| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2018 MediaTek Inc. |
| */ |
| |
| #include "mt753x.h" |
| #include "mt753x_regs.h" |
| |
| struct mt753x_mapping mt753x_def_mapping[] = { |
| { |
| .name = "llllw", |
| .pvids = { 1, 1, 1, 1, 2, 2, 1 }, |
| .members = { 0, 0x4f, 0x30 }, |
| .etags = { 0, 0, 0 }, |
| .vids = { 0, 1, 2 }, |
| }, { |
| .name = "wllll", |
| .pvids = { 2, 1, 1, 1, 1, 2, 1 }, |
| .members = { 0, 0x5e, 0x21 }, |
| .etags = { 0, 0, 0 }, |
| .vids = { 0, 1, 2 }, |
| }, { |
| .name = "lwlll", |
| .pvids = { 1, 2, 1, 1, 1, 2, 1 }, |
| .members = { 0, 0x5d, 0x22 }, |
| .etags = { 0, 0, 0 }, |
| .vids = { 0, 1, 2 }, |
| }, |
| }; |
| |
| void mt753x_vlan_ctrl(struct gsw_mt753x *gsw, u32 cmd, u32 val) |
| { |
| int i; |
| |
| mt753x_reg_write(gsw, VTCR, |
| VTCR_BUSY | ((cmd << VTCR_FUNC_S) & VTCR_FUNC_M) | |
| (val & VTCR_VID_M)); |
| |
| for (i = 0; i < 300; i++) { |
| u32 val = mt753x_reg_read(gsw, VTCR); |
| |
| if ((val & VTCR_BUSY) == 0) |
| break; |
| |
| usleep_range(1000, 1100); |
| } |
| |
| if (i == 300) |
| dev_info(gsw->dev, "vtcr timeout\n"); |
| } |
| |
| static void mt753x_write_vlan_entry(struct gsw_mt753x *gsw, int vlan, u16 vid, |
| u8 ports, u8 etags) |
| { |
| int port; |
| u32 val; |
| |
| /* vlan port membership */ |
| if (ports) |
| mt753x_reg_write(gsw, VAWD1, |
| IVL_MAC | VTAG_EN | VENTRY_VALID | |
| ((ports << PORT_MEM_S) & PORT_MEM_M)); |
| else |
| mt753x_reg_write(gsw, VAWD1, 0); |
| |
| /* egress mode */ |
| val = 0; |
| for (port = 0; port < MT753X_NUM_PORTS; port++) { |
| if (etags & BIT(port)) |
| val |= ETAG_CTRL_TAG << PORT_ETAG_S(port); |
| else |
| val |= ETAG_CTRL_UNTAG << PORT_ETAG_S(port); |
| } |
| mt753x_reg_write(gsw, VAWD2, val); |
| |
| /* write to vlan table */ |
| mt753x_vlan_ctrl(gsw, VTCR_WRITE_VLAN_ENTRY, vid); |
| } |
| |
| void mt753x_apply_vlan_config(struct gsw_mt753x *gsw) |
| { |
| int i, j; |
| u8 tag_ports; |
| u8 untag_ports; |
| |
| /* set all ports as security mode */ |
| for (i = 0; i < MT753X_NUM_PORTS; i++) |
| mt753x_reg_write(gsw, PCR(i), |
| PORT_MATRIX_M | SECURITY_MODE); |
| |
| /* check if a port is used in tag/untag vlan egress mode */ |
| tag_ports = 0; |
| untag_ports = 0; |
| |
| for (i = 0; i < MT753X_NUM_VLANS; i++) { |
| u8 member = gsw->vlan_entries[i].member; |
| u8 etags = gsw->vlan_entries[i].etags; |
| |
| if (!member) |
| continue; |
| |
| for (j = 0; j < MT753X_NUM_PORTS; j++) { |
| if (!(member & BIT(j))) |
| continue; |
| |
| if (etags & BIT(j)) |
| tag_ports |= 1u << j; |
| else |
| untag_ports |= 1u << j; |
| } |
| } |
| |
| /* set all untag-only ports as transparent and the rest as user port */ |
| for (i = 0; i < MT753X_NUM_PORTS; i++) { |
| u32 pvc_mode = 0x8100 << STAG_VPID_S; |
| |
| if (untag_ports & BIT(i) && !(tag_ports & BIT(i))) |
| pvc_mode = (0x8100 << STAG_VPID_S) | |
| (VA_TRANSPARENT_PORT << VLAN_ATTR_S); |
| |
| if ((gsw->port5_cfg.stag_on && i == 5) || |
| (gsw->port6_cfg.stag_on && i == 6)) |
| pvc_mode = (0x8100 << STAG_VPID_S) | PVC_PORT_STAG; |
| |
| mt753x_reg_write(gsw, PVC(i), pvc_mode); |
| } |
| |
| /* first clear the switch vlan table */ |
| for (i = 0; i < MT753X_NUM_VLANS; i++) |
| mt753x_write_vlan_entry(gsw, i, i, 0, 0); |
| |
| /* now program only vlans with members to avoid |
| * clobbering remapped entries in later iterations |
| */ |
| for (i = 0; i < MT753X_NUM_VLANS; i++) { |
| u16 vid = gsw->vlan_entries[i].vid; |
| u8 member = gsw->vlan_entries[i].member; |
| u8 etags = gsw->vlan_entries[i].etags; |
| |
| if (member) |
| mt753x_write_vlan_entry(gsw, i, vid, member, etags); |
| } |
| |
| /* Port Default PVID */ |
| for (i = 0; i < MT753X_NUM_PORTS; i++) { |
| int vlan = gsw->port_entries[i].pvid; |
| u16 pvid = 0; |
| u32 val; |
| |
| if (vlan < MT753X_NUM_VLANS && gsw->vlan_entries[vlan].member) |
| pvid = gsw->vlan_entries[vlan].vid; |
| |
| val = mt753x_reg_read(gsw, PPBV1(i)); |
| val &= ~GRP_PORT_VID_M; |
| val |= pvid; |
| mt753x_reg_write(gsw, PPBV1(i), val); |
| } |
| } |
| |
| struct mt753x_mapping *mt753x_find_mapping(struct device_node *np) |
| { |
| const char *map; |
| int i; |
| |
| if (of_property_read_string(np, "mediatek,portmap", &map)) |
| return NULL; |
| |
| for (i = 0; i < ARRAY_SIZE(mt753x_def_mapping); i++) |
| if (!strcmp(map, mt753x_def_mapping[i].name)) |
| return &mt753x_def_mapping[i]; |
| |
| return NULL; |
| } |
| |
| void mt753x_apply_mapping(struct gsw_mt753x *gsw, struct mt753x_mapping *map) |
| { |
| int i = 0; |
| |
| for (i = 0; i < MT753X_NUM_PORTS; i++) |
| gsw->port_entries[i].pvid = map->pvids[i]; |
| |
| for (i = 0; i < MT753X_NUM_VLANS; i++) { |
| gsw->vlan_entries[i].member = map->members[i]; |
| gsw->vlan_entries[i].etags = map->etags[i]; |
| gsw->vlan_entries[i].vid = map->vids[i]; |
| } |
| } |