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/* Driver Manager Driver Resource Interface Implementation.
*
* COPYRIGHT (c) 2009 Cobham Gaisler AB.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#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);
}
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