drivers/staging/vt6656/firmware.c

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  *
  20  * File: baseband.c
  21  *
  22  * Purpose: Implement functions to access baseband
  23  *
  24  * Author: Yiching Chen
  25  *
  26  * Date: May 20, 2004
  27  *
  28  * Functions:
  29  *
  30  * Revision History:
  31  *
  32  */
  33
  34 #include <linux/compiler.h>
  35 #include "firmware.h"
  36 #include "usbpipe.h"
  37
  38 static int msglevel = MSG_LEVEL_INFO;
  39 /* static int msglevel = MSG_LEVEL_DEBUG; */
  40
  41 #define FIRMWARE_VERSION        0x133           /* version 1.51 */
  42 #define FIRMWARE_NAME           "vntwusb.fw"
  43
  44 #define FIRMWARE_CHUNK_SIZE     0x400
  45
  46 int FIRMWAREbDownload(struct vnt_private *pDevice)
  47 {
  48         struct device *dev = &pDevice->usb->dev;
  49         const struct firmware *fw;
  50         int NdisStatus;
  51         void *pBuffer = NULL;
  52         bool result = false;
  53         u16 wLength;
  54         int ii, rc;
  55
  56         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Download firmware\n");
  57
  58         rc = request_firmware(&fw, FIRMWARE_NAME, dev);
  59         if (rc) {
  60                 dev_err(dev, "firmware file %s request failed (%d)\n",
  61                         FIRMWARE_NAME, rc);
  62                         goto out;
  63         }
  64
  65         pBuffer = kmalloc(FIRMWARE_CHUNK_SIZE, GFP_KERNEL);
  66         if (!pBuffer)
  67                 goto out;
  68
  69         for (ii = 0; ii < fw->size; ii += FIRMWARE_CHUNK_SIZE) {
  70                 wLength = min_t(int, fw->size - ii, FIRMWARE_CHUNK_SIZE);
  71                 memcpy(pBuffer, fw->data + ii, wLength);
  72
  73                 NdisStatus = vnt_control_out(pDevice,
  74                                                 0,
  75                                                 0x1200+ii,
  76                                                 0x0000,
  77                                                 wLength,
  78                                                 pBuffer);
  79
  80                 DBG_PRT(MSG_LEVEL_DEBUG,
  81                         KERN_INFO"Download firmware...%d %zu\n", ii, fw->size);
  82                 if (NdisStatus != STATUS_SUCCESS)
  83                         goto free_fw;
  84         }
  85
  86         result = true;
  87 free_fw:
  88         release_firmware(fw);
  89
  90 out:
  91         kfree(pBuffer);
  92
  93         return result;
  94 }
  95 MODULE_FIRMWARE(FIRMWARE_NAME);
  96
  97 int FIRMWAREbBrach2Sram(struct vnt_private *pDevice)
  98 {
  99         int NdisStatus;
 100
 101         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Branch to Sram\n");
 102
 103         NdisStatus = vnt_control_out(pDevice,
 104                                         1,
 105                                         0x1200,
 106                                         0x0000,
 107                                         0,
 108                                         NULL);
 109         if (NdisStatus != STATUS_SUCCESS)
 110                 return false;
 111         else
 112                 return true;
 113 }
 114
 115 int FIRMWAREbCheckVersion(struct vnt_private *pDevice)
 116 {
 117         int ntStatus;
 118
 119         ntStatus = vnt_control_in(pDevice,
 120                                         MESSAGE_TYPE_READ,
 121                                         0,
 122                                         MESSAGE_REQUEST_VERSION,
 123                                         2,
 124                                         (u8 *) &(pDevice->wFirmwareVersion));
 125
 126         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Firmware Version [%04x]\n",
 127                                                 pDevice->wFirmwareVersion);
 128         if (ntStatus != STATUS_SUCCESS) {
 129                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Firmware Invalid.\n");
 130                 return false;
 131         }
 132         if (pDevice->wFirmwareVersion == 0xFFFF) {
 133                 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"In Loader.\n");
 134                 return false;
 135         }
 136         DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Firmware Version [%04x]\n",
 137                                                 pDevice->wFirmwareVersion);
 138         if (pDevice->wFirmwareVersion < FIRMWARE_VERSION) {
 139                 /* branch to loader for download new firmware */
 140                 FIRMWAREbBrach2Sram(pDevice);
 141                 return false;
 142         }
 143         return true;
 144 }