linux/drivers/staging/vt6655/mac.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
 * All rights reserved.
 *
 * Purpose:  MAC routines
 *
 * Author: Tevin Chen
 *
 * Date: May 21, 1996
 *
 * Functions:
 *      vt6655_mac_is_reg_bits_off - Test if All test Bits Off
 *      vt6655_mac_set_short_retry_limit - Set 802.11 Short Retry limit
 *      MACvSetLongRetryLimit - Set 802.11 Long Retry limit
 *      vt6655_mac_set_loopback_mode - Set MAC Loopback Mode
 *      vt6655_mac_save_context - Save Context of MAC Registers
 *      vt6655_mac_restore_context - Restore Context of MAC Registers
 *      MACbSoftwareReset - Software Reset MAC
 *      vt6655_mac_safe_rx_off - Turn Off MAC Rx
 *      vt6655_mac_safe_tx_off - Turn Off MAC Tx
 *      vt6655_mac_safe_stop - Stop MAC function
 *      MACbShutdown - Shut down MAC
 *      MACvInitialize - Initialize MAC
 *      MACvSetCurrRxDescAddr - Set Rx Descriptors Address
 *      MACvSetCurrTx0DescAddr - Set Tx0 Descriptors Address
 *      MACvSetCurrTx1DescAddr - Set Tx1 Descriptors Address
 *      MACvTimer0MicroSDelay - Micro Second Delay Loop by MAC
 *
 * Revision History:
 *      08-22-2003 Kyle Hsu     :  Porting MAC functions from sim53
 *      09-03-2003 Bryan YC Fan :  Add MACvClearBusSusInd()&
 *				   MACvEnableBusSusEn()
 *      09-18-2003 Jerry Chen   :  Add MACvSetKeyEntry & MACvDisableKeyEntry
 *
 */

#include "mac.h"

void vt6655_mac_reg_bits_on(void __iomem *iobase, const u8 reg_offset, const u8 bit_mask)
{ … }

void vt6655_mac_word_reg_bits_on(void __iomem *iobase, const u8 reg_offset, const u16 bit_mask)
{ … }

void vt6655_mac_reg_bits_off(void __iomem *iobase, const u8 reg_offset, const u8 bit_mask)
{ … }

void vt6655_mac_word_reg_bits_off(void __iomem *iobase, const u8 reg_offset, const u16 bit_mask)
{ … }

static void vt6655_mac_clear_stck_ds(void __iomem *iobase)
{ … }

/*
 * Description:
 *      Test if all test bits off
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *      reg_offset - Offset of MAC Register
 *      mask       - Test bits
 *  Out:
 *      none
 *
 * Return Value: true if all test bits Off; otherwise false
 *
 */
static bool vt6655_mac_is_reg_bits_off(struct vnt_private *priv,
				       unsigned char reg_offset,
				       unsigned char mask)
{ … }

/*
 * Description:
 *      Set 802.11 Short Retry Limit
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *      retry_limit - Retry Limit
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void vt6655_mac_set_short_retry_limit(struct vnt_private *priv, unsigned char retry_limit)
{ … }

/*
 * Description:
 *      Set 802.11 Long Retry Limit
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *      byRetryLimit- Retry Limit
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvSetLongRetryLimit(struct vnt_private *priv,
			   unsigned char byRetryLimit)
{ … }

/*
 * Description:
 *      Set MAC Loopback mode
 *
 * Parameters:
 *  In:
 *      io_base        - Base Address for MAC
 *      loopback_mode  - Loopback Mode
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
static void vt6655_mac_set_loopback_mode(struct vnt_private *priv, u8 loopback_mode)
{ … }

/*
 * Description:
 *      Save MAC registers to context buffer
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *  Out:
 *      cxt_buf   - Context buffer
 *
 * Return Value: none
 *
 */
static void vt6655_mac_save_context(struct vnt_private *priv, u8 *cxt_buf)
{ … }

/*
 * Description:
 *      Restore MAC registers from context buffer
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *      cxt_buf   - Context buffer
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
static void vt6655_mac_restore_context(struct vnt_private *priv, u8 *cxt_buf)
{ … }

/*
 * Description:
 *      Software Reset MAC
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *  Out:
 *      none
 *
 * Return Value: true if Reset Success; otherwise false
 *
 */
bool MACbSoftwareReset(struct vnt_private *priv)
{ … }

/*
 * Description:
 *      save some important register's value, then do reset, then restore
 *	register's value
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *  Out:
 *      none
 *
 * Return Value: true if success; otherwise false
 *
 */
static void vt6655_mac_save_soft_reset(struct vnt_private *priv)
{ … }

/*
 * Description:
 *      Turn Off MAC Rx
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *  Out:
 *      none
 *
 * Return Value: true if success; otherwise false
 *
 */
static bool vt6655_mac_safe_rx_off(struct vnt_private *priv)
{ … }

/*
 * Description:
 *      Turn Off MAC Tx
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *  Out:
 *      none
 *
 * Return Value: true if success; otherwise false
 *
 */
static bool vt6655_mac_safe_tx_off(struct vnt_private *priv)
{ … }

/*
 * Description:
 *      Stop MAC function
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *  Out:
 *      none
 *
 * Return Value: true if success; otherwise false
 *
 */
static bool vt6655_mac_safe_stop(struct vnt_private *priv)
{ … }

/*
 * Description:
 *      Shut Down MAC
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *  Out:
 *      none
 *
 * Return Value: true if success; otherwise false
 *
 */
bool MACbShutdown(struct vnt_private *priv)
{ … }

/*
 * Description:
 *      Initialize MAC
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvInitialize(struct vnt_private *priv)
{ … }

/*
 * Description:
 *      Set the chip with current rx descriptor address
 *
 * Parameters:
 *  In:
 *      io_base        - Base Address for MAC
 *      curr_desc_addr  - Descriptor Address
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void vt6655_mac_set_curr_rx_0_desc_addr(struct vnt_private *priv, u32 curr_desc_addr)
{ … }

/*
 * Description:
 *      Set the chip with current rx descriptor address
 *
 * Parameters:
 *  In:
 *      io_base        - Base Address for MAC
 *      curr_desc_addr  - Descriptor Address
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void vt6655_mac_set_curr_rx_1_desc_addr(struct vnt_private *priv, u32 curr_desc_addr)
{ … }

/*
 * Description:
 *      Set the chip with current tx0 descriptor address
 *
 * Parameters:
 *  In:
 *      io_base        - Base Address for MAC
 *      curr_desc_addr  - Descriptor Address
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
static void vt6655_mac_set_curr_tx_0_desc_addr_ex(struct vnt_private *priv, u32 curr_desc_addr)
{ … }

/*
 * Description:
 *      Set the chip with current AC0 descriptor address
 *
 * Parameters:
 *  In:
 *      io_base        - Base Address for MAC
 *      curr_desc_addr  - Descriptor Address
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
/* TxDMA1 = AC0DMA */
static void vt6655_mac_set_curr_ac_0_desc_addr_ex(struct vnt_private *priv, u32 curr_desc_addr)
{ … }

void vt6655_mac_set_curr_tx_desc_addr(int tx_type, struct vnt_private *priv, u32 curr_desc_addr)
{ … }

/*
 * Description:
 *      Micro Second Delay via MAC
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *      uDelay      - Delay time (timer resolution is 4 us)
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvTimer0MicroSDelay(struct vnt_private *priv, unsigned int uDelay)
{ … }

/*
 * Description:
 *      Micro Second One shot timer via MAC
 *
 * Parameters:
 *  In:
 *      io_base    - Base Address for MAC
 *      uDelay      - Delay time
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvOneShotTimer1MicroSec(struct vnt_private *priv,
			       unsigned int uDelayTime)
{ … }

void MACvSetMISCFifo(struct vnt_private *priv, unsigned short offset,
		     u32 data)
{ … }

bool MACbPSWakeup(struct vnt_private *priv)
{ … }

/*
 * Description:
 *      Set the Key by MISCFIFO
 *
 * Parameters:
 *  In:
 *      io_base        - Base Address for MAC
 *
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */

void MACvSetKeyEntry(struct vnt_private *priv, unsigned short wKeyCtl,
		     unsigned int uEntryIdx, unsigned int uKeyIdx,
		     unsigned char *pbyAddr, u32 *pdwKey,
		     unsigned char local_id)
{ … }

/*
 * Description:
 *      Disable the Key Entry by MISCFIFO
 *
 * Parameters:
 *  In:
 *      io_base        - Base Address for MAC
 *
 *  Out:
 *      none
 *
 * Return Value: none
 *
 */
void MACvDisableKeyEntry(struct vnt_private *priv, unsigned int uEntryIdx)
{ … }