diff options
Diffstat (limited to 'sys/arch/hppa')
| -rw-r--r-- | sys/arch/hppa/dev/mem.c | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/sys/arch/hppa/dev/mem.c b/sys/arch/hppa/dev/mem.c new file mode 100644 index 00000000000..012e640c453 --- /dev/null +++ b/sys/arch/hppa/dev/mem.c @@ -0,0 +1,289 @@ +/* $OpenBSD: mem.c,v 1.1 1998/12/29 21:38:47 mickey Exp $ */ + +/* + * Copyright (c) 1998 Michael Shalayeff + * 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 Michael Shalayeff. + * 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. + */ +/* + * Copyright (c) 1991,1992,1994, The University of Utah and + * the Computer Systems Laboratory (CSL). All rights reserved. + * + * Subject to your agreements with CMU, + * 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 UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS + * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF + * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * CSL requests users of this software to return to csl-dist@cs.utah.edu any + * improvements that they make and grant CSL redistribution rights. + * + * Utah $Hdr: mem.c 1.9 94/12/16$ + */ +/* + * Mach Operating System + * Copyright (c) 1992 Carnegie Mellon University + * 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. + * + * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" + * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR + * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. + * + * Carnegie Mellon requests users of this software to return to + * + * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU + * School of Computer Science + * Carnegie Mellon University + * Pittsburgh PA 15213-3890 + * + * any improvements or extensions that they make and grant Carnegie Mellon + * the rights to redistribute these changes. + */ + +#include <sys/param.h> +#include <sys/types.h> +#include <sys/device.h> + +#include <sys/conf.h> +#include <sys/errno.h> +#include <sys/systm.h> +#include <sys/uio.h> +#include <sys/buf.h> +#include <sys/ioctl.h> +#include <sys/file.h> +#include <sys/proc.h> + +#include <machine/bus.h> +#include <machine/iomod.h> +#include <machine/autoconf.h> + +#include <hppa/dev/cpudevs.h> +#include <hppa/dev/viper.h> + +struct mem_softc { + struct device sc_dev; + + volatile struct vi_trs *sc_vp; +}; + +int memmatch __P((struct device *, void *, void *)); +void memattach __P((struct device *, struct device *, void *)); + +struct cfattach mem_ca = { + sizeof(struct mem_softc), memmatch, memattach +}; + +struct cfdriver mem_cd = { + NULL, "mem", DV_DULL +}; + +#define mmread mmrw +#define mmwrite mmrw +cdev_decl(mm); + +caddr_t zeropage; + +int +memmatch(parent, cfdata, aux) + struct device *parent; + void *cfdata; + void *aux; +{ + register struct confargs *ca = aux; + + if (ca->ca_type.iodc_type != HPPA_TYPE_MEMORY || + ca->ca_type.iodc_sv_model != HPPA_MEMORY_PDEP) + return 0; + return 1; +} + +void +memattach(parent, self, aux) + struct device *parent; + struct device *self; + void *aux; +{ + struct pdc_iodc_minit pdc_minit PDC_ALIGNMENT; + register struct confargs *ca = aux; + register struct mem_softc *sc = (struct mem_softc *)self; + int err; + + printf (":"); + + /* XXX check if we are dealing w/ Viper */ + if (ca->ca_hpa == (hppa_hpa_t)VIPER_HPA) { + int s; + + sc->sc_vp = (struct vi_trs *) + &((struct iomod *)ca->ca_hpa)->priv_trs; + + printf (" viper rev %x, ctrl %b", + sc->sc_vp->vi_status.hw_rev, + VI_CTRL, VIPER_BITS); + + s = splhigh(); + VI_CTRL |= VI_CTRL_ANYDEN; + ((struct vi_ctrl *)&VI_CTRL)->core_den = 0; + ((struct vi_ctrl *)&VI_CTRL)->sgc0_den = 0; + ((struct vi_ctrl *)&VI_CTRL)->sgc1_den = 0; + ((struct vi_ctrl *)&VI_CTRL)->eisa_den = 0; + ((struct vi_ctrl *)&VI_CTRL)->core_prf = 1; + sc->sc_vp->vi_control = VI_CTRL; + splx(s); + + printf (" >> %b", VI_CTRL, VIPER_BITS); + + } else + sc->sc_vp = NULL; + + if ((err = pdc_call((iodcio_t)pdc, 0, PDC_IODC, PDC_IODC_NINIT, + &pdc_minit, ca->ca_hpa, PAGE0->imm_spa_size)) < 0) + printf (" WARNING: cannot determine size (%d)\n", err); + else { + printf (" size %d", pdc_minit.max_spa / (1024*1024)); + if (pdc_minit.max_spa % (1024*1024)) + printf (".%d", pdc_minit.max_spa % (1024*1024)); + printf ("MB\n"); + } +} + +void +viper_setintrwnd(mask) + u_int32_t mask; +{ + register struct mem_softc *sc; + + sc = mem_cd.cd_devs[0]; + + if (sc->sc_vp) + sc->sc_vp->vi_intrwd; +} + +int +mmopen(dev, flag, ioflag, p) + dev_t dev; + int flag; + int ioflag; + struct proc *p; +{ + return (0); +} + +/*ARGSUSED*/ +int +mmclose(dev, flag, mode, p) + dev_t dev; + int flag, mode; + struct proc *p; +{ + return (0); +} + +int +mmrw(dev, uio, flags) + dev_t dev; + struct uio *uio; + int flags; +{ + register u_int c; + register struct iovec *iov; + int error = 0; + + while (uio->uio_resid > 0 && error == 0) { + iov = uio->uio_iov; + if (iov->iov_len == 0) { + uio->uio_iov++; + uio->uio_iovcnt--; + if (uio->uio_iovcnt < 0) + panic("mmrw"); + continue; + } + switch (minor(dev)) { + + /* minor device 0 is physical memory */ + case 0: + break; + /* minor device 1 is kernel memory */ + case 1: + break; + + case 2: + if (uio->uio_rw == UIO_WRITE) + uio->uio_resid = 0; + return (0); + + case 12: + if (uio->uio_rw == UIO_WRITE) { + c = iov->iov_len; + break; + } + c = min(iov->iov_len, CLBYTES); + error = uiomove(zeropage, c, uio); + continue; + default: + return (ENXIO); + } + if (error) + break; + iov->iov_base += c; + iov->iov_len -= c; + uio->uio_offset += c; + uio->uio_resid -= c; + } + return (error); +} + +int +mmmmap(dev, off, prot) + dev_t dev; + int off, prot; +{ + if (minor(dev) != 0) + return (-1); + + /* + * Allow access only in RAM. + */ +#if 0 + if (off < ctob(firstusablepage) || + off >= ctob(lastusablepage + 1)) + return (-1); +#endif + return (btop(off)); +} + |