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// SPDX-License-Identifier: GPL-2.0+
#include "sparx5_main.h"
void sparx5_pgid_init(struct sparx5 *spx5)
{
int i;
for (i = 0; i < spx5->data->consts->n_pgids; i++)
spx5->pgid_map[i] = SPX5_PGID_FREE;
/* Reserved for unicast, flood control, broadcast, and CPU.
* These cannot be freed.
*/
for (i = 0; i <= sparx5_get_pgid(spx5, PGID_CPU); i++)
spx5->pgid_map[i] = SPX5_PGID_RESERVED;
}
int sparx5_pgid_alloc_mcast(struct sparx5 *spx5, u16 *idx)
{
int i;
/* The multicast area starts at index 65, but the first 7
* are reserved for flood masks and CPU. Start alloc after that.
*/
for (i = sparx5_get_pgid(spx5, PGID_MCAST_START);
i < spx5->data->consts->n_pgids; i++) {
if (spx5->pgid_map[i] == SPX5_PGID_FREE) {
spx5->pgid_map[i] = SPX5_PGID_MULTICAST;
*idx = i;
return 0;
}
}
return -EBUSY;
}
int sparx5_pgid_free(struct sparx5 *spx5, u16 idx)
{
if (idx <= sparx5_get_pgid(spx5, PGID_CPU) ||
idx >= spx5->data->consts->n_pgids)
return -EINVAL;
if (spx5->pgid_map[idx] == SPX5_PGID_FREE)
return -EINVAL;
spx5->pgid_map[idx] = SPX5_PGID_FREE;
return 0;
}
int sparx5_get_pgid(struct sparx5 *sparx5, int pgid)
{
return sparx5->data->consts->n_ports + pgid;
}
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