| 1 | // SPDX-License-Identifier: GPL-2.0+ |
|---|---|
| 2 | #include "sparx5_main.h" |
| 3 | |
| 4 | void sparx5_pgid_init(struct sparx5 *spx5) |
| 5 | { |
| 6 | int i; |
| 7 | |
| 8 | for (i = 0; i < PGID_TABLE_SIZE; i++) |
| 9 | spx5->pgid_map[i] = SPX5_PGID_FREE; |
| 10 | |
| 11 | /* Reserved for unicast, flood control, broadcast, and CPU. |
| 12 | * These cannot be freed. |
| 13 | */ |
| 14 | for (i = 0; i <= PGID_CPU; i++) |
| 15 | spx5->pgid_map[i] = SPX5_PGID_RESERVED; |
| 16 | } |
| 17 | |
| 18 | int sparx5_pgid_alloc_mcast(struct sparx5 *spx5, u16 *idx) |
| 19 | { |
| 20 | int i; |
| 21 | |
| 22 | /* The multicast area starts at index 65, but the first 7 |
| 23 | * are reserved for flood masks and CPU. Start alloc after that. |
| 24 | */ |
| 25 | for (i = PGID_MCAST_START; i < PGID_TABLE_SIZE; i++) { |
| 26 | if (spx5->pgid_map[i] == SPX5_PGID_FREE) { |
| 27 | spx5->pgid_map[i] = SPX5_PGID_MULTICAST; |
| 28 | *idx = i; |
| 29 | return 0; |
| 30 | } |
| 31 | } |
| 32 | |
| 33 | return -EBUSY; |
| 34 | } |
| 35 | |
| 36 | int sparx5_pgid_free(struct sparx5 *spx5, u16 idx) |
| 37 | { |
| 38 | if (idx <= PGID_CPU || idx >= PGID_TABLE_SIZE) |
| 39 | return -EINVAL; |
| 40 | |
| 41 | if (spx5->pgid_map[idx] == SPX5_PGID_FREE) |
| 42 | return -EINVAL; |
| 43 | |
| 44 | spx5->pgid_map[idx] = SPX5_PGID_FREE; |
| 45 | return 0; |
| 46 | } |
| 47 |