diff options
Diffstat (limited to 'drivers/net/ethernet/microchip')
4 files changed, 85 insertions, 1 deletions
diff --git a/drivers/net/ethernet/microchip/sparx5/Makefile b/drivers/net/ethernet/microchip/sparx5/Makefile index e9dd348a6ebb..4402c3ed1dc5 100644 --- a/drivers/net/ethernet/microchip/sparx5/Makefile +++ b/drivers/net/ethernet/microchip/sparx5/Makefile @@ -8,4 +8,4 @@ obj-$(CONFIG_SPARX5_SWITCH) += sparx5-switch.o sparx5-switch-objs := sparx5_main.o sparx5_packet.o \ sparx5_netdev.o sparx5_phylink.o sparx5_port.o sparx5_mactable.o sparx5_vlan.o \ sparx5_switchdev.o sparx5_calendar.o sparx5_ethtool.o sparx5_fdma.o \ - sparx5_ptp.o + sparx5_ptp.o sparx5_pgid.o diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c index 5f7c7030ce03..01be7bd84181 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.c +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.c @@ -626,6 +626,9 @@ static int sparx5_start(struct sparx5 *sparx5) /* Init MAC table, ageing */ sparx5_mact_init(sparx5); + /* Init PGID table arbitrator */ + sparx5_pgid_init(sparx5); + /* Setup VLANs */ sparx5_vlan_init(sparx5); diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h index df68a0891029..e97fa091c740 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h @@ -66,6 +66,12 @@ enum sparx5_vlan_port_type { #define PGID_BCAST (PGID_BASE + 6) #define PGID_CPU (PGID_BASE + 7) +#define PGID_TABLE_SIZE 3290 + +#define PGID_MCAST_START 65 +#define PGID_GLAG_START 833 +#define PGID_GLAG_END 1088 + #define IFH_LEN 9 /* 36 bytes */ #define NULL_VID 0 #define SPX5_MACT_PULL_DELAY (2 * HZ) @@ -271,6 +277,8 @@ struct sparx5 { struct mutex ptp_lock; /* lock for ptp interface state */ u16 ptp_skbs; int ptp_irq; + /* PGID allocation map */ + u8 pgid_map[PGID_TABLE_SIZE]; }; /* sparx5_switchdev.c */ @@ -359,6 +367,19 @@ void sparx5_ptp_txtstamp_release(struct sparx5_port *port, struct sk_buff *skb); irqreturn_t sparx5_ptp_irq_handler(int irq, void *args); +/* sparx5_pgid.c */ +enum sparx5_pgid_type { + SPX5_PGID_FREE, + SPX5_PGID_RESERVED, + SPX5_PGID_MULTICAST, + SPX5_PGID_GLAG +}; + +void sparx5_pgid_init(struct sparx5 *spx5); +int sparx5_pgid_alloc_glag(struct sparx5 *spx5, u16 *idx); +int sparx5_pgid_alloc_mcast(struct sparx5 *spx5, u16 *idx); +int sparx5_pgid_free(struct sparx5 *spx5, u16 idx); + /* Clock period in picoseconds */ static inline u32 sparx5_clk_period(enum sparx5_core_clockfreq cclock) { diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_pgid.c b/drivers/net/ethernet/microchip/sparx5/sparx5_pgid.c new file mode 100644 index 000000000000..90366fcb9958 --- /dev/null +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_pgid.c @@ -0,0 +1,60 @@ +// 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_glag(struct sparx5 *spx5, u16 *idx) +{ + int i; + + for (i = PGID_GLAG_START; i <= PGID_GLAG_END; i++) + if (spx5->pgid_map[i] == SPX5_PGID_FREE) { + spx5->pgid_map[i] = SPX5_PGID_GLAG; + *idx = i; + return 0; + } + + return -EBUSY; +} + +int sparx5_pgid_alloc_mcast(struct sparx5 *spx5, u16 *idx) +{ + int i; + + for (i = PGID_MCAST_START; i < PGID_TABLE_SIZE; i++) { + if (i == PGID_GLAG_START) + i = PGID_GLAG_END + 1; + + 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; +} |