summaryrefslogtreecommitdiff
path: root/i386/i386at/gpl/if_ns.c
diff options
context:
space:
mode:
Diffstat (limited to 'i386/i386at/gpl/if_ns.c')
-rw-r--r--i386/i386at/gpl/if_ns.c642
1 files changed, 0 insertions, 642 deletions
diff --git a/i386/i386at/gpl/if_ns.c b/i386/i386at/gpl/if_ns.c
deleted file mode 100644
index da629cb..0000000
--- a/i386/i386at/gpl/if_ns.c
+++ /dev/null
@@ -1,642 +0,0 @@
-/*
- * Copyright (c) 1994 Shantanu Goel
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * THE AUTHOR ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. THE AUTHOR DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- */
-
-/*
- * Written 1992,1993 by Donald Becker.
- *
- * Copyright 1993 United States Government as represented by the
- * Director, National Security Agency. This software may be used and
- * distributed according to the terms of the GNU Public License,
- * incorporated herein by reference.
- *
- * The Author may be reached as becker@super.org or
- * C/O Supercomputing Research Ctr., 17100 Science Dr., Bowie MD 20715
- */
-
-#include <ul.h>
-#include <wd.h>
-#include <hpp.h>
-#if NUL > 0 || NWD > 0 || NHPP > 0
-/*
- * Generic NS8390 routines.
- * Derived from the Linux driver by Donald Becker.
- *
- * Shantanu Goel (goel@cs.columbia.edu)
- */
-#include <sys/types.h>
-#include <device/device_types.h>
-#include <device/errno.h>
-#include <device/io_req.h>
-#include <device/if_hdr.h>
-#include <device/if_ether.h>
-#include <device/net_status.h>
-#include <device/net_io.h>
-#include <chips/busses.h>
-#include <i386/machspl.h>
-#include <i386/pio.h>
-#include <i386at/gpl/if_nsreg.h>
-
-#define IO_DELAY __asm__ __volatile__ ("outb %al,$0x80")
-#define outb_p(p, v) { outb(p, v); IO_DELAY; }
-#define inb_p(p) ({ unsigned char _v; _v = inb(p); IO_DELAY; _v; })
-
-#define NSDEBUG
-#ifdef NSDEBUG
-int nsdebug = 0;
-#define DEBUGF(stmt) { if (nsdebug) stmt; }
-#else
-#define DEBUGF(stmt)
-#endif
-
-void nsxint(struct nssoftc *);
-void nsrint(struct nssoftc *);
-void nsxmit(struct nssoftc *, unsigned, int);
-void nsrxoverrun(struct nssoftc *);
-
-/*
- * Initialize the NIC.
- * Must be called at splimp().
- */
-void
-nsinit(sc)
- struct nssoftc *sc;
-{
- int port = sc->sc_port, i, rxconfig;
- int endcfg = sc->sc_word16 ? (0x48 | ENDCFG_WTS) : 0x48;
- struct ifnet *ifp = &sc->sc_if;
-
- /*
- * Reset the board.
- */
- (*sc->sc_reset)(sc);
-
- sc->sc_oactive = 0;
- sc->sc_txing = 0;
- sc->sc_timer = 0;
- sc->sc_tx1 = sc->sc_tx2 = 0;
- sc->sc_curpg = sc->sc_rxstrtpg;
-
- /*
- * Follow National Semiconductor's recommendations for
- * initializing the DP83902.
- */
- outb_p(port, E8390_NODMA+E8390_PAGE0+E8390_STOP); /* 0x21 */
- outb_p(port + EN0_DCFG, endcfg); /* 0x48 or 0x49 */
-
- /*
- * Clear remote byte count registers.
- */
- outb_p(port + EN0_RCNTLO, 0);
- outb_p(port + EN0_RCNTHI, 0);
-
- /*
- * Set to monitor and loopback mode -- this is vital!
- */
- outb_p(port + EN0_RXCR, E8390_RXOFF); /* 0x20 */
- outb_p(port + EN0_TXCR, E8390_TXOFF); /* 0x02 */
-
- /*
- * Set transmit page and receive ring.
- */
- outb_p(port + EN0_TPSR, sc->sc_txstrtpg);
- outb_p(port + EN0_STARTPG, sc->sc_rxstrtpg);
- outb_p(port + EN0_BOUNDARY, sc->sc_stoppg - 1);
- outb_p(port + EN0_STOPPG, sc->sc_stoppg);
-
- /*
- * Clear pending interrupts and mask.
- */
- outb_p(port + EN0_ISR, 0xff);
-
- /*
- * Enable the following interrupts: receive/transmit complete,
- * receive/transmit error, and Receiver OverWrite.
- *
- * Counter overflow and Remote DMA complete are *not* enabled.
- */
- outb_p(port + EN0_IMR, ENISR_RX | ENISR_TX | ENISR_RX_ERR |
- ENISR_TX_ERR | ENISR_OVER );
-
- /*
- * Copy station address into 8390 registers.
- */
- outb_p(port, E8390_NODMA + E8390_PAGE1 + E8390_STOP); /* 0x61 */
- for (i = 0; i < ETHER_ADDR_LEN; i++)
- outb_p(port + EN1_PHYS + i, sc->sc_addr[i]);
-
- /*
- * Set up to accept all multicast packets.
- */
- for (i = 0; i < 8; i++)
- outb_p(port + EN1_MULT + i, 0xff);
-
- /*
- * Initialize CURRent pointer
- */
- outb_p(port + EN1_CURPAG, sc->sc_rxstrtpg);
-
- /*
- * Program command register for page 0.
- */
- outb_p(port, E8390_NODMA + E8390_PAGE0 + E8390_STOP);
-
-#if 0
- outb_p(port + EN0_ISR, 0xff);
- outb_p(port + EN0_IMR, ENISR_ALL);
-#endif
-
- outb_p(port + E8390_CMD, E8390_NODMA + E8390_PAGE0 + E8390_START);
- outb_p(port + EN0_TXCR, E8390_TXCONFIG); /* xmit on */
-
- /* 3c503 TechMan says rxconfig only after the NIC is started. */
- rxconfig = E8390_RXCONFIG;
- if (ifp->if_flags & IFF_ALLMULTI)
- rxconfig |= 0x08;
- if (ifp->if_flags & IFF_PROMISC)
- rxconfig |= 0x10;
- outb_p(port + EN0_RXCR, rxconfig); /* rx on */
-
- /*
- * Mark interface as up and start output.
- */
- ifp->if_flags |= IFF_RUNNING;
- nsstart(sc);
-}
-
-/*
- * Start output on interface.
- * Must be called at splimp().
- */
-void
-nsstart(sc)
- struct nssoftc *sc;
-{
- io_req_t ior;
- struct ifnet *ifp = &sc->sc_if;
-
- /*
- * Drop packets if interface is down.
- */
- if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) {
- while (1) {
- IF_DEQUEUE(&ifp->if_snd, ior);
- if (ior == 0)
- return;
- iodone(ior);
- }
- }
- /*
- * If transmitter is busy, bail out.
- */
- if (sc->sc_oactive)
- return;
-
- /*
- * Dequeue a packet.
- */
- IF_DEQUEUE(&ifp->if_snd, ior);
- if (ior == 0)
- return;
-
- /* Mask interrupts from the ethercard. */
- outb( sc->sc_port + EN0_IMR, 0x00);
-
- if (sc->sc_pingpong) {
- int count, output_page;
-
- if (sc->sc_tx1 == 0) {
- output_page = sc->sc_txstrtpg;
- sc->sc_tx1 = count = (*sc->sc_output)(sc,
- ior->io_count,
- ior->io_data,
- sc->sc_txstrtpg);
- } else if (sc->sc_tx2 == 0) {
- output_page = sc->sc_txstrtpg + 6;
- sc->sc_tx2 = count = (*sc->sc_output)(sc,
- ior->io_count,
- ior->io_data,
- output_page);
- } else {
- sc->sc_oactive = 1;
- IF_PREPEND(&ifp->if_snd, ior);
- return;
- }
-
- DEBUGF({
- struct ether_header *eh;
-
- eh = (struct ether_header *)ior->io_data;
- printf("send: %s%d: %x:%x:%x:%x:%x:%x, "
- "olen %d, len %d\n",
- sc->sc_name, sc->sc_unit,
- eh->ether_dhost[0], eh->ether_dhost[1],
- eh->ether_dhost[2], eh->ether_dhost[3],
- eh->ether_dhost[4], eh->ether_dhost[5],
- ior->io_count, count);
- });
-
- if (!sc->sc_txing) {
- nsxmit(sc, count, output_page);
- if (output_page == sc->sc_txstrtpg)
- sc->sc_tx1 = -1, sc->sc_lasttx = -1;
- else
- sc->sc_tx2 = -1, sc->sc_lasttx = -2;
- }
- sc->sc_oactive = (sc->sc_tx1 && sc->sc_tx2);
- } else {
- int count;
-
- count = (*sc->sc_output)(sc, ior->io_count,
- ior->io_data, sc->sc_txstrtpg);
-
- DEBUGF({
- struct ether_header *eh;
-
- eh = (struct ether_header *)ior->io_data;
- printf("send: %s%d: %x:%x:%x:%x:%x:%x, "
- "olen %d, len %d\n",
- sc->sc_name, sc->sc_unit,
- eh->ether_dhost[0], eh->ether_dhost[1],
- eh->ether_dhost[2], eh->ether_dhost[3],
- eh->ether_dhost[4], eh->ether_dhost[5],
- ior->io_count, count);
- });
-
- nsxmit(sc, count, sc->sc_txstrtpg);
- sc->sc_oactive = 1;
- }
-
- /* reenable 8390 interrupts. */
- outb_p(sc->sc_port + EN0_IMR, ENISR_ALL);
-
- iodone(ior);
-}
-
-/*
- * Interrupt routine.
- * Called by board level driver.
- */
-void
-nsintr(sc)
- struct nssoftc *sc;
-{
- int port = sc->sc_port;
- int interrupts, boguscount = 0;
- struct ifnet *ifp = &sc->sc_if;
-
- if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) {
- DEBUGF(printf("nsintr: %s%d: interface down\n",
- sc->sc_name, sc->sc_unit));
- return;
- }
-
- /*
- * Change to page 0 and read intr status reg.
- */
- outb_p(port + E8390_CMD, E8390_NODMA+E8390_PAGE0);
-
- while ((interrupts = inb_p(port + EN0_ISR)) != 0 && ++boguscount < 9) {
- if (interrupts & ENISR_RDC) {
- /*
- * Ack meaningless DMA complete.
- */
- outb_p(port + EN0_ISR, ENISR_RDC);
- }
-
- if (interrupts & ENISR_OVER)
- nsrxoverrun(sc);
- else if (interrupts & (ENISR_RX+ENISR_RX_ERR)) {
- nsrint(sc);
- }
-
- if (interrupts & ENISR_TX) {
- nsxint(sc);
- }
- else if (interrupts & ENISR_COUNTERS) {
- /*
- * XXX - We really should be storing statistics
- * about the interface. For now we just drop them.
- */
-
- /* reading resets the counters! */
- (void) inb_p(port + EN0_COUNTER0); /* frame */
- (void) inb_p(port + EN0_COUNTER1); /* crc */
- (void) inb_p(port + EN0_COUNTER2); /* miss */
-
- DEBUGF(printf("%s%d: acked counter interrupt.\n",
- sc->sc_name, sc->sc_unit));
-
- outb_p(port + EN0_ISR, ENISR_COUNTERS); /* ack intr */
- }
-
- if (interrupts & ENISR_TX_ERR) {
- DEBUGF(printf("acking transmit error\n"));
- outb_p(port + EN0_ISR, ENISR_TX_ERR); /* ack intr */
- }
-
- outb_p(port + E8390_CMD, E8390_NODMA+E8390_PAGE0+E8390_START);
- }
-
- DEBUGF({
- if (interrupts) {
- printf("%s%d: unknown interrupt 0x%x",
- sc->sc_name, sc->sc_unit, interrupts);
- outb_p(port + E8390_CMD,
- E8390_NODMA+E8390_PAGE0+E8390_START);
- outb_p(port + EN0_ISR, 0xff); /* ack all intrs */
- }
- })
-}
-
-/*
- * Process a transmit interrupt.
- */
-void
-nsxint(sc)
- struct nssoftc *sc;
-{
- int port = sc->sc_port, status;
- struct ifnet *ifp = &sc->sc_if;
-
- status = inb(port + EN0_TSR);
- outb_p(port + EN0_ISR, ENISR_TX); /* ack intr */
-
- sc->sc_txing = 0;
- sc->sc_timer = 0;
- sc->sc_oactive = 0;
-
- if (sc->sc_pingpong) {
- if (sc->sc_tx1 < 0) {
- if (sc->sc_lasttx != 1 && sc->sc_lasttx != -1)
- printf("%s%d: bogus last_tx_buffer %d,"
- "tx1 = %d\n",
- sc->sc_name, sc->sc_unit,
- sc->sc_lasttx, sc->sc_tx1);
- sc->sc_tx1 = 0;
- if (sc->sc_tx2 > 0) {
- nsxmit(sc, sc->sc_tx2, sc->sc_txstrtpg + 6);
- sc->sc_tx2 = -1;
- sc->sc_lasttx = 2;
- } else
- sc->sc_lasttx = 20;
- } else if (sc->sc_tx2 < 0) {
- if (sc->sc_lasttx != 2 && sc->sc_lasttx != -2)
- printf("%s%d: bogus last_tx_buffer %d,"
- "tx2 = %d\n",
- sc->sc_name, sc->sc_unit,
- sc->sc_lasttx, sc->sc_tx2);
- sc->sc_tx2 = 0;
- if (sc->sc_tx1 > 0) {
- nsxmit(sc, sc->sc_tx1, sc->sc_txstrtpg);
- sc->sc_tx1 = -1;
- sc->sc_lasttx = 1;
- } else
- sc->sc_lasttx = 10;
- } else
- printf("%s%d: unexpected TX-done interrupt, "
- "lasttx = %d\n",
- sc->sc_name, sc->sc_unit, sc->sc_lasttx);
- }
- /*
- * Update stats.
- */
- if (status & ENTSR_COL) {
- if (status & ENTSR_ABT)
- ifp->if_collisions += 16;
- else
- ifp->if_collisions += inb(port + EN0_NCR);
- }
- if (status & ENTSR_PTX) {
- DEBUGF(printf("sent: %s%d\n", sc->sc_name, sc->sc_unit));
- ifp->if_opackets++;
- } else
- ifp->if_oerrors++;
-
- /*
- * Start output on interface.
- */
- nsstart(sc);
-}
-
-/*
- * Process a receive interrupt.
- */
-void
-nsrint(sc)
- struct nssoftc *sc;
-{
- int port = sc->sc_port;
- int rxing_page, this_frame, next_frame, current_offset;
- int rx_pkt_count = 0;
- int num_rx_pages = sc->sc_stoppg - sc->sc_rxstrtpg;
- struct nspkthdr rx_frame;
- struct ifnet *ifp = &sc->sc_if;
-
- while (++rx_pkt_count < 10) {
- int pkt_len;
-
- /*
- * Get the rx page (incoming packet pointer).
- */
- outb_p(port + E8390_CMD, E8390_NODMA+E8390_PAGE1);
- rxing_page = inb_p(port + EN1_CURPAG);
- outb_p(port + E8390_CMD, E8390_NODMA+E8390_PAGE0);
-
- /*
- * Remove one frame from the ring.
- * Boundary is always a page behind.
- */
- this_frame = inb_p(port + EN0_BOUNDARY) + 1;
- if (this_frame >= sc->sc_stoppg)
- this_frame = sc->sc_rxstrtpg;
-
- DEBUGF({
- if (this_frame != sc->sc_curpg)
- printf("%s%d: mismatched read page pointers "
- "%x vs %x\n",
- sc->sc_name, sc->sc_unit,
- this_frame, sc->sc_curpg);
- });
-
- if (this_frame == rxing_page) {
- DEBUGF(printf("this_frame = rxing_page!\n"));
- break;
- }
-
- current_offset = this_frame << 8;
- (*sc->sc_input)(sc, sizeof(rx_frame), (char *)&rx_frame,
- current_offset);
-
- pkt_len = rx_frame.count - sizeof(rx_frame);
-
- next_frame = this_frame + 1 + ((pkt_len + 4) >> 8);
-
- if (rx_frame.next != next_frame
- && rx_frame.next != next_frame + 1
- && rx_frame.next != next_frame - num_rx_pages
- && rx_frame.next != next_frame + 1 - num_rx_pages) {
- sc->sc_curpg = rxing_page;
- outb(port + EN0_BOUNDARY, sc->sc_curpg - 1);
- ifp->if_ierrors++;
- DEBUGF(printf("INPUT ERROR?\n"));
- continue;
- }
- if (pkt_len < 60 || pkt_len > 1518) {
- ifp->if_ierrors++;
- DEBUGF(printf("%s%d: bad packet length %d\n",
- sc->sc_name, sc->sc_unit, pkt_len));
- } else if ((rx_frame.status & 0x0f) == ENRSR_RXOK) {
- ipc_kmsg_t kmsg;
-
- kmsg = net_kmsg_get();
- if (kmsg == 0) {
- DEBUGF(printf("%s%d: dropped packet\n",
- sc->sc_name, sc->sc_unit));
- ifp->if_rcvdrops++;
- } else {
- int len, off;
- struct ether_header *eh;
- struct packet_header *pkt;
-
- ifp->if_ipackets++;
- off = current_offset + sizeof(rx_frame);
- eh = ((struct ether_header *)
- (&net_kmsg(kmsg)->header[0]));
- (*sc->sc_input)(sc,
- sizeof(struct ether_header),
- (char *)eh, off);
- off += sizeof(struct ether_header);
- len = pkt_len - sizeof(struct ether_header);
-
- DEBUGF(printf("rcv: %s%d: %x:%x:%x:%x:%x:%x, "
- "len %d, type 0x%x\n",
- sc->sc_name, sc->sc_unit,
- eh->ether_shost[0],
- eh->ether_shost[1],
- eh->ether_shost[2],
- eh->ether_shost[3],
- eh->ether_shost[4],
- eh->ether_shost[5],
- len, eh->ether_type));
-
- pkt = ((struct packet_header *)
- (&net_kmsg(kmsg)->packet[0]));
- (*sc->sc_input)(sc, len, (char *)(pkt+1), off);
- pkt->type = eh->ether_type;
- pkt->length = len+sizeof(struct packet_header);
- net_packet(ifp, kmsg, pkt->length,
- ethernet_priority(kmsg));
- }
- } else {
- DEBUGF(printf("%s%d: bogus packet: "
- "status=0x%x nxpg=0x%x size=%d\n",
- sc->sc_name, sc->sc_unit,
- rx_frame.status, rx_frame.next,
- rx_frame.count));
- ifp->if_ierrors++;
- }
- next_frame = rx_frame.next;
- if (next_frame >= sc->sc_stoppg) {
- DEBUGF(printf("%s%d: next frame inconsistency, 0x%x\n",
- sc->sc_name, sc->sc_unit, next_frame));
- next_frame = sc->sc_rxstrtpg;
- }
- sc->sc_curpg = next_frame;
- outb(port + EN0_BOUNDARY, next_frame - 1);
- }
-
- /*
- * Bug alert! Reset ENISR_OVER to avoid spurious overruns!
- */
- outb_p(port + EN0_ISR, ENISR_RX+ENISR_RX_ERR+ENISR_OVER);
-}
-
-/*
- * Handle a receive overrun condition.
- *
- * XXX - this needs to be gone over in light of the NS documentation.
- */
-void
-nsrxoverrun(sc)
- struct nssoftc *sc;
-{
- int port = sc->sc_port, i;
- extern unsigned delaycount;
-
- printf("%s%d: receive overrun\n", sc->sc_name, sc->sc_unit);
-
- /*
- * We should already be stopped and in page0, but just to be sure...
- */
- outb_p(port + E8390_CMD, E8390_NODMA+E8390_PAGE0+E8390_STOP);
-
- /*
- * Clear remote byte counter registers.
- */
- outb_p(port + EN0_RCNTLO, 0);
- outb_p(port + EN0_RCNTHI, 0);
-
- /*
- * Wait for reset to complete.
- */
- for (i = delaycount*2; i && !(inb_p(port+EN0_ISR) & ENISR_RESET); i--)
- ;
- if (i == 0) {
- printf("%s%d: reset did not complete at overrun\n",
- sc->sc_name, sc->sc_unit);
- nsinit(sc);
- return;
- }
- /*
- * Disable transmitter.
- */
- outb_p(port + EN0_TXCR, E8390_TXOFF);
-
- /*
- * Remove packets.
- */
- nsrint(sc);
-
- outb_p(port + EN0_ISR, 0xff);
- outb_p(port + E8390_CMD, E8390_NODMA+E8390_PAGE0+E8390_START);
- outb_p(port + EN0_TXCR, E8390_TXCONFIG);
-}
-
-/*
- * Trigger a transmit start.
- */
-void
-nsxmit(sc, length, start_page)
- struct nssoftc *sc;
- unsigned length;
- int start_page;
-{
- int port = sc->sc_port;
-
- sc->sc_txing = 1;
- outb_p(port, E8390_NODMA+E8390_PAGE0);
- if (inb_p(port) & E8390_TRANS) {
- printf("%s%d: nsxmit() called with the transmitter busy\n",
- sc->sc_name, sc->sc_unit);
- return;
- }
- outb_p(port + EN0_TCNTLO, length & 0xff);
- outb_p(port + EN0_TCNTHI, (length >> 8) & 0xff);
- outb_p(port + EN0_TPSR, start_page);
- outb_p(port, E8390_NODMA+E8390_TRANS+E8390_START);
- sc->sc_timer = 4;
-}
-
-#endif /* NUL > 0 || NWD > 0 */
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-25 18:27:06 +0000