forked from Imagelibrary/rtems
122 lines
3.3 KiB
C
122 lines
3.3 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
|
|
|
|
/* Driver Manager Driver Resource 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.
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include <drvmgr/drvmgr.h>
|
|
|
|
/* Find all the resource keys for a device among all bus resources */
|
|
int drvmgr_keys_get(struct drvmgr_dev *dev, struct drvmgr_key **keys)
|
|
{
|
|
struct drvmgr_bus *bus;
|
|
struct drvmgr_bus_res *node;
|
|
struct drvmgr_drv_res *res;
|
|
uint64_t drv_id;
|
|
|
|
bus = dev->parent;
|
|
if (!bus || !dev->drv)
|
|
return -1;
|
|
|
|
drv_id = dev->drv->drv_id;
|
|
|
|
/* Loop all resource arrays */
|
|
node = bus->reslist;
|
|
while (node) {
|
|
/* Find driver ID in resource array */
|
|
res = &node->resource[0];
|
|
while (res->drv_id) {
|
|
if (res->drv_id == drv_id) {
|
|
/* Found resource matching driver, now check
|
|
* that this resource is for this device.
|
|
*/
|
|
if (dev->minor_bus == res->minor_bus) {
|
|
/* Matching driver and core number */
|
|
if (keys)
|
|
*keys = res->keys;
|
|
return 0;
|
|
}
|
|
}
|
|
res++;
|
|
}
|
|
node = node->next;
|
|
}
|
|
if (keys)
|
|
*keys = NULL;
|
|
return 1;
|
|
}
|
|
|
|
/* Return key that matches key name */
|
|
struct drvmgr_key *drvmgr_key_get(
|
|
struct drvmgr_key *keys,
|
|
char *key_name)
|
|
{
|
|
struct drvmgr_key *key;
|
|
|
|
if (!keys)
|
|
return NULL;
|
|
|
|
key = keys;
|
|
while (key->key_type != DRVMGR_KT_NONE) {
|
|
if (strcmp(key_name, key->key_name) == 0)
|
|
return key;
|
|
key++;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
union drvmgr_key_value *drvmgr_key_val_get(
|
|
struct drvmgr_key *keys,
|
|
char *key_name,
|
|
enum drvmgr_kt key_type)
|
|
{
|
|
struct drvmgr_key *key_match;
|
|
|
|
key_match = drvmgr_key_get(keys, key_name);
|
|
if (key_match) {
|
|
/* Found key, put pointer to value into */
|
|
if ((key_type == DRVMGR_KT_ANY) ||
|
|
(key_match->key_type == key_type))
|
|
return &key_match->key_value;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
union drvmgr_key_value *drvmgr_dev_key_get(
|
|
struct drvmgr_dev *dev,
|
|
char *key_name,
|
|
enum drvmgr_kt key_type)
|
|
{
|
|
struct drvmgr_key *keys = NULL;
|
|
|
|
/* Find first entry in key array for the device */
|
|
if (drvmgr_keys_get(dev, &keys))
|
|
return NULL;
|
|
|
|
/* Find a specific key among the device keys */
|
|
return drvmgr_key_val_get(keys, key_name, key_type);
|
|
}
|