--- /dev/null
+/**************************************************************************
+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 <ipxe/ethernet.h>
+#include "etherboot.h"
+#include "nic.h"
+#include <ipxe/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:
+ */
Code Review / kvmfornfv.git / blobdiff