/* $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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include 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)); }