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isapnp.c revision 1.31
      1  1.31  augustss /*	$NetBSD: isapnp.c,v 1.31 1999/01/10 10:23:24 augustss Exp $	*/
      2   1.1  christos 
      3  1.27  christos /*-
      4  1.27  christos  * Copyright (c) 1996 The NetBSD Foundation, Inc.
      5  1.27  christos  * All rights reserved.
      6  1.27  christos  *
      7  1.27  christos  * This code is derived from software contributed to The NetBSD Foundation
      8  1.27  christos  * by Christos Zoulas.
      9   1.1  christos  *
     10   1.1  christos  * Redistribution and use in source and binary forms, with or without
     11   1.1  christos  * modification, are permitted provided that the following conditions
     12   1.1  christos  * are met:
     13   1.1  christos  * 1. Redistributions of source code must retain the above copyright
     14   1.1  christos  *    notice, this list of conditions and the following disclaimer.
     15   1.1  christos  * 2. Redistributions in binary form must reproduce the above copyright
     16   1.1  christos  *    notice, this list of conditions and the following disclaimer in the
     17   1.1  christos  *    documentation and/or other materials provided with the distribution.
     18   1.1  christos  * 3. All advertising materials mentioning features or use of this software
     19   1.1  christos  *    must display the following acknowledgement:
     20  1.27  christos  *        This product includes software developed by the NetBSD
     21  1.27  christos  *        Foundation, Inc. and its contributors.
     22  1.27  christos  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  1.27  christos  *    contributors may be used to endorse or promote products derived
     24  1.27  christos  *    from this software without specific prior written permission.
     25   1.1  christos  *
     26  1.27  christos  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  1.27  christos  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  1.27  christos  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  1.27  christos  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  1.27  christos  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  1.27  christos  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  1.27  christos  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  1.27  christos  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  1.27  christos  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  1.27  christos  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  1.27  christos  * POSSIBILITY OF SUCH DAMAGE.
     37   1.1  christos  */
     38   1.1  christos 
     39   1.1  christos /*
     40   1.1  christos  * ISA PnP bus autoconfiguration.
     41   1.1  christos  */
     42   1.1  christos 
     43  1.28   thorpej #include "isadma.h"
     44  1.28   thorpej 
     45   1.1  christos #include <sys/param.h>
     46   1.1  christos #include <sys/systm.h>
     47   1.1  christos #include <sys/device.h>
     48   1.1  christos #include <sys/malloc.h>
     49   1.1  christos 
     50   1.1  christos #include <machine/bus.h>
     51   1.1  christos 
     52   1.1  christos #include <dev/isa/isavar.h>
     53   1.1  christos 
     54   1.1  christos #include <dev/isapnp/isapnpreg.h>
     55   1.1  christos #include <dev/isapnp/isapnpvar.h>
     56  1.20  christos #include <dev/isapnp/isapnpdevs.h>
     57   1.1  christos 
     58  1.31  augustss #include "wss_isapnp.h"		/* XXX part of disgusting CS chip hack */
     59  1.31  augustss 
     60   1.1  christos static void isapnp_init __P((struct isapnp_softc *));
     61   1.1  christos static __inline u_char isapnp_shift_bit __P((struct isapnp_softc *));
     62   1.1  christos static int isapnp_findcard __P((struct isapnp_softc *));
     63   1.1  christos static void isapnp_free_region __P((bus_space_tag_t, struct isapnp_region *));
     64   1.1  christos static int isapnp_alloc_region __P((bus_space_tag_t, struct isapnp_region *));
     65  1.11   thorpej static int isapnp_alloc_irq __P((isa_chipset_tag_t, struct isapnp_pin *));
     66  1.18   thorpej static int isapnp_alloc_drq __P((isa_chipset_tag_t, struct isapnp_pin *));
     67   1.1  christos static int isapnp_testconfig __P((bus_space_tag_t, bus_space_tag_t,
     68   1.1  christos     struct isapnp_attach_args *, int));
     69  1.18   thorpej static struct isapnp_attach_args *isapnp_bestconfig __P((struct isapnp_softc *,
     70  1.18   thorpej     struct isapnp_attach_args **));
     71   1.1  christos static void isapnp_print_region __P((const char *, struct isapnp_region *,
     72   1.1  christos     size_t));
     73   1.1  christos static void isapnp_configure __P((struct isapnp_softc *,
     74   1.1  christos     const struct isapnp_attach_args *));
     75   1.1  christos static void isapnp_print_pin __P((const char *, struct isapnp_pin *, size_t));
     76   1.1  christos static int isapnp_print __P((void *, const char *));
     77   1.7     mikel #ifdef _KERNEL
     78  1.13  drochner static int isapnp_submatch __P((struct device *, struct cfdata *, void *));
     79  1.13  drochner #endif
     80   1.9     mikel static int isapnp_find __P((struct isapnp_softc *, int));
     81   1.9     mikel static int isapnp_match __P((struct device *, struct cfdata *, void *));
     82   1.1  christos static void isapnp_attach __P((struct device *, struct device *, void *));
     83  1.22   thorpej static void isapnp_callback __P((struct device *));
     84   1.1  christos 
     85   1.1  christos struct cfattach isapnp_ca = {
     86   1.1  christos 	sizeof(struct isapnp_softc), isapnp_match, isapnp_attach
     87   1.1  christos };
     88   1.1  christos 
     89  1.23   thorpej /*
     90  1.23   thorpej  * This keeps track if which ISA's we have been probed on.
     91  1.23   thorpej  */
     92  1.23   thorpej struct isapnp_probe_cookie {
     93  1.23   thorpej 	LIST_ENTRY(isapnp_probe_cookie)	ipc_link;
     94  1.23   thorpej 	struct device *ipc_parent;
     95  1.23   thorpej };
     96  1.23   thorpej LIST_HEAD(, isapnp_probe_cookie) isapnp_probes =
     97  1.23   thorpej     LIST_HEAD_INITIALIZER(isapnp_probes);
     98  1.23   thorpej 
     99   1.1  christos /* isapnp_init():
    100   1.1  christos  *	Write the PNP initiation key to wake up the cards...
    101   1.1  christos  */
    102   1.1  christos static void
    103   1.1  christos isapnp_init(sc)
    104   1.1  christos 	struct isapnp_softc *sc;
    105   1.1  christos {
    106   1.1  christos 	int i;
    107   1.1  christos 	u_char v = ISAPNP_LFSR_INIT;
    108   1.1  christos 
    109   1.1  christos 	/* First write 0's twice to enter the Wait for Key state */
    110   1.1  christos 	ISAPNP_WRITE_ADDR(sc, 0);
    111   1.1  christos 	ISAPNP_WRITE_ADDR(sc, 0);
    112   1.1  christos 
    113   1.1  christos 	/* Send the 32 byte sequence to awake the logic */
    114   1.9     mikel 	for (i = 0; i < ISAPNP_LFSR_LENGTH; i++) {
    115   1.1  christos 		ISAPNP_WRITE_ADDR(sc, v);
    116   1.1  christos 		v = ISAPNP_LFSR_NEXT(v);
    117   1.1  christos 	}
    118   1.1  christos }
    119   1.1  christos 
    120   1.1  christos 
    121   1.1  christos /* isapnp_shift_bit():
    122   1.1  christos  *	Read a bit at a time from the config card.
    123   1.1  christos  */
    124   1.1  christos static __inline u_char
    125   1.1  christos isapnp_shift_bit(sc)
    126   1.1  christos 	struct isapnp_softc *sc;
    127   1.1  christos {
    128   1.1  christos 	u_char c1, c2;
    129   1.1  christos 
    130   1.1  christos 	DELAY(250);
    131   1.1  christos 	c1 = ISAPNP_READ_DATA(sc);
    132   1.1  christos 	DELAY(250);
    133   1.1  christos 	c2 = ISAPNP_READ_DATA(sc);
    134   1.1  christos 
    135   1.1  christos 	if (c1 == 0x55 && c2 == 0xAA)
    136   1.1  christos 		return 0x80;
    137   1.1  christos 	else
    138   1.1  christos 		return 0;
    139   1.1  christos }
    140   1.1  christos 
    141   1.1  christos 
    142   1.1  christos /* isapnp_findcard():
    143   1.1  christos  *	Attempt to read the vendor/serial/checksum for a card
    144   1.1  christos  *	If a card is found [the checksum matches], assign the
    145   1.1  christos  *	next card number to it and return 1
    146   1.1  christos  */
    147   1.1  christos static int
    148   1.1  christos isapnp_findcard(sc)
    149   1.1  christos 	struct isapnp_softc *sc;
    150   1.1  christos {
    151   1.4  christos 	u_char v = ISAPNP_LFSR_INIT, csum, w;
    152   1.1  christos 	int i, b;
    153   1.1  christos 
    154   1.1  christos 	if (sc->sc_ncards == ISAPNP_MAX_CARDS) {
    155   1.1  christos 		printf("%s: Too many pnp cards\n", sc->sc_dev.dv_xname);
    156   1.1  christos 		return 0;
    157   1.1  christos 	}
    158   1.1  christos 
    159   1.1  christos 	/* Set the read port */
    160   1.1  christos 	isapnp_write_reg(sc, ISAPNP_WAKE, 0);
    161   1.1  christos 	isapnp_write_reg(sc, ISAPNP_SET_RD_PORT, sc->sc_read_port >> 2);
    162   1.1  christos 	sc->sc_read_port |= 3;
    163   1.1  christos 	DELAY(1000);
    164   1.1  christos 
    165   1.1  christos 	ISAPNP_WRITE_ADDR(sc, ISAPNP_SERIAL_ISOLATION);
    166   1.1  christos 	DELAY(1000);
    167   1.1  christos 
    168   1.1  christos 	/* Read the 8 bytes of the Vendor ID and Serial Number */
    169   1.1  christos 	for(i = 0; i < 8; i++) {
    170   1.1  christos 		/* Read each bit separately */
    171   1.1  christos 		for (w = 0, b = 0; b < 8; b++) {
    172   1.1  christos 			u_char neg = isapnp_shift_bit(sc);
    173   1.1  christos 
    174   1.1  christos 			w >>= 1;
    175   1.1  christos 			w |= neg;
    176   1.1  christos 			v = ISAPNP_LFSR_NEXT(v) ^ neg;
    177   1.1  christos 		}
    178   1.1  christos 		sc->sc_id[sc->sc_ncards][i] = w;
    179   1.1  christos 	}
    180   1.1  christos 
    181   1.1  christos 	/* Read the remaining checksum byte */
    182   1.4  christos 	for (csum = 0, b = 0; b < 8; b++) {
    183   1.1  christos 		u_char neg = isapnp_shift_bit(sc);
    184   1.1  christos 
    185   1.1  christos 		csum >>= 1;
    186   1.1  christos 		csum |= neg;
    187   1.1  christos 	}
    188   1.4  christos 	sc->sc_id[sc->sc_ncards][8] = csum;
    189   1.1  christos 
    190   1.1  christos 	if (csum == v) {
    191   1.1  christos 		sc->sc_ncards++;
    192   1.1  christos 		isapnp_write_reg(sc, ISAPNP_CARD_SELECT_NUM, sc->sc_ncards);
    193   1.1  christos 		return 1;
    194   1.1  christos 	}
    195   1.1  christos 	return 0;
    196   1.1  christos }
    197   1.1  christos 
    198   1.1  christos 
    199   1.1  christos /* isapnp_free_region():
    200   1.1  christos  *	Free a region
    201   1.1  christos  */
    202   1.1  christos static void
    203   1.1  christos isapnp_free_region(t, r)
    204   1.1  christos 	bus_space_tag_t t;
    205   1.1  christos 	struct isapnp_region *r;
    206   1.1  christos {
    207   1.8     mikel #ifdef _KERNEL
    208   1.1  christos 	bus_space_unmap(t, r->h, r->length);
    209   1.8     mikel #endif
    210   1.1  christos }
    211   1.1  christos 
    212   1.1  christos 
    213   1.1  christos /* isapnp_alloc_region():
    214   1.1  christos  *	Allocate a single region if possible
    215   1.1  christos  */
    216   1.1  christos static int
    217   1.1  christos isapnp_alloc_region(t, r)
    218   1.1  christos 	bus_space_tag_t t;
    219   1.1  christos 	struct isapnp_region *r;
    220   1.1  christos {
    221   1.1  christos 	int error = 0;
    222   1.1  christos 
    223   1.8     mikel 	for (r->base = r->minbase; r->base <= r->maxbase;
    224   1.8     mikel 	     r->base += r->align) {
    225   1.8     mikel #ifdef _KERNEL
    226   1.1  christos 		error = bus_space_map(t, r->base, r->length, 0, &r->h);
    227   1.8     mikel #endif
    228   1.1  christos 		if (error == 0)
    229   1.1  christos 			return 0;
    230  1.30      fvdl 		if (r->align == 0)
    231  1.30      fvdl 			break;
    232   1.1  christos 	}
    233   1.1  christos 	return error;
    234   1.1  christos }
    235   1.1  christos 
    236   1.1  christos 
    237  1.10   thorpej /* isapnp_alloc_irq():
    238  1.10   thorpej  *	Allocate an irq
    239   1.1  christos  */
    240   1.1  christos static int
    241  1.11   thorpej isapnp_alloc_irq(ic, i)
    242  1.11   thorpej 	isa_chipset_tag_t ic;
    243   1.1  christos 	struct isapnp_pin *i;
    244   1.1  christos {
    245  1.11   thorpej 	int irq;
    246  1.12  christos #define LEVEL_IRQ (ISAPNP_IRQTYPE_LEVEL_PLUS|ISAPNP_IRQTYPE_LEVEL_MINUS)
    247  1.12  christos 	i->type = (i->flags & LEVEL_IRQ) ? IST_LEVEL : IST_EDGE;
    248   1.1  christos 
    249  1.10   thorpej 	if (i->bits == 0) {
    250   1.1  christos 		i->num = 0;
    251  1.10   thorpej 		return 0;
    252  1.10   thorpej 	}
    253  1.10   thorpej 
    254  1.12  christos 	if (isa_intr_alloc(ic, i->bits, i->type, &irq) == 0) {
    255  1.11   thorpej 		i->num = irq;
    256  1.11   thorpej 		return 0;
    257  1.11   thorpej 	}
    258  1.10   thorpej 
    259  1.10   thorpej 	return EINVAL;
    260   1.1  christos }
    261   1.1  christos 
    262  1.10   thorpej /* isapnp_alloc_drq():
    263  1.10   thorpej  *	Allocate a drq
    264  1.10   thorpej  */
    265  1.10   thorpej static int
    266  1.18   thorpej isapnp_alloc_drq(ic, i)
    267  1.18   thorpej 	isa_chipset_tag_t ic;
    268  1.10   thorpej 	struct isapnp_pin *i;
    269  1.10   thorpej {
    270  1.29   hannken #if NISADMA > 0
    271  1.10   thorpej 	int b;
    272  1.10   thorpej 
    273  1.10   thorpej 	if (i->bits == 0) {
    274  1.10   thorpej 		i->num = 0;
    275  1.10   thorpej 		return 0;
    276  1.10   thorpej 	}
    277  1.10   thorpej 
    278  1.17   thorpej 	for (b = 0; b < 8; b++)
    279  1.18   thorpej 		if ((i->bits & (1 << b)) && isa_drq_isfree(ic, b)) {
    280  1.10   thorpej 			i->num = b;
    281  1.10   thorpej 			return 0;
    282  1.10   thorpej 		}
    283  1.29   hannken #endif /* NISADMA > 0 */
    284  1.10   thorpej 
    285  1.10   thorpej 	return EINVAL;
    286  1.10   thorpej }
    287   1.1  christos 
    288   1.1  christos /* isapnp_testconfig():
    289   1.1  christos  *	Test/Allocate the regions used
    290   1.1  christos  */
    291   1.1  christos static int
    292   1.1  christos isapnp_testconfig(iot, memt, ipa, alloc)
    293   1.1  christos 	bus_space_tag_t iot, memt;
    294   1.1  christos 	struct isapnp_attach_args *ipa;
    295   1.1  christos 	int alloc;
    296   1.1  christos {
    297   1.1  christos 	int nio = 0, nmem = 0, nmem32 = 0, nirq = 0, ndrq = 0;
    298   1.1  christos 	int error = 0;
    299   1.1  christos 
    300   1.1  christos #ifdef DEBUG_ISAPNP
    301   1.1  christos 	isapnp_print_attach(ipa);
    302   1.1  christos #endif
    303   1.1  christos 
    304   1.1  christos 	for (; nio < ipa->ipa_nio; nio++) {
    305   1.1  christos 		error = isapnp_alloc_region(iot, &ipa->ipa_io[nio]);
    306   1.1  christos 		if (error)
    307   1.1  christos 			goto bad;
    308   1.1  christos 	}
    309   1.1  christos 
    310   1.1  christos 	for (; nmem < ipa->ipa_nmem; nmem++) {
    311   1.1  christos 		error = isapnp_alloc_region(memt, &ipa->ipa_mem[nmem]);
    312   1.1  christos 		if (error)
    313   1.1  christos 			goto bad;
    314   1.1  christos 	}
    315   1.1  christos 
    316   1.1  christos 	for (; nmem32 < ipa->ipa_nmem32; nmem32++) {
    317   1.1  christos 		error = isapnp_alloc_region(memt, &ipa->ipa_mem32[nmem32]);
    318   1.1  christos 		if (error)
    319   1.1  christos 			goto bad;
    320   1.1  christos 	}
    321   1.1  christos 
    322   1.1  christos 	for (; nirq < ipa->ipa_nirq; nirq++) {
    323  1.11   thorpej 		error = isapnp_alloc_irq(ipa->ipa_ic, &ipa->ipa_irq[nirq]);
    324   1.1  christos 		if (error)
    325   1.1  christos 			goto bad;
    326   1.1  christos 	}
    327   1.1  christos 
    328   1.1  christos 	for (; ndrq < ipa->ipa_ndrq; ndrq++) {
    329  1.18   thorpej 		error = isapnp_alloc_drq(ipa->ipa_ic, &ipa->ipa_drq[ndrq]);
    330   1.1  christos 		if (error)
    331   1.1  christos 			goto bad;
    332   1.1  christos 	}
    333   1.1  christos 
    334   1.1  christos 	if (alloc)
    335   1.1  christos 		return error;
    336   1.1  christos 
    337   1.1  christos bad:
    338   1.1  christos #ifdef notyet
    339   1.1  christos 	for (ndrq--; ndrq >= 0; ndrq--)
    340   1.1  christos 		isapnp_free_pin(&ipa->ipa_drq[ndrq]);
    341   1.1  christos 
    342   1.1  christos 	for (nirq--; nirq >= 0; nirq--)
    343   1.1  christos 		isapnp_free_pin(&ipa->ipa_irq[nirq]);
    344   1.1  christos #endif
    345   1.1  christos 
    346   1.1  christos 	for (nmem32--; nmem32 >= 0; nmem32--)
    347   1.1  christos 		isapnp_free_region(memt, &ipa->ipa_mem32[nmem32]);
    348   1.1  christos 
    349   1.1  christos 	for (nmem--; nmem >= 0; nmem--)
    350   1.1  christos 		isapnp_free_region(memt, &ipa->ipa_mem[nmem]);
    351   1.1  christos 
    352   1.1  christos 	for (nio--; nio >= 0; nio--)
    353   1.1  christos 		isapnp_free_region(iot, &ipa->ipa_io[nio]);
    354   1.1  christos 
    355   1.1  christos 	return error;
    356   1.1  christos }
    357   1.1  christos 
    358   1.1  christos 
    359   1.1  christos /* isapnp_config():
    360   1.1  christos  *	Test/Allocate the regions used
    361   1.1  christos  */
    362   1.1  christos int
    363   1.1  christos isapnp_config(iot, memt, ipa)
    364   1.1  christos 	bus_space_tag_t iot, memt;
    365   1.1  christos 	struct isapnp_attach_args *ipa;
    366   1.1  christos {
    367   1.1  christos 	return isapnp_testconfig(iot, memt, ipa, 1);
    368   1.1  christos }
    369   1.1  christos 
    370   1.1  christos 
    371   1.1  christos /* isapnp_unconfig():
    372   1.1  christos  *	Free the regions used
    373   1.1  christos  */
    374   1.1  christos void
    375   1.1  christos isapnp_unconfig(iot, memt, ipa)
    376   1.1  christos 	bus_space_tag_t iot, memt;
    377   1.1  christos 	struct isapnp_attach_args *ipa;
    378   1.1  christos {
    379   1.1  christos 	int i;
    380   1.1  christos 
    381   1.1  christos #ifdef notyet
    382   1.1  christos 	for (i = 0; i < ipa->ipa_ndrq; i++)
    383   1.1  christos 		isapnp_free_pin(&ipa->ipa_drq[i]);
    384   1.1  christos 
    385   1.1  christos 	for (i = 0; i < ipa->ipa_nirq; i++)
    386   1.1  christos 		isapnp_free_pin(&ipa->ipa_irq[i]);
    387   1.1  christos #endif
    388   1.1  christos 
    389   1.1  christos 	for (i = 0; i < ipa->ipa_nmem32; i++)
    390   1.1  christos 		isapnp_free_region(memt, &ipa->ipa_mem32[i]);
    391   1.1  christos 
    392   1.1  christos 	for (i = 0; i < ipa->ipa_nmem; i++)
    393   1.1  christos 		isapnp_free_region(memt, &ipa->ipa_mem[i]);
    394   1.1  christos 
    395   1.1  christos 	for (i = 0; i < ipa->ipa_nio; i++)
    396   1.1  christos 		isapnp_free_region(iot, &ipa->ipa_io[i]);
    397   1.1  christos }
    398   1.1  christos 
    399   1.1  christos 
    400   1.1  christos /* isapnp_bestconfig():
    401   1.1  christos  *	Return the best configuration for each logical device, remove and
    402   1.1  christos  *	free all other configurations.
    403   1.1  christos  */
    404   1.1  christos static struct isapnp_attach_args *
    405  1.18   thorpej isapnp_bestconfig(sc, ipa)
    406   1.1  christos 	struct isapnp_softc *sc;
    407   1.1  christos 	struct isapnp_attach_args **ipa;
    408   1.1  christos {
    409   1.1  christos 	struct isapnp_attach_args *c, *best, *f = *ipa;
    410   1.1  christos 	int error;
    411   1.1  christos 
    412   1.1  christos 	for (;;) {
    413   1.1  christos 		if (f == NULL)
    414   1.1  christos 			return NULL;
    415   1.1  christos 
    416   1.1  christos #define SAMEDEV(a, b) (strcmp((a)->ipa_devlogic, (b)->ipa_devlogic) == 0)
    417   1.1  christos 
    418   1.1  christos 		/* Find the best config */
    419   1.2  christos 		for (best = c = f; c != NULL; c = c->ipa_sibling) {
    420   1.1  christos 			if (!SAMEDEV(c, f))
    421   1.1  christos 				continue;
    422   1.1  christos 			if (c->ipa_pref < best->ipa_pref)
    423   1.1  christos 				best = c;
    424   1.1  christos 		}
    425   1.1  christos 
    426  1.18   thorpej 		/*
    427  1.18   thorpej 		 * Make sure the ISA chipset is initialized!  We need
    428  1.18   thorpej 		 * it to test the best config!
    429  1.18   thorpej 		 */
    430  1.18   thorpej 		best->ipa_ic = sc->sc_ic;
    431  1.18   thorpej 
    432   1.1  christos 		/* Test the best config */
    433   1.1  christos 		error = isapnp_testconfig(sc->sc_iot, sc->sc_memt, best, 0);
    434   1.1  christos 
    435   1.1  christos 		/* Remove this config from the list */
    436   1.1  christos 		if (best == f)
    437   1.2  christos 			f = f->ipa_sibling;
    438   1.1  christos 		else {
    439   1.2  christos 			for (c = f; c->ipa_sibling != best; c = c->ipa_sibling)
    440   1.1  christos 				continue;
    441   1.2  christos 			c->ipa_sibling = best->ipa_sibling;
    442   1.1  christos 		}
    443   1.1  christos 
    444   1.1  christos 		if (error) {
    445   1.1  christos 			best->ipa_pref = ISAPNP_DEP_CONFLICTING;
    446   1.1  christos 
    447   1.2  christos 			for (c = f; c != NULL; c = c->ipa_sibling)
    448   1.1  christos 				if (c != best && SAMEDEV(c, best))
    449   1.1  christos 					break;
    450   1.1  christos 			/* Last config for this logical device is conflicting */
    451   1.1  christos 			if (c == NULL) {
    452   1.1  christos 				*ipa = f;
    453   1.1  christos 				return best;
    454   1.1  christos 			}
    455   1.1  christos 
    456   1.1  christos 			ISAPNP_FREE(best);
    457   1.1  christos 			continue;
    458   1.1  christos 		}
    459   1.1  christos 		else {
    460   1.1  christos 			/* Remove all other configs for this device */
    461   1.1  christos 			struct isapnp_attach_args *l = NULL, *n = NULL, *d;
    462   1.1  christos 
    463   1.1  christos 			for (c = f; c; ) {
    464   1.1  christos 				if (c == best)
    465   1.1  christos 					continue;
    466   1.2  christos 				d = c->ipa_sibling;
    467   1.1  christos 				if (SAMEDEV(c, best))
    468   1.1  christos 					ISAPNP_FREE(c);
    469   1.1  christos 				else {
    470   1.1  christos 					if (n)
    471   1.2  christos 						n->ipa_sibling = c;
    472   1.1  christos 
    473   1.1  christos 					else
    474   1.1  christos 						l = c;
    475   1.1  christos 					n = c;
    476   1.2  christos 					c->ipa_sibling = NULL;
    477   1.1  christos 				}
    478   1.1  christos 				c = d;
    479   1.1  christos 			}
    480   1.1  christos 			f = l;
    481   1.1  christos 		}
    482   1.1  christos 		*ipa = f;
    483   1.1  christos 		return best;
    484   1.1  christos 	}
    485   1.1  christos }
    486   1.1  christos 
    487   1.1  christos 
    488   1.1  christos /* isapnp_id_to_vendor():
    489   1.1  christos  *	Convert a pnp ``compressed ascii'' vendor id to a string
    490   1.1  christos  */
    491   1.1  christos char *
    492   1.1  christos isapnp_id_to_vendor(v, id)
    493   1.1  christos 	char   *v;
    494   1.1  christos 	const u_char *id;
    495   1.1  christos {
    496   1.1  christos 	static const char hex[] = "0123456789ABCDEF";
    497   1.1  christos 	char *p = v;
    498   1.1  christos 
    499   1.1  christos 	*p++ = 'A' + (id[0] >> 2) - 1;
    500   1.1  christos 	*p++ = 'A' + ((id[0] & 3) << 3) + (id[1] >> 5) - 1;
    501   1.1  christos 	*p++ = 'A' + (id[1] & 0x1f) - 1;
    502   1.1  christos 	*p++ = hex[id[2] >> 4];
    503   1.1  christos 	*p++ = hex[id[2] & 0x0f];
    504   1.1  christos 	*p++ = hex[id[3] >> 4];
    505   1.1  christos 	*p++ = hex[id[3] & 0x0f];
    506   1.1  christos 	*p = '\0';
    507   1.1  christos 
    508   1.1  christos 	return v;
    509   1.1  christos }
    510   1.1  christos 
    511   1.1  christos 
    512   1.1  christos /* isapnp_print_region():
    513   1.1  christos  *	Print a region allocation
    514   1.1  christos  */
    515   1.1  christos static void
    516   1.1  christos isapnp_print_region(str, r, n)
    517   1.1  christos 	const char *str;
    518   1.1  christos 	struct isapnp_region *r;
    519   1.1  christos 	size_t n;
    520   1.1  christos {
    521   1.1  christos 	size_t i;
    522   1.1  christos 
    523   1.1  christos 	if (n == 0)
    524   1.1  christos 		return;
    525   1.1  christos 
    526   1.1  christos 	printf(" %s ", str);
    527   1.1  christos 	for (i = 0; i < n; i++, r++) {
    528   1.1  christos 		printf("0x%x", r->base);
    529   1.1  christos 		if (r->length)
    530   1.1  christos 			printf("/%d", r->length);
    531   1.1  christos 		if (i != n - 1)
    532   1.1  christos 			printf(",");
    533   1.1  christos 	}
    534   1.1  christos }
    535   1.1  christos 
    536   1.1  christos 
    537   1.1  christos /* isapnp_print_pin():
    538   1.1  christos  *	Print an irq/drq assignment
    539   1.1  christos  */
    540   1.1  christos static void
    541   1.1  christos isapnp_print_pin(str, p, n)
    542   1.1  christos 	const char *str;
    543   1.1  christos 	struct isapnp_pin *p;
    544   1.1  christos 	size_t n;
    545   1.1  christos {
    546   1.1  christos 	size_t i;
    547   1.1  christos 
    548   1.1  christos 	if (n == 0)
    549   1.1  christos 		return;
    550   1.1  christos 
    551   1.1  christos 	printf(" %s ", str);
    552   1.1  christos 	for (i = 0; i < n; i++, p++) {
    553   1.1  christos 		printf("%d", p->num);
    554   1.1  christos 		if (i != n - 1)
    555   1.1  christos 			printf(",");
    556   1.1  christos 	}
    557   1.1  christos }
    558   1.1  christos 
    559   1.1  christos 
    560   1.1  christos /* isapnp_print():
    561   1.1  christos  *	Print the configuration line for an ISA PnP card.
    562   1.1  christos  */
    563   1.1  christos static int
    564   1.1  christos isapnp_print(aux, str)
    565   1.1  christos 	void *aux;
    566   1.1  christos 	const char *str;
    567   1.1  christos {
    568   1.1  christos 	struct isapnp_attach_args *ipa = aux;
    569   1.1  christos 
    570   1.1  christos 	if (str != NULL)
    571   1.7     mikel 		printf("%s: <%s, %s, %s, %s>",
    572   1.1  christos 		    str, ipa->ipa_devident, ipa->ipa_devlogic,
    573   1.7     mikel 		    ipa->ipa_devcompat, ipa->ipa_devclass);
    574   1.1  christos 
    575   1.1  christos 	isapnp_print_region("port", ipa->ipa_io, ipa->ipa_nio);
    576   1.1  christos 	isapnp_print_region("mem", ipa->ipa_mem, ipa->ipa_nmem);
    577   1.1  christos 	isapnp_print_region("mem32", ipa->ipa_mem32, ipa->ipa_nmem32);
    578   1.1  christos 	isapnp_print_pin("irq", ipa->ipa_irq, ipa->ipa_nirq);
    579   1.1  christos 	isapnp_print_pin("drq", ipa->ipa_drq, ipa->ipa_ndrq);
    580   1.1  christos 
    581   1.1  christos 	return UNCONF;
    582   1.1  christos }
    583   1.1  christos 
    584   1.1  christos 
    585   1.7     mikel #ifdef _KERNEL
    586   1.1  christos /* isapnp_submatch():
    587   1.9     mikel  *	Probe the logical device...
    588   1.1  christos  */
    589   1.1  christos static int
    590   1.1  christos isapnp_submatch(parent, match, aux)
    591   1.1  christos 	struct device *parent;
    592  1.13  drochner 	struct cfdata *match;
    593  1.13  drochner 	void *aux;
    594   1.1  christos {
    595  1.14    mjacob 	struct cfdata *cf = (struct cfdata *) match;
    596   1.1  christos 	return ((*cf->cf_attach->ca_match)(parent, match, aux));
    597   1.1  christos }
    598  1.20  christos 
    599  1.21  christos 
    600  1.20  christos /* isapnp_devmatch():
    601  1.20  christos  *	Match a probed device with the information from the driver
    602  1.20  christos  */
    603  1.20  christos int
    604  1.20  christos isapnp_devmatch(ipa, dinfo)
    605  1.20  christos 	const struct isapnp_attach_args *ipa;
    606  1.20  christos 	const struct isapnp_devinfo *dinfo;
    607  1.20  christos {
    608  1.20  christos 	const char *const *name;
    609  1.20  christos 
    610  1.20  christos 	for (name = dinfo->devlogic; *name; name++)
    611  1.20  christos 		if (strcmp(*name, ipa->ipa_devlogic) == 0)
    612  1.20  christos 			return 1;
    613  1.20  christos 
    614  1.20  christos 	for (name = dinfo->devcompat; *name; name++)
    615  1.20  christos 		if (strcmp(*name, ipa->ipa_devcompat) == 0)
    616  1.20  christos 			return 1;
    617  1.20  christos 
    618  1.20  christos 	return 0;
    619  1.21  christos }
    620  1.21  christos 
    621  1.21  christos 
    622  1.21  christos /* isapnp_isa_attach_hook():
    623  1.21  christos  *	This routine is called from the isa attach code and
    624  1.21  christos  *	is a kludge; we are resetting all the cards here in order
    625  1.21  christos  *	to undo any card configuration that the bios did for us, in order
    626  1.21  christos  *	to avoid having the PnP devices match an isa probe. The correct
    627  1.21  christos  *	way of doing this is to read the PnP BIOS and find the card settings
    628  1.21  christos  *	from there. Unfortunately it is not as easy as it sounds.
    629  1.21  christos  */
    630  1.21  christos void
    631  1.21  christos isapnp_isa_attach_hook(isa_sc)
    632  1.21  christos 	struct isa_softc *isa_sc;
    633  1.21  christos {
    634  1.21  christos 	struct isapnp_softc sc;
    635  1.21  christos 
    636  1.21  christos 	sc.sc_iot = isa_sc->sc_iot;
    637  1.21  christos 	sc.sc_ncards = 0;
    638  1.21  christos 
    639  1.21  christos 	if (isapnp_map(&sc))
    640  1.21  christos 		return;
    641  1.31  augustss 
    642  1.31  augustss #if NWSS_ISAPNP > 0
    643  1.31  augustss 	/*
    644  1.31  augustss 	 * XXX XXX
    645  1.31  augustss 	 * This a totally disgusting hack, but I can't figure out another way.
    646  1.31  augustss 	 * It seems that many CS audio chips have a bug (as far as I can
    647  1.31  augustss 	 * understand).  The reset below does not really reset the chip, it
    648  1.31  augustss 	 * remains in a catatonic state and will not respond when probed.
    649  1.31  augustss 	 * The chip can be used both as a WSS and as a SB device, and a
    650  1.31  augustss 	 * single read at the WSS address (0x534) takes it out of this
    651  1.31  augustss 	 * non-responsive state.
    652  1.31  augustss 	 * The read has to happen at this point in time (or earlier) so
    653  1.31  augustss 	 * it cannot be moved to the wss_isapnp.c driver.
    654  1.31  augustss 	 * (BTW, We're not alone in having problems with these chips:
    655  1.31  augustss 	 * Windoze 98 couldn't detect the sound chip on a Dell when I tried.)
    656  1.31  augustss 	 *
    657  1.31  augustss 	 *     Lennart Augustsson <augustss (at) netbsd.org>
    658  1.31  augustss 	 *
    659  1.31  augustss 	 * (Implementation from John Kohl <jtk (at) kolvir.arlington.ma.us>)
    660  1.31  augustss 	 */
    661  1.31  augustss 	{
    662  1.31  augustss 		bus_space_handle_t ioh;
    663  1.31  augustss 		int rv;
    664  1.31  augustss 		if ((rv = bus_space_map(sc.sc_iot, 0x534, 1, 0, &ioh)) == 0) {
    665  1.31  augustss 			DPRINTF(("wss probe kludge\n"));
    666  1.31  augustss 			(void)bus_space_read_1(sc.sc_iot, ioh, 0);
    667  1.31  augustss 			bus_space_unmap(sc.sc_iot, ioh, 1);
    668  1.31  augustss 		} else {
    669  1.31  augustss 			DPRINTF(("wss probe kludge failed to map: %d\n", rv));
    670  1.31  augustss 		}
    671  1.31  augustss 	}
    672  1.31  augustss #endif
    673  1.21  christos 
    674  1.21  christos 	isapnp_init(&sc);
    675  1.21  christos 
    676  1.21  christos 	isapnp_write_reg(&sc, ISAPNP_CONFIG_CONTROL, ISAPNP_CC_RESET_DRV);
    677  1.21  christos 	DELAY(2000);
    678  1.21  christos 
    679  1.21  christos 	isapnp_unmap(&sc);
    680  1.20  christos }
    681   1.7     mikel #endif
    682   1.1  christos 
    683   1.1  christos 
    684   1.1  christos /* isapnp_find():
    685   1.1  christos  *	Probe and add cards
    686   1.1  christos  */
    687   1.1  christos static int
    688   1.9     mikel isapnp_find(sc, all)
    689   1.1  christos 	struct isapnp_softc *sc;
    690   1.9     mikel 	int all;
    691   1.1  christos {
    692   1.1  christos 	int p;
    693   1.1  christos 
    694   1.1  christos 	isapnp_init(sc);
    695   1.1  christos 
    696   1.1  christos 	isapnp_write_reg(sc, ISAPNP_CONFIG_CONTROL, ISAPNP_CC_RESET_DRV);
    697   1.1  christos 	DELAY(2000);
    698   1.1  christos 
    699   1.1  christos 	isapnp_init(sc);
    700   1.1  christos 	DELAY(2000);
    701   1.1  christos 
    702   1.1  christos 	for (p = ISAPNP_RDDATA_MIN; p <= ISAPNP_RDDATA_MAX; p += 4) {
    703   1.1  christos 		sc->sc_read_port = p;
    704   1.1  christos 		if (isapnp_map_readport(sc))
    705   1.1  christos 			continue;
    706  1.20  christos 		DPRINTF(("%s: Trying port %x\r", sc->sc_dev.dv_xname, p));
    707   1.1  christos 		if (isapnp_findcard(sc))
    708   1.1  christos 			break;
    709   1.1  christos 		isapnp_unmap_readport(sc);
    710   1.1  christos 	}
    711   1.1  christos 
    712   1.1  christos 	if (p > ISAPNP_RDDATA_MAX) {
    713   1.1  christos 		sc->sc_read_port = 0;
    714   1.1  christos 		return 0;
    715   1.1  christos 	}
    716   1.1  christos 
    717   1.9     mikel 	if (all)
    718   1.9     mikel 		while (isapnp_findcard(sc))
    719   1.9     mikel 			continue;
    720   1.1  christos 
    721   1.1  christos 	return 1;
    722   1.1  christos }
    723   1.1  christos 
    724   1.1  christos 
    725   1.1  christos /* isapnp_configure():
    726   1.1  christos  *	Configure a PnP card
    727   1.1  christos  *	XXX: The memory configuration code is wrong. We need to check the
    728   1.1  christos  *	     range/length bit an do appropriate sets.
    729   1.1  christos  */
    730   1.1  christos static void
    731   1.1  christos isapnp_configure(sc, ipa)
    732   1.1  christos 	struct isapnp_softc *sc;
    733   1.1  christos 	const struct isapnp_attach_args *ipa;
    734   1.1  christos {
    735   1.1  christos 	int i;
    736   1.1  christos 	static u_char isapnp_mem_range[] = ISAPNP_MEM_DESC;
    737   1.1  christos 	static u_char isapnp_io_range[] = ISAPNP_IO_DESC;
    738   1.1  christos 	static u_char isapnp_irq_range[] = ISAPNP_IRQ_DESC;
    739   1.1  christos 	static u_char isapnp_drq_range[] = ISAPNP_DRQ_DESC;
    740   1.1  christos 	static u_char isapnp_mem32_range[] = ISAPNP_MEM32_DESC;
    741   1.1  christos 	const struct isapnp_region *r;
    742   1.1  christos 	const struct isapnp_pin *p;
    743   1.1  christos 	struct isapnp_region rz;
    744   1.1  christos 	struct isapnp_pin pz;
    745   1.1  christos 
    746   1.1  christos 	memset(&pz, 0, sizeof(pz));
    747   1.1  christos 	memset(&rz, 0, sizeof(rz));
    748   1.1  christos 
    749   1.1  christos #define B0(a) ((a) & 0xff)
    750   1.1  christos #define B1(a) (((a) >> 8) & 0xff)
    751   1.1  christos #define B2(a) (((a) >> 16) & 0xff)
    752   1.1  christos #define B3(a) (((a) >> 24) & 0xff)
    753   1.1  christos 
    754   1.1  christos 	for (i = 0; i < sizeof(isapnp_io_range); i++) {
    755   1.1  christos 		if (i < ipa->ipa_nio)
    756   1.1  christos 			r = &ipa->ipa_io[i];
    757   1.1  christos 		else
    758   1.1  christos 			r = &rz;
    759   1.1  christos 
    760   1.1  christos 		isapnp_write_reg(sc,
    761   1.1  christos 		    isapnp_io_range[i] + ISAPNP_IO_BASE_15_8, B1(r->base));
    762   1.1  christos 		isapnp_write_reg(sc,
    763   1.1  christos 		    isapnp_io_range[i] + ISAPNP_IO_BASE_7_0, B0(r->base));
    764   1.1  christos 	}
    765   1.1  christos 
    766   1.1  christos 	for (i = 0; i < sizeof(isapnp_mem_range); i++) {
    767   1.1  christos 		if (i < ipa->ipa_nmem)
    768   1.1  christos 			r = &ipa->ipa_mem[i];
    769   1.1  christos 		else
    770   1.1  christos 			r = &rz;
    771   1.1  christos 
    772   1.1  christos 		isapnp_write_reg(sc,
    773   1.1  christos 		    isapnp_mem_range[i] + ISAPNP_MEM_BASE_23_16, B2(r->base));
    774   1.1  christos 		isapnp_write_reg(sc,
    775   1.1  christos 		    isapnp_mem_range[i] + ISAPNP_MEM_BASE_15_8, B1(r->base));
    776   1.1  christos 
    777   1.1  christos 		isapnp_write_reg(sc,
    778   1.1  christos 		    isapnp_mem_range[i] + ISAPNP_MEM_LRANGE_23_16,
    779   1.1  christos 		    B2(r->length));
    780   1.1  christos 		isapnp_write_reg(sc,
    781   1.1  christos 		    isapnp_mem_range[i] + ISAPNP_MEM_LRANGE_15_8,
    782   1.1  christos 		    B1(r->length));
    783   1.1  christos 	}
    784   1.1  christos 
    785   1.1  christos 	for (i = 0; i < sizeof(isapnp_irq_range); i++) {
    786   1.1  christos 		u_char v;
    787   1.1  christos 
    788   1.1  christos 		if (i < ipa->ipa_nirq)
    789   1.1  christos 			p = &ipa->ipa_irq[i];
    790   1.1  christos 		else
    791   1.1  christos 			p = &pz;
    792   1.1  christos 
    793   1.1  christos 		isapnp_write_reg(sc,
    794   1.1  christos 		    isapnp_irq_range[i] + ISAPNP_IRQ_NUMBER, p->num);
    795   1.1  christos 
    796   1.1  christos 		switch (p->flags) {
    797   1.1  christos 		case ISAPNP_IRQTYPE_LEVEL_PLUS:
    798   1.1  christos 			v = ISAPNP_IRQ_LEVEL|ISAPNP_IRQ_HIGH;
    799   1.1  christos 			break;
    800   1.1  christos 
    801   1.1  christos 		case ISAPNP_IRQTYPE_EDGE_PLUS:
    802   1.1  christos 			v = ISAPNP_IRQ_HIGH;
    803   1.1  christos 			break;
    804   1.1  christos 
    805   1.1  christos 		case ISAPNP_IRQTYPE_LEVEL_MINUS:
    806   1.1  christos 			v = ISAPNP_IRQ_LEVEL;
    807   1.1  christos 			break;
    808   1.1  christos 
    809   1.1  christos 		default:
    810   1.1  christos 		case ISAPNP_IRQTYPE_EDGE_MINUS:
    811   1.1  christos 			v = 0;
    812   1.1  christos 			break;
    813   1.1  christos 		}
    814   1.1  christos 		isapnp_write_reg(sc,
    815   1.1  christos 		    isapnp_irq_range[i] + ISAPNP_IRQ_CONTROL, v);
    816   1.1  christos 	}
    817   1.1  christos 
    818   1.1  christos 	for (i = 0; i < sizeof(isapnp_drq_range); i++) {
    819   1.1  christos 		u_char v;
    820   1.1  christos 
    821   1.1  christos 		if (i < ipa->ipa_ndrq)
    822   1.1  christos 			v = ipa->ipa_drq[i].num;
    823   1.1  christos 		else
    824   1.1  christos 			v = 4;
    825   1.1  christos 
    826   1.1  christos 		isapnp_write_reg(sc, isapnp_drq_range[i], v);
    827   1.1  christos 	}
    828   1.1  christos 
    829   1.1  christos 	for (i = 0; i < sizeof(isapnp_mem32_range); i++) {
    830   1.1  christos 		if (i < ipa->ipa_nmem32)
    831   1.1  christos 			r = &ipa->ipa_mem32[i];
    832   1.1  christos 		else
    833   1.1  christos 			r = &rz;
    834   1.1  christos 
    835   1.1  christos 		isapnp_write_reg(sc,
    836   1.1  christos 		    isapnp_mem32_range[i] + ISAPNP_MEM32_BASE_31_24,
    837   1.1  christos 		    B3(r->base));
    838   1.1  christos 		isapnp_write_reg(sc,
    839   1.1  christos 		    isapnp_mem32_range[i] + ISAPNP_MEM32_BASE_23_16,
    840   1.1  christos 		    B2(r->base));
    841   1.1  christos 		isapnp_write_reg(sc,
    842   1.1  christos 		    isapnp_mem32_range[i] + ISAPNP_MEM32_BASE_15_8,
    843   1.1  christos 		    B1(r->base));
    844   1.1  christos 		isapnp_write_reg(sc,
    845   1.1  christos 		    isapnp_mem32_range[i] + ISAPNP_MEM32_BASE_7_0,
    846   1.1  christos 		    B0(r->base));
    847   1.1  christos 
    848   1.1  christos 		isapnp_write_reg(sc,
    849   1.1  christos 		    isapnp_mem32_range[i] + ISAPNP_MEM32_LRANGE_31_24,
    850   1.1  christos 		    B3(r->length));
    851   1.1  christos 		isapnp_write_reg(sc,
    852   1.1  christos 		    isapnp_mem32_range[i] + ISAPNP_MEM32_LRANGE_23_16,
    853   1.1  christos 		    B2(r->length));
    854   1.1  christos 		isapnp_write_reg(sc,
    855   1.1  christos 		    isapnp_mem32_range[i] + ISAPNP_MEM32_LRANGE_15_8,
    856   1.1  christos 		    B1(r->length));
    857   1.1  christos 		isapnp_write_reg(sc,
    858   1.1  christos 		    isapnp_mem32_range[i] + ISAPNP_MEM32_LRANGE_7_0,
    859   1.1  christos 		    B0(r->length));
    860   1.1  christos 	}
    861   1.1  christos }
    862   1.1  christos 
    863   1.1  christos 
    864   1.1  christos /* isapnp_match():
    865   1.1  christos  *	Probe routine
    866   1.1  christos  */
    867   1.1  christos static int
    868   1.1  christos isapnp_match(parent, match, aux)
    869   1.1  christos 	struct device *parent;
    870   1.9     mikel 	struct cfdata *match;
    871   1.9     mikel 	void *aux;
    872   1.1  christos {
    873   1.1  christos 	struct isapnp_softc sc;
    874   1.1  christos 	struct isa_attach_args *ia = aux;
    875  1.23   thorpej 	struct isapnp_probe_cookie *ipc;
    876  1.23   thorpej 
    877  1.23   thorpej 	/*
    878  1.23   thorpej 	 * Ensure we only probe ISA PnP once; we don't actually consume
    879  1.23   thorpej 	 * bus resources, so we have to prevent being cloned forever.
    880  1.23   thorpej 	 */
    881  1.23   thorpej 	for (ipc = LIST_FIRST(&isapnp_probes); ipc != NULL;
    882  1.23   thorpej 	     ipc = LIST_NEXT(ipc, ipc_link))
    883  1.23   thorpej 		if (ipc->ipc_parent == parent)
    884  1.23   thorpej 			return (0);
    885  1.23   thorpej 
    886  1.23   thorpej 	ipc = malloc(sizeof(*ipc), M_DEVBUF, M_NOWAIT);
    887  1.23   thorpej 	if (ipc == NULL)
    888  1.23   thorpej 		panic("isapnp_match: can't allocate probe cookie");
    889  1.23   thorpej 
    890  1.23   thorpej 	ipc->ipc_parent = parent;
    891  1.23   thorpej 	LIST_INSERT_HEAD(&isapnp_probes, ipc, ipc_link);
    892   1.1  christos 
    893   1.1  christos 	sc.sc_iot = ia->ia_iot;
    894   1.1  christos 	(void) strcpy(sc.sc_dev.dv_xname, "(isapnp probe)");
    895   1.1  christos 
    896   1.1  christos 	if (isapnp_map(&sc))
    897   1.1  christos 		return 0;
    898   1.1  christos 
    899  1.22   thorpej 	isapnp_unmap(&sc);
    900  1.22   thorpej 
    901  1.22   thorpej 	/*
    902  1.22   thorpej 	 * We always match.  We must let all legacy ISA devices map
    903  1.22   thorpej 	 * their address spaces before we look for a read port.
    904  1.22   thorpej 	 */
    905   1.9     mikel 	ia->ia_iobase = ISAPNP_ADDR;
    906   1.9     mikel 	ia->ia_iosize = 1;
    907   1.1  christos 
    908  1.22   thorpej 	return (1);
    909   1.1  christos }
    910   1.1  christos 
    911   1.1  christos 
    912   1.1  christos /* isapnp_attach
    913  1.22   thorpej  *	Attach the PnP `bus'.
    914   1.1  christos  */
    915   1.1  christos static void
    916   1.1  christos isapnp_attach(parent, self, aux)
    917   1.1  christos 	struct device *parent, *self;
    918   1.1  christos 	void *aux;
    919   1.1  christos {
    920   1.1  christos 	struct isapnp_softc *sc = (struct isapnp_softc *) self;
    921   1.1  christos 	struct isa_attach_args *ia = aux;
    922   1.1  christos 
    923   1.1  christos 	sc->sc_iot = ia->ia_iot;
    924   1.1  christos 	sc->sc_memt = ia->ia_memt;
    925  1.18   thorpej 	sc->sc_ic = ia->ia_ic;
    926  1.22   thorpej 	sc->sc_dmat = ia->ia_dmat;
    927   1.1  christos 	sc->sc_ncards = 0;
    928   1.1  christos 
    929  1.22   thorpej 	printf(": ISA Plug 'n Play device support\n");
    930   1.1  christos 
    931  1.22   thorpej 	if (isapnp_map(sc)) {
    932  1.22   thorpej 		printf("%s: unable to map PnP register\n",
    933  1.22   thorpej 		    sc->sc_dev.dv_xname);
    934  1.22   thorpej 		return;
    935  1.22   thorpej 	}
    936   1.1  christos 
    937  1.22   thorpej #ifdef _KERNEL
    938  1.22   thorpej 	/*
    939  1.22   thorpej 	 * Defer configuration until the rest of the ISA devices have
    940  1.22   thorpej 	 * attached themselves.
    941  1.22   thorpej 	 */
    942  1.22   thorpej 	config_defer(self, isapnp_callback);
    943  1.22   thorpej #else
    944  1.22   thorpej 	isapnp_callback(self);
    945  1.22   thorpej #endif
    946  1.22   thorpej }
    947   1.1  christos 
    948  1.22   thorpej /* isapnp_callback
    949  1.22   thorpej  *	Find and attach PnP cards.
    950  1.22   thorpej  */
    951  1.22   thorpej void
    952  1.22   thorpej isapnp_callback(self)
    953  1.22   thorpej 	struct device *self;
    954  1.22   thorpej {
    955  1.22   thorpej 	struct isapnp_softc *sc = (struct isapnp_softc *)self;
    956  1.22   thorpej 	struct isapnp_attach_args *ipa, *lpa;
    957  1.25   thorpej 	int c, d;
    958  1.22   thorpej 
    959  1.22   thorpej 	/*
    960  1.22   thorpej 	 * Look for cards.  If none are found, we say so and just return.
    961  1.22   thorpej 	 */
    962  1.24   thorpej 	if (isapnp_find(sc, 1) == 0) {
    963  1.26   thorpej 		printf("%s: no ISA Plug 'n Play devices found\n",
    964  1.24   thorpej 		    sc->sc_dev.dv_xname);
    965  1.24   thorpej 		return;
    966  1.24   thorpej 	}
    967  1.22   thorpej 
    968  1.22   thorpej 	printf("%s: read port 0x%x\n", sc->sc_dev.dv_xname, sc->sc_read_port);
    969  1.22   thorpej 
    970  1.22   thorpej 	/*
    971  1.22   thorpej 	 * Now configure all of the cards.
    972  1.22   thorpej 	 */
    973   1.1  christos 	for (c = 0; c < sc->sc_ncards; c++) {
    974   1.1  christos 		/* Good morning card c */
    975   1.1  christos 		isapnp_write_reg(sc, ISAPNP_WAKE, c + 1);
    976   1.1  christos 
    977   1.1  christos 		if ((ipa = isapnp_get_resource(sc, c)) == NULL)
    978   1.1  christos 			continue;
    979   1.1  christos 
    980   1.1  christos 		DPRINTF(("Selecting attachments\n"));
    981  1.10   thorpej 		for (d = 0;
    982  1.18   thorpej 		    (lpa = isapnp_bestconfig(sc, &ipa)) != NULL; d++) {
    983   1.1  christos 			isapnp_write_reg(sc, ISAPNP_LOGICAL_DEV_NUM, d);
    984   1.1  christos 			isapnp_configure(sc, lpa);
    985   1.1  christos #ifdef DEBUG_ISAPNP
    986   1.1  christos 			{
    987   1.1  christos 				struct isapnp_attach_args pa;
    988   1.7     mikel 
    989   1.1  christos 				isapnp_get_config(sc, &pa);
    990   1.1  christos 				isapnp_print_config(&pa);
    991   1.1  christos 			}
    992   1.1  christos #endif
    993   1.1  christos 
    994  1.12  christos 			DPRINTF(("%s: configuring <%s, %s, %s, %s>\n",
    995   1.1  christos 			    sc->sc_dev.dv_xname,
    996   1.1  christos 			    lpa->ipa_devident, lpa->ipa_devlogic,
    997  1.12  christos 			    lpa->ipa_devcompat, lpa->ipa_devclass));
    998   1.1  christos 			if (lpa->ipa_pref == ISAPNP_DEP_CONFLICTING) {
    999   1.7     mikel 				printf("%s: <%s, %s, %s, %s> ignored; %s\n",
   1000   1.1  christos 				    sc->sc_dev.dv_xname,
   1001   1.1  christos 				    lpa->ipa_devident, lpa->ipa_devlogic,
   1002   1.7     mikel 				    lpa->ipa_devcompat, lpa->ipa_devclass,
   1003   1.7     mikel 				    "resource conflict");
   1004   1.1  christos 				ISAPNP_FREE(lpa);
   1005   1.1  christos 				continue;
   1006   1.1  christos 			}
   1007   1.1  christos 
   1008  1.22   thorpej 			lpa->ipa_ic = sc->sc_ic;
   1009  1.22   thorpej 			lpa->ipa_iot = sc->sc_iot;
   1010  1.22   thorpej 			lpa->ipa_memt = sc->sc_memt;
   1011  1.22   thorpej 			lpa->ipa_dmat = sc->sc_dmat;
   1012   1.1  christos 
   1013   1.1  christos 			isapnp_write_reg(sc, ISAPNP_ACTIVATE, 1);
   1014   1.1  christos #ifdef _KERNEL
   1015   1.7     mikel 			if (config_found_sm(self, lpa, isapnp_print,
   1016   1.1  christos 			    isapnp_submatch) == NULL)
   1017   1.1  christos 				isapnp_write_reg(sc, ISAPNP_ACTIVATE, 0);
   1018   1.1  christos #else
   1019   1.1  christos 			isapnp_print(lpa, NULL);
   1020   1.1  christos 			printf("\n");
   1021   1.1  christos #endif
   1022   1.1  christos 			ISAPNP_FREE(lpa);
   1023   1.1  christos 		}
   1024   1.1  christos 		isapnp_write_reg(sc, ISAPNP_WAKE, 0);    /* Good night cards */
   1025   1.1  christos 	}
   1026   1.1  christos }
   1027