1 files changed, 416 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/gpxe/src/drivers/net/3c5x9.c b/contrib/syslinux-4.02/gpxe/src/drivers/net/3c5x9.c
new file mode 100644
index 0000000..87c9f29
--- /dev/null
+++ b/contrib/syslinux-4.02/gpxe/src/drivers/net/3c5x9.c
@@ -0,0 +1,416 @@
+/**************************************************************************
+ETHERBOOT -  BOOTP/TFTP Bootstrap Program
+
+Author: Martin Renters.
+  Date: Mar 22 1995
+
+ This code is based heavily on David Greenman's if_ed.c driver and
+  Andres Vega Garcia's if_ep.c driver.
+
+ Copyright (C) 1993-1994, David Greenman, Martin Renters.
+ Copyright (C) 1993-1995, Andres Vega Garcia.
+ Copyright (C) 1995, Serge Babkin.
+  This software may be used, modified, copied, distributed, and sold, in
+  both source and binary form provided that the above copyright and these
+  terms are retained. Under no circumstances are the authors responsible for
+  the proper functioning of this software, nor do the authors assume any
+  responsibility for damages incurred with its use.
+
+3c509 support added by Serge Babkin (babkin@hq.icb.chel.su)
+
+$Id$
+
+***************************************************************************/
+
+FILE_LICENCE ( BSD2 );
+
+/* #define EDEBUG */
+
+#include <gpxe/ethernet.h>
+#include "etherboot.h"
+#include "nic.h"
+#include <gpxe/isa.h>
+#include "3c509.h"
+
+static enum { none, bnc, utp } connector = none;	/* for 3C509 */
+
+/**************************************************************************
+ETH_RESET - Reset adapter
+***************************************************************************/
+void t5x9_disable ( struct nic *nic ) {
+	/* stop card */
+	outw(RX_DISABLE, nic->ioaddr + EP_COMMAND);
+	outw(RX_DISCARD_TOP_PACK, nic->ioaddr + EP_COMMAND);
+	while (inw(nic->ioaddr + EP_STATUS) & S_COMMAND_IN_PROGRESS)
+		;
+	outw(TX_DISABLE, nic->ioaddr + EP_COMMAND);
+	outw(STOP_TRANSCEIVER, nic->ioaddr + EP_COMMAND);
+	udelay(1000);
+	outw(RX_RESET, nic->ioaddr + EP_COMMAND);
+	outw(TX_RESET, nic->ioaddr + EP_COMMAND);
+	outw(C_INTR_LATCH, nic->ioaddr + EP_COMMAND);
+	outw(SET_RD_0_MASK, nic->ioaddr + EP_COMMAND);
+	outw(SET_INTR_MASK, nic->ioaddr + EP_COMMAND);
+	outw(SET_RX_FILTER, nic->ioaddr + EP_COMMAND);
+
+	/*
+	 * wait for reset to complete
+	 */
+	while (inw(nic->ioaddr + EP_STATUS) & S_COMMAND_IN_PROGRESS)
+		;
+
+	GO_WINDOW(nic->ioaddr,0);
+
+	/* Disable the card */
+	outw(0, nic->ioaddr + EP_W0_CONFIG_CTRL);
+
+	/* Configure IRQ to none */
+	outw(SET_IRQ(0), nic->ioaddr + EP_W0_RESOURCE_CFG);
+}
+
+static void t509_enable ( struct nic *nic ) {
+	int i;
+
+	/* Enable the card */
+	GO_WINDOW(nic->ioaddr,0);
+	outw(ENABLE_DRQ_IRQ, nic->ioaddr + EP_W0_CONFIG_CTRL);
+
+	GO_WINDOW(nic->ioaddr,2);
+
+	/* Reload the ether_addr. */
+	for (i = 0; i < ETH_ALEN; i++)
+		outb(nic->node_addr[i], nic->ioaddr + EP_W2_ADDR_0 + i);
+
+	outw(RX_RESET, nic->ioaddr + EP_COMMAND);
+	outw(TX_RESET, nic->ioaddr + EP_COMMAND);
+
+	/* Window 1 is operating window */
+	GO_WINDOW(nic->ioaddr,1);
+	for (i = 0; i < 31; i++)
+		inb(nic->ioaddr + EP_W1_TX_STATUS);
+
+	/* get rid of stray intr's */
+	outw(ACK_INTR | 0xff, nic->ioaddr + EP_COMMAND);
+
+	outw(SET_RD_0_MASK | S_5_INTS, nic->ioaddr + EP_COMMAND);
+
+	outw(SET_INTR_MASK, nic->ioaddr + EP_COMMAND);
+
+	outw(SET_RX_FILTER | FIL_GROUP | FIL_INDIVIDUAL | FIL_BRDCST,
+	     nic->ioaddr + EP_COMMAND);
+
+	/* configure BNC */
+	if (connector == bnc) {
+		outw(START_TRANSCEIVER, nic->ioaddr + EP_COMMAND);
+		udelay(1000);
+	}
+	/* configure UTP */
+	else if (connector == utp) {
+		GO_WINDOW(nic->ioaddr,4);
+		outw(ENABLE_UTP, nic->ioaddr + EP_W4_MEDIA_TYPE);
+		sleep(2);	/* Give time for media to negotiate */
+		GO_WINDOW(nic->ioaddr,1);
+	}
+
+	/* start transceiver and receiver */
+	outw(RX_ENABLE, nic->ioaddr + EP_COMMAND);
+	outw(TX_ENABLE, nic->ioaddr + EP_COMMAND);
+
+	/* set early threshold for minimal packet length */
+	outw(SET_RX_EARLY_THRESH | ETH_ZLEN, nic->ioaddr + EP_COMMAND);
+	outw(SET_TX_START_THRESH | 16, nic->ioaddr + EP_COMMAND);
+}
+
+static void t509_reset ( struct nic *nic ) {
+	t5x9_disable ( nic );
+	t509_enable ( nic );
+}    
+
+/**************************************************************************
+ETH_TRANSMIT - Transmit a frame
+***************************************************************************/
+static char padmap[] = {
+	0, 3, 2, 1};
+
+static void t509_transmit(
+struct nic *nic,
+const char *d,			/* Destination */
+unsigned int t,			/* Type */
+unsigned int s,			/* size */
+const char *p)			/* Packet */
+{
+	register unsigned int len;
+	int pad;
+	int status;
+
+#ifdef	EDEBUG
+	printf("{l=%d,t=%hX}",s+ETH_HLEN,t);
+#endif
+
+	/* swap bytes of type */
+	t= htons(t);
+
+	len=s+ETH_HLEN; /* actual length of packet */
+	pad = padmap[len & 3];
+
+	/*
+	* The 3c509 automatically pads short packets to minimum ethernet length,
+	* but we drop packets that are too large. Perhaps we should truncate
+	* them instead?
+	*/
+	if (len + pad > ETH_FRAME_LEN) {
+		return;
+	}
+
+	/* drop acknowledgements */
+	while ((status=inb(nic->ioaddr + EP_W1_TX_STATUS)) & TXS_COMPLETE ) {
+		if (status & (TXS_UNDERRUN|TXS_MAX_COLLISION|TXS_STATUS_OVERFLOW)) {
+			outw(TX_RESET, nic->ioaddr + EP_COMMAND);
+			outw(TX_ENABLE, nic->ioaddr + EP_COMMAND);
+		}
+		outb(0x0, nic->ioaddr + EP_W1_TX_STATUS);
+	}
+
+	while (inw(nic->ioaddr + EP_W1_FREE_TX) < (unsigned short)len + pad + 4)
+		; /* no room in FIFO */
+
+	outw(len, nic->ioaddr + EP_W1_TX_PIO_WR_1);
+	outw(0x0, nic->ioaddr + EP_W1_TX_PIO_WR_1);	/* Second dword meaningless */
+
+	/* write packet */
+	outsw(nic->ioaddr + EP_W1_TX_PIO_WR_1, d, ETH_ALEN/2);
+	outsw(nic->ioaddr + EP_W1_TX_PIO_WR_1, nic->node_addr, ETH_ALEN/2);
+	outw(t, nic->ioaddr + EP_W1_TX_PIO_WR_1);
+	outsw(nic->ioaddr + EP_W1_TX_PIO_WR_1, p, s / 2);
+	if (s & 1)
+		outb(*(p+s - 1), nic->ioaddr + EP_W1_TX_PIO_WR_1);
+
+	while (pad--)
+		outb(0, nic->ioaddr + EP_W1_TX_PIO_WR_1);	/* Padding */
+
+	/* wait for Tx complete */
+	while((inw(nic->ioaddr + EP_STATUS) & S_COMMAND_IN_PROGRESS) != 0)
+		;
+}
+
+/**************************************************************************
+ETH_POLL - Wait for a frame
+***************************************************************************/
+static int t509_poll(struct nic *nic, int retrieve)
+{
+	/* common variables */
+	/* variables for 3C509 */
+	short status, cst;
+	register short rx_fifo;
+
+	cst=inw(nic->ioaddr + EP_STATUS);
+
+#ifdef	EDEBUG
+	if(cst & 0x1FFF)
+		printf("-%hX-",cst);
+#endif
+
+	if( (cst & S_RX_COMPLETE)==0 ) {
+		/* acknowledge  everything */
+		outw(ACK_INTR| (cst & S_5_INTS), nic->ioaddr + EP_COMMAND);
+		outw(C_INTR_LATCH, nic->ioaddr + EP_COMMAND);
+
+		return 0;
+	}
+
+	status = inw(nic->ioaddr + EP_W1_RX_STATUS);
+#ifdef	EDEBUG
+	printf("*%hX*",status);
+#endif
+
+	if (status & ERR_RX) {
+		outw(RX_DISCARD_TOP_PACK, nic->ioaddr + EP_COMMAND);
+		return 0;
+	}
+
+	rx_fifo = status & RX_BYTES_MASK;
+	if (rx_fifo==0)
+		return 0;
+
+	if ( ! retrieve ) return 1;
+
+		/* read packet */
+#ifdef	EDEBUG
+	printf("[l=%d",rx_fifo);
+#endif
+	insw(nic->ioaddr + EP_W1_RX_PIO_RD_1, nic->packet, rx_fifo / 2);
+	if(rx_fifo & 1)
+		nic->packet[rx_fifo-1]=inb(nic->ioaddr + EP_W1_RX_PIO_RD_1);
+	nic->packetlen=rx_fifo;
+
+	while(1) {
+		status = inw(nic->ioaddr + EP_W1_RX_STATUS);
+#ifdef	EDEBUG
+		printf("*%hX*",status);
+#endif
+		rx_fifo = status & RX_BYTES_MASK;
+		if(rx_fifo>0) {
+			insw(nic->ioaddr + EP_W1_RX_PIO_RD_1, nic->packet+nic->packetlen, rx_fifo / 2);
+			if(rx_fifo & 1)
+				nic->packet[nic->packetlen+rx_fifo-1]=inb(nic->ioaddr + EP_W1_RX_PIO_RD_1);
+			nic->packetlen+=rx_fifo;
+#ifdef	EDEBUG
+			printf("+%d",rx_fifo);
+#endif
+		}
+		if(( status & RX_INCOMPLETE )==0) {
+#ifdef	EDEBUG
+			printf("=%d",nic->packetlen);
+#endif
+			break;
+		}
+		udelay(1000);	/* if incomplete wait 1 ms */
+	}
+	/* acknowledge reception of packet */
+	outw(RX_DISCARD_TOP_PACK, nic->ioaddr + EP_COMMAND);
+	while (inw(nic->ioaddr + EP_STATUS) & S_COMMAND_IN_PROGRESS)
+		;
+#ifdef	EDEBUG
+{
+	unsigned short type = 0;	/* used by EDEBUG */
+	type = (nic->packet[12]<<8) | nic->packet[13];
+	if(nic->packet[0]+nic->packet[1]+nic->packet[2]+nic->packet[3]+nic->packet[4]+
+	    nic->packet[5] == 0xFF*ETH_ALEN)
+		printf(",t=%hX,b]",type);
+	else
+		printf(",t=%hX]",type);
+}
+#endif
+	return (1);
+}
+
+/**************************************************************************
+ETH_IRQ - interrupt handling
+***************************************************************************/
+static void t509_irq(struct nic *nic __unused, irq_action_t action __unused)
+{
+  switch ( action ) {
+  case DISABLE :
+    break;
+  case ENABLE :
+    break;
+  case FORCE :
+    break;
+  }
+}
+
+/*************************************************************************
+	3Com 509 - specific routines
+**************************************************************************/
+
+static int eeprom_rdy ( uint16_t ioaddr ) {
+	int i;
+
+	for (i = 0; is_eeprom_busy(ioaddr) && i < MAX_EEPROMBUSY; i++);
+	if (i >= MAX_EEPROMBUSY) {
+		/* printf("3c509: eeprom failed to come ready.\n"); */
+		/* memory in EPROM is tight */
+		/* printf("3c509: eeprom busy.\n"); */
+		return (0);
+	}
+	return (1);
+}
+
+/*
+ * get_e: gets a 16 bits word from the EEPROM.
+ */
+static int get_e ( uint16_t ioaddr, int offset ) {
+	GO_WINDOW(ioaddr,0);
+	if (!eeprom_rdy(ioaddr))
+		return (0xffff);
+	outw(EEPROM_CMD_RD | offset, ioaddr + EP_W0_EEPROM_COMMAND);
+	if (!eeprom_rdy(ioaddr))
+		return (0xffff);
+	return (inw(ioaddr + EP_W0_EEPROM_DATA));
+}
+
+static struct nic_operations t509_operations = {
+	.connect	= dummy_connect,
+	.poll		= t509_poll,
+	.transmit	= t509_transmit,
+	.irq		= t509_irq,
+};
+
+/**************************************************************************
+ETH_PROBE - Look for an adapter
+***************************************************************************/
+int t5x9_probe ( struct nic *nic,
+		 uint16_t prod_id_check, uint16_t prod_id_mask ) {
+	uint16_t prod_id;
+	int i,j;
+	unsigned short *p;
+	
+	/* Check product ID */
+	prod_id = get_e ( nic->ioaddr, EEPROM_PROD_ID );
+	if ( ( prod_id & prod_id_mask ) != prod_id_check ) {
+		printf ( "EEPROM Product ID is incorrect (%hx & %hx != %hx)\n",
+			 prod_id, prod_id_mask, prod_id_check );
+		return 0;
+	}
+
+	/* test for presence of connectors */
+	GO_WINDOW(nic->ioaddr,0);
+	i = inw(nic->ioaddr + EP_W0_CONFIG_CTRL);
+	j = (inw(nic->ioaddr + EP_W0_ADDRESS_CFG) >> 14) & 0x3;
+
+	switch(j) {
+	case 0:
+		if (i & IS_UTP) {
+			printf("10baseT\n");
+			connector = utp;
+		} else {
+			printf("10baseT not present\n");
+			return 0;
+		}
+		break;
+	case 1:
+		if (i & IS_AUI) {
+			printf("10base5\n");
+		} else {
+			printf("10base5 not present\n");
+			return 0;
+		}
+		break;
+	case 3:
+		if (i & IS_BNC) {
+			printf("10base2\n");
+			connector = bnc;
+		} else {
+			printf("10base2 not present\n");
+			return 0;
+		}
+		break;
+	default:
+		printf("unknown connector\n");
+		return 0;
+	}
+
+	/*
+	* Read the station address from the eeprom
+	*/
+	p = (unsigned short *) nic->node_addr;
+	for (i = 0; i < ETH_ALEN / 2; i++) {
+		p[i] = htons(get_e(nic->ioaddr,i));
+		GO_WINDOW(nic->ioaddr,2);
+		outw(ntohs(p[i]), nic->ioaddr + EP_W2_ADDR_0 + (i * 2));
+	}
+
+	DBG ( "Ethernet Address: %s\n", eth_ntoa ( nic->node_addr ) );
+
+	t509_reset(nic);
+
+	nic->nic_op = &t509_operations;
+	return 1;
+
+}
+
+/*
+ * Local variables:
+ *  c-basic-offset: 8
+ * End:
+ */