Release 4.7 drivers/staging/vt6655/device_main.c

/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * File: device_main.c
 *
 * Purpose: driver entry for initial, open, close, tx and rx.
 *
 * Author: Lyndon Chen
 *
 * Date: Jan 8, 2003
 *
 * Functions:
 *
 *   vt6655_probe - module initial (insmod) driver entry
 *   vt6655_remove - module remove entry
 *   device_free_info - device structure resource free function
 *   device_print_info - print out resource
 *   device_rx_srv - rx service function
 *   device_alloc_rx_buf - rx buffer pre-allocated function
 *   device_free_tx_buf - free tx buffer function
 *   device_init_rd0_ring- initial rd dma0 ring
 *   device_init_rd1_ring- initial rd dma1 ring
 *   device_init_td0_ring- initial tx dma0 ring buffer
 *   device_init_td1_ring- initial tx dma1 ring buffer
 *   device_init_registers- initial MAC & BBP & RF internal registers.
 *   device_init_rings- initial tx/rx ring buffer
 *   device_free_rings- free all allocated ring buffer
 *   device_tx_srv- tx interrupt service function
 *
 * Revision History:
 */

#undef __NO_VERSION__

#include <linux/file.h>
#include "device.h"
#include "card.h"
#include "channel.h"
#include "baseband.h"
#include "mac.h"
#include "power.h"
#include "rxtx.h"
#include "dpc.h"
#include "rf.h"
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/slab.h>

/*---------------------  Static Definitions -------------------------*/
/*
 * Define module options
 */
MODULE_AUTHOR("VIA Networking Technologies, Inc., <lyndonchen@vntek.com.tw>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("VIA Networking Solomon-A/B/G Wireless LAN Adapter Driver");


#define DEVICE_PARAM(N, D)


#define RX_DESC_MIN0     16

#define RX_DESC_MAX0     128

#define RX_DESC_DEF0     32
DEVICE_PARAM(RxDescriptors0, "Number of receive descriptors0");


#define RX_DESC_MIN1     16

#define RX_DESC_MAX1     128

#define RX_DESC_DEF1     32
DEVICE_PARAM(RxDescriptors1, "Number of receive descriptors1");


#define TX_DESC_MIN0     16

#define TX_DESC_MAX0     128

#define TX_DESC_DEF0     32
DEVICE_PARAM(TxDescriptors0, "Number of transmit descriptors0");


#define TX_DESC_MIN1     16

#define TX_DESC_MAX1     128

#define TX_DESC_DEF1     64
DEVICE_PARAM(TxDescriptors1, "Number of transmit descriptors1");


#define INT_WORKS_DEF   20

#define INT_WORKS_MIN   10

#define INT_WORKS_MAX   64

DEVICE_PARAM(int_works, "Number of packets per interrupt services");


#define RTS_THRESH_DEF     2347


#define FRAG_THRESH_DEF     2346


#define SHORT_RETRY_MIN     0

#define SHORT_RETRY_MAX     31

#define SHORT_RETRY_DEF     8

DEVICE_PARAM(ShortRetryLimit, "Short frame retry limits");


#define LONG_RETRY_MIN     0

#define LONG_RETRY_MAX     15

#define LONG_RETRY_DEF     4

DEVICE_PARAM(LongRetryLimit, "long frame retry limits");

/* BasebandType[] baseband type selected
   0: indicate 802.11a type
   1: indicate 802.11b type
   2: indicate 802.11g type
*/

#define BBP_TYPE_MIN     0

#define BBP_TYPE_MAX     2

#define BBP_TYPE_DEF     2

DEVICE_PARAM(BasebandType, "baseband type");

/*
 * Static vars definitions
 */

static const struct pci_device_id vt6655_pci_id_table[] = {
	{ PCI_VDEVICE(VIA, 0x3253) },
	{ 0, }
};

/*---------------------  Static Functions  --------------------------*/

static int  vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent);
static void device_free_info(struct vnt_private *priv);
static void device_print_info(struct vnt_private *priv);

static void device_init_rd0_ring(struct vnt_private *priv);
static void device_init_rd1_ring(struct vnt_private *priv);
static void device_init_td0_ring(struct vnt_private *priv);
static void device_init_td1_ring(struct vnt_private *priv);

static int  device_rx_srv(struct vnt_private *priv, unsigned int idx);
static int  device_tx_srv(struct vnt_private *priv, unsigned int idx);
static bool device_alloc_rx_buf(struct vnt_private *, struct vnt_rx_desc *);
static void device_init_registers(struct vnt_private *priv);
static void device_free_tx_buf(struct vnt_private *, struct vnt_tx_desc *);
static void device_free_td0_ring(struct vnt_private *priv);
static void device_free_td1_ring(struct vnt_private *priv);
static void device_free_rd0_ring(struct vnt_private *priv);
static void device_free_rd1_ring(struct vnt_private *priv);
static void device_free_rings(struct vnt_private *priv);

/*---------------------  Export Variables  --------------------------*/

/*---------------------  Export Functions  --------------------------*/



static void vt6655_remove(struct pci_dev *pcid)
{
	struct vnt_private *priv = pci_get_drvdata(pcid);

	if (priv == NULL)
		return;
	device_free_info(priv);
}

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static void device_get_options(struct vnt_private *priv)
{
	struct vnt_options *opts = &priv->opts;

	opts->rx_descs0 = RX_DESC_DEF0;
	opts->rx_descs1 = RX_DESC_DEF1;
	opts->tx_descs[0] = TX_DESC_DEF0;
	opts->tx_descs[1] = TX_DESC_DEF1;
	opts->int_works = INT_WORKS_DEF;

	opts->short_retry = SHORT_RETRY_DEF;
	opts->long_retry = LONG_RETRY_DEF;
	opts->bbp_type = BBP_TYPE_DEF;
}

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static void

device_set_options(struct vnt_private *priv)
{
	priv->byShortRetryLimit = priv->opts.short_retry;
	priv->byLongRetryLimit = priv->opts.long_retry;
	priv->byBBType = priv->opts.bbp_type;
	priv->byPacketType = priv->byBBType;
	priv->byAutoFBCtrl = AUTO_FB_0;
	priv->bUpdateBBVGA = true;
	priv->byPreambleType = 0;

	pr_debug(" byShortRetryLimit= %d\n", (int)priv->byShortRetryLimit);
	pr_debug(" byLongRetryLimit= %d\n", (int)priv->byLongRetryLimit);
	pr_debug(" byPreambleType= %d\n", (int)priv->byPreambleType);
	pr_debug(" byShortPreamble= %d\n", (int)priv->byShortPreamble);
	pr_debug(" byBBType= %d\n", (int)priv->byBBType);
}

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/*
 * Initialisation of MAC & BBP registers
 */



static void device_init_registers(struct vnt_private *priv)
{
	unsigned long flags;
	unsigned int ii;
	unsigned char byValue;
	unsigned char byCCKPwrdBm = 0;
	unsigned char byOFDMPwrdBm = 0;

	MACbShutdown(priv);
	BBvSoftwareReset(priv);

	/* Do MACbSoftwareReset in MACvInitialize */
	MACbSoftwareReset(priv);

	priv->bAES = false;

	/* Only used in 11g type, sync with ERP IE */
	priv->bProtectMode = false;

	priv->bNonERPPresent = false;
	priv->bBarkerPreambleMd = false;
	priv->wCurrentRate = RATE_1M;
	priv->byTopOFDMBasicRate = RATE_24M;
	priv->byTopCCKBasicRate = RATE_1M;

	/* init MAC */
	MACvInitialize(priv);

	/* Get Local ID */
	VNSvInPortB(priv->PortOffset + MAC_REG_LOCALID, &priv->byLocalID);

	spin_lock_irqsave(&priv->lock, flags);

	SROMvReadAllContents(priv->PortOffset, priv->abyEEPROM);

	spin_unlock_irqrestore(&priv->lock, flags);

	/* Get Channel range */
	priv->byMinChannel = 1;
	priv->byMaxChannel = CB_MAX_CHANNEL;

	/* Get Antena */
	byValue = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_ANTENNA);
	if (byValue & EEP_ANTINV)
		priv->bTxRxAntInv = true;
	else
		priv->bTxRxAntInv = false;

	byValue &= (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);
	/* if not set default is All */
	if (byValue == 0)
		byValue = (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN);

	if (byValue == (EEP_ANTENNA_AUX | EEP_ANTENNA_MAIN)) {
		priv->byAntennaCount = 2;
		priv->byTxAntennaMode = ANT_B;
		priv->dwTxAntennaSel = 1;
		priv->dwRxAntennaSel = 1;

		if (priv->bTxRxAntInv)
			priv->byRxAntennaMode = ANT_A;
		else
			priv->byRxAntennaMode = ANT_B;
	} else  {
		priv->byAntennaCount = 1;
		priv->dwTxAntennaSel = 0;
		priv->dwRxAntennaSel = 0;

		if (byValue & EEP_ANTENNA_AUX) {
			priv->byTxAntennaMode = ANT_A;

			if (priv->bTxRxAntInv)
				priv->byRxAntennaMode = ANT_B;
			else
				priv->byRxAntennaMode = ANT_A;
		} else {
			priv->byTxAntennaMode = ANT_B;

			if (priv->bTxRxAntInv)
				priv->byRxAntennaMode = ANT_A;
			else
				priv->byRxAntennaMode = ANT_B;
		}
	}

	/* Set initial antenna mode */
	BBvSetTxAntennaMode(priv, priv->byTxAntennaMode);
	BBvSetRxAntennaMode(priv, priv->byRxAntennaMode);

	/* zonetype initial */
	priv->byOriginalZonetype = priv->abyEEPROM[EEP_OFS_ZONETYPE];

	if (!priv->bZoneRegExist)
		priv->byZoneType = priv->abyEEPROM[EEP_OFS_ZONETYPE];

	pr_debug("priv->byZoneType = %x\n", priv->byZoneType);

	/* Init RF module */
	RFbInit(priv);

	/* Get Desire Power Value */
	priv->byCurPwr = 0xFF;
	priv->byCCKPwr = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_PWR_CCK);
	priv->byOFDMPwrG = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_PWR_OFDMG);

	/* Load power Table */
	for (ii = 0; ii < CB_MAX_CHANNEL_24G; ii++) {
		priv->abyCCKPwrTbl[ii + 1] =
			SROMbyReadEmbedded(priv->PortOffset,
					   (unsigned char)(ii + EEP_OFS_CCK_PWR_TBL));
		if (priv->abyCCKPwrTbl[ii + 1] == 0)
			priv->abyCCKPwrTbl[ii+1] = priv->byCCKPwr;

		priv->abyOFDMPwrTbl[ii + 1] =
			SROMbyReadEmbedded(priv->PortOffset,
					   (unsigned char)(ii + EEP_OFS_OFDM_PWR_TBL));
		if (priv->abyOFDMPwrTbl[ii + 1] == 0)
			priv->abyOFDMPwrTbl[ii + 1] = priv->byOFDMPwrG;

		priv->abyCCKDefaultPwr[ii + 1] = byCCKPwrdBm;
		priv->abyOFDMDefaultPwr[ii + 1] = byOFDMPwrdBm;
	}

	/* recover 12,13 ,14channel for EUROPE by 11 channel */
	for (ii = 11; ii < 14; ii++) {
		priv->abyCCKPwrTbl[ii] = priv->abyCCKPwrTbl[10];
		priv->abyOFDMPwrTbl[ii] = priv->abyOFDMPwrTbl[10];
	}

	/* Load OFDM A Power Table */
	for (ii = 0; ii < CB_MAX_CHANNEL_5G; ii++) {
		priv->abyOFDMPwrTbl[ii + CB_MAX_CHANNEL_24G + 1] =
			SROMbyReadEmbedded(priv->PortOffset,
					   (unsigned char)(ii + EEP_OFS_OFDMA_PWR_TBL));

		priv->abyOFDMDefaultPwr[ii + CB_MAX_CHANNEL_24G + 1] =
			SROMbyReadEmbedded(priv->PortOffset,
					   (unsigned char)(ii + EEP_OFS_OFDMA_PWR_dBm));
	}

	if (priv->byLocalID > REV_ID_VT3253_B1) {
		MACvSelectPage1(priv->PortOffset);

		VNSvOutPortB(priv->PortOffset + MAC_REG_MSRCTL + 1,
			     (MSRCTL1_TXPWR | MSRCTL1_CSAPAREN));

		MACvSelectPage0(priv->PortOffset);
	}

	/* use relative tx timeout and 802.11i D4 */
	MACvWordRegBitsOn(priv->PortOffset,
			  MAC_REG_CFG, (CFG_TKIPOPT | CFG_NOTXTIMEOUT));

	/* set performance parameter by registry */
	MACvSetShortRetryLimit(priv, priv->byShortRetryLimit);
	MACvSetLongRetryLimit(priv, priv->byLongRetryLimit);

	/* reset TSF counter */
	VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
	/* enable TSF counter */
	VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);

	/* initialize BBP registers */
	BBbVT3253Init(priv);

	if (priv->bUpdateBBVGA) {
		priv->byBBVGACurrent = priv->abyBBVGA[0];
		priv->byBBVGANew = priv->byBBVGACurrent;
		BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
	}

	BBvSetRxAntennaMode(priv, priv->byRxAntennaMode);
	BBvSetTxAntennaMode(priv, priv->byTxAntennaMode);

	/* Set BB and packet type at the same time. */
	/* Set Short Slot Time, xIFS, and RSPINF. */
	priv->wCurrentRate = RATE_54M;

	priv->bRadioOff = false;

	priv->byRadioCtl = SROMbyReadEmbedded(priv->PortOffset,
						 EEP_OFS_RADIOCTL);
	priv->bHWRadioOff = false;

	if (priv->byRadioCtl & EEP_RADIOCTL_ENABLE) {
		/* Get GPIO */
		MACvGPIOIn(priv->PortOffset, &priv->byGPIO);

		if (((priv->byGPIO & GPIO0_DATA) &&
		     !(priv->byRadioCtl & EEP_RADIOCTL_INV)) ||
		     (!(priv->byGPIO & GPIO0_DATA) &&
		     (priv->byRadioCtl & EEP_RADIOCTL_INV)))
			priv->bHWRadioOff = true;
	}

	if (priv->bHWRadioOff || priv->bRadioControlOff)
		CARDbRadioPowerOff(priv);

	/* get Permanent network address */
	SROMvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);
	pr_debug("Network address = %pM\n", priv->abyCurrentNetAddr);

	/* reset Tx pointer */
	CARDvSafeResetRx(priv);
	/* reset Rx pointer */
	CARDvSafeResetTx(priv);

	if (priv->byLocalID <= REV_ID_VT3253_A1)
		MACvRegBitsOn(priv->PortOffset, MAC_REG_RCR, RCR_WPAERR);

	/* Turn On Rx DMA */
	MACvReceive0(priv->PortOffset);
	MACvReceive1(priv->PortOffset);

	/* start the adapter */
	MACvStart(priv->PortOffset);
}

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static void device_print_info(struct vnt_private *priv)
{
	dev_info(&priv->pcid->dev, "MAC=%pM IO=0x%lx Mem=0x%lx IRQ=%d\n",
		 priv->abyCurrentNetAddr, (unsigned long)priv->ioaddr,
		 (unsigned long)priv->PortOffset, priv->pcid->irq);
}

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static void device_free_info(struct vnt_private *priv)
{
	if (!priv)
		return;

	if (priv->mac_hw)
		ieee80211_unregister_hw(priv->hw);

	if (priv->PortOffset)
		iounmap(priv->PortOffset);

	if (priv->pcid)
		pci_release_regions(priv->pcid);

	if (priv->hw)
		ieee80211_free_hw(priv->hw);
}

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static bool device_init_rings(struct vnt_private *priv)
{
	void *vir_pool;

	/*allocate all RD/TD rings a single pool*/
	vir_pool = dma_zalloc_coherent(&priv->pcid->dev,
				       priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
				       priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
				       priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
				       priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
				       &priv->pool_dma, GFP_ATOMIC);
	if (vir_pool == NULL) {
		dev_err(&priv->pcid->dev, "allocate desc dma memory failed\n");
		return false;
	}

	priv->aRD0Ring = vir_pool;
	priv->aRD1Ring = vir_pool +
		priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc);

	priv->rd0_pool_dma = priv->pool_dma;
	priv->rd1_pool_dma = priv->rd0_pool_dma +
		priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc);

	priv->tx0_bufs = dma_zalloc_coherent(&priv->pcid->dev,
					     priv->opts.tx_descs[0] * PKT_BUF_SZ +
					     priv->opts.tx_descs[1] * PKT_BUF_SZ +
					     CB_BEACON_BUF_SIZE +
					     CB_MAX_BUF_SIZE,
					     &priv->tx_bufs_dma0,
					     GFP_ATOMIC);
	if (priv->tx0_bufs == NULL) {
		dev_err(&priv->pcid->dev, "allocate buf dma memory failed\n");

		dma_free_coherent(&priv->pcid->dev,
				  priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
				  priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
				  priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
				  priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
				  vir_pool, priv->pool_dma);
		return false;
	}

	priv->td0_pool_dma = priv->rd1_pool_dma +
		priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc);

	priv->td1_pool_dma = priv->td0_pool_dma +
		priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc);

	/* vir_pool: pvoid type */
	priv->apTD0Rings = vir_pool
		+ priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc)
		+ priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc);

	priv->apTD1Rings = vir_pool
		+ priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc)
		+ priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc)
		+ priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc);

	priv->tx1_bufs = priv->tx0_bufs +
		priv->opts.tx_descs[0] * PKT_BUF_SZ;

	priv->tx_beacon_bufs = priv->tx1_bufs +
		priv->opts.tx_descs[1] * PKT_BUF_SZ;

	priv->pbyTmpBuff = priv->tx_beacon_bufs +
		CB_BEACON_BUF_SIZE;

	priv->tx_bufs_dma1 = priv->tx_bufs_dma0 +
		priv->opts.tx_descs[0] * PKT_BUF_SZ;

	priv->tx_beacon_dma = priv->tx_bufs_dma1 +
		priv->opts.tx_descs[1] * PKT_BUF_SZ;

	return true;
}

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static void device_free_rings(struct vnt_private *priv)
{
	dma_free_coherent(&priv->pcid->dev,
			  priv->opts.rx_descs0 * sizeof(struct vnt_rx_desc) +
			  priv->opts.rx_descs1 * sizeof(struct vnt_rx_desc) +
			  priv->opts.tx_descs[0] * sizeof(struct vnt_tx_desc) +
			  priv->opts.tx_descs[1] * sizeof(struct vnt_tx_desc),
			  priv->aRD0Ring, priv->pool_dma);

	if (priv->tx0_bufs)
		dma_free_coherent(&priv->pcid->dev,
				  priv->opts.tx_descs[0] * PKT_BUF_SZ +
				  priv->opts.tx_descs[1] * PKT_BUF_SZ +
				  CB_BEACON_BUF_SIZE +
				  CB_MAX_BUF_SIZE,
				  priv->tx0_bufs, priv->tx_bufs_dma0);
}

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static void device_init_rd0_ring(struct vnt_private *priv)
{
	int i;
	dma_addr_t      curr = priv->rd0_pool_dma;
	struct vnt_rx_desc *desc;

	/* Init the RD0 ring entries */
	for (i = 0; i < priv->opts.rx_descs0;
	     i ++, curr += sizeof(struct vnt_rx_desc)) {
		desc = &priv->aRD0Ring[i];
		desc->rd_info = kzalloc(sizeof(*desc->rd_info), GFP_ATOMIC);

		if (!device_alloc_rx_buf(priv, desc))
			dev_err(&priv->pcid->dev, "can not alloc rx bufs\n");

		desc->next = &(priv->aRD0Ring[(i+1) % priv->opts.rx_descs0]);
		desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_rx_desc));
	}

	if (i > 0)
		priv->aRD0Ring[i-1].next_desc = cpu_to_le32(priv->rd0_pool_dma);
	priv->pCurrRD[0] = &priv->aRD0Ring[0];
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
149
82.32%
9
90.00%
forest bond
forest bond
32
17.68%
1
10.00%
Total
181
100.00%
10
100.00%



static void device_init_rd1_ring(struct vnt_private *priv)
{
	int i;
	dma_addr_t      curr = priv->rd1_pool_dma;
	struct vnt_rx_desc *desc;

	/* Init the RD1 ring entries */
	for (i = 0; i < priv->opts.rx_descs1;
	     i ++, curr += sizeof(struct vnt_rx_desc)) {
		desc = &priv->aRD1Ring[i];
		desc->rd_info = kzalloc(sizeof(*desc->rd_info), GFP_ATOMIC);

		if (!device_alloc_rx_buf(priv, desc))
			dev_err(&priv->pcid->dev, "can not alloc rx bufs\n");

		desc->next = &(priv->aRD1Ring[(i+1) % priv->opts.rx_descs1]);
		desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_rx_desc));
	}

	if (i > 0)
		priv->aRD1Ring[i-1].next_desc = cpu_to_le32(priv->rd1_pool_dma);
	priv->pCurrRD[1] = &priv->aRD1Ring[0];
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
134
74.03%
10
90.91%
forest bond
forest bond
47
25.97%
1
9.09%
Total
181
100.00%
11
100.00%



static void device_free_rd0_ring(struct vnt_private *priv)
{
	int i;

	for (i = 0; i < priv->opts.rx_descs0; i++) {
		struct vnt_rx_desc *desc = &(priv->aRD0Ring[i]);
		struct vnt_rd_info *rd_info = desc->rd_info;

		dma_unmap_single(&priv->pcid->dev, rd_info->skb_dma,
				 priv->rx_buf_sz, DMA_FROM_DEVICE);

		dev_kfree_skb(rd_info->skb);

		kfree(desc->rd_info);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
69
75.82%
7
77.78%
forest bond
forest bond
17
18.68%
1
11.11%
quentin lambert
quentin lambert
5
5.49%
1
11.11%
Total
91
100.00%
9
100.00%



static void device_free_rd1_ring(struct vnt_private *priv)
{
	int i;

	for (i = 0; i < priv->opts.rx_descs1; i++) {
		struct vnt_rx_desc *desc = &priv->aRD1Ring[i];
		struct vnt_rd_info *rd_info = desc->rd_info;

		dma_unmap_single(&priv->pcid->dev, rd_info->skb_dma,
				 priv->rx_buf_sz, DMA_FROM_DEVICE);

		dev_kfree_skb(rd_info->skb);

		kfree(desc->rd_info);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
73
82.02%
7
77.78%
forest bond
forest bond
11
12.36%
1
11.11%
quentin lambert
quentin lambert
5
5.62%
1
11.11%
Total
89
100.00%
9
100.00%



static void device_init_td0_ring(struct vnt_private *priv)
{
	int i;
	dma_addr_t  curr;
	struct vnt_tx_desc *desc;

	curr = priv->td0_pool_dma;
	for (i = 0; i < priv->opts.tx_descs[0];
	     i++, curr += sizeof(struct vnt_tx_desc)) {
		desc = &priv->apTD0Rings[i];
		desc->td_info = kzalloc(sizeof(*desc->td_info), GFP_ATOMIC);

		desc->td_info->buf = priv->tx0_bufs + i * PKT_BUF_SZ;
		desc->td_info->buf_dma = priv->tx_bufs_dma0 + i * PKT_BUF_SZ;

		desc->next = &(priv->apTD0Rings[(i+1) % priv->opts.tx_descs[0]]);
		desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_tx_desc));
	}

	if (i > 0)
		priv->apTD0Rings[i-1].next_desc = cpu_to_le32(priv->td0_pool_dma);
	priv->apTailTD[0] = priv->apCurrTD[0] = &priv->apTD0Rings[0];
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
146
72.64%
8
88.89%
forest bond
forest bond
55
27.36%
1
11.11%
Total
201
100.00%
9
100.00%



static void device_init_td1_ring(struct vnt_private *priv)
{
	int i;
	dma_addr_t  curr;
	struct vnt_tx_desc *desc;

	/* Init the TD ring entries */
	curr = priv->td1_pool_dma;
	for (i = 0; i < priv->opts.tx_descs[1];
	     i++, curr += sizeof(struct vnt_tx_desc)) {
		desc = &priv->apTD1Rings[i];
		desc->td_info = kzalloc(sizeof(*desc->td_info), GFP_ATOMIC);

		desc->td_info->buf = priv->tx1_bufs + i * PKT_BUF_SZ;
		desc->td_info->buf_dma = priv->tx_bufs_dma1 + i * PKT_BUF_SZ;

		desc->next = &(priv->apTD1Rings[(i + 1) % priv->opts.tx_descs[1]]);
		desc->next_desc = cpu_to_le32(curr + sizeof(struct vnt_tx_desc));
	}

	if (i > 0)
		priv->apTD1Rings[i-1].next_desc = cpu_to_le32(priv->td1_pool_dma);
	priv->apTailTD[1] = priv->apCurrTD[1] = &priv->apTD1Rings[0];
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
forest bond
forest bond
102
50.50%
1
9.09%
malcolm priestley
malcolm priestley
94
46.53%
9
81.82%
roel kluin
roel kluin
6
2.97%
1
9.09%
Total
202
100.00%
11
100.00%



static void device_free_td0_ring(struct vnt_private *priv)
{
	int i;

	for (i = 0; i < priv->opts.tx_descs[0]; i++) {
		struct vnt_tx_desc *desc = &priv->apTD0Rings[i];
		struct vnt_td_info *td_info = desc->td_info;

		dev_kfree_skb(td_info->skb);
		kfree(desc->td_info);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
36
50.00%
9
90.00%
forest bond
forest bond
36
50.00%
1
10.00%
Total
72
100.00%
10
100.00%



static void device_free_td1_ring(struct vnt_private *priv)
{
	int i;

	for (i = 0; i < priv->opts.tx_descs[1]; i++) {
		struct vnt_tx_desc *desc = &priv->apTD1Rings[i];
		struct vnt_td_info *td_info = desc->td_info;

		dev_kfree_skb(td_info->skb);
		kfree(desc->td_info);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
forest bond
forest bond
44
61.11%
1
10.00%
malcolm priestley
malcolm priestley
28
38.89%
9
90.00%
Total
72
100.00%
10
100.00%

/*-----------------------------------------------------------------*/



static int device_rx_srv(struct vnt_private *priv, unsigned int idx)
{
	struct vnt_rx_desc *rd;
	int works = 0;

	for (rd = priv->pCurrRD[idx];
	     rd->rd0.owner == OWNED_BY_HOST;
	     rd = rd->next) {
		if (works++ > 15)
			break;

		if (!rd->rd_info->skb)
			break;

		if (vnt_receive_frame(priv, rd)) {
			if (!device_alloc_rx_buf(priv, rd)) {
				dev_err(&priv->pcid->dev,
					"can not allocate rx buf\n");
				break;
			}
		}
		rd->rd0.owner = OWNED_BY_NIC;
	}

	priv->pCurrRD[idx] = rd;

	return works;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
95
75.40%
9
90.00%
forest bond
forest bond
31
24.60%
1
10.00%
Total
126
100.00%
10
100.00%



static bool device_alloc_rx_buf(struct vnt_private *priv,
				struct vnt_rx_desc *rd)
{
	struct vnt_rd_info *rd_info = rd->rd_info;

	rd_info->skb = dev_alloc_skb((int)priv->rx_buf_sz);
	if (rd_info->skb == NULL)
		return false;

	rd_info->skb_dma =
		dma_map_single(&priv->pcid->dev,
			       skb_put(rd_info->skb, skb_tailroom(rd_info->skb)),
			       priv->rx_buf_sz, DMA_FROM_DEVICE);
	if (dma_mapping_error(&priv->pcid->dev, rd_info->skb_dma)) {
		dev_kfree_skb(rd_info->skb);
		rd_info->skb = NULL;
		return false;
	}

	*((unsigned int *)&rd->rd0) = 0; /* FIX cast */

	rd->rd0.res_count = cpu_to_le16(priv->rx_buf_sz);
	rd->rd0.owner = OWNED_BY_NIC;
	rd->rd1.req_count = cpu_to_le16(priv->rx_buf_sz);
	rd->buff_addr = cpu_to_le32(rd_info->skb_dma);

	return true;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
97
53.30%
9
75.00%
forest bond
forest bond
46
25.27%
1
8.33%
haneen mohammed
haneen mohammed
34
18.68%
1
8.33%
quentin lambert
quentin lambert
5
2.75%
1
8.33%
Total
182
100.00%
12
100.00%


static const u8 fallback_rate0[5][5] = {
	{RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
	{RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
	{RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
	{RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
	{RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
};


static const u8 fallback_rate1[5][5] = {
	{RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
	{RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
	{RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
	{RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
	{RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
};



static int vnt_int_report_rate(struct vnt_private *priv,
			       struct vnt_td_info *context, u8 tsr0, u8 tsr1)
{
	struct vnt_tx_fifo_head *fifo_head;
	struct ieee80211_tx_info *info;
	struct ieee80211_rate *rate;
	u16 fb_option;
	u8 tx_retry = (tsr0 & TSR0_NCR);
	s8 idx;

	if (!context)
		return -ENOMEM;

	if (!context->skb)
		return -EINVAL;

	fifo_head = (struct vnt_tx_fifo_head *)context->buf;
	fb_option = (le16_to_cpu(fifo_head->fifo_ctl) &
			(FIFOCTL_AUTO_FB_0 | FIFOCTL_AUTO_FB_1));

	info = IEEE80211_SKB_CB(context->skb);
	idx = info->control.rates[0].idx;

	if (fb_option && !(tsr1 & TSR1_TERR)) {
		u8 tx_rate;
		u8 retry = tx_retry;

		rate = ieee80211_get_tx_rate(priv->hw, info);
		tx_rate = rate->hw_value - RATE_18M;

		if (retry > 4)
			retry = 4;

		if (fb_option & FIFOCTL_AUTO_FB_0)
			tx_rate = fallback_rate0[tx_rate][retry];
		else if (fb_option & FIFOCTL_AUTO_FB_1)
			tx_rate = fallback_rate1[tx_rate][retry];

		if (info->band == NL80211_BAND_5GHZ)
			idx = tx_rate - RATE_6M;
		else
			idx = tx_rate;
	}

	ieee80211_tx_info_clear_status(info);

	info->status.rates[0].count = tx_retry;

	if (!(tsr1 & TSR1_TERR)) {
		info->status.rates[0].idx = idx;

		if (info->flags & IEEE80211_TX_CTL_NO_ACK)
			info->flags |= IEEE80211_TX_STAT_NOACK_TRANSMITTED;
		else
			info->flags |= IEEE80211_TX_STAT_ACK;
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
252
86.90%
5
62.50%
forest bond
forest bond
34
11.72%
1
12.50%
roel kluin
roel kluin
3
1.03%
1
12.50%
johannes berg
johannes berg
1
0.34%
1
12.50%
Total
290
100.00%
8
100.00%



static int device_tx_srv(struct vnt_private *priv, unsigned int idx)
{
	struct vnt_tx_desc *desc;
	int                      works = 0;
	unsigned char byTsr0;
	unsigned char byTsr1;

	for (desc = priv->apTailTD[idx]; priv->iTDUsed[idx] > 0; desc = desc->next) {
		if (desc->td0.owner == OWNED_BY_NIC)
			break;
		if (works++ > 15)
			break;

		byTsr0 = desc->td0.tsr0;
		byTsr1 = desc->td0.tsr1;

		/* Only the status of first TD in the chain is correct */
		if (desc->td1.tcr & TCR_STP) {
			if ((desc->td_info->flags & TD_FLAGS_NETIF_SKB) != 0) {
				if (!(byTsr1 & TSR1_TERR)) {
					if (byTsr0 != 0) {
						pr_debug(" Tx[%d] OK but has error. tsr1[%02X] tsr0[%02X]\n",
							 (int)idx, byTsr1,
							 byTsr0);
					}
				} else {
					pr_debug(" Tx[%d] dropped & tsr1[%02X] tsr0[%02X]\n",
						 (int)idx, byTsr1, byTsr0);
				}
			}

			if (byTsr1 & TSR1_TERR) {
				if ((desc->td_info->flags & TD_FLAGS_PRIV_SKB) != 0) {
					pr_debug(" Tx[%d] fail has error. tsr1[%02X] tsr0[%02X]\n",
						 (int)idx, byTsr1, byTsr0);
				}
			}

			vnt_int_report_rate(priv, desc->td_info, byTsr0, byTsr1);

			device_free_tx_buf(priv, desc);
			priv->iTDUsed[idx]--;
		}
	}

	priv->apTailTD[idx] = desc;

	return works;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
213
84.19%
12
80.00%
forest bond
forest bond
37
14.62%
1
6.67%
jim lieb
jim lieb
2
0.79%
1
6.67%
alex w slater
alex w slater
1
0.40%
1
6.67%
Total
253
100.00%
15
100.00%



static void device_error(struct vnt_private *priv, unsigned short status)
{
	if (status & ISR_FETALERR) {
		dev_err(&priv->pcid->dev, "Hardware fatal error\n");

		MACbShutdown(priv);
		return;
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
32
78.05%
3
75.00%
forest bond
forest bond
9
21.95%
1
25.00%
Total
41
100.00%
4
100.00%



static void device_free_tx_buf(struct vnt_private *priv,
			       struct vnt_tx_desc *desc)
{
	struct vnt_td_info *td_info = desc->td_info;
	struct sk_buff *skb = td_info->skb;

	if (skb)
		ieee80211_tx_status_irqsafe(priv->hw, skb);

	td_info->skb = NULL;
	td_info->flags = 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
44
74.58%
9
90.00%
forest bond
forest bond
15
25.42%
1
10.00%
Total
59
100.00%
10
100.00%



static void vnt_check_bb_vga(struct vnt_private *priv)
{
	long dbm;
	int i;

	if (!priv->bUpdateBBVGA)
		return;

	if (priv->hw->conf.flags & IEEE80211_CONF_OFFCHANNEL)
		return;

	if (!(priv->vif->bss_conf.assoc && priv->uCurrRSSI))
		return;

	RFvRSSITodBm(priv, (u8)priv->uCurrRSSI, &dbm);

	for (i = 0; i < BB_VGA_LEVEL; i++) {
		if (dbm < priv->ldBmThreshold[i]) {
			priv->byBBVGANew = priv->abyBBVGA[i];
			break;
		}
	}

	if (priv->byBBVGANew == priv->byBBVGACurrent) {
		priv->uBBVGADiffCount = 1;
		return;
	}

	priv->uBBVGADiffCount++;

	if (priv->uBBVGADiffCount == 1) {
		/* first VGA diff gain */
		BBvSetVGAGainOffset(priv, priv->byBBVGANew);

		dev_dbg(&priv->pcid->dev,
			"First RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
			(int)dbm, priv->byBBVGANew,
			priv->byBBVGACurrent,
			(int)priv->uBBVGADiffCount);
	}

	if (priv->uBBVGADiffCount >= BB_VGA_CHANGE_THRESHOLD) {
		dev_dbg(&priv->pcid->dev,
			"RSSI[%d] NewGain[%d] OldGain[%d] Count[%d]\n",
			(int)dbm, priv->byBBVGANew,
			priv->byBBVGACurrent,
			(int)priv->uBBVGADiffCount);

		BBvSetVGAGainOffset(priv, priv->byBBVGANew);
	}
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
238
100.00%
1
100.00%
Total
238
100.00%
1
100.00%



static void vnt_interrupt_process(struct vnt_private *priv)
{
	struct ieee80211_low_level_stats *low_stats = &priv->low_stats;
	int             max_count = 0;
	u32 mib_counter;
	u32 isr;
	unsigned long flags;

	MACvReadISR(priv->PortOffset, &isr);

	if (isr == 0)
		return;

	if (isr == 0xffffffff) {
		pr_debug("isr = 0xffff\n");
		return;
	}

	MACvIntDisable(priv->PortOffset);

	spin_lock_irqsave(&priv->lock, flags);

	/* Read low level stats */
	MACvReadMIBCounter(priv->PortOffset, &mib_counter);

	low_stats->dot11RTSSuccessCount += mib_counter & 0xff;
	low_stats->dot11RTSFailureCount += (mib_counter >> 8) & 0xff;
	low_stats->dot11ACKFailureCount += (mib_counter >> 16) & 0xff;
	low_stats->dot11FCSErrorCount += (mib_counter >> 24) & 0xff;

	/*
         * TBD....
         * Must do this after doing rx/tx, cause ISR bit is slow
         * than RD/TD write back
         * update ISR counter
         */
	while (isr && priv->vif) {
		MACvWriteISR(priv->PortOffset, isr);

		if (isr & ISR_FETALERR) {
			pr_debug(" ISR_FETALERR\n");
			VNSvOutPortB(priv->PortOffset + MAC_REG_SOFTPWRCTL, 0);
			VNSvOutPortW(priv->PortOffset +
				     MAC_REG_SOFTPWRCTL, SOFTPWRCTL_SWPECTI);
			device_error(priv, isr);
		}

		if (isr & ISR_TBTT) {
			if (priv->op_mode != NL80211_IFTYPE_ADHOC)
				vnt_check_bb_vga(priv);

			priv->bBeaconSent = false;
			if (priv->bEnablePSMode)
				PSbIsNextTBTTWakeUp((void *)priv);

			if ((priv->op_mode == NL80211_IFTYPE_AP ||
			    priv->op_mode == NL80211_IFTYPE_ADHOC) &&
			    priv->vif->bss_conf.enable_beacon) {
				MACvOneShotTimer1MicroSec(priv,
							  (priv->vif->bss_conf.beacon_int - MAKE_BEACON_RESERVED) << 10);
			}

			/* TODO: adhoc PS mode */

		}

		if (isr & ISR_BNTX) {
			if (priv->op_mode == NL80211_IFTYPE_ADHOC) {
				priv->bIsBeaconBufReadySet = false;
				priv->cbBeaconBufReadySetCnt = 0;
			}

			priv->bBeaconSent = true;
		}

		if (isr & ISR_RXDMA0)
			max_count += device_rx_srv(priv, TYPE_RXDMA0);

		if (isr & ISR_RXDMA1)
			max_count += device_rx_srv(priv, TYPE_RXDMA1);

		if (isr & ISR_TXDMA0)
			max_count += device_tx_srv(priv, TYPE_TXDMA0);

		if (isr & ISR_AC0DMA)
			max_count += device_tx_srv(priv, TYPE_AC0DMA);

		if (isr & ISR_SOFTTIMER1) {
			if (priv->vif->bss_conf.enable_beacon)
				vnt_beacon_make(priv, priv->vif);
		}

		/* If both buffers available wake the queue */
		if (AVAIL_TD(priv, TYPE_TXDMA0) &&
		    AVAIL_TD(priv, TYPE_AC0DMA) &&
		    ieee80211_queue_stopped(priv->hw, 0))
			ieee80211_wake_queues(priv->hw);

		MACvReadISR(priv->PortOffset, &isr);

		MACvReceive0(priv->PortOffset);
		MACvReceive1(priv->PortOffset);

		if (max_count > priv->opts.int_works)
			break;
	}

	spin_unlock_irqrestore(&priv->lock, flags);

	MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
malcolm priestley
malcolm priestley
410
82.16%
10
76.92%
forest bond
forest bond
86
17.23%
1
7.69%
bartlomiej zolnierkiewicz
bartlomiej zolnierkiewicz
2
0.40%
1
7.69%
joe perches
joe perches
1
0.20%
1
7.69%
Total
499
100.00%
13
100.00%



static void vnt_interrupt_work(struct work_struct *work)
{
	struct vnt_private *priv =
		container_of(work, struct vnt_private, interrupt_work);

	if (priv->vif)
		vnt_interrupt_process(priv);
}

Contributors
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Tokens
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Commits
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static irqreturn_t vnt_interrupt(int irq,  void *arg)
{
	struct vnt_private *priv = arg;

	if (priv->vif)
		schedule_work(&priv->interrupt_work);

	return IRQ_HANDLED;
}

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static int vnt_tx_packet(struct vnt_private *priv, struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
	struct vnt_tx_desc *head_td;
	u32 dma_idx;
	unsigned long flags;

	spin_lock_irqsave(&priv->lock, flags);

	if (ieee80211_is_data(hdr->frame_control))
		dma_idx = TYPE_AC0DMA;
	else
		dma_idx = TYPE_TXDMA0;

	if (AVAIL_TD(priv, dma_idx) < 1) {
		spin_unlock_irqrestore(&priv->lock, flags);
		ieee80211_stop_queues(priv->hw);
		return -ENOMEM;
	}

	head_td = priv->apCurrTD[dma_idx];

	head_td->td1.tcr = 0;

	head_td->td_info->skb = skb;

	if (dma_idx == TYPE_AC0DMA)
		head_td->td_info->flags = TD_FLAGS_NETIF_SKB;

	priv->apCurrTD[dma_idx] = head_td->next;

	spin_unlock_irqrestore(&priv->lock, flags);

	vnt_generate_fifo_header(priv, dma_idx, head_td, skb);

	spin_lock_irqsave(&priv->lock, flags);

	priv->bPWBitOn = false;

	/* Set TSR1 & ReqCount in TxDescHead */
	head_td->td1.tcr |= (TCR_STP | TCR_EDP | EDMSDU);
	head_td->td1.req_count = cpu_to_le16(head_td->td_info->req_count);

	head_td->buff_addr = cpu_to_le32(head_td->td_info->buf_dma);

	/* Poll Transmit the adapter */
	wmb();
	head_td->td0.owner = OWNED_BY_NIC;
	wmb(); /* second memory barrier */

	if (head_td->td_info->flags & TD_FLAGS_NETIF_SKB)
		MACvTransmitAC0(priv->PortOffset);
	else
		MACvTransmit0(priv->PortOffset);

	priv->iTDUsed[dma_idx]++;

	spin_unlock_irqrestore(&priv->lock, flags);

	return 0;
}

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static void vnt_tx_80211(struct ieee80211_hw *hw,
			 struct ieee80211_tx_control *control,
			 struct sk_buff *skb)
{
	struct vnt_private *priv = hw->priv;

	if (vnt_tx_packet(priv, skb))
		ieee80211_free_txskb(hw, skb);
}

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static int vnt_start(struct ieee80211_hw *hw)
{
	struct vnt_private *priv = hw->priv;
	int ret;

	priv->rx_buf_sz = PKT_BUF_SZ;
	if (!device_init_rings(priv))
		return -ENOMEM;

	ret = request_irq(priv->pcid->irq, vnt_interrupt,
			  IRQF_SHARED, "vt6655", priv);
	if (ret) {
		dev_dbg(&priv->pcid->dev, "failed to start irq\n");
		return ret;
	}

	dev_dbg(&priv->pcid->dev, "call device init rd0 ring\n");
	device_init_rd0_ring(priv);
	device_init_rd1_ring(priv);
	device_init_td0_ring(priv);
	device_init_td1_ring(priv);

	device_init_registers(priv);

	dev_dbg(&priv->pcid->dev, "call MACvIntEnable\n");
	MACvIntEnable(priv->PortOffset, IMR_MASK_VALUE);

	ieee80211_wake_queues(hw);

	return 0;
}

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static void vnt_stop(struct ieee80211_hw *hw)
{
	struct vnt_private *priv = hw->priv;

	ieee80211_stop_queues(hw);

	cancel_work_sync(&priv->interrupt_work);

	MACbShutdown(priv);
	MACbSoftwareReset(priv);
	CARDbRadioPowerOff(priv);

	device_free_td0_ring(priv);
	device_free_td1_ring(priv);
	device_free_rd0_ring(priv);
	device_free_rd1_ring(priv);
	device_free_rings(priv);

	free_irq(priv->pcid->irq, priv);
}

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static int vnt_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	struct vnt_private *priv = hw->priv;

	priv->vif = vif;

	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
		break;
	case NL80211_IFTYPE_ADHOC:
		MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);

		MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);

		break;
	case NL80211_IFTYPE_AP:
		MACvRegBitsOff(priv->PortOffset, MAC_REG_RCR, RCR_UNICAST);

		MACvRegBitsOn(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);

		break;
	default:
		return -EOPNOTSUPP;
	}

	priv->op_mode = vif->type;

	return 0;
}

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static void vnt_remove_interface(struct ieee80211_hw *hw,
				 struct ieee80211_vif *vif)
{
	struct vnt_private *priv = hw->priv;

	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
		break;
	case NL80211_IFTYPE_ADHOC:
		MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
		MACvRegBitsOff(priv->PortOffset,
			       MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
		MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_ADHOC);
		break;
	case NL80211_IFTYPE_AP:
		MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR, TCR_AUTOBCNTX);
		MACvRegBitsOff(priv->PortOffset,
			       MAC_REG_TFTCTL, TFTCTL_TSFCNTREN);
		MACvRegBitsOff(priv->PortOffset, MAC_REG_HOSTCR, HOSTCR_AP);
		break;
	default:
		break;
	}

	priv->op_mode = NL80211_IFTYPE_UNSPECIFIED;
}


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static int vnt_config(struct ieee80211_hw *hw, u32 changed)
{
	struct vnt_private *priv = hw->priv;
	struct ieee80211_conf *conf = &hw->conf;
	u8 bb_type;

	if (changed & IEEE80211_CONF_CHANGE_PS) {
		if (conf->flags & IEEE80211_CONF_PS)
			PSvEnablePowerSaving(priv, conf->listen_interval);
		else
			PSvDisablePowerSaving(priv);
	}

	if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) ||
	    (conf->flags & IEEE80211_CONF_OFFCHANNEL)) {
		set_channel(priv, conf->chandef.chan);

		if (conf->chandef.chan->band == NL80211_BAND_5GHZ)
			bb_type = BB_TYPE_11A;
		else
			bb_type = BB_TYPE_11G;

		if (priv->byBBType != bb_type) {
			priv->byBBType = bb_type;

			CARDbSetPhyParameter(priv, priv->byBBType);
		}
	}

	if (changed & IEEE80211_CONF_CHANGE_POWER) {
		if (priv->byBBType == BB_TYPE_11B)
			priv->wCurrentRate = RATE_1M;
		else
			priv->wCurrentRate = RATE_54M;

		RFbSetPower(priv, priv->wCurrentRate,
			    conf->chandef.chan->hw_value);
	}

	return 0;
}

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static void vnt_bss_info_changed(struct ieee80211_hw *hw,
		struct ieee80211_vif *vif, struct ieee80211_bss_conf *conf,
		u32 changed)
{
	struct vnt_private *priv = hw->priv;

	priv->current_aid = conf->aid;

	if (changed & BSS_CHANGED_BSSID && conf->bssid) {
		unsigned long flags;

		spin_lock_irqsave(&priv->lock, flags);

		MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid);

		spin_unlock_irqrestore(&priv->lock, flags);
	}

	if (changed & BSS_CHANGED_BASIC_RATES) {
		priv->basic_rates = conf->basic_rates;

		CARDvUpdateBasicTopRate(priv);

		dev_dbg(&priv->pcid->dev,
			"basic rates %x\n", conf->basic_rates);
	}

	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
		if (conf->use_short_preamble) {
			MACvEnableBarkerPreambleMd(priv->PortOffset);
			priv->byPreambleType = true;
		} else {
			MACvDisableBarkerPreambleMd(priv->PortOffset);
			priv->byPreambleType = false;
		}
	}

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
		if (conf->use_cts_prot)
			MACvEnableProtectMD(priv->PortOffset);
		else
			MACvDisableProtectMD(priv->PortOffset);
	}

	if (changed & BSS_CHANGED_ERP_SLOT) {
		if (conf->use_short_slot)
			priv->bShortSlotTime = true;
		else
			priv->bShortSlotTime = false;

		CARDbSetPhyParameter(priv, priv->byBBType);
		BBvSetVGAGainOffset(priv, priv->abyBBVGA[0]);
	}

	if (changed & BSS_CHANGED_TXPOWER)
		RFbSetPower(priv, priv->wCurrentRate,
			    conf->chandef.chan->hw_value);

	if (changed & BSS_CHANGED_BEACON_ENABLED) {
		dev_dbg(&priv->pcid->dev,
			"Beacon enable %d\n", conf->enable_beacon);

		if (conf->enable_beacon) {
			vnt_beacon_enable(priv, vif, conf);

			MACvRegBitsOn(priv->PortOffset, MAC_REG_TCR,
				      TCR_AUTOBCNTX);
		} else {
			MACvRegBitsOff(priv->PortOffset, MAC_REG_TCR,
				       TCR_AUTOBCNTX);
		}
	}

	if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_BEACON_INFO) &&
	    priv->op_mode != NL80211_IFTYPE_AP) {
		if (conf->assoc && conf->beacon_rate) {
			CARDbUpdateTSF(priv, conf->beacon_rate->hw_value,
				       conf->sync_tsf);

			CARDbSetBeaconPeriod(priv, conf->beacon_int);

			CARDvSetFirstNextTBTT(priv, conf->beacon_int);
		} else {
			VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
				     TFTCTL_TSFCNTRST);
			VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL,
				     TFTCTL_TSFCNTREN);
		}
	}
}

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static u64 vnt_prepare_multicast(struct ieee80211_hw *hw,
	struct netdev_hw_addr_list *mc_list)
{
	struct vnt_private *priv = hw->priv;
	struct netdev_hw_addr *ha;
	u64 mc_filter = 0;
	u32 bit_nr = 0;

	netdev_hw_addr_list_for_each(ha, mc_list) {
		bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;

		mc_filter |= 1ULL << (bit_nr & 0x3f);
	}

	priv->mc_list_count = mc_list->count;

	return mc_filter;
}

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static void vnt_configure(struct ieee80211_hw *hw,
	unsigned int changed_flags, unsigned int *total_flags, u64 multicast)
{
	struct vnt_private *priv = hw->priv;
	u8 rx_mode = 0;

	*total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;

	VNSvInPortB(priv->PortOffset + MAC_REG_RCR, &rx_mode);

	dev_dbg(&priv->pcid->dev, "rx mode in = %x\n", rx_mode);

	if (changed_flags & FIF_ALLMULTI) {
		if (*total_flags & FIF_ALLMULTI) {
			unsigned long flags;

			spin_lock_irqsave(&priv->lock, flags);

			if (priv->mc_list_count > 2) {
				MACvSelectPage1(priv->PortOffset);

				VNSvOutPortD(priv->PortOffset +
					     MAC_REG_MAR0, 0xffffffff);
				VNSvOutPortD(priv->PortOffset +
					    MAC_REG_MAR0 + 4, 0xffffffff);

				MACvSelectPage0(priv->PortOffset);
			} else {
				MACvSelectPage1(priv->PortOffset);

				VNSvOutPortD(priv->PortOffset +
					     MAC_REG_MAR0, (u32)multicast);
				VNSvOutPortD(priv->PortOffset +
					     MAC_REG_MAR0 + 4,
					     (u32)(multicast >> 32));

				MACvSelectPage0(priv->PortOffset);
			}

			spin_unlock_irqrestore(&priv->lock, flags);

			rx_mode |= RCR_MULTICAST | RCR_BROADCAST;
		} else {
			rx_mode &= ~(RCR_MULTICAST | RCR_BROADCAST);
		}
	}

	if (changed_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC)) {
		rx_mode |= RCR_MULTICAST | RCR_BROADCAST;

		if (*total_flags & (FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC))
			rx_mode &= ~RCR_BSSID;
		else
			rx_mode |= RCR_BSSID;
	}

	VNSvOutPortB(priv->PortOffset + MAC_REG_RCR, rx_mode);

	dev_dbg(&priv->pcid->dev, "rx mode out= %x\n", rx_mode);
}

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static int vnt_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
	struct ieee80211_vif *vif, struct ieee80211_sta *sta,
		struct ieee80211_key_conf *key)
{
	struct vnt_private *priv = hw->priv;

	switch (cmd) {
	case SET_KEY:
		if (vnt_set_keys(hw, sta, vif, key))
			return -EOPNOTSUPP;
		break;
	case DISABLE_KEY:
		if (test_bit(key->hw_key_idx, &priv->key_entry_inuse))
			clear_bit(key->hw_key_idx, &priv->key_entry_inuse);
	default:
		break;
	}

	return 0;
}

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static int vnt_get_stats(struct ieee80211_hw *hw,
			 struct ieee80211_low_level_stats *stats)
{
	struct vnt_private *priv = hw->priv;

	memcpy(stats, &priv->low_stats, sizeof(*stats));

	return 0;
}

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static u64 vnt_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	struct vnt_private *priv = hw->priv;
	u64 tsf;

	CARDbGetCurrentTSF(priv, &tsf);

	return tsf;
}

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static void vnt_set_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
			u64 tsf)
{
	struct vnt_private *priv = hw->priv;

	CARDvUpdateNextTBTT(priv, tsf, vif->bss_conf.beacon_int);
}

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static void vnt_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
	struct vnt_private *priv = hw->priv;

	/* reset TSF counter */
	VNSvOutPortB(priv->PortOffset + MAC_REG_TFTCTL, TFTCTL_TSFCNTRST);
}

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static const struct ieee80211_ops vnt_mac_ops = {
	.tx			= vnt_tx_80211,
	.start			= vnt_start,
	.stop			= vnt_stop,
	.add_interface		= vnt_add_interface,
	.remove_interface	= vnt_remove_interface,
	.config			= vnt_config,
	.bss_info_changed	= vnt_bss_info_changed,
	.prepare_multicast	= vnt_prepare_multicast,
	.configure_filter	= vnt_configure,
	.set_key		= vnt_set_key,
	.get_stats		= vnt_get_stats,
	.get_tsf		= vnt_get_tsf,
	.set_tsf		= vnt_set_tsf,
	.reset_tsf		= vnt_reset_tsf,
};



static int vnt_init(struct vnt_private *priv)
{
	SET_IEEE80211_PERM_ADDR(priv->hw, priv->abyCurrentNetAddr);

	vnt_init_bands(priv);

	if (ieee80211_register_hw(priv->hw))
		return -ENODEV;

	priv->mac_hw = true;

	CARDbRadioPowerOff(priv);

	return 0;
}

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static int

vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
{
	struct vnt_private *priv;
	struct ieee80211_hw *hw;
	struct wiphy *wiphy;
	int         rc;

	dev_notice(&pcid->dev,
		   "%s Ver. %s\n", DEVICE_FULL_DRV_NAM, DEVICE_VERSION);

	dev_notice(&pcid->dev,
		   "Copyright (c) 2003 VIA Networking Technologies, Inc.\n");

	hw = ieee80211_alloc_hw(sizeof(*priv), &vnt_mac_ops);
	if (!hw) {
		dev_err(&pcid->dev, "could not register ieee80211_hw\n");
		return -ENOMEM;
	}

	priv = hw->priv;
	priv->pcid = pcid;

	spin_lock_init(&priv->lock);

	priv->hw = hw;

	SET_IEEE80211_DEV(priv->hw, &pcid->dev);

	if (pci_enable_device(pcid)) {
		device_free_info(priv);
		return -ENODEV;
	}

	dev_dbg(&pcid->dev,
		"Before get pci_info memaddr is %x\n", priv->memaddr);

	pci_set_master(pcid);

	priv->memaddr = pci_resource_start(pcid, 0);
	priv->ioaddr = pci_resource_start(pcid, 1);
	priv->PortOffset = ioremap(priv->memaddr & PCI_BASE_ADDRESS_MEM_MASK,
				   256);
	if (!priv->PortOffset) {
		dev_err(&pcid->dev, ": Failed to IO remapping ..\n");
		device_free_info(priv);
		return -ENODEV;
	}

	rc = pci_request_regions(pcid, DEVICE_NAME);
	if (rc) {
		dev_err(&pcid->dev, ": Failed to find PCI device\n");
		device_free_info(priv);
		return -ENODEV;
	}

	if (dma_set_mask(&pcid->dev, DMA_BIT_MASK(32))) {
		dev_err(&pcid->dev, ": Failed to set dma 32 bit mask\n");
		device_free_info(priv);
		return -ENODEV;
	}

	INIT_WORK(&priv->interrupt_work, vnt_interrupt_work);

	/* do reset */
	if (!MACbSoftwareReset(priv)) {
		dev_err(&pcid->dev, ": Failed to access MAC hardware..\n");
		device_free_info(priv);
		return -ENODEV;
	}
	/* initial to reload eeprom */
	MACvInitialize(priv);
	MACvReadEtherAddress(priv->PortOffset, priv->abyCurrentNetAddr);

	/* Get RFType */
	priv->byRFType = SROMbyReadEmbedded(priv->PortOffset, EEP_OFS_RFTYPE);
	priv->byRFType &= RF_MASK;

	dev_dbg(&pcid->dev, "RF Type = %x\n", priv->byRFType);

	device_get_options(priv);
	device_set_options(priv);

	wiphy = priv->hw->wiphy;

	wiphy->frag_threshold = FRAG_THRESH_DEF;
	wiphy->rts_threshold = RTS_THRESH_DEF;
	wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
		BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_AP);

	ieee80211_hw_set(priv->hw, TIMING_BEACON_ONLY);
	ieee80211_hw_set(priv->hw, SIGNAL_DBM);
	ieee80211_hw_set(priv->hw, RX_INCLUDES_FCS);
	ieee80211_hw_set(priv->hw, REPORTS_TX_ACK_STATUS);
	ieee80211_hw_set(priv->hw, SUPPORTS_PS);

	priv->hw->max_signal = 100;

	if (vnt_init(priv))
		return -ENODEV;

	device_print_info(priv);
	pci_set_drvdata(pcid, priv);

	return 0;
}

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/*------------------------------------------------------------------*/

#ifdef CONFIG_PM


static int vt6655_suspend(struct pci_dev *pcid, pm_message_t state)
{
	struct vnt_private *priv = pci_get_drvdata(pcid);
	unsigned long flags;

	spin_lock_irqsave(&priv->lock, flags);

	pci_save_state(pcid);

	MACbShutdown(priv);

	pci_disable_device(pcid);
	pci_set_power_state(pcid, pci_choose_state(pcid, state));

	spin_unlock_irqrestore(&priv->lock, flags);

	return 0;
}

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static int vt6655_resume(struct pci_dev *pcid)
{

	pci_set_power_state(pcid, PCI_D0);
	pci_enable_wake(pcid, PCI_D0, 0);
	pci_restore_state(pcid);

	return 0;
}
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#endif

MODULE_DEVICE_TABLE(pci, vt6655_pci_id_table);


static struct pci_driver device_driver = {
	.name = DEVICE_NAME,
	.id_table = vt6655_pci_id_table,
	.probe = vt6655_probe,
	.remove = vt6655_remove,
#ifdef CONFIG_PM
	.suspend = vt6655_suspend,
	.resume = vt6655_resume,
#endif
};


module_pci_driver(device_driver);
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jim lieb
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jingoo han
6
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alex w slater
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mike krinkin
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tejun heo
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al viro
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Directory: drivers/staging/vt6655

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