Staging: add rt3070 wireless driver

This is the Ralink RT3070 driver from the company that does horrible
things like reading a config file from /etc.  However, the driver that
is currently under development from the wireless development community
is not working at all yet, so distros and users are using this version
instead (quite common hardware on a lot of netbook machines).

So here is this driver, for now, until the wireless developers get a
"clean" version into the main tree, or until this version is cleaned up
sufficiently to move out of the staging tree.

Ported to the Linux build system, fixed lots of build issues, forward
ported to the current kernel version, and other minor cleanups were all
done by me.

Cc: Linux wireless <linux-wireless@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 218 insertions, 0 deletions

diff --git a/drivers/staging/rt3070/common/rtusb_data.c b/drivers/staging/rt3070/common/rtusb_data.c
new file mode 100644
index 00000000000..521309a2ae5
--- /dev/null
+++ b/drivers/staging/rt3070/common/rtusb_data.c
@@ -0,0 +1,218 @@
+/*
+ *************************************************************************
+ * Ralink Tech Inc.
+ * 5F., No.36, Taiyuan St., Jhubei City,
+ * Hsinchu County 302,
+ * Taiwan, R.O.C.
+ *
+ * (c) Copyright 2002-2007, Ralink Technology, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify  *
+ * it under the terms of the GNU General Public License as published by  *
+ * the Free Software Foundation; either version 2 of the License, or     *
+ * (at your option) any later version.                                   *
+ *                                                                       *
+ * This program is distributed in the hope that it will be useful,       *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ * GNU General Public License for more details.                          *
+ *                                                                       *
+ * You should have received a copy of the GNU General Public License     *
+ * along with this program; if not, write to the                         *
+ * Free Software Foundation, Inc.,                                       *
+ * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
+ *                                                                       *
+ *************************************************************************
+
+	Module Name:
+	rtusb_data.c
+
+	Abstract:
+	Ralink USB driver Tx/Rx functions.
+
+	Revision History:
+	Who         When          What
+	--------    ----------    ----------------------------------------------
+	Jan            03-25-2006    created
+
+*/
+#include	"../rt_config.h"
+
+extern  UCHAR Phy11BGNextRateUpward[]; // defined in mlme.c
+extern UCHAR	EpToQueue[];
+
+
+VOID REPORT_AMSDU_FRAMES_TO_LLC(
+	IN	PRTMP_ADAPTER	pAd,
+	IN	PUCHAR			pData,
+	IN	ULONG			DataSize)
+{
+	PNDIS_PACKET	pPacket;
+	UINT			nMSDU;
+	struct			sk_buff *pSkb;
+
+	nMSDU = 0;
+	/* allocate a rx packet */
+	pSkb = dev_alloc_skb(RX_BUFFER_AGGRESIZE);
+	pPacket = (PNDIS_PACKET)OSPKT_TO_RTPKT(pSkb);
+	if (pSkb)
+	{
+
+		/* convert 802.11 to 802.3 packet */
+		pSkb->dev = get_netdev_from_bssid(pAd, BSS0);
+		RTMP_SET_PACKET_SOURCE(pPacket, PKTSRC_NDIS);
+		deaggregate_AMSDU_announce(pAd, pPacket, pData, DataSize);
+	}
+	else
+	{
+		DBGPRINT(RT_DEBUG_ERROR,("Can't allocate skb\n"));
+	}
+}
+
+NDIS_STATUS	RTUSBFreeDescriptorRequest(
+	IN	PRTMP_ADAPTER	pAd,
+	IN	UCHAR			BulkOutPipeId,
+	IN	UINT32			NumberRequired)
+{
+//	UCHAR			FreeNumber = 0;
+//	UINT			Index;
+	NDIS_STATUS		Status = NDIS_STATUS_FAILURE;
+	unsigned long   IrqFlags;
+	HT_TX_CONTEXT	*pHTTXContext;
+
+
+	pHTTXContext = &pAd->TxContext[BulkOutPipeId];
+	RTMP_IRQ_LOCK(&pAd->TxContextQueueLock[BulkOutPipeId], IrqFlags);
+	if ((pHTTXContext->CurWritePosition < pHTTXContext->NextBulkOutPosition) && ((pHTTXContext->CurWritePosition + NumberRequired + LOCAL_TXBUF_SIZE) > pHTTXContext->NextBulkOutPosition))
+	{
+
+		RTUSB_SET_BULK_FLAG(pAd, (fRTUSB_BULK_OUT_DATA_NORMAL << BulkOutPipeId));
+	}
+	else if ((pHTTXContext->CurWritePosition == 8) && (pHTTXContext->NextBulkOutPosition < (NumberRequired + LOCAL_TXBUF_SIZE)))
+	{
+		RTUSB_SET_BULK_FLAG(pAd, (fRTUSB_BULK_OUT_DATA_NORMAL << BulkOutPipeId));
+	}
+	else if (pHTTXContext->bCurWriting == TRUE)
+	{
+		DBGPRINT(RT_DEBUG_TRACE,("RTUSBFreeD c3 --> QueIdx=%d, CWPos=%ld, NBOutPos=%ld!\n", BulkOutPipeId, pHTTXContext->CurWritePosition, pHTTXContext->NextBulkOutPosition));
+		RTUSB_SET_BULK_FLAG(pAd, (fRTUSB_BULK_OUT_DATA_NORMAL << BulkOutPipeId));
+	}
+	else
+	{
+		Status = NDIS_STATUS_SUCCESS;
+	}
+	RTMP_IRQ_UNLOCK(&pAd->TxContextQueueLock[BulkOutPipeId], IrqFlags);
+
+
+	return (Status);
+}
+
+
+NDIS_STATUS RTUSBFreeDescriptorRelease(
+	IN RTMP_ADAPTER *pAd,
+	IN UCHAR		BulkOutPipeId)
+{
+	unsigned long   IrqFlags;
+	HT_TX_CONTEXT	*pHTTXContext;
+
+	pHTTXContext = &pAd->TxContext[BulkOutPipeId];
+	RTMP_IRQ_LOCK(&pAd->TxContextQueueLock[BulkOutPipeId], IrqFlags);
+	pHTTXContext->bCurWriting = FALSE;
+	RTMP_IRQ_UNLOCK(&pAd->TxContextQueueLock[BulkOutPipeId], IrqFlags);
+
+	return (NDIS_STATUS_SUCCESS);
+}
+
+
+BOOLEAN	RTUSBNeedQueueBackForAgg(
+	IN RTMP_ADAPTER *pAd,
+	IN UCHAR		BulkOutPipeId)
+{
+	unsigned long   IrqFlags;
+	HT_TX_CONTEXT	*pHTTXContext;
+	BOOLEAN			needQueBack = FALSE;
+
+	pHTTXContext = &pAd->TxContext[BulkOutPipeId];
+
+	RTMP_IRQ_LOCK(&pAd->TxContextQueueLock[BulkOutPipeId], IrqFlags);
+	if ((pHTTXContext->IRPPending == TRUE)  /*&& (pAd->TxSwQueue[BulkOutPipeId].Number == 0) */)
+	{
+		if ((pHTTXContext->CurWritePosition < pHTTXContext->ENextBulkOutPosition) &&
+			(((pHTTXContext->ENextBulkOutPosition+MAX_AGGREGATION_SIZE) < MAX_TXBULK_LIMIT) || (pHTTXContext->CurWritePosition > MAX_AGGREGATION_SIZE)))
+		{
+			needQueBack = TRUE;
+		}
+		else if ((pHTTXContext->CurWritePosition > pHTTXContext->ENextBulkOutPosition) &&
+				 ((pHTTXContext->ENextBulkOutPosition + MAX_AGGREGATION_SIZE) < pHTTXContext->CurWritePosition))
+		{
+			needQueBack = TRUE;
+		}
+	}
+	RTMP_IRQ_UNLOCK(&pAd->TxContextQueueLock[BulkOutPipeId], IrqFlags);
+
+	return needQueBack;
+
+}
+
+
+/*
+	========================================================================
+
+	Routine Description:
+
+	Arguments:
+
+	Return Value:
+
+	IRQL =
+
+	Note:
+
+	========================================================================
+*/
+VOID	RTUSBRejectPendingPackets(
+	IN	PRTMP_ADAPTER	pAd)
+{
+	UCHAR			Index;
+	PQUEUE_ENTRY	pEntry;
+	PNDIS_PACKET	pPacket;
+	PQUEUE_HEADER	pQueue;
+
+
+	for (Index = 0; Index < 4; Index++)
+	{
+		NdisAcquireSpinLock(&pAd->TxSwQueueLock[Index]);
+		while (pAd->TxSwQueue[Index].Head != NULL)
+		{
+			pQueue = (PQUEUE_HEADER) &(pAd->TxSwQueue[Index]);
+			pEntry = RemoveHeadQueue(pQueue);
+			pPacket = QUEUE_ENTRY_TO_PACKET(pEntry);
+			RELEASE_NDIS_PACKET(pAd, pPacket, NDIS_STATUS_FAILURE);
+		}
+		NdisReleaseSpinLock(&pAd->TxSwQueueLock[Index]);
+
+	}
+
+}
+
+VOID RTMPWriteTxInfo(
+	IN	PRTMP_ADAPTER	pAd,
+	IN	PTXINFO_STRUC 	pTxInfo,
+	IN	  USHORT		USBDMApktLen,
+	IN	  BOOLEAN		bWiv,
+	IN	  UCHAR			QueueSel,
+	IN	  UCHAR			NextValid,
+	IN	  UCHAR			TxBurst)
+{
+	pTxInfo->USBDMATxPktLen = USBDMApktLen;
+	pTxInfo->QSEL = QueueSel;
+	if (QueueSel != FIFO_EDCA)
+		DBGPRINT(RT_DEBUG_TRACE, ("====> QueueSel != FIFO_EDCA<============\n"));
+	pTxInfo->USBDMANextVLD = FALSE; //NextValid;  // Need to check with Jan about this.
+	pTxInfo->USBDMATxburst = TxBurst;
+	pTxInfo->WIV = bWiv;
+	pTxInfo->SwUseLastRound = 0;
+	pTxInfo->rsv = 0;
+	pTxInfo->rsv2 = 0;
+}
+