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pcib.c revision 1.3.4.4
      1  1.3.4.4      yamt /*	$NetBSD: pcib.c,v 1.3.4.4 2009/09/16 13:37:44 yamt Exp $	*/
      2      1.1   xtraeme 
      3      1.1   xtraeme /*-
      4      1.1   xtraeme  * Copyright (c) 1996, 1998 The NetBSD Foundation, Inc.
      5      1.1   xtraeme  * All rights reserved.
      6      1.1   xtraeme  *
      7      1.1   xtraeme  * This code is derived from software contributed to The NetBSD Foundation
      8      1.1   xtraeme  * by Jason R. Thorpe.
      9      1.1   xtraeme  *
     10      1.1   xtraeme  * Redistribution and use in source and binary forms, with or without
     11      1.1   xtraeme  * modification, are permitted provided that the following conditions
     12      1.1   xtraeme  * are met:
     13      1.1   xtraeme  * 1. Redistributions of source code must retain the above copyright
     14      1.1   xtraeme  *    notice, this list of conditions and the following disclaimer.
     15      1.1   xtraeme  * 2. Redistributions in binary form must reproduce the above copyright
     16      1.1   xtraeme  *    notice, this list of conditions and the following disclaimer in the
     17      1.1   xtraeme  *    documentation and/or other materials provided with the distribution.
     18      1.1   xtraeme  *
     19      1.1   xtraeme  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20      1.1   xtraeme  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21      1.1   xtraeme  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22      1.1   xtraeme  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23      1.1   xtraeme  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24      1.1   xtraeme  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25      1.1   xtraeme  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26      1.1   xtraeme  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27      1.1   xtraeme  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28      1.1   xtraeme  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29      1.1   xtraeme  * POSSIBILITY OF SUCH DAMAGE.
     30      1.1   xtraeme  */
     31      1.1   xtraeme 
     32      1.1   xtraeme #include <sys/cdefs.h>
     33  1.3.4.4      yamt __KERNEL_RCSID(0, "$NetBSD: pcib.c,v 1.3.4.4 2009/09/16 13:37:44 yamt Exp $");
     34      1.1   xtraeme 
     35      1.1   xtraeme #include <sys/types.h>
     36      1.1   xtraeme #include <sys/param.h>
     37      1.1   xtraeme #include <sys/systm.h>
     38      1.1   xtraeme #include <sys/device.h>
     39      1.1   xtraeme 
     40      1.1   xtraeme #include <machine/bus.h>
     41      1.1   xtraeme 
     42      1.1   xtraeme #include <dev/isa/isavar.h>
     43      1.1   xtraeme 
     44      1.1   xtraeme #include <dev/pci/pcivar.h>
     45      1.1   xtraeme #include <dev/pci/pcireg.h>
     46      1.1   xtraeme 
     47      1.1   xtraeme #include <dev/pci/pcidevs.h>
     48      1.1   xtraeme 
     49      1.1   xtraeme #include "isa.h"
     50  1.3.4.2      yamt #include "pcibvar.h"
     51      1.1   xtraeme 
     52  1.3.4.2      yamt int	pcibmatch(device_t, cfdata_t, void *);
     53      1.1   xtraeme 
     54  1.3.4.2      yamt CFATTACH_DECL3_NEW(pcib, sizeof(struct pcib_softc),
     55  1.3.4.3      yamt     pcibmatch, pcibattach, pcibdetach, NULL, pcibrescan, pcibchilddet,
     56  1.3.4.2      yamt     DVF_DETACH_SHUTDOWN);
     57      1.1   xtraeme 
     58      1.3    dyoung void	pcib_callback(device_t);
     59      1.1   xtraeme 
     60      1.1   xtraeme int
     61  1.3.4.2      yamt pcibmatch(device_t parent, cfdata_t match, void *aux)
     62      1.1   xtraeme {
     63      1.1   xtraeme 	struct pci_attach_args *pa = aux;
     64      1.1   xtraeme 
     65      1.1   xtraeme #if 0
     66      1.1   xtraeme 	/*
     67      1.1   xtraeme 	 * PCI-ISA bridges are matched on class/subclass.
     68      1.1   xtraeme 	 * This list contains only the bridges where correct
     69      1.1   xtraeme 	 * (or incorrect) behaviour is not yet confirmed.
     70      1.1   xtraeme 	 */
     71      1.1   xtraeme 	switch (PCI_VENDOR(pa->pa_id)) {
     72      1.1   xtraeme 	case PCI_VENDOR_INTEL:
     73      1.1   xtraeme 		switch (PCI_PRODUCT(pa->pa_id)) {
     74      1.1   xtraeme 		case PCI_PRODUCT_INTEL_82426EX:
     75      1.1   xtraeme 		case PCI_PRODUCT_INTEL_82380AB:
     76      1.1   xtraeme 			return (1);
     77      1.1   xtraeme 		}
     78      1.1   xtraeme 		break;
     79      1.1   xtraeme 
     80      1.1   xtraeme 	case PCI_VENDOR_UMC:
     81      1.1   xtraeme 		switch (PCI_PRODUCT(pa->pa_id)) {
     82      1.1   xtraeme 		case PCI_PRODUCT_UMC_UM8886F:
     83      1.1   xtraeme 		case PCI_PRODUCT_UMC_UM82C886:
     84      1.1   xtraeme 			return (1);
     85      1.1   xtraeme 		}
     86      1.1   xtraeme 		break;
     87      1.1   xtraeme 	case PCI_VENDOR_ALI:
     88      1.1   xtraeme 		switch (PCI_PRODUCT(pa->pa_id)) {
     89      1.1   xtraeme 		case PCI_PRODUCT_ALI_M1449:
     90      1.1   xtraeme 		case PCI_PRODUCT_ALI_M1543:
     91      1.1   xtraeme 			return (1);
     92      1.1   xtraeme 		}
     93      1.1   xtraeme 		break;
     94      1.1   xtraeme 	case PCI_VENDOR_COMPAQ:
     95      1.1   xtraeme 		switch (PCI_PRODUCT(pa->pa_id)) {
     96      1.1   xtraeme 		case PCI_PRODUCT_COMPAQ_PCI_ISA_BRIDGE:
     97      1.1   xtraeme 			return (1);
     98      1.1   xtraeme 		}
     99      1.1   xtraeme 		break;
    100      1.1   xtraeme 	case PCI_VENDOR_VIATECH:
    101      1.1   xtraeme 		switch (PCI_PRODUCT(pa->pa_id)) {
    102      1.1   xtraeme 		case PCI_PRODUCT_VIATECH_VT82C570MV:
    103      1.1   xtraeme 		case PCI_PRODUCT_VIATECH_VT82C586_ISA:
    104      1.1   xtraeme 			return (1);
    105      1.1   xtraeme 		}
    106      1.1   xtraeme 		break;
    107      1.1   xtraeme 	}
    108      1.1   xtraeme #endif
    109      1.1   xtraeme 
    110      1.1   xtraeme 	/*
    111      1.1   xtraeme 	 * some special cases:
    112      1.1   xtraeme 	 */
    113      1.1   xtraeme 	switch (PCI_VENDOR(pa->pa_id)) {
    114      1.1   xtraeme 	case PCI_VENDOR_INTEL:
    115      1.1   xtraeme 		switch (PCI_PRODUCT(pa->pa_id)) {
    116      1.1   xtraeme 		case PCI_PRODUCT_INTEL_SIO:
    117      1.1   xtraeme 			/*
    118      1.1   xtraeme 			 * The Intel SIO identifies itself as a
    119      1.1   xtraeme 			 * miscellaneous prehistoric.
    120      1.1   xtraeme 			 */
    121      1.1   xtraeme 		case PCI_PRODUCT_INTEL_82371MX:
    122      1.1   xtraeme 			/*
    123      1.1   xtraeme 			 * The Intel 82371MX identifies itself erroneously as a
    124      1.1   xtraeme 			 * miscellaneous bridge.
    125      1.1   xtraeme 			 */
    126      1.1   xtraeme 		case PCI_PRODUCT_INTEL_82371AB_ISA:
    127      1.1   xtraeme 			/*
    128      1.1   xtraeme 			 * Some Intel 82371AB PCI-ISA bridge identifies
    129      1.1   xtraeme 			 * itself as miscellaneous bridge.
    130      1.1   xtraeme 			 */
    131      1.1   xtraeme 			return (1);
    132      1.1   xtraeme 		}
    133      1.1   xtraeme 		break;
    134      1.1   xtraeme 	case PCI_VENDOR_SIS:
    135      1.1   xtraeme 		switch (PCI_PRODUCT(pa->pa_id)) {
    136      1.1   xtraeme 		case PCI_PRODUCT_SIS_85C503:
    137      1.1   xtraeme 			/*
    138      1.1   xtraeme 			 * The SIS 85C503 identifies itself as a
    139      1.1   xtraeme 			 * miscellaneous prehistoric.
    140      1.1   xtraeme 			 */
    141      1.1   xtraeme 			return (1);
    142      1.1   xtraeme 		}
    143      1.1   xtraeme 		break;
    144      1.1   xtraeme 	case PCI_VENDOR_VIATECH:
    145      1.1   xtraeme 		switch (PCI_PRODUCT(pa->pa_id)) {
    146      1.1   xtraeme 		case PCI_PRODUCT_VIATECH_VT82C686A_SMB:
    147      1.1   xtraeme 			/*
    148      1.1   xtraeme 			 * The VIA VT82C686A SMBus Controller itself as
    149      1.1   xtraeme 			 * ISA bridge, but it's wrong !
    150      1.1   xtraeme 			 */
    151      1.1   xtraeme 			return (0);
    152      1.1   xtraeme 		}
    153      1.1   xtraeme 	/*
    154      1.1   xtraeme 	 * The Cyrix cs5530 PCI host bridge does not have a broken
    155      1.1   xtraeme 	 * latch on the i8254 clock core, unlike its predecessors
    156      1.1   xtraeme 	 * the cs5510 and cs5520. This reverses the setting from
    157      1.1   xtraeme 	 * i386/i386/identcpu.c where it arguably should not have
    158      1.1   xtraeme 	 * been set in the first place. XXX
    159      1.1   xtraeme 	 */
    160      1.1   xtraeme 	case PCI_VENDOR_CYRIX:
    161      1.1   xtraeme 		switch (PCI_PRODUCT(pa->pa_id)) {
    162      1.1   xtraeme 		case PCI_PRODUCT_CYRIX_CX5530_PCIB:
    163  1.3.4.2      yamt #if !defined(XEN)
    164      1.1   xtraeme 			{
    165      1.1   xtraeme 				extern int clock_broken_latch;
    166      1.1   xtraeme 
    167      1.1   xtraeme 				clock_broken_latch = 0;
    168      1.1   xtraeme 			}
    169  1.3.4.2      yamt #endif
    170      1.1   xtraeme 			return(1);
    171      1.1   xtraeme 		}
    172      1.1   xtraeme 		break;
    173      1.1   xtraeme 	}
    174      1.1   xtraeme 
    175      1.1   xtraeme 	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_BRIDGE &&
    176      1.1   xtraeme 	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_BRIDGE_ISA) {
    177      1.1   xtraeme 		return (1);
    178      1.1   xtraeme 	}
    179      1.1   xtraeme 
    180      1.1   xtraeme 	return (0);
    181      1.1   xtraeme }
    182      1.1   xtraeme 
    183      1.1   xtraeme void
    184      1.3    dyoung pcibattach(device_t parent, device_t self, void *aux)
    185      1.1   xtraeme {
    186      1.2  jmcneill 	struct pcib_softc *sc = device_private(self);
    187      1.1   xtraeme 	struct pci_attach_args *pa = aux;
    188      1.1   xtraeme 	char devinfo[256];
    189      1.1   xtraeme 
    190      1.1   xtraeme 	aprint_naive("\n");
    191      1.1   xtraeme 
    192      1.1   xtraeme 	/*
    193      1.1   xtraeme 	 * Just print out a description and defer configuration
    194      1.1   xtraeme 	 * until all PCI devices have been attached.
    195      1.1   xtraeme 	 */
    196      1.1   xtraeme 	pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
    197  1.3.4.4      yamt 	aprint_normal(": %s (rev. 0x%02x)\n", devinfo,
    198      1.1   xtraeme 	    PCI_REVISION(pa->pa_class));
    199      1.1   xtraeme 
    200      1.2  jmcneill 	sc->sc_pc = pa->pa_pc;
    201      1.2  jmcneill 	sc->sc_tag = pa->pa_tag;
    202      1.2  jmcneill 
    203      1.2  jmcneill 	/* If a more specific pcib implementation has already registered a
    204      1.2  jmcneill 	 * power handler, don't overwrite it.
    205      1.2  jmcneill 	 */
    206      1.2  jmcneill  	if (!device_pmf_is_registered(self)) {
    207      1.2  jmcneill  		if (!pmf_device_register(self, NULL, NULL))
    208      1.2  jmcneill  	    		aprint_error_dev(self, "couldn't establish power handler\n");
    209      1.2  jmcneill 	}
    210      1.2  jmcneill 
    211      1.1   xtraeme 	config_defer(self, pcib_callback);
    212      1.1   xtraeme }
    213      1.1   xtraeme 
    214      1.3    dyoung int
    215      1.3    dyoung pcibdetach(device_t self, int flags)
    216      1.3    dyoung {
    217      1.3    dyoung 	int rc;
    218      1.3    dyoung 
    219      1.3    dyoung 	if ((rc = config_detach_children(self, flags)) != 0)
    220      1.3    dyoung 		return rc;
    221      1.3    dyoung 	pmf_device_deregister(self);
    222      1.3    dyoung 	return 0;
    223      1.3    dyoung }
    224      1.3    dyoung 
    225      1.3    dyoung void
    226      1.3    dyoung pcibchilddet(device_t self, device_t child)
    227      1.3    dyoung {
    228  1.3.4.3      yamt 	struct pcib_softc *sc = device_private(self);
    229  1.3.4.3      yamt 
    230  1.3.4.3      yamt 	if (sc->sc_isabus == child)
    231  1.3.4.3      yamt 		sc->sc_isabus = NULL;
    232      1.3    dyoung }
    233      1.3    dyoung 
    234  1.3.4.3      yamt /* XXX share this with sys/arch/i386/pci/elan520.c */
    235  1.3.4.3      yamt static bool
    236  1.3.4.3      yamt ifattr_match(const char *snull, const char *t)
    237      1.1   xtraeme {
    238  1.3.4.3      yamt 	return (snull == NULL) || strcmp(snull, t) == 0;
    239  1.3.4.3      yamt }
    240  1.3.4.3      yamt 
    241  1.3.4.3      yamt int
    242  1.3.4.3      yamt pcibrescan(device_t self, const char *ifattr, const int *loc)
    243  1.3.4.3      yamt {
    244  1.3.4.3      yamt 	struct pcib_softc *sc = device_private(self);
    245      1.1   xtraeme 	struct isabus_attach_args iba;
    246      1.1   xtraeme 
    247  1.3.4.3      yamt 	if (ifattr_match(ifattr, "isabus") && sc->sc_isabus == NULL) {
    248  1.3.4.3      yamt 		/*
    249  1.3.4.3      yamt 		 * Attach the ISA bus behind this bridge.
    250  1.3.4.3      yamt 		 */
    251  1.3.4.3      yamt 		memset(&iba, 0, sizeof(iba));
    252  1.3.4.3      yamt 		iba.iba_iot = X86_BUS_SPACE_IO;
    253  1.3.4.3      yamt 		iba.iba_memt = X86_BUS_SPACE_MEM;
    254      1.1   xtraeme #if NISA > 0
    255  1.3.4.3      yamt 		iba.iba_dmat = &isa_bus_dma_tag;
    256      1.1   xtraeme #endif
    257  1.3.4.3      yamt 		sc->sc_isabus =
    258  1.3.4.3      yamt 		    config_found_ia(self, "isabus", &iba, isabusprint);
    259  1.3.4.3      yamt 	}
    260  1.3.4.3      yamt 	return 0;
    261  1.3.4.3      yamt }
    262  1.3.4.3      yamt 
    263  1.3.4.3      yamt void
    264  1.3.4.3      yamt pcib_callback(device_t self)
    265  1.3.4.3      yamt {
    266  1.3.4.3      yamt 	pcibrescan(self, "isabus", NULL);
    267      1.1   xtraeme }
    268