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tlan: Remove broken support for big buffers 

The big rx/tx buffer support is broken and unlikely to be very useful
as such. Remove it.

Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sakari Ailus 2008-12-16 15:24:05 -08:00 committed by David S. Miller
parent 354ade9058
commit 5eeabf5150
1 changed files with 77 additions and 134 deletions
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211
drivers/net/tlan.c
View File

@ -163,6 +163,11 @@
* v1.15 Apr 4, 2002 - Correct operation when aui=1 to be * v1.15 Apr 4, 2002 - Correct operation when aui=1 to be
* 10T half duplex no loopback * 10T half duplex no loopback
* Thanks to Gunnar Eikman * Thanks to Gunnar Eikman
*
* Sakari Ailus <sakari.ailus@iki.fi>:
*
* v1.15a Dec 15 2008 - Remove bbuf support, it doesn't work anyway.
*
*******************************************************************************/ *******************************************************************************/
#include <linux/module.h> #include <linux/module.h>
@ -213,12 +218,8 @@ static int debug;
module_param(debug, int, 0); module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "ThunderLAN debug mask"); MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
static int bbuf;
module_param(bbuf, int, 0);
MODULE_PARM_DESC(bbuf, "ThunderLAN use big buffer (0-1)");
static const char TLanSignature[] = "TLAN"; static const char TLanSignature[] = "TLAN";
static const char tlan_banner[] = "ThunderLAN driver v1.15\n"; static const char tlan_banner[] = "ThunderLAN driver v1.15a\n";
static int tlan_have_pci; static int tlan_have_pci;
static int tlan_have_eisa; static int tlan_have_eisa;
@ -859,13 +860,8 @@ static int TLan_Init( struct net_device *dev )
priv = netdev_priv(dev); priv = netdev_priv(dev);
if ( bbuf ) { dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS )
dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS ) * ( sizeof(TLanList) );
* ( sizeof(TLanList) + TLAN_MAX_FRAME_SIZE );
} else {
dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS )
* ( sizeof(TLanList) );
}
priv->dmaStorage = pci_alloc_consistent(priv->pciDev, priv->dmaStorage = pci_alloc_consistent(priv->pciDev,
dma_size, &priv->dmaStorageDMA); dma_size, &priv->dmaStorageDMA);
priv->dmaSize = dma_size; priv->dmaSize = dma_size;
@ -881,16 +877,6 @@ static int TLan_Init( struct net_device *dev )
priv->txList = priv->rxList + TLAN_NUM_RX_LISTS; priv->txList = priv->rxList + TLAN_NUM_RX_LISTS;
priv->txListDMA = priv->rxListDMA + sizeof(TLanList) * TLAN_NUM_RX_LISTS; priv->txListDMA = priv->rxListDMA + sizeof(TLanList) * TLAN_NUM_RX_LISTS;
if ( bbuf ) {
priv->rxBuffer = (u8 *) ( priv->txList + TLAN_NUM_TX_LISTS );
priv->rxBufferDMA =priv->txListDMA
+ sizeof(TLanList) * TLAN_NUM_TX_LISTS;
priv->txBuffer = priv->rxBuffer
+ ( TLAN_NUM_RX_LISTS * TLAN_MAX_FRAME_SIZE );
priv->txBufferDMA = priv->rxBufferDMA
+ ( TLAN_NUM_RX_LISTS * TLAN_MAX_FRAME_SIZE );
}
err = 0; err = 0;
for ( i = 0; i < 6 ; i++ ) for ( i = 0; i < 6 ; i++ )
err |= TLan_EeReadByte( dev, err |= TLan_EeReadByte( dev,
@ -1094,9 +1080,8 @@ static void TLan_tx_timeout_work(struct work_struct *work)
static int TLan_StartTx( struct sk_buff *skb, struct net_device *dev ) static int TLan_StartTx( struct sk_buff *skb, struct net_device *dev )
{ {
TLanPrivateInfo *priv = netdev_priv(dev); TLanPrivateInfo *priv = netdev_priv(dev);
TLanList *tail_list;
dma_addr_t tail_list_phys; dma_addr_t tail_list_phys;
u8 *tail_buffer; TLanList *tail_list;
unsigned long flags; unsigned long flags;
unsigned int txlen; unsigned int txlen;
@ -1125,15 +1110,10 @@ static int TLan_StartTx( struct sk_buff *skb, struct net_device *dev )
tail_list->forward = 0; tail_list->forward = 0;
if ( bbuf ) { tail_list->buffer[0].address = pci_map_single(priv->pciDev,
tail_buffer = priv->txBuffer + ( priv->txTail * TLAN_MAX_FRAME_SIZE ); skb->data, txlen,
skb_copy_from_linear_data(skb, tail_buffer, txlen); PCI_DMA_TODEVICE);
} else { TLan_StoreSKB(tail_list, skb);
tail_list->buffer[0].address = pci_map_single(priv->pciDev,
skb->data, txlen,
PCI_DMA_TODEVICE);
TLan_StoreSKB(tail_list, skb);
}
tail_list->frameSize = (u16) txlen; tail_list->frameSize = (u16) txlen;
tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen; tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
@ -1163,9 +1143,6 @@ static int TLan_StartTx( struct sk_buff *skb, struct net_device *dev )
CIRC_INC( priv->txTail, TLAN_NUM_TX_LISTS ); CIRC_INC( priv->txTail, TLAN_NUM_TX_LISTS );
if ( bbuf )
dev_kfree_skb_any(skb);
dev->trans_start = jiffies; dev->trans_start = jiffies;
return 0; return 0;
@ -1429,17 +1406,16 @@ static u32 TLan_HandleTxEOF( struct net_device *dev, u16 host_int )
head_list = priv->txList + priv->txHead; head_list = priv->txList + priv->txHead;
while (((tmpCStat = head_list->cStat ) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) { while (((tmpCStat = head_list->cStat ) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) {
struct sk_buff *skb = TLan_GetSKB(head_list);
ack++; ack++;
if ( ! bbuf ) { pci_unmap_single(priv->pciDev, head_list->buffer[0].address,
struct sk_buff *skb = TLan_GetSKB(head_list); max(skb->len,
pci_unmap_single(priv->pciDev, head_list->buffer[0].address, (unsigned int)TLAN_MIN_FRAME_SIZE),
max(skb->len, PCI_DMA_TODEVICE);
(unsigned int)TLAN_MIN_FRAME_SIZE), dev_kfree_skb_any(skb);
PCI_DMA_TODEVICE); head_list->buffer[8].address = 0;
dev_kfree_skb_any(skb); head_list->buffer[9].address = 0;
head_list->buffer[8].address = 0;
head_list->buffer[9].address = 0;
}
if ( tmpCStat & TLAN_CSTAT_EOC ) if ( tmpCStat & TLAN_CSTAT_EOC )
eoc = 1; eoc = 1;
@ -1549,7 +1525,6 @@ static u32 TLan_HandleRxEOF( struct net_device *dev, u16 host_int )
TLanPrivateInfo *priv = netdev_priv(dev); TLanPrivateInfo *priv = netdev_priv(dev);
u32 ack = 0; u32 ack = 0;
int eoc = 0; int eoc = 0;
u8 *head_buffer;
TLanList *head_list; TLanList *head_list;
struct sk_buff *skb; struct sk_buff *skb;
TLanList *tail_list; TLanList *tail_list;
@ -1564,53 +1539,33 @@ static u32 TLan_HandleRxEOF( struct net_device *dev, u16 host_int )
while (((tmpCStat = head_list->cStat) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) { while (((tmpCStat = head_list->cStat) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) {
dma_addr_t frameDma = head_list->buffer[0].address; dma_addr_t frameDma = head_list->buffer[0].address;
u32 frameSize = head_list->frameSize; u32 frameSize = head_list->frameSize;
struct sk_buff *new_skb;
ack++; ack++;
if (tmpCStat & TLAN_CSTAT_EOC) if (tmpCStat & TLAN_CSTAT_EOC)
eoc = 1; eoc = 1;
if (bbuf) { new_skb = netdev_alloc_skb(dev, TLAN_MAX_FRAME_SIZE + 7 );
skb = netdev_alloc_skb(dev, frameSize + 7); if ( !new_skb )
if ( !skb ) goto drop_and_reuse;
goto drop_and_reuse;
head_buffer = priv->rxBuffer skb = TLan_GetSKB(head_list);
+ (priv->rxHead * TLAN_MAX_FRAME_SIZE); pci_unmap_single(priv->pciDev, frameDma,
skb_reserve(skb, 2); TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
pci_dma_sync_single_for_cpu(priv->pciDev, skb_put( skb, frameSize );
frameDma, frameSize,
PCI_DMA_FROMDEVICE);
skb_copy_from_linear_data(skb, head_buffer, frameSize);
skb_put(skb, frameSize);
dev->stats.rx_bytes += frameSize;
skb->protocol = eth_type_trans( skb, dev ); dev->stats.rx_bytes += frameSize;
netif_rx( skb );
} else {
struct sk_buff *new_skb;
new_skb = netdev_alloc_skb(dev, TLAN_MAX_FRAME_SIZE + 7 ); skb->protocol = eth_type_trans( skb, dev );
if ( !new_skb ) netif_rx( skb );
goto drop_and_reuse;
skb = TLan_GetSKB(head_list); skb_reserve( new_skb, NET_IP_ALIGN );
pci_unmap_single(priv->pciDev, frameDma, head_list->buffer[0].address = pci_map_single(priv->pciDev,
TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE); new_skb->data,
skb_put( skb, frameSize ); TLAN_MAX_FRAME_SIZE,
PCI_DMA_FROMDEVICE);
dev->stats.rx_bytes += frameSize; TLan_StoreSKB(head_list, new_skb);
skb->protocol = eth_type_trans( skb, dev );
netif_rx( skb );
skb_reserve( new_skb, NET_IP_ALIGN );
head_list->buffer[0].address = pci_map_single(priv->pciDev,
new_skb->data,
TLAN_MAX_FRAME_SIZE,
PCI_DMA_FROMDEVICE);
TLan_StoreSKB(head_list, new_skb);
}
drop_and_reuse: drop_and_reuse:
head_list->forward = 0; head_list->forward = 0;
head_list->cStat = 0; head_list->cStat = 0;
@ -1993,12 +1948,7 @@ static void TLan_ResetLists( struct net_device *dev )
for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) { for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) {
list = priv->txList + i; list = priv->txList + i;
list->cStat = TLAN_CSTAT_UNUSED; list->cStat = TLAN_CSTAT_UNUSED;
if ( bbuf ) { list->buffer[0].address = 0;
list->buffer[0].address = priv->txBufferDMA
+ ( i * TLAN_MAX_FRAME_SIZE );
} else {
list->buffer[0].address = 0;
}
list->buffer[2].count = 0; list->buffer[2].count = 0;
list->buffer[2].address = 0; list->buffer[2].address = 0;
list->buffer[8].address = 0; list->buffer[8].address = 0;
@ -2013,23 +1963,18 @@ static void TLan_ResetLists( struct net_device *dev )
list->cStat = TLAN_CSTAT_READY; list->cStat = TLAN_CSTAT_READY;
list->frameSize = TLAN_MAX_FRAME_SIZE; list->frameSize = TLAN_MAX_FRAME_SIZE;
list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER; list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
if ( bbuf ) { skb = netdev_alloc_skb(dev, TLAN_MAX_FRAME_SIZE + 7 );
list->buffer[0].address = priv->rxBufferDMA if ( !skb ) {
+ ( i * TLAN_MAX_FRAME_SIZE ); pr_err("TLAN: out of memory for received data.\n" );
} else { break;
skb = netdev_alloc_skb(dev, TLAN_MAX_FRAME_SIZE + 7 );
if ( !skb ) {
pr_err("TLAN: out of memory for received data.\n" );
break;
}
skb_reserve( skb, NET_IP_ALIGN );
list->buffer[0].address = pci_map_single(priv->pciDev,
skb->data,
TLAN_MAX_FRAME_SIZE,
PCI_DMA_FROMDEVICE);
TLan_StoreSKB(list, skb);
} }
skb_reserve( skb, NET_IP_ALIGN );
list->buffer[0].address = pci_map_single(priv->pciDev,
skb->data,
TLAN_MAX_FRAME_SIZE,
PCI_DMA_FROMDEVICE);
TLan_StoreSKB(list, skb);
list->buffer[1].count = 0; list->buffer[1].count = 0;
list->buffer[1].address = 0; list->buffer[1].address = 0;
list->forward = list_phys + sizeof(TLanList); list->forward = list_phys + sizeof(TLanList);
@ -2052,35 +1997,33 @@ static void TLan_FreeLists( struct net_device *dev )
TLanList *list; TLanList *list;
struct sk_buff *skb; struct sk_buff *skb;
if ( ! bbuf ) { for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) {
for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) { list = priv->txList + i;
list = priv->txList + i; skb = TLan_GetSKB(list);
skb = TLan_GetSKB(list); if ( skb ) {
if ( skb ) { pci_unmap_single(
pci_unmap_single( priv->pciDev,
priv->pciDev, list->buffer[0].address,
list->buffer[0].address, max(skb->len,
max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
(unsigned int)TLAN_MIN_FRAME_SIZE), PCI_DMA_TODEVICE);
PCI_DMA_TODEVICE); dev_kfree_skb_any( skb );
dev_kfree_skb_any( skb ); list->buffer[8].address = 0;
list->buffer[8].address = 0; list->buffer[9].address = 0;
list->buffer[9].address = 0;
}
} }
}
for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) { for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) {
list = priv->rxList + i; list = priv->rxList + i;
skb = TLan_GetSKB(list); skb = TLan_GetSKB(list);
if ( skb ) { if ( skb ) {
pci_unmap_single(priv->pciDev, pci_unmap_single(priv->pciDev,
list->buffer[0].address, list->buffer[0].address,
TLAN_MAX_FRAME_SIZE, TLAN_MAX_FRAME_SIZE,
PCI_DMA_FROMDEVICE); PCI_DMA_FROMDEVICE);
dev_kfree_skb_any( skb ); dev_kfree_skb_any( skb );
list->buffer[8].address = 0; list->buffer[8].address = 0;
list->buffer[9].address = 0; list->buffer[9].address = 0;
}
} }
} }
} /* TLan_FreeLists */ } /* TLan_FreeLists */