// SPDX-License-Identifier: GPL-2.0+ #include "sparx5_main.h" void sparx5_pgid_init(struct sparx5 *spx5) { int i; for (i = 0; i < PGID_TABLE_SIZE; i++) spx5->pgid_map[i] = SPX5_PGID_FREE; /* Reserved for unicast, flood control, broadcast, and CPU. * These cannot be freed. */ for (i = 0; i <= 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 = PGID_MCAST_START; i < PGID_TABLE_SIZE; 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 <= PGID_CPU || idx >= PGID_TABLE_SIZE) return -EINVAL; if (spx5->pgid_map[idx] == SPX5_PGID_FREE) return -EINVAL; spx5->pgid_map[idx] = SPX5_PGID_FREE; return 0; }