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/* SPDX-License-Identifier: BSD-2-Clause */
/* Driver Manager Driver Interface Implementation.
*
* COPYRIGHT (c) 2009 Cobham Gaisler AB.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
/*
* This is the part the device driver API, the functions rely on that the
* parent bus driver has implemented the neccessary operations correctly.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <drvmgr/drvmgr.h>
#include "drvmgr_internal.h"
/* Get device pointer from knowing the Driver and the Driver minor
* that was assigned to it
*/
int drvmgr_get_dev(
struct drvmgr_drv *drv,
int minor,
struct drvmgr_dev **pdev)
{
struct drvmgr_dev *dev;
if (!drv)
return -1;
DRVMGR_LOCK_READ();
dev = drv->dev;
while (dev) {
if (dev->minor_drv == minor)
break;
dev = dev->next_in_drv;
}
DRVMGR_UNLOCK();
if (!dev)
return -1;
if (pdev)
*pdev = dev;
return 0;
}
/* Get Bus frequency in HZ from bus driver */
int drvmgr_freq_get(
struct drvmgr_dev *dev,
int options,
unsigned int *freq_hz)
{
if (!dev || !dev->parent || !dev->parent->ops->get_freq)
return -1;
return dev->parent->ops->get_freq(dev, options, freq_hz);
}
/* Get driver prefix */
int drvmgr_get_dev_prefix(struct drvmgr_dev *dev, char *dev_prefix)
{
struct drvmgr_bus_params params;
if (!dev || !dev->parent || !dev->parent->ops->get_params)
return -1;
dev->parent->ops->get_params(dev, ¶ms);
if (!params.dev_prefix)
return -1;
if (dev_prefix)
strcpy(dev_prefix, params.dev_prefix);
return 0;
}
/* Register an interrupt */
int drvmgr_interrupt_register(
struct drvmgr_dev *dev,
int index,
const char *info,
drvmgr_isr isr,
void *arg)
{
if (!dev || !dev->parent || !dev->parent->ops->int_register)
return -1;
if (!isr)
return -1;
return dev->parent->ops->int_register(dev, index, info, isr, arg);
}
/* Unregister an interrupt */
int drvmgr_interrupt_unregister(
struct drvmgr_dev *dev,
int index,
drvmgr_isr isr,
void *arg)
{
if (!dev || !dev->parent || !dev->parent->ops->int_unregister)
return -1;
if (!isr)
return -1;
return dev->parent->ops->int_unregister(dev, index, isr, arg);
}
int drvmgr_interrupt_clear(
struct drvmgr_dev *dev,
int index)
{
if (!dev || !dev->parent || !dev->parent->ops->int_clear)
return -1;
return dev->parent->ops->int_clear(dev, index);
}
int drvmgr_interrupt_unmask(
struct drvmgr_dev *dev,
int index)
{
if (!dev || !dev->parent || !dev->parent->ops->int_unmask)
return -1;
return dev->parent->ops->int_unmask(dev, index);
}
int drvmgr_interrupt_mask(
struct drvmgr_dev *dev,
int index)
{
if (!dev || !dev->parent || !dev->parent->ops->int_mask)
return -1;
return dev->parent->ops->int_mask(dev, index);
}
#ifdef RTEMS_SMP
int drvmgr_interrupt_set_affinity(
struct drvmgr_dev *dev,
int index,
const Processor_mask *cpus)
{
if (!dev || !dev->parent || !dev->parent->ops->int_set_affinity)
return -1;
return dev->parent->ops->int_set_affinity(dev, index, cpus);
}
#endif
int drvmgr_on_rootbus(struct drvmgr_dev *dev)
{
if (dev->parent && dev->parent->dev && dev->parent->dev->parent)
return 0;
else
return 1;
}
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