diff options
Diffstat (limited to 'drivers/staging/wlags49_h2/wl_pci.c')
| -rw-r--r-- | drivers/staging/wlags49_h2/wl_pci.c | 1578 |
1 files changed, 0 insertions, 1578 deletions
diff --git a/drivers/staging/wlags49_h2/wl_pci.c b/drivers/staging/wlags49_h2/wl_pci.c deleted file mode 100644 index 6226e5eebf3a..000000000000 --- a/drivers/staging/wlags49_h2/wl_pci.c +++ /dev/null @@ -1,1578 +0,0 @@ -/******************************************************************************* - * Agere Systems Inc. - * Wireless device driver for Linux (wlags49). - * - * Copyright (c) 1998-2003 Agere Systems Inc. - * All rights reserved. - * http://www.agere.com - * - * Initially developed by TriplePoint, Inc. - * http://www.triplepoint.com - * - *------------------------------------------------------------------------------ - * - * This file contains processing and initialization specific to PCI/miniPCI - * devices. - * - *------------------------------------------------------------------------------ - * - * SOFTWARE LICENSE - * - * This software is provided subject to the following terms and conditions, - * which you should read carefully before using the software. Using this - * software indicates your acceptance of these terms and conditions. If you do - * not agree with these terms and conditions, do not use the software. - * - * Copyright © 2003 Agere Systems Inc. - * All rights reserved. - * - * Redistribution and use in source or binary forms, with or without - * modifications, are permitted provided that the following conditions are met: - * - * . Redistributions of source code must retain the above copyright notice, this - * list of conditions and the following Disclaimer as comments in the code as - * well as in the documentation and/or other materials provided with the - * distribution. - * - * . Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following Disclaimer in the documentation - * and/or other materials provided with the distribution. - * - * . Neither the name of Agere Systems Inc. nor the names of the contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * Disclaimer - * - * THIS SOFTWARE IS PROVIDED AS IS AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY - * USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN - * RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY - * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH - * DAMAGE. - * - ******************************************************************************/ - -/******************************************************************************* - * include files - ******************************************************************************/ -#include <wireless/wl_version.h> - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/errno.h> -#include <linux/pci.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/ptrace.h> -#include <linux/ctype.h> -#include <linux/string.h> -//#include <linux/timer.h> -#include <linux/interrupt.h> -#include <linux/in.h> -#include <linux/delay.h> -#include <asm/io.h> -#include <asm/irq.h> -#include <asm/bitops.h> -#include <asm/uaccess.h> - -#include <linux/ethtool.h> -#include <linux/netdevice.h> -#include <linux/etherdevice.h> -#include <linux/skbuff.h> -#include <linux/if_arp.h> -#include <linux/ioport.h> - -#include <hcf/debug.h> - -#include <hcf.h> -#include <dhf.h> -#include <hcfdef.h> - -#include <wireless/wl_if.h> -#include <wireless/wl_internal.h> -#include <wireless/wl_util.h> -#include <wireless/wl_main.h> -#include <wireless/wl_netdev.h> -#include <wireless/wl_pci.h> - - -/******************************************************************************* - * global variables - ******************************************************************************/ -#if DBG -extern dbg_info_t *DbgInfo; -#endif // DBG - -/* define the PCI device Table Cardname and id tables */ -static struct pci_device_id wl_pci_tbl[] = { - { PCI_DEVICE(PCI_VENDOR_ID_WL_LKM, PCI_DEVICE_ID_WL_LKM_0), }, - { PCI_DEVICE(PCI_VENDOR_ID_WL_LKM, PCI_DEVICE_ID_WL_LKM_1), }, - { PCI_DEVICE(PCI_VENDOR_ID_WL_LKM, PCI_DEVICE_ID_WL_LKM_2), }, - - { } /* Terminating entry */ -}; - -MODULE_DEVICE_TABLE(pci, wl_pci_tbl); - -/******************************************************************************* - * function prototypes - ******************************************************************************/ -int wl_pci_probe( struct pci_dev *pdev, - const struct pci_device_id *ent ); -void wl_pci_remove(struct pci_dev *pdev); -int wl_pci_setup( struct pci_dev *pdev ); -void wl_pci_enable_cardbus_interrupts( struct pci_dev *pdev ); - -#ifdef ENABLE_DMA -int wl_pci_dma_alloc( struct pci_dev *pdev, struct wl_private *lp ); -int wl_pci_dma_free( struct pci_dev *pdev, struct wl_private *lp ); -int wl_pci_dma_alloc_tx_packet( struct pci_dev *pdev, struct wl_private *lp, - DESC_STRCT **desc ); -int wl_pci_dma_free_tx_packet( struct pci_dev *pdev, struct wl_private *lp, - DESC_STRCT **desc ); -int wl_pci_dma_alloc_rx_packet( struct pci_dev *pdev, struct wl_private *lp, - DESC_STRCT **desc ); -int wl_pci_dma_free_rx_packet( struct pci_dev *pdev, struct wl_private *lp, - DESC_STRCT **desc ); -int wl_pci_dma_alloc_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp, - DESC_STRCT **desc, int size ); -int wl_pci_dma_free_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp, - DESC_STRCT **desc ); -int wl_pci_dma_alloc_desc( struct pci_dev *pdev, struct wl_private *lp, - DESC_STRCT **desc ); -int wl_pci_dma_free_desc( struct pci_dev *pdev, struct wl_private *lp, - DESC_STRCT **desc ); -int wl_pci_dma_alloc_buf( struct pci_dev *pdev, struct wl_private *lp, - DESC_STRCT *desc, int size ); -int wl_pci_dma_free_buf( struct pci_dev *pdev, struct wl_private *lp, - DESC_STRCT *desc ); - -void wl_pci_dma_hcf_reclaim_rx( struct wl_private *lp ); -#endif // ENABLE_DMA - -/******************************************************************************* - * PCI module function registration - ******************************************************************************/ -static struct pci_driver wl_driver = { - .name = MODULE_NAME, - .id_table = wl_pci_tbl, - .probe = wl_pci_probe, - .remove = wl_pci_remove, - .suspend = NULL, - .resume = NULL -}; - -/******************************************************************************* - * wl_adapter_init_module() - ******************************************************************************* - * - * DESCRIPTION: - * - * Called by init_module() to perform PCI-specific driver initialization. - * - * PARAMETERS: - * - * N/A - * - * RETURNS: - * - * 0 - * - ******************************************************************************/ -int wl_adapter_init_module( void ) -{ - int result; - /*------------------------------------------------------------------------*/ - - DBG_FUNC( "wl_adapter_init_module()" ); - DBG_ENTER( DbgInfo ); - DBG_TRACE( DbgInfo, "wl_adapter_init_module() -- PCI\n" ); - - result = pci_register_driver( &wl_driver ); //;?replace with pci_module_init, Rubini pg 490 - //;? why not do something with the result - - DBG_LEAVE( DbgInfo ); - return 0; -} // wl_adapter_init_module -/*============================================================================*/ - -/******************************************************************************* - * wl_adapter_cleanup_module() - ******************************************************************************* - * - * DESCRIPTION: - * - * Called by cleanup_module() to perform PCI-specific driver cleanup. - * - * PARAMETERS: - * - * N/A - * - * RETURNS: - * - * N/A - * - ******************************************************************************/ -void wl_adapter_cleanup_module( void ) -{ - //;?how come wl_adapter_cleanup_module is located in a seemingly pci specific module - DBG_FUNC( "wl_adapter_cleanup_module" ); - DBG_ENTER( DbgInfo ); - - //;?DBG_TRACE below feels like nearly redundant in the light of DBG_ENTER above - DBG_TRACE( DbgInfo, "wl_adapter_cleanup_module() -- PCI\n" ); - - pci_unregister_driver( &wl_driver ); - - DBG_LEAVE( DbgInfo ); - return; -} // wl_adapter_cleanup_module -/*============================================================================*/ - -/******************************************************************************* - * wl_adapter_insert() - ******************************************************************************* - * - * DESCRIPTION: - * - * Called by wl_pci_probe() to continue the process of device insertion. - * - * PARAMETERS: - * - * dev - a pointer to the device's net_device structure - * - * RETURNS: - * - * TRUE or FALSE - * - ******************************************************************************/ -int wl_adapter_insert( struct net_device *dev ) -{ - int result = FALSE; - /*------------------------------------------------------------------------*/ - - DBG_FUNC( "wl_adapter_insert" ); - DBG_ENTER( DbgInfo ); - - DBG_TRACE( DbgInfo, "wl_adapter_insert() -- PCI\n" ); - - if( dev == NULL ) { - DBG_ERROR( DbgInfo, "net_device pointer is NULL!!!\n" ); - } else if( dev->priv == NULL ) { - DBG_ERROR( DbgInfo, "wl_private pointer is NULL!!!\n" ); - } else if( wl_insert( dev ) ) { /* Perform remaining device initialization */ - result = TRUE; - } else { - DBG_TRACE( DbgInfo, "wl_insert() FAILED\n" ); - } - DBG_LEAVE( DbgInfo ); - return result; -} // wl_adapter_insert -/*============================================================================*/ - -/******************************************************************************* - * wl_adapter_open() - ******************************************************************************* - * - * DESCRIPTION: - * - * Open the device. - * - * PARAMETERS: - * - * dev - a pointer to the device's net_device structure - * - * RETURNS: - * - * an HCF status code - * - ******************************************************************************/ -int wl_adapter_open( struct net_device *dev ) -{ - int result = 0; - int hcf_status = HCF_SUCCESS; - /*------------------------------------------------------------------------*/ - - DBG_FUNC( "wl_adapter_open" ); - DBG_ENTER( DbgInfo ); - - DBG_TRACE( DbgInfo, "wl_adapter_open() -- PCI\n" ); - - hcf_status = wl_open( dev ); - - if( hcf_status != HCF_SUCCESS ) { - result = -ENODEV; - } - - DBG_LEAVE( DbgInfo ); - return result; -} // wl_adapter_open -/*============================================================================*/ - -/******************************************************************************* - * wl_adapter_close() - ******************************************************************************* - * - * DESCRIPTION: - * - * Close the device - * - * PARAMETERS: - * - * dev - a pointer to the device's net_device structure - * - * RETURNS: - * - * 0 - * - ******************************************************************************/ -int wl_adapter_close( struct net_device *dev ) -{ - DBG_FUNC( "wl_adapter_close" ); - DBG_ENTER( DbgInfo ); - - DBG_TRACE( DbgInfo, "wl_adapter_close() -- PCI\n" ); - DBG_TRACE( DbgInfo, "%s: Shutting down adapter.\n", dev->name ); - - wl_close( dev ); - - DBG_LEAVE( DbgInfo ); - return 0; -} // wl_adapter_close -/*============================================================================*/ - -/******************************************************************************* - * wl_adapter_is_open() - ******************************************************************************* - * - * DESCRIPTION: - * - * Check whether this device is open. Returns - * - * PARAMETERS: - * - * dev - a pointer to the device's net_device structure - * - * RETURNS: - * - * nonzero if device is open. - * - ******************************************************************************/ -int wl_adapter_is_open( struct net_device *dev ) -{ - /* This function is used in PCMCIA to check the status of the 'open' field - in the dev_link_t structure associated with a network device. There - doesn't seem to be an analog to this for PCI, and checking the status - contained in the net_device structure doesn't have the same effect. - For now, return TRUE, but find out if this is necessary for PCI. */ - - return TRUE; -} // wl_adapter_is_open -/*============================================================================*/ - -/******************************************************************************* - * wl_pci_probe() - ******************************************************************************* - * - * DESCRIPTION: - * - * Registered in the pci_driver structure, this function is called when the - * PCI subsystem finds a new PCI device which matches the information contained - * in the pci_device_id table. - * - * PARAMETERS: - * - * pdev - a pointer to the device's pci_dev structure - * ent - this device's entry in the pci_device_id table - * - * RETURNS: - * - * 0 on success - * errno value otherwise - * - ******************************************************************************/ -int wl_pci_probe( struct pci_dev *pdev, - const struct pci_device_id *ent ) -{ - int result; - /*------------------------------------------------------------------------*/ - - DBG_FUNC( "wl_pci_probe" ); - DBG_ENTER( DbgInfo ); - DBG_PRINT( "%s\n", VERSION_INFO ); - - result = wl_pci_setup( pdev ); - - DBG_LEAVE( DbgInfo ); - - return result; -} // wl_pci_probe -/*============================================================================*/ - -/******************************************************************************* - * wl_pci_remove() - ******************************************************************************* - * - * DESCRIPTION: - * - * Registered in the pci_driver structure, this function is called when the - * PCI subsystem detects that a PCI device which matches the information - * contained in the pci_device_id table has been removed. - * - * PARAMETERS: - * - * pdev - a pointer to the device's pci_dev structure - * - * RETURNS: - * - * N/A - * - ******************************************************************************/ -void wl_pci_remove(struct pci_dev *pdev) -{ - struct net_device *dev = NULL; - /*------------------------------------------------------------------------*/ - - DBG_FUNC( "wl_pci_remove" ); - DBG_ENTER( DbgInfo ); - - /* Make sure the pci_dev pointer passed in is valid */ - if( pdev == NULL ) { - DBG_ERROR( DbgInfo, "PCI subsys passed in an invalid pci_dev pointer\n" ); - return; - } - - dev = pci_get_drvdata( pdev ); - if( dev == NULL ) { - DBG_ERROR( DbgInfo, "Could not retrieve net_device structure\n" ); - return; - } - - /* Perform device cleanup */ - wl_remove( dev ); - free_irq( dev->irq, dev ); - -#ifdef ENABLE_DMA - wl_pci_dma_free( pdev, dev->priv ); -#endif - - wl_device_dealloc( dev ); - - DBG_LEAVE( DbgInfo ); - return; -} // wl_pci_remove -/*============================================================================*/ - -/******************************************************************************* - * wl_pci_setup() - ******************************************************************************* - * - * DESCRIPTION: - * - * Called by wl_pci_probe() to begin a device's initialization process. - * - * PARAMETERS: - * - * pdev - a pointer to the device's pci_dev structure - * - * RETURNS: - * - * 0 on success - * errno value otherwise - * - ******************************************************************************/ -int wl_pci_setup( struct pci_dev *pdev ) -{ - int result = 0; - struct net_device *dev = NULL; - struct wl_private *lp = NULL; - /*------------------------------------------------------------------------*/ - - DBG_FUNC( "wl_pci_setup" ); - DBG_ENTER( DbgInfo ); - - /* Make sure the pci_dev pointer passed in is valid */ - if( pdev == NULL ) { - DBG_ERROR( DbgInfo, "PCI subsys passed in an invalid pci_dev pointer\n" ); - return -ENODEV; - } - - result = pci_enable_device( pdev ); - if( result != 0 ) { - DBG_ERROR( DbgInfo, "pci_enable_device() failed\n" ); - DBG_LEAVE( DbgInfo ); - return result; - } - - /* We found our device! Let's register it with the system */ - DBG_TRACE( DbgInfo, "Found our device, now registering\n" ); - dev = wl_device_alloc( ); - if( dev == NULL ) { - DBG_ERROR( DbgInfo, "Could not register device!!!\n" ); - DBG_LEAVE( DbgInfo ); - return -ENOMEM; - } - - /* Make sure that space was allocated for our private adapter struct */ - if( dev->priv == NULL ) { - DBG_ERROR( DbgInfo, "Private adapter struct was not allocated!!!\n" ); - wl_device_dealloc(dev); - DBG_LEAVE( DbgInfo ); - return -ENOMEM; - } - -#ifdef ENABLE_DMA - /* Allocate DMA Descriptors */ - if( wl_pci_dma_alloc( pdev, dev->priv ) < 0 ) { - DBG_ERROR( DbgInfo, "Could not allocate DMA descriptor memory!!!\n" ); - wl_device_dealloc(dev); - 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" ); - wl_remove(dev); - wl_device_dealloc(dev); - 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 |