
| extern struct workqueue_struct *zd_workqueue; |
| |
| #endif /* _ZD_USB_H */ |