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sio.c revision 1.4 
      1 /*	$NetBSD: sio.c,v 1.4 1996/03/17 01:06:35 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 #include <sys/param.h>
     31 #include <sys/systm.h>
     32 #include <sys/kernel.h>
     33 #include <sys/device.h>
     34 
     35 #include <dev/isa/isavar.h>
     36 #include <dev/eisa/eisavar.h>
     37 
     38 #include <dev/pci/pcireg.h>
     39 #include <dev/pci/pcivar.h>
     40 #include <dev/pci/pcidevs.h>
     41 
     42 #include <alpha/pci/siovar.h>
     43 
     44 int	siomatch __P((struct device *, void *, void *));
     45 void	sioattach __P((struct device *, struct device *, void *));
     46 
     47 struct cfattach sio_ca = {
     48 	sizeof(struct device), siomatch, sioattach
     49 };
     50 
     51 struct cfdriver sio_cd = {
     52 	NULL, "sio", DV_DULL
     53 };
     54 
     55 int	pcebmatch __P((struct device *, void *, void *));
     56 
     57 struct cfattach pceb_ca = {
     58 	sizeof(struct device), pcebmatch, sioattach
     59 };
     60 
     61 struct cfdriver pceb_cd = {
     62 	NULL, "pceb", DV_DULL
     63 };
     64 
     65 static int	sioprint __P((void *, char *pnp));
     66 
     67 int
     68 siomatch(parent, match, aux)
     69 	struct device *parent;
     70 	void *match, *aux;
     71 {
     72 	struct cfdata *cf = match;
     73 	struct pcidev_attach_args *pda = aux;
     74 
     75 	if (PCI_VENDOR(pda->pda_id) != PCI_VENDOR_INTEL ||
     76 	    PCI_PRODUCT(pda->pda_id) != PCI_PRODUCT_INTEL_SIO)
     77 		return (0);
     78 
     79 	return (1);
     80 }
     81 
     82 int
     83 pcebmatch(parent, match, aux)
     84 	struct device *parent;
     85 	void *match, *aux;
     86 {
     87 	struct cfdata *cf = match;
     88 	struct pcidev_attach_args *pda = aux;
     89 
     90 	if (PCI_VENDOR(pda->pda_id) != PCI_VENDOR_INTEL ||
     91 	    PCI_PRODUCT(pda->pda_id) != PCI_PRODUCT_INTEL_PCEB)
     92 		return (0);
     93 
     94 	return (1);
     95 }
     96 
     97 void
     98 sioattach(parent, self, aux)
     99 	struct device *parent, *self;
    100 	void *aux;
    101 {
    102 	struct pcidev_attach_args *pda = aux;
    103 	struct isa_attach_args ia;
    104 	struct eisa_attach_args ea;
    105 	int sio, haseisa;
    106 	char devinfo[256];
    107 
    108 	sio = (PCI_PRODUCT(pda->pda_id) == PCI_PRODUCT_INTEL_SIO);
    109 	haseisa = (PCI_PRODUCT(pda->pda_id) == PCI_PRODUCT_INTEL_PCEB);
    110 
    111 	pci_devinfo(pda->pda_id, pda->pda_class, 0, devinfo);
    112 	printf(": %s (rev. 0x%02x)\n", devinfo,
    113 	    PCI_REVISION(pda->pda_class));
    114 
    115 	if (sio) {
    116 		pci_revision_t rev;
    117 
    118 		rev = PCI_REVISION(pda->pda_class);
    119 
    120 		if (rev < 3)
    121 			printf("%s: WARNING: SIO I SUPPORT UNTESTED\n",
    122 			    self->dv_xname);
    123 	}
    124 
    125 #ifdef EVCNT_COUNTERS
    126 	evcnt_attach(self, "intr", &sio_intr_evcnt);
    127 #endif
    128 
    129 	ia.ia_bus = BUS_ISA;
    130 	ia.ia_dmafns = pda->pda_dmafns;
    131 	ia.ia_dmaarg = pda->pda_dmaarg;
    132 	ia.ia_intrfns = &sio_isa_intr_fns;
    133 	ia.ia_intrarg = NULL;			/* XXX needs nothing */
    134 	ia.ia_memfns = pda->pda_memfns;
    135 	ia.ia_memarg = pda->pda_memarg;
    136 	ia.ia_piofns = pda->pda_piofns;
    137 	ia.ia_pioarg = pda->pda_pioarg;
    138 	config_found(self, &ia, sioprint);
    139 
    140 	if (haseisa) {
    141 		ea.ea_bus = BUS_EISA;
    142 		ea.ea_dmafns = pda->pda_dmafns;
    143 		ea.ea_dmaarg = pda->pda_dmaarg;
    144 		ea.ea_intrfns = &sio_isa_intr_fns;
    145 		ea.ea_intrarg = NULL;		/* XXX needs nothing */
    146 		ea.ea_memfns = pda->pda_memfns;
    147 		ea.ea_memarg = pda->pda_memarg;
    148 		ea.ea_piofns = pda->pda_piofns;
    149 		ea.ea_pioarg = pda->pda_pioarg;
    150 		config_found(self, &ea, sioprint);
    151 	}
    152 }
    153 
    154 static int
    155 sioprint(aux, pnp)
    156 	void *aux;
    157 	char *pnp;
    158 {
    159         register struct isa_attach_args *ia = aux;
    160 
    161 	/*
    162 	 * XXX Assumes that the first fields of 'struct isa_attach_args'
    163 	 * XXX and 'struct eisa_attach_args' are the same.
    164 	 */
    165 
    166         if (pnp)
    167                 printf("%s at %s", isa_bustype_name(ia->ia_bus), pnp);
    168         return (UNCONF);
    169 }
    170