static u16 sci_remote_node_table_allocate_single_remote_node(
struct sci_remote_node_table *remote_node_table,
u32 group_table_index)
{
u8 index;
u8 group_value;
u32 group_index;
u16 remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
group_index = sci_remote_node_table_get_group_index(
remote_node_table, group_table_index);
if (group_index != SCIC_SDS_REMOTE_NODE_TABLE_INVALID_INDEX) {
group_value = sci_remote_node_table_get_group_value(
remote_node_table, group_index);
for (index = 0; index < SCU_STP_REMOTE_NODE_COUNT; index++) {
if (((1 << index) & group_value) != 0) {
remote_node_index = (u16)(group_index * SCU_STP_REMOTE_NODE_COUNT
+ index);
sci_remote_node_table_clear_group_index(
remote_node_table, group_table_index, group_index
);
sci_remote_node_table_clear_node_index(
remote_node_table, remote_node_index
);
if (group_table_index > 0) {
sci_remote_node_table_set_group_index(
remote_node_table, group_table_index - 1, group_index
);
}
break;
}
}
}
return remote_node_index;
}
/**
*
* @out]: remote_node_table The remote node table from which to allocate a
* remote node.
* @table_index: The group index that is to be used for the search.
*
* This method will allocate a single RNi from the remote node table. The
* table index will determine from which remote node group table to search.
* This search may fail and another group node table can be specified. The
* function is designed to allow a serach of the available single remote node
* group up to the triple remote node group. If an entry is found in the
* specified table the remote node is removed and the remote node groups are
* updated. The RNi value or an invalid remote node context if an RNi can not
* be found.
*/
static u16 sci_remote_node_table_allocate_single_remote_node(
struct sci_remote_node_table *remote_node_table,
u32 group_table_index)
{
u8 index;
u8 group_value;
u32 group_index;
u16 remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
group_index = sci_remote_node_table_get_group_index(
remote_node_table, group_table_index);
/* We could not find an available slot in the table selector 0 */
if (group_index != SCIC_SDS_REMOTE_NODE_TABLE_INVALID_INDEX) {
group_value = sci_remote_node_table_get_group_value(
remote_node_table, group_index);
for (index = 0; index < SCU_STP_REMOTE_NODE_COUNT; index++) {
if (((1 << index) & group_value) != 0) {
/* We have selected a bit now clear it */
remote_node_index = (u16)(group_index * SCU_STP_REMOTE_NODE_COUNT
+ index);
sci_remote_node_table_clear_group_index(
remote_node_table, group_table_index, group_index
);
sci_remote_node_table_clear_node_index(
remote_node_table, remote_node_index
);
if (group_table_index > 0) {
sci_remote_node_table_set_group_index(
remote_node_table, group_table_index - 1, group_index
);
}
break;
}
}
}
return remote_node_index;
}
static u16 sci_remote_node_table_allocate_triple_remote_node(
struct sci_remote_node_table *remote_node_table,
u32 group_table_index)
{
u32 group_index;
u16 remote_node_index = SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX;
group_index = sci_remote_node_table_get_group_index(
remote_node_table, group_table_index);
if (group_index != SCIC_SDS_REMOTE_NODE_TABLE_INVALID_INDEX) {
remote_node_index = (u16)group_index * SCU_STP_REMOTE_NODE_COUNT;
sci_remote_node_table_clear_group_index(
remote_node_table, group_table_index, group_index
);
sci_remote_node_table_clear_group(
remote_node_table, group_index
);
}
return remote_node_index;
}
