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Search for space to attach a 3c562d correctly. From Hayakawa Koichi

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<haya@netbsd.org>, thanks.
This commit is contained in:
christos 2002-03-10 22:28:02 +00:00
parent 07fb02cbcb
commit 071d0cb34b
1 changed files with 21 additions and 11 deletions
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32
sys/dev/pcmcia/if_ep_pcmcia.c
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@ -1,4 +1,4 @@
/* $NetBSD: if_ep_pcmcia.c,v 1.36 2001/12/24 09:30:40 christos Exp $ */
/* $NetBSD: if_ep_pcmcia.c,v 1.37 2002/03/10 22:28:02 christos Exp $ */
/*-
* Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@ -67,7 +67,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: if_ep_pcmcia.c,v 1.36 2001/12/24 09:30:40 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: if_ep_pcmcia.c,v 1.37 2002/03/10 22:28:02 christos Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -288,20 +288,30 @@ ep_pcmcia_attach(parent, self, aux)
}
if (pa->product == PCMCIA_PRODUCT_3COM_3C562) {
bus_addr_t maxaddr = pa->pf->sc->iobase + pa->pf->sc->iosize;
/*
* the 3c562 can only use 0x??00-0x??7f
* according to the Linux driver
*/
for (i = pa->pf->sc->iobase; i < maxaddr; i += 0x10) {
/*
* the 3c562 can only use 0x??00-0x??7f
* according to the Linux driver
*/
if (i & 0x80)
continue;
/*
* 3c562 i/o may decodes address line not only A0-3
* but also A7. Anyway, we must sweep at most
* [0x0000, 0x0100). The address higher is given by a
* pcmcia bridge. But pcmcia bus-space allocation
* function implies cards will decode 10-bit address
* line. So we must search [0x0000, 0x0400).
*
* XXX: We must not check the bunch of I/O space range
* [0x400*n, 0x300 + 0x400*n) because they are
* reserved for legacy ISA devices and their alias
* images on PC/AT architecture.
*/
for (i = 0x0300; i < 0x0380; i += 0x10) {
if (pcmcia_io_alloc(pa->pf, i, cfe->iospace[0].length,
0, &psc->sc_pcioh) == 0)
break;
}
if (i >= maxaddr) {
if (i == 0x0380) {
printf(": can't allocate i/o space\n");
goto ioalloc_failed;
}