diff options
Diffstat (limited to 'sys/arch/alpha/pci/cia.c')
| -rw-r--r-- | sys/arch/alpha/pci/cia.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/sys/arch/alpha/pci/cia.c b/sys/arch/alpha/pci/cia.c new file mode 100644 index 00000000000..fa2f49fc6cc --- /dev/null +++ b/sys/arch/alpha/pci/cia.c @@ -0,0 +1,176 @@ +/* $NetBSD: cia.c,v 1.1 1995/11/23 02:37:24 cgd Exp $ */ + +/* + * Copyright (c) 1995 Carnegie-Mellon University. + * All rights reserved. + * + * Author: Chris G. Demetriou + * + * 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 the + * rights to redistribute these changes. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> +#include <sys/malloc.h> +#include <sys/device.h> +#include <vm/vm.h> + +#include <machine/autoconf.h> +#include <machine/rpb.h> + +#include <dev/isa/isareg.h> +#include <dev/isa/isavar.h> + +#include <dev/pci/pcireg.h> +#include <dev/pci/pcivar.h> +#include <alpha/pci/ciareg.h> +#include <alpha/pci/ciavar.h> +#if defined(DEC_KN20AA) +#include <alpha/pci/pci_kn20aa.h> +#endif + +int ciamatch __P((struct device *, void *, void *)); +void ciaattach __P((struct device *, struct device *, void *)); + +struct cfdriver ciacd = { + NULL, "cia", ciamatch, ciaattach, DV_DULL, + sizeof(struct cia_softc) +}; + +static int ciaprint __P((void *, char *pnp)); + +#define REGVAL(r) (*(int32_t *)phystok0seg(r)) + +/* There can be only one. */ +int ciafound; +struct cia_config cia_configuration; + +int +ciamatch(parent, match, aux) + struct device *parent; + void *match, *aux; +{ + struct cfdata *cf = match; + struct confargs *ca = aux; + + /* Make sure that we're looking for a CIA. */ + if (strcmp(ca->ca_name, ciacd.cd_name) != 0) + return (0); + + if (ciafound) + return (0); + + return (1); +} + +/* + * Set up the chipset's function pointers. + */ +void +cia_init(ccp) + struct cia_config *ccp; +{ + + /* + * Can't set up SGMAP data here; can be called before malloc(). + */ + + ccp->cc_conffns = &cia_conf_fns; + ccp->cc_confarg = ccp; + ccp->cc_dmafns = &cia_dma_fns; + ccp->cc_dmaarg = ccp; + /* Interrupt routines set up in 'attach' */ + ccp->cc_memfns = &cia_mem_fns; + ccp->cc_memarg = ccp; + ccp->cc_piofns = &cia_pio_fns; + ccp->cc_pioarg = ccp; +} + +void +ciaattach(parent, self, aux) + struct device *parent, *self; + void *aux; +{ + struct confargs *ca = aux; + struct cia_softc *sc = (struct cia_softc *)self; + struct cia_config *ccp; + struct pci_attach_args pa; + + /* note that we've attached the chipset; can't have 2 CIAs. */ + ciafound = 1; + + /* + * set up the chipset's info; done once at console init time + * (maybe), but doesn't hurt to do twice. + */ + ccp = sc->sc_ccp = &cia_configuration; + cia_init(ccp); + + /* XXX print chipset information */ + printf("\n"); + + switch (hwrpb->rpb_type) { +#if defined(DEC_KN20AA) + case ST_DEC_KN20AA: + pci_kn20aa_pickintr(ccp->cc_conffns, ccp->cc_confarg, + ccp->cc_piofns, ccp->cc_pioarg, + &ccp->cc_intrfns, &ccp->cc_intrarg); +#ifdef EVCNT_COUNTERS + evcnt_attach(self, "intr", &kn20aa_intr_evcnt); +#endif + break; +#endif + default: + panic("ciaattach: shouldn't be here, really..."); + } + + pa.pa_bus = 0; + pa.pa_maxdev = 32; + pa.pa_burstlog2 = 8; + + pa.pa_conffns = ccp->cc_conffns; + pa.pa_confarg = ccp->cc_confarg; + pa.pa_dmafns = ccp->cc_dmafns; + pa.pa_dmaarg = ccp->cc_dmaarg; + pa.pa_intrfns = ccp->cc_intrfns; + pa.pa_intrarg = ccp->cc_intrarg; + pa.pa_memfns = ccp->cc_memfns; + pa.pa_memarg = ccp->cc_memarg; + pa.pa_piofns = ccp->cc_piofns; + pa.pa_pioarg = ccp->cc_pioarg; + + config_found(self, &pa, ciaprint); +} + +static int +ciaprint(aux, pnp) + void *aux; + char *pnp; +{ + register struct pci_attach_args *pa = aux; + + /* only PCIs can attach to CIAs; easy. */ + if (pnp) + printf("pci at %s", pnp); + printf(" bus %d", pa->pa_bus); + return (UNCONF); +} |