developer | fd40db2 | 2021-04-29 10:08:25 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Copyright (c) 2018 MediaTek Inc. |
| 4 | */ |
| 5 | |
| 6 | #include "mt753x.h" |
| 7 | #include "mt753x_regs.h" |
| 8 | |
| 9 | struct mt753x_mapping mt753x_def_mapping[] = { |
| 10 | { |
| 11 | .name = "llllw", |
| 12 | .pvids = { 1, 1, 1, 1, 2, 2, 1 }, |
| 13 | .members = { 0, 0x4f, 0x30 }, |
| 14 | .etags = { 0, 0, 0 }, |
| 15 | .vids = { 0, 1, 2 }, |
| 16 | }, { |
| 17 | .name = "wllll", |
| 18 | .pvids = { 2, 1, 1, 1, 1, 2, 1 }, |
| 19 | .members = { 0, 0x5e, 0x21 }, |
| 20 | .etags = { 0, 0, 0 }, |
| 21 | .vids = { 0, 1, 2 }, |
| 22 | }, { |
| 23 | .name = "lwlll", |
| 24 | .pvids = { 1, 2, 1, 1, 1, 2, 1 }, |
| 25 | .members = { 0, 0x5d, 0x22 }, |
| 26 | .etags = { 0, 0, 0 }, |
| 27 | .vids = { 0, 1, 2 }, |
| 28 | }, |
| 29 | }; |
| 30 | |
| 31 | void mt753x_vlan_ctrl(struct gsw_mt753x *gsw, u32 cmd, u32 val) |
| 32 | { |
| 33 | int i; |
| 34 | |
| 35 | mt753x_reg_write(gsw, VTCR, |
| 36 | VTCR_BUSY | ((cmd << VTCR_FUNC_S) & VTCR_FUNC_M) | |
| 37 | (val & VTCR_VID_M)); |
| 38 | |
| 39 | for (i = 0; i < 300; i++) { |
| 40 | u32 val = mt753x_reg_read(gsw, VTCR); |
| 41 | |
| 42 | if ((val & VTCR_BUSY) == 0) |
| 43 | break; |
| 44 | |
| 45 | usleep_range(1000, 1100); |
| 46 | } |
| 47 | |
| 48 | if (i == 300) |
| 49 | dev_info(gsw->dev, "vtcr timeout\n"); |
| 50 | } |
| 51 | |
| 52 | static void mt753x_write_vlan_entry(struct gsw_mt753x *gsw, int vlan, u16 vid, |
| 53 | u8 ports, u8 etags) |
| 54 | { |
| 55 | int port; |
| 56 | u32 val; |
| 57 | |
| 58 | /* vlan port membership */ |
| 59 | if (ports) |
| 60 | mt753x_reg_write(gsw, VAWD1, |
| 61 | IVL_MAC | VTAG_EN | VENTRY_VALID | |
| 62 | ((ports << PORT_MEM_S) & PORT_MEM_M)); |
| 63 | else |
| 64 | mt753x_reg_write(gsw, VAWD1, 0); |
| 65 | |
| 66 | /* egress mode */ |
| 67 | val = 0; |
| 68 | for (port = 0; port < MT753X_NUM_PORTS; port++) { |
| 69 | if (etags & BIT(port)) |
| 70 | val |= ETAG_CTRL_TAG << PORT_ETAG_S(port); |
| 71 | else |
| 72 | val |= ETAG_CTRL_UNTAG << PORT_ETAG_S(port); |
| 73 | } |
| 74 | mt753x_reg_write(gsw, VAWD2, val); |
| 75 | |
| 76 | /* write to vlan table */ |
| 77 | mt753x_vlan_ctrl(gsw, VTCR_WRITE_VLAN_ENTRY, vid); |
| 78 | } |
| 79 | |
| 80 | void mt753x_apply_vlan_config(struct gsw_mt753x *gsw) |
| 81 | { |
| 82 | int i, j; |
| 83 | u8 tag_ports; |
| 84 | u8 untag_ports; |
| 85 | |
| 86 | /* set all ports as security mode */ |
| 87 | for (i = 0; i < MT753X_NUM_PORTS; i++) |
| 88 | mt753x_reg_write(gsw, PCR(i), |
| 89 | PORT_MATRIX_M | SECURITY_MODE); |
| 90 | |
| 91 | /* check if a port is used in tag/untag vlan egress mode */ |
| 92 | tag_ports = 0; |
| 93 | untag_ports = 0; |
| 94 | |
| 95 | for (i = 0; i < MT753X_NUM_VLANS; i++) { |
| 96 | u8 member = gsw->vlan_entries[i].member; |
| 97 | u8 etags = gsw->vlan_entries[i].etags; |
| 98 | |
| 99 | if (!member) |
| 100 | continue; |
| 101 | |
| 102 | for (j = 0; j < MT753X_NUM_PORTS; j++) { |
| 103 | if (!(member & BIT(j))) |
| 104 | continue; |
| 105 | |
| 106 | if (etags & BIT(j)) |
| 107 | tag_ports |= 1u << j; |
| 108 | else |
| 109 | untag_ports |= 1u << j; |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | /* set all untag-only ports as transparent and the rest as user port */ |
| 114 | for (i = 0; i < MT753X_NUM_PORTS; i++) { |
| 115 | u32 pvc_mode = 0x8100 << STAG_VPID_S; |
| 116 | |
| 117 | if (untag_ports & BIT(i) && !(tag_ports & BIT(i))) |
| 118 | pvc_mode = (0x8100 << STAG_VPID_S) | |
| 119 | (VA_TRANSPARENT_PORT << VLAN_ATTR_S); |
| 120 | |
| 121 | if ((gsw->port5_cfg.stag_on && i == 5) || |
| 122 | (gsw->port6_cfg.stag_on && i == 6)) |
| 123 | pvc_mode = (0x8100 << STAG_VPID_S) | PVC_PORT_STAG; |
| 124 | |
| 125 | mt753x_reg_write(gsw, PVC(i), pvc_mode); |
| 126 | } |
| 127 | |
| 128 | /* first clear the switch vlan table */ |
| 129 | for (i = 0; i < MT753X_NUM_VLANS; i++) |
| 130 | mt753x_write_vlan_entry(gsw, i, i, 0, 0); |
| 131 | |
| 132 | /* now program only vlans with members to avoid |
| 133 | * clobbering remapped entries in later iterations |
| 134 | */ |
| 135 | for (i = 0; i < MT753X_NUM_VLANS; i++) { |
| 136 | u16 vid = gsw->vlan_entries[i].vid; |
| 137 | u8 member = gsw->vlan_entries[i].member; |
| 138 | u8 etags = gsw->vlan_entries[i].etags; |
| 139 | |
| 140 | if (member) |
| 141 | mt753x_write_vlan_entry(gsw, i, vid, member, etags); |
| 142 | } |
| 143 | |
| 144 | /* Port Default PVID */ |
| 145 | for (i = 0; i < MT753X_NUM_PORTS; i++) { |
| 146 | int vlan = gsw->port_entries[i].pvid; |
| 147 | u16 pvid = 0; |
| 148 | u32 val; |
| 149 | |
| 150 | if (vlan < MT753X_NUM_VLANS && gsw->vlan_entries[vlan].member) |
| 151 | pvid = gsw->vlan_entries[vlan].vid; |
| 152 | |
| 153 | val = mt753x_reg_read(gsw, PPBV1(i)); |
| 154 | val &= ~GRP_PORT_VID_M; |
| 155 | val |= pvid; |
| 156 | mt753x_reg_write(gsw, PPBV1(i), val); |
| 157 | } |
| 158 | } |
| 159 | |
| 160 | struct mt753x_mapping *mt753x_find_mapping(struct device_node *np) |
| 161 | { |
| 162 | const char *map; |
| 163 | int i; |
| 164 | |
| 165 | if (of_property_read_string(np, "mediatek,portmap", &map)) |
| 166 | return NULL; |
| 167 | |
| 168 | for (i = 0; i < ARRAY_SIZE(mt753x_def_mapping); i++) |
| 169 | if (!strcmp(map, mt753x_def_mapping[i].name)) |
| 170 | return &mt753x_def_mapping[i]; |
| 171 | |
| 172 | return NULL; |
| 173 | } |
| 174 | |
| 175 | void mt753x_apply_mapping(struct gsw_mt753x *gsw, struct mt753x_mapping *map) |
| 176 | { |
| 177 | int i = 0; |
| 178 | |
| 179 | for (i = 0; i < MT753X_NUM_PORTS; i++) |
| 180 | gsw->port_entries[i].pvid = map->pvids[i]; |
| 181 | |
| 182 | for (i = 0; i < MT753X_NUM_VLANS; i++) { |
| 183 | gsw->vlan_entries[i].member = map->members[i]; |
| 184 | gsw->vlan_entries[i].etags = map->etags[i]; |
| 185 | gsw->vlan_entries[i].vid = map->vids[i]; |
| 186 | } |
| 187 | } |