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/* $OpenBSD: xhub.c,v 1.2 2008/07/28 18:50:59 miod Exp $ */
/*
* Copyright (c) 2008 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* IP27 Hub Widget
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <machine/autoconf.h>
#include <machine/cpu.h>
#include <sgi/xbow/xbow.h>
#include <sgi/xbow/xbowdevs.h>
int xhub_match(struct device *, void *, void *);
void xhub_attach(struct device *, struct device *, void *);
struct cfattach xhub_ca = {
sizeof(struct device), xhub_match, xhub_attach,
};
struct cfdriver xhub_cd = {
NULL, "xhub", DV_DULL,
};
int
xhub_match(struct device *parent, void *match, void *aux)
{
struct xbow_attach_args *xaa = aux;
if (xaa->xaa_vendor == XBOW_VENDOR_SGI4 &&
xaa->xaa_product == XBOW_PRODUCT_SGI4_HUB)
return xbow_intr_widget == 0 ? 20 : 1;
return 0;
}
void
xhub_attach(struct device *parent, struct device *self, void *aux)
{
struct xbow_attach_args *xaa = aux;
printf(" revision %d\n", xaa->xaa_revision);
/*
* If no other widget has claimed interrupts routing, do it now.
*/
if (xbow_intr_widget == 0) {
xbow_intr_widget = xaa->xaa_widget;
}
/* initialize interrupt handling here */
}
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