Home | History | Annotate | Line # | Download | only in pci
sio.c revision 1.7 
      1 /*	$NetBSD: sio.c,v 1.7 1996/04/12 06:09:00 cgd Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995, 1996 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 <machine/intr.h>
     36 #include <machine/bus.h>
     37 
     38 #include <dev/isa/isavar.h>
     39 #include <dev/eisa/eisavar.h>
     40 
     41 #include <dev/pci/pcireg.h>
     42 #include <dev/pci/pcivar.h>
     43 #include <dev/pci/pcidevs.h>
     44 
     45 #include <alpha/pci/siovar.h>
     46 
     47 int	siomatch __P((struct device *, void *, void *));
     48 void	sioattach __P((struct device *, struct device *, void *));
     49 
     50 struct cfattach sio_ca = {
     51 	sizeof(struct device), siomatch, sioattach,
     52 };
     53 
     54 struct cfdriver sio_cd = {
     55 	NULL, "sio", DV_DULL,
     56 };
     57 
     58 int	pcebmatch __P((struct device *, void *, void *));
     59 
     60 struct cfattach pceb_ca = {
     61 	sizeof(struct device), pcebmatch, sioattach,
     62 };
     63 
     64 struct cfdriver pceb_cd = {
     65 	NULL, "pceb", DV_DULL,
     66 };
     67 
     68 union sio_attach_args {
     69 	const char *sa_name;			/* XXX should be common */
     70 	struct isabus_attach_args sa_iba;
     71 	struct eisabus_attach_args sa_eba;
     72 };
     73 
     74 static int	sioprint __P((void *, char *pnp));
     75 static void	sio_isa_attach_hook __P((struct device *, struct device *,
     76 		    struct isabus_attach_args *));
     77 
     78 int
     79 siomatch(parent, match, aux)
     80 	struct device *parent;
     81 	void *match, *aux;
     82 {
     83 	struct cfdata *cf = match;
     84 	struct pci_attach_args *pa = aux;
     85 
     86 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL ||
     87 	    PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_INTEL_SIO)
     88 		return (0);
     89 
     90 	return (1);
     91 }
     92 
     93 int
     94 pcebmatch(parent, match, aux)
     95 	struct device *parent;
     96 	void *match, *aux;
     97 {
     98 	struct cfdata *cf = match;
     99 	struct pci_attach_args *pa = aux;
    100 
    101 	if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL ||
    102 	    PCI_PRODUCT(pa->pa_id) != PCI_PRODUCT_INTEL_PCEB)
    103 		return (0);
    104 
    105 	return (1);
    106 }
    107 
    108 void
    109 sioattach(parent, self, aux)
    110 	struct device *parent, *self;
    111 	void *aux;
    112 {
    113 	struct pci_attach_args *pa = aux;
    114 	struct alpha_isa_chipset ic;
    115 	struct alpha_eisa_chipset ec;
    116 	union sio_attach_args sa;
    117 	int sio, haseisa;
    118 	char devinfo[256];
    119 
    120 	sio = (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_SIO);
    121 	haseisa = (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PCEB);
    122 
    123 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
    124 	printf(": %s (rev. 0x%02x)\n", devinfo,
    125 	    PCI_REVISION(pa->pa_class));
    126 
    127 	if (sio) {
    128 		pci_revision_t rev;
    129 
    130 		rev = PCI_REVISION(pa->pa_class);
    131 
    132 		if (rev < 3)
    133 			printf("%s: WARNING: SIO I SUPPORT UNTESTED\n",
    134 			    self->dv_xname);
    135 	}
    136 
    137 #ifdef EVCNT_COUNTERS
    138 	evcnt_attach(self, "intr", &sio_intr_evcnt);
    139 #endif
    140 
    141 	if (haseisa) {
    142 		/* XXX SET UP EISA CHIPSET */
    143 		sa.sa_eba.eba_busname = "eisa";
    144 		sa.sa_eba.eba_bc = pa->pa_bc;
    145 		sa.sa_eba.eba_ec = &ec;
    146 		config_found(self, &sa.sa_eba, sioprint);
    147 	}
    148 
    149 	ic.ic_v = NULL;
    150 	ic.ic_attach_hook = sio_isa_attach_hook;
    151 	ic.ic_intr_establish = sio_intr_establish;
    152 	ic.ic_intr_disestablish = sio_intr_disestablish;
    153 
    154 	sa.sa_iba.iba_busname = "isa";
    155 	sa.sa_iba.iba_bc = pa->pa_bc;
    156 	sa.sa_iba.iba_ic = &ic;
    157 	config_found(self, &sa.sa_iba, sioprint);
    158 }
    159 
    160 static int
    161 sioprint(aux, pnp)
    162 	void *aux;
    163 	char *pnp;
    164 {
    165         register union sio_attach_args *sa = aux;
    166 
    167         if (pnp)
    168                 printf("%s at %s", sa->sa_name, pnp);
    169         return (UNCONF);
    170 }
    171 
    172 static void
    173 sio_isa_attach_hook(parent, self, iba)
    174 	struct device *parent, *self;
    175 	struct isabus_attach_args *iba;
    176 {
    177 
    178 	/* Nothing to do. */
    179 }
    180