diff options
Diffstat (limited to 'drivers/net/ethernet/microchip/sparx5/lan969x/lan969x.c')
| -rw-r--r-- | drivers/net/ethernet/microchip/sparx5/lan969x/lan969x.c | 348 |
1 files changed, 348 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/sparx5/lan969x/lan969x.c b/drivers/net/ethernet/microchip/sparx5/lan969x/lan969x.c new file mode 100644 index 000000000000..67463d41d10e --- /dev/null +++ b/drivers/net/ethernet/microchip/sparx5/lan969x/lan969x.c @@ -0,0 +1,348 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* Microchip lan969x Switch driver + * + * Copyright (c) 2024 Microchip Technology Inc. and its subsidiaries. + */ + +#include "lan969x.h" + +#define LAN969X_SDLB_GRP_CNT 5 +#define LAN969X_HSCH_LEAK_GRP_CNT 4 + +static const struct sparx5_main_io_resource lan969x_main_iomap[] = { + { TARGET_CPU, 0xc0000, 0 }, /* 0xe00c0000 */ + { TARGET_FDMA, 0xc0400, 0 }, /* 0xe00c0400 */ + { TARGET_GCB, 0x2010000, 1 }, /* 0xe2010000 */ + { TARGET_QS, 0x2030000, 1 }, /* 0xe2030000 */ + { TARGET_PTP, 0x2040000, 1 }, /* 0xe2040000 */ + { TARGET_ANA_ACL, 0x2050000, 1 }, /* 0xe2050000 */ + { TARGET_LRN, 0x2060000, 1 }, /* 0xe2060000 */ + { TARGET_VCAP_SUPER, 0x2080000, 1 }, /* 0xe2080000 */ + { TARGET_QSYS, 0x20a0000, 1 }, /* 0xe20a0000 */ + { TARGET_QFWD, 0x20b0000, 1 }, /* 0xe20b0000 */ + { TARGET_XQS, 0x20c0000, 1 }, /* 0xe20c0000 */ + { TARGET_VCAP_ES2, 0x20d0000, 1 }, /* 0xe20d0000 */ + { TARGET_VCAP_ES0, 0x20e0000, 1 }, /* 0xe20e0000 */ + { TARGET_ANA_AC_POL, 0x2200000, 1 }, /* 0xe2200000 */ + { TARGET_QRES, 0x2280000, 1 }, /* 0xe2280000 */ + { TARGET_EACL, 0x22c0000, 1 }, /* 0xe22c0000 */ + { TARGET_ANA_CL, 0x2400000, 1 }, /* 0xe2400000 */ + { TARGET_ANA_L3, 0x2480000, 1 }, /* 0xe2480000 */ + { TARGET_ANA_AC_SDLB, 0x2500000, 1 }, /* 0xe2500000 */ + { TARGET_HSCH, 0x2580000, 1 }, /* 0xe2580000 */ + { TARGET_REW, 0x2600000, 1 }, /* 0xe2600000 */ + { TARGET_ANA_L2, 0x2800000, 1 }, /* 0xe2800000 */ + { TARGET_ANA_AC, 0x2900000, 1 }, /* 0xe2900000 */ + { TARGET_VOP, 0x2a00000, 1 }, /* 0xe2a00000 */ + { TARGET_DEV2G5, 0x3004000, 1 }, /* 0xe3004000 */ + { TARGET_DEV10G, 0x3008000, 1 }, /* 0xe3008000 */ + { TARGET_PCS10G_BR, 0x300c000, 1 }, /* 0xe300c000 */ + { TARGET_DEV2G5 + 1, 0x3010000, 1 }, /* 0xe3010000 */ + { TARGET_DEV2G5 + 2, 0x3014000, 1 }, /* 0xe3014000 */ + { TARGET_DEV2G5 + 3, 0x3018000, 1 }, /* 0xe3018000 */ + { TARGET_DEV2G5 + 4, 0x301c000, 1 }, /* 0xe301c000 */ + { TARGET_DEV10G + 1, 0x3020000, 1 }, /* 0xe3020000 */ + { TARGET_PCS10G_BR + 1, 0x3024000, 1 }, /* 0xe3024000 */ + { TARGET_DEV2G5 + 5, 0x3028000, 1 }, /* 0xe3028000 */ + { TARGET_DEV2G5 + 6, 0x302c000, 1 }, /* 0xe302c000 */ + { TARGET_DEV2G5 + 7, 0x3030000, 1 }, /* 0xe3030000 */ + { TARGET_DEV2G5 + 8, 0x3034000, 1 }, /* 0xe3034000 */ + { TARGET_DEV10G + 2, 0x3038000, 1 }, /* 0xe3038000 */ + { TARGET_PCS10G_BR + 2, 0x303c000, 1 }, /* 0xe303c000 */ + { TARGET_DEV2G5 + 9, 0x3040000, 1 }, /* 0xe3040000 */ + { TARGET_DEV5G, 0x3044000, 1 }, /* 0xe3044000 */ + { TARGET_PCS5G_BR, 0x3048000, 1 }, /* 0xe3048000 */ + { TARGET_DEV2G5 + 10, 0x304c000, 1 }, /* 0xe304c000 */ + { TARGET_DEV2G5 + 11, 0x3050000, 1 }, /* 0xe3050000 */ + { TARGET_DEV2G5 + 12, 0x3054000, 1 }, /* 0xe3054000 */ + { TARGET_DEV10G + 3, 0x3058000, 1 }, /* 0xe3058000 */ + { TARGET_PCS10G_BR + 3, 0x305c000, 1 }, /* 0xe305c000 */ + { TARGET_DEV2G5 + 13, 0x3060000, 1 }, /* 0xe3060000 */ + { TARGET_DEV5G + 1, 0x3064000, 1 }, /* 0xe3064000 */ + { TARGET_PCS5G_BR + 1, 0x3068000, 1 }, /* 0xe3068000 */ + { TARGET_DEV2G5 + 14, 0x306c000, 1 }, /* 0xe306c000 */ + { TARGET_DEV2G5 + 15, 0x3070000, 1 }, /* 0xe3070000 */ + { TARGET_DEV2G5 + 16, 0x3074000, 1 }, /* 0xe3074000 */ + { TARGET_DEV10G + 4, 0x3078000, 1 }, /* 0xe3078000 */ + { TARGET_PCS10G_BR + 4, 0x307c000, 1 }, /* 0xe307c000 */ + { TARGET_DEV2G5 + 17, 0x3080000, 1 }, /* 0xe3080000 */ + { TARGET_DEV5G + 2, 0x3084000, 1 }, /* 0xe3084000 */ + { TARGET_PCS5G_BR + 2, 0x3088000, 1 }, /* 0xe3088000 */ + { TARGET_DEV2G5 + 18, 0x308c000, 1 }, /* 0xe308c000 */ + { TARGET_DEV2G5 + 19, 0x3090000, 1 }, /* 0xe3090000 */ + { TARGET_DEV2G5 + 20, 0x3094000, 1 }, /* 0xe3094000 */ + { TARGET_DEV10G + 5, 0x3098000, 1 }, /* 0xe3098000 */ + { TARGET_PCS10G_BR + 5, 0x309c000, 1 }, /* 0xe309c000 */ + { TARGET_DEV2G5 + 21, 0x30a0000, 1 }, /* 0xe30a0000 */ + { TARGET_DEV5G + 3, 0x30a4000, 1 }, /* 0xe30a4000 */ + { TARGET_PCS5G_BR + 3, 0x30a8000, 1 }, /* 0xe30a8000 */ + { TARGET_DEV2G5 + 22, 0x30ac000, 1 }, /* 0xe30ac000 */ + { TARGET_DEV2G5 + 23, 0x30b0000, 1 }, /* 0xe30b0000 */ + { TARGET_DEV2G5 + 24, 0x30b4000, 1 }, /* 0xe30b4000 */ + { TARGET_DEV10G + 6, 0x30b8000, 1 }, /* 0xe30b8000 */ + { TARGET_PCS10G_BR + 6, 0x30bc000, 1 }, /* 0xe30bc000 */ + { TARGET_DEV2G5 + 25, 0x30c0000, 1 }, /* 0xe30c0000 */ + { TARGET_DEV10G + 7, 0x30c4000, 1 }, /* 0xe30c4000 */ + { TARGET_PCS10G_BR + 7, 0x30c8000, 1 }, /* 0xe30c8000 */ + { TARGET_DEV2G5 + 26, 0x30cc000, 1 }, /* 0xe30cc000 */ + { TARGET_DEV10G + 8, 0x30d0000, 1 }, /* 0xe30d0000 */ + { TARGET_PCS10G_BR + 8, 0x30d4000, 1 }, /* 0xe30d4000 */ + { TARGET_DEV2G5 + 27, 0x30d8000, 1 }, /* 0xe30d8000 */ + { TARGET_DEV10G + 9, 0x30dc000, 1 }, /* 0xe30dc000 */ + { TARGET_PCS10G_BR + 9, 0x30e0000, 1 }, /* 0xe30e0000 */ + { TARGET_DSM, 0x30ec000, 1 }, /* 0xe30ec000 */ + { TARGET_PORT_CONF, 0x30f0000, 1 }, /* 0xe30f0000 */ + { TARGET_ASM, 0x3200000, 1 }, /* 0xe3200000 */ +}; + +static struct sparx5_sdlb_group lan969x_sdlb_groups[LAN969X_SDLB_GRP_CNT] = { + { 1000000000, 8192 / 2, 64 }, /* 1 G */ + { 500000000, 8192 / 2, 64 }, /* 500 M */ + { 100000000, 8192 / 4, 64 }, /* 100 M */ + { 50000000, 8192 / 4, 64 }, /* 50 M */ + { 5000000, 8192 / 8, 64 }, /* 10 M */ +}; + +static u32 lan969x_hsch_max_group_rate[LAN969X_HSCH_LEAK_GRP_CNT] = { + 655355, 1048568, 6553550, 10485680 +}; + +static struct sparx5_sdlb_group *lan969x_get_sdlb_group(int idx) +{ + return &lan969x_sdlb_groups[idx]; +} + +static u32 lan969x_get_hsch_max_group_rate(int grp) +{ + return lan969x_hsch_max_group_rate[grp]; +} + +static u32 lan969x_get_dev_mode_bit(struct sparx5 *sparx5, int port) +{ + if (lan969x_port_is_2g5(port) || lan969x_port_is_5g(port)) + return port; + + /* 10G */ + switch (port) { + case 0: + return 12; + case 4: + return 13; + case 8: + return 14; + case 12: + return 0; + default: + return port; + } +} + +static u32 lan969x_port_dev_mapping(struct sparx5 *sparx5, int port) +{ + if (lan969x_port_is_5g(port)) { + switch (port) { + case 9: + return 0; + case 13: + return 1; + case 17: + return 2; + case 21: + return 3; + } + } + + if (lan969x_port_is_10g(port)) { + switch (port) { + case 0: + return 0; + case 4: + return 1; + case 8: + return 2; + case 12: + return 3; + case 16: + return 4; + case 20: + return 5; + case 24: + return 6; + case 25: + return 7; + case 26: + return 8; + case 27: + return 9; + } + } + + /* 2g5 port */ + return port; +} + +static int lan969x_port_mux_set(struct sparx5 *sparx5, struct sparx5_port *port, + struct sparx5_port_config *conf) +{ + u32 portno = port->portno; + u32 inst; + + if (port->conf.portmode == conf->portmode) + return 0; /* Nothing to do */ + + switch (conf->portmode) { + case PHY_INTERFACE_MODE_QSGMII: /* QSGMII: 4x2G5 devices. Mode Q' */ + inst = (portno - portno % 4) / 4; + spx5_rmw(BIT(inst), BIT(inst), sparx5, PORT_CONF_QSGMII_ENA); + break; + default: + break; + } + return 0; +} + +static irqreturn_t lan969x_ptp_irq_handler(int irq, void *args) +{ + int budget = SPARX5_MAX_PTP_ID; + struct sparx5 *sparx5 = args; + + while (budget--) { + struct sk_buff *skb, *skb_tmp, *skb_match = NULL; + struct skb_shared_hwtstamps shhwtstamps; + struct sparx5_port *port; + struct timespec64 ts; + unsigned long flags; + u32 val, id, txport; + u32 delay; + + val = spx5_rd(sparx5, PTP_TWOSTEP_CTRL); + + /* Check if a timestamp can be retrieved */ + if (!(val & PTP_TWOSTEP_CTRL_PTP_VLD)) + break; + + WARN_ON(val & PTP_TWOSTEP_CTRL_PTP_OVFL); + + if (!(val & PTP_TWOSTEP_CTRL_STAMP_TX)) + continue; + + /* Retrieve the ts Tx port */ + txport = PTP_TWOSTEP_CTRL_STAMP_PORT_GET(val); + + /* Retrieve its associated skb */ + port = sparx5->ports[txport]; + + /* Retrieve the delay */ + delay = spx5_rd(sparx5, PTP_TWOSTEP_STAMP_NSEC); + delay = PTP_TWOSTEP_STAMP_NSEC_NS_GET(delay); + + /* Get next timestamp from fifo, which needs to be the + * rx timestamp which represents the id of the frame + */ + spx5_rmw(PTP_TWOSTEP_CTRL_PTP_NXT_SET(1), + PTP_TWOSTEP_CTRL_PTP_NXT, + sparx5, PTP_TWOSTEP_CTRL); + + val = spx5_rd(sparx5, PTP_TWOSTEP_CTRL); + + /* Check if a timestamp can be retrieved */ + if (!(val & PTP_TWOSTEP_CTRL_PTP_VLD)) + break; + + /* Read RX timestamping to get the ID */ + id = spx5_rd(sparx5, PTP_TWOSTEP_STAMP_NSEC); + id <<= 8; + id |= spx5_rd(sparx5, PTP_TWOSTEP_STAMP_SUBNS); + + spin_lock_irqsave(&port->tx_skbs.lock, flags); + skb_queue_walk_safe(&port->tx_skbs, skb, skb_tmp) { + if (SPARX5_SKB_CB(skb)->ts_id != id) + continue; + + __skb_unlink(skb, &port->tx_skbs); + skb_match = skb; + break; + } + spin_unlock_irqrestore(&port->tx_skbs.lock, flags); + + /* Next ts */ + spx5_rmw(PTP_TWOSTEP_CTRL_PTP_NXT_SET(1), + PTP_TWOSTEP_CTRL_PTP_NXT, + sparx5, PTP_TWOSTEP_CTRL); + + if (WARN_ON(!skb_match)) + continue; + + spin_lock(&sparx5->ptp_ts_id_lock); + sparx5->ptp_skbs--; + spin_unlock(&sparx5->ptp_ts_id_lock); + + /* Get the h/w timestamp */ + sparx5_get_hwtimestamp(sparx5, &ts, delay); + + /* Set the timestamp in the skb */ + shhwtstamps.hwtstamp = ktime_set(ts.tv_sec, ts.tv_nsec); + skb_tstamp_tx(skb_match, &shhwtstamps); + + dev_kfree_skb_any(skb_match); + } + + return IRQ_HANDLED; +} + +static const struct sparx5_regs lan969x_regs = { + .tsize = lan969x_tsize, + .gaddr = lan969x_gaddr, + .gcnt = lan969x_gcnt, + .gsize = lan969x_gsize, + .raddr = lan969x_raddr, + .rcnt = lan969x_rcnt, + .fpos = lan969x_fpos, + .fsize = lan969x_fsize, +}; + +static const struct sparx5_consts lan969x_consts = { + .n_ports = 30, + .n_ports_all = 35, + .n_hsch_l1_elems = 32, + .n_hsch_queues = 4, + .n_lb_groups = 5, + .n_pgids = 1054, /* (1024 + n_ports) */ + .n_sio_clks = 1, + .n_own_upsids = 1, + .n_auto_cals = 4, + .n_filters = 256, + .n_gates = 256, + .n_sdlbs = 496, + .n_dsm_cal_taxis = 5, + .buf_size = 1572864, + .qres_max_prio_idx = 315, + .qres_max_colour_idx = 323, + .tod_pin = 4, + .vcaps = lan969x_vcaps, + .vcap_stats = &lan969x_vcap_stats, + .vcaps_cfg = lan969x_vcap_inst_cfg, +}; + +static const struct sparx5_ops lan969x_ops = { + .is_port_2g5 = &lan969x_port_is_2g5, + .is_port_5g = &lan969x_port_is_5g, + .is_port_10g = &lan969x_port_is_10g, + .is_port_25g = &lan969x_port_is_25g, + .get_port_dev_index = &lan969x_port_dev_mapping, + .get_port_dev_bit = &lan969x_get_dev_mode_bit, + .get_hsch_max_group_rate = &lan969x_get_hsch_max_group_rate, + .get_sdlb_group = &lan969x_get_sdlb_group, + .set_port_mux = &lan969x_port_mux_set, + .ptp_irq_handler = &lan969x_ptp_irq_handler, + .dsm_calendar_calc = &lan969x_dsm_calendar_calc, +}; + +const struct sparx5_match_data lan969x_desc = { + .iomap = lan969x_main_iomap, + .iomap_size = ARRAY_SIZE(lan969x_main_iomap), + .ioranges = 2, + .regs = &lan969x_regs, + .consts = &lan969x_consts, + .ops = &lan969x_ops, +}; |