- descriptors converted to synchronous DMA mapping.
--- linux-2.5.24/drivers/net/tlan.h Sun Jun 30 00:00:39 2002
+++ linux-2.5.24/drivers/net/tlan.h Sun Jun 30 14:34:27 2002
@@ -173,8 +173,8 @@ typedef struct tlan_private_tag {
struct pci_dev *pci_dev;
dma_addr_t rxBuffer_dma;
dma_addr_t txBuffer_dma;
+ dma_addr_t lists_dma;
struct net_device *nextDevice;
- void *dmaStorage;
u8 *padBuffer;
TLanList *rxList;
u8 *rxBuffer;
--- linux-2.5.24/drivers/net/tlan.c Sun Jun 30 00:00:42 2002
+++ linux-2.5.24/drivers/net/tlan.c Sun Jun 30 14:53:29 2002
@@ -639,8 +639,7 @@ static void TLan_Release_Dev(struct net_
TLanPrivateInfo *priv = dev->priv;
struct pci_dev *pdev = priv->pci_dev;
- if (priv->dmaStorage)
- kfree(priv->dmaStorage);
+ pci_free_consistent(pdev, TLAN_TOTAL_SIZE, priv->rxList, priv->lists_dma);
if ( bbuf )
TLan_ReleaseBuffers(pdev, priv);
release_region(dev->base_addr, 0x10);
@@ -814,16 +813,19 @@ static int TLan_Init( struct net_device
}
dma_size = TLAN_TOTAL_SIZE;
- priv->dmaStorage = kmalloc(dma_size, GFP_KERNEL | GFP_DMA);
- if ( priv->dmaStorage == NULL ) {
+ addr = pci_alloc_consistent(pdev, TLAN_TOTAL_SIZE, &priv->lists_dma);
+ if (!addr) {
printk(KERN_ERR "TLAN: Could not allocate lists and buffers for %s.\n",
dev->name );
release_region( dev->base_addr, 0x10 );
return -ENOMEM;
}
- memset( priv->dmaStorage, 0, dma_size );
- priv->rxList = (TLanList *)
- ( ( ( (u32) priv->dmaStorage ) + 7 ) & 0xFFFFFFF8 );
+ /*
+ * pci_alloc_consistent and an adequate power of 2 for TLAN_NUM_RX_LISTS
+ * guarantees that &xList is aligned on a 8 bytes boundary (required
+ * for rx and tx).
+ */
+ priv->rxList = (TLanList *)addr;
priv->txList = priv->rxList + TLAN_NUM_RX_LISTS;
if ( bbuf ) {
dma_size = TLAN_NUM_ALL_LISTS * TLAN_MAX_FRAME_SIZE;
@@ -831,6 +833,8 @@ static int TLan_Init( struct net_device
if ( addr == NULL ) {
printk(KERN_ERR "%s: buffers allocation failed\n",
dev->name );
+ pci_free_consistent(pdev, TLAN_TOTAL_SIZE, priv->rxList,
+ priv->lists_dma);
release_region( dev->base_addr, 0x10 );
return -ENOMEM;
}
@@ -1074,15 +1078,15 @@ static int TLan_StartTx( struct sk_buff
if ( ! priv->txInProgress ) {
priv->txInProgress = 1;
TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Starting TX on buffer %d\n", priv->txTail );
- outl( virt_to_bus( tail_list ), dev->base_addr + TLAN_CH_PARM );
+ outl( priv->lists_dma +
+ (TLAN_NUM_RX_LISTS + priv->txTail)*sizeof(TLanList),
+ dev->base_addr + TLAN_CH_PARM );
outl( TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD );
} else {
TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Adding buffer %d to TX channel\n", priv->txTail );
- if ( priv->txTail == 0 ) {
- ( priv->txList + ( TLAN_NUM_TX_LISTS - 1 ) )->forward = virt_to_bus( tail_list );
- } else {
- ( priv->txList + ( priv->txTail - 1 ) )->forward = virt_to_bus( tail_list );
- }
+ priv->txList[(priv->txTail-1)%TLAN_NUM_TX_LISTS].forward =
+ priv->lists_dma +
+ (TLAN_NUM_RX_LISTS + priv->txTail)*sizeof(TLanList);
}
spin_unlock_irqrestore(&priv->lock, flags);
@@ -1397,7 +1401,9 @@ u32 TLan_HandleTxEOF( struct net_device
TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT: Handling TX EOC (Head=%d Tail=%d)\n", priv->txHead, priv->txTail );
head_list = priv->txList + priv->txHead;
if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
- outl( virt_to_bus( head_list ), dev->base_addr + TLAN_CH_PARM );
+ outl( priv->lists_dma +
+ (TLAN_NUM_RX_LISTS + priv->txHead)*sizeof(TLanList),
+ dev->base_addr + TLAN_CH_PARM );
ack |= TLAN_HC_GO;
} else {
priv->txInProgress = 0;
@@ -1560,7 +1566,8 @@ u32 TLan_HandleRxEOF( struct net_device
head_list->forward = 0;
head_list->cStat = 0;
tail_list = priv->rxList + priv->rxTail;
- tail_list->forward = virt_to_bus( head_list );
+ tail_list->forward = priv->lists_dma +
+ priv->rxHead*sizeof(TLanList);
CIRC_INC( priv->rxHead, TLAN_NUM_RX_LISTS );
CIRC_INC( priv->rxTail, TLAN_NUM_RX_LISTS );
@@ -1576,7 +1583,8 @@ u32 TLan_HandleRxEOF( struct net_device
if ( eoc ) {
TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE: Handling RX EOC (Head=%d Tail=%d)\n", priv->rxHead, priv->rxTail );
head_list = priv->rxList + priv->rxHead;
- outl( virt_to_bus( head_list ), dev->base_addr + TLAN_CH_PARM );
+ outl( priv->lists_dma + priv->rxHead*sizeof(TLanList),
+ dev->base_addr + TLAN_CH_PARM );
ack |= TLAN_HC_GO | TLAN_HC_RT;
priv->rxEocCount++;
}
@@ -1663,7 +1671,9 @@ u32 TLan_HandleTxEOC( struct net_device
head_list = priv->txList + priv->txHead;
if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
netif_stop_queue(dev);
- outl( virt_to_bus( head_list ), dev->base_addr + TLAN_CH_PARM );
+ outl( priv->lists_dma + (TLAN_NUM_RX_LISTS +
+ priv->txHead)*sizeof(TLanList),
+ dev->base_addr + TLAN_CH_PARM );
ack |= TLAN_HC_GO;
} else {
priv->txInProgress = 0;
@@ -1782,7 +1792,8 @@ u32 TLan_HandleRxEOC( struct net_device
if ( priv->tlanRev < 0x30 ) {
TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE: Handling RX EOC (Head=%d Tail=%d) -- IRQ\n", priv->rxHead, priv->rxTail );
head_list = priv->rxList + priv->rxHead;
- outl( virt_to_bus( head_list ), dev->base_addr + TLAN_CH_PARM );
+ outl( priv->lists_dma + priv->rxHead*sizeof(TLanList),
+ dev->base_addr + TLAN_CH_PARM );
ack |= TLAN_HC_GO | TLAN_HC_RT;
priv->rxEocCount++;
}
@@ -1964,12 +1975,9 @@ void TLan_ResetLists( struct net_device
}
list->buffer[1].count = 0;
list->buffer[1].address = 0;
- if ( i < TLAN_NUM_RX_LISTS - 1 )
- list->forward = virt_to_bus( list + 1 );
- else
- list->forward = 0;
+ list->forward = priv->lists_dma + (i+1)*sizeof(TLanList);
}
-
+ list->forward = 0;
} /* TLan_ResetLists */
static void TLan_ResetTxBuffer(struct pci_dev *pdev, TLanList *list)
@@ -2347,7 +2355,7 @@ TLan_FinishReset( struct net_device *dev
if ( debug >= 1 && debug != TLAN_DEBUG_PROBE ) {
outb( ( TLAN_HC_REQ_INT >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 );
}
- outl( virt_to_bus( priv->rxList ), dev->base_addr + TLAN_CH_PARM );
+ outl( priv->lists_dma, dev->base_addr + TLAN_CH_PARM );
outl( TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD );
} else {
printk( "TLAN: %s: Link inactive, will retry in 10 secs...\n", dev->name );
-
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This archive was generated by hypermail 2b29 : Sun Jun 30 2002 - 22:00:15 EST