Initial source

1 files changed, 489 insertions, 0 deletions

diff --git a/i386/i386at/gpl/if_ul.c b/i386/i386at/gpl/if_ul.c
new file mode 100644
index 0000000..59e74f5
--- /dev/null
+++ b/i386/i386at/gpl/if_ul.c
@@ -0,0 +1,489 @@
+/* 
+ * 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 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 <wd.h>
+#include <ul.h>
+#if NUL > 0
+/*
+ * Driver for SMC Ultra ethernet adaptor.
+ * Derived from the Linux driver by Donald Becker.
+ *
+ * Shantanu Goel (goel@cs.columbia.edu)
+ */
+#include <mach/sa/sys/types.h>
+#include "vm_param.h"
+#include <kern/time_out.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 START_PG	0x00	/* first page of TX buffer */
+#define ULTRA_CMDREG	0	/* offset of ASIC command register */
+#define  ULTRA_RESET	0x80	/* board reset in ULTRA_CMDREG */
+#define  ULTRA_MEMEN	0x40	/* enable shared memory */
+#define ULTRA_NIC_OFF	16	/* NIC register offset */
+
+#define ulunit(dev)	minor(dev)
+
+/*
+ * Autoconfiguration stuff.
+ */
+int	ulprobe();
+void	ulattach();
+int	ulstd[] = { 0x200, 0x220, 0x240, 0x280, 0x300, 0x340, 0x380, 0 };
+struct	bus_device *ulinfo[NUL];
+struct	bus_driver uldriver = {
+	ulprobe, 0, ulattach, 0, ulstd, "ul", ulinfo, 0, 0, 0
+};
+
+/*
+ * NS8390 state.
+ */
+struct	nssoftc ulnssoftc[NUL];
+
+/*
+ * Ultra state.
+ */
+struct ulsoftc {
+	int	sc_mstart;	/* start of board's RAM */
+	int	sc_mend;	/* end of board's RAM */
+	int	sc_rmstart;	/* start of receive RAM */
+	int	sc_rmend;	/* end of receive RAM */
+} ulsoftc[NUL];
+
+void	ulstart(int);
+void	ul_reset(struct nssoftc *sc);
+void	ul_input(struct nssoftc *sc, int, char *, int);
+int	ul_output(struct nssoftc *sc, int, char *, int);
+
+/*
+ * Watchdog.
+ */
+int	ulwstart = 0;
+void	ulwatch(void);
+
+#define ULDEBUG
+#ifdef ULDEBUG
+int	uldebug = 0;
+#define DEBUGF(stmt)	{ if (uldebug) stmt; }
+#else
+#define DEBUGF(stmt)
+#endif
+
+/*
+ * Probe for the Ultra.
+ * This looks like an 8013 with the station address PROM
+ * at I/O ports <base>+8 to <base>+13, with a checksum following.
+ */
+int
+ulprobe(xxx, ui)
+	int xxx;
+	struct bus_device *ui;
+{
+	int *port;
+
+	if (ui->unit >= NUL) {
+		printf("ul%d: not configured\n", ui->unit);
+		return (0);
+	}
+	for (port = ulstd; *port; port++) {
+		if (*port < 0)
+			continue;
+		/*
+		 * Check chip ID nibble.
+		 */
+		if ((inb(*port + 7) & 0xf0) != 0x20)
+			continue;
+		if (ulprobe1(*port, ui)) {
+			ui->address = *port;
+			*port = -1;
+#if NWD > 0
+			/*
+			 * XXX: The Western Digital/SMC driver can sometimes
+			 * probe the Ultra incorrectly.  Remove the Ultra's
+			 * port from it's list to avoid the problem.
+			 */
+			{
+				int i;
+				extern int wdstd[];
+
+				for (i = 0; wdstd[i]; i++) {
+					if (wdstd[i] == ui->address) {
+						wdstd[i] = -1;
+						break;
+					}
+				}
+			}
+#endif
+			return (1);
+		}
+	}
+	return (0);
+}
+
+int
+ulprobe1(port, ui)
+	int port;
+	struct bus_device *ui;
+{
+	u_char num_pages, irqreg, addr, reg4;
+	u_char irqmap[] = { 0, 9, 3, 5, 7, 10, 11, 15 };
+	short num_pages_tbl[4] = { 0x20, 0x40, 0x80, 0xff };
+	int i, irq, checksum = 0;
+	int addr_tbl[4] = { 0x0c0000, 0x0e0000, 0xfc0000, 0xfe0000 };
+	struct ulsoftc *ul = &ulsoftc[ui->unit];
+	struct nssoftc *ns = &ulnssoftc[ui->unit];
+	struct ifnet *ifp = &ns->sc_if;
+
+	/*
+	 * Select the station address register set.
+	 */
+	reg4 = inb(port + 4) & 0x7f;
+	outb(port + 4, reg4);
+
+	for (i = 0; i < 8; i++)
+		checksum += inb(port + 8 + i);
+	if ((checksum & 0xff) != 0xff)
+		return (0);
+
+	/*
+	 * Use 2 transmit buffers.
+	 */
+	ns->sc_pingpong = 1;
+
+	printf("ul%d: SMC Ultra at 0x%03x, ", ui->unit, port);
+	for (i = 0; i < ETHER_ADDR_LEN; i++) {
+		if (i == 0)
+			printf("%02x", ns->sc_addr[i] = inb(port + 8 + i));
+		else
+			printf(":%02x", ns->sc_addr[i] = inb(port + 8 + i));
+	}
+	/*
+	 * Switch from station address to alternate register set
+	 * and read useful registers there.
+	 */
+	outb(port + 4, 0x80 | reg4);
+
+	/*
+	 * Enable FINE16 mode to avoid BIOS ROM width mismatches
+	 * during reboot.
+	 */
+	outb(port + 0x0c, 0x80 | inb(port + 0x0c));
+	irqreg = inb(port + 0x0d);
+	addr = inb(port + 0x0b);
+
+	/*
+	 * Switch back to station address register set so the MSDOG
+	 * driver can find the card after a warm boot.
+	 */
+	outb(port + 4, reg4);
+
+	/*
+	 * Determine IRQ.  The IRQ bits are split.
+	 */
+	irq = irqmap[((irqreg & 0x40) >> 4) + ((irqreg & 0x0c) >> 2)];
+	if (irq == 0) {
+		printf(", failed to detect IRQ line.\n");
+		return (0);
+	}
+	ui->sysdep1 = irq;
+	take_dev_irq(ui);
+	printf(", irq %d", irq);
+
+	/*
+	 * Determine board's RAM location.
+	 */
+	ul->sc_mstart = ((addr & 0x0f) << 13) + addr_tbl[(addr >> 6) & 3];
+	num_pages = num_pages_tbl[(addr >> 4) & 3];
+	ul->sc_rmstart = ul->sc_mstart + TX_PAGES(ns) * 256;
+	ul->sc_mend = ul->sc_rmend
+		= ul->sc_mstart + (num_pages - START_PG) * 256;
+	printf(", memory 0x%05x-0x%05x\n", ul->sc_mstart, ul->sc_mend);
+
+	/*
+	 * Initialize 8390 state.
+	 */
+	ns->sc_name = ui->name;
+	ns->sc_unit = ui->unit;
+	ns->sc_port = port + ULTRA_NIC_OFF;
+	ns->sc_word16 = 1;
+	ns->sc_txstrtpg = START_PG;
+	ns->sc_rxstrtpg = START_PG + TX_PAGES(ns);
+	ns->sc_stoppg = num_pages;
+	ns->sc_reset = ul_reset;
+	ns->sc_input = ul_input;
+	ns->sc_output = ul_output;
+
+	DEBUGF(printf("ul%d: txstrtpg %d rxstrtpg %d num_pages %d\n",
+		      ui->unit, ns->sc_txstrtpg, ns->sc_rxstrtpg, num_pages));
+
+	/*
+	 * Initialize interface header.
+	 */
+	ifp->if_unit = ui->unit;
+	ifp->if_mtu = ETHERMTU;
+	ifp->if_flags = IFF_BROADCAST;
+	ifp->if_header_size = sizeof(struct ether_header);
+	ifp->if_header_format = HDR_ETHERNET;
+	ifp->if_address_size = ETHER_ADDR_LEN;
+	ifp->if_address = ns->sc_addr;
+	if_init_queues(ifp);
+
+	return (1);
+}
+
+void
+ulattach(ui)
+	struct bus_device *ui;
+{
+	/*
+	 * void
+	 */
+}
+
+int
+ulopen(dev, flag)
+	dev_t dev;
+	int flag;
+{
+	int unit = ulunit(dev), s;
+	struct bus_device *ui;
+
+	if (unit >= NUL || (ui = ulinfo[unit]) == 0 || ui->alive == 0)
+		return (ENXIO);
+
+	/*
+	 * Start watchdog.
+	 */
+	if (!ulwstart) {
+		ulwstart++;
+		timeout(ulwatch, 0, hz);
+	}
+	ulnssoftc[unit].sc_if.if_flags |= IFF_UP;
+	s = splimp();
+	outb(ui->address, ULTRA_MEMEN);	/* enable memory, 16 bit mode */
+	outb(ui->address + 5, 0x80);
+	outb(ui->address + 6, 0x01);	/* enable interrupts and memory */
+	nsinit(&ulnssoftc[unit]);
+	splx(s);
+	return (0);
+}
+
+int
+uloutput(dev, ior)
+	dev_t dev;
+	io_req_t ior;
+{
+	int unit = ulunit(dev);
+	struct bus_device *ui;
+
+	if (unit >= NUL || (ui = ulinfo[unit]) == 0 || ui->alive == 0)
+		return (ENXIO);
+
+	return (net_write(&ulnssoftc[unit].sc_if, ulstart, ior));
+}
+
+int
+ulsetinput(dev, receive_port, priority, filter, filter_count)
+	dev_t dev;
+	mach_port_t receive_port;
+	int priority;
+	filter_t *filter;
+	unsigned filter_count;
+{
+	int unit = ulunit(dev);
+	struct bus_device *ui;
+
+	if (unit >= NUL || (ui = ulinfo[unit]) == 0 || ui->alive == 0)
+		return (ENXIO);
+
+	return (net_set_filter(&ulnssoftc[unit].sc_if, receive_port,
+			       priority, filter, filter_count));
+}
+
+int
+ulgetstat(dev, flavor, status, count)
+	dev_t dev;
+	int flavor;
+	dev_status_t status;
+	unsigned *count;
+{
+	int unit = ulunit(dev);
+	struct bus_device *ui;
+
+	if (unit >= NUL || (ui = ulinfo[unit]) == 0 || ui->alive == 0)
+		return (ENXIO);
+
+	return (net_getstat(&ulnssoftc[unit].sc_if, flavor, status, count));
+}
+
+int
+ulsetstat(dev, flavor, status, count)
+	dev_t dev;
+	int flavor;
+	dev_status_t status;
+	unsigned count;
+{
+	int unit = ulunit(dev), oflags, s;
+	struct bus_device *ui;
+	struct ifnet *ifp;
+	struct net_status *ns;
+
+	if (unit >= NUL || (ui = ulinfo[unit]) == 0 || ui->alive == 0)
+		return (ENXIO);
+
+	ifp = &ulnssoftc[unit].sc_if;
+
+	switch (flavor) {
+
+	case NET_STATUS:
+		if (count < NET_STATUS_COUNT)
+			return (D_INVALID_SIZE);
+		ns = (struct net_status *)status;
+		oflags = ifp->if_flags & (IFF_ALLMULTI|IFF_PROMISC);
+		ifp->if_flags &= ~(IFF_ALLMULTI|IFF_PROMISC);
+		ifp->if_flags |= ns->flags & (IFF_ALLMULTI|IFF_PROMISC);
+		if ((ifp->if_flags & (IFF_ALLMULTI|IFF_PROMISC)) != oflags) {
+			s = splimp();
+			nsinit(&ulnssoftc[unit]);
+			splx(s);
+		}
+		break;
+
+	default:
+		return (D_INVALID_OPERATION);
+	}
+	return (D_SUCCESS);
+}
+
+void
+ulintr(unit)
+	int unit;
+{
+	nsintr(&ulnssoftc[unit]);
+}
+
+void
+ulstart(unit)
+	int unit;
+{
+	nsstart(&ulnssoftc[unit]);
+}
+
+void
+ul_reset(ns)
+	struct nssoftc *ns;
+{
+	int port = ns->sc_port - ULTRA_NIC_OFF;	/* ASIC base address */
+
+	outb(port, ULTRA_RESET);
+	outb(0x80, 0);			/* I/O delay */
+	outb(port, ULTRA_MEMEN);
+}
+
+void
+ul_input(ns, count, buf, ring_offset)
+	struct nssoftc *ns;
+	int count;
+	char *buf;
+	int ring_offset;
+{
+	int xfer_start;
+	struct ulsoftc *ul = &ulsoftc[ns->sc_unit];
+
+	DEBUGF(printf("ul%d: ring_offset = %d\n", ns->sc_unit, ring_offset));
+
+	xfer_start = ul->sc_mstart + ring_offset - (START_PG << 8);
+	if (xfer_start + count > ul->sc_rmend) {
+		int semi_count = ul->sc_rmend - xfer_start;
+
+		/*
+		 * Input move must be wrapped.
+		 */
+		bcopy((char *)phystokv(xfer_start), buf, semi_count);
+		count -= semi_count;
+		bcopy((char *)phystokv(ul->sc_rmstart), buf+semi_count, count);
+	} else
+		bcopy((char *)phystokv(xfer_start), buf, count);
+}
+
+int
+ul_output(ns, count, buf, start_page)
+	struct nssoftc *ns;
+	int count;
+	char *buf;
+	int start_page;
+{
+	char *shmem;
+	int i;
+	struct ulsoftc *ul = &ulsoftc[ns->sc_unit];
+
+	DEBUGF(printf("ul%d: start_page = %d\n", ns->sc_unit, start_page));
+
+	shmem = (char *)phystokv(ul->sc_mstart + ((start_page-START_PG) << 8));
+	bcopy(buf, shmem, count);
+	while (count <  ETHERMIN + sizeof(struct ether_header)) {
+		*(shmem + count) = 0;
+		count++;
+	}
+	return (count);
+}
+
+/*
+ * Watchdog.
+ * Check for hung transmissions.
+ */
+void
+ulwatch()
+{
+	int unit, s;
+	struct nssoftc *ns;
+
+	timeout(ulwatch, 0, hz);
+
+	s = splimp();
+	for (unit = 0; unit < NUL; unit++) {
+		if (ulinfo[unit] == 0 || ulinfo[unit]->alive == 0)
+			continue;
+		ns = &ulnssoftc[unit];
+		if (ns->sc_timer && --ns->sc_timer == 0) {
+			printf("ul%d: transmission timeout\n", unit);
+			nsinit(ns);
+		}
+	}
+	splx(s);
+}
+
+#endif /* NUL > 0 */