diff --git a/drivers/net/ethernet/microchip/sparx5/Makefile b/drivers/net/ethernet/microchip/sparx5/Makefile index 1cb1cc3f1a854..b68fe9c9a656d 100644 --- a/drivers/net/ethernet/microchip/sparx5/Makefile +++ b/drivers/net/ethernet/microchip/sparx5/Makefile @@ -10,7 +10,8 @@ sparx5-switch-y := sparx5_main.o sparx5_packet.o \ sparx5_switchdev.o sparx5_calendar.o sparx5_ethtool.o sparx5_fdma.o \ sparx5_ptp.o sparx5_pgid.o sparx5_tc.o sparx5_qos.o \ sparx5_vcap_impl.o sparx5_vcap_ag_api.o sparx5_tc_flower.o \ - sparx5_tc_matchall.o sparx5_pool.o sparx5_sdlb.o sparx5_police.o sparx5_psfp.o + sparx5_tc_matchall.o sparx5_pool.o sparx5_sdlb.o sparx5_police.o \ + sparx5_psfp.o sparx5_mirror.o sparx5-switch-$(CONFIG_SPARX5_DCB) += sparx5_dcb.o sparx5-switch-$(CONFIG_DEBUG_FS) += sparx5_vcap_debugfs.o diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h index 4de37a5387a49..5d026e1670f5a 100644 --- a/drivers/net/ethernet/microchip/sparx5/sparx5_main.h +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_main.h @@ -228,12 +228,20 @@ struct sparx5_mdb_entry { u16 pgid_idx; }; +struct sparx5_mall_mirror_entry { + u32 idx; + struct sparx5_port *port; +}; + struct sparx5_mall_entry { struct list_head list; struct sparx5_port *port; unsigned long cookie; enum flow_action_id type; bool ingress; + union { + struct sparx5_mall_mirror_entry mirror; + }; }; #define SPARX5_PTP_TIMEOUT msecs_to_jiffies(10) @@ -551,6 +559,10 @@ void sparx5_psfp_init(struct sparx5 *sparx5); void sparx5_new_base_time(struct sparx5 *sparx5, const u32 cycle_time, const ktime_t org_base_time, ktime_t *new_base_time); +/* sparx5_mirror.c */ +int sparx5_mirror_add(struct sparx5_mall_entry *entry); +void sparx5_mirror_del(struct sparx5_mall_entry *entry); + /* Clock period in picoseconds */ static inline u32 sparx5_clk_period(enum sparx5_core_clockfreq cclock) { diff --git a/drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c b/drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c new file mode 100644 index 0000000000000..f029634a6a42f --- /dev/null +++ b/drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c @@ -0,0 +1,198 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Microchip Sparx5 Switch driver + * + * Copyright (c) 2024 Microchip Technology Inc. and its subsidiaries. + */ + +#include "sparx5_main.h" +#include "sparx5_main_regs.h" +#include "sparx5_tc.h" + +#define SPX5_MIRROR_PROBE_MAX 3 +#define SPX5_MIRROR_DISABLED 0 +#define SPX5_MIRROR_EGRESS 1 +#define SPX5_MIRROR_INGRESS 2 +#define SPX5_MIRROR_MONITOR_PORT_DEFAULT 65 +#define SPX5_QFWD_MP_OFFSET 9 /* Mirror port offset in the QFWD register */ + +/* Convert from bool ingress/egress to mirror direction */ +static u32 sparx5_mirror_to_dir(bool ingress) +{ + return ingress ? SPX5_MIRROR_INGRESS : SPX5_MIRROR_EGRESS; +} + +/* Get ports belonging to this mirror */ +static u64 sparx5_mirror_port_get(struct sparx5 *sparx5, u32 idx) +{ + return (u64)spx5_rd(sparx5, ANA_AC_PROBE_PORT_CFG1(idx)) << 32 | + spx5_rd(sparx5, ANA_AC_PROBE_PORT_CFG(idx)); +} + +/* Add port to mirror (only front ports) */ +static void sparx5_mirror_port_add(struct sparx5 *sparx5, u32 idx, u32 portno) +{ + u32 val, reg = portno; + + reg = portno / BITS_PER_BYTE; + val = BIT(portno % BITS_PER_BYTE); + + if (reg == 0) + return spx5_rmw(val, val, sparx5, ANA_AC_PROBE_PORT_CFG(idx)); + else + return spx5_rmw(val, val, sparx5, ANA_AC_PROBE_PORT_CFG1(idx)); +} + +/* Delete port from mirror (only front ports) */ +static void sparx5_mirror_port_del(struct sparx5 *sparx5, u32 idx, u32 portno) +{ + u32 val, reg = portno; + + reg = portno / BITS_PER_BYTE; + val = BIT(portno % BITS_PER_BYTE); + + if (reg == 0) + return spx5_rmw(0, val, sparx5, ANA_AC_PROBE_PORT_CFG(idx)); + else + return spx5_rmw(0, val, sparx5, ANA_AC_PROBE_PORT_CFG1(idx)); +} + +/* Check if mirror contains port */ +static bool sparx5_mirror_contains(struct sparx5 *sparx5, u32 idx, u32 portno) +{ + return (sparx5_mirror_port_get(sparx5, idx) & BIT_ULL(portno)) != 0; +} + +/* Check if mirror is empty */ +static bool sparx5_mirror_is_empty(struct sparx5 *sparx5, u32 idx) +{ + return sparx5_mirror_port_get(sparx5, idx) == 0; +} + +/* Get direction of mirror */ +static u32 sparx5_mirror_dir_get(struct sparx5 *sparx5, u32 idx) +{ + u32 val = spx5_rd(sparx5, ANA_AC_PROBE_CFG(idx)); + + return ANA_AC_PROBE_CFG_PROBE_DIRECTION_GET(val); +} + +/* Set direction of mirror */ +static void sparx5_mirror_dir_set(struct sparx5 *sparx5, u32 idx, u32 dir) +{ + spx5_rmw(ANA_AC_PROBE_CFG_PROBE_DIRECTION_SET(dir), + ANA_AC_PROBE_CFG_PROBE_DIRECTION, sparx5, + ANA_AC_PROBE_CFG(idx)); +} + +/* Set the monitor port for this mirror */ +static void sparx5_mirror_monitor_set(struct sparx5 *sparx5, u32 idx, + u32 portno) +{ + spx5_rmw(QFWD_FRAME_COPY_CFG_FRMC_PORT_VAL_SET(portno), + QFWD_FRAME_COPY_CFG_FRMC_PORT_VAL, sparx5, + QFWD_FRAME_COPY_CFG(idx + SPX5_QFWD_MP_OFFSET)); +} + +/* Get the monitor port of this mirror */ +static u32 sparx5_mirror_monitor_get(struct sparx5 *sparx5, u32 idx) +{ + u32 val = spx5_rd(sparx5, + QFWD_FRAME_COPY_CFG(idx + SPX5_QFWD_MP_OFFSET)); + + return QFWD_FRAME_COPY_CFG_FRMC_PORT_VAL_GET(val); +} + +/* Check if port is the monitor port of this mirror */ +static bool sparx5_mirror_has_monitor(struct sparx5 *sparx5, u32 idx, + u32 portno) +{ + return sparx5_mirror_monitor_get(sparx5, idx) == portno; +} + +/* Get a suitable mirror for this port */ +static int sparx5_mirror_get(struct sparx5_port *sport, + struct sparx5_port *mport, u32 dir, u32 *idx) +{ + struct sparx5 *sparx5 = sport->sparx5; + u32 i; + + /* Check if this port is already used as a monitor port */ + for (i = 0; i < SPX5_MIRROR_PROBE_MAX; i++) + if (sparx5_mirror_has_monitor(sparx5, i, sport->portno)) + return -EINVAL; + + /* Check if existing mirror can be reused + * (same direction and monitor port). + */ + for (i = 0; i < SPX5_MIRROR_PROBE_MAX; i++) { + if (sparx5_mirror_dir_get(sparx5, i) == dir && + sparx5_mirror_has_monitor(sparx5, i, mport->portno)) { + *idx = i; + return 0; + } + } + + /* Return free mirror */ + for (i = 0; i < SPX5_MIRROR_PROBE_MAX; i++) { + if (sparx5_mirror_is_empty(sparx5, i)) { + *idx = i; + return 0; + } + } + + return -ENOENT; +} + +int sparx5_mirror_add(struct sparx5_mall_entry *entry) +{ + u32 mirror_idx, dir = sparx5_mirror_to_dir(entry->ingress); + struct sparx5_port *sport, *mport; + struct sparx5 *sparx5; + int err; + + /* Source port */ + sport = entry->port; + /* monitor port */ + mport = entry->mirror.port; + sparx5 = sport->sparx5; + + if (sport->portno == mport->portno) + return -EINVAL; + + err = sparx5_mirror_get(sport, mport, dir, &mirror_idx); + if (err) + return err; + + if (sparx5_mirror_contains(sparx5, mirror_idx, sport->portno)) + return -EEXIST; + + /* Add port to mirror */ + sparx5_mirror_port_add(sparx5, mirror_idx, sport->portno); + + /* Set direction of mirror */ + sparx5_mirror_dir_set(sparx5, mirror_idx, dir); + + /* Set monitor port for mirror */ + sparx5_mirror_monitor_set(sparx5, mirror_idx, mport->portno); + + entry->mirror.idx = mirror_idx; + + return 0; +} + +void sparx5_mirror_del(struct sparx5_mall_entry *entry) +{ + struct sparx5_port *port = entry->port; + struct sparx5 *sparx5 = port->sparx5; + u32 mirror_idx = entry->mirror.idx; + + sparx5_mirror_port_del(sparx5, mirror_idx, port->portno); + if (!sparx5_mirror_is_empty(sparx5, mirror_idx)) + return; + + sparx5_mirror_dir_set(sparx5, mirror_idx, SPX5_MIRROR_DISABLED); + + sparx5_mirror_monitor_set(sparx5, + mirror_idx, + SPX5_MIRROR_MONITOR_PORT_DEFAULT); +}