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Release 4.11 drivers/net/wireless/zydas/zd1211rw/zd_usb.h

/* 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, see <http://www.gnu.org/licenses/>.
 */

#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];
	/* (ZD_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;
	
struct usb_req_read_regs *req;
	
unsigned int req_count;
	/* 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;
	
atomic_t read_regs_enabled;
	
u8 read_regs_int_overridden:1;
};


static inline struct usb_int_regs *get_read_regs(struct zd_usb_interrupt *intr) { return (struct usb_int_regs *)intr->read_regs.buffer; }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Drake26100.00%1100.00%
Total26100.00%1100.00%

#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); }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Drake22100.00%1100.00%
Total22100.00%1100.00%


static inline struct ieee80211_hw *zd_intf_to_hw(struct usb_interface *intf) { return usb_get_intfdata(intf); }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Drake20100.00%2100.00%
Total20100.00%2100.00%


static inline struct ieee80211_hw *zd_usb_to_hw(struct zd_usb *usb) { return zd_intf_to_hw(usb->intf); }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Drake22100.00%2100.00%
Total22100.00%2100.00%

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, &addr, 1); }

Contributors

PersonTokensPropCommitsCommitProp
Daniel Drake33100.00%1100.00%
Total33100.00%1100.00%

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 */

Overall Contributors

PersonTokensPropCommitsCommitProp
Daniel Drake80482.12%527.78%
Jussi Kivilinna16116.45%1055.56%
Eric Dumazet70.72%15.56%
Ulrich Kunitz60.61%15.56%
Jeff Kirsher10.10%15.56%
Total979100.00%18100.00%
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