main_usb.c

VIA VT6656 USB linux source code.

/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * This software is copyrighted by and is the sole property of
 * VIA Networking Technologies, Inc. This software may only be used
 * in accordance with the corresponding license agreement. Any unauthorized
 * use, duplication, transmission, distribution, or disclosure of this
 * software is expressly forbidden.
 *
 * This software is provided by VIA Networking Technologies, Inc. "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 VIA Networking Technologies, Inc.
 * be liable for any direct, indirect, incidental, special, exemplary, or
 * consequential damages. 
 * 
 * File: main_usb.c
 *
 * Purpose: driver entry for initial, open, close, tx and rx.
 *
 * Author: Lyndon Chen
 *
 * Date: Dec 8, 2005
 *
 * Functions:
 *   
 *   vntwusb_found1 - module initial (insmod) driver entry 
 *   device_remove1 - module remove entry 
 *   device_open - allocate dma/descripter resource & initial mac/bbp function
 *   device_xmit - asynchrous data tx function
 *   device_set_multi - set mac filter
 *   device_ioctl - ioctl entry
 *   device_close - shutdown mac/bbp & free dma/descripter resource
 *   device_alloc_frag_buf - rx fragement pre-allocated function
 *   device_free_tx_bufs - free tx buffer function
 *   device_dma0_tx_80211- tx 802.11 frame via dma0
 *   device_dma0_xmit- tx PS bufferred frame via dma0
 *   device_init_registers- initial MAC & BBP & RF internal registers.
 *   device_init_rings- initial tx/rx ring buffer  
 *   device_init_defrag_cb- initial & allocate de-fragement buffer. 
 *   device_tx_srv- tx interrupt service function
 *  
 * Revision History:
 */ 
#undef __NO_VERSION__

#if !defined(__DEVICE_H__)
#include "device.h"
#endif
#if !defined(__CARD_H__)
#include "card.h"
#endif
#if !defined(__TBIT_H__)
#include "tbit.h"
#endif
#if !defined(__BASEBAND_H__)
#include "baseband.h"
#endif
#if !defined(__MAC_H__)
#include "mac.h"
#endif
#if !defined(__TETHER_H__)
#include "tether.h"
#endif
#if !defined(__WMGR_H__)
#include "wmgr.h"
#endif
#if !defined(__WCTL_H__)
#include "wctl.h"
#endif
#if !defined(__POWER_H__)
#include "power.h"
#endif
#if !defined(__WCMD_H__)
#include "wcmd.h"
#endif
#if !defined(__IOCMD_H__)
#include "iocmd.h"
#endif
#if !defined(__TCRC_H__)
#include "tcrc.h"
#endif
#if !defined(__RXTX_H__)
#include "rxtx.h"
#endif
#if !defined(__BSSDB_H__)
#include "bssdb.h"
#endif
#if !defined(__HOSTAP_H__)
#include "hostap.h"
#endif
#if !defined(__WPACTL_H__)
#include "wpactl.h"
#endif
#if !defined(__IOCTL_H__)
#include "ioctl.h"
#endif
#if !defined(__IWCTL_H__)
#include "iwctl.h"
#endif
#if !defined(__DPC_H__)
#include "dpc.h"
#endif
#if !defined(__IOCMD_H__)
#include "iocmd.h"
#endif
#if !defined(__DATARATE_H__)
#include "datarate.h"
#endif                      
#if !defined(__RF_H__)
#include "rf.h"
#endif
#if !defined(__FIRMWARE_H__)
#include "firmware.h"
#endif

#if !defined(__MAC_H__)
#include "mac.h"
#endif

#if !defined(__RNDIS_H__)
#include "rndis.h"
#endif
#if !defined(__CONTROL_H__)
#include "control.h"
#endif
#if !defined (_CHANNEL_H_)
#include "channel.h"
#endif
#if !defined(__INT_H__)
#include "int.h"
#endif


/*---------------------  Static Definitions -------------------------*/
//static int          msglevel                =MSG_LEVEL_DEBUG;
static int          msglevel                =MSG_LEVEL_INFO;

//
// Define module options
//

// Version Information 
#define DRIVER_AUTHOR "VIA Networking Technologies, Inc., <[e-mail]>"
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_LICENSE("Proprietary");
MODULE_DESCRIPTION(DEVICE_FULL_DRV_NAM);

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15)
#define DEVICE_PARAM(N,D) \
        static int N[MAX_UINTS]=OPTION_DEFAULT;\
        module_param_array(N, int, NULL, 0);\
        MODULE_PARM_DESC(N, D);

#else
#define DEVICE_PARAM(N,D) \
        static const int N[MAX_UINTS]=OPTION_DEFAULT;\
        MODULE_PARM(N, "1-" __MODULE_STRING(MAX_UINTS) "i");\
        MODULE_PARM_DESC(N, D);
#endif

#define RX_DESC_MIN0     16
#define RX_DESC_MAX0     128
#define RX_DESC_DEF0     64
DEVICE_PARAM(RxDescriptors0,"Number of receive usb desc buffer");


#define TX_DESC_MIN0     16
#define TX_DESC_MAX0     128
#define TX_DESC_DEF0     64
DEVICE_PARAM(TxDescriptors0,"Number of transmit usb desc buffer");


#define CHANNEL_MIN     1
#define CHANNEL_MAX     14
#define CHANNEL_DEF     6

DEVICE_PARAM(Channel, "Channel number");


/* PreambleType[] is the preamble length used for transmit.
   0: indicate allows long preamble type
   1: indicate allows short preamble type
*/

#define PREAMBLE_TYPE_DEF     1

DEVICE_PARAM(PreambleType, "Preamble Type");


#define RTS_THRESH_MIN     512
#define RTS_THRESH_MAX     2347
#define RTS_THRESH_DEF     2347

DEVICE_PARAM(RTSThreshold, "RTS threshold");


#define FRAG_THRESH_MIN     256
#define FRAG_THRESH_MAX     2346
#define FRAG_THRESH_DEF     2346

DEVICE_PARAM(FragThreshold, "Fragmentation threshold");


#define DATA_RATE_MIN     0
#define DATA_RATE_MAX     13
#define DATA_RATE_DEF     13
/* datarate[] index
   0: indicate 1 Mbps   0x02
   1: indicate 2 Mbps   0x04
   2: indicate 5.5 Mbps 0x0B
   3: indicate 11 Mbps  0x16
   4: indicate 6 Mbps   0x0c
   5: indicate 9 Mbps   0x12
   6: indicate 12 Mbps  0x18 
   7: indicate 18 Mbps  0x24
   8: indicate 24 Mbps  0x30
   9: indicate 36 Mbps  0x48
  10: indicate 48 Mbps  0x60
  11: indicate 54 Mbps  0x6c 
  12: indicate 72 Mbps  0x90
  13: indicate auto rate
*/

DEVICE_PARAM(ConnectionRate, "Connection data rate");

#define OP_MODE_MAX     2
#define OP_MODE_DEF     0
#define OP_MODE_MIN     0

DEVICE_PARAM(OPMode, "Infrastruct, adhoc, AP mode ");

/* OpMode[] is used for transmit.
   0: indicate infrastruct mode used
   1: indicate adhoc mode used
   2: indicate AP mode used   
*/    
    
    
/* PSMode[] 
   0: indicate disable power saving mode
   1: indicate enable power saving mode   
*/

#define PS_MODE_DEF     0

DEVICE_PARAM(PSMode, "Power saving mode");

    
#define SHORT_RETRY_MIN     0
#define SHORT_RETRY_MAX     31
#define SHORT_RETRY_DEF     8


DEVICE_PARAM(ShortRetryLimit, "Short frame retry limits");
    
#define LONG_RETRY_MIN     0
#define LONG_RETRY_MAX     15
#define LONG_RETRY_DEF     4


DEVICE_PARAM(LongRetryLimit, "long frame retry limits");


/* BasebandType[] baseband type selected
   0: indicate 802.11a type
   1: indicate 802.11b type
   2: indicate 802.11g type
*/    
#define BBP_TYPE_MIN     0
#define BBP_TYPE_MAX     2
#define BBP_TYPE_DEF     2

DEVICE_PARAM(BasebandType, "baseband type");



/* 80211hEnable[] 
   0: indicate disable 802.11h
   1: indicate enable 802.11h
*/

#define X80211h_MODE_DEF     0

DEVICE_PARAM(b80211hEnable, "802.11h mode");


//
// Static vars definitions
// 



static struct usb_device_id vntwusb_table[] = {
	{USB_DEVICE(VNT_USB_VENDOR_ID, VNT_USB_PRODUCT_ID)},
	{}
};



#ifdef WIRELESS_EXT
// Frequency list (map channels to frequencies)
/*
static const long frequency_list[] = { 
    2412, 2417, 2422, 2427, 2432, 2437, 2442, 2447, 2452, 2457, 2462, 2467, 2472, 2484,
    4915, 4920, 4925, 4935, 4940, 4945, 4960, 4980,
    5035, 5040, 5045, 5055, 5060, 5080, 5170, 5180, 5190, 5200, 5210, 5220, 5230, 5240,
    5260, 5280, 5300, 5320, 5500, 5520, 5540, 5560, 5580, 5600, 5620, 5640, 5660, 5680,
    5700, 5745, 5765, 5785, 5805, 5825
	};	
		
		
#ifndef IW_ENCODE_NOKEY
#define IW_ENCODE_NOKEY         0x0800 
#define IW_ENCODE_MODE  (IW_ENCODE_DISABLED | IW_ENCODE_RESTRICTED | IW_ENCODE_OPEN)
#endif 

#if WIRELESS_EXT > 12
static const struct iw_handler_def	iwctl_handler_def;
#else	
struct iw_request_info {};
#endif	//WIRELESS_EXT > 12
*/

#endif /* WIRELESS_EXT */	



/*---------------------  Static Functions  --------------------------*/
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)

static int vntwusb_found1(struct usb_interface *intf, const struct usb_device_id *id);
static void vntwusb_disconnect(struct usb_interface *intf);

#else

static void* vntwusb_found1(struct usb_device *udev, UINT interface, const struct usb_device_id *id);
static void vntwusb_disconnect(struct usb_device *udev, void *ptr);
#endif
static struct net_device_stats *device_get_stats(struct net_device *dev);
static int  device_open(struct net_device *dev);
static int  device_xmit(struct sk_buff *skb, struct net_device *dev);
static void device_set_multi(struct net_device *dev);
static int  device_close(struct net_device *dev);
static int  device_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);

static BOOL device_init_registers(PSDevice pDevice, DEVICE_INIT_TYPE InitType);
static BOOL device_init_defrag_cb(PSDevice pDevice);
static void device_init_diversity_timer(PSDevice pDevice);
static int  device_dma0_tx_80211(struct sk_buff *skb, struct net_device *dev);

static int  ethtool_ioctl(struct net_device *dev, void *useraddr);
static void device_free_tx_bufs(PSDevice pDevice);
static void device_free_rx_bufs(PSDevice pDevice);
static void device_free_int_bufs(PSDevice pDevice);
static void device_free_frag_bufs(PSDevice pDevice);
static BOOL device_alloc_bufs(PSDevice pDevice);

//2007-1107-01<Add>by MikeLiu
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
static void usb_device_reset(PSDevice pDevice);
#endif



/*---------------------  Export Variables  --------------------------*/

/*---------------------  Export Functions  --------------------------*/


static void
device_set_options(PSDevice pDevice) {
    
    BYTE    abyBroadcastAddr[U_ETHER_ADDR_LEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
    BYTE    abySNAP_RFC1042[U_ETHER_ADDR_LEN] = {0xAA, 0xAA, 0x03, 0x00, 0x00, 0x00};
    BYTE    abySNAP_Bridgetunnel[U_ETHER_ADDR_LEN] = {0xAA, 0xAA, 0x03, 0x00, 0x00, 0xF8};
    
    
    memcpy(pDevice->abyBroadcastAddr, abyBroadcastAddr, U_ETHER_ADDR_LEN);
    memcpy(pDevice->abySNAP_RFC1042, abySNAP_RFC1042, U_ETHER_ADDR_LEN);
    memcpy(pDevice->abySNAP_Bridgetunnel, abySNAP_Bridgetunnel, U_ETHER_ADDR_LEN);        
    
    pDevice->cbTD = TX_DESC_DEF0;
    pDevice->cbRD = RX_DESC_DEF0;
    pDevice->uChannel = CHANNEL_DEF;
    pDevice->wRTSThreshold = RTS_THRESH_DEF;
    pDevice->wFragmentationThreshold = FRAG_THRESH_DEF;
    pDevice->byShortRetryLimit = SHORT_RETRY_DEF;
    pDevice->byLongRetryLimit = LONG_RETRY_DEF;
    pDevice->wMaxTransmitMSDULifetime = DEFAULT_MSDU_LIFETIME;
    pDevice->byShortPreamble = PREAMBLE_TYPE_DEF;
    pDevice->ePSMode = PS_MODE_DEF;
    pDevice->b11hEnable = X80211h_MODE_DEF;    
    pDevice->eOPMode = OP_MODE_DEF;    
    pDevice->uConnectionRate = DATA_RATE_DEF;
    if (pDevice->uConnectionRate < RATE_AUTO) pDevice->bFixRate = TRUE;    
    pDevice->byBBType = BBP_TYPE_DEF;
    pDevice->byPacketType = pDevice->byBBType;
    pDevice->byAutoFBCtrl = AUTO_FB_0;
    pDevice->bUpdateBBVGA = TRUE;
    pDevice->byFOETuning = 0;
    pDevice->byAutoPwrTunning = 0;
    pDevice->wCTSDuration = 0;
    pDevice->byPreambleType = 0;    
    pDevice->bExistSWNetAddr = FALSE;
//    pDevice->bDiversityRegCtlON = TRUE;
    pDevice->bDiversityRegCtlON = FALSE;    
}        


static VOID device_init_diversity_timer(PSDevice pDevice) {
    
    init_timer(&pDevice->TimerSQ3Tmax1);
    pDevice->TimerSQ3Tmax1.data = (ULONG)pDevice;
    pDevice->TimerSQ3Tmax1.function = (TimerFunction)TimerSQ3CallBack;
    pDevice->TimerSQ3Tmax1.expires = RUN_AT(HZ);    
    
    init_timer(&pDevice->TimerSQ3Tmax2);
    pDevice->TimerSQ3Tmax2.data = (ULONG)pDevice;
    pDevice->TimerSQ3Tmax2.function = (TimerFunction)TimerSQ3CallBack;
    pDevice->TimerSQ3Tmax2.expires = RUN_AT(HZ);    

    init_timer(&pDevice->TimerSQ3Tmax3);