drivers/staging/otus/wrap_usb.c

/*
 * Copyright (c) 2007-2008 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
/*                                                                      */
/*  Module Name : wrap_usb.c                                            */
/*                                                                      */
/*  Abstract                                                            */
/*     This module contains wrapper functions for USB management        */
/*                                                                      */
/*  NOTES                                                               */
/*     Platform dependent.                                              */
/*                                                                      */
/************************************************************************/

#include "oal_dt.h"
#include "usbdrv.h"

#include <linux/netlink.h>

#if WIRELESS_EXT > 12
#include <net/iw_handler.h>
#endif

extern void zfLnxInitUsbTxQ(zdev_t* dev);
extern void zfLnxInitUsbRxQ(zdev_t* dev);
extern u32_t zfLnxSubmitRegInUrb(zdev_t *dev);
u32_t zfLnxUsbOut(zdev_t* dev, u8_t *hdr, u16_t hdrlen, u8_t *snap, u16_t snapLen,
        u8_t *tail, u16_t tailLen, zbuf_t *buf, u16_t offset);
u32_t zfLnxUsbWriteReg(zdev_t* dev, u32_t* cmd, u16_t cmdLen);

void zfwUsbRegisterCallBack(zdev_t* dev, struct zfCbUsbFuncTbl *zfUsbFunc) {
    struct usbdrv_private *macp = (struct usbdrv_private *)dev->priv;

    macp->usbCbFunctions.zfcbUsbRecv = zfUsbFunc->zfcbUsbRecv;
    macp->usbCbFunctions.zfcbUsbRegIn = zfUsbFunc->zfcbUsbRegIn;
    macp->usbCbFunctions.zfcbUsbOutComplete = zfUsbFunc->zfcbUsbOutComplete;

    return;
}

u32_t zfwUsbGetFreeTxQSize(zdev_t* dev)
{
    struct usbdrv_private *macp = (struct usbdrv_private *)dev->priv;
    u32_t        freeTxQSize;
    unsigned long irqFlag;
    //zmw_declare_for_critical_section();

    //zmw_enter_critical_section(dev);
    spin_lock_irqsave(&(((struct usbdrv_private *)(dev->priv))->cs_lock), irqFlag);

    freeTxQSize = ZM_MAX_TX_BUF_NUM - macp->TxBufCnt;

    //zmw_leave_critical_section(dev);
    spin_unlock_irqrestore(&(((struct usbdrv_private *)(dev->priv))->cs_lock), irqFlag);

    return freeTxQSize;
}

u32_t zfwUsbGetMaxTxQSize(zdev_t* dev)
{
    return ZM_MAX_TX_BUF_NUM;
}

u32_t zfwUsbEnableIntEpt(zdev_t *dev, u8_t endpt)
{
    /* Initialize USB TxQ */
    zfLnxInitUsbTxQ(dev);

    /* Initialize USB RxQ */
    zfLnxInitUsbRxQ(dev);

    /* Initialize USB Register In URB */
    //zfwUsbSubmitRegIn(dev);
    /* Initialize USB Register In URB */
    zfLnxSubmitRegInUrb(dev);

    return 0;
}

int zfwUsbEnableRxEpt(zdev_t* dev, u8_t endpt)
{
    return 0;
}

u32_t zfwUsbSubmitControl(zdev_t* dev, u8_t req, u16_t value, u16_t index, void *data, u32_t size)
{
    int result = 0;
    u32_t ret = 0;
    struct usbdrv_private *macp = (struct usbdrv_private *)dev->priv;
    u8_t* buf;

    if (size > 0)
    {
        buf = kmalloc(size, GFP_KERNEL);
        memcpy(buf, (u8_t*)data, size);
    }
    else
    {
        buf = NULL;
    }

#if 0
    printk(KERN_ERR "req = 0x%02x\n", req);
    printk(KERN_ERR "value = 0x%04x\n", value);
    printk(KERN_ERR "index = 0x%04x\n", index);
    printk(KERN_ERR "data = 0x%lx\n", (u32_t) data);
    printk(KERN_ERR "size = %ld\n", size);
#endif

    result = usb_control_msg(macp->udev, usb_sndctrlpipe(macp->udev, 0),
            req, USB_DIR_OUT | 0x40, value, index, buf, size, HZ);

    if (result < 0)
    {
        printk("zfwUsbSubmitControl() failed, result=0x%x\n", result);
        ret = 1;
    }
    kfree(buf);

    return ret;
}

void zfwUsbCmd(zdev_t* dev, u8_t endpt, u32_t* cmd, u16_t cmdLen)
{
    struct usbdrv_private *macp = (struct usbdrv_private *)dev->priv;
    u32_t ret;

    //MPUsbCommand(dev, endpt, cmd, cmdLen);
    ret = zfLnxUsbWriteReg(dev, cmd, cmdLen);

    /* if zfLnxUsbWriteReg() return error, free and allocate urb, resend again */
    if (ret != 0)
    {
        usb_free_urb(macp->RegOutUrb);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) /* tune me! */
        macp->RegOutUrb = usb_alloc_urb(0, GFP_ATOMIC);
#else
        macp->RegOutUrb = usb_alloc_urb(0);
#endif
        ret = zfLnxUsbWriteReg(dev, cmd, cmdLen);
    }
}

u32_t zfwUsbSend(zdev_t* dev, u8_t endpt, u8_t *hdr, u16_t hdrlen, u8_t *snap, u16_t snapLen,
                u8_t *tail, u16_t tailLen, zbuf_t *buf, u16_t offset)
{
    u32_t status;

#ifdef ZM_CONFIG_BIG_ENDIAN
    u32_t ii = 0;
    u16_t *pc = NULL;

    pc = (u16_t *)hdr;
    for(ii=0; ii<(hdrlen>>1); ii++)
    {
        pc[ii] = cpu_to_le16(pc[ii]);
    }

    pc = (u16_t *)snap;
    for(ii=0; ii<(snapLen>>1); ii++)
    {
        pc[ii] = cpu_to_le16(pc[ii]);
    }

    pc = (u16_t *)tail;
    for(ii=0; ii<(tailLen>>1); ii++)
    {
        pc[ii] = cpu_to_le16(pc[ii]);
    }
#endif

    status = zfLnxUsbOut(dev, hdr, hdrlen, snap, snapLen, tail, tailLen, buf, offset);
    if ( status == 0 )
    {
        return 0;
    }
    else
    {
        return 1;
    }
}

/* Leave an empty line below to remove warning message on some compiler */