patch-2.3.47 linux/drivers/net/sk98lin/skge.c

• Lines: 215
• Date: Fri Feb 18 15:07:20 2000
• Orig file: v2.3.46/linux/drivers/net/sk98lin/skge.c
• Orig date: Thu Feb 10 17:11:11 2000

diff -u --recursive --new-file v2.3.46/linux/drivers/net/sk98lin/skge.c linux/drivers/net/sk98lin/skge.c
@@ -276,7 +276,9 @@
 // #define RLMT_MODE	{"CheckLink", }
 
 
-#define DEV_KFREE_SKB(skb) dev_kfree_skb(skb);
+#define DEV_KFREE_SKB(skb) dev_kfree_skb(skb)
+#define DEV_KFREE_SKB_IRQ(skb) dev_kfree_skb_irq(skb)
+#define DEV_KFREE_SKB_ANY(skb) dev_kfree_skb_any(skb)
 
 /* function prototypes ******************************************************/
 static void	FreeResources(struct net_device *dev);
@@ -410,6 +412,21 @@
 
 		pci_set_master(pdev);
 
+#ifdef __sparc__
+		/* Set the proper cache line size value, plus enable
+		 * write-invalidate and fast back-to-back on Sparc.
+		 */
+		{
+			SK_U16 pci_command;
+
+			SkPciWriteCfgByte(pAC, PCI_CACHE_LINE_SIZE, 0x10);
+
+			SkPciReadCfgWord(pAC, PCI_COMMAND, &pci_command);
+			pci_command |= (PCI_COMMAND_INVALIDATE | PCI_COMMAND_FAST_BACK);
+			SkPciWriteCfgWord(pAC, PCI_COMMAND, pci_command);
+		}
+#endif
+
 		base_address = pdev->resource[0].start;
 
 #ifdef SK_BIG_ENDIAN
@@ -1507,13 +1524,16 @@
 
 	Rc = XmitFrame(pAC, &pAC->TxPort[pAC->ActivePort][TX_PRIO_LOW], skb);
 
-	if (Rc == 0) {
-		/* transmitter out of resources */
+	/* Transmitter out of resources? */
+	if (Rc <= 0)
 		netif_stop_queue(dev);
 
-		/* give buffer ownership back to the queueing layer */
+	/* If not taken, give buffer ownership back to the
+	 * queueing layer.
+	 */
+	if (Rc < 0)
 		return (1);
-	} 
+
 	dev->trans_start = jiffies;
 	return (0);
 } /* SkGeXmit */
@@ -1539,7 +1559,7 @@
  *	> 0 - on succes: the number of bytes in the message
  *	= 0 - on resource shortage: this frame sent or dropped, now
  *        the ring is full ( -> set tbusy)
- *	< 0 - on failure: other problems (not used)
+ *	< 0 - on failure: other problems ( -> return failure to upper layers)
  */
 static int XmitFrame(
 SK_AC 		*pAC,		/* pointer to adapter context */
@@ -1566,7 +1586,7 @@
 				SK_DBGCAT_DRV_TX_PROGRESS,
 				("XmitFrame failed\n"));
 			/* this message can not be sent now */
-			return (0);
+			return (-1);
 		}
 	}
 	/* advance head counter behind descriptor needed for this frame */
@@ -1586,7 +1606,8 @@
 	/* set up descriptor and CONTROL dword */
 	PhysAddr = (SK_U64) pci_map_single(&pAC->PciDev,
 					   pMessage->data,
-					   pMessage->len);
+					   pMessage->len,
+					   PCI_DMA_TODEVICE);
 	pTxd->VDataLow = (SK_U32)  (PhysAddr & 0xffffffff);
 	pTxd->VDataHigh = (SK_U32) (PhysAddr >> 32);
 	pTxd->pMBuf = pMessage;
@@ -1679,9 +1700,11 @@
 		PhysAddr = ((SK_U64) pTxd->VDataHigh) << (SK_U64) 32;
 		PhysAddr |= (SK_U64) pTxd->VDataLow;
 		pci_unmap_single(&pAC->PciDev, PhysAddr,
-				 pTxd->pMBuf->len);
+				 pTxd->pMBuf->len,
+				 PCI_DMA_TODEVICE);
 
-		DEV_KFREE_SKB(pTxd->pMBuf); /* free message */
+		/* free message */
+		DEV_KFREE_SKB_ANY(pTxd->pMBuf);
 		pTxPort->TxdRingFree++;
 		pTxd->TBControl &= ~TX_CTRL_SOFTWARE;
 		pTxd = pTxd->pNextTxd; /* point behind fragment with EOF */
@@ -1759,7 +1782,8 @@
 	Length = pAC->RxBufSize;
 	PhysAddr = (SK_U64) pci_map_single(&pAC->PciDev,
 					   pMsgBlock->data,
-					   pAC->RxBufSize - 2);
+					   pAC->RxBufSize - 2,
+					   PCI_DMA_FROMDEVICE);
 	pRxd->VDataLow = (SK_U32) (PhysAddr & 0xffffffff);
 	pRxd->VDataHigh = (SK_U32) (PhysAddr >> 32);
 	pRxd->pMBuf = pMsgBlock;
@@ -1882,7 +1906,8 @@
 				skb_put(pNewMsg, FrameLength);
 				pci_dma_sync_single(&pAC->PciDev,
 						    (dma_addr_t) PhysAddr,
-						    FrameLength);
+						    FrameLength,
+						    PCI_DMA_FROMDEVICE);
 				eth_copy_and_sum(pNewMsg, pMsg->data,
 					FrameLength, 0);
 				ReQueueRxBuffer(pAC, pRxPort, pMsg,
@@ -1902,15 +1927,16 @@
 			/* release the DMA mapping */
 			pci_unmap_single(&pAC->PciDev,
 					 PhysAddr,
-					 pAC->RxBufSize - 2);
+					 pAC->RxBufSize - 2,
+					 PCI_DMA_FROMDEVICE);
 
 			/* set length in message */
 			skb_put(pMsg, FrameLength);
 			/* hardware checksum */
 			Type = ntohs(*((short*)&pMsg->data[12]));
 			if (Type == 0x800) {
-				Csum1= pRxd->TcpSums & 0xffff;
-				Csum2=(pRxd->TcpSums >> 16) & 0xffff;
+				Csum1=le16_to_cpu(pRxd->TcpSums & 0xffff);
+				Csum2=le16_to_cpu((pRxd->TcpSums >> 16) & 0xffff);
 				if ((Csum1 & 0xfffe) && (Csum2 & 0xfffe)) {
 					Result = SkCsGetReceiveInfo(pAC,
 						&pMsg->data[14], 
@@ -1980,7 +2006,7 @@
 					SK_DBG_MSG(NULL, SK_DBGMOD_DRV, 
 						SK_DBGCAT_DRV_RX_PROGRESS,
 						("D"));
-					DEV_KFREE_SKB(pMsg);
+					DEV_KFREE_SKB_IRQ(pMsg);
 				}
 			} /* if not for rlmt */
 			else {
@@ -2016,7 +2042,7 @@
 					pAC->dev->last_rx = jiffies;
 				}
 				else {
-					DEV_KFREE_SKB(pMsg);
+					DEV_KFREE_SKB_IRQ(pMsg);
 				}
 
 			} /* if packet for rlmt */
@@ -2040,7 +2066,7 @@
 				("skge: Error in received frame, dropped!\n"
 				"Control: %x\nRxStat: %x\n",
 				Control, FrameStat));
-			DEV_KFREE_SKB(pMsg);
+			DEV_KFREE_SKB_IRQ(pMsg);
 		}
 	} /* while */
 	FillRxRing(pAC, pRxPort);
@@ -2060,8 +2086,9 @@
 	PhysAddr |= (SK_U64) pRxd->VDataLow;
 	pci_unmap_single(&pAC->PciDev,
 			 PhysAddr,
-			 pAC->RxBufSize - 2);
-	DEV_KFREE_SKB(pRxd->pMBuf);
+			 pAC->RxBufSize - 2,
+			 PCI_DMA_FROMDEVICE);
+	DEV_KFREE_SKB_IRQ(pRxd->pMBuf);
 	pRxd->pMBuf = NULL;
 	pRxPort->RxdRingFree++;
 	pRxPort->pRxdRingHead = pRxd->pNextRxd;
@@ -2139,7 +2166,8 @@
 			PhysAddr |= (SK_U64) pRxd->VDataLow;
 			pci_unmap_single(&pAC->PciDev,
 					 PhysAddr,
-					 pAC->RxBufSize - 2);
+					 pAC->RxBufSize - 2,
+					 PCI_DMA_FROMDEVICE);
 			DEV_KFREE_SKB(pRxd->pMBuf);
 			pRxd->pMBuf = NULL;
 		}
@@ -2276,7 +2304,7 @@
 	
 	SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
 		("SkGeSetMacAddr starts now...\n"));
-	if(test_bit(LINK_STATE_START, &dev->state)) {
+	if(netif_running(dev)) {
 		return -EBUSY;
 	}
 	memcpy(dev->dev_addr, addr->sa_data,dev->addr_len);
@@ -3120,7 +3148,7 @@
 	pFreeMbuf = pMbuf;
 	do {
 		pNextMbuf = pFreeMbuf->pNext;
-		DEV_KFREE_SKB(pFreeMbuf->pOs);
+		DEV_KFREE_SKB_ANY(pFreeMbuf->pOs);
 		pFreeMbuf = pNextMbuf;
 	} while ( pFreeMbuf != NULL );
 } /* SkDrvFreeRlmtMbuf */
@@ -3489,8 +3517,9 @@
 		pRlmtMbuf = (SK_MBUF*) Param.pParaPtr;
 		pMsg = (struct sk_buff*) pRlmtMbuf->pOs;
 		skb_put(pMsg, pRlmtMbuf->Length);
-		XmitFrame(pAC, &pAC->TxPort[pRlmtMbuf->PortIdx][TX_PRIO_LOW],
-			pMsg);
+		if (XmitFrame(pAC, &pAC->TxPort[pRlmtMbuf->PortIdx][TX_PRIO_LOW],
+			      pMsg) < 0)
+			DEV_KFREE_SKB_ANY(pMsg);
 		break;
 	default:
 		break;