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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* CPU nexus driver
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/devops.h>
#include <sys/modctl.h>
#include <sys/cmn_err.h>
#include <sys/ddi.h>
#include <sys/sunddi.h>
#include <sys/sunndi.h>
static int cpunex_attach(dev_info_t *, ddi_attach_cmd_t);
static int cpunex_detach(dev_info_t *, ddi_detach_cmd_t);
static int cpunex_bus_ctl(dev_info_t *, dev_info_t *, ddi_ctl_enum_t,
void *, void *);
static struct bus_ops cpunex_bus_ops = {
BUSO_REV,
nullbusmap,
NULL,
NULL,
NULL,
i_ddi_map_fault,
ddi_no_dma_map,
ddi_no_dma_allochdl,
ddi_no_dma_freehdl,
ddi_no_dma_bindhdl,
ddi_no_dma_unbindhdl,
ddi_no_dma_flush,
ddi_no_dma_win,
ddi_no_dma_mctl,
cpunex_bus_ctl,
ddi_bus_prop_op,
};
static struct dev_ops cpunex_ops = {
DEVO_REV,
0,
ddi_no_info,
nulldev,
nulldev,
cpunex_attach,
cpunex_detach,
nodev,
NULL,
&cpunex_bus_ops,
NULL
};
static struct modldrv modldrv = {
&mod_driverops,
"cpu nexus driver v1.0",
&cpunex_ops
};
static struct modlinkage modlinkage = {
MODREV_1,
&modldrv,
NULL
};
/*
* cpunex_bus_ctl()
* This routine implements nexus bus ctl operations. Of importance are
* DDI_CTLOPS_REPORTDEV, DDI_CTLOPS_INITCHILD, DDI_CTLOPS_UNINITCHILD
* and DDI_CTLOPS_POWER. For DDI_CTLOPS_INITCHILD, it tries to lookup
* reg property on the child node and builds and sets the name.
*/
static int
cpunex_bus_ctl(dev_info_t *dip, dev_info_t *rdip, ddi_ctl_enum_t op, void *arg,
void *result)
{
switch (op) {
case DDI_CTLOPS_REPORTDEV: {
dev_info_t *pdip = ddi_get_parent(rdip);
cmn_err(CE_CONT, "?%s%d at %s%d",
ddi_node_name(rdip), ddi_get_instance(rdip),
ddi_node_name(pdip), ddi_get_instance(pdip));
return (DDI_SUCCESS);
}
case DDI_CTLOPS_INITCHILD: {
dev_info_t *cdip = (dev_info_t *)arg;
int i;
char caddr[MAXNAMELEN];
i = ddi_prop_get_int(DDI_DEV_T_ANY, cdip,
DDI_PROP_DONTPASS, "reg", -1);
if (i == -1) {
cmn_err(CE_NOTE, "!%s(%d): \"reg\" property "
"not found", ddi_node_name(cdip),
ddi_get_instance(cdip));
return (DDI_NOT_WELL_FORMED);
}
(void) sprintf(caddr, "%d", i);
ddi_set_name_addr(cdip, caddr);
return (DDI_SUCCESS);
}
case DDI_CTLOPS_UNINITCHILD: {
ddi_prop_remove_all((dev_info_t *)arg);
ddi_set_name_addr((dev_info_t *)arg, NULL);
return (DDI_SUCCESS);
}
default: {
return (ddi_ctlops(dip, rdip, op, arg, result));
}
}
}
/*ARGSUSED*/
static int
cpunex_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
{
switch (cmd) {
case DDI_ATTACH:
case DDI_RESUME:
break;
default:
return (DDI_FAILURE);
}
return (DDI_SUCCESS);
}
/*ARGSUSED*/
static int
cpunex_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
{
switch (cmd) {
case DDI_DETACH:
case DDI_SUSPEND:
break;
default:
return (DDI_FAILURE);
}
return (DDI_SUCCESS);
}
int
_init(void)
{
int error;
error = mod_install(&modlinkage);
return (error);
}
int
_fini(void)
{
int error;
error = mod_remove(&modlinkage);
return (error);
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&modlinkage, modinfop));
}
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