drivers/staging/otus/wrap_usb.c

   1 /*
   2  * Copyright (c) 2007-2008 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 /*                                                                      */
  17 /*  Module Name : wrap_usb.c                                            */
  18 /*                                                                      */
  19 /*  Abstract                                                            */
  20 /*     This module contains wrapper functions for USB management        */
  21 /*                                                                      */
  22 /*  NOTES                                                               */
  23 /*     Platform dependent.                                              */
  24 /*                                                                      */
  25 /************************************************************************/
  26
  27 #include "oal_dt.h"
  28 #include "usbdrv.h"
  29
  30 #include <linux/netlink.h>
  31 #include <linux/slab.h>
  32 #include <net/iw_handler.h>
  33
  34 extern void zfLnxInitUsbTxQ(zdev_t *dev);
  35 extern void zfLnxInitUsbRxQ(zdev_t *dev);
  36 extern u32_t zfLnxSubmitRegInUrb(zdev_t *dev);
  37 u32_t zfLnxUsbOut(zdev_t *dev, u8_t *hdr, u16_t hdrlen, u8_t *snap,
  38                 u16_t snapLen, u8_t *tail, u16_t tailLen, zbuf_t *buf,
  39                 u16_t offset);
  40 u32_t zfLnxUsbWriteReg(zdev_t *dev, u32_t *cmd, u16_t cmdLen);
  41
  42 void zfwUsbRegisterCallBack(zdev_t *dev, struct zfCbUsbFuncTbl *zfUsbFunc)
  43 {
  44         struct usbdrv_private *macp = dev->ml_priv;
  45
  46         macp->usbCbFunctions.zfcbUsbRecv = zfUsbFunc->zfcbUsbRecv;
  47         macp->usbCbFunctions.zfcbUsbRegIn = zfUsbFunc->zfcbUsbRegIn;
  48         macp->usbCbFunctions.zfcbUsbOutComplete = zfUsbFunc->zfcbUsbOutComplete;
  49
  50         return;
  51 }
  52
  53 u32_t zfwUsbGetFreeTxQSize(zdev_t *dev)
  54 {
  55         struct usbdrv_private *macp = dev->ml_priv;
  56         u32_t           freeTxQSize;
  57         unsigned long irqFlag;
  58         /* zmw_declare_for_critical_section();  */
  59
  60         /* zmw_enter_critical_section(dev);     */
  61         spin_lock_irqsave(&macp->cs_lock, irqFlag);
  62
  63         freeTxQSize = ZM_MAX_TX_BUF_NUM - macp->TxBufCnt;
  64
  65         /* zmw_leave_critical_section(dev);     */
  66         spin_unlock_irqrestore(&macp->cs_lock, irqFlag);
  67
  68         return freeTxQSize;
  69 }
  70
  71 u32_t zfwUsbGetMaxTxQSize(zdev_t *dev)
  72 {
  73         return ZM_MAX_TX_BUF_NUM;
  74 }
  75
  76 u32_t zfwUsbEnableIntEpt(zdev_t *dev, u8_t endpt)
  77 {
  78         /* Initialize USB TxQ */
  79         zfLnxInitUsbTxQ(dev);
  80
  81         /* Initialize USB RxQ */
  82         zfLnxInitUsbRxQ(dev);
  83
  84         /* Initialize USB Register In URB */
  85         /* zfwUsbSubmitRegIn(dev);      */
  86         /* Initialize USB Register In URB */
  87         zfLnxSubmitRegInUrb(dev);
  88
  89         return 0;
  90 }
  91
  92 int zfwUsbEnableRxEpt(zdev_t *dev, u8_t endpt)
  93 {
  94         return 0;
  95 }
  96
  97 u32_t zfwUsbSubmitControl(zdev_t *dev, u8_t req, u16_t value, u16_t index,
  98                          void *data, u32_t size)
  99 {
 100         int result = 0;
 101         u32_t ret = 0;
 102         struct usbdrv_private *macp = dev->ml_priv;
 103         u8_t *buf;
 104
 105         if (size > 0) {
 106                 buf = kmalloc(size, GFP_KERNEL);
 107                 if (buf == NULL) {
 108                         pr_err("zfwUsbSubmitControl() failed, "
 109                                   "kmalloc() returned NULL\n");
 110                         return 1;
 111                 }
 112                 memcpy(buf, (u8_t *)data, size);
 113         } else
 114                 buf = NULL;
 115
 116 #if 0
 117         printk(KERN_ERR "req = 0x%02x\n", req);
 118         printk(KERN_ERR "value = 0x%04x\n", value);
 119         printk(KERN_ERR "index = 0x%04x\n", index);
 120         printk(KERN_ERR "data = 0x%lx\n", (u32_t) data);
 121         printk(KERN_ERR "size = %ld\n", size);
 122 #endif
 123
 124         result = usb_control_msg(macp->udev, usb_sndctrlpipe(macp->udev, 0),
 125                         req, USB_DIR_OUT | 0x40, value, index, buf, size, HZ);
 126
 127         if (result < 0) {
 128                 printk(KERN_ERR "zfwUsbSubmitControl() failed, result = 0x%x\n",
 129                         result);
 130                 ret = 1;
 131         }
 132         kfree(buf);
 133
 134         return ret;
 135 }
 136
 137 void zfwUsbCmd(zdev_t *dev, u8_t endpt, u32_t *cmd, u16_t cmdLen)
 138 {
 139         struct usbdrv_private *macp = dev->ml_priv;
 140         u32_t ret;
 141
 142         /* MPUsbCommand(dev, endpt, cmd, cmdLen);       */
 143         ret = zfLnxUsbWriteReg(dev, cmd, cmdLen);
 144
 145         /*
 146          * if zfLnxUsbWriteReg() return error, free and allocate urb,
 147          * resend again
 148          */
 149         if (ret != 0) {
 150                 usb_free_urb(macp->RegOutUrb);
 151                 macp->RegOutUrb = usb_alloc_urb(0, GFP_ATOMIC);
 152                 ret = zfLnxUsbWriteReg(dev, cmd, cmdLen);
 153         }
 154 }
 155
 156 u32_t zfwUsbSend(zdev_t *dev, u8_t endpt, u8_t *hdr, u16_t hdrlen, u8_t *snap,
 157                         u16_t snapLen,  u8_t *tail, u16_t tailLen,
 158                         zbuf_t *buf, u16_t offset)
 159 {
 160         u32_t status;
 161
 162 #ifdef ZM_CONFIG_BIG_ENDIAN
 163         u32_t ii = 0;
 164         u16_t *pc = NULL;
 165
 166         pc = (u16_t *)hdr;
 167         for (ii = 0; ii < (hdrlen >> 1); ii++)
 168                 pc[ii] = cpu_to_le16(pc[ii]);
 169
 170         pc = (u16_t *)snap;
 171         for (ii = 0; ii < (snapLen >> 1); ii++)
 172                 pc[ii] = cpu_to_le16(pc[ii]);
 173
 174         pc = (u16_t *)tail;
 175         for (ii = 0; ii < (tailLen>>1); ii++)
 176                 pc[ii] = cpu_to_le16(pc[ii]);
 177 #endif
 178
 179         status = zfLnxUsbOut(dev, hdr, hdrlen, snap, snapLen, tail, tailLen,
 180                                 buf, offset);
 181         if (status == 0)
 182                 return 0;
 183         else
 184                 return 1;
 185 }
 186
 187 /* Leave an empty line below to remove warning message on some compiler */