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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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <sys/types.h>
#include <sys/sunddi.h>
#include <sys/sunndi.h>
#include <sys/conf.h>
#include <sys/modctl.h>
#include <sys/stat.h>
#include <fpc.h>
static int fpc_attach(dev_info_t *dip, ddi_attach_cmd_t cmd);
static int fpc_detach(dev_info_t *dip, ddi_detach_cmd_t cmd);
static struct dev_ops fpc_ops = {
DEVO_REV,
0,
nulldev,
nulldev,
nulldev,
fpc_attach,
fpc_detach,
nodev,
NULL,
NULL,
nodev,
ddi_quiesce_not_needed, /* quiesce */
};
extern struct mod_ops mod_driverops;
static struct modldrv md = {
&mod_driverops,
"IO Chip Perf Counter",
&fpc_ops,
};
static struct modlinkage ml = {
MODREV_1,
(void *)&md,
NULL
};
int
_init(void)
{
if (fpc_init_platform_check() != SUCCESS)
return (ENODEV);
return (mod_install(&ml));
}
int
_info(struct modinfo *modinfop)
{
return (mod_info(&ml, modinfop));
}
int
_fini(void)
{
return (mod_remove(&ml));
}
static int
fpc_attach(dev_info_t *dip, ddi_attach_cmd_t cmd)
{
switch (cmd) {
/*
* Since the driver saves no state between calls, we can fully detach
* on suspend and fully attach on resume.
*
* An RFE might be to save event register states for restore.
* The result of not doing this is that the kstat reader (busstat)
* may quit upon resume, seeing that the events have changed out from
* underneath it (since the registers were powered off upon suspend).
*/
case DDI_RESUME:
case DDI_ATTACH:
if (fpc_kstat_init(dip) != DDI_SUCCESS) {
(void) fpc_detach(dip, DDI_DETACH);
return (DDI_FAILURE);
}
return (DDI_SUCCESS);
default:
return (DDI_FAILURE);
}
}
static int
fpc_detach(dev_info_t *dip, ddi_detach_cmd_t cmd)
{
switch (cmd) {
case DDI_SUSPEND:
case DDI_DETACH:
fpc_kstat_fini(dip);
return (DDI_SUCCESS);
default:
return (DDI_FAILURE);
}
}
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