![David Howells](/assets/img/avatar_default.png)
Remove all #inclusions of asm/system.h preparatory to splitting and killing it. Performed with the following command: perl -p -i -e 's!^#\s*include\s*<asm/system[.]h>.*\n!!' `grep -Irl '^#\s*include\s*<asm/system[.]h>' *` Signed-off-by: David Howells <dhowells@redhat.com>
1576 lines
51 KiB
C
1576 lines
51 KiB
C
/*******************************************************************************
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* Agere Systems Inc.
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* Wireless device driver for Linux (wlags49).
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*
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* Copyright (c) 1998-2003 Agere Systems Inc.
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* All rights reserved.
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* http://www.agere.com
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*
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* Initially developed by TriplePoint, Inc.
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* http://www.triplepoint.com
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*
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*------------------------------------------------------------------------------
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*
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* This file contains processing and initialization specific to PCI/miniPCI
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* devices.
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*
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*------------------------------------------------------------------------------
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*
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* SOFTWARE LICENSE
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*
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* This software is provided subject to the following terms and conditions,
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* which you should read carefully before using the software. Using this
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* software indicates your acceptance of these terms and conditions. If you do
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* not agree with these terms and conditions, do not use the software.
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*
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* Copyright © 2003 Agere Systems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source or binary forms, with or without
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* modifications, are permitted provided that the following conditions are met:
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*
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* . Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following Disclaimer as comments in the code as
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* well as in the documentation and/or other materials provided with the
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* distribution.
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*
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* . Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following Disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* . Neither the name of Agere Systems Inc. nor the names of the contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* Disclaimer
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*
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* THIS SOFTWARE IS PROVIDED AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY
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* USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
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* RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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******************************************************************************/
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/*******************************************************************************
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* include files
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******************************************************************************/
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#include <wireless/wl_version.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/pci.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/ptrace.h>
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#include <linux/ctype.h>
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#include <linux/string.h>
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//#include <linux/timer.h>
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#include <linux/interrupt.h>
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#include <linux/in.h>
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#include <linux/delay.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/bitops.h>
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#include <asm/uaccess.h>
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#include <linux/ethtool.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/skbuff.h>
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#include <linux/if_arp.h>
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#include <linux/ioport.h>
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#include <hcf/debug.h>
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#include <hcf.h>
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#include <dhf.h>
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#include <hcfdef.h>
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#include <wireless/wl_if.h>
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#include <wireless/wl_internal.h>
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#include <wireless/wl_util.h>
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#include <wireless/wl_main.h>
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#include <wireless/wl_netdev.h>
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#include <wireless/wl_pci.h>
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/*******************************************************************************
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* global variables
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******************************************************************************/
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#if DBG
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extern dbg_info_t *DbgInfo;
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#endif // DBG
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/* define the PCI device Table Cardname and id tables */
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static struct pci_device_id wl_pci_tbl[] __devinitdata = {
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{ PCI_DEVICE(PCI_VENDOR_ID_WL_LKM, PCI_DEVICE_ID_WL_LKM_0), },
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{ PCI_DEVICE(PCI_VENDOR_ID_WL_LKM, PCI_DEVICE_ID_WL_LKM_1), },
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{ PCI_DEVICE(PCI_VENDOR_ID_WL_LKM, PCI_DEVICE_ID_WL_LKM_2), },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(pci, wl_pci_tbl);
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/*******************************************************************************
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* function prototypes
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******************************************************************************/
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int __devinit wl_pci_probe( struct pci_dev *pdev,
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const struct pci_device_id *ent );
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void __devexit wl_pci_remove(struct pci_dev *pdev);
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int wl_pci_setup( struct pci_dev *pdev );
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void wl_pci_enable_cardbus_interrupts( struct pci_dev *pdev );
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#ifdef ENABLE_DMA
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int wl_pci_dma_alloc( struct pci_dev *pdev, struct wl_private *lp );
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int wl_pci_dma_free( struct pci_dev *pdev, struct wl_private *lp );
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int wl_pci_dma_alloc_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
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DESC_STRCT **desc );
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int wl_pci_dma_free_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
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DESC_STRCT **desc );
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int wl_pci_dma_alloc_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
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DESC_STRCT **desc );
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int wl_pci_dma_free_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
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DESC_STRCT **desc );
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int wl_pci_dma_alloc_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
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DESC_STRCT **desc, int size );
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int wl_pci_dma_free_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
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DESC_STRCT **desc );
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int wl_pci_dma_alloc_desc( struct pci_dev *pdev, struct wl_private *lp,
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DESC_STRCT **desc );
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int wl_pci_dma_free_desc( struct pci_dev *pdev, struct wl_private *lp,
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DESC_STRCT **desc );
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int wl_pci_dma_alloc_buf( struct pci_dev *pdev, struct wl_private *lp,
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DESC_STRCT *desc, int size );
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int wl_pci_dma_free_buf( struct pci_dev *pdev, struct wl_private *lp,
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DESC_STRCT *desc );
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void wl_pci_dma_hcf_reclaim_rx( struct wl_private *lp );
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#endif // ENABLE_DMA
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/*******************************************************************************
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* PCI module function registration
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******************************************************************************/
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static struct pci_driver wl_driver =
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{
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name: MODULE_NAME,
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id_table: wl_pci_tbl,
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probe: wl_pci_probe,
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remove: __devexit_p(wl_pci_remove),
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suspend: NULL,
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resume: NULL,
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};
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/*******************************************************************************
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* wl_adapter_init_module()
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*******************************************************************************
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*
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* DESCRIPTION:
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*
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* Called by init_module() to perform PCI-specific driver initialization.
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*
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* PARAMETERS:
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*
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* N/A
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*
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* RETURNS:
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*
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* 0
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*
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******************************************************************************/
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int wl_adapter_init_module( void )
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{
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int result;
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/*------------------------------------------------------------------------*/
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DBG_FUNC( "wl_adapter_init_module()" );
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DBG_ENTER( DbgInfo );
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DBG_TRACE( DbgInfo, "wl_adapter_init_module() -- PCI\n" );
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result = pci_register_driver( &wl_driver ); //;?replace with pci_module_init, Rubini pg 490
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//;? why not do something with the result
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DBG_LEAVE( DbgInfo );
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return 0;
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} // wl_adapter_init_module
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/*============================================================================*/
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/*******************************************************************************
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* wl_adapter_cleanup_module()
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*******************************************************************************
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*
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* DESCRIPTION:
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*
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* Called by cleanup_module() to perform PCI-specific driver cleanup.
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*
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* PARAMETERS:
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*
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* N/A
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*
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* RETURNS:
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*
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* N/A
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*
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******************************************************************************/
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void wl_adapter_cleanup_module( void )
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{
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//;?how comes wl_adapter_cleanup_module is located in a seemingly pci specific module
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DBG_FUNC( "wl_adapter_cleanup_module" );
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DBG_ENTER( DbgInfo );
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//;?DBG_TRACE below feels like nearly redundant in the light of DBG_ENTER above
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DBG_TRACE( DbgInfo, "wl_adapter_cleanup_module() -- PCI\n" );
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pci_unregister_driver( &wl_driver );
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DBG_LEAVE( DbgInfo );
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return;
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} // wl_adapter_cleanup_module
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/*============================================================================*/
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/*******************************************************************************
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* wl_adapter_insert()
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*******************************************************************************
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*
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* DESCRIPTION:
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*
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* Called by wl_pci_probe() to continue the process of device insertion.
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*
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* PARAMETERS:
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*
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* dev - a pointer to the device's net_device structure
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*
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* RETURNS:
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*
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* TRUE or FALSE
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*
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******************************************************************************/
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int wl_adapter_insert( struct net_device *dev )
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{
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int result = FALSE;
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/*------------------------------------------------------------------------*/
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DBG_FUNC( "wl_adapter_insert" );
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DBG_ENTER( DbgInfo );
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DBG_TRACE( DbgInfo, "wl_adapter_insert() -- PCI\n" );
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if( dev == NULL ) {
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DBG_ERROR( DbgInfo, "net_device pointer is NULL!!!\n" );
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} else if( dev->priv == NULL ) {
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DBG_ERROR( DbgInfo, "wl_private pointer is NULL!!!\n" );
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} else if( wl_insert( dev ) ) { /* Perform remaining device initialization */
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result = TRUE;
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} else {
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DBG_TRACE( DbgInfo, "wl_insert() FAILED\n" );
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}
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DBG_LEAVE( DbgInfo );
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return result;
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} // wl_adapter_insert
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/*============================================================================*/
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/*******************************************************************************
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* wl_adapter_open()
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*******************************************************************************
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*
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* DESCRIPTION:
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*
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* Open the device.
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*
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* PARAMETERS:
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*
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* dev - a pointer to the device's net_device structure
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*
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* RETURNS:
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*
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* an HCF status code
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*
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******************************************************************************/
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int wl_adapter_open( struct net_device *dev )
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{
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int result = 0;
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int hcf_status = HCF_SUCCESS;
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/*------------------------------------------------------------------------*/
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DBG_FUNC( "wl_adapter_open" );
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DBG_ENTER( DbgInfo );
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DBG_TRACE( DbgInfo, "wl_adapter_open() -- PCI\n" );
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hcf_status = wl_open( dev );
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if( hcf_status != HCF_SUCCESS ) {
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result = -ENODEV;
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}
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DBG_LEAVE( DbgInfo );
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return result;
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} // wl_adapter_open
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/*============================================================================*/
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/*******************************************************************************
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* wl_adapter_close()
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*******************************************************************************
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*
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* DESCRIPTION:
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*
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* Close the device
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*
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* PARAMETERS:
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*
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* dev - a pointer to the device's net_device structure
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*
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* RETURNS:
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*
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* 0
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*
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******************************************************************************/
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int wl_adapter_close( struct net_device *dev )
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{
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DBG_FUNC( "wl_adapter_close" );
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DBG_ENTER( DbgInfo );
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DBG_TRACE( DbgInfo, "wl_adapter_close() -- PCI\n" );
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DBG_TRACE( DbgInfo, "%s: Shutting down adapter.\n", dev->name );
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wl_close( dev );
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DBG_LEAVE( DbgInfo );
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return 0;
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} // wl_adapter_close
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/*============================================================================*/
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/*******************************************************************************
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* wl_adapter_is_open()
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*******************************************************************************
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*
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* DESCRIPTION:
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*
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* Check whether this device is open. Returns
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*
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* PARAMETERS:
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*
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* dev - a pointer to the device's net_device structure
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*
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* RETURNS:
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*
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* nonzero if device is open.
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*
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******************************************************************************/
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int wl_adapter_is_open( struct net_device *dev )
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{
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/* This function is used in PCMCIA to check the status of the 'open' field
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in the dev_link_t structure associated with a network device. There
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doesn't seem to be an analog to this for PCI, and checking the status
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contained in the net_device structure doesn't have the same effect.
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For now, return TRUE, but find out if this is necessary for PCI. */
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return TRUE;
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} // wl_adapter_is_open
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/*============================================================================*/
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/*******************************************************************************
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* wl_pci_probe()
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*******************************************************************************
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*
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* DESCRIPTION:
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*
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* Registered in the pci_driver structure, this function is called when the
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* PCI subsystem finds a new PCI device which matches the infomation contained
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* in the pci_device_id table.
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*
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* PARAMETERS:
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*
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* pdev - a pointer to the device's pci_dev structure
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* ent - this device's entry in the pci_device_id table
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*
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* RETURNS:
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*
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* 0 on success
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* errno value otherwise
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*
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******************************************************************************/
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int __devinit wl_pci_probe( struct pci_dev *pdev,
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const struct pci_device_id *ent )
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{
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int result;
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/*------------------------------------------------------------------------*/
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DBG_FUNC( "wl_pci_probe" );
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DBG_ENTER( DbgInfo );
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DBG_PRINT( "%s\n", VERSION_INFO );
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result = wl_pci_setup( pdev );
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DBG_LEAVE( DbgInfo );
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return result;
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} // wl_pci_probe
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/*============================================================================*/
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/*******************************************************************************
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* wl_pci_remove()
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*******************************************************************************
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*
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* DESCRIPTION:
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*
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* Registered in the pci_driver structure, this function is called when the
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* PCI subsystem detects that a PCI device which matches the infomation
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* contained in the pci_device_id table has been removed.
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*
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* PARAMETERS:
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*
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* pdev - a pointer to the device's pci_dev structure
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*
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* RETURNS:
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*
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* N/A
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*
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******************************************************************************/
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void __devexit wl_pci_remove(struct pci_dev *pdev)
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{
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struct net_device *dev = NULL;
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/*------------------------------------------------------------------------*/
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DBG_FUNC( "wl_pci_remove" );
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DBG_ENTER( DbgInfo );
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/* Make sure the pci_dev pointer passed in is valid */
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if( pdev == NULL ) {
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DBG_ERROR( DbgInfo, "PCI subsys passed in an invalid pci_dev pointer\n" );
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return;
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}
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dev = pci_get_drvdata( pdev );
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if( dev == NULL ) {
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DBG_ERROR( DbgInfo, "Could not retrieve net_device structure\n" );
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return;
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}
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/* Perform device cleanup */
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wl_remove( dev );
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free_irq( dev->irq, dev );
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#ifdef ENABLE_DMA
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wl_pci_dma_free( pdev, dev->priv );
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#endif
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wl_device_dealloc( dev );
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DBG_LEAVE( DbgInfo );
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return;
|
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} // wl_pci_remove
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/*============================================================================*/
|
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|
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/*******************************************************************************
|
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* wl_pci_setup()
|
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*******************************************************************************
|
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*
|
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* DESCRIPTION:
|
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*
|
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* Called by wl_pci_probe() to begin a device's initialization process.
|
||
*
|
||
* PARAMETERS:
|
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*
|
||
* pdev - a pointer to the device's pci_dev structure
|
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*
|
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* RETURNS:
|
||
*
|
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* 0 on success
|
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* errno value otherwise
|
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*
|
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******************************************************************************/
|
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int wl_pci_setup( struct pci_dev *pdev )
|
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{
|
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int result = 0;
|
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struct net_device *dev = NULL;
|
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struct wl_private *lp = NULL;
|
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/*------------------------------------------------------------------------*/
|
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|
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DBG_FUNC( "wl_pci_setup" );
|
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DBG_ENTER( DbgInfo );
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|
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/* Make sure the pci_dev pointer passed in is valid */
|
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if( pdev == NULL ) {
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DBG_ERROR( DbgInfo, "PCI subsys passed in an invalid pci_dev pointer\n" );
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return -ENODEV;
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}
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result = pci_enable_device( pdev );
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if( result != 0 ) {
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DBG_ERROR( DbgInfo, "pci_enable_device() failed\n" );
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DBG_LEAVE( DbgInfo );
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return result;
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}
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/* We found our device! Let's register it with the system */
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DBG_TRACE( DbgInfo, "Found our device, now registering\n" );
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dev = wl_device_alloc( );
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if( dev == NULL ) {
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DBG_ERROR( DbgInfo, "Could not register device!!!\n" );
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DBG_LEAVE( DbgInfo );
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return -ENOMEM;
|
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}
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|
||
/* Make sure that space was allocated for our private adapter struct */
|
||
if( dev->priv == NULL ) {
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DBG_ERROR( DbgInfo, "Private adapter struct was not allocated!!!\n" );
|
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DBG_LEAVE( DbgInfo );
|
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return -ENOMEM;
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}
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|
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#ifdef ENABLE_DMA
|
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/* Allocate DMA Descriptors */
|
||
if( wl_pci_dma_alloc( pdev, dev->priv ) < 0 ) {
|
||
DBG_ERROR( DbgInfo, "Could not allocate DMA descriptor memory!!!\n" );
|
||
DBG_LEAVE( DbgInfo );
|
||
return -ENOMEM;
|
||
}
|
||
#endif
|
||
|
||
/* Register our private adapter structure with PCI */
|
||
pci_set_drvdata( pdev, dev );
|
||
|
||
/* Fill out bus specific information in the net_device struct */
|
||
dev->irq = pdev->irq;
|
||
SET_MODULE_OWNER( dev );
|
||
|
||
DBG_TRACE( DbgInfo, "Device Base Address: %#03lx\n", pdev->resource[0].start );
|
||
dev->base_addr = pdev->resource[0].start;
|
||
|
||
/* Initialize our device here */
|
||
if( !wl_adapter_insert( dev )) {
|
||
DBG_ERROR( DbgInfo, "wl_adapter_insert() FAILED!!!\n" );
|
||
wl_device_dealloc( dev );
|
||
DBG_LEAVE( DbgInfo );
|
||
return -EINVAL;
|
||
}
|
||
|
||
/* Register our ISR */
|
||
DBG_TRACE( DbgInfo, "Registering ISR...\n" );
|
||
|
||
result = request_irq(dev->irq, wl_isr, SA_SHIRQ, dev->name, dev);
|
||
if( result ) {
|
||
DBG_WARNING( DbgInfo, "Could not register ISR!!!\n" );
|
||
DBG_LEAVE( DbgInfo );
|
||
return result;
|
||
}
|
||
|
||
/* Make sure interrupts are enabled properly for CardBus */
|
||
lp = dev->priv;
|
||
|
||
if( lp->hcfCtx.IFB_BusType == CFG_NIC_BUS_TYPE_CARDBUS ||
|
||
lp->hcfCtx.IFB_BusType == CFG_NIC_BUS_TYPE_PCI ) {
|
||
DBG_TRACE( DbgInfo, "This is a PCI/CardBus card, enable interrupts\n" );
|
||
wl_pci_enable_cardbus_interrupts( pdev );
|
||
}
|
||
|
||
/* Enable bus mastering */
|
||
pci_set_master( pdev );
|
||
|
||
DBG_LEAVE( DbgInfo );
|
||
return 0;
|
||
} // wl_pci_setup
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_enable_cardbus_interrupts()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Called by wl_pci_setup() to enable interrupts on a CardBus device. This
|
||
* is done by writing bit 15 to the function event mask register. This
|
||
* CardBus-specific register is located in BAR2 (counting from BAR0), in memory
|
||
* space at byte offset 1f4 (7f4 for WARP).
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* N/A
|
||
*
|
||
******************************************************************************/
|
||
void wl_pci_enable_cardbus_interrupts( struct pci_dev *pdev )
|
||
{
|
||
u32 bar2_reg;
|
||
u32 mem_addr_bus;
|
||
u32 func_evt_mask_reg;
|
||
void *mem_addr_kern = NULL;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
DBG_FUNC( "wl_pci_enable_cardbus_interrupts" );
|
||
DBG_ENTER( DbgInfo );
|
||
|
||
/* Initialize to known bad values */
|
||
bar2_reg = 0xdeadbeef;
|
||
mem_addr_bus = 0xdeadbeef;
|
||
|
||
/* Read the BAR2 register; this register contains the base address of the
|
||
memory region where the function event mask register lives */
|
||
pci_read_config_dword( pdev, PCI_BASE_ADDRESS_2, &bar2_reg );
|
||
mem_addr_bus = bar2_reg & PCI_BASE_ADDRESS_MEM_MASK;
|
||
|
||
/* Once the base address is obtained, remap the memory region to kernel
|
||
space so we can retrieve the register */
|
||
mem_addr_kern = ioremap( mem_addr_bus, 0x200 );
|
||
|
||
#ifdef HERMES25
|
||
#define REG_OFFSET 0x07F4
|
||
#else
|
||
#define REG_OFFSET 0x01F4
|
||
#endif // HERMES25
|
||
|
||
#define BIT15 0x8000
|
||
|
||
/* Retrieve the functional event mask register, enable interrupts by
|
||
setting Bit 15, and write back the value */
|
||
func_evt_mask_reg = *(u32 *)( mem_addr_kern + REG_OFFSET );
|
||
func_evt_mask_reg |= BIT15;
|
||
*(u32 *)( mem_addr_kern + REG_OFFSET ) = func_evt_mask_reg;
|
||
|
||
/* Once complete, unmap the region and exit */
|
||
iounmap( mem_addr_kern );
|
||
|
||
DBG_LEAVE( DbgInfo );
|
||
return;
|
||
} // wl_pci_enable_cardbus_interrupts
|
||
/*============================================================================*/
|
||
|
||
#ifdef ENABLE_DMA
|
||
/*******************************************************************************
|
||
* wl_pci_dma_alloc()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Allocates all resources needed for PCI/CardBus DMA operation
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_alloc( struct pci_dev *pdev, struct wl_private *lp )
|
||
{
|
||
int i;
|
||
int status = 0;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
DBG_FUNC( "wl_pci_dma_alloc" );
|
||
DBG_ENTER( DbgInfo );
|
||
|
||
// lp->dma.tx_rsc_ind = lp->dma.rx_rsc_ind = 0;
|
||
//
|
||
// /* Alloc for the Tx chain and its reclaim descriptor */
|
||
// for( i = 0; i < NUM_TX_DESC; i++ ) {
|
||
// status = wl_pci_dma_alloc_tx_packet( pdev, lp, &lp->dma.tx_packet[i] );
|
||
// if( status == 0 ) {
|
||
// DBG_PRINT( "lp->dma.tx_packet[%d] : 0x%p\n", i, lp->dma.tx_packet[i] );
|
||
// DBG_PRINT( "lp->dma.tx_packet[%d]->next_desc_addr : 0x%p\n", i, lp->dma.tx_packet[i]->next_desc_addr );
|
||
// lp->dma.tx_rsc_ind++;
|
||
// } else {
|
||
// DBG_ERROR( DbgInfo, "Could not alloc DMA Tx Packet\n" );
|
||
// break;
|
||
// }
|
||
// }
|
||
// if( status == 0 ) {
|
||
// status = wl_pci_dma_alloc_desc( pdev, lp, &lp->dma.tx_reclaim_desc );
|
||
// DBG_PRINT( "lp->dma.tx_reclaim_desc: 0x%p\n", lp->dma.tx_reclaim_desc );
|
||
// }
|
||
// /* Alloc for the Rx chain and its reclaim descriptor */
|
||
// if( status == 0 ) {
|
||
// for( i = 0; i < NUM_RX_DESC; i++ ) {
|
||
// status = wl_pci_dma_alloc_rx_packet( pdev, lp, &lp->dma.rx_packet[i] );
|
||
// if( status == 0 ) {
|
||
// DBG_PRINT( "lp->dma.rx_packet[%d] : 0x%p\n", i, lp->dma.rx_packet[i] );
|
||
// DBG_PRINT( "lp->dma.rx_packet[%d]->next_desc_addr : 0x%p\n", i, lp->dma.rx_packet[i]->next_desc_addr );
|
||
// lp->dma.rx_rsc_ind++;
|
||
// } else {
|
||
// DBG_ERROR( DbgInfo, "Could not alloc DMA Rx Packet\n" );
|
||
// break;
|
||
// }
|
||
// }
|
||
// }
|
||
// if( status == 0 ) {
|
||
// status = wl_pci_dma_alloc_desc( pdev, lp, &lp->dma.rx_reclaim_desc );
|
||
// DBG_PRINT( "lp->dma.rx_reclaim_desc: 0x%p\n", lp->dma.rx_reclaim_desc );
|
||
// }
|
||
// /* Store status, as host should not call HCF functions if this fails */
|
||
// lp->dma.status = status; //;?all useages of dma.status have been commented out
|
||
// DBG_LEAVE( DbgInfo );
|
||
return status;
|
||
} // wl_pci_dma_alloc
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_free()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Deallocated all resources needed for PCI/CardBus DMA operation
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_free( struct pci_dev *pdev, struct wl_private *lp )
|
||
{
|
||
int i;
|
||
int status = 0;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
DBG_FUNC( "wl_pci_dma_free" );
|
||
DBG_ENTER( DbgInfo );
|
||
|
||
/* Reclaim all Rx packets that were handed over to the HCF */
|
||
/* Do I need to do this? Before this free is called, I've already disabled
|
||
the port which will call wl_pci_dma_hcf_reclaim */
|
||
//if( lp->dma.status == 0 )
|
||
//{
|
||
// wl_pci_dma_hcf_reclaim( lp );
|
||
//}
|
||
|
||
/* Free everything needed for DMA Rx */
|
||
for( i = 0; i < NUM_RX_DESC; i++ ) {
|
||
if( lp->dma.rx_packet[i] ) {
|
||
status = wl_pci_dma_free_rx_packet( pdev, lp, &lp->dma.rx_packet[i] );
|
||
if( status != 0 ) {
|
||
DBG_WARNING( DbgInfo, "Problem freeing Rx packet\n" );
|
||
}
|
||
}
|
||
}
|
||
lp->dma.rx_rsc_ind = 0;
|
||
|
||
if( lp->dma.rx_reclaim_desc ) {
|
||
status = wl_pci_dma_free_desc( pdev, lp, &lp->dma.rx_reclaim_desc );
|
||
if( status != 0 ) {
|
||
DBG_WARNING( DbgInfo, "Problem freeing Rx reclaim descriptor\n" );
|
||
}
|
||
}
|
||
|
||
/* Free everything needed for DMA Tx */
|
||
for( i = 0; i < NUM_TX_DESC; i++ ) {
|
||
if( lp->dma.tx_packet[i] ) {
|
||
status = wl_pci_dma_free_tx_packet( pdev, lp, &lp->dma.tx_packet[i] );
|
||
if( status != 0 ) {
|
||
DBG_WARNING( DbgInfo, "Problem freeing Tx packet\n" );
|
||
}
|
||
}
|
||
}
|
||
lp->dma.tx_rsc_ind = 0;
|
||
|
||
if( lp->dma.tx_reclaim_desc ) {
|
||
status = wl_pci_dma_free_desc( pdev, lp, &lp->dma.tx_reclaim_desc );
|
||
if( status != 0 ) {
|
||
DBG_WARNING( DbgInfo, "Problem freeing Tx reclaim descriptor\n" );
|
||
}
|
||
}
|
||
|
||
DBG_LEAVE( DbgInfo );
|
||
return status;
|
||
} // wl_pci_dma_free
|
||
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_alloc_tx_packet()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Allocates a single Tx packet, consisting of several descriptors and
|
||
* buffers. Data to transmit is first copied into the 'payload' buffer
|
||
* before being transmitted.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
* desc - a pointer which will reference the descriptor to be alloc'd.
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_alloc_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
||
DESC_STRCT **desc )
|
||
{
|
||
// int status = 0;
|
||
// /*------------------------------------------------------------------------*/
|
||
//
|
||
// if( desc == NULL ) {
|
||
// status = -EFAULT;
|
||
// }
|
||
// if( status == 0 ) {
|
||
// status = wl_pci_dma_alloc_desc_and_buf( pdev, lp, desc,
|
||
// HCF_DMA_TX_BUF1_SIZE );
|
||
//
|
||
// if( status == 0 ) {
|
||
// status = wl_pci_dma_alloc_desc_and_buf( pdev, lp,
|
||
// &( (*desc)->next_desc_addr ),
|
||
// HCF_MAX_PACKET_SIZE );
|
||
// }
|
||
// }
|
||
// if( status == 0 ) {
|
||
// (*desc)->next_desc_phys_addr = (*desc)->next_desc_addr->desc_phys_addr;
|
||
// }
|
||
// return status;
|
||
} // wl_pci_dma_alloc_tx_packet
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_free_tx_packet()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Frees a single Tx packet, described in the corresponding alloc function.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
* desc - a pointer which will reference the descriptor to be alloc'd.
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_free_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
||
DESC_STRCT **desc )
|
||
{
|
||
int status = 0;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
if( *desc == NULL ) {
|
||
DBG_PRINT( "Null descriptor\n" );
|
||
status = -EFAULT;
|
||
}
|
||
//;?the "limited" NDIS strategy, assuming a frame consists ALWAYS out of 2
|
||
//descriptors, make this robust
|
||
if( status == 0 && (*desc)->next_desc_addr ) {
|
||
status = wl_pci_dma_free_desc_and_buf( pdev, lp, &(*desc)->next_desc_addr );
|
||
}
|
||
if( status == 0 ) {
|
||
status = wl_pci_dma_free_desc_and_buf( pdev, lp, desc );
|
||
}
|
||
return status;
|
||
} // wl_pci_dma_free_tx_packet
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_alloc_rx_packet()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Allocates a single Rx packet, consisting of two descriptors and one
|
||
* contiguous buffer. THe buffer starts with the hermes-specific header.
|
||
* One descriptor points at the start, the other at offset 0x3a of the
|
||
* buffer.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
* desc - a pointer which will reference the descriptor to be alloc'd.
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_alloc_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
||
DESC_STRCT **desc )
|
||
{
|
||
int status = 0;
|
||
DESC_STRCT *p;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
// if( desc == NULL ) {
|
||
// status = -EFAULT;
|
||
// }
|
||
// //;?the "limited" NDIS strategy, assuming a frame consists ALWAYS out of 2
|
||
// //descriptors, make this robust
|
||
// if( status == 0 ) {
|
||
// status = wl_pci_dma_alloc_desc( pdev, lp, desc );
|
||
// }
|
||
// if( status == 0 ) {
|
||
// status = wl_pci_dma_alloc_buf( pdev, lp, *desc, HCF_MAX_PACKET_SIZE );
|
||
// }
|
||
// if( status == 0 ) {
|
||
// status = wl_pci_dma_alloc_desc( pdev, lp, &p );
|
||
// }
|
||
// if( status == 0 ) {
|
||
// /* Size of 1st descriptor becomes 0x3a bytes */
|
||
// SET_BUF_SIZE( *desc, HCF_DMA_RX_BUF1_SIZE );
|
||
//
|
||
// /* Make 2nd descriptor point at offset 0x3a of the buffer */
|
||
// SET_BUF_SIZE( p, ( HCF_MAX_PACKET_SIZE - HCF_DMA_RX_BUF1_SIZE ));
|
||
// p->buf_addr = (*desc)->buf_addr + HCF_DMA_RX_BUF1_SIZE;
|
||
// p->buf_phys_addr = (*desc)->buf_phys_addr + HCF_DMA_RX_BUF1_SIZE;
|
||
// p->next_desc_addr = NULL;
|
||
//
|
||
// /* Chain 2nd descriptor to 1st descriptor */
|
||
// (*desc)->next_desc_addr = p;
|
||
// (*desc)->next_desc_phys_addr = p->desc_phys_addr;
|
||
// }
|
||
|
||
return status;
|
||
} // wl_pci_dma_alloc_rx_packet
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_free_rx_packet()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Frees a single Rx packet, described in the corresponding alloc function.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
* desc - a pointer which will reference the descriptor to be alloc'd.
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_free_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
||
DESC_STRCT **desc )
|
||
{
|
||
int status = 0;
|
||
DESC_STRCT *p;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
if( *desc == NULL ) {
|
||
status = -EFAULT;
|
||
}
|
||
if( status == 0 ) {
|
||
p = (*desc)->next_desc_addr;
|
||
|
||
/* Free the 2nd descriptor */
|
||
if( p != NULL ) {
|
||
p->buf_addr = NULL;
|
||
p->buf_phys_addr = 0;
|
||
|
||
status = wl_pci_dma_free_desc( pdev, lp, &p );
|
||
}
|
||
}
|
||
|
||
/* Free the buffer and 1st descriptor */
|
||
if( status == 0 ) {
|
||
SET_BUF_SIZE( *desc, HCF_MAX_PACKET_SIZE );
|
||
status = wl_pci_dma_free_desc_and_buf( pdev, lp, desc );
|
||
}
|
||
return status;
|
||
} // wl_pci_dma_free_rx_packet
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_alloc_desc_and_buf()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Allocates a DMA descriptor and buffer, and associates them with one
|
||
* another.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
* desc - a pointer which will reference the descriptor to be alloc'd
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_alloc_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
|
||
DESC_STRCT **desc, int size )
|
||
{
|
||
int status = 0;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
// if( desc == NULL ) {
|
||
// status = -EFAULT;
|
||
// }
|
||
// if( status == 0 ) {
|
||
// status = wl_pci_dma_alloc_desc( pdev, lp, desc );
|
||
//
|
||
// if( status == 0 ) {
|
||
// status = wl_pci_dma_alloc_buf( pdev, lp, *desc, size );
|
||
// }
|
||
// }
|
||
return status;
|
||
} // wl_pci_dma_alloc_desc_and_buf
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_free_desc_and_buf()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Frees a DMA descriptor and associated buffer.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
* desc - a pointer which will reference the descriptor to be alloc'd
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_free_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
|
||
DESC_STRCT **desc )
|
||
{
|
||
int status = 0;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
if( desc == NULL ) {
|
||
status = -EFAULT;
|
||
}
|
||
if( status == 0 && *desc == NULL ) {
|
||
status = -EFAULT;
|
||
}
|
||
if( status == 0 ) {
|
||
status = wl_pci_dma_free_buf( pdev, lp, *desc );
|
||
|
||
if( status == 0 ) {
|
||
status = wl_pci_dma_free_desc( pdev, lp, desc );
|
||
}
|
||
}
|
||
return status;
|
||
} // wl_pci_dma_free_desc_and_buf
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_alloc_desc()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Allocates one DMA descriptor in cache coherent memory.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_alloc_desc( struct pci_dev *pdev, struct wl_private *lp,
|
||
DESC_STRCT **desc )
|
||
{
|
||
// int status = 0;
|
||
// dma_addr_t pa;
|
||
// /*------------------------------------------------------------------------*/
|
||
//
|
||
// DBG_FUNC( "wl_pci_dma_alloc_desc" );
|
||
// DBG_ENTER( DbgInfo );
|
||
//
|
||
// if( desc == NULL ) {
|
||
// status = -EFAULT;
|
||
// }
|
||
// if( status == 0 ) {
|
||
// *desc = pci_alloc_consistent( pdev, sizeof( DESC_STRCT ), &pa );
|
||
// }
|
||
// if( *desc == NULL ) {
|
||
// DBG_ERROR( DbgInfo, "pci_alloc_consistent() failed\n" );
|
||
// status = -ENOMEM;
|
||
// } else {
|
||
// memset( *desc, 0, sizeof( DESC_STRCT ));
|
||
// (*desc)->desc_phys_addr = cpu_to_le32( pa );
|
||
// }
|
||
// DBG_LEAVE( DbgInfo );
|
||
// return status;
|
||
} // wl_pci_dma_alloc_desc
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_free_desc()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Frees one DMA descriptor in cache coherent memory.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_free_desc( struct pci_dev *pdev, struct wl_private *lp,
|
||
DESC_STRCT **desc )
|
||
{
|
||
int status = 0;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
if( *desc == NULL ) {
|
||
status = -EFAULT;
|
||
}
|
||
if( status == 0 ) {
|
||
pci_free_consistent( pdev, sizeof( DESC_STRCT ), *desc,
|
||
(*desc)->desc_phys_addr );
|
||
}
|
||
*desc = NULL;
|
||
return status;
|
||
} // wl_pci_dma_free_desc
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_alloc_buf()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Allocates one DMA buffer in cache coherent memory, and associates a DMA
|
||
* descriptor with this buffer.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_alloc_buf( struct pci_dev *pdev, struct wl_private *lp,
|
||
DESC_STRCT *desc, int size )
|
||
{
|
||
int status = 0;
|
||
dma_addr_t pa;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
// DBG_FUNC( "wl_pci_dma_alloc_buf" );
|
||
// DBG_ENTER( DbgInfo );
|
||
//
|
||
// if( desc == NULL ) {
|
||
// status = -EFAULT;
|
||
// }
|
||
// if( status == 0 && desc->buf_addr != NULL ) {
|
||
// status = -EFAULT;
|
||
// }
|
||
// if( status == 0 ) {
|
||
// desc->buf_addr = pci_alloc_consistent( pdev, size, &pa );
|
||
// }
|
||
// if( desc->buf_addr == NULL ) {
|
||
// DBG_ERROR( DbgInfo, "pci_alloc_consistent() failed\n" );
|
||
// status = -ENOMEM;
|
||
// } else {
|
||
// desc->buf_phys_addr = cpu_to_le32( pa );
|
||
// SET_BUF_SIZE( desc, size );
|
||
// }
|
||
// DBG_LEAVE( DbgInfo );
|
||
return status;
|
||
} // wl_pci_dma_alloc_buf
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_free_buf()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Allocates one DMA buffer in cache coherent memory, and associates a DMA
|
||
* descriptor with this buffer.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* pdev - a pointer to the device's pci_dev structure
|
||
* lp - the device's private adapter structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
int wl_pci_dma_free_buf( struct pci_dev *pdev, struct wl_private *lp,
|
||
DESC_STRCT *desc )
|
||
{
|
||
int status = 0;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
if( desc == NULL ) {
|
||
status = -EFAULT;
|
||
}
|
||
if( status == 0 && desc->buf_addr == NULL ) {
|
||
status = -EFAULT;
|
||
}
|
||
if( status == 0 ) {
|
||
pci_free_consistent( pdev, GET_BUF_SIZE( desc ), desc->buf_addr,
|
||
desc->buf_phys_addr );
|
||
|
||
desc->buf_addr = 0;
|
||
desc->buf_phys_addr = 0;
|
||
SET_BUF_SIZE( desc, 0 );
|
||
}
|
||
return status;
|
||
} // wl_pci_dma_free_buf
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_hcf_supply()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Supply HCF with DMA-related resources. These consist of:
|
||
* - buffers and descriptors for receive purposes
|
||
* - one 'reclaim' descriptor for the transmit path, used to fulfill a
|
||
* certain H25 DMA engine requirement
|
||
* - one 'reclaim' descriptor for the receive path, used to fulfill a
|
||
* certain H25 DMA engine requirement
|
||
*
|
||
* This function is called at start-of-day or at re-initialization.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* lp - the device's private adapter structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
void wl_pci_dma_hcf_supply( struct wl_private *lp )
|
||
{
|
||
int i;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
DBG_FUNC( "wl_pci_dma_hcf_supply" );
|
||
DBG_ENTER( DbgInfo );
|
||
|
||
//if( lp->dma.status == 0 );
|
||
//{
|
||
/* Hand over the Rx/Tx reclaim descriptors to the HCF */
|
||
if( lp->dma.tx_reclaim_desc ) {
|
||
DBG_PRINT( "lp->dma.tx_reclaim_desc: 0x%p\n", lp->dma.tx_reclaim_desc );
|
||
hcf_dma_tx_put( &lp->hcfCtx, lp->dma.tx_reclaim_desc, 0 );
|
||
lp->dma.tx_reclaim_desc = NULL;
|
||
DBG_PRINT( "lp->dma.tx_reclaim_desc: 0x%p\n", lp->dma.tx_reclaim_desc );
|
||
}
|
||
if( lp->dma.rx_reclaim_desc ) {
|
||
DBG_PRINT( "lp->dma.rx_reclaim_desc: 0x%p\n", lp->dma.rx_reclaim_desc );
|
||
hcf_dma_rx_put( &lp->hcfCtx, lp->dma.rx_reclaim_desc );
|
||
lp->dma.rx_reclaim_desc = NULL;
|
||
DBG_PRINT( "lp->dma.rx_reclaim_desc: 0x%p\n", lp->dma.rx_reclaim_desc );
|
||
}
|
||
/* Hand over the Rx descriptor chain to the HCF */
|
||
for( i = 0; i < NUM_RX_DESC; i++ ) {
|
||
DBG_PRINT( "lp->dma.rx_packet[%d]: 0x%p\n", i, lp->dma.rx_packet[i] );
|
||
hcf_dma_rx_put( &lp->hcfCtx, lp->dma.rx_packet[i] );
|
||
lp->dma.rx_packet[i] = NULL;
|
||
DBG_PRINT( "lp->dma.rx_packet[%d]: 0x%p\n", i, lp->dma.rx_packet[i] );
|
||
}
|
||
//}
|
||
|
||
DBG_LEAVE( DbgInfo );
|
||
return;
|
||
} // wl_pci_dma_hcf_supply
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_hcf_reclaim()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Return DMA-related resources from the HCF. These consist of:
|
||
* - buffers and descriptors for receive purposes
|
||
* - buffers and descriptors for transmit purposes
|
||
* - one 'reclaim' descriptor for the transmit path, used to fulfill a
|
||
* certain H25 DMA engine requirement
|
||
* - one 'reclaim' descriptor for the receive path, used to fulfill a
|
||
* certain H25 DMA engine requirement
|
||
*
|
||
* This function is called at end-of-day or at re-initialization.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* lp - the device's private adapter structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
void wl_pci_dma_hcf_reclaim( struct wl_private *lp )
|
||
{
|
||
int i;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
DBG_FUNC( "wl_pci_dma_hcf_reclaim" );
|
||
DBG_ENTER( DbgInfo );
|
||
|
||
wl_pci_dma_hcf_reclaim_rx( lp );
|
||
for( i = 0; i < NUM_RX_DESC; i++ ) {
|
||
DBG_PRINT( "rx_packet[%d] 0x%p\n", i, lp->dma.rx_packet[i] );
|
||
// if( lp->dma.rx_packet[i] == NULL ) {
|
||
// DBG_PRINT( "wl_pci_dma_hcf_reclaim: rx_packet[%d] NULL\n", i );
|
||
// }
|
||
}
|
||
|
||
wl_pci_dma_hcf_reclaim_tx( lp );
|
||
for( i = 0; i < NUM_TX_DESC; i++ ) {
|
||
DBG_PRINT( "tx_packet[%d] 0x%p\n", i, lp->dma.tx_packet[i] );
|
||
// if( lp->dma.tx_packet[i] == NULL ) {
|
||
// DBG_PRINT( "wl_pci_dma_hcf_reclaim: tx_packet[%d] NULL\n", i );
|
||
// }
|
||
}
|
||
|
||
DBG_LEAVE( DbgInfo );
|
||
return;
|
||
} // wl_pci_dma_hcf_reclaim
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_hcf_reclaim_rx()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Reclaim Rx packets that have already been processed by the HCF.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* lp - the device's private adapter structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
void wl_pci_dma_hcf_reclaim_rx( struct wl_private *lp )
|
||
{
|
||
int i;
|
||
DESC_STRCT *p;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
DBG_FUNC( "wl_pci_dma_hcf_reclaim_rx" );
|
||
DBG_ENTER( DbgInfo );
|
||
|
||
//if( lp->dma.status == 0 )
|
||
//{
|
||
while ( ( p = hcf_dma_rx_get( &lp->hcfCtx ) ) != NULL ) {
|
||
if( p && p->buf_addr == NULL ) {
|
||
/* A reclaim descriptor is being given back by the HCF. Reclaim
|
||
descriptors have a NULL buf_addr */
|
||
lp->dma.rx_reclaim_desc = p;
|
||
DBG_PRINT( "reclaim_descriptor: 0x%p\n", p );
|
||
continue;
|
||
}
|
||
for( i = 0; i < NUM_RX_DESC; i++ ) {
|
||
if( lp->dma.rx_packet[i] == NULL ) {
|
||
break;
|
||
}
|
||
}
|
||
/* An Rx buffer descriptor is being given back by the HCF */
|
||
lp->dma.rx_packet[i] = p;
|
||
lp->dma.rx_rsc_ind++;
|
||
DBG_PRINT( "rx_packet[%d] 0x%p\n", i, lp->dma.rx_packet[i] );
|
||
}
|
||
//}
|
||
DBG_LEAVE( DbgInfo );
|
||
} // wl_pci_dma_hcf_reclaim_rx
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_get_tx_packet()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Obtains a Tx descriptor from the chain to use for Tx.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* lp - a pointer to the device's wl_private structure.
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* A pointer to the retrieved descriptor
|
||
*
|
||
******************************************************************************/
|
||
DESC_STRCT * wl_pci_dma_get_tx_packet( struct wl_private *lp )
|
||
{
|
||
int i;
|
||
DESC_STRCT *desc = NULL;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
for( i = 0; i < NUM_TX_DESC; i++ ) {
|
||
if( lp->dma.tx_packet[i] ) {
|
||
break;
|
||
}
|
||
}
|
||
|
||
if( i != NUM_TX_DESC ) {
|
||
desc = lp->dma.tx_packet[i];
|
||
|
||
lp->dma.tx_packet[i] = NULL;
|
||
lp->dma.tx_rsc_ind--;
|
||
|
||
memset( desc->buf_addr, 0, HCF_DMA_TX_BUF1_SIZE );
|
||
}
|
||
|
||
return desc;
|
||
} // wl_pci_dma_get_tx_packet
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_put_tx_packet()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Returns a Tx descriptor to the chain.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* lp - a pointer to the device's wl_private structure.
|
||
* desc - a pointer to the descriptor to return.
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* N/A
|
||
*
|
||
******************************************************************************/
|
||
void wl_pci_dma_put_tx_packet( struct wl_private *lp, DESC_STRCT *desc )
|
||
{
|
||
int i;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
for( i = 0; i < NUM_TX_DESC; i++ ) {
|
||
if( lp->dma.tx_packet[i] == NULL ) {
|
||
break;
|
||
}
|
||
}
|
||
|
||
if( i != NUM_TX_DESC ) {
|
||
lp->dma.tx_packet[i] = desc;
|
||
lp->dma.tx_rsc_ind++;
|
||
}
|
||
} // wl_pci_dma_put_tx_packet
|
||
/*============================================================================*/
|
||
|
||
/*******************************************************************************
|
||
* wl_pci_dma_hcf_reclaim_tx()
|
||
*******************************************************************************
|
||
*
|
||
* DESCRIPTION:
|
||
*
|
||
* Reclaim Tx packets that have either been processed by the HCF due to a
|
||
* port disable or a Tx completion.
|
||
*
|
||
* PARAMETERS:
|
||
*
|
||
* lp - the device's private adapter structure
|
||
*
|
||
* RETURNS:
|
||
*
|
||
* 0 on success
|
||
* errno value otherwise
|
||
*
|
||
******************************************************************************/
|
||
void wl_pci_dma_hcf_reclaim_tx( struct wl_private *lp )
|
||
{
|
||
int i;
|
||
DESC_STRCT *p;
|
||
/*------------------------------------------------------------------------*/
|
||
|
||
DBG_FUNC( "wl_pci_dma_hcf_reclaim_tx" );
|
||
DBG_ENTER( DbgInfo );
|
||
|
||
//if( lp->dma.status == 0 )
|
||
//{
|
||
while ( ( p = hcf_dma_tx_get( &lp->hcfCtx ) ) != NULL ) {
|
||
|
||
if( p != NULL && p->buf_addr == NULL ) {
|
||
/* A Reclaim descriptor is being given back by the HCF. Reclaim
|
||
descriptors have a NULL buf_addr */
|
||
lp->dma.tx_reclaim_desc = p;
|
||
DBG_PRINT( "reclaim_descriptor: 0x%p\n", p );
|
||
continue;
|
||
}
|
||
for( i = 0; i < NUM_TX_DESC; i++ ) {
|
||
if( lp->dma.tx_packet[i] == NULL ) {
|
||
break;
|
||
}
|
||
}
|
||
/* An Rx buffer descriptor is being given back by the HCF */
|
||
lp->dma.tx_packet[i] = p;
|
||
lp->dma.tx_rsc_ind++;
|
||
DBG_PRINT( "tx_packet[%d] 0x%p\n", i, lp->dma.tx_packet[i] );
|
||
}
|
||
//}
|
||
|
||
if( lp->netif_queue_on == FALSE ) {
|
||
netif_wake_queue( lp->dev );
|
||
WL_WDS_NETIF_WAKE_QUEUE( lp );
|
||
lp->netif_queue_on = TRUE;
|
||
}
|
||
DBG_LEAVE( DbgInfo );
|
||
return;
|
||
} // wl_pci_dma_hcf_reclaim_tx
|
||
/*============================================================================*/
|
||
#endif // ENABLE_DMA
|