Commit for the first real OpenBSD mvme88k port.

1 files changed, 223 insertions, 0 deletions

diff --git a/sys/arch/mvme88k/dev/sram.c b/sys/arch/mvme88k/dev/sram.c
new file mode 100644
index 00000000000..f930c54866b
--- /dev/null
+++ b/sys/arch/mvme88k/dev/sram.c
@@ -0,0 +1,223 @@
+/*	$OpenBSD: sram.c,v 1.1 1998/12/15 05:52:31 smurph Exp $ */
+
+/*
+ * Copyright (c) 1995 Theo de Raadt
+ * 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 under OpenBSD by
+ *	Theo de Raadt for Willowglen Singapore.
+ * 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.
+ */
+
+#include <sys/param.h>
+#include <sys/conf.h>
+#include <sys/ioctl.h>
+#include <sys/buf.h>
+#include <sys/systm.h>
+#include <sys/uio.h>
+#include <sys/malloc.h>
+
+#include <sys/device.h>
+#include <machine/cpu.h>
+#include <machine/autoconf.h>
+#include <machine/mioctl.h>
+#include <vm/vm.h>
+
+struct sramsoftc {
+	struct device	sc_dev;
+	void *		sc_paddr;
+	void *		sc_vaddr;
+	int		sc_len;
+};
+
+void sramattach __P((struct device *, struct device *, void *));
+int  srammatch __P((struct device *, void *, void *));
+
+struct cfattach sram_ca = {
+	sizeof(struct sramsoftc), srammatch, sramattach
+};
+
+struct cfdriver sram_cd = {
+	NULL, "sram", DV_DULL, 0
+};
+
+int
+srammatch(parent, vcf, args)
+	struct device *parent;
+	void *vcf, *args;
+{
+	struct cfdata *cf = vcf;
+	struct confargs *ca = args;
+	int ret;
+
+	if (cputyp != CPU_187)
+		return (0);
+
+	ca->ca_paddr = (void *)0xffe00000;
+	ca->ca_vaddr = (void *)0xffe00000;
+
+	if (ca->ca_vaddr == (void *)-1){
+	    if (badvaddr(ca->ca_vaddr, 4) <= 0){
+		printf("==> sram: failed physical address check.\n");
+		return (0);
+	    }
+	}
+	if (badvaddr(ca->ca_vaddr, 1) <= 0){
+	    printf("==> sram: failed virtual address check.\n");
+	    return (0);
+	}
+	return (1);
+}
+
+void
+sramattach(parent, self, args)
+	struct device *parent, *self;
+	void	*args;
+{
+	struct confargs *ca = args;
+	struct sramsoftc *sc = (struct sramsoftc *)self;
+	struct mcreg *mc;
+	int i;
+
+	switch (cputyp) {
+#ifdef MVME167
+	case CPU_167:
+	case CPU_166:
+		sc->sc_len = 128*1024;		/* always 128K */
+		break;
+#endif
+#ifdef MVME177
+	case CPU_177:
+		sc->sc_len = 128*1024;		/* always 128K */
+		break;
+#endif
+#ifdef MVME187
+	case CPU_187:
+		sc->sc_len = 128*1024;		/* always 128K */
+		break;
+#endif
+	default:
+		sc->sc_len = 0;
+		break;
+	}
+
+	printf(": len %d", sc->sc_len);
+
+	sc->sc_paddr = ca->ca_paddr;
+	sc->sc_vaddr = mapiodev((void *)sc->sc_paddr, sc->sc_len);
+	if (sc->sc_vaddr == NULL) {
+		sc->sc_len = 0;
+		printf(" -- failed to map");
+	}
+	printf("\n");
+}
+
+/*ARGSUSED*/
+int
+sramopen(dev, flag, mode)
+	dev_t dev;
+	int flag, mode;
+{
+	if (minor(dev) >= sram_cd.cd_ndevs ||
+	    sram_cd.cd_devs[minor(dev)] == NULL)
+		return (ENODEV);
+	return (0);
+}
+
+/*ARGSUSED*/
+int
+sramclose(dev, flag, mode)
+	dev_t dev;
+	int flag, mode;
+{
+
+	return (0);
+}
+
+/*ARGSUSED*/
+int
+sramioctl(dev, cmd, data, flag, p)
+	dev_t   dev;
+	caddr_t data;
+	int     cmd, flag;
+	struct proc *p;
+{
+	int unit = minor(dev);
+	struct sramsoftc *sc = (struct sramsoftc *) sram_cd.cd_devs[unit];
+	int error = 0;
+	
+	switch (cmd) {
+	case MIOCGSIZ:
+		*(int *)data = sc->sc_len;
+		break;
+	default:
+		error = ENOTTY;
+		break;
+	}
+	return (error);
+}
+
+/*ARGSUSED*/
+int
+sramread(dev, uio, flags)
+	dev_t dev;
+	struct uio *uio;
+	int flags;
+{
+	int unit = minor(dev);
+	struct sramsoftc *sc = (struct sramsoftc *) sram_cd.cd_devs[unit];
+
+	return (memdevrw(sc->sc_vaddr, sc->sc_len, uio, flags));
+}
+
+/*ARGSUSED*/
+int
+sramwrite(dev, uio, flags)
+	dev_t dev;
+	struct uio *uio;
+	int flags;
+{
+	int unit = minor(dev);
+	struct sramsoftc *sc = (struct sramsoftc *) sram_cd.cd_devs[unit];
+
+	return (memdevrw(sc->sc_vaddr, sc->sc_len, uio, flags));
+}
+
+int
+srammmap(dev, off, prot)
+	dev_t dev;
+	int off, prot;
+{
+	int unit = minor(dev);
+	struct sramsoftc *sc = (struct sramsoftc *) sram_cd.cd_devs[unit];
+
+	if (minor(dev) != 0)
+		return (-1);
+
+	/* allow access only in RAM */
+	if (off > sc->sc_len)
+		return (-1);
+	return (m88k_btop(sc->sc_paddr + off));
+}