initial import of NetBSD tree

1 files changed, 366 insertions, 0 deletions

diff --git a/sys/arch/sun3/dev/if_ie_subr.c b/sys/arch/sun3/dev/if_ie_subr.c
new file mode 100644
index 00000000000..71af7166f5e
--- /dev/null
+++ b/sys/arch/sun3/dev/if_ie_subr.c
@@ -0,0 +1,366 @@
+/*	$NetBSD: if_ie_subr.c,v 1.7 1995/09/26 04:02:04 gwr Exp $	*/
+
+/*
+ * Copyright (c) 1994 Gordon W. Ross
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Gordon Ross
+ * 4. The name of the Author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Machine-dependent glue for the Intel Ethernet (ie) driver.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/protosw.h>
+#include <sys/socket.h>
+#include <net/if.h>
+
+#ifdef INET
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/in_var.h>
+#include <netinet/ip.h>
+#include <netinet/if_ether.h>
+#endif
+
+#include <machine/autoconf.h>
+#include <machine/cpu.h>
+#include <machine/dvma.h>
+#include <machine/isr.h>
+#include <machine/obio.h>
+#include <machine/idprom.h>
+#include <machine/vmparam.h>
+
+#include "i82586.h"
+#include "if_ie.h"
+#include "if_ie_subr.h"
+
+static void ie_obreset __P((struct ie_softc *));
+static void ie_obattend __P((struct ie_softc *));
+static void ie_obrun __P((struct ie_softc *));
+static void ie_vmereset __P((struct ie_softc *));
+static void ie_vmeattend __P((struct ie_softc *));
+static void ie_vmerun __P((struct ie_softc *));
+
+/*
+ * zero/copy functions: OBIO can use the normal functions, but VME
+ *    must do only byte or half-word (16 bit) accesses...
+ */
+static void wcopy(), wzero();
+
+int
+ie_md_match(parent, vcf, args)
+	struct device *parent;
+	void *vcf, *args;
+{
+	struct cfdata *cf = vcf;
+	struct confargs *ca = args;
+	int x, sz;
+
+	switch (ca->ca_bustype) {
+
+	case BUS_OBIO:
+		if (ca->ca_paddr == -1)
+			ca->ca_paddr = OBIO_INTEL_ETHER;
+		sz = 1;
+		break;
+
+	case BUS_VME16:
+		/* No default VME address. */
+		if (ca->ca_paddr == -1)
+			return(0);
+		sz = 2;
+		break;
+
+	default:
+		return (0);
+	}
+
+	/* Default interrupt level. */
+	if (ca->ca_intpri == -1)
+		ca->ca_intpri = 3;
+
+	x = bus_peek(ca->ca_bustype, ca->ca_paddr, sz);
+	return (x != -1);
+}
+
+void
+ie_md_attach(parent, self, args)
+	struct device *parent;
+	struct device *self;
+	void *args;
+{
+	struct ie_softc *sc = (void *) self;
+	struct confargs *ca = args;
+	caddr_t mem, reg;
+
+	/*
+	 * *note*: we don't detect the difference between a VME3E and
+	 * a multibus/vme card.   if you want to use a 3E you'll have
+	 * to fix this.
+	 */
+
+	switch (ca->ca_bustype) {
+	case BUS_OBIO:
+		sc->hard_type = IE_OBIO;
+		sc->reset_586 = ie_obreset;
+		sc->chan_attn = ie_obattend;
+		sc->run_586 = ie_obrun;
+		sc->sc_bcopy = bcopy;
+		sc->sc_bzero = bzero;
+		sc->sc_iobase = (caddr_t)DVMA_OBIO_SLAVE_BASE;
+		sc->sc_msize = MEMSIZE;
+
+		/* Map in the control register. */
+		reg = obio_alloc(ca->ca_paddr, OBIO_INTEL_ETHER_SIZE);
+		if (reg == NULL)
+			panic(": not enough obio space\n");
+		sc->sc_reg = reg;
+
+		/* Allocate "shared" memory (DVMA space). */
+		mem = dvma_malloc(sc->sc_msize);
+		if (mem == NULL)
+			panic(": not enough dvma space");
+		sc->sc_maddr = mem;
+
+		/* This is a FIXED address, in a page left by the PROM. */
+		sc->scp = (volatile struct ie_sys_conf_ptr *)
+		    (sc->sc_iobase + IE_SCP_ADDR);
+
+		/* Install interrupt handler. */
+		isr_add_autovect(ie_intr, (void *)sc, ca->ca_intpri);
+
+		break;
+
+	case BUS_VME16: {
+		volatile struct ievme *iev;
+		u_long  rampaddr;
+		int     lcv;
+
+		sc->hard_type = IE_VME;
+		sc->reset_586 = ie_vmereset;
+		sc->chan_attn = ie_vmeattend;
+		sc->run_586 = ie_vmerun;
+		sc->sc_bcopy = wcopy;
+		sc->sc_bzero = wzero;
+		sc->sc_msize = MEMSIZE;
+		sc->sc_reg = bus_mapin(ca->ca_bustype, ca->ca_paddr,
+							   sizeof(struct ievme));
+
+		iev = (volatile struct ievme *) sc->sc_reg;
+		/* top 12 bits */
+		rampaddr = ca->ca_paddr & 0xfff00000;
+		/* 4 more */
+		rampaddr |= ((iev->status & IEVME_HADDR) << 16);
+		sc->sc_maddr = bus_mapin(ca->ca_bustype, rampaddr, sc->sc_msize);
+		sc->sc_iobase = sc->sc_maddr;
+		iev->pectrl = iev->pectrl | IEVME_PARACK; /* clear to start */
+
+		sc->scp = (volatile struct ie_sys_conf_ptr *)
+		    (sc->sc_iobase + (IE_SCP_ADDR & (IEVME_PAGESIZE - 1)));
+
+		/*
+		 * set up mappings, direct map except for last page
+		 * which is mapped at zero and at high address (for
+		 * scp), zero ram
+		 */
+
+		for (lcv = 0; lcv < IEVME_MAPSZ - 1; lcv++)
+			iev->pgmap[lcv] = IEVME_SBORDR | IEVME_OBMEM | lcv;
+		iev->pgmap[IEVME_MAPSZ - 1] = IEVME_SBORDR | IEVME_OBMEM | 0;
+		(sc->sc_bzero)(sc->sc_maddr, sc->sc_msize);
+
+		isr_add_vectored(ie_intr, (void *)sc,
+						 ca->ca_intpri,
+						 ca->ca_intvec);
+		break;
+	}
+
+	default:
+		printf("unknown\n");
+		return;
+	}
+
+	/*
+	 * set up pointers to data structures and buffer area.
+	 */
+	sc->iscp = (volatile struct ie_int_sys_conf_ptr *)
+	    sc->sc_maddr;
+	sc->scb = (volatile struct ie_sys_ctl_block *)
+	    sc->sc_maddr + sizeof(struct ie_int_sys_conf_ptr);
+
+	/*
+	 * rest of first page is unused, rest of ram
+	 * for buffers
+	 */
+	sc->buf_area = sc->sc_maddr + IEVME_PAGESIZE;
+	sc->buf_area_sz = sc->sc_msize - IEVME_PAGESIZE;
+
+	idprom_etheraddr(sc->sc_addr); /* ethernet addr */
+}
+
+
+/*
+ * MULTIBUS/VME support
+ */
+void 
+ie_vmereset(sc)
+	struct ie_softc *sc;
+{
+	volatile struct ievme *iev = (struct ievme *) sc->sc_reg;
+	iev->status = IEVME_RESET;
+	delay(100);		/* XXX could be shorter? */
+	iev->status = 0;
+}
+
+void 
+ie_vmeattend(sc)
+	struct ie_softc *sc;
+{
+	volatile struct ievme *iev = (struct ievme *) sc->sc_reg;
+
+	iev->status |= IEVME_ATTEN;	/* flag! */
+	iev->status &= ~IEVME_ATTEN;	/* down. */
+}
+
+void 
+ie_vmerun(sc)
+	struct ie_softc *sc;
+{
+	volatile struct ievme *iev = (struct ievme *) sc->sc_reg;
+
+	iev->status |= (IEVME_ONAIR | IEVME_IENAB | IEVME_PEINT);
+}
+
+/*
+ * onboard ie support
+ */
+void
+ie_obreset(sc)
+	struct ie_softc *sc;
+{
+	volatile struct ieob *ieo = (struct ieob *) sc->sc_reg;
+	ieo->obctrl = 0;
+	delay(100);			/* XXX could be shorter? */
+	ieo->obctrl = IEOB_NORSET;
+}
+void
+ie_obattend(sc)
+	struct ie_softc *sc;
+{
+	volatile struct ieob *ieo = (struct ieob *) sc->sc_reg;
+
+	ieo->obctrl |= IEOB_ATTEN;	/* flag! */
+	ieo->obctrl &= ~IEOB_ATTEN;	/* down. */
+}
+
+void
+ie_obrun(sc)
+	struct ie_softc *sc;
+{
+	volatile struct ieob *ieo = (struct ieob *) sc->sc_reg;
+
+	ieo->obctrl |= (IEOB_ONAIR|IEOB_IENAB|IEOB_NORSET);
+}
+
+/*
+ * wcopy/wzero - like bcopy/bzero but largest access is 16-bits,
+ * and also does byte swaps...
+ * XXX - Would be nice to have asm versions in some library...
+ */
+
+static void
+wzero(vb, l)
+	void *vb;
+	u_int l;
+{
+	u_char *b = vb;
+	u_char *be = b + l;
+	u_short *sp;
+
+	if (l == 0)
+		return;
+
+	/* front, */
+	if ((u_long)b & 1)
+		*b++ = 0;
+
+	/* back, */
+	if (b != be && ((u_long)be & 1) != 0) {
+		be--;
+		*be = 0;
+	}
+
+	/* and middle. */
+	sp = (u_short *)b;
+	while (sp != (u_short *)be)
+		*sp++ = 0;
+}
+
+static void
+wcopy(vb1, vb2, l)
+	const void *vb1;
+	void *vb2;
+	u_int l;
+{
+	const u_char *b1e, *b1 = vb1;
+	u_char *b2 = vb2;
+	u_short *sp;
+	int bstore = 0;
+
+	if (l == 0)
+		return;
+
+	/* front, */
+	if ((u_long)b1 & 1) {
+		*b2++ = *b1++;
+		l--;
+	}
+
+	/* middle, */
+	sp = (u_short *)b1;
+	b1e = b1 + l;
+	if (l & 1)
+		b1e--;
+	bstore = (u_long)b2 & 1;
+
+	while (sp < (u_short *)b1e) {
+		if (bstore) {
+			b2[1] = *sp & 0xff;
+			b2[0] = *sp >> 8;
+		} else
+			*((short *)b2) = *sp;
+		sp++;
+		b2 += 2;
+	}
+
+	/* and back. */
+	if (l & 1)
+		*b2 = *b1e;
+}