X-Git-Url: http://git.joshuawise.com/netwatch.git/blobdiff_plain/31ddf9b375ddf1bd142750bc4762b3268e297619..f8903fddbc2a42d68bfe42a0fb6cf93ed3a14277:/net/3c90x.c

diff --git a/net/3c90x.c b/net/3c90x.c
index 64f1d01..30283a2 100644
--- a/net/3c90x.c
+++ b/net/3c90x.c
@@ -45,13 +45,14 @@
 #include <pci-bother.h>
 #include <minilib.h>
 #include <output.h>
+#include <paging.h>
 
 #define	XCVR_MAGIC	(0x5A00)
 /** any single transmission fails after 16 collisions or other errors
  ** this is the number of times to retry the transmission -- this should
  ** be plenty
  **/
-#define	XMIT_RETRIES	1
+#define	XMIT_RETRIES	5
 
 /*** Register definitions for the 3c905 ***/
 enum Registers
@@ -223,10 +224,10 @@ typedef struct
     {
     unsigned int	DnNextPtr;
     unsigned int	FrameStartHeader;
-    unsigned int	HdrAddr;
-    unsigned int	HdrLength;
-    unsigned int	DataAddr;
-    unsigned int	DataLength;
+    struct {
+      unsigned int addr;
+      unsigned int len;
+    } __attribute ((aligned(8))) segments[64];
     }
     TXD __attribute__ ((aligned(8))); /* 64-bit aligned for bus mastering */
 
@@ -474,114 +475,92 @@ static void a3c90x_reset(void)
  *** pkt - the pointer to the packet data itself.
  ***/
 static void
-a3c90x_transmit(const char *dest_addr, unsigned int proto,
-                unsigned int size, const char *pkt)
+a3c90x_transmit(struct pbuf *p)
 {
-	struct eth_hdr
-	{
-		unsigned char dst_addr[ETH_ALEN];
-		unsigned char src_addr[ETH_ALEN];
-		unsigned short type;
-	} hdr;
-		
 	unsigned char status;
-	unsigned int i, retries;
-
-	for (retries=0; retries < XMIT_RETRIES; retries++)
+	static unsigned int stillwaiting = 0;
+	unsigned int n, len;
+	
+	if (stillwaiting)
 	{
-		if (retries != 0)
-			outputf("3c90x: retrying packet send (%d)", retries);
-		
-		/** Stall the download engine **/
-		outputf("3c90x: stalling transmit engine");
-		_issue_command(INF_3C90X.IOAddr, cmdStallCtl, 2 /* Stall download */);
-
-		hdr.type = htons(proto);
-		memcpy(hdr.dst_addr, dest_addr, ETH_ALEN);
-		memcpy(hdr.src_addr, INF_3C90X.HWAddr, ETH_ALEN);
-
-		/** Setup the DPD (download descriptor) **/
-		INF_3C90X.TransmitDPD.DnNextPtr = 0;
-		/** set notification for transmission completion (bit 15) **/
-		INF_3C90X.TransmitDPD.FrameStartHeader = (size + sizeof(hdr)) | 0x8000;
-		INF_3C90X.TransmitDPD.HdrAddr = virt_to_bus(&hdr);
-		INF_3C90X.TransmitDPD.HdrLength = sizeof(hdr);
-		INF_3C90X.TransmitDPD.DataAddr = virt_to_bus(pkt);
-		INF_3C90X.TransmitDPD.DataLength = size + (1<<31);
-
-		/** Send the packet **/
-		outputf("3c90x: pointing card at %08x", virt_to_bus(&(INF_3C90X.TransmitDPD)));
-		outl(INF_3C90X.IOAddr + regDnListPtr_l, virt_to_bus(&(INF_3C90X.TransmitDPD)));
-
-		outputf("3c90x: unstalling transmit engine");
-		_issue_command(INF_3C90X.IOAddr, cmdStallCtl, 3 /* Unstall download */);
-		
-		outputf("3c90x: waiting for download pointer");
-		oneshot_start_ms(100);
-		while((inl(INF_3C90X.IOAddr + regDnListPtr_l) != 0) && oneshot_running())
-			;
-		if (!oneshot_running())
-		{
-			outputf("3c90x: Download engine pointer timeout");
-		}
-
-		outputf("3c90x: waiting for TXCOMPLETE");
-		oneshot_start_ms(10);	/* Give it 10 ms */
 		while (!(inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_TXCOMPLETE) && oneshot_running())
 			;
-
 		if (!(inw(INF_3C90X.IOAddr + regCommandIntStatus_w) & INT_TXCOMPLETE))
 		{
-			outputf("3c90x: tx timeout? stat %02x", inb(INF_3C90X.IOAddr + regTxStatus_b));
-			_issue_command(INF_3C90X.IOAddr, cmdTxReset, 0);
-    if (! INF_3C90X.isBrev)
-	_outb(0x01, INF_3C90X.IOAddr + regTxFreeThresh_b);
-    _issue_command(INF_3C90X.IOAddr, cmdTxEnable, 0);
-    _issue_command(INF_3C90X.IOAddr, cmdSetInterruptEnable, 0);
-    _issue_command(INF_3C90X.IOAddr, cmdSetIndicationEnable, 0x0014);
-    _issue_command(INF_3C90X.IOAddr, cmdAcknowledgeInterrupt, 0x661);
-			continue;
+			outputf("3c90x: tx timeout? txstat %02x", inb(INF_3C90X.IOAddr + regTxStatus_b));
+			outputf("3c90x: Gen sts %04x", inw(INF_3C90X.IOAddr + regCommandIntStatus_w));
 		}
 		status = inb(INF_3C90X.IOAddr + regTxStatus_b);
 		outb(INF_3C90X.IOAddr + regTxStatus_b, 0x00);
-		
-		_issue_command(INF_3C90X.IOAddr, cmdAcknowledgeInterrupt, INT_TXCOMPLETE);
+		stillwaiting = 0;
+	}
 
-		/** successful completion (sans "interrupt Requested" bit) **/
-		if ((status & 0xbf) == 0x80)
-			return;
+	_issue_command(INF_3C90X.IOAddr, cmdStallCtl, 2 /* Stall download */);
 
-		outputf("3c90x: Status (%hhX)", status);
-		/** check error codes **/
-		if (status & 0x02)
-		{
-			outputf("3c90x: Tx Reclaim Error (%hhX)", status);
-			a3c90x_reset();
-		} else if (status & 0x04) {
-			outputf("3c90x: Tx Status Overflow (%hhX)", status);
-			for (i=0; i<32; i++)
-				_outb(0x00, INF_3C90X.IOAddr + regTxStatus_b);
-			/** must re-enable after max collisions before re-issuing tx **/
-			_issue_command(INF_3C90X.IOAddr, cmdTxEnable, 0);
-		} else if (status & 0x08) {
-			outputf("3c90x: Tx Max Collisions (%hhX)", status);
-			/** must re-enable after max collisions before re-issuing tx **/
-			_issue_command(INF_3C90X.IOAddr, cmdTxEnable, 0);
-		} else if (status & 0x10) {
-			outputf("3c90x: Tx Underrun (%hhX)", status);
-			a3c90x_reset();
-		} else if (status & 0x20) {
-			outputf("3c90x: Tx Jabber (%hhX)", status);
-			a3c90x_reset();
-		} else if ((status & 0x80) != 0x80) {
-			outputf("3c90x: Internal Error - Incomplete Transmission (%hhX)", status);
-			a3c90x_reset();
-		}
+	/** Setup the DPD (download descriptor) **/
+	INF_3C90X.TransmitDPD.DnNextPtr = 0;
+	len = 0;
+	n = 0;
+	for (; p; p = p->next)
+	{
+		INF_3C90X.TransmitDPD.segments[n].addr = v2p(p->payload);
+		INF_3C90X.TransmitDPD.segments[n].len = p->len | (p->next ? 0 : (1 << 31));
+		len += p->len;
+		n++;
 	}
+	/** set notification for transmission completion (bit 15) **/
+	INF_3C90X.TransmitDPD.FrameStartHeader = (len) | 0x8000;
+	
+	outputf("3c90x: Sending %d byte %d seg packet", len, n);
 
-	/** failed after RETRY attempts **/
-	outputf("3c90x: Failed to send after %d retries", retries);
-	return;
+	/** Send the packet **/
+	outl(INF_3C90X.IOAddr + regDnListPtr_l, v2p(&(INF_3C90X.TransmitDPD)));
+	_issue_command(INF_3C90X.IOAddr, cmdStallCtl, 3 /* Unstall download */);
+		
+	oneshot_start_ms(10);
+	while((inl(INF_3C90X.IOAddr + regDnListPtr_l) != 0) && oneshot_running())
+		;
+	if (!oneshot_running())
+	{
+		outputf("3c90x: Download engine pointer timeout");
+		return;
+	}
+
+	oneshot_start_ms(10);
+	stillwaiting = 1;
+		
+#if 0		
+	/** successful completion (sans "interrupt Requested" bit) **/
+	if ((status & 0xbf) == 0x80)
+		return;
+
+	outputf("3c90x: Status (%hhX)", status);
+	/** check error codes **/
+	if (status & 0x02)
+	{
+		outputf("3c90x: Tx Reclaim Error (%hhX)", status);
+		a3c90x_reset();
+	} else if (status & 0x04) {
+		outputf("3c90x: Tx Status Overflow (%hhX)", status);
+		for (i=0; i<32; i++)
+			_outb(0x00, INF_3C90X.IOAddr + regTxStatus_b);
+		/** must re-enable after max collisions before re-issuing tx **/
+		_issue_command(INF_3C90X.IOAddr, cmdTxEnable, 0);
+	} else if (status & 0x08) {
+		outputf("3c90x: Tx Max Collisions (%hhX)", status);
+		/** must re-enable after max collisions before re-issuing tx **/
+		_issue_command(INF_3C90X.IOAddr, cmdTxEnable, 0);
+	} else if (status & 0x10) {
+		outputf("3c90x: Tx Underrun (%hhX)", status);
+		a3c90x_reset();
+	} else if (status & 0x20) {
+		outputf("3c90x: Tx Jabber (%hhX)", status);
+		a3c90x_reset();
+	} else if ((status & 0x80) != 0x80) {
+		outputf("3c90x: Internal Error - Incomplete Transmission (%hhX)", status);
+		a3c90x_reset();
+	}
+#endif
 }
 
 
@@ -610,11 +589,11 @@ a3c90x_poll(struct nic *nic, int retrieve)
     /** Build the up-load descriptor **/
     INF_3C90X.ReceiveUPD.UpNextPtr = 0;
     INF_3C90X.ReceiveUPD.UpPktStatus = 0;
-    INF_3C90X.ReceiveUPD.DataAddr = virt_to_bus(nic->packet);
+    INF_3C90X.ReceiveUPD.DataAddr = v2p(nic->packet);
     INF_3C90X.ReceiveUPD.DataLength = 1536 + (1<<31);
 
     /** Submit the upload descriptor to the NIC **/
-    _outl(virt_to_bus(&(INF_3C90X.ReceiveUPD)),
+    _outl(v2p(&(INF_3C90X.ReceiveUPD)),
          INF_3C90X.IOAddr + regUpListPtr_l);
 
     /** Wait for upload completion (upComplete(15) or upError (14)) **/
@@ -700,7 +679,7 @@ static int a3c90x_probe(struct pci_dev * pci, void * data)
     	pci_read16(pci->bus, pci->dev, pci->fn, 0xE0) & ~0x3);
     
     outputf("3c90x: Picked I/O address %04x", ioaddr);
-//    pci_bother_add(pci);
+    pci_bother_add(pci);
     nic.ioaddr = ioaddr & ~3;
     nic.irqno = 0;
 
@@ -953,6 +932,7 @@ static int a3c90x_probe(struct pci_dev * pci, void * data)
     /* * Set our exported functions **/
     nic.poll     = a3c90x_poll;
     nic.transmit = a3c90x_transmit;
+    memcpy(nic.hwaddr, INF_3C90X.HWAddr, 6);
     eth_register(&nic);
 
     return 1;