drivers/staging/bcm/InterfaceDld.c - linux - Git at Google

 #include "headers.h"

 #ifndef BCM_SHM_INTERFACE

 int InterfaceFileDownload( PVOID arg,
                         struct file *flp,
                         unsigned int on_chip_loc)
 {
     char            *buff=NULL;
    // unsigned int    reg=0;
     mm_segment_t    oldfs={0};
     int             errno=0, len=0 /*,is_config_file = 0*/;
     loff_t          pos=0;
 	PS_INTERFACE_ADAPTER psIntfAdapter = (PS_INTERFACE_ADAPTER)arg;
 	//PMINI_ADAPTER Adapter = psIntfAdapter->psAdapter;

     buff=(PCHAR)kmalloc(MAX_TRANSFER_CTRL_BYTE_USB, GFP_KERNEL);
     if(!buff)
     {
         return -ENOMEM;
     }
     while(1)
     {
         oldfs=get_fs(); set_fs(get_ds());
         len=vfs_read(flp, (void __force __user *)buff, MAX_TRANSFER_CTRL_BYTE_USB, &pos);
         set_fs(oldfs);
         if(len<=0)
         {
             if(len<0)
             {
                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "len < 0");
                 errno=len;
             }
             else
             {
                 errno = 0;
                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Got end of file!");
             }
             break;
         }
         //BCM_DEBUG_PRINT_BUFFER(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, buff, MAX_TRANSFER_CTRL_BYTE_USB);
         errno = InterfaceWRM(psIntfAdapter, on_chip_loc, buff, len) ;
 		if(errno)
 		{
             BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_PRINTK, 0, 0, "WRM Failed! status: %d", errno);
 			break;

 		}
         on_chip_loc+=MAX_TRANSFER_CTRL_BYTE_USB;
 	}/* End of for(;;)*/

 	bcm_kfree(buff);
     return errno;
 }

 int InterfaceFileReadbackFromChip( PVOID arg,
                         struct file *flp,
                         unsigned int on_chip_loc)
 {
     char            *buff=NULL, *buff_readback=NULL;
     unsigned int    reg=0;
     mm_segment_t    oldfs={0};
     int             errno=0, len=0, is_config_file = 0;
     loff_t          pos=0;
     static int fw_down = 0;
 	INT				Status = STATUS_SUCCESS;
 	PS_INTERFACE_ADAPTER psIntfAdapter = (PS_INTERFACE_ADAPTER)arg;

     buff=(PCHAR)kmalloc(MAX_TRANSFER_CTRL_BYTE_USB, GFP_DMA);
     buff_readback=(PCHAR)kmalloc(MAX_TRANSFER_CTRL_BYTE_USB , GFP_DMA);
     if(!buff || !buff_readback)
     {
         bcm_kfree(buff);
         bcm_kfree(buff_readback);

         return -ENOMEM;
     }

 	is_config_file = (on_chip_loc == CONFIG_BEGIN_ADDR)? 1:0;

 	memset(buff_readback, 0, MAX_TRANSFER_CTRL_BYTE_USB);
 	memset(buff, 0, MAX_TRANSFER_CTRL_BYTE_USB);
     while(1)
     {
         oldfs=get_fs(); set_fs(get_ds());
         len=vfs_read(flp, (void __force __user *)buff, MAX_TRANSFER_CTRL_BYTE_USB, &pos);
         set_fs(oldfs);
         fw_down++;
         if(len<=0)
         {
             if(len<0)
             {
                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "len < 0");
                 errno=len;
             }
             else
             {
                 errno = 0;
                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Got end of file!");
             }
             break;
         }


 		Status = InterfaceRDM(psIntfAdapter, on_chip_loc, buff_readback, len);
 		if(Status)
 		{
             BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "RDM of len %d Failed! %d", len, reg);
 			goto exit;
 		}
 		reg++;
         if((len-sizeof(unsigned int))<4)
         {
             if(memcmp(buff_readback, buff, len))
             {
                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Firmware Download is not proper %d", fw_down);
 				BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT,DBG_LVL_ALL,"Length is: %d",len);
 				Status = -EIO;
 				goto exit;
             }
         }
         else
         {
             len-=4;
             while(len)
             {
                 if(*(unsigned int*)&buff_readback[len] != *(unsigned int *)&buff[len])
                 {
                     BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Firmware Download is not proper %d", fw_down);
                     BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Val from Binary %x, Val From Read Back %x ", *(unsigned int *)&buff[len], *(unsigned int*)&buff_readback[len]);
                     BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "len =%x!!!", len);
 					Status = -EIO;
 					goto exit;
                 }
                 len-=4;
             }
         }
         on_chip_loc+=MAX_TRANSFER_CTRL_BYTE_USB;
     }/* End of while(1)*/
 exit:
     bcm_kfree(buff);
     bcm_kfree(buff_readback);
 	return Status;
 }

 static int bcm_download_config_file(PMINI_ADAPTER Adapter,
 								FIRMWARE_INFO *psFwInfo)
 {
 	int retval = STATUS_SUCCESS;
 	B_UINT32 value = 0;

 	if(Adapter->pstargetparams == NULL)
     {
         if((Adapter->pstargetparams =
             kmalloc(sizeof(STARGETPARAMS), GFP_KERNEL)) == NULL)
         {
             return -ENOMEM;
         }
     }
 	if(psFwInfo->u32FirmwareLength != sizeof(STARGETPARAMS))
 	{
 		return -EIO;
 	}
 	retval = copy_from_user(Adapter->pstargetparams,
 			psFwInfo->pvMappedFirmwareAddress, psFwInfo->u32FirmwareLength);
 	if(retval)
 	{
 		bcm_kfree (Adapter->pstargetparams);
 		Adapter->pstargetparams = NULL;
 		return -EFAULT;
 	}
 	/* Parse the structure and then Download the Firmware */
 	beceem_parse_target_struct(Adapter);

 	//Initializing the NVM.
 	BcmInitNVM(Adapter);

 	retval = InitLedSettings (Adapter);

 	if(retval)
 	{
 		BCM_DEBUG_PRINT (Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "INIT LED Failed\n");
 		return retval;
 	}

 	if(Adapter->LEDInfo.led_thread_running & BCM_LED_THREAD_RUNNING_ACTIVELY)
 	{
 		Adapter->LEDInfo.bLedInitDone = FALSE;
 		Adapter->DriverState = DRIVER_INIT;
 		wake_up(&Adapter->LEDInfo.notify_led_event);
 	}

 	if(Adapter->LEDInfo.led_thread_running & BCM_LED_THREAD_RUNNING_ACTIVELY)
 	{
 		Adapter->DriverState = FW_DOWNLOAD;
 		wake_up(&Adapter->LEDInfo.notify_led_event);
 	}

 	/* Initialize the DDR Controller */
 	retval = ddr_init(Adapter);
 	if(retval)
 	{
 		BCM_DEBUG_PRINT (Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "DDR Init Failed\n");
 		return retval;
 	}

 	value = 0;
 	wrmalt(Adapter, EEPROM_CAL_DATA_INTERNAL_LOC - 4, &value, sizeof(value));
 	wrmalt(Adapter, EEPROM_CAL_DATA_INTERNAL_LOC - 8, &value, sizeof(value));

 	if(Adapter->eNVMType == NVM_FLASH)
 	{
 		retval = PropagateCalParamsFromFlashToMemory(Adapter);
 		if(retval)
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"propagaion of cal param failed with status :%d", retval);
 			return retval;
 		}
 	}


 	retval =buffDnldVerify(Adapter,(PUCHAR)Adapter->pstargetparams,sizeof(STARGETPARAMS),CONFIG_BEGIN_ADDR);

 	if(retval)
 	{
 		BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "configuration file not downloaded properly");
 	}
 	else
 		Adapter->bCfgDownloaded = TRUE;


 	return retval;
 }
 #if 0
 static int bcm_download_buffer(PMINI_ADAPTER Adapter,
 	unsigned char *mappedbuffer, unsigned int u32FirmwareLength,
 	unsigned long u32StartingAddress)
 {
     char            *buff=NULL;
     unsigned int    len = 0;
 	int 			retval = STATUS_SUCCESS;
 	buff = kzalloc(MAX_TRANSFER_CTRL_BYTE_USB, GFP_KERNEL);

 	len = u32FirmwareLength;

 	while(u32FirmwareLength)
 	{
 		len = MIN_VAL (u32FirmwareLength, MAX_TRANSFER_CTRL_BYTE_USB);
 		if(STATUS_SUCCESS != (retval = copy_from_user(buff,
 				(unsigned char *)mappedbuffer, len)))
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "copy_from_user failed\n");
 			break;
 		}
 		retval = wrm (Adapter, u32StartingAddress, buff, len);
 		if(retval)
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "wrm failed\n");
 			break;
 		}
 		u32StartingAddress 	+= len;
 		u32FirmwareLength  	-= len;
 		mappedbuffer	   	+=len;
 	}
 	bcm_kfree(buff);
 	return retval;
 }
 #endif
 static int bcm_compare_buff_contents(unsigned char *readbackbuff,
 	unsigned char *buff,unsigned int len)
 {
 	int retval = STATUS_SUCCESS;
     PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
     if((len-sizeof(unsigned int))<4)
 	{
 		if(memcmp(readbackbuff , buff, len))
 		{
 			retval=-EINVAL;
 		}
 	}
 	else
 	{
 		len-=4;
 		while(len)
 		{
 			if(*(unsigned int*)&readbackbuff[len] !=
 					*(unsigned int *)&buff[len])
 			{
 				BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Firmware Download is not proper");
 				BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Val from Binary %x, Val From Read Back %x ", *(unsigned int *)&buff[len], *(unsigned int*)&readbackbuff[len]);
 				BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "len =%x!!!", len);
 				retval=-EINVAL;
 				break;
 			}
 			len-=4;
 		}
 	}
 	return retval;
 }
 #if 0
 static int bcm_buffer_readback(PMINI_ADAPTER Adapter,
 	unsigned char *mappedbuffer, unsigned int u32FirmwareLength,
 	unsigned long u32StartingAddress)
 {
 	unsigned char *buff = NULL;
 	unsigned char *readbackbuff = NULL;
 	unsigned int  len = u32FirmwareLength;
 	int retval = STATUS_SUCCESS;

     buff=(unsigned char *)kzalloc(MAX_TRANSFER_CTRL_BYTE_USB, GFP_KERNEL);
 	if(NULL == buff)
 		return -ENOMEM;
 	readbackbuff =  (unsigned char *)kzalloc(MAX_TRANSFER_CTRL_BYTE_USB,
 					GFP_KERNEL);
 	if(NULL == readbackbuff)
 	{
 		bcm_kfree(buff);
 		return -ENOMEM;
 	}
 	while (u32FirmwareLength && !retval)
 	{
 		len = MIN_VAL (u32FirmwareLength, MAX_TRANSFER_CTRL_BYTE_USB);

 		/* read from the appl buff and then read from the target, compare */
 		if(STATUS_SUCCESS != (retval = copy_from_user(buff,
 				(unsigned char *)mappedbuffer, len)))
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "copy_from_user failed\n");
 			break;
 		}
 		retval = rdm (Adapter, u32StartingAddress, readbackbuff, len);
 		if(retval)
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "rdm failed\n");
 			break;
 		}

 		if (STATUS_SUCCESS !=
 			(retval = bcm_compare_buff_contents (readbackbuff, buff, len)))
 		{
 			break;
 		}
 		u32StartingAddress 	+= len;
 		u32FirmwareLength  	-= len;
 		mappedbuffer	   	+=len;
 	}/* end of while (u32FirmwareLength && !retval) */
 	bcm_kfree(buff);
 	bcm_kfree(readbackbuff);
 	return retval;
 }
 #endif
 int bcm_ioctl_fw_download(PMINI_ADAPTER Adapter, FIRMWARE_INFO *psFwInfo)
 {
 	int retval = STATUS_SUCCESS;
 	PUCHAR buff = NULL;

 	/*  Config File is needed for the Driver to download the Config file and
 		Firmware. Check for the Config file to be first to be sent from the
 		Application
 	*/
 	atomic_set (&Adapter->uiMBupdate, FALSE);
 	if(!Adapter->bCfgDownloaded &&
 		psFwInfo->u32StartingAddress != CONFIG_BEGIN_ADDR)
 	{
 		/*Can't Download Firmware.*/
 		BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"Download the config File first\n");
 		return -EINVAL;
 	}

 	/* If Config File, Finish the DDR Settings and then Download CFG File */
     if(psFwInfo->u32StartingAddress == CONFIG_BEGIN_ADDR)
     {
 		retval = bcm_download_config_file (Adapter, psFwInfo);
 	}
 	else
 	{

 		buff = (PUCHAR)kzalloc(psFwInfo->u32FirmwareLength,GFP_KERNEL);
 		if(buff==NULL)
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"Failed in allocation memory");
 			return -ENOMEM;
 		}
 		retval = copy_from_user(buff,psFwInfo->pvMappedFirmwareAddress, psFwInfo->u32FirmwareLength);
 		if(retval != STATUS_SUCCESS)
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "copying buffer from user space failed");
 			retval = -EFAULT;
 			goto error ;
 		}

 		#if 0
 		retval = bcm_download_buffer(Adapter,
 				(unsigned char *)psFwInfo->pvMappedFirmwareAddress,
 				psFwInfo->u32FirmwareLength, psFwInfo->u32StartingAddress);
 		if(retval != STATUS_SUCCESS)
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "User space buffer download fails....");
 		}
 		retval = bcm_buffer_readback (Adapter,
 				(unsigned char *)psFwInfo->pvMappedFirmwareAddress,
 				psFwInfo->u32FirmwareLength, psFwInfo->u32StartingAddress);

 		if(retval != STATUS_SUCCESS)
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "read back verifier failed ....");
 		}
 		#endif
 		retval = buffDnldVerify(Adapter,
 					buff,
 					psFwInfo->u32FirmwareLength,
 					psFwInfo->u32StartingAddress);
 		if(retval != STATUS_SUCCESS)
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"f/w download failed status :%d", retval);
 			goto error;
 		}
 	}
 error:
 	bcm_kfree(buff);
 	return retval;
 }

 static INT buffDnld(PMINI_ADAPTER Adapter, PUCHAR mappedbuffer, UINT u32FirmwareLength,
 		ULONG u32StartingAddress)
 {

 	unsigned int	len = 0;
 	int retval = STATUS_SUCCESS;
 	len = u32FirmwareLength;

 	while(u32FirmwareLength)
 	{
 		len = MIN_VAL (u32FirmwareLength, MAX_TRANSFER_CTRL_BYTE_USB);
 		retval = wrm (Adapter, u32StartingAddress, mappedbuffer, len);
 		if(retval)
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "wrm failed with status :%d", retval);
 			break;
 		}
 		u32StartingAddress	+= len;
 		u32FirmwareLength	-= len;
 		mappedbuffer		+=len;
 	}
 	return retval;

 }

 static INT buffRdbkVerify(PMINI_ADAPTER Adapter,
 			PUCHAR mappedbuffer, UINT u32FirmwareLength,
 			ULONG u32StartingAddress)
 {
 	PUCHAR readbackbuff = NULL;
 	UINT len = u32FirmwareLength;
 	INT retval = STATUS_SUCCESS;

 	readbackbuff = (PUCHAR)kzalloc(MAX_TRANSFER_CTRL_BYTE_USB,GFP_KERNEL);
 	if(NULL == readbackbuff)
 	{
 		BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "MEMORY ALLOCATION FAILED");
 		return -ENOMEM;
 	}
 	while (u32FirmwareLength && !retval)
 	{

 		len = MIN_VAL (u32FirmwareLength, MAX_TRANSFER_CTRL_BYTE_USB);

 		retval = rdm (Adapter, u32StartingAddress, readbackbuff, len);
 		if(retval)
 		{
 			BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "rdm failed with status %d" ,retval);
 			break;
 		}

 		if (STATUS_SUCCESS != (retval = bcm_compare_buff_contents (readbackbuff, mappedbuffer, len)))
 		{
 			break;
 		}
 		u32StartingAddress 	+= len;
 		u32FirmwareLength  	-= len;
 		mappedbuffer	   	+=len;
 	}/* end of while (u32FirmwareLength && !retval) */
 	bcm_kfree(readbackbuff);
 	return retval;
 }

 INT buffDnldVerify(PMINI_ADAPTER Adapter, unsigned char *mappedbuffer, unsigned int u32FirmwareLength,
 		unsigned long u32StartingAddress)
 {
 	INT status = STATUS_SUCCESS;

 	status = buffDnld(Adapter,mappedbuffer,u32FirmwareLength,u32StartingAddress);
 	if(status != STATUS_SUCCESS)
 	{
 		BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"Buffer download failed");
 		goto error;
 	}

 	status= buffRdbkVerify(Adapter,mappedbuffer,u32FirmwareLength,u32StartingAddress);
 	if(status != STATUS_SUCCESS)
 	{
 		BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"Buffer readback verifier failed");
 		goto error;
 	}
 error:
 	return status;
 }

 #endif
	#include "headers.h"

	#ifndef BCM_SHM_INTERFACE

	int InterfaceFileDownload( PVOID arg,
	struct file *flp,
	unsigned int on_chip_loc)
	{
	char *buff=NULL;
	// unsigned int reg=0;
	mm_segment_t oldfs={0};
	int errno=0, len=0 /,is_config_file = 0/;
	loff_t pos=0;
	PS_INTERFACE_ADAPTER psIntfAdapter = (PS_INTERFACE_ADAPTER)arg;
	//PMINI_ADAPTER Adapter = psIntfAdapter->psAdapter;

	buff=(PCHAR)kmalloc(MAX_TRANSFER_CTRL_BYTE_USB, GFP_KERNEL);
	if(!buff)
	{
	return -ENOMEM;
	}
	while(1)
	{
	oldfs=get_fs(); set_fs(get_ds());
	len=vfs_read(flp, (void __force __user *)buff, MAX_TRANSFER_CTRL_BYTE_USB, &pos);
	set_fs(oldfs);
	if(len<=0)
	{
	if(len<0)
	{
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "len < 0");
	errno=len;
	}
	else
	{
	errno = 0;
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Got end of file!");
	}
	break;
	}
	//BCM_DEBUG_PRINT_BUFFER(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, buff, MAX_TRANSFER_CTRL_BYTE_USB);
	errno = InterfaceWRM(psIntfAdapter, on_chip_loc, buff, len) ;
	if(errno)
	{
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_PRINTK, 0, 0, "WRM Failed! status: %d", errno);
	break;

	}
	on_chip_loc+=MAX_TRANSFER_CTRL_BYTE_USB;
	}/* End of for(;;)*/

	bcm_kfree(buff);
	return errno;
	}

	int InterfaceFileReadbackFromChip( PVOID arg,
	struct file *flp,
	unsigned int on_chip_loc)
	{
	char buff=NULL, buff_readback=NULL;
	unsigned int reg=0;
	mm_segment_t oldfs={0};
	int errno=0, len=0, is_config_file = 0;
	loff_t pos=0;
	static int fw_down = 0;
	INT Status = STATUS_SUCCESS;
	PS_INTERFACE_ADAPTER psIntfAdapter = (PS_INTERFACE_ADAPTER)arg;

	buff=(PCHAR)kmalloc(MAX_TRANSFER_CTRL_BYTE_USB, GFP_DMA);
	buff_readback=(PCHAR)kmalloc(MAX_TRANSFER_CTRL_BYTE_USB , GFP_DMA);
	if(!buff \|\| !buff_readback)
	{
	bcm_kfree(buff);
	bcm_kfree(buff_readback);

	return -ENOMEM;
	}

	is_config_file = (on_chip_loc == CONFIG_BEGIN_ADDR)? 1:0;

	memset(buff_readback, 0, MAX_TRANSFER_CTRL_BYTE_USB);
	memset(buff, 0, MAX_TRANSFER_CTRL_BYTE_USB);
	while(1)
	{
	oldfs=get_fs(); set_fs(get_ds());
	len=vfs_read(flp, (void __force __user *)buff, MAX_TRANSFER_CTRL_BYTE_USB, &pos);
	set_fs(oldfs);
	fw_down++;
	if(len<=0)
	{
	if(len<0)
	{
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "len < 0");
	errno=len;
	}
	else
	{
	errno = 0;
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Got end of file!");
	}
	break;
	}


	Status = InterfaceRDM(psIntfAdapter, on_chip_loc, buff_readback, len);
	if(Status)
	{
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "RDM of len %d Failed! %d", len, reg);
	goto exit;
	}
	reg++;
	if((len-sizeof(unsigned int))<4)
	{
	if(memcmp(buff_readback, buff, len))
	{
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Firmware Download is not proper %d", fw_down);
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT,DBG_LVL_ALL,"Length is: %d",len);
	Status = -EIO;
	goto exit;
	}
	}
	else
	{
	len-=4;
	while(len)
	{
	if((unsigned int)&buff_readback[len] != (unsigned int )&buff[len])
	{
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Firmware Download is not proper %d", fw_down);
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Val from Binary %x, Val From Read Back %x ", (unsigned int )&buff[len], (unsigned int)&buff_readback[len]);
	BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "len =%x!!!", len);
	Status = -EIO;
	goto exit;
	}
	len-=4;
	}
	}
	on_chip_loc+=MAX_TRANSFER_CTRL_BYTE_USB;
	}/* End of while(1)*/
	exit:
	bcm_kfree(buff);
	bcm_kfree(buff_readback);
	return Status;
	}

	static int bcm_download_config_file(PMINI_ADAPTER Adapter,
	FIRMWARE_INFO *psFwInfo)
	{
	int retval = STATUS_SUCCESS;
	B_UINT32 value = 0;

	if(Adapter->pstargetparams == NULL)
	{
	if((Adapter->pstargetparams =
	kmalloc(sizeof(STARGETPARAMS), GFP_KERNEL)) == NULL)
	{
	return -ENOMEM;
	}
	}
	if(psFwInfo->u32FirmwareLength != sizeof(STARGETPARAMS))
	{
	return -EIO;
	}
	retval = copy_from_user(Adapter->pstargetparams,
	psFwInfo->pvMappedFirmwareAddress, psFwInfo->u32FirmwareLength);
	if(retval)
	{
	bcm_kfree (Adapter->pstargetparams);
	Adapter->pstargetparams = NULL;
	return -EFAULT;
	}
	/* Parse the structure and then Download the Firmware */
	beceem_parse_target_struct(Adapter);

	//Initializing the NVM.
	BcmInitNVM(Adapter);

	retval = InitLedSettings (Adapter);

	if(retval)
	{
	BCM_DEBUG_PRINT (Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "INIT LED Failed\n");
	return retval;
	}

	if(Adapter->LEDInfo.led_thread_running & BCM_LED_THREAD_RUNNING_ACTIVELY)
	{
	Adapter->LEDInfo.bLedInitDone = FALSE;
	Adapter->DriverState = DRIVER_INIT;
	wake_up(&Adapter->LEDInfo.notify_led_event);
	}

	if(Adapter->LEDInfo.led_thread_running & BCM_LED_THREAD_RUNNING_ACTIVELY)
	{
	Adapter->DriverState = FW_DOWNLOAD;
	wake_up(&Adapter->LEDInfo.notify_led_event);
	}

	/* Initialize the DDR Controller */
	retval = ddr_init(Adapter);
	if(retval)
	{
	BCM_DEBUG_PRINT (Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "DDR Init Failed\n");
	return retval;
	}

	value = 0;
	wrmalt(Adapter, EEPROM_CAL_DATA_INTERNAL_LOC - 4, &value, sizeof(value));
	wrmalt(Adapter, EEPROM_CAL_DATA_INTERNAL_LOC - 8, &value, sizeof(value));

	if(Adapter->eNVMType == NVM_FLASH)
	{
	retval = PropagateCalParamsFromFlashToMemory(Adapter);
	if(retval)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"propagaion of cal param failed with status :%d", retval);
	return retval;
	}
	}


	retval =buffDnldVerify(Adapter,(PUCHAR)Adapter->pstargetparams,sizeof(STARGETPARAMS),CONFIG_BEGIN_ADDR);

	if(retval)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "configuration file not downloaded properly");
	}
	else
	Adapter->bCfgDownloaded = TRUE;


	return retval;
	}
	#if 0
	static int bcm_download_buffer(PMINI_ADAPTER Adapter,
	unsigned char *mappedbuffer, unsigned int u32FirmwareLength,
	unsigned long u32StartingAddress)
	{
	char *buff=NULL;
	unsigned int len = 0;
	int retval = STATUS_SUCCESS;
	buff = kzalloc(MAX_TRANSFER_CTRL_BYTE_USB, GFP_KERNEL);

	len = u32FirmwareLength;

	while(u32FirmwareLength)
	{
	len = MIN_VAL (u32FirmwareLength, MAX_TRANSFER_CTRL_BYTE_USB);
	if(STATUS_SUCCESS != (retval = copy_from_user(buff,
	(unsigned char *)mappedbuffer, len)))
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "copy_from_user failed\n");
	break;
	}
	retval = wrm (Adapter, u32StartingAddress, buff, len);
	if(retval)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "wrm failed\n");
	break;
	}
	u32StartingAddress += len;
	u32FirmwareLength -= len;
	mappedbuffer +=len;
	}
	bcm_kfree(buff);
	return retval;
	}
	#endif
	static int bcm_compare_buff_contents(unsigned char *readbackbuff,
	unsigned char *buff,unsigned int len)
	{
	int retval = STATUS_SUCCESS;
	PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
	if((len-sizeof(unsigned int))<4)
	{
	if(memcmp(readbackbuff , buff, len))
	{
	retval=-EINVAL;
	}
	}
	else
	{
	len-=4;
	while(len)
	{
	if((unsigned int)&readbackbuff[len] !=
	(unsigned int )&buff[len])
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Firmware Download is not proper");
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "Val from Binary %x, Val From Read Back %x ", (unsigned int )&buff[len], (unsigned int)&readbackbuff[len]);
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "len =%x!!!", len);
	retval=-EINVAL;
	break;
	}
	len-=4;
	}
	}
	return retval;
	}
	#if 0
	static int bcm_buffer_readback(PMINI_ADAPTER Adapter,
	unsigned char *mappedbuffer, unsigned int u32FirmwareLength,
	unsigned long u32StartingAddress)
	{
	unsigned char *buff = NULL;
	unsigned char *readbackbuff = NULL;
	unsigned int len = u32FirmwareLength;
	int retval = STATUS_SUCCESS;

	buff=(unsigned char *)kzalloc(MAX_TRANSFER_CTRL_BYTE_USB, GFP_KERNEL);
	if(NULL == buff)
	return -ENOMEM;
	readbackbuff = (unsigned char *)kzalloc(MAX_TRANSFER_CTRL_BYTE_USB,
	GFP_KERNEL);
	if(NULL == readbackbuff)
	{
	bcm_kfree(buff);
	return -ENOMEM;
	}
	while (u32FirmwareLength && !retval)
	{
	len = MIN_VAL (u32FirmwareLength, MAX_TRANSFER_CTRL_BYTE_USB);

	/* read from the appl buff and then read from the target, compare */
	if(STATUS_SUCCESS != (retval = copy_from_user(buff,
	(unsigned char *)mappedbuffer, len)))
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "copy_from_user failed\n");
	break;
	}
	retval = rdm (Adapter, u32StartingAddress, readbackbuff, len);
	if(retval)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "rdm failed\n");
	break;
	}

	if (STATUS_SUCCESS !=
	(retval = bcm_compare_buff_contents (readbackbuff, buff, len)))
	{
	break;
	}
	u32StartingAddress += len;
	u32FirmwareLength -= len;
	mappedbuffer +=len;
	}/* end of while (u32FirmwareLength && !retval) */
	bcm_kfree(buff);
	bcm_kfree(readbackbuff);
	return retval;
	}
	#endif
	int bcm_ioctl_fw_download(PMINI_ADAPTER Adapter, FIRMWARE_INFO *psFwInfo)
	{
	int retval = STATUS_SUCCESS;
	PUCHAR buff = NULL;

	/* Config File is needed for the Driver to download the Config file and
	Firmware. Check for the Config file to be first to be sent from the
	Application
	*/
	atomic_set (&Adapter->uiMBupdate, FALSE);
	if(!Adapter->bCfgDownloaded &&
	psFwInfo->u32StartingAddress != CONFIG_BEGIN_ADDR)
	{
	/Can't Download Firmware./
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"Download the config File first\n");
	return -EINVAL;
	}

	/* If Config File, Finish the DDR Settings and then Download CFG File */
	if(psFwInfo->u32StartingAddress == CONFIG_BEGIN_ADDR)
	{
	retval = bcm_download_config_file (Adapter, psFwInfo);
	}
	else
	{

	buff = (PUCHAR)kzalloc(psFwInfo->u32FirmwareLength,GFP_KERNEL);
	if(buff==NULL)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"Failed in allocation memory");
	return -ENOMEM;
	}
	retval = copy_from_user(buff,psFwInfo->pvMappedFirmwareAddress, psFwInfo->u32FirmwareLength);
	if(retval != STATUS_SUCCESS)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "copying buffer from user space failed");
	retval = -EFAULT;
	goto error ;
	}

	#if 0
	retval = bcm_download_buffer(Adapter,
	(unsigned char *)psFwInfo->pvMappedFirmwareAddress,
	psFwInfo->u32FirmwareLength, psFwInfo->u32StartingAddress);
	if(retval != STATUS_SUCCESS)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "User space buffer download fails....");
	}
	retval = bcm_buffer_readback (Adapter,
	(unsigned char *)psFwInfo->pvMappedFirmwareAddress,
	psFwInfo->u32FirmwareLength, psFwInfo->u32StartingAddress);

	if(retval != STATUS_SUCCESS)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "read back verifier failed ....");
	}
	#endif
	retval = buffDnldVerify(Adapter,
	buff,
	psFwInfo->u32FirmwareLength,
	psFwInfo->u32StartingAddress);
	if(retval != STATUS_SUCCESS)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"f/w download failed status :%d", retval);
	goto error;
	}
	}
	error:
	bcm_kfree(buff);
	return retval;
	}

	static INT buffDnld(PMINI_ADAPTER Adapter, PUCHAR mappedbuffer, UINT u32FirmwareLength,
	ULONG u32StartingAddress)
	{

	unsigned int len = 0;
	int retval = STATUS_SUCCESS;
	len = u32FirmwareLength;

	while(u32FirmwareLength)
	{
	len = MIN_VAL (u32FirmwareLength, MAX_TRANSFER_CTRL_BYTE_USB);
	retval = wrm (Adapter, u32StartingAddress, mappedbuffer, len);
	if(retval)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "wrm failed with status :%d", retval);
	break;
	}
	u32StartingAddress += len;
	u32FirmwareLength -= len;
	mappedbuffer +=len;
	}
	return retval;

	}

	static INT buffRdbkVerify(PMINI_ADAPTER Adapter,
	PUCHAR mappedbuffer, UINT u32FirmwareLength,
	ULONG u32StartingAddress)
	{
	PUCHAR readbackbuff = NULL;
	UINT len = u32FirmwareLength;
	INT retval = STATUS_SUCCESS;

	readbackbuff = (PUCHAR)kzalloc(MAX_TRANSFER_CTRL_BYTE_USB,GFP_KERNEL);
	if(NULL == readbackbuff)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "MEMORY ALLOCATION FAILED");
	return -ENOMEM;
	}
	while (u32FirmwareLength && !retval)
	{

	len = MIN_VAL (u32FirmwareLength, MAX_TRANSFER_CTRL_BYTE_USB);

	retval = rdm (Adapter, u32StartingAddress, readbackbuff, len);
	if(retval)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL, "rdm failed with status %d" ,retval);
	break;
	}

	if (STATUS_SUCCESS != (retval = bcm_compare_buff_contents (readbackbuff, mappedbuffer, len)))
	{
	break;
	}
	u32StartingAddress += len;
	u32FirmwareLength -= len;
	mappedbuffer +=len;
	}/* end of while (u32FirmwareLength && !retval) */
	bcm_kfree(readbackbuff);
	return retval;
	}

	INT buffDnldVerify(PMINI_ADAPTER Adapter, unsigned char *mappedbuffer, unsigned int u32FirmwareLength,
	unsigned long u32StartingAddress)
	{
	INT status = STATUS_SUCCESS;

	status = buffDnld(Adapter,mappedbuffer,u32FirmwareLength,u32StartingAddress);
	if(status != STATUS_SUCCESS)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"Buffer download failed");
	goto error;
	}

	status= buffRdbkVerify(Adapter,mappedbuffer,u32FirmwareLength,u32StartingAddress);
	if(status != STATUS_SUCCESS)
	{
	BCM_DEBUG_PRINT(Adapter,DBG_TYPE_INITEXIT, MP_INIT, DBG_LVL_ALL,"Buffer readback verifier failed");
	goto error;
	}
	error:
	return status;
	}

	#endif